KR100530012B1 - Trailer for the freight transport have a two column loading box - Google Patents

Abstract

The present invention relates to a cargo transport trailer with a two-stage loading box, the main object of which is to reduce the manufacturing cost by a two-stage loading of a simple structure, and furthermore to reduce the logistics cost by the maximum loading amount.

To this end, the trailer according to the present invention includes a side wall connected in the width direction perpendicular to the end of the towing unit and the running unit, and a lower loading box connected to the lower end of each side wall is provided at a lower position than the upper surface of the towing unit and the driving unit;

A lifting device disposed in a plurality of vertically in the width direction of the rear of the towing unit and the front of the driving unit;

Each end is supported on the upper end of the elevating device, and includes an upper stack disposed in two rows in the longitudinal direction of the upper sides of the lower stack.

Accordingly, it is possible to load a lot of cargo occupying a large load area as compared to its own weight while reducing the manufacturing cost by a simple structure, there is an advantage of reducing the logistics cost.

Description

TRAILER FOR THE FREIGHT TRANSPORT HAVE A TWO COLUMN LOADING BOX}

The present invention relates to a cargo transport trailer, and more particularly, the upper and lower loading boxes provided to load cargo in two stages between the towing unit and the driving unit, and the height of the upper loading box by the lifting device up and down. The present invention relates to a freight transport trailer having a two-stage stacker with variable load.

The present invention is a domestic priority claim application for patent application No. 0062397, filed August 09, 2004.

In general, several are known for freight transport trailers that load cargo on top of a loading box of a trailer.

For example, a flatbed trailer FT as shown in FIG. 1 is a representative freight transport trailer, and the flatbed trailer FT includes a main frame MF provided with a towing unit PA and a running unit DA. .

The main frame MF is provided with a main beam MB spaced apart from the central portion in the longitudinal direction by a plurality of horizontal members, and a plurality of horizontal members (not shown) are installed in the width direction of the main beam MB. Side frames SF are arranged at both ends before and after the beam MB to form a combined frame state.

To the front of the main frame MF is provided with a towing unit PA protruding to the king pin (KP) to the lower side so as to be coupled to the coupler (Coupler) of the not shown, the rear of the tow vehicle The driving unit DA is provided with a plurality of wheels WE to travel or brake on the road.

A bottom plate (not shown) made of wood is disposed on the upper part of the main frame MF, so that cargo can be loaded on the upper part of the bottom frame using a forklift or a crane.

In addition, the outer surface of the side frame (SF) is provided with a plurality of locking members (LM) to facilitate the binding of the rope (not shown) for supporting the cargo.

However, the conventional trailer as described above has a problem that a loss of logistics cost is large because there is a limit of the loading amount in the case of the light weight of the cargo compared to the maximum loading amount (usually 26,000Kg).

To solve this problem, as shown in Figure 2a to 2c, the Republic of Korea Utility Model Registration No. 0273150 "wing body trailer with a variable loading box" has been disclosed, the contents are as follows.

Referring to Figure 2a, the wing body trailer (WT) having a conventional variable loading box is provided with a main frame (MF) provided with a lower loading box (LB) on the lower side between the towing unit PA and the running unit, this main The wall frame WF is provided in the longitudinal center portion of the frame MF so as to partition the left and right sides of the wing body trailer WT and support one side of the load.

As described above, the lift devices LE are disposed on both sides of the lower loading box LB based on the wall frame WF.

Referring to FIG. 2B, the lift device LE is inserted such that the first, second, and third posts P1, P2, and P3 may be extended in an antenna manner, and the first post P1 may have a lower load box LB. ), And the second and third posts P2 and P3 are sequentially inserted into the first post P1.

Four corners of the upper loading box UB are supported at each upper end of the third post P3 so that cargo can be loaded in two stages, and a support frame SF is disposed in the horizontal direction at the upper end of the second post P2. The lift cylinder LC is disposed under the support frame CF.

On the other hand, the other end of the wire rope WR, one end of which is fixed to the lower end of the first post P1, is connected to the lower end of the third post P3.

Accordingly, the second post P2 rises by the operation of the lift cylinder LC, and the third post P3 connected by the wire rope WR rises, and the lower portion of the upper stack UB, In other words, it is possible to secure the loading space of the lower stack (LB).

