Steering connection structure and mining dump truck

Abstract

This invention proposes a steering connection structure and a mining dump truck. The steering connection structure includes a front axle joint, a steering arm, a shear ring, and a shear pin. The front axle joint has a first through hole that extends through the front axle joint in a first direction, and a first receiving groove is formed at one end of the first through hole. The steering arm has an integral first part and a second part. The first part is located on one side of the front axle joint in the first direction and is connected to the front axle joint via a connecting assembly. The first part has a second through hole corresponding to the first through hole that extends through the steering arm in the first direction. A second receiving groove is formed at one end of the second through hole facing the front axle joint. The first receiving groove and the second receiving groove are joined to form an annular groove. The second part is used to connect the steering mechanism of the mining dump truck. The shear ring is disposed between the front axle joint and the steering arm and is received in the annular groove. The shear pin is connected between the front axle joint and the steering arm in the first direction.

Description

Technical Field

[0001] This invention relates to the field of mining vehicle technology, and in particular to a steering connection structure and a mining dump truck. Background Technology

[0002] In mining trucks, the steering arm and the steering trapezoidal arm of the steering mechanism are generally arranged independently. This structure occupies a large amount of space and is not conducive to the layout of the vehicle's steering mechanism. Furthermore, since the steering arm and the front axle joint are usually connected by ordinary bolt sets, higher-specification bolt sets (e.g., larger outer diameter) are required to provide sufficient preload. Higher-specification bolt sets increase costs, but using relatively smaller-specification bolt sets (e.g., smaller outer diameter) will result in insufficient preload, affecting the reliability of the connection between the steering arm and the front axle joint, and even causing safety accidents. Summary of the Invention

[0003] A primary objective of this invention is to overcome at least one of the deficiencies of the prior art described above, and to provide a steering connection structure that is reliable and cost-effective in connecting the steering arm and the front axle joint.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] According to one aspect of the present invention, a steering connection structure is provided for use in a mining dump truck, wherein the steering connection structure includes a front axle joint, a steering arm, a shear ring, and a shear pin; the front axle joint has a first through hole extending through the front axle joint in a first direction, and a first receiving groove is formed at one end of the first through hole; the steering arm has an integrally formed first part and a second part, the first part being located on one side of the front axle joint in the first direction and connected to the front axle joint via a connecting assembly, the first part having a second through hole corresponding to the first through hole, the second through hole extending through the steering arm in the first direction, and a second receiving groove being formed at one end of the second through hole facing the front axle joint, the first receiving groove and the second receiving groove forming an annular groove, the second part being used to connect the steering mechanism of the mining dump truck; the shear ring is disposed between the front axle joint and the steering arm and is received in the annular groove; the shear pin is connected between the front axle joint and the steering arm in the first direction.

[0006] According to one embodiment of the present invention, along the first direction, the depth of the first receiving groove is equal to the depth of the second receiving groove.

[0007] According to one embodiment of the present invention, the diameter of the shear ring is equal to the diameter of the second through hole at the mating point.

[0008] According to one embodiment of the present invention, the front axle joint is connected to the first part of the steering arm via a plurality of connecting components, the plurality of connecting components being arranged at intervals along a circular path, the circular path being arranged around the second through hole.

[0009] According to one embodiment of the present invention, the steering connection structure includes a plurality of shear pins, the plurality of shear pins and the plurality of connecting components being arranged alternately at intervals along the circular path.

[0010] According to one embodiment of the invention, at least two connecting components are provided between two adjacent shear pins on the circular path.

[0011] According to one embodiment of the present invention, at least two of the connecting components located between two adjacent shear pins are evenly spaced; and / or, the steering connection structure includes at least three shear pins, and the number of each group of connecting components located between different adjacent shear pins is equal.

[0012] According to one embodiment of the present invention, wherein: the cross-section of the shear pin is circular; and / or, the connecting assembly is a bolt assembly.

[0013] According to one embodiment of the present invention, the second part is provided with a first bearing hole and a second bearing hole, the first bearing hole being closer to the first part than the second bearing hole, the first bearing hole being used to connect the piston rod of the steering cylinder of the mining dump truck, and the second bearing hole being used to connect the steering tie rod of the mining dump truck.

[0014] As can be seen from the above technical solution, the advantages and positive effects of the steering connection structure proposed in this invention are as follows:

[0015] The steering connection structure proposed in this invention includes a front axle joint, a steering arm, a shear ring, and a shear pin. A first through hole in the front axle joint has a first receiving groove. A first part of the steering arm is connected to the front axle joint via a connecting assembly. A second through hole in the first part has a second receiving groove. The first and second receiving grooves mate to form an annular groove for accommodating the shear ring. A second part of the steering arm is used to connect to the steering mechanism of a mining dump truck. The shear pin is connected between the front axle joint and the steering arm along a first direction. Through the above design, this invention employs a cooperative design of the shear ring and the shear pin, which can utilize both to jointly bear the shear force at the connection between the front axle joint and the steering arm, thereby improving connection reliability. It is particularly suitable for vehicles such as mining dump trucks with large tonnage. The steering connection structure proposed in this invention further demonstrates advantages such as strong resistance to steering shear forces, high connection reliability, simple structure, convenient installation, and low cost.

[0016] Another major objective of the present invention is to overcome at least one of the defects of the prior art described above and to provide a mining dump truck employing the aforementioned steering connection structure.

[0017] To achieve the above objectives, the present invention adopts the following technical solution:

[0018] According to one aspect of the present invention, a mining dump truck is provided, which includes the steering connection structure proposed in the present invention and described in the above embodiments.

[0019] As can be seen from the above technical solution, the advantages and positive effects of the mining dump truck proposed in this invention are as follows:

[0020] The mining dump truck proposed in this invention improves the connection reliability of the steering mechanism by adopting the steering connection structure proposed in this invention, and has the advantages of simple structure, convenient installation and low cost. Attached Figure Description

[0021] Various objects, features, and advantages of the invention will become more apparent from the following detailed description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are merely illustrative of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a steering connection structure according to an exemplary embodiment;

[0023] Figure 2 yes Figure 1 A partial cross-sectional schematic diagram of the steering connection structure is shown;

[0024] Figure 3 yes Figure 1 A three-dimensional structural schematic diagram of the steering arm is shown;

[0025] Figure 4 yes Figure 1 A plan view of the steering arm is shown;

[0026] Figure 5 It is along Figure 4 A cross-sectional view made by the broken line BB in the middle;

[0027] Figure 6 yes Figure 1 The axial sectional view of the shear ring is shown.

[0028] The annotations in the attached figures are explained as follows:

[0029] 100. Front axle joint;

[0030] 110. First through hole;

[0031] 111. First receiving tank;

[0032] 200. Steering arm;

[0033] 210. Part One;

[0034] 211. Second through hole;

[0035] 2111. Second receiving tank;

[0036] 212. Bolt hole;

[0037] 213. Pin hole;

[0038] 220. Part Two;

[0039] 221. First bearing hole;

[0040] 222. Second bearing hole;

[0041] 300. Shear ring;

[0042] 400. Connection components;

[0043] 500. Shear pin;

[0044] d1.Inner diameter;

[0045] d2.Inner diameter;

[0046] h. Depth;

[0047] S. Circular path;

[0048] X. First direction. Detailed Implementation

[0049] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the description and drawings therein are for illustrative purposes only and not intended to limit the present invention.

[0050] In the following description of different exemplary embodiments of the invention, reference is made to the accompanying drawings, which form part of the invention, and in which different exemplary structures, systems, and steps that can implement various aspects of the invention are shown by way of example. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of the invention. Furthermore, although the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of the invention, these terms are used herein only for convenience, such as the orientation according to the examples shown in the drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the invention.

[0051] See Figure 1 The illustration shows a three-dimensional structural diagram of the steering connection structure proposed in this invention. In this exemplary embodiment, the steering connection structure proposed in this invention is described using a mining dump truck as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this invention to other types of vehicles, and these changes are still within the scope of the principles of the steering connection structure proposed in this invention.

[0052] like Figure 1 As shown, in one embodiment of the present invention, the steering connection structure proposed by the present invention includes a front axle joint 100, a steering arm 200, a shear ring 300, and a shear pin 500. (See also...) Figures 2 to 6 , Figure 2 A partial cross-sectional schematic diagram of the steering connection structure is shown in the figure. Figure 3 The diagram shows a representative three-dimensional structural schematic of the steering arm 200; Figure 4 The diagram shows a representative plan view of the steering arm 200, for example, showing... Figure 3 The bottom view allows observation of the second receiving slot 2111; Figure 5 The middle section represents the direction along Figure 4 A cross-sectional view made by the broken line BB in the middle; Figure 6 The diagram shows a representative axial sectional view of the shear ring 300. The structure, connection method, and functional relationship of the main components of the steering connection structure proposed in this invention will be described in detail below with reference to the above-mentioned figures.

[0053] like Figures 1 to 6As shown, in one embodiment of the present invention, the front axle joint 100 has a first through hole 110, which extends through the front axle joint 100 along a first direction X, and a first receiving groove 111 is formed at one end of the first through hole 110. The steering arm 200 has an integrally structured first part 210 and a second part 220. The first part 210 is located on one side of the front axle joint 100 in the first direction X, and is connected to the front axle joint 100 via a connecting assembly 400. The first part 210 has a second through hole 211 arranged corresponding to the first through hole 110. The second through hole 211 extends through the steering arm 200 along the first direction X, and a second receiving groove 2111 is formed at one end of the second through hole 211 facing the front axle joint 100. The second part 220 is used to connect to the steering mechanism of a mining dump truck. The shear ring 300 is disposed between the front axle joint 100 and the steering arm 200, and is accommodated in the annular groove formed by the engagement of the first accommodating groove 111 and the second accommodating groove 2111, i.e., the shear ring 300 is arc-shaped, thereby providing greater torque transmission. The shear pin 500 is connected between the front axle joint 100 and the steering arm 200 along the first direction X. Through the above design, the present invention adopts the cooperative design of the shear ring 300 and the shear pin 500, which can utilize the two to jointly bear the shear force at the connection between the front axle joint 100 and the steering arm 200, thereby improving the connection reliability. It is particularly suitable for vehicles such as mining dump trucks with large tonnage. The steering connection structure proposed in this invention can further demonstrate the advantages of strong ability to withstand steering shear force, strong connection reliability, simple structure, convenient installation, and low cost.

[0054] It should be noted that the shear pin 500 and the pin hole 213 can adopt a transition fit. A transition fit means that the outer diameter of the shear pin 500 can be slightly larger than the inner diameter of the pin hole 213 to form an interference fit. However, the outer diameter of the shear pin 500 should not be too large relative to the inner diameter of the pin hole 213 to ensure that the shear pin 500 can be assembled in the pin hole 213. Alternatively, the outer diameter of the shear pin 500 can be slightly smaller than the inner diameter of the pin hole 213 to form a clearance fit. However, the outer diameter of the shear pin 500 should not be too small relative to the inner diameter of the pin hole 213 to ensure that the shear pin 500 can provide the required shear resistance.

[0055] like Figure 5As shown, in one embodiment of the present invention, the depth of the first receiving groove 111 and the depth h of the second receiving groove 2111 can be equal along the first direction X. Through this design, the present invention enables the shear ring 300 to be arranged approximately centrally between the front axle joint 100 and the steering arm 200 in the first direction X, thereby optimizing the force balance of the shear ring 300 on both sides of the front axle joint 100 and the steering arm 200, and further improving connection reliability. In some embodiments, the depth of the first receiving groove 111 and the depth h of the second receiving groove 2111 may not be equal, and this is not limited to this embodiment.

[0056] like Figure 5 and Figure 6 As shown, in one embodiment of the present invention, the aperture d2 of the anti-shear ring 300 and the aperture d1 of the second through hole 211 of the steering arm 200 at the mating point (i.e., the connection between the second through hole 211 and the second receiving groove 2111) can be equal.

[0057] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the front axle joint 100 and the first part 210 of the steering arm 200 can be connected via a plurality of connecting components 400. The axial connecting components 400 are arranged at intervals along a circular path S, and the circular path S is arranged around the second through hole 211 (i.e., the second receiving groove 2111) of the steering arm 200. Furthermore, in Figures 3 to 5 The arrangement of the connecting assembly 400 on the steering arm 200 can be understood by referring to the bolt holes 212 on the steering arm 200, and the arrangement of the anti-shear pin 500 on the steering arm 200 can be understood by referring to the pin holes 213 on the steering arm 200. Through the above design, the present invention can improve the connection strength between the front axle joint 100 and the steering arm 200 by using multiple connecting assemblies 400, and can make the stress at the connection between the front axle joint 100 and the steering arm 200 more uniform.

[0058] like Figure 1 , Figures 3 to 5 As shown, based on the design where the front axle joint 100 and the first part 210 of the steering arm 200 are connected via multiple connecting components 400, in one embodiment of the present invention, the steering connection structure proposed in this invention may include multiple shear pins 500, which are arranged alternately and at intervals with the multiple connecting components 400 along the aforementioned circular path S. Through this design, the present invention can utilize multiple shear pins 500 to enhance the shear resistance at the connection between the front axle joint 100 and the steering arm 200, further improving the connection strength and reliability.

