CN216336007U

CN216336007U - Elevator pit buffer

Info

Publication number: CN216336007U
Application number: CN202122629325.4U
Authority: CN
Inventors: 冯儒斌; 倪赛忠; 胡丽娟; 邓宁
Original assignee: Xiwei Elevator Co ltd
Current assignee: Xiwei Elevator Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-19
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses an elevator pit buffer device, which comprises: the base, the base top is provided with first backup pad, and first backup pad and base are provided with hydraulic buffer gear, and first backup pad top is provided with the second backup pad, sets up atmospheric pressure buffer gear between second backup pad and the first backup pad, and second backup pad top is provided with the roof, and the roof bottom is provided with the buffer beam, and the buffer beam bottom is inserted and is located the second backup pad below, and the buffer beam outside cover is equipped with first spring. According to the utility model, the first spring is used for buffering the top plate, the air pressure buffering mechanism is used for buffering the second supporting plate, and the hydraulic buffering mechanism is used for buffering the first supporting plate, so that the elevator car is buffered for multiple times, the falling speed of the elevator car is gradually reduced, a good buffering effect is further achieved on the elevator car, and the safety of passengers is effectively ensured.

Description

Elevator pit buffer

Technical Field

The utility model relates to the technical field of elevator equipment, in particular to an elevator pit buffer device.

Background

With the continuous progress and development of society, high-rise buildings are increased continuously, and elevators become indispensable tools among the buildings. The traction elevator is a common vertical lifting tool and is generally used in areas such as large commercial buildings or office buildings, compared with a hydraulic elevator, the traction elevator has the advantages of high transmission height, high acceleration, rapid lifting and the like, and the application range of the traction elevator is very wide. In recent years, along with the continuous occurrence of elevator accidents, people pay more attention to safety protection devices of elevators. When the steel rope of pulling the car breaks, the protector that the car falls the in-process generally is safety tongs, but has car guide rail fracture or the malfunctioning condition of safety tongs to take place, so the car will fall to the elevator well pit with higher speed always, will lead to weighing down the ladder and cause serious accident, for this reason the elevator well pit all is equipped with buffer. When the elevator moves upwards or downwards, due to the breakage of the steel wire rope, the traction friction force and the insufficient brake braking force; when the control system fails and exceeds the bottom layer or the top layer of the terminal landing, the buffer device plays a role in buffering so as to prevent the elevator car or the counterweight from directly colliding with the bottom or impacting the top and protect the safety of passengers and equipment. The existing elevator buffer device mostly adopts a single buffer device, so that the buffer effect of the elevator buffer device is poor, and the safety of an elevator is reduced.

Therefore, how to provide an elevator pit buffer device with good buffer effect and capable of effectively ensuring the safety of passengers is one of the technical problems which need to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an elevator pit buffer. The purpose is to solve the above-mentioned deficiency and offer.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an elevator pit buffer comprising: a base; a first supporting plate is arranged above the base; the first supporting plate and the base are provided with hydraulic buffering mechanisms; a second supporting plate is arranged above the first supporting plate; an air pressure buffer mechanism is arranged between the second support plate and the first support plate; a top plate is arranged above the second supporting plate; a plurality of buffer rods are uniformly distributed at the bottom end of the top plate; the lower end of each buffer rod is inserted into a reserved hole in the second supporting plate, and a limiting plate is arranged at the bottom end of each buffer rod; a first spring is sleeved on the outer side of each buffer rod; the two ends of the first spring are respectively abutted with the top plate and the second supporting plate.

The beneficial effect of this technical scheme is: when elevator car falls, elevator car at first contacts with the roof, the roof receives decurrent impact force, first spring plays the cushioning effect to the roof, the second backup pad moves down along with the roof under the drive of first spring simultaneously, then atmospheric pressure buffer gear plays the cushioning effect to the second backup pad, first backup pad moves down along with first backup pad under atmospheric pressure buffer gear's drive simultaneously, hydraulic buffer gear plays the cushioning effect to first backup pad at last, elevator car is through buffering many times, the speed of falling progressively reduces, can play good buffering effect to elevator car, effectively guarantee passenger's safety.

Preferably, a plurality of auxiliary buffer mechanisms are further arranged between the first support plate and the second support plate; the auxiliary buffer mechanisms are the same as the buffer rods in number and are arranged in a one-to-one correspondence mode.

Preferably, each auxiliary buffer mechanism comprises a connecting rod, a sliding block, a sliding rail, a baffle plate and a second spring; the sliding rail is fixedly connected to the top end of the first supporting plate; the sliding block is connected to the sliding rail in a sliding manner; one end of the connecting rod is hinged to the bottom end of the limiting plate, and the other end of the connecting rod is hinged to the sliding block; the baffle is fixedly connected to one end, far away from the buffer rod, of the slide rail; and two ends of the second spring are respectively abutted with the sliding block and the baffle.

The beneficial effects of the above technical scheme are: through set up supplementary buffer gear between first backup pad and second backup pad, when roof atress downwardly moving, at first buffer beam moves down along with the roof together, then the connecting rod top is along with buffer beam downwardly moving in-process, and the drive slider slides along the guide rail, and the second spring plays the cushioning effect to the slider, can further promote buffering effect.

Preferably, the hydraulic damping mechanism comprises a plurality of hydraulic cylinders; the hydraulic cylinders are uniformly distributed at the top end of the base; and the bottom end of the cylinder body of each hydraulic cylinder is fixedly connected to the top end of the base, and the top end of the piston rod of each hydraulic cylinder is fixedly connected to the bottom end of the first supporting plate.

Preferably, the pneumatic buffer mechanism comprises a plurality of cylinders; the plurality of cylinders are uniformly distributed at the top end of the first supporting plate; and the bottom end of the cylinder body of each air cylinder is fixedly connected to the top end of the first supporting plate, and the top end of the piston rod of each air cylinder is fixedly connected to the bottom end of the second supporting plate.

Preferably, the top plate top end is provided with a cushion pad.

Preferably, the top end of the second support plate is provided with a buffer air bag.

Compared with the prior art, the utility model has the following technical effects:

1) when the elevator car falls, the elevator car is firstly contacted with the top plate, the top plate is subjected to downward impact force, the first spring has a buffering effect on the top plate, the second supporting plate moves downwards along with the top plate under the driving of the first spring, then the air pressure buffering mechanism has a buffering effect on the second supporting plate, the first supporting plate moves downwards along with the first supporting plate under the driving of the air pressure buffering mechanism, finally the hydraulic buffering mechanism has a buffering effect on the first supporting plate, the elevator car is buffered for multiple times, the falling speed is gradually reduced, a good buffering effect can be achieved on the elevator car, and the safety of passengers is effectively guaranteed;

2) through set up supplementary buffer gear between first backup pad and second backup pad, when roof atress downwardly moving, at first buffer beam moves down along with the roof together, then the connecting rod top is along with buffer beam downwardly moving in-process, and the drive slider slides along the guide rail, and the second spring plays the cushioning effect to the slider, can further promote buffering effect.

Drawings

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

in the figure: 1. a base; 2. a first support plate; 3. a hydraulic cylinder; 4. a second support plate; 5. a cylinder; 6. an auxiliary buffer mechanism; 601. a connecting rod; 602. a slider; 603. a slide rail; 604. a baffle plate; 605. a second spring; 7. a top plate; 8. a buffer rod; 9. a limiting plate; 10. a first spring; 11. a cushion pad; 12. a buffer air bag.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

The utility model shown in fig. 1 discloses an elevator pit buffer device, comprising: a base 1; a first supporting plate 2 is arranged above the base 1; the first supporting plate 2 and the base 1 are provided with hydraulic buffer mechanisms; a second supporting plate 4 is arranged above the first supporting plate 2; an air pressure buffer mechanism is arranged between the second support plate 4 and the first support plate 2; a top plate 7 is arranged above the second supporting plate 4; 2 buffer rods 8 are uniformly distributed on the left side and the right side of the bottom end of the top plate 7; the lower end of each buffer rod 8 is inserted into a reserved hole in the second support plate 4, a limiting plate 9 is arranged at the bottom end of each buffer rod, and the limiting plate 9 and the air pressure buffer mechanism are not interfered with each other; a first spring 10 is sleeved on the outer side of each buffer rod 8; the first spring 10 abuts against the top plate 7 and the second support plate 4 at both ends thereof.

In the embodiment, 2 auxiliary buffer mechanisms 6 are further arranged between the first support plate 2 and the second support plate 4; the auxiliary buffer mechanisms 6 are arranged in one-to-one correspondence with the buffer rods 8.

In the present embodiment, each auxiliary damping mechanism 6 includes a connecting rod 601, a slider 602, a slide rail 603, a baffle 604, and a second spring 605; the slide rail 603 is fixedly connected to the middle part of the top end of the first support plate 2; the slide block 602 is slidably connected to the slide rail 603; one end of the connecting rod 601 is hinged to the bottom end of the limiting plate 9, and the other end of the connecting rod is hinged to the sliding block 602; the baffle 604 is fixedly connected to one end of the slide rail 603 far away from the buffer rod 8; both ends of the second spring 605 abut against the slider 602 and the stopper 604, respectively.

In the present embodiment, the hydraulic cushion mechanism includes 2 hydraulic cylinders 3; the 2 hydraulic cylinders 3 are uniformly distributed at the left side and the right side of the top end of the base 1; the cylinder body bottom end fixed connection of every pneumatic cylinder 3 is in 1 top of base, and its piston rod top fixed connection in 2 bottoms of first backup pad.

