Rapid detection device for turning angle of fairway groove

Abstract

The invention discloses a fairway groove corner rapid detection device, which comprises a main frame, an upper tip and a lower tip, and is characterized in that the lower tip is installed at the bottom of the main frame, and the upper tip is installed at the top of the main frame and can move relative to the lower tip; an anti-inclination seat sleeve is arranged on the outer layer of the lower tip, a belt wheel shaft used for detection is arranged between the upper tip and the lower tip, a supporting plate used for positioning the belt wheel shaft is arranged between the main frame and the belt wheel shaft, a pressing plate is arranged above the supporting plate, and a pressing assembly used for fixing the pressing plate is arranged on the main frame. The side surface of the anti-inclination seat sleeve is provided with a detection assembly, and the detection assembly comprises a measurement driving lever and a dial indicator. The measuring deflector rod is installed on the outer layer of the belt wheel shaft and can synchronously rotate along with the belt wheel shaft. The dial indicator is adjacent to the end face of the measuring deflector rod. According to the invention, accurate positioning is carried out on the axial direction and the radial direction of the belt wheel shaft, the detection position is extended through the detection assembly, rotation angle measurement is converted into length measurement, the measurement precision is high, and the versatility is good.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of detection devices, and particularly relates to a device for quickly detecting the rotation angle of a ball channel. BACKGROUND

[0002] A belt wheel shaft is processed with a ball channel on the body of the belt wheel shaft during processing, and the ball channel needs to be arranged symmetrically left and right relative to the center of the belt wheel shaft; after the processing of the belt wheel shaft is completed, the rotation angle precision of the ball channel is required to be high, and the rotation angles of the left and right sides of the ball channel are important bases for judging whether the part is qualified, and here the rotation angles often need to be measured by an angle measuring tool. A device for detecting the rotation angle of a rotary reducer is disclosed in a patent document CN117516455A, which comprises a rotary seat, a rotary reducer and an angle measuring assembly; the rotary seat comprises an annular connecting frame and an annular engaging piece; the annular connecting frame is connected with the rotary end of the rotary reducer; the annular engaging piece is installed on the outer edge of the annular connecting frame; the angle measuring assembly comprises a circular engaging piece and an angle sensor; the outer edge of the circular engaging piece is engaged with the annular engaging piece, and the center is connected with the input end of the angle sensor. The existing angle measuring assembly measures the rotation angle by using the angle sensor, and the production cost is high and a control circuit is needed for conversion, and the structure is relatively complex. When measuring the rotation angle of a small angle, the requirement for the calibration of the initial position is high, and the angle sensor has certain errors, so that the rotation angle of a small angle cannot be accurately measured, and the universality is poor. SUMMARY

[0003] The present application is designed to solve the problems in the prior art, and a device for quickly detecting the rotation angle of a ball channel is designed, the axial and radial directions of the belt wheel shaft are accurately positioned, the detection position is extended by a detection assembly, the measurement of the rotation angle is converted into the measurement of the length, and the measurement precision is high and the universality is good.

[0004] The application aims to realize the following technical scheme: a device for quickly detecting the rotation angle of a ball channel, which comprises a main frame, an upper center and a lower center, the lower center is installed at the bottom of the main frame, the upper center is installed at the top of the main frame and can move relative to the lower center; an anti-tilting seat sleeve is arranged on the outer layer of the lower center, and a belt wheel shaft for detection is arranged between the upper center and the lower center; a supporting plate for positioning the belt wheel shaft is arranged between the main frame and the belt wheel shaft, a pressing plate is arranged above the supporting plate, and a pressing assembly for fixing the pressing plate is arranged on the main frame; a detection assembly is arranged on the side surface of the anti-tilting seat sleeve, and the detection assembly comprises a measuring lever and a dial indicator; the measuring lever is installed on the outer layer of the belt wheel shaft and can rotate synchronously with the belt wheel shaft, and the dial indicator is arranged adjacent to the end surface of the measuring lever.

[0005] Preferably, the main frame includes a main base, a column, and a cross arm. The column is fixedly installed on the main base, and the cross arm is fixedly installed on the column. A reinforcing rib is provided between the column and the cross arm. A bushing is installed on the cross arm, and an upper center is inserted into the bushing. The bottom of the upper center faces the pulley shaft. A support plate is provided on the column and is rotatably connected to it.

[0006] Preferably, the column is provided with a hollow mounting part, and a support plate is installed inside the hollow mounting part. A pin is provided between the support plate and the column to connect the two. The pin passes through the support plate and the column. The support plate is provided with an oblong hole for inserting the pin. The outline of the oblong hole is adapted to the outer diameter of the pin. A pressure plate is provided above the support plate. A support part is provided on the support plate. An arc-shaped placement part is provided at the bottom of the pressure plate. The arc-shaped placement part is fitted to the support part, and the outline of the arc-shaped placement part is adapted to the outline of the support part. A first fastener is installed on the cross arm. The first fastener passes through the cross arm and extends into the bushing.

[0007] Preferably, the pressure plate has paired clamping assemblies on both sides, which are fixedly installed at the bottom of the main frame. Each clamping assembly includes a mounting base, a clamping cylinder, and a clamping foot. The mounting base is fixed to the main frame with screws, and a flat key for limiting movement is provided between the mounting base and the main frame. A clamping cylinder is fixedly installed on the mounting base. The cylinder body of the clamping cylinder is provided with a first connecting rod hinged thereto, and the piston rod of the clamping cylinder is provided with a second connecting rod hinged thereto. The first and second connecting rods are hinged to each other, and a clamping foot is fixedly installed at the end of the second connecting rod. When the piston rod of the clamping cylinder extends, the lower end face of the clamping foot is in contact with the upper end face of the pressure plate.

[0008] Preferably, the pulley axle has a convex disc in the middle, and the support plate has a support portion, the outline of which matches the outline of the convex disc; a pressure plate is sleeved on the outer side of the pulley axle, and the pulley axle can rotate relative to the pressure plate; a vertical pin for positioning detection is provided between the pressure plate and the pulley axle, the pressure plate has a first ball track, and the pulley axle has a second ball track; the first and second ball tracks surround to form a placement channel for placing the vertical pin, the outline of which matches the outline of the vertical pin; the vertical pin is fitted against the inner wall of the first ball track, and there is a detection gap between the vertical pin and the inner wall of the second ball track, the bottom of the vertical pin is installed on the arcuate inner wall of the second ball track; the left and right sides of the second ball track are respectively provided with a first contact portion and a second contact portion symmetrically arranged; in the default state, the vertical pin is fitted against the second contact portion.

[0009] The bottom of the pulley shaft is limited by a lower center and an anti-tilt sleeve, while the top is limited by an upper center. During measurement, the upper center is locked by a first fastener extending into the bushing. Due to its own weight, the upper center can also press downwards against the pulley shaft under gravity. The bushing and anti-tilt sleeve limit the upper center and pulley shaft respectively, resulting in better concentricity during rotation. A support plate further limits the radial and axial positioning of the pulley shaft, with its support portion fitting snugly against the pulley shaft's convex disc. A pressure plate further limits the support plate, resulting in better overall positioning of the pulley shaft by the pressure plate, support plate, and clamping assembly. This prevents deviation of the pulley shaft's central axis during testing, leading to higher overall testing accuracy. The tray features a slotted hole, facilitating its rotation and allowing for easy installation of the pulley shaft into its groove. When the pulley shaft is in place, the tray fits snugly against it, with the pin positioned at the top of the slotted hole. As the pressure plate presses down on the tray, it tends to sink relative to the pin, resulting in better positioning. Once in place, the pressure plate is secured by a clamping assembly. The piston rod of the clamping cylinder extends, causing the first and second connecting rods to rotate synchronously, controlling the pressure foot to press down and fix the pressure plate. The use of first and second connecting rods enhances the clamping effect. When the pulley shaft needs to be removed, the clamping cylinder retracts, releasing the pressure plate and allowing for easy removal.

[0010] In the actual testing process, a vertical pin needs to be installed in the placement channel formed by the first and second ball lanes. In the default state, the vertical pin is engaged with the second contact part in the second ball lane. Then, the operator rotates the measuring lever on the testing assembly, and the measuring lever and the pulley shaft rotate synchronously. When the pulley shaft rotates, it will move relative to the vertical pin, so that the vertical pin will disengage from the second contact part. When the measuring lever is rotated to the correct position, the vertical pin is engaged with the first contact part. During the time it takes for the vertical pin to move from the second contact point to the first contact point, the pulley shaft will rotate at the corresponding angle A. The detection requirement for angle A is that it must be less than or equal to 0.2 degrees. Since the angle A is small and the chord length is much smaller than the radius of the circle, the arc length corresponding to angle A is approximately equal to the chord length, allowing the dial indicator to measure the chord length B corresponding to angle A. Simultaneously, the measuring lever and the pulley shaft rotate synchronously. During rotation, the measuring lever and the pulley shaft are rigid bodies, and there will be no relative compression or relative deflection between them. The measuring lever and the pulley shaft can be considered as a single component. The measuring lever includes a bushing body and a long rod. The long rod is fitted to the dial indicator, and the angle measurement diameter of the long rod and the dial indicator is greater than or equal to 250 mm. Here, the pulley shaft's rotation radius is extended by the measuring lever, which facilitates measurement. At the same time, by extending the radius, the radius is made much larger than the chord length. Because the pulley shaft's own diameter is small, measurement is not convenient and the measurement position is difficult to locate. Let R be the radius of rotation corresponding to the position measured by the dial indicator, and B be the chord length corresponding to the angle A. According to the sine theorem, sin(A / 2) = B / (2R). Since the radius R is known, and the corresponding chord length B is measured by the dial indicator, we can calculate the angle value of A / 2, and then calculate the value of the angle A. When the angle A is less than 90 degrees, the sine function gradually increases within the range of 0 to 90 degrees. Therefore, by measuring the value with the dial indicator and then converting it to the corresponding angle, if the angle is less than 0.2 degrees, the pulley axle's angle is acceptable. Here, an angle less than 0.2 degrees corresponds to a chord length B. By judging the dial indicator value, we can quickly confirm whether the pulley axle's angle is acceptable.

