CN210375936U

CN210375936U - Special U-shaped bending pressure head for stress corrosion test

Info

Publication number: CN210375936U
Application number: CN201921285218.0U
Authority: CN
Inventors: 贾朋刚; 李景; 赵鹏; 吴双辉; 张妍
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-21
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a crooked pressure head of special U type of stress corrosion test comprises clamp plate, pillar, elbow, left baffle and right baffle. The pressing plate is connected with the support column through threads, and the height of the support column can be adjusted by adjusting the screwing depth of the threads. The pillar is inserted into the positioning groove at the top of the elbow to realize the positioning of the elbow and the connection with the elbow. The right side boss of left baffle, the left side recess that inserts the clamp plate is connected with the clamp plate, and the left side boss of right baffle, the right side recess that inserts the clamp plate are connected with the clamp plate, and left baffle and right baffle can reciprocate but can not control the drunkenness. The cylinder at the top of the pressing plate is connected with a pressure testing machine, the left baffle and the right baffle clamp the stress corrosion sample to ensure that the elbow is positioned at the center of the stress corrosion sample, and the gap between the supporting columns can penetrate through the bending angle of the stress corrosion sample fixed by the bolts. The utility model discloses the structure can be dismantled, convenient to use, with low costs, application nature is strong, compares the more convenient accurate U type bending test who has realized the stress corrosion sample of traditional pressure head.

Description

Special U-shaped bending pressure head for stress corrosion test

The technical field is as follows:

the utility model relates to a crooked pressure head of special U type of stress corrosion test is the crooked pressure head of a contrast tradition, the crooked pressure head of special U type of realization stress corrosion sample bending test more convenient and accurate.

Background art:

in the stress corrosion cracking test, a bending sample with bolt holes at two ends needs to be bent into a U shape, bolts penetrate through the bolt holes of the bending sample, and the bolts are combined to enable two arms of the bending sample to be parallel to apply stress. For a bending sample with high strength, if a traditional bending pressure head is adopted, the rebound and opening angle of the bending sample after bending is large, and a bolt is difficult to penetrate through two bolt holes of the bending sample. Moreover, the traditional pressure head cannot be accurately aligned with the central position of a bent sample, so that two bolt holes are asymmetric after the sample is bent, and the bolt is difficult to be combined. Therefore, it is necessary to develop a U-bend indenter dedicated to stress corrosion testing.

The invention content is as follows:

not enough more than, the utility model provides a crooked pressure head of special U type of stress corrosion test. This special U type bending pressure head compares traditional bending pressure head, and the more convenient more accurate bending test who realizes the stress corrosion sample.

The technical scheme of the utility model is that: the device is composed of a pressing plate (1), a support column (2), an elbow (3), a left baffle (4) and a right baffle (5); the pressing plate (1) is in threaded connection with the four supporting columns (2), and the four supporting columns (2) are inserted into four positioning grooves (7) at the top of the elbow (3) to realize the positioning of the elbow (3) and the connection with the elbow (3); the right side boss (8) of left baffle (4), left side recess (9) that insert clamp plate (1) are connected with clamp plate (1), and left side boss (11) of right baffle (5), right side recess (10) that insert clamp plate (1) are connected with clamp plate (1), and left baffle (4) and right baffle (5) are relative elbow (3) symmetry.

The technical effects are as follows:

the utility model discloses a left baffle and right baffle are blocked and are lived crooked sample, thereby make thereby the central point of crooked sample put just to guaranteeing crooked sample bolt hole symmetry after the bending to the pressure head, can demolish left baffle and right baffle after the crooked sample of location. After the bending sample is bent for 180 degrees, bolts penetrate through the bolt holes to combine the bending sample to avoid the rebound of two arms of the bending sample, and meanwhile, the four support columns inserted into the elbow are pulled out, and the bending sample applying stress is taken out. The next test can be continued after the four struts are inserted into the four positioning slots at the top of the elbow. The utility model discloses more convenient more accurate realization a stress corrosion sample's U type bending test.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of the pressing plate and the supporting pillar.

Figure 3 is a schematic view of the elbow construction.

Fig. 4 is a schematic structural view of the left baffle.

Fig. 5 is a schematic structural view of the right baffle.

Fig. 6 is a view from direction a of fig. 2.

Fig. 7 is a view from direction B of fig. 3.

The specific implementation mode is as follows:

the invention is further described below with reference to the accompanying drawings:

as shown in fig. 1, a U-shaped bending indenter for stress corrosion test comprises: the pressure plate comprises a pressure plate 1, a support column 2, an elbow 3, a left baffle 4 and a right baffle 5. The left baffle 4 and the right baffle 5 are symmetrical relative to the elbow 3 and can move up and down, but cannot move left and right.

As shown in fig. 2 and 3, the pressure plate 1 is connected with the four pillars 2 by screw threads, and the heights of the four pillars 2 can be adjusted by adjusting the screwing depths of the screw threads. The top of the pressing plate 1 is provided with a column 6, the left end is provided with a left groove 9, and the right end is provided with a right groove 10. The top of the elbow 3 is provided with four positioning grooves 7, and the four pillars 2 are inserted into the positioning grooves 7 to realize the positioning of the elbow 3 and connected with the elbow 3.

As shown in fig. 4 and 5, the left baffle 4 is provided with a right boss 8, and the right baffle 5 is provided with a left boss 11.

When the test device is used, the cylinder 6 is connected with a compression testing machine, the right side boss 8 of the left baffle 4 is inserted into the left side groove 9 of the pressing plate 1 and connected with the pressing plate 1, the left side boss 11 of the right baffle 5 is inserted into the right side groove 10 of the pressing plate 1 and connected with the pressing plate 1, the left baffle 4 and the right baffle 5 clamp a bending sample, and the left baffle 4 and the right baffle 5 are detached after the centering of the bending sample is realized. After the bending test sample is bent for 180 degrees, bolts penetrate through the bolt holes to clamp the bending test sample to avoid the rebound of two arms of the bending test sample, then the four supports 2 inserted into the four positioning grooves 7 are pulled out, the elbow 3 is separated from the four supports 2, and finally the bending test sample after the 180-degree bending stress is applied is taken out.

Finally, the scope of protection of the present invention is not limited to the embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. The utility model provides a special U type bending pressure head of stress corrosion test which characterized by: the device is composed of a pressing plate (1), a support column (2), an elbow (3), a left baffle (4) and a right baffle (5); the pressing plate (1) is in threaded connection with the four supporting columns (2), and the four supporting columns (2) are inserted into four positioning grooves (7) at the top of the elbow (3) to realize the positioning of the elbow (3) and the connection with the elbow (3); the right side boss (8) of left baffle (4), left side recess (9) that insert clamp plate (1) are connected with clamp plate (1), and left side boss (11) of right baffle (5), right side recess (10) that insert clamp plate (1) are connected with clamp plate (1), and left baffle (4) and right baffle (5) are relative elbow (3) symmetry.