Jumping detection system

Abstract

The invention relates to the technical field of run-out detection, and particularly discloses a run-out detection system comprising a detection mechanism which comprises a three-jaw chuck, a transverse driving member and a dial indicator; the feeding mechanism comprises a power telescopic part and a placement table, the placement table is fixedly connected to the movable end of the power telescopic part, and a through hole allowing the three-jaw chuck to penetrate through is formed in the placement table; the cleaning mechanism comprises a fan, a cleaning pipe and a rotating assembly, the cleaning pipe comprises an annular pipe and a strip-shaped pipe, the annular pipe is rotationally arranged and communicates with the fan, the strip-shaped pipe is arranged on the annular pipe and communicates with the interior of the annular pipe, and the rotating assembly is arranged on one side of the annular pipe and used for driving the annular pipe to rotate. According to the invention, the brake drum before detection can be cleaned so as to weaken the adverse effect of dust on the detection result; and sliding of the placement table can drive the annular pipe to rotate, and rotation of the annular pipe does not need other power sources, so that more energy is saved, and cost reduction is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of jitter detection, and in particular to a jitter detection system. Background Art

[0002] In the field of mechanical processing, the runout detection of shaft parts is a key step to ensure product quality. Runout detection is a geometric tolerance measurement method used to evaluate the deviation of rotating parts from their ideal rotation axis during rotation. Usually, runout detection refers to measuring the radial circular runout of a part, which involves the difference between the maximum and minimum readings measured by a fixed indicator in a given direction during one rotation of the part.

[0003] For example, after the production of the vehicle's brake drum is completed, the outer surface of the brake drum needs to be tested for runout to determine whether the product meets the requirements. Testing includes random inspection and full inspection. Full inspection refers to the inspection of every product leaving the factory. During the inspection, the brake drum needs to be placed on a rotating workbench, and then the detection head of the micrometer is pressed against the outer surface of the brake drum. Then the brake drum is rotated so that the detection head of the micrometer rotates one circle relative to the brake drum, and the maximum and minimum values ​​on the micrometer are recorded. The difference between the maximum and minimum values ​​is the radial runout.

[0004] During the detection process, dust attached to the surface of the brake drum can easily affect the contact between the detection head of the micrometer and the brake drum surface, affecting the accuracy of the measurement results. Therefore, a device that can reduce the impact of dust on the detection process is needed. Summary of the invention

[0005] In order to facilitate the cleaning of the brake drum before testing and reduce the adverse effects of dust on the test results, the present application provides a runout detection system.

[0006] The present application provides a vibration detection system that adopts the following technical solution: A vibration detection system comprises a workbench and a detection mechanism, a feeding mechanism and a cleaning mechanism arranged on the workbench; The detection mechanism includes a three-jaw chuck, a transverse driving member, a bearing plate and a micrometer. The three-jaw chuck is vertically and rotatably arranged on a workbench, and is used to clamp a workpiece to be tested. The length direction of the transverse driving member is arranged along the radial direction of the three-jaw chuck. The bearing plate is fixedly connected to the movable end of the transverse driving member. The micrometer is arranged on the bearing plate, so that the transverse driving member can drive the micrometer to move and make the detection head of the micrometer press against the workpiece. The feeding mechanism comprises a power telescopic member and a placement table, wherein the power telescopic member is vertically arranged, the placement table is fixedly connected to the movable end of the power telescopic member, a through hole for the three-jaw chuck to pass through is opened on the placement table, and the top surface of the placement table is used to place the workpiece; The cleaning mechanism includes a fan, an air intake ring, a cleaning pipe and a rotating assembly. The fan and the air intake ring are fixedly arranged on a placement table. The air outlet of the fan is connected to the air intake ring. The cleaning pipe includes an annular pipe and a strip pipe. The annular pipe is rotatably connected to the air intake ring and is connected to the inside of the air intake ring. The strip pipe is arranged on the annular pipe and is connected to the inside of the annular pipe. An exhaust port is opened on the strip pipe. The rotating assembly is arranged on one side of the annular pipe for driving the annular pipe to rotate.

[0007] By adopting the above technical solution, before testing, the brake drum to be tested can be placed on the top surface of the placement table, and then the rotating cleaning pipe can be used to blow and clean the outer surface of the brake drum, which can blow off the dust on the outer surface of the brake drum, helping to reduce the impact of dust on subsequent testing.