[0011] Preferably, the lower center is fixedly mounted on the main frame, and an anti-tilt seat is fixedly mounted on the outer layer of the lower center; the bottom inner hole of the pulley shaft is mounted on the lower center, and the lower end face of the pulley shaft is mounted on the bottom of the anti-tilt seat; a measuring lever is sleeved on the outer layer of the pulley shaft, the measuring lever is rigidly connected to the pulley shaft and the two can rotate synchronously; a second fastener is provided between the measuring lever and the anti-tilt seat, and a clearance opening groove is provided on the side wall of the anti-tilt seat, through which the measuring lever passes and extends radially along the pulley shaft.

[0012] Preferably, the end of the main frame facing the anti-tilt seat is provided with a detection component, which also includes a limiting seat and an adjustable mounting seat; the limiting seat and the adjustable mounting seat are symmetrically arranged on both sides of the pulley shaft, the limiting seat is equipped with a limiting component, and the adjustable mounting seat is provided with a dial indicator and a tightening device, the tightening device and the limiting component are respectively arranged on both sides of the measuring lever.

[0013] Preferably, the measuring lever includes a bushing body and a long rod, which are integrally formed. The bushing body is sleeved and installed on the outer layer of the pulley shaft, and the long rod is disposed between the limiting seat and the adjustable mounting seat. The adjustable mounting seat has a mounting hole, and a dial indicator is disposed in the mounting hole. The adjustable mounting seat also has an adjustable opening communicating with the mounting hole. A third fastener for fixing the dial indicator and the adjustable mounting seat is disposed between the dial indicator and the adjustable mounting seat, and the third fastener passes through the adjustable opening. In the default state, the probe of the dial indicator is fitted against the right side of the long rod.

[0014] Preferably, the limiting member is threadedly connected to the limiting seat; the limiting member is oriented towards the tightening device, which includes a hollow threaded sleeve, a spring, a pin, and an adjusting screw; the hollow threaded sleeve is fixedly mounted on an adjustable mounting base, and a pin that can extend and retract relative to it is provided inside the hollow threaded sleeve; an adjusting screw is threadedly connected to the end of the hollow threaded sleeve, and a spring is provided between the adjusting screw and the pin; a first step is provided inside the hollow threaded sleeve, and an annular protrusion is provided on the pin, with the first step and the annular protrusion being adjacent to each other; one end of the spring abuts against the annular protrusion, and the other end of the spring abuts against the adjusting screw; in the default state, the spring is in a compressed state, and the pin is in contact with the measuring lever.

[0015] Preferably, the measuring lever includes a bushing body and a long rod, the long rod being fitted with a dial indicator, the measuring diameter of the long rod and the dial indicator being greater than or equal to 250 mm, and the measuring range of the long rod's rotation being less than 0.2 degrees.

