Bearing height measuring device

Abstract

The invention discloses a bearing height measuring device, the bearing height measuring device adopts a clamping mechanism, automatic clamping and loosening of a bearing can be realized, manual operation is not needed, the measuring efficiency and safety are improved, the clamping mechanism utilizes an air bag and a clamping pad to apply uniform pressure to the bearing, the deformation and damage of the bearing are avoided, and the bearing height measuring device is simple in structure and convenient to use. The measuring accuracy is guaranteed, the concave arc-shaped structure of the clamping pad can adapt to bearings with different diameters, the universality of the measuring device is improved, the measuring mechanism is adopted, the measuring mechanism achieves double detection on the bearings through a distance measuring sensor and scale marks, the measuring device can adapt to the bearings with different heights through the arrangement of the adjusting piece, and the measuring accuracy is improved. The applicability of the measuring device to bearings with different heights is increased, the reading of a measuring result is facilitated, the measuring mechanism also utilizes a movable part and a spring to automatically reset the distance measuring sensor, interference in the measuring process is avoided, and the measuring stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a bearing height measuring device. Background Art

[0002] Bearings are mechanical components used to support rotating shafts or reduce friction, and are widely used in various mechanical equipment. Bearing height is the axial thickness of the bearing. The greater the height, the greater the bearing's load capacity. The height of the bearing directly affects the bearing's load capacity, stiffness, and life, so accurate measurement of the bearing's height is an important part of ensuring bearing quality and performance.

[0003] At present, the commonly used bearing height measuring devices are as follows: One is to use manual measuring tools such as micrometers or vernier calipers to place the bearing on a platform, then measure the end face heights of the inner and outer rings of the bearing respectively, and then subtract them to get the height of the bearing. This measurement method is simple to operate, but has low measurement accuracy, is easily affected by human errors and bearing tilt, and has low measurement efficiency, making it unsuitable for batch measurement.

[0004] The other is to use automatic measuring devices such as photoelectric sensors or capacitive sensors, place the bearing on a measuring table, and then use the sensor to scan the end faces of the inner and outer rings of the bearing, and then obtain the height of the bearing through circuit or computer processing. This measurement method has high measurement accuracy and can be automated and digitized, but the measurement device is complex and costly, and has high requirements for the placement and posture of the bearing, otherwise it will affect the accuracy of the measurement results.

[0005] Therefore, there is still a need for a simple, efficient and accurate bearing height measuring device. Summary of the invention

[0006] The object of the present invention is to provide a bearing height measuring device to solve the problems existing in the existing bearing height measuring devices mentioned in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a bearing height measuring device, comprising a base, a clamping mechanism and a measuring mechanism; The bottom of the base is fixedly connected with four groups of support pads in a regular matrix, the top front side of the base is fixedly connected with an assembly table, and the top rear side of the base is fixedly connected with a frame; The clamping mechanism is arranged on the assembly table, and the clamping mechanism is suitable for clamping the bearing; The measuring mechanism is arranged on a frame, and is suitable for measuring bearings.

[0008] Preferably, the clamping mechanism comprises a placement groove, an annular built-in tube, several groups of connecting channels, several groups of air bags, an inflation air pump, an exhaust air pump and several groups of clamping pads, wherein: The placement slot is opened in the assembly table; The annular internal pipe is fixed to the inner side of the assembly table; A plurality of groups of connecting channels are opened in a regular annular array between the inner wall of the placement groove and the annular built-in tube; A plurality of groups of air bags are respectively arranged in a plurality of groups of connecting channels, and the air bags are connected with the annular built-in tubes; The air pump is fixedly arranged on the inner side of the assembly platform, and the output end of the air pump is connected with the annular built-in pipe through a pipeline; The air pump is fixedly arranged inside the assembly platform, and the input end of the air pump is connected with the annular built-in pipe through a pipeline; A plurality of groups of clamping pads are movably arranged in a plurality of groups of connecting channels respectively, and the clamping pads are fixedly connected to a side of the airbag away from the annular built-in tube.

[0009] Preferably, the clamping pad has a concave arc structure on the side away from the annular inner tube.

[0010] Preferably, the measuring mechanism comprises an outer cylinder, a fixed cylinder, an upper fixed ring, a lower fixed ring, a movable part, a lifting rod, a top frame, a distance measuring sensor, an adjusting part and a scale mark, wherein: The outer cylinder is fixedly connected to the inner side of the frame; The fixing tube is fixedly connected to the top of the base. The upper fixing ring is fixedly connected to the inner wall surface of the upper end of the outer cylinder, and the upper fixing ring is fixedly connected to the inner top surface of the frame; The lower fixing ring is fixedly connected to the inner wall surface of the lower end of the outer cylinder; The movable parts are movably connected and inserted into the top of the frame, the upper fixed ring, the lower fixed ring, and the fixed cylinder; The lifting rod is movably connected to the top of the frame; The top frame is fixedly connected to the movable part and the top of the lifting rod; The distance measuring sensor is fixedly connected to the bottom of the lifting rod; The adjusting member is fixedly connected to the bottom of the distance measuring sensor; The scale mark is arranged on the surface of the lifting rod.

[0011] Preferably, the movable part includes an upper rod, a lower rod and a limit block, which are integrally connected in sequence from top to bottom, the upper rod is connected to the inner side of the upper fixing ring with a clearance fit, the lower rod is connected to the lower fixing ring and the top of the fixing tube with a clearance fit, and the limit block is movably arranged on the inner side of the fixing tube.

[0012] Preferably, the diameter length of the limit block is greater than the top inner diameter length of the fixed cylinder.

[0013] Preferably, the measuring mechanism further comprises a spring, wherein the spring is fixedly connected between the upper fixing ring and the lower rod, and the upper rod is inserted and connected to the inner side of the spring.

[0014] Preferably, the adjusting member comprises a threaded sleeve, a threaded rod and a bottom block, the surface of the threaded rod is connected to the inner side of the threaded sleeve through a threaded structure, and the bottom block is fixedly connected to the bottom of the threaded rod.

[0015] Preferably, the measuring mechanism further comprises a rotating sleeve, a control handle and an L-shaped groove, wherein: The rotating sleeve is arranged on the surface of the lower rod; The control handle is fixedly connected to the rotating sleeve; An L-shaped groove is formed through the surface of the outer tube, and the control handle is movably connected to the L-shaped groove.

[0016] Preferably, the L-shaped groove includes a transverse groove and a vertical groove, the transverse groove and the vertical groove are arranged perpendicularly to each other, and the diameter length of the control handle close to the rotating sleeve is adapted to the height of the transverse groove and the width of the vertical groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The bearing height measuring device adopts a clamping mechanism, which can realize automatic clamping and loosening of the bearing without manual operation, thus improving the measurement efficiency and safety. The clamping mechanism uses airbags and clamping pads to apply uniform pressure to the bearing, thus avoiding deformation and damage of the bearing and ensuring the accuracy of the measurement. The concave arc structure of the clamping pad can adapt to bearings of different diameters, thus increasing the versatility of the measuring device. 2. The bearing height measuring device adopts a measuring mechanism, which can realize direct measurement of the bearing height and simplify the measurement process. The measuring mechanism uses a distance sensor and a scale mark to realize dual detection of the bearing. Through the setting of the adjustment part, it can adapt to bearings of different heights, increase the applicability of the measuring device to bearings of different heights, and facilitate the reading of the measurement results. The measuring mechanism also uses a movable part and a spring to automatically reset the distance sensor, avoiding interference during the measurement process and improving the stability of the measurement; 3. The bearing height measuring device adopts a structure of a rotating sleeve, a control handle and an L-shaped groove, which can realize convenient control of the measuring mechanism. The horizontal groove and the vertical groove of the L-shaped groove are arranged perpendicularly to each other, which can limit the movement of the control handle and ensure the safety of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a bearing height measuring device of the present invention; Figure 2 A top view of the structure of an assembly platform of a bearing height measuring device of the present invention; Figure 3 A top view of an assembly platform of a bearing height measuring device of the present invention before the bearing is installed; Figure 4 A top view of an assembly platform of a bearing height measuring device of the present invention after a bearing is installed; Figure 5 A front view of an outer cylinder of a bearing height measuring device of the present invention; Figure 6 This is a schematic diagram of the structure of a bearing height measuring device of the present invention after the outer cylinder is removed; Figure 7 A partial front structural cross-sectional view of a bearing height measuring device of the present invention; Figure 8 A front structural cross-sectional view of an adjusting member of a bearing height measuring device of the present invention; Fig. 9 The figure is a side view of a lifting rod of a bearing height measuring device of the present invention.

