JPH0450189Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a loading platform tilting device for a single-vehicle transport vehicle among vehicle transport vehicles.

(Prior art) In a conventional single-vehicle transport vehicle, as shown in FIG. A floor 2 is placed movably, the movable floor 2 is moved rearward, its rear half is tilted downward, and its rear end is placed on the ground 3.
After loading the carrier vehicle 5 onto the movable floor 2 via the road plate 4 which is rotatably connected to the rear end of the movable floor 2, the movable floor 2 is moved forward and the vehicle 5 is placed on the movable floor 2. After the movable bed 2 was leveled and fixed at a predetermined position, the carrier vehicle 5 was tightened, and then the road board 4 was manually operated and rotated upward to close it.

(Problems to be Solved by the Present Invention) Generally, as mentioned above, in single-vehicle transport vehicles, the loaded transport vehicle is set horizontally, so the vehicle length of the vehicle transport vehicle is Because it is long and cannot turn around easily, it is not only difficult to drive on narrow roads, but depending on the size of the transport vehicle, it may protrude from the rear of the loading platform, making it difficult to load the transport vehicle from a legal and safe operation standpoint. There was a problem that there were cases where this was not possible.

Furthermore, since the moving operation of the movable bed and the opening/closing operation of the road board were performed separately, there was a problem that the operations were troublesome.

Therefore, the present invention was developed in view of the problems of the conventional methods mentioned above.
By raising the front end of the moving bed and lowering the rear end, the moving bed is tilted and fixed, allowing the vehicle to be loaded compactly, shortening the vehicle length of the vehicle transport vehicle, and reducing the length of the vehicle on narrow roads. To provide a loading platform tilting device that can be easily moved even by large vehicles, can be loaded even by large transport vehicles, and can open and close the road board at the same time by simply moving the moving floor. It is something.

(Means for solving the problem) Therefore, in the present invention, the base end of the lift arm is rotatably attached to the top surface of both left and right sides near the front end of the fixed bed, and the tip of the lift arm is attached near the front end of the movable bed. A hydraulic cylinder is provided between the lift arm and the fixed floor as a rotating means for rotating the lift arm, and is rotatably mounted on the lower surface of both left and right sides of the lift arm of the fixed floor. One end of the road board opening/closing wire is attached to the rear of the pivot point of the road board, the other end of the road board opening/closing wire is attached to the road board, and the intermediate part of the road board opening/closing wire is passed between the left and right lift arms. The intended purpose is achieved by constructing a structure in which the road board can be opened and closed by rotating the lift arm via a connecting rod provided therein.

(Function) With the loading platform tilting device configured as described above,
When the lift arm is tilted back and the movable floor is moving to the rear of the cargo platform, the movable floor slopes downward with a relatively gentle slope, and a rotatable pivot is attached to the rear end of the movable bed. The installed road board is inclined downward so as to form the same plane as the movable floor, and its rear end is grounded on the ground to enable loading and unloading of transport vehicles.

In the above state, the transport vehicle is driven by itself, loaded, and tightened to the moving floor, and then the hydraulic cylinder serving as the rotation means is operated to rotate the lift arm in the forward direction. As the lift arm rotates, the moving floor moves forward, and the front end of the moving floor is lifted upward.
It has a relatively steep slope and is fixed in place.

On the other hand, as the lift arm rotates, the road board
As the middle part of the road board opening/closing wire is pulled forward, it rotates in the upright direction around the lower end pivotally connected to the movable floor, and when the movable floor is fixed at a predetermined position, It stands up in a substantially vertical direction and closes the rear end of the moving bed.

When moving the moving bed rearward from the loaded state of the transport vehicle, the hydraulic cylinder is operated to rotate the lift arm rearward. As the lift arm rotates, the road board opening/closing wire gradually loosens, so the road board rotates in the opening direction due to its own weight, and the loading/unloading state of the transport vehicle is established.

(Embodiment) The present invention will be described below with reference to an illustrative embodiment.

a is the loading platform of a single-vehicle transport vehicle,
Fixed bed 12 fixed on the chassis frame 11
The movable bed 13 is movably placed on the fixed bed 12, and the road board 14 is rotatably pivoted to the rear end of the movable bed.

The fixed bed 12 is formed of a frame made of steel bars or the like in order to reduce the weight, and an inclined part that slopes downward together with the chassis frame 11 is formed at the rear end of the fixed bed 12. An installation base 15 is provided at the front end of the machine, on which a power unit 20 and the like for operating a hydraulic cylinder 18, which will be described later, is installed.

A movable floor 1 is provided on the upper surface of the left and right sides of the installation base 15.
The base end of a lift arm 16 that moves the movable bed 13 back and forth and moves the front end of the movable bed 13 up and down is pivotally connected via a bracket 17. The tip of the lift arm 16 is pivotally attached to the lower surface near the front end of the movable floor 13, and the lift arm 16 is rotated by a hydraulic cylinder 18 serving as a rotation means. .

The hydraulic cylinder 18 has its base end rotatably connected to a cylinder bracket 19 hanging down from the lower surface of the fixed bed 12 behind the pivot point of the lift arm 18, and its tip end connected to the intermediate portion of the lift arm 16. It is rotatably pivoted to.

20 is a power unit installed on the installation stand 15, and the power unit 20 and the hydraulic cylinder 18 are connected to a hydraulic pipe 21 and a hydraulic hose 22.
connected via. Reference numeral 23 denotes an operation switch for operating the power unit 20, which is mounted at an appropriate position on the loading platform for easy operation.By operating the operation switch 23, the lift arm 16 is rotated and the movable floor 13 is moved. In addition to moving back and forth, the front end of the moving bed 13 is also moved up and down. A battery 24 is a power source for the power unit 20.

The moving floor 13 is formed by framing with steel bars or the like in the same manner as the fixed floor 12, and on both sides of the moving floor 13 are expanded metals 25 for carrying the transport vehicle b.
The walkway plates 14 are pivotally mounted in a pair on both sides of the rear end of the moving floor 13 via hinges 26, and the left and right walkway plates 14 are connected by a connecting rod 27.

28, the road plate 1 is moved as the lift arm 16 rotates.
4, one end of the road board opening/closing wire 28 is attached to the fixed floor 12 behind the pivot point of the lift arm 16 via a locking tool 29. The other end of the road board opening/closing wire 28 is attached to the vicinity of the lower end of the road board 14 via a locking tool 30. And the road board opening/closing wire 28
The middle part of the connecting rod 30 connects the left and right lift arms 16 so that the intermediate portion of
It is movably hung on a tension roller 31 attached to. 32 is a guide roller that guides the road board opening/closing wire 28 between the tension roller 31 and the road board 14;
is attached to the side surface of the movable bed 13 corresponding to the inner edge of the expanded metal 25.

Numeral 33 is a locking device for locking the road board 14 in the closed state, and is composed of a locking arm 34, a slider 35, a guide pipe 36, a latch 37, and the like. The base end of the lock arm 34 is rotatably attached to the outer edge of the road board 14 via a bracket 38, and a cylindrical slider 35 is rotatably attached to the tip. The slider 35 is slidably fitted into a guide pipe 36 attached to the upper surface of both side edges of the rear end of the movable plate 13 via a bracket 39 which also serves as a stopper. An operating lever 41 is rotatably attached to the side surface of the guide pipe 36 via a bracket 40, and a latch 37 is provided near the base of the operating lever 41.
The base end of the latch 37 is rotatably pivoted, and the tip of the latch 37 is connected to a hook 4 fixed to the front bracket 39 of the brackets 39 fixed to the movable plate 13.
2.