[0059] like Figure 1 , Figures 3 to 5As shown, based on the design that both the connecting components 400 and the anti-shear pins 500 are multiple and arranged alternately, in one embodiment of the present invention, on the aforementioned circular path S, there can be at least two connecting components 400 between two adjacent anti-shear pins 500. Through this design, the present invention can further improve the connection strength between the front axle joint 100 and the steering arm 200. In some embodiments, when both the connecting components 400 and the anti-shear pins 500 are multiple and arranged alternately, the connecting components 400 and the anti-shear pins 500 can also be arranged in an alternating manner, or there can be at least two anti-shear pins 500 between two adjacent connecting components 400, instead of only one anti-shear pin 500 as shown in the figures, and the invention is not limited to the above embodiments.

[0060] like Figure 1 , Figures 3 to 5 As shown, based on the design that both the connecting components 400 and the anti-shear pins 500 are multiple and arranged alternately, in one embodiment of the present invention, at least two connecting components 400 located between two adjacent anti-shear pins 500 can be arranged at uniform intervals. Through the above design, the present invention can further improve the uniformity of force distribution at the connection between the front axle joint 100 and the steering arm 200, and further improve the structural stability and reliability.

[0061] like Figure 1 , Figures 3 to 5 As shown, based on the design that both the connecting components 400 and the anti-shear pins 500 are multiple and arranged alternately, in one embodiment of the present invention, the steering connection structure may include at least three anti-shear pins 500, such as, but not limited to, the three anti-shear pins 500 shown in the figures. Furthermore, the number of connecting components 400 located between different adjacent anti-shear pins 500 can be equal. Through the above design, the present invention can further improve the uniformity of force distribution at the connection between the front axle joint 100 and the steering arm 200, and further improve structural stability and reliability.

[0062] In one embodiment of the present invention, the cross-section of the shear pin 500 can be circular; in other words, the shear pin 500 can be a cylindrical pin structure. Through the above design, the present invention enables each shear pin 500 to have a more balanced stress state, thereby improving the shear resistance of the shear pin 500 and providing a larger torque transmission capacity.

[0063] In one embodiment of the present invention, the connecting assembly 400 can be a bolt assembly. Since the shear pin 500 and the shear ring 300 jointly bear the shear force at the connection between the front axle joint 100 and the steering arm 200, the bolt assembly does not need to be of a larger specification. That is, compared to existing solutions, the specifications (e.g., outer diameter) of the bolt assembly can be reduced, which helps to lower the cost of components and improve economy.

[0064] like Figure 1 , Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the second part 220 of the steering arm 200 may have a first bearing hole 221 and a second bearing hole 222, with the first bearing hole 221 being closer to the first part 210 of the steering arm 200 than the second bearing hole 222. The first bearing hole 221 is used to connect to the piston rod of the steering cylinder of the mining dump truck, and the second bearing hole 222 is used to connect to the steering tie rod of the mining dump truck. Through the above design, the present invention uses an integral steering arm 200 to simultaneously connect to both the piston rod of the steering cylinder and the steering tie rod. Compared to the existing solution that uses relatively independent steering arms and trapezoidal arms to connect the steering mechanism separately, the present invention is advantageous in improving structural strength and reducing structural complexity. For example, the connection between the first bearing hole 221 and the piston rod can achieve the connection function of the steering arm in the existing solution, and the connection between the second bearing hole 222 and the steering tie rod can achieve the connection function of the trapezoidal arm in the existing solution.

[0065] It should be noted that the steering connection structures shown in the accompanying drawings and described in this specification are merely a few examples among many steering connection structures capable of employing the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any detail or component of the steering connection structures shown in the accompanying drawings or described in this specification.

[0066] In summary, the steering connection structure proposed in this invention includes a front axle joint 100, a steering arm 200, a shear ring 300, and a shear pin 500. The front axle joint 100 has a first through hole 110 with a first receiving groove 111. The first part 210 of the steering arm 200 is connected to the front axle joint 100 via a connecting assembly 400. The second through hole 211 of the first part 210 has a second receiving groove 2111. The first receiving groove 111 and the second receiving groove 2111 mate to form an annular groove for accommodating the shear ring 300. The second part 220 of the steering arm 200 is used to connect to the steering mechanism of a mining dump truck. The shear pin 500 is connected between the front axle joint 100 and the steering arm 200 along a first direction X. Through the above design, this invention uses an integrally structured steering arm 200 to simultaneously connect to the front axle joint 100 and the steering mechanism, which is beneficial for improving structural strength and reducing structural complexity. Furthermore, the present invention employs a cooperative design of shear ring 300 and shear pin 500, which can utilize the two together to bear the shear force at the connection between front axle joint 100 and steering arm 200, thereby improving connection reliability. It is particularly suitable for vehicles such as mining dump trucks with large tonnage. The steering connection structure proposed in this invention can further demonstrate the advantages of strong ability to withstand steering shear force, strong connection reliability, simple structure, convenient installation, and low cost.

[0067] Based on the detailed description of several exemplary embodiments of the steering connection structure proposed in this invention above, an exemplary embodiment of the mining dump truck proposed in this invention will be described below.

[0068] In one embodiment of the present invention, the mining dump truck proposed by the present invention includes the steering connection structure proposed by the present invention and described in detail in the above embodiments.

[0069] It should be noted that the mining dump trucks shown in the accompanying drawings and described in this specification are merely a few examples among many mining dump trucks capable of employing the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any detail or component of the mining dump trucks shown in the accompanying drawings or described in this specification.

[0070] In summary, the mining dump truck proposed in this invention, by adopting the steering connection structure proposed in this invention, can improve the connection reliability at the steering mechanism, and has the advantages of simple structure, convenient installation, and low cost.

[0071] The foregoing describes and / or illustrates in detail exemplary embodiments of the steering connection structure and mining dump truck proposed by the present invention. However, the embodiments of the present invention are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms "a," "an," and "the above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising," "including," and "having" are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc. Furthermore, the terms "first" and "second," etc., in the claims and specification are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0072] Although the steering connection structure and mining dump truck proposed in this invention have been described according to different specific embodiments, those skilled in the art will recognize that modifications can be made to the implementation of this invention within the spirit and scope of the claims.

Claims

1. A steering connection structure applied to a mining dump truck, characterized in that, The steering connection structure includes: The front axle joint has a first through hole, which extends through the front axle joint in a first direction, and a first receiving groove is provided at one end of the opening of the first through hole. The steering arm has a first part and a second part of an integral structure. The first part is located on one side of the front axle joint in the first direction and is connected to the front axle joint via a connecting assembly. The first part has a second through hole arranged corresponding to the first through hole. The second through hole passes through the steering arm in the first direction. A second receiving groove is opened at one end of the second through hole facing the front axle joint. The first receiving groove and the second receiving groove are matched to form an annular groove. The second part is used to connect to the steering mechanism of the mining dump truck. An anti-shear ring is disposed between the front axle joint and the steering arm and is accommodated in the annular groove; An anti-shear pin is connected between the front axle joint and the steering arm along the first direction.

2. The steering connection structure according to claim 1, characterized in that, Along the first direction, the depth of the first receiving groove is equal to the depth of the second receiving groove.

3. The steering connection structure according to claim 1, characterized in that, The diameter of the shear ring is equal to the diameter of the second through hole at the mating point.

4. The steering connection structure according to claim 1, characterized in that, The front axle joint is connected to the first part of the steering arm via a plurality of connecting components, which are spaced apart along a circular path that surrounds the second through hole.

5. The steering connection structure according to claim 4, characterized in that, The steering connection structure includes a plurality of shear pins, which are arranged alternately and at intervals with a plurality of the connecting components along the circular path.

6. The steering connection structure according to claim 5, characterized in that, On the circular path, there are at least two connecting components between two adjacent shear pins.

7. The steering connection structure according to claim 6, characterized in that: At least two of the connecting components located between two adjacent shear pins are evenly spaced; and / or The steering connection structure includes at least three shear pins, and the number of each group of connection components located between different adjacent pairs of shear pins is equal.

8. The steering connection structure according to claim 1, characterized in that: The cross-section of the shear pin is circular; and / or The connecting component is a bolt assembly.

9. The steering connection structure according to any one of claims 1 to 8, characterized in that, The second part has a first bearing hole and a second bearing hole. The first bearing hole is closer to the first part than the second bearing hole. The first bearing hole is used to connect the piston rod of the steering cylinder of the mining dump truck, and the second bearing hole is used to connect the steering tie rod of the mining dump truck.

10. A mining dump truck, characterized in that, Includes the steering connection structure as described in any one of claims 1 to 9.

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