CN111377329A - Centrifugal trigger mechanism for high-speed elevator speed limiter - Google Patents
Centrifugal trigger mechanism for high-speed elevator speed limiter Download PDFInfo
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- CN111377329A CN111377329A CN201811630989.9A CN201811630989A CN111377329A CN 111377329 A CN111377329 A CN 111377329A CN 201811630989 A CN201811630989 A CN 201811630989A CN 111377329 A CN111377329 A CN 111377329A
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- centrifugal
- mass block
- trigger
- speed
- centrifugal mass
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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
- B66B5/044—Mechanical overspeed governors
Abstract
The invention relates to a centrifugal trigger mechanism for a speed limiter of a high-speed elevator, which comprises a rope pulley and centrifugal trigger assemblies arranged on the rope pulley, wherein two groups of centrifugal trigger assemblies are arranged and symmetrically arranged on two sides of the rope pulley, each centrifugal trigger assembly comprises a centrifugal spring, a connecting rod, a first centrifugal mass block and a second centrifugal mass block, one end of each first centrifugal mass block and one end of each second centrifugal mass block are arranged on the rope pulley, the first centrifugal mass blocks and the second centrifugal mass blocks are connected through the connecting rods, one end of each centrifugal spring is connected to the first centrifugal mass blocks or the second centrifugal mass blocks, the other end of each centrifugal spring is connected to the rope pulley, and the first centrifugal mass blocks and the second centrifugal mass blocks rotate at a high speed along with the rope pulley. Compared with the prior art, the centrifugal trigger assemblies are symmetrically arranged on two sides of the rope wheel, the electric appliance action trigger and the mechanical action trigger to realize separation, a certain control priority level is set, and the stability and the reliability of the control speed are greatly improved.
Description
Technical Field
The invention relates to an elevator part, in particular to a centrifugal trigger mechanism for a high-speed elevator speed limiter.
Background
An elevator speed limiter is one of safety control components in an elevator safety protection system. The elevator speed monitoring and controlling device can monitor and control the speed of the elevator car at any time, and when the elevator exceeds the speed of 115% of the rated speed of the elevator due to any reason during operation, even when the elevator runs into a falling danger, a switching value signal can be sent out in time, a power supply circuit is cut off, and the traction machine is braked. If the elevator still can not be braked and the speed continues to increase, the speed limiter can drive mechanical braking to forcibly brake the car, so that casualties and equipment damage accidents are avoided.
The existing elevator speed limiter comprises a rope wheel, a safety rope is arranged on the rope wheel, one end of the safety rope is fixed on a car body of the elevator, the other end of the safety rope is fixed on the car body of the elevator through the rope wheel and a tensioning wheel respectively, and the safety rope at the end is also connected with a safety tongs of the elevator. When the elevator runs within the normal speed range, the safety rope circulates between the rope pulley and the tension pulley, the running of the elevator cannot be influenced, and once the elevator runs at an overspeed, the safety rope can pull the safety tongs, so that the safety tongs clamp the guide rail of the elevator, and the elevator is forcibly braked. The existing elevator speed limiter adopts mechanical braking, the damage of a steel wire rope to a rope wheel (wheel groove) is large, the requirements on the precision and the strength of each part in the speed limiter are high, and the cost is large. In addition, the braking through the safety tongs is just an inexhaustible matter, and the braking tongs cannot be opened easily. Therefore, on the one hand, the operating speed of the elevator is controlled so as not to run at overspeed, and on the other hand, frequent opening of the safety gear is prevented, which puts new demands on the elevator speed limiter. The existing speed limiter has low sensitivity and stability to braking and unreliable braking, so the speed limiter needs to be redesigned.
Centrifugal trigger mechanisms are important parts of governors. The existing speed limiter is provided with a rope pulley and a centrifugal block, when the elevator runs, the rope pulley is driven by a steel wire rope to rotate, the rope pulley drives the centrifugal block to rotate, if the rotating speed is overlarge, the centrifugal block is separated outwards along the radial direction, when the centrifugal block reaches the maximum centrifugal position, the speed limit switch on the speed limiter is triggered, but only one trigger signal is generated when the trigger is triggered, if two trigger signals need to be generated, the prior art is, the speed limiter is provided with two speed limit switches which are separated by a certain distance, but in the prior structure, the phenomenon of simultaneous triggering or wrong triggering sequence can be generated when the positions of the two speed limit switches are slightly incorrect, meanwhile, when the speed limiter of the prior structure is reversed, two limit switches can be triggered to cause the elevator ascending and descending overspeed safety device to act simultaneously, the deceleration of the elevator stopping can be caused to be too large, and the elevator stopping does not meet the mandatory safety requirement of the national standard.
Disclosure of Invention
The invention aims to solve the problems and provide a centrifugal trigger mechanism for a speed limiter of a high-speed elevator.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a centrifugal trigger mechanism for high-speed elevator speed limiter, includes the rope sheave and installs the centrifugal trigger subassembly on the rope sheave, centrifugal trigger subassembly is equipped with two sets ofly, and the symmetry is located the both sides of rope sheave, centrifugal trigger subassembly includes centrifugal spring, connecting rod, first centrifugal mass piece and the centrifugal quality piece of second, the one end of first centrifugal mass piece and the centrifugal quality piece of second is installed on the rope sheave, connects through the connecting rod between first centrifugal mass piece and the centrifugal quality piece of second, centrifugal spring one end is connected on first centrifugal mass piece or the centrifugal quality piece of second, and the other end is connected on the rope sheave, first centrifugal mass piece and the centrifugal quality piece of second take place centrifugal motion when rotating at a high speed along with the rope sheave.
Furthermore, the centrifugal trigger assembly on one side of the rope wheel is connected with the electrical control, the centrifugal trigger assembly on the other side of the rope wheel is connected with the mechanical control, and the force value of the centrifugal spring connected with the electrical control is smaller than that of the centrifugal spring connected with the mechanical control.
Furthermore, the first centrifugal mass block and the second centrifugal mass block are identical in shape and are semicircular blocks provided with rectangular segmental blocks, and the first centrifugal mass block and the second centrifugal mass block form an unsealed circular structure.
Further, first centrifugal mass piece and second centrifugal mass piece include centrifugal trigger portion and fixed mounting portion, centrifugal trigger portion outside is equipped with a plurality of archs that trigger, fixed mounting portion is articulated with the rope sheave through the installation axle.
Further, the centrifugal trigger part is externally in the shape of a gear.
Furthermore, one end of the centrifugal spring is connected to the end of the centrifugal trigger part of the first centrifugal mass block, and the other end of the centrifugal spring is connected to the rope wheel. Connecting rod one end is connected in the handing-over department of the centrifugal trigger portion of first centrifugal mass piece and fixed mounting portion, and the other end is connected in the tip of the fixed mounting portion of second centrifugal mass piece.
Further, the rope sheave includes the rope sheave body, the circumference of rope sheave body is equipped with the rope sheave groove that is used for installing wire rope, the rope sheave passes through the bearing spare and locates on the casing.
The specific working principle of the invention is that the steel wire rope passes through the rope pulley of the speed limiter, when the running speed of the elevator car is too high, the rope pulley of the speed limiter rotates at a high speed, once the running speed of the elevator car exceeds the rated speed, the centrifugal trigger assembly arranged on the rope pulley is thrown away by the rope pulley rotating at the high speed, the centrifugal mass block breaks away from the traction force of the centrifugal spring and moves outwards, and the centrifugal mass block sequentially touches the electric control mechanism and the mechanical braking mechanism to carry out electric braking and mechanical braking in a grading way. The two centrifugal trigger assemblies have a certain priority level, firstly, the electric control mechanism acts, when the speed is too high, the centrifugal trigger assemblies touch the electric control mechanism to disconnect the electric switch, the traction machine is powered off, and power is not provided any more; if the speed is increased (if the elevator falls), the centrifugal trigger assembly touches the mechanical control mechanism to enable the rope clamping unit to clamp the steel wire rope and lift the safety gear, so that the elevator car is braked and stopped on the guide rail, and the elevator is effectively protected.
The invention has the following specific advantages:
1. the centrifugal trigger components are symmetrically arranged on two sides of the rope wheel, the electric appliance action trigger and the mechanical action trigger are separated, and a certain control priority level is set, so that the stability and the reliability of the control speed are greatly improved;
2. the centrifugal trigger mechanism is provided with two centrifugal mass blocks, the centrifugal mass blocks are semicircular blocks provided with rectangular lacking blocks, the two centrifugal mass blocks form an open circular structure, the structure improves the sensitivity of centrifugal trigger, once the speed is too high, the structure formed by the centrifugal mass blocks is similar to the circular structure and expands outwards, and a rod piece is touched in time to brake.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a centrifugal mass of the present invention;
fig. 3 and 4 are schematic diagrams of specific applications of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1, a centrifugal trigger mechanism for speed limiter of high-speed elevator, including rope sheave 1 and the centrifugal trigger subassembly of installing on rope sheave 1, centrifugal trigger subassembly is equipped with two sets ofly, the symmetry is located the both sides of rope sheave 1, centrifugal trigger subassembly includes centrifugal spring 5, connecting rod 4, first centrifugal mass block 2 and second centrifugal mass block 3, the one end of first centrifugal mass block 2 and second centrifugal mass block 3 is installed on rope sheave 1, connect through connecting rod 4 between first centrifugal mass block 2 and the second centrifugal mass block 3, centrifugal spring 5 one end is connected on first centrifugal mass block 2 or second centrifugal mass block 3, the other end is connected on rope sheave 1, first centrifugal mass block 2 and second centrifugal mass block 3 take place centrifugal motion when rotating at a high speed along with rope sheave 1.
The first centrifugal mass block 2 and the second centrifugal mass block 3 have the same shape, and are semicircular blocks provided with rectangular segmental blocks as shown in fig. 2, and the first centrifugal mass block 2 and the second centrifugal mass block 3 form an unsealed circular structure. First centrifugal mass block 2 and second centrifugal mass block 3 include centrifugal trigger portion 8 and fixed mounting portion 6, and 8 outsides in centrifugal trigger portion are equipped with a plurality of trigger archs 7, and fixed mounting portion 6 is articulated with rope sheave 1 through the installation axle, and 8 outsides in centrifugal trigger portion are the gear shape. The centrifugal spring 5 has one end connected to the end of the centrifugal trigger 8 of the first centrifugal mass 2 and the other end connected to the sheave 1. One end of the connecting rod 4 is connected to the junction of the centrifugal trigger part 8 of the first centrifugal mass block 2 and the fixed mounting part 6, and the other end is connected to the end part of the fixed mounting part 6 of the second centrifugal mass block 3. Rope sheave 1 includes the rope sheave body, and the circumference of rope sheave body is equipped with the rope sheave groove that is used for installing wire rope, and rope sheave 1 passes through the bearing piece to be located on the casing.
As shown in fig. 3 and 4, the centrifugal trigger assembly on one side of the rope pulley 1 is connected with the electric control, the centrifugal trigger assembly on the other side of the rope pulley is connected with the mechanical control, and the force value of the centrifugal spring 5 connected with the electric control is smaller than that of the side connected with the mechanical control. The specific working principle is that a steel wire rope penetrates through a rope wheel of the speed limiter, when the running speed of an elevator car is too high, the speed limiter rope wheel rotates at a high speed, once the running speed of the elevator car exceeds the rated speed, a centrifugal trigger assembly arranged on the rope wheel is thrown away by the rope wheel rotating at the high speed, a centrifugal mass block breaks away from the traction force of a centrifugal spring to move outwards, an electric control mechanism and a mechanical braking mechanism are touched successively, and electric braking and mechanical braking are carried out in a grading mode. The two centrifugal trigger assemblies have a certain priority level, firstly, the electric control mechanism acts, when the speed is too high, the centrifugal trigger assemblies touch the electric control mechanism to disconnect the electric switch, the traction machine is powered off, and power is not provided any more; if the speed is increased (if the elevator falls), the centrifugal trigger assembly touches the mechanical control mechanism to enable the rope clamping unit to clamp the steel wire rope and lift the safety gear, so that the elevator car is braked and stopped on the guide rail, and the elevator is effectively protected.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (7)
1. A centrifugal trigger mechanism for a speed limiter of a high-speed elevator comprises a rope wheel (1) and a centrifugal trigger component arranged on the rope wheel (1), it is characterized in that the centrifugal trigger components are provided with two groups which are symmetrically arranged at the two sides of the rope wheel (1), the centrifugal trigger component comprises a centrifugal spring (5), a connecting rod (4), a first centrifugal mass block (2) and a second centrifugal mass block (3), one end of the first centrifugal mass block (2) and one end of the second centrifugal mass block (3) are arranged on the rope wheel (1), the first centrifugal mass block (2) and the second centrifugal mass block (3) are connected through a connecting rod (4), one end of the centrifugal spring (5) is connected to the first centrifugal mass block (2) or the second centrifugal mass block (3), the other end is connected to the rope wheel (1), the first centrifugal mass block (2) and the second centrifugal mass block (3) rotate at high speed along with the rope wheel (1) and then generate centrifugal motion.
2. The centrifugal trigger mechanism for the speed limiter of the high-speed elevator is characterized in that the centrifugal trigger component on one side of the rope wheel (1) is connected with an electrical control, the centrifugal trigger component on the other side of the rope wheel is connected with a mechanical control, and the force value of a centrifugal spring (5) connected with the electrical control is smaller than that of the side connected with the mechanical control.
3. The centrifugal trigger mechanism for the speed limiter of the high-speed elevator is characterized in that the first centrifugal mass block (2) and the second centrifugal mass block (3) are identical in shape and are semicircular blocks provided with rectangular segmental blocks, and the first centrifugal mass block (2) and the second centrifugal mass block (3) form an unclosed circular structure.
4. The centrifugal trigger mechanism for the speed limiter of the high-speed elevator is characterized in that the first centrifugal mass block (2) and the second centrifugal mass block (3) comprise a centrifugal trigger part (8) and a fixed mounting part (6), a plurality of trigger protrusions (7) are arranged outside the centrifugal trigger part (8), and the fixed mounting part (6) is hinged with the rope pulley (1) through a mounting shaft.
5. The centrifugal trigger mechanism for the speed limiter of the high-speed elevator is characterized in that the centrifugal trigger part (8) is externally in the shape of a gear.
6. The centrifugal trigger mechanism for the governor of the high-speed elevator according to claim 4, wherein one end of the centrifugal spring (5) is connected to the end of the centrifugal trigger part (8) of the first centrifugal mass (2), and the other end is connected to the sheave (1). One end of the connecting rod (4) is connected to the junction of the centrifugal trigger part (8) of the first centrifugal mass block (2) and the fixed mounting part (6), and the other end of the connecting rod is connected to the end part of the fixed mounting part (6) of the second centrifugal mass block (3).
7. The centrifugal trigger mechanism for the speed limiter of the high-speed elevator is characterized in that the rope wheel (1) comprises a rope wheel body, the circumference of the rope wheel body is provided with a rope wheel groove for installing a steel wire rope, and the rope wheel (1) is arranged on the machine shell through a bearing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630989.9A CN111377329A (en) | 2018-12-29 | 2018-12-29 | Centrifugal trigger mechanism for high-speed elevator speed limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630989.9A CN111377329A (en) | 2018-12-29 | 2018-12-29 | Centrifugal trigger mechanism for high-speed elevator speed limiter |
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| Publication Number | Publication Date |
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| CN111377329A true CN111377329A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811630989.9A Pending CN111377329A (en) | 2018-12-29 | 2018-12-29 | Centrifugal trigger mechanism for high-speed elevator speed limiter |
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| CN (1) | CN111377329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11192753B2 (en) * | 2017-12-28 | 2021-12-07 | Otis Elevator Company | Remote triggering device, governor assembly and elevator |
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2018
- 2018-12-29 CN CN201811630989.9A patent/CN111377329A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11192753B2 (en) * | 2017-12-28 | 2021-12-07 | Otis Elevator Company | Remote triggering device, governor assembly and elevator |
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