A measuring device and method for gate slot installation

Abstract

The present invention relates to a measuring device and a measuring method for gate slot installation in the field of gate surveying and mapping technology, comprising a trolley body, rear wheels are rotated at both ends of one side of the bottom of the trolley body, and drivers are installed at both ends of the other side of the bottom of the trolley body, and the driving end of the driver is installed with a directional front wheel, and an adsorption and adhesion component is installed on the trolley body, and the adsorption and adhesion component includes two inlets and outlets opened at the bottom of the trolley body, and the inner walls of the inlets and outlets are plugged with lifting plates, and the bottoms of the lifting plates are installed with magnets. The present invention adopts an intelligent flatness measuring trolley to replace manual detection operations, and does not require personnel to perform high-altitude operations, thereby avoiding the risk of casualties, and also avoiding the interference of external conditions and the problem of deviation in human eye observation, thereby improving accuracy, accelerating construction progress, and forming a multi-point orderly measurement effect, so that the measured data can be directly output to the computer end through programming, and the data is more accurate and more intelligent.

Description

Technical Field

[0001] The present invention relates to the technical field of gate surveying and mapping, and in particular discloses a measuring device and a measuring method for gate slot installation. Background Art

[0002] Gates are crucial components of hydraulic structures. During gate installation, the quality of the gate slot installation directly impacts both installation and water-retaining effectiveness. Key inspection items for gate slot installation quality include: deviations of the main rail surface, waterstop plate, and gate slot center relative to the orifice center, as well as the flatness of the working surface. The NB / T35045 specification stipulates that the acceptable deviations of the gate slot main rail runner surface and waterstop plate relative to the gate slot center must be within a working range of -1 to +2 mm, the acceptable deviation relative to the orifice center must be within a working range of -3 to +3 mm, and the acceptable deviation of the working surface flatness must be ≤2 mm. The spacing between adjacent measuring points must be ≤1 meter. Among these inspection items, the flatness of the main rail runner surface and waterstop plate surface directly impacts the gate's water-sealing effectiveness.

[0003] At present, in traditional inspection work, the inspection method for the above deviation is the vertical piano wire method, that is, a piano wire is hung at the top of the door slot, and a weight is hung at the bottom of the piano wire. After the piano wire is stable, the minimum distance between the piano wire and the measured surface of the door slot is measured with a steel ruler at every 1m interval from the top to the bottom of the door slot. After the measurement, the minimum distance of each measuring point is compared to see the verticality of the door slot installation and the flatness (straightness) of the measured surface. Combined with the large span (the distance between the left and right main rails and the counter rails) and the small span (the distance between the main rail and the counter rail on the same side) of the top or bottom of the door slot, the deviation of the main rail and the counter rail from the center of the door slot and the deviation from the center of the orifice can be determined. However, in water conservancy projects, the use of traditional inspection work has certain shortcomings. The following are some problems: (1) The height of gate slots such as diversion tunnels, dam center holes, and surface holes is tens of meters. After the construction of the embedded parts of the gate slots is completed, a rack must be erected to assist in the acceptance. According to the specifications, the distance from the top to the bottom of the gate slot should be measured every 1m. Therefore, the construction work of the rack is large, and the inspection personnel also have certain risks of working at heights; (2) During the measurement process, the piano wire is easily disturbed by external interference conditions (such as wind, accidental collision, etc.) and swings. At this time, it takes a long time to wait for the piano wire to stabilize, which affects the acceptance efficiency and measurement accuracy; (3) When reading the steel ruler, the human eye's estimation of the distance is also biased, which can easily cause measurement errors. Therefore, a measuring device and a measuring method for gate slot installation are proposed to improve the above problems. Summary of the Invention

[0004] In view of the above-mentioned existing technologies, the technical problems to be solved by the present invention are that the existing technologies have a large engineering workload, there are certain risks for inspection personnel to work at heights, there will also be interference due to external conditions, and there will be deviations in the estimation of distance by the human eye.

[0005] Material toggling mechanism, its both ends are to be matched with the gear train of claim 1, wherein said linking rod and said adjusting base are connected along said cam path, and said linking rod has a bottom surface and said at least one movable frame, and said at least one movable frame is connected along said cam path.

[0006] A mounting plate is installed on the inner wall of the trolley body, and sliding sleeves are installed at both ends of the top of the mounting plate, touch rods are sliding in the sliding sleeves, and the bottom of the touch rods is fixed with a fixing plate, and the top of the fixing plate and the bottom of the mounting plate are installed with springs, the bottom of the trolley body is provided with a bottom groove for the touch rod and the spring to extend, and the bottom of the touch rod is installed with a pulley, connecting plates are provided on the two fixing plates, and a first inclination sensor is installed on the top of the connecting plate, mounting columns are fixed at the four corners of the top of the mounting plate, and an integrated circuit mainboard is installed on the top of the mounting column, and a single-chip microcomputer controller electrically connected to the first inclination sensor is installed on the integrated circuit mainboard.

[0007] The present invention is further configured such that a mounting groove is provided at a middle position of one end of the trolley body close to the directional front wheel, and a second inclination sensor is installed on the inner wall of the mounting groove, the driver is composed of a stepper motor and a gear assembly, and the stepper motor and the second inclination sensor are electrically connected to the single-chip controller, and the second inclination sensor is used to receive a signal when the trolley body deviates from the specified path when walking, and transmit the deviation signal to the single-chip controller to control the stepper motor to perform a correction operation.

[0008] The present invention is further configured such that the integrated circuit mainboard is used to store data sent by the single-chip microcomputer controller, and the single-chip microcomputer controller is used to perform mathematical operations on the angle values ​​sent by the first inclination sensor, and to send the results of the operations to a storage chip in the integrated circuit mainboard for storage.

[0009] The present invention is further configured such that a top cover is installed on the top of the vehicle body, and a display screen is installed on one end of the top of the top cover, and the display screen is electrically connected to the single-chip controller.

[0010] The present invention is further configured such that a battery is installed on one side of the top of the mounting plate, and the battery is electrically connected to the display screen, the driver, the first inclination sensor, the single chip controller and the second inclination sensor.

[0011] The present invention is further configured such that a handle groove is provided on the other side of the top of the top cover, and a handle frame is rotatably provided on the inner wall of the handle groove, and a grip groove is provided at the middle position of the bottom of the handle frame.

[0012] The present invention is further configured such that a guide block is fixed to one end of the lifting plate, and guide grooves for inserting the guide blocks are provided on the inner walls on both sides of the trolley body.

[0013] A method for measuring a gate slot for installation, applied to a measuring device for installing a gate slot, comprises the following steps:

[0014] Step 1: Place the car on the surface to be measured, use the lifting assembly and the adsorption and adhesion assembly to adjust the gap between the magnet and the surface to be measured, control the suction force of the magnet to ensure that the rear wheel and the directional front wheel and the pulley are in close contact with the surface to be measured, and use the single-chip controller to control the car to automatically crawl in the direction perpendicular to the surface to be measured;

[0015] Step 2: Use the second inclination sensor and the single-chip controller to control the car to travel along the specified path;

[0016] Step 3: Under the instruction of the single-chip microcomputer controller, the trolley moves intermittently with a cycle of advancing one wheelbase and pausing for 5 seconds, and records each pause point, i.e. A0-An. The deviation of each pause point of the measured surface is detected and recorded. The flatness of the door slot installation can be calculated through mathematical calculation, and the trolley displacement value and flatness of each measuring point are displayed on the display screen.

[0017] Step 4: In the rectangular coordinate system, set the reference point. The X-axis represents the ideal plumb plane and the displacement of the measuring trolley; the Y-axis represents the offset between the measuring trolley and the ideal plumb surface; the curve represents the contour of the measured surface of the door slot; point A0 represents the starting point of the measured surface, and point An represents the end point of the measured surface. Then, sort the verticality of n points to obtain the maximum, minimum and position of the verticality of each point on the measured surface of the door slot.

