CN215924093U

CN215924093U - Elevator damping buffer

Info

Publication number: CN215924093U
Application number: CN202122535663.1U
Authority: CN
Inventors: 梁栓财; 赵存娟; 李鹏程
Original assignee: BAOJI SHENGHUA BUFFER TECHNOLOGY CO LTD
Current assignee: BAOJI SHENGHUA BUFFER TECHNOLOGY CO LTD
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-03-01
Anticipated expiration: 2031-10-21

Abstract

The utility model belongs to the technical field of safety protection from elevator operation to a terminal, and particularly discloses an elevator damping buffer. Comprises a cylinder body and an outer sleeve; the outer sleeve is sleeved on the outer wall of the cylinder body and is connected with the cylinder body in a sliding manner; the bottom of the cylinder body is provided with a one-way valve, and an elastic buffering agent is filled in the cylinder body; a piston rod is arranged at the top of the outer sleeve and inside the outer sleeve, a piston is arranged at the bottom end of the piston rod, the piston extends into the cylinder body, and an annular gap is formed between the piston and the inner wall of the cylinder body; the outer sleeve, the piston and the cylinder body are coaxially arranged; the bottom of the cylinder body is provided with an installation base. The utility model takes the macromolecule elastic daub material as the main filling medium of the buffer, and the buffer can quickly absorb the energy generated under the action of external force through the gap structure between the piston and the cylinder body and convert part of the energy into heat energy to cause the consumption of external energy, thereby realizing the aim of buffering and damping in the high-speed elevator.

Description

Elevator damping buffer

Technical Field

The utility model belongs to the technical field of safety protection from elevator operation to a terminal, and particularly relates to an elevator damping buffer.

Background

At present, the well-known polyurethane buffer and the well-known oil buffer in the market are both arranged in a pit of an elevator, and when the well-known polyurethane buffer and the well-known oil buffer are collided by huge impact force, the polyurethane buffer and the well-known oil buffer play a role in buffering and protecting equipment and personal safety. The polyurethane buffer is a small-capacity buffer, is only suitable for elevator equipment with rated speed less than 1m/s, and cannot be used in a complex environment; the oil pressure buffer is suitable for elevator equipment with the speed of more than 1m/s, but oil leakage often occurs, the buffer medium is replaced, the maintenance cost is high, and the environment is not protected. Both the two buffers have the defects that the use range of the buffers is limited, the replacement frequency is increased, and the purchase cost is increased.

Therefore, it is an urgent technical problem to provide a new elevator damping buffer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of limited application range and high maintenance rate in the prior art and provides an elevator damping buffer.

The utility model provides an elevator damping buffer, which comprises a cylinder body and an outer sleeve, wherein the cylinder body is provided with a cylinder cover;

the outer sleeve is sleeved on the outer wall of the cylinder body and is connected with the cylinder body in a sliding manner;

the bottom of the cylinder body is provided with a one-way valve, and an elastic buffering agent is filled in the cylinder body;

a piston rod is arranged at the top of the outer sleeve and inside the outer sleeve, a piston is arranged at the bottom end of the piston rod, the piston extends into the cylinder body, and an annular gap is formed between the piston and the inner wall of the cylinder body;

the outer sleeve, the piston and the cylinder body are coaxially arranged;

the bottom of the cylinder body is provided with an installation base;

the mounting base is fixedly connected with a pit at the bottom of the elevator.

The further scheme is that a contact type travel switch is arranged on the mounting base, and a driving head of the contact type travel switch is abutted to the lower edge of the outer sleeve.

The further scheme is that the contact type travel switch is 237-ZK1-11 or 237-ZK 2-11.

The cylinder body is characterized in that a boss extends from the top of the cylinder body to the outer side of the cylinder body, a limiting table extends from the bottom of the outer sleeve to the inner side of the outer sleeve, the outer sleeve is in a non-compression state, the limiting table is abutted to the boss, and the outer sleeve slides relative to the cylinder body in a compression state.

The further proposal is that the top of the outer sleeve is provided with a rubber pad.

In a further aspect, the annular gap has a thickness of 2 mm.

