JP2743136B2 - Automatic steps in heavy equipment transport - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention relates to yumbo, construction machinery,
The present invention relates to improvement of automatic walking in heavy equipment such as shovel cars and bulldozers.

[0002]

2. Description of the Related Art As a stepping device for a heavy goods carrier, when a stepping plate is not used, the vertical stepping plate travels in an upright state when the stepping plate is not used. There is something to do.

[0003]

As a conventional stepping device for a heavy-duty truck, which travels upright along the entire length of a vertically long stepping plate when the stepping plate is not used, an obstacle for loading long objects. At the same time, the attention due to the height of the step board and the rear view are hidden in a certain range, so that the attention is easily distracted, which may cause an accident. In addition, when the step board is not used, storing the vertically-long step board in the lower part of the loading platform requires time for the operation of pulling out the stored step board with a certain width and the operation of storing the step board once pulled out, Further, there is a drawback such that the load is spilled when the back of the loading platform is opened. Furthermore, since the width of the conventional step board has to be relatively narrow for structural reasons, it is necessary to move the step board in the horizontal direction to a width corresponding to the type of heavy goods to be stacked. there were. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to allow a relatively wide step board to be bridged with one touch and to move the step board in a horizontal direction. It is an object of the present invention to provide an automatic walk in a heavy equipment transporting vehicle which can improve visibility by making the tailgate lower as a whole, and can completely prevent spillage.

[0004]

In order to achieve the above-mentioned object, in order to achieve the above object, in a heavy equipment transporting machine having a lifting device at a lower portion of a front part, a rear end portion of the loading platform is flush with a loading platform of the heavy equipment transporting vehicle. A fuel plate rotatably supported on both sides is connected to a hydraulic cylinder rod mounted on the lower part of the vehicle so that the fuel plate can be raised and lowered by expansion and contraction of the hydraulic cylinder rod. In the extended horizontal state, the fuel plate and the step plate are pivotally connected at the rear part of the fan plate. In the extended horizontal state of the step plate, the supporting swinging cylinder is attached to the front part of the side plate of the step plate, and A support rod rotatably supported at the lower rear portion is slidably provided on the support swing cylinder, a pin hole is provided at a predetermined position of the support swing cylinder, and a pin is attached to and detached from the pin hole. Freely insert and insert the fan plate When the step plate is in the extended horizontal state, the front end of the support rod comes into contact with the pin when the pin is inserted into the pin hole, and the support swing cylinder and the support rod have one rigidity. Providing a support rod and a pin so as to become a support, by expanding and contracting the hydraulic cylinder rod, so that the fan plate and the step board can be folded or extended, and a loading platform of the heavy equipment transport vehicle, When the fan and step board were in the extended state, the lifting device was activated at appropriate times to tilt the heavy equipment transporting vehicle rearward to ground the step board. Further, in a heavy equipment transporting machine having an elevating device at a lower part of a front part, a fuel plate rotatably supported on both sides of a rear end portion of the load carrier so as to be flush with a load carrier of the heavy equipment transporting machine, Is connected to a hydraulic cylinder rod mounted on the lower part of the vehicle, and the expansion and contraction of the hydraulic cylinder rod allows the fuel plate to be raised and lowered, and the fuel plate and the step plate are arranged at the rear part of the fuel plate in the extended horizontal state of the fuel plate. When the support plate is pivotally mounted and the support plate is mounted on the front portion of the side plate of the step plate in the extended horizontal state of the step plate, the support rod rotatably supported at the lower rear portion of the back of the car is supported by the support rod. The support swing cylinder is slidably provided, a pin hole is provided at a predetermined position of the support swing cylinder, a pin is removably inserted into the pin hole, and the fan plate and the walking plate are extended to a horizontal state. One time, insert a pin into the pin hole In the inserted state, the support rod and the pin are provided so that the front end of the support rod comes into contact with the pin and the support swing cylinder and the support rod form one rigid support. By performing the expansion and contraction operation, the fan plate and the step plate can be folded or extended, and furthermore, a projecting plate having a pin hole is projected at a predetermined position of the fan plate, and the fan plate and the step plate are In the folded state, a through hole is provided at a stepping plate position corresponding to the projecting plate position of the fan plate, and the projecting plate is passed through the through hole when the fan plate and the stepping plate are in the overlapping state. It was pinned to the pin hole. Further, the fan plate and the step board are configured such that a concave portion is formed at the center thereof, and when the fan plate and the step board are set in the upright state, a gap of a predetermined interval is formed at the center part. I made it.

[0005]

[Function] A pin is inserted into a pin hole at a predetermined position of a swinging cylinder for support, a hydraulic cylinder is pulled, and a fuel plate is automatically moved by pulling down a fuel plate to automatically move a lift plate and a step plate. And can be extended almost horizontally in the horizontal direction, and conversely, by removing the pin inserted into the pin hole at a predetermined position of the supporting swinging cylinder and compressing the piston rod of the hydraulic cylinder, automatically The vehicle can be fixed in an upright position at the rear of an automatic walking vehicle including a fan plate and a step plate. Further, by pinning the fan plate and the step board in a superposed state, the fan plate in which the step plate is superposed at the lower portion can be held horizontally with the loading surface.

[0006]

An embodiment will be described with reference to the drawings. In FIGS. 1 to 8, the fuel plate 2 at the rear of the loading platform 1 of the heavy equipment transporting vehicle is changed from an upright state to a horizontal state with respect to the loading platform surface by the lever 17 rotating backward by the pulling of the hydraulic cylinder rod 3. It is provided to be able to undulate. The fuel plate 2 has a shaft support 15 at a lower portion, and a central portion above the support 15 as a concave portion 7. At the upper end of the fan plate 2, the upper ends of the left and right walking boards 4, 4 are pivotally connected by hinges 8. A swinging cylinder 5 for support is provided above the side plate of the step board 4.
On the other hand, a support rod 6 rotatably supported at the lower rear portion of the heavy equipment transporting vehicle is slidably provided in the support swing cylinder 5. Swing cylinder 5 for support
A pin hole 14 is formed at a predetermined position, and a pin 16 for stopping a rod is inserted into the pin hole 14 in order to appropriately adjust the length of the link. When the hydraulic cylinder rod 3 is towed, the fuel plate 2 shifts from the upright state to the horizontal state, and at the same time, the walking plate 4 pivotally attached to the upper end of the fuel plate 2 by a hinge 8 or the like also becomes a support swing cylinder 5 and a support rod. When the lower part is opened while being guided and held by the support rod 6, the support rod 6 advances inside the support swing cylinder 5.
When the pin 16 is inserted into the pin hole 14 of the support swing cylinder 5 at an appropriate position, the front end of the support rod 6 comes into contact with the pin 16 and the support swing cylinder 5 and the support rod 6 are connected. It becomes one rigid support. If the front plate 2 is further lowered while the front end of the support rod 6 is in contact with the pin 16, the upper surface of the front plate 2 and the upper surface of the walking plate 4 will eventually be flush with the bed surface. In this state, the supporting swing cylinder 5
The triangle formed by the rigid support body including the support rod 6 and the upper surface of the horizontal fan 2 and the step board 4 is locked in a completely restrained state. With the upper surface of the fan plate 2 and the upper surface of the stepping plate 4 being horizontal with the surface of the loading platform, the heavy equipment transporting vehicle is inclined backward and the end of the stepping plate 4 is grounded to the ground a so that it can be used as a step. In addition, anti-slip projections 9 are formed at predetermined intervals on the upper surface of the fan plate 2 and the upper surface of the walking plate 4.

Further, a protruding piece 11 having a pin hole 10 is protruded at a fixed position on the back of the fan plate 2 and the protruding piece 11 of the fan plate 2 is formed when the fan plate 2 and the step board 4 are overlapped.
Is provided with a through hole 12 provided at a position corresponding to the step board. Therefore, when the fan plate 2 and the step plate 4 in the upright state are overlapped with each other, the protruding plate 11 is made to pass through the through-hole 12, and when the connecting pin 13 is inserted into the pin hole 10 in this state, the fan plate 2 and the step plate 4 are formed. And 4 are integrated. When the hydraulic cylinder rod 3 is pulled with respect to the fuel plate 2 in the upright state as described above, the fuel plate 2 is maintained in a horizontal state while being overlapped with the step plate 4, and the loading bed extends rearward to load. The area increases. In this case, the pin 16 is inserted through the pin hole 14 of the swinging cylinder 5 for support.
It is natural to escape.

In FIGS. 9 to 11, the widths of the fan plate 21 and the step plate 22 are formed in an integral structure that is substantially equal to the lateral width of the carrier 23. The fuel plate 21 is formed by the expansion and contraction of the hydraulic cylinder rod in the same manner as in the previous embodiment.
1 can be raised and lowered from an upright state to a horizontal state. At the upper end of the fan plate, a step plate is pivotally connected with a hinge 24 or the like, and a support swinging cylinder 25 is mounted on the upper part of both side plates of the step plate 22, while a rotatable support is provided at the rear part of the automobile. The supported support rod 26 is connected to the support swing cylinder 25.
It is slidably provided inside. The fan 21 and the step board 2
2 is formed to be substantially equal to the width of the loading platform 23 and the side plate 2
7 so as to improve the obstruction of the rear view when the vehicle is running. In order to improve the rear view, horizontal through holes 28 are formed at predetermined intervals in a column in the entire width of the fan plate 21 and the step board 22. It has been done. Non-slip projections are formed on the outer surfaces of the fan plate 21 and the step plate 22. Note that the horizontal holes 28 formed in the fan plate 21 and the step plate 22 are
1 and the step board 22 are in a superposed state, the side holes 28, 28
Is made transparent. 29 is a pin hole.

[0009]

According to the first aspect of the present invention, there is provided an automatic walking machine for transporting a heavy machine having a lifting device at a lower portion of a front portion of the heavy machine. The pivotingly supported pivoting plate is connected to a hydraulic cylinder rod mounted on the lower part of the vehicle so that the pivoting of the hydraulic cylinder rod allows the pivoting of the pivoting plate and the extension of the pivoting plate. In the horizontal state, the support plate and the step plate are pivotally connected at the rear part of the support plate, and in the extended horizontal state of the support plate, a support swinging cylinder is attached to the front part of the side plate of the support plate, A support rod rotatably supported at the lower portion is slidably provided on the support swing cylinder, a pin hole is provided at a predetermined position of the support swing cylinder, and a pin is detachably attached to the pin hole. Into the above, When the board and the step board are in the extended horizontal state, the front end of the support rod abuts on the pin when the pin is inserted into the pin hole, and the support swing cylinder and the support rod become one. A support rod and a pin are provided so as to be a rigid support member, and the hydraulic cylinder rod is expanded and contracted so that the fuel plate and the step plate can be folded or extended, and the carrier of the heavy equipment transporting vehicle is provided. When the lifting plate and the stepping plate are in the extended state, the lifting device is actuated in a timely manner to incline the heavy device transporting vehicle rearward to ground the stepping plate, so that the loading platform of the heavy machine transporting vehicle and the lifting plate When the step board is in the extended state, the lifting device is actuated in a timely manner to tilt the heavy equipment transporting vehicle rearward to ground the step board, so automatic operation is only required by operating the hydraulic cylinder rod and attaching / detaching the pin. Step Erection and storage can be in one touch. Further, since the fan plate and the step board have a sufficient width for loading and unloading the heavy equipment, the sliding work of the step becomes completely unnecessary due to the width of the heavy equipment to be loaded and unloaded as in the related art. When no heavy equipment is loaded, the fan is always upright, so there is no worry about spillage. Further, since the mechanism is simple in structure, the probability of failure can be minimized, so that it is very safe and can be applied to all types of vehicles from large vehicles to small vehicles. In addition, by appropriately changing the lengths of the fan plate and the walking plate, the position of the pin holes of the support swing cylinder and the support swing cylinder, and the length of the support rod, a wide range of vehicles from large vehicles to small vehicles can be obtained. It can be attached to a car model. In addition, when the upper surface of the fan plate and the upper surface of the step plate are flush with the loading surface, the rigid support consisting of the swinging cylinder for support and the support rod, the upper surface of the horizontal fan plate, and the step plate The link formed by is completely restrained and can strongly support the load.

According to the second aspect of the present invention, there is provided an automatic stepping machine for transporting a heavy machine having a lifting device at a lower portion of a front portion thereof. A movable pivotally supported fan is connected to a hydraulic cylinder rod mounted on the lower part of the vehicle so that the fan can be raised and lowered by the expansion and contraction of the hydraulic cylinder rod. At the rear of the fan plate, the fan plate and the step plate are pivotally connected, and in the extended horizontal state of the step plate, a support swinging cylinder is attached to the front part of the side plate of the step plate, while the lower part of the back of the bed of the vehicle is mounted. A rotatably supported support rod is slidably provided in the support swing cylinder, a pin hole is provided in a predetermined position of the support swing cylinder, and a pin is removably fitted in the pin hole. Inserting the said fan When the pin and the step board are in the extended horizontal state, the front end of the support rod abuts on the pin in a state where the pin is inserted into the pin hole, and the support swing cylinder and the support rod are one. A support rod and a pin are provided so as to be a rigid support, and the hydraulic cylinder rod is expanded and contracted so that the fan plate and the step plate can be folded or extended. A projecting plate having a pin hole is protruded, and a through hole is provided at a stepping plate position corresponding to the projecting plate position of the fanning plate when the fanning plate and the stepping plate are folded and overlapped. The protruding plate is penetrated through the through hole when the plate is in the superposed state, and in this state, it is pinned to the pin hole, so if the integrated fan plate and the step plate are in a horizontal state, the loading area is large. can do This is particularly effective for loading long materials.

According to the third aspect of the present invention, in the automatic walking of the heavy equipment transporting vehicle, the fan plate and the step plate are formed with a recess at the center thereof, and the fan plate and the step plate are set up. At this time, since a predetermined gap is formed in the center portion, a projecting portion such as a shovel portion of a shovel car can be projected from the recessed portion and held, so that the effective area of the carrier is used effectively. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a state where an automatic walk is grounded.

FIG. 2 is an enlarged perspective view of a main part of the rear.

FIG. 3 is a side view showing the fan plate in an upright state.

FIG. 4 is a side view showing a fan plate and a walking plate in a superposed state.

FIG. 5 is a side view showing a process of retracting the fan and the walking board.

FIG. 6 is a side view showing a state in which the fuel plate, the walking plate, and the carrier are flush with each other.

FIG. 7 is an enlarged cross-sectional view showing a state in which a support pin is inserted into a pin hole of a support swing cylinder.

FIG. 8 is a partially enlarged view showing a state in which the fan and the step board are connected.

FIG. 9 is a rear view showing the fan and the walking board as the full width of the carrier.

FIG. 10 is a partial side view showing the fan and the walking board in an upright state.

FIG. 11 is a partially enlarged view showing a state in which the through holes of the fan plate and the walking plate are aligned.

[Explanation of symbols]

 1. . Luggage carrier 2. . Fan plate 3. . Rod for hydraulic cylinder 4. . Step board 5. . Swing cylinder for support 6. . Support rod 7. . Recessed part 8. . Hinge 9. . Anti-slip projection 10. Pin hole 11. Projection piece 12. Through holes 13. Connecting pin 14. Pin hole 15. Shaft support 16. Pin 17. Lever 21. Fan plate 22. Step board 23. Luggage carrier 24. Hinge 25. Swing cylinder for support 26. Support rod 27. Side plate 28. Side hole 29. Pin hole

Claims (3)

(57) [Claims] In a heavy equipment transporting vehicle having a lifting device at a lower portion of a front portion, a fuel plate rotatably supported on both sides of a rear end portion of the loading platform so as to be flush with a loading platform of the heavy equipment transporting vehicle, The fuel plate is connected to a hydraulic cylinder rod mounted on the lower part of the vehicle so that the fuel plate can be raised and lowered by the expansion and contraction of the hydraulic cylinder rod. A supporting rod is pivotally mounted on a stepping plate, and a supporting swinging cylinder is mounted on a front portion of a side plate of the stepping plate in an extended horizontal state of the stepping plate. Is provided slidably in the supporting swinging cylinder, a pin hole is provided in a predetermined position of the supporting swinging cylinder, and a pin is removably inserted into the pin hole, so that the fan plate and the step plate extend. When in the horizontal state, In the state where the support rod is inserted, the support rod and the pin are provided so that the front end of the support rod comes into contact with the pin and the support swing cylinder and the support rod become one rigid support. By performing the expansion and contraction operation of the hydraulic cylinder rod, the fuel plate and the foot plate can be folded or extended, and the loading platform of the heavy equipment transporting vehicle, and the timely lifting device when the fuel plate and the foot plate are in the extended state The automatic walking in the heavy equipment forwarding, characterized in that the heavy equipment forwarding is tilted rearward to ground the footboard. 2. A heavy equipment transporting vehicle having an elevating device at a lower part of a front part, wherein a fuel plate rotatably supported on both sides of a rear end of the loading platform so as to be flush with a loading platform of the heavy equipment transporting vehicle, The fuel plate is connected to a hydraulic cylinder rod mounted on the lower part of the vehicle so that the fuel plate can be raised and lowered by the expansion and contraction of the hydraulic cylinder rod. A supporting rod is pivotally mounted on a stepping plate, and a supporting swinging cylinder is mounted on a front portion of a side plate of the stepping plate in an extended horizontal state of the stepping plate. Is provided slidably in the supporting swinging cylinder, a pin hole is provided in a predetermined position of the supporting swinging cylinder, and a pin is removably inserted into the pin hole, so that the fan plate and the step plate extend. When in the horizontal state, In the state where the support rod is inserted, the support rod and the pin are provided so that the front end of the support rod comes into contact with the pin and the support swing cylinder and the support rod become one rigid support. By making the hydraulic cylinder rod expand and contract, the fan plate and the step plate can be folded or extended, and furthermore, a projecting plate having a pin hole is protruded at a predetermined position of the fan plate, and In the folded state, the plate is provided with a through hole provided at a step plate position corresponding to the projecting plate position of the fan plate, and the projecting plate is penetrated through the through hole when the fan plate and the step plate are in a stacked state, In this state, the pin is fixed to the pin hole. 3. An indentation is formed at the center between the fan plate and the step plate, and a predetermined gap is formed at the center portion when the fan plate and the step plate are raised. The automatic walking in the heavy equipment transporting vehicle according to claim 1, wherein the automatic walking is performed.