Air tightness detection device for motor bearing

Abstract

The invention provides an air tightness detection device for a motor bearing, and belongs to the technical field of machinery. The motor bearing solves the problem that impurities easily enter an existing motor bearing, internal abrasion is caused, and use is affected. According to the air tightness detection device of the motor bearing, the motor bearing comprises an outer ring, an inner ring, a ball body, a retainer and two sealing plates installed between the outer ring and the inner ring, the air tightness detection device comprises a detection cabinet with a working table top, and a tool assembly for positioning and assembling the motor bearing is installed at the top of the working table top. A three-axis linkage assembly is arranged on the detection cabinet and located above the tool assembly, and an air inlet tool for ventilating a motor bearing in the tool assembly is installed on the three-axis linkage assembly. The sealing device has the advantages of being good in sealing effect and improving the using effect.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a device for detecting the air tightness of a motor bearing. Background Art

[0002] Motor bearings generally include an outer ring, an inner ring, and balls. However, current motor bearings are easily exposed to impurities during operation due to environmental influences. Long-term contact between impurities and balls causes wear of the balls, affecting the use of the bearings. Therefore, dustproof sealing plates are set on both sides of existing motor bearings. However, the dustproof sealing plates currently lack sealing inspection before leaving the factory, resulting in the inability to guarantee the sealing performance of the motor bearings after leaving the factory. Summary of the invention

[0003] The purpose of the present invention is to provide a detection device for detecting the air tightness of motor bearings in view of the above-mentioned problems existing in the prior art.

[0004] The purpose of the present invention can be achieved through the following technical solutions: a gas-tightness detection device for a motor bearing, the motor bearing comprising an outer ring, an inner ring, a sphere, a retaining frame and two sealing plates installed between the outer ring and the inner ring, and the two sealing plates are respectively installed on both sides of the motor bearing, the inner end of the sealing plate extends to between the outer ring and the inner ring to form an extension portion, and a sealing ring is arranged between the sealing plate and the outer ring and the inner ring. It is characterized in that the gas-tightness detection device comprises a detection cabinet with a work surface, a tooling assembly for positioning and assembling the motor bearing is installed on the top of the work surface, a three-axis linkage assembly is provided on the detection cabinet and above the tooling assembly, and an air intake tool for ventilating the motor bearing in the tooling assembly is installed on the three-axis linkage assembly.

[0005] In the above-mentioned device for detecting the air tightness of a motor bearing, a sealing groove for installing a sealing ring is provided on the sealing plate.

[0006] In the above-mentioned air-tightness detection device for a motor bearing, the sealing ring is made of chloroprene rubber.

[0007] In the above-mentioned device for detecting the air tightness of a motor bearing, the longitudinal section of the sealing ring is an oblate structure.

[0008] In the above-mentioned device for detecting the air tightness of a motor bearing, a chamfer is provided between the sealing plate and the extension portion.

[0009] In the above-mentioned air tightness detection device for a motor bearing, the tooling assembly includes an upper tooling and a lower tooling for bearing interlayer assembly, the lower tooling is fixed on the work table, and the detection cabinet is provided with a loading and unloading assembly for adsorbing the upper tooling, the upper tooling and the lower tooling are both sealed and covered on the outside of the motor bearing, and sealing members are provided between the upper tooling and the motor bearing and between the lower tooling and the motor bearing, two air inlet holes are provided in the upper tooling, and are respectively located near the position between the outer ring and the sealing plate and near the position between the inner ring and the sealing plate, two ventilation grooves are provided in an annular shape on the bottom of the upper tooling, and are respectively located between the outer ring and the sealing plate and between the inner ring and the sealing plate, the two ventilation grooves are respectively connected with the corresponding air inlet holes, two air outlet holes connected with the air inlet holes are provided on the peripheral wall of the upper tooling, and air path one-way valves are provided in the air outlet holes, and air pressure sensors are installed in the air inlet holes and the air outlet holes.