Cargo inclination device (TE) on both sides of the upper stack (UB) is arranged symmetrically.

Referring to FIG. 2C, the cargo inclination device TE includes a cylinder CD, first and second connection links L1 and L2, and an inclination member TM.

The cylinder CD is arranged symmetrically in the middle of the upper loading box UB, and one end of the first connecting link L1 is hinged to the rod RD at the end of the cylinder CD. The other end of the link L1 is hinged to the second connection link L2 integrally coupled with the inclined member TE, which will be described later.

The inclined member TM is disposed symmetrically in both outer longitudinal directions of the upper loading box UB, and the second connecting link L1 is also advanced and hinged to the end by the advancing operation of the cylinder CD. As the link link L2 is interlocked, the inclined member TE integrally mounted with the second link link L2 rotates and protrudes to the upper portion of the upper stack UB, thereby allowing the upper stack UB to be loaded. ) So that the cargo loaded on the top is inclined toward the wall frame (WF) to prevent the cargo loaded on the sharp curve road to fall outside.

However, the conventional wing body trailer as described above has a problem in that the structures of the lift device and the cargo inclination device are complicated, so that the manufacturing cost thereof is expensive.

In addition, since the weight of the tolerance is formed by the lift device and the cargo inclination device as described above, it is possible to divide the load into the upper and lower storage boxes, but the load is relatively limited.

In addition, since the operation of the lift device and the cargo inclination device is made separately, there is a problem in that the operation of the controller is complicated to increase the inconvenience of the drivers as the main users.

In addition, in order to adjust the height of the upper stacker to insert a fixed pin for each post, there was a problem that users are cumbersome.

The present invention has been made to solve the conventional problems as described above, it is an object of the present invention to maximize the loading of the cargo occupying a large load area compared to its own weight so that the loss of logistics costs do not occur.

In addition, another object of the present invention is to maximize the loading of the cargo, but to reduce the manufacturing cost with a simple configuration and at the same time reduce the logistics cost to obtain the trust of users.

In addition, another object of the present invention is to facilitate the inclination of the cargo by the upper loading without having a separate inclination device for the convenience of the drivers as the main user.

In addition, another object of the present invention is to facilitate the height adjustment of the upper load according to the height of the cargo to be loaded to facilitate the user's convenience.

The present invention for achieving this object is;

The upper part of the main frame consisting of a towing portion provided with a kingpin to be towed to the front end and a driving portion formed on the rear end of the towing portion and a plurality of wheels are arranged to travel or brake on the road by the towing of the tow vehicle A cargo transport trailer for loading cargo on

The trailer has a side wall connected in the width direction perpendicular to the end of the towing unit and the running portion, and a lower loading box connected to the lower end of each side wall provided on a lower position than the upper surface of the towing unit and the running portion;

A lifting device disposed in a plurality of vertically in the width direction of the rear of the towing unit and the front of the driving unit;

Each end is supported on the upper end of the elevating device, and includes an upper stacker arranged in two rows in the length direction of the upper both sides of the lower stacker.

In addition, the elevating device includes a first post having a lower end mounted above the towing unit and the driving unit;

A second post inserted into the first post so as to slide upward and downward, and having a first hinge bracket mounted at each upper end thereof;

A second hinge bracket hinged to the first hinge bracket and mounted on both sides of the upper and lower sides of the upper storage box;

A support frame horizontally disposed at a middle portion of the first post symmetrically disposed at both ends of the upper stacker;

The lower side is supported by the upper middle portion of the support frame, the upper side is made of an air bag supported on the middle portion of the upper frame.

In addition, the first and second posts are formed to be longer in the vertical direction than the first and second posts disposed on both sides of the first and second posts disposed in both sides in the longitudinal direction when viewed from the top, and naturally inward. It is characterized in that the inclination is formed.

In addition, the trailer according to the present invention further includes a cargo inclination device disposed in both longitudinal directions of the towing unit and the running unit.

In addition, the cargo inclined device is formed with a guide groove recessed to the lower side, the guide bracket is mounted in the longitudinal direction in each of the side frame arranged in the longitudinal direction, both sides of the tow and the running portion outer side;

A bottom plate disposed in a longitudinal direction on a bottom surface of the guide groove of the guide bracket;

It is disposed a plurality of predetermined intervals apart from the top of the bottom plate, the inclined portion that gradually increases from one side to the other side, the horizontal portion connected to the vertex of the inclined portion and the arc-shaped groove is formed in the middle portion, and the upper portion is caught on the horizontal side A inclined member having a jaw formed therein;

An operating device disposed below the guide bracket to move the inclined member to one side or the other side;

The lifting bracket is formed to be inserted into the guide groove of the guide bracket, and includes a lifting bracket in which a plurality of guide rollers are arranged at equal intervals with the inclined member in a lower longitudinal direction, the cross section of which is formed in a "┏┓" shape.

In addition, the actuator includes a rack gear mounted on the bottom surface of the bottom plate, a pinion gear axially coupled to a gear bracket mounted on the bottom surface of the guide groove so as to engage with the rack gear, and one end of the pinion gear and the gear bracket. It is penetrated and axially coupled, and the other end is composed of a working shaft protruding to the outside of the side frame.

In addition, the present invention is to the front end coupled to the tow vehicle is provided with a traction unit provided with a kingpin, and the rear end of the towing unit is formed on the rear end of the driving unit is a plurality of wheels are arranged to run or brake on the road by the driving of the tow vehicle It relates to a cargo transport trailer to load the cargo on the top of the main frame,

The trailer has a side wall connected in the width direction perpendicular to the end of the towing unit and the running portion, and a lower loading box connected to the lower end of each side wall provided on a lower position than the upper surface of the towing unit and the running portion;

A lifting device disposed in a plurality of vertically in the width direction of the rear of the towing unit and the front of the driving unit;

Upper and lower ends of each of which are supported at an upper end of the elevating device and arranged in two rows in the length direction of the upper both sides of the lower stacker;

It includes a height adjusting device disposed symmetrically on the bottom of both sides, left and right sides before and after the lower load to adjust the height of the upper load to move up and down by the lifting device.

In addition, the elevating device includes a first post mounted at the side of each side in the vertical direction when the lower load is viewed from one side, and a lower end having an opening formed at one side thereof;

A second post inserted into the first post so as to slide upward and downward, and having a first hinge bracket mounted at each upper end thereof;

A second hinge bracket hinged to the first hinge bracket and mounted at both ends of the lower side before and after the upper loading box;

An upper end is mounted at both ends of the upper and lower ends of the upper stack, and the lower end is formed of at least one air bag mounted on the towing unit and the upper surface of the driving unit.

In addition, the second post further includes a sliding member mounted on four surfaces so as to easily move up and down inside the first post.

In addition, the height adjustment device is a main body consisting of a first support plate, the second and third support plates symmetrically mounted on both sides of the first support plate, and the ridges arranged symmetrically on both the upper and lower sides of the first, second and third support plates. Wow;

The cylinder head is hinged to one side of the first support plate of the main body, and consists of a cylinder mounted on sidewalls formed vertically on both sides before and after.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of a cargo transport trailer with a two-stage loading box according to the present invention in detail.

Figure 3 is a side view showing one embodiment of a freight transport trailer according to the present invention, Figure 4 is a plan view of the freight transport trailer according to the present invention as seen in the direction "C" in Figure 3, Figure 5 "D" -A cross-sectional view of the "D" line, showing a lifting device of the freight transport trailer according to the present invention, Figure 6 is a side view showing a cargo inclination device of the freight transport trailer according to the present invention, Figure 7 is a "F"-FIG. Figure 8 is a longitudinal sectional view of the "F" line, Figure 8 is a cross-sectional view of Figure 7 "G"-"G" line showing the cargo inclined device of the freight transport trailer according to the present invention, Figure 9 is another of the freight transport trailer according to the present invention 10A is a perspective view showing an embodiment, and FIG. 10A is a perspective view seen from the line “H”-“H” of FIG. 9, and FIG. 10B is an exploded perspective view partially enlarged by a line 10A “I”, and FIGS. 11A to 11. 11c shows sequentially the action of another embodiment of the present invention. A cross-sectional view. (Hereinafter, for the sake of explanation, the same configuration as the conventional configuration will be described with the same name, and only the symbols will be described.

