JP2010047416A - On-vehicle crane device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crane device mountable/demountable on/from a truck loading space. <P>SOLUTION: An inner cylinder and an outer cylinder turnably covering the inner cylinder form a main cylinder. A means is provided on a properly shaped base for fixing the inner cylinder and for fixing/unfixing the outer cylinder to/from the inner cylinder. On the other hand, a movable body with a hollow body is provided onto the upper part of which an arm is fixed, and a link mechanism with a link plate is provided between the main cylinder and the movable body. Thus, the movable body is moved relative to the main cylinder so that the position of the movable body can be selected to face the main cylinder or to be right thereover. Pulleys are journaled to proper sites on the main cylinder, the movable body and the arm, a wire is set between the pulleys, and a winch is provided at a proper site for winding the wire. Thus, the movable body can be moved with the drive of the winch and the wire is wound. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an in-vehicle crane apparatus that is used by being mounted on a loading platform such as a truck.

  Conventionally, although there is a crane apparatus integrally mounted on a truck, as shown in the present invention, a crane apparatus that is detachably mounted on a truck bed is not found at present.

Conventional truck-equipped crane vehicles are mainly classified into large types used at construction sites and small types mainly used for loads loaded on trucks. The former is for cranes only, but it can not be used for purposes other than cranes although it has a wide weight range. The latter is also known as the unic, and is equipped with a crane between the loading platform and the driver's seat so that luggage can be loaded on the loading platform.
However, any of the above types is expensive because the crane portion is integrally mounted on the truck, and the unic vehicle requires a large area because of the crane portion.
An object of the present invention is to provide a new and useful crane device of a type that can be mounted on a loading platform of a general truck and can be removed from the loading platform when not in use, unlike the conventional crane vehicles as described above. Thus, it is possible to selectively use a general truck and a truck with a crane device, and provide an on-vehicle crane device that can be obtained at a relatively low cost.

The present invention has the following configuration as means for solving the problems.
That is, the outer cylinder that is rotatably covered with respect to the inner cylinder and the inner cylinder is provided, the main cylinder is formed as described above, the inner cylinder is fixed on a base having an appropriate shape, and the outer cylinder with respect to the inner cylinder is fixed. On the other hand, a movable body made of a hollow body with an arm fixed on the upper part thereof is provided, and a movable body is moved relative to the main cylinder by providing a link mechanism using a link plate between the main cylinder and the movable body. In the above, it is possible to select the position of the movable body facing the main cylinder and the position directly above, and while supporting the pulleys at appropriate positions of the main cylinder, the movable body and the arm, a wire is stretched between the pulleys. By providing a winch for winding the wire in place, the movable body can be moved by driving the winch and the wire can be wound. The present invention is an in-vehicle crane device having the above-described configuration. A movable body stopper for locking the movable body may be provided on the upper part of the main cylinder, and a hook stopper for preventing the movement of the hook may be provided at the end of the arm.

The present invention has the following effects.
1. Since it is detachable from the truck bed, it can be removed and used as a normal truck.
2. Since the movable body is moved to a position directly above the main cylinder by winch drive, it can be stored compactly when not in use.
3. The overall structure is simple and can be manufactured relatively inexpensively.
4). By adding a hydraulic cylinder, the movable range can be expanded.

Hereinafter, embodiments of the present invention will be described.
In the figure, reference numeral 1 denotes a base plate, and through holes are formed in the vicinity of the four corners. Reference numeral 2 denotes a base, in which a reinforcing plate is fixed in quadrants on the side surface of the metal cylinder, and a fixed plate 3 made of a perforated small plate is fixed in quadrants around the upper surface of the cylinder. The base is fixedly installed on the base plate. 4 is a main cylinder.
As shown in FIG. 4, the main cylinder is composed of an inner cylinder 5 and an outer cylinder 6.
An annular body 7 is fixed to the lower part of the inner cylinder, and a bearing 8 is fitted therein. An outer cylinder 6 having a step portion is inserted into this bearing. The bearing 9 is similarly inserted in the upper part of the inner cylinder. In addition, a perforated rotating plate 10 is fixed to the lower part of the outer cylinder in a four-way arrangement. The lower part of the inner cylinder is fixed to the upper part of the base. Therefore, the outer cylinder is rotatable with respect to the base, and by this rotation, the fixed plate and the rotating plate can be overlapped vertically, and at this time, the holes of each other coincide, and the pin 11 is inserted here. In particular, the outer cylinder is fixed.
Reference numeral 12 denotes a main cylinder lower pulley, which is rotatably provided on a shaft installed in the lower part of the inner cylinder. In addition, the lower part of the inner cylinder is cut off. A main cylinder upper pulley 13 is pivotally supported by an appropriate support member fixed to the upper part of the inner cylinder. Reference numeral 14 denotes a support plate, which is a substantially L-shaped plate body, and is a pair of plate bodies fixed to the upper side surface of the outer cylinder. The movable body stopper 16 is fixed substantially horizontally.
Reference numeral 20 denotes a movable body made of a hollow rectangular body. One end of a pair of lower link plates 21 is provided on the lower side surface of the movable body so as to be rotatable by an appropriate support member including a shaft. Be supported. Similarly, a pair of upper link plates 22 is also provided on the upper portion of the movable body, and one end of the upper link plate is pivotally supported on the support shaft of the support plate. A swash plate 23 is fixed to the lower surface of the movable body.

Reference numeral 24 denotes a grip bar made of a round bar protruding from the lower side surface of the movable body.
From the above configuration, the movable body can move with the movement of each link plate, and the position shown in FIG. 2 and the position shown in FIG. 6 can be selected. In the position of FIG. 6, the lower surface of the swash plate abuts on the end of the support plate, and the movable body is positioned in a straight line above the main cylinder. A lock plate 25 is a pair of substantially L-shaped plates, and a part of the lock plate is rotatably attached to the support shaft 15. One end of the lock plate is formed obliquely, and a cut portion 26 is formed in the vicinity thereof.
Reference numeral 30 denotes an arm made of a hollow rectangular body, and the lower surface near one end thereof is fixed to the upper end of the movable body.
This arm incorporates a hollow horn of an appropriate size inside and can freely enter and exit.
A pulley 31 is pivotally supported at the end of the arm as shown in FIG. 32 is a hook stopper made of an L-shaped plate, and a hole is formed below the hook stopper, and is fixed to the lower surface of the arm tip near the pulley. 33 is a pulley pivotally supported on the lower surface of the arm, 34 is a pulley pivotally supported on the lower inner surface of the movable body, 35 is a wire stretched between the pulleys, 36 is a hook provided at the end of the wire, and 37 is a commercially available electric motor. A winch box 38 having a built-in winch is a table fixed on the base plate. A plurality of through holes are formed in the outer arm and the upper surface of the inner arm, respectively, and one end of the outer arm is closed. Electric power is supplied to the winch through a cable (not shown).

In order to use the present invention, first, a base and a main cylinder are mounted on a base plate.
This attachment may be fixed or bolted. At this time, the outer cylinder is attached to the inner cylinder in advance using a bearing. Mount the stand and winch box at appropriate positions on the base plate.
A lower link plate is pivotally supported between the support member at the lower part of the outer cylinder and the support member at the lower part of the movable body, and the upper link plate is pivotally supported between the support shaft 15 and the upper support member of the movable body. A lock plate is also supported on this support shaft.
A wire is stretched between the pulleys, one end of which is connected to the winch in the winch box, and the other end is connected to the hook through the hole of the hook stopper. At this time, the lower end of the movable body is in contact with the upper surface of the table. The base plate provided with each of these parts is attached to an appropriate place of the truck bed using holes provided in the base plate.
When used, it starts from the initial state as shown in FIG. First, when the winch is driven, the wire is about to be wound up, and the pulley 34 tries to approach the pulley 13, but the link plate is pivotally positioned and the hook position is limited by the hook stopper. The movable body starts to move and eventually enters the state shown in FIG. At this time, the lower surface of the swash plate comes into contact with the end of the movable body stopper, and the movable body is positioned immediately above the main cylinder. Next, the lock plate is rotated, and the excision part is locked to the shaft through which the lower link plate is inserted, whereby the movable body position is locked.
Then, the hollow body inside the arm is pulled out, and a pin is inserted into each through hole to set the arm length. Moreover, the rotation position of the movable body with respect to the main cylinder is set by selecting the rotation plate at the bottom of the main cylinder and the fixed plate of the base and inserting the pin 11 into the overlapping hole.
By rotating the winch backward, the wire loosens and the hook begins to descend.
Stop the winch at the appropriate position, hang the load on the hook, wind up the wire again by driving the winch, lift the load, pull out the pin, shorten the arm length, loosen the wire and loosen the load on the truck bed And remove it from the hook to complete loading.
Thereafter, the packages can be loaded one after another by repeating the above operations. The loading / unloading position can be changed by rotating the movable body and changing the arm position / angle as necessary. After use, the movable body and the arm can be returned to the initial position and stored in a compact manner in the reverse procedure as described above.

