CN2660129Y - Autothrottle - Google Patents
Autothrottle Download PDFInfo
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- CN2660129Y CN2660129Y CN 200320107486 CN200320107486U CN2660129Y CN 2660129 Y CN2660129 Y CN 2660129Y CN 200320107486 CN200320107486 CN 200320107486 CN 200320107486 U CN200320107486 U CN 200320107486U CN 2660129 Y CN2660129 Y CN 2660129Y
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Abstract
An automatic ventilation door used for mine ventilation consists of a locomotive touching pole and pedestrian footplate link gear, a hydraulic control valve set, a retractable pulling resetting mechanism for an individual hydraulic prop and a ventilation door delay mechanism. The locomotive touching pole and pedestrian footplate link gear consists of touching poles, footplates, pull ropes and pulleys equipped on both sides of the ventilation door and a common control rod and a return tension spring; the hydraulic control valve set consists of a water inlet control valve, a water outlet control valve which are linked synchronously and an external pipeline; the rotary shafts of the two control valves are linked with the control rod; the retractable pulling resetting mechanism for an individual hydraulic prop consists of an individual hydraulic prop, a pull rope, a pulley and a return tension spring; the ventilation door delay mechanism consists of a spring lock mechanism, a pull rope, a pulley and a return mechanism. The automatic ventilation door directly utilizes the downhole water supply pressure as the driving force; the control valve set will control the retraction of the individual hydraulic prop by mechanical control to realize the automatic opening and closing of the ventilation door; the ventilation door has no electric explosion problem and the ventilation door is safe and reliable; the manufacture is simple; the installation is convenient and the operation is simple.
Description
Affiliated technical field
The utility model relates to down-hole, mine ventilation equipment, particularly a kind ofly utilizes self closing door that the down-hole water supply pressure is used as power, by machinery control.
Background technology
At present, automation air door kind is more, but major part can not normally be used.Photoelectricity, acoustic control self closing door are because electromagnetic valve into and out of 1 millimeter of aperture, water hole less than, is very easily stopped up by impurity, and the water yield that electromagnetic valve flows out is little, cause door opening, closing velocity slow, the pedestrian is longer by the time of air door, causes this self closing door normally not use.Mechanical impact formula self closing door can not effectively be controlled because opening speed is too fast, very easily injures the opposite pedestrian, and safety is constituted a threat to; And the pedestrian is during by this air door, open and close automatically, so the impacting type air door also is eliminated.The electrodynamic type air door is because electrical equipment is more, and investment is big, maintenance of equipment rate height, and it is all multifactor that gas detection is frequent etc., and it is big to promote difficulty at the scene.
Summary of the invention
In order to overcome the deficiency that existing self closing door fault is many, can not normally use, the utility model provides a kind of novel self closing door, and this self closing door utilizes the down-hole water supply pressure to be used as power, and adopts machinery control, do not have to lose quick-fried problem, and safe and reliable, make simple, easy for installation, easy to operate.
The technical scheme that its technical problem that solves the utility model adopts is:
Self closing door is made up of locomotive touching lever and pedestrian's foot rest interlinked mechanism, hydraulic control valve group, hydraulic prop flexible pulling resetting-mechanism and air door time-delay mechanism four parts.
1. locomotive touching lever and pedestrian's foot rest interlinked mechanism:, through stay cord I, walk around pulley I, be connected, constitute the ingredient that this mechanism is positioned at air door one side with an end and the reset tension spring of control lever by the touching lever I foot rest I other that is positioned on the track with being positioned at track; Be installed on the touching lever II foot rest II other on the track, by stay cord II, walk around pulley II, be connected, constitute the ingredient that this mechanism is positioned at the air door opposite side with the same end and the reset tension spring of above-mentioned control lever with being installed on track.Control lever links or contacts with the part of controlling of hydraulic control valve group.
2. hydraulic control valve group: water inlet control valve and outlet water control valve and external pipeline etc. by synchronous interaction constitute.The mounting means of water-in and water-out control valve is: when control lever was in reset mode, water inlet control valve was closed, outlet water control valve is opened; When stay cord I, stay cord II pulling control lever, control lever rotates around its fixed axis, and water inlet control valve is opened, outlet water control valve is closed.The water inlet of water inlet control valve is connected with down-hole water supply water pipe through water intaking valve, the water inlet control valve delivery port connects the liquid inlet joint of hydraulic prop through water pipe, the outlet water control valve water inlet connects the fluid joint of hydraulic prop through water pipe, and the delivery port of outlet water control valve picks out water pipe.
3. hydraulic prop stretches and spurs resetting-mechanism: be made of hydraulic prop, stay cord, pulley, reset tension spring etc.The bottom of the cylinder body of hydraulic prop is provided with the liquid inlet and outlet joint, is connected with reset tension spring between cylinder body and the post of living; One end of stay cord is connected in the capital end alive of hydraulic prop, and the other end is walked around pulley, is connected on the air door.
4. air door time-delay mechanism: constitute by striker mechanism, stay cord, pulley and resetting-mechanism etc.Movable lug that striker mechanism slides by shell, along outer casing inner wall and the spring between the two constitute.Slide bar that resetting-mechanism slides by shell, along outer casing inner wall and the spring between the two constitute.Stay cord one end is connected with the rear end of movable lug, and the other end is walked around pulley and is connected with the rear end of slide bar.Resetting-mechanism should be installed in, when the post alive of hydraulic prop stretches out fully, can touch on the position of slide bar front end; When perhaps, air door opens wide fully, air door can touch on the position of slide bar front end.When control lever be subjected to the pulling of stay cord I or stay cord II, when its fixed axis rotates, after control lever touched and slips over the sliding surface of movable lug, the movable lug that is rebounded blocked.When the slide bar front end is subjected to live the shake-up of post or air door and control lever when not being subjected to stay cord I or stay cord II pulling, slide bar contracts behind the movable lug of stay cord pulling striker mechanism, makes control lever under the effect of reset tension spring, crosses movable lug, counter-rotating resets.
The technical scheme that its technical problem that solves the utility model adopts can also be:
The hydraulic control valve group of self closing door adopts hydraulic control spherical valve group; Be that its water inlet control valve, outlet water control valve adopt ball valve I, ball valve II.Two ball valves are fixed in side by side on the firm banking, and the rotating shaft of the two connects firmly with the rotating shaft of gear I, gear II respectively.The modulus of two gears is identical with the number of teeth, is meshing with each other.Control lever is its fixed axis with the rotating shaft of the gear that stretches out protective cover, and the two connects firmly.The mounting means of two ball valves is: when control lever when pulled, two gears rotate 90 degree, ball valve I opens, ball valve II closes; When resetting under the effect of control lever at reset tension spring, two gears are counter to be turn 90 degrees, and ball valve I closes, ball valve II opens.
The hydraulic control valve group of self closing door also can adopt motor-driven two-position four way change valve.
The beneficial effects of the utility model are:
1. this self closing door directly utilizes resource of water supply that the mine down-hole has certain hydraulic pressure as power source, make simple, easy for installation, easy to operate, cost is low.
2. adopt machinery control, do not lose quick-fried.Safe and reliable, sturdy and durable, the life-span is long.
3. be difficult for stopping up, safeguard few.In case damage, do not hinder the pedestrian.Air door opens and closes the adjustable-speed joint.
Description of drawings
Fig. 1 is the composition schematic diagram of the utility model self closing door
Fig. 2 is the structural representation of self closing door locomotive touching lever interlinked mechanism
Fig. 3 is the side view cutaway drawing of Fig. 2
Fig. 4 is the internal construction schematic bottom view of hydraulic control valve group
Fig. 5 is the external structure schematic diagram of hydraulic control valve group
Fig. 6 is the structural representation of the flexible pulling of hydraulic prop resetting-mechanism
Fig. 7 is the structural representation front view of air door time-delay mechanism
Fig. 8 is the structural representation vertical view of air door time-delay mechanism
Fig. 9 is the structural representation of resetting-mechanism
Figure 10 is the control system figure that the hydraulic control valve group adopts motor-driven two-position four way change valve
Among the figure: 1-touching lever I; 2-touching lever II; 3-foot rest I; 4-foot rest II; 5-stay cord I; 6-stay cord II; 7-pulley I; 8-pulley II; the 9-back-moving spring; the 10-control lever; 11-hydraulic control spherical valve group; the 12-water intaking valve; 13-water supply water pipe; the 14-water inlet pipe; the 15-high-pressure rubber pipe of intaking; 16-water outlet high-pressure rubber pipe; the 17-outlet pipe; the 18-hydraulic prop; the 19-stay cord; the 20-air door; the 21-resetting-mechanism; the 22-stay cord; the 23-pulley; the 24-latch; the 25-support; the 26-fixed head; the 27-track; the 28-sleeper; the 29-rotating shaft; 30-gear I; 31-gear II; 32-ball valve I; 33-ball valve II; the 34-protective cover; the 35-firm banking; the 36-liquid inlet joint; 37-fluid joint; the 38-cylinder body; the 39-pulley; the 40-reset tension spring; 41-post alive; the 42-movable lug; the 43-shell; the 44-spring; the 45-shell; the 46-spring; the 47-slide bar; the 48-two-position four way change valve
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
The composition of the utility model self closing door shown in Figure 1.Mainly form: 1. locomotive touching lever and pedestrian's foot rest interlinked mechanism by following four parts; 2. hydraulic control valve group; 3. hydraulic prop stretches and spurs resetting-mechanism; 4. air door time-delay mechanism.
1. locomotive touching lever and pedestrian's foot rest interlinked mechanism: by touching lever I (1) the foot rest I (3) other that is installed on the track with being installed on track, by stay cord I (5), walk around pulley I (7), be connected with an end and the reset tension spring (9) of control lever (10), constitute the ingredient that this mechanism is positioned at air door one side.Be installed on touching lever II (2) the foot rest II (4) other on the track with being installed on track, by stay cord II (6), walk around pulley II (8), be connected with the same end and the reset tension spring (9) of control lever (10), constitute the ingredient that this mechanism is positioned at the air door opposite side.Control lever (10) connects firmly with the rotating shaft of hydraulic control valve group.
In touching lever I shown in Fig. 2,3 (1) installation situation in orbit.The vertical rod of touching lever I (1) vertically is fixed on the cross bar, and the limit vertical rod is vertically connected at the following end of turning a section of cross bar; Cross bar is supported by support (25) and can be around its axis swing.Support (25) is fixed on the fixed head (26), and fixed head (26) is fixed on the sleeper (28).Vertical rod upper end, limit is connected with stay cord I (5).Owing to be subjected to the tension of stay cord I (5), when no locomotive or mine car touching lever, during reset mode, vertical rod is erected in two tracks (27) centre.
Touching lever II (2) installation situation in orbit is identical with touching lever I (1).
2. hydraulic control valve group: mainly constitute by hydraulic control spherical valve group (11) and external pipeline thereof.
Composition in the group of hydraulic control spherical valve shown in Fig. 4,5 (11).Ball valve I (32), ball valve II (33) are fixed in side by side on the firm banking (35) respectively as water inlet control valve, outlet water control valve.The rotating shaft of two ball valves connects firmly with the rotating shaft of gear I (30), gear II (31) respectively.The modulus of two gears is identical with the number of teeth and be meshing with each other.Be to realize synchronous interaction control, two ball valves are installed and will be guaranteed: when stay cord I (5), stay cord II (6) pulling control lever (10), two gears rotate that 90 degree, ball valve I (32) are opened, ball valve II (33) close; When back-moving spring (9) makes control lever (10) when resetting, two gears are counter to be turn 90 degrees, ball valve I (32) closes, ball valve II (33) opens.Add a protective cover (34) outside ball valve and the gear, protective cover (34) is gone up and double as two gear rotation shaft supports in firm banking (35) with bolt.One end of gear I (30) rotating shaft (29) stretches out protective cover (34), is fixedly connected with the stage casing of control lever (10).
The water inlet of ball valve I (32) through water inlet pipe (14), water intaking valve (12) with dustproof water pipe (13), be that down-hole water supply water pipe is connected; The delivery port of ball valve I (32) connects the liquid inlet joint of hydraulic prop (18) through water inlet high-pressure rubber pipe (15).The water inlet of ball valve II (33) connects the fluid joint of hydraulic prop (18) through water outlet high-pressure rubber pipe (16); The delivery port of ball valve II (33) picks out water pipe (17).
3. hydraulic prop stretches and spurs resetting-mechanism: by hydraulic prop (18), stay cord (19), pulley (39) and reset tension spring formations such as (40).
The structure of hydraulic prop shown in Figure 6 (18).The cylinder body of hydraulic prop (38) bottom is welded with liquid inlet joint (36), fluid joint (37), a pulley (39) is welded on cylinder body (38) top, connects two reset tension springs (40) between cylinder body (38) bottom and work post (41) top, lays respectively at pillar (18) both sides.One end of stay cord (19) is connected in post alive (41) top, and the other end is walked around pulley (39), is connected on the air door (20).
Hydraulic prop (18) is a single-action hydraulic cylinder, and liquid inlet and outlet joint (36,37) is communicated with same cylinder chamber.According to field condition, hydraulic prop (18) but traverse or place vertically serves as easy not hinder the pedestrian.The mechanical-hydraulic control section is installed in air door opening one side, and hydraulic prop (18) is located at the tunnel opposite side.
4. air door time-delay mechanism: by striker mechanism (24), resetting-mechanism (21), stay cord formations such as (22).
Installation site and structure at striker mechanism shown in Fig. 7,8 (24).Striker mechanism (24) is fixed in protective cover (34) upside of hydraulic control spherical valve group (11); Constitute by movable lug (42), shell (43) and spring (44).Movable lug (42) is positioned at cylindrical housing (43), can slides along shell (43) inwall, and spring (44) is connected between movable lug (42), the shell (43).The sliding surface of movable lug (42) front end when being controlled bar (10) and touching, withdrawal and it is blocked backward; Movable lug (42) rear end is connected with stay cord (22) one ends.Stay cord (22) other end is walked around pulley (23) and is connected with slide bar (47) rear end of resetting-mechanism (21).Resetting-mechanism (21) is made of slide bar (47), spring (46), shell (45).As shown in Figure 9.Slide bar (47) is positioned at cylindrical outer casing (45) and slides along outer casing inner wall, mounting spring (46) between slide bar (47) and the shell, and the front end of slide bar (47) turns head, and shell has fixed head on (45).It is other resetting-mechanism can be fixed in hydraulic prop (18) by fixed head, and makes and turn head and be on the position that the post alive (41) of hydraulic prop can touch when all stretching out.
Except the foregoing description, the utility model can also adopt following measure:
1. the hydraulic control valve group adopts motor-driven two-position four way change valve: rotary valve or guiding valve all can, should be with seal sealing.Adopt rotary valve, control lever (10) connects firmly with its rotating shaft, positive and negatively turn 90 degrees control, and is identical with example 1.Adopt guiding valve, control lever (10) one end bearing pin hinged securement are touched the roller of guiding valve and are controlled by its bar portion.Specifically as shown in figure 10, the P mouth of reversal valve (48) is connected with dustproof water pipe (13) through water inlet pipe, water intaking valve, and the O mouth picks out water pipe (17), and A mouth, B mouth are communicated with, connect hydraulic prop (18) liquid inlet and outlet joint through high-pressure rubber pipe (16).This moment, the liquid inlet and outlet joint was public one.When control lever (10) by stay cord pulling, rotate around bearing pin, the roller that touches reversal valve (48) slides spool, reversal valve (48) commutation makes water supply water in down-hole inject cylinder body (38) through P mouth, A mouth, the post (41) of living stretches out, stay cord (19) draws back air door (20).When control lever (10) in reset tension spring (9) effect down around the bearing pin counter-rotating, when resetting, reversal valve (48) is resetted, the water in the cylinder body (38) is discharged through B mouth, O mouth, the post (41) of living is withdrawn, air door (20) is closed.
2. the resetting-mechanism of air door time-delay mechanism (21) is installed on air door next door, top, tunnel, makes the front end of the slide bar (47) of resetting-mechanism turn head and is touched by air door when air door opens wide fully.
Operating principle:
1. vehicle is by before the self closing door, push over touching lever (1 or 2) earlier, after falling down, touching lever (1 or 2) drives stay cord (5 or 6), through pulley (7 or 8), control lever (10) is spurred, control lever (10) dextrorotation is turn 90 degrees, gear (30) that control lever (10) connects and meshing gear (31) thereof are closed water intake ball valve (32) unlatching, draining ball valve (33), press water injects hydraulic prop cylinder body (38) through water inlet high-pressure rubber pipe (15), the post (41) of living stretches out, and drives stay cord (19) and through pulley (39) air door (20) is moved to the enable possition.At this moment, because after control lever (10) slipped over from movable lug (42) sliding surface of striker mechanism, the movable lug (42) that is rebounded blocked, make control lever (10) extension spring (9) that can not be reset immediately retract reset position.Have only after the post (41) of living all stretches out, slide bar (47) front end that shake-up is positioned at the resetting-mechanism in its place ahead turns head, slide bar (47) pulling stay cord (22), stay cord (22) contracts after walking around pulley (23), pulling movable lug (42), and control lever (10) just might reverse under reset tension spring (9) effect and reset.Realize the delay function of air door.Vehicle is by behind the air door (20), and touching lever (1 or 2) is holded up under the effect of reset tension spring (9), and the movable lug (42) that control lever (10) contracts after crossing under the effect of reset tension spring (9) rotates counterclockwise 90 degree, gets back to reset mode.At this moment, gear (30) and meshing gear (31) thereof that control lever (10) connects, make that water intake ball valve (32) is closed, draining ball valve (33) opens, water in the cylinder body (38) is discharged through draining high-pressure hose (16), gutter (17), the post alive (41) of hydraulic prop is withdrawn under the effect of reset tension spring (40), stay cord (19) loosens, and air door (20) is closed, thereby realizes the air door switch automation.As long as the hydraulic pressure of the dustproof water pipe in down-hole is greater than 0.2MPa, and hydraulic prop thrust is enough to open air door.
2. the pedestrian in any side of air door, sets foot on foot rest (3 or 4) when the air door, and foot rest will drive stay cord (5 and 6) turn 90 degrees control lever (10) dextrorotation, after this makes air door (20) unlatching by 1. money is described.The pedestrian is by behind the air door, and in reset tension spring (9) effect down, control lever (10) is got back to reset mode, after this closes by the 1. described air door (20) that makes of money, and foot rest (3,4) lifts under reset tension spring (9) acts on again simultaneously.
Processing and manufacturing: 1. two ball valves are selected high-pressure ball valve for use; Two pinions that weld in its rotating shaft, diameter is greater than the high-pressure ball valve width.Control lever is welded in the rotating shaft of a high-pressure ball valve, and its upper end welded nut is used for fastening rope.To note protecting the sealing mat of high-pressure ball valve in the welding, prevent to burn out and leak.2. hydraulic prop (18) can be selected DZ-16 or the transformation of DZ-20 type hydraulic prop; The liquid inlet and outlet joint welds with snap joint and iron pipe.3. striker mechanism, resetting-mechanism: shell is processed with steel pipe, and movable lug and slide bar are processed with reinforcing bar.4. touching lever, footrest mechanism are processed with reinforcing bar, steel plate.5. stay cord (19) is with coarse-wire rope, other stay cord seizing wire.6. reset tension spring, spring steel wire self-control.Be mainly rivet welding spare, process no specific (special) requirements.
Claims (3)
1. a self closing door is characterized in that: comprise locomotive touching lever and pedestrian's foot rest interlinked mechanism, hydraulic control valve group, the flexible pulling of hydraulic prop resetting-mechanism, air door time-delay mechanism;
1. locomotive touching lever and pedestrian's foot rest interlinked mechanism: by touching lever I (1) the foot rest I (3) other that is positioned on the track with being positioned at track, through stay cord I (5), walk around pulley I (7), be connected with an end and the reset tension spring (9) of control lever (10), constitute the ingredient that this mechanism is positioned at air door one side; Be installed on touching lever II (2) the foot rest II (4) other on the track with being installed on track, by stay cord II (6), walk around pulley II (8), be connected with same end of control lever (10) and reset tension spring (9), constitute the ingredient that this mechanism is positioned at the air door opposite side; The part of controlling of control lever (10) and hydraulic control valve group links or contacts;
