CN110577127B - Mine transportation equipment with safety retarder and safety operation method thereof - Google Patents
Mine transportation equipment with safety retarder and safety operation method thereof Download PDFInfo
- Publication number
- CN110577127B CN110577127B CN201810583186.6A CN201810583186A CN110577127B CN 110577127 B CN110577127 B CN 110577127B CN 201810583186 A CN201810583186 A CN 201810583186A CN 110577127 B CN110577127 B CN 110577127B
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- Prior art keywords
- guide rail
- retarder
- permanent magnet
- cage
- safety
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000000979 retarding effect Effects 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 238000013459 approach Methods 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 22
- 238000005253 cladding Methods 0.000 claims description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 230000001012 protector Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a mine transportation device with a safety retarder and a safety operation method thereof, wherein the mine transportation device comprises: cage, retarding guide rail, permanent magnet retarder and trigger device; the retarding guide rail comprises a guide rail body and a metal shroud plate fixedly connected with the side surface of the guide rail body; the permanent-magnet retarder is fixedly connected with the cage; the permanent magnet brake unit is arranged on the side face of the retarding guide rail, and the distance between the permanent magnet brake unit and the retarding guide rail is a non-braking distance in a non-triggering state; the triggering device is connected with the lifting steel wire rope, and when the lifting steel wire rope breaks, the triggering device drives the permanent magnet braking unit of the permanent magnet retarder to approach the retarding guide rail, so that the interval distance between the permanent magnet braking unit and the retarding guide rail meets the braking gap. The transportation equipment is simple in principle, reliable in action and high in reliability, personnel safety in the cage can be guaranteed under the cage falling condition, and the cage body cannot be damaged after the cage falls due to the working characteristics of the transportation equipment, so that the production stopping loss of enterprises is reduced.
Description
Technical Field
The invention belongs to the technical field of mine transportation equipment and mine safe transportation, and particularly relates to mine transportation equipment provided with a safe retarder and a safe operation method of the mine transportation equipment.
Background
The modern engineering construction, construction and mining are all separated from the hoisting machinery. Mine lifts take on the task of lifting ore, lowering material, lifting personnel and equipment along a well bore, and play an important role in mining production activities. The mine lifting function determines that the elevator has the characteristics of safety, reliability, high efficiency, economy and the like. The mine production requires that the lifting equipment can run continuously, safely and reliably for a long time, and the accident rate and the overhaul time are reduced to the greatest extent; meanwhile, the hoister belongs to large-scale mining equipment, and has the advantages of high power, high power consumption, and influence on the technical and economic indexes of mine production due to manufacturing cost and running cost. Particularly important is the safety and reliability of the hoisting machine, which not only affects the mine production, but also involves the life and property safety of personnel, so the national requirements for the safety and reliability of the mine hoisting machine are very strict.
For this reason, the existing cage is provided with a safety device, namely a rope breaking safety device, and in order to ensure the safety of lifting personnel, the single rope lifting cage of lifting personnel or lifting personnel and materials is required to be provided with a reliable safety device. When falling accidents such as rope breakage and the like occur, the falling protector can immediately clamp the lifting container on the cage guide without falling. The newly installed or overhauled falling protector must be subjected to unhooking test, and the qualified falling protector can be used. The falling protector in use performs unhooking inspection test once every half year and unhooking test once every year.
When the rope breakage accident occurs to the vertical shaft hoisting steel wire rope, the cage is safely braked on a cage guide or a brake steel wire rope in the shaft by the anti-falling device, and the cage does not fall to the bottom of the shaft to cause a larger serious accident. The existing cage should be in the protection measure under the broken rope state, mainly rely on the buffer gear of the safety hook and tank bottom, because the environment of the colliery is more complicated, add the safety hook or brake rope to maintain in place, the safety hook extremely easily fails, at this moment, the cage free falling body directly strikes the tank bottom buffer platform, personnel are basically not living and still possible, the tank body will be destroyed under huge energy at the same time.
Disclosure of Invention
The first object of the invention is to provide a mine transportation device with a safety retarder, and the second object of the invention is to provide a mine transportation device safe operation method, so as to avoid the safety accident of cage falling when the cage falling protector fails.
To achieve the first object, the present invention provides a mine transportation apparatus provided with a safety retarder, comprising: cage, retarding guide rail, permanent magnet retarder and trigger device; triggering the anti-falling device of the cage by using a main pull rod connected with the lifting steel wire rope; the retarding guide rail comprises a guide rail body and a metal shroud plate fixedly connected with the side surface of the guide rail body, and the metal shroud plate is made of non-magnetic metal materials; the retarding guide rail is used for being vertically installed in a mine shaft; the permanent magnet retarder is fixedly connected with the cage; the permanent magnet brake unit is arranged on the side face of the retarding guide rail, and the distance between the permanent magnet brake unit and the retarding guide rail is a non-braking distance in a non-triggering state; the triggering device is connected with the lifting steel wire rope, and when the lifting steel wire rope breaks, the triggering device drives the permanent magnet braking unit of the permanent magnet retarder to approach the retarding guide rail, so that the interval distance between the permanent magnet braking unit and the retarding guide rail meets the braking gap.
The mine transportation equipment provided with the safety retarder is characterized in that the non-magnetic metal material used for manufacturing the metal cladding plate is copper, aluminum, copper alloy or aluminum alloy.
The mine transportation equipment provided with the safety retarding device provided by the invention further comprises the retarding guide rail sequentially comprising the first guide rail section and the second guide rail section from top to bottom; the guide rail bodies of the first guide rail section and the second guide rail section are steel rails; the metal cladding plate of the first guide rail section is an aluminum plate, and the metal cladding plate of the second guide rail section is a copper plate.
The mine transportation equipment provided with the safety retarding device provided by the invention further comprises a first guide rail section, a second guide rail section and a third guide rail section from top to bottom in sequence; the guide rail bodies of the first guide rail section and the second guide rail section are steel rails; the metal cladding plate of the first guide rail section is an aluminum plate, the metal cladding plate of the second guide rail section is a copper plate, and the guide rail body and the metal cladding plate of the third guide rail section are both made of aluminum or copper.
The mine transportation equipment provided with the safety retarder device provided by the invention further comprises: the device comprises a retarder front shell, a retarder back plate, a permanent magnet braking unit and a driving gear; the retarder front shell is provided with a front shell reversing groove and is arranged on the retarder backboard; the retarder backboard is provided with a backboard reversing groove, and the position of the backboard reversing groove corresponds to that of the front shell reversing groove; the permanent magnet braking units are arranged on two sides of the retarding guide rail; the driving gear is arranged on the side surface of the retarder backboard; the reversing shaft connected with the permanent magnet braking unit is connected with the periphery of the driving gear.
The mine transportation equipment provided with the safety retarder comprises a mine transportation device, wherein the mine transportation device comprises a mine transportation device body, a mine transportation device body and a mine transportation device body, wherein the mine transportation device body is provided with a mine transportation device, and the mine transportation device body is provided with a mine transportation device body; the bottom plate is provided with a reversing shaft mounting lug plate; the reversing shaft is inserted into the front shell reversing groove and the back plate reversing groove.
The mine transportation equipment provided with the safety retarder comprises the mine transportation equipment provided with the safety retarder, and the triggering device comprises the triggering rod, wherein the triggering rod is provided with the driving teeth at the position connected with the driving gear.
The mine transportation equipment provided with the safety retarder comprises a mine transportation device, a trigger device and a control device, wherein the mine transportation device is characterized in that the trigger device comprises a shaft seat, a linkage shaft, a driving deflector rod, a transmission deflector rod and a driving spring; the top of the cage frame is fixed with a shaft seat, and the linkage shaft is arranged in the shaft seat; the driving deflector rod is fixedly connected with the linkage shaft; the main pull rod is connected with the end part of the driving deflector rod; the transmission deflector rod is fixedly connected with the linkage shaft, and the end part of the transmission deflector rod is connected with the trigger rod; the driving spring is connected between the cage frame and the end part of the transmission deflector rod.
The mine transportation equipment provided with the safety retarder is characterized in that the permanent magnet retarder is fixedly connected to the side face of the cage frame.
In order to achieve the second object, the invention provides a safe operation method of mine transportation equipment, wherein the mine transportation equipment comprises a cage, a retarding guide rail, a permanent magnet retarder and a triggering device; a lifting steel wire rope connected with the cage realizes the up-and-down movement of the cage in a mine shaft; when the lifting steel wire breaks, the triggering device drives the permanent magnet braking unit inside the permanent magnet retarder to approach the retarding guide rail, and braking force is generated between the permanent magnet braking unit and the retarding guide rail through electromagnetic induction to prevent the cage from falling freely.
The transportation equipment is simple in principle and reliable in action, so that the transportation equipment is high in reliability, personnel safety in the cage can be guaranteed under the cage falling condition, the cage body cannot be damaged after the cage falls due to the working characteristics of the transportation equipment, a new steel wire rope is connected, potential safety hazards are eliminated, the transportation equipment can be rapidly put into production, and production stopping loss of enterprises is reduced. The device is added with a new safety device on the basis of all safety devices of the original transportation equipment, the national importance is now attached to the safety production of coal mines more and more, and on the premise of first life safety, one more safety measure is added, so that one more safety measure is ensured.
Drawings
The foregoing and/or other advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the invention, wherein:
FIG. 1 is a schematic diagram of a cage of a mine transportation apparatus of one embodiment of the present invention;
FIG. 2 is a schematic view of a retarding guide of a mine transportation apparatus according to one embodiment of the present invention;
FIG. 3 is a schematic top view of a retarding guide of a mine transportation apparatus according to one embodiment of the present invention;
fig. 4 is a schematic diagram of a layout of a retarding guide rail in a hoistway of a mine according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a permanent magnet retarder of a mine transportation apparatus according to one embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the mounting and connection of a driving gear to a trigger lever according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a permanent magnet brake unit of a permanent magnet retarder according to an embodiment of the invention;
Fig. 8 is a schematic diagram of a triggering device according to an embodiment of the invention.
FIG. 9 is a schematic side view of a trigger device according to one embodiment of the present invention;
Fig. 10 is a braking force curve for copper sheathing and aluminum sheathing.
In the drawings, the list of components represented by the various numbers is as follows:
10. cage, 11, crossbeam, 12, stand, 13, steel plate, 14, main pull rod, 15, fall arrester, 16, hoisting wire rope, 17, rope ring, 20, retarded guide rail, 21, guide rail body, 22, metal cladding plate, 30, permanent magnet retarder, 31, retarder front housing, 32, retarder back plate, 33, permanent magnet braking unit, 34, driving gear, 35, mounting back housing, 36, back plate reversing groove, 37, reversing shaft, 40, triggering device, 41, triggering lever, 42, driving tooth, 43, shaft seat, 44, linkage shaft, 45, driving deflector, 46, transmission deflector rod, 47, driving spring, 50, mine shaft, 331, magnetic steel sheath, 332, magnetic steel, 333, bottom plate, 334, reversing shaft mounting ear plate.
Detailed Description
Hereinafter, embodiments of a mine transportation apparatus provided with a safety retarder and a safety operation method thereof of the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present application, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the application to the embodiments and scope of the application. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The drawings in the present specification are schematic views, which assist in explaining the concept of the present invention, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
A mine transportation apparatus provided with a safety retarder according to an embodiment of the present invention will be described with reference to fig. 1 to 9, the mine transportation apparatus including: cage 10, retarding guide 20, permanent magnet retarder 30 and trigger device 40;
As shown in fig. 1, the cage 10 comprises a cage frame formed by fixedly connecting a cross beam 11 and an upright post 12, wherein a fall arrester 15 is arranged on the cross beam 11 positioned at the top of the cage frame, and the fall arrester 15 is triggered by a main pull rod 14 connected with a lifting steel wire rope 16; in one embodiment, the fall arrester is composed of a catcher and a driving mechanism. When the cage operates normally, the lifting steel wire rope lifts the main pull rod upwards through the connecting device at the top of the cage, so that the spring is compressed. When the lifting steel wire rope or the connecting device breaks, the spring stretches, the main pull rod drives the balance plate to move downwards, the lever rotates around the supporting shaft, the catcher is driven to act, and the catcher mainly comprises a brake shoe and an eccentric lever. The brake shoe is sleeved on an eccentric cam at the front end of the eccentric lever, and the working surface of the brake shoe is provided with a semicircular groove which is matched with the diameter of the brake steel rope. When the cage is in normal operation, the brake steel rope can pass through freely. When the lifting steel wire rope or the connecting device is broken, the eccentric lever rotates to enable the two brake shoes to approach each other until the brake steel wire rope is clamped.
In the embodiment shown in fig. 1, the hoisting wire 16 is connected to the main pull rod 14 by a rope loop 17, for example by double gripping a wedge-shaped rope loop. The fall arrester 15 is also called a rope break protector, and is used for guaranteeing the safety of lifting personnel. The safety code of coal mines specifies that the lifting personnel or the single rope lifting cage 10 of lifting personnel and material must be equipped with a reliable fall arrester 15. When a falling accident such as rope breakage occurs, the falling protector 15 can immediately clamp the lifting container on the cage guide without falling. The newly installed or overhauled fall arrester 15 must be subjected to unhooking test, and the qualified fall arrester can be used. The falling protector 15 in use is subjected to a unhooking test once a half year and a unhooking test once a year.
As shown in fig. 2 and 3, the retarding guide rail 20 comprises a guide rail body 21 and a metal shroud plate 22 fixedly connected with the side surface of the guide rail body 21, wherein the metal shroud plate 22 is made of a non-magnetic metal material; the retarding guide rail 20 is for vertical installation into the mine shaft 50; because the safe deceleration of the cage is realized by utilizing a single retarder and a corresponding retarder guide rail, the cage cannot be installed due to overlarge volume, and the problems are solved by utilizing a plurality of independent retarders and matching with a plurality of retarder guide rails. In fig. 4, a layout mode of guide rails is shown, a mine shaft is in a rectangular structure, two parallel retarding guide rails are respectively arranged on two longer shaft side walls, and the parallel retarding guide rails are symmetrically arranged relative to the corresponding guide rails on the shaft side walls, so that braking force balance of the retarder for a cage is ensured.
In a preferred embodiment, the non-magnetically permeable metallic material used to make the metal sheathing 22 is copper, aluminum, a copper alloy, or an aluminum alloy.
In a preferred embodiment, the retarding rail 20 comprises a first rail section and a second rail section in sequence from top to bottom; the guide rail bodies 21 of the first guide rail section and the second guide rail section are steel rails; the metal sheathing 22 of the first rail section is an aluminum sheet and the metal sheathing 22 of the second rail section is a copper sheet.
The braking effect is directly affected by the selection of the metal cladding plate material, the selection of the thickness and the like, the common metal cladding plate material is copper plate, aluminum plate, steel plate and the like, the braking force effects of different materials, different thicknesses and different combinations are quite different, and as the cage is relatively large in mass, the combination with the strongest braking force is selected, and the safety deceleration requirement of the cage is met by adopting a track arrangement mode of combining the first guide rail section and the second guide rail section; the braking effect of the high-speed first guide rail is best, and the braking effect of the first guide rail is rapidly reduced when a certain speed is reached along with the gradual reduction of the speed, and the second guide rail is adopted at the moment to ensure that the braking force of the first guide rail cannot fade too quickly. The braking effect of both combinations is shown in fig. 10.
As can be seen from FIG. 10, with the retarder guide rail of the above structure, when the cage speed is above 4m/s, the braking force of aluminum is better than that of copper, and under the action of the retarder, as the speed is reduced, when the speed is reduced below 4m/s, the braking force of copper is obviously better than that of aluminum. It was calculated that 400m cage guide had a structure of aluminum metal cladding and steel guide rail from the ground level down 378m, and 22m had a structure of copper metal cladding and steel guide rail. The cage falls from the top of the cage guide, and finally falls at the speed of 2m/s due to the braking of the aluminum plate, when the braking force provided by the copper plate is higher than that provided by the aluminum plate when the braking plate is reduced to the copper plate area, the cage continuously falls, when the cage speed is finally reduced to 1.5m/s, the retarder and the cage are balanced by dead weight, the cage finally impacts the bottom retarding platform at the speed of 1.5m/s, and finally stops, and the deceleration at the moment is less than 1.5g due to the action of the bottom buffering platform of the cage guide, so that the impact force is small, and no harm is generated to human bodies and the cage body.
In a further preferred embodiment, the retarding rail 20 comprises a first rail section, a second rail section and a third rail section in that order from top to bottom; the guide rail bodies 21 of the first guide rail section and the second guide rail section are steel rails; the metal cladding plate 22 of the first guide rail section is an aluminum plate, the metal cladding plate 22 of the second guide rail section is a copper plate, and the guide rail body 21 and the metal cladding plate 22 of the third guide rail section are both made of aluminum or copper.
According to calculation, the 400m cage guide adopts a structure of adopting an aluminum metal cladding plate and a steel guide rail from a ground plane to the bottom 378m, the 15m cage guide adopts a structure of adopting a copper metal cladding plate and a steel guide rail, and the bottom 7m of the cage guide adopts a pure aluminum guide rail, namely the guide rail body 21 and the metal cladding plate 22 of the third guide rail section are both made of aluminum materials.
After the cage with the retarder stops falling at the bottom, the permanent magnet braking unit of the permanent magnet retarder is required to be separated firstly, and then the cage is lifted by using a standby hoisting wire rope for maintenance and is further rapidly put into production and use. A further effect of the arrangement according to the above is that the separate symmetrically arranged permanent magnet brake units only need to overcome the magnetic attraction between the two. Correspondingly, if the rail body of the retarding rail is a steel rail, the permanent magnet braking units which are arranged in a separated and symmetrical way also have to overcome the magnetic attraction between the magnetic steel and the steel rail, and the difficulty of separation is greatly increased due to the large magnetic attraction, and even related spare and accessory parts can be damaged in the separation process.
The permanent magnet retarder 30 is fixedly connected with the cage 10; the permanent magnet braking unit 33 included in the permanent magnet retarder 30 is disposed at a side of the retarding guide rail 20, and is spaced apart from the retarding guide rail 20 by a non-braking distance in a non-triggering state;
the mine transportation equipment provided with the safety retarder according to the present invention as shown in fig. 5 and 6, the retarder comprises: a retarder front housing 31, a retarder back plate 32, a permanent magnet brake unit 33 and a drive gear 34; the retarder front shell 31 is provided with a front shell reversing groove, and the retarder front shell 31 is arranged on the retarder back plate 32; the retarder backplate 32 is provided with a backplate reversing groove 36, and the position of the backplate reversing groove 36 corresponds to that of the front shell reversing groove; the permanent magnet braking units 33 are arranged on two sides of the retarding guide rail 20; the drive gear 34 is mounted on the side of the retarder backplate 32; the reversing shaft 37 connected to the permanent magnet brake unit 33 is connected to the periphery of the drive gear 34.
As shown in fig. 5, the retarder further comprises a mounting back shell 35, and the mounting back shell is fixedly connected with the retarder back plate through bolts; the mounting back shell is provided with holes at the top and the bottom for the trigger rod to pass through; the mounting back shell is bolted to the frame of the cage.
