CN204457832U - Hydraulic support balanced controls experimental rig - Google Patents
Hydraulic support balanced controls experimental rig Download PDFInfo
- Publication number
- CN204457832U CN204457832U CN201420850325.4U CN201420850325U CN204457832U CN 204457832 U CN204457832 U CN 204457832U CN 201420850325 U CN201420850325 U CN 201420850325U CN 204457832 U CN204457832 U CN 204457832U
- Authority
- CN
- China
- Prior art keywords
- hydraulic support
- caving shield
- front rod
- balance jack
- 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.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of hydraulic support balanced controls experimental rig, hydraulic support comprises back timber, caving shield, base, column, front rod, back link, balance jack.First the front rod of hydraulic support side is removed, be loaded on the upper end of former front rod and the pin joint position of caving shield after being removed by the pin joint of the upper end of this rear flank connecting rod and caving shield, make it interfix; 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, then falls column back timber is bowed, 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, 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.The intensity of balanced controls can be verified preferably, reduce down-hole accident.
Description
Technical field
The utility model relates to the balanced controls detection technique on a kind of coal-mine hydraulic support, particularly relates to a kind of hydraulic support balanced controls experimental rig.
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.
Utility model content
The purpose of this utility model is to provide the hydraulic support balanced controls experimental rig that a kind of experiment effect is good, safety is high.
The purpose of this utility model is achieved through the following technical solutions:
Hydraulic support balanced controls experimental rig of the present utility model, 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.
The technical scheme provided as can be seen from above-mentioned the utility model, the hydraulic support balanced controls experimental rig that the utility model embodiment provides, 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 utility model embodiment;
Fig. 2 is the structural representation that the rear portion of hydraulic support in the utility model embodiment 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 utility model embodiment below.
Hydraulic support balanced controls experimental rig of the present utility model, 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.
Hydraulic support balanced controls experimental rig of the present utility model 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.
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 utility model, utilizes 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 solutions of the utility model are 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 utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (3)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850325.4U CN204457832U (en) | 2014-12-26 | 2014-12-26 | Hydraulic support balanced controls experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850325.4U CN204457832U (en) | 2014-12-26 | 2014-12-26 | Hydraulic support balanced controls experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457832U true CN204457832U (en) | 2015-07-08 |
Family
ID=53664734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420850325.4U Expired - Fee Related CN204457832U (en) | 2014-12-26 | 2014-12-26 | Hydraulic support balanced controls experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457832U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533491A (en) * | 2014-12-26 | 2015-04-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support balancing mechanism testing device and method |
| CN107939430A (en) * | 2017-11-30 | 2018-04-20 | 中煤北京煤矿机械有限责任公司 | Two column hydraulic support of dibit balance jack |
| 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 |
-
2014
- 2014-12-26 CN CN201420850325.4U patent/CN204457832U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533491A (en) * | 2014-12-26 | 2015-04-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support balancing mechanism testing device and method |
| CN107939430A (en) * | 2017-11-30 | 2018-04-20 | 中煤北京煤矿机械有限责任公司 | Two column hydraulic support of dibit balance jack |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20161226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |