Rear door hanging arm assembly for mining truck

Abstract

The utility model relates to a rear door hanging arm assembly for a mining truck, and belongs to the field of mining trucks. According to the technical scheme, the device comprises a base used for being fixedly arranged at the upper end of a carriage, a hinge plate is arranged on the base, and a hanging arm is hinged to one end of the hinge plate, and is characterized in that the upper end of the hanging arm is hinged to the hinge plate, the lower end of the hanging arm is used for being fixedly connected with a rear door, the hinge point of the hanging arm and the hinge plate is located on the plane of the rear door, and the hanging arm is arranged in a line shape. The hinged point of the hanging arm and the hinged plate is arranged on the plane of the rear door, at the moment, a linear hanging arm structure is adopted, and when the rear door is connected, the acting force of the rear door on the linear hanging arm can be transmitted to the hinged position of the hanging arm and the hinged plate through the linear hanging arm; and meanwhile, the tensile capacity of the linear hanging arm in the length direction is far higher than that of a hanging arm with an arc-shaped structure, so that the risk that the bent arc part of the rear door hanging arm is broken can be fundamentally avoided, and the service life of the rear door hanging arm of the mine truck is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mining vehicles, in particular to a rear door hanging arm assembly for a mining vehicle. Background Art

[0002] A rear door hinge device, namely the rear door arm, is installed between the rear door of the mining vehicle and the left and right panels to realize the opening and closing of the rear door for unloading. The rear door arm of the mining dump truck is a key component connecting the rear door assembly, and its quality directly affects the actual performance of the dump truck.

[0003] In the prior art, the rear door hanging arm is usually used as shown in the corresponding description in the patent document with application number CN202322044904.1 or CN201220581369.2, combined with the specification drawings of this application. Figure 1 In the embodiment, the hinge point between the hanging arm 2 and the rear door 1 is not on the rear door plane a. At this time, the structure of the hanging arm 2 is a hinged plate with an arc, one end of which is hinged on the car body and the other end is fixedly connected to the rear door 1, thereby completing the hinge effect of the rear door 1 and the car body.

[0004] However, there are still some problems with the structure of this hanging arm: due to the frequent loading and unloading of dump trucks, the fracture of the bending arc of the rear door hanging arm has become a common problem that needs to be solved urgently in the market. The arc-shaped hanging arm may crack during use, which may affect the closing effect of the rear door at the least, or even cause the entire rear door assembly to fall off, resulting in serious consequences. In order to enhance the reliability of the rear door hanging arm in the prior art, the market currently mainly adopts welding plates on the outside of the rear door. Although such operation can delay the cracking time of the rear door hanging arm to a certain extent, it fails to fundamentally avoid the cracking phenomenon. In addition, due to the special position of the rear door hanging arm, the space for welding the plates is small, the plates are small, the strength of the rear door hanging arm is slightly improved, and it is not easy to weld when the plates are large. The welding process of the plates is obvious. Utility Model Content

[0005] The utility model aims at the problems in the prior art and provides a fracture-resistant rear door hanging arm assembly for a mining vehicle, thereby solving the problem that the rear door hanging arm in the prior art is prone to fracture at the bending arc.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A rear door hanging arm assembly for a mining vehicle includes a base, the base is used to be fixed on the upper end of a vehicle body, a hinge plate is provided on the base, a hanging arm is hinged to one end of the hinge plate, the upper end of the hanging arm is hinged to the hinge plate, the lower end of the hanging arm is used to be fixed to the rear door, the hinge point between the hanging arm and the hinge plate is located on the plane of the rear door, and the hanging arm is arranged in a straight line. By setting the hinge point between the hanging arm and the hinge plate on the plane of the rear door and adopting a straight-line hanging arm structure, when the rear door is connected, the force of the rear door on the straight-line hanging arm can be transmitted to the hinge point between the hanging arm and the hinge plate through the straight-line hanging arm, and at the same time, the tensile strength of the straight-line hanging arm in the length direction is much greater than that of the hanging arm with an arc structure, thereby fundamentally avoiding the risk of fracture of the rear door hanging arm at the bending arc, and improving the service life of the rear door hanging arm of the mining vehicle.

[0008] Preferably, the other end of the hinged plate is hinged to the base. By hingedly connecting the hinged plate to the base, during the unloading process, if the material in the compartment is too large or needs to be unloaded quickly, the hinged plate will rotate at the hinged joint between the hinged plate and the base, and at this time, the rear door can be driven to lift up a certain distance to reduce the blocking effect of the rear door on the material, which can facilitate the unloading of larger materials or enable the unloading of materials quickly.

