Passive mining vehicle container self-adaptive horizontal suspension system

Abstract

The invention belongs to the field of coal mine underground auxiliary transportation equipment, and particularly relates to a self-adaptive horizontal suspension system for a container of a passive mining vehicle. Comprising a container and a rack which are connected through a swing joint, balance oil cylinders are arranged on the two sides of a swing shaft of the swing joint, the upper ends of the balance oil cylinders are hinged to the container, and the lower ends of the balance oil cylinders are hinged to the rack; the balance oil cylinders located on the same side of the swing shaft are connected with the same self-adaptive horizontal controller, the self-adaptive horizontal controller comprises a balance oil cylinder control valve, a follower and a transmission mechanism, the balance oil cylinder control valve and the transmission mechanism are installed on the machine frame, one end of the follower is connected with the container, and the other end of the follower is connected with the transmission mechanism. The output end of the transmission mechanism can adjust opening and closing of the balance oil cylinder control valve. Passive self-adaptive transverse gradient balance adjustment of the cargo box is achieved through the mechanical hydraulic system, only hydraulic system power arranged on a vehicle needs to be used, and a power source and a complex sensor control circuit do not need to be additionally arranged.

Description

Technical Field

[0001] The invention belongs to the field of auxiliary transportation equipment in underground coal mines, and in particular relates to a passive mining vehicle cargo box adaptive horizontal suspension system. Background Art

[0002] Explosion-proof trackless rubber-wheeled vehicles are often used to transport materials and equipment in coal mines. Affected by geological conditions, the road conditions in coal mines are relatively poor, with ups and downs and many slopes. When the transport vehicle is traveling on a transverse slope, the lateral stability of the vehicle body deteriorates. Under the gravity of the cargo box, the uneven load on the suspension on both sides of the vehicle body causes the cargo box to further deflect, resulting in the spillage of materials in the cargo box and even the instability of the center of gravity, causing a rollover accident, which seriously threatens the safe production operation of the mine and greatly reduces the production and transportation efficiency of the coal mine. Therefore, it is necessary to improve the lateral stability of the vehicle body when the cargo vehicle is transporting on the transverse slope in the coal mine.

[0003] At present, most of the research on the slope stability of cargo vehicles is concentrated on the longitudinal ramp, and there are fewer methods for the lateral slope stability of vehicles. Most of them collect the deflection angle of the vehicle cargo box through the sensor control system and then perform active correction adjustment. This control method has high requirements on the sensor accuracy and the response sensitivity of the control system. In addition, the numerous electrical components are difficult to meet the explosion-proof performance requirements of electrical equipment in coal mines, and it is impossible to obtain formal safety standards certificates. Therefore, this type of control system solution is difficult to adapt to the special environmental requirements of coal mines. It is necessary to develop a cargo box slope stability solution suitable for vehicles in coal mines. Summary of the invention

[0004] In response to the problems raised by the background technology, the present invention proposes a passive mining vehicle cargo box adaptive horizontal suspension system, which realizes adaptive horizontal adjustment of the lateral ramp of the vehicle cargo box based on a mechanical hydraulic structure, thereby improving the vehicle's ramp driving stability.

[0005] The present invention provides the following technical solution: a passive mining vehicle cargo box adaptive horizontal suspension system, comprising a cargo box and a frame, the cargo box and the frame being connected via a swing joint, balancing cylinders being arranged on both sides of a swing axis of a swing node, the upper end of the balancing cylinder being hinged to the cargo box, and the lower end being hinged to the frame; the balancing cylinders located on the same side of the swing axis are connected to the same adaptive horizontal controller, the adaptive horizontal controller comprising a balancing cylinder control valve, a follower and a transmission mechanism, the balancing cylinder control valve and the transmission mechanism being mounted on the frame, one end of the follower being connected to the cargo box, and the other end being connected to the transmission mechanism, and the output end of the transmission mechanism being able to adjust the opening and closing of the balancing cylinder control valve.

[0006] Furthermore, the transmission mechanism of the adaptive horizontal controller includes a moving rail and a static rail. The static rail is fixed on the frame. The moving rail is assembled on the static rail and can slide linearly. The follower is connected to the moving rail and can push and pull the moving rail. The moving rail is connected to the valve switch control rod of the balancing cylinder control valve.

[0007] Furthermore, the torque is transmitted between the moving rail and the valve switch control rod through buffer damping.

[0008] Furthermore, a movable slider and a positioning slider are provided on the movable rail, the positioning slider is fixed on the movable rail, the movable slider can slide between the two positioning sliders, the follower is hinged to the movable slider, and the sliding direction of the movable slider is parallel to the sliding direction of the movable rail.

[0009] Furthermore, the swing node includes an upper hinge plate and a lower hinge plate, the upper hinge plate is fixed to the bottom of the cargo box, the lower hinge plate is fixed to the frame, and the upper hinge plate and the lower hinge plate are hinged by a pin shaft.

[0010] Furthermore, a spring pad is installed on the top surface of the frame.

[0011] Furthermore, the swing node is located on the center line of the cargo box in the width direction, and the balancing cylinders are symmetrically arranged on both sides of the center line of the cargo box in the width direction.

[0012] Furthermore, the movable rail is installed in the dovetail groove of the static rail, and the movable rail fits in the dovetail groove and can slide freely.

[0013] Furthermore, the movable slider and the positioning slider are installed in the dovetail groove of the movable rail, the movable slider fits with the dovetail groove and can slide freely, and the positioning slider fits with the dovetail groove and is fixed in the dovetail groove by a tightening screw.

[0014] Furthermore, the adaptive horizontal controller includes two balancing cylinder control valves, which respectively control two balancing cylinders. The two balancing cylinder control valves are symmetrically arranged on both sides of the static rail, and the two balancing cylinder control valves are connected to the same valve switch control rod.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The present invention provides a passive mining vehicle cargo box adaptive horizontal suspension system. Based on the hydraulic system equipped by the vehicle itself, four sets of balancing cylinders are added. Without the need for additional power sources and complex sensor control circuits, adaptive lateral slope balance adjustment of the cargo box can be achieved, thereby avoiding the use of the currently commonly used sensor triggering scheme and meeting the explosion-proof requirements of underground coal mines. At the same time, the system has a simple structure, reliable connection, and high reliability, which plays a certain positive role in improving the safety and stability of vehicles in underground coal mines in transporting materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a passive mining vehicle cargo box adaptive horizontal suspension system;

[0018] Figure 2 is a schematic diagram of an adaptive level controller;

[0019] Figure 3 A cross-sectional view of the adaptive level controller.

[0020] In the figure: 1-Balancing cylinder; 2-Adaptive level controller; 2.1-Balancing cylinder control valve; 2.2-Moving rail; 2.3-Static rail; 2.4-Valve switch control lever; 2.5-Buffer damping; 2.6-Moving slider; 2.7-Positioning slider; 2.8-Tension screw; 2.9-Follower; 3-Lower hinge plate; 4-Upper hinge plate; 5-Cargo box; 6-Frame; 7-Pin shaft; 8-Spring pad. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown: a passive mining vehicle cargo box adaptive horizontal suspension system, including a cargo box 5 and a frame 6, the cargo box 5 and the frame 6 are connected by a swing joint, and balancing cylinders 1 are arranged on both sides of the swing axis of the swing node, the upper end of the balancing cylinder 1 is hinged to the cargo box 5, and the lower end is hinged to the frame 6; the balancing cylinders 1 located on the same side of the swing axis are connected to the same adaptive horizontal controller 2, the adaptive horizontal controller 2 includes a balancing cylinder control valve 2.1, a follower 2.9 and a transmission mechanism, the balancing cylinder control valve 2.1 and the transmission mechanism are installed on the frame 6, one end of the follower 2.9 is connected to the cargo box 5, and the other end is connected to the transmission mechanism, the output end of the transmission mechanism can adjust the opening and closing of the balancing cylinder control valve 2.1, and the balancing cylinder control valve 2.1 controls the telescopic action of the balancing cylinder 1.

[0023] The swing node includes an upper hinge plate 4 and a lower hinge plate 3 . The upper hinge plate 4 is fixed to the bottom of the cargo box 5 , and the lower hinge plate 3 is fixed to the frame 6 . The upper hinge plate 4 and the lower hinge plate 3 are hinged via a pin shaft 7 .

