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Double-acting hydraulic riveter for short-tail rivet

A double-acting, riveting gun technology, applied in the field of riveting guns, double-acting short-tail rivet hydraulic riveting guns, can solve problems such as complex repair and maintenance, non-reusable, hidden dangers, etc., to reduce processing costs and improve products Yield, reliability and life improvement effects

Inactive Publication Date: 2012-10-24
SHANGDONG TONGLIDA INTELLIGENT MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous advancement of technology, railway wagons use a special rivet for railway wagons. This rivet is firmly connected, corrosion-resistant, easy to install, and has the characteristics of being fastened once and never loosening; but this type of rivet also has disadvantages. Features: 1) Cannot be reused; 2) Suitable for applications that do not need to be disassembled
[0006] Also in Chinese patent 200710049910.9, there is another rotary riveter, which uses the dual functions of oil cylinder and pneumatic to complete the riveting work. The structure of the riveter with this structure is extremely complicated, which contains a large number of parts. In the process of actual use There are many hidden dangers, and the repair and maintenance are also very complicated

Method used

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  • Double-acting hydraulic riveter for short-tail rivet
  • Double-acting hydraulic riveter for short-tail rivet

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The cylinder part is composed of a cylindrical cylinder body 21, a front body 22, an anvil cylinder seat 23 and an anvil cylinder 24, all of which are cylindrical bodies. Coaxial fixed connection, wherein the anvil cylinder 24 is threaded on the top of the anvil cylinder base 23, and the butt connection between the cylinder body 21 and the anvil cylinder base 23 is realized through the built-in precursor 22. The cylinder body 21 is a forging and is machined. An annular protrusion 211 is arranged inside the cylinder body 21. On the front and rear sides of the protrusion 211 are a front cavity 212 and a rear cavity 213. The front and rear cavities are built in An oil chamber can be formed behind the piston, and the cylinder body has a simple structure. The precursor 22 is an annular body, which is provided with the inner side of the connection between the cylinder and the anvil, and the outer side of the precursor 22 is provided with threads to realize the connection betw...

Embodiment 2

[0039] Such as figure 2 As shown, the main structure of the structure in this embodiment is basically the same as in Embodiment 1, the difference is that the front piston body 11 is inserted in the rear piston body 12, and the front piston body passes through the rear piston body and extends to the rear piston body outside. The external interface 41' of the first oil passage is set at the rear tail of the front piston body 11, and the first oil passage directly penetrates the first oil chamber and the second oil chamber, which is a modification of the first oil passage in the first embodiment .

[0040] Similarly, the external port 42' of the second oil passage is arranged at the rear tail of the front piston body, and the second oil passage directly penetrates into the third oil chamber. The layout of this oil circuit is relatively simple and has high application value.

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Abstract

The invention relates to a double-acting hydraulic riveter for a short-tail rivet. The hydraulic riveter for the short-tail rivet is a riveting molding tool special for the short-tail rivet and comprises a front piston body, a rear piston body, a cylinder body, an anvil barrel, an anvil barrel seat, an inner barrel clamp and a front body, wherein the inner barrel clamp is connected with an outer thread at one end of the front piston body through an inner thread, and the other end of the front piston body is connected with an inner thread of the rear piston body through the outer thread and provided with a positioning boss to guarantee the axiality of the front piston body and the rear piston body; the cylinder body and the anvil barrel seat are connected with outer threads of the front body respectively, the front body, the front piston body and the cylinder body form a first oil chamber, and the front piston body, the rear piston body and the cylinder body form a second oil chamber; and aluminum alloy dustproof rings are arranged at positions of the front body and the rear piston body. The weight of the double-acting short-tail riveter is reduced by 1 / 4 of that of a traditional gun-type riveter, the processing is simple, the number of parts is small, the safety coefficient is high, the rejection rate of a critical component of an oil cylinder is low, the service life of products is effectively prolonged, and by means of a straight barrel type structure, the double-acting hydraulic riveter can be used on occasions which are limited in space.

Description

technical field [0001] The invention relates to a hydraulic riveting tool, in particular to a double-action short-tail rivet hydraulic riveting gun, especially a riveting gun suitable for short-tail rivets with a nominal diameter range of Φ12-Φ22mm. Background technique [0002] For a long time, ordinary rivets and bolts, such as hot riveted fasteners, have been widely used in railway vehicles and bridges, which have the following disadvantages: 1) hot riveting requires heating, complicated process and high labor intensity; 2) low efficiency of hot riveting; 3) The quality of riveting is uneven; 4) It is easy to loosen under the impact of long-term alternating loads, resulting in short maintenance periods and high maintenance costs. [0003] With the continuous advancement of technology, railway wagons use a special rivet for railway wagons. This rivet is firmly connected, corrosion-resistant, easy to install, and has the characteristics of being fastened once and never loos...

Claims

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Application Information

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IPC IPC(8): B21J15/38
Inventor 宁方楷赵杰周勇汉
Owner SHANGDONG TONGLIDA INTELLIGENT MACHINERY
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