A wireless handheld roll gap gauge

Abstract

The utility model provides a kind of wireless handheld roll gap gauge, it is related to roll gap gauge technical field, including pedestal, counter roller and instrument box, the bottom of pedestal is equipped with lower wheel type probe, the surface of pedestal is equipped with outer cover, the inside of outer cover is equipped with first battery, the inside of outer cover is equipped with PCB board, the surface of pedestal is equipped with lower seat sleeve tube, wireless signal transmission and split type handheld measurement structure are combined, the wireless data transmission between measurement end and display end is realized, in the measurement process, lower wheel type probe and the surface of measured counter roller are contacted respectively, lower magnetic sensor detects the gap change between two rollers in real time and signal is transmitted to PCB board, after preliminary processing, it is sent to the mainboard in instrument box by antenna wirelessly, after mainboard receives signal, roll gap value is automatically calculated, and it is shown on touch screen, while it can be output measurement result by built-in printer, avoids artificial plug ruler reading error, avoids traditional wired instrument in field wiring complex, signal interference is serious and the problem such as inconvenient to use.

Description

Technical Field

[0001] This utility model relates to the field of roller seam measuring instruments, and in particular to a wireless handheld roller seam measuring instrument. Background Technology

[0002] According to Chinese Patent Publication No. CN203349810U, a handheld roll gap gauge includes a roll gap gauge, a spiral cable, and a handheld measuring instrument. The roll gap gauge is connected to the handheld measuring instrument via the spiral cable. This invention employs a separate design where the handheld measuring instrument and the roll gap gauge are connected by a spiral cable. The operator can remotely operate the roll gap gauge. This separate design is not only convenient to use but also facilitates remote control, making it suitable for continuous casting plants.

[0003] The above-mentioned documents and existing technologies have the following technical problems: Currently, most handheld roll gap measuring instruments rely on mechanical feeler gauges or wired measuring instruments. The operation is affected by human factors, making it difficult to ensure measurement consistency and repeatability. Furthermore, wired structures are easily interfered with in complex high-temperature environments such as continuous casting machines, making wiring difficult and maintenance inconvenient. Data cannot be transmitted and saved in real time, resulting in time-consuming and unreliable roll gap debugging and equipment calibration processes. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wireless handheld roller sewing machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wireless handheld roller sewing machine, comprising a base, rollers, and an instrument box. The bottom surface of the base is provided with a lower wheel-type probe, the surface of the base is provided with an outer cover, the inside of the outer cover is provided with a first battery, the inside of the outer cover is provided with a PCB board, the surface of the base is provided with a lower base sleeve, the surface of the lower base sleeve is provided with an outer sleeve, the inside of the lower base sleeve is provided with a sensor base, the inside of the sensor base is provided with a lower magnetic sensor, the end of the sensor base is provided with a magnetic rod sleeve, the inside of the magnetic rod sleeve is provided with a magnetic rod extension rod, the end of the magnetic rod sleeve is provided with an upper probe, and the end of the upper probe is provided with an upper wheel-type probe.

[0006] Preferably, the instrument box contains a motherboard and a second battery.

[0007] Preferably, the instrument box has a printer inside and a touch screen on its surface.

[0008] Preferably, the end of the outer sleeve is provided with a knurled sleeve, and the end of the knurled sleeve is provided with an extension sleeve.

[0009] Preferably, the bottom surface of the base is provided with a lower arc seat, and the end of the extension sleeve is provided with an upper arc seat.

[0010] Preferably, the two rollers are respectively connected to the surfaces of the lower arc seat and the upper arc seat, and an antenna is provided on the side of the outer cover.

[0011] Preferably, the outer sleeve is provided with positioning screws on its surface, and the lower sleeve and the outer sleeve are fixedly connected by the positioning screws.

[0012] Beneficial effects This invention combines wireless signal transmission with a split-type handheld measurement structure. A motherboard, touchscreen, printer, and second battery are housed within the instrument box, while a PCB board, first battery, lower magnetic sensor assembly, antenna, and dual-wheel probes are located within the measurement base. This enables wireless data transmission between the measurement and display ends. During measurement, the upper and lower wheel probes contact the surfaces of the rollers being measured. The lower magnetic sensor detects changes in the gap between the two rollers in real time and transmits the signal to the PCB board. After preliminary processing, the signal is wirelessly transmitted to the motherboard in the instrument box via the antenna. Upon receiving the signal, the motherboard automatically calculates the roller gap value and displays it on the touchscreen. Simultaneously, the measurement results can be output via the built-in printer. This avoids errors from manual feeler gauge readings and eliminates the problems of complex wiring, severe signal interference, and inconvenience associated with traditional wired instruments. The system allows for independent operation in high-temperature, dusty, or confined spaces. Operators only need to hold the instrument box to perform remote monitoring and data recording. The entire system achieves real-time and stable signal transmission through wireless measurement, ensuring measurement accuracy while improving operational flexibility and safety. Attached Figure Description

[0013] Figure 1 This is an isometric view of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the outer sleeve and the rollers of this utility model; Figure 4 This is a diagram showing the internal structure of the outer sleeve of this utility model; Figure 5 This is a structural diagram of the instrument box of this utility model.

[0014] Legend: 1. Base; 2. Rollers; 3. Instrument box; 4. Lower seat sleeve; 5. Outer sleeve; 6. Lower arc seat; 7. Upper arc seat; 8. Knurled sleeve; 9. Positioning screw; 10. Magnetic rod sleeve; 11. Magnetic rod extension rod; 12. Outer cover; 13. First battery; 14. Sensor base; 15. Lower magnetic sensor; 16. Main board; 17. Second battery; 18. Printer; 19. Upper probe; 20. Extension sleeve; 21. Upper wheel-type probe; 22. PCB board; 23. Antenna; 24. Touch screen; 25. Lower wheel-type probe. Detailed Implementation

[0015] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1: Reference Figure 1-5A wireless handheld roll gap measuring instrument includes a base 1, a pair of rolls 2, and an instrument box 3. The base 1, as the core support structure of the instrument, provides a stable base for mounting and securing other components. It ensures the measuring device remains balanced and precisely aligned during operation, preventing measurement errors caused by vibration or offset. As part of the overall frame, it supports the sensor and probe assembly for roll gap measurement in high-temperature or dusty environments. The pair of rolls 2 represent the rolls being measured and are typically installed in the conveyor mechanism of a continuous casting machine to simulate or actually contact the object being measured. The surfaces of the lower arc seat 6 and the upper arc seat 7 are connected to form a measurement path, allowing the upper wheel probe 21 and the lower wheel probe 25 to contact the roll surface, detect changes in the roll gap, calculate the absolute distance, and evaluate the roll gap accuracy to ensure the quality of the cast billet. The instrument box 3 is the display and control unit of the wireless handheld roll gap meter, housing the main board 16, the second battery 17, and the printer 18. A touchscreen 24 is provided on the surface, enabling remote data reception, processing, and output. This allows operators to monitor the roll gap by hand without direct contact with the measurement site, thus improving operational safety and convenience. The instrument box 3 contains a mainboard 16, a second battery 17, and a printer 18. A touchscreen 24 is located on the surface of the instrument box 3. The mainboard 16, installed inside the instrument box 3, serves as the central processing unit, receiving wireless signals from the antenna 23, calculating the roll gap value, and displaying the results on the touchscreen 24. It supports data storage, verification, and printing functions, ensuring human-machine interaction and accurate output. The second battery 17, located inside the instrument box 3, powers components such as the mainboard 16, touchscreen 24, and printer 18, supporting portable handheld operation and ensuring the display end can be used for extended periods after charging, without being limited by the measurement end. The printer 18, built into the instrument box 3, outputs measurement results, such as the roll gap value. It receives data from the mainboard 16, enabling instant printing, avoiding manual recording errors, and improving the efficiency of on-site data recording. The touchscreen 24, located on the surface of the instrument box 3, serves as the human-machine interface, displaying real-time values, roll gap values, battery level, and operation menus. It supports touch operations, such as connecting the measuring body, verification, and printing, providing a user-friendly interface for easy on-site adjustments and data viewing.

[0018] A lower wheel-type probe 25 is installed on the bottom surface of the base 1. The lower wheel-type probe 25 is fixed to the bottom surface of the base 1 and acts as a lower wheel-type contact sensor, contacting the surface of the measured roller 2. It collects real-time data from the inner arc side to ensure smooth rolling and works in conjunction with the upper wheel-type probe 21 to achieve high-precision roller gap measurement and error calculation. An outer cover 12 is installed on the surface of the base 1. A first battery 13 and a PCB board 22 are housed inside the outer cover 12. An antenna 23 is located on the side of the outer cover 12. The outer cover 12 covers the surface of the base 1 and houses the first battery 13 and the PCB board 22, providing external protection against dust, high temperatures, and mechanical damage. The antenna 23 on its side supports wireless signal transmission. To ensure reliable operation of the measurement components in harsh environments, the first battery 13, located inside the outer casing 12, powers the measurement components such as the PCB board 22, the lower magnetic sensor 15, and the antenna 23. It supports low-power design, ensuring long-term independent operation of the device in wireless mode without external power connection. The PCB board 22, also located inside the outer casing 12, serves as the electronic control board for the measurement end, initially processing the signal from the lower magnetic sensor 15. It wirelessly transmits data to the main board 16 via the antenna 23, supporting low-power operation and ensuring signal stability and anti-interference capabilities. The antenna 23, mounted on the side of the outer casing 12, acts as a wireless communication component, enabling data transmission between the measurement end and the instrument box 3. It supports real-time signal transmission, avoiding the complexity and interference of wired connections, and ensuring flexible use of the system in high-temperature or confined spaces. The base 1 has a lower sleeve 4 on its surface, and an outer sleeve 5 on its surface. The outer sleeve 5 has a positioning screw 9 on its surface. The lower sleeve 4 and outer sleeve 5 are fixedly connected by the positioning screw 9. The lower sleeve 4 is mounted on the surface of the base 1, serving as an external protective tube for the sensor assembly, providing structural support and a fixing point. It internally houses the sensor base 14 and is connected to the outer sleeve 5 via the positioning screw 9, ensuring the stability and adjustability of the sensor assembly and preventing external interference from affecting measurement accuracy. The outer sleeve 5 is located on the surface of the lower sleeve 4, serving as an extended protection. The structure is fixedly connected by positioning screws 9, providing continuity of the overall tubular frame and ensuring smooth linear movement of the magnetic rod assembly, thereby maintaining the accuracy and repeatability of the roll gap measurement. Positioning screws 9 are used to fix the lower seat sleeve 4 and the outer sleeve 5 after telescopic extension, ensuring a firm connection between the two and preventing the assembly from loosening or shifting during measurement, thereby maintaining the integrity of the overall structure and measurement accuracy. The end of the outer sleeve 5 is provided with a knurled sleeve 8, which is installed at the end of the outer sleeve 5 as an adjustable surface texture tube, providing manual grip and fine adjustment functions. It is connected to the extension sleeve 20, which makes it easy for the operator to adjust the probe position and ensure that the measuring assembly maintains smooth linear movement when passing through the fan-shaped section.

[0019] The lower sleeve 4 houses a sensor base 14, which in turn houses a lower magnetic sensor 15. The sensor base 14, installed inside the lower sleeve 4, serves as a fixed platform for the lower magnetic sensor 15, providing stable support and ensuring precise alignment between the sensor and the magnetic rod assembly. It is used to collect roll gap data and transmit it to the PCB board 22 for preliminary processing. The lower magnetic sensor 15, located inside the sensor base 14, acts as a core detection element, monitoring the magnetic rod displacement in real time to calculate the roll gap. It works in conjunction with the upper assembly to form a paired measurement system, providing high-resolution data for comparison with theoretical values ​​and displaying errors. A magnetic rod sleeve 10 is located at the end of the sensor base 14. The magnetic rod sleeve 10 contains a magnetic rod extension rod 11 located at the end of the sensor base 14. As an external protection and guiding structure for the magnetic rod extension rod 11, the magnetic rod sleeve 10 ensures smooth extension and retraction of the magnetic rod assembly, supports the installation of the upper probe 19, and maintains the linear response of the lower magnetic sensor 15 for accurate detection of roll gap changes. The magnetic rod extension rod 11 is installed inside the magnetic rod sleeve 10 as a retractable connecting component. Its bottom end connects with the upper magnetic rod, extending the effective range of the lower magnetic sensor 15. It transmits mechanical displacement to the lower magnetic sensor 15, enabling real-time monitoring of the roll gap and ensuring the measurement range covers specified specifications. The upper probe 19 is located at the end of the magnetic rod sleeve 10. The upper probe 19 has an upper wheel-type probe 21 at its end, and the knurled sleeve 8 has an extension sleeve 20 at its end. The upper probe 19 is located at the end of the magnetic rod sleeve 10 and serves as an upper contact component, connecting to the upper wheel-type probe 21. It transmits mechanical force to the magnetic rod system, ensuring the acquisition of roll gap data on the outer arc side and supporting zero-point calibration in a naturally extended state. The extension sleeve 20 is installed at the end of the knurled sleeve 8 and serves as a structural extension, connecting to the upper arc seat 7. The upper wheel-type probe 21 is fixed at the end of the upper probe 19 and serves as an upper wheel-type contact sensor, contacting the surface of the tested roller 2. It acquires real-time data on the outer arc side, ensuring smooth rolling through the fan-shaped section, and works with the lower wheel-type probe 25 to calculate the minimum roll gap value. The base 1 has a lower arc seat 6 on its bottom surface and an upper arc seat 7 at the end of the extension sleeve 20. The two rollers 2 are respectively connected to the surfaces of the lower arc seat 6 and the upper arc seat 7. The lower arc seat 6 is fixed to the bottom surface of the base 1 and connected to one of the rollers 2 to form a lower arc-shaped contact surface. It simulates the arc structure of the continuous casting machine rolls to ensure that the lower wheel probe 25 makes stable contact with the surface being measured, collects data on the inner arc side, and cooperates with the upper arc seat 7 to calculate the roll gap value. The upper arc seat 7 is located at the end of the extension sleeve 20 and connected to one of the rollers 2 to form an upper arc-shaped contact surface. It supports the positioning of the upper wheel probe 21, ensures the collection of data on the outer arc side, and together with the lower arc seat 6, provides a symmetrical measurement path for determining the absolute distance between the rolls. Specific Implementation Example 2: A wireless handheld roller seam measuring instrument, based on the basic structure in Specific Embodiment 1, further discloses the following: The operation process of the wireless handheld roller seam measuring instrument is as follows: First, perform an unpacking inspection to ensure that the main unit, measuring body, cable, instruction manual, charger, and certificate of conformity are complete and that the equipment appearance is undamaged. Then, follow the safety instructions to avoid arbitrarily disassembling, twisting, or bumping the instrument, and place it in a dry environment free of corrosive gases and away from high temperatures and direct sunlight. When powering on, press the red power switch on the side of the measuring body. The instrument will automatically enter the power-on interface. Click the "Connect Measuring Body" button to establish a wireless connection. The connection indicator light will change from flashing red to solid green. After powering on, the system will enter the main interface, which displays real-time values, roll gap values, battery level, and "Measure," "Print," "Verify," and "Return" buttons. Before use, check the battery level display in the upper right corner. If it is below 50%, use the included charger connected to the side power socket and AC power to charge until fully charged. Zero-point calibration is completed at the factory, but if there is a measurement deviation, you can select the "Verify" button on the main interface. After positioning the measuring object upright and extending the probe naturally, you will enter the calibration interface. Use the up and down arrows to adjust the correction value (for rods with 210-230mm specifications, use 215 and 225 as calibration points). After saving, the system will automatically apply the changes. Before measurement begins, the operator places the instrument stably between the rolls 2 to be measured in the fan-shaped section of the continuous casting machine, ensuring that the upper wheel probe 21 and the lower wheel probe 25 are in contact with the outer and inner arc sides of the roll surfaces, respectively. The probes are tightly fitted to the rolls 2 through the arc-shaped structures of the lower arc seat 6 and the upper arc seat 7, simulating the actual roll path. After pressing the "Measure" button on the main interface, the lower magnetic sensor 15 detects the displacement change of the magnetic rod extension rod 11 in real time, capturing the data of the gap between the two rolls. The sensor signal is transmitted to the PCB board 22 inside the base 1 for preliminary processing, and then wirelessly transmitted to the main board 16 of the instrument box 3 via the antenna 23. The main board 16 processes the received signal, calculates the real-time roll gap value and the minimum roll gap value, and compares them with the theoretical target value to obtain the error value. These data are displayed in real time on the touch screen 24, where the real-time value is instantaneous. The measurement results show that the roll gap value is the minimum value among multiple measurements. After the measurement is completed, the operator can press the "Print" button on the main interface to directly output the roll gap value and error data through the built-in printer 18, avoiding errors from manual recording. The printed results are based on the calculation of the motherboard 16 and contain accurate roll gap values, which are convenient for on-site analysis and recording. The touch screen 24 simultaneously displays the real-time value, roll gap value and power status, which can be viewed and adjusted by the operator at any time. After the measurement is completed, turn off the power, store the instrument in a cool and dry place, and clean the surface regularly with a soft cloth and neutral detergent. Avoid washing with water or using solvents to maintain the accuracy and life of the equipment.

