CN107043052B

CN107043052B - Device and method for detecting and controlling safety of host of elevator without machine room

Info

Publication number: CN107043052B
Application number: CN201710156737.6A
Authority: CN
Inventors: 彭晓炜; 谭峥嵘
Original assignee: Guangzhou Guangri Elevator Industry Co Ltd
Current assignee: Guangzhou Guangri Elevator Industry Co Ltd
Priority date: 2017-03-16
Filing date: 2017-03-16
Publication date: 2023-01-24
Anticipated expiration: 2037-03-16
Also published as: CN107043052A

Abstract

The invention provides a safety detection control device and method for a machine-room-less elevator host, which comprises a mounting frame, a detection switch arranged on the mounting frame, a controller connected with the detection switch and forming a control loop, and a striking plate arranged on the elevator host and used for actuating the detection switch to close the control loop when the elevator host overturns, wherein the striking plate actuates the detection switch to close the control loop, and the controller controls the elevator to operate according to an output signal fed back by the detection switch. The invention provides a safety detection control device for a machine room-less elevator host, which can detect whether the elevator host reaches a preset inclination angle and control the operation of an elevator.

Description

Device and method for detecting and controlling safety of host of elevator without machine room

Technical Field

The invention relates to a device and a method for detecting and controlling the safety of a host of a machine room-less elevator.

Background

At present, various large elevator manufacturers without a machine room pursue extremely-intensive space utilization to embody the advantages of the elevator without the machine room, so that the continuously-compressed hoistway space puts higher requirements on the installation of an elevator main machine, and the main machine frame is more and more concise and compact in arrangement. As shown in fig. 1, the main body of the elevator is stressed mainly by two parts, namely the self weight G of the main body of the elevator 1 and the load F of the main shaft 2, wherein the load F comprises the self weight of the car, the load, the weight of the counterweight, a steel wire rope, a compensation chain and the like. The resultant mechanism force is T = G + F, and the center of gravity falls between G and F, and moves to the F side as the car load increases. The machine room host machine has large space arrangement in the machine room, the frame span is large, the shockproof rubber supporting points can be arranged at two ends of the mechanism which are relatively far away from the gravity center, the whole stress is relatively balanced, the influence of the gravity center change on the mechanism is small, and the stability is high. And ordinary host computer overhead formula does not have computer lab elevator, in order to improve the well utilization ratio, the host computer generally sets up in the narrow and small space in the middle of to heavy top car and well wall, and in order to reduce vibrations and the noise of host computer in the well, the host computer all can set up shockproof rubber, compare with the installation of computer lab host computer, shockproof rubber fulcrum can' T set up at the focus both ends of keeping away from like there being the computer lab, narrow and small installation space leads to the rubber fulcrum position of host computer base to concentrate more, consequently, whole host computer mounting structure stability is lower relatively, along with T is skew toward the F side, the host computer tendency of toppling also is more obvious. Slight deviation of production and installation, variation of host bearing and the like have larger influence on the swing angle of the host. And the host computer declination is too big to when existing for a long time, no matter be to damping rubber's antifatigue, still there is great influence in the rationality of mechanical structure atress, be unfavorable for the holistic structural stability of host computer installation mechanism, also can influence even to wire rope's frictional force, certain potential safety hazard can exist in elevator continuous operation under this state. And the declination of the main engine is slightly changed, and the main engine arrangement environment without a machine room is in the hoistway, so that the state is more difficult to perceive. Therefore, how to effectively detect and control the inclination condition of the machine-room-less host machine is an important function which cannot be ignored by the new-generation elevator product, i.e. the machine-room-less elevator.

Disclosure of Invention

Based on the above disadvantages, an aspect of the present invention is to provide a safety detection control device for a machine room-less elevator main machine, which can detect whether the elevator main machine reaches a predetermined inclination angle and control the operation of an elevator.

