CN105217401A - Air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard and method - Google Patents
Air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard and method Download PDFInfo
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- CN105217401A CN105217401A CN201510710639.3A CN201510710639A CN105217401A CN 105217401 A CN105217401 A CN 105217401A CN 201510710639 A CN201510710639 A CN 201510710639A CN 105217401 A CN105217401 A CN 105217401A
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- 230000006378 damage Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 38
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
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- 210000001835 viscera Anatomy 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000037396 body weight Effects 0.000 claims description 3
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- 239000003921 oil Substances 0.000 description 22
- 239000003245 coal Substances 0.000 description 4
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- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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Abstract
A kind of air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard, comprise top board, hydraulic actuating cylinder, electromagnetic proportion relief valve, gas generant air bag, taking-up device, safety rope, safety strap, displacement pickup, speed sensor and signal processor, top board is arranged on above cage inwall, hydraulic actuating cylinder and gas generant air bag are arranged on below top board, hydraulic actuating cylinder is connected with electromagnetic proportion relief valve, the buffer strip of taking-up device is connected on the piston rod of hydraulic actuating cylinder, taking-up device bottom is connected with safety rope, the other end of safety rope is connected on the safety strap of miner's wearing.This device adopts the mode directly protecting miner; locking buffer strip when utilizing centrifugal clutch formula taking-up device to fall after rise after miner's upper punch; utilize gas generant air bag avoid miner when high speed pulleying upper punch head impact to cage inwall top; utilize electricity liquid ratio relief valve hydraulic control cylinder loculus to carry out back pressure draining to provide cushion effect, can effectively avoid miner to come to harm when overwind trouble occurs.
Description
Technical field
The present invention relates to a kind of the overwind trouble miner safety guard and the method that are applicable to coal mine shaft lining gig.
Background technology
Coal is the leading energy of China, and vertical shaft hoisting is the leading form that China's coal-mine is produced.Vertical shaft hoist undertakes the vital task promoting coal spoil, lower putting material, lifts personnel and equipment, is the connection hinge on underground coal mine and ground.As a kind of large-scale heavy duty high speed lifting means integrating mechanical electronic hydraulic run in deep-well, harsh carrying demand, time the unfavorable factor such as running environment, complicated geologic condition that becomes cause each component of gig to be easy to et out of order, the serious accidents such as crouching tank, pulleying are caused to happen occasionally, disconnected rope pendant tank great serious accident can be caused time serious, significant threat is formed to the life security of miner in cage.
For the protection of cage overwind trouble, the deceleration/decel that the steady tank arrangement of tank is rushed to summit to reduce cage pulleying is held in main employing at present, to weaken the impact of cage, and lacks the direct protection to miner in cage.Because cage belongs to heavy wares, its pulleying process, particularly vertical shaft hoist braking section do not slow down cause high speed pulleying time, its pulleying deceleration/decel is still larger.That first miner has upper punch by a small margin then to fall cage base after rise, easy crank, causes miner collide the metal sidewall of cage or fall down, causes miner to damage or tumble injury in low speed pulleying.When high speed pulleying, miner is under the effect of inertia, and head meeting quick washing, to the inwall top of cage, then falls to cage base under the effect of deadweight, larger injury can be caused, even threat to life to the fragile position such as head, splanchnocoel internal organs, vertebra of miner.And it is less for the research of the direct fender guard of miner in cage at present.
Summary of the invention
Technical matters: the object of the invention is the weak point overcome in prior art, provides a kind of structure simple, has the vertical shaft hoist overwind trouble miner safety guard of reliability and convenience concurrently.
Technical scheme: air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard of the present invention, comprises top board, hydraulic actuating cylinder, gas generant air bag, electromagnetic proportion relief valve, taking-up device, safety rope, safety strap, displacement pickup, speed sensor and signal processor; Described top board is arranged on above cage inwall, described hydraulic actuating cylinder, displacement pickup, speed sensor, signal processor, gas generant air bag and electromagnetic proportion relief valve are separately positioned on top board, the top of described taking-up device is connected with the piston rod of hydraulic actuating cylinder, the bottom of taking-up device is connected with safety rope, the other end of safety rope be worn on miner's safety strap with it and be connected, institute's displacement sensors, speed sensor, electromagnetic proportion relief valve are connected with signal processor respectively with the binary pair of gas generant air bag; Described gas generant air bag under the top plate square matrix formula is arranged, the line number of matrix, columns and spacing hold the quantity of miner according to cage and position is determined.
The complete installation of described hydraulic actuating cylinder, electromagnetic proportion relief valve and taking-up device, its quantity and the position be arranged on below top board are determined with the position of standing according to the quantity of cage accommodation miner.
Described taking-up device is centrifugal clutch formula taking-up device, centrifugal clutch formula taking-up device comprises spool, is located at the ratchet of spool both sides, described spool is wound with buffer strip, spool is provided with coaxial mounted plane scroll spring, the below of spool is provided with ratchet, ratchet is provided with through the fixing cam of sliding pin, cam is provided with can along the sliding pin of the notch movement of ratchet, the outside of plane scroll spring is provided with power-transfer clutch fork, power-transfer clutch fork is near spool lateral ends for increasing the weight of end, and the other end is provided with coil spring.
Described hydraulic actuating cylinder is single-acting cylinder, and the electromagnetic proportion relief valve be connected with hydraulic actuating cylinder is internal control internal drainage type by pass valve.
Described safety strap comprises shoulder belt and the bottom bands of trouser legs, is connected with the waistband of miner between shoulder belt and the bottom bands of trouser legs, and the back channel telescopic buckle of shoulder belt is connected with safety rope.
The air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety guard method of said apparatus, comprises the steps:
A, top board is fixed on above cage inwall, hydraulic actuating cylinder, displacement pickup, speed sensor, signal processor, gas generant air bag and electromagnetic proportion relief valve are separately positioned on top board, hydraulic actuating cylinder is connected electromagnetic proportion relief valve, and be connected on the piston rod of hydraulic actuating cylinder by the buffer strip of taking-up device, then the binary pair of displacement pickup, speed sensor, electromagnetic proportion relief valve and gas generant air bag is connected to signal processor;
B, miner have dressed safety strap and have entered after in cage, the safety rope at miner back is connected to taking-up device bottom tail end, stand by immediately below corresponding hydraulic actuating cylinder axis subsequently, under the retracting power effect of the plane scroll spring of taking-up device, buffer strip, safety rope, safety strap are tightened up;
C, cage are rising or in the operational process of transferring, signal processor by displacement pickup and speed sensor respectively Real-time Collection cage be arranged in height H and the running velocity V of hoistway;
Operation proposed by d, cage, when the height H of cage is higher than the point station set, judges overwind trouble to occur, the pulleying speed V ' now signal processor record cage now carried;
If when pulleying speed V ' is in the creeper speed scope 0.1 ~ 0.5m/s of cage deceleration latter end, be judged to be low speed overwind trouble, cage upwards slides along cage guide rope low speed, finally stop under vertical shaft hoist self holds the effect of the steady tank arrangement of tank, in the process: the braking deceleration of cage is lower, gas generant air bag does not trigger, first miner has upper punch by a small margin under the effect of inertia, then come back on cage base under the effect of deadweight, first taking-up device has small size retracting, then buffer strip is pulled downwards fast, spool fast rotational, the end that increases the weight of of power-transfer clutch fork outwards to swing at centrifugal action and stretches out, power-transfer clutch fork compression coil spring, and then actuating cam moves laterally, now ratchet is dragged near reel by sliding pin along notch by cam, until ratchet snaps in volume dog end, taking-up device is made to be in lockup state, buffer strip can not continue to extract out from taking-up device, the miner of low speed undershoot is under the effect of safety strap, safety rope, buffer strip pulls hydraulic cylinder piston rod, at this moment due to the oil pressure relief of hydraulic actuating cylinder rod chamber oil pressure out of reach electromagnetic proportion relief valve, thus hydraulic cylinder piston rod can not be drawn out, thus remain stable midstance when miner is fallen after rise, effectively prevent low speed pulleying from causing damaging of miner and tumble injury,
