A motor housing hardness testing device and a testing method thereof

Abstract

The application relates to the technical field of motor shell testing, in particular to a motor shell hardness testing device and a testing method thereof. A fixed support frame is fixed to the bottom of the inner wall of a shell body. A sealing feeding mechanism is arranged between the sliding frame and the fixed support frame. The sealing feeding mechanism is used for feeding the motor shell into the interior of the shell body for hardness testing. The sealing feeding mechanism is used for keeping the interior of the shell body in a sealed state before and after feeding. A refrigerator is fixed to the top of the inner wall of the shell body. A pressure detection mechanism is arranged on the top of the inner wall of the shell body and is used for detecting the hardness of the motor shell. The sealing feeding mechanism is arranged, the interior of the shell body can be kept in a low-temperature state, the operator can detect the hardness of the motor shell in the low-temperature state in the interior of the shell body, and the hardness of the motor shell is detected by detecting the deformation degree of the motor shell.

Description

Technical Field

[0001] This invention relates to the field of motor housing testing, and more particularly to a motor housing hardness testing device and testing method. Background Technology

[0002] The motor housing is an essential part in the motor manufacturing process. During the use of the finished motor, since the motor is often used in an environment full of various mechanical parts, there may be various collisions and scratches in the environment where the motor is used. In order to extend the service life of the motor, it is necessary to conduct hardness tests on the finished motor housing to ensure the quality of motor production.

[0003] In the existing technology, due to the diverse operating environments of motors, some motor products need to be used in low-temperature environments. However, the motor housing is prone to brittleness in low-temperature environments, which makes the motor easily break due to compression during use, thus affecting the service life of the motor. Therefore, during the processing of motor housings, it is necessary to test the hardness of the motor housing in a specific environment to screen out motor housings that are easily broken by compression in low-temperature environments. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device and method for testing the hardness of motor housings.

[0005] In a first aspect, the present invention provides a motor housing hardness testing device, comprising a housing and a sliding frame. A third opening is provided through the side wall of the housing facing the sliding frame. A first groove is provided at the bottom of the housing. The lower end of the sliding frame is slidably connected to the inside of the first groove. A cylinder is fixedly installed inside the first groove. The output shaft of the cylinder extends through the side wall of the housing and is fixedly connected to the sliding frame. A controller is fixed on the inner wall of the first groove.

[0006] A fixed support frame is fixed to the bottom of the inner wall of the housing. A sealing feeding mechanism is installed between the sliding frame and the fixed support frame. The sealing feeding mechanism is used to send the motor housing into the interior of the housing for hardness testing. The sealing feeding mechanism is used to keep the interior of the housing sealed before and after feeding.

[0007] A cooler is fixed to the top of the inner wall of the housing, and a pressure detection mechanism is installed on the top of the inner wall of the housing. The pressure detection mechanism is used to detect the hardness of the motor housing.

[0008] The pressure testing mechanism applies a set pressure value to the motor housing, thereby detecting the hardness of the motor housing by measuring the degree of deformation. When the pressure applied to the motor housing reaches the predetermined value, the pressure testing mechanism obtains the pressure compliance information. Subsequently, the controller controls the sealing and feeding mechanism to start after a specified time, driving the motor housing to rotate by a specified angle for the next position detection. After the sealing and feeding mechanism drives the motor housing to complete a full rotation of the detection, it obtains complete detection information. Then, the controller controls the cylinder to start and reset, and the cylinder drives the sliding frame and the sealing and feeding mechanism to move, thereby moving the motor housing through the third opening and moving it out, completing the hardness detection of the motor housing. During the hardness detection process of the motor housing by the pressure testing mechanism, if the hardness is found to be substandard, the controller controls the cylinder to move the motor housing through the third opening and move it out, ending the hardness detection of the motor housing.

[0009] Preferably, the pressure detection mechanism includes a hydraulic rod and a laser receiver. A lifting platform is fixed to the bottom of the telescopic rod of the hydraulic rod. A pressure sensor is fixed to the bottom of the lifting platform. A squeezing block is fixed to the bottom of the pressure sensor. A laser lamp is fixed to the side of the lifting platform facing away from the third opening. The laser receiver is fixed to the inner wall of the housing opposite to the third opening. The laser lamp is compatible with the laser receiver.

[0010] The controller activates the hydraulic rod, which then pushes the lifting platform downwards via its telescopic end. The lifting platform moves the pressure sensor and laser lamp downwards, which in turn moves the extrusion block downwards, pressing against the motor housing. The pressure sensor detects this pressure, and when it reaches a predetermined value, it activates the laser lamp, which emits a beam of light. A laser receiver receives this beam and records the laser lamp's position, thus recording the positional changes of the extrusion block during the hardness test of the motor housing. This allows for the detection of the motor housing's deformation, which in turn reflects its hardness. The hydraulic rod then resets within a specified time after the pressure reaches the predetermined value, completing the testing process.

[0011] Preferably, the sealing feeding mechanism includes a mounting frame and a sealing mechanism. The mounting frame is fixed to the side of the sliding frame facing the housing. An arc-shaped frame is fixed to the top of the mounting frame. A rotating cylinder is rotatably sleeved on the outer ring of the arc-shaped frame. A rotating frame is fixed to the inner ring of the rotating cylinder. A first inner groove is opened at the end of the rotating frame facing the fixed support frame. The first inner groove is inserted and matched with the fixed support frame. A motor is fixed to the top of the mounting frame. The output shaft of the motor is coaxially fixedly connected to the rotating frame. A positioning mechanism is installed between the rotating frame and the fixed support frame. The positioning mechanism is used to position the motor housing. The sealing mechanism is installed between the rotating cylinder and the fixed support frame. The sealing mechanism is used to provide heat insulation and sealing for the third opening.

[0012] The operator places the motor housing onto the outside of the positioning mechanism. The sliding frame then moves the mounting frame, the arc-shaped frame, the rotating cylinder, and the rotating frame. The rotating frame then drives the positioning mechanism and the motor housing through the third opening into the interior of the housing, completing the loading of the motor housing. After the rotating frame moves to a position where it engages with the fixed support frame through the first inner groove, the fixed support frame supports the positioning mechanism to fix the motor housing. The fixed support frame also assists the rotating frame in supporting the motor housing, facilitating the pressure testing mechanism's hardness testing of the motor housing. The motor can be started, causing the rotating frame and rotating cylinder to rotate. The rotating cylinder is supported by the arc-shaped frame, and the rotating frame, through the positioning mechanism, drives the motor housing to rotate at a certain angle, allowing for testing of other positions on the motor housing. This comprehensive hardness testing of the motor housing is beneficial for detecting various positions within the motor housing.

[0013] Preferably, the positioning mechanism includes multiple sets of first springs and multiple first openings. Each set of first springs is fixed to the outer wall of the rotating frame in a circumferential array. Two first springs form a group. The end of the first springs in the same group facing away from the rotating frame is fixed with a support plate. All the support plates are fixed with an arc-shaped push plate on the side facing the rotating frame. All of them drive the first openings to be opened through the outer wall of the rotating frame in a circumferential array. A temperature sensor is fixedly embedded on the side of one of the support plates facing away from the rotating frame.

[0014] Preferably, the sealing mechanism includes a second groove and an annular plate. The second groove is formed on the outer wall of the fixed support frame. Multiple flipping rods are rotatably mounted in a circular array inside the second groove. The outer wall of the rotating shaft of all the flipping rods is fitted with a torsion spring. The two ends of the torsion springs are respectively fixedly connected to the adjacent flipping rods and the inner wall of the second groove. The outer ring of all the flipping rods is fixed with a heat insulation cloth. The annular plate is fixed to the end of the outer wall of the rotating cylinder facing the sliding frame. A second spring is fixed to the side of the annular plate facing the sliding frame. A heat insulation plate is fixed to the end of the second spring facing the sliding frame.

[0015] Preferably, the fixed support frame has a second inner groove inside, and a round rod matching the second inner groove is fixed inside the first inner groove. The inner wall of the second inner groove has several second openings arranged in a circumferential array. A sliding block is slidably inserted inside all the second openings. A first wavy groove is opened on the side of all the sliding blocks facing the inside of the second inner groove. A second wavy groove is opened on the outer wall of the round rod. The second wavy groove is adapted to the first wavy groove. A camera is fixed at the bottom of the inner wall of the housing. The camera is located directly below the fixed support frame.

[0016] Preferably, two rotating rods are symmetrically and rotatably mounted on the inner wall of the housing. The rotating rods are located on both sides directly below the extrusion block. Soft brushes are fixed to the outside of both rotating rods. The ends of both rotating rods facing the sliding frame extend through the housing. An annular groove is formed on the side wall of the heat insulation plate facing the rotating rod, and the annular groove is adapted to the rotating rod.

[0017] Secondly, a testing method for a motor housing hardness testing device is provided, the testing method comprising the following steps:

[0018] Step 1: Obtain the first request information, which is generated by the sealing and feeding mechanism after obtaining the cooling information;

[0019] Step 2: Generate first control information, which is used to control the start of the pressure detection mechanism;

[0020] Step 3: Send the first control information to the pressure detection mechanism to control the pressure detection mechanism to start applying pressure;

[0021] Step 4: Obtain the second request information, which is generated by the pressure testing agency after detecting that the pressure meets the standard.

[0022] Step 5: Generate the second and third control information;

[0023] Step 6: Send the second control information to the pressure detection mechanism to control the pressure detection mechanism to start detecting deformation, and send the third control information to the sealing feeding mechanism to control the sealing feeding mechanism to start after a set time;

[0024] Step 7: Obtain the third request information, which is generated by the sealing and feeding mechanism after obtaining the rotation information;

[0025] Step 8: Generate fourth control information, which is used to control the start of the pressure detection mechanism;

[0026] Step 9: Send the fourth control information to the pressure detection mechanism to control the pressure detection mechanism to start applying pressure;

[0027] Step 10: Obtain the fourth request information, which is generated by the sealing and feeding mechanism after obtaining complete detection information;

[0028] Step 11: Generate the fifth control information, which is used to control the cylinder start-up and reset.

[0029] Step 12: Send the fifth control information to the cylinder to control the cylinder to start and reset;

[0030] In this process, after the motor housing enters the interior of the housing, the temperature of the motor housing cools down to the set temperature in the low-temperature environment inside the housing. The sealing and feeding mechanism obtains the cooling information through a temperature sensor. When the pressure detection mechanism starts to perform pressure detection on the motor housing, the pressure detection mechanism obtains the pressure compliance information when the detection pressure on the motor housing reaches the set pressure value. When the sealing and feeding mechanism drives the motor housing to rotate a full circle to complete the full circle hardness test of the motor housing, the sealing and feeding mechanism obtains complete detection information. The second control information is used to control the sealing and feeding mechanism to start after a specified time. Within the specified time, the pressure detection mechanism completes one detection and reset process of the motor housing.

[0031] Preferred options also include:

[0032] A1. Obtain the fifth request information, which is generated by the pressure testing agency after obtaining information that the hardness does not meet the standard;

[0033] A2. Generate sixth control information, which is used to control the start and reset of the sealing feeding mechanism;

[0034] A3. Send the sixth control information to the cylinder to control the cylinder to start and reset;

[0035] During the hardness test of the motor housing by the pressure testing mechanism, if the pressure testing mechanism detects that the deformation of the motor housing exceeds the predetermined value due to the compression of the motor housing at the set pressure value, the pressure testing mechanism obtains information that the hardness does not meet the standard. At this time, the information that the hardness does not meet the standard generates a fourth request information and sends the fourth request information to the controller to request the controller to control the sealing feeding mechanism to start and reset, thereby moving the motor housing out of the unloading process and ending the test.

[0036] Preferably, the specific control method of the pressure detection mechanism includes the following steps:

[0037] S1. Obtain the first or fourth control information, and the pressure detection mechanism starts applying pressure;

[0038] S2. Obtain information on whether the pressure target has been met;

[0039] S3. Generate the second request information;

[0040] S4. Send the second request information to the controller;

[0041] S5. Obtain the second control information, and the pressure detection mechanism starts detecting deformation.

[0042] S6. Obtain information on whether the hardness meets the standard or not. Information on whether the hardness meets the standard is generated by the pressure testing agency after detecting that the hardness of the motor housing meets the standard. Information on whether the hardness does not meet the standard is generated by the pressure testing agency after detecting that the hardness of the motor housing does not meet the standard.

[0043] S7. If the hardness meets the standard, generate the test result information; if the hardness does not meet the standard, generate the fifth request information.

[0044] S8. Send the detection result information or the fifth request information to the controller;

[0045] Specifically, when the pressure testing mechanism detects that the deformation of the motor housing caused by the pressure testing mechanism on the motor housing is within the predetermined range when the pressure value is set, the pressure testing mechanism obtains the hardness standard information, generates the test result information, and then sends the test result information to the controller, so that the controller receives the test result information and performs statistics on the data.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. This invention, through the setting of a sealed feeding mechanism, ensures that the third opening is sealed before and after feeding, thereby maintaining a low temperature inside the housing. This facilitates the operator in performing hardness testing of the motor housing at low temperatures inside the housing. After the cylinder drives the motor housing into the housing to complete the feeding process, the sealed feeding mechanism detects the temperature of the motor housing. Once the temperature of the motor housing drops to the set temperature, the sealed feeding mechanism obtains the cooling information through a temperature sensor. Subsequently, the controller activates the pressure detection mechanism, which applies a set pressure value to the motor housing and detects the hardness of the motor housing by measuring the degree of deformation.

[0048] 2. This invention, through the arrangement of the second and first wavy grooves, ensures that when the rotating frame drives the round rod to rotate, the round rod drives the second wavy groove to rotate. During the rotation of the second wavy groove, it pushes the first wavy groove, thereby causing the sliding block to vibrate inside the second opening. During the vibration of the sliding block, the arc-shaped push plate can be driven to vibrate as it passes through the sliding block along with the rotating frame. This, in turn, causes the motor housing to vibrate through the support plate. If the motor housing breaks during the hardness test, the fragments fall downwards under the vibration. The falling fragments are captured by the camera. After the camera captures the fragments, it controls the cylinder to start through the controller, causing the motor housing to move out of the housing and end the hardness test, thereby improving the accuracy of the hardness test of the motor housing.

[0049] 3. The present invention uses a soft brush to clean the bottom of the extrusion block during rotation. This helps to prevent fragments from the motor housing from adhering to the bottom of the extrusion block during the inspection process. This would make the motor housing more prone to breakage during the next inspection due to the fragments, thus affecting the accuracy of the motor housing inspection. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the testing method of the present invention.

[0051] Figure 2 This is a schematic diagram of the overall structure of the testing device of the present invention.

[0052] Figure 3 This is a schematic diagram of the overall cross-section of the testing device of the present invention.

[0053] Figure 4 For the present invention Figure 3 A magnified structural diagram of point A in the middle.

[0054] Figure 5 For the present invention Figure 3 A magnified structural diagram at point B in the middle.

[0055] Figure 6 This is a schematic diagram showing a further cross-section of the overall structure of the testing device of the present invention.

[0056] Figure 7 For the present invention Figure 6 A magnified structural diagram at point C.

[0057] Figure 8 This is a schematic diagram of the installation structure of the support plate of the present invention.

[0058] Figure 9 This is a cross-sectional structural diagram of the fixed support frame of the present invention.

[0059] Figure 10 For the present invention Figure 9 A magnified structural diagram at point D.

[0060] Figure 11 This is a further schematic diagram of the testing method of the present invention.

[0061] Figure 12 This is a schematic diagram of the specific control method of the pressure detection mechanism of the present invention.

[0062] In the diagram: 1. Housing; 2. Sliding frame; 3. First groove; 4. Cylinder; 5. Mounting frame; 6. Motor; 7. Arc-shaped frame; 8. Rotating cylinder; 9. Rotating frame; 10. First inner groove; 11. Fixed support frame; 12. Second inner groove; 13. First spring; 14. Support plate; 15. Arc-shaped push plate; 16. First opening; 17. Hydraulic rod; 18. Lifting platform; 19. Pressure sensor; 20. Extrusion block; 21. Laser light; 22. 23. Laser receiver; 24. Cooler; 25. Annular plate; 26. Second spring; 27. Heat insulation plate; 28. Second groove; 29. ​​Flipping rod; 30. Torsion spring; 31. Heat insulation cloth; 32. Rotating rod; 33. Soft brush; 34. Annular groove; 35. Camera; 36. Second opening; 37. Sliding block; 38. First wavy groove; 39. Second wavy groove; 40. Third opening; 41. Controller; 42. Temperature sensor. Detailed Implementation

[0063] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0064] like Figures 2 to 10The device for testing the hardness of a motor housing shown includes a housing 1 and a sliding frame 2. A third opening 39 is provided through the side wall of the housing 1 facing the sliding frame 2. A first groove 3 is provided at the bottom of the housing 1. The lower end of the sliding frame 2 is slidably connected to the inside of the first groove 3. A cylinder 4 is fixedly installed inside the first groove 3. The output shaft of the cylinder 4 extends out through the side wall of the housing 1 and is fixedly connected to the sliding frame 2. A controller 40 is fixed on the inner wall of the first groove 3.

[0065] A fixed support frame 11 is fixed to the bottom of the inner wall of the housing 1. A sealing feeding mechanism is installed between the sliding frame 2 and the fixed support frame 11. The sealing feeding mechanism is used to send the motor housing into the interior of the housing 1 for hardness testing. The sealing feeding mechanism is used to keep the interior of the housing 1 sealed before and after feeding.

[0066] A cooler 23 is fixed to the top of the inner wall of the housing 1, and a pressure detection mechanism is installed on the top of the inner wall of the housing 1. The pressure detection mechanism is used to detect the hardness of the motor housing. In the prior art, due to the diverse operating environments of motors, some motor products need to be used in low-temperature environments. The motor housing is prone to embrittlement in low-temperature environments, making the motor susceptible to breakage due to compression during use, thus affecting the motor's service life. Therefore, during the processing of the motor housing, it is necessary to perform hardness testing on the motor housing in a specific environment to screen out motor housings that are easily broken under pressure in low-temperature environments. This embodiment of the present invention can solve the above problems. The specific implementation is as follows: the cooler 23 can detect the hardness of the housing 1... The internal sealing and cooling process involves the operator placing the motor housing to be tested onto the sealing feeding mechanism. The operator then activates cylinder 4, which moves the sliding frame 2 via a telescopic rod. The sliding frame 2 moves the sealing feeding mechanism, causing the motor housing to pass through the third opening 39 and enter the interior of housing 1. When the operator places the motor housing, the third opening 39 is sealed. During the movement of the motor housing through the third opening 39 by cylinder 4, the third opening 39 is pushed open by the motor housing. After the motor housing passes through the third opening 39, the third opening 39 is sealed, thus ensuring that the third opening 39 remains sealed before and after feeding. This allows the interior of housing 1 to maintain a low temperature, facilitating the operator's ability to perform hardness testing of the motor housing within housing 1 at low temperatures. After cylinder 4 drives the motor housing into housing 1 to complete the loading process, the sealing loading mechanism monitors the temperature of the motor housing. Once the motor housing temperature drops to the set temperature, the sealing loading mechanism acquires cooling information via temperature sensor 41. Subsequently, controller 40 activates the pressure detection mechanism. The pressure detection mechanism applies a set pressure value to the motor housing, thereby detecting the hardness of the motor housing by measuring the degree of deformation. When the pressure applied by the pressure detection mechanism to the motor housing reaches a predetermined value, the pressure detection mechanism obtains... After obtaining the pressure compliance information, the controller 40 controls the sealing feeding mechanism to start after a specified time, driving the motor housing to rotate by a specified angle to perform the next position detection. After the sealing feeding mechanism drives the motor housing to complete a full circle of detection, the sealing feeding mechanism obtains complete detection information. Then, the controller 40 controls the cylinder 4 to start and reset. The cylinder 4 drives the sliding frame 2 and the sealing feeding mechanism to move, thereby driving the motor housing to move through the third opening 39 and move out, completing the hardness detection of the motor housing. During the hardness detection of the motor housing by the pressure detection mechanism, if the hardness is found to be substandard, the controller 40 controls the cylinder 4 to drive the motor housing to move through the third opening 39 and move out, ending the hardness detection of the motor housing.

[0067] Specifically, the pressure detection mechanism includes a hydraulic rod 17 and a laser receiver 22. A lifting platform 18 is fixed to the bottom of the telescopic rod of the hydraulic rod 17. A pressure sensor 19 is fixed to the bottom of the lifting platform 18, and a pressing block 20 is fixed to the bottom of the pressure sensor 19. A laser lamp 21 is fixed to the side of the lifting platform 18 facing away from the third opening 39. The laser receiver 22 is fixed inside the housing 1 on the inner wall opposite to the third opening 39. The laser lamp 21 and the laser receiver 22 are compatible. During operation, the controller 40 controls the hydraulic rod 17 to start. After the hydraulic rod 17 starts, it pushes the lifting platform 18 downwards through its telescopic end. The lifting platform 18 causes the pressure sensor 19 and the laser lamp 21 to move downwards. The pressure sensor 19 causes the pressing block 20 to move downwards. After the extrusion block 20 presses against the motor housing, pressure is applied to the motor housing. At this time, the pressure sensor 19 detects the applied pressure. When the pressure sensor 19 detects that the applied pressure has reached the predetermined pressure value, the laser lamp 21 is activated. After the laser lamp 21 is activated, it emits rays. The laser receiver 22 receives the rays emitted by the laser lamp 21 and records the position of the laser lamp 21. This records the positional change of the extrusion block 20 during the hardness detection of the motor housing, thereby realizing the deformation detection of the motor housing. The hardness of the motor housing is reflected by the deformation of the motor housing, thus completing the hardness detection of the motor housing. After the pressure applied to the motor housing reaches the predetermined value, the hydraulic rod 17 resets within a specified time, completing the detection process.

