KR101781903B1 - A multipurpose trailer for carrying vehicle - Google Patents

Abstract

The present invention relates to a multipurpose trailer for transporting vehicles, which comprises a stacking frame (110) connected to a towing vehicle via a coupler (111) with a vehicle mounted thereon, a front wheel (110) mounted on both sides of the stacking frame First and second frame fixing brackets 130 and 140 fixed to both sides of the loading frame 110 adjacent to the first and second frame fixing brackets 120 and 121 and the rear wheel 121, And the first and second hinge shafts 132 and 142 are connected to each other so that the first end portions 131a and 141a are rotatably connected to the front wheel 120 and the rear wheel 121 via the first and second rotation shafts 133 and 143 The first and second wheel connecting brackets 131 and 141 and the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are disposed in the center of the front wheel 120 and the rear wheel 121, The first and second hinge shafts 132 and 142 are connected to each other by the first and second hinge shafts 132 and 142, A pair of air tubes 150a and 150b which are coupled in a surface contact state between the two frame fixing brackets 130 and 140 and the inner circumferential surfaces of the first and second wheel connecting brackets 131 and 141 facing each other and which can expand and contract as the compressed air flows in and out. And an air supply system 170 capable of injecting and discharging compressed air to and from the bellows-type air springs 150 and 160. The bellows-type air springs 150 and 160 are installed in the bellows-type air springs 150 and 160, 100).

Description

Description of the Related Art A multipurpose trailer for carrying vehicle

The present invention relates to a multipurpose trailer for vehicle transportation, and more particularly, to a multipurpose trailer for vehicle transportation and a multipurpose trailer which can be used for multipurpose use. The present invention relates to a multipurpose trailer for inflating and deflating The present invention relates to a multi-purpose trailer for vehicle transportation, which is realized by a bellows-type air spring, which enables a smooth and smooth upward / downward movement by a bellows-type air spring when raising and lowering a stacking frame.

In general, there are various methods for transporting the vehicle to a predetermined place. Among these methods, there is a person consignment method in which a person who consigns the vehicle directly operates the vehicle and sends it to a predetermined place. Which can be transported by being loaded on a car carrier or the like.

In Korean Utility Model Registration No. 0238605 (Oct. 10, 2001), a technique related to a trailer for a traction vehicle connected to a towing vehicle to tow a trailed vehicle or to safely carry a vehicle is disclosed.

In addition, there are disclosed in Korean Patent Publication No. 0250723 (issued on April 1, 2000), Registered Utility Model No.0217885 (issued on March 15, 2001), Registered Patent Publication No. 0511842 (issued September 2, 2005) 2012-0136032 (Dec. 18, 2012) discloses technologies related to car carriers.

The technique disclosed in the above-mentioned Japanese Patent Publication No. 0250723 is characterized in that a connecting footrest which is rotatably fixed to the rear end of a car body frame on which a loading bar is formed is provided and an auxiliary A loading ramp is connected to the end of the connecting footrest and rotatably connected to a supporting leg supported by the floor.

However, there is an inconvenience in that a worker must perform a lot of work at the time of loading the vehicle by attaching an auxiliary footrest to the connection footrest detachably and then attaching a separate foot leg touching the ground at the joint portions thereof.

The technique disclosed in the above-mentioned Registration Practical Utility Model No. 0217885 constitutes a connecting footrest which is projected and withdrawn by the operation of a cylinder at the rear of a lower frame in which a loading bar is formed, and an auxiliary footrest is hinged to the end of the connecting footrest The auxiliary footrests are normally folded in a state of being in a standing state and the auxiliary footrests can be hinged to the ground when the vehicle is loaded.

However, the loading lamp of the car carrier has a problem in that when the long-axis vehicle is loaded on the car carrier, the loading space is narrowed because the auxiliary footrest is to be stored in a granular state at the end of the connecting footrest. There is a problem in that the structure is complicated because it is put up by the old type.

