KR100967241B1 - System for lifting cargo and wing body vehicles using thereof - Google Patents

Abstract

The present invention relates to a cargo lift system that can be applied to a cargo box bottom plate of a van for loading light loads of cargo loaded using a pallet, and more specifically, to a bottom plate of a cargo stacker. A lift device installed vertically by a predetermined height from a bottom plate, a transport device inserted between the lift device and the loaded cargo to move the cargo outwards of the storage box, and a load moved by the transport apparatus A cargo lift system including a cargo lowering system including a lowering means for descending to the ground and a cargo tray to which the cargo lifting system is applied are provided. Wing bar, characterized in that rotatably coupled in the inner direction of the D is about the vehicle.

Wing body vehicle, lifting device, conveying device, trolley, descending means, back door

Description

Loading system and wing body vehicle using it {SYSTEM FOR LIFTING CARGO AND WING BODY VEHICLES USING THEREOF}

The present invention relates to a cargo hoisting system capable of easily and quickly loading and unloading cargo loaded into a cargo box of a van, and a wing body vehicle having an improved back door structure to allow side loading of a loaded cargo.

Sandwich panels, which have recently been used as building materials, are about 13m to 15m long and weigh about 1 ton in a bundle. This belongs to a relatively light cargo, and when unloading from the loading box of the truck, it is generally used forklift or crane.

However, using forklifts or cranes not only costs additional costs such as service costs and fuel costs of forklifts or cranes, but also when a large number of trucks are waiting, a limited number of forklifts or cranes do all the unloading work. .

In addition, when a long sandwich panel is moved by a forklift or a crane in a construction site where various building materials are scattered, there is a risk of a safety accident, which is likely to cause human and property damage.

Subsequently, in the past, a conventional van or a top van was used to transport the sandwich panel. However, the backdoor of the conventional van, particularly the top van, was coupled to the support shafts provided at both sides and rotated outward of the loading bin. However, such a back door structure has a problem that is not suitable for the loading of the load, such as sandwich panel.

That is, in the case of the loaded cargo, loading on the side of the vehicle is the simplest and fastest, but the side loading is not possible due to the support shafts installed on both sides as described above.

The present invention is to solve the above problems, to provide a safe and rapid cargo lifting system and at the same time to provide a wing body vehicle that can be loaded and unloaded cargo easily and quickly.

The gist of the cargo lift system according to the present invention and the wing body vehicle using the same are as follows.

(1) A cargo hoisting system that can be applied to the bottom plate of a van loading box to load light loads of cargo loaded using pallets,

Guide holes are formed in each region formed by partitioning the bottom plate in front, rear, left and right;

A guide groove is formed in a longitudinal direction in the middle of the upper surface, a gear exposure hole is formed at one end of the guide groove, and a horizontal plate provided with a rotatable roller on the lower surface thereof, and a vertical plate extending vertically downward from both ends of the horizontal plate. Including, the casing is inserted into the guide hole to be elevated;

A cam for elevating the casing while rotating in contact with the roller; And

A lifting device configured to drive the cam;

Gear gear is installed in the lower part of the bottom plate so that a part of the gear exposure hole is exposed;

Drive means for rotating the gear gear; And

A trolley inserted between the casing and the pallet, the trolley having an uneven portion engaged with the tooth gear in the middle of the lower surface thereof to move the loaded goods loaded in the raised state of the casing outward; Wow,

And a lowering means for lowering the ground by mounting the trolley moved outwardly of the bottom plate by the rotation of the gear.

(2) The lowering means,

First and second frames positioned parallel to each other; A round bar having a linear motion inside the first and second frames and having two wire rings formed at an outer circumference thereof; An upper frame extending vertically from both ends of the round bar; A connecting rod connecting the end of the upper frame; One end is rotatably coupled to both ends of the connecting rod, the other end is a lower frame that is rotatably coupled with a linear motion at the outside of the first and second frames; A third frame connecting the other end of the lower frame; And a loading panel detachably coupled to the rectangular space formed by the upper frame, the round bar, and the connecting bar.

A first wire connecting the round bar and a third frame;

A second wire connected at one end to a wire loop of the round bar, and connected at a second end to a wire drum installed at a lower portion of the bottom plate;

And a drive means for rotating the wire drum.

(3) The length of the first wire in the state in which the round bar and the third frame are spaced apart as much as possible, and the length of the cargo lifting system according to (2) above, wherein the length of the upper frame and the lower frame is the same.

(4) a bottom plate to which the cargo lift system according to any one of the above (1) to (3) is applied, a front plate fixedly installed from a front end of the bottom plate, and extending vertically from a rear end of the bottom plate. A support shaft, a back door coupled to the support shaft so as to be opened and closed, a side door connected to the left and right sides of the bottom plate, a support frame connecting the front plate and the support shaft, and coupled to both sides of the support frame. Wings that can be opened and closed vertically by, having a loading box including a frame of the U-shaped cross-section coupled to enable the vertical opening and closing on both sides of the rear end of the support frame,

The support shaft is installed in the middle of the rear end of the bottom plate, the back door is coupled to the left and right sides of the support shaft, respectively, wing body vehicle, characterized in that the opening and closing of the inside of the loading box.

The cargo lifting system according to the present invention having the above configuration and the wing body vehicle using the same can be manufactured at low cost, and can expect efficient vehicle operation by reducing the cargo loading time, and can prevent safety accidents. You can get it.

Hereinafter, a preferred embodiment of the cargo lift system according to the present invention and the wing body vehicle to which the same is applied will be described in detail with reference to the accompanying drawings.

First, a cargo lift system that can be applied to a loading box of a van used for the transportation of light cargo will be described.

1 is a view for showing a cargo lifting system according to the present invention, Figure 2 is a view for showing a lifting device of the cargo lifting system according to the present invention, Figure 3 is a casing of another cargo lifting system in the present invention It is a figure for illustration.

As shown in FIG. 1, the cargo lift system according to the present invention is applied to the loading box 100 of a freight vehicle, and is composed of a lift device 10, a transfer device 40, and a lower structure 60.

The lifting device 10 functions to separate the cargo (not shown) from the bottom plate 2 to a predetermined height, and the transfer device 40 moves the cargo spaced apart from the bottom plate 2 in the outward direction of the vehicle body. It has a function of moving, the lowering structure 60 serves to transport the moved cargo to the ground.

Hereinafter, each configuration of the present invention having the above functions will be described in detail. First, the lifting device will be described.

As shown in FIG. 1, guide holes 29 are formed in each region formed by dividing the bottom plate 2 of the loading box 100 in front, rear, left, and right sides, and a lifting device in the guide hole 29. 10) is inserted to move up and down.

As shown in FIG. 2, the elevating device 10 includes a casing 11 inserted into the guide hole 29 to enable vertical movement, and a cam 14 for vertically moving the casing 11 according to rotation. , 14 '), and drive means for rotating the cams 14, 14'.

The casing 11 is a member for pushing up the cargo loaded by the upward movement, and has a horizontal plate having a length of about 1 m equal to the width of the sandwich panel, and extends vertically downward from left and right ends of the horizontal plate. It consists of a vertical plate. In the middle of the upper surface of the horizontal plate, as shown in Figures 2 and 3, the guide groove 22 is formed, and one end of the guide groove 22 is formed with a gear exposure hole (23). In addition, the center portion of the vertical plate is preferably cut so that the vertical movement of the casing 11 is possible without being disturbed by the camshaft 13.

In this case, between the vertical plate of the casing 11 and the side portion of the vehicle, as shown in FIG. 2, the roller 30 may be installed to prevent wear of the casing 11 due to vertical movement.

With continued reference to FIG. 2, the up and down movement of the casing 11 is made by cams 14, 14 ′ mounted to the bottom of the loading bin bottom plate. That is, the cams 14 and 14 rotatably coupled to the camshaft 13 are positioned in contact with the rollers 12 and 12 provided on the lower surface of the casing 11, thereby raising the casing 11 by the rotational movement. You can.

