Lock hook support for container of vehicle, container of vehicle and engineering machinery

Abstract

The utility model relates to a lock hook support for a container of a vehicle, the container of the vehicle and engineering machinery. The latch hook support comprises a lug plate, a first base plate and a second base plate. One end of the lug plate is provided with a pin hole, and the other opposite end of the lug plate is provided with a first edge and a second edge which form an angle; the first base plate and the second base plate are respectively arranged on the first edge and the second edge; wherein the first pad and the second pad extend transversely to the corresponding first edge and second edge, respectively, so as to be attached to different walls of the container, respectively. According to the lock hook support, the two base plates are arranged on the lug plate, so that the lock hook support forms an integral welding structure which can be attached to the container of the vehicle, the supporting strength of the lock hook support and the connecting strength of the lock hook support and the container are improved, and cracking and deformation of a connecting part between the lock hook support and a bottom plate of the container are avoided; and the service life of the container is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, and particularly to a hook support for a cargo box of a vehicle, a cargo box including the hook support, and a construction machinery including the hook support or the cargo box. Background Art

[0002] Construction machinery, especially wide-body vehicles and mining vehicles, need to be able to carry goods, such as earthwork, coal blocks, crushed stones, etc. The cargo box of such vehicles is generally formed by splicing rectangular square plates, and includes a liftable rear cover formed by straight plates at the tail. For this purpose, the cargo box may further include a self-locking device cooperating with the rear cover, such as a hook and a chain, and a hook support connected to the bottom plate of the cargo box for installing the self-locking device. The lower end of the hook is pivotally connected to the hook support through a pin shaft, and the upper end of the hook abuts against the rear cover in a releasable manner. The chain is connected to the middle of the hook. When the chain is loosened, the hook rotates towards the side away from the cargo box and leaves the rear cover, thereby allowing the rear cover to flip for unloading goods. When the chain is tightened, the hook rotates towards the cargo box and abuts against and locks the rear cover.

[0003] The hook supports of the prior art are usually connected to the bottom plate of the cargo box by welding, and the welding position with the bottom plate may also be used to abut against the rear cover of the cargo box. However, the rear cover has a very high impact frequency with this position when it is closed, which easily causes the weld between the hook support and the bottom plate to crack and deform. In severe cases, the hook support or the bottom plate may be directly torn, resulting in the cargo box being unable to continue working. After being torn, it cannot be replaced and can only be repaired by welding, and even the service life after repair cannot be guaranteed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the above problems and / or other problems existing in the prior art.

[0005] To achieve the above purpose, according to one aspect of the utility model, a hook support for a cargo box of a vehicle is provided. The hook support includes an ear plate, a first backing plate and a second backing plate. The ear plate has a pin hole at one end and a first edge and a second edge forming an angle at the opposite end; the first backing plate and the second backing plate are respectively arranged on the first edge and the second edge; wherein, the first backing plate and the second backing plate respectively extend transversely to the corresponding first edge and second edge so as to be respectively attached to different walls of the cargo box.

[0006] According to an embodiment of the utility model, an included angle of substantially 90° is formed between the first edge and the second edge of the ear plate.

[0007] According to an embodiment of the present utility model, the hook support includes two ear plates arranged in parallel at intervals, and both the first backing plate and the second backing plate are configured to extend beyond the opposite sides of the two ear plates.

[0008] According to an embodiment of the present utility model, the ear plates are made of a generally triangular metal plate, and the first backing plate and the second backing plate are made of a generally rectangular metal plate.

[0009] According to another aspect of the present utility model, there is provided a cargo box of a vehicle, which includes a self-locking device for the rear cover and the hook support as described above. The self-locking device includes a hook, and the hook is pivotally connected to the hook support via a pin shaft passing through a pin hole on the hook support.

[0010] According to an embodiment of the present utility model, the hook support is installed on the bottom plate of the cargo box, wherein the first backing plate of the hook support is attached to the rear wall of the bottom plate, and the second backing plate of the hook support is attached to the bottom wall of the bottom plate.

[0011] According to an embodiment of the present utility model, the bottom plate of the cargo box includes a bottom plate main body and a cross beam arranged at the rearmost end of the bottom plate main body. The first backing plate is attached to the rear wall of the cross beam, and the second backing plate is attached to the bottom wall of the cross beam.

[0012] According to still another aspect of the present utility model, there is provided a construction machinery, which includes the hook support or the cargo box as described above.

[0013] According to an embodiment of the present utility model, the construction machinery is a wide-body vehicle.

[0014] The hook support of the present utility model adds a first backing plate and a second backing plate on the basis of the ear plates. The ear plates and the two backing plates are pre-formed into an integral welded structure, and the ear plates are attached to different walls of the cargo box via the first backing plate and the second backing plate. Thus, by welding the two backing plates to the relevant walls of the cargo box in a face-to-face manner, both the support strength of the hook support is improved, and the degree of welding stress concentration is reduced. As a result, the weld cracking and deformation between the hook support and the bottom plate are generally avoided, and the service life of the cargo box is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The features and advantages of the present utility model will be clearly understood from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as a limitation to the present utility model, wherein:

[0016] Figure 1 A perspective view showing an exemplary cargo box on which a hook support according to an embodiment of the present utility model is installed;

[0017] Figure 2 Shows Figure 1 A partial enlarged view of the locking hook support in [the figure] at A and from another perspective;

[0018] Figure 3 Shows Figure 1 An overall perspective view of the locking hook support in [the figure].

[0019] Description of reference numerals:

[0020] 100, cargo box; 101, bottom plate; 1011, bottom plate main body; 1012, cross beam; 10121, rear wall; 10122, bottom wall; 102, side plate; 103, rear cover; 200, locking hook support; 300, locking hook; 400, pin shaft; 500, chain; 1, ear plate; 11, pin hole; 12, first edge; 13, second edge; 2, first backing plate; 3, second backing plate. Detailed implementation manners

[0021] The embodiments of the present utility model will be described below with reference to the accompanying drawings. In the following description, many specific details are set forth in order to enable those skilled in the art to more fully understand and implement the present utility model. However, it is obvious to those skilled in the art that some of these specific details may not be required for the implementation of the present utility model. In addition, it should be understood that the present utility model is not limited to the specific embodiments described. On the contrary, the present utility model can be implemented by any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the aspects, features, embodiments and advantages described below are for illustrative purposes only and should not be regarded as elements or limitations of the claims, unless expressly recited in the claims.

[0022] In the following text, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements and not to limit the nature, sequence or number of these elements. The terms "comprising" and "having" are used to express an open inclusive meaning and mean that there may be additional elements / components in addition to the listed elements / components.

[0023] Figure 1 Shows the cargo box 100 of a vehicle according to an embodiment of the present utility model. As Figure 1As shown, the cargo box 100 may include a bottom plate 101, side plates 102, a rear cover 103, a lock hook support 200, and a self-locking device. The bottom plate 101 is generally rectangular and is located at the bottom of the cargo box 100. It may include a front side edge, a left side edge, a right side edge, and a rear side edge according to the traveling direction of the vehicle. The side plates 102 extend upward from the front side edge, the left side edge, and the right side edge of the bottom plate 101. The rear cover 103 is pivotally connected to the left and right side plates 102 via a hinge (not shown), especially at the upper end, so as to be able to close the rear opening between the two side plates 102. When the rear cover 103 is in the closed position closing the rear opening, the side edges of the rear cover 103 abut against the left and right side plates 102, and the bottom edge of the rear cover 103 abuts against the rear side edge of the bottom plate 101. Thus, the entire cargo box can form a closed cavity for loading goods.

[0024] Optionally, as Figure 1-2 shown, the bottom plate 101 may be provided at the bottom of the cargo box in a modular manner. For example, Figure 2 the bottom plate 101 shown may include a rectangular bottom plate body 1011 and a plurality of cross beams spaced apart on the bottom surface of the bottom plate body 1011. Each cross beam extends in a direction transverse to the traveling direction of the vehicle, that is, in the left-right direction, and there is a cross beam 1012 arranged at a position close to or flush with the rear side edge of the bottom plate body 1011. The cross beam 1012 may be a hollow structure with a square cross section or some other structure that can enhance the support stiffness, and is made of, for example, rectangular steel pipes. In this embodiment, the cross section of the cross beam 1012 is generally rectangular, and thus may include a rear wall 10121 and a bottom wall 10122 that are substantially perpendicular to each other.

[0025] Continuing to refer to Figure 1 and Figure 2 , the lock hook support 200 is attached to the bottom plate 101 for mounting the self-locking device. The self-locking device can be used to lock the rear cover 103 in the closed position and may include a lock hook 300. The lock hook 300 may be formed by a bent strip plate, and its first end ( Figure 1 and Figure 2 the lower end in Figure 1 and Figure 2The upper end of (in the figure) can at least partially abut against the rear cover 103 in the locked position. For this purpose, the self-locking device may further include a chain 500 connected to the locking hook 300. The chain 500 can be tightened or loosened so that the locking hook 300 can rotate between the locked position and the unlocked position. In the locked position, the locking hook 300 abuts against the rear cover 103 so that the rear cover 103 remains tightly attached to the left and right side plates 102 and the bottom plate 101 of the cargo box 100, and thus closes the rear opening of the cargo box 100. In the unlocked position, the locking hook 300 can be disengaged from the rear cover 103, so that when the cargo box 100 is tilted downward, the rear cover 103 is allowed to pivot (also referred to as "lift up") about the hinge point at its upper end under its own gravity or under the impact or gravity of the goods in the cargo box 100, thereby opening the rear opening of the cargo box 100.

[0026] Reference Figure 2 and Figure 3 , according to a preferred embodiment of the present invention, the locking hook support 200 may include an ear plate 1, a first backing plate 2 and a second backing plate 3.

[0027] The ear plate 1 is formed of an integrally triangular metal plate. A pin hole 11 is provided at one corner of the ear plate 1 for the spindle 400 to pass through. The side of the ear plate 1 opposite to the corner having the pin hole 11 is recessed inwardly in the middle part, whereby this side forms two edges, namely a first edge 12 and a second edge 13. The first backing plate 2 and the second backing plate 3 can be arranged transversely to the ear plate 1 (i.e., perpendicular to the thickness direction of the ear plate 1), and are respectively fixed to the first edge 12 and the second edge 13 by welding, for example. The ear plate 1 can be configured such that a certain angle is formed between its first edge 12 and second edge 13, so as to allow the first backing plate 2 fixed to the first edge 12 and the second backing plate 3 fixed to the second edge 13 to be respectively attached to different walls of the cargo box 100, especially to the rear wall and the bottom wall of the bottom plate 101 of the cargo box 100.

[0028] Advantageously, as can be seen especially from Figure 3 in, the portions of the first edge 12 and the second edge 13 near the ends (free ends) can be recessed inwardly (i.e., towards the corner where the pin hole 11 is located) relative to their joint portion or transition portion, thereby forming a first mounting position and a second mounting position, so that the first backing plate 2 and the second backing plate 3 can be embedded and welded to the corresponding first edge 12 or second edge 13.

[0029] In particular, the first backing plate 2 and the second backing plate 3 are made of a metal flat plate, for example, a generally rectangular metal flat plate. The surface area of the backing plate in the form of such a flat plate is significantly larger than the surface area of the corresponding first edge 12 or second edge 13. Thus, when the hook support 200 is attached to the bottom plate 101 of the cargo box 100, the first backing plate 2 can be in contact with the rear wall of the bottom plate 101, particularly the rear wall 10121 of the rearmost cross beam 1012, the second backing plate 3 is in contact with the bottom wall of the bottom plate 101, particularly the bottom wall 10122 of the cross beam 1012, and the joint of the first edge 12 and the second edge 13 can be in contact with the transition part where the rear wall 10121 and the bottom wall 10122 meet.

[0030] In particular, the angle between the first edge 12 and the second edge 13 can depend on the included angle between the rear wall and the bottom wall of the bottom plate 101 of the cargo box 100, that is, the rear wall 10121 and the bottom wall 10122 of the cross beam 1012. When the included angle between the rear wall 10121 and the bottom wall 10122 is substantially 90°, an included angle of substantially 90° can be formed between the first edge 12 and the second edge 13. Additionally, when the joint of the two walls of the cross beam 1012 transitions in the form of an arc surface, the joint of the first edge 12 and the third edge 13 can also transition in the form of an arc surface with the same radian.

[0031] The term "substantially" or "approximately" here means that the included angle between the first edge 12 and the second edge 13 may not be strictly 90°, but can vary within an allowable range according to the actual situation, for example, vary between ±5° and ±10°.

[0032] According to the preferred embodiment shown in the figure, the hook support 200 can include a plurality of, preferably two, ear plates 1. As Figure 2 and Figure 3 shown, the two ear plates 1 are spaced apart and arranged in parallel in a direction transverse to the traveling direction of the vehicle (i.e., the left - right direction). The first backing plate 2 is fixedly connected to the first edges 12 of both of the two ear plates 1 and is configured to extend transversely to the two ear plates 1 and beyond their opposite sides, that is, extend to the right beyond the right - hand ear plate 1 and extend to the left beyond the left - hand ear plate 1. Similarly, the second backing plate 3 is fixedly connected to the second edges 13 of the two ear plates 1 and is configured to extend transversely to the two ear plates 1 and beyond their opposite sides. Thus, the contact area between the ear plates 1 and the bottom plate 101 can be increased through the first backing plate 2 and the second backing plate 3, enhancing the connection strength between the hook support 200 and the cargo box 100.

[0033] In addition, the first backing plate 2 can also be configured to extend beyond the free end of the first edge 12 of the ear plate 1 (i.e., Figure 3the end facing away from the observer), the second backing plate 3 can also be configured to extend beyond the free end of the second edge 13 of the ear plate 1 (i.e., Figure 3 the end facing the observer).

[0034] Of course, the hook support 200 of the present utility model may also include only one ear plate 1. In this case, the first backing plate 2 and the second backing plate 3 can be configured to extend beyond both sides of the ear plate 1.