In addition, in the technique disclosed in the above-mentioned Patent Publication No. 0511842, a riding stand is installed to project and retract to the rear end of a lower frame as a loader of a vehicle body, and an auxiliary staging plate touching the ground is disposed at an end of the riding stand, So that the vehicle can be loaded on the ashes.

However, the loading lamp of the car carrier disclosed above is used by manually hitching an auxiliary foot on the end of a ride-on carriage which is projected from the rear end of the lower frame of the vehicle body, and it is inconvenient for the operator to move the auxiliary footrest separately stored .

As described above, all the loading lamps of the car carriers disclosed in the above documents are provided with a connecting pedestal at the rear end of the pedestal of the car body, but have a structure in which the downward inclination angle of the pedestal is fixed.

Therefore, the loading lamps described in the above documents have a problem that an auxiliary footrest having a long length is required to be installed according to the height between the ground and the loading area of the vehicle body. When the bottom inclination angle of the footrest is made very large, There was a problem that inhibited.

In order to solve such a problem, in the above-mentioned Japanese Patent Application Laid-Open No. 2001-0136032, as shown in Figs. 1 and 2, an appearance angle of a sliding ram, which is projected from the rear of the vehicle itself, Discloses a technique relating to a loading lamp of a car carrier having a structure capable of varying along with an auxiliary ramp which is coupled and rotated by a hinge at its end to allow a vehicle to be loaded more safely.

1 and 2, the car carrier 1 is provided with a loading table 14 on the upper portion of the vehicle body frame 12, and left and right sides of the front and rear sides of the loading table 14 are provided with forward A lifting device 16 and a rear elevating device 18 are provided.

At this time, the upper stacking table 14 is installed on the upper part of the front elevating device 16 and the rear elevating device 18 so as to ascend and descend.

The loading ramp 20 of the car carrier mounting block has a guide rail 32 formed with an inclined groove portion having an upward ramp and a downward ramp in a predetermined area and is coupled to a rear end portion of the car body frame 12 of the car carrier 1. [ And is slid into the inside of the vehicle body frame 12 by push-pull power, and is extended downwardly by an inclined downward slope by the downward inclined path. The ramp frame 30 is inserted into the guide rail 32 of the ramp frame 30, And the end portion of the piston projecting and retracting from the main body frame is hinged to the end of the slider 40. The slider 40 is hinged to the end of the slider 40, A slider 40 having a cylinder 60 and projecting and retracting the slider 40 and a slider 40 connected to the end of the slider 40 by a hinge and folded or unfolded from the slider 40, It has a configuration comprising a contact sub-lamp (50).

Here, the slider actuator includes a cylinder fixing unit coupled to the body frame 12, a rotary coupling unit coupled to the cylinder fixing unit and rotated up and down with respect to the hinge axis, and a main body fixedly coupled to the rotation coupling unit, And the end of the piston is hinged to the end of the slider 40. [

At this time, the slider (40) comprises a protruding frame (41) in which the exit frames (41) formed in a straight line are inserted into the guide rail (32) A plate 42 mounted on the upper surface of the opposite side of the end frame 44 for contacting the wheels of the vehicle to be driven and an end frame 44 fixedly connecting ends of the projecting and dipping frames 41, And a rolling roller 66 attached to both bottom surfaces.

The slider 40 includes a rolling roller 66 coupled to an underside of the protruding and retracting frame 41 which is coupled to the guide rail 32, .

In addition, various types of car carrier related technologies are disclosed in Korean Patent Publication No. 0729802 (published on June 19, 2007) and Laid-open Patent Publication No. 2013-0054877 (published on February 27, 2013).

On the other hand, Korean Patent Registration No. 0839897 (published on June 20, 2008) discloses a technique relating to a trailer that is easy to load.

