CN203702211U - Hydraulic shield support and automatic top beam adjusting device for hydraulic shield support - Google Patents
Hydraulic shield support and automatic top beam adjusting device for hydraulic shield support Download PDFInfo
- Publication number
- CN203702211U CN203702211U CN201420008031.7U CN201420008031U CN203702211U CN 203702211 U CN203702211 U CN 203702211U CN 201420008031 U CN201420008031 U CN 201420008031U CN 203702211 U CN203702211 U CN 203702211U
- Authority
- CN
- China
- Prior art keywords
- pressure
- sensing cell
- back timber
- pressure sensing
- checking device
- 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
Links
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 208000002925 dental caries Diseases 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a hydraulic shield support and an automatic top beam adjusting device for the hydraulic shield support. The automatic top beam adjusting device comprises a controller, a first pressure detection unit and a second pressure detection unit, wherein the first pressure detection unit and the second pressure detection unit are connected with the controller, the first pressure detection unit is used for detecting the pressure of at least one cavity or the pressure difference between two cavities, the second pressure detection unit is used for detecting the pressure of a lower cavity of a stand column, and the controller is used for adjusting stretching and contraction of a balance oil cylinder when a detection value obtained by the first pressure detection unit is larger than a first preset threshold, a detection value obtained by the second pressure detection unit is larger than a second threshold, and a stand column ascent control instruction is given out. According to the hydraulic shield support and the automatic top beam adjusting device for the hydraulic shield support, when the hydraulic shield support carries out roof contact, servo adjustment of a top beam is achieved; the situation of stress of the balance oil cylinder can be improved when the hydraulic shield support carries out roof contact, and the service life of a balance jack and the service life of a balance jack safety valve are prolonged.
Description
Technical field
The utility model relates to coal mine fully-mechanized mining field, particularly a kind of hydraulic shield support and back timber self-checking device thereof.
Background technology
At present, the hydraulic shield support balancing cylinder hydraulic system that coal mine fully-mechanized mining working uses, adopts main control valve to coordinate hydraulic control reversible lock to complete the control to balancing cylinder action conventionally.
Fit tightly with roof in order to realize set cap, guarantee hydraulic support, at normal operating attitude lower support top board, is managed roof better, needs manually to adjust in time the stroke of balancing cylinder when a bridge joint pushes up as far as possible.
When setting prop, back timber adjustment certainly will cause beam-ends first to touch top board not in time.Because balance hoisting jack bidirectional lock has locked the length of balance jack, make back timber, caving shield and balance jack three become rigid triangle structure.Along with the increase balance jack of beam-ends power is born very large active force, cause balancing cylinder damage or safety valve frequently to open.The normal operating attitude of application life, hydraulic support of balance jack safety valve, the managerial skills of top board are had a strong impact on.
Utility model content
In view of this, the utility model proposes a kind of hydraulic shield support and back timber self-checking device thereof, with in the time that hydraulic supporting bridge joint pushes up, realize the follow-up adjustment of back timber, and, improve balancing cylinder stressing conditions while propping up bridge joint top, extend the application life of balance jack and balance jack safety valve.
First aspect, the utility model discloses a kind of back timber self-checking device, for the adjusting of hydraulic shield support back timber, described hydraulic shield support comprises column, balance jack and balancing cylinder thereof, described balancing cylinder comprises two cavitys, this back timber self-checking device comprises: controller, and the first pressure sensing cell and the second pressure sensing cell that are connected with described controller; Described the first pressure sensing cell is for detection of the described pressure of cavity described at least one, or the pressure differential of two cavitys; Described the second pressure sensing cell is for detection of the lower cavity pressure of column; Described controller is greater than the first predetermined threshold for the detected value obtaining at described the first pressure sensing cell, the detected value that described the second pressure sensing cell obtains is greater than Second Threshold, and, there is column to rise in the situation that control instruction sends, regulate the flexible of described balancing cylinder, make hydraulic support top beam carry out follow-up adjustment.
Further, in above-mentioned back timber self-checking device, described the first pressure sensing cell is two pressure sensors, is respectively used to measure the pressure of two cavitys of described balancing cylinder.
Further, in above-mentioned back timber self-checking device, described the first pressure sensing cell is differential pressure pickup, for measuring the pressure differential of two cavitys of described balancing cylinder.
Further, in above-mentioned back timber self-checking device, described the second pressure sensing cell is pressure sensor.
Further, in above-mentioned back timber self-checking device, described controller is provided with communication interface; Described communication interface is connected with at least one electromagnetic valve driver, described electromagnetic valve driver connected electromagnetic valve; Described the first pressure sensing cell and described the second pressure sensing cell by described electromagnetic valve driver by the pressure signal transmission detecting to described controller; The action of electromagnetic valve described in the information-driven that described controller transmits according to described the first pressure sensing cell and described the second pressure sensing cell.
Further, in above-mentioned back timber self-checking device, described communication interface is connected with three electromagnetic valve drivers.
Further, in above-mentioned back timber self-checking device, also comprise display; Described display is connected with described controller signals.
Further, in above-mentioned back timber self-checking device, also comprise keyboard processing unit; Described keyboard processing unit is connected with described controller.
Further, in above-mentioned back timber self-checking device, described keyboard processing unit is provided with: be stretched flat weighing apparatus for realizing support, be closed flat weighing apparatus, balance is unsteady and forbids the button of balance adjustment.
In the utility model, two chamber hydraulic circuits of balance jack balancing cylinder and the cavity of resorption setting pressure detecting unit of column, be greater than predetermined value and have column to rise control instruction send in the situation that at two pressure sensing cell detected values, regulate the flexible of described balancing cylinder, and then realize the follow-up adjustment of hydraulic support top beam.With respect to prior art, tool has the following advantages:
The first, when hydraulic supporting bridge joint pushes up, back timber follow-up adjustment, makes back timber and top board full engagement, improves the managerial skills of top board.
The second, improve balancing cylinder stressing conditions while propping up bridge joint top, effectively protect balance jack, avoid balance safety-valve frequently to open phenomenon, extend the application life of balance jack and balance jack safety valve.
Second aspect, the invention also discloses a kind of hydraulic shield support, is provided with above-mentioned back timber self-checking device.Owing to back timber self-checking device being described, therefore do not repeat them here.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structure principle chart of the utility model hydraulic shield support and back timber self-checking device preferred embodiment thereof.
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
With reference to Fig. 1.Fig. 1 is the structure principle chart of the utility model hydraulic shield support and back timber self-checking device preferred embodiment thereof.
The present embodiment back timber self-checking device is for the adjusting of hydraulic shield support back timber, and hydraulic shield support comprises column, balance jack and balancing cylinder thereof, and balancing cylinder comprises two cavitys.
This back timber self-checking device also comprises controller, and the first pressure sensing cell being connected with controller and the second pressure sensing cell; The first pressure sensing cell is for detection of the pressure of at least one cavity, or the pressure differential of two cavitys.The second pressure sensing cell is for detection of the lower cavity pressure of column; Controller is greater than the first predetermined threshold for the detected value obtaining at the first pressure sensing cell, the detected value that the second pressure sensing cell obtains is greater than Second Threshold, and, there is column to rise in the situation that control instruction sends, stretching of adjustment oil cylinder, makes hydraulic support top beam carry out follow-up adjustment.
Wherein, first threshold or Second Threshold are all artificially to set according to actual operating mode and experience.
More specifically, the first pressure sensing cell can comprise two pressure sensors, is arranged at respectively the position that conveniently obtains two chamber pressures of balancing cylinder, and the utility model does not limit this.By the force value of two determination of pressure sensor, determine the pressure reduction of two cavitys.
Alternatively, the first pressure sensing cell can be a differential pressure pickup, poor as Rule of judgment according to two cavity pressures.The position of this differential pressure pickup does not limit, as long as convenient, liquid in two cavitys is introduced to differential pressure pickup, carries out pressure reduction and measures.
Alternatively, the first pressure sensing cell even can only include a pressure sensor, for measuring the pressure in one of them balancing cylinder cavity.That is to say, as long as the pressure of one of them cavity exceedes predetermined threshold value, and the lower cavity pressure of column also exceedes predetermined threshold value, just need to carry out the telescopic adjustment of balancing cylinder.
Certainly, the second pressure sensing cell is arranged at the position of cavity pressure under the column for being convenient for measuring hydraulic support, can be a pressure sensor.
In the present embodiment, controller is by pressure and the setting prop information of column cavity of resorption, and bridge joint top situation is propped up in judgement; By the pressure condition of at least one cavity in balancing cylinder, adjustment oil cylinder flexible, and then realize the follow-up adjustment of hydraulic support top beam.With respect to prior art, tool has the following advantages:
The first, when hydraulic supporting bridge joint pushes up, back timber follow-up adjustment, makes back timber and top board full engagement, improves the managerial skills of top board.
The second, improve balancing cylinder stressing conditions while propping up bridge joint top, effectively protect balance jack, avoid balance safety-valve frequently to open phenomenon, extend the application life of balance jack and balance jack safety valve.
In the present embodiment, controller is also connected with communication interface; Communication interface is connected with at least one electromagnetic valve driver, electromagnetic valve driver connected electromagnetic valve; The first pressure sensing cell and the second pressure sensing cell by electromagnetic valve driver by detect pressure signal transmission to controller.Each controller has three electromagnetic valve driver interfaces, can connect at most three electromagnetic valve drivers, is equivalent to three supports and shares a controller.Electromagnetic valve is hydraulic actuator, and the control command that controller sends is carried out control command through electromagnetic valve driver power amplification rear drive electromagnetic valve, completes the control to support.
Referring again to Fig. 1, back timber self-checking device also comprises display; Display is connected with controller signals.Display completes the demonstration of hydraulic support, controller state information, as column pressure, compensating cylinder pressure, passing stroke etc.The better monitoring state to hydraulic shield support.
Back timber self-checking device also comprises keyboard processing unit; Keyboard processing unit is connected with controller.Keyboard processing unit is the man-machine interface of electrohydraulic controller, completes the operation to electrohydraulic controller by keyboard processing unit, comprises setting parameter, support action control etc.
The present embodiment keyboard processing unit is also provided with: support is stretched flat weighing apparatus, is closed flat weighing apparatus, balance is unsteady and forbids the button of balance adjustment.These buttons are the existing button of keyboard, without increasing new button.By the mode of software, program curing in controller, the achieved function of some button of the existing keyboard of soft setting.
; in controller by the mode of setting parameter; when bridge joint top is set, be stretched flat weighing apparatus, be closed flat weighing apparatus, balance floats or forbids the force value that balance adjustment function and float function are opened, and be stretched flat weighing apparatus when a bridge joint is pushed up, be closed flat weighing apparatus, balance is unsteady or forbids that balance adjustment function is associated with the button on keyboard processing unit.And opening pressure, by software set, is adjusted according to work plane condition free.
Can find out, this enforcement is except having above-mentioned advantage, and also tool has the following advantages:
The first, without changing hydraulic system element and structure, guarantee the stability of existing system;
The second, back timber automatic regulation function is opened or is closed by software, and easy to use, debugging flexibly.
Second aspect, the invention also discloses a kind of hydraulic shield support, is provided with above-mentioned back timber self-checking device.Owing to back timber self-checking device being described, therefore do not repeat them here.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a back timber self-checking device, for the adjusting of hydraulic shield support back timber, described hydraulic shield support comprises column, balance jack and balancing cylinder thereof, and described balancing cylinder comprises two cavitys, it is characterized in that, this back timber self-checking device also comprises:
Controller, and the first pressure sensing cell and the second pressure sensing cell that are connected with described controller;
Described the first pressure sensing cell is for detection of the described pressure of cavity described at least one, or the pressure differential of two cavitys;
Described the second pressure sensing cell is for detection of the lower cavity pressure of column;
Described controller is greater than the first predetermined threshold for the detected value obtaining at described the first pressure sensing cell, the detected value that described the second pressure sensing cell obtains is greater than Second Threshold, and, there is column to rise in the situation that control instruction sends, regulate the flexible of described balancing cylinder, make hydraulic support top beam carry out follow-up adjustment.
2. back timber self-checking device according to claim 1, is characterized in that,
Described the first pressure sensing cell is two pressure sensors, is respectively used to measure the pressure of two cavitys of described balancing cylinder.
3. back timber self-checking device according to claim 1, is characterized in that,
Described the first pressure sensing cell is differential pressure pickup, for measuring the pressure differential of two cavitys of described balancing cylinder.
4. back timber self-checking device according to claim 1, is characterized in that,
Described the second pressure sensing cell is pressure sensor.
