CN111377331A - Electric braking mechanism of speed limiter for high-speed elevator - Google Patents
Electric braking mechanism of speed limiter for high-speed elevator Download PDFInfo
- Publication number
- CN111377331A CN111377331A CN201811633716.XA CN201811633716A CN111377331A CN 111377331 A CN111377331 A CN 111377331A CN 201811633716 A CN201811633716 A CN 201811633716A CN 111377331 A CN111377331 A CN 111377331A
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- China
- Prior art keywords
- electric
- centrifugal
- trigger
- mass block
- speed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
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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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
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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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
- F16D2043/145—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting
Abstract
The invention relates to an electric braking mechanism of a speed limiter for a high-speed elevator, which comprises a centrifugal trigger assembly and an electric control connecting rod assembly, wherein the centrifugal trigger assembly is arranged on a speed limiter rope wheel, the electric control connecting rod assembly comprises an electric appliance trigger rod and an electric switch touch rod, the electric appliance trigger rod is hinged on a shell of the speed limiter through a first hinge joint, the upper end of the electric appliance trigger rod is contacted with the centrifugal trigger assembly, the lower end of the electric appliance trigger rod is pressed at one end of the electric switch touch rod, an electric switch is arranged at the upper part of one end of the electric switch touch rod, the electric switch touch rod is hinged on the shell through a second hinge joint, and the second hinge joint divides the electric switch touch rod into two parts, namely a long end and a. Compared with the prior art, the electric appliance control mechanism adopts the lever principle, and has reliable action and higher sensitivity.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an electric braking mechanism of a speed limiter for a high-speed elevator.
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. The electric braking mechanism is an important part of the speed limiter, and the existing braking mechanism has the advantages of complex structure, high manufacturing cost, insensitive braking and difficult resetting after braking.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric brake mechanism of a speed governor for a high-speed elevator.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an electric brake mechanism of overspeed governor for high-speed elevator, is including setting up in the centrifugal trigger subassembly and the electrical control link assembly of overspeed governor rope sheave, electrical control link assembly includes electrical apparatus trigger lever and electrical switch touch pole, the electrical apparatus trigger lever articulates on the casing of overspeed governor through first pin joint, electrical apparatus trigger lever upper end with the contact of centrifugal trigger subassembly, the lower extreme is pressed in electrical switch touch pole one end to upper portion at electrical switch touch pole one end sets up electrical switch, electrical switch touch pole articulates on the casing through the second pin joint, and the second pin joint falls into the short two parts of one end length one end with electrical switch touch pole, and is close to the one end of electrical switch shorter.
Furthermore, the electric switch touch rod is a strip-shaped rod piece, and the upper part of the electric switch touch rod is provided with a convex block matched with the electric switch.
Furthermore, the electrical apparatus trigger lever is Y type, and its lower extreme joint is in electrical switch touching pole top.
Further, the centrifugation trigger assembly includes centrifugal spring, connecting rod, first centrifugal mass piece and second centrifugal mass piece, the one end of first centrifugal mass piece and second centrifugal mass piece is installed on the rope sheave, connects through the connecting rod between first centrifugal mass piece and the second centrifugal mass piece, centrifugal spring one end is connected on first centrifugal mass piece or second centrifugal mass piece, and the other end is connected on the rope sheave.
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.
The specific principle of the invention is that an electrical switch touch rod of an electrical control connecting rod assembly forms a lever structure with a long end and a short end at a hinge joint, an electrical switch is arranged at the upper part of one end of the electrical switch touch rod, which is in contact with an electrical appliance trigger rod, when the electrical appliance trigger rod is triggered by a centrifugal trigger mechanism, the lower end of the electrical appliance trigger rod is pressed at one end of the electrical switch touch rod to be tilted upwards, and the electrical switch touch rod is tilted upwards under the lever action to touch the electrical switch, so that the electrical switch is disconnected, a traction machine is powered off, and no power is provided any more.
Compared with the prior art, the invention has the following specific advantages:
1. the electric appliance control mechanism adopts a lever principle, and has reliable action and higher sensitivity;
2. the support plate can be reset through leakage, so that the convenience and the safety are realized, and the personal injury is prevented;
3. 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 diagram 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, an electric braking mechanism of speed limiter for high-speed elevator, including setting up in centrifugal trigger assembly and the electric control link assembly of speed limiter rope sheave 1, electric control link assembly includes electrical apparatus trigger bar 6 and electric switch touch pole 7, electrical apparatus trigger bar 6 articulates on the casing of speed limiter through first pin joint 9, electrical apparatus trigger bar 6 upper end and centrifugal trigger assembly contact, the lower extreme is pressed in electric switch touch pole 7 one end, and set up electric switch 8 on the upper portion of electric switch touch pole 7 one end, electric switch touch pole 7 articulates on the casing through second pin joint 10, second pin joint 10 falls into one end length one end short two parts with electric switch touch pole 7, and the one end that is close to electric switch 8 is shorter. The electric switch touch rod 7 is a long bar-shaped rod, and the upper part of the electric switch touch rod is provided with a convex block 11 matched with the electric switch 8. The electric appliance trigger rod 6 is Y-shaped, and the lower end of the electric appliance trigger rod is clamped above the electric switch touch rod 7.
The centrifugal trigger assembly comprises a centrifugal spring 5, a connecting rod 4, a first centrifugal mass block 2 and a second centrifugal mass block 3, one ends of the first centrifugal mass block 2 and the second centrifugal mass block 3 are installed on the rope wheel 1, the first centrifugal mass block 2 and the second centrifugal mass block 3 are connected through the 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, and the other end of the centrifugal spring is connected to the rope wheel 1. 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 unsealed circular structure. First centrifugal mass block 2 and second centrifugal mass block 3 include centrifugal trigger portion and fixed mounting portion, and centrifugal trigger portion outside is equipped with a plurality of trigger archs, and fixed mounting portion is articulated with rope sheave 1 through the installation axle. The centrifugal trigger part is externally in a gear shape.
When the electric control connecting rod assembly works, the electric switch touch rod 7 of the electric control connecting rod assembly forms a lever structure with one long end and one short end at a hinge joint 10, the electric switch touch rod is provided with an electric switch 8 on the upper part of one end contacted with the electric appliance trigger rod, when the electric appliance trigger rod is triggered by the centrifugal trigger mechanism, the lower end of the electric appliance trigger rod is pressed on one end of the electric switch touch rod to upwarp, the electric switch touch rod upwarps due to the lever action and touches the electric switch, so that the electric switch is disconnected, the power of a tractor is cut off, and the power is not provided any more.
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. An electric braking mechanism of a speed limiter for a high-speed elevator comprises a centrifugal trigger component and an electric control connecting rod component which are arranged on a speed limiter rope wheel (1), it is characterized in that the electric control connecting rod component comprises an electric appliance trigger rod (6) and an electric switch touch rod (7), the electric appliance trigger lever (6) is hinged on the shell of the speed limiter through a first hinge point (9), the upper end of the electric appliance trigger rod (6) is contacted with the centrifugal trigger component, the lower end is pressed at one end of the electric switch touch rod (7), an electric switch (8) is arranged on the upper part of one end of the electric switch touch rod (7), electric switch touch pole (7) articulate on the casing through second pin joint (10), and second pin joint (10) divide into one end length one end short two parts with electric switch touch pole (7), and the one end that is close to electric switch (8) is shorter.
2. An electric brake mechanism of a speed limiter for high-speed elevator according to claim 1, characterized in that the electric switch touch lever (7) is a bar-shaped lever member, and a projection (11) engaged with the electric switch (8) is provided on the upper portion.
3. An electric brake mechanism of a speed limiter for high-speed elevator according to claim 1, characterized in that the electric trigger lever (6) is Y-shaped, and its lower end is clipped above the electric switch touch lever (7).
4. The electric braking mechanism of the speed limiter for the high-speed elevator is characterized in that the centrifugal trigger assembly 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 installed on the rope pulley (1), the first centrifugal mass block (2) and the second centrifugal mass block (3) are connected through the 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), and the other end of the centrifugal spring is connected to the rope pulley (1).
5. The electric brake mechanism of the speed limiter for 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 blocks, and the first centrifugal mass block (2) and the second centrifugal mass block (3) form an unclosed circular structure.
6. The electric brake mechanism of the speed limiter for 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 and a fixed mounting part, a plurality of trigger bulges are arranged outside the centrifugal trigger part, and the fixed mounting part is hinged with the rope wheel (1) through a mounting shaft.
7. The electric brake mechanism of the speed governor for high-speed elevators according to claim 6, wherein the centrifugal trigger portion is externally shaped like a gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633716.XA CN111377331A (en) | 2018-12-29 | 2018-12-29 | Electric braking mechanism of speed limiter for high-speed elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633716.XA CN111377331A (en) | 2018-12-29 | 2018-12-29 | Electric braking mechanism of speed limiter for high-speed elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111377331A true CN111377331A (en) | 2020-07-07 |
Family
ID=71214741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811633716.XA Pending CN111377331A (en) | 2018-12-29 | 2018-12-29 | Electric braking mechanism of speed limiter for high-speed elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111377331A (en) |
-
2018
- 2018-12-29 CN CN201811633716.XA patent/CN111377331A/en active Pending
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