CN109253141B - Pin shaft fixing structure - Google Patents
Pin shaft fixing structure Download PDFInfo
- Publication number
- CN109253141B CN109253141B CN201811356426.5A CN201811356426A CN109253141B CN 109253141 B CN109253141 B CN 109253141B CN 201811356426 A CN201811356426 A CN 201811356426A CN 109253141 B CN109253141 B CN 109253141B
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- CN
- China
- Prior art keywords
- pin shaft
- point
- groove
- edge
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Classifications
-
- 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
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/12—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with locking-pins or split-pins thrust into holes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Abstract
The invention relates to a pin shaft fixing structure, aiming at solving the problems of relatively complex working procedures and high cost caused by the fact that an ear plate and a pin shaft are required to be welded in the existing pin shaft fixing structure; the utility model provides a pin shaft fixing structure, includes base, round pin axle, be provided with the round pin shaft hole on the base, the round pin axle cartridge is in the round pin shaft hole, its characterized in that still includes through bolt fixed mounting the fixed plate on the base plate, the fixed plate has at least one straight flange, be provided with at least one recess on the round pin axle tip cylinder side, the straight flange of fixed plate is located the recess of round pin axle and with the laminating of recess bottom surface. In the invention, the fixing plate is matched with the groove of the pin shaft, so that the pin shaft cannot move axially, and meanwhile, the straight edge on the fixing plate is matched with the bottom surface of the groove, so that the pin shaft can be prevented from rotating axially and moving radially, and the purpose of fixing the pin shaft is achieved.
Description
Technical Field
The invention relates to a pin shaft, in particular to a pin shaft fixing structure.
Background
The pin is usually used for connecting two hinged parts, and the size of the pin is usually large due to the large stress in engineering machinery. To prevent the pin from rotating in the pin bore, the pin is usually secured to one of the hinge parts. The existing pin shaft fixing method is that an ear plate is arranged at the end part of a pin shaft, the ear plate is fixedly connected with a pin shaft body, for example, the ear plate is welded with the pin shaft body, a through hole is arranged on the ear plate, and a fixing bolt penetrates through the through hole to be matched with a threaded hole on a hinged part, so that the ear plate is fixed, and the pin shaft is fixed. In the pin shaft fixing structure, the lug plate is welded with the pin shaft body, and the process is relatively complicated and high in cost.
Disclosure of Invention
The invention aims to solve the technical problems of relatively complex process and high cost caused by the fact that an ear plate and a pin shaft need to be welded in the conventional pin shaft fixing structure, and provides a pin shaft fixing structure which is simple in structure and does not need to be welded.
The technical scheme for realizing the purpose of the invention is as follows: the utility model provides a pin shaft fixing structure, includes base, round pin axle, be provided with the round pin shaft hole on the base, the round pin axle cartridge is in the round pin shaft hole, its characterized in that still includes through bolt fixed mounting the fixed plate on the base, the fixed plate has at least one straight flange, be provided with at least one recess on the round pin axle tip cylinder side, the straight flange of fixed plate is located the recess of round pin axle and with the laminating of recess bottom surface. In the invention, the fixing plate is matched with the groove of the pin shaft, so that the pin shaft cannot move axially, and meanwhile, the straight edge on the fixing plate is matched with the bottom surface of the groove, so that the pin shaft can be prevented from rotating axially and moving radially, and the purpose of fixing the pin shaft is achieved.