[0024] The transmission mechanism of the adaptive level controller 2 includes a moving rail 2.2 and a static rail 2.3. The static rail 2.3 is fixed on the frame 6. The moving rail 2.2 is assembled on the static rail 2.3 and can slide linearly. The follower 2.9 is connected to the moving rail 2.2 and can push and pull the moving rail 2.2. The moving rail 2.2 is connected to the valve switch control rod 2.4 of the balance cylinder control valve 2.1.

[0025] The moving rail 2.2 and the valve switch control rod 2.4 transmit torque via the buffer damper 2.5, and the impact of slight shaking of the cargo box 5 on the valve switch control rod 2.4 is filtered by the buffer damper 2.5.

[0026] The movable rail 2.2 is provided with a movable slider 2.6 and a positioning slider 2.7. The positioning slider 2.7 is fixed on the movable rail 2.2. The movable slider 2.6 can slide between the two positioning sliders 2.7. The follower 2.9 is hinged to the movable slider 2.6. The sliding direction of the movable slider 2.6 is parallel to the sliding direction of the movable rail 2.2.

[0027] When the cargo box 5 produces a lateral horizontal deflection, the upper hinge plate 4 deflects with the cargo box 5 relative to the lower hinge plate 4; the cargo box 5 drags the moving slider 2.6 to slide on the moving rail 2.2 through the follower 2.9. When the inclination angle of the cargo box 5 is small, the moving slider 2.6 does not touch the positioning slider 2.7, the moving rail 2.2 does not move, the balancing cylinder control valve 2.1 is not triggered, and the balancing cylinder 1 does not work; when the inclination angle of the cargo box 5 is large, the moving slider 2.6 is sufficient to push the positioning slider 2.7, the moving rail 2.2 The dynamic force acts on the valve switch control rod 2.4 through the buffer damper 2.5. When the cargo box 5 is deflected, one side is lifted and the other side is pressed down. Accordingly, the follower 2.9 of the adaptive horizontal controller 2 on one side of the cargo box 5 generates a pulling force on the moving slider 2.6, and the follower 2.9 of the adaptive horizontal controller 2 on the other side generates a thrust on the moving slider 2.6. The forces acting on the balancing cylinder control valves 2.1 on both sides are opposite, so that the balancing cylinders 1 on both sides of the cargo box 5 move in the opposite direction to pull the cargo box 5 back to a horizontal state.

[0028] The lengths of the static rail 2.3, the moving rail 2.2 and the buffer damper 2.5 should be appropriately adjusted according to the installation positions of the follower 2.9 and the adaptive level controller 2 to ensure that the balancing cylinder control valve 2.1 can be accurately triggered when the cargo box 5 is tilted; the positioning slider 2.7 can adjust its position on the moving rail 2.2 by the tightening screw 2.8, and the positioning slider 2.7 can be adjusted according to the vehicle structure, the cargo load of the cargo box and the transverse slope of the lane. The closer the positioning slider 2.7 is to the outside of the vehicle body, the greater the transverse slope when the system is triggered.

[0029] A spring pad 8 is installed on the top surface of the frame 6 to prevent the cargo box 5 from impacting the frame 6 when it swings.

[0030] The swing node is located on the center line of the cargo box 5 in the width direction, and the balancing cylinders 1 are symmetrically arranged on both sides of the center line of the cargo box 5 in the width direction.

[0031] The movable rail 2.2 is installed in the dovetail groove of the static rail 2.3. The movable rail 2.2 fits in the dovetail groove and can slide freely. The dovetail groove structure can prevent the movable rail 2.2 from falling out.

[0032] The movable slider 2.6 and the positioning slider 2.7 are installed in the dovetail groove of the movable rail 2.2. The movable slider 2.6 fits with the dovetail groove and can slide freely. The positioning slider 2.7 fits with the dovetail groove and is fixed in the dovetail groove by the tightening screw 2.8. When the tightening screw 2.8 is tightened downward, the positioning slider 2.7 is propped up, and the positioning slider 2.7 is pressed against the movable rail 2.2 to fix its position.

