CN105300716A - Coal mining support system - Google Patents
Coal mining support system Download PDFInfo
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- CN105300716A CN105300716A CN201510747212.0A CN201510747212A CN105300716A CN 105300716 A CN105300716 A CN 105300716A CN 201510747212 A CN201510747212 A CN 201510747212A CN 105300716 A CN105300716 A CN 105300716A
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- housing
- support system
- coal mining
- coal
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Abstract
The invention discloses a coal mining support system, comprising a coal mining simulation device and a hydraulic support simulation device arranged on the back side; the hydraulic support simulation device comprises a bottom plate (1), a top plate (2), a stress counter, a driving device and a baffle (3). The top part and the bottom part of the stress counter are connected to the top plate (2) and the bottom plate (1); the upper end of the baffle (3) is connected to the rear end of the top plate; the angle formed between the baffle (3) and the top plate (2) is an obtuse angle; and the driving device drives the hydraulic support simulation device to move. The coal mining support system disclosed by the invention can improve the test accuracy, greatly reduces the work intensity and makes the test more intelligent.
Description
Technical field
The present invention relates to mining machinery field, particularly relate to a kind of coal mining support system of mining for simulated field.
Background technology
Analog simulation model and device are used for simulate formation coal seam digging process, by the situation of change of rock stratum above simulation hand excavation coal seam and coal seam, infer the situation of change of Roof Rock Strata of Coal Seam in actual digging process, so be referred to as scale model.
But there is following defect in scale model of the prior art:
First, digging process is artificial by thin iron rod excavation, be generally every two hours excavations certain distance coal seam (as about 50mm), this method does not meet the similar speed that pushes to adopt of analog simulation (according to the ratio of similitude of 100:1, this just means that coal pushes to adopt 5m forward once, this is unscientific), namely excavate according to certain speed, and a general model need three days three night above Time Continuous excavation, this requires that again experimenter also needs every two hours excavations once at night, an experiment generally needs 3-5 name to excavate personnel, workload is very large, very inconvenient.
The second, staff is when excavating, and due to the general wide 300mm of scale model device, in middle part, model relative rigid is just looked at unclear, often digs wrong top board or base plate etc., and the Influence on test result for experiment is larger.
3rd, sometimes model relative rigid, need to use very large strength just can dig, position in a model, even need to beat just can dig, this vibrations, beat or unconsciously touch top board, being all equivalent to the impact of rock burst very large in actual production, the Influence on test result such as experiment therefore for some research top board structure is larger.
Finally, analog simulation mainly studies the stress characteristics of roof and floor at present, top board be caving feature etc., can analog operation face face analogue means and its migration and stress monitoring system and method but also do not have at present, the Influence on test result for similarity simulation experiment is larger.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can improve experiment accuracy, greatly reduces working strength, makes the more intelligentized coal mining support system of experiment.
A kind of coal mining support system, be arranged in analog simulation model, described analog simulation model comprises support body, be arranged on the coal seam on described support body and be arranged on the support bar of the both sides bottom it, be arranged at other rock stratum of upper and lower, described coal seam, described coal mining support system is arranged in described coal seam, described support bar runs, described coal mining support system comprises coal mining analogue means and is positioned at the hydraulic support analogue means on rear side of it, described hydraulic support analogue means comprises base plate, top board, taseometer measuring device, drive unit and baffle plate, wherein, the top of described taseometer measuring device is connected with described top board and base plate respectively with bottom, the upper end of described baffle plate is connected with the rear end of described top board, angle between described baffle plate and described top board is obtuse angle, drive unit drives described hydraulic support analogue means to move, angle between described top board and surface level is 3 °, and the rear end of top board is higher than front end, and the angle between described baffle plate and described top board is 142 °, the bottom of described base plate is provided with wheel body, and described wheel body is connected with described drive unit.
