JPH10329599A - Frame for vehicle transportation, wrecker truck, and simplified crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame for vehicle transportation and a wrecker truck using the frame which is excellent in operability and profitability, of which turning radius is not so increased even if a vehicle is towed, and also which is excellent in controllability by improving the structure for mounting to the wrecker truck, and shortening the length and reducing the weight of the wrecker truck itself. SOLUTION: A frame for vehicle transportation 30 mounted on a wrecker truck provided with a column 20 between the front wheels 13 and rear wheels 14 of a deck 12 comprises a front frame 40 which is provided with a connection part installed on the column 20, supported normally on the deck 12, and extended beyond the periphery of the deck 12 and of which lower end is lowered to near the ground, a rear frame 50 installed on the lower end part of the front frame 40 rotatably from the normal erected style to the fallen-down style during vehicle transportation, at the middle part of which a vehicle loading means 51 is provided, and at the free end part 52 of which a rear part lifting means 53 for a vehicle is provided, and a fallen- down style holding means 60 which is provided between the rear frame 50 and the front frame 40 and holds the rear frame 50 in the fallen-down style.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle transporting frame for removing or moving a vehicle such as a faulty vehicle, an accidental vehicle, or an illegally parked vehicle, a tow truck provided with the frame, and a frame to which the frame can be attached. It relates to a simple crane.

[0002]

2. Description of the Related Art At present, automobiles have become indispensable in transportation means and merchandise distribution means, and their development and increase in the number of vehicles are remarkable. Therefore,
Some vehicles, such as vehicles that cause breakdowns, vehicles that cause accidents, and vehicles that are parked illegally, impede the smooth flow of traffic. Therefore, in order to remove these vehicles and achieve a smooth traffic flow, the vehicle is moved to a predetermined place where there is no hindrance by a tow truck.

[0003] The current movement by a tow truck is performed as shown in FIG. The tow truck is provided with a crane 5 at a position between a front wheel 3 and a rear wheel 4 on a carrier 2 behind a cab 1, and a frame 6 on which a towing vehicle is mounted at the rear end falls down rearward during towing. It is rotatably mounted so that it stands upright when not in use, and a weight 7 is provided at the front end to balance the weight of the towing vehicle.

[0004]

However, the front wheel 3 or the rear wheel 4 of the vehicle to be moved is placed on a frame 6 projecting backward from the loading platform 2, and the remaining wheels 3, 4 are attached to the ground. Towing, almost half of the weight of the towing vehicle is placed on the frame 6 behind the rear wheel 4, and the balance is established with the rear wheel 4 as a fulcrum. As a result, the wheel base becomes longer to prevent floating, and the weight is added to the tip. 7 also had to be provided protruding from the vehicle. Therefore, the tow truck itself becomes longer and heavier, so that operability and economy are not good, and when the vehicle is being towed, the vehicle to be further towed is connected, so that the turning radius is further increased and the operability is difficult. .

[0005] Further, according to the legal regulations of vehicles, it has been difficult to make a tow truck conforming to the regulations in terms of specifications, and modifications have sometimes been made that violate the specifications.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the structure for mounting the vehicle on a tow truck, to shorten the length of the tow truck itself, to reduce the weight of the vehicle, and to improve the operability and economy. An object of the present invention is to provide a vehicle carrying frame which is not too large and has good operability, and a tow truck using the frame.

[0007]

In order to achieve this object, the present invention is directed to a vehicle transporting frame mounted on a tow truck equipped with a support between a front wheel and a rear wheel of a carrier. A front frame having a connecting portion mounted on a support, normally supported by the carrier, and extending beyond the carrier and having a lower end descending to near the ground; and a lower end of the front frame when the vehicle is transported from a normal standing posture. A rear frame, which is rotatably mounted to a lying posture, a vehicle mounting means is provided at an intermediate portion, and a rear lifting means for the vehicle is provided at a free end, and a rear frame is provided between the rear frame and the front frame. And a falling posture holding means for holding the rear frame in a falling posture.

According to a second aspect of the present invention, in the first aspect, the rear frame is provided with a slide means having a free end that expands and contracts.

According to a third aspect of the present invention, in the first aspect, the front frame includes an outrigger for a frame for setting the rear frame to the lying posture. .

