CN110821989B - Anti-falling device of elevator - Google Patents
Anti-falling device of elevator Download PDFInfo
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- CN110821989B CN110821989B CN201911093072.4A CN201911093072A CN110821989B CN 110821989 B CN110821989 B CN 110821989B CN 201911093072 A CN201911093072 A CN 201911093072A CN 110821989 B CN110821989 B CN 110821989B
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- centrifugal
- side plate
- horizontal
- bevel gear
- elevator
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
- F16D63/008—Brakes acting on a linearly moving member
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
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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
- B66B5/26—Positively-acting devices, e.g. latches, knives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a falling prevention device for a lifting machine, belonging to the technical field of falling prevention of the lifting machine and comprising a roller mechanism, a bevel gear set, a support, a centrifugal movement mechanism, a protruding and retaining mechanism and a limit switch, wherein the support comprises a first side plate and a second side plate, the first side plate and the second side plate are mutually perpendicular and connected, and the roller mechanism comprises a roller and a wheel shaft. The anti-falling function is realized completely through mechanical transmission, even if the elevator is only slightly stalled, the anti-falling elevator can respond in time, and the reliability is high; the elevator has the characteristics of convenience in installation and use, and the operation requirement can be met only by welding a plurality of stop blocks on the elevator upright post; the adaptability is high, the allowable upper limit of the working speed can be changed by changing the transmission ratio selection of the bevel gear, and the elevator can be conveniently adapted to elevators with different working speeds; when the prevention carries thing tray and falls, can prevent the secondary destruction for the motor outage through triggering limit switch.
Description
Technical Field
The invention relates to the technical field of falling prevention of a lifting machine, in particular to a falling prevention device of the lifting machine.
Background
The anti-falling device of the elevator is a device for preventing the object carrying tray from stalling and falling when the lifting system of the elevator fails. The prior widely used anti-falling device is a gear cone drum-shaped progressive anti-falling safety device or an elevator safety gear.
The gear cone drum-shaped progressive anti-falling safety device must be matched with a rack for use, the rack is required to be arranged on an upright post of the elevator, the elevator is mostly lifted by a steel wire rope or a chain, and the cost is higher only by arranging an additional rack for the anti-falling function.
The elevator safety tongs need to be matched with an additional speed limiter and a speed limiting rope system for use, the structure is complex, and the structural design of a hoisting machine is restricted; for a heavy-load type elevator, the anti-falling effect is limited due to the difficulty in providing enough clamping force; in addition, when the object carrying tray stalls and falls, the elevator safety tongs do not have the motor power-off function, and secondary damage is easily caused by continuous rotation of the motor, so that the anti-falling device for the elevator is provided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the elevator falling-preventing device is provided for preventing the elevator from falling accidentally by means of reliable safety protection of the elevator by means of mechanical transmission.
The invention solves the technical problems by the following technical scheme that the centrifugal movement mechanism comprises a roller mechanism, a bevel gear set, a support, a centrifugal movement mechanism, a protruding blocking support mechanism and a limit switch, wherein the support comprises a first side plate and a second side plate, the first side plate and the second side plate are mutually perpendicular and connected, the roller mechanism comprises a roller and a wheel shaft, the roller is arranged at one end of the wheel shaft, the roller is tightly attached to an upright post of a lifting machine, when a carrying tray moves up and down, the upright post drives the roller to rotate, the other end of the wheel shaft penetrates through the first side plate and is rotationally connected with the first side plate, the centrifugal movement mechanism is arranged on the second side plate and is rotationally connected with the second side plate, the bevel gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is meshed with the second bevel gear, and, the first bevel gear is connected with one end, penetrating through the first side plate, of the wheel shaft, the second bevel gear is connected with the centrifugal movement mechanism, the extending blocking mechanism and the limit switch are arranged on the second side plate, the position of the extending blocking mechanism is adjusted through the centrifugal movement mechanism, the position of a loading tray of the elevator can be limited, and the extending blocking mechanism can trigger the limit switch to control the on-off of a motor power supply loop of the elevator.
Furthermore, the second side plate is arranged in parallel to the horizontal plane, and the first side plate is arranged perpendicular to the horizontal plane.
Furthermore, the centrifugal movement mechanism comprises a centrifugal rotating shaft, a centrifugal rotating drum and a centrifugal sliding block, the centrifugal rotating shaft penetrates through the second side plate and is rotatably connected with the second side plate, the centrifugal rotating drum is sleeved on the upper portion of the centrifugal rotating shaft, and the centrifugal sliding block is arranged on the centrifugal rotating drum and is movably connected with the centrifugal rotating drum.