[0033] The adaptive level controller 2 comprises two balancing cylinder control valves 2.1, which respectively control two balancing cylinders 1. The two balancing cylinder control valves 2.1 are symmetrically arranged on both sides of the static rail 2.3, and the two balancing cylinder control valves 2.1 are connected to the same valve switch control rod 2.4.

[0034] The present invention is a passive mining vehicle cargo box adaptive horizontal suspension system. The vehicle models implemented include but are not limited to integral vehicles and articulated vehicles. The implementation method is not limited to mining vehicles, but can be applied to ground vehicles and other special industry operation vehicles.

[0035] 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 rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A passive mining vehicle cargo box adaptive horizontal suspension system, characterized by: The invention comprises a cargo box (5) and a frame (6), wherein the cargo box (5) and the frame (6) are connected via a swing joint, and a balancing oil cylinder (1) is arranged on both sides of the swing axis of the swing node, wherein the upper end of the balancing oil cylinder (1) is hinged to the cargo box (5), and the lower end is hinged to the frame (6); the balancing oil cylinder (1) located on the same side of the swing axis is connected to the same adaptive level controller (2), and the adaptive level controller (2) comprises a balancing oil cylinder control valve (2.1), a follower (2.9) and a transmission mechanism, wherein the balancing oil cylinder control valve (2.1) and the transmission mechanism are installed on the frame (6), one end of the follower (2.9) is connected to the cargo box (5), and the other end is connected to the transmission mechanism, and the output end of the transmission mechanism can adjust the opening and closing of the balancing oil cylinder control valve (2.1).

2. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 1 is characterized by: The transmission mechanism of the adaptive level controller (2) comprises a movable rail (2.2) and a static rail (2.3), wherein the static rail (2.3) is fixed on a frame (6), the movable rail (2.2) is assembled on the static rail (2.3) and can slide linearly, the follower (2.9) is connected to the movable rail (2.2) and can push and pull the movable rail (2.2), and the movable rail (2.2) is connected to a valve switch control rod (2.4) of a balancing oil cylinder control valve (2.1).

3. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 2 is characterized by: The torque is transmitted between the movable rail (2.2) and the valve switch control rod (2.4) via the buffer damping (2.5).

4. A passive mining vehicle cargo box adaptive horizontal suspension system according to claim 2 or 3, characterized in that: The movable rail (2.2) is provided with a movable slider (2.6) and a positioning slider (2.7), the positioning slider (2.7) is fixed on the movable rail (2.2), the movable slider (2.6) can slide between the two positioning sliders (2.7), the follower (2.9) is hinged to the movable slider (2.6), and the sliding direction of the movable slider (2.6) is parallel to the sliding direction of the movable rail (2.2).

5. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 1 is characterized by: The swing node comprises an upper hinge plate (4) and a lower hinge plate (3); the upper hinge plate (4) is fixed to the bottom of the cargo box (5); the lower hinge plate (3) is fixed to the frame (6); the upper hinge plate (4) and the lower hinge plate (3) are hinged via a pin shaft (7).

6. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 1, characterized in that: A spring pad (8) is installed on the top surface of the frame (6).

7. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 5, characterized in that: The swing node is located on the center line of the cargo box (5) in the width direction, and the balancing cylinders (1) are symmetrically arranged on both sides of the center line of the cargo box (5) in the width direction.

8. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 4, characterized in that: The movable rail (2.2) is installed in the dovetail groove of the static rail (2.3), and the movable rail (2.2) fits in the dovetail groove and can slide freely.

9. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 4, characterized in that: The movable slider (2.6) and the positioning slider (2.7) are installed in the dovetail groove of the movable rail (2.2); the movable slider (2.6) fits in the dovetail groove and can slide freely; the positioning slider (2.7) fits in the dovetail groove and is fixed in the dovetail groove by a tightening screw (2.8).

10. The passive mining vehicle cargo box adaptive horizontal suspension system according to claim 2, characterized in that: The adaptive level controller (2) comprises two balancing oil cylinder control valves (2.1), the two balancing oil cylinder control valves (2.1) respectively controlling two balancing oil cylinders (1), the two balancing oil cylinder control valves (2.1) being symmetrically arranged on both sides of the static rail (2.3), and the two balancing oil cylinder control valves (2.1) being connected to the same valve switch control rod (2.4).

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