[0008] Optionally, the rotating assembly includes a transmission screw, a driving gear and a driven gear ring, the transmission screw is vertically arranged, the transmission screw is fixedly connected to the workbench, a protrusion is provided on the placement table, the driving gear is rotatably connected to the protrusion, the driven gear ring is coaxially fixedly connected to the annular tube, the driven gear ring is meshed with the driving gear, and the driving gear is threadedly connected to the transmission screw, so that the driving gear can be driven to rotate when the placement table is raised or lowered.

[0009] By adopting the above technical solution, when the placement table slides vertically, the driving gear can slide along with it. Since the thread on the transmission screw does not have a self-locking ability, the driving gear can also rotate around its own axis when it slides vertically under the action of the thread cooperation between the driving gear and the transmission screw, thereby causing the driven gear ring to rotate, and the driven gear ring drives the annular tube to rotate, and the annular tube drives the strip tube to rotate, thereby expanding the jet blowing range and helping to enhance the cleaning effect; on the one hand, the power telescopic member drives the placement table to rise and fall to realize the loading of the brake drum, and on the other hand, it can drive the annular tube to rotate, that is, the rotation of the annular tube does not require the provision of other power sources, so it is more energy-saving and helps to reduce costs.

[0010] Optionally, a cleaning brush is provided on the annular tube, the cleaning brush includes a brush plate and bristles, the brush plate is fixedly connected to the annular tube, the brush plate is vertically arranged, the bristles are fixedly arranged on the brush plate, and the bristles are used to abut against the workpiece to be inspected.

[0011] By adopting the above technical solution, the annular tube can drive the cleaning brush to rotate when it rotates, and the bristles pressed against the surface of the brake drum can clean the surface of the brake drum, which helps to further enhance the cleaning effect.

[0012] Optionally, a plurality of the air outlets are spaced apart along the length direction of the strip tube, an exhaust pipe is connected to the air outlet of the strip tube, and an outlet of the exhaust pipe faces the bristles.

[0013] By adopting the above technical solution, the wind blown out from the exhaust pipe can clean the surface of the brake drum on the one hand, and clean the bristles on the other hand, thereby reducing dust adhering to the bristles and helping to ensure the cleaning effect of the cleaning brush.

[0014] Optionally, the bottom end of the strip tube is rotatably connected to the annular tube, a torsion spring is connected between the strip tube and the annular tube, and a linkage assembly is provided on the placement table for driving the strip tube to intermittently rotate around its own axis, so that the strip tube can intermittently blow air toward the workpiece and bristles.

[0015] By adopting the above technical scheme, during the rotation of the annular tube, the linkage assembly can make the strip tube intermittently rotate. When the linkage assembly stops acting on the strip tube, the torsion spring can make the strip tube rotate in the opposite direction, so that the strip tube can intermittently reciprocate. This intermittent reciprocating swing allows the strip tube to clean both the brake drum and the bristles regardless of the length of the bristles. The strip tube will not only be able to clean the bristles or the brake drum due to the bristles being too long or too short. The device can be better adapted to brake drums of different diameters, and thus the device is more adaptable.

[0016] Optionally, the linkage assembly includes a transmission gear and a transmission gear ring, the transmission gear is coaxially fixedly connected to the bar tube, the transmission gear ring is fixedly connected to the placement table, the transmission gear ring is coaxially arranged on the outer side of the annular tube, the transmission gear ring is used to mesh with the transmission gear, and the teeth on the transmission gear ring are provided with multiple sections and arranged in a circular array.

[0017] By adopting the above technical solution, when the annular tube drives the strip tube to rotate, the strip tube can drive the transmission gear to rotate. When the transmission gear is engaged with the transmission gear ring, the transmission gear can rotate on its own, thereby causing the strip tube to rotate on its own, thereby realizing intermittent swing of the strip tube.

[0018] Optionally, a dust cover and a dust suction pump are arranged on the outer side of the annular tube on the placement table, a cavity connected to the suction port of the dust suction pump is arranged inside the dust cover, and a dust suction port is arranged on the inner side of the dust cover.