Further, the centrifugal rotor includes cylinder support and crooked guide arm, crooked guide arm includes nearly heart end and telecentric leg, nearly heart end with the centrifugal rotor is connected, and telecentric leg is higher than nearly heart end, smooth transition between nearly heart end and the telecentric leg, and crooked guide arm is integrated into one piece, centrifugal slider cover is established on the crooked guide arm.
Furthermore, centrifugal slider includes two parallel arrangement's cylindrical roller and connecting plate, two cylindrical roller connects two respectively the upper and lower part of connecting plate makes centrifugal slider's inside forms the through-hole, crooked guide arm is located inside the through-hole, cylindrical roller with crooked guide arm surface contact, the terminal surface of crooked guide arm telecentric terminals is equipped with keeps off the platform, through it can restrict to keep off the platform centrifugal slider's maximum stroke.
Furthermore, the extending and retaining mechanism comprises a rotating push rod, a horizontal push rod, a vertical moving rod, a slide block guide rail assembly, a retaining pin and a retaining pin spring, wherein one end of the rotating push rod is provided with a round hole, sleeved on the second side plate and rotationally connected with the second side plate; the horizontal push rod passes through slider guide rail set spare with second curb plate sliding connection, the vertical migration pole runs through second curb plate setting and rather than swing joint, the backing pin level sets up first curb plate upper end, slider guide rail set spare can drive the vertical migration pole moves down and makes the backing pin stretches out to lifting machine stand one side.
Further, slider guide rail subassembly includes horizontal slider and guide rail, horizontal slider with guide rail sliding connection, it can horizontal slip on the guide rail, the guide rail sets up on the second curb plate, with second curb plate is integrated into one piece, horizontal push rod sets up horizontal slider upper end to the top extends to one side, drive during the horizontal slip horizontal push rod will vertical migration pole downwardly moving.
Furthermore, the vertical moving rod comprises an end roller, a limiting block and a vertical guide column, the vertical guide column penetrates through the second side plate, the end roller is arranged at the top end of the vertical guide column and is extruded by the horizontal push rod, the limiting block is arranged outside the vertical guide column and is located inside the stop pin, and when the elevator stalls, the limiting block is driven by the vertical guide column to move downwards and is separated from the stop pin.
Further, the backing pin includes the round pin body and horizontal guide post, the round pin body be equipped with stopper shape assorted leads to the groove, the backing pin with horizontal guide post coplanar, horizontal guide post runs through the second curb plate and rather than swing joint, be provided with the confession on the second curb plate the ear seat that horizontal guide post runs through, the backing pin spring housing is established horizontal guide post is outside, when the lifting machine normally works the backing pin spring is in tensile state.
Furthermore, the extending and retaining mechanism further comprises a jacking spring, and the jacking spring is arranged on the lower portion of the vertical moving rod. The jacking spring is used for upwards supporting the limiting block, so that the limiting block is prevented from falling under the action of dead weight, and the normal operation of the loading tray is ensured. The anti-falling device further comprises a shell, and the shell is arranged outside the support.
Compared with the prior art, the invention has the following advantages: the anti-falling device of the elevator completely realizes the anti-falling function through mechanical transmission, can respond in time even if the elevator is slightly stalled, and has high reliability; the elevator has the characteristics of convenience in installation and use, and the operation requirement can be met only by welding a plurality of stop blocks on the elevator upright post; the adaptability is high, the allowable upper limit of the working speed can be changed by changing the transmission ratio selection of the bevel gear, and the elevator can be conveniently adapted to elevators with different working speeds; when the prevention carries thing tray and falls, can prevent the secondary destruction for the motor outage through triggering limit switch.
Drawings
Fig. 1 is a schematic structural view of a fall protection device according to a second embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a roller mechanism according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a bracket according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a centrifugal movement mechanism according to a second embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an extending catch mechanism according to a second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a vertically moving rod according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a stop pin according to a second embodiment of the present invention.
In the figure: 1. a housing; 2. a roller mechanism; 21. a roller; 211. a rubber ferrule; 22. a wheel axle; 3. a bevel gear set; 4. a support; 41. a first side plate; 42. a second side plate; 421. fixing a column; 422. an ear mount; 5. a centrifugal motion mechanism; 51. a centrifugal rotating shaft; 52. a centrifugal drum; 53. a centrifugal slider; 6. a gear extending mechanism; 61. rotating the push rod; 62. a horizontal push rod; 63. a vertical moving rod; 631. an end roller; 632. a limiting block; 633. a vertical guide post; 64. a slider rail assembly; 641. a guide rail; 642. a horizontal slider; 65. a jacking spring; 66. a stop pin; 661. a horizontal guide post; 662. a pin body; 67. a stop pin spring; 7. and a limit switch.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example one
The embodiment provides a technical scheme: a falling prevention device for a hoister comprises a roller mechanism, a bevel gear set, a support, a centrifugal motion mechanism, a protruding blocking support mechanism and a limit switch, wherein the support comprises a first side plate and a second side plate, the first side plate and the second side plate are mutually perpendicular and connected, the roller mechanism comprises a roller and a wheel shaft, the roller is arranged at one end of the wheel shaft, the roller is tightly attached to a stand column of the hoister, the stand column drives the roller to rotate when a carrying tray moves up and down, the other end of the wheel shaft penetrates through the first side plate and is rotatably connected with the first side plate, the centrifugal motion mechanism is arranged on the second side plate and is rotatably connected with the second side plate, the bevel gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is meshed with the second bevel gear, the central axis of the first bevel gear is mutually perpendicular to the second bevel gear, and the first, the second bevel gear is connected with the centrifugal movement mechanism, the extending blocking and supporting mechanism and the limit switch are arranged on the second side plate, the position of the extending blocking and supporting mechanism is adjusted through the centrifugal movement mechanism, the position of a loading tray of the elevator can be limited, and the extending blocking and supporting mechanism can trigger the limit switch to control the on-off of a motor power supply loop of the elevator. The anti-falling device of the elevator completely realizes the anti-falling function through mechanical transmission, can respond in time even if the elevator is slightly stalled, and has high reliability; the elevator has the characteristics of convenience in installation and use, and the operation requirement can be met only by welding a plurality of stop blocks on the elevator upright post; the adaptability is high, the allowable upper limit of the working speed can be changed by changing the transmission ratio selection of the bevel gear, and the elevator can be conveniently adapted to elevators with different working speeds; when the prevention carries thing tray and falls, can prevent the secondary destruction for the motor outage through triggering limit switch.
The second side plate needs to be placed in parallel with a horizontal plane, and the first side plate needs to be placed perpendicular to the horizontal plane.
The centrifugal movement mechanism comprises a centrifugal rotating shaft, a centrifugal rotating drum and a centrifugal sliding block, the centrifugal rotating shaft penetrates through the second side plate and is rotatably connected with the second side plate, the centrifugal rotating drum is sleeved on the upper portion of the centrifugal rotating shaft, and the centrifugal sliding block is arranged on the centrifugal rotating drum and is movably connected with the centrifugal rotating drum. When the elevator stalls, the roller drives the first bevel gear to rotate, and then the first bevel gear drives the second bevel gear to rotate, so that the centrifugal rotating drum is driven to rotate.
Centrifugal rotary drum includes cylinder support and crooked guide arm, crooked guide arm includes nearly heart end and telecentric mirror, nearly heart end with centrifugal rotary drum connects, and telecentric mirror is higher than nearly heart end, smooth transition between nearly heart end and the telecentric mirror, and crooked guide arm is integrated into one piece spare, centrifugal slider cover is established on the crooked guide arm. When the centrifugal rotary drum rotates, the centrifugal guide rod is arranged on the centrifugal rotary drum, so that the centrifugal guide rod can rotate along with the centrifugal rotary drum under the driving of the centrifugal rotary drum.
The centrifugal slider comprises two cylindrical rollers and a connecting plate which are arranged in parallel, the cylindrical rollers are respectively connected with the upper portion and the lower portion of the connecting plate, a through hole is formed in the centrifugal slider, the bent guide rod is located inside the through hole, the cylindrical rollers are in surface contact with the bent guide rod, a blocking platform is arranged on the end face of the far end of the bent guide rod, and the blocking platform can limit the maximum stroke of the centrifugal slider. When the rotating speed of the centrifugal guide rod reaches a certain speed, the centrifugal slide block moves from the proximal end to the distal end of the bent guide rod under the action of centrifugal force.
