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CN-121990435-A - Elevator speed limiter and elevator

CN121990435ACN 121990435 ACN121990435 ACN 121990435ACN-121990435-A

Abstract

The application relates to an elevator speed limiter and an elevator. The elevator speed limiter comprises a supporting component, a rope wheel mechanism, a ratchet mechanism and a braking mechanism, wherein the supporting component comprises a frame and a mounting shaft, and the mounting shaft is arranged on the frame in a penetrating manner. The rope wheel mechanism comprises a rope wheel, a first centrifugal hammer, a second centrifugal hammer and a connecting rod, wherein the rope wheel is rotatably arranged on the installation shaft, the first centrifugal hammer and the second centrifugal hammer are both rotatably arranged on one side of the rope wheel, one end of the connecting rod is rotatably connected with the first centrifugal hammer, and the other end of the connecting rod is rotatably connected with the second centrifugal hammer. The ratchet mechanism comprises a pawl and a ratchet wheel, the pawl is movably arranged on the other side of the rope wheel, the first centrifugal hammer is connected with the pawl, the ratchet wheel is arranged on the mounting shaft, and the first centrifugal hammer is used for driving the pawl to be meshed with the ratchet wheel. The braking mechanism is movably arranged on the frame and is connected with the ratchet wheel. The elevator speed limiter and the elevator have the advantages of small occupied space and good stability.

Inventors

  • Ning Kangxiang
  • Jiang Pingtao
  • XIE WEI
  • YANG DEMING
  • FANG XINGLIN

Assignees

  • 日立电梯（中国）有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (11)