[0019] In the figure: 1. Base; 11. Support pad; 12. Assembly table; 13. Frame; 2. Clamping mechanism; 21. Placement slot; 22. Annular built-in tube; 23. Connection channel; 24. air bag; 25. inflating air pump; 26. exhausting air pump; 27. clamping pad; 3. Measuring mechanism; 301. Outer cylinder; 302. Fixed cylinder; 303. Upper fixed ring; 304, lower fixed ring; 305, movable part; 3051, upper rod; 3052, lower rod; 3053, limit block; 306, lifting rod; 307, top frame; 308, distance sensor; 309, adjusting member; 3091, threaded sleeve; 3092, threaded rod; 3093, bottom block; 310, scale mark; 311, spring; 312, rotating sleeve; 313, control handle; 314, L-shaped groove; 3141, horizontal groove; 3142, vertical groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-9 The present invention provides a technical solution: a bearing height measuring device, comprising a base 1, a clamping mechanism 2 and a measuring mechanism 3.

[0024] The bottom of the base 1 is fixedly connected with four groups of support pads 11 in a regular matrix, the top front side of the base 1 is fixedly connected with an assembly table 12, and the top rear side of the base 1 is fixedly connected with a frame 13.

[0025] The clamping mechanism 2 is disposed on the assembly table 12 , and the clamping mechanism 2 is suitable for clamping the bearing.

[0026] The clamping mechanism 2 includes a placement groove 21, an annular internal tube 22, a plurality of connecting channels 23, a plurality of air bags 24, an inflating air pump 25, an exhausting air pump 26 and a plurality of clamping pads 27, wherein: The placement slot 21 is opened in the assembly table 12; The annular inner tube 22 is fixed to the inner side of the assembly platform 12; A plurality of connecting channels 23 are provided in a regular annular array between the inner wall of the placement groove 21 and the annular internal pipe 22; A plurality of groups of air bags 24 are respectively arranged in a plurality of groups of connecting channels 23, and the air bags 24 are connected with the annular built-in tubes 22; The air pump 25 is fixedly arranged inside the assembly platform 12, and the output end of the air pump 25 is connected to the annular internal pipe 22 through a pipeline; The air pump 26 is fixedly arranged inside the assembly platform 12, and the input end of the air pump 26 is connected to the annular internal pipe 22 through a pipeline; A plurality of groups of clamping pads 27 are movably disposed in the plurality of groups of connecting channels 23 , respectively, and the clamping pads 27 are fixedly connected to a side of the airbag 24 away from the annular inner tube 22 .

[0027] For details, please refer to the attached manual. Figure 2 The annular internal tube 22 and the plurality of air bags 24 can be inflated by the air pump 25. Figure 4 When in use, the bearing to be measured can be placed in the placement groove 21 so that the bottom of the bearing to be measured contacts the top of the base 1. After several groups of airbags 24 are inflated, the airbags 24 expand and push the clamping pad 27 toward one side of the placement groove 21 until the clamping pad 27 is tightly pressed against the outer surface of the bearing to be measured, thereby clamping and fixing the bearing to be measured. Figure 3 The annular built-in tube 22 and the plurality of airbags 24 can be evacuated by the air pump 26, so that the plurality of airbags 24 shrink, thereby driving the clamping pad 27 to move into the connecting channel 23, and the clamping pad 27 is separated from the contact with the bearing to be measured, and the bearing to be measured can be taken out at this time.

[0028] The side of the clamping pad 27 away from the annular built-in tube 22 is a concave arc structure. Specifically, the clamping pad 27 is made of rubber material, and the clamping pad 27 has a certain deformation ability. After the several groups of airbags 24 are inflated, the several groups of clamping pads 27 can be pressed tightly against the surface of the bearing to be measured, so as to clamp and fix the bearing to be measured, and the arc-shaped side of the clamping pad 27 is more closely matched with the shape of the bearing surface, which improves the stability when clamping the bearing, can adapt to bearings of different diameters, and improves the accuracy of measurement.

[0029] Specifically, the clamping mechanism 2 can realize automatic clamping and loosening of the bearing to be measured without manual operation, thereby improving the measurement efficiency and safety. The clamping mechanism 2 uses the airbag 24 and the clamping pad 27 to apply uniform pressure to the bearing to be measured, thereby avoiding deformation and damage of the bearing and ensuring the accuracy of the measurement. The concave arc structure of the clamping pad 27 can adapt to bearings of different diameters, thereby increasing the versatility of the measuring device.

