CN107082335B - Elevator lift safety protection system - Google Patents
Elevator lift safety protection system Download PDFInfo
- Publication number
- CN107082335B CN107082335B CN201710513706.1A CN201710513706A CN107082335B CN 107082335 B CN107082335 B CN 107082335B CN 201710513706 A CN201710513706 A CN 201710513706A CN 107082335 B CN107082335 B CN 107082335B
- Authority
- CN
- China
- Prior art keywords
- elevator
- brake
- car
- counterweight
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/26—Positively-acting devices, e.g. latches, knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention discloses an elevator lifting safety protection system, which comprises a power taking device, an overspeed protection device, an interception device and an electric control device, wherein the power taking device is connected with the overspeed protection device through a power supply; the electricity taking device comprises a contact wire penetrating through an elevator shaft and an electricity receiving mechanism arranged on the outer wall of the lift car; the overspeed protection device comprises a guide rail, a guide shoe and a speed monitoring sensor, wherein the guide rail and the guide shoe are in concave-convex clamping clearance fit with each other, matched matching surfaces are made of magnetic conductive materials, and a telescopic sliding component and a brake shoe are arranged on the guide shoe; the intercepting device comprises a buffering component and a forced braking component; the forced braking mechanism comprises a braking seat, a braking dragging claw, a strong spring and an electromagnetic control valve; the electric control device comprises a central processing unit, a speed judging loop, a car braking loop and a car intercepting loop. This elevator lift safety protection system can realize effectively protecting the elevator lift under the prerequisite that the elevator effectively provided electric power support for each safety device to can exert the guard action equally when the elevator has a power failure.
Description
Technical Field
The invention relates to a safety protection system, in particular to an elevator lifting safety protection system, and belongs to the field of elevator safety protection.
Background
Along with the development of society, the use of elevators is more and more common, and the elevator is most common in places such as office buildings, residential buildings and the like from the original use in commercial buildings and hotels, and the popularization of the vertical elevator brings convenience to the life of people, but the accompanying elevator accidents are gradually increased, and people are more and more concerned about the safety protection measures of the vertical elevator.
The vertical lift elevator generally comprises four spaces and eight systems, wherein the four spaces comprise a machine room part, a hoistway and pit part, a car part and a landing part, the eight systems generally comprise a traction system, a guide system, a car system, a door system, a weight balance system, an electric traction system, an electric control system and a safety protection system, and the safety of the elevator is fully considered in the aspects of the rationality and the reliability of the structure, and the reliability of electric control and traction, and is also provided with a special safety device aiming at various possible dangers.
At present, there are many common elevator lifting safety protection measures, such as an overspeed protection device comprising a speed limiter and a safety gear, a ram protection device comprising a buffer, an emergency stop safety protection and overhaul device, an end station deceleration and limit protection device, a door safety protection device, a rope and belt breakage protection device, etc., and although these conventional safety protection measures can implement safety protection on normal lifting operation of an elevator to a certain extent, the following defects still exist:
1. each safety device all needs electric power to support, and current elevator all adopts power cable's mode to supply electric power, not only makes elevator go up and down to need to provide traction force, the consumption that pulls support power cable extraordinarily and increase, follows the car and remove in addition, the power cable that runs through the elevator well is longer, is in the state of buckling in succession usually at car removal in-process power cable, therefore power cable can cause the fatigue damage of outsourcing rubber because of often buckling, and then has great electrical fault's hidden danger.
2. The overspeed governor of the traditional overspeed protection device is usually installed on the ground of an elevator machine room or a sound insulation layer, the tensioning wheel of a governor rope is installed at a well pit, the governor rope winds through a governor wheel and the tensioning wheel to form a fully-closed loop, two ends of the governor rope are installed on a car frame through rope head connecting frames to operate a lever system of a safety gear, the structure is complex, and in addition, the conditions that a steel wire rope slips in a groove of the governor rope wheel, the governor rope breaks or is excessively relaxed to enable the tensioning device to lose effect and the like during normal operation easily occur.
3. The traditional safety protection device generally can only play a role under the condition of commercial power, and the device generally does not work once the elevator is powered off, for example, the traditional rope and belt breaking protection device is provided with rope and belt breaking switches on a steel belt of a speed limiter steel wire rope, a transmission belt of a speed measuring generator and a layer selection and signal feedback device, the switch immediately acts once the rope or belt is broken, a safety control loop can be cut off to force the elevator to stop running, but the rope and belt breaking switch generally cannot act under the condition of sudden power failure.
4. The conventional safety protection device only protects the car system, and related protection measures are not seen in the weight balance system, however, the damage of the weight balance system can also directly cause the failure of the car system.
Disclosure of Invention
In order to solve the problems, the invention provides an elevator lifting safety protection system which can effectively protect the lifting of an elevator on the premise that the elevator effectively provides electric power support for each safety protection device and can also play a protection role when the elevator is in power failure.
In order to realize the aim, the elevator lifting safety protection system comprises a power taking device, an overspeed protection device, an interception device and an electric control device;
the electricity taking device comprises a contact wire penetrating through an elevator shaft and an electricity receiving mechanism arranged on the outer wall of the lift car, the contact wire is connected with commercial power, the top end of the electricity receiving mechanism is provided with an electricity receiving sliding plate, and the bottom end of the electricity receiving mechanism is connected with the outer wall of the lift car through a line pressing mechanism which enables the electricity receiving sliding plate to be always attached to the contact wire;
the overspeed protection device comprises a guide rail, a guide shoe and a speed monitoring sensor; the guide rail and the guide shoe are in concave-convex clamping clearance fit with each other, matched surfaces are made of magnetic conductive materials, the guide shoe is fixedly arranged on the inner wall of an elevator shaft along the moving direction of the elevator shaft, the position of the guide rail corresponding to the guide shoe is fixedly arranged on the outer wall of a lift car, a telescopic sliding component and a brake shoe are arranged on the guide shoe, an electromagnetic coil is arranged inside the telescopic sliding component, the telescopic direction of the telescopic sliding component is perpendicular to the inner matched surface of the guide shoe facing the guide rail, and the brake shoe is arranged on the inner matched surface of the guide rail through the telescopic sliding component; the speed monitoring sensor comprises a displacement sensor and a speed sensor, the displacement sensor is arranged in the elevator shaft, and the speed sensor is arranged on the car;
the intercepting device comprises a buffering component and a forced braking component; the buffer assembly is arranged at the bottom end of the car and/or the counterweight;
the forced braking assemblies are fixedly arranged in a plurality of groups along the circumferential direction of the elevator shaft and/or the counterweight shaft in a central symmetry manner, each group of forced braking assemblies comprises a plurality of forced braking mechanisms which are uniformly distributed and fixedly arranged on the inner wall of the elevator shaft and/or the counterweight shaft along the trend direction of the elevator shaft and/or the counterweight shaft, and each forced braking mechanism comprises a braking seat, a braking dragging claw, a strong spring and an electromagnetic control valve; the brake seat is fixedly arranged on the inner wall of the elevator shaft and/or the counterweight shaft; the brake dragging claw is arranged corresponding to the position of the buffer component, the longitudinal section of the brake dragging claw is in a triangular structure, one base angle position of the triangular structure is hinged to the brake seat, the other base angle position of the triangular structure is provided with a spring seat, the brake dragging claw is also provided with a hasp mechanism, and the brake seat is also provided with a limiting component for limiting the overturning angle of the brake dragging claw; one end of the strong spring is fixedly arranged on the brake seat, and the other end of the strong spring is abutted against the spring seat of the brake pawl; the electromagnetic control valve comprises an electromagnetic control telescopic lock tongue which is arranged corresponding to the hasp mechanism of the brake dragging claw;
the electric control device comprises a central processing unit, a balance guide control loop, a speed judgment loop, a car brake loop, an analog computation circuit and a car interception loop, wherein the central processing unit is internally provided with upper limit values of safe speed and dangerous speed, is respectively electrically connected with an electromagnetic coil, a speed monitoring sensor and an electromagnetic control valve inside the power receiving sliding plate and the telescopic sliding component, and is also electrically connected with an electric control system of the elevator.
As a further improvement scheme of the invention, the lap joint matching surface of the lock tongue of the electromagnetic control valve and the hasp mechanism of the brake dragging claw is an inclined surface structure, and the inclined surface structure is arranged corresponding to the turning-out direction of the brake dragging claw; a rotary travel switch is also arranged at the hinged position of the brake dragging claw; the intercepting device further comprises a braking dragging claw resetting mechanism, the braking dragging claw resetting mechanism comprises a following dragging claw resetting component arranged at the bottom end of the car and/or the counterweight and a well dragging claw resetting component arranged at the bottom end in the elevator well and/or the counterweight well, the following dragging claw resetting component and the well dragging claw resetting component respectively comprise a resetting plate arranged corresponding to the braking dragging claw, and the well dragging claw resetting component further comprises a track and a resetting plate traction component arranged along the moving direction of the elevator well and/or the counterweight well.
As a further improvement of the present invention, the speed monitoring sensor of the overspeed protection device further includes an acceleration sensor, the acceleration sensor is electrically connected to the central processing unit of the electric control device, and the central processing unit is internally provided with upper limit values of safe acceleration and dangerous acceleration.
As a further improvement of the present invention, the electric control device further comprises a wireless transceiver module, and the central processing unit performs data transmission in a wireless connection manner.
As a further improvement scheme of the invention, the guide rail is in a permanent magnet structure or is connected with an electromagnetic coil through a magnetic conduction material matching surface to form an electromagnet structure.
As a further improvement of the invention, the buffer assembly comprises a plurality of brake buffer blocks, and the brake buffer blocks are fixedly arranged at the bottom end of the car and/or the counterweight in a centrosymmetric manner.
As a further improvement of the present invention, the contact wire is made of a copper alloy material, and the current-receiving contact plate is made of a carbonaceous material.
