MXPA06009441A - Truck fork attachment including adjustable mast for ground clearance. - Google Patents

Abstract

A fork lift for a truck may have at least one mounting beam for pivotally supporting a fork lift mast on a truck frame. The fork lift may extend well below a level of the truck bed to enable engagement of palletized loads resting on the ground by the forks of the fork lift. The mast and fork of the fork lift may be adjusted by removably attaching a pivot connection of the mounting beam to the mast at a selected position along the mast. Attachment elements on the mast may be formed by one or more attachment structures or points. The pivot connection may be attached directly to the mast or may be attached via an attachment bracket having a bracket attachment mechanism that may include one or more attachment elements similar to those on the mast for mutual attachment at a desired height.

Description

TRUCK FORK ADJUSTMENT INCLUDING ADJUSTABLE MAST FOR SOIL STRIKE, TOOLS AND UNION METHODS The present application claims the priority of the US patent application. Serial No. 11 / 440,865, filed on May 24, 2006, entitled "A TRUCK FORK ATTACHMENT INCLUDING ADJUSTABLE MAST FOR GROUND CLEARANCE", and the US patent application. Serial No. 11 / 207,137, filed on August 17, 2005, entitled "A FORK LIFT ATTACHMENT TOOLS AND METHODS", by Richard Mizner, whose descriptions are incorporated herein by reference.

TECHNICAL FIELD In general, this invention relates to elevators, pens and other devices for lifting and dragging loads and, more particularly, to a fork lift for a truck and related devices, and to methods of lifting and dragging loads and performing other tasks with Various joining tools.

BACKGROUND OF THE INVENTION In the past, truck lifts included pens or cranes, or tailgate lifts. These pens are usually tall and are not well adapted to place pallets in residential garages. Frequently more than one person is required to be operated safely. In addition, these elevators are manufactured with a limited capacity, usually less than or equal to 1, 350 kilograms. The tendency is to overload the boom and risk of failure, damage to property and possible injury to the operator or others. The users of these elevators are not usually experienced to load, transport and unload very loaded pallets. However, with the advent of Home Depot (a registered trademark of Homer TLC, Inc.), and other do-it-yourself home product and home stores, the temptation for users to try to handle loads with these lifts is very real. When operating said elevator, it can be especially dangerous to maintain control of the oscillating load. Therefore, devices and a method are required for the domestic supply of loads on a scale of approximately 90 kilograms to approximately 1,800 kilograms. It should be noted that currently in the state of Arizona (and perhaps other states) a CDL license is required for loads of 11, 700 kilograms or greater. The additional payment of duties is also required to transport said loads. In other applications, for example in the placement of ceilings of new buildings that have high ceilings or uneven or smooth terrain, an all-terrain telescopic fork lift is used. These all-terrain forklifts are expensive and their maintenance is expensive. Changing the brakes on any forklift usually costs around $ 2,000. In addition, forklifts that are not all-terrain do not have the ability to walk on rough or smooth terrain. Additionally, for other applications and tasks such as excavation, trimming and application of coatings, demolition work and other tasks, a separate machine or device is used. Buying or renting other equipment results in additional equipment costs and the use of each different piece of equipment.

BRIEF DESCRIPTION OF THE INVENTION The present invention relates to truck forklifts and other related devices for lifting and dragging medium-sized loads. Due to the deficiency of past devices and methods, there is the incentive to provide a group of devices and methods that allow the transport and supply of loads on a medium weight scale. As explained above, there is a demand for a supply method to safely and reliably lift and carry medium-sized loads and the devices that allow such a method. The present inventor has found a niche market for using these devices and providing the supply of these medium-sized charges. Accordingly, the present invention includes a forklift that can be mounted on the back of a truck. In an exemplary mode, the forklift has a fork-bearing mast that is pivotally mounted on mounting rails extending from bow to stern on the bed of a delivery truck. Alternatively, the forklift can be applied to a Cabover truck. It is understood that the forklift can be mounted on a truck that has a bed, or can be mounted on a truck that has an otherwise bare frame. The mast can be moved from a vertical position of use to a flat resting position, by actuating hydraulic rams that pivot the mast pivotally towards the bed of the truck. These hydraulic rams can also be used to tilt the mast to an appropriate angular orientation of the forks during use. The mounting rails can be 1.22 meters to 2.44 meters long and can be welded or otherwise fixed to a flat base material lying horizontally on the bed of the truck. On an alternative scale, the mounting beams can be from 2.13 meters to 2.44 meters long. The flat base can be bolted to a cross member of the chassis frame of the truck by means of 1.56 centimeters bolts, which extend from one side of the truck bed to the other and the flat base to the mounting beam, for example. It is understood that the bolts can be of any size and can be limited only by the desired force to support the joists and the forklift in the truck. The forklift can have a mast of 1.83 meters or less, so that when it is supported inside and outside the residential garages or other loading and unloading areas of little clearance, the total height (unloaded) can not reach more than 1.97 meters. In this configuration, the forklift can have only a telescopic inner part or an internal carriage that moves up and down inside an external part in a non-telescopic manner. Furthermore, the present invention can incorporate an elevator from 1.83 meters to 2.44 meters which can reach a height of 6.1-7.6 meters in its extended configuration, by means of additional internal telescopic parts. Said height capacity would be advantageous for roofing applications where the ground may be uneven. For example, the invention with a capacity of 6.1-7.6 meters in height can be used to lift loads of ceramic tile to a roof. It is understood that a telescopic mast of three or four sections can have the advantage of being stiffer than a single mast or a double sectioned mast. In another aspect, it is clear that a truck cradle elevator of the present invention is less expensive both in its manufacture and in its maintenance, but at the same time it can be used in applications having a rough or smooth terrain. That is, a truck forklift that can be provided as an attachment for a truck in accordance with the present invention will be less expensive while providing advantages that conventional forklifts do not have. To guide the truck's fork lift of the present invention, two or more cameras can be installed with a corresponding monitor of two or more channels in the cab of the truck. These cameras can be DC Mobil class. One of the cameras can be placed on the mast or top of the truck, and can be directed to observe an area immediately below the truck. The other camera can be placed on the forks or fork plate to observe the openings in a pallet during the insertion of the forks into the pallet. The forklift may also include a display mechanism having at least one camera supported with and movable with the fork plate. The forklift can also include, or may have associated with it, a monitor in a truck cab. A video cable can operatively connect the camera to the monitor. In configurations that have one or more cameras maintained in a movable portion of the mast, fork plate or forks, the video cable can be advantageously supported, at least in part, by a spring-loaded cable reel that releases the cable when the cable is under tension from one camera end thereof. The cable reel can also automatically retract a portion of the cable to compensate for cable slack when the fork plate and camera move and change the effective cable length required. Alternatively, the cameras can be maintained on the truck or on an external part of the mast so as not to require the spring-loaded cable reel. The forklift can include manual hydraulic actuators that allow the actuation at a speed proportional to the distance in which the actuators move. However, this would require extensive modification within the cabin for operator comfort and ease. Therefore, the present invention typically has electric solenoid valves on hydraulic on and off, which do not allow variable speed operation. With this configuration of electric over hydraulic actuator, the flow in the hydraulic system can be restricted to ensure that the elevator moves at a lower speed. In addition, the common practice of shaking the forklift in and out is still available for fine adjustments in height. In addition, it is also possible with the present invention an electrical control over hydraulic that is able to adjust the speed to be proportional to the distance moved by the actuator. In any case, the electric control over hydraulic allows remote operation of the forklift in such a way that a user can operate the lift from the cab or from outside the truck. This is particularly advantageous due to the need to see and adjust the height of the fork in uneven terrain. In addition, the remote drive allows the precise insertion of the fork because the user can have any advantageous point that he wishes. On the other hand, the pendant for the control can be kept relatively short to keep the user removed from a lifted load for safety reasons. The truck's fork lift of the present invention can be placed on a one ton truck having double wheels and the manufacturer's specification, or modified to a weight capacity on a scale of 1, 530 to 1, 980 kilograms. It is understood that the forklift of the present invention can be mounted on any truck, including those of rear suspension of lower weight capacity. A two-station fork lift with a minimum capacity of 1, 800 kilograms can be incorporated, at least with 90-centimeter forks. In one aspect, the present invention may include an adjustment bracket for adjustably supporting a forklift mast on at least one fixed mounting beam in a vehicle. The adjustment bracket may include at least one adjustment bracket base. The base may have a joining mechanism that includes a plurality of attachment points. The attachment points can be separate joining points, as would be provided by a plurality of bolt holes. Alternatively, the plurality of attachment points can be provided by an extension of the base along which a weld can be applied to join the base to the external part of the mast, for example. The adjustment bracket may also include a pivot connection piece or otherwise define a pivot point for the mast. The pivot connection piece can be supported on the base. Alternatively, the present invention may include an adjustment mechanism that more generally provides adjustable pivot points. The pivot points may be provided by adjustable pivot plates which are independently adjustably supported on the above-described support. further, the adjustable pivot plates can be supported in an adjustable way directly on the external part of the mast. On the other hand, a plurality of pivot points may be placed along the bracket or even the external part of the mast itself. These pivot points may be provided by through holes to receive pivoting pins, for example. In the configuration having a bracket or pivot plate held adjustably on the external part of the mast, the base of the adjustment bracket can be an elongated base. The plurality of separate attachment points can form an elongated pattern that extends along at least a portion of the elongated base. The elongated model may include a repeating pattern of the separated points. The attachment points may include mounting holes. The mounting holes may include a plurality of bolt holes of different size to selectively receive a set of bolts corresponding to a particular predetermined height. The base may have at least one flange extending transversely to a plane of the base for coupling edges of the external part of a fork lift mast. A pair of adjustment brackets may include the details of the adjustment bracket described above. The pair of adjustment brackets, thus, may have respective bases having respective adjustment mechanisms and respective pivot connection pieces, supported on the respective bases. The pivot connection members define respective pivot points, such that when the bases are attached to the mast, the pivot connection parts and the respective pivot points are held in respective specific locations on the mast. In another aspect, the present invention may include a height-adjustable fork lift mast for the adjustable mounting of a truck's fork lift mast on a mounting beam supported on a truck. The height-adjustable fork lift mast may include at least one external part and at least one internal part telescopically supported on at least one external part. The height-adjustable fork lift mast may also include a linking mechanism that includes a plurality of separate attachment points on the outer part (at least one). The plurality of separate attachment points can be arranged at least partially along the external part. A joining element can be formed of a subgroup of the plurality of separate joining points. For example, the joining element may include a particular set or model of mounting holes. The plurality of separate attachment points can include a plurality of different models of mounting holes, which can provide a respective plurality of different joining elements. The plurality of different models of mounting holes may include mounting holes of a first model having different dimensions from the mounting holes of a second model. In this way, mounting bolts of a particular size can be associated with a particular mounting element (or hole model) and an associated height adjustment. This can better ensure proper mounting and adjustment of the forklift on a particular truck configuration. The height adjustable fork lift mast can include a pair of external parts that include the details of the external part described above. The adjustable height fork lift mast can include a pair of internal parts that includes the details of the internal part described above. The joining mechanism may include a pattern of matching of separate attachment points on each of the external parts. That is, the model of separate junction points on each of the external pieces may coincide with another. In another aspect, the present invention may include a forklift for height adjustable mounting on a truck. The forklift can include a pair of adjustment brackets, which adjustably connect pivot connections of respective mounting beams to respective external parts of a forklift mast. The adjustment brackets may have a bracket attachment mechanism. The mounting joists can be adapted to be held in a truck. The forklift can include a mast adjustment mechanism on the external parts of the mast. One of the adjustment mechanisms may have at least one joint element, and the other adjustment mechanism may have a plurality of joint elements. The connecting element (at least one) of the adjusting mechanism can be removably attached to one of the elements of the plurality of the connecting elements of the other of the adjustment mechanisms, for a selective height adjustment of the mast. In this regard, it is understood that the joining elements may include a plurality of separate attachment points. The attachment mechanism may include at least one group of fasteners that connect the respective attachment points of the adjustment bracket to the respective attachment points of the external parts of the mast. A first element of the plurality of joining elements can be centered in a spaced position of a center of a second element of the plurality of joining elements. In this way, the selective joining of the joining element (at least one) of the first and second joining element, can determine a position of height of the mast with respect to the mounting joists. Each joint bracket may include a plurality of models of attachment points. Each external part of the mast may include at least one model of attachment points that coincides with at least one of the models of the junction points on the joint brackets. The plurality of models can be spaced along the adjustment bracket. Alternatively, each joint bracket may include at least one pattern of attachment points. Each external part of the mast may include a plurality of models of attachment points that match the model (at least one) of the attachment points on each joint bracket. The plurality of models can be spaced along the external parts of the mast. It is understood that the height adjustment can be applied to an internal part of the mast, and that an external part or parts can move telescopically with respect to the internal part without departing from the spirit and scope of the present invention. Furthermore, the height adjustment of the present invention can be applied to masts having a single external or internal part that supports or guides a mobile carriage that can not move telescopically with respect to the single piece. That is, the single piece can be pivotally supported on mounting joists on a truck in selectively adjustable positions along the single piece. The single piece can be supported on the mounting joists by supports as described above. Alternatively, the single piece can be held by fasteners and holes, or by other joining elements in the single piece, or it can be attached directly thereto. In another aspect, the invention encompasses a method of adjusting the height of a mast and a fork of a fork lift mounted on a truck. The method may include adjusting the position of a pivot connection of a mast with a mounting beam along the height of the mast. The mounting beam can be a mounting beam adapted to be supported on a truck. The method may also include removably connecting the pivot connection to the mast. The method may also include adjusting a position of a hydraulic ramming connection of a mast along the mast. The adjustment and joining steps can include a preliminary height adjustment to position the mast and the forks of a truck-mounted fork lift above ground level. The method may also include finely adjusting the height of the forks above the. Ground level, adjusting fork lift chain bolts. A special strut can be provided to retain the forklift when it is separated from the truck. This strut can be in the form of a frame having receptacles for the forks, such that a user can selectively insert the forks into the receptacles, loosen bolts or pins that hold the fork lift on the truck, and operate the truck at away from the fork and the strut. In this way, the forklift can be stored separately from the truck when the truck bed is required for other purposes. In addition, the strut may have a height adjustment mechanism to adjust the height of the fork during mounting and removal of the forklift and truck. The invention may include the truck's fork lift (which includes the truck) in combination with a spare wheel or gooseneck trailer. The spare wheel or gooseneck trailer may be a trailer of approximately 4.27 meters which has a capacity greater than or equal to 6,750 kilograms. The mast may be small enough to allow movement in and out of low profile openings, such as residential garages. In most cases, the spare wheel or ball hitch will be located in front of the mounting joists. Alternatively, the spare wheel or ball coupling and support structure on the truck can be modified to accommodate both the forklift and the hitch. Alternatively, the spare wheel or ball coupling can be attached to the channel type frame. In addition, the trailer may have a hydraulic cylinder jack to elevate the trailer hitch portion for easy connection and disconnection of the truck. Additionally, the combination may include a pallet truck that is similar to a motor drive device, but which is self-driven and has a pallet fork connected to the mast thereof. This pallet truck is useful for moving pallets loaded in and out of narrow spaces in which the truck fork is not able to enter or exit. The pallet truck can be stored in the trailer along with two rows of pallets. This combination of devices allows the methods of use described in the detailed description section below. The combination of the devices and the method of use thereof clarifies the invention. Advantageously, the method incorporating the truck forklift can reduce the unloading time by fifteen to twenty minutes per delivery, and the user can operate the forklift from the safety of his truck cab. In a simple form, a truck forklift in accordance with the present invention may include a forklift mast mounted on a bed of a truck, a fork plate slidably mounted on the mast, an elevator driver connected to the mast and to the fork plate to move the fork plate along the mast, and at least one tilt actuator connected to the bed of the truck and to the mast to tilt the mast. The truck's forklift has a deployed position of use in which the mast is generally positioned rearwardly of the bed in a generally vertical orientation, and a stored position in which the mast is placed in overlying relationship with the bed. The mast is pivotally mounted on the bed of the truck. The truck's forklift may also include a fork pivotally supported on the fork plate, such that the mast moves pivotally toward the overlying relationship and the fork moves pivotally separately to rest on the bed in the stored position . The truck forklift can include a first hydraulic pump hydraulically connected to the elevator actuator, and a second hydraulic pump hydraulically connected to the tilt actuator (at least one). It is understood that the pumps are hydraulically connected to the actuators by means of valves. A first and second control switch may be operatively connected to respective first and second hydraulic pumps, to provide electrical control over the hydraulic. The truck's forklift can include a tool case mounted at a front end of the bed, the tool case having channels open therethrough. The channels can receive at least some of the mounting joists that also hold the forklift in the bed of the truck. A first hydraulic pump can be hydraulically connected to the elevator actuator, and a second hydraulic pump can be hydraulically connected to the tilt actuator (at least one) by means of respective valves. The first and second pumps can be maintained in a portion of the toolbox. The truck's fork lift may also include a display mechanism that includes at least one camera or a mirror held on at least one of the truck, the mast, and the fork, so that the operator observes the fork insertion being in a truck cabin. When the display mechanism includes at least one camera, the truck's fork lift also includes at least one mirror operatively connected to the camera (at least one). Thus, the monitor can display images captured by the camera to be observed by the operator while sitting in the cabin and operating the truck to insert the fork. The truck forklift may also include a plurality of cameras. At least one chamber of the plurality of chambers can be mounted on the mast, and at least one other chamber of the plurality of chambers can be mounted on the fork plate or on the fork. The truck forklift can also include a spare wheel or ball hitch connected to a truck chassis, either directly or by means of mounting joists. In another aspect, a pallet truck of the present invention may include a carriage chassis, at least three wheels supported on the chassis, a boom mounted adjustably on the chassis, and an elevator actuator connected to the chassis and the boom. The pallet truck can include a motor supported on the chassis. The motor can be operatively connected to at least one of the wheels and to the elevator actuator to selectively drive the carriage and operate the actuator. The pallet truck chassis can have a space between at least two of the wheels to receive a load in the space for coupling and lifting with the carriage. The pallet truck may also include a fork suspended from the boom to engage and hold a load by lifting and transporting with the pallet truck. At least one of the wheels can be a steering wheel. The pallet truck may also include at least one steering actuator for guiding the steering wheel. The driving wheel can also be the steering wheel. The pallet truck can be a self-driven and hydraulically driven car.

