Device for detecting gap between elevator door knife door ball and sill based on laser ranging

Abstract

The utility model relates to the technical field of elevator detection, in particular to an elevator door knife door ball and sill gap detection device based on laser ranging. The detection device comprises a measurement host unit and a displacement measurement unit, the measurement host unit comprises a magnetic attraction seat, a horizontal adjustment assembly is arranged at the upper end of the magnetic attraction seat, a lifting adjustment assembly is arranged at the upper end of the horizontal adjustment assembly, a measurement host is arranged at the upper end of the lifting adjustment assembly, and the measurement host comprises a shell. A circuit board, a laser ranging module and a lithium battery are arranged in the shell, and an opening for laser to pass through is formed in the shell; the displacement measuring unit comprises a universal magnetometer base, a universal frame is arranged at the upper end of the universal magnetometer base, the upper end of the universal frame is connected with a displacement measuring assembly through a connecting assembly, and the displacement measuring assembly comprises an encoder and a tachometer wheel connected with the encoder. The horizontal adjustment assembly of the measurement host unit can ensure the accuracy of measurement, and the device is flexible and convenient to adjust, convenient to measure and light and handy.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator detection, in particular to a device for detecting the gap between an elevator door blade, door ball and a sill based on laser ranging. Background Art

[0002] Elevators rely on door knives to insert and separate two door balls at each floor's stop position, unlocking the door lock device to achieve parking at each floor and opening and closing the elevator floor doors and car doors. If the gap between the door knife and the floor door sill, and between the door ball and the car is too large, the door knife and door ball can easily disengage, preventing the door lock device from opening, resulting in malfunctions such as the floor door not opening and people being locked in. If the gap is too small, it may cause the elevator to collide while in operation, and in severe cases, the floor door and car door may be pulled apart. As the number of floors increases and the elevator speed increases, the consequences of the collision may directly endanger the safety of people in the car. Therefore, it is very important to control the gap between the elevator door knife and the floor door sill, and between the door ball and the car door. Item 6.12 of the elevator inspection and testing specification TSGT7001-2009 "Rules for Elevator Supervision Inspection and Periodic Inspection - Traction and Forced Drive Elevators", Item A1.2.7.10 of TSGT7001-2023 "Rules for Elevator Supervision Inspection and Periodic Inspection", and Item A1.2.7.8 of TSGT7008-2023 "Elevator Self-Inspection Rules" all require that "the gap between the car door knife and the floor door sill, and the floor door lock roller and the car sill should be no less than 5mm; and the elevators should not rub against each other during operation."

[0003] Currently, most inspection methods rely on manual measurement. When measuring the gap between the door ball and the car sill, inspectors use a steel ruler inside the car. When measuring the gap between the door knife and the floor door sill, inspectors need to use a steel ruler at the landing station. During measurement, the elevator needs to close the floor and car doors for maintenance. People inside the car cannot accurately observe the door ball position, so they generally rely on personnel on the car roof to observe the approximate position. These personnel visually inspect the door knife and door ball positions with the floor doors closed and the elevator under maintenance, often requiring repeated attempts to find the correct position. This method of inspection has low measurement accuracy and efficiency. Furthermore, inspectors need to enter and exit the car roof at each landing to measure relevant data, increasing safety risks.

[0004] Chinese patent application number 202121231500.8 discloses a device for detecting the gap between an elevator sill and a door knife and a roller, including a measuring host mechanism and a displacement measuring mechanism. The measuring host mechanism includes a measuring host assembly, a supporting and fixing assembly and a rotating table; the measuring host assembly is mounted on the rotating table; the rotating table is mounted on the supporting and fixing assembly; the measuring host assembly includes a shell and a battery, a laser ranging module and a circuit board installed in the shell; the displacement measuring mechanism includes a displacement measuring assembly, a connector and a universal magnetic base; the displacement measuring assembly is mounted on the universal magnetic base through the connector; the displacement measuring assembly includes an installation body, an encoder device and an outer wheel device; the installation body is connected to the universal magnetic base through the connector; the encoder device and the outer wheel device are arranged on the installation body.