That is, as shown in FIGS. 1 and 2, the trailer easy to load as disclosed in the above-mentioned JP 0839897 has a coupler 11 connected to a coupler of a predetermined traction vehicle (not shown) (10), wheels (20) installed on the vehicle (10), and a loading compartment (30) installed on the upper part of the vehicle (10) so as to load cargo, the trailer comprising: Wherein the loading compartment 30 is connected to a pivoting shaft 33 provided in the vehicle 10 so that a rear end of the loading compartment 30 is lowered to the ground, (40) for rotating the loading compartment (30) and provided at the rear end of the loading compartment (30) so as to be rotatable in a direction in which the loading compartment The door 34, which is erected at the rear end of the loading compartment 30 and spreads backward, And further characterized in that the damper (40) for cushioning the pivoting speed of the loading compartment 30 is further provided.

At this time, the undercarriage 10 constitutes a skeleton of the trailer. The undercarriage 10 is supported by the wheel 20 and connected to a predetermined towing vehicle (not shown) and pulled. When the towing vehicle 10 is separated from the towing vehicle, And is supported by the support leg 12.

The loading compartment 30 is composed of a frame 31 and a bottom plate 32 provided inside the frame 31 so as to form a floor inside the frame 31 so that a cargo such as a motorcycle .

The winch which is the rotation driving means 40 includes a drum 41 and a handle 42 for manually rotating the drum 41. One end of the winch is wound on the drum 41, So that the cable 43 and the cable 43 connected to the front end of the loading compartment 30 are supported so as to turn the loading compartment 30 in such a direction that the rear end of the loading compartment 30 is lifted, And a pulley 44 provided in the drum 10.

The winch, which is the rotation driving means 40 constructed as described above, applies a moment to rotate the cable 43 in a direction in which the rear end of the loading compartment 30 is lifted while the cable 43 is wound.

The damper 50 serves to buffer the rapid loading of the loading compartment 30 due to the weight of the loading compartment 30 and the weight of the load placed on the loading compartment 30 when the loading compartment 30 is rotated, One end of the damper (50) is connected to the chassis (10) and the other end is composed of a damping cylinder connected to the loading compartment (30).

As such, the conventional vehicle-mounted trailer has a damper 50 composed of a damping cylinder, so that it is common to employ a method of raising the frame 30 obliquely for vehicle loading, and most of the prior art The car carrier was equipped with the means to contact the ground by the operation of hydraulic cylinders, such as an auxiliary footrest or swash plate, so that the vehicle could be loaded.

Registered Utility Model No. 0238605 of the Republic of Korea (October 10, 2001 Announcement: Vehicle Towing Trailer) Korean Patent Publication No. 0250723 (published on April 1, 2000, entitled Vehicle Transport Truck) Registered Utility Model No. 0217885 of Korea Registered on March 15, 2001 (Name: Truck Carrying Truck) Korean Patent Registration No. 0511842 (issued September 2, 2005, entitled "Car carrier with swash plate") Korean Patent Registration No. 0729802 (Car carrier trailer having a folding type post, name of publication: June 19, 2007) Korean Patent Publication No. 2012-0136032 (titled "Loading Lamp for Car Carrier Loading Stand" on Dec. 18, 2012) Korean Patent Laid-Open Publication No. 2013-0054877 (titled "vehicle carrier car carrier" Korean Registered Patent Publication No. 0839897 (2008.20.20. Announcement: Trailer Easy to Load)

The present invention relates to a vehicle carrier for carrying a vehicle, and more particularly, to a vehicle carrier for carrying a vehicle, which does not have a means for abutting against the ground by the operation of a hydraulic cylinder such as an auxiliary footrest or a swash plate for mounting the vehicle, To thereby provide a vehicle carrying trailer of a new type.

That is, an object of the present invention is to provide a bellows-type air spring for inflating and deflating the inflated and deflated air according to inflow and outflow of compressed air by using an air supply system, So that smooth and smooth upward / downward movement of the bellows type air spring can be achieved when the loading frame is moved up and down.

