Dynamic balance detection device for automobile brake disc

Abstract

The invention relates to the technical field of detection, in particular to a dynamic balance detection device for an automobile brake disc. According to the technical scheme, the drilling de-weight assembly comprises a first wedge block, a second wedge block, a transmission piece, a height adjusting shaft, an external thread sleeve, a drilling piece and a drilling tool, the first wedge block is fixedly installed at the end of an expansion rod, the end of the first wedge block is slidably connected with the second wedge block, and the transmission piece is arranged on the inner wall of the top of a collecting bin; the second wedge block is connected with the height adjusting shaft through a transmission piece. The height of the brake disc body is detected through the height deflection rod, the height of the end of the height deflection rod is changed, the height adjusting shaft rotates under the action of the transmission part, the height adjusting shaft changes the distance from the bottom of a drilling tool to the sliding drilling frame through the outer threaded sleeve, and the height of the brake disc body is not required to be adjusted according to the height of the brake disc body. And the height of the drilling tool is independently adjusted, so that the dynamic balance detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and in particular to a dynamic balance detection device for a vehicle brake disc. Background Art

[0002] The car brake disc is one of the key components of the car braking system. During the braking process of the car, the brake disc and the brake pad work closely together to achieve the purpose of deceleration or stopping. Dynamic balance refers to the uniform mass distribution of the rotating object, and no unbalanced centrifugal force caused by mass eccentricity will be generated during rotation. For rotating parts, such as car brake discs, tires, crankshafts, motor rotors, etc., the mass distribution should be uniform under ideal conditions, so that the resultant centrifugal force generated by the object during rotation is zero.

[0003] If the brake disc is not well balanced, unbalanced centrifugal force will be generated during the rotation process. This will cause uneven contact pressure between the brake pad and the brake disc. In the area with higher pressure, the wear rate of the brake pad and the brake disc will accelerate, which may reduce the braking effect. The dynamic balance test of the brake disc is one of the important test items for the brake disc.

[0004] In the patent application document with announcement number CN118687765A, a dynamic balance detection device and method for a brake disc are proposed, which reduce the interference of debris generated during the workpiece deweighting operation on the normal operation of the detection device and reduce the possibility of debris adhering to the surface of the workpiece. When the workpiece is deweighted, the open end of the collecting piece fits tightly against the workpiece, and a relatively closed operating space is formed inside the collecting piece. The debris generated by the milling process of the workpiece by the tool basically falls into the collecting piece and is further extracted and collected by the collecting pipe and the exhaust equipment, reducing the possibility of debris adhering to the surface of the workpiece or entering the clamping mechanism during the milling operation, reducing the interference of the debris generated by deweighting on the normal operation of the detection device, and effectively ensuring the dynamic balance detection accuracy of the workpiece.

[0005] Since factories usually have to meet the parts supply needs of various models, they need to test brake discs of different models. The thickness and diameter of brake discs of different models are different. However, when drilling holes to remove weight from the brake disc during the testing process, this dynamic balancing detection device needs to adjust the height of the drill according to the height of the brake disc, which affects the detection efficiency. Summary of the invention

[0006] The purpose of the present invention is to propose a dynamic balance detection device for automobile brake discs in view of the problem in the background technology that the height of the drill needs to be adjusted when the factory detects different types of brake discs, which affects the detection efficiency.

[0007] The technical solution of the present invention is a dynamic balance detection device for a vehicle brake disc, comprising: a detection housing, the top of which is rotatably connected to a brake disc clamp, and a brake disc body is placed on the top of the brake disc clamp; The debris recovery assembly includes a collection bin, a height deflection rod and an expansion rod. The bottom of the collection bin is rotatably connected to the height deflection rod. The expansion rod is provided with a slide rail on one side facing the height deflection rod. The side of the height deflection rod slides in the slide rail. The height deflection rod slides up and down along the collection bin. The bottom end of the height deflection rod contacts the brake disc body. The drilling deweighting assembly includes a first wedge block, a second wedge block, a transmission member, a height adjustment shaft, an externally threaded sleeve, a drilling member and a drilling tool. The first wedge block is fixedly mounted on the end of the expansion rod, and the end of the first wedge block is slidably connected to the second wedge block. A transmission member is provided on the top inner wall of the collection bin, and the second wedge block is connected to the height adjustment shaft through the transmission member. The interior of the externally threaded sleeve is slidably connected to the height adjustment shaft up and down, and the outer wall of the externally threaded sleeve is threadedly connected to the drilling member. The top of the externally threaded sleeve is rotatably connected to the drilling tool, and the brake disc body is located below the drilling member.

[0008] Optionally, the drilling component includes a supporting guide plate and a sliding drill frame, the supporting guide plate is fixedly installed on the top of the detection shell, the sliding drill frame is slidably connected to the side of the supporting guide plate, the outer wall of the externally threaded sleeve is rotatably connected to the sliding drill frame, the sliding drill frame adopts an L-shaped structure, and the externally threaded sleeve passes through the horizontal part of the sliding drill frame.

[0009] Optionally, a co-rotating rib is fixedly mounted on the outer wall of the height adjustment shaft, and a plurality of the co-rotating ribs are arranged and are equidistantly distributed in a circular shape along the height adjustment shaft. A sliding groove having the same cross-section as that of the height adjustment shaft and the co-rotating rib is provided inside the externally threaded sleeve, and the height adjustment shaft and the co-rotating rib slide in the sliding groove.

[0010] Optionally, the collection bin includes a recovery box frame and an extension box cover, the bottom of the recovery box frame is rotatably connected to a height deflection rod, the height deflection rod slides up and down along the extension box cover, the bottom of the height adjustment shaft is rotatably connected to the extension box cover, the inner wall of the height deflection rod is rotatably connected to a roller near the bottom end, the roller rotates at the top of the brake disc body, an electric push rod fixedly connected to the recovery box frame is fixedly installed on the top of the detection shell, an exhaust duct is fixedly installed on the side of the recovery box frame away from the brake disc body, and a guide slide for the sliding of the recovery box frame is provided on the top of the detection shell.

[0011] Optionally, the transmission member includes a toothed plate, a first gear and a precision amplification assembly, the top of the second wedge block is slidably connected to the extension box cover, the side of the second wedge block is fixedly installed with the toothed plate, the bottom of the extension box cover is rotatably connected to the first gear meshing with the toothed plate, and the first gear is connected to the height adjustment shaft through the precision amplification assembly.

[0012] Optionally, the precision amplification component includes a connecting shaft, a second gear, a chain and a third gear, the top of the connecting shaft is fixedly connected to the first gear, the bottom of the connecting shaft is fixedly connected to the second gear, the bottom of the height adjustment shaft is fixedly installed with the third gear, and the second gear and the third gear are connected by a chain.

[0013] Optionally, the diameter of the first gear is smaller than that of the second gear, the diameter of the second gear is larger than that of the third gear, and a rotating shaft is fixedly installed at the bottom of the height adjustment shaft, which passes through the extension box cover and extends to the top of the third gear.

[0014] Optionally, an arc-shaped sealing plate is fixedly installed on the side of the height deflection rod, and the side of the arc-shaped sealing plate is slidably connected to the extension box cover. A leather closing piece is fixedly installed between the top of the expansion rod and the extension box cover, and a downward exploration hole for making way for the drilling tool is opened in the middle of the extension box cover.

[0015] Optionally, the side of the recovery box frame contacts the brake disc body, the bottom of the arc-shaped sealing plate contacts the brake disc body, the length of the extension box cover is longer than the length of the recovery box frame, and the extension box cover and the recovery box frame form an L-shaped structure.

[0016] Optionally, the top of the detection shell is chamfered, a control switch is fixedly installed on the chamfered surface of the detection shell, a data display screen is fixedly installed on the top of the detection shell, the top of the detection shell is rotatably connected to a rotating device fixedly connected to a brake disc clamp, and the top of the rotating device is provided with an angle scale.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention detects the height of the brake disc body by means of a height deflection rod, utilizes the height change of the end portion of the height deflection rod, and under the action of a transmission member, the height adjustment shaft rotates, and the height adjustment shaft utilizes an externally threaded sleeve to change the distance from the bottom of the drill tool to the sliding drill frame, so that the lowest point height of the drill tool is the same as the top height of the brake disc body. When drilling holes to remove weight on brake disc bodies of different models, the lowest point height of the drill tool is always the same as the top height of the brake disc body. There is no need to adjust the height of the drill tool separately according to the height of the brake disc body, thereby improving the efficiency of dynamic balancing detection.

[0018] Furthermore, by utilizing the diameter ratio of the first gear, the second gear, and the third gear, when the first gear rotates one circle, the height adjustment shaft rotates several circles, and an externally threaded sleeve is utilized to improve the accuracy of adjusting the distance from the bottom of the drill tool to the sliding drill frame. When adjusting the height of the drill tool, the finer the thread of the externally threaded sleeve, the more precise the height adjustment of the drill tool, thereby shortening the distance between the bottom of the drill tool and the brake disc body, thereby reducing the deweighting error.

[0019] Furthermore, the recovery box frame, the extension box cover and the arc-shaped sealing plate cooperate to form an enclosed space. When drilling to remove weight, the debris is confined in the enclosed space to prevent the debris from adhering to the brake disc body. The exhaust pipe is used to collect the debris in the enclosed space. When the electric push rod retracts, the bottom of the arc-shaped sealing plate scrapes off the debris with strong adhesion on the top of the brake disc body, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is provided; Figure 2 A schematic diagram of the brake disc clamp structure according to an embodiment of the present invention is given; Figure 3 A schematic diagram of the structure of an arc-shaped sealing plate according to an embodiment of the present invention is given; Figure 4 for Figure 3 A part of the external threaded sleeve structure enlarged schematic diagram; Figure 5 A schematic diagram of the height adjustment shaft structure of an embodiment of the present invention is provided; Figure 6 A schematic cross-sectional view of an extended cover structure according to an embodiment of the present invention is provided; Figure 7 for Figure 6 An enlarged schematic diagram of the second gear structure in part B; Figure 8 A schematic top view of a recycling box frame structure according to an embodiment of the present invention is provided; Fig. 9 A schematic structural diagram of a brake disc body according to an embodiment of the present invention is given.

[0021] 1. Detection housing; 2. Control switch; 3. Data display screen; 4. Rotating device; 5. Brake disc clamp; 6. Brake disc body; 7. Debris recovery assembly; 71. Recovery box frame; 72. Guide slide; 73. Extension box cover; 74. Height deflection rod; 75. Exhaust duct; 76. Roller; 77. Extension rod; 78. Arc sealing plate; 79. Leather closing piece; 710. Electric push rod; 8. Drilling and deweighting assembly; 81. First wedge block; 82. Second wedge block; 83. Tooth plate; 84. First gear; 85. Height adjustment shaft; 86. Co-rotating convex strip; 87. Externally threaded sleeve; 88. Drilling tool; 89. Support guide plate; 810. Sliding drill frame; 9. Precision amplification assembly; 91. Connecting shaft; 92. Second gear; 93. Chain; 94. Third gear. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment: This embodiment provides a dynamic balance detection device for a vehicle brake disc, such as Figure 1 and Fig. 9 As shown, it includes a detection shell 1, the top of the detection shell 1 is rotatably connected to a brake disc clamp 5, a brake disc body 6 is placed on the top of the brake disc clamp 5, the top of the detection shell 1 is chamfered, a control switch 2 is fixedly installed on the chamfered surface of the detection shell 1, a data display screen 3 is fixedly installed on the top of the detection shell 1, the top of the detection shell 1 is rotatably connected to a rotating device 4 fixedly connected to the brake disc clamp 5, and the top of the rotating device 4 is provided with an angle scale.

