CN212387523U

CN212387523U - Elevator safety tongs and elevator

Info

Publication number: CN212387523U
Application number: CN202021465882.6U
Authority: CN
Inventors: 袁玉露; 王鸿云; 毕峰瑞
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-01-22
Anticipated expiration: 2030-07-20

Abstract

The invention discloses an elevator safety gear, which comprises a lifting rod, a main gear body and an auxiliary gear body, wherein the main gear body is arranged above the auxiliary gear body, two main wedge blocks are arranged in the main gear body, each main wedge block is connected with one lifting rod, and two auxiliary wedge blocks are arranged in the auxiliary gear body; the main wedge block is internally provided with a main containing groove, the opening of the main containing groove faces the guide rail, the main containing groove is internally provided with a roller, the roller part extends out of the main containing groove, the roller is wound with a traction rope, the main wedge block is provided with a through hole facing the corresponding auxiliary wedge block, and the head of the traction rope of each main wedge block passes through the through hole and is fixedly installed on the corresponding auxiliary wedge block. An elevator adopts above-mentioned elevator safety tongs. The invention has the advantages that: the auxiliary clamp body can be automatically started to generate braking force under the condition that the main clamp body fails, and the safety coefficient is improved. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.

Description

Elevator safety tongs and elevator

Technical Field

The utility model relates to an elevator safety tongs and elevator.

Background

The elevator is the transportation equipment that people are commonly used, and high-rise building all uses car elevator especially, and current car elevator all is equipped with safety tongs, but a guide rail generally corresponds and sets up a safety tongs, and when the elevator dropped down suddenly, the safety tongs can be drawn close each other and press from both sides tight guide rail, plays emergency braking's effect, nevertheless because only a safety tongs, in case can produce very big threat to the life of the person of taking in the elevator in failure.

Disclosure of Invention

The utility model aims at providing an elevator safety tongs and elevator can effectively solve current elevator and all have a pair safety tongs, the not enough problem of factor of safety.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: the elevator safety tongs comprise a lifting rod, a main tong body and an auxiliary tong body, wherein the main tong body is arranged above the auxiliary tong body, two main wedge blocks which move upwards along the vertical direction under the action of the lifting rod and mutually approach to a clamping guide rail are arranged in the main tong body, each main wedge block is connected with one lifting rod, and two auxiliary wedge blocks which move upwards along the vertical direction and mutually approach to the clamping guide rail are arranged in the auxiliary tong body;

it has main holding tank to open in the main voussoir, main holding tank opening is towards the guide rail, be equipped with the gyro wheel in the main holding tank, the gyro wheel part stretches out main holding tank, around having the haulage rope on the gyro wheel, it has the through-hole that the orientation corresponds vice voussoir to open on the main voussoir, every main voussoir the head of haulage rope passes through-hole fixed mounting is on the vice voussoir that corresponds.

Preferably, the main clamp body and the auxiliary clamp body are integrally arranged; or the main clamp body and the auxiliary clamp body are fixedly connected through bolts. The integrally arranged main clamp body and the auxiliary clamp body have good rigidity and connection stability, and the safety is higher; the split main clamp body and the split auxiliary clamp body are suitable for improving the existing equipment, the maintenance cost can be reduced, and the main clamp body or the auxiliary clamp body with a fault can be independently replaced.

Preferably, the internal main cavity room that is equipped with of main tong, the inside wall of main cavity room is close to the main cavity middle part from supreme down gradually and forms main spigot surface, be equipped with two in the main cavity room main voussoir, two leave the clearance that lets the guide rail pass through between the main voussoir, two main voussoir all is equipped with the main wedge inclined plane with main spigot surface looks adaptation. When the main wedge block moves under the action of upward force, the main guide surface is contacted with the inclined surface of the main wedge block, and the two main wedge blocks are extruded towards the middle to be close to each other and tightly hold the guide rail for braking.

Preferably, the surface of the main wedge opposite to the guide rail is a plane. The plane is easy to process, is beneficial to reducing the production cost and is convenient to install.

