Suspension system and mine personnel carrier

Abstract

The utility model discloses a kind of suspension system and mine manned transport vehicle, it is related to coal mine transport vehicle technical field.The suspension system of the utility model includes rear suspension, the rear suspension includes by first coil spring, first damper and V-shaped frame, first coil spring and first damper are respectively provided with two and symmetrically arranged, V-shaped frame includes connecting frame, first connecting rod and second connecting rod, the front side of connecting frame is equipped with the first shaft extending along front-back direction and is hinged with the middle part of frame, the rear side of connecting frame is rotatably equipped with the second shaft extending along left-right direction, the two ends of first connecting rod and the two ends of second connecting rod are respectively fixedly connected with second shaft and rear drive axle, first connecting rod, second connecting rod and rear drive axle are arranged in triangle shape.The suspension system of the utility model can improve the stability of vehicle in the process of advancing, enhance the riding comfort of personnel, and reduce the impact borne by frame to improve service life.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine transport vehicles, specifically to a suspension system and a mining passenger transport vehicle. Background Technology

[0002] Underground personnel transportation in coal mines is an important task of trackless auxiliary transportation. Currently, the main method used is to transport personnel using explosion-proof vehicles modified from ground light trucks. The transmission method, chassis and suspension structure, cab and other aspects of the vehicle mainly follow the technology of ground light trucks.

[0003] Coal mine underground roads have steep slopes and numerous inclines, are uneven, and often contain loose coal and water, resulting in harsh road conditions. This places high demands on vehicle passability and chassis strength. Vehicles with poor shock absorption have generally low shock absorption performance during operation, resulting in significant impact on the chassis and body, greatly reducing the service life of the chassis. Furthermore, poor stability and passability negatively affect the passenger experience. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, this utility model provides a suspension system that can improve the stability of the vehicle during driving, enhance the ride comfort of passengers, and reduce the impact on the frame to improve its service life.

[0006] This utility model embodiment also proposes a mining personnel transport vehicle.

[0007] The suspension system of this utility model embodiment includes: The rear suspension includes a first coil spring, a first damper, a first tie rod, and a V-shaped bracket. Two of the first coil spring and the first damper are respectively provided between the rear beam of the vehicle frame and the rear drive axle and are symmetrically arranged in the left and right directions. The left and right ends of the first tie rod are respectively hinged to the left part of the rear drive axle and the right part of the rear beam of the vehicle frame. The V-frame includes a connecting frame, a first connecting rod, and a second connecting rod. The front side of the connecting frame is provided with a first shaft extending in the front-rear direction and is hinged to the middle of the vehicle frame through the first shaft. The rear side of the connecting frame is rotatably provided with a second shaft extending in the left-right direction. The two ends of the first connecting rod are fixedly connected to the second shaft and the rear drive axle, respectively. The two ends of the second connecting rod are fixedly connected to the second shaft and the rear drive axle, respectively. The first connecting rod, the second connecting rod, and the rear drive axle are arranged in a triangular shape.

[0008] The suspension system of this utility model ensures shock absorption for the vehicle by setting a first coil spring in the rear suspension. Through the first frame and the second frame, the rear drive axle can swing around the frame in the left-right and front-back directions. When passing through rough roads, the frame can maintain a horizontal posture. When the road surface is bumpy, the first coil spring and the first damper of the rear suspension can absorb the impact of the road surface on the frame, improve ride comfort, and extend the service life of the frame.

[0009] In some embodiments, a front suspension is also included, the front suspension including a second coil spring, a second damper and a second tie rod, the second coil spring and the second damper being provided in two symmetrical arrangements in the left-right direction between the front beam of the vehicle frame and the front drive axle, and the left and right ends of the second tie rod being hinged to the left part of the front beam of the vehicle frame and the right part of the front drive axle, respectively.

[0010] In some embodiments, the front suspension further includes two longitudinal tie rods arranged in parallel along the front-rear direction, with the front and rear ends of the tie rods respectively hinged to the front drive axle and the frame beam to constrain a parallelogram connection structure.

[0011] In some embodiments, a limiting unit is further included, which is provided corresponding to the first helical spring and the second helical spring. A spring mounting seat is provided below the first helical spring and the second helical spring. The limiting unit includes a telescopic hydraulic component and a pressure plate. The telescopic hydraulic component is disposed on the spring mounting seat. The movable end of the telescopic hydraulic component passes through the vehicle frame. The pressure plate is disposed on the movable end of the telescopic hydraulic component and is located on the side of the vehicle frame away from the spring mounting seat.

[0012] In some embodiments, a distance sensor, a detection plate, and an alarm are also included. The distance sensor and the detection plate are respectively disposed on the vehicle frame and the spring mounting base. The distance sensor and the alarm are electrically connected. The distance sensor is used to measure the distance between the spring mounting base and the vehicle frame and transmit the measured value to the alarm. The alarm is used to issue an alarm signal when the measured value reaches a set value.