3 and 4, the cargo transport trailer 1 (hereinafter referred to as "trailer") with a two-stage loading box according to the present invention is a lower loading box 100 and the lifting device 200, and upper loading It is roughly classified into 300. (The technical configurations of the towing unit 11 and the traveling unit 13 are the same as in the prior art, and thus a separate description is omitted.)

Referring to FIG. 5, the lower stacker 100 is connected to the lower end of the side wall 110 vertically connected to the front end of the tow part 11 and the end of the traveling part 13 provided to the rear side of the tow part 11. And a position lower than the upper surface of the traveling portion 13.

A plurality of horizontal members 101 are also disposed in the lower stacker 100, and a bottom plate 102 made of wood or a metal plate is installed on the horizontal members 101. As such, the bottom surface ("h" display area) of the lower loading box 100 is formed higher than the minimum ground height (250mm) allowed by the road traffic law, there is no obstacle to road driving.

An upper loading box 300 is disposed on an upper side of the lower loading box 100, and the upper loading box 300 has a plane on both sides of the lower loading box 100 through a lifting device 200 to be described later. To be deployed.

Referring to FIG. 5, the lifting device 200 is disposed between the upper and lower loading boxes 100 and 300.

Lifting device 200 is disposed in the symmetrical form of each of the two vertically perpendicular to the rear of the towing portion 11 and the front width direction of the traveling portion 13, the lifting device 200 is a first post (210) ( 220, the second posts 250 and 260, the first and second hinge brackets 211 and 251, the support frame 270, and the air bag 280.

The first posts 210 and 220 are rectangular pipes whose cross sections are rectangular, and both sides of the first posts 210 and 220 with respect to the center line CL shown in the rear width direction of the towing portion 11 and the front width direction of the traveling portion 13. Are arranged symmetrically in.

Therefore, one side of the center line CL, that is, the first post 210 disposed on the inner side is short and the first post 220 disposed on the outer side is formed long, and when loading of the cargo is completed in the operation described below, Naturally, the inclination is formed inward, so that the external load of the cargo loaded on the upper stack 300 may be prevented without a separate inclination device.

As described above, the second posts 250 and 260 are inserted and disposed inside the first posts 210 and 220, and the second posts 250 and 260 are also rectangular tubes. It is formed with an outer diameter smaller than (210) (220) is easy to slide up and down.

Similarly to the first posts 210 and 220 described above, the second posts 250 and 260 have a shorter second post 250 disposed on the inner side with respect to the vertical center line CL and disposed on the outer side. The second post 260 is formed long.

As described above, a first hinge bracket 251 is installed at each upper end of the second posts 250 and 260, and an upper loading box to be described later in a hinge hole (not shown) formed above the first hinge bracket 251. The hinge hole (not shown) and the hinge pin 251a of the second hinge bracket 253 disposed below the hinge 300 are hinged.

In addition, the support frame 270 is horizontally disposed at each middle portion in the height direction of the first posts 210 and 220, and the lower side of the air bag 280 is disposed at the upper middle portion of the support frame 270. Is installed, the upper side of the air bag 280 is installed in the lower middle portion of the upper stack 300 to be described later.

As such, the upper loading box 300 is installed above the elevating device 200 of the present invention.

The upper stack 300 is a frame shape combined in a rectangular shape when viewed in a plane, a horizontal member (not shown) and a wooden bottom plate (not shown) on the upper side of the horizontal member similar to the lower stack 100 described above It is arranged.

The upper carrier 300 is arranged symmetrically on both sides with respect to the center line (CL).

Subsequently, the operation of the trailer 1 according to the present invention will be described.

First, the cargo is first loaded on the towing unit 11 and the driving unit 13, and then the air bag 280 of the elevating device 200 is easy to load the cargo into the lower loading box 100. When air is supplied to the air bag 280, the air bag 280 operates upward and moves the entire upper stack 300 upward.

Therefore, when the loading height ("H" display area) is secured, pallet (not shown) cargo on the upper portion of the lower loading box 100 can be easily loaded by using a forklift.

As such, when the loading of the cargo in the lower loading box 100 is completed, the upper loading container 300 is returned to its original state so as to be disposed immediately above the cargo loaded in the lower loading container 100, and the loading of the upper loading box 300 Cargo can also be loaded at the top.