[0009] Preferably, two hinge plates are provided, and the two hinge plates are symmetrically arranged on both sides of the base, the base and the two hinge plates are hingedly arranged, and the hanging arm is arranged between the two hinge plates and is hingedly arranged with the two hinge plates. By symmetrically arranging the hinge plates on both sides of the base, when the hinge plates are subjected to force, the force can be evenly transmitted to the base, avoiding the problem of uneven force caused by force on only one side of the base.

[0010] Preferably, at least one reinforcing plate is provided between the two hinged plates, and the two ends of the reinforcing plate are respectively fixedly connected to the two hinged plates. The reinforcing plate can be provided to fix the two hinged plates together and strengthen the structure of the two hinged plates, thereby increasing the stress of the hinged plates.

[0011] Preferably, the rear door arm assembly further comprises an anti-collision pad, which is arranged on the vehicle body, and the lower end of the hinge plate can abut against the anti-collision pad. The anti-collision pad can prevent the hinge plate from directly contacting the vehicle body when the hinge plate descends and impacts the vehicle body, thereby increasing the contact area of ​​the vehicle body to withstand the impact of the hinge plate and reducing the risk of damage to the vehicle body.

[0012] Preferably, the thickness of the hanging arms is uniform. By providing hanging arms with uniform thickness, it is possible to facilitate material selection and processing during the production of the hanging arms, thereby reducing production costs.

[0013] It can be seen from the above technical solutions that the advantages of the utility model are: by setting the hinge point of the hanging arm and the hinge plate on the plane of the rear door, a straight-line hanging arm structure is adopted at this time. When the rear door is connected, the force of the rear door on the straight-line hanging arm can be transmitted to the hinge of the hanging arm and the hinge plate through the straight-line hanging arm, and at the same time, the tensile strength of the straight-line hanging arm in the length direction is much greater than that of the hanging arm with an arc structure, thereby fundamentally avoiding the risk of fracture at the bending arc of the rear door hanging arm, and improving the service life of the rear door hanging arm of the mining vehicle. By hingedly setting the hinge plate and the base, during the unloading process, if the material in the car is too large or needs to be unloaded quickly, the hinge plate will rotate at the hinge of the hinge plate and the base, and at this time, the rear door can be driven to lift up a certain distance to reduce the blocking effect of the rear door on the material, which can facilitate the unloading of larger materials or quickly unload materials. By symmetrically arranging hinged plates on both sides of the base, the force can be evenly transferred to the base when the hinged plates are stressed, thus avoiding the problem of uneven force caused by stress on only one side of the base. By arranging a reinforcing plate, the two hinged plates can be fixedly connected, and the structure of the two hinged plates can be strengthened at the same time to increase the stress level of the hinged plates. By arranging an anti-collision pad, when the hinged plate descends and impacts the car body, the hinged plate is prevented from directly contacting the car body, thereby increasing the contact area of ​​the car body that bears the impact force of the hinged plate and reducing the risk of damage to the car body. By arranging a hanging arm with uniform thickness, it is possible to facilitate material selection and processing during the production of the hanging arm, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the curved hinge plate and the rear door plane mentioned in the background technology.

[0016] Figure 2 It is a structural schematic diagram of a specific implementation example of the utility model.

[0017] Figure 3 It is a structural side view of a specific implementation example of the utility model.

[0018] Description of main reference numerals

[0019] In the figure: a, rear door plane; 1, rear door; 2, hanging arm; 3, car body; 4, base; 5, hinged plate; 6, reinforcement plate; 7, anti-collision pad. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0021] Example:

[0022] like Figure 1-Figure 3 As shown, a rear door hanging arm assembly for a mining vehicle includes a base 4, which is used to be fixed on the upper end of a car body 3, a hinge plate 5 is provided on the base 4, one end of the hinge plate 5 is hinged with a hanging arm 2, the upper end of the hanging arm 2 is hinged to the hinge plate 5, the lower end of the hanging arm 2 is used to be fixed to the rear door 1, the hinge point of the hanging arm 2 and the hinge plate 5 is located on the rear door plane a, and the hanging arm 2 is set in a straight line. In this way, by setting the hinge point of the hanging arm 2 and the hinge plate 5 on the plane of the rear door 1, a straight line hanging arm 2 structure is adopted at this time. When the rear door 1 is connected, the force of the rear door 1 on the straight line hanging arm 2 can be transmitted to the hinge of the hanging arm 2 and the hinge plate 5 through the straight line hanging arm 2, and at the same time, the straight line hanging arm 2 is in The tensile strength in the length direction is much greater than that of the arm 2 with an arc structure, thereby fundamentally avoiding the risk of breakage at the bending arc of the arm 2 of the rear door 1, and improving the service life of the arm 2 of the rear door 1 of the mining vehicle. By hingedly setting the hinge plate 5 and the base 4, during the unloading process, if the material in the car 3 is too large or needs to be unloaded quickly, the hinge plate 5 will rotate at the hinge between the hinge plate 5 and the base 4, and at this time, the rear door 1 can be driven to lift up a certain distance to reduce the blocking effect of the rear door 1 on the material, which can facilitate the unloading of larger materials, or quickly unload materials. By setting a hanger 2 with uniform thickness, it is convenient to select materials and process them during the production of the hanger 2, thereby reducing production costs.

[0023] In the present embodiment, two hinged plates 5 are provided, and the two hinged plates 5 are symmetrically arranged on both sides of the base 4. The base 4 and the two hinged plates 5 are hingedly arranged, and the hanging arm 2 is arranged between the two hinged plates 5 and is hingedly arranged with the two hinged plates 5. In the present embodiment, a plurality of reinforcing plates 6 are arranged between the two hinged plates 5, and the two ends of the reinforcing plates 6 are respectively fixedly connected to the two hinged plates 5. In this way, through the hinged plates 5 symmetrically arranged on both sides of the base 4, when the hinged plates 5 are subjected to force, the force can be evenly transmitted to the base 4, thereby avoiding the problem of uneven force caused by the force on a single side of the base 4. Through the provided reinforcing plates 6, the two hinged plates 5 can be fixedly connected, and at the same time, the two hinged plates 5 are structurally reinforced to improve the force degree of the hinged plates 5.

[0024] In the present embodiment, the rear door 1 arm 2 assembly further includes an anti-collision pad 7, which is disposed on the vehicle body 3, and the lower end of the hinge plate 5 can abut against the anti-collision pad 7. With such an arrangement, the anti-collision pad 7 can prevent the hinge plate 5 from directly contacting the vehicle body 3 when the hinge plate 5 descends and impacts the vehicle body 3, thereby increasing the contact area of ​​the vehicle body 3 that bears the impact force of the hinge plate 5 and reducing the risk of damage to the vehicle body 3.

[0025] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rear door arm assembly for a mining vehicle, comprising a base (4), the base (4) being fixedly mounted on the upper end of a vehicle compartment (3), a hinge plate (5) being arranged on the base (4), and a hanger arm (2) being hingedly connected to one end of the hinge plate (5), characterized in that: The upper end of the hanging arm (2) is hinged to the hinge plate (5), the lower end of the hanging arm (2) is used to be fixedly connected to the rear door (1), the hinge point between the hanging arm (2) and the hinge plate (5) is located on the rear door plane (a), and the hanging arm (2) is arranged in a straight line.

2. The rear door arm assembly for a mining vehicle according to claim 1, characterized in that: The other end of the hinged plate (5) is hinged to the base (4).

3. The rear door arm assembly for a mining vehicle according to claim 2, characterized in that: Two hinged plates (5) are provided, and the two hinged plates (5) are symmetrically arranged on both sides of the base (4), the base (4) and the two hinged plates (5) are both hingedly arranged, and the hanging arm (2) is arranged between the two hinged plates (5) and is both hingedly arranged with the two hinged plates (5).

4. The rear door arm assembly for a mining vehicle according to claim 3, characterized in that: At least one reinforcing plate (6) is arranged between the two hinged plates (5), and two ends of the reinforcing plate (6) are respectively fixedly connected to the two hinged plates (5).

5. The rear door arm assembly for a mining vehicle according to claim 4, characterized in that: The rear door (1) hanging arm (2) assembly also includes an anti-collision pad (7), which is arranged on the vehicle compartment (3), and the lower end of the hinged plate (5) can abut against the anti-collision pad (7).

6. The rear door arm assembly for a mining vehicle according to claim 1, characterized in that: The thickness of the hanging arm (2) is uniform.

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