[0005] The above-mentioned detection device has high stability and can improve inspection efficiency. The rotating table can rotate the measuring host 360° and adjust the appropriate measurement angle. However, in actual application, its measurement process requires manual cooperation to measure multiple sets of spacing data. Its testing process is complicated. As can be seen from its attached drawings, two laser ranging modules are provided inside the measuring host. The measurement process requires the cooperation of the two laser ranging modules. To this end, it is necessary not only to ensure the installation angle of the two laser ranging modules, but also to ensure their levelness. However, the measuring host mechanism does not have a level adjustment function, so the levelness of the laser ranging module cannot be guaranteed, which in turn affects the measurement results. In addition, its structure is complex and the production cost is high. Utility Model Content

[0006] The purpose of the utility model is to solve the technical problem that the existing elevator sill and door knife, roller gap detection device has a complex structure and cannot ensure the horizontal test of the laser ranging module, which affects the measurement results. The utility model provides an elevator door knife, door ball and sill gap detection device based on laser ranging. The measuring host unit can adjust the horizontality of the measuring host through the horizontal adjustment component to ensure the accuracy of the measurement data. The device is flexible and convenient to adjust, easy to measure, lightweight, easy to install, and a single instrument can complete all measurements without the need for auxiliary devices.

[0007] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a device for detecting the gap between elevator door blade, door ball and sill based on laser ranging, comprising a measuring host unit and a displacement measuring unit.

[0008] The measuring host unit includes a magnetic base, a horizontal adjustment component is provided on the upper end of the magnetic base, a lifting adjustment component is provided on the upper end of the horizontal adjustment component, and a measuring host is provided on the upper end of the lifting adjustment component. The measuring host includes a housing, a circuit board, a laser ranging module and a lithium battery are provided in the housing, the circuit board is electrically connected to the laser ranging module and the lithium battery respectively, an opening for the laser to pass through is opened on the housing, and the laser ranging module is provided at the opening;

[0009] The displacement measuring unit includes a universal magnetic table base, a universal frame is provided at the upper end of the universal magnetic table base, the upper end of the universal frame is connected to the displacement measuring component through a connecting component, the displacement measuring component includes an encoder and a tachometer wheel connected to the encoder, and the encoder is electrically connected to the measurement host component.

[0010] The control wheel that is located at the top of the control wheel is the control wheel, and the control wheel shaft is fixed with a button bar, and a push-button button bar is installed in the rotation on the touch screen.

[0011] Furthermore, a locking ring is threadedly connected to the adjusting screw, and the locking ring includes a large diameter end and a small diameter end located below it. The locking ring is threadedly connected to the adjusting screw through the small diameter end, and the inner diameter of the large diameter end of the locking ring matches the outer diameter of the copper sleeve.

[0012] Furthermore, the lifting adjustment assembly includes a sleeve rod and a lifting rod, the sleeve rod is connected to the upper end of the horizontal adjustment assembly, the inner wall of the sleeve rod is provided with mutually symmetrical limit strips along the vertical direction of the sleeve rod, the upper outer wall of the sleeve rod is provided with an external thread, the lower end of the lifting rod is sleeved with a plug sleeve, and the plug sleeve is provided with a limit groove matching the limit strip, the lifting rod is slidably inserted in the sleeve rod through the limit groove and the limit strip, and a threaded sleeve is movably provided on the lifting rod, and the threaded sleeve is threadedly connected to the external thread of the sleeve rod to lock and fix the lifting rod.

