CN103708317A

CN103708317A - Elevator safety device

Info

Publication number: CN103708317A
Application number: CN201410012019.8A
Authority: CN
Inventors: 童劭珣
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-10
Filing date: 2014-01-10
Publication date: 2014-04-09

Abstract

The invention provides an elevator safety device which can ensure that an elevator stops at a floor elevator door when a falling elevator emergently brakes. A base is arranged at the bottom of the elevator, trigger wheels are pressed on an elevator rope, the lower ends of trigger wheel frames are thicker than vertical sliding grooves, the upper ends of the trigger wheel frames are provided with connecting levers, the middle portions of the trigger wheel frames can slide in the vertical sliding grooves, and the two ends of each hard spring are fixed to the base and the lower end of the corresponding trigger wheel frame respectively. A traction rope is fixed to the connecting levers and divided into two branches after passing by vertical pulleys and a horizontal pulley and then connected to safety cock tail portions after passing by horizontal pulleys respectively, and wheel grooves are formed in the horizontal pulleys so that the traction rope can be prevented from falling off. Two safety cocks can slide in sliding grooves, and the two ends of each soft spring are fixed to the corresponding sliding groove and the corresponding safety cock respectively. When the lower ends of the trigger wheel frames abut against the vertical sliding grooves, the elastic force of the hard springs and the elastic force of the soft springs are smaller than the pressure which is exerted on the base when the elevator runs normally, the safety cocks are retracted into the sliding grooves, when the connecting levers of the trigger wheel frames make contact with the base, the safety cocks extend out and can be overlapped on emergency stopping frames which are fixed to the inner wall of an elevator vertical shaft, and the hard springs and the soft springs can be kept in the semi-compressed state.

Description

Elevator car safety

Technical field:

Patent of the present invention relates to a kind of elevator car safety, especially can, when urgent stop ruptures because of hawser the elevator falling, guarantee that elevator is just in time parked in the elevator doorway of floor.

Background technology:

Present elevator is caught guide rail stop elevator by safety tongs when hawser breaks, and the elevator position of stopping is uncontrollable, often occurs by card, being parked between two floors after elevator faults, causes rescue and the passenger inconvenience of escaping.

Summary of the invention:

In order to overcome existing elevator safety gear after the elevator that promptly stop hawser breaks, elevator institute off-position is put uncontrollable shortcoming, patent of the present invention provides a kind of elevator car safety, can, when urgent system ruptures because stopping hawser the elevator falling, guarantee that elevator is just in time parked in the elevator doorway of floor.

