CN206504858U - The plug and test device of a kind of nut load test - Google Patents

Abstract

The utility model provides the plug and test device of a kind of nut load test, the plug of nut load test includes plug body and connector, the plug body includes the first forced section that diameter is sequentially reduced and is sequentially connected, first limiting section and barred body, the barred body is extended from first limiting section to the connector, the one end of the barred body away from first limiting section is provided with external screw thread, the connector includes the second forced section, the second limiting section for being connected with the second forced section and through second forced section and the through hole of second limiting section, the diameter of second limiting section is less than the diameter of second forced section, when testing the load of nut to be measured, the internal thread of the barred body through the external screw thread and the nut to be measured of the through hole spins.The plug of nut load test of the present utility model, can avoid occurring stress deflection, prevent the mandrel fracture of nut load test, and ensure test accuracy.

Description

The plug and test device of a kind of nut load test

Technical field

The utility model is related to Automobile Measuring Techniques field, more particularly to a kind of plug of nut load test and test are filled Put.

Background technology

As automobile assembling technology develops, the automobile such as car, high chassis offroad vehicle and commercial vehicle has become more and more general And, automobile turns into indispensable instrument in people's go off daily, people for automobile performance requirement also more and more higher, especially It is the security of automobile.Nut as the fastener in automobile assembling pith, it is real generally by the cooperation with bolt The connection of each part of existing automobile.When driving, nut can cause automobile event occur once causing failure because load is excessive Barrier, for example：When fastening the nut failure of wheel, wheel may be caused to drop, so as to influence the traffic safety of automobile.Therefore, Load test is carried out to nut, for ensureing that the security of automobile is most important.

It is typically that nut is arranged on plug during nut load test, and plug and stretching clamp is coordinated, So as to realize the load test to nut.But, in test process, stress deflection easily occurs for existing plug, may lead Mandrel fracture is caused, or makes the degree of accuracy of load test low.It can be seen that, during current nut load test, exist plug because The problem of stress deflection causes mandrel fracture or low test accuracy.

Utility model content

The utility model embodiment provides the plug and test device of a kind of nut load test, to solve current nut During load test, there is plug because stress deflects the problem of causing mandrel fracture or low test accuracy.

In a first aspect, the utility model embodiment provide a kind of plug of nut load test, including plug body with And connector, the first forced section, the first limiting section and rod that the plug body is sequentially reduced and is sequentially connected including diameter Body, the barred body is extended from first limiting section to the connector, the one end of the barred body away from first limiting section External screw thread is provided with, the connector includes the second forced section, the second limiting section being connected with the second forced section and through institute The through hole of the second forced section and second limiting section is stated, the diameter of second limiting section is less than the straight of second forced section Footpath, when testing the load of nut to be measured, the barred body passes through the external screw thread of the through hole and the internal thread of the nut to be measured Spin.

On the other hand, the utility model embodiment also provides a kind of test device of nut load test, including above-mentioned The plug of nut load test.

So, in the utility model embodiment, the plug of nut load test includes plug body and connector, described Plug body includes diameter the first forced section, the first limiting section and the barred body that are sequentially reduced and are sequentially connected, the barred body by First limiting section extends to the connector, and the one end of the barred body away from first limiting section is provided with external screw thread, The connector include the second forced section, the second limiting section for being connected with the second forced section and through second forced section and The through hole of second limiting section, the diameter of second limiting section is less than the diameter of second forced section, to be measured when testing During the load of nut, the internal thread of the barred body through the external screw thread and the nut to be measured of the through hole spins.So, in spiral shell During female load test, the plug of nut load test can be avoided under the limitation of the first limiting section and the second limiting section Generation stress is deflected, and prevents the mandrel fracture of nut load test, and ensure test accuracy.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme of the utility model embodiment, the utility model embodiment will be retouched below The accompanying drawing used required in stating is briefly described, it should be apparent that, drawings in the following description are only the utility model Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with root Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is the structural representation of the plug of nut load test of the present utility model；

Fig. 2 is the structural representation of the fixture of the test device of nut load test of the present utility model.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is a part of embodiment of the utility model, rather than whole implementation Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made The every other embodiment obtained, belongs to the scope of the utility model protection.

Please referring also to Fig. 1 and Fig. 2, Fig. 1 are the structural representations of the plug of nut load test of the present utility model；Figure 2 be the structural representation of the installing plate of the plug of nut load test in Fig. 1.As depicted in figs. 1 and 2, above-mentioned nut load is surveyed The plug 10 of examination, including plug body 11 and connector 12, plug body 11 include what diameter was sequentially reduced and was sequentially connected First forced section 111, the first limiting section 112 and barred body 113, barred body 113 are extended from the first limiting section 112 to connector 12, The one end of barred body 113 away from the first limiting section 112 is provided with external screw thread 1130, and connector 12 includes the second forced section 121, with the Two forced sections 121 connection the second limiting section 122 and through the second forced section 121 and the through hole 123 of the second limiting section 122, The diameter of second limiting section 122 is less than the diameter of the second forced section 121, when testing the load of nut (not shown) to be measured, rod The internal thread of body 113 through the external screw thread 1130 and nut to be measured of through hole 123 spins.

In the utility model embodiment, when carrying out load test to nut to be measured, by the plug 10 of nut load test Threadedly it is connected with nut to be measured, and nut to be measured is located at one of the second forced section 121 away from the second limiting section 122 Side, and the plug 10 and nut to be measured of cooperation are installed in the device of nut load test.Due to the first limiting section 112 and Two limiting sections 122 are arranged in the device of nut load test, can limit the plug 10 of nut load test in test process Displacement beyond middle generation Impact direction, it is to avoid the stress of plug 10 of nut load test deflects, so as to avoid preventing spiral shell The plug 10 of female load test is broken, it is ensured that the degree of accuracy of test.

Wherein, the diameter of the first forced section 111, the first limiting section 112 and barred body 113 is reduced successively, and barred body 113 with Nut to be measured is threadedly connected.For example：A diameter of Φ 36 of first forced section 111, the first limiting section 112 can be set A diameter of 22, the specification of nut to be measured is M10, and the external screw thread 1130 of barred body 113 is processed into specification for M10.

Optionally, plug body 11 also includes (scheming not through the mounting hole of the first forced section 111 and the first limiting section 112 Show), barred body 113 passes through mounting hole, and barred body 113 is connected with the first forced section 111 and the first limiting section 112.So, by setting Barred body 113 is put independently of the first forced section 111 and the first limiting section 112, when barred body 113 is damaged in test process, Barred body 113 can individually be changed.

Further alternative, barred body 113 is threadedly connected with the first forced section 111 and the first limiting section 112, from And on the premise of ensureing that the forced section 111 of barred body 113 and first and the first limiting section 112 are connected firmly, make replacing barred body 113 It is simple to operate and conveniently.

In the utility model embodiment, in order that the load-carrying ability of the plug 10 of nut load test is strong, and processing is simple, Optionally, the first forced section 111 is integrally formed with the first limiting section 112；Second forced section 121 and the one of the second limiting section 122 Shaping.

Optionally, the one end of barred body 113 away from external screw thread 1130 is provided with head 114.So, when changing barred body 113, Barred body 113 can be rotatably connected in mounting hole by rotatable head 114, so that changing the operation of barred body 113 more simply and just It is prompt.

In the utility model embodiment, optionally, the Rockwell hardness of barred body 113 is more than or equal to 45, thereby may be ensured that The hardness of barred body 113, makes the service life of barred body 113 long.Wherein it is possible to by carrying out Quenching Treatment to barred body 113, lift it Hardness.Further alternative, barred body 113 is made up of stainless steel material, for example：Barred body 113 can be made up of 40Cr steel, further Lift the service life of barred body 113.

Optionally, connector 12 also includes positioned at the second forced section 121 and the groove away from the side of the second limiting section 122 (not shown), when testing the load of nut to be measured, nut to be measured, which coordinates, to be arranged in groove, so that during load test Nut stress equalization to be measured.Further alternative, when testing the load of nut to be measured, nut to be measured is equipped with groove It is interior.

Based on the plug 100 of above-mentioned nut load test, the utility model embodiment also provides a kind of including above-mentioned nut The test device of the nut load test of the plug 100 of load test.

Fig. 2 is referred to, Fig. 2 is the structural representation of the fixture of the test device of nut load test of the present utility model. The test device of above-mentioned nut load test also includes the fixture for the plug 10 for clamping nut load test to be stretched 20, fixture 20 is including can be used for the first accommodating cavity 211 of accommodating first forced section 111, for housing the second forced section 121 Second accommodating cavity 212, for the first spacing hole 213 for coordinating with the first limiting section 112 and for matching somebody with somebody with the second limiting section 122 The second spacing hole 214 closed.

When needing to carry out load test to nut to be measured, the plug 10 of the nut load test of nut to be measured will be installed It is held in fixture 20, in test process, fixture 20 stretches the plug 10 of nut load test, realizes the load to nut to be measured Test, meanwhile, the first limiting section 112 and the second limiting section 122 are limited and the first spacing hole 213 and the second spacing hole 214 respectively It is interior, it can avoid stretching displacement of the plug 10 of nut load test on the direction beyond tensile force, make nut load test The stress of plug 10 will not deflect.

Because the structure of the test device body of nut load test is prior art, the knot of the plug of nut load test Structure has been described in detail in the above-described embodiments, therefore, and the test in the present embodiment for specific nut load test is filled The structure put is repeated no more.

It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right The protection domain asked is defined.

Claims (10)

1. a kind of plug of nut load test, it is characterised in that including plug body and connector, the plug body bag The first forced section, the first limiting section and barred body that diameter is sequentially reduced and is sequentially connected are included, the barred body is limited by described first Position portion extends to the connector, and the one end of the barred body away from first limiting section is provided with external screw thread, the connector The second limiting section for being connected including the second forced section, with the second forced section and through second forced section and second limit The through hole in position portion, the diameter of second limiting section is less than the diameter of second forced section, when the load for testing nut to be measured When, the internal thread of the barred body through the external screw thread and the nut to be measured of the through hole spins.

2. the plug of nut load test as claimed in claim 1, it is characterised in that the connector is also included positioned at described Second forced section and the groove away from the second limiting section side, it is described to be measured when testing the load of the nut to be measured Nut, which coordinates, to be arranged in the groove.

3. the plug of nut load test as claimed in claim 2, it is characterised in that when the load for testing the nut to be measured When, the nut to be measured is equipped with the groove.

4. the plug of nut load test as claimed in claim 1, it is characterised in that first forced section and described first Limiting section is integrally formed；Second forced section is integrally formed with second limiting section.

5. the plug of nut load test as claimed in claim 1, it is characterised in that the plug body also includes running through institute State the mounting hole of the first forced section and first limiting section, the barred body passes through the mounting hole, and the barred body with it is described First forced section and first limiting section connection.

6. the plug of nut load test as claimed in claim 5, it is characterised in that the barred body and first forced section Threadedly connected with first limiting section.

7. the plug of nut load test as claimed in claim 6, it is characterised in that the barred body is away from described externally threaded One end is provided with head.

8. the plug of nut load test as claimed in claim 1, it is characterised in that the Rockwell hardness of the barred body be more than or Equal to 45.

9. the plug of nut load test as claimed in any of claims 1 to 8 in one of claims, it is characterised in that the barred body by Stainless steel material is made.

10. a kind of test device of nut load test, it is characterised in that including as described in any one in claim 1 to 9 Nut load test plug.