CN114074873A - Speed limiter and elevator - Google Patents
Speed limiter and elevator Download PDFInfo
- Publication number
- CN114074873A CN114074873A CN202010828062.7A CN202010828062A CN114074873A CN 114074873 A CN114074873 A CN 114074873A CN 202010828062 A CN202010828062 A CN 202010828062A CN 114074873 A CN114074873 A CN 114074873A
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- rope wheel
- brake disc
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- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 238000010009 beating Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001960 triggered 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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to a speed limiter which comprises a rope wheel, wherein centrifugal throwing blocks are symmetrically arranged on the rope wheel, and centrifugal mechanisms corresponding to the centrifugal throwing blocks are symmetrically arranged on the rope wheel; the two centrifugal mechanisms are linked through a connecting rod and are positioned on the first side of the rope wheel, the speed limiter further comprises a brake disc positioned on the second side of the rope wheel and two braking cam assemblies, the brake disc is mounted on a rope wheel shaft, and the two braking cam assemblies are symmetrically distributed on two radial sides of the brake disc and correspond to the centrifugal throwing blocks one by one; the brake cam assembly comprises a brake cam and a lifting rod, and the brake cam is rotatably arranged on the rope pulley; one end of the lifting rod is rotatably arranged on the brake cam, and the other end of the lifting rod is rotatably arranged on the centrifugal throwing block; when the brake disc is overspeed, the centrifugal swing block is linked with the corresponding lifting rod, and the lifting rod is linked with the corresponding brake cam to rotate, so that the brake cam rotates to be in brake fit with the brake disc, and the rotating directions of the two brake cams are opposite. According to the invention, through the braking cooperation of the braking cam and the braking disc, the action of the speed limiter can be continuously captured, and the action accuracy is improved.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to a speed limiter and an elevator.
Background
The speed limiter is an important guarantee for the safe operation of the elevator. When the elevator runs at an overspeed, the speed limiter firstly breaks the electrical control of the elevator, and drives the safety tongs to forcibly brake the car when the speed limiter mechanically acts.
For example, patent document CN107777502A discloses a steady-state low-speed governor, in which two support plates are parallel and spaced apart from each other, and a disc spring bolt is connected to the support plates and a rope pulley shaft is mounted thereon, the rope pulley shaft is rotatably engaged with a rope pulley, and the rope pulley is wound around a steel wire rope; the disc spring bolt is provided with a first brake pad and a second brake pad, a brake disc is clamped between the first brake pad and the second brake pad, and the brake disc is arranged on the rope wheel shaft; two groups of symmetrical centrifugal mechanisms are arranged on the first side surface of the rope wheel, and the two centrifugal mechanisms are linked through a lifting rod; the first side surface of the rope wheel is provided with a force increasing mechanism which is linked with the lifting rod, and the force increasing mechanism can enhance the centrifugal force generated by the centrifugal mechanism through the lifting rod; two symmetrical ratchet wheel trigger assemblies are arranged on the first side surface of the rope wheel and are linked with corresponding centrifugal mechanisms; when the speed is over-speed, the centrifugal force generated by the centrifugal mechanism enables the ratchet wheel trigger component to act, the ratchet wheel trigger component is linked with the brake disc, and friction force is generated between the brake disc and the first brake pad and between the brake disc and the second brake pad to enable the ratchet wheel trigger component and the rope wheel to stop moving.
However, the operation triggering by the ratchet has a certain hysteresis, and the operation of the speed governor cannot be captured in real time.
Disclosure of Invention
Based on the above-mentioned shortcomings and drawbacks of the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems of the prior art, in other words, to provide a solution to one or more of the above-mentioned needs.
In order to achieve the purpose, the invention adopts the following technical scheme:
a speed limiter comprises a base frame, a rope wheel shaft and a rope wheel, wherein the rope wheel is installed on the base frame through the rope wheel shaft, centrifugal throwing blocks are symmetrically arranged on the rope wheel, and centrifugal mechanisms corresponding to the centrifugal throwing blocks are symmetrically arranged on the rope wheel; the speed limiter also comprises a brake disc and two braking cam assemblies, wherein the brake disc is positioned on the second side of the rope wheel, the brake disc is arranged on a rope wheel shaft, and the two braking cam assemblies are symmetrically distributed on two radial sides of the brake disc and correspond to the centrifugal throwing blocks one by one; the brake cam assembly comprises a brake cam and a lifting rod, and the brake cam is rotatably arranged on the rope pulley; one end of the lifting rod is rotatably arranged on the brake cam, and the other end of the lifting rod is rotatably arranged on the centrifugal throwing block; when the brake disc is overspeed, the centrifugal swing block is linked with the corresponding lifting rod, the lifting rod is linked with the corresponding brake cam to rotate, so that the brake cam rotates to be in brake fit with the brake disc, and the rotating directions of the two brake cams are opposite.
