CN105134260B - Increase-volume buffers strength shock resistance double-telescopic upright post - Google Patents
Increase-volume buffers strength shock resistance double-telescopic upright post Download PDFInfo
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- CN105134260B CN105134260B CN201510513645.XA CN201510513645A CN105134260B CN 105134260 B CN105134260 B CN 105134260B CN 201510513645 A CN201510513645 A CN 201510513645A CN 105134260 B CN105134260 B CN 105134260B
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Abstract
Rise a capacity-increasing type strength shock resistance double-telescopic upright post the invention discloses a kind of air chamber hydraulic capacity increasing formula strength shock resistance double-telescopic upright post and one kind.Air chamber hydraulic capacity increasing shock resistance double-telescopic upright post is made up of the outer shell with bypassing safety valve, middle cylinder live post and the air chamber hydraulic means being arranged on inside live post, and described air chamber hydraulic means reaches protecting against shock purpose by empty piston and hydraulic stem Balance Absorption impact energy.A capacity-increasing type shock resistance double-telescopic upright post that rises is made up of the outer shell with bypassing safety valve, middle cylinder live post and the cylinder that rises being arranged on inside live post, hydraulically full in the cylinder that rises, and using the pressure of liquid body in the cylinder that rises, volume increase reaches the purpose of buffering come apparatus with shock absorbing.Two kinds of strength shock resistance double-telescopic upright posts disclosed by the invention are in addition to liquid erosion control performance that general double-telescopic upright post has and safe valve protection; using the increase that is hit shock loading is substantially reduced by the method for rushing volume increase; effectively improve the shock resistance of column; so as to improve the reliability of column; it is particularly suitable for use in requiring the column of the big stroke of high shockroof hydraulic chocks, especially large-diameter.
Description
Technical field
Strength shock resistance double-telescopic upright post is buffered the present invention relates to a kind of increase-volume, it is specifically a kind of to be used for coal mine underground
The strength Anti-impacting upright column of the hydraulic support of coal-face supporting（Air chamber increase-volume double-telescopic upright post or ringfeder increase-volume are double flexible
Column）.
Background technology
Development and energy strategy with mining mechanization, shallow overburden coal seam hydraulic support, deep complicated seam hydraulic pressure branch
It is more and more that frame, tight roof hydraulic support, super high seam large-mining-height working surface hydraulic support are used.Influence seam mining peace
One of full key technology is face roof and goaf overlying rock is caving brute force attack to hydraulic support, restricts hydraulic pressure
The crucial dynamical element of support shock resistance is Anti-impacting upright column.The shock resistance of existing conventional column is poor, when
When working face shows the shock loading of strength, easily cause column rise cylinder, seal failure, even burst or the serious infringement such as fracture,
Endanger working face safety.In order to ensure the safety of coal mining, it is necessary to improve the shock resistance of column, the need of safety coal mining are met
Ask.
The content of the invention
It is an object of the invention to provide a kind of pair that be safe and reliable, simple in construction, being acted on good strength shock resistance
Telescopic column.
To achieve the above object, the present invention takes following technical scheme：
Scheme one：A kind of double flexible Anti-impacting upright columns of air chamber compression capacity-increasing type strength, it includes outer shell, middle cylinder, live post,
Bypassing safety valve is provided with the side wall of outer shell；One is set to bind cylindrical drum in the inside of live post, at the top for binding cylindrical drum
Logical liquid circular hole is provided with, can be by dropping the pressure fluid of live post；Air chamber is isolated with air slide in the bottom for the cylindrical drum that binds,
Air slide connects liquid bar, liquid bar liquid piston fluid partitioning；There is separation sleeve between liquid piston and air slide；
Liquid piston is fixed in cylindrical drum bottom of binding with fixed cover and elastic individual pen.Gas is installed in the air chamber end of liquid bar
Body check valve, screw plug is provided with liquid one end of liquid bar；
Scheme two：A kind of elastic expanding cylinder capacity-increasing type strength shock resistance double-telescopic upright post, it includes outer shell, middle cylinder, live post；
The inside of live post sets one to bind flexible cylindrical tube, and the openend for the cylindrical drum that binds is fixed on live post live post bottom；In outer shell
Side wall is provided with bypassing safety valve.
Above-mentioned shock resistance double-telescopic upright post, described bypassing safety valve interface is with being close to outer shell in outer casing wall side
The snakelike pipe of wall is coupled the cavity of resorption of outer shell, and pipe top is connected with being located at the relief valve connection of outer shell middle and lower part, bypassing safety valve
Interface is placed in the range of ± 40 degree~± 45 degree.
Advantages of the present invention and benefit：
A capacity-increasing type strength shock resistance double-telescopic upright post of the present invention that rises, when column is by percussion, due to
Middle cylinder cavity of resorption liquid is connected with liquid in the cylinder that rises, and liquid, which is pressurized, in the cylinder that rises makes to rise by an elastic expansion increase appearance liquid product and absorb punching
Hit energy, and general cushioning effect of the double-telescopic upright post without this cylinder that rises, so can significantly reduce shock loading, it is effective to protect
Protect the safety of column.
The double telescopic Anti-impacting upright columns of air chamber compression capacity-increasing type strength of the present invention, in column by percussion
When, cause air slide to move because the air of air chamber is compressed, air slide drives the movement of liquid bar；Make hydraulic cavities volume
Increase and apparatus with shock absorbing realization buffering, so can significantly reduce shock loading, be effectively protected the safety of column.
The present invention realizes buffering reduction shock loading due to adding air chamber inside live post or rising cylinder effective
While do not change double-telescopic upright post enter back flow channel, it is to avoid in order to be buffered in the difficulty of drilling deep hole on middle casing wall, hence it is evident that change
It has been apt to process industrial art performance.
The passage section and flow that increase safety valve of limits of the present invention, reduce the flow resistance of liquid, protection
Safety during column impact.
Limits of the present invention improve safety during column impact, improve the reliability of column, are particularly suitable for use in impact
Press big hydraulic support in ground.
Brief description of the drawings
Fig. 1 is the double flexible Anti-impacting upright column structural representations of the air chamber increase-volume of the embodiment of the present invention 1 strength.
Fig. 2 is the double flexible Anti-impacting upright column air chamber increase-volume buffer portions of the air chamber increase-volume of the embodiment of the present invention 1 strength
Enlarged drawing.
Fig. 3 is that the embodiment of the present invention 2 rises the double flexible Anti-impacting upright column structural representations of tin capacity-increasing type strength.
Specific embodiment
Embodiment 1：
As shown in figure 1, a kind of air chamber increase-volume strength shock resistance double-telescopic upright post, it includes outer shell 1, middle cylinder 2, live post 3
With the air cylinder 4 being arranged on inside live post；Described air cylinder one end is supported on the column cap face of cylinder D of live post, other end support
Face of cylinder G at post bottom is firm by air cylinder and live post back welding with weld seam B；Described air cylinder uses weld seam A by cylinder 401 and 402
Weld, circular hole B is provided with the end of cylinder 401, circular hole B is isolated by 402 with air chamber；By circular hole B by 12 inlet, E,
F and middle cylinder epicoele UNICOM.
As shown in Fig. 2 being equipped with outside sealing 602 and guide ring 601 on described air slide 6 to realize the sealing of air
And guiding；Described hydraulic stem 9 is connected with screw thread with air slide 6, thereon equipped with sealing 901 and breather cheek valve 5 and plug screw
11, equipped with sealing 111 on plug screw 11, to use plug screw after assembling the compressed air that backward air chamber is filled with certain pressure, inflation
11 sealings, to prevent pressure fluid air inlet room；The outside of described hydraulic piston 8 is provided with sealing 803, and inside is provided with sealing
801 and guide ring 802；Isolated between hydraulic piston 8 and air slide 6 with separation sleeve 7；Hydraulic piston 8 uses the He of fixed sleeving 10
The axial restraint of circlip 12.
As shown in P-P sections in Fig. 1, the outer casing wall of the outer shell 1 is provided with bypassing safety valve interface H, can on interface H
To couple safety valve.
Embodiment 2
A double flexible Anti-impacting upright column of capacity-increasing type strength as shown in figure 3, one kind rises, it includes outer shell 1, middle cylinder 2, live post 3
The cylinder 4 that rises is provided with being arranged in live post；A described openend of rising is supported on the face of cylinder D at live post post bottom, axially fixed with C faces
Position, will be risen cylinder and live post back welding jail with weld seam B；The cylinder that rises is welded by cylinder 401 and 402 with weld seam A, the sky of rise cylinder and live post inwall
Between E and hole F formed into middle cylinder epicoele F and enter back flow channel.
As shown in P-P sections in Fig. 3, the outer casing wall of the outer shell 1 is provided with bypassing safety valve interface G, can on interface G
To couple safety valve.
Claims (2)
1. a kind of double flexible Anti-impacting upright columns of increase-volume buffering strength, including outer shell, middle cylinder, live post and the circle being arranged on inside live post
Cylinder, sets air hydraulic device, the air hydraulic device is by air slide, liquid piston, hydraulic stem, isolation in cylinder
Set, fixed cover, circlip and corresponding sealing, guide ring composition, it is characterised in that the top of air slide and air cylinder
Air chamber is formed, is separated between air slide and liquid piston with separation sleeve, liquid piston is fixed with fixed cover and circlip
In the bottom of air cylinder, hydraulic stem passes through liquid piston and air slide phase downlink connection, and hydraulic stem is hollow rods, air chamber
End is equipped with air check valve, and hydraulic end is equipped with plug screw, by air cylinder front end aperture UNICOM plunger end inlet opening and middle cylinder epicoele,
The front support of air cylinder is fixed in plunger end, rear alignment in live post post bottom with weld seam.
2. a kind of double flexible Anti-impacting upright columns of increase-volume buffering strength according to claim 1, it is characterised in that empty removing
On the basis of Air hydraulic pressure, release the fixed constraint of cylinder front end and live post, cylinder external cylindrical surface and live post inner cylinder face it
Between form middle cylinder epicoele and enter back flow channel and cylinder expansion space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510513645.XA CN105134260B (en) | 2015-08-20 | 2015-08-20 | Increase-volume buffers strength shock resistance double-telescopic upright post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510513645.XA CN105134260B (en) | 2015-08-20 | 2015-08-20 | Increase-volume buffers strength shock resistance double-telescopic upright post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134260A CN105134260A (en) | 2015-12-09 |
| CN105134260B true CN105134260B (en) | 2017-08-15 |
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| CN201510513645.XA Active CN105134260B (en) | 2015-08-20 | 2015-08-20 | Increase-volume buffers strength shock resistance double-telescopic upright post |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369010B (en) * | 2016-10-27 | 2018-04-13 | 华南理工大学 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method |
| CN108671666A (en) * | 2018-06-26 | 2018-10-19 | 成都易态科技有限公司 | Gas buffer component and protecting against shock filter |
| CN108612549B (en) * | 2018-07-13 | 2023-10-24 | 山东科技大学 | Buffer system for hydraulic support to resist impact and pressure and application thereof |
| CN110219682B (en) * | 2019-05-31 | 2024-08-16 | 平顶山平煤机煤矿机械装备有限公司 | Impact-resistant upright post with high-elasticity detachable device |
| CN113175342B (en) * | 2021-04-15 | 2023-05-23 | 中煤科工开采研究院有限公司 | Shock-resistant double-telescopic upright post |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU605015A1 (en) * | 1974-04-02 | 1978-04-30 | Дружковский Ордена Ленина Машиностростельный Завод Им.50-Летия Советской Украины | Hudraulic prop |
| US4167198A (en) * | 1977-02-17 | 1979-09-11 | Salzgitter Maschinen Aktiengesellschaft | Overpressure valve for a hydraulic pit prop |
| CN201241716Y (en) * | 2008-08-27 | 2009-05-20 | 天地科技股份有限公司 | Single-inlet liquid return orifice double-telescoping upright post |
| CN103195451B (en) * | 2013-03-12 | 2015-12-30 | 合肥工业大学 | Smart well support buffering shock-absorbing device |
| CN103982208A (en) * | 2014-05-19 | 2014-08-13 | 辽宁工程技术大学 | Mine inner and outer turnover resistive energy-absorption anti-impact device |
| CN204572019U (en) * | 2015-01-27 | 2015-08-19 | 安徽理工大学 | A kind of hydraulic supporting dagger with buffering |
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