CN117585558B - Anti-falling device of lifter - Google Patents
Anti-falling device of lifter Download PDFInfo
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- CN117585558B CN117585558B CN202410080122.XA CN202410080122A CN117585558B CN 117585558 B CN117585558 B CN 117585558B CN 202410080122 A CN202410080122 A CN 202410080122A CN 117585558 B CN117585558 B CN 117585558B
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- driving shaft
- gear
- rod
- trigger
- adjusting ring
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- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- 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
Abstract
The invention relates to the technical field of elevators, in particular to an anti-falling device of an elevator, which comprises a shell, a driving shaft, an adjusting ring, a brake hub, a brake assembly and a plurality of trigger rods. The adjusting ring is sleeved on the driving shaft, a plurality of trigger rods are uniformly distributed in the circumferential direction of the adjusting ring, a first magnetic rod is arranged at one end of each trigger rod, which is close to the brake hub, and a second magnetic rod matched with the first magnetic rod is arranged on the brake hub. According to the anti-falling device for the elevator, when the downward running speed of the suspension cage exceeds the rated speed, the repulsive force of the first magnetic rod and the second magnetic rod is utilized to enable the brake hub to synchronously rotate along with the trigger rod, and then the driving shaft is braked through the brake assembly, so that the impact of rotation of the centrifugal block on the brake hub in the traditional technology is avoided, and the service life of the brake hub is prolonged.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an anti-falling device of an elevator.
Background
The anti-falling safety device is the most important safety protection device in the construction elevator, and the specific working principle is as follows: when the construction elevator operates, the pinion of the gear shaft is meshed with the rack on the elevator, the gear shaft rotates along with the gear shaft, the centrifugal block is tightly attached to the centrifugal block seat of the gear shaft under the action of a spring force when the suspension cage operates downwards within a rated speed, when the suspension cage operates downwards beyond the rated speed, the centrifugal block is thrown outwards against the action of the spring force, the tip of the centrifugal block is contacted with the flange on the inner surface of the outer cone body and drives the outer cone body to rotate together, and the copper nut arranged at the shaft end of the outer cone body moves axially along with the outer cone body, so that when the outer cone body rotates, the copper nut moves inwards to compress the butterfly spring, the compression force of friction of the inner cone body and the outer cone body increases along with the rotation of the outer cone body under the reaction force of the butterfly spring, and the braking moment also increases gradually until the suspension cage stops moving.
In conclusion, the anti-falling safety device can limit the overspeed operation of the hanging cage and can effectively prevent the falling accident of the hanging cage. When the cage falls due to stall caused by faults, the anti-falling safety device starts to act and gradually increases the braking moment, and the cage is stably braked within a certain distance, so that the life safety of passengers and the complete damage of equipment are ensured. However, the existing anti-falling safety device can impact the brake hub (the outer cone) when the centrifugal brake block is thrown out, so that the centrifugal brake block is easy to impact and damage the brake hub in the braking process, and the service life of the device is shortened.
Disclosure of Invention
The invention provides an anti-falling device of an elevator, which solves the problems that the conventional anti-falling safety device can impact a brake hub when a centrifugal brake block is thrown out, so that the centrifugal brake block is easy to impact and damage the brake hub in the braking process, and the service life of the device is shortened.
The invention relates to an elevator anti-falling device which adopts the following technical scheme: an anti-falling device of an elevator is used for braking a lifting cage of the elevator and comprises a shell, a driving shaft, an adjusting ring, a braking hub, a braking assembly and a plurality of trigger rods; the driving shaft is arranged along a first direction and can be rotatably arranged in the shell, the adjusting ring is sleeved on the driving shaft and synchronously rotates along with the driving shaft, the plurality of trigger rods are uniformly distributed in the circumferential direction of the adjusting ring and are connected with the adjusting ring, and one ends of the plurality of trigger rods connected with the adjusting ring can be respectively rotatably arranged around the first direction; the brake hub can be rotatably arranged on the driving shaft, the adjusting ring, the trigger rods and the brake hub are gradually far away from the central axis of the driving shaft in the radial direction of the driving shaft, each trigger rod is provided with a first magnetic rod, the brake hub is provided with a second magnetic rod matched with the first magnetic rod, each first magnetic rod and the corresponding second magnetic rod are sequentially arranged in the rotation direction of the driving shaft, and the magnetic poles of the first magnetic rod and the second magnetic rod are identical; when the rotation speed of the driving shaft is within the rated speed, the adjusting ring rotates along with the driving shaft, the first magnetic rod is far away from the second magnetic rod, the trigger rod cannot rotate around the first direction, the first magnetic rod is far away from the second magnetic rod, when the rotation speed of the driving shaft is greater than the rated speed, the trigger rod can rotate around the first direction in the circumferential direction of the adjusting ring under the action of centrifugal force, the first magnetic rod is further moved to one side close to the second magnetic rod, the brake hub is driven to rotate, the brake hub rotates to drive the brake assembly to act, and the brake assembly acts to brake the driving shaft.
Further, the trigger rods are provided with first ends and second ends, the first ends of the trigger rods can be respectively and rotatably arranged on the adjusting ring around a first direction, the second ends of the trigger rods are positioned on one side of the first ends far away from the adjusting ring, and each first magnetic rod is rotatably connected with the second end of one trigger rod correspondingly arranged; the plurality of trigger rods are in a holding state and a throwing state, when the trigger rods are in the holding state, the included angle between the tangent line of the first end of each trigger rod on the adjusting ring and the trigger rod is a first preset value, when the trigger rods are in the throwing state, the included angle between the tangent line of the first end of each trigger rod on the adjusting ring and the trigger rod is a second preset value, the first preset value is smaller than the second preset value, when the rotation speed of the driving shaft is within the rated speed, the plurality of trigger rods are in the holding state, and when the rotation speed of the driving shaft is greater than the rated speed, the driving shaft drives the adjusting ring to rotate, so that the plurality of trigger rods are switched from the holding state to the throwing state under the action of centrifugal force.
Further, the brake assembly comprises a movable ring, a transmission piece and a plurality of friction plates; the movable ring is arranged in the shell and can move along a first direction relative to the shell, the movable ring is connected with the shell through a plurality of first elastic pieces, and the adjusting ring, the brake hub and the movable ring are gradually far away from the central axis of the driving shaft in the radial direction of the driving shaft; the brake hub is provided with an arc-shaped surface, a plurality of friction plates are uniformly distributed in the circumferential direction of the brake hub and are in friction transmission with the arc-shaped surface of the brake hub, the shell is provided with a plurality of adjusting grooves, the adjusting grooves are arc-shaped grooves, each adjusting groove is provided with a head end and a tail end, one end of each friction plate in the first direction can be slidably arranged in each adjusting groove, and the other end of each friction plate in the first direction is rotatably arranged on the movable ring; the friction plate is positioned at the front end of the arc-shaped groove, the first elastic piece is in a natural state, the friction plate is positioned at the tail end of the arc-shaped groove, the first elastic piece is in a stretching state, and the vertical distance from the first contact point to the driving shaft is smaller than the vertical distance from the second contact point to the driving shaft; the rotation of the brake hub can drive the transmission member to act, the transmission member can drive the moving ring to move along the first direction, and the moving ring can enable the friction plate to move from the first contact point to the second contact point.
Further, a plurality of push rods are arranged on one side, close to the friction plate, of the movable ring, the push rods are uniformly distributed in the circumferential direction of the movable ring, the push rods are arranged in the first direction, the friction plate is rotatably arranged on the push rods along one end in the first direction, each first elastic piece is arranged corresponding to one push rod, and each first elastic piece is located between the push rod and the shell which are correspondingly arranged.
Further, the driving piece includes a plurality of kicking blocks, a plurality of kicking blocks set gradually in the circumferencial direction of brake hub, and a plurality of kicking blocks homoenergetic are along the radial direction of driving shaft removal and stretch out brake hub, every kicking block corresponds the setting with a first magnetic pole, one side that the kicking block is close to first magnetic pole is provided with the third magnetic pole, the third magnetic pole is the same with first magnetic pole, the helicla flute has been seted up on the inner peripheral wall of removal ring, one side that the kicking block is close to the removal ring is provided with the chuck, when the kicking block is moved to being close to removal ring one side along the radial direction of driving shaft, the chuck can the joint in the helicla flute, and then impel to remove along first direction.
Further, a limiting cylinder is fixedly arranged on the driving shaft, the limiting cylinder is positioned on one side of the triggering rod, which is far away from the central axis of the driving shaft, the first magnetic rod is arranged along the radial direction of the driving shaft, and the first magnetic rod penetrates through the limiting cylinder; the second magnetic rod is arranged along the radial direction of the driving shaft; the clamping block is arranged on the peripheral wall surface of the adjusting ring, which is close to one side of the central axis of the driving shaft, the adjusting ring is provided with a mounting groove, the clamping block can be telescopically arranged in the mounting groove along the radial direction of the adjusting ring, when the rotating speed of the driving shaft is in the rated speed, the clamping block is retracted into the mounting groove, the driving shaft is provided with a clamping groove, the clamping block can be clamped in the clamping groove, the adjusting ring is connected with the driving shaft through a torsion spring, and the torsion spring always has a trend of promoting the clamping block to rotate in the direction away from the clamping groove.
Further, still include the reset lever, the driving shaft includes first axle section and second axle section, and first axle section is solid section, and the second axle section is hollow section, first axle section and second axle section rigid coupling, and integrated into one piece structure, the draw-in groove is seted up on the second axle section, and the reset lever can insert in the second axle section.
Further, the device further comprises a force increasing component, the force increasing component comprises a deformation belt, the deformation belt is of a planar spiral structure, the deformation belt can be gradually wound in the downward process of the suspension cage, a plurality of third elastic pieces are arranged in the circumferential direction of the deformation belt, each third elastic piece is arranged corresponding to one friction plate, and the deformation belt is connected with the friction plate.
Further, still include the reducing gear assembly, the reducing gear assembly includes first gear, the second gear, third gear and fourth gear, first gear is fixed to be set up on the driving shaft, and the diameter of first gear is less than the diameter of driving gear, the second gear rotates and installs in the shell, second gear and first gear engagement, the third gear is installed in the shell, third gear and the coaxial setting of second gear, and synchronous rotation, fourth gear rotates and installs on the driving shaft, and fourth gear and third gear engagement, the diameter of fourth gear is greater than the diameter of third gear, fixedly connected with synchronous rotary drum on the fourth gear, synchronous rotary drum and fourth gear coaxial setting and rotation are installed on the driving shaft, the one end fixed connection of deformation area is on synchronous rotary drum, the other end and the shell internal face rigid coupling of deformation area.
Further, the trigger lever is provided in four.
The beneficial effects of the invention are as follows: according to the anti-falling device for the lifter, the adjusting ring, the brake hub, the brake assembly and the trigger rods are arranged to be matched, when the anti-falling device is used, in a normal working state of the lifter cage, the lifter cage descends in a rated speed, the rack drives the driving gear to rotate at the rated speed so as to drive the driving shaft to rotate in the rated speed, when the downward running speed of the cage exceeds the rated speed, the driving gear drives the driving shaft to change with the speed of the cage in a follow-up mode, the rotating speed of the driving shaft is enabled to be higher than the rated speed, the trigger rods can rotate around the first direction respectively under the action of centrifugal force, the first magnetic force rod moves towards one side close to the second magnetic force rod, the repulsive force of the first magnetic force rod and the second magnetic force rod is utilized, the brake hub is driven to synchronously rotate along with the trigger rods through the brake assembly, the traditional braking mode is changed, the fact that the centrifugal block rotates the brake hub in the traditional technology is avoided, and the service life of the brake hub is further prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the overall construction of an embodiment of an elevator fall protection device of the present invention;
FIG. 2 is a schematic illustration of an embodiment of an elevator fall protection device of the present invention with a housing removed;
FIG. 3 is a top view of the overall structure of an embodiment of an elevator fall protection device of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view at B in FIG. 4;
FIG. 6 is a schematic view of an embodiment of an elevator fall protection device of the present invention with a friction plate and a braking hub arcuate surface at a second contact point;
FIG. 7 is a cross-sectional view taken along line C-C of FIG. 3;
FIG. 8 is a schematic view of a portion of the structure of the interior of the housing of an embodiment of an elevator fall protection device of the present invention;
FIG. 9 is a schematic view of the housing of an embodiment of an elevator fall protection device of the present invention;
FIG. 10 is a schematic view of a top piece of an embodiment of an elevator fall protection device of the present invention;
FIG. 11 is a schematic view of a drive shaft of an embodiment of an elevator fall protection device of the present invention;
FIG. 12 is a schematic view of a brake hub of an embodiment of an elevator fall protection device of the present invention;
fig. 13 is a schematic view of an adjustment ring of an embodiment of an elevator fall protection device of the present invention.
In the figure: 100. a housing; 101. a first mounting hole; 102. a second mounting hole; 103. an adjustment tank; 104. a third mounting hole; 105. a fourth mounting hole; 200. a driving shaft; 201. a drive gear; 202. a limiting cylinder; 203. a guide hole; 204. a clamping groove; 300. an adjusting ring; 301. a clamping block; 302. a hinge rod; 400. a brake hub; 401. a first through groove; 402. an arc surface; 410. a second magnetic rod; 500. a trigger lever; 510. a first magnetic bar; 600. a moving ring; 601. a sliding block; 602. a push rod; 610. a first elastic member; 700. a top block; 710. a third magnetic block; 720. a chuck; 730. a second elastic member; 800. a friction plate; 900. a deformation belt; 910. a third elastic member; 920. a deceleration assembly; 921. a first gear; 922. a second gear; 923. a third gear; 924. a fourth gear; 925. the drums are synchronized.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of an elevator fall arrest device of the present invention is shown in figures 1 to 13.
An elevator fall protection device for braking an elevator cage includes a housing 100, a drive shaft 200, an adjustment ring 300, a brake hub 400, a brake assembly, and a plurality of trigger bars 500.
The drive shaft 200 is rotatably mounted in the housing 100 along a first direction, which is an axial direction of the drive shaft 200. Specifically, the housing 100 has a first mounting hole 101 and a second mounting hole 102 thereon, and the driving shaft 200 is rotatably coupled to the housing 100 through the first mounting hole 101 and the second mounting hole 102. One end of the driving shaft 200 is fixedly provided with a driving gear 201, the driving gear 201 is used for being meshed with a rack on the elevator, in a normal working state of the elevator cage, the elevator cage runs downwards at a rated speed, the rack drives the driving gear 201 to rotate at the rated speed, and then the driving shaft 200 is driven to rotate, and when the downward running speed of the cage exceeds the rated speed, the driving gear 201 drives the driving shaft 200 and the speed of the cage to change in a follow-up manner.
The adjusting ring 300 is sleeved on the driving shaft 200, the plurality of trigger rods 500 are uniformly distributed in the circumferential direction of the adjusting ring 300, the plurality of trigger rods 500 are connected with the adjusting ring 300, and one ends of the plurality of trigger rods 500 connected with the adjusting ring 300 can be respectively and rotatably arranged around the first direction. The brake hub 400 is rotatably mounted on the driving shaft 200, the adjusting ring 300, the trigger rods 500 and the brake hub 400 are gradually disposed away from the central axis of the driving shaft 200 in the radial direction of the driving shaft 200, each trigger rod 500 is provided with a first magnetic rod 510, the brake hub 400 is provided with a second magnetic rod 410 matched with the first magnetic rod 510, each first magnetic rod 510 and the corresponding second magnetic rod 410 are sequentially disposed in the rotation direction of the driving shaft 200, and the magnetic poles of the first magnetic rod 510 and the second magnetic rod 410 are identical.
When the rotational speed of the driving shaft 200 is within the rated speed, the trigger lever 500 cannot rotate around the first direction, the first magnetic lever 510 is far away from the second magnetic lever 410, and when the rotational speed of the driving shaft 200 is greater than the rated speed, the trigger lever 500 can rotate around the first direction respectively under the action of centrifugal force, so that the first magnetic lever 510 moves to the side close to the second magnetic lever 410, and the brake hub 400 is caused to rotate, the brake hub 400 rotates to drive the brake assembly to act, and the brake assembly acts to brake the driving shaft 200.
Specifically, the trigger lever 500 is provided in four. Four hinging rods 302 are arranged on the adjusting ring 300, the four hinging rods 302 are all arranged along the first direction, the four hinging rods 302 are uniformly distributed in the circumferential direction of the adjusting ring 300, and the four triggering rods 500 are respectively hinged on the four hinging rods 302.
In this embodiment, by setting the adjusting ring 300, the brake hub 400, the brake assembly and the plurality of trigger rods 500 to cooperate, in use, in a normal operating state of the elevator cage, the elevator cage descends within a rated speed, the rack will drive the driving gear 201 to rotate at the rated speed, and further drive the driving shaft 200 to rotate, the trigger rods 500 cannot rotate around the first direction, and the first magnetic rod 510 is set away from the second magnetic rod 410. When the cage downward running speed exceeds the rated speed, the driving gear 201 drives the driving shaft 200 to change with the speed of the cage. The rotation speed of the driving shaft 200 is higher than the rated speed, the first magnetic rod 510 moves to the side close to the second magnetic rod 410, the braking hub 400 is driven to synchronously rotate along with the triggering rod 500 by utilizing the repulsive force of the first magnetic rod 510 and the second magnetic rod 410 in the direction that the driving shaft 200 drives the triggering rod 500 to rotate, the rotation of the braking hub 400 is realized, then the driving shaft 200 is braked by the braking assembly, the traditional braking mode is changed, the impact of the rotation of the centrifugal block on the braking hub 400 in the traditional technology is avoided while the braking is realized, and the service life of the braking hub 400 is further prolonged.
In this embodiment, the trigger rods 500 have a first end and a second end, the first ends of the trigger rods 500 are respectively rotatably mounted on the adjusting ring 300 around a first direction, the second ends of the trigger rods 500 are located at a side of the first ends away from the adjusting ring 300, and each first magnetic rod 510 is rotatably connected with the second end of one of the trigger rods 500 correspondingly disposed. The plurality of trigger levers 500 each have a holding state and a throwing state, when in the holding state, an included angle between a tangent line of a first end of each trigger lever 500 on the adjusting ring 300 and the trigger lever 500 is a first preset value, when in the throwing state, an included angle between a tangent line of a first end of each trigger lever 500 on the adjusting ring 300 and the trigger lever 500 is a second preset value, the first preset value is smaller than the second preset value, when the rotation speed of the driving shaft 200 is within a rated speed, the plurality of trigger levers 500 are in the holding state, and when the rotation speed of the driving shaft 200 is greater than the rated speed, the driving shaft 200 drives the adjusting ring 300 to rotate, so that the plurality of trigger levers 500 are switched from the holding state to the throwing state under the action of centrifugal force.
