CN213515431U

CN213515431U - Device for measuring axial clearance of bearing

Info

Publication number: CN213515431U
Application number: CN202022758110.8U
Authority: CN
Inventors: 安彦飞; 童瑞; 王猛
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-22
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a measuring device for bearing axial clearance, which belongs to the field of gear transmission, and comprises a supporting device, a lifting device and a measuring device, wherein the supporting device can support a straight shaft, a pair of tapered roller bearings sleeved on the straight shaft and a spacer ring positioned between the outer rings of the two tapered roller bearings; the lifting device can apply tension to the straight shaft to drive the straight shaft to move along the central axis direction of the straight shaft, and the inner ring of the tapered roller bearing is in interference fit with the straight shaft; the measuring device is fixed on the supporting device and provided with a measuring end, and the measuring end is abutted against the end face of the inner ring of the tapered roller bearing so as to measure the axial movement value of the straight shaft. The utility model provides a measuring device of bearing axial internal clearance, easy operation, labour saving and time saving has realized tapered roller bearing axial internal clearance's measurement.

Description

Device for measuring axial clearance of bearing

Technical Field

The utility model relates to a gear drive field especially relates to a bearing axial play's measuring device.

Background

The rotation of the gear is often supported by a bearing matched with the gear, the helical gear is widely applied due to stable transmission and large bearing capacity, but a certain axial force can be generated when the helical gear is meshed, and the tapered roller bearing can bear both a radial force and a one-way axial force, so the tapered roller bearing is often applied to a helical gear shaft system and is generally used in a matched manner, and the tapered roller bearing is installed back to back when used in a matched manner.

The tapered roller bearing has small axial clearance to ensure good running precision, but the temperature of the bearing is high, the bearing is easy to block due to expansion, and the gear box generates large vibration and noise during running due to large axial clearance, so that the proper axial clearance needs to be selected.

The method for measuring the axial clearance of the tapered roller bearing used in pairing at present comprises the following steps: the method is characterized in that the axial displacement amount of a shafting is vertically pulled up by a crane, a lifting rope and a lifting hook to measure the axial displacement amount of the shafting, a spacer ring is arranged between outer rings of two conical roller bearings used in a matched mode, the axial thickness of the spacer ring is reduced according to the axial displacement amount, the axial clearance of a redrawing shafting is verified to meet the design requirement, the method requires that the lifting point and the shafting axis are completely aligned, the tension force and the shafting axial direction are completely coincided, the requirement on the skill of an operator is high, the experience of the operator is rich, data distortion is caused when the alignment is slightly poor or the tension force is slightly deviated, the risk of damaging a roller path of the bearing is caused, and generally at least 3 groups of effective data are guaranteed, namely, the.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bearing axial play's measuring device to solve the bearing axial play's that exists among the prior art measurement difficulty and the technical problem of consuming time and power.

As the conception, the utility model adopts the technical proposal that:

a bearing axial play measuring device comprising:

the supporting device can support a straight shaft, a pair of tapered roller bearings sleeved on the straight shaft and a space ring positioned between outer rings of the two tapered roller bearings;

the lifting device can apply tension to the straight shaft to drive the straight shaft to move along the central axis direction of the straight shaft, and the inner ring of the tapered roller bearing is in interference fit with the straight shaft;

and the measuring device is fixed on the supporting device and is provided with a measuring end, and the measuring end is abutted against the end surface of the inner ring of the tapered roller bearing so as to measure the axial movement value of the straight shaft.

Further, the lifting device comprises a power pump and a moving part which are detachably connected, wherein the moving part is connected with the straight shaft, and the supporting device is connected in a sliding manner.

Further, the moving part comprises a cylinder body and a connecting piece which are detachably connected, the power pump is detachably connected with the cylinder body, and the connecting piece is in threaded connection with the straight shaft.

Further, the lifting device further comprises a thrust ball bearing, the connecting piece penetrates through the thrust ball bearing, and the thrust ball bearing is located between the connecting piece and the cylinder body.

Further, the connecting piece is a bolt.

Further, the measuring device is a dial indicator.

Furthermore, two dial indicators are arranged, the two dial indicators are symmetrically arranged relative to the central axis of the straight shaft, and gauge heads of the dial indicators are perpendicularly abutted to the end face of the inner ring of the tapered roller bearing or the end face of the straight shaft.

Further, the supporting device comprises a bearing seat and a supporting part which are detachably connected, the tapered roller bearing and the space ring are located in the bearing seat, the bearing seat is abutted to one outer ring of the tapered roller bearing, and the supporting part is abutted to the other outer ring of the tapered roller bearing.

Further, the supporting part comprises a connecting seat and a supporting seat which are detachably connected, the connecting seat is detachably connected with the bearing seat, the connecting seat abuts against the outer ring of the tapered roller bearing, and the lifting device is connected with the supporting seat in a sliding mode.

The utility model has the advantages that:

the utility model provides a measuring device of bearing axial internal clearance, strutting arrangement realize to the support of straight axle, tapered roller bearing and space ring, and hoisting device exerts the pulling force to the straight axle and removes in order to drive the central axis direction of straight axle along the straight axle, has realized the axial displacement of straight axle, and measuring device measures straight axle axial displacement's numerical value, and this numerical value is tapered roller bearing's axial internal clearance numerical value. The utility model provides a measuring device of bearing axial internal clearance, easy operation, labour saving and time saving has realized tapered roller bearing axial internal clearance's measurement.

Drawings

Fig. 1 is a schematic structural diagram of a device for measuring axial play of a bearing provided by the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is an enlarged view at B in fig. 1.

In the figure:

10. a straight shaft; 20. a tapered roller bearing; 30. a space ring;

1. a support device; 11. a bearing seat; 12. a support portion; 121. a connecting seat; 122. a supporting seat;

2. a lifting device; 21. a power pump; 22. a moving part; 221. a cylinder body; 222. a connecting member; 23. a thrust ball bearing;

3. and (4) a measuring device.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1 to 3, an embodiment of the present invention provides a device for measuring an axial play of a bearing, for measuring an axial play value of a tapered roller bearing.

The measuring device for the axial clearance of the bearing comprises a supporting device 1, a lifting device 2 and a measuring device 3, wherein the supporting device 1 is used for supporting a straight shaft 10, a pair of tapered roller bearings 20 sleeved on the straight shaft 10 and a spacer ring 30 positioned between the outer rings of the two tapered roller bearings 20, the lifting device 2 is used for applying tension to the straight shaft 10 to drive the straight shaft 10 to move along the central axis direction of the straight shaft 10, the inner rings of the tapered roller bearings 20 are in interference fit with the straight shaft 10, the inner ring of the tapered roller bearing 20 and the straight shaft 10 move synchronously, the measuring device 3 is used for measuring the axial clearance of the tapered roller bearing 20, the measuring device 3 is fixed on the supporting device 1, the measuring device 3 is provided with a measuring end, the measuring end is abutted to the end face of the inner ring of the tapered roller bearing 20, and the axial movement value of the straight shaft 10 is measured, and the axial movement value is the axial clearance value of the bearing.

Referring to fig. 1, the supporting device 1 includes a bearing seat 11 and a supporting portion 12 that are detachably connected, the tapered roller bearings 20 and the space ring 30 are located in the bearing seat 11, the bearing seat 11 is used for supporting the tapered roller bearings 20 and the space ring 30, the bearing seat 11 abuts against an outer ring of one tapered roller bearing 20, the supporting portion 12 abuts against an outer ring of another tapered roller bearing 20, fixing of the outer rings of the two tapered roller bearings 20 is achieved, and the bearing seat 11 and the supporting portion 12 are detachably connected to facilitate disassembly and replacement.

Optionally, the supporting portion 12 includes a connecting seat 121 and a supporting seat 122 detachably connected, the connecting seat 121 and the bearing seat 11 are detachably connected, the connecting seat 121 abuts against the outer ring of the tapered roller bearing 20, the lifting device 2 is slidably connected to the supporting seat 122, the supporting portion 12 is two parts, so that the mounting and the dismounting are convenient, the processing is convenient, and the cost is reduced.

The inner ring of the tapered roller bearing 20 is retained by the shoulder of the straight shaft 10, so that the inner ring of the tapered roller bearing 20 and the straight shaft 10 move synchronously in the axial direction.

Referring to fig. 1 and 2, the lifting device 2 comprises a power pump 21 and a moving part 22 which are detachably connected, the moving part 22 is connected with the straight shaft 10, the supporting device 1 is slidably connected, the power pump 21 provides power for the moving part 22, so that the moving part 22 can slide on the supporting device 1, the moving part 22 drives the straight shaft 10 to move along the central axis direction of the straight shaft 10, and the pulling force provided by the combination of the power pump 21 and the moving part 22 is stable, and the operation is simple.

Referring to fig. 2, the moving portion 22 includes a cylinder 221 and a connecting member 222 which are detachably connected, the power pump 21 and the cylinder 221 are detachably connected, so that the power pump is convenient to disassemble, assemble and store, the connecting member 222 is in threaded connection with the straight shaft 10, the moving portion 22 drives the straight shaft 10 to move, and the power pump is simple in structure and convenient to process.

The lifting device 2 further comprises a thrust ball bearing 23, the connecting piece 222 penetrates through the thrust ball bearing 23, and the thrust ball bearing 23 is positioned between the connecting piece 222 and the cylinder body 221, so that friction between the cylinder body 221 and the connecting piece 222 is reduced.

Optionally, the connecting member 222 is a bolt, which is convenient to obtain and low in cost.

One end of the straight shaft 10, which is far away from the tapered roller bearing 20, is sleeved with a cylindrical roller bearing, the cylindrical roller bearing plays a role in supporting the straight shaft 10, and the cylindrical roller bearing has large radial bearing capacity and can bear heavy load and impact load.

Referring to fig. 1 and 3, the measuring device 3 is a dial indicator, which is convenient to obtain materials and accurate in measurement.

The amesdial is equipped with two, and two amesdials set up for the central axis symmetry of straight axle 10, and two amesdials take the average value as the measured value, and the measured value that obtains is more accurate, the perpendicular butt in terminal surface of tapered roller bearing 20's inner circle of gauge head or the terminal surface of straight axle 10 of amesdial, the terminal surface of straight axle 10 of gauge head butt of amesdial is the finish machining terminal surface to the realization is to tapered roller bearing 20 inner circle along the measurement of the displacement value of straight axle 10 axial direction.

Optionally, the measuring devices 3 may select other measuring devices, such as a dial indicator or a ten-thousandth meter, according to the precision requirement, the number of the measuring devices 3 may also be adjusted according to the diameter of the straight shaft 10, and at least two measuring devices 3 may be used for more precise measurement.

The embodiment of the utility model provides a measuring device for bearing axial internal clearance's use as follows:

s1: the reading of the measuring device 3 is zeroed, the output tension of the lifting device 2 is zero, the lifting device 2 drives the straight shaft 10 to move along the direction of the central axis of the straight shaft 10, the inner ring of the tapered roller bearing 20 synchronously moves along with the straight shaft 10 while the straight shaft 10 moves, the reading of the measuring device 3 is gradually increased, and the output tension of the lifting device 2 is gradually increased;

s2: when the output tension of the lifting device 2 reaches the set tension, the movement is stopped, and the measured value of the measuring device 3 is the axial movement value A1 of the straight shaft 10;

s3: according to the set axial play value a and the axial movement value a1, the axial thickness of the cage 30 is adjusted so that the axial thickness of the cage 30 is reduced by a value a2 equal to a 1-a.

The reading of measuring device 3 is zeroed, hoisting device 2 drives straight axle 10 and removes along the central axis direction of straight axle 10, tapered roller bearing 20's inner circle and measuring device 3's measurement end are along with straight axle 10 synchronous motion, until hoisting device 2's output pressure reaches the set pressure, stop moving, the axial thickness of spacer ring 30 is adjusted to the measured value according to measuring device 3, measuring device 3's measured value is the numerical value of the axial internal clearance of bearing, the measurement to tapered roller bearing 20 axial internal clearance has been realized, and the operation is simple, time saving and labor saving.