If when pulleying speed V ' is in the creeper speed scope 0.5m/s of cage deceleration latter end, be judged to be high speed overwind trouble, cage is along cage guide rope high speed upper punch, finally stop rapidly in the limited buffer distance of vertical shaft hoist well headroom, in the process: the braking deceleration of cage is larger, signal processor is according to the pulleying speed V ' of now cage, with reference to the safe buffering maximum deceleration a of miner, calculate the braking oil pressure P that hydraulic actuating cylinder needs to provide, i.e. the overflow oil pressure of electromagnetic proportion relief valve:
P＝m×a/s
Wherein: m is the default body weight of miner, s is the oil pressure active area of hydraulic actuating cylinder rod chamber,
Automatically the overflow oil pressure of electromagnetic proportion relief valve is set up by signal processor, signal processor traps gas propellant air bag, himself gas filled device passes through a large amount of nitrogen of the instantaneous generation of thermal chemical reaction, the gases such as water vapour form column air bag, column air bag in matrix arrangement extrudes mutually, final above miner, rectangular-shaped air bag is generated below top board, first miner impacts on air bag under the effect of inertia, fall fast under the effect of deadweight subsequently, first taking-up device furls with during miner's upper punch, then buffer strip is being pulled downwards fast, spool fast rotational, the end that increases the weight of of power-transfer clutch fork outwards to swing at centrifugal action and stretches out, power-transfer clutch fork compression coil spring, and then actuating cam moves laterally, now ratchet is dragged near reel by sliding pin along notch by cam, until ratchet snaps in volume dog end, taking-up device is made to be in lockup state, buffer strip can not continue to extract out from taking-up device, the miner of low speed undershoot is under the effect of safety strap, safety rope, buffer strip pulls hydraulic cylinder piston rod, now hydraulic actuating cylinder rod chamber oil pressure exceedes the oil pressure relief of electromagnetic proportion relief valve, start back pressure draining, hydraulic cylinder piston rod pulls out slowly under the prerequisite providing braking force, make hydraulic cylinder piston rod along buffer strip, safety rope, safety strap pulls miner, the existing braking force to miner, there is buffer distance again, thus the stop rapidly effectively avoiding miner to bring out because of the pulleying of cage high speed and head impact are to cage inwall top, effectively can reduce again falling process to the impact load to miner, impact load is dispersed to the shoulder of miner, crotch, reduce the impact to fragile positions such as miner's splanchnocoel internal organs and vertebras, thus the life security of available protecting miner.
Beneficial effect: the present invention adopts the mode of directly protection to damage to avoid overwind trouble miner's life security, locking buffer strip when utilizing centrifugal clutch formula taking-up device to fall after rise after miner's upper punch, rely on the midstance that safety rope and safety strap keep miner to keep relative stability when low speed pulleying falls after rise, utilize gas generant air bag avoid miner when high speed pulleying upper punch head impact to cage inwall top, electricity liquid ratio relief valve hydraulic control cylinder loculus is utilized to carry out back pressure draining to provide miner the cushion effect in high speed pulleying falling process, impact load is dispersed to the shoulder of miner, crotch, thus can effectively avoid miner to come to harm when overwind trouble occurs.This apparatus structure is simple, and have reliability and convenience concurrently, have practicality widely in the art, economic benefit is obvious.
Accompanying drawing explanation
Fig. 1 is apparatus structure of the present invention composition axonometric drawing.
Fig. 2 is that device gas generant air bag of the present invention triggers schematic diagram.
Fig. 3 is centrifugal clutch formula taking-up device principle of work schematic diagram of the present invention.
Fig. 4 is air bag hydraulic buffer principle schematic of the present invention.
In figure: the main hoisting rope of 1-, 2-cage guide rope, 3-safety rope, 4-brake clamp, 5-hydraulic actuating cylinder, 6-taking-up device, 6-1-buffer strip, 6-2-power-transfer clutch fork, 6-3-coil spring, 6-4-spool, 6-5-plane scroll spring, 6-6-cam, 6-7-sliding pin, 6-8-ratchet, 7-safety rope, 8-safety strap, 9-miner, 10-cage, 11-displacement pickup, 12-speed sensor, 13-signal processor, 14-gas generant air bag, 15-electromagnetic proportion relief valve, 16-top board.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard of the present invention, is formed primarily of top board 16, hydraulic actuating cylinder 5, gas generant air bag 14, electromagnetic proportion relief valve 15, taking-up device 6, safety rope 7, safety strap 8, displacement pickup 11, speed sensor 12 and signal processor 13, described top board 16 is arranged on above cage 10 inwall, described hydraulic actuating cylinder 5, displacement pickup 11, speed sensor 12, signal processor 13, gas generant air bag 14 and electromagnetic proportion relief valve 15 are separately positioned on top board 16, the top of described taking-up device 6 is connected with the piston rod of hydraulic actuating cylinder 5, the bottom of taking-up device 6 is connected with safety rope 7, the other end of safety rope 7 be worn on miner 9 safety strap 8 with it and be connected, described safety strap 8 comprises shoulder belt and the bottom bands of trouser legs, the waistband of miner 9 is connected with between shoulder belt and the bottom bands of trouser legs, the back channel telescopic buckle of shoulder belt is connected with safety rope 7.Described hydraulic actuating cylinder 5, electromagnetic proportion relief valve 15 and the complete installation of taking-up device 6, the quantity that its quantity holds miner 9 with the position be arranged on below top board 16 according to cage 10 is determined with the position of standing.Described hydraulic actuating cylinder 5 is single-acting cylinder, and the electromagnetic proportion relief valve 15 be connected with hydraulic actuating cylinder 9 is internal control internal drainage type by pass valve.Described taking-up device 6 is centrifugal clutch formula taking-up device, centrifugal clutch formula taking-up device comprises spool 6-4, be located at the ratchet of spool 6-4 both sides, described spool 6-4 is wound with buffer strip 6-1, spool 6-4 is provided with coaxial mounted plane scroll spring 6-5, the below of spool 6-4 is provided with ratchet 6-8, ratchet 6-8 is provided with through the fixing cam 6-6 of sliding pin 6-7, cam 6-6 is provided with can along the sliding pin 6-7 of the notch movement of ratchet 6-8, the outside of plane scroll spring 6-5 is provided with power-transfer clutch fork 6-2, power-transfer clutch fork 6-2 holds for increasing the weight of near spool 6-4 lateral ends, the other end is provided with coil spring 6-3.Institute's displacement sensors 11, speed sensor 12, electromagnetic proportion relief valve 15 are connected with signal processor 13 respectively with the binary pair of gas generant air bag 14; Described gas generant air bag 14 matrix form below top board 16 is arranged, the line number of matrix, columns and spacing hold the quantity of miner 9 according to cage 10 and position is determined.
Hydraulic actuating cylinder 5, electromagnetic proportion relief valve 15 and the complete installation of taking-up device 6, its quantity and installation site are according to quantity and the standing place flexible arrangement below top board 16 of miner 9 in cage 10.Taking-up device 6 adopts centrifugal clutch formula taking-up device, and its spool 6-3 relies on the plane scroll spring of self to provide retracting power, and retracting, can free-extension when normally pulling by miner 9 at hydraulic actuating cylinder 5 underpart of the piston rod when not pulling by miner 9 for buffer strip 6-1; Its clutch lever 6-2 is fixed on spool 6-3 side, when buffer strip 6-1 pulls fast, the quick clickwise of spool 6-3, the end that increases the weight of of clutch lever 6-2 outwards to swing at centrifugal action and stretches out, and then actuating cam 6-4 moves laterally, now ratchet is dragged near reel 6-3 by sliding pin by cam 6-4, until ratchet snaps in the ratchet of spool 6-3, thus making taking-up device 6 be in lockup state, buffer strip 6-1 can not be pulled fast.
Hydraulic actuating cylinder 5 is single-acting cylinder, loculus oil outlet connects electromagnetic proportion relief valve 15, initial situation piston rod is in contraction state, its loculus fills hydraulic oil, when piston rod tension, signal processor 13 regulates the oil pressure relief of electromagnetic proportion relief valve 15, the oil pressure of adjustment hydraulic actuating cylinder 5 loculus, makes piston rod can back pressure draining.Gas generant air bag 14 adopts gas generant formula, multipoint array-type layout is carried out below top board 16, when gas generant air bag 14 triggers, himself gas filled device passes through a large amount of gas such as nitrogen, water vapour of the instantaneous generation of thermal chemical reaction, can generate rectangular-shaped air bag above miner 9, below top board 16.Safety strap 8 adopts full body harness, and fusion is arranged on miner 9 and goes into the well on indispensable waistband, and the back of safety strap 8 is provided with safety rope 7.