A system for loading and hauling in accordance with the present invention may include a truck, an elevator mounted on a bed of the truck, a trailer attachable to the truck, and a pallet truck. The system may also include ramps supported on a lower side of the trailer to load the pallet truck onto the trailer. The lift can include a pivotally mounted boom and adjustably on the bed. The lift can be a forklift that includes a forklift mast pivotally mounted on the bed. The trailer can be a spare wheel trailer or gooseneck, for example. The system may also include a spare wheel or ball hitch mounted on the bed of the truck to selectively attach the trailer to the truck. The trailer may also include at least one trailer lift mounted at a front end of the trailer to unlatch a loaded trailer. In one aspect, the mast can be an extendable mast for greater height capacity. By way of example and not limitation, the mast may be extendable to heights of approximately 6.1 meters or greater. Thus, the system can also include at least one support in a corner of the truck. The support can be in the form of an adjustable elevator that can be operated to hold the truck in a particular position, and reduce the movement of the truck during the operation of the extendable forklift. In addition, a plurality of supports can be provided to reduce the movement of the truck during the use of the extendable forklift.

In another aspect, the invention includes a method for loading and dragging loads. This method can include holding a hydraulic lift on a bed of a truck, lifting a load with the lift, and placing the load on one of the bed of the truck or on a trailer. The load in general can be in the scale of approximately 90 kilograms up to the maximum allowed by the State and the local Laws. On the other hand, the individual pallets will most likely not exceed 3,150 kilograms of weight. The step of placing may include placing the load on the trailer. The step of lifting can include lifting the load with a fork slidably supported on a mast. The holding step may include pivotally holding the mast on the bed of the truck. In this aspect, the method may include unhooking the trailer from the truck by at least one electrically driven hydraulic trailer lift. In fact, the method can include unhooking the trailer in a condition loaded at a delivery point by at least one electrically driven hydraulic trailer lift. Advantageously, the method may include removing the load from the trailer by means of the hydraulic lift on the bed of the truck. The method can also include a preliminary step of lifting a load with a self-propelled pallet truck. This step would include moving the load to a location that is more accessible to the hydraulic lift. In the case that the hydraulic lift is a forklift, the method may include inserting the load operating the truck from inside a truck cab. In this case, the method includes capturing images of a relationship between a fork and the load, and displaying the images on a screen in the cabin. The method can also include observing the images on the screen and controlling at least one of the truck and the elevator from inside the cabin, based on the images on the screen. In another aspect, the invention includes a strut for supporting the mast and fork of a forklift in a separate condition of a truck. The strut may include an elongate base, a vertical support supported on the elongated base, and at least one fork receiver extending longitudinally in at least partially overlapping relationship with the elongate base. The fork receiver can have an opening that is on the scale of about 5 centimeters to about 15 centimeters in a vertical direction. The elongated base may include a plurality of stringers having lengths on a scale from about 1.22 meters to about 3.66 meters. The fork receiver can include a plurality of tubular members to receive each fork from a plurality of fork lift forks, to hold the forks and the mast separately from the truck. In another aspect, the invention may include a method for selectively using a tool from a variety of joining tools. The method may comprise the steps of selecting a joining tool according to the operation to be performed or the task that is required, and joining the joining tool to a carriage of a forklift. The method may also include the preliminary step of attaching the forklift to a delivery truck, the method also including joining a propulsion mechanism held in the delivery truck to the joining tool. The method also includes actuating the joining tool with a hydraulic pump or a power source maintained in the truck. The method may also include driving a hydraulic motor in the joining tool or driving at least one hydraulic ram in the joining tool. The method may also include locking the carriage against inadvertent movement with respect to a forklift mast. The step of locking the carriage may include connecting a tension element to each of the carriage and the mast, raising the carriage after connecting a tension element to the carriage and the mast, or securing at least one bolt coupled at least with a detent to a portion of the carriage frame to prevent movement of the carriage, preventing the movement of at least one roller of the carriage. The retainer (at least one) can be of a size and shape complementary to the size and shape of the roller (at least one). When it is not desired to use the forks of the forklift, the method may include the preliminary steps of rotating the forks of the forklift from a position of use to a stored position, and inserting the tips of the forks into cavities maintained in a truck. of distribution.

In another aspect, the invention may include a system for supporting a variety of attachments on a forklift carriage. The system may include a top link on the carriage, a lower link on the carriage, a lock lever on the carriage for locking engagement of any of a variety of predetermined attachment tools. The system can also include the forklift mounted on a delivery truck. The system may also include a sustained drive mechanism in the delivery truck to drive the joining tool. The drive mechanism may include a hydraulic pump or a source of electrical power. The joining tools can include a hydraulic motor or a hydraulic ram. The system may also include at least one cavity held in the truck to receive the tip of a fork when the fork is rotated from a use position to a stored position during the application of one of the joining tools. In yet another aspect, the invention may include a fork lift truck that includes sliding or rolling mast coupling elements on a carriage frame. The mast coupling elements can be adapted for movement along a mast of a forklift. A top element can be attached to the frame and can have a top surface. A lower element can be attached to the frame and can have an inner surface with an opening extending through an opening externally through the lower surface. A bolt can be moved movably inside the carriage. The bolt can be extendable externally through the opening, and a lever can be operatively connected with the bolt. The lever may place the bolt in a retracted pin position within the carriage in a first lever position, and may place the bolt in a prolonged position extending outwardly through the opening in a second lever position. In addition, another aspect of the invention may include a forklift carriage attachment assembly for receiving a variety of accessories when attached to a forklift truck. The truck link assembly may include a top member adapted for connection to a forklift truck upper member. The upper element may have a top surface. A lower element can be adapted for connection to the lower forklift carriage member. The lower element may have a lower surface with an opening extending from one side to the other and opening externally through the lower surface. A bolt can be movably disposed within the joint assembly in an assembled state. The bolt can be extendable externally through the opening, and a lever can be operatively connected to the bolt. The lever may place the bolt in a retracted bolt position within the carriage in a first lever position, and may place the bolt in an extended position extending outwardly through the opening in a second lever position, when the assembly of union is in a second lever position. The forklift carriage attachment assembly may also include a joint tool holder that forms an integral component that includes the top element and the bottom element. The foregoing characteristics and advantages and others of the present invention will be apparent from the following detailed description of the particular embodiments of the invention, illustrated in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A is a perspective and schematic view of a truck fork lift mounted on a truck according to an embodiment of the present invention; Figure 1B is a schematic perspective view of the truck fork lift of Figure 1 A separated from the truck; Figure 1C is a schematic perspective view of a portion of the truck fork lifter of Figure 1B, with the forks in a lowered position and showing additional details; Fig. 1 D is a perspective view of a pair of adjustment brackets for mounting a truck fork lift truck mast with adjustable height on a truck, according to one embodiment of the present invention; Figure 1 E is a schematic perspective view of one of the adjustment brackets of Figure 1 D, showing the mounting possibilities for adjusting the height of a truck mounted fork lift; Figure 1 F is a schematic end view of the adjustment bracket supported on the mast of Figure 1 E; Figure 2A is a schematic perspective view of a tool case configured in accordance with the embodiment of Figure 1 of the present invention, which can advantageously assist in supporting the forklift in the truck; Figure 2B is a schematic top plan view of the tool box and joists of Figure 2A, with the tool case in an open empty condition; Figure 2C is a detailed schematic top plan view of portion 2C of Figure 2B, with the toolbox in a condition of use containing the components of the present invention; Figure 2D is a schematic top plan view of a control box according to an embodiment of the present invention; Figure 2E is a schematic top plan view of a control box and a transceiver according to another embodiment of the present invention; Figure 3A is a schematic perspective view of a trailer according to the present invention; Figure 3B is a schematic side view of the truck fork lifter of Figure 1A and a portion of a trailer according to Figure 3A; Figure 3C is a schematic front plan view of the trailer of Figure 3B; Figure 3D is a schematic rear plan view of the truck fork lift of Figure 3B; Figure 4A is a more detailed schematic perspective view of a pallet truck according to that shown in Figure 3A; Figure 4B is a top plan view of the vane cart of Figure 4A; Figure 4C is a front plan view of the vane cart of Figure 4B, taken in the direction of the arrow 4C; Figure 5A is a schematic side view of a fork lift strut for supporting the fork lift of the present invention in a condition separate from the truck; Figure 5B is a schematic top plan view of the fork lift strut of Figure 5A; Figure 6A is a front plan view of a fork lift with a carriage in a locked position; Figure 6B is a sectional view of a fork lift, taken along the line 6B-6B, which also shows the carriage held in the locked position by a tension element; Figure 6C is a sectional view of a truck lift, taken along the line 6C-6C, with a fork locked in the carriage; Figure 6D is a sectional view of a carriage, taken along line 6D-6D of Figure 6A, with the carriage in a locked position using a retainer to resist movement of a carriage roll; Figure 6E is a partially cutaway side schematic view of a carriage joint assembly coupled with a carriage; Figure 6F is a partially cutaway side schematic view of a carriage joint assembly engaged with the forks of a fork lift; Figure 6G is a partially cutaway side schematic view of a carriage joint assembly coupled with a carriage and a joining tool; Figure 6H is a schematic side view of a fork lift with rotating forks in a truck; and Figure 7 is a side schematic view of a plurality of joining tools that can be used with a carriage joining assembly in accordance with the present invention.

DETAILED DESCRIPTION OF THE MODALITIES OF THE INVENTION As set forth above, the embodiments of the present invention relate to truck forklifts and other related devices for loading and hauling medium-sized loads.

As shown in Figure 1A, a truck and forklift combination 12 facilitates easier, faster and safer loading and transport of medium-sized loads. Medium-sized fillers for the purposes of the present invention can be defined as fillers having a weight on the scale of about 90 kilograms to about 1, 350 kilograms. The fork lifter, 15, can be a forklift that has a capacity in the range of 450 to 3,150 kilograms. The fork lifter 15 can also be an extendable fork lift as indicated by the dashed line and the dashed extension at 17 in Figure 1A. Similarly, the delivery truck 18 can be a truck that has a manufacturer's rating of 1, 530 to 3,150 kilograms. Alternatively, the delivery truck can be modified to include a suspension with a classification of 2,250 kilograms or a classification of 3,150 kilograms, for example. Larger trucks and forklifts that have higher capacity ratings can also be used in accordance with the present invention. However, loads weighing in the range of about 90 kilograms to about 3,150 kilograms may be lifted with the elevators of the present invention. As shown, the truck's fork lift may include a mast, 21, and forks, 24. The mast 21 is pivotally supported on the truck bed, 27, by a pair of channel beams extending from bow to stern , 30 and 33. These joists 30, 33 are mounted on the truck chassis or chassis (not shown) by means of bolts or other mounting structure that passes through the bed of the truck. Alternatively, the joists 30, 33 can be part of the chassis. This is done by modifying the truck frame to include the joists 30, 33, or the joists 30, 33 can be incorporated as part of the chassis during the original manufacture of the vehicle. A pivot connection 36 at the rear ends of the bed 27 and the joists 30, 33, allows the mast 21 to rotate from the vertical position of use shown in Figure 1A, to a stowed and transport position that is more or less flat on the bed 27. One or more hydraulic rams, 45, can be connected to the joists 30 and 33 and to the mast 21, to selectively move the forklift 15 from a vertically oriented position of use to a stored transport position, with the mast lying generally flat or in an overlying relationship in bed 27 of the truck. Alternatively other arrangements can be made to raise and lower the mast 21 with respect to the joists 30, 33 and the bed 27 of the truck. One such arrangement includes the hydraulic ram 45 connected to a link extending between each of the masts 21 and connected thereto, and the joists 30, 33. In this linkage version, the linkage beams can be moved from a double condition to a relatively straight condition as the forklift mast 21 moves from a stored position to a vertical position of use. In any case, one or more tilt rams 45 may be incorporated, and hydraulic rams 45 may also provide tilt adjustment of the mast 21 during use, for example to position the forks to tilt a load toward the mast during transport. The tilt rams 45 can be mounted on a block or mounting plate 52 connected with the joists 30, 33, or with the truck frame, generally at the level of the truck bed 27 or below it, as shown in FIG. Figure 1B. In addition, the pivot connection 36 of the mast may be close to the level of the bed 27, such that the mast can be pulled and propelled in and out of an overlying relationship with respect to the truck bed 27 and the joists 30, 33. Alternatively, one or more hydraulic rams 45 can be placed under the bed 27 of the truck and connected to a lower end 53 of the mast 21. Although this configuration has the advantage of allowing a lower profile stored position of the mast 21 in the truck bed 27, the location of the hydraulic rams 45 under the bed 27 and its connection to the truck frame can occupy a space that would be otherwise used for storage of a spare tire. In an exemplary embodiment, a truck suspension 18 may have six main springs and five overload springs on each of the rear wheels. The springs can be adjusted in such a way that the lowermost overload spring is on a scale of approximately 1.25 centimeters to a.87 centimeters above the lowermost main spring. In this configuration, the truck will only tilt slightly before attaching the overload springs. For example, the truck 18 having this spring configuration and having the truck's fork lifter 15 and the associated components on the truck 18 without additional load, can be tilted just enough to engage or almost dock the overload springs. This can be important to ensure that the truck maintains an appropriate clearance for a lower end 53 of the forklift mast. As can be seen from Figure 1A, the lower end 53 of the mast can have a clearance of about 30 to 35 centimeters in an unloaded state. When fully loaded, the truck's rear suspension will couple the overload springs and can tilt only about 10 centimeters, leaving a minimum of approximately 20 inches of clearance from the ground. This amount of clearance is excellent compared to a regular clearance on the scale of approximately 7.5 to 10 centimeters between a lower end of a mast and the ground of a standard forklift. The standard forklifts are configured so that the forks extend down a maximum of approximately 5 to 10 centimeters from the lower end of the mast. The ability to extend the forks downwardly from the lower end of the mast allows the forks to engage or almost engage in the ground, so that they can slide under low loads, for example when the forks are inserted in a pallet and dock with it With the mast 21 of the present invention, the forks must extend downwards by approximately 37.5 centimeters more than the standard forks, to compensate for the clearance between the lower end 53 of the mast 21 and the ground. With this clearance and these modifications, the truck and the forklift 12 are well adapted for any terrain having medium to large contours. For example, the truck and forklift 12, which has an unloaded load of 35 centimeters for the lower end 53, can support a load of 1, 350 kilograms to 1,710 kilograms at a twenty degree slope in a garage that has a level floor, and maintain a clearance of 22.5 centimeters or more. As shown in Figure 1 B, the forklift 15 can be provided as a separate apparatus that can be retrofitted to an existing truck. Alternatively, the forklift 15 can be provided as an integral part of a truck during manufacture. In any case, all the forklift 15 or a part thereof can be easily removed to allow more space or other uses of the truck bed 27, for example to drag loads that would otherwise not fit in the bed 27. In Figure 1B, the forklift is shown as a separate apparatus that can be removed together with the joists 30, 33. Joists 30 and 33 supporting the truck's fork lifter 15 can be welded or otherwise joined to a flat base material, 60, as shown, with welds at 63. Although the flat base material 60 it is shown as a strip extending laterally near a rear end of the bed 27 and the joists 30, 33 in Figures 1A and 1 B, alternatively the flat base material could cover a larger area of the bed 27. In fact , the flat base material could cover almost a complete area of the bed 27. Alternatively, the flat base material could be provided in sectioned areas such as at 66 or 67, which may correspond to underlying transverse members in a truck frame. In this way, the bolts 69 can be used to join the flat base material 60 with the underlying transverse members of the truck chassis or chassis. Figure 1 B schematically shows a hydraulic drive system, 70, including a control box, 71. The hydraulic drive system includes pumps, solenoids, motors, hydraulic lines and power lines, all connected as will be described below . The control box 17 is shown in a particular configuration in Figure 1 B, which operates substantially in accordance with other embodiments described more particularly below. In any case, the control box 71 has controls to drive the hydraulic pumps and solenoids to move the fork plate up and down, and tilt the mast in and out. A transverse beam member 72 can be provided to join the joists 30 and 33 for greater stability and strength. In addition, a space 75 can be provided between a greater portion of the joists 30 and 33 and the bed 27 of the truck. This space 75 can advantageously allow the joists 30 and 33 to flex under the heavy loads that will be applied during use. It is understood that the flat base material, 60, 66, 67, the cross member 72 and other structural members may alternatively include reinforcing contours to advantageously increase the force to weight ratio of the assembly and reinforce the structure of the fork lift 15 and the truck frame. As shown in Figure 1 C, a pair of frame members 78 can be mounted on each of the mounting beams 30 and 33, and form supports with pivot holes 81 for the pivot connections 36 with the mast 21. These frame members can be adjustable from a position of use shown in Figures 1A, 1C, to a stored position rotated from a horizontal orientation up to ninety degrees or more, for example, such that the tailgate of the truck can close without obstruction In addition, the frame members 78 can be formed integrally with the mast or rigidly joined thereto for insertion or reception on the ends of the mounting joists 30, 33, and attachment thereto by means of a pivot bolt, for example. A fork plate 84 can be slidably supported on the mast 21 in the known manner. The forks 24 can be supported on the fork plate 84. As shown in Figures 1A and 1B, the forks 24 can be pivotally and slidably joined to the fork plate 84 by means of sleeves 87 which couple a rod 90 of the fork plate 84. In this way, when the mast 21 is bent to the stored position lying generally flat on the bed 27 of the truck 18, the forks 24 can be manually rotated, such that the tips 93 rotate and engage with the bed 27 of the truck 18. The tips of the forks 24 can be received in cavities in the rotated stored position, as shown and described in the US patent application. Serial No. 11 / 207,137, filed on August 17, 2005, and entitled "FORK LIFT ATTACHMENT TOOLS AND METHODS", the description of which is incorporated herein by reference. Alternatively, the forks 24 can be formed to include a pivot in a joint between the regularly vertical portion and the regularly horizontal portion. In this way, when the mast 21 or the fork 24 is not used or stored, the regularly horizontal portion of the fork 24 can be bent so that it is on top of the portion regularly vertical or adjacent thereto. Therefore, the mast 21 and the fork 24 can be bent substantially extended in the bed 27 of the truck 18, so that it is not necessary to use a gooseneck trailer adapted with the forklift mounted on the truck. As shown in Figures 1A and 1C, the truck fork lifter 15 may also include a display mechanism with at least one camera 92 or a mirror held in the mast, for example. One or more additional chambers 94, 95, 97 can be mounted on the fork plate 84 or the fork 24. These chambers 92, 94, 95, 97, or mirrors, can be provided to observe the relationship between the forklift of truck 15, the forks 24, and a load during the insertion of the forks 24. A monitor 98 can be placed remotely in the cab of the truck, for example, to be observed by an operator also placed in the cab. The monitor 98 can thus display images captured by the camera 92, 94, 95, 97, to be observed by an operator sitting in the cabin and operating the truck to insert the fork. When mirrors are used, it is understood that a durable stainless steel device can provide a durable but effective mirror. Figure 1 D shows adjustment brackets 37 that allow height adjustment of the mast 21 in the truck. In this way, the pair of adjustment brackets 37 provides a mechanism and method of mast adjustment. One can dispose on one side first and second bracket 38, 39 or another structure between the hydraulic ram 45 and the pivot connection 36, and on the other side the mast 21. The brackets 38, 39 or other structure can have a plurality of Mounting positions defined by a plurality of bracket attachment elements 34, 35. The attachment elements may include mounting holes 40 or other attachment structure to allow mounting of the mast 21 at a variety of heights, such that the associated fork lift 15 can be supported on truck beds 27 that have a variety of corresponding heights. In this way, the present invention can be used more quickly and practically in conjunction with a wide variety of trucks. For example, the truck's forklift of the present invention can be provided as an equipment that includes the height adjustment brackets 38, 39, such that the height of the mast 21 can be selected to achieve an appropriate level above. of the floor for any combination of a variety of brand and truck suspension combinations. The suspension of a truck can have a capacity of at least half a ton, three quarters of a ton, one ton, two tons, etc. With these variations and the other variations incorporated by the components of the various truck brands, it is contemplated that a bed height above ground level may vary from about 80 centimeters to about 115 centimeters (see Figures 3B and 5A). to see a representation of the height of the truck bed above the ground). Alternatively, the truck cradle elevator of the present invention can be constructed in a plurality of configurations in which the joint locates the forks in the correct position to be able to substantially reach the ground for a respective plurality of truck configurations. In this case, truck forklifts would be configured and built to be housed in trucks that would most likely be used to support the respective truck forklifts. The number of configurations for this purpose would most likely be limited, and the lack of adjustability would likely result in greater challenges to determine how much of each configuration to save and how to respond to excess inventory for merchants. Thus, although the plural configurations of the non-adjustable truck forklifts may have strength and structural advantages, the adjustment mechanism provided by the brackets 38, 39 or some other analogous mechanism provides advantages to the traders. In addition, the provision of a truck forklift in a single adjustable configuration will also provide supply and manufacturing advantages. Figure 1 D shows a pattern of repetition of the mounting holes 40. It is understood that the model shown is not required. Rather, any model can be made within the spirit and scope of the present invention. In particular, the strength characteristics of a particular material and the configuration of the jointing brackets 38, 39, with holes in selected positions, can be analyzed and optimized for the adjustment brackets 38, 39 of the present invention. A corresponding model can be provided in an external part 41 of the mast 21, as shown in Figure 1 E. Similarly, the force characteristics of the external part 41 of the mast 21 can be analyzed with selected models of mounting holes 42 for determine which models and locations of the mounting holes will not weaken the mast excessively. One of the benefits that can be obtained is to maintain a minimum classification for the loads that are going to be supported by the mast 21. As shown in Figure 1 E, a first set of bolts 43 having two or three pairs can be provided. of pins 43 (two pairs of bolts are shown, however three or more pairs can be used). The two pairs of bolts 43 can be threadedly coupled through the mounting holes 40 (shown in solid lines and corresponding to the attachment element 35) in the adjustment bracket 38 and the mounting holes 42 (shown with solid line). and corresponding to a mast attachment element 54) on the external part 41 of the mast 21, as indicated by the continuous assembly lines of the schematic view. Alternatively, if the first mast is to be mounted on a truck bed of greater height, then the bolts 43 can be threadedly engaged through the mounting holes 40 (shown in solid lines corresponding to the support joint element 35). ), in the adjustment bracket 38, and through the mounting holes 42 (shown in dashed lines and corresponding to the mast attachment element 55) in the external part 41 of the mast 21, indicated by dotted assembly lines of the schematic view of Figure 1 E. As can be seen, this adjustment will move the mast 21 downwardly with respect to the adjustment bracket 38, and closer to ground level. As shown, the amount of adjustment can be one dimension 44 between the closest adjacent pairs of mounting holes 42. This dimension can be approximately 12.5 centimeters, for example. A distance 46 between the adjacent pairs furthest from the mounting holes may be approximately 17.5 centimeters. In this way, by adjusting the mast with respect to the adjustment bracket 38 in two increments of approximately 12.5 centimeters and approximately 17.5 centimeters, respectively, the mast can be adjusted approximately 30 centimeters. This same adjustment method can be applied to the second adjustment bracket 39 in an analogous manner. Further fine adjustments of the minimum level of the forks 24 can be made by adjusting the chain bolts 47 shown in FIGS. 1A and 1 B. In this way, an adjustment scale for the mast 21 and the mast 21 can be easily and advantageously obtained. 24 forks, to mount truck forklift 15 on trucks that have a full scale of truck bed heights. You can make models of mounting holes 40, 42 to provide incremental adjustments on a scale of approximately 5 centimeters to approximately 20 centimeters. Other adjustment increments can be from about 7.5 centimeters to about 15 centimeters. Since the finest adjustment that can be achieved with the chain bolts 47 can be in the range of approximately 10 centimeters to approximately 20 centimeters, the adjustment increments provided by the mounting hole models would be at least at the scale approximately 15 centimeters to at least approximately 25 centimeters, to allow adjustment on a full scale of approximately 35 centimeters for the highest and lowest truck beds, which have heights of approximately 80 centimeters to approximately 115 centimeters from ground level . It is understood that other patterns are possible, and that three or more bolts can be used in place of each pair for each subset of a complete set of corresponding mounting bolts and holes, to be used when mounting the external part 41 of the mast 21 in the adjustment brackets 38, 39. The sizes of the bolts can be, for example, 0.937 centimeters, 1.25 centimeters, 1.56 centimeters, # 8, or # 10. Advantageously, different sets of bolts 43 can have different sizes and can be matched with specific holes in the adjustment brackets 38, 39, the external part 41 of the mast 21, or both. Thus, a set of pins 43, which have a particular size, may correspond to a particular height which is determined by the particular truck's brand and the particular suspension in that truck. Therefore, it is possible to better secure the mounting of the truck fork lifter 15 at the appropriate height. It is understood that a single model and set of mounting holes 40 can be provided in the adjustment brackets 38, 39, and that a plurality of repeated matching patterns can be provided in the external part 41 of the mast 21. Alternatively, it can be provide a single model and set of mounting holes 42 in the outer part 41 of the mast 21, and a plurality of repeated matching patterns can be provided in the adjustment brackets 38, 39. Thus, the number of holes in the mast can be minimized. mount 42 on the mast. For explanatory purposes, a model can correspond to a joining element, and a plurality of models or joining elements can be superimposed to place the mounting holes of one model within the limits of another model of mounting holes, either in a piece of mast or on a bracket, for example. This is valid even if the models are repeated models. In another configuration the number of mounting holes in the mast 21 can be reduced by supplying two or more different sets of adjustment brackets 38, 39, with respective different sets of mounting holes 40 and bolts 43. The different sets of bolts 43 they can match the various sets of adjustment brackets 38, 39, to provide the desired mast heights and minimum fork heights above ground level for respective different combinations of truck brands and suspensions. Figure 1 F shows an end view of the mast external part, 41, and an adjustment bracket, 38/39, with the adjustment bracket 38/39 mounted on the external part 41 by means of bolts 43. For a lighter illustration is removed from the end view of Figure 1 F a pivoting connecting piece, 48, and a hydraulic ram connecting piece, 49. As shown in Figure 1 F, the outer piece 41 may have a section configuration in C. Alternatively, the section may have an AL @ O AI @ configuration. The configuration of the adjustment bracket 38, 39 can be adjusted to couple it with the configuration of the external part 41 of the mast 21. For example, the adjustment brackets 38, 39 can advantageously be housed in an external piece sectioned in I, 41. This arrangement would provide strengthening advantages against rotation or separation of the adjustment brackets 38, 39, from the mast 21. Similar advantages can be obtained by adding one or more flanges 50, 51, on external edges of the adjustment brackets 38. , 39. These flanges, 50, 51, can be coupled on one or both edges of the external part 41, as shown in Figure 1 F.

Some mast configurations will allow the application of only one of the tabs 50, 51. Some mast configurations may require any flanges 50, 51 to be shortened, so as not to affect the telescopic movement of the mast 21 and its components. In addition, the flanges 50, 51 can be provided only on portions of a section of the adjustment bracket 38/39. The bolts 43 can have locking threads and can be configured in such a way that each bolt extends to a position away from the inner surface of the external part 41. Thus, a carriage bearing or roller mounted on the telescopic inner part of the mast 21, will be able to move freely without obstruction in a channel formed between the internal part 21 and the external part 41. Although figures 1 D-1 F show the adjustment brackets 38, 39, as the height adjustment mechanism of the mast, it is understood that in its place other mechanisms can be incorporated for the same purpose of adjusting the height of the mast. For example, the holes shown in the external part 41 in Figure 1 E, can be directly coupled with the pivotal connecting piece 48 and the water connecting piece 49. The mounting holes 40 can be placed in the connecting piece. pivoting 48, and the ram connection part 49 and the bolts 43 can secure these parts 48 and 49 directly to the external parts 41. Additionally, or alternatively, the mast can be marked for attachment of the pivotal connecting part 48, the connecting piece of ram 49, or brackets 38, 39, with bolts, welding or interlocking mechanisms. The external parts 41 of the mast 21, or the brackets 38, 39, can be marked at separate locations or points for joining the mast with the brackets 38, 39, and the joists 30, 33, for example with welding. The entanglement mechanisms can be especially advantageous to provide a quick joint and a quick release joint. Although the adjustment brackets 38, 39, are shown as plates having a generally rectangular configuration extending along the external part 41 of the mast 21, the adjustment brackets 38, 39, can be replaced with any number of brackets of adjustment that have bases or mounting plates of any configuration, without departing from the spirit and scope of the invention. As shown in Figure 2A, the forward ends of the joists 30 and 33 can be supported in the bed of the truck in a special manner, which can be additional to the assembly of flat base material of the joists 30 and 33 in the bed 27 of the truck as described above. As shown, a tool box, 96, can be provided in bed 27 of the truck. The tool case 96 can be mounted on the bed 27 adjacent to the cab. The tool case 96 can be mounted in the truck frame from one side to the other of the bed 27, in a manner similar to the mounting of the flat base material described above. The tool case 96 may have two openings 99 and 100 near a base thereof; said openings 99 and 100 may be reinforced by respective channel members extending from bow to stern. The channel members can have openings large enough to receive the joists 30 and 33. Therefore, the tool box can be secured to the bed 27 of the truck and the underlying frame, and likewise the joists 30 and 33 can be additionally secured in the truck with the 96 tool box and the channel members. On the other hand, it is understood that the joists 30, 33 can be secured in the bed of the truck 27 without the help of the tool box, whether the tool box is used or not in combination with the truck and fork lift of the present invention. The tool case 96 may have covers 103 and 106 to have access to the interior of the tool case 96. One or more padlocks may be used, 109, or another locking device for securing one or both lids 103 in a closed condition, to protect tools and other access components from unauthorized persons. Figure 2B is a top plan view including the interior of the tool case 96 and the joists 30 and 33. The tool case 96 may have an interior 112 (shown in an empty condition in Figure 2B). The tool case 96 can be attached to the bed 27 of the truck by an iron angle, 119, which extends along a front base of the tool box. The iron angle 119 can be fixed to the tool case with bolts 121, or it can be attached in other ways to the frame members of the truck from one side to the other of the bed 27. Alternatively, or additionally, a lower wall 115 of the tool box may be attached to the bed 27 of the truck by the U-shaped iron, 118, or flat base material. The U-shaped iron 118 may have holes corresponding to the holes in the bottom 115 of the tool box and with holes from one side to the other of the bed 27 of the truck. Bolts 121 can be used to secure the U-shaped iron 118 and the tool case 96 in the bed 27. The bolts 121 can be attached to a truck frame under the bed 27. As shown, the channel members to receive the mounting beams 30, 33, can be closed channels, 124, which can be fixed and extended through a lower portion of the tool case 96. These closed channels 124 open rearwardly in the openings 99 and 100 shown in FIG. Figure 2A. In this way, the joists 30 and 33 can be received in the closed channels 124 for a secure connection of the joists 30 and 33 to the truck bed 27 and to the underlying truck frame. Figure 2B also shows a spare wheel hitch, 127. This spare wheel hitch 127 can be secured directly on the joists 30 and 33, on one or more transverse members, the flat base material and the truck frame, from one side to the other of the truck bed 27. For this purpose, the spare wheel hitch 127 can be secured by bolts 121 or other attachment mechanisms. It is understood that the spare wheel hitch can be replaced with a ball hitch or other hitch of any configuration of a variety. Figure 2C is a schematic top plan view of the middle of the tool case 96, generally encompassing a region corresponding to the area of the circle marked 2C in Figure 2B. However, Figure 2C includes components that can be located on one side or the other of the tool case 96. These components may include, without limitation, a mast pump, 130, which may be a single or double action pump; a tilt pump, 133, which can be a double action pump; first and second solenoid valve, 136, 139, connected to mast pump 130 and tilt pump 133, respectively; and first and second electric motor, 142, 145, connected to respective solenoid electric valves, 136, 139. A mast hydraulic line 148 can be extended from the electric solenoid valve 136 to the mast hydraulic ram 152, as can be seen from the view of Figures 2C and 1B. A hydraulic input line 155 and an output hydraulic line 158 can be connected to the electronic solenoid valve 139, and to one or more hydraulic tilt rams 45. Electricity can be transported to each electric motor and each solenoid valve from the system electric truck, a separate electrical system, or a battery by means of power lines, 161. These lines can be connected to a contact strip, 164, which can be mounted on an internal wall of the tool case 96 or in any Another location. Corresponding electrical lines of the contact strip can be extended to respective control boxes, 167 and 170. These control boxes can incorporate bipolar-bidirectional spring center reed switches. The control boxes 167 and 170 may be separated from each other, or may be joined as shown in Figure 2D. The control boxes 167 and 170 can be mounted on an instrument panel or other stationary location, or they can be part of a pendant, 173, which provides the user with a measure of mobility while operating the controls. In this regard, an electrical cable, 176, which connects the energy strip 164 to the control boxes 167 and 170, can have a length of between 1.22 meters and 2.44 meters, for example, to allow the user to control the forklift. 15 from the cab, outside the cab near the truck bed, or a small distance from the truck. The cable 176 can be connected to the control boxes by means of a strain relief connection to reduce the deformation of the wires. As shown in Figure 2D, the spring center reed switch, 171, can control the single-action mast pump motor, 142, and valve 136, to cause the mast to move in an upward direction, a downward direction under the influence of gravity, or remain in a neutral stationary position as indicated by the upper, lower and central positions marked on the control box 167. Alternatively, the pump motor 142 may be a double-acting motor for activation in both directions. Similarly, the spring tab 172 connected to the tilt pump motor and the valve can be operated to cause the forklift 15 to tilt inwardly, tilt outwards, or remain in a stationary position. The corresponding positions of the spring-loaded tongue 172 are shown in Figure 2D. Each spring tab 171 and 172 is spring driven to a central neutral position. Therefore, the forklift will remain in a stationary condition unless a user moves the tab switches 171 or 172, from the neutral position to positions up, down, out or inside. It is understood that the present invention can thus incorporate an electrical control system on the hydraulic in which each driving position is in an on or off position. To control the actuation speed of the rams a restriction in the hydraulic system can be provided. Thus, relatively small movements of the forklift can be made. For fine position adjustments, tabs 171 and 172 can be activated and deactivated for very small incremental changes of positions. Alternatively, a more complex electrical over hydraulic proportional system can be realized. Alternatively, a purely hydraulic drive system can be incorporated. However, doing so would require sending hydraulic lines to the cab of the truck or to any location from which the user would operate the system. The electrical system on the hydraulic can be provided by a wireless control system with a wireless control box 177 wirelessly connected to the pumps by means of a transceiver / converter 178, as shown in Figure 2E. The transceiver / converter 178 can receive or transmit radio frequency signals to and from the wireless control box 177 through the air. The transceiver / converter can also convert the radiofrequency signals into command signals that control the solenoids 136, 139 and the motors 142, 145. The transceiver portion of the transceiver / converter can operate as a single receiver in accordance with the present invention. The control box 177 of Figure 2E may include elements similar to those described with respect to the control box 167 of Figure 2D above. For example, control box 177 may include a spring-center tab switch, 379, which controls the single-action mast pump motor, 142, and valve 136, to cause the mast to move in one direction ascending, a downward direction under the influence of gravity, or remain in a stationary neutral position, as indicated by the up, down and central positions marked on the control box 177. Similarly, a spring tab 382 connected to the tilt pump motor and valve to cause the forklift 15 to tilt out, tilt inward or remain in a stationary position. The corresponding positions of the spring-loaded tongue 382 are shown in Figure 2E. Each spring tab 379 and 382 is spring driven to a central neutral position. Therefore, the forklift will remain in a stationary condition, unless a user moves one or more of the tongue switches 379 and 382, from the neutral position to the driving positions up, down, out or in. As shown, the control box 177 may include additional buttons to control the forklift 15. For example, a bypass button, 385, may be provided to bypass a restriction in the lines that usually retards the speed at which it is driven. move the ram. Thus, the bypass button 385 can be depressed to increase the rate of descent of the forks when for example they have no load, in such a way that otherwise they would descend slowly. Another security or activation button, 388, can be provided on a different face of the control box 177. To operate the system in any way with the switches 379, 382, and possibly even the bypass button 385, it may also be necessary. a user presses the security button 388. It may be necessary to keep the security button 388 depressed to provide power to the other switches 379, 382, or the bypass button 188. An extra on / off manual master switch may be provided. on the outside of the tool case 96, for example, to provide power to the system, including the control box 177. It is understood that the control box 71 shown in Figure 1A may include the same features described with respect to the case of control 177, and may vary from the same in that the control box 71 of Figure 1A is connected to the hydraulic components by means of wires. As shown in Figure 2C, a larger hydraulic reservoir, 179, can be incorporated with the present invention to accommodate a large capacity of the hydraulic mast lifter ram and tilt rams 45 (one or more) of the elevator. hairpin 15 Additionally, a diverter valve, 182, may be provided with a manual lever, 185, to manually swap the mast pump connection to one or more trailer support rams as will be described in more detail below. The diverter valve 182 is connected to each of the forklift hydraulic ram 152 and to one or more hydraulic trailer support rams 186, as shown in Figure 1 B and described in more detail below. It is understood that the diverter valve 182 may include a solenoid and may be controlled from the control box 71, 173 or 177, similarly to the control of the pumps and valves associated with the motors 142, 145. The tool case 96 also it may have a winch, 188, supported therein, and a winch cable, 191, may be extended through a wall of the tool case 96, as shown in FIG. 2C. Among other things, winch 188 can be used to pull a loaded pallet along the bed of a trailer via cable 191, as shown and described with respect to Figure 3B below. The truck fork lifter, 15, in combination with the truck 15, can be used in conjunction with other devices shown in Figures 3A-5B to provide a more complete lifting and hauling system. As such, the hauling system may include a trailer, 200, with a gooseneck tongue, 203, for a connection with the hitch as shown in Figures 1A and 1B. The system may also include a carriage. of pallet, 206, which can be transported on the trailer 200 together with a load that can include the pallets 209, for example. The trailer may include stowable ramps, 212, 215 and 218, which can be slid on ramp holders, 221, for storage during periods of transport and non-use. It is understood that the ramps 212, 215 and 218 and the ramp detents 221 can be located at any position along the trailer. In particular, it is understood that it will be necessary to load the trailer with an amount greater than the total weight centered slightly forward from the center of the trailer. Thus, it is understood that the relative positions of the loaded pallets 209 and the pallet truck 206 may be varied, depending on the particularities of the load to be transported. The trailer 200 can be any of a variety of trailers, but for safety purposes it must have a rating greater than or equal to any maximum that will be drawn onto the trailer. As shown in Figure 3A, one or more trailer support rams, 186, can be provided in respective corners of the trailer. Alternatively, a towing ram 186 may be provided, located generally centered along a front edge of the towing bed, as shown in Figures 3B and 3C. Figure 3C is a schematic end view of the trailer 200, taken generally in the direction of the arrow 3C of Figure 3B. The rams 186 may have a stored position in which they are retracted upwardly, and a position of use in which the rams slide downwardly through a sleeve 227 and are locked in a position of use by a pin 230, as shown. in Figure 3A, for example. Alternatively, the rams 186 can be mounted to rotate in and out of a position of use in a pivot 228, as shown in Figures 3B and 3C. Thus, when it is desired to remove a loaded trailer 200 from a truck, the trailer and cargo can be supported by the tow rams 186, and moved to a condition disengaged by the rams 186. The drive of the rams 186 can be provided by a hydraulic pump such as the mast pump 130. As indicated above, a diverter valve 182 may be provided to alternately connect the pump 130 and the solenoid valve 136 of the mast hydraulic ram 152, to hydraulic tow rams 186. Hydraulic tow rams 186 can be fed simultaneously by a single line 148 that is distinctly divided into as many lines as there are tow rams 186. It is understood that additional tow rams 186 can be provided in Rear corners or anywhere on the trailer for greater stability or versatility. As shown in Figures 3B-3C, the manually slidable telescopic supports, 231, may include pins, 230, for manually adjusting an extension of the supports 231 in a downward direction for ground engagement in a rest position, after have used the towing rams or 186 to lift the trailer. Once the supports 231 are extended, the trailing rams 186 can be released. Thus, the trailer can be provided with a greater degree of stability while loading and unloading. As shown in Figure 3B, the winch cable 191 can be sent from the winch to a loaded pallet 209, and can be coupled around a base of the paddle 209, in order to move the paddle along the Trailer bed 200. In this way, the pallet 209 can be relocated or oriented for engagement with the forks of the truck's fork lifter 15. To protect the forklift ram 152, the winch cable 191 can be screwed through of a guide, 232, which holds the winch cable 191 out of engagement with the forklift ram 152 while pulling the blade 209, for example. The winch cable guide 232 can be supported on a lower edge of the forklift plate 84 as shown in Figure 3D, which is a view of the fork lift mast taken generally in the direction of the 3D arrow of Figure 3B. As shown in Figures 3B and 3D, the truck fork lifter 15 can include a compensating spool, 303, which can be mounted on a lower side of a rear portion of the truck frame or bed 27. This compensation spool it can be urged to pull a line 306 having one or more video and power cables to the respective cameras 92, 94, 95, 97, shown in Figure 1A. Thus, the video and power cables can be fed to an inner end of the line 306 on the compensating reel 303. As the mast is raised or lowered, an outer end of the line 306 can be removed from the reel 303 to provide the slack necessary as the camera moves along with the mast 21, the fork 24, or the fork plate 84. The line 306 can be extended on a pulley 309 that can be rotatably mounted on an arrow, 312, which also holds one or more chain pulleys for lifting the fork plate 84. Similarly, as the fork plate moves in a direction that requires a shorter length of the line 306, the compensating reel 303 will automatically retract and a portion of the line 306 on the offset reel 303. In this way, the compensation reel 303 reduces the likelihood of a loose line becoming tangled or dragging on the ground. e the use of the truck fork lifter 15. At the same time, continuous observation of images can be provided as the forks adjust to higher or lower heights, without the need to maintain the course of the lines to the camera. When the compensating reel 303 is mounted under a rear portion of the truck bed 27, the usual location of the spare tire of the truck will be occupied by the compensating reel 303 and the housing holding the compensation reel 303. As shown in Figures 3A, 3B and 3C, one or more spare tires 315, 318, can be supported on the gooseneck 203 of the trailer. For this purpose, a post 321 can be supported on the gooseneck 203, extending upwardly therefrom. Thus, the spare tires 315, 318, of the trailer or truck can be conveniently supported for easy retrieval as required. Figure 3A also shows a manual pallet truck, 342, which can be supported on a rear part of the trailer 200. The pallet truck 342 has a pair of forks, 345, 346, configured to engage in a pallet. The pallet truck also has a jack handle, 349, for lifting a load placed on the forks and also for guiding the truck during use. A pair of closely spaced wheels, 352, 353, are connected to the jack handle. This pallet truck is known, but usually does not rest on a trailer in the manner shown in Figure 3A. There are three primary securing mechanisms that firmly hold the pallet truck on the trailer 200. First, a stop traverse bar, 355, is mounted on a stop, 356, in a position extending downward and rearward. As shown, the closely spaced wheels 352, 353, are mounted on the stopping cross bar 355 and engage the stopping crossbar, generally at an angle between the wheels 352, 353, under the force of gravity. This mechanism will prevent separation of the pallet truck from the trailer 200 under most circumstances during traction of the trailer 200 with a truck. Second, the pallet truck 342 is secured by a locking wire 358, permanently attached to a first ring 361 mounted on the tow bed frame and removably attached to a second ring 364 mounted on the tow bed frame. The connections can be formed by means of cable clamps and links that can be opened, for example. As shown, the cable forms a support belt that engages the pallet truck on a rear side thereof and extends forward and laterally outward toward the rings 361, 364, when the locking cable 358 is in a joined state . Therefore, even if the closely spaced wheels 352, 353 were to pass through the stopping cross bar 355 during a ride over potholes, for example, the blocking wire would prevent backward movement of the paddle truck away from one end. rear of the trailer 200. Third, a squeezable strap, 367, having a hook 370 attached thereon, is linked through a closed ring 373 of the jack handle 349. The hook can be hooked on the first ring 361 , and the belt can be tightened to provide an assurance tension that will hold the pallet truck in place on the trailer. The stop 356 is mounted on the trailer 200 by means of vertical spacers, 376, which form spaces between a lower side of the trailer bed and the stop 356. These vertical spacers 376 can be placed near the outer sides of the truck. pallet, to prevent lateral movement of the pallet truck 342 when the trailer 200 is being pulled with the pallet truck 342 resting thereon. As shown in Figures 3A and 4A-4C, the vane cart 206 is propelled by a motor 233 that drives a wheel 236. The motor also operates a hydraulic pump and reservoir system, 239, which is connected to a ram carriage, 242. Carriage ram 242, in turn, raises and lowers a carriage crane arm, 245. A proximal end of carriage crane arm 245 is pivotally attached to a vertical frame member, 251, of the frame. of pallet truck 254. The carriage crane arm 245 has a cable 248 attached to a distal end thereof. A lower end of the cable 248 is attached to a suspended fork 257, which engages and holds a load such as the vane 260, as shown in Figures 3A and 4A-4C. In this way, the vane carriage ram 242 drives up or down the crane arm 245 and the suspended vane fork 257 to raise or lower the load 260 ad libitum. The pallet truck 206 advantageously provides a device that can be maneuvered in and out of narrow spaces to lift and move loads. For example, if it is required to move a load to a shelter or structure having a gap of little clearance, the pallet truck 206 is well adapted to supply a load in said structure. The pallet truck 206 is also an all-terrain vehicle that can be maneuvered over contours and hardness of terrain of great variation. The pallet truck 206 can also be maneuvered and guided by a steering lever 261, for example, connected to the rear wheel (s) 236 for navigating the turns. On the other hand, front wheels 263 are placed to support the frame 254 of the pallet truck. The motor 233 and the hydraulic system 239 can be mounted on a platform that is pivotally attached to the frame 254, for example by means of a vertically oriented pin. Thus, the turn can be effected by pivotally moving a rear portion of the vane cart with respect to a front end thereof.

The frame 254 is configured to sustain loads of three times or more the same pallet truck weight 206. That is, the pallet truck may weigh about 450 kilograms or less while it is capable of supporting and transporting loads of 1, 350 kilograms or more. As shown in Figures 4A-4C, the pallet truck frame, 254, may have external frame side arms, 324, 327, which generally mount a load 260 to be carried. The load 260 can then be lifted and load platform crossbars 330 can be placed below the load 260 and locked in position on the frame arms 324, 327, for example by means of pins 333. Then the load 260 can be lowered onto the crossbars of loading platform 330 for transport. The loading platform cross bars 330 can be formed of closed or open channel members with inverted L-section end brackets, which engage with a stop on an upper surface of the tiller arms, as shown in Figure 4A . As shown in Figure 4A, the vane cart can be steered by articulating the rear wheels 236 with respect to the frame 254. A steering pivot assembly 391 can be mounted on a lower side of a channel member 394. An arrow of direction 395 may extend downward and may be pivotal with wheels 236 about a vertical axis, while a center pivot assembly may protrude upwardly through channel member 394. Thus, the steering pivot arrow 395 of the assembly The steering pivot can move pivotally on a generally vertical axis. The channel member 394 can be mounted to the frame 254 by means of an iron elbow member 397 and an angular member 400 for increased force. Hydraulic and engine support members 403, 405, 407 and 409 can be fixed in the channel member 394. These members 403, 405, 407 and 409 can receive and support the engine 333 and the hydraulic pump and reservoir 339, as shown. A hydraulic motor and valve platform 412 can be slidably supported on a steering rod 415 rigidly connected to the steering arrow 395. The steering lever 261 can be connected to an external end of the steering rod 415. Figure 4B shows a top view of pallet truck 206, with motor 333, hydraulic pump and reservoir supported on support members 403, 405, 407 and 409. Motor 333 drives a hydraulic pump 418, which draws hydraulic fluid from a tank 421 and moves it through a closed circuit. A lever control valve, 424, controls that the hydraulic fluid goes directly back to the reservoir 421 when it is in a neutral position, or in a direction of the first and second direction through a diverter valve 427. When the valve lever control 424 is pulled back completely, fluid can be forced in one direction to lift a load or drive wheels 236 in a backward direction. When the lever control valve 424 is fully driven forward, fluid can be forced in one direction to lower the load or drive the wheels in a forward direction. The diverter valve 427 determines whether the fluid is sent to the pallet truck ram 242 or the hydraulic motor 430. Thus, the diverter valve also provides a safety mechanism. That is, in this configuration, the pallet truck 206 can not be lifted by the pallet truck ram 242 and at the same time drive the wheels 236 of the pallet truck. When the diverter valve sends the fluid to the hydraulic motor 430, the hydraulic motor 430 can drive the wheels 236 by means of a chain 433, for example. The direction of the impulse force is adjusted by the user as it engages the lever control valve 424. Similarly,, the user can selectively raise or lower the crane arm 245 with the same lever control valve, when the diverter valve has been adjusted to send the fluid through the ram 242. Figure 4C is a front plan view taken at along the direction of arrow 4C of Figure 4B. As shown, the frame 254 can be a laterally expandable frame in which the spacing of the side frame arms 324, 327 can be adjusted to match the width of a load as required. Upper crossbar sleeves, 436, 437, can slidably engage an upper transverse bar 440. Similarly, lower crossbar sleeves, 443, 444, can slidably engage a lower transverse bar 447. To adjust the width of the vane cart, they can eliminate forces from the frame by lifting the carriage 206 partially or totally out of engagement with the floor surface. The user can then couple the heads 450 and 453 with a mechanical wrench or other turning device, and turn threaded arrows 456 and 459 inside or outside threaded sleeves 462 and 465, respectively. In a more retracted position, the threaded arrows can engage a detent, which can be provided by an external wall of the vertical frame member 251. In this position, the pallet carriage can be narrowed sufficiently to fit in a normal wide bed of a delivery truck, to easily drag the pallet truck. Figure 5A is a side plan view and Figure 5B is a top plan view of a strut 266 for holding and storing the truck's fork lifter 15 when it is not mounted on the truck 18. The strut 266 may include two stringers elongate, 269, 270, in the form of channel members. A plurality of vertically extending frame members, 272 and 275, can be fixed to the stringers 269, 270, and extend upwardly therefrom. Diagonal strengthening members 278 can also be extended in a vertical direction, as well as diagonally in a horizontal direction above the longitudinal members 269 to a horizontal frame member 281. Beams 269, 270, and the combination of vertical, horizontal and diagonal members of frame, 272, 275, 278 and 281, can support the fork receivers 284. The fork receivers 284 can be rectangular tubular channels with open ends to receive the forks 24 of the truck fork lifter 15. In this way it is possible to supporting a truck 18 in such a way that the forks 24 are inserted in the receivers 284. Then the truck's forklift can be operated to transfer the load of the forklift 15 to the strut. Before the load is transferred in this manner, the bolts 69 securing the joists 30, 33, or the flat base material, can be removed from the truck frame 336, by decoupling a nut 339 that can be welded or secured from another way to the truck frame 336, as shown in Figure 5A. You can disconnect any hydraulic line from the hydraulic pumps, and you can disconnect any electrical and video cables. The hydraulic lines towards the truck fork lift 15 can be disconnected by means of a quick disconnect, for example. All loosening of the bolts and disconnections of the lines can easily be done in about 3 minutes. And it can take only ten minutes to completely remove the forklift, including the mast and mounting rails along with the hydraulic rams and the components mounted on these members. The hydraulic pumps, controls and monitor can remain connected to the truck. By separating the forklift from the truck, the joists 30 and 33 can slide out of the channels 124 of the tool case 96, when the channels 124 are part of the truck's forklift 15 assembly. As shown in FIGS. Figures 5A and 5B, the stringers 269, 270, can be set to a smaller width than the rear wheels 287 of the truck 18, so that the stringers 269, 270 can generally be mounted on the truck during the transfer of the truck's forklift 15 the bed of the truck on the prop. As shown with dotted lines in Figures 5A and 5B, the fork receivers 284 can be placed from bow to stern in the frame members of the strut 266, depending on the desired load distribution. Figure 6A is a front plan view of a fork lift 15 with a carriage 500 in a locked position. Those skilled in the art will understand that the term "carriage" can be used interchangeably with the term "fork plate". The carriage 500 may include a top member 502, a lower member 504, and support bars 506 and 508. The carriage 500 can be held in a locked position, which prevents inadvertent movement of the carriage 500 with respect to the mast 21 and allows the proper use of a joining tool that can be attached to the carriage 500. Any mechanism of a variety can be used to retain the carriage 500 in a locked position. For example and without limitation, the carriage 100 may be retained in a locked position using a tension element 510. The tension element 510 may include a rod 512, a cylinder 514 configured to receive the rod 512, a locking pin 516 and a safety pin 518. The tension element 510 can be connected to the carriage 500 and to the mast 21. The locking pin 516 can be inserted through corresponding openings inside the rod 512 and the cylinder 514, to join together the rod 512 and cylinder 514 in a predetermined relative position which also establishes a predetermined length of tension element 510. The locking pin can be inserted and held in place by means of safety pin 518. In this way, the retention of the carriage 500 in an established position with respect to the mast 21 by means of the tension element 510, provides the desired restriction of movement required to operate the binding pins. It is understood that the rod 512 and the cylinder 514 can be secured together at any position of a variety of predetermined relative positions, corresponding to respective predetermined lengths of the tension element 510. Referring to FIGS. 6A and 6B, a bolt of lock 520 can be inserted through lower member 504 of carriage 500 and coupled with a flange 522 of tension element 510, to secure tension member 510 in carriage 500. Lock pin 520 can be used to lock the carriage 500 in the mast 21 when for example the tension element is a one piece tension element. When the tension element has two or more pieces, or is adjustable, as illustrated in Figures 6A and 6B, then the locking bolt 520 can be used in conjunction with the rod 512, the cylinder 514 and the locking pin 516 of the tension element 510, to lock the carriage 500 in position with respect to the mast 21. Although it is shown that the tension member has a hook or lip on the rod to firmly attach a lower side of the mast base, and it shows the cylinder 514 secured by a locking bolt 520, it is understood that alternatively these mechanisms can be inverted, or additionally can be included in the rod 512 and the cylinder 514. That is, hook or lip portions, or bolts can be incorporated of locking, to secure the upper end, the lower end, or both, of the tension member 510 in the carriage 500 and the mast 21. As shown in Figure 6A and in the sectional view of Figure 6C taken along the the lines 6C-6C of Figure 6A, an additional locking mechanism may be used to prevent movement of the forks 24 with respect to the carriage 500. A fork lock may include a U-bolt., 530. Alternatively, the fork lock may be of any configuration adapted to retain the fork in a relationship of abutment with the members or plates 502, 504. In the simple form shown in Figures 6A and 6C, the fork lock may include a U-shaped bolt 530, which can then be secured to the lower member 504 of the carriage 500 using fork lock nuts 532, coupled with each end of the U-shaped bolts 530. In this way, the securing the forks in the carriage prevent the movement of the forks 24 with respect to the carriage 500 when a joining tool is attached to the forks 24, with the forks 24 in a position of use, as can be seen in figures 6A, 6C and 6F. It will be understood that the fork locks for securing the forks 24 in the carriage 500 can be used independently of other locking devices, or can be used in concert with other locking devices to further prevent inadvertent movement of the forks 24 or the carriage. 500, one with respect to another, or with respect to the mast 21.

Figure 6D is a sectional view taken along the line 6D-6D of Figure 1A. Figure 6D shows portions of the carriage 500 that include the upper member or plate 502 and the support bar 508. The support bar 508 of the carriage 500 can have at least one carriage roller, 540, supported thereon, as shown in FIG. shown in Figures 6A and 6D. The roller 504 can make bearing contact with an internal guide or channel formed by fork lift mast elements 15, as the carriage 500 moves up or down. For example, as shown in Figures 1A and 1B, the inner section of the mast 21 may include bars I that form inwardly opening channels in which rollers 540 can roll. In this way, one or more can be placed. more detents 544 on a tab of the bar I forming the viewing channel inward of the inner section of the mast 21. The detents (one or more) 544 may be placed to hinder the movement of the rollers 540 in one or both directions along the channel. In particular, detents 544 can be used to prevent movement of the carriage in an upward direction, to allow proper application of a joining tool, similar to the function of tension element 510 described above. The detent 544 can be coupled to the inner section of the forklift mast 21 by means of a lock nut 546, as shown in Figure 6D. The detent 544 can be of a configuration complementary to the roller 540. This allows the retainer 544 to better impede the movement of the roller 540 when a joining tool is in use with the fork lifter 15. For example, by supplying one or more detents with a complementary concave shape which engages the roller 540 in a multitude of points on a surface, the concentrations of force can be reduced and the retainer can thus provide a strong and positive retention. It will be understood that although it is shown that the detent 544 and the roller 540 are located adjacent the upper member 502, it will normally be advantageous to place the rollers along the support bar 508 for convenient load distribution. The detents 544 can be placed in any position along the internal section of the mast 21 to positively arrest the carriage at any position from a variety of predetermined positions. As shown in Figures 6E and 6F, a carriage joint assembly 550 can be connected to a forklift by means of the carriage members 502, 504. The carriage joint assembly 550 can include an upper bolt 552, a lower bolt 554, a lever 556, a locking bolt 558, an upper element 560, a lower element 562, and an opening 564, which extends from one side to the other and at least partially defined by the lower element 562. The carriage joint assembly can be coupled with the forklift by means of the upper bolt 552 and the lower bolt 554. The upper bolt 552 can be coupled with the upper member 502 of the carriage 500, and the lower bolt 554 can be coupled with the lower member 504 of the carriage. Alternatively, according to Figure 6F, the carriage joint assembly 550 may also include one or more sleeves 551, coupled with the carriage joint assembly 550. The sleeve 551 may be configured to receive a fork 24. The fork 24 it may contain a sleeve lock 553 to prevent the sleeve 551 from slipping inadvertently out of the yoke 24. The yoke 24 may also be in a locked position with the yoke lock 530 coupled with the lower member 504, as described above. Thus, this configuration prevents the movement of the fork while a joining tool is in use. Figure 6G shows a joining portion 566 of a tool coupled in a carriage coupling assembly 550, with the carriage joint assembly in an assembled state. The upper element 560 has an upper surface for contacting the joining tool 566 and for retaining it. The lower element 562 has a lower surface with an opening 564 that extends from one side to the other and opens outwardly through the lower surface. The locking bolt 558 can be movably disposed within the carriage joint assembly 550. The locking bolt 558 can be extendable externally through the opening 564 to lock the joining tool 566 in the carriage joint assembly 550. the same lever 556 shown in Figures 6E and 6F is also present in the embodiment of Figure 6G, and is pivotally moved to move the locking bolt 558 between a locked position and a released position, for example by camming. However, the lever 556 is not visible in Figure 6G because it has rotated downward to a locking position behind the structure of the connection of the lever 556 with the locking bolt 558. Thus, the lever 556 can have a first position of lever corresponding to a position of locking bolt 558, in a retracted position within carriage assembly assembly 550, as shown in Figures 6E and 6F. The lever may also have a second lever position corresponding to a position of the locking bolt 558, in a prolonged position extending outwardly through the opening 564, when the carriage attachment assembly 550 has a joining tool 566 secured therein, as shown in Figure 6G. This allows the joining tool 566 to be easily and firmly attached to the joint assembly 550 and the carriage 500. As shown in Figure 6H, the forks 24 of a forklift can be rotated out of their normal position of use for provide access to forklift truck 500. As described above, the forklift can be maintained on a truck 568. Thus, the fork 24 can be rotated out of a position of use on the bed of the truck 568. The fork 24 can be rotated until it makes contact with a fork. 570. The guard 570 can be configured to protect other components of a forklift that are located inside the bed of the truck 568. Then the forklift can be raised by moving the end of the forks 24 to one or more cavities. 572. The cavity 572 prevents movement of the tips of the forks 24 out of the cavities, and thus retains the fork 24 in a position turned away from the carriage 500. Turning the forks 24 in this way allows access to the carriage 500 of the vehicle. forklift for purposes including, without limitation, attachment of attachment tools. It will be understood that the movement of the fork 24 to provide access to the carriage 500 may be effected in other ways, for example, without limitation, by completely removing the forks. Figure 7 is a side view of a plurality of joining tools 566 that can form a group from which a user can selectively choose. The plurality of joining tools 566 may include one or more of backhoes 580 and 582, a rotary cutter 584, a hydraulic breaker 586, an angle broom 588, a cement mixer 590, a former 592, a trencher 594, a drill bit 596, and a plurality of other joining tools that can be configured to attach them to a forklift in accordance with the present invention, as indicated by an ellipsis 598. Particular embodiments of the present invention can be configured to receive all the tools of the invention. 566 junction possible, or can be specifically configured to receive a larger or smaller number of joining tools 566 than shown in Figure 7. Other configurations of joining assemblies can be made to receive other configurations of joining tools, without departing from the spirit and scope of the invention. It is understood that hydraulic pumps are connected to the actuators by means of valves for the various embodiments and aspects of the present invention. Controls may include electrical over hydraulic controls, manual levers, or a combination of electrical and manual controls and electrical controls, so that if electrical controls fail, then manual levers would provide the necessary redundancy. It is also understood that although the tanks and pumps described above in general and with reference to the accompanying drawings can be considered pumps dedicated to one or more particular hydraulic circuits, the pumps described can also represent other pumps, or be replaced by other pumps. For example, an auger attached to the forklift may need a pump of much greater capacity than is required to raise and lower the forks. Thus, the pump or pumps may comprise two or more pumps, or may be provided by one or more pumps connected to a truck transmission. In addition, a pump or group of pumps of greater capacity can be connected to the actuators by means of a group or valve station. These valves can have electrical or manual controls.

