JP2000203331A - Wrecker truck and method for hauling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure traction without calling for a large wrecker truck even if a vehicle to be hauled is a heavy duty vehicle like a truck and the like. SOLUTION: A wheels-mounting bed 13 and an auxiliary carriage 18 are demountably installed on a wheel lift 7 at its extremity, respectively. The front wheels of a vehicle V to be hauled are mounted on the wheels-mounting bed 13 installed on the wheel lift 7 at its extremity when the vehicle V to be hauled is a comparatively lightweight ordinary-sized motor vehicle and its load is within the limit of the lifting capability inherent in the wheel lift 7. The vehicle V to be hauled is hauled by elevating the wheel lift 7 and in a state in which the wheels-mounting bed 13 is floated from ground 17. The auxiliary carriage 18 is replaced with the wheels-mounting bed 13 to install the wheels-mounting bed 13 on the wheel lift 7 at its extremity; the front wheels v1 of the vehicle V to be hauled is mounted on the auxiliary carriage 18; the rear wheels of the vehicle V to be hauled are grounded to haul the vehicle V to be hauled when the vehicle V to be hauled is a heavy duty vehicle like a truck and the like and its load exceeds the limit of the lifting capability inherent in the wheel lift 7 due to heavyweight inherent in the heavy duty vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tow truck and a method for towing a vehicle, and more particularly to a measure for towing work.

[0002]

2. Description of the Related Art Generally, a tow truck is provided with a wheel lift that is rotatable in a horizontal plane, and a wheel mounting table is attached to the tip of the wheel lift. Accident car,
When towing a towed vehicle such as a malfunctioning vehicle or a vehicle parked illegally, place the front wheel or the rear wheel of the towed vehicle on the wheel mounting table, move the wheel lift up and move the wheel mounting table from the ground. The towed vehicle is towed in a raised state.

[0003] A tow truck is always equipped with an auxiliary bogie called a dolly. If the towed vehicle is a four-wheel drive vehicle or an accident vehicle whose wheels cannot rotate, the towed vehicle has a front wheel (or a rear wheel). Wheel) on the wheel mounting table as described above, the rear wheel (or front wheel) of the towed vehicle is mounted on the auxiliary trolley, and the wheel lift is moved upward to lift the wheel mounting table off the ground. The vehicle is towed (see, for example, Japanese Utility Model Laid-Open No. 61-87139).

[0004]

By the way, when the wheel mounting table on which the towed vehicle wheels are mounted is lifted off the ground by a wheel lift as described above, the load of the towed vehicle acts on the rear part of the body of the tow truck. If the towed vehicle is relatively light and the load is within the range of the lifting capacity of the wheel lift, the load on the towed vehicle acting on the rear of the body of the tow truck is not very large. It does not lift and does not hinder traction,
If the towed vehicle is heavy, such as a truck, and its load exceeds the lifting capacity of the wheel lift, the load on the towed vehicle acting on the rear of the body of the tow truck will be very large. However, the front wheels of the tow truck are lifted up, and the steering of the front wheels cannot be performed, so that the vehicle cannot be towed. Further, even if not so much, the front wheels of the tow truck tend to rise, so that the running stability deteriorates, and driving in this state is very dangerous. By the way,
According to laws and regulations, it is impossible to tow when the load factor of the front wheel of a tow truck is 20% or less.

[0005] In such a case, it is necessary to contact a JAF (Japan Automobile Federation) member store to have a substitute large tow truck called, but to stay there until a large tow truck comes. It is necessary to wait, and the traction workability is significantly deteriorated. In particular, an accident vehicle or a broken vehicle may cause traffic jams or accidents on the main road, and it is necessary to take prompt measures to avoid this.

[0006] The present invention has been made in view of such a point, and an object of the present invention is to call a large tow truck even when the towed vehicle is a heavy heavy vehicle such as a truck. To be able to tow.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is characterized in that an auxiliary trolley always provided in a tow truck is effectively used.

[0008] Specifically, the present invention is directed to a tow truck and a vehicle towing method, and has taken the following solutions.

That is, the invention according to claims 1 to 5 is
It relates to the former tow truck, comprising a wheel lift and an auxiliary bogie that has a wheel mounting table at the tip and is rotatable in a horizontal plane, and the left and right sides of one end side of the towed vehicle in the vehicle front-rear direction on the wheel mounting table. Place the wheels, or put the left and right wheels on one end side of the towed vehicle in the vehicle longitudinal direction on the wheel mounting table, and put the left and right wheels on the other end of the towed vehicle in the longitudinal direction of the towed vehicle on the auxiliary truck. It is assumed that a tow truck is configured to tow a towed vehicle in a state where a wheel lift is moved upward to lift a wheel mounting table from the ground. Among them, the invention according to claim 1, wherein the wheel mounting table and the auxiliary vehicle are each detachably attached to the tip of the wheel lift, and when towing the towed vehicle with the auxiliary vehicle attached to the tip of the wheel lift, On the auxiliary trolley,
The left and right wheels at one end of the towed vehicle in the longitudinal direction of the vehicle are mounted, and the auxiliary bogie and the left and right wheels at the other end of the towed vehicle in the longitudinal direction of the vehicle are both grounded. .

A second aspect of the present invention is characterized in that, in the first aspect of the present invention, the auxiliary bogie is configured to be detachably attached to the front end of the wheel lift via an attachment.

According to a third aspect of the present invention, in the second aspect of the present invention, the attachment is a separate part separated and independent from the wheel lift and the auxiliary trolley.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the attachment is preliminarily integrated with one of the wheel lift and the auxiliary trolley.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the attachment is connected to the auxiliary carriage so as to be rotatable up and down. It is characterized by the following.

[0014] The invention according to claim 6 relates to the latter vehicle towing method, in which the wheel mounting table and the auxiliary vehicle are detachably mounted on the tip of a wheel lift rotatable in a horizontal plane. It is assumed that a vehicle towing vehicle is towed. The point is that when the load of the towed vehicle is within the range of the lifting capacity of the wheel lift, the wheel mounting table is attached to the tip of the wheel lift, and the wheel mounting table is mounted on the wheel mounting table at one end of the towed vehicle in the longitudinal direction of the vehicle. Or put the left and right wheels on one end side of the towed vehicle in the vehicle longitudinal direction on the wheel mounting table, and put the left and right wheels on the other end of the towed vehicle in the longitudinal direction of the towed vehicle on the auxiliary truck, The towed vehicle is towed in a state where the wheel mounting table is lifted off the ground by moving the wheel lift upward, while the load of the towed vehicle exceeds the range of the lifting capacity of the wheel lift, Attach the auxiliary trolley to the tip of the wheel lift, place the left and right wheels on one side in the vehicle longitudinal direction of the towed vehicle on the auxiliary trolley, and ground the auxiliary trolley without moving the wheel lift up Together, characterized in that pulling the towed vehicle in a state of being grounded the left and right wheels of the vehicle longitudinal direction end side of the tractor.

With the above arrangement, according to the first to sixth aspects of the present invention, when the towed vehicle is a normal vehicle whose weight is within the range of the lifting capacity of the wheel lift,
Left and right wheels (for example, front wheels) at one end in the vehicle longitudinal direction of the towed vehicle are mounted on the wheel mounting table at the tip of the wheel lift, and the wheel mounting table is lifted off the ground by the upward movement of the wheel lift. Is towed by a tow truck.

As described above, even when the towed vehicle is a relatively light-weight vehicle and its load is within the range of the lifting capability of the wheel lift, the towed vehicle is a four-wheel drive vehicle or a wheel. In the case of a non-rotatable accident vehicle, the auxiliary bogie is lowered from the tow truck, and the left and right wheels (for example, front wheels) at one end in the vehicle longitudinal direction of the towed vehicle are mounted on the wheel mounting table at the tip of the wheel lift. The left and right wheels (for example, rear wheels) at the other end of the towing vehicle in the longitudinal direction of the vehicle are mounted on the auxiliary vehicle, and the wheel mounting table is lifted off the ground by the upward movement of the wheel lift. Towed.

On the other hand, if the towed vehicle is a heavy vehicle such as a truck and the load exceeds the range of the lifting capacity of the wheel lift, the wheel mounting table is removed from the tip of the wheel lift and replaced. An auxiliary bogie is attached to the tip of the wheel lift, and left and right wheels (for example, front wheels) at one end in the vehicle longitudinal direction of the towed vehicle are mounted on the replaced auxiliary bogie. In this case, the wheel lift is moved upward. Instead, the auxiliary truck is grounded, and the left and right wheels (for example, rear wheels) at the other end in the vehicle longitudinal direction of the towed vehicle are grounded. In this state, the towed vehicle is towed by the tow truck.