In order to achieve the above object, according to the present invention, there is provided a vehicle including a loading frame connected to a towing vehicle through a coupler and capable of loading a vehicle, and a vehicle having a plurality of front and rear wheels installed on both sides of the loading frame, A trailer according to claim 1, further comprising: a plurality of first and second frame fixing brackets fixed to both sides of the loading frame adjacent to the front and rear wheels; and a plurality of first and second frame fixing brackets A plurality of first and second wheel connecting brackets interconnected by 1,2 hinge shafts and one end of which is rotatably connected to the front wheel and the rear wheel via first and second rotating shafts, The bracket and the first and second wheel connecting brackets are connected to each other by the first and second hinge axes in the center of the front and rear wheels, A bellows-type air spring having a pair of air tubes which are coupled in a surface contact state between the two frame fixing brackets and the inner circumferential surfaces of the first and second wheel connecting brackets facing each other so as to be able to expand and contract as the compressed air flows in and out; And an air supply system capable of injecting and discharging compressed air into the bellows type air spring.

According to the present invention, the air supply system may be configured to independently control expansion and contraction of the front wheel side bellows type air spring and the rear wheel side bellows type air spring, respectively.

At this time, the air supply system is provided in a device box provided at a front end portion of a stacking frame, and compresses air to supply and discharge compressed air to and from the bellows-shaped air spring provided on the front and rear wheels through an air pipe, A solenoid valve provided to control the inflow and outflow of compressed air on the air pipe connecting between the air tank and the bellows-type air spring, and a solenoid valve .

According to the present invention, the first and second tensioning shafts for connecting the first and second frame fixing brackets and the first and second wheel connecting brackets are provided below the bellows-type air spring, The shaft is connected and fixed to the first and second fixed brackets through a first end of the first and second frame fixing brackets, It is preferable to tighten the coupling member into a separate coupling hole in a state where it is penetrated at one side.

In addition, it is preferable that the front end portion of the stacking frame further includes a support leg capable of adjusting the height and a caster-type wheel connected to the support leg.

According to the present invention, in implementing the operation of raising and lowering a stacking frame capable of mounting a vehicle in a vehicle transporting trailer, a plurality of bellows-type air springs that expand and contract according to the inflow and outflow of compressed air by using the air supply system It is possible to provide a trailer capable of smoothly moving up and down by a bellows-type air spring when raising and lowering the stacking frame .

According to the present invention, the air supply system can be variously configured to independently control inflation and deflation of the front-wheel-side bellows-type air spring and the rear-wheel-side bellows-type air spring, and can be used for vehicle transportation Of course, it has the advantage that it can be used as a multipurpose trailer to carry a specific cargo.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view for explaining a loading lamp of a car carrier stand according to the prior art; Fig.
2 is a perspective view for explaining a state before the operation of the loading lamp shown in FIG. 1 according to the related art.
3 is a side view showing a trailer which is easy to load according to the prior art.
Fig. 4 is a side view showing the operation of the trailer which is easy to load shown in Fig. 3 different from the prior art; Fig.
5 is a side view schematically showing the construction of a multi-purpose trailer for vehicle transportation according to the present invention.
6 is a plan view schematically showing the construction of a multi-purpose trailer for vehicle transportation according to the present invention;
FIG. 7 is a schematic view showing an air supply system applied to a multi-purpose trailer for vehicle transportation according to the present invention; FIG.
8 is a partial state view showing a state in which compressed air is injected into a bellows-shaped air spring of a multipurpose trailer for carrying a vehicle according to the present invention and a loading frame is elevated.
9 is a partial state view showing a state in which compressed air is discharged from a bellows-shaped air spring of a multi-purpose trailer for vehicle transportation according to the present invention, and the loading frame is lowered.
FIG. 10 is a physical photograph showing a state in which an air supply system in a device box is installed in a car carrier for carrying a vehicle according to the present invention. FIG.
FIG. 11 is a physical photograph showing a state in which the loading frame is lowered toward the ground for vehicle loading in the vehicle trailer multi-purpose trailer according to the present invention. FIG.
12 is a physical photograph showing a state in which the stacking frame is lifted from the ground in the multi-purpose trailer for transporting vehicles according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In order to explain the preferred embodiments of the present invention, the thicknesses of the lines and the sizes of the components shown in the accompanying drawings may be exaggerated or omitted for clarity and convenience of description, Terms to be given are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

5 to 7, the vehicle-carrying trailer 100 according to the present invention is capable of moving the stacking frame 110 up and down from the ground 200 by the operation of a plurality of bellows-type air springs 150 and 160 .