[0018] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art:

[0019] 1. The intelligent flatness measuring trolley for the gate slot is composed of a trolley body, magnet, rear wheel, lifting assembly, top cover, display screen, directional front wheel, driver, first inclination sensor, integrated circuit main board, single-chip microcomputer controller and second inclination sensor. The clearance between the magnet and the measured surface is adjusted under the cooperation of the lifting assembly and the adsorption and adhesion assembly, so that the entire measuring trolley can be in close contact with the measured surface. The single-chip microcomputer controller is used to control the entire measuring trolley to automatically crawl along the vertical direction of the measured surface. The measuring trolley is used instead of manual flatness detection operation, and there is no need for personnel to perform high-altitude operations, thereby avoiding the risk of casualties of measurement personnel, interference from external conditions and deviations in human eye observation, improving the accuracy of measuring the flatness of the gate slot, and accelerating the construction progress of the project.

[0020] 2. The second inclination sensor and single-chip controller are used to control the entire vehicle to travel along the specified path, so that the entire measuring vehicle has the characteristic of independently detecting its current posture in dynamics, preventing the measuring vehicle from offsetting during operation, ensuring the smooth and directional operation of the measuring vehicle and the measurement accuracy.

[0021] 3. The first inclination sensor, single-chip controller, sliding sleeve, feeler rod, spring, fixed plate and pulley are set. When the measuring trolley is in periodic intermittent motion, the pulley and feeler rod will move on the non-horizontal measured surface, synchronously driving the first inclination sensor to deflect. At this time, the offset corresponding to each pause point is recorded, and the flatness of the door slot installation can be calculated through mathematical calculations. The trolley displacement value and flatness of each measuring point can be displayed on the display screen, forming a multi-point measurement effect. The measured data can be directly output to the computer through programming, making the data more accurate and more intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a measuring device for gate slot installation according to the present invention;

[0023] Figure 2 This is a schematic structural diagram of a handle groove and a second inclination sensor of a measuring device for gate slot installation according to the present invention;

[0024] Figure 3 This is a front view of a measuring device for gate slot installation according to the present invention;

[0025] Figure 4 A bottom view of a measuring device for gate slot installation according to the present invention;

[0026] Figure 5 This is a front cross-sectional view of a measuring device for gate slot installation according to the present invention;

[0027] Figure 6 A cross-sectional view of a trolley body of a measuring device for gate slot installation according to the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the mounting plate and guide groove of a measuring device for gate slot installation according to the present invention;

[0029] Figure 8 This is a schematic structural diagram of a lifting assembly of a measuring device for gate slot installation according to the present invention;

[0030] Figure 9 This is a front view of a feeler rod and a connecting plate of a measuring device for gate slot installation according to the present invention;

[0031] Figure 10 The diagram is a principle diagram of a measurement method for gate slot installation according to the present invention.

[0032] Description of the numbers in the figure:

[0033] 1. Car body; 2. Magnet; 3. Rear wheel; 4. Lifting assembly; 401. Turntable; 402. Drive belt; 403. Drive rod; 404. Threaded column; 405. Worm gear; 406. Worm; 407. Guide groove; 408. Main shaft; 409. Double pulley; 410. Lifting plate; 411. Guide block; 5. Top cover; 6. Handle frame; 7. Display screen; 8. Directional front wheel; 9. Driver; 10. Bottom groove; 11. Connecting plate; 12. Inlet and outlet; 13. First inclination sensor; 14. Mounting plate; 15. Battery; 16. Integrated circuit main board; 17. Mounting column; 18. Single chip microcomputer controller; 19. Sliding sleeve; 20. Touch rod; 21. Spring; 22. Fixing plate; 23. Pulley; 24. Handle groove; 25. Second inclination sensor. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0035] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0037] The present invention provides a measuring device for gate slot installation, please refer to Figure 1-9 ,include:

