Portable strand diameter measuring instrument and measuring method

Abstract

The application discloses a portable strand diameter measuring instrument and a measuring method. The portable strand diameter measuring instrument comprises a ruler frame, a measuring unit is fixedly connected to the back of the ruler frame, a display controller is arranged on the front of the ruler frame, and the measuring unit is in signal connection with the display controller. Only one end of a flexible ruler body is passed through a gear, and the strand diameter is automatically measured, data is processed, and a numerical value is displayed after F reaches a required value. The instrument is relatively light and simple to operate, accurate in measurement, and wide in application range.

Description

Technical Field

[0001] This invention belongs to the technical field of strand diameter measuring equipment, and relates to a portable strand diameter measuring instrument. This invention also relates to a method for measuring using the above-mentioned device. Background Technology

[0002] In various fields such as industrial production, manufacturing, and engineering hoisting, wire ropes, hemp ropes, nylon ropes, and carbon fiber ropes are indispensable accessories. In practical applications, ropes primarily function as force redirection and transfer, load-bearing, positioning, and connection. During their production and use, these accessories require sufficient measured diameter to ensure their breaking strength, compatibility with equipment, and whether diameter reduction warrants disposal. Therefore, diameter is a crucial indicator that must be considered in the design, production, use, maintenance, and disposal of stranded ropes. Measuring and evaluating the diameter using convenient tools and correct methods is of paramount importance.

[0003] Currently, duckbill vernier calipers are mainly used in production and use to measure the diameter of wire ropes, hemp core ropes, nylon ropes, and carbon fiber ropes. However, due to the elliptical diameter of the strands, inconsistent clamping forces, and poor rigidity, the diameter measured each time or by different operators varies. The accuracy and precision cannot be guaranteed, failing to meet the requirements of standardized measurement. In particular, the measurement error is even greater when using vernier calipers to measure hemp core ropes, nylon ropes, and carbon fiber ropes, which cannot accurately guide design optimization, production, use, and scrapping.

[0004] Therefore, there is an urgent need to research a simple-to-operate and accurate strand diameter measuring tool. Summary of the Invention

[0005] The purpose of this invention is to provide a portable strand diameter measuring instrument, which solves the problem of large measurement error in strand diameter in the prior art.

[0006] Another object of the present invention is to provide a method for measuring using the above-described apparatus.

[0007] The technical solution adopted in this invention includes a ruler frame, a measuring unit fixedly connected to the back of the ruler frame, and a display controller provided on the front of the ruler frame. The measuring unit and the display controller are connected by signals.

[0008] The invention is further characterized by:

[0009] The ruler frame includes a handle, which is D-shaped, and a fixing bracket is vertically fixed to the straight side of the handle.

[0010] The measuring unit includes a gear, with both ends of the gear supported by a pair of gear support frames. The gear support frames are fixed to the middle of the back of the fixed frame. A stress sensor is fixed between the ends of the two gear support frames away from the fixed frame. The axis of the gear is parallel to the straight side of the handle. The side of the stress sensor away from the handle is fixed to one end of the flexible ruler. The other end of the flexible ruler is bent toward the handle and passes through the gap between the gear and the stress sensor. It also includes a gear-type counting sensor, which is fixed to the back of the fixed frame. The axis of the gear-type counting sensor coincides with the straight line containing the radius of the gear. The distance between the sensing end of the gear-type counting sensor and the tooth tip of the gear is 2-3 mm.

[0011] The flexible ruler body includes a rack surface and a smooth surface, with the teeth on the rack surface meshing with gears.

[0012] The display controller has a display and control buttons on the front, and a data processor on the back. The data processor is connected to the stress sensor, gear-type counting sensor, and display signal.

[0013] A power supply is fixed to the back of the display controller, and the power supply is electrically connected to the display, data processor, gear-type counting sensor and stress sensor respectively.

[0014] Another technical solution adopted in this invention is the following specific measurement steps:

[0015] Step 1: Pass the strand of rope through the loop formed by bending the flexible ruler;

[0016] Step 2: Pull the handle and the end of the flexible ruler. The rack surface of the flexible ruler drives the gear to rotate. The gear-type counting sensor counts. The flexible ruler wraps the strands of rope tighter and tighter. When the tension value measured by the stress sensor reaches F, the gear-type counting sensor counts the number of teeth that have rotated as n. The values ​​of F and n are then transmitted to the data processor.

[0017] Step 3: The data processor calculates the diameter of the strands based on the count n and the total length L of the scale using the following formula. Where m is the tooth pitch of gear (8);

[0018] Step 4: Repeat the measurement at two points where the strands are at least 1 meter apart, following the method in steps 1 to 3, and calculate the arithmetic mean of the two measurements as the final measurement result.

[0019] Another feature of the technical solution of the present invention is that:

[0020] The tensile force F is 20% of the breaking tensile force of the strand.

[0021] The beneficial effects of this invention are:

[0022] Simply thread one end of the flexible ruler through the gear and tighten it manually. Once F reaches the required value, the instrument can automatically measure, process, and display the diameter of the strand. This instrument is lightweight, easy to operate, provides accurate measurements, and has a wide range of applications. Attached Figure Description

[0023] Figure 1 This is a front structural view of the portable strand diameter measuring instrument of the present invention;

[0024] Figure 2 This is a partial structural diagram of the portable strand diameter measuring instrument of the present invention;

[0025] Figure 3 This is a structural diagram of the portable strand diameter measuring instrument of the present invention;

[0026] Figure 4 This is a structural diagram of the gear and gear-type counting sensor of the present invention;

[0027] Figure 5 This is a structural diagram of the back of the display controller of the present invention.

[0028] In the diagram, 1. Ruler frame, 2. Handle, 3. Display controller, 4. Flexible ruler body, 5. Rack surface, 6. Display, 7. Control buttons, 8. Gear, 9. Smooth surface, 10. Stress sensor, 11. Gear bracket, 12. Fixture, 13. Gear-type counting sensor, 14. Data processor, 15. Power supply. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, the present invention provides a strand diameter measuring instrument, including a ruler frame 1, which is the skeleton of the entire measuring instrument. The ruler frame 1 consists of a handle 2 and a fixing frame 12. The front of the fixing frame 12 has a display controller 3, and the back of the fixing frame 12 has a gear support frame 11. A gear 8 and a stress sensor 10 are fixed on the gear support frame. The stress sensor 10 is connected to a flexible ruler body 4.

[0031] Display controller 3, such as Figure 2 and Figure 4 The display controller 3 has a display 6 on the front and control buttons 7 below the display 6. The display controller 3 has a data processor 14 on the back. The data processor 14 is connected to the stress sensor 10, the gear-type counting sensor 13 and the display 6 respectively.

[0032] The flexible ruler 4 includes a rack surface 5. After the rack surface 5 is bent, it passes through the channel formed by the gear 8 and the stress sensor 10. The rack surface 5 meshes with the gear 8. When the flexible ruler 4 is pulled, the gear 8 rotates flexibly and transmits the number of rotations to the data processor 14.

[0033] The flexible ruler 4 includes a smooth surface 9, which contacts and is tensioned with the strands of rope. The stress sensor 10 transmits the tension value to the data processor.

[0034] The power supply 15 is fixed on the back of the display controller 3. The power supply 15 provides power to the display 6, the data processor 14, the gear-type counting sensor 13 and the stress sensor 10.

[0035] Another aspect of the present invention is a method for measuring the diameter of a strand, which uses the aforementioned strand diameter measuring instrument for measurement. The specific steps are as follows:

[0036] Step 1: Hold the handle 2 in the ruler frame 1 and bend the flexible ruler 4 through the channel formed by the gear 8 and the stress sensor 10, with its smooth surface wrapped around the strands of rope.

[0037] Step 2, front of the flexible ruler—the rack 5 meshes with the gear 8, with each tooth spaced m apart;

[0038] Step 3: Clear the diameter and tension values ​​on the display 6 of the measuring instrument by pressing the control button 7 in the display controller 3. Pull the end of the flexible ruler 4 by hand. The front of the flexible ruler - the rack 5 drives the gear 8 to rotate and count n. The front of the flexible ruler - the rack 5 gradually wraps the strands of rope and becomes tighter and tighter. When the tension value reaches F, the gear-type counting sensor 13 counts n and the tension value F and transmits them to the data processor 14 and the display 6 respectively.

[0039] Step 4, the data processor 14 calculates the strand diameter D based on the count n and the total length L of the scale using the following formula:

[0040]

[0041] Step 5: The data processor 14 transmits the strand diameter D and displays it on the display 6.

[0042] After zeroing the strand diameter measuring instrument, repeat the measurement twice at two locations where the strands are at least 1 meter apart, following steps 1 to 4. Take the average of the two measured strand diameters as the final measurement result.

[0043] The device works by passing one end of the flexible ruler 4 through the gear 8 and manually tightening it. When the required value F is reached, the tension value F is 20% of the breaking tension of the strand, allowing for automatic measurement, data processing, and numerical display of the strand diameter. This instrument is lightweight, easy to operate, provides accurate measurements, and has a wide range of applications.

[0044] Example 1

[0045] like Figure 1 As shown, the present invention provides a portable strand diameter measuring instrument, including a ruler frame 1, a measuring unit fixedly connected to the back of the ruler frame 1, and a display controller 3 provided on the front of the ruler frame 1. The measuring unit is signal connected to the display controller 3.

[0046] Example 2

[0047] like Figure 1 As shown, the present invention provides a portable strand diameter measuring instrument, including a ruler frame 1, a measuring unit fixedly attached to the back of the ruler frame 1, and a display controller 3 provided on the front of the ruler frame 1. The measuring unit is connected to the display controller 3 via signal. The ruler frame 1 includes a handle 2, which is D-shaped, and a fixing frame 12 is vertically fixed to the straight side of the handle 2.

[0048] Example 3

[0049] like Figure 1-4 As shown, the present invention provides a portable strand diameter measuring instrument, including a ruler frame 1, a measuring unit fixedly attached to the back of the ruler frame 1, and a display controller 3 provided on the front of the ruler frame 1. The measuring unit is connected to the display controller 3 via signal. The ruler frame 1 includes a handle 2, which is D-shaped, and a fixing frame 12 is vertically fixed to the straight side of the handle 2.

[0050] The measuring unit includes a gear 8, with both ends of the gear 8 supported by a pair of gear support frames 11. The gear support frames 11 are fixed to the middle of the back of the fixed frame 12. A stress sensor 10 is fixed between the ends of the two gear support frames 11 away from the fixed frame 12. The axis of the gear 8 is parallel to the straight side of the handle 2. The side of the stress sensor 10 away from the handle 2 is fixed to one end of the flexible ruler 4. The other end of the flexible ruler 4 is bent toward the handle 2 and passes through the gap between the gear 8 and the stress sensor 10. The unit also includes a gear-type counting sensor 13, which is fixed to the back of the fixed frame 12. The axis of the gear-type counting sensor 13 coincides with the straight line containing the radius of the gear 8. The distance between the sensing end of the gear-type counting sensor 13 and the tooth tip of the gear 8 is 2-3 mm.

[0051] The flexible ruler body 4 includes a rack surface 5 and a smooth surface 9, and the teeth of the rack surface 5 mesh with the gear 8.

[0052] The display controller 3 has a display 6 and control buttons 7 on the front and a data processor 14 on the back. The data processor 14 is connected to the stress sensor 10, the gear-type counting sensor 13, and the display 6. A power supply 15 is fixedly connected to the back of the display controller 3. The power supply 15 is electrically connected to the display 6, the data processor 14, the gear-type counting sensor 13, and the stress sensor 10.

[0053] Example 4

[0054] like Figure 1-4 As shown, the present invention also provides a measurement method for a portable strand diameter measuring instrument, the specific steps of which are as follows:

[0055] Step 1: Pass the strand of rope through the loop formed by bending the flexible ruler 4;

[0056] Step 2: Pull the end of handle 2 and flexible ruler 4. The rack surface 5 of flexible ruler 4 drives gear 8 to rotate. Gear counting sensor 13 counts. Flexible ruler 4 wraps the strands of rope tighter and tighter. When the tension value measured by stress sensor 10 reaches F, gear counting sensor 13 counts the number of teeth that have rotated as n. The values ​​of F and n are transmitted to data processor 14.

[0057] Step 3, the data processor 14 calculates the diameter of the strand rope based on the count n and the total length L of the scale using the following formula. Where m is the tooth pitch of gear 8;

[0058] Step 4: Repeat the measurement at two points where the strands are at least 1 meter apart, following the method in steps 1 to 3, and calculate the arithmetic mean of the two measurements as the final measurement result.

[0059] The tensile force F is 20% of the breaking tensile force of the strand.

[0060] When measuring strands, this instrument and measurement method apply consistent and rigid pressure to the strands being measured by different operators, thereby reducing the difference in diameter error between different operators and ensuring its accuracy and precision.

Claims

1. A strand diameter measuring instrument, characterized in that, Includes a ruler frame (1), a measuring unit is fixedly attached to the back of the ruler frame (1), and a display controller (3) is provided on the front of the ruler frame (1). The measuring unit is signal connected to the display controller (3). The ruler frame (1) includes a handle (2), which is "D" shaped, and a fixing frame (12) is vertically fixed to the straight side of the handle (2). The measuring unit includes a gear (8), with both ends of the gear (8) supported by a pair of gear support frames (11). The gear support frames (11) are fixed to the middle of the back of the fixed frame (12). A stress sensor (10) is fixed between the ends of the two gear support frames (11) away from the fixed frame (12). The axis of the gear (8) is parallel to the straight side of the handle (2). The side of the stress sensor (10) away from the handle (2) is fixed to one end of the flexible ruler (4). The other end of the flexible ruler (4) bends toward the side of the handle (2) and passes through the gap between the gear (8) and the stress sensor (10). The unit also includes a gear-type counting sensor (13), which is fixed to the back of the fixed frame (12). The axis of the gear-type counting sensor (13) coincides with the straight line where the radius of the gear (8) is located. The distance between the sensing end of the gear-type counting sensor (13) and the tooth tip of the gear (8) is 2~3mm. The flexible ruler (4) includes a rack surface (5) and a smooth surface (9), and the teeth of the rack surface (5) mesh with the gear (8); The display controller (3) has a display (6) and control buttons (7) on the front and a data processor (14) on the back. The data processor (14) is connected to the stress sensor (10), the gear counting sensor (13) and the display (6) respectively. The display controller (3) has a power supply (15) fixedly connected to its back side. The power supply (15) is electrically connected to the display (6), the data processor (14), the gear-type counting sensor (13), and the stress sensor (10).

2. A method for measuring the diameter of a strand of rope, characterized in that, The specific steps for measuring the strand diameter using the strand diameter measuring instrument described in claim 1 are as follows: Step 1: Pass the strand through the loop formed by bending the flexible ruler (4); Step 2: Pull the end of the handle (2) and the flexible ruler (4). The rack surface (5) of the flexible ruler (4) drives the gear (8) to rotate. The gear counting sensor (13) counts. The flexible ruler (4) wraps the strands of rope and tightens them. When the tension value measured by the stress sensor (10) reaches F, the gear counting sensor (13) counts the number of teeth that have rotated as n. The values ​​of F and n are transmitted to the data processor (14). Step 3, the data processor (14) calculates the diameter of the strand based on the count n and the total length L of the scale using the following formula. , where m is the tooth pitch of gear (8); Step 4: Repeat the measurement at two points where the strands are at least 1 meter apart, following the method in steps 1 to 3, and calculate the arithmetic mean of the two measurements as the final measurement result. The tensile force F is 20% of the breaking tensile force of the strand.

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