CN-121990439-A - Self-adaptive load buffer and elevator

CN121990439ACN 121990439 ACN121990439 ACN 121990439ACN-121990439-A

Abstract

The invention discloses a self-adaptive load buffer and an elevator, which relate to the technical field of elevators, and comprise necessary buffers, a plurality of load-changing buffers, a plurality of trigger structures and a detection device, wherein each load-changing buffer comprises a load-changing buffer structure and a load-changing matching structure, the load-changing buffer structure is arranged on the side wall of an elevator shaft, the load-changing matching structure is provided with a first state and a second state, the load-changing matching structure is spaced from the load-changing buffer structure in the first state, the load-changing matching structure can be matched with the load-changing buffer structure when the elevator falls out of control, so that the elevator is buffered, each trigger structure is matched with one load-changing buffer to enable the load-changing matching structure to be converted into the second state from the first state, and the detection device detects the load condition of an elevator car.

Inventors

HU JINGRONG
LI ZHENJIA
CHENG ZHONGTAI
ZHANG DONGFANG
SHI CAIHUA
Hu Zhubo
YAN TAO
SHI TENGFEI

Assignees

湖北文理学院
襄阳旭华机电科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260108

Claims (10)

1. An adaptive load buffer, comprising: The necessary buffer comprises a necessary buffer structure and a necessary matching structure, wherein the necessary buffer structure is arranged in an elevator shaft, the necessary matching structure is arranged on the outer side wall of an elevator car, and the necessary buffer structure is matched with the necessary matching structure when the elevator falls out of control so as to buffer the elevator; The system comprises a plurality of load-varying buffers, wherein each load-varying buffer comprises a load-varying buffer structure and a load-varying matching structure, the load-varying buffer structure is arranged on the side wall of an elevator shaft, the load-varying matching structure is provided with a first state and a second state, the load-varying matching structure is spaced from the load-varying buffer structure in the first state, and the load-varying matching structure can be matched with the load-varying buffer structure when the elevator falls out of control in the second state, so that the elevator is buffered; the trigger structures are matched with one load-changing buffer and used for enabling the load-changing matched structure to be converted from the first state to the second state; a detection device for detecting the load condition of the elevator car; The control device is electrically connected with the detection device and the trigger structure and is used for controlling the trigger structure to drive at least one load-changing matching structure to be converted into the second state according to the detection result of the detection device; When the elevator falls out of control, the self-adaptive load buffer has a first working state and a second working state, wherein the necessary buffer works in the first working state, and the necessary buffer and at least one load-changing buffer work in the second working state.
2. The adaptive load buffer of claim 1, wherein the necessary buffer structure and/or the load-varying buffer structure comprises a metal sheet extending in an up-down direction, the metal sheet being disposed in an elevator hoistway, at least a partial region of the metal sheet being deformable, and the metal sheet being provided with a snap-fit portion.
3. The adaptive load buffer of claim 2, wherein the metal sheet has a deformation region extending in an up-down direction, and a fixing region engaged with a side edge of the deformation region, the fixing region being configured to be relatively fixed to a pit side wall of the elevator shaft, the engaging portion being located in the deformation region; the clamping part can drive the deformation area to tear with the fixed area when the elevator falls out of control.
4. The adaptive load buffer of claim 2, wherein the fixed areas are provided on opposite sides of the deformation area, the engagement portion is capable of causing tearing of both sides of the deformation area when the elevator falls out of control, and/or, The junction of deformation region with fixed region is provided with the recess that extends along upper and lower direction, the recess is followed dorsad the direction of sheetmetal gradually expands and sets up.
5. The adaptive load buffer of claim 2, wherein the necessary buffer structure and the load-altering buffer structure each comprise a metal sheet extending in an up-down direction, wherein: the necessary buffer structure and the load-changing buffer structure are arranged on the side wall of the pit of the elevator shaft, or The necessary buffer structure and the load-varying buffer structure are both arranged on the side wall of the elevator shaft of the lowest available floor of the elevator.
6. The adaptive load buffer of claim 1 or 2, wherein the necessary buffer structure comprises a snap-in portion provided on the hoistway side wall, the snap-in portion comprising an upwardly extending first mating protrusion; The necessary cooperation structure is including locating cooperation portion on the lateral wall of elevator car, cooperation portion includes the couple, the couple is formed with the couple groove that the opening set up downwards, is used for with first cooperation arch cooperatees.
7. An adaptive load buffer according to claim 1 or 2, wherein the necessary mating structure and/or the load changing mating structure comprises a housing fixed to a side wall of the car, the housing having an opening on a side facing the sheet metal, and a mating portion located in the housing and corresponding to the opening, the mating portion being connected to the housing by a spring on a side facing away from the opening; in the first state, the matching part overcomes the elasticity and is accommodated in the shell; in the second state, the matching part can extend out of the opening under the action of elastic force.
8. The adaptive load buffer of claim 7, wherein the upper end of the housing is provided with a through hole; the matching part comprises a hook, and a positioning hole is formed in the upper end of the hook; The trigger structure comprises an electromagnetic valve, wherein the electromagnetic valve is provided with a valve core which can be movably arranged, so that in the moving stroke of the valve core, the electromagnetic valve is provided with a locking position penetrating through the through hole and the positioning hole and an unlocking position separated from the positioning hole; When in the first state, the valve core is in a locking position, and the hook overcomes the elasticity and is accommodated in the shell; In the second state, the valve core is in a recovery position, and the hook can stretch out of the opening under the action of elastic force.
9. The adaptive load buffer according to claim 1 or 2, wherein the necessary buffer structure is provided to a pit of the elevator shaft, the necessary buffer structure including a buffer spring extending in an up-down direction; The necessary cooperation structure comprises a cooperation block arranged at the bottom of the elevator car, so that when the elevator falls out of control, the cooperation block is abutted against the buffer spring along with the falling process of the elevator, and the elevator is buffered.
10. Elevator, characterized by comprising an adaptive load buffer according to any one of claims 1 to 9 and an elevator car; The variable load matching structures are arranged on two opposite sides of the elevator car; correspondingly, a plurality of load-changing buffer structures are arranged at positions corresponding to the load-changing matching structures.

Description

Self-adaptive load buffer and elevator Technical Field The invention relates to the technical field of elevators, in particular to a self-adaptive load buffer and an elevator. Background The buffer force of the existing elevator buffer is not adjustable, and only can adapt to the situation of half load of the elevator, namely, the median value between no load and full load is adopted as an ideal working condition, so that deviation from most of actual working conditions is reduced, an ideal protection effect can be achieved when the elevator buffer is half load, but in fact, fewer or more actual passengers are needed, the actual load is lighter or heavier, and when the elevator buffer deviates from the ideal working condition of the median value, personnel can be truly injured, namely, personnel protection cannot be met. For example, when the elevator reaches half of the rated load, the car can be ensured to buffer safely according to the acceleration a meeting the safety of human bodies. However, when the elevator runs without reaching the rated load, the actual load is less than half of the rated load, as the buffer force design is constant, the buffer acceleration is necessarily increased after the buffer mass is reduced, and the buffered actual acceleration exceeds the safety acceleration a which can be born by a human body, namely the force born by the human body is excessive, so that the human body is injured. When the actual load is greater than half of the rated load, the buffer stroke required by the buffer force design is constant, the buffer mass is increased, the ideal buffer stroke designed according to half of the rated load is insufficient, the impact is still continuous after the buffer stroke is used, and the impact is stopped sharply when the impact strikes the bottom of the elevator, so that the human body is damaged in the final impact, and the elevator structure is possibly damaged. According to the principle analysis, no matter the people in the elevator are less than or more than half of the rated load, the people can be injured when the elevator falls out of control, the structural damage of the elevator can be caused, and the injury to the people can be increased along with the increase of the deviation amplitude of the light or heavy load. Therefore, the existing elevator buffer can only be basically suitable for the situation of optimal danger of impact energy when half full load is out of control, but the design of the fixed buffer load can not meet the personnel protection requirements when fewer or more passengers and the actual load is lighter or heavier, and overload injury can be possibly caused to personnel. Disclosure of Invention The invention mainly aims to provide a self-adaptive load buffer and an elevator, and aims to solve the problem that the existing elevator buffer can only adapt to the situation when the elevator is fully loaded for half and cannot meet the personnel protection requirements when passengers are fewer or more and the actual load is lighter or heavier. In order to achieve the above object, the present invention provides an adaptive load buffer, comprising: The necessary buffer comprises a necessary buffer structure and a necessary matching structure, wherein the necessary buffer structure is arranged in an elevator shaft, the necessary matching structure is arranged on the outer side wall of an elevator car, and the necessary buffer structure is matched with the necessary matching structure when the elevator falls out of control so as to buffer the elevator; The system comprises a plurality of load-varying buffers, wherein each load-varying buffer comprises a load-varying buffer structure and a load-varying matching structure, the load-varying buffer structure is arranged on the side wall of an elevator shaft, the load-varying matching structure is provided with a first state and a second state, the load-varying matching structure is spaced from the load-varying buffer structure in the first state, and the load-varying matching structure can be matched with the load-varying buffer structure when the elevator falls out of control in the second state, so that the elevator is buffered; the trigger structures are matched with one load-changing buffer and used for enabling the load-changing matched structure to be converted from the first state to the second state; a detection device for detecting the load condition of the elevator car; The control device is electrically connected with the detection device and the trigger structure and is used for controlling the trigger structure to drive at least one load-changing matching structure to be converted into the second state according to the detection result of the detection device; When the elevator falls out of control, the self-adaptive load buffer has a first working state and a second working state, wherein the necessary buffer works in the first working state, and the necessary buffer and at least one