Steering link mechanism and mining dump truck

Abstract

The utility model relates to a steering connecting rod mechanism and a mining dump truck, a steering connecting mechanism is connected among a frame, a left side suspension mechanism and a right side suspension mechanism, the steering connecting rod mechanism comprises a steering arm, a steering oil cylinder and a steering pull rod, the steering arm is rotatably connected with the frame, one end of the steering oil cylinder is rotatably connected with the frame, and the other end of the steering oil cylinder is rotatably connected with the frame. The other end of the steering oil cylinder is rotatably connected with the steering arm, one end of the steering pull rod is rotatably connected with the left suspension mechanism or the right suspension mechanism, the other end of the steering pull rod is rotatably connected with the steering arm, and the steering oil cylinder and the steering pull rod are located on the same side of the rotating joint of the steering arm and the frame. And the steering oil cylinder and the steering pull rod are distributed up and down. The steering device is reasonable and compact in layout, and can be mounted on each axis suspension of the mine car, so that each axis suspension can realize steering, the turning radius of the mine car is reduced, and the trafficability of the mine car is improved; the abrasion of the tire is reduced, and the use cost is reduced; and independent disassembly and assembly can be achieved, and maintenance is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of transportation equipment technology, specifically to the field of mining transportation equipment technology, and particularly to a steering linkage mechanism and a mining dump truck. Background Technology

[0002] As a core piece of equipment in mine transportation, the steering performance of mining dump trucks directly affects transportation efficiency and operational safety. Traditional mining dump trucks generally use an integral axle structure for their steering mechanisms, with only the front axle possessing steering functionality, leading to the following technical defects:

[0003] 1. Limited steering angle: Due to the fixed connection between the axle and the frame, the maximum steering angle of the front wheels is small, which cannot meet the steering requirements of narrow mining roads.

[0004] 2. Excessive turning radius: The design with only front axle steering results in a large turning radius for the entire vehicle, which frequently leads to "reverse turning" in confined areas such as mining areas and spoil heaps, reducing transportation efficiency.

[0005] 3. Severe tire wear: When a vehicle has multiple axle suspensions at the rear and these suspensions cannot steer, it cannot be guaranteed that each axle suspension meets the Ackermann steering principle. The tires of the rear axles will slip when steering, reducing the tire life.

[0006] 4. Poor suspension system coordination: The integral axle structure prevents the suspension system from moving independently. When driving on unpaved roads, the vehicle body vibration is aggravated, affecting the reliability of the equipment.

[0007] 5. Unreasonable layout: All steering structures are distributed on a single plane, and the entire steering system occupies space, resulting in a large overall size. Summary of the Invention

[0008] One objective of this invention is to provide a steering linkage mechanism.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A steering linkage mechanism is disclosed, wherein the steering linkage mechanism is connected between the vehicle frame and the left suspension mechanism and the right suspension mechanism, and is used to drive the left suspension mechanism and the right suspension mechanism to rotate relative to the vehicle frame. The steering linkage mechanism includes a steering arm, a steering cylinder, and a steering tie rod. The steering arm is rotatably connected to the vehicle frame. The steering cylinder is located on the left and right sides of the steering arm, one end of the steering cylinder is rotatably connected to the vehicle frame, and the other end of the steering cylinder is rotatably connected to the steering arm. The steering tie rod is located on the left and right sides of the steering arm, one end of the steering tie rod is rotatably connected to the left suspension mechanism or the right suspension mechanism, and the other end of the steering tie rod is rotatably connected to the steering arm. The steering cylinder and the steering tie rod are located on the same side of the rotatable connection between the steering arm and the vehicle frame, and the steering cylinder and the steering tie rod are distributed vertically.

[0011] Preferably, in the above technical solution, the steering cylinder is located above the steering tie rod.

[0012] Preferably, in the above technical solution, the steering arm has an upper connecting part and a lower connecting part, one end of the upper connecting part of the steering arm is rotatably connected to the vehicle frame, and the other end of the upper connecting part of the steering arm is rotatably connected to the steering cylinder; the lower connecting part of the steering arm is rotatably connected to the steering tie rod.

[0013] More preferably, a reinforcing part is provided at the connection between the steering arm and the steering cylinder and steering tie rod. The reinforcing part can enhance the strength of the connection between the steering arm and the steering cylinder and steering tie rod, and prevent the connection from deforming or breaking due to excessive force during vehicle steering, thereby improving the service life and safety of the steering linkage mechanism.

[0014] Preferably, in the above technical solution, the steering tie rod is rotatably connected to the left suspension mechanism and the right suspension mechanism via a connecting assembly. The connecting assembly includes a tapered pin and a nut. The diameter of the tapered pin gradually decreases from one end to the other. The other end of the tapered pin is threaded. The tapered pin passes through the steering tie rod, the left suspension mechanism, or the right suspension mechanism sequentially from one end to the other and exits. The nut is threadedly connected to the other end of the tapered pin. The connecting assembly ensures a stable and reliable connection between the steering tie rod and the suspension mechanism, while also facilitating disassembly and maintenance.

[0015] More preferably, the other end of the tapered pin and the nut are both provided with through holes, and the through holes of the nut and the tapered pin are connected after the nut is connected. The connecting assembly also includes a cotter pin, which is inserted into the through holes of the nut and the tapered pin. The cotter pin can prevent the nut from loosening due to vibration during vehicle operation, further improving the reliability of the connection.

[0016] Preferably, in the above technical solution, the steering arm is connected to the vehicle frame via a steering arm pin, and a lubrication channel is provided on the steering arm pin to facilitate the rotation and lubrication of the steering arm. The lubrication channel can deliver lubricating oil to the connection between the steering arm and the vehicle frame, reducing friction and extending service life.

[0017] More preferably, the steering arm is provided with a tube, and a sleeve is provided inside the tube. The steering arm pin passes through the sleeve, which makes the connection between the steering arm and the frame more stable and also facilitates maintenance and replacement.

[0018] Preferably, in the above technical solution, the steering cylinder is connected to the vehicle frame via a cylinder support, which provides stable support and ensures that the steering cylinder does not shift during operation.

[0019] Preferably, the steering cylinder is fitted with a dust cover to prevent dust, dirt and other debris from entering the steering cylinder and to protect its normal operation.

[0020] Another objective of this invention is to provide a mining dump truck with a steering linkage mechanism.

[0021] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0022] A mining dump truck includes a frame, a suspension system, and a steering system. The suspension system is connected to the bottom of the frame and is distributed in multiple sets along the front-rear direction of the frame. The suspension system includes a left suspension mechanism and a right suspension mechanism located on both sides of the frame. The steering system is connected between the frame and the left and right suspension mechanisms, and the steering system is the steering linkage mechanism.

[0023] Preferably, in the above technical solution, the vehicle frame includes side supports located on both sides and a connecting frame connecting the side supports on both sides. The left suspension mechanism and the right suspension mechanism both include a slewing bearing and a suspension connecting plate. The suspension connecting plate is connected to the vehicle frame through the slewing bearing.

[0024] The steering arm is rotatably connected to the connecting frame, one end of the steering cylinder is rotatably connected to the side bracket, and one end of the steering tie rod is rotatably connected to the suspension connecting plate.

[0025] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0026] The steering linkage mechanism of this utility model adopts a layered structure for the steering arm, which makes reasonable use of vehicle space, reduces the volume of the frame, makes the structure of the steering linkage mechanism more compact, and improves the stability and reliability of steering.

[0027] The steering linkage mechanism of this utility model can be installed on each axle suspension of the mine car, enabling each axle suspension to achieve steering function. Compared with the traditional design where only the front axle has steering function, it greatly reduces the turning radius of the mine car, improves the mine car's passability in narrow mining roads, effectively solves the problem of "reverse steering" that frequently occurs in space-constrained areas such as mining areas and spoil heaps, and improves transportation efficiency.

[0028] The steering linkage mechanism of this utility model enables each axle suspension to achieve steering, effectively reducing tire slippage during steering, significantly reducing tire wear, extending tire life, and thus reducing the operating cost of mining trucks.