In this case, since the height of the vertical stack of the first post 210, 220 and the second post 250, 260 is different from each other, the inclination (“θ”) is naturally formed inward. The upper post 300 is smoothly moved up and down by the second posts 250 and 260 sliding up and down by the air bag 280 in the first posts 210 and 220. .

Therefore, since the cargo loaded on the upper portion of the upper loading box 300 is inclined (“θ”) formed inward, the cargo loaded during the sharp curve road may be prevented from falling.

In addition, the upper and lower loading boxes 100, 300 formed in two stages in the middle of the trailer (1) can be loaded in two stages, there is an advantage to maximize the loading amount.

In addition, the trailer 1 according to the present invention further includes a cargo inclination device 400 disposed on both sides of the towing portion 11 and the running portion 13 in the longitudinal direction.

6 to 8, the cargo inclination device 400 according to the present invention includes a guide bracket 410, a bottom plate 420, an inclination member 430, an operation device 450, and a lifting bracket. 470.

The guide bracket 410 is mounted in the longitudinal direction inside each of the side frames 10a disposed in both the longitudinal direction and the both sides of the towing unit 11 and the driving unit 13.

The guide bracket 410 has a long guide groove 411 recessed downward when viewed from the cross section, so that the rack gear 451 of the operating device 450 to be described later is formed on the bottom of the guide groove 411. The long hole 413 is formed by a distance penetrating and moving in the horizontal direction.

The bottom plate 420 is disposed on the bottom surface of the guide groove 411.

The bottom plate 420 is disposed in the longitudinal direction on the bottom surface of the guide groove 411 of the guide bracket 410 in the form of a flat plate (flat).

A plurality of inclined members 430 are disposed above the bottom plate 420 at predetermined intervals.

The inclined member 430 is a model cut of a thick metal plate, and the inclined portion 431, the horizontal portion 433, and the locking jaw 435 are integrally formed.

The inclined portion 431 is formed at an angle that gradually increases from one side to the other side, and one end of the horizontal portion 433 is connected to a vertex of the inclined portion 431.

An arc-shaped groove 432 is formed in the middle of the horizontal portion 433, and a locking jaw 435 protruding upward is formed at one side of the horizontal portion 433.

The bottom plate 420 and the inclined member 430 are integrally mounted to move in the horizontal direction before and after by the operation of the operation device 450 to be described later.

On the other hand, the operating device 450 is provided on the lower side of the guide bracket 410, the operating device 450 is a rack gear 451, gear bracket 452, pinion gear 453, the operating shaft 455 Is done.

The rack gear 451 is mounted on the bottom surface of the bottom plate 420 through the long hole 413 formed in the guide groove 411. The pinion gear 453 engaged with the rack gear 451 is the guide. It is axially coupled to the gear bracket 452 attached to the lower surface of the groove 411.

On the other hand, one end of the operation shaft 455 through the pinion gear 453 and the gear bracket 452, the shaft is coupled, the other end is protruded to the outside of the side frame (10a).

The other end of the working shaft 455 can be easily rotated to one side or the other side using a handle HD by forming an ordinary key or spline.

On the other hand, the lifting bracket 470 is disposed in the guide groove 411 of the guide bracket 410.

The lifting bracket 470 is formed to have a long cross-section in the shape of "┏┓", and a plurality of guide rollers 471 are disposed at equal intervals at both lower ends.

The installation position of the guide roller 471 is preferably formed in the same position as the above inclination member 430 is installed.

Subsequently, with reference to FIGS. 7 and 8, the operation of the cargo inclination device 400 according to the present invention will be described.

First, when the handle H is connected to the other end of the operation shaft 455 and rotated to one side, the pinion gear 453 axially coupled with the operation shaft 455 rotates, and accordingly, the guide bracket 410 The rack gear 451 penetrating the long hole 413 formed in the bottom surface of the guide groove 411 of () moves in one horizontal direction.

At this time, the rack gear 451 and the attached bottom plate 420 is interlocked, and the bottom plate 420 and the inclined member 430 mounted also move in one horizontal direction.

