Elevator installation gap measuring device

Abstract

This invention relates to the field of laser-based distance measurement technology and discloses an elevator installation gap measuring device, including a fixed plate and an elevator car. Handles are provided at the top and bottom of the back of the fixed plate, and a measuring structure is provided on the front of the fixed plate. The measuring structure includes a reference plate, the top of which is divided into two areas: a reference area and a refraction area. Through holes are provided on the top and one side of the front of the reference plate, and a refraction mirror is installed inside each through hole. The elevator installation gap measuring device provided by this invention has a measuring structure that performs two different functions through the reference plate. The reference plate is divided into two areas: a reference area and a refraction area. The reference area is used for fixed-point measurement by the user to ensure consistent measurement data and avoid errors caused by different laser planes and measurement heights during secondary measurements using a handheld laser rangefinder.

Description

Technical Field

[0001] This invention relates to the field of laser-based gap measurement technology, specifically to an elevator installation gap measuring device. Background Technology

[0002] In patent application CN119958439B, there are three components: an installation unit, a measuring unit, and a displacement unit, all mounted on the top of an elevator car. The installation unit includes a cover, which is installed at the center of the top of the elevator car and has an installation cavity inside. The measuring unit includes a turntable, which is rotatably mounted at the center of the installation cavity. A drive motor is mounted at the center of the turntable's rotation. A pair of connecting plates are mounted on the sidewalls of the turntable, and a positioning slider is slidably mounted on the connecting plates. A positioning plate is installed inside the installation cavity, and the positioning plate has four protrusions that correspond to the four sidewalls of the elevator car. Each of the four protrusions has an external groove, and a reversing groove connects adjacent external grooves. The advantages are as follows: The drive motor in the measurement unit can rotate the arched bracket and connecting plate connected to the laser rangefinder, which can then move the laser rangefinder to the four sides of the elevator car to complete the measurement operation. This method allows the laser rangefinder to be installed on only one side of the elevator car, making operation more convenient and improving installation efficiency. When the connecting plate rotates on the adjacent sides of the elevator car, the positioning slider slides outward through the guide of the outward protrusion and reversing groove, pushing the push rod to move. The push rod causes the arched bracket to flip, at which point the laser rangefinder on the arched bracket becomes vertical, thus measuring the distance from the top of the car to the top of the hoistway. This method can reduce the number of laser rangefinders used, saving measurement costs.

[0003] In the aforementioned patents and existing technologies, after the elevator car is built, in addition to checking whether the elevator car is located in the middle of the elevator shaft, it is also necessary to check whether the bottom sill of the elevator car is level with the floor sill. If there is an error, it needs to be measured manually and then adjusted. Manual measurement usually uses a depth gauge or, for higher precision, a laser rangefinder. Both rely on manual measurement, making it impossible to maintain the same detection point and detection height, resulting in certain errors. This leads to repeated adjustments later and inconsistent levelness, affecting the use of the elevator. Summary of the Invention

[0004] The problem this invention aims to solve is that inconsistencies in the manual measurement of detection points and detection heights lead to errors in the detection data.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an elevator installation gap measuring device, including a fixed plate and an elevator car, wherein handles are provided at the top and bottom of the back of the fixed plate, and a measuring structure is provided on the front of the fixed plate; The measuring structure includes a reference plate, the top of which is divided into two areas: a reference area and a refraction area. A through hole is provided on the top and one side of the front of the reference plate, and a refraction mirror is installed inside the through hole. A movable rod is fixedly installed on the rear side of the top of the reference plate, and a handle is provided on one side of the reference plate. The elevator car is equipped with elevator equipment on its exterior, and the fixing plate is temporarily installed inside the elevator car for operation during use.

[0006] Preferably, the movable rod is slidably provided with a housing, and the front of the housing has a movable groove.

[0007] Preferably, a fixing screw is provided on the front side of the movable rod, which is used to control the movable rod to be fixed when the housing slides.

[0008] Preferably, a connecting frame is provided on the back of the housing, and the back of the connecting frame is fixedly connected to the front of the fixing plate.

[0009] Preferably, a connector is provided at the top of the front side of the fixing plate, the main body of the connector is a rectangular block, and a slide rail is slidably provided on the front side of the connector.

[0010] Preferably, a slide plate is slidably mounted on the slide rail, and a laser rangefinder is positioned between the two slide plates on opposite sides.

[0011] Preferably, the bottom of the fixing plate is provided with a base, and both sides of the bottom of the base are rotatably provided with a housing, and the front of the housing is provided with a through groove.

[0012] Preferably, the outer shell has an internal cavity, a spring is fixedly installed on the top of the inner wall of the cavity, and a bracket is installed at the bottom of the spring.

[0013] Preferably, a knob is provided at the top of the front of the bracket, the knob is adapted to the through groove, and the bottom of the bracket penetrates the outer shell and extends to the outside of the outer shell.

[0014] Preferably, a base plate is fixedly provided at the bottom of the bracket, and rollers are rotatably provided on both sides of the base plate.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The present invention is provided with a fixed plate, and a measuring structure is provided on the fixed plate. The measuring structure performs two different functions through the reference plate. The reference plate is divided into two areas, one is the reference area and the other is the refraction area. The reference area is used for users to measure at fixed points, so that the measurement data is kept consistent. This avoids the error caused by the laser plane being different and the measurement height being different when the laser is used for secondary measurement. This will affect the subsequent adjustment of the elevator car height. The same reference plane provides a unified and unchanging reference point for all measurements. Whether measuring different positions of the bottom of the elevator car or comparing data of different floors, it is based on the same "zero position" to ensure that the data is logically consistent. The refraction area allows users to change the vertically downward laser light into a horizontal laser light when determining the error height. This makes it easier for users to see whether the reference plane is parallel to the floor. They do not need to align it with their naked eyes. They can quickly judge whether the position of the reference plane is parallel to the ground by the laser light. Then, they can quickly read the difference between the original height of the reference plane and the changed height to quickly obtain the height difference between the elevator car sill and the floor sill, which is convenient for subsequent adjustment. (2) The bottom of the fixed plate is also equipped with a retractable outer shell and bracket. The bracket can move inside the outer shell. When the user needs to use it in the elevator, the internal space varies in size due to different elevator specifications. When not in use, the bracket is in a closed state. When in use, the brackets on both sides are pried open and pressed down. The brackets will open through the rollers on both sides. When opened to the same length as the two sides inside the elevator car, a straight line will be formed and the position will be fixed. This can prevent the reference plate from moving during measurement, making the measurement data more accurate. Secondly, it can adapt to the internal space of elevator cars of different sizes. It can be fixed by simply pressing down, reducing the tedious fixing for the user during use, making it simpler and more efficient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the overall structure of the present invention; Figure 3 This is a bottom view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the measurement structure of the present invention; Figure 5 This is a schematic diagram of the laser rangefinder structure of the present invention; Figure 6 This is a front view schematic diagram of the fixing plate structure of the present invention; Figure 7 This is a schematic diagram of the rotating outer shell structure of the present invention; Figure 8 This is a schematic diagram of the refractive mirror structure of the present invention; Figure 9 This is a schematic diagram of the movable rod structure of the present invention; Figure 10 This is a schematic diagram of the reference plate structure of the present invention; Figure 11 This is a bottom view of the reference plate structure of the present invention; Figure 12 This is a schematic diagram illustrating the use of laser measurement in this invention.

[0017] In the diagram: 1. Elevator car; 2. Laser rangefinder; 3. Fixing plate; 4. Measuring structure; 401. Housing; 402. Connecting frame; 403. Movable rod; 404. Base plate; 405. Through hole; 406. Handle; 407. Fixing screw; 408. Refracting mirror; 5. Elevator equipment; 6. Base; 7. Outer shell; 8. Bracket; 9. Base plate; 10. Knob; 11. Roller; 12. Slide rail; 13. Slide plate; 14. Handle; 15. Spring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0019] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0020] like Figures 1 to 12As shown, the present invention provides an elevator installation gap measuring device, including a fixed plate 3 and an elevator car 1. Handles 14 are provided on the top and bottom of the back of the fixed plate 3, and a measuring structure 4 is provided on the front of the fixed plate 3. The measuring structure 4 performs two different functions through a reference plate 404. The reference plate is divided into two areas, a reference area and a refraction area. The reference area is used to provide a uniform and unchanging reference plane for laser ranging, thereby eliminating the error caused by the inconsistency of measurement point position and height due to handheld devices. The refraction area converts the vertically downward laser beam into a horizontal direction through optical path conversion, making it convenient for users to intuitively judge whether the reference surface is flush with the floor. The measuring structure 4 includes a reference plate 404. The top of the reference plate 404 is divided into two areas: a reference area and a refraction area. A through-hole 405 is provided on the top and one side of the front of the reference plate 404. A refraction mirror 408 is installed inside the through-hole 405. A movable rod 403 is fixedly installed on the rear side of the top of the reference plate 404, and a handle 406 is provided on one side of the reference plate 404. The refraction area allows the user to convert the vertically downward laser beam into a horizontal laser beam when determining the error height. This makes it easier for the user to check whether the reference surface is parallel to the floor, eliminating the need for manual alignment. The user can quickly determine whether the position of the reference surface has shifted upwards and is parallel to the ground simply by observing the laser beam. An elevator device 5 is installed on the outside of the elevator car 1, and a fixing plate 3 is temporarily installed inside the elevator car 1 for operation during use.

[0021] The movable rod 403 is slidably provided with a housing 401 on its outside. The front of the housing 401 has a movable groove, and the movable rod 403 can slide up and down inside the housing 401.

[0022] The movable rod 403 has a fixing screw 407 on its front side. The fixing screw 407 is used to control the movable rod 403 to be fixed when the housing 401 slides. When the reference plate 404 is adjusted to the required height, the fixing screw 407 can be tightened to lock the relative position of the movable rod 403 and the housing 401, thereby fixing the reference plate 404, freeing the operator's hands and facilitating subsequent measurement operations.

[0023] A connecting bracket 402 is provided on the back of the housing 401, and the back of the connecting bracket 402 is fixedly connected to the front of the fixing plate 3.

[0024] A connector is provided on the top of the front side of the fixed plate 3. The main body of the connector is a rectangular block with a stable structure, providing reliable support for the slide rail 12. The slide rail 12 is slidably mounted on the front side of the connector, and a sliding plate 13 is slidably mounted on the slide rail 12. A laser rangefinder 2 is fixedly installed between the two sliding plates 13 on opposite sides. Through the cooperation of the sliding plates 13 and the slide rail 12, the laser rangefinder 2 can be flexibly adjusted in the horizontal and forward / backward directions to adapt to different measurement points and measurement needs.

[0025] A slide plate 13 is slidably mounted on the slide rail 12. A laser rangefinder 2 is positioned between two opposite sides of the two slide plates 13. The slide plates 13, in conjunction with the slide rail 12, can control the longitudinal and lateral horizontal movement of the laser rangefinder 2.

[0026] The bottom of the fixing plate 3 is provided with a base 6, and the bottom of the base 6 is rotatably provided with a housing 7 on both sides. The front of the housing 7 is provided with a through groove.

[0027] The outer shell 7 has an internal cavity. A spring 15 is fixedly installed on the top of the inner wall of the cavity, and a bracket 8 is installed at the bottom of the spring 15. The bracket 8 can move inside the outer shell 7. When the user needs to use it in the elevator, the internal space varies in different elevator sizes. When not in use, the bracket 8 is closed for easy carrying. When in use, the two brackets 8 are pried open and pressed down. The bracket 8 will open through the rollers 11 on both sides. When it is opened to the same length as the two sides inside the elevator car, it will form a straight line and be fixed in position. During normal use, the spring 15 will provide a rebound force, which allows the bracket 8 to cooperate with the two sides of the elevator car 1 to complete the fixation.

[0028] A knob 10 is provided on the top of the front of the bracket 8. The knob 10 is adapted to the through groove. The bottom of the bracket 8 passes through the outer shell 7 and extends to the outside of the outer shell 7.

[0029] A base plate 9 is fixedly installed at the bottom of the bracket 8. Rollers 11 are rotatably installed on both sides of the base plate 9. The rollers 11 can reduce the friction when the bracket 8 slides on the inner wall of the elevator car 1, making it smoother for the user when pressing down.

[0030] The working principle and usage process of this invention are as follows: When installing the elevator car 1, after the sill is installed, the staff needs to move the elevator car 1 floor by floor to check whether the bottom of the elevator car 1 is on the same plane as the floor. If there is an error, the error data needs to be recorded floor by floor for later improvement and debugging. When performing data testing, first open the outer shell 7 on both sides of the bottom of the fixing plate 3 outward. After the outer shell 7 rotates and opens a certain distance with the rotational connection point with the fixing plate 3 as the center, the user presses down on the fixing plate 3, and the rollers 11 on both sides of the bottom plate 9 of the outer shell 7 will drive the outer shell 7 to rotate and open outward. After the rollers 11 are opened and pressed against the inner walls of both sides of the elevator car 1, the bracket 8 will be driven to compress the spring 15 inward, so that the two outer shells 7 will open and be fixed in a straight line inside the elevator car 1. The telescopic bracket 8 can adapt to different sizes of elevator car 1. If further movement is required, the knob 10 can be rotated and tightened to fix the bracket 8. The fixing plate 3 should be fixed so that the outer edge of the base plate 404 is close to the bottom sill of the elevator car 1. The installation position should not be too far from the outer edge of the bottom sill of the elevator car 1. After the fixing plate 3 is fixed, the elevator car 1 can be started to move. After elevator car 1 moves to the designated floor, if the height of the elevator car 1 sill is lower than the floor level, the user first turns on the laser rangefinder 2, then moves the laser rangefinder 2 to one side. The laser rangefinder 2 will drive the slide plate 13 and slide rail 12 to move laterally along the connector on the front of the fixed plate until the laser rangefinder 2 moves to the reference area at the top of the reference plate 404, where the laser at its bottom hits the reference area. First, measure the distance from the laser rangefinder 2 to the reference plate 404. Then, move the laser rangefinder 2 laterally to the refraction area on the other side of the reference plate 404. The laser on the laser rangefinder 2 will fall onto the refraction mirror 408 through the through hole 405 and be refracted 90° by the refraction mirror 408. Then, the user holds the handle 406 to control the reference plate 404 to move upward. While moving, the user judges the reference plate 404 by observing the refracted laser. Check if position 04 is flush with the floor. Once flush, tighten the fixing screws 407 to fix the reference plate 404. After fixing, move the laser rangefinder 2 back to the reference area and record the distance again. This will give you the height difference between the elevator car 1 and the floor. If the height of the elevator car 1 sill is higher than the floor height after the elevator car 1 moves to another floor, turn on the laser rangefinder 2 and record the distance by hitting the reference area on the reference plate 404. After recording, pull the laser rangefinder 2 outward. The laser rangefinder 2 will drive the slide plate 13 to move outward parallel to the slide rail 12. At this time, pull the laser rangefinder 2 to the outside of the elevator car 1 and measure the floor height. This will give you the height difference between the two. After measuring, move it back to the initial position and continue to test the next floor.

[0031] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An elevator installation gap measuring device, comprising a fixing plate (3) and an elevator car (1), characterized in that: The top and bottom of the back of the fixing plate (3) are provided with handles (14), and the front of the fixing plate (3) is provided with a measuring structure (4). The measuring structure (4) includes a reference plate (404). The top of the reference plate (404) is divided into two areas, namely the reference area and the refraction area. A through hole (405) is provided on the top and one side of the front of the reference plate (404). A refraction mirror (408) is provided inside the through hole (405). A movable rod (403) is fixedly provided on the rear side of the top of the reference plate (404). A handle (406) is provided on one side of the reference plate (404). The elevator car (1) is equipped with elevator equipment (5) on its exterior, and the fixing plate (3) is temporarily installed inside the elevator car (1) for operation during use.

2. The elevator installation gap measuring device according to claim 1, characterized in that: The movable rod (403) is slidably provided with a housing (401) on its outside, and the front of the housing (401) is provided with a movable groove.

3. The elevator installation gap measuring device according to claim 2, characterized in that: The movable rod (403) has a fixing screw (407) on its front side, which is used to control the movable rod (403) to be fixed when the housing (401) slides.

4. The elevator installation gap measuring device according to claim 2, characterized in that: A connecting frame (402) is provided on the back of the housing (401), and the back of the connecting frame (402) is fixedly connected to the front of the fixing plate (3).

5. The elevator installation gap measuring device according to claim 1, characterized in that: The top of the front of the fixing plate (3) is provided with a connector. The main body of the connector is a rectangular block, and a slide rail (12) is slidably provided on the front of the connector.

6. The elevator installation gap measuring device according to claim 5, characterized in that: A slide plate (13) is slidably mounted on the slide rail (12), and a laser rangefinder (2) is mounted between the two slide plates (13) on opposite sides.

7. The elevator installation gap measuring device according to claim 1, characterized in that: The bottom of the fixing plate (3) is provided with a base (6), and the bottom sides of the base (6) are rotatably provided with outer shells (7), and the front of the outer shells (7) is provided with through grooves.

8. The elevator installation gap measuring device according to claim 7, characterized in that: The outer shell (7) has an internal cavity, and a spring (15) is fixedly installed on the top of the inner wall of the cavity. A bracket (8) is installed at the bottom of the spring (15).

9. The elevator installation gap measuring device according to claim 8, characterized in that: A knob (10) is provided on the top of the front of the bracket (8). The knob (10) is adapted to the through groove. The bottom of the bracket (8) penetrates the outer shell (7) and extends to the outside of the outer shell (7).

10. The elevator installation gap measuring device according to claim 8, characterized in that: The bottom of the bracket (8) is fixedly provided with a base plate (9), and rollers (11) are rotatably provided on both sides of the base plate (9).

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