In this embodiment, by synchronously adjusting the lifting speed of the cage and the rotation speed of the driving shaft 200, and rotating the adjusting ring 300 along with the driving shaft 200, the centrifugal force applied to the trigger rods 500 is correspondingly changed, when the rotation speed of the driving shaft 200 is within the rated speed, the included angle between the tangent line of the first end of each trigger rod 500 on the adjusting ring 300 and the trigger rod 500 is a first preset value, when the rotation speed of the driving shaft 200 is greater than the rated speed, the included angle between the tangent line of the first end of each trigger rod 500 on the adjusting ring 300 and the trigger rod 500 is changed to a second preset value, and the first preset value is smaller than the second preset value, that is, the distance from the second end of the trigger rod 500 to the central axis of the driving shaft 200 before rotation is smaller than the distance from the second end of the trigger rod 500 to the central axis of the driving shaft 200 after rotation, and then the first magnetic rod 510 moves in the direction approaching to the second magnetic rod 410 in the radial direction of the adjusting ring 300, so that the first magnetic rod 510 can repel each second magnetic rod 410.
In this embodiment, the brake assembly includes a shift ring 600, a transmission, and a plurality of friction plates 800. The moving ring 600 is installed in the housing 100 to be movable in a first direction with respect to the housing 100, and the moving ring 600 is connected to the housing 100 through a plurality of first elastic members 610, and the adjusting ring 300, the brake hub 400, and the moving ring 600 are disposed gradually away from the central axis of the driving shaft 200 in the radial direction of the driving shaft 200. The brake hub 400 is provided with an arc-shaped surface 402, a plurality of friction plates 800 are uniformly distributed in the circumferential direction of the brake hub 400 and are in friction transmission with the arc-shaped surface 402 of the brake hub 400, a plurality of adjusting grooves 103 are formed in the shell 100, the adjusting grooves 103 are arc-shaped grooves, the adjusting grooves 103 are uniformly distributed in the shell 100 along the circumferential direction of the shell 100, the adjusting grooves 103 are provided with a head end and a tail end, one end of each friction plate 800 in the first direction can be slidably mounted in the adjusting groove 103, and the other end of each friction plate 800 in the first direction can be rotatably mounted on the movable ring 600.
The friction plate 800 and the arcuate surface 402 of the brake hub 400 have a first contact point and a second contact point therebetween, the friction plate 800 is located at the head end of the arcuate slot when the first contact point is located, the first elastic member 610 is in a natural state, the friction plate 800 is located at the tail end of the arcuate slot when the second contact point is located, the first elastic member 610 is in a stretched state, and the vertical distance from the first contact point to the driving shaft 200 is smaller than the vertical distance from the second contact point to the driving shaft 200. Rotation of the brake hub 400 can drive a transmission motion, which can drive the shift ring 600 to move in a first direction, and movement of the shift ring 600 can move the friction plate 800 from a first contact point to a second contact point.
Specifically, a sliding block 601 is provided on an outer circumferential wall surface of the moving ring 600, the sliding block 601 is provided along a first direction, and a first sliding groove for being engaged with the sliding block 601 is provided in the housing 100, so that the moving ring 600 can move along the first direction with respect to the housing 100. The movable ring 600 is provided with a plurality of push rods 602 near one side of the friction plate 800, the plurality of push rods 602 are uniformly distributed in the circumferential direction of the movable ring 600, the plurality of push rods 602 are all arranged along the first direction, one end of the friction plate 800 along the first direction is rotatably mounted on the push rods 602, each first elastic piece 610 is correspondingly arranged with one push rod 602, and each first elastic piece 610 is located between the corresponding push rod 602 and the shell 100.
Further, the transmission member includes a plurality of top blocks 700, the plurality of top blocks 700 are sequentially disposed in the circumferential direction of the brake hub 400, and the plurality of top blocks 700 can all move along the radial direction of the driving shaft 200 and extend out of the brake hub 400, each top block 700 is disposed corresponding to one first magnetic rod 510, one side of the top block 700 close to the first magnetic rod 510 is provided with a third magnetic block 710, the magnetic poles of the third magnetic block 710 and the first magnetic rod 510 are the same, the inner circumferential wall surface of the moving ring 600 is provided with a spiral groove, one side of the top block 700 close to the moving ring 600 is provided with a chuck 720, and when the top block 700 moves along the radial direction of the driving shaft 200 towards one side close to the moving ring 600, the chuck 720 can be clamped in the spiral groove, so as to promote the moving ring 600 to move along the first direction.
Specifically, the top blocks 700 are mounted on the inner circumferential wall surface of the brake hub 400 by the second elastic members 730, and the second elastic members 730 are disposed along the radial direction of the driving shaft 200 such that the plurality of top blocks 700 can each move along the radial direction of the driving shaft 200, and the second elastic members 730 always have a tendency to urge the top blocks 700 to move in a direction away from the moving ring 600. The brake hub 400 is provided with a first through groove 401, and the top block 700 is mounted in the first through groove 401 so as to be movable in the radial direction of the drive shaft 200.
In this embodiment, by arranging the movable ring 600, the transmission member and the plurality of friction plates 800 to cooperate, when the rotational speed of the driving shaft 200 is greater than the rated speed, the trigger rod 500 is made to rotate in the first direction under the action of centrifugal force, so that the first magnetic rod 510 moves to a side close to the second magnetic rod 410, and the brake hub 400 is caused to rotate, at the same time, the first magnetic rod 510 moves to a side close to the second magnetic rod 410, and the magnetic poles between the first magnetic rod 510 and the third magnetic block 710 interact, so that the third magnetic block 710 and the first magnetic rod 510 repel each other, so that the third magnetic block 710 can overcome the action of the second elastic member 730, and push the top block 700 to move to a side close to the movable ring 600 along the radial direction of the driving shaft 200, and extend out of the brake hub 400, and cause the chuck 720 to be clamped into the spiral groove on the movable ring 600, and then, with the rotation of the brake hub 400, the rotation of the brake hub 400 will drive the top block 700 to rotate, and cause the chuck 720 to slide in the spiral groove, so that the movable ring 600 moves along the first magnetic rod 510 and the magnetic pole between the first magnetic rod 510 and the third magnetic rod 710, and the first magnetic rod 710, so that the third magnetic rod 710 repel each other, and the first magnetic rod 710, so that the first magnetic rod 710 can move against the action of the second magnetic rod 710, and the second magnetic rod, so that the first magnetic rod, and the first magnetic rod 600, and the second magnetic rod.
According to the moment formula m=fl, where F represents the magnitude of force, i.e., the magnitude of friction force between the friction plate 800 and the brake hub 400, L represents the distance of the moment arm, i.e., the vertical distance from the contact point to the driving shaft 200, as can be seen with reference to fig. 5 and 6, when the contact point between the friction plate 800 and the brake hub 400 moves from the first contact point to the second contact point, F is unchanged, L increases, the brake moment increases, and the lifting device can be braked by increasing the moment arm. And the arrangement of the cambered surface on the brake hub 400 can switch the friction part in the motion process of the friction plate 800, so that the overheat phenomenon caused by braking friction is avoided.
In this embodiment, an anti-falling device for an elevator further includes a force increasing component, where the force increasing component includes a deformation belt 900, where the deformation belt 900 is of a planar spiral structure, and when the driving shaft 200 rotates, the deformation belt 900 can be driven to rotate, so that the deformation belt 900 is wound or unwound, and by setting, the deformation belt 900 can be gradually wound in a downward cage process, multiple third elastic members 910 are disposed in a circumferential direction of the deformation belt 900, and each third elastic member 910 is disposed corresponding to one friction plate 800, and connects the deformation belt 900 with the friction plate 800.
Further, an elevator anti-falling device further includes a speed reducing assembly 920, the speed reducing assembly 920 includes a first gear 921, a second gear 922, a third gear 923 and a fourth gear 924, the first gear 921 is fixedly disposed on the driving shaft 200, the diameter of the first gear 921 is smaller than that of the driving gear 201, the second gear 922 is rotatably mounted in the housing 100, the second gear 922 is meshed with the first gear 921, the third gear 923 is mounted in the housing 100, the third gear 923 is coaxially disposed with the second gear 922 and synchronously rotates, the fourth gear 924 is rotatably mounted on the driving shaft 200, the fourth gear 924 is meshed with the third gear 923, the diameter of the fourth gear 924 is larger than that of the third gear 923, a synchronous drum 925 is fixedly connected to the fourth gear 924, the synchronous drum 925 is coaxially disposed with the fourth gear 924 and rotatably mounted on the driving shaft 200, one end of the deformation belt 900 is fixedly connected to the synchronous drum 925, the other end of the deformation belt 900 is fixedly connected with the inner wall surface of the housing 100, and the rotational speed of the deformation belt 900 is reduced by setting up the speed changing assembly, and further the winding speed of the deformation belt 900 is reduced, and the winding speed of the deformation belt 900 is prevented from being fast.
Specifically, the housing 100 is provided with a third mounting hole 104, the second gear 922 is rotatably mounted in the third mounting hole 104, the housing 100 is provided with a fourth mounting hole 105 therein, and the third gear 923 is rotatably mounted in the fourth mounting hole 105.
In this embodiment, the deformation belt 900 is set, and the deformation belt 900 is connected with the friction plate 800 through the third elastic member 910, and by setting, the deformation belt 900 is gradually wound in the downward process of the cage, and if the deformation belt 900 is driven to rotate forward by the driving shaft 200 through the reduction assembly 920 and to be relaxed in the forward rotation when the cage is lifted, the deformation belt 900 is driven to rotate reversely by the driving shaft 200 through the reduction assembly 920 in the reverse rotation when the cage is lifted, when the downward running speed of the cage exceeds the rated speed, braking is started at this time, and in the braking process, the third elastic member 910 is continuously stretched due to the winding effect of the deformation belt 900, and then the friction plate 800 is pulled, so that the positive pressure between the friction plate 800 and the arc-shaped surface 402 of the brake hub 400 is continuously increased, namely, according to the moment formula m=fl, the magnitude of F is increased while L is increased, and the braking moment is further increased, and the braking speed is accelerated to a certain extent.
In this embodiment, the driving shaft 200 is fixedly provided with a limiting cylinder 202, the limiting cylinder 202 is located at one side of the trigger lever 500 away from the central axis of the driving shaft 200, the first magnetic rod 510 is disposed along the radial direction of the driving shaft 200, and the first magnetic rod 510 passes through the limiting cylinder 202. The second magnetic pole 410 is disposed in the radial direction of the driving shaft 200. Specifically, the limiting cylinder 202 is provided with a guide hole 203, and the first magnetic rod 510 passes through the guide hole 203.
The clamping block 301 is arranged on the peripheral wall surface of the adjusting ring 300, which is close to one side of the central axis of the driving shaft 200, the adjusting ring 300 is provided with a mounting groove, the clamping block 301 can be telescopically arranged in the mounting groove along the radial direction of the adjusting ring 300, the driving shaft 200 is provided with the clamping groove 204, the clamping block 301 can be clamped in the clamping groove 204, the adjusting ring 300 is connected with the driving shaft 200 through a torsion spring, and the torsion spring always has a trend of promoting the clamping block 301 to rotate in the direction away from the clamping groove 204. When the rotational speed of the driving shaft 200 is within the rated speed, the cartridge 301 is retracted into the mounting groove.
In this embodiment, by setting the clamping block 301 and the torsion spring to cooperate, when the rotation speed of the driving shaft 200 is within the rated speed, the adjusting ring 300 and the driving shaft 200 keep a relatively static state, the driving shaft 200 drives the adjusting ring 300 to rotate through the torsion spring, at this time, the clamping block 301 and the clamping groove 204 are not in the same circumferential direction, the clamping block 301 is retracted into the mounting groove, when the rotation speed of the driving shaft 200 is greater than the rated speed, the speed of the driving shaft 200 is suddenly increased, and then the driving shaft 200 rotates relative to the adjusting ring 300, and since the limiting cylinder 202 is fixedly connected with the driving shaft 200, the limiting cylinder 202 rotates relative to the adjusting ring 300, and then the triggering rod 500 is driven by the first magnetic rod 510 to rotate under the action of centrifugal force and extend towards the second magnetic rod 410.
Meanwhile, the driving shaft 200 rotates relative to the adjusting ring 300 to store the force of the torsion spring, drives the clamping groove 204 to rotate relative to the clamping block 301 until the clamping groove 204 and the clamping block 301 are overlapped in the circumferential direction, the clamping block 301 stretches out of the mounting groove and is clamped in the clamping groove 204, then drives the adjusting ring 300 and the driving shaft 200 to rotate, and after the clamping block 301 is clamped in the clamping groove 204 due to the limiting effect of the limiting cylinder 202, the adjusting ring 300 and the limiting cylinder 202 fixed on the driving shaft 200 are kept relatively still again, so that the trigger rod 500 is also kept in a rotated state, and the first magnetic rod 510 is kept in a state capable of interacting with the second magnetic rod 410 and the third magnetic rod 710 respectively and cannot be reset.
In this embodiment, an anti-falling device for an elevator further includes a reset rod, where the driving shaft 200 includes a first shaft section and a second shaft section, the first shaft section is a solid section, the second shaft section is a hollow section, the first shaft section and the second shaft section are fixedly connected, and are of an integrally formed structure, the clamping groove 204 is formed on the second shaft section, the reset rod can be inserted into the second shaft section, and after the reset rod is inserted into the second shaft section, the clamping block 301 will retract into the mounting groove under the pushing action of the reset rod, so that the torsion spring releases torsion force, and drives the driving shaft 200 to rotate back to a state when the rotation speed is less than or equal to the rated speed.
In this embodiment, by setting the driving shaft 200 to be a solid first shaft section and a hollow second shaft section, after the braking hub 400 and the friction plate 800 cooperate to brake the suspension cage, the restoring rod can be inserted into the second shaft section, after the restoring rod is inserted into the second shaft section, the clamping block 301 will retract into the mounting groove under the pushing action of the restoring rod, so that the torsion spring releases the torsion force, and drives the adjusting ring 300 to rotate, the adjusting ring 300 rotates to drive the triggering rod 500 to rotate, the triggering rod 500 rotates to drive the first magnetic rod 510 to retract to a side far from the second magnetic rod 410 and the third magnetic block 710, and then the top block 700 retracts under the action of the second elastic member 730, and after the top block 700 retracts to no longer clamp the moving ring 600, the first elastic member 610 resets and pushes the moving ring 600 to reset. Meanwhile, the first elastic piece 610 pulls the friction plate 800 to move, so that the friction plate 800 returns to the head end of the adjusting groove 103 from the tail end of the adjusting groove 103, and resetting is completed.
By combining the above embodiments, the specific working principle and working process are as follows:
when the device is used, in a normal working state of the elevator cage, the elevator cage descends at a rated speed, the rack drives the driving gear 201 to rotate at the rated speed and further drives the driving shaft 200 to rotate, at the moment, the adjusting ring 300 and the driving shaft 200 keep a relatively static state, the driving shaft 200 drives the adjusting ring 300 to rotate through the torsion spring, at the moment, the clamping block 301 and the clamping groove 204 are not in the same circumferential direction, the clamping block 301 is retracted into the mounting groove, an included angle between a tangent line of a first end of each trigger rod 500 on the adjusting ring 300 and the trigger rod 500 is a first preset value, the trigger rod 500 cannot rotate around the first direction, the first magnetic rod 510 is far away from the second magnetic rod 410, and the brake hub 400 cannot rotate.
When the cage downward running speed exceeds the rated speed, the driving gear 201 drives the driving shaft 200 to change with the speed of the cage. When the rotation speed of the driving shaft 200 is greater than the rated speed, the speed of the driving shaft 200 is suddenly increased, so that the driving shaft 200 rotates relative to the adjusting ring 300, and the limiting cylinder 202 is fixedly connected with the driving shaft 200, so that the limiting cylinder 202 rotates relative to the adjusting ring 300, and the triggering rod 500 is driven by the first magnetic rod 510 to rotate under the action of centrifugal force and extend towards the second magnetic rod 410. The included angle between the tangent line of the first end of each trigger lever 500 on the adjusting ring 300 and the trigger lever 500 is changed to a second preset value, and the first preset value is smaller than the second preset value, that is, the distance from the second end of the trigger lever 500 to the central axis of the driving shaft 200 before rotation is smaller than the distance from the second end of the trigger lever 500 to the central axis of the driving shaft 200 after rotation.
Meanwhile, the driving shaft 200 rotates relative to the adjusting ring 300 to store the force of the torsion spring, drives the clamping groove 204 to rotate relative to the clamping block 301 until the clamping groove 204 and the clamping block 301 are overlapped in the circumferential direction, the clamping block 301 stretches out of the mounting groove and is clamped in the clamping groove 204, then drives the adjusting ring 300 and the driving shaft 200 to rotate, and after the clamping block 301 is clamped in the clamping groove 204 due to the limiting effect of the limiting cylinder 202, the adjusting ring 300 and the limiting cylinder 202 fixed on the driving shaft 200 are kept relatively still again, so that the trigger rod 500 is also kept in a rotated state, and the first magnetic rod 510 is kept in a state capable of interacting with the second magnetic rod 410 and the third magnetic rod 710 respectively and cannot be reset. The repulsive force of the first magnetic rod 510 and the second magnetic rod 410 is utilized to drive the brake hub 400 to synchronously rotate along with the trigger rod 500 in the direction that the driving shaft 200 drives the trigger rod 500 to rotate, so that the brake hub 400 rotates.
When the rotation speed of the driving shaft 200 is greater than the rated speed, the trigger rod 500 rotates around the first direction under the action of centrifugal force, so that the first magnetic rod 510 moves to the side close to the second magnetic rod 410, and the brake hub 400 rotates, and simultaneously, the first magnetic rod 510 moves to the side close to the second magnetic rod 410, the magnetic poles between the first magnetic rod 510 and the third magnetic rod 710 interact, so that the third magnetic rod 710 and the first magnetic rod 510 repel each other, the third magnetic rod 710 can overcome the action of the second elastic piece 730, the top block 700 is pushed to move to the side close to the movable ring 600 along the radial direction of the driving shaft 200, the brake hub 400 extends out, the clamp 720 is clamped into a spiral groove on the movable ring 600, then the brake hub 400 rotates to drive the top block 700 to slide in the spiral groove, the movable ring 600 moves along the first direction under the action of the spiral groove and the clamp 720, and the movable ring 600 moves to stretch the first elastic piece 710, so that the tail end 103 pulls the first elastic piece 103 to move from the first friction groove 103 to the second friction groove 800 to the contact point 800, and the friction plate 800 moves from the first friction groove to the friction groove 800 as shown in the adjusting state 5.
According to the moment formula m=fl, where F represents the magnitude of force, i.e., the magnitude of friction force between the friction plate 800 and the brake hub 400, L represents the distance of the moment arm, i.e., the vertical distance from the contact point to the driving shaft 200, as can be seen with reference to fig. 5 and 6, when the contact point between the friction plate 800 and the brake hub 400 moves from the first contact point to the second contact point, F is unchanged, L increases, the brake moment increases, and the lifting device can be braked by increasing the moment arm. And the arrangement of the cambered surface on the brake hub 400 can switch the friction part in the motion process of the friction plate 800, so that the overheat phenomenon caused by braking friction is avoided.
And when the downward running speed of the cage exceeds the rated speed, braking is started at this time, and in the braking process, due to the winding action of the deformation belt 900, the third elastic member 910 is continuously stretched, and the friction plate 800 is pulled, so that the positive pressure between the friction plate 800 and the arc-shaped surface 402 of the brake hub 400 is continuously increased, that is, according to the moment formula m=fl, the magnitude of F is increased while L is increased, the braking moment is further increased, and the braking speed is further increased.
After the braking hub 400 and the friction plate 800 cooperate to brake the cage, the reset rod can be inserted into the second shaft section, after the reset rod is inserted into the second shaft section, the clamping block 301 is retracted into the mounting groove under the pushing action of the reset rod, so that the torsion spring releases torsion force and drives the driving shaft 200 to rotate relative to the adjusting ring 300 again, and the driving shaft 200 rotates to drive the limiting cylinder 202 fixedly connected with the driving shaft to rotate, so that the limiting cylinder 202 reversely rotates under the action of the torsion spring, and the first magnetic rod 510 drives the trigger rod 500 to rotate, so that the first magnetic rod 510 is retracted to one side far from the second magnetic rod 410 and the third magnetic block 710, so that the top block 700 is retracted under the action of the second elastic piece 730, and after the top block 700 is retracted to no longer clamp the moving ring 600, the first elastic piece 610 resets and pushes the moving ring 600 to reset. Meanwhile, the first elastic piece 610 pulls the friction plate 800 to move, so that the friction plate 800 returns to the head end of the adjusting groove 103 from the tail end of the adjusting groove 103, and resetting is completed.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a fall device is prevented to lift for brake to lift cage, its characterized in that: the brake device comprises a shell, a driving shaft, an adjusting ring, a brake hub, a brake assembly and a plurality of trigger rods; the driving shaft is arranged along a first direction and can be rotatably arranged in the shell, the adjusting ring is sleeved on the driving shaft, the plurality of trigger rods are uniformly distributed in the circumferential direction of the adjusting ring and are connected with the adjusting ring, and one ends of the plurality of trigger rods connected with the adjusting ring can be respectively rotatably arranged around the first direction; the brake hub can be rotatably arranged on the driving shaft, the adjusting ring, the trigger rods and the brake hub are gradually far away from the central axis of the driving shaft in the radial direction of the driving shaft, each trigger rod is provided with a first magnetic rod, the brake hub is provided with a second magnetic rod matched with the first magnetic rod, each first magnetic rod and the corresponding second magnetic rod are sequentially arranged in the rotation direction of the driving shaft, and the magnetic poles of the first magnetic rod and the second magnetic rod are identical; when the rotation speed of the driving shaft is within the rated speed, the trigger rod cannot rotate around the first direction, the first magnetic rod is far away from the second magnetic rod, and when the rotation speed of the driving shaft is greater than the rated speed, the trigger rod can rotate around the first direction in the circumferential direction of the adjusting ring under the action of centrifugal force, so that the first magnetic rod moves to one side close to the second magnetic rod and drives the brake hub to rotate, the brake hub rotates to drive the brake assembly to act, and the brake assembly acts to brake the driving shaft;
The brake assembly comprises a movable ring, a transmission piece and a plurality of friction plates; the movable ring is arranged in the shell and can move along a first direction relative to the shell, the movable ring is connected with the shell through a plurality of first elastic pieces, and the adjusting ring, the brake hub and the movable ring are gradually far away from the central axis of the driving shaft in the radial direction of the driving shaft; the brake hub is provided with an arc-shaped surface, a plurality of friction plates are uniformly distributed in the circumferential direction of the brake hub and are in friction transmission with the arc-shaped surface of the brake hub, the shell is provided with a plurality of adjusting grooves, the adjusting grooves are arc-shaped grooves, each adjusting groove is provided with a head end and a tail end, one end of each friction plate in the first direction can be slidably arranged in each adjusting groove, and the other end of each friction plate in the first direction is rotatably arranged on the movable ring; the friction plate is positioned at the front end of the arc-shaped groove, the first elastic piece is in a natural state, the friction plate is positioned at the tail end of the arc-shaped groove, the first elastic piece is in a stretching state, and the vertical distance from the first contact point to the driving shaft is smaller than the vertical distance from the second contact point to the driving shaft; the rotation of the brake hub can drive the transmission member to act, the transmission member can drive the movable ring to move along the first direction, and the movable ring can move to enable the friction plate to move from the first contact point to the second contact point; a plurality of push rods are arranged on one side of the movable ring, which is close to the friction plate, the push rods are uniformly distributed in the circumferential direction of the movable ring, the push rods are arranged along the first direction, one end of the friction plate along the first direction is rotatably arranged on the push rods, each first elastic piece is arranged corresponding to one push rod, and each first elastic piece is positioned between the push rod and the shell which are correspondingly arranged; the driving piece includes a plurality of kicking blocks, a plurality of kicking blocks set gradually in the circumference direction of brake hub, and a plurality of kicking blocks all can follow the radial direction of driving shaft and remove and stretch out brake hub, every kicking block corresponds the setting with a first magnetic pole, one side that the kicking block is close to first magnetic pole is provided with the third magnetic block, the third magnetic block is the same with first magnetic pole, the helicla flute has been seted up on the interior perisporium of removal ring, one side that the kicking block is close to the removal ring is provided with the chuck, when the kicking block is removed to being close to removal ring one side along the radial direction of driving shaft, the chuck can the joint in the helicla flute, and then impel the removal ring to remove along first direction.
2. An elevator fall arrest device as defined in claim 1, wherein: the first ends of the plurality of trigger rods can be respectively and rotatably arranged on the adjusting ring around a first direction, the second ends of the trigger rods are positioned on one side of the first ends far away from the adjusting ring, and each first magnetic rod is rotatably connected with the second end of one trigger rod correspondingly arranged; the plurality of trigger rods are in a holding state and a throwing state, when the trigger rods are in the holding state, the included angle between the tangent line of the first end of each trigger rod on the adjusting ring and the trigger rod is a first preset value, when the trigger rods are in the throwing state, the included angle between the tangent line of the first end of each trigger rod on the adjusting ring and the trigger rod is a second preset value, the first preset value is smaller than the second preset value, when the rotation speed of the driving shaft is within the rated speed, the plurality of trigger rods are in the holding state, and when the rotation speed of the driving shaft is greater than the rated speed, the driving shaft drives the adjusting ring to rotate, so that the plurality of trigger rods are switched from the holding state to the throwing state under the action of centrifugal force.
3. An elevator fall arrest device as defined in claim 1, wherein: a limiting cylinder is fixedly arranged on the driving shaft, the limiting cylinder is positioned on one side of the triggering rod, which is far away from the central axis of the driving shaft, the first magnetic rod is arranged along the radial direction of the driving shaft, and the first magnetic rod passes through the limiting cylinder; the second magnetic rod is arranged along the radial direction of the driving shaft; the clamping block is arranged on the peripheral wall surface of the adjusting ring, which is close to one side of the central axis of the driving shaft, the adjusting ring is provided with a mounting groove, the clamping block can be telescopically arranged in the mounting groove along the radial direction of the adjusting ring, when the rotating speed of the driving shaft is in the rated speed, the clamping block is retracted into the mounting groove, the driving shaft is provided with a clamping groove, the clamping block can be clamped in the clamping groove, the adjusting ring is connected with the driving shaft through a torsion spring, and the torsion spring always has a trend of promoting the clamping block to rotate in the direction away from the clamping groove.
4. A fall arrest device for an elevator as defined in claim 3, wherein: still include the reset lever, the driving shaft includes first axle section and second axle section, and first axle section is solid section, and the second axle section is hollow section, first axle section and second axle section rigid coupling, and integrated into one piece structure, the draw-in groove is seted up on the second axle section, and the reset lever can insert in the second axle section.
5. An elevator fall arrest device as defined in claim 1, wherein: the reinforcement assembly comprises a deformation belt, the deformation belt is of a plane spiral structure, the deformation belt can be gradually wound in the downward process of the suspension cage, a plurality of third elastic pieces are arranged in the circumferential direction of the deformation belt, each third elastic piece is arranged corresponding to one friction plate, and the deformation belt is connected with the friction plate.
6. The elevator fall arrest device as defined in claim 5, wherein: still include the reducing gear assembly, the reducing gear assembly includes first gear, the second gear, third gear and fourth gear, first gear is fixed to be set up on the driving shaft, and the diameter of first gear is less than the diameter of driving gear, the second gear rotates and installs in the shell, second gear and first gear engagement, the third gear is installed in the shell, third gear and the coaxial setting of second gear, and synchronous rotation, fourth gear rotates and installs on the driving shaft, and fourth gear and third gear engagement, the diameter of fourth gear is greater than the diameter of third gear, fixedly connected with synchronous rotary drum on the fourth gear, synchronous rotary drum and the coaxial setting of fourth gear just rotate and install on the driving shaft, the one end fixed connection of deformation area is on synchronous rotary drum, the other end and the shell inner wall face rigid coupling of deformation area.
7. An elevator fall arrest device as defined in claim 1, wherein: the trigger bars are arranged in four.
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| CN202410080122.XA CN117585558B (en) | 2024-01-19 | 2024-01-19 | Anti-falling device of lifter |
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| CN117842871A (en) * | 2024-03-07 | 2024-04-09 | 豫兴建筑工程有限公司新乡分公司 | Anti-falling hoisting machine for building materials |
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| CN200974727Y (en) * | 2006-07-05 | 2007-11-14 | 广州市京龙工程机械有限公司 | Falling-proof tripper for construction elevator |
| CN111792488A (en) * | 2019-04-08 | 2020-10-20 | 湖南零陵恒远发电设备有限公司 | Elevator speed limiting device |
| CN211820469U (en) * | 2019-10-09 | 2020-10-30 | 辽宁壮龙无人机科技有限公司 | Gear assembly and transmission |
| CN112314198A (en) * | 2020-11-11 | 2021-02-05 | 厦门枫熙恋市政工程有限公司 | Straw rubbing crusher feed control mechanism is used in straw board processing |
| CN212481972U (en) * | 2020-06-24 | 2021-02-05 | 常州吉尔精密机械制造有限公司 | Blow-drying device applicable to spinneret plates in various shapes |
| CN217257258U (en) * | 2022-03-08 | 2022-08-23 | 王建平 | Bridge construction is with pouring equipment |
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2024
- 2024-01-19 CN CN202410080122.XA patent/CN117585558B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200974727Y (en) * | 2006-07-05 | 2007-11-14 | 广州市京龙工程机械有限公司 | Falling-proof tripper for construction elevator |
| CN111792488A (en) * | 2019-04-08 | 2020-10-20 | 湖南零陵恒远发电设备有限公司 | Elevator speed limiting device |
| CN211820469U (en) * | 2019-10-09 | 2020-10-30 | 辽宁壮龙无人机科技有限公司 | Gear assembly and transmission |
| CN212481972U (en) * | 2020-06-24 | 2021-02-05 | 常州吉尔精密机械制造有限公司 | Blow-drying device applicable to spinneret plates in various shapes |
| CN112314198A (en) * | 2020-11-11 | 2021-02-05 | 厦门枫熙恋市政工程有限公司 | Straw rubbing crusher feed control mechanism is used in straw board processing |
| CN217257258U (en) * | 2022-03-08 | 2022-08-23 | 王建平 | Bridge construction is with pouring equipment |
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