Gear shaft thrust clearance measuring tool

Abstract

The utility model provides a gear shaft thrust clearance measuring tool, which is used for measuring the thrust clearance of a gear shaft of a multi-shaft centrifugal compressor, and comprises a thrust bolt, a limiting plate group and a thrust nut, the limiting plate set is fixedly arranged on a shell of the multi-shaft centrifugal compressor, the thrust bolt penetrates through the limiting plate set, one end of the thrust bolt is connected with a gear shaft of the multi-shaft centrifugal compressor, and the thrust nut is connected to the thrust bolt in a threaded and sleeved mode. In the axial direction of the thrust bolt, the limiting plate set is provided with two opposite abutting and pushing faces, thrust nuts are arranged on the sides, deviating from each other, of the two abutting and pushing faces, and the thrust nuts can abut against or be separated from the abutting and pushing faces on the corresponding sides so that the gear shaft can move in a reciprocating mode in the axial direction of the gear shaft. According to the technical scheme provided by the utility model, the problems of low measurement precision, long measurement time and high labor intensity of a method for measuring the thrust clearance of the gear shaft in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor shaft thrust clearance tooling, in particular to a gear shaft thrust clearance measuring tooling. Background Art

[0002] As the core equipment of chemical enterprises, multi-shaft centrifugal compressors have the advantages of compact structure, fixed transmission ratio and high efficiency. Multi-shaft centrifugal compressors are mainly used as process gas delivery equipment, and their gearboxes play a vital role. In the maintenance of multi-shaft centrifugal compressors, the thrust clearance measurement of each gear shaft is very important. Inaccurate thrust clearance measurement will cause the reference point of the shaft displacement probe to change, thus causing false alarms and jumps at the measuring point. More seriously, it will cause damage to the probe, thrust bearing, etc.

[0003] In order to further improve the maintenance quality and eliminate the risks and hidden dangers caused by inaccurate thrust clearance measurement, a thrust clearance measurement tooling is designed and manufactured based on the actual situation of the maintenance site.

[0004] Traditionally, the thrust clearance measurement of multi-axis centrifugal compressors relies on manual repeated prying of the gear shaft for measurement, but this method has low measurement accuracy, is time-consuming, labor-intensive, and has safety hazards during operation; alternatively, a hydraulic jack is used to push back and forth for measurement, but this method can easily cause the shell of the multi-axis centrifugal compressor unit to deform, leading to inaccurate measurement data. Utility Model Content

[0005] The utility model provides a gear shaft thrust clearance measuring tool to solve the problems of low measuring accuracy, long measuring time and high labor intensity in the prior art method for measuring the gear shaft thrust clearance.

[0006] In order to solve the above problems, the utility model provides a gear shaft thrust clearance measuring tool, which is used to measure the thrust clearance of the gear shaft of a multi-axis centrifugal compressor. The gear shaft thrust clearance measuring tool comprises a thrust bolt, a limit plate group and a thrust nut. The limit plate group is fixedly arranged on the housing of the multi-axis centrifugal compressor, the thrust bolt passes through the limit plate group and one end is connected to the gear shaft of the multi-axis centrifugal compressor, and the thrust nut is threadedly sleeved on the thrust bolt; in the axial direction of the thrust bolt, the limit plate group has two opposite thrust surfaces, and thrust nuts are arranged on the sides of the two thrust surfaces facing away from each other, and the thrust nut and the thrust surface on the corresponding side can be tightened or separated to make the gear shaft move back and forth along its axial direction.

[0007] Furthermore, the limit plate group includes a thrust plate spaced apart from the shell of the multi-axis centrifugal compressor, the distance between the thrust plate and the shell of the multi-axis centrifugal compressor is fixed, the thrust bolt passes through the thrust plate, and the two end faces of the thrust plate in the axial direction of the thrust bolt respectively form two thrust surfaces.

[0008] Furthermore, the limiting plate group also includes a support plate and an adapter assembly. The support plate is fixedly arranged on the housing of the multi-shaft centrifugal compressor and is fixedly connected to the thrust plate through the adapter assembly.

[0009] Furthermore, the adapter assembly includes a fixing bolt and a fixing nut, one end of the fixing bolt is fixedly arranged on the support plate, and the other end of the fixing bolt passes through the thrust plate and fixes the relative position of the thrust plate and the support plate through the fixing nut.

[0010] Furthermore, there are multiple adapter assemblies, and the multiple adapter assemblies are arranged at intervals along the circumference of the thrust plate.

[0011] Furthermore, the support plate includes a sector plate segment and a raised limit plate segment connected to each other, the connection position of the sector plate segment and the raised limit plate segment forms a limit hole for inserting the thrust bolt, and the sector plate segment is installed on the housing of the multi-axis centrifugal compressor by multiple screws.

[0012] Furthermore, the thrust nut on one side close to the end of the gear shaft is the main nut, and the thrust nut on the other side is the secondary nut; the gear shaft thrust clearance measuring tool has a first detection state and a second detection state. When the gear shaft thrust clearance measuring tool is in the first detection state, the main nut is tightened and the secondary nut is loosened; when the gear shaft thrust clearance measuring tool is in the second detection state, the main nut is loosened and the secondary nut is tightened.

[0013] Furthermore, the gear shaft thrust clearance measuring tool also includes a dial indicator, which is mounted on the axial end surface of the gear shaft to detect the axial movement of the gear shaft.

[0014] Furthermore, the gear shaft thrust clearance measuring tool also includes a gasket, and a gasket is arranged between any thrust nut and its corresponding thrust surface.

[0015] Furthermore, the gear shaft thrust clearance measuring tool also includes a shaft head fastening bolt, and the thrust bolt is fastened to the gear shaft through the shaft head fastening bolt.

[0016] By applying the technical solution of the utility model, a gear shaft thrust clearance measuring tool is provided. The gear shaft thrust clearance measuring tool is used to measure the thrust clearance of the gear shaft of a multi-axis centrifugal compressor. The gear shaft thrust clearance measuring tool comprises a thrust bolt, a limit plate group and a thrust nut. The limit plate group is fixedly arranged on the housing of the multi-axis centrifugal compressor. The thrust bolt passes through the limit plate group and one end is connected to the gear shaft of the multi-axis centrifugal compressor. The thrust nut is threadedly sleeved on the thrust bolt. In the axial direction of the thrust bolt, the limit plate group has two opposite thrust surfaces. Thrust nuts are arranged on the sides of the two thrust surfaces facing away from each other. The thrust nut and the thrust surface on the corresponding side can be tightened or separated to allow the gear shaft to reciprocate along its axial direction.

[0017] By adopting this scheme and utilizing the principle of action and reaction force, when the thrust nut is tightened on the thrust surface, the thrust bolt will be subjected to a force opposite to the tightening force due to the stop of the thrust nut by the thrust surface and the threaded connection between the thrust bolt and the thrust nut, thereby causing the thrust bolt and the gear shaft to move in the opposite direction to the tightening direction. The movement displacement is the thrust clearance of the gear shaft in this direction.

[0018] The operator can loosen or tighten the thrust nuts on the sides of the two thrust surfaces facing away from each other according to the actual situation to realize the reciprocating movement of the gear shaft in the axial direction, and then realize the measurement of the maximum thrust clearance of the gear shaft in the axial direction.

[0019] Such arrangement improves the accuracy of gear shaft clearance measurement, compared with the prior art where manual prying measurement is used and the measurement accuracy is easily affected by the prying force and is inaccurate, and the prior art where hydraulic jack is used for pushing measurement and the measurement error is easily caused by shell deformation. At the same time, it is beneficial to reduce measurement time, reduce labor intensity and safety hazards, and improve measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 The schematic structural diagram of the gear shaft thrust clearance measuring tool provided in the embodiment of the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. Thrust bolt;

[0024] 20. Limiting plate set;

[0025] 201, push surface;

[0026] 21. Thrust plate;

[0027] 22. Support plate;

[0028] 221, fan-shaped plate segment;

[0029] 222, raised limiting plate section;

[0030] 23. Adapter assembly;

[0031] 231, fixing bolt;

[0032] 232, fixing nut;

[0033] 30. Thrust nut;

[0034] 31. Main nut;

[0035] 32. Secondary nut;

[0036] 40. Gasket;

[0037] 50. Fasten the shaft head bolt. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] like Figure 1 As shown, an embodiment of the utility model provides a gear shaft thrust clearance measuring tool, which is used to measure the thrust clearance of the gear shaft of a multi-axis centrifugal compressor. The gear shaft thrust clearance measuring tool comprises a thrust bolt 10, a limit plate group 20 and a thrust nut 30. The limit plate group 20 is fixedly arranged on the housing of the multi-axis centrifugal compressor. The thrust bolt 10 passes through the limit plate group 20 and one end is connected to the gear shaft of the multi-axis centrifugal compressor. The thrust nut 30 is threadedly sleeved on the thrust bolt 10; in the axial direction of the thrust bolt 10, the limit plate group 20 has two opposite thrust surfaces 201, and the two thrust surfaces 201 are each provided with a thrust nut 30 on the side facing away from each other. The thrust nut 30 and the thrust surface 201 on the corresponding side can be tightened or separated to allow the gear shaft to reciprocate along its axial direction.

