Device for measuring levelness of long object and use method thereof

Abstract

The invention discloses a device for measuring the levelness of a long object and a use method of the device. The device comprises a trolley and a measuring device, the trolley comprises a trolley frame, and trolley front wheels and trolley rear wheels are arranged at the bottom of the trolley frame. The measuring device comprises a semicircular transparent sealing cover, a power supply, a sensitive galvanometer, a processor, a first rotation angle sensor and a second rotation angle sensor, the semicircular transparent sealing cover is arranged on a frame of the trolley, the first rotation angle sensor and the second rotation angle sensor are arranged on front wheels and rear wheels of the trolley and connected with the processor, the semicircular transparent sealing cover is filled with insulating liquid, and a semicircular sliding resistor is arranged on the inner side; a swingable metal floating needle is rotatably arranged at the center of the circle, a slip ring in contact with the semicircular sliding resistor is arranged on the front side of the swingable metal floating needle, an air floating ball is arranged at the front end of the swingable metal floating needle, one end of the semicircular sliding resistor, the end part of the swingable metal floating needle, the sensitive galvanometer and the power supply form a loop, and the sensitive galvanometer is connected to the processor. The method can rapidly measure the levelness of a long object, reduces the investment of manpower and material resources, improves the working efficiency, and reduces the equipment maintenance cost.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring instruments and equipment, and in particular relates to a device for measuring the levelness of a long object and a use method thereof. Background Art

[0002] At present, there are a large number of large objects on the hot rolling production lines of many steel companies, such as driving tracks, large instrument tracks, medium and thick plates, rough rolled plates, object placement platforms, and steel push platforms, etc. These are long objects with high level requirements, and their level needs to be measured from time to time for various reasons. For these large objects, there are limited ways to measure the level. The conventional practices are as follows: one is that workers use a level ruler to place it in different positions to check the level, and a general conclusion can be drawn; the other is to use an instrument to measure the elevation, which requires the cooperation of several people and a reliable conclusion through detailed measurement, but it is time-consuming and laborious; there is also the current laser measurement method, but it is limited by the site and space, and it cannot be used anytime and anywhere, and the cost is high. These methods have their own shortcomings, and there is an urgent need for a method and device that can simply and effectively measure the level of the surface of an object.

[0003] After searching, CN102809369A discloses a level detection device, which includes a transparent rectangular base, a sealed water storage chamber is arranged in the base, water is stored in the water storage chamber, and sealed left and right scale chambers are respectively arranged on both sides of the water storage chamber. The left and right scale chambers are cavities and scales are arranged on the surface. The upper parts of the left and right scale chambers are connected by an upper connecting pipe, and the lower parts are connected to the water storage chambers by a lower connecting pipe. The level detection device can obtain the tangent function of the inclination angle of the detection surface by using the water level difference in the left and right scale chambers and the distance between the two left and right scale chambers, so as to calculate the inclination angle. However, when this level detection device is used for the level of a longer object, it still needs to be manually placed in various positions, and it needs to be manually observed, recorded and calculated for the changes in the scale value, which is also time-consuming and laborious, and can only draw a general conclusion. Summary of the invention

[0004] In view of the technical problems existing in the background technology that the surface level measurement of long objects is inconvenient, the measurement results are vague, time-consuming, labor-intensive, and expensive, the present invention provides a device for measuring the level of long objects and a method for using the device, which can not only achieve the purpose of quickly measuring the level of long objects, but also reduce the consumption of manpower and time, effectively improve work efficiency, and significantly reduce equipment maintenance costs.

[0005] The technical solution of the present invention to solve the technical problem is as follows:

[0006] The present invention provides a device for measuring the horizontality of a long object, comprising:

[0007] A trolley, the trolley comprising a trolley frame, with front wheels and rear wheels of the trolley respectively arranged on the front and rear sides of the bottom of the trolley frame; and a measuring device, the measuring device comprising a semicircular transparent sealing cover arranged on the trolley frame, a power supply, a sensitive ammeter, a processor, and a first rotation angle sensor and a second rotation angle sensor respectively arranged on the front wheel and the rear wheel of the trolley and connected to the processor, the semicircular transparent sealing cover is filled with insulating liquid, a semicircular sliding resistor is arranged on the inner side thereof, a swingable metal floating needle is rotatably arranged at the center of the circle, a slip ring contacting the semicircular sliding resistor is arranged on the front side of the swingable metal floating needle, and an air float is arranged at the front end thereof, one end of the semicircular sliding resistor, the end of the swingable metal floating needle, the sensitive ammeter and the positive and negative electrodes of the power supply form a loop, and the sensitive ammeter is connected to the processor through a line.

[0008] Furthermore, the semicircular transparent sealing cover is in a flat semicircular shape.

[0009] Furthermore, the semicircular transparent sealing cover is made of glass.

[0010] Furthermore, the power source is a rechargeable battery or a non-rechargeable battery.

[0011] Furthermore, the front wheels and rear wheels of the trolley are made of stainless steel.

[0012] Furthermore, the processor is connected to a display.

[0013] The method for using the device for measuring the horizontality of a long object described in the above technical solution comprises:

[0014] Place the device on the surface of the long object, turn on the power, and push the trolley to move from the starting position to the end position;

[0015] The current value of the vehicle during its movement is acquired in real time by means of a sensitive ammeter, and the data is transmitted to the processor;

[0016] The sensor data of the front wheel and the rear wheel of the vehicle are respectively and synchronously acquired in real time by the first rotation angle sensor and the second rotation angle sensor, and the data are transmitted to the processor;

[0017] The processor converts the acquired real-time current value of the sensitive ammeter into the real-time resistance value of the semicircular sliding resistor, and obtains the offset angle of the swingable metal floating needle relative to the vertical direction according to the resistance value;

[0018] The moving distance of the trolley is calculated by the processor according to the sensor data of the front wheels and the rear wheels of the trolley acquired in real time;

[0019] According to the real-time offset angle of the swingable metal floating needle relative to the vertical direction and the real-time moving distance of the trolley calculated by the processor, the horizontality information of the surface of the long object is obtained.

[0020] Furthermore, the processor corresponds the offset angle of the swingable metal floating needle relative to the vertical direction calculated in real time to the real-time moving distance of the trolley and displays them in the form of a graph.

[0021] Compared with the prior art, the device for measuring the horizontality of a long object and the method for using the device described in the present invention have the following beneficial effects:

[0022] (1) The device for measuring the horizontality of a long object of the present invention has a simple and novel structure, is easy to manufacture and use, and each component is made of common materials or parts, has low cost and good application effect.

[0023] (2) The device for measuring the horizontality of a long object of the present invention is combined with the method for use thereof. A single person can push the device from the starting position to the end position to complete the measurement task, making the horizontality measurement of a long object simple and practical.

[0024] (3) The device for measuring the horizontality of a long object and the method for using the device described in the present invention are ingeniously conceived. When used for measuring the horizontality of a long object, the device utilizes the position where the horizontality problem occurs to cause the swingable metal floating needle to rotate, so that the slip ring on it changes the contact position with the semicircular sliding resistor, thereby changing the resistance value. The current value is obtained through a sensitive ammeter and sent to a processor for processing. The processor can calculate the real-time offset angle of the swingable metal floating needle relative to the vertical direction based on the current value, and obtain the horizontality information of the position. At the same time, the real-time sensing data of the first rotation angle sensor and the second rotation angle sensor are used to calculate the position of the trolley corresponding to the horizontality information of each position, so as to obtain the horizontality information of the entire long object surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a hot rolling flatness meter laser quick replacement auxiliary device in use according to the present invention;

[0026] Figure 2 It is a horizontal curve graph of the surface of a longer object;

[0027] In the figure: 1. trolley frame; 2. semicircular transparent sealing device; 3. air float; 4. semicircular sliding resistor; 5. slip ring; 6. swingable metal floating needle; 7. power supply; 81. trolley front wheel; 82. trolley rear wheel; 9. first rotation angle sensor; 10. second rotation angle sensor; 11. sensitive ammeter; 12. processor; 13. display. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The terms "upper", "lower", "left", "right", "front", "back", etc. used in the patent application specification and claims of the present disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly; "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Anything not described in detail in the present invention is a known technology to those skilled in the art.

[0030] Embodiment 1:

[0031] like Figure 1 As shown, a device for measuring the horizontality of a long object comprises a trolley and a measuring device.

[0032] The trolley is a carrier of all parts of the whole device, which includes a trolley frame 1. The front and rear sides of the bottom of the trolley frame 1 are respectively provided with a trolley front wheel 81 and a trolley rear wheel 82. The trolley frame 1 and the front and rear wheels 81 and 82 at the bottom of the trolley can be used to push the trolley to move on the surface of a long object to measure the horizontality of the surface of the long object. The front and rear wheels 81 and 82 can be made of stainless steel or other hard metals to ensure that there is no elastic deformation during movement to affect the horizontality measurement. The two wheels are the same size, and the radius length is set to L. The physical length of the wheel traveling one circle can be obtained through the mathematical formula (circumference = 2πL).

[0033] The measuring device includes a semicircular transparent sealing cover 2 arranged on the trolley frame 1, a power supply 7, a sensitive ammeter 11, a processor 12, and a first rotation angle sensor 9 and a second rotation angle sensor 10 respectively arranged at the central axis of the front wheel 81 and the rear wheel 82 of the trolley and connected to the processor 12. The processor 12 is used to obtain the real-time current value of the sensitive ammeter 11 and the real-time rotation angle data of the first rotation angle sensor 9 and the second rotation angle sensor 10 and perform calculation processing; the semicircular transparent sealing cover 2 can be made of glass or plastic material, preferably a flat semicircular shape, with a certain thickness, which is convenient for setting other components, and the center line of the front wheel 81 and the rear wheel 82 of the trolley must be parallel to the plane of the semicircular transparent sealing cover 2 to ensure that the trolley and the wheel are integrated and the initial angle is horizontal; the power supply 7 can be a rechargeable battery or a non-rechargeable battery, such as a 5V dry battery; the sensitive ammeter 11 uses a component used in the laboratory to check weak current or tiny voltage in a DC circuit. It is a highly sensitive magnetoelectric instrument that can measure 10^ -7 ~10^ -12A small current; the first rotation angle sensor 9 and the second rotation angle sensor 10 are used to obtain the rotation angle data of the front wheel 81 and the rear wheel 82 of the trolley respectively, and send them to the processor 12 for calculation and processing. The semicircular transparent sealing cover 2 is filled with a light insulating liquid with a density close to that of water; a semicircular sliding resistor 4 is arranged on the inner side of the semicircular transparent sealing cover 2, which is fixed in its middle position and the resistance value can be set to R; a swingable metal floating needle 6 is rotatably arranged at the center of the semicircular transparent sealing cover 2, and a slip ring 5 in contact with the semicircular sliding resistor 4 is arranged on the front side of the swingable metal floating needle 6, and an air float 3 is arranged at its front end. One end of the semicircular sliding resistor 4, the end of the swingable metal floating needle 6, the positive and negative electrodes of the sensitive ammeter 11 and the power supply 7 form a circuit, and the sensitive ammeter 11 is connected to the processor 12 through the line. The swingable metal floating needle 6, the air float 3 and the slip ring 5 can be designed as an integrated whole. The air float 3 is always perpendicular to the horizontal plane and points in a certain direction under the action of buoyancy. Under the action of buoyancy, when the level changes, the air float 3 drives the swingable metal floating needle 6 to change accordingly, and then drives the slip ring 5 to slide left or right on the semicircular sliding resistor 4. Different resistance contact points form different resistance sizes in the circuit loop, and different resistance sizes form different current sizes under a fixed power supply 7 voltage. The sensitive ammeter 11 obtains the current size in the circuit in real time and transmits it to the processor 12 for processing in real time. When the processor 12 performs level processing, the current value signal and the wheel angle rotation signal in the circuit loop are collected at the same sampling frequency. The change in resistance value can be calculated through the current signal. The resistance value of the entire semicircular sliding resistor 4 is R. The semicircular design is divided into 180°, and the resistance value of each degree is R / 180. When the resistance value is R / 2, it means that the air float 3 is in the middle position and the level is 0. The current value at this position is: voltage (such as 5V) / resistance (R / 2). The processor 12 calculates that this current value represents the horizontal position. The swingable metal floating needle 6 is deflected to the left and right based on the same calculation principle. If the floating needle deviates 1° to the left, it means that the right wheel is low and the left wheel is high. At this time, the resistance value is 91R / 180, and the circuit current value obtained is: voltage (such as 5V) / resistance (91R / 180), the processor calculates that the floating needle is offset to the left by 1°, that is, the surface level of the object is 1° lower; after obtaining the horizontal angle of the object, the corresponding position information is also required, and the rotation angle sensor signal of the wheel needs to be calculated. The processor 12 synchronously collects the sensor signals of the first rotation angle sensor 9 and the second rotation angle sensor 10. The signal collection is effective only when the two wheels move together. Through the collected angle signal, corresponding to the circumference of the wheel, the distance moved by the wheel can be obtained in the processor. After obtaining the distance and the horizontality of the object at this distance, the horizontal angle coordinate curve of the longer object surface can be drawn, thereby completing the measurement operation.

[0034] In order to display the horizontality information of the surface of a long object, the processor 12 may also be connected to a display 13 for displaying the acquired current information, rotation angle information, and the horizontal angle coordinate curve of the surface of the long object.

