A coaxiality gauge compatible with bearing seats of multiple models of washing machines

Abstract

The utility model discloses a coaxiality gauge of compatible multiple model washing machine bearing seat, including base, be provided with detection platform on the base, the upper surface of detection platform is inclined to horizontal plane, be provided with two lateral distribution's support column on detection platform, washing machine bearing seat cover two support column outside, and two support column are contacted with the inner side of bearing hole of washing machine bearing seat simultaneously, and the bottom of washing machine bearing seat is plane and is contacted with the upper surface of detection platform, still be provided with adjustable fixed bolster on the base, and fixed bolster is connected with lever table through movable support, and the lower part of lever table is the detection contact for contacting with the inner side of bearing hole of washing machine bearing seat, and movable support and fixed bolster rotatablely connected to make detection contact can be close to or away from the inner side of bearing hole of washing machine bearing seat. The scheme is suitable for the bearing seat detection of different aperture and height, and it is helpful to reduce enterprise cost, improve detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of parts inspection devices, specifically relating to a coaxiality inspection tool that is compatible with bearing housings of multiple washing machines. Background Technology

[0002] In machining processes, bearing housings are common components, and the accuracy of their inner hole (circular bearing bore) dimensions has a crucial impact on the overall product performance and assembly. The coaxiality of washing machine bearing housings directly affects the washing machine's operational stability and lifespan. Different models of bearing housings have varying outer diameters and inner hole dimensions. Traditional inspection tools have poor compatibility, requiring frequent replacement of positioning components, resulting in low inspection efficiency. Furthermore, the existing measurement method uses coordinate measuring machines (CMMs) with universal magnetic V-block positioning. The V-block contacts the machined, regular surface of the bearing housing, relying on magnetic force to stabilize the workpiece. This existing method cannot achieve precise positioning for washing machine bearing housings. Since the outer surface of the bearing housing is mostly an unmachined blank, the magnetic V-block positioning method requires multiple people to coordinate and adjust, and each workpiece needs repeated alignment, increasing the company's measurement costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a coaxiality inspection tool that is compatible with bearing housings of multiple washing machines, thereby solving the problems of poor compatibility and time-consuming testing of existing inspection tools, and improving testing accuracy and efficiency.

[0004] According to the technical solution of this utility model, this utility model provides a coaxiality inspection tool compatible with multiple models of washing machine bearing housings, including a base, a detection platform on the base, the upper surface of the detection platform being inclined relative to the horizontal plane, and two laterally distributed support columns on the detection platform; the washing machine bearing housing is sleeved on the two support columns, and the two support columns simultaneously contact the inner surface of the bearing hole of the washing machine bearing housing, the bottom of the washing machine bearing housing being flat and contacting the upper surface of the detection platform; the base is also provided with an adjustable fixed bracket, the fixed bracket being connected to a lever gauge through a movable bracket, the lower part of the lever gauge being a detection contact for contacting the inner surface of the bearing hole of the washing machine bearing housing, and the movable bracket being rotatably connected to the fixed bracket so that the detection contact can approach or move away from the inner surface of the bearing hole of the washing machine bearing housing.

[0005] In some embodiments, the movable support is provided with a fine-tuning component, which includes a fine-tuning lever, a fine-tuning pin, and a return spring. The fine-tuning lever is rotatably connected to the movable support via a lever shaft, and the movable support is connected to a lever gauge via the fine-tuning lever. The fine-tuning pin is threadedly connected to the movable support, and the end of the fine-tuning pin abuts against the fine-tuning lever. The return spring abuts against or is connected to the fine-tuning lever, so that the fine-tuning pin and the return spring can apply opposite forces to the fine-tuning lever.

[0006] In some embodiments, the upper part of the movable bracket is provided with a receiving groove, the fine-tuning lever is disposed in the receiving groove, and the lever shaft is located in the middle of the receiving groove; the movable bracket has a threaded hole on the side away from the lever gauge, which extends from the bottom of the movable bracket to the receiving groove, the fine-tuning pin passes through the threaded hole from bottom to top and is threadedly connected to the threaded hole, and the upper end of the fine-tuning pin abuts against the lower surface of the end of the fine-tuning lever away from the lever gauge; the end of the fine-tuning lever connected to the lever gauge extends outside the movable bracket; the return spring is a compression spring, located in the receiving groove on the side close to the lever gauge, the upper end of the return spring abuts against the fine-tuning lever, and the lower end of the return spring abuts against the bottom surface of the receiving groove.

