CN104533491A - Hydraulic support balancing mechanism testing device and method - Google Patents
Hydraulic support balancing mechanism testing device and method Download PDFInfo
- Publication number
- CN104533491A CN104533491A CN201410835752.XA CN201410835752A CN104533491A CN 104533491 A CN104533491 A CN 104533491A CN 201410835752 A CN201410835752 A CN 201410835752A CN 104533491 A CN104533491 A CN 104533491A
- Authority
- CN
- China
- Prior art keywords
- hydraulic support
- caving shield
- balance jack
- balance
- balanced controls
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000002474 experimental method Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 7
- 230000002441 reversible effect Effects 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 5
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 2
- 238000001802 infusion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a hydraulic support balancing mechanism testing device and method. A hydraulic support comprises a top beam, a caving shield, a base, a stand column, a front connecting rod, a rear connecting rod and a balancing jack. The front connecting rod on one side of the hydraulic support is detached first, and the hinge point of the upper end of the rear connecting rod on the same side and the caving shield is assembled at the hinge point of the upper end of the existing front connecting rod and the caving shield after being detached so that the hinge points can be fixed to each other; then, the stand column is lifted first so that the top beam can be lifted upwards, a rod cavity of the balance jack is pulled out by at least 30 mm till a safety valve is unloaded, then the stand column is lowered so that the head of the top beam can be lowered, and a piston cavity of the balance jack is pressed by at least 30 mm till the safety valve is unloaded; a cycle is completed after the stand column rises and falls one time, and at least 4000 cycles are completed. The telescopic amount of the balance jack is controlled through time, and the experiment shows that the average time for extending by 30 mm is set as the liquid supply time. The strength of a balance mechanism can be well verified, and downhole accidents are reduced.
Description
Technical field
The present invention relates to the balanced controls detection technique on a kind of coal-mine hydraulic support, particularly relate to a kind of hydraulic support balanced controls experimental rig and method.
Background technology
The balanced controls of two column protected type hydraulic support play vital effect in two column protected type hydraulic support.Along with the wideling popularize and applying at high-productivity faces of two column protected type high-end hydraulic support, test for balanced controls is also more and more important, does not have this project in " the GB_25974.1-2010_ coal-mine hydraulic support _ part 1: general technical specifications " of current domestic issue to the balanced controls test item on coal-mine hydraulic support.
In prior art, there is no good research technique for balanced controls yet.
Summary of the invention
The object of this invention is to provide a kind of experiment effect is good, safety is high hydraulic support balanced controls experimental rig and method.
The object of the invention is to be achieved through the following technical solutions:
Hydraulic support balanced controls experimental rig of the present invention, hydraulic support comprises back timber, caving shield, base, column, the both sides of hydraulic support are respectively equipped with front rod and back link, the top and bottom of described front rod and back link respectively with described caving shield and base hinged, balance jack is provided with between described back timber and caving shield, the caving shield at the rear portion of described hydraulic support, front rod, back link, interfix between base, described balance jack is connected with balance reversible lock, described balance reversible lock comprises two one way valves, the inlet of each one way valve is connected with the fluid apertures mouth of another one way valve respectively, the liquid outlet of two one way valves is connected with the plunger shaft of described balance jack and bar chamber respectively, the plunger shaft of described balance jack is also connected with pressurized cylinder, the bar chamber of described balance jack is also connected with pumping plant.
Above-mentioned hydraulic support balanced controls experimental rig of the present invention realizes the method for hydraulic support balanced controls test, comprises step:
First, interfix between the caving shield at the rear portion of described hydraulic support, front rod, back link, base;
Then, first rising column makes back timber face upward, balance jack bar chamber is pulled to safety valve and unloads and be drawn out at least 30mm, falling column again makes back timber bow, balance jack plunger shaft is depressed into safety valve unloading and is pushed back at least 30mm, column up-down is once a circulation, altogether circulation at least 4000 times.
As seen from the above technical solution provided by the invention, the hydraulic support balanced controls experimental rig that the embodiment of the present invention provides and method, utilize the characteristic of hydraulic support quadric chain, make caving shield and front-rear linkage mechanism effectively spacing, by the action of column, support is elevated, thus whole balanced controls are tested.This test can verify the intensity of balanced controls preferably, reduces down-hole accident.
Accompanying drawing explanation
The structural representation of the hydraulic support balanced controls experimental rig that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation that the rear portion of hydraulic support in the embodiment of the present invention interfixes.
In figure: 1, base, 2, back link, 3, front rod, 4, caving shield, 5, column, 6, balance reversible lock, 7, balance jack, 8, pump station pressure sensor, 9, pressurized cylinder pressure sensor.
Detailed description of the invention
To be described in further detail the embodiment of the present invention below.
Hydraulic support balanced controls experimental rig of the present invention, its preferably detailed description of the invention be:
Hydraulic support comprises back timber, caving shield, base, column, the both sides of hydraulic support are respectively equipped with front rod and back link, the top and bottom of described front rod and back link respectively with described caving shield and base hinged, balance jack is provided with between described back timber and caving shield, the caving shield at the rear portion of described hydraulic support, front rod, back link, interfix between base, described balance jack is connected with balance reversible lock, described balance reversible lock comprises two one way valves, the inlet of each one way valve is connected with the fluid apertures mouth of another one way valve respectively, the liquid outlet of two one way valves is connected with the plunger shaft of described balance jack and bar chamber respectively, the plunger shaft of described balance jack is also connected with pressurized cylinder, the bar chamber of described balance jack is also connected with pumping plant.
Described balance jack and the oil pipe between described pressurized cylinder and pumping plant are respectively equipped with pressurized cylinder pressure sensor and pump station pressure sensor.
The structure interfixed between the caving shield at the rear portion of described hydraulic support, front rod, back link, base is:
The front rod of hydraulic support side is removed, after being removed by the pin joint of the upper end of this rear flank connecting rod and caving shield, is loaded on the upper end of former front rod and the pin joint position of caving shield.
Above-mentioned hydraulic support balanced controls experimental rig of the present invention realize hydraulic support balanced controls test method, its preferably detailed description of the invention be:
Comprise step:
First, interfix between the caving shield at the rear portion of described hydraulic support, front rod, back link, base;
Then, first rising column makes back timber face upward, balance jack bar chamber is pulled to safety valve and unloads and be drawn out at least 30mm, falling column again makes back timber bow, balance jack plunger shaft is depressed into safety valve unloading and is pushed back at least 30mm, column up-down is once a circulation, altogether circulation at least 4000 times.
Utilize the stroke of balance jack described in time controling, show that the average time of stretching out 30mm sets the time of feed flow by experiment.
Hydraulic support balanced controls experimental rig of the present invention and method, utilize the characteristic of hydraulic support quadric chain, make caving shield and front-rear linkage mechanism effectively spacing, by the action of column, support is elevated, thus whole balanced controls is tested.This test can verify the intensity of balanced controls preferably, reduces down-hole accident.
Specific embodiment:
As shown in Figure 1 and Figure 2, support rear portion is suitably fixed, and first rises column and back timber is faced upward, and balance jack bar chamber is pulled to safety valve and unloads and be drawn out at least 30mm, falling column again makes back timber bow, and balance jack plunger shaft is depressed into safety valve unloading and is pushed back at least 30mm.Column up-down is once a circulation, circulates 4000 times altogether.
According to testing counter pipe-line system limitation, testing counter without gap sensors, consider the stroke utilizing time controling balance jack, repeatedly several times first, the time of feed flow is set according to the average time of stretching out 30mm, 4 supply openings are controlled as: topping up--and post falls, supercharging--setting prop, just support and fall post and balance upper and lower cavity fluid infusion respectively, while setting prop, the supercharging of balance jack epicoele, safety valve drainage, system is to cavity of resorption fluid infusion, balance jack is stretched out, otherwise, when falling post, system balances the fluid infusion of jack epicoele, the supercharging of balance jack cavity of resorption, cavity of resorption safety valve is opened, balance contraction.
The lifting of support can compress balance jack upper and lower cavity, and the safety valve of upper and lower cavity is opened, and system constantly gives upper and lower cavity fluid infusion, and process of the test obtains user certainly.
The beneficial effect that technical solution of the present invention is brought:
Fill up the domestic and international blank about balanced controls test;
Effectively can verify the intensity of balanced controls and the sealing etc. of balance jack, improve the quality of products;
Add the confidence level of users at home and abroad to Products;
Make both at home and abroad to reach a new height to the understanding and cognition of hydraulic support balanced controls.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. a hydraulic support balanced controls experimental rig, hydraulic support comprises back timber, caving shield, base, column, the both sides of hydraulic support are respectively equipped with front rod and back link, the top and bottom of described front rod and back link respectively with described caving shield and base hinged, balance jack is provided with between described back timber and caving shield, it is characterized in that, the caving shield at the rear portion of described hydraulic support, front rod, back link, interfix between base, described balance jack is connected with balance reversible lock, described balance reversible lock comprises two one way valves, the inlet of each one way valve is connected with the fluid apertures mouth of another one way valve respectively, the liquid outlet of two one way valves is connected with the plunger shaft of described balance jack and bar chamber respectively, the plunger shaft of described balance jack is also connected with pressurized cylinder, the bar chamber of described balance jack is also connected with pumping plant.
2. hydraulic support balanced controls experimental rig according to claim 1, is characterized in that, described balance jack and the oil pipe between described pressurized cylinder and pumping plant are respectively equipped with pressurized cylinder pressure sensor and pump station pressure sensor.
3. hydraulic support balanced controls experimental rig according to claim 2, is characterized in that, the structure interfixed between the caving shield at the rear portion of described hydraulic support, front rod, back link, base is:
The front rod of hydraulic support side is removed, after being removed by the pin joint of the upper end of this rear flank connecting rod and caving shield, is loaded on the upper end of former front rod and the pin joint position of caving shield.
4. the hydraulic support balanced controls experimental rig described in claim 1,2 or 3 realizes a method for hydraulic support balanced controls test, it is characterized in that, comprises step:
First, interfix between the caving shield at the rear portion of described hydraulic support, front rod, back link, base;
Then, first rising column makes back timber face upward, balance jack bar chamber is pulled to safety valve and unloads and be drawn out at least 30mm, falling column again makes back timber bow, balance jack plunger shaft is depressed into safety valve unloading and is pushed back at least 30mm, column up-down is once a circulation, altogether circulation at least 4000 times.
5. hydraulic support balanced controls test method according to claim 4, is characterized in that, utilize the stroke of balance jack described in time controling, show that the average time of stretching out 30mm sets the time of feed flow by experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835752.XA CN104533491A (en) | 2014-12-26 | 2014-12-26 | Hydraulic support balancing mechanism testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835752.XA CN104533491A (en) | 2014-12-26 | 2014-12-26 | Hydraulic support balancing mechanism testing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104533491A true CN104533491A (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410835752.XA Pending CN104533491A (en) | 2014-12-26 | 2014-12-26 | Hydraulic support balancing mechanism testing device and method |
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|---|---|
| CN (1) | CN104533491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182767A (en) * | 2022-06-30 | 2022-10-14 | 郑州煤矿机械集团股份有限公司 | Quick dismounting and mounting method for hydraulic support balance jack |
Citations (6)
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|---|---|---|---|---|
| CN103308302A (en) * | 2013-06-28 | 2013-09-18 | 中煤北京煤矿机械有限责任公司 | Test method for hydraulic support balancing mechanism |
| CN203347820U (en) * | 2013-06-28 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Hydraulic system for testing hydraulic support balance mechanism |
| CN203347821U (en) * | 2013-06-28 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Limiting device of hydraulic support balance mechanism |
| CN203347815U (en) * | 2013-06-28 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Testing apparatus of hydraulic support balance mechanism |
| CN203347817U (en) * | 2013-05-31 | 2013-12-18 | 巨隆集团芜湖兴隆液压有限公司 | Middle flow balance reversible lock |
| CN204457832U (en) * | 2014-12-26 | 2015-07-08 | 中煤北京煤矿机械有限责任公司 | Hydraulic support balanced controls experimental rig |
-
2014
- 2014-12-26 CN CN201410835752.XA patent/CN104533491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203347817U (en) * | 2013-05-31 | 2013-12-18 | 巨隆集团芜湖兴隆液压有限公司 | Middle flow balance reversible lock |
| CN103308302A (en) * | 2013-06-28 | 2013-09-18 | 中煤北京煤矿机械有限责任公司 | Test method for hydraulic support balancing mechanism |
| CN203347820U (en) * | 2013-06-28 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Hydraulic system for testing hydraulic support balance mechanism |
| CN203347821U (en) * | 2013-06-28 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Limiting device of hydraulic support balance mechanism |
| CN203347815U (en) * | 2013-06-28 | 2013-12-18 | 中煤北京煤矿机械有限责任公司 | Testing apparatus of hydraulic support balance mechanism |
| CN204457832U (en) * | 2014-12-26 | 2015-07-08 | 中煤北京煤矿机械有限责任公司 | Hydraulic support balanced controls experimental rig |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182767A (en) * | 2022-06-30 | 2022-10-14 | 郑州煤矿机械集团股份有限公司 | Quick dismounting and mounting method for hydraulic support balance jack |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |