CN215634117U

CN215634117U - Piston rod sealing structure

Info

Publication number: CN215634117U
Application number: CN202122219327.6U
Authority: CN
Inventors: 方涛
Original assignee: Jiaxing Hongmin Machinery Co ltd
Current assignee: Jiaxing Hongmin Machinery Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-01-25
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a piston rod sealing structure which comprises an outer half pipe A and an outer half pipe B, and further comprises an elastic supporting assembly, a C-shaped sealing ring A and a C-shaped sealing ring B, wherein the inner side wall of the outer half pipe A is fixedly connected with an assembling block A, the inner side wall of the outer half pipe B is fixedly connected with an assembling block B, bolts penetrate through the assembling block A and the assembling block B, nuts are connected to the tail ends of the bolts in a threaded manner, the elastic supporting assembly comprises a supporting seat, a supporting rod, a spring, a limiting block, a limiting groove and an arc-shaped pressing block, and the supporting seat is embedded and connected to the inner side walls of the outer half pipe A and the outer half pipe B. This supporting seat inlays to be connected in overcoat half pipe A and overcoat half pipe B inboard among piston rod seal structure, and the spring receives spring extrusion effect, and the spring bounce-back produces the rebound effect to the bracing piece, and the arc briquetting has a plurality ofly, and the briquetting extrudees C type sealing washer A and C type sealing washer B.

Description

Piston rod sealing structure

Technical Field

The utility model relates to the technical field of piston rod sealing, in particular to a piston rod sealing structure.

Background

The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing component, and the piston rod is a movement component with frequent movement and high technical requirements. Taking a hydraulic oil cylinder as an example, the hydraulic oil cylinder comprises: the cylinder barrel, the piston rod, the piston and the end cover. The quality of the processing quality directly influences the service life and the reliability of the whole product. The piston rod has high processing requirement, the surface roughness requirement of the piston rod is Ra0.4-0.8 mu m, and the requirements on coaxiality and wear resistance are strict. The oil cylinder rod is basically characterized in that a slender shaft is machined, and the machining difficulty is high, so that the oil cylinder rod always troubles machining personnel.

Patent number CN201811020354.7 discloses a rubber seal structure for loom piston rod, including the piston cylinder, piston cylinder inner wall one side is equipped with the rubber mounting groove, is equipped with rubber seal in the rubber mounting groove, and piston cylinder one end is equipped with the installation face, is equipped with the rectangle step that is located on the piston cylinder inner wall between rubber mounting groove and the installation face, is equipped with split type clamp ring on the rectangle step, the outer wall of clamp ring laminates with the inner wall of rectangle step each other, and clamp ring one end is equipped with the fixed plate that is located the installation face outside, through a plurality of screw connection installation faces on the fixed plate, and fixed plate one side is connected with adjusting screw through the screw hole, adjusts the screw tip and laminates with the installation face each other, and the clamp ring other end is equipped with the clamp plate that is located the rubber mounting groove. The utility model can effectively prevent the seal ring from rolling or falling off when the piston rod works.

At present, the sealing structure for the piston rod has the following disadvantages: 1. in the past, the sealing structure for the piston rod mostly directly adopts an O-shaped sealing ring for sealing, and the sealing structure can be loosened after a long time, so that the sealing performance is reduced; 2. the sealing structure used for the piston rod in the prior art is inconvenient to assemble and disassemble and has insufficient flexibility in use. To this end, we propose a piston rod seal structure.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a piston rod sealing structure, wherein a supporting seat is embedded and connected to the inner sides of an outer sleeve half pipe A and an outer sleeve half pipe B, a spring is extruded by the spring, the spring rebounds to rebound a supporting rod, a limiting block slides along a limiting groove inner track in a matched mode in the process that the supporting rod slides along an inner groove of the supporting seat in a telescopic mode to limit the movement of the supporting rod, a plurality of arc-shaped pressing blocks are arranged, the pressing blocks extrude a C-shaped sealing ring A and a C-shaped sealing ring B, and the problems in the background technology can be effectively solved.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a piston rod seal structure, includes overcoat half pipe A and overcoat half pipe B, still includes elastic support subassembly, C type sealing washer A and C type sealing washer B, overcoat half pipe A inside wall fixedly connected with equipment piece A, overcoat half pipe B inside wall fixedly connected with equipment piece B, it has the bolt to run through on equipment piece A and the equipment piece B, bolt end screw thread is connected with the nut, the elastic support subassembly includes supporting seat, bracing piece, spring, stopper, spacing groove and arc briquetting, overcoat half pipe A and overcoat half pipe B inside wall are inlayed and are connected with the supporting seat.

