Rope clamp for elevator

Abstract

The present invention relates to the technical field of rope clamps, and discloses a rope clamp for an elevator, comprising: a first bracket; a third bracket, which is arranged on the outer side of the first bracket; an adjustment pad, which is arranged between the first bracket and the third bracket and is used to contact the first bracket and the third bracket; a starting mechanism, which is fixed to the outer surface of the first bracket; a resetting mechanism, which is fixed to the outer surface of the first bracket; and a limiting mechanism, which is arranged on the outer side of the first bracket, wherein the starting mechanism comprises: a motor, which is fixed to the outer surface of the first bracket; and a limiting hook, which movably penetrates the first bracket. The rope clamp for an elevator provided by the present invention can clamp a steel wire rope, and compared with an ordinary rope clamp, the rope clamp provided by the present invention has the advantages of being able to ensure the stability of the elevator restriction and being able to automatically reset.

Description

Technical Field

[0001] The present invention relates to the technical field of rope clamps, and in particular to a rope clamp for elevators. Background Art

[0002] For traditional elevators, a speed limiter must be used to monitor and control the car's downward overspeed at any time. However, with the use of elevators, people have found that the danger of the car overspeeding and hitting the top does exist. The reason is that when the car is unloaded or has a very small load, the weight on the counterweight side is greater than the car. Once the brake fails or the traction machine shaft, key, pin, etc. are broken, or the traction rope slips in the traction sheave due to severe wear, the car will overspeed upward. According to GB7588-2003, traction-driven elevators should be equipped with an upward overspeed protection device, which includes speed monitoring and deceleration elements, and should be able to detect the out-of-control speed of the upward car. When the car speed is greater than or equal to 115% of the rated speed of the elevator, the car should be stopped, or at least its speed should be reduced to the allowable use range of the counterweight buffer. This device should act on the car, counterweight, wire rope system (suspension rope or compensation rope) or traction wheel. When the device is activated, the electrical safety device should be activated or the control circuit should be de-energized, the motor should stop running, and the brake should be activated, so the rope clamp appears.

[0003] The existing rope clamp has the problem of poor reliability during use. When the elevator moves excessively or falls, the restriction on the elevator is unstable, causing the elevator to slide more and causing elevator accidents. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a rope clamp for an elevator, which has the advantages of being able to ensure the stability of the elevator restriction and being able to automatically reset, etc., and is used to solve the problem of poor reliability of the rope clamp in the prior art during use. When the elevator moves excessively or falls, the restriction on the elevator is relatively unstable, causing the elevator to slide more, resulting in elevator accidents.

[0006] (II) Technical solution

[0007] The present invention provides the following technical solution: a rope clamp for an elevator, comprising: a first bracket; a third bracket, arranged on the outside of the first bracket; an adjustment pad, arranged between the first bracket and the third bracket, for contacting the first bracket and the third bracket; a starting mechanism, fixed to the outer surface of the first bracket; a reset mechanism, fixed to the outer surface of the first bracket; and a limiting mechanism, arranged on the outside of the first bracket.

[0008] The rope clamp for an elevator provided by the present invention can clamp a steel wire rope, and compared with an ordinary rope clamp, the rope clamp provided by the present invention has the advantages of being able to ensure the stability of the elevator restriction and being able to automatically reset, etc., and is used to solve the problem of poor reliability of rope clamps in the prior art during use. When the elevator moves excessively or falls, the restriction on the elevator is relatively unstable, resulting in a large amount of elevator sliding, which may cause elevator accidents.

[0009] In a possible embodiment, the starting mechanism includes: a motor fixed to the outer surface of the first bracket; a limit hook movably passing through the first bracket; a trigger spring arranged between the limit hook and the first bracket for contacting the limit hook and the first bracket; and an electromagnet fixed to the outer surface of the limit hook.

[0010] In a possible implementation, the starting mechanism further includes: a fixing plate fixed to the outer surface of the first bracket; a needle plate fixed to the outer surface of the fixing plate; and a steel wire rope disposed outside the first bracket.

[0011] In a possible implementation, the limit hook can move relative to the first bracket, and the electromagnet can be attracted to the first bracket after being energized, the wire rope can move relative to the first bracket, and the limit hook can swing relative to the first bracket.

[0012] By setting up a starting mechanism, the wire rope can be restricted when the motion detection system detects that the speed of the elevator is overspeeding when it is rising or descending, thereby ensuring the safety of the elevator during use, avoiding the danger of falling off the ladder or the elevator being out of control, and ensuring stability when triggered, further ensuring the safety of people inside the elevator.

