CN214793696U - Bearing unit angular stiffness measuring device - Google Patents
Bearing unit angular stiffness measuring device Download PDFInfo
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- CN214793696U CN214793696U CN202121050045.1U CN202121050045U CN214793696U CN 214793696 U CN214793696 U CN 214793696U CN 202121050045 U CN202121050045 U CN 202121050045U CN 214793696 U CN214793696 U CN 214793696U
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Abstract
The utility model relates to a bearing unit angular stiffness measuring device, include: the device comprises an outer bearing seat, a test main shaft, a radial loading mechanism and displacement sensors at two ends; the outer bearing seat is provided with an outer ring stopping structure; the test main shaft is provided with an inner ring blocking structure; the radial loading mechanism is used for applying a radial loading acting force to the test main shaft along the radial direction of the test main shaft; and the two-end displacement sensors are used for detecting the radial displacement of the corresponding two set positions of the test main shaft when the radial loading mechanism applies acting force, and the radial displacement is perpendicular to the axial direction of the test main shaft. The bearing unit is fastened and assembled by the inner side detachable blocking structure and the outer side detachable blocking structure, pre-tightening assembly is achieved, the actual working condition of the bearing unit is simulated better, the angular rigidity measurement precision is guaranteed, and angular rigidity measurement of the bearing unit is facilitated.
Description
Technical Field
The utility model relates to a bearing unit angle rigidity measuring device.
Background
The bearing unit is used as a rotary supporting component of an inertial actuating mechanism of a spacecraft attitude control system, generally comprises two sets of paired angular contact ball bearings, an inner spacer ring and an outer spacer ring and the like, and the performance, the service life and the reliability of the bearing unit directly influence the success or failure of a spacecraft task.
Compared with the traditional inertia actuating mechanism, when the novel inertia actuating mechanism of the moment gyro type works on the track, the gyro outer frame is flexible while the high-speed rotor continuously rotates at a high speed, the bearing unit can simultaneously rotate around two intersected revolution axes and rotation axes, and the bearing unit can bear the combined load action of a larger complex alternating radial force, axial force and overturning moment.
Under the maneuvering condition, if the angular stiffness of the bearing unit is insufficient, the high-speed rotor risks deflection along the axis direction, and the rotation precision of the high-speed rotor is influenced by the axis deflection, so that the moment output fluctuation of the inertia actuating mechanism is caused, the attitude deviation of the spacecraft is caused, and even the spacecraft is out of control. Therefore, new requirements are placed on the angular stiffness of the bearing unit.
In fact, although the angular stiffness measuring device in the prior art, such as the angular stiffness measuring experiment table of the angular contact ball bearing disclosed in the chinese utility model patent with the publication number CN209247353U, or the angular stiffness detecting device and method disclosed in the chinese utility model patent application with the publication number CN112414705A, applies a radial loading force to the test main shaft and measures the deflection angle of the test main shaft, the angular stiffness measuring device mainly measures the angular stiffness of a single bearing in a targeted manner, and is not suitable for directly measuring the angular stiffness of the bearing unit with the matched angular contact ball bearing and the inner and outer spacers, and therefore, the corresponding angular stiffness measuring device needs to be developed corresponding to the bearing unit to meet the measurement requirement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bearing unit angular stiffness measuring device to angular stiffness measuring device among the solution prior art only measures single bearing and is not suitable for carrying out angular stiffness measuring's technical problem to the bearing unit.
In order to achieve the above object, the utility model provides a bearing unit angular rigidity measuring device's technical scheme is: a bearing unit angular rigidity measuring device comprising:
the device comprises an outer bearing seat, a test main shaft, a radial loading mechanism and displacement sensors at two ends;
the outer bearing seat is provided with a mounting hole and is used for tightly fitting and penetrating two bearing outer rings of the bearing unit to be tested and an outer space ring between the two bearing outer rings;
outer ring blocking structures are respectively arranged at two ends of the outer bearing seat corresponding to the mounting holes, the two outer ring blocking structures are used for correspondingly jacking the opposite outer sides of the two bearing outer rings one by one so as to axially position the two bearing outer rings and the outer space ring in the axial direction of the mounting holes, and the outer ring blocking structure at least one end is an outer side detachable blocking structure;
the testing main shaft is coaxially inserted into the mounting hole in a clearance mode, and the testing main shaft has a set length, so that two ends of the testing main shaft respectively penetrate out of the mounting hole;
the test main shaft is used for being tightly fitted in two bearing inner rings of the bearing unit to be tested and an inner spacer ring between the two bearing inner rings;
the test main shaft is provided with two inner ring blocking structures corresponding to the two ends of the mounting hole respectively, the two inner ring blocking structures are used for correspondingly jacking the opposite outer sides of the two bearing inner rings one by one so as to axially position the two bearing inner rings and the inner spacing ring in the axial direction of the test main shaft, and the inner ring blocking structure at least one end is an inner side detachable blocking structure;
the radial loading mechanism is positioned outside the mounting hole and used for applying a radial loading acting force to the test main shaft along the radial direction of the test main shaft;
the two-end displacement sensors are located on the outer sides of the two ends of the mounting hole in a one-to-one correspondence mode, when the radial loading mechanism applies acting force, the two-end displacement touch sensors are used for detecting radial displacement of the two ends of the testing spindle corresponding to the initial setting position of the testing spindle, and the radial displacement is perpendicular to the axial direction of the testing spindle.
The beneficial effects are that: the utility model provides a bearing unit angle rigidity measuring device utilizes test main shaft and outer bearing frame to cooperate when using, can be with forming two bearings, interior spacer ring and the assembly of outer spacer ring of bearing unit, utilizes inboard removable block structure and the removable block structure in the outside to realize the pretension assembly under the condition of bearing unit fastening assembly, simulates the operating condition of bearing unit better, guarantees angle rigidity measurement accuracy, conveniently carries out angle rigidity measurement to bearing unit.
As a further improvement, the inner detachable stopping structure is an inner thread stopping structure, and the inner thread stopping structure is used for being assembled on the test spindle in a threaded fastening mode and applying a pre-tightening acting force to the corresponding bearing inner ring.
The beneficial effects are that: the fastening is realized by utilizing the inner side thread stop structure, and the pre-tightening loading is conveniently realized.
As a further improvement, the inner thread stop structure is a lock nut, and the lock nut is spirally assembled on the test spindle.
The beneficial effects are that: and the locking nut is adopted to realize fastening and pre-tightening loading, so that the use is convenient.
As a further improvement, one of the two inner ring stop structures is the lock nut, the other inner ring stop structure is a stop shoulder, and the stop shoulders are integrally arranged on the test main shaft.
The beneficial effects are that: by means of the mode that the stop shaft shoulder is matched with the locking nut, the whole structure is simple, and clamping and fixing are conveniently achieved.
As a further improvement, the outer detachable stop structure is an annular outer gland, and the outer gland is detachably and fixedly installed at the hole edge of the corresponding end of the installation hole through a fastening screw.
The beneficial effects are that: and the outer gland is pressed on the corresponding end hole edge of the mounting hole by using a fastening screw, so that the bearing outer ring and the outer space ring can be fixed and assembled conveniently.
As a further improvement, one of the two outer ring stop structures is the outer gland, and the other is an inner stop flange arranged on the inner side of the outer bearing seat.
The beneficial effects are that: the outer side gland is matched with the inner stop flange, so that the two bearing outer rings of the bearing unit are fixed, and the assembly is convenient.
As a further improvement, the outer side detachable blocking structure is an outer ring locking nut, the outer ring locking nut is used for being in threaded connection with the outer bearing seat, and the outer ring locking nut is provided with a jacking end and used for applying an axial pre-tightening acting force to the corresponding bearing outer ring.
The beneficial effects are that: the outer-side detachable blocking structure adopts the outer ring locking nut, the outer ring locking nut is conveniently connected with the outer bearing seat, a pre-tightening acting force is conveniently applied to the outer ring of the bearing, and the rigidity of the bearing unit arranged face to face of the whole rigidity measuring device can be tested.
As a further improvement, the outer bearing seat is fixedly arranged on an outer bearing seat support frame, and the outer bearing seat support frame is fixed on a corresponding foundation.
The beneficial effects are that: the outer bearing seat is conveniently and fixedly installed by the outer bearing seat supporting frame.
As a further improvement, two sensor supporting frames are respectively arranged corresponding to the displacement sensors at the two ends and used for correspondingly supporting and mounting the displacement sensors at the two ends one by one.
The beneficial effects are that: two sensor support frames are arranged corresponding to the displacement sensors at the two ends, so that the corresponding fixed installation is convenient.
As a further improvement, the bearing unit angular stiffness measuring device comprises a data acquisition module, the two-end displacement sensors transmit data to the data acquisition module, loading force sensors are arranged corresponding to the radial loading mechanisms to detect radial loading force, the loading force sensors transmit data to the data acquisition module, and the data acquisition module is connected with an upper computer.
The beneficial effects are that: and the data acquisition module is matched with the upper computer, so that automatic testing and recording are conveniently realized.
Drawings
Fig. 1 is a schematic structural diagram of the device for measuring angular stiffness of a bearing unit provided by the present invention.
Description of reference numerals:
1. testing the main shaft; 2. locking the nut; 3. an outer gland; 4. fastening screws; 5. an outer bearing seat; 6. an outer space ring; 7. an inner spacer ring; 8. a first angular contact ball bearing; 9. an upper end displacement sensor; 10. a second angular contact ball bearing; 11. a lower end displacement sensor; 12. an inner stop flange; 13. stopping the shaft shoulder; 14. a data acquisition module; 15. an upper computer; 16. a radial loading mechanism; 17. a radial loading mechanism support frame; 18. an outer bearing block support frame; 19. an upper end displacement sensor support frame; 20. a lower end displacement sensor support frame; 21. and (6) mounting the table top.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
The present invention will be described in further detail with reference to examples.
The utility model provides a bearing unit angle rigidity measuring device's embodiment 1:
as shown in fig. 1, the angular stiffness measuring device of the bearing unit in this embodiment mainly includes an outer bearing seat 5, a test spindle 1, a radial loading mechanism 16, and a two-end displacement sensor.
In the embodiment, the bearing unit comprises two angular contact ball bearings which are paired back to back, namely a first angular contact ball bearing 8 and a second angular contact ball bearing 10, each angular contact ball bearing comprises a bearing inner ring, a bearing outer ring and balls, an inner spacer 7 is supported and arranged between the two bearing inner rings, an outer spacer 6 is supported and arranged between the two bearing outer rings, during measurement, the test spindle 1 is tightly sleeved in the inner spacer 7 and the two bearing inner rings in a penetrating manner, the two bearing outer rings and the outer spacer 6 are tightly sleeved in the bearing seats in a penetrating manner, a radial loading mechanism is used for loading, and a displacement sensor is used for measuring loading displacement.
The outer bearing seat 5 is used for supporting and installing a bearing unit, specifically, the outer bearing seat 5 is fixedly installed on an outer bearing seat support frame 18, the outer bearing seat support frame 18 is an installation table surface 21 as a corresponding base, the outer bearing seat 5 is provided with an installation hole, as shown in fig. 1, the installation hole extends along the up-down direction, two ends of the outer bearing seat 5 corresponding to the installation hole are respectively provided with an outer ring stop structure, the outer ring stop structure at the lower side is an inner stop flange 12, the inner stop flange 12 is arranged at the inner side of the outer bearing seat 5, the outer ring stop structure at the upper side is an annular outer gland 3, the outer gland 3 is detachably and fixedly installed at the hole edge of the corresponding end of the installation hole through a fastening screw 4, the outer gland 3 is provided with a plurality of screw installation holes, the hole edge of the corresponding end of the outer bearing seat 5 is provided with a plurality of screw holes, the plurality of screw holes are arranged in one-to-one correspondence with the plurality of screw installation holes, conveniently wear dress fastening screw 4 to with outside gland 3 detachably fixed mounting at the corresponding tip of outer bearing frame 5, the outside gland 3 of here uses as the removable block structure in the outside, during the assembly, can dismantle outside gland 3 earlier, after the installation, again with outside gland 3 fixed mounting on outer bearing frame 5 can.
The test spindle 1 is used for being inserted into a mounting hole of the outer bearing seat 5 with a gap, the test spindle 1 has a set length, so that two ends of the test spindle 1 respectively penetrate through the mounting hole, on one hand, radial acting force is applied by the radial loading mechanism conveniently, and on the other hand, displacement sensors at two ends detect displacement values of corresponding positions of the test spindle 1 conveniently.
The two ends of the test main shaft 1 corresponding to the mounting hole are respectively provided with an inner ring blocking structure, the inner ring blocking structure at the lower side is a blocking shaft shoulder 13, the blocking shaft shoulder 13 is integrally arranged on the test main shaft 1, the inner ring blocking structure at the upper side is an inner side thread blocking structure, the inner side thread blocking structure is a locking nut 2, the upper part of the test main shaft 1 is provided with an outer thread section, and the locking nut 2 is spirally assembled on the outer thread section so as to clamp and position two bearings in pair. The locking nut 2 is used as an inner side detachable blocking structure and is used for being matched with the blocking shaft shoulder 13 to apply opposite clamping acting force to the two bearing inner rings and the inner spacer 7, so that fastening and pre-tightening are conveniently realized.
It should be noted that, the paired bearings in this embodiment are arranged back to back, and therefore, in consideration of correspondence to actual use occasions, when the lock nut 2 is rotated, the tightness of rotation needs to be paid attention to, and pre-tightening loading is realized, so that the lock nut is more suitable for actual scenes.
In this embodiment, the radial loading mechanism may specifically adopt a radial loading oil cylinder, the radial loading mechanism 16 is located outside the outer bearing seat 5 and supported by a radial loading mechanism support frame 17, and the radial loading mechanism 16 is configured to apply a radial loading acting force to the test spindle 1 along the radial direction of the test spindle.
The two-end displacement sensor comprises an upper end displacement sensor 9 and a lower end displacement sensor 11, the two displacement sensors displace the outer sides of two ends of the mounting hole in a one-to-one correspondence manner, the two corresponding two-end displacement sensors are respectively provided with two sensor support frames, namely an upper end displacement sensor support frame 19 and a lower end displacement sensor support frame 20, the upper end displacement sensor 9 is installed on the upper end displacement sensor support frame 19, the lower end displacement sensor 11 is installed on the lower end displacement sensor support frame 20, and the two sensor support frames 20 are also arranged on a mounting table board serving as a corresponding base.
In addition, the bearing unit angular stiffness measuring device further comprises a data acquisition module 14 and an upper computer 14, the displacement sensors at the two ends transmit data to the data acquisition module 14, a loading force sensor is arranged corresponding to the radial loading mechanism 16 to detect radial loading force, the loading force sensor also transmits data to the data acquisition module 14, and the data acquisition module 14 is connected with the upper computer 14 to process the data by the upper computer.
When the radial loading mechanism 16 applies a radial loading acting force, the two-end displacement touch sensors are used for detecting radial displacements of the two ends of the test spindle 1 corresponding to the initial set positions of the test spindle, and the radial displacements are perpendicular to the axial direction of the test spindle 1.
In fact, for the bearing unit, its angular stiffness KθIs defined as follows:
in the formula, M is a bending moment applied to the bearing; θ is a yaw angle of the bearing unit in the axial direction.
The principle of angular stiffness measurement of a bearing unit is shown in FIG. 1. for the bearing unit, the radial center plane A of the bearing unit is the symmetry plane of the bearing unit, and the distances between the upper-end displacement sensor and the applied radial loading force F and the radial center plane of the bearing unit are both L1The radial loading force F generates a bending moment with respect to the bearing unit as follows:
M＝FL1 (2)
the distance between the lower end displacement sensor and the radial central plane A of the bearing unit is L2The measured values of the displacement sensors at the upper and lower ends are respectively A1And A2And then the deflection angle of the main shaft of the bearing unit is as follows:
to this end, the calculated values of equations (2) and (3) can be taken into equation (1) to calculate the angular stiffness of the bearing unit.
To reduce measurement errors, different forces F may be applied to obtain a set of bending moments M and yaw angles θ, and then the angular stiffness is calculated according to a least squares linear fit method:
wherein n is the number of times different forces F are applied; θ is a yaw angle of the bearing unit in the axial direction.
In the specific measurement, the following measurement steps can be referred to:
1. applying a group of radial forces F from 10N to 200N at an interval of 10N to a bearing unit to be tested, and calculating a bending moment M generated on the bearing unit by using a formula (2);
2. measuring the position variation A of the bearing unit along the axial direction by the displacement sensors at the upper and lower ends1And A2Calculating the deflection angle theta of the main shaft of the bearing unit by using the formula (3);
3. the bearing unit angular stiffness is calculated using equation (4).
In the device for measuring angular stiffness of a bearing unit provided by this embodiment, the outer bearing seat, the outer ring blocking structure, the test spindle, and the inner ring blocking structure are used in combination, so that the whole bearing unit to be tested can be effectively mounted on the outer bearing seat and the test spindle, and after pre-tightening loading is realized by using the lock nut, the actual working condition of the bearing unit is simulated as much as possible by testing, and the measurement accuracy of angular stiffness of the bearing unit is improved.
The utility model provides a bearing unit angle rigidity measuring device's embodiment 2:
the difference from example 1 is mainly that: in the embodiment 1, in the two inner ring blocking structures on the test spindle, the upper lock nut is an inner detachable blocking structure, and the lower lock nut is a shoulder, which is used as a fixed blocking structure. In this embodiment, the upper side and the lower side both adopt lock nuts as inner ring stop structures to form stop limit for the two bearing inner rings and the inner spacer.
The utility model provides a bearing unit angle rigidity measuring device's embodiment 3:
the difference from example 1 is mainly that: in embodiment 1, an outer gland is provided on the upper side of the outer bearing seat to cooperate with an inner stop flange on the lower side, thereby positioning and clamping the two bearing outer rings and the outer spacer ring. In this embodiment, corresponding to the two bearing outer rings and the outer spacer ring, outer pressing covers may be respectively disposed on the upper and lower sides, and at this time, the upper and lower sides both adopt an outer detachable blocking structure.
The utility model provides a bearing unit angle rigidity measuring device's embodiment 4:
the difference from example 1 is mainly that: in example 1, a lock nut screw-fitted to a test spindle was used to apply a loading force to the bearing inner race. In this embodiment, when applied to the bearing units assembled face to face, an outer ring locking nut is selected as the outer detachable stop structure, the outer ring locking nut is used for being in threaded connection with the outer bearing seat, and the outer ring locking nut has a pressing end for applying an axial pretension acting force to the corresponding bearing outer ring.
Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A bearing unit angular stiffness measuring device, comprising:
the device comprises an outer bearing seat (5), a test main shaft (1), a radial loading mechanism and displacement sensors at two ends;
the outer bearing seat (5) is provided with a mounting hole and is used for tightly fitting and penetrating two bearing outer rings of the bearing unit to be tested and an outer space ring (6) between the two bearing outer rings;
outer ring blocking structures are respectively arranged at two ends, corresponding to the mounting holes, of the outer bearing seat (5), the two outer ring blocking structures are used for correspondingly jacking the opposite outer sides of the two bearing outer rings one by one so as to axially position the two bearing outer rings and the outer spacing ring (6) in the mounting hole, and the outer ring blocking structure at least one end is an outer side detachable blocking structure;
the testing main shaft (1) is coaxially inserted into the mounting hole in a clearance mode, and the testing main shaft (1) has a set length, so that two ends of the testing main shaft (1) penetrate out of the mounting hole respectively;
the test main shaft (1) is used for being tightly fitted in two bearing inner rings of the bearing unit to be tested and an inner spacer (7) between the two bearing inner rings;
the two ends, corresponding to the mounting holes, of the test main shaft (1) are respectively provided with an inner ring blocking structure, the two inner ring blocking structures are used for correspondingly jacking the opposite outer sides of the two bearing inner rings one by one so as to axially position the two bearing inner rings and the inner spacer (7) in the axial direction of the test main shaft (1), and the inner ring blocking structure at least one end is an inner side detachable blocking structure;
the radial loading mechanism is positioned outside the mounting hole and used for applying a radial loading acting force to the test spindle (1) along the radial direction of the test spindle (1);
the two-end displacement sensors are located on the outer sides of the two ends of the mounting hole in a one-to-one correspondence mode, when the radial loading mechanism applies acting force, the two-end displacement touch sensors are used for detecting radial displacement of the two ends of the testing spindle corresponding to the initial setting position of the testing spindle, and the radial displacement is perpendicular to the axial direction of the testing spindle (1).
2. The angular stiffness measurement device of a bearing unit according to claim 1, wherein the inner removable stop structure is an inner threaded stop structure for threaded fastening assembly on the test spindle and applying a pretensioning force to the respective inner bearing ring.
3. The bearing unit angular stiffness measuring device according to claim 2, wherein the inner thread stop structure is a lock nut (2), the lock nut (2) being screw-fitted on the test spindle (1).
4. The device for measuring angular stiffness of a bearing unit according to claim 3, wherein one of the two inner ring stop structures is the lock nut (2), the other inner ring stop structure is a stop shoulder (13), and the stop shoulder (13) is integrally disposed on the test spindle (1).
5. Bearing unit angular stiffness measuring device according to any of claims 1 to 4, wherein the outer removable stop structure is an annular outer gland (3), the outer gland (3) being removably fixedly mounted at the rim of the respective end of the mounting hole by means of fastening screws (4).
6. The device for measuring angular stiffness of a bearing unit according to claim 5, wherein one of the two outer ring stop structures is the outer gland (3), and the other is an inner stop flange (12) provided inside the outer bearing seat (5).
7. The device for measuring angular rigidity of a bearing unit according to any one of claims 1 to 4, wherein the outer detachable blocking structure is an outer ring locking nut for being in threaded connection with the outer bearing seat, the outer ring locking nut having a pressing end for applying an axial pretensioning force to the corresponding bearing outer ring.
8. Bearing unit angular stiffness measuring device according to any of claims 1 to 4, wherein the outer bearing housing (5) is fixedly mounted on an outer bearing housing support frame (18), the outer bearing housing support frame (18) being fixed on a corresponding foundation.
9. The bearing unit angular stiffness measuring device according to any one of claims 1 to 4, wherein two sensor support frames are provided corresponding to the two-end displacement sensors, respectively, for supporting and mounting the two-end displacement sensors in a one-to-one correspondence.
10. The bearing unit angular stiffness measuring device according to any one of claims 1 to 4, wherein the bearing unit angular stiffness measuring device comprises a data acquisition module, the two-end displacement sensor transmits data to the data acquisition module (14), a loading force sensor is arranged corresponding to the radial loading mechanism (16) to detect radial loading force, the loading force sensor transmits data to the data acquisition module (14), and the data acquisition module (14) is connected with an upper computer (15).
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| CN202121050045.1U CN214793696U (en) | 2021-05-17 | 2021-05-17 | Bearing unit angular stiffness measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433783A (en) * | 2023-08-29 | 2024-01-23 | 大连海事大学 | Tapered roller bearing positioning pre-tightening adjustment method and device based on axial rigidity detection |
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2021
- 2021-05-17 CN CN202121050045.1U patent/CN214793696U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433783A (en) * | 2023-08-29 | 2024-01-23 | 大连海事大学 | Tapered roller bearing positioning pre-tightening adjustment method and device based on axial rigidity detection |
| CN117433783B (en) * | 2023-08-29 | 2024-05-24 | 大连海事大学 | Tapered roller bearing positioning pre-tightening adjustment method and device based on axial rigidity detection |
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