Rapid and high-precision length measuring device and length measuring method for steel wire bolt rope loop of ammunition fixing mechanism

Abstract

The invention discloses a high-precision length measuring device for a steel wire bolt rope loop of a bullet fixing mechanism. The high-precision length measuring device comprises a profile underframe, a bolt head fixer, a measuring head, a scale, a vernier and a standard fastener. The bolt head fixer and the scale are respectively fixed on the section bar underframe by using section bar fasteners, and the scale is fixed on the measuring head; the measuring head is fixed by sliding on the underframe and tightening a nut; the bolt head fixing device fixes a steel wire bolt head in a profiling mode, the other end of the rope loop is arranged on the measuring head in a sleeving mode, the measuring head is used for tensioning, the total length of the rope loop is read through the ruler and the vernier, and the precision is 0.1 mm; the invention designs a high-precision steel wire bolt rope loop length measuring device and forms a rapid high-precision rope loop length measuring method in order to solve the problems of low precision and slow speed of measuring the length of a steel wire rope loop of a bullet fixing mechanism, especially the problem of consuming a large amount of time and energy in a large-batch inspection process.

Description

Technical Field

[0001] The present invention relates to a measuring method for the length of the wire rope loop of a missile solid missile mechanism, and specifically relates to a high-speed and high-precision measuring device and usage method for the wire rope loop of a solid missile mechanism bolt. Background Art

[0002] The solid missile mechanism is an important part of a missile in a launch tube. Its main function is to ensure the firm fixation of the missile to the launch tube during the transportation and storage of the missile, and at the same time, it can be unlocked in time during the launch process to ensure the smooth launch and separation of the missile. Common forms of solid missile mechanisms include explosive bolt solid missile mechanisms and single-stage flexible solid missile and unlocking devices such as tail-push ejectors. Among them, the explosive bolt solid missile mechanism realizes fixation by connecting the solid missile pin to the missile solid missile pin through an explosive bolt. During launch, the explosive bolt detonates, and the solid missile pin retracts to achieve unlocking; the single-stage flexible solid missile and unlocking device of the tail-push ejector passes a flexible wire rope through the tail seat and the missile tail-end connecting device and hangs on the locking hook. The hook is connected by a magnesium strip, making the launch tube barrel, the tail seat, and the missile into one stage to achieve single-stage solid missile. During unlocking, the magnesium strip burns and breaks under the push of the high-temperature gas ejected by the gas generator to achieve unlocking. The wire rope bolt is an important component and working part of the solid missile mechanism and must be in a tightened state when installed in the launch tube. The length of the wire rope loop is an important inspection item.

[0003] The wire rope bolt consists of a bolt head with holes and a wire rope loop passing through the holes. Using a manual measurement method, starting from the red mark at the rope loop joint, it rolls one circle along a tape measure or a long scale, and the read scale is used as the length value. This measurement method is relatively rough. During the rolling process of the wire rope, the rolling track is a segmented straight line segment, which cannot ensure collinearity. The measurement accuracy is 1 mm, and the length measurement occupies a relatively long space. Summary of the Invention

[0004] As an important component of the solid missile mechanism, the length of the wire rope loop affects the solid missile effect of the missile. If the wire rope is too long, it will cause failure. If the rope loop is too short, it is not easy to assemble, and too large a pre-tightening force will reduce the service life of the wire rope. Therefore, before assembly, it is necessary to measure and inspect the length of the wire rope loop, and pair and select wire rope loops that meet the requirements to make the assembly effect closer to the design value.

[0005] The present invention provides a high-precision measuring device for the wire rope loop of a solid missile mechanism bolt, characterized in that the device includes a bolt head fixator (100), a measuring head (200), a scale (300), a vernier (400), and a profile base frame (500); wherein,

[0006] The bolt head fixator (100) and the scale (300) are fixed on the profile base frame (500);

[0007] The scale (300) can move in the profile position, and the loop measurement of wire bolts with different diameters can be realized by aligning with bolt head holders of different specifications.

[0008] The cursor (400) is fixed on the measuring head (200), and the measuring head (200) is fixed on the profile chassis (500).

[0009] Preferably, the bolt head holder (100) adopts a profiling design method, and the bolt head can be completely placed into the bolt head holder (100).