[0029] This utility model adopts an independent suspension system, replacing the traditional integral axle structure, which allows the suspension system to move independently, effectively reducing vehicle vibration when driving on unpaved roads and improving the reliability of the equipment; at the same time, the suspension can be disassembled and installed separately, greatly improving the convenience of maintenance. Attached Figure Description

[0030] Appendix Figure 1 This is a three-dimensional schematic diagram of the steering linkage mechanism in Embodiment 1. Figure 1 ;

[0031] Appendix Figure 2 This is a three-dimensional schematic diagram of the steering linkage mechanism in Embodiment 1. Figure 2 ;

[0032] Appendix Figure 3 This is a three-dimensional schematic diagram of the steering arm in Embodiment 1;

[0033] Appendix Figure 4 This is a schematic cross-sectional view of the steering arm assembly in Embodiment 1;

[0034] Appendix Figure 5 This is a cross-sectional view of the assembly of the steering tie rod and the suspension connecting plate in Embodiment 1.

[0035] In the attached diagrams above:

[0036] 10. Frame; 100. Side bracket; 101. Connecting frame; 110. Slewing bearing; 111. Suspension connecting plate; 112. Sleeve; 113. Washer;

[0037] 20. Steering arm; 200. Upper connecting part; 201. Lower connecting part; 21. Steering cylinder; 22. Steering tie rod;

[0038] 30. Steering arm pin; 300. Lubrication channel; 301. Oil cup; 31. Tube body; 32. Sleeve body; 33. Reinforcing part;

[0039] 40. Hydraulic cylinder support; 41. Hydraulic cylinder pin;

[0040] 50. Tapered pin; 51. Nut; 52. Cotter pin; 53. Retaining ring; 54. Tie rod pin. Detailed Implementation

[0041] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Example 1:

[0044] like Figure 1 , 2 The diagram shows a steering linkage mechanism, in which the steering connection mechanism is connected between the frame 10 and the left and right suspension mechanisms, and is used to drive the left and right suspension mechanisms to rotate relative to the frame.

[0045] The steering linkage mechanism includes a steering arm 20, a steering cylinder 21, and a steering tie rod 22. Wherein:

[0046] The steering arm 20 is rotatably connected to the frame 10; the steering cylinders 21 are located on the left and right sides of the steering arm 20 respectively, that is, two steering cylinders 21 are provided. One end of the steering cylinder 21 is rotatably connected to the frame 10, and the other end of the steering cylinder 21 is rotatably connected to the steering arm 20; the steering tie rods 22 are located on the left and right sides of the steering arm respectively, that is, two steering tie rods 22 are provided. One end of the steering tie rod 22 is rotatably connected to the left suspension mechanism or the right suspension mechanism, and the other end of the steering tie rod 22 is rotatably connected to the steering arm 20.

[0047] In this embodiment, the steering cylinder 21 and the steering tie rod 22 are located on the same side of the rotatable connection between the steering arm 20 and the frame 10, and the steering cylinder 21 and the steering tie rod 22 are distributed vertically, specifically, the steering cylinder 21 is located above the steering tie rod 22. This arrangement makes the steering linkage mechanism more compact and improves the stability and reliability of steering.

[0048] like Figure 3 , 4 As shown: The steering arm 20 has an upper connecting portion 200 and a lower connecting portion 201. One end of the upper connecting portion 200 of the steering arm 20 is rotatably connected to the frame 10, and the other end of the upper connecting portion 200 of the steering arm 20 is rotatably connected to the steering cylinder 21. The lower connecting portion 201 of the steering arm 20 is rotatably connected to the steering tie rod 22. In addition, a reinforcing portion 33 is provided at the connection between the upper connecting portion 200 and the lower connecting portion 201 of the steering arm 20 and the steering cylinder 21 and the steering tie rod 22. The reinforcing portion 33 can be reinforced by means such as welding steel plates.

[0049] The steering arm 20 is connected to the frame 10 via a steering arm pin 30. A lubrication channel 300 is provided on the steering arm pin 30 to facilitate the rotation and lubrication of the steering arm 20. An oil cup 301 is connected to the opening of the lubrication channel 300. A tube 31, such as a steel pipe, is provided inside the steering arm 20. A sleeve 32, such as an aluminum sleeve, is provided inside the tube 31. The steering arm pin 30 passes through the sleeve 32.

[0050] The steering cylinder 21 is specifically connected to the frame 10 via the cylinder support 40. The steering cylinder 21, the cylinder support 40, and the steering arm 20 are all connected via the cylinder pin 41. The steering cylinder 21 is covered with a dust cover (not shown in the figure) to prevent dust and mud from splashing during the operation of the mine car.

[0051] The steering tie rod 22 can adopt an anti-loosening and adjustable structure (such as the patent with publication number CN222512118U), which can not only adjust the length of the steering tie rod 22, but also ensure the reliability during operation.

[0052] like Figure 5As shown: The steering tie rod 22 is rotatably connected to the left and right suspension mechanisms via a connecting assembly. In this embodiment, the connecting assembly includes a tapered pin 50, a nut 51, and a cotter pin 52. The diameter of the tapered pin 50 gradually decreases from one end to the other, and the other end of the tapered pin 50 is threaded. The tapered pin 50 passes sequentially through the steering tie rod 22, the left suspension mechanism, or the right suspension mechanism and exits. The steering tie rod 22 and the tapered pin 50 can be fixed together by a axial elastic retaining ring 20. The nut 51 is threaded to the other end of the tapered pin 50. The tapered pin 50 facilitates disassembly and assembly, and improves reliability after multiple disassembly and assembly. Tightening the nut 51 also ensures that the tapered pin 50 does not fall off, further improving reliability. Both the other end of the tapered pin 50 and the nut 51 have through holes. After the nut 51 and the tapered pin 50 are connected, their through holes are connected. The cotter pin 52 is inserted into the through holes of both the tapered pin 50 and the nut 51, effectively preventing the nut from falling off.

[0053] The steering tie rod 22 is connected to the steering arm 20 by a tie rod pin 54.

[0054] In this embodiment, when the steering arm pin 30, cylinder pin 41, and tie rod pin 54 are connected to the frame 10 or steering arm 20, hexagonal head bolts with holes are used and fixed with steel wire to prevent them from falling off.

[0055] Example 2:

[0056] A mining dump truck includes a frame 10, a suspension system, and a steering system. The suspension system is connected to the bottom of the frame 10 and is distributed in multiple sets along the front-rear direction of the frame 10. Wherein:

[0057] The frame 10 includes side supports 100 located on both sides and a connecting frame 101 connecting the two side supports 100.

[0058] The suspension system includes a left-side suspension mechanism and a right-side suspension mechanism located on both sides of the frame 10. Both the left-side and right-side suspension mechanisms include a slewing bearing 110 and a suspension connecting plate 111, which is connected to the frame 10 via the slewing bearing 110. The suspension connecting plate 111 is shown in a teardrop shape. The suspension system is an independent suspension system, allowing for separate assembly and disassembly, making maintenance and repair more convenient.

[0059] The steering system is connected between the chassis and the suspension connecting plates 111 of the left and right suspension mechanisms. The steering system is the steering linkage mechanism of Embodiment 1. This steering linkage mechanism can be installed on the suspension system of each axle of the mine car, allowing each axle suspension system to achieve steering.

[0060] Specifically: the steering arm 20 is rotatably connected to the middle of the connecting frame 101; one end of the steering cylinder 21 is rotatably connected to the side bracket 100 via the cylinder support 40; and one end of the steering tie rod 22 is rotatably connected to the tip of the suspension connecting plate 111. A sleeve 112, such as a steel sleeve, is provided at the connection between the suspension connecting plate 111 and the steering tie rod 22. A tapered pin 50 passes through the sleeve 112. After repeated disassembly and assembly wear, it is more convenient to directly replace the sleeve 112. Furthermore, a washer 113 is provided between the nut 51 and the suspension connecting plate 111 to ensure that the sleeve 112 and the suspension connecting plate 111 are locked together.

[0061] In the practical application of mining dump trucks, when the vehicle needs to turn, the steering cylinder 21 extends and retracts, pushing / pulling the steering arm 20 to rotate. The rotation of the steering arm 20 drives the steering tie rod 22 to move. The movement of the steering tie rod 22 drives the left or right suspension mechanism to rotate relative to the frame 10, thereby realizing the vehicle's steering.

