Displacement-resistant mechanism of oil seal testing machine

Abstract

The utility model discloses an oil seal testing machine anti-play mechanism, which comprises a servo motor, a rotating shaft, a cam mechanism and a bottom plate platform, the cam mechanism is mounted on the rotating shaft and comprises a synchronizing wheel, a cam, a cam ejector rod, a rolling bearing and a play fixing plate, the rotating shaft penetrates through the cam and the synchronizing wheel, the elliptical surface of the cam is in contact fit with the rolling bearing, and the cam ejector rod is mounted on the bottom plate platform. The rolling bearing is installed at one end of the cam ejector rod, the cam ejector rod penetrates through the play fixing plate, the other end of the cam ejector rod is matched with the test cavity, the synchronous wheel is driven by the servo motor to drive the rotating shaft to rotate, the cam swings in a reciprocating mode along with movement of the rotating shaft, and the rolling bearing drives the cam ejector rod to move in a reciprocating mode to achieve play of the test cavity. Through the above mode, the displacement-resistant mechanism of the oil seal testing machine realizes high-precision control through the joint cooperation of the servo motor and the cam mechanism, can provide large-power thrust output, achieves high-frequency action rhythm, and finally realizes working condition simulation of high-frequency displacement of a test cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seal test fixtures, in particular to an anti-vibration mechanism of an oil seal test machine. Background Art

[0002] An oil seal is a mechanical component used to seal oil. Its primary function is to prevent the outflow of internal fluids and the ingress of external contaminants. Specifically, an oil seal isolates the components of a transmission that require lubrication from the output components, preventing lubricant leakage. Widely used in mechanical equipment such as gearboxes and hydraulic cylinders, oil seals are an integral part of rotating and moving component assemblies.

[0003] The oil seal pressure test is mainly to verify the sealing performance and durability of the oil seal under specific pressure conditions to ensure its stable operation in mechanical equipment. By simulating the real working conditions of the oil seal for a long time, we can have a specific understanding of the actual performance of the oil seal.

[0004] When conducting pressure tests on oil seals, some tests require simulation of rapid movement during high-speed rotation of the oil seal. Currently, cylinders are generally used to push the test cavity or voice coil motors are used to simulate cavity movement, but both methods have some defects:

[0005] When using a cylinder to push the test cavity, the slow response speed of the cylinder will result in the action rhythm not meeting the experimental effect; when using a voice coil motor, insufficient thrust will occur, resulting in the inability to push the test cavity and the failure to achieve the test purpose. Utility Model Content

[0006] The main technical problem solved by the utility model is to provide an anti-vibration mechanism for an oil seal testing machine, which realizes high-precision control through the cooperation of a servo motor and a cam mechanism, can provide a large-power thrust output, achieve a high-frequency action rhythm, and ultimately realize the working condition simulation of high-frequency vibration of the test cavity, thereby ensuring the accuracy of experimental data collection.

[0007] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an anti-movement mechanism of an oil seal testing machine, comprising: a servo motor, a rotating shaft, a cam mechanism and a base plate platform, wherein the servo motor and the cam mechanism are respectively installed on both sides of the base plate platform, and the cam mechanism is installed on the rotating shaft, and the cam mechanism comprises: a synchronous wheel, a cam, a cam push rod, a rolling bearing and a moving fixed plate, the rotating shaft passes through the cam and the synchronous wheel, the elliptical surface of the cam contacts and cooperates with the rolling bearing, and the rolling bearing is installed at one end of the cam push rod, and the cam push rod passes through the moving fixed plate, and the other end of the cam push rod cooperates with the test cavity.

[0008] The synchronous wheel can drive the rotating shaft to rotate under the drive of the servo motor, and the cam swings back and forth with the movement of the rotating shaft, and the cam push rod is driven to move back and forth by the rolling bearing to realize the movement of the test cavity.

[0009] In a preferred embodiment of the present invention, a motor fixing plate is installed on one side of the base platform, and the output end of the servo motor is supported on the motor fixing plate.

[0010] In a preferred embodiment of the present invention, the output end of the servo motor is connected to a reducer, and the reducer is connected to the synchronous wheel through a synchronous belt.

[0011] In a preferred embodiment of the present invention, symmetrically arranged bearing seat support plates are installed on the other side of the base platform, and the two bearing seat support plates are respectively provided with bearing seats for supporting both ends of the rotating shaft.

[0012] In a preferred embodiment of the present invention, the shifting fixed plate is connected to the side end surfaces of the two bearing seat support plates, and a grating scale fixing seat is connected to the shifting fixed plate, and a grating scale is provided on the grating scale fixing seat.

[0013] In a preferred embodiment of the present invention, both sides of the cam are positioned by cam fixing plates, and the rotating shaft passes through the two cam fixing plates.

[0014] In a preferred embodiment of the present invention, a guide sleeve and a spring are sleeved on the cam push rod. The guide sleeve is sleeved at a position where the cam push rod contacts and cooperates with the movable fixed plate, and the spring abuts against the guide sleeve.

[0015] The beneficial effects of the anti-vibration mechanism of the utility model oil seal testing machine are:

[0016] The servo motor and cam mechanism work together to achieve the reciprocating motion of the cam push rod, with high-precision control, providing high-power thrust output, and achieving a high-frequency action rhythm. It is used to simulate the working conditions of rapid movement when the oil seal rotates at high speed, ensuring the accuracy of experimental data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0018] Figure 1 This is a structural diagram of a preferred embodiment of the anti-movement mechanism of the oil seal testing machine of the present utility model;

[0019] The markings of the components in the accompanying drawings are as follows:

[0020] 1. Rotating shaft, 2. Bearing seat, 3. Synchronous wheel, 4. Cam, 5. Cam fixing plate, 6. Reducer, 7. Servo motor, 8. Synchronous belt, 9. Bearing seat support plate, 10. Motor fixing plate, 11. Bottom plate platform, 12. Moving fixing plate, 13. Guide sleeve, 14. Cam lifter, 15. Rolling bearing, 16. Spring, 17. Grating scale, 18. Grating scale fixing seat. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] See also Figure 1 :

[0024] This embodiment provides an anti-movement mechanism of an oil seal testing machine, which is suitable for oil seal pressure testing, and includes: a servo motor 7, a rotating shaft 1, a cam mechanism and a base plate platform 11, wherein the servo motor 7 and the cam mechanism are respectively installed on both sides of the base plate platform 11, and the cam mechanism is installed on the rotating shaft 1.

[0025] Among them, a motor fixing plate 10 is installed on one side of the base platform 11, and the output end of the servo motor 7 is supported on the motor fixing plate 10, providing a stable support platform for the servo motor 7; a symmetrically arranged bearing seat support plate 9 is installed on the other side of the base platform 11, and the two bearing seat support plates 9 are respectively provided with bearing seats 2 for supporting the two ends of the rotating shaft 1, providing stable support for the rotating shaft 1 and ensuring the stability of the cam mechanism action.

[0026] Specifically, the cam mechanism includes: a synchronous wheel 3, a cam 4, a cam follower 14, a rolling bearing 15 and a movable fixed plate 12:

[0027] The rotating shaft 1 passes through the cam 4 and the synchronous wheel 3. The elliptical surface of the cam 4 contacts and cooperates with the rolling bearing 15. The rolling bearing 15 is installed at one end of the cam push rod 14. The cam push rod 14 passes through the movable fixed plate 12. The other end of the cam push rod 14 cooperates with the test cavity.

[0028] In more detail, the cam 4 is positioned on both sides by cam fixing plates 5, and the rotating shaft 1 passes through the two cam fixing plates 5. The cam fixing plates 5 provide precise positioning for the cam 4, which can prevent the cam 4 from moving axially, thereby ensuring the movement accuracy and reliability of the entire cam mechanism.

[0029] Furthermore, the cam follower 14 is sleeved with a guide sleeve 13 and a spring 16. The guide sleeve 13 is sleeved at the position where the cam follower 14 contacts and engages with the movable fixing plate 12, and the spring 16 abuts against the guide sleeve 13. The guide sleeve 13 protects the cam follower and provides precise guidance and positioning for the cam follower 14. The spring 16 prevents the cam follower from sliding or jumping and resets the cam follower after the cam force disappears, ensuring stable reciprocating motion of the cam and cam follower.

[0030] Furthermore, the movable fixed plate 12 is connected to the side end surfaces of the two bearing seat support plates 9, and the movable fixed plate 12 is connected to a grating scale fixing seat 18, on which a grating scale 17 is provided. The grating scale 17 can monitor the reciprocating motion of the cam push rod in real time, and convert the motion data into a digital signal to feed back to the control system, thereby ensuring the stability of the reciprocating motion of the cam push rod.