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

the machine-room-less elevator host safety detection control device comprises a mounting frame, a detection switch arranged on the mounting frame, a controller connected with the detection switch and forming a control loop, and a beating plate arranged on an elevator host and used for actuating the detection switch to close the control loop when the elevator host overturns, wherein the beating plate actuates the detection switch to close the control loop, and the controller controls the elevator to run according to an output signal fed back by the detection switch.

The mounting frame is provided with a mounting seat, a long circular hole is formed in the mounting seat in the direction perpendicular to the beating plate, and the detection switch is fixed to the long circular hole through a bolt and a nut.

The mounting rack is fixed on the elevator guide rail through a pressure code.

The mounting bracket is in including setting up prevent the baffle that the elevator host computer topples on the elevator host computer.

And a shock absorption pad is arranged between the baffle and the host machine.

The mounting bracket is square frame, and damping rubber sets up the bottom of mounting bracket, detection switch sets up the top of mounting bracket.

The safety control system also comprises a safety switch for detecting whether the car is suddenly stopped due to the disconnection of the safety circuit, a door lock switch for detecting whether the car is suddenly stopped due to the disconnection of the door lock circuit and an overload switch for detecting whether the elevator is overloaded, wherein the overload switch, the safety switch and the door lock switch are all electrically connected with the controller.

The intelligent alarm device further comprises an alarm module and a frequency conversion module, wherein the alarm module and the frequency conversion module are connected with the controller.

By adopting the technical scheme, the invention achieves the following technical effects:

(1) The main machine safety detection control device of the elevator without the machine room is characterized in that a hitting board is arranged on the main machine, when the main machine inclines, the hitting board touches a detection switch, a control loop is closed, a signal point of a controller is connected, a corresponding instruction is sent out, the operation of the elevator is controlled, an alarm signal is sent out, and fault information is prompted;

(2) The mounting seat is provided with a long round hole along the direction vertical to the knock plate, so that the distance between the detection switch and the knock plate can be adjusted, and the maximum inclination angle of the elevator main machine can be adjusted;

(3) A shock pad is arranged between the mounting plate and the elevator main machine, can bear the overturning moment of the main machine and has the shock absorption effect in the horizontal direction;

(4) The detection switch is arranged on the mounting frame and far away from the position of the damping rubber, the action deviation of the detection switch accounts for the proportion of the total stroke, and the influence on the detection angle is smaller.

Another aspect of the present invention is to provide a method for detecting and controlling an inclination angle of an elevator machine based on the above device for detecting and controlling the safety of an elevator machine without machine room, the method comprising the following steps:

(1) Detecting the action of a switch during the running of the elevator, judging whether the abnormal condition exists or not, and controlling the condition with higher priority to cause the emergency stop of the elevator car, if so, entering the step (2) after the elevator returns to normal; if not, controlling the elevator to operate to a position close to the landing flat layer to open the door at the maintenance speed or normal speed, and sending an alarm sound for reminding passengers to leave the car;

(2) Judging whether the detection switch returns to the non-action state, if so, executing the step (3), and if not, executing the step (4);

(3) Recording and displaying a fault code 1, accumulating the action times, and judging whether the action times reach N times, if so, executing the step (4), otherwise, returning to the step (1);

(4) And recording a fault code 2, opening the elevator door of the elevator on the flat floor, continuously giving out an alarm sound to prevent passengers from entering the elevator, and waiting for maintenance and maintenance staff to deal with the problem of the inclination angle of the host.

The step (1) comprises the following steps:

(11) The elevator normally runs, the switch action is detected, and the step (12) is executed;

(12) Judging whether a safety loop and a door lock loop are in emergency stop caused by disconnection of the car, if so, entering the step (2) after the elevator is completely stopped and stabilized; if not, executing step (13);

(13) Judging whether the elevator overload switch outputs a signal or not, if so, entering the step (2) after the overload state is relieved; if not, the elevator is controlled to run to a position close to the landing flat layer to open the door at the maintenance speed or the normal speed, and an alarm sound for reminding passengers to leave the car is sent out.

the safety detection control method for the main machine of the elevator without the machine room can judge whether the inclination angle of the main machine of the elevator temporarily exceeds the allowable value due to abnormal conditions or not, then judge the inclination angle of the main machine of the elevator, output a control command, avoid the confusion of the output command and eliminate the possibility of false operation as much as possible, reduce the workload of maintenance and repair personnel and reduce the influence on passenger riding experience.

Drawings

Fig. 1 is a detection structure diagram of a host machine of a machine room free elevator in the background art;

fig. 2 is a structural view of the safety detection control device of the main machine of the elevator without machine room of the invention;

FIG. 3 is an enlarged view at I of FIG. 2;

FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 2;

fig. 5 is an operation principle diagram of the elevator main machine detection control device of the invention;

fig. 6 is a control schematic diagram of the elevator main machine detection control device of the invention.

Detailed Description

As shown in fig. 2-6, the safety detection control device for the main machine of the elevator without machine room of the invention comprises

The elevator control device comprises an installation frame 3, a detection switch 4 arranged on the installation frame 3, a controller 11 connected with the detection switch 4 and forming a control loop, and a beating plate 6 arranged on an elevator host 1 and used for actuating the detection switch 4 to close the control loop when the elevator host 1 overturns, wherein the beating plate 6 actuates the detection switch 1 to close the control loop, and the controller 11 controls the elevator to run according to an output signal fed back by the detection switch 4. The knock plate touches the detection switch to close the control loop, and the controller controls the elevator to run mainly through the circuit connection of the detection switch and the controller.

As shown in fig. 2-4, the knock plate 6 is fixed on the elevator main machine 1 by bolts through a preformed hole or a hoisting hole of the elevator main machine 1, the knock plate 6 is in a strip shape, and the upper part of the knock plate extends out of the top of the elevator main machine 1. The mounting frame 3 is fixed on the elevator guide rail through a pressure code. The mounting frame 3 includes a mounting plate 31 disposed above the elevator main machine 1. The mounting plate 31 is provided with a mounting seat 32, the mounting seat 32 is provided with a long circular hole 321 along a direction perpendicular to the hitting plate, the detection switch is fixed on the long circular hole 321 through a bolt and a nut, the position of the detection switch 4 in the button action direction can be adjusted through the long circular hole 321, the distance from the detection switch to the hitting plate can be adjusted, and then the maximum inclination angle can be adjusted. The mounting plate 31 is provided above the elevator machine 1, and the mounting plate 31 can also serve as a baffle plate for preventing the elevator machine 1 from overturning. A shock pad 5 can be arranged between the mounting plate 31 and the elevator main machine 1 to bear the overturning moment of the main machine and play a role in horizontal shock absorption. It should be noted that shock pad 5 can not be tightly connected at elevator host computer and mounting panel both ends simultaneously this moment, avoids shock pad 5 to receive longitudinal shear force and influence the atress condition of shock pad 5. The detection switch is arranged on the mounting frame and far away from the position of the damping rubber.

As shown in fig. 5, the operation principle of the host safety detection control device of the elevator without machine room is as follows: when the main machine inclines, the beating plate 6 fixed on the elevator main machine 1 is driven to swing, and when the inclination angle reaches an allowable value alpha, the beating plate 6 touches the detection switch 4. Wherein, beat the setting of 6 and 4 clearance values L of detecting switch, according to the actual requirement that corresponds the elevator host computer and arrange, can refer to GB10060-2011 elevator installation and accept standard generally, the requirement "the straightness that hangs down of hauler and leading wheel rim terminal surface relative horizontal plane is all ineligible to be greater than 4/1000 under no load or full load operating mode of 5.1.7.5. From fig. 5, it can be seen that tan α = L/H, when the allowable deflection angle α is fixed, the larger the H value is, the larger the L value is, the production deviation, the installation and adjustment deviation, the smaller the proportion of the operation deviation of the detection switch (e.g., the operation deviation value is ± 0.8 mm) to the total stroke is, and the smaller the influence on the detection angle is. Therefore, the mounting bracket is made into a square frame, the elevator main machine is installed in the mounting bracket, the damping rubber is arranged at the bottom of the mounting bracket 3, the detection switch 4 is arranged at the top of the mounting bracket 3, the damping rubber under the elevator main machine is kept away, and the accuracy of angle detection is also guaranteed. In addition, also can be through increasing and decreasing the gasket on the shock pad 5 between mounting panel 31 and host computer 1, through the compressive capacity that changes rubber, make the resilience force of rubber and the power of toppling of host computer obtain a better balance for no matter the host computer is in no-load or full load operating mode, inclination all can be adjusted, guarantees to control at reasonable within range. The counterweight and the lift car can be lifted, so that the steel wire rope is in a loose state, the bolt on one side of the damping pad 5 between the mounting plate and the elevator main machine is loosened, the main machine is slightly inclined backwards due to the self gravity G, the opening gasket can be inserted into or taken out of the damping pad 5, and the gravity of the lift car and the counterweight is released after the completion.

Fig. 6 is a control schematic diagram of a safety detection control device of a main machine of an elevator without a machine room. The detection switch 4, the overload switch 10, the safety switch 7 and the door lock switch 8 are electrically connected with the controller 11, the controller 11 is also electrically connected with the alarm module 9 and the frequency conversion module 12 respectively, the safety switch 7 is used for detecting whether an internal contracting brake caused by a safety loop is instantaneously released, the door lock switch 8 is used for detecting whether a car is suddenly stopped caused by the disconnection of a door lock loop, and the overload switch 10 is used for detecting whether an elevator is overloaded. When the detection switch 4, the overload switch 10, the safety switch 7 or the door lock switch 8 act, the controller 11 controls the alarm module 9 to send out an alarm signal and controls the frequency conversion module 12 to control the operation of the elevator, wherein the frequency conversion module can be an elevator frequency converter. When the striking plate 6 touches the detection switch 4, the detection signal loop is closed, and the corresponding signal point of the controller mainboard is switched on. At this time, the controller 11 outputs a corresponding control command in accordance with signals fed back from the overload switch 10, the safety switch 7, and the door lock switch 8.

The invention also provides a safety detection control method for the main machine of the elevator without the machine room, which comprises the following steps:

(1) The elevator normally runs, the switch action is detected, the detection loop is closed, and the step (2) is executed;

(2) The controller judges whether the car is suddenly stopped due to the instantaneous release of a contracting brake caused by the disconnection of a safety loop, a door lock loop and the like according to a safety loop detection signal detected by the safety switch 7 and a door lock loop detection signal detected by the door lock switch 8, if so, the car obtains extra instantaneous impact load, the whole elevator is in an unstable state, the swinging of the main machine is more violent, and the detection switch is also triggered to act, but the main machine belongs to the emergency brake control category with higher control priority, and the main machine inclination angle detection program does not output a control command at first and enters the step (5) after the elevator is completely stopped and stabilized; if not, executing the step (3); the safety switch 7 can be a speed limiter, a safety gear switch and the like, and is used for detecting whether the car is suddenly stopped due to a safety loop; the door lock switch 8 is used for detecting whether the car is suddenly stopped due to the disconnection of a door lock loop;

(3) Judging whether the elevator overload switch 10 outputs a signal, if so, judging whether the inclination angle of the main machine exceeds an allowable value or not, but is not in a working condition from no-load to full-load required by people at the moment, so that the inclination angle detection program of the main machine does not output a control instruction, and entering the step (5) after the overload state is relieved; if not, executing the step (4);

(4) The elevator runs to a nearby landing flat layer at the overhaul speed, and the elevator opens a door, and gives out an alarm sound to remind passengers to leave the elevator car;

(5) Judging whether the detection switch returns to the non-action state, if so, executing the step (6), and if not, executing the step (7);

(6) Recording and displaying the fault code 1, accumulating the action times, and judging whether the action times reach N times, if so, executing the step (7), otherwise, returning to the step (1);

(7) And recording a fault code 2, opening a lift door of the elevator on a flat floor, continuously giving out an alarm sound to prevent passengers from entering the elevator, and waiting for maintenance and repair personnel to deal with the problem of the inclination angle of the host.

The safety detection control method for the main machine of the elevator without the machine room can judge whether the inclination angle of the main machine transiently exceeds the allowable value due to the unreasonable use of the elevator under the extreme working conditions such as emergency stop and the like or severe overload and the like, avoid the disorder of output instructions and eliminate the possibility of false operation as much as possible, reduce the workload of maintenance and repair personnel and reduce the influence on passenger riding experience.

The elevator without the machine room is monitored in the using process, the host installation structure is ensured to be in a reasonable state, the service life of the elevator is prolonged, and the safety performance of the elevator is improved. And meanwhile, a reasonable control program is set, so that the influence of the detection control device on the normal use of the elevator is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a no computer lab elevator host computer safety inspection controlling means which characterized in that: the elevator control system comprises a mounting frame, a detection switch arranged on the mounting frame, a controller connected with the detection switch and forming a control loop, and a striking plate arranged on an elevator host and used for actuating the detection switch to close the control loop when the elevator host overturns, wherein the striking plate actuates the detection switch to close the control loop, and the controller controls the elevator to operate according to an output signal fed back by the detection switch;

the mounting frame comprises a baffle plate which is arranged on the elevator main machine and used for preventing the elevator main machine from overturning, a shock pad is arranged between the baffle plate and the elevator main machine, and the shock pad bears the overturning moment of the main machine and plays a role in horizontal shock absorption;

the mounting frame is provided with a mounting seat, a long circular hole is formed in the mounting seat in the direction perpendicular to the beating plate, and the detection switch is fixed on the long circular hole through a bolt and a nut;

the mounting frame is fixed on the elevator guide rail through a pressure code;

the mounting frame is a square frame, the damping rubber is arranged at the bottom of the mounting frame, and the detection switch is arranged at the top of the mounting frame;

the elevator safety protection system also comprises a safety switch for detecting whether the car is suddenly stopped due to disconnection of the safety loop, a door lock switch for detecting whether the car is suddenly stopped due to disconnection of the door lock loop and an overload switch for detecting whether the elevator is overloaded, wherein the overload switch, the safety switch and the door lock switch are all connected with the controller;

2. An elevator main machine inclination angle detection control method based on the machine room free elevator main machine safety detection control device of claim 1, characterized by comprising the following steps:

(1) Detecting the action of a switch during the running of the elevator, judging whether the situation is abnormal or not, and controlling the condition with higher priority to cause the emergency stop of the elevator car, if so, entering the step (2) after the elevator returns to normal; if not, controlling the elevator to operate to a position close to the landing flat layer to open the door at the maintenance speed or normal speed, and sending an alarm sound for reminding passengers to leave the car;

3. The method of claim 2, wherein the step (1) comprises the steps of:

(12) Judging whether a safety loop and a door lock loop are disconnected to cause the emergency stop of the lift car, if so, entering the step (2) after the lift is completely stopped and stabilized; if not, executing step (13);

(13) Judging whether the elevator overload switch outputs a signal or not, if so, entering the step (2) after the overload state is relieved; if not, the elevator is controlled to operate to the position where the elevator is located at the maintenance speed or the normal speed, the landing is opened at the flat floor, and an alarm sound for reminding passengers to leave the car is sent.