CN101046149A - Single hydraulic prop - Google Patents
Single hydraulic prop Download PDFInfo
- Publication number
- CN101046149A CN101046149A CN 200610154550 CN200610154550A CN101046149A CN 101046149 A CN101046149 A CN 101046149A CN 200610154550 CN200610154550 CN 200610154550 CN 200610154550 A CN200610154550 A CN 200610154550A CN 101046149 A CN101046149 A CN 101046149A
- Authority
- CN
- China
- Prior art keywords
- tube
- fluid
- communicates
- valve
- port
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The externally injected single hydraulic prop includes a top cover, a piston, an oil cylinder, a liquid pipe and a three-purpose valve constituting one variable volume sealed cavity; as well as a guide sleeve, a valve handle, a pedestal, a reset spring, etc. The liquid pipe has one end communicated to the three-purpose valve and the other end communicated to the sealed cavity; and the guide sleeve may be integrated with the valve handle. The present invention has altered work medium passage to the sealed cavity and raised sealing performance of the sealed cavity. In addition, the present invention has optional operation height.
Description
Technical field
The present invention relates to a kind of mining support apparatus, especially belong to a kind of outside injection type hydraulic pillar.
Background technology
The coal-face support apparatus is one of mine excavation imperative equipment.At present, support apparatus mainly contains types such as wooden prop, metal friction pillar, hydraulic prop, hydraulic support, and outside injection type hydraulic pillar is a kind of in the hydraulic prop.China Patent No. 971070636 is disclosed to be exactly a kind of in this class outside injection type hydraulic pillar, its structure comprises top cover, the post of living, dress valve handgrip, oil cylinder, base, back-moving spring, triple-use valve and guide ring and seal etc., and its operating principle is to utilize the seal chamber of a variable-volume to make under the effect of working media that post alive is flexible up and down to carry out work.Seal chamber is surrounded by top cover inwall, dress valve handgrip, the column outer wall of living, oil cylinder inner wall, base, triple-use valve.During operation, the working media that arrives from the pumping plant conveying, by triple-use valve fluid injection in the pillar seal chamber, working media enters the annular housing of column outer wall alive and oil cylinder inner wall formation through dress valve handgrip radial direction through hole, radial direction through hole from the post lower end of living enters the pillar annular seal space again, and like this along with the injection as working media, it is big that seal chamber becomes, the post of living rises the shore supports top board; When post fell in pillar, working media oppositely released, and seal chamber diminishes, and the post of living reduces, the pillar withdrawal.The every injection of working media and releasing once, pillar be setting prop and fall post once just, finishes a working cycles.
The problem that this outside injection type hydraulic pillar exists in actual applications is: the part of column outer wall as variable seal chamber of will living, for the turnover of pillar working media, realize setting prop and fall the post circulation of finishing the work, post is to need flexible parts owing to live, can be subjected to the direct influence of some unfavorable factors in the working environment after its outer wall is exposed inevitably, for example: burn into collision etc., thus cause the sealing performance of seal chamber to descend, and reduce pillar application life.
Summary of the invention
Reduce the sealing performance of seal chamber for factor affecting such as the column outer wall corrosion-vulnerable alive that overcomes the prior art B-C post, collisions, and reduce the pillar defective in application life, the present invention aims to provide a kind of outside injection type hydraulic pillar with new structure, pillar seal chamber after the improvement can not be subjected to because of the column outer wall of living to reduce sealing performance after the factor affecting such as burn into collision, prolongs greatly application life; Simultaneously, for the rising with the post of living of the position that overcomes working media access way in the prior art raises, make troubles to operation, even can't operate, the present invention has changed the position of working media access way, its position is fixed with respect to oil cylinder, so this passage can not change its height because of the lifting of the post of living, thus handled easily.
For achieving the above object, the present invention has adopted following technical scheme: the structure of this hydraulic prop comprises top cover, post alive, oil cylinder, triple-use valve and seal; Top cover inwall, oil cylinder inner wall, triple-use valve are respectively the part that seal chamber is used in the work that constitutes variable volume, it is characterized in that: stand alone type is provided with a fluid-through tube in the oil cylinder outside, a port of this fluid-through tube communicates with triple-use valve, and another port communicates with the pillar annular seal space.
During concrete enforcement, triple-use valve is fixed in the radial direction through hole of dress valve handgrip, also be provided with an axially extending bore on the dress valve handgrip body, a port of this axially extending bore communicates with triple-use valve, another port connects with a port sealing of fluid-through tube, the fluid-through tube another port communicates with a radial direction through hole on the base, and this radial direction through hole communicates with the pillar annular seal space.
During concrete enforcement, also be provided with an axially extending bore on the dress valve handgrip body, a port of axially extending bore communicates with triple-use valve, another port communicates with a port of fluid-through tube (503), radial direction through hole on the adapter sleeve of the another port of fluid-through tube and oil cylinder bottom communicates, and this radial direction through hole communicates with the pillar annular seal space.
During concrete enforcement, top cover inwall or below are provided with sealing-plug, and radial direction through hole on sealing-plug, oil cylinder inner wall, adapter sleeve or the base inner wall and axially extending bore, fluid-through tube inwall, dress valve handgrip radial direction through hole and axially extending bore and triple-use valve constitute the work seal chamber of a complete variable volume.
During concrete enforcement, the radial direction through hole on adapter sleeve inwall or the base inner wall communicates with fluid-through tube behind an axially extending bore.
During concrete enforcement, fairlead is a split-type structural with dress valve handgrip, and triple-use valve is installed on the dress valve handgrip.
Aforesaid the present invention is characterized in that: the fluid-through tube two-port is detachable with corresponding parts and connects, in case cause damage, ease of assembly and maintenance to fluid-through tube in moving process.
During concrete enforcement, oil cylinder and fluid-through tube are single piece, and fluid-through tube is arranged on the special-shaped tube wall of oil cylinder.
Beneficial effect: the present invention compares with existing like product, by changing the passage of working media turnover pillar seal chamber, the column outer wall of will living places outside the working media seal chamber, even live like this column outer wall in lifting process because of exposed damaged by extraneous factor after, can not influence the sealing performance of work with seal chamber yet; Simultaneously, live column outer wall under impaired situation, only otherwise influence intensity, still can continue use, obviously prolonged application life; Simultaneously, owing to set up external fluid-through tube, make fairlead and dress valve handgrip can realize the split setting, creatively overcome conventional art brings fairlead always with whole setting of dress valve handgrip defective, having reached the operation height can arbitrarily set according to actual needs, to avoid operating height changes, is subjected to the pillar travel limits because of the lifting of the post of living purpose.Thereby this pillar has long service life, operates adjustable for height advantage.
Description of drawings
Fig. 1 is the axial section structural representation of one embodiment of the invention;
Fig. 2 is the enlarged drawing of A portion among Fig. 1;
Fig. 3 is the axial section structural representation of another embodiment.
Fig. 4 is the enlarged drawing of B portion among Fig. 3;
Fig. 5 is the sectional view of the cylinder wall of another embodiment.
The specific embodiment
Sequence number is represented respectively among the figure: connect steel wire 1,6a, 6b, top cover 10, sealing ring 2, sealing-plug 20, dust ring 3, the post 30 of living, pillar annular seal space 301, guide ring 4, oil cylinder 40, cylinder wall 401, back-moving spring 5, dress valve handgrip 50, dress valve handgrip radial direction through hole 501, dress valve handgrip axially extending bore 502, fluid-through tube 503, adapter sleeve radial direction through hole 504, base radial direction through hole 504a, adapter sleeve axially extending bore 505, base axially extending bore 505a, sealing ring 7,8, adapter sleeve 9 prolongs joint 11, base 12, base 12a, fairlead 13.
Embodiment one
Referring to Fig. 1 and in conjunction with Fig. 2, whole pillar is a slender cylinder, and oil cylinder 40 is nested with in post 30 peripheries of living, and oil cylinder 40 upper port connect through being connected steel wire 6a with fairlead 13, and lower port is tightly connected through connecting steel wire 6b and adapter sleeve 9.Adapter sleeve 9 is that annular and axial cross section are the structural member of H shape, and the diaphragm in the H font forms the bottom sealing surface of pillar annular seal space 301.Sealing surface bottom, bottom is provided with and prolongs joint 11, prolongs joint 11 bottoms base 12 is set, and prolongs joint 11 and base 12 and is welded into one.It is to consider from enlarging the pillar scope of application that the purpose that prolongs joint 11 is set, whether prolong joint 11 is provided with and can decides according to height, if do not establish, base 12 just directly links to each other (shown in another embodiment base 12a) with oil cylinder 40 so, that is: base 12 has become base 12a, and base 12a becomes the bottom sealing surface of pillar annular seal space 301.Post 30 upper port of living connect with top cover 10 through connecting steel wire 1, and whether sealing-plug 20 is provided with also and can decides as required, can increase sealing reliability after being provided with, and also can change post 30 force-bearing situations alive, increases supporting capacity.Back-moving spring 5 is axially fixed between the sealing-plug 20 or top cover 10 inwalls and adapter sleeve 9 or base 12a of pillar annular seal space 301.
Innovative point of the present invention is on the passage of working media turnover pillar annular seal space 301: basic ideas are: in order to change the passage of working media turnover pillar annular seal space 301, the outer wall of the post 30 of living is placed outside the working media seal chamber, even live like this column outer wall in lifting process because of exposed damaged by extraneous factor after, can not influence the sealing performance of work with seal chamber yet, simultaneously, live column outer wall under impaired situation, only otherwise influence intensity, still can continue to use, to prolong pillar application life.
For this reason, in the oil cylinder outside stand alone type fluid-through tube 503 is set, communicates after port of fluid-through tube 503 and the triple-use valve sealed attachment, another port communicates with the pillar annular seal space.Under the guidance of this thinking, consider and the versatility of existing pillar that present embodiment is established a radial direction through hole 501 that is used to install triple-use valve on dress valve handgrip 50.The lower port of the axially extending bore 502 on the dress valve handgrip 50 communicates with pillar annular seal space 301 by the adapter sleeve radial direction through hole 504 that is located on adapter sleeve 9 diaphragms through fluid-through tube 503.Fluid-through tube 503 can adopt flexible pipe, also can adopt hard tube.Consider that dismounting is with easy to maintenance, the two-port of fluid-through tube 503 and dress valve handgrip 50 axially extending bores 502, adapter sleeve radial direction through hole 504 or base radial direction through hole 504a can adopt the detachable mode to connect, certainly, the mode that fluid-through tube 503 communicates with pillar annular seal space 301 has a lot of means, for example: can on adapter sleeve 9 or base 12a, offer adapter sleeve radial direction through hole 504 or base radial direction through hole 504a as present embodiment adopted, consider the convenient fluid-through tube 503 of installing, adapter sleeve radial direction through hole 504 or base radial direction through hole 504a can be positioned at outside axially extending bore 505 by being folded to one, or axially extending bore 505a, and then fluid-through tube 503 is installed.Certainly, the external port of adapter sleeve radial direction through hole 504 or base radial direction through hole 504a also can be directly towards radial opening, and need be provided with an angle coupling this moment, so that fluid-through tube 503 is installed.
Among the embodiment one, fairlead is two branch body components with dress valve handgrip, dress valve handgrip can be according to actual needs random setting height, be provided with and do not change after fixing with the pillar height change, especially even more important for the superelevation pillar.Owing to after setting up external fluid-through tube 503, just can make fairlead and dress valve handgrip become the parts of two splits.
Embodiment two
Referring to Fig. 3, and in conjunction with Fig. 4, compare with embodiment one, present embodiment is not set up in oil cylinder 40 bottoms and is prolonged joint 11, therefore, the direct mounting seat 12a in adapter sleeve 9 places, the inwall of base 12a is the ingredient of seal chamber.Because this embodiment pillar height is relatively low, fairlead 13 can not be provided with, and adopts dress valve handgrip 50 separately, and other structure is identical with embodiment, repeats no more.