In a further aspect, the elastic buffer is elastic cement.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the macromolecular elastic daub material is used as a main filling medium of the buffer, the buffer can rapidly absorb energy generated under the action of external force through the annular gap design structure between the piston and the cylinder body, and part of the energy is converted into heat energy, so that the external energy is consumed, and the reaction force of the buffer is larger when the pressure is larger, so that the purpose of running in a high-speed elevator is realized, the buffer does not need to be maintained and replaced, the defects that the buffer leaks oil, cannot work in a high-temperature environment and the like are avoided, and the performance of the buffer is more excellent.

Drawings

The utility model is illustrated and described only by way of example and not by way of limitation in the scope of the utility model as set forth in the following drawings, in which:

FIG. 1: the utility model has a schematic structure;

FIG. 2: the assembly of the outer sleeve and the cylinder body is schematically shown;

in the figure: 1. the hydraulic cylinder comprises a rubber pad, a jacket, a piston, a cylinder body, elastic daub, a contact type travel switch, a check valve, an installation base, a boss and a limiting table, wherein the rubber pad is 2, the jacket is 3, the piston is 4, the cylinder body is 5, the contact type travel switch is 6, the check valve is 7, the installation base is 8, the boss is 9, and the limiting table is 10.

Detailed Description

In order to make the objects, technical solutions, design methods, and advantages of the present invention more apparent, the present invention will be further described in detail by specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, the utility model provides an elevator damping buffer, which is characterized by comprising a cylinder body 4 and an outer sleeve 2; the outer sleeve 2 is sleeved on the outer wall of the cylinder body 4 and is in sliding connection with the cylinder body 4; the bottom of the cylinder body 4 is provided with a one-way valve 7, and an elastic buffering agent 5 is filled in the cylinder body; a piston rod is arranged at the top of the outer sleeve 2 and inside the outer sleeve 2, a piston 3 is arranged at the bottom end of the piston rod, the piston 3 extends into the cylinder body 4, and an annular gap is formed between the piston 3 and the inner wall of the cylinder body 4; the outer sleeve 2, the piston 3 and the cylinder body 4 are coaxially arranged; the bottom of the cylinder body 4 is provided with a mounting base 8, and the mounting base 8 is fixedly connected with a pit at the bottom of the elevator. The mounting base 8 is provided with a contact type travel switch 6, and the driving head of the contact type travel switch 6 is abutted against the lower edge of the outer sleeve 2.

In the above, the contact type travel switch 6 is a contact type travel switch manufactured by shanghai hua sanden electrical limited and having a model number of 237-ZK1-11 or 237-ZK 2-11.

In the present embodiment, the cylinder 4 and the jacket 2 slide by the following structure: as shown in fig. 2, a boss 9 extends from the top of the cylinder body 4 to the outer side of the cylinder body 4, a limit table 10 extends from the bottom of the outer sleeve 2 to the inner side of the outer sleeve 2, the inner diameter of the top of the outer sleeve 2 is larger than the inner diameter of the bottom of the outer sleeve 2, and the outer diameter of the top of the cylinder body 4 is larger than the outer diameter of the bottom of the cylinder body 4; when the outer sleeve 2 is in a non-compression state, the limiting table 10 is abutted to the boss 9, and when the outer sleeve 2 is in a compression state, the outer sleeve 2 slides relative to the cylinder body 4.

In the above, the top of the outer sleeve 2 is provided with a rubber pad 1.

In the present embodiment, the piston 3 outer diameter is 4mm smaller than the cylinder 4 inner diameter, and the piston 3 and the cylinder 4 are coaxially disposed, thereby forming an annular gap thickness of 2 mm.

In this embodiment, the elastic buffer 5 is a polymer elastic cement. Under the action of external force, the piston 3 is pressurized and simultaneously causes the friction force in the elastic daub to rise, and the higher the speed is, the larger the viscous resistance is, thereby achieving the purpose of buffering and damping.

During assembly, the bottom of the cylinder body 4 is inserted from the top of the outer sleeve 2 until the boss 9 abuts against the limiting table 10, then the outer sleeve 2 is subjected to capping treatment (for example, the top of the outer sleeve 2 is provided with internal threads, a metal sheet with external threads is screwed into the outer sleeve 2 to realize capping, or capping is completed by welding without requirement), and the top of the outer sleeve 2 is provided with a sunken through hole. The piston rod is fixed by a screw, and the piston 3 is fixedly arranged at the bottom end of the piston rod, so that the piston 3 can extend into the cylinder 4 in a non-pressure state. The elastic daub is driven into the cylinder 4 by the pressure device through the one-way valve 7, so that the elastic daub is in close contact with the bottom of the piston 3. At this time, pressure exists in the cylinder 4, a reaction force is generated on the piston 3, and when the elastic daub is driven in, the reaction force is balanced with the self gravity of the outer sleeve 2, the piston 3 and other parts. Ensures that the outer sleeve 2 can not freely slide with the cylinder body 4 in a non-pressure state. The cylinder 4 is then fixed to the mounting base 8. A contact type travel switch 6 is mounted on the mounting base 8, and a driving head of the contact type travel switch 6 is abutted against a lower edge of the outer cover 2. Thus, the assembly of the present invention is completed.

When the utility model is used and is not in a pressure state, the utility model is in the assembling state as described above, namely: the piston 3 is contacted with the elastic daub, the lug boss 9 is contacted with the limit table 10, and the lower edge of the outer sleeve 2 is contacted with the driving head of the contact type travel switch 6. When the damping buffer is under the action of external load, the piston 3 of the buffer is pressed into the cylinder body 4, the elastic daub in the cylinder body 4 is compressed, the internal pressure rises, elastic counter force is generated on the piston 3, meanwhile, the piston 3 and a high-viscosity daub medium generate great friction force, the higher the speed is, the greater the viscous resistance is, the impact kinetic energy can be converted into heat energy and elastic potential energy in a very short time, and the release and the good absorption effect are achieved. Under the action of external force, the outer sleeve 2 moves downwards along with the pressure and touches the contact type travel switch 6, and after the power failure external force of the elevator main machine power supply disappears, the buffer automatically resets by utilizing the elastic potential energy pre-stored by the daub medium.

In the process, because an annular gap exists between the piston 3 and the cylinder 4, when the buffer bears pressure, the piston 3 compresses the elastic daub to cause the internal friction force of the viscous colloid to rise, the elastic daub generates viscous friction through the gap between the piston 3 and the cylinder 4 under the action of shearing force, the proportion of the internal pressure rises, the piston generates elastic force, the higher the speed is, the larger the viscous resistance is, and therefore the external acting force is eliminated. When the external force is reduced or disappears, the elastic daub expands, and the piston combining part returns to the original position due to the fact that the elastic daub is initially pressurized when the buffer is assembled.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. The damping buffer of the elevator is characterized by comprising a cylinder body (4) and an outer sleeve (2);

the outer sleeve (2) is sleeved on the outer wall of the cylinder body (4) and is in sliding connection with the cylinder body (4);

the bottom of the cylinder body (4) is provided with a one-way valve (7), and an elastic buffer (5) is filled in the cylinder body;

a piston rod is arranged at the top of the outer sleeve (2) and inside the outer sleeve (2), a piston (3) is arranged at the bottom end of the piston rod, the piston (3) extends into the cylinder body (4), and an annular gap is formed between the piston (3) and the inner wall of the cylinder body (4);

the outer sleeve (2), the piston (3) and the cylinder body (4) are coaxially arranged;

the bottom of the cylinder body (4) is provided with a mounting base (8);

the mounting base (8) is fixedly connected with a pit at the bottom of the elevator.

2. An elevator damping bumper according to claim 1, characterized in that a contact type travel switch (6) is provided on the mounting base (8), and the driving head of the contact type travel switch (6) abuts against the lower edge of the outer sleeve (2).

3. An elevator damping buffer as claimed in claim 2, characterized in that the contact travel switch (6) is of the type 237-ZK1-11 or 237-ZK 2-11.

4. The elevator damping buffer according to claim 1, characterized in that a boss (9) is arranged on the outer wall of the cylinder body (4), the boss (9) is close to the top of the cylinder body (4), a limit table (10) extends from the bottom of the outer sleeve (2) to the inner side of the outer sleeve (2), the limit table (10) is abutted to the boss (9) when the outer sleeve (2) is not stressed, and the outer sleeve (2) slides relative to the cylinder body (4) when the outer sleeve (2) is stressed.

5. An elevator damping buffer as claimed in claim 1, characterized in that a rubber pad (1) is fixedly arranged on top of the outer jacket (2).

6. The elevator damping snubber of claim 1, wherein the annular gap is 2mm thick.

7. An elevator damping bumper according to claim 1, characterized in that the elastic buffer (5) is an elastic cement.