According to a fourth aspect of the present invention, a support is provided between a front wheel and a rear wheel of a carrier, and the support is provided with a free wheel bracket rotatable in a horizontal plane. The vehicle transporting frame is mounted on the connecting portion so as to be freely rotatable, and the vehicle transporting frame does not touch the ground in a normal state in which the rear frame is folded in the upright posture on the front frame, and is supported and fixed so as not to swing. A frame supporting column provided on the loading platform so that the vehicle transporting frame is rotatable around the crane support when the vehicle is transported with the rear frame set from the standing posture to the lying posture. It is a tow truck.

According to a fifth aspect of the present invention, in the fourth aspect, the frame support column stands up when the rear frame is in the upright position, and supports and fixes the front frame. It is a tow truck characterized by being separated from the tow truck.

According to a sixth aspect of the present invention, in the fourth aspect, when transporting the vehicle, the entire vehicle is placed on the rear frame and another transport wheel is provided on the rear frame, or a part of the vehicle is mounted on the rear frame. A tow truck is characterized in that it is mounted on a rear frame and at least some wheels of the vehicle are grounded.

According to a seventh aspect of the present invention, in the sixth aspect, a part of the vehicle is put on the rear frame, at least a part of wheels of the vehicle is grounded, and a braking means of the grounded wheel is provided on the towing vehicle side. The tow truck is characterized by being controllable.

According to an eighth aspect of the present invention, there is provided a simple crane wherein a support column having a crane is provided on a support beam, and a free wheel bracket for mounting a vehicle carrying frame is rotatably provided on the support column. And

In a ninth aspect of the present invention, there is provided a simple crane according to the eighth aspect, wherein an outrigger is provided on the support beam.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings showing embodiments.

FIGS. 1 to 12 show an embodiment of the present invention.

In FIG. 1, reference numeral 10 denotes a tow truck, in which a front wheel 13 and a rear wheel 14 are provided below a driver's cab 11 and a bed 12, respectively. A column 20 is provided between the front wheel 13 and the rear wheel 14 of the carrier 12.

More specifically, a support beam 15 that exceeds the width of the carrier 12 in the vehicle width direction is provided on the carrier 12, and a column 20 is mounted on the support beam 15 so as to be rotatable in a horizontal plane. I have. Both ends of the support beam 15 are extendable and contractible in the vehicle width direction, and an outrigger 16 is provided at the end. A crane 21 which is folded in a vertical plane is provided at the upper end of the column 20.
Is provided.

At the center in the width direction of the support beam 15, a disk plate 22 is fixed by welding or the like, and a collar 23 with a collar is mounted thereon. A free wheel bracket 24 is rotatably mounted on the collar of the collar 23 with a collar. The disk plate 25 is mounted from above so as to allow this rotation, and the disk plate 26 attached to the lower end of the support 20 is mounted.
Are mounted, and they are integrally fixed with a plurality of bolts. Here, the configuration is shown in which the column 20 does not rotate, but it may be configured to rotate by a known method. At a position 180 degrees opposite to the free wheel bracket 24, a king pin 27 protrudes outward.

Here, the support beam 15, the support 20 on which the crane 21 is provided, the free wheel bracket 24 rotatable on the support 20, and the outrigger 16 can be integrated into a simple crane. . If such a simple crane is made and marketed, it can be easily converted into a tow truck by simply mounting it on a truck bed.

Further, a frame supporting column 28 for supporting the vehicle carrying frame 30 is provided. The frame support column 28 supports and fixes the vehicle transport frame 30 so that the vehicle transport frame 30 does not touch the ground and does not swing in a normal state when the vehicle is not transported, and the vehicle transport frame rotates around the support column 20 when the vehicle is transported. In order to be free, two positions, a standing position and a falling position, are taken at the position of the loading platform 12 as far behind the support 20 as possible. The frame support column 28 stands up and supports the front frame 40 when the rear frame 50 is in the upright posture, and falls down and separates from the front frame 40 when the rear frame 50 is in the lying down position.

As shown in FIGS. 1 to 3, the vehicle carrying frame 30 has a connecting portion 41 mounted on the support column 20, is normally supported by the loading platform 12, extends beyond the loading platform 12, and has a lower end on the ground. A front frame 40 descending to the vicinity, and a lower end portion of the front frame 40 is rotatably mounted from a normal standing posture to a lying posture during vehicle transportation, and a vehicle mounting means 51 is provided at an intermediate portion, and a free end portion 52 is provided. Frame 50 provided with a rear lifting means 53 for the vehicle, and a falling posture holding means 60 provided between the front frame 40 and the rear frame 50 for holding the rear frame 50 in a falling posture.
It is composed of

The front frame 40 has an L-shape that descends vertically from the horizontal as viewed from the side as shown in FIG. 3, and a rectangular portion having a large hole at the center and a rectangular portion as viewed in a plan view as shown in FIG. And two connecting portions 41 protruding from the portion toward the front end by opening the width of the free wheel bracket 24. The connecting portion 41 has a U-shaped cut-out portion 42 into which the king pin 27 of the free wheel bracket 24 enters, and a rectangular plate 43 with a hole into which the king pin 27 is to be attached. As shown in FIG. 4, a flat plate 44 is attached to the vertical frame portion of the front frame 40 by welding or the like to increase rigidity. Further, on both sides of the vertical frame portion, frame outriggers 45 are provided.

As shown in FIGS. 2 and 3, the rear frame 50 has a U-shaped frame in plan view, and a flat plate 54 is fixed on the upper side by welding or the like to improve rigidity. A vehicle loading means 51 is mounted on 54 so that the loading position can be adjusted at the mounting position of the hole, and the open side is rotatable via a pin 55 at the lower end of the front frame 40. On the side opposite to the open side of the U-shaped frame, the free end 52 is expanded and contracted by slide means 56 in which the U-shaped frame is also nested. The free end portion 52 is provided with a frame moving wheel 57, but in some cases,
As shown in FIG. 11, a large transport wheel 58 is provided. A hole 59 is provided at a position beyond the free end of the pin 55 of the rear frame 50 so as to engage with the lying posture holding means 60.

The falling posture holding means 60 includes the front frame 4.
One end of the rod-shaped member is rotatable near the L-shaped corner on both sides of the zero, and a plurality of posture adjusting holes 61 are provided side by side on the other end. This hole 61 and the rear frame 50
The hole 59 is aligned with the hole 59 and fixed with bolts or pins to maintain the lying posture.

As described above, the tow truck 10 is provided with the support 20 between the front wheel 13 and the rear wheel 14 of the loading platform 12, the free wheel bracket 24 which is rotatable in a horizontal plane on the support 20, and the free wheel The vehicle transporting frame 30 is mounted on the bracket 24 so as to be rotatable within the vertical plane by the connecting portion 41, and the vehicle transporting frame 30 does not reach the ground in a normal state in which the rear frame 50 is folded in the upright posture on the front frame 40, In addition, the frame support column 28 is supported and fixed so that it does not swing, and the frame support column 28 that allows the vehicle transport frame 30 to be rotatable around the support column 20 when the vehicle is transported with the rear frame 50 set from the upright posture to the lying posture. It is provided on the carrier 12.

Next, the wrecker operation of a vehicle requiring movement will be described with reference to FIGS.

As shown in FIG. 1, the tow truck 10 in which the carrier vehicle frame 30 is folded as shown by a two-dot line on the column 20 of the crane 21 and supported by the frame support column 28 is shown in FIG. For example, go to the front of the towed vehicle and turn the crane 21 backward to rotate the rear frame 50
The rear frame 50 is changed from the standing posture to the lying posture while the frame support 28 is removed, and the frame moving wheel 57 of the free end 52 of the rear frame 50 is attached to the ground and pushed under the vehicle.

For example, the front axle is located at the position of the vehicle loading means 51 of the rear frame 50, the free end 52 is extended and contracted by the slide means 56, and the rear frame 53 is lifted by the rear lifting means 53 including a winch or a hoist. The free end 52 of 50 is lifted as shown in FIGS. Next, by operating the frame outrigger 45, the front wheel 3 of the vehicle is lifted to take a desired posture as shown in FIG. 6D. In this state, the hole 61 and the hole 59 of the rear frame 50 are aligned and fixed using the lying posture holding means 60, and then the foot of the outrigger 45 for a vehicle is pulled in as shown in FIG. In this state, the frame 30 for the transport vehicle is configured such that the frame support column 28 is tilted down and is rotatable around the support column 20,
Towing by the tow truck 10 is possible.

FIG. 10 shows the braking system when a part of the vehicle is mounted on the rear frame 50 and at least some of the wheels of the vehicle are grounded, for example, when the vehicle is in a traction posture as shown in FIG. 9E. ing. That is, the braking means 80 of the tow truck 10 as a towing vehicle is connected to the braking means 70 of the grounded wheel of the towed vehicle, so that the braking of the towed vehicle on the towing vehicle side can be controlled.

The braking means 70 includes an existing braking device 71
An air master bag 72 is used, and a braking means 80 on the tow truck 10 side is connected to a brake master mounting bracket 73 mounted on the air master bag 72. The braking means 80 is composed of a member extending from a brake valve 81 to a brake master mounting bracket 73 by a brake air hose 82.

As a result, even if the tow truck 10 applies the braking, the towed vehicle is also applied with the braking, so that there is no kickback or the like, and the running stability is obtained without generating the swinging force on the curve.

FIG. 11 shows a case where the vehicle to be towed is relatively small, and the rear frame 50 is substantially replaced with large carrying wheels 58 instead of the frame moving wheels 57 at the free end 52 of the rear frame 50. This is the case where the vehicle is leveled and the entire vehicle is placed thereon. As described above, when transporting the vehicle, another transport wheel 58 is provided to lift the entire towed vehicle on the rear frame 50, or a part of the vehicle is mounted on the rear frame 50, and at least a part of the vehicle is mounted. The wheels are grounded.

FIG. 12 shows a schematic diagram A showing a conventional turning radius at the time of towing, and a schematic diagram B showing a turning radius of the present invention. The connecting position of the towed vehicle and the center of whirling are conventionally the rearward position protruding from the tow truck, and the present invention is located slightly forward of the rear axle of the tow truck 10, so that the turning radius of the present invention at the time of towing is small. Become. If the turning radius is small, the effect of kickback and the like is large, but as shown in FIG. 10, the towing vehicle 10 can control braking of the towed vehicle, so that stable running can be performed without any problem. .

The weight distribution applied to the vehicle will be described with reference to FIG. 10 and FIG. FIG. 13 shows that the front wheel load of a vehicle to be moved in the conventional type is 5 tons,
When the rear wheel load is 8 tons, 5 tons are applied to position C and 8 tons are applied to position D. The 5-ton load applied to the position C is balanced with the front wheel load applied to the front wheel position A by the moment with the rear wheel position B of the tow truck as a fulcrum. In this case, since the load of the front wheel of the towed vehicle is applied to the rear of the rear wheel of the tow truck, it is necessary to place the weight 7 as far forward as possible and to lengthen (increase) the tow truck in the front-rear direction.

FIG. 10 illustrates the weight distribution when the same towing vehicle is towed by the tow truck of the present invention. Distance between the position A of the support 20 and the front wheel position B on the rear frame 50, the front wheel position B and the rear end lifting positions C and D of the rear frame 50
, The lifting positions C and D and the position E of the rear wheel axle are almost equal, and the front wheel load of the towed vehicle is 5
Assume that the rear wheel load is 8 tons. When the rear end of the rear frame 50 is not lifted, the position A and the position C of the support column 20 hang by 2.5 tons. When the vehicle is lifted, the front frame 40, the rear frame 50, and the vehicle to be pulled are integrated, and the position E of the rear wheel axle becomes a fulcrum. Therefore, the load applied to the position A is 5 × (2/3) =
3.3 tons.

[0038]

As described above, according to the first aspect of the present invention, the support between the front wheel and the rear wheel of the bed of a tow truck can be freely rotated in the horizontal direction. By improving the length of the tow truck itself and making it lighter, the operability and economy are good, and even if the vehicle is towed, the turning radius is not so large and it is possible to provide a vehicle carrying frame with good operability. I can do it.

According to the second aspect of the invention, in addition to the effect of the first aspect, the length of the rear frame can be adjusted, the size of the vehicle to be towed can be adjusted, and optimal towing can be performed. .

According to the third aspect of the present invention, in addition to the effect of the first aspect, a vehicle to be easily towed can be loaded in a towed state in cooperation with the rear lifting means.

According to the fourth aspect of the present invention, the structure for mounting the vehicle on a tow truck is improved, the length of the tow truck itself is shortened and lightened, the operability and the economy are good, and the turning radius is not so large even when the vehicle is towed. It is possible to provide a tow truck using a transport frame for a vehicle that does not increase in size and has good operability.

According to the fifth aspect of the invention, in addition to the effect of the fourth aspect, the loading and unloading of the towed vehicle can be facilitated.