[0062] Mining dump trucks often encounter complex road conditions and harsh environmental conditions during operation. The steering system in this embodiment is compact, has high transmission efficiency, and good reliability, which can meet the steering requirements of mining dump trucks under various working conditions, thereby improving the vehicle's handling and safety.

[0063] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A steering linkage mechanism, wherein the steering linkage mechanism is connected between a vehicle frame and a left suspension mechanism and a right suspension mechanism, for driving the left suspension mechanism and the right suspension mechanism to rotate relative to the vehicle frame, the steering linkage mechanism comprising a steering arm, a steering cylinder, and a steering tie rod, wherein the steering arm is rotatably connected to the vehicle frame, the steering cylinder is located on the left and right sides of the steering arm respectively, one end of the steering cylinder is rotatably connected to the vehicle frame, and the other end of the steering cylinder is rotatably connected to the steering arm, the steering tie rod is located on the left and right sides of the steering arm respectively, one end of the steering tie rod is rotatably connected to the left suspension mechanism or the right suspension mechanism, and the other end of the steering tie rod is rotatably connected to the steering arm. Its features are: The steering cylinder and steering tie rod are located on the same side of the rotatable connection between the steering arm and the vehicle frame, and the steering cylinder and steering tie rod are distributed on the upper and lower sides.

2. The steering linkage mechanism according to claim 1, characterized in that: The steering cylinder is located above the steering tie rod.

3. The steering linkage mechanism according to claim 1 or 2, characterized in that: The steering arm has an upper connecting part and a lower connecting part. One end of the upper connecting part of the steering arm is rotatably connected to the vehicle frame, and the other end of the upper connecting part of the steering arm is rotatably connected to the steering cylinder. The lower connecting part of the steering arm is rotatably connected to the steering tie rod.

4. The steering linkage mechanism according to claim 3, characterized in that: The connection between the steering arm and the steering cylinder and steering tie rod is provided with a reinforcing part.

5. The steering linkage mechanism according to claim 1, characterized in that: The steering tie rod is rotatably connected to the left suspension mechanism and the right suspension mechanism via a connecting assembly. The connecting assembly includes a tapered pin and a nut. The diameter of the tapered pin gradually decreases from one end to the other. The other end of the tapered pin is threaded. The tapered pin passes through the steering tie rod, the left suspension mechanism, or the right suspension mechanism in sequence from one end to the other and then exits. The nut is threadedly connected to the other end of the tapered pin.

6. The steering linkage mechanism according to claim 5, characterized in that: Both the other end of the tapered pin and the nut have through holes, and the through holes of the nut and the tapered pin are connected after the nut is connected. The connecting assembly also includes a cotter pin, which is inserted into the through holes of both the nut and the tapered pin.

7. The steering linkage mechanism according to claim 1, characterized in that: The steering arm is connected to the vehicle frame via a steering arm pin, and the steering arm pin is provided with a lubrication channel. The steering arm has a tube inside, and a sleeve is installed inside the tube. The steering arm pin passes through the sleeve.

8. The steering linkage mechanism according to claim 1, characterized in that: The steering cylinder is connected to the vehicle frame via a cylinder support; The steering cylinder is covered with a dust cover.

9. A mining dump truck, comprising a frame, a suspension system, and a steering system, wherein the suspension system is connected to the bottom of the frame and is distributed in multiple sets along the longitudinal direction of the frame, the suspension system including a left suspension mechanism and a right suspension mechanism respectively located on both sides of the frame, and the steering system is connected between the frame and the left and right suspension mechanisms, characterized in that: The steering system is the steering linkage mechanism as described in any one of claims 1 to 8.

10. The mining dump truck according to claim 9, characterized in that: The frame includes side supports on both sides and a connecting frame connecting the side supports on both sides. The left suspension mechanism and the right suspension mechanism both include a slewing bearing and a suspension connecting plate. The suspension connecting plate is connected to the frame through the slewing bearing. The steering arm is rotatably connected to the connecting frame, one end of the steering cylinder is rotatably connected to the side bracket, and one end of the steering tie rod is rotatably connected to the suspension connecting plate.

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