CN202710392U - Force transfer device for spherical hinge type concrete limit tensile test - Google Patents
Force transfer device for spherical hinge type concrete limit tensile test Download PDFInfo
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- CN202710392U CN202710392U CN 201220390375 CN201220390375U CN202710392U CN 202710392 U CN202710392 U CN 202710392U CN 201220390375 CN201220390375 CN 201220390375 CN 201220390375 U CN201220390375 U CN 201220390375U CN 202710392 U CN202710392 U CN 202710392U
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- cock
- pull bar
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- transfer device
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Abstract
The utility model discloses a force transfer device for a spherical hinge type concrete limit tensile test. The force transfer device comprises a jacket, a cock and a pull bar, wherein the jacket is of a tubular structure and consists of a thick end and a thin end, and screw threads are arranged on the inner walls of the thick end and the thin end; a screw thread is arranged on the outer wall of the cock, and the screw thread on the cock is matched with the screw thread on the inner wall of the thick end; one end of the inner wall of the cock is of a semi-sphere shape; the pull bar is a rod-shaped object, one end of the pull bar is of a semi-sphere shape, the diameter of the semi-sphere shape is meshed with the diameter of the semi-sphere shape of one end of the inner wall of the cock, the other end of the pull bar is of a cylinder shape, and the diameter of the cylinder is smaller than the inner diameter of the cock. The contact surface of the cock and the pull bar is a semi-spherical surface, the semi-spherical contact can ensure that the cock and the pull bar flexibly turns; and the inner diameter of the cock is slightly bigger than the diameter of the cylindrical end of the pull bar, and the turning angle generated between the cock and the pull bar is in a suitable range, thus the lower section of a workpiece, which dumps in a big angle, is prevented from damaging devices and persons when the workpiece is broken. The force transfer device after being combined has the advantages of compact structure, light weight, and convenience for operation.
Description
Technical field
The utility model relates to a kind of load transfer device, is specifically related to a kind of spherical hinge type concrete limit stretching test load transfer device.
Background technology
The concrete limit stretching test is the distortion size of test concrete sample under the ultimate elongation load action.For the tensile force testing machine passes to test specimen, a kind of method is to imbed screw rod at test piece end, this screw rod is connected with an end of a load transfer device again, and the other end of load transfer device then links to each other with testing machine.Usually, the effect of load transfer device can also be adjusted the force direction that is subjected to of test specimen except transmitting pulling force, subdue the transmission of moment, makes test specimen be subjected to as far as possible single pulling force effect.Existing load transfer device is universal joint type, and its drawback is: adjustable-angle is excessive, causes test specimen to be fractured into after two sections, and the test specimen hypomere can wide-angle be toppled over damage equipment or personnel; Loosely organized, cause loading and unloading inconvenience.
Summary of the invention
The purpose of this utility model provides a kind of spherical hinge type concrete limit stretching test load transfer device, this apparatus structure is compact, and adjustable-angle is suitable, both can reach power transmission, subdue the effect that moment is transmitted, can prevent from again toppling over and damage equipment or personnel after the test specimen fracture, and easy to loading and unloading.
The purpose of this utility model is achieved in that the test of a kind of spherical hinge type concrete limit stretching uses load transfer device, comprises overcoat, cock and pull bar, and overcoat is round tube shape structure, is made of butt end and taper end, is equipped with screw thread at butt end and taper end inwall; The cock outer wall is provided with screw thread, and the screw thread in the cock matches with the inner thread of the butt end of overcoat; Cock inwall one end is that hemisphere is planar; Pull bar is a shaft, and an end is semisphere, and the hemisphere face diameter of this hemispheric diameter and cock inwall one end coincide, and the pull bar other end is cylindric, and body diameter is less than the internal diameter of cock.
It is hemisphere face that load transfer device, the surface of contact of cock and pull bar use in the test of spherical hinge type concrete limit stretching that the utility model provides, and hemisphere face contacts that can make between the two can flexible rotating; The internal diameter of cock is slightly larger than the cylindrical end diameter of pull bar, makes between the two generable rotational angle in OK range, and the wide-angle of hypomere is toppled over and damage equipment and personnel when having prevented the test specimen fracture.Load transfer device after the combination, compact conformation, light small and exquisite, convenient operation.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present utility model.
Embodiment
Structure of the present utility model is as shown in Figure 1: load transfer device is used in a kind of spherical hinge type concrete limit stretching test, comprises overcoat 1, cock 2 and pull bar 3, and overcoat 1 is round tube shape structure, is made of butt end 4 and taper end 5, is equipped with screw thread at butt end 4 and taper end 5 inwalls; Cock 2 outer walls are provided with screw thread, and the screw thread in the cock 2 matches with the inner thread of the butt end 4 of overcoat 1; Cock 2 inwalls one end is that hemisphere is planar; Pull bar 3 is a shaft, and an end is semisphere, and the hemisphere face diameter of this hemispheric diameter and cock 2 inwalls one end coincide, and pull bar 3 other ends are cylindric, and body diameter is less than the internal diameter of cock 2.
The utility model principle of work is as follows: during use, the cylindric end of pull bar 3 is penetrated cock 2, make the hemisphere face part close contact of the two, after the two combination, cock 2 is screwed in the butt end 4 of overcoats 1 again, load transfer device namely makes up and finishes.Then, the screw rod that is embedded in test piece end is screwed in taper end 5 screws of overcoat 1, the cylindrical end with pull bar 3 is clamped in the jaw of testing machine again, has namely finished being connected between test specimen and the testing machine.
Claims (1)
1. a spherical hinge type concrete limit stretching is tested and is used load transfer device, comprise overcoat (1), cock (2) and pull bar (3), it is characterized in that: overcoat (1) is round tube shape structure, is made of butt end (4) and taper end (5), is equipped with screw thread at butt end (4) and taper end (5) inwall; Cock (2) outer wall is provided with screw thread, and the screw thread in the cock (2) matches with the inner thread of the butt end (4) of overcoat (1); Cock (2) inwall one end is that hemisphere is planar; Pull bar (3) is a shaft, and an end is semisphere, and the hemisphere face diameter of this hemispheric diameter and cock (2) inwall one end coincide, and pull bar (3) other end is cylindric, and body diameter is less than the internal diameter of cock (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220390375 CN202710392U (en) | 2012-08-08 | 2012-08-08 | Force transfer device for spherical hinge type concrete limit tensile test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220390375 CN202710392U (en) | 2012-08-08 | 2012-08-08 | Force transfer device for spherical hinge type concrete limit tensile test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710392U true CN202710392U (en) | 2013-01-30 |
Family
ID=47590683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220390375 Expired - Fee Related CN202710392U (en) | 2012-08-08 | 2012-08-08 | Force transfer device for spherical hinge type concrete limit tensile test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928788A (en) * | 2016-04-25 | 2016-09-07 | 重庆大学 | Spherical hinge constraining method capable of realizing hinge joint compression on 1000-t testing machine |
-
2012
- 2012-08-08 CN CN 201220390375 patent/CN202710392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928788A (en) * | 2016-04-25 | 2016-09-07 | 重庆大学 | Spherical hinge constraining method capable of realizing hinge joint compression on 1000-t testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20190808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |