CN2098492U

CN2098492U - Overrunning governor for lift

Info

Publication number: CN2098492U
Application number: CN 91220772
Authority: CN
Inventors: 侯庆祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-28
Filing date: 1991-08-28
Publication date: 1992-03-11

Abstract

The utility model relates to a speed limiter for an elevator, which is used for limiting the speed of the elevator and producing signal to brake the elevator when a cable wire of the elevator breaks, and is mainly composed of a rope pulley, a ratchet wheel, a pull rod, two swinging blocks, etc. The speed limiter uses the centrifugal force of the swinging blocks on the rope pulley when the elevator is overspeed, and controls a travel switch to drive the pull rod for clamping the cable wire, so that a pair of safety pincers is lifted. The utility model has the advantages of simple structure, stable performance, no noise, reliable operation, etc., and can be used for replacing the safety components of a domestic elevator at present or reforming the existing old elevators.

Description

Overrunning governor for lift

The utility model relates to a kind of device that limits elevator overspeed and send signal braking elevator when elevator wire rope ruptures.

At present, the elevator governor of domestic use generally has two shortcomings, during first action critical conditions, easily produces noise, and it two is complex structures, and particularly the part of clamped wire rope is very complicated, makes the productive costs height.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, and provides a kind of when cage running velocity during near governor tripping speed, and limit switch is opened in the velocity limiter, and towing machine is shut down; When it surpasses governor tripping speed, velocity limiter action manoeuvring safety pincers, the velocity limiter of braking cage.

Below in conjunction with accompanying drawing the utility model is further specified.

Accompanying drawing 1 is the utility model front view.

Accompanying drawing 2 is the utility model left view.

Accompanying drawing 3 is the utility model right elevation.

Accompanying drawing 4 is the utility model birds-eye view.

See accompanying

drawing

1,2,3,4, the utility model by main shaft (1), rope sheave (2), ratchet (3), get rid of that piece (4), (5), connecting rod (6), square head bolt (7), ratchet (8), pull bar (9), speed adjustment screw (10), spring (11), (12), (13), switch re-pack (14), travel switch (15), rocking arm (16), brake block (17), support (18), ratchet block (19), bearing pin (20) form. Main shaft (1) is fixed on the support (18) by two ends, and rope sheave (2) is fixed on the main shaft (1) by bearing, and ratchet (3) is contained on the main shaft (1) movingly, and get rid of piece (4), (5) and be fixed on the rope sheave (2) by the screw symmetry respectively, Both are connected by connecting rod (6), one that gets rid of piece (5) is fixedly connected with a speed adjustment screw (10), one of speed adjustment screw (10) is fixed on the rope sheave (2), speed adjustment screw (10) is upper to have spring (12) by nut compressing, a square head bolt (7) is equipped with in the other end of getting rid of piece (5), ratchet (8) is fixed on the rope sheave (2) of ratchet (3) top by bearing pin, the spring (13) that (8) one on ratchet is fixed on the rope sheave (2) hauls, the other end is blocked by ratchet block (19), ratchet block (19) bearing pin is fixed on the rope sheave (2), (9) one on pull bar is connected by bearing pin (20) with ratchet (3), the rocking arm (16) that is fixed on the support (18) is passed in the other end, by nut spring (11) pressure is connected on the rocking arm (16), brake block (17) bearing pin is connected on the rocking arm (16) of rope sheave (2) top, switch re-pack (14) be fixed by screws on the support (18) between travel switch (15) and the pull bar (9), travel switch (15) is fixed on the support (18), and support (18) is installed on the floor by backing plate.

When using the utility model, if the speed of elevator reaches when driving over the speed limit, rope sheave (2) accelerates to rotate, at this moment, get rid of piece (5) under the effect of centrifugal force on the rope sheave (2), one with square head bolt (7) overcomes speed adjustment screw (10) upper spring (12) upper elasticity, screw on fixing rope sheave (2) is outwards thrown away, square head bolt (17) is run into switch re-pack (14), travel switch (15) is cut off, the control circuit of whole elevator is cut off, electromagnetic brake power-off brake elevator; If it is descending that elevator continues, getting rid of piece (5) continues to throw away, push bearing pin and be fixed on ratchet block (19) on the rope sheave (2), ratchet block (19) breaks away from of ratchet (8), and under the elastic force effect of spring (13), ratchet (8) rotates around bearing pin, withstand on the ratchet (3), so rope sheave (2), drives ratchet (3) by the ratchet (8) on it and rotates, ratchet (3) makes by the bearing pin (20) that is connected with pull bar (9) and draws Bar (9) action, on the one hand pull bar (9) afterbody hits switch re-pack (14), make travel switch (15) action, the elevator outage, pull bar (9) spurs rocking arm (16) on the other hand, rocking arm (16) is rotated around the bearing pin that is fixed on support (18) rely on rope sheave (2), drive brake block (17) and press on the steel wire rope in the grooving of rope sheave (2), with rope sheave (2), clamp steel wire rope, the action of drive elevator safety gear, at this moment, spring (11) compression is when the chucking power of spring (11) is enough to overcome the pulling force of steel wire rope, brake block (17) is just clamped steel wire rope fully, and safety tongs is raised.

The utlity model has advantages such as simple in structure, stable performance, noiselessness, use be reliable, can be used as the renewal product of present domestic elevator safety parts, also can be used for transforming the existing elevator that falls behind.

Claims

1; Elevator governor; Comprise main shaft (1); Rope sheave (2); Ratchet (3); Get rid of piece (4); (5); Connecting rod (6); Square head bolt (7); Ratchet (8); Pull bar (9); Speed adjustment screw (10); Spring (11); (12); (13); Switch re-pack (14); Travel switch (15); Rocking arm (16); Brake block (17); Support (18); Ratchet block (19); Bearing pin (20); Main shaft (1) is fixed on the support (18) by two ends; Rope sheave (12) is fixed on the main shaft (1) by bearing; Support (18) is installed on the floor by backing plate; It is characterized in that: ratchet (3) is contained on the main shaft (1) movingly; Get rid of piece (4); (5) be fixed on the rope sheave (2) by the screw symmetry respectively; Both are connected by connecting rod (6); One that gets rid of piece (5) is fixedly connected with a speed adjustment screw (10); One of speed adjustment screw (10) is fixed on the rope sheave (2); Speed adjustment screw (10) is upper to have spring (12) by nut compressing; A square head bolt (7) is equipped with in the other end of getting rid of piece (5); Ratchet (8) is fixed on the rope sheave (2) of ratchet (3) top by bearing pin; A spring (13) that is fixed on the rope sheave (2) of ratchet (8) hauls; The other end is blocked by ratchet block (19); Ratchet block (19) bearing pin is fixed on the rope sheave (2); (9) one on pull bar is connected by bearing pin (20) with ratchet (3); The rocking arm (16) that is fixed on the support (18) is passed in the other end; By nut spring (11) pressure is connected on the rocking arm (16); Brake block (17) bearing pin is connected on the rocking arm (16) of rope sheave (2) top; Switch re-pack (14) be fixed by screws on the support (18) between travel switch (15) and the pull bar (9), travel switch (15) is fixed on the support (18).