CN203347820U - Hydraulic system for testing hydraulic support balance mechanism - Google Patents
Hydraulic system for testing hydraulic support balance mechanism Download PDFInfo
- Publication number
- CN203347820U CN203347820U CN 201320381847 CN201320381847U CN203347820U CN 203347820 U CN203347820 U CN 203347820U CN 201320381847 CN201320381847 CN 201320381847 CN 201320381847 U CN201320381847 U CN 201320381847U CN 203347820 U CN203347820 U CN 203347820U
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- hydraulic support
- balance
- piston rod
- hydraulic
- rod end
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Abstract
The utility model discloses a hydraulic system for testing a hydraulic support balance mechanism. A hydraulic support comprises a top beam, a shield beam, a stand column and a base. A balance jack is connected between the top beam and the shield beam, a front connecting rod and a rear connecting rod are connected between the shield beam and the base, a piston rod cavity and a piston rod of the balance jack are provided with liquid supplementing openings and liquid drainage openings, the liquid drainage opening of the piston rod cavity and the liquid drainage opening of the piston rod are respectively connected with a safety valve, and the liquid supplementing opening of the piston rod cavity and the liquid supplementing opening of the piston rod are connected with a hydraulic pipeline of the stand column through a balance bidirectional lock. The hydraulic support can be descended through movement of the stand column, thus the whole balance mechanism is tested, and the hydraulic system is simple, practical and good in testing effect.
Description
Technical field
The utility model relates to a kind of experimental technique of hydraulic support balanced controls, relates in particular to a kind of hydraulic support balanced controls experimental liquid pressing system.
Background technology
At present, in " the GB_25974.1-2010_ coal-mine hydraulic support _ part 1: general technical specifications " of domestic issue to the detection on coal-mine hydraulic support not to the experimental project of balanced controls.Although the test item of this respect is abroad arranged, experimental facilities is complicated, effect is undesirable.
The utility model content
The purpose of this utility model is to provide a kind of simple, practical, effective hydraulic support balanced controls experimental liquid pressing system.
The purpose of this utility model is achieved through the following technical solutions:
Hydraulic support balanced controls experimental liquid pressing system of the present utility model, described hydraulic support comprises back timber, caving shield, column, base, be connected with balance jack between described back timber and caving shield, be connected with front rod and back link between described caving shield and described base, the rod end chamber of described balance jack and plunger shaft are equipped with fluid infusion mouth and leakage hole.
The technical scheme provided by above-mentioned the utility model can be found out, the hydraulic support balanced controls experimental liquid pressing system that the utility model embodiment provides, because rod end chamber and the plunger shaft of balance jack is equipped with fluid infusion mouth and leakage hole, can make by the action of column the hydraulic support lifting, and rod end chamber and the plunger shaft of balance jack are carried out to fluid infusion and drainage, thereby whole balanced controls are tested, simple, practical, experiment effect is good.
The accompanying drawing explanation
The fluid pressure line schematic diagram of the hydraulic support balanced controls experimental liquid pressing system that Fig. 1 provides for the utility model embodiment.
In figure:
3, column, 7, balance jack, 8, the balance reversible lock, 9, the rod end chamber safety valve, 10, the plunger shaft safety valve.
The specific embodiment
Below will be described in further detail the utility model embodiment.
Hydraulic support balanced controls experimental liquid pressing system of the present utility model, preferably the specific embodiment is as shown in Figure 1 for it:
Described hydraulic support comprises back timber, caving shield, column, base, be connected with balance jack between described back timber and caving shield, be connected with front rod and back link between described caving shield and described base, the rod end chamber of described balance jack and plunger shaft are equipped with fluid infusion mouth and leakage hole.
The leakage hole of described rod end chamber and plunger shaft is connected with respectively safety valve.
The fluid infusion mouth of described rod end chamber and plunger shaft is connected with the fluid pressure line of described column by the balance reversible lock.
Application the utility model, can make by the action of described column the hydraulic support lifting, thereby whole balanced controls are tested.
When rising column and falling column, balance respectively plunger shaft and the rod end chamber fluid infusion of jack: when rising column, the rod end chamber supercharging of balance jack, rod end chamber safety valve drainage, system is to the plunger shaft fluid infusion, balance jack is stretched out, otherwise, while falling column, system balances the rod end chamber fluid infusion of jack, the plunger shaft supercharging of balance jack, the plunger shaft safety valve is opened, and balance jack is shunk.Rod end chamber and the plunger shaft of the lifting meeting compression balance jack of support, open the safety valve of rod end chamber and plunger shaft, and simultaneously, system is constantly given rod end chamber and plunger shaft fluid infusion, and process of the test is simple, effective.
The utility model has been filled up the blank of this area about the balanced controls test, has effectively verified the intensity of balanced controls and the sealing of balance jack etc., has improved product quality.
The above; it is only the preferably specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in 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 liquid pressing system, described hydraulic support comprises back timber, caving shield, column, base, be connected with balance jack between described back timber and caving shield, be connected with front rod and back link between described caving shield and described base, it is characterized in that, the rod end chamber of described balance jack and plunger shaft are equipped with fluid infusion mouth and leakage hole.
2. hydraulic support balanced controls experimental liquid pressing system according to claim 1, is characterized in that, the leakage hole of described rod end chamber and plunger shaft is connected with respectively safety valve.
3. hydraulic support balanced controls experimental liquid pressing system according to claim 1 and 2, is characterized in that, the fluid infusion mouth of described rod end chamber and plunger shaft is connected with the fluid pressure line of described column by the balance reversible lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381847 CN203347820U (en) | 2013-06-28 | 2013-06-28 | Hydraulic system for testing hydraulic support balance mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381847 CN203347820U (en) | 2013-06-28 | 2013-06-28 | Hydraulic system for testing hydraulic support balance mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203347820U true CN203347820U (en) | 2013-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320381847 Expired - Fee Related CN203347820U (en) | 2013-06-28 | 2013-06-28 | Hydraulic system for testing hydraulic support balance mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203347820U (en) |
Cited By (1)
| 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 |
-
2013
- 2013-06-28 CN CN 201320381847 patent/CN203347820U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160628 |