Safety tongs of traction elevator

Abstract

The safety tongs of the traction elevator comprise a tongs body, the top of the tongs body is fixedly connected with a fixing frame, the two sides of the inner wall of the fixing frame are each provided with a clamping mechanism, and each clamping mechanism comprises a positioning rod which is fixedly inserted into the top of the inner wall of the fixing frame in a penetrating mode; the rotating components are arranged at two ends of the positioning rod; the wear-resisting column is fixed to the bottom of the rotating assembly, a clamping mechanism is arranged at the bottom of the fixing frame, and a driving mechanism is arranged on the inner side of the fixing frame. Through the arrangement mode that the fixing frame, the clamping mechanism and the clamping mechanism are matched, when an elevator has an emergency accident, the elevator suddenly descends, so that a rotating rod and a clamping rod move upwards under the influence of inertia, the clamping rod is clamped into a clamping groove, meanwhile, a wear-resisting column clamps a guide rail, and the guide rail can be clamped by the wear-resisting column except for the brake of the clamp body. The wear-resisting columns can conduct auxiliary braking operation on the guide rails, the braking safety of the traction elevator is improved, errors are reduced, and the braking stability of the elevator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of elevator safety gear, especially relates to a safety gear of traction elevator. BACKGROUND

[0002] The safety gear is the safety protection device of elevator, and the safety gear device is composed of a safety gear operating mechanism and a safety gear body, namely, when the safety gear mechanism acts, the electrical mechanism is first touched to disconnect the elevator safety circuit to stop the elevator, and if the brake cannot stop, the safety gear will further act to stop the elevator on the guide rail.

[0003] The application number 201821559449.1 discloses a durable safety gear of traction elevator, which is arranged on both sides of the guide rail of the elevator and comprises a clamp body for clamping the guide rail to stop the movement of the guide rail and a control assembly for controlling the clamp body, one side of the clamp body close to the guide rail is provided with a trapezoidal friction pad with the width increasing from top to bottom along the guide rail direction, the friction pad comprises a thickening layer and a friction increasing layer in sequence from the clamp body to the guide rail direction, the friction increasing layer comprises a plurality of friction blocks and compensation friction blocks arranged at intervals, the width of the compensation friction block is smaller than that of the friction block adjacent thereto, and a reinforcing rib is arranged between the compensation friction block and the friction block. When the above-mentioned safety gear clamps the guide rail by the magnetic attraction of the electromagnet, the lower part of the friction pad first contacts the guide rail, so that the friction force acting on the lower part is greater than that acting on the upper part, thereby preventing the contact area between the lower part and the guide rail from being reduced due to wear and reducing the stopping effect of the safety gear. However, the existing safety gear only clamps the guide rail by two friction pads, the stopping mode of the safety gear is single, and the magnetic attraction is prone to failure under the influence of other electromagnets, thereby affecting the stopping stability of the elevator. SUMMARY

[0004] The utility model aims at providing a safety gear of traction elevator to solve the problems in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a safety gear of traction elevator, comprising: a clamp body, a fixed frame is fixedly connected to the top of the clamp body, clamping mechanisms are arranged on the inner walls of the fixed frame on both sides, and the clamping mechanism comprises:

[0006] A positioning rod is fixedly inserted into the inner wall top of the fixed frame.

[0007] A rotating assembly is arranged at both ends of the positioning rod.

[0008] A wear-resistant column is fixed to the bottom of the rotating assembly, a clamping mechanism is arranged at the bottom of the fixed frame, and a driving mechanism is arranged on the inner side of the fixed frame.

[0009] Preferably, the rotating assembly comprises:

[0010] A rotating rod is fixedly inserted into the end of the positioning rod;

[0011] A clamping groove is formed in the middle of the lower surface of the rotating rod;

[0012] A fixing ring is fixed to the middle of the upper surface of the rotating rod;

[0013] A compression spring is fixed between the rotating rod and the fixed frame;

[0014] An arc-shaped rod is sleeved in the inner cavity of the compression spring.

[0015] Preferably, the top end of the arc-shaped rod is connected with the top of the inner wall of the adjacent fixed frame, and the arc-shaped rod is slidably inserted into the middle of the adjacent rotating rod.

[0016] Preferably, the clamping mechanism comprises:

[0017] A fixed block is fixed to the bottom of the fixed frame;

[0018] A clamping rod is rotatably connected with the bottom of the fixed block, and the clamping rod is movably clamped in the inner cavity of the clamping groove;

[0019] A tension spring is fixed to the bottom of the clamping rod;

[0020] A limiting rod is sleeved in the inner cavity of the tension spring, and the limiting rod is slidably inserted into the middle of the clamping rod.

[0021] Preferably, the bottom of the tension spring is fixedly connected with the top of the pliers body, the top of the limiting rod is fixedly connected with the top of the fixed block, and the bottom of the limiting rod is fixedly connected with the top of the pliers body.

[0022] Preferably, the driving mechanism comprises:

[0023] A cylinder is fixedly inserted into the middle of the fixed frame;

[0024] A top plate is fixed to the top of the cylinder;

[0025] A plurality of movable ropes are respectively fixed to the two sides of the top plate, and the bottom of the movable rope is fixedly inserted into the fixing ring.

[0026] Preferably, the two sides of the top of the fixed frame are provided with connecting holes, the movable rope is slidably connected with the inner cavity of the connecting hole, and the two sides of the inner wall of the connecting hole are embedded with balls.

[0027] The technical effects and advantages of the utility model are as follows:

[0028] The utility model discloses a fixed frame, clamping mechanism and the setting mode of clamping mechanism cooperation, when elevator emergency, elevator suddenly drops, and the inertia of rotating rod and card bar is moved upward, and its card bar is clamped into the card slot, and the wear -resisting column is clamped to the guide rail, and its except the brake of tongs body, the wear -resisting column can be assisted to the guide rail and stop operating, improve the safety of traction elevator and stop, reduce the failure, improve the stability of elevator and stop. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is the whole structure schematic diagram of the utility model.

[0030] Fig. 2 It is the fixed frame place side surface section structure schematic diagram of the utility model.

[0031] Fig. 3 It is the fixed frame place front view section structure schematic diagram of the utility model.

[0032] In the drawing: 1, tongs body;2, fixed frame;3, clamping mechanism;31, positioning rod;32, rotating assembly;321, rotating rod;322, card slot;323, fixed ring;324, compression spring;325, arc rod;33, wear -resisting column;4, clamping mechanism;41, fixed block;42, card bar;43, tension spring;44, limit rod;5, drive mechanism;51, air cylinder;52, top plate;53, movable rope;6, connecting hole;7, ball bearing. DETAILED DESCRIPTION

[0033] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0034] The utility model provides a kind of safety tongs of traction elevator as Figs. 1-3 As shown in formula:

[0035] Tongs body 1, tongs body 1 is existing safety tongs body, can be stopped in safe environment to the guide rail of elevator, and the top of tongs body 1 is fixedly connected with fixed frame 2, and the front of fixed frame 2 is equipped with sliding slot, so that its guide rail can be stably slid in the middle of fixed frame 2;

[0036] Further, the inner wall of the fixed frame 2 is provided with clamping mechanism 3 on both sides, the clamping mechanism 3 comprises: positioning rod 31, rotating assembly 32 and wear-resistant column 33, the positioning rod 31 is fixedly inserted into the top of the inner wall of the fixed frame 2, the rotating assembly 32 is arranged at both ends of the positioning rod 31, the wear-resistant column 33 is fixed to the bottom of the rotating assembly 32, the wear-resistant column 33 can be in close friction with the outer wall of the guide rail, through the extrusion of the wear-resistant column 33 and the outer wall of the guide rail, the guide rail is conveniently stopped;

[0037] Specifically, the rotating assembly 32 comprises: rotating rod 321, clamping groove 322, fixed ring 323, compression spring 324 and arc-shaped rod 325, the rotating rod 321 is fixedly inserted into the end of the positioning rod 31, the wear-resistant column 33 is fixed to the bottom of the rotating rod 321, the clamping groove 322 is opened in the middle of the lower surface of the rotating rod 321, the fixed ring 323 is fixed to the middle of the upper surface of the rotating rod 321, the compression spring 324 is fixed between the rotating rod 321 and the fixed frame 2, the arc-shaped rod 325 is sleeved in the inner cavity of the compression spring 324, the top end of the arc-shaped rod 325 is connected with the top of the inner wall of the adjacent fixed frame 2, the arc-shaped rod 325 is slidingly inserted into the middle of the adjacent rotating rod 321, through the arc-shaped rod 325, the stability of the rotating of the rotating rod 321 and the stability of the use of the compression spring 324 are improved, and when the elevator falls, the rotating rod 321 rotates upward due to inertia, so that the wear-resistant column 33 at one end of the rotating rod 321 extrudes the guide rail, thereby facilitating the stopping operation of the elevator;

[0038] Further, the bottom of the fixed frame 2 is provided with clamping mechanism 4, the clamping mechanism 4 comprises: fixed block 41, clamping rod 42, tension spring 43 and limiting rod 44, the fixed block 41 is fixed to the bottom of the fixed frame 2, the bottom of the fixed block 41 is fixedly connected with the upper surface of the body 1, the clamping rod 42 is rotatably connected with the bottom of the fixed block 41, the clamping rod 42 is movably clamped in the inner cavity of the clamping groove 322, the tension spring 43 is fixed to the bottom of the clamping rod 42, the bottom of the tension spring 43 is fixedly connected with the top of the body 1, the limiting rod 44 is sleeved in the inner cavity of the tension spring 43, the limiting rod 44 is slidingly inserted into the middle of the clamping rod 42, the top of the limiting rod 44 is fixedly connected with the top of the fixed block 41, the bottom of the limiting rod 44 is fixedly connected with the top of the body 1, through the limiting rod 44, the stability of the use of the tension spring 43 is improved, and the rotation of the clamping rod 42 is stable, when the elevator suddenly falls, the clamping rod 42 rotates counterclockwise due to inertia, the tension spring 43 is pulled, and the clamping rod 42 can be clamped into the inner cavity of the clamping groove 322, so that the wear-resistant column 33 can press the guide rail for a long time, the stopping stability is improved, the double stopping of the body 1 is facilitated, and the safety of the elevator stopping is improved;

[0039] Further, the inner side of the fixed frame 2 is provided with a driving mechanism 5, the driving mechanism 5 comprises: a cylinder 51, a top plate 52 and a plurality of movable ropes 53, the cylinder 51 is fixedly inserted in the middle of the fixed frame 2, the top plate 52 is fixed to the top of the cylinder 51, the plurality of movable ropes 53 are respectively fixed to the two sides of the top plate 52, the bottom of the movable rope 53 is fixedly inserted and connected with the fixed ring 323, through the driving of the cylinder 51, the movable rope 53 can pull the rotating rod 321, the wear-resistant column 33 can be extruded to the guide rail direction, the artificial stopping operation of the elevator is facilitated, and through the continuous pulling of the rotating rod 321, the clamping rod 42 can slide out of the inner cavity of the clamping groove 322, the stopping of the wear-resistant column 33 to the guide rail is released, the two sides of the top of the fixed frame 2 are both provided with a connecting hole 6, the movable rope 53 is slidably connected with the inner cavity of the connecting hole 6, the two sides of the inner wall of the connecting hole 6 are both embedded with a ball 7, the stability of the sliding of the movable rope 53 is facilitated, and the stability of the use of the safety clamp is improved.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have described, and do not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A safety brake for a traction elevator, comprising: A clamp body (1), characterized in that: a fixed frame (2) is fixedly connected to the top of the clamp body (1), and clamping mechanisms (3) are provided on both sides of the inner wall of the fixed frame (2), the clamping mechanisms (3) comprising: Positioning rod (31), which is fixedly inserted into the top of the inner wall of the fixed frame (2); A rotating assembly (32) is disposed at both ends of the positioning rod (31); Wear-resistant column (33) is fixed to the bottom of rotating assembly (32). The bottom of fixed frame (2) is provided with snap-fit ​​mechanism (4). The inner side of fixed frame (2) is provided with driving mechanism (5).

2. The safety clamp for a traction elevator according to claim 1, characterized in that, The rotating assembly (32) includes: A rotating rod (321) is fixedly inserted into the end of a positioning rod (31); A slot (322) is provided in the middle of the lower surface of the rotating rod (321); A fixing ring (323) is fixed to the middle part of the upper surface of the rotating rod (321); Compression spring (324), which is fixed between rotating rod (321) and fixed frame (2); An arc-shaped rod (325) is sleeved inside the compression spring (324).

3. The safety clamp for a traction elevator according to claim 2, characterized in that, The top of the arc-shaped rod (325) is connected to the top of the inner wall of the adjacent fixed frame (2), and the arc-shaped rod (325) is slidably interlocked with the middle of the adjacent rotating rod (321).

4. The safety clamp for a traction elevator according to claim 2, characterized in that, The latching mechanism (4) includes: A fixing block (41) is fixed to the bottom of the fixing frame (2); The lever (42) is rotatably connected to the bottom of the fixing block (41), and the lever (42) is movably engaged with the inner cavity of the slot (322); A tension spring (43) is fixed to the bottom of the lever (42); A limiting rod (44) is sleeved in the inner cavity of the tension spring (43), and the limiting rod (44) is slidably inserted into the middle of the locking rod (42).

5. A safety clamp for a traction elevator according to claim 4, characterized in that, The bottom of the tension spring (43) is fixedly connected to the top of the clamp body (1), the top of the limiting rod (44) is fixedly connected to the top of the fixing block (41), and the bottom of the limiting rod (44) is fixedly connected to the top of the clamp body (1).

6. A safety clamp for a traction elevator according to claim 2, characterized in that, The drive mechanism (5) includes: Cylinder (51), wherein the cylinder (51) is fixedly inserted into the middle of the fixed frame (2); Top plate (52), said top plate (52) is fixed to the top of cylinder (51); Multiple movable ropes (53) are fixed to both sides of the top plate (52), and the bottom of each movable rope (53) is fixedly interlocked with a fixed ring (323).

7. A safety clamp for a traction elevator according to claim 6, characterized in that, The fixed frame (2) has connecting holes (6) on both sides of its top. The movable rope (53) is slidably connected to the inner cavity of the connecting hole (6). Ball bearings (7) are embedded on both sides of the inner wall of the connecting hole (6).

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