Device for testing absolute value encoder of elevator shaft

Abstract

The utility model discloses a device for testing an absolute value encoder of an elevator shaft. The device comprises a tool frame, a sliding platform arranged below the tool frame, and a plurality of shaft leveling insertion plates arranged on the sliding platform at intervals. A plurality of absolute value encoders are arranged on the lower end face of the tool frame at intervals, and the absolute value encoders are electrically connected with the communication test assembly; the horizontal linear movement of the sliding platform drives the hoistway leveling inserting plate to pass through a U-shaped sensing area of the absolute value encoder back and forth, and then data collected by the absolute value encoder are monitored through the communication testing assembly. The device is simple in structure, the absolute value encoder of the shaft can be tested in a conventional room, and a plurality of absolute value encoders can be tested at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator position detection, and particularly relates to a device for testing an absolute encoder in an elevator hoistway. Background Art

[0002] When the absolute encoder in the elevator hoistway leaves the factory, it needs to be tested by a life test device and a conventional test device. Traditionally, the test usually relies on manual operation using general instruments such as multimeters and oscilloscopes to confirm whether the signal is normal. This test method has problems such as low detection efficiency and easy omission of detection content. If product life and reliability tests are to be carried out, it needs to be installed on an actual elevator for operation, and only one product can be tested on each elevator at a time. Content of the Utility Model

[0003] In order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide a device for testing an absolute encoder in an elevator hoistway to improve the test efficiency of the absolute encoder.

[0004] The device for testing an absolute encoder in an elevator hoistway includes a tooling rack, a sliding platform arranged below the tooling rack, and a plurality of hoistway flat layer inserting plates arranged at intervals on the sliding platform; a plurality of absolute encoders are arranged at intervals on the lower end surface of the tooling rack, and the absolute encoders are electrically connected to a communication test component; the horizontal linear movement of the sliding platform drives the hoistway flat layer inserting plates to pass back and forth through the U-shaped induction area of the absolute encoder, and then the communication test component monitors the data collected by the absolute encoder.

[0005] Further, the communication test component is used to supply power and communicate with the absolute encoder and monitor in real time whether the output signal of the device is normal, including power supply and RS serial port communication, and communicates with the absolute encoder through the RS serial port communication.

[0006] Further, the sliding platform includes a horizontal platform, a guide rail and a servo motor. A slider is rotatably arranged on the lead screw of the servo motor. The slider cooperates with the guide rail and linearly moves along the guide rail, and the slider is fixedly connected to the horizontal platform. The hoistway flat layer inserting plates are fixedly arranged on the horizontal platform.

[0007] Further, limit switches are arranged at both ends of the guide rail.

[0008] Further, the absolute encoder is of a U-shaped structure, its bottom wall is fixed to the tooling rack, and the U-shaped groove is the U-shaped induction area. The hoistway flat layer inserting plates can pass through the U-shaped induction area back and forth.

[0009] Further, three absolute encoders are arranged on the tooling rack.

[0010] Further, the device further includes an electric control box, which includes a control start button, a control board, a driver for a servo motor, and a power switch.

[0011] Further, the acquisition signals of the absolute encoder include upper and lower door area signals, upper and lower forced signals in the hoistway, and re-leveling signals.

[0012] Compared with the prior art, the present utility model has the following advantages: The device of the present application has a simple structure, and the absolute encoder in the hoistway can be tested in a conventional indoor environment, and multiple absolute encoders can be tested simultaneously. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a mating diagram of the absolute encoder and the hoistway leveling plug plate of the present utility model.

[0015] In the figure: 1 - tooling rack, 2 - sliding platform, 21 - horizontal platform, 22 - guide rail, 23 - servo motor, 24 - lead screw, 25 - slider, 3 - hoistway leveling plug plate, 4 - absolute encoder, 5 - communication test component, 6 - electric control box, 7 - limit switch. Detailed Embodiment

[0016] To enable those skilled in the art to more clearly understand the technical solution of the present application, the present utility model will be further described below with reference to the accompanying drawings.

[0017] As Figure 1 shown, a device for testing the absolute encoder of an elevator hoistway includes a tooling rack 1, a sliding platform 2 disposed below the tooling rack 1, and a plurality of hoistway leveling plug plates 3 are spaced on the sliding platform 2; a plurality of absolute encoders 4 are spaced on the lower end surface of the tooling rack 1, and the absolute encoder 4 is electrically connected to the communication test component 5; the horizontal linear movement of the sliding platform 2 drives the hoistway leveling plug plate 3 to pass back and forth through the U-shaped induction area of the absolute encoder 4, and then monitors the data collected by the absolute encoder 4 through the communication test component 5. The communication test component 5 is used to provide power and communication to the absolute encoder 4 and monitor in real time whether the output signal of the device is normal, including power supply and RS485 serial communication. It communicates with the absolute encoder 4 through the RS485 serial communication using a proprietary protocol with the device under test. The DC24V and 0V ports of the test device provide power to the absolute encoder 4. The absolute encoder 4 and the communication test component 5 use four pairs of twisted pairs, DC24V, 0V, A, B.