Reference numeral 43 is a load tightening wire for fixing the transport vehicle b, and the base end of the load tightening wire 43 is connected to the movable plate 1.
The movable plate 13 is attached to a ratchet type winder 44 fixed to the upper surface of the front outer edge of the movable plate 13 so as to be able to be wound up.
The guide roller 46 is disposed along the inner edge of the expanded metal 25, and its tip is positioned at the rear of the movable plate 13. A hook 47 that locks onto the transport vehicle b is attached to the tip of the load tightening wire 43, and among the plurality of guide rollers 46 attached to the road plate 13 of the load tightening wire 43, the front guide roller 46 In between,
A hook 48 that is movable between the guide rollers 46 and that allows the load tightening wire 43 to move is attached via a support roller 49.

In order to fix the transport vehicle b using the transport vehicle fixing device consisting of the load tightening wire 43 and the like, first, the transport vehicle b is
After that, the operating lever 50 of the winding machine 44 is locked.
is operated to wind up the load tightening wire 43 to tighten and fix it. To release the fixation, remove the claw 51 of the winder 44 to free the ratchet.
After loosening the tension, remove the hooks 47, 48.

It should be noted that the locking device 33 of the road board 13 and the transport vehicle fixing device are merely examples thereof, and are not limited to the embodiments described above. Also, lift arm 16
The rotating means is not limited to the above-mentioned embodiment, and can be appropriately selected as long as it can rotate the lift arm 16.

Reference numeral 52 in the figure is a stopper installed upright on the front side of the lift arm 16 on the mounting table 15,
The stopper 52 prevents the lift arm 16 from rotating excessively forward. The stopper 52 may be provided with a limit switch so that when the lift arm 16 comes into contact with the stopper 52, the operation of the hydraulic cylinder 18 is stopped. Further, reference numeral 53 in the figure is a slide roller rotatably attached to the rear end of the fixed bed 12, and is used to smoothly move the movable plate 13 in the front and back direction.

(Effects of the present invention) As described above, according to the present invention, when the transport vehicle is loaded, the movable floor on which the transport vehicle is placed is inclined, so that the loading platform can be shortened accordingly. I can do it. Therefore, since the overall length of the vehicle carrier can be shortened, not only can even a large carrier be loaded compactly, but it can also make small turns, allowing it to travel easily even on narrow roads. .

Furthermore, according to the present invention, the road board is opened and closed at the same time by moving the movable floor, so two operations can be performed with a single touch, making the operation easy. This has effects such as being able to prevent forgetting to tighten the plate.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the loading platform structure of a vehicle transport vehicle according to the present invention, Fig. 2 is a partially enlarged perspective view showing the relationship between the lift arm and the road board opening/closing wire, and Fig. 3 is an illustration of the road board locking device. FIG. 4 is a partially enlarged perspective view showing an embodiment of the transport vehicle fixing device; FIGS. 6A, 6B, and 6C are operation explanatory diagrams showing the loading state of a transport vehicle by a conventional vehicle transport vehicle. 11 is a chassis frame, 12 is a fixed floor, 13 is a movable floor, 14 is a road board, 16 is a lift arm, 18
28 is a hydraulic cylinder, 28 is a road board opening/closing wire, and 30 is a connecting rod.

Claims (1)

[Scope of utility model registration request] A cargo platform consisting of a fixed floor fixed on a chassis frame, a movable floor movably placed on the fixed floor, and a road board etc. rotatably pivoted to the rear end of the movable bed. In the vehicle carrier, a base end of a lift arm is rotatably pivoted to the upper surface on both left and right sides near the front end of the fixed floor, and a tip end of the lift arm is attached to the lower surface on both left and right sides near the front end of the movable bed. The lift arm is pivotally connected to the fixed floor, and a rotating means for rotating the lift arm is provided between the lift arm and the fixed floor, and a path is provided behind the pivot point of the lift arm on the fixed floor. Attach one end of the plate opening/closing wire,
The other end of the road board opening/closing wire is attached to the road board, and the middle part of the road board opening/closing wire is passed through a connecting rod provided between the left and right lift arms, and the lift arm is rotated. 1. A loading platform tilting device for a vehicle carrier, characterized in that the road plate is opened and closed by the following steps.