[0021] In summary: 1. A combination of wireless signal transmission and a split-type handheld measurement structure is adopted. A motherboard 16, touchscreen 24, printer 18, and second battery 17 are installed in the instrument box 3. A PCB board 22, first battery 13, lower magnetic sensor 15 assembly, antenna 23, and dual-wheel probes are installed in the measurement base 1. This enables wireless data transmission between the measurement end and the display end. During measurement, the upper wheel probe 21 and lower wheel probe 25 contact the surfaces of the rollers being measured 2, respectively. The lower magnetic sensor 15 detects the change in the gap between the two rollers in real time and transmits the signal to the PCB board 22. After preliminary processing, the signal is wirelessly transmitted via antenna 23. The signal is sent to the mainboard 16 in the instrument box 3. After receiving the signal, the mainboard 16 automatically calculates the roll gap value and displays it on the touch screen 24. At the same time, the measurement result can be output through the built-in printer 18. This avoids the error of manual feeler gauge reading and avoids the problems of complex wiring, severe signal interference and inconvenience of traditional wired instruments. It enables the measuring body to operate independently in high temperature, dust or confined space. The operator only needs to hold the instrument box 3 to complete remote monitoring and data recording. The whole system achieves real-time and stable signal transmission through wireless measurement, which not only ensures measurement accuracy, but also improves operational flexibility and safety.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wireless handheld roller sewing machine, comprising a base (1), rollers (2), and an instrument box (3), characterized in that: The base (1) has a lower wheel probe (25) on its bottom surface, an outer cover (12) on its surface, a first battery (13) inside the outer cover (12), a PCB board (22) inside the outer cover (12), a lower seat sleeve (4) on its surface, an outer sleeve (5) on its surface, a sensor base (14) inside the lower seat sleeve (4), a lower magnetic sensor (15) inside the sensor base (14), a magnetic rod sleeve (10) at the end of the sensor base (14), a magnetic rod extension rod (11) inside the magnetic rod sleeve (10), an upper probe (19) at the end of the magnetic rod sleeve (10), and an upper wheel probe (21) at the end of the upper probe (19).

2. The wireless handheld roller sewing machine according to claim 1, characterized in that: The instrument box (3) is equipped with a motherboard (16) and a second battery (17).

3. The wireless handheld roller sewing machine according to claim 1, characterized in that: The instrument box (3) has a printer (18) inside and a touch screen (24) on its surface.

4. The wireless handheld roller sewing machine according to claim 1, characterized in that: The end of the outer sleeve (5) is provided with a knurled sleeve (8), and the end of the knurled sleeve (8) is provided with an extension sleeve (20).

5. A wireless handheld roller sewing machine according to claim 4, characterized in that: The base (1) has a lower arc seat (6) on its bottom surface, and the extension sleeve (20) has an upper arc seat (7) at its end.

6. A wireless handheld roller sewing machine according to claim 5, characterized in that: The two rollers (2) are respectively connected to the surfaces of the lower arc seat (6) and the upper arc seat (7), and the outer cover (12) is provided with an antenna (23) on its side.

7. The wireless handheld roller sewing machine according to claim 1, characterized in that: The outer sleeve (5) is provided with positioning screws (9), and the lower seat sleeve (4) and the outer sleeve (5) are fixedly connected by positioning screws (9).

Images