As the inclined member 430 moves, the inclined portion 430 of the inclined member 430 is placed on one side of the inclined member 430, that is, the upper part of the bottom plate 420. It gradually moves upward along the 431 and is seated in the groove 432 formed in the middle portion of the horizontal portion 433 connected to the apex of the inclined portion 431.

At this time, the guide roller 471 seated in the groove 432 is caught by the locking jaw 435 formed at the end of the horizontal portion 433, the movement is no longer possible to complete the installation of the cargo inclination device 400 .

Accordingly, the elevating bracket 470 hinged with the plurality of guide rollers 471 is projected more than the loading surface of the towing portion 11 and the running portion 13, when the cargo is loaded on the upper portion, A slope is formed which naturally collects inwardly.

In addition, when the loading and unloading of the cargo at the destination is completed, the lifting bracket 470 of the inclination device 400 according to the present invention by rotating the handle (H) in the opposite direction of the above operation to the bottom of the guide groove 411 As it is inserted, it is flush with the bottom of the loading bin.

As described in detail above, the trailer (1) having a two-stage loading box according to the present invention is not only a wing body trailer, but also a lower loader (100) according to the present invention by restructuring a flatbed trailer or a low bed trailer as a manufacturing technology in the art. ) And the elevating device 200 and the upper loading box 300, etc., can also be achieved to achieve the object of the present invention.

9 is a side view showing another embodiment of the present invention, the length of the first post 210, 220 and the second post 250, 260 to lengthen the sidewall 110 of the lower stack 100. It is the same as the configuration of the above-described embodiment except that the height adjusting device 500 is installed on the lower side of the first post (210, 220) in close contact. Therefore, description of the same configuration is omitted.

In addition, the same configuration as the above-described embodiment will be described with the same name and the same reference numerals.

10A and 10B, the first posts 210 and 220 of another embodiment of the present invention have a long length as a rectangular tube, so that the front, rear, left, and right sides of the lower stack 100 are formed. It is disposed symmetrically on both sides of the right, both front and rear sides are interview-mounted with the side wall 110 of the lower carrier 100, the lower end is mounted on the upper upper carrier (100).

The opening 213 is symmetrically formed on one side of the lower end of the first posts 210 and 220, and the openings 213 facilitate the entry and exit of the height adjusting device 500 to be described later.

The second posts 250 and 260 are inserted into and disposed inside the first posts 210 and 220. (First and second hinge brackets disposed on the upper ends of the second posts 250 and 260, respectively. The configuration of (251) and 253 is the same as in the embodiment, and a description thereof will be omitted.)

Four sliding surfaces of the second posts 250 and 260 are disposed in the vertical longitudinal direction.

The sliding member 255 is in contact with the inner surfaces of the first posts 210 and 220, and the engineering plastic having lubricity of the material itself to facilitate sliding up and down of the second posts 250 and 260. (Engineering Plastic) or MC Nylon (MC Nylon) is preferably used.

On the other hand, the height adjustment device 500 is disposed at the lower end of the first post (210, 220).

Height adjusting device 500 is composed of a body 510 and a cylinder 530.

When the second and third support plates 512 and 513 are viewed in plan from both sides of the first support plate 511 such that the main body 510 has a planar cross section substantially the same shape as the known "H" beam shape, It is mounted in the horizontal direction perpendicular to each other, and the copper plate 515 is attached to each of the upper and lower ends of the first, second and third support plates 511, 512 and 513.

A hinge hole (not shown) is formed at one side of the first support plate 511 so as to hinge the cylinder head 531 of the cylinder 530 to be described later, and the hinge hole (not shown) is disposed in a direction in which the hinge hole (not shown) is formed. A long hole 513a is formed in the third support plate 513 so that the cylinder head 531 can pass therethrough.

On the other hand, one side of the main body 510, that is, the side wall 110, the cylinder 530 is disposed in a horizontal symmetrical form.

Subsequently, the operation of another embodiment of the present invention will be described with reference to Figs. 11A to 11C.

The state shown in Figure 11a is to facilitate the loading of the cargo (M), that is, the height of the pallet (Pallet) is formed high in the upper portion of the lower loading box 100, the height adjustment device 500 is a second The first posts 210 and 220 are inserted into and disposed in the openings 213 of the first posts 210 and 220 so as to support the lower ends of the posts 250 and 260.

