JPS63230496A - Transporter for construction work - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a construction transport device used for transporting construction materials, assembling beam forms, etc.
In particular, the present invention relates to a transportation device in which a cargo receiving means is provided on an elevating frame that stands upright on a traveling truck.

"Prior Art" Conventionally, this type of transportation device includes a forklift. The forklift has a fork that is movable up and down on a mast (elevating frame) installed on a traveling truck, and is usually carried by inserting the fork into a pallet loaded with cargo and lifting it slightly. It has become. - By the way, at construction sites, etc., in addition to transporting and lifting loads using the forklift, work may be required to install beam forms. In such cases, the current method is to disassemble the beam formwork, install scaffolding, and assemble it manually, which requires a great deal of labor and is inefficient. In addition, in the case of long beam formwork, after assembling it on the ground,
The crane is restrained while the crane sets the beam formwork, such as lifting it with a crane and setting the beam formwork on the column formwork.

In addition, in the case of steel-framed reinforced concrete construction, crane work is difficult because the steel beams get in the way. Also, sometimes a forklift is used to install the beam formwork, but in this case, the width of the fork is narrow and it is not suitable for lifting long objects.

``Problems to be Solved by the Invention-1'' However, in the work of setting beam forms using the aforementioned forklift, the following problems remain to be solved.

■ Because forklifts can only move forward and backward and steer left and right, it is difficult to move them from the ground assembly site to just below the set point, and especially when it comes to long objects such as beam forms, it is difficult to swing them around during operation. There is also the problem that it takes time to switch and drive when moving.

■ When setting the beam formwork, the traveling trolley is fixed using a fixed outrigger, and the beam formwork is loaded directly onto the fork, so the beam formwork can be rotated back and forth, left and right, and slightly moved while still being lifted. 1) It is not possible to make fine adjustments to the formwork.

■ The above-mentioned forklifts are required to be stable when lifting or transporting loads, so it is desirable that the forklifts have a wide width.
Since the aircraft requires going up and down using an elevator, the width of the aircraft is limited.

The present invention has been made in view of the above-mentioned problems, and its purpose is to improve the maneuverability and make fine adjustments to the beam formwork, etc., and to sufficiently ensure the safety thereof. The object of the present invention is to provide a transport device for construction work that has improved applicability to work at construction sites and the like.

``Means for Solving the Problem'' Therefore, the present invention provides a transportation device in which an elevating frame is installed upright on a traveling cart, and a load receiving means is provided on the elevating frame, and the elevating frame is provided with a load receiving means. A running wheel is rotatably supported in a horizontal plane via a rotating shaft at the front and rear of the frame, and a switching mechanism that switches the direction of the running wheel in the front-rear direction of the traveling truck and in the left-right direction perpendicular to the front-rear direction. and an outrigger that is removably or foldably installed on both the left and right sides of the vehicle body frame and has a flexible wheel attached to its tip, and the direction of the running wheel can be switched between front, rear, left, right, and right angles by a switching mechanism. ,
In addition to running forward and backward, steering left and right, it was also able to run at right angles, but by attaching outriggers with adjustable wheels, it ensured stability while making fine adjustments when lifting a load possible.

Here, the load receiving means includes a carrier disposed so as to be movable downwardly along the elevating frame of the traveling truck, a pair of fork claws that are detachably attached to the carrier and on which the load is placed, and the fork claws. pallets placed on the
If the sliding member is interposed between the fork pawl and the pallet and reduces friction between the pallet and the fork pawl, the fork pawl can be replaced with one of an appropriate size. This is preferable because its stability can be ensured depending on the size of the pallet, and the sliding member allows the pallet co-load to be easily moved and adjusted.

In addition, the load receiving means is connected to a carrier disposed so as to be movable downwardly along the elevating frame of the traveling truck, a pair of fork claws on which the load is placed, and the fork claws of the carrier, and the fork claws are connected to each other. By adjusting the degree of opening and closing of the fork claws using the link mechanism, the stability of the load can be ensured, and the fork claws and the load can be moved horizontally. This is preferable because it allows for fine adjustment.

"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 to 9.

In these figures, reference numeral 1 is a traveling trolley, reference numeral 2 is an elevating frame erected upright on the traveling trolley 1, and reference numeral 3 is a cargo receiving means attached to the elevating frame 2. It constitutes the main component of the transport device.