5. back timber self-checking device according to claim 1, is characterized in that,
Described controller is provided with communication interface;
Described communication interface is connected with at least one electromagnetic valve driver, described electromagnetic valve driver connected electromagnetic valve;
Described the first pressure sensing cell and described the second pressure sensing cell by described electromagnetic valve driver by the pressure signal transmission detecting to described controller;
The action of electromagnetic valve described in the information-driven that described controller transmits according to described the first pressure sensing cell and described the second pressure sensing cell.
6. back timber self-checking device according to claim 5, is characterized in that,
Described communication interface is connected with three electromagnetic valve drivers.
7. back timber self-checking device according to claim 1, is characterized in that,
Also comprise display;
Described display is connected with described controller signals.
8. back timber self-checking device according to claim 1, is characterized in that,
Also comprise keyboard processing unit;
Described keyboard processing unit is connected with described controller.
9. back timber self-checking device according to claim 8, is characterized in that,
Described keyboard processing unit is provided with:
Be stretched flat weighing apparatus for realizing support, be closed flat weighing apparatus, balance is unsteady and forbids the button of balance adjustment.
10. a hydraulic shield support, is characterized in that, is provided with back timber self-checking device as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008031.7U CN203702211U (en) | 2014-01-06 | 2014-01-06 | Hydraulic shield support and automatic top beam adjusting device for hydraulic shield support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008031.7U CN203702211U (en) | 2014-01-06 | 2014-01-06 | Hydraulic shield support and automatic top beam adjusting device for hydraulic shield support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702211U true CN203702211U (en) | 2014-07-09 |
Family
ID=51052666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420008031.7U Expired - Fee Related CN203702211U (en) | 2014-01-06 | 2014-01-06 | Hydraulic shield support and automatic top beam adjusting device for hydraulic shield support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012665A (en) * | 2020-08-13 | 2020-12-01 | 中国煤炭科工集团太原研究院有限公司 | Full-hydraulic automatic roof connecting device and method for intelligent anchor rod drill frame |
-
2014
- 2014-01-06 CN CN201420008031.7U patent/CN203702211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012665A (en) * | 2020-08-13 | 2020-12-01 | 中国煤炭科工集团太原研究院有限公司 | Full-hydraulic automatic roof connecting device and method for intelligent anchor rod drill frame |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201276156Y (en) | Vehicle mounted automatic leveling system | |
| RU2664030C1 (en) | Device and method for definition and protection of crane telescopic hydraulic cylinder | |
| CN203472452U (en) | Self-walking building machinery | |
| CN204512069U (en) | The test bed hydraulic control system of energy saving excavator oil hydraulic cylinder | |
| CN202468547U (en) | Stroke detection device of telescopic cylinder and telescopic cylinder | |
| CN104897109A (en) | Strain gauge | |
| CN103256266B (en) | Construction machinery supporting leg synchronous control device and construction machinery | |
| CN104897112A (en) | Novel concrete strain gauge | |
| CN104897110A (en) | Novel concrete strain gauge | |
| KR101331861B1 (en) | Hydraulic horizonality control method of launch platform | |
| CN203702211U (en) | Hydraulic shield support and automatic top beam adjusting device for hydraulic shield support | |
| CN104897113A (en) | Strain gauge | |
| CN206095484U (en) | Rock pressure detection device | |
| CN204125048U (en) | A kind of car hosit telescoping boom length safety system | |
| CN104698639A (en) | Liquid crystal display screen with heating function | |
| US20160121472A1 (en) | Method for controlling the impact energy of an impulse piston of a percussion tool | |
| CN105625291B (en) | A kind of air pressure static penetrometer probe system | |
| WO2011142835A1 (en) | Platform leveling system | |
| KR20160075082A (en) | Horizontality control apparatus of working vehicle | |
| CN205133064U (en) | A portal vibration damper for vertical lift fork truck | |
| CN110834680A (en) | Automatic leveling device of miniature hilly and mountain crawler tractor | |
| CN104044999A (en) | Tower crane jacking mechanism operation control method, device and system and tower crane | |
| CN102145869B (en) | Safety limit system for amplitude limit and torque limit redundancy | |
| CN204043764U (en) | Shovel loader intelligent weighing system | |
| GB2590329A (en) | Drilling systems and methods |
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: 20140709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |