Truck having cargo box with variable height

Abstract

The present invention relates to a truck having a cargo box with variable height, and may provide the cargo box comprising: a compartment frame vertically installed on four corners of the cargo box and a cylinder provided therein; and a vertical movement frame which is connected to the ceiling portion of the cargo box so as to increase or decrease the volume of the cargo box through vertical movement synchronized with the cylinder. Therefore, a vehicle can carry out transportation effectively according to the cargo loaded thereon, and moreover, a tail gate is configured by using a rear shutter provided behind the cargo box, and at the same time, sliding-type opening / closing doors are applied to both sides of the cargo box, so as to improve the efficiency of utilization in loading and unloading objects. In addition, the cargo loaded in the cargo box can be prevented from being contaminated with lubricating grease necessary for the vertical movement of the cylinder and the vertical movement frame.

Description

Variable-height top truck

[0001] The present invention relates to a truck with a variable loading height, and more specifically, to a truck with a variable loading height that allows efficient transportation by loading the height of the loading box of a truck vehicle that loads and transports cargo according to the cargo loading amount, and also increases the usability of both sides and the rear (tailgate) side of the loading box.

[0002] In general, a truck is a type of vehicle that loads and transports cargo, and is classified into a top car whose cargo loading space is covered by a roof panel or side cover panel, and a truck whose cargo loading space is open.

[0003] The loading compartment of a truck is a rectangular solid that is shielded by a roof panel or side cover panel except for the double-door opening door at the rear or the single-door opening door at the side to protect the cargo from the outside. It is mainly used as a multi-purpose truck to transport cargo such as parcel cargo or small items.

[0004] In the case of relatively large trucks, examples include wing trucks equipped with wing covers that can be rotated to load and transport moving goods or relatively large cargo.

[0005] Mainly, the top car has the advantage of safely protecting the cargo by having the cargo loading space shielded from the outside, but has the disadvantage of having limitations in loading cargo with a large vertical height because the loading and unloading paths of the cargo are limited by the doors described above, and the height between the floor of the loading space and the ceiling of the roof panel is fixed.

[0006] When increasing the vertical height of the loading space to load cargo of various heights, there is a problem of not being able to enter underground parking lots or roads with limited height.

[0007] In particular, since the height of the loading box is always fixed even if the cargo loaded in the loading box is not much or is empty, it is difficult to enter an underground parking lot where the height of the vehicle that can enter is limited to 2m to 2.3m.

[0008] Because of this, trucks such as delivery vehicles cannot enter underground parking lots because their loading height is higher than 2 to 2.3 meters.

[0009] In addition, even when the cargo box is empty, as described above, the cargo box of the top car is manufactured to be relatively high, so it experiences a lot of air resistance during operation, and thus must accept the disadvantage of reduced fuel efficiency during long-distance driving.

[0010] Therefore, there are trucks that are manufactured with a low loading height to reduce air resistance and load relatively small amounts of cargo, but this has the problem of increasing fatigue of the cargo delivery person because the truck driver has to repeatedly unload the cargo loaded in the loading box with a height of 1.5 m, and thus has to bend his upper body to unload the parcel.

[0011] In order to resolve the above-mentioned issues, when examining the technology related to variable loading of a top car, Korean Patent No. 10-2565026 (hereinafter referred to as “Patent Document 1”) and Korean Patent No. 10-2313103 (hereinafter referred to as “Patent Document 2”) are disclosed as source technologies.

[0012] The above patent document 1 relates to a truck with a height-adjustable loading box that can adjust the height of the loading box to suit the loading amount of cargo and the unloading site situation.

[0013] A loading box including a floor part installed on a body of a vehicle, a main body part that is coupled to surround the edge and upper part of the floor part to form a loading space part capable of loading cargo inside the floor part, and is coupled to be movable up and down with respect to the floor part so as to expand or contract the loading space part; a plurality of height adjustment parts that are installed vertically inside the loading box and move the main body part up and down with respect to the floor part to adjust the height of the loading box; and a controller that controls the operation of the height adjustment parts.

[0014] The height adjustment unit further comprises a first lifting unit to a fourth lifting unit which are respectively arranged at four different corners inside the loading box, the lower part of which is fixed to the lower part of the loading box and the upper part of which is fixed to the upper part of the loading box, and a height measuring unit which measures the height of the loading box; and the height measuring unit comprises a first distance sensor to a fourth distance sensor which is installed on the bottom or upper part of the loading box corresponding to the first lifting unit to the fourth lifting unit and which measures the distance between the bottom part of the loading box and the upper part of the loading box, and the controller independently controls the operations of the first lifting unit to the fourth lifting unit so that the distance values ​​measured by the first distance sensor to the fourth distance sensor are maintained to be the same or within a set allowable distance range, and further comprises a plurality of loading height measuring sensors which are installed spaced apart from each other on the lower surface of the upper part corresponding to an area where cargo can be loaded and which measure the loading height of the cargo.

[0015] The height adjustment of the loading box of Patent Document 1 described above is achieved by independently adjusting the height of the upper box relative to the lower box by each lifting unit provided at four points within the lower box, thereby allowing the upper box to be raised and lowered to expand the internal volume of the loading box. However, regardless of whether the upper box is raised or lowered, the sides of the lower box are blocked, so the utilization of the sides is very low except for the rear shutter.

[0016] In other words, the utility of the cargo is low because the cargo can only be unloaded by opening and closing the shutter on the tail side, which is limited to loading and unloading cargo.

[0017] In addition, the four-point lifting unit installed inside the lower body interferes with the cargo loaded inside, causing problems such as contamination of the cargo or contact with the user's body due to grease, etc. required to operate the lifting unit.

[0018] In addition, although the above lifting unit is installed at four points, since the operating operating rod is directly connected to the bottom side of the upper body, there is a problem that stability is reduced when the upper body is raised and lowered, and noise and scratches occur due to interference with the inner surface of the upper body when the raising and lowering operation is performed to cover the lower body.

[0019] The above patent document 2 is a structure in which the height of the loading box of a top car is variable, and when the roof panel is raised and lowered by driving the vertical lifting member, the front cover, both side covers, and the rear cover, each joint of which is connected to be flexibly connected, are simultaneously raised by the extended amount to set the height of the loading box high, and conversely, when the vertical lifting member induces a downward movement, the front cover, both side covers, and the rear cover are lowered accordingly, covering the outer side of the front sandwich panel and the side sandwich panel that have been blocked, and the rear cover is manufactured to have a sufficient length to cover the rear of the loading box for loading or unloading goods, so that the loading box can be varied even at a low height.

[0020] However, in Patent Document 2, the lifting structure for raising or lowering the roof panel of the loading box is driven by a motor constituting the lifting drive member and the engagement of a bevel gear to rotate each vertical rotation axis, thereby creating a lifting condition for the guide block provided on the vertical rotation axis. Although the vertical rotation axis is not shown in detail, the guide block is raised and lowered in the rotational direction of the vertical rotation axis by a screw axis, and overall, there is a problem that it takes a long time to change the height of the loading box.

[0021] In addition, the above-described operation has the disadvantage that if the front, rear, and side covers are partially deformed by external force, they may become caught in the process of being stored and withdrawn into the inside of the roof panel, making it impossible for them to operate properly.

[0022] The present invention has been invented to solve the above-mentioned problems of the related art, and its purpose is to provide a truck with a variable loading height that allows for efficient transportation by loading the height of the loading box of a truck vehicle that loads and transports cargo according to the cargo loading amount, and also increases the usability of both sides and the rear side of the loading box.

[0023] According to the present invention for achieving the above object, a variable-height loading platform truck according to an embodiment of the present invention comprises: a compartment frame vertically installed upright on the upper four corners of a floor portion perpendicular to a side of a loading platform, each having an internal space; a vertical frame installed adjacent to the compartment frame and having a guide groove on the inside; a support frame fixedly installed on both sides to vertical frames facing each other in the front and rear directions to connect and support both side and front sides of the loading platform, respectively; a cylinder vertically installed within the compartment frame; an elevating frame having a lower portion guided on the inside of the compartment frame, an operating rod end of the cylinder connected thereto to be vertically elevated, and an upper portion connected to a ceiling panel of a loading platform and a ceiling frame to which the ceiling panel is attached and fixed; a rotating shaft having both ends connected to a support installed on the ceiling frame; a side shutter having one end wound in a roll shape on the rotating shaft and the other end fixed to the support frame; And it is characterized by comprising a guide frame provided on one side of the above lifting frame and guided to be lifted up and down on the vertical frame by the cylinder while guiding both ends of the front shutter, side shutter, and rear shutter.

[0024] According to the present invention, the space between the support frames on both sides of the loading box and the floor and the vertical frames corresponding to each other from the floor is characterized in that a sliding door is provided on either side or both sides of the loading box to load or unload goods into or from the internal space of the loading box.

[0025] According to the present invention, a guide member is vertically arranged on the inside of the compartment frame, and a guide groove is formed on the outside of an elevation frame guided to the compartment frame to be raised and lowered by being in close contact with the guide member.

[0026] The guide member according to the present invention is characterized in that it is made of MC nylon material having a rectangular cross-section.

[0027] According to the present invention, an outer cover is attached and installed on the front and both sides of the edge perimeter surface of the ceiling frame, and the outer cover accommodates the upper portion of the compartment frame, and the lifting frame is lowered by a cylinder only up to the upper portion of the support frame installed horizontally on the vertical frame, so that the side sliding door of the loading box is always secured on the outer side, and the opening and closing of the door is performed.

[0028] According to the present invention, a variable-height loading box truck comprises a compartment frame vertically installed at each of the four corners of the loading box and a cylinder provided inside the compartment frame, and an elevation frame connected to the ceiling of the loading box so that the volume of the loading box can be expanded or reduced by raising and lowering in synchronization with the cylinder, thereby enabling efficient transportation of the vehicle depending on the cargo to be loaded. In addition, a tailgate is configured using a rear shutter provided at the rear of the loading box, and sliding doors are applied to both sides of the loading box to increase the usability of loading and unloading goods. In addition, a loading box can be provided that can prevent cargo loaded inside the loading box from being contaminated by lubricating grease required for the raising and lowering operation of the cylinder and the elevation frame.

[0029] Figure 1 is a side view showing the top car of the present invention.

[0030] Figure 2 is a photograph showing the rear part of the loading box in Figure 1.

[0031] Figure 3 is a cross-sectional view taken along line AA of Figure 1 showing the loading box of the present invention.

[0032] Figure 4 is an enlarged cross-sectional view of a portion of Figure 3 showing the installation of a cylinder in a compartment frame according to the present invention and the positioning of a guide frame in a guide groove of a vertical frame.

[0033] Figure 5 is a cross-sectional view of a loading box in which a front shutter, a side shutter, and a rear shutter are arranged according to the present invention.

[0034] Figure 6 is a rear view of a top car showing a state in which a rear shutter according to the present invention is installed.

[0035] Figure 7 is a cross-sectional view of the lifting frame portion within the compartment frame in Figure 4, enlarged and cut away.

[0036] Figure 8 is a cross-sectional view showing a state in which a guide member is applied to a compartment frame according to one embodiment of the present invention and the lifting frame is guided.

[0037] Fig. 9 is a cross-sectional view showing a state in which the height of the loading box according to Fig. 4 is increased and varied.

[0038]

[0039] Hereinafter, the present invention will be described in more detail with reference to the attached drawings.

[0040] Prior to this, the terms or words used in this specification and claims should not be interpreted as limited to their usual or dictionary meanings, and should be interpreted as meanings and concepts that conform to the technical idea of ​​the present invention based on the principle that the inventor can appropriately define the concept of the term to explain his or her own invention in the best way.

[0041] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can be replaced at the time of filing this application.

[0042] The loading box of the top car according to the present invention is described as follows with reference to the attached drawings 1 to 9.

[0043] In a top car (1) equipped with a rectangular loading box (10) at the rear of the vehicle for loading and transporting cargo,

[0044] A compartment frame (20) having an internal space is installed vertically on each of the four corners of the upper side of the bottom portion (11) perpendicular to the side of the above-mentioned loading box (10).

[0045] In addition, a vertical frame (30) having a guide groove (31) on the inside is installed adjacent to one side of the compartment frame (20) on the vertical side of the compartment frame (20).

[0046] In the state where the four-point installed compartment frame (20) and vertical frame (30) are installed as described above, a support frame (40) is installed transversely on both sides of the vertical frame facing the front and rear sides to construct the loading box (30) in a form that connects and supports the two side parts and the front part of the loading box (10), respectively.

[0047] When the above support frame (40) is installed, the lower side of the support frame on the front side of the loading box (10) is blocked by attaching a separate fixing panel.

[0048] Meanwhile, within the compartment frame (20), a hydraulic cylinder (C) is vertically installed, connected to a hydraulic tank provided from the vehicle and a hydraulic hose. The compartment frame for installing the hydraulic cylinder is made into a column shape by folding a metal plate into a rectangular shape with one side open. The hydraulic cylinder (C) is an example, and a pneumatic cylinder or other height adjustment means may be used. When a pneumatic cylinder is used, it may be connected to a pneumatic tank provided on the vehicle and a pneumatic hose.

[0049] Inside the above compartment frame (20), a separate lifting frame (50) is installed so that its lower part can be guided so that it can be vertically raised and lowered. This lifting frame (500) is connected to the operating rod side of the hydraulic cylinder (C) to vertically raise and lower, and is connected to the ceiling panel (13) of the loading box (10) and the ceiling frame (15) to which the ceiling panel (13) is attached and fixed at the top.

[0050] The above-mentioned lifting frame (50) is also made by folding a metal plate into a rectangular shape with one side open to fit the inside of the compartment frame (20), and a partition plate connected to one end of the operating rod of the hydraulic cylinder is installed and attached in the internal space. The partition plate prevents the lifting frame from warping, thereby reinforcing durability, and at the same time, serves to relatively support the hydraulic cylinder through the operating rod of the hydraulic cylinder.

[0051] The open portions of the above compartment frame (20) and the lifting frame (50) are blocked with separate finishing plates.

[0052] That is, in the configuration of the ceiling panel and ceiling frame, an outer cover (17) is attached and installed on the front and both sides of the edge perimeter of the ceiling frame (15), and the outer cover (17) is a part where the lifting frame (50) is lowered by the hydraulic cylinder (C) only up to the upper part of the support frame (40) installed horizontally on the vertical frame (30) while accommodating the upper part of the compartment frame (20) when the ceiling panel (13) is lowered, and more specifically, it is a part that can cover the side part of the loading box excluding the opening / closing door (D) described later.

[0053] A sliding door (D) is installed between the support frame (40) and the floor (11) on both sides of the loading box (10) and the vertical frame (30) corresponding to the floor (11) in the space between the two sides, so that goods can be loaded or unloaded into the internal space of the loading box (10) from either side. The sliding door (D) is installed on both sides of the loading box (10) to enable loading or unloading of cargo.

[0054] The upper outer cover (17) of the above loading box (10) is lowered within a range that does not affect the opening and closing of the side sliding door (D) of the loading box (10) while always ensuring that the door is secured on the side outer side.

[0055] Meanwhile, on the ceiling frame (15), first to fourth rotation axes (S1 to S4) are installed on corresponding supports (15a). In addition, a front shutter (60) and a side shutter (70) are installed on the first to third rotation axes (S1 to S3), one end of which is wound in a roll shape and the other end of which is fixed to the support frame (40), and a rear shutter (80) is installed on the fourth rotation axle (S4), one end of which is wound in a roll shape and the other end of which is selectively fixed to the lower rear part of the loading box as a free end to form a tailgate of the loading box.

[0056] The above front shutter and side shutter are installed to form a space in which the upper space of the loading box expands by the opening action of the shutter, and the above rear shutter is installed to provide an entrance / exit of the tailgate in general when the upper part of the loading box expands together with the rear space of the front shutter and side shutter.

[0057] In addition, in the loading case of the present invention, a crossbar (82) is attached to the outer side of one end of the rear shutter (80), and the crossbar (82) is attached to a length longer than the width of both sides of the rear shutter and is supported horizontally at the outer lower side of the rear vertical frame (30) to form a tailgate.

[0058] Meanwhile, a guide frame (90) is provided on one side of the lifting frame (50) to guide both ends of the front shutter (60), side shutter (70) and rear shutter (80) so that they are lifted and guided to the vertical frame (30) by the hydraulic cylinder (C).

[0059] Meanwhile, in constructing the loading box of the present invention, guide members (22) are vertically arranged at multiple points on the inside of the compartment frame (20), and guide grooves (52) that are formed at multiple points on the outside of the lifting frame (50) guided by the compartment frame (20) and that are in close contact with the guide members (22) to perform lifting and lowering are formed.

[0060] It is preferable that the above guide member (22) be manufactured and applied using MC nylon material having a rectangular cross-section.

[0061] For reference, the above MC Nylon is an industrial resin manufactured by injecting nylon monomer (caprolactam) mixed with a reaction catalyst into a mold and polymerizing it by anion at atmospheric pressure. It is chemically identical to general NYLON-6, but MC Nylon has a high molecular weight that is 10 times that of NYLON-6 and a much higher crystallinity, so it has excellent chemical resistance, mechanical properties, wear resistance, self-lubrication, and corrosion resistance, and is one of the resins of the plastic series that is widely used as processed goods or lubricating materials.

[0062] The operation of the variable-height loading truck of the present invention configured as described above is described as follows.

[0063] As shown in the attached drawing 1, the use of the rear loading box (10) of the top car (1) can be done by reducing the height of the loading box relative to the overall height of the vehicle depending on the amount of cargo loaded inside the loading box, or conversely, increasing it to secure a wider space.

[0064] Driving without cargo, that is, with the height of the loading platform as low as possible, can reduce air resistance, which has a positive effect on the vehicle's fuel efficiency, and provides the advantage of making it easier to enter and exit large supermarket parking lots that have relatively high height restrictions.

[0065] Conversely, by increasing the height of the loading box (10) to the maximum, it is possible to load a large amount of cargo and operate, which has the advantage of reducing transportation costs.

[0066] The height of the above loading box (10) is adjusted by operating the hydraulic cylinders (C) on the side of the compartment frame (20) vertically installed from the floor (11) inside, and the four hydraulic cylinders are a group and the lifting frame is linked at the same time to raise or lower the operating rod, so that the height of the ceiling frame (15) including the ceiling panel (13) is raised by the appropriate operating distance of the hydraulic cylinder (C), thereby securing the maximum internal space of the loading box (10).

[0067] In the operation of raising the lifting frame (50) with the hydraulic cylinder (C) to secure the space of the loading box (10) as described above, the front shutter (60) and the side shutter (70), which have one end fixed to the support frame on the front and both sides of the loading box, are released from the wound state based on the first to third rotation axes (S1 to S3) which have both ends connected to the support (15a) on the ceiling frame (15).

[0068] In addition, in the above-described operation, the rear shutter (80) is released from the fourth rotation axis (S4) which is installed with both ends connected to the support (15a) installed on the ceiling frame (15) side as it rises as described above.

[0069] As the ceiling portion of the loading box (10) is raised as described above, the front shutter (60), side shutter (70), and rear shutter (80) that were wound around the first to fourth rotation axes (S1 to S4) are kept in a tensed state.

[0070] As described above, when the hydraulic cylinder (C) is operated in the opposite direction to release the shutter or reduce the height of the loading box (10) of the present invention, the lifting frame (50) is slowly returned to the inside of the compartment frame (20), and the front shutter (60), side shutter (70), and rear shutter (80) are rewinded to the first to fourth rotation axes (S1 to S4), thereby adjusting the height of the loading box.

[0071] As described above, in the elevation of the lifting frame (50), the guide frame (90) simultaneously ascends and descends along the guide groove (31) of the vertical frame (30), and serves to guide both ends of the front shutter (60), side shutter (70), and rear shutter (80), thereby realizing stable vertical height variable adjustment.

[0072] Meanwhile, regardless of the height variable adjustment of the loading box (10) as described above, the loading box of the present invention has the vertical frame (30) horizontally connected to the front and side sides of the loading box except for the rear side vertical frame, and the sliding door (D) provided between the support frame (40) on the side and the bottom part (11) of the loading box is always maintained, so that cargo can be loaded or unloaded from the side side of the loading box (10) rather than by opening and closing the rear shutter (800).

[0073] The above also has the advantage of ensuring safe delivery for cargo carriers, as cargo can be handled by opening the sliding door (D) of the loading box (10) from the sidewalk where pedestrians walk when the vehicle is stopped on the side of the road.

[0074] As described above, when adjusting the height of the loading box (10) by raising the rear shutter (80), the gate can be simply blocked by holding the horizontal bar (82) provided on the lower side of the rear shutter with respect to the rear gate portion and lowering it further while positioning it on the outer lower side of the vertical frame (30). In addition, a hanger or holder capable of fixing the horizontal bar portion is further provided on the lower side of the vertical frame, thereby preventing the rear shutter from being raised while the vehicle is in operation.