[0028] like Figure 3-Figure 6 As shown, a debris recovery assembly 7 is provided on the top of the detection housing 1. The debris recovery assembly 7 includes a collection bin, a height deflection rod 74 and an extension rod 77. The collection bin includes a recovery box frame 71 and an extension box cover 73. The bottom of the recovery box frame 71 is rotatably connected to the height deflection rod 74. The extension rod 77 is provided with a slide rail on the side facing the height deflection rod 74. The side of the height deflection rod 74 slides in the slide rail. The height deflection rod 74 slides up and down along the collection bin, and the bottom end of the height deflection rod 74 contacts the brake disc body 6. An electric push rod 710 fixedly connected to the recovery box frame 71 is fixedly installed on the top of the detection housing 1. An exhaust pipe 75 is fixedly installed on the side of the recovery box frame 71 away from the brake disc body 6. A guide slide 72 for the recovery box frame 71 to slide is provided on the top of the detection housing 1.

[0029] The electric push rod 710 is extended to move the height deflection rod 74 toward the brake disc body 6. The height deflection rod 74 is blocked by the brake disc body 6 and rotates. The height deflection rod 74 drives the expansion rod 77 to move upward. The brake disc body 6 is used to rotate the height deflection rod 74. The height of the end of the height deflection rod 74 rises, thereby detecting the height of the brake disc body 6.

[0030] like Figure 7 and Figure 8 As shown, a drilling and deweighting assembly 8 is arranged on the top of the debris recovery assembly 7, and the drilling and deweighting assembly 8 includes a first wedge block 81, a second wedge block 82, a transmission member, a height adjustment shaft 85, an externally threaded sleeve 87, a drilling member and a drilling tool 88. The first wedge block 81 is fixedly mounted on the end of the expansion rod 77, and the end of the first wedge block 81 is slidably connected to the second wedge block 82. A transmission member is arranged on the top inner wall of the collection bin, and the second wedge block 82 is connected to the height adjustment shaft 85 through the transmission member. The interior of the externally threaded sleeve 87 is slidably connected to the height adjustment shaft 85 up and down, and the outer wall of the externally threaded sleeve 87 is threadedly connected to the drilling member. The top of the externally threaded sleeve 87 is rotatably connected to the drilling tool 88, and the brake disc body 6 is located below the drilling member.

[0031] The transmission member includes a toothed plate 83, a first gear 84 and a precision amplification component 9. The top of the second wedge block 82 is slidably connected to the extension box cover 73, the side of the second wedge block 82 is fixedly installed with the toothed plate 83, and the bottom of the extension box cover 73 is rotatably connected to the first gear 84 meshing with the toothed plate 83. The first gear 84 is connected to the height adjustment shaft 85 through the precision amplification component 9.

[0032] By moving the expansion rod 77 upward, the first wedge block 81 moves upward and squeezes the second wedge block 82. The second wedge block 82 is squeezed and moves in the direction away from the first wedge block 81. The second wedge block 82 pushes the tooth plate 83 to rotate the first gear 84. The first gear 84 drives the height adjustment shaft 85 to rotate through the precision amplification component 9, so that the height adjustment shaft 85 drives the external threaded sleeve 87 to rotate. The rotation of the external threaded sleeve 87 changes the height of the drilling part and changes the initial height of the drilling part. When drilling to remove weight, the drilling depth is controlled according to the height of the brake disc body 6.

[0033] The drilling depth of the drilling piece determines the weight loss in grams. The height of the brake disc body 6 is detected by the height deflection rod 74, so that the drilling piece can be moved to the top of the brake disc body 6 and contact with the brake disc body 6, not only avoiding the brake disc body 6, but also moving the drilling piece to the top of the brake disc body 6 for drilling.