[0013] In a possible implementation, the reset mechanism includes: a first switch fixed to the outer surface of the fixed plate; a switch pin arranged on the outer side of the first switch for controlling the first switch; a second switch fixed to the outer surface of the first bracket; and a push claw fixed to the output end of the motor.

[0014] In a possible implementation manner, the reset mechanism further includes: a reset frame fixed to the outside of the first bracket; a reset bolt movably threadedly connected to the reset frame; and a tension spring fixed to the inside of the reset frame.

[0015] In a possible implementation manner, the switch pin can move relative to the first switch, and the pusher claw can rotate relative to the first bracket driven by the motor.

[0016] By setting up a reset mechanism, it is easy to reset the wire rope after it is restricted, thereby avoiding the need for cumbersome adjustment of the motor's rope clamp, thereby ensuring that the elevator can be put into use quickly, and making it easier for operators to detect the elevator, further eliminating the need for maintenance personnel to frequently enter the elevator shaft.

[0017] In a possible embodiment, the limiting mechanism includes: a small slide plate, movably arranged on one side of the fixed plate; a sliding plate, movably arranged on the other side of the fixed plate; a first friction plate, fixed on one side of the sliding plate; and a second fixed plate, fixed on the inner side of the first bracket.

[0018] In a possible implementation manner, the small slide plate is connected to the sliding plate via threads, and both the small slide plate and the sliding plate are movable relative to the fixed plate, and the sliding plate is in contact with the needle roller plate.

[0019] By setting a limit mechanism, the steel wire rope that pulls the elevator car can be restricted, so that when the elevator overspeeds, the movement of the elevator car can be limited, and the stability during the restriction can be guaranteed, thereby preventing the elevator from sliding a certain distance after being restricted, further ensuring the safety of the elevator during use.

[0020] Compared with the prior art, the present invention provides a rope clamp for an elevator, which has the following beneficial effects:

[0021] 1. The present invention sets a starting mechanism, which can limit the wire rope when the movement detection system of the elevator detects that the speed of the elevator is overspeeding when it is ascending or descending, thereby ensuring the safety of the elevator during use, avoiding the danger of falling or the elevator being out of control, and ensuring the stability when triggered, further ensuring the safety of the people inside the elevator.

[0022] 2. The present invention provides a reset mechanism, which can facilitate resetting after the wire rope is restricted, thereby avoiding the need for cumbersome adjustment of the rope clamp of the motor, thereby ensuring that the elevator can be put into use quickly, and also making it easy for operators to detect the elevator, and further eliminating the need for maintenance personnel to frequently enter the elevator shaft.

[0023] 3. The present invention can limit the steel wire rope that pulls the elevator car by setting a limit mechanism, so that when the elevator is overspeeding, the movement of the elevator car can be limited, and the stability during the limitation can be ensured, thereby preventing the elevator from sliding for a distance after being restricted, and further ensuring the safety of the elevator during use.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the overall structure of a rope gripper for an elevator provided by the present invention;

[0026] Figure 2 A partial schematic diagram of a positioning hook of a rope gripper for an elevator provided by the present invention;

[0027] Figure 3 A partial schematic diagram of a small sliding plate of a rope gripper for an elevator provided by the present invention;

[0028] Figure 4 A partial schematic diagram of a motor of a rope gripper for an elevator provided by the present invention;

[0029] Figure 5 A partial schematic diagram of a steel wire rope of a rope gripper for an elevator provided by the present invention;

[0030] Figure 6 The present invention is a partial schematic diagram of a reset frame of a rope gripper for an elevator provided by the present invention.

[0031] Wherein: 1 first bracket, 2 third bracket, 3 adjustment pad, 21 motor, 22 electromagnet, 23 trigger spring, 24 limit hook, 25 fixing plate, 26 needle plate, 27 wire rope, 31 first switch, 32 switch pin, 33 second switch, 34 pusher claw, 35 reset frame, 36 reset bolt, 37 tension spring, 41 small slide plate, 42 sliding plate, 43 first friction plate, 44 second friction plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 1-6 As shown, the present invention provides a rope clamp for an elevator, comprising: a first bracket 1; a third bracket 2, arranged on the outer side of the first bracket 1; an adjustment pad 3, arranged between the first bracket 1 and the third bracket 2, for contacting the first bracket 1 and the third bracket 2; a movement detection system, fixed to the outer surface of the first bracket 1, the movement detection system is an existing system of the elevator and is not described here; a starting mechanism, fixed to the outer surface of the first bracket 1; a reset mechanism, fixed to the outer surface of the first bracket 1; and a limit mechanism, arranged on the outer side of the first bracket 1.

[0037] The rope clamp for an elevator provided by the present invention can clamp the wire rope 27. Compared with ordinary rope clamps, the rope clamp provided by the present invention has the advantages of being able to ensure the stability of the elevator restriction and being able to automatically reset. It is used to solve the problem of poor reliability of rope clamps in the prior art during use. When the elevator moves excessively or falls, the restriction on the elevator is relatively unstable, resulting in a large amount of elevator sliding, which may cause elevator accidents.

[0038] In a possible embodiment, the starting mechanism includes: a motor 21, fixed to the outer surface of the first bracket 1; a limit hook 24, movably passing through the first bracket 1; a trigger spring 23, arranged between the limit hook 24 and the first bracket 1, for contacting the limit hook 24 and the first bracket 1; an electromagnet 22, fixed to the outer surface of the limit hook 24.

[0039] In a possible implementation, the starting mechanism further includes: a fixing plate 25 fixed to the outer surface of the first bracket 1 ; a needle plate 26 fixed to the outer surface of the fixing plate 25 ; and a steel wire rope 27 disposed outside the first bracket 1 .

[0040] In a possible implementation, the limit hook 24 can move relative to the first bracket 1, and the electromagnet 22 can be attracted to the first bracket 1 after being energized, the wire rope 27 can move relative to the first bracket 1, and the limit hook 24 can swing relative to the first bracket 1.

[0041] By setting up a starting mechanism, when the mobile detection system 4 detects that the speed of the elevator is overspeeding when it is rising or descending, the wire rope 27 can be restricted, thereby ensuring the safety of the elevator during use, avoiding the danger of falling off the ladder or the elevator being out of control, and ensuring stability when triggered, further ensuring the safety of people inside the elevator.

[0042] In a possible embodiment, the reset mechanism includes: a first switch 31, fixed to the outer surface of the fixing plate 25; a switch pin 32, arranged on the outer side of the first switch 31, for controlling the first switch 31; a second switch 33, fixed to the outer surface of the first bracket 1; and a push claw 34, fixed to the output end of the motor 21.

[0043] In a possible implementation, the reset mechanism further includes: a reset frame 35 fixed to the outside of the first bracket 1 ; a reset bolt 36 movably threadedly connected to the reset frame 35 ; and a tension spring 37 fixed to the inside of the reset frame 35 .

[0044] In a possible implementation, the switch pin 32 can move relative to the first switch 31 , and the finger 34 can rotate relative to the first bracket 1 driven by the motor 21 .

[0045] By setting up a reset mechanism, it is possible to easily reset the wire rope 27 after it is restricted, thereby avoiding the need for cumbersome adjustment of the rope clamp of the motor 21, thereby ensuring that the elevator can be put into use quickly, and making it easier for operators to detect the elevator, and further eliminating the need for maintenance personnel to frequently enter the elevator shaft.

[0046] In a possible embodiment, the limiting mechanism includes: a small slide plate 41, movably disposed on one side of the fixed plate 25; a sliding plate 42, movably disposed on the other side of the fixed plate 25; a first friction plate 43, fixed on one side of the sliding plate 42; and a second fixed plate 25, fixed on the inner side of the first bracket 1.

[0047] In a possible implementation, the small slide plate 41 is connected to the sliding plate 42 via threads, and both the small slide plate 41 and the sliding plate 42 are movable relative to the fixed plate 25 , and the sliding plate 42 is in contact with the needle roller plate 26 .

[0048] By setting a limit mechanism, the steel wire rope 27 that pulls the elevator car can be restricted, so that when the elevator is overspeeding, the movement of the elevator car can be limited, and the stability during the restriction can be ensured, thereby preventing the elevator from sliding a certain distance after being restricted, further ensuring the safety of the elevator during use.

[0049] In addition, the present invention also provides a method for using a rope clamp for an elevator. When using the rope clamp, first fix the small slide plate 41 on the reset frame 35 with a reset bolt 36, then disassemble the third bracket 2 of the rope clamp, pay attention to the number of adjustment pads 3, restore when reinstalling, assemble the first bracket 1 and the third bracket 2 on both sides of the traction wire rope 27, and then loosen the reset special bolt to clamp the rope clamp at a suitable position on the wire rope 27;

[0050] When the power is off or the power is cut off, the mobile detection system disconnects the power supply of the rope clamp triggering electromagnet 22; the electromagnet 22 is released, and the trigger spring 23 pushes the limit hook 24 to unhook the small sliding plate 42; the small sliding plate 42, the sliding plate 42 and the first friction plate 43 start to move and contact the traction wire rope 27 under the action of the tension spring 37 and the tension spring 37, and the rope clamp is pre-acted;

[0051] After the movement detection system detects that the elevator moves unexpectedly or exceeds the speed limit when going up, the power supply of the rope clamp triggering electromagnet 22 is disconnected; the electromagnet 22 is released, and the trigger spring 23 pushes the limit hook 24 to unhook the small sliding plate 42; the small sliding plate 42, the sliding plate 42 and the first friction plate 43 start to move and contact the traction wire rope 27 under the action of the tension spring 37, and under the combined action of the tension of the tension spring 37 and the friction of the traction wire rope 27, the sliding plate 42 and the first friction plate 43 continue to move along the oblique fixed plate 25. Due to the action of the oblique fixed plate 25, the sliding plate 42, the first friction plate 43 and the second friction plate 44, the friction force increases with the increase of the moving distance until the traction wire rope 27 is clamped and the car stops;

[0052] When the elevator is powered on in a non-maintenance state, the movement detection system first supplies power to the rope clamp motor 21 for forward rotation, and pulls the small slide plate 41, the sliding plate 42, and the first friction plate 43 through the claw to move to the first switch 31 and then stop, and then supplies power to the trigger electromagnet 22 to push the limit hook 24 to hook the small slide plate 41; then the movement detection system supplies power to the motor 21 for reverse rotation, and the claw reverses until the second switch 33 is actuated and then the power is cut off and stopped, and the rope clamp is reset.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0054] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0055] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A rope gripper for an elevator, characterized in that: include: A first bracket (1); A third bracket (2) is arranged outside the first bracket (1); An adjustment pad (3) is arranged between the first bracket (1) and the third bracket (2) and is used for contacting the first bracket (1) and the third bracket (2); A mobile detection system, fixed to the outer surface of the first bracket (1); A starting mechanism fixed to the outer surface of the first bracket (1); A reset mechanism, fixed to the outer surface of the first bracket (1); as well as A limiting mechanism, arranged on the outside of the first bracket (1); The launch organization includes: A motor (21) is fixed to the outer surface of the first bracket (1); A limiting hook (24) movably passing through the first bracket (1); A trigger spring (23) is disposed between the limit hook (24) and the first bracket (1) and is used to contact the limit hook (24) and the first bracket (1); An electromagnet (22) fixed to the outer surface of the limiting hook (24); A fixing plate (25) fixed to the outer surface of the first bracket (1); A needle roller plate (26) fixed to the outer surface of the fixed plate (25); A steel wire rope (27) is arranged outside the first bracket (1); The limit hook (24) is movable relative to the first bracket (1), and the electromagnet (22) is capable of being attracted to the first bracket (1) after being energized, the steel wire rope (27) is capable of being movable relative to the first bracket (1), and the limit hook (24) is capable of swinging relative to the first bracket (1); The reset mechanism comprises: A first switch (31) is fixed to the outer surface of the fixing plate (25); A switch pin (32), arranged on the outside of the first switch (31), and used for controlling the first switch (31); A second switch (33) is fixed to the outer surface of the first bracket (1); The finger (34) is fixed to the output end of the motor (21).

2. A rope gripper for an elevator according to claim 1, characterized in that: The reset mechanism also includes: A reset frame (35) fixed to the outside of the first frame (1); A reset bolt (36) movably threadedly connected to the reset frame (35); A tension spring (37) is fixed to the inner side of the reset frame (35).

3. A rope gripper for an elevator according to claim 2, characterized in that: The switch pin (32) can move relative to the first switch (31), and the push claw (34) can rotate relative to the first bracket (1) under the drive of the motor (21).

4. A rope gripper for an elevator according to claim 3, characterized in that: The limiting mechanism includes: A small sliding plate (41) movably disposed on one side of the fixed plate (25); A sliding plate (42) movably disposed on the other side of the fixed plate (25); A first friction plate (43) fixed to one side of the sliding plate (42); The second friction plate (44) is fixed to the inner side of the first bracket (1).

5. A rope gripper for an elevator according to claim 4, characterized in that: The small slide plate (41) is connected to the sliding plate (42) via threads, and both the small slide plate (41) and the sliding plate (42) are movable relative to the fixed plate (25), and the sliding plate (42) is in contact with the needle roller plate (26).

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