Exemplary methods for delivery service Electric-on-hydraulic solenoid valves create flexibility to remotely operate the forks from the cab or from the outside of the truck. Sometimes this option is necessary due to a particular terrain in which the insertion of a pallet is facilitated by observing the action from a particular vantage point. Thus, loading or unloading of pallets on uneven ground can be facilitated using a remote cable control system or wireless remote control.

Operation of the truck fork lift, pallet truck and trailer Four pallets can be loaded onto the trailer in a warehouse and transported to a delivery site. The operator / user of a truck can pull in front of an access road. The pallet truck can be unloaded and placed in a garage where the pallets are going to be placed (a parked position of ideal unloading in a residential subdivision is in a dead end, with the trailer centered for easy access on both sides of the trailer). Otherwise, it may be necessary to pull the pallets to an accessible side of the trailer by means of a winch and winch cable, similar to what was described above. The operator / user can leave the truck walking and turn on the power switch of the system to enable the operation. Then the user can disconnect the safety chains and any electrical connection between the truck and the trailer. The user can deploy a "jack" hydraulic cylinder or hammer on the trailer and make a coupling of the truck and trailer ready to be released, so that the tongue of the trailer can be lifted. It is important to remember that the trailer can be loaded with up to 5,400 kilograms of product.

The operator can use a hydraulic quick disconnect hose that extends from the trailer hydraulic cylinder or ram to an auxiliary hydraulic outlet to raise and lower the trailer. The operator can raise the trailer and then disconnect the auxiliary hydraulic hose. Then the user can move the truck forward and unfold each fork from a transport position to a working position, and remove the safety belts of a product paired on the trailer. The user can support the truck on either side of the trailer, centering first on the rear pallet. Observing a camera monitor inside the cabin, the user can place the forks to insert the pallet. The user can rest slowly on the palette while watching the monitor screen. Once a pallet has been inserted and raised at least slightly with the forks, the user can drive slowly to a position approximately 1.52 meters from the trailer. Then you can lower the pallet to a height of approximately 0.61 meters from the ground. With the load in this position, the operator can then drive to the garage approximately eight kilometers per hour or slower and place the palette inside. As the user places the loaded pallet on the floor of the garage, you can avoid hitting the house or the garage always looking at the monitor. Similarly, the hydraulic pressure allows the user to selectively control the height of the truck's forklift, including the mast. The mast can be configured not to exceed approximately 1.97 meters in height when the truck is unloaded, so as not to hit the garage door when the truck is pulled in and out of the garage. Other mast heights may be less than or greater than 1.97 meters. Depending on the terrain on which the load is to be transported by the fork lift of the truck, a belt can be used to wrap the load and the fork lift mast to stabilize the load. In this case, it is not necessary to remove the belt before leaving the garage. Then the user can return to the trailer in the truck and repeat the procedure described above. This method of operation can reduce the download time by approximately fifteen to twenty minutes per delivery, compared to the method that a crane uses. More importantly, the user or operator can remain in the cabin when moving and unloading the pallet of the forks. In some cases it may be necessary to place the palletized loads in a garage that has a vertical clearance lower than the minimum height of the truck's forklift mast, or it may be necessary to manipulate the loads in a manner that is difficult to achieve with the Fork lift truck In these cases, the palletized load can be placed on the ground at any convenient location and the pallet truck can be used to attach, lift, load the load on a pallet truck support frame, and transport the load to a location for its final placement. Therefore, the pallet truck can be used to move the pallet to the garage when, for example, the passage is too narrow for the truck forklift. In case there is no paved access road, the truck can be supported on a sheet of plywood that has been previously placed on a pair of flat pallets, for example. The palletized load can be placed on the plywood sheet by the truck's fork lift. Then the palletized load can be moved with the pallet truck to the final delivery location inside the garage. Although the accompanying drawings and much of the foregoing description are presented in the context of a fork truck or forklift truck that can be supported on a conventional or modified delivery truck, it is understood that the teachings of the present invention can be applied to any vehicle. Any vehicle of a variety can hold the forklift or attachment tools of the present invention. These vehicles can be broadly referenced by a minimum weight classification, such as a vehicle with% tonne rating or more, or can be referred by a scale of weight classifications, for example. Vehicles in accordance with the present invention may include Cabover, delivery trucks, modified delivery trucks, including delivery trucks with removed beds or raised suspensions. Vehicles can also include small or large vehicles that are not designed to be driven on regular roads. The vehicles with which the present invention can be realized may include all-terrain vehicles or road vehicles. The joining tool aspects of the present invention can be applied to conventional forklifts (including all-terrain forklifts), or equally to non-conventional forklifts. Conventional forklifts include dedicated forklifts that are forklifts not truck mounted. The embodiments and examples set forth herein were presented to better explain the present invention and its practical application, and thus to enable those skilled in the art to execute and use the invention. However, those skilled in the art will recognize that the description and the foregoing examples have been presented for illustrative purposes only. The description disclosed is not considered exhaustive or limiting of the invention to the exact form described. Many modifications and variations are possible in light of the above teachings without departing from the spirit and scope of the following claims. For example, other types of actuators may be used in place of the hydraulic actuators described above. These actuators may include electric actuators, pneumatic actuators, magnetic actuators or mechanical actuators, without departing from the spirit and scope of the invention. The electric actuators can include, for example, a combination of screw and lead nut driven by a motor.

Claims (67)