Therefore, the load of a towed vehicle that is heavy, such as a truck, and whose load exceeds the range of the lifting capability of the wheel lift, is received by the grounded auxiliary bogie, and acts on the rear part of the body of the tow truck. Therefore, the situation in which the front wheels of the tow truck do not lift and the steering of the front wheels does not work or the running stability is deteriorated is avoided, and the towed vehicle that normally cannot be towed beyond the towability of the tow truck is reliably and safely Towed by That is, the vehicle type width of the vehicle to be towed is expanded.

Further, since the auxiliary truck normally provided in the tow truck is used to cope with the towing of the four-wheel drive vehicle or the like as described above, there is no need to call a substitute large tow truck, and there is no time loss during waiting. The towing work is performed quickly, and congestion on the main road and the occurrence of accidents are prevented.

According to the second aspect of the present invention, since the attaching and detaching operation of the auxiliary trolley with respect to the wheel lift is performed through the attachment, it is only necessary to mount the attachment on the tow truck, and the towed vehicle which cannot be towed can be used. For this reason, it is not necessary to separately add a large-scale device or make a major modification, so that a rise in costs can be avoided.

Further, since the auxiliary trolley is attached to the wheel lift, even if the tow truck turns while traveling,
The turning operation of the wheel lift in the horizontal plane follows the turning operation of the tow truck and turns smoothly, and does not hinder towing travel.

According to the third aspect of the invention, when towing,
The attachment order of the attachments, that is, which one of the wheel lift and the auxiliary trolley, which is the attachment partner, is preferentially mounted can be selected according to the situation at the site, and the workability of mounting the auxiliary trolley is improved.

According to the fourth aspect of the present invention, since the attachment is preliminarily integrated with one of the wheel lift and the auxiliary trolley to which the attachment is to be attached, the attachment mounting operation is simplified, and the towing operation is simplified. Efficiency is improved.

According to the fifth aspect of the present invention, the up-and-down movement of the towed vehicle during towing is absorbed by the vertically movable attachment, so that no excessive force is directly applied to the wheel lift or the auxiliary vehicle, and the towing running is stabilized. The performance is improved.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIGS. 1 to 7 show a tow truck W according to an embodiment of the present invention, of which FIG. 1 is an overall schematic configuration diagram. In FIG. 7, reference numeral 1 denotes a chassis of a tow truck W. In the middle of the upper surface of the chassis 1, an L-shaped winch boom 2 is mounted so as to be able to be raised and lowered by the expansion and contraction operation of an up-and-down cylinder 3. 2 is lowered by the contraction operation of the up-and-down cylinder 3, as shown in FIG. A winch 4 is installed near the base end of the winch boom 2, and a wire 6 having a hook 5 at its tip is stored in the winch 4 so that the wire 6 can be sent out and rewound.
1 (hereinafter referred to as the front wheel and the rear wheel, the same reference numerals will be used), and when the towing work cannot be performed by the wheel lift 7, the hook 5 is hooked on the engaging portion of the towed vehicle V and The towing vehicle V is lifted.

At the tip of the winch boom 2, the base end of a wheel lift 7 is connected by a horizontal shaft 8, and the base end of the wheel lift 7 is connected to a lifting cylinder 9. In a state where the towing operation is not performed, the wheel lift 7 is vertically raised by the extension operation of the lifting cylinder 9, while, during the towing operation, the tip of the wheel lift 7 is moved by the contraction operation of the lifting cylinder 9 in FIG.
As shown in FIG.

FIGS. 1 (a) and 1 (b) and FIGS.
As shown in (b), the wheel lift 7 is connected to a first shaft 10 extending rearward of the vehicle body of the tow truck W, and is connected to the tip of the first shaft 10 so as to be able to move back and forth by the expansion and contraction operation of a fluid pressure cylinder (not shown). The second shaft 12 having a square cross section extending in the width direction is formed in a T-shape.
The shaft 12 is rotatable about a vertical axis 11 in a horizontal plane. Further, a pair of wheel mounting tables 13 are detachably attached to both ends of the second shaft 12 one by one. FIG. 2 (a) and FIG. 3 (a)
As shown in detail in detail, each wheel mounting table 13 has a support portion 14 having a triangular cross section for supporting and mounting the wheel v1 from the front.
And a support portion 15 made of an L-shaped pipe material having a square cross section and slidably fitted to the support portion 14 to support and mount the wheel v1 from behind. One of the supports (the left side in FIG. 2A) A mounting portion 16 having a square cross section is provided in parallel with the portion 14, and the tip of the second shaft 12 of the wheel lift 7 is fitted to the mounting portion 16.

