Integrated safety tongs lifting and resetting structure

Abstract

The utility model aims to provide the integrated lifting and resetting structure for the safety tongs, which is simple in structure, good in braking effect and capable of effectively reducing the production cost. The mounting seat is arranged on the front side of the main body frame, the shifting fork is rotatably connected to the rear side of the main body frame, the two wedge blocks are in sliding fit with the mounting seat, a push rod is formed on one side of the main body frame, and the push rod is connected with an external reset driving device. The first end of the shifting fork is connected with the push rod, the bottom of each wedge block is provided with a connecting piece, and the second end of the shifting fork is provided with a bayonet matched with the corresponding connecting piece in a limiting mode. The elevator safety tongs are applied to the technical field of elevator safety tongs.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of elevator safety gear, especially relates to an integrated safety gear lifting and resetting structure. BACKGROUND

[0002] The safety gear is an important safety component of elevator equipment, and can play an important role in safety protection when the elevator overspeeds and loses control. The action of the safety gear device is to make the rope clamping jaw clamp the speed governor rope through the action of the speed governor, and as the car runs downward, the speed governor rope pulls the safety gear connecting rod mechanism, the safety gear connecting mechanism acts, drives the safety gear brake element to contact the guide rail, and makes the safety gear on both sides of the guide rail clamp on the guide rail at the same time, so that the car is stopped.

[0003] For example, the Chinese utility model patent with publication number CN212387522U has a plier body cavity inside the support frame, and the elevator guide rail passes through the middle of the support frame. The left plier body and the right plier body are symmetrically arranged on the left and right sides of the elevator guide rail. The left plier body includes a fixed wedge block, a sliding wedge block is arranged on the first inclined surface of the fixed wedge block, a brake block is arranged on the side of the sliding wedge block facing the elevator guide rail, a push plate is arranged below the sliding wedge block, a first elastic element is arranged between the push plate and the lower end of the plier body cavity, a reset pulling element of the push plate extends downward out of the plier body cavity, a through groove is formed in the side wall of the plier body cavity, a limiting piece is slidably arranged in the through groove, the inner end of the limiting piece is pressed above the push plate and a first through hole is arranged in the limiting piece, a second through hole is arranged in the push plate, a positioning rod is arranged in the first through hole and the second through hole, the outer end of the limiting piece is located outside the plier body cavity and a second elastic element is arranged between the limiting piece and the support frame, the sliding wedge block is connected with a lifting chain, and the lifting chain and the positioning rod are connected with a control lever. The structure for realizing the braking and resetting process in the utility model patent is complex, the components are many, the production cost is increased, and the complex braking structure increases the difficulty of daily maintenance. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of overcoming the deficiencies of the prior art, and provides an integrated safety gear lifting and resetting structure which is simple in structure, effective in braking effect, and effective in reducing production cost.

[0005] The technical scheme adopted by the utility model is as follows: the utility model comprises a main body frame, a mounting seat arranged on the front side of the main body frame, a shift fork rotatably connected to the rear side of the main body frame, and two wedge blocks in sliding cooperation with the mounting seat, a push rod is formed on the rear side of the main body frame, the first end of the shift fork is connected with the push rod, a connecting piece is arranged on the bottom of each wedge block, and a bayonet is arranged on the second end of the shift fork and in limiting cooperation with the corresponding connecting piece.

[0006] Further, the front side of the main frame is formed with a mounting cavity, the mounting seat is provided with a first guide and a second guide, the first guide and the second guide are symmetrically arranged in the mounting cavity, and the first guide and the second guide are in sliding fit with the corresponding wedge block.

[0007] Further, the connecting piece comprises a fixing screw and a limiting sheet, the fixing screw is fixedly connected with the bottom of the wedge block, and the limiting sheet is fixedly connected with one end of the fixing screw and is in limiting fit with the bayonet.

[0008] Further, the first end of the shift fork is formed with a connecting sheet, the middle part of the connecting sheet is provided with a slot for the push rod to pass through, and one side of the slot is provided with a locking hole.

[0009] Further, the push rod comprises a rotating rod, a transmission arm and a connecting block, the rotating rod is rotationally connected with the rear side of the main frame, one end of the transmission arm is fixedly connected with the rotating rod, and the other end of the transmission arm is fixedly connected with the connecting.

[0010] Further, the second end of the shift fork is fixedly connected with a protruding block, the front end of the protruding block is provided with a protruding block, and each bayonet is correspondingly arranged at the front end of the corresponding protruding block.

