CN109506545B - Adjustable loading device for differential measurement of bearing - Google Patents
Adjustable loading device for differential measurement of bearing Download PDFInfo
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- CN109506545B CN109506545B CN201811601654.4A CN201811601654A CN109506545B CN 109506545 B CN109506545 B CN 109506545B CN 201811601654 A CN201811601654 A CN 201811601654A CN 109506545 B CN109506545 B CN 109506545B
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- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an adjustable loading device for differential measurement of a bearing, which comprises a supporting frame, wherein a positioning clamp which can be replaced to adapt to bearings with different specifications is arranged at the bottom of an inner cavity of the supporting frame, the bearing is clamped in the positioning clamp, and a loading assembly which can vertically move and load the top of the positioning clamp is arranged at the top of the supporting frame. The adjustable loading device has the advantages of convenience in operation, strong universality, accuracy in measurement and wide application range.
Description
Technical Field
The invention mainly relates to differential measurement experiment technology of a bearing under different load conditions, in particular to an adjustable loading device for differential measurement of the bearing.
Background
According to the requirements of the tail differential measurement instruction in a transmission system, the experiments of differential measurement of specified parameters under different load conditions (100N-300N) and numerical value recording are required to be completed for 5 series of 10 code-numbered bearings involved in the transmission system. The method adopted on site is a loading mode that an equal weight is used for standing on a bearing. The defects and shortcomings of the method are mainly reflected in: 1. the size requirements of the bearings with different types on the weights are different, and the weight requirements of the weights are different due to different load requirements, so that the weights are quite numerous; 2. the weight of the weight cannot accurately meet the requirement of a load value on the instruction book; 3. the weights are heavy (100N is approximately equal to 10 kg), and on the premise of limited diameter (the diameter of the weights is not larger than the diameter of the outer ring of the bearing), the specified load can be obtained only by increasing the height of the weights or stacking a plurality of weights, so that the weight is inconvenient to use on site and has potential safety hazards.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the adjustable loading device for bearing differential measurement, which has the advantages of convenient operation, strong universality, accurate measurement and wide application range.
In order to solve the technical problems, the invention adopts the following technical scheme:
the adjustable loading device for differential measurement of the bearing comprises a supporting frame, wherein a positioning clamp capable of being replaced to adapt to bearings of different specifications is arranged at the bottom of an inner cavity of the supporting frame, the bearing clamp is arranged in the positioning clamp, and a loading assembly capable of moving vertically and loading the top of the positioning clamp is arranged at the top of the supporting frame.
As a further improvement of the above technical scheme:
the loading assembly comprises a loading piece, a pressure sensor and a floating pressure head, wherein the loading piece is arranged at the top of the supporting frame and can vertically move along the supporting frame, the pressure sensor is fixedly connected with the bottom of the loading piece, the floating pressure head is arranged at the bottom of the pressure sensor, and the floating pressure head is pressed at the top of the positioning clamp during loading.
The load applying component comprises a force applying screw, a connecting table and a back-buckling bolt, wherein the force applying screw is in threaded connection with the top of the supporting frame, an idle through cavity is formed in the center of the connecting table, the back-buckling bolt is back-buckled in the idle through cavity and in threaded connection with the force applying screw, the back-buckling bolt idles in the idle through cavity when the force applying screw rotates, and the pressure sensor is in fastening connection with the connecting table through a screw.
The lateral part of connection platform is provided with spacing chamber, install on the supporting rack and stretch to the stop pin in the spacing chamber.
The bottom of the connecting table is provided with a concave table, and the pressure sensor is submerged in the concave table and is fixedly connected with the connecting table through a screw.
The top surface of the floating pressure head is set to be a spherical surface, the bottom surface of the floating pressure head is set to be a plane, the floating pressure head is connected with the pressure sensor through a screw, and a gap is reserved between the top surface of the floating pressure head and the pressure sensor.
The positioning fixture comprises a positioning mandrel, a positioning ring and a pressing block, wherein the positioning mandrel is arranged at the bottom of an inner cavity of the supporting frame, the positioning ring is sleeved on the positioning ring, the bearing is sleeved on the periphery of the positioning ring, the bottom of an inner ring of the bearing is pressed at the bottom of the inner cavity of the supporting frame, the pressing block is pressed at the top of an outer ring of the bearing, and the loading assembly is pressed at the top of the pressing block during loading.
The bottom of the pressing block is provided with a positioning table sleeved with the annular surface of the bearing inner ring, the outer side of the positioning table is provided with a clearance part for avoiding the top of the bearing inner ring, and the outer side of the clearance part is provided with a pressing table pressed on the top of the bearing outer ring.
The supporting frame comprises a bearing bottom plate, a side frame is arranged on the side part of the bearing bottom plate, a top cover is arranged on the side frame, and the loading assembly is arranged on the top cover.
Compared with the prior art, the invention has the advantages that:
The invention relates to an adjustable loading device for differential measurement of a bearing, which comprises a supporting frame, wherein a positioning clamp capable of being replaced to adapt to bearings with different specifications is arranged at the bottom of an inner cavity of the supporting frame, the bearing is clamped in the positioning clamp, and a loading assembly capable of moving vertically and loading the top of the positioning clamp is arranged at the top of the supporting frame. When the bearing positioning device is used, a positioning fixture matched with the specification of the predicted bearing is selected, the positioning fixture is arranged at the bottom of the inner cavity of the supporting frame, then the predicted bearing is positioned and clamped in the positioning fixture, and then the loading assembly is operated to vertically move downwards to load the top of the positioning fixture and record data. Compared with the traditional mode, the loading device is convenient to operate and has strong universality; the loading assembly can adjust and accurately reach a specified load value, so that the measurement accuracy is improved; positioning and pressing of bearings with different sizes can be completed by replacing the positioning clamp; the bottom of the inner cavity of the supporting frame is used as a measuring standard, so that the measurement of the specified size can be completed by using a conventional height ruler, and the experimental requirement is met.
Drawings
FIG. 1 is a schematic cross-sectional view of an adjustable load applying device for differential measurement of bearings according to the present invention.
Fig. 2 is a schematic top view of the adjustable loading device for differential measurement of bearings according to the present invention.
The reference numerals in the drawings denote:
1. A support frame; 11. a load-bearing bottom plate; 12. a side frame; 13. a top cover; 2. a bearing; 3. positioning a clamp; 31. positioning a mandrel; 32. a positioning ring; 33. briquetting; 331. a positioning table; 332. a clearance part; 333. a pressing table; 334. a U-shaped groove; 4. a loading assembly; 41. a loading member; 411. a force application screw; 412. a connection station; 4121. idling through cavity; 4122. a spacing cavity; 4123. a concave table; 413. reversely buckling the bolt; 42. a pressure sensor; 43. a floating pressure head; 5. an anti-rotation pin.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, an embodiment of an adjustable loading device for differential measurement of bearings of the present invention comprises a support frame 1, wherein a positioning fixture 3 capable of being replaced to adapt to bearings 2 with different specifications is installed at the bottom of an inner cavity of the support frame 1, the bearings 2 are clamped in the positioning fixture 3, and a loading assembly 4 capable of moving vertically and loading the top of the positioning fixture 3 is installed at the top of the support frame 1. When the device is used, the positioning fixture 3 matched with the specification of the predicted bearing is selected, the positioning fixture 3 is arranged at the bottom of the inner cavity of the supporting frame 1, then the predicted bearing 2 is positioned and clamped in the positioning fixture 3, and then the loading assembly 4 is operated to vertically move downwards to implement load on the top of the positioning fixture 3 and record data. Compared with the traditional mode, the loading device is convenient to operate and has strong universality; the loading assembly 4 can adjust and accurately reach a specified load value, so that the measurement accuracy is improved; positioning and pressing of bearings 2 with different sizes can be completed by replacing the positioning clamp 3; the bottom of the inner cavity of the supporting frame 1 is used as a measuring standard, so that the measurement of the specified size can be completed by using a conventional height ruler, and the experimental requirement is met.
In this embodiment, the loading assembly 4 includes a loading member 41, a pressure sensor 42 and a floating ram 43, where the loading member 41 is mounted on the top of the supporting frame 1 and can move vertically along the supporting frame, the pressure sensor 42 is fixedly connected to the bottom of the loading member 41, the floating ram 43 is mounted on the bottom of the pressure sensor 42, and the floating ram 43 presses on the top of the positioning fixture 3 during loading. In this structure, the load applying member 41 drives the pressure sensor 42 and the floating ram 43 to move downward as a whole, the pressure sensor 42 has a digital display function, can adjust and accurately reach a prescribed load value, and improves controllability, while the floating ram 43 has a fine adjustment function to make up for a possible inclination in the downward movement process, so as to ensure that the load applying force to the bearing 2 acts vertically on the bearing 2.
In this embodiment, the load applying member 41 includes a force applying screw 411, a connecting table 412, and a back-fastening bolt 413, the force applying screw 411 is in threaded connection with the top of the support frame 1, an idle through cavity 4121 is provided in the center of the connecting table 412, the back-fastening bolt 413 is back-fastened in the idle through cavity 4121 and in threaded connection with the force applying screw 411, the back-fastening bolt 413 idles in the idle through cavity 4121 when the force applying screw 411 rotates, and the pressure sensor 42 is fastened and connected with the connecting table 412 by a screw. In this structure, when the force application screw 411 is screwed down, the back-fastening bolt 413 idles in the idle through cavity 4121, the force application screw 411 pushes the connection table 412 downward, the connection table 412 then drives the pressure sensor 42 and the floating pressure head 43 to move down integrally to realize load application, and through smart cooperation of the back-fastening bolt 413 and the idle through cavity 4121, the connection table 412 and the force application screw 411 are ensured to be connected, and meanwhile, the connection table 412 can be ensured to have only vertical movement, so that the structure is simple and the design is smart.
In this embodiment, a limiting cavity 4122 is provided at a side portion of the connection table 412, and an anti-rotation pin 5 extending into the limiting cavity 4122 is mounted on the support frame 1. In this structure, the cooperation of the anti-rotation pin 5 and the limiting cavity 4122 further ensures that the connection table 412 has only vertical movement, and prevents the connection table 412 from rotating along with the force application screw 411.
In this embodiment, a recess 4123 is formed at the bottom of the connection table 412, and the pressure sensor 42 is placed in the recess 4123 and fastened to the connection table 412 by a screw. The concave table 4123 is convenient for quick positioning and mounting of the pressure sensor 42 on one hand, and on the other hand, the pressure sensor 42 can be guaranteed to be vertically and linearly stressed, and cannot be subjected to transverse shearing force on a joint surface, so that measurement accuracy is further improved.
In this embodiment, the top surface of the floating ram 43 is set to be a spherical surface, the bottom surface of the floating ram 43 is set to be a flat surface, the floating ram 43 is connected to the pressure sensor 42 by a screw, and a gap is left between the top surface of the floating ram 43 and the pressure sensor 42. The top surface of the floating ram 43 is a spherical surface, and the bottom surface is a plane surface, when the plane part moves downwards to be in contact with the positioning fixture 3, the spherical surface structure has the function of fine adjustment in the gap to compensate the inclination possibly caused by screw thread screwing, so that the loading force on the bearing 2 is ensured to vertically act on the bearing 2.