1. NOVELTY OF THE INVENTION CLAIMS 1. - A forklift for attachment to a truck frame, comprising: at least one mounting beam; a fork lift mast pivotally connected to the mounting beam; a fork plate mounted slidably on the mast; an elevator actuator connected to the mast and the fork plate to move the fork plate along the mast; and at least one tilt actuator connected to the mounting beam and to the mast to tilt the mast. 2. Fork fork according to claim 1, further characterized in that it has a deployed position of use in which the mast is placed at an angle on a scale of about 45 degrees to about 110 degrees with respect to the beam of assembly, and a stored position in which the mast is positioned at an angle on the scale from about zero degrees to about 45 degrees with respect to the mounting beam. 3. The forklift according to claim 1, further characterized in that it comprises a pair of tilt actuators that includes the tilt actuator (at least one), wherein the tilt actuators are connected to the mast and the joist of assembly. 4. - The forklift according to claim 1, further characterized in that it comprises: a first hydraulic pump hydraulically connected to the elevator actuator; a second hydraulic pump hydraulically connected to the tilt actuator (at least one); and first and second control switch, operatively connected to the first and second hydraulic pump respectively to provide electrical control over the hydraulic. 5. The forklift in accordance with claim 4, further characterized in that the first and the second switch are bipolar switches for simple on-off operation. 6.- The forklift in accordance with the claim 4, further characterized in that it comprises a pendant, wherein the first and the second switch are mounted on the pendant to allow a user to selectively operate the hydraulic pumps from any location of a variety. 7. The forklift according to claim 4, further characterized in that the first and second switches are connected wirelessly to the pumps for remote control of the elevator and the tilt actuators by the user. 8.- The forklift in accordance with the claim 4, further characterized in that the switches comprise proportional switches that mimic the proportional hydraulic lever actuators. 9. - The forklift in accordance with the claim 4, further characterized in that it comprises a diverter in a line connecting at least one of the pumps with one of the actuators, the diverter adapted to selectively connect said pump (at least one) to at least one towing actuator. 10. The forklift in accordance with claim 2, further characterized in that: the mast is pivotally mounted on the frame of the truck; and the forklift further comprises a sustained fork pivotably on the plate yoke, so that the mast is pivotally moved to the overlying relationship and the fork is pivotally moved separately to rest on a truck bed in the stowed position. 11. Fork lift according to claim 1, further characterized in that the mast is pivotally mounted on the frame of the truck, which further comprises a tool box mounted on a front end of the bed of the truck, the tool box having channels open through it, the channels receiving the mounting beam. 12. The forklift in accordance with claim 1, further characterized in that the mast is pivotally mounted on the frame of the truck, the fork lift further comprising a display mechanism that includes at least one of: a camera and a mirror, supported on at least one of: the truck, the mast and the fork, so that the operator located in a truck cabin observes the insertion of the fork. 13.- The forklift in accordance with the claim 12, further characterized in that: the display mechanism comprises at least one camera; and the forklift also comprises at least one monitor operatively connected to the camera (at least one); and the monitor displays the images captured by the camera (at least one) to be observed by an operator while sitting in the cabin and operating the truck to insert the fork. 14.- The forklift in accordance with the claim 13, further characterized in that it comprises a plurality of cameras including the camera (at least one), wherein at least one of the chambers of said plurality is mounted on the mast and at least one other camera of said plurality is mounted on the mast. the fork plate. 15.- The forklift in accordance with the claim 1, further characterized in that it comprises: a display mechanism that includes at least one camera supported on the fork plate and movable therewith; a monitor in a truck cabin; and a video cable that operatively connects the camera to the monitor, the video cable being supported at least in part by a spring-loaded cable reel that releases or retracts a portion of the video cable while compensating for cable slack when The fork plate and camera move and change the effective length required of the cable. 16. - The forklift according to claim 1, further characterized in that the mast is pivotally mounted on the frame of the truck, and a spare wheel hitch is connected to the truck frame directly or by means of the mounting beam. 17.- The forklift in accordance with the claim 1, further characterized in that the mounting beam is a first mounting beam of a plurality of similar mounting rails, and the mast is pivotally connected to each mounting beam of said plurality. 18. The forklift in accordance with claim 1, further characterized in that the mounting beam is a truck sill member. 19. A pallet car comprising: a pallet truck chassis; at least three wheels held in the chassis; a pen mounted snugly on the chassis; and an elevator attached to the chassis and the boom. 20. The pallet truck according to claim 19, further characterized in that it comprises a motor held in the chassis, the motor operatively connected to at least one of the wheels and to the elevator to selectively drive the carriage and drive the elevator. 21. The pallet truck according to claim 19, further characterized in that the chassis has a space between at least two of the wheels to receive a load in the space for coupling and lifting by means of the carriage. 22. The pallet truck according to claim 19, further characterized by comprising a fork suspended from the boom for coupling and holding a load to be lifted and transported by the pallet truck. 23. The pallet truck according to claim 19, further characterized in that at least one of the wheels is a steering wheel; the pallet car also comprising at least one steering actuator for steering the steering wheel. 24. A strut to support a mast and the forks of a forklift in a condition separate from a truck, the strut comprising: an elongated base; a vertical support supported on the elongated base; and at least one fork receiver extending longitudinally in at least partially overlying relation to the elongate base; wherein the fork receiver has at least one opening having a vertical height on a scale of about 5 centimeters to about 15 centimeters in a direction generally perpendicular to the elongate base. 25. The strut according to claim 24, further characterized in that the elongate base comprises a plurality of stringers having lengths on a scale of about 1.22 meters to about 3.66 m.; and the fork receiver comprises a plurality of tubular members for receiving each fork from the plurality of forks of the forklift, to support the forks and the mast separately from the truck. 26. - An adjustment bracket for adjustably supporting a forklift mast on at least one fixed mounting beam in a vehicle, the adjustment bracket comprising: at least one base of adjustment bracket, the base having a connecting mechanism which includes a plurality of attachment points; and a pivot connection piece, the pivot connection piece supported on the base. 27.- The adjustment bracket in accordance with the claim 26, further characterized in that the base is an elongated base; and the plurality of attachment points forms an elongate pattern that extends along at least a portion of the elongated base. 28.- The adjustment bracket in accordance with the claim 27, further characterized in that the elongated model comprises a pattern of repetition of the points. 29. The adjustment bracket according to claim 26, further characterized in that the attachment points comprise mounting holes. 30.- The adjustment bracket in accordance with the claim 26, further characterized in that the mounting holes comprise a plurality of bolt holes of different size to selectively receive a set of bolts corresponding to a particular predetermined height. 31.- The adjustment bracket according to claim 26, further characterized in that it comprises at least one flange that extends transversely to a plane of the base. 32.- The adjustment bracket in accordance with the claim 26, further characterized in that it comprises a pair of adjustment brackets including the adjustment bracket, the pair of adjustment brackets having respective bases having respective adjustment mechanisms, and respective pivot connection pieces held on the respective bases. 33.- An adjustable height fork lift pole for adjustable mounting on a mounting beam supported on a truck, the height adjustable fork lift mast comprising: at least one external part and at least one internal part supported movable on the external piece (at least one); and a joining mechanism comprising a plurality of attachment points on the external part (at least one), and disposed at least partially along the external part. 34.- The height adjustable fork lift mast according to claim 33, further characterized in that the plurality of attachment points comprises a model of mounting holes. 35. The height-adjustable fork lift mast according to claim 34, further characterized in that the plurality of attachment points comprises a plurality of different models of mounting holes. 36.- The height adjustable fork lift mast according to claim 35, further characterized in that the plurality of different models of mounting holes comprises mounting holes of a first model having different dimensions of the mounting holes of a second model. 37. The height adjustable fork lift mast according to claim 33, further characterized in that it comprises a pair of external parts that includes the external part (at least one); and a pair of internal parts that includes the internal part (at least one); wherein the joining mechanism comprises a pattern of coincidence of joining points in each external part. 38.- A forklift for adjustable height mounting on a truck, the forklift comprising: a pair of adjusting brackets that adjustably connect pivot connections of respective mounting beams to external parts respecfive of a forklift mast , the adjustment brackets having bracket attachment mechanisms in respective adjustment brackets, and wherein the mounting joists are adapted to be supported on a truck; and mast joining mechanisms on respective external parts of the mast; wherein one of the bracket attachment mechanisms and the mast attachment mechanisms have at least one attachment element, and the other of the bracket attachment mechanisms and the mast attachment mechanisms have a plurality of attachment elements; and the joining elements (at least one) of one of the joining mechanisms is removably attached to one of the joining elements of the plurality of joining elements of the other joining mechanisms. 39.- The forklift in accordance with the claim 38, further characterized in that the joining elements comprise a plurality of separate joining points, and at least one set of fasteners joining the respective points of attachment of the connecting brackets with the respective points of attachment of the outer parts of the mast . 40.- The fork lift according to claim 38, further characterized in that a first element of the plurality of the joining elements is centered in a spaced position of a second element of the plurality of joining elements; and the selective union of the joining element (at least one) with one of the first and second joining element, determines a position of height of the mast with respect to the mounting joists. 41.- The forklift according to claim 38, further characterized in that each joint bracket comprises a plurality of models of attachment points; and each external part of the mast comprises at least one model of attachment points that coincides with at least one of the models of the junction points in the joint brackets; wherein the plurality of models are spaced along an adjustment bracket. 42. The forklift according to claim 38, further characterized in that each joint bracket comprises at least one model of attachment points; and each outer part of the mast comprises a plurality of models of attachment points that coincide with the model (at least one) of the attachment points on each joint bracket; wherein the plurality of models are spaced along the external parts of the mast. 43.- A method to adjust the height of a mast and a fork of a truck-mounted fork lift, the method comprising: adjusting the position of a pivot connection from a mast to a mounting beam along the height of the mast, wherein the mounting beam is adapted to be supported on a truck; and removably connect the pivot connection to the mast. 44. The method according to claim 43, further characterized in that it comprises adjusting the position of a hydraulic ram connection of a mast along the mast; and removably connect the ram connection to the mast. 45. The method according to claim 43, further characterized in that the adjustment and joining steps comprise a preliminary height adjustment, to place the mast and the forks of a forklift truck mounted above ground level, the method also comprising finely adjusting the height of the forks above ground level by adjusting fork lift chain bolts. 46.- A method for selectively using a tool of a variety of joining tools, comprising: selecting a joining tool according to the operation to be executed or the task that is required; and joining the attachment tool to a carriage of a forklift. 47. The method according to claim 46, further comprising a preliminary step of joining the fork lift to a delivery truck, the method also comprising joining a propulsion mechanism held in the delivery truck to the tool Union. 48. The method according to claim 47, further characterized in that it comprises actuating the joining tool by means of a hydraulic pump. 49. The method according to claim 47, further characterized in that it comprises actuating the joining tool by means of a source of electrical energy sustained in the truck. 50.- The method according to claim 47, further characterized in that it comprises actuating at least one hydraulic motor in the joining tool. 51.- The method according to claim 47, further characterized in that it comprises actuating at least one hydraulic ram in the joining tool. 52.- The method according to claim 46, further characterized in that the joining tool is one of a plurality of joining tools, the selection step also comprising selecting the joining tool from among the plurality of joining tools. 53. The method according to claim 46, further characterized in that it comprises locking the carriage against inadvertent movement with respect to a fork lift mast. 54. The method according to claim 53, further characterized in that the locking step of the carriage comprises connecting a tension element to the carriage and to the mast. 55. The method according to claim 53, further characterized in that the locking step comprises raising the carriage after connecting a tension element to the carriage and the mas- pel. 56. The method according to claim 53, further characterized in that the locking step comprises securing at least one bolt coupled with at least one detent in a portion of the carriage frame, to prevent the movement of the carriage preventing movement of the carriage. at least one carriage roller, where the retainer (at least one) is of a size and shape complementary to the size and shape of the roller (at least one). The method according to claim 46, further characterized in that it comprises the preliminary steps of: rotating the forks of the forklift from a position of use; and insert the tips of the forks into cavities maintained in a delivery truck. 58.- A system for supporting a variety of joining tools in a forklift carriage, comprising: a top linkage element on the carriage; a lower joint element on the carriage; a locking lever on the carriage for fixedly coupling at least one tool of a variety of predetermined joining tools. 59.- The system according to claim 58, further characterized in that the forklift is mounted on a delivery truck, the system also comprising a propulsion mechanism maintained in the delivery truck to propel the joining tool. 60.- The system according to claim 59, further characterized in that the propulsion mechanism comprises a hydraulic pump. 61.- The system according to claim 59, further characterized in that the propulsion mechanism comprises a source of electrical energy. 62.- The system according to claim 59, further characterized in that the joining tool comprises at least one hydraulic motor. 63.- The system according to claim 59, further characterized in that the joining tool comprises a hydraulic ram. 64.- The system according to claim 59, further characterized in that it comprises at least one cavity maintained in the delivery truck to receive a tip of a fork, when said fork rotates from a position of use to a position stored during the application of one of the joining tools. 65.- A fork lift truck comprising: slidable or rolling mast coupling elements on a carriage frame, the mast coupling elements adapted to move along a fork lift mast; an upper element joined to the frame and having a top surface; a lower element joined to the frame and having a lower surface with an opening extending therethrough and opening externally through the lower surface; a bolt movably disposed within the carriage, the bolt extendable externally through the opening; a lever operatively connected to the bolt; the lever places the bolt in a retracted pin position within the carriage in a first lever position, and places the bolt in a prolonged position extending outwardly through the opening in a second lever position. 66.- A forklift carriage attachment assembly for receiving a variety of attachment tools when attached to a forklift truck, the carriage link assembly comprising: a top member adapted for connection to a member top of the forklift carriage, the upper element having a top surface; a lower member adapted for connection to the lower forklift carriage member, the lower member having a lower surface with an opening extending therethrough and opening externally through the lower surface; a bolt movably disposed within the joining assembly in an assembled state, the bolt being extendable externally through the opening; a lever operatively attached to the bolt, the lever places the bolt in a retracted pin position within the carriage in a first position, and places the bolt in a prolonged position extending outwardly through the opening in a second lever position, when the joint assembly is in its assembled state. 67.- The forklift truck assembly assembly according to claim 66, further characterized in that it comprises a joint tool holder forming an integral component comprising the upper element and the lower element. SUMMARY OF THE INVENTION A forklift for a truck may have at least one mounting beam for pivotally supporting a forklift mast on a truck frame; the forklift can be extended well below the level of the truck bed to allow the coupling of loader loads resting on the ground, by means of the forks of the forklift; the mast and fork of the forklift can be adjusted by removably attaching a pivot connection of the mounting beam to the mast at a selected position along the mast; the forklift can have a structure in a forklift carriage to selectively receive any tool from a variety of joining tools; alternatively, an assembly in the carriage can be secured and the assembly can provide the structure to selectively receive the joining tools; one method may include selectively securing any tool from a variety of joining tools, including, without limitation, a trencher, auger, backhoe, and hydraulic breaker; these joining tools can be connected to a hydraulic system for the control of the joining elements in the joining tool mast, which can be formed with one or more structures or attachment points; the pivot connection of the method can be attached directly to the mast or can be joined by means of a joint bracket having a bracket attachment mechanism, which can include the preliminary steps of locking the forklift against movement along of the mast, and insertion of the fork tips into cavities maintained in the truck or one or more joint elements similar to those of the mast, for mutual union at a desired height. 5B P06 / 1481