5 and 6, the vehicle transportation trailer 100 includes a loading frame 110 on which a vehicle can be loaded, a plurality of front wheels (not shown) that can move while supporting the loading frame 110, 120 and rear wheels 121 and a plurality of first and second frame fixing brackets 130 and 140 and first and second wheel connecting brackets 131 and 141 between the loading frame 110 and the front and rear wheels 120 and 121, A plurality of bellows type air springs 150 and 160 respectively installed through the bellows type air springs 150 and 160 and an air supply system 170 for supplying and discharging air to and from the bellows type air springs 150 and 160.

Here, the stacking frame 110 is a steel frame having a plate-shaped structure having a length and a width capable of loading a vehicle, and a skeleton is formed of a steel material capable of supporting a load of the stacking vehicle. A coupler 111 is provided on the skeleton protruded from the central portion of the front end of the stacking frame 110 so as to be connected to the towing vehicle, And an integrated mounting lamp 112 capable of being stepped on.

The stacking frame 110 is configured to form a skeleton of the trailer 100 and is supported by the front wheels 120 and the rear wheels 121 disposed on both sides of the stacking frame 110, The front end portion of the vehicle is supported by the support leg 181 and the caster wheel 180 provided at the front in a state where the vehicle is connected to the vehicle through the coupler 111 and pulled and separated from the towing vehicle.

At this time, the support leg 181 is configured to be adjustable in height, so that the caster-type wheel 180 connected to the support leg 181 can be lifted or lowered together with the landing gear of the aircraft.

A device box 176 is provided at the front end of the stacking frame 110 immediately behind the coupler 111 to provide an air supply system 170 for supplying and discharging air to and from the bellows- Respectively.

7 and 10, an air supply system 170 is installed in the apparatus box 176. The air supply system 170 compresses the air to supply the driving force necessary for supplying and discharging air An air compressor 174 for supplying compressed air to the air compressors 174 and 172 and air tanks 171 and 172 for storing compressed air from the air compressors 174 and an air pipe 174 for connecting between the air tanks 171 and 172 and the bellows- And a solenoid valve 173 provided to control the flow of the compressed air on the discharge side.

The bellows-type air springs 150 and 160 are so-called air actuators, and are equipment that can operate with compressed air that can be used instead of compressed air cylinders or hydraulic cylinders to form a constant stroke.

In other words, the bellows-type air springs 150 and 160 are configured such that a pair of air tubes 150a and 150b, 160a and 160b are symmetrically connected to each other to expand and contract as the compressed air flows in and out through the compressed air inlet, So as to form a stroke.

The stacking frame 110 can be moved up and down with respect to the ground surface 200 about the front wheels 120 and the rear wheels 121 by using strokes resulting from expansion and contraction of the bellows type air springs 150 and 160 There are constitutive features of the invention.

5 to 9, a pair of air tubes 150a and 150b, 160a and 160b constituting the bellows-type air springs 150 and 160 are attached to the car carrier 100 for carrying the vehicle according to the present invention, First and second frame fixing brackets 130 and 140, and first and second wheel connecting brackets 131 and 141, respectively.

At this time, the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are opposed to each other through the first and second hinge shafts 132 and 142, respectively.

The first and second frame fixing brackets 130 and 140 are fixed to one side surface of the stacking frame 110 in a state where the air tubes 150a and 160a of one of the bellows- The first and second wheel connecting brackets 131 and 141 are fixedly coupled to each other in a state where the other air tubes 150b and 160b of the bellows type air springs 150 and 160 are connected and fixed in a surface- 121 to support and fix the front wheel 120 and the rear wheel 121.