In this case, the rollers 12 and 12 function to prevent the cams 14 and 14 from directly contacting the casing 11 to reduce the occurrence of wear.

Next, a description will be given of a transfer apparatus for moving an elevated cargo positioned between the hoisting device and the loaded cargo.

Figure 4 is a view for showing a transfer device of the cargo lifting system according to the present invention, Figure 5 is a view for showing the lower surface of the trolley in the cargo lifting system according to the present invention. Here, Figure 4 omits the loaded cargo and wires for convenience of description.

Referring to FIG. 4, the transfer apparatus 40 of the present invention includes a trolley 46 inserted between the casing 11 and the loaded cargo to move the cargo, and an uneven portion 41 formed on the bottom surface of the trolley 46. ) Is composed of a gear gear (15) for linear movement of the trolley (46) and a drive means for rotating the gear (15).

The trolley 46 is composed of a body 43 and a tail member 44, as shown in Figure 5, the body 43 and the tail member 44 is coupled to each other by a hinge 45. .

Body 43 is a portion that is in contact with the lower portion of the cargo by the lifting device, it is preferable to be formed about the same as the horizontal plate length of the casing so as to lift the cargo safely.

A plurality of roller wheels 42 are formed on both sides of the lower surface of the body 43. In this case, the roller wheel 42 is preferably wide and densely arranged for stable movement of the trolley 46.

In addition, the concave-convex portion 41 is formed between the roller wheels 42 provided on both sides of the lower surface of the body 43 so as to be engaged with the gear. In this case, the uneven portion 41 is formed in the tail member 44 as well as the body 43 of the trolley 46, it is preferable to protrude further downward than the roller wheel 42.

That is, as the above uneven portion 41 protrudes more than the roller wheel 42, the trolley 46 can be accurately guided along the guide groove 22 formed in the middle of the upper surface of the casing 11, It can also be easily engaged with the tooth gear 15 is installed so that a part of the gear exposure hole 23 is exposed.

The tail member 44 is to completely separate the body 43 of the trolley 46 from the vehicle body, and is coupled by the hinge 45 to be folded to the top surface of the body 43.

As shown in FIG. 4, if the tail member 44 is not coupled to the body 43 of the trolley 46, even if the trolley 46 moves as much as possible by the rotation of the gear 15, approximately half of a Since it is located in the casing 11, it is impossible to start the descent of the cargo.

Accordingly, the inventors have coupled the tail member 44 of a 'length approximately equal to a to the rear end of the body 43, so that the body 43 of the trolley 46 can be completely separated from the casing 11. .

Specifically, since the concave-convex portion 41 is formed on the lower surface of the tail member 44 as described above, when the gear gear 15 is further rotated in the state as shown in FIG. 4, the portion a of the body is the casing 11. It can be mounted on the down structure 60 completely off.

Figure 6 is a view showing a state that the trolley loaded with cargo descends in the cargo lift system according to the present invention. Here, FIG. 6 is omitted for the convenience of explanation.

Referring to FIG. 6, since the tail member 44 is coupled by the body 43 and the hinge 45 so that the tail member 44 can be folded upward, the tail member 44 is started when the trolley 46 descends. It naturally folds upwards. As a result, the tail member 44 does not affect the cargo lowering operation at all.

7 is a view showing a state in which the cargo is separated from the bottom plate by the lifting device in the cargo lifting system according to the present invention. 7 omits the gears for convenience of description.

As shown in FIG. 7A, the pallet 8 and the cargo 9 are sequentially loaded on the bottom plate 2. In this state, the trolley 46 is inserted in parallel to the casing 11 in the space formed between the bottom plate 2 and the pallet 8.

In this case, since the uneven portion 41 protrudes further downward in the trolley 46 than the roller wheel 42, it can be easily aligned by the guide groove 22 formed in the horizontal plate of the casing 11. have.

When the trolley 46 is inserted and aligned, when the cam 14 installed on the bottom of the bottom plate 2 is rotated, as shown in FIG. 7B, the bottom of the horizontal plate of the casing 11 is located. As the installed roller 12 rotates, the casing 11 is raised.

As the trolley 46 pushes up the pallet 8 by the raising of the casing 11, the cargo 9 is spaced apart from the bottom plate 2 by a predetermined height. In this case, the height at which the cargo is separated from the bottom plate 2 is sufficient to allow the movement of the trolley 46, and approximately 5 cm is preferable.

Subsequently, the lowering means is required to pull the trolley in which the cargo is loaded from the casing and lower it to the ground. The lowering means of the present invention is composed of a lowering structure, a wire gradually connected to the lowering structure, a wire roll on which the wire is wound, and a driving means for rotating the wire roll.

8 is a perspective view of the lowering structure of the cargo lifting system according to the present invention, Figure 9 is a view for showing the operation of the lowering structure of the cargo lifting system according to the present invention, Figure 10 is a cargo according to the present invention Figure is a view showing a mounting panel detachably coupled to the upper portion of the lowering structure in the elevating system.

As shown in FIG. 8, the lowering structure 60 is composed of a plurality of frames and round rods.

More specifically, the first and second frames 61, 61 'positioned side by side with each other; A round bar 64 'having a linear motion inside the first and second frames 61 and 61', and having two wire rings 68 and 68 'formed at its outer circumference; Upper frames (62, 62 ') extending vertically from both ends of the round bar (64'); A connecting rod 64 connecting the ends of the upper frames 62 and 62 '; One end is rotatably coupled to both ends of the connecting rod 64, and the other end is a lower frame (63, 63) that is rotatably coupled while linearly moving outside the first and second frames (61, 61 '). '); And a third frame 67 'which is connected to the other ends of the lower frames 63 and 63'.

In this case, one end of the second wires 69 and 69 'is connected to the wire rings 68 and 68', and the other end of the second wires 69 and 69 'is a wire drum mounted to the lower portion of the vehicle body. Coiled on

In addition, since the fixing hangers 65 and 65 'are formed at one end of the first and second frames 61 and 61', the first and second frames 61 and 61 'may be inserted into and fixed to the grooves (not shown) formed in the side of the vehicle body. Accordingly, there is no shaking even when the cargo descends, thereby ensuring stability.

Subsequently, the round bar 64 'and the third frame 67' are connected by first wires 66 and 66 'to support the weight of the cargo, and the first and second frames 61 and 61 are connected. ') Is connected by at least one reinforcing frame 67.

The material of the frame or round bar used in the lowering structure of the present invention is preferably made of high-strength aluminum that is light and hard to bend for ease of installation and securing of supporting force.

Hereinafter will be described in detail with respect to the installation and operation method of the falling structure having the configuration as described above.

The lower structure 60 of the present invention is installed so that the upper frames 62 and 62 'are parallel to the ground.

As shown in FIG. 8, the lowering structure 60 has an equilateral triangular cross-section having an upper frame 62, 62 ′, a lower frame 63, 63 ′, and a first wire 66, 66 ′. Keep it.

Specifically, the round bar 64 'and the third frame 67' are connected with first wires 66 and 66 ', but the round bar 64' and the third frame 67 'are spaced apart as much as possible. In this case, the lengths of the first wires 66 and 66 'are the same as the lengths of the upper frames 62 and 62' and the lower frames 63 and 63 ', so that the side cross sections maintain an equilateral triangle so that the stable drop of cargo It is possible.

In the above state, when the second wires 69 and 69 'wound around the wire rolls (not shown) are gradually released, the round bar 64' and the third frame 67 'are respectively the first and second frames. (61, 61 ') is moved to the ground in a linear motion on the inside and outside.

In this case, the guide part is formed over the entire area inside the first and second frames 61 and 61 ', and rollers are formed at both ends of the round bar 64', thereby allowing linear movement in the guide part.

However, the guide part may be formed only at the lower end of the first and second frames 61 and 61 ′. This is because the lower frames 63 and 63 'and the third frame 67' do not rise to the upper ends of the first and second frames 61 and 61 'and perform linear movement only at the lower ends.