As shown in FIGS. 1 (a) and 4 (a), as an example of the towing of the towed vehicle V, the left and right sides of one end of the towed vehicle V in the longitudinal direction of the vehicle body are mounted on the two wheel mounting tables 13 as described above. Is mounted on the front wheel v1, and the wheel lift 7 is
The two wheel mounting tables 13 are moved upward by the extension operation of
In this state, the left and right front wheels v1 are tied to the both wheel mounting tables 13 by a tying band (not shown), and the tow vehicle V is towed. That is, the wheel lift 7 is used in the case where the towed vehicle V is a relatively light vehicle and the load is within the range of the lifting capability of the wheel lift 7.

An auxiliary trolley 18 called a dolly is mounted on the tow truck W (see FIG. 7). As described above, even if the towed vehicle V is a relatively light-weight vehicle and the load is within the range of the lifting capability of the wheel lift 7, the auxiliary vehicle 18 can be driven by the four-wheel drive vehicle. If the vehicle or the wheel v1 is an accident vehicle that cannot rotate, the left and right rear wheels v
1 and the manner in which the front wheel v1 is mounted on the wheel mounting table 13 is the same as that described above. That is, as shown in FIG. 6, the left and right front wheels v <b> 1 at one end in the vehicle longitudinal direction of the towed vehicle V are mounted on the two wheel mounting tables 13, and the auxiliary vehicle 18 lowered from the tow truck W.
The left and right rear wheels v1 at the other end of the towed vehicle V in the vehicle longitudinal direction are mounted on the towed vehicle V, and the wheel lift 7 is moved upward by the extension operation of the up-and-down cylinder 3 to lift the two wheel mounting tables 13 from the ground 17. In this state, the left and right front wheels v1 are secured to the both wheel mounting tables 13 by the securing bands in the same manner as described above, and the tow vehicle V is towed.

As shown in FIGS. 1 (b), 2 (b), 4 (b) and 5 (b), the auxiliary bogie 18 has a square cross section extending parallel to the width direction of the tow truck W. A known jack 20 (detailed mechanism is omitted) is provided at both ends of both shafts 19.
The two shafts 19 are arranged on a base and connected on both sides. Each jack 20 has two wheels 21 rotatably attached thereto. The shafts 19 and the jacks 20 are configured to be separable, and are separated from each other when mounted on the tow truck W, so that they can be lowered from the tow truck W and assembled when used. 20a is a grip provided on each jack 20, and when each jack 20 is lowered from the tow truck W,
Each jack 20 is lifted by holding the grip 20a by hand.

The auxiliary carriage 18 is configured to be detachably attached to both ends of the second shaft 12 of the wheel lift 7 via attachments 22. FIG.
As shown in enlarged detail in FIG. 3B and FIG. 3B, the attachment 22 includes two plate members 23a arranged in parallel.
And a second arm 24 made of one plate member. One end of the second arm 24 is inserted between the two plate members 23a of the first arm 23 and As shown in a virtual line in FIG. 3 (b), they are connected rotatably in the vertical direction. A first bracket 26 made of a square pipe material having a square cross section is fixed to the other end of the first arm 23, and a second bracket made of a round pipe material having a circular cross section is fixed to the other end of the second arm 24. The two brackets 27 are fixed.

Attachment 22 configured as above
Is a separate part that is separate and independent from the wheel lift 7 and the auxiliary trolley 18.
When attaching the first arm 23 to the first bracket 26,
Is externally fitted to the tip of the second shaft 12 of the wheel lift 7 to fix the first arm 23 to the second shaft 12 by the respective cross-sectional shape. In this fixed state, the first arm 23 faces the rear of the body of the tow truck W. Protruding horizontally.
On the other hand, the second bracket 27 of the second arm 24 is externally fitted to the shaft 19 in front of the auxiliary carriage 18, and the shaft 19 is rotatable with respect to the second bracket 27 due to the respective cross-sectional shapes. Thus, the auxiliary carriage 18 is always kept horizontal to cope with changes in the road surface, and the attachment 22 is configured to be connected to the auxiliary carriage 18 so as to be rotatable up and down. In addition, the attachment 22 is mounted on the wheel lift 7 using a positioning tool (not shown) such as a locking pin or a ring-shaped stopper.
(Second shaft 12) and auxiliary cart 18 (shaft 1)
9) measures are taken to prevent lateral displacement.

The auxiliary truck 18 thus constructed is always mounted on the tow truck W in case the towed vehicle V is a four-wheel drive vehicle or an accident vehicle in which the wheels v1 cannot rotate, as described above. However, the present invention uses the auxiliary bogie 18 even in the case of a large vehicle in which the towed vehicle V is heavy such as a truck and the load exceeds the range of the lifting capacity of the wheel lift 7. The biggest feature is that you can do. That is, the auxiliary carriage 18 dropped from the tow truck W in place of the wheel mounting table 13 is attached to the tip of the second shaft 12 of the wheel lift 7 by the attachment 2.
2, and the left and right front wheels v1 at one end in the vehicle longitudinal direction of the towed vehicle V are mounted on the auxiliary bogie 18. In this case, the wheel lift 7 is not moved upward and the auxiliary bogie 18
And the left and right rear wheels 21 at the other end in the vehicle longitudinal direction of the towed vehicle V are grounded.
Is towed.

Next, the tow truck W configured as described above is used.
The vehicle towing method for towing the towed vehicle V will be described below.

<Tracting Example 1> This is a case where the towed vehicle V is a normal vehicle whose weight is relatively light and whose load is within the range of the lifting capacity of the wheel lift 7.

(1) The tow truck W is moved to the front of the towing vehicle V, and the lifting cylinder 9 is contracted to lower the wheel lift 7.

(2) The up / down cylinder 3 is contracted to lower the winch boom 2 and the tip of the wheel lift 7 (the second shaft 12) is grounded.

(3) The second shaft 12 of the wheel lift 7 and the supporting portions 14 attached to both ends of the second shaft 12 are advanced from the first shaft 10 to the rear of the vehicle body by the extension operation of the hydraulic cylinder, and the towed vehicle The support portion 14 is applied from the front of the left and right front wheels v1 of the vehicle V, and then the support portion 15 is fitted into the support portion 14 from behind the left and right front wheels v1 of the towed vehicle V, and the left and right front wheels of the towed vehicle V are inserted. The support part 15 is applied behind v1.

(4) The up-and-down cylinder 3 is extended to raise both wheel mounting tables 13 from the ground 17. At this time, if necessary, the position of the right and left front wheels v1 of the towed vehicle V is stably supported by moving the lifting cylinder 9 up and down to finely adjust the position of the wheel lift 7 while moving the wheel lift 7 up and down. As a result, the left and right front wheels v1 of the towed vehicle V are mounted on the two wheel mounting tables 1
3, the front of the vehicle body is lifted and rises from the ground 17, and the towed vehicle V assumes a posture inclined forward and upward (see FIGS. 1A and 4A).

(5) The left and right front wheels v1 of the towed vehicle V are fastened to the both wheel mounting tables 13 by fastening bands.

(6) The tow truck V is driven by driving the tow truck W.

<Tracting Example 2> Similarly, as described above, the towed vehicle V is a normal vehicle whose load is within the range of the lifting capacity of the wheel lift 7, but the four-wheel drive vehicle or the wheel v1 rotates. This is the case of a disabled accident car.

(1) The tow truck W is moved to the front of the towed vehicle V, and the lifting cylinder 9 is contracted to lower the wheel lift 7 (same as (1) of Towing Example 1).

(2) The up / down cylinder 3 is contracted to lower the winch boom 2 and the tip of the wheel lift 7 (the second shaft 12) is grounded (the same as (2) of the towing example 1 ...). ).

(3) The second shaft 12 of the wheel lift 7 and the supporting portions 14 attached to both ends of the second shaft 12 are advanced from the first shaft 10 to the rear of the vehicle body by the extension operation of the hydraulic cylinder, and the towed vehicle The support portion 14 is applied from the front of the left and right front wheels v1 of the vehicle V, and then the support portion 15 is fitted into the support portion 14 from behind the left and right front wheels v1 of the towed vehicle V, and the left and right front wheels of the towed vehicle V are inserted. The support portion 15 is applied to the rear of v1 (the same as (3) of Towing Example 1).