According to the sixth aspect of the invention, in addition to the effect of the fourth aspect, it is possible to appropriately select the size of the towing vehicle.

According to the seventh aspect of the invention, in addition to the effect of the sixth aspect, since the braking control of the towing vehicle can be performed, a phenomenon such as kickback can be suppressed, and stable running can be realized.

The invention of claim 8 provides a simple crane having a wheel bracket, so that it can be manufactured as a standard, and a truck or the like can be easily converted into a tow truck.

According to the ninth aspect of the present invention, in addition to the effect of the eighth aspect, since the outrigger necessary for the crane is provided integrally, it becomes more convenient.

[Brief description of the drawings]

FIG. 1 is a left side view of a tow truck according to the present invention.

FIG. 2 is a plan view showing a falling posture of the vehicle transport frame shown in FIG. 1 when the vehicle is transported.

FIG. 3 is a side view of the vehicle carrying frame shown in FIG. 2;

FIG. 4 is a rear view of the vehicle carrying frame shown in FIG. 3;

FIG. 5 is a front view of the vehicle carrying frame shown in FIG. 3;

FIG. 6 is an explanatory view of a main part for describing loading of a towed vehicle.

FIG. 7 is an explanatory view of a main part similar to FIG. 6;

FIG. 8 is an exploded perspective view of a wheel bracket portion of a support.

FIGS. 9A to 9E are operation explanatory diagrams for explaining a loading operation of a tow truck.

FIG. 10 is an explanatory diagram showing braking control of a towed vehicle.

FIG. 11 is an explanatory diagram showing an example in which a small towing vehicle is mounted on a frame.

FIGS. 12A and 12B are explanatory diagrams illustrating a turning radius at the time of tow.

FIG. 13 is an explanatory view of a towed state of a conventional tow truck.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Tow truck 20 ... Prop 30 ... Vehicle transport frame 40 ... Front frame 50 ... Rear frame 60 ... Falling posture holding means 70, 80 ... Braking means

Claims (9)

[Claims] 1. A vehicle transporting frame mounted on a tow truck provided with a support between a front wheel and a rear wheel of a support, comprising a connecting portion mounted on the support, and normally supported by the support. A front frame extending beyond the loading platform and having a lower end lowered to near the ground; and a lower end portion of the front frame rotatably mounted from a normal standing posture to a lying posture during vehicle transportation, and a vehicle mounting means provided at an intermediate portion. A rear frame provided at a free end thereof with a rear lifting means for the vehicle; a rear frame provided between the rear frame and the front frame;
A frame for transporting a vehicle, comprising a lying posture holding means for holding the rear frame in a lying posture. 2. The vehicle transporting frame according to claim 1, wherein the rear frame includes a slide unit whose free end expands and contracts. 3. The vehicle carrying frame according to claim 1, wherein the front frame includes a frame outrigger for setting the rear frame to the lying posture. 4. A support is provided between a front wheel and a rear wheel of a carrier,
A free-wheel bracket that is rotatable in a horizontal plane is provided on the support, a vehicle-transporting frame is mounted on the free-wheel bracket so as to be rotatable in a vertical plane, and a rear frame is folded on the front frame in an upright posture. In a normal state, the vehicle transport frame does not touch the ground, and is supported and fixed so as not to swing, and the vehicle transport frame is connected to the crane support when the vehicle is transported with the rear frame set from the standing posture to the lying posture. A tow truck characterized in that a frame supporting column that is rotatable around is provided on the carrier. 5. The frame support column according to claim 4, wherein the frame support column stands up when the rear frame is in the upright position to support and fix the front frame, and falls down and separates from the front frame in the down position. Characterized tow truck. 6. The vehicle according to claim 4, wherein when transporting the vehicle, the entire vehicle is mounted on the rear frame and another transport wheel is provided on the rear frame, or a part of the vehicle is mounted on the rear frame. A tow truck characterized in that at least some of the wheels are grounded. 7. The vehicle according to claim 6, wherein a part of the vehicle is mounted on the rear frame, at least a part of wheels of the vehicle are grounded, and braking means for the grounded wheels can be controlled on the towing vehicle side. And tow truck. 8. A simple crane comprising: a support beam provided with a crane provided on a support beam; and a free wheel bracket on which a vehicle carrying frame is mounted is rotatably provided on the support beam. 9. The simple crane according to claim 8, wherein an outrigger is provided on the support beam.