CN210619909U

CN210619909U - Elevator buffer device

Info

Publication number: CN210619909U
Application number: CN201921150937.1U
Authority: CN
Inventors: 余承鹏; 邱军; 李韵涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-05-26
Anticipated expiration: 2029-07-22

Abstract

The utility model relates to the field of elevator safety, in particular to an elevator buffer device, which comprises a damper, a first pressing plate and a second pressing plate; one end of the damper is fixedly arranged on the sliding rail on the inner side of the vertical frame, and the other end of the damper is fixedly connected with a fixing ring on one side of the elevator car body; the lower end of the elevator car body is provided with a first pressing plate, the first pressing plate is connected with a second pressing plate through a limiting rod, and a compression spring is arranged on the part of the limiting rod between the first pressing plate and the second pressing plate; elevator buffer structural design reasonable, the practicality is strong, it not only can guarantee through connecting rod and pulley mating reaction that the elevator railway carriage or compartment body that descends fast does not take place the skew in the in-process position that descends, but also can realize cubic buffering effect through the combined action of attenuator, first clamp plate and gag lever post, second clamp plate and buffering pneumatic cylinder, guarantees that the personnel of taking inside the elevator railway carriage or compartment body does not receive the injury when the elevator railway carriage or compartment body sharply descends.

Description

Elevator buffer device

Technical Field

The utility model relates to an elevator safety field specifically is an elevator buffer.

Background

With the rapid development of high-rise buildings in China, the elevator is used as an effective delivery vehicle, and the application and popularization range of the elevator is wider and wider. However, in recent years, elevator accidents happen, and serious casualties are caused, one reason for which is that the design of the conventional elevator pit buffer device is not reasonable enough. When the elevator car is out of control and unexpected, the car can't stop and directly falls to the elevator well pit from the eminence at a high speed, strikes the buffer device arranged at the pit, therefore, the design of the buffer device is good and bad, and the life safety of people is directly related.

Patent application document No. CN203127952U relates to a multi-stage elevator buffer device, which is provided with a lifting cylinder, when an elevator is out of control and directly falls, the first support plate and the second support plate can be quickly jacked up, the buffer distance is increased, and meanwhile, one-stage buffer is completed, and the impact force of a lift car is reduced; then, through the cooperation of the buffer spring arranged on the second support plate and the buffer hydraulic cylinder, secondary buffer of the lift car is completed. Through the second grade buffering, reduce the impact force in grades, can effectively guarantee personnel's in the car life safety.

However, this device also has certain disadvantages, for example, although the impact force of the car due to the gravitational acceleration can be reduced in a graded manner by the secondary buffering, it is inevitable that when the impact force generated by the car is large enough, the first support plate and the second support plate are damaged at the same time; in addition, the position of the car cannot be guaranteed not to deviate during rapid movement, so that impact force generated by the car moving at a high speed on the first support plate and the second support plate is not distributed uniformly, and the first support plate and the second support plate are damaged.

To the problem in the above-mentioned background art, the utility model aims at providing an elevator buffer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elevator buffer to solve the problem that proposes among the above-mentioned background art.

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

an elevator buffer, comprising: one end of the damper is fixedly arranged on a sliding rail on the inner side of the vertical frame, and the other end of the damper is fixedly connected to a fixing ring on one side of the elevator car body; the lower end of the elevator car body is provided with a first pressing plate, the first pressing plate is connected with a second pressing plate through a limiting rod, the lower end of the limiting rod is fixedly installed on the second pressing plate, the upper end of the limiting rod penetrates through the first pressing plate and then is fixedly installed through a fixing block, and a compression spring is arranged on the part of the limiting rod between the first pressing plate and the second pressing plate;

the left side and the right side of the lower end of the second pressing plate are provided with connecting blocks, the lower end of each connecting block is connected with a hydraulic rod, the lower end of the hydraulic rod extends into a buffer hydraulic cylinder, and the buffer hydraulic cylinder is arranged at the upper end of the bottom plate; the middle of the lower end of the second pressing plate is provided with a vertical block, the upper side of the bottom plate is provided with a vertical block, and the vertical block at the lower end of the second pressing plate is connected with the vertical block at the upper side of the bottom plate through a buffer spring.

As a further aspect of the present invention: the lower end of the elevator car body is wrapped with a buffer rubber pad.

As a further aspect of the present invention: and a buffer material layer is arranged at the upper end of the first pressing plate.

As a further aspect of the present invention: the elevator car body left and right sides is equipped with the connecting rod, and the pulley is installed to one side outwards to the connecting rod.

As a further aspect of the present invention: the damper comprises a damper body, a second fixing ring is arranged on the outer side of the upper end of the damper body, the lower end of the second fixing ring is connected with a piston rod, the piston rod extends into the damper body, and a piston is arranged at the bottom end of the piston rod; an extension valve, a circulation valve, a compression valve and a compensation valve are arranged in the damper body; the lower end of the damper body is provided with a first fixing ring.

Compared with the prior art, the beneficial effects of the utility model are that:

elevator buffer structural design reasonable, the practicality is strong, it not only can guarantee through connecting rod and pulley mating reaction that the elevator railway carriage or compartment body that descends fast does not take place the skew in the in-process position that descends, but also can realize cubic buffering effect through the combined action of attenuator, first clamp plate and gag lever post, second clamp plate and buffering pneumatic cylinder, guarantees that the personnel of taking inside the elevator railway carriage or compartment body does not receive the injury when the elevator railway carriage or compartment body sharply descends.

Drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural view of an elevator buffer device according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a damper of an elevator buffer device according to an embodiment of the present invention.

In the figure: the elevator damping device comprises a vertical frame 1, a sliding rail 2, a pulley 3, a connecting rod 4, a damper 5, a fixing ring 6, an elevator car 7, a buffer rubber pad 8, a fixing block 9, a buffer material layer 10, a first pressing plate 11, a compression spring 12, a limiting rod 13, a second pressing plate 14, a connecting block 15, a buffer hydraulic cylinder 16, a base plate 17, a vertical block 18, a buffer spring 19, a first fixing ring 20, a second fixing ring 21, a damper body 22, a piston rod 23, a stretching valve 24, a piston 25, a circulation valve 26, a compression valve 27 and a compensation valve 28.

Detailed Description

Example 1

Referring to fig. 1, in embodiment 1 of the present invention, an elevator buffer device includes: the damper comprises a damper 5, a first pressing plate 11 and a second pressing plate 14, wherein one end of the damper 5 is fixedly installed on a sliding rail 2 on the inner side of the vertical frame 1, and the other end of the damper 5 is fixedly connected to a fixing ring 6 on one side of an elevator car body 7; the lower end of the elevator car body 7 is provided with a first pressing plate 11, the first pressing plate 11 is connected with a second pressing plate 14 through a limiting rod 13, the lower end of the limiting rod 13 is fixedly installed on the second pressing plate 14, the upper end of the limiting rod 13 passes through the first pressing plate 11 and is fixedly installed through a fixing block 9, and a compression spring 12 is arranged on the part of the limiting rod 13 between the first pressing plate 11 and the second pressing plate 14;

the left side and the right side of the lower end of the second pressing plate 14 are provided with connecting blocks 15, the lower end of each connecting block 15 is connected with a hydraulic rod, the lower end of each hydraulic rod extends into a buffer hydraulic cylinder 16, and the buffer hydraulic cylinders 16 are arranged at the upper ends of the bottom plates 17; the middle of the lower end of the second pressure plate 14 is provided with a vertical block 18, the upper side of the bottom plate 17 is provided with the vertical block 18, and the vertical block 18 at the lower end of the second pressure plate 14 is connected with the vertical block 18 at the upper side of the bottom plate 17 through a buffer spring 19;

when the elevator car body 7 descends, the elevator car body 7 is firstly buffered and decelerated by the acting force of the damper 5, when the elevator car body 7 descends to the first pressing plate 11, the moving elevator car body 7 drives the first pressing plate 11 to move downwards on the limiting rod 13, and the first pressing plate 11 moves downwards and generates a reaction force to the movement of the first pressing plate 11 due to the deformation of the compression spring 12 at the same time of moving downwards, so that the first pressing plate 11 descends, buffered and decelerated; when the impact force at the lower end of the elevator car body 7 is too large, the elevator car body 7 descends and simultaneously drives the first pressing plate 11 and the second pressing plate 14 to touch the connecting block 15, and the connecting block 15 enables the second pressing plate 14 moving downwards to sharply reduce the speed until the second pressing plate stops moving through reverse hydraulic pressure.

Further, the lower end of the elevator car 7 is wrapped by a cushion rubber pad 8, and the cushion rubber pad 8 is arranged to reduce a large impact force generated on the first pressing plate 11 when the elevator car 7 descending at a high speed falls onto the first pressing plate 11.

Further, the upper end of the first pressing plate 11 is provided with a buffer material layer 10, and the buffer material layer 10 has the same function as the buffer rubber pad 8, and is used for reducing the huge impact force generated by the elevator car 7 on the upper end of the first pressing plate 11.

Further, in order to ensure that the position of the elevator car 7 does not deviate during rapid landing, connecting rods 4 are arranged on the left side and the right side of the elevator car 7, and pulleys 3 are mounted on the outward side of each connecting rod 4; the pulley 3 and the connecting rod 4 cooperate to ensure that the elevator car body 7 does not deviate in position while descending rapidly, and the pulley 3 can also reduce the friction force of the elevator car body 7 on the sliding rail 2 on the inner side of the vertical frame 1.

Example 2

Referring to fig. 2, further, the damper 5 includes a damper body 22, a second fixing ring 21 is disposed on an outer side of an upper end of the damper body 22, a piston rod 23 is connected to a lower end of the second fixing ring 21, the piston rod 23 extends into the damper body 22, and a piston 25 is disposed at a bottom end of the piston rod 23; an extension valve 24, a flow valve 26, a compression valve 27 and a compensation valve 28 are arranged in the damper body 22; the lower end of the damper body 22 is provided with a first fixing ring 20;

when the damper 5 is used, a first fixing ring 20 of the damper 5 is fixedly arranged on the slide rail 2 at the inner side of the vertical frame 1, and a second fixing ring 21 of the damper 5 is fixedly arranged on a fixing ring 6 at the outer side of the elevator car body 7; when the elevator car 7 moves down rapidly, the elevator car 7 pulls the piston 25 at the end of the piston rod 23 to move in the damper body 22 through the second fixing ring 21, and through the cooperation of the expansion valve 24, the flow valve 26, the compression valve 27 and the compensation valve 28, a large gas pressure is generated in the damper body 22, so that a reverse acting force is generated on the second fixing ring 21, and the rapidly moving elevator car 7 is decelerated due to a buffering acting force.

The embodiment of the utility model provides a theory of operation is:

when the elevator car body 7 rapidly descends, the elevator car body 7 is firstly buffered and decelerated by the acting force of the damper 5, when the elevator car body 7 descends to the first pressing plate 11, the moving elevator car body 7 drives the first pressing plate 11 to move downwards on the limiting rod 13, and the first pressing plate 11 moves downwards and generates a reaction force to the movement of the first pressing plate 11 due to the deformation of the compression spring 12 at the same time of the downward movement of the first pressing plate 11, so that the first pressing plate 11 descends, buffered and decelerated; when the impact force at the lower end of the elevator car body 7 is too large, the elevator car body 7 descends and simultaneously drives the first pressing plate 11 and the second pressing plate 14 to touch the connecting block 15, and the connecting block 15 enables the second pressing plate 14 moving downwards to sharply reduce the speed until the second pressing plate stops moving through reverse hydraulic pressure;

elevator buffer structural design reasonable, the practicality is strong, it not only can guarantee through connecting

rod

4 and 3 mating reaction of pulley that the elevator railway carriage or compartment body 7 that descends fast does not take place the skew in the in-process position that descends, but also can realize cubic buffering effect through attenuator 5, first clamp plate 11 and gag lever post 13, the combined action of second clamp plate 14 and buffering pneumatic cylinder 16, guarantee that the personnel of taking inside the elevator railway carriage or compartment body 7 do not receive the injury when the elevator railway carriage or compartment body 7 sharply descends.

Claims

1. An elevator buffer, comprising: attenuator (5), first clamp plate (11) and second clamp plate (14), its characterized in that:

one end of the damper (5) is fixedly arranged on the sliding rail (2) on the inner side of the vertical frame (1), and the other end of the damper (5) is fixedly connected with a fixing ring (6) on one side of the elevator compartment body (7);

the lower end of the elevator car body (7) is provided with a first pressing plate (11), the first pressing plate (11) is connected with a second pressing plate (14) through a limiting rod (13), the lower end of the limiting rod (13) is fixedly installed on the second pressing plate (14), the upper end of the limiting rod (13) penetrates through the first pressing plate (11) and then is fixedly installed through a fixing block (9), and a compression spring (12) is arranged on the part, between the first pressing plate (11) and the second pressing plate (14), of the limiting rod (13);

connecting blocks (15) are arranged on the left side and the right side of the lower end of the second pressing plate (14), the lower end of each connecting block (15) is connected with a hydraulic rod, the lower end of each hydraulic rod extends into a buffer hydraulic cylinder (16), and the buffer hydraulic cylinder (16) is arranged at the upper end of the bottom plate (17); the middle of the lower end of the second pressing plate (14) is provided with a vertical block (18), the upper side of the bottom plate (17) is provided with the vertical block (18), and the vertical block (18) at the lower end of the second pressing plate (14) is connected with the vertical block (18) at the upper side of the bottom plate (17) through a buffer spring (19).

2. The elevator buffer of claim 1, wherein: the lower end of the elevator car body (7) is wrapped with a buffer rubber pad (8).

3. The elevator buffer of claim 1, wherein: and a buffer material layer (10) is arranged at the upper end of the first pressing plate (11).

4. The elevator buffer of claim 2, wherein: the elevator car body (7) is provided with connecting rods (4) on the left and right sides, and pulleys (3) are mounted on one outward side of each connecting rod (4).

5. The elevator buffer of claim 1, wherein: the damper (5) comprises a damper body (22), a second fixing ring (21) is arranged on the outer side of the upper end of the damper body (22), the lower end of the second fixing ring (21) is connected with a piston rod (23), the piston rod (23) extends into the damper body (22), and a piston (25) is arranged at the bottom end of the piston rod (23); an extension valve (24), a flow valve (26), a compression valve (27) and a compensation valve (28) are arranged in the damper body (22); the outer side of the lower end of the damper body (22) is provided with a first fixing ring (20).