Bearing size measuring device

Abstract

The utility model provides a bearing dimension measuring device, which belongs to the technical field of bearing measuring equipment and comprises an outer diameter measuring groove arranged on one side of a measuring table, an inner diameter detecting beam arranged on the upper portion of the measuring table, an opening arranged on the inner diameter detecting beam in a penetrating mode, and a pair of sliding rods arranged in the opening. The side, away from the measuring table, of the surface of the outer diameter measuring groove is provided with outer diameter scale marks, a movable rod is arranged in the outer diameter measuring groove in the axial direction of the outer diameter measuring groove, an outer diameter measuring block is arranged on the movable rod in a sliding mode, a positioning plate is arranged on the side, close to the measuring table, of the outer diameter measuring block, and an outer diameter pointer is arranged on the side, away from the measuring table, of the outer diameter measuring block. According to the utility model, the outer diameter measuring groove is matched with the baffle plate, so that the outer diameter size is obtained, the first inner measuring jaw and the second inner measuring jaw move in opposite directions, the inner ring of the bearing is positioned, the numerical value between the first pointer and the second pointer is read, and the inner diameter size is obtained, so that the inner diameter and the outer diameter of the bearing are measured synchronously; and the measurement efficiency can also be improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing measuring equipment technology, specifically to a bearing size measuring device. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical bodies, reduce the coefficient of friction during their movement, and ensure their rotational accuracy. The main function of bearings is basically support. The size of bearings has evolved from a few initial models to hundreds of models now. In order to facilitate the classification of bearings, a bearing measuring device is needed.

[0003] In most related technologies, personnel measure the inner and outer diameters of bearings separately using vernier calipers to obtain numerical values. The measurement results are significantly affected by factors such as the operator's skill level, measurement method, and reading habits. Different people using vernier calipers to measure the same bearing may obtain different results. Each measurement requires manual operation of the calipers for alignment and reading, which is relatively inefficient for measuring a large number of bearings. Furthermore, it cannot simultaneously measure the outer and inner diameters of the bearing, resulting in low efficiency during batch inspections. To address these issues, a bearing dimension measuring device is proposed. Utility Model Content

[0004] In view of this, the present invention provides a bearing size measuring device. The present invention uses an outer diameter measuring block to drive a positioning plate to move, thereby fixing the bearing with a baffle. The outer diameter size is obtained by reading the outer diameter pointer. Then, by moving the first threaded screw and the second threaded screw in opposite directions, the first pointer and the second pointer move in opposite directions, and the first inner measuring jaw and the second inner measuring jaw move in opposite directions, thereby positioning the inner ring of the bearing. The value between the first pointer and the second pointer is read to obtain the inner diameter size. Thus, the inner diameter and outer diameter of the bearing are measured simultaneously, which can also improve the measurement efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a bearing size measuring device, including a baffle plate at the rear of the measuring platform, an outer diameter measuring groove on one side of the measuring platform, an inner diameter detection beam at the upper part of the measuring platform, an opening through the inner diameter detection beam, a pair of sliding rods inside the opening, a first lifting rod at the lower part of one end of the inner diameter detection beam, a second lifting rod at the lower part of the other end of the inner diameter detection beam, an outer diameter scale line on the surface of the outer diameter measuring groove away from the measuring platform, a movable rod along its axial direction inside the outer diameter measuring groove, an outer diameter measuring block slidably mounted on the movable rod, a positioning plate on the side of the outer diameter measuring block near the measuring platform, and an outer diameter pointer on the side of the outer diameter measuring block away from the measuring platform.

[0006] A first measuring block is slidably mounted on a slide rod on the side away from the baffle. The first measuring block is used to move a first linkage block and a first measuring plate. A second measuring block is slidably mounted on a slide rod on the side closer to the baffle. The second measuring block is used to move a second linkage block and a second measuring plate. A first linkage block is mounted on the upper part of the first measuring block, and a second linkage block is mounted on the upper part of the second measuring block. A first measuring plate is mounted on the lower part of the first measuring block, and a second measuring plate is mounted on the lower part of the second measuring block. A first pointer is mounted on the upper part of the first linkage block. The first pointer is used to indicate the value on the inner diameter scale line, thereby measuring one radius of the bearing inner ring. A second pointer is mounted on the upper part of the second linkage block. The second pointer is used to indicate the value on the inner diameter scale line, thereby measuring the radius of the other half of the bearing inner ring. The first pointer and the second pointer cooperate to measure the bearing inner ring, with the second pointer being higher than the first pointer.