FIG. 8 shows a variation of the present invention. The previous example was formed by fixing an arm to a movable body. However, in this example, a plate body is provided for each of the movable body and the arm, and the movable body and the arm are supported. A hydraulic cylinder is provided between the arms, and the angle of the arm with respect to the movable body is variable, and the effect of expanding the lifting range of the load can be obtained.
Although the present invention has been described above, the present invention has various features such that it can be used by being mounted on a truck bed, and can be easily removed, and can be provided at a low cost because it is relatively simple. Moreover, since the movable body position is variable with respect to the main cylinder, it can be stored compactly when not in use. Since the grip bar is provided on the movable body, the initial movement of the movable body can be facilitated by grasping and pressing the movable body when the movable body is returned to the initial position after use. Also, the movement end point position of the movable body is determined by the swash plate coming into contact with the movable body stopper, so that the movable body can be prevented from excessive movement, and the lower surface of the swash plate rides on the movable body stopper and stops. The impact due to pressing can be reduced.
Note that the end of the lock plate is formed obliquely, and the movable body is naturally locked by the weight of the lock plate by causing the oblique portion to abut the shaft by corresponding to the movable body moving position. be able to. Alternatively, the above effect may be exhibited by appropriately providing a stopper to restrict the movable range of the lock plate. It should be noted that the above-described example is an example of implementation and may have other approximate configurations. As described above, a vehicle-mounted crane device that can obtain various effects according to the present invention can be obtained.

  Plan view of the present invention   Front view of the present invention   Left side view of the present invention   Configuration explanatory diagram of the main tube of the present invention   AA expanded sectional view (partially omitted)   Main part explanatory drawing of this invention   Front view of the present invention (after moving a movable body)   Front view of modified example of the present invention (after moving movable body)   Main part explanatory drawing of this invention   Illustration of use of the present invention

Explanation of symbols

1 Base plate 2 Base 3 Fixed plate 4 Main tube 5 Inner tube 6 Outer tube 7 Ring 8 Bearing 9 Bearing 10 Rotating plate 11 Pin 12 Main tube lower pulley 13 Main tube upper pulley 14 Support plate 15 Support shaft 16 Movable body Stopper 20 Movable body 21 Lower link plate 22 Upper link plate 23 Swash plate 24 Grip bar 25 Lock plate 26 Cutting part 30 Arm 31 Pulley 32 Hook stopper 33 Pulley 34 Pulley 35 Wire 36 Hook 37 Winch box 38 Stand 39 Hydraulic cylinder

Claims (2)

An inner cylinder and an outer cylinder that is rotatably covered with respect to the inner cylinder are provided, the main cylinder is formed as described above, the inner cylinder is fixed on a base having an appropriate shape, and the outer cylinder is fixed to the inner cylinder. By providing a non-fixing means and a movable body with a hollow body with an arm fixed on the upper part, and by providing a link mechanism with a link plate between the main cylinder and the movable body, the movable body moves with respect to the main cylinder. It is possible to select the position of the movable body facing the main cylinder and the position directly above, and the pulleys are pivotally supported at appropriate positions of the main cylinder, movable body and arm, and wires are stretched between the pulleys. A vehicle-mounted crane device characterized in that a winch for winding a wire is provided at an appropriate position so that the movable body can be moved by driving the winch and the wire can be wound. The in-vehicle crane device according to claim 1, wherein a movable body stopper for locking the movable body is provided on the upper portion of the main cylinder, and a hook stopper for preventing hook movement is provided at the tip of the arm.

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