A size detection and calibration tool for stainless steel elevator door pocket production

By combining a roller conveyor and a laser measurement system with a PLC controller, the problem of low efficiency and low accuracy in traditional manual measurement of stainless steel elevator door frames has been solved, achieving efficient and accurate three-dimensional dimension detection and convenient limit roller maintenance.

CN224398600UActive Publication Date: 2026-06-23湖北鸿洋新型建材有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
湖北鸿洋新型建材有限公司
Filing Date
2025-09-10
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional stainless steel elevator door frame size inspection relies on manual measuring tools, which is inefficient and lacks accuracy.

Method used

By using a roller conveyor combined with laser measurement and a PLC controller, the length, width and thickness of the stainless steel elevator door frame can be detected simultaneously. The dimensions are calculated by a laser transmitter and receiver in conjunction with the PLC controller, reducing errors caused by human intervention.

Benefits of technology

This technology enables simultaneous three-dimensional detection of stainless steel elevator door frames, improving detection efficiency and accuracy, and facilitating the disassembly and maintenance of the limit rollers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to rustproof steel elevator door pocket detection technical field, and disclose a kind of size detection calibration tool for stainless steel elevator door pocket production, including drum conveyor, the top of drum conveyor is provided with measuring mechanism, one end of measuring mechanism is provided with dismounting mechanism, measuring mechanism includes measuring frame, the inside slide of measuring frame is connected with sliding block, one end of sliding block is fixedly connected with first air cylinder, the other end is fixedly connected with first measuring plate, the inside fixed connection of measuring frame has return spring, one end of return spring is fixedly connected with second measuring plate, the bottom fixed connection of second measuring plate has mounting seat, this size detection calibration tool for stainless steel elevator door pocket production, three size synchronous detection are realized by measuring mechanism, effectively reduce the tedious operation of multiple adjustment measurement position, reduce the measurement error caused by artificial intervention, reach the effect of improving detection efficiency and detection accuracy.
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Description

Technical Field

[0001] This utility model relates to the field of stainless steel elevator door frame testing technology, specifically a dimensional testing and calibration tool for stainless steel elevator door frame production. Background Technology

[0002] Elevators, as an indispensable necessity in modern society, are increasingly appearing in every corner of our lives. Elevator door frames are divided into small door frames and large outer door frames. Small door frames, typically made of brushed stainless steel, are usually included as standard equipment. The large door frame covers the wall section between the small door frame and the elevator call buttons. As the most important component of the elevator lobby, it must have both directional and decorative functions, allowing people to more intuitively locate the elevator entrance and exit.

[0003] Traditional stainless steel elevator door frame size inspection mainly relies on manual measuring tools such as steel tape measures and calipers. Manual measurement requires point-by-point and item-by-item measurement, which is inefficient.

[0004] Therefore, we urgently need a dimensional inspection and calibration tool for the production of stainless steel elevator door frames. Utility Model Content

[0005] The purpose of this utility model is to provide a dimensional inspection and calibration tool for the production of stainless steel elevator door frames, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a size detection and calibration tool for the production of stainless steel elevator door frames, including a roller conveyor, a measuring mechanism is provided on the top of the roller conveyor, and a disassembly mechanism is provided at one end of the measuring mechanism;

[0007] The measuring mechanism includes a measuring frame, a sliding block slidably connected to the inner side of the measuring frame, a first cylinder fixedly connected to one end of the sliding block, a first measuring plate fixedly connected to the other end of the sliding block, a return spring fixedly connected to the inner side of the measuring frame, a second measuring plate fixedly connected to one end of the return spring, a mounting base fixedly connected to the bottom of the second measuring plate, a limit roller provided at one end of the mounting base, the sliding block, and the measuring frame, and a second cylinder fixedly connected to the top of the measuring frame.

[0008] Preferably, one end of the first measuring plate passes through the measuring frame and extends to the outside of the measuring frame, and one end of the second measuring plate passes through the measuring frame and extends to the top of the measuring frame.

[0009] Preferably, a laser emitter is provided at one end of the roller conveyor, the first measuring plate, and the second measuring plate, and a laser receiver is installed at the other end of the roller conveyor and on the side and top of the measuring frame.

[0010] Preferably, one end of the laser emitter and laser receiver is electrically connected to a PLC controller, and the PLC controller is installed at one end of the roller conveyor.

[0011] Preferably, a support frame is fixedly connected to the top of the roller conveyor, and one end of the support frame is fixedly connected to one end of the second cylinder.

[0012] Preferably, the disassembly mechanism includes a rotating base, one end of which is fixedly connected to a locking block.

[0013] Preferably, the inner side of the rotating seat is rotatably connected to one end of the limiting roller, and multiple locking blocks are provided.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0015] First, this utility model uses a second cylinder to lower the measuring frame, causing its bottom to fit against the upper surface of the door frame. The limiting roller at the bottom of the mounting base contacts the door frame, pushing the second measuring plate upward against the return spring. Its laser emitter moves upward accordingly, and the laser receiver at the top of the measuring frame transmits the signal to the PLC to calculate the thickness. At the same time, the first cylinder is activated to push the sliding block, causing the limiting roller to push the door frame until it fits against the limiting rollers on both sides. The first measuring plate moves synchronously, and its laser emitter cooperates with the laser receiver on the side of the measuring frame. The PLC calculates the width accordingly. The door frame continues to be conveyed. When it blocks the laser emitter of the roller conveyor, the PLC starts timing. The timing stops when the rear end leaves, and the length is calculated. Finally, three dimensions are detected simultaneously, effectively reducing the tedious operation of adjusting the measurement position multiple times, reducing measurement errors caused by manual intervention, and achieving the effect of improving detection efficiency and accuracy.

[0016] Secondly, when the limiting roller needs to be cleaned, maintained, or replaced, the locking block at one end of the rotating seat can be directly removed from the equipment along with the limiting roller by releasing the locking block from the corresponding slot of the measuring frame, sliding block, or mounting seat, without the need for complicated tools, thus achieving the effect of convenient disassembly. Attached Figure Description

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a perspective view of the measuring frame of this utility model;

[0019] Figure 3 This is a cross-sectional view of the first measuring plate of this utility model;

[0020] Figure 4 This is a cross-sectional view of the second measuring plate of this utility model.

[0021] The components are: 1. Roller conveyor; 2. Measuring mechanism; 3. Disassembly mechanism; 21. Measuring frame; 22. Sliding block; 23. First cylinder; 24. First measuring plate; 25. Return spring; 26. Second measuring plate; 27. Mounting base; 28. Limiting roller; 29. ​​Second cylinder; 201. Laser emitter; 202. Laser receiver; 31. Rotating seat; 32. Locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides the following technical solution:

[0024] Example 1

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A dimensional inspection and calibration tool for the production of stainless steel elevator door frames includes a roller conveyor 1, a measuring mechanism 2 is provided on the top of the roller conveyor 1, and a disassembly mechanism 3 is provided at one end of the measuring mechanism 2;

[0026] The measuring mechanism 2 includes a measuring frame 21. A sliding block 22 is slidably connected to the inner side of the measuring frame 21. A first cylinder 23 is fixedly connected to one end of the sliding block 22, and a first measuring plate 24 is fixedly connected to the other end. A return spring 25 is fixedly connected to the inner side of the measuring frame 21. A second measuring plate 26 is fixedly connected to one end of the return spring 25. A mounting base 27 is fixedly connected to the bottom of the second measuring plate 26. A limit roller 28 is provided at one end of the mounting base 27, the sliding block 22, and the measuring frame 21. A second cylinder 29 is fixedly connected to the top of the measuring frame 21.

[0027] One end of the first measuring plate 24 passes through the measuring frame 21 and extends to the outside of the measuring frame 21, and one end of the second measuring plate 26 passes through the measuring frame 21 and extends to the top of the measuring frame 21.

[0028] Laser emitters 201 are provided at one end of the roller conveyor 1, the first measuring plate 24, and the second measuring plate 26, and laser receivers 202 are installed at the other end of the roller conveyor 1 and on the side and top of the measuring frame 21.

[0029] One end of the laser emitter 201 and the laser receiver 202 is electrically connected to a PLC controller, which is installed at one end of the roller conveyor 1.

[0030] A support frame is fixedly connected to the top of the roller conveyor 1, and one end of the support frame is fixedly connected to one end of the second cylinder 29.

[0031] Through the above technical solution, when the stainless steel elevator door frame is conveyed to the measuring mechanism 2 by the roller conveyor 1, the PLC controller first triggers the second cylinder 29 to start, driving the measuring frame 21 to descend along the support frame until the bottom of the measuring frame 21 is in contact with the upper surface of the door frame. At this time, the limiting roller 28 at the bottom of the mounting base 27 simultaneously contacts the upper surface of the door frame. As the measuring frame 21 continues to descend, the supporting force of the door frame on the limiting roller 28 causes the second measuring plate 26 to slide upward against the elastic force of the return spring 25. The laser emitter 201 at one end of the second measuring plate 26 rises accordingly, and the measuring frame 21... The laser receiver 202 at the top transmits the captured laser signal changes to the PLC controller. The controller analyzes the signal to calculate the upward displacement of the second measuring plate 26, thereby accurately determining the thickness of the door frame. Simultaneously, the PLC controller activates the first cylinder 23, pushing the sliding block 22 along the inner side of the measuring frame 21. The limiting roller 28 at one end of the sliding block 22 moves with it and contacts one side of the door frame, pushing the door frame towards the limiting roller 28 on the other side of the measuring frame 21 until both sides of the door frame are in contact with both sets of limiting rollers 28. At this point, the first measuring plate 24 moves with the sliding block 26. 2. Synchronous movement: The signal changes generated by the laser emitter 201 at one end of the measuring frame 21 in conjunction with the laser receiver 202 on the side of the measuring frame 21 are transmitted to the PLC controller in real time. The controller calculates the moving distance of the first measuring plate 24 based on the signal changes, thereby determining the width of the door frame. Subsequently, the door frame continues to be conveyed by the roller conveyor 1. When the front end of the door frame blocks the laser emitter 201 at one end of the roller conveyor 1, the laser receiver 202 at the other end of the roller conveyor 1 immediately transmits the blocking signal to the PLC controller, and the controller starts timing synchronously. After the rear end of the door frame completely leaves the laser emitter 201 and the laser receiver 202 resumes signal reception, the controller stops timing and calculates the length of the door frame. Finally, the length, thickness and width of the stainless steel elevator door frame are simultaneously detected, which effectively reduces the tedious operation of adjusting the measurement position multiple times, reduces the measurement error caused by manual intervention, and achieves the effect of improving detection efficiency and detection accuracy. The working principle and internal circuit of the PLC controller, laser receiver 202 and laser emitter 201 are existing technologies and are well known to those skilled in the art, so they will not be described in detail.

[0032] Example 2

[0033] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Furthermore, based on Embodiment 1, the disassembly mechanism 3 includes a rotating seat 31, and a locking block 32 is fixedly connected to one end of the rotating seat 31.

[0034] The inner side of the rotating seat 31 is rotatably connected to one end of the limiting roller 28, and multiple locking blocks 32 are provided.

[0035] With the above technical solution, when it is necessary to clean, maintain or replace the limiting roller 28, since the locking block 32 at one end of the rotating seat 31 is connected to the mounting seat 27, the sliding block 22 and the measuring frame 21 at one end, the rotating seat 31 together with the limiting roller 28 can be directly removed from the equipment by releasing the locking block 32 from the corresponding slot of the measuring frame 21, the sliding block 22 or the mounting seat 27, without the need for complicated tools, thus achieving the effect of convenient disassembly.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dimensional inspection and calibration tool for the production of stainless steel elevator door frames, comprising a roller conveyor (1), characterized in that: The top of the roller conveyor (1) is provided with a measuring mechanism (2), and one end of the measuring mechanism (2) is provided with a disassembly mechanism (3); The measuring mechanism (2) includes a measuring frame (21), a sliding block (22) is slidably connected to the inner side of the measuring frame (21), a first cylinder (23) is fixedly connected to one end of the sliding block (22), a first measuring plate (24) is fixedly connected to the other end, a return spring (25) is fixedly connected to the inner side of the measuring frame (21), a second measuring plate (26) is fixedly connected to one end of the return spring (25), a mounting base (27) is fixedly connected to the bottom of the second measuring plate (26), a limit roller (28) is provided at one end of the mounting base (27), the sliding block (22) and the measuring frame (21), and a second cylinder (29) is fixedly connected to the top of the measuring frame (21).

2. The dimensional inspection and calibration tool for stainless steel elevator door frame production according to claim 1, characterized in that: One end of the first measuring plate (24) passes through the measuring frame (21) and extends to the outside of the measuring frame (21), and one end of the second measuring plate (26) passes through the measuring frame (21) and extends to the top of the measuring frame (21).

3. The dimensional inspection and calibration tool for stainless steel elevator door frame production according to claim 1, characterized in that: Laser emitters (201) are provided at one end of the roller conveyor (1), the first measuring plate (24), and the second measuring plate (26), and laser receivers (202) are installed at the other end of the roller conveyor (1) and on the side and top of the measuring frame (21).

4. The dimensional inspection and calibration tool for stainless steel elevator door frame production according to claim 3, characterized in that: One end of the laser transmitter (201) and the laser receiver (202) is electrically connected to a PLC controller, which is installed at one end of the roller conveyor (1).

5. The dimensional inspection and calibration tool for stainless steel elevator door frame production according to claim 1, characterized in that: The top of the roller conveyor (1) is fixedly connected to a support frame, one end of which is fixedly connected to one end of the second cylinder (29).

6. The dimensional inspection and calibration tool for stainless steel elevator door frame production according to claim 1, characterized in that: The disassembly mechanism (3) includes a rotating seat (31), and a locking block (32) is fixedly connected to one end of the rotating seat (31).

7. The dimensional inspection and calibration tool for stainless steel elevator door frame production according to claim 6, characterized in that: The inner side of the rotating seat (31) is rotatably connected to one end of the limiting roller (28), and multiple locking blocks (32) are provided.