JP2000142512A - Dismantling device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably remove a large-sized resin product such as a bumper, and instrument panel from a body, capable of realizing the reduction in the labor of removing work and the enhancement of the efficiency, and also to achieve the reduction in the cost of equipment. SOLUTION: A dismantling device for an automobile is made up of pulley stands 3, 4 arranged at least on the front and rear sides of a vehicle body B fixed to prescribed positions, and a traction wire 7 each one end of which is connected to recovery purposed parts IP, FB, RB is pulled by a crane C via pulleys 14 of the pulley stands 3, 4 for disassembling the automobile, so that the removal of various recovery purposed parts can be enabled, and the reduction in the labor of removing work and the enhancement in the efficiency can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dismantling apparatus used for removing a part from a vehicle body of an automobile, and more particularly to a dismantling apparatus for a vehicle suitable for removing a large resin part such as a bumper or an instrument panel. It is about.

[0002]

2. Description of the Related Art In recent years, in the dismantling of automobiles, the collection of many components for recycling has become mainstream, and in particular, the collection of resin parts has been regarded as important. When collecting resin parts, for large resin parts such as bumpers and instrument panels, use appropriate tools to manually connect connecting members such as bolts, nuts, and clips that connect the vehicle body to the parts. It was operated or destroyed by work and removed from the vehicle body.

In order to remove the bumper, a member that engages with the vehicle body, a member that engages with the bumper, and a drive mechanism that moves the two members closer to and away from each other are forcibly separated from the vehicle body. Device Such an apparatus is described, for example, in Japanese Patent Application Laid-Open No. 6-99320.

[0004]

However, in the disassembly of the conventional automobile as described above, when manual operation is performed, naturally, a great deal of labor is required, and it is difficult to increase the working efficiency. In addition, in the case of a dismantling device, there is a problem that it is a dedicated device for a specific part and that setting and the like are troublesome, and it has been a problem to solve these problems.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional problems, and is suitable for removing large resin parts such as a pan bar and an instrument panel from a vehicle body. It is an object of the present invention to provide an automobile dismantling apparatus capable of realizing reduction and improvement of efficiency and also capable of reducing equipment cost.

[0006]

According to a first aspect of the present invention, there is provided a dismantling apparatus for an automobile for removing a recovery target component from a vehicle body, the apparatus being provided at least on the front and rear sides of a vehicle body fixed at a predetermined position. A pulley stand for holding the pulley, wherein a pulling wire having one end connected to the collection target part is pulled by a crane through the pulley of the pulley stand. A disassembly device for removing the, a base on which the vehicle body is mounted, and vehicle body fixing means for fixing the vehicle body mounted on the base,
A pulley stand is provided at least on the front and rear sides of the vehicle body that holds the pulley and is mounted on the base, and a pulling wire provided at one end with a connecting means for connecting to the collecting target part, and connecting the connecting means to the collecting target part In a state where the tow wire is pulled by a crane through the pulley of the pulley stand,
According to a third aspect of the present invention, the vehicle body fixing means includes a holding member for pressing and holding the roof of the vehicle body placed on the base so as to be vertically movable. A pair of pulleys having a structure in which the pulley holding portions are provided at intervals, and the connecting means has a component locking portion at a tip thereof for a recovery target component and rotatably connects an intersecting intermediate portion. And a connecting wire for connecting the base ends of both arms and the tow wire. According to claim 6, the pulley integrally includes a plurality of body portions having different diameters coaxially. In addition, each body has a wire locking portion for locking the other end of the towing wire, and has a configuration in which one end is connected to a crane and a second towing wire is wound around the pulley. Solves conventional problems with the above configuration It is the means of the eye.

[0007] As the crane in the above configuration, various general cranes that raise and lower suspended hooks can be used. In addition, the tow wire is pulled by a crane via a pulley, and in this case, a configuration in which the tow wire is directly pulled by the crane, or another tow wire wound around the pulley is pulled by the crane. A configuration in which the towing wire connected to the collection target component is wound around a pulley can be adopted, and the latter is particularly preferable in the configuration of the sixth aspect. Furthermore, according to the fourth aspect, the pulley holding portions are provided at predetermined intervals in the vertical direction of the pulley stand, so that the pulleys can be provided in each holding portion, and the pulleys can be provided for each holding portion. May be configured to be detachably provided.