Air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety of the present invention guard method, concrete steps are as follows:
A, top board 16 is fixed on above cage 10 inwall, hydraulic actuating cylinder 5, displacement pickup 11, speed sensor 12, signal processor 13, gas generant air bag 14 and electromagnetic proportion relief valve 15 are separately positioned on top board 16, hydraulic actuating cylinder 5 is connected electromagnetic proportion relief valve 15, and be connected on the piston rod of hydraulic actuating cylinder 5 by the buffer strip 6-1 of taking-up device 6, then the binary pair of displacement pickup 11, speed sensor 12, electromagnetic proportion relief valve 15 and gas generant air bag 14 is connected to signal processor 13;
B, miner 9 have dressed safety strap 8 and have entered after in cage 10, the safety rope 7 at miner 9 back is connected to taking-up device 6 bottom tail end, stand by immediately below corresponding hydraulic actuating cylinder 5 axis subsequently, under the retracting power effect of the plane scroll spring 6-3 of taking-up device 6, buffer strip 6-1, safety rope 7, safety strap 8 are installed fixed predetermincd tension and are tightened up;
C, cage 10 are rising or in the operational process of transferring, signal processor 13 by displacement pickup 11 and speed sensor 12 respectively Real-time Collection cage 10 be arranged in height H and the running velocity V of hoistway;
Operation proposed by d, cage 10, when point station higher than setting of the height H of cage 10, judges overwind trouble occurs, the pulleying speed V ' that the cage 10 that now signal processor 13 records now is carried;
E, when there is pulleying, if pulleying speed V ' cage 10 slow down latter end creeper speed scope 0.1 ~ 0.5m/s in time, then be judged to be low speed overwind trouble, cage 10 upwards slides along cage guide rope 2 low speed, finally stop under vertical shaft hoist self holds the effect of the steady tank arrangement of tank, in the process: the braking deceleration of cage 10 is lower, gas generant air bag 14 does not trigger, first miner 9 has upper punch by a small margin under the effect of inertia, then come back on cage 10 base under the effect of deadweight, first taking-up device 6 has small size retracting, then the locking when pulling downwards fast, the oil pressure relief of hydraulic actuating cylinder 5 loculus oil pressure out of reach electromagnetic proportion relief valve 15, now hydraulic actuating cylinder 5, buffer strip 6-1, taking-up device 6, safety rope 7, lockup state is presented due to the locking of taking-up device 6 between safety strap 8 and miner 9, safety rope 7 pulls the midstance kept relative stability when safety strap 8 makes miner 9 fall after rise.Now buffer strip 6-1 is pulled downwards fast, spool 6-4 fast rotational, the end that increases the weight of of power-transfer clutch fork 6-2 outwards to swing at centrifugal action and stretches out, power-transfer clutch fork 6-2 compression coil spring 6-3, and then actuating cam 6-6 moves laterally, now ratchet 6-8 is dragged near reel 6-4 by sliding pin 6-7 along notch by cam 6-6, until ratchet 6-6 snaps in the ratchet of spool 6-4, taking-up device 6 is made to be in lockup state, buffer strip 6-1 can not continue to extract out from taking-up device 6, the miner 9 of low speed undershoot is under the effect of safety strap 8, safety rope 7, buffer strip 6-1 pulls hydraulic actuating cylinder 5 piston rod, at this moment due to the oil pressure relief of hydraulic actuating cylinder 5 rod chamber oil pressure out of reach electromagnetic proportion relief valve 15, thus hydraulic actuating cylinder 5 piston rod can not be drawn out, thus remain stable midstance when miner 9 is fallen after rise, effectively prevent low speed pulleying from causing damaging of miner and tumble injury,
When f, generation pulleying, if pulleying speed V ' cage 10 slow down latter end creeper speed scope 0.5m/s in time, then be judged to be high speed overwind trouble, cage 10 is along cage guide rope 2 high speed upper punch, finally stop rapidly in the limited buffer distance of vertical shaft hoist well headroom, in the process: the braking deceleration of cage 10 is larger, signal processor 13 is according to the pulleying speed V ' of now cage 10, with reference to the safe buffering maximum deceleration a of miner 9, calculate the braking oil pressure P that hydraulic actuating cylinder 5 needs to provide, i.e. the overflow oil pressure of electromagnetic proportion relief valve:
P＝m×a/s
Wherein: m is the default body weight of miner 9, s is the oil pressure active area of hydraulic actuating cylinder 5 rod chamber,
Automatically the overflow oil pressure of electromagnetic proportion relief valve 15 is set up by signal processor 13, signal processor 13 traps gas propellant air bag 14, himself gas filled device passes through a large amount of nitrogen of the instantaneous generation of thermal chemical reaction, the gases such as water vapour form column air bag, column air bag in matrix arrangement extrudes mutually, final above miner 9, rectangular-shaped air bag is generated below top board 16, first miner 9 impacts on air bag under the effect of inertia, fall fast under the effect of deadweight subsequently, first taking-up device 6 furls with during miner's 9 upper punch, then the locking when pulling downwards fast, hydraulic actuating cylinder 5, buffer strip 6-1, taking-up device 6, safety rope 7, lockup state can be presented because of the locking of taking-up device 6 between safety strap 8 and miner 9, buffer strip 6-1 pulls hydraulic actuating cylinder 5 piston rod, the oil pressure relief that the little cavity pressure of hydraulic actuating cylinder 5 exceedes electromagnetic proportion relief valve 15 starts back pressure draining, the piston rod of hydraulic actuating cylinder 5 starts to decline, now miner 9 relies on the braking force that hydraulic actuating cylinder 5 provides in falling process, rely on the safety strap 8 dressed, progressively stopping can be decelerated in the buffer deceleration degree a of safety, thus the stop rapidly that miner 9 can be avoided to bring out because of high speed pulleying and head impact are to cage 10 inwall top.Now buffer strip 6-1 is pulled downwards fast, spool 6-4 fast rotational, the end that increases the weight of of power-transfer clutch fork 6-2 outwards to swing at centrifugal action and stretches out, power-transfer clutch fork 6-2 compression coil spring 6-3, and then actuating cam 6-6 moves laterally, now ratchet 6-8 is dragged near reel 6-4 by sliding pin 6-7 along notch by cam 6-6, until ratchet 6-6 snaps in the ratchet of spool 6-4, taking-up device 6 is made to be in lockup state, buffer strip 6-1 can not continue to extract out from taking-up device 6, the miner 9 of low speed undershoot is under the effect of safety strap 8, safety rope 7, buffer strip 6-1 pulls hydraulic actuating cylinder 5 piston rod, now hydraulic actuating cylinder 5 rod chamber oil pressure exceedes the oil pressure relief of electromagnetic proportion relief valve 15, start back pressure draining, hydraulic actuating cylinder 5 piston rod pulls out slowly under the prerequisite providing braking force, make hydraulic actuating cylinder 5 piston rod along buffer strip 6-1, safety rope 7, safety strap 8 pulls miner 9, the existing braking force to miner 9, there is buffer distance again, thus the stop rapidly effectively avoiding miner 9 to bring out because of the pulleying of cage 10 high speed and head impact are to cage 10 inwall top, effectively can reduce again falling process to the impact load to miner 9, impact load is dispersed to the shoulder of miner 9, crotch, reduce the impact to fragile positions such as miner 9 splanchnocoel internal organs and vertebras, thus the life security of available protecting miner 9.
Claims (6)
1. an air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard, is characterized in that: it comprises top board (16), hydraulic actuating cylinder (5), gas generant air bag (14), electromagnetic proportion relief valve (15), taking-up device (6), safety rope (7), safety strap (8), displacement pickup (11), speed sensor (12) and signal processor (13), described top board (16) is arranged on above cage (10) inwall, described hydraulic actuating cylinder (5), displacement pickup (11), speed sensor (12), signal processor (13), gas generant air bag (14) and electromagnetic proportion relief valve (15) are separately positioned on top board (16), the top of described taking-up device (6) is connected with the piston rod of hydraulic actuating cylinder (5), the bottom of taking-up device (6) is connected with safety rope (7), the other end of safety rope (7) be worn on miner (9) safety strap with it (8) and be connected, institute's displacement sensors (11), speed sensor (12), electromagnetic proportion relief valve (15) is connected with signal processor (13) respectively with the binary pair of gas generant air bag (14), described gas generant air bag (14) is arranged in top board (16) below matrix form, and the line number of matrix, columns and spacing hold the quantity of miner (9) according to cage (10) and position is determined.
2. air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard according to claim 1; it is characterized in that: described hydraulic actuating cylinder (5), electromagnetic proportion relief valve (15) and taking-up device (6) complete installation, the quantity that its quantity and the position being arranged on top board (16) below hold miner (9) according to cage (10) is determined with the position of standing.
3. air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard according to claim 1, it is characterized in that: described taking-up device (6) is centrifugal clutch formula taking-up device, centrifugal clutch formula taking-up device comprises spool (6-4), be located at the ratchet of spool (6-4) both sides, described spool (6-4) is wound with buffer strip (6-1), spool (6-4) is provided with coaxial mounted plane scroll spring (6-5), the below of spool (6-4) is provided with ratchet (6-8), ratchet (6-8) is provided with through the fixing cam (6-6) of sliding pin (6-7), cam (6-6) is provided with can along the sliding pin (6-7) of the notch movement of ratchet (6-8), the outside of plane scroll spring (6-5) is provided with power-transfer clutch fork (6-2), power-transfer clutch fork (6-2) is held for increasing the weight of near spool (6-4) lateral ends, the other end is provided with coil spring (6-3).
4. air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard according to claim 1; it is characterized in that: described hydraulic actuating cylinder (5) is single-acting cylinder, the electromagnetic proportion relief valve (15) be connected with hydraulic actuating cylinder (9) is internal control internal drainage type by pass valve.
5. air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety fender guard according to claim 1; it is characterized in that: described safety strap (8) comprises shoulder belt and the bottom bands of trouser legs; be connected with the waistband of miner (9) between shoulder belt and the bottom bands of trouser legs, the back channel telescopic buckle of shoulder belt is connected with safety rope (7).
6. the air bag fluid pressure type vertical shaft hoist overwind trouble occupant safety guard method of device according to claim 1, is characterized in that comprising the steps:
A, top board (16) is fixed on above cage (10) inwall, by hydraulic actuating cylinder (5), displacement pickup (11), speed sensor (12), signal processor (13), gas generant air bag (14) and electromagnetic proportion relief valve (15) are separately positioned on top board (16), hydraulic actuating cylinder (5) is connected electromagnetic proportion relief valve (15), and the buffer strip (6-1) of taking-up device (6) is connected on the piston rod of hydraulic actuating cylinder (5), again by displacement pickup (11), speed sensor (12), the binary pair of electromagnetic proportion relief valve (15) and gas generant air bag (14) is connected to signal processor (13),
B, miner (9) have dressed safety strap (8) and have entered after in cage (10), the safety rope (7) at miner (9) back is connected to taking-up device (6) bottom tail end, stand by immediately below corresponding hydraulic actuating cylinder (5) axis subsequently, under the retracting power effect of the plane scroll spring (6-3) of taking-up device (6), buffer strip (6-1), safety rope (7), safety strap (8) are tightened up;
C, cage (10) are in the operational process risen or transfer, and signal processor (13) is arranged in height H and the running velocity V of hoistway by displacement pickup (11) and speed sensor (12) difference Real-time Collection cage (10);
(10) propose operation for d, cage, when the height H of cage (10) is higher than the point station set, judge overwind trouble occurs, the pulleying speed V ' now signal processor (13) record cage (10) now carried;
If when pulleying speed V ' is in the creeper speed scope 0.1 ~ 0.5m/s of cage (10) deceleration latter end, be judged to be low speed overwind trouble, cage (10) upwards slides along cage guide rope (2) low speed, finally stop under vertical shaft hoist self holds the effect of the steady tank arrangement of tank, in the process: the braking deceleration of cage (10) is lower, gas generant air bag (14) does not trigger, miner (9) first has upper punch by a small margin under the effect of inertia, then come back on cage (10) base under the effect of deadweight, taking-up device (6) first has small size retracting, then buffer strip (6-1) is pulled downwards fast, spool (6-4) fast rotational, the end that increases the weight of of power-transfer clutch fork (6-2) outwards to swing at centrifugal action and stretches out, power-transfer clutch fork (6-2) compression coil spring (6-3), and then actuating cam (6-6) moves laterally, now ratchet (6-8) is dragged near reel (6-4) by sliding pin (6-7) along notch by cam (6-6), until ratchet (6-6) snaps in the ratchet of spool (6-4), taking-up device (6) is made to be in lockup state, buffer strip (6-1) can not continue to extract out from taking-up device (6), the miner (9) of low speed undershoot is under the effect of safety strap (8), safety rope (7), buffer strip (6-1) pulls hydraulic actuating cylinder (5) piston rod, at this moment due to the oil pressure relief of hydraulic actuating cylinder (5) rod chamber oil pressure out of reach electromagnetic proportion relief valve (15), thus hydraulic actuating cylinder (5) piston rod can not be drawn out, thus remain stable midstance when miner (9) is fallen after rise, effectively prevent low speed pulleying from causing damaging of miner and tumble injury,
If when pulleying speed V ' is in the creeper speed scope 0.5m/s of cage (10) deceleration latter end, be judged to be high speed overwind trouble, cage (10) is along cage guide rope (2) high speed upper punch, finally stop rapidly in the limited buffer distance of vertical shaft hoist well headroom, in the process: the braking deceleration of cage (10) is larger, signal processor (13) is according to the pulleying speed V ' of now cage (10), with reference to the safe buffering maximum deceleration a of miner (9), calculate the braking oil pressure P that hydraulic actuating cylinder (5) needs to provide, the i.e. overflow oil pressure of electromagnetic proportion relief valve:
P＝m×a/s
Wherein: m is the default body weight of miner (9), s is the oil pressure active area of hydraulic actuating cylinder (5) rod chamber,
Automatically the overflow oil pressure of electromagnetic proportion relief valve (15) is set up by signal processor (13), signal processor (13) traps gas propellant air bag (14), himself gas filled device passes through a large amount of nitrogen of the instantaneous generation of thermal chemical reaction, the gases such as water vapour form column air bag, column air bag in matrix arrangement extrudes mutually, finally in miner (9) top, top board (16) below generates rectangular-shaped air bag, miner (9) first impacts on air bag under the effect of inertia, fall fast under the effect of deadweight subsequently, taking-up device (6) first furls with during miner (9) upper punch, then buffer strip (6-1) is being pulled downwards fast, spool (6-4) fast rotational, the end that increases the weight of of power-transfer clutch fork (6-2) outwards to swing at centrifugal action and stretches out, power-transfer clutch fork (6-2) compression coil spring (6-3), and then actuating cam (6-6) moves laterally, now ratchet (6-8) is dragged near reel (6-4) by sliding pin (6-7) along notch by cam (6-6), until ratchet (6-6) snaps in the ratchet of spool (6-4), taking-up device (6) is made to be in lockup state, buffer strip (6-1) can not continue to extract out from taking-up device (6), the miner (9) of low speed undershoot is under the effect of safety strap (8), safety rope (7), buffer strip (6-1) pulls hydraulic actuating cylinder (5) piston rod, now hydraulic actuating cylinder (5) rod chamber oil pressure exceedes the oil pressure relief of electromagnetic proportion relief valve (15), start back pressure draining, hydraulic actuating cylinder (5) piston rod pulls out slowly under the prerequisite providing braking force, make hydraulic actuating cylinder (5) piston rod along buffer strip (6-1), safety rope (7), safety strap (8) pulls miner (9), the existing braking force to miner (9), there is buffer distance again, thus the stop rapidly effectively avoiding miner (9) to bring out because of cage (10) high speed pulleying and head impact are to cage (10) inwall top, effectively can reduce again falling process to the impact load to miner (9), impact load is dispersed to the shoulder of miner (9), crotch, reduce the impact to fragile positions such as miner (9) splanchnocoel internal organs and vertebras, thus the life security of available protecting miner (9).
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| CN105712146A (en) * | 2016-03-23 | 2016-06-29 | 安徽瑞格电梯服务股份有限公司 | Lift car falling protection equipment |
| WO2017071080A1 (en) * | 2015-10-28 | 2017-05-04 | 中国矿业大学 | Miner safety protection device and method for vertical shaft elevator cage accident prevention |
| CN108263924A (en) * | 2016-12-30 | 2018-07-10 | 天津豪雅科技发展有限公司 | A kind of elevator shock-absorbing device |
| CN109270222A (en) * | 2018-10-22 | 2019-01-25 | 长沙开元仪器有限公司 | A kind of elemental analyser automatically opening and closing laying out apparatus |
| CN109999382A (en) * | 2019-03-27 | 2019-07-12 | 浙江省建工集团有限责任公司 | A kind of security protection system of movable self-locking |
| CN114684741A (en) * | 2022-04-20 | 2022-07-01 | 南通市通州区吉安建筑机械有限公司 | Safety protection type lifting machine |
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| CN116556477A (en) * | 2023-06-19 | 2023-08-08 | 广州市广益不锈钢制品有限公司 | Modular assembled cold and hot water same-pressure water supply device |
| CN116556477B (en) * | 2023-06-19 | 2024-08-09 | 广州市广益不锈钢制品有限公司 | Modular assembled cold and hot water same-pressure water supply device |
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