[0011] The utility model discloses the beneficial effect is: because the utility model discloses the shift fork cooperation rotatable push rod structure, when the safety tongs does not act, the wedge block will move upward owing to car vibration or oil mud influence, the bayonet of shift fork will hook the connecting piece, prevent the wedge block and continue to move upward, prevent the occurrence of safety tongs misoperation, when the safety tongs brake, the second end of shift fork is moved upward through the push rod, and the wedge block is pushed up and moves to realize safety tongs brake, when the safety tongs needs to reset, the push rod rotation drives shift fork reset, and the bayonet structure hooks the connecting piece, and the wedge block is pulled down and moves, realizes safety tongs reset, and the overall structure is optimized, and the component quantity is few and simple structure, and the cost reduction of part manufacturing, installation, maintenance and the like. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the first structure schematic drawing of the utility model,

[0013] Figure 2 It is the second structure schematic drawing of the utility model,

[0014] Figure 3 It is the structure schematic drawing of the shift fork and wedge block cooperation of the utility model,

[0015] Figure 4 It is the structure schematic drawing of the shift fork of the utility model,

[0016] Figure 5Is the structure schematic diagram of the utility model in non-action state;

[0017] Figure 6 Is the structure schematic diagram of the utility model in braking state.

[0018] In the drawing: 1, main body frame;11, installation cavity;2, mounting seat;21, first guide;22, second guide;3, shift fork;31, connecting piece;32, slot;33, locking hole;34, protruding block;35, protruding block;4, wedge;5, push rod;51, rotating rod;52, transmission arm;53, connecting block;6, connecting piece;61, fixing screw;62, limiting piece;7, bayonet. DETAILED DESCRIPTION

[0019] As Figures 1 to 6 shown, in the embodiment, the utility model includes main body frame 1, set up in the mounting seat 2 of main body frame 1 front side, rotationally connected in the shift fork 3 of main body frame 1 rear side and two wedge 4 with the sliding fit of mounting seat 2, the rear side of main body frame 1 is formed with push rod 5, the first end of shift fork 3 is connected with push rod 5, and the bottom of each wedge 4 is provided with connecting piece 6, and the second end of shift fork 3 is provided with bayonet 7 corresponding with the limiting cooperation of corresponding connecting piece 6;Adopt the structure of shift fork 3 cooperation rotatable push rod 5, when safety tongs is not in action, wedge 4 will move upward due to car vibration or oil mud influence, and the bayonet 7 of shift fork 3 will hook connecting piece 6, prevent wedge 4 from continuing to move upward, prevent the occurrence of safety tongs misoperation;When safety tongs is braked, the second end of shift fork 3 is moved upward by push rod 5, and wedge 4 is pushed to move upward to realize safety tongs braking;When safety tongs needs to reset, push rod 5 rotates and drives shift fork 3 to reset, and connecting piece 6 is hooked by bayonet 7 structure, and wedge 4 is moved downward, to realize safety tongs reset, the overall structure is optimized, the number of components is less and the structure is simple, and each item cost such as part manufacturing, installation, maintenance is reduced.

[0020] In the embodiment, the front side of main body frame 1 is formed with installation cavity 11, the mounting seat 2 is provided with first guide 21 and second guide 22, the first guide 21 and the second guide 22 are symmetrically arranged in the installation cavity 11, the first guide 21 and the second guide 22 are correspondingly slidably connected with the wedge 4, the first guide 21 and the second guide 22 are provided with sliding grooves matched with the wedge 4, and each sliding groove is inclinedly arranged, so that the wedge 4 gradually approaches when moving from bottom to top, to press the slide rail between the two wedge 4 and realize braking.

[0021] In the embodiment, the connecting piece 6 comprises a fixing screw 61 and a limiting sheet 62, the fixing screw 61 is fixedly connected with the bottom of the wedge block 4, the limiting sheet 62 is fixedly connected with one end of the fixing screw 61, the limiting sheet 62 is limitedly matched with the bayonet 7, the structure of the limiting sheet 62 is matched with the bayonet 7 of the shift fork 3, the upward movement of the wedge block 4 caused by the vibration of the car or the influence of the oil mud is effectively avoided, the misoperation is avoided, the shift fork 3 is rotated to pull the limiting sheet 62 to move downward when resetting, so that the unlocking of the two wedge blocks 4 is realized.

[0022] In the embodiment, the first end of the shift fork 3 is formed with a connecting sheet 31, the middle part of the connecting sheet 31 is provided with a slot 32 for the push rod 5 to pass through, and one side of the slot 32 is provided with a locking hole 33.

[0023] In the embodiment, the push rod 5 comprises a rotating rod 51, a transmission arm 52 and a connecting block 53, the rotating rod 51 is rotationally connected with the rear side of the main frame 1, one end of the transmission arm 52 is fixedly connected with the rotating rod 51, the other end of the transmission arm 52 is fixedly connected with the connecting block 53, and the connecting block 53 is connected with the movable end of an external driving device, for transmitting kinetic energy, the rotating rod 51 is a square structure, and is matched with the slot 32 of the connecting sheet 31 of the shift fork 3 to transmit the rotary torque.

[0024] In the embodiment, the second end of the shift fork 3 is fixedly connected with an extending block 34, the front end of the extending block 34 is provided with a protruding block 35, each bayonet 7 is correspondingly arranged at the front end of the corresponding protruding block 35, and the extending block 34 and the shift fork 3 are fixed by welding.

[0025] The working principle of the utility model is as follows:

[0026] When the safety clamp is not in action, the wedge block 4 moves upward due to the vibration of the car or the influence of the oil mud, the bayonet 7 of the shift fork 3 hooks the connecting piece 6, prevents the wedge block 4 from continuing to move upward, and prevents the misoperation of the safety clamp from occurring;

[0027] When the safety clamp is braked, the second end of the shift fork 3 is moved upward by the push rod 5, the wedge block 4 is pushed to move upward, and the safety clamp is braked;

[0028] When the safety clamp needs to be reset, the shift fork 3 is reset by the rotation of the push rod 5, the connecting piece 6 is hooked by the structure of the bayonet 7, the wedge block 4 is pulled to move downward, and the safety clamp is reset.

[0029] Although the embodiments of the utility model are described in actual schemes, but do not constitute the limitation to the meaning of the utility model, for the person skilled in the art, according to the modification of the embodiments and the combination with other schemes in the present specification, it is obvious.

Claims

1. An integrated safety shutoff lifting and reset structure, characterized by: The utility model provides a kind of frame for the installation of the rearview mirror, including main body frame (1), the mounting seat (2) of being arranged in the front side of the main body frame (1), the shift fork (3) of being rotatably connected in the rear side of the main body frame (1) and two wedge blocks (4) with the sliding fit of the mounting seat (2), the rear side of the main body frame (1) is formed with push rod (5), the first end of the shift fork (3) is connected with the push rod (5), the bottom of each wedge block (4) is provided with connecting piece (6), the second end of the shift fork (3) is provided with the bayonet (7) corresponding with the limiting cooperation of corresponding connecting piece (6).

2. An integrated safety shackle lifting and resetting structure according to claim 1, wherein: The front side of the main body frame (1) is formed with mounting cavity (11), the mounting seat (2) is provided with first guide (21) and second guide (22), the first guide (21) and the second guide (22) are symmetrically arranged in the mounting cavity (11), the first guide (21) and the second guide (22) are corresponding with the sliding fit of corresponding wedge block (4).

3. The one-piece safety shackle lifting and resetting structure of claim 1, wherein: The connecting piece (6) includes fixed screw (61) and limiting sheet (62), the fixed screw (61) is fixedly connected with the bottom of the wedge block (4), the limiting sheet (62) is fixedly connected to one end of the fixed screw (61), and the limiting sheet (62) is limitedly matched with the bayonet (7).

4. The one-piece safety shackle lifting and resetting structure of claim 1, wherein: The first end of the shift fork (3) is formed with connecting piece (31), the middle part of the connecting piece (31) is provided with slot (32) for the push rod (5) to pass through, one side of the slot (32) is provided with locking hole (33).

5. An integrated safety shackle lifting and resetting structure according to claim 4, wherein: The push rod (5) includes rotating rod (51), transmission arm (52) and connecting block (53), the rotating rod (51) is rotatably connected with the rear side of the main body frame (1), one end of the transmission arm (52) is fixedly connected with the rotating rod (51), the other end of the transmission arm (52) is fixedly connected with the connecting.

6. An integrated safety shackle lifting and resetting structure according to claim 1, wherein: The second end of the shift fork (3) is fixedly connected with extension block (34), the front end of the extension block (34) is provided with protruding block (35), each bayonet (7) is correspondingly arranged at the front end of the corresponding protruding block (35).

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