Multi-caliber whole pipe stretching quick assembly and disassembly type chock plug

Abstract

The utility model relates to the technical field of machinery, in particular to a multi-caliber whole pipe stretching quick assembly and disassembly type chock plug. Comprising a cylindrical chock plug and a rod core, a cone-frustum-shaped through opening is formed in the center of the cylindrical chock plug, the cone-frustum-shaped rod core is arranged in the cone-frustum-shaped through opening, the cylindrical chock plug comprises a plurality of equant sectioning bodies, the sectioning bodies are arranged in a circumferential shape to form the cylindrical chock plug, spring grooves are formed in the outer sides of the sectioning bodies, and annular springs are arranged in the spring grooves. Compared with the prior art, the device is suitable for the tensile test of the pipe with the inner diameter and the wall thickness meeting certain conditions, meets the requirements of the whole pipe tensile test of the multi-caliber pipe, and saves a large amount of test period and sample processing cost compared with the traditional method for processing plugs with different sizes in different pipe inner diameters.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical technical field, concretely is a kind of multi-caliber whole pipe stretching quick assembly and disassembly plug. BACKGROUND

[0002] At present, when whole pipe stretching test is carried out to pipe material, the pipe material is clamped by the chuck of hydraulic universal testing machine, and then the two ends of the pipe material are blocked by plug. However, since there are many types of pipe material, there are pipe materials with several sizes of caliber, different sizes of plug need to be provided, which is high in cost and easy to be mistaken, time-consuming and laborious. SUMMARY

[0003] The utility model discloses to overcome the insufficient of prior art, provide a kind of multi-caliber whole pipe stretching quick assembly and disassembly plug.

[0004] To achieve the above object, a kind of multi-caliber whole pipe stretching quick assembly and disassembly plug is designed, including cylindrical plug, stick core, cylindrical plug center is equipped with conical frustum mouth, conical frustum mouth is equipped with the stick core of conical frustum, the cylindrical plug includes several equal division split body, several split body is arranged in circumferential, forms cylindrical plug, split body outside is equipped with spring groove, and annular spring is equipped in spring groove.

[0005] The spring groove of adjacent split body is communicated.

[0006] The slope of the conical frustum mouth is 1:5-1:15.

[0007] The end of the cylindrical plug is equipped with shoulder.

[0008] The tail of the stick core is equipped with groove.

[0009] Compared with prior art, the utility model is suitable for the pipe material stretching test that the inside diameter and wall thickness meet certain conditions, meets the demand of the whole pipe stretching test of multi-caliber pipe material, compared with the plug of different sizes that the traditional different pipe material inside diameter is processed, saves a large number of test cycle and sample processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the plan view of split body of the utility model.

[0011] Figure 2 It is the split body section view of the utility model.

[0012] Figure 3 It is the structure schematic diagram when split body of the utility model is spliced into cylindrical plug.

[0013] Figure 4 It is the structure schematic diagram of stick core of the utility model.

[0014] Figure 5 It is a top view of the rod core of the utility model.

[0015] Figure 6 It is a structure schematic view when the utility model is used.

[0016] Figure 7 It is Figure 6 A partial enlarged view at A in the middle.

[0017] Figure 8 It is Figure 6 A top view at A in the middle. DETAILED DESCRIPTION

[0018] The utility model will be further explained according to the drawings.

[0019] As Figures 1 to 5 Shown, the cylindrical plug head 1 center is equipped with the circular conical pass-through 2, and the circular conical pass-through 2 is equipped with the circular conical rod core 3, the cylindrical plug head 1 includes several equal division split body 1-1, and the several split body 1-1 is arranged in the circumferential shape, forms the cylindrical plug head 1, and the split body 1-1 outside is equipped with spring groove 1-2, and the spring groove 1-2 is equipped with annular spring 4. Split body 1-1 reaches the purpose of increasing and reducing outer diameter by cooperating with rod core 3.

[0020] The spring groove 1-2 of adjacent split body 1-1 is communicated, and the number of spring groove on the outside of each split body 1-1 is one or more than one during specific use, and the number of spring groove on the outside of each split body 1-1 in the embodiment is two.

[0021] The slope of the circular conical pass-through 2 is 1:5-1:15, and is matched with the slope of the rod core 3.

[0022] The cylindrical plug head 1 end is equipped with the shoulder 5, and the length in the embodiment is 1mm, and the shoulder is clamped in the end of test steel pipe 7, and plays the limiting effect.

[0023] The rod core 3 tail is equipped with recess 3-1, and is convenient for cooperating with sharp-headed hammer, and is quickly disassembled by knocking.

[0024] When the utility model is used, as Figures 6 to 8As shown, first, several segment bodies 1-1 are attached to the rod core 3, then the annular spring 4 is sleeved into the spring groove 1-2 of the segment body, so that the segment body 1-1 is fixed on the rod core 3. Then, according to the inner diameter size of the test steel pipe 7, the segment body 1-1 is moved on the rod core 3, so that the outer diameter of the segment body 1-1 is substantially equal to the inner diameter of the test steel pipe 2, and the segment bodies 1-1 are uniformly distributed on the rod core 3. Then, the adjusted segment body 1-1 and the rod core 3 are inserted into the test steel pipe 7 as a whole, and the tail of the rod core 3 is knocked to make the segment body 1-1 more closely contact with the test steel pipe 7. The other end of the test steel pipe 2 is also installed with the segment body 1-1 and the rod core 3. Finally, the two ends of the test steel pipe 2 are clamped by the original hydraulic pipe special clamp 6 of the hydraulic universal testing machine, so that the pipe joint whole pipe tensile test can be carried out. After the test is completed, the recess 3-1 at the tail of the rod core 3 is knocked by a pointed hammer, so that the rod core 3 is quickly separated from the segment body 1-1, and the segment body 1-1 and the rod core 3 are taken out.

[0025] In specific use, the number of segment bodies 1-1 is determined according to actual conditions, and is generally 2 equal parts or 4 equal parts, and is 4 equal parts in the embodiment.

Claims

1. A multi-caliber straight tube stretch quick disconnect plug, characterized by: The application relates to a cylindrical plug head, a rod core, a cylindrical plug head (1) provided with a conical frustum-shaped through hole (2) in the center, a conical frustum-shaped rod core (3) arranged in the conical frustum-shaped through hole (2), the cylindrical plug head (1) comprising a plurality of equal division split bodies (1-1), the plurality of split bodies (1-1) being arranged in a circumferential shape to form the cylindrical plug head (1), a spring groove (1-2) being arranged on the outer side of the split body (1-1), and an annular spring (4) being arranged in the spring groove (1-2).

2. A multi-bore integral tube stretch quick disconnect according to claim 1, wherein: The spring grooves (1-2) of the adjacent split bodies (1-1) are communicated.

3. The multi-bore integral tube stretch quick disconnect of claim 1, wherein: The slope of the conical frustum-shaped through hole (2) is 1:5-1:

15.

4. The multi-bore integral tube stretch quick disconnect of claim 1, wherein: The end of the cylindrical plug head (1) is provided with a shoulder (5).

5. The multi-bore integral tube stretch quick disconnect of claim 1, wherein: The tail of the rod core (3) is provided with a groove (3-1).

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