CN112320547B - Safety protection device and protection method for mine hoist - Google Patents
Safety protection device and protection method for mine hoist Download PDFInfo
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- CN112320547B CN112320547B CN202011293385.7A CN202011293385A CN112320547B CN 112320547 B CN112320547 B CN 112320547B CN 202011293385 A CN202011293385 A CN 202011293385A CN 112320547 B CN112320547 B CN 112320547B
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- box body
- plate
- fixedly connected
- sliding
- movable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/04—Mining-hoist cars or cages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
Abstract
A safety protection device and a protection method for a mine hoist belong to the field of passenger protection devices of mine hoists. The top end of the sleeve I is fixedly connected to the lower end of the top plate; the screw I is in threaded connection with the sleeve I; the safety vest is fixedly connected to the side faces of the screw I and the sleeve II through bonding; the lower end of the sleeve II is connected with a screw rod II through threads; the safety trousers are fixedly connected to the screw II through adhesion; the warning device comprises a warning lamp, a lead, two conductive blocks I, two conductive blocks II and a power supply. When the unexpected tenesmus of box, through the slow tenesmus speed that reduces the box of dual speed reduction until stopping, prevent that the box from stopping suddenly and causing the injury to the passenger in the box to this device can also mention the passenger through protection device, makes the passenger break away from the bottom plate, and spring I, spring II provide the shock attenuation for the passenger simultaneously, reduce the box and drop and cause the injury to the passenger with the huge impact force that the contact of well bottom surface led to the fact.
Description
Technical Field
The invention relates to a safety protection device and a safety protection method for a mine hoist, and belongs to the field of passenger protection devices of mine hoists.
Background
A mine hoist, sometimes also called a mine elevator, is a special form of elevator, which can also be regarded as a simple hoist. In the engineering of mine transportation of people and things, a mine hoist is a very important transportation tool. Compared with the ground, the mine, especially the underground condition and the working environment are worse, so the safety of the mine hoist must be ensured, and the currently used mine elevator is rarely provided with a protection device, so that the mine elevator has great casualties when accidents happen.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a safety protection device and a protection method for a mine hoist.
The invention achieves the purpose, and adopts the following technical scheme:
a safety protection device for a mine hoist comprises a car, two speed reducing devices and a movable device; the lift car comprises a box body, two sliding devices, a hoisting rope, a spring I, a top plate, a plurality of protection devices, a bottom plate, a warning device, a guardrail and a spring II; the box body is a rectangular frame, the front end and the rear end of the box body are movably connected with guardrails through hinges, and the top end of the box body is fixedly connected with a hoisting rope; two slide ways are symmetrically arranged on two sides of the box body; each sliding device comprises a sliding plate, a movable block, a connecting rod, a power device and a limiting block; the sliding plate is in sliding fit with the slideway; one end of the movable block is connected to the side surface of the sliding plate through a hinge, and the other end of the movable block is connected with a connecting rod through a hinge; the limiting block is fixedly connected to the outer side of the sliding plate and is positioned above the movable block; when the movable block is in a horizontal state, the upper end surface of the movable block is contacted with the limiting block; the power device is hinged at the upper end of the connecting rod; through holes are symmetrically formed in two sides of the box body; the through hole is positioned at the upper end of the slide way and is communicated with the slide way; the top plate is positioned in the lift car, sliding blocks are arranged on two sides of the top plate, and the sliding blocks are in sliding fit with the through holes; one end of the power device is connected to the sliding block on the side surface of the top plate through a hinge; the upper end of the spring I is fixedly connected to the top end of the interior of the box body, and the lower end of the spring I is fixedly connected to the top plate; each protection device is fixedly connected to the lower end of the top plate; each protection device comprises a sleeve I, a screw I, a safety vest, a sleeve II, a screw II and safety trousers; the top end of the sleeve I is fixedly connected to the lower end of the top plate; the screw I is in threaded connection with the sleeve I; the safety vest is fixedly connected to the side faces of the screw I and the sleeve II through bonding; the lower end of the sleeve II is connected with a screw rod II through threads; the safety trousers are fixedly connected to the screw II through adhesion; the bottom plate is positioned in the box body, and the lower end of the bottom plate is fixedly connected with a spring II; the lower end of the spring II is fixedly connected to the inner bottom surface of the box body; the warning device comprises a warning lamp, a lead, two conductive blocks I, two conductive blocks II and a power supply; the power supply is fixedly connected to the bottom surface of the box body; the two conductive blocks I are fixedly connected to the bottom surface of the box body, one conductive block I is connected with a power supply through a wire, and the other conductive block I is connected with the warning lamp through a wire; the warning lamp is connected to the upper end of the bottom plate through a bolt and is connected with the negative electrode of the power supply through a lead; the conductive block II is fixedly connected to the rubber pad through adhesion, and the rubber pad is fixedly connected to the lower end of the bottom plate through adhesion; the side surface of the box body close to the bottom end is symmetrically provided with a sliding chute I, and the side surface of the box body close to the top end is symmetrically provided with a sliding chute II;
the two speed reducing devices are symmetrically arranged on two sides of the box body; the movable device is arranged at the upper end of the box body;
a method of protecting a safety protection device for a mine hoist, the method comprising:
1) the safety vest and the safety trousers are worn by the passengers when the guardrails are opened, and the heights of the safety vest and the safety trousers are adjusted by rotating the screw rod I and the screw rod II according to the heights of the passengers;
2) when the passenger in the box body is too much and overweight, the bottom plate moves downwards to drive the conductive block II to be in contact with the conductive block I, the circuit is communicated, and the warning lamp shines to remind overweight; closing the guardrail after normal loading; then the box body is moved through the hauling rope;
3) when the dragging rope slips or breaks, the box body rapidly descends, the air flow rate at the two sides of the box body is increased relatively to the air flow rate in a normal motion state, so that the air flow rate is increased, the air exhaust amount of the exhaust holes in the vent plate is not changed in unit time, and the residual air flows to the two sides of the vent plate and supports the umbrella cloth;
4) after the umbrella cloth is supported, the ventilation board is driven to move upwards relative to the box body due to air resistance; when the movable block moves towards the horizontal state, the movable block and the connecting block push the sliding plate towards the direction far away from the box body, the sliding plate pushes the U-shaped plate to move, so that the roller on the U-shaped plate abuts against the inner wall of the well, friction between the roller and the well provides resistance for the box body, and the falling speed is reduced;
5) when the movable block moves to a horizontal state, the upper end face of the movable block is in contact with the limiting block, the umbrella cloth continues to drive the outer frame to move upwards, the connecting rod drives the movable connecting block to further drive the connecting block to move upwards, the connecting block drives the top plate to move upwards, the top plate drives the protection device to move upwards, and the two feet of a passenger are separated from the bottom plate;
6) when the passengers' feet are separated from the bottom plate, the distance between the umbrella cloth and the box body is the largest, the umbrella cloth provides resistance for the box body, and the falling speed of the box body is slowed down.
Compared with the prior art, the invention has the beneficial effects that: when the box body accidentally drops, the dropping speed of the box body is slowly reduced through double deceleration until the box body stops, so that the damage to passengers in the box body caused by the sudden stop of the box body is prevented, the device can lift the passengers through the protection device to enable the passengers to be separated from the bottom plate, and meanwhile, the springs I and II provide shock absorption for the passengers, so that the damage to the passengers caused by the huge impact force caused by the contact between the dropping of the box body and the bottom surface of the well is reduced.
Drawings
FIG. 1 is a front view of a safety shield for a mine hoist of the present invention;
fig. 2 is a front view of the car of a safety device for a mine hoist of the present invention;
FIG. 3 is a front view of the power plant of the safety shield for a mine hoist of the present invention;
fig. 4 is a front view of the reduction gear of the safety device for a mine hoist of the present invention;
fig. 5 is a front view of a mobile device of a safety guard for a mine hoist of the present invention;
fig. 6 is a bottom view of a mobile device of a safety shield for a mine hoist of the present invention;
fig. 7 is a circuit diagram of a warning device of a safety protection device for a mine hoist of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 7, the present embodiment describes a safety protection device for a mine hoist, including a car 1, two speed reducers 2, and a movable device 3; the lift car 1 comprises a box body 1-1, two sliding devices, a hoisting rope 1-9, a spring I1-10, a top plate 1-12, a plurality of protection devices, a bottom plate 1-20, a warning device, a guardrail 1-25 and a spring II 1-26; the box body 1-1 is a rectangular frame, the front end and the rear end of the box body 1-1 are movably connected with guardrails 1-25 through hinges, and the top end of the box body 1-1 is fixedly connected with a hoisting rope 1-9; two sides of the box body 1-1 are symmetrically provided with two slideways 1-3; each sliding device comprises a sliding plate 1-4, a movable block 1-5, a connecting rod 1-6, a power device 1-7 and a limiting block 1-27; the sliding plate 1-4 is in sliding fit with the slideway 1-3; one end of the movable block 1-5 is connected to the side surface of the sliding plate 1-4 through a hinge, and the other end of the movable block 1-5 is connected with a connecting rod 1-6 through a hinge; the limiting blocks 1-27 are fixedly connected to the outer sides of the sliding plates 1-4, and the limiting blocks 1-27 are positioned above the movable blocks 1-5; when the movable blocks 1-5 are in a horizontal state, the upper end surfaces of the movable blocks 1-5 are in contact with the limiting blocks 1-27; the power device 1-7 is hinged at the upper end of the connecting rod 1-6; through holes 1-11 are symmetrically formed in two sides of the box body 1-1; the through holes 1-11 are positioned at the upper ends of the slideways 1-3, and the through holes 1-11 are communicated with the slideways 1-3; the top plate 1-12 is positioned in the lift car, sliding blocks are arranged on two sides of the top plate 1-12 and are in sliding fit with the through holes 1-11; one end of the power device 1-7 is connected to the sliding block on the side surface of the top plate 1-12 through a hinge; the upper end of the spring I1-10 is fixedly connected to the top end of the interior of the box body 1-1, and the lower end of the spring I1-10 is fixedly connected to the top plate 1-12; each protection device is fixedly connected to the lower end of the top plate 1-12; each protection device comprises a sleeve I1-13, a screw I1-14, a safety vest 1-15, a sleeve II 1-16, a screw II 1-17 and safety trousers 1-18; the top ends of the sleeves I1-13 are fixedly connected to the lower ends of the top plates 1-12; the screws I1-14 are in threaded connection with the sleeves I1-13; the safety vest 1-15 is fixedly connected to the side faces of the screw rods I1-14 and the sleeves II 1-16 through bonding; the lower ends of the sleeves II 1-16 are connected with screws II 1-17 through threads; the safety pants 1-18 are fixedly connected to the screws II 1-17 through adhesion; the bottom plate 1-20 is positioned inside the box body 1-1, and the lower end of the bottom plate 1-20 is fixedly connected with a spring II 1-26; the lower end of the spring II 1-26 is fixedly connected to the inner bottom surface of the box body 1-1; the warning device comprises warning lamps 1-19, leads 1-21, two conductive blocks I1-22, conductive blocks II 1-23 and a power supply 1-24; the power supply 1-24 is fixedly connected to the bottom surface of the box body 1-1, the voltage of the power supply 1-24 is 24V, and the current is 10 mA; the two conductive blocks I1-22 are fixedly connected to the bottom surface of the box body 1-1, one conductive block I1-22 is connected with a power supply 1-24 through a lead 1-21, and the other conductive block I1-22 is connected with a warning lamp 1-19 through a lead 1-21; the warning lamps 1-19 are connected to the upper ends of the base plates 1-20 through bolts, and the warning lamps 1-19 are connected with the negative electrodes of the power supplies 1-24 through leads 1-21; the conductive blocks II 1-23 are fixedly connected to the rubber pads through bonding, and the rubber pads are fixedly connected to the lower ends of the bottom plates 1-20 through bonding; the side surface of the box body 1-1, which is close to the bottom end, is symmetrically provided with a sliding chute I1-2, and the side surface of the box body 1-1, which is close to the top end, is symmetrically provided with a sliding chute II 1-8;
the two speed reducing devices 2 are symmetrically arranged on two sides of the box body 1-1; the movable device 3 is arranged at the upper end of the box body 1-1.
The second embodiment is as follows: as shown in fig. 3, the present embodiment is further described with respect to the first embodiment, and each of the power devices 1 to 7 includes a connecting rod 1 to 7-1, a connecting block 1 to 7-2, and a movable connecting block 1 to 7-4; the lower end of the connecting rod 1-7-1 is connected to the movable connecting block 1-7-4 through a hinge; one end of the connecting block 1-7-2 is connected to the sliding block on the side face of the top plate 1-12 through a hinge, the other end of the connecting block 1-7-2 is connected to the top end of the connecting rod 1-6 through a hinge, and an annular groove 1-7-3 is formed in the connecting block 1-7-2; the movable connecting blocks 1-7-4 are in sliding fit with the grooves 1-7-3. The power device 1-7 is used for connecting the movable device 3 with the sliding device, so that the movable device 3 can drive the sliding device to move conveniently, and further the speed reduction device 2 is driven to be in close contact with a well, and speed reduction is provided for the box body 1-1.
The third concrete implementation mode: as shown in FIG. 2, the present embodiment is further described with respect to the first embodiment, when the springs II 1-26 are compressed to the shortest, the bottom plate 1-20 drives the conductive blocks II 1-23 to move to between the two conductive blocks I1-22, and the circuit is connected. Preventing the car 1 from overloading.
The fourth concrete implementation mode: as shown in fig. 4, the present embodiment is further explained for the first embodiment, and each of the speed reducing devices 2 includes a U-shaped plate 2-1, two springs iii 2-2, a plurality of rollers 2-4, and a sliding plate 2-5; the opening of the U-shaped plate 2-1 is arranged towards the box body 1-1, and two ends of the U-shaped plate 2-1 are respectively in sliding fit with the sliding groove I1-2 and the sliding groove II 1-8; one end of each of the two springs III 2-2 is fixedly connected to the U-shaped plate 2-1, and the other end of each of the two springs III 2-2 is fixedly connected to the corresponding sliding chute I1-2 and the corresponding sliding chute II 1-8; the top end of the U-shaped plate 2-1 is provided with a rectangular hole 2-3; the rollers 2-4 are connected to the U-shaped plate 2-1 through bearings; the sliding plate 2-5 is in sliding fit with the U-shaped plate 2-1, and the side surface of the sliding plate 2-5 adjacent to the roller 2-4 is provided with a plurality of arc-shaped grooves 2-6; the rollers 2-4 are in sliding fit with the arc-shaped grooves 2-6; the connecting blocks 1-7-2 and the movable blocks 1-5 are in contact with the sliding plates 2-5, and one ends of the connecting blocks 1-7-2 and the movable blocks 1-5, which are close to the sliding plates 2-5, are inclined downwards when the box body 1-1 is in a passenger transportation state. The speed of the box body 1-1 is reduced by the speed reducer 2 through sliding friction between the rollers 2-4 and the shaft, the arc-shaped grooves 2-6 are designed to be arc-shaped, so that the arc-shaped grooves 2-6 and the rollers 2-4 have larger contact areas, the friction between the rollers 2-4 and the arc-shaped grooves 2-6 is increased, and the rolling condition of the rollers 2-4 on the inner wall of the shaft is reduced.
The fifth concrete implementation mode: as shown in fig. 4, this embodiment is further described with respect to the first embodiment, the rollers 2-4 are made of rubber, and the surfaces of the rollers 2-4 are rough. The friction between the rollers 2-4 and the inner wall of the shaft and the arc-shaped grooves 2-6 is increased.
The sixth specific implementation mode: as shown in fig. 5-6, the present embodiment is further described with respect to the first embodiment, in which the movable device 3 includes an arc-shaped housing 3-1, an outer frame 3-2, a ventilation plate 3-3, a limiting rod 3-4, an umbrella cloth 3-5, and a circular ring 3-6; the outer end of the outer frame 3-2 is fixedly connected with an arc-shaped shell 3-1, the inner side of the outer frame 3-2 is fixedly connected with a ventilation plate 3-3, and the outer frame 3-2 is also provided with a limiting hole; the lower end of the limiting rod 3-4 is fixedly connected to the box body 1-1, and the upper end of the limiting rod 3-4 is in sliding fit with the limiting hole; the middle of the umbrella cloth 3-5 is provided with a circular ring 3-6, and the umbrella cloth 3-5 is fixedly connected with the inner side of the vent plate 3-3; a plurality of vent holes are formed in the vent plate 3-3; the hoisting ropes 1-9 are positioned in the circular rings 3-6; the connecting rod 1-7-1 is fixedly connected to the lower end of the outer frame 3-2. The purpose of the vent plate 3-3 is to enable the air flow to be discharged from the vent hole when the box body 1-1 operates normally; the purpose of the umbrella cloth 3-5 is that when the box body 1-1 is accidentally dropped rapidly, the umbrella cloth 3-5 can be supported by the airflow to provide speed reduction for the box body 1-1 and drive the sliding device to be unfolded.
The seventh embodiment: as shown in fig. 5-6, the present embodiment is further described with respect to the first embodiment, in a state that the box body 1-1 is transporting passengers normally, the air flow generated by the movement of the box body 1-1 is equal to the discharge amount of air on the vent holes of the vent plate 3-3.
The specific implementation mode is eight: as shown in fig. 5 to 6, this embodiment is further described as a first embodiment, and the umbrella cloth 3 to 5 is made of polyethylene fibers.