[0013] In some embodiments, the telescopic hydraulic component is coaxially arranged with the corresponding first or second helical spring.

[0014] In some embodiments, a protective shell is also included, which is disposed on the side of the frame away from the spring mounting seat. The protective shell covers the movable end of the telescopic hydraulic component and the pressure plate, and there is a set minimum distance between the top of the protective shell and the pressure plate.

[0015] In some embodiments, the length of the connecting rod is defined as a, and the distance between the rear ends of the two connecting rods and the two connection positions of the rear drive axle is b, then the following condition is satisfied: 2b>a>b.

[0016] In some embodiments, a fixing plate is provided at the rear end of the connecting rod, the fixing plate is fixedly connected to the rear drive axle, and the lower end of the first helical spring is fixedly disposed on the fixing plate.

[0017] The mining personnel transport vehicle of this utility model embodiment includes the suspension system of any of the above embodiments. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the suspension system according to an embodiment of the present invention.

[0019] Figure 2 This is a second-view structural schematic diagram of the suspension system according to an embodiment of the present invention.

[0020] Figure 3 This is a structural schematic diagram of the rear suspension in the suspension system of this utility model embodiment.

[0021] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0022] Figure label: Rear suspension 100; frame 200; front suspension 300; First helical spring 1; First damper 2; First tie rod 3; V-shaped bracket 4; connecting bracket 41; first connecting rod 42; second connecting rod 43; first shaft 44; second shaft 45; 5. Second helical spring; 6. Second damper; 7. Second horizontal tie rod; 8. Longitudinal tie rod; Limiting unit 9; telescopic hydraulic component 91; pressure plate 92; Distance sensor 10; Detector plate 11. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] like Figure 1 , Figure 2 and Figure 3As shown, the suspension system of this utility model embodiment includes a rear suspension 100. The rear suspension 100 includes a first coil spring 1, a first damper 2, a first tie rod 3, and a V-shaped frame 4. The first coil spring 1 and the first damper 2 are respectively provided between the rear beam of the vehicle frame 200 and the rear drive axle and are symmetrically arranged in the left and right directions. The left and right ends of the first tie rod 3 are respectively hinged to the left part of the rear drive axle and the right part of the rear beam of the vehicle frame 200. The V-shaped frame 4 includes a connecting frame 41, a first connecting rod 42, and a second connecting rod 43. The front side of the connecting frame 41 is provided with a first shaft 44 extending in the front-rear direction and is hinged to the middle part of the vehicle frame 200 through the first shaft 44. The rear side of the connecting frame 41 is rotatably provided with a second shaft 45 extending in the left and right direction. The two ends of the first connecting rod 42 are respectively fixedly connected to the second shaft 45 and the rear drive axle. The two ends of the second connecting rod 43 are respectively fixedly connected to the second shaft 45 and the rear drive axle. The first connecting rod 42, the second connecting rod 43, and the rear drive axle are arranged in a triangular shape.

[0025] In this embodiment of the present invention, when the vehicle is traveling on rough roads, if the left and right rear wheels encounter obstacles of different heights, the two first coil springs 1 on the corresponding rear drive axle undergo elastic deformation to achieve shock absorption. Simultaneously, the rear drive axle, through the first connecting rod 42, the second connecting rod 43, the connecting frame 41, and the first axle 44, swings relative to the frame 200 in the left-right direction, thereby ensuring the horizontal posture of the frame 200 and the overall stability of the vehicle. When the left and right rear wheels encounter obstacles of the same height, the two first coil springs 1 on the corresponding rear drive axle undergo elastic deformation to achieve shock absorption. Simultaneously, the rear drive axle, through the first connecting rod 42, the second connecting rod 43, the connecting frame 41, and the second axle 45, swings relative to the frame 200 in the front-rear direction, thereby ensuring the horizontal posture of the frame 200 and the overall stability of the vehicle while reducing the impact force transmitted to the frame 200 through the first connecting rod 42, the second connecting rod 43, and the connecting frame 41, thus improving ride comfort.

[0026] The suspension system of this utility model ensures shock absorption for the vehicle by setting a first coil spring 1 in the rear suspension 100. Through the first frame and the second frame, the rear drive axle can swing around the frame 200 in the left-right and front-back directions. When passing through rough roads, the frame 200 can maintain a horizontal posture. When the road surface is bumpy, the first coil spring 1 and the first damper 2 of the rear suspension 100 can absorb the impact of the road surface on the frame 200, improve ride comfort, and extend the service life of the frame 200.

