CN212151233U

CN212151233U - Elevator limit distance measuring device

Info

Publication number: CN212151233U
Application number: CN202020761398.1U
Authority: CN
Inventors: 马同飞; 蒋守祥; 蒋莹莹; 赵迎龙; 魏斌; 王登营; 浦云杰
Original assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Current assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-15
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses an elevator limit distance measuring device, which relates to the technical field of elevators and comprises a mechanical measuring structure and an electrical measuring structure, wherein a pinch roller in the mechanical measuring structure rotates along with the traction of an elevator steel wire rope to drive a coaxial encoder to rotate, the electrical measuring structure comprises a main control circuit board, a current sensor connected with the main control circuit board and connected with an elevator safety loop, a first wireless transceiving module and a man-machine interaction module, and also comprises a signal circuit board connected with the encoder, a second wireless transceiving module connected with the signal circuit board, and the two wireless transceiving modules are in communication connection, the elevator limit distance measuring device can effectively avoid the braking distance error existing in the traditional manual measuring method, therefore, the more accurate elevator limit distance can be measured, the inspection quality is improved, and the elevator safety can be further ensured.

Description

Elevator limit distance measuring device

Technical Field

The utility model belongs to the technical field of the elevator technique and specifically relates to an elevator limit distance measuring device.

Background

The elevator manufacturing and installation safety code GB7588-2003 requires that "limit switches should be placed in positions as close as possible to the terminal to function without risk of false actions, which limit switches should function before the car or counterweight (if any) contacts the buffer and maintain its active state during the buffer is compressed".

The current method for measuring the limit distance of the elevator is generally as follows: and (4) moving the elevator to the top layer, turning to a maintenance state, moving upwards to an upper limit switch action, and measuring the vertical distance between the landing sill and the car door sill by using a tape measure, wherein the distance is the limit distance of the elevator. However, in practice, the elevator does not stop when the upper limit switch is operated, but continues to move upwards for a braking distance and then stops, so that the measurement mode is affected by the braking distance of the elevator, and the braking distance of each elevator is different, so that the errors of different elevators are different, when the delay time of the contracting brake operation is small, the error value is small, when the delay time of the contracting brake operation is large, the error value is large, and the measurement mode of manually measuring by using the measuring tape also has certain artificial errors, so that the limit distance measured by the measurement method is inaccurate and cannot be corrected.

SUMMERY OF THE UTILITY MODEL

The invention provides an elevator limit distance measuring device aiming at the problems and the technical requirements, the elevator limit distance measuring device is used for measuring the limit distance of an elevator, the elevator is positioned at a top floor leveling position, a lift car sill is flush with a landing door sill, the elevator is in a maintenance running state, and an upper limit switch of the elevator is in short circuit;

the elevator limit distance measuring device comprises a mechanical measuring structure and an electrical measuring structure, wherein the mechanical measuring structure comprises a magnetic base and a rack arranged on the magnetic base, an encoder, a pressing wheel and a coupler are arranged on the rack, two ends of the coupler are respectively connected with a rotating shaft of the encoder and a rotating shaft of the pressing wheel, and the encoder, the pressing wheel and the coupler are coaxial and are axially horizontal; the magnetic seat is installed in a machine room of the elevator close to the steel wire rope, the pressing wheel is perpendicular to and in contact with the steel wire rope, interactive pressure exists between the pressing wheel and the steel wire rope, and the pressing wheel is driven to rotate around the rotating shaft in the process that the steel wire rope pulls the elevator to move;

the electrical measurement structure comprises a main control circuit board, a current sensor, a first wireless transceiving module, a man-machine interaction module, a signal circuit board and a second wireless transceiving module, wherein the main control circuit board is connected with the current sensor, the first wireless transceiving module and the man-machine interaction module; the signal circuit board is connected with the second wireless transceiver module and the encoder in the mechanical measurement structure, and the first wireless transceiver module is in wireless communication connection with the second wireless transceiver module.

Its further technical scheme does, in mechanical measurement structure, the frame passes through connecting rod structure to be installed on the magnetism seat, and connecting rod structure's one end articulates on the magnetism seat, and the other end articulates in the frame, and connecting rod structure is inside to include the movable rod that a plurality of links to each other through the torsional spring, and the frame passes through connecting rod structure to adjust the distance for the magnetism seat in horizontal direction and/or vertical direction.

The further technical scheme is that in the electrical measurement structure, the man-machine interaction module comprises an input key, a display screen and an audible and visual alarm.

The technical scheme is that in the mechanical measuring structure, the coupler is arranged in the hollow part in the rack, the encoder is arranged on one side of the rack, the rotating shaft extends into the hollow part in the rack to be connected with the coupler, and the pressing wheel is arranged on the other side of the rack through a bearing, and the rotating shaft extends into the hollow part in the rack to be connected with the coupler.

The utility model has the beneficial technical effects that:

the application discloses elevator limit distance measuring device can realize automatic limit distance measurement through reasonable mechanical structure design and electrical structure design, not only can effectively avoid the artifical error that traditional manual measurement method brought, can also effectively avoid the braking distance error that exists among traditional manual measurement method to can measure and obtain more accurate elevator limit distance, improve proof mass, be favorable to further ensuring elevator safety.

Drawings

Fig. 1 is a schematic structural view of a mechanical measuring structure in an elevator limit distance measuring apparatus of the present application.

Fig. 2 is a schematic circuit diagram of an electrical measuring structure in the elevator limit distance measuring apparatus of the present application.

Fig. 3 is a schematic view of a usage flow of the elevator limit distance measuring apparatus of the present application.

Detailed Description

The following describes the embodiments of the present invention with reference to the accompanying drawings.

The application discloses elevator limit is apart from measuring device, this elevator limit is apart from measuring device is used for measuring the limit of elevator apart from, when using the device to measure the limit, and the elevator is located the top floor flat bed position and the car sill flushes with the sill of a landing door, and the elevator is in the last limit switch short circuit that overhauls running state and elevator.

This elevator limit distance measuring device includes mechanical measurement structure and electrical measurement structure, please refer to fig. 1, and mechanical measurement structure includes magnetism seat 1 and installs frame 2 on magnetism seat 1, and encoder 3, pinch roller 4 and shaft coupling 5 are installed on frame 2, and the pivot of encoder 3 and the pivot of pinch roller 4 are connected respectively to the both ends of shaft coupling 5, and encoder 3,

pinch roller

4 and 5 coaxial and axial levels of shaft coupling. Specifically, shaft coupling 5 is installed in the hollow department in frame 2, and encoder 3 is installed in the inside hollow coupling 5 that frame 2 was stretched into in one side of frame 2 and pivot, and pinch roller 4 passes through bearing 6 and installs the inside hollow coupling 5 that frame 2 was stretched into in the opposite side of frame 2 and pivot.

In addition in this application, frame 2 is not direct mount on magnetism seat 1, but installs on magnetism seat 1 through connecting rod structure, and connecting rod structure's one end articulates on magnetism seat 1, and the other end articulates on frame 2, and connecting rod structure is inside to include a plurality of movable rod 7, links to each other through torsional spring 8 between two adjacent movable rod 7, for example figure 1 is in order to include two movable rod 7. In the link structure, the opening angle between the connected movable rods 7 can be adjusted, and the link structure can rotate around the hinge of the magnetic base 1 and also can rotate around the hinge of the frame 2, so that the frame 2 can adjust the distance relative to the magnetic base 1 in the horizontal direction and/or the vertical direction through the link structure.

The magnetic base 1 of the mechanical measurement structure is installed in a machine room of an elevator and close to a steel wire rope, a pressing wheel 4 is perpendicular to and in contact with the steel wire rope, interaction pressure exists between the pressing wheel 4 and the steel wire rope, the pressing wheel 4 is driven to rotate around a rotating shaft in the process that the steel wire rope pulls the elevator to rotate through the shaft coupling 5 to drive the encoder 3. After the position of the magnetic base 1 is determined, the position of the pinch roller 4 can be adjusted through the connecting rod structure so as to achieve the relative state between the pinch roller and the steel wire rope.

Referring to fig. 2, the electrical measurement structure includes a main control circuit board, a current sensor, a first wireless transceiver module, a human-computer interaction module, a signal circuit board, and a second wireless transceiver module, which can be implemented by using commercially available components. The main control circuit board is connected with the current sensor, the first wireless transceiving module and the man-machine interaction module, the current sensor is connected into a safety loop of the elevator to detect the current of the safety loop, the safety loop of the elevator can be disconnected when an upper limit switch of the elevator acts, and the current sensor can detect that a current signal disappears. The signal circuit board is connected with the second wireless transceiver module and the encoder 3 in the mechanical measurement structure, and the first wireless transceiver module is in wireless communication connection with the second wireless transceiver module. In this application, the man-machine interaction module includes input button, display screen and audible-visual annunciator, and figure 2 is given an example including these three modules and is shown, and the input button makes the user can input actuating signal, and the limit distance that the display screen can survey in real time shows, and audible-visual annunciator can carry out audible-visual annunciator in order to play the warning effect in the testing process.

In order to make the elevator limit distance measuring device of the present application more clear to those skilled in the art, the present application describes the use of the device, please refer to the flow chart shown in fig. 3:

the elevator is converted into an extreme distance measuring state, namely: the elevator is operated to the top floor leveling position, the elevator car sill is enabled to be flush with the landing door sill, the elevator is converted into an overhaul operation state, and if the elevator is provided with an upper limit switch, the upper limit switch is in short circuit. The limit distance measuring device of the elevator of the application is installed according to the structure.

The input key in the electrical measurement structure is used for inputting a starting signal, the elevator limit distance measuring device is started to operate, the main control circuit board alarms by using the audible and visual alarm to indicate that the measurement is in progress, and the main control circuit board sends a signal to the second wireless transceiver module through the first wireless transceiver module to enable the signal circuit board to start to acquire the signal of the encoder 3. The elevator up-going maintenance button is pressed down in the machine room or the car roof to enable the elevator to move upwards at the maintenance speed to start the limit distance measurement, in the process, the main control circuit board continuously detects the current of the safety loop of the elevator through the current sensor, and the signal circuit board continuously collects signals of the encoder and sends the signals to the first wireless transceiving module through the second wireless transceiving module to send the signals to the main control circuit board. When the elevator moves upwards to the action of the upper limit switch, the main control circuit board detects the disconnection of the safety circuit and the disappearance of current through the current sensor, does not receive the signal of the encoder sent by the second wireless transceiver module any more, processes the encoder signal received before the disconnection of the safety circuit, can accurately calculate the limit distance, and can utilize the display to display the measurement result in real time. It should be noted that the above-mentioned measuring process does not depend on the improvement of the computer program, but is determined by the mechanical structure and the circuit structure of the elevator limit distance measuring device, and the specific control modes involved in the above-mentioned process are all conventional control modes of each component, and belong to the custom control configuration that can be realized by those skilled in the art according to conventional technical means.

What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.

Claims

1. The elevator limit distance measuring device is characterized in that the elevator limit distance measuring device is used for measuring the limit distance of an elevator, the elevator is located at a top floor leveling position, a car sill is flush with a landing sill, the elevator is in a maintenance running state, and an upper limit switch of the elevator is in short circuit;

the elevator limit distance measuring device comprises a mechanical measuring structure and an electrical measuring structure, wherein the mechanical measuring structure comprises a magnetic base and a rack arranged on the magnetic base, an encoder, a pressing wheel and a coupler are arranged on the rack, two ends of the coupler are respectively connected with a rotating shaft of the encoder and a rotating shaft of the pressing wheel, and the encoder, the pressing wheel and the coupler are coaxial and are axially horizontal; the magnetic seat is installed in a position, close to a steel wire rope, of a machine room of the elevator, the pressing wheel is perpendicular to and in contact with the steel wire rope, interactive pressure exists between the pressing wheel and the steel wire rope, and the pressing wheel is driven to rotate around a rotating shaft in the process that the steel wire rope pulls the elevator to move;

the electrical measurement structure comprises a main control circuit board, a current sensor, a first wireless transceiving module, a man-machine interaction module, a signal circuit board and a second wireless transceiving module, wherein the main control circuit board is connected with the current sensor, the first wireless transceiving module and the man-machine interaction module, the current sensor is connected into a safety loop of the elevator, and the safety loop of the elevator is disconnected when an upper limit switch of the elevator acts; the signal circuit board is connected with the second wireless transceiver module and the encoder in the mechanical measurement structure, and the first wireless transceiver module is in wireless communication connection with the second wireless transceiver module.

2. The elevator limit distance measuring device according to claim 1, wherein in the mechanical measuring structure, the frame is mounted on the magnetic base by a link structure, one end of the link structure is hinged on the magnetic base, the other end is hinged on the frame, the link structure internally includes a plurality of movable rods connected by torsion springs, and the frame adjusts a distance relative to the magnetic base in a horizontal direction and/or a vertical direction by the link structure.

3. The elevator limit distance measuring device of claim 1, wherein in the electrical measuring structure, the human-computer interaction module comprises an input key, a display screen and an audible and visual alarm.

4. The elevator limit distance measuring device according to claim 1, wherein in the mechanical measuring structure, the coupler is installed in the hollow portion of the frame, the encoder is installed on one side of the frame and the shaft extends into the hollow portion of the frame to connect with the coupler, the pressing wheel is installed on the other side of the frame through a bearing and the shaft extends into the hollow portion of the frame to connect with the coupler.