[0010] A zero scale position is designed on the side of the bolt head holder (100), and the engraved line is collinear with the axis of the wire bolt head. The accuracy of the engraved line position is ensured by the machining accuracy.

[0011] Preferably, there is a plane for adjusting zeroing in front of the engraved line, and there is a corresponding boss on the back of the cursor (400). After the boss and the plane are fitted, the 0 engraved line is aligned to achieve physical limit.

[0012] Preferably, the upper part of the measuring head (200) is an annular groove, which can adapt to the diameter of the steel wire rope to clamp the steel wire rope, and there is a square limiting block at the bottom of the measuring head to ensure that the measuring head moves along the sliding groove.

[0013] Preferably, the square bottom plate at the bottom of the measuring head (200) can overcome the bending moment generated by the pulling force of the steel wire rope when the measuring head is tightened, and a cursor is installed on the side to directly read the value.

[0014] Preferably, the scale (300) is graduated in 1 mm; there is a trapezoidal boss on the back of the scale (300) that cooperates with the groove of the profile chassis (500), which can ensure that the measuring line of the scale is parallel to the straight line formed after the steel wire rope is straightened, ensuring the accuracy of the measurement reading.

[0015] Preferably, the scale (300) adopts double-row graduations. The upper row of graduations is the basic length, and the lower row of graduations is the calculated length of the steel wire rope loop. The calculated length of the steel wire rope can be directly read in cooperation with the cursor.

[0016] Preferably, the cursor (400) is a 20-division cursor, with auxiliary engraved lines on the upper part and a limiting block on the back for calibrating the scale position. The distance between the graduations is 0.95 mm, and the accuracy is 0.1 mm.

[0017] The present invention also provides a length measuring method for the high-precision wire bolt loop length measuring device for the solid elastic mechanism described above, which is characterized by including the steps:

[0018] Zero the device before measurement. Move the measuring head to the left until the cursor (400) contacts the scale backstop of the bolt head fixture (100), and confirm that the 0 scale line aligns with the scale line of the bolt head fixture (100).

[0019] Then loop the rope around the groove on the measuring head (200). Move the measuring head (200) until the wire rope loop is straightened. Read the integer part from the scale (300) and the decimal part from the cursor (400). Add 0.7 to the reading to obtain the total length of the wire rope loop.

[0020] In summary, the fast and high-precision wire rope loop measuring device for the missile fixing mechanism provided by the present invention can achieve fast and high-precision measurement of wire rope loops of various types of missile fixing mechanisms, solving the problems of large errors, slow speed, and large occupied space of the traditional rolling measurement method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 These are the three views of the device of the present invention;

[0022] Among them, 100 - bolt head fixture, 200 - measuring head, 300 - scale, 400 - cursor, 500 - profile base frame, 600 - wire bolt, 700 - nut, 800 - profile bolt fastener, 900 - profile fastener, 1000 - standard part screw, standard part screw M5×25 (1000), standard part screw M2×6 (1100), standard part screw M5×16 (1200), spring washer (1300), flat washer (1400)

[0023] Figures 2(a) and 2(b) are cross-sectional views of the device of the present invention;

[0024] Figure 3 These are the method flowcharts of the present invention;

[0025] Figure 4 These are the example diagrams of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The advantages and features of the concept of the present invention and the method for implementing it can be more easily understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings. However, the concept of the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the present invention to those skilled in the art. The concept of the present invention will only be defined by the claims.

[0027] The following further elaborates in detail on the fast and high-precision wire rope loop measuring device for the missile fixing mechanism proposed by the present invention in combination with the accompanying drawings and specific embodiments.

[0028] AsFigure 1 As shown in the figure, the present invention provides a high-precision wire bolt loop length measuring device for a solid bullet mechanism. The device includes a bolt head fixer (100), a measuring head (200), a scale (300), a vernier (400), and a profile base frame (500); among them,

[0029] The bolt head fixer (100) and the scale (300) are fixed on the profile base frame (500);

[0030] The scale (300) can move in the profile position, and by aligning with bolt head fixers of different specifications, the loop measurement of wire bolts with different diameters can be achieved;

[0031] The vernier (400) is fixed on the measuring head (200), and the measuring head (200) is fixed on the profile base frame (500).