  1. 1. An elevator governor, comprising: the support assembly (100), the support assembly (100) comprises a frame (110) and a mounting shaft (120), and the mounting shaft (120) is arranged on the frame (110) in a penetrating manner; A sheave mechanism (200), the sheave mechanism (200) including a sheave (210) and a centrifugal hammer assembly (220), the centrifugal hammer assembly (220) including a first centrifugal hammer (221), a second centrifugal hammer (222) and a connecting rod (223), the sheave (210) being rotatably mounted to the mounting shaft (120), both the first centrifugal hammer (221) and the second centrifugal hammer (222) being rotatably mounted to one side of the sheave (210), one end of the connecting rod (223) being rotatably connected to the first centrifugal hammer (221), the other end of the connecting rod (223) being rotatably connected to the second centrifugal hammer (222); A ratchet mechanism (300), the ratchet mechanism (300) comprising a pawl (310) and a ratchet (320), the pawl (310) being movably mounted on the other side of the sheave (210), the first centrifugal hammer (221) being connected to the pawl (310), the ratchet (320) being mounted on the mounting shaft (120), the first centrifugal hammer (221) driving the pawl (310) to engage with the ratchet (320) when the rotational centrifugal force of the first centrifugal hammer (221) exceeds a threshold value, and And a brake mechanism (400), wherein the brake mechanism (400) is movably arranged on the frame (110), and the brake mechanism (400) is connected with the ratchet wheel (320).
  2. 2. Elevator speed limiter according to claim 1, characterized in that: the first centrifugal hammer (221) is eccentrically arranged on the rope wheel (210) so that a first end part and a second end part are arranged at two ends of the installation position of the first centrifugal hammer (221), the weight of the first end part is larger than that of the second end part, the second centrifugal hammer (222) is eccentrically arranged on the rope wheel (210) so that a third end part and a fourth end part are arranged at two ends of the installation position of the second centrifugal hammer (222), and the weight of the third end part is larger than that of the fourth end part; One end of the connecting rod (223) is connected to the second end, and the other end of the connecting rod (223) is connected to the third end.
  3. 3. Elevator speed limiter according to claim 2, characterized in that: The pawl (310) is provided with an engagement part (311) and a first triggering part (312), the engagement part (311) and the first triggering part (312) are respectively arranged at two opposite ends of the pawl (310), and the engagement part (311) is used for being engaged with and connected with a ratchet of the ratchet wheel (320); The first centrifugal hammer (221) further comprises a trigger rod (2211), the trigger rod (2211) is arranged at the first end portion, the trigger rod (2211) abuts against the first trigger portion (312), and the trigger rod (2211) drives the first trigger portion (312) to rotate when the first centrifugal hammer (221) performs centrifugal motion.
  4. 4. An elevator speed limiter according to claim 3, characterized in that: Pawl (310) with first centrifugal hammer (221) install in through first coupling assembling (240) in rope sheave (210), first coupling assembling (240) include first connecting axle (241), gasket (242), first flat pad (243), first bullet pad (244) and first fastener (245), the one end card of first connecting axle (241) is located first centrifugal hammer (221), the other end of first connecting axle (241) runs through in proper order first centrifugal hammer (221), rope sheave (210) with pawl (310) and connect first fastener (245), gasket (242), first flat pad (243) and first bullet pad (244) set up in between pawl (310) and first fastener (245); The second centrifugal hammer (222) is installed in the rope pulley (210) through a second connecting assembly (250), the second connecting assembly (250) comprises a second connecting shaft (251), a second flat pad (252), a second elastic pad (253) and a second fastening piece (254), one end of the second connecting shaft (251) is clamped on the second centrifugal hammer (222), the other end of the second connecting shaft (251) sequentially penetrates through the second centrifugal hammer (222), the rope pulley (210) and is connected with the second fastening piece (254), and the second flat pad (252) and the second elastic pad (253) are arranged between the rope pulley (210) and the second fastening piece (254).
  5. 5. The elevator governor of claim 4, wherein: the ratchet mechanism (300) further comprises a bushing (340) and a torsion spring (350), the bushing (340) is arranged between the pawl (310) and the first connecting shaft (241), the torsion spring (350) is arranged on the first connecting shaft (241), one end of the torsion spring (350) is connected with the rope wheel (210), and the other end of the torsion spring (350) is abutted against the first triggering part (312).
  6. 6. An elevator speed limiter according to claim 3, characterized in that: The rope pulley mechanism (200) further comprises an adjusting component (230), the adjusting component (230) comprises an adjusting seat (231), a first adjusting rod (232), a first elastic piece (233) and a first adjusting piece (234), the adjusting seat (231) is arranged on the rope pulley (210), the adjusting seat (231) is provided with a through hole (231A), one end of the first adjusting rod (232) is connected to the fourth end, the other end of the first adjusting rod (232) is movably arranged on the through hole (231A), the first adjusting piece (234) is movably arranged on the first adjusting rod (232), one end of the first elastic piece (233) is abutted to the adjusting seat (231), and the other end of the first elastic piece (233) is abutted to the first adjusting piece (234).
  7. 7. An elevator speed limiter according to claim 3, characterized in that: the pawl (310) further comprises a second triggering part (313), and the second triggering part (313) is arranged on one side of the meshing part (311); The ratchet mechanism (300) further comprises a trigger plate (330), the trigger plate (330) is rotatably mounted on the stand (110), the stand (110) is provided with a sliding groove (110B), one end of the trigger plate (330) is movably arranged in the sliding groove (110B), and the other end of the trigger plate (330) is movably abutted against the second trigger part (313).
  8. 8. The elevator governor of claim 6, wherein: The meshing part (311) is provided with a first contact surface, a tooth groove (320A) of the ratchet wheel (320) is provided with a second contact surface, when the pawl (310) is meshed with the ratchet wheel (320), the first contact surface is meshed with the second contact surface, the normal directions of the first contact surface and the second contact surface are perpendicular to the radial direction of a spoke of the rope wheel (210) provided with the pawl (310) during meshing, the adjusting seat (231) is further provided with a limiting part (2311), the limiting part (2311) is used for being abutted against the meshing part (311), and when the pawl (310) is located at a limiting position meshed with the ratchet wheel (320), the meshing part (311) is abutted against the limiting part (2311).
  9. 9. Elevator speed limiter according to claim 1, characterized in that: The braking mechanism (400) comprises a pull rod (410), a second adjusting rod (430), a braking seat (420), a second elastic piece (450) and a braking shoe (460), one end of the pull rod (410) is connected between the ratchet wheel (320), the other end of the pull rod (410) is provided with a bending part (411), the bending part (411) is connected with the second adjusting rod (430), the second adjusting rod (430) is provided with a movable second adjusting piece (440), one end of the braking seat (420) is arranged on the frame (110), the second adjusting rod (430) movably penetrates through the other end of the braking seat (420), the second elastic piece (450) is arranged between the braking seat (420) and the second adjusting piece (440), and the braking shoe (460) is arranged on one side of the braking seat (420) towards the rope wheel (210).
  10. 10. The elevator governor of claim 9, wherein: The elevator speed limiter further comprises a switch assembly (500), the switch assembly (500) comprises a speed limiter switch (510) and a switch bracket (520), the switch bracket (520) is connected to the frame (110), the speed limiter switch (510) is installed on the switch bracket (520), and the speed limiter switch (510) is arranged on one side of the centrifugal hammer assembly (220).
  11. 11. An elevator, characterized in that: An elevator governor comprising any of claims 1-10.

Description

Elevator speed limiter and elevator Technical Field The application relates to the technical field of elevator components, in particular to an elevator speed limiter and an elevator. Background The elevator speed limiter has the function of triggering a safety braking mechanism when the running speed of the elevator exceeds a rated speed by a certain range, so that the elevator stops running, and the safety of passengers and equipment is ensured. At present, a medium-high speed elevator in the market is an elevator with rated speed of more than 120m/min, and a speed limiter of the medium-high speed elevator generally adopts a rope pulley with the diameter of 240mm, so that the speed limiter has larger volume, higher cost and occupies larger hoistway space. Further, the speed limiter applied to the middle-high speed elevator in the market generally has the problem that the higher the action speed is, the more inaccurate the response of a trigger mechanism is, and the defects of large occupied space and poor action stability are generally caused by unsmooth engagement of a ratchet and a pawl of the speed limiter. Disclosure of Invention Accordingly, it is necessary to provide an elevator governor and an elevator, which solve the problems of large occupied space and poor operation accuracy of the elevator governor. In a first aspect, there is provided an elevator governor comprising: The support assembly comprises a frame and a mounting shaft, and the mounting shaft is arranged on the frame in a penetrating manner; the rope wheel mechanism comprises a rope wheel and a centrifugal hammer assembly, the centrifugal hammer assembly comprises a first centrifugal hammer, a second centrifugal hammer and a connecting rod, the rope wheel is rotatably installed on the installation shaft, the first centrifugal hammer and the second centrifugal hammer are rotatably installed on one side of the rope wheel, one end of the connecting rod is rotatably connected with the first centrifugal hammer, and the other end of the connecting rod is rotatably connected with the second centrifugal hammer; The ratchet mechanism comprises a pawl and a ratchet wheel, the pawl is movably arranged on the other side of the rope wheel, the first centrifugal hammer is connected with the pawl, the ratchet wheel is arranged on the mounting shaft, and when the rotation centrifugal force of the first centrifugal hammer exceeds a threshold value, the first centrifugal hammer drives the pawl to be meshed with the ratchet wheel; and the braking mechanism is movably arranged on the frame and is connected with the ratchet wheel. In one embodiment, the first centrifugal hammer is eccentrically mounted on the rope sheave such that a first end and a second end are provided at both ends of the first centrifugal hammer at a mounting position, the first end having a weight greater than that of the second end, and the second centrifugal hammer is eccentrically mounted on the rope sheave such that a third end and a fourth end are provided at both ends of the second centrifugal hammer at the mounting position, the third end having a weight greater than that of the fourth end; One end of the connecting rod is connected to the second end part, and the other end of the connecting rod is connected to the third end part. In one embodiment, the pawl is provided with an engagement portion and a first triggering portion, the engagement portion and the first triggering portion are respectively arranged at two opposite ends of the pawl, and the engagement portion is used for being in meshed connection with the ratchet teeth of the ratchet wheel; the first centrifugal hammer further comprises a trigger rod, the trigger rod is arranged at the first end part and is abutted to the first trigger part, and the trigger rod drives the first trigger part to rotate when the first centrifugal hammer performs centrifugal motion. In one embodiment, the pawl and the first centrifugal hammer are mounted on the rope sheave through a first connecting component, the first connecting component comprises a first connecting shaft, a gasket, a first flat pad, a first elastic pad and a first fastener, one end of the first connecting shaft is clamped on the first centrifugal hammer, the other end of the first connecting shaft sequentially penetrates through the first centrifugal hammer, the rope sheave and the pawl and is connected with the first fastener, and the gasket, the first flat pad and the first elastic pad are arranged between the pawl and the first fastener; The second centrifugal hammer is installed in the rope sheave through second coupling assembling, second coupling assembling includes second connecting axle, second flat pad, second bullet pad and second fastener, the one end card of second connecting axle is located the second centrifugal hammer, the other end of second connecting axle runs through in proper order the second centrifugal hammer the rope sheave is connected the secon