[0034] like Figure 3 and Figure 4 As shown, the drilling member includes a support guide plate 89 and a sliding drill frame 810. The support guide plate 89 is fixedly installed on the top of the detection housing 1. The sliding drill frame 810 is slidably connected to the side of the support guide plate 89. The outer wall of the external threaded sleeve 87 is rotatably connected to the sliding drill frame 810. The sliding drill frame 810 adopts an L-shaped structure, and the external threaded sleeve 87 passes through the horizontal part of the sliding drill frame 810. The outer wall of the height adjustment shaft 85 is fixedly installed with a co-rotating convex strip 86. A plurality of co-rotating convex strips 86 are provided and are distributed in an annular manner and equidistantly along the height adjustment shaft 85. The interior of the external threaded sleeve 87 is provided with a slide groove with the same cross section as the height adjustment shaft 85 and the co-rotating convex strip 86. The height adjustment shaft 85 and the co-rotating convex strip 86 slide in the slide groove.

[0035] The external threaded sleeve 87 is driven to rotate by the cooperation of the height adjustment shaft 85 and the co-rotating convex strip 86, so that the external threaded sleeve 87 rotates and the drill bit 88 moves upward. When drilling is required to remove weight, the sliding drill frame 810 moves downward along the support guide plate 89. Since the height adjustment shaft 85 and the co-rotating convex strip 86 slide in the sliding groove inside the external threaded sleeve 87, the height adjustment shaft 85 and the co-rotating convex strip 86 will not hinder the movement of the sliding drill frame 810 and the drill bit 88. By rotating the height adjustment shaft 85 to adjust the distance from the bottom of the drill bit 88 to the sliding drill frame 810, the lowest point height of the drill bit 88 can be adjusted so that the lowest point height of the drill bit 88 is the same as the top height of the brake disc body 6.

[0036] The height of the brake disc body 6 is detected by the height deflection rod 74, and the height of the end of the height deflection rod 74 is changed. Under the action of the transmission member, the height adjustment shaft 85 rotates, and the height adjustment shaft 85 uses the external threaded sleeve 87 to change the distance from the bottom of the drill 88 to the sliding drill frame 810, so that the lowest point height of the drill 88 is the same as the top height of the brake disc body 6. When drilling holes for deweighting brake disc bodies 6 of different models, the lowest point height of the drill 88 is always the same as the top height of the brake disc body 6, and there is no need to adjust the height of the drill 88 separately, thereby improving the efficiency of dynamic balancing detection.

[0037] The precision amplification component 9 includes a connecting shaft 91, a second gear 92, a chain 93 and a third gear 94. The top of the connecting shaft 91 is fixedly connected to the first gear 84, the bottom of the connecting shaft 91 is fixedly connected to the second gear 92, the bottom of the height adjustment shaft 85 is fixedly installed with the third gear 94, and the second gear 92 and the third gear 94 are connected by a chain 93.

[0038] like Figure 8 As shown, the diameter of the first gear 84 is smaller than that of the second gear 92, and the diameter of the second gear 92 is larger than that of the third gear 94. A rotating shaft is fixedly installed at the bottom of the height adjustment shaft 85, and the rotating shaft passes through the extension box cover 73 and extends to the top of the third gear 94. According to the diameter ratio of the first gear 84, the second gear 92 and the third gear 94, the height adjustment shaft 85 rotates several times when the first gear 84 rotates one circle.

[0039] By utilizing the diameter ratio of the first gear 84, the second gear 92 and the third gear 94, when the first gear 84 rotates one circle, the height adjustment shaft 85 rotates several circles. The height adjustment shaft 85 is utilized to improve the accuracy of adjusting the distance from the bottom of the drill tool 88 to the sliding drill frame 810, so that the height of the drill tool 88 can be adjusted with improved accuracy.