[0008]

In the vehicle dismantling apparatus according to the first aspect of the present invention, the pulley stand for holding the pulley is disposed at least on the front and rear sides of the vehicle body fixed at a predetermined position.
When the collection target parts are front and rear bumpers, each towing wire connected to the front and rear bumpers is led to the pulley stand on the front and rear sides of the vehicle body, and when the collection target parts are instrument panels, the instrument The towing wires connected to the panel are guided from inside the vehicle body to the pulley stand on the rear side of the vehicle body, and each towing wire is directly or indirectly pulled by a crane via the pulleys, so that front and rear bumpers and instrument panels can be used. Is forcibly removed from the vehicle body.

In the vehicle dismantling device according to the second aspect of the present invention, since the pulley stand is disposed at least on the front and rear sides of the vehicle body mounted on the base, the vehicle body mounted on the base is fixed by the vehicle body fixing means. When the collection target parts are front and rear bumpers, each towing wire connected to the front and rear bumpers is guided to the pulley stand on the front and rear side of the vehicle body, and when the collection target parts are instrument panels, ,
The towing wire connected to the instrument panel is guided from the inside of the vehicle to the pulley stand on the rear side of the vehicle, and each towing wire is pulled by a crane via the pulley to force the front and rear bumpers and instrument panel from the vehicle. Remove it.

In the vehicle disassembly apparatus according to the third aspect of the present invention, since the roof of the vehicle body mounted on the base is pressed and held by the holding body of the vehicle body fixing means, the vehicle body fixing means hinders the removal operation. There is no simple structure, and the entire vehicle body is sufficiently fixed.

In the vehicle dismantling apparatus according to the fourth aspect of the present invention, since the pulley stand is provided with the pulley holding portions at predetermined intervals in the vertical direction, the pulleys are provided in each holding portion or the pulleys are provided in each holding portion. By detachably providing the pulley, the height of the pulley can be selected in accordance with the position of the collection target component and the like.

In the dismantling apparatus for an automobile according to a fifth aspect of the present invention, the collection target parts are sandwiched between the pair of arms of the connecting means, and the part locking portions at the tips of both arms are locked to the collection target parts. In this state, the proximal ends of both arms are towed by the towing wire via the connecting wire. At this time, since the pair of arms has the crossed intermediate portions rotatably connected, when the other ends of both are pulled by the connecting wire,
The tip ends rotate in a direction in which they approach each other, and the biting of the component locking portion with respect to the collection target component becomes stronger. Further, after the removal of the collection target component, the connecting means is detached from the collection target component only by rotating the pair of arms.

[0013] In the vehicle dismantling apparatus according to claim 6 of the present invention, the other end of the towing wire connected to the recovery target component is locked to the wire locking portion of one of the trunks of the pulley. A second towing wire is wound around one of the trunks of the pulley, and the second towing wire is towed by a crane to remove the recovery target component from the vehicle body. At this time, in the dismantling device, since the pulley has a plurality of body portions having different diameters coaxially and integrally provided, by selecting the body portion around which each tow wire is wound, the towing speed of the crane is constant. On the other hand, the speed at which the parts to be collected are pulled is different.

[0014]

According to the dismantling apparatus for a motor vehicle according to the first aspect of the present invention, the use of the pulley stand for holding the pulley, the towing wire and the crane limits the removal of specific parts. It is possible to remove various parts for collection, and it is particularly suitable for removing large resin parts such as pan bars and instrument panels. Can be performed efficiently in a short time. In addition to being a dedicated device for specific parts as described above, various cranes used in factories and the like can be used as they are, so that the structure is compact and extremely simple, and equipment costs and disassembly costs are reduced. Can be reduced. Furthermore, since the pulley stand is arranged at least on the front and rear sides of the vehicle body, for example, a plurality of towing wires led in the front and rear direction of the vehicle body are aggregated in one pulley stand, and these are simultaneously pulled by a crane. It is possible to remove a plurality of collection target parts, and it is possible to further increase the efficiency of the removal operation.

