A car tire balancing machine

Abstract

A vehicle tire balancing machine belongs to the technical field of tire balancing equipment, and particularly relates to a vehicle tire balancing machine. The present invention provides a highly effective vehicle tire balancing machine. The present invention comprises a balancing machine body, on which a balancing machine spindle and a pressure sensor are mounted. The front end of the balancing machine spindle is connected to the rear end of the balancing machine rotor assembly. The present invention is also characterized by a brake control component for the balancing machine rotor assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of tire balancing equipment, and in particular relates to an automobile tire balancing machine. Background Art

[0002] The automotive tire balancing machines currently in use are typical mechatronic devices, specifically comprised of a mechanical body, a spindle rotor, a signal acquisition unit, a drive unit, a transmission unit, and a central processing unit. Each component performs its own distinct functions while also working in concert. The mechanical body is typically a welded housing that supports the spindle rotor and drive unit. Rotors of varying weights and specifications require a corresponding mechanical body configuration to ensure rotor balancing accuracy and operator safety. The spindle rotor rotates around its axis, with one end providing a tire clamp and the other connected to the transmission unit. Signal acquisition typically utilizes a horizontal and a vertical telecommunication sensor connected to the spindle rotor via a support frame. The drive unit, typically a motor, provides the power to rotate the rotor. The transmission unit comprises the process shaft, belt transmission (or friction wheel assembly), and fixed devices required for rotor rotation. In a typical balancing machine, a motor drives the spindle rotor through the transmission unit, forcing the support frames to vibrate and tilt. A telecommunication sensor located beneath each support frame transmits the vibration and tilt signal to the central processing unit. After amplification and filtering, the signal is fed back to the control panel by a single-chip microcomputer. The existing automobile wheel balancing machine does not have a brake control mechanism with braking and holding functions, the detection time is long, and the lead-sticking operation is not convenient. Summary of the Invention

[0003] The present invention aims to solve the above problems and provides a car tire balancing machine with good use effect.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution, which includes a balancing machine body 1, on which a balancing machine spindle 10 and a pressure sensor 3 are provided, and the front end of the balancing machine spindle 10 is connected to the rear end of the balancing machine rotor assembly 5; it is characterized in that a braking control component of the balancing machine rotor assembly 5 is also provided.

[0005] As a preferred solution, the balancing machine main shaft 10 of the present invention is provided with a driving motor for driving the balancing machine rotor assembly 5 to rotate.

[0006] As another preferred embodiment, the drive motor of the present invention includes a motor stator assembly 35, a neodymium iron boron magnetic steel sheet 36 and a motor end cover 37. The motor stator assembly 35 is fixed to the balancing machine main shaft 10 by an interference fit. The balancing machine rotor assembly 5 serves as the rotor of the drive motor. A brake disc 24 for use with a brake control component is provided on the outside of the balancing machine rotor assembly 5. The motor stator assembly 35 is provided on the inner side of the rear end of the balancing machine rotor assembly 5. A neodymium iron boron magnetic steel sheet 36 is provided on the inner wall of the rear end of the balancing machine rotor assembly 5.

[0007] A motor end cover 37 is provided on the rear side of the balancing machine rotor assembly 5. The outer ring of the motor end cover 37 is connected to the rear end of the balancing machine rotor assembly 5 through fasteners, and the inner ring of the motor end cover 37 is connected to the photoelectric disk 8 through fasteners. The balancing machine main shaft 10 passes through the photoelectric disk 8; a photoelectric panel 38 is provided on the balancing machine main shaft 10 for use with the photoelectric disk 8.

[0008] As another preferred embodiment, the front end of the balancing machine rotor assembly 5 of the present invention is connected in sequence to the centering cone 7 and the hand-cranked quick-release nut 6, and the braking control components include a brake handle 9, a brake support 22 and a brake bracket 21. One end of the brake bracket 21 is hinged to the brake support 22 by a bolt 39, and the brake block 23 is installed on the brake bracket 21. The other end of the brake bracket 21 is hinged to one end of the brake link 20, and the other end of the brake link 20 is hinged to the connecting hinge 19. The connecting hinge 19 is threadedly connected to one end of the slide rod 25, and the other end of the slide rod 25 is hinged to the brake handle 9 by a pin 40; the sliding sleeve 26 is fixed on the outer cover of the box 14, and the slide rod 25 is installed on the sliding sleeve 26 for sliding. There is a hinge hole on the sliding sleeve 26 that is hinged to one end of the connecting rod 27, and the other end of the connecting rod 27 is hinged to the brake handle 9.

[0009] As another preferred solution, the balancing machine body 1 of the present invention is provided with a connecting component that can be detachably connected to the tire changing machine 50 .

[0010] As another preferred solution, the connecting component of the present invention is arranged at the lower end of the balancing machine body 1 .

[0011] As another preferred embodiment, the connecting component of the present invention includes a main shaft 42, the upper end of the main shaft 42 is connected to the balancing machine body 1 through a connecting seat 41, the lower end of the main shaft 42 is inserted into a sleeve 44, the sleeve 44 is arranged on the support arm 30, the upper part of the main shaft 42 is provided with teeth 28, and the outer side of the sleeve 44 is provided with sleeve end face teeth 29; the lower end of the main shaft 42 is connected to the upper end of the screw 43, and a hand nut 31 is screwed on the screw 43, and the upper end surface of the hand nut 31 and the lower end surface of the support arm 30 are interacting surfaces.

[0012] As another preferred solution, a support rod 32 is provided at the lower end of the support arm 30 of the present invention, and an adjustable support seat 33 is provided at the lower end of the support rod 32.

[0013] As another preferred embodiment, the balancing machine body 1 of the present invention is provided with a box cover 14, the balancing machine spindle 10, the drive motor, the pressure sensor 3 and the brake control component are arranged inside the box cover 14, and the operating end of the brake control component is arranged outside the box cover 14.

[0014] As another preferred solution, the outer casing 14 of the box body of the present invention is made of metal.

[0015] As another preferred solution, an upper cover 15 is buckled on the upper end of the outer cover 14 of the box according to the present invention, and a measuring ruler and a central processing unit of the operation panel are installed on the upper cover 15.

[0016] As another preferred solution, the upper cover 15 of the present invention is made of plastic.

[0017] As another preferred embodiment, the lower ends of both sides of the balancing machine spindle 10 of the present invention are arranged on the balancing machine body 1 through support plates 11, and the pressure sensor 3 is arranged on the balancing machine body 1 through the sensor support plate 2. The pressure sensor 3 is arranged between the sensor support plate 2 and the balancing machine spindle 10; there are two pressure sensors 3, and each support plate 11 corresponds to a pressure sensor 3.

[0018] In addition, the inner wall of the rear hole of the balancing machine rotor assembly 5 of the present invention is connected to the front outer wall of the balancing machine main shaft 10 through the front bearing and the rear bearing.

[0019] The present invention has beneficial effects.

[0020] The present invention is provided with a brake control component, which solves the braking and brake holding functions, saves detection time, and facilitates the lead-sticking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.

[0022] Figure 1 It is a schematic diagram of the main structure of the manual brake control component adopted in the present invention.

[0023] Figure 2 It is a top view schematic diagram of the manual brake control component structure adopted in the present invention.

[0024] Figure 3 It is a side view schematic diagram of the structure of the manual brake control component adopted by the present invention.

[0025] Figure 4 This is a structural diagram of the manual brake control component body of the present invention.

[0026] Figure 5 This is an exploded view of the structure of the manual brake control component used in the present invention.

[0027] Figure 6 It is a schematic diagram of brake release using a manual brake control component in the present invention.

[0028] Figure 7 It is a schematic diagram of the braking process using a manual brake control component in the present invention.

[0029] Figure 8It is a schematic diagram of braking using a manual brake control component in the present invention.

[0030] Figure 9 It is a schematic diagram of the working state of the manual brake control component of the present invention.

[0031] Figure 10 This is a diagram illustrating the use of a manual brake control component in the present invention.

[0032] Figure 11 The present invention adopts the manual brake control component angle transformation palace view.

[0033] Figure 12 This is a structural diagram of the spindle motor using a drive motor brake control component in the present invention.

[0034] Figure 13 This is a cross-sectional view of the brake control component of the driving motor used in the present invention.

[0035] Figure 14 It is a top view of the brake control component of the driving motor adopted in the present invention.

[0036] Figure 15 It is a side view of the brake control component of the driving motor adopted in the present invention.

[0037] Figure 16 This is an exploded view of the connection structure of the manual brake control components used in the present invention.

[0038] In the figure, 1 is the balancing machine body, 2 is the sensor support plate, 3 is the pressure sensor, 4 is the brake mechanism, 5 is the balancing machine rotor assembly, 6 is the hand-cranked quick-release nut, 7 is the centering cone, 8 is the photoelectric disk, 9 is the brake handle, 10 is the balancing machine spindle, 11 is the balancing spindle support plate, 12 is the central processing unit, 13 is the manual measuring ruler, 14 is the box cover, 15 is the plastic upper cover, 16 is the operation display panel button panel, 17 is the power switch, 18 is the power socket, 19 is the connecting hinge seat, 20 is the brake connecting rod, 21 is the brake bracket, 22 is the brake support, 23 is the brake block, 24 is a brake disc, 25 is a sliding rod, 26 is a sliding sleeve, 27 is a connecting rod, 28 is the main shaft end face teeth, 29 is the sleeve end face teeth, 30 is a support arm, 31 is a hand nut, 32 is a support rod, 33 is an adjustable support seat, 34 is an LED lighting lamp, 35 is a motor stator assembly, 36 is a neodymium iron shed magnetic steel sheet, 37 is a motor end cover, 38 is a photoelectric panel, 39 is a bolt, 40 is a pin, 41 is a connecting seat, 42 is a main shaft, 43 is a screw, 44 is a sleeve, 50 is a tire changer, 60 is a car tire, 61 is a fixed end face, 62 is a front bearing, and 63 is a rear bearing. DETAILED DESCRIPTION

[0039] As shown in the figure, the present invention includes a balancing machine body 1, on which a balancing machine spindle 10 and a pressure sensor 3 are provided. The front end of the balancing machine spindle 10 is connected to the rear end of the balancing machine rotor assembly 5; a braking control component of the balancing machine rotor assembly 5 is also provided.

[0040] The balancing machine main shaft 10 is provided with a driving motor for driving the balancing machine rotor assembly 5 to rotate.

[0041] The drive motor is arranged on the main shaft 10 of the balancing machine, which eliminates the intermediate interference of the transmission part and improves the accuracy of the unbalance detection.

[0042] The hand-crank quick-release nut 6 has two functions: one is to cooperate with the centering cone 7 to clamp the tire, and the other is to drive the main shaft 10 to rotate by hand when the drive motor is not installed. Whether the main shaft 10 is driven by the drive motor or by the hand-crank quick-release nut 6, the hand-crank quick-release nut 6 and the centering cone 7 are required. When the motor stator assembly 35 and the neodymium iron shed magnet 36 are not installed, it is manually driven. When they are installed, it is motor-driven. Figures 12 to 15 In order to express the motor structure, the hand-cranked quick-release nut 6, the centering cone 7 and the brake mechanism 4 are not drawn.

[0043] No matter whether the main shaft 10 is driven to rotate by the hand-cranked quick-release nut 6 or by the driving motor, the braking control component adopts the braking mechanism 4 .

[0044] After the tire is clamped on the balancing machine rotor assembly 5 by the hand-cranked quick-release nut 6 through the fixed end face 61 and the centering cone 7, the crank handle of the handle nut is cranked to drive the tire to rotate. When the speed reaches the set speed, the handle is released to enter the imbalance detection state.

[0045] The drive motor includes a motor stator assembly 35, a neodymium iron boron magnetic steel sheet 36 and a motor end cover 37. The motor stator assembly 35 is fixed to the balancing machine main shaft 10 as a whole through an interference fit; the balancing machine rotor assembly 5 serves as the rotor of the drive motor. A brake disc 24 for use with a brake control component is provided on the outside of the balancing machine rotor assembly 5. The motor stator assembly 35 is provided on the inner side of the rear end of the balancing machine rotor assembly 5. A neodymium iron boron magnetic steel sheet 36 is provided on the inner wall of the rear end of the balancing machine rotor assembly 5.

[0046] A motor end cover 37 is provided on the rear side of the balancing machine rotor assembly 5. The outer ring of the motor end cover 37 is connected to the rear end of the balancing machine rotor assembly 5 through fasteners, and the inner ring of the motor end cover 37 is connected to the photoelectric disk 8 through fasteners. The balancing machine main shaft 10 passes through the photoelectric disk 8; a photoelectric panel 38 is provided on the balancing machine main shaft 10 for use with the photoelectric disk 8.

[0047] The photoelectric disc 8 and the brake disc 24 rotate together with the balancing machine rotor assembly 5. The brake disc 24 can be an area processed outside the balancing machine rotor assembly 5. When braking, the brake block 23 holds the brake disc 24 tightly.

[0048] Neodymium iron boron magnets 36 magnetically drive the motor's rotor (i.e., the balancing machine rotor assembly 5) to rotate. The balancing machine rotor (comprising the balancing machine rotor assembly 5 and the motor stator assembly 35) acts as a motor. This means the motor shaft (i.e., the balancing machine spindle 10) does not rotate, while the motor housing (i.e., the balancing machine rotor assembly 5) does. Photoelectric disc 8 and photoelectric panel 38 work together to detect the angular position of the balancing machine rotor assembly 5, which is used to calculate the tire's imbalance point. (Calculating the tire's imbalance point through angular position detection is a conventional technique.)

[0049] The front end of the balancing machine rotor assembly 5 is connected in sequence to the centering cone 7 and the hand-cranked quick-release nut 6 (the centering cone 7 and the hand-cranked quick-release nut 6 are existing conventional components), and the braking control component includes a brake handle 9, a brake support 22 and a brake bracket 21. One end of the brake bracket 21 is hinged to the brake support 22 by a bolt 39, and the brake block 23 is installed on the brake bracket 21. The other end of the brake bracket 21 is hinged to one end of the brake connecting rod 20, and the other end of the brake connecting rod 20 is hinged to the connecting hinge seat 19. The connecting hinge seat 19 is threadedly connected to one end of the slide rod 25, and the other end of the slide rod 25 is hinged to the brake handle 9 through a pin 40; the sliding sleeve 26 is fixed on the outer cover of the box 14, and the slide rod 25 is installed on the sliding sleeve 26 for sliding. The sliding sleeve 26 has a hinge hole hinged to one end of the connecting rod 27, and the other end of the connecting rod 27 is hinged to the brake handle 9.

[0050] The present invention can drive the balancing machine rotor assembly 5 to rotate by manually cranking the quick-release nut 6, thereby eliminating the intermediate interference between the driving and transmission parts and improving the accuracy of unbalance detection.

[0051] The brake mechanism 4 adopts a double crank slider structure (connecting rod 27 as crank, slide rod 25 as slider, brake bracket 21 as crank), and the brake handle adopts a centrifugal crank slider mechanism (the center line of slide rod 25 passes through the axis of connecting rod 27, and there are two self-locking points, as shown in Figures 6, 7, and 8. Figure 6 、 7 8 shows the principle and process of braking, providing brake hold and release hold), the brake pad adopts an offset crank slider mechanism (the center line of the slide rod 25 does not pass the axis of the brake bracket 21). Figure 6The position shown is the brake release hold. At this time, the center line of the slide bar 25 coincides with the center line of the connecting rod and the connecting rod 27 of the brake handle 9. The brake handle 9 is held and rotated counterclockwise, and the connecting rod 27 swings counterclockwise. The slide bar 25 moves linearly outward along the sliding sleeve 26, driving the brake connecting rod 20 to swing. The brake connecting rod 20 drives the brake bracket 21 to rotate clockwise with the bolt 39 as the axis. The brake block 23 on the brake bracket 21 approaches the brake disc 24 and holds it tightly, realizing braking of the balanced rotor assembly 5; the brake handle 9 is held and continued to be rotated counterclockwise until the center line of the slide bar 25 coincides with the center line of the connecting rod and the connecting rod 27 of the brake handle 9 again, entering the brake hold state as shown in FIG. Figure 8 The hand-held brake handle 9 is rotated clockwise to make the above brake-related parts move in the opposite direction, and the brake is released until the brake is released and held.

[0052] The balancing machine body 1 is provided with a connecting component that can be detachably connected to the tire changing machine 50 .

[0053] The connecting component is arranged at the lower end of the balancing machine body 1 .

[0054] The connecting component includes a main shaft 42, the upper end of the main shaft 42 is connected to the balancing machine body 1 through a connecting seat 41, the lower end of the main shaft 42 is inserted into a shaft sleeve 44, and the shaft sleeve 44 is arranged on the support arm 30. The upper part of the main shaft 42 is provided with teeth 28 (the main shaft 42 can be inserted into the center hole of the teeth 28 and connected by a top screw), and the outer side of the shaft sleeve 44 is provided with shaft sleeve end face teeth 29 (the shaft sleeve end face teeth 29 and the shaft sleeve 44 can be connected by a top screw); the lower end of the main shaft 42 is connected to the upper end of the screw 43, and a hand nut 31 is screwed on the screw 43, and the upper end surface of the hand nut 31 and the lower end surface of the support arm 30 are interacting surfaces. The balancing machine body 1 is mounted on a connecting base 41. A main shaft 42 is mounted on the connecting base, equipped with end teeth 28. The end teeth 29 of the sleeve are mounted on a support arm 30. The support arm 30 can be connected to the tire changer 50 (the support arm 30 can be connected to the tire changer 50 or a wall via fasteners). A screw 43 is connected to the main shaft 42, and a hand nut 31 is used to clamp and secure the connecting base 41 and support arm 30. The balancing machine's operating angle is adjusted by the rotational engagement of the teeth 28 and the end teeth 29 of the sleeve. Once adjusted, the hand nut 31 is used to secure the balancing machine.

[0055] The support arm 30 facilitates the installation of the balancing machine on the tire changer 50 or on a wall. The tooth indexing can be adjusted to various working angles. The adjustable support can meet the needs of various complex ground environments, greatly saving the floor space occupied by the balancing machine. The balancing machine is particularly suitable for installation on mobile service vehicles and is also suitable for tire shops with limited space.

[0056] The support arm 30 is provided with a support rod 32 at its lower end (the lower part of the screw rod 43 is placed inside the support rod 32 ), and an adjustable support seat 33 is provided at its lower end.

[0057] The screw in the middle of the adjustable support seat 33 extends into the lower end of the support rod 32. A nut is screwed on the screw, and the upper end surface of the nut forms an interaction surface with the lower end surface of the support rod 32. Rotating the nut adjusts the support height to support the balancing machine body 1.

[0058] The balancing machine body 1 is provided with a box cover 14 , the balancing machine spindle 10 , the drive motor, the pressure sensor 3 and the brake control component are arranged inside the box cover 14 , and the operating end of the brake control component is arranged outside the box cover 14 .

[0059] The outer casing 14 is a metal outer casing. A power switch 17 and a power socket 18 may be provided on the outer casing 14. A central processing unit 12 is housed inside the box, and an LED lighting lamp 34 is provided at the front end of the box.

[0060] The upper end of the outer housing 14 is fastened to an upper cover 15, on which are mounted the measuring ruler 13 and the central processing unit of the operation panel (the measuring ruler 13, the operation panel, and the central processing unit of the operation panel are all conventional components). The upper plastic cover 15 can be equipped with an operation display panel and keypad 16, and the side can be equipped with a manual measuring ruler 13 for measuring tires.

[0061] The upper cover 15 is made of plastic.

[0062] The lower ends of the balancing machine spindle 10 are mounted on the balancing machine body 1 via support plates 11. Pressure sensors 3 are mounted on the balancing machine body 1 via sensor support plates 2. Two pressure sensors 3 are installed between the sensor support plates 2 and the balancing machine spindle 10. Two pressure sensors 3 are provided, one for each support plate 11. The "pressure sensor" structure described in Patent No. 201621179014.5, entitled "A Manual Vehicle Tire Balancing Machine," can be used to detect the force applied to the balancing machine spindle 10.

[0063] The balancing machine main shaft 10 is provided with a motor stator assembly 35

[0064] The inner wall of the rear hole of the balancing machine rotor assembly 5 is connected to the outer wall of the front of the balancing machine main shaft 10 through the front bearing 62 and the rear bearing 63. The balancing machine rotor assembly 5 rotates around the balancing machine main shaft 10.

[0065] The balancing machine can be fixed on a workbench through the balancing machine body 1 (it can be fixed on the workbench through the connection holes on the bottom plate of the balancing machine body 1), or it can be installed on a tire changer or a wall through the support arm 30, support rod 32, and adjustable support base 33.

[0066] The braking mechanism 4 is used to brake the wheel when the central processor 12 calculates the imbalance value and position and displays them on the panel (calculating the imbalance value is a conventional technology, and the braking mechanism 4 is mechanically assisted to lock the balancing machine rotor assembly 5). The imbalance point is braked to facilitate the lead-sticking operation.

[0067] The main structure of the balancing machine rotor assembly 5 of the present invention can adopt the same structure as the "balancing shaft rotating sleeve 13", "screw 21" and "hexagon socket bolt 22" in patent No. 201621179014.5, entitled "A Manual Balancing Machine for Vehicle Tires".

[0068] The hand-cranked quick-release nut 6 and the centering cone 7 of this application can adopt the same structure as that in patent number 201621179014.5, entitled "A vehicle-mounted manual tire balancing machine".

[0069] The computer board, measuring ruler 13, operation panel and related connection methods of this application can adopt the same structure as that in patent number 201621179014.5, entitled "A vehicle-mounted manual tire balancing machine".

[0070] The working process of the present invention will be described below with reference to the accompanying drawings.

[0071] Install the support arm 30 on the tire changer 50, meshing the teeth 28 with the teeth 29 on the end face of the sleeve. Adjust the working angle of the balancing machine by clamping it with the hand nut 31, and adjust the height using the adjustable support base 33. Center the car tire 60 with the appropriate cone 7 and secure it to the balancing machine rotor assembly 5 using the hand-cranked quick-release nut 6. Connect the power supply through the power socket 18, turn on the power switch, and the machine will enter the working state. Release the brake handle 9, allowing the balancing machine rotor assembly 5 to rotate freely. Measured data is manually entered using a manual ruler 13 and entered into the operating display panel keypad 16. The tire's diameter and width are then entered sequentially. The handle of the manual quick-release nut 6 is cranked with one hand to accelerate tire rotation. When the rotation reaches 100 rpm, the operating display panel keypad 16 and buzzer simultaneously prompt the operator to remove the hand, signaling the start of the test phase. After a few seconds, the operating display panel keypad 16 and buzzer simultaneously signal the end of the test phase. Manually operate the brake handle 9 to slow the tire until it stops. Once the imbalance point is located, the brake is applied, locking the tire in place. Lead leveling is then performed at the designated imbalance point. When the tire is at the imbalance point, an auxiliary LED light 34 or laser light illuminates the tire to indicate the location (this can employ a structure similar to the LED lighting and laser indication described in Patent No. 202020292095.X, entitled "A Balancing Machine Connection Structure").

[0072] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the scope of protection of the present invention.

Claims

1. A car tire balancing machine, comprising a balancing machine body (1), a balancing machine spindle (10) and a pressure sensor (3) being provided on the balancing machine body (1), the front end of the balancing machine spindle (10) being connected to the rear end of the balancing machine rotor assembly (5); characterized in that A brake control component of the balancing machine rotor assembly (5) is also provided; The balancing machine main shaft (10) is provided with a driving motor for driving the balancing machine rotor assembly (5) to rotate; The driving motor comprises a motor stator assembly (35), a neodymium iron boron magnetic steel sheet (36) and a motor end cover (37), wherein the motor stator assembly (35) is fixed to the balancing machine main shaft (10) as a whole by interference fit; the balancing machine rotor assembly (5) serves as the rotor of the driving motor, and a brake disc (24) used in conjunction with a brake control component is provided on the outer side of the balancing machine rotor assembly (5); the motor stator assembly (35) is provided on the inner side of the rear end of the balancing machine rotor assembly (5), and a neodymium iron boron magnetic steel sheet (36) is provided on the inner wall of the rear end of the balancing machine rotor assembly (5); a motor end cover (37) is provided on the rear side of the balancing machine rotor assembly (5), and the outer ring of the motor end cover (37) is connected to the rear end of the balancing machine rotor assembly (5) by a fastener, and the inner ring of the motor end cover (37) is connected to the photoelectric disk (8) by a fastener, and the balancing machine main shaft (10) passes through the photoelectric disk (8); a photoelectric plate (38) used in conjunction with the photoelectric disk (8) is provided on the balancing machine main shaft (10); The front end of the balancing machine rotor assembly (5) is connected to the centering cone (7) and the hand-cranked quick-release nut (6) in sequence. The brake control component includes a brake handle (9), a brake support (22) and a brake bracket (21). One end of the brake bracket (21) is hinged to the brake support (22) through a bolt (39). The brake block (23) is installed on the brake bracket (21). The other end of the brake bracket (21) is hinged to one end of the brake connecting rod (20). The brake connecting rod The other end of (20) is hinged to the connecting hinge seat (19), the connecting hinge seat (19) is threadedly connected to one end of the slide rod (25), and the other end of the slide rod (25) is hinged to the brake handle (9) through a pin (40); the sliding sleeve (26) is fixed to the outer cover (14) of the box body, the slide rod (25) is mounted on the sliding sleeve (26) and slides, and the sliding sleeve (26) has a hinge hole hinged to one end of the connecting rod (27), and the other end of the connecting rod (27) is hinged to the brake handle (9); The brake mechanism (4) adopts a double crank slider structure, the connecting rod (27) serves as a crank, the slide rod (25) serves as a slide, the brake bracket (21) serves as a crank, and the brake handle (9) adopts a centrifugal crank slider mechanism. The center line of the slide rod (25) passes through the axis of the connecting rod (27) and has two self-locking points to provide brake holding and separation holding; The brake block adopts an offset crank slider mechanism, and the center line of the slide rod (25) does not exceed the axis of the brake bracket (21); the brake is released and maintained, and the center line of the slide rod (25) coincides with the center line of the connecting rod of the brake handle (9) and the connecting rod (27). The brake handle (9) is rotated counterclockwise by hand, and the connecting rod (27) swings counterclockwise, and the slide rod (25) moves linearly outward along the sliding sleeve (26), driving the brake connecting rod (20) to swing, and the brake connecting rod (20) drives the brake bracket (21) to be bolted ( 39) is rotated clockwise, the brake block (23) on the brake bracket (21) approaches the brake disc (24) and holds it tightly, so that the balance rotor assembly (5) is braked; the hand-held brake handle (9) is rotated counterclockwise until the center line of the slide bar (25) coincides with the center line of the connecting rod of the brake handle (9) and the connecting rod (27) again, and the brake holding state is entered; the hand-held brake handle (9) is rotated clockwise, and the above brake-related parts move in the opposite direction, and the brake is released until the brake is released and held.

2. A tire balancing machine according to claim 1, characterized in that The balancing machine body (1) is provided with a connecting component that is detachably connected to the tire changing machine (50).

3. A tire balancing machine according to claim 2, characterized in that The connecting component is arranged at the lower end of the balancing machine body (1).

4. The automobile tire balancing machine according to claim 2, characterized in that The connecting component includes a main shaft (42), the upper end of the main shaft (42) is connected to the balancing machine body (1) through a connecting seat (41), the lower end of the main shaft (42) is inserted into a shaft sleeve (44), the shaft sleeve (44) is arranged on the support arm (30), the upper part of the main shaft (42) is provided with teeth (28), and the outer side of the shaft sleeve (44) is provided with shaft sleeve end face teeth (29); the lower end of the main shaft (42) is connected to the upper end of the screw (43), a hand nut (31) is screwed on the screw (43), and the upper end surface of the hand nut (31) and the lower end surface of the support arm (30) are interaction surfaces.

5. The automobile tire balancing machine according to claim 4, characterized in that A support rod (32) is provided at the lower end of the support arm (30), and an adjustable support seat (33) is provided at the lower end of the support rod (32).

6. The automobile tire balancing machine according to claim 1, characterized in that The balancing machine body (1) is provided with a box cover (14), the balancing machine main shaft (10), the drive motor, the pressure sensor (3) and the brake control component are arranged inside the box cover (14), and the operating end of the brake control component is arranged outside the box cover (14).

7. The automobile tire balancing machine according to claim 1, characterized in that The lower ends of both sides of the balancing machine main shaft (10) are arranged on the balancing machine body (1) through support plates (11), and the pressure sensor (3) is arranged on the balancing machine body (1) through a sensor support plate (2). The pressure sensor (3) is arranged between the sensor support plate (2) and the balancing machine main shaft (10); there are two pressure sensors (3), and each support plate (11) is correspondingly provided with one pressure sensor (3).

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