CN2040142U - Single-body hydraulic support - Google Patents
Single-body hydraulic support Download PDFInfo
- Publication number
- CN2040142U CN2040142U CN 88209997 CN88209997U CN2040142U CN 2040142 U CN2040142 U CN 2040142U CN 88209997 CN88209997 CN 88209997 CN 88209997 U CN88209997 U CN 88209997U CN 2040142 U CN2040142 U CN 2040142U
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- China
- Prior art keywords
- plunger
- hydraulic prop
- cylinder sleeve
- sealing
- ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a novel device which uses a sealed bladder to replace the existing high pressure dynamic seal ring and which is suitable for facilities which are used for hoisting, jacking, supporting, etc and is especially suitable for underground single hydraulic props. The novel single hydraulic prop changes the seal ring of the existing single hydraulic prop into a sealed bladder, overcoming the defect that the existing single hydraulic prop is easy to leak. The utility model which is applicable to the blast-winning technology has the advantages of high capability, high safety, long service life, and low cost. The technical proposal of the utility model can restore the existing discarded single hydraulic prop caused by that the chrome plated surface of the prop piston falls off, is scratched, or is damaged or even by the blast of the field.
Description
The utility model relates to that a kind of good seal performance, supporting capacity are big, the lifting and the bracing or strutting arrangement of long service life.Be mainly used in crane gear and other jack-up structure, be specially adapted to the support column of mine.
With the hydraulic prop is example, and down-hole coal excavation supports Peng Ding than with wooden prop and friction pillar significant superiority being arranged with hydraulic prop.Therefore, hydraulic prop is applied gradually.Present existing hydraulic prop, though each tool difference, but its basic structure all as shown in Figure 2, because the high-pressure emulsification liquid that injects from three way cock (3) is by dynamic seal (25), (27) and static sealing circle (26), (28) sealing function just can force plunger mat (29) with plunger (24) and column cap (1) jack-up, realize the purpose of support, so there is following shortcoming: 1. every and sealing ring (25), (26), (27), (28) contact surface, all demanding machining accuracy and low surface roughness, in order to guarantee operate as normal in the adverse circumstances of down-hole, also need these chrome-faceds; Because between sealing ring (25) and the plunger (24) and the friction between sealing ring (27) and the cylinder sleeve (9) very big, so when unloading, lean on the deadweight of cylinder still can not reset, back-moving spring (5) need be set also; 3. owing to limit by the sealability of sealing ring, under or the condition that supporting time is long too big, will reveal in base (14) and the contact position of cylinder sleeve (9) and the contact position of handgrip body (23) and plunger (24) at hydraulic pressure; Though 4. because the leakage aging or that wearing and tearing cause of sealing ring can be changed sealing ring, when the jack-up plunger after, the local shedding of its exposed surface chromium coating or by scratch, the leakage of damaging and being caused, just difficult reparation, even scrap.Therefore, be unsuitable for quick-fried adopting fully.For above-mentioned reasons, so the manufacturing cost height of existing hydraulic prop, supporting capacity is low, and range of application is narrow, maintenance rate height, scrappage height.People are in order to overcome the above problems at present.All, improve the shape and the material of sealing ring and set about from changing the sealing position, though the supporting capacity that can improve hydraulic prop so to a certain extent with increase the service life, can not tackle the problem at its root.
The purpose of this utility model is big, the long service life of a kind of supporting capacity of design, and requirement on machining accuracy is low, and can be used for the quick-fried hydraulic prop of adopting.
Above-mentioned task of the present utility model is finished by the following technical programs: its overall structure and existing hydraulic prop are basic identical.A kind of be used for lifting, jack-up, support promptly are provided, hydraulic prop especially for the mine lower support, mainly form, it is characterized in that in plunger (8) and the formed cavity of cylinder sleeve (9), sealed bladder (10) being housed by column cap, three way cock, plunger, handgrip body, reinforcing sleeve, cylinder sleeve, base.
Except that above-mentioned feature, further feature is:
1. column cap (1) is welded into one respectively with plunger (13) with cylinder sleeve (9) and base (14), and this can eliminate static leakage, and can increase the strength and stiffness of pillar;
2. reinforcing sleeve (12) is located at the lower end of cylinder sleeve (9), helps dustproof and dedusting.Elasticity O type ring (21) and anti-extrusion ring (20) are housed in the groove of reinforcing sleeve (12), because being compressed distortion, O type ring (21) can make the anti-extrusion ring (20) and the inwall of cylinder sleeve (9) produce adjustable interference fit, this has just improved the stability of pillar, and to preventing dust compensating action is arranged;
3. on base (14), be provided with step-like through hole, this is after base and plunger and column cap and cylinder sleeve are welded into one respectively, the lower end of not only available extension spring nail (16) fixed reset spring (5), and, compress the sealing that can reach good with clamp nut (18) by the labyrinth sealing between ladder platform and the extension spring nail.
