CN213202003U

CN213202003U - Bidirectional braking safety tongs for elevator

Info

Publication number: CN213202003U
Application number: CN202021978967.4U
Authority: CN
Inventors: 邵辉; 庞智超; 陈娟娟
Original assignee: Tianjin Liye Electromechanical Equipment Engineering Co ltd
Current assignee: Tianjin Liye Electromechanical Equipment Engineering Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-05-14
Anticipated expiration: 2030-09-10

Abstract

The utility model relates to the field of safety tongs, and discloses a bidirectional braking safety tong for an elevator, the key points of the technical proposal are that the device comprises a box body, the inner walls of two opposite sides of the box body are respectively provided with a braking component, the car with the too high moving speed is braked by the upper brake part, the car with the too high moving speed is braked by the lower brake part, the safety gear can penetrate into the guide rail through the first penetrating part on the first wedge block and the second penetrating part on the second wedge block, be used for avoiding operating personnel to pierce through first rubber and second rubber and pierce through the contact of portion point portion with first portion and the second, in first sliding plate got into the third spout through sliding during emergency braking, guaranteed that first portion of impaling pierces and can pierce the guide rail smoothly after first rubber, in the second sliding plate got into the fourth spout through sliding during emergency braking, guaranteed that second portion of impaling pierces and can pierce the guide rail smoothly after the second rubber.

Description

Bidirectional braking safety tongs for elevator

Technical Field

The utility model relates to a safety tongs field, more specifically the two-way braking safety tongs for elevator that says so relates to.

Background

Safety tongs are the safety arrangement of elevator. The safety gear slides on the guide rail, and the elevator safety gear device is a safety device which emergently stops and clamps the elevator car on the guide rail under the operation of the speed limiter when the speed of the elevator exceeds the set limit speed of the elevator speed limiter or in the case of breakage and looseness of a suspension rope. It provides effective protection for the safe operation of the elevator and is generally installed on a car frame or a counterweight frame. The safety tongs are divided into one-way safety tongs and two-way safety tongs. After the safety gear is emergently braked, the clamping force of the safety gear to the guide rail is insufficient, so that the situation that the car moves downwards is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two-way braking safety tongs for elevator for guarantee behind the safety tongs emergency braking car, the contact between safety tongs and the guide rail is more firm, prevents that the car from moving down.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a bidirectional braking safety gear for an elevator comprises a box body, wherein a groove is formed in the box body, a guide rail is positioned in the groove, the length direction of the guide rail is parallel to the length direction of the box body, a transverse plate is fixedly connected between the inner walls of two opposite sides of the box body, the guide rail penetrates through the transverse plate, brake assemblies are respectively arranged on the inner walls of two opposite sides of the box body, the brake assemblies are divided into an upper brake part and a lower brake part by the transverse plate, the upper brake part comprises a first guide block, a first wedge block and a first power assembly, the first guide block is fixedly connected to the inner wall of the box body, a first sliding groove is formed in the first guide block, the first wedge block slides in the first sliding groove, the first power assembly is arranged on the top surface of the transverse plate, and the first power assembly is used for driving the first wedge block to slide, the lower braking part comprises a second guide block, a second wedge block and a second power assembly, the second guide block is fixedly connected to the inner wall of the box body, a second sliding groove is formed in the second guide block, the second wedge block slides in the second sliding groove, the second power assembly is arranged on the bottom surface of the transverse plate, and the second power assembly is used for driving the second wedge block to slide so as to enable the second wedge blocks on the two sides to be close to or far from each other;

two third sliding grooves which are oppositely arranged are respectively formed in one side face, close to the guide rail, of the first wedge block, first sliding plates are respectively connected in the two third sliding grooves in a sliding mode, a first compression spring is fixedly connected between the first sliding plates and the bottom wall face of the third sliding grooves, first rubber is fixedly connected between the two first sliding plates, a first puncturing part is arranged between the first rubber and the first wedge block, when the first power assembly drives the first wedge blocks on two sides to be close to each other, the first puncturing part punctures the guide rail, two fourth sliding grooves which are oppositely arranged are respectively formed in one side face, close to the guide rail, of the second wedge block, second sliding plates are respectively connected in the two fourth sliding grooves in a sliding mode, a second compression spring is fixedly connected between the second sliding plates and the bottom wall face of the fourth sliding grooves, and second rubber is fixedly connected between the two second sliding plates, and a second penetrating part is arranged between the second rubber and the second wedge block, and when the second power assembly drives the second wedge blocks at two sides to approach each other, the second penetrating part penetrates into the guide rail.