When the lowering of the round bar 64 'and the third frame 67' is continued, as shown in FIG. 9, the third frame 67 'is brought into contact with the ground, and the round bar 64' is lowered further. Finally, it lands in contact with the ground.

In this case, the upper frames 62 and 62 'are rotatably coupled inside the first and second frames 61 and 61', and the lower frames 63 and 63 'are first and second frames 61 and 61. ') Is rotatably coupled to the outside of the'), the length of the upper frame 62, 62 'and the lower frame (63, 63') are the same, so that the first, second frame (61, 61 ') and may overlap with each other.

In the lowering structure 60 which performs the lowering motion in the above manner, the trolley can be mounted on the rectangular space formed by the upper frames 62 and 62 ', the round bar 64', and the connecting bar 64. The loading panel is detachably coupled.

As shown in FIG. 10, a guide portion 71 is formed in the middle portion of the loading panel 70 so that the trolley may move in a predetermined direction. In addition, a stopper 72 is formed at one end of the loading panel 70 to prevent further movement of the trolley, and a hook portion 74 is formed at the other end of the loading panel 70 so as to be caught by the round bar.

In this case, it is preferable that the hook portion 74 cuts the position corresponding to the ring portions 68 and 68 'of the round rod 64' so as to be easily caught by the round rod 64 'shown in FIG. Do.

The configuration of the cargo lift system according to the present invention has been described in detail with reference to the accompanying drawings. Hereinafter, the cam, the gear gear, and the driving means for operating the lowering structure will be described in detail.

11 is a view showing a driving means of the cargo lift system according to the present invention, Figure 12 is a view for showing a shape in which the gear and the wire roller is coupled to the gear shaft in the cargo lift system according to the present invention. to be.

Referring to Figure 11, the drive means of the present invention is installed in the lower portion of the bottom plate (not shown). Specifically, the camshaft 13 is vertically provided on the drive shaft 26, and the camshaft 13 is formed in the camshaft 13 so as to contact the roller 12 provided in the lower part of the casing.

In this case, the drive shaft 26 and the cam shaft 13 is coupled by a bracket 27, the hydraulic cylinder 25 is formed at one end of the drive shaft 26. Accordingly, when the drive shaft 26 moves in the front-back direction by the hydraulic pressure of the hydraulic cylinder 25, the cam shaft 13 and the cam 14 is rotated, the casing can be raised. Here, the connection hole formed in the bracket 27 so as to enable forward and backward movement of the drive shaft 26 is preferably wider than the cross-sectional area of the drive shaft 26.

As shown in FIG. 12, a gear gear 15 is coupled to the gear shaft 21, and a wire roller 20 is coupled to both sides thereof. In this case, the wire roller 20 is coupled to the gear shaft 21 and the bearing 28 so as to be rotatable separately regardless of the rotation of the gear shaft 21.

Therefore, the second wires 69 and 69 'hanging on the wire roller 20 may be slowly released regardless of the rotation of the gear shaft 21.

By placing the wire rollers 20 on both sides of the gear 15 as described above, the second wires 69 and 69 'may not be damaged by being interrupted or contacted by the sharp gear 15.

As shown in FIG. 11, the wire drum 17 and the gear gear 15 are connected to the hydraulic motor 31 and the reduction gears 24 and 24 'separately, respectively, to rotate by applying power.

The reduction gears 24 and 24 'move the load drum 17 and the gear gear 15 gradually to lower and move the cargo more stably.

Although the driving means of the present invention has been described above, the driving means of the present invention is not limited thereto. That is, it should be understood that the type, number, formation positions, etc. of the driving means can be variously modified. For example, in the present embodiment, only the driving means formed separately on the left and right sides of the bottom plate are described, but it is also possible to minimize the power consumption by integrating the left and right driving means into one.

The cargo hoisting system according to the present invention operating by the above-described configuration and driving means can be applied to a wing body vehicle having a loading box. Hereinafter, a drawing of the wingbody vehicle to which the cargo hoisting system according to the present invention is applied will be described. It demonstrates in detail with reference.

1 is a view for showing a cargo lifting system according to the present invention.

Referring to FIG. 1, the wing body vehicle 200 according to the present invention includes a bottom plate 2 to which the above-described cargo lifting system is applied, and a front plate 1 extending and fixed vertically from the front end of the bottom plate 2. ), A T-shaped support shaft 89 extending vertically from the middle of the rear end of the bottom plate 2 and the back doors 81 and 81 'which are opened and closed inwards, respectively, connected to the left and right sides of the support shaft 89. , Side doors 91 connected to the left and right sides of the bottom plate 2, a support frame 4 connecting the upper middle part of the front plate 1 and the support shaft 89, and the support frame 4 thereof. Is coupled to both sides of the equipped with a storage box 100 including a wing (3) that can be opened and closed vertically by the hydraulic cylinder (88).

Here, the wing body vehicle according to the present invention is characterized in that it has a modified back door structure.

13 is a view showing a back door of a wing body vehicle according to the present invention.

As shown in Figure 13, the wing body vehicle 200 according to the present invention is characterized in that the support shaft 89 is formed in the center of the rear end of the bottom plate (2). That is, the left and right back doors 81 and 81 'are designed to be opened and closed by rotating inward of the loading box about the support shaft 89 to facilitate side loading of the load.

In this case, in order to compensate for the insufficient supporting force by forming only one support shaft 89, in the wing body vehicle according to the present invention, when any one of the left and right wings is open, the hydraulic cylinder 88 is controlled so that the other wing is closed. do. That is, the closed wing reinforces the bearing force.

For example, when the right wing and the back door are to be opened, the left wing and the back door are controlled to be closed. Then, when the cargo is loaded on the right side of the bottom plate and the right wing is closed to secure the supporting force, the left wing and the back door are opened to load the cargo. In addition, the present invention includes various supporting means in order to solve the problem of the supporting force.

For example, at the rear end of the supporting frame 4, a frame 5 having a U-shaped cross-section that can be opened and closed separately from the wing 3 may be formed. In this case, the frame 5 may be detachable from the wing 3 by forming a normal detachment means.

In other words, when loading a load longer than the storage box, the frame (5) is attached to the wing (3) to open together, and when loading a normal pallet cargo shorter than the length of the storage box, only the wing (3) is opened The frame 5 can function by holding it as it is.

In addition, when the cargo is loaded in all the left and right areas of the bottom plate 2, both the back doors 81 and 81 'are opened to the inside of the loading box. In this case, however, the back doors 81 and 81 'themselves can supplement the bearing capacity. That is, when the left and right back doors 81 and 81 'are opened to be in contact with each other, the left and right back doors 81 and 81' may be positioned side by side under the support frame 4 to support the supporting force.

In addition, the frame 5 may be fixed to the bottom plate 2 by the fixing means (7). That is, the fixing grooves 90 and 6 are formed in the frame 5 and the bottom plate 2, respectively, and the frame 5 is opened by inserting and connecting the fixing means 7 to the fixing grooves 90 and 6. If not, it can be firmly fixed to ensure stability.

As described above in detail a preferred embodiment of the cargo lift system according to the present invention and a wing body vehicle to which the same is applied, the scope of the present invention is not limited to the above embodiment. For example, the above embodiment has been described only for the lowering structure consisting of the frame and round bar for lower production cost and ease of installation as the lowering means, it is also possible to use the hydraulic method if the lowering means can lower the cargo. Therefore, the scope of the present invention should be understood to include all modifications which can be grasped from the matter described in the claim.

1 is a view for showing a cargo lifting system according to the present invention,

Figure 2 is a view for showing a lifting device of the cargo lifting system according to the present invention,

3 is a view for showing a casing of another cargo lifting system in the present invention,

4 is a view for showing a transfer device of the cargo lift system according to the invention,

5 is a view for showing the lower surface of the trolley in the cargo lift system according to the invention,

Figure 6 is a view for showing a state that the trolley loaded with cargo descends in the cargo lift system according to the present invention,

7 is a view showing a state in which the cargo is separated from the bottom plate by the lifting device in the cargo lifting system according to the present invention,

8 is a perspective view of the lowering structure of the cargo lifting system according to the present invention;

9 is a view for showing the operation of the lowering structure of the cargo lifting system according to the invention,

10 is a view showing a loading panel detachably coupled to the upper portion of the lowering structure in the cargo lifting system according to the present invention;

11 is a view for showing the driving means of the cargo lift system according to the invention,

12 is a view for illustrating a shape in which a gear and a wire roller are coupled to a gear shaft in a cargo lift system according to the present invention;

13 is a view for showing a back door of the wing body vehicle according to the present invention.

* Explanation of symbols for the main parts of the drawings

2: bottom plate 3: wing

10 lifting device 11: casing

15: Gear Gear 20: Wire Roller

22: guide groove 23: gear exposure hole

24, 24 ': reducer 28: bearing

29: guide ball 30: roller

40: feeder 41: uneven portion

42: roller wheel 43: body

44: tail member 45: hinge

46: trolley 60: lowering structure

70: loading panel 71: guide part

72: stopper 81, 81 ’: back door

89: support shaft 100: loading box

200: wing body vehicle

Claims (4)

delete In the cargo hoisting system installed on the bottom plate of the van, the cargo loading and unloading system which loads the light loads loaded by pallets, A guide hole drilled in each area formed by dividing the bottom plate into front, rear, left and right, and inserted into the guide hole, the gear exposure hole is formed in one end of the guide groove formed in the longitudinal direction in the middle of the upper surface, the roller is installed on the lower surface A casing comprising a horizontal plate, a vertical plate extending vertically downward from both ends of the horizontal plate, a cam rotating in contact with the roller so as to raise and lower the casing, and driving means for rotating the cam. A lifting device; Is inserted between the casing of the elevating device and the loaded goods, the gear is installed in the lower portion of the bottom plate exposed through the gear exposure hole, hinged to the body and the rear end of the body is folded upward A conveying device comprising a trolley formed with a concave-convex portion which is engaged with the gear and inserted into the guide groove in a lower middle of the body and the tail member; And It is installed on the bottom plate so as to be adjacent to one side of the transfer device, the first and second frames arranged in parallel with each other, coupled to the inner side of the first and second frames for a linear movement, two wires on the outer peripheral portion An annular rod formed with a ring, an upper frame extending vertically from both ends of the annular rod, a connecting rod connecting the front end of the upper frame, one end rotatably coupled to the connecting rod, and the other end of the first and second frames The lower frame is rotatably coupled to the linear motion at the outside of the third frame, the third frame connecting the other end of the lower frame, and detachable on the rectangular space formed by the upper frame, the round bar and the connecting rod It is coupled to be possible, the middle of the upper surface consists of a loading panel in which a concave guide portion is formed along the longitudinal direction, The material of the frame, the rod and the connecting rod is a descending structure made of high-strength aluminum, a first wire connecting the round rod and the third frame, one end connected to the wire ring portion, and the other end of the bottom plate of the bottom plate. A descending means consisting of a second wire connected to a wire drum installed in the drive unit, and driving means for rotating the wire drum; Freight lifting system comprising a. delete A bottom plate on which the cargo lift system according to claim 2 is installed, a front plate fixedly installed vertically from the front end of the bottom plate, a support shaft extending vertically from a rear end of the bottom plate, and the support shaft A back door coupled to the rear door, side doors coupled to both sides of the bottom plate, a support frame connecting the front plate and the support shaft, and coupled to both sides of the support frame to be opened and closed by a hydraulic cylinder. Is equipped with a wing box, which is coupled to both sides of the rear end of the support frame and the c-shaped cross-sectional frame that is opened and closed up and down, The support shaft is installed in the middle of the rear end of the bottom plate, the back door is coupled to each of the left and right sides of the support shaft wing body vehicle, characterized in that the opening and closing of the inside of the loading box.

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