The specific implementation method nine: the embodiment describes a protection method of a safety protection device for a mine hoist, and the protection method comprises the following steps:
1) opening the guardrails 1-25, wearing the safety vest 1-15 and the safety trousers 1-18 by passengers, rotating the screw rods I1-14 and the screw rods II 1-18 according to the height of each person, and adjusting the heights of the safety vest 1-15 and the safety trousers 1-18;
2) when the box body 1-1 is overweight due to too many passengers, the bottom plate 1-20 moves downwards to drive the conductive blocks II 1-23 to be in contact with the conductive blocks I1-22, the circuit is communicated, and the warning lamps 1-19 are lightened to remind overweight; closing the guardrails 1-25 after the load is normal; then the box body 1-1 is moved through the hauling rope 1-9;
3) when the hauling rope 1-9 slips or breaks, the box body 1-1 descends rapidly, the air flow rate at the two sides of the box body 1-1 is increased relatively to the normal movement state, so the air flow rate is increased, the air exhaust amount of the air exhaust holes in the vent plate 3-3 in unit time is not changed, so the residual air flows to the two sides of the vent plate 3-3, and the umbrella cloth 3-5 is supported;
4) after the umbrella cloth 3-5 is supported, the air resistance drives the vent plate 3-3 to move upwards relative to the box body 1-1; the ventilation plate 3-3 drives the outer frame 3-2 and the arc-shaped shell 3-1 to move upwards, the outer frame 3-2 drives the connecting rod 1-7-1 to move upwards, the connecting rod 1-7-1 drives the movable connecting block 1-7-4 and further drives the connecting block 1-7-2 to move upwards, the connecting block 1-7-2 drives the connecting rod 1-6 to move and further drives the movable block 1-5 to move, when the movable block 1-5 moves towards the horizontal state, the movable block 1-5 and the connecting block 1-7-2 push the sliding plate 2-5 towards the direction far away from the box body 1-1, the sliding plate 2-5 pushes the U-shaped plate 2-1 to move, so that the rollers 2-4 on the U-shaped plate 2-1 abut against the inner wall of a well, and the friction between the rollers 2-4 and the well provides resistance for the box body 1-1, slowing down the falling speed;
5) when the movable block 1-5 moves to a horizontal state, the upper end face of the movable block 1-5 is in contact with the limiting block 1-27, the umbrella cloth 3-5 continues to drive the outer frame 3-2 to move upwards, the connecting rod 1-7-1 drives the movable connecting block 1-7-4 and further drives the connecting block 1-7-2 to move upwards, further the connecting block 1-7-2 drives the top plate 1-12 to move upwards, and the top plate 1-12 drives the protection device to move upwards, so that the feet of passengers are separated from the bottom plate 1-20;
6) when the feet of the passengers are separated from the bottom plates 1-20, the distance between the umbrella cloth 3-5 and the box body 1-1 is the largest, and the umbrella cloth 3-5 provides resistance for the box body 1-1 to slow down the falling speed of the box body 1-1.
The working principle of the invention is as follows: the guardrails are opened 1 to 25, the passengers wear the safety vests 1 to 15 and the safety trousers 1 to 18, the screws I1 to 14 and the screws II 1 to 18 are rotated according to the heights of the passengers, and the heights of the safety vests 1 to 15 and the safety trousers 1 to 18 are adjusted, so that the safety vests and the safety trousers are convenient for the passengers with different heights to use; when the box body 1-1 is overweight due to too many passengers, the bottom plate 1-20 moves downwards to drive the conductive blocks II 1-23 to be in contact with the conductive blocks I1-22, the circuit is communicated, and the warning lamps 1-19 are lightened to remind overweight; closing the guardrails 1-25 after the load is normal; then the box body 1-1 is moved through the hauling rope 1-9;
when the hauling rope 1-9 slips or breaks, the box body 1-1 descends rapidly, the air flow rate at the two sides of the box body 1-1 is increased relatively under the normal motion state, so the air flow rate is increased, the air exhaust amount of the air exhaust holes in the vent plate 3-3 in unit time is not changed, so part of air flows out through the vent holes, the other part of residual air flows to the two sides of the vent plate 3-3 and supports the umbrella cloth 3-5, and the vent plate 3-3 is driven to move upwards relatively to the box body 1-1 by air resistance after the umbrella cloth 3-5 is supported; the ventilation plate 3-3 drives the outer frame 3-2 and the arc-shaped shell 3-1 to move upwards, the outer frame 3-2 drives the connecting rod 1-7-1 to move upwards, the connecting rod 1-7-1 drives the movable connecting block 1-7-4 and further drives the connecting block 1-7-2 to move upwards, the connecting block 1-7-2 drives the connecting rod 1-6 to move and further drives the movable block 1-5 to move, when the movable block 1-5 moves towards the horizontal state, the movable block 1-5 and the connecting block 1-7-2 push the sliding plate 2-5 towards the direction far away from the box body 1-1, the sliding plate 2-5 pushes the U-shaped plate 2-1 to move, so that the roller 2-4 on the U-shaped plate 2-1 abuts against the inner wall of a well, and simultaneously, because the roller 2-4 is in close contact with the sliding plate 2-5, therefore, the sliding plate 2-5 limits the rollers 2-4 to rotate, so that the rollers 2-4 slide on the inner wall of the shaft, friction between the rollers 2-4 and the shaft provides resistance for the box body 1-1, and the falling speed is reduced; when the movable block 1-5 moves to the horizontal state, the upper end face of the movable block 1-5 contacts with the limiting block 