[0032] According to an embodiment of the present invention, the bolt head fixer (100) adopts a profiling design method, and the bolt head can be completely placed into the bolt head fixer (100);

[0033] A zero scale position is designed on the side of the bolt head fixer (100), and the engraved line is collinear with the axis of the wire bolt head. The accuracy of the engraved line position is ensured by the machining accuracy.

[0034] According to an embodiment of the present invention, there is a plane for adjusting zeroing in front of the engraved line, and there is a corresponding convex platform on the back of the vernier (400). After the convex platform and the plane are fitted, the 0 engraved line is aligned to achieve physical limit.

[0035] According to an embodiment of the present invention, the upper part of the measuring head (200) is an annular groove, which can adapt to the diameter of the wire rope and clamp the wire rope. There is a square limit block at the bottom of the measuring head to ensure that the measuring head moves along the chute.

[0036] According to an embodiment of the present invention, the square bottom plate at the bottom of the measuring head (200) can overcome the bending moment generated by the wire rope tension when the measuring head is tightened, and a vernier is installed on the side to directly read the value.

[0037] According to an embodiment of the present invention, the scale (300) is graduated in 1 mm; there is a trapezoidal convex platform on the back of the scale (300) that cooperates with the groove of the profile base frame (500), which can ensure that the measuring line of the scale is parallel to the straight line formed after the wire rope is straightened, ensuring the accuracy of the measurement reading.

[0038] According to an embodiment of the present invention, the scale (300) adopts double-row graduations. The upper row of graduations is the basic length, and the lower row of graduations is the calculated length of the wire rope loop. The calculated length of the wire rope can be directly read in cooperation with the vernier.

[0039] According to an embodiment of the present invention, the cursor (400) is a 20-division cursor with auxiliary graduation lines on the upper part and a limit block on the back for calibrating the scale position. The distance between graduations is 0.95 mm and the accuracy is 0.1 mm.

[0040] The measurement principle of the present invention is implemented as follows:

[0041] The present invention relates to a high-precision length measuring device and method for the wire rope loop of a solid bullet mechanism, mainly composed of a bolt head fixer, a measurement head, a scale, and a cursor. Taking the end face of the wire bolt head as a reference, the rope loop is sleeved on the measurement head, and the measurement head is pulled until the wire rope is straightened. At this time, the two ends of the wire rope loop are arcs, and the middle two sections are straight sections. The radius of the inner hole arc of the bolt head is R, and the radius of the measurement head is also R. Reading the length d of the straight section, the total length of the wire rope loop is L = 2πR + 2d; the scale starts with a length of 2πR (omitting the numerical value after the decimal point and in mm as the unit), and the unit scale is 2 mm, and the rope length can be roughly read directly.

[0042] Referring to Figure 2, the present invention mainly consists of a bolt head fixer (100), a measurement head (200), a scale (300), a cursor (400), a profile base plate (500), a wire bolt (600), a nut (700), a profile bolt fastener (800), a profile fastener (900), a standard screw M5×25 (1000), a standard screw M2×6 (1100), a standard screw M5×16 (1200), a spring washer (1300), and a flat washer (1400).

[0043] The main components of the high-speed and high-precision length measuring device for the wire rope loop of the solid bullet mechanism are based on the profile base plate (500). The bolt head fixer (100) is installed at one end of the profile base plate (500) and fixed using the profile fastener (900) and the standard screw M5×16 (1200). The measurement head (200) is connected to the profile fastener (900) using the standard screw M5×25 (1000) and installed at the other end of the profile base plate (500), and can slide along the profile base plate (500). The cursor (400) is installed on the measurement head (200) using the standard screw M2×6 (1100). The scale (300) is fixed on one side of the profile base plate (500) and fixed using the profile bolt fastener (800), the spring washer (1300), the flat washer (1400), and the nut (700), and the 20 graduation lines are aligned with the graduations on the bolt head fixer (100).

[0044] The operation process for quickly measuring the length of a wire rope bolt loop is shown in Figures 2 and 3. Before measurement, zero the device. Move the measuring head to the left until the cursor (400) contacts the scale backstop of the bolt head fixture (100), and confirm that the 0 scale line aligns with the scale line of the bolt head fixture (100). Then, place the loop on the groove of the measuring head (200), move the measuring head (200) until the wire rope loop is straightened, read the integer part (in millimeters) from the scale (300), read the decimal part from the cursor (400), and add 0.7 to the reading to obtain the total length of the wire rope loop (with an error of 0.1 mm). For example Figure 4 As shown, the scale reading is 547, and the cursor scale 5 aligns with the scale, so the reading is 547.5. The total length of the wire rope loop is 548.3 ± 0.05 mm. When measuring multiple wire rope loops, marks can be made near the qualified scale lines. If the cursor scale of the loop is within the specified range after pulling the loop, it is considered qualified.

[0045] Finally, the embodiments and examples of the inventive concept have been described in detail above. However, the inventive concept can be implemented in many different forms and should not be construed as limited to the embodiments described above. Instead, these embodiments are described so that the present disclosure will be comprehensive and complete, and will fully convey the inventive concept to those skilled in the art. Thus, the actual spirit and scope of the inventive concept are not limited by the embodiments and examples described above but are defined by the claims.

Claims

1. A high-precision wire bolt rope loop length measuring device for a solid missile mechanism, characterized in that, The device includes a bolt head fixer (100), a measuring head (200), a scale (300), a vernier (400), and a profile chassis (500); among which, The bolt head fixer (100) and the scale (300) are fixed on the profile chassis (500); The scale (300) can move in the profile position, and by aligning with bolt head fixers of different specifications, the loop measurement of wire bolts with different diameters can be achieved; The vernier (400) is fixed on the measuring head (200), and the measuring head (200) is fixed on the profile chassis (500).

2. The wire bolt rope loop length measuring device for a high-precision solid bullet mechanism according to claim 1, wherein The bolt head fixer (100) adopts a profiling design method, and the bolt head can be completely placed into the bolt head fixer (100); A zero scale position is designed on the side of the bolt head fixer (100), and the engraved line is collinear with the axis of the wire bolt head. The accuracy of the engraved line position is ensured by the machining accuracy.

3. A high-precision wire bolt rope loop length measuring device for a solid bullet mechanism according to claim 2, characterized in that, There is a plane for adjusting zeroing in front of the engraved line, and there is a corresponding boss on the back of the vernier (400). After the boss and the plane are fitted, the 0 engraved line is aligned to achieve physical limit.

4. A high-precision wire bolt rope loop length measuring device for a solid bullet mechanism according to claim 1, characterized in that The upper part of the measuring head (200) is an annular groove, which can be adapted to the diameter of the steel wire rope to clamp the steel wire rope. There is a square limit block at the bottom of the measuring head to ensure that the measuring head moves along the chute.

5. A high-precision wire rope loop length measuring device for a solid bullet mechanism according to claim 4, characterized in that, The square bottom plate at the bottom of the measuring head (200) can overcome the bending moment generated by the steel wire rope tension when the measuring head is tightened. A vernier is installed on the side to directly read the value.

6. The wire bolt rope loop length measuring device for a high-precision solid bullet mechanism according to claim 1, characterized in that The scale (300) is graduated in 1 mm; there is a trapezoidal boss on the back of the scale (300) that mates with the groove of the profile chassis (500), which can ensure that the measuring line of the scale is parallel to the straight line formed after the steel wire rope is straightened, ensuring the accuracy of the measurement reading.

7. A high-precision wire bolt rope loop length measuring device for a solid bullet mechanism according to claim 6, characterized in that The scale (300) adopts double-row graduations. The upper row of graduations is the basic length, and the lower row of graduations is the calculated length of the steel wire rope loop. The calculated length of the steel wire rope can be directly read in cooperation with the vernier.

8. A high-precision wire bolt rope loop length measuring device for a solid bullet mechanism according to claim 7, characterized in that, The vernier (400) is a 20-division vernier. There are auxiliary engraved lines on the upper part, and a limit block on the back for calibrating the scale position. The distance between the graduations is 0.95 mm, and the accuracy is 0.1 mm.

9. A length measurement method for a length measurement device of a steel wire bolt rope loop of a solid bullet mechanism with high precision applicable to any one of claims 1-8, characterized in that, It includes the steps: Before measurement, zeroing is performed first. Move the measuring head to the left until the vernier (400) contacts the scale line backing of the bolt head fixer (100), and confirm that the 0 scale line is aligned with the scale line of the bolt head fixer (100); Then put the wire rope loop into the groove on the measuring head (200), move the measuring head (200) until the wire rope loop is straightened, read the integer part from the scale (300), read the decimal part from the vernier (400), and the total length of the wire rope loop is the reading plus 0.7.

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