CN111377335A - Mechanical braking mechanism of speed limiter for high-speed elevator - Google Patents
Mechanical braking mechanism of speed limiter for high-speed elevator Download PDFInfo
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- CN111377335A CN111377335A CN201811630909.XA CN201811630909A CN111377335A CN 111377335 A CN111377335 A CN 111377335A CN 201811630909 A CN201811630909 A CN 201811630909A CN 111377335 A CN111377335 A CN 111377335A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 3
- 235000011613 Pinus brutia Nutrition 0.000 claims description 3
- 241000018646 Pinus brutia Species 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 230000006378 damage Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 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
- B66B5/185—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 by acting on main ropes or main cables
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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
- B66B5/24—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 by acting on guide ropes or cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to a mechanical braking mechanism of a speed limiter for a high-speed elevator, which comprises a mechanical trigger rod, a rope clamping connecting rod, a rope clamping unit hinged with the lower end of the rope clamping connecting rod and a lifting unit hinged with the upper end of the rope clamping connecting rod, wherein the mechanical trigger rod is hinged on a supporting plate of the speed limiter through a hinged point, one end of the mechanical trigger rod is contacted with a centrifugal trigger mechanism of the speed limiter, the other end of the mechanical trigger rod is propped against the rope clamping connecting rod, the mechanical trigger rod is loosened from the rope clamping connecting rod under the trigger of the centrifugal trigger mechanism, and the rope clamping unit clamps a steel wire rope under the action of the lifting unit. Compared with the prior art, the invention brakes by utilizing the lever principle of the rope clamping connecting rod, and has reliable action and higher sensitivity; the rope clamping unit directly clamps the steel wire rope, avoids the damage of the steel wire rope to the rope wheel when the speed limiter brakes, and is beneficial to prolonging the service life.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a mechanical 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 mechanical braking mechanism is an important part of the speed limiter, the existing mechanical braking mechanism is complex in structure and high in manufacturing cost, a steel wire rope is easy to damage a rope wheel (wheel groove) during braking of the speed limiter, the abrasion is serious, the braking is not sensitive, and the speed limiter is not easy to reset 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 a mechanical 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 a mechanical brake mechanism of overspeed governor for high-speed elevator, includes mechanical trigger lever, presss from both sides the rope connecting rod, with press from both sides rope unit and with press from both sides rope connecting rod upper end articulated pulling unit of pressing from both sides rope connecting rod lower extreme articulated, mechanical trigger lever articulates in the backup pad of overspeed governor through the pin joint, and the one end of mechanical trigger lever contacts with the centrifugal trigger mechanism of overspeed governor, and the other end supports on pressing from both sides the rope connecting rod, mechanical trigger lever under centrifugal trigger mechanism's triggering, with press from both sides rope connecting rod pine and take off, press from both sides the tight wire rope of clamp rope unit under the effect of pulling unit.
Further, the rope clamping unit comprises a rope clamping fixed block and a rope clamping movable block, the rope clamping fixed block is fixedly arranged on a bottom plate of the speed limiter, and the rope clamping movable block is fixedly arranged at the lower end of the rope clamping connecting rod.
Further, the rope clamping fixed block and the rope clamping movable block are respectively provided with brake shoes on the opposite contact surfaces.
Furthermore, the lower end of the rope clamping connecting rod is hinged to a bottom plate of the speed limiter through a double-lug connecting plate.
Further, the lifting unit comprises a trigger connecting rod and a force value spring power assembly connected with the trigger connecting rod, and the upper end of the rope clamping connecting rod is hinged to the tail end of the trigger connecting rod.
Further, supporting plate and adjusting nut behind supporting plate, the spring before power value spring power component includes power value spring, spring guiding axle, spring, power value spring housing is established on the spring guiding axle, install respectively between the supporting plate behind supporting plate and the spring before the spring at the both ends of spring guiding axle, adjusting nut locates the rear portion of supporting plate behind the spring.
Furthermore, the force value spring and the spring guide shaft are provided with 2-3 groups.
Furthermore, be equipped with the contact lug on pressing from both sides the rope connecting rod, the end and the contact lug joint of mechanical trigger lever.
Furthermore, the contact bump is arranged at the lower position in the middle of the rope clamping connecting rod.
Furthermore, the mechanical trigger rod is an L-shaped workpiece, and the hinge point is located at a right angle of the L-shaped workpiece.
The specific working principle of the invention is that a steel wire rope passes through a rope wheel of the speed limiter, when the running speed of an elevator car is too high, the rope wheel of the speed limiter rotates at a high speed, once the running speed of the elevator car exceeds the rated speed, a centrifugal trigger mechanism arranged on the rope wheel triggers one end of a mechanical trigger rod, the mechanical trigger rod rotates, the other end of the mechanical trigger rod is loosened and separated from a rope clamping connecting rod, and a rope clamping unit clamps the steel wire rope under the action of a lifting unit through the rope clamping connecting rod to complete mechanical braking.
The invention has the following specific advantages:
1. braking is carried out by utilizing the lever principle of the rope clamping connecting rod, so that the action is reliable, and the sensitivity is higher;
2. the rope clamping unit directly clamps the steel wire rope, avoids the damage of the steel wire rope to the rope wheel (wheel groove) when the speed limiter brakes, and is beneficial to prolonging the service life.
3. Mechanical trigger bar is L shape work piece, and the pin joint is located the right angle department of L shape work piece, and resetting means is very convenient when reseing, increases convenience and security, prevents to cause bodily injury.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a top view of the pulling unit.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1 and 2, a mechanical braking mechanism of speed limiter for high-speed elevator, including mechanical trigger lever 1, press from both sides rope connecting rod 2, press from both sides rope unit and press from both sides rope connecting rod 2 upper end articulated with pressing from both sides rope unit of 2 lower extremes of rope connecting rod, mechanical trigger lever 1 articulates in the backup pad of speed limiter through the pin joint, the one end of mechanical trigger lever 1 contacts with the centrifugal trigger mechanism of speed limiter, the other end supports on pressing from both sides rope connecting rod 2, mechanical trigger lever 1 is under centrifugal trigger mechanism's triggering, with pressing from both sides rope connecting rod 2 pine and taking off, press from both sides rope unit and press from both sides tight wire rope under the effect of pulling the unit. The mechanical trigger rod 1 is an L-shaped workpiece, and the hinge point is positioned at the right angle of the L-shaped workpiece.
The rope clamping unit comprises a rope clamping fixed block 7 and a rope clamping movable block 4, the rope clamping fixed block 7 is fixedly arranged on a bottom plate of the speed limiter, and the rope clamping movable block 4 is fixedly arranged at the lower end of the rope clamping connecting rod 2. The rope clamping fixed block 7 and the rope clamping movable block 4 are respectively provided with brake shoes 6 on the opposite contact surfaces. The lower end of the rope clamping connecting rod 2 is hinged on the bottom plate of the speed limiter through a double-lug connecting plate 5.
As shown in fig. 3, the lifting unit comprises a trigger connecting rod 8 and a force value spring power assembly connected with the trigger connecting rod 8, and the upper end of the rope clamping connecting rod 2 is hinged with the tail end of the trigger connecting rod 8. The force value spring power assembly comprises a force value spring 11, a spring guide shaft 9, a front spring support plate 10, a rear spring support plate 12 and an adjusting nut 13, the force value spring 11 is sleeved on the spring guide shaft 9, two ends of the spring guide shaft 9 are respectively installed between the front spring support plate 10 and the rear spring support plate 12, and the adjusting nut 13 is arranged at the rear part of the rear spring support plate 12. The force value spring 11 and the spring guide shaft 9 are provided with 2 groups. Be equipped with contact lug 3 on pressing from both sides rope connecting rod 2, the terminal and the contact lug 3 joint of mechanical trigger lever 1. The contact convex block 3 is arranged at the lower position in the middle of the rope clamping connecting rod 2.
When the elevator car runs at an excessively high speed, the speed governor rope wheel rotates at a high speed, once the speed of the elevator car exceeds a rated speed, the centrifugal trigger mechanism arranged on the rope wheel triggers one end of the mechanical trigger rod, the mechanical trigger rod rotates, the other end of the mechanical trigger rod is separated from the rope clamping connecting rod in a loosening mode, the rope clamping unit clamps the steel wire rope under the action of the lifting unit through the rope clamping connecting rod, and mechanical braking is completed.
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 (10)
1. The utility model provides a mechanical brake mechanism of overspeed governor for high-speed elevator, its characterized in that, including mechanical trigger lever (1), press from both sides rope connecting rod (2), with press from both sides rope unit and with press from both sides rope connecting rod (2) upper end articulated lifting unit of pressing from both sides rope connecting rod (2) lower extreme articulated, mechanical trigger lever (1) articulates in the backup pad of overspeed governor through the pin joint, and the one end of mechanical trigger lever (1) contacts with the centrifugal trigger mechanism of overspeed governor, and the other end supports on pressing from both sides rope connecting rod (2), mechanical trigger lever (1) under centrifugal trigger mechanism's the triggering, and press from both sides rope connecting rod (2) pine and take off, press from both sides rope unit and press from both sides tight wire rope under lifting unit's effect.
2. The mechanical braking mechanism of the speed limiter for the high-speed elevator is characterized in that the rope clamping unit comprises a rope clamping fixed block (7) and a rope clamping movable block (4), the rope clamping fixed block (7) is fixedly arranged on a bottom plate of the speed limiter, and the rope clamping movable block (4) is fixedly arranged at the lower end of the rope clamping connecting rod (2).
3. A mechanical brake mechanism of a speed governor for a high-speed elevator according to claim 2, characterized in that the rope holding fixed block (7) and the rope holding movable block (4) are provided with shoes (6) on their opposing contact surfaces, respectively.
4. A mechanical brake mechanism of a speed limiter for a high speed elevator according to claim 2, characterized in that the lower end of the rope clamping connecting rod (2) is hinged to the bottom plate of the speed limiter by a double lug connecting plate (5).
5. The mechanical brake mechanism of the speed limiter for the high-speed elevator is characterized in that the lifting unit comprises a trigger connecting rod (8) and a force value spring power assembly connected with the trigger connecting rod (8), and the upper end of the rope clamping connecting rod (2) is hinged with the tail end of the trigger connecting rod (8).
6. The mechanical brake mechanism of the speed limiter for the high-speed elevator is characterized in that the force value spring power assembly comprises a force value spring (11), a spring guide shaft (9), a front spring support plate (10), a rear spring support plate (12) and an adjusting nut (13), the force value spring (11) is sleeved on the spring guide shaft (9), two ends of the spring guide shaft (9) are respectively installed between the front spring support plate (10) and the rear spring support plate (12), and the adjusting nut (13) is arranged at the rear part of the rear spring support plate (12).
7. A mechanical brake mechanism of a speed limiter for high speed elevator according to claim 6, characterized in that the force spring (11) and the spring guide shaft (9) are provided with 2-3 sets.
8. The mechanical braking mechanism of the speed limiter for the high-speed elevator is characterized in that a contact bump (3) is arranged on the rope clamping connecting rod (2), and the tail end of the mechanical trigger rod (1) is clamped with the contact bump (3).
9. A mechanical brake mechanism of a speed governor for a high speed elevator according to claim 8, characterized in that the contact projection (3) is provided at a lower position in the middle of the rope gripping connecting rod (2).
10. The mechanical brake mechanism of the speed limiter for the high-speed elevator is characterized in that the mechanical trigger rod (1) is an L-shaped workpiece, and a hinge point is positioned at a right angle of the L-shaped workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630909.XA CN111377335A (en) | 2018-12-29 | 2018-12-29 | Mechanical braking mechanism of speed limiter for high-speed elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630909.XA CN111377335A (en) | 2018-12-29 | 2018-12-29 | Mechanical braking mechanism of speed limiter for high-speed elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111377335A true CN111377335A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811630909.XA Pending CN111377335A (en) | 2018-12-29 | 2018-12-29 | Mechanical braking mechanism of speed limiter for high-speed elevator |
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| Country | Link |
|---|---|
| CN (1) | CN111377335A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1350753A1 (en) * | 2002-04-02 | 2003-10-08 | Inventio Ag | Device for engaging the emergency braking device of an elevator car |
| CN102196986A (en) * | 2008-10-24 | 2011-09-21 | 因温特奥股份公司 | Velocity limiter for an elevator |
| DE102012016336A1 (en) * | 2012-08-20 | 2014-02-20 | Bode Components Gmbh | Speed limiter for safety gear of elevator car for elevator system, has limiter wheel, in which rope of elevator system is performed, where locking unit is connected with limiter wheel |
| CN105293247A (en) * | 2015-11-26 | 2016-02-03 | 上海乐天电梯部件有限公司 | Over-speed governor and using method thereof |
| CN209522442U (en) * | 2018-12-29 | 2019-10-22 | 上海龙钰电梯配件有限公司 | A kind of mechanical braking arrangement of express elevator limiter of speed |
-
2018
- 2018-12-29 CN CN201811630909.XA patent/CN111377335A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1350753A1 (en) * | 2002-04-02 | 2003-10-08 | Inventio Ag | Device for engaging the emergency braking device of an elevator car |
| CN102196986A (en) * | 2008-10-24 | 2011-09-21 | 因温特奥股份公司 | Velocity limiter for an elevator |
| DE102012016336A1 (en) * | 2012-08-20 | 2014-02-20 | Bode Components Gmbh | Speed limiter for safety gear of elevator car for elevator system, has limiter wheel, in which rope of elevator system is performed, where locking unit is connected with limiter wheel |
| CN105293247A (en) * | 2015-11-26 | 2016-02-03 | 上海乐天电梯部件有限公司 | Over-speed governor and using method thereof |
| CN209522442U (en) * | 2018-12-29 | 2019-10-22 | 上海龙钰电梯配件有限公司 | A kind of mechanical braking arrangement of express elevator limiter of speed |
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