[0035] Example 2

[0036] like Figure 1 and Figure 2 As shown, a method for using a device for measuring the horizontality of a long object in Example 1 includes:

[0037] Place the device on the surface of a long object, turn on the power supply 7, and push the trolley to move from the starting position to the end position;

[0038] The current value of the vehicle during its movement is acquired in real time by a sensitive ammeter 11, and the data is transmitted to a processor 12;

[0039] The sensing data of the front wheel 81 and the rear wheel 82 of the vehicle are respectively and synchronously acquired in real time by the first rotation angle sensor 9 and the second rotation angle sensor 10, and the data are transmitted to the processor 12;

[0040] The processor 12 converts the real-time current value of the sensitive ammeter 11 into the real-time resistance value of the semicircular sliding resistor 4, and obtains the offset angle of the swingable metal floating needle 6 relative to the vertical direction according to the resistance value;

[0041] The processor 12 calculates the moving distance of the trolley according to the sensor data of the front wheel 81 and the rear wheel 82 of the trolley acquired in real time;

[0042] According to the real-time offset angle of the swingable metal floating needle 6 relative to the vertical direction and the real-time moving distance of the trolley calculated by the processor 12, the horizontality information of the surface of the long object is obtained.

[0043] In this embodiment, the processor 12 can correspond the real-time calculated offset angle of the swingable metal floating needle 6 relative to the vertical direction and the real-time moving distance of the trolley to form a horizontal curve graph, and display it on the display in the form of a chart. Figure 2 As shown, it can be seen intuitively that the car has moved a distance of about 10 meters. At this distance, the levelness of the object surface is slightly uneven. This levelness curve is intuitive and clear, which can facilitate the measurement work.

Claims

1. A device for measuring the levelness of a long object, characterized in that: include: A trolley, the trolley comprising a trolley frame (1), the front and rear sides of the bottom of the trolley frame (1) being respectively provided with a trolley front wheel (81) and a trolley rear wheel (82); and A measuring device, comprising a semicircular transparent sealing cover (2) arranged on a trolley frame (1), a power supply (7), a sensitive ammeter (11), a processor (12), and a first rotation angle sensor (9) and a second rotation angle sensor (10) respectively arranged on the front wheel (81) and the rear wheel (82) of the trolley and connected to the processor (12); the semicircular transparent sealing cover (2) is filled with insulating liquid, a semicircular sliding resistor (4) is arranged on the inner side thereof, a swingable metal floating needle (6) is rotatably arranged at the center of the circle, a slip ring (5) in contact with the semicircular sliding resistor (4) is arranged on the front side of the swingable metal floating needle (6), and an air float (3) is arranged at the front end thereof; one end of the semicircular sliding resistor (4), the end of the swingable metal floating needle (6), the sensitive ammeter (11) and the positive and negative electrodes of the power supply (7) form a circuit, and the sensitive ammeter (11) is connected to the processor (12) through a line.

2. A device for measuring the horizontality of a long object according to claim 1, characterized in that: The semicircular transparent sealing cover (2) is in a flat semicircular shape.

3. A device for measuring the horizontality of a long object according to claim 1 or 2, characterized in that: The semicircular transparent sealing cover (2) is made of glass.

4. The device for measuring the horizontality of a long object according to claim 1, characterized in that: The power source (7) is a rechargeable battery or a non-rechargeable battery.

5. The device for measuring the horizontality of a long object according to claim 1, characterized in that: The front wheel (81) and the rear wheel (82) of the trolley are made of stainless steel.

6. The device for measuring the horizontality of a long object according to claim 1, characterized in that: The processor (12) is connected to a display (13).

7. A method for using a device for measuring the horizontality of a long object according to any one of claims 1 to 6, characterized in that: include: The device is placed on the surface of the long object, and a power source (7) is turned on to push the trolley to move from the starting position to the end position; The current value of the trolley during its movement is acquired in real time through a sensitive ammeter (11), and the data is transmitted to the processor (12); The sensor data of the front wheel (81) and the rear wheel (82) of the trolley are respectively and synchronously acquired in real time by the first rotation angle sensor (9) and the second rotation angle sensor (10), and the data are transmitted to the processor (12); The processor (12) converts the real-time current value of the sensitive ammeter (11) into the real-time resistance value of the semicircular sliding resistor (4), and obtains the offset angle of the swingable metal floating needle (6) relative to the vertical direction according to the resistance value; The moving distance of the trolley is calculated by a processor (12) based on sensor data of the front wheels (81) and the rear wheels (82) of the trolley acquired in real time; According to the real-time offset angle of the swingable metal floating needle (6) relative to the vertical direction and the real-time moving distance of the trolley calculated by the processor (12), the horizontality information of the surface of the long object is obtained.

8. The method for using the device for measuring the horizontality of a long object according to claim 7, characterized in that: The processor (12) corresponds the offset angle of the swingable metal floating needle (6) relative to the vertical direction calculated in real time to the real-time moving distance of the trolley and displays them in the form of a graph.

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