[0007] A first nut is provided on the side of the first linkage block away from the outer diameter measuring groove. The first nut is used to adjust the distance of the first threaded screw. A second nut is provided on the side of the second linkage block away from the outer diameter measuring groove. The second nut is used to adjust the distance of the second threaded screw. A first threaded screw is provided on the side of the first nut away from the first linkage block. The first threaded screw is used to push the first linkage block to move, thereby driving the first measuring block to move on a slide bar. A second threaded screw is provided on the side of the second nut away from the second linkage block. The second threaded screw is used to push the second linkage block to move, thereby driving the second measuring block to move on another slide bar.

[0008] A knob is provided on one side of the first threaded screw that passes through the inner diameter detection beam, and a knob is provided on the other side of the second threaded screw that passes through the inner diameter detection beam. The knobs are used to facilitate the rotation of the first or second threaded screw.

[0009] The lower part of the first measuring plate is provided with a first internal measuring jaw, which is used to locate one side of the bearing's inner diameter. The lower part of the second measuring plate is provided with a second internal measuring jaw, which is used to locate the other side of the bearing's inner diameter.

[0010] The inner diameter measuring beam has an inner diameter scale line on the side away from the baffle. The inner diameter scale line makes it easy for personnel to read the value between the first inner measuring jaw and the second inner measuring jaw, and thus measure the value of the bearing inner diameter.

[0011] The first lifting rod has a first slide rail at its lower part, which is used for the movement of the first slider. The second lifting rod has a second slide rail at its lower part, which is used for the movement of the second slider. The first slider is slidably disposed inside the first slide rail, which is used to connect the first lifting rod to the first slide rail, so that when the first slider moves, the first lifting rod also moves synchronously. The second slider is slidably disposed inside the second slide rail. The first slider is fixedly connected to the lower part of the first lifting rod, and the second slider is fixedly connected to the lower part of the second lifting rod.

[0012] A first electric push rod is provided on one side of the first slider, which is used to drive the first slider to move and thus push the first lifting rod to move. A second electric push rod is provided on one side of the second slider, which is used to drive the second slider to move and thus push the second lifting rod to move.

[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0014] 1. The outer diameter measuring block drives the positioning plate to move, thereby fixing the bearing with the baffle. The outer diameter dimension is obtained by reading the outer diameter pointer. Then, by moving the first and second threaded screws in opposite directions, the first and second pointers move in opposite directions, and the first and second inner measuring jaws move in opposite directions, thereby positioning the inner ring of the bearing. The value between the first and second pointers is read to obtain the inner diameter dimension. Thus, the inner and outer diameters of the bearing are measured simultaneously, which can also improve measurement efficiency.

[0015] 2. The knob is used to facilitate the rotation of the first or second threaded screw.

[0016] 3. The first slide rail is used to move the first slider. The first slider is used to connect the first lifting rod to the first slide rail, so that when the first slider moves, the first lifting rod also moves synchronously. The second slide rail is used to move the second slider. The second electric push rod is used to drive the second slider to move, thereby pushing the second lifting rod to move. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the assembly structure of this utility model.