The utility model discloses in, it is preferred, first power component includes first telescopic cylinder, first telescopic cylinder fixed connection be in on the diaphragm top surface, just first telescopic cylinder output is in first voussoir bottom slides, second power component includes the telescopic cylinder of second, the telescopic cylinder fixed connection of second is in on the diaphragm bottom surface, the telescopic cylinder output of second is in the second voussoir top slides.

In the present invention, preferably, the first piercing part and the second piercing part respectively include a plurality of conical tips.

In the present invention, it is preferable that the distance between every adjacent two of the conical tips in the same group is set to be 10mm to 15 mm.

In the present invention, preferably, the material of the conical tip is high carbon steel.

The utility model discloses in, it is preferred, first guide block top with second guide block bottom difference fixedly connected with baffle, the baffle with box fixed connection.

In the present invention, preferably, the inclination angle of the first wedge inclined plane is the same as the inclination angle of the second wedge inclined plane.

The utility model has the advantages that: the utility model discloses a brake subassembly is used for realizing the two-way braking of safety tongs to elevator car, realize realizing the braking to the car that moves down the speed too fast through the upper brake portion, realize realizing the braking to the car that moves up the speed too fast through the lower brake portion, make safety tongs pierce into the guide rail through the first impaling portion on the first voussoir and the second impaling portion on the second voussoir, be used for avoiding operating personnel to contact with first impaling portion and second impaling portion point portion through first rubber and second rubber, guarantee the contact of first rubber and first impaling portion through the cooperation of first sliding plate and first compression spring, guarantee the contact of second rubber and second impaling portion through the cooperation of second sliding plate and second compression spring, first sliding plate passes into the third spout through the slip during emergency braking, guarantee that first impaling portion can pierce the guide rail smoothly after impaling first rubber, and during emergency braking, the second sliding plate enters the fourth sliding groove in a sliding manner, so that the second penetrating part can smoothly penetrate into the guide rail after penetrating through the second rubber.

Drawings

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

FIG. 2 is a schematic view of the full-section structure of the present invention;

FIG. 3 is a schematic view of a first wedge of the present invention;

fig. 4 is a schematic view of a full-section structure of the second wedge block of the present invention.

Reference numerals: 1. a box body; 3. a transverse plate; 4. a brake assembly; 5. an upper brake part; 51. a first guide block; 52. a first wedge; 53. a first power assembly; 54. a first telescopic cylinder; 6. a lower brake part; 61. a second guide block; 62. a second wedge; 63. a second power assembly; 64. a second telescopic cylinder; 7. a first chute; 8. a second chute; 9. a first piercing portion; 10. a second piercing portion; 11. a conical tip; 12. a first rubber; 13. a second rubber; 14. a first sliding plate; 15. a second sliding plate; 16. a baffle plate; 17. a third chute; 18. a fourth chute; 19. a first compression spring; 20. a second compression spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, the bidirectional braking safety gear for an elevator of this embodiment includes a box body 1, a groove is formed on the box body 1, a guide rail is located in the groove, the length direction of the guide rail is parallel to the length direction of the box body 1, a transverse plate 3 is fixedly connected between two opposite side inner walls of the box body 1, the guide rail penetrates through the transverse plate 3, brake assemblies 4 are respectively disposed on the two opposite side inner walls of the box body 1, the brake assemblies 4 are divided into an upper brake portion 5 and a lower brake portion 6 by the transverse plate 3, the upper brake portion 5 includes a first guide block 51, a first wedge block 52 and a first power assembly 53, the first power assembly 53 includes a first telescopic cylinder 54, the first telescopic cylinder 54 is fixedly connected to the top surface of the transverse plate 3, an output end of the first telescopic cylinder 54 slides on the bottom of the first wedge block 52, the first guide block 51 is fixedly connected to the inner wall of the box body 1, a first chute 7 is formed, the first wedge block 52 can slide in the first sliding groove 7, the first power assembly 53 is arranged on the top surface of the transverse plate 3, the first power assembly 53 is used for driving the first wedge block 52 to slide, so that the first wedge blocks 52 on two sides are close to or far away from each other, when the speed sensor detects that the descending speed of the elevator is too high, the first telescopic cylinder 54 in the first power assembly 53 starts to work, the output end of the first telescopic cylinder 54 extends upwards to drive the first wedge block 52 to move upwards, the lower braking part 6 comprises a second guide block 61, a second wedge block 62 and a second power assembly 63, the second power assembly 63 comprises a second telescopic cylinder 64, the second telescopic cylinder 64 is fixedly connected on the bottom surface of the transverse plate 3, the output end of the second telescopic cylinder 64 slides on the top of the second wedge block 62, the second guide block 61 is fixedly connected on the inner wall of the box body 1, the second sliding groove 8 is formed in the second guide block 61, second voussoir 62 can slide in second spout 8, and second power component 63 sets up on diaphragm 3 bottom surface, and second power component 63 is used for driving second voussoir 62 and slides to make the second voussoir 62 of both sides be close to each other or keep away from, when speed sensor detected the elevator rising speed at the excessive speed, the flexible cylinder 64 of second among the second power component 63 began work, and the flexible cylinder 64 output of second stretches out downwards, drives second voussoir 62 and moves down.