[0013] Furthermore, the connecting assembly includes a connecting seat, a mounting seat and a compression spring. The connecting seat is connected to the upper end of the universal mount, and a U-shaped opening groove is provided on the connecting seat. The mounting seat is connected to the U-shaped opening groove of the connecting seat through a connecting bolt and a fastening nut. The middle part of the compression spring is a frame-type structure, and the frame-type structure part of the compression spring is pressed on the mounting seat. The two ends of the compression spring are wrapped around the connecting bolts, and the end of the mounting seat away from the connecting seat is connected to the displacement measurement assembly.

[0014] Furthermore, the encoder is connected to one side of the mounting seat, and the encoder is coaxially connected to the tachometer wheel through a top screw. The tachometer wheel is located on the other side of the mounting seat. A threaded hole is provided on the side wall of the tachometer wheel close to one end of the encoder, and a tightening bolt is passed through the threaded hole. The end of the tightening bolt tightens the output shaft of the encoder.

[0015] Furthermore, the end of the tachometer wheel away from the encoder has an opening, and an annular magnet is provided in the tachometer wheel. The annular magnet is sleeved on the axle of the tachometer wheel, and the end of the axle of the tachometer wheel close to the opening end is sleeved with a retaining spring for preventing the annular magnet from falling off.

[0016] Furthermore, the gimbal includes a first gimbal rod and a second gimbal rod, one end of the first gimbal rod is connected to the gimbal magnetic table base, the other end of the first gimbal rod is locked and fixed to one end of the second gimbal rod through a locking knob, and the other end of the second gimbal rod is connected to the connecting assembly.

[0017] Furthermore, an acrylic plate is embedded in the shell to facilitate signal transmission.

[0018] Furthermore, a switch and an aviation plug are provided on the housing, and the switch and the aviation plug are electrically connected to the circuit board respectively.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) The utility model is a device for detecting the gap between the elevator door blade, door ball and sill based on laser ranging. The measuring host unit is provided with a horizontal adjustment component and a lifting adjustment component. The horizontal adjustment component can adjust the horizontality of the measuring host to ensure the accuracy of the measurement data. The lifting adjustment component can adjust the height of the measuring host. The device is flexible and convenient to adjust, and is easy to operate. The displacement measuring unit can accurately measure the running height of the elevator car in the shaft through the cooperation of the speed measuring wheel and the encoder. The data fusion technology is adopted to realize two-dimensional space measurement through laser ranging and acceleration data, and the position relationship between the door blade of the car door and the floor door sill, and the door ball and the car door on different floors is constructed. The equipment is lightweight and easy to install. A single instrument can complete all measurements without the need for auxiliary devices.

[0021] (2) The utility model is a device for detecting the gap between the elevator door knife, door ball and sill based on laser ranging. The horizontal adjustment component is provided with three sets of adjustment structures. By adjusting the fine-tuning knob, the adjusting screw and the copper sleeve can be driven to move up and down. At the same time, under the sliding cooperation of the guide ball and the arc groove of the lower base, the adjusting screw can be tilted to a certain angle, thereby adjusting the horizontality of the upper base. Through the cooperation of the limit bolt and the limit spring, the displacement of the adjusting screw can be limited to prevent it from falling off. Through the side level and the top level, it is convenient to observe the horizontality of the measuring device in the fine-tuning process in all directions, thereby ensuring the horizontality of the measuring host. By setting a locking ring, the stability of the horizontal adjustment component can be guaranteed, thereby ensuring the measurement accuracy.

[0022] (3) The utility model is a device for detecting the gap between the elevator door blade, door ball and sill based on laser ranging. The displacement measuring component can better press the speed measuring wheel onto the guide rail through the compression spring. At the same time, the annular magnet inside the speed measuring wheel can better adsorb it onto the guide rail. The locking structure of the universal magnetic table base ensures the stability of the displacement measuring unit. It is easy and quick to operate and has the characteristics of simple structure, compact appearance, easy to carry and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging in the present utility model.

[0024] Figure 2 This is a structural front view of the measuring main unit of the elevator door blade, door ball and sill gap detection device based on laser ranging in the utility model.

[0025] Figure 3 for Figure 2 AA section view.

[0026] Figure 4 This is a structural diagram of the lifting rod of the utility model.

[0027] Figure 5 This is the internal structure diagram of the measuring host of the utility model.

[0028] Figure 6 This is a schematic diagram of the assembly of the connection component and the displacement measurement component of the utility model.

[0029] Figure 7 Schematic diagram of the gap to be measured in the elevator shaft.

[0030] Figure 8 The utility model is a schematic diagram of the application of the device for detecting the gap between the elevator door blade, door ball and sill based on laser ranging.

[0031] Figure 9 This is a schematic diagram of the results of the clearance detection between the elevator door blade, door ball and sill in the utility model.

[0032] In the figure: 1. Magnetic base, 2. Level adjustment assembly, 201. Upper base, 202. Side level, 203. Top level, 204. Copper sleeve, 205. Adjusting screw, 206. Locking ring, 207. Fine adjustment knob, 208. Connecting sleeve, 209. Guide ball, 210. Lower base, 211. Limit bolt, 212. Limit spring, 3. Lifting adjustment assembly, 301. Sleeve rod, 302. Limit bar, 303. Lifting rod, 304. Insert sleeve, 305. Limit groove, 306. Threaded sleeve, 4. Measuring host, 401. Housing, 402. Circuit board, 403. Laser ranging module, 404. Lithium battery, 4 05. Battery pressure plate, 406. Opening, 407. Switch, 408. Aviation plug, 409. Acrylic plate, 5. Universal magnetic meter base, 6. Universal mount, 601. First universal rod, 602. Second universal rod, 603. Locking knob, 7. Connecting assembly, 701. Connecting base, 702. Mounting base, 703. Compression spring, 704. Connecting bolt, 705. Fastening nut, 8. Displacement measurement assembly, 801. Encoder, 802. Tachometer wheel, 803. Jackscrew, 804. Ring magnet, 805. Circlip, 9. Car door blade, 10. Landing door sill, 11. Landing door lock roller, 12. Car sill, 13. Car roof. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0034] like Figure 1-6 The device for detecting the gap between an elevator door blade, door ball and sill based on laser ranging includes a measuring host unit and a displacement measuring unit.

[0035] The measuring host unit includes a magnetic base 1, a horizontal adjustment component 2 is provided on the upper end of the magnetic base 1, a lifting adjustment component 3 is provided on the upper end of the horizontal adjustment component 2, and a measuring host 4 is provided on the upper end of the lifting adjustment component 3.

[0036] The level adjustment assembly 2 includes an upper base 201 and a lower base 210. Two side levels 202 are provided at intervals on the outer edge of the upper base 201. A top level 203 is provided at the upper end of the upper base 201. Three copper sleeves 204 are provided at intervals on the lower end of the upper base 201. The lower end of the copper sleeve 204 is fixedly connected to an adjusting screw 205. A fine-tuning knob 207 is threadedly connected to the adjusting screw 205. A connecting sleeve 208 is provided at the lower end of the connecting sleeve 208. A hemispherical guide ball 209 is embedded at the lower end of the connecting sleeve 208. An arc groove and a guide ball 209 connected to the arc groove are provided on the lower base 210. Through hole, the spherical part of the hemispherical guide ball 209 slides in conjunction with the arc groove, a limiting bolt 211 is passed through the through hole, and the limiting bolt 211 is gap-fitted with the through hole. The use of gap fit can enable the guide ball 209 to slide and adjust, thereby driving the adjusting screw 205 to tilt to adjust the horizontality of the upper base 201. The upper end of the limiting bolt 211 passes through the guide ball 209 and is connected to the adjusting screw 205. A limiting spring 212 is sleeved on the limiting bolt 211, and the two ends of the limiting spring 212 are respectively abutted against the head of the limiting bolt 211 and the bottom of the lower base 210, and the lower base 210 is connected to the magnetic base 1.

