CN210531402U - Spherical connecting structure - Google Patents
Spherical connecting structure Download PDFInfo
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- CN210531402U CN210531402U CN201920719385.5U CN201920719385U CN210531402U CN 210531402 U CN210531402 U CN 210531402U CN 201920719385 U CN201920719385 U CN 201920719385U CN 210531402 U CN210531402 U CN 210531402U
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Abstract
The utility model provides a ball type connection structure, ball type connection structure is the sphere that the contact surface by two pairs of spherical packing ring (4, 5) formed, and the centre of a circle of this sphere is at the center of atress and loading hub connection part, the loading axle can wind the centre of a circle carries out the rotation of miniwatt. The structure has wide application and low cost, and can well realize the application of pure tension and compression loads. The device has the advantages of simple structure, low cost and short processing period, and can conveniently and quickly solve the problem of additional bending moment force brought in the process of applying tensile and compressive loads.
Description
Technical Field
The utility model relates to a static test loading technical field, in particular to ball type connection structure.
Background
In static tests, only transmission of tensile or compressive forces is generally required when loading, and additional bending moment forces are not expected to be loaded on the test piece. In the existing test method, the hydraulic cylinder and the test piece are connected by screw connection or hard contact, and the hydraulic cylinder cannot be completely centered with a loading point. Particularly, when the hard contact connection is adopted to apply pressure, the eccentric action is easily generated in the loading process, so that additional bending moment force is brought to a test piece.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a ball-type connecting structure, in which a stressed member is connected to a loading shaft; the spherical connecting joint is a spherical surface formed by contact surfaces of two pairs of spherical gaskets, the circle center of the spherical surface is at the center of a connecting part of the stress element and the loading shaft, and the loading shaft can rotate around the circle center in a small range.
Wherein each pair of spherical washers consists of a male spherical washer and a female spherical washer.
The male spherical washer and the stress piece are positioned by a circular boss, and the female spherical washer and the loading shaft are in clearance fit to realize the positioning of the female spherical washer.
The stress element is provided with a connecting through hole which is connected with the loading shaft through the connecting through hole, and the spherical centers of the contact surfaces of the two pairs of spherical washers are arranged at the geometric center of the connecting through hole of the stress element.
The loading shaft is composed of a hydraulic cylinder piston and a connecting bolt, and the connecting bolt is fixed with the stressed part through a nut.
Wherein the stress-bearing member is a beam.
Wherein, the design safety factor of the connecting bolt is more than 2.
The utility model discloses a ball-type connection structure makes the atress piece except receiving the loaded pressure of drawing, does not receive the effect of other additional forces. The device has the advantages of simple structure, low cost and short processing period, and can conveniently and quickly solve the problem of additional bending moment force brought in the process of applying tensile and compressive loads.
Drawings
Fig. 1 shows a ball-type connection structure of the present invention.
Fig. 2 is a partial schematic view of a connection portion of a ball-type connection structure.
1. Hydraulic cylinder 2, piston 3, beam 4, female spherical washer 5, male spherical washer 6, positioning boss 7 and nut
8. Connecting bolt
Detailed Description
The utility model discloses set up a ball-type connection structure on the atress piece and carry out the decoupling zero for the atress piece does not receive the effect of other additional forces except receiving the loaded pressure of drawing. In the ball type connecting structure, the center of a spherical surface formed by the contact surfaces of the two pairs of spherical washers 4 and 5 is at the center of the connecting part of the beam 3 as a stress element. Each pair of spherical washers is composed of a female spherical washer 4 and a male spherical washer 5, and the stress element can be a beam 3. The loading shaft formed by the piston of the hydraulic cylinder and the connecting bolt 8 can rotate around the circle center in a small range.
The ball-type connection structure of the present invention will be described in detail with reference to fig. 1.
In the spherical connecting structure, a stress part is connected with a loading shaft, the stress part is a beam 3, and the loading shaft is composed of a hydraulic cylinder piston 2 and a connecting bolt 8.
The spherical connecting joint is a spherical surface formed by the contact surfaces of the two pairs of spherical washers. Each pair of spherical washers consists of a male spherical washer 5 and a female spherical washer 4. The centre of the sphere is at the center of the connection part of the beam 3 serving as the stress piece and the loading shaft, so that the loading shaft formed by the hydraulic cylinder piston 2 and the connecting bolt 8 can rotate around the centre of the circle in a small range.
The male spherical washer 5 and the stressed part are positioned by the circular boss 6, and the female spherical washer 4 is in clearance fit with the loading shaft, so that the female spherical washer 4 is positioned.
The stress element is provided with a connecting through hole, the stress element is connected with the loading shaft through the connecting through hole, and the spherical centers of the contact surfaces of the two pairs of spherical washers 4 and 5 are positioned at the geometric center of the connecting through hole of the stress element.
The loading shaft is composed of a hydraulic cylinder piston 2 and a connecting bolt 8, and the connecting bolt 8 is fixed with the stressed part through a nut. The design safety factor of the connecting bolt is more than 2.
Utilize the utility model discloses a ball-type connection structure, when the atress piece takes place the displacement or warp, the displacement decoupling zero can be realized in the rotation of loading axle to do not bring the additional power for the atress piece. The structure has wide application and low cost, and can well realize the application of pure tension and compression loads. The device has the advantages of simple structure, low cost and short processing period, and can conveniently and quickly solve the problem of additional bending moment force brought in the process of applying tensile and compressive loads.
Claims (7)
1. A ball type connecting structure is characterized in that a stress element is connected with a loading shaft; the spherical connecting structure is a spherical surface formed by contact surfaces of two pairs of spherical gaskets (4 and 5), the circle center of the spherical surface is at the center of a connecting part of the stress element and the loading shaft, and the loading shaft can rotate around the circle center in a small range.
2. A ball-type connection according to claim 1, characterized in that each pair of spherical washers consists of a male spherical washer (5) and a female spherical washer (4).
3. The ball type connecting structure according to claim 2, characterized in that the male spherical washer (5) and the force-bearing member are positioned by a circular boss (6), and the female spherical washer (4) is in clearance fit with the loading shaft to realize the positioning of the female spherical washer (4).
4. Ball-type connection according to claim 1, characterized in that the force-receiving member has a connecting through-hole, through which it is connected to the loading shaft, the spherical centres of the contact surfaces of the two pairs of spherical washers (4, 5) being at the geometric centre of the connecting through-hole of the force-receiving member.
5. The ball-type connection according to any one of claims 1 to 4, wherein the loading shaft is formed by a hydraulic cylinder piston (2) and a connecting bolt (8), and the connecting bolt (8) is fixed with a force-receiving member by a nut (7).
6. A ball-type connection according to any one of claims 1-4, characterized in that the force-bearing member is a beam (3).
7. The ball-type connection according to claim 5, characterized in that the connection bolt (8) is designed with a safety factor greater than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920719385.5U CN210531402U (en) | 2019-05-17 | 2019-05-17 | Spherical connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920719385.5U CN210531402U (en) | 2019-05-17 | 2019-05-17 | Spherical connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531402U true CN210531402U (en) | 2020-05-15 |
Family
ID=70593366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920719385.5U Active CN210531402U (en) | 2019-05-17 | 2019-05-17 | Spherical connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458684A (en) * | 2022-02-14 | 2022-05-10 | 航天科工空间工程发展有限公司 | Hinge mechanism |
-
2019
- 2019-05-17 CN CN201920719385.5U patent/CN210531402U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458684A (en) * | 2022-02-14 | 2022-05-10 | 航天科工空间工程发展有限公司 | Hinge mechanism |
| CN114458684B (en) * | 2022-02-14 | 2022-10-28 | 航天科工空间工程发展有限公司 | Hinge mechanism |
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