Balancing device for detecting balance degree of automobile center plate

Abstract

The invention discloses a balancing device for automobile center disc balance degree detection, and belongs to the field of automobile detection devices.The balancing device comprises a supporting cavity, center disc clamping cavities are symmetrically and rotationally connected to the upper surface of the supporting cavity, transmission teeth are fixedly connected to the outer side walls of the center disc clamping cavities, and a sliding groove is formed in the upper surface of the supporting cavity; a supporting sliding cavity is slidably connected into the sliding groove, and a first motor is fixedly connected to the upper surface of the supporting sliding cavity. According to the device, the linkage rotary column is driven to rotate through the third motor in the clamping cavity of the center disc, the supporting sliding column is forced to drive the supporting clamping ring to synchronously expand / contract through the spiral track of the angle groove, the device can automatically adapt to center discs with different inner diameters, and manual adjustment is not needed. After the supporting clamping ring is in complete contact with the center disc inner ring, the extrusion wedge pushes the contact wedge to overcome the pre-tightening force of the second spring to be contained in the clamping groove, and the friction force between the hollow disc and the inner wall of the hollow cavity disappears.

Description

Technical Field

[0001] The present invention relates to an automobile detection device, in particular to a balancing device for detecting the balance of an automobile center plate. Background Art

[0002] As a key connector between the wheel hub and the axle, the balance of the automotive center disc directly affects the stability and safety of vehicle driving. Traditional balance detection devices face many technical bottlenecks in practical applications: First, the center disc fixing structure often uses mechanical clamps or bolts for clamping, which requires manual adjustment to adapt to different inner diameter specifications. This is cumbersome and has low centering accuracy. It is also prone to deformation of the center disc due to uneven clamping force. Second, during the detection process, the vibration generated by rotation often causes the support frame to shift. Traditional limit structures have difficulty maintaining stability under dynamic conditions, resulting in deviations in detection data. Third, the transmission system often relies on fixed gear meshing, which cannot automatically adjust the meshing position according to the size of the center disc. It also lacks an overload protection mechanism, which can easily damage the inner ring of the center disc due to overpressure during clamping. Fourth, the height adjustment mechanism of the detection equipment is mostly manual knob-type, which makes it difficult to quickly match the detection requirements of different center disc models, resulting in low detection efficiency.

[0003] The above problems cause traditional devices to have defects such as insufficient accuracy, complex operation and serious equipment loss when testing center disks of multiple specifications. There is an urgent need for a new balancing device with adaptive adjustment, dynamic locking and overload protection functions. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to solve the problems of low centering accuracy and cumbersome operation of traditional devices when testing center disks of multiple specifications through an adaptive clamping structure and a dynamic locking mechanism; the present invention also has a purpose to avoid overpressure damage to the center disk during the testing process by integrating overload protection and modular adjustment functions, while improving the adaptability of the device to center disks of different sizes, shortening the testing adjustment time, and improving the overall testing efficiency, so as to provide a reliable automated solution for automobile wheel hub balance testing.

[0005] Technical solution: A balancing device for detecting the balance of a car's center disk, comprising a supporting cavity, the upper surface of the supporting cavity being symmetrically connected to a center disk clamping cavity in rotation, the outer side wall of the center disk clamping cavity being fixedly connected to a transmission tooth, the upper surface of the supporting cavity being provided with a slide groove, the interior of the slide groove being slidingly connected to a supporting slide cavity, the upper surface of the supporting slide cavity being fixedly connected to motor one, the output end of motor one being fixedly connected to a transmission gear, the outer side wall of the supporting slide cavity being provided with a threaded groove, the outer side wall of the supporting cavity being fixedly connected to motor two, the output end of motor two being fixedly connected to a threaded column, the threaded column extending through the left side of the inner side wall of the slide groove and being threadedly connected to the outer side wall of the threaded groove.

[0006] Furthermore, the outer wall of the support cavity is symmetrically provided with a limiting groove, the inner sliding connection of the limiting groove is provided with a sliding block, the outer wall of the sliding block is slidably connected to a support frame, the outer wall of the support frame is provided with a limiting hole, the inner sliding connection of the limiting hole is provided with a limiting rod, the outer wall of the limiting rod is symmetrically provided with multiple positioning holes, and the sliding block in front is fixedly connected to the support sliding cavity.

[0007] Furthermore, a circular groove is provided on the inner upper surface of the support frame, the inner rotation of the circular groove is connected to a limited circular cavity, a fixed column is fixedly connected between the limited circular cavity and the transmission gear, the outer side wall of the limiting rod is fixedly connected to a support rod, and the bottom end of the support rod is fixedly connected to the upper surface of the support cavity.

[0008] Furthermore, a spring groove is provided between the limiting hole and the circular groove, a locking column is slidably connected to the inside of the spring groove, a groove is provided on the outer wall of the locking column, a limiting ring is fixedly connected to the inside of the spring groove, a spring 1 is wound around the outer wall of the groove, one end of the spring 1 is fixedly connected to the limiting ring, and the other end of the spring 1 is fixedly connected to the groove, a plurality of oblique grooves are provided on the outer wall of the limiting circular cavity, and metal balls are rollingly connected to the inside of each of the oblique grooves.

[0009] Furthermore, the central disk clamping cavity includes a hollow cavity, the inner lower surface of the hollow cavity is fixedly connected to the motor three, the upper surface of the hollow cavity is fixedly connected to the hollow top cavity, the inner upper surface of the hollow top cavity is symmetrically provided with a plurality of transverse grooves, the inner part of the transverse groove is slidingly connected to a support slide column, and the outer side wall of the support slide column is symmetrically fixedly connected to a support clamping ring.

[0010] Furthermore, a turntable is rotatably connected to the interior of the hollow top cavity, and angle grooves are symmetrically provided on the upper surface of the turntable. The outer side walls of the supporting slides are slidably connected to adjacent angle grooves, and the bottom ends of the supporting slides are fixedly connected to limit plates.

[0011] Furthermore, a linkage rotating column is fixedly connected to the lower surface of the turntable, the bottom end of the linkage rotating column extends to the interior of the hollow cavity and is fixedly connected to a hollow disk, the hollow disk is rotatably connected to the inner upper surface of the hollow cavity, an empty groove is provided on the upper surface of the hollow disk, a card slot is symmetrically provided inside the empty groove, a contact wedge is slidably connected inside the card slot, and a second spring is fixedly connected between the contact wedge and the interior of the empty groove.

[0012] Furthermore, the bottom end of the linkage rotating column extends to the interior of the empty slot and is rotatably connected to the inner lower surface of the empty slot. The outer side wall of the linkage rotating column is symmetrically fixedly connected with an extrusion wedge block inside the empty slot.

[0013] Furthermore, a plurality of arc grooves are symmetrically opened inside the slide groove, a telescopic groove is opened at one end of the supporting slide cavity, an arc-shaped clamping block is slidably connected inside the telescopic groove, and the arc-shaped clamping block is directly fixedly connected to the telescopic groove with a spring three.

[0014] Beneficial effects:

[0015] The device rotates the three-motor linkage column in the center disk cavity, and uses the spiral trajectory of the angle slot to force the support slide column to drive the support clamp ring to expand / contract synchronously. It can automatically adapt to center disks with different inner diameters without manual adjustment. When the support clamp ring is in full contact with the inner ring of the center disk, the extrusion wedge pushes the contact wedge to overcome the preload force of spring two and retract into the slot, eliminating the friction between the hollow disk and the inner wall of the hollow cavity. The motor enters an idling state and forms an overload protection mechanism. This design controls the clamping force within a reasonable range, avoiding damage due to overpressure, and ensures a stable fixation through the elastic preload of spring two. It can withstand centrifugal forces at high speeds without displacement.

[0016] An inclined groove is provided on the outer wall of the limiting circular cavity within the support frame. When the motor starts and the transmission gear rotates, the metal ball in the inclined groove is subjected to centrifugal force and generates a tangential component along the inclination of the inclined groove. This pushes the locking column and simultaneously clamps the inclined groove of the limiting circular cavity and the inner wall of the limiting hole, forming a mechanical interlocking structure. This mechanism has speed-adaptive characteristics, effectively resists vibration interference during detection, and significantly improves accuracy compared to traditional rigid limiting structures.

[0017] Motor 2 drives the support slide cavity through a threaded column, allowing it to slide within the slot. When the arc-shaped block aligns with the slot, spring 3 pushes the block to position it, minimizing the meshing error between the transmission gear and the transmission teeth. Simultaneously, the limit rod, through the positioning hole within the limit hole, allows precise adjustment within a certain height range. Together with the support rod, this forms a stable triangular support structure suitable for testing center discs of varying thicknesses. This modular design significantly reduces adjustment time when switching between different center disc sizes, significantly improving testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Schematic diagram of the overall structure of the support frame of the present invention;

[0020] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 It is a schematic cross-sectional view of the limiting circular cavity of the present invention;

[0022] Figure 5It is a schematic cross-sectional view of the telescopic slot of the present invention;

[0023] Figure 6 It is a schematic cross-sectional view of the central disk card cavity of the present invention;

[0024] Figure 7 It is a schematic cross-sectional structural diagram of the hollow cavity of the present invention;

[0025] Figure 8 It is a schematic diagram of the overall structure of the transmission gear of the present invention.

[0026] Figure: 1, support cavity; 2, center disk cavity; 3, transmission gear; 4, slide; 5, support slide cavity; 6, motor 1; 7, transmission gear; 8, thread groove; 9, motor 2; 10, threaded column; 11, limit groove; 12, sliding block; 13, support frame; 14, limit hole; 15, limit rod; 16, positioning hole; 17, circular groove; 18, limit circular cavity; 19, fixing column; 20, support rod; 21, spring groove; 22, locking column; 23, groove; 24, limit ring; 25, spring 1; 2 6. Inclined slot; 27. Metal ball; 101. Hollow cavity; 102. Motor three; 103. Hollow top cavity; 104. Horizontal slot; 105. Support slide column; 106. Support clamp ring; 107. Turntable; 108. Angle slot; 110. Limit plate; 111. Linkage rotating column; 112. Hollow plate; 113. Empty slot; 114. Clamping slot; 115. Contact wedge; 116. Spring two; 117. Extrusion wedge; 28. Arc slot; 29. Telescopic slot; 30. Arc clamping block; 31. Spring three. DETAILED DESCRIPTION

[0027] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example:

[0029] like Figures 1-8As shown, a balancing device for detecting the balance degree of a center disk of an automobile is provided, comprising a supporting cavity 1, the upper surface of the supporting cavity 1 is symmetrically connected to a center disk clamping cavity 2 for rotation, the outer side wall of the center disk clamping cavity 2 is fixedly connected to a transmission gear 3, a sliding groove 4 is provided on the upper surface of the supporting cavity 1, the interior of the sliding groove 4 is slidingly connected to a supporting sliding cavity 5, the upper surface of the supporting sliding cavity 5 is fixedly connected to a motor 1 6, the output end of the motor 1 6 is fixedly connected to a transmission gear 7, a threaded groove 8 is provided on the outer side wall of the supporting sliding cavity 5, the outer side wall of the supporting cavity 1 is fixedly connected to a motor 2 9, the output end of the motor 2 9 is fixedly connected to a threaded column 10, the threaded column 10 passes through the left side of the inner side wall of the sliding groove 4, and is screwed to the outer side wall of the threaded groove 8. The outer wall of the support cavity 1 is symmetrically provided with a limit groove 11, and the inner sliding connection of the limit groove 11 is provided with a sliding block 12. The outer wall of the sliding block 12 is slidably connected to a support frame 13. The outer wall of the support frame 13 is provided with a limit hole 14. The inner sliding connection of the limit hole 14 is provided with a limit rod 15. The outer wall of the limit rod 15 is symmetrically provided with a plurality of positioning holes 16. The front sliding block 12 is fixedly connected to the support slide cavity 5. The inner part of the slide groove 4 is symmetrically provided with a plurality of arc grooves 28. One end of the support slide cavity 5 is provided with a telescopic groove 29. The inner part of the telescopic groove 29 is slidably connected with an arc block 30. The arc block 30 is directly fixed to the telescopic groove 29 with a spring three 31;

[0030] When the balance of the automobile center disk is tested, the center disk is first placed in the center disk clamping cavity 2 to complete the fixation. Then, the motor 2 9 is started, driving the threaded column 10 to rotate, and the support slide cavity 5 is threadedly connected with the threaded groove 8 on the outer wall of the support slide cavity 5, so that the support slide cavity 5 slides in the slide groove 4. When the arc-shaped clamping block 30 is aligned with the arc groove 28, the spring 31 pushes the arc-shaped clamping block 30 to be clamped in the arc groove 28, completing the positioning of the support slide cavity 5. At this time, the transmission gear 7 at the output end of the motor 1 6 is engaged with the transmission tooth 3; then the motor 1 6 is started, and the transmission gear 7 drives the transmission tooth 3 to rotate, so that the center disk clamping cavity 2 and the center disk rotate; then, according to the size of the center disk, the limit rod 15 is slid in the limit hole 14, and the positioning is performed using the positioning hole 16. The height of the support frame 13 is adjusted, and the balance of the rotating center disk is tested in conjunction with relevant testing equipment; after the test is completed, the motor 2 9 continues to rotate, the support slide cavity 5 is reset, the arc-shaped clamping block 30 disengages from the arc groove 28, enters the next arc groove 28, and continues the next test.

[0031] In this embodiment, a circular groove 17 is provided on the inner upper surface of the support frame 13, and the inner rotation connection of the circular groove 17 is limited to a circular cavity 18, and a fixed column 19 is fixedly connected between the circular cavity 18 and the transmission gear 7. The outer wall of the limiting rod 15 is fixedly connected to the support rod 20, and the bottom end of the support rod 20 is fixedly connected to the upper surface of the support cavity 1. A spring groove 21 is provided between the limiting hole 14 and the circular groove 17, and a locking column 22 is slidably connected to the inner part of the spring groove 21. A groove 23 is provided on the outer wall of the locking column 22, and a limiting ring 24 is fixedly connected to the inner part of the spring groove 21. A spring 25 is wound around the outer wall of the groove 23, and one end of the spring 25 is fixedly connected to the limiting ring 24, and the other end of the spring 25 is fixedly connected to the groove 23. A plurality of inclined grooves 26 are provided on the outer wall of the limiting circular cavity 18, and metal balls 27 are all rollingly connected to the inner parts of the inclined grooves 26;

[0032] After the vehicle's center disk is secured to the center disk cavity 2, motor 2 (9) drives threaded column 10 to rotate, causing support cavity 5 to slide along slot 4 until the arc-shaped block 30, pushed by spring 3 (31), engages arc-shaped slot 28. Drive gear 7 now precisely meshes with drive gear 3, while retaining column 19 simultaneously drives retaining cavity 18 to pre-position within slot 17. Motor 1 (6) is activated, and centrifugal force gradually overcomes the friction of slot 26 and causes the metal ball 27 within slot 26 to slide outward. Its spherical surface generates a tangential force component along the slot's inclination, pushing locking column 22 against the sidewall of retaining hole 14. At this point, spring 1 (25) is compressed, and the centrifugal force of the metal ball and the spring force form a dynamic equilibrium, causing the locking column to simultaneously engage the retaining cavity slot and the inner wall of the retaining hole, forming a mechanical interlocking structure. This centrifugal force-driven locking mechanism increases locking stiffness as speed increases, ensuring that support frame 13 is unaffected by vibration during testing and enabling precise positioning under dynamic conditions.

[0033] In this embodiment, the central disk cavity 2 includes a hollow cavity 101, the inner lower surface of the hollow cavity 101 is fixedly connected to the motor 3 102, the upper surface of the hollow cavity 101 is fixedly connected to the hollow top cavity 103, the inner upper surface of the hollow top cavity 103 is symmetrically provided with a plurality of transverse grooves 104, the inner portion of the transverse groove 104 is slidably connected to a support slide 105, the outer side wall of the support slide 105 is symmetrically fixedly connected to a support collar 106, the inner portion of the hollow top cavity 103 is rotatably connected to a turntable 107, the upper surface of the turntable 107 is symmetrically provided with angle grooves 108, the outer side walls of the support slide 105 are all slidably connected to adjacent angle grooves 108, the bottom ends of the support slides 105 are fixedly connected to the limit disk 110, the lower end of the turntable 107 A linkage rotating post 111 is fixedly connected to the surface, and the bottom end of the linkage rotating post 111 extends to the interior of the hollow cavity 101 and is fixedly connected to a hollow disk 112. The hollow disk 112 is rotatably connected to the inner upper surface of the hollow cavity 101. A hollow groove 113 is provided on the upper surface of the hollow disk 112. A clamping groove 114 is symmetrically provided inside the hollow groove 113. A contact wedge 115 is slidably connected to the interior of the clamping groove 114. A spring 2 116 is fixedly connected between the contact wedge 115 and the interior of the hollow groove 113. The bottom end of the linkage rotating post 111 extends to the interior of the hollow groove 113 and is rotatably connected to the inner lower surface of the hollow groove 113. The outer wall of the linkage rotating post 111 is symmetrically fixedly connected to an extrusion wedge 117 inside the hollow groove 113.

[0034] When motor three 102 is not started, the support collar 106 shrinks to its minimum diameter, making it easier for the center disk to fit in. When motor three starts and rotates clockwise, the linkage column 111 drives the turntable 107 to rotate synchronously. The angle slot 108 forces the support slide 105 to slide outward along the transverse slot 104, and the diameter of the support collar 106 gradually expands. When the support collar is in full contact with the inner ring of the center disk, motor three 102 continues to rotate, and the extrusion wedge 117 pushes the contact wedge 115 to overcome the preload force of spring two and retract into the clamping slot 114. The friction between the hollow disk 112 and the inner wall of the hollow cavity 101 disappears, and the motor enters an idling state, forming an overload protection to prevent overpressure damage to the inner ring of the center disk. At this time, the clamping force is maintained solely by spring 2 116, ensuring a secure fixation without exceeding the material's yield strength. This mechanism achieves four major functions through mechanical linkage: the spiral trajectory of the angle slot 108 causes the support collar to expand / contract synchronously; the frictional locking between the contact wedge and the inner wall of the hollow cavity provides high-precision centering. The entire process achieves one-touch clamping / loosening through forward and reverse rotation of the motor, making it suitable for center discs of various inner diameters and providing reliable protection for automotive wheel hub balancing detection.

[0035] The above embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A balancing device for detecting the balance of a center plate of an automobile, comprising a support cavity (1), characterized in that: The upper surface of the support cavity (1) is symmetrically connected to the central disk card cavity (2), the outer side wall of the central disk card cavity (2) is fixedly connected to the transmission gear (3), the upper surface of the support cavity (1) is provided with a slide groove (4), the interior of the slide groove (4) is slidably connected to the support slide cavity (5), the upper surface of the support slide cavity (5) is fixedly connected to the motor 1 (6), the output end of the motor 1 (6) is fixedly connected to the transmission gear (7), the outer side wall of the support slide cavity (5) is provided with a threaded groove (8), the outer side wall of the support cavity (1) is fixedly connected to the motor 2 (9), the output end of the motor 2 (9) is fixedly connected to the threaded column (10), the threaded column (10) passes through the left side of the inner side wall of the slide groove (4) and is threadedly connected to the outer side wall of the threaded groove (8).

2. The balancing device for detecting the balance of the automobile center plate according to claim 1, characterized in that: The outer wall of the support cavity (1) is symmetrically provided with a limiting groove (11), the inner portion of the limiting groove (11) is slidably connected to a sliding block (12), the outer wall of the sliding block (12) is slidably connected to a support frame (13), the outer wall of the support frame (13) is provided with a limiting hole (14), the inner portion of the limiting hole (14) is slidably connected to a limiting rod (15), the outer wall of the limiting rod (15) is symmetrically provided with a plurality of positioning holes (16), and the front sliding block (12) is fixedly connected to the support sliding cavity (5).

3. The balancing device for detecting the balance of the automobile center plate according to claim 2, characterized in that: A circular groove (17) is provided on the inner upper surface of the support frame (13), and a limited circular cavity (18) is rotatably connected to the inner portion of the circular groove (17). A fixed column (19) is fixedly connected between the limited circular cavity (18) and the transmission gear (7). The outer side wall of the limiting rod (15) is fixedly connected to a support rod (20), and the bottom end of the support rod (20) is fixedly connected to the upper surface of the support cavity (1).

4. The balancing device for detecting the balance of the center plate of an automobile according to claim 2, characterized in that: A spring groove (21) is provided between the limiting hole (14) and the circular groove (17), a locking column (22) is slidably connected inside the spring groove (21), a groove (23) is provided on the outer wall of the locking column (22), a limiting ring (24) is fixedly connected inside the spring groove (21), a spring (25) is wound around the outer wall of the groove (23), one end of the spring (25) is fixedly connected to the limiting ring (24), and the other end of the spring (25) is fixedly connected to the groove (23), a plurality of inclined grooves (26) are provided on the outer wall of the limiting circular cavity (18), and metal balls (27) are rollingly connected inside the inclined grooves (26).

5. The balancing device for detecting the balance of the automobile center plate according to claim 1, characterized in that: The central disk clamping cavity (2) includes a hollow cavity (101), the inner lower surface of the hollow cavity (101) is fixedly connected to the motor three (102), the upper surface of the hollow cavity (101) is fixedly connected to the hollow top cavity (103), the inner upper surface of the hollow top cavity (103) is symmetrically provided with a plurality of transverse grooves (104), the interior of the transverse groove (104) is slidably connected to a support slide (105), and the outer side wall of the support slide (105) is symmetrically fixedly connected to a support clamp ring (106).

6. The balancing device for detecting the balance of the automobile center plate according to claim 5, characterized in that: The hollow top cavity (103) is rotatably connected to a turntable (107) inside, and the upper surface of the turntable (107) is symmetrically provided with angle grooves (108). The outer side walls of the support slides (105) are slidably connected to adjacent angle grooves (108), and the bottom ends of the support slides (105) are fixedly connected to a limit plate (110).

7. The balancing device for detecting the balance of the automobile center plate according to claim 6, characterized in that: The lower surface of the rotating disk (107) is fixedly connected to a linkage rotating column (111), the bottom end of the linkage rotating column (111) extends to the interior of the hollow cavity (101) and is fixedly connected to a hollow disk (112), the hollow disk (112) is rotatably connected to the inner upper surface of the hollow cavity (101), the upper surface of the hollow disk (112) is provided with a slot (113), the interior of the slot (113) is symmetrically provided with a clamping slot (114), the interior of the clamping slot (114) is slidably connected to a contact wedge block (115), and a spring 2 (116) is fixedly connected between the contact wedge block (115) and the interior of the slot (113).

8. The balancing device for detecting the balance of the automobile center plate according to claim 7, characterized in that: The bottom end of the linkage rotating column (111) extends to the interior of the empty slot (113) and is rotatably connected to the inner lower surface of the empty slot (113). The outer side wall of the linkage rotating column (111) is symmetrically fixedly connected to an extrusion wedge (117) inside the empty slot (113).

9. The balancing device for detecting the balance of the automobile center plate according to claim 1, characterized in that: The interior of the slide groove (4) is symmetrically provided with a plurality of arc grooves (28), one end of the supporting slide cavity (5) is provided with a telescopic groove (29), the interior of the telescopic groove (29) is slidably connected with an arc-shaped clamping block (30), and the arc-shaped clamping block (30) is directly fixedly connected to the telescopic groove (29) with a spring three (31).

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