To explain these main members in detail, the traveling bogie 1 has a main body frame 1b that supports an elevating frame 2 on its rectangular body frame Ia, and the main body frame 1b
Inside is a built-in power unit that includes a battery, motor, hydraulic pump, flow rate adjustment valve, hydraulic switching valve, hydraulic jack for lifting, operation panel, etc.

A pair of running wheels 4 is rotatably supported in a horizontal plane via a rotating shaft 4a at the front and rear of the vehicle body frame 1a, respectively. A hydraulic motor 4b for driving the running wheel is attached to one of the running wheels 4 located at the inner front and rear of each of these running wheels 4, and the running wheel 4 is driven by the driving force of the hydraulic motor 4b. It has become. The hydraulic motor 4b that drives the running wheels 4 is controlled by a switching valve and a flow control valve in the power unit, and these controls cause the running truck 1 to move backward and change its speed. .

Further, the vehicle body frame 1a is provided with a device that switches the orientation of running wheels (front wheels and rear wheels) 4 located at the front and rear portions of the vehicle body frame Ia to the front-rear direction (vertical direction in FIG. 3) and the left-right direction of the traveling bogie I, respectively. A switching mechanism 5 is provided.

This switching mechanism 5 includes a screw shaft 6 that extends in the front-rear direction of the vehicle body frame 1a and has screw portions 6a and 6b formed in different directions in the front and rear, and each screw portion 6a of the screw shaft 6,
6b, a rod 8 connecting the cylinder 7 and each running wheel 4, and a driving means 9 for rotationally driving the threaded shaft 6, and A rod 8 is connected to the front and rear eccentric positions of the rotating shaft 4a of the running wheel 4, respectively, and as the cylinder body 7 moves back and forth, the running wheel 4 is directed in the front-back and left-right directions via the rod 8. Each can be switched by 90°.

The screw shaft 6 is supported by the vehicle body frame 1a via a bearing 6c, and the drive means 9 for rotating the screw shaft 6 is arranged at right angles as shown in FIGS. 3 to 5. Steering handle 9a and this right angle steering handle 9
It is composed of a driving sprocket (t-9c) integrated with the rotating shaft 9b of a, a driven sprocket 9d integrated with the screw shaft 6, and a chain 9e connecting these two sprockets t-9c, 9d.

In addition, in the present invention, the configuration of the switching mechanism 5 is not limited to the illustrated example; for example, the configuration of the switching mechanism 5 is
Instead, a hydraulic jack may be integrated with the cylindrical body 7, and the cylindrical body 7 may be moved back and forth by the operation of the hydraulic jack.

On the other hand, as shown in FIG. The basic structure is to move the rear running wheels 4 in the same direction to steer the running bogie 1. That is, the steering means IO includes a steering handle 11 and a steering plate 1 attached to the lower end of the steering handle 11 and rotatably provided on the cylinder 7 of the switching mechanism 5 via a support shaft 12a. -12, and has a structure in which a rod 8 connected to the running wheels 4 is connected to the steering plate 12.

Next, the cargo receiving means 3 provided on the elevating frame 2 will be explained. As shown in FIGS. carrier 15 and this carrier 15
A pair of fork claws 17 are removably attached to the front surface of the housing via a support rod I6 and on which a load is placed, a pallet 8 is placed on the fork claws 17, and a space between the fork claws 17 and the pallet 18 is Interposed pallet 18
sliding member 1 that reduces friction between the fork pawl 17 and the fork pawl 17;
It consists of 9.

The fork pawl 17 is supported on the support rod 16 by a pin 20, and is designed to be easily attached and removed by attaching and detaching the pin 20.

Further, the pallet 18 and the sliding member 19 have a structure as shown in FIGS. 6 to 8. That is, the pallet 18 is formed into a flat rectangular box shape, and an insertion hole +8a into which the fork claw 17 is inserted is formed on the side surface, and a load on the pallet 18 (beam formwork A in the illustrated example) is formed on both sides of the upper surface. A positioning pin 18b for positioning is inserted.

On the other hand, in the illustrated example, the sliding member 19 is made of a low-friction sliding material (
For example, the product name Tumalight, Tumasheet, etc.) is applied,
It is disposed on the upper inner surface of the insertion hole 18a of the pallet I8.

As the sliding member I9, for example, as shown in FIG. 9 and FIG. 1O, a structure in which a bearing +9b is disposed on the surface of a main body plate +9a can also be applied.

Further, reference numeral 25 in the figure is an outrigger for ensuring the stability of the traveling bogie 1, and is detachably attached to the front part of the vehicle body frame 1a via a pin 26. A flexible wheel 27 is attached to the tip of the outrigger 25 so that it can follow the forward and backward movement of the traveling truck 1 and the movement in the left and right directions. In addition,
Instead of making the outrigger 25 removable from the traveling truck I, it may be constructed in a foldable manner. In this case, the outrigger 25 can be extended or shortened with the outrigger 25 attached. You can change the width of the machine. Further, the mounting position of the outrigger 25 is not limited to the front part.

Next, the operation of the conveying device of the embodiment configured as above will be explained according to the procedure for setting the beam formwork A.

To set beam formwork A using this transport device,
First, as shown in FIG.
5 are attached respectively, and as shown in FIG. Then, the traveling cart 1 is operated to transport the beam formwork A on the pallet 18 to just below the set position.

When moving the traveling trolley 1, it is sufficient to operate the hydraulic motor 4b attached to the traveling wheels 4, and its speed is adjusted by a hydraulic flow rate adjustment valve, so it can start and stop at infinite speed. Since it is possible to run at very low speeds, it is possible to improve the operability during running. In addition, since the traveling trolley 1 is supported by outriggers 25 equipped with flexible wheels 27 when traveling, its stability is maintained even when a long object such as the beam formwork A is loaded. This can be ensured sufficiently and safety can be improved.

In addition, when the traveling carriage 1 is to be steered left and right when transferring the beam formwork A, the steering handle II may be moved to one side. By this operation, the steering plate 12 fixed to the steering handle II rotates the rotating shaft fixed to the rear wheel side cylinder 7 around +2a, and the rear running wheel 4 are turned in the same direction, and the traveling trolley 1 is steered.

For example, as shown in FIG. 4, when steering the traveling trolley l to the right, if the steering handle 11 is moved to the left,
The rotation of the steering plate 12 pulls the rod 8 on the left side and pushes the rod 8 on the right side, causing the rear running wheels 4 to turn to the left, and the carriage 1 to steer to the right.

In addition, when it is necessary to steer the traveling trolley 1 at right angles, as shown in FIG.
Rotate. By this operation, the drive sprocket 9c
The screw shaft 6 rotates through the chain 9e, and due to this rotation, the front and rear cylinders 7 are drawn to the center,
The front and rear running wheels 4 change direction in the right angle direction via the rod 8.

If the hydraulic motor 4b is driven in this state, the traveling trolley 1 will move at right angles along the machine width direction.

Therefore, in the transportation device of the embodiment, the traveling trolley l
In addition to forward and backward movement and left and right steering, it is also possible to achieve right-angle steering of the traveling truck, eliminating the need for back-and-forth driving as with conventional forklifts, and allowing the truck to accurately move to a specified position in a short period of time. The trolley 1 can be moved and moved closer.

By the above-mentioned operation, when the traveling cart I is transferred and moved to just below the setting position of the beam form, the carrier 15 constituting the cargo receiving means 3 is raised to lift the beam form A.

At this time, the beam formwork A is stabilized during loading by the wide fork claws 7 that match the size of the beam formwork A, and the carrier 15 can also be shifted steplessly by the hydraulic flow rate adjustment valve, so it can be carried out safely. It is possible to lift.

After lifting beam formwork A, set it on the column formwork and lift beam formwork A.
The assembly work has been completed. At the time of setting, if you want to make a large adjustment to the beam formwork A, do so by moving the traveling trolley 1 forward and backward, left and right, and at right angles.For small adjustments to the beam formwork A, for example, manually adjust both ends of the beam formwork A. Push/pull, fork claw 1
The pallet 18 on the pallet 7 may be slid to align the pallet 18. This operation causes the sliding member 1 between the fork pawl 17 and the pallet 18 to reduce the friction between them.
9, it can be easily carried out manually by sawing, and the workability can be improved.

In addition, when moving only the transport device due to a change in the work place or when rearranging, use the fork claw I7.
, the outriggers 25 are removed, the width of the machine is reduced, and the machine is allowed to run on the floor by itself. Therefore, it becomes possible to run in narrow spaces and to load onto an elevator or the like.

Next, referring to FIGS. 12 to 18, another example of the cargo receiving means 15 and the means 3 will be explained. The main components are a carrier 30, a pair of fork claws 31 on which a load is placed, and a link mechanism 32 that connects the carrier 30 and the fork claws 31 and opens and closes the fork claws 31 in parallel in a horizontally movable state. has been done.

The carrier 30 is provided with a support plate part 30b that fits between the lifting frames 2 on the back surface of the main body part 30a that supports the fork claws 31 and the link mechanism 32, and a guide roller on the outer surface of the support plate part 30b. 30c is attached.

Further, an opening 30d that communicates with the front and back is formed in the center of the main body 30a of the carrier 30, and a locking mechanism that fixes the link mechanism 32 to the opening 30d and restrains the movement of the fork pawl 31. 33 are provided.

This lock mechanism 33 is connected to the arm 51 of the link mechanism 32.
52, a hook 33c fitted into the fitting hole 33b of the bracket 33a, and an operating lever 33 for operating the hook 33C.
By fitting the hook 33c to the fixing bracket 33a, the movement of the arm is regulated and the movement of the fork pawl 31 is restrained.

The fork claw 31 is used to place a load on it, and usually a pallet or the like is inserted thereinto to load the pallet together with the load.

The link mechanism 32 connecting the fork pawl 31 and the carrier ~30 includes a first link mechanism 35 that moves the fork pawl 31 in the horizontal direction, and a second link mechanism 36 that opens and closes the fork pawl 3I in parallel. It is constituted as a subject.

The first link mechanism 35 is connected to the main body f! of the carrier 30.
f's 30 a A pair of upper and lower arms 41 pin-coupled via a rotation shaft 40 at both ends, and a pair of upper and lower arms 41 pin-coupled via a rotation shaft 42 to the tips of the arms 41 and the fork claw 3.
1, and the free claw 31 is rotatably supported on the L-shaped link 43 via a rotating shaft 44.

The second link mechanism 36 that opens and closes the fork claws 31 in parallel is mainly composed of arms 51 and 52 whose central portions are hinged to be vertically rotatable by a hinge pin 5o, and each arm 51, 52 is Both ends of the inside of the fork claw 31? It has a hinged structure.

Note that the left and right arms 51, 52 are restricted from rotating downward by regulating pieces 51a formed on their hinges, and when the fork claws 31 are closed, as shown in FIG. 16, etc. ” It has a structure that can be folded in two directions.

In addition, when the cargo receiving means 3 is configured as described above,
If the lock mechanism 33 is removed, the first and second link mechanisms 35.
36 is released, and the fork pawl 3I is released from the first link mechanism 3.
Since the fork claw 3I can be freely rotated around the rotation axis 44 of No. 5, as shown in FIG. You can make fine adjustments to it.

In addition, when storing, etc., the arms 51 and 52 of the second link mechanism 36 can be folded to reduce the width of the machine for transport, so that it can easily pass through narrow spaces.

Further, FIGS. 19 to 22 show still another example of the cargo receiving means 3, in which the configuration of the second link mechanism 36 is changed. In other words, the left and right arms 51 and 52 located between the fork claws 31 are hinged together via the vertically extending rotation shaft 6o, and these arms 5
1. The free end of 52 is connected to a rotation axis 61 parallel to the rotation axis 60.
Each arm 5 is hinged to the fork pawl 31 through
1.52 are connected rotatably in a horizontal plane and can be folded laterally.

In addition, in this example, as shown in FIG. 21,
The left and right arms 51 and 52 are connected by a restraining arm 65,
Its lateral movement can be restricted.

Note that even with such a configuration, the same effects as described above can be achieved.

"Effects of the Invention" As explained below, the present invention provides the following excellent effects.

■ A running bogie is rotatably supported in a horizontal plane via rotating shafts at the front and rear of the vehicle body frame, and the running wheels are oriented in the longitudinal direction of the bogie and in the left and right directions perpendicular to the longitudinal direction. The structure is equipped with a switching mechanism that switches between each, and outriggers that are removably or foldably installed on both the left and right sides of the vehicle body frame and have swivel wheels attached to their tips, ensuring stability during lifting. In addition to normal forward-backward and left-right travel, it is also possible to perform right-angle steering across the width of the aircraft, improving its maneuverability. Therefore, with long beam formwork loaded,
When transporting the main body from the assembly position to just below the setting position, or when loading and unloading the main body onto a lifting scaffold, elevator, etc. in a narrow space, there is no need to switch and travel, and the movement width can be accurately moved to a predetermined position in a short time.

In addition, there is no need to remove the outriggers every time you drive or lift a load, improving work efficiency.
Moreover, it is possible to achieve stable running when moving long objects, thereby improving safety.

Furthermore, by removing or folding the outriggers, the width of the machine can be made smaller, allowing passage through narrow spaces and entering elevators, thereby improving applicability in construction workplaces.

■ The cargo receiving means includes a carrier disposed so as to be movable up and down along an elevating frame, a pair of fork claws detachably attached to the carrier and on which a load is placed, and a pallet placed on the fork claws. When the sliding member is interposed between the fork claw and the pallet and reduces friction between the pallet and the fork claw, the size of the fork claw can be appropriately selected. Not only can the stability of the load be ensured depending on the size of the load, but when the main body is relocated, the fork claws can be removed to make it easier to pass through narrow spaces and load onto elevators, etc. In addition, the sliding member allows the pallet co-load to be easily moved and finely adjusted.

(i) The cargo receiving means is connected to a carrier that is arranged to be vertically movable along the elevating frame of the traveling truck, a pair of fork claws on which the load is placed, and the carrier and the fork claws are connected, and the fork claws are moved horizontally. When configured with a link mechanism that opens and closes in parallel when possible, the degree of opening and closing of the fork pawl can be easily adjusted by the link mechanism, and fine adjustment thereof can also be easily performed.

[Brief explanation of the drawing]

1 to 9 show an embodiment of the present invention,
Fig. 1 is a perspective view of the transport device for construction work, Fig. 2 is a front view showing the switching mechanism, Figs. 3 to 5 are plan views shown to explain the functions, and Fig. 6 is the cargo receiving means. 7 is a side view thereof, FIG. 8 is a plan view thereof, FIG. 9 is a perspective view showing the beam form placed on the pallet of the cargo receiving means, and FIGS. 10 and 11. 10 shows another example of the sliding member constituting the cargo receiving means, and FIG. 10 is a front view;
FIG. 11 is a side view, FIGS. 12 to 18 show other examples of the cargo receiving means, FIG. 12 is a perspective view, and FIG.
The figure is a plan view, FIG. 14 is a side view, FIG. 15 is a front view, FIG. 16 is a front view with the fork claw closed, FIG. 17 is a plan view, and FIG. 18 is a fork. Plan view showing the state in which the claws are moved horizontally, Figures 19 to 2
Fig. 2 shows yet another example of the cargo receiving means, Fig. 19 is a plan view, Fig. 20 is a front view thereof, Fig. 21 is a plan view showing the fork claw in a closed state, and Fig. 22 is its plan view. It is a front view. 1...Traveling trolley, 1a...Vehicle frame,
2... Lifting frame, 3... Load receiving means, 4
...... Running wheel, 5... Switching mechanism, 6...
...Screw shaft, 7...Cylinder, 8...
Rod, 9... Drive means, IO... Steering means, 11... Steering handle, I2...
・Steering plate, 15...Carrier, 17・
...Fork claw, 18...Pallet, 1
9...Sliding member, 25...Outrigger 12
7...Flexible wheel, 31...Fork pawl, 32...Link mechanism, 35...First
Link mechanism, 36...Second link mechanism, 51.52...Arm.

Claims (1)

[Scope of Claims] 1) A transportation device in which an elevating frame is installed upright on a traveling bogie, and the elevating frame is provided with a load receiving means, and the traveling bogie has rotating shafts at the front and rear of the vehicle body frame, respectively. A running wheel rotatably supported in a horizontal plane via the
A switching mechanism that switches the direction of the running wheels in the front-rear direction of the running truck and in the left-right direction perpendicular to the front-rear direction, and an outrigger that is removably or foldably provided on both left and right sides of the vehicle body frame and has a flexible wheel attached to its tip. A transportation device for construction work, characterized by comprising: 2) The load receiving means includes a carrier disposed so as to be movable up and down along the elevating frame of the traveling truck, a pair of fork pawls that are detachably attached to the carrier and on which the load is placed, and a pair of fork pawls that are placed on the fork pawls. Claim 1, characterized in that the pallet comprises a pallet, and a sliding member interposed between the fork pawl and the pallet to reduce friction between the pallet and the fork pawl. Transportation equipment for construction work described in . 3) The load receiving means connects a carrier disposed to be vertically movable along the elevating frame of the traveling truck, a pair of fork claws on which the load is placed, and connects the carrier and the fork claws, and horizontally moves the fork claws. The construction transport device according to claim 1, further comprising a link mechanism that opens and closes in parallel in a movable state.