[0027] In some embodiments, such as Figure 1 , Figure 2 and Figure 4As shown, it also includes a front suspension 300, which includes a second coil spring 5, a second damper 6, and a second tie rod 7. The second coil spring 5 and the second damper 6 are provided between the front beam of the frame 200 and the front drive axle and are symmetrically arranged in the left and right directions. The left and right ends of the second tie rod 7 are respectively hinged to the left part of the front beam of the frame 200 and the right part of the front drive axle.

[0028] The second helical spring 5 and the second damper 6 ensure the elastic connection between the front drive axle and the frame 200, and ensure the shock absorption effect on the frame 200. The second tie rod 7 and the first tie rod 3 work together to further ensure the reliability of the connection between the drive axle and the frame 200.

[0029] In some embodiments, such as Figure 1 As shown, the front suspension 300 also includes a longitudinal tie rod 8. Two longitudinal tie rods 8 are provided in parallel and are arranged in the front-rear direction. The front and rear ends of the longitudinal tie rod 8 are respectively hinged to the front drive axle and the beam of the frame 200 to restrict the parallelogram connection structure.

[0030] The longitudinal tie rod 8 is installed to further increase the reliability of the connection between the frame 200 and the front drive axle, and to constrain the movement of the front drive axle relative to the frame 200 when the second helical spring 5 undergoes elastic deformation on rough road sections, thus ensuring the shock absorption effect.

[0031] In some embodiments, such as Figure 1 and Figure 4 As shown, it also includes a limiting unit 9, which is set corresponding to the first helical spring 1 and the second helical spring 5. A spring mounting seat is provided below the first helical spring 1 and the second helical spring 5. The limiting unit 9 includes a telescopic hydraulic component 91 and a pressure plate 92. The telescopic hydraulic component 91 is located on the spring mounting seat. The movable end of the telescopic hydraulic component 91 passes through the frame 200. The pressure plate 92 is located on the movable end of the telescopic hydraulic component 91 and is located on the side of the frame 200 away from the spring mounting seat.

[0032] When the vehicle is operating normally, the limiting unit 9 has no function. When the vehicle needs to pass through a low-lying area, the telescopic hydraulic component 91 retracts to move the pressure plate 92, thereby compressing the corresponding first coil spring 1 and second coil spring 5. Under the action of the pressure plate 92, the vehicle body moves downward to shorten the distance between the drive axle and the frame 200, thus adjusting the vehicle height and improving the vehicle's passability. Optionally, the telescopic hydraulic component 91 is a hydraulic telescopic cylinder.

[0033] In some embodiments, such as Figure 4As shown, it also includes a distance sensor 10, a detection plate 11, and an alarm. The distance sensor 10 and the detection plate 11 are respectively installed on the frame 200 and the spring mounting seat. The distance sensor 10 and the alarm are electrically connected. The distance sensor 10 is used to measure the distance between the spring mounting seat and the frame 200 and transmit the measured value to the alarm. The alarm is used to issue an alarm signal when the measured value reaches the set value.

[0034] Because the entire suspension system has damping shock absorbers, there is a minimum space limitation between the frame 200 and the drive axle. By setting up a distance sensor 10, a detection plate 11 and an alarm, the distance between the frame 200 and the drive axle can be measured indirectly. That is, when the vehicle height is reduced to the limit position, the alarm will warn the operator to stop the adjustment in time, so as to avoid damage to the connecting parts between the frame 200 and the drive axle, which is safe and reliable.

[0035] In some embodiments, the telescopic hydraulic component 91 is coaxially arranged with the corresponding first helical spring 1 or second helical spring 5. The telescopic hydraulic component 91 guides the first helical spring 1 and the second helical spring 5 to ensure that the first helical spring 1 and the second helical spring 5 undergo elastic deformation in the vertical direction, thereby ensuring the shock absorption effect.

[0036] In some embodiments, a protective shell is also included, which is disposed on the side of the frame 200 away from the spring mounting seat. The protective shell covers the movable end of the telescopic hydraulic component 91 and the pressure plate 92, and there is a set minimum distance between the top of the protective shell and the pressure plate 92.

[0037] By setting up a protective shell, other objects are prevented from entering between the pressure plate 92 and the frame 200, thus avoiding interference with the pressure plate 92 and affecting the adjustment range of the telescopic hydraulic component 91 for the distance between the frame 200 and the drive axle. At the same time, it can prevent the pressure plate 92 from moving away from the frame 200 and causing damage to other components above the frame 200 when the first coil spring 1 and the second coil spring 5 are elastically compressed, ensuring safety and reliability.

[0038] In some embodiments, the length of the connecting rod is defined as a, and the distance between the rear ends of the two connecting rods and the two connection positions of the rear drive axle is b, then the following condition is satisfied: 2b>a>b.

[0039] By limiting the length of the connecting rod, when the first helical spring 1 undergoes a set deformation on rough roads, the rotation angle of the connecting rod relative to the frame 200 is reduced, ensuring the stability and reliability of the frame 200.

[0040] In some embodiments, a fixing plate is provided at the rear end of the connecting rod, the fixing plate is fixedly connected to the rear drive axle, the lower end of the first helical spring 1 is fixedly disposed on the fixing plate, and the fixing plate is connected to the rear drive axle by bolts, thereby increasing the reliability of the connection between the connecting rod and the rear drive axle.

[0041] The following describes a mining personnel transport vehicle according to an embodiment of the present invention.

[0042] The mining personnel transport vehicle of this utility model embodiment includes the suspension system of any of the above embodiments.

[0043] The mining passenger transport vehicle of this utility model, through the setting of the rear suspension, ensures the shock absorption effect of the vehicle, realizes the swaying of the rear drive axle around the frame in the left and right and front and back directions, and can maintain the level posture when passing through rough roads. When the road surface is bumpy, it can absorb the impact of the road surface on the frame, improve the ride comfort, and extend the service life of the frame.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A suspension system, characterized in that, include: The rear suspension includes a first coil spring, a first damper, a first tie rod, and a V-shaped bracket. Two of the first coil spring and the first damper are respectively provided between the rear beam of the vehicle frame and the rear drive axle and are symmetrically arranged in the left and right directions. The left and right ends of the first tie rod are respectively hinged to the left part of the rear drive axle and the right part of the rear beam of the vehicle frame. The V-frame includes a connecting frame, a first connecting rod, and a second connecting rod. The front side of the connecting frame is provided with a first shaft extending in the front-rear direction and is hinged to the middle of the vehicle frame through the first shaft. The rear side of the connecting frame is rotatably provided with a second shaft extending in the left-right direction. The two ends of the first connecting rod are fixedly connected to the second shaft and the rear drive axle, respectively. The two ends of the second connecting rod are fixedly connected to the second shaft and the rear drive axle, respectively. The first connecting rod, the second connecting rod, and the rear drive axle are arranged in a triangular shape.

2. The suspension system according to claim 1, characterized in that, It also includes a front suspension, which includes a second coil spring, a second damper, and a second tie rod. Two of the second coil spring and the second damper are provided between the front beam of the vehicle frame and the front drive axle and are symmetrically arranged in the left and right directions. The left and right ends of the second tie rod are respectively hinged to the left part of the front beam of the vehicle frame and the right part of the front drive axle.

3. The suspension system according to claim 2, characterized in that, The front suspension also includes longitudinal tie rods, two of which are arranged in parallel and along the front-rear direction. The front and rear ends of the longitudinal tie rods are respectively hinged to the front drive axle and the frame beam to restrict a parallelogram connection structure.

4. The suspension system according to claim 2 or 3, characterized in that, It also includes a limiting unit, which is provided corresponding to the first helical spring and the second helical spring. A spring mounting seat is provided below the first helical spring and the second helical spring. The limiting unit includes a telescopic hydraulic component and a pressure plate. The telescopic hydraulic component is provided on the spring mounting seat. The movable end of the telescopic hydraulic component passes through the frame. The pressure plate is provided on the movable end of the telescopic hydraulic component and is located on the side of the frame away from the spring mounting seat.

5. The suspension system according to claim 4, characterized in that, It also includes a distance sensor, a detection plate, and an alarm. The distance sensor and the detection plate are respectively installed on the vehicle frame and the spring mounting base. The distance sensor and the alarm are electrically connected. The distance sensor is used to measure the distance between the spring mounting base and the vehicle frame and transmit the measured value to the alarm. The alarm is used to issue an alarm signal when the measured value reaches a set value.

6. The suspension system according to claim 4, characterized in that, The telescopic hydraulic component is coaxially arranged with the corresponding first or second helical spring.

7. The suspension system according to claim 4, characterized in that, It also includes a protective shell, which is disposed on the side of the frame away from the spring mounting seat. The protective shell covers the movable end of the telescopic hydraulic component and the pressure plate, and there is a set minimum distance between the top of the protective shell and the pressure plate.

8. The suspension system according to any one of claims 1-3, characterized in that, Let the length of the connecting rod be a, and the distance between the rear ends of the two connecting rods and the two connection positions of the rear drive axle be b. Then the following condition is satisfied: 2b>a>b.

9. The suspension system according to any one of claims 1-3, characterized in that, The rear end of the connecting rod is provided with a fixing plate, which is fixedly connected to the rear drive axle, and the lower end of the first helical spring is fixedly disposed on the fixing plate.

10. A mining personnel transport vehicle, characterized in that, Includes the suspension system as described in any one of claims 1-9.

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