Preferably, the auxiliary clamp body is internally provided with an auxiliary cavity, the inner side wall of the auxiliary cavity is gradually close to the middle part of the auxiliary cavity from bottom to top to form an auxiliary guide surface, two auxiliary wedge blocks are arranged in the auxiliary cavity, a gap for the guide rail to pass through is also reserved between the two auxiliary wedge blocks, and the two auxiliary wedge blocks are both provided with auxiliary wedge inclined surfaces matched with the auxiliary guide surfaces. When the auxiliary wedge block moves upwards under the action of the main wedge block, the auxiliary guide surface contacts with the inclined surface of the auxiliary wedge block to extrude the two auxiliary wedge blocks towards the middle, so that the two auxiliary wedge blocks are close to each other to hold the guide rail tightly for braking.

Preferably, the surface of the auxiliary wedge block opposite to the guide rail is a plane.

Preferably, the lifting rod is fixedly connected with the top of the corresponding main wedge block. The lifting rod generates upward pulling force to pull the main wedge blocks to close.

Preferably, the side surface of the auxiliary chamber is open, and a baffle plate for closing the opening is arranged on the side surface of the auxiliary clamp body. The side opening, the convenience is inserted the fixed pin in the fixed orifices.

Preferably, the idler wheel comprises a wheel shaft, a rope winder and two rubber wheels, the wheel shaft is rotatably connected to the main wedge block, the rope winder is sleeved on the wheel shaft, the traction rope is wound on the rope winder, and the two rubber wheels are respectively fixed at two ends of the rope winder. Through the ropewinder, conveniently accomodate the haulage rope, fix the rubber tyer at the both ends of ropewinder simultaneously, prevent ropewinder and guide rail bump.

An elevator adopts above-mentioned elevator safety tongs.

Compared with the prior art, the utility model has the advantages that: through setting up vice pincers body, when main pincers body became invalid, the gyro wheel will continue to rotate with the guide rail contact to begin the rolling haulage rope, the haulage rope will stimulate vice voussoir upward movement, and the interval between two vice voussoirs reduces and embraces the guide rail tightly, produces the braking force, stops the car, and this device can the automatic start vice pincers body production braking force under the condition that main pincers body became invalid, has improved factor of safety. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.

Drawings

Fig. 1 is a structural view of the elevator safety gear of the utility model;

FIG. 2 is a schematic view of the structure A-A in FIG. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the embodiment of the elevator safety gear of the present invention, the elevator safety gear comprises a lifting rod 1, a main gear body 2 and an auxiliary gear body 3, wherein the main gear body 2 is disposed above the auxiliary gear body 3, two main wedges 5 moving upward along a vertical direction under the action of the lifting rod 1 and closing to a clamping rail 4 are disposed in the main gear body 2, each main wedge 5 is connected to one lifting rod 1, and two auxiliary wedges 6 moving upward along a vertical direction and closing to a clamping rail 4 are disposed in the auxiliary gear body 3;

it has main holding tank 20 to open in the main voussoir 5, main holding tank 20 opens towards guide rail 4, be equipped with gyro wheel 21 in the main holding tank, the gyro wheel part stretches out main holding tank, around there being haulage rope 22 on the gyro wheel 21, it has the through-hole 23 towards corresponding vice voussoir 6 to open on the main voussoir 5, every main voussoir 5 the head of haulage rope 22 passes through-hole 23 fixed mounting is on corresponding vice voussoir 6.

Through setting up vice pincers bodies, when main pincers body became invalid, the gyro wheel will continue to rotate with the guide rail contact to begin the rolling haulage rope 22, the head of haulage rope 22 will break away from in the fixed orifices 25, vice voussoir upward movement under spring 27's effect, the guide rail is held tightly in the reduction of the interval between two vice voussoirs, produces the braking force, stops the car brake, this device can the vice pincers body of automatic start production braking force under the condition that main pincers body became invalid, factor of safety has been improved. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.

Generally, it is preferable that the main clamp body 2 and the auxiliary clamp body 3 are manufactured integrally, so that the safety and the stability are relatively high, and of course, the main clamp body 2 and the auxiliary clamp body 3 can be separately arranged and connected through bolts, so that the old equipment is convenient to reform, and the maintenance cost is also favorably reduced.

To the structure of the main tong body 2, be equipped with main cavity room 7 in the main tong body 2, the inside wall of main cavity room 7 is close to formation main spigot surface 8 from supreme to main cavity room 7 middle part gradually down, be equipped with two in the main cavity room 7 main voussoir 5, two leave the clearance that lets guide rail 4 pass through between the main voussoir 5, two main voussoir 5 all is equipped with the main wedge inclined plane 9 with 8 looks adaptations of main spigot surface, main voussoir 5 is the plane with the relative face of guide rail 4, and it also can understand for main cavity room 7 is the four terrace with edges on only one inclined plane, and main voussoir 5 is the four terrace with edges on only one inclined plane, and the track of main voussoir 5 upward movement can also be controlled in the time of providing main voussoir 5 lateral force to such design, guarantees that main voussoir 5 can not take place the rotation when the motion, makes main vous. The gap between the two main wedges 5 allows the guide rail to pass through when the elevator normally moves, and when emergency braking is needed, the two main wedges are close to each other, and the gap gradually disappears.

Similarly, the structure of the auxiliary clamp body 3 is similar to that of the main clamp body 2, an auxiliary cavity 10 is arranged in the auxiliary clamp body 3, the inner side wall of the auxiliary cavity 10 is gradually close to the middle of the auxiliary cavity 10 from bottom to top to form an auxiliary guide surface 11, two auxiliary wedge blocks 6 are arranged in the auxiliary cavity 10, a gap for the guide rail 4 to pass through is also reserved between the two auxiliary wedge blocks 6, the two auxiliary wedge blocks 6 are both provided with auxiliary wedge inclined surfaces 12 matched with the auxiliary guide surfaces 11, and the surfaces of the auxiliary wedge blocks 6 opposite to the guide rail 4 are planes.

In the design, the lifting rod 1 is fixedly connected with the top of the corresponding main wedge block 5, and when the car falls, the lifting rod 1 moves upwards to pull the main wedge block 5 upwards, so that the main wedge block 5 clamps the guide rail 4 for braking.

The side of the auxiliary chamber is open, the side of the auxiliary clamp body is provided with a baffle 28 for sealing the opening, the fixing pin 26 at the head of the traction rope 22 needs to be inserted into the fixing hole 25, so that the opening is arranged for convenient installation, the opening is sealed by the baffle 28 after installation, and foreign matters are prevented from entering to influence the work of the auxiliary clamp body.

Because the traction rope 22 is wound on the roller, in order to protect the traction rope 22, the roller 21 comprises a wheel shaft 29, a rope winder 30 and two rubber wheels 31, the wheel shaft 29 is rotatably connected to the main wedge block, the rope winder 30 is sleeved on the wheel shaft 29, the traction rope 22 is wound on the rope winder 30, the two rubber wheels 31 are respectively fixed at two ends of the rope winder 30, the traction rope 22 is protected through the rubber wheels 31, the traction rope 22 is prevented from touching a guide rail, and meanwhile, friction force can be increased through the rubber wheels 31, so that the wheel shaft 29 can rotate as soon as possible to wind the traction rope 22.

The utility model also discloses an elevator adopts above-mentioned technical scheme's elevator safety tongs.