[0037] Preferably, a locking ring 206 is also threadedly connected to the adjusting screw 205. The locking ring 206 includes a large diameter end and a small diameter end located below it. The locking ring 206 is threadedly connected to the adjusting screw 205 through the small diameter end. The inner diameter of the large diameter end of the locking ring matches the outer diameter of the copper sleeve 204. After adjusting the level of the upper base 201 by the fine-tuning knob 207, the locking ring 206 is adjusted to the upper end of the adjusting screw 205 for locking and fixing.

[0038] The lifting adjustment assembly 3 includes a sleeve rod 301 and a lifting rod 303. The sleeve rod 301 is connected to the upper end of the upper base 201 by bolts. The inner wall of the sleeve rod 301 is provided with mutually symmetrical limit strips 302 along the vertical direction of the sleeve rod 301. The outer wall of the upper end of the sleeve rod 301 is provided with an external thread. The lower end of the lifting rod 303 is sleeved with a sleeve 304, and the sleeve 304 is provided with a limit groove 305 matching the limit strip 302. The lifting rod 303 is slidably inserted into the sleeve rod 301 through the limit groove 305 and the limit strip 302. A threaded sleeve 306 is movably sleeved on the lifting rod 303, and the threaded sleeve 306 is threadedly connected to the external thread of the sleeve rod 301 to lock and fix the lifting rod 303.

[0039] The measuring host 4 includes a shell 401, in which a circuit board 402, a laser ranging module 403 and a lithium battery 404 are arranged. The lithium battery 404 is installed in the shell 401 through a battery pressure plate 405. The circuit board 402 is electrically connected to the laser ranging module 403 and the lithium battery 404 respectively. An opening 406 for the laser to pass through is opened on the shell 401, and the laser ranging module 403 is located at the opening 406. A switch 407 and an aviation plug 408 are provided on the shell 401. The switch 407 and the aviation plug 408 are electrically connected to the circuit board 402 respectively. An acrylic plate 409 is embedded in the shell 401 to facilitate signal transmission. The setting of the acrylic plate 409 can ensure the effective transmission of wireless signals.

[0040] The displacement measuring unit includes a universal magnetic meter base 5, a universal frame 6 is provided at the upper end of the universal magnetic meter base 5, the upper end of the universal frame 6 is connected to the displacement measuring component 8 through the connecting component 7, the displacement measuring component 8 includes an encoder 801 and a tachometer wheel 802 connected to the encoder 801, and the encoder 801 is electrically connected to the circuit board 402.

[0041] The gimbal 6 includes a first gimbal rod 601 and a second gimbal rod 602. One end of the first gimbal rod 601 is connected to the gimbal magnetic table base 5. The other end of the first gimbal rod 601 is locked and fixed to one end of the second gimbal rod 602 through a locking knob 603. The other end of the second gimbal rod 602 is connected to the connecting assembly 7.

[0042] The connecting assembly 7 includes a connecting seat 701, a mounting seat 702 and a compression spring 703. The connecting seat 701 is connected to the other end of the second universal rod 602. A U-shaped opening groove is provided on the connecting seat 701. The mounting seat 702 is connected to the U-shaped opening groove of the connecting seat 701 through a connecting bolt 704 and a fastening nut 705. The middle part of the compression spring 703 is a frame-type structure. The frame-type structure part of the compression spring 703 is pressed on the mounting seat 702. Both ends of the compression spring 703 are wrapped around the connecting bolt 704. The end of the mounting seat 702 away from the connecting seat 701 is connected to the encoder 801.

[0043] The encoder 801 is installed on one side of the mounting base 701. The encoder 801 is coaxially connected to the tachometer wheel 802 through the top screw 803. The tachometer wheel 802 is located on the other side of the mounting base 701. A threaded hole (not shown in the figure) is provided on the side wall of the tachometer wheel 802 near one end of the encoder 801. A tightening bolt (not shown in the figure) is passed through the threaded hole. The end of the tightening bolt presses the output shaft of the encoder 801.

