Measuring device for measuring axial clearance of gyro motor

Abstract

The invention discloses a measuring device for measuring the axial clearance of a gyro motor. The measuring device comprises a base, a stand column, a supporting cylinder, an insert, a piston, a cylinder cap, a dial indicator, an upper pressing rod, an upper balance weight, a support, a lower pressing rod and a first weight. When the axial clearance is measured, the gyro motor is firstly fixed on the measuring device, then the upper counter weight is installed on the upper pressing rod, the first motor shaft and the second motor shaft of the gyro motor move downwards to the lower limit, and the measuring rod of the dial indicator is adjusted to enable the reading of the dial indicator to be zero. Then the upper counterweight is removed, the first counterweight is arranged on the lower pressing rod in a sleeving mode, the first motor shaft and the second motor shaft of the gyro motor move upwards to the upper limit, the reading number mu1 of the dial indicator is read and recorded, and mu1 is the axial clearance of the gyro motor. Compared with a measuring device and method in the prior art, the measuring device has the advantages that the structure is simple, the number of measuring steps is small, the dial indicator with high measuring precision is utilized, and therefore the measuring device has the advantages of being more accurate in measured value and higher in measuring efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of motor equipment, and in particular to a measuring device for measuring the axial clearance of a gyro motor. Background Art

[0002] The bearings used in gyro motors are end-cap angular contact ball bearings. During the assembly process, this type of bearing needs to apply a certain range of preload along the motor axis according to the actual motor characteristics. The purpose of axial preload loading is to ensure the working contact angle between the steel ball and the inner and outer ring tracks on the one hand, and to control the friction between the steel ball and the inner and outer ring tracks on the other hand. Generally, it is guaranteed by the axial clearance of the bearing, and the axial clearance is required to be between 0.003 and 0.005. In the past, the start-up time and stop time after the gyro motor was installed and adjusted were used to determine whether the motor axial clearance was met, and the axial clearance could not be directly measured. Summary of the invention

[0003] The embodiment of the present application provides a measuring device for measuring the axial clearance of a gyro motor, which can solve the technical problem that the axial clearance of a gyro motor cannot be measured or the measurement accuracy is low compared with the related art in the prior art. The technical solution is as follows:

[0004] A measuring device for measuring the axial clearance of a gyro motor, comprising: a base, a column, a support tube, an insert, a piston, a tube cap, a micrometer, an upper pressure rod, an upper counterweight, a support, a lower pressure rod and a first weight. The column is vertically arranged on the upper surface of the base; the support tube comprises a first cylinder body and a first cylinder bottom located at one end of the first cylinder body; the support tube is fixedly connected to the base with its opening facing downward, the center of the first cylinder bottom has a first through hole, the first cylinder body and the first cylinder bottom have a first avoidance area for facilitating the installation of the gyro motor to be measured, and the first avoidance area is connected to the first through hole; the outer wall of the first cylinder body has an external thread; the insert is fixedly connected in the first cylinder body, and the center of the insert has a second through hole; the piston comprises a cylinder body and an annular boss connected to the upper end of the cylinder body and protruding from the outer side surface of the cylinder body, the cylinder body and the second through hole are slidably matched; the tube cap has a second cylinder body and a second cylinder bottom located at the top end of the second cylinder body, the inner wall of the second cylinder body has an internal thread matching the external thread, the cylinder cap is connected to the support tube Threaded connection; the bottom of the second cylinder has a third through hole with a diameter larger than that of the first motor shaft, and the second cylinder bottom and the second cylinder body are provided with a second avoidance area for installing the gyro motor to be tested, and the second avoidance area is connected to the third through hole; the micrometer is fixed to the column by a fixing frame, and the measuring rod of the micrometer is vertically downward; one end of the upper pressure rod is hinged on the column, and the upper pressure rod can swing in a vertical plane, and the free end of the upper pressure rod is located below the measuring rod and in contact with the measuring rod; the upper counterweight is used to apply pressure to the upper pressure rod; the support is fixedly connected to the base; the middle part of the lower pressure rod is hinged to the support, and one end of the lower pressure rod abuts against the bottom of the piston; the first cylinder body has a third avoidance area for the lower pressure rod to pass through; and a first weight is used to be sleeved on the end of the lower pressure rod away from the support cylinder.

[0005] Optionally, the measuring device further comprises two rod-shaped contacts, each of which has a first spherical head at one end and a mounting hole at the other end; the two rod-shaped contacts are respectively mounted on the first motor shaft and the second motor shaft.

[0006] Optionally, the first motor shaft and the second motor shaft both have external threads, and the mounting hole of the rod-shaped contact is a threaded hole.

[0007] Optionally, the free end of the upper pressure rod has two upper arm plates and a lower arm plate forming a U-shape in a vertical plane; the upper counterweight includes a U-shaped bend and two second weights, the U-shaped bend includes two vertical suspension rods and a connecting rod connecting the two suspension rods, the middle part of the connecting rod is mounted on the lower arm plate, and the two second weights are respectively connected to the lower ends of the two suspension rods.

[0008] Optionally, a limiting groove for limiting the connecting rod is provided on the upper surface of the lower arm plate.

[0009] Optionally, the end of the push-down rod that abuts against the piston has a second spherical head, and the piston is in contact with the spherical head of the push-down rod.

[0010] Optionally, the position where the push-down rod contacts the support has a V-shaped groove opening downward, and the top of the support is wedge-shaped; the top of the support has a limiting portion for limiting the push-down rod.

[0011] Optionally, the end of the upper pressure rod hinged to the column has a fixing plate perpendicular to the upper pressure rod, and a first protective bolt is installed on the fixing plate; and a second protective bolt is provided on the base and located below the lower pressure rod.

[0012] Optionally, a fixed support ring coaxial with the first through hole is provided at the top of the first tube bottom, and the fixed support ring protrudes from the first tube bottom; the measuring device also includes a movable support ring arranged between the top of the gyro motor and the tube cap.

[0013] Optionally, the support cylinder further includes a third cylinder body and a third cylinder bottom located at the top of the third cylinder body, the first cylinder body is connected and communicated with the third cylinder bottom, and the third cylinder body is provided with a fourth avoidance area for the downward pressure rod to pass through.

[0014] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0015] A measuring device for measuring the axial clearance of a gyro motor comprises: a base, a column, a support tube, an insert, a piston, a tube cap, a micrometer, an upper pressure rod, an upper counterweight, a support, a lower pressure rod and a first weight. When the axial clearance of the gyro motor needs to be measured, the tube cap is first removed from the support tube, the gyro motor is vertically placed on the support tube, the first motor shaft is inserted into the first through hole, and the tube cap is screwed to the support tube to fix the gyro motor. The upper counterweight is installed on the upper pressure rod, and downward pressure is applied to the upper pressure rod, so that the first motor shaft and the second motor shaft of the gyro motor move downward at the same time, and the measuring rod of the micrometer is adjusted so that the measuring rod contacts the top surface of the upper pressure rod, and the reading of the micrometer is 0. Then the upper counterweight is removed, and the first weight is set on the end of the lower pressure rod away from the support tube, so that the first motor shaft and the second motor shaft of the gyro motor move upward at the same time, and the reading μ1 of the micrometer is read and recorded, and μ1 is the axial clearance of the gyro motor. Compared with the measuring devices and methods of the related art, the measuring device of the present application has a simple structure, fewer measuring steps, and utilizes a micrometer with high measuring accuracy, so it has the characteristics of more accurate measurement values ​​and higher measurement efficiency.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is the front view of the gyro motor;

[0019] Figure 2 is a stereoscopic diagram of a measuring device for measuring the axial clearance of a gyro motor provided in an embodiment of the present application;

[0020] Figure 3 is a top view of a measuring device for measuring the axial clearance of a gyro motor provided in an embodiment of the present application;

[0021] Figure 4 yes Figure 3 A cross-sectional view of the measuring device at AA;

[0022] Figure 5 yes Figure 3 A cross-sectional view of the measuring device at BB;

[0023] Figure 6 is a stereoscopic diagram of a support cylinder in a measuring device for measuring an axial clearance of a gyro motor provided in an embodiment of the present application;

[0024] Figure 7 is a stereoscopic diagram of a cylinder cap in a measuring device for measuring the axial clearance of a gyro motor provided in an embodiment of the present application;

[0025] Figure 8 It is a cross-sectional view of an upper pressure rod in a measuring device for measuring the axial clearance of a gyro motor provided in an embodiment of the present application.

[0026] Description of Reference Numerals

[0027] 1-base; 2-column; 3-support cylinder; 301-first cylinder; 3011-third avoidance area; 302-first cylinder bottom; 3021-first through hole; 3022-first avoidance area; 3023-fixed support ring; 303-third cylinder; 3031-fourth avoidance area; 304-third cylinder bottom; 4-insert; 401-second through hole; 5-cylinder cap; 501-second cylinder; 502-second cylinder bottom; 503-third through hole; 504-second avoidance area; 6-piston; 601-cylinder; 602-annular boss; 7-micrometer; 701-measuring rod; 8-upper pressure rod; 801-upper arm plate; 802-lower arm plate; 8021-limiting groove; 803-fixed plate; 9-upper counterweight; 901-U-shaped bending frame; 9011-suspender rod; 9012-connecting rod; 902-second weight; 10-support; 1001-limiting part; 11-lower pressure rod; 1101-second spherical head; 1102-V-shaped groove; 12-first weight; 13-rod-shaped contact; 14-first protective bolt; 15-second protective bolt; 163-movable support ring; 17-gyro motor; 1701-first motor shaft; 1702-second motor shaft. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the "upper" and "lower" of the corresponding parts in the use state relative to the direction of gravity, and "inside" and "outside" refer to the "inside" and "outside" relative to the corresponding parts' own contours. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements.

[0030] According to the embodiments of the present application, reference Figures 1 to 5 As shown, the gyro motor 17 has a first motor shaft 1701 and a second motor shaft 1702 that share a common center line.

[0031] According to the embodiments of the present application, reference Figures 2 to 8 As shown, a measuring device for measuring the axial clearance of a gyro motor 17 includes: a base 1, a column 2, a support cylinder 3, an insert 4, a piston 6, a cylinder cap 5, a micrometer 7, an upper pressure rod 8, an upper counterweight 9, a support 10, a lower pressure rod 11 and a first weight 12.

[0032] Among them, reference Figure 2As shown, the column 2 is vertically arranged on the upper surface of the base 1. Figures 2 to 6 As shown, the support tube 3 includes a first tube body 301 and a first tube bottom 302 located at one end of the first tube body 301; the support tube 3 is fixedly connected to the base 1 with its opening facing downward, the center of the first tube bottom 302 has a first through hole 3021, the first tube body 301 and the first tube bottom 302 have a first avoidance area 3022 for easy installation of the gyro motor 17 to be tested, and the first avoidance area 3022 is connected to the first through hole 3021; ​​the outer wall of the first tube body 301 has an external thread;

[0033] refer to Figures 4 to 5 As shown, the insert 4 is fixedly connected to the first cylinder 301, and the center of the insert 4 has a second through hole 401; the piston 6 includes a cylinder 601 and an annular boss 602 connected to the upper end of the cylinder 601 and protruding from the outer side of the cylinder 601, and the cylinder 601 is slidably matched with the second through hole 401.

[0034] refer to Figure 7 As shown, the cylinder cap 5 has a second cylinder body 501 and a second cylinder bottom 502 located at the top of the second cylinder body 501, the inner wall of the second cylinder body 501 has an internal thread matching the external thread, and the cylinder cap 5 is threadedly connected to the support cylinder 3; the second cylinder bottom 502 has a third through hole 503 with a diameter larger than the first motor shaft 1701, and the second cylinder bottom 502 and the second cylinder body 501 are provided with a second avoidance area 504 for installing the gyro motor 17 to be tested, and the second avoidance area 504 is connected to the third through hole 503; the micrometer 7 is fixed to the column 2 by a fixing frame, and the measuring rod 701 of the micrometer 7 is vertically downward.

[0035] One end of the upper pressure rod 8 is hinged on the column 2, and the upper pressure rod 8 can swing in a vertical plane. The free end of the upper pressure rod 8 is located below the measuring rod 701 and contacts the measuring rod 701; the upper counterweight 9 is used to apply pressure to the upper pressure rod 8; the support 10 is fixedly connected to the base 1; the middle part of the lower pressure rod 11 is hinged to the second support 10, and one end of the lower pressure rod 11 abuts against the bottom of the piston 6; the first cylinder 301 has a third avoidance area for the lower pressure rod 11 to pass through; the first weight 12 is used to be mounted on the end of the lower pressure rod 11 away from the support cylinder 3.

[0036] In the above embodiment, when the axial clearance of the gyro motor 17 needs to be measured, the cap 5 is first removed from the support tube 3, and the gyro motor 17 is placed vertically (the motor shaft at the bottom is set as the first motor shaft 1701, and the motor shaft at the top is set as the second motor shaft 1702) on the support tube 3, so that the first motor shaft 1701 is inserted into the first through hole 3021, and the cap 5 is screwed to the support tube 3 to fix the gyro motor 17. The upper counterweight 9 is installed on the upper pressure rod 8, and downward pressure is applied to the upper pressure rod 8, so that the first motor shaft 1701 and the second motor shaft 1702 of the gyro motor 17 move downward at the same time, and the measuring rod 701 of the micrometer 7 is adjusted so that the measuring rod 701 contacts the top surface of the upper pressure rod 8, and the reading of the micrometer 7 is set to 0. Then remove the upper counterweight 9, and sleeve the first weight 12 on the end of the lower pressure rod 11 away from the support tube 3, so that the first motor shaft 1701 and the second motor shaft 1702 of the gyro motor 17 move upward at the same time, read the reading μ of the micrometer 7 and record it, and μ1 is the axial clearance of the gyro motor 17. Compared with the measuring device and method of the related art, the measuring device of the present application has a simple structure, fewer measuring steps, and uses the micrometer 7 with high measuring accuracy, so it has the characteristics of more accurate measuring values ​​and higher measuring efficiency.

[0037] The measuring device of the present application may also adopt other measuring methods, and the present application does not limit this.

[0038] According to the embodiments of the present application, reference Figure 2 , Figure 4 and Figure 5 As shown, in some cases, the length of the first motor shaft 1701 and the second motor shaft 1702 of the gyro motor 17 is not convenient to measure. In order to facilitate the gyro motor 17 to be suitable for the measuring device, the measuring device can also include two rod-shaped contacts 13, each of which has a first spherical head at one end and a mounting hole at the other end; the two rod-shaped contacts 13 are respectively mounted on the first motor shaft 1701 and the second motor shaft 1702. Specifically, the first motor shaft 1701 and the second motor shaft 1702 both have external threads, and the mounting holes of the rod-shaped contacts 13 are threaded holes. The end of the rod-shaped contact 13 that contacts the upper pressure rod 8 or the piston 6 is provided with a first spherical head, which can facilitate concentrated force application. The rod-shaped contact 13 can be threadedly connected to the first motor shaft 1701 and the second motor shaft 1702. The length of the rod-shaped contact 13 can have multiple length specifications. In actual measurement, the experimenter can select a rod-shaped contact 13 of a suitable length according to the specific situation.

[0039] According to the embodiments of the present application, reference Figure 5 and Figure 8As shown, the free end of the upper pressure rod 8 has two upper arm plates 801 and lower arm plates 802 forming a U shape in a vertical plane; the upper counterweight 9 includes a U-shaped bending frame 901 and two second weights 902, the U-shaped bending frame includes two vertical suspension rods 9011 and a connecting rod 9012 connecting the two suspension rods 9011, the middle part of the connecting rod 9012 is mounted on the lower arm plate 802, and the two second weights 902 are respectively connected to the lower ends of the two suspension rods 9011. In this way, the free end of the upper pressure rod 8 can be subjected to more uniform force.

[0040] According to the embodiments of the present application, reference Figure 8 As shown, in order to prevent the bending frame from sliding off the lower arm plate 802 during the measurement process, causing the second weight 902 to fall, the upper surface of the lower arm plate 802 is provided with a limiting groove 8021 for limiting the connecting rod 9012. The limiting groove 8021 can be a semicircular notch with a diameter slightly larger than the connecting rod 9012, and the connecting rod 9012 is located in the limiting groove 8021.

[0041] According to the embodiments of the present application, reference Figure 5 As shown, the end of the push rod 11 that abuts against the piston 6 has a second spherical head 1101, and the piston 6 contacts the spherical head of the push rod 11. The second spherical head 1101 is provided at the end of the push rod 11 to facilitate concentrated force application.

[0042] According to the embodiments of the present application, reference Figure 5 As shown, the lower pressure rod 11 and the support 10 can be hinged by using a hinge shaft and a hinge hole, or can be hinged in other forms. For example, the position where the lower pressure rod 11 contacts the support 10 has a V-shaped groove 1102 that opens downward, and the top of the second support 10 is wedge-shaped, and the angle of the wedge-shaped cross section is smaller than the angle of the V-shaped groove 1102, so that the lower pressure rod 11 has a certain movable space.

[0043] According to the embodiments of the present application, reference Figure 2 As shown, in order to prevent the downward pressing rod 11 from sliding off the top of the support 10, the top of the support 10 has a limiting portion 1001 for limiting the downward pressing rod 11. The limiting portion 1001 can be two blocking blocks located on both sides of the downward pressing rod 11, and the distance between the two blocking blocks is greater than the width of the downward pressing rod 11.

[0044] According to the embodiments of the present application, reference Figure 5As shown, in order to prevent the upper pressure rod 8 or the lower pressure rod 11 from being subjected to excessive force due to improper operation, which may cause the gyro motor 17 or the measuring device to be damaged, the end of the upper pressure rod 8 hinged to the column 2 has a fixing plate 803 perpendicular to the upper pressure rod 8, and a first protective bolt 14 is installed on the fixing plate 803. When the upper counterweight 9 is too heavy, the first protective bolt 14 can abut against the column 2 and allow the column 2 to bear a certain force during the downward rotation of the upper pressure rod 8, thereby protecting the gyro motor 17; similarly, the base 1 is provided with a second protective bolt 15 located below the lower pressure rod 11. When the second weight 902 is too heavy, the second protective bolt 15 can abut against the lower pressure rod 11 and allow the base 1 to bear a certain force during the downward rotation of the lower pressure rod 11, thereby protecting the gyro motor 17.

[0045] refer to Figure 1 The upper and lower ends of the housing of the gyro motor 17 have chamfers. Figure 4 and Figure 5 As shown, a fixed support ring 3023 co-centering with the first through hole 3021 is provided at the top of the first barrel bottom 302, and the fixed support ring 3023 protrudes from the first barrel bottom 302; the measuring device also includes a movable support ring 16 disposed between the top of the gyro motor 17 and the barrel cap 5. The inner diameter size of the fixed support ring 3023 enables the fixed support ring 3023 to abut against the oblique chamfer of the lower part of the housing of the gyro motor 17, and the inner diameter size of the movable support ring 16 enables the movable support ring 16 to abut against the oblique chamfer of the upper part of the housing of the gyro motor 17, so that in the process of rotating the barrel cap 5 to clamp the gyro motor 17, the gyro motor 17 will be adaptively centered, thereby making the measurement accuracy of the device higher.

[0046] According to the embodiments of the present application, reference Figure 6 As shown, in order to enable the support cylinder 3 to be more stably fixed on the base 1, the support cylinder 3 also includes a third cylinder body 303 and a third cylinder bottom 304 located at the top of the third cylinder body 303, the first cylinder body 301 is connected and communicated with the third cylinder bottom 304, and the third cylinder body 303 is provided with a fourth avoidance area 3031 for the downward pressure rod 11 to pass through.

[0047] The following describes the implementation principle of the measuring device in conjunction with the operating steps of measuring the gyro motor 17:

[0048] In the first step, the first motor shaft 1701 and the second motor shaft 1702 of the gyro motor 17 are respectively equipped with the rod-shaped contact 13 and placed on the support cylinder 3. The first motor shaft 1701 passes through the first through hole 3021 and is fixed with the cylinder cap 5.

[0049] The second step is to install the upper pressure rod 8 at a suitable position on the column 2 through the fixing clamp, and the upper pressure rod 8 is hinged to the fixing clamp so that when the upper pressure rod 8 is horizontal, the free end of the upper pressure rod 8 contacts the rod-shaped contact 13 of the second motor shaft 1702;

[0050] The third step is to install the micrometer 7 on the column 2 through the fixing clamp so that the measuring rod 701 of the micrometer 7 contacts the top surface of the free end of the upper pressure rod 8;

[0051] Step 4: Install the two second weights 902 on the two suspension rods 9011 respectively, and apply downward pressure to the upward pressure rod 8 to make the first motor shaft 1701 and the second motor shaft 1702 of the gyro motor 17 move downward at the same time;

[0052] Step 5: Adjust the measuring rod 701 of the dial gauge 7 so that the reading of the dial gauge 7 is 0;

[0053] Step 6: Remove the two second weights 902, and sleeve the first weight 12 on the end of the lower pressure rod 11 away from the support tube 3, so that the first motor shaft 1701 and the second motor shaft 1702 of the gyro motor 17 move upward at the same time, read the reading μ1 of the micrometer 7 and record it;

[0054] Step 7: μ1 is the axial clearance of the gyro motor 17.

[0055] Compared with the measuring devices and methods of the related art, the measuring device of the present application has a simple structure, fewer operating steps, and utilizes a micrometer 7 with high measuring accuracy, so the measuring process has fewer steps, the measured values ​​are accurate, and the measuring efficiency is high.

[0056] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0058] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A measuring device for measuring the axial clearance of a gyro motor, wherein the gyro motor (17) has a first motor shaft (1701) and a second motor shaft (1702) having a common center line, characterized in that: include: Base (1); A column (2) vertically arranged on the upper surface of the base (1); A support tube (3) comprises a first tube body (301) and a first tube bottom (302) located at one end of the first tube body (301); the support tube (3) is fixedly connected to the base (1) with its opening facing downward, a first through hole (3021) is provided at the center of the first tube bottom (302), the first tube body (301) and the first tube bottom (302) have a first avoidance area (3022) for facilitating the installation of a gyro motor (17) to be tested, and the first avoidance area (3022) is connected to the first through hole (3021); the outer wall of the first tube body (301) has an external thread; An insert (4) is fixedly connected to the first cylinder (301), and a second through hole (401) is provided at the center of the insert (4); The piston (6) comprises a column (601) and an annular boss (602) connected to the upper end of the column (601) and protruding from the outer side of the column (601), wherein the column (601) is slidably matched with the second through hole (401); A barrel cap (5) comprising a second barrel body (501) and a second barrel bottom (502) located at the top end of the second barrel body (501); the inner wall of the second barrel body (501) comprises an internal thread matching the external thread; the barrel cap (5) is threadedly connected to the support barrel (3); the second barrel bottom (502) comprises a third through hole (503) having a diameter greater than that of the first motor shaft (1701); a second avoidance area (504) for installing the gyro motor (17) to be tested is provided on the second barrel bottom (502) and the second barrel body (501); the second avoidance area (504) is connected to the third through hole (503); A micrometer (7) is fixed on the column (2) via a fixing frame, and a measuring rod (701) of the micrometer (7) is vertically downward; An upper pressure rod (8), one end of which is hinged on the column (2), the upper pressure rod (8) can swing in a vertical plane, and the free end of the upper pressure rod (8) is located below the measuring rod (701) and in contact with the measuring rod (701); An upper counterweight (9) for applying pressure to the upper pressure rod (8); A support (10) fixedly connected to the base (1); A lower pressure rod (11), the middle part of which is hinged to the support (10), and one end of the lower pressure rod (11) abuts against the bottom of the piston (6); the first cylinder (301) has a third avoidance area for the lower pressure rod (11) to pass through; And, a first weight (12) is used to be sleeved on an end of the lower pressing rod (11) away from the supporting tube (3).

2. The measuring device for measuring the axial clearance of a gyro motor according to claim 1, characterized in that: It also includes two rod-shaped contacts (13), each of which has a first spherical head at one end and a mounting hole at the other end; the two rod-shaped contacts (13) are respectively mounted on the first motor shaft (1701) and the second motor shaft (1702).

3. The measuring device for measuring the axial clearance of a gyro motor according to claim 2, characterized in that: The first motor shaft (1701) and the second motor shaft (1702) both have external threads, and the mounting hole of the rod-shaped contact (13) is a threaded hole.

4. The measuring device for measuring the axial clearance of a gyro motor according to claim 1, characterized in that: The free end of the upper pressure rod (8) has two upper arm plates (801) and a lower arm plate (802) forming a U-shape in a vertical plane; the upper counterweight (9) includes a U-shaped bent frame (901) and two second weights (902), the U-shaped bent frame (901) includes two vertical suspension rods (9011) and a connecting rod (9012) connecting the two suspension rods (9011), the middle part of the connecting rod (9012) is mounted on the lower arm plate (802), and the two second weights (902) are respectively connected to the lower ends of the two suspension rods (9011).

5. The measuring device for measuring the axial clearance of a gyro motor according to claim 4, characterized in that: The upper surface of the lower arm plate (802) is provided with a limiting groove (8021) for limiting the connecting rod (9012).

6. The measuring device for measuring the axial clearance of a gyro motor according to claim 1, characterized in that: The end of the pressing rod (11) that abuts against the piston (6) has a second spherical head (1101), and the piston (6) is in contact with the second spherical head (1101) of the pressing rod (11).

7. The measuring device for measuring the axial clearance of a gyro motor according to claim 6, characterized in that: The position where the push-down rod (11) contacts the support (10) has a V-shaped groove (1102) opening downward, and the top of the support (10) is wedge-shaped; the top of the support (10) has a limiting portion (1001) for limiting the push-down rod (11).

8. The measuring device for measuring the axial clearance of a gyro motor according to claim 1, characterized in that: The end of the upper pressure rod (8) hinged to the column (2) has a fixing plate (803) perpendicular to the upper pressure rod (8), and a first protection bolt (14) is installed on the fixing plate (803); the base (1) is provided with a second protection bolt (15) located below the lower pressure rod (11).

9. The measuring device for measuring the axial clearance of a gyro motor according to claim 1, characterized in that: A fixed support ring (3023) co-centering with the first through hole (3021) is arranged at the top of the first cylinder bottom (302), and the fixed support ring (3023) protrudes from the first cylinder bottom (302); the measuring device also includes a movable support ring (16) arranged between the top of the gyro motor (17) and the cylinder cap (5).

10. The measuring device for measuring the axial clearance of a gyro motor according to claim 1, characterized in that: The support cylinder (3) also includes a third cylinder body (303) and a third cylinder bottom (304) located at the top of the third cylinder body (303); the first cylinder body (301) is connected to and communicates with the third cylinder bottom (304); and the third cylinder body (303) is provided with a fourth avoidance area (3031) for the downward pressure rod (11) to pass through.

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