CN211651468U - Adjusting type dummy shaft for bearing bush measurement - Google Patents
Adjusting type dummy shaft for bearing bush measurement Download PDFInfo
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- CN211651468U CN211651468U CN201922244855.XU CN201922244855U CN211651468U CN 211651468 U CN211651468 U CN 211651468U CN 201922244855 U CN201922244855 U CN 201922244855U CN 211651468 U CN211651468 U CN 211651468U
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- 238000005259 measurement Methods 0.000 title claims description 17
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a regulation formula false shaft for axle bush is measured, including the axis body, the axis body includes public axle and the axle sleeve of being amalgamated by a plurality of axle pieces, and including public axle and axle sleeve set to public axle, the coaxial structure of axle sleeve outside jointly, and the outer wall of public axle is the coniform setting, and axle sleeve inner wall links to each other with public off-axial wall cooperation, and the axle sleeve outer wall is the face of cylinder setting, and the little one end in public off-axial is equipped with the screw rod, and the screw rod is equipped with adjusting nut. The utility model has the characteristics of simple process, specification are few, with low costs, later maintenance is simple, can wide application in centrifuge overhauls the field.
Description
Technical Field
The utility model relates to a centrifuge overhauls the field, especially relates to a regulation formula dummy shaft for axle bush is measured.
Background
The gap measurement of the bearing bush in the overhaul process of the centrifuge is a key step, along with the development of the technology, the bearing bush used by the novel unit is mostly a tilting bush, the most common method for measuring at present is a false shaft method, and the accuracy of the current measuring method is not high.
There are problems:
1. in the dummy shaft method measurement, a dummy shaft needs to be machined again, the existing centrifugal unit has more, the diameter specification of the shaft is more, and the specification of the dummy shaft needing to be prepared is more;
2. the processing cost of the dummy shaft is higher, and the later storage and maintenance are troublesome.
3. The stepped shaft dummy shaft is used, the problems of complex processing technology, low measurement accuracy and small measurement range exist, if the accuracy needs to be improved, the number of steps in one interval is large, and the length of the dummy shaft to be processed is long.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned background art, provide a regulation formula dummy shaft for axle bush measurement, make it have simple process, the specification is few, with low costs, the simple characteristics of later stage maintenance.
The utility model provides a pair of adjust formula false axle for axle bush measurement, including the axis body, the axis body includes public axle and the axle sleeve of being pieced together by a plurality of axle pieces, public axle and axle sleeve set up to the coaxial configuration including the public axle, the axle sleeve is outside jointly, the outer wall of public axle is the circular conical surface setting, axle sleeve inner wall and public axle outer wall cooperation are linked together, the axle sleeve outer wall is the face of cylinder setting, the little one end in public axle axial cross-section is equipped with the screw rod, be equipped with adjusting nut on the screw rod; the diameter of one end of the male shaft with a small axial section is T, the diameter of the other end of the male shaft with a large axial section is D, when the shaft sleeve is formed by tightly splicing the shaft blocks, the inner diameter of one end of the shaft sleeve with a large inner diameter is D, and D is more than D and more than T; the outer diameter of the adjusting nut is H, the inner diameter of the end, with the smaller inner diameter, of the shaft sleeve is H when the shaft blocks are tightly spliced into the shaft sleeve, and H is larger than H.
In the technical scheme, the included angle alpha between the outer wall of the male shaft and the axis is less than or equal to 1 degree.
In the technical scheme, the end with the large axial section of the male shaft is provided with the polygonal grip.
In the technical scheme, the shaft sleeve is composed of four shaft blocks with the same size and shape.
The utility model is used for during the axle bush is measured, have following step: step one, a plurality of shaft blocks surround a male shaft and are spliced into a coaxially arranged male shaft and a shaft sleeve, and an adjusting nut is in threaded connection with a screw rod; inserting a dummy shaft formed by the shaft block, the male shaft, the screw rod and the adjusting nut into a bearing bush ring formed by the bearing bush; and thirdly, rotating the adjusting nut to one side of the male shaft to enable the shaft block and the male shaft to generate relative displacement, continuously increasing the outer diameter of the shaft sleeve until the outer wall of the shaft sleeve abuts against the inner wall of the bearing bush ring, and measuring the outer diameter of the shaft sleeve at the moment to obtain the inner diameter of the bearing bush ring.
In the above technical solution, before the first step, the inner diameters a of the bearing rings with a size within a certain range are used as a measurement interval, and a dummy shaft conforming to a specification is manufactured, where the specification needs to consider a radial size and an axial size of the dummy shaft and an included angle α between an outer wall of the male shaft and an axis, and the specification of the dummy shaft conforms to the following relationship: h +2L · tg alpha +2B is not less than A and not more than D +2B, wherein A is the inner diameter of the bearing bush ring, D is the diameter of one end with a large axial section of the male shaft, B is the radial size of one end with a small radial size of the shaft block, h is the inner diameter size of one end with a small inner diameter of the shaft sleeve when the shaft blocks are tightly spliced into the shaft sleeve, L is the axial length of the shaft block, and alpha is the included angle between the outer wall of the male shaft and the axis.
In the above technical solution, the difference between the maximum inner diameter and the minimum inner diameter of the bearing ring in the measurement interval is 5 mm.
In the technical scheme, the included angle alpha between the outer wall of the male shaft and the axis is less than or equal to 1 degree.
In the technical scheme, the end with the large axial section of the male shaft is provided with the polygonal grip.
In the technical scheme, the shaft sleeve is composed of four shaft blocks with the same size and shape.
The utility model relates to a be used for axle bush measuring regulation formula dummy shaft has following beneficial effect: because the matching surface of the male shaft and the shaft block is a conical surface, the shaft block can slide relative to the male shaft under the pushing of the adjusting nut and the screw rod, and the increase and decrease of the outer diameter of the shaft sleeve are realized in the sliding process, so that the purpose of adjusting the outer diameter is achieved, the shaft diameter adjusting performance is realized, and the bearing bush clearance can be accurately measured.
Drawings
Fig. 1 is a schematic structural view of an adjustable dummy shaft for bearing bush measurement according to the present invention;
FIG. 2 is a schematic diagram showing the dimensional relationship among the parts of the adjustable dummy shaft for bearing bush measurement according to the present invention;
fig. 3 is a schematic view of the flow chart of the utility model used for during axle bush measurement.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the examples should not be construed as limiting the present invention.
Referring to fig. 1 to 2, the utility model discloses an adjustable false shaft for axle bush measurement, including the axis body, the axis body includes public axle 1 and the axle sleeve 2 of being pieced together by a plurality of axle pieces 2.1, public axle 1 sets up to public axle 1 with axle sleeve 2 together and is interior, axle sleeve 2 is outer coaxial structure, the outer wall of public axle 1 is the circular conical surface setting, axle sleeve 2 inner wall and public axle 1 outer wall cooperation link to each other, axle sleeve 2 outer wall is the face of cylinder setting, the one end that public axle 1 axial cross-section is little is equipped with screw rod 3, be equipped with adjusting nut 4 on the screw rod 3; the diameter of the small end of the axial section of the male shaft 1 is T, the diameter of the large end of the axial section of the male shaft 1 is D, when the shaft sleeve 2 is formed by tightly splicing the shaft blocks 2.1, the inner diameter of the large end of the shaft sleeve 2 is D, and D is larger than D and larger than T; the outer diameter of the adjusting nut 4 is H, the inner diameter of the end, with the smaller inner diameter, of the shaft sleeve 2 is H when the shaft blocks 2.1 are tightly spliced into the shaft sleeve 2, and H is larger than H.
The included angle alpha between the outer wall of the male shaft 1 and the axis is less than or equal to 1 degree.
The end of the male shaft 1 with a large axial section is provided with a polygonal grip 5.
The shaft sleeve 2 is composed of four shaft blocks 2.1 with the same size and shape.
Referring to fig. 2, the utility model is used for during the axle bush is measured, have following step:
step one, taking the inner diameter A of a plurality of bearing rings with the size within a certain range as a measuring interval, manufacturing a dummy shaft which meets the specification, wherein the specification needs to consider the radial size and the axial size of the dummy shaft and the included angle alpha between the outer wall of the male shaft 1 and the axis,
the specification of the dummy shaft conforms to the following relationship:
h+2L·tgα+2B≤A≤D+2B，
wherein,
a, the inner diameter of a bearing bush ring, D, the diameter of one end with a large axial section of a male shaft 1, B, the radial size of one end with a small radial size of a shaft block 2.1, h, the inner diameter size of one end with a small inner diameter of the shaft sleeve 2 when the shaft blocks 2.1 are tightly spliced into the shaft sleeve 2, L, the axial length of the shaft block 2.1 and an included angle between the outer wall of the male shaft 1 and an axis;
secondly, splicing a plurality of shaft blocks 2.1 surrounding the male shaft 1 into a male shaft 1 and a shaft sleeve 2 which are coaxially arranged, and connecting an adjusting nut 4 with a screw rod 3 in a threaded manner;
inserting a dummy shaft formed by the shaft block 2.1, the male shaft 1, the screw rod 3 and the adjusting nut 4 into a bearing bush ring formed by a bearing bush 6;
step four, rotating the adjusting nut 4 to one side of the male shaft 1 to enable the shaft block 2.1 and the male shaft 1 to generate relative displacement, increasing the outer diameter of the shaft sleeve 2 continuously until the outer wall of the shaft sleeve 2 abuts against the inner wall of the bearing bush ring, and measuring the outer diameter of the shaft sleeve 2 at the moment to obtain the inner diameter of the bearing bush ring.
The difference value between the maximum inner diameter and the minimum inner diameter of the bearing ring in one measuring interval is 5 mm.
Referring to fig. 1 to 2, because the matching surface between the male shaft 1 and the shaft block 2.1 is a conical surface, under the pushing of the adjusting nut 4 and the screw rod 3, the shaft block 2.1 can slide relative to the male shaft 1, and in the process of moving from the position X to the position Y in fig. 1 or 2, the increase and decrease of the outer diameter of the shaft sleeve 2 are realized during the sliding, so that the purpose of adjusting the outer diameter is achieved, the shaft diameter adjusting performance is realized, and the bearing bush gap can be accurately measured.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Those not described in detail in this specification are within the skill of the art.
Claims (4)
1. The utility model provides a adjust formula dummy shaft for axle bush is measured, includes the axis body, its characterized in that: the shaft body comprises a male shaft (1) and a shaft sleeve (2) formed by splicing a plurality of shaft blocks (2.1), the male shaft (1) and the shaft sleeve (2) are jointly arranged into a coaxial structure with the male shaft (1) inside and the shaft sleeve (2) outside, the outer wall of the male shaft (1) is arranged in a conical surface manner, the inner wall of the shaft sleeve (2) is matched and connected with the outer wall of the male shaft (1), the outer wall of the shaft sleeve (2) is arranged in a cylindrical surface manner, a screw rod (3) is arranged at one end of the male shaft (1) with a small axial section, and an adjusting nut (4) is arranged on the screw rod (3); the diameter of one end of the male shaft (1) with a small axial section is T, the diameter of the other end of the male shaft (1) with a large axial section is D, when the shaft blocks (2.1) are tightly spliced into the shaft sleeve (2), the inner diameter of one end of the shaft sleeve (2) with a large inner diameter is D, and D is larger than D and larger than T; the outer diameter of the adjusting nut (4) is H, the inner diameter of the end, with the smaller inner diameter, of the shaft sleeve (2) is H when the shaft sleeves (2) are formed by tightly splicing the shaft blocks (2.1), and H is larger than H.
2. The adjustable dummy axle for bearing shell measurements as claimed in claim 1, wherein: the included angle alpha between the outer wall of the male shaft (1) and the axis is less than or equal to 1 degree.
3. A regulating dummy shaft for bearing shell measurements according to claim 1 or 2, wherein: the end of the male shaft (1) with a large axial section is provided with a polygonal grip (5).
4. A tuned dummy shaft for bearing shell measurements according to claim 3, wherein: the shaft sleeve (2) is composed of four shaft blocks (2.1) with the same size and shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244855.XU CN211651468U (en) | 2019-12-13 | 2019-12-13 | Adjusting type dummy shaft for bearing bush measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244855.XU CN211651468U (en) | 2019-12-13 | 2019-12-13 | Adjusting type dummy shaft for bearing bush measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211651468U true CN211651468U (en) | 2020-10-09 |
Family
ID=72696218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922244855.XU Active CN211651468U (en) | 2019-12-13 | 2019-12-13 | Adjusting type dummy shaft for bearing bush measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211651468U (en) |
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2019
- 2019-12-13 CN CN201922244855.XU patent/CN211651468U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An adjustable dummy shaft for bearing bush measurement Effective date of registration: 20220124 Granted publication date: 20201009 Pledgee: Qingshan Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN JIAN'AN PETROCHEMICAL ENGINEERING Co.,Ltd. Registration number: Y2022420000028 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201009 Pledgee: Qingshan Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN JIAN'AN PETROCHEMICAL ENGINEERING Co.,Ltd. Registration number: Y2022420000028 |