Inner circle run-out detection device of automobile brake drum

Abstract

The utility model discloses an inner circle run-out detection device of an automobile brake drum, which comprises a detection base, the upper surface of the detection base is rotatably connected with a turntable through a rotary column, the upper surface of the turntable is provided with the automobile brake drum, and the right end of the detection base is rotatably connected with an inner circle run-out detection plate. The device further comprises a limiting mechanism. The limiting mechanism comprises sliding grooves and limiting inclined plates, the sliding grooves are formed in the upper surface of the rotating disc, and according to the inner circle run-out detection device of the automobile brake drum, the automobile brake drum is rapidly limited on the detection device through synchronous opening of the four limiting inclined plates; compared with the mode that the automobile brake drum is directly placed on the surface of the detection disc for detection, the position of the automobile brake drum is more stable in the detection process while rapid feeding and discharging are guaranteed and the detection efficiency is improved, and the accuracy of the detection result of the automobile brake drum is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile brake drum, concretely is a kind of inner circle runout detection device of automobile brake drum. BACKGROUND

[0002] Automobile brake drum is one of the main components of drum brake, its scientific name is brake drum, is called brake drum for short, brake drum is the key component in drum brake system, main function is to generate braking force by friction when braking, so that the wheel slows down or stops, to ensure the safety of driving, in the production process of automobile brake drum, to ensure the production quality of automobile brake drum, after production, still need to use detection device to detect the inner circle runout of automobile brake drum;In prior art, grant publication No.CN 220250892U proposes a kind of inner circle runout detection device of automobile brake drum, lower strut is fixedly connected with chassis by screw C, the included angle of the upper surface of lower strut and horizontal plane is α, upper support is fixed on the upper surface of lower strut by connecting bolt, support disc is fixedly installed on the upper portion of upper support by nut, a center shaft is installed on support disc, the axis of center shaft is on the same pitch circle, each center shaft is equipped with bearing, cross bar passes through lower strut, and is fastened with screw A, the through hole of cross bar is passed through the lower end of vertical rod, and is fastened with screw B, the upper end of vertical rod is inclined rod, the included angle of inclined rod and horizontal plane is α, the middle part of measuring rod is hinged with inclined rod by pin shaft, measuring head is fixedly installed at one end of measuring rod, although the inner circle runout of automobile brake drum can be detected, to ensure the rapidness of feeding and discharging, automobile brake drum is directly placed on the surface of detection disc, the position of automobile brake drum is not stable enough in the detection process, influence the accuracy of detection result. UTILITARIAN CONTENT

[0003] The utility model solves the technical problem to overcome the existing defects, provide a kind of inner circle runout detection device of automobile brake drum, quickly limit automobile brake drum on detection device, ensure the rapidness of feeding and discharging, improve detection efficiency, make automobile brake drum position more stable in the process of detection, ensure the accuracy of automobile brake drum detection result, can effectively solve the problems in background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of inner circle runout detection device of automobile brake drum, including detection base, the upper surface of detection base is rotationally connected with carousel by rotating column, the upper surface of carousel is placed with automobile brake drum, the right end of detection base is rotationally connected with inner circle runout detection plate, further including limiting mechanism;

[0005] The limiting mechanism comprises a sliding groove and a limiting inclined plate, the sliding groove is arranged on the upper surface of the rotating disc, the limiting inclined plate is slidably connected in the four sliding grooves arranged in a ring around the center axis of the rotating disc, the four limiting inclined plates are drivingly connected, the limiting inclined plate is matched with the automobile brake drum, the automobile brake drum is quickly limited on the detection device by the synchronous opening of the four limiting inclined plates, compared with the detection mode that the automobile brake drum is directly placed on the surface of the detection disc, the position of the automobile brake drum is more stable during the detection, and the detection efficiency is improved while the rapid feeding and discharging is ensured.

[0006] Further, the limiting mechanism further comprises a rotating groove, an adjusting rotating disc and a sliding column, the rotating groove is arranged in the interior of the rotating disc, the lower end of the sliding groove is communicated with the rotating groove, the adjusting rotating disc is rotatably connected in the interior of the rotating groove, the sliding column is arranged on the lower surface of the limiting inclined plate, and the sliding column is horizontally slidably connected with the planar spiral groove of the adjusting rotating disc, so that the four limiting inclined plates are synchronously moved.

[0007] Further, the limiting mechanism further comprises an inner hexagonal pipe, an outer hexagonal plate, a screw rod and a knob, the inner hexagonal pipe is rotatably connected in the interior of the rotating groove through a rotating bearing, the adjusting rotating disc is arranged on the outer arc surface of the inner hexagonal pipe, the outer hexagonal plate is vertically slidably connected in the interior of the inner hexagonal pipe, the upper surface of the outer hexagonal plate is provided with the screw rod, the screw rod is threadedly connected with the screw hole in the surface of the rotating disc, the upper end of the screw rod penetrates through the interior of the rotating disc and is provided with the knob, and the adjusting rotating disc is rotated.

[0008] Further, the front surface of the detection base is provided with a single-chip microcomputer, the input end of the single-chip microcomputer is electrically connected with an external power supply, and the starting and stopping of the whole device are controlled.

[0009] Further, the rotating column is rotatably connected in the rotating hole in the upper surface of the detection base through a bearing, the lower end of the rotating column is provided with a worm wheel, the interior of the detection base is provided with a motor, the output shaft of the motor is provided with a worm, the worm is meshingly connected with the worm wheel, the input end of the motor is electrically connected with the output end of the single-chip microcomputer, and power is provided for the rotation of the rotating disc.

[0010] Further, the bottom wall of the detection base is provided with an electric push rod, the upper end of the telescopic end of the electric push rod is provided with a rotating frame, the lower end of the inner circle runout detection plate is rotatably connected between the front and rear inner walls of the rotating frame through a rotating shaft II, the upper end of the inner circle runout detection plate penetrates through the accommodation groove in the upper surface of the detection base, the outer arc surfaces of the front and rear ends of the rotating shaft II are movably sleeved with torsional springs, one end of the torsional spring away from the inner circle runout detection plate is fixedly connected with the rotating frame, the other end of the torsional spring is fixedly connected with the inner circle runout detection plate, and the input end of the electric push rod is electrically connected with the output end of the single-chip microcomputer, so that the position of the upper end of the inner circle runout detection plate is adjusted.

[0011] Further, the side of the rotating frame is provided with an angle sensor, the detection end of the angle sensor is fixedly connected with the rotating shaft two, and the output end of the angle sensor is electrically connected to the input end of the single-chip microcomputer.

[0012] Compared with the prior art, the automobile brake drum inner circle run-out detection device has the following advantages:

[0013] By synchronous opening of the four limiting inclined plates, the automobile brake drum is quickly limited on the detection device, compared with the mode that the automobile brake drum is directly placed on the surface of the detection disc for detection, the position of the automobile brake drum is more stable during detection, the accuracy of the automobile brake drum detection result is ensured, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the whole device of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the whole device of the utility model;

[0016] Figure 3 It is an enlarged structural schematic diagram of A of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the inner circle run-out detection plate of the utility model.

[0018] In the figure: 1 detection base, 2 rotating column, 3 rotating disc, 4 automobile brake drum, 5 inner circle run-out detection plate, 6 limiting mechanism, 61 sliding groove, 62 limiting inclined plate, 63 rotating groove, 64 adjusting rotating disc, 65 sliding column, 66 inner hexagonal tube, 67 outer hexagonal plate, 68 screw rod, 69 knob, 7 angle sensor, 8 torsional spring, 9 single-chip microcomputer, 10 worm gear, 11 motor, 12 worm, 13 electric push rod, 14 rotating frame. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figures 1-4The embodiment provides a technical scheme: an inner circle run-out detection device of an automobile brake drum, which comprises a detection base 1, which provides support for the arrangement of an automobile brake drum inner circle run-out detection component, the upper surface of the detection base 1 is rotationally connected with a rotating disc 3 through a rotating column 2, the rotating disc 3 is arranged at the upper end of the rotating column 2, the rotating disc 3 is driven to rotate through the rotating column 2, the upper surface of the rotating disc 3 is placed with an automobile brake drum 4, the right end of the detection base 1 is rotationally connected with an inner circle run-out detection plate 5, the inner circle run-out detection plate 5 is used for detecting the inner circle run-out of the automobile brake drum 4 in the rotating process, the front surface of the detection base 1 is provided with a single-chip microcomputer 9, the input end of the single-chip microcomputer 9 is electrically connected with an external power supply, the starting and stopping of the whole device are controlled, the rotating column 2 is rotationally connected in the rotating hole on the upper surface of the detection base 1 through a bearing, the lower end of the rotating column 2 is provided with a worm wheel 10, the inside of the detection base 1 is provided with a motor 11, the output shaft end of the motor 11 is provided with a worm 12, the worm 12 is meshingly connected with the worm wheel 10, the input end of the motor 11 is electrically connected with the output end of the single-chip microcomputer 9, the motor 11 is started, the output shaft of the motor 11 drives the worm 12 to rotate, the meshing connection of the worm 12 and the worm wheel 10 enables the worm wheel 10 to drive the rotating column 2 and the rotating disc 3 to rotate, the bottom wall of the detection base 1 is provided with an electric push rod 13, the extension end of the electric push rod 13 is provided with a rotating frame 14, the lower end of the inner circle run-out detection plate 5 is rotationally connected between the front and back inner walls of the rotating frame 14 through a rotating shaft two, the upper end of the inner circle run-out detection plate 5 passes through the accommodation groove on the upper surface of the detection base 1, the outer arc surfaces of the front and back ends of the rotating shaft two are movably sleeved with torsional springs 8, one end of the torsional springs 8 away from the inner circle run-out detection plate 5 is fixedly connected with the rotating frame 14, the other end of the torsional springs 8 is fixedly connected with the inner circle run-out detection plate 5, the side surface of the rotating frame 14 is provided with an angle sensor 7, the detection end of the angle sensor 7 is fixedly connected with the rotating shaft two, the output end of the angle sensor 7 is electrically connected with the input end of the single-chip microcomputer 9, the input end of the electric push rod 13 is electrically connected with the output end of the single-chip microcomputer 9, before the automobile brake drum 4 is fed, the right side inner wall of the accommodation groove of the detection base 1 affects and blocks the clockwise rotation of the inner circle run-out detection plate 5, at this moment, the lower end position of the inner circle run-out detection plate 5 is fixed, the horizontal position of the upper end of the inner circle run-out detection plate 5 is limited, the feeding of the automobile brake drum 4 is not blocked, the feeding is facilitated, after the feeding of the automobile brake drum 4 is completed, the electric push rod 13 is started, the extension end of the electric push rod 13 drives the rotating frame 14 to move upwards, the clockwise rotation of the inner circle run-out detection plate 5 is provided with an accommodation space, under the torsional force of the torsional spring 8, the upper end of the inner circle run-out detection plate 5 moves away from the rotating column 2 until the upper end of the inner circle run-out detection plate 5 contacts the inner circle of the automobile brake drum 4, in the rotating process of the automobile brake drum 4, the run-out of the inner circle of the automobile brake drum 4 will drive the inner circle run-out detection plate 5 to rotate, the rotating angle of the inner circle run-out detection plate 5 is detected through the angle sensor 7, the detection of the inner circle run-out of the automobile brake drum 4 is realized, the upper end of the inner circle run-out detection plate 5 is provided with a contact sensor,The upper end of the inner circle runout detection plate 5 is in contact with the inner circle of the automobile brake drum 4, and further comprises a limiting mechanism 6.

[0021] The limiting mechanism 6 comprises a sliding groove 61 and a limiting inclined plate 62. The sliding groove 61 is arranged on the upper surface of the rotating disc 3, and the limiting inclined plate 62 is slidably connected in the four sliding grooves 61 arranged in a ring shape around the center axis of the rotating disc 3. The four limiting inclined plates 62 are drivingly connected, and the limiting inclined plate 62 is matched with the automobile brake drum 4. By moving the four limiting inclined plates 62 in the direction away from the center of the rotating disc 3 with the same amplitude, the limiting inclined plate 62 is in contact with the automobile brake drum 4, and the horizontal direction of the automobile brake drum 4 is limited by the four limiting inclined plates 62, so that the center axis of the automobile brake drum 4 is collinear with the center axis of the rotating disc 3. At the same time, the automobile brake drum 4 is pressed on the upper surface of the rotating disc 3 by the inclined surface of the limiting inclined plate 62, so that the automobile brake drum 4 is quickly limited. The limiting mechanism 6 further comprises a rotating groove 63, an adjusting rotating disc 64 and a sliding column 65. The rotating groove 63 is arranged in the interior of the rotating disc 3, and the lower end of the sliding groove 61 is communicated with the rotating groove 63. The adjusting rotating disc 64 is rotatably connected in the interior of the rotating groove 63. The sliding column 65 is arranged on the lower surface of the limiting inclined plate 62, and the sliding column 65 is horizontally slidably connected with the plane spiral groove of the adjusting rotating disc 64. When the adjusting rotating disc 64 rotates, the sliding column 65 slides in the plane spiral groove of the adjusting rotating disc 64, and drives the four limiting inclined plates 62 to move in the direction away from the center of the rotating disc 3 with the same amplitude. The limiting mechanism 6 further comprises an inner hexagonal pipe 66, an outer hexagonal plate 67, a screw rod 68 and a knob 69. The inner hexagonal pipe 66 is rotatably connected in the interior of the rotating groove 63 by a rotating bearing. The adjusting rotating disc 64 is arranged on the outer arc surface of the inner hexagonal pipe 66. The outer hexagonal plate 67 is vertically slidably connected in the interior of the inner hexagonal pipe 66. The upper surface of the outer hexagonal plate 67 is provided with the screw rod 68. The screw rod 68 is threadedly connected with the screw hole on the surface of the rotating disc 3. The upper end of the screw rod 68 penetrates the interior of the rotating disc 3 and is provided with the knob 69. The screw rod 68 is rotated by the knob 69. The screw rod 68 drives the outer hexagonal plate 67 to rotate and move downward by the thread connection between the screw rod 68 and the screw hole on the surface of the rotating disc 3. The outer hexagonal plate 67 vertically slides with the inner hexagonal pipe 66, and drives the inner hexagonal pipe 66 and the adjusting rotating disc 64 to rotate.

[0022] The working principle of the inner circle run-out detection device of the automobile brake drum is as follows: before the automobile brake drum is detected, the limiting inclined plates 62 are located close to the center of the turntable 3, the distance between the outer end of the limiting inclined plate 62 and the center of the turntable 3 is smaller than the radius of the inner arc surface of the automobile brake drum 4, at the same time, the limiting inclined plate 62 is affected by the right inner wall of the accommodation groove of the detection base 1, and the clockwise rotation of the inner circle run-out detection plate 5 is blocked, at this time, the lower end position of the inner circle run-out detection plate 5 is fixed, the horizontal position of the upper end of the inner circle run-out detection plate 5 is limited, the upper end of the inner circle run-out detection plate 5 exists a distance with the inner arc surface of the automobile brake drum 4 in the horizontal direction, and the automobile brake drum 4 is not blocked during feeding, then the automobile brake drum 4 is placed on the upper surface of the turntable 3, after the placing is completed, the screw rod 68 is rotated through the knob 69, the screw rod 68 is connected with the screw hole on the surface of the turntable 3 through screw thread connection, the outer hexagonal plate 67 is rotated and moved downward under the action of the screw rod 68, the outer hexagonal plate 67 and the inner hexagonal tube 66 vertically slide relative to each other, the inner hexagonal tube 66 and the adjusting turntable 64 are rotated at the same time, the slide column 65 slides in the planar spiral groove of the adjusting turntable 64, and four limiting inclined plates 62 are synchronously and with the same amplitude moved away from the center of the turntable 3, when the limiting inclined plates 62 are in contact with the automobile brake drum 4, the horizontal direction of the automobile brake drum 4 is limited through the four limiting inclined plates 62, the center axis of the automobile brake drum 4 is collinear with the center axis of the turntable 3, at the same time, the automobile brake drum 4 is pressed and held on the upper surface of the turntable 3 through the inclined surface of the limiting inclined plate 62, and the automobile brake drum 4 is quickly limited, then the electric push rod 13 is started through the single-chip microcomputer 9, the telescopic end of the electric push rod 13 drives the rotating frame 14 to move upward, and a space is provided for the clockwise rotation of the inner circle run-out detection plate 5, under the action of the torsion force of the torsional spring 8, the upper end of the inner circle run-out detection plate 5 moves away from the rotating column 2, until the upper end of the inner circle run-out detection plate 5 is in contact with the inner circle of the automobile brake drum 4, then the motor 11 is started, the output shaft of the motor 11 drives the worm 12 to rotate, the worm 12 is connected with the worm wheel 10 through meshing, the worm wheel 10 drives the rotating column 2 and the turntable 3 to rotate, and the automobile brake drum 4 is rotated, in the rotating process, the run-out of the inner circle of the automobile brake drum 4 drives the inner circle run-out detection plate 5 to rotate, the rotating angle of the inner circle run-out detection plate 5 is detected through the angle sensor 7, the detection of the inner circle run-out of the automobile brake drum 4 is realized, after the detection is completed, the knob 69 is reversely rotated by personnel, the four limiting inclined plates 62 move towards the center of the turntable 3, and a space is provided for the upward movement and unloading of the automobile brake drum 4.

[0023] It is worth noting that the single-chip microcomputer 9 disclosed in the above embodiment can be selected from a single-chip microcomputer of a PIC7F1823-I / P type, and the motor 11, the electric push rod 13 and the angle sensor 7 can be freely configured according to actual application scenarios, the motor 11 can be selected from a stepping motor of an LS60A30 type, the electric push rod 13 can be selected from an electric push rod of an ANT-52 type, and the angle sensor 7 can be selected from an angle sensor of an HW225D type, and the single-chip microcomputer 9 controls the motor 11, the electric push rod 13 and the angle sensor 7 to work by using a method commonly used in the prior art.

[0024] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A kind of inner circle run-out detection device of automobile brake drum, including detection base (1), the upper surface of the detection base (1) is rotatably connected with rotating disc (3) by rotating column (2), the upper surface of rotating disc (3) is placed with automobile brake drum (4), the right end of detection base (1) is rotatably connected with inner circle run-out detection plate (5), it is characterized by: It also includes a limiting mechanism (6); Limiting mechanism (6): It includes a sliding groove (61) and a limiting inclined plate (62). The sliding groove (61) is respectively set on the upper surface of the turntable (3). The four sliding grooves (61) are arranged in a ring around the central axis of the turntable (3) and the limiting inclined plate (62) is slidably connected in each of them. The four limiting inclined plates (62) are connected in a transmission. The limiting inclined plates (62) are all installed in conjunction with the car brake drum (4).

2. A device for detecting the run-out of an inner circle of a brake drum of a vehicle according to claim 1, characterized in that: The limiting mechanism (6) further includes a rotating groove (63), an adjusting turntable (64), and a sliding column (65). The rotating groove (63) is located inside the turntable (3). The lower ends of the sliding grooves (61) are all connected to the rotating groove (63). The adjusting turntable (64) is rotatably connected inside the rotating groove (63). The sliding columns (65) are respectively located on the lower surface of the limiting inclined plate (62). The sliding columns (65) are all horizontally slidably connected to the planar spiral groove of the adjusting turntable (64).

3. A device for detecting the run-out of an inner circle of a brake drum of a vehicle according to claim 2, characterized in that: The limiting mechanism (6) also includes an inner hexagonal tube (66), an outer hexagonal plate (67), a screw (68), and a knob (69). The inner hexagonal tube (66) is rotatably connected to the inside of the rotating groove (63) through a rotary bearing. The adjusting turntable (64) is set on the outer arc surface of the inner hexagonal tube (66). The outer hexagonal plate (67) is vertically slidably connected inside the inner hexagonal tube (66). The screw (68) is provided in the middle of the upper surface of the outer hexagonal plate (67). The screw (68) is threadedly connected to the screw hole on the surface of the turntable (3). The upper end of the screw (68) passes through the inside of the turntable (3) and is provided with a knob (69).

4. The apparatus for detecting the run-out of the inner circle of a brake drum of an automobile as set forth in claim 1, wherein: The front surface of the detection base (1) is provided with a microcontroller (9), and the input terminal of the microcontroller (9) is electrically connected to an external power source.

5. A device for detecting the run-out of an inner circle of a brake drum of a vehicle according to claim 4, characterized in that: The rotating column (2) is rotatably connected to the rotating hole on the upper surface of the detection base (1) through a bearing. The lower end of the rotating column (2) is provided with a worm gear (10). The inside of the detection base (1) is provided with a motor (11). The output shaft of the motor (11) is provided with a worm (12). The worm (12) is meshed with the worm gear (10). The input end of the motor (11) is electrically connected to the output end of the microcontroller (9).

6. A device for detecting the inner roundness run-out of a brake drum of a vehicle as set forth in claim 4, characterized in that: The bottom wall of the detection base (1) is provided with an electric push rod (13). The upper end of the telescopic end of the electric push rod (13) is provided with a rotating frame (14). The lower end of the inner circle runout detection plate (5) is rotatably connected between the front and rear inner walls of the rotating frame (14) through a rotating shaft. The upper end of the inner circle runout detection plate (5) passes through the clearance groove on the upper surface of the detection base (1). Both the front and rear ends of the outer arc of the rotating shaft are movably fitted with torsion springs (8). The end of the torsion spring (8) away from the inner circle runout detection plate (5) is fixedly connected to the rotating frame (14). The other end of the torsion spring (8) is fixedly connected to the inner circle runout detection plate (5). The input end of the electric push rod (13) is electrically connected to the output end of the microcontroller (9).

7. A device for detecting the run-out of an inner circle of a brake drum of a vehicle according to claim 6, characterized in that: An angle sensor (7) is provided on the side of the rotating frame (14). The detection end of the angle sensor (7) is fixedly connected to the rotating shaft, and the output end of the angle sensor (7) is electrically connected to the input end of the microcontroller (9).

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