Elevator safety gear lifting mechanism

Abstract

The utility model discloses an elevator safety tongs lifting mechanism which comprises a fixing seat, at least two screws are arranged on the fixing seat, springs are arranged on the screws, and locking nuts are arranged at the ends, away from the fixing seat, of the screws. The movable seat is movably connected to the screw rod, the bottom of the spring abuts against the movable seat, a tensioning wheel is arranged on the movable seat, and a rack is arranged on the movable seat; and the gear disc is rotationally connected to the lift car, the gear disc is meshed with the rack, a safety gear lifting rod is arranged on the gear disc, and the safety gear lifting rod is connected with a safety gear. Compared with the prior art, the lifting action of the safety tongs is accurate, mechanical monitoring is more stable, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to an elevator safety clamp lifting mechanism. Background Technology

[0002] An elevator safety brake is a safety device that, under the control of the speed governor, brings the elevator car to an emergency stop and clamps it onto the guide rails when the elevator speed exceeds the speed limit set by the speed governor, or in the event of a breakage or slack in the suspension rope. It provides effective protection for the safe operation of the elevator and is generally installed on the car frame or counterweight frame. Safety brakes are divided into unidirectional and bidirectional safety brakes. With the increasing demand for overspeed protection during upward elevator travel, bidirectional safety brakes are now more widely used.

[0003] The existing patent number CN201310420467.7 describes an elevator safety clamp lifting mechanism. However, this device is not very effective, has low stability, and is inconvenient to use. Utility Model Content

[0004] This utility model provides an elevator safety clamp lifting mechanism, which has precise lifting action, more stable mechanical monitoring, and good performance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an elevator safety clamp lifting mechanism, comprising:

[0006] A fixing base, wherein at least two screws are provided on the fixing base, springs are provided on the screws, and a locking nut is provided at the end of the screws away from the fixing base;

[0007] A movable seat is movably connected to the screw, the bottom of the spring abuts against the movable seat, a tension wheel is provided on the movable seat, and a rack is provided on the movable seat;

[0008] A gear plate is rotatably connected to the car, and the gear plate meshes with the rack. A safety clamp lifting rod is provided on the gear plate, and the safety clamp lifting rod is connected to the safety clamp.

[0009] As a further description of the above technical solution:

[0010] The movable seat is provided with a tension wheel mounting bracket, which is located between two screws, and the tension wheel is rotatably connected to the tension wheel mounting bracket.

[0011] As a further description of the above technical solution:

[0012] A connecting plate is provided on the movable seat, and the rack is disposed on the connecting plate.

[0013] As a further description of the above technical solution:

[0014] The connecting plate is provided with a clearance hole, and the gear plate is located inside the clearance hole.

[0015] As a further description of the above technical solution:

[0016] The connecting plate is provided with a plurality of vertically arranged limiting elongated holes, and a limiting rod is provided in the limiting elongated holes. The limiting rod is fixedly connected to the car.

[0017] As a further description of the above technical solution:

[0018] A pin is provided on the gear plate, and the safety clamp lifting rod is connected to the pin.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: During elevator operation, the steel wire ropes on both sides of the car are tightened under the weight of the car. If the car tilts to one side or one side of the steel wire rope breaks, the compression spring group located on one side of the car will rebound, simultaneously driving the rack and pinion lifting mechanism to move. The gear of the rack and pinion meshes with the rack and pinion, which drives the rack and pinion to rotate. The pin on the rack and pinion is connected to the safety clamp lifting rod, thereby causing the safety clamp to move and brake the car onto the guide rail. The lifting action of the safety clamp is precise, the mechanical monitoring is more stable, and the performance is good. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an elevator safety clamp lifting mechanism.

[0022] Figure 2 This is an exploded view of an elevator safety clamp lifting mechanism.

[0023] Figure 3 This is a reference diagram showing the usage status of an elevator safety clamp lifting mechanism.

[0024] Legend:

[0025] 1. Fixed seat; 2. Screw; 3. Car; 4. Spring; 5. Locking nut; 6. Movable seat; 7. Tensioner wheel; 8. Rack; 9. Gear plate; 10. Safety clamp lifting rod; 11. Safety clamp; 12. Tensioner wheel mounting bracket; 13. Connecting plate; 14. Clearance hole; 15. Limiting elongated hole; 16. Limiting rod; 17. Pin. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-3 This utility model provides a technical solution: an elevator safety clamp lifting mechanism, comprising:

[0028] A fixed base 1 is provided with at least two screws 2, each screw 2 is provided with a spring 4, and a locking nut 5 is provided at the end of the screw 2 away from the fixed base 1;

[0029] Movable seat 6, which is movably connected to the screw 2, the bottom of the spring 4 abuts against the movable seat 6, the movable seat 6 is provided with a tension wheel 7, and the movable seat 6 is provided with a rack 8;

[0030] The gear 9 is rotatably connected to the car 3 and meshes with the rack 8. A safety clamp lifting rod 10 is provided on the gear 9 and is connected to the safety clamp 11.

[0031] The movable seat 6 is equipped with a tension wheel mounting bracket 12, which is located between two screws 2. The tension wheel 7 is rotatably connected to the tension wheel mounting bracket 12. This facilitates the installation and removal of the tension wheel. In use, the wire ropes on both sides of the hoisting car are threaded through the tension wheel, keeping the spring in a tensioned state.

[0032] A connecting plate 13 is provided on the movable seat 6, and the rack 8 is disposed on the connecting plate 13. A clearance hole 14 is provided on the connecting plate 13, and the gear 9 is located in the clearance hole 14. The top of the connecting plate has an L-shaped plate body, which facilitates connection to the movable seat. The clearance hole provides space for the installation and movement of the gear 9, and facilitates engagement with the rack.

[0033] The connecting plate 13 is provided with a plurality of vertically arranged limiting elongated holes 15, and a limiting rod 16 is provided in each limiting elongated hole 15. The limiting rod 16 is fixedly connected to the car 3. This can limit the movement distance of the connecting plate.

[0034] A pin 17 is provided on the gear disc 9, and the safety clamp lifting rod 10 is connected to the pin 17. This facilitates the installation and removal of the safety clamp lifting rod.

[0035] Working principle: The fixed seat is fixedly connected to the car. The screw rod passes through the car and the fixed seat. The movable seat is movably connected to the screw rod. The bottom of the spring abuts against the movable seat, and the top of the spring abuts against the locking nut. The bottom of the screw rod is also equipped with a tightening nut, which can connect the fixed seat and the movable seat to the car. The steel wire ropes that lift the car on both sides are threaded on the tensioning wheel, so that the springs are in a taut state. During the operation of the elevator, the steel wire ropes that lift the car on both sides are tightened under the action of the car's gravity. If the car tilts to the side or one side of the steel wire rope breaks, the compression spring group located on one side of the car will rebound, and at the same time drive the rack and pinion lifting mechanism to move. The gear of the rack and pinion meshes with the rack and pinion, and the rack and pinion drive the rack and pinion to rotate. The pin on the rack and pinion is connected to the safety clamp lifting rod, so that the safety clamp moves and brakes the car on the guide rail.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An elevator safety clamp lifting mechanism, characterized in that, include: A fixing base, wherein at least two screws are provided on the fixing base, springs are provided on the screws, and a locking nut is provided at the end of the screws away from the fixing base; A movable seat is movably connected to the screw, the bottom of the spring abuts against the movable seat, a tension wheel is provided on the movable seat, and a rack is provided on the movable seat; A gear plate is rotatably connected to the car, and the gear plate meshes with the rack. A safety clamp lifting rod is provided on the gear plate, and the safety clamp lifting rod is connected to the safety clamp.

2. The elevator safety clamp lifting mechanism according to claim 1, characterized in that, The movable seat is provided with a tension wheel mounting bracket, which is located between two screws, and the tension wheel is rotatably connected to the tension wheel mounting bracket.

3. The elevator safety clamp lifting mechanism according to claim 1, characterized in that, A connecting plate is provided on the movable seat, and the rack is disposed on the connecting plate.

4. The elevator safety clamp lifting mechanism according to claim 3, characterized in that, The connecting plate is provided with a clearance hole, and the gear plate is located inside the clearance hole.

5. The elevator safety clamp lifting mechanism according to claim 3, characterized in that, The connecting plate is provided with a plurality of vertically arranged limiting elongated holes, and a limiting rod is provided in the limiting elongated holes. The limiting rod is fixedly connected to the car.

6. The elevator safety clamp lifting mechanism according to claim 1, characterized in that, A pin is provided on the gear plate, and the safety clamp lifting rod is connected to the pin.

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