CN203805870U - Folding rescue trailer device unfolded through air spring - Google Patents

Abstract

The utility model relates to a folding rescue trailer device unfolded by an air spring, which comprises a storage frame and a trailer unit. The beam gas spring, the wheel bracket is installed on the beam, the trailer wheel is installed on the wheel bracket, and the beam gas spring with control switch is installed on the folding beam to drive the beam to open. The telescopic end of the beam gas spring is connected to the beam through a folding link. The control switch of the beam gas spring controls the opening timing through the cam fixed on the hinge part of the main beam. The beneficial effect of the utility model is that the trailer can be completely stored in an ordinary vehicle of a conventional size, and the trailer can be quickly opened and folded through the winch and the traction rope without any major refitting of the vehicle, which is convenient to use. The opening timing of the crossbeam can be controlled through the crossbeam gas spring with a control switch, preventing the crossbeam from opening prematurely and reducing the demand for the width of the rescue vehicle body.

Description

Folding rescue trailer unit deployed via air springs

technical field

The utility model relates to a folding rescue trailer device unfolded by an air spring.

Background technique

Rescue trailers are used to tow vehicles that cannot drive normally due to failures or accidents. Special-purpose wreckers are large in size and complex in structure. They are dedicated to special vehicles and can only perform towing tasks. They have poor adaptability, high purchase and use costs, and cannot adapt to scale. The towing needs of smaller auto repair shops.

Utility model content

The technical problem to be solved by the utility model is: to provide a foldable rescue trailer unfolded by an air spring, an ordinary vehicle can be transformed into a rescue vehicle with a trailer function after simple transformation, and the crossbeam can be opened only when the folded beam is unfolded. Expand.

The technical solution adopted by the utility model to solve the technical problem is: a folding rescue trailer device unfolded by an air spring, including a storage frame and a trailer unit, a winch is installed on the storage frame, and the storage frame is installed in the rescue vehicle compartment Inside, the trailer unit includes a main beam, a folding beam, a cross beam, a wheel support and a trailer wheel. The head end of the main beam is equipped with a joint for connecting with the tow ball of the rescue vehicle, and the other end of the main beam is connected to one end of the folding beam through separate The hinge parts of the main beam fixed on the main beam and the folded beam are hinged with the hinged parts of the folded beam. A folded beam gas spring is arranged between the main beam and the folded beam to push the folded beam to unfold. There are beams hinged with the folded beam on both sides of the folded beam. , there are two wheel supports, the two wheel supports are installed on the beam, and are located on both sides of the folding beam, the trailer wheels are installed on the wheel supports, and the head end of the main beam and the storage frame pass through a detachable rotation limit structure Connection, on the folding beam, the main beam is folded by the traction rope of the winch, and the traction wheel of the folding beam is installed on the folding beam to drive the beam to open. The crossbeam is connected, and the control switch of the crossbeam gas spring controls the opening timing through the cam fixed on the hinge part of the main beam.

The wheel support is slidably installed on the crossbeam. On the folding beam, there are connecting rod brackets protruding to both sides of the folding beam. The wheel support connecting rod that drives the wheel support to slide on the cross beam is used between the wheel support and the connecting rod support. Connect, one end of the wheel support connecting rod is hinged with the wheel support, and the other end of the wheel support connecting rod is hinged with the connecting rod bracket.

The detachable rotation limiting mechanism includes a rotating shaft fixed on the main beam and an opening rotating shaft groove on the storage frame, and the rotating shaft is inserted into the rotating shaft groove to rotate.

The beneficial effects of the utility model are: the trailer can be completely stored in an ordinary vehicle of a conventional size, and the vehicle can be quickly opened and folded through the winch and the traction rope on the winch, without the need of refitting the vehicle. convenient.

The opening timing of the crossbeam can be controlled by the crossbeam gas spring with a control switch to prevent the crossbeam from opening prematurely and reduce the demand on the width of the rescue vehicle body.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram of the unfolding process of the folding beam of the present utility model;

Fig. 2 is a schematic structural view of the utility model after it is fully deployed;

Fig. 3 is a schematic diagram of the beam unfolding process of the present invention;

Fig. 4 is the schematic diagram of the control switch of the cam pressing the beam gas spring of the present invention;

Fig. 5 is the schematic diagram of the control switch of the cam release beam gas spring of the present invention;

In the figure, 1. storage frame, 2. winch, 3. main beam, 4. folding beam, 5. beam, 6. wheel support, 7. trailer wheel, 8. connector, 9. folding beam gas spring, 10 .rotating shaft, 11. rotating shaft groove, 12. traction rope, 13. traction wheel, 14. folding connecting rod, 17. connecting rod bracket, 18. wheel support connecting rod, 19. beam gas spring, 20. cam.

Detailed ways

As shown in Figures 1, 2, 3, 4 and 5, a folding rescue trailer device deployed by an air spring includes a storage frame 1 and a trailer unit, a winch 2 is installed on the storage frame 1, and the storage frame 1 is installed In the rescue vehicle compartment, the trailer unit includes a main beam 3, a folding beam 4, a beam 5, a wheel support 6 and a trailer wheel 7. The head end of the main beam 3 is equipped with a connecting head 8 for connecting with the tow ball of the rescue vehicle. The other end of the beam and one end of the folded beam are hinged through the main beam hinge part and the folded beam hinge part respectively fixed on the main beam and the folded beam. Spring 9, the both sides of folding beam 4 have crossbeam 5 hinged with folding beam 4, there are two wheel holders 6, two wheel holders 6 are installed on the crossbeam 5, and are positioned at the both sides of folding beam 4 respectively, trailer wheel 7 Installed on the wheel support 6.

The head end of the main beam 3 is connected to the storage frame 1 through a detachable rotation limiting structure, and the detachable rotation limiting mechanism includes a rotating shaft 10 fixed on the main beam 3 and an open rotating shaft groove 11 on the storage frame 1 , the rotating shaft 10 is inserted into the rotating shaft slot 11 to rotate.

On the folding beam 4 there is a traction pulley 13 for folding the main beam 3 and the folding beam 4 by using the traction rope 12 of the winch 2 .

The beam gas spring 19 with the control switch that drives the beam 5 to open is installed on the folding beam 4, the telescoping end of the beam gas spring 19 is connected with the beam 5 through the folding connecting rod 14, and the control switch of the beam gas spring 19 is hinged by being fixed on the main beam A cam 20 on the part controls the opening timing. The shape of the boss ensures that the control switch of the crossbeam gas spring 19 is in a released state when the crossbeam is fully folded, and the crossbeam can be kept in a folded state by the crossbeam gas spring 19.

The wheel support 6 is slidably installed on the crossbeam 5. On the folding beam 4, there are link brackets 17 protruding to both sides of the folding beam 4. Between the wheel support 6 and the link support 17, the wheel support 6 is driven on the crossbeam. The wheel holder connecting rod 18 of sliding on the 5 is connected, and one end of the wheel holder connecting rod 18 is hinged with the wheel holder 6, and the other end of the wheel holder connecting rod 18 is hinged with the link bracket 17.

The release process is as follows:

The winch 2 releases the traction rope 12, and the folding beam 4 is slowly opened under the action of the folding beam gas spring 9; when the folding beam 4 is opened to a certain degree, the cam 20 on the hinge part of the main beam presses the control switch of the beam gas spring 19 , make the beam gas spring 19 work, open the beam 5; after the trailer unit is fully opened, take out the traction rope 12 that is enclosed within the traction wheel 13, and then pull out the trailer unit, so that the connector is buckled on the trailer ball. A springboard is set up on the wheel support 6, and accidents and breakdown vehicles are pulled on the wheel support 6 by the winch 2 to complete the whole trailer loading process.

The procedure for folding the trailer unit is as follows:

First put the traction rope 12 on the traction wheel 13, hook the pull hook at the head end of the traction rope 12 on the storage frame 1, unlock the connector 8 and the tow ball, lift the connector 8, and drag the main beam 3 into the compartment of the rescue vehicle Inside, the rotating shaft 10 of the main beam 3 is snapped into the rotating shaft groove 11 of the detachable rotation limiting structure, the winch 2 tightens the traction rope 12, and the traction rope 12 starts to make the folding beam 4 and the main beam 3 overcome the pressure of the folding beam gas spring 9 Active force folds slowly, and when the folding beam 4 is folded to a certain degree, when the cam 20 on the main beam hinge part presses the control switch of the beam gas spring 19, the beam 5 is manually folded; the winch 2 continues to work until the folding beam 4, The main beam 3 is fully folded, and the cam 20 on the main beam hinge part has released the control switch when the folding beam 4 and the main beam 3 are fully folded, so that the crossbeam gas spring 19 cannot be stretched.

Claims (3)

1. the folding breakdown trailer device launching by air bellow, is characterized in that: comprises and takes in frame and trailer unit, take in frame capstan winch is installed, take in frame and be arranged in breakdown lorry compartment,

Trailer unit comprises girder, folded beam, crossbeam, wheel holder and trailer wheels,

The head end of girder is provided with the connector for being connected with the tow ball of breakdown lorry, the other end of girder and one end of folded beam are hinged by the girder articulated section and the folded beam articulated section that are separately fixed on girder and folded beam, between girder and folded beam, arrange and promote the folded beam gas spring that folded beam launches, the both sides of folded beam have the crossbeam hinged with folded beam, wheel holder has two, and two wheel holders are arranged on crossbeam, and lay respectively at the both sides of folded beam, trailer wheels is arranged in wheel holder

The head end of girder with take in frame and be connected by separable rotary position limiting structure,

On folded beam, have and utilize the folding girder of hauling rope of capstan winch, the traction wheel of folded beam,

The crossbeam gas spring with master cock that drives crossbeam to open is installed on folded beam, and the telescopic end of crossbeam gas spring is connected with crossbeam by folding connecting rod, and the master cock of crossbeam gas spring is opened opportunity by the cam control being fixed on girder articulated section.

2. the folding breakdown trailer device launching by air bellow according to claim 1, it is characterized in that: described wheel holder is arranged on crossbeam slippingly, on folded beam, there is the connecting rod rack stretching out to folded beam both sides, between wheel holder and connecting rod rack, by driven wheel holder wheel holder connecting rod of slippage on crossbeam, connect, one end of wheel holder connecting rod is hinged with wheel holder, and the other end and the connecting rod rack of wheel holder connecting rod are hinged.

3. the folding breakdown trailer device launching by air bellow according to claim 1, it is characterized in that: described separable rotating and limiting mechanism comprises the rotary axis groove that is fixed on the rotating shaft on girder and takes in the opening in frame, rotating shaft embeds rotary axis groove and rotates.