[0010] In the above-mentioned air tightness detection device for a motor bearing, the three-axis linkage assembly includes a lifting plate, a front-and-rear moving plate and a left-and-right moving plate, the air intake device is installed on the left-and-right moving plate, and the air intake device is an air intake pipe for gas to pass through, and the end of the air intake pipe has an air outlet nozzle, the lifting plate is lifted and moved along the detection cabinet, and the lifting plate is L-shaped, the front-and-rear moving plate moves back and forth along the top of the lifting plate, and the left-and-right moving plate moves back and forth along the front-and-rear moving plate, and the three-axis linkage assembly also includes three drive motors that respectively control the movement of the lifting plate, the front-and-rear moving plate and the left-and-right moving plate.

[0011] In the above-mentioned air tightness detection device for motor bearings, the loading and unloading component includes a mounting plate installed on the work surface, a lifting platform with lifting motion is arranged in front of the mounting plate, and a suction cup for adsorbing the tooling is arranged at the bottom of the lifting platform.

[0012] In the above-mentioned air tightness detection device for motor bearings, an air pump with an air inlet end and an air outlet end is provided in the detection cabinet, the air outlet end is connected to the air inlet pipe through air pipe 1, the air inlet end is connected to the three-way valve through air pipe 2, and the three-way valve is externally connected to two air pipes 3 respectively connected to the air outlet holes.

[0013] Compared with the prior art, the air-tightness detection device for the motor bearing has the advantages of improving the sealing of the bearing itself and preventing the entry of foreign matter, and improves the use effect of high sealing by detecting the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the bearing sealing structure of this motor.

[0015] Figure 2It is a cross-sectional view of the tooling assembly in the motor bearing sealing structure.

[0016] Figure 3 It is the structural diagram of the upper tooling.

[0017] Figure 4 yes Figure 3 Sectional view of AA.

[0018] In the figure, 1. outer ring; 2. inner ring; 3. sphere; 4. retaining frame; 5. sealing plate; 6. extension part; 7. sealing ring; 8. inspection cabinet; 9. work surface; 10. air inlet duct; 11. upper tooling; 12. lower tooling; 13. sealing member; 14. air inlet hole; 15. ventilation groove; 16. air path one-way valve; 17. lifting plate; 18. front and rear moving plate; 19. left and right moving plate; 20. air outlet nozzle; 21. driving motor; 22. mounting plate; 23. lifting platform; 24. suction cup; 25. air pump; 26. air pipe one; 27. air pipe two; 28. air pipe three; 29. ​​air outlet. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the air tightness detection device of the motor bearing comprises an outer ring 1, an inner ring 2, a ball 3, a retaining frame 4 and two sealing plates 5 installed between the outer ring 1 and the inner ring 2, and the two sealing plates 5 are installed on both sides of the motor bearing respectively, the inner end of the sealing plate 5 extends to between the outer ring 1 and the inner ring 2 to form an extension part 6, and a sealing ring 7 is arranged between the sealing plate 5 and the outer ring 1 and the inner ring 2.

[0021] Preferably, a sealing groove for installing the sealing ring 7 is provided on the sealing plate 5 .

[0022] Preferably, the sealing ring 7 is made of chloroprene rubber.

[0023] The longitudinal section of the sealing ring 7 is an oblate structure, which provides good axial sealing support and increases the sealing contact surface.

[0024] Preferably, a chamfer is provided between the sealing plate 5 and the extending portion 6 .

[0025] Preferably, the airtightness detection device includes a detection cabinet 8 with a work surface 9, a tooling assembly for positioning and assembling the motor bearings is installed on the top of the work surface 9, a three-axis linkage assembly is provided on the detection cabinet 8 and above the tooling assembly, and an air intake device for ventilating the motor bearings in the tooling assembly is installed on the three-axis linkage assembly.

[0026] To be more specific, the tooling assembly includes an upper tooling 11 and a lower tooling 12 for bearing interlayer assembly, the lower tooling 12 is fixed on the work surface 9, and the detection cabinet 8 is provided with a loading and unloading assembly for adsorbing the upper tooling 11, the upper tooling 11 and the lower tooling 12 are both sealed and covered on the outside of the motor bearing, and a seal 13 is provided between the upper tooling 11 and the motor bearing and between the lower tooling 12 and the motor bearing. Specifically, a seal 13 is provided between the two toolings and the outer ring 1 and the inner ring 2, and two air inlet holes 14 are opened in the upper tooling 11, and are respectively located near the position between the outer ring 1 and the sealing plate 5 and near the inner ring 2. The position between the ring 2 and the sealing plate 5 is used to detect the air tightness between the sealing plate 5 and the outer ring 1 and the inner ring 2 respectively. Two ventilation grooves 15 are opened in an annular shape on the bottom of the upper tooling 11, and are respectively located between the outer ring 1 and the sealing plate 5 and between the inner ring 2 and the sealing plate 5, so that the ventilation grooves 15 are connected with the two rings and the sealing plate 5, and the two ventilation grooves 15 are connected with the corresponding air inlet holes 14 respectively. Two air outlet holes 29 connected with the air inlet hole 14 are opened on the peripheral wall of the upper tooling 11, and the air outlet holes 29 are equipped with air circuit one-way valves 16, and air pressure sensors are installed in the air inlet hole 14 and the air outlet holes 29.

[0027] Use an air intake tool to ventilate the air inlet 14. After the gas enters the annular ventilation groove 15, it is exhausted through the air outlet 29. After detecting the pressure values ​​in the air inlet 14 and the air outlet 29 and forming pressure difference data, the data is compared. If the pressure difference value is within the positive and negative range of the standard value, it means that the bearing and the sealing performance of the bearing are stable.

[0028] To further elaborate, the three-axis linkage assembly includes a lifting plate 17, a front and rear movable plate 18 and a left and right movable plate 19, the air intake device is installed on the left and right movable plate 19, and the air intake device is an air intake pipe 10 for gas to pass through, and the end of the air intake pipe 10 has an air outlet nozzle 20, the lifting plate 17 is lifted and moved along the detection cabinet 8, and the lifting plate 17 is L-shaped, the front and rear movable plate 18 moves back and forth along the top of the lifting plate 17, and the left and right movable plate 19 moves back and forth along the front and rear movable plate 18. The three-axis linkage assembly also includes three driving motors 21 that respectively control the movement of the lifting plate 17, the front and rear movable plate 18 and the left and right movable plate 19. The position of the air intake device is controlled by the movement of the three plates. When working, it directly enters the air inlet hole 14 for ventilation, and a rubber ring is set at the air nozzle position of the air intake device to play a sealing role.

[0029] To further elaborate, the loading and unloading assembly includes a mounting plate 22 installed on the work surface 9, a lifting platform 23 with lifting motion is arranged in front of the mounting plate 22, a suction cup 24 for adsorbing the upper tooling 11 is arranged at the bottom of the lifting platform 23, and the lifting platform 23 is used to adsorb the upper tooling 11. When work is needed, the lifting platform 23 is lowered to cover and install it on the motor bearing.

[0030] Preferably, an air pump 25 with an air inlet end and an air outlet end is provided in the detection cabinet 8, the air outlet end is connected to the air inlet device pipe through air pipe 1 26, the air inlet end is connected to the three-way valve through air pipe 2 27, and the three-way valve is externally connected to two air pipes 3 28 respectively connected to the air outlet 29.

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0032] Although the terminology such as outer ring 1, inner ring 2, sphere 3, retainer 4, sealing plate 5, extension 6, sealing ring 7, detection cabinet 8, work table 9, air inlet duct 10, upper tooling 11, lower tooling 12, sealing member 13, air inlet hole 14, venting groove 15, air path check valve 16, lifting plate 17, front and rear moving plate 18, left and right moving plate 19, air outlet nozzle 20, driving motor 21, mounting plate 22, lifting platform 23, suction cup 24, air pump 25, air pipe 1 26, air pipe 2 27, air pipe 3 28, air outlet 29 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A device for detecting the air tightness of a motor bearing, the motor bearing comprising an outer ring (1), an inner ring (2), a ball (3), a retainer (4), and two sealing plates (5) installed between the outer ring (1) and the inner ring (2), wherein the two sealing plates (5) are installed on both sides of the motor bearing, respectively, the inner ends of the sealing plates (5) extend between the outer ring (1) and the inner ring (2) to form an extension portion (6), and a sealing ring (7) is provided between the sealing plate (5) and the outer ring (1) and the inner ring (2), characterized in that: The airtightness detection device comprises a detection cabinet (8) with a work surface (9), a tooling assembly for positioning and assembling a motor bearing is installed on the top of the work surface (9), a three-axis linkage assembly is provided on the detection cabinet (8) and above the tooling assembly, and an air intake tool for ventilating the motor bearing in the tooling assembly is installed on the three-axis linkage assembly.

2. The air tightness detection device for a motor bearing according to claim 1, characterized in that: The sealing plate (5) is provided with a sealing groove for installing the sealing ring (7).

3. The air tightness detection device for a motor bearing according to claim 1, characterized in that: The sealing ring (7) is made of chloroprene rubber.

4. The air tightness detection device for a motor bearing according to claim 1, characterized in that: The sealing ring (7) has a flat circular structure in its longitudinal section.

5. The air tightness detection device for a motor bearing according to claim 1, characterized in that: A chamfer is provided between the sealing plate (5) and the extension portion (6).

6. The air tightness detection device for a motor bearing according to claim 1, characterized in that: The tooling assembly comprises an upper tooling (11) and a lower tooling (12) for bearing interlayer assembly, the lower tooling (12) being fixed on a work surface (9), and a loading and unloading assembly for adsorbing the upper tooling (11) being provided on the inspection cabinet (8), the upper tooling (11) and the lower tooling (12) being both sealed and covered on the outside of the motor bearing, a sealing member (13) being provided between the upper tooling (11) and the motor bearing and between the lower tooling (12) and the motor bearing, and two air inlet holes (14) being provided in the upper tooling (11) and being respectively located near a position between the outer ring (1) and the sealing plate (5). At a position close to the inner ring (2) and the sealing plate (5), the bottom of the upper tooling (11) is provided with two ventilation grooves (15) in an annular shape, and are respectively located between the outer ring (1) and the sealing plate (5) and between the inner ring (2) and the sealing plate (5), the two ventilation grooves (15) are respectively connected to the corresponding air inlet holes (14), and the peripheral wall of the upper tooling (11) is provided with two air outlet holes (29) connected to the air inlet holes (14), and the air outlet holes (29) are each provided with an air circuit check valve (16), and the air inlet holes (14) and the air outlet holes (29) are each provided with an air pressure sensor.

7. The air tightness detection device for a motor bearing according to claim 1, characterized in that: The three-axis linkage assembly comprises a lifting plate (17), a front-and-rear moving plate (18) and a left-and-right moving plate (19); the air intake tool is mounted on the left-and-right moving plate (19); the air intake tool is an air intake pipe (10) for gas to pass through; the end of the air intake pipe (10) has an air outlet nozzle (20); the lifting plate (17) moves up and down along the detection cabinet (8); the lifting plate (17) is L-shaped; the front-and-rear moving plate (18) moves forward and backward along the top of the lifting plate (17); the left-and-right moving plate (19) moves forward and backward along the front-and-rear moving plate (18); and the three-axis linkage assembly further comprises three driving motors (21) for respectively controlling the movement of the lifting plate (17), the front-and-rear moving plate (18) and the left-and-right moving plate (19).

8. The air tightness detection device for a motor bearing according to claim 6, characterized in that: The loading and unloading assembly comprises a mounting plate (22) mounted on a work surface (9), a lifting platform (23) that can be lifted and lowered is arranged at the front of the mounting plate (22), and a suction cup (24) for adsorbing the tooling (11) is arranged at the bottom of the lifting platform (23).

9. The device for detecting the air tightness of a motor bearing according to claim 6, characterized in that: The detection cabinet (8) is provided with an air pump (25) with an air inlet end and an air outlet end, the air outlet end is connected to an air inlet pipe via an air pipe 1 (26), the air inlet end is connected to a three-way valve via an air pipe 2 (27), and the three-way valve is externally connected to two air pipes 3 (28) which are respectively connected to the air outlet holes (29).

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