CN208420539U - A kind of bolt tension test fixture - Google Patents

Abstract

The utility model discloses a kind of Novel bolt stretching test fixture, including upper and lower two sleeve clamp, two sleeve clamps up and down respectively include the cavity plate and punch-pin of opening and closing left and right, placed cavity；It is equipped with groove in the middle part of the cavity plate, is equipped with tongue in the middle part of the punch-pin, in cavity plate and punch-pin or so fitting, groove and tongue are engaged to form U-shaped interconnecting piece；The placed cavity is the lower cavity by being formed after cavity plate and punch-pin or so fitting.It can effectively solve that installation is inconvenient, and operational sequence is cumbersome, and testing efficiency is low, and it is small that nut screws space, the caducous technical problem of bolt.

Description

A kind of bolt tension test fixture

Technical field

The utility model belongs to detection device spare and accessory parts technical field, and in particular to a kind of bolt tension test fixture.

Background technique

Bolt is made of nut and screw rod integrated molding, and screw bolt and nut is threadedly engaged realization and is fastenedly connected, wide It is general to be used for mechanical equipment and all kinds of structural members.Bolt as structural connection needs to reach certain mechanical property, such as tension Intensity, yield strength.The height of bolt mechanical property is directly related to the service life, safety in utilization and reliability of bolt, Therefore, bolt product before factory or before use, needs to carry out tensile property test.

It is the common method for detecting bolt mechanical performance that bolt material object, which stretches, and bolt tension test fixture is in detection device Critical component, it is universal it is practical be that tube-in-tube structure, the tensile property test of bolt are the masters of bolt Mechanics Performance Testing up and down Project is wanted, is fixed on compatible test fixture therewith by corresponding to the screw cap end of bolt and the end of thread, then will test Fixture is fixed on cupping machine, and cupping machine pulling test fixture carries out tensile property test, obtains the stretching of bolt Intensity.

A kind of bolt tension test fixture of patent No. CN201620651297.2 discloses a kind of bolt tension test fixture, Including clamp, upper end clamping column, bolt placed cavity, protective cover, lower end clamping column, bolt head, stop block, screw thread, connector and smooth spiral shell The top of upper end clamping column is arranged in column, clamp, and upper end clamping column is connected with bolt placed cavity by connector, in bolt placed cavity It is provided with stop block, bolt head is placed on above stop block, and smooth stud is provided with screw thread and lower end by stop block, smooth stud lower section Clamping column is connected, and bolt placed cavity outer surface is provided with protective cover.However found during actual test, this test fixture needs It constantly to be selected according to institute's bolt specification to be tested, replace, load and unload lower end clamping column, this results in carrying out multiple sized bolts Tension test, multi-process handling and cumbersome, the low technical problem of testing efficiency.

Patent No. CN201520004010.2 bolt tension test fixture discloses a kind of bolt tension test fixture In the nut fixed part for the setting that cooperates, be screwed portion, and nut fixed part and the portion of being screwed are provided with testing machine company Socket part；Nut fixed part is the cavity for being built-in with screw cap end sample lock chamber, and the portion of being screwed is solid for built-in threaded end sample Determine the cavity of chamber；The same side of nut fixed part cavity and the portion's cavity that is screwed, it is corresponding to offer T-type screw cap end sample peace Fill mouth and T-type end of thread sample installing port；Screw cap end screw slot, screw thread are offered on the nut connecting pin wall body of nut fixed part Threaded end screw slot is opened up on the threaded ends wall body of fixed part, and the fixed pad of nut is provided in screw cap end sample lock chamber Block is provided with the cushion block that is screwed in end of thread sample lock chamber, is all provided in the middle part of the fixed cushion block of nut and the cushion block that is screwed It is equipped with through-hole.This fixture is smaller for some nominal diameters, the short bolt of length, there is installation inconvenience, and nut screws space It is small, the caducous technical problem of bolt.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of bolt tension test fixture, inconvenient to solve installation, Operational sequence is cumbersome, and testing efficiency is low, and it is small that nut screws space, the caducous technical problem of bolt.

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of bolt tension test clamp Tool, including two sleeve clamps, can clamp between two parties bolt cylinder to be measured, it is characterised in that two sleeve clamp respectively includes folding knot The cavity plate and punch-pin of structure；It is equipped with groove in the middle part of the cavity plate, is equipped with tongue in the middle part of the punch-pin, when cavity plate and punch-pin are bonded, Groove and tongue are engaged to form interconnecting piece；Placed cavity is respectively set in the inside of two sleeve clamps, with store under clamp position to Survey the nut and nut of bolt cylinder.

Preferably, it is U-shaped that the groove and tongue, which are engaged the interconnecting piece to be formed,.

Preferably, two sleeve clamp further includes stop nut, and the cavity plate top has threaded hole, stop nut installation In threaded hole.

Preferably, the tongue top has blind hole, the fixed stop nut of cooperation.

Preferably, it is furnished with Gaskets in the blind hole.

Two sleeve clamp is simultaneously in use, test bolt length range is in 2.5cm~5cm.

When two sleeve clamp is used alone, bolt length range is tested in 5cm or more.

The utility model provides a kind of type bolt tension test fixture, have it is following the utility model has the advantages that

1. it is designed using left-right open-close, can be in advance by bolt to be measured, nut, auxiliary spacer is installed in place, then fast Quick-mounting enters fixture, is placed among stretching-machine flat pliers mouth, efficiently solves the fixture installation question of the bolt shorter for overall length.

2. under big pulling force effect, left and right fixture is displaced, in left and right fixture to prevent in bolt tension test process It is middle to design corresponding U-shaped slot, effectively solve the problems, such as this.

3. during bolt tension, part bolt fracture position can not be estimated, it may appear that bolt fracture is attached in fixture interface Closely, part bolt it is stuck in fixture can not fast quick-detach the phenomenon that, opening and closing left and right fixture design can effectively avoid this Phenomenon.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of stretching clamp；

Fig. 2 is the sectional view of stretching clamp；

Fig. 3 is cavity plate schematic diagram；

Fig. 4 is punch-pin schematic diagram；

Appended drawing reference: 1- stop nut, 2- cavity plate, 3- placed cavity, 4- auxiliary spacer, 5- nut, 6- bolt cylinder to be measured, 7- nut, 8- punch-pin, 9- threaded hole, 10- blind hole.

Specific embodiment

Fixture includes upper and lower two sets, can be with the use of also can be used alone, and every sleeve clamp includes cavity plate 2 as shown in Figure 3-4 And punch-pin 8,2 top of cavity plate have threaded hole 9, can install stop nut 1 as shown in Figs. 1-2, guarantee sample installation process Middle left and right fixture fitting.8 convex channel portion of punch-pin has blind hole 10, can cooperate with stop nut 1, it is ensured that fixture or so and anteroposterior position Set fixation.In addition as shown in Fig. 2, clamp ends design has the placed cavity 3 for accommodating bolt head and nut, test bolt includes column Body 6, nut 7, nut 5, mating usable Gaskets 4.

Embodiment 1

For overall length in the bolt of 2.5cm~5cm range, upper and lower two sets of fixture are used cooperatively, and as shown in Figs. 1-2, are used Method is as follows:

1, bolt 6 to be measured is screwed on into nut 5, adjusting nut screws in position.

2, take punch-pin 8 that nut 7 is put into upper sleeve clamp placed cavity 3, thread rod part 6 is placed in corresponding aperture.

3, cavity plate 2 is taken, its mode as shown in the figure is fastened on punch-pin 8.

4, position is adjusted, location nut 1. is screwed

5, it is walked with 2-4, bolt and nut position to be measured is placed in lower sleeve clamp placed cavity 3, screw two sleeve clamps up and down Positioning bolt 1.

6, mounted fixture up and down is placed among the included flat jaw clamp of stretching-machine, clamping can start to survey Examination.

Embodiment 2

For overall length in the bolt of 5cm or more, fixture can be used alone, and as shown in Figure 3-4, application method is as follows:

1, bolt 6 to be measured is screwed on into nut 5, adjusting nut screws in position.

2, take punch-pin 8 that nut 7 is put into upper sleeve clamp placed cavity 3, thread rod part 6 is placed in corresponding aperture.

3, cavity plate 2 is taken, its mode as shown in the figure is fastened on punch-pin 8.

4, position is adjusted, location nut is screwed.

5, mounted upper fixture is placed among the included flat jaw clamp of stretching-machine, bolt lower part directlys adopt drawing The common V-type jaw clamping of machine is stretched, clamps complete extension test up and down.

The utility model is not limited to above embodiment, no matter doing any change on its shape and structure or placement position Change, all to utilize cavity plate and punch-pin opening-closing structure, being engaged the bolt tension test fixture of U-shaped slot structure, to all fall within this practical new Within the protection scope of type.For example, the fixture is laterally disposed, U-shaped slot becomes T-type or other shapes and placed cavity Relative position changes, but is substantially all a kind of deformation of the utility model, is considered as falling in the utility model protection Within the scope of.

Claims (7)

1. a kind of bolt tension test fixture, including two sleeve clamps can clamp between two parties bolt cylinder to be measured, it is characterised in that Two sleeve clamp respectively includes the cavity plate and punch-pin of opening-closing structure；It is equipped with groove in the middle part of the cavity plate, is equipped in the middle part of the punch-pin Tongue, when cavity plate and punch-pin are bonded, groove and tongue are engaged to form interconnecting piece；Placement is respectively set in the inside of two sleeve clamps Chamber, to store the nut and nut of the bolt cylinder to be measured under clamp position.

2. a kind of bolt tension test fixture according to claim 1, it is characterised in that the groove and tongue are engaged shape At interconnecting piece be U-shaped.

3. a kind of bolt tension test fixture according to claim 1, it is characterised in that two sleeve clamp further includes limit Position nut, the cavity plate top have threaded hole, and stop nut is mounted in threaded hole.

4. a kind of bolt tension test fixture according to claim 3, it is characterised in that the tongue top has blind hole, The fixed stop nut of cooperation.

5. a kind of bolt tension test fixture according to claim 4, it is characterised in that be furnished with standard pad in the blind hole Piece.

6. a kind of bolt tension test fixture according to claim 1, it is characterised in that two sleeve clamp uses simultaneously When, bolt length range is tested in 2.5cm~5cm.

7. a kind of bolt tension test fixture according to claim 1, it is characterised in that two sleeve clamp is used alone When, bolt length range is tested in 5cm or more.