KR200388309Y1 - Trailer for the freight transport have a two column loading box - Google Patents

Abstract

The present invention relates to a cargo transport trailer having a two-stage loading box, the main purpose 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 capacity.

To this end, the trailer according to the present invention includes a side wall connected in the width direction perpendicular to the tow and the end of the running portion, 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 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 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, which are provided to load cargo in two stages, and the height of the upper loading box by the lifting device to change the height of the upper and lower, thereby maximizing the loading amount. A freight transport trailer with a two stacker.

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.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is to prevent the loss of logistics costs by maximizing the load of the cargo occupying a large load area compared to its own weight.

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.

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 towing portion, and a traveling portion formed at the rear end of the towing portion and arranged with a plurality of wheels so as to travel or brake on the road by the towing vehicle. To a freight transport trailer for loading freight into

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;

Elevating autonomous units arranged in a vertical direction in a 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 below the upper loading 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, when the post is viewed from the top, the first and second posts disposed on both outer sides in the longitudinal direction are formed longer in the vertical direction than the first and second posts disposed inward, so that the inner slope is naturally formed. .

In addition, the trailer 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;

An inclined member disposed a plurality of intervals apart from a predetermined interval on an upper portion of the bottom plate disposed in the longitudinal direction on the bottom surface of the guide groove of the guide bracket;

An actuating device disposed below 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 pinion gear mounted on the bottom surface of the bottom plate, a rack gear axially coupled to a gear bracket mounted on the bottom surface of the guide groove so as to engage with the pinion gear, and one end of the rack 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.

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 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 viewed from the direction "C" in Figure 3, Figure 5 is a 2D "D"-"D" As a cross-sectional view of the 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 line "F"-"F" of FIG. 8 is a cross-sectional view of the line 7 "G"-"G" showing the action of the cargo inclination device of the cargo transport trailer according to the present invention. (Hereinafter, the same configuration as the conventional configuration is given the same name. Explain and add only the signs.)

3 and 4, the cargo transport trailer 1 (hereinafter referred to as a "trailer") with a two-stage stacker according to the present invention is a lower stacker 100 and the lifting device 200, and the upper stacker 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.

The upper loading box 300 is disposed on the upper side of the lower loading box 100, and the upper loading box 300 is disposed in a plane on the upper side of the lower loading box 100 via the lifting device 200. (The upper loading box 300 will be described later.)

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 arrangement 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 the first, second post 210 ) 220, 250, 260, first and second hinge brackets 211, 251, a support frame 170, and an air bag 280.

The first posts 210 and 220 are rectangular pipes, which are arranged in the rear of the tow portion 11 and in the front width direction of the traveling portion 13, and the first posts 210 ( 220 is disposed symmetrically on both sides with respect to the center line (CL).

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 after the 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. The second posts 250 and 260 are also rectangular tubes and are formed with a small outer diameter. While being inserted into the first posts 210 and 220, the up and down sliding is easy.

Similarly to the first posts 210 and 220 described above, the second posts 250 and 260 are formed to have a short inside arranged on the vertical center line CL and a long one arranged outside. .

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

As shown in FIG. 4, the upper carrier 300 is disposed symmetrically on both sides with respect to the longitudinal center line CL.

Subsequently, the operation of the trailer 1 according to the present invention will be described with reference to FIG. 5.

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.

Next, the operation of the cargo inclination device 400 according to the present invention.

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 cargo is unloaded at the destination, the steering wheel (H) may be rotated in the opposite direction to the above operation.

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 the flatbed or lowbed trailer as a manufacturing technology in the art. ) And the elevating device 200 and the upper loading box 300, etc. can be added, applied to achieve the purpose of the subject innovation of course.

The present invention is not limited to the above-described specific preferred embodiment, and can be easily modified by anyone of 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.

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

Figure 2a is a side view showing a conventional wing body trailer for freight,

FIG. 2B is a longitudinal cross-sectional view of the line “A”-“A” in 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 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 viewed from the direction "C" in Figure 3,

5 is a cross-sectional view of the line 3 "D"-"D", showing a lifting device of the cargo 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.

* 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

Claims (6)

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 In the freight transport trailer to load the cargo in, 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, the cargo transport trailer having a two-stage stacker, characterized in that it comprises an upper stacker arranged in two rows in the longitudinal direction of the upper side of the lower stacker. The method of claim 1, 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 below the upper loading 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 a cargo transport trailer with a two-stage stacker, characterized in that consisting of an air bag supported in the middle of the upper frame. The method of claim 2, When the post is viewed in plan view from the top, the first and second posts disposed on both outer sides in the longitudinal direction are formed longer in the vertical direction than the first and second posts disposed inward, so that the inner slope is naturally formed. A freight transport trailer with a two-level stacker. The method of claim 1, The trailer is a cargo transport trailer having a two-stage stacker, characterized in that it further comprises a cargo inclination device disposed in both longitudinal directions of the towing unit and the running unit. The method of claim 4, wherein The cargo inclination device is formed with a guide groove recessed to the lower side, the guide bracket is mounted in the longitudinal direction on each side of the side frame disposed in both the longitudinal direction, the outer side of the towing and the running portion; 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; It is formed long to be inserted into the guide groove of the guide bracket, characterized in that it comprises a lifting bracket in which a plurality of guide rollers are arranged at the same interval as the inclined member in the lower longitudinal direction whose cross section is formed in a "┏┓" shape; Cargo trailer with two stackers. The method of claim 5, The actuator includes a rack gear mounted on a bottom surface of the bottom plate, a pinion gear axially coupled to a gear bracket mounted on a bottom surface of the guide groove so as to engage with the rack gear, and one end penetrates the pinion gear and the gear bracket. , The shaft is coupled, the other end is a cargo transport trailer with a two-stage stacker, characterized in that consisting of a working shaft protruding to the outside of the side frame.