One side surface of the first wedge block 52 close to the guide rail is respectively provided with two third sliding grooves 17 which are oppositely arranged, the two third sliding grooves 17 are internally and respectively connected with a first sliding plate 14 in a sliding manner, a first compression spring 19 is fixedly connected between the first sliding plate 14 and the bottom wall surface of the third sliding groove 17, the first compression spring 19 is used for supporting the first sliding plate 14 and ensuring that the first rubber 12 is contacted with the tip part of the conical tip 11 so as to avoid an operator from touching the conical tip 11 in the installation process, the first rubber 12 is fixedly connected between the two first sliding plates 14, a first puncturing part 9 is arranged between the first rubber 12 and the first wedge block 52, when the first power assembly 53 drives the first wedge blocks 52 at two sides to mutually approach, the first puncturing part 9 punctures the guide rail, when the speed sensor detects that the lifting speed of the elevator is too high, the conical tip 11 arranged on the surface of the first wedge block 52 is contacted with the guide rail and then punctures the first rubber 12 and the guide rail in turn, when the conical cusp 11 pierces the guide rail to stop the elevator with the excessively fast descending speed, at this time, emergency braking of the elevator with the excessively fast descending speed is completed, two opposite fourth sliding grooves 18 are respectively formed in one side surface, close to the guide rail, of the second wedge block 62, a second sliding plate 15 is respectively connected in the two fourth sliding grooves 18 in a sliding manner, a second compression spring 20 is fixedly connected between the second sliding plate 15 and the bottom wall surface of the fourth sliding groove 18, the second compression spring 20 is used for supporting the second sliding plate 15 to ensure that the second rubber 13 is in contact with the tip of the conical cusp 11, so that an operator is prevented from touching the conical cusp 11 during installation, the second rubber 13 is fixedly connected between the two second sliding plates 15, a second puncturing part 10 is arranged between the second rubber 13 and the second wedge block 62, and when the second power assembly 52 drives the second wedge blocks 62 on both sides to approach each other, the second piercing part 10 pierces the guide rail, when the elevator rising speed detected by the speed sensor is too fast, the conical tip 11 arranged on the surface of the second wedge block 62 sequentially pierces the second rubber 13 and the guide rail after contacting the guide rail, and when the conical tip 11 pierces the guide rail, the elevator with the too fast rising speed stops moving, and at the moment, emergency braking of the elevator with the too fast rising speed is completed.

In this embodiment, referring to fig. 3 and 4, the first piercing part 9 and the second piercing part 10 respectively include a plurality of conical tips 11, and it is ensured that the first piercing part 9 and the second piercing part 10 can pierce into the guide rail smoothly, and the distance between every two adjacent conical tips 11 in the same group is set to be 10mm to 15mm, so as to ensure that when the conical tips 11 pierce through the first rubber 12 and the second rubber 13, the first rubber 12 and the second rubber 13 do not affect the effect of piercing the conical tips 11 into the guide rail, and the conical tips 11 are made of high carbon steel, so that the conical tips 11 can pierce into the guide rail smoothly.

In this embodiment, referring to fig. 1 and 2, the top of the first guide block 51 and the bottom of the second guide block 61 are respectively and fixedly connected with a baffle 16, and the baffle 16 is fixedly connected with the box body 1, so that the first guide block 51 and the second guide block 61 are more firmly fixed.

In this embodiment, as shown in fig. 3 and 4, the inclination angle of the inclined surface of the first wedge 52 is the same as the inclination angle of the inclined surface of the second wedge 62, and the same movement distance per unit time is ensured between the first wedge 52 and the second wedge 62.