[0038] The trolley body 1 has rear wheels 3 at both ends of one side of the bottom of the trolley body 1, and drivers 9 are installed at both ends of the other side of the bottom of the trolley body 1, and the driving end of the driver 9 is installed with a directional front wheel 8;

[0039] An adsorption and adhesion component is installed on the trolley body 1 and is used to adhere the rear wheel 3 and the directional front wheel 8 to the measured surface of the door slot. The adsorption and adhesion component includes two inlets and outlets 12 opened at the bottom of the trolley body 1, and the inner walls of the inlets and outlets 12 are plugged with L-shaped lifting plates 410. The bottoms of the lifting plates 410 are installed with magnets 2, which are permanent magnets. A lifting component 4 for adjusting the height of the two lifting plates 410 is installed on the trolley body 1. The lifting component 4 includes two transmission rods 403 and two threaded columns 404 rotating on the inner wall of the trolley body 1, and worms 406 are installed on the two transmission rods 403. The outer walls of the two threaded columns 404 are installed with worm wheels 405 meshing with the worms 406. The tops of the lifting plates 410 are provided with threaded holes that match the outer walls of the threaded columns 404. The main shaft 408 is rotated in the middle position of one end of the trolley body 1 near the rear wheel 3, and a turntable 401 is installed at one end of the main shaft 408. The other end of the main shaft 408 and one end of the outer wall of the two transmission rods 403 are both installed with double pulleys 409. The outer walls of the two adjacent double pulleys 409 are driven by a transmission belt 402. The turntable 401 in the lifting component 4 is used to drive the main shaft 408 to rotate, and the two transmission belts 402, three double pulleys 409 and two transmission rods 403 are driven to rotate. The meshing action of the worm 406 and the worm wheel 405 drives the lifting plate 410 and the magnet 2 in the adsorption and adhesion component to move, and adjusts the gap between the magnet 2 and the measured surface. By controlling the suction force of the magnet 2, the rear wheel 3 and the directional front wheel 8 and the pulley 23 are closely attached to the measured surface of the door slot, thereby ensuring the stability of the measuring trolley on the side.

[0040] A top cover 5 is mounted on the top of the vehicle body 1;

[0041] A mounting plate 14, the mounting plate 14 is mounted on the inner wall of the trolley body 1;

[0042] Mounting holes are provided at both ends of the top of the mounting plate 14, and sliding sleeves 19 are installed on the inner walls of the mounting holes. Touch rods 20 are slid on the inner walls of the sliding sleeves 19, and the bottom of the outer wall of the touch rods 20 are fixed with fixing plates 22. The top of the fixing plate 22 is installed with a spring 21 at the bottom of the mounting plate 14. A bottom groove 10 for the touch rod 20 and the spring 21 to extend is provided in the middle position of the bottom of the trolley body 1, and a pulley 23 is installed at the bottom of the touch rod 20. A connecting plate 11 is provided on the two fixing plates 22, and a first inclination sensor 13 is installed on the top of the connecting plate 11. Mounting columns 17 are fixed to the four corners of the top of the mounting plate 14, and an integrated circuit mainboard 16 is installed on the top of the mounting column 17. A single-chip microcomputer is installed on the integrated circuit mainboard 16 Controller 18, the single-chip controller 18 is electrically connected to the first inclination sensor 13, a mounting groove is provided in the middle position of one end of the trolley body 1 near the directional front wheel 8, and a second inclination sensor 25 is installed on the inner wall of the mounting groove, the driver 9 is composed of a stepper motor and a gear assembly, and the model of the stepper motor is 28BYJ-48, the stepper motor and the second inclination sensor 25 are electrically connected to the single-chip controller 18, the second inclination sensor 25 is used to receive a signal when the trolley body 1 deviates from the specified path when walking, and transmit the deviation signal to the single-chip controller 18 to control the stepper motor to perform a correction operation to ensure that the measuring trolley travels along the specified path, so that the entire measuring trolley has the characteristic of independently detecting its current posture in motion, ensuring To ensure that the measuring trolley runs smoothly and directional and to ensure measurement accuracy, the model of the integrated circuit mainboard 16 is an AT24C04 integrated circuit board, which is used to store the data sent by the single-chip controller 18. The model of the single-chip controller 18 is a 90C52 single-chip microcomputer, which is used to perform mathematical operations on the angle value sent by the first inclination sensor 13 and send the result of the operation to the storage chip in the integrated circuit mainboard 16 for storage. A display screen 7 is installed at one end of the top of the top cover 5, and the model of the display screen 7 is an LCD1602 liquid crystal display. The display screen 7 is electrically connected to the single-chip controller 18. The display screen 7 is used to display the displacement value and flatness of each measuring point. A battery 15 is installed on one side of the top of the mounting plate 14, and the battery 15 is a lithium battery. The battery 15 is electrically connected to the display screen 7, the driver 9, the first inclination sensor 13, the single-chip controller 18, and the second inclination sensor 25. The above-mentioned trolley body 1, the magnet 2, the rear wheel 3, the lifting assembly 4, the top cover 5, the display screen 7, the directional front wheel 8, the driver 9, the first inclination sensor 13, the integrated circuit main board 16, the single-chip controller 18, and the second inclination sensor 25 are used to form an entire intelligent flatness measuring trolley for the gate slot. Under the instruction of the single-chip controller 18, the measuring trolley is controlled to move intermittently with a cycle of advancing one wheelbase and pausing for 5 seconds. The measuring trolley is used to replace manual flatness detection operations, and there is no need for personnel to perform high-altitude operations, thereby avoiding the risk of casualties among measuring personnel.This also avoids interference from external conditions and the problem of human visual deviation. When the measuring carriage is in periodic intermittent motion, the pulley 23 and the feeler rod 20 will move on the uneven measured surface, synchronously driving the first inclination sensor 13 to deflect. At this time, the offset corresponding to each pause point is recorded, and the flatness of the door slot installation can be calculated through mathematical calculations, forming a multi-point measurement effect, more accurate data, and more intelligent.

[0043] In the present invention, Figure 1 and Figure 2 As shown, a handle groove 24 is provided on the other side of the top of the top cover 5, and a handle frame 6 is rotated on the inner wall of the handle groove 24, and a grip groove is provided at the middle position of the bottom of the handle frame 6. By using the above-mentioned handle frame 6, the handle frame 6 can be hidden in the handle groove 24 during work, and the entire measuring cart can be conveniently carried by the handle frame 6 when not in use.

[0044] In the present invention, Figure 7 and Figure 8 As shown, a guide block 411 is fixed at one end of the lifting plate 410, and guide grooves 407 for inserting the guide blocks 411 are provided on the inner walls of both sides of the trolley body 1. The guiding effect of the above-mentioned guide blocks 411 and guide grooves 407 enables the lifting plate 410 to perform directional lifting and lowering movements on the threaded column 404, thereby ensuring the movement stability of the magnet 2, making the magnetic attraction on both sides of the measuring trolley stable, and ensuring the smooth operation of the measuring trolley.

[0045] A measurement method for gate slot installation, referring to Figure 10 , applied to a measuring device for gate slot installation, comprising the following steps:

[0046] Step 1: Place the trolley on the surface to be measured, use the lifting assembly 4 in conjunction with the adsorption and adhesion assembly to adjust the gap between the magnet 2 and the surface to be measured, control the suction force of the magnet 2 to ensure that the rear wheel 3, the directional front wheel 8, and the pulley 23 are in close contact with the surface to be measured, and control the trolley to automatically crawl in the direction perpendicular to the surface to be measured by the single-chip controller 18;

[0047] Step 2: The second inclination sensor 25 cooperates with the single chip controller 18 to control the car to travel along the specified path;

[0048] Step 3: Under the instruction of the single-chip controller 18, the trolley moves intermittently with a cycle of advancing one wheelbase and pausing for 5 seconds, and records each pause point, i.e., A0-An. The deviation of each pause point of the trolley passing through the measured surface is detected and recorded. The flatness of the door slot installation can be calculated through mathematical calculation, and the trolley displacement value and flatness of each measuring point are displayed on the display screen 7;

[0049] Step 4: In the rectangular coordinate system, set the reference point. The X-axis represents the ideal plumb plane and the displacement of the measuring trolley; the Y-axis represents the offset between the measuring trolley and the ideal plumb surface; the curve represents the contour of the measured surface of the door slot; point A0 represents the starting point of the measured surface, and point An represents the end point of the measured surface. Then, sort the verticality of n points to obtain the maximum, minimum and position of the verticality of each point on the measured surface of the door slot.

[0050] To sum up, the measurement principle of the present invention is as follows: when working, the inspector places the trolley on the surface to be measured, and uses the turntable 401 in the lifting assembly 4 to drive the main shaft 408 to rotate, and drives the two transmission belts 402 and three double pulleys 409 and two transmission rods 403 to rotate, and cooperates with the meshing action of the worm 406 and the worm wheel 405 to drive the lifting plate 410 and the magnet 2 in the adsorption and adhesion assembly to move, adjust the gap between the magnet 2 and the surface to be measured, and control the suction force of the magnet 2 to ensure that the rear wheel 3 and the directional front wheel 8 and the pulley 23 are in close contact with the measured surface of the door slot; then, the inspector controls the driver 9 and the directional front wheel 8 through the single-chip controller 18 to control the trolley to automatically crawl along the vertical direction of the measured surface. When the entire measuring trolley does not travel along the specified path, it will generate a gap with the original path. Angle, at this time, the trolley detects this angle through the second inclination sensor 25, and after detecting it, it sends a signal to the stepping motor to deflect an opposite angle, so as to ensure that the measuring trolley travels along the specified path; then, under the instruction of the single-chip controller 18, the trolley makes intermittent motion with a period of 5s pause for each wheelbase forward, and the pulley 23 and the feeler rod 20 move on the uneven measured surface, synchronously driving the first inclination sensor 13 to deflect. When the directional front wheel 8 of the trolley moves from point A0 (starting point) to point A1, the rear wheel 3 of the trolley reaches point A0 synchronously. At this time, the trolley stops moving. After a stabilization time of 5s, the angle between the trolley body 1 and the X-axis is read by the first inclination sensor 13 as α1, and the perpendicular line of the x-axis is drawn through point A1 and the intersection of the x-axis and the x-axis is B1 (as shown in FIG. Figure 10 As shown), in the right triangle △A0A1B1, when α1 is very small, the value of A0A1×Sinα1 is basically consistent with the value of α1×π×AOA1 / 180 (arc length formula), so A1B1=α1×π×AOA1 / 180=3.49α1, where the value of line segment A1B1 represents the offset (i.e. perpendicularity) of point A1 relative to point A0 (starting point) in the Y direction; similarly, when the directional front wheel 8 moves from point A1 to point A2, the rear wheel 3 of the car reaches point A1, and the angle between the car and the X-axis is α2, and a perpendicular line to the x-axis is drawn through point A2 and intersects with the x-axis at point B2, and a line parallel to the x-axis is drawn through point A1 and intersects with line segment A2B2 at point C2 (as shown Figure 10As shown), in the right triangle △A1A2C2, A2C2=3.49α2, where the value of line segment A2C2 represents the perpendicularity of point A2 relative to point A1 in the Y direction. The algebraic sum of the value of line segment A2C2 and the value of A1B1 can be obtained to obtain A2B2, and the value of line segment A2B2 represents the perpendicularity of point A2 relative to point A0 (starting point) in the Y direction; similarly, as the trolley continues to move, the perpendicularity of points A3, A4...An relative to point A0 (starting point) in the Y direction can be obtained, and then the perpendicularity of n points can be sorted to know the maximum value, minimum value and position of the perpendicularity of each point on the measured surface of the door slot, calculate the flatness of the door slot installation, and display the trolley displacement value and flatness of each measuring point on the display screen 7.

