An automatic oil filling device for an oil hydraulic shock absorber

Abstract

The present invention discloses an automatic oil filling device for an oil pressure shock absorber, which relates to the technical field of mechanical part maintenance. The key technical points of its technical solution include a frame and a vise arranged on one side of the frame; a horizontal support plate is arranged on the side of the frame away from the vise, a vertical connecting rod is rotatably arranged on the support plate, a transmission gear is fixedly sleeved on the outer side wall of the connecting rod, a first servo motor is arranged on the support plate, and the rotating shaft of the first servo motor is connected with a driving gear that meshes with the transmission gear; a horizontal support frame is arranged on the outer side wall of the connecting rod, an oil inlet pipe is fixedly arranged on the support frame, the oil inlet pipe is connected with an oil pump, a flow sensor for detecting the oil inlet amount is also arranged between the oil inlet pipe and the oil pump, the flow sensor is signal-connected with a controller for receiving the detection signal, and the oil pump is controlled by the flow sensor; it achieves the advantages of automatically filling oil while precisely controlling the oil filling amount, saving time and effort, and reducing waste.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical part maintenance, and particularly to an automatic oil filling device for an oil pressure shock absorber. Background Art

[0002] An oil pressure shock absorber is a component that provides damping in the suspension system of a locomotive and rolling stock. It can attenuate various forms of vibration caused by various factors, and has an important impact on the running safety of the locomotive and rolling stock and the riding comfort. The vertical oil pressure shock absorber of a railway locomotive and rolling stock is installed between the axle box of the wheel set and the side beam of the bogie frame to attenuate the vertical vibration between the wheel set and the bogie frame.

[0003] After the oil pressure shock absorber has been used for a long time, its internal parts may experience oil leakage or rust, reducing its service life. The shock absorber cannot meet the requirements during vehicle operation. Therefore, it is necessary to regularly disassemble and refill the oil pressure shock absorber on the vehicle. In the prior art, refueling is often carried out manually. During refueling, the refueling volume cannot be accurately controlled, which easily causes waste. At the same time, manual refueling is time-consuming and laborious, so it needs to be improved. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an automatic oil filling device for an oil pressure shock absorber, which has the advantages of automatic oil filling, time-saving and labor-saving, quantitative oil filling, and waste reduction.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An automatic oil filling device for an oil pressure shock absorber, characterized in that: it includes a frame arranged vertically, and a vise for fixing the oil pressure shock absorber is fixedly arranged on the side wall of the frame; a horizontal support plate is arranged on the side of the frame away from the vise, a vertical connecting rod is rotatably arranged on the support plate, a transmission gear is fixedly sleeved on the outer side wall of the connecting rod, a first servo motor is also fixedly arranged on the support plate, and a driving gear meshing with the transmission gear is connected to the rotating shaft of the first servo motor; a horizontal support frame is fixedly arranged on the outer side wall of the connecting rod, an oil inlet pipe is fixedly arranged on the support frame, the oil outlet of the oil inlet pipe is located directly above the vise and is arranged towards the vise, the oil inlet pipe is connected to an oil pump, and a flow sensor for detecting the oil inflow volume is also arranged between the oil inlet pipe and the oil pump. The flow sensor is signal-connected to a controller for receiving the detection signal, and the oil pump is controlled by the flow sensor; the controller is signal-connected to the first servo motor, and the controller is used to send a control signal to stop the oil pump from working and a control signal to the first servo motor to work when the flow sensor detects that the oil flow reaches the rated value.

[0007] By adopting the above technical solution, when it is necessary to refuel and maintain the oil pressure shock absorber, the oil pressure shock absorber is fixed on one side of the rack by a vise. The first servo motor on the support plate drives the transmission gear to rotate, so that the support member can rotate along the axial direction of the connecting rod. When the oil outlet of the oil inlet pipe on the support frame is located above the oil pressure shock absorber, the first servo motor stops working. At this time, the oil pump works to inject hydraulic oil into the oil pressure shock absorber through the oil inlet pipe. At the same time, the flow sensor monitors the oil inlet volume in real time. When the oil inlet volume reaches the specified value, the flow sensor sends a signal to the controller, and the controller sends a signal to the oil pump to stop working, stopping the oil injection. At the same time, a working signal is sent to the first servo motor to rotate the support frame away from the oil pressure shock absorber to complete the oil injection; it realizes strict control of the oil inlet volume, reduces unnecessary waste, and has a high degree of automation, saving time and effort.

[0008] Further, a stabilizing plate is fixedly arranged on one side of the rack facing the vise and above the vise. A stabilizing hole for inserting the oil pressure shock absorber is penetrated through the upper surface of the stabilizing plate.

[0009] By adopting the above technical solution, when installing the oil pressure shock absorber, the oil pressure shock absorber can be inserted into the stabilizing hole. The stabilizing hole can effectively prevent the oil pressure shock absorber from tipping over, facilitating the staff to fix the oil pressure shock absorber and improving its stability during refueling.

[0010] Further, an oil-absorbing cotton is arranged on the upper surface of the stabilizing plate.

[0011] By adopting the above technical solution, if a small amount of hydraulic oil splashes outside the shock absorber during refueling, the oil-absorbing cotton can adsorb the hydraulic oil and reduce environmental pollution.

[0012] Further, the oil-absorbing cotton is detachably connected to the stabilizing plate.

[0013] By adopting the above technical solution, the oil-absorbing cotton is disassembled for cleaning or replacement to ensure its good working characteristics.

[0014] Further, a rack is fixedly arranged at the bottom of the support plate. The length direction of the rack is arranged along the height direction of the rack. A second servo motor is arranged on one side of the rack facing the support plate. A clamping gear meshing with the rack is fixedly arranged on the rotating shaft of the second servo motor; a T-shaped strip is integrally formed on one side of the rack facing the rack along its length direction. A T-shaped groove for inserting and sliding the T-shaped strip is opened on one side of the rack facing the rack along its height direction. The inner wall of the T-shaped groove fits with the outer wall of the T-shaped strip.

[0015] By adopting the above technical solution, when refueling and maintaining oil-pressure shock absorbers of different heights, the rack is driven by the second servo motor to move in the vertical direction. At this time, the T-shaped strip slides along its length direction in the T-shaped groove, and the height of the support plate changes, so as to realize the adjustment and control of the distance in the vertical direction between the support frame and the oil-pressure shock absorber, facilitating the device to refuel oil-pressure shock absorbers of different heights and improving the applicability of the device.

[0016] Further, a proximity switch signal-connected to the controller is fixedly arranged at the bottom of the support frame, and the second servo motor is signal-connected to the controller. The controller is used for sending a control signal for stopping working to the second servo motor when the support frame approaches the oil-pressure shock absorber.

[0017] By adopting the above technical solution, when the support plate moves in the vertical direction, when the proximity switch below the support frame approaches the oil-pressure shock absorber, the proximity switch sends a signal to the controller, and the controller sends a signal for stopping working to the second servo motor, so that the support frame automatically moves to the upper position close to the hydraulic shock absorber, without the need for the staff to start and stop the second servo motor, further improving the automation degree of the equipment and facilitating operation.

[0018] Further, a filter is connected between the oil pump and the flow sensor.

[0019] By adopting the above technical solution, the hydraulic oil conveyed by the oil pump is filtered by the filter, effectively removing the impurities in the oil, improving the purity of the oil conveyed into the oil-pressure shock absorber, and ensuring good use effect after maintenance.

[0020] Further, the controller is a programmable controller, and the controller is signal-connected to a touch screen.

[0021] By adopting the above technical solution, the flow value controlled by the flow sensor is changed through the touch screen to adapt to different working requirements and facilitate the operation of the staff.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. By signal-connecting the flow sensor to the controller and the oil pump to the controller, when the oil inlet pipe is feeding oil, the oil inlet amount is monitored in real time. When the oil inlet amount reaches the specified value, the flow sensor sends a signal to the controller, and the controller sends a signal for the oil pump to stop working, stopping oil injection, realizing strict control of the oil inlet amount, and reducing unnecessary waste during maintenance;

[0024] 2. The first servo motor is signal - connected to the controller. When refueling is required, the first servo motor drives the driving gear to rotate, and the driving gear drives the transmission gear to rotate. Thus, the support frame can rotate along the axial direction of the connecting rod, rotate the oil outlet of the oil inlet pipe above the oil - pressure shock absorber for oil injection. After the oil injection is completed, rotate the support frame away from the oil - pressure shock absorber to complete the oil injection. It has a high degree of automation, saving time and effort.

[0025] 3. The second servo motor drives the rack to move in the vertical direction. At this time, the T - shaped strip slides along its length direction in the T - shaped groove, and the height of the support plate changes, thereby realizing the adjustment and control of the vertical distance between the support frame and the oil - pressure shock absorber, facilitating the device to refuel oil - pressure shock absorbers of different heights and improving the applicability of the device.

[0026] 4. The proximity switch arranged below the support frame is signal - connected to the controller. When the second servo motor drives the support frame to approach the oil - pressure shock absorber, the proximity switch sends a signal to the controller, and the controller sends a stop - working signal to the second servo motor, so that the support frame automatically moves to the upper position close to the hydraulic shock absorber. There is no need for staff to start and stop the second servo motor, further improving the automation degree of the equipment and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of an automatic oil - adding device for an oil - pressure shock absorber in the embodiment;

[0028] Figure 2 It is a schematic structural diagram of an automatic oil - adding device for an oil - pressure shock absorber in the embodiment;

[0029] Figure 3 It is a system block diagram of an automatic oil - adding device for an oil - pressure shock absorber in the embodiment.

[0030] In the figure: 1. Frame; 11. Vise; 12. Oil - pressure shock absorber; 2. Support plate; 21. Connecting rod; 211. Transmission gear; 22. Support frame; 23. Oil inlet pipe; 24. Proximity switch; 3. First servo motor; 31. Driving gear; 4. Oil pump; 41. Flow sensor; 5. Controller; 6. Stabilizing plate; 61. Stabilizing hole; 62. Absorbent cotton; 7. Rack; 71. T - shaped strip; 72. T - shaped groove; 8. Second servo motor; 81. Clamping gear; 9. Filter; 10. Touch screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following further elaborates on the present invention with reference to the accompanying drawings.

[0032] Embodiment:

[0033] An automatic oil - adding device for an oil - pressure shock absorber, referring toFigure 1 and Figure 2 , which includes a frame 1 arranged vertically. A vise 11 for fixing the oil-pressure shock absorber 12 is fixedly arranged on the side wall of the frame 1 through bolts. The vise 11 is a prior art and will not be elaborated here. A horizontal support plate 2 is arranged on one side of the frame 1 away from the vise 11. A vertical connecting rod 21 is rotatably arranged on the support plate 2 through a rotating shaft. A transmission gear 211 is key-connected to the outer side wall of the connecting rod 21. A first servo motor 3 is fixedly arranged on the support plate through bolts. A driving gear 31 meshing with the transmission gear 211 is key-connected to the rotating shaft of the first servo motor 3. When the first servo motor 3 works, it can drive the connecting rod 21 to rotate along its axis direction.

[0034] Refer to Figure 1 and Figure 2 , a horizontal support frame 22 is integrally formed on the outer side wall of the connecting rod 21. An oil inlet pipe 23 is fixedly arranged on the support frame 22 through nylon ties. The oil outlet of the oil inlet pipe 23 is located directly above the vise 11 and is arranged towards the vise 11. The oil inlet pipe 23 is connected to an oil pump 4. A flow sensor 41 for detecting the oil inflow is also arranged between the oil inlet pipe 23 and the oil pump 4. The flow sensor 41 is signal-connected to a controller 5 for receiving the detection signal. The controller 5 is a programmable controller, and the oil pump 4 is controlled by the flow sensor 41; the controller 5 is signal-connected to the first servo motor 3. When the flow sensor 41 detects that the oil flow reaches the rated value, the controller 5 is used to send a control signal to stop the oil pump 4 from working and send a control signal to the first servo motor 3 to work; a touch screen 10 signal-connected to the controller 5 is also arranged on the frame 1. The touch screen 10 is used to change the flow value controlled by the flow sensor 41.

[0035] Refer to Figure 1 , a stabilizing plate 6 is welded and fixed on one side of the frame 1 facing the vise 11 and above the vise 11. A stabilizing hole 61 for inserting the oil-pressure shock absorber 12 is penetrated through the upper surface of the stabilizing plate 6. When installing the oil-pressure shock absorber 12, the stabilizing hole 61 can effectively prevent the oil-pressure shock absorber 12 from tipping over; an oil-absorbing cotton 62 is arranged on the upper surface of the stabilizing plate 6 through screws. If a small amount of hydraulic oil splashes outside the shock absorber during refueling, the oil-absorbing cotton 62 can adsorb the hydraulic oil and reduce environmental pollution.

[0036] Refer to Figure 2, a rack 7 is fixedly arranged at the bottom of the support plate 2 by welding. The length direction of the rack 7 is arranged along the height direction of the frame 1. On one side of the frame 1 facing the support plate 2, a second servo motor 8 is fixedly arranged by bolts. A clamping gear 81 meshing with the rack 7 is key-connected to the rotating shaft of the second servo motor 8; on one side of the rack 7 facing the frame 1, a T-shaped strip 71 is integrally formed along its length direction. On one side of the frame 1 facing the rack 7, a T-shaped groove 72 for inserting and sliding the T-shaped strip 71 is opened along its height direction. The inner wall of the T-shaped groove fits with the outer wall of the T-shaped strip 71; the second servo motor 8 can drive the support plate 2 to move in the vertical direction, realizing the adjustment and control of the distance in the vertical direction between the support frame 22 and the oil pressure shock absorber 12, facilitating the device to refuel the oil pressure shock absorbers 12 with different heights.

[0037] Refer to Figure 2 , a proximity switch 24 signal-connected to the controller 5 is fixedly arranged at the bottom of the support frame 22. The second servo motor 8 is signal-connected to the controller 5. The controller 5 is used to send a control signal for stopping working to the second servo motor 8 when the support frame 22 approaches the oil pressure shock absorber 12; thus, the support frame 22 automatically moves to a position above the hydraulic shock absorber, eliminating the need for staff to start and stop the second servo motor 8, further improving the automation degree of the equipment and facilitating operation.

[0038] Refer to Figure 2 , a filter 9 is connected between the oil pump 4 and the flow sensor 41. The hydraulic oil conveyed by the oil pump 4 is filtered through the filter 9 to effectively remove impurities in the oil, improve the purity of the oil conveyed into the oil pressure shock absorber 12, and ensure good use effect after its maintenance.

[0039] The working principle is as follows:

[0040] When it is necessary to refuel and maintain the hydraulic shock absorber 12, it is passed through the stable hole 61 and fixed to one side of the frame 1 by the vise 11. At this time, the equipment is started, and the first servo motor 3 works to drive the transmission gear 211 to rotate, so that the support member can rotate along the axial direction of the connecting rod 21. When the oil outlet of the oil inlet pipe 23 on the support frame 22 is located above the hydraulic shock absorber 12, the first servo motor 3 stops working; at this time, the second servo motor 8 works, and the second servo motor 8 drives the support plate 2 to move in the vertical direction. When the proximity switch 24 below the support frame 22 approaches the hydraulic shock absorber 12, the proximity switch 24 sends a signal to the controller 5, and the controller 5 sends a signal to stop the second servo motor 8 from working, so that the support frame 22 automatically moves to a position above the hydraulic shock absorber; at this time, the controller 5 sends a working signal to the oil pump 4, and injects hydraulic oil into the hydraulic shock absorber 12 through the oil inlet pipe 23. At the same time, the flow sensor 41 monitors the oil intake in real time. When the oil intake reaches the specified value, the flow sensor 41 sends a signal to the controller 5, and the controller 5 sends a signal to stop the oil pump 4 from working to stop oil injection; then the controller 5 sends a working signal to the second servo motor 8 to drive the support frame 22 to move away from the hydraulic shock absorber 12. At the same time, the controller 5 sends a working signal to the first servo motor 3 to rotate the support frame 22 away from the hydraulic shock absorber 12 to complete oil injection; it realizes strict control of the oil intake, reduces unnecessary waste, and has a high degree of automation, saving time and effort.