1-27, so that the movable block 1-5 can not continuously rotate, the distance between the connecting rod 1-6 and the sliding plate 1-4 is unchanged, the connecting block 1-7-2 can not continuously rotate, the umbrella cloth 3-5 continuously drives the outer frame 3-2 to move upwards, the connecting rod 1-7-1 drives the movable connecting block 1-7-4 to further drive the connecting block 1-7-2 to move upwards, the connecting block 1-7-2 drives the top plate 1-12 to move upwards, the top plate 1-12 drives the protection device to move upwards, the protection device enables the feet of passengers to be separated from the bottom plate 1-20, when the box body 1-1 collides with the bottom surface of the hoistway to suddenly stop, the passenger moves downwards under the action of inertia to drive the protection device to move downwards, so that the top plate 1-12 is driven to move downwards, the top plate 1-12 drives the springs I1-10 to stretch to provide buffer for the passenger, and after the feet of the passenger contact the bottom plate 1-20, the springs II 1-26 at the lower end of the bottom plate 1-20 provide buffer for the passenger, so that the injury to the passenger is reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a safety arrangement for mine hoist which characterized in that: comprises a lift car (1), two speed reducing devices (2) and a movable device (3); the lift car (1) comprises a box body (1-1), two sliding devices, a hauling rope (1-9), a spring I (1-10), a top plate (1-12), a plurality of protection devices, a bottom plate (1-20), a warning device, a guardrail (1-25) and a spring II (1-26); the box body (1-1) is a rectangular frame, the front end and the rear end of the box body (1-1) are movably connected with guardrails (1-25) through hinges, and the top end of the box body (1-1) is fixedly connected with a hauling rope (1-9); two sides of the box body (1-1) are symmetrically provided with two slide ways (1-3); each sliding device comprises a sliding plate (1-4), a movable block (1-5), a connecting rod (1-6), a power device (1-7) and a limiting block (1-27); the sliding plate (1-4) is in sliding fit with the slideway (1-3); one end of the movable block (1-5) is connected to the side surface of the sliding plate (1-4) through a hinge, and the other end of the movable block (1-5) is connected with a connecting rod (1-6) through a hinge; the limiting blocks (1-27) are fixedly connected to the outer sides of the sliding plates (1-4), and the limiting blocks (1-27) are positioned above the movable blocks (1-5); when the movable blocks (1-5) are in a horizontal state, the upper end surfaces of the movable blocks (1-5) are in contact with the limiting blocks (1-27); the power device (1-7) is hinged at the upper end of the connecting rod (1-6); through holes (1-11) are symmetrically formed in two sides of the box body (1-1); the through holes (1-11) are positioned at the upper ends of the slideways (1-3), and the through holes (1-11) are communicated with the slideways (1-3); the top plate (1-12) is positioned in the lift car, sliding blocks are arranged on two sides of the top plate (1-12), and the sliding blocks are in sliding fit with the through holes (1-11); one end of the power device (1-7) is connected to the sliding block on the side surface of the top plate (1-12) through a hinge; the upper end of the spring I (1-10) is fixedly connected to the top end of the interior of the box body (1-1), and the lower end of the spring I (1-10) is fixedly connected to the top plate (1-12); each protection device is fixedly connected to the lower end of the top plate (1-12); each protection device comprises a sleeve I (1-13), a screw I (1-14), a safety vest (1-15), a sleeve II (1-16), a screw II (1-17) and safety trousers (1-18); the top end of the sleeve I (1-13) is fixedly connected to the lower end of the top plate (1-12); the screw I (1-14) is in threaded connection with the sleeve I (1-13); the safety vest (1-15) is fixedly connected to the side surfaces of the screw I (1-14) and the sleeve II (1-16) through bonding; the lower end of the sleeve II (1-16) is connected with a screw II (1-17) through threads; the safety pants (1-18) are fixedly connected to the screw rods II (1-17) through adhesion; the bottom plate (1-20) is positioned inside the box body (1-1), and the lower end of the bottom plate (1-20) is fixedly connected with a spring II (1-26); the lower end of the spring II (1-26) is fixedly connected to the inner bottom surface of the box body (1-1); the warning device comprises warning lamps (1-19), leads (1-21), two conductive blocks I (1-22), conductive blocks II (1-23) and a power supply (1-24); the power supply (1-24) is fixedly connected to the bottom surface of the box body (1-1); the two conductive blocks I (1-22) are fixedly connected to the bottom surface of the box body (1-1), one conductive block I (1-22) is connected with a power supply (1-24) through a wire (1-21), and the other conductive block I (1-22) is connected with a warning lamp (1-19) through a wire (1-21); the warning lamps (1-19) are connected to the upper ends of the base plates (1-20) through bolts, and the warning lamps (1-19) are connected with the negative electrodes of the power supplies (1-24) through leads (1-21); the conductive blocks II (1-23) are fixedly connected to the rubber pads through bonding, and the rubber pads are fixedly connected to the lower ends of the bottom plates (1-20) through bonding; the side surface of the box body (1-1) close to the bottom end is symmetrically provided with a sliding chute I (1-2), and the side surface of the box body (1-1) close to the top end is symmetrically provided with a sliding chute II (1-8);
the two speed reducing devices (2) are symmetrically arranged on two sides of the box body (1-1); the movable device (3) is arranged at the upper end of the box body (1-1).
2. The safety arrangement of claim 1, wherein: each power device (1-7) comprises a connecting rod (1-7-1), a connecting block (1-7-2) and a movable connecting block (1-7-4); the lower end of the connecting rod (1-7-1) is connected to the movable connecting block (1-7-4) through a hinge; one end of the connecting block (1-7-2) is connected to the sliding block on the side face of the top plate (1-12) through a hinge, the other end of the connecting block (1-7-2) is connected to the top end of the connecting rod (1-6) through a hinge, and an annular groove (1-7-3) is formed in the connecting block (1-7-2); the movable connecting block (1-7-4) is in sliding fit with the groove (1-7-3).
3. The safety arrangement of claim 1, wherein: when the springs II (1-26) are compressed to the shortest, the bottom plates (1-20) drive the conductive blocks II (1-23) to move between the two conductive blocks I (1-22), and the circuits are communicated.
4. The safety arrangement of claim 2, wherein: each speed reduction device (2) comprises a U-shaped plate (2-1), two springs (2-2), a plurality of rollers (2-4) and a sliding plate (2-5); the opening of the U-shaped plate (2-1) faces the box body (1-1), and two ends of the U-shaped plate (2-1) are respectively in sliding fit with the sliding groove I (1-2) and the sliding groove II (1-8); one end of each of the two springs III (2-2) is fixedly connected to the U-shaped plate (2-1), and the other end of each of the springs III (2-2) is fixedly connected to the corresponding sliding chute I (1-2) and the corresponding sliding chute II (1-8); the top end of the U-shaped plate (2-1) is provided with a rectangular hole (2-3); the rollers (2-4) are connected to the U-shaped plate (2-1) through bearings; the sliding plate (2-5) is in sliding fit with the U-shaped plate (2-1), and the side surface of the sliding plate (2-5) adjacent to the roller (2-4) is provided with a plurality of arc-shaped grooves (2-6); the rollers (2-4) are in sliding fit with the arc-shaped grooves (2-6); the connecting blocks (1-7-2) and the movable blocks (1-5) are in contact with the sliding plates (2-5), and one ends of the connecting blocks (1-7-2) and the movable blocks (1-5) close to the sliding plates (2-5) are inclined downwards when the box body (1-1) is in a passenger transportation state.
5. The safety arrangement of claim 4, wherein: the rollers (2-4) are made of rubber, and the surfaces of the rollers (2-4) are rough.
6. The safety arrangement of claim 5, wherein: the movable device (3) comprises an arc-shaped shell (3-1), an outer frame (3-2), a ventilation plate (3-3), a limiting rod (3-4), umbrella cloth (3-5) and a circular ring (3-6); the outer end of the outer frame (3-2) is fixedly connected with an arc-shaped shell (3-1), the inner side of the outer frame (3-2) is fixedly connected with a ventilation plate (3-3), and the outer frame (3-2) is also provided with a limiting hole; the lower end of the limiting rod (3-4) is fixedly connected to the box body (1-1), and the upper end of the limiting rod (3-4) is in sliding fit with the limiting hole; the middle of the umbrella cloth (3-5) is provided with a circular ring (3-6), and the umbrella cloth (3-5) is fixedly connected with the inner side of the vent plate (3-3); a plurality of vent holes are formed in the vent plate (3-3); the hoisting ropes (1-9) are positioned in the circular rings (3-6); the connecting rod (1-7-1) is fixedly connected to the lower end of the outer frame (3-2).
7. The safety arrangement of claim 6, wherein: under the state that the box body (1-1) normally transports passengers, the air flow generated by the movement of the box body (1-1) is equal to the air discharge amount on the vent holes on the vent plates (3-3).