[0007] In some embodiments, the fixed bracket includes a vertically arranged vertical rod and a horizontally arranged crossbar; a vertical sleeve is fixedly arranged on the base, and the lower end of the vertical rod is slidably inserted into the sleeve; a through first set screw hole is opened on the side of the sleeve and a first set screw is threadedly connected thereto, and the end of the first set screw located inside the sleeve abuts against the side of the vertical rod; the crossbar is connected to the upper part of the vertical rod, and the end of the crossbar away from the vertical rod is rotatably connected to the end of the movable bracket away from the lever gauge through a movable shaft.

[0008] In some embodiments, the upper part of the vertical rod is provided with a through transverse adjustment hole, and the end of the horizontal rod away from the lever gauge can slide through the transverse adjustment hole; the upper surface of the vertical rod is provided with a through second set screw hole and a second set screw is threadedly connected thereto, and the end of the second set screw located in the transverse adjustment hole abuts against the upper surface of the horizontal rod.

[0009] In some embodiments, a rotating connecting groove is provided at the end of the horizontal bar away from the vertical bar, and a limiting baffle is formed at the bottom of the rotating connecting groove. The two side walls of the rotating connecting groove are respectively connected to the two ends of the movable rotating shaft. In the detection state, the movable bracket is placed horizontally and the lower surface of the movable bracket abuts against the upper surface of the limiting baffle.

[0010] In some implementations, a counterweight and / or an operating handle are connected above the movable support.

[0011] In some embodiments, both the base and the testing platform are flat, with the testing platform located at one end of the base along its length and the fixed bracket connected to the other end of the base along its length. An inclined support extending downward is provided at either end of the base along its length, so that the upper surfaces of the base and the testing platform are placed at an angle relative to the horizontal plane. Both support columns are located on the middle of the upper surface of the testing platform, biased toward the inclined support.

[0012] In some embodiments, the coaxiality gauge for the multi-model washing machine bearing housing is a symmetrical structure in the width direction of the base.

[0013] In some embodiments, the detection platform has multiple grooves, and the upper surface of the detection platform outside the grooves is a plane for placing the washing machine bearing seat.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model discloses a coaxiality gauge compatible with multiple models of washing machine bearing housings. It employs an inclined testing platform, allowing the washing machine bearing housing under test to adhere to the testing platform and contact the two support columns under gravity. During testing, an adjustable fixed bracket allows the lever gauge's testing contact to rest against the upper part of the inner surface of the bearing hole in the washing machine bearing housing. Under gravity, the two support columns rest against the lower part of the inner surface of the bearing hole, providing support and positioning. The washing machine bearing housing can rotate on the testing platform, sliding in contact with the support columns during rotation. The lever gauge can accurately measure the circumferential runout of the bearing hole, thus determining whether the bearing housing's coaxiality meets the requirements. This method can test washing machine bearing housings with various inner diameters, eliminating the cost of multiple coaxiality gauges and ensuring testing accuracy. Furthermore, the rotatable movable bracket allows for quick switching between the state of loading / unloading the washing machine bearing housing and the testing state, facilitating operation and increasing testing efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the inspection tool provided by this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the inspection tool provided by this utility model during inspection.

[0017] Figure 3 This is a partial cross-sectional view of the movable support portion of the inspection fixture provided by this utility model.

[0018] Explanation of reference numerals in the attached figures: 100. Washing machine bearing housing; 1. Base; 2. Detection platform; 3. Support column; 4. Fixed bracket; 5. Movable bracket; 6. Lever gauge; 7. Detection contact; 8. Fine-tuning lever; 9. Fine-tuning top column; 10. Return spring; 11. Lever shaft; 12. Receiving groove; 13. Vertical rod; 14. Horizontal rod; 15. Sleeve; 16. First set screw; 17. Movable shaft; 18. Horizontal adjustment hole; 19. Second set screw; 20. Limiting baffle; 21. Counterweight; 22. Inclined support; 23. Groove. Detailed Implementation

[0019] This invention provides a coaxiality gauge that is compatible with bearing housings of multiple washing machines, solving the problems of poor compatibility and time-consuming testing of existing gauges, and improving testing accuracy and efficiency.