[0075] In the variable height adjustment of the loading box (10) according to the present invention, the lifting frame (50) that is raised and lowered by the hydraulic cylinder is raised and lowered in a state where the guide groove (52) formed on the outside of the lifting frame (50) is in close contact with a plurality of guide members (22) provided in the compartment frame (20), as shown in the attached Fig. 8, so that more stable raising and lowering is achieved by the guide member made of MC nylon material and lubricating grease.

[0076] Meanwhile, the hydraulic cylinder according to the present invention is positioned in the internal space of the compartment frame, and the lifting frame is guided within the compartment frame to be raised and lowered, thereby eliminating interference with cargo loaded in the internal space of the loading box and preventing the cargo from being contaminated by grease, which is a lubricant required for raising and lowering.

[0077] As described above, the present invention has been described with specific details such as specific components and limited examples and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those with ordinary knowledge in the field to which the present invention pertains can make various modifications and variations from this description.

[0078] Therefore, the idea of ​​the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the claims described below as well as the claims are considered to fall within the scope of the idea of ​​the present invention.

[0079]

[0080]

[0081]

[0082] The present invention relates to a tow truck with a variable loading height and has industrial applicability.

Claims

1. A compartment frame (20) that is vertically installed on the upper corner side of the bottom part (11) perpendicular to the side of the loading box (10), and each having an internal space; A vertical frame (30) installed adjacent to each of the above compartment frames (20) and having a guide groove (31) on the inside; A support frame (40) that is fixedly installed on both sides of a vertical frame facing the front and rear sides and connects and supports the two side and front sides of the loading box, respectively; A rising and falling cylinder (C) installed within the above compartment frame; An elevating frame (50) having a lower portion guided inside the above compartment frame (20), an operating rod end of the cylinder (C) connected thereto so as to be vertically liftable, and an upper portion connected to a ceiling panel (13) of a loading box (10) and a ceiling frame (15) to which the ceiling panel (13) is attached; A rotary shaft (S2, S3) with both ends connected to a support (15a) installed on the ceiling frame (15); and A side shutter (70) having one end wound in a roll shape on the above-mentioned rotation axis and the other end fixed to the above-mentioned support frame (40); and A variable-height loading truck, characterized in that it comprises a guide frame (90) provided on one side of the above-mentioned lifting frame (50) and guided by the cylinder (C) to be lifted and guided to the vertical frame (30) while guiding both ends of the side shutter (70).

2. In paragraph 1, A loading box height variable top car characterized in that a sliding door (D) is provided in the space between the support frame (40) and the floor (11) on both sides of the loading box (10) and the vertical frame (30) corresponding to each other from the floor (11), which can load or unload goods into or from the internal space of the loading box (10) on either side or both sides.

3. In paragraph 1, A variable-height loading truck characterized in that a guide member (22) is vertically arranged on the inside of the compartment frame (20), and a guide groove (52) is formed on the outside of an elevation frame (50) guided by the compartment frame (20) to be raised and lowered by being in close contact with the guide member (22).

4. In paragraph 3, A variable-height loading truck characterized in that the above guide member (22) is made of MC nylon material having a rectangular cross-section.

5. In paragraph 1, A variable-height loading truck characterized in that an outer cover (17) is attached and installed on the front and both sides of the edge perimeter of the ceiling frame (15), and the outer cover (17) accommodates the upper portion of the compartment frame (20) and the lifting frame (50) is lowered by a cylinder (C) only up to the upper portion of the support frame (40) installed horizontally on the vertical frame (30), so that the side sliding door (D) of the loading box (10) is always secured on the outer side and the opening and closing of the door is performed.

6. In paragraph 1, It further includes a rear shutter (80) that is wound in a roll shape on the fourth rotation axis (S4) and the other end is selectively fixed to the lower rear part of the loading box as a free end to form a tailgate of the loading box. A variable-height loading truck characterized in that a crossbar (82) is attached to the outer side of one end of the rear shutter (80), and the crossbar (82) is attached to a length longer than the width of both sides of the rear shutter and is supported horizontally at the outer lower part of the rear vertical frame (30).

Images