[0035] In the illustrated embodiment, the hook 300 may include two bent slats arranged side by side and connected together, and these bent slats are mounted on the pin shaft 400 between the two ear plates 1. In the case where the hook support 200 includes only one ear plate 1, the two bent slats forming the hook 300 can be mounted on the pin shaft 400 passing through the pin shaft hole 11 of the ear plate 1 on both sides of the ear plate 1.

[0036] The present utility model also provides a construction machine including the above-mentioned hook support or cargo box. The construction machine is preferably a wide-body vehicle.

[0037] Industrial applicability

[0038] The hook support according to the present utility model is applicable to the cargo box of a construction machine, especially applicable to the cargo box of a wide-body vehicle. However, it should be understood that the hook support according to the present utility model can also be used for the cargo boxes of other devices, such as the cargo boxes of freight vehicles, etc.

[0039] The hook supports in the prior art usually include two ear plates, which are connected to the bottom plate of the cargo box by welding. There are mainly two relatively specific solutions. One is that the two ear plates are respectively welded to the bottom side of the bottom plate and arranged in parallel along the direction transverse to the traveling direction of the construction machine. In this way, each ear plate is welded to the bottom plate only on one side, and the welding surface is small and not stable. Another solution is that the two ear plates are respectively connected to the rear side position of the bottom plate, but the rear side position may be used to abut against the rear cover, and there is a very high impact frequency between the rear cover and this position when the rear cover is closed. Thus, no matter where the hook support is installed on the bottom plate, it may cause the hook support or the bottom plate to be torn, and the service life after repair cannot be guaranteed.

[0040] Compared with the prior art, the lock hook support of the present utility model adds a first backing plate 2 and a second backing plate 3 on the basis of the ear plate 1. The first backing plate 2 and the second backing plate 3 can be pre-formed into an integral welded structure with the ear plate 1, and then integrally welded to the cargo box body. By welding the two backing plates with the relevant walls of the cargo box in a face-to-face manner, the degree of welding stress concentration is greatly reduced. The first backing plate 2 and the second backing plate 3 greatly increase the contact area between the ear plate 1 and the bottom plate 101, increasing the force-bearing area. Therefore, when closing the rear cover 103, the impact on the contact surface between the lock hook support and the bottom plate 101 is reduced. Thus, the weld cracking and deformation between the lock hook support and the bottom plate are greatly avoided as a whole, improving the service life of the cargo box.

[0041] For those skilled in the art, various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the present utility model. Based on the practice of the present utility model disclosed in this specification, other embodiments of the present utility model will be obvious to those skilled in the art. This specification and the examples disclosed therein should be considered illustrative only, and the true scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lock hook support for the cargo box of a vehicle, characterized in that, The hook support includes: A lug plate (1), the lug plate having a pin hole (11) at one end and a first edge (12) and a second edge (13) formed at an angle at the opposite end; and A first backing plate (2) and a second backing plate (3) respectively disposed on the first edge (12) and the second edge (13); Wherein, the first backing plate (2) and the second backing plate (3) respectively extend transversely to the corresponding first edge (12) and second edge (13) so as to be respectively attachable to different walls of the cargo box.

2. The hook support according to claim 1, characterized in that, A substantially 90° angle is formed between the first edge (12) and the second edge (13) of the lug plate (1).

3. The hook support according to claim 1 or 2, characterized in that, The hook support includes two lug plates (1) arranged in parallel at intervals, and the first backing plate (2) and the second backing plate (3) are both configured to extend beyond the opposite sides of the two lug plates (1).

4. The hook support according to claim 1 or 2, characterized in that The lug plate (1) is made of an integrally triangular metal plate, and the first backing plate (2) and the second backing plate (3) are made of integrally rectangular metal plates.

5. A cargo box of a vehicle, characterized in that, The cargo box includes a self-locking device for the rear cover and the hook support according to any one of claims 1 to 4, and the self-locking device includes a hook (300), and the hook is pivotally connected to the hook support via a pin shaft (400) passing through the pin hole (11) on the hook support.

6. The cargo box according to claim 5, characterized in that, The hook support is mounted on the bottom plate (101) of the cargo box, wherein the first backing plate (2) of the hook support is attached to the rear wall of the bottom plate, and the second backing plate (3) of the hook support is attached to the bottom wall of the bottom plate.

7. The cargo box according to claim 6, wherein The bottom plate (101) of the cargo box includes a bottom plate main body (1011) and a cross beam (1012) arranged at the rearmost end of the bottom plate main body (1011), the first backing plate (2) is attached to the rear wall (10121) of the cross beam (1012), and the second backing plate (3) is attached to the bottom wall (10122) of the cross beam.

8. An engineering machinery, characterized in that, The construction machinery includes the hook support according to any one of claims 1 to 4 or the cargo box according to any one of claims 5 to 7.

9. The construction machinery according to claim 8, wherein, The construction machinery is a wide-body vehicle.

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