The technical scheme of patent of the present invention is: pedestal is arranged on elevator bottom, and one, the pulley of base bottom be tight pulley, another for trigger wheel, trigger take turns with tight pulley can together be pressed on elevator cable and roll; Perpendicular chute is fixed on base bottom, triggering wheel shaft is fixed on triggering wheel carrier, trigger wheel carrier lower end thicker than perpendicular chute, there is connecting lever upper end, and centre portion can be by perpendicular chute through pedestal, and just in time can in perpendicular chute, slide up and down, but cannot rock to surrounding, when triggering wheel carrier moves downward connecting lever, encounter behind pedestal top, just can not continue to move downward, when triggering wheel carrier moves upward to lower end, encounter behind perpendicular chute bottom, just can not continue upward movement; A hard spring is enclosed within outside perpendicular chute, and hard spring upper end is fixed on base bottom, and lower end is fixed on triggers wheel carrier lower end; One end of hauling rope is fixed on connecting lever end, walks around perpendicular pulley, then walks around a horizontal trolley, be divided into afterwards two of left and right fork, two forks are walked around respectively a horizontal trolley, and end is fixed on safety cock afterbody, safety cock afterbody is fixed on safety cock, and hauling rope does not have elasticity substantially; Perpendicular pulley is fixed on base bottom by perpendicular pulley yoke, and horizontal trolley is fixed on base bottom by horizontal trolley frame, and the race of horizontal trolley is darker, prevents that hauling rope from coming off; Two safety cocks are mounted respectively in a chute, and safety cock is only to slide inside and outside chute, and two chutes are separately fixed at base bottom; Safety cock afterbody is thinner than safety cock, and soft spring is enclosed within outside safety cock afterbody, and one end is fixed on chute inwall, and the other end is fixed on safety cock inner side, and the elasticity of soft spring is less than hard spring; When perpendicular chute bottom is encountered in triggering wheel carrier lower end, the elastic force of hard spring and soft spring is slightly less than the pressure of elevator to pedestal under the various states of elevator normal operation, and safety cock contracts in chute; Suddenly stop frame and be fixed on lift well inwall, one side is close to lift well inwall, and safety cock is from chute is protruding, can ride over anxious stopping on frame, after safety cock is inwardly retracted, just in time can when elevator up-and-down movement, not encounter the anxious frame that stops, the installation site of suddenly stopping frame can regulate.When elevator normal operation, triggering wheel is pressed on hawser, combined action due to bearing force and the elevator self gravitation of hawser, the upper surface that triggers wheel carrier lower end is against perpendicular chute lower end, now the elastic force of hard spring and soft spring is less than the pressure of elevator to pedestal, all, in incomplete squeezed state, on safety cock, contracting, in chute, does not affect elevator up-and-down movement; When hawser can not provide enough bearing forces to elevator safety operation because of reasons such as fractures, enter and touch method state, triggering wheel is subject to hawser bearing force and reduces or disappear, the bearing force that triggering wheel carrier bottom is subject to is less than the elastic force that top is subject to hard spring, along perpendicular chute, ejected downwards, until connecting lever is encountered pedestal top and stopped; Connecting lever is during to base motion, and hauling rope reduces safety cock afterbody pulling force, and soft spring outwards ejects safety cock, and safety cock stretches out base bottom along chute, if now elevator continues to fall, safety cock will ride over anxious stopping on frame, and elevator stops falling; Adjust anxious installation site of stopping frame, just can adjust the position that fault elevator stops, at the every one deck of floor, the anxious frame that stops is all installed, elevator, at any one deck et out of order, can stop at this one deck; When hawser is repaired, while again providing enough bearing forces to elevator safety operation, upwards draw elevator, due to elevator self gravitation reason, elevator compresses hard spring by pedestal, triggers wheel carrier and protrudes upward along perpendicular chute, connecting lever is away from pedestal, pulling traction rope, the pulling force of hauling rope is greater than after the elastic force of soft spring, pulls safety cock afterbody, drive safety cock compression soft spring, until trigger the lower end of wheel carrier, encounter perpendicular chute bottom, in now safety cock retraction chute, elevator recovers normal operation.Hard spring and soft spring are all always in incomplete compressive state, and due to the elastic force effect of soft spring, safety cock afterbody keeps pulling force to hauling rope always, so hauling rope, always in tight state, can not come off from the race of horizontal trolley.

Also directly usining at the bottom of elevator as pedestal of patent of the present invention.

It can be difformity that the urgency of patent of the present invention is stopped frame, suddenly stop frame upper surface safety cock stretch out Shi Suoneng take part can be higher or lower than the anxious frame installation site of stopping, and change the position of being stopped by urgent stop elevator with this.

The beneficial effect of patent of the present invention is, can control the position that fault elevator is stopped when by emergency braking, can guarantee that elevator is just in time parked in the elevator doorway of floor.

Accompanying drawing explanation:

Fig. 1 is in the sectional view at safety cock place after safety cock stretches out;

When Fig. 2 is normal operation in the sectional view at safety cock place;

The horizontal cutting figure of safety cock place when Fig. 3 is elevator normal operation;

Fig. 4 is that safety cock stretches out the horizontal cutting figure of rear safety cock place;

Fig. 5 is in the sectional view that triggers wheel place after safety cock stretches out;

When being elevator normal operation, Fig. 6 triggering the sectional view at wheel place;

Fig. 7 triggers wheel place rip cutting figure while being elevator normal operation;

Fig. 8 is that safety cock stretches out rear triggering wheel place's rip cutting figure;

Fig. 9 is perpendicular pulley place's rip cutting figure;

Figure 10 is at a horizontal trolley place rip cutting figure.