[0016] By incorporating an anti-tilt sleeve, the measuring lever and pulley shaft are vertically limited, resulting in better concentricity of the pulley shaft. A clearance slot allows the measuring lever to extend from the anti-tilt sleeve, enabling it to engage with the dial indicator for angle measurement. A limit seat facilitates the installation of a limit component, which is threadedly connected to the limit seat, thus positioning the measuring lever in its initial position. A tightening device allows for setting the corresponding torsional force on the measuring lever. Mounting holes and adjustable openings facilitate the mounting of different dial indicator models on the adjustable mounting base. Initially, the spring is compressed, causing the end of the ejector pin to abut against the measuring lever. Adjusting the rotation position of the adjusting screw and hollow sleeve adjusts the initial spring compression, thereby regulating the ejector pin's extrusion force. Because the final detection angle of angle A is very small, a limiting component and a clamping device are used to limit the initial position of the measuring lever, thus preventing frequent fluctuations in the dial indicator. In the default state, the adjusting pin holds the measuring lever against the limiting component; at this time, the vertical pin rests against the second contact part of the pulley shaft. When angle A needs to be measured, the operator forcefully moves the measuring lever and then reads the change in the dial indicator value to determine whether angle A is qualified. To make the value of the measuring lever movement more accurate, the operator often uses a torque wrench to move the measuring lever; here, a torque value of 30 N*M is applied to the measuring lever.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention positions the pulley shaft through a pressure plate, a support plate, and an anti-tilt seat, thereby ensuring better concentricity of the pulley shaft during the testing process; 2. The pulley shaft is axially limited by the upper and lower centers, allowing it to still rotate; the pressure plate is fixed by the clamping assembly, further improving the positioning effect of the pulley shaft and greatly improving the measurement accuracy; 3. A measuring lever is set on the outside of the pulley shaft, thereby extending the rotation radius of the pulley shaft; since the ball track rotation angle of the tested pulley shaft is small, the chord length and arc length of the corresponding rotation angle are approximately the same, thus the arc length can be converted into the chord length measurement, and then the corresponding rotation angle can be calculated using trigonometric functions to determine whether the rotation angle of the pulley shaft is qualified; 4. During the testing process, the pulley shaft... 5. The pulley shaft and measuring lever are rigidly connected, allowing them to function as a single rigid body, resulting in better synchronization of rotation and higher measurement accuracy. 6. By setting limit seats and limit components, the initial position of the pulley shaft is restricted. Rotating the measuring lever allows for quick observation of the dial indicator's value changes, facilitating initial calibration and improving measurement accuracy. 7. Limit components and a clamping device further restrict the measuring lever's position, ensuring it rests against the limit components and the dial indicator's probe rests against the lever. This allows for synchronized data readings when the operator rotates the lever, minimizing measurement error. 8. The adjustable mounting base accommodates various dial indicator models, and the spring force of the clamping device's pins can be adjusted accordingly, enhancing measurement versatility. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the invention from another angle; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the internal structure from another perspective of the present invention; Figure 5 A 3D view of the detection component; Figure 6 This is a schematic diagram of the internal structure of the detection component; Figure 7 This is an exploded view of the present invention; Figure 8 This is a 3D view of the pressure plate; Figure 9 This is a 3D view of the tray; Figure 10 A 3D view of the anti-tipping seat cover; Figure 11 This is a 3D view of the pulley axle; Figure 12 This is a schematic diagram of the corner detection principle of the present invention; Markings in the diagram: 1. Main frame; 101. Main base; 102. Column; 103. Cross arm; 104. Reinforcing rib; 105. Bushing; 106. Hollow mounting part; 107. Waist-shaped hole; 2. Upper center; 3. Lower center; 4. Anti-tilt seat; 41. Clearance opening slot; 5. Wheel axle; 51. Outwardly protruding disc; 52. Second ball track; 53. First contact part; 54. Second contact part; 6. Support plate; 61. Support part; 7. Pressure plate; 71. Arc placement part; 72. First ball track; 8. Pressing assembly; 81. Mounting base; 82. Pressing cylinder; 83. Pressing foot 84. Flat key; 85. First connecting rod; 86. Second connecting rod; 9. Detection assembly; 91. Measuring lever; 911. Bushing body; 912. Long rod; 92. Dial indicator; 93. Limit seat; 94. Adjustable mounting seat; 95. Tightening device; 951. Hollow threaded sleeve; 952. Spring; 953. Ejector pin; 954. Adjusting screw; 955. First step; 956. Annular protrusion; 96. Mounting hole; 97. Adjustable opening; 98. Third fastener; 99. Limiting component; 10. Pin; 11. First fastener; 12. Vertical pin; 13. Second fastener. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments illustrated in the accompanying drawings: like Figures 1 to 12 As shown, this embodiment discloses a rapid detection device for the corner angle of a golf course, including a main frame 1, an upper center point 2, and a lower center point 3. The lower center point 3 is installed at the bottom of the main frame 1, and the upper center point 2 is installed at the top of the main frame 1 and can move relative to the lower center point 3. The outer layer of the lower center point 3 is provided with an anti-tilt seat 4. A pulley shaft 5 for detection is provided between the upper center point 2 and the lower center point 3. A support plate 6 for positioning the pulley shaft 5 is provided between the main frame 1 and the pulley shaft 5. A pressure plate 7 is provided above the support plate 6. A clamping assembly 8 for fixing the pressure plate 7 is provided on the main frame 1. A detection assembly 9 is provided on the side of the anti-tilt seat 4. The detection assembly 9 includes a measuring lever 91 and a dial indicator 92. The measuring lever 91 is installed on the outer layer of the pulley shaft 5 and can rotate synchronously with the pulley shaft 5. The dial indicator 92 is arranged adjacent to the end face of the measuring lever 91.

[0020] The main frame 1 includes a main base 101, a column 102, and a cross arm 103. The column 102 is fixedly installed on the main base 101, and the cross arm 103 is fixedly installed on the column 102. A reinforcing rib 104 is provided between the column 102 and the cross arm 103. A bushing 105 is installed on the cross arm 103, and an upper center 2 is inserted inside the bushing 105. The bottom of the upper center 2 is facing the pulley shaft 5. A support plate 6 is provided on the column 102 and is rotatably connected to it. The column 102 is provided with a hollow mounting part 106, and a support plate 6 is installed inside the hollow mounting part 106. A pin 10 is provided between the support plate 6 and the column 102 to connect the two. The pin 10 is provided through the support plate 6 and the column 102. The support plate 6 is provided with a waist-shaped hole 107 for inserting the pin 10. The outline of the waist-shaped hole 107 is adapted to the outer diameter of the pin 10. A pressure plate 7 is provided above the support plate 6. A support part 61 is provided on the support plate 6. An arc-shaped placement part 71 is provided at the bottom of the pressure plate 7. The arc-shaped placement part 71 is fitted to the support part 61, and the outline of the arc-shaped placement part 71 is adapted to the outline of the support part 61. A first fastener 11 is installed on the cross arm 103. The first fastener 11 passes through the cross arm 103 and extends into the bushing 105.

[0021] The pressure plate 7 has paired clamping assemblies 8 on both sides, which are fixedly installed at the bottom of the main frame 1. Each clamping assembly 8 includes a mounting base 81, a clamping cylinder 82, and a clamping foot 83. The mounting base 81 is fixed to the main frame 1 by screws, and a flat key 84 for limiting movement is provided between the mounting base 81 and the main frame 1. The clamping cylinder 82 is fixedly installed on the mounting base 81. The cylinder body of the clamping cylinder 82 is provided with a first connecting rod 85 hinged thereto, and the piston rod of the clamping cylinder 82 is provided with a second connecting rod 86 hinged thereto. The first connecting rod 85 and the second connecting rod 86 are hinged to each other, and the end of the second connecting rod 86 is fixedly installed with a clamping foot 83. When the piston rod of the clamping cylinder 82 extends, the lower end face of the clamping foot 83 is in contact with the upper end face of the pressure plate 7. The pulley shaft 5 has a convex disc 51 in the middle, and the support plate 6 has a support part 61. The outer contour of the support part 61 is adapted to the outer contour of the convex disc 51. A pressure plate 7 is sleeved on the outer side of the pulley shaft 5, and the pulley shaft 5 can rotate relative to the pressure plate 7. A vertical pin 12 for positioning detection is provided between the pressure plate 7 and the pulley shaft 5. The pressure plate 7 has a first ball track 72, and the pulley shaft 5 has a second ball track 52. The first ball track 72 and the second ball track 52 surround each other to form a structure for placing the vertical pin. The vertical pin 12 has a placement channel whose outline is adapted to the outline of the vertical pin 12; the vertical pin 12 is fitted to the inner wall of the first ball track 72, and there is a detection gap between the vertical pin 12 and the inner wall of the second ball track 52; the bottom of the vertical pin 12 is installed on the arc-shaped inner wall of the second ball track 52; the second ball track 52 is provided with a first contact part 53 and a second contact part 54 symmetrically arranged on the left and right sides respectively; in the default state, the vertical pin 12 is fitted to the second contact part 54.

[0022] The lower center point 3 is fixedly installed on the main frame 1, and an anti-tilt seat 4 is fixedly installed on the outer layer of the lower center point 3; the bottom inner hole of the pulley shaft 5 is installed on the lower center point 3, and the lower end face of the pulley shaft 5 is installed on the bottom of the anti-tilt seat 4; a measuring lever 91 is sleeved on the outer layer of the pulley shaft 5, and the measuring lever 91 is rigidly connected to the pulley shaft 5 and the two can rotate synchronously; a second fastener 13 is provided between the measuring lever 91 and the anti-tilt seat 4 for both; a clearance opening groove 41 is provided on the side wall of the anti-tilt seat 4, and the measuring lever 91 passes through the clearance opening groove 41 and extends radially along the pulley shaft 5. The main frame 1 is provided with a detection component 9 at the end facing the anti-tilt seat 4. The detection component 9 also includes a limiting seat 93 and an adjustable mounting seat 94. The limiting seat 93 and the adjustable mounting seat 94 are symmetrically arranged on both sides of the pulley shaft 5. The limiting seat 93 is equipped with a limiting element 99. The adjustable mounting seat 94 is provided with a dial indicator 92 and a tightening device 95. The tightening device 95 and the limiting element 99 are respectively arranged on both sides of the measuring lever 91. The measuring lever 91 includes a bushing body 911 and a long rod 912, which are integrally formed. The bushing body 911 is sleeved and installed on the outer layer of the pulley shaft 5. The long rod 912 is disposed between the limiting seat 93 and the adjustable mounting seat 94. The adjustable mounting seat 94 is provided with a mounting hole 96, and a dial indicator 92 is disposed in the mounting hole 96. The adjustable mounting seat 94 is also provided with an adjustable opening 97 that communicates with the mounting hole 96. A third fastener 98 for fixing the dial indicator 92 and the adjustable mounting seat 94 is provided between them, and the third fastener 98 passes through the adjustable opening 97. In the default state, the probe of the dial indicator 92 is fitted against the right side of the long rod 912.

[0023] The limiting member 99 is threadedly connected to the limiting seat 93; the limiting member 99 is positioned towards the tightening device 95, which includes a hollow threaded sleeve 951, a spring 952, a pin 953, and an adjusting screw 954; the hollow threaded sleeve 951 is fixedly mounted on the adjustable mounting base 94, and the hollow threaded sleeve 951 contains a pin 953 that can extend and retract relative to it; the end of the hollow threaded sleeve 951 is provided with an adjusting screw 954 threadedly connected to it, and a spring 952 is provided between the adjusting screw 954 and the pin 953; the hollow threaded sleeve 951 contains a first step 955, and the pin 953 has an annular protrusion 956, with the first step 955 and the annular protrusion 956 being adjacent to each other; one end of the spring 952 abuts against the annular protrusion 956, and the other end of the spring 952 abuts against the adjusting screw 954; in the default state, the spring 952 is in a compressed state, and the pin 953 is in contact with the measuring lever 91. The measuring lever 91 includes a bushing body 911 and a long rod 912. The long rod 912 is fitted with a dial indicator 92. The rotation measurement diameter of the long rod 912 and the dial indicator 92 is greater than or equal to 250 mm, and the rotation measurement range of the long rod 912 is less than 0.2 degrees.

[0024] The specific operation process of this embodiment is as follows: First, the anti-tilt seat 4 is fitted and installed on the lower center 3; Second, the measuring lever 91 is tightened and installed on the pulley shaft 5 to be tested, so that the measuring lever 91 and the pulley shaft 5 are a rigid body; Third, the pulley shaft 5 is placed in the groove of the support plate 6, and then the support plate 6, the pulley shaft 5 and the measuring lever 91 are installed together on the lower center 3, and the pulley shaft 5 abuts against the lower center 3 and the anti-tilt seat 4; At this time, the support plate 6 is installed in place, and the pin 10 is inserted into the support plate 6 and the column 102; Fourth, the measuring lever 91 is adjusted between the limiting seat 93 and the adjustable mounting seat 94; Under the action of the tightening device 95, the measuring lever 91 abuts against the limiting part 99, and the dial indicator 92 is adjusted to zero. The fifth step involves placing the pressure plate 7, which is compatible with the pulley shaft 5, into the pulley shaft 5, aligning the first ball track 72 and the second ball track 52, and then inserting the compatible vertical pin 12. The dimensions of the vertical pin 12 are crucial here; it must slide smoothly up and down relative to the pressure plate 7 within the placement channel, without being too tight or too loose. The sixth step involves using the external step cylinder to control the upper center point 2 to press against and lock the pulley shaft 5; then, the clamping assembly 8 presses down the pressure plate 7. The seventh step involves the operator using a torque wrench to move the measuring lever 91 and read the value change of the dial indicator 92, thereby determining whether the rotation angle of the pulley shaft 5 is qualified.

[0025] The bottom of the pulley shaft 5 is limited by the lower center 3 and the anti-tilt seat 4, and the top of the pulley shaft 5 is limited by the upper center 2. During the measurement process, the upper center 2 is locked by the first fastener 11 extending into the bushing 105. Since the upper center 2 has its own weight, it can also press the pulley shaft 5 downward under the action of gravity. By setting the bushing 105, the upper center 2 is limited, and by setting the anti-tilt seat 4, the pulley shaft 5 is limited, so that the pulley shaft 5 has better concentricity during rotation. Here, the radial and axial limits of the pulley shaft 5 are further limited by the support plate 6, and the support part 61 of the support plate 6 is fitted with the outer convex disk 51 of the pulley shaft 5. At the same time, the support plate 6 is limited by the pressure plate 7. Therefore, the pressure plate 7, the support plate 6, and the clamping assembly 8 have a better overall positioning effect on the pulley shaft 5, and prevent the central axis of the pulley shaft 5 from deflecting during the inspection process, resulting in higher overall inspection accuracy. The tray 6 has a slotted hole 107, which facilitates rotation and installation of the pulley shaft 5 into its groove. When the pulley shaft 5 is in place, the tray 6 fits against it, and the pin 10 is positioned at the top of the slotted hole 107. When the pressure plate 7 presses down on the tray 6, the tray 6 tends to sink relative to the pin 10, resulting in better positioning. When the pressure plate 7 is in place, it is fixed by the clamping assembly 8. The piston rod of the clamping cylinder 82 extends, causing the first connecting rod 85 and the second connecting rod 86 to rotate synchronously, thereby controlling the pressure foot 83 to press down and fix the pressure plate 7. The clamping effect is better achieved by using the first connecting rod 85 and the second connecting rod 86. When it is necessary to remove the pulley shaft 5, the clamping cylinder 82 retracts, causing the pressure plate 7 to lose its limit, thus facilitating the removal of the pulley shaft 5.

[0026] In the actual testing process, a vertical pin 12 needs to be installed in the placement channel formed by the first ball track 72 and the second ball track 52. In the default state, the vertical pin 12 is fitted with the second contact part 54 in the second ball track 52. Then, the operator rotates the measuring lever 91 on the testing assembly 9, and the measuring lever 91 and the pulley shaft 5 rotate synchronously. When the pulley shaft 5 rotates, it will move relative to the vertical pin 12, so that the vertical pin 12 will disengage from the second contact part 54. When the measuring lever 91 is rotated to the position, the vertical pin 12 is fitted with the first contact part 53. During the time it takes for the vertical pin 12 to move from the second contact part 54 to the first contact part 53, the pulley shaft 5 will rotate by the corresponding angle A. The required angle A is less than or equal to 0.2 degrees. Since the angle A is small and the chord length is much smaller than the radius of the circle, the arc length corresponding to angle A is approximately equal to the chord length. Therefore, the dial indicator 92 can measure the chord length B corresponding to angle A. Simultaneously, the measuring lever 91 and the pulley shaft 5 rotate synchronously. During rotation, the measuring lever 91 and the pulley shaft 5 are rigid bodies, and there will be no relative compression or contact between them. For deflection, the measuring lever 91 and the pulley shaft 5 can be considered as a single component; the measuring lever 91 includes a bushing body 911 and a long rod 912, the long rod 912 being fitted with the dial indicator 92, and the rotation angle measurement diameter of the long rod 912 and the dial indicator 92 being greater than or equal to 250 mm. Here, the rotation radius of the pulley shaft 5 is extended by the measuring lever 91, which facilitates measurement; at the same time, by extending the radius, the radius is made much larger than the chord length; because the diameter of the pulley shaft 5 itself is small, measurement is not convenient and the measurement position is difficult to locate. The radius of rotation corresponding to the position measured by dial indicator 92 is R, and the chord length corresponding to the angle A is B. According to the sine theorem, sin(A / 2) = B / (2R). Since the radius R is known, the corresponding chord length B is measured by dial indicator 92, allowing us to calculate the angle value of A / 2, and then the value of the angle A. When the angle A is less than 90 degrees, the sine function gradually increases within the range of 0 to 90 degrees. Therefore, by measuring the value with dial indicator 92 and converting it to the corresponding angle, if the angle is less than 0.2 degrees, the angle of pulley axle 5 is acceptable. Here, an angle less than 0.2 degrees corresponds to a chord length B. By judging the value of dial indicator 92, we can quickly confirm whether the angle of pulley axle 5 is acceptable.