[0019] By adopting the above technical solution, it is convenient to collect the cleaned dust, which can reduce the diffusion of dust and help ensure the cleanliness of the working environment.

[0020] Optionally, a mounting plate is slidably provided on the supporting plate in a vertical direction, the micrometer is provided on the mounting plate, and a first driving component for driving the mounting plate to slide is provided on the supporting plate.

[0021] By adopting the above technical solution, the installation height of the micrometer can be adjusted, so that the device can be suitable for brake drums of different lengths, and the device has stronger applicability.

[0022] Optionally, three mounting beams are provided on the mounting plate, and the mounting beams are arranged at intervals in the vertical direction. Three micrometers are provided and correspond to the three mounting beams respectively, and each of the micrometers is fixedly connected to the corresponding mounting beam.

[0023] By adopting the above technical solution, it is possible to simultaneously detect three positions on the same brake drum, which helps to improve detection efficiency.

[0024] Optionally, one of the mounting beams is fixedly connected to the mounting plate, and the other two mounting beams are respectively located on the upper and lower sides and are both slidably arranged in the vertical direction. A second driving component for driving the upper and lower mounting beams to slide is arranged on the mounting plate.

[0025] By adopting the above technical solution, the position of the micrometer can be further adjusted, which can enhance the applicability of the device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Before the runout test, the brake drum can be placed on the placement table, and then the cleaning tube can be used to blow the surface of the brake drum with air, thereby cleaning the brake drum and reducing the impact of dust on the accuracy of subsequent tests.

[0027] 2. When the placement table slides, the annular tube can rotate, thereby causing the annular tube to drive the strip tube to rotate, thereby realizing rotary blowing of the brake drum; the annular tube can rotate as the placement table slides, without the need to set up an additional power source, thus being more energy-efficient.

[0028] 3. When the annular tube rotates, the strip tube can swing intermittently, so that the strip tube can not only blow the brake drum but also blow the bristles, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 is a structural schematic diagram of another viewing angle of Example 1 of the present application; Figure 3 is a cross-sectional view of Example 1 of the present application along the length direction of the workbench; Figure 4 is a cross-sectional view of Example 1 of the present application along the width direction of the workbench; Figure 5 It is a schematic diagram of the structure in the detection state after the placement table in Example 1 of the present application moves downward; Figure 6 This is a schematic diagram of the structure of the linkage component used to demonstrate the embodiment 2 of the present application; Figure 7 It is a cross-sectional view of Example 2 of the present application for displaying the linkage assembly.

[0030] Figure numerals: 1, workbench; 11, mounting groove; 2, detection mechanism; 21, three-jaw chuck; 22, horizontal driving member; 23, bearing plate; 231, first vertical guide rail; 232, avoidance hole; 24, micrometer; 3, feeding mechanism; 31, power telescopic member; 32, placing table; 321, perforation; 322, bump; 323, guide rod; 4, cleaning mechanism; 41, fan; 42, air intake ring; 43, cleaning pipe; 431, annular pipe; 432, strip pipe; 4321, row Air duct; 44, rotating assembly; 441, transmission screw; 442, driving gear; 443, driven gear ring; 5, cleaning brush; 51, brush plate; 52, bristles; 6, torsion spring; 7, linkage assembly; 71, transmission gear; 72, transmission gear ring; 8, dust cover; 81, dust suction port; 9, dust suction pump; 10, mounting plate; 101, second vertical guide rail; 12, first drive assembly; 13, mounting beam; 14, second drive assembly; 15, transverse guide rail; 16, support block; 17, brake drum. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-7 This application is described in further detail.

[0032] Example 1 The present application embodiment discloses a vibration detection system. Figure 1 The beating detection system comprises a workbench 1, a detection mechanism 2, a feeding mechanism 3 and a cleaning mechanism 4. The workbench 1 has a horizontal surface, and the detection mechanism 2 is arranged on the top surface of the workbench 1.

[0033] Reference Figure 1 and Figure 2The detection mechanism 2 includes a three-jaw chuck 21, a transverse driving member 22, a bearing plate 23 and a micrometer 24. The axis of the three-jaw chuck 21 is vertical, and the three-jaw chuck 21 is rotatably arranged on the workbench 1; a motor for driving the three-jaw chuck 21 to rotate is arranged on the workbench 1; the three movable jaws of the three-jaw chuck 21 expand outward, so that the jaws can be pressed against the inner wall of the brake drum 17, thereby fixing the brake drum 17 on the three-jaw chuck 21. The transverse driving member 22 includes a screw and a motor. The screw is arranged along the length direction of the workbench 1, and the screw is rotatably arranged on the workbench 1; the motor is fixedly connected to the workbench 1, and the output shaft of the motor and the screw are coaxially fixedly connected. The top surface of the workbench 1 is also fixedly connected with a transverse guide rail 15 along its own length direction, and the bearing plate 23 is slidably arranged on the transverse guide rail 15; the bearing plate 23 is threadedly connected to the screw, so that the motor drives the screw to rotate to make the bearing plate 23 slide horizontally. The micrometer 24 is disposed on the bearing plate 23 , and when the bearing plate 23 slides, the micrometer 24 is driven to slide until the detection head of the micrometer 24 is pressed against the outer surface of the brake drum 17 , and then the runout detection can be performed.

[0034] The micrometer 24 is electrically connected to the data acquisition system, so the data detected by the micrometer 24 can be transmitted to the data acquisition system in a timely manner, thereby facilitating subsequent analysis.

[0035] Furthermore, a first vertical guide rail 231 is fixedly connected to the bearing plate 23 in the vertical direction, and a mounting plate 10 is slidably arranged on the first vertical guide rail 231. A first driving assembly 12 for driving the mounting plate 10 to slide is arranged on the bearing plate 23, and the first driving assembly 12 includes a first screw and a motor. The axis of the first screw is vertical, and the first screw is rotatably arranged on the bearing plate 23; the motor is fixedly connected to the bearing plate 23, and the output shaft of the motor and the first screw are coaxially fixedly connected; a mounting block is fixedly connected to the mounting plate 10, and a vertically arranged avoidance hole 232 is provided on the bearing plate 23, and the mounting block is slidably arranged in the avoidance hole 232; the mounting block is threadedly connected to the first screw. Therefore, the motor drives the first screw to rotate to make the mounting plate 10 slide.

[0036] The mounting plate 10 is provided with three mounting beams 13, which are arranged at intervals in the vertical direction. Three micrometers 24 are also provided, which are respectively fixedly connected to the ends of the three mounting beams 13. Therefore, the radial runout detection of three positions can be completed at one time, which helps to improve the detection efficiency.

[0037] Among them, a mounting beam 13 located in the middle is fixedly connected to the mounting plate 10; the top and bottom mounting beams 13 are both slidably arranged on the mounting plate 10 in the vertical direction, and the mounting plate 10 is fixedly connected with a second vertical guide rail 101 for the two mounting beams 13 to slide. The mounting plate 10 is provided with a second driving assembly 14 for driving the two mounting beams 13 to slide, and the second driving assembly 14 includes a second screw and a motor. The second screw is vertically arranged, and the second screw is rotatably arranged on the mounting plate 10; the motor is fixedly connected to the mounting plate 10, and the output shaft of the motor is coaxially fixedly connected with the second screw; the top and bottom mounting beams 13 are both threadedly connected with the second screw, so that the motor drives the second screw to rotate to make the upper and lower mounting beams 13 slide synchronously, thereby realizing the detection of different positions.

[0038] Reference Figure 3 , a mounting groove 11 is provided on the workbench 1, and a feeding mechanism 3 is provided in the mounting groove 11. The feeding mechanism 3 includes a power telescopic member 31 and a placement table 32. The power telescopic member 31 is a cylinder, and may also be an electric push rod in other embodiments; the power telescopic member 31 is vertically arranged, and the fixed end of the power telescopic member 31 is fixedly connected to the bottom wall of the mounting groove 11, and the piston rod end of the power telescopic member 31 is vertically upward and fixedly connected to the bottom wall of the placement table 32. The table surface of the placement table 32 is horizontal, and a through hole 321 is provided on the placement table 32 for the three-jaw chuck 21 to pass through. A vertical guide rod 323 is fixedly connected to the bottom wall of the placement table 32, and the guide rod 323 is slidably penetrated on the bottom wall of the mounting groove 11, thereby improving the stability of the placement table 32 during the sliding process.

[0039] During operation, the brake drum 17 is placed on the top surface of the placement platform 32, and the power telescopic member 31 causes the placement platform 32 to rise upward, and then the three movable claws of the three-jaw chuck 21 slide toward the side away from each other until the three movable claws are pressed against the inner wall of the brake drum 17, thereby fixing the brake drum 17 on the three-jaw chuck 21. Figure 5 Then the power telescopic member 31 moves the placement platform 32 downward, so that the placement platform 32 moves to the installation groove 11 below, which can avoid the collision between the brake drum 17 and the inner wall of the perforation 321 of the placement platform 32 when rotating during the subsequent detection process, which helps the smooth progress of the detection process.

[0040] Reference Figure 2 , Figure 3 and Figure 4The cleaning mechanism 4 includes a fan 41, an air intake ring 42, a cleaning pipe 43 and a rotating assembly 44. The fan 41 and the air intake ring 42 are both fixedly connected to the top surface of the placement table 32, and the axis of the air intake ring 42 is vertical. A cavity for air flow is provided inside the air intake ring 42, and the cavity inside the air intake ring 42 is connected to the air outlet of the fan 41. The cleaning pipe 43 includes an annular pipe 431 and a strip pipe 432. The annular pipe 431 is coaxially arranged above the air intake ring 42, and the bottom end of the annular pipe 431 and the top end of the air intake ring 42 are rotatably connected. The bottom end of the annular pipe 431 is open, and the top end of the air intake ring 42 is open, so the annular pipe 431 and the air intake ring 42 are connected. There are multiple strip tubes 432 arranged in a circular array, and the strip tubes 432 are arranged vertically; the bottom end of the strip tube 432 is fixedly connected to the top wall of the annular tube 431, and the strip tube 432 and the annular tube 431 are connected. There are multiple exhaust ports evenly spaced in the vertical direction on the strip tube 432, and each exhaust port is fixedly connected to an exhaust pipe 4321. Therefore, the wind blown by the fan 41 can enter the air intake ring 42, the annular tube 431 and the strip tube 432 in turn, and then be discharged from the exhaust pipe 4321 on the strip tube 432, so as to sweep the outer surface of the brake drum 17 placed on the placement table 32, blow off the dust, and reduce the impact of the dust on the subsequent detection process.

[0041] Reference Figure 2 and Figure 4 , the rotating assembly 44 is used to drive the annular tube 431 to rotate, thereby expanding the cleaning range of the purge. The rotating assembly 44 includes a transmission screw 441, a driving gear 442 and a driven gear ring 443. The transmission screw 441 is vertically arranged, and the bottom end of the transmission screw 441 is fixedly connected to the bottom wall of the mounting groove 11, and the transmission screw 441 is located on the outside of the placement platform 32; the thread lead angle of the transmission screw 441 is greater than the equivalent friction angle, so the thread on the transmission screw 441 does not have self-locking ability. A protrusion 322 is welded on one side of the placement platform 32, the axis of the driving gear 442 is vertical, and the driving gear 442 is rotatably connected to the top surface of the protrusion 322. A rotating ring is coaxially fixedly connected to the bottom wall of the driving gear 442, and correspondingly, an annular groove is opened on the top wall of the protrusion 322, and the rotating ring is rotatably arranged in the annular groove, so that the driving gear 442 and the protrusion 322 are rotatably connected. The projection 322 is provided with a mounting hole for the transmission screw 441 to pass through, and the driving gear 442 is coaxially provided with a threaded hole, and the driving gear 442 is threadedly connected to the transmission screw 441. Under the effect of the threaded connection between the transmission screw 441 and the driving gear 442, the driving gear 442 can rotate while sliding vertically.

[0042] The driven gear ring 443 is coaxially fixedly connected to the outer wall of the annular tube 431, and the driven gear ring 443 is meshed with the driving gear 442. Therefore, when the placement platform 32 rises or falls in the vertical direction, it can drive the driving gear 442 to slide; the driving gear 442 rotates while sliding, and the driving gear 442 drives the driven gear ring 443 to rotate, the driven gear ring 443 drives the annular tube 431 to rotate, and the annular tube 431 drives the strip tube 432 to rotate, thereby expanding the purging area and helping to enhance the purging effect.

[0043] Reference Figure 4 Furthermore, a cleaning brush 5 is also provided on the annular tube 431, and the number of the cleaning brushes 5 is the same as the number of the strip tubes 432, and each cleaning brush 5 corresponds to a strip tube 432. The cleaning brush 5 includes a brush plate 51 fixedly connected to the annular tube 431 and bristles 52 fixedly connected to the brush plate 51, and the bristles 52 are flexibly arranged. The brush plate 51 is arranged vertically, and the side of the bristles 52 away from the brush plate 51 is used to abut against the outer surface of the brake drum 17. Therefore, when the annular tube 431 rotates, the cleaning brush 5 can be driven to rotate, so that the surface of the brake drum 17 is cleaned by the bristles 52, which can further enhance the cleaning effect. In addition, the brush plate 51 and the annular tube 431 are detachably connected, so that cleaning brushes 5 of different sizes can be replaced as needed.

[0044] Among them, the exhaust pipe 4321 and the brush plate 51 are both arranged along the radial direction of the annular pipe 431, so that the wind blown out by the exhaust pipe 4321 can not only blow and clean the surface of the brake drum 17, but also blow and clean the bristles 52 on the brush plate 51, thereby realizing self-cleaning of the bristles 52 and helping to ensure the cleaning effect of the bristles 52.

[0045] Reference Figure 3 In order to facilitate the collection of the dust after cleaning and reduce the diffusion of dust, a dust cover 8 is also provided on the top surface of the placement table 32, and the bottom end of the dust cover 8 and the top wall of the placement table 32 are fixedly connected by a support plate. The dust cover 8 is sleeved on the outside of the annular tube 431 and the strip tube 432. A cavity is provided inside the dust cover 8; a dust suction pump 9 is fixedly connected to the placement table 32, and the suction port of the dust suction pump 9 is connected to the cavity inside the dust cover 8. A plurality of dust suction ports 81 are provided on the inner wall of the dust cover 8, so that after the dust suction pump 9 is turned on, dust can be sucked in through the dust suction ports 81, thereby realizing the collection of dust.

[0046] The implementation principle of Example 1 is as follows: in the initial state, the placement table 32 is located below the three-jaw chuck 21. During testing, the brake drum 17 to be tested is first placed on the top surface of the placement table 32. Then the fan 41 is started, and the wind blown by the fan 41 can flow into the air intake ring 42, the annular pipe 431 and the strip pipe 432 in sequence, and then be discharged from the exhaust pipe 4321 on the strip pipe 432, so as to achieve the cleaning of the surface of the brake drum 17.

[0047] Then the power telescopic member 31 causes the placement platform 32 to slide upward, which is convenient for the subsequent loading and clamping of the brake drum 17. During the upward sliding of the placement platform 32, the driving gear 442 can be rotated, and the driving gear 442 drives the driven gear ring 443 to rotate, and the driven gear ring 443 drives the annular tube 431 to rotate; the rotation of the annular tube 431 can drive the cleaning brush 5 to rotate, thereby achieving contact cleaning of the surface of the brake drum 17 through the bristles 52; the rotation of the annular tube 431 can also drive the strip tube 432 to rotate, thereby expanding the sweeping range and enhancing the cleaning effect. At the same time, the blown dust can enter the dust cover 8 through the dust suction port 81, and then be sucked into the dust suction pump 9 for collection.

[0048] When the placement table 32 moves to the height of the three-jaw chuck 21, the brake drum 17 is located outside the three-jaw chuck 21. At this time, the three movable claws of the three-jaw chuck 21 expand outward until the three claws are tightly against the inner wall of the brake drum 17, and the brake drum 17 is fixedly clamped on the three-jaw chuck 21. Then the power telescopic member 31 drives the placement table 32 to slide downward. When the placement table 32 slides down, the annular tube 431 and the brush plate 51 can slide down with it. At this time, the wind blown out from the exhaust pipe 4321 can directly blow to the bristles 52, thereby realizing self-cleaning of the bristles 52, which is convenient for ensuring the subsequent cleaning effect.

[0049] Then, the height of the dial gauge 24 is adjusted by the first drive assembly 12 and the second drive assembly 14, and the dial gauge 24 is adjusted to the desired height. Then, the transverse drive member 22 causes the dial gauge 24 to slide toward the side close to the brake drum 17 until the detection head of the dial gauge 24 is pressed against the outer surface of the brake drum 17. Then, the three-jaw chuck 21 drives the brake drum 17 to rotate, so that relative sliding occurs between the detection head of the dial gauge 24 and the brake drum 17. When the brake drum 17 rotates one circle, the detection can be completed. According to the recorded data, the difference between the maximum and minimum indications of the dial gauge 24 can be calculated to obtain the radial runout at the corresponding position.

[0050] Example 2 Reference Figure 6 and Figure 7 The difference between this embodiment and embodiment 1 is that the bottom end of the strip tube 432 in this embodiment is inserted into the annular tube 431, and the bottom end of the strip tube 432 and the top end of the annular tube 431 are rotatably connected. The outer side of the strip tube 432 is sleeved with a torsion spring 6, which is connected between the strip tube 432 and the annular tube 431. Under normal conditions, the torsion spring 6 is in an untwisted state. The placement table 32 is also provided with a linkage assembly 7 for driving the strip tube 432 to intermittently rotate around its own axis.

[0051] The linkage assembly 7 includes a transmission gear 71 and a transmission gear ring 72. The transmission gear 71 is coaxially fixedly connected to the strip tube 432, the transmission gear ring 72 and the annular tube 431 are coaxially arranged, the transmission gear ring 72 is fixedly connected to the placement table 32, and the transmission gear ring 72 and the placement table 32 are fixedly connected via a support block 16. The teeth on the inner side of the transmission gear ring 72 are provided with multiple sections and arranged in a circumferential array, and the transmission gear ring 72 is used to mesh with the transmission gear 71.

[0052] When the transmission gear 71 on the strip tube 432 is not meshed with the teeth on the inner side of the transmission gear ring 72, the strip tube 432 and the annular tube 431 are in a relatively static state. At this time, the exhaust pipe 4321 on the strip tube 432 is arranged along the radial direction of the annular tube 431, and can continuously blow air to clean the surface of the brake drum 17. When the annular tube 431 rotates, the strip tube 432 can be driven to rotate. When the transmission gear 71 on the strip tube 432 is meshed with the teeth on the inner side of the transmission gear ring 72, as the annular tube 431 rotates, the strip tube 432 will rotate around its own axis by a certain angle, and the strip tube 432 will rotate to the side close to the corresponding brush plate 51; when the transmission gear 71 is out of mesh with the transmission gear ring 72, the torsion spring 6 will make the strip tube 432 rotate in the opposite direction around its own axis, thereby realizing the reset of the strip tube 432. Because during the rotation of the annular tube 431, the strip tube 432 can perform continuous revolution and intermittent reciprocating swing; the revolution can expand the blowing range, and the reciprocating swing can make the exhaust pipe 4321 on the strip tube 432 both ensure the blowing effect on the brake drum 17 and the self-cleaning effect on the bristles 52, and thus it is more practical.

[0053] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A jitter detection system, characterized in that: It comprises a workbench (1), and a detection mechanism (2), a feeding mechanism (3) and a cleaning mechanism (4) arranged on the workbench (1); The detection mechanism (2) comprises a three-jaw chuck (21), a transverse driving member (22), a bearing plate (23) and a micrometer (24); the three-jaw chuck (21) is axially arranged on a workbench (1) and rotatably disposed for clamping a workpiece to be detected; the length direction of the transverse driving member (22) is arranged along the radial direction of the three-jaw chuck (21); the bearing plate (23) is fixedly connected to the movable end of the transverse driving member (22); and the micrometer (24) is arranged on the bearing plate (23) so that the transverse driving member (22) can drive the micrometer (24) to move and make the detection head of the micrometer (24) press against the workpiece; The feeding mechanism (3) comprises a power telescopic member (31) and a placement table (32), wherein the power telescopic member (31) is arranged vertically, and the placement table (32) is fixedly connected to the movable end of the power telescopic member (31), and a through hole (321) is provided on the placement table (32) for the three-jaw chuck (21) to pass through, and the top surface of the placement table (32) is used for placing a workpiece; The cleaning mechanism (4) comprises a fan (41), an air intake ring (42), a cleaning pipe (43) and a rotating assembly (44); the fan (41) and the air intake ring (42) are both fixedly arranged on a placement table (32); an air outlet of the fan (41) is connected to the air intake ring (42); the cleaning pipe (43) comprises an annular pipe (431) and a strip pipe (432); the annular pipe (431) is rotatably connected to the air intake ring (42) and is connected to the inside of the air intake ring (42); the strip pipe (432) is arranged on the annular pipe (431) and is connected to the inside of the annular pipe (431); an air outlet is provided on the strip pipe (432); and the rotating assembly (44) is arranged on one side of the annular pipe (431) and is used to drive the annular pipe (431) to rotate.