[0019] Figure 3 This utility model Figure 1 A partial magnified view

[0020] Figure 4 This is a top view of the structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 100, measuring platform; 101, baffle; 102, outer diameter measuring groove; 200, inner diameter detection beam; 201, opening; 202, slide rod; 203, first measuring block; 204, second measuring block; 205, first linkage block; 206, second linkage block; 207, first measuring plate; 208, second measuring plate; 209, first pointer; 210, second pointer; 211, first nut; 212, second nut; 213, first threaded rod; 214. 215. Second threaded screw; 300. Knob; 301. First lifting rod; 302. Second lifting rod; 303. First slide rail; 304. Second slide rail; 305. First slider; 306. Second slider; 307. First electric push rod; 400. Outer diameter scale line; 401. Movable rod; 402. Outer diameter measuring block; 403. Positioning plate; 404. Outer diameter pointer; 500. First internal measuring jaw; 501. Second internal measuring jaw; 502. Inner diameter scale line. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-4As shown: This embodiment provides a bearing size measuring device, including a baffle 101 at the rear of a measuring platform 100, which is used to block the bearing and prevent it from falling off the measuring platform 100. An outer diameter measuring groove 102 is provided on one side of the measuring platform 100, integrally connected to the measuring platform 100. An inner diameter detection beam 200 is provided on the upper part of the measuring platform 100, with an opening 201 through it, corresponding to the platform surface of the measuring platform 100. A pair of sliding rods 202 are provided inside the opening 201, both of which are embedded in the inner diameter detection beam 200 and rotatably connected to it. A first lifting rod 300 is provided at the lower part of one end of the inner diameter detection beam 200. Both the first and second lifting rods 301 can be electrically operated. The telescopic end of the first lifting rod 300 is bolted to the inner diameter detection beam 200. The lower part of the other end of the inner diameter detection beam 200... A second lifting rod 301 is provided, and its telescopic end is bolted to the inner diameter detection beam 200. An outer diameter scale line 400 is provided on the side of the outer diameter measuring groove 102 away from the measuring platform 100. The outer diameter scale line 400 is integrally connected to the outer measuring groove. A movable rod 401 is provided axially inside the outer diameter measuring groove 102. The movable rod 401 is detachably and rotatably connected to the outer diameter measuring groove 102. An outer diameter... Measuring block 402, outer diameter measuring block 402 is slidably engaged with movable rod 401, positioning plate 403 is provided on the side of outer diameter measuring block 402 near measuring table 100, positioning plate 403 and outer diameter measuring block 402 can be fixed by bolt connection or heat fusion connection, outer diameter pointer 404 is provided on the side of outer diameter measuring block 402 away from measuring table 100, outer diameter pointer 404 is integrally connected with outer diameter measuring block 402, outer diameter pointer 404 and positioning plate 403 are horizontally set.

[0024] In use, the bearing is placed on the measuring table 100, and the outer diameter measuring block 402 is moved, causing it to move on the movable rod 401. This, in turn, moves the positioning plate 403, which then engages with the baffle 101 to clamp the bearing. The outer diameter is then measured by reading the outer diameter pointer 404. Furthermore, by moving the first threaded screw 213 and the second threaded screw 214 in opposite directions, the first threaded screw 213 drives the first measuring block 203 to engage with the second threaded screw 214. The lead screw 214 drives the second measuring block 204 to move in the opposite direction, thereby causing the first pointer 209 and the second pointer 210 to move in opposite directions. The first measuring plate 207 drives the first inner measuring jaw 500 and the second measuring plate 208 to drive the second inner measuring jaw 501 to move in opposite directions. Thus, the first inner measuring jaw 500 and the second inner measuring jaw 501 position the inner ring of the bearing. Then, the value between the first pointer 209 and the second pointer 210 is read, thereby measuring the inner diameter and outer diameter of the bearing simultaneously, which can also improve the measurement efficiency.

[0025] This embodiment provides a bearing dimension measuring device.

[0026] like Figure 1 , 2As shown in Figures 3 and 4: A first measuring block 203 is slidably mounted on the slide rod 202 on the side away from the baffle 101. The first measuring block 203 is used to drive the first linkage block 205 and the first measuring plate 207 to move. The first measuring block 203 and its corresponding slide rod 202 are in sliding engagement. A second measuring block 204 is slidably mounted on the slide rod 202 on the side closer to the baffle 101. The second measuring block 204 and its corresponding slide rod 202 are in sliding engagement. The second measuring block 204 is used to drive the second linkage block 206 and the second measuring plate 207 to move. The measuring plate 208 moves. A first linkage block 205 is provided on the upper part of the first measuring block 203. The first linkage block 205 and the first measuring block 203 can be fixed together by bolts or by heat fusion. A second linkage block 206 is provided on the upper part of the second measuring block 204. The second linkage block 206 and the second measuring block 204 can be fixed together by bolts or by heat fusion. A first measuring plate 207 is provided on the lower part of the first measuring block 203. The first measuring plate 207 and the first measuring block 203 can be fixed together by bolts or by heat fusion. The second measuring block 204 is fixed by heat fusion connection. A second measuring plate 208 is provided at the lower part of the second measuring block 204. The second measuring plate 208 and the second measuring block 204 can be fixed by bolt connection or heat fusion connection. A first pointer 209 is provided at the upper part of the first linkage block 205. Both the first pointer 209 and the second pointer 210 are L-shaped. The first pointer 209 and the first linkage block 205 can be fixed by bolt connection. The first pointer 209 is used to indicate the value on the inner diameter scale line 502, thereby measuring one of the radii of the bearing inner ring. A second pointer 210 is provided on the upper part of the linkage block 206. The second pointer 210 is used to indicate the value on the inner diameter scale line 502. The second pointer 210 and the second linkage block 206 can be fixed by bolt connection. The second pointer 210 is used to indicate the value on the inner diameter scale line 502, thereby measuring the radius of the other half of the bearing inner ring. The first pointer 209 cooperates with the second pointer 210 to measure the diameter of the bearing inner ring. The second pointer 210 is higher than the first pointer 209 and longer than the first pointer 209.

[0027] Its effect is as follows: the first pointer 209 is used to indicate the value on the inner diameter scale line 502, thereby measuring one of the radii of the bearing inner ring; the second pointer 210 is used to indicate the value on the inner diameter scale line 502, thereby measuring the radius of the other half of the bearing inner ring; the first pointer 209 and the second pointer 210 work together to measure the diameter of the bearing inner ring.

[0028] like Figure 1 , 2As shown in Figure 3: A first nut 211 is provided on the side of the first linkage block 205 away from the outer diameter measuring groove 102. The first nut 211 is welded to the first linkage block 205 and is used to adjust the distance of the first threaded screw 213. A second nut 212 is provided on the side of the second linkage block 206 away from the outer diameter measuring groove 102. The second nut 212 is welded to the second linkage block 206 or heat-fused to it. The second nut 212 is used to adjust the distance of the second threaded screw 214. A first nut 211 is provided on the side away from the first linkage block 205. A first threaded screw 213 is provided, which is threadedly engaged with a first nut 211. The first threaded screw 213 is used to push the first linkage block 205 to move, thereby driving the first measuring block 203 to move on a slide bar 202. A second threaded screw 214 is provided on the side of the second nut 212 away from the second linkage block 206. The second threaded screw 214 is threadedly engaged with the second nut 212. The second threaded screw 214 is used to push the second linkage block 206 to move, thereby driving the second measuring block 204 to move on another slide bar 202.

[0029] The effect is as follows: the first nut 211 is used to adjust the distance of the first threaded screw 213, the second nut 212 is used to adjust the distance of the second threaded screw 214, the first threaded screw 213 is used to push the first linkage block 205 to move, thereby driving the first measuring block 203 to move on a slide bar 202, and the second threaded screw 214 is used to push the second linkage block 206 to move, thereby driving the second measuring block 204 to move on another slide bar 202.

[0030] like Figure 1 , 2 As shown: A knob 215 is provided on one side of the first threaded screw 213 that passes through the inner diameter detection beam 200. The first threaded screw 213 is welded to the knob 215. A knob 215 is provided on one side of the second threaded screw 214 that passes through the inner diameter detection beam 200. The second threaded screw 214 is welded to the knob 215. The second threaded screw 214 is longer than the first threaded screw 213. The knob 215 is used to facilitate the rotation of the first threaded screw 213 or the second threaded screw 214.

[0031] Its function is as follows: Knob 215 is used to facilitate the rotation of the first threaded screw 213 or the second threaded screw 214.

[0032] like Figure 2 , 3As shown: A first internal measuring jaw 500 is provided at the lower part of the first measuring plate 207. The first internal measuring jaw 500 is fixed to the first measuring plate 207 by bolts. The first internal measuring jaw 500 is used to locate one side of the bearing's inner diameter. A second internal measuring jaw 501 is provided at the lower part of the second measuring plate 208. The second internal measuring jaw 501 is fixed to the second measuring plate 208 by bolts. The second internal measuring jaw 501 is used to locate the other side of the bearing's inner diameter. An inner diameter scale line 502 is provided on the side of the inner diameter detection beam 200 away from the baffle 101. The inner diameter detection beam 200 and the inner diameter scale line 502 are integrally connected. The accuracy of the inner diameter scale line 502 can be higher than that of the outer diameter scale line 400. The inner diameter scale line 502 makes it convenient for personnel to read the value between the first internal measuring jaw 500 and the second internal measuring jaw 501, thereby measuring the value of the bearing's inner diameter. The first internal measuring jaw 500 and the second internal measuring jaw 501 are in a horizontal state during measurement.

[0033] Its effect is as follows: the first inner measuring jaw 500 is used to locate one side of the bearing inner diameter, the second inner measuring jaw 501 is used to locate the other side of the bearing inner diameter, and the inner diameter scale line 502 makes it convenient for personnel to read the value between the first inner measuring jaw 500 and the second inner measuring jaw 501, thereby measuring the value of the bearing inner diameter.

[0034] like Figure 1 , 2As shown: A first slide rail 302 is provided at the lower part of the first lifting rod 300. The first slide rail 302 can be fixed to the side wall of the outer diameter measuring groove 102 by bolts or welding. The first slide rail 302 is used for the movement of the first slider 304. A second slide rail 303 is provided at the lower part of the second lifting rod 301. The second slide rail 303 can be fixed to the side wall of the measuring table 100 by bolts or welding. The second slide rail 303 is used for the movement of the second slider 305. A first slider 304 is slidably arranged inside the first slide rail 302. The first slider 304 is slidably adapted to the first slide rail 302. The track of the first slide rail 302 is I-shaped. The first slider 304 is used to connect the first lifting rod 300 to the first slide rail 302, so that when the first slider 304 moves, the first lifting rod 300 also moves synchronously. A second slider 305 is slidably provided and is slidably adapted to a second slide rail 303. The track of the second slide rail 303 is I-shaped. A first slider 304 is fixedly connected to the lower part of a first lifting rod 300, and a second slider 305 is fixedly connected to the lower part of a second lifting rod 301. A first electric push rod 306 is provided on one side of the first slider 304. The telescopic end of the first electric push rod 306 is fixedly connected to the first slider 304 by bolts. The first electric push rod 306 is used to drive the first slider 304 to move, thereby pushing the first lifting rod 300 to move. A second electric push rod 307 is provided on one side of the second slider 305. The telescopic end of the second electric push rod 307 is fixedly connected to the second slider 305 by bolts. The second electric push rod 307 is used to drive the second slider 305 to move, thereby pushing the second lifting rod 301 to move.

[0035] The effect is as follows: the first slide rail 302 is used to move the first slider 304, the first slider 304 is used to connect the first lifting rod 300 to the first slide rail 302, so that when the first slider 304 moves, the first lifting rod 300 also moves synchronously; the second slide rail 303 is used to move the second slider 305; and the second electric push rod 307 is used to drive the second slider 305 to move, thereby pushing the second lifting rod 301 to move.

[0036] Working principle: By placing the bearing on the measuring table 100, the outer diameter measuring block 402 is moved, causing it to move on the movable rod 401, which in turn moves the positioning plate 403. The positioning plate 403 then engages with the baffle 101 to clamp the bearing. The outer diameter is measured by reading the outer diameter pointer 404. Furthermore, by moving the first threaded screw 213 and the second threaded screw 214 in opposite directions, the first threaded screw 213 drives the first measuring block 203, and the second threaded screw 214 drives the second measuring block 204 to move in opposite directions. This causes the first pointer 209 and the second pointer 210 to move in opposite directions. The first measuring plate 207 drives the first inner measuring jaw 500 and the second measuring plate 208 to drive the second inner measuring jaw 501 to move in opposite directions. Thus, the first inner measuring jaw 500 and the second inner measuring jaw 501 position the inner ring of the bearing. Then, the value between the first pointer 209 and the second pointer 210 is read, thereby measuring the inner diameter and outer diameter of the bearing simultaneously. The position of the inner diameter detection beam 200 can be adjusted by activating the first electric push rod 306 and the second electric push rod 307, thereby enabling the detection of bearings of different sizes.

[0037] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A bearing dimension measuring device, comprising a baffle (101) disposed at the rear of a measuring platform (100), and an outer diameter measuring groove (102) disposed on one side of the measuring platform (100), characterized in that: The measuring platform (100) is provided with an inner diameter detection beam (200) on its upper part. The inner diameter detection beam (200) has an opening (201) through it. A pair of sliding rods (202) are provided in the opening (201). A first lifting rod (300) is provided at the lower part of one end of the inner diameter detection beam (200), and a second lifting rod (301) is provided at the lower part of the other end of the inner diameter detection beam (200). An outer diameter scale line (400) is provided on the side of the outer diameter measuring groove (102) away from the measuring platform (100). A movable rod (401) is provided along its axial direction in the outer diameter measuring groove (102). An outer diameter measuring block (402) is slidably provided on the movable rod (401). A positioning plate (403) is provided on the side of the outer diameter measuring block (402) close to the measuring platform (100), and an outer diameter pointer (404) is provided on the side of the outer diameter measuring block (402) away from the measuring platform (100).

2. The bearing dimension measuring device as described in claim 1, characterized in that: A first measuring block (203) is slidably disposed on the slide rod (202) on the side away from the baffle (101), and a second measuring block (204) is slidably disposed on the slide rod (202) on the side close to the baffle (101). A first linkage block (205) is disposed on the upper part of the first measuring block (203), and a second linkage block (206) is disposed on the upper part of the second measuring block (204). A first measuring plate (207) is disposed on the lower part of the first measuring block (203), and a second measuring plate (208) is disposed on the lower part of the second measuring block (204). A first pointer (209) is disposed on the upper part of the first linkage block (205), and a second pointer (210) is disposed on the upper part of the second linkage block (206). The second pointer (210) is higher than the first pointer (209).

3. The bearing dimension measuring device as described in claim 2, characterized in that: The first linkage block (205) is provided with a first nut (211) on the side away from the outer diameter measuring groove (102), the second linkage block (206) is provided with a second nut (212) on the side away from the outer diameter measuring groove (102), the first nut (211) is provided with a first threaded rod (213) on the side away from the first linkage block (205), and the second nut (212) is provided with a second threaded rod (214) on the side away from the second linkage block (206).

4. The bearing dimension measuring device as described in claim 3, characterized in that: A knob (215) is provided on one side of the first threaded screw (213) passing through the inner diameter detection beam (200), and the knob (215) is provided on one side of the second threaded screw (214) passing through the inner diameter detection beam (200).

5. The bearing dimension measuring device as described in claim 4, characterized in that: The first measuring plate (207) is provided with a first internal measuring jaw (500) at the lower part, and the second measuring plate (208) is provided with a second internal measuring jaw (501) at the lower part.

6. The bearing dimension measuring device as described in claim 5, characterized in that: The inner diameter detection beam (200) has an inner diameter scale line (502) on the side away from the baffle (101).

7. The bearing dimension measuring device as described in claim 6, characterized in that: The first lifting rod (300) is provided with a first slide rail (302) at its lower part, and the second lifting rod (301) is provided with a second slide rail (303) at its lower part. A first slider (304) is slidably disposed in the first slide rail (302), and a second slider (305) is slidably disposed in the second slide rail (303). The first slider (304) is fixedly connected to the lower part of the first lifting rod (300), and the second slider (305) is fixedly connected to the lower part of the second lifting rod (301).

8. The bearing dimension measuring device as described in claim 7, characterized in that: A first electric push rod (306) is provided on one side of the first slider (304), and a second electric push rod (307) is provided on one side of the second slider (305).

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