CN108002165A - Elevator car position detection device - Google Patents

Abstract

The invention discloses an elevator car position detection device, which comprises a lifting driving mechanism, a car, a laser detection assembly, a signal receiver, a controller and an actuator, wherein the lifting driving mechanism, the car, the laser detection assembly, the signal receiver, the controller and the actuator are arranged in an elevator shaft; the laser detection assembly comprises a plurality of groups of laser generators arranged on the wall of the elevator shaft and a plurality of laser reflection plates arranged on the outer side wall of the elevator car, the laser generators further comprise supporting guide rods fixed on the wall, and a plurality of laser sources and laser receiving plates, the positions of which can be moved, are arranged on the upper portion of the supporting guide rods. The elevator car position detection device can be used for dealing with the special occasion that the hoisting rope is broken, can be used for continuously detecting the position of the elevator car with high precision, and can be used for verifying and evaluating the error of the detection result.

Description

An elevator car position detection device

Technical field:

The invention relates to the technical field of elevator detection, in particular to an elevator car position detection device.

Background technique:

At present, in the elevator speed control, there are mainly two methods for detecting the position of the elevator car: the rotary encoder method and the encoding method. The rotary encoder method has mature technology, simple structure, and convenient implementation, so it is widely used, but the relative slip between the traction wire rope and the traction sheave and the stretching of the traction rope will cause large detection errors. The encoding method is one of the important implementation methods of elevator car position detection in the elevator speed control at present. It can overcome the relative slippage between the traction wire rope and the traction sheave and the stretching of the traction rope caused by the rotary encoder detection method. Larger detection errors and other shortcomings have become an important development direction of elevator car position detection technology.

Chinese Invention Patent Authorization Notice CN100575230C (application number: CN03826457.9), CN1224569C (application number: CN01807856.7) discloses a kind of elevator car position detecting device respectively, but both are due to the elevator car owner with code The length of the moving link is much longer than the lifting height of the elevator, and the implementation cost is very high, or there is no way to continuously detect the position of the car, and because there is only one detector for each rope to cooperate with it, it takes a lot of follow-up to realize the detection results. Cons such as marked ropes.

Invention content:

The object of the present invention is to provide a kind of elevator car position detecting device aiming at the deficiencies of the prior art.

Technical solutions of the present invention are as follows:

An elevator car position detection device, which includes a lifting drive mechanism, a car, a laser detection component, a signal receiver, a controller, and an actuator arranged in an elevator shaft, wherein the lifting drive mechanism is fixedly connected to the car, and the laser detection The components are set on the wall of the elevator shaft, the signal receiver is electrically connected to the laser detection component and the controller, and the actuators are respectively electrically connected to the lifting drive mechanism and the controller; the laser detection component includes multiple sets of The laser generator and a plurality of laser reflection plates arranged on the outer side wall of the car, the laser generator further includes a support guide rod fixed on the wall, and a plurality of laser sources which can be moved in position and a laser receiver are arranged on the upper part of the support guide rod. Board; the laser receiving board senses the reflected laser signal and transmits the signal to the signal receiver. The signal receiver converts, expands, filters the laser signal, and transmits it to the controller. The controller comprehensively analyzes the laser signal and controls the The actuator makes corresponding execution actions, and the actuator issues action commands to the lifting drive mechanism according to the control signal of the controller.

The lifting drive mechanism includes a main drive device and a deflector wheel arranged in the elevator shaft. A main cable is wound around the main drive device and the deflector wheel. A car is suspended from one end of the main cable and a counterweight is suspended from the other end.

The main driving device is a winch, including driving parts and driving wheels.

The laser generators are vertically arranged along the walls of the elevator shaft, and the distances between adjacent laser generators are equal.

A car buffer mechanism is arranged directly below the car, and the car buffer mechanism is arranged at the pit bottom of the elevator shaft.

A counterweight buffer mechanism is arranged directly below the counterweight, and the counterweight buffer mechanism is arranged at the pit bottom of the elevator shaft.

The laser generators are numbered from top to bottom, and the numbers are 1, 2,...n. The laser generators numbered 1, 2,...n have different laser frequencies and vertical heights. The laser frequency of each laser generator is stored.

The beneficial effect of the present invention is that: the present invention provides a low-cost elevator car position detection device, which can deal with the special occasion of the breakage of the traction rope, can carry out continuous and high-precision detection of the position of the elevator car, and can analyze the detection results. Checksum error evaluation.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of laser generator;

Fig. 3 is a schematic diagram of the principle of the present invention.

Detailed ways:

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-3, an elevator car position detection device includes a lifting drive mechanism, a car 20, a laser detection component, a signal receiver, a controller and an actuator arranged in the elevator shaft 10, wherein, The lifting drive mechanism is fixedly connected to the car 20, the laser detection component is arranged on the wall of the elevator shaft 10, the signal receiver is electrically connected to the laser detection component and the controller, and the actuator is electrically connected to the lifting drive mechanism and the controller respectively; The detection assembly includes multiple groups of laser generators 11 arranged on the wall of the elevator shaft 10 and a plurality of laser reflectors 201 arranged on the outer side wall of the car 20, and the laser generator 11 further includes a support guide rod fixed on the wall 110, the upper part of the support guide rod 110 is provided with a plurality of laser sources 111 and a laser receiving board whose positions can be moved; the laser receiving board senses the reflected laser signal and transmits the signal to the signal receiver, and the signal receiver converts the laser signal, Amplify, filter, and pass it to the controller. The controller comprehensively analyzes the laser signal, and controls the actuator to make corresponding execution actions. The actuator gives action commands to the lifting drive mechanism according to the control signal of the controller.

The lifting drive mechanism includes a main driving device 22 and a deflecting wheel 23 arranged in the elevator shaft 10, the main driving device 22 and the deflecting wheel 23 are wound with a main cable 21, and one end of the main cable 21 is suspended with a car 20, A counterweight 24 is suspended from the other end.

The main driving device 22 is a winch, including driving components and driving wheels.

The laser generators 11 are vertically arranged along the walls of the elevator shaft 10, and the distances between adjacent laser generators 11 are equal.

Just below the car 20 is provided with a car buffer mechanism, and the car buffer mechanism is arranged at the pit bottom of the elevator shaft 10 .

A counterweight buffer mechanism is arranged directly below the counterweight 24 , and the counterweight buffer mechanism is arranged at the pit bottom of the elevator shaft 10 .

The laser generators 11 are numbered from top to bottom, and the numbers are respectively 1, 2, ... n, and the laser generators 11 numbered 1, 2, ... n have different laser frequencies and vertical heights, and the controller The laser frequency of each laser generator 11 is stored in advance.

Working principle: The laser generator 11 emits a laser signal, which is projected onto the laser reflector on the side wall of the car, and the laser reflector reflects the projected laser signal, and then reflects the laser signal back to the laser receiving plate; The laser receiving board senses the reflected laser signal and transmits the signal to the signal receiver. The signal receiver converts, expands, and filters the laser signal, and transmits it to the controller. The controller comprehensively analyzes the laser signal, and according to the laser signal The strength of the car is judged by the height of the car, and the actuator is controlled to make corresponding execution actions. The actuator gives action commands to the lifting drive mechanism according to the control signal of the controller.

The examples are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be listed in the claims of the present invention.

Claims (7)

1. A kind of 1. lift car position detecting device, it is characterised in that：It includes the lifting driving being arranged in elevator (10) Mechanism, carriage (20), laser detection component, signal receiver, controller and actuator, wherein, lift drive mechanism and sedan-chair Railway carriage or compartment (20) is fixedly connected, and laser detection component is arranged on the wall of elevator (10), signal receiver and laser detection component, Controller is electrically connected, and actuator is electrically connected respectively at lift drive mechanism and controller；Laser detection component includes setting Multigroup laser generator (11) on the wall of elevator (10) and be arranged in carriage (20) exterior side wall multiple swash Light reflecting board (201), laser generator (11) further comprise the support guide rod (110) being fixed on the wall, support guide rod (110) top is provided with the transportable multiple lasing light emitters (111) in position and laser receiver board；The sensing reflection of laser receiver sheet Signal is simultaneously passed to signal receiver by rear laser signal, and signal receiver is changed laser signal, expands, filtered, And pass it to controller, controller synthesis analysis laser signal, and control actuator make it is corresponding perform action, execution Device carries out action command according to the control signal of controller to lift drive mechanism.
2. A kind of 2. lift car position detecting device according to claim 1, it is characterised in that：Lift drive mechanism includes The main drive (22) and deflector sheave (23) being arranged in elevator (10), on main drive (22) and deflector sheave (23) Main push-towing rope rope (21) is arranged with, one end suspention of main push-towing rope rope (21) has carriage (20), and other end suspention has clump weight (24).
3. A kind of 3. lift car position detecting device according to claim 1, it is characterised in that：Laser generator (11) edge The wall of elevator (10), to be vertically arranged the distance between setting, adjacent laser generator (11) equal.
4. A kind of 4. lift car position detecting device according to claim 2, it is characterised in that：Main drive (22) is Hoist engine, including driving part and driving wheel.
5. A kind of 5. lift car position detecting device according to claim 1, it is characterised in that：The underface of carriage (20) Carriage buffer gear is provided with, carriage buffer gear is arranged on the hole bottom of elevator 10.
6. A kind of 6. lift car position detecting device according to claim 1, it is characterised in that：Clump weight (24) just under Side is provided with clump weight buffer gear, and clump weight buffer gear is arranged on the hole bottom of elevator (10).
7. A kind of 7. lift car position detecting device according to claim 1, it is characterised in that：Laser generator (11) quilt From top to bottom be numbered, numbering is respectively 1,2 ... n, numbering 1,2 ... the laser generator (11) of n have it is each not Identical laser frequency and vertical height, the laser frequency of each laser generator (11) is previously stored with controller.