That is, the front wheel 120 is rotatably connected to one end 131a of the first wheel connecting bracket 131 by a first rotating shaft 133, and the rear wheel 121 is connected to the second wheel connecting bracket 141 And is rotatably connected to the one end 141a of the second rotary shaft 143 via a second rotary shaft 143. [

The first frame fixing brackets 130 are disposed opposite to the first wheel connecting brackets 131 fixedly connected to the front wheels 120 while being firmly fixed to one side of the loading frame 110 A pair of air tubes 150 constituting a bellows-type air spring 150 are provided between the first frame fixing bracket 130 and the first wheel connecting bracket 131 by being connected and fixed to each other around the first hinge shaft 132. [ (150a, 150b) are fixedly arranged so as to oppose each other in such a manner as to be able to expand and contract.

The second frame fixing bracket 140 is disposed facing the second wheel connecting bracket 141 which is fixedly connected to the rear wheel 121 in a state where the second frame fixing bracket 140 is firmly fixed to one side of the loading frame 110 A pair of air tubes 160 constituting a bellows-type air spring 160 are provided between the second frame fixing bracket 140 and the second wheel connecting bracket 141 by being connected and fixed to each other around the second hinge shaft 142. [ (160a, 160b) are fixedly arranged so as to face each other in such a manner that they can expand and contract.

At this time, the first wheel connecting bracket 131 is positioned in front of the front wheel 120, and the second wheel connecting bracket 141 is positioned behind the rear wheel 121.

The first and second wheel connecting brackets 131 and 141 are disposed on the front wheel 120 and the rear wheel 121, respectively, The first and second frame fixing brackets 130 and 140 and the first and second frame fixing brackets 130 and 140 and the first and second frame fixing brackets 130 and 140, And the two-wheel connecting brackets 131 and 141 are disposed in parallel with the front wheels 120 and the rear wheels 121 on both sides of the stacking frame 110.

A first tension shaft 134 for connecting the first frame fixing bracket 130 and the first wheel connecting bracket 131 is provided below the bellows type air spring 150 on the front wheel 120 side And a second tension shaft 144 connecting between the second frame fixing bracket 140 and the first wheel connecting bracket 141 is provided below the bellows-type air spring 160 on the rear wheel 121 side.

At this time, the first and second tension shafts 134 and 144 are in a state of being perpendicular to the first and second fixing shafts 135 and 145, respectively, one end of which passes through the inner peripheral surface of the first and second frame fixing brackets 130 and 140, And the other end of the first and second wheel connecting brackets 131 and 141 is coupled to one side of the inner circumferential surface of the first and second wheel connecting brackets 131 and 141 by a separate coupling.

The second frame fixing bracket 140 located on both sides of the loading frame 110 is provided with a lamp mounting plate 190 which is vertically connected and fixed so as to mount an indicator lamp on the rear side, It is possible to induce safe driving by displaying the running state in the following rearward vehicle.

Hereinafter, the operation of raising and lowering the loading frame for vehicle loading in the multi-purpose trailer for vehicle transportation according to the present invention will be described.

As described above, the trailer 100 according to the present invention is configured such that the bellows-shaped air springs 150 and 160, through which the compressed air can flow in and out through the air supply system 170 provided on the stacking frame 110, The two frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are opposed to each other and are connected to each other through a first hinge shaft 132 and a second hinge shaft 142 so as to be rotatable, One end 131a of the first and second wheel connecting brackets 131 and 141 is rotatably fixed on the front wheel 120 and the rear wheel 121, 130 and 140 are fixed to both sides of the stacking frame 110, respectively.

When the vehicle is to be mounted on the trailer 100 according to the present invention having the above-described structure, the towing vehicle is equipped with a trailer (not shown) by using a coupler 111 located at the tip of the loading frame 110 100 so that the trailer 100 can be towed by the towing vehicle.

In this state, the mounting frame 110 is lowered to mount the vehicle on the mounting frame 110 so that the mounting lamp 112 on the rear side of the mounting frame 110 is positioned on the ground (as shown in Figs. 9 and 11) 200).

To this end, the operator operates the air compressor 174 and the solenoid valve 173 of the air supply system 170 according to the present invention to generate air in the air tubes 150a and 150b, 160a and 160b of the bellows- The bellows-shaped air springs 150 and 160 between the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are contracted.

Thus, a variable stroke is generated between the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 as the bellows type air spring 150 and 160 contract.

In the present invention, the shrinkage of the bellows-type air springs 150 and 160 causes the stacking frame 110 to be lifted up by the expansion force of the expansion of the bellows-type air springs 150 and 160 to form a force As the lifting force of the lifting frame 110 is released, the lifting frame 110 is lowered naturally in the following manner.

That is, as the bellows-type air spring 150 and 160 are contracted, the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are lowered about the first and second hinge shafts 132 and 142 And the first and second wheel connecting brackets 131 and 141 to which the one end portions 131a and 141a are respectively connected and fixed to the front wheel 120 and the rear wheel 121 are rotatably supported by the front wheel 120 and the rear wheel 121, 121 and the first and second frame fixing brackets 130 and 140 and the first and second hinge shafts 132 and 142 while being connected to the front wheel 120 and the rear wheel 121 And is rotated slightly downward about the first and second rotary shafts 133 and 143.

As the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are interlocked and lowered by a variable stroke corresponding to the contraction of the bellows type air spring 150 and 160, The stacking frame 110 fixedly connected to the frame fixing brackets 130 and 140 also naturally descends.

At this time, the shrinkage of the bellows-type air springs 150 and 160 is stopped when the mounting lamp 112 on the rear side of the stacking frame 110 comes into contact with the paper surface 200.

Particularly, when the front end portion of the stacking frame 110 is connected to the towing vehicle through the coupler 111 in the process of lowering the stacking frame 110 according to the present invention, Even if the bellows type air spring 150 between the first frame fixing bracket 130 and the first wheel connecting bracket 131 is contracted and a variable stroke is generated as the connected constant height is maintained, The portion of the loading frame 110 fixed to the fixing bracket 130 can not be lowered sufficiently.

Therefore, in the above case, the mounting lamp 112 may come into contact with the ground 200 in a state where a predetermined inclination is formed between the tip of the mounting frame 110 and the mounting lamp 112 behind the mounting frame 110 have.

When the mounting lamp 112 is brought into contact with the ground surface 112 by the lowering of the stacking frame 110 as described above, the transportation vehicle is moved through the mounting lamps 112 of the stacking frame 110, .

At this time, since the stopper means is provided on the loading frame 110 so that the wheels of the vehicle can be hooked and fixed, the loading vehicle 110 moves on the loading frame 110 when the trailer 100 is moved It is natural to be able to fix it.

After the transport vehicle is mounted on the stacking frame 110, the process of raising and lowering the stacking frame 110 to move the trailer 100 is performed in a reverse order to the lowering process of the stacking frame 110 do.

8 and 12, the air compressors 174 and the solenoid valves 173 of the air supply system 170 are operated to move the air tubes 150a and 150b of the bellows-type air springs 150 and 160, 160a and 160b to inflate the bellows-type air springs 150 and 160 between the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141, The first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are opened in accordance with the expansion of the bellows type air springs 150 and 160, The first and second wheel connecting brackets 131 and 141 move upward and downward relative to the first and second rotating shafts 133 and 143 which are the connecting portions of the front wheel 120 and the rear wheel 121, As shown in Fig.

At this time, the stacking frame 110 also naturally moves upward as the first and second frame fixing brackets 130 and 140 move upward.

In the present invention, when supplying and discharging compressed air to the bellows-shaped air springs 150 and 160 provided on the front wheel 120 and the rear wheel 121 via the air supply system 170, one solenoid valve 173 The operation of all the bellows-type air springs 150 and 160 is controlled simultaneously by opening and closing one solenoid valve 173 by configuring the air pipe 175 to be branched to both sides of the stacking frame 110 The air pipe 175 and the solenoid valve 173 are provided for independently controlling the bellows type air spring 150 on the front wheel 120 and the bellows type air spring 160 on the rear wheel 121, Of the present invention may be changed.

Particularly, the trailer 100 according to the present invention can be used not only for vehicle transportation but also as a multipurpose trailer for loading and transporting a specific cargo.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various changes, modifications and equivalents. Accordingly, the above description should not be construed as limiting the scope of the present invention defined by the limits of the following claims.

100: Trailer 110: Load frame
111: coupler 112: mounted lamp
120: front wheel 121: rear wheel
130: first frame fixing bracket 131: first wheel connecting bracket
132: first hinge shaft 133: first rotation shaft
134: first tension shaft 135: first fixing shaft
140: second frame fixing bracket 141: second wheel connecting bracket
142: second hinge shaft 143: second rotation shaft
144: second tension shaft 145: second fixing shaft
150, 160: bellows type air spring 150a, 150b, 160a, 160b: air tube
170: air supply system 171, 172: air tank
173: Solenoid valve 174: Air compressor
175: Air piping 176: Device box
180: a casters-type wheel 181:
190: Light mounting plate

Claims (5)

A loading frame 110 connected to the towing vehicle through a coupler 111 and capable of loading a vehicle and a plurality of front wheels 120 and rear wheels 121 installed on both sides of the loading frame 110, A vehicle-carrying trailer (1)
A plurality of first and second frame fixing brackets 130 and 140 fixed to both sides of the loading frame 110 adjacent to the front wheel 120 and the rear wheel 121,
The first and second frame fixing brackets 130 and 140 are opposed to each other so as to face each other and are connected to each other by first and second hinge shafts 132 and 142. One end 131a and 141a are connected to the front wheel 120 and the rear wheel 121) rotatably supported by the first and second rotating shafts (133, 143) via first and second wheel connecting brackets (131, 141)
The first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are connected to each other by the first and second hinge shafts 132 and 142 with the front wheel 120 and the rear wheel 121 being centered, The first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 on the upper side of the first and second hinge shafts 132 and 142 are coupled to each other in a surface- Bellows type air springs (150, 160) having a pair of air tubes (150a, 150b, 160a, 160b) capable of expanding and contracting according to the inflow and outflow of air,
And an air supply system (170) capable of injecting and discharging compressed air into the bellows type air spring (150, 160).
The method according to claim 1,
The air supply system 170 is configured to independently control expansion and contraction of the bellows type air spring 150 on the front wheel 120 and the bellows type air spring 160 on the rear wheel 121, General purpose trailer for vehicle transport.
3. The method according to claim 1 or 2,
The air supply system 170 is installed in a device box 176 provided at a front end portion of the stacking frame 110 and is provided with a bellows-shaped air spring 175, which is provided on the front wheel 120 and the rear wheel 121 via an air pipe 175, An air compressor 174 for compressing air so as to supply and discharge compressed air to and from the compressors 150 and 160 to supply the compressed air to the compressors 171 and 172 and the air compressors 171 and 172 for storing compressed air from the air compressors 174, , And a solenoid valve (173) for controlling the flow of compressed air on an air pipe (175) connecting between the air tanks (171, 172) and the bellows type air springs (150, 160) .
The method of claim 3,
First and second tension shafts 134 and 144 for connecting the first and second frame fixing brackets 130 and 140 and the first and second wheel connecting brackets 131 and 141 are provided below the bellows type air spring 150 and 160, The first and second tension shafts 134 and 144 are connected to the first and second fixing brackets 130 and 140 at right angles on the first and second fixing shafts 135 and 145, respectively, , And the other end of the first and second coupling brackets (131, 141) is inserted into and coupled to the inner circumferential surface of the first and second wheel connecting brackets (131, 141).
The method of claim 3,
And a caster-type wheel (180) connected to the foot leg (181) is further provided on a front end portion of the loading frame (110).

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