In this state will be described a process of lowering the height of the upper loading box 300 in order to load the cargo formed with a low height in the lower loading box 100.

Referring to FIG. 11B, first, when the upper bag 300 is moved upward by operating the air bags 280 disposed at both ends of the upper bag 300, the upper bag 300 may be removed from each corner of the upper bag 300. The second posts 250 and 260 hinged by the first and second hinge brackets 251 and 253 also move upward.

At this time, while loading the cargo (M) formed with a low pallet height on the lower stack 100, at the same time through the opening 213 of the first post (210) (220) of the second post (250) (260) The main body 510 of the height adjusting device 500, which is disposed at each lower end, moves in accordance with the backward operation of the cylinder 530 arranged in one horizontal direction, and is exited from the opening 213.

Then, when the air injected into the air bag 280, which was operated to move the upper stack 300 upwards, is slowly removed, the upper stack 300 is also gradually lowered, the height of the height adjustment device 500 Since the main body 510 is out of the state, the lower ends of the second posts 250 and 260 are lowered to the upper portion of the lower load box 100 and the height is adjusted to be close to the upper portion of the low cargo M. will be.

On the contrary, in order to load the cargo M formed with a high height, as shown in FIG. 11B, the upper loading box 300 is moved to the uppermost position, and the high loading cargo M is loaded in the lower loading box 100. At the same time, the main body 510 of the height adjusting device 500 is inserted into the opening 213 of the first posts 210 and 220 by the cylinder 530 disposed horizontally on the side wall 110.

Then, when air is slowly injected into the air bag 280, the second posts 250 and 260 are also lowered as the upper stack 300 moves, and the first post 210 is already lowered. The main body 510 of the height adjusting device 500 inserted through the opening 213 of the 220 does not lower any more and stops.

Accordingly, as shown in Figure 11a, the upper stack 300 is also stopped in a state close to the upper surface of the cargo (M) formed high in height.

At this time, as in the above-described embodiment, the first and second posts 210 and 250 disposed at the center side of the lower stacker 100 are formed low, and the first and second posts 220 (outside the first and second posts 220) ( Since the height of the 260 is formed to be slightly higher, the air that has been injected into the air bag 280 is removed and the inclination ("θ" mark) is naturally formed when the upper stack 300 is placed at a desired height.

Accordingly, the height adjusting device 500 according to the present invention can load the cargo in the lower cargo box 100 irrespective of the height of the cargo, it is possible to maximize the loading space.

In addition, although the cylinder 530 in another embodiment is shown only with the foot type applied to both the head side and the rod side, this is a manufacturing technique in the art, which is a trunnion type. Alternatively, any of the clevis types can be used to achieve the desired purpose.

The present invention is not limited to the above-described specific preferred embodiment, and can be easily modified by anyone having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are intended to fall within the scope of the claims.

As described above, according to the present invention, there is an effect of reducing the logistics cost by maximizing the loading amount of the cargo occupying a large loading area compared to its own weight.

In addition, to reduce the manufacturing cost with a simple configuration, and at the same time to reduce the logistics cost, there is an effect of obtaining the trust of users.

In addition, the inclination of the cargo can be formed by one up, down operation of the upper loading box has the effect of promoting the convenience of the drivers as the main user.

In addition, the height adjustment device that automatically adjusts the height according to the height of the cargo loaded in the lower load has the effect to maximize the convenience of the user.

1 is a side view showing a conventional flatbed trailer for transportation,

Figure 2a is a side view showing a wing body trailer with a conventional two-stage loading box for freight,

FIG. 2B is a cross sectional view taken along the line “A”-“A” of FIG. 2A,

FIG. 2C is an enlarged view of the line “B” of FIG. 2B, which sequentially shows the operation of the cargo inclination device.

3 is a side view showing an embodiment of a freight transport trailer according to the present invention,

4 is a plan view of a freight transport trailer according to the present invention as viewed in the direction "C" of FIG.