(4) The up-and-down cylinder 3 is extended to make the two wheel mounting tables 13 rise from the ground 17. At this time, if necessary, the position of the right and left front wheels v1 of the towed vehicle V is stably supported by moving the lifting cylinder 9 up and down to finely adjust the position of the wheel lift 7 while moving the wheel lift 7 up and down. As a result, the left and right front wheels v1 of the towed vehicle V are mounted on the two wheel mounting tables 1
3, the front of the vehicle body is lifted and lifted off the ground 17, and the towed vehicle V assumes a posture inclined forward and upward (see FIGS. 1A and 4A... In Example 1 of towing). Same as 4) ...).

(5) The auxiliary cart 18 (two shafts 1)
9 and two jacks 20 with wheels 21 are separated from the towed vehicle V, and the two shafts 19 extend in the vehicle width direction before and after the left and right rear wheels v1 of the towed vehicle V. So that the two jacks 20 are connected to both ends of both shafts 19 and are not separated by the stopper.

(6) The jack 20 is lifted to raise the two shafts 19. As a result, the right and left rear wheels v1 of the towed vehicle V are mounted on the two shafts 19, the rear portion of the vehicle body is lifted and lifted off the ground 17, and the towed vehicle V is in a horizontal posture (see FIG. 6). Note that the step (4) may be performed thereafter.

(7) The left and right front wheels v1 of the towed vehicle V are fastened to the both wheel mounting tables 13 by fastening bands (..
-Same as (5) of Towing Example 1).

(8) Tow the towed vehicle V by driving the tow truck W (... the same as (6) of towing example 1)
・).

<Tracting Example 3> This is a case of a large vehicle in which the towed vehicle V is heavy, such as a truck, and the load exceeds the range of the lifting capability of the wheel lift 7.

(1) The tow truck W is moved to the front of the towed vehicle V, and the lifting cylinder 9 is contracted to cause the wheel lift 7 to fall down (the same as (1) of the towing example 1 ...). .

(2) The up-and-down cylinder 3 is contracted to lower the winch boom 2 and the tip of the wheel lift 7 (the second shaft 12) is grounded (the same as (2) of the towing example 1 ...). ).

(3) The two left and right wheel mounting tables 13 are removed from both ends of the wheel lift 7 (second shaft 12).

(4) The auxiliary cart 18 (two shafts 1)
9 and two jacks 20 with wheels 21 are separated from the towed vehicle V, and the two shafts 19 are extended in the vehicle width direction before and after the left and right front wheels v1 of the towed vehicle V. Place in parallel to.

(5) First of two attachments 22
The bracket 26 is connected to the second shaft 12 of the wheel lift 7.
Then, the second bracket 27 is externally fitted to the shaft 19 in front of the auxiliary carriage 18 and is positioned by a positioning tool.

(6) The two jacks 20 are connected to both ends of both shafts 19, and the auxiliary carriage 18 is attached to both ends of the wheel lift 7 (second shaft 12) so as not to be detached by the stoppers.

(7) The jack 20 is lifted up to raise the two shafts 19. At this time, the up-and-down cylinder 3 is extended to rotate the tip of the wheel lift 7 (the second shaft 12) upward, and the attachment 22 follows the ascent operation of the shaft 19. As a result, the left and right front wheels v1 of the towed vehicle V are mounted on the two shafts 19 of the auxiliary bogie 18, the front part of the vehicle body is lifted up and lifted off the ground 17, and the towed vehicle V assumes a posture inclined forward and upward. (See FIG. 1B and FIG. 4B).

(8) Tow the towed vehicle V by driving the tow truck W (the same as (6) of the towing example 1)
・).

As described above, when the towed vehicle V is a heavy vehicle such as a truck and the load exceeds the range of the lifting capacity of the wheel lift 7, the auxiliary carriage 18 is replaced with the wheel mounting table 13. The tow truck V is mounted on the wheel lift 7 so that the load of the towed vehicle V is received by the grounded auxiliary truck 18 so as not to act on the rear portion of the body of the tow truck W. It is possible to avoid a situation or a situation in which running stability is deteriorated, and it is possible to reliably and safely tow a towed vehicle V that cannot normally be towed beyond the towing ability of the tow truck W. As a result, the vehicle type width of the vehicle to be towed can be expanded.

Further, since the auxiliary truck 18 always provided in the tow truck W is used in order to cope with towing of a four-wheel drive vehicle or the like, there is no need to call a substitute large tow truck W, and to eliminate the loss time during waiting. The towing operation can be performed quickly, and congestion on a main road and the occurrence of an accident can be prevented.

Further, the auxiliary carriage 18 is attached to the attachment 2
2 to be attached to or removed from the wheel lift 7 via the attachment 2
When the tow truck 2 is mounted on the tow truck W, it is not necessary to separately add a large-scale device or significantly modify the towed truck V that cannot be towed, thereby avoiding a rise in cost.

Since the auxiliary truck 18 is attached to the wheel lift 7, when the tow truck W turns while traveling,
The second shaft 12 of the wheel lift 7 is a vertical shaft 11
By turning around in the horizontal plane, the wheel lift 7 can smoothly turn following the turning operation of the tow truck W, so that the towing travel can be prevented.

In addition, since the attachment 22 is provided as a separate component that is separate and independent from the wheel lift 7 and the auxiliary trolley 18, the mounting order of the attachment 22, that is, either the wheel lift 7 or the auxiliary trolley 18, which is the attachment partner, during towing. It is possible to select whether to attach the front trolley first according to the situation at the site, and the auxiliary trolley 18 can be efficiently attached to the wheel lift 7.

Further, the second arm 24 of the attachment 22 is rotatable up and down around a horizontal axis 25, and the one shaft 19 of the auxiliary carriage 18 is attached to the second bracket 27 of the attachment 22. Even if the towed vehicle V moves up and down during towing travel, the up and down movement is absorbed by the two rotating portions of the attachment 22 so that the wheel lift 7 and the auxiliary truck 18 can rotate.
It is possible not to apply an excessive force directly to the vehicle, and it is possible to improve the traction running stability.

FIGS. 8A and 8B show a modification of the attachment 22. The attachment 2 of this modification is shown in FIGS.
2 has an arm 28 made of two plate members 28a arranged in parallel, a first bracket 29 made of a round pipe having a circular cross section is fixed to one end of this arm 28, and the other end is made to the other end. A second shaft 30, which is also made of a round pipe having a circular cross section, is fixed. The attachment 22 of the modified example configured as described above is also a separate component separated and independent from the wheel lift 7 and the auxiliary truck 18 as in the above-described case. The first bracket 29 is externally fitted to the tip of the second shaft 12 of the wheel lift 7, and the arm 28 is rotatable with respect to the second shaft 12 as shown by the phantom line in FIG. I have. On the other hand, the second bracket 30 of the arm 28 is externally fitted to the one shaft 19 of the auxiliary carriage 18 and the shaft 19 is rotatable with respect to the second bracket 30 by the respective cross-sectional shapes. It is the same as the above-described attachment 22 in that the auxiliary trolley 18 is always held horizontally to cope with road surface changes, and the attachment 22 is connected to the auxiliary trolley 18 so as to be rotatable up and down. It is configured as follows. This attachment 22 is also moved by the wheel lift 7 (the second shaft 1) using a positioning tool (not shown) such as a locking pin or a ring-shaped stopper.
2) and the auxiliary carriage 18 (shaft 19) are provided with measures for preventing lateral displacement. Therefore, the attachment 22 of this modified example can also provide the above-described effects.

It is to be noted that the attachment 22 is separately assembled as a separate component from the wheel lift 7 and the auxiliary carriage 18 as in the above two examples, and is also integrally assembled in advance with one of the wheel lift 7 and the auxiliary carriage 18. It may be. In this way, the attachment work of the attachment 22 need only be performed on the other side, so that the attachment work can be simplified and the towing work efficiency can be improved.

[0069]

As described above, according to the present invention, a wheel lift having a wheel mounting table at the tip and an auxiliary cart are provided, and the auxiliary cart is attached to the tip of the wheel lift instead of the wheel mounting table to be covered. The left and right wheels at one end of the towing vehicle in the longitudinal direction of the vehicle are placed on the auxiliary bogie, and the towed vehicle is towed by a tow truck in this state, so it is heavy like a truck and exceeds the lifting capacity of the wheel lift. The load of the towed vehicle can be prevented from being received by the auxiliary truck and acting on the rear portion of the vehicle body of the tow truck. As a result, it is possible to avoid a situation in which the front wheels of the tow truck are not lifted and the front wheels cannot be steered, or a situation in which running stability is deteriorated, and it is possible to reliably and safely tow a towed vehicle which cannot normally be towed. The width of the vehicle to be towed can be increased. In addition, since the auxiliary truck always provided in the tow truck is used, loss of time between calls to a large tow truck can be eliminated, towing work can be performed quickly, and congestion on a main road and the occurrence of an accident can be prevented.

[Brief description of the drawings]

1 (a) is an enlarged view of a portion A in FIG. 4 (a), and FIG. 1 (b) is an enlarged view of a portion B in FIG. 4 (b).

2 (a) is an enlarged view of a portion C in FIG. 5 (a), and FIG. 2 (b) is an enlarged view of a portion D in FIG. 5 (b).

3A is a cross-sectional view taken along line EE of FIG. 2A, and FIG. 3B is a cross-sectional view taken along line FF of FIG. 2B.

4A and 4B show a vehicle towed state by a tow truck according to an embodiment of the present invention, wherein FIG. 4A is a side view of a vehicle towed state by a wheel mounting table, and FIG. .

FIGS. 5A and 5B show a vehicle towed state by a tow truck according to an embodiment of the present invention, wherein FIG. 5A is a plan view of a vehicle towed state by a wheel mounting table, and FIG. .

FIG. 6 is a side view of the tow truck according to one embodiment of the present invention in a state where the vehicle is towed by both the wheel mounting table and the auxiliary truck.

FIG. 7 is an overall schematic configuration diagram of a tow truck according to an embodiment of the present invention in a vehicle towed state by a wheel mounting table.

8A is a diagram corresponding to FIG. 2B of a modification, and FIG. 8B is a diagram corresponding to FIG. 3B of a modification;

[Explanation of symbols]

 7 Wheel lift 13 Wheel mounting table 17 Ground 18 Auxiliary trolley 22 Attachment V Towed vehicle v1 Wheel W Tow truck

Claims (6)

[Claims] 1. A vehicle according to claim 1, further comprising: a wheel lift having a wheel mounting table at an end thereof, and a wheel lift rotatable in a horizontal plane, and an auxiliary trolley, wherein left and right wheels on one end of the towed vehicle in the vehicle longitudinal direction are mounted on the wheel mounting table. Alternatively, the left and right wheels at one end in the vehicle longitudinal direction of the towed vehicle are placed on the wheel mounting table, and the left and right wheels at the other end in the vehicle longitudinal direction of the towed vehicle are placed on the auxiliary truck, and the wheel lift is lifted. A tow truck adapted to pull a towed vehicle while moving the wheel mounting table from the ground by moving the wheel mounting table and the auxiliary vehicle, each of which is detachably attached to a wheel lift tip, When the tow vehicle is towed with the auxiliary trolley attached to the tip of the wheel lift, the left and right wheels at one end in the vehicle longitudinal direction of the tow vehicle are mounted on the auxiliary trolley, and the front of the auxiliary trolley and the tow vehicle Wrecker, characterized in that it is configured to ground both the left and right wheels in a direction other end side. 2. The tow truck according to claim 1, wherein the auxiliary bogie is configured to be detachably attached to an end of the wheel lift via an attachment. 3. The tow truck according to claim 2, wherein the attachment is a separate part separated and independent from the wheel lift and the auxiliary truck. 4. The tow truck according to claim 2, wherein the attachment is preliminarily integrated with one of the wheel lift and the auxiliary truck. 5. The tow truck according to claim 2, wherein the attachment is configured to be vertically rotatably connected to the auxiliary truck. 6. A method of towing a towed vehicle by a tow truck in which a wheel mounting table and an auxiliary vehicle are detachably attached to a tip of a wheel lift rotatable in a horizontal plane, wherein the towed vehicle is loaded. When is within the range of the lifting capacity of the wheel lift, the wheel mounting table is attached to the tip of the wheel lift, and the left and right wheels at one end in the vehicle longitudinal direction of the towed vehicle are mounted on the wheel mounting table, or The left and right wheels at one end in the vehicle longitudinal direction of the towed vehicle are mounted on the mounting table, and the left and right wheels at the other end in the vehicle longitudinal direction of the towed vehicle are mounted on the auxiliary vehicle. The towed vehicle is towed while the mounting table is raised from the ground. On the other hand, when the load of the towed vehicle exceeds the range of the lifting capacity of the wheel lift, At the tip of the wheel lift, mount the left and right wheels on one side of the towed vehicle in the longitudinal direction of the towed vehicle on the auxiliary vehicle, ground the auxiliary vehicle without moving the wheel lift up, A method of towing a vehicle, wherein the towed vehicle is towed while the left and right wheels on the end side are grounded.