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Elevator rope gripper

A rope gripper and elevator technology, used in elevators, hoisting devices, transportation and packaging, etc., can solve the problems of wear, increase elevator costs, shorten the life of rope pressing plates and wire ropes, etc., and achieve the effect of reducing maintenance costs.

Active Publication Date: 2018-04-03
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rope grippers tend to act faster than brakes, causing the pressure plate to press against the still-moving wire rope, causing severe wear and tear on both
Frequent and unnecessary actions will inevitably shorten the life of the rope pressing plate and wire rope, increasing the cost of the elevator in use
In addition, when the rope clamp cooperates with the safety gear to prevent the car from moving unexpectedly, the power failure of the elevator may also trigger unnecessary actions of the safety gear

Method used

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  • Elevator rope gripper
  • Elevator rope gripper
  • Elevator rope gripper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Elevator rope grippers, such as figure 1 , figure 2 , image 3 As shown, it includes: a rope pressing plate 1, a driving rod 2, a blocking rod 3, an electromagnetic coil 4, and a spring 5;

[0039] The drive rod 2 includes a thin section 21, a transition section 22, and a thick section 23 that are coaxially and fixedly connected together from front to back in sequence;

[0040] Both the thin section 21 and the thick section 23 are cylindrical; the outer diameter of the thin section 21 is smaller than the outer diameter of the thick section 23;

[0041] The outer diameter of the transition section 22 gradually increases from front to back;

[0042] The rope pressing plate 1 is fixed on the front end of the thin section 21;

[0043] The blocking rod 3 is arranged in a direction perpendicular to the driving rod 2, and the bottom of the blocking rod 3 is against the spring 5; when the elevator rope clamp does not trigger the rope clamping action, the blocking rod 3 is ...

Embodiment 2

[0051] Based on the elevator rope gripper of Embodiment 1, the top of the blocking rod 3 is provided with a roller 31;

[0052] When the elevator is energized, the electromagnetic coil 4 is energized to generate electromagnetic force to move the blocking rod 3 to the bottom end and compress the spring 5, the top roller 31 of the blocking rod 3 is away from the axis of the driving rod 2, and the top roller 31 of the blocking rod 3 reaches the The distance between the drive rod 2 axes is greater than or equal to R 3 ;

[0053] When the elevator is powered off, the electromagnetic coil 4 is powered off and does not generate electromagnetic force, and the elastic force of the spring 5 makes the blocking rod 3 protrude close to the axis of the driving rod 2, and when it is completely protruded, the roller 31 reaches the driving rod 2 Axis distance greater than or equal to R 1 and less than or equal to (R 1 +R 3 ) / 2.

[0054] In the elevator rope gripper of Embodiment 2, when t...

Embodiment 3

[0056] Based on the first embodiment, the elevator rope clamp also includes a feedback contact 6;

[0057] The feedback contact 6 is rigidly connected with the blocking rod 3 .

[0058] The feedback contact 6 is disconnected when the blocking rod 3 moves to the bottom and compresses the spring 5, and is connected when the elastic force of the spring 5 makes the blocking rod 3 protrude; or,

[0059] The feedback contact 6 is connected when the blocking rod 3 moves to the bottom and compresses the spring 5 , and is disconnected when the elastic force of the spring 5 makes the blocking rod 3 protrude out.

[0060] In the elevator rope gripper of the third embodiment, the feedback contact 6 is in the off or on state respectively when the elevator is powered on and off, and the elevator can judge that the rope gripper is faulty.

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PUM

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Abstract

The invention discloses an elevator rope gripper which comprises a rope pressing plate, a driving rod, a stopping rod, an electromagnetic coil and a spring. The driving rod comprises a thin section, atransition section and a thick section which are coaxially fixedly connected in sequence from front to back. The thin section and the thick section are each in a cylinder shape, and the outer diameter of the transition section gradually becomes large from front to back. The rope pressing plate is fixed to the front end of the thin section, the stopping rod and the driving rod are arranged in an orthogonal mode, and the bottom end of the stopping rod abuts against the spring and is fixedly sleeved with the electromagnetic coil. When an elevator is powered on, the electromagnetic coil is powered on, the stopping rod moves to the bottom end and compresses the spring, and the top end of the stopping rod gets away from the axis of the driving rod. When the elevator is powered off, the electromagnetic coil is powered off, and through elastic force of the spring, the stopping rod pops out and gets close to the axis of the driving rod. According to the elevator rope gripper, a steel wire ropeand the rope pressing plate cannot be worn, safety tongs in linkage with the elevator rope gripper can also not be accidentally triggered to act, and the maintenance cost of the elevator during use is reduced accordingly.

Description

technical field [0001] The invention relates to elevator safety protection technology, in particular to an elevator rope clamp with power-off delay action. Background technique [0002] With the continuous deepening of the urbanization process, the demand for elevators is constantly expanding, people use elevators more and more frequently, and pay more attention to the safety of elevators. Rope clamps, which are widely used in elevator safety protection such as upward overspeed protection, prevention of accidental movement of the car, and prevention of brake failure, have gradually become a must-have safety component for elevators. For the sake of safety, the general elevator rope grip adopts the power-off trigger mode-when the elevator is powered off, the rope grip will act immediately. Rope clamps tend to act faster than brakes, causing the pressure plate to press against the still-moving wire rope, causing severe wear and tear on both. Frequent and unnecessary actions w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/24B66D5/30
CPCB66B5/24B66D5/30
Inventor 刘文晋张磊宋杰
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD