CN202611723U

CN202611723U - Hydraulic upright column

Info

Publication number: CN202611723U
Application number: CN 201220215703
Authority: CN
Inventors: 唐飞飞; 姚宝
Original assignee: HUAINAN TANGXING HYDRAULIC MACHINERY CO Ltd
Current assignee: HUAINAN TANGXING HYDRAULIC MACHINERY CO Ltd
Priority date: 2012-05-14
Filing date: 2012-05-14
Publication date: 2012-12-19
Anticipated expiration: 2022-05-14

Abstract

The utility model discloses a hydraulic upright column and relates to the technical field of hydraulics. A secondary cylinder body (11) is arranged in a cylinder body (1), a first piston seal element (7) is arranged at the left end of the secondary cylinder body (11), a second piston seal element (9) and a second guide ring (10) are disposed at the left end of a movable column (12), a dust ring (24) is disposed on the left side of a first check ring (23), a second guide sleeve (15) is mounted at the right end of the movable column (12), a second retaining sleeve (29) is disposed at the right end of the second guide sleeve (15), a third guide ring (16), a second static seal element (18) and a second rod seal element (28) are arranged on the second guide sleeve (15), a second check ring (27) is mounted at the right end of the second retaining sleeve (29), and a dust ring (30) is mounted on the left side of the second check ring (27). The hydraulic upright column has the advantages that a double telescopic structure is utilized, the height adjustment range is wide, the usage is convenient, and the sealing is good.

Description

A kind of hydraulic vertical prop

Technical field:

The utility model relates to the hydraulic technique field, is specifically related to a kind of hydraulic vertical prop.

Background technology:

Column is the groundwork mechanism of comprehensive mining hydraulic bracket, is used to make comprehensive mining hydraulic bracket to bear top board load, regulates support height.It is little that the hydraulic vertical prop that uses is at present heightened scope, uses inconvenience, the poor sealing of seal.

The utility model content:

The purpose of the utility model provides a kind of hydraulic vertical prop, and it adopts two stretching structure forms, and it is big to heighten scope, easy to use, and good airproof performance.

In order to solve the existing problem of background technology, the utility model is to adopt following technical scheme: it comprises cylinder body 1, screw 2, packing ring 3, retainer ring 4, lesser calorie ring 5, bottom valve 6, first piston seal 7, first guide ring 8, second piston seal 9, second guide ring 10, secondary cylinder body 11, the post 12 of living, first fairlead 13, first static seal 14, second fairlead 15, the 3rd guide ring 16, the 4th guide ring 17, second static seal 18, first shaft seal 19, first snap ring 20, first round section joint ring 21, first interstage sleeve 22, first back-up ring 23, dust ring 24, second snap ring 25, second round section joint ring 26, second back-up ring 27, second shaft seal 28, second interstage sleeve 29 and dust ring 30; Bottom valve 6 is arranged on the left end of the inside of cylinder body 1; And the left end of bottom valve 6 is fixed through screw 2, packing ring 3, retainer ring 4, lesser calorie ring 5; Secondary cylinder body 11 is arranged on the inside of cylinder body 1; And the left end of secondary cylinder body 11 is provided with first piston seal 7, first guide ring 8, and the post 12 of living is arranged on the inside of secondary cylinder body 11, and the left end of the post 12 of living is provided with second piston seal 9, second guide ring 10.

The right-hand member of described secondary cylinder body 11 is provided with first fairlead 13; First interstage sleeve 22 is arranged on the right-hand member of first fairlead 13; First static seal 14, the 4th guide ring 17, first shaft seal 19 from left to right are successively set on first fairlead 13; First snap ring 20, first round section joint ring 21 are arranged between first interstage sleeve 22 and first fairlead 13, and first back-up ring 23 is arranged on the right-hand member of first interstage sleeve 22, and dust ring 24 is arranged on the left side of first back-up ring 23; The right-hand member of post 12 alive is provided with second fairlead 15; Second interstage sleeve 29 is arranged on the right-hand member of second fairlead 15, and the 3rd guide ring 16, second static seal 18, second shaft seal 28 are arranged on second fairlead 15, and second snap ring 25, second round section joint ring 26 are arranged between second fairlead 15 and second interstage sleeve 29; Second back-up ring 27 is arranged on the right-hand member of second interstage sleeve 29, and dust ring 30 is arranged on the left side of second back-up ring 27.

The utlity model has following beneficial effect: it adopts two stretching structure forms, and it is big to heighten scope, easy to use, and good airproof performance.

Description of drawings:

Fig. 1 is the structural representation of the utility model,

Fig. 2 is the C-C sectional view of Fig. 1,

Fig. 3 is the utility model setting prop principle schematic,

Fig. 4 falls the post principle schematic for the utility model.

The specific embodiment:

Referring to Fig. 1-2, this specific embodiment adopts following technical scheme: it comprises cylinder body 1, screw 2, packing ring 3, retainer ring 4, lesser calorie ring 5, bottom valve 6, first piston seal 7, first guide ring 8, second piston seal 9, second guide ring 10, secondary cylinder body 11, the post 12 of living, first fairlead 13, first static seal 14, second fairlead 15, the 3rd guide ring 16, the 4th guide ring 17, second static seal 18, first shaft seal 19, first snap ring 20, first round section joint ring 21, first interstage sleeve 22, first back-up ring 23, dust ring 24, second snap ring 25, second round section joint ring 26, second back-up ring 27, second shaft seal 28, second interstage sleeve 29 and dust ring 30; Bottom valve 6 is arranged on the left end of the inside of cylinder body 1; And the left end of bottom valve 6 is fixed through screw 2, packing ring 3, retainer ring 4, lesser calorie ring 5; Secondary cylinder body 11 is arranged on the inside of cylinder body 1; And the left end of secondary cylinder body 11 is provided with first piston seal 7, first guide ring 8, and the post 12 of living is arranged on the inside of secondary cylinder body 11, and the left end of the post 12 of living is provided with second piston seal 9, second guide ring 10.

The operating principle of this specific embodiment is: referring to Fig. 3, during setting prop, when control valve is pulled the setting prop position; The pressure liquid that is come by interior control valve rises secondary cylinder from union A entering first-stage cylinder chamber; Pressure raises and reaches bottom valve opening pressure entering column piston alive chamber, and post alive is risen, and contacts with top board until back timber; At this moment, the setting load of column is taken advantage of the hydraulic coupling piston area; Back timber is with after top board contacts, and roof pressure passes to post alive through back timber.Because the control valve that comprises one way valve and safety valve is housed on the feed liquor pipeline, the pressure liquid in the column piston chamber of living is by unidirectional valve seal, thereby the pressure of pressure liquid raises along with the rising of roof pressure.When pressure surpassed the operating pressure of column, when promptly surpassing the rated operating pressure of safety valve, safety valve began unloading, and the post of living shrinks.When pressure drop to be lower than the safety valve yield load 90% the time, safety valve cuts out, column begins again to carry.When back timber and top board throw off contact before, the transmission of pressure and the action of safety valve are always carried out so repeatedly; When falling post, referring to Fig. 4, when falling the post position, the pressure liquid that is come by control valve is through union and get into the rod end chamber of post outside of living, and opens hydraulic control one-way valve, and the liquid of upright plunger cavity is communicated with the liquid back pipe road through control valve with the control valve handle wrench.At this moment, the post of living descends rapidly under hydraulic pressure and deadweight effect.

This specific embodiment adopts two stretching structure forms, and it is big to heighten scope, easy to use, and good airproof performance.

Claims

1. hydraulic vertical prop, it comprises cylinder body (1), screw (2), packing ring (3), retainer ring (4), little snap ring (5), bottom valve (6), first piston seal (7), first guide ring (8), second piston seal (9), second guide ring (10), secondary cylinder body (11), live post (12), first fairlead (13), first static seal (14), second fairlead (15), the 3rd guide ring (16), the 4th guide ring (17), second static seal (18), first shaft seal (19), first snap ring (20), first round section joint ring (21), first interstage sleeve (22), first back-up ring (23), dust ring (24), second snap ring (25), second round section joint ring (26), second back-up ring (27), second shaft seal (28), second interstage sleeve (29) and dust ring (30); It is characterized in that: bottom valve (6) is arranged on the left end of the inside of cylinder body (1); And the left end of bottom valve (6) is fixed through screw (2), packing ring (3), retainer ring (4), little snap ring (5); Secondary cylinder body (11) is arranged on the inside of cylinder body (1); And the left end of secondary cylinder body (11) is provided with first piston seal (7), first guide ring (8), and the post (12) of living is arranged on the inside of secondary cylinder body (11), and the left end of the post (12) of living is provided with second piston seal (9), second guide ring (10).

2. a kind of hydraulic vertical prop according to claim 1; The right-hand member that it is characterized in that described secondary cylinder body (11) is provided with first fairlead (13); First interstage sleeve (22) is arranged on the right-hand member of first fairlead (13); First static seal (14), the 4th guide ring (17), first shaft seal (19) from left to right are successively set on first fairlead (13); First snap ring (20), first round section joint ring (21) are arranged between first interstage sleeve (22) and first fairlead (13), and first back-up ring (23) is arranged on the right-hand member of first interstage sleeve (22), and dust ring (24) is arranged on the left side of first back-up ring (23); The right-hand member of post alive (12) is provided with second fairlead (15); Second interstage sleeve (29) is arranged on the right-hand member of second fairlead (15), and the 3rd guide ring (16), second static seal (18), second shaft seal (28) are arranged on second fairlead (15), and second snap ring (25), second round section joint ring (26) are arranged between second fairlead (15) and second interstage sleeve (29); Second back-up ring (27) is arranged on the right-hand member of second interstage sleeve (29), and dust ring (30) is arranged on the left side of second back-up ring (27).