[0068] Specifically, the sealing feeding mechanism includes a mounting frame 5 and a sealing mechanism. The mounting frame 5 is fixed to the side of the sliding frame 2 facing the housing 1. An arc-shaped frame 7 is fixed to the top of the mounting frame 5. A rotating cylinder 8 is rotatably fitted around the outer ring of the arc-shaped frame 7. A rotating frame 9 is fixed to the inner ring of the rotating cylinder 8. A first inner groove 10 is opened at the end of the rotating frame 9 facing the fixed support frame 11. The first inner groove 10 is inserted and matched with the fixed support frame 11. A motor 6 is fixed to the top of the mounting frame 5. The output shaft of the motor 6 is coaxially and fixedly connected to the rotating frame 9. A positioning mechanism is installed between the rotating frame 9 and the fixed support frame 11. The positioning mechanism is used to position the motor housing. The sealing mechanism is installed between the rotating cylinder 8 and the fixed support frame 11. The sealing mechanism is used to provide heat insulation and sealing for the third opening 39. During operation, the operator puts the motor housing over the positioning mechanism, and then the sliding frame 2 drives the mounting frame 5 and the arc-shaped frame 7. The frame 7, rotating cylinder 8, and rotating frame 9 move, thereby driving the positioning mechanism and motor housing through the third opening 39 into the interior of the housing 1 to complete the loading of the motor housing. After the rotating frame 9 moves to match the fixed support frame 11 through the first inner groove 10, the fixed support frame 11 supports the positioning mechanism to fix the motor housing, and the fixed support frame 11 assists the rotating frame 9 in supporting the motor housing, thus facilitating the pressure testing mechanism to perform hardness testing on the motor housing. The motor 6 can start to drive the rotating frame 9 and rotating cylinder 8 to rotate. The rotating cylinder 8 is supported by the rotation of the arc frame 7. The rotating frame 9 drives the motor housing to rotate a certain angle through the positioning mechanism, thereby performing testing on the remaining positions of the motor housing, which is beneficial for testing the motor housing at various positions and for performing all-round hardness testing on the motor housing.

[0069] Specifically, the positioning mechanism includes multiple sets of first springs 13 and multiple first openings 16. Each set of first springs 13 is fixed to the outer wall of the rotating frame 9 in a circumferential array. Two first springs 13 form a group, and a support plate 14 is fixed to the end of the first springs 13 in the same group facing away from the rotating frame 9. An arc-shaped push plate 15 is fixed to the side of all support plates 14 facing the rotating frame 9, which drives the first openings 16 to form a circumferential array that penetrate the outer wall of the rotating frame 9. A temperature sensor 41 is fixedly embedded on the side of one of the support plates 14 facing away from the rotating frame 9. During operation, the operator places the motor housing over all the support plates 14. The end of the support plate 14 facing away from the motor 6 is arc-shaped, so that the arc-shaped surface guides the motor housing, allowing the motor housing to be fitted onto the outer ring of the support plate 14. The first springs 13 support the support plates 14. The support plate 14 can elastically support and fix the motor housing. When the motor housing is installed, the temperature sensor 41 is attached to the motor housing, allowing the temperature sensor 41 to detect the temperature of the motor housing. This enables the temperature sensor 41 to obtain cooling information when the motor housing cools down to the set temperature, allowing the controller 40 to control the pressure detection mechanism to start. Subsequently, after the fixed support frame 11 is inserted into the first inner groove 10, the side wall of the fixed support frame 11 pushes the arc-shaped push plate 15, causing the arc-shaped push plate 15 to move away from the first inner groove 10 along the first opening 16. The arc-shaped push plate 15 pushes the support plate 14, so that the support plate 14 is rigidly supported by the arc-shaped push plate 15, thereby rigidly supporting and fixing the motor housing, which facilitates the subsequent application of pressure to the motor housing for hardness testing.

[0070] Specifically, the sealing mechanism includes a second groove 27 and an annular plate 24. The second groove 27 is located on the outer wall of the fixed support frame 11. Multiple rotating rods 28 are rotatably mounted in a circular array inside the second groove 27. Torsion springs 29 are fitted onto the outer wall of the rotating shaft of all rotating rods 28. The two ends of the torsion springs 29 are fixedly connected to the adjacent rotating rods 28 and the inner wall of the second groove 27, respectively. A heat insulation cloth 30 is fixed to the outer ring of all rotating rods 28. The annular plate 24 is fixed to the end of the rotating cylinder 8 facing the sliding frame 2. A second spring 25 is fixed to the side of the annular plate 24 facing the sliding frame 2, and a heat insulation plate 26 is fixed to the end of the second spring 25 facing the sliding frame 2. During operation, when the motor housing is not through the third opening 39, the rotating rods 28 are in an upright state under the torsional force of the torsion springs 29, thereby causing the rotating rods 28 to drive the heat insulation cloth 30 into an unfolded state, thus allowing… When the heat insulation cloth 30 is unfolded, it can seal the third opening 39, which is beneficial for heat insulation and sealing of the third opening 39. When the rotating frame 9 drives the motor housing through the third opening 39, the end of the rotating frame 9 pushes the heat insulation cloth 30 and the flipping rod 28, thereby pushing the flipping rod 28 to flip back into the second groove 27, so that the heat insulation cloth 30 is retracted. At the same time, the rotating cylinder 8 drives the heat insulation plate 26 to move, and the heat insulation plate 26 seals the third opening 39. As the rotating cylinder 8 moves, the third opening 39 pushes the heat insulation plate 26 to compress the second spring 25. The annular plate 24 can support the second spring 25, so that when the motor housing is loaded, the heat insulation plate 26 can seal the third opening 39, which is beneficial for heat insulation and sealing of the third opening 39, and for keeping the inside of the housing 1 at a low temperature, which is beneficial for hardness testing of the motor housing at a low temperature.

