CN217233949U - Bottom adjusting jack and bottom lifting jack combined liquid supply system for hydraulic support - Google Patents
Bottom adjusting jack and bottom lifting jack combined liquid supply system for hydraulic support Download PDFInfo
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- CN217233949U CN217233949U CN202221111046.7U CN202221111046U CN217233949U CN 217233949 U CN217233949 U CN 217233949U CN 202221111046 U CN202221111046 U CN 202221111046U CN 217233949 U CN217233949 U CN 217233949U
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Abstract
The utility model relates to a hydraulic support is with transferring end jack, lifting end jack combination feed liquid system. The bottom adjusting jack and the bottom lifting jack combined liquid supply system for the hydraulic support are poor in bottom lifting effect, and therefore the bottom adjusting jack and the bottom lifting jack combined liquid supply system for the hydraulic support comprises a bottom adjusting jack, a bottom lifting jack, a left stand column, a high-pressure liquid supply pipe, a liquid return pipe, a bottom adjusting electromagnetic reversing valve and a liquid control switching valve, the liquid control switching valve comprises a contraction cavity liquid control reversing valve and an extension cavity liquid control reversing valve, the contraction cavity liquid control reversing valve and the extension cavity liquid control reversing valve respectively comprise a control port, a working port, two switching ports and a valve core, and two channels are arranged on the valve core. The utility model discloses hydraulic support lifts end efficiently with transferring end jack, lifting end jack combination feed liquid system, and it is few to move a frame and gush the coal, is fit for combining to adopt the colliery and uses.
Description
Technical Field
The utility model relates to a hydraulic support is with transferring end jack, lifting end jack combination feed liquid system.
Background
In the process of automatic follow-up of the hydraulic support, the bottom is not lifted or the bottom lifting effect is general when partial supports move, so that the moving time is prolonged, and the forward coal burst amount of the supports is increased. The labor intensity of manual coal cleaning is high, the working efficiency is reduced, and the potential safety hazard is high. If the bottom lifting effect is to be improved, a hydraulic control one-way lock must be added to the bottom lifting jack of the support, and for how to add the bottom lifting one-way lock, the original bottom adjusting one-way lock is researched and determined to be changed into the bottom lifting one-way lock, so that the functions of a liquid supply pipeline and a corresponding controller must be considered and modified.
As shown in fig. 1, the bottom-adjusting jack and bottom-lifting jack combined liquid supply system for the existing hydraulic support comprises a bottom-adjusting jack, a bottom-lifting jack, a left upright post, a high-pressure liquid supply pipe and a liquid return pipe, wherein the left upright post, the bottom-adjusting jack and the bottom-lifting jack are respectively provided with a left upright post electro-hydraulic directional valve set, a bottom-adjusting electro-hydraulic directional valve set and a bottom-lifting directional valve set, the bottom-adjusting jack is provided with an extension cavity and a contraction cavity, the bottom-lifting jack and the left upright post are respectively provided with a column lowering cavity and a column lifting cavity, and the bottom-adjusting electro-hydraulic directional valve set comprises a contraction cavity high-pressure pipe, a contraction cavity hydraulic directional valve, a contraction cavity electromagnetic directional valve, an extension cavity high-pressure pipe, an extension cavity hydraulic directional valve and an extension cavity electromagnetic directional valve.
The control port of the contracting cavity liquid control reversing valve is communicated with the high-pressure liquid supply pipe and the liquid return pipe through the contracting cavity electromagnetic reversing valve, and the high-pressure liquid supply pipe or the liquid return pipe is selectively communicated with the contracting cavity liquid control reversing valve.
The extension cavity of the bottom adjusting jack is communicated with the high-pressure liquid supply pipe and the liquid return pipe through an extension cavity high-pressure pipe and an extension cavity hydraulic control reversing valve, and can be selectively communicated with the high-pressure liquid supply pipe or the liquid return pipe.
The left upright post electro-hydraulic reversing valve group comprises a rising post cavity high-pressure pipe, a rising post cavity hydraulic control reversing valve and a rising post cavity electromagnetic reversing valve, and the bottom-lifting electro-hydraulic reversing valve group respectively comprises a falling post cavity high-pressure pipe, a rising post cavity hydraulic control reversing valve and a rising post cavity electromagnetic reversing valve.
The control port of the lift column cavity liquid control reversing valve is communicated with the high-pressure liquid supply pipe and the liquid return pipe through the lift column cavity electromagnetic reversing valve, and can be selectively communicated with the high-pressure liquid supply pipe or the liquid return pipe. The contraction cavity high-pressure pipe of the bottom adjusting jack is also communicated with the rising column cavity high-pressure pipe of the left upright column.
And the bottom adjusting jack is used for adjusting the adjacent support in the hydraulic support moving process. But in practice, adjacent supports do not need to be adjusted most of the time, so that the bottom adjusting jack does not need to be actuated most of the time, and the utilization rate of equipment is low.
Disclosure of Invention
The to-be-solved technical problem of the utility model is how to overcome the not enough of prior art, provide an equipment utilization rate height, lift at the bottom effectual hydraulic support with transfer end jack, lift end jack combination feed liquid system.
In order to solve the technical problem, the bottom adjusting jack and bottom lifting jack combined liquid supply system for the hydraulic support comprises a bottom adjusting jack, a bottom lifting jack, a left upright post, a high-pressure liquid supply pipe and a liquid return pipe, wherein the left upright post, the bottom adjusting jack and the bottom lifting jack are respectively provided with a left upright post electro-hydraulic reversing valve group, a bottom adjusting electro-hydraulic reversing valve group and a bottom lifting reversing valve group; the left upright post electro-hydraulic directional valve group comprises a lifting post cavity hydraulic control directional valve and a lifting post cavity electromagnetic directional valve, and is provided with a lifting post cavity high-pressure pipe, the bottom lifting electro-hydraulic directional valve group comprises a bottom lifting post cavity hydraulic control directional valve and a bottom lifting post cavity electromagnetic directional valve, and is provided with a bottom lifting post cavity high-pressure pipe, and the bottom lifting post cavity high-pressure pipe, and is characterized in that: the hydraulic control switching valve comprises a contraction cavity hydraulic control switching valve and an extension cavity hydraulic control switching valve, the contraction cavity hydraulic control switching valve and the extension cavity hydraulic control switching valve respectively comprise a control port, a working port, two switching ports and a valve core, and two channels are arranged on the valve core.
The contraction cavity hydraulic control reversing valve is connected in series to the contraction cavity high-pressure pipe, a working port of the contraction cavity hydraulic control reversing valve is communicated with the contraction cavity hydraulic control reversing valve through the contraction cavity high-pressure pipe, one switching port of the contraction cavity hydraulic control reversing valve is communicated with a contraction cavity of the bottom adjusting jack through the contraction cavity high-pressure pipe, and the other switching port of the contraction cavity hydraulic control reversing valve is communicated with a column descending cavity of the bottom lifting jack through the high-pressure pipe and a column lifting and descending cavity high-pressure pipe of the bottom lifting jack.
The hydraulic control reversing valve of the extension cavity is connected in series with the high-pressure pipe of the extension cavity, the working port of the hydraulic control reversing valve of the extension cavity is communicated with the hydraulic control reversing valve of the extension cavity through the high-pressure pipe of the extension cavity, one switching port of the hydraulic control reversing valve of the extension cavity is communicated with the extension cavity of the bottom adjusting jack through the high-pressure pipe, the high-pressure pipe of the bottom lifting column cavity of the bottom lifting jack is communicated with the column lifting cavity of the bottom lifting jack, and after the hydraulic control reversing valve of the contraction cavity and the working port of the hydraulic control reversing valve of the extension cavity are connected in parallel, the hydraulic control reversing valve of the contraction cavity is communicated with the high-pressure liquid supply pipe and the liquid return pipe through the high-pressure pipe and the bottom adjusting electromagnetic reversing valve, and the high-pressure liquid supply pipe or the liquid return pipe can be switched on. The structures of the contraction cavity hydraulic control reversing valve and the expansion cavity hydraulic control reversing valve are the same as those of the existing hydraulic control reversing valve.
When the bottom adjusting jack does not need to be adjusted, working ports of the contraction cavity hydraulic control reversing valve and the extension cavity hydraulic control reversing valve are communicated with the liquid return pipe through the bottom adjusting electromagnetic reversing valve, and the contraction cavity hydraulic control reversing valve and the extension cavity hydraulic control reversing valve are respectively connected with the column lowering cavity and the column lifting cavity of the bottom lifting jack under the control of low-pressure signals. At the moment, the bottom lifting jack can obtain extra liquid supply from the original bottom electricity regulating reversing valve group, so that the lifting speed of the bottom lifting jack is effectively increased, the bottom lifting efficiency of the bottom lifting jack is greatly improved, and the phenomenon of coal burst before the frame is reduced.
When the bottom jack needs to be adjusted, the working ports of the contraction cavity hydraulic control reversing valve and the expansion cavity hydraulic control reversing valve are communicated with the high-pressure liquid supply pipe through the bottom adjusting electromagnetic reversing valve. The contraction cavity hydraulic control reversing valve and the extension cavity hydraulic control reversing valve are respectively connected with the contraction cavity and the extension cavity of the bottom adjusting jack under the control of a high-pressure signal, and the bottom adjusting jack can be adjusted according to the existing mode. By the design, the structure is simple, the switching is convenient, and the equipment utilization rate is high.
And a hydraulic control one-way valve is arranged between the bottom adjusting jack and the hydraulic control switching valve, and a safety valve is arranged between the hydraulic control one-way valve and the bottom adjusting jack. By the design, the safety is improved.
The utility model discloses hydraulic support lifts end efficiently with transferring end jack, lifting end jack combination feed liquid system, and it is few to move a frame and gush the coal, is fit for combining to adopt the colliery and uses.
Drawings
The utility model discloses hydraulic support is with transferring end jack, lifting end jack combination feed liquid system and is explained further below with reference to the accompanying drawing:
FIG. 1 is a schematic structural view of a combined liquid supply system of a bottom adjusting jack and a bottom lifting jack for a conventional hydraulic support;
FIG. 2 is a schematic structural view of a combined liquid supply system of the bottom adjusting jack and the bottom lifting jack for the hydraulic support.
In the figure: 1 is a bottom adjusting jack, 2 is a bottom lifting jack, 3 is a left upright post, 4 is a high-pressure liquid supply pipe, 5 is a liquid return pipe, 6 is a contraction cavity hydraulic control reversing valve, 7 is a contraction cavity electromagnetic reversing valve, 8 is an extension cavity hydraulic control reversing valve, 9 is an extension cavity electromagnetic reversing valve, 10 is a contraction cavity high-pressure pipe, 11 is an extension cavity high-pressure pipe, 12 is a rising column cavity hydraulic control reversing valve, 13 is a rising column cavity electromagnetic reversing valve, 14 is a rising column cavity high-pressure pipe, 15 is a bottom lifting column cavity hydraulic control reversing valve, 16 is a bottom lifting column cavity electromagnetic reversing valve, 17 is a bottom lifting column cavity high-pressure pipe, 18 is a bottom lifting column cavity high-pressure pipe, 19 is a bottom adjusting electromagnetic reversing valve, 20 is a hydraulic control reversing valve, 201 is a cavity retracting hydraulic control reversing valve, 202 is an extension cavity reversing valve, 203 is a channel, 21, 22, 23 are all high-pressure pipes, 24 is a one-way valve, 25 is a control port, B is a working port, and B is a working port, C1 and C2 are two switching ports, and D is a valve core.
Detailed Description
The first implementation mode comprises the following steps: the bottom adjusting jack and bottom lifting jack combined liquid supply system for the hydraulic support comprises a bottom adjusting jack 1, a bottom lifting jack 2, a left upright post 3, a high-pressure liquid supply pipe 4 and a liquid return pipe 5, wherein the left upright post 3, the bottom adjusting jack 1 and the bottom lifting jack 2 are respectively provided with a left upright post electro-hydraulic reversing valve set, a bottom electric-hydraulic reversing valve set and a bottom lifting reversing valve set, the bottom adjusting jack 1 is provided with an extension cavity and a contraction cavity, the bottom lifting jack 2 and the left upright post 3 are respectively provided with a column lowering cavity and a column lifting cavity, the bottom electric-hydraulic reversing valve set comprises a contraction cavity hydraulic control reversing valve 6, a contraction cavity electromagnetic reversing valve 7, an extension cavity hydraulic control reversing valve 8 and an extension cavity electromagnetic reversing valve 9, and is provided with a contraction cavity high-pressure pipe 10 and an extension cavity high-pressure pipe 11;
the contracting cavity of the bottom adjusting jack 1 is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through a contracting cavity high-pressure pipe 10 and a contracting cavity liquid control reversing valve 6, the high-pressure liquid supply pipe 4 or the liquid return pipe 5 can be selectively communicated, a control port of the contracting cavity liquid control reversing valve 6 is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through a contracting cavity electromagnetic reversing valve 7, and the high-pressure liquid supply pipe 4 or the liquid return pipe 5 is selectively communicated.
The extension cavity of the bottom adjusting jack 1 is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through an extension cavity high-pressure pipe 11 and an extension cavity hydraulic control reversing valve 8, and can selectively conduct the high-pressure liquid supply pipe 4 or the liquid return pipe 5, the control port of the extension cavity hydraulic control reversing valve 8 is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through an extension cavity electromagnetic reversing valve 9, and can selectively conduct the high-pressure liquid supply pipe 4 or the liquid return pipe 5.
The left upright post electro-hydraulic directional valve group comprises a lifting post cavity hydraulic control directional valve 12, a lifting post cavity electromagnetic directional valve 13 and a lifting post cavity high-pressure pipe 14, and the bottom lifting electro-hydraulic directional valve group comprises a bottom lifting post cavity hydraulic control directional valve 15, a lifting post cavity electromagnetic directional valve 16, a bottom lifting post cavity high-pressure pipe 17 and a bottom lifting post cavity high-pressure pipe 18.
The lift column cavity of the left upright post 3 is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through a lift column cavity high-pressure pipe 14 and a lift column cavity hydraulic control reversing valve 12, and can selectively conduct the high-pressure liquid supply pipe 4 or the liquid return pipe 5, the control port of the lift column cavity hydraulic control reversing valve 12 is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through a lift column cavity electromagnetic reversing valve 13, and can selectively conduct the high-pressure liquid supply pipe 4 or the liquid return pipe 5. The shrink chamber high-pressure pipe 10 of adjusting jack 1 at the bottom still communicates with each other its characterized in that with the lift post chamber high-pressure pipe of left pillar 3: the hydraulic control switching valve 20 comprises a contraction cavity hydraulic control reversing valve 201 and an extension cavity hydraulic control reversing valve 202, the contraction cavity hydraulic control reversing valve 201 and the extension cavity hydraulic control reversing valve 202 respectively comprise a control port A, a working port B, two switching ports C1 and C2 and a valve core D, and two channels 203 are arranged on the valve core D.
The contraction cavity hydraulic control reversing valve 201 is connected in series to the contraction cavity high-pressure pipe 10, a working port B of the contraction cavity hydraulic control reversing valve is communicated with the contraction cavity hydraulic control reversing valve 6 through the contraction cavity high-pressure pipe 10, one switching port C1 of the contraction cavity hydraulic control reversing valve is communicated with a contraction cavity of the bottom adjusting jack 1 through the contraction cavity high-pressure pipe 10, and the other switching port C2 of the contraction cavity hydraulic control reversing valve is communicated with a column descending cavity of the bottom lifting jack 2 through a high-pressure pipe 21 and a column lifting and descending cavity high-pressure pipe 17 of the bottom lifting jack 2.
The extension cavity hydraulic control reversing valve 202 is connected in series on an extension cavity high-pressure pipe 11, the working port of the extension cavity hydraulic control reversing valve is communicated with an extension cavity hydraulic control reversing valve 8 through the extension cavity high-pressure pipe 11, one switching port C1 of the extension cavity hydraulic control reversing valve is communicated with the extension cavity of the bottom adjusting jack 1 through the extension cavity high-pressure pipe 11, the other switching port C2 of the extension cavity hydraulic control reversing valve is communicated with the lifting column cavity of the bottom lifting jack 2 through a high-pressure pipe 22 and a bottom lifting column cavity high-pressure pipe 18 of the bottom lifting jack 2, after the contraction cavity hydraulic control reversing valve 201 and the working port of the extension cavity hydraulic control reversing valve 202 are connected in parallel, the contraction cavity hydraulic control reversing valve is communicated with the high-pressure liquid supply pipe 4 and the liquid return pipe 5 through the high-pressure pipe 23 and the bottom adjusting electromagnetic reversing valve, and the high-pressure liquid supply pipe 4 or the liquid return pipe 5 can be selectively communicated.
A pilot operated check valve 24 is further arranged between the bottom adjustment jack 1 and the pilot operated switching valve 20, and a safety valve 25 is further arranged between the pilot operated check valve 24 and the bottom adjustment jack 1, as shown in fig. 2.
The present invention includes, but is not limited to, the above embodiments, and any products according to the description of the claims fall within the protection scope of the present invention.
Claims (2)
1. A bottom adjusting jack and a bottom lifting jack combined liquid supply system for a hydraulic support comprises a bottom adjusting jack, a bottom lifting jack, a left upright post, a high-pressure liquid supply pipe and a liquid return pipe, wherein the left upright post, the bottom adjusting jack and the bottom lifting jack are respectively provided with a left upright post electro-hydraulic reversing valve group, a bottom adjusting electro-hydraulic reversing valve group and a bottom lifting reversing valve group; left stand electricity liquid switching-over valves includes rises post chamber liquid accuse switching-over valve and rises post chamber solenoid directional valve to be furnished with and rise post chamber high-pressure tube, lift end electricity liquid switching-over valves including lifting end and rise post chamber liquid accuse switching-over valve and lifting end and rise post chamber solenoid directional valve, and be furnished with and lift end and fall post chamber high-pressure tube, lift end and rise post chamber high-pressure tube, its characterized in that: the hydraulic control switching valve comprises a contraction cavity hydraulic control switching valve and an extension cavity hydraulic control switching valve, the contraction cavity hydraulic control switching valve and the extension cavity hydraulic control switching valve respectively comprise a control port, a working port, two switching ports and a valve core, two channels are arranged on the valve core,
the contraction cavity hydraulic control reversing valve is connected in series on the contraction cavity high-pressure pipe, the working port of the contraction cavity hydraulic control reversing valve is communicated with the contraction cavity hydraulic control reversing valve through the contraction cavity high-pressure pipe, one switching port of the contraction cavity hydraulic control reversing valve is communicated with the contraction cavity of the bottom adjusting jack through the contraction cavity high-pressure pipe, the other switching port of the contraction cavity hydraulic control reversing valve is communicated with the column descending cavity of the bottom lifting jack through a high-pressure pipe and the bottom lifting column descending cavity high-pressure pipe of the bottom lifting jack,
the hydraulic control reversing valve of the extension cavity is connected in series with the high-pressure pipe of the extension cavity, the working port of the hydraulic control reversing valve of the extension cavity is communicated with the hydraulic control reversing valve of the extension cavity through the high-pressure pipe of the extension cavity, one switching port of the hydraulic control reversing valve of the extension cavity is communicated with the extension cavity of the bottom adjusting jack through the high-pressure pipe, the high-pressure pipe of the bottom lifting column cavity of the bottom lifting jack is communicated with the column lifting cavity of the bottom lifting jack, and after the hydraulic control reversing valve of the contraction cavity and the working port of the hydraulic control reversing valve of the extension cavity are connected in parallel, the hydraulic control reversing valve of the contraction cavity is communicated with the high-pressure liquid supply pipe and the liquid return pipe through the high-pressure pipe and the bottom adjusting electromagnetic reversing valve, and the high-pressure liquid supply pipe or the liquid return pipe can be switched on.
2. The bottom adjusting jack and the bottom lifting jack combined liquid supply system for the hydraulic support as claimed in claim 1, wherein: and a hydraulic control one-way valve is also arranged between the bottom adjusting jack and the hydraulic control switching valve, and a safety valve is also arranged between the hydraulic control one-way valve and the bottom adjusting jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221111046.7U CN217233949U (en) | 2022-05-09 | 2022-05-09 | Bottom adjusting jack and bottom lifting jack combined liquid supply system for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221111046.7U CN217233949U (en) | 2022-05-09 | 2022-05-09 | Bottom adjusting jack and bottom lifting jack combined liquid supply system for hydraulic support |
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| Publication Number | Publication Date |
|---|---|
| CN217233949U true CN217233949U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221111046.7U Active CN217233949U (en) | 2022-05-09 | 2022-05-09 | Bottom adjusting jack and bottom lifting jack combined liquid supply system for hydraulic support |
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| Country | Link |
|---|---|
| CN (1) | CN217233949U (en) |
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2022
- 2022-05-09 CN CN202221111046.7U patent/CN217233949U/en active Active
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