When the safety device is used, the main clamp body 2 is instantaneous safety clamp, the lifting rod 1 is installed, if the lift car falls, the lifting rod 1 pulls the main wedges 5 to move upwards, the two main wedges 5 are close to each other under the action of the main guide surface 8, and the guide rail 4 is clamped, in the process, the main wedges 5 move upwards and pull the auxiliary wedges 6 together, in order to ensure that the auxiliary wedges 6 are not contacted with the guide rail 4 when the main wedges 5 are braked and stopped, the distance between the two auxiliary wedges 6 can be slightly larger than the distance between the two main wedges 5, but when the main wedges 5 are not braked and stopped, the roller always contacts with the guide rail, the roller always rotates to wind the traction rope 22, so that the traction rope 22 pulls the auxiliary wedges 6 to move upwards, the auxiliary guide surface 11 interacts with the auxiliary wedge inclined surface 12, the distance between the auxiliary wedges 6 is gradually reduced, and finally the guide rail is held tightly, braking force is generated, the tissue car continuously falls, and the auxiliary clamp body 3 acts after the main clamp body 2 fails, so that the safety of the elevator is ensured.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. Elevator safety tongs, its characterized in that: the clamp comprises a lifting rod (1), a main clamp body (2) and an auxiliary clamp body (3), wherein the main clamp body (2) is arranged above the auxiliary clamp body (3), two main wedge blocks (5) which move upwards along the vertical direction under the action of the lifting rod (1) and mutually approach to a clamping guide rail (4) are arranged in the main clamp body (2), each main wedge block (5) is connected with one lifting rod (1), and two auxiliary wedge blocks (6) which move upwards along the vertical direction and mutually approach to the clamping guide rail (4) are arranged in the auxiliary clamp body (3);

it has main holding tank (20) to open in main voussoir (5), main holding tank (20) opening is towards guide rail (4), be equipped with gyro wheel (21) in the main holding tank, the gyro wheel part stretches out main holding tank, around haulage rope (22) on gyro wheel (21), it has through-hole (23) that the orientation corresponds vice voussoir to open on the main voussoir, every main voussoir (5) the head of haulage rope (22) passes through-hole fixed mounting is on vice voussoir (6) that correspond.

2. An elevator safety gear according to claim 1, characterized in that: the main clamp body (2) and the auxiliary clamp body (3) are integrally arranged; or the main clamp body (2) and the auxiliary clamp body (3) are fixedly connected through bolts.

3. An elevator safety gear according to claim 1, characterized in that: be equipped with main cavity room (7) in the main tong body (2), the inside wall of main cavity room (7) is from supreme being close to formation main spigot surface (8) to main cavity room (7) middle part gradually down, be equipped with two in main cavity room (7) main voussoir (5), two leave the clearance that lets guide rail (4) pass through between main voussoir (5), two main voussoir (5) all are equipped with main wedge inclined plane (9) with main spigot surface (8) looks adaptation.

4. An elevator safety gear according to claim 3, characterized in that: the surface of the main wedge block (5) opposite to the guide rail (4) is a plane.

5. An elevator safety gear according to claim 1, characterized in that: be equipped with vice cavity (10) in vice pincers body (3), the inside wall of vice cavity (10) is close to formation vice spigot surface (11) from supreme down to vice cavity (10) middle part gradually, be equipped with two in vice cavity (10) vice voussoir (6), two also leave the clearance that lets guide rail (4) pass through between vice voussoir (6), two vice voussoir (6) all are equipped with vice wedge inclined plane (12) with vice spigot surface (11) looks adaptation.

6. An elevator safety gear according to claim 5, characterized in that: the surface of the auxiliary wedge block (6) opposite to the guide rail (4) is a plane.

7. An elevator safety gear according to claim 1, characterized in that: the lifting rod (1) is fixedly connected with the top of the corresponding main wedge block (5).

8. An elevator safety gear according to claim 5, characterized in that: the side surface of the auxiliary chamber is opened, and the side surface of the auxiliary clamp body is provided with a baffle plate (28) for closing the opening.

9. An elevator safety gear according to claim 1, characterized in that: the roller (21) comprises a wheel shaft (29), a rope winder (30) and two rubber wheels (31), the wheel shaft (29) is rotatably connected to a main wedge block, the rope winder (30) is sleeved on the wheel shaft (29), the traction rope (22) is wound on the rope winder (30), and the two rubber wheels (31) are respectively fixed at two ends of the rope winder (30).

10. An elevator characterized in that: use of an elevator safety gear according to any of claims 1 to 9.