Hub balance detection equipment

Abstract

The invention relates to the technical field of hub detection, and discloses hub balance detection equipment which comprises a supporting unit, a roundness detection unit and a warning alarm unit. According to the marking device, when the roundness of the surface of a hub cannot meet the requirement, the hub can extrude an ejector rod to move downwards, the ejector rod moves downwards to drive a clamping block at the tail end to move, the clamping block slides on a guide block, then the position of a marking pen on the guide block is driven to change, a worm can further drive a lead screw shaft to rotate, and the marking pen is driven to rotate. The storage hopper and the grid paper are driven to move through the lead screw lantern ring, then a curve can be drawn on the grid paper through the marking pen, whether the roundness of the hub meets the requirement or not can be obtained by observing whether the difference between the highest point and the lowest point of the curve is within a reasonable range or not, it is guaranteed that the balance degree is kept when the hub rotates, and the service life of the hub is prolonged. The detection of the roundness can be completed in a mechanical mode, the reliability is higher, and the later maintenance cost is low.

Description

Technical Field

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

[0002] Whether a vehicle runs smoothly is an important criterion for judging the comfort of the vehicle. In addition to ensuring the normal operation of the vehicle's buffering system, the balance of the vehicle's wheel hubs is also an important factor. Since certain errors will occur during the production process of the wheel hubs, resulting in the wheel hubs not being a perfect circle, generally, errors within the allowable range will not affect the normal driving of the vehicle. When the error exceeds the limit value, the vehicle will bounce during driving. On the one hand, it will affect the comfort during the vehicle's driving process, and on the other hand, it will also reduce the driver's controllability of the vehicle, and it is easy to have an accident during high-speed driving. Therefore, the roundness balance of the wheel hubs needs to be detected.

[0003] When the existing wheel hubs are subjected to balance detection, they are generally detected by dynamic balance equipment. Among them, the dynamic balancer measures the key phase signal and vibration signal of the rotor through facilities such as vibration sensors, photoelectric sensors, angle reference signal generating devices, and vector synthesis installed thereon, so as to calculate the phase and magnitude of the unbalance amount.

[0004] However, it is found during actual use that with long-term use, electronic components are extremely prone to damage after reaching their service life. When damage occurs, new components need to be replaced, resulting in an increase in the cost of equipment maintenance and repair in the later stage. And when the above-mentioned equipment detects that the wheel hub does not meet the requirements, it gives a warning through a buzzer. Among them, the buzzer also belongs to electronic components and is likely to be damaged easily. When the buzzer is damaged, the equipment cannot give an alarm, and thus may not be able to timely remind the operator of the detection result of the wheel hub.

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

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A wheel hub balance detection device includes a support unit, a roundness detection unit, and a warning and alarm unit.

[0007] The support unit includes an operating table; The roundness detection unit includes a worm and a worm wheel that mesh with each other. A wheel hub is installed at the rotation center of the worm wheel, and a detection component is provided at the bottom of the wheel hub. The detection component includes a top rod that fits with the wheel hub and slides vertically. A block is installed at the bottom of the top rod. A guide block is slidably arranged on the block, and a marker pen is installed at the bottom of the guide block; A displacement component that slides horizontally is installed at the rotation center of the worm. The displacement component includes a grid paper that slides horizontally, and the marker pen is attached to the grid paper. The warning and alarm unit includes a swing rod movably installed at one end on the ejector rod. A sound plate that slides horizontally is installed at the other end of the swing rod. A synchronization component is also installed on the worm gear. The synchronization component includes a turntable that rotates coaxially with the worm gear, and several pairs of paddles adapted to the sound plate are installed on the turntable.

[0008] As a preferred embodiment of the present invention, a side plate is installed on the back of the operating table. A positioning cover is installed on the operating table. Four support legs are installed at the bottom of the operating table. Reinforcing ribs are installed on adjacent support legs, and the heights of adjacent reinforcing ribs are different. Two operating doors are installed on the positioning cover. A handle is installed on each operating door, and an anti-slip sleeve is sleeved on the handle.

[0009] As a preferred embodiment of the present invention, a driving motor is installed on the side wall of the side plate. A rotating shaft is installed at the output end of the driving motor. A mounting seat is movably welded at the end of the rotating shaft, and the mounting seat is installed on the side plate. A worm is installed on the outer wall of the rotating shaft.

[0010] 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 hub. The bolt rods are inserted into the hub, and a locking nut is screwed at the end of the bolt rod. An L-shaped bracket for positioning is movably sleeved on the outer wall of the transmission shaft.

[0011] As a preferred embodiment of the present invention, the displacement component includes a lead screw shaft. The lead screw shaft is connected to the rotation center of the worm. A lead screw collar is sleeved on the lead screw shaft. A push plate is installed at the bottom of the lead screw collar. A storage hopper is installed on the push plate, and a grid paper is installed on the storage hopper. A bearing is installed at the end of the lead screw shaft, and the bearing is clamped on the bearing seat. The bearing seat is welded on the side wall of the side plate. A limit guide rail is installed on the inner wall of the side plate. The limit guide rail is horizontally distributed, and the length of the limit guide rail is the same as the length of the lead screw shaft. The lead screw collar slides on the limit guide rail. A magnetic block is adsorbed on the storage hopper, and the grid paper is clamped between the magnetic block and the storage hopper.

[0012] As a preferred embodiment of the present invention, an arched bracket is installed at the top of the ejector rod. A guide wheel is installed at the end of the arched bracket. The guide wheel is attached to the bottom of the wheel hub. The outer wall of the ejector rod vertically penetrates through the partition movably. 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 through 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.

[0013] As a preferred embodiment of the present invention, a positioning seat is installed at the rotation center of the swing rod. A strip-shaped notch is formed on one side of the swing rod. The side of the swing rod with the strip-shaped notch is inserted into the installation notch formed on the ejector rod. A slide rod is installed through the installation notch. The slide rod slides in the strip-shaped notch. The other side of the swing rod is movably connected to a pull plate. A synchronous bracket is installed on the pull plate. A sounding plate is rotatably installed on the synchronous bracket.

[0014] As a preferred embodiment of the present invention, a positioning chute is formed on the surface of the pull plate. A positioning slider is slidably arranged on the positioning chute. The positioning slider is movably connected to the swing rod. A plug rod is installed on the back of the pull plate. The plug rod is inserted into the inside of the telescopic sleeve. The telescopic sleeve is installed on the inner wall of the side plate.

[0015] As a preferred embodiment of the present invention, the synchronous bracket is L-shaped. An inner groove is formed on the synchronous bracket. The sounding plate is movably installed on the inner groove. A torsion spring is installed on the rotation center of the sounding plate. One end of the torsion spring is clamped on the inner groove and the sounding plate.

[0016] As a preferred embodiment of the present invention, the synchronous component includes a driving gear. The driving gear is connected to the rotation center of the worm gear. A driven gear is engaged with the driving gear. A gear shaft is installed at the rotation center of the driven gear. The end of the gear shaft is connected to the rotation center of the turntable. The side walls of the driving gear and the driven gear are covered with a protective cover. An installation ear is welded on the side wall of the protective cover. The installation ear is convenient for later connection.

[0017] The present invention has the following beneficial effects compared with the prior art: By providing a roundness detection unit, the worm and worm wheel drive of the roundness detection unit 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 ejector rod to move downward. The downward movement of the ejector rod can drive the movement of the chuck at the end. The chuck slides on the guide block, thereby driving the change of the position of the marker pen on the guide block. And the worm drives the grid paper to move through the displacement component, so that the marker pen can draw a curve on the grid paper. By observing whether the difference between the highest point and the lowest point of the curve is within a reasonable range, it can be obtained whether the roundness of the hub meets the requirements, ensuring the balance when the hub rotates. The present invention can complete the roundness detection by mechanical means, with stronger reliability and lower later maintenance cost.

[0018] By providing a warning and alarm unit, when the ejector rod moves, it can drive the swing rod to move. The swing rod drives the sound plate to move towards the turntable. When the movement range of the ejector rod exceeds the standard, at this time the sound plate can contact the paddle on the turntable, and at the same time the synchronous component drives the turntable to rotate. The paddle on the turntable strikes the sound plate, and the strike can produce a harsh sound to complete the alarm operation. By this mechanical method, the reliability of the warning can be ensured, and the situation of the alarm module failing due to the damage of electronic components is reduced.