[0051] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A measuring device for gate slot installation, comprising a trolley body, characterized in that: Material toggling mechanism, its both ends are realize that can realize the lift and the control wheel, and the control wheel is controlled by the driving mechanism, and the control wheel is controlled by the driving mechanism. A mounting plate is installed on the inner wall of the trolley body, and sliding sleeves are installed on both ends of the top of the mounting plate, touch rods slide in the sliding sleeves, and the bottoms of the touch rods are fixed with fixed plates, and springs are installed on the tops of the fixed plates and the bottoms of the mounting plates. A bottom groove for the touch rods and springs to extend out of the bottom of the trolley body is opened, and pulleys are installed on the bottoms of the touch rods. Connecting plates are provided on the two fixing plates, and a first inclination sensor is installed on the top of the connecting plates. Mounting columns are fixed on the four corners of the top of the mounting plate, and an integrated circuit mainboard is installed on the top of the mounting column, and a single-chip microcomputer controller electrically connected to the first inclination sensor is installed on the integrated circuit mainboard; A mounting groove is provided at a middle position of one end of the trolley body close to the directional front wheel, and a second inclination sensor is installed on the inner wall of the mounting groove. The driver is composed of a stepper motor and a gear assembly, and the stepper motor and the second inclination sensor are electrically connected to the single-chip controller. The second inclination sensor is used to receive a signal indicating that the trolley body deviates from a specified path when traveling, and transmit the deviation signal to the single-chip controller to control the stepper motor to perform a deviation correction operation; The measuring method using the measuring device comprises the following steps: Step 1: Place the car on the surface to be measured, use the lifting assembly and the adsorption and adhesion assembly to adjust the gap between the magnet and the surface to be measured, control the suction force of the magnet to ensure that the rear wheel and the directional front wheel and the pulley are in close contact with the surface to be measured, and use the single-chip controller to control the car to automatically crawl in the direction perpendicular to the surface to be measured; Step 2: Use the second inclination sensor and the single-chip controller to control the car to travel along the specified path; Step 3: Under the instruction of the single-chip microcomputer controller, the trolley moves intermittently with a cycle of advancing one wheelbase and pausing for 5 seconds, and records each pause point, i.e. A0-An. The deviation of each pause point of the measured surface is detected and recorded. The flatness of the door slot installation can be calculated through mathematical calculation, and the trolley displacement value and flatness of each measuring point are displayed on the display screen. Step 4: In the rectangular coordinate system, set the reference point. The X-axis represents the ideal plumb plane and the displacement of the measuring trolley; the Y-axis represents the offset between the measuring trolley and the ideal plumb surface; the curve represents the contour of the measured surface of the door slot; point A0 represents the starting point of the measured surface, and point An represents the end point of the measured surface. Then, sort the verticality of n points to obtain the maximum, minimum and position of the verticality of each point on the measured surface of the door slot.

2. A measuring device for gate slot installation according to claim 1, characterized in that: The integrated circuit mainboard is used to store data sent by the single-chip microcomputer controller, and the single-chip microcomputer controller is used to perform mathematical operations on the angle values ​​sent by the first tilt sensor and send the results of the operations to the storage chip in the integrated circuit mainboard for storage.

3. A measuring device for gate slot installation according to claim 2, characterized in that: A top cover is installed on the top of the vehicle body, and a display screen is installed at one end of the top of the top cover, and the display screen is electrically connected to the single-chip controller.

4. A measuring device for gate slot installation according to claim 3, characterized in that: A battery is installed on one side of the top of the installation plate, and the battery is electrically connected to the display screen, the driver, the first inclination sensor, the single chip controller and the second inclination sensor.

5. A measuring device for gate slot installation according to claim 4, characterized in that: A handle groove is provided on the other side of the top of the top cover, and a handle frame is rotated on the inner wall of the handle groove, and a grip groove is provided at the middle position of the bottom of the handle frame.

6. A measuring device for gate slot installation according to claim 5, characterized in that: A guide block is fixed on one end of the lifting plate, and guide grooves for inserting the guide blocks are provided on the inner walls on both sides of the trolley body.

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