2. hydraulic control valve group: the water-in and water-out control valve and the external pipeline that comprise synchronous interaction; When control lever (10) when being in reset mode, water inlet control valve is closed, outlet water control valve is opened; When stay cord I (5), stay cord II (6) pulling control lever (10), control lever (10) rotates around its fixed axis, and water inlet control valve is opened, outlet water control valve is closed; The water inlet control valve water inlet is connected with down-hole water supply water pipe (13) through water intaking valve (12), the water inlet control valve delivery port connects hydraulic prop (18) liquid inlet joint through water pipe, the water inlet of outlet water control valve connects the fluid joint of hydraulic prop (18) through water pipe, and the delivery port of outlet water control valve picks out water pipe (17);
3. hydraulic prop stretches and spurs resetting-mechanism: comprise hydraulic prop (18), stay cord (19), pulley (39), reset tension spring (40); The cylinder body of hydraulic prop (38) bottom is provided with the liquid inlet and outlet joint, is connected with reset tension spring (40) between cylinder body (38) and the post alive (41); Stay cord (19) one ends are connected in post alive (41) top of hydraulic prop, and the other end is walked around pulley (39), is connected on the air door (20);
4. air door time-delay mechanism: comprise striker mechanism (24), stay cord (22), pulley (23) and resetting-mechanism (21); Movable lug (42) and the spring between the two (44) that striker mechanism (24) comprises shell (43), slides along shell (43) inwall; Slide bar (47) and the spring between the two (46) that resetting-mechanism (21) comprises shell (45), slides along shell (45) inwall; Stay cord (22) one ends are connected with the rear end of movable lug (42), and the other end is walked around pulley (23) and is connected with slide bar (47) rear end; Resetting-mechanism (21) is placed in: hydraulic prop (18) is lived when extending fully on post (41) and the position that slide bar (47) front end touches mutually, when perhaps air door is unlimited fully on air door (20) and the position that slide bar (47) front end touches mutually; When control lever (10) be subjected to stay cord I (5) or stay cord II (6) pulling, when its fixed axis rotates, after control lever (10) touches and slips over the sliding surface of movable lug (42), be in the state that the movable lug (42) that rebounded blocks; When slide bar (47) front end is subjected to live the shake-up of post (41) or air door (20) and control lever (10) when not being subjected to stay cord I (5) or stay cord II (6) pulling, slide bar (47) contracts behind stay cord (22) pulling movable lug (42), control lever (10) is crossed movable lug (42), is inverted to reset mode under the effect of reset tension spring (9).
2. self closing door according to claim 1 is characterized in that: said hydraulic control valve group is a hydraulic control spherical valve group (11), and the water-in and water-out control valve is ball valve I (32), ball valve II (33), and the two is fixed in side by side on the firm banking (35); The rotating shaft of two ball valves links with the rotating shaft of gear I (30), gear II (31) respectively; The modulus of two gears is identical with the number of teeth, be meshing with each other; The fixed axis of said control lever (10) is the rotary gear shaft (29) that stretches out protective cover (34); Two ball valve mounting meanss are: when control lever (10) when pulled, two gears rotate 90 degree, ball valve I (32) opens, ball valve II (33) closes; When control lever (10) resetted under reset tension spring (12) effect, two gears are counter to be turn 90 degrees, and ball valve I (32) closes, ball valve II (33) opens.
3. self closing door according to claim 1 is characterized in that: said hydraulic control valve group is motor-driven two-position four way change valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107486 CN2660129Y (en) | 2003-12-05 | 2003-12-05 | Autothrottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107486 CN2660129Y (en) | 2003-12-05 | 2003-12-05 | Autothrottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660129Y true CN2660129Y (en) | 2004-12-01 |
Family
ID=34342257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320107486 Expired - Fee Related CN2660129Y (en) | 2003-12-05 | 2003-12-05 | Autothrottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2660129Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405429A (en) * | 2014-12-16 | 2015-03-11 | 中矿金业股份有限公司 | Underground automatic hydraulic air valve and control method thereof |
| CN105019931A (en) * | 2015-08-04 | 2015-11-04 | 贵州大学 | Air door control system used for mine and application method thereof |
| CN110439605A (en) * | 2019-08-07 | 2019-11-12 | 四川省煤炭设计研究院 | A kind of coal mine air door anticollision linkage car stopping device |
-
2003
- 2003-12-05 CN CN 200320107486 patent/CN2660129Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405429A (en) * | 2014-12-16 | 2015-03-11 | 中矿金业股份有限公司 | Underground automatic hydraulic air valve and control method thereof |
| CN104405429B (en) * | 2014-12-16 | 2017-05-03 | 中矿金业股份有限公司 | Underground automatic hydraulic air valve and control method thereof |
| CN105019931A (en) * | 2015-08-04 | 2015-11-04 | 贵州大学 | Air door control system used for mine and application method thereof |
| CN110439605A (en) * | 2019-08-07 | 2019-11-12 | 四川省煤炭设计研究院 | A kind of coal mine air door anticollision linkage car stopping device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |