A wheel hub balance detection device

Abstract

The present invention relates to the field of wheel hub detection technology, and discloses a wheel hub balance detection device, comprising a support unit, a roundness detection unit, and a warning alarm unit. According to the present invention, when the roundness of the wheel hub surface does not meet the requirements, the wheel hub will squeeze the push rod to move downward, and the downward movement of the push rod can drive the clamping block at the end to move, and the clamping block slides on the guide block, thereby driving the position of the marker on the guide block to change, and the worm can also drive the screw shaft to rotate, and drive the storage bucket and grid paper to move through the screw ring, so that the marker can draw a curve on the grid paper, wherein the difference between the highest point and the lowest point of the curve is observed to be within a reasonable range, and then it can be obtained whether the roundness of the wheel hub meets the requirements, ensuring that the wheel hub maintains balance when rotating. The present invention can complete the roundness detection in a mechanical way, which is more reliable and has low maintenance costs in the later stage.

Description

Technical Field

[0001] The present invention belongs to the technical field of wheel hub detection, and in particular relates to a wheel hub balance detection device. Background Art

[0002] Whether a car runs smoothly is a major criterion for judging its comfort. In addition to ensuring that the car's buffer system can work properly, the balance of the car's wheel hub is also an important factor. Due to certain errors in the production process of the wheel hub, the wheel hub is not a perfect circle. Generally, the error within the allowable range will not affect the normal driving of the car. When the error exceeds the limit, the car will jump while driving. On the one hand, it will affect the comfort of the car during driving. On the other hand, it will reduce the driver's control over the car, which is prone to accidents during high-speed driving. Therefore, the wheel hub needs to be tested for roundness and balance.

[0003] When performing balance testing on existing wheel hubs, dynamic balancing equipment is generally used for testing. The dynamic balancing machine measures the rotor key phase signal and vibration signal through installed vibration sensors, photoelectric sensors, angle reference signal generators, vector synthesis and other facilities, thereby calculating the phase and magnitude of the imbalance.

[0004] However, in actual use, it was found that with long-term use, electronic components are prone to damage after reaching their service life. When damage occurs, new components need to be replaced, which increases the cost of subsequent maintenance of the equipment. In addition, when the above-mentioned equipment detects that the wheel hub does not meet the requirements, it will issue an alarm through a buzzer. The buzzer is also an electronic component and may be prone to damage. When the buzzer is damaged, the equipment cannot alarm, and may not be able to promptly remind the operator of the wheel hub inspection results.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A wheel hub balance detection device comprises a support unit, a roundness detection unit and a warning alarm unit.

[0008] The support unit includes an operating table;

[0009] The roundness detection unit includes a worm and a worm wheel that mesh with each other, a hub is installed at the rotation center of the worm wheel, and a detection assembly is provided at the bottom of the hub, the detection assembly includes a push rod that fits with the hub and slides vertically, a clamping block is installed at the bottom of the push rod, a guide block is slidably provided on the clamping block, and a marker is installed at the bottom of the guide block;

[0010] A horizontally sliding shift assembly is installed at the rotation center of the worm, and the shift assembly includes a horizontally sliding grid paper, and the marker is attached to the grid paper;

[0011] The warning alarm unit includes a rocker arm with one end movably mounted on a top rod, a soundboard arranged to slide horizontally is mounted on the other end of the rocker arm, and a synchronization component is also mounted on the worm gear, the synchronization component includes a turntable rotating coaxially with the worm gear, and a plurality of pairs of paddles adapted to the soundboard are mounted on the turntable.

[0012] As a preferred embodiment of the present invention, a side panel is installed on the back of the operating table, a positioning cover is installed on the operating table, four supporting legs are installed on the bottom of the operating table, reinforcing ribs are installed on adjacent supporting legs, and the heights of adjacent reinforcing ribs are different, two operating doors are installed on the positioning cover, each operating door is installed with a handle, and the handle is covered with an anti-slip sleeve.

[0013] As a preferred embodiment of the present invention, a drive motor is installed on the side wall of the side panel, a rotating shaft is installed on the output end of the drive motor, a mounting seat is movably welded at the end of the rotating shaft, and the mounting seat is installed on the side panel, and a worm is installed on the outer wall of the rotating shaft.

[0014] As a preferred embodiment of the present invention, a transmission shaft is installed at the center of the worm gear, a transmission shaft is installed at the end of the transmission shaft, a baffle is installed at the end of the transmission shaft, several pairs of bolt rods are installed on the baffle, and the number and specifications of the bolt rods correspond to the spiral holes opened on the wheel hub, and the bolt rods are inserted into the wheel hub, a locking nut is screwed on the end of the bolt rod, and an L-shaped bracket for positioning is movably sleeved on the outer wall of the transmission shaft.

[0015] As a preferred embodiment of the present invention, the shift assembly includes a screw shaft, which is connected to the worm rotation center, and a screw collar is provided on the screw shaft, a push plate is installed at the bottom of the screw collar, a storage bucket is installed on the push plate, and a grid paper is installed on the storage bucket, and a bearing is installed at the end of the screw shaft, and the bearing is clamped on the bearing seat, the bearing seat is welded to the side wall of the side plate, and a limiting guide rail is installed on the inner wall of the side plate, the limiting guide rail is horizontally distributed, and the length of the limiting guide rail is the same as the length of the screw shaft, and the screw collar is slidably set on the limiting guide rail, a magnetic block is adsorbed on the storage bucket, and the grid paper is clamped between the magnetic block and the storage bucket.

[0016] As a preferred embodiment of the present invention, an arched bracket is installed on the top of the push rod, a guide wheel is installed on the end of the arched bracket, the guide wheel is attached to the bottom of the wheel hub, the outer wall of the push rod is movable and vertically penetrates the partition, the partition is installed on the side wall of the positioning cover, a guide rod is installed between the inner wall of the partition and the positioning cover, the guide rod penetrates the guide block, a return spring is sleeved on the guide rod, one end of the return spring is clamped on the partition, and the other end of the return spring is clamped on the guide block.

[0017] As a preferred embodiment of the present invention, a positioning seat is installed at the rotation center of the rocker arm, a strip-shaped notch is provided on one side of the rocker arm, and the side of the rocker arm with the strip-shaped notch is inserted into the installation notch provided on the top rod, a sliding rod is installed through the installation notch, and the sliding rod slides in the strip-shaped notch, and a pull plate is movably connected to the other side of the rocker arm, a synchronous bracket is installed on the pull plate, and a soundboard is rotatably installed on the synchronous bracket.

[0018] As a preferred embodiment of the present invention, a positioning groove is provided on the surface of the pull plate, a positioning slider is slidably provided on the positioning groove, the positioning slider is movably connected to the rocker arm, an insertion rod is installed on the back of the pull plate, the insertion rod is inserted into the telescopic sleeve, and the telescopic sleeve is installed on the inner wall of the side panel.

[0019] As a preferred embodiment of the present invention, the synchronous bracket is L-shaped, and an inner groove is provided on the synchronous bracket. A soundboard is movably mounted on the inner groove, and a torsion spring is mounted on the rotation center of the soundboard, and one end of the torsion spring is clamped on the inner groove and the soundboard.

[0020] As a preferred embodiment of the present invention, the synchronization assembly includes a driving gear, which is interconnected with the worm gear rotation center, a driven gear is arranged on the driving gear, a gear shaft is installed on the driven gear rotation center, and the end of the gear shaft is interconnected with the turntable rotation center, the side walls of the driving gear and the driven gear are covered with a protective cover, and the side walls of the protective cover are welded with mounting ears, and the mounting ears facilitate later connection.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By providing a roundness detection unit, the worm and worm gear of the roundness detection unit drive the rotation of the wheel hub to be tested. When the roundness of the wheel hub surface does not meet the required roundness, the wheel hub will squeeze the push rod downward. The downward movement of the push rod drives the clamping block at the end to move. The clamping block slides on the guide block, which in turn changes the position of the marker on the guide block. The worm drives the grid paper through the shift assembly, allowing the marker to draw a curve on the grid paper. The difference between the highest and lowest points of the curve is observed to determine whether the roundness of the wheel hub meets the required range, ensuring that the wheel hub maintains balance during rotation. The present invention can complete roundness testing through a mechanical method, which is more reliable and has low subsequent maintenance costs.

[0023] By providing a warning alarm unit, when the top rod moves, it can drive the rocker arm to move, and the rocker arm drives the soundboard to move toward the turntable. When the movement range of the top rod exceeds the standard, the soundboard can contact the paddle on the turntable, and at the same time, the synchronization component drives the turntable to rotate, and the paddle on the turntable knocks the soundboard, which can produce a harsh sound and complete the alarm operation. This mechanical method can ensure the reliability of the warning and reduce the occurrence of alarm module failure due to damage to electronic components.

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the attached figure:

[0026] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a wheel hub balance detection device;

[0027] Figure 2 The figure is a schematic diagram of the overall structure of a wheel hub balance detection device;

[0028] Figure 3 A wheel balance detection device Figure 2 Back structure diagram;

[0029] Figure 4 It is a partial structural diagram of a wheel hub balance detection device;

[0030] Figure 5 This is a partial enlarged view of a wheel hub balance detection device;

[0031] Figure 6 A wheel balance detection device Figure 4 Back structure diagram;

[0032] Figure 7 A wheel balance detection device Figure 6 Enlarged view of point A in the middle.

[0033] In the picture:

[0034] 100, support unit; 101, operating table; 1011, side panel; 1012, protective cover; 1013, mounting ears; 102, supporting legs; 1021, reinforcing ribs; 103, positioning cover; 1031, operating door; 1032, handle; 1033, partition;

[0035] 200, roundness detection unit; 201, drive motor; 2011, rotating shaft; 2012, mounting seat; 202, worm; 2021, worm wheel; 2022, L-shaped bracket; 203, transmission shaft; 2031, baffle; 2032, bolt rod; 2033, locking nut; 205, screw shaft; 2051, bearing seat; 2052, screw collar; 2053, limit guide rail; 2054, push plate; 206, storage bucket; 2061, grid paper; 2062, magnetic block; 207, ejector rod; 2071, arch bracket; 2072, guide wheel; 2073, clamping block; 208, guide rod; 2081, return spring; 2082, guide block; 2083, marker pen;

[0036] 300, warning alarm unit; 301, swing arm; 3011, positioning seat; 3012, strip-shaped notch; 3013, mounting notch; 3014, slide bar; 302, pull plate; 3021, positioning slot; 3022, positioning slider; 303, telescopic sleeve; 3031, insertion rod; 304, synchronization bracket; 3041, inner groove; 3042, soundboard; 3043, torsion spring; 305, driving gear; 3051, driven gear; 3052, gear shaft; 306, turntable; 3061, paddle;

[0037] 400. Wheel hub. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0039] Example 1: Figures 1 to 7 As shown, a wheel hub balance detection device includes a support unit 100, a roundness detection unit 200 and a warning alarm unit 300.

[0040] The support unit 100 includes an operating table 101;

[0041] The roundness detection unit 200 includes a worm 202 and a worm wheel 2021 that mesh with each other. The hub 400 is mounted at the rotation center of the worm wheel 2021. A detection assembly is provided at the bottom of the hub 400. The detection assembly includes a push rod 207 that fits and slides vertically with the hub 400. A clamping block 2073 is mounted at the bottom of the push rod 207. A guide block 2082 is slidably mounted on the clamping block 2073. A marker pen 2083 is mounted at the bottom of the guide block 2082.

[0042] A horizontally sliding shift assembly is installed at the rotation center of the worm 202, and the shift assembly includes a horizontally sliding grid paper 2061, and the marker 2083 is fitted with the grid paper 2061; the transmission drive of the worm and the worm wheel drives the hub to be detected to rotate. When the roundness of the hub surface does not meet the requirements, the hub will squeeze the push rod to move downward. The downward movement of the push rod can drive the end block to move, and the block slides on the guide block, thereby driving the position of the marker on the guide block to change, and the worm drives the grid paper to move through the shift assembly, so that the marker can draw a curve on the grid paper, wherein the difference between the highest point and the lowest point of the curve is observed to be within a reasonable range, and then it can be obtained whether the roundness of the hub meets the requirements, ensuring that the hub maintains balance when rotating. The present invention can complete the roundness detection in a mechanical way, is more reliable, and has low maintenance costs in the later stage.

[0043] The warning alarm unit 300 comprises a rocker 301 with one end movably mounted on a top rod 207. A horizontally slidable sounding board 3042 is mounted on the other end of the rocker 301. A synchronization assembly is also mounted on the worm gear 2021. The synchronization assembly includes a turntable 306 that rotates coaxially with the worm gear. The turntable 306 is mounted on a plurality of pairs of paddles 3061 that mate with the sounding boards 3042. Movement of the top rod drives the rocker, which in turn drives the sounding boards toward the turntable. When the range of movement of the rocker exceeds a certain limit, the sounding boards come into contact with the paddles on the turntable. Simultaneously, the synchronization assembly drives the turntable to rotate, causing the paddles on the turntable to strike the sounding boards, producing a harsh sound and completing the alarm operation. This mechanical method ensures the reliability of the alarm and reduces the risk of alarm module failure due to damage to electronic components.

[0044] like Figure 2 and Figure 3As shown, in a specific embodiment, a side panel 1011 is installed on the back of the operating table 101, a positioning cover 103 is installed on the operating table 101, four support legs 102 are installed on the bottom of the operating table 101, and reinforcing ribs 1021 are installed on adjacent support legs 102, and the heights of adjacent reinforcing ribs 1021 are different. Two operating doors 1031 are installed on the positioning cover 103, and each operating door 1031 is installed on a handle 1032, and the handle 1032 is covered with an anti-slip cover. The operating door 1031 can be opened by the handle 1032. At this time, the operator can reach into the positioning cover 103 through the opened gap and replace the grid paper 2061.

[0045] like Figure 4 、 Figure 5 and Figure 6 As shown, further, a drive motor 201 is installed on the side wall of the side plate 1011, and the housing of the drive motor 201 is installed on the side wall of the side plate 1011. A rotating shaft 2011 is installed on the output end of the drive motor 201, and a mounting seat 2012 is movably welded to the end of the rotating shaft 2011, and the mounting seat 2012 is installed on the side plate 1011. A worm 202 is installed on the outer wall of the rotating shaft 2011. The driving motor 201 drives the rotating shaft 2011 connected to the output shaft to rotate, and the rotating shaft 2011 rotates on the mounting seat 2012, and the worm 202 is installed on the rotating shaft 2011, and the worm gear 2021 is meshed with the worm gear 2021, and the worm gear 2021 itself rotates.

[0046] Example 2: Based on the above example, the difference between this example and the above example is that: Figure 4 、 Figure 5 and Figure 6 As shown, a transmission shaft 203 is mounted at the center of the worm gear 2021. A transmission shaft 203 is mounted at the end of the transmission shaft 203. A baffle 2031 is mounted at the end of the transmission shaft 203. Several pairs of bolt rods 2032 are mounted on the baffle 2031. The number and specifications of the bolt rods 2032 correspond to the spiral holes provided in the wheel hub 400. The bolt rods 2032 are inserted into the wheel hub 400. Locking nuts 2033 are screwed onto the ends of the bolt rods 2032. An L-shaped bracket 2022 is movably sleeved on the outer wall of the transmission shaft 203. The L-shaped bracket 2022 is welded to the side wall of the side plate 1011. The spiral holes in the wheel hub 400 are aligned with the bolt rods 2032 and inserted into each other. The bottom of the wheel hub 400 and the baffle 2031 are then fitted together and locked with the locking nuts 2033 to ensure synchronous rotation of the wheel hub 400, the baffle 2031, and the transmission shaft 203.

[0047] like Figure 4 、 Figure 5 and Figure 6As shown, in a specific embodiment, the shift assembly includes a screw shaft 205, the screw shaft 205 and the rotation center of the worm 202 are connected to each other, the screw shaft 205 is provided with a screw collar 2052, the bottom of the screw collar 2052 is installed with a push plate 2054, the push plate 2054 is installed with a storage bucket 206, and the storage bucket 206 is installed with a grid paper 2061, and the end of the screw shaft 205 is installed with a bearing, and the bearing is clamped in the bearing On the seat 2051, the bearing seat 2051 is welded to the side wall of the side panel 1011, and a limiting guide rail 2053 is installed on the inner wall of the side panel 1011. The limiting guide rail 2053 is horizontally distributed, and the length of the limiting guide rail 2053 is the same as the length of the screw shaft 205, and the screw ring 2052 is slidably set on the limiting guide rail 2053. A magnetic block 2062 is adsorbed on the storage bucket 206, and the grid paper 2061 is clamped between the magnetic block 2062 and the storage bucket 206. When the worm 202 rotates, the worm 202 can drive the screw shaft 205 to rotate in the bearing seat 2051, and a screw ring 2052 is engaged on the screw shaft 205, and the screw ring 2052 is limited by the limiting guide rail 2053, and the screw ring 2052 can move. The screw ring 2052 can pull the push plate 2054 to move, thereby driving the storage bucket 206 and the grid paper 2061 at the end of the push plate 2054 to move horizontally, and at the same time, the marker 2083 moves, and a curve can be drawn. The worse the roundness of the wheel hub 400, the greater the moving distance of the marker 2083, and the greater the difference between the highest point and the lowest point in the drawn curve. When the difference is greater than the standard value, the roundness of the wheel hub 400 does not meet the requirements. Using a wheel hub 400 that does not meet the roundness affects the balance of the car during driving.

[0048] like Figure 4 、 Figure 5 and Figure 6As shown, further, an arched bracket 2071 is installed on the top of the top rod 207, and a guide wheel 2072 is installed at the end of the arched bracket 2071. The guide wheel 2072 is attached to the bottom of the wheel hub 400. The outer wall of the top rod 207 is movable and vertically penetrates the partition 1033. The partition 1033 is installed on the side wall of the positioning cover 103. A guide rod 208 is installed between the inner wall of the partition 1033 and the positioning cover 103. The guide rod 208 penetrates the guide block 2082. A return spring 2081 is sleeved on the guide rod 208. One end of the return spring 2081 is clamped on the partition 1033, and the other end of the return spring 2081 is clamped on the guide block 2082. During the rotation of the wheel hub 400, when the roundness of the surface of the wheel hub 400 does not meet the requirements, and the guide wheel 2072 is always in contact with the surface of the wheel hub 400, the rotation of the wheel hub 400 can drive the guide wheel 2072 to move upward or downward as a whole. The movement of the guide wheel 2072 drives the bottom arch bracket 2071 to move, and during the movement, the arch bracket 2071 drives the top rod 207 to move synchronously, and the block 2073 at the bottom of the top rod 207 is in contact with the guide block 2082, and the surfaces of the block 2073 and the guide block 2082 are both provided with an oblique angle. At this time, the guide block 2082 is squeezed by the block 2073 and can move. The guide block 2082 can always slide along the guide rod 208, and the return spring 2081 always lifts the guide block 2082 to fit the block 2073. During the movement of the guide block 2082, the position of the bottom marker 2083 on the grid paper 2061 moves synchronously.

[0049] Example 3: Based on the above embodiment, the difference between this embodiment and the above embodiment is that: Figure 4 、 Figure 5 and Figure 6 As shown, a positioning seat 3011 is installed at the rotation center of the pendulum rod 301, and the positioning seat 3011 is installed on the inner wall of the positioning cover 103. A strip-shaped notch 3012 is opened on one side of the pendulum rod 301, and the side of the pendulum rod 301 with the strip-shaped notch 3012 is inserted into the installation notch 3013 opened on the top rod 207. A slide rod 3014 is installed through the installation notch 3013, and the slide rod 3014 slides in the strip-shaped notch 3012. A pull plate 302 is movably connected to the other side of the pendulum rod 301, and a pull plate 302 is installed on the pull plate 302. The synchronous bracket 304 has a ring (3042) rotatably mounted thereon. During the upward or downward movement of the top rod 207, the slide bar 3014 inside the top rod 207 can drive the rocker 301 to swing on the positioning seat 3011, and the slide bar 3014 slides in the strip-shaped notch 3012. Since the rocker 301 is initially horizontal, the end of the rocker 301 as a whole moves toward the grid paper 2061 regardless of whether the rocker 301 rotates counterclockwise or clockwise.

[0050] like Figure 4 、 Figure 5 and Figure 6 As shown, the pull plate 302 has a positioning slot 3021 on its surface, on which a positioning slider 3022 is slidably mounted. The positioning slider 3022 is movably connected to the swing arm 301. A plug rod 3031 is mounted on the back of the pull plate 302. The plug rod 3031 is inserted into the interior of the telescopic sleeve 303, which is mounted on the inner wall of the side plate 1011. As the swing arm rotates, the end of the swing arm 301 pulls the positioning slider 3022 to slide within the positioning slot 3021, pulling the pull plate 302 as a whole toward the marker 2083. The pull plate 302 then drives the plug rod 3031 out of the telescopic sleeve 303, and the plug rod 3031 and the telescopic sleeve 303 are used to limit the position of the pull plate 302 as a whole.

[0051] like Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, in a specific embodiment, the synchronization component includes a driving gear 305, which is interconnected with the rotation center of the worm gear 2021, and a driven gear 3051 is provided on the driving gear 305. The rotation center of the driven gear 3051 is installed with a gear shaft 3052, and the end of the gear shaft 3052 is interconnected with the rotation center of the turntable 306. The side walls of the driving gear 305 and the driven gear 3051 are covered with a protective cover 1012, and the side walls of the protective cover 1012 are welded with mounting ears 1013, and the mounting ears 1013 are interconnected with the side plates 1011 by bolts. During the rotation of the worm gear 2021, the worm gear 2021 can drive the driving gear 305 to rotate, and the driving gear 305 drives the driven gear 3051 to rotate. The gear shaft 3052 of the driven gear 3051 rotates synchronously, thereby driving the mutually connected turntable 306 and the paddle 3061 to rotate. The rotation of the paddle 3061 continuously strikes the sound plate 3042 to achieve the purpose of alarm warning, and the sound plate 3042 automatically flips over after striking, and is convenient for later reset through the torsion spring 3043.

[0052] The implementation principle of a wheel hub balance detection device of this embodiment is as follows:

[0053] When it is necessary to detect the balance of the wheel hub 400 , the operator needs to install the wheel hub 400 on the transmission shaft 203 .

[0054] First, align the spiral hole on the hub 400 and the bolt rod 2032 with each other and plug them in, fit the bottom of the hub 400 and the baffle 2031 together, and lock them with the locking nut 2033 to ensure that the hub 400, the baffle 2031 and the transmission shaft 203 rotate synchronously.

[0055] Then the operator starts the drive motor 201, and the drive motor 201 drives the rotating shaft 2011 connected to the output shaft to rotate, and the rotating shaft 2011 rotates on the mounting seat 2012, and a worm 202 is installed on the rotating shaft 2011, and a worm wheel 2021 is engaged with the worm 202. At this time, the worm wheel 2021 itself rotates, and during the rotation of the worm wheel 2021, it can drive the coaxially connected transmission shaft 203 to rotate, and finally drive the hub 400 to rotate around the rotation center.

[0056] During the rotation of the wheel hub 400, when the roundness of the surface of the wheel hub 400 does not meet the requirements, and the guide wheel 2072 is always in contact with the surface of the wheel hub 400, the rotation of the wheel hub 400 can drive the guide wheel 2072 to move upward or downward as a whole. The movement of the guide wheel 2072 drives the bottom arch bracket 2071 to move, and during the movement, the arch bracket 2071 drives the top rod 207 to move synchronously, and the block 2073 at the bottom of the top rod 207 is in contact with the guide block 2082, and the surfaces of the block 2073 and the guide block 2082 are both provided with an oblique angle. At this time, the guide block 2082 is squeezed by the block 2073 and can move. The guide block 2082 can always slide along the guide rod 208, and the return spring 2081 always lifts the guide block 2082 to fit the block 2073. During the movement of the guide block 2082, the position of the bottom marker 2083 on the grid paper 2061 moves synchronously.

[0057] When the worm 202 rotates, the worm 202 can drive the screw shaft 205 to rotate in the bearing seat 2051, and a screw ring 2052 is engaged on the screw shaft 205, and the screw ring 2052 is limited by the limiting guide rail 2053, and the screw ring 2052 can move. The screw ring 2052 can pull the push plate 2054 to move, thereby driving the storage bucket 206 and the grid paper 2061 at the end of the push plate 2054 to move horizontally, and at the same time, the marker 2083 moves, and a curve can be drawn. The worse the roundness of the wheel hub 400, the greater the moving distance of the marker 2083, and the greater the difference between the highest point and the lowest point in the drawn curve. When the difference is greater than the standard value, the roundness of the wheel hub 400 does not meet the requirements. Using a wheel hub 400 that does not meet the roundness affects the balance of the car during driving.

[0058] When the top rod 207 moves upward or downward, the sliding rod 3014 inside the top rod 207 can drive the rocker arm 301 to swing on the positioning seat 3011, and the sliding rod 3014 slides in the strip-shaped notch 3012. Since the initial state of the rocker arm 301 is horizontal, no matter whether the rocker arm 301 rotates counterclockwise or clockwise, the end of the rocker arm 301 pulls the positioning slider 3022 to slide inside the positioning slot 3021, pulling the pull plate 302 as a whole to the side of the marker pen 2083, and the pull plate 302 drives the insertion rod 3031 to move out from the inside of the telescopic sleeve 303, and the pull plate 302 as a whole is limited by the insertion rod 3031 and the telescopic sleeve 303.

[0059] The movement of the pull plate 302 drives the synchronous bracket 304 at the end to move toward the paddle 3061 of the turntable 306. When the roundness of the wheel hub 400 does not meet the requirements, the movement range of the top rod 207 is large, and the angle of rotation of the rocker arm 301 is large, which can make the soundboard 3042 at the end of the synchronous bracket 304 move to the paddle 3061.

[0060] During the rotation of the worm gear 2021, the worm gear 2021 can drive the driving gear 305 to rotate, and the driving gear 305 drives the driven gear 3051 to rotate. The gear shaft 3052 of the driven gear 3051 rotates synchronously, thereby driving the mutually connected turntable 306 and the paddle 3061 to rotate. The rotation of the paddle 3061 continuously strikes the sound plate 3042 to achieve the purpose of alarm warning, and the sound plate 3042 automatically flips over after striking, and is convenient for later reset through the torsion spring 3043.

Claims

1. A wheel hub balance detection device, comprising a support unit (100), a roundness detection unit (200) and a warning alarm unit (300), characterized in that: The support unit (100) includes an operating table (101); The roundness detection unit (200) includes a worm (202) and a worm wheel (2021) meshing with each other, a hub (400) being mounted at the rotation center of the worm wheel (2021), and a detection assembly being disposed at the bottom of the hub (400), the detection assembly including a push rod (207) that fits the hub (400) and slides vertically, a clamping block (2073) being mounted at the bottom of the push rod (2073), a guide block (2082) being slidably mounted on the clamping block (2073), and a marker pen (2083) being mounted at the bottom of the guide block (2082); A horizontally sliding shift assembly is installed at the rotation center of the worm (202), the shift assembly includes a horizontally sliding grid paper (2061), and the marking pen (2083) is attached to the grid paper (2061); The warning alarm unit (300) includes a swing rod (301) with one end movably mounted on a top rod (207), a horizontally sliding soundboard (3042) mounted on the other end of the swing rod (301), and a synchronization component mounted on the worm gear (2021). The synchronization component includes a turntable (306) that rotates coaxially with the worm gear, and a plurality of pairs of paddles (3061) that are adapted to the soundboard (3042) are mounted on the turntable (306).

2. A wheel hub balance detection device according to claim 1, characterized in that: The operating table (101) is provided with a side panel (1011) on the back thereof, a positioning cover (103) is provided on the operating table (101), four supporting legs (102) are provided on the bottom of the operating table (101), adjacent supporting legs (102) are provided with reinforcing ribs (1021), and the heights of adjacent reinforcing ribs (1021) are different, two operating doors (1031) are provided on the positioning cover (103), each operating door (1031) is provided with a handle (1032), and the handle (1032) is sleeved with an anti-slip sleeve.

3. The wheel hub balance detection device according to claim 2, characterized in that: A driving motor (201) is installed on the side wall of the side plate (1011), a rotating shaft (2011) is installed on the output end of the driving motor (201), a mounting seat (2012) is movably welded at the end of the rotating shaft (2011), and the mounting seat (2012) is installed on the side plate (1011), and a worm (202) is installed on the outer wall of the rotating shaft (2011).

4. The wheel hub balance detection device according to claim 1, characterized in that: A transmission shaft (203) is installed at the center of the worm wheel (2021), a transmission shaft (203) is installed at the end of the transmission shaft (203), a baffle (2031) is installed at the end of the transmission shaft (203), a plurality of pairs of bolt rods (2032) are installed on the baffle (2031), and the number and specifications of the bolt rods (2032) correspond to the spiral holes opened on the wheel hub (400), and the bolt rods (2032) are plugged into the wheel hub (400), and a locking nut (2033) is screwed on the end of the bolt rod (2032), and an L-shaped bracket (2022) for positioning is movably sleeved on the outer wall of the transmission shaft (203).

5. The wheel hub balance detection device according to claim 1, characterized in that: The shift assembly comprises a screw shaft (205), the screw shaft (205) and the rotation center of the worm (202) are connected to each other, a screw collar (2052) is provided on the screw shaft (205), a push plate (2054) is installed at the bottom of the screw collar (2052), a storage bucket (206) is installed on the push plate (2054), and a grid paper (2061) is installed on the storage bucket (206), and a bearing is installed at the end of the screw shaft (205), and the bearing is clamped on the bearing seat (2051), and the bearing seat (2051) is welded to the side wall of the side plate (1011), and a limiting guide rail (2053) is installed on the inner wall of the side plate (1011). The limiting guide rail (2053) is horizontally distributed, and the length of the limiting guide rail (2053) is the same as the length of the screw shaft (205), and the screw ring (2052) is slidably set on the limiting guide rail (2053). A magnetic block (2062) is adsorbed on the storage bucket (206), and the grid paper (2061) is clamped between the magnetic block (2062) and the storage bucket (206).

6. The wheel hub balance detection device according to claim 1, characterized in that: An arched bracket (2071) is installed on the top of the push rod (207), and a guide wheel (2072) is installed on the end of the arched bracket (2071). The guide wheel (2072) is attached to the bottom of the wheel hub (400). The outer wall of the push rod (207) is movable and vertically penetrates the partition (1033). The partition (1033) is installed on the side wall of the positioning cover (103). A guide rod (208) is installed between the inner wall of the partition (1033) and the positioning cover (103). The guide rod (208) penetrates the guide block (2082). A return spring (2081) is sleeved on the guide rod (208). One end of the return spring (2081) is clamped on the partition (1033), and the other end of the return spring (2081) is clamped on the guide block (2082).

7. The wheel hub balance detection device according to claim 1, characterized in that: A positioning seat (3011) is installed at the rotation center of the swing rod (301), a strip-shaped notch (3012) is opened on one side of the swing rod (301), and the side of the swing rod (301) with the strip-shaped notch (3012) is inserted into the installation notch (3013) opened on the top rod (207), a sliding rod (3014) is installed through the installation notch (3013), and the sliding rod (3014) slides in the strip-shaped notch (3012), and a pull plate (302) is movably connected to the other side of the swing rod (301), a synchronous bracket (304) is installed on the pull plate (302), and a soundboard (3042) is rotatably installed on the synchronous bracket (304).

8. The wheel hub balance detection device according to claim 7, characterized in that: A positioning groove (3021) is provided on the surface of the pull plate (302), a positioning slider (3022) is slidably provided on the positioning groove (3021), the positioning slider (3022) is movably connected to the rocker (301), an insertion rod (3031) is installed on the back of the pull plate (302), the insertion rod (3031) is inserted into the interior of the telescopic sleeve (303), and the telescopic sleeve (303) is installed on the inner wall of the side plate (1011).

9. The wheel hub balance detection device according to claim 7, characterized in that: The synchronous bracket (304) is L-shaped, and an inner groove (3041) is provided on the synchronous bracket (304). A soundboard (3042) is movably mounted on the inner groove (3041). A torsion spring (3043) is mounted on the rotation center of the soundboard (3042), and one end of the torsion spring (3043) is clamped on the inner groove (3041) and the soundboard (3042).

10. The wheel hub balance detection device according to claim 1, characterized in that: The synchronization component includes a driving gear (305), the driving gear (305) and the rotation center of the worm gear (2021) are interconnected, a driven gear (3051) is provided on the driving gear (305), a gear shaft (3052) is installed at the rotation center of the driven gear (3051), the end of the gear shaft (3052) is interconnected with the rotation center of the turntable (306), the side walls of the driving gear (305) and the driven gear (3051) are covered with a protective cover (1012), and the side wall of the protective cover (1012) is welded with a mounting ear (1013), and the mounting ear (1013) is convenient for later connection.

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