[0040] In this embodiment, by utilizing the principle of action and reaction, when the thrust nut 30 is tightened on the thrust surface 201, the thrust bolt 10 will be subjected to a force opposite to the tightening force due to the stopping of the thrust nut 30 by the thrust surface 201 and the threaded connection between the thrust bolt 10 and the thrust nut 30, thereby causing the thrust bolt 10 and the gear shaft to move in the opposite direction to the tightening direction, and the movement displacement is the thrust clearance of the gear shaft in this direction.

[0041] The operator can loosen or tighten the thrust nuts 30 on the opposite sides of the two thrust surfaces 201 according to actual conditions to achieve the reciprocating movement of the gear shaft in the axial direction, thereby measuring the maximum thrust clearance of the gear shaft in the axial direction.

[0042] Such arrangement improves the accuracy of gear shaft clearance measurement, compared with the prior art where manual prying measurement is used and the measurement accuracy is easily affected by the prying force and is inaccurate, and the prior art where hydraulic jack is used for pushing measurement and the measurement error is easily caused by shell deformation. At the same time, it is beneficial to reduce measurement time, reduce labor intensity and safety hazards, and improve measurement efficiency.

[0043] like Figure 1 As shown, the limit plate group 20 includes a thrust plate 21 spaced from the shell of the multi-axis centrifugal compressor, the distance between the thrust plate 21 and the shell of the multi-axis centrifugal compressor is fixed, the thrust bolt 10 passes through the thrust plate 21, and the two end faces of the thrust plate 21 in the axial direction of the thrust bolt 10 respectively form two thrust surfaces 201.

[0044] Such an arrangement facilitates the arrangement of the thrust bolt 10 and the forming of the thrust surfaces 201 on both sides.

[0045] On the other hand, the thrust bolts 10 on both sides are tightened on the same thrust plate 21, which is conducive to ensuring the force transmission effect and further ensuring the measurement accuracy of the thrust clearance of the gear shaft.

[0046] At the same time, due to the spacing between the thrust plate 21 and the housing, it is convenient for the operator to use tools to tighten or loosen the thrust nut 30, thereby reducing the difficulty of operation and improving the measurement efficiency.

[0047] like Figure 1 As shown, the limiting plate assembly 20 further includes a support plate 22 and an adapter assembly 23 . The support plate 22 is fixedly disposed on the housing of the multi-shaft centrifugal compressor and is fixedly connected to the thrust plate 21 through the adapter assembly 23 .

[0048] Such an arrangement facilitates the fixed connection between the thrust plate 21 and the housing, thereby ensuring the force transmission effect and the measurement accuracy of the thrust clearance of the gear shaft.

[0049] It can be understood that in other embodiments not shown in the figures, the position of the thrust surface 201 and the setting position of the thrust nut 30 can be adjusted according to actual conditions. For example, the side where the thrust plate 21 and the support plate 22 are close to each other can be the thrust surface 201, and the two thrust nuts 30 are located therebetween and can be tightened or separated from the two thrust surfaces 201 respectively.

[0050] Specifically, the adapter assembly 23 includes a fixing bolt 231 and a fixing nut 232 , one end of the fixing bolt 231 is fixedly disposed on the support plate 22 , and the other end of the fixing bolt 231 passes through the thrust plate 21 and fixes the relative position of the thrust plate 21 and the support plate 22 through the fixing nut 232 .

[0051] This arrangement facilitates the installation and positioning of the thrust plate 21. It is understandable that the fixing bolts 231 on both sides of the thrust plate 21 are sleeved with fixing nuts 232, and the fixing nuts 232 on both sides are tightened simultaneously to fasten the thrust plate 21 to a desired position.

[0052] Preferably, there are multiple adapter assemblies 23 , and the multiple adapter assemblies 23 are arranged at intervals along the circumference of the thrust plate 21 to improve the connection effect between the support plate 22 and the thrust plate 21 .

[0053] In this embodiment, there are four adapter components 23. It is understandable that the number and structure of the adapter components 23 can be adjusted according to actual conditions, and no examples are given here.

[0054] Among them, the support plate 22 includes a fan-shaped plate segment 221 and a raised limiting plate segment 222 which are connected to each other. The connection position of the fan-shaped plate segment 221 and the raised limiting plate segment 222 forms a limiting hole for passing the thrust bolt 10. The fan-shaped plate segment 221 is installed on the casing of the multi-axis centrifugal compressor by multiple screws.

[0055] Such an arrangement facilitates the clamping of the support plate 22 and the clamping of the support plate 22 on the thrust bolt 10 .

[0056] Preferably, the fan-shaped plate segment 221 in this embodiment is a semicircular fan-shaped plate, and the raised limiting plate segment 222 is a semicircular annular plate. The top area of ​​the fan-shaped plate segment 221 facing the raised limiting plate segment 222 is thickened and provided with a semicircular hole. This arrangement is conducive to increasing the support area of ​​the semicircular hole on the fan-shaped plate segment 221 for the thrust bolt 10, which is conducive to improving the stable support effect of the thrust bolt 10. At the same time, this arrangement is also conducive to ensuring the reliability and stability of the installation of the raised limiting plate segment 222; the annular area of ​​the raised limiting plate segment 222 forms the other half of the semicircular hole, and the two semicircular holes correspond to and form a limiting hole for inserting the thrust bolt 10. The fan-shaped plate segment 221 is provided with a plurality of screw holes for inserting screws in the area avoiding the thickened part.

[0057] In this embodiment, the thrust nut 30 on one side close to the end of the gear shaft is the main nut 31, and the thrust nut 30 on the other side is the secondary nut 32; the gear shaft thrust clearance measuring tool has a first detection state and a second detection state. When the gear shaft thrust clearance measuring tool is in the first detection state, the main nut 31 is tightened and the secondary nut 32 is loosened; when the gear shaft thrust clearance measuring tool is in the second detection state, the main nut 31 is loosened and the secondary nut 32 is tightened.

[0058] With this arrangement, the gear shaft is first moved to one side along its axial direction, and then the gear shaft is moved in the opposite direction, thereby obtaining the maximum axial movement clearance of the gear shaft, thereby ensuring the accuracy and reliability of the gear shaft thrust clearance measurement.

[0059] Specifically, the gear shaft thrust clearance measuring tool also includes a dial indicator, which is mounted on the axial end surface of the gear shaft to detect the axial movement of the gear shaft.

[0060] This arrangement makes it easy for operators to observe and record the movement of the gear shaft.

[0061] like Figure 1 As shown, the gear shaft thrust clearance measuring tool further includes a gasket 40 , and a gasket 40 is arranged between any thrust nut 30 and the corresponding thrust surface 201 .

[0062] In this embodiment, the gasket 40 is provided to provide a buffer for the tightening of the thrust nut 30 , thereby preventing the tightening of the thrust nut 30 from causing damage to the thrust surface 201 .

[0063] like Figure 1 As shown, the gear shaft thrust clearance measuring tool further includes a shaft head fastening bolt 50 , and the thrust bolt 10 is fastened to the gear shaft via the shaft head fastening bolt 50 .

[0064] In this embodiment, the end of the thrust bolt 10 is inserted into the shaft head fastening bolt 50, and the shaft head fastening bolt 50 is fastened in the internal threaded hole of the shaft head of the gear shaft. This arrangement facilitates the transmission of force from the thrust bolt 10 to the gear shaft, so as to drive the gear shaft to move axially and measure the thrust clearance.

[0065] In summary, the utility model provides a gear shaft thrust clearance measuring tool, the working principle of which includes:

[0066] When measuring the thrust clearance of one of the gear shafts of the multi-axis centrifugal compressor, the gear shaft thrust clearance measuring tool is set at the position corresponding to the gear shaft, the gear shaft and the thrust bolt 10 are integrated by the shaft head fastening bolt 50, and the limit plate group 20 is installed on the shell by screws, so that the limit plate group 20 and the shell are integrated, ensuring that the force generated by the main nut 31 and the auxiliary nut 32 can be transmitted to the shell through the thrust plate 21, ensuring that the limit plate group 20 can withstand sufficient force and reaction force during the measurement process; then, according to the position of the gear shaft, first tighten the main nut 31 and loosen the auxiliary nut 32, and set up a dial indicator on the axial end face of the gear shaft; then tighten the auxiliary nut 32, loosen the main nut 31 and read the dial indicator value, so as to measure its thrust clearance. When reinstalling the shaft displacement probe, the required position is accurately adjusted in the above manner as needed to ensure that the installation reference point of the shaft displacement measuring point is accurate and the reinstallation error of the measuring point is effectively avoided. This arrangement makes the measurement of the thrust clearance of the compressor gear shaft more accurate, the operation process safe and reliable, and improves the quality and efficiency of unit maintenance.

[0067] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0069] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0071] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0072] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gear shaft thrust clearance measuring tool, the gear shaft thrust clearance measuring tool is used to measure the thrust clearance of the gear shaft of a multi-shaft centrifugal compressor, characterized in that: The gear shaft thrust clearance measuring tool comprises a thrust bolt (10), a limit plate group (20) and a thrust nut (30); the limit plate group (20) is fixedly arranged on the housing of the multi-axis centrifugal compressor; the thrust bolt (10) passes through the limit plate group (20) and one end is connected to the gear shaft of the multi-axis centrifugal compressor; the thrust nut (30) is threadedly sleeved on the thrust bolt (10); in the axial direction of the thrust bolt (10), the limit plate group (20) has two opposite thrust surfaces (201); the thrust nuts (30) are arranged on the sides of the two thrust surfaces (201) facing away from each other; the thrust nut (30) and the thrust surface (201) on the corresponding side can be tightened or separated so that the gear shaft can reciprocate along its axial direction.

2. The gear shaft thrust clearance measuring tool according to claim 1, characterized in that: The limit plate group (20) comprises a thrust plate (21) spaced apart from the shell of the multi-axis centrifugal compressor, the distance between the thrust plate (21) and the shell of the multi-axis centrifugal compressor is fixed, the thrust bolt (10) passes through the thrust plate (21), and the two end faces of the thrust plate (21) in the axial direction of the thrust bolt (10) respectively form two thrust surfaces (201).

3. The gear shaft thrust clearance measuring tool according to claim 2, characterized in that: The limit plate group (20) further comprises a support plate (22) and an adapter assembly (23); the support plate (22) is fixedly arranged on the housing of the multi-shaft centrifugal compressor and is fixedly connected to the thrust plate (21) via the adapter assembly (23).

4. The gear shaft thrust clearance measuring tool according to claim 3, characterized in that: The adapter assembly (23) comprises a fixing bolt (231) and a fixing nut (232); one end of the fixing bolt (231) is fixedly disposed on the support plate (22); the other end of the fixing bolt (231) passes through the thrust plate (21) and fixes the relative position of the thrust plate (21) and the support plate (22) via the fixing nut (232).

5. The gear shaft thrust clearance measuring tool according to claim 3, characterized in that: There are a plurality of adapter assemblies (23), and the plurality of adapter assemblies (23) are arranged at intervals along the circumference of the thrust plate (21).

6. The gear shaft thrust clearance measuring tool according to claim 3, characterized in that: The support plate (22) comprises a sector plate segment (221) and a raised limiting plate segment (222) which are connected to each other, wherein a limiting hole for passing the thrust bolt (10) is formed at a connection position between the sector plate segment (221) and the raised limiting plate segment (222), and the sector plate segment (221) is mounted on the housing of the multi-axis centrifugal compressor by means of a plurality of screws.

7. The gear shaft thrust clearance measuring tool according to claim 1, characterized in that: The thrust nut (30) on one side close to the end of the gear shaft is a main nut (31), and the thrust nut (30) on the other side is a secondary nut (32); the gear shaft thrust clearance measuring tool has a first detection state and a second detection state, When the gear shaft thrust clearance measuring tool is in the first detection state, the main nut (31) is tightened and the secondary nut (32) is loosened; when the gear shaft thrust clearance measuring tool is in the second detection state, the main nut (31) is loosened and the secondary nut (32) is tightened.

8. The gear shaft thrust clearance measuring tool according to claim 1, characterized in that: The gear shaft thrust clearance measuring tool also includes a dial indicator, which is mounted on the axial end surface of the gear shaft to detect the axial movement of the gear shaft.

9. The gear shaft thrust clearance measuring tool according to claim 1, characterized in that: The gear shaft thrust clearance measuring tool further comprises a gasket (40), and a gasket (40) is arranged between any one of the thrust nuts (30) and the corresponding thrust surface (201).

10. The gear shaft thrust clearance measuring tool according to claim 1, characterized in that: The gear shaft thrust clearance measuring tool further comprises a shaft head fastening bolt (50), and the thrust bolt (10) is fastened to the gear shaft via the shaft head fastening bolt (50).

Images