Novel anti-loose structure of air cylinder
By introducing pretension tooling into the cylinder, the pretension force is generated by the movement of the pretension piston, the problem of loosening of the cylinder lock nut is solved and the structural stability is improved.
Patent Information
- Application Number
- CN202422451710.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The locking nuts of the cylinder of the large tonnage mechanical press are prone to loosening during the stamping process, resulting in unstable structure.
Pre-tightening tooling is adopted, including pre-tightening bolts, pre-tightening pistons, pre-tightening cylinder blocks, pre-tightening cylinder seats and pre-tightening levers, to generate pre-tightening force through the movement of the pre-tightening piston to prevent the locking nut from loosening.
Effectively prevent the locking nut from loosening and improve the stability of the cylinder structure.
Smart Images
Figure CN223227604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mechanical press, in particular to a novel anti-loosening structure of a cylinder. Background Art
[0002] Some large-tonnage mechanical presses are equipped with air cushions. During the use of the air cushion, the cylinder inside the press will be subjected to a strong impact load every time the press punches. This harsh working condition makes its locking nut easily loose, so a cylinder structure that can effectively prevent loosening is needed. Utility Model Content
[0003] The purpose of the utility model is to provide a novel anti-loosening structure of a cylinder to solve the problems in the prior art.
[0004] The technical solution of the utility model is: a new anti-loosening structure of a cylinder, which includes a cylinder and a pre-tightening tool.
[0005] The cylinder includes a piston rod, a locking nut, a support block, a limiting spacer, a pressure plate, a tightening bolt, a nut, an upper cylinder cover, a self-lubricating copper sleeve, a piston, an upper cylinder body, a spacer, a middle cylinder cover, a copper sleeve, a middle cylinder body, a lower cylinder body, and a lower cylinder bottom;
[0006] The pre-tightening tooling includes a pre-tightening bolt, a pre-tightening piston, a pre-tightening cylinder body, a pre-tightening cylinder seat, a pre-tightening lever, and an air cushion crown fixing plate;
[0007] One end of the pre-tightening bolt is connected to the piston rod, the pre-tightening cylinder seat is arranged on the air cushion top crown fixing plate, the pre-tightening cylinder body is arranged on the pre-tightening cylinder seat, the pre-tightening piston is connected to the other end of the pre-tightening bolt and is arranged in the pre-tightening cylinder body, the piston rod passes through the locking nut and the air cushion top crown fixing plate in sequence, the locking nut is arranged on the air cushion top crown fixing plate, one end of the pre-tightening lever is arranged in the locking nut, and the spacer is arranged outside the piston rod.
[0008] The beneficial effects of the utility model are that the locking nut is pre-tightened by the pre-tightening tooling, is not easy to loosen, and has good structural stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural diagram of the present utility model.
[0010] In the figure, 01 is the piston rod, 02 is the locking nut, 03 is the support block, 04 is the limit spacer, 05 is the pressure plate, 06 is the tightening bolt, 07 is the nut, 08 is the upper cylinder cover, 09 is the self-lubricating copper sleeve, 10 is the piston, 11 is the upper cylinder body, 12 is the spacer, 13 is the middle cylinder cover, 14 is the copper sleeve, 15 is the middle cylinder body, 16 is the lower cylinder body, 17 is the lower cylinder bottom, 18 is the pre-tightening bolt, 19 is the pre-tightening piston, 20 is the pre-tightening cylinder body, 21 is the pre-tightening cylinder seat, 22 is the pre-tightening lever, and 23 is the air cushion crown fixing plate. DETAILED DESCRIPTION
[0011] A novel anti-loosening structure for a cylinder, comprising a cylinder and a pre-tightening tooling.
[0012] The cylinder includes a piston rod 01, a locking nut 02, a support block 03, a limiting spacer 04, a pressure plate 05, a tightening bolt 06, a nut 07, an upper cylinder cover 08, a self-lubricating copper sleeve 09, a piston 10, an upper cylinder body 11, a spacer 12, a middle cylinder cover 13, a copper sleeve 14, a middle cylinder body 15, a lower cylinder body 16, and a lower cylinder bottom 17;
[0013] The pre-tightening tooling includes a pre-tightening bolt 18, a pre-tightening piston 19, a pre-tightening cylinder 20, a pre-tightening cylinder seat 21, a pre-tightening lever 22, and an air cushion crown fixing plate 23;
[0014] One end of the pre-tightening bolt 18 is connected to the piston rod 01, the pre-tightening cylinder seat 21 is arranged on the air cushion crown fixing plate 23, the pre-tightening cylinder body 20 is arranged on the pre-tightening cylinder seat 21, the pre-tightening piston 19 is connected to the other end of the pre-tightening bolt 18 and is arranged in the pre-tightening cylinder body 20, the piston rod 01 passes through the locking nut 02 and the air cushion crown fixing plate 23 in sequence, the locking nut 02 is arranged on the air cushion crown fixing plate 23, one end of the pre-tightening lever 22 is arranged in the locking nut 02, and the spacer 12 is arranged outside the piston rod 01.
[0015] The working principle of the utility model is as follows: first, the cylinder is installed into the air cushion crown and preliminarily tightened with the locking nut 02, then one end of the pre-tightening bolt 18 is screwed into the piston rod 01, and then the pre-tightening cylinder seat 21 and the pre-tightening cylinder body 20 are placed on the air cushion crown fixing plate 23 in sequence, and then the pre-tightening piston 19 is connected to the other end of the pre-tightening bolt 18 and installed into the pre-tightening cylinder body, and finally high-pressure oil is injected into the pre-tightening cylinder body 20. The movement of the pre-tightening piston 19 causes the piston rod 01 to be stretched and the spacer 12 to be compressed, thereby making the locking nut 02 and the air cushion crown tighten. A gap is generated between the top crown fixing plate 23. At this time, the locking nut 02 is rotated by the pre-tightening lever 22 to eliminate this gap. After the locking nut 02 is rotated into place, the oil pressure is released. At this time, the piston rod 01 is still in an extended state and the spacer 12 is still in a compressed state. The elastic deformation of the two produces a pre-tightening force, which makes the nut not easy to loosen. Finally, in order to prevent the pre-tightening force from disappearing with the passage of time, two M10 saddle screws are staggered 90° between the thread gap of the locking nut 02 and the piston rod 01 to provide secondary anti-loosening protection.
[0016] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0017] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.
[0018] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can all be customized according to the description and the drawings.
[0019] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A new anti-loosening structure for a cylinder, characterized by: The anti-loosening structure includes a cylinder and a pre-tightening tool. The cylinder comprises a piston rod (01), a locking nut (02), a support block (03), a limiting spacer (04), a pressure plate (05), a tensioning bolt (06), a nut (07), an upper cylinder cover (08), a self-lubricating copper sleeve (09), a piston (10), an upper cylinder body (11), a spacer (12), a middle cylinder cover (13), a copper sleeve (14), a middle cylinder body (15), a lower cylinder body (16), and a lower cylinder bottom (17); The pre-tightening tooling includes a pre-tightening bolt (18), a pre-tightening piston (19), a pre-tightening cylinder (20), a pre-tightening cylinder seat (21), a pre-tightening lever (22), and an air cushion crown fixing plate (23); One end of the pre-tightening bolt (18) is connected to the piston rod (01), the pre-tightening cylinder seat (21) is arranged on the air cushion crown fixing plate (23), the pre-tightening cylinder body (20) is arranged on the pre-tightening cylinder seat (21), the pre-tightening piston (19) is connected to the other end of the pre-tightening bolt (18) and is arranged in the pre-tightening cylinder body (20), the piston rod (01) passes through the locking nut (02) and the air cushion crown fixing plate (23) in sequence, the locking nut (02) is arranged on the air cushion crown fixing plate (23), one end of the pre-tightening lever (22) is arranged in the locking nut (02), and the spacer (12) is arranged outside the piston rod (01).