CN209890034U

CN209890034U - Elevator shaft bottom tunnel buffer

Info

Publication number: CN209890034U
Application number: CN201920477689.5U
Authority: CN
Inventors: 周轩; 李坚; 饶良涛
Original assignee: Konda Elevator Co Ltd
Current assignee: Konda Elevator Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-03
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses an elevator shaft bottom gallery buffer, including the base, be equipped with the hydraulic pressure post on this base, be equipped with the buffering post in the hydraulic pressure post, the both ends of this buffering post are fixed mutually with two upper and lower internal face of hydraulic pressure post, be equipped with the piston rod in the buffering post, be equipped with the pressure hole on the buffering post and the periphery, be fixed with secondary buffering post on the interior top wall surface of hydraulic pressure post, be equipped with secondary piston rod in this secondary buffering post, be fixed with reverse bearing plate on the one end that secondary piston rod wore out the hydraulic pressure post, be fixed with the pressure limiting pipe on the outside wall of hydraulic pressure post, one end and the hydraulic pressure post of this pressure limiting pipe communicate with each other, the other end of pressure limiting pipe is overlapped and is equipped with the pressure; the utility model provides an instantaneous impact force when mode through hydraulic conversion is mainly to elevator car tenesmus cushions this kind of elevator shaft bottom gallery buffer, has the structure height low, the efficient advantage of buffering.

Description

Elevator shaft bottom tunnel buffer

Technical Field

The utility model belongs to the technical field of the elevator safety part, a elevator shaft bottom gallery buffer particularly.

Background

The buffer is arranged in a pit of a shaft and is required to be firmly and reliably arranged and have strong bearing impact capacity, and the buffer is vertical to the ground and is just opposite to a buffer plate on the lower side of a car (or a counterweight). A buffer is an elevator safety device that absorbs, consumes energy from a moving car or counterweight, decelerates and stops it, and provides a final level of safety protection to it. When the car or the counterweight falls vertically out of control and has considerable kinetic energy, in order to reduce and avoid loss as much as possible, the energy of the car (or the counterweight) must be absorbed and consumed, so that the car (or the counterweight) can be stopped in a pit safely and smoothly in a deceleration way. The principle of the buffer is to convert the kinetic energy and potential energy of the car (counterweight) into a harmless or safe energy form. The buffer is adopted to enable the moving car or the counterweight to gradually decelerate and stop within a certain buffer stroke or time.

Chinese patent document 201720141819 discloses an elevator buffer, in this scheme, the adoption is equipped with spring buffer portion and base on the piston and has spring buffer in to make the buffer comprise two spring cushions and a hydraulic cushion, realize the multilayer buffering, its advantage is that the compressive strength of buffer has been improved to a certain extent, avoids the elevator buffer ageing when impact is too big in the twinkling of an eye, has improved factor of safety. The structure is more complicated, referring to the attached drawings, the top layer is a silencing cover plate, then a spring, a piston, a cylinder body, a spring and a base are sequentially arranged, the multi-level buffering is mainly provided by the spring, and the whole body is stacked along the height direction, so that the instability of the equipment is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the defect that above-mentioned prior art exists, the utility model provides an elevator shaft bottom gallery buffer mainly cushions the instantaneous impact force when the mode through hydraulic conversion is tenesmic to elevator car, has the structure height low, advantage that the buffering efficiency is high.

The technical scheme of the utility model is realized like this:

a buffer for an elevator shaft bottom gallery comprises a base, wherein a hydraulic column is arranged on the base, and is characterized in that a buffer column is arranged in the hydraulic column, two ends of the buffer column are fixed with the upper inner wall surface and the lower inner wall surface of the hydraulic column, a piston rod is arranged in the buffer column, one end of the piston rod can vertically move and penetrates out of the top end surface of the hydraulic column, a bearing plate is fixed at one end of the piston rod penetrating out of the hydraulic column, and pressure through holes are formed in the buffer column and the circumferential surface;

a secondary buffer column is fixed on the inner top wall surface of the hydraulic column, two ends of the secondary buffer column are open ends, a secondary piston rod is arranged in the secondary buffer column, one end of the secondary piston rod can vertically slide and penetrate out of the top wall surface of the hydraulic column, a reverse bearing plate is fixed on one end of the secondary piston rod, which penetrates out of the hydraulic column, an auxiliary pressure through groove is arranged on the circumferential surface of the secondary buffer column, the auxiliary pressure through groove is arranged in a runway shape, a limiting bulge is arranged on the circumferential surface of the secondary piston rod, which is positioned in the secondary buffer column, and can vertically move and is positioned in the auxiliary pressure through groove, a guide tile is fixed on the limiting bulge, and the guide tile is attached to the outer wall surface of the secondary buffer column;

the outer side wall surface of the hydraulic column is fixedly provided with a pressure limiting pipe, one end of the pressure limiting pipe is communicated with the hydraulic column, the other end of the pressure limiting pipe is sleeved with a pressure limiting cap, the outer wall surface of the pressure limiting pipe is provided with an annular groove, a pressure limiting spring is arranged in the annular groove, the top end of the pressure limiting cap is a sealing end, the inner wall surface of the pressure limiting cap is provided with a limiting ring matched with the annular groove, and one end of the pressure limiting spring abuts against the limiting ring.

The utility model discloses in, lead to the pressure hole and be equipped with a plurality ofly and along the direction of height equipartition of buffering post, lead to the diameter in pressure hole and dwindle gradually along the direction of height top-down of buffering post.

The utility model discloses in, secondary cushion column is equipped with two and uses the cushion column as mid point symmetric distribution.

The utility model discloses in, the cover is equipped with buffer spring on the section that the hydraulic pressure post was worn out to the piston rod.

Compared with the prior art, implement the utility model provides a this kind of elevator shaft bottom gallery buffer has following beneficial effect:

1. the adopted buffer component is mainly a hydraulic unit, and mainly buffers the instantaneous impact force when the elevator box body falls down in a hydraulic transmission mode, has wide application range, and can be applied to high-altitude elevators, freight elevators and the like.

2. When the emergency situation that the elevator is out of control and falls down occurs, instantaneous impact force is applied to the bearing plate, the piston rod moves downwards, hydraulic oil is extruded into the hydraulic column from the buffer column, the secondary piston rod moves upwards in the reverse direction, the reverse bearing plate jacks up, and the bearing plate pressed instantaneously is reversely connected.

3. When the falling height of the elevator is too high or the mass of the elevator is too large, if the buffer column and the secondary buffer column still cannot completely absorb the instantaneous impact force of the elevator, the pressure limiting cap in the pressure limiting pipe is pressed to displace, the falling kinetic energy of the elevator is further absorbed in a hydraulic displacement mode, and the elevator is ensured not to crash through the buffering of the three levels when the elevator is in an emergency.

Drawings

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

FIG. 2 is a schematic view of the structure of the secondary buffer column in FIG. 1;

fig. 3 is a schematic structural view of the pressure limiting tube in fig. 1.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The buffer for the underground tunnel of the elevator shaft as shown in fig. 1-3 comprises a base 1, a hydraulic column 11 is arranged on the base 1, a buffer column 12 is arranged in the hydraulic column 11, two ends of the buffer column 12 are fixed with the upper and lower inner wall surfaces of the hydraulic column 11, a piston rod 13 is arranged in the buffer column 12, one end of the piston rod 13 can move up and down and penetrates out of the top end surface of the hydraulic column 11, a bearing plate 14 is fixed on one end of the piston rod 13 penetrating out of the hydraulic column 11, and a through pressure hole 15 is arranged on the circumferential surface of the buffer column 12.

Be fixed with secondary bumping post 2 on the interior wall surface of pushing up of hydraulic column 11, the both ends of this secondary bumping post 2 are the open end, be equipped with secondary piston rod 21 in the secondary bumping post 2, the one end slidable about this secondary piston rod 21 wears out the hydraulic column 11 wall surface of pushing up, secondary piston rod 21 wears out one of hydraulic column 11 and serves and be fixed with reverse bearing plate 22, be equipped with supplementary indent 23 on the periphery of secondary bumping post 2, this supplementary indent 23 that leads to is runway shape setting, secondary piston rod 21 is equipped with spacing arch 24 on being located the periphery of secondary bumping post 2, this spacing arch 24 can reciprocate be located supplementary indent 23, be fixed with direction tile 25 on the spacing arch 24, this direction tile 25 laminates with the outer wall surface of secondary bumping post 2 mutually.

When an emergency such as an uncontrolled elevator and a falling occurs, an instantaneous impact force is applied to the bearing plate 14, so that the piston rod 13 moves downwards, the hydraulic oil is extruded from the buffer column 12 into the hydraulic column 11, the secondary piston rod 21 moves upwards in the opposite direction, the opposite bearing plate 22 jacks upwards, and the instantaneously pressed bearing plate 14 is reversely supported.

The outer side wall surface of the hydraulic column 11 is fixed with a pressure limiting pipe 3, one end of the pressure limiting pipe 3 is communicated with the hydraulic column 11, the other end of the pressure limiting pipe 3 is sleeved with a pressure limiting cap 31, the outer wall surface of the pressure limiting pipe 3 is provided with an annular groove 32, a pressure limiting spring 33 is arranged in the annular groove 32, the top end of the pressure limiting cap 31 is a sealing end, the inner wall surface of the pressure limiting cap 31 is provided with a limiting ring 34 matched with the annular groove 32, and one end of the pressure limiting spring 33 is abutted against the limiting ring 34.

When the falling height of the elevator is too high or the mass of the elevator is too large, if the buffer column 12 and the secondary buffer column 2 still cannot completely absorb the instantaneous impact force of the elevator, the pressure limiting cap 31 of the pressure limiting pipe 3 is pressed to displace, the falling kinetic energy of the elevator is further absorbed in a hydraulic displacement mode, and the elevator is ensured not to crash through the buffer of the three levels when the elevator is in an emergency.

In this embodiment, the pressure holes 15 are provided in plurality and equally distributed along the height direction of the cushion column 12, and the diameter of the pressure holes 15 is gradually reduced from top to bottom along the height direction of the cushion column 12. It should be noted here that the section of the damping cylinder 12 close to the bottom surface of the hydraulic cylinder 11 has no pressure hole 15, so that the stroke of the piston rod 13 is limited, that is, after the piston rod 13 passes over the lowest pressure hole 15, the hydraulic oil in the damping cylinder 12 cannot flow out, and the piston rod 13 cannot go down any more, so as to ensure that no rigid contact occurs inside the entire damper device. The diameter of the pressure hole 15 is gradually reduced because the hydraulic pressure in the buffer column 12 needs to be quickly discharged at the moment of falling of the elevator, and when the instantaneous peak passes, the flow of the hydraulic oil can be reduced, and the buffering time of the buffer column 12 is prolonged.

In this embodiment, two secondary buffer pillars 2 are provided and symmetrically distributed with the buffer pillar 12 as the midpoint.

In this scheme, the cover is equipped with buffer spring on the section that hydraulic column 11 was worn out to piston rod 13.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A buffer for an elevator shaft bottom gallery comprises a base, wherein a hydraulic column is arranged on the base, and is characterized in that a buffer column is arranged in the hydraulic column, two ends of the buffer column are fixed with the upper inner wall surface and the lower inner wall surface of the hydraulic column, a piston rod is arranged in the buffer column, one end of the piston rod can vertically move and penetrates out of the top end surface of the hydraulic column, a bearing plate is fixed at one end of the piston rod penetrating out of the hydraulic column, and pressure through holes are formed in the buffer column and the circumferential surface;

2. The buffer of claim 1, wherein the pressure hole is provided in plurality and uniformly distributed along the height direction of the buffer column, and the diameter of the pressure hole is gradually reduced from top to bottom along the height direction of the buffer column.

3. The buffer of claim 2, wherein the two secondary buffer posts are symmetrically distributed with the buffer post as a midpoint.

4. The buffer as claimed in claim 3, wherein the section of the piston rod extending out of the hydraulic column is sleeved with a buffer spring.