1. pedestals in figure, 2. safety cock, 3. chute, 4. soft spring, 5. hauling rope, the 6. anxious frame that stops, 7. safety cock afterbody, 8. horizontal trolley frame, 9. horizontal trolley, 10. erect pulley, 11. perpendicular pulley yokes, 12. trigger wheel shafts, 13. trigger wheel, and 14. trigger wheel carrier, 15. perpendicular chutes, 16. hard springs, 17. tight pulleys, 18. connecting levers.

The specific embodiment:

In Fig. 6 when hawser because the reason such as fracture is can not provide enough bearing forces to elevator safety operation time, triggering wheel (13) is subject to hawser bearing force and reduces, trigger wheel carrier (14) and be subject to hard spring (16) elastic force effect, along perpendicular chute (15), stretch out downwards, connecting lever (18) is to pedestal (1) motion, and now hauling rope (5) reduces safety cock afterbody (7) pulling force.

Hauling rope in Fig. 3 (5) reduces safety cock afterbody (7) pulling force, and soft spring (4) outwards ejects safety cock (2).

In Fig. 1, elevator continues to drop, and it is upper that safety cock (2) drops on the anxious frame (6) that stops, and elevator stops dropping.

In Fig. 5, working as hawser is repaired, while again providing enough bearing forces to elevator safety operation, upwards draw elevator, due to elevator self gravitation reason, elevator is by pedestal (1) compression hard spring (16), trigger wheel carrier (14) and protrude upward along perpendicular chute (15), connecting lever (18) is away from pedestal (1), pulling traction rope (5).

In Fig. 4, when connecting lever (18) pulling traction rope (5), hauling rope (5) pulls safety cock afterbody (7), drives safety cock (2) compression soft spring (10), and safety cock (2) is retracted along chute (3).

Claims

1. an elevator car safety, trigger wheel is pressed on elevator cable together with tight pulley, and can on hawser, roll, it is characterized in that: trigger wheel and tight pulley and be arranged on below pedestal, pedestal is arranged on elevator bottom, perpendicular chute is fixed on base bottom, triggering wheel shaft is fixed on triggering wheel carrier, trigger wheel carrier lower end thicker than perpendicular chute, there is connecting lever upper end, centre portion can be by perpendicular chute through pedestal, and just in time can in perpendicular chute, slide up and down, but cannot rock to surrounding, when moving downward connecting lever, encounters behind pedestal top triggering wheel carrier, just can not continue to move downward, a hard spring is enclosed within outside perpendicular chute, hard spring upper end is fixed on base bottom, lower end is fixed on triggers wheel carrier lower end, one end of hauling rope is fixed on connecting lever end, walks around perpendicular pulley, then walks around a horizontal trolley, be divided into afterwards two of left and right fork, two forks are walked around respectively a horizontal trolley, and end is fixed on safety cock afterbody, safety cock afterbody is fixed on safety cock, and hauling rope does not have elasticity substantially, perpendicular pulley is fixed on base bottom by perpendicular pulley yoke, and horizontal trolley is fixed on base bottom by horizontal trolley frame, and the race of horizontal trolley is darker, two safety cocks are mounted respectively in a chute, and safety cock is only to slide inside and outside chute, and two chutes are separately fixed at base bottom, safety cock afterbody is thinner than safety cock, and soft spring is enclosed within outside safety cock afterbody, and one end is fixed on chute inwall, and the other end is fixed on safety cock inner side, and the elasticity of soft spring is less than hard spring, when perpendicular chute bottom is encountered in triggering wheel carrier lower end, the elastic force of hard spring and soft spring is slightly less than the pressure of elevator to pedestal under the various states of elevator normal operation, and safety cock contracts in chute, suddenly stop frame and be fixed on lift well inwall, one side is close to lift well inwall, and safety cock is from chute is protruding, can ride over anxious stopping on frame, after safety cock is inwardly retracted, just in time can when elevator up-and-down movement, not encounter the anxious frame that stops, the installation site of suddenly stopping frame can regulate, hard spring and soft spring are all the time in incomplete compressive state.

2. elevator car safety according to claim 1, is characterized in that: at the bottom of pedestal can be elevator.

3. elevator car safety according to claim 1, is characterized in that: suddenly stopping frame can be difformity, and the anxious framves that stop of many groups can be installed in a lift well.