[0044] Preferably, the end of the tachometer wheel 802 away from the encoder 801 has an opening, and two annular magnets 805 are provided in the tachometer wheel 802. The two annular magnets 805 are both mounted on the axle of the tachometer wheel 802. The end of the axle of the tachometer wheel 802 close to the open end is mounted with a retaining spring 806 for preventing the annular magnets 805 from falling off.

[0045] The working principle of the elevator door knife, door ball and sill gap detection device based on laser ranging to measure the gap between the car door knife and the floor door sill, and the floor door lock roller and the car sill is as follows:

[0046] Inspection regulations require that the gap between the car door knife 9 and the floor door sill 10, and the floor door lock roller 11 and the car sill 12 should be no less than 5mm, that is, Figure 7 The values ​​y1 and y2 should not be less than 5mm.

[0047] y1: distance from car door blade 9 to landing door threshold 10

[0048] y2: Distance from landing door lock roller 11 to car sill 12

[0049] When in use, the measuring host unit is installed on the car roof 13. The measuring host unit is adsorbed at a suitable position on the car roof 13 through the magnetic base 1. The magnetic base 1 can ensure the stability of the measuring process of the measuring host 4. By adjusting the horizontal adjustment component 2 and the lifting adjustment component 3, the laser is made perpendicular to the roller.

[0050] The horizontal adjustment component 2 is provided with three sets of adjustment structures. The adjustment fine-tuning knob 207 drives the adjusting screw 205 and the copper sleeve 204 to move up and down. At the same time, with the sliding cooperation between the guide ball 209 and the arc groove of the lower base 210, the adjusting screw 205 can be tilted to a certain angle, thereby adjusting the levelness of the upper base 201. Through the cooperation of the limit bolt 211 and the limit spring 212, the displacement of the adjusting screw 205 can be limited to prevent it from falling off. Through the side level 202 and the top level 203, it is convenient to observe the levelness of the measuring device in all directions during the fine-tuning process, thereby ensuring the levelness of the measuring host 4. By setting the locking ring 206, the stability of the horizontal adjustment component 2 can be guaranteed, and the measurement accuracy can be guaranteed.

[0051] The lifting and adjusting component 3 is provided with a sleeve rod 301 and a lifting rod 303. Loosen the threaded sleeve 306, and adjust the lifting rod 303 to move up and down through the cooperation of the limit bar 302 and the limit groove 305. After adjusting to the appropriate position, tighten the threaded sleeve 306 to fix the lifting and adjusting component 3. The sleeve rod 301 and the lifting rod 303 are plugged in and matched through the limit bar 302 and the limit groove 305. The structure is simple and the operation is convenient.

[0052] The displacement measuring unit is adsorbed on the car roof 15 via a universal magnetic base 5 and determines the position as the elevator runs. The universal magnetic base 5 can ensure the stability of the displacement measuring unit during the measurement process. The speed measuring wheel 802 is pressed against the guide rail by the compression spring 703. At the same time, the annular magnet 805 inside the speed measuring wheel 802 can better adsorb it on the guide rail. It is easy and quick to operate and has a simple structure, a compact appearance, is easy to carry, and has good practicality.

[0053] The steps are as follows:

[0054] like Figure 8 As shown, after the instrument is installed, place the car on the top floor and use a vernier caliper to measure the distance a1 between the top floor door sill 10 and the car sill 12;

[0055] Move the car down at the inspection speed, move the car door blade 9 to the top floor door sill 10, and use a vernier caliper to measure the distance a2 between the car door blade 9 and the top floor door sill 10. The purpose of this step is to use the top floor door sill 10 as a reference to facilitate subsequent calculations of the distance between the car door blade 9 and the measuring host 4;

[0056] The car is moved downwards further, so that the laser of the measuring host 4 hits the top floor door sill 10, and the distance a3 from the laser measuring host 4 to the top floor door sill 10 is measured;

[0057] Through the above measurements, we can get the distance b1 from the car door blade 9 to the measuring host 4, and the distance b2 from the car sill 12 to the measuring host 4.