5 is a cross-sectional view of the line 3 "D"-"D", showing a lifting device of the freight transport trailer according to the present invention,

Figure 6 is a side view showing a cargo inclination device of the cargo transport trailer according to the present invention,

7 is a longitudinal cross-sectional view of the line “F”-“F” in FIG. 6,

8 is a cross-sectional view of the line 7 "G"-"G" showing the action of the cargo inclination device of the freight transport trailer according to the present invention,

9 is a side view showing another embodiment of a freight transport trailer according to the present invention,

FIG. 10A is a perspective view as seen from line “H”-“H” in FIG. 9,

10B is an exploded perspective view showing an enlarged line “I” of FIG. 10A;

11A to 11C are cross-sectional side views showing the action of another embodiment of the present invention sequentially.

* Explanation of symbols for the main parts of the drawings

1; trailer 10; mainframe

11; towing unit 13; running unit

100; lower stacker 110; sidewall

200; lifting device 210, 220; first post

250,260; 2nd post 211,251; 1st, 2nd hinge bracket

270; support frame 280; air bag

300; upper stacker 400; tilt device

500; height adjusting device

Claims (10)

delete delete delete delete delete delete A towing portion provided with a kingpin to be combined with a towing vehicle at the front end, a towing portion formed at a rear end of the towing portion, and having a plurality of wheels arranged to travel or brake on a road by the towing vehicle; And a side wall connected in a width direction perpendicular to an end portion of the traveling portion, a lower storage box connected to a lower end of each side wall and provided at a position lower than an upper surface of the towing portion and the traveling portion, and in two rows in the length direction of the upper both sides of the lower loading portion. In the cargo transport trailer to load the cargo on the top of the main frame consisting of the upper stack, The trailer; When the lower stack is viewed from one side, each outer side in the vertical direction is mounted to the side wall, and a lower end having an opening formed at one side thereof is inserted into the first post and the inside of the first post. Sliding members are mounted on four sides to facilitate up and down sliding, and second posts each having a first hinge bracket mounted on each upper end, and hinged to the first hinge bracket, are located at both ends of the upper and lower sides before and after the upper stacker. A lift device comprising a second hinge bracket mounted on an upper side of the upper and lower ends of the upper loading box, and an air bag mounted on an upper surface of the fixed bracket mounted on the towing unit and the driving unit; A guide groove which is disposed in both longitudinal directions of the towing unit and the driving unit, and is formed with a guide groove recessed downward, and is mounted in the longitudinal direction in each of the side frames arranged in both the longitudinal direction and the outer side of the towing unit and the driving unit; A plurality of bottom plates disposed in the longitudinal direction on the bottom surface of the guide groove of the guide bracket, and a plurality of bottom plates spaced apart from each other by a predetermined distance, and inclined gradually increasing from one side to the other side, and connected to a vertex of the inclined portion. A horizontal portion having an arc-shaped groove formed at a portion thereof, an inclined member having a locking jaw upwardly formed at one side of the horizontal portion, and a rack gear mounted on a bottom surface of the bottom plate to move the inclined member to one side or the other side, A pinion gear axially coupled to a gear bracket mounted on a lower surface of the guide groove so as to engage with the rack gear, and one end of It is penetrated and axially coupled to the pinion gear and the gear bracket, and the other end is composed of an operating shaft protruding outward of the side frame, it is formed long to be inserted into the guide device of the guide bracket of the guide bracket and the guide bracket A cargo inclination device comprising a lifting bracket having a plurality of guide rollers arranged at equal intervals with the inclined member in a lower longitudinal direction, the cross section of which is formed in a "┏┓" shape; A first support plate symmetrically disposed vertically on both bottoms, left and right sides of the front and rear sides of the lower load, and on both sides of the first support plate so as to adjust the height of the upper load moving up and down by the elevating device; A main body which is symmetrically mounted on the second and third support plates, and the ridges arranged symmetrically on both the upper and lower sides of the first, second and third support plates to be inserted into and drawn out of an opening formed at one end of the first post; The cylinder head is hinged to one side of the first support plate, the cargo transport trailer with a two-stage stacker, characterized in that it comprises a height adjustment device consisting of a cylinder mounted on the side wall formed vertically on both sides before and after the lower load. . The method of claim 7, wherein The first and second posts are formed to be longer in the vertical direction than the first and second posts disposed at both outer sides of the longitudinal direction when the first and second posts are viewed in a plan view, and naturally inwardly inclined. Cargo transport trailer with a two-stage stacker, characterized in that is formed. delete delete