[0020] Please see Figure 1 , Figure 2 This utility model discloses a coaxiality inspection fixture compatible with bearing housings of multiple washing machines. It includes a base 1, on which a testing platform 2 is mounted. The base 1 and testing platform 2 provide a stable support platform for the entire fixture, and their surfaces are precision-machined to ensure flatness. The upper surface of the testing platform 2 is inclined relative to the horizontal plane and is used to place the washing machine bearing housing 100 to be inspected. Two laterally distributed support columns 3 are provided on the testing platform 2. The support columns 3 are, for example, cylinders with smooth sides. The washing machine bearing housing 100 is fitted over the two support columns 3, and both support columns 3 simultaneously contact the inner surface of the bearing hole of the washing machine bearing housing 100. The bottom of the washing machine bearing housing 100 is flat and contacts the upper surface of the testing platform 2. An adjustable fixed bracket 4 is also provided on the base 1. The fixed bracket 4 is connected to a lever gauge 6 (e.g., a dial indicator or micrometer) via a movable bracket 5. The lower part of the lever gauge 6 is a detection contact 7 (preferably a replaceable detection contact to ensure detection accuracy) for contacting the inner surface of the bearing hole of the washing machine bearing housing 100. The movable bracket 5 is rotatably connected to the fixed bracket 4 so that the detection contact 7 can move closer to or further away from the inner surface of the bearing hole of the washing machine bearing housing 100, thereby facilitating the loading, unloading, and detection process of the washing machine bearing housing 100 on this inspection fixture.

[0021] As a supplementary explanation, the fixed bracket 4 refers to the bracket used to fix the position of the lever gauge 6 during testing. The adjustable fixed bracket 4 means that the position of the testing contact 7 in the testing state is adjustable. There are many structures and methods for adjusting the fixed bracket 4, such as the fixed bracket 4 being able to rotate or extend or retract as a whole or in part, and therefore it is not limited to the structure of the embodiment shown in the accompanying drawings. For the inner side of the bearing hole of an ideal workpiece, after rotation while in contact with the support column 3, the circumferential contour of the inner side of the bearing hole will remain completely unchanged, and the contours of the upper and lower sections of the bearing hole will always be concentric. If the bearing hole is not ideal, fluctuations can be detected by the lever gauge 6 after rotation; if the fluctuations exceed the set threshold, it is considered a defective product. The distance formed by the two support columns 3 is less than the diameter of the washing machine bearing seat 100 (specifically, for example, less than the diameter of the smallest washing machine bearing seat), thereby enabling stable positioning of the inner side of bearing holes of various sizes.

[0022] Furthermore, please also refer to Figure 3The movable bracket 5 is equipped with a fine-tuning component, which includes a fine-tuning lever 8, a fine-tuning pin 9, and a return spring 10. The fine-tuning lever 8 is rotatably connected to the movable bracket 5 via a lever shaft 11, and the movable bracket 5 is connected to the lever gauge 6 via the fine-tuning lever 8. The fine-tuning pin 9 is threadedly connected to the movable bracket 5, and its end abuts against the fine-tuning lever 8. The return spring 10 abuts against or is connected to the fine-tuning lever 8, so that the fine-tuning pin 9 and the return spring 10 can apply opposite forces to the fine-tuning lever 8. In use, by turning and adjusting the fine-tuning pin 9, the angle of the fine-tuning lever 8 can be controlled, thereby fine-tuning the position of the detection contact 7; while the return spring 10 always provides a force opposite to that of adjusting the fine-tuning pin 9, ensuring that the fine-tuning lever 8 can be stably maintained in the desired position.

[0023] Figure 3 In the preferred embodiment shown, the upper part of the movable bracket 5 is provided with a receiving groove 12, the fine adjustment lever 8 is disposed in the receiving groove 12, and the lever shaft 11 is located in the middle of the receiving groove 12; the movable bracket 5 has a threaded hole on the side away from the lever gauge 6, which extends from the bottom of the movable bracket 5 to the receiving groove 12, the fine adjustment pin 9 passes through the threaded hole from bottom to top and is threadedly connected to the threaded hole, and the upper end of the fine adjustment pin 9 abuts against the lower surface of the end of the fine adjustment lever 8 away from the lever gauge 6; the end of the fine adjustment lever 8 connected to the lever gauge 6 extends outside the movable bracket 5; the return spring 10 is a compression spring, the return spring 10 is located in the receiving groove 12 on the side close to the lever gauge 6, the upper end of the return spring 10 abuts against the fine adjustment lever 8, and the lower end of the return spring 10 abuts against the bottom surface of the receiving groove 12. It is conceivable that in other embodiments, the return spring can also be a tension spring, located on the same side as the fine-tuning pin 9, or the fine-tuning pin 9 and the lever gauge 6 can be located on the same side of the lever shaft 11, etc., all of which can achieve the adjustment of the position of the lever gauge 6 by means of the fine-tuning pin 9. In this preferred embodiment, the lever gauge 6 and the fine-tuning pin 9 are located on opposite sides of the lever shaft 11, and both the fine-tuning pin 9 and the detection contact 7 are located below the fine-tuning lever 8, and the pressure direction of the detection contact 7 is from the fine-tuning pin 9 to the lever gauge 6. Figure 3 (The middle is to the right), so even if the detection contact 7 is subjected to a large force, the lever gauge 6 will not move (the lever shaft 11 will not rotate counterclockwise).

[0024] Please see Figure 1Preferably, the fixed bracket 4 includes a vertically arranged vertical rod 13 and a horizontally arranged horizontal rod 14. A vertical sleeve 15 is fixedly arranged on the base 1. The lower end of the vertical rod 13 is slidably inserted into the sleeve 15. The side of the sleeve 15 has one or more through first set screw holes and is threadedly connected to a first set screw 16. The end of the first set screw 16 located inside the sleeve 15 abuts against the side of the vertical rod 13; thus, the fixed bracket 4 can be moved up and down to adjust the height, and then the first set screw 16 is tightened to achieve positioning. The horizontal rod 14 is connected (adjustably or fixedly connected) to the upper part of the vertical rod 13. The end of the horizontal rod 14 away from the vertical rod 13 is rotatably connected to the end of the movable bracket 5 away from the lever gauge 6 through a movable shaft 17, so that the movable bracket 5 and the lever gauge 6 can be raised to facilitate loading and unloading of the workpiece to be tested. During testing, the movable bracket 5 is placed horizontally and the lever gauge 6 contacts the inner side of the bearing hole of the workpiece.

[0025] Furthermore, the horizontal bar 14 and the vertical bar 13 are preferably adjustable. Specifically, for example, the upper part of the vertical bar 13 is provided with a through-hole lateral adjustment hole 18, the shape of which matches the horizontal bar 14. The end of the horizontal bar 14 furthest from the lever gauge 6 slidably passes through the lateral adjustment hole 18. The upper surface of the vertical bar 13 has one or more through-holes for second setter screws and is threadedly connected to a second setter screw 19. One end of the second setter screw 19 located within the lateral adjustment hole 18 abuts against the upper surface of the horizontal bar 14. This allows the horizontal bar 14 to be moved laterally to adjust the position of the lever gauge 6 at its end, and then the second setter screw 19 can be tightened to achieve positioning.

[0026] Further, please refer to Figure 3 A rotating connecting groove is provided at the end of the horizontal bar 14 away from the vertical bar 13. A limiting baffle 20 is formed at the bottom of the rotating connecting groove, and the two side walls of the rotating connecting groove are respectively connected to the two ends of the movable rotating shaft 17. In the testing state, the movable bracket 5 is placed horizontally and the lower surface of the movable bracket 5 abuts against the upper surface of the limiting baffle 20, thereby achieving positioning, for example, when the movable bracket 5 is in a horizontal state (the direction of extension of the horizontal bar 14), preventing the movable bracket 5 from continuing to rotate downward.

[0027] More preferably, a counterweight 21 and / or an operating handle are connected to the upper part of the movable support 5; the counterweight 21 and the operating handle may be installed in combination, for example, the operating handle is installed on the counterweight; or the operating handle itself has a counterweight function. The purpose of setting the counterweight 21 is to use its gravity to press down on the movable support 5 in the detection state, so as to ensure the stability of the movable support 5 and the lever gauge 6; if there is no counterweight 21, it can also be pressed down by hand, or a buckle structure can be added near the movable pivot 17, etc. The operating handle facilitates operation. For example, the operating handle extends upward or diagonally upward on the movable support 5, and the movable support 5 can be rotated or pressed down by moving the operating handle.

[0028] Preferably, both the base 1 and the testing platform 2 are flat to facilitate manufacturing. The testing platform 2 is located at one end of the base 1 along its length, and the fixing bracket 4 is connected to the other end of the base 1 along its length. An inclined support 22 extending downwards is provided at either end of the base 1 along its length, so that the upper surfaces of the base 1 and the testing platform 2 are placed at an angle relative to the horizontal plane. The inclined support 22 may be, for example, a bolt, allowing adjustment of its downward extension length and thus the tilt angle; the inclined support 22 may also be an adjustable or non-adjustable plate structure or other structures. Furthermore, both support columns 3 are located on the middle of the upper surface of the testing platform 2, biased towards the inclined support 22. Thus, after the fixture is placed on a roughly horizontal workbench, the support columns 3 are positioned diagonally above the testing platform 2, and the washing machine bearing seat 100 can remain in contact with the two support columns 3 under gravity in a manner similar to suspension.

[0029] More preferably, the coaxiality gauge of the bearing housing compatible with multiple models of washing machines of this invention has a symmetrical structure in the width direction of the base 1. The symmetrical structure facilitates design and production. In addition, the detection position of the detection contact 7 corresponds to the axis of symmetry of the two support columns 3. The detection position of the detection contact 7 and the position of the two support columns 3 roughly form an isosceles triangle on the circumference of the inner side of the bearing hole of the workpiece. This makes the pressure direction of the workpiece on the detection contact 7 more positive, more suitable for the application of the lever gauge 6, and helps to ensure service life.

[0030] Preferably, the inspection platform 2 has multiple grooves 23, and the upper surface of the inspection platform 2 outside the grooves 23 is a plane for placing the washing machine bearing seat 100. The grooves 23 can accommodate iron filings and other debris on the workpiece, preventing these debris from affecting the flatness of the upper surface of the inspection platform 2, thus making it more suitable for timely and synchronous inspection of freshly processed workpieces in the processing workshop.

[0031] In summary, the coaxiality inspection tool of this utility model, which is compatible with multiple models of washing machine bearing housings, can meet the coaxiality testing requirements of multiple models of bearing housings, is compatible with different models, and is suitable for testing bearing housings with different bore diameters and heights. It helps to reduce enterprise costs and improve testing efficiency. The invention employs an inclined testing platform, allowing the washing machine bearing seat to adhere to the platform and contact the two support columns under gravity. During testing, an adjustable fixed bracket allows the lever gauge's testing probe to rest against the upper part of the inner surface of the bearing hole in the bearing seat. Under gravity, the two support columns rest against the lower part of the inner surface of the bearing hole, providing support and positioning. The bearing seat can rotate on the testing platform, sliding against the support columns during rotation. The lever gauge accurately measures the circumferential runout of the bearing hole, thus determining whether the bearing seat's coaxiality meets requirements. This method can test washing machine bearing seats with various inner diameters, eliminating the cost of multiple coaxiality gauges and ensuring testing accuracy. Furthermore, the rotatable movable bracket allows for quick switching between the bearing seat loading / unloading state and the testing state, facilitating operation and increasing testing efficiency. In a typical embodiment of this invention, the fixed bracket is adjustable vertically to test bearing seats of different heights and horizontally to meet the testing requirements of bearing seats with different inner hole diameters. When using it, first adjust the lever gauge to initially set it by adjusting the fixed bracket (vertical rod and horizontal rod), and then fine adjust it by using the fine adjustment component. Once it is adjusted for a certain type of workpiece, the subsequent testing process of the same type of workpiece does not require further adjustment.

Claims

1. A coaxiality gauge compatible with bearing housings of multiple washing machine models, characterized in that, The system includes a base (1), on which a detection platform (2) is provided. The upper surface of the detection platform (2) is inclined relative to the horizontal plane. Two horizontally distributed support columns (3) are provided on the detection platform (2). The washing machine bearing seat (100) is fitted over the two support columns (3). The two support columns (3) simultaneously contact the inner side of the bearing hole of the washing machine bearing seat (100). The bottom of the washing machine bearing seat (100) is flat and contacts the upper surface of the detection platform (2). An adjustable fixed bracket (4) is also provided on the base (1). The fixed bracket (4) is connected to a lever gauge (6) through a movable bracket (5). The lower part of the lever gauge (6) is a detection contact (7) for contacting the inner side of the bearing hole of the washing machine bearing seat (100). The movable bracket (5) is rotatably connected to the fixed bracket (4) so ​​that the detection contact (7) can approach or move away from the inner side of the bearing hole of the washing machine bearing seat (100).

2. The coaxiality inspection fixture compatible with bearing housings of multiple washing machines according to claim 1, characterized in that, The movable support (5) is provided with a fine adjustment component, which includes a fine adjustment lever (8), a fine adjustment pin (9) and a return spring (10). The fine adjustment lever (8) is rotatably connected to the movable support (5) through a lever shaft (11), and the movable support (5) is connected to the lever gauge (6) through the fine adjustment lever (8). The fine adjustment pin (9) is threadedly connected to the movable support (5), and the end of the fine adjustment pin (9) abuts against the fine adjustment lever (8). The return spring (10) abuts against or is connected to the fine adjustment lever (8) so that the fine adjustment pin (9) and the return spring (10) can apply opposite forces to the fine adjustment lever (8).