Preferably, the peripheral wall of the brake disc is knurled.
Preferably, the contact surface of the brake cam and the brake disc is provided with a limiting bulge.
As a preferred scheme, a switch beating plate is arranged on the brake disc and used for triggering an electric switch of the speed limiter; the brake disc is also provided with a limiting shaft, and correspondingly, the base frame is provided with a limiting movable groove corresponding to the limiting shaft; when the overspeed is detected, the brake disc rotates, the limiting shaft moves to the switch beating plate along the limiting movable groove to trigger the electric switch of the speed limiter, and the limiting shaft is limited at the limiting position of the limiting movable groove.
Preferably, the base frame is provided with a reset mechanism for resetting the limit shaft.
As a preferred scheme, the centrifugal mechanism comprises a centrifugal swing rod and a fulcrum shaft, the fulcrum shaft is mounted on the rope pulley, and the centrifugal swing rod is rotatably mounted on the fulcrum shaft; one end of the centrifugal swing rod is connected with the centrifugal swing block, the two ends of the connecting rod are respectively connected with the two centrifugal swing rods, and the connecting rod is positioned on the same side of the plane where the two fulcrum shafts are positioned.
As a preferred scheme, at least one centrifugal swing rod is correspondingly provided with a centrifugal reset mechanism.
Preferably, the centrifugal swing block is further connected to the end, located on the second side of the rope wheel, of the fulcrum shaft through a connecting plate, and the connecting plate is in rotating fit with the fulcrum shaft.
Preferably, the sheave includes:
the rope wheel inner ring is rotatably arranged on the rope wheel shaft;
the inner diameter of the rope wheel outer ring is matched with the outer diameter of the rope wheel inner ring so as to be sleeved outside the rope wheel inner ring;
the brake assembly comprises a brake pad and a mounting piece, wherein the brake pad is mounted on the inner ring of the rope wheel through the mounting piece, the brake pad is in contact fit with the outer ring of the rope wheel through required positive pressure, and the positive pressure can be adjusted through the mounting piece.
The invention also provides an elevator, which adopts the speed limiter.
Compared with the prior art, the invention has the beneficial effects that:
(1) the speed limiter provided by the invention can continuously capture the action of the speed limiter through the braking cooperation of the braking cam and the braking disc, and the action accuracy is improved.
(2) The speed limiter adopts a traction wheel with a brake assembly capable of presetting a lifting force to brake, and replaces the traditional mode of generating the lifting force by pressing a steel wire rope or clamping the steel wire rope and dragging.
(3) The speed limiter disclosed by the invention has the advantages of wide applicable speed range, realization of low speed and stability.
Drawings
Fig. 1 is a schematic structural view of a speed governor according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a base frame of a speed governor in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of an inner ring of a sheave of a speed governor in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of the outer sheave ring of the governor in embodiment 1 of the present invention;
fig. 5 is a schematic radial sectional view of the outer ring of the sheave of the governor in embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a sheave of a speed governor in embodiment 1 of the present invention;
fig. 7 is a schematic structural view of a brake assembly of a speed governor of embodiment 1 of the present invention;
fig. 8 is a schematic structural view of a second side of a sheave of a speed governor of embodiment 1 of the invention (brake assembly not shown);
fig. 9 is a schematic structural view of a second side of a sheave of a speed governor of embodiment 1 of the invention (showing a brake assembly);
fig. 10 is a schematic structural view of a first side of a sheave of a speed governor in embodiment 1 of the invention;
fig. 11 is a schematic structural view of a second side of a sheave of a speed governor of embodiment 1 of the invention;
fig. 12 is a schematic structural view of a brake disc of a speed governor according to embodiment 1 of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Example 1:
as shown in fig. 1 to 12, the speed governor of the present embodiment includes a base frame 1, a sheave shaft 2, a sheave 3, a centrifugal throw 4, a centrifugal mechanism, a brake cam assembly, a brake disc 9, and an electric switch 10.
As shown in fig. 2, the base frame 1 includes a bottom plate and two side plates extending vertically along two long sides of the bottom plate, and a mounting space of the sheave is formed between the two side plates. The base plate 1 has an inlet 1a and an outlet 1b for the wire ropes, and has a mounting hole for fixedly mounting the base frame at a corresponding position. In addition, the rope wheel shaft 2 is installed between the two side plates in the width direction parallel to the bottom plate and is positioned at the top of the middle position of the two side plates, so that the rope wheel is suspended in the installation space.
As shown in fig. 3-6, the rope pulley 2 of the present embodiment is a split type design, and includes a rope pulley inner ring 21, a rope pulley outer ring 22 and a brake assembly.
Specifically, rope sheave inner circle 21 includes installation department, stake frame portion and outer fringe portion from inside to outside in proper order, and the installation department passes through deep groove ball bearing and installs on rope pulley shaft 2, and stake frame portion includes four spinal branch poles, along the circumference evenly distributed of installation department, and each spinal branch pole extends along the radial outside of rope sheave, and the outer fringe portion is connected with the extension end of each spinal branch pole respectively. The inner part of the rope wheel inner ring 21 is provided with four vacant positions, wherein two vacant positions are opposite to each other and used for accommodating the centrifugal swinging block 4. In addition, the sheave inner 21 is preferably integrally formed.
The inner diameter of the rope pulley outer ring 22 is matched with the outer diameter of the rope pulley inner ring 21 so as to be conveniently sleeved outside the rope pulley inner ring 21;
as shown in fig. 7, the brake assembly includes a brake pad 23 and a mounting member 24, the brake pad 23 is mounted to the sheave inner ring 21 by the mounting member, and the brake pad 23 is in contact engagement with the sheave outer ring 22 at a desired positive pressure to generate a lifting force. Wherein the positive pressure is adjustable by the mounting. Specifically, the brake pads 23 of the brake assembly are arranged in pairs and are respectively positioned on both sides of the sheave outer ring 22 so as to provide a constant positive pressure and thus a constant lifting force. The mounting piece comprises two support seats 24a, a bolt 24b and a nut 24c, the two support seats 24a are fixed at the extending ends of the two support rods on the two sides of the inner ring 21 of the rope wheel through the bolt 24b and the nut 24c, and one sides of the two support seats 24a facing the outer ring of the rope wheel are respectively fixed with the brake pads 23 arranged in pairs, so that the two side walls of the outer ring of the rope wheel are clamped by the brake pads arranged in pairs to provide constant positive pressure. The brake components of the embodiment are provided with two groups, and are symmetrically arranged on two sides of the rope wheel inner ring 21, so that the brake components are uniformly distributed along the circumferential direction of the rope wheel outer ring 22. It should be noted that the number of the brake assemblies is not limited to two sets in this embodiment, and can be freely adjusted according to actual requirements.
In addition, the sheave outer ring 22 and the sheave inner ring 21 of the present embodiment are provided with a dust-proof member. Specifically, as shown in fig. 6, 8 and 9, the dustproof assembly includes dustproof rings 25 respectively installed on two sides of the sheave inner ring and corresponding fixing members 26, the fixing members 26 fix the dustproof rings to the sheave inner ring, and the ring width portions of the dustproof rings 25 extend to be attached to the side wall of the sheave outer ring, so as to achieve the dustproof between the sheave outer ring 22 and the sheave inner ring 21. Wherein, the dust ring 25 has an avoiding hole position 250 of the brake pad.
The dust ring of the present embodiment includes a plurality of ring pieces 25a, for example, the number of the ring pieces of the present embodiment is four, but not limited to four; the four ring pieces are taken as an example for explanation, the four ring pieces are sequentially arranged in a surrounding mode to form an annular structure, and the avoidance hole position is located at the corresponding connection position of the adjacent ring pieces. Any side of rope sheave inner circle of this embodiment corresponds has two mounting 26, and in addition, brake assembly has two sets ofly, and its support 24a is corresponding also has two, utilizes two mountings 26 and two supports 24a to fix spacingly four adjacent positions of four rings piece to realize the dustproof of rope sheave inner circle 21 and rope sheave outer lane 22, avoid the foreign matter to get into the handing-over department of rope sheave inner circle 21 and rope sheave outer lane 22. Wherein, the fixing piece of the dustproof assembly and the support of the brake assembly are uniformly distributed along the circumferential direction of the inner ring of the rope wheel, so that the stress uniformity of the whole structure is ensured.