In order to be described in detail this programme, in conjunction with the accompanying drawings 1, be described below: column cap (1) and cylinder sleeve (9) are welded into one, it directly with contacted by jack-up thing or supported object, its planform is by being decided by the shape of jack-up thing or supported object.Inner chamber car at cylinder sleeve (9) has boss, and at platform got on the bus groove and screw thread, it mainly acts on is dress sealed bladder (10) and bearing part pressure.Handgrip body (22) is welded on the cylinder sleeve (9).Plunger (13) is welded into one with base (14), in the upper end of plunger (8) same boss is arranged.Sealed bladder (10) is to compress respectively on the boss that is sealed in column cap (8) and cylinder sleeve (9), so form annular seal space between plunger and cylinder sleeve by wedge gasket ring, clamp nut.Be provided with reinforcing sleeve (12) in the lower end of cylinder sleeve (9), dust ring (19) is housed on reinforcing sleeve (12), anti-extrusion ring (20) and elasticity O type ring (21) mainly have been dustproof and to the stabilization of pillar.Be provided with stair-stepping through hole on base (14), not only after base (14) and plunger (13) were welded into one, available extension spring was followed closely the lower end of (15) fixed reset spring (5) for this.Owing to be processed with mazy groove on the contact surface of shoulder hole and extension spring nail, realize sealing with rubber gasket (15) and clamp nut (18).Three way cock (3) is housed on column cap (1), and the effect of three way cock mainly is that one way valve injects highly pressurised liquid, and safety valve plays safety effect, and tapping valve plays the unloading effect.According to different requirements, the used material of sealed bladder can be a gentle flexible high pressure resistant material such as rubber, nylon, plastics.
Overall structure of the present utility model and existing hydraulic prop structure are basic identical, and its crucial technical characterictic is to adopt the sealed bladder sealing to replace sealing ring sealing used in the prior art.Because can keeping apart fully with the slipper of plunger, cylinder sleeve, sealed bladder realizes good sealing function.Therefore, this key technology that the utility model proposed has not only solved the leakage problem that the sealing of available technology adopting sealing ring often occurs fully, can also reduce requirement greatly to plunger and cylinder sleeve machining accuracy, prolong dwell time and application life, particularly the plunger surface of hydraulic prop is collapsed wound or is damaged, can not influence its sealing yet, therefore it is big to have supporting capacity, long service life, machining accuracy is low, safe and reliable, reduce manufacturing cost, and can be used for quick-fried advantage such as adopt.
Description of drawings:
Fig. 1 is the structural representation of novel monomeric hydraulic prop;
Fig. 2 is existing hydraulic prop structural representation.
(1) is column cap among the figure, and (2) are resilient key, and (3) are three way cock, (4) collude for last extension spring, (5) are back-moving spring, and (6) are clamp nut, (7) be the wedge gasket ring, (8) be upper plug, (9) are cylinder sleeve, and (10) are sealed bladder, (11) be anti-extrusion ring, (12) be reinforcing sleeve, (13) are lower plunger, and (14) are base, (15) be sealing mat, (16) follow closely for hanging spring, (17) alignment pin, (18) are clamp nut, (19) be dust ring, (20) be anti-extrusion ring, (21) are the elasticity force transmission ring, (23) spring arch clasp.
Technical solutions of the utility model can be implemented by following embodiment.Accompanying drawing 1 is an embodiment in the novel monomeric hydraulic prop scheme.It is made with assembling process: column cap (1), resilient key (2) and three way cock (3) are identical with existing monomer hydraulic pressure seat post.But the column cap (1) of new t shore is welded into one respectively with base (14) with cylinder sleeve (9) and plunger (13), sealed bladder (10) is housed in the cavity of plunger and cylinder sleeve, be provided with reinforcing sleeve (12) in the lower end of cylinder sleeve (9), anti-extrusion ring (20) and dust ring (19) are contained on the reinforcing sleeve, and on base (14) sealable extension spring arrangement are housed.This has just realized good static sealing and dynamic seal (packing).Its linkage editor is: earlier power transmission O type elastic ring (21), anti-extrusion ring (20) and dust ring (19) are contained on the reinforcing sleeve (12) on the one hand, again it is inserted on the plunger (13), sealed bladder (10) is enclosed within on the plunger (8) thereupon, and the groove that makes sealing ring snaps in the groove on the plunger boss, be inserted in wedge gasket ring (7) again, screw clamp nut (6).Identical with last method on the other hand the sealed bladder lower end is pressed on the boss of cylinder sleeve (9), again cylinder sleeve is enclosed within on the plunger (13), and make plunger (8) and plunger (13) screwing hermetic be bonded into one, load onto spring arch clasp (22).At last back-moving spring (5) is pulled out by the through hole of base, it is hung on the extension spring nail (16) that has put sealing mat (15) in advance, in the shoulder hole of the base of packing into, plug alignment pin (17), screw clamp nut (18) and get final product.
The selection of each component of the present utility model is widely, considers not only economy but also can guarantee its performance, and can select following material: plunger, cylinder sleeve, stop collar can be selected A for use
3Seamless steel pipe, spacing collar, handgrip body can be selected A for use
3, snap ring selects 65M for use
n, plunger mat, base 45# steel, anti-extrusion ring can be selected 45# for use with polyformaldehyde or polychlorostyrene PVF, nut, and topping up medium and high pressure liquid source are with of the prior art identical.
The technical solution of the utility model also can place sealed bladder the top of plunger except that above-mentioned embodiment, three way cock is placed the bottom of plunger, and promptly hyperphoric installation can reach above-mentioned effect equally.Certainly implement also more than above two kinds of this programme.
Claims (4)
1, a kind ofly is used for lifting, jack-up, support,, mainly forms by column cap, three way cock, plunger, cylinder sleeve, handgrip body, base, back-moving spring especially for the hydraulic prop of mine lower support.It is characterized in that in the cavity of plunger (8) and cylinder sleeve (9) sealed bladder (10) being housed, two body structures are adopted in plunger (8) and (13), and thread connection.Column cap (1) is welded into one respectively with base (14) with cylinder sleeve (9) and plunger (13).Reinforcing sleeve (12) places the lower end of cylinder sleeve (9).Base (14) is provided with ladder hole, is equipped with in the hole to hang spring nail (16).
2, hydraulic prop according to claim 1, it is characterized in that on plunger (8) and cylinder sleeve (9), being provided with boss, and, can compress sealing to sealed bladder by wedge gasket ring (7) and clamp nut (6) at boss got on the bus mazy seal groove and screw thread.
3, hydraulic prop according to claim 1 is characterized in that being equipped with on the reinforcing sleeve elasticity O type force transmission ring (21) and anti-extrusion ring (20).
4, hydraulic prop according to claim 1, it is characterized in that hanging the lower end of spring nail (16) fixed reset spring (5), contact surface at through hole step, sealing mat (15) and extension spring nail (16) has mazy sealed groove, and realizes compressing sealing by alignment pin (17) and clamp nut (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209997 CN2040142U (en) | 1988-08-23 | 1988-08-23 | Single-body hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209997 CN2040142U (en) | 1988-08-23 | 1988-08-23 | Single-body hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2040142U true CN2040142U (en) | 1989-06-28 |
Family
ID=4843535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88209997 Expired - Lifetime CN2040142U (en) | 1988-08-23 | 1988-08-23 | Single-body hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2040142U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390906A (en) * | 2014-11-24 | 2015-03-04 | 中国水利水电科学研究院 | Sealing device for corrosion test on steel strand |
| CN105298519A (en) * | 2015-11-26 | 2016-02-03 | 山东瀚业机械有限公司 | Crank fixed large-stroke internal injection type single hydraulic prop |
-
1988
- 1988-08-23 CN CN 88209997 patent/CN2040142U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390906A (en) * | 2014-11-24 | 2015-03-04 | 中国水利水电科学研究院 | Sealing device for corrosion test on steel strand |
| CN105298519A (en) * | 2015-11-26 | 2016-02-03 | 山东瀚业机械有限公司 | Crank fixed large-stroke internal injection type single hydraulic prop |
| CN105298519B (en) * | 2015-11-26 | 2017-06-13 | 山东瀚业机械有限公司 | A kind of crank fixes big stroke internal-injection type hydraulic prop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |