JP2588442B2 - Vehicle carrier - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle carrier suitable for transporting heavy equipment such as a civil engineering work special vehicle such as a bulldozer or an asphalt finisher.

[Conventional technology]

In general, when moving a heavy machine to a destination, running the heavy machine itself not only slows down the running speed but also damages a road surface. Therefore, a method of mounting the heavy machine on a large-sized transport vehicle is adopted.

By the way, if a heavy crane or the like is used each time a heavy equipment is mounted on such a large transport vehicle, a crane or the like must be prepared simultaneously with the movement of the large transport vehicle, which is extremely inefficient.

Therefore, conventionally, a heavy machine is carried on a carrier bed by using a heavy machine from the ground without using a crane.

For this purpose, the following various technologies have been proposed for the rear end structure of the carrier of the carrier.

(First Precedent Example) As shown in FIG. 13, an inclined frame (including a subframe) extending integrally from a horizontal main body frame (including a subframe) 2 of the frame of the transport vehicle 1 and descending rearward. ) 3, and a step plate 5, which is integrated with the movable frame of the cargo bed at the rear end of the main frame 4 above the inclined frame 3, is rotatably arranged using a hydraulic cylinder or the like as a drive source. It is known that when transporting heavy equipment, a separate conductive plate 50 is connected to the step plate 5 disposed at an angle, and the heavy equipment is sequentially placed on the loading platform using the conductive plate 50 and the step plate 5 as a step. It is something to put on.

(Second Prior Example) As shown in FIG. 16, a long and short conductive plate 51 is provided at the rear end of the underframe 6 of the transport vehicle 1A with the lifting device so as to be rotatable by a hydraulic cylinder as a drive source or manually. It is a concatenation.

(Third Prior Example) As shown in FIG. 17, a horizontal home frame (including a subframe) 2 of the frame of the transport vehicle 1 without the lifting device
Frame (including a sub-frame) 3 which extends integrally from the rear and descends rearward, and is integrated with the movable frame of the carrier at the rear end of the main frame 4 above the inclined frame 3 and at the rear end. The step plate 5 is rotatably disposed by using the hydraulic cylinder 8 or the like as a driving source, and a relatively short guide plate 52 is rotatably provided at the rear end of the step plate 5.

(Fourth prior example) This is disclosed in Japanese Utility Model Laid-Open Publication No. 63-16245, and its basic configuration is the same as that of a transport vehicle without a lift device shown in FIG. 17, but as shown in FIG. The guide plate 52 pivotally supported by the rear portion 6 of the underframe and the step plate 5 pivotally supported by the rear end of the front portion of the underframe are linked by a link mechanism to raise and lower by one operating cylinder. It goes up and down.

[Problems to be solved by the invention]

However, each of the prior examples has the following problems.

(First Precedent Example) Since the conductive plate 50 is long, whether it is made of wood or aluminum,
It is extremely heavy and must be able to be transported by input, so it is not possible to use a wide thing,
Depending on the type of heavy equipment to be mounted, the position must be changed each time as shown in FIG. Further, as shown in FIG. 15, when a vehicle having a low floor such as an asphalt finisher is transported depending on the type of heavy equipment, as shown in FIG. Often, contact with the corners of

(Second Prior Example) The conductive plate 51 is extremely long, and the conductive plate 51
Storage height is high, giving a sense of danger to the following vehicle,
The vehicle may collide with signs or trees while driving (especially when turning). Further, as shown in FIG. 16, in order for the heavy equipment to be able to move on its own, it is necessary to increase the height of the front of the vehicle equipped with the lifting device to a considerable extent. give.

(Third Prior Example) Since the vehicle is not a vehicle with a lifting device, there is a limit in shortening the conductive plate 52, and the above-described problem cannot be solved.

Further, since the load on the guide plate 52 acts on the step plate 5, all the loads on the guide plate 52 and the step plate (including the underframe) 5 eventually act on the hinge 7 during traveling,
Unless the hinge 7 is very thick, it cannot withstand strength in many cases. In particular, as shown in FIG. 18, in the process of the vehicle M climbing onto the bed, the component of the load of the vehicle M falling rightward acts directly on the hinge 7, and the strength of the hinge 7 becomes a problem. .

In addition, even if the step plate 5 is always kept horizontal by the hydraulic cylinder 8 during traveling, the step plate 5
May be vibrated during traveling because of being supported by the hydraulic cylinder 8, and this vibration directly causes deflection from the vertical surface of the conductive plate 52, which is extremely unstable.

(Fourth Precedent Example) This fourth precedent example may seem at first glance to be reasonable, but instead, the guide plate 52 and the step plate 5 are linked by a link mechanism, and the up-and-down movement and the one Ascending / descending becomes remarkable as a large net in terms of practicality.

That is, when the target transport vehicle M sequentially climbs the guide plate 52, when the transport vehicle M climbs to some extent, as shown in FIG. Touching the corner. Even if the cylinder is actuated to raise the step plate 5 in order to solve this, the guide plate 52 which is about to stand up comes into contact with the transport vehicle M.

Further, when the target transport vehicle is completely mounted, there is a case where the step board is required to be lowered temporarily or constantly. In particular, when the backhoe (club bucket car) is mounted backward with the boom folded, the boom is folded when the vehicle is running by positioning the bucket at the tip of the boom on the stepped plate 5 lowered. To prevent the curved part from contacting the bridge girder,
Is lowered, the conductive plate 52 is also lowered and cannot be held upright.

Further, the vibration of the guide plate 52 and the step plate 5 is transmitted to the other via the link mechanism, and stable running is impossible.

In addition, in the prior example, since the transport vehicle is not equipped with a lifting device, the target transport vehicle is to be climbed in a state where the rear end of the underframe is separated from the ground, and particularly when the target transport vehicle is heavy. In this case, the front of the truck floats up and is extremely dangerous.

Therefore, an object of the present invention is to solve all the above problems.

[Means for solving the problem]

The present invention that has solved the above-mentioned problem is provided with an elevating device that can be tilted by raising the front portion when the elevating device provided at the front is operated, and that has a guide plate of a transport vehicle at the rear end of the underframe. In a motor vehicle, at a position between a frame, an inclined frame integrated with the frame and having a horizontal main body frame and a downwardly inclined rearward integrated with the frame, and a rear end of the main body frame. A step plate rotatably supported between an inclined state in which the frame is used as a support and a horizontal state in which the rear is placed on the inclined underframe and a horizontal state continuous with the main body underframe; A guide plate pivotally supported at a rear end of the frame between a vertical state and a state in contact with the ground, a step plate rotating means for rotating the step plate, and a guide plate undulation for raising and lowering the conductive plate Means, and the step plate rotation is provided. Means and the guide plate raising and lowering means are configured to operate the step board and the guide plate independently of each other, and the rear end of the inclined frame is inclined with the operation of the elevating device so that the vehicle is inclined, and It can be installed on the ground when a transport vehicle gets on the vehicle.

[Action]

As a setup for the vehicle to get on the loading platform, the lifting device at the front of the vehicle with the lifting device is activated, and the front is raised. As a result, the lower end of the rear end of the inclined frame is
It is approached with a separation distance of about 10 to 20 mm. afterwards,
The step plate is lowered until it comes into contact with the inclined underframe and the frame, and the guide plate is turned from the upright state until its front end (rear end) comes into contact with the ground.

After such preparation, the vehicle rides on the bed while sequentially riding on the guide plate and the step plate from the ground. When the vehicle gets on, the spring of the vehicle body contracts and the lower end of the rear end portion of the inclined frame comes into contact with the ground and receives a load.