As shown in fig. 10, the sheave 2 of this embodiment is symmetrically provided with centrifugal throwers 4, specifically, two centrifugal throwers are respectively located at two opposite vacant positions inside the inner sheave ring 21. Centrifugal mechanisms which are in one-to-one correspondence with the centrifugal throwing blocks 4 are symmetrically arranged on the first side of the two sides of the rope wheel 2, and the two centrifugal mechanisms are linked through a connecting rod 51. Specifically, the centrifugal mechanism comprises a centrifugal swing rod 5 and a fulcrum shaft 50, and the fulcrum shaft 50 is arranged at the extension ends of the other two support rods of the inner ring of the rope pulley; the centrifugal swing rod 5 comprises a first support arm 5a and a second support arm 5b extending from the first support arm 5a, an included angle between the first support arm 5a and the second support arm 5b is an obtuse angle, the length of the first support arm 5a is smaller than that of the second support arm 5b, the end part of the first support arm 51 is connected with the centrifugal swinging block 4, and the middle part of the second support arm 5b is rotatably installed on the fulcrum shaft 50. In addition, two ends of the connecting rod 51 are respectively connected with the two centrifugal swing rods 5, and the connecting rod 51 is located on the same side of the plane where the two fulcrum shafts are located, so that the two centrifugal mechanisms can realize centrifugal linkage.
Wherein, at least one centrifugal swing rod is correspondingly provided with a centrifugal reset mechanism. In this embodiment, a centrifugal swing rod is provided with a centrifugal reset mechanism as an example for detailed description. Specifically, as shown in fig. 10, the centrifugal return mechanism includes a centrifugal spring 52, a centrifugal spring spindle 53 and a spindle sleeve 54, and the centrifugal spring 52 and the spindle sleeve 54 are sequentially sleeved outside the centrifugal spring spindle 53; one end of the centrifugal spring mandrel 53 is fixed on the inner ring 21 of the rope pulley, and the other end is movably matched in the mandrel sleeve 54; one end of the core shaft sleeve 54 is abutted against the centrifugal spring 52, and the other end is connected with one side of the second support arm of the centrifugal swing rod 5 far away from the centrifugal flail. When the centrifugal throwing block 4 is thrown outwards in an overspeed state, the centrifugal throwing block 4 is linked with the centrifugal swing rod 5, the centrifugal swing rod 5 is linked with the core shaft sleeve 54, and the core shaft sleeve 54 compresses the centrifugal spring 52; after the speed limiter is reset, the centrifugal swing rod 5 is reset under the restoring force of the centrifugal spring 52.
As shown in fig. 11, the centrifugal throw block 4 of the present embodiment is further connected to the end of the fulcrum shaft 50 on the second side of the two sides of the sheave through a connecting plate 40, and the connecting plate 40 is rotatably fitted to the fulcrum shaft 50 to realize fulcrum positioning of the centrifugal throw block.
The brake disc 9 and two brake cam assemblies of this embodiment all are located the second side in rope sheave both sides, and wherein, brake disc 9 installs on rope sheave axle 2 through oilless bearing, and two brake cam assemblies symmetric distribution are in the radial both sides of brake disc, and with centrifugal flail 4 one-to-one.
Specifically, as shown in fig. 11, the brake cam assembly includes a brake cam 6 and a lifting rod 60, and the brake cam 60 is rotatably mounted to the sheave 2, specifically, the fulcrum shaft 50 rotatably mounted to the inner ring of the sheave. One end of the lifting rod 60 is rotatably arranged on the brake cam 6, the other end of the lifting rod is rotatably arranged on the centrifugal throw block 4, and the rotating installation mode can adopt a rotating pair connection.
As shown in fig. 12, the brake disk 9 of the present embodiment has a knurled pattern 9a on the peripheral wall thereof to increase the frictional force between the brake cam 6 and the brake disk 9. In addition, as shown in fig. 11, the contact surface of the brake cam 6 and the brake disc 9 of the embodiment has a limiting projection 6a to prevent the brake cam 6 from rotating excessively; wherein, the limiting protrusion 6a can be a screw or a boss.
As shown in fig. 12, the brake disc 9 of the present embodiment is provided with a trip plate 90 for triggering the electric switch 10 of the speed governor. Wherein, still be equipped with spacing axle 91 on the brake disc 9, correspondingly, the curb plate that corresponds the brake disc on the bed frame 1 has the spacing movable groove 1c that corresponds to spacing axle, and spacing axle needs to satisfy switch clapper 90 at the stroke in spacing movable groove 1c and can trigger the electrical switch 10 of overspeed governor, and when speeding promptly, the brake disc rotates, and spacing axle is followed the spacing movable groove activity and is triggered the electrical switch of overspeed governor to switch clapper to spacing extreme position in spacing movable groove. In addition, a reset mechanism for resetting the limiting shaft 91 is installed on the side plate of the base frame 1 corresponding to the brake disc, the reset mechanism comprises a spring 92 and a connecting piece 93, the connecting piece 93 is fixedly installed on one side far away from the moving direction of the limiting shaft, one end of the spring 92 is connected with the connecting piece 93, and the other end of the spring is connected with the limiting shaft 91. When the limiting shaft moves along the limiting movable groove 1c, the spring 92 is stretched; when the governor is reset, the limit shaft is reset by the restoring force of the spring 92. The connecting member 93 may be a fixing member such as a bolt or a screw.
The overspeed governor of this embodiment still includes the electro-magnet, and the electro-magnet is installed in bed frame 1 for remote triggering and reset the overspeed governor, the prior art can be referred to the concrete structure of electro-magnet, and it is not repeated here.
The operating principle of the speed limiter of this embodiment is as follows:
when the brake disc is overspeed, the centrifugal swing block is linked with the corresponding lifting rod, the lifting rod is linked with the corresponding brake cam to rotate, so that the brake cam rotates to be in brake fit with the brake disc, and the rotating directions of the two brake cams are opposite; the outer ring of the rope wheel is stopped through positive pressure between the outer ring of the rope wheel and the brake pad, and constant lifting force is provided for the steel wire rope.
The embodiment also provides an elevator, and the speed limiter is adopted.
Example 2:
the speed governor of the present embodiment is different from embodiment 1 in that:
the rope sheave can be replaced by the integrated rope sheave in the prior art, the structure diversification of the speed limiter is realized, and the requirements of different application occasions are met.
Other structures can refer to embodiment 1.
The elevator of the present embodiment employs the speed governor of the present embodiment.
Example 3:
the speed governor of the present embodiment is different from embodiment 1 in that:
centrifugal canceling release mechanical system and be used for the canceling release mechanical system that spacing axle resets can also adopt other canceling release mechanical systems among the prior art, realize the structure diversification of overspeed governor, satisfy the demand of different application occasions.
Other structures can refer to embodiment 1.
The elevator of the present embodiment employs the speed governor of the present embodiment.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. A speed limiter comprises a base frame, a rope wheel shaft and a rope wheel, wherein the rope wheel is installed on the base frame through the rope wheel shaft, centrifugal throwing blocks are symmetrically arranged on the rope wheel, and centrifugal mechanisms corresponding to the centrifugal throwing blocks are symmetrically arranged on the rope wheel; the speed limiter is characterized by further comprising a brake disc and two braking cam assemblies, wherein the brake disc is positioned on the second side of the rope wheel, the brake disc is mounted on a rope wheel shaft, and the two braking cam assemblies are symmetrically distributed on two radial sides of the brake disc and correspond to the centrifugal throwing blocks one by one; the brake cam assembly comprises a brake cam and a lifting rod, and the brake cam is rotatably arranged on the rope pulley; one end of the lifting rod is rotatably arranged on the brake cam, and the other end of the lifting rod is rotatably arranged on the centrifugal throwing block; when the brake disc is overspeed, the centrifugal swing block is linked with the corresponding lifting rod, the lifting rod is linked with the corresponding brake cam to rotate, so that the brake cam rotates to be in brake fit with the brake disc, and the rotating directions of the two brake cams are opposite.
2. A speed limiter in accordance with claim 1 wherein the peripheral wall of the brake disc is knurled.
3. A speed limiter in accordance with claim 1 wherein the contact surface of the brake cam with the brake disc has a limiting projection.
4. The speed governor of claim 1, wherein the brake disc is provided with a switch trip for triggering an electrical switch of the speed governor; the brake disc is also provided with a limiting shaft, and correspondingly, the base frame is provided with a limiting movable groove corresponding to the limiting shaft; when the overspeed is detected, the brake disc rotates, the limiting shaft moves to the switch beating plate along the limiting movable groove to trigger the electric switch of the speed limiter, and the limiting shaft is limited at the limiting position of the limiting movable groove.
5. The speed governor of claim 4, wherein the base frame is fitted with a reset mechanism for resetting the limit shaft.
6. The speed governor of claim 1, wherein the centrifugal mechanism comprises a centrifugal rocker and a fulcrum shaft, the fulcrum shaft being mounted to the sheave, the centrifugal rocker being rotatably mounted to the fulcrum shaft; one end of the centrifugal swing rod is connected with the centrifugal swing block, the two ends of the connecting rod are respectively connected with the two centrifugal swing rods, and the connecting rod is positioned on the same side of the plane where the two fulcrum shafts are positioned.
7. The speed governor of claim 6, wherein at least one centrifugal rocker arm is provided with a centrifugal return mechanism.
8. The governor of claim 6, wherein the centrifugal throw block is further connected to an end of the fulcrum shaft on the second side of the sheave by a connecting plate that is rotationally coupled to the fulcrum shaft.
9. The governor of claim 1, wherein the sheave comprises:
the rope wheel inner ring is rotatably arranged on the rope wheel shaft;
the inner diameter of the rope wheel outer ring is matched with the outer diameter of the rope wheel inner ring so as to be sleeved outside the rope wheel inner ring;
the brake assembly comprises a brake pad and a mounting piece, wherein the brake pad is mounted on the inner ring of the rope wheel through the mounting piece, the brake pad is in contact fit with the outer ring of the rope wheel through required positive pressure, and the positive pressure can be adjusted through the mounting piece.
10. An elevator, characterized in that a speed limiter according to any of claims 1-9 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010828062.7A CN114074873B (en) | 2020-08-17 | 2020-08-17 | Speed limiter and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010828062.7A CN114074873B (en) | 2020-08-17 | 2020-08-17 | Speed limiter and elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114074873A true CN114074873A (en) | 2022-02-22 |
| CN114074873B CN114074873B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010828062.7A Active CN114074873B (en) | 2020-08-17 | 2020-08-17 | Speed limiter and elevator |
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| Country | Link |
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| CN (1) | CN114074873B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010228879A (en) * | 2009-03-27 | 2010-10-14 | Mitsubishi Electric Corp | Speed governor for elevator |
| JP2011042427A (en) * | 2009-08-19 | 2011-03-03 | Fujitec Co Ltd | Speed governor of elevator |
| CN106629299A (en) * | 2016-12-23 | 2017-05-10 | 河北东方富达机械有限公司 | Centrifugal block throwing type speed governor |
| CN107777502A (en) * | 2016-08-29 | 2018-03-09 | 杭州沪宁电梯部件股份有限公司 | A kind of stable state low speed limiter of speed |
| CN110271935A (en) * | 2018-03-15 | 2019-09-24 | 杭州沪宁电梯部件股份有限公司 | A kind of rope sheave governor trigger mechanism |
| CN212893337U (en) * | 2020-08-17 | 2021-04-06 | 杭州沪宁电梯部件股份有限公司 | Speed limiter and elevator |
-
2020
- 2020-08-17 CN CN202010828062.7A patent/CN114074873B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010228879A (en) * | 2009-03-27 | 2010-10-14 | Mitsubishi Electric Corp | Speed governor for elevator |
| JP2011042427A (en) * | 2009-08-19 | 2011-03-03 | Fujitec Co Ltd | Speed governor of elevator |
| CN107777502A (en) * | 2016-08-29 | 2018-03-09 | 杭州沪宁电梯部件股份有限公司 | A kind of stable state low speed limiter of speed |
| CN106629299A (en) * | 2016-12-23 | 2017-05-10 | 河北东方富达机械有限公司 | Centrifugal block throwing type speed governor |
| CN110271935A (en) * | 2018-03-15 | 2019-09-24 | 杭州沪宁电梯部件股份有限公司 | A kind of rope sheave governor trigger mechanism |
| CN212893337U (en) * | 2020-08-17 | 2021-04-06 | 杭州沪宁电梯部件股份有限公司 | Speed limiter and elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114074873B (en) | 2024-05-07 |
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