The mine transportation equipment provided with the safety retarder comprises a permanent magnet braking unit 33, a magnetic steel 332 and a magnetic steel 332 sheath 331, wherein the permanent magnet braking unit 33 comprises a bottom plate 333, a magnetic steel 332 and a magnetic steel 332 sheath 331 as shown in fig. 7; the base plate 333 has a reversing shaft mounting lug 334; the reversing shaft 37 is inserted into the front housing reversing groove and the back plate reversing groove 36.
The triggering device 40 is connected with the hoisting steel wire rope 16, and when the hoisting steel wire rope 16 breaks, the triggering device 40 drives the permanent magnet braking unit 33 of the permanent magnet retarder 30 to approach the retarding guide rail 20, so that the distance between the permanent magnet braking unit 33 and the retarding guide rail 20 meets the braking gap.
The safe operation method of the mine transportation equipment comprises the following steps: the mine transportation equipment comprises a cage 10, a retarding guide rail 20, a permanent magnet retarder 30 and a triggering device 40; a hoist rope 16 connected to the cage 10 effects up and down movement of the cage 10 within the mine shaft 50; when the lifting steel wire breaks, the triggering device 40 drives the permanent magnet braking unit 33 inside the permanent magnet retarder 30 to approach the retarding guide rail 20, and braking force is generated between the permanent magnet braking unit 33 and the retarding guide rail 20 through electromagnetic induction to prevent the cage 10 from falling freely.
In a preferred embodiment of the mine transportation apparatus provided with a safety retarder, the triggering device 40 comprises a triggering lever 41, which triggering lever 41 has driving teeth 42 in a position of connection with the driving gear 34. The triggering force generated by the triggering device can be transmitted to the driving gear in real time by using the triggering rod and the driving teeth, so that the action of the permanent magnet braking unit is realized. In a preferred embodiment of the mine transportation apparatus provided with a safety retarder, as shown in fig. 8 and 9, the triggering device further comprises a shaft seat, a linkage shaft, a driving deflector rod and a driving spring; the top of the cage frame is fixed with a shaft seat 43, and a linkage shaft 44 is arranged in the shaft seat 43; the driving deflector rod 45 is fixedly connected with the linkage shaft 44; the main pull rod 14 is connected with the end part of the driving deflector rod 45; the transmission deflector rod 46 is fixedly connected with the linkage shaft 44, and the end part of the transmission deflector rod 46 is connected with the trigger rod 41; a drive spring 47 is connected between the cage frame and the end of the drive lever 46. The driving force of the driving lever is transmitted to the plurality of transmission levers by the coupling shaft, and is further simultaneously transmitted to the trigger lever 41.
In fig. 4, a layout mode of guide rails is shown, a mine shaft is in a rectangular structure, two parallel retarding guide rails are respectively arranged on two longer shaft side walls, and the parallel retarding guide rails are symmetrically arranged relative to the corresponding guide rails on the shaft side walls, so that braking force balance of the retarder for a cage is ensured. Correspondingly, the permanent magnet retarders 30 are fixedly connected to the side surfaces of the cage frame in a position opposite to that of the cage frame, and each side surface is fixedly provided with two permanent magnet retarders which are spaced from each other or two rows of permanent magnet retarders which are vertically arranged.
The above disclosed features are not limited to the disclosed combinations with other features, and other combinations between features can be made by those skilled in the art according to the purpose of the invention to achieve the purpose of the invention.
Claims (9)
1. A mine transportation apparatus provided with a safety retarder, comprising: cage, retarding guide rail, permanent magnet retarder and trigger device; triggering the anti-falling device of the cage by using a main pull rod connected with the lifting steel wire rope; the retarding guide rail comprises a guide rail body and a metal shroud plate fixedly connected with the side surface of the guide rail body, and the metal shroud plate is made of non-magnetic metal materials; the retarding guide rail is used for being vertically installed in a mine shaft; the permanent magnet retarder is fixedly connected with the cage; the permanent magnet brake unit is arranged on the side face of the retarding guide rail, and the distance between the permanent magnet brake unit and the retarding guide rail is a non-braking distance in a non-triggering state; the triggering device is connected with the lifting steel wire rope, and when the lifting steel wire rope is broken, the triggering device drives the permanent magnet braking unit of the permanent magnet retarder to approach the retarding guide rail, so that the interval distance between the permanent magnet braking unit and the retarding guide rail meets the braking gap; the retarder includes: the device comprises a retarder front shell, a retarder back plate, a permanent magnet braking unit and a driving gear; the retarder front shell is provided with a front shell reversing groove and is arranged on the retarder backboard; the retarder backboard is provided with a backboard reversing groove, and the position of the backboard reversing groove corresponds to that of the front shell reversing groove; the permanent magnet braking units are arranged on two sides of the retarding guide rail; the driving gear is arranged on the side surface of the retarder backboard; the reversing shaft connected with the permanent magnet braking unit is connected with the periphery of the driving gear;
the reversing shaft is inserted into the front shell reversing groove and the back plate reversing groove.
2. The mine transportation apparatus with a safety retarder of claim 1, wherein the non-magnetically permeable metallic material used to make the metal sheathing is copper, aluminum, copper alloy or aluminum alloy.
3. The mine transportation apparatus with a safety retarder of claim 1, wherein the retarder rail comprises a first rail section and a second rail section in sequence from top to bottom; the guide rail bodies of the first guide rail section and the second guide rail section are steel rails; the metal cladding plate of the first guide rail section is an aluminum plate, and the metal cladding plate of the second guide rail section is a copper plate.
4. The mine transportation apparatus with a safety retarder of claim 1, wherein the retarder rail comprises a first rail section, a second rail section and a third rail section in that order from top to bottom; the guide rail bodies of the first guide rail section and the second guide rail section are steel rails; the metal cladding plate of the first guide rail section is an aluminum plate, the metal cladding plate of the second guide rail section is a copper plate, and the guide rail body and the metal cladding plate of the third guide rail section are both made of aluminum or copper.
5. The mine transportation apparatus with the safety retarder according to claim 1, wherein the permanent magnet brake unit comprises a bottom plate, a magnetic steel and a magnetic steel sheath; the bottom plate is provided with a reversing shaft mounting lug plate.
6. The mine transportation apparatus with a safety retarder of claim 1, wherein the trigger device comprises a trigger lever having a drive tooth at a location of connection with the drive gear.
7. The mine transportation apparatus with the safety retarder of claim 6, wherein the trigger device further comprises an axle seat, a linkage axle, a drive lever, a transmission lever, and a drive spring; the top of the cage frame is fixed with a shaft seat, and the linkage shaft is arranged in the shaft seat; the driving deflector rod is fixedly connected with the linkage shaft; the main pull rod is connected with the end part of the driving deflector rod; the transmission deflector rod is fixedly connected with the linkage shaft, and the end part of the transmission deflector rod is connected with the trigger rod; the driving spring is connected between the cage frame and the end part of the transmission deflector rod.
8. The mine transportation apparatus with safety retarder according to any of claims 1-7, wherein the permanent magnet retarders are fixedly connected to the sides of the cage frame in opposite positions.
9. A method for safely operating a mine transportation apparatus, characterized in that the method is carried out with a mine transportation apparatus provided with a safety retarder according to any of claims 1-8, the method being:
a lifting steel wire rope connected with the cage realizes the up-and-down movement of the cage in a mine shaft; when the lifting steel wire rope breaks, the triggering device drives the permanent magnet braking unit inside the permanent magnet retarder to approach the retarding guide rail, and braking force is generated between the permanent magnet braking unit and the retarding guide rail through electromagnetic induction to prevent the cage from falling freely.
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| CN201810583186.6A CN110577127B (en) | 2018-06-08 | 2018-06-08 | Mine transportation equipment with safety retarder and safety operation method thereof |
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| CN113911875B (en) * | 2021-08-27 | 2023-08-25 | 中国矿业大学 | Overwinding protection device and method for deep well large-tonnage lifting system |
| CN113879933A (en) * | 2021-09-18 | 2022-01-04 | 协兴建筑有限公司 | Braking device and material lifting system |
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