[0030] The measuring mechanism 3 is arranged on the frame 13 , and the measuring mechanism 3 is suitable for measuring the bearing.

[0031] The measuring mechanism 3 includes an outer cylinder 301, a fixed cylinder 302, an upper fixed ring 303, a lower fixed ring 304, a movable part 305, a lifting rod 306, a top frame 307, a distance sensor 308, an adjusting part 309 and a scale mark 310, wherein: The outer cylinder 301 is fixedly connected to the inner side of the frame 13; The fixing tube 302 is fixedly connected to the top of the base 1. The upper fixing ring 303 is fixedly connected to the inner wall surface of the upper end of the outer cylinder 301, and the upper fixing ring 303 is fixedly connected to the inner top surface of the frame 13; The lower fixing ring 304 is fixedly connected to the inner wall surface of the lower end of the outer cylinder 301; The movable member 305 is movably connected and inserted into the top of the frame 13, the upper fixing ring 303, the lower fixing ring 304, and the fixing cylinder 302; The lifting rod 306 is movably connected to the top of the frame 13; The top frame 307 is fixedly connected to the top of the movable member 305 and the lifting rod 306; The distance measuring sensor 308 is fixedly connected to the bottom of the lifting rod 306; The adjusting member 309 is fixedly connected to the bottom of the distance measuring sensor 308; The scale mark 310 is disposed on the surface of the lifting rod 306 .

[0032] Specifically, the top and bottom of the outer cylinder 301 are both open structures, the top of the fixed cylinder 302 is an open structure, the lifting rod 306 is connected to the top of the frame 13 with a clearance fit, and the output end and receiving end of the ranging sensor 308 and the adjustment member 309 all correspond to the upper and lower positions of the placement slot 21.

[0033] The movable member 305 includes an upper rod 3051, a lower rod 3052 and a stopper 3053, which are connected in sequence from top to bottom, the upper rod 3051 is connected to the inner side of the upper fixing ring 303 with clearance, the lower rod 3052 is connected to the lower fixing ring 304 and the top of the fixing tube 302 with clearance, and the stopper 3053 is movably arranged on the inner side of the fixing tube 302. Specifically, the upper fixing ring 303 has a positioning function for the upper rod 3051, and the lower fixing ring 304 and the fixing tube 302 have a positioning function for the lower rod 3052, thereby improving the stability of the measurement.

[0034] The diameter length of the stopper 3053 is greater than the top inner diameter length of the fixed cylinder 302. Specifically, this can prevent the movable member 305 from coming out of the fixed cylinder 302, thereby ensuring the safety of the measurement.

[0035] The measuring mechanism 3 further includes a spring 311, which is fixedly connected between the upper fixing ring 303 and the lower rod 3052, and the upper rod 3051 is inserted and connected to the inner side of the spring 311. Specifically, the movable member 305, the top frame 307 and the lifting rod 306 move synchronously, and the spring 311 has a synchronous elastic force on the movable member 305, the top frame 307 and the lifting rod 306. The spring 311 can apply a restoring force to the movable member 305, the top frame 307 and the lifting rod 306, so that the movable member 305 automatically resets to the initial position after the measurement is completed, and at the same time, it can be pressed against the top of the bearing to be measured through the adjusting member 309, thereby reducing repeated measurement operations.

[0036] The adjusting member 309 includes a threaded sleeve 3091, a threaded rod 3092 and a bottom block 3093. The surface of the threaded rod 3092 is connected to the inner side of the threaded sleeve 3091 through a threaded structure, and the bottom block 3093 is fixedly connected to the bottom of the threaded rod 3092. Specifically, the bottom block 3093 can be used to contact the bearing to be measured, and the overall length of the adjusting member 309 can be adjusted by rotating the threaded rod 3092, so that the bottom block 3093 maintains appropriate contact with the outer ring end face of the bearing to ensure the measurement accuracy.

[0037] The measuring mechanism 3 further includes a rotating sleeve 312, a control handle 313 and an L-shaped groove 314, wherein: The rotating sleeve 312 is movably mounted on the surface of the lower rod 3052; The control handle 313 is fixedly connected to the rotating sleeve 312; The L-shaped groove 314 is formed through the surface of the outer tube 301 , and the control handle 313 is movably connected in the L-shaped groove 314 .

[0038] Specifically, the movable member 305 can be conveniently controlled by the control handle 313 . The rotating sleeve 312 is an annular structure, and a corresponding annular inner groove is provided on the surface of the lower rod 3052 to which the rotating sleeve 312 is connected.

[0039] The L-shaped groove 314 includes a transverse groove 3141 and a vertical groove 3142 . The transverse groove 3141 and the vertical groove 3142 are arranged perpendicularly to each other. The diameter length of the control handle 313 close to the rotating sleeve 312 is adapted to the height of the transverse groove 3141 and the width of the vertical groove 3142 . Specifically, the control handle 313 can move vertically through the vertical slot 3142, thereby driving the movable part 305, the top frame 307, the lifting rod 306, the distance sensor 308, and the adjusting part 309 to perform lifting and lowering movements. When the control handle 313 moves to the uppermost end of the vertical slot 3142, the control handle 313 can be controlled to move into the horizontal slot 3141 by rotating the rotating sleeve 312. The elastic effect of the spring 311 on the movable part 305 makes the control handle 313 stably connected to the horizontal slot 3141, which can prevent the control handle 313 from entering the vertical slot 3142. Through the setting of the L-shaped slot 314, the moving range of the control handle 313 can be limited, so that the height of the measuring mechanism 3 can be changed within a certain range to adapt to bearings of different heights and protect the integrity of the measuring mechanism 3 and the bearings.

[0040] Specifically, when in use, the adjusting member 309 can be properly adjusted first, and the bottom block 3093 can be controlled to move into the placement groove 21 by operating the handle 313, so that the bottom of the bottom block 3093 contacts the top of the base 1. At this time, the scale corresponding to the scale mark 310 and the first data on the distance sensor 308 are recorded, and then the distance sensor 308 and the adjusting member 309 are controlled to rise by the operating handle 313, and the operating handle 313 is controlled to be connected to the transverse groove 3141 to temporarily fix the positions of the distance sensor 308 and the adjusting member 309. Then, the bearing to be measured is placed in the placement groove 21. After the bearing is fixed by the clamping mechanism 2, the distance sensor 308 and the adjusting member 309 are controlled to descend by the operating handle 313 until the bottom of the bottom block 3093 contacts the top of the bearing. At this time, the scale corresponding to the scale mark 310 and the second data on the distance sensor 308 are recorded, and the height of the bearing is calculated by the difference between the two measurement data of the scale mark 310 and the difference between the two data of the distance sensor 308.

[0041] Specifically, the bearing height measuring device can realize direct measurement of the height of the bearing, simplifying the measurement process. The measuring mechanism 3 uses the distance sensor 308 and the scale mark 310 to realize dual detection of the bearing. Through the setting of the adjustment member 305, it can adapt to bearings of different heights, increasing the applicability of the measuring device to bearings of different heights and facilitating the reading of measurement results. The measuring mechanism 3 also uses the movable member 309 and the spring 311 for automatic reset, avoiding interference during the measurement process and improving the stability of the measurement.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing height measuring device, characterized in that: It comprises a base (1), a clamping mechanism (2) and a measuring mechanism (3); The bottom of the base (1) is fixedly connected to four groups of support pads (11) in a regular matrix, the top front side of the base (1) is fixedly connected to an assembly table (12), and the top rear side of the base (1) is fixedly connected to a frame (13); The clamping mechanism (2) is arranged on an assembly table (12), and the clamping mechanism (2) is suitable for clamping a bearing; The measuring mechanism (3) is arranged on a frame (13), and the measuring mechanism (3) is suitable for measuring bearings.

2. A bearing height measuring device according to claim 1, characterized in that: The clamping mechanism (2) comprises a placement groove (21), an annular internal tube (22), a plurality of groups of connecting channels (23), a plurality of groups of air bags (24), an inflation air pump (25), an exhaust air pump (26), and a plurality of groups of clamping pads (27), wherein: The placement groove (21) is provided in the assembly table (12); The annular inner tube (22) is fixed to the inner side of the assembly platform (12); A plurality of groups of connecting channels (23) are provided in a regular annular array between the inner wall of the placement groove (21) and the annular built-in tube (22); A plurality of groups of air bags (24) are respectively arranged in a plurality of groups of connecting channels (23), and the air bags (24) are connected to the annular built-in tubes (22); The inflation air pump (25) is fixedly arranged inside the assembly platform (12), and the output end of the inflation air pump (25) is connected to the annular built-in pipe (22) through a pipeline; The air extraction pump (26) is fixedly arranged inside the assembly platform (12), and the input end of the air extraction pump (26) is connected to the annular built-in pipe (22) through a pipeline; A plurality of groups of clamping pads (27) are movably disposed in the plurality of groups of connecting channels (23), respectively, and the clamping pads (27) are fixedly connected to a side of the airbag (24) away from the annular built-in tube (22).

3. A bearing height measuring device according to claim 2, characterized in that: The side of the clamping pad (27) away from the annular built-in tube (22) is an inwardly concave arc-shaped structure.

4. A bearing height measuring device according to claim 1, characterized in that: The measuring mechanism (3) comprises an outer cylinder (301), a fixed cylinder (302), an upper fixed ring (303), a lower fixed ring (304), a movable part (305), a lifting rod (306), a top frame (307), a distance measuring sensor (308), an adjusting part (309) and a scale mark (310), wherein: The outer cylinder (301) is fixedly connected to the inner side of the frame (13); The fixing cylinder (302) is fixedly connected to the top of the base (1). The upper fixing ring (303) is fixedly connected to the inner wall surface of the upper end of the outer cylinder (301), and the upper fixing ring (303) is fixedly connected to the inner top surface of the frame (13); The lower fixing ring (304) is fixedly connected to the inner wall surface of the lower end of the outer cylinder (301); The movable member (305) is movably connected and inserted into the top of the frame (13), the upper fixing ring (303), the lower fixing ring (304), and the fixing cylinder (302); The lifting rod (306) is movably connected to the top of the frame (13); The top frame (307) is fixedly connected to the movable member (305) and the top of the lifting rod (306); The distance measuring sensor (308) is fixedly connected to the bottom of the lifting rod (306); The adjusting member (309) is fixedly connected to the bottom of the distance measuring sensor (308); A scale mark (310) is arranged on the surface of the lifting rod (306).

5. A bearing height measuring device according to claim 4, characterized in that: The movable member (305) comprises an upper rod (3051), a lower rod (3052) and a limit block (3053), wherein the upper rod (3051), the lower rod (3052) and the limit block (3053) are integrally connected in sequence from top to bottom, the upper rod (3051) is connected to the inner side of the upper fixing ring (303) with clearance fit, the lower rod (3052) is connected to the lower fixing ring (304) and the top of the fixing tube (302) with clearance fit, and the limit block (3053) is movably arranged on the inner side of the fixing tube (302).

6. A bearing height measuring device according to claim 5, characterized in that: The diameter length of the limiting block (3053) is greater than the top inner diameter length of the fixed cylinder (302).

7. A bearing height measuring device according to claim 5, characterized in that: The measuring mechanism (3) further comprises a spring (311), wherein the spring (311) is fixedly connected between the upper fixing ring (303) and the lower rod (3052), and the upper rod (3051) is inserted and connected to the inner side of the spring (311).

8. A bearing height measuring device according to claim 4, characterized in that: The adjusting member (309) comprises a threaded sleeve (3091), a threaded rod (3092) and a bottom block (3093); the surface of the threaded rod (3092) is connected to the inner side of the threaded sleeve (3091) via a threaded structure, and the bottom block (3093) is fixedly connected to the bottom of the threaded rod (3092).

9. A bearing height measuring device according to claim 5, characterized in that: The measuring mechanism (3) further comprises a rotating sleeve (312), a control handle (313) and an L-shaped groove (314), wherein: The rotating sleeve (312) is movably sleeved on the surface of the lower rod (3052); The control handle (313) is fixedly connected to the rotating sleeve (312); An L-shaped groove (314) is formed through the surface of the outer cylinder (301), and the control handle (313) is movably connected to the L-shaped groove (314).

10. A bearing height measuring device according to claim 9, characterized in that: The L-shaped groove (314) comprises a transverse groove (3141) and a vertical groove (3142), the transverse groove (3141) and the vertical groove (3142) are arranged perpendicularly to each other, and the diameter length of the side of the control handle (313) close to the rotating sleeve (312) is adapted to the height of the transverse groove (3141) and the width of the vertical groove (3142).

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