Portable stranded rope diameter measuring instrument and measuring method

Abstract

The portable stranded rope diameter measuring instrument comprises a ruler frame, a measuring unit is fixedly connected to the back face of the ruler frame, a display controller is arranged on the front face of the ruler frame, and the measuring unit is in signal connection with the display controller. When F reaches a required value, automatic measurement, data processing and numerical value display can be carried out on the diameter of the stranded rope only by penetrating one end of the flexible ruler body through the gear and manually tensioning the flexible ruler body. The instrument is light, easy to operate, accurate in measurement and wide in application range.

Description

Technical Field

[0001] The invention belongs to the technical field of yarn diameter measuring equipment, and relates to a portable yarn diameter measuring instrument. The invention also relates to a method for measuring by using the device. Background Art

[0002] In many fields such as industrial production, processing and manufacturing, and engineering hoisting, steel wire ropes, hemp core ropes, nylon ropes, and carbon fiber ropes are one of the indispensable accessories. In practical applications, ropes mainly play the role of force steering and transfer, weight bearing, positioning and connection. During their production and use, these accessories need to have sufficient measured diameters to ensure their breaking tension, matching with equipment, and whether the diameter reduction reaches scrap. Therefore, in the design, production, use, maintenance, and scrapping of strand ropes, it is necessary to pay attention to the important indicator of diameter. It is crucial to use convenient tools and correct methods to measure and evaluate the diameter.

[0003] At present, duckbill vernier calipers are mainly used in production to measure the diameters of steel wire ropes, hemp core ropes, nylon ropes, and carbon fiber ropes. Due to the elliptical diameter of the rope strands, different clamping forces, and poor rigidity of the rope strands, the diameters measured each time or by different operators are different. The accuracy and precision cannot be guaranteed, and the requirements of standardized measurement cannot be met. In particular, the measurement errors of hemp core ropes, nylon ropes, and carbon fiber ropes using vernier calipers are even greater, and cannot accurately guide design optimization, production use, and scrapping.

[0004] Therefore, there is an urgent need to develop a rope diameter measuring tool that is simple to operate and has accurate measurement data. Summary of the invention

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

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

[0007] The technical solution adopted by the present invention is to include 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 connected to the display controller by signal.

[0008] The present invention is also characterized in that:

[0009] The ruler frame comprises a handle which is in a "D" shape, and a fixing frame is vertically fixed to a straight side of the handle.

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

[0011] The flexible ruler body comprises a rack surface and a smooth surface, and the teeth of the rack surface are meshed with the gear.

[0012] A display and control buttons are arranged on the front of the display controller, and a data processor is arranged on the back of the display controller. The data processor is respectively connected with the stress sensor, the gear type counting sensor and the display signal.

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

[0014] Another technical solution adopted by the present invention is that the specific measurement steps are:

[0015] Step 1, passing the strand 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 counting sensor counts, the flexible ruler wraps the strand and becomes tighter and tighter, when the tension value measured by the stress sensor reaches F, the gear counting sensor counts the number of teeth rotated as n, and transmits the values ​​of F and n to the data processor;

[0017] Step 3: The data processor calculates the diameter of the strand according to the count n and the total length L of the scale by the following formula: Wherein m is the tooth pitch of gear (8);

[0018] Step 4: Repeat the measurement according to the methods of steps 1 to 3 at two locations of the rope that are not less than 1 meter apart, and calculate the arithmetic mean of the two measurements as the final measurement result.

[0019] Another technical solution of the present invention is also characterized in that:

[0020] The value of the tension F is 20% of the breaking tension of the strand.

[0021] The beneficial effects of the present invention are:

[0022] Just pass one end of the flexible ruler through the gear and tighten it manually. When F reaches the required value, the rope diameter can be automatically measured, data processed and numerically displayed. The instrument is relatively light, easy to operate, accurate in measurement and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front structural diagram of the portable strand rope diameter measuring instrument of the present invention;

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

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

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

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

[0028] In the figure, 1. ruler frame, 2. handle, 3. display controller, 4. flexible ruler body, 5. rack surface, 6. display, 7. control button, 8. gear, 9. smooth surface, 10. stress sensor, 11. gear bracket, 12. fixing bracket, 13. gear type counting sensor, 14. data processor, 15. power supply. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, a yarn diameter measuring instrument of the present invention includes a ruler frame 1, which is the skeleton of the entire measuring instrument. The ruler frame 1 is composed of a handle 2 and a fixed frame 12. The fixed frame 12 has a display controller 3 on the front, and a gear support frame 11 on the back of the fixed frame 12. 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, a control button 7 below the display 6, and a data processor 14 on the back of the display controller 3. The data processor 14 is respectively connected to the stress sensor 10, the gear-type counting sensor 13, and the display 6 by signal;

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

[0033] The flexible ruler 4 comprises a smooth surface 9, which contacts and tightens the strands, and the stress sensor 10 transmits the tension value to the data processor.

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

[0035] Another solution of the present invention is a method for measuring the diameter of a yarn rope, which uses the above-mentioned yarn rope diameter measuring instrument to perform measurement, and the specific steps are as follows:

[0036] Step 1, holding the handle 2 in the ruler frame 1, bend the flexible ruler body 4 through the channel formed by the gear 8 and the stress sensor 10, and wrap the smooth surface of the ruler around the strand rope;

[0037] Step 2, front side of the flexible ruler - the rack 5 is meshed with the gear 8, and the interval between each tooth is m;

[0038] Step 3, clear the diameter and tension values ​​in the interface of the measuring instrument display 6 by the control button 7 in the display controller 3, pull the end of the flexible ruler body 4 by hand, and the front face of the flexible ruler - the rack 5 drives the gear 8 to rotate to count n, and the front face of the flexible ruler - the rack 5 gradually wraps the strand 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, which are transmitted to the data processor 14 and the display 6 respectively;

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

[0040]

[0041] In step 5 , the data processor 14 transmits the yarn diameter D and displays it on the display 6 .

[0042] After the yarn rope diameter measuring instrument is reset to zero, the yarn rope can be measured twice at two positions not less than 1 meter apart according to the method of steps 1 to 4, and the average of the yarn rope diameters obtained twice is taken as the final measurement result.

[0043] The working principle of the device is to pass one end of the flexible ruler 4 through the gear 8 and tighten it manually. When F reaches the required value, the tension value F is 20% of the breaking tension of the strand rope, and the strand rope diameter can be automatically measured, data processed and numerically displayed. The instrument is relatively light, simple to operate, accurate in measurement, and has a wide range of applications.

[0044] Example 1

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

[0046] Example 2

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

[0048] Example 3

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

[0050] The measuring unit includes a gear 8, both ends of which are supported by a pair of gear support frames 11, the gear support frame 11 is fixedly connected to the middle of the back side of the fixing frame 12, a stress sensor 10 is fixedly connected between the ends of the two gear support frames 11 away from the fixing 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 fixedly connected to one end of the flexible ruler 4, the other end of the flexible ruler 4 is bent toward the side of the handle 2 and passes through the gap between the gear 8 and the stress sensor 10, and also includes a gear type counting sensor 13, the gear type counting sensor 13 is fixedly connected to the back side of the fixing 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, and the spacing between the sensing end of the gear type counting sensor 13 and the tooth tip of the gear 8 is 2 to 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 are meshed with the gear 8 .

[0052] The display controller 3 is provided with a display 6 and a control button 7 on the front, and a data processor 14 is provided on the back of the display controller 3. The data processor 14 is respectively 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, and the power supply 15 is respectively 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 measuring method of a portable yarn diameter measuring instrument, the specific steps are:

[0055] Step 1, passing the strand through the loop formed by bending the flexible ruler 4;

[0056] Step 2, pull the handle 2 and the end of 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 strand and becomes tighter and tighter, when the tension value measured by the stress sensor 10 reaches F, the gear counting sensor 13 counts the number of teeth rotated as n, and transmits the values ​​of F and n to the data processor 14;

[0057] Step 3, the data processor 14 calculates the diameter of the strand according to the count n and the total length L of the scale by the following formula: Where m is the tooth pitch of gear 8;

[0058] Step 4: Repeat the measurement according to the methods of steps 1 to 3 at two locations of the rope that are not less than 1 meter apart, and calculate the arithmetic mean of the two measurements as the final measurement result.

[0059] The value of the tension F is 20% of the breaking tension of the strand.

[0060] When measuring the strand rope, the instrument and measuring method provide the same pressing force to the measured strand rope by different operators and have good rigidity, thereby reducing the difference in diameter error measured by different operators and ensuring its accuracy and precision.

Claims

1. A rope diameter measuring instrument, characterized in that: It comprises a ruler frame (1), the back of the ruler frame (1) is fixedly connected with a measuring unit, the front of the ruler frame (1) is provided with a display controller (3), and the measuring unit is connected with the display controller (3) by signal.

2. The yarn diameter measuring instrument according to claim 1, characterized in that: The ruler frame (1) comprises a handle (2), the handle (2) is in a "D" shape, and a fixing frame (12) is vertically fixed to a straight side of the handle (2).

3. The yarn diameter measuring instrument according to claim 2, characterized in that: The measuring unit comprises a gear (8), the two ends of the gear (8) are supported by a pair of gear support frames (11), the gear support frames (11) are fixedly connected to the middle of the back of a fixing frame (12), a stress sensor (10) is fixedly connected between the ends of the two gear support frames (11) away from the fixing 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 fixedly connected to one end of a flexible ruler (4), the other end of the flexible ruler (4) is bent toward one side of the handle (2) and passes through the gap between the gear (8) and the stress sensor (10), and also comprises a gear type counting sensor (13), the gear type counting sensor (13) is fixedly connected to the back of the fixing 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, and the spacing between the sensing end of the gear type counting sensor (13) and the tooth tip of the gear (8) is 2 to 3 mm.

4. The yarn diameter measuring instrument according to claim 3, characterized in that: The flexible ruler (4) comprises a rack surface (5) and a smooth surface (9), and the teeth of the rack surface (5) are meshed with the gear (8).

5. The yarn diameter measuring instrument according to claim 4, characterized in that: The display controller (3) is provided with a display (6) and control buttons (7) on the front, and a data processor (14) is provided on the back of the display controller (3). The data processor (14) is respectively connected to the stress sensor (10), the gear-type counting sensor (13), and the display (6) by signals.

6. A yarn diameter measuring instrument according to claim 5, characterized in that: The display controller (3) is fixedly connected to a power supply (15) on the back side, and 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) respectively.

7. A method for measuring the diameter of a strand rope, characterized in that: The yarn diameter measuring instrument according to claim 7 is used for measurement, and the specific steps are as follows: Step 1, passing the strand through the loop formed by bending the flexible ruler (4); Step 2, pull the handle (2) and the end of 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 strand and becomes tighter and tighter, when the tension value measured by the stress sensor (10) reaches F, the gear counting sensor (13) counts the number of teeth rotated as n, and transmits the values ​​of F and n to the data processor (14); Step 3, the data processor (14) calculates the diameter of the strand according to the count n and the total length L of the scale by the following formula: Wherein m is the tooth pitch of gear (8); Step 4: Repeat the measurement according to the methods of steps 1 to 3 at two locations of the rope that are not less than 1 meter apart, and calculate the arithmetic mean of the two measurements as the final measurement result.

8. The method for measuring yarn diameter according to claim 7, characterized in that: The tension value F is 20% of the breaking tension of the yarn.

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