Furthermore, in the pin shaft fixing structure, the fixing plate is further provided with a second edge which forms an L shape with the straight edge, and the second edge is in contact connection with the cylindrical side surface of the end part of the pin shaft. Furthermore, the maximum vertical distance between the contact point between the second edge and the pin shaft and the bottom surface of the groove is greater than the distance between the axis of the pin shaft and the bottom surface of the groove. The second edge can be a straight edge or an arc-shaped edge attached to the side surface of the cylinder at the end part of the pin shaft. Furthermore, the fixing plate is fixedly connected with the base only through one bolt, the bolt is arranged on the fixing plate and is arranged in a sector area which takes the point A as the center of a circle and respectively takes the extension line of the connecting line of the axis of the pin shaft and the point A and the radial line passing through the point A and the point B as the boundary, the point A is a contact point which has the largest vertical distance with the bottom surface of the groove in the contact point of the second edge on the fixing plate and the side surface of the cylinder of the pin shaft, and the point B is a point which is closest to the point A on the bottom surface of the groove.
Furthermore, in the pin shaft fixing structure, the fixing plate may further include a third edge connected to the other end of the straight edge, the second edge, the third edge and the straight edge form a trapezoidal recess, the pin shaft is located in the trapezoidal recess, and the second edge and the third edge are both in contact connection with the side surface of the pin shaft cylinder. Similarly, the third side may be a straight side or an arc-shaped side attached to the cylindrical side of the end of the pin. At the moment, the fixing plate is fixedly connected with the base through only one bolt, and the purpose of preventing rotation is achieved.
Compared with the prior art, the pin shaft fixing structure does not need welding, the groove is formed in the cylindrical side face of the pin shaft and matched with the straight edge of the fixing plate fixedly installed on the base, the purpose of preventing the pin shaft from moving axially, radially and circumferentially is achieved, and the groove is formed for welding, so that the process is simple and the cost is low.
Drawings
Fig. 1 is an exploded view of the pin fixing structure of the present invention.
Fig. 2 is an assembly view of the pin fixing structure of the present invention.
Fig. 3 is a schematic diagram of the arrangement positions of the bolts in the pin fixing structure of the present invention.
Part names and serial numbers in the figure:
the hinge pin comprises a pin shaft 1, a groove 11, a fixing plate 2, a through hole 21, a gasket 3, a bolt 4, a hinge rotating part 5, a hinge seat 6, a pin shaft hole 61 and a threaded hole 62.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 1 and fig. 2, in this embodiment, the pin fixing structure includes a hinge base 6 as a base, a pin 1, a bolt 4, a fixing plate 2 and a gasket 3, the hinge base 6 is hinged to the end of the hinge rotating member 5 through the pin 1, the hinge base 6 is provided with a pin hole 61 and a threaded hole 62, the pin 1 is inserted into the pin hole 61, the fixing plate 2 is provided with a through hole 21, the bolt 4 penetrates through the through hole 21 on the fixing plate 2 and is connected with the threaded hole 62 in a threaded fit manner, so that the fixing plate 2 is fixedly mounted on the hinge base 6, the gasket 3 is sleeved on the bolt, and the bolt 4 is anti-loose.
As shown in fig. 1, a groove 11 is formed on the cylindrical side surface of the end portion of the pin shaft 1, the fixing plate is L-shaped and has two crossed straight edges, wherein the shorter straight edge is a second edge, the longer straight edge is embedded in the groove 11 of the pin shaft and is in contact fit with the bottom surface of the groove 11, and the second edge is in contact connection with the cylindrical side surface of the end portion of the pin shaft. The length of the second edge is larger than the distance from the axis of the pin shaft to the bottom surface of the groove. The second edge can be a straight edge or an arc-shaped edge attached to the side surface of the cylinder at the end part of the pin shaft.
In this embodiment, the fixing plate may be fixed by two bolts or may be fixed by one bolt. When the fixing plate 2 is fixedly installed by using one bolt, the position of the bolt is limited, for example, the bolt is limited in one area, as shown in fig. 3, the bolt is arranged in a fan-shaped area of the fixing plate which is fixedly connected with the base only through one bolt, the bolt is arranged on the fixing plate, and the circle center of the bolt is the point a, the fan-shaped area is respectively bounded by the extension line of the connecting line of the axis of the pin shaft and the point a and the ray passing through the point a and the point B, the point a is the contact point with the largest vertical distance from the bottom surface of the groove in the point where the second edge of the fixing plate is contacted with the side surface of the cylinder of the pin shaft, and the point B is the point on. Thereby avoiding the rotation of the pin shaft and the rotation of the fixing plate around the bolt.
In this embodiment, have on the fixed plate and contact and be two limits that L shape was arranged with the round pin axle, the fixed plate structure of this kind of shape is comparatively simple, also is convenient for process, and the round pin axle also can be better fixed simultaneously. The fixing plate can also be used for fixing the pin shaft only by the contact and matching of one straight edge of the fixing plate and the bottom surface of the groove of the pin shaft, and the shape of a complex point can also be used, for example, a second edge and a third edge which are connected with two ends of the straight edge are formed, the second edge, the third edge and the straight edge form a recess, the pin shaft is positioned in the recess, and the second edge and the third edge are both contacted with the cylindrical side surface of the end part of the pin.
Claims (2)
1. A pin shaft fixing structure comprises a base and a pin shaft, wherein a pin shaft hole is formed in the base, the pin shaft is inserted into the pin shaft hole, and the pin shaft fixing structure is characterized by further comprising a fixing plate fixedly installed on the base through a bolt, the fixing plate is L-shaped and provided with a straight edge and a second edge forming an L shape with the straight edge, a groove is formed in the side face of a cylinder at the end part of the pin shaft, the straight edge of the fixing plate is located in the groove of the pin shaft and attached to the bottom face of the groove, and the second edge is in contact connection with the side face of the cylinder at the end part of the; the fixing plate is fixedly connected with the base only through one bolt, the bolt is arranged on the fixing plate and is arranged in a sector area which takes a point A as a circle center and respectively takes an extension line of a connecting line of the axis of the pin shaft and the point A and a ray passing through the point A and the point B as boundaries, the point A is a contact point which has the largest vertical distance with the bottom surface of the groove in a point where a second edge on the fixing plate is contacted with the side surface of the cylinder of the pin shaft, and the point B is a point which is closest to the point A on the bottom surface of the groove.
2. The pin securing structure according to claim 1, wherein the maximum vertical distance between the contact point between said second edge and said pin and the bottom surface of the groove is greater than the distance between the axis of the pin and the bottom surface of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356426.5A CN109253141B (en) | 2018-11-15 | 2018-11-15 | Pin shaft fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356426.5A CN109253141B (en) | 2018-11-15 | 2018-11-15 | Pin shaft fixing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109253141A CN109253141A (en) | 2019-01-22 |
| CN109253141B true CN109253141B (en) | 2021-03-16 |
Family
ID=65043875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811356426.5A Active CN109253141B (en) | 2018-11-15 | 2018-11-15 | Pin shaft fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109253141B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2382882Y (en) * | 1999-07-07 | 2000-06-14 | 伍志勇 | Connection fastening bolt pin |
| CN202789964U (en) * | 2012-09-14 | 2013-03-13 | 上海中联重科桩工机械有限公司 | Pin shaft fixing structure and engineering machinery comprising same |
| CN203335576U (en) * | 2013-06-24 | 2013-12-11 | 中铁二十局集团西安工程机械有限公司 | Axial positioning structure of towed impacting road roller rocker connecting shaft |
| CN203879882U (en) * | 2014-05-16 | 2014-10-15 | 中联重科股份有限公司 | Hinge pin locking structure |
| CN206175428U (en) * | 2016-11-14 | 2017-05-17 | 南阳二机石油装备集团股份有限公司 | Enclosed type axle head locking device |
| CN207539144U (en) * | 2017-12-07 | 2018-06-26 | 徐州徐工基础工程机械有限公司 | One kind can locking axis pin plug baffle coupling arrangement |
-
2018
- 2018-11-15 CN CN201811356426.5A patent/CN109253141B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109253141A (en) | 2019-01-22 |
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