[0027] By setting an anti-tilt sleeve 4, the measuring lever 91 and the pulley shaft 5 are vertically limited, thus improving the concentricity of the pulley shaft 5. By setting a clearance slot 41, the measuring lever 91 can easily extend from the anti-tilt sleeve 4, allowing it to fit snugly against the dial indicator 92, enabling the dial indicator 92 to measure the angle of rotation of the measuring lever 91. By setting a limiting seat 93, the limiting member 99 is easily installed; the limiting member 99 is threadedly connected to the limiting seat 93, thus positioning the measuring lever 91 in its initial position. By setting a tightening device 95, the corresponding torsional force of the measuring lever 91 can be easily set. By setting a mounting hole 96 and an adjustable opening 97, different models of dial indicators 92 can be easily fixed on the adjustable mounting base 94. In the initial state, the spring 952 is compressed, so the end of the ejector pin 953 abuts against the measuring lever 91. By adjusting the rotational position of the adjusting screw 954 and the hollow threaded sleeve 951, the initial compression of the spring 952 can be adjusted, thus regulating the extrusion force of the ejector pin 953. Since the final detection angle of angle A is very small, the initial position of the measuring lever 91 is limited by the limiting member 99 and the tightening device 95 to prevent frequent fluctuations in the dial indicator 92. In the default state, the ejector pin 953 presses against the measuring lever 91, causing the measuring lever 91 to abut against the limiting member 99. At this time, the vertical pin 12 abuts against the second contact part 54 of the pulley shaft 5. When angle A needs to be measured, the operator forcefully moves the measuring lever 91 and then reads the change in the dial indicator 92 to determine whether angle A is qualified. To make the value of the measuring lever 91 more accurate, the operator often uses a torque wrench to move the measuring lever 91; here, the torque applied to the measuring lever 91 is 30 N*M.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A device for rapid detection of the corner angle of a golf course, comprising a main frame (1), an upper center (2), and a lower center (3), characterized in that, The lower center (3) is installed at the bottom of the main frame (1), and the upper center (2) is installed at the top of the main frame (1) and can move relative to the lower center (3); the outer layer of the lower center (3) is provided with an anti-tilt seat (4), and a pulley shaft (5) for detection is provided between the upper center (2) and the lower center (3). A support plate (6) for positioning the pulley shaft (5) is provided between the main frame (1) and the pulley shaft (5). A pressure plate (7) is provided above the support plate (6), and a clamping assembly (8) for fixing the pressure plate (7) is provided on the main frame (1); a detection assembly (9) is provided on the side of the anti-tilt seat (4), and the detection assembly (9) includes a measuring lever (91) and a dial indicator (92); the measuring lever (91) is installed on the outer layer of the pulley shaft (5) and can rotate synchronously with the pulley shaft (5), and the dial indicator (92) is arranged adjacent to the end face of the measuring lever (91).

2. The rapid detection device for the corner of a golf course according to claim 1, characterized in that, The main frame (1) includes a main base (101), a column (102) and a cross arm (103). The column (102) is fixedly installed on the main base (101), and the cross arm (103) is fixedly installed on the column (102). A reinforcing rib (104) is provided between the column (102) and the cross arm (103). A bushing (105) is installed on the cross arm (103), and an upper center (2) is inserted inside the bushing (105). The bottom of the upper center (2) is set towards the pulley shaft (5). A support plate (6) is provided on the column (102) and rotates therewith.

3. The rapid detection device for the corner angle of a golf course according to claim 2, characterized in that, The column (102) is provided with a hollow mounting part (106), and a support plate (6) is installed inside the hollow mounting part (106). A pin (10) is provided between the support plate (6) and the column (102) to connect the two. The pin (10) is provided through the support plate (6) and the column (102). The support plate (6) is provided with a waist-shaped hole (107) for inserting the pin (10). The outline of the waist-shaped hole (107) is adapted to the outer diameter of the pin (10). (6) is provided with a pressure plate (7) above it, and a support part (61) is provided on the support plate (6). The bottom of the pressure plate (7) is provided with an arc placement part (71). The arc placement part (71) is fitted to the support part (61), and the outer contours of the arc placement part (71) and the support part (61) are compatible with each other. A first fastener (11) is installed on the cross arm (103). The first fastener (11) passes through the cross arm (103) and extends into the bushing (105).

4. The rapid detection device for the corner angle of a golf course according to claim 1, characterized in that, The pressure plate (7) has a pair of clamping components (8) on both sides, and the clamping components (8) are fixedly installed at the bottom of the main frame (1); the clamping components (8) include a mounting base (81), a clamping cylinder (82) and a clamping foot (83); the mounting base (81) is fixed to the main frame (1) by screws, and a flat key (84) for limiting is provided between the mounting base (81) and the main frame (1); a clamping cylinder is fixedly installed on the mounting base (81). The cylinder (82) has a first connecting rod (85) hinged to the cylinder body and a second connecting rod (86) hinged to the piston rod of the cylinder (82). The first connecting rod (85) and the second connecting rod (86) are hinged to each other, and a pressure foot (83) is fixedly installed at the end of the second connecting rod (86). When the piston rod of the cylinder (82) extends, the lower end face of the pressure foot (83) is attached to the upper end face of the pressure plate (7).

5. The rapid detection device for the corner angle of a golf course according to claim 1, characterized in that, The pulley shaft (5) has a convex disc (51) in the middle, and the support plate (6) has a support part (61). The outer contour of the support part (61) matches the outer contour of the convex disc (51). A pressure plate (7) is sleeved on the outer side of the pulley shaft (5), and the pulley shaft (5) can rotate relative to the pressure plate (7). A vertical pin (12) for positioning detection is provided between the pressure plate (7) and the pulley shaft (5). The pressure plate (7) has a first ball track (72), and the pulley shaft (5) has a second ball track (52). The first ball track (72) and the second ball track (52) surround and form a structure for... A placement channel for placing vertical pins (12) is provided, the outer contour of which is adapted to the outer contour of vertical pins (12); the vertical pins (12) are fitted to the inner wall of the first ball track (72), and there is a detection gap between the vertical pins (12) and the inner wall of the second ball track (52); the bottom of the vertical pins (12) is installed on the arc-shaped inner wall of the second ball track (52); the left and right sides of the second ball track (52) are respectively provided with a first contact part (53) and a second contact part (54) symmetrically arranged; in the default state, the vertical pins (12) are fitted to the second contact parts (54).

6. The rapid detection device for the corner of a golf course according to claim 1, characterized in that, The lower center (3) is fixedly installed on the main frame (1), and an anti-tilt seat (4) is fixedly installed on the outer layer of the lower center (3); the bottom inner hole of the pulley shaft (5) is installed on the lower center (3), and the lower end face of the pulley shaft (5) is installed on the bottom of the anti-tilt seat (4); a measuring lever (91) is sleeved on the outer layer of the pulley shaft (5), the measuring lever (91) is rigidly connected to the pulley shaft (5) and the two can rotate synchronously; a second fastener (13) is provided between the measuring lever (91) and the anti-tilt seat (4), and a clearance opening groove (41) is provided on the side wall of the anti-tilt seat (4), and the measuring lever (91) passes through the clearance opening groove (41) and extends radially along the pulley shaft (5).

7. The rapid detection device for the corner angle of a golf course according to claim 6, characterized in that, The main frame (1) is provided with a detection component (9) at the end facing the anti-tilt seat (4). The detection component (9) also includes a limit seat (93) and an adjustable mounting seat (94). The limit seat (93) and the adjustable mounting seat (94) are symmetrically arranged on both sides of the pulley shaft (5). The limit seat (93) is equipped with a limit member (99). The adjustable mounting seat (94) is provided with a dial indicator (92) and a tightening device (95). The tightening device (95) and the limit member (99) are respectively arranged on both sides of the measuring lever (91).

8. The rapid detection device for the corner of a golf course according to claim 7, characterized in that, The measuring lever (91) includes a bushing body (911) and a long rod (912), which are integrally formed. The bushing body (911) is fitted onto the outer layer of the pulley shaft (5), and the long rod (912) is positioned between the limiting seat (93) and the adjustable mounting seat (94). The adjustable mounting seat (94) is provided with a mounting hole (96), and a dial indicator (92) is provided inside the mounting hole (96). The adjustable mounting seat (94) is also provided with an adjustable opening (97) that communicates with the mounting hole (96). A third fastener (98) for fixing the dial indicator (92) and the adjustable mounting seat (94) is provided between them, and the third fastener (98) passes through the adjustable opening (97). In the default state, the probe of the dial indicator (92) is fitted against the right side of the long rod (912).

9. The rapid detection device for the corner angle of a golf course according to claim 7, characterized in that, The limiting member (99) is threadedly connected to the limiting seat (93); the limiting member (99) is positioned toward the tightening device (95), the tightening device (95) includes a hollow threaded sleeve (951), a spring (952), a pin (953), and an adjusting screw (954); the hollow threaded sleeve (951) is fixedly mounted on the adjustable mounting base (94), and the hollow threaded sleeve (951) is provided with a pin (953) that can extend and retract relative to it; the end of the hollow threaded sleeve (951) is provided with an adjusting screw (954) threadedly connected to it, the adjusting screw (954) 54) A spring (952) is provided between the ejector pin (953); a first step (955) is provided inside the hollow screw sleeve (951), and an annular protrusion (956) is provided on the ejector pin (953). The first step (955) and the annular protrusion (956) are arranged adjacent to each other; one end of the spring (952) abuts against the annular protrusion (956), and the other end of the spring (952) abuts against the adjusting screw (954); in the default state, the spring (952) is in a compressed state, and the ejector pin (953) is fitted with the measuring lever (91).

10. The rapid detection device for the corner angle of a golf course according to claim 9, characterized in that, The measuring lever (91) includes a bushing body (911) and a long rod (912). The long rod (912) is fitted with a dial indicator (92). The rotation measurement diameter of the long rod (912) and the dial indicator (92) is greater than or equal to 250 mm. The rotation measurement range of the long rod (912) is less than 0.2 degrees.

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