[0018] Specifically, the sliding platform 2 includes a horizontal platform 21, a guide rail 22, and a servo motor 23. A slider 25 is rotatably arranged on the lead screw 24 of the servo motor 23. The slider 25 cooperates with the guide rail 22 and linearly moves along the guide rail 22. The slider 25 is fixedly connected to the horizontal platform 21, and the hoistway leveling insert plate 3 is fixedly arranged on the horizontal platform 21. As Figure 2 shown, the absolute encoder 4 is of a U-shaped structure. Its bottom wall is fixed to the tooling rack 1, and the U-shaped groove is a U-shaped induction area. The hoistway leveling insert plate 3 can pass through the U-shaped induction area and move back and forth. In a specific embodiment, the absolute encoder 4 and the tooling rack 1 are fastened by bolt parts; three absolute encoders 4 are arranged on the tooling rack 1.

[0019] Furthermore, the device further includes an electric control box 6. The electric control box 6 includes a control start button, a control board, a driver for the servo motor 23, and a power switch. The acquisition signals of the absolute encoder 4 include upper and lower door area signals, upper and lower hoistway forced signals, and re-leveling signals. Limit switches 7 are arranged at both ends of the guide rail 22 to provide limit signals to the servo motor 23 to prevent abnormal jamming. The cooperation between the limit switch 7 and the servo motor 23 is a prior art.

[0020] The specific test process is as follows: The servo motor 23 drives the lead screw 24 to move, driving the slider 25 and the horizontal platform 21 to reciprocate horizontally, driving the hoistway leveling insert plate 3 to slide back and forth across the U-shaped induction area of the absolute encoder 4. At the same time, the communication test component 5 is used to detect whether the data collected by the absolute encoder 4 is correct. The number of reciprocations and the speed of the horizontal platform 21 can be adjusted by adjusting the servo motor 23. One hoistway leveling insert plate 3 represents the door area of one floor.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for testing an absolute encoder of an elevator shaft, comprising a fixture frame (1), characterized in that: It also includes a sliding platform (2) arranged below the tooling frame (1), and a plurality of shaft leveling plug plates (3) are arranged at intervals on the sliding platform (2); a plurality of absolute value encoders (4) are arranged at intervals on the lower end surface of the tooling frame (1), and the absolute value encoders (4) are electrically connected to a communication test component (5); the horizontal linear movement of the sliding platform (2) drives the shaft leveling plug plates (3) to pass back and forth through the U-shaped sensing area of ​​the absolute value encoder (4), and then the data collected by the absolute value encoder (4) is monitored through the communication test component (5).

2. A device for testing an absolute encoder of an elevator shaft according to claim 1, characterized in that: The communication test component (5) is used to provide power and communication to the absolute value encoder (4) and monitor in real time whether the output signal of the device is normal, including power supply and RS485 serial port communication, and communicates with the absolute value encoder (4) via RS485 serial port communication.

3. A device for testing an absolute encoder of an elevator shaft according to claim 1, characterized in that: The sliding platform (2) comprises a horizontal platform (21), a guide rail (22) and a servo motor (23); a slider (25) is rotatably arranged on a screw rod (24) of the servo motor (23); the slider (25) cooperates with the guide rail (22) and moves linearly along the guide rail (22); the slider (25) is fixedly connected to the horizontal platform (21); and the shaft leveling plug plate (3) is fixedly arranged on the horizontal platform (21).

4. A device for testing an absolute encoder of an elevator shaft according to claim 3, characterized in that: Limit switches (7) are provided at both ends of the guide rail (22).

5. The device for testing an absolute encoder of an elevator shaft according to claim 3, characterized in that: The absolute value encoder (4) is of a U-shaped structure, the bottom wall of which is fixed to the tooling frame (1), the interior of the U-shaped groove is a U-shaped sensing area, and the shaft leveling plug plate (3) can penetrate the U-shaped sensing area and move back and forth.

6. A device for testing an absolute encoder of an elevator shaft according to claim 5, characterized in that: Three absolute value encoders (4) are arranged on the tooling frame (1).

7. A device for testing an absolute encoder of an elevator shaft according to any one of claims 1 to 6, characterized in that: The device further comprises an electric control box (6), wherein the electric control box (6) comprises a control start button, a control panel, a driver of a servo motor (23), and a power switch.

8. A device for testing an absolute encoder of an elevator shaft according to any one of claims 1 to 6, characterized in that: The collected signals of the absolute value encoder (4) include upper and lower door zone signals, upper and lower shaft forced signals, and re-leveling signals.

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