CN109238208B - Auxiliary device and method for detecting bearing negative clearance - Google Patents
Auxiliary device and method for detecting bearing negative clearance Download PDFInfo
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- CN109238208B CN109238208B CN201811427579.4A CN201811427579A CN109238208B CN 109238208 B CN109238208 B CN 109238208B CN 201811427579 A CN201811427579 A CN 201811427579A CN 109238208 B CN109238208 B CN 109238208B
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- bearing
- connecting ring
- gasket
- detecting
- gaskets
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolling Contact Bearings (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
An auxiliary device and a detection method for detecting the negative clearance of a bearing are used for conveniently and rapidly measuring the negative clearance of the bearing, and the measurement accuracy is higher. It includes several gaskets with equal thickness uniformly distributed on the same circumference. The method for detecting the negative clearance of the bearing is characterized by comprising the following steps of: a plurality of gaskets which are uniformly arranged along the circumferential direction are arranged between the two bearing outer rings or the two bearing inner rings, and the gaskets are ensured to be in close contact with the end surfaces of the bearing inner rings or the end surfaces of the bearing outer rings; the two bearing outer rings or the two bearing inner rings are fixedly connected together through bolts; measuring a bearing clearance value G1 after the gasket is added; the actual negative play value of the bearing is g=g1-shim thickness. The auxiliary device and the detection method for detecting the negative clearance of the bearing are convenient and simple to operate on one hand and can accurately realize measurement on the other hand.
Description
Technical Field
The invention relates to the technical field of bearing negative clearance measurement, in particular to an auxiliary device for bearing negative clearance detection and a detection method.
Background
When the bearing is negative clearance, the clearance value cannot be directly measured, and two methods for measuring the negative clearance are most common at present: one is the method for measuring the negative clearance of yaw or pitch bearings of wind driven generators, with an authorized bulletin number of CN 101684996B; the other is a method for determining the negative clearance of a turntable bearing, which is disclosed in application publication No. CN 103759613A. Under the detection mode, the measurement efficiency is low, and the measurement accuracy is poor.
Disclosure of Invention
The invention aims to provide an auxiliary device and a detection method for detecting negative clearance of a bearing, which are used for conveniently and rapidly measuring the negative clearance of the bearing and have higher measurement precision.
The technical scheme adopted for solving the technical problems is as follows: an auxiliary device for detecting the negative clearance of a bearing is characterized by comprising a plurality of gaskets with equal thickness which are uniformly distributed on the same circumference.
Further, a connecting rope is arranged between every two adjacent gaskets.
Further, the connecting rope is one of a nylon rope, a fish wire or a steel wire.
Further, the connecting rope is a circular arc steel wire.
Further, the device also comprises an annular connecting ring, and each gasket is uniformly arranged on the connecting ring along the circumferential direction.
Further, a circular arc-shaped slideway is arranged on the gasket, the slideway penetrates through the left end face and the right end face of the gasket, the connecting ring is connected with the slideway in a sliding manner, and the connecting ring and the gasket relatively move along the axial direction of the connecting ring; a ring is arranged on the connecting ring between every two adjacent gaskets.
Further, the gasket is arranged on the inner side or the outer side of the connecting ring, and a connecting rod is arranged between the gasket and the inner wall of the connecting ring or between the gasket and the outer wall of the connecting ring.
Further, the connecting rod is a rubber piece.
Further, a cylinder is arranged on the inner side of the connecting ring, a rotating shaft is rotatably arranged in the inner cavity of the cylinder, a rotating wheel is fixed on the rotating shaft, an elastic actuating rod is arranged between the rotating wheel and the gasket, a torsion spring is arranged between the rotating shaft and the cylinder, and the gasket penetrates through a through hole on the side wall of the connecting ring to extend out of the connecting ring under the action of the torsion spring; the upper part of the rotating shaft is hinged with a locking rod arranged above the cylinder, the top of the cylinder is provided with a concave locking block, and when the rotating shaft is rotated and the locking rod is arranged at the inner side of the locking block, the actuating rod pulls the gasket to be arranged between the connecting ring and the cylinder.