[0071] In one embodiment of the present invention, a second inner groove 12 is provided inside the fixed support frame 11. A round rod matching the second inner groove 12 is fixed inside the first inner groove 10. A plurality of second openings 35 are provided in a circular array on the inner wall of the second inner groove 12. A sliding block 36 is slidably inserted inside all the second openings 35. A first wavy groove 37 is provided on the side of all the sliding blocks 36 facing the inside of the second inner groove 12. A second wavy groove 38 is provided on the outer wall of the round rod. The second wavy groove 38 is adapted to the first wavy groove 37. A camera 34 is fixed at the bottom of the inner wall of the housing 1. The camera 34 is located directly below the fixed support frame 11. During operation, if the deformation of the motor housing meets the standard during the hardness test, but the motor housing breaks, the motor may still be substandard during the test. However, it is difficult to detect by measuring the deformation through pressure extrusion, which leads to an error in the hardness test of the motor housing. This embodiment of the invention can solve the above problems. The specific implementation method is as follows: When the fixed support frame 11 is inserted into the first inner groove 10, the round rod is inserted into the second inner groove 12. When the rotating frame 9 drives the round rod to rotate, the round rod drives the second wavy groove 38 to rotate. During the rotation of the second wavy groove 38, it pushes the first wavy groove 37, thereby driving the first wavy groove 37 to drive the sliding block 36 to vibrate inside the second opening 35. During the vibration of the sliding block 36, the arc-shaped push plate 15 can be driven to vibrate as the rotating frame 9 rotates and passes through the sliding block 36, thereby driving the motor housing to vibrate through the support plate 14. At this time, if the motor housing breaks during the hardness test, the fragments fall downward under the action of vibration. The falling fragments are captured by the camera 34. After the camera 34 captures the fragments, it controls the cylinder 4 to start through the controller 40 to drive the motor housing to move out of the housing 1 and end the hardness test, thereby improving the accuracy of the hardness test of the motor housing.

[0072] In one embodiment of the present invention, two rotating rods 31 are symmetrically and rotatably mounted on the inner wall of the housing 1. The rotating rods 31 are located on both sides directly below the extrusion block 20. Soft brushes 32 are fixed to the outside of each of the two rotating rods 31. The ends of the two rotating rods 31 facing the sliding frame 2 extend through the housing 1 and outwards. An annular groove 33 is formed on the side wall of the heat insulation plate 26 facing the rotating rods 31, and the annular groove 33 is adapted to the rotating rods 31. During operation, as the hydraulic rod 17 is activated and drives the extrusion block 20 to move downwards, the extrusion block 20 moves past the soft brushes 32, causing the soft brushes to... The 32 can clean the bottom of the extrusion block 20. When the rotating cylinder 8 rotates, the rotating rod 31, which is in frictional contact with it, rotates through the annular groove 33. The rotating rod 31 drives the soft brush 32 to rotate, so that the soft brush 32 cleans the bottom of the extrusion block 20 during the rotation process. This helps to prevent the extrusion block 20 from producing broken fragments of the motor housing during the inspection of the motor housing and adhering to the bottom of the extrusion block 20. This would make the motor housing more prone to breakage under the action of the fragments during the next inspection, thus affecting the accuracy of the motor housing inspection.

[0073] like Figure 1 The method for testing the hardness of an electric motor housing, as shown in the diagram, includes the following steps:

[0074] Step 1: Obtain the first request information, which is generated by the sealing and feeding mechanism after obtaining the cooling information;

[0075] Step 2: Generate first control information, which is used to control the start of the pressure detection mechanism;

[0076] Step 3: Send the first control information to the pressure detection mechanism to control the pressure detection mechanism to start applying pressure;

[0077] Step 4: Obtain the second request information, which is generated by the pressure testing agency after detecting that the pressure meets the standard.

[0078] Step 5: Generate the second and third control information;

[0079] Step 6: Send the second control information to the pressure detection mechanism to control the pressure detection mechanism to start detecting deformation, and send the third control information to the sealing feeding mechanism to control the sealing feeding mechanism to start after a set time;

[0080] Step 7: Obtain the third request information, which is generated by the sealing and feeding mechanism after obtaining the rotation information;

[0081] Step 8: Generate fourth control information, which is used to control the start of the pressure detection mechanism;

[0082] Step 9: Send the fourth control information to the pressure detection mechanism to control the pressure detection mechanism to start applying pressure;

[0083] Step 10: Obtain the fourth request information, which is generated by the sealing and feeding mechanism after obtaining complete detection information;

[0084] Step 11: Generate the fifth control information, which is used to control the cylinder 4 to start and reset.

[0085] Step 12: Send the fifth control information to cylinder 4 to control cylinder 4 to start and reset;

[0086] In this process, after the motor housing enters the interior of housing 1, the temperature of the motor housing cools down to the set temperature in the low-temperature environment inside housing 1. The sealing and feeding mechanism obtains the cooling information through temperature sensor 41. When the pressure detection mechanism starts to perform pressure detection on the motor housing, the pressure detection mechanism obtains the pressure compliance information when the detection pressure on the motor housing reaches the set pressure value. When the sealing and feeding mechanism drives the motor housing to rotate a full circle to complete the full circle hardness test of the motor housing, the sealing and feeding mechanism obtains complete detection information. The second control information is used to control the sealing and feeding mechanism to start after a specified time. Within the specified time, the pressure detection mechanism completes one detection and reset process of the motor housing.

[0087] like Figure 11 As shown, it also includes:

[0088] A1. Obtain the fifth request information, which is generated by the pressure testing agency after obtaining information that the hardness does not meet the standard;

[0089] A2. Generate sixth control information, which is used to control the start and reset of the sealing feeding mechanism;

[0090] A3. Send the sixth control information to cylinder 4 to control cylinder 4 to start and reset;

[0091] During the hardness test of the motor housing by the pressure testing mechanism, if the pressure testing mechanism detects that the deformation of the motor housing exceeds the predetermined value due to the compression of the motor housing at the set pressure value, the pressure testing mechanism obtains information that the hardness does not meet the standard. At this time, the information that the hardness does not meet the standard generates a fourth request information and sends the fourth request information to the controller 40 to request the controller 40 to control the sealing feeding mechanism to start and reset, thereby moving the motor housing out of the unloading process and ending the test.