[0019] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0020] In the drawings: Figure 1 is a three-dimensional structure schematic diagram of a hub balance detection device; Figure 2 is an overall structure schematic diagram of a hub balance detection device; Figure 3 is a Figure 2 rear structure schematic diagram of a hub balance detection device; Figure 4 is a partial structure schematic diagram of a hub balance detection device; Figure 5 is a partial enlarged view of a hub balance detection device; Figure 6 is a Figure 4 rear structure schematic diagram of a hub balance detection device; Figure 7 is a Figure 6 enlarged view of part A in a hub balance detection device.

[0021] In the figure: 100. Support unit; 101. Operating table; 1011. Side plate; 1012. Protective cover; 1013. Mounting ear; 102. Support leg; 1021. Reinforcing rib; 103. Positioning cover; 1031. Operating door; 1032. Handle; 1033. Partition; 200. Roundness detection unit; 201. Driving motor; 2011. Rotating shaft; 2012. Mounting seat; 202. Worm; 2021. Worm gear; 2022. L-shaped bracket; 203. Transmission shaft; 2031. Baffle; 2032. Bolt rod; 2033. Locking nut; 205. Lead screw shaft; 2051. Bearing seat; 2052. Lead screw collar; 2053. Limit guide rail; 2054. Pusher plate; 206. Storage hopper; 2061. Grid paper; 2062. Magnetic block; 207. Thrust rod; 2071. Arch-shaped bracket; 2072. Guide wheel; 2073. Block; 208. Guide rod; 2081. Return spring; 2082. Guide block; 2083. Marking pen; 300. Warning and alarm unit; 301. Swing rod; 3011. Positioning seat; 3012. Strip-shaped notch; 3013. Mounting notch; 3014. Slide bar; 302. Pulling plate; 3021. Positioning chute; 3022. Positioning slider; 303. Telescopic sleeve; 3031. Plug rod; 304. Synchronous support; 3041. Inner groove; 3042. Sound plate; 3043. Torsion spring; 305. Driving gear; 3051. Driven gear; 3052. Gear shaft; 306. Turntable; 3061. Paddle; 400. Wheel hub. Specific embodiments

[0022] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0023] Embodiment 1: As Figures 1 to 7 shown, a wheel hub balance detection device includes a support unit 100, a roundness detection unit 200 and a warning and alarm unit 300. The support unit 100 includes an operating table 101; The roundness detection unit 200 includes a worm 202 and a worm gear 2021 that mesh with each other. A wheel hub 400 is installed at the rotation center of the worm gear 2021, and a detection assembly is provided at the bottom of the wheel hub 400. The detection assembly includes a thrust rod 207 that fits and vertically slides with the wheel hub 400. A block 2073 is installed at the bottom of the thrust rod 207. A guide block 2082 is slidably arranged on the block 2073, and a marking pen 2083 is installed at the bottom of the guide block 2082; A displacement component that slides horizontally is installed at the rotation center of the worm 202. The displacement component includes a horizontally sliding grid paper 2061, and the marker pen 2083 is attached to the grid paper 2061. The rotation of the worm and the worm gear 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 ejector rod downward. The downward movement of the ejector rod can drive the movement of the block at the end. The block slides on the guide block, thereby driving the change in the position of the marker pen on the guide block. And the worm drives the grid paper to move through the displacement component, so that the marker pen can draw a curve on the grid paper. By observing whether the difference between the highest point and the lowest point of the curve is within a reasonable range, it can be obtained whether the roundness of the hub meets the requirements, ensuring the balance when the hub rotates. The present invention can complete the detection of roundness through a mechanical method, with stronger reliability and lower later maintenance costs.

[0024] The warning and alarm unit 300 includes a swing rod 301 with one end movably installed on the ejector rod 207. A horizontally sliding sounding plate 3042 is installed at the other end of the swing rod 301. A synchronous component is also installed on the worm gear 2021. The synchronous component includes a turntable 306 that rotates coaxially with the worm gear. A number of pairs of sliders 3061 adapted to the sounding plate 3042 are installed on the turntable 306. When the ejector rod moves, it can drive the swing rod to move. The swing rod drives the sounding plate to move towards the turntable. When the moving range of the ejector rod exceeds the standard, the sounding plate can contact the sliders on the turntable. At the same time, the synchronous component drives the turntable to rotate, and the sliders on the turntable strike the sounding plate, producing a harsh sound to complete the alarm operation. Through this mechanical method, the reliability of the warning can be ensured, reducing the occurrence of the situation where the alarm module fails due to the damage of electronic components.

[0025] As Figure 2 and Figure 3 As shown, in the specific implementation, a side plate 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 at the bottom of the operating table 101. 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. A handle 1032 is installed on each operating door 1031, and an anti-slip sleeve is sleeved on the handle 1032. The operating door 1031 can be opened through the handle 1032. At this time, the operator can reach into the positioning cover 103 through the opened gap to replace the grid paper 2061.

[0026] As Figure 4 、 Figure 5 and Figure 6As shown, further, a drive motor 201 is installed on the side wall of the side plate 1011. The housing of the drive motor 201 is installed on the side wall of the side plate 1011. A rotating shaft 2011 is installed at the output end of the drive motor 201. An installation seat 2012 is movably welded at the end of the rotating shaft 2011, and the installation seat 2012 is installed on the side plate 1011. A worm 202 is installed on the outer wall of the rotating shaft 2011. The drive motor 201 drives the rotating shaft 2011 connected to the output shaft to rotate. The rotating shaft 2011 rotates on the installation seat 2012, and a worm 202 is installed on the rotating shaft 2011. A worm gear 2021 is meshed with the worm 202, and at this time, the worm gear 2021 itself rotates.

[0027] Embodiment 2: The difference from the above embodiment in this embodiment is: As Figure 4 , Figure 5 and Figure 6 shown, a transmission shaft 203 is installed at the center of the worm gear 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 number of pairs of bolt rods 2032 are installed on the baffle 2031. The number and specifications of the bolt rods 2032 correspond to the spiral holes opened on the wheel hub 400. The bolt rods 2032 are inserted into the wheel hub 400. A locking nut 2033 is screwed at the end of the bolt rod 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 on the side wall of the side plate 1011. The spiral holes on the wheel hub 400 and the bolt rods 2032 are corresponded and inserted. The bottom of the wheel hub 400 and the baffle 2031 are mutually attached, and are locked by the locking nut 2033 to ensure that the wheel hub 400, the baffle 2031 and the transmission shaft 203 rotate synchronously.

[0028] As Figure 4 , Figure 5 and Figure 6As shown, in the specific implementation manner, the shifting component includes a lead screw shaft 205, the lead screw shaft 205 is connected to the rotation center of the worm 202, a lead screw collar 2052 is arranged on the lead screw shaft 205, a push plate 2054 is installed at the bottom of the lead screw collar 2052, a receiving hopper 206 is installed on the push plate 2054, a grid paper 2061 is installed on the receiving hopper 206, a bearing is installed at the end of the lead screw shaft 205, the bearing is clamped on a bearing seat 2051, the bearing seat 2051 is welded to the side wall of the side plate 1011, 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 lead screw shaft 205, the lead screw collar 2052 is slidably arranged on the limiting guide rail 2053, a magnetic block 2062 is adsorbed on the receiving hopper 206, and the grid paper 2061 is clamped between the magnetic block 2062 and the receiving hopper 206. When the worm 202 rotates, the worm 202 can drive the lead screw shaft 205 to rotate in the bearing seat 2051, and the lead screw collar 2052 is meshed on the lead screw shaft 205, the lead screw collar 2052 is limited by the limiting guide rail 2053, the lead screw collar 2052 can move, the lead screw collar 2052 can pull the push plate 2054 to move, thereby driving the receiving hopper 206 and the grid paper 2061 at the end of the push plate 2054 to move horizontally, and at the same time, the marker pen 2083 moves, and thus a curve can be drawn. When the roundness of the wheel hub 400 is worse, the moving distance of the marker pen 2083 is larger at this time, and the difference between the highest point and the lowest point in the drawn curve is larger. When the difference is greater than the standard value, the roundness of the wheel hub 400 does not meet the requirements at this time, and using the wheel hub 400 that does not reach the roundness affects the balance during the driving of the vehicle.

[0029] As Figure 4 , Figure 5 and Figure 6As shown, further, an arch bracket 2071 is installed on the top of the push rod 207, and a guide wheel 2072 is installed at the end of the arch bracket 2071. The guide wheel 2072 is attached to the bottom of the wheel hub 400. The outer wall of the push rod 207 can vertically penetrate the baffle 1033, and the baffle 1033 is installed on the side wall of the positioning cover 103. A guide rod 208 is installed between the inner wall of the baffle 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, and one end of the return spring 2081 is clamped on the baffle 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, and 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 can move when it is squeezed by the block 2073, and 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, and during the movement of the guide block 2082, the position of the bottom marker 2083 on the grid paper 2061 moves synchronously.

[0030] Embodiment 3: Based on the above embodiment, the difference between this embodiment and the present embodiment is that: Figure 4 , Figure 5 and Figure 6 As shown, a positioning seat 3011 is installed at the rotation center of the swing 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 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, and a slide bar 3014 is installed through the installation notch 3013, and the slide bar 3014 slides in the strip-shaped notch 3012. A pull plate 302 is movably connected to the other side of the swing rod 301, and a pull plate 302 is installed on the pull plate 302. The synchronous bracket 304 has a ring (3042 rotatably mounted on the synchronous bracket 304. When the top rod 207 moves upward or downward, the slide bar 3014 inside the top rod 207 can drive the swing rod 301 to swing on the positioning seat 3011, and the slide bar 3014 slides in the strip-shaped notch 3012. Since the swing rod 301 is initially in a horizontal state, the end of the swing rod 301 as a whole moves toward the side of the grid paper 2061 regardless of whether the swing rod 301 rotates counterclockwise or clockwise.

[0031] As Figure 4 , Figure 5 and Figure 6 shown, a positioning sliding groove 3021 is formed on the surface of the pull plate 302. A positioning slider 3022 is slidably arranged on the positioning sliding groove 3021. The positioning slider 3022 is movably connected to the swing rod 301. A plug rod 3031 is installed on the back surface of the pull plate 302. The plug rod 3031 is inserted into the telescopic sleeve 303. The telescopic sleeve 303 is installed on the inner wall of the side plate 1011. During the rotation of the swing rod, the end of the swing rod 301 pulls the positioning slider 3022 to slide inside the positioning sliding groove 3021, pulling the entire pull plate 302 to move towards the side of the marker pen 2083. The pull plate 302 drives the plug rod 3031 to move out of the telescopic sleeve 303, and the plug rod 3031 and the telescopic sleeve 303 are used to limit the entire pull plate 302.

[0032] As Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, in the specific implementation manner, the synchronization component includes a driving gear 305. The driving gear 305 is connected to the rotation center of the worm wheel 2021. A driven gear 3051 is meshed with 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 connected to 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. An installation ear 1013 is welded on the side wall of the protective cover 1012. The installation ear 1013 is connected to the side plate 1011 through bolts. During the rotation of the worm wheel 2021, the worm wheel 2021 can drive the driving gear 305 to rotate. 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 connected turntable 306 and the paddle 3061 to rotate. The paddle 3061 rotates and continuously knocks the sounding board 3042 to achieve the purpose of alarm and warning. After the sounding board 3042 is knocked, it automatically flips, and the torsion spring 3043 facilitates the later reset.

[0033] The implementation principle of a wheel hub balance detection device in this embodiment is as follows: 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.

[0034] First, align the spiral holes on the wheel hub 400 with the bolt rods 2032 and insert them. Fit the bottom of the wheel hub 400 with the baffle 2031, and lock it with the locking nut 2033 to ensure that the wheel hub 400, the baffle 2031, and the transmission shaft 203 rotate synchronously.

[0035] 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 meshed on 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.

[0036] 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, and 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 can move when it is squeezed by the block 2073, and 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, and during the movement of the guide block 2082, the position of the bottom marker 2083 on the grid paper 2061 moves synchronously.

[0037] 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 meshed 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 then a curve can be drawn. The worse the roundness of the wheel hub 400 is, the greater the moving distance of the marker 2083 is, and the greater the difference between the highest point and the lowest point in the drawn curve is. 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.

[0038] During the upward or downward movement of the ejector rod 207, the slide rod 3014 inside the ejector rod 207 can drive the swing rod 301 to swing on the positioning seat 3011, and the slide rod 3014 slides in the strip-shaped notch 3012. Since the initial state of the swing rod 301 is horizontal, whether the swing rod 301 rotates counterclockwise or clockwise, at this time, the end of the swing rod 301 pulls the positioning slider 3022 to slide inside the positioning chute 3021, pulling the entire pull plate 302 to move towards the side of the marker pen 2083. The pull plate 302 drives the insertion rod 3031 to move out of the telescopic sleeve 303, and the insertion rod 3031 and the telescopic sleeve 303 are used to limit the entire pull plate 302.

[0039] The movement of the pull plate 302 drives the synchronous bracket 304 at the end to move towards the paddle 3061 of the turntable 306. When the roundness of the hub 400 does not meet the requirements, the movement range of the ejector rod 207 is large, and the rotation angle of the pull swing rod 301 is large, so that the sound plate 3042 at the end of the synchronous bracket 304 can move to the paddle 3061.

[0040] During the rotation of the worm gear 2021, the worm gear 2021 can drive the driving gear 305 to rotate. The driving gear 305 drives the driven gear 3051 to rotate, and the gear shaft 3052 of the driven gear 3051 rotates synchronously, thereby driving the connected turntable 306 and paddle 3061 to rotate. The continuously rotating paddle 3061 strikes the sound plate 3042 to achieve the purpose of alarm and warning, and the sound plate 3042 automatically flips after being struck, which is convenient for later resetting 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) comprises an operating table (101); The roundness detection unit (200) comprises 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 (221), and a detection assembly being arranged at the bottom of the hub (400), the detection assembly comprising a push rod (207) being fitted with the hub (400) and vertically sliding, a clamping block (2073) being mounted at the bottom of the push rod (2077), a guide block (2082) being slidably mounted on the clamping block (2073), and a marking pen (2083) being mounted at the bottom of the guide block (2082); A horizontally sliding displacement component is installed at the rotation center of the worm (202), the displacement component includes a horizontally sliding grid paper (2061), and the marking pen (2083) is attached to the grid paper (2061); The warning alarm unit (300) comprises a swing rod (301) with one end movably mounted on a top rod (207), a sound board (3042) being mounted on the other end of the swing rod (301) and being arranged to slide horizontally, and a synchronization component being mounted on the worm wheel (2021), the synchronization component comprising a rotating disk (306) rotating coaxially with the worm wheel, and a plurality of pairs of paddles (3061) being mounted on the rotating disk (306) and being adapted to the sound board (3042).

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

3. A 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 (212) is movably welded at the end of the rotating shaft (2011), and the mounting seat (212) 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 specification of the bolt rods (2032) correspond to the spiral holes provided on the wheel hub (400), the bolt rods (2032) are plugged into the wheel hub (400), 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 displacement 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 arranged 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 arranged on the limiting guide rail (2053), and 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 arch support (2071) is installed at the top of the push rod (207), a guide wheel (2072) is installed at the end of the arch support (2071), and the guide wheel (2072) is attached to the bottom of the wheel hub (400). The outer wall of the push rod (207) movably and vertically penetrates the partition (1033), and 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), and the guide rod (208) penetrates the guide block (2082). A return spring (2081) is sleeved on the guide rod (208), and 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 a mounting notch (3013) opened on the top rod (207), a sliding rod (3014) is installed through the mounting 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 sound board (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 swing rod (301), an insertion rod (3031) is installed on the back of the pull plate (302), the insertion rod (3031) is inserted into the inside 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 formed on the synchronous bracket (304). A sound board (3042) is movably mounted on the inner groove (3041). A torsion spring (3043) is mounted on the rotation center of the sound board (3042), and one end of the torsion spring (3043) is clamped on the inner groove (3041) and the sound board (3042).

10. The wheel hub balance detection device according to claim 1, characterized in that: The synchronization component comprises a driving gear (305), wherein the driving gear (305) is connected to the rotation center of the worm gear (2021), a driven gear (3051) is arranged on the driving gear (305), a gear shaft (3052) is installed at the rotation center of the driven gear (3051), and the end of the gear shaft (3052) is connected to the rotation center of the turntable (306), and 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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