Furthermore, a support rod is inserted into the support seat, and a spring is arranged between the support seat and the support rod; the spring is extruded by the spring, and the spring rebounds to rebound the support rod.

Furthermore, limiting blocks are fixedly connected to two sides of the supporting rod, limiting grooves are formed in the inner walls of two sides of the supporting seat, and the limiting blocks slide along the inner parts of the limiting grooves in a matched mode; in the process that the supporting rod slides along the supporting seat inner groove in a telescopic mode, the limiting block slides along the limiting groove inner rail in a matched mode, and the movement of the supporting rod is limited.

Furthermore, the tail end of the supporting rod is fixedly connected with an arc-shaped pressing block, and the outer surfaces of the C-shaped sealing ring A and the C-shaped sealing ring B are both bonded with the arc-shaped pressing blocks; the arc-shaped pressing blocks are multiple and extrude the C-shaped sealing ring A and the C-shaped sealing ring B through the pressing blocks.

Furthermore, cushion blocks are fixedly connected to the inner side walls of the outer sleeve half pipe A and the outer sleeve half pipe B; the cushion blocks on the inner side walls of the outer sleeve half pipe A and the outer sleeve half pipe B play a role in cushion connection of the C-shaped seal ring A and the C-shaped seal ring B.

Compared with the prior art, the utility model has the following beneficial effects that 1, through designing the elastic supporting assembly, the elastic supporting assembly comprises a supporting seat, a supporting rod, a spring, a limiting block, a plurality of limiting grooves and an arc-shaped pressing block, the supporting seat is embedded and connected to the inner sides of the outer half pipe A and the outer half pipe B, the spring is extruded by the spring, the spring rebounds to generate a rebounding effect on the supporting rod, the limiting block slides along the track in the limiting groove in a matched manner to limit the movement of the supporting rod in the telescopic sliding process of the supporting rod along the inner groove of the supporting seat, the arc-shaped pressing blocks are provided with a plurality of the limiting blocks to extrude the C-shaped sealing ring A and the C-shaped sealing ring B, and the cushion blocks on the inner side walls of the outer half pipe A and the outer half pipe B generate a cushion effect on the C-shaped sealing ring A and the C-shaped sealing ring B, so that the traditional sealing structure for the piston rod is mostly sealed by adopting O-shaped sealing rings directly, and can be loosened after too long time, The problem of reduced sealing performance is caused; 2. through at outer cover half pipe A inside wall fixedly connected with equipment piece A, outer cover half pipe B inside wall fixedly connected with equipment piece B, the equipment has bolt and nut on equipment piece A and the equipment piece B, use relevant instrument to loosen and unload the terminal nut of bolt, then take off the bolt, equipment piece A and equipment piece B natural segregation, the convenience is carried out dismouting to outer cover half pipe A and outer cover half pipe B, the seal structure that has been used for the piston rod in the past is not convenient for the dismouting, the not enough problem of flexibility during the use has been solved.

Drawings

Fig. 1 is a schematic view of the overall structure of a piston rod sealing structure according to the present invention.

Fig. 2 is a front structural schematic view of a piston rod sealing structure according to the present invention.

Fig. 3 is a schematic structural view of an elastic support assembly of a piston rod sealing structure according to the present invention.

In the figure: 1. sleeving a half pipe A; 2. sleeving a half pipe B; 3. assembling the block A; 4. assembling the block B; 5. a bolt; 6. a nut; 7. a C-shaped sealing ring A; 8. a C-shaped sealing ring B; 9. an elastic support member; 901. a supporting seat; 902. a support bar; 903. a spring; 904. a limiting block; 905. a limiting groove; 906. an arc-shaped pressing block; 10. and a cushion block.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-3, a piston rod sealing structure comprises an outer half pipe a1 and an outer half pipe B2, and further comprises an elastic support component 9, a C-shaped sealing ring a7 and a C-shaped sealing ring B8, wherein an assembly block A3 is fixedly connected to the inner side wall of the outer half pipe a1, an assembly block B4 is fixedly connected to the inner side wall of the outer half pipe B2, a bolt 5 is inserted through the assembly block A3 and the assembly block B4, a nut 6 is connected to the tail end of the bolt 5 through a thread, the elastic support component 9 comprises a support base 901, a support rod 902, a spring 903, a limit block 904, a limit groove 905 and an arc-shaped press block 906, and the inner side walls of the outer half pipe a1 and the outer half pipe B2 are connected to the support base 901 in an embedded manner.

The support base 901 is inserted with a support rod 902, and a spring 903 is arranged between the support base 901 and the support rod 902; the spring 903 is pressed by the spring 903, and the spring 903 rebounds to generate a rebounding effect on the supporting rod 902.

The two sides of the supporting rod 902 are fixedly connected with limit blocks 904, the inner walls of the two sides of the supporting seat 901 are provided with limit grooves 905, and the limit blocks 904 slide along the inner parts of the limit grooves 905 in a matching manner; in the process that the supporting rod 902 slides along the supporting seat 901, the limiting block 904 slides along the track in the limiting groove 905 in a matched manner, so that the movement of the supporting rod 902 is limited.

The tail end of the supporting rod 902 is fixedly connected with an arc-shaped pressing block 906, and the arc-shaped pressing block 906 is bonded on the outer surfaces of the C-shaped sealing ring A7 and the C-shaped sealing ring B8; the arc-shaped pressing pieces 906, which press the C-shaped seal ring a7 and the C-shaped seal ring B8, are provided in plural numbers.

Wherein, the inner side walls of the outer sleeve half pipe A1 and the outer sleeve half pipe B2 are fixedly connected with a cushion block 10; the cushion blocks 10 on the inner side walls of the outer sleeve half pipe A1 and the outer sleeve half pipe B2 play a role in cushion connection of the C-shaped sealing ring A7 and the C-shaped sealing ring B8.

It should be noted that the utility model is a piston rod sealing structure, when in use, the utility model designs an elastic supporting component 9, the elastic supporting component 9 comprises a supporting seat 901, a supporting rod 902, a spring 903, a limiting block 904, a limiting groove 905 and an arc-shaped press block 906, the supporting seat 901 is embedded and connected with the inner sides of an outer half tube A1 and an outer half tube B2, the spring 903 is extruded by the spring 903, the spring 903 rebounds to generate a rebounding effect on the supporting rod 902, in the process that the supporting rod 902 slides along the inner groove of the supporting seat 901 in a telescopic way, the limiting block 904 slides along the inner track of the limiting groove 905 in a matching way to limit the movement of the supporting rod 902, the arc-shaped press block 906 is provided with a plurality of press blocks, the press blocks extrude the C-shaped sealing ring A7 and the C-shaped sealing ring B8, and the cushion blocks 10 on the inner side walls of the outer half tube A1 and the outer half tube B2 generate a cushion connection effect on the C-shaped sealing ring A7 and the C-shaped sealing ring B8, thereby solving the problems that the existing sealing structure for sealing by adopting O-shaped sealing ring to seal directly, The problem of looseness and reduced sealing performance can be caused after the time is too long; through at overcoat half pipe A1 inside wall fixedly connected with equipment piece A3, overcoat half pipe B2 inside wall fixedly connected with equipment piece B4, the equipment has bolt 5 and nut 6 on equipment piece A3 and the equipment piece B4, use relevant instrument to loosen and unload the terminal nut 6 of bolt 5, then take off bolt 5, equipment piece A3 and equipment piece B4 natural separation, conveniently carry out the dismouting to overcoat half pipe A1 and overcoat half pipe B2, the problem that the seal structure that is used for the piston rod in the past is not convenient for the dismouting, the flexibility is not enough during the use has been solved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a piston rod seal structure, includes half pipe A (1) of overcoat and half pipe B (2) of overcoat, its characterized in that: still include elastic support subassembly (9), C type sealing washer A (7) and C type sealing washer B (8), outer half pipe A (1) inside wall fixedly connected with equipment piece A (3), outer half pipe B (2) inside wall fixedly connected with equipment piece B (4), it has bolt (5) to run through on equipment piece A (3) and the equipment piece B (4), bolt (5) terminal threaded connection has nut (6), elastic support subassembly (9) are including supporting seat (901), bracing piece (902), spring (903), stopper (904), spacing groove (905) and arc briquetting (906), outer half pipe A (1) and outer half pipe B (2) inside wall are inlayed and are connected with supporting seat (901).

2. A piston rod sealing structure according to claim 1, wherein: the supporting seat (901) is inserted with a supporting rod (902), and a spring (903) is arranged between the supporting seat (901) and the supporting rod (902).

3. A piston rod sealing structure according to claim 1, wherein: the supporting rod (902) is fixedly connected with limiting blocks (904) on two sides, limiting grooves (905) are formed in inner walls of two sides of the supporting seat (901), and the limiting blocks (904) slide along the inner portions of the limiting grooves (905) in a matched mode.

4. A piston rod sealing structure according to claim 1, wherein: the terminal fixedly connected with arc briquetting (906) of bracing piece (902), arc briquetting (906) have all been bonded to C type sealing washer A (7) and C type sealing washer B (8) surface.

5. A piston rod sealing structure according to claim 1, wherein: and the inner side walls of the outer sleeve half pipe A (1) and the outer sleeve half pipe B (2) are fixedly connected with cushion blocks (10).