Alternatively, the thickness of the spacer ring 30 is reduced by grinding, the spacer ring 30 is firstly subjected to rough grinding, the rough grinding is stopped when the rough grinding value is close to the reduction value, and then the spacer ring 30 is subjected to fine grinding to enable the thickness of the two grinding times to be the reduction value A2, so that the processing is convenient and the result is accurate.

Optionally, the lifting device 2 is a hydraulic cylinder which is simple in structure, large in output force, stable and reliable in performance, convenient to use and maintain and wide in application range.

Before each reading of the measuring device 3, the straight shaft 10 is subjected to a pan movement comprising:

before S1, primary coiling is carried out on the straight shaft 10, so that the residual play at the moment is eliminated; in S2, after the movement of the lifter 2 is stopped, the spool 10 is rewound and the output pressure of the lifter 2 is made equal to the set pressure, which achieves elimination of the residual play at this time.

The turning of the straight shaft 10 includes:

the number of the circles of the forward-direction straight-axis 10 and the number of the circles of the reverse-direction straight-axis 10 are set, so that the force applied to the tapered roller bearing 20 is uniform, and the residual play is eliminated completely.

The number of cycles is set to at least three cycles, and when the number of cycles is too small, all residual play cannot be eliminated, and when the number of cycles is set to three or more, all residual play can be eliminated.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A bearing axial play measuring device, comprising:

the supporting device (1) can support a straight shaft (10), a pair of tapered roller bearings (20) sleeved on the straight shaft (10) and a spacer ring (30) positioned between outer rings of the two tapered roller bearings (20);

the lifting device (2) can apply pulling force to the straight shaft (10) to drive the straight shaft (10) to move along the central axis direction of the straight shaft (10), and the inner ring of the tapered roller bearing (20) is in interference fit with the straight shaft (10);

the measuring device (3) is fixed on the supporting device (1), the measuring device (3) is provided with a measuring end, and the measuring end is abutted against the end face of the inner ring of the tapered roller bearing (20) so as to measure the axial movement value of the straight shaft (10).

2. Device for measuring the axial play of a bearing according to claim 1, characterized in that said lifting means (2) comprise a power pump (21) and a mobile part (22) which are removably connected, said mobile part (22) being connected to said straight shaft (10) and being slidingly connected to said support means (1).

3. The device for measuring the axial play of a bearing according to claim 2, characterized in that the moving portion (22) comprises a cylinder (221) and a connecting piece (222) which are detachably connected, the power pump (21) is detachably connected with the cylinder (221), and the connecting piece (222) is in threaded connection with the straight shaft (10).

4. Device for measuring the axial play of a bearing according to claim 3, characterized in that the lifting device (2) further comprises a thrust ball bearing (23), the connecting piece (222) passing through the thrust ball bearing (23), the thrust ball bearing (23) being located between the connecting piece (222) and the cylinder block (221).

5. Device for measuring the axial play of a bearing according to claim 3, characterized in that the connection piece (222) is a bolt.

6. Device for measuring the axial play of a bearing according to claim 1, characterized in that the measuring device (3) is a dial indicator.

7. The device for measuring the axial play of the bearing, according to claim 6, is characterized in that two dial indicators are provided, the two dial indicators are symmetrically arranged relative to the central axis of the straight shaft (10), and the gauge heads of the dial indicators vertically abut against the end surface of the inner ring of the tapered roller bearing (20) or the end surface of the straight shaft (10).

8. The device for measuring the axial play of a bearing as claimed in claim 1, characterized in that the support device (1) comprises a bearing seat (11) and a support part (12) which are detachably connected, the tapered roller bearing (20) and the spacer ring (30) are located in the bearing seat (11), the bearing seat (11) abuts against the outer ring of one of the tapered roller bearings (20), and the support part (12) abuts against the outer ring of the other tapered roller bearing (20).

9. The device for measuring axial play of a bearing according to claim 8, wherein the support portion (12) comprises a connecting seat (121) and a supporting seat (122) which are detachably connected, the connecting seat (121) is detachably connected with the bearing seat (11), the connecting seat (121) abuts against an outer ring of the tapered roller bearing (20), and the lifting device (2) is slidably connected with the supporting seat (122).