[0058] b1=a3-a2

[0059] b2=a3-a1

[0060] After that, continuous measurement is performed and the plot is as follows Figure 9 Clearance curve at the position shown.

[0061] The laser distance x between b1 and b2 is the position of the roller, y2 = x-b2, and when y2 is less than 5mm, it is an unqualified position.

[0062] The laser distance measurement x is above b1 for other positions, y1 = x-b1, and when y1 is less than 5mm, it is an unqualified position.

[0063] The measurement host is responsible for collecting laser data and transmitting the data to the intelligent terminal. The intelligent terminal processes the distance value and obtains the clearance data between the elevator door blade and the floor door sill, and between the door ball and the car through the mathematical module, and prints and saves it.

[0064] The utility model of the elevator door knife door ball and sill gap detection device based on laser ranging can also be used to measure the verticality of the door knife. Its working principle is as follows:

[0065] Place the measurement host unit on the floor, adjust the horizontal adjustment component 2 and the lifting adjustment component 3 to make the laser perpendicular to the car door blade 9, and the displacement measurement unit is adsorbed on the car roof 15 through the universal magnetic table base 5. The position is determined as the elevator runs. After the instrument is installed, move the car down or up at the maintenance speed, and project the laser onto the car door blade 9. The measurement host is responsible for collecting laser data and transmitting the data to the intelligent terminal. The intelligent terminal processes the distance value and obtains the verticality data of the car door blade through the mathematical module, and prints and saves it.

[0066] The utility model discloses a device for detecting the gap between elevator door knife, door ball and sill based on laser ranging. The measuring host unit is provided with a horizontal adjustment component and a lifting adjustment component. The horizontal adjustment component can adjust the horizontality of the measuring host to ensure the accuracy of the measurement data. The lifting adjustment component can adjust the height of the measuring host. The device is flexible and convenient to adjust, and is convenient for measurement operation. The displacement measuring unit can accurately measure the running height of the elevator car in the shaft through the cooperation of the speed measuring wheel and the encoder. The data fusion technology is adopted to realize two-dimensional space measurement through laser ranging and acceleration data, and the position relationship between the door knife of the car door and the floor door sill, and the door ball and the car door on different floors is constructed. The big data analysis design method is adopted to establish a gap mapping model between the door knife and the floor door sill, and the door ball and the car door, thereby improving the accuracy and applicability of the detection method. In addition, the device can also measure the verticality of the car door knife, thereby improving the multifunctionality of the detection device and saving the detection cost. The device adopts circuit integration design, the equipment is lightweight and easy to install, and a single instrument can complete all measurements without auxiliary devices.

[0067] The above content is a further detailed description of the present invention in conjunction with the preferred technical solution, and the specific implementation of the present invention cannot be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, simple deductions and substitutions can be made without departing from the concept of the present invention, and all of these should be considered as within the scope of protection of the present invention.

Claims

1. A device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging, characterized by: Including measurement host unit and displacement measurement unit, The measuring host unit includes a magnetic base, a horizontal adjustment component is provided on the upper end of the magnetic base, a lifting adjustment component is provided on the upper end of the horizontal adjustment component, and a measuring host is provided on the upper end of the lifting adjustment component. The measuring host includes a housing, a circuit board, a laser ranging module and a lithium battery are provided in the housing, the circuit board is electrically connected to the laser ranging module and the lithium battery respectively, an opening for the laser to pass through is opened on the housing, and the laser ranging module is provided at the opening; The displacement measuring unit includes a universal magnetic table base, a universal frame is provided at the upper end of the universal magnetic table base, the upper end of the universal frame is connected to the displacement measuring component through a connecting component, the displacement measuring component includes an encoder and a tachometer wheel connected to the encoder, and the encoder is electrically connected to the measurement host component.

2. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 1, characterized in that: The adjusting screw is fixedly mounted on the adjusting base and the adjusting base, and the adjusting screw is threadably connected to the adjusting screw by a threaded connection. The lower end of the adjusting screw is provided with a connecting sleeve, and a guide ball is embedded in the lower end of the connecting sleeve. The lower base is provided with an arc groove and a through hole connected to the arc groove. The guide ball slides in the arc groove, and a limit bolt is passed through the through hole, and the limit bolt is gap-fitted with the through hole. The upper end of the limit bolt passes through the guide ball and is connected to the adjusting screw. A limit spring is provided on the limit bolt, and the two ends of the limit spring respectively abut against the head of the limit bolt and the bottom of the lower base, and the lower base is connected to the magnetic suction seat.

3. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 2, characterized in that: The adjusting screw is also threadedly connected with a locking ring, which includes a large diameter end and a small diameter end located below it. The locking ring is threadedly connected to the adjusting screw through the small diameter end, and the inner diameter of the large diameter end of the locking ring matches the outer diameter of the copper sleeve.

4. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 1, characterized in that: The lifting adjustment assembly includes a sleeve rod and a lifting rod. The sleeve rod is connected to the upper end of the horizontal adjustment assembly. The inner wall of the sleeve rod is provided with mutually symmetrical limit strips along the vertical direction of the sleeve rod. The outer wall of the upper end of the sleeve rod is provided with an external thread. The lower end of the lifting rod is sleeved with a plug sleeve, and the plug sleeve is provided with a limit groove matching the limit strip. The lifting rod is slidably inserted in the sleeve rod through the limit groove and the limit strip. A threaded sleeve is movably provided on the lifting rod, and the threaded sleeve is threadedly connected to the external thread of the sleeve rod to lock and fix the lifting rod.

5. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 1, characterized in that: The connecting assembly includes a connecting seat, a mounting seat and a compression spring. The connecting seat is connected to the upper end of the universal mount. A U-shaped opening groove is provided on the connecting seat. The mounting seat is connected to the U-shaped opening groove of the connecting seat through a connecting bolt and a fastening nut. The middle part of the compression spring is a frame-type structure. The frame-type structure part of the compression spring is pressed on the mounting seat. The two ends of the compression spring are wrapped around the connecting bolts. The end of the mounting seat away from the connecting seat is connected to the displacement measurement assembly.

6. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 5, characterized in that: The encoder is connected to one side of the mounting seat, and the encoder is coaxially connected to the tachometer wheel through a top screw. The tachometer wheel is located on the other side of the mounting seat. A threaded hole is provided on the side wall of the tachometer wheel near one end of the encoder, and a tightening bolt is passed through the threaded hole. The end of the tightening bolt presses the output shaft of the encoder.

7. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 6, characterized in that: The end of the tachometer wheel away from the encoder has an opening, and an annular magnet is arranged in the tachometer wheel. The annular magnet is sleeved on the axle of the tachometer wheel, and the end of the axle of the tachometer wheel close to the opening end is sleeved with a retaining spring for preventing the annular magnet from falling off.

8. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 1, characterized in that: The universal mount includes a first universal rod and a second universal rod, one end of the first universal rod is connected to the universal magnetic table base, the other end of the first universal rod is locked and fixed to one end of the second universal rod through a locking knob, and the other end of the second universal rod is connected to the connecting assembly.

9. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to claim 1, characterized in that: An acrylic plate is embedded in the shell to facilitate signal transmission.

10. The device for detecting the gap between an elevator door blade, door ball, and sill based on laser ranging according to any one of claims 1 to 9, characterized in that: The housing is provided with a switch and an aviation plug, and the switch and the aviation plug are electrically connected to the circuit board respectively.

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