Dustproof ball bearing type abrasion tester

Abstract

The utility model provides a dustproof ball bearing type wear testing machine relates to mechanical processing technical field, include: fixed frame, the lower end surface fixed mounting of fixed frame has the fender of rectangular plate shape structure, the upper end surface rear position fixed mounting of fixed frame has the hanging board of L type structure, the lower end surface lower end surface middle position fixed mounting of fixed frame has the drive motor. In the utility model, two half circle protection plates are butted together from the front and rear sides of the placing plate, one fixed lug is installed at both ends of the protection plate, the adjacent two fixed lugs are connected through bolts, the two protection plates are spliced into a complete annular protection structure, the test area is closed, powder splashing is prevented, the problem that the testing machine is difficult to accurately control the pressure on the bearing during the test process is solved, and a large amount of metal scraps and dust are generated during the wear test of the ball bearing, thereby affecting the test accuracy.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and in particular to a dustproof ball bearing type wear resistance testing machine. Background Technology

[0002] In modern industry, ball bearings are a key mechanical component widely used in many mechanical equipment, such as various motors, machine tools, automobiles, and aerospace equipment. Their performance directly affects the reliability, service life, and working efficiency of the entire mechanical equipment. Wear resistance is one of the important indicators for measuring the quality of ball bearings, which is directly related to whether the bearing can maintain stable precision, low coefficient of friction, and sufficient load-bearing capacity during long-term operation.

[0003] However, existing bearing wear resistance testing machines still have some shortcomings in testing: First, the testing machine has the problem of low testing accuracy, making it difficult to accurately control key parameters during the testing process, such as the pressure applied to the bearing and the rotation speed. This results in poor accuracy and repeatability of the test results, and it cannot provide accurate data support for the quality assessment and improvement of the bearing. Secondly, during the wear resistance test of ball bearings, a large amount of metal debris and dust will inevitably be generated due to the continuous friction between the bearing and the friction components. Some existing testing equipment lacks a complete dustproof structure, which makes these debris and dust easily spread around the test area, which will not only affect the accuracy of the test, but also pollute the surrounding environment. Utility Model Content

[0004] This utility model relates to a dustproof ball bearing wear resistance testing machine, which solves the problem that the testing machine is difficult to accurately control key parameters during the testing process, such as the pressure applied to the bearing and the rotation speed, as well as the problem that a large amount of metal debris and dust are generated during the wear resistance test of the ball bearing, thus affecting the accuracy of the test.

[0005] This utility model provides a dustproof ball bearing type wear resistance testing machine, specifically including: a fixed frame; A rectangular plate-shaped pad is fixedly installed on the lower end face of the fixed frame, an L-shaped hanging plate is fixedly installed at the rear position of the upper end face of the fixed frame, and a drive motor is fixedly installed at the middle position of the lower end surface of the fixed frame. The placement board is fixedly installed on the end face of the drive shaft of the drive motor. The main body of the placement board is a circular plate structure, and a vertical pole is fixedly installed on the upper end face of the placement board. A grinding plate, the surface of which has through holes, is sleeved on the outside of the upright, and the main body of the grinding plate is a circular plate structure; An electric cylinder is fixedly installed on the upper end face of the hanging plate. A connecting plate is fixedly installed on the end face of the telescopic part at the lower end of the electric cylinder. A connecting rod is fixedly installed on the outer end face of the connecting plate. A ball bearing is sleeved on the outside of the connecting rod. The protective plate has a semi-circular main body and two protective plates are provided at the front and back. A vent pipe is fixedly installed on the outer end face of the rear protective plate. The protective plate is sleeved on the outer end face of the placement plate, and the inner end face of the protective plate is in contact with the outer end face of the placement plate.

[0006] Furthermore, the upper end face of the fixed frame is provided with a circular track groove, and the lower end face of the placement plate is provided with six connecting blocks in a ring shape. The lower end face of the connecting blocks is welded with a limit block, which is slidably engaged in the track groove at the upper end of the fixed frame.

[0007] Furthermore, a fixing ear plate is installed at each of the left and right ends of the protective plate. The surface of the fixing ear plate has two connecting holes, and adjacent fixing ear plates are connected by bolts.

[0008] Furthermore, a cover plate is fitted onto the outer end face of the upright, the cover plate is located on the upper end face of the upright, the surface of the upright is threaded, and a nut is connected to the surface of the upright.

[0009] Furthermore, a pressure sensor is fixedly installed on the upper surface of the placement plate, and the upper end of the pressure sensor is in contact with the grinding plate.

[0010] Furthermore, a controller is fixedly installed on the upper surface of the hanging plate, and the controller is electrically connected to the pressure sensor and the electric cylinder.

[0011] This utility model provides a dustproof ball bearing type wear resistance testing machine, which has the following beneficial effects: 1. The pressure sensor on the lower end of the grinding plate is fully attached to the upper end of the placement plate. The pressure sensor detects the pressure on the grinding plate in real time and converts the pressure data into an electrical signal to feed back to the controller. The controller compares the real-time pressure value with the preset pressure value. If the real-time pressure is insufficient, the controller controls the electric cylinder to continue to extend to compensate for the pressure. If the pressure exceeds the preset value, the controller controls the electric cylinder to retract slightly to relieve the pressure until the pressure on the grinding plate stabilizes at the preset value, thus achieving precise control of the test pressure.

[0012] 2. Two semi-circular protective plates are joined together from the front and rear sides of the placement plate, so that the inner end face of the protective plate is tightly fitted with the outer end face of the placement plate. A fixed ear plate is installed at each end of the protective plate, and two adjacent fixed ear plates are connected by bolts to splice the two protective plates into a complete ring-shaped protective structure, which seals the test area and prevents powder from splashing.

[0013] 3. Six connecting blocks are installed in a ring on the lower end face of the placement plate. Limiting blocks are installed on the lower end face of the connecting blocks. The limiting blocks are slidably engaged in the annular track groove at the upper end of the fixed frame. The track groove guides and limits the limiting blocks, ensuring that the placement plate remains coaxial and stable during high-speed rotation, and avoiding eccentric shaking that affects the test accuracy.

[0014] 4. The annular protective plate encloses the test area of ​​the placement plate, grinding plate and bearing, preventing metal shavings and dust generated during the test from spreading outward. The vent pipe of the rear protective plate is connected to a negative pressure suction device to remove dust from the test area in real time, avoiding dust adhering to the surface of the bearing or grinding plate and affecting the accuracy of the test. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the overall device structure of this utility model is shown; Figure 2 A schematic diagram of the connection structure between the hanging plate and the electric cylinder of this utility model is shown; Figure 3 An exploded view of the fixed frame, placement plate and grinding plate of this utility model is shown. Figure 4 A schematic diagram of the connection structure between the drive motor and the placement plate of this utility model is shown; Figure 5 A schematic diagram of the connection structure of the placement plate, connecting block and limiting block of this utility model is shown; Figure 6 A schematic diagram of the connection structure between the protective plate and the vent pipe of this utility model is shown.

[0018] List of reference numerals in the attached diagram: 1. Fixed frame; 101. Pad; 102. Hanging plate; 103. Track groove; 104. Drive motor; 2. Placement plate; 201. Pressure sensor; 202. Upright pole; 2021. Cover plate; 203. Connecting block; 2031. Limiting block; 3. Grinding plate; 4. Electric cylinder; 401. Connecting plate; 4011. Connecting rod; 5. Protective plate; 501. Vent pipe; 502. Fixed ear plate; 6. Controller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: Please refer to Figures 1 to 6 : This utility model proposes a dustproof ball bearing type wear resistance testing machine, including: a fixed frame 1; A rectangular plate-shaped pad 101 is fixedly installed on the lower end face of the fixed frame 1. The stability of the fixed frame 1 can be improved by setting the pad 101. An L-shaped hanging plate 102 is fixedly installed at the rear position of the upper end face of the fixed frame 1. A drive motor 104 is fixedly installed at the middle position of the lower end surface of the fixed frame 1. The placement plate 2 is fixedly installed on the end face of the drive shaft of the drive motor 104. The main body of the placement plate 2 is a circular plate structure, and the upper end face of the placement plate 2 is fixedly installed with a vertical rod 202. Grinding plate 3, the surface of grinding plate 3 has through holes, grinding plate 3 is sleeved on the outside of upright 202, and the main body of grinding plate 3 is a circular plate structure; Electric cylinder 4 is fixedly installed on the upper end face of the hanging plate 102. A connecting plate 401 is fixedly installed on the end face of the telescopic part at the lower end of the electric cylinder 4. A connecting rod 4011 is fixedly installed on the outer end face of the connecting plate 401. A ball bearing is sleeved on the outside of the connecting rod 4011. The protective plate 5 has a semi-circular structure. There are two protective plates 5, one at the front and one at the back. The outer end face of the rear protective plate 5 is fixedly installed with a vent pipe 501. The protective plate 5 is sleeved on the outer end face of the placement plate 2, and the inner end face of the protective plate 5 is in contact with the outer end face of the placement plate 2.

[0021] The upper end face of the fixed frame 1 is provided with a circular track groove 103, and the lower end face of the placement plate 2 is provided with six connecting blocks 203 in a ring shape. The lower end face of the connecting blocks 203 is welded with a limit block 2031. The limit block 2031 is slidably engaged in the track groove 103 at the upper end of the fixed frame 1. In use, the limit block 2031 is slidably engaged in the annular track groove 103 at the upper end of the fixed frame 1. The track groove 103 guides and limits the limit block 2031, ensuring that the placement plate 2 remains coaxial and stable during high-speed rotation, and avoiding eccentric shaking that affects the test accuracy.

[0022] The protective plate 5 has a fixed ear plate 502 installed at each of its left and right ends. The fixed ear plate 502 has two connecting holes on its surface. The two adjacent fixed ear plates 502 are connected by bolts. In use, the annular protective plate 5 seals the test area of ​​the placement plate 2, the grinding plate 3 and the bearing, preventing metal shavings and dust generated during the test from spreading outward. The vent pipe 501 of the rear protective plate 5 is connected to a negative pressure suction device to remove dust from the test area in real time, so as to avoid dust adhering to the surface of the bearing or the grinding plate 3 and affecting the test accuracy.

[0023] The outer end face of the upright 202 is fitted with a cover plate 2021, which is located on the upper end face of the upright 202. The surface of the upright 202 is threaded, and a nut is connected to the surface of the upright 202.

[0024] A pressure sensor 201 is fixedly installed on the upper surface of the placement plate 2. The upper end of the pressure sensor 201 is in contact with the grinding plate 3. A controller 6 is fixedly installed on the upper surface of the hanging plate 102. The controller 6 is electrically connected to the pressure sensor 201. During use, the pressure sensor 201 detects the pressure on the grinding plate 3 in real time and converts the pressure data into an electrical signal to feed back to the controller 6. The controller 6 compares the real-time pressure value with the preset pressure value. If the real-time pressure is insufficient, it controls the electric cylinder 4 to continue to extend to compensate for the pressure. If the pressure exceeds the preset value, it controls the electric cylinder 4 to retract slightly to relieve the pressure until the pressure on the grinding plate 3 stabilizes at the preset value, thereby achieving precise control of the test pressure.

[0025] Example 2, based on Example 1, such as Figures 1-6 As shown, there are two protective plates 5 at the front and back. The protective plate 5 surrounds the placement plate 2 and the grinding plate 3 in the middle. The outer end face of the rear protective plate 5 is fixedly installed with a vent pipe 501. The vent pipe 501 can be connected to a negative pressure system. When the bearing is tested for wear resistance, the gas inside the protective plate 5 will flow into the vent pipe 501 during the operation of the negative pressure system. The dust generated during the test will enter the vent pipe 501 along with the airflow and be discharged, thus collecting the dust.

[0026] The working principle of this embodiment: In this invention, the inner ring of the ball bearing to be tested is fitted onto the connecting rod 4011 on the outer end face of the connecting plate 401, so that the bearing and the connecting rod 4011 are coaxially fixed, ensuring that the bearing can only rotate freely around the connecting rod 4011 during the test. The nut and cover plate 2021 at the upper end of the upright 202 are removed, and the circular grinding plate 3 is fitted onto the outside of the upright 202, so that the lower end face of the grinding plate 3 is completely in contact with the pressure sensor 201 at the upper end of the placement plate 2. Then, the cover plate 2021 is reset and the nut on the surface of the upright 202 is tightened. The cover plate 2021 applies a preload to the grinding plate 3 to prevent the grinding plate 3 from shifting laterally during the test. Then, the two semicircles... The protective plates 5 are joined together from the front and rear sides of the placement plate 2, so that the inner end face of the protective plate 5 is tightly fitted with the outer end face of the placement plate 2. A fixed ear plate 502 is installed at each end of the protective plate 5. The two adjacent fixed ear plates 502 are connected by bolts to splice the two protective plates 5 into a complete ring protective structure to close the test area. A controller 6 is installed at the upper end of the hanging plate 102. The preset test pressure value is input according to the bearing wear resistance test standard. After the electric cylinder 4 is started, the telescopic part at the lower end extends downward, driving the ball bearings on the connecting plate 401 and the connecting rod 4011 to move down synchronously until the outer ring of the bearing is in complete contact with the upper surface of the grinding plate 3.Electric cylinder 4 extends continuously, applying pressure to grinding plate 3 through bearings. Pressure sensor 201 detects the pressure on grinding plate 3 in real time and converts the pressure data into an electrical signal, which is then fed back to controller 6. Controller 6 compares the real-time pressure value with the preset pressure value. If the real-time pressure is insufficient, it controls electric cylinder 4 to continue extending to compensate for the pressure. If the pressure exceeds the preset value, it controls electric cylinder 4 to retract slightly to relieve pressure until the pressure on grinding plate 3 stabilizes at the preset value, thus achieving precise control of the test pressure. When the pressure reaches the preset stable value, controller 6 sends a start signal to drive motor 104 at the lower end of fixed frame 1. Drive shaft of drive motor 104 drives placement plate 2 to rotate uniformly around its axis. Six connecting blocks 203 are installed in a ring on the lower end face of placement plate 2. Limiting blocks 2031 are installed on the lower end face of connecting blocks 203. Limiting blocks 2031 are slidably locked in the annular track groove 103 at the upper end of fixed frame 1. The limiting block 2031 serves as a guide and limiter, ensuring that the placement plate 2 remains coaxial and stable during high-speed rotation, preventing eccentric wobbling from affecting test accuracy. The placement plate 2 drives the grinding plate 3 to rotate synchronously and uniformly. The outer ring of the ball bearing is in close contact with the upper surface of the grinding plate 3. Under the action of friction, the outer ring of the bearing rotates with the grinding plate 3, while the inner ring of the bearing is mounted on the connecting rod 4011. The balls roll between the inner and outer rings. This process simulates the rolling friction and wear state of the ball bearing under actual working conditions. The wear-resistant material of the grinding plate 3 continuously frictionally tests the outer ring of the bearing and the balls. The annular protective plate 5 seals the test area of ​​the placement plate 2, the grinding plate 3, and the bearing, preventing metal debris and dust generated during the test from spreading outward. The vent pipe 501 of the rear protective plate 5 is connected to a negative pressure suction device to extract dust from the test area in real time, preventing dust from adhering to the surface of the bearing or the grinding plate 3 and affecting the test accuracy.