Coal mining support system of the present invention, the inner prop that wherein said taseometer measuring device comprises the first housing and is provided at its inner portion, described inner prop freely can slide up and down in described first housing, the top of described inner prop is fixedly connected with described top board, strain films is connected with in the bottom of described first housing, and described strain films covers the bottom of described first housing, described strain films, air cavity is formed between described first housing and described inner prop, air bag is provided with in described air cavity, described air bag is sealed to form by plastic film, described strain films is connected with strainmeter by data line, described strainmeter is connected with computing machine.
Coal mining support system of the present invention, the bottom of wherein said first housing connects the second housing, and the thickness of described second housing is less than the thickness of described first housing, and the bottom of described second housing connects back up pad;
Described inner prop, described first housing, described second housing are cylindrical, one end connector of described data line is arranged on the described strain films on the bottom of described first housing, described second housing is provided with through hole, the other end of described data line passes from described through hole, is connected with described strainmeter; Described second housing is evenly provided with multiple bleeder vent.
Coal mining support system of the present invention, wherein said taseometer measuring device also comprises arrangement for adjusting height, described arrangement for adjusting height is made up of the external spiral bar be threaded and inside spin bar, the lower end of described inside spin bar is fixed on described base plate, the upper end of described external spiral bar is connected with described back up pad, the edge of described back up pad is provided with draw-in groove, the top of described external spiral bar is fixed with the card matched with described draw-in groove, described card is arranged in described draw-in groove, and freely can rotate in described draw-in groove.
Coal mining support system of the present invention, wherein, described taseometer measuring device is two that are arranged side by side.
Coal mining support system of the present invention, wherein, described coalcutter analogue means comprises cylinder, drum drive, coalcutter drive unit, described cylinder is divided into symmetrical two parts, centre is gear screw thread, be connected with described drum drive, be provided with helical blade on which cylinder, evenly spike-tooth is provided with at the edge of described helical blade, described spike-tooth has sharp keen tip, and direction, tip is outwards arranged, the sense of rotation of the helical blade on two parts cylinder of left and right is oppositely arranged, and is namely symmetrical arranged relative to described gear screw thread.
Coal mining support system of the present invention, wherein, is evenly provided with multiple coal brush on which cylinder, and the length of described coal brush is with the long 2mm of height of described helical blade; Coal mining support system of the present invention, wherein, described taseometer measuring device is two that are arranged side by side.
The using method of coal mining support system of the present invention, comprises the steps:
(A) experimental tool, material and instrument and equipment is got out;
(B) according to the principle of similitude, the coal rock layer needing simulation is laid in layering, ensure that the coal rock layer aspect of laying is straight, foil gauge is laid needing the rock stratum of monitor stress, all guide the data line of described foil gauge into side, pass from analog simulation device two mother rib lateral rotundum, simultaneously installation side backplate;
(C) air-dry, maintenance model one week, both sides side guard plate corresponding to the part side guard plate of analog simulation device and coal seam unloads by period;
(D) compensate the load lacked, by lever or counterweight iron block, be added on superincumbent stratum aspect to compensate the load of disappearance;
(E) on analog simulation device, install bracing frame, support frame as described above is parallel with seat earth, is arranged on the both sides in described coal seam, and supported on both sides frame is apart from each 15mm of described coal mining support system;
(F) what hand excavation 130mm was long cuts eye, installs package unit, adjustment screw rod height, top board hydraulic support analogue means top board is contacted with roof, according to the actual exploitation rate in colliery, moves frame distance determining device parameter, connection data line, switches on power, excavation model;
(G) in digging process, roof pressure and roof delamination data are monitored, store and ultimate analysis is carried out to result.
The present invention's support system difference from prior art of mining is:
The present invention's support system tool of mining has the following advantages:
First, devise automatic excavation, self-propelled coal mining analogue means, can realize simulating coal actual exploitation rate excavation coal seam completely.Without the need to manual operation, improve the science of experiment, and save a large amount of manual operation amount;
Secondly, devise the hydraulic support analogue means can monitoring roof pressure, roof Stress feature after the excavation of coal seam can be monitored, with actual monitoring value as a comparison, can well reacting phase like analog result accuracy;
Finally, devise hydraulic support drive unit, the actual frame situation of moving in colliery can be simulated to promote support, the accuracy of similarity simulation experiment can be improved more.
Below in conjunction with accompanying drawing, coal mining support system of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is that the present invention mines the perspective view of support system;
Fig. 2 is that the present invention mines the side view of support system;
Fig. 3 is that the present invention mines the structural representation of taseometer measuring device of support system;
Fig. 4 is that the present invention mines the structural representation of coalcutter of support system.
Embodiment
Embodiment 1
As shown in Figure 1 to 4, a kind of coal mining support system, be arranged in analog simulation model, analog simulation model comprises support body, be arranged on the coal seam on support body and be arranged on the support bar of the both sides bottom it, be arranged at other rock stratum of upper and lower, coal seam, coal mining support system is arranged in coal seam, support bar runs, coal mining support system comprises coal mining analogue means and is positioned at the hydraulic support analogue means on rear side of it, hydraulic support analogue means comprises base plate 1, top board 2, taseometer measuring device, drive unit and baffle plate 3, wherein, the top of taseometer measuring device is connected with top board 2 and base plate 1 respectively with bottom, the upper end of baffle plate 3 is connected with the rear end of top board 2, angle between baffle plate 3 and top board 2 is obtuse angle, drive unit drives hydraulic support analogue means to move.
Taseometer measuring device is two that are arranged side by side, the inner prop 5 that taseometer measuring device comprises the first housing 4 and is provided at its inner portion, and inner prop 5 freely can slide up and down in the first housing 4, with peripheral shell sliding friction, inner prop and case surface are all very smooth, and friction force is minimum, do not affect stress measurement; The top of inner prop 5 is fixedly connected with top board 2, strain films 6 is connected with in the bottom of the first housing 4, and strain films 6 covers the bottom of the first housing 4, air cavity is formed between strain films 6, first housing 4 and inner prop 5, air bag 7 is provided with in air cavity, air bag 7 is sealed to form by plastic film, and strain films 6 is connected with strainmeter by data line 8, and strainmeter is connected with computing machine.Size according to top air cavity pressure produces corresponding deformation, is transferred on strainmeter, is finally connected to computer through data line 8, and data show and store on computers;
The thickness that the bottom of the first housing 4 connects the second housing 9, second housing 9 is less than the thickness of the first housing 4, and the bottom of the second housing 9 connects back up pad 10;
Inner prop 5, first housing 4, second housing 9 is cylindrical, and it is prevent the end of a thread self gravitation from affect strain films distortion that an end connector of data line 8 is arranged on this design on the strain films 6 on the bottom of the first housing 4, thus guarantee measuring accuracy; Second housing 9 is provided with through hole, and the other end of data line 8 passes from through hole, is connected with strainmeter; Second housing 9 is evenly provided with multiple bleeder vent.
Taseometer measuring device also comprises arrangement for adjusting height, arrangement for adjusting height is made up of the external spiral bar 11 be threaded and inside spin bar 12, the lower end of inside spin bar 12 is fixed on base plate 1, the upper end of external spiral bar 11 is connected with back up pad 10, the edge of back up pad 10 is provided with draw-in groove 13, the top of external spiral bar 11 is fixed with the card 14 matched with draw-in groove 13, and card 14 is arranged in draw-in groove 13, and freely can rotate in draw-in groove 13.
Angle between top board 2 and surface level is 3 °, the rear end of top board 2 is higher than front end, this design moves the operation of frame to allow hydraulic support analogue means fully can simulate support along with seam mining, the too little or angle of the angle number of degrees is zero, hydraulic support top board may encounter roof, cannot advance; The angle number of degrees are too large, then cause top board pressure-bearing not steady, meter institute pressure measurement force value and actual value have deviation.Angle between baffle plate 3 and top board 2 is 142 °, the design of baffle angle and length, can ensure that broken sandstone can be slipped to seat earth, or monoblock sandstone touches on baffle plate, along with support moves, does not all affect meter measurement forward.Distance between the front end of inner prop 5 and the front end of top board 2 is 44mm, and when can ensure traversing carriage, coal mining analogue means under top board, can play a protective role.Horizontal range between the rear end of the bottom distance base plate 1 of baffle plate 3 is 15mm, and can ensure that internal stent can not enter sandstone, impact uses.
In a free state; distance between the top of inner prop 5 and the top of the first housing 4 is 7mm; when difference in height can ensure that top board 2 is subject to top pressure; top board 2 can sink together along with inner prop 5, thus reaches the object of measurement, simultaneously when deflection more than 7mm; now; force value is more than 0.3Mpa, and the first housing 4 can stop top board 2 to decline further, and protection strain films 6 does not destroy by large deformation.
The diameter of inner prop 5 is 8mm, be highly 15mm, the thickness of the first housing 4 is 5.2mm, and the thickness of the second housing 9 is 1.7mm, and external diameter is consistent with the external diameter of the first housing 4, the height of arrangement for adjusting height is 15mm, the length of base plate 1 is 68mm, and the length of top board 2 is 70mm, and the length of baffle plate 3 is 55mm, the bottom of base plate 1 is provided with wheel body, and wheel body is connected with drive unit.
During use, the experimentally realistic simulation height in coal seam, rotation height regulates external spiral bar 11, highly regulates external spiral bar 11 to be connected with highly regulating inside spin bar 12 spiral, and rotation height regulates external spiral bar 11 can rotate thus increase or reduce the height of hydraulic support analogue means.Back up pad 10, the space formed between strain films 6 and the second housing 9 facilitate strain films 6 to be out of shape, and surrounding has several bleeder vent, for keeping and extraneous UNICOM, ensure as normal atmosphere (An) pressure.
Coalcutter analogue means comprises cylinder 15, drum drive, coalcutter drive unit, wherein, cylinder 15 is divided into symmetrical two parts, centre is gear screw thread 16, be connected with drum drive 17, cylinder 15 is provided with helical blade 18, spike-tooth 19 is evenly provided with at the edge of helical blade 18, spike-tooth 19 has sharp keen tip, and direction, tip is outwards arranged, the sense of rotation of the helical blade 18 on left and right two parts cylinder 15 is oppositely arranged, and is namely symmetrical arranged relative to gear screw thread 16.
Cylinder 15 is evenly provided with multiple coal brush 20, and the length of coal brush 20 is with the long 2mm of height of helical blade 18; Coalcutter analogue means also comprises wheel body, and wheel body is connected with coalcutter drive unit.
Cylinder 15 major function is cutting coal seam, is transported to beyond analog simulation device by the coal of cutting simultaneously.Coal mining machine roller is rotated down, gear screw thread 16 is connected with the motor gear of drum drive 17, helical blade 18 cuts coal seam together with spike-tooth 19, utilize helical blade 18 to be carried to device both sides by coal simultaneously, the many bunches of plastics that coal brush 20 is made up of plastics are carefully excellent, the cinder of base plate can be cleaned out, not allow ground coal affect experiment effect.
The using method of coal mining support system of the present invention, comprises the steps:
A, get out experimental tool, material and instrument and equipment;
B, according to the principle of similitude, layering lay need simulation coal rock layer, ensure lay coal rock layer aspect straight, foil gauge is laid needing the rock stratum of monitor stress, all guide the data line of foil gauge into side, pass from analog simulation device two mother rib lateral rotundum, simultaneously installation side backplate;
C, air-dry, maintenance model one week, both sides side guard plate corresponding to the part side guard plate of analog simulation device and coal seam unloads by period;
The load that D, compensation lack, by lever or counterweight iron block, is added on superincumbent stratum aspect to compensate the load of disappearance;
E, on analog simulation device, install bracing frame, support frame as described above is parallel with seat earth, is arranged on the both sides in described coal seam, and supported on both sides frame is apart from each 15mm of described coal mining support system;
What F, hand excavation 130mm were long cuts eye, installs package unit, adjustment screw rod height, top board hydraulic support analogue means top board is contacted with roof, according to the actual exploitation rate in colliery, moves frame distance determining device parameter, connection data line, switches on power, excavation model;
In G, digging process, roof pressure and roof delamination data are monitored, store and ultimate analysis is carried out to result.
Above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. a coal mining support system, be arranged in analog simulation model, described analog simulation model comprises support body, be arranged on the coal seam on described support body and be arranged on the support bar of the both sides bottom it, be arranged at other rock stratum of upper and lower, described coal seam, it is characterized in that: described coal mining support system is arranged in described coal seam, described support bar runs, described coal mining support system comprises coal mining analogue means and is positioned at the hydraulic support analogue means on rear side of it, described hydraulic support analogue means comprises base plate (1), top board (2), taseometer measuring device, drive unit and baffle plate (3), wherein, the top of described taseometer measuring device is connected with described top board (2) and base plate (1) respectively with bottom, the upper end of described baffle plate (3) is connected with the rear end of described top board (2), angle between described baffle plate (3) and described top board (2) is obtuse angle, drive unit drives described hydraulic support analogue means to move, angle between described top board (2) and surface level is 3 °, and the rear end of described top board (2) is higher than front end, and the angle between described baffle plate (3) and described top board (2) is 142 °, the bottom of described base plate (1) is provided with wheel body, and described wheel body is connected with described drive unit.
2. coal mining support system according to claim 1, it is characterized in that: the inner prop (5) that described taseometer measuring device comprises the first housing (4) and is provided at its inner portion, described inner prop (5) freely can slide up and down in described first housing (4), the top of described inner prop (5) is fixedly connected with described top board (2), strain films (6) is connected with in the bottom of described first housing (4), and described strain films (6) covers the bottom of described first housing (4), described strain films (6), air cavity is formed between described first housing (4) and described inner prop (5), air bag (7) is provided with in described air cavity, described air bag (7) is sealed to form by plastic film, described strain films (6) is connected with strainmeter by data line (8), described strainmeter is connected with computing machine.
3. coal mining support system according to claim 2, it is characterized in that: the bottom of described first housing (4) connects the second housing (9), the thickness of described second housing (9) is less than the thickness of described first housing (4), and the bottom of described second housing (9) connects back up pad (10);
Described inner prop (5), described first housing (4), described second housing (9) are cylindrical, one end connector of described data line (8) is arranged on the described strain films (6) on the bottom of described first housing (4), described second housing (9) is provided with through hole, the other end of described data line (8) passes from described through hole, is connected with described strainmeter; Described second housing (9) is evenly provided with multiple bleeder vent.
4. coal mining support system according to claim 3, it is characterized in that: described taseometer measuring device also comprises arrangement for adjusting height, described arrangement for adjusting height is made up of the external spiral bar (11) be threaded and inside spin bar (12), the lower end of described inside spin bar (12) is fixed on described base plate (1), the upper end of described external spiral bar (11) is connected with described back up pad (10), the edge of described back up pad (10) is provided with draw-in groove (13), the top of described external spiral bar (11) is fixed with the card (14) matched with described draw-in groove (13), described card (14) is arranged in described draw-in groove (13), and freely can rotate in described draw-in groove (13).
5. coal mining support system according to claim 4, it is characterized in that: described coalcutter analogue means comprises cylinder (15), drum drive, coalcutter drive unit, wherein, described cylinder (15) is divided into symmetrical two parts, centre is gear screw thread (16), be connected with described drum drive (17), described cylinder (15) is provided with helical blade (18), spike-tooth (19) is evenly provided with at the edge of described helical blade (18), described spike-tooth (19) has sharp keen tip, and direction, tip is outwards arranged, the sense of rotation of the helical blade (18) on left and right two parts cylinder (15) is oppositely arranged, namely be symmetrical arranged relative to described gear screw thread (16).
6. coal mining support system according to claim 5, it is characterized in that: on described cylinder (15), be evenly provided with multiple coal brush (20), the length of described coal brush (20) is with the long 2mm of height of described helical blade (18); Described coalcutter analogue means also comprises wheel body, and described wheel body is connected with described coalcutter drive unit.
7. coal mining support system according to claim 6, is characterized in that: described taseometer measuring device is two that are arranged side by side.
8. the using method of the coal mining support system according to any one of claim 1 ~ 7, is characterized in that: comprise the steps:
(A) experimental tool, material and instrument and equipment is got out;
(B) according to the principle of similitude, the coal rock layer needing simulation is laid in layering, ensure that the coal rock layer aspect of laying is straight, foil gauge is laid needing the rock stratum of monitor stress, all guide the data line of described foil gauge into side, pass from analog simulation device two mother rib lateral rotundum, simultaneously installation side backplate;
(C) air-dry, maintenance model one week, both sides side guard plate corresponding to the part side guard plate of analog simulation device and coal seam unloads by period;
(D) compensate the load lacked, by lever or counterweight iron block, be added on superincumbent stratum aspect to compensate the load of disappearance;
(E) on analog simulation device, install bracing frame, support frame as described above is parallel with seat earth, is arranged on the both sides in described coal seam, and supported on both sides frame is apart from each 15mm of described coal mining support system;
(F) what hand excavation 130mm was long cuts eye, installs package unit, adjustment screw rod height, top board hydraulic support analogue means top board is contacted with roof, according to the actual exploitation rate in colliery, moves frame distance determining device parameter, connection data line, switches on power, excavation model;
(G) in digging process, roof pressure and roof delamination data are monitored, store and ultimate analysis is carried out to result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747212.0A CN105300716A (en) | 2015-11-05 | 2015-11-05 | Coal mining support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747212.0A CN105300716A (en) | 2015-11-05 | 2015-11-05 | Coal mining support system |
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| Publication Number | Publication Date |
|---|---|
| CN105300716A true CN105300716A (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510747212.0A Withdrawn CN105300716A (en) | 2015-11-05 | 2015-11-05 | Coal mining support system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177651A (en) * | 2020-09-27 | 2021-01-05 | 辽宁工程技术大学 | Automatic coal mining equipment under condition of simulating large mining height |
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| US6795789B2 (en) * | 2001-05-21 | 2004-09-21 | Omnicron Electronics Corp. Usa | System for testing of intelligent electronic devices with digital communications |
| CN102866032A (en) * | 2012-09-27 | 2013-01-09 | 安徽理工大学 | Similar material simulation test system |
| CN204101517U (en) * | 2014-09-25 | 2015-01-14 | 安徽理工大学 | A kind of coal-face similarity simulation experiment platform |
| CN104792563A (en) * | 2015-04-29 | 2015-07-22 | 辽宁工程技术大学 | System for testing mechanical characteristics of complete fully-mechanized coal mining equipment of cylinder coal mining machine |
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2015
- 2015-11-05 CN CN201510747212.0A patent/CN105300716A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6795789B2 (en) * | 2001-05-21 | 2004-09-21 | Omnicron Electronics Corp. Usa | System for testing of intelligent electronic devices with digital communications |
| CN102866032A (en) * | 2012-09-27 | 2013-01-09 | 安徽理工大学 | Similar material simulation test system |
| CN204101517U (en) * | 2014-09-25 | 2015-01-14 | 安徽理工大学 | A kind of coal-face similarity simulation experiment platform |
| CN104792563A (en) * | 2015-04-29 | 2015-07-22 | 辽宁工程技术大学 | System for testing mechanical characteristics of complete fully-mechanized coal mining equipment of cylinder coal mining machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112177651A (en) * | 2020-09-27 | 2021-01-05 | 辽宁工程技术大学 | Automatic coal mining equipment under condition of simulating large mining height |
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Application publication date: 20160203 |