CN220729904U

CN220729904U - High temperature creep test tool

Info

Publication number: CN220729904U
Application number: CN202321318674.7U
Authority: CN
Inventors: 李志杰; 魏健; 冯玉华; 逯世海; 姬秀岩
Original assignee: Shandong Netest Intelligent Equipment Co ltd
Current assignee: Shandong Netest Intelligent Equipment Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2024-04-05
Anticipated expiration: 2033-05-26

Abstract

The utility model provides a high temperature creep test frock, relates to mechanical field, includes outer anchor clamps, fixedly connected with adjusting sleeve on the outer anchor clamps, be equipped with the center pin in the adjusting sleeve, sliding fit has two expansion blocks on the center pin, the centre gripping has the work piece between expansion block and the adjusting sleeve. According to the utility model, the pipes with different pipe diameters are matched by virtue of the adjusting sleeve, the sliding design of the expansion block and the central shaft is used for avoiding the sliding of the expansion block, and the technical defects that the installation and the disassembly are complicated, only the pipes with fixed pipe diameters can be matched, and the applicability is poor in the prior art are overcome.

Description

High temperature creep test tool

Technical Field

The utility model relates to the field of machinery, in particular to a high-temperature creep test tool.

Background

Under the high temperature condition, the creep has very obvious influence on the components, in the high temperature creep experiment, the thin-wall pipe generally needs to be planed to be made into a semi-pipe shape, two ends are punched and inserted into pins and then connected into a testing machine, the integrity of the thin-wall pipe is damaged, and meanwhile, the stress mode of the pipe is changed, so that the effectiveness of the experiment is greatly reduced.

Chinese patent CN112798432B discloses a fixture for testing whole thin-wall pipes, which can clamp the thin-wall pipes, but the fixture is complicated to assemble and disassemble, and can only adapt to the pipes with fixed pipe diameters, so that the applicability is poor.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a high-temperature creep test tool which can avoid the problems.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a high temperature creep test frock, includes outer anchor clamps, fixedly connected with adjusting sleeve on the outer anchor clamps, be equipped with the center pin in the adjusting sleeve, sliding fit has two expansion blocks on the center pin, the centre gripping has the work piece between expansion block and the adjusting sleeve.

Further, an annular groove is formed in the bottom of the outer clamp, and a central hole is formed in the middle of the annular groove.

Further, a plurality of threaded holes are formed in the annular groove in an annular array mode.

Further, the adjusting sleeve comprises a positioning ring, a plurality of positioning holes are formed in the positioning ring, positioning bolts are arranged in the positioning holes, the positioning bolts penetrate through the positioning holes and are connected in the threaded holes in a threaded mode, and the positioning ring is connected with an adjusting pipe.

Further, the center shaft comprises a cylindrical section and a conical section, the cylindrical section is provided with a sliding sleeve, a sliding rod is arranged on the sliding sleeve in a sliding fit mode, one end of the sliding rod is connected with a pull ring, and the other end of the sliding rod is connected with an expansion block.

The beneficial effects of the utility model are as follows: according to the utility model, the pipes with different pipe diameters are matched by virtue of the adjusting sleeve, the sliding design of the expansion block and the central shaft is used for avoiding the sliding of the expansion block, and the technical defects that the installation and the disassembly are complicated, only the pipes with fixed pipe diameters can be matched, and the applicability is poor in the prior art are overcome.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is a bottom view of the outer clamp;

FIG. 3 is a schematic diagram of the structure of an expansion block;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

FIG. 5 is a partial enlarged view at B in FIG. 1;

in the figure: the outer clamp is 1, the annular groove is 11, the central hole is 12, the threaded hole is 13, the adjusting sleeve is 2, the adjusting tube is 21, the positioning ring is 22, the positioning hole is 23, the positioning bolt is 24, the central shaft is 3, the conical section is 31, the cylindrical section is 32, the sliding sleeve is 33, the expansion block is 4, the sliding rod is 41, the pull ring is 42, and the workpiece is 100.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1 to 2, a high-temperature creep test fixture comprises an outer fixture 1, wherein an adjusting sleeve 2 is fixedly connected to the outer fixture, a central shaft 3 is arranged in the adjusting sleeve, two expansion blocks 4 are slidably matched on the central shaft, and a workpiece 100 is clamped between the expansion blocks and the adjusting sleeve.

In at least one embodiment, the bottom of the outer clamp is provided with an annular groove 11, the middle of the annular groove is provided with a central hole 12, and a plurality of threaded holes 13 are annularly arrayed on the annular groove.

In at least one embodiment, the adjusting sleeve comprises a positioning ring 22, a plurality of positioning holes 23 are formed in the positioning ring, positioning bolts 24 are arranged in the positioning holes, the positioning bolts penetrate through the positioning holes and are in threaded connection with the threaded holes, and the positioning ring is connected with the adjusting tube 21.

In at least one embodiment, the central shaft comprises a cylindrical section 32 and a conical section 31, the cylindrical section is provided with a sliding sleeve 33, and a sliding rod 41 is matched with the sliding sleeve in a sliding manner, one end of the sliding rod is connected with a pull ring 42, and the other end of the sliding rod is connected with an expansion block.

The working mode, people can match the tubular product of different pipe diameters through adjusting the regulation pipe of different thickness, when hanging and drawing the center pin, because of expansion piece and center pin sliding fit, people first with outer anchor clamps cover in the expansion piece outside, then pulling rings for expansion piece and center pin are not hard up, then install tubular product between expansion piece and regulation pipe, expansion piece takes place relative movement with the center pin, realizes the clamp fastening of tubular product.

Other than the technical features described in the specification, all are known to those skilled in the art.

Claims

1. The utility model provides a high temperature creep test frock, its characterized in that includes outer anchor clamps, fixedly connected with adjusting sleeve on the outer anchor clamps, be equipped with the center pin in the adjusting sleeve, sliding fit has two expansion blocks on the center pin, the centre gripping has the work piece between expansion block and the adjusting sleeve.

2. The high temperature creep test fixture according to claim 1, wherein the bottom of the outer fixture is provided with an annular groove, and a central hole is provided in the middle of the annular groove.

3. The high temperature creep test fixture of claim 2, wherein the annular groove has a plurality of threaded holes in an annular array.

4. The high-temperature creep test fixture according to claim 3, wherein the adjusting sleeve comprises a positioning ring, a plurality of positioning holes are formed in the positioning ring, positioning bolts are arranged in the positioning holes, the positioning bolts penetrate through the positioning holes and are connected in the threaded holes in a threaded mode, and the positioning ring is connected with the adjusting pipe.

5. The high temperature creep test fixture according to claim 4, wherein the central shaft comprises a cylindrical section and a conical section, the cylindrical section is provided with a sliding sleeve, a sliding rod is slidably matched with the sliding sleeve, one end of the sliding rod is connected with a pull ring, and the other end of the sliding rod is connected with an expansion block.