Claims

1. A dust-protected, ball-bearing type abrasion tester characterized by, Includes: a fixed frame (1), on which a rectangular plate-shaped pad (101) is fixedly installed at the lower end face; an L-shaped hanging plate (102) is fixedly installed at the rear position of the upper end face of the fixed frame (1); and a drive motor (104) is fixedly installed at the middle position of the lower end surface of the fixed frame (1); a placement plate (2), which is fixedly installed at the end face of the drive shaft of the drive motor (104); the main body of the placement plate (2) is a circular plate structure; and a vertical rod (202) is fixedly installed on the upper end face of the placement plate (2); and a grinding plate (3), on which a through hole is opened on the surface; the grinding plate (3) is sleeved on the outside of the vertical rod (202). (3) The main body is a circular plate structure; electric cylinder (4), the electric cylinder (4) is fixedly installed on the upper end face of the hanging plate (102), the lower end of the telescopic part of the electric cylinder (4) is fixedly installed with a connecting plate (401), the outer end face of the connecting plate (401) is fixedly installed with a connecting rod (4011), and the ball bearing is sleeved on the outside of the connecting rod (4011); protective plate (5), the main body of the protective plate (5) is a semi-circular structure, there are two protective plates (5) at the front and back, the outer end face of the rear protective plate (5) is fixedly installed with a vent pipe (501), the protective plate (5) is sleeved on the outer end face of the placement plate (2), and the inner end face of the protective plate (5) is in contact with the outer end face of the placement plate (2).

2. The dustproof ball bearing wear resistance testing machine according to claim 1, characterized in that, The upper end face of the fixed frame (1) is provided with a circular track groove (103), and the lower end face of the placement plate (2) is provided with six connecting blocks (203) in a ring shape. The lower end face of the connecting blocks (203) is welded with a limit block (2031), and the limit block (2031) is slidably locked in the track groove (103) at the upper end of the fixed frame (1).

3. A dust protected, ball bearing type abrasion tester as defined in claim 1 wherein, A fixed ear plate (502) is installed at each of the left and right ends of the protective plate (5). Two connection holes are opened on the surface of the fixed ear plate (502), and the two adjacent fixed ear plates (502) are connected by bolts.

4. The dustproof ball bearing wear resistance testing machine according to claim 1, characterized in that, The outer end face of the upright (202) is fitted with a cover plate (2021), the cover plate (2021) is located on the upper end face of the upright (202), the surface of the upright (202) is threaded, and a nut is connected to the surface of the upright (202).

5. A dust protected, ball bearing type abrasion tester as defined in claim 1 wherein, A pressure sensor (201) is fixedly installed on the upper surface of the placement plate (2), and the upper end of the pressure sensor (201) is in contact with the grinding plate (3).

6. A dust protected, ball bearing type abrasion tester as defined in claim 1 wherein, A controller (6) is fixedly installed on the upper surface of the hanging plate (102). The controller (6) is electrically connected to the pressure sensor (201) and to the electric cylinder (4).

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