Embodiment three
Referring to Fig. 5, this embodiment mainly is the cross sectional shape of expression cylinder wall 401, oil cylinder 40 is a single piece with fluid-through tube 503, fluid-through tube 503 is arranged in the special-shaped tube wall of oil cylinder 40, the upper end of fluid-through tube 503 links by crossing axially extending bore 502 sealings of taking over dress valve handgrip 50, and its lower end also links by the axially extending bore 505 of transition adapter and adapter sleeve 9 or the axially extending bore 505a sealing of base 12a.This fluid-through tube structure, its benefit is: fluid-through tube use or handling process in not fragile, compact conformation, reliability are higher.
Pillar in use, earlier in the triple-use valve liquid injection hole with 501 li of the radial direction through hole on the fluid injection gun insertion dress valve handgrip 50, hang up properly lock sleeve, the fluid injection gun handgrip of holding with a firm grip, the pumping plant working media is that highly pressurised liquid is with the one-way valve opens in the triple-use valve, highly pressurised liquid comes out from dress valve handgrip axially extending bore 502, enter pillar annular seal space 301 by fluid-through tube 503 through radial direction through hole 504 or the base radial direction through hole 504a of adapter sleeve 9 or base 12a, make the pillar seal chamber become big, the post 30 of living rises, and finishes setting prop and support just.
Along with the propelling of coal-face, the load that face roof acts on the pillar increases gradually, and when load surpassed the pillar yield load, highly pressurised liquid was opened the safety valve in the triple-use valve, and highly pressurised liquid is excessive, contracts under the pillar.When the suffered load of pillar was lower than yield load, under the effect of safety valve spring, safety valve cut out, and highly pressurised liquid stops excessive, and above-mentioned phenomenon occurs repeatedly, realized the pillar carrying.
When the pillar end-of-job, open feather valve in the triple-use valve with special use unloading handgrip, highly pressurised liquid in the pillar seal chamber returns on former road in the other direction along feed liquor, discharge by the feather valve in the triple-use valve, the post of living diminishes the pillar seal chamber under the effect of deadweight and back-moving spring, post 30 retractions (prop drawing) of living.
Pillar is finished a working cycles from setting prop (stamping support just)-carrying-prop drawing.
Claims (8)
1, a kind of hydraulic prop comprises top cover (10), fairlead (13), dress valve handgrip (50), live post (30), oil cylinder (40), base (12a) or adapter sleeve (9), triple-use valve and seal; Top cover (10) inwall, oil cylinder (40) inwall, triple-use valve are respectively the part that seal chamber is used in the work that constitutes variable volume, it is characterized in that: stand alone type is provided with a fluid-through tube (503) in oil cylinder (40) outside, a port of this fluid-through tube (503) communicates with triple-use valve, and another port communicates with pillar annular seal space (301).
2, a kind of hydraulic prop as claimed in claim 1, it is characterized in that: triple-use valve is fixed in the radial direction through hole (501) of dress valve handgrip (50), also be provided with an axially extending bore (502) on dress valve handgrip (50) body, a port of this axially extending bore (502) communicates with triple-use valve, another port connects with a port sealing of fluid-through tube (503), fluid-through tube (503) another port communicates with a radial direction through hole (504) on the adapter sleeve (9), and this radial direction through hole (504) communicates with pillar annular seal space (301).
3, a kind of hydraulic prop as claimed in claim 1, it is characterized in that: also be provided with an axially extending bore (502) on dress valve handgrip (50) body, a port of axially extending bore (502) communicates with triple-use valve, another port communicates with a port of fluid-through tube (503), radial direction through hole (504a) on the base (12a) of the another port of fluid-through tube (503) and oil cylinder (40) bottom communicates, and this radial direction through hole (504a) communicates with pillar annular seal space chamber (301).
4, a kind of hydraulic prop as claimed in claim 1 or 2 is characterized in that: fairlead (13) is a split-type structural with dress valve handgrip (50), and triple-use valve is installed on the dress valve handgrip (50).
5, as claim 1 or 2 or 3 described a kind of hydraulic props, it is characterized in that: the radial direction through hole on adapter sleeve (9) inwall or base (12a) inwall (504,504a) communicates with fluid-through tube (503) behind an axially extending bore (505,505a).
6, as claim 1 or 2 or 3 described a kind of hydraulic props, it is characterized in that: fluid-through tube (503) two-port is detachable with corresponding parts and connects.
7, as a kind of hydraulic prop of claim 1 or 2 or 3, it is characterized in that: the below of top cover (10) inwall is provided with sealing-plug (20), and the inwall that sealing-plug substitutes top cover (10) is the part of work with seal chamber.
8, a kind of hydraulic prop as claimed in claim 1 is characterized in that: oil cylinder (40) is a single piece with fluid-through tube (503), and fluid-through tube (503) is arranged on the special-shaped tube wall of oil cylinder (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154550 CN101046149A (en) | 2006-11-07 | 2006-11-07 | Single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154550 CN101046149A (en) | 2006-11-07 | 2006-11-07 | Single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101046149A true CN101046149A (en) | 2007-10-03 |
Family
ID=38771033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610154550 Pending CN101046149A (en) | 2006-11-07 | 2006-11-07 | Single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101046149A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296973A (en) * | 2010-06-22 | 2011-12-28 | 淮南舜立机械有限责任公司 | Individual hydraulic prop |
| CN102852537A (en) * | 2012-09-19 | 2013-01-02 | 上海支护机械设备有限公司 | Nickel-titanium alloy web membrane technology of single hydraulic prop for mine |
| CN107100654A (en) * | 2017-05-05 | 2017-08-29 | 淮北矿业股份有限公司 | A kind of remote individual prop fluid injection gun |
-
2006
- 2006-11-07 CN CN 200610154550 patent/CN101046149A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296973A (en) * | 2010-06-22 | 2011-12-28 | 淮南舜立机械有限责任公司 | Individual hydraulic prop |
| CN102852537A (en) * | 2012-09-19 | 2013-01-02 | 上海支护机械设备有限公司 | Nickel-titanium alloy web membrane technology of single hydraulic prop for mine |
| CN107100654A (en) * | 2017-05-05 | 2017-08-29 | 淮北矿业股份有限公司 | A kind of remote individual prop fluid injection gun |
| CN107100654B (en) * | 2017-05-05 | 2024-04-12 | 淮北矿业股份有限公司 | Remote monomer pillar annotates liquid rifle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101046149A (en) | Single hydraulic prop | |
| RU2381366C1 (en) | Supporting hydraulic stand | |
| CN201090220Y (en) | Twin-jar bi-expansion monoblock hydraulic prop | |
| CN1877174A (en) | Valve core and valve arrangement | |
| CN2835559Y (en) | Self-exhaust and lengthenable external-injection type single hydraulic support | |
| CN200982197Y (en) | Single-body hydraulic supporter | |
| CN201513184U (en) | Single hydraulic prop capable of prevent valve from flying out | |
| CN101224857A (en) | Support cylinder as well as support means and crane having the same | |
| CN201554477U (en) | Novel individual hydraulic prop | |
| CN214780409U (en) | Arm contraction oil cylinder | |
| CN205638502U (en) | Floated hydraulic column | |
| CN215979250U (en) | Hydraulic pipe column fixer | |
| CN108953285A (en) | A kind of lifting special piston cylinder | |
| CN206190303U (en) | Caving coal hydraulic support connecting rod reinforcement structure | |
| CN201144707Y (en) | Double telescopic suspension type hydraulic prop | |
| CN204689530U (en) | A kind of double-action hydraulic jack | |
| CN200967723Y (en) | Hydraulic support jack | |
| CN2563346Y (en) | Single function multiple piston multiple hydraulic cylinder | |
| CN201062518Y (en) | Single-body hydraulic supporter | |
| CN201502580U (en) | Multilevel internal tandem hydraulic pusher | |
| CN201330612Y (en) | Double-action plunger suspending type upright post for hydraulic support | |
| CN201225159Y (en) | Short-specification long-stroke single hydraulic prop | |
| CN220869776U (en) | Quick pressurization supporting cylinder | |
| CN215908042U (en) | Gap bridge type thick oil pump | |
| CN1566988A (en) | Double piston type controlled earthquake center vibrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20071003 |