In this embodiment, the positioning fixture 3 includes a positioning mandrel 31, a positioning ring 32 and a pressing block 33, the positioning mandrel 31 is installed at the bottom of the inner cavity of the supporting frame 1, the positioning ring 32 is sleeved on the positioning ring 32, the bearing 2 is sleeved on the periphery of the positioning ring 32, the bottom of the inner ring of the bearing 2 is pressed at the bottom of the inner cavity of the supporting frame 1, the pressing block 33 is pressed at the top of the outer ring of the bearing 2, and the loading assembly 4 is pressed at the top of the pressing block 33 during loading. In this structure, the positioning mandrel 31 is in threaded connection with the bottom of the inner cavity of the supporting frame 1, when the bearings 2 with different specifications are matched, only the positioning ring 32 and the pressing block 33 are needed to be replaced, the bearing 2 is sleeved on the periphery of the positioning ring 32 to realize the rapid positioning of the bearing 2, the bottom of the inner ring of the bearing 2 is pressed on the bottom of the inner cavity of the supporting frame 1, the pressing block 33 is pressed on the top of the outer ring of the bearing 2, and the loading assembly 4 is matched to ensure that the loading force acts on the outer ring of the bearing 2.
In this embodiment, the periphery of the pressing block 33 is provided with a U-shaped groove 334 extending to the top of the outer ring of the bearing 2, exposing the top of the outer ring of the bearing 2, and the differential measurement and recording of the parameter H of the bearing 2 can be completed at four notch positions by using a conventional height measuring rule, thereby completing the experimental requirements on the specification.
In this embodiment, a positioning table 331 sleeved on the ring surface of the inner ring of the bearing 2 is disposed at the bottom of the pressing block 33, a clearance portion 332 for avoiding the top of the inner ring of the bearing 2 is disposed at the outer side of the positioning table 331, and a pressing table 333 for pressing the top of the outer ring of the bearing 2 is disposed at the outer side of the clearance portion 332. In this structure, the positioning table 331 facilitates the clamping positioning of the pressing block 33, and the cooperation of the clearance portion 332 and the pressing table 333 can ensure that the loading force acts on the outer ring of the bearing 2.
In this embodiment, the support frame 1 includes a load floor 11, a side frame 12 is disposed on a side portion of the load floor 11, a top cover 13 is disposed on the side frame 12, and the loading assembly 4 is mounted on the top cover 13. In this structure, the bearing bottom plate 11, the side frame 12 and the top cover 13 together form a supporting frame 1 of a gantry structure, and the structure is simple and reliable.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (5)
1. An adjustable load device for differential measurement of bearings, which is characterized in that: the device comprises a supporting frame (1), wherein a positioning clamp (3) capable of being replaced to adapt to bearings (2) with different specifications is arranged at the bottom of an inner cavity of the supporting frame (1), the bearings (2) are clamped in the positioning clamp (3), a loading assembly (4) capable of moving vertically and loading the top of the positioning clamp (3) is arranged at the top of the supporting frame (1), the loading assembly (4) comprises a loading piece (41), a pressure sensor (42) and a floating pressure head (43), the loading piece (41) is arranged at the top of the supporting frame (1) and can move vertically, the pressure sensor (42) is fixedly connected with the bottom of the loading piece (41), the floating pressure head (43) is arranged at the bottom of the pressure sensor (42), and the floating pressure head (43) is pressed at the top of the positioning clamp (3) during loading;
The load applying piece (41) comprises a force applying screw rod (411), a connecting table (412) and a back-buckling bolt (413), wherein the force applying screw rod (411) is in threaded connection with the top of the supporting frame (1), an idle through cavity (4121) is arranged at the center of the connecting table (412), the back-buckling bolt (413) is back-buckled in the idle through cavity (4121) and is in threaded connection with the force applying screw rod (411), the back-buckling bolt (413) idles in the idle through cavity (4121) when the force applying screw rod (411) rotates, and the pressure sensor (42) is in fastening connection with the connecting table (412) through a screw;
The top surface of the floating pressure head (43) is set to be a spherical surface, the bottom surface of the floating pressure head (43) is set to be a plane, the floating pressure head (43) is connected with the pressure sensor (42) through a screw, and a gap is reserved between the top surface of the floating pressure head (43) and the pressure sensor (42);
The positioning clamp (3) comprises a positioning mandrel (31), a positioning ring (32) and a pressing block (33), wherein the positioning mandrel (31) is arranged at the bottom of an inner cavity of the supporting frame (1), the positioning ring (32) is sleeved on the positioning ring (32), the bearing (2) is sleeved on the periphery of the positioning ring (32), the bottom of the inner ring of the bearing (2) is pressed at the bottom of the inner cavity of the supporting frame (1), the pressing block (33) is pressed at the top of the outer ring of the bearing (2), and the loading assembly (4) is pressed at the top of the pressing block (33) during loading;
The bottom of the pressing block (33) is provided with a positioning table (331) sleeved with the annular surface of the inner ring of the bearing (2), the outer side of the positioning table (331) is provided with a clearance part (332) avoiding the top of the inner ring of the bearing (2), and the outer side of the clearance part (332) is provided with a pressing table (333) pressed at the top of the outer ring of the bearing (2).
2. The adjustable load applying device for differential bearing measurement according to claim 1, wherein: the side of the connecting table (412) is provided with a limiting cavity (4122), and the supporting frame (1) is provided with an anti-rotation pin (5) extending into the limiting cavity (4122).
3. An adjustable load device for differential bearing measurement according to claim 2, characterized in that: the bottom of the connecting table (412) is provided with a concave table (4123), and the pressure sensor (42) is sunk in the concave table (4123) and is fixedly connected with the connecting table (412) through a screw.
4. An adjustable load device for differential bearing measurements according to any one of claims 1 to 3, characterized in that: the supporting frame (1) comprises a bearing bottom plate (11), a side frame (12) is arranged on the side portion of the bearing bottom plate (11), a top cover (13) is arranged on the side frame (12), and the loading assembly (4) is installed on the top cover (13).
5. The adjustable load applying device for differential bearing measurement according to claim 4, wherein: the supporting frame (1) comprises a bearing bottom plate (11), a side frame (12) is arranged on the side portion of the bearing bottom plate (11), a top cover (13) is arranged on the side frame (12), and the loading assembly (4) is installed on the top cover (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811601654.4A CN109506545B (en) | 2018-12-26 | 2018-12-26 | Adjustable loading device for differential measurement of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811601654.4A CN109506545B (en) | 2018-12-26 | 2018-12-26 | Adjustable loading device for differential measurement of bearing |
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| Publication Number | Publication Date |
|---|---|
| CN109506545A CN109506545A (en) | 2019-03-22 |
| CN109506545B true CN109506545B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811601654.4A Active CN109506545B (en) | 2018-12-26 | 2018-12-26 | Adjustable loading device for differential measurement of bearing |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053015A (en) * | 2009-10-30 | 2011-05-11 | 中国石油化工股份有限公司 | Tester for thrust bearing |
| CN205049091U (en) * | 2015-10-26 | 2016-02-24 | 人本集团有限公司 | Wheel hub bearing negative clearance detection device |
| CN209416194U (en) * | 2018-12-26 | 2019-09-20 | 中国航发中传机械有限公司 | Adjustable applied load device for bearing differential measurement |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204757854U (en) * | 2015-06-15 | 2015-11-11 | 西安航空动力控制科技有限公司 | Measurement device for it preloads to be used for angular contact ball bearing to apply |
| CN205014971U (en) * | 2015-09-29 | 2016-02-03 | 洛阳轴研科技股份有限公司 | Middle -size and small -size angular contact bearing protrusion is weighed and is carried measuring equipment |
-
2018
- 2018-12-26 CN CN201811601654.4A patent/CN109506545B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053015A (en) * | 2009-10-30 | 2011-05-11 | 中国石油化工股份有限公司 | Tester for thrust bearing |
| CN205049091U (en) * | 2015-10-26 | 2016-02-24 | 人本集团有限公司 | Wheel hub bearing negative clearance detection device |
| CN209416194U (en) * | 2018-12-26 | 2019-09-20 | 中国航发中传机械有限公司 | Adjustable applied load device for bearing differential measurement |
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| Publication number | Publication date |
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| CN109506545A (en) | 2019-03-22 |
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