3. The coaxiality gauge compatible with bearing housings of multiple washing machines according to claim 2, characterized in that, The upper part of the movable bracket (5) is provided with a receiving groove (12), the fine adjustment lever (8) is set in the receiving groove (12), and the lever shaft (11) is located in the middle of the receiving groove (12); the movable bracket (5) has a threaded hole on the side away from the lever gauge (6) that runs from the bottom of the movable bracket (5) to the receiving groove (12), the fine adjustment pin (9) passes through the threaded hole from bottom to top and is threadedly connected to the threaded hole, the upper end of the fine adjustment pin (9) abuts against the lower surface of the end of the fine adjustment lever (8) away from the lever gauge (6); the end of the fine adjustment lever (8) connected to the lever gauge (6) extends to the outside of the movable bracket (5); the return spring (10) is a compression spring, the return spring (10) is located in the receiving groove (12) on the side close to the lever gauge (6), the upper end of the return spring (10) abuts against the fine adjustment lever (8), and the lower end of the return spring (10) abuts against the bottom surface of the receiving groove (12).

4. The coaxiality gauge compatible with bearing housings of multiple washing machines according to any one of claims 1 to 3, characterized in that, The fixed bracket (4) includes a vertically arranged vertical rod (13) and a horizontally arranged horizontal rod (14); a vertical sleeve (15) is fixedly arranged on the base (1), and the lower end of the vertical rod (13) is slidably inserted into the sleeve (15); a through first set screw hole is opened on the side of the sleeve (15) and a first set screw (16) is threadedly connected to it, and the end of the first set screw (16) located inside the sleeve (15) abuts against the side of the vertical rod (13); the horizontal rod (14) is connected to the upper part of the vertical rod (13), and the end of the horizontal rod (14) away from the vertical rod (13) is rotatably connected to the end of the movable bracket (5) away from the lever (6) through a movable pivot (17).

5. The coaxiality inspection tool compatible with bearing housings of multiple washing machines according to claim 4, characterized in that, The upper part of the vertical rod (13) is provided with a through horizontal adjustment hole (18), and the end of the horizontal rod (14) away from the lever (6) can slide through the horizontal adjustment hole (18); the upper surface of the vertical rod (13) is provided with a through second set screw hole and a second set screw (19) is threadedly connected, and the end of the second set screw (19) located in the horizontal adjustment hole (18) abuts against the upper surface of the horizontal rod (14).

6. The coaxiality inspection tool compatible with bearing housings of multiple washing machines according to claim 4, characterized in that, A rotating connection groove is provided at the end of the horizontal bar (14) away from the vertical bar (13). The bottom of the rotating connection groove forms a limiting baffle (20). The two side walls of the rotating connection groove are respectively connected to the two ends of the movable rotating shaft (17). In the state of testing, the movable bracket (5) is placed horizontally and the lower surface of the movable bracket (5) abuts against the upper surface of the limiting baffle (20).

7. The coaxiality inspection tool compatible with bearing housings of multiple washing machines according to claim 6, characterized in that, A counterweight (21) and / or an operating handle are connected to the top of the movable support (5).

8. The coaxiality gauge compatible with bearing housings of multiple washing machines according to any one of claims 1 to 3, characterized in that, Both the base (1) and the testing platform (2) are flat. The testing platform (2) is located at one end of the length direction of the base (1), and the fixed bracket (4) is connected to the other end of the length direction of the base (1). An inclined support (22) extending downward is provided at either end of the length direction of the base (1) so that the upper surface of the base (1) and the testing platform (2) is placed at an inclination relative to the horizontal plane. Both support columns (3) are located on the side of the upper surface of the testing platform (2) that is biased towards the inclined support (22).

9. The coaxiality inspection tool compatible with bearing housings of multiple washing machines according to claim 8, characterized in that, The coaxiality gauge for the bearing housing compatible with multiple models of washing machines has a symmetrical structure in the width direction of the base (1).

10. The coaxiality gauge compatible with bearing housings of multiple washing machines according to any one of claims 1 to 3, characterized in that, The testing platform (2) has multiple grooves (23) on its upper surface, and the upper surface of the testing platform (2) outside the grooves (23) is a plane for placing the washing machine bearing seat (100).

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