The method for detecting the negative clearance of the bearing is characterized by comprising the following steps of:
(1) A plurality of gaskets which are uniformly arranged along the circumferential direction are arranged between the two bearing outer rings or the two bearing inner rings, and the gaskets are ensured to be in close contact with the end surfaces of the bearing inner rings or the end surfaces of the bearing outer rings;
(2) The two bearing outer rings or the two bearing inner rings are fixedly connected together through bolts;
(3) Measuring a bearing clearance value G1 after the gasket is added;
(4) The actual negative play value of the bearing is g=g1-shim thickness.
The beneficial effects of the invention are as follows: according to the auxiliary device and the detection method for detecting the negative clearance of the bearing, when the negative clearance of the bearing is measured, on one hand, the negative clearance is converted into the positive clearance in a form of placing a gasket, and the measurement of the positive clearance can be performed by a method in the prior art; the positive lash measure is taken into the shim thickness, which is the negative lash measure. On the other hand, when placing the gasket, because interconnect just can evenly place the gasket between two bearing inner race or bearing outer lane through simple adjustment between the gasket, convenient operation is simple.
Drawings
FIG. 1 is a front view of a first embodiment of the present invention;
FIG. 2 is a top view of a first embodiment of the present invention;
FIG. 3 is a schematic view of another shape of a gasket according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the use of the first embodiment of the present invention;
FIG. 5 is a second schematic diagram of the first embodiment of the present invention;
FIG. 6 is a schematic diagram of a second embodiment of the present invention;
FIG. 7 is a schematic illustration of a second embodiment of the present invention with a different number of shims;
FIG. 8 is a schematic diagram of a third embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of the present invention for measuring bearing outer race play;
FIG. 10 is a schematic diagram of a fourth embodiment of the present invention;
FIG. 11 is one of the schematic diagrams of a fifth pair of bearing inner rings for play measurement using the embodiment of the present invention;
FIG. 12 is a second schematic illustration of a fifth embodiment of the present invention used for lash measurement of a bearing inner race;
FIG. 13 is a schematic diagram of a fifth embodiment of the present invention;
FIG. 14 is a schematic diagram of a sixth embodiment of the invention;
FIG. 15 is a schematic view of a sixth embodiment of the invention with the gasket retracted;
FIG. 16 is a diagram illustrating a connection between a wheel and an actuator lever according to a sixth embodiment of the present invention;
in the figure: the device comprises a gasket 1, a slideway 11, a bearing outer ring 2, a groove 21, a bolt 3, a nut 31, a connecting rope 4, a connecting ring 5, a circular ring 51, a connecting rod 52, a through hole 53, a supporting rod 54, a bearing inner ring 6, a cylinder 7, a lug plate 71, a locking rod 72, a locking block 73, a rotating wheel 74, a rotating shaft 75, an actuating rod 76 and a avoiding hole 77.
Detailed Description
The auxiliary device for detection of the invention mainly comprises a gasket 1, as shown in fig. 1 to 3, the gasket 1 can be in a fan shape or a rectangle shape, the thickness of the gasket is 0.03mm-0.05mm, and the gasket is a sheet metal piece. The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 4 and 5, as a first embodiment of the present invention, the auxiliary device for detecting a negative backlash in a bearing includes four shims 1 uniformly arranged in the circumferential direction, and the thicknesses of the four shims are equal. In use, four gaskets are placed between two bearing outer rings 2, the gaskets are contacted with the end surfaces of the bearing outer rings, and the gaskets are positioned in the areas where the outer surfaces of the bearing outer rings and the inner surfaces of the bearing outer rings are positioned. Then a bolt 3 is arranged between the two bearing outer rings, and a nut 31 is arranged in the groove 21 on one of the bearing outer rings, the nut being used for connection with the bolt to tightly fix the two bearing outer rings together. In order to facilitate the installation of the bolts, threaded holes are formed in the outer ring of the bearing, and the threaded holes are coaxial with the grooves. Of course, the spacers may be of other numbers, such as three, five, six, etc. The bearing play after the gasket is placed can be detected by a conventional detection method. By placing the shim, the bearing play value, which is originally a negative play, becomes a positive value. After the play value becomes positive, it can be detected by normal play measurement method. Subtracting the thickness of the gasket from the detection value to obtain a value which is the negative clearance value of the bearing. After the detection is finished, the gasket is removed, and the outer ring of the double half bearing is connected, so that the bearing is restored to a negative clearance state. Under the above detection mode, the main factors affecting the detection accuracy are: (1) whether the gaskets are uniformly distributed along the same circumference; (2) Whether the thickness of each gasket is consistent or not, and the thickness difference between any two gaskets should not exceed 0.005mm; (3) The thickness of the gasket is 0.01-0.03 mm larger than the absolute value of the negative clearance value; (4) The roughness of the joint end surface of the gasket and the bearing outer ring is less than or equal to 1 mu m. Therefore, in addition to ensuring the machining precision of the gaskets, the gaskets are uniformly distributed along the circumferential direction.
As shown in fig. 6 and 7, as a second embodiment of the present invention, in order to ensure that a plurality of gaskets are uniformly arranged along the circumferential direction and conveniently achieve the purpose, a plurality of gaskets are fixedly connected together through a connecting rope 4, a plurality of gaskets are positioned on the same circumference, and the connecting rope is positioned between every two adjacent gaskets. The connecting rope can be a flexible nylon rope or a flexible fish wire, and the thickness of the connecting rope is smaller than that of the gaskets, so that the gaskets can be conveniently adjusted to ensure that the gaskets are positioned on the same circumference; in operation, each spacer is moved outwardly and the connecting ropes are straightened and the tension on the connecting ropes is substantially equivalent. As shown in FIG. 7, the connecting rope can also be a steel wire, and the connecting rope should be circular arc-shaped, so that not only are the gaskets uniformly distributed on the same circumference, but also the connecting rope can avoid bolts.
As shown in fig. 8, in order to ensure that a plurality of gaskets are uniformly arranged along the circumferential direction, the gaskets are connected in series through a connecting ring 5, at this time, the connecting ring is in a ring shape, a slide way is arranged on the gasket, the slide way penetrates through the left end face and the right end face of the gasket, the front surface of the slide way is contacted with the inner wall of the connecting ring, and the rear surface of the slide way is contacted with the outer wall of the connecting ring. Therefore, the gasket and the connecting ring can not move relatively along the radial direction, the thickness of the gasket is larger than the axial dimension of the connecting ring, the thickness of the slideway is also larger than the axial dimension of the connecting ring, and the gasket can be ensured to be in close contact with the end surfaces of the outer rings of the bearings after being placed between the outer rings of the two bearings. The connecting ring is provided with a plurality of gaskets, and the connecting ring and the gaskets can only move relatively along the axial direction, so that the gaskets can be uniformly distributed on the connecting ring along the circumferential direction through preassembly. The connecting ring is also provided with evenly distributed circular rings 51, and the circular rings can avoid bolts; at this time, the screw rod of the bolt penetrates through the inner hole of the circular ring to connect the two bearing outer rings together. The connecting ring and the circular ring can be integrally manufactured and formed, or can be manufactured separately and then fixedly connected together. In use, the connecting ring is placed between the two bearing outer rings 2 and kept as concentric as possible with the bearing outer rings, as shown in fig. 9, and then the two bearing outer rings are fixedly connected together by bolts, at which time play measurement can be performed. When the connecting ring and the bearing outer ring are ensured to be concentric as much as possible, the circular ring can be kept consistent with the threaded hole on the bearing outer ring.
As shown in fig. 10, in order to ensure that the gaskets are uniformly distributed on the same circumference, a connecting ring 5 is arranged on the outer side of the circumference where the plurality of gaskets are located, a connecting rod 52 is arranged between the inner side of the connecting ring and the gaskets, the connecting rod can be a metal rod or a rubber rod, and when the connecting rod is made of rubber, the gaskets and the connecting rod can move relatively, so that the close fit between the gaskets and the end face of the outer ring of the bearing can be ensured.
As shown in fig. 11, 12 and 13, the fifth embodiment of the present invention is different from the fourth embodiment in that the connection ring is located inside the spacer. When the bearing clearance is measured, the connecting ring is firstly arranged on the inner side of one of the bearing inner rings, and then the two bearing inner rings 6 are connected together; at this time, the connecting ring can be suspended, and the lower surface of the connecting ring can be flush with the lower end surface of the inner ring of the lower bearing.
In order to ensure that the gaskets are uniformly distributed on the same circumference, as shown in fig. 14 to 16, a cylinder 7 is arranged on the inner side of the connecting ring, and the outer wall of the cylinder is fixedly connected with the inner wall of the connecting ring through a supporting rod 54. The cylinder and the connecting ring are coaxially arranged, a rotating shaft 75 is rotatably arranged on the inner side 75 of the cylinder, a rotating wheel 74 is fixed on the rotating shaft, an actuating rod 76 is arranged between the rotating wheel and the gasket, and the actuating rod is an elastic piece and can be bent and can be restored after external force is removed. The upper end of the rotating shaft extends out of the cylinder, a pair of lug plates 71 are fixed on the upper part of the rotating shaft, a locking rod 72 is hinged between the lug plates, a locking block 73 is arranged at the top of the cylinder, the locking block is of a concave structure, and when the locking rod is arranged in the locking block, the rotating shaft and the cylinder are relatively fixed. A through hole 53 is arranged on the side wall of the connecting ring, a torsion spring is arranged between the rotating shaft and the cylinder, and the gasket passes through the through hole to be arranged outside the connecting ring under the action of the torsion spring. The rotating shaft is rotated, and under the action of the actuating rod, as shown in fig. 15, the gasket passes through the through hole and enters between the connecting ring and the cylinder, so that the gasket is protected. For avoiding the actuating rod, an avoiding hole 77 is formed in the side wall of the cylinder.
When the invention is used for measuring the negative clearance of the bearing, on one hand, the negative clearance is converted into the positive clearance by placing a gasket, and the measurement of the positive clearance can be carried out by a method in the prior art; the positive lash measure is taken into the shim thickness, which is the negative lash measure. On the other hand, when placing the gasket, because interconnect just can evenly place the gasket between two bearing inner race or bearing outer lane through simple adjustment between the gasket, convenient operation is simple.
The following describes the method of use of the invention:
(1) A plurality of gaskets which are uniformly arranged along the circumferential direction are arranged between the two bearing outer rings or the two bearing inner rings, and the gaskets are ensured to be in close contact with the end surfaces of the bearing inner rings or the end surfaces of the bearing outer rings;
(2) The two bearing outer rings or the two bearing inner rings are fixedly connected together through bolts;
(3) Measuring a bearing clearance value G1 after the gasket is added;
(4) The actual negative play value of the bearing is g=g1-shim thickness.
Claims (7)
1. The auxiliary device for detecting the negative clearance of the bearing is characterized by comprising a plurality of gaskets with equal thickness, which are uniformly distributed on the same circumference, and an annular connecting ring, wherein each gasket is uniformly arranged on the connecting ring along the circumferential direction;
the gasket is provided with a circular arc-shaped slideway, the slideway penetrates through the left end face and the right end face of the gasket, the connecting ring is connected with the slideway in a sliding manner, and the connecting ring and the gasket move relatively along the axial direction of the connecting ring; a ring is arranged on the connecting ring between every two adjacent gaskets; or (b)
The inner side of the connecting ring is provided with a cylinder, a rotating shaft is rotatably arranged in the inner cavity of the cylinder, a rotating wheel is fixed on the rotating shaft, an elastic actuating rod is arranged between the rotating wheel and the gasket, a torsion spring is arranged between the rotating shaft and the cylinder, and the gasket penetrates through a through hole on the side wall of the connecting ring to extend out of the connecting ring under the action of the torsion spring; the upper part of the rotating shaft is hinged with a locking rod arranged above the cylinder, the top of the cylinder is provided with a concave locking block, and when the rotating shaft is rotated and the locking rod is arranged at the inner side of the locking block, the actuating rod pulls the gasket to be arranged between the connecting ring and the cylinder.
2. An auxiliary device for detecting a negative play of a bearing according to claim 1, wherein a connecting rope is provided between each adjacent two of the spacers.
3. The auxiliary device for detecting negative play of bearing according to claim 2, wherein the connecting rope is one of a nylon rope, a fish wire, or a steel wire.
4. An auxiliary device for detecting a negative play of a bearing according to claim 3, wherein the connecting rope is a circular arc-shaped steel wire.
5. The auxiliary device for detecting negative play of bearing according to claim 1, wherein the spacer is provided on the inner side or the outer side of the connecting ring, and a connecting rod is provided between the spacer and the inner wall of the connecting ring or between the spacer and the outer wall of the connecting ring.
6. The auxiliary device for detecting negative play of bearing according to claim 5, wherein the connecting rod is a rubber member.
7. A method for detecting a bearing play using an auxiliary device for detecting a bearing negative play according to any one of claims 1 to 6, comprising the steps of:
(1) A plurality of gaskets which are uniformly arranged along the circumferential direction are arranged between the two bearing outer rings or the two bearing inner rings, and the gaskets are ensured to be in close contact with the end surfaces of the bearing inner rings or the end surfaces of the bearing outer rings;
(2) The two bearing outer rings or the two bearing inner rings are fixedly connected together through bolts;
(3) Measuring a bearing clearance value G1 after the gasket is added;
(4) The actual negative play value of the bearing is g=g1-shim thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427579.4A CN109238208B (en) | 2018-11-27 | 2018-11-27 | Auxiliary device and method for detecting bearing negative clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427579.4A CN109238208B (en) | 2018-11-27 | 2018-11-27 | Auxiliary device and method for detecting bearing negative clearance |
Publications (2)
| Publication Number | Publication Date |
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| CN109238208A CN109238208A (en) | 2019-01-18 |
| CN109238208B true CN109238208B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811427579.4A Active CN109238208B (en) | 2018-11-27 | 2018-11-27 | Auxiliary device and method for detecting bearing negative clearance |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217648A (en) * | 1994-02-04 | 1995-08-15 | Nippon Seiko Kk | Method of measuring pre-load clearance of double row rolling bearing and device therefor |
| DE19504401C1 (en) * | 1995-01-19 | 1996-02-15 | Fooke Gmbh | Method of adjusting bearing clearance for antifriction bearings |
| JP2009063516A (en) * | 2007-09-07 | 2009-03-26 | Nsk Ltd | Bearing-measuring method and instrument |
| CN106500643A (en) * | 2016-09-28 | 2017-03-15 | 重庆长江轴承股份有限公司 | The negative clearance wheel measuring method of third generation hub-bearing unit |
| CN106871846A (en) * | 2016-12-30 | 2017-06-20 | 韶关学院 | The online direct measuring method of negative clearance when a kind of hub-bearing unit riveted is assembled |
| CN209116994U (en) * | 2018-11-27 | 2019-07-16 | 山东洛轴所轴承研究院有限公司 | Auxiliary device is used in a kind of detection of bearing negative clearance |
-
2018
- 2018-11-27 CN CN201811427579.4A patent/CN109238208B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217648A (en) * | 1994-02-04 | 1995-08-15 | Nippon Seiko Kk | Method of measuring pre-load clearance of double row rolling bearing and device therefor |
| DE19504401C1 (en) * | 1995-01-19 | 1996-02-15 | Fooke Gmbh | Method of adjusting bearing clearance for antifriction bearings |
| JP2009063516A (en) * | 2007-09-07 | 2009-03-26 | Nsk Ltd | Bearing-measuring method and instrument |
| CN106500643A (en) * | 2016-09-28 | 2017-03-15 | 重庆长江轴承股份有限公司 | The negative clearance wheel measuring method of third generation hub-bearing unit |
| CN106871846A (en) * | 2016-12-30 | 2017-06-20 | 韶关学院 | The online direct measuring method of negative clearance when a kind of hub-bearing unit riveted is assembled |
| CN209116994U (en) * | 2018-11-27 | 2019-07-16 | 山东洛轴所轴承研究院有限公司 | Auxiliary device is used in a kind of detection of bearing negative clearance |
Non-Patent Citations (1)
| Title |
|---|
| 双内圈双列角接触球轴承轴向游隙的精确控制;孙怀全;刘红莉;赵立新;张长之;;轴承(第01期);第46-47页 * |
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| CN109238208A (en) | 2019-01-18 |
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