CN111425585A - Circular spigot flange fixing structure - Google Patents
Circular spigot flange fixing structure Download PDFInfo
- Publication number
- CN111425585A CN111425585A CN202010263217.7A CN202010263217A CN111425585A CN 111425585 A CN111425585 A CN 111425585A CN 202010263217 A CN202010263217 A CN 202010263217A CN 111425585 A CN111425585 A CN 111425585A
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- flange
- positioning
- fixing structure
- gaps
- circular
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000035515 penetration Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010009 beating Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/50—Flanged connections
- F16B2200/503—Flanged connections the flange being separate from the elements to be connected
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/50—Flanged connections
- F16B2200/506—Flanged connections bolted or riveted
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention belongs to the technical field of accurate positioning, and particularly relates to a circular spigot flange fixing structure. Circular tang flange fixed knot constructs includes: the positioning mechanism is arranged between the flange and the base body; compared with the prior art, the eccentric sleeve is an adjustable structure, can realize gapless positioning and is reliable in positioning. Only need precision finishing bolt, eccentric cover, the fast cooperation diameter of location, the size of breach and the position size of corresponding screw hole do not all have too high accuracy requirement, are convenient for reduce the processing cost. Complex combined machining such as beating is not needed, repeated disassembly and adjustment can be achieved, and manufacturability is good. The friction force and the positioning speed of the flange connecting surface jointly bear the torque of the transmission mechanism, the overload capacity is strong, the reliability is high, and the reduction of the volume of the connecting part is facilitated. The structure of the invention can adapt to the installation form of the eccentric circular spigot flange.
Description
Technical Field
The invention belongs to the technical field of accurate positioning, and particularly relates to a circular spigot flange fixing structure.
Background
The circular spigot flange is convenient to process, high in concentric precision and widely applied to connection of a mechanical transmission mechanism shell. In a conventional transmission, a flange fixing hole 11 is provided through which a flange 12 and a base 14 are fastened by bolts. Because a certain clearance is reserved between the bolt hole and the bolt, and the circular seam allowance has no circumferential positioning function, the torque reaction moment of the transmission mechanism is only born by the friction force of the connecting surface. In some situations with high impact load and high reliability, it is often necessary to add several high precision match pins 13 to help withstand the torque, as shown in fig. 1. In the structure, the pin hole of the matched positioning pin 13 needs to be manufactured by drilling and hinging the flange 12 and the base 14, so that the manufacturability is poor, the disassembly and the assembly are inconvenient, and once the pin hole is manufactured, the adjustment is difficult. Another disadvantage of this configuration is that the flange outer diameter must be left empty of the pin hole, often making the flange diameter non-compact.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem of how to provide a circular seam allowance flange fixing structure which is good in manufacturability, convenient to assemble and disassemble and reliable in positioning.
(II) technical scheme
In order to solve the problems of the prior art, the invention provides a circular spigot flange fixing structure, which comprises: the flange 2, the base body 7 and the positioning mechanism arranged between the flange 2 and the base body 7; wherein the content of the first and second substances,
the flange 2 is a circular spigot flange, a plurality of pairs of gaps which are not uniformly distributed are arranged on the outer side of the flange, and each pair of gaps are arranged in a way that the connecting line of the gap and the gap passes through the circle center of the flange 2;
the base body 7 is provided with connecting threaded holes which are uniformly distributed on the circumference, and the number of the connecting threaded holes is several times of the number of the notches on the flange 2;
the positioning mechanism includes: the bolt 5, the eccentric sleeve 4 and the positioning block 3;
because a plurality of pairs of gaps are not uniformly distributed on the outer side of the flange 2 of the circular seam allowance, and correspondingly, the number of the connecting threaded holes uniformly distributed on the base body 7 is a plurality of times of the number of the gaps, so that no matter how the assembly is carried out, a plurality of pairs of gaps can be opposite to the threaded holes;
during assembly, the positioning mechanism is arranged in a certain gap, the eccentric cylindrical sleeve 4 and the positioning block 3 are sleeved on the central cylinder 5, the eccentric position of the eccentric cylindrical sleeve 4 is adjusted, so that the positioning block 3 just can prop against one side of the gap, the positioning mechanism is also arranged in the other gap paired with the gap, and the positioning blocks 3 in the pair of gaps prop against the side surfaces of the gaps in different directions respectively, so that the positioning mechanism can be accurately positioned in the circumferential direction and bear partial torque; meanwhile, other flange fixing holes 1 are fixed by bolts for fixing through penetration; the eccentric cylindrical sleeve 4 is pressed on the base body 7 through the central cylinder 5, so that the eccentric torque is prevented from rotating.
The positioning blocks 3 in the pair of notches respectively prop against the side faces of the notches in different directions, namely, the positioning blocks 3 in one notch prop against one side of the notch in the clockwise direction, and the positioning blocks 3 in the other notch prop against one side of the notch in the counterclockwise direction.
Wherein the central cylinder 5 is a pin.
Wherein, the central cylinder 5 is a bolt.
Wherein, the central cylinder 5 is a stud.
The positioning block 3 is in single-surface and surface contact with the flange 2, and the contact surface can be well contacted through adjustment of the eccentric cylindrical sleeve 4.
Wherein, the contact surface between the positioning block 3 and the flange 2 is a plane.
Wherein, the contact surface between the positioning block 3 and the flange 2 is a curved surface.
Wherein, only one contact surface is arranged between the positioning block 3 and the flange 2.
Wherein, the non-contact surface between the positioning block 3 and the flange 2 can be filled with an adjusting pad.
(III) advantageous effects
Compared with the prior art, the eccentric sleeve is an adjustable structure, can realize gapless positioning and is reliable in positioning. Only need precision finishing bolt, eccentric cover, the fast cooperation diameter of location, the size of breach and the position size of corresponding screw hole do not all have too high accuracy requirement, are convenient for reduce the processing cost. Complex combined machining such as beating is not needed, repeated disassembly and adjustment can be achieved, and manufacturability is good. The friction force and the positioning speed of the flange connecting surface jointly bear the torque of the transmission mechanism, the overload capacity is strong, the reliability is high, and the reduction of the volume of the connecting part is facilitated. The structure of the invention can adapt to the installation form of the eccentric circular spigot flange.
Drawings
Fig. 1-2 are schematic diagrams of a common flange fixing, and pin holes need to be matched with drills and hinges in the figures.
Fig. 3-5 are schematic structural views of the present invention.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
In order to solve the problems of the prior art, the present invention provides a circular spigot flange fixing structure, as shown in fig. 3 to 5, the circular spigot flange fixing structure includes: the flange 2, the base body 7 and the positioning mechanism arranged between the flange 2 and the base body 7; wherein the content of the first and second substances,
the flange 2 is a circular spigot flange, a plurality of pairs of gaps which are not uniformly distributed are arranged on the outer side of the flange, and each pair of gaps are arranged in a way that the connecting line of the gap and the gap passes through the circle center of the flange 2;
the base body 7 is provided with connecting threaded holes which are uniformly distributed on the circumference, and the number of the connecting threaded holes is several times of the number of the notches on the flange 2;
the positioning mechanism includes: the bolt 5, the eccentric sleeve 4 and the positioning block 3;
because a plurality of pairs of gaps are not uniformly distributed on the outer side of the flange 2 of the circular seam allowance, and correspondingly, the number of the connecting threaded holes uniformly distributed on the base body 7 is a plurality of times of the number of the gaps, so that no matter how the assembly is carried out, a plurality of pairs of gaps can be opposite to the threaded holes;
during assembly, the positioning mechanism is arranged in a certain gap, the high-strength central cylinder 5 is sleeved with the eccentric cylindrical sleeve 4 and the positioning block 3, the eccentric position of the eccentric cylindrical sleeve 4 is adjusted, so that the positioning block 3 just can prop against one side of the gap, the positioning mechanism is also arranged in the other gap paired with the gap, and the positioning blocks 3 in the pair of gaps prop against the side surfaces of the gaps in different directions respectively, so that the circumferential direction can be accurately positioned and bear part of torque; meanwhile, other flange fixing holes 1 are fixed by bolts for fixing through penetration; the eccentric cylindrical sleeve 4 is pressed on the base body 7 through the central cylinder 5, so that the eccentric torque is prevented from rotating.
The positioning blocks 3 in the pair of notches respectively prop against the side faces of the notches in different directions, namely, the positioning blocks 3 in one notch prop against one side of the notch in the clockwise direction, and the positioning blocks 3 in the other notch prop against one side of the notch in the counterclockwise direction.
Wherein the central cylinder 5 is a pin.
Wherein, the central cylinder 5 is a bolt.
Wherein, the central cylinder 5 is a stud.
The positioning block 3 is in single-surface and surface contact with the flange 2, and the contact surface can be well contacted through adjustment of the eccentric cylindrical sleeve 4.
Wherein, the contact surface between the positioning block 3 and the flange 2 is a plane.
Wherein, the contact surface between the positioning block 3 and the flange 2 is a curved surface.
Wherein, only one contact surface is arranged between the positioning block 3 and the flange 2.
Wherein, the non-contact surface between the positioning block 3 and the flange 2 can be filled with an adjusting pad.
Example 1
This embodiment is shown in fig. 3-5, which is an example of an output flange of a speed reducer. The bolt is of a common structure before being applied, the diameter cannot be enlarged due to the limitation of the installation volume, so that the diameter of the bolt is small, a positioning pin cannot be matched, and when the bolt is subjected to impact load, the friction force of a connecting surface is insufficient, the bolt slips repeatedly, the diameter of the bolt is impacted, and the bolt is sheared off. After the structure of the drawing 2 is changed, the requirements of zero-clearance positioning and high impact load are met under the condition that the diameter of a flange and the diameter of a fixing screw are not increased by using a high-strength bolt of M6, matching with an eccentric sleeve with the inner diameter of 6 mm, the outer diameter of 10 mm and the eccentricity of 3mm and a plurality of positioning blocks with different lengths, and the using effect is good.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A circular spigot flange fixing structure characterized by comprising: the flange (2), the base body (7) and a positioning mechanism arranged between the flange (2) and the base body (7); wherein the content of the first and second substances,
the flange (2) is a circular spigot flange, a plurality of pairs of gaps which are not uniformly distributed are arranged on the outer side of the flange, and each pair of gaps are arranged in a way that the connecting line of the two gaps passes through the circle center of the flange (2);
the base body (7) is provided with connecting threaded holes which are uniformly distributed on the circumference, and the number of the connecting threaded holes is several times of the number of the notches on the flange (2);
the positioning mechanism includes: the bolt (5), the eccentric sleeve (4) and the positioning block (3);
because a plurality of pairs of gaps are not uniformly distributed on the outer side of the flange (2) of the circular seam allowance, and correspondingly, the number of the connecting threaded holes uniformly distributed on the base body (7) is a plurality of times of the number of the gaps, no matter how the assembly is carried out, a plurality of pairs of gaps can be opposite to the threaded holes;
during assembly, the positioning mechanism is arranged in a certain gap, the eccentric cylindrical sleeve (4) and the positioning block (3) are sleeved on the central cylinder (5), the eccentric position of the eccentric cylindrical sleeve (4) is adjusted, so that the positioning block (3) just can prop against one side of the gap, the positioning mechanism is also arranged in the other gap paired with the gap, and the positioning blocks (3) in the pair of gaps prop against the side surfaces of the gaps in different directions respectively, so that the circumferential direction can be accurately positioned and bear partial torque; meanwhile, other flange fixing holes (1) are fixed by bolts for fixing through penetration; the eccentric cylindrical sleeve (4) is pressed on the base body (7) through the central cylinder (5), so that the eccentric torque is prevented from rotating.
2. The circular spigot flange fixing structure according to claim 1 wherein the positioning blocks (3) in the pair of notches abut against the notch side faces in different directions respectively, that is, the positioning blocks (3) in one notch abut against the clockwise side thereof and the positioning blocks (3) in the other notch abut against the counterclockwise side thereof.
3. The circular spigot flange fixing structure according to claim 1 wherein said central cylinder (5) is a pin.
4. The circular spigot flange fixing structure according to claim 1 wherein said central cylinder (5) is a bolt.
5. The circular spigot flange fixing structure according to claim 1 wherein said central cylinder (5) is a stud.
6. The circular spigot flange fixing structure according to claim 1, wherein the positioning block (3) is in single-sided surface contact with the flange (2), and the contact surfaces are in good contact through adjustment of the eccentric cylindrical sleeve (4).
7. The circular spigot flange fixing structure according to claim 6 wherein the contact surface between the positioning block (3) and the flange (2) is a flat surface.
8. The circular spigot flange fixing structure according to claim 6 wherein the contact surface between the positioning block (3) and the flange (2) is a curved surface.
9. The circular spigot flange fixing structure according to claim 7 or 8 wherein there is only one contact surface between the locating block (3) and the flange (2).
10. The circular spigot flange fixing structure according to claim 1 wherein the non-contact surface between the positioning block (3) and the flange (2) can be filled with a conditioning pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263217.7A CN111425585B (en) | 2020-04-07 | 2020-04-07 | Circular spigot flange fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263217.7A CN111425585B (en) | 2020-04-07 | 2020-04-07 | Circular spigot flange fixing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111425585A true CN111425585A (en) | 2020-07-17 |
| CN111425585B CN111425585B (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010263217.7A Active CN111425585B (en) | 2020-04-07 | 2020-04-07 | Circular spigot flange fixing structure |
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| Country | Link |
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| CN (1) | CN111425585B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU823064A1 (en) * | 1979-07-30 | 1981-04-23 | Стерлитамакское Производственноеобъединение "Сода" | Clamping arrangement |
| EP1110847A1 (en) * | 1999-12-21 | 2001-06-27 | Illinois Tool Works Inc. | Off-set adjusting nut |
| CN203831148U (en) * | 2014-05-22 | 2014-09-17 | 昆明水泵厂 | Adjustable and efficient tool flange for machining pump cover of IS pump |
| CN204175761U (en) * | 2014-10-23 | 2015-02-25 | 中天钢铁集团有限公司 | A kind of finishing mill umbrella gear box flanged surface screw locking structure |
| CN205577999U (en) * | 2016-04-26 | 2016-09-14 | 济南中铁重工轨道装备有限公司 | Shield constructs owner drive box body flange draw bail |
| CN207715574U (en) * | 2017-11-14 | 2018-08-10 | 重庆齿轮箱有限责任公司 | A kind of anti-loosing connecting structure of output shaft and output flange |
| CN208557365U (en) * | 2018-06-21 | 2019-03-01 | 襄阳中车电机技术有限公司 | A kind of flange bolt press-loading apparatus |
| CN208601069U (en) * | 2018-07-25 | 2019-03-15 | 芜湖通力电机有限责任公司 | It is a kind of for processing the positioning tool of eccentric flange lid |
| CN209959854U (en) * | 2019-06-17 | 2020-01-17 | 青岛安盛信达机电科技有限公司 | Eccentric bush of cylinder head cover flange face |
-
2020
- 2020-04-07 CN CN202010263217.7A patent/CN111425585B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU823064A1 (en) * | 1979-07-30 | 1981-04-23 | Стерлитамакское Производственноеобъединение "Сода" | Clamping arrangement |
| EP1110847A1 (en) * | 1999-12-21 | 2001-06-27 | Illinois Tool Works Inc. | Off-set adjusting nut |
| CN203831148U (en) * | 2014-05-22 | 2014-09-17 | 昆明水泵厂 | Adjustable and efficient tool flange for machining pump cover of IS pump |
| CN204175761U (en) * | 2014-10-23 | 2015-02-25 | 中天钢铁集团有限公司 | A kind of finishing mill umbrella gear box flanged surface screw locking structure |
| CN205577999U (en) * | 2016-04-26 | 2016-09-14 | 济南中铁重工轨道装备有限公司 | Shield constructs owner drive box body flange draw bail |
| CN207715574U (en) * | 2017-11-14 | 2018-08-10 | 重庆齿轮箱有限责任公司 | A kind of anti-loosing connecting structure of output shaft and output flange |
| CN208557365U (en) * | 2018-06-21 | 2019-03-01 | 襄阳中车电机技术有限公司 | A kind of flange bolt press-loading apparatus |
| CN208601069U (en) * | 2018-07-25 | 2019-03-15 | 芜湖通力电机有限责任公司 | It is a kind of for processing the positioning tool of eccentric flange lid |
| CN209959854U (en) * | 2019-06-17 | 2020-01-17 | 青岛安盛信达机电科技有限公司 | Eccentric bush of cylinder head cover flange face |
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| Publication number | Publication date |
|---|---|
| CN111425585B (en) | 2021-08-27 |
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