The working principle is as follows: when the speed sensor detects that the descending speed of the elevator is too high, the first telescopic cylinder in the first power assembly starts to work, the output end of the first telescopic cylinder extends upwards to drive the first wedge block to move upwards, so that the conical tip arranged on the surface of the first wedge block contacts with the guide rail and then sequentially pricks the first rubber and the guide rail, when the conical tip pierces into the guide rail, the elevator with the over-high descending speed stops moving, the emergency braking of the elevator with the over-high descending speed is completed, when the speed sensor detects that the ascending speed of the elevator is too high, the second telescopic cylinder in the second power assembly starts to work, the output end of the second telescopic cylinder extends downwards to drive the second wedge block to move downwards, so that the conical tip arranged on the surface of the second wedge block contacts with the guide rail and then sequentially pricks the second rubber and the guide rail, and when the conical tip pierces into the guide rail, the elevator with the over-high ascending speed stops, at the moment, the emergency braking of the elevator with the over-high ascending speed is completed.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a two-way braking safety tongs for elevator, includes box (1), seted up flutedly on box (1), the guide rail is located in the recess, the length direction of guide rail with the length direction of box (1) is parallel, its characterized in that: a transverse plate (3) is fixedly connected between the inner walls of the two opposite sides of the box body (1), the guide rail (2) penetrates through the transverse plate (3), brake components (4) are respectively arranged on the inner walls of the two opposite sides of the box body (1), the transverse plate (3) divides the brake components (4) into an upper brake part (5) and a lower brake part (6), the upper brake part (5) comprises a first guide block (51), a first wedge block (52) and a first power component (53), the first guide block (51) is fixedly connected to the inner wall of the box body (1), a first sliding groove (7) is formed in the first guide block (51), the first wedge block (52) slides in the first sliding groove (7), the first power component (53) is arranged on the top surface of the transverse plate (3), and the first power component (53) is used for driving the first wedge block (52) to slide, the lower braking part (6) comprises a second guide block (61), a second wedge block (62) and a second power assembly (63), the second guide block (61) is fixedly connected to the inner wall of the box body (1), a second sliding groove (8) is formed in the second guide block (61), the second wedge block (62) slides in the second sliding groove (8), the second power assembly (63) is arranged on the bottom surface of the transverse plate (3), and the second power assembly (63) is used for driving the second wedge block (62) to slide so that the second wedge blocks (62) on the two sides are close to or far away from each other;

one side surface of the first wedge block (52) close to the guide rail (2) is respectively provided with two third sliding grooves (17) which are arranged oppositely, the two third sliding grooves (17) are respectively connected with a first sliding plate (14) in a sliding manner, a first compression spring (19) is fixedly connected between the first sliding plate (14) and the bottom wall surface of the third sliding groove (17), a first rubber (12) is fixedly connected between the two first sliding plates (14), a first puncturing part (9) is arranged between the first rubber (12) and the first wedge block (52), when the first wedge blocks (52) at two sides are driven by the first power assembly (53) to mutually close, the first puncturing part (9) punctures the guide rail, one side surface of the second wedge block (62) close to the guide rail (2) is respectively provided with two fourth sliding grooves (18) which are arranged oppositely, second sliding plates (15) are respectively connected in the two fourth sliding grooves (18) in a sliding mode, a second compression spring (20) is fixedly connected between the second sliding plates (15) and the bottom wall surface of the fourth sliding grooves (18), second rubber (13) is fixedly connected between the two second sliding plates (15), a second puncturing part (10) is arranged between the second rubber (13) and the second wedge blocks (62), and when the second power assembly (63) drives the second wedge blocks (62) on the two sides to be close to each other, the second puncturing part (10) punctures the guide rail.

2. A double-direction brake safety gear for elevators according to claim 1, characterized in that: first power component (53) includes first telescopic cylinder (54), first telescopic cylinder (54) fixed connection be in on diaphragm (3) top surface, just first telescopic cylinder (54) output is in first voussoir (52) bottom slides, second power component (63) includes second telescopic cylinder (64), second telescopic cylinder (64) fixed connection be in on diaphragm (3) bottom surface, second telescopic cylinder (64) output is in second voussoir (62) top slides.

3. A double-direction brake safety gear for elevators according to claim 1, characterized in that: the first piercing part (9) and the second piercing part (10) respectively comprise a plurality of conical cusps (11).

4. A double-direction brake safety gear for elevators according to claim 3, characterized in that: the distance between every two adjacent conical cusps (11) in the same group is set to be 10mm to 15 mm.

5. A double-direction brake safety gear for elevators according to claim 3, characterized in that: the conical tip (11) is made of high-carbon steel.

6. A double-direction brake safety gear for elevators according to claim 1, characterized in that: the top of the first guide block (51) and the bottom of the second guide block (61) are respectively fixedly connected with a baffle (16), and the baffle (16) is fixedly connected with the box body (1).

7. A double-direction brake safety gear for elevators according to claim 1, characterized in that: the inclined plane of the first wedge block (52) has the same inclined angle as the inclined plane of the second wedge block (62).