CN203658141U

CN203658141U - Device for tensile test of fragile rib material

Info

Publication number: CN203658141U
Application number: CN201320739551.0U
Authority: CN
Inventors: 王潘绣; 宣卫红; 陈育志; 陈晓洪; 王瑶; 王艳
Original assignee: Jinling Institute of Technology
Current assignee: Jinling Institute of Technology
Priority date: 2013-11-20
Filing date: 2013-11-20
Publication date: 2014-06-18
Anticipated expiration: 2023-11-20

Abstract

The utility model provides a device for a tensile test of a fragile rib material. The device comprises a sleeve 1, a constraining screw cap 2, a ball socket screw cap 3 and a ball head pull rod 4, wherein the inner part of the sleeve 1 is a circular-platform-shaped cavity and the inner diameters of the two ends are not equal; the constraining screw cap 2 is screwed on the outer part of one end with the smaller inner diameter of the sleeve 1; after the ball head pull rod 4 penetrates through the ball socket screw cap 3, the ball socket screw cap 3 is screwed on the outer part of one end with the larger inner diameter of the sleeve 1. When the device is used for carrying out the tensile test of the fragile rib material, a test sample does not need to be directly clamped so that the end part of the test sample is prevented from being subjected to an oversize transverse concentrated force and the end part of the test sample is not damaged; the test sample is firmly anchored and does not fall off in a testing process; the device can be conveniently repeatedly used.

Description

A kind of device for the tension test of fragility muscle material

Technical field

The utility model relates to test equipment field, especially a kind of device for fragility muscle material or other nonmetal bar tension tests.

Background technology

For reinforced concrete structure, in very long use procedure, the corrosion of reinforcing bar is unavoidable problem, and the damage of reinforced concrete structure, mostly because steel bar corrosion causes.Therefore, engineering research personnel wish to adopt the steel of non-corrosion to replace reinforcing bar, fundamentally eliminate reinforcing bar by the hidden danger of corrosion.Studying and using more new reinforcing steel bar to have the FRP muscle material such as glass fibre muscle, basalt fibre muscle at present.For new material, its most basic mechanical property must just can be applied after validation trial meets the demands.

Advanced composite material (ACM) muscle is different from reinforcing bar, is mostly hard brittle material, is not suitable for directly and testing machine directly clamps when tension test.The clamping of fixture block may, by muscle material transversely cutting, cause major injury to I haven't seen you for ages to xsect, causes drawing process at retaining part.For solving the Problem In Tensile Test of fragility muscle material, just need a kind of transition apparatus, effectively anchoring between this device and muscle material, and this device can with test machine clamping.Because new material muscle material intensity is very high, the load of tension test is also very large, and the horizontal of fragility muscle material is not vulnerable to again larger concentrated force effect, so effective anchoring at fragility muscle material tension test two ends is difficult problems.Therefore, design a kind of simple structure, can repeatedly apply, the device that can realize the tension test of fragility muscle material has certain actual application value.

Summary of the invention

For above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide a kind of device that is difficult for directly clamping and slip that can effectively solve in fragility muscle material tension test process.

For addressing the above problem, the utility model adopts following technical scheme:

A kind of device for the tension test of fragility muscle material, comprise sleeve pipe 1, constraint nut 2, ball-and-socket type nut 3, ball-head tension rod 4, sleeve pipe 1 inside is round table-like cavity, two ends internal diameter is not etc., constraint nut 2 is screwed in sleeve pipe 1 internal diameter compared with small end outside, ball-head tension rod 4, through after ball-and-socket type nut 3, is screwed in the sleeve pipe larger end of 1 internal diameter outside by ball-and-socket type nut 3.

Sleeve pipe 1, is put together by two semicanals, the round table-like cavity of inner formation after amalgamation, and round platform top circular diameter is D1, and outside is cylindrical shape, and periphery is offered external thread, and external diameter is D2, preferred, cavity inner wall is smooth.Adopt the inner beneficial effect for round table-like cavity to be, the structure glue entirety of sclerosis can not extracted from sleeve pipe, and axial tension can increase the extruding force of sleeve pipe to structure glue, can strengthen the cohesive action of structure glue and muscle material, thereby has solved the anchoring problem of muscle material.Adopt smooth inwall, its beneficial effect is the structure glue of easily removing sclerosis after off-test, and convenient continuation used.

Sleeve pipe 1 outside is cylindrical shape, periphery is offered external thread, constraint nut outside is right cylinder, internal cavities is second order right cylinder, and diameter is respectively D3 and D4, D3>D4, the cylindrical cavity place that constraint nut inside is D3 at diameter offers internal thread, D3=D2, D4 size and the fragility muscle material equal diameters that will stretch, D4<D1.Its beneficial effect is, constraint nut 2 and ball-and-socket type nut 3 are tightened by screw thread and sleeve pipe 1, and making the sleeve pipe 1 that two semicanals are put together is firmly an entirety, under pulling force effect, can not separate.

Wherein ball-and-socket type nut outside is right cylinder, and internal cavities is right cylinder and hemispheroidal combination, and cylinder diameter is D5, D5=D2, and the smaller circular hole of a diameter is offered at hemisphere top.There is hemispherical cavity ball-and-socket type nut 3 inside, and one end of ball-head tension rod is spheroid, ball-head tension rod 4 can pass ball-and-socket type nut 3, sphere diameter be greater than pull bar diameter and with ball-and-socket type nut 3 hemisphere cavity adaptations, the circular hole that pull bar can be offered through ball-and-socket type nut 3 tops.Preferably, hemispherical cavity and pull bar 4 ball sizes couplings and round and smooth as far as possible, its beneficial effect is that ball-head tension rod 4 end bulbs are placed in hemispherical cavity, can flexible rotating, this kind of structure can solve the eccentricity issues existing in tension test.

Technique scheme has following beneficial effect: device is simple, easy to operate, saves experimentation cost, reduces the wasting of resources.

Accompanying drawing explanation

Fig. 1 is the wherein front elevation of half of the utility model sleeve pipe 1.

Fig. 2 is the wherein side view of half of the utility model sleeve pipe 1.

Fig. 3 is the schematic diagram after 1 amalgamation of the utility model sleeve pipe.

Fig. 4 is the front elevation of the utility model constraint nut 2.

Fig. 5 is the vertical view of the utility model constraint nut 2.

Fig. 6 is the combination schematic diagram of the utility model constraint nut 2 and sleeve pipe 1.

Fig. 7 is the upward view of the utility model ball-and-socket type nut 3.

Fig. 8 is the front elevation of the utility model ball-and-socket type nut 3.

Fig. 9 is the schematic diagram of the utility model ball-head tension rod 4.

Figure 10 is the combination schematic diagram of the utility model ball-and-socket type nut 3 and ball-head tension rod 4.

Figure 11 is the assembling schematic diagram of the utility model sleeve pipe 1, constraint nut 2, ball-and-socket type nut 3 and ball-head tension rod 4.

Figure 12 is that the utility model is by one section of schematic diagram being placed in sleeve pipe of muscle material sample.

Figure 13 is the schematic diagram of the utility model sample one end and the installation of this device.

Figure 14 is the final schematic diagram of the utility model.

Embodiment

For a device for fragility muscle material tension test, comprise sleeve pipe 1, constraint nut 2, ball-and-socket type nut 3, ball-head tension rod 4.

As shown in Figure 1, Figure 2 and Figure 3, sleeve pipe 1, is put together by two semicanals, the round table-like cavity of inner formation after amalgamation.Sleeve pipe 1 outside is cylindrical shape, and periphery is offered external thread.

As shown in Figure 4, Figure 5 and Figure 6, constraint nut 2 is screwed in to the less one end of sleeve pipe 1 internal diameter.

As shown in Fig. 7, Fig. 8, Fig. 9 and Figure 10, there is hemispherical cavity ball-and-socket type nut 3 inside, and ball-head tension rod 4 one end are spherical, and ball-head tension rod 4 can pass ball-and-socket type nut 3, and ball-head tension rod 4 end bulbs are placed in hemispherical cavity, can flexible rotating.

As shown in figure 11, ball-head tension rod 4 passes after ball-and-socket type nut 3, then ball-and-socket type nut 3 is screwed in to the larger one end of sleeve pipe 1 internal diameter.

Although the utility model is illustrated with regard to preferred implementation and is described, only it will be understood by those of skill in the art that otherwise exceed claim limited range of the present utility model, can carry out variations and modifications to the utility model.

Claims

1. the device for the tension test of fragility muscle material, it is characterized in that: comprise sleeve pipe (1), constraint nut (2), ball-and-socket type nut (3), ball-head tension rod (4), sleeve pipe (1) inside is round table-like cavity, two ends internal diameter is not etc., constraint nut (2) is screwed in sleeve pipe (1) internal diameter compared with small end outside, ball-head tension rod (4), through after ball-and-socket type nut (3), is screwed in the larger end of sleeve pipe (1) internal diameter outside by ball-and-socket type nut (3).

2. device according to claim 1, is characterized in that: described sleeve pipe (1) is put together by two semicanals, the round table-like cavity of inner formation after amalgamation, and round platform top circular diameter is D1, and outside is cylindrical shape, and periphery is offered external thread, and external diameter is D2.

3. device according to claim 2, it is characterized in that: described constraint nut (2) is outside is right cylinder, internal cavities is second order right cylinder, diameter is respectively D3 and D4, D3 is greater than D4, and the cylindrical cavity place that constraint nut (2) inside is D3 at diameter offers internal thread, D3=D2, D4 size and the fragility muscle material equal diameters that will stretch, D4 is less than D1.

4. device according to claim 2, is characterized in that: described ball-and-socket type nut (3) is outside is right cylinder, and internal cavities is right cylinder and hemispheroidal combination, and cylinder diameter is D5, D5=D2, and the smaller circular hole of a diameter is offered at hemisphere top.

5. device according to claim 1, it is characterized in that: one end of described ball-head tension rod (4) is spheroid, sphere diameter be greater than pull bar diameter and with ball-and-socket type nut (3) hemisphere cavity adaptation, the circular hole that pull bar (4) can be offered through ball-and-socket type nut (3) top.