[0041] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An automatic oil filling device for an oil hydraulic shock absorber, characterized in that: It includes a frame (1) arranged vertically. A vise (11) for fixing an oil shock absorber (12) is fixedly arranged on the side wall of the frame (1). On one side of the frame (1) away from the vise (11), there is a horizontal support plate (2). A vertical connecting rod (21) is rotatably arranged on the support plate (2). A transmission gear (211) is fixedly sleeved on the outer side wall of the connecting rod (21). A first servo motor (3) is also fixedly arranged on the support plate (2). The rotating shaft of the first servo motor (3) is connected with a driving gear (31) meshing with the transmission gear (211). A horizontal support frame (22) is fixedly arranged on the outer side wall of the connecting rod (21). An oil inlet pipe (23) is fixedly arranged on the support frame (22). The oil outlet of the oil inlet pipe (23) is located directly above the vise (11) and is arranged towards the vise (11). The oil inlet pipe (23) is connected to an oil pump (4). A flow sensor (41) for detecting the oil inflow is also arranged between the oil inlet pipe (23) and the oil pump (4). The flow sensor (41) is signal-connected to a controller (5) for receiving the detection signal. The oil pump (4) is controlled by the flow sensor (41). The controller (5) is signal-connected to the first servo motor (3). When the flow sensor (41) detects that the oil flow reaches the rated value, the controller (5) is used to send a control signal for the oil pump (4) to stop working and send a control signal for the first servo motor (3) to work. A rack (7) is fixedly arranged at the bottom of the support plate (2). The length direction of the rack (7) is arranged along the height direction of the frame (1). A second servo motor (8) is arranged on one side of the frame (1) facing the support plate (2). A clamping gear (81) meshing with the rack (7) is fixedly arranged on the rotating shaft of the second servo motor (8). A T-shaped strip (71) is integrally formed on one side of the rack (7) facing the frame (1) along its length direction. A T-shaped groove (72) for inserting and sliding the T-shaped strip (71) is opened on one side of the frame (1) facing the rack (7) along its height direction. The inner wall of the T-shaped groove (72) is in mutual fit with the outer wall of the T-shaped strip (71). A proximity switch (24) signal-connected to the controller (5) is fixedly arranged at the bottom of the support frame (22). The second servo motor (8) is signal-connected to the controller (5). When the support frame (22) approaches the oil shock absorber (12), the controller (5) is used to send a control signal for the second servo motor (8) to stop working.

2. The automatic oil filling device for an oil pressure shock absorber according to claim 1, wherein: On one side of the frame (1) facing the vise (11) and above the vise (11), a stabilizing plate (6) is fixedly arranged. A stabilizing hole (61) for inserting the oil shock absorber (12) is penetrated through the upper surface of the stabilizing plate (6).

3. The automatic oil filling device for an oil pressure shock absorber according to claim 2, characterized in that: An oil-absorbing cotton (62) is arranged on the upper surface of the stabilizing plate (6).

4. The automatic oil filling device for an oil pressure shock absorber according to claim 3, characterized in that: The oil-absorbing cotton (62) is detachably connected to the stabilizing plate (6).

5. The automatic oil filling device for an oil pressure shock absorber according to claim 1, characterized in that: A filter (9) is connected between the oil pump (4) and the flow sensor (41).

6. The automatic oil filling device for an oil pressure shock absorber according to claim 1, characterized in that: The controller (5) is a programmable controller, and the controller (5) is signal-connected to a touch screen (10).

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