2. A jitter detection system according to claim 1, characterized in that: The rotating assembly (44) comprises a transmission screw (441), a driving gear (442) and a driven gear ring (443); the transmission screw (441) is arranged vertically and fixedly connected to the workbench (1); a protrusion (322) is arranged on the placement table (32); the driving gear (442) is rotationally connected to the protrusion (322); the driven gear ring (443) is coaxially fixedly connected to the annular tube (431); the driven gear ring (443) is meshed with the driving gear (442); the driving gear (442) is threadedly connected to the transmission screw (441), so that the driving gear (442) can be driven to rotate when the placement table (32) is raised or lowered.

3. A jitter detection system according to claim 1, characterized in that: A cleaning brush (5) is arranged on the annular tube (431), the cleaning brush (5) comprising a brush plate (51) and bristles (52), the brush plate (51) being fixedly connected to the annular tube (431), the brush plate (51) being arranged vertically, the bristles (52) being fixedly arranged on the brush plate (51), and the bristles (52) being used to abut against a workpiece to be inspected.

4. A jitter detection system according to claim 3, characterized in that: A plurality of the air outlets are arranged at intervals along the length direction of the strip tube (432); an air exhaust pipe (4321) is connected to the air outlet of the strip tube (432); and the outlet of the air exhaust pipe (4321) faces the bristles (52).

5. A jitter detection system according to claim 4, characterized in that: The bottom end of the strip tube (432) is rotatably connected to the annular tube (431), a torsion spring (6) is connected between the strip tube (432) and the annular tube (431), and a linkage assembly (7) is provided on the placement table (32) for driving the strip tube (432) to intermittently rotate around its own axis, so that the strip tube (432) can intermittently blow air toward the workpiece and the bristles (52).

6. A jitter detection system according to claim 5, characterized in that: The linkage assembly (7) comprises a transmission gear (71) and a transmission gear ring (72); the transmission gear (71) is coaxially fixedly connected to the strip tube (432); the transmission gear ring (72) is fixedly connected to the placement table (32); the transmission gear ring (72) is coaxially arranged on the outside of the annular tube (431); the transmission gear ring (72) is used to mesh with the transmission gear (71); the teeth on the transmission gear ring (72) are arranged in multiple sections and are arranged in a circular array.

7. A jitter detection system according to claim 1, characterized in that: A dust cover (8) and a dust suction pump (9) are arranged on the outside of the annular tube (431) on the placement table (32); a cavity connected to the suction port of the dust suction pump (9) is arranged inside the dust cover (8); and a dust suction port (81) is arranged inside the dust cover (8).

8. A jitter detection system according to claim 1, characterized in that: A mounting plate (10) is slidably arranged on the bearing plate (23) in a vertical direction, the micrometer (24) is arranged on the mounting plate (10), and a first driving component (12) for driving the mounting plate (10) to slide is arranged on the bearing plate (23).

9. A jitter detection system according to claim 8, characterized in that: Three mounting beams (13) are provided on the mounting plate (10), and the mounting beams (13) are arranged at intervals in the vertical direction. Three micrometers (24) are provided and correspond to the three mounting beams (13) respectively, and each micrometer (24) is fixedly connected to a corresponding mounting beam (13).

10. A jitter detection system according to claim 9, characterized in that: One of the mounting beams (13) is fixedly connected to the mounting plate (10), and the other two mounting beams (13) are respectively located at upper and lower sides and are both arranged to slide in a vertical direction. A second driving component (14) for driving the upper and lower mounting beams (13) to slide is arranged on the mounting plate (10).

Images