[0092] like Figure 12 As shown, the specific control method for the pressure detection mechanism includes the following steps:

[0093] S1. Obtain the first or fourth control information, and the pressure detection mechanism starts applying pressure;

[0094] S2. Obtain information on whether the pressure target has been met;

[0095] S3. Generate the second request information;

[0096] S4. Send the second request information to the controller 40;

[0097] S5. Obtain the second control information, and the pressure detection mechanism starts detecting deformation.

[0098] S6. Obtain information on whether the hardness meets the standard or not. Information on whether the hardness meets the standard is generated by the pressure testing agency after detecting that the hardness of the motor housing meets the standard. Information on whether the hardness does not meet the standard is generated by the pressure testing agency after detecting that the hardness of the motor housing does not meet the standard.

[0099] S7. If the hardness meets the standard, generate the test result information; if the hardness does not meet the standard, generate the fifth request information.

[0100] S8. Send the detection result information or the fifth request information to the controller 40;

[0101] Specifically, when the pressure testing mechanism detects that the deformation of the motor housing caused by the pressure testing mechanism on the motor housing is within a predetermined range when the pressure value is set, the pressure testing mechanism obtains the hardness standard information, generates the test result information, and then sends the test result information to the controller 40. After receiving the test result information, the controller 40 performs data statistics, and the third control information controls the pressure testing mechanism to start, so that the pressure testing mechanism starts to detect the deformation of the motor housing when it is subjected to pressure.

[0102] Working principle of this invention: The cooler 23 can seal and cool the inside of the housing 1. The operator places the motor housing to be tested onto the sealing feeding mechanism. Then, the operator starts the cylinder 4. The cylinder 4 moves the sliding frame 2 through the telescopic rod. The sliding frame 2 moves the sealing feeding mechanism, causing the sealing feeding mechanism to carry the motor housing through the third opening 39 and into the inside of the housing 1. When the operator places the motor housing, the third opening 39 is in a sealed state. During the process of the cylinder 4 moving the motor housing through the third opening 39, the third opening 39 is pushed open by the motor housing. After the cylinder 4 carries the motor housing through the third opening 39, the third opening 39 is in a sealed state. This ensures that the third opening 39 is sealed before and after feeding, thus maintaining a low temperature inside the housing 1. This facilitates the operator's hardness testing of the motor housing inside the housing 1 at a low temperature. After the cylinder 4 carries the motor housing into the housing 1 to complete the feeding, the sealing feeding mechanism detects the temperature of the motor housing. The temperature of the motor housing is lowered to a set value. After the set temperature is reached, the temperature sensor 41 in the sealing and feeding mechanism acquires cooling information. Then, the controller 40 controls the pressure detection mechanism to start. The pressure detection mechanism applies a set pressure value to the motor housing and detects the hardness of the motor housing by detecting the degree of deformation. When the pressure applied to the motor housing by the pressure detection mechanism reaches the predetermined value, the pressure detection mechanism acquires the pressure compliance information. Then, the controller 40 controls the sealing and feeding mechanism to start after a specified time, driving the motor housing to rotate by a specified angle to perform the next position detection. After the sealing and feeding mechanism drives the motor housing to complete a full circle of detection, the sealing and feeding mechanism acquires complete detection information. Then, the controller 40 controls the cylinder 4 to start and reset. The cylinder 4 drives the sliding frame 2 and the sealing and feeding mechanism to move, thereby driving the motor housing to move through the third opening 39 and move out, completing the hardness detection of the motor housing. During the hardness detection of the motor housing by the pressure detection mechanism, if the hardness is found to be substandard, the controller 40 controls the cylinder 4 to move the motor housing through the third opening 39 and move out, ending the hardness detection of the motor housing.

[0103] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A device for testing the hardness of an electric motor housing, comprising a housing (1) and a sliding frame (2), characterized in that, The housing (1) has a third opening (39) through the side wall facing the sliding frame (2). The bottom of the housing (1) has a first groove (3). The lower end of the sliding frame (2) is slidably connected to the inside of the first groove (3). A cylinder (4) is fixedly installed inside the first groove (3). The output shaft of the cylinder (4) extends through the side wall of the housing (1) and is fixedly connected to the sliding frame (2). A controller (40) is fixed on the inner wall of the first groove (3). A fixed support frame (11) is fixed to the bottom of the inner wall of the housing (1). A sealing feeding mechanism is installed between the sliding frame (2) and the fixed support frame (11). The sealing feeding mechanism is used to send the motor housing into the interior of the housing (1) for hardness testing. The sealing feeding mechanism is used to keep the interior of the housing (1) sealed before and after feeding. A cooler (23) is fixed to the top of the inner wall of the housing (1), and a pressure detection mechanism is installed on the top of the inner wall of the housing (1). The pressure detection mechanism is used to detect the hardness of the motor housing. The pressure detection mechanism includes a hydraulic rod (17) and a laser receiver (22). A lifting platform (18) is fixed to the bottom of the telescopic rod of the hydraulic rod (17). A pressure sensor (19) is fixed to the bottom of the lifting platform (18). A squeezing block (20) is fixed to the bottom of the pressure sensor (19). A laser lamp (21) is fixed to the side of the lifting platform (18) facing away from the third opening (39). The laser receiver (22) is fixed to the inner wall of the housing (1) opposite to the third opening (39). The laser lamp (21) is adapted to the laser receiver (22). The sealing feeding mechanism includes a mounting frame (5) and a sealing mechanism. The mounting frame (5) is fixed to the side of the sliding frame (2) facing the housing (1). An arc frame (7) is fixed to the top of the mounting frame (5). A rotating cylinder (8) is rotatably sleeved on the outer ring of the arc frame (7). A rotating frame (9) is fixed to the inner ring of the rotating cylinder (8). A first inner groove (10) is opened at one end of the rotating frame (9) facing the fixed support frame (11). The first inner groove (10) is inserted and matched with the fixed support frame (11). A motor (6) is fixed to the top of the mounting frame (5). The output shaft of the motor (6) is coaxially fixedly connected to the rotating frame (9). A positioning mechanism is installed between the rotating frame (9) and the fixed support frame (11). The positioning mechanism is used to position the motor housing. The sealing mechanism is installed between the rotating cylinder (8) and the fixed support frame (11). The sealing mechanism is used to heat-insulate and seal the third opening (39).

2. The motor housing hardness testing device according to claim 1, characterized in that, The positioning mechanism includes multiple sets of first springs (13) and multiple first openings (16). Each set of first springs (13) is fixed in a circumferential array on the outer wall of the rotating frame (9). Two first springs (13) form a group. The end of the first springs (13) in the same group facing away from the rotating frame (9) is fixed with a support plate (14). All the support plates (14) are fixed with an arc-shaped push plate (15) on the side facing the rotating frame (9). All of them drive the first openings (16) to be opened in a circumferential array through the outer wall of the rotating frame (9). A temperature sensor (41) is fixedly embedded on the side of one of the support plates (14) facing away from the rotating frame (9).

3. The motor housing hardness testing device according to claim 1, characterized in that, The sealing mechanism includes a second groove (27) and an annular plate (24). The second groove (27) is opened on the outer wall of the fixed support frame (11). Multiple flip rods (28) are installed in a circular array inside the second groove (27). Torque springs (29) are sleeved on the outer wall of the rotating shaft of all the flip rods (28). The two ends of the torsion springs (29) are fixedly connected to the adjacent flip rods (28) and the inner wall of the second groove (27), respectively. Heat insulation cloth (30) is fixed on the outer ring of all the flip rods (28). The annular plate (24) is fixed to the end of the outer wall of the rotating cylinder (8) facing the sliding frame (2). A second spring (25) is fixed on the side of the annular plate (24) facing the sliding frame (2). A heat insulation plate (26) is fixed on the end of the second spring (25) facing the sliding frame (2).

4. The motor housing hardness testing device according to claim 3, characterized in that, The fixed support frame (11) has a second inner groove (12) inside. The first inner groove (10) has a round rod that matches the second inner groove (12) inside. The inner wall of the second inner groove (12) has several second openings (35) arranged in a circular array. All the second openings (35) have sliding blocks (36) inserted inside. All the sliding blocks (36) have a first wave-shaped groove (37) on the side facing the inside of the second inner groove (12). The outer wall of the round rod has a second wave-shaped groove (38) that matches the first wave-shaped groove (37). The bottom of the inner wall of the housing (1) has a camera (34) fixed. The camera (34) is located directly below the fixed support frame (11).

5. The motor housing hardness testing device according to claim 3, characterized in that, Two rotating rods (31) are symmetrically and rotatably mounted on the inner wall of the housing (1). The rotating rods (31) are located on both sides directly below the extrusion block (20). Soft brushes (32) are fixed to the outside of the two rotating rods (31). The ends of the two rotating rods (31) facing the sliding frame (2) extend through the housing (1) and outward. An annular groove (33) is provided on the side wall of the heat insulation plate (26) facing the rotating rods (31). The annular groove (33) is adapted to the rotating rods (31).

6. A testing method for a motor housing hardness testing device, applicable to the motor housing hardness testing device according to any one of claims 1 to 5, characterized in that, The testing method includes the following steps: Step 1: Obtain the first request information, which is generated by the sealing and feeding mechanism after obtaining the cooling information; Step 2: Generate first control information, which is used to control the start of the pressure detection mechanism; Step 3: Send the first control information to the pressure detection mechanism to control the pressure detection mechanism to start applying pressure; Step 4: Obtain the second request information, which is generated by the pressure testing agency after detecting that the pressure meets the standard. Step 5: Generate the second and third control information; Step 6: Send the second control information to the pressure detection mechanism to control the pressure detection mechanism to start detecting deformation, and send the third control information to the sealing feeding mechanism to control the sealing feeding mechanism to start after a set time; Step 7: Obtain the third request information, which is generated by the sealing and feeding mechanism after obtaining the rotation information; Step 8: Generate fourth control information, which is used to control the start of the pressure detection mechanism; Step 9: Send the fourth control information to the pressure detection mechanism to control the pressure detection mechanism to start applying pressure; Step 10: Obtain the fourth request information, which is generated by the sealing and feeding mechanism after obtaining complete detection information; Step 11: Generate the fifth control information, which is used to control the cylinder (4) to start and reset; Step 12: Send the fifth control information to cylinder (4) to control cylinder (4) to start and reset.

7. The testing method of the motor housing hardness testing device according to claim 6, characterized in that, Also includes: A1. Obtain the fifth request information, which is generated by the pressure testing agency after obtaining information that the hardness does not meet the standard; A2. Generate sixth control information, which is used to control the start and reset of the sealing feeding mechanism; A3. Send the sixth control information to the cylinder (4) to control the cylinder (4) to start and reset.

8. The testing method of the motor housing hardness testing device according to claim 7, characterized in that, The specific control method for the pressure detection mechanism includes the following steps: S1. Obtain the first or fourth control information, and the pressure detection mechanism starts applying pressure; S2. Obtain information on whether the pressure target has been met; S3. Generate the second request information; S4. Send the second request information to the controller (40); S5. Obtain the second control information, and the pressure detection mechanism starts detecting deformation. S6. Obtain information on whether the hardness meets the standard or not. Information on whether the hardness meets the standard is generated by the pressure testing agency after detecting that the hardness of the motor housing meets the standard. Information on whether the hardness does not meet the standard is generated by the pressure testing agency after detecting that the hardness of the motor housing does not meet the standard. S7. If the hardness meets the standard, generate the test result information; if the hardness does not meet the standard, generate the fifth request information. S8. Send the detection result information or the fifth request information to the controller (40).

Images