An elevator comprises an elevator lifting safety protection system.
Compared with the prior art, the elevator lifting safety protection system adopts the power taking device in the form of contact wire and power receiving sliding plate contact power taking, so that the defects of redundancy and easy fatigue damage of the traditional power cable power taking mode are avoided; the overspeed protection device comprises a guide rail, a guide shoe and a speed monitoring sensor, the guide rail and the guide shoe are in concave-convex clamping clearance fit with each other, matched surfaces are made of magnetic conductive materials, a telescopic sliding component and a brake shoe are arranged on the guide shoe, an electromagnetic coil is arranged in the telescopic sliding component, the telescopic direction of the telescopic sliding component is perpendicular to the inner matched surface of the guide shoe facing the guide rail, and the brake shoe is arranged on the inner matched surface of the guide rail through the telescopic sliding component; because the intercepting device comprising the buffer assembly and the forced braking assembly is arranged, and the forced braking mechanism comprises the braking seat, the braking dragging claw, the strong spring and the electromagnetic control valve, when the moving speed of the car and/or the counterweight is beyond the upper limit value of the dangerous speed set by a program, the forced braking assembly positioned in a set distance below the car and/or the counterweight acts to enable the braking dragging claw of the forced braking mechanism in the distance to be rapidly overturned and popped out, and effective forced braking on the car and/or the counterweight is realized by sacrificing the potential energy absorption mode of the braking dragging claw; because the lap joint fitting surfaces of the lock tongue of the electromagnetic control valve and the hasp mechanisms of the brake dragging claws are inclined plane structures, and the intercepting device further comprises a brake dragging claw resetting mechanism, the brake dragging claws can push the lock tongue of the electromagnetic control valve open through the inclined plane structures under the elastic action of a strong spring and then flip out to prevent the lift car and/or the counterweight from accidentally falling under the power-off state, and the brake dragging claws can be reset through the brake dragging claw resetting mechanism after the power-off state is relieved to ensure the normal operation of the elevator.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 isbase:Sub>A partial sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of the construction of the positive brake assembly of the present invention;
FIG. 4 is a schematic structural view of the brake pawl of the positive brake assembly of the present invention in a flipped-out position;
fig. 5 is a schematic structural view of the intercepting apparatus of the present invention in an intercepting state.
In the figure: 1. the device comprises a power taking device 11, a power receiving mechanism 12, a power receiving sliding plate 2, an overspeed protection device 21, a guide rail 22, guide shoes 23, a telescopic sliding component 24, brake shoes 3, an interception device 31, a buffer component 32, a forced brake component 321, a brake base 322, brake dragging claws 323, a strong spring 324, an electromagnetic control valve 4 and a car.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the elevator lifting safety protection system comprises a power taking device 1, an overspeed protection device 2, an interception device 3 and an electric control device.
Get electric installation 1 including the contact wire that runs through the elevator well and install the mechanism 11 that receives electricity on the car 4 outer wall, the contact wire is connected with the commercial power, receive the top of mechanism 11 and install the slide 12 that receives electricity, the bottom passes through line ball mechanism and car 4 outer wall connection, line ball mechanism can make the slide 12 that receives electricity of receiving the mechanism 11 paste all the time and lean on the contact wire.
The overspeed protection device 2 comprises a guide rail 21, a guide shoe 22 and a speed monitoring sensor; the guide rail 21 and the guide shoe 22 are in concave-convex clamping clearance fit with each other, matched surfaces which are matched with each other are made of magnetic conductive materials, the guide shoe 22 is fixedly arranged on the inner wall of an elevator shaft along the moving direction of the elevator shaft, the position of the guide rail 21 corresponding to the guide shoe 22 is fixedly arranged on the outer wall of the elevator car 4, a telescopic sliding component 23 and a brake shoe 24 are arranged on the guide shoe 22, an electromagnetic coil is arranged inside the telescopic sliding component 23, the telescopic direction of the telescopic sliding component 23 is perpendicular to the matched surface of the guide shoe 22, which faces the inner side of the guide rail 21, and the brake shoe 24 is arranged on the matched surface of the inner side of the guide rail 21 through the telescopic sliding component 23; the speed monitoring sensor comprises a displacement sensor and a speed sensor, the displacement sensor is arranged in the elevator shaft, and the speed sensor is arranged on the car 4.
The intercepting device 3 comprises a buffer component 31 and a forced braking component 32;
the buffer assembly 31 is arranged at the bottom end of the car 4 and/or the counterweight;
the forced braking assemblies 32 are fixed and arranged in a plurality of groups along the circumferential direction of the elevator shaft and/or the counterweight shaft, each group of forced braking assemblies 32 comprises a plurality of forced braking mechanisms which are uniformly distributed and fixed on the inner wall of the elevator shaft and/or the counterweight shaft along the trend direction of the elevator shaft and/or the counterweight shaft, and as shown in fig. 3 and 4, each forced braking mechanism comprises a braking seat 321, a braking pawl 322, a strong spring 323 and an electromagnetic control valve 324; the brake seat 321 is fixedly arranged on the inner wall of the elevator shaft and/or the counterweight shaft; the brake drag claw 322 is arranged corresponding to the position of the buffer component 31, the longitudinal section of the brake drag claw 322 is in a triangular structure, one base angle position of the triangular structure is hinged to the brake seat 321, the other base angle position of the triangular structure is provided with a spring seat, the brake drag claw 322 is also provided with a hasp mechanism, and the brake seat 321 is also provided with a limiting component for limiting the overturning angle of the brake drag claw 322; one end of a strong spring 323 is fixedly arranged on the brake seat 321, and the other end of the strong spring is abutted against a spring seat of the brake pawl 322; the solenoid control valve 324 includes a solenoid controlled retractable latch that is positioned to correspond to the catch mechanism of the brake pawl 322.
The electric control device comprises a central processing unit, a balance guiding control loop, a speed judging loop, a car braking loop, an analog calculating circuit and a car intercepting loop, wherein the central processing unit is internally provided with upper limit values of safe speed and dangerous speed, is respectively and electrically connected with the electromagnetic coil, the speed monitoring sensor and the electromagnetic control valve 324 inside the power receiving sliding plate 12 and the telescopic sliding component 23, and is also electrically connected with an electric control system of the elevator.
Before the elevator lifting safety protection system is installed, a program needs to be input into a central processing unit, the program can judge the position of the car 4 and/or the counterweight according to signals fed back by displacement sensors vertically and equidistantly arranged in an elevator shaft and/or a counterweight shaft, and simulate and calculate the impact force according to the set weight of the car 4 and/or the counterweight, so as to judge the number and the distance of the forced braking assemblies 32 needing to act.
The elevator lifting safety protection system provides electric energy for the whole elevator lifting safety protection system through the electricity taking device 1, the electromagnetic control valve 324 is in a state that a lock tongue extends out of a hasp mechanism locked on the brake dragging claw 322 in an initial state, and at the moment, the strong spring 323 is in a fully compressed force accumulation state, and the brake dragging claw 322 is in a fully retracted state.
When the elevator is started, the speed judgment loop and the balance guide control loop work, the speed monitoring sensor feeds back the moving speed of the car 4 and/or the counterweight to the central processor in real time, when the speed monitoring sensor feeds back that the moving speed of the car 4 and/or the counterweight is within the upper limit value range of the safety speed set by a program, the central processor controls the electromagnetic coil in the telescopic sliding component 23 to enable the matching surfaces of the guide rail 21 and the guide shoe 22 which are mutually clamped in a concave-convex mode to generate a magnetic field with the same magnetic pole, and due to the fact that the magnetic poles repel each other in the same polarity, magnetic field mutual repulsion force is generated between the matching surfaces of the car 4 and/or the counterweight which are mutually clamped in a concave-convex mode in the lifting process of the car 4 and/or the counterweight, so that the guide shoe 22 provides balanced balance thrust for the guide rail 21 on the car 4 and/or the counterweight, suspension guide of the car 4 and/or the counterweight is achieved, and meanwhile, the telescopic sliding component 23 on the guide shoe 22 is pushed by the repulsive force to drive the brake shoe 24 to move in a direction away from the guide rail 21, so that the brake shoe 24 is attached to the inner side surface of the guide rail 22 and is far away from the guide rail 21;
when the speed monitoring sensor feeds back that the moving speed of the car 4 and/or the counterweight is in a range between the upper limit value of the safety speed and the upper limit value of the dangerous speed which are set by a program, the central processing unit controls the electromagnetic coil in the telescopic sliding part 23 to enable a magnetic field with opposite magnetic poles to be generated between matching surfaces of the guide rail 21 and the guide shoe 22 which are in concave-convex clamping with each other, and due to opposite magnetic poles, magnetic field suction force is generated between the matching surfaces of the car 4 and/or the counterweight which are in concave-convex clamping with each other in the lifting process of the car 4 and/or the counterweight, so that the guide shoe 22 provides balanced suction force for the guide rail 21 on the car 4 and/or the counterweight, and meanwhile, the balanced suction force pushes the telescopic sliding part 23 on the guide shoe 22 to drive the brake shoe 24 to move towards the direction close to the guide rail 21, so that the brake shoe 24 is attached to the matching surface of the guide rail 21 and is in a braking state of holding the guide rail 21 tightly;
when the speed monitoring sensor feeds back that the moving speed of the car 4 and/or the counterweight is outside the upper limit value range of the dangerous speed set by a program, namely serious faults such as rope breakage or traction motor runaway occur, the simulation computation circuit works and the car interception loop works, the central processing unit computes and controls the action of the electromagnetic control valve 324 of the forced braking mechanism positioned in a set distance below the car 4 and/or the counterweight through the position of the car 4 and/or the counterweight fed back by the displacement sensor so as to retract and drive the lock tongue to be separated from the hasp mechanism on the braking pawl 322, the strong spring 323 quickly releases elastic force to push the braking pawl 322 to pop out along the overturning hinge shaft of the braking pawl, as shown in fig. 5, the fast falling car 4 and/or the counterweight are knocked to fall on the closest layer of braking pawl 322 through the buffer assembly 31, the buffer assembly 31 and the closest layer of braking pawl 322 absorb part of falling potential energy, the too large potential energy of the fast falling car 4 and/or the counterweight continuously falls on the second layer of braking pawl 322 positioned below the closest layer of the car, and the fast falling potential energy is smashed by the brake pawl 322, and the fast falling and the collision is absorbed by the fast falling and the second layer of the car 4 and/or the counterweight, and the like; after the accident is processed, the buffer assembly 31 and/or the forced brake assembly 32 damaged by the collision can be replaced.
In order to protect the car 4 and/or the counterweight in case of power loss, as a further improvement of the present invention, the overlapping mating surfaces of the locking tongue of the electromagnetic control valve 324 and the snapping mechanism of the braking pawl 322 are inclined surface structures, and the inclined surface structures are arranged corresponding to the turning-out direction of the braking pawl 322; a rotary travel switch is also arranged at the hinged position of the brake dragging claw 322; the intercepting device 3 further comprises a braking drag claw resetting mechanism, the braking drag claw resetting mechanism comprises a following drag claw resetting component arranged at the bottom end of the car 4 and/or the counterweight and a hoistway drag claw resetting component arranged at the inner bottom end of the elevator hoistway and/or the counterweight hoistway, the following drag claw resetting component and the hoistway drag claw resetting component respectively comprise resetting plates arranged corresponding to the braking drag claws 322, and the hoistway drag claw resetting component further comprises a track and a resetting plate traction component arranged along the moving direction of the elevator hoistway and/or the counterweight hoistway; when the power loss condition occurs, the electromagnetic control valve 324 is in a power loss state, the brake dragging claw 322 pushes the lock tongue of the electromagnetic control valve 324 to turn out after pushing the lock tongue through an inclined plane structure arranged in the turning-out direction corresponding to the brake dragging claw 322 under the action of the elastic force of the strong spring 323, the car 4 and/or the counterweight can be prevented from falling down accidentally, after the power loss condition is relieved, the elevator shaft dragging claw resetting component can be dragged by the control resetting plate traction component to sequentially push the brake dragging claw 322 in the turning-out state below the car 4 and/or the counterweight to turn over and reset along a track, the brake dragging claw 322 in the turning-out state above the car 4 and/or the counterweight can be sequentially pushed by the car 4 and/or the follower dragging claw resetting component at the bottom end of the counterweight to turn over and reset during the upward process of the car 4 and/or the counterweight, and the lock tongue of the electromagnetic control valve 324 is controlled by the action of a rotary stroke switch during the turning over and resetting process of the brake dragging claw 322.
In order to improve the reaction speed and ensure timely and effective control in the moving process of the elevator car 4 and/or the counterweight, as a further improvement scheme of the invention, the speed monitoring sensor of the overspeed protection device 2 further comprises an acceleration sensor, the acceleration sensor is electrically connected with a central processing unit of the electric control device, and the central processing unit is internally provided with upper limit values of safe acceleration and dangerous acceleration. By monitoring the speed and acceleration of movement of the elevator car 4 and/or counterweight simultaneously it is possible to ensure timely and effective control of the movement of the elevator car 4 and/or counterweight.
As the sensors and the forced braking mechanisms are arranged more, in order to avoid arranging more lines in the elevator shaft and/or the counterweight shaft, as a further improvement scheme of the invention, the electric control device also comprises a wireless transceiving module, and a central processing unit transmits data in a wireless connection mode.
In order to further improve the effects of levitation guidance and magnetic braking, as a further improvement of the present invention, the guide rail 21 is in a permanent magnet structure or is connected with an electromagnetic coil through a magnetic conductive material matching surface to form an electromagnet structure.
In order to reduce the overall weight of the buffer assembly 31 and the overall power consumption, as a further improvement of the present invention, the buffer assembly 31 includes a plurality of brake buffers, and the brake buffers are centrally symmetrically and fixedly mounted at the bottom end of the car 4 and/or the counterweight.
In order to ensure the wear resistance and the effectiveness of power transmission, as a further improvement of the present invention, the contact line is made of a copper alloy material, and the contact strip 12 is made of a carbonaceous material.
The elevator lifting safety protection system not only can be applied to the elevator which can vertically lift, but also can be applied to lifting and transporting equipment such as mine cages with vertical shafts, and is also applicable to inclined elevators with counterweight devices.
The elevator lifting safety protection system adopts the power taking device 1 in the form of contacting a contact wire with the power receiving sliding plate 12 to take power, so that the defects of redundancy and easy fatigue damage of the traditional power cable power taking mode are overcome; because the overspeed protection device 2 comprises the guide rail 21, the guide shoe 22 and the speed monitoring sensor, the guide rail 21 and the guide shoe 22 are in concave-convex clamping clearance fit with each other, and the matched surfaces of the guide rail 21 and the guide shoe 22 are made of magnetic conductive materials, the guide shoe 22 is provided with the telescopic sliding component 23 and the brake shoe 24, the telescopic sliding component 23 is internally provided with the electromagnetic coil, the telescopic direction of the telescopic sliding component 23 is perpendicular to the matched surface of the guide shoe 22 facing the inner side of the guide rail 21, and the brake shoe 24 is arranged on the matched surface of the inner side of the guide rail 21 through the telescopic sliding component 23, when the moving speed of the car 4 and/or the counterweight is within the upper limit value range of safe speed, the electromagnetic coil in the telescopic sliding component 23 enables the magnetic field with the same magnetic pole to be generated between the matched surfaces of the concave-convex clamping of the guide rail 21 and the guide shoe 22 to realize the suspension guidance of the car 4 and/or the counterweight, and the brake shoe 24 is in a state far away from the guide rail 21, and when the moving speed of the car 4 and/or the counterweight is beyond the upper limit value of the safe speed, the electromagnetic coil in the direction of the brake shoe 23, the brake shoe 21 is close to the brake shoe 21 to the brake shoe to realize the brake shoe brake state; because the intercepting device 3 comprising the buffer assembly 31 and the forced braking assembly 32 is arranged, and the forced braking mechanism comprises the brake seat 321, the brake dragging claw 322, the strong spring 323 and the electromagnetic control valve 324, when the moving speed of the car 4 and/or the counterweight is beyond the upper limit value of the dangerous speed set by a program, the forced braking assembly 32 positioned in the set distance below the car 4 and/or the counterweight acts to enable the brake dragging claw 322 of the forced braking mechanism in the distance to be rapidly overturned and popped up, and effective forced braking is implemented on the car 4 and/or the counterweight by sacrificing the potential energy absorption mode of the brake dragging claw 322; because the lap joint surfaces of the lock tongue of the electromagnetic control valve 324 and the hasp mechanism of the brake pawl 322 are inclined plane structures, and the intercepting device 3 further comprises a brake pawl resetting mechanism, the brake pawl 322 can push the lock tongue of the electromagnetic control valve 324 to be overturned out to prevent the car 4 and/or the counterweight from accidentally falling under the action of the elastic force of the strong spring 323 under the power-off state, and the brake pawl resetting mechanism can reset the brake pawl 322 to ensure the normal operation of the elevator after the power-off condition is relieved.
Claims (7)
1. An elevator lifting safety protection system comprises a power taking device (1), an overspeed protection device (2), an interception device (3) and an electric control device; it is characterized in that the preparation method is characterized in that,
the electricity taking device (1) comprises a contact wire penetrating through an elevator shaft and a power receiving mechanism (11) arranged on the outer wall of the elevator car (4), the contact wire is connected with a mains supply, a power receiving sliding plate (12) is arranged at the top end of the power receiving mechanism (11), and the bottom end of the power receiving mechanism is connected with the outer wall of the elevator car (4) through a line pressing mechanism which enables the power receiving sliding plate (12) to be always attached to the contact wire;
the overspeed protection device (2) comprises a guide rail (21), a guide shoe (22) and a speed monitoring sensor; the guide rail (21) and the guide shoe (22) are in concave-convex clamping clearance fit with each other, matched surfaces which are matched with each other are made of magnetic conductive materials, the guide shoe (22) is fixedly arranged on the inner wall of an elevator shaft along the moving direction of the elevator shaft, the guide rail (21) is fixedly arranged on the outer wall of the elevator car (4) corresponding to the position of the guide shoe (22), a telescopic sliding component (23) and a brake shoe (24) are arranged on the guide shoe (22), an electromagnetic coil is arranged in the telescopic sliding component (23), the telescopic direction of the telescopic sliding component (23) is perpendicular to the inner matched surface of the guide shoe (22) facing the guide rail (21), and the brake shoe (24) is arranged on the inner matched surface of the guide rail (21) through the telescopic sliding component (23); the speed monitoring sensor comprises a displacement sensor and a speed sensor, the displacement sensor is arranged in the elevator shaft, and the speed sensor is arranged on the car (4);
the intercepting device (3) comprises a buffer component (31), a forced braking component (32) and a braking dragging claw resetting mechanism; the buffer component (31) is arranged at the bottom end of the car (4) and/or the counterweight;
the forced braking assemblies (32) are symmetrically and fixedly arranged in a plurality of groups along the circumferential direction of the elevator shaft and/or the counterweight shaft, each group of forced braking assemblies (32) comprises a plurality of forced braking mechanisms which are uniformly distributed and fixedly arranged on the inner wall of the elevator shaft and/or the counterweight shaft along the trend direction of the elevator shaft and/or the counterweight shaft, and each forced braking mechanism comprises a braking seat (321), a braking dragging claw (322), a strong spring (323) and an electromagnetic control valve (324); the brake seat (321) is fixedly arranged on the inner wall of the elevator shaft and/or the counterweight shaft; the brake dragging claw (322) is arranged corresponding to the position of the buffer component (31), the longitudinal section of the brake dragging claw (322) is of a triangular structure, one bottom corner position of the triangular structure is hinged to the brake base (321), a rotary travel switch is arranged at the hinged position, a spring base is arranged at the other bottom corner position of the triangular structure, a hasp mechanism is further arranged on the brake dragging claw (322), and a limiting component for limiting the overturning angle of the brake dragging claw (322) is further arranged on the brake base (321); one end of a strong spring (323) is fixedly arranged on the brake seat (321), and the other end of the strong spring is propped against a spring seat of the brake dragging claw (322); the electromagnetic control valve (324) comprises an electromagnetic control telescopic lock tongue, the lock tongue is arranged corresponding to the hasp mechanism of the brake dragging claw (322), the lap joint matching surface of the lock tongue of the electromagnetic control valve (324) and the hasp mechanism of the brake dragging claw (322) is an inclined surface structure, and the inclined surface structure is arranged corresponding to the turning-out direction of the brake dragging claw (322);
the braking dragging claw resetting mechanism comprises a following dragging claw resetting component arranged at the bottom end of the lift car (4) and/or the counterweight and a well dragging claw resetting component arranged at the inner bottom end of the lift well and/or the counterweight well, the following dragging claw resetting component and the well dragging claw resetting component respectively comprise resetting plates arranged corresponding to the braking dragging claws (322), and the well dragging claw resetting component also comprises a track and a resetting plate traction component arranged along the moving direction of the lift well and/or the counterweight well;
the electric control device comprises a central processing unit, a balance guide control loop, a speed judgment loop, a car brake loop, a simulation calculation circuit and a car interception loop, wherein the central processing unit is internally provided with upper limit values of safe speed and dangerous speed, is respectively and electrically connected with the current-receiving sliding plate (12), an electromagnetic coil inside the telescopic sliding component (23), a speed monitoring sensor and an electromagnetic control valve (324), and is also electrically connected with an electric control system of the elevator;
when the power loss occurs, the electromagnetic control valve (324) is in a power loss state, the brake dragging claw (322) pushes the lock tongue of the electromagnetic control valve (324) open through an inclined plane structure arranged corresponding to the turning-out direction of the brake dragging claw (322) under the elastic force action of a strong spring (323) and then turns out; when the power loss situation is relieved, the hoistway dragging claw resetting component is dragged by the control resetting plate traction component to move upwards along the track to sequentially push the turning-out braking dragging claws (322) positioned below the car (4) and/or the counterweight to turn over and reset, the turning-out braking dragging claws (322) positioned above the car (4) and/or the counterweight are sequentially pushed by the following dragging claw resetting component at the bottom end of the car (4) and/or the counterweight to turn over and reset in the ascending process of the car (4) and/or the counterweight, and the rotating stroke switch acts to control the bolt of the electromagnetic control valve (324) to extend out for locking in the turning-over resetting process of the braking dragging claws (322).
2. The elevator lifting safety protection system according to claim 1, characterized in that the speed monitoring sensor of the overspeed protection device (2) further comprises an acceleration sensor, the acceleration sensor is electrically connected with the central processing unit of the electric control device, and the central processing unit is internally provided with upper limit values of safe acceleration and dangerous acceleration.
3. The elevator lifting safety protection system of claim 2, wherein the electrical control device further comprises a wireless transceiver module, and the central processing unit performs data transmission in a wireless connection manner.
4. The elevator lifting safety protection system according to claim 3, characterized in that the guide rail (21) is a permanent magnet structure or an electromagnet structure formed by connecting an electromagnetic coil through a magnetic conductive material matching surface.
5. Elevator lift safety protection system according to claim 4, characterized in that the buffer assembly (31) comprises a plurality of brake buffers, which are centrally symmetrically and fixedly mounted at the bottom end of the car (4) and/or counterweight.
6. The elevator lifting safety system of claim 5, wherein the contact wire is made of a copper alloy material, and the contact plate (12) is made of a carbonaceous material.
7. An elevator characterized by comprising an elevator hoisting safety system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513706.1A CN107082335B (en) | 2017-06-29 | 2017-06-29 | Elevator lift safety protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513706.1A CN107082335B (en) | 2017-06-29 | 2017-06-29 | Elevator lift safety protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107082335A CN107082335A (en) | 2017-08-22 |
| CN107082335B true CN107082335B (en) | 2023-01-31 |
Family
ID=59607251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710513706.1A Active CN107082335B (en) | 2017-06-29 | 2017-06-29 | Elevator lift safety protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107082335B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285157A (en) * | 2017-08-25 | 2017-10-24 | 张家港市优希宏达机电厂 | It is multi-functional to prevent slippery cage sedan-chair |
| CN108639896A (en) * | 2018-07-12 | 2018-10-12 | 苏州福特美福电梯有限公司 | A kind of elevator with falling guard |
| CN109678025B (en) * | 2018-11-22 | 2023-10-27 | 迈格钠磁动力股份有限公司 | Fall-preventing safety elevator system |
| CN109279470A (en) * | 2018-11-22 | 2019-01-29 | 迈格钠磁动力股份有限公司 | A kind of Elevator landing security protection system |
| CN113003364B (en) * | 2021-02-23 | 2023-08-15 | 美卓矿山安全设备（徐州）有限公司 | Cage with safety device |
| CN113060615B (en) * | 2021-04-07 | 2022-04-08 | 瑞姆沃（苏州）系统科技有限公司 | Quick response's combined type elevator braking protection device |
| CN115072519A (en) * | 2022-07-04 | 2022-09-20 | 宁夏通宇电梯制造发展股份有限公司 | Elevator with prevent weighing down scour protection top safety alarm aggregate unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1429181A (en) * | 1972-01-31 | 1976-03-24 | Ratcliff Tail Lifts Ltd | Safety devices for vehicle tail lifts |
| CN106429706A (en) * | 2016-09-26 | 2017-02-22 | 苏州博量电梯科技有限公司 | Accidental movement preventing elevator controller and method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4118513B2 (en) * | 1998-02-26 | 2008-07-16 | 三菱電機株式会社 | Inspection and adjustment methods for elevator governors |
| CN2447312Y (en) * | 2000-10-17 | 2001-09-12 | 虞戟 | Floor-levelling block for elevator car |
| CN101219744B (en) * | 2007-12-13 | 2011-05-04 | 西子奥的斯电梯有限公司 | Elevator without trailing cable, elevator control information transmission system and elevator guide rail |
| CN102040139A (en) * | 2009-10-15 | 2011-05-04 | 河南理工大学 | Direct drive type hoist with boosting caliper brake |
| CN101966950B (en) * | 2010-09-17 | 2012-09-19 | 江门市蒙德电气股份有限公司 | Elevator magnetic guide device and guide brake device |
| CN102887409B (en) * | 2012-10-09 | 2015-07-29 | 长春理工大学 | A kind of vertical lift elevator fall protection equipment |
| CN205210629U (en) * | 2015-10-30 | 2016-05-04 | 徐州德坤电气科技有限公司 | Maintenance part is maintained on power transmission and transformation intelligence monitoring maintenance system's ground |
| CN105375384B (en) * | 2015-10-30 | 2018-05-18 | 徐州德坤电气科技有限公司 | The maintaining unit and application method of a kind of power transmission and transformation intelligent monitoring maintenance system |
| CN206901522U (en) * | 2017-06-29 | 2018-01-19 | 徐州德坤电气科技有限公司 | Elevator lifting security protection system |
-
2017
- 2017-06-29 CN CN201710513706.1A patent/CN107082335B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1429181A (en) * | 1972-01-31 | 1976-03-24 | Ratcliff Tail Lifts Ltd | Safety devices for vehicle tail lifts |
| CN106429706A (en) * | 2016-09-26 | 2017-02-22 | 苏州博量电梯科技有限公司 | Accidental movement preventing elevator controller and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107082335A (en) | 2017-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107082335B (en) | Elevator lift safety protection system | |
| CN102887409B (en) | A kind of vertical lift elevator fall protection equipment | |
| CN102897624B (en) | Fall-prevention safety protection device for vertical lift elevator | |
| CN208120493U (en) | The slow safety guard of elevator permanent-magnet and elevator | |
| CN105384033A (en) | Permanent magnet emergency slowing-down device used for lifting type elevator | |
| CN102674108B (en) | Electronic control brake device for elevator cage | |
| CN204938625U (en) | Used during elevator falling fender guard | |
| CN105329740A (en) | Elevator falling protective device | |
| CN204958043U (en) | Elevator with anti -falling device | |
| CN104724565A (en) | Elevator brake device with trigger mechanism | |
| CN103306530A (en) | Car bearing plate falling prevention device of mechanical parking equipment | |
| CN107089570B (en) | A kind of elevator lifting security protection system control method | |
| CN110240031B (en) | Car mechanical stopping device | |
| CN111942989A (en) | Construction elevator security protection device for construction | |
| CN109678025B (en) | Fall-preventing safety elevator system | |
| CN203529648U (en) | Bi-directional speed limiter | |
| CN110316636A (en) | A kind of safety device that no foundation pit installation elevator controlling rushes to summit and falls | |
| CN108217365B (en) | A kind of disconnected safety guard and the method for restricting of high rise elevator | |
| CN206108606U (en) | Elevator overspeed protective device | |
| CN202810300U (en) | Safeguard system of stereo garage | |
| CN206901522U (en) | Elevator lifting security protection system | |
| CN105836566A (en) | Emergency protective device for elevator car | |
| CN108298401A (en) | The protective device and control method at a kind of elevator preventing colliding with top and crouching bottom | |
| CN105923518A (en) | Door locking mechanism | |
| CN104944247B (en) | Novel safety device for elevator falling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |