CN201554477U - Novel individual hydraulic prop - Google Patents
Novel individual hydraulic prop Download PDFInfo
- Publication number
- CN201554477U CN201554477U CN2009202816856U CN200920281685U CN201554477U CN 201554477 U CN201554477 U CN 201554477U CN 2009202816856 U CN2009202816856 U CN 2009202816856U CN 200920281685 U CN200920281685 U CN 200920281685U CN 201554477 U CN201554477 U CN 201554477U
- Authority
- CN
- China
- Prior art keywords
- lengthening section
- pillar
- post
- column cap
- oil cylinder
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a mining support equipment, in particular disclosing a novel individual hydraulic prop. The novel individual hydraulic prop comprises an oil cylinder and a plunger which are arranged from the outside to the inside; a chapiter is arranged at the lower part of the oil cylinder, the upper part of the oil cylinder is connected with a big guide sleeve; the upper end of the plunger is sealed by a cover gasket; an upper offsetting spring is arranged in the sealed cavity of the prop, the upper end and the lower end of the upper offsetting spring are connected respectively with the suspension loop of the cover gasket and the suspension loop of the chapiter. The novel individual hydraulic prop is characterized in that the chapiter and the prop are on the same central axis; axial and radial through holes are arranged on the chapiter, the axial through hole is communicated with the sealed cavity of the prop, the radial through hole is provided with a three-purpose valve, an extended part is arranged at the lower part of the chapiter. In the utility model, the prop has the advantages that long traveling distance, strong support force, high capacity of resisting unbalance loading, proper height of poured-in liquid, convenience for field operation, and low cost for manufacture and maintenance.
Description
(1) technical field
The utility model relates to a kind of mining support apparatus, particularly a kind of novel monomeric hydraulic prop.
(2) background technology
Hydraulic prop is mainly used in the roof timbering of coal-face under the coal mine, the end support of fully-mechanized mining working and advance support.Owing to be subjected to the influence of factors such as geological conditions, cost of equipment, to adopt the hydraulic support except that the fully-mechanized mining working supporting in the large-scale colliery of part in China at present, hydraulic prop is still adopted in the supporting of most of medium and small colliery coal-face.
China Patent No. 971070636 disclosed floated hydraulic props, be exactly a kind of of this class outside injection type hydraulic pillar, its structure comprises top cover, post alive, dress valve handgrip, oil cylinder, base, back-moving spring, triple-use valve and guide ring and seal etc., seal chamber that these parts are surrounded as, its operating principle be utilize this variable-volume seal chamber under the effect of working media, make that post alive is flexible up and down to carry out work.
And 200320120192.7 disclosed pairs of extension single hydraulic props of China Patent No., it is the another kind of this class outside injection type hydraulic pillar, its structure comprises top cover, seal cover, post alive, column sleeve, middle cylinder, handgrip body, triple-use valve, oil cylinder, base, back-moving spring, seal and connects steel wire etc., seal chamber that these parts are surrounded as, its operating principle also are to utilize the seal chamber of this variable-volume cylinder and post the two poles of the earth stroke of living are flexible up and down in making under the effect of working media to carry out work.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 along with the injection of working media, it is big that seal chamber becomes like this, the post (the middle cylinder and the post of living) 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 (the middle cylinder and the post of living) reduces the pillar retraction.The every injection of working media and releasing once, pillar be setting prop and fall post once just, finishes a working cycles.
More than two kinds of outside injection type hydraulic pillar exist following problem in actual applications: one, the pillar oil cylinder of big specification, the post of living are oversize, rigidity is relatively poor, the post of living is easy to generate bending, support force is little, the anti-bias load ability; Two, because of the outer surface of column alive as sealing surface leaks outside, easy damaged, the post of living is long again, and maintenance post difficulty alive is big, the expense height; Three, fluid injection is installed on the handgrip body with triple-use valve, and the handgrip body is on the oil cylinder top, and is highly too high, general workman's fluid injection difficulty; Four, triple-use valve is installed on the handgrip body, and away from pillar axes, valve port sustains damage easily during carrying; Five, the backflow of the working media of this kind pillar is the aperture by the column bottom of living, and working media is not easy to discharge in the annular seal space of pillar unloading back, increases pillar weight greatly.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, provide that a kind of support force is big, the anti-bias load ability is strong, impulse stroke big, carrying flexibly, valve port is not fragile, be convenient to operate, novel monomeric hydraulic prop that maintenance cost is low.
The utility model is achieved by the following technical solution:
A kind of novel monomeric hydraulic prop, comprise the oil cylinder that ecto-entad is installed and the post of living, the oil cylinder bottom is provided with column cap, the upper end is connected with big fairlead, the upper end of post alive is sealed by seal cover, upper reset spring is installed in the pillar seal chamber, its upper and lower side is connected with the link of seal cover and the link of column cap respectively, it is characterized in that: column cap and pillar are on same central axis, axial and radial direction through hole are set on the column cap, axially extending bore is communicated with the pillar seal chamber, and triple-use valve is installed on the radial direction through hole, and column cap is installed lengthening section down.
The utility model is provided with seal cover, live post, oil cylinder and big fairlead, in the oil cylinder bottom column cap and lengthening section is set, and is welded into an integral body with oil cylinder; Through hole is set on the column cap, and axial hole communicates with the pillar seal chamber of pillar, and radial hole is installed triple-use valve in order to fluid injection.Lengthening section can be provided with length as required, is that fluid injection is highly moderate thereby make the column cap height; By lengthening section is set, shortened the relatively poor post alive of rigidity, increase the yield load and the anti-bias load ability of pillar; The post of living simultaneously shortens, and reduces pillar processing and maintenance cost; By being provided with triple-use valve is installed, valve port is not damaged with pillar column cap on an axis; By column cap is set, change the passage of working media turnover annular seal space, make working media after the pillar unloading, can all flow out the weight when alleviating onsite moving.
Be provided with middle cylinder between oil cylinder described in the utility model and the post alive, middle cylinder upper end is connected with little fairlead.In cylinder the stroke that has increased pillar is set, connect little fairlead in the top and constitute seal chamber.Middle cylinder can not be provided with in compound hydraulic prop.
Lengthening section can be the long-pending variable seal chamber of the segment body that can stretch that communicates with the pillar seal chamber, and also can be only pipe of rigidity, and welding base in bottom bores at the end preventing; The former is compound pillar, and the latter is two telescopic type pillars.
The structure of compound pillar is: the four-way hole is set on the described column cap, lengthening section cavity and pillar seal chamber are communicated with, lengthening section is equipped with lengthening section cylinder and lengthening section post from outside to inside, lengthening section cylinder upper end is equipped with the handgrip body, the lower end is equipped with base, terminate at the column cap lower end on the lengthening section post, following back-moving spring is installed in the lengthening section cavity, and its upper and lower side is connected with the link of column cap and the link of base respectively.
In this structure, it is LAP that the lengthening section post can be stretched out in the lengthening section cylinder in the column cap lower end, and the column cap upper end stretches out in oil cylinder that cylinder is a LAP one section, therefrom to stretch out one section post alive be LAP to cylinder, thereby guarantee the stroke that whole pillar is enough big, and minimum constructive height is less, transports nimble; By column cap is set, make the triple-use valve setting height(from bottom) be fit to execute-in-place, and triple-use valve is installed on the pillar axes, make valve port be difficult for sustaining damage; Oil cylinder, the post of living are all made two sections or three sections, reduce the processing maintenance cost; Shorten the relatively poor post alive of rigidity, increase the yield load and the anti-bias load ability of pillar; By the passage that column cap changes working media turnover annular seal space is set, make working media when unloading, can all flow out the weight when alleviating onsite moving.
In this structure, in the lengthening section cavity, lengthening section post lower end is equipped with piston.Lengthening section cylinder and handgrip body are stretched out in lengthening section post upper end, are welded on the column cap lower end, constitute the seal chamber of variable volume jointly by lengthening section cylinder, lengthening section post, lengthening section piston and base, and communicate with the pillar seal chamber on column cap top; And middle cylinder can be set on the compound pillar of pillar seal chamber, can not be provided with yet.
The structure of two telescopic type pillars is: three through holes are set on the described column cap, and lengthening section is made up of the steel pipe identical with the oil cylinder external diameter, and the steel pipe bottom is equipped with base.
In this structure, oil cylinder, middle cylinder and the post of living constitute two telescopic props, three through holes on the column cap, and axial hole communicates with the pillar seal chamber, and radial hole is installed triple-use valve in order to fluid injection.Lengthening section can be provided with as required, and making the column cap height is that fluid injection is highly moderate, is convenient to execute-in-place.
In this structure, fairlead can be not used in sealing, and in the pillar seal chamber, the lower end of middle cylinder is connected with big piston, and the lower end of the post of living is connected with valve piston, and oil cylinder, middle cylinder, the post of living, big valve piston and seal cover constitute the seal chamber of variable volume jointly.
Seal cover described in the utility model is connected with top cover by elastic cylindrical pin.Under the top cover, the column wall of living is established seal cover, and seal cover is the part of pillar seal chamber, constitutes hermetically-sealed construction jointly.
The utility model pillar stroke is big, support force is big, the anti-bias load ability is strong, and fluid injection is highly moderate, is convenient to execute-in-place, the triple-use valve mouth is on pillar axes, valve port is difficult for sustaining damage, and unloading back working media all releases, the weight of pillar when alleviating carrying, each section cylinder, column length are shorter, and processing and maintenance cost are low.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the compound pier construction schematic diagram that has middle cylinder that piston is arranged of the utility model;
Fig. 2 is the compound pier construction schematic diagram that has middle cylinder not have piston of the utility model;
Fig. 3 has the pier construction schematic diagram of piston for cylinder in the compound nothing of the utility model;
Fig. 4 does not have the pier construction schematic diagram of piston for cylinder in the compound nothing of the utility model;
Fig. 5 does not have the pier construction schematic diagram of piston for the two telescopic types of the utility model;
Fig. 6 has the pier construction schematic diagram of piston for the two telescopic types of the utility model.
Among the figure, 1 top cover, 2 seal covers, 3 posts of living, 4 little fairleads, cylinder in 5,6 big fairleads, 7 oil cylinders, 8 valve pistons, 9 big pistons, 10 upper reset springs, 11 column caps, 12 lengthening section posts, 13 handgrip bodies, 14 lengthening section cylinders, 15 times back-moving springs, 16 bases, 17 elastic cylindrical pins.
(5) specific embodiment
Accompanying drawing is a specific embodiment of the utility model.This embodiment comprises the oil cylinder 7 that ecto-entad is installed and the post 3 of living, oil cylinder 7 bottoms are provided with column cap 11, the upper end is connected with big fairlead 6, the upper end of post 3 alive is by seal cover 2 sealings, upper reset spring 10 is installed in the pillar seal chamber, its upper and lower side is connected with the link of seal cover 2 and the link of column cap 11 respectively, column cap 11 and pillar are on same central axis, axial and radial direction through hole are set on the column cap 11, axially extending bore is communicated with the pillar seal chamber, triple-use valve is installed on the radial direction through hole, and column cap is installed lengthening section 11 times; Described seal cover 2 is connected with top cover 1 by elastic cylindrical pin 17.
As shown in Figure 1 and Figure 2, cylinder 5 in being provided with between described oil cylinder 7 and the post 3 alive, middle cylinder 5 upper ends are connected with little fairlead 4; On the described column cap 11 the four-way hole is set, lengthening section cavity and pillar seal chamber are communicated with, lengthening section is equipped with lengthening section cylinder 14 and lengthening section post 12 from outside to inside, lengthening section cylinder 14 upper ends are equipped with handgrip body 13, the lower end is equipped with base 16, terminate at column cap 11 lower ends on the lengthening section post 12, following back-moving spring 15 is installed in the lengthening section cavity, and its upper and lower side is connected with the link of column cap 11 and the link of base 16 respectively.
Hydraulic prop in use, on the radial direction through hole of column cap 11, install triple-use valve, triple-use valve and column cap 11 are sealed by the O RunddichtringO, fluid injection gun is inserted in the triple-use valve liquid injection hole, hang up properly lock sleeve, the fluid injection gun handgrip of holding with a firm grip, the pumping plant working media be high-pressure emulsion with the one-way valve opens in the triple-use valve, highly pressurised liquid enters the pillar seal chamber through the column cap axially extending bore by triple-use valve, pillar is under the sealing function of seal, it is big that the pillar seal chamber becomes, and lengthening section post 12 rises, and supporting head 11, oil cylinder 7, the middle cylinder 5 and the post 3 of living rise, simultaneously, middle cylinder 5 stretches out oil cylinder 7, and cylinder 5 during the post 3 of living stretches out withstands on the top board up to stud overcap 1, fluid pressure reaches pumping plant pressure in the pillar seal chamber, finishes pillar setting prop and support just.
Difference between Fig. 1 and Fig. 2 is that in the lengthening section cavity of Fig. 1, lengthening section post 12 lower ends are equipped with piston.This equipment relates to the sealing problem of whole pillar, and the lengthening section cavity can seal without handgrip body 13, and adopts piston seal.
Fig. 3, Fig. 4 and Fig. 1, Fig. 2 are in a ratio of another embodiment of the present utility model, in their structure, do not have the setting of middle cylinder 5.Hydraulic prop in use, highly pressurised liquid enters the pillar seal chamber through the axially extending bore of column cap 11, under the sealing function of the seal of pillar, it is big that the pillar seal chamber becomes, and lengthening section post 12 rises, and supporting head 11, oil cylinder 7 and post 3 risings of living, the post 3 of living simultaneously stretches out oil cylinder 7, withstand on the top board up to stud overcap 1, fluid pressure reaches pumping plant pressure in the pillar seal chamber, finishes pillar setting prop and support just.
As Fig. 5, shown in Figure 6, cylinder 5 in being provided with between described oil cylinder 7 and the post 3 alive, middle cylinder 5 upper ends are connected with little fairlead 4; Three through holes are set on the column cap 11, and lengthening section is made up of the steel pipe identical with the oil cylinder external diameter, and the steel pipe bottom is equipped with base 16.
Hydraulic prop in use, on the radial direction through hole of column cap 11, install triple-use valve, triple-use valve and column cap 11 are sealed by the O RunddichtringO, fluid injection gun is inserted in the triple-use valve liquid injection hole, hang up properly lock sleeve, the fluid injection gun handgrip of holding with a firm grip, the pumping plant working media be high-pressure emulsion with the one-way valve opens in the triple-use valve, highly pressurised liquid is by triple-use valve, enters the pillar seal chamber through the axially extending bore of column cap 11, pillar is under the sealing function of seal, it is big that the pillar seal chamber becomes, and the post 3 of living rises, and withstands on the top board up to stud overcap 1, fluid pressure reaches pumping plant pressure in the pillar seal chamber, finishes pillar setting prop and support just.
Difference between Fig. 5 and Fig. 6 is: in the pillar seal chamber of Fig. 6, the lower end of middle cylinder 5 is connected with big piston 9, the lower end of post 3 alive is connected with valve piston 8, its difference is that fairlead is not used in sealing, and adopts big piston 9, valve piston 8, oil cylinder 7, middle cylinder 5, post 3 alive and seal cover 2 common formation seal chambers.
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 of 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 is directly by the radial direction through hole on the column cap 11, feather valve by triple-use valve is discharged, middle cylinder 5, the post 3 of living bounce back under the effect of deadweight and upper reset spring 10, the pillar seal chamber diminishes (prop drawing), is reduced to minimum constructive height up to pillar.
Pillar is finished a working cycles from setting prop (stamping support just)---carrying---prop drawing.
Claims (7)
1. novel monomeric hydraulic prop, comprise the oil cylinder (7) that ecto-entad is installed and the post (3) of living, oil cylinder (7) bottom is provided with column cap (11), the upper end is connected with big fairlead (6), the upper end of post alive (3) is sealed by seal cover (2), upper reset spring (10) is installed in the pillar seal chamber, its upper and lower side is connected with the link of seal cover (2) and the link of column cap (11) respectively, it is characterized in that: column cap (11) and pillar are on same central axis, axial and radial direction through hole are set on the column cap (11), axially extending bore is communicated with the pillar seal chamber, and triple-use valve is installed on the radial direction through hole, and column cap (11) is installed lengthening section down.
2. novel monomeric hydraulic prop according to claim 1 is characterized in that: be provided with middle cylinder (5) between described oil cylinder (7) and the post alive (3), middle cylinder (5) upper end is connected with little fairlead (4).
3. novel monomeric hydraulic prop according to claim 1 and 2, it is characterized in that: described column cap is provided with the four-way hole on (11), lengthening section cavity and pillar seal chamber are communicated with, lengthening section is equipped with lengthening section cylinder (14) and lengthening section post (12) from outside to inside, lengthening section cylinder (14) upper end is equipped with handgrip body (13), the lower end is equipped with base (16), terminate at column cap (11) lower end on the lengthening section post (12), following back-moving spring (15) is installed in the lengthening section cavity, and its upper and lower side is connected with the link of column cap (11) and the link of base (16) respectively.
4. novel monomeric hydraulic prop according to claim 2 is characterized in that: described column cap is provided with three through holes on (11), and lengthening section is made up of the steel pipe identical with oil cylinder (7) external diameter, and the steel pipe bottom is equipped with base (16).
5. novel monomeric hydraulic prop according to claim 3 is characterized in that: in the described lengthening section cavity, lengthening section post (12) lower end is equipped with piston.
6. novel monomeric hydraulic prop according to claim 4 is characterized in that: in the described pillar seal chamber, the lower end of middle cylinder (5) is connected with big piston (9), and the lower end of the post (3) of living is connected with valve piston (8).
7. according to claim 1,2,4 or 6 described novel monomeric hydraulic props, it is characterized in that: described seal cover (2) is connected with top cover (1) by elastic cylindrical pin (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202816856U CN201554477U (en) | 2009-11-20 | 2009-11-20 | Novel individual hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202816856U CN201554477U (en) | 2009-11-20 | 2009-11-20 | Novel individual hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554477U true CN201554477U (en) | 2010-08-18 |
Family
ID=42614159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202816856U Expired - Fee Related CN201554477U (en) | 2009-11-20 | 2009-11-20 | Novel individual hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554477U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527223A (en) * | 2013-11-05 | 2014-01-22 | 姜星柱 | Mine single hydraulic prop capable of extending and retracting oppositely |
| CN104912575A (en) * | 2014-11-28 | 2015-09-16 | 刘立起 | Single hydraulic prop repair method and compound single hydraulic prop |
| CN107130985A (en) * | 2017-07-12 | 2017-09-05 | 山东瀚业机械有限公司 | A kind of hydraulic prop |
-
2009
- 2009-11-20 CN CN2009202816856U patent/CN201554477U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527223A (en) * | 2013-11-05 | 2014-01-22 | 姜星柱 | Mine single hydraulic prop capable of extending and retracting oppositely |
| CN104912575A (en) * | 2014-11-28 | 2015-09-16 | 刘立起 | Single hydraulic prop repair method and compound single hydraulic prop |
| CN107130985A (en) * | 2017-07-12 | 2017-09-05 | 山东瀚业机械有限公司 | A kind of hydraulic prop |
| CN107130985B (en) * | 2017-07-12 | 2023-11-03 | 山东瀚业机械有限公司 | Single hydraulic prop |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7717649B2 (en) | Suspending hydraulic pillar | |
| CN201554477U (en) | Novel individual hydraulic prop | |
| CN201090220Y (en) | Twin-jar bi-expansion monoblock hydraulic prop | |
| CN206707659U (en) | A kind of negative pressure unfreezing antiscale hydraulic anchor | |
| CN201513184U (en) | Single hydraulic prop capable of prevent valve from flying out | |
| CN201025041Y (en) | External injection monomer hydraulic pressure supporting pole | |
| CN201062518Y (en) | Single-body hydraulic supporter | |
| CN205638502U (en) | Floated hydraulic column | |
| CN203130113U (en) | Dual-extension individual hydraulic prop | |
| CN201330612Y (en) | Double-action plunger suspending type upright post for hydraulic support | |
| CN201016271Y (en) | Pneumatic hammer for well drilling | |
| CN101046149A (en) | Single hydraulic prop | |
| CN204434186U (en) | A kind of doublestroke dual thrust hydraulic jack | |
| CN203925531U (en) | The anti-post drainage suspension hydraulic prop of crossing | |
| CN201460920U (en) | Monomer hydraulic support post for mine | |
| CN201225159Y (en) | Short-specification long-stroke single hydraulic prop | |
| CN201351597Y (en) | Filling valve of pressure transmitting oil well pump | |
| CN201496078U (en) | Top cover injection type single hydraulic prop | |
| CN201043470Y (en) | Non-soldering double-oil cylinder suspending type mining mono-block hydraulic prop | |
| CN201568062U (en) | Novel double-telescopic-single-body hydraulic prop | |
| CN204591315U (en) | A kind of light-duty mining single hydraulic supporting column with suspension type plunger | |
| CN201297178Y (en) | Dual-telescopic protective suspension single hydraulic prop | |
| CN202465172U (en) | Cylinder installing jack | |
| CN201330611Y (en) | Double-action plunger type upright post for hydraulic support | |
| CN202544869U (en) | Combined enhanced individual hydraulic prop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Yankuang Light Alloy Co., Ltd. Assignor: Yankuang Group Ltd. Contract record no.: 2012370000135 Denomination of utility model: Novel single hydraulic prop Granted publication date: 20100818 License type: Exclusive License Record date: 20120502 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20121120 |