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Repeatable usable drawing rivet, and method of use

A technology of pulling rivets and rivets, which is applied to rivets and other directions, and can solve problems such as poor firmness, non-reusable use, and weakened friction

Active Publication Date: 2007-12-26
MEISHAN CRRC FASTENING SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But the above-mentioned 'ring groove rivets' have the following disadvantages: i. cannot be reused, that is, it is difficult to disassemble structurally, and is only suitable for parts that do not need to be disassembled
iv. After riveting, all the pulling rods at the rear end of the separation tank are lost, resulting in a large waste of material
[0005] The (ZL01138321.6) disclosed by the Chinese patent is a detachable blind rivet, but the two mutually riveted bodies are riveted with threads, and the thread riveted is connected with the ring of the above-mentioned 'ring groove rivet'. Groove riveting ratio, poor firmness, easy to loosen, the friction between the two objects being connected is weakened, all the force is on the nail rod during operation, and it is easy to fatigue and fracture when subjected to vibration

Method used

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  • Repeatable usable drawing rivet, and method of use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] See Figure 1 and Figure 2. This embodiment 1 can be used repeatedly to pull the rivet, which is composed of a nail head 1, a nail shaft 2 and a collar 3. The nail head 1 is a pan head 1a. The nail rod 2 is composed of a ring groove section 2A at the front end which is extrusion-fitted with the collar 3 and a section of external thread section 2B at the rear end. There is a small transition section between the two sections for processing.

[0032] In this embodiment 1, the diameter of the rivet mark D=20mm can be repeatedly used, and the outer diameter of the ring groove segment is taken as D 2A = 19.2-20.2, length L of external thread section 2B 2B = 18.3-20.3. The outer diameter of the ring is D 31 = 30.3-31.3, the inner diameter takes the value D 32 = 19.3-20.3.

[0033] Riveting steps:

[0034] i. As shown in Figure 3, pass the nail rod 2 through the two objects 4 and 5 to be connected, the pan head 1a is close to the surface of the object 4, the collar 3 is sleeved on t...

Embodiment 2

[0037] Example 2: As shown in Figure 7, the nail head 1 uses a hexagonal flange 1b, which is used when the rivet needs to be prevented from rotating during the riveting process. The rest of the structure and method of use are exactly the same as in Example 1.

[0038] See Figure 1 and Figure 2. In the second embodiment, the diameter of the rivet mark can be repeated D=16mm, and the outer diameter of the ring groove segment is taken as D 2A =15.1-16.1, length L of external thread section 2B 2B =17.2-19.2, the outer diameter of the collar is taken as D 31 =25.1-26.1, the inner diameter takes the value D32 =5.8-16.8.

Embodiment 3

[0039] Embodiment 3: As shown in Fig. 8, the nail head 1 adopts an eye ring 1c, which is used when other parts need to be installed on the rivet. The rest of the structure and method of use are exactly the same as in Example 1.

[0040] See Figure 1 and Figure 2. In this embodiment 3, rivets can be used repeatedly to mark the diameter D=16mm, and the outer diameter of the ring groove segment takes the value D 2A =15.1-16.1, length L of external thread section 2B 2B =17.2-19.2, the outer diameter of the collar is taken as D 31 =25.1-26.1, the inner diameter takes the value D 32 =5.8-16.8.

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PUM

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Abstract

This invention relates to a pull-rivet used repeatedly and its usage, in which the rivet is composed of a nailhead, a nailrod and a ringer, and the nailrod is composed of a ring slot section at the front extrusion-matched with the ringer and an outer screw part at the end, which eliminates original separation groove and end nail-rod compared with present ring-slot rivets and saves material by 40%, the outer screw thread part of the rear end of a nail rod is used in either connecting with the screw thread rotating inner jacket of the riveter or removing the connection and forms a cutter with a blade in the jacket of the riveter, which moves forward along the jacket axially to cut ringers down and nail rod can be used again.

Description

[0001] (1) Technical field: The reusable pull rivet and method of use of the present invention belong to the category of fasteners (F16B). (2) Background technology: [0002] For a long time, railroad trucks, automobiles, bridges and other steel structures have used ordinary rivets that are hot riveted, and their chemical composition and mechanical properties are equivalent to 4.8 bolts, resulting in low connection reliability of the steel structure, short overhaul periods, and subsequent maintenance costs. The advanced problem cannot meet the requirements of “heavy load and speed increase” in freight transportation. In addition, the installation of hot rivets is labor-intensive, has a loud voice, and pollutes the environment. Therefore, it is urgent and necessary to adopt new fasteners in the key and key parts of the above-mentioned steel structure. [0003] The Chinese patent discloses a new type of fastener'pull rivet' (ZL200520035325X, Ref. 1), which solves the above problems a...

Claims

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Application Information

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IPC IPC(8): F16B19/04
Inventor 肖颖伏凯胡方年
Owner MEISHAN CRRC FASTENING SYST CO LTD
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