In the present embodiment, the pneumatic cushion mechanism includes 2 air cylinders 5; the plurality of air cylinders 5 are uniformly distributed at the left side and the right side of the top end of the first supporting plate 2; the bottom end of the cylinder body of each cylinder 5 is fixedly connected to the top end of the first supporting plate 2, and the top end of the piston rod of each cylinder is fixedly connected to the bottom end of the second supporting plate 4.

In this embodiment, the top plate 7 is provided with a cushion pad 11 at its top end.

In the present embodiment, the cushion airbag 12 is provided at the top end of the second support plate 4.

In other embodiments, the number and positions of the hydraulic cylinder 3, the air cylinder 5, the auxiliary buffer mechanism 6 and the buffer rods 8 can be designed according to actual requirements.

When the elevator car falls, the top plate is firstly contacted with the elevator car through the top plate, the top plate is impacted downwards, the first spring has a buffering effect on the top plate, the second supporting plate moves downwards along with the top plate under the driving of the first spring, then the air pressure buffering mechanism has a buffering effect on the second supporting plate, the first supporting plate moves downwards along with the first supporting plate under the driving of the air pressure buffering mechanism, finally the hydraulic buffering mechanism has a buffering effect on the first supporting plate, the elevator car is buffered for many times, the falling speed is gradually reduced, good buffering effect can be achieved on the elevator car, the safety of passengers is effectively ensured, and an auxiliary buffering mechanism is arranged between the first supporting plate and the second supporting plate, when the top plate is stressed to move downwards, the buffering rod moves downwards along with the top plate, then the top end of the connecting rod moves downwards along with the buffering rod, the drive slider slides along the guide rail, and the second spring plays the cushioning effect to the slider, can further promote buffering effect.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. An elevator pit buffer, comprising: a base (1); a first supporting plate (2) is arranged above the base (1); the first supporting plate (2) and the base (1) are provided with hydraulic buffering mechanisms; a second supporting plate (4) is arranged above the first supporting plate (2); an air pressure buffer mechanism is arranged between the second supporting plate (4) and the first supporting plate (2); a top plate (7) is arranged above the second supporting plate (4); a plurality of buffer rods (8) are uniformly distributed at the bottom end of the top plate (7); the lower end of each buffer rod (8) is inserted into a reserved hole in the second support plate (4), and a limiting plate (9) is arranged at the bottom end of each buffer rod; a first spring (10) is sleeved on the outer side of each buffer rod (8); and two ends of the first spring (10) are respectively abutted with the top plate (7) and the second supporting plate (4).

2. An elevator pit buffer as claimed in claim 1, characterized in that a plurality of auxiliary buffer mechanisms (6) are also provided between the first support plate (2) and the second support plate (4); the number of the auxiliary buffer mechanisms (6) is the same as that of the buffer rods (8), and the auxiliary buffer mechanisms are arranged in a one-to-one correspondence manner.

3. An elevator pit buffer as claimed in claim 2, characterized in that each of said auxiliary buffer mechanisms (6) comprises a connecting rod (601), a slide block (602), a slide rail (603), a baffle (604) and a second spring (605); the sliding rail (603) is fixedly connected to the top end of the first supporting plate (2); the sliding block (602) is connected to the sliding rail (603) in a sliding manner; one end of the connecting rod (601) is hinged to the bottom end of the limiting plate (9), and the other end of the connecting rod is hinged to the sliding block (602); the baffle (604) is fixedly connected to one end, far away from the buffer rod (8), of the slide rail (603); both ends of the second spring (605) are respectively abutted against the slider (602) and the baffle (604).

4. An elevator pit buffer as claimed in claim 1, characterized in that the hydraulic buffer mechanism comprises a plurality of hydraulic cylinders (3); the hydraulic cylinders (3) are uniformly distributed at the top end of the base (1); the bottom end of the cylinder body of each hydraulic cylinder (3) is fixedly connected to the top end of the base (1), and the top end of the piston rod of each hydraulic cylinder is fixedly connected to the bottom end of the first supporting plate (2).

5. An elevator pit buffer as claimed in claim 4, characterized in that the pneumatic buffer mechanism comprises a plurality of pneumatic cylinders (5); the plurality of cylinders (5) are uniformly distributed at the top end of the first supporting plate (2); the bottom end of the cylinder body of each air cylinder (5) is fixedly connected to the top end of the first supporting plate (2), and the top end of the piston rod of each air cylinder is fixedly connected to the bottom end of the second supporting plate (4).

6. An elevator pit buffer as defined in claim 1, characterized in that the top of the top plate (7) is provided with a cushion pad (11).

7. An elevator pit buffer as defined in claim 1, characterized in that the top end of the second support plate (4) is provided with a buffer airbag (12).