[0040] An arc-shaped sealing plate 78 is fixedly installed on the side of the height deflection rod 74, and the side of the arc-shaped sealing plate 78 is slidably connected to the extension box cover 73. A leather sealing piece 79 is fixedly installed between the top of the extension rod 77 and the extension box cover 73. A downward exploration hole for making way for the drilling tool 88 is opened in the middle of the extension box cover 73. The leather sealing piece 79 cooperates with the extension rod 77 to cover the gap.

[0041] The lower exploration hole is used for the drill 88 to pass through. After the drill 88 enters the lower exploration hole, the recovery box frame 71, the extension box cover 73 and the arc-shaped sealing plate 78 cooperate to form a closed space. When drilling to remove weight, the debris is confined in the closed space to prevent the debris from adhering to the brake disc body 6. The exhaust pipe 75 is used to collect the debris in the closed space. When the electric push rod 710 is retracted, the bottom of the arc-shaped sealing plate 78 scrapes the debris on the top of the brake disc body 6, further improving the cleaning effect.

[0042] The side of the recovery box frame 71 contacts the brake disc body 6, the bottom of the arc-shaped sealing plate 78 contacts the brake disc body 6, the length of the extension box cover 73 is longer than the length of the recovery box frame 71, and the extension box cover 73 and the recovery box frame 71 form an L-shaped structure, so that the height deflection rod 74 contacts the brake disc body 6 first, so as to adjust the height of the arc-shaped sealing plate 78.

[0043] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A dynamic balance detection device for a vehicle brake disc, characterized in that: include: A detection housing (1), the top of the detection housing (1) being rotatably connected to a brake disc fixture (5), and a brake disc body (6) being placed on the top of the brake disc fixture (5); A debris recovery assembly (7) comprises a collection bin, a height deflection rod (74) and an expansion rod (77), wherein the bottom of the collection bin is rotatably connected to the height deflection rod (74), the expansion rod (77) is provided with a slide rail on one side facing the height deflection rod (74), the side of the height deflection rod (74) slides in the slide rail, the height deflection rod (74) slides up and down along the collection bin, and the bottom end of the height deflection rod (74) contacts the brake disc body (6); A drilling deweighting assembly (8) comprises a first wedge block (81), a second wedge block (82), a transmission member, a height adjustment shaft (85), an externally threaded sleeve (87), a drilling member and a drilling tool (88), wherein the first wedge block (81) is fixedly mounted on the end of an expansion rod (77), the end of the first wedge block (81) is slidably connected to the second wedge block (82), a transmission member is arranged on the top inner wall of the collection bin, the second wedge block (82) is connected to the height adjustment shaft (85) via the transmission member, the interior of the externally threaded sleeve (87) is slidably connected to the height adjustment shaft (85) up and down, the outer wall of the externally threaded sleeve (87) is threadedly connected to the drilling member, the top of the externally threaded sleeve (87) is rotatably connected to the drilling tool (88), and the brake disc body (6) is located below the drilling member.

2. The dynamic balance detection device for a vehicle brake disc according to claim 1, characterized in that: The drilling component comprises a support guide plate (89) and a sliding drill frame (810); the support guide plate (89) is fixedly mounted on the top of the detection housing (1); the sliding drill frame (810) is slidably connected to the side of the support guide plate (89); the outer wall of the externally threaded sleeve (87) is rotatably connected to the sliding drill frame (810); the sliding drill frame (810) adopts an L-shaped structure; and the externally threaded sleeve (87) passes through the horizontal part of the sliding drill frame (810).

3. The dynamic balance detection device for a vehicle brake disc according to claim 1, characterized in that: A co-rotating convex strip (86) is fixedly mounted on the outer wall of the height adjustment shaft (85); a plurality of the co-rotating convex strips (86) are provided and are equidistantly distributed in a ring shape along the height adjustment shaft (85); a sliding groove having the same cross-section as the height adjustment shaft (85) and the co-rotating convex strip (86) is provided inside the external threaded sleeve (87); the height adjustment shaft (85) and the co-rotating convex strip (86) slide in the sliding groove.

4. The dynamic balance detection device for a vehicle brake disc according to claim 1, characterized in that: The collecting bin comprises a recovery box frame (71) and an extension box cover (73); the bottom of the recovery box frame (71) is rotatably connected to a height deflection rod (74); the height deflection rod (74) slides up and down along the extension box cover (73); the bottom of the height adjustment shaft (85) is rotatably connected to the extension box cover (73); the inner wall of the height deflection rod (74) and near the bottom end thereof is rotatably connected to a roller (76); the roller (76) rotates on the top of the brake disc body (6); an electric push rod (710) fixedly connected to the recovery box frame (71) is fixedly installed on the top of the detection housing (1); an exhaust pipe (75) is fixedly installed on a side of the recovery box frame (71) away from the brake disc body (6); and a guide slideway (72) for sliding the recovery box frame (71) is provided on the top of the detection housing (1).

5. The dynamic balance detection device for a vehicle brake disc according to claim 4, characterized in that: The transmission member comprises a toothed plate (83), a first gear (84) and a precision amplifying component (9); the top of the second wedge block (82) is slidably connected to the extension box cover (73); the side of the second wedge block (82) is fixedly mounted with the toothed plate (83); the bottom of the extension box cover (73) is rotatably connected to a first gear (84) meshing with the toothed plate (83); and the first gear (84) is connected to a height adjustment shaft (85) via the precision amplifying component (9).

6. The dynamic balance detection device for a vehicle brake disc according to claim 5, characterized in that: The precision amplification component (9) comprises a connecting shaft (91), a second gear (92), a chain (93) and a third gear (94); the top of the connecting shaft (91) is fixedly connected to the first gear (84); the bottom of the connecting shaft (91) is fixedly connected to the second gear (92); the bottom of the height adjustment shaft (85) is fixedly mounted with the third gear (94); and the second gear (92) and the third gear (94) are connected via a chain (93).

7. The dynamic balance detection device for a vehicle brake disc according to claim 6, characterized in that: The diameter of the first gear (84) is smaller than that of the second gear (92), and the diameter of the second gear (92) is larger than that of the third gear (94). A rotating shaft is fixedly mounted at the bottom of the height adjustment shaft (85), and the rotating shaft passes through the extension box cover (73) and extends to the top of the third gear (94).

8. The dynamic balance detection device for a vehicle brake disc according to claim 4, characterized in that: An arc-shaped sealing plate (78) is fixedly mounted on the side of the height deflection rod (74), and the side of the arc-shaped sealing plate (78) is slidably connected to the extension box cover (73). A leather sealing piece (79) is fixedly mounted between the top of the expansion rod (77) and the extension box cover (73), and a downward exploration hole for making way for a drilling tool (88) is opened in the middle of the extension box cover (73).

9. The dynamic balance detection device for a vehicle brake disc according to claim 8, characterized in that: The side of the recovery box frame (71) contacts the brake disc body (6), the bottom of the arc-shaped sealing plate (78) contacts the brake disc body (6), the length of the extension box cover (73) is longer than the length of the recovery box frame (71), and the extension box cover (73) and the recovery box frame (71) form an L-shaped structure.

10. The dynamic balance detection device for a vehicle brake disc according to claim 1, characterized in that: The top of the detection housing (1) is provided with a chamfer, a control switch (2) is fixedly mounted on the chamfered surface of the detection housing (1), a data display screen (3) is fixedly mounted on the top of the detection housing (1), and a rotating device (4) fixedly connected to a brake disc clamp (5) is rotatably connected to the top of the detection housing (1), and an angle scale is provided on the top of the rotating device (4).

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