CN210193117U

CN210193117U - Elevator safety tongs

Info

Publication number: CN210193117U
Application number: CN201921083449.3U
Authority: CN
Inventors: Fei Jia; 贾飞; Junpeng Tang; 汤均鹏; Jianlun Gong; 龚健伦; Yi Li; 李益
Original assignee: GAUNGZHOU HUADU GENERAL GROUP CO Ltd
Current assignee: GAUNGZHOU HUADU GENERAL GROUP CO Ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-03-27
Anticipated expiration: 2029-07-11

Abstract

The elevator safety gear comprises a safety gear base, a bracket is arranged on the safety gear base, two symmetrically arranged fixed wedge blocks are arranged between the top of the bracket and the safety gear base, the wide end of the fixed wedge block is in sliding fit with the top of the bracket, the narrow end of the fixed wedge block is in sliding fit with the safety gear base, a sliding wedge block is arranged on the fixed wedge block, a lifting device which can act on the sliding wedge block to slide up and down along the fixed wedge block is arranged at the top of the bracket, a U-shaped spring leaf is arranged on the safety gear base, a stop block is respectively arranged at the top of the bracket and the position corresponding to the fixed wedge block, the stop block is positioned above the sliding wedge block, the fixed wedge block is positioned between the stop block and the inner wall surface of the U-shaped spring piece, this safety tongs's buffer structure adopts U type spring leaf, and shock-absorbing structure retrencies more, and it is also more convenient simultaneously to install and dismantle.

Description

Elevator safety tongs

Technical Field

The utility model relates to an elevator equipment part field, concretely relates to elevator safety tongs.

Background

Safety tongs are an important safety part in elevator installations, and are used for emergency stopping and holding of the car on the elevator guide rails in the event of serious faults such as overspeed, rope breakage, etc. The safety gear can play an important role in safety guarantee when the elevator is overspeed and out of control, so to speak, the elevator becomes an essential transportation tool for high-rise buildings just because of the development of the safety gear.

Most of the current safety tongs have complex structures, complex damping structures, inconvenient installation and inconvenient production and manufacture.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an elevator safety tongs that structural design is reasonable, the structure is retrencied, convenient assembling.

In order to solve the technical problem, the utility model discloses a safety tongs base is equipped with the support on the safety tongs base, is equipped with the fixed voussoir that two symmetries set up between the top of support and safety tongs base, the wide end of fixed voussoir and the top sliding fit of support, the narrow end and the safety tongs base sliding fit of fixed voussoir are equipped with the slip voussoir on fixed voussoir, are equipped with at the top of support and can act on the gliding draw gear of slip voussoir along fixed voussoir from top to bottom, still are equipped with a U type spring leaf on the safety tongs base, respectively are equipped with a dog at the top of support and the position that corresponds and be equipped with fixed voussoir, and the dog is in the top of slip voussoir, and fixed voussoir is between.

As a further improvement of the utility model, be equipped with the stay bolt spare of the bottom contact of a plurality of and U type spring leaf on the safety tongs base, the lateral part is equipped with the connecting bolt spare of being connected with fixed voussoir respectively about the support, and wherein the connecting bolt spare passes U type spring leaf and rather than sliding fit.

As a further improvement, the utility model is equipped with the needle row on the inclined plane of fixed voussoir, and the inclined plane and the needle row contact of slip voussoir respectively are equipped with a baffle in the left and right sides of fixed voussoir, the slip voussoir is in between two baffles, the baffle is equipped with a kink, kink and the side sliding fit of slip voussoir.

As a further improvement, the lifting device comprises a lifting rod, the lifting rod slides to pass through the top of the support, the lower end of the lifting rod is provided with a linkage plate, the sliding wedge block is provided with a fixed pin, and the linkage plate is provided with a chute matched with the fixed pin.

As a further improvement of the utility model, the stop dog is fixed at the top of the bracket through a bolt piece.

As a further improvement, the U-shaped spring piece is in a retracted state, and the inner wall surface of the U-shaped spring piece is tightly attached to the sliding wedge.

As a further improvement of the present invention, a through groove for the elevator guide rail to pass is provided at the top of the bracket, and the through groove is located between the two sliding wedges.

The utility model has the advantages that: this safety tongs's buffer structure adopts U type spring leaf, and shock-absorbing structure retrencies more, and it is also more convenient simultaneously to install and dismantle.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 2.

Fig. 4 is an internal structure view in the downward direction of the present invention.

Detailed Description

Fig. 1 to 4 illustrate an embodiment of the present invention:

comprises a safety gear base 1, a bracket 2 is arranged on the safety gear base 1, two fixed wedge blocks 3 which are symmetrically arranged are arranged between the top of the bracket 2 and the safety gear base 1, the wide end of each fixed wedge block 3 is in sliding fit with the top of the bracket 2, the narrow end of each fixed wedge block 3 is in sliding fit with the safety gear base 1, a needle roller row 4 is arranged on the inclined surface of each fixed wedge block 3, a baffle plate 5 is respectively arranged on the left side and the right side of each fixed wedge block 3, a sliding wedge block 6 is arranged between the two baffle plates 5, the inclined surface of each sliding wedge block 6 is in contact with the needle roller row 4, each baffle plate 5 is provided with a bending part which is in sliding fit with the side edge of the sliding wedge block 6, a U-shaped spring leaf 7 is also arranged between the top of the bracket 2 and the safety gear base 1, a plurality of supporting bolt pieces 8 which are in contact with the bottom of the U-shaped spring leaf 7 are arranged on the safety gear base 1, wherein the connecting bolt piece 9 passes through the U-shaped spring piece 7 and is in sliding fit with the U-shaped spring piece 7, the U-shaped spring piece 7 is in a retracted state, the inner wall surface of the U-shaped spring piece 7 is tightly attached to the sliding wedge 6, the positions of the top of the bracket 2, which are correspondingly provided with the fixed wedges 3, are respectively provided with a stop block 10, the stop blocks 10 are fixed at the top of the bracket 2 through the bolt pieces, the stop blocks 10 are positioned above the sliding wedge 6, the fixed wedges 3 are positioned between the stop blocks 10 and the inner wall surface of the U-shaped spring piece 7, the top of the bracket 2 is provided with a through groove 11 for the elevator guide rail to pass through, the through groove 11 is positioned between the two sliding wedges 6, the top of the bracket 2 is provided with a lifting device which can act on the sliding wedge 6 to slide up and down along the fixed wedge 3, the lifting device comprises a lifting rod 12, the, a fixed pin 14 is arranged on the sliding wedge block 6, a sliding groove matched with the fixed pin 14 is arranged on the linkage plate 13, and a limit sleeve 15 is arranged at the upper end of the lifting rod 12.

The utility model discloses a theory of operation: under the abnormal state of elevator, when the car descends fast and the speed reaches the action speed that the overspeed governor set for, the overspeed governor lifts linkage plate 13 upwards through lifting rod 12, drives simultaneously that slip voussoir 6 moves up, and slip voussoir 6 passes through needle bar 4 and upwards moves along the inclined plane of last fixed voussoir 3, and until the clamping face of slip voussoir 6 and elevator guide rail contact, two slip voussoir 6 firmly grasp elevator guide rail, make elevator car stop motion to guarantee the safety of passenger and article in the elevator car. The U-shaped spring piece 7 can effectively absorb the acting force of the sliding wedge 6 on the fixed wedge 3 in the moving process of the sliding wedge 6, and the buffering effect is achieved. This safety tongs's buffer structure adopts U type spring leaf 7, and shock-absorbing structure retrencies more, adopts the structure of back bolt spare 8 and connecting bolt spare 9 to fix, installs and dismantles convenient and fast. The stop block 10 is fixed at the top of the bracket 2 through a bolt piece, and is convenient and quick to mount and dismount.

Claims

1. The utility model provides an elevator safety gear, includes the safety gear base, its characterized in that: the safety gear comprises a safety gear base, a bracket, two fixed wedges, a sliding wedge, a lifting device and a U-shaped spring piece, wherein the bracket is arranged on the safety gear base, the two fixed wedges are symmetrically arranged between the top of the bracket and the safety gear base, the wide end of each fixed wedge is in sliding fit with the top of the bracket, the narrow end of each fixed wedge is in sliding fit with the safety gear base, the sliding wedge is arranged on each fixed wedge, the lifting device capable of acting on the sliding wedge to slide up and down along the fixed wedges is arranged at the top of the bracket, the U-shaped spring piece is further arranged on the safety gear base, a stop block is respectively arranged at the top of the bracket and at the position where the fixed wedges are correspondingly arranged.

2. An elevator safety gear according to claim 1, characterized in that: the safety gear base is provided with a plurality of supporting bolt pieces which are contacted with the bottom of the U-shaped spring piece, the left side part and the right side part of the bracket are respectively provided with connecting bolt pieces which are connected with the fixed wedge block, and the connecting bolt pieces penetrate through the U-shaped spring piece and are in sliding fit with the U-shaped spring piece.

3. An elevator safety gear according to claim 1, characterized in that: the inclined plane of the fixed wedge block is provided with a needle row, the inclined plane of the sliding wedge block is contacted with the needle row, the left side and the right side of the fixed wedge block are respectively provided with a baffle plate, the sliding wedge block is positioned between the two baffle plates, and the baffle plate is provided with a bending part which is in sliding fit with the side edge of the sliding wedge block.

4. An elevator safety gear according to claim 1, characterized in that: the lifting device comprises a lifting rod, the lifting rod penetrates through the top of the support in a sliding mode, a linkage plate is arranged at the lower end of the lifting rod, a fixing pin is arranged on the sliding wedge block, and a sliding groove matched with the fixing pin is formed in the linkage plate.

5. An elevator safety gear according to claim 1, characterized in that: the stop block is fixed at the top of the bracket through a bolt piece.

6. An elevator safety gear according to claim 1, characterized in that: the U-shaped spring piece is in a retracted state, and the inner wall surface of the U-shaped spring piece is tightly attached to the sliding wedge.

7. An elevator safety gear according to claim 1, characterized in that: a through groove for the elevator guide rail to pass through is formed in the top of the support and is located between the two sliding wedges.