8. The safety arrangement of claim 6, wherein: the umbrella cloth (3-5) is made of polyethylene fibers.
9. The method of claim 8, wherein the method comprises the steps of: the protection method comprises the following steps:
1) the guardrails (1-25) are opened, the passengers wear the safety vests (1-15) and the safety trousers (1-18), the screw rods I (1-14) and the screw rods II (1-18) are rotated according to the heights of the passengers, and the heights of the safety vests (1-15) and the safety trousers (1-18) are adjusted;
2) when the box body (1-1) is overweight due to too many passengers, the bottom plate (1-20) moves downwards to drive the conductive blocks II (1-23) to be in contact with the conductive blocks I (1-22), the circuit is communicated, and the warning lamps (1-19) shine to remind overweight; the guardrail (1-25) is closed after the load is normal; then the box body (1-1) is moved through the hauling rope (1-9);
3) when the hauling rope (1-9) slips or breaks, the box body (1-1) descends rapidly, the air flow rate at the two sides of the box body (1-1) is increased relatively to the air flow rate in a normal motion state, so the air flow rate is increased, the air exhaust amount of the air exhaust holes in the vent plate (3-3) in unit time is not changed, so the residual air flows to the two sides of the vent plate (3-3), and the umbrella cloth (3-5) is supported;
4) after the umbrella cloth (3-5) is supported, the air resistance drives the ventilation board (3-3) to move upwards relative to the box body (1-1); the ventilation plate (3-3) drives the outer frame (3-2) and the arc-shaped shell (3-1) to move upwards, the outer frame (3-2) drives the connecting rod (1-7-1) to move upwards, the connecting rod (1-7-1) drives the movable connecting block (1-7-4) and further drives the connecting block (1-7-2) to move upwards, the connecting block (1-7-2) drives the connecting rod (1-6) to move and further drives the movable block (1-5) to move, when the movable block (1-5) moves towards the horizontal state, the movable block (1-5) and the connecting block (1-7-2) push the sliding plate (2-5) towards the direction far away from the box body (1-1), and the sliding plate (2-5) pushes the U-shaped plate (2-1) to move, the rollers (2-4) on the U-shaped plate (2-1) are abutted against the inner wall of the well, so that the friction between the rollers (2-4) and the well provides resistance for the box body (1-1) and the falling speed is reduced;
5) when the movable block (1-5) moves to a horizontal state, the upper end face of the movable block (1-5) is in contact with the limiting block (1-27), the umbrella cloth (3-5) continues to drive the outer frame (3-2) to move upwards, the connecting rod (1-7-1) drives the movable connecting block (1-7-4) to further drive the connecting block (1-7-2) to move upwards, then the connecting block (1-7-2) drives the top plate (1-12) to move upwards, and the top plate (1-12) drives the protection device to move upwards, so that the feet of passengers are separated from the bottom plate (1-20);
6) when the passengers separate the feet from the bottom plates (1-20), the distance between the umbrella cloth (3-5) and the box body (1-1) is the largest, and the umbrella cloth (3-5) provides resistance for the box body (1-1) and slows down the falling speed of the box body (1-1).
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| CN202011293385.7A CN112320547B (en) | 2020-11-18 | 2020-11-18 | Safety protection device and protection method for mine hoist |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4444293A (en) * | 1981-08-03 | 1984-04-24 | Card Corporation | Safety arrester for mine-shaft conveyances using tubing guides |
| CN206901522U (en) * | 2017-06-29 | 2018-01-19 | 徐州德坤电气科技有限公司 | Elevator lifting security protection system |
| CN207158541U (en) * | 2017-08-30 | 2018-03-30 | 陈正阳 | A kind of protection device fallen for elevator emergency |
| CN107879218B (en) * | 2017-12-18 | 2023-08-18 | 康达电梯有限公司 | Elevator fall protection device |
| CN207890849U (en) * | 2018-01-23 | 2018-09-21 | 北京慕尼黑电梯有限公司 | A kind of elevator fall protection equipment |
| CN208292458U (en) * | 2018-06-04 | 2018-12-28 | 彭彩圆 | A kind of buffer unit of used during elevator falling |
| CN208916536U (en) * | 2018-10-09 | 2019-05-31 | 北京通力亿鑫电梯有限公司 | A kind of elevator overload protection detection device |
| CN109264533B (en) * | 2018-11-21 | 2021-02-02 | 绍兴文理学院 | A vertical elevator that falls for high building falls |
| CN211545592U (en) * | 2019-12-30 | 2020-09-22 | 新疆大明矿业集团股份有限公司 | Safety system of mine hoister |
| CN111204633A (en) * | 2020-03-31 | 2020-05-29 | 河南省龙基建设工程有限公司 | Elevator shaft car buffer device |
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