According to the vehicle dismantling device of the second aspect of the present invention, the use of the base, the vehicle body fixing means, the pulley stand for holding the pulley, the towing wire and the crane enables removal of specific parts. Without being limited, it is possible to cope with the removal of various collection-purpose parts, and it is particularly suitable for removing large resin parts such as pan bars and instrument panels. Removal work can be performed efficiently with less labor. In addition to being a dedicated device for specific parts as described above, various cranes used in factories and the like can be used as they are, so that the structure is compact and extremely simple, and equipment costs and disassembly costs are reduced. Can be reduced. Furthermore, since the pulley stand is arranged at least on the front and rear sides of the vehicle body, for example, a plurality of towing wires led in the front and rear direction of the vehicle body are aggregated in one pulley stand, and these are simultaneously pulled by a crane. It is possible to remove a plurality of collection target parts, and it is possible to further increase the efficiency of the removal operation.

According to the dismantling apparatus for an automobile according to the third aspect of the present invention, the same effect as that of the second aspect can be obtained, and the vehicle body fixing means provided with the holding body for pressing and holding the roof of the vehicle body is provided. By adopting, the fixing of the vehicle body can be automated, the removing operation can be easily performed without the vehicle fixing means being in the way, and the entire vehicle body can be sufficiently fixed with a simple structure. .

According to the vehicle dismantling apparatus of the fourth aspect of the present invention, the same effects as those of the second and third aspects can be obtained, and the pulley holding portions are provided at predetermined intervals in the vertical direction. By adopting a pulley stand, by installing a plurality of pulleys in the vertical direction and changing the holding position of the pulleys in the vertical direction, the height of the pulley is selected according to the position of the collection target parts, etc. The towing angle can be set to a value suitable for removing the recovery target component, and the recovery target component can be more reliably removed.

According to the dismantling apparatus for an automobile according to the fifth aspect of the present invention, the same effects as those of the second to fourth aspects can be obtained, and the connecting means having a pair of arms and a connecting wire is employed. As a result, not only is the structure simple, but also the toughness of the locking portions of both arms with respect to the collection target component with towing is enhanced, and the collection target component can be more reliably removed. Also, it is possible to extremely easily remove the connecting means from the collection target component, which can contribute to reduction of labor and further improvement of work efficiency.

According to the dismantling apparatus for an automobile according to the sixth aspect of the present invention, the same effects as those of the second to fifth aspects can be obtained, and a plurality of body portions having different diameters are integrally coaxially formed. By adopting a pulley equipped with, by selecting the trunk when winding the towing wire connected to the recovery target part and the second towing wire connected to the crane around the pulley, without changing the towing speed of the crane, The speed at which the collection target parts are pulled can be varied. That is, by appropriately selecting the towing speed in accordance with the shape and strength of the recovery target component or the state of attachment of the recovery target component to the vehicle body, it is possible to reliably perform the removal suitable for the recovery target component.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an automobile dismantling apparatus according to the present invention.

The dismantling apparatus for a vehicle shown in FIGS. 1 to 3 is for removing a recovery target component from a vehicle body B of the vehicle. In this embodiment, an instrument panel IP which is a recovery target component and front and rear bumpers are mainly used. The case where FB and RB are removed is shown. The vehicle body B is carried into the dismantling device with the wheels removed.

The dismantling apparatus for an automobile includes a base 1 on which a vehicle body B is mounted in a fixed direction, a vehicle body fixing means 2 for fixing the vehicle body B mounted on the base 1, and a mounting body 1 on the base 1. And two pulley stands 3 and 4 arranged on the front and rear sides of the vehicle body B, and a towing wire 7 provided with a connecting means 5 (6) for connecting to a recovery target part at one end, and using a crane C. Has become. The crane C is, for example, a hoist crane installed above the dismantling device, and in the drawing, a part of a hanging wire and a hook at a lower end thereof are shown.

The base 1 is a combination of a plurality of H-section steels and plates, and carries in and out a vehicle body B held horizontally by a transportation means such as a forklift as shown by arrows in FIGS. So that a gap S for entering the conveying means can be formed below the vehicle body B. In addition, as a transportation means, besides a forklift,
There are conveyors for dismantling lines arranged side by side on the base 1.

The vehicle body fixing means 2 is provided on the side opposite to the loading / unloading side of the vehicle body B with respect to the base 1, and is capable of moving up and down with respect to the support post 8 fixed to the floor and the support post 8. An elevating post 9 is provided. The lifting post 9 is composed of both posts 8,
It is driven up and down by the driving means housed in 9 and can be stopped at any position. This driving means operates manually or automatically. In addition, lifting post 9
A beam 10 projecting above the base 1 is provided at the upper end of the base 1, and a vehicle body B mounted on the base 1 is provided at a tip end of the beam 10 via a cylinder 11 driven forward and backward.
A holding body 12 for pressing and holding the roof is provided. The holding body 12 has a plate shape as shown in FIG. 4, and four rubber pads 13 are attached to the lower surface of the holding body 12 to increase the holding force, and are driven up and down by the cylinder 11. .

For example, the vehicle body fixing means 2 moves the elevating post 9 and the holding body 12 upward before carrying in the vehicle body B, places the vehicle body B on the base 1, and varies depending on the vehicle type. The lifting post 9 is lowered according to the height of the vehicle body B, and then the holding body 12 is lowered to press and hold the roof of the vehicle body B. In the illustrated example, the vehicle body fixing means 2
A partition plate 24 for partitioning from other areas is provided at the back.

Each of the pulley stands 3 and 4 is firmly installed on the floor, and has holding portions 15 for pulleys 14 at predetermined intervals in the vertical direction. In the case of this embodiment, the front pulley stand 3 on the left side in FIG. 1 is provided with four holding portions 15, and the top and bottom holding portions 15 are provided with pulleys 14, while The pulley stand 4 on the side is provided with five holding portions 15, and the pulleys 14 are provided on the uppermost, lowermost, and central holding portions 15. These pulleys 14 can be attached to and detached from each holding part 15.

The connecting means provided at one end of the towing wire 7 includes a connecting means 5 corresponding to the instrument panel IP as shown in FIG. 6A and a connecting means 5 as shown in FIG. There are connecting means 6 corresponding to the bumpers FB and RB.

The connecting means 5 for the instrument panel IP includes a pair of arms 5A, 5B and both arms 5A, 5B.
And two connecting wires 5C for connecting the towing wire 7 and
5C. One of the arms 5A has a shape bent at substantially 90 degrees, and the other arm 5B has a curved shape. Each of the arms 5A, 5B has a component locking portion 16, 16 on the upper and lower sides of the instrument panel IP at the distal end, and has a ring-shaped connecting portion 17, 17 on the proximal end. Are provided, and the intermediate portions are crossed with each other, and the crossed portions are rotatably connected by a shaft 18.

As shown in FIG. 6C, the component locking portion 16 is formed of a plate fixed to the tip of the arm 5A (5B) by welding. As shown in FIG. 6D, the shaft body 18 includes a bolt 18a, a nut 18b, and a washer 1.
8c. Also, the other arm 5B is
The penetrating portion of the shaft 18 is an elongated hole 19 formed in the longitudinal direction of the arm. That is, the bolt 18a of the shaft body 18
When the nut 18b is loosened, the other arm 5B can be moved by the length of the elongated hole 19 with respect to the one arm 5A, whereby both arms 5A, 5B can be moved according to the vertical dimension of the instrument panel IP. The degree of opening can be adjusted.

The connecting wires 5C, 5C are provided at one end thereof with hooks 20, 20 which are hooked on the connecting portions 17, 17 of the arms 5A, 5B, respectively. It is tied to a ring 21. The connecting ring 21 has a hook 22 provided at one end of the towing wire 7.
Is locked. Each hook 20 and 22 is provided with an elastically-prevented claw 23 which is elastically held as shown in the circle of the dashed line in FIG.

The connecting means 6 for the bumpers FB and RB is slightly different in form from that for the instrument panel, but has the same basic structure and function. Arms 6A, 6B,
A connecting wire 6C and a shaft 18 are provided, and an elongated hole 19 is formed in the other arm 6B.

In the dismantling apparatus for an automobile having the above structure, the vehicle body B is mounted on the base 1 and then the roof of the vehicle body B is pressed and held by the holding body 12 of the vehicle body fixing means 2.
Is fixed. Thus, in the dismantling apparatus, the entire vehicle body B is fixed with a sufficient force by the vehicle body fixing means 2 having a simple structure. Further, since the roof of the vehicle body B is pressed and held, the vehicle body fixing means 2 does not hinder the subsequent work of setting the connecting means 5 and removing parts.

Next, in the disassembling apparatus, the component locking portions 16 of the arms 5A and 5B of the connecting means 5 are hooked on the upper side (the outlet of the defroster) and the lower side of the instrument panel IP. 5A, 5B each connecting wire 5
C and the towing wire 7 are hooked, and the towing wire 7 is guided from the inside of the vehicle body B to the pulley stand 4 on the rear side. Then, the towing wire 7 is hung on the pulley 14 of the selected height, and the other end is hung on the crane C above.

Similarly, the front and rear bumpers FB,
Each connecting means 6 is connected to the RB, and each pulling wire 7 is led out to the front and rear pulley stands 3 and 4 side, and each pulley 1
The other end of each towing wire 7 is hooked on the crane C via the wire 4. In addition, the order of attaching the connecting means 5 and 6 and arranging the towing wire 7 is appropriately determined.

After the setting is completed as described above, each of the cranes C is driven upward to pull the to-be-collected parts through the respective towing wires 7 and the respective connecting means 5 and 6, and the instrument The panel IP and the front and rear bumpers FB and RB are forcibly removed from the vehicle body B.

At this time, in the disassembling apparatus, a pair of arms 5A, 5B, 6A, 6B rotatably connecting the intersecting intermediate portions, and connecting wires 5C, 6C are used as connecting means 5, 6. Connection wire 5C, 6C
When the other ends of the arms 5A, 5B, 6A, 6B are pulled, the arms 5A, 5B, 6A, 6B rotate in a direction in which the tips of the arms approach each other. As a result, the engagement of the component locking portions 16 with the instrument panel IP and the front and rear bumpers FB and RB becomes stronger, and the removal is made more reliable. The connecting means 5 and 6 are connected to the instrument panel IP and the front and rear bumpers FB and R.
After removing B, a pair of arms 5A, 5B, 6A,
6B, each collection target component (IP, F
B, RB).

As described above, the vehicle dismantling apparatus described in the above embodiment is particularly suitable for removing large resin parts such as the instrument panel IP and the front and rear pan bars FB and RB from the vehicle body B. In addition, these collection target parts can be efficiently removed with little labor. As the crane C, various types of cranes installed in factories and the like can be used as they are. Further, in the dismantling device, since the pulley stands 3 and 4 are provided with the pulley holding portions 15 at predetermined intervals in the vertical direction, a plurality of pulleys 14 can be attached to and detached from the selected holding portion 15 as in the above embodiment. Or the pulleys 14 are provided on all the holding portions 15, so that the height of the pulleys 14 can be selected in accordance with the position of the collection target component.

FIG. 5 is a view showing another embodiment of the automobile dismantling apparatus according to the present invention, particularly showing another example of a pulley. The illustrated pulley 24 integrally includes a plurality of body portions 26A and 26B having different diameters coaxially on a shaft portion 25. In this embodiment, the body portions 26A and 26B are 2
However, the number is not particularly limited. Each torso 26
A and 26B are provided with wire locking portions 27 and 27 for locking the other end of the towing wire 7. One end of the towing wire 7 is connected to a recovery target component (not shown).

The pulley 24 is provided with a rotary handle 29 for manual operation when performing a wire locking operation or the like on a disk 28 provided integrally with the shaft portion 25.
A stopper 30 is provided which abuts the stand side during setup to prevent the pulley 24 from rotating inadvertently. The dismantling device of this embodiment has a second towing wire 3 connected at one end to the crane C and wound around the pulley 24.
7 is provided.

In the dismantling apparatus for a vehicle having the above-described configuration, the other end of the towing wire 7 connected to the recovery target component is connected to the wire locking portion 27 of one of the trunks 26A, 26B of the pulley 24. Stop, and a second tow wire 37 is also attached to one of the trunks 26A, 26B of the pulley 24.
Is wound, and the second towing wire 37 is towed by the crane C to remove the recovery target component from the vehicle body.
That is, in the dismantling device, by selecting the trunk portions 26A and 26B around which the towing wires 7 and 37 are wound,
While the traction speed of the crane C is constant, the traction speed of the recovery target component is different. Therefore, by appropriately selecting the towing speed according to the state of attachment of the recovery target component, the removal suitable for the recovery target component is reliably performed.

In the above embodiment, the case where one connecting means 5, 6 is connected to the instrument panel IP and the front and rear bumpers FB, RB is shown.
As shown in (e) and (f), two connecting means 5, 6 may be used respectively. In addition, one pulley stand 3, 4 is arranged before and after the vehicle body B, and a plurality of pulleys 14 are arranged vertically in each pulley stand 3, 4, but a plurality of pulley stands are juxtaposed. Or
A plurality of pulleys can be arranged laterally in one pulley stand, and further, the pulley stand can be arranged beside the vehicle body. Further, the collection target components to be removed are not limited to the instrument panel IP and the front and rear bumpers FB and RB. For example, the harness can be removed.

In the above embodiment, the case where the towing wires 7, 37 led to the respective pulley stands 3, 4 are towed by the respective cranes C is shown. Is arranged, the respective towing wires 7, 37 may be gathered in one pulley stand, and these towing wires 7, 37 may be towed by one crane C.

[Brief description of the drawings]

FIG. 1 is a front view of a vehicle disassembly apparatus according to an embodiment of the present invention, as viewed from a vehicle loading / unloading side.

FIG. 2 is a plan view of the vehicle dismantling device shown in FIG.

FIG. 3 is a side view of the vehicle dismantling device shown in FIG. 1;

FIG. 4 is a bottom view of the holding body in the vehicle body fixing means.

FIG. 5 is an explanatory view showing a pulley in another embodiment of the vehicle dismantling device according to the present invention.

6A is a side view of the connecting means for the instrument panel shown in FIG. 1, FIG. 6B is a side view of the connecting means for the front and rear bumpers, FIG. FIG. 7 is an explanatory view (d) of a shaft body in a portion, a perspective view (e) showing a connecting point of connecting means to an instrument panel, and a perspective view (f) showing a connecting point of connecting means to front and rear bumpers.

[Explanation of symbols]

B Body C Crane FB Front bumper (recovery target part) IP Instrument panel (recovery target part) RB Rear bumper (recovery target part) 1 Base 2 Body fixing means 3 4 Pulley stand 5 6 Connecting means 5A 5B 6A 6B Arm 5C 6C Connection wire 7 Tow wire 12 Holder 14 24 Pulley 15 Holder 16 Parts lock 26A 26B Body 27 Wire lock 37 Second tow wire

Claims (6)

[Claims] 1. A dismantling device for removing a recovery target part from a vehicle body of an automobile, wherein a pulley stand for holding a pulley is disposed at least on front and rear sides of the vehicle body fixed at a predetermined position,
A dismantling device for a motor vehicle, wherein a tow wire having one end connected to a recovery target part is pulled by a crane through a pulley of a pulley stand. 2. A disassembly apparatus for removing a recovery target component from a vehicle body of an automobile, comprising: a base on which the vehicle body is mounted; vehicle body fixing means for fixing the vehicle body mounted on the base; A pulley stand arranged at least on the front and rear sides of the vehicle body mounted on the table, a towing wire provided with a connecting means to the collection target part at one end, and a state in which the connecting means is connected to the collection target part, towing An automobile dismantling device characterized in that a wire for use is pulled by a crane through a pulley of a pulley stand. 3. The dismantling device for an automobile according to claim 2, wherein the vehicle body fixing means includes a vertically movable holding member for pressing and holding a roof of the vehicle body mounted on the base. 4. The pulley stand is provided with pulley holding portions at predetermined intervals in a vertical direction.
Or the dismantling device for an automobile according to 3. 5. A pair of arms having a part locking portion to a recovery target component at a distal end thereof, and a pair of arms rotatably connecting an intersecting intermediate portion, a base end of both arms, and a tow wire. The vehicle disassembly device according to any one of claims 2 to 4, further comprising a connection wire for connecting the vehicle and the vehicle. 6. A pulley is provided with a plurality of body portions having different diameters coaxially and integrally, and each body portion is provided with a wire locking portion for locking the other end of the towing wire. The dismantling apparatus for a motor vehicle according to any one of claims 2 to 5, further comprising a second tow wire connected to the crane and wound around the pulley.