In this riding process, the load of the vehicle applied to the guide plate acts on the inclined underframe via the rotating shaft of the guide plate. Further, the load of the vehicle on the step plate mainly acts on the frame and additionally on the inclined underframe. Further, the load acting on the inclined underframe acts on the sub-frame and the main frame, and as a result, the load is dispersed. Therefore, the load applied to the hinge is reduced as in the above-mentioned third prior art, and the strength is extremely excellent.

In addition, when the target transport vehicle has a low minimum ground clearance, for example, asphalt finisher, raise the guide plate if one of the front and rear wheels rides on the floor plate on the loading platform and the other wheel rides on the step plate. By raising the step board and making the step board flat with respect to the floor, it is possible to prevent the asphalt finisher from colliding with the corner of the connection between the floor board and the step board. On the other hand, the third and fourth embodiments described above
In the prior example, such an operation cannot be performed. In particular, in the fourth prior example, since the guide plate is raised at the same time as the step plate is raised, the above-described collision may occur, and the guide plate may even collide with the rear portion of the asphalt finisher.

Also, if necessary, as shown in FIG. 12,
By raising the step board, separating the inclined frame and the step board, and laying a long conductive board separately between it and the ground, it is possible to flatten the space from the conductive board to the carrier body, Vehicles can be loaded.

Further, in the case where the step plate must be held in a horizontal state according to the regulations during traveling due to the dimensions of the carrier, the vibration of the step plate due to the vibration of the automobile causes the load acting on the step plate rotating cylinder to be: Since it is only a step plate without a conductive plate, it is not large. Moreover, since the guide plate is cut off from the step plate and is attached to the inclined underframe, the vibration of the guide plate is not affected by slight expansion and contraction of the step plate rotation cylinder. Therefore, the stability of the conductive plate is excellent.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in FIGS.

Vehicle 1A with a lifting device according to the present invention, as is known,
A lifting device 10 driven by a hydraulic cylinder is provided at the front.

Reference numeral 11 denotes a main body frame, and a subframe 11B as a vertical joist is integrally mounted on an upper portion of the main body portion of the carrier. These constitute the frame referred to in this specification. Further, in the body part of the bed, a horizontal joist 12 is provided so as to pass through the sub-frame 11B, thereby forming a joist assembly.

At the back of the loading platform, the rear part of the body frame 11 is cut down rearward to form a cut-down frame 11 '. The cargo bed in this embodiment is basically composed of the joist and the surrounding underframe 13 and floor plate 14 integrated therewith. At the rear of the underframe 13, there is provided an inclined underframe 13B that extends integrally from the horizontal main body underframe 13A and descends rearward.

Above the inclined frame 13B and the main body frame 1
A frame having a center of rotation between the rear end of the frame 3A and a step plate 16 is provided so as to be rotatable about a rotation shaft 15 with the main body frame 11 as a support body in this embodiment.

The step plate 16 has a skeleton 16A and a surface plate 16B projecting therearound.When the skeleton 16A enters the inclined frame 13B, the periphery of the surface plate 16B rides on the inclined frame 13B. When the step plate 16 is lowered, the lower surface of the frame 16A abuts on the cut-down frame 11 'or, if necessary, abuts the upper surface of the interposed lower sub-frame (not shown). Is mainly received in the frame. The rotation of the step plate 16 is performed by the upper and lower hydraulic cylinders 17 provided between the cut-down frame 11 'and the frame 16A of the step plate 16. In this embodiment, the hydraulic cylinder 17 mainly constitutes the step plate rotating means according to the present invention.

Further, a conductive plate 18 is provided so as to be able to move up and down with respect to the rear end of the inclined frame 13B. When undulating the conductive plate 18,
Mounting plate with one end straddling between the cut-down frames 11 ', 11'
This is performed by a hydraulic cylinder 20 for raising and lowering, which mainly constitutes the guide plate raising / lowering means according to the present invention, which is attached to 11C and the other end is connected to the guide plate 18 via an arm 19. Reference numeral 21 denotes a rotation shaft of the conductive plate 18, which is integrated with the arm 19. 22 is a stopper fixed to the frame 16A, 23
Is a stopper receiver fixed to the demotion frame 11 '.

On the other hand, as shown in FIG. 10, the conductive plate 18 has a width substantially equal to the width of the carrier, and a detachable auxiliary conductive plate 18A having a small width is provided at the center in the width direction. When the boarding vehicle is a club bucket car or the like, the auxiliary guide plate 18A is removed, and the club of the club bucket car is positioned in the space where the board is removed, so that boarding becomes easy. In the case of ordinary heavy machinery, the auxiliary guide plate 18
A is fitted from above.
The projection pin at the lower end of 8A is inserted into the rear frame of the inclined underframe 13B, and as shown in the partially enlarged view of FIG. 10, the recesses of the main body conductive plate 18 and the auxiliary conductive plate 18A are formed. The fixing pins 24 are inserted through the side walls formed by the respective members, and the body guide plate 18 is attached to one end of the fixing pins 24 for safety.
The safety pin 26 held by the holding seat 25 fixed to the bracket is inserted. 27 is a turnbuckle for fixing the conductive plate 18.

On the other hand, as shown in FIG. 1, the lower end of the rear end portion of the inclined underframe 13B approaches the ground when the elevating device 10 is operated, and is accessible when the vehicle gets on. As shown in FIGS. 1 and 2, the winch 29 is wound with a wire 28 having a hook 28a at its tip. Furthermore, the hydraulic motor for starting this winch 29,
The starting motor of the elevating device 10, the step plate vertical cylinders 17, 17, and the conductive plate undulating cylinder 20 have a common hydraulic pressure source, and can be switched by a remote device using a remote controller (not shown).

When the vehicle M rides on the bed, preparation is performed, and the lifting device 10 at the front of the vehicle 1A with the lifting device is activated, and the front is raised. Thereby, the lower end of the rear other portion of the inclined frame 13B approaches the ground. In addition, step board 16
Is lowered by the contraction of the cylinders 17 and 17 until the surface plate 16B comes into contact with the upper surface of the inclined underframe 13B, and the cylinder 20 is contracted and the conductive plate 18 is turned from the standing state until the end thereof contacts the ground. Is done.

After such preparation, the vehicle M rides on the carrier while sequentially riding on the guide plate 18 and the step plate 16 from the ground. With this riding, the lower end of the rear end of the inclined frame 13B comes into contact with the ground.

In this riding process, the load of the vehicle M applied to the guide plate 18 acts on the inclined frame 13B via the rotation shaft 21 of the guide plate 18. The load applied to the inclined underframe 13B is
1B and the main body frame 11, and as a result, the load is dispersed. Further, the load of the vehicle M applied to the step plate 16 acts on the lowering frame 11 'on the lower surface of the frame 16A, and finally acts on the entire frame.

Further, in the case where the target loading vehicle has a low minimum ground clearance, for example, an asphalt finisher, one of the front and rear wheels rides on the cargo bed main body, as can be estimated from the riding process shown in FIGS. If the wheels of the asphalt finisher ride on the step plate 16, the step plate 16 is raised without erecting the guide plate 52 to be the same as the height of the bed, so that the lower surface of the body of the asphalt finisher is the same as the bed body. The collision with the corner of the connection with the step plate 16 can be prevented. In addition, when the minimum ground clearance of the target loaded vehicle is not low, it is possible to ride on the vehicle as it is without performing the operation of raising the step plate 16 as described above.

If the minimum ground clearance of the target vehicle is low,
As shown in FIG. 12, when the step plate 16 is raised to separate the inclined frame 13B and the step plate 16 from each other, and another long conductive plate 30 is laid between the inclined frame 13B and the ground, the conductive plate 18 To the cargo bed main body can be completely flat, and the vehicle M can be loaded as it is.

In addition, when the vehicle is not suitable for self-propelled driving or when an assisting force is required for riding, the hook 28a can be hooked on the front portion of the vehicle M and then turned by turning the winch 29.

In the present invention, the undulation of the conductive plate 18 is a cylinder.
Instead of using 20, it may be made to undulate by input.

〔The invention's effect〕

As described above, according to the present invention, mainly the following effects can be obtained.

(1) Since both the step plate and the conductive plate are provided, the conductive plate has a length of 700 to 1200 mm, particularly 800 to 1000 mm.
mm so that the danger of running or danger to the following vehicle can be eliminated. Further, as a result of the conductive plate being shortened, the weight of the conductive plate is reduced, so that the load capacity can be increased.

(2) Since the guide plate is attached to the vehicle with the lifting device in advance, it is particularly possible to automate the undulation of the guide plate,
Ride setup of the vehicle can be performed quickly.

(3) Since the guide plate is supported by the rear end of the main frame and is operated independently of the step plate, the minimum ground clearance of the target loading vehicle is low and it is long in the front-rear direction. Even in this case, it is possible to ride up without contacting the corner of the connection between the floor plate and the step board.

(4) The load can be dispersed throughout even a heavy heavy machine, and the durability is excellent.

(5) In addition, when the vehicle must travel in a state in which the step board must be held in a horizontal state due to regulations, the vibration of the step board caused by the vibration of the automobile may be caused by the load acting on the step board rotating cylinder not including the guide plate. It is not big because it is only. Moreover, since the guide plate is cut off from the step plate and is attached to the inclined underframe, the vibration of the guide plate is not affected by slight expansion and contraction of the step plate rotation cylinder. Therefore, the safety of the conductive plate is excellent.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view of a bed portion, FIG. 3 is a plan view of a rear portion of the bed, FIG. 4 is a front view thereof, FIG. 5 and FIG. Is a rear perspective view of the underframe, FIG. 7 is a rear perspective view of the underframe, FIG. 8 is a perspective view of the step plate viewed from below, FIG. 9 is a schematic perspective view of the frame, and FIG. FIG. 11 is a front view of a conductive plate, FIG. 12 is a schematic view illustrating another conductive plate, and FIGS. 13 to 19 are schematic explanatory views of a conventional example. 1A ... car with lifting device, 10 ... lifting device, 11 ... body frame, 11B ... sub-frame, 11 '... cut-down frame, 13 ... underframe, 13A ... body underframe, 13B ... inclined Underframe, 15 ... Rotating axis, 16 ... Step board, 16A ... Frame, 16B ... Surface board, 17 ... Cylinder, 18 ... Conducting board, 1
8A …… Auxiliary guide plate, 20 …… Cylinder, 21 …… Rotary axis, 24
… Fixing pin, 29… Winch, 30… Auxiliary conductive plate.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 63-16245 (JP, U) Japanese Utility Model Sho 55-125840 (JP, U) Japanese Utility Model Sho 54-112213 (JP, U) Japanese Utility Model Sho 62- 29946 (JP, U)

Claims (1)

(57) [Claims] 1. A vehicle with a lifting device having a front plate which is capable of inclining by raising the front portion when the lifting device provided on the front is operated, and having a guide plate of a transporting vehicle at the rear end of a frame. And an inclined base frame integrated with the frame and having a horizontal main body frame and a rearwardly downwardly sloped integrated with the main body frame, and a position between the rear end of the main body frame and the frame. A step plate rotatably supported between a tilted state in which the rear is placed on the tilted frame and a horizontal state connected to the main body frame as a support; a rear end of the tilted frame; A guide plate pivotally supported between a vertical state and a state in contact with the ground, a step plate rotating means for rotating the step plate, and a conductive plate undulating means for raising and lowering the conductive plate. The step plate rotating means and the guide plate undulating hand The step and the guide plate are configured to operate independently of each other with the step, and the rear end of the inclined frame is inclined with the operation of the elevating device so that the automobile is inclined, and when the target transporting vehicle runs up. The vehicle carrier according to claim 1, wherein the vehicle carrier can be installed on the ground.