[0031] Next is the servo motor 7. The output end of the servo motor 7 is connected to a reducer 6, which is connected to the synchronous wheel 3 through a synchronous belt 8. The synchronous wheel 3 can drive the rotating shaft 1 to rotate under the drive of the servo motor 7. The cam 4 swings back and forth with the movement of the rotating shaft 1, and the cam push rod 14 is driven to move back and forth through the rolling bearing 15 to realize the movement of the test cavity.

[0032] The cooperation between the servo motor 7 and the cam mechanism can achieve high-precision control, high-frequency operation and high thrust output:

[0033] The servo motor 7 achieves precise control of position and speed through built-in sensors and controllers, ensuring that the cavity movement working environment is carried out according to predetermined parameters, thereby improving test accuracy and reliability; the servo motor 7 has the ability to respond quickly and run at high speed, which can adapt to the high-frequency movement working condition test requirements and improve test efficiency; the servo motor 7 can meet the demand for large thrust in the cavity movement test, which helps to simulate a more realistic working environment and ensure that the oil seal is subjected to sufficient pressure and friction during the test, thereby more accurately evaluating its performance.

[0034] The anti-vibration mechanism of the oil seal testing machine of this utility model is installed as an independent module on the vibrating side of the test chamber. The whole action process is as follows:

[0035] Start the servo motor 7, which drives the synchronous wheel 3 to rotate through the reducer 6 and the synchronous belt 8, and then drives the rotating shaft 1 to rotate. The rotation of the rotating shaft 1 drives the cam 4 to swing back and forth. The elliptical surface of the cam 4 will periodically change the contact point position with the rolling bearing 15 during the rotation process, thereby driving the cam push rod 14 to reciprocate.

[0036] The reciprocating motion of the cam follower 14 ultimately realizes the movement of the test cavity, and this movement is used to simulate the working condition of rapid movement when the oil seal rotates at high speed.

[0037] The beneficial effects of the anti-vibration mechanism of the utility model oil seal testing machine are:

[0038] Through the cooperation of the servo motor and the cam mechanism, high-precision control is achieved, providing high-power thrust output and achieving a high-frequency action rhythm, ultimately realizing the simulation of the high-frequency movement of the test cavity and ensuring the accuracy of experimental data collection.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anti-vibration mechanism of an oil seal testing machine, characterized in that: include: A servo motor, a rotating shaft, a cam mechanism and a base platform. The servo motor and the cam mechanism are respectively installed on both sides of the base platform. The cam mechanism is installed on the rotating shaft. The cam mechanism includes: a synchronous wheel, a cam, a cam push rod, a rolling bearing and a movable fixed plate. The rotating shaft passes through the cam and the synchronous wheel, the elliptical surface of the cam contacts and cooperates with the rolling bearing, and the rolling bearing is installed at one end of the cam push rod, which passes through the movable fixed plate, and the other end of the cam push rod cooperates with the test cavity. The synchronous wheel can drive the rotating shaft to rotate under the drive of the servo motor, and the cam swings back and forth with the movement of the rotating shaft, and the cam push rod is driven to move back and forth by the rolling bearing to realize the movement of the test cavity.

2. The anti-vibration mechanism of the oil seal testing machine according to claim 1, characterized in that: A motor fixing plate is installed on one side of the base platform, and the output end of the servo motor is supported on the motor fixing plate.

3. The anti-vibration mechanism of the oil seal testing machine according to claim 1, characterized in that: The output end of the servo motor is connected to a reducer, and the reducer is connected to the synchronous wheel through a synchronous belt.

4. The anti-vibration mechanism of the oil seal testing machine according to claim 1, characterized in that: A symmetrically arranged bearing seat support plate is installed on the other side of the base platform, and the two bearing seat support plates are respectively provided with bearing seats for supporting both ends of the rotating shaft.

5. The anti-vibration mechanism of the oil seal testing machine according to claim 4, characterized in that: The movable fixing plate is connected to the side end surfaces of the two bearing seat support plates, and the movable fixing plate is connected to a grating scale fixing seat, on which a grating scale is provided.

6. The anti-vibration mechanism of the oil seal testing machine according to claim 1, characterized in that: The two sides of the cam are positioned by cam fixing plates, and the rotating shaft passes through the two cam fixing plates.

7. The anti-vibration mechanism of the oil seal testing machine according to claim 1, characterized in that: The cam push rod is sleeved with a guide sleeve and a spring. The guide sleeve is sleeved at a position where the cam push rod contacts and cooperates with the movable fixed plate. The spring abuts against the guide sleeve.

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