The extending and retaining mechanism comprises a rotating push rod, a horizontal push rod, a vertical moving rod, a sliding block guide rail assembly, a retaining pin and a retaining pin spring, wherein one end of the rotating push rod is provided with a round hole, sleeved on the second side plate and rotationally connected with the second side plate; the horizontal push rod passes through slider guide rail set spare with second curb plate sliding connection, the vertical migration pole runs through second curb plate setting and rather than swing joint, the backing pin level sets up first curb plate upper end, slider guide rail set spare can drive the vertical migration pole moves down and makes the backing pin stretches out to lifting machine stand one side.
The slider guide rail subassembly includes horizontal slider and guide rail, horizontal slider with guide rail sliding connection, it can horizontal slip on the guide rail, the guide rail sets up on the second curb plate, with the second curb plate is integrated into one piece, horizontal push rod sets up horizontal slider upper end to extend to the top to one side, drive during horizontal slider horizontal slip horizontal push rod will vertical movement pole downwardly moving.
Furthermore, the vertical moving rod comprises an end roller, a limiting block and a vertical guide column, the vertical guide column penetrates through the second side plate, the end roller is arranged at the top end of the vertical guide column and is extruded by the inclined lower end face of the horizontal push rod, the limiting block is arranged outside the vertical guide column and located inside the stop pin, and when the elevator stalls, the limiting block is driven by the vertical guide column to move downwards and separate from the stop pin.
The horizontal sliding block and the horizontal push rod form a triangular structure, when the horizontal sliding block slides to one side of the stop pin horizontally, one bevel edge of the horizontal push rod rapidly extrudes the end roller, so that the vertical guide column is driven to rapidly move downwards, and the limiting block is separated from the pin body.
The stop pin includes the round pin body and horizontal guide post, the round pin body be equipped with stopper shape assorted leads to the groove, the stop pin with horizontal guide post coplanar, horizontal guide post runs through the second curb plate rather than swing joint, be provided with the confession on the second curb plate the ear seat that horizontal guide post runs through, the stop pin spring housing is established horizontal guide post is outside, when the lifting machine normally works the stop pin spring is in tensile state. When the limiting block is separated from the pin body, the pin body and the horizontal guide column are simultaneously outwards popped out under the retraction action of the stop pin spring to support the stop block, so that the object carrying tray is prevented from falling.
The extending and retaining mechanism further comprises a jacking spring, and the jacking spring is arranged on the lower portion of the vertical moving rod. The jacking spring is used for upwards supporting the limiting block, so that the limiting block is prevented from falling under the action of dead weight, and the normal operation of the loading tray is ensured. The anti-falling device further comprises a shell, and the shell is arranged outside the support.
Example two
As shown in fig. 1, the present embodiment provides a technical solution: a falling prevention device for a hoist comprises a shell 1, a roller mechanism 2, a bevel gear set 3, a bracket 4, a centrifugal motion mechanism 5, an extending supporting and blocking mechanism 6 and a limit switch 7; the bracket 4 is provided with a first side plate 41 and a second side plate 42 which are perpendicular to each other; the roller mechanism 2 is rotatably arranged on the first side plate 41, and the centrifugal movement mechanism 5 is rotatably arranged on the second side plate 42; a first bevel gear in the bevel gear set 3 is fixedly connected with a wheel shaft 22 of the roller mechanism 2, a second bevel gear is fixedly connected with the centrifugal movement mechanism 5, and the central axes of the first bevel gear and the second bevel gear are vertically arranged; the extending and retaining mechanism 6 and the limit switch 7 are placed on the second side plate 42.
As shown in fig. 2 and 3, the second side plate 42 of the bracket 4 needs to be placed parallel to the horizontal plane, the roller 21 of the roller mechanism 3 needs to be placed close to the vertical column of the elevator, and the vertical column drives the roller 21 to rotate when the loading tray moves up and down. The surface of the roller 21 is provided with a rubber ferrule 211, so that the friction acting force between the roller and the vertical column of the elevator can be increased, and the roller 21 can be better driven to rotate.
As shown in fig. 2 and 4, the centrifugal movement mechanism 5 includes a centrifugal rotating shaft 51, a centrifugal drum 52, and a centrifugal slider 53; the second bevel gear and the centrifugal rotating shaft 51 are fixedly connected with the centrifugal rotating drum 52; the centrifugal rotor 52 comprises a cylindrical support and a curved guide rod, wherein the far end of the curved guide rod is higher than the near end and is in smooth transition; the centrifugal slider 53 consists of two parallel cylindrical rollers and a connecting plate, which when mounted clamp the curved guide rod in the centrifugal rotor 52. The far end is provided with a baffle table, and the maximum stroke of the centrifugal slide block can be limited by the baffle table, so that the centrifugal slide block 53 is prevented from being separated from the bent guide rod.
As shown in fig. 4 to 7, the protruding catch mechanism 6 includes a rotary push rod 61, a horizontal push rod 62, a vertical moving rod 63, a slider rail assembly 64, a jacking spring 65, a catch pin 66, a catch pin spring 67; one end of the rotating push rod 61 is provided with a round hole and sleeved at the fixed column 421 on the second side plate 42; the horizontal sliding block 642 in the sliding block guide rail 641 assembly 64 is fixedly connected with the horizontal push rod 62, and the guide rail 641 is fixedly connected with the second side plate 42; the vertical moving rod 63 comprises an end roller 631, a limiting block 632 and a vertical guide post 633, the end roller 631 contacts with the horizontal push rod 62, the vertical guide post 633 passes through the corresponding openings of the jacking spring 65 and the second side plate 42, when the loading tray operates at a normal speed, the jacking spring 65 is used for upwards supporting the limiting block 632 to prevent the loading tray from falling under the action of self weight, and the normal operation of the loading tray is ensured; the stop pin 66 comprises a horizontal guide post 661 and a pin body 662, the horizontal guide post 661 passes through the stop pin spring 67 and the corresponding opening on the second side plate 42, and the second side plate 42 is provided with an ear seat 422 for the horizontal guide post 661 to pass through.
The working principle is as follows: when the carrying tray stalls and descends, the rotating speed of the roller 21 in the roller mechanism 2 is increased, so that the rotating speed of the two bevel gears in the bevel gear set 3 is increased, the centrifugal rotating drum 52 is driven by the second bevel gear to rotate to a certain speed, the centrifugal force borne by the centrifugal slider 53 enables the centrifugal slider to overcome the self gravity and the friction force with the surface of the curved guide rod, the centrifugal rotating drum 52 moves from the near-center end to the far-center end, and when the carrying tray operates at a normal speed, the centrifugal force borne by the centrifugal slider 53 is not enough to overcome the gravity, so that the centrifugal slider cannot move to the far-center end of the centrifugal rotating drum. When the centrifugal slider 53 moves to the far end of the centrifugal drum 52, the centrifugal slider 53 contacts and pushes the rotating push rod 61 to rotate, the rotating push rod 61 pushes the horizontal push rod 62 to move forwards, the horizontal push rod 62 pushes the vertical moving rod 63 to move downwards, the limit block 632 on the vertical moving rod 63 is separated from the stop pin 66, the stop pin spring 67 retracts, the pin body 662 of the stop pin 66 pops out, the front end of the pin body 662 is connected with a stop block on the vertical column of the lifting machine, the stop block is supported, and the object carrying tray is prevented from falling; at the same time, the stop pin 66 triggers the limit switch 7 to cut off the power supply of the motor of the elevator.
In summary, the anti-falling devices of the two groups of embodiments completely realize the anti-falling function through mechanical transmission, and can respond in time even if the elevator is slightly stalled, so that the reliability is high; the elevator has the characteristics of convenience in installation and use, and the operation requirement can be met only by welding a plurality of stop blocks on the elevator upright post; the adaptability is high, the allowable upper limit of the working speed can be changed by changing the transmission ratio selection of the bevel gear, and the elevator can be conveniently adapted to elevators with different working speeds; when the prevention carries thing tray and falls, can prevent the secondary to destroy for the motor outage through triggering limit switch, be worth using widely.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a lifting machine anti-falling device which characterized in that: the device comprises a roller mechanism, a bevel gear set, a support, a centrifugal movement mechanism, a protruding blocking support mechanism and a limit switch, wherein the support comprises a first side plate and a second side plate, the first side plate and the second side plate are perpendicular to each other and connected, the roller mechanism comprises a roller and a wheel shaft, the roller is arranged at one end of the wheel shaft, the other end of the wheel shaft penetrates through the first side plate and is rotatably connected with the first side plate, the centrifugal movement mechanism is arranged on the second side plate and is rotatably connected with the second side plate, the bevel gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is meshed with the second bevel gear, the central axes of the first bevel gear and the second bevel gear are perpendicular to each other, the first bevel gear is connected with one end of the wheel shaft penetrating through the first side plate, the second bevel gear is connected with the centrifugal movement mechanism, and the protruding blocking support, the position of the extending blocking mechanism is adjusted through the centrifugal motion mechanism, the position of a loading tray of the elevator can be limited, and the extending blocking mechanism can trigger the limit switch to control the on-off of a motor power supply loop of the elevator.
2. The device of claim 1, wherein: the second side plate is placed in parallel with the horizontal plane, the first side plate is placed perpendicular to the horizontal plane, and the roller is tightly attached to the vertical column of the elevator.
3. The device of claim 1, wherein: the centrifugal movement mechanism comprises a centrifugal rotating shaft, a centrifugal rotating drum and a centrifugal sliding block, the centrifugal rotating shaft penetrates through the second side plate and is rotatably connected with the second side plate, the centrifugal rotating drum is sleeved on the upper portion of the centrifugal rotating shaft, and the centrifugal sliding block is arranged on the centrifugal rotating drum and is movably connected with the centrifugal rotating drum.
4. A fall arrest device for a hoisting machine as claimed in claim 3, characterised in that: centrifugal rotary drum includes cylinder support and crooked guide arm, crooked guide arm includes nearly heart end and telecentric mirror, nearly heart end with centrifugal rotary drum connects, and telecentric mirror is higher than nearly heart end, smooth transition between nearly heart end and the telecentric mirror, and crooked guide arm is integrated into one piece spare, centrifugal slider cover is established on the crooked guide arm.
5. The device of claim 4, wherein: the centrifugal slider comprises two cylindrical rollers and a connecting plate which are arranged in parallel, the cylindrical rollers are connected with the upper portion and the lower portion of the connecting plate respectively, a through hole is formed in the centrifugal slider, the bent guide rod is located inside the through hole, the cylindrical rollers are in surface contact with the bent guide rod, and a blocking platform is arranged on the end face of the far end of the bent guide rod.
6. The device of claim 1, wherein: the extending and retaining mechanism comprises a rotating push rod, a horizontal push rod, a vertical moving rod, a sliding block guide rail assembly, a retaining pin and a retaining pin spring, wherein one end of the rotating push rod is provided with a round hole, sleeved on the second side plate and rotationally connected with the second side plate; the horizontal push rod passes through slider guide rail assembly with second curb plate sliding connection, perpendicular carriage release lever runs through the setting of second curb plate and rather than swing joint, the backing pin level sets up first curb plate upper end.
7. The device of claim 6, wherein: the slider guide rail subassembly includes horizontal slider and guide rail, horizontal slider with guide rail sliding connection, it can horizontal slip on the guide rail, the guide rail sets up on the second curb plate, with the second curb plate is integrated into one piece, horizontal push rod sets up horizontal slider upper end to extend to the top to one side, drive during horizontal slider horizontal slip horizontal push rod will vertical movement pole downwardly moving.
8. The device of claim 7 wherein: the vertical moving rod comprises an end roller, a limiting block and a vertical guide post, the vertical guide post penetrates through the second side plate, the end roller is arranged at the top end of the vertical guide post and is extruded by the horizontal push rod, the limiting block is arranged outside the vertical guide post and is located inside the stop pin, and when the elevator stalls, the limiting block is driven by the vertical guide post to move downwards and is separated from the stop pin.
9. The device of claim 8 in which: the stop pin includes the round pin body and horizontal guide post, the round pin body be equipped with stopper shape assorted leads to the groove, the stop pin with horizontal guide post coplanar, horizontal guide post runs through the second curb plate rather than swing joint, be provided with the confession on the second curb plate the ear seat that horizontal guide post runs through, the stop pin spring housing is established horizontal guide post is outside, when the lifting machine normally works the stop pin spring is in tensile state.
10. The device of claim 6, wherein: the extending and retaining mechanism further comprises a jacking spring, the jacking spring is arranged on the lower portion of the vertical moving rod, the anti-falling device further comprises a shell, and the shell is arranged outside the support.
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| CN201911093072.4A CN110821989B (en) | 2019-11-11 | 2019-11-11 | Anti-falling device of elevator |
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| CN201911093072.4A CN110821989B (en) | 2019-11-11 | 2019-11-11 | Anti-falling device of elevator |
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| CN110821989B true CN110821989B (en) | 2020-11-06 |
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|---|---|---|---|---|
| CN112441493B (en) * | 2020-11-20 | 2022-05-13 | 中国十七冶集团有限公司 | Machine room-free elevator with high safety performance for building and use method |
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