A clamping device for testing the ductility of automobile wheels

Abstract

A clamping device for testing the ductility of an automobile wheel hub belongs to the technical field of steam turbine hub detection, and is designed to solve the problem that the existing testing device cannot clamp wheels of different sizes and the clamping is unstable. The utility model uses a bottom plate, the upper end of the bottom plate is fixedly connected to a placing table, and the side of the placing table is fixedly connected to a shielding cover, a servo motor is fixedly connected inside the shielding cover, and a driving gear is fixedly connected to the output end of the servo motor, a disc is rotatably connected in the groove opened by the placing table, and the placing table above the disc is provided with four straight grooves symmetrical in pairs, a slide groove is opened on the disc, and a slider is slidably connected in the slide groove, and the clamping device for testing the ductility of an automobile wheel hub can limit automobile wheel hubs of different sizes, improve detection efficiency, and at the same time, the wheel hub can be limited from top to bottom, left to right, to prevent the wheel hub from shifting during the detection process, and improve the accuracy of the detection result.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine hub detection, in particular to a clamping device for automobile hub ductility testing. Background Art

[0002] The automobile wheel hub is an important component of automobile parts. It supports the vehicle body and bears various forces and loads during vehicle driving. With the growth of China's automobile parts industry, the wheel hub industry has gradually developed and grown. The wheels on the market can be divided into steel wheels and alloy wheels according to the material, and each has its own advantages and disadvantages. In the production process, in order to simulate the various mechanical environments that automobile wheels may encounter during actual use, the ductility of the wheels must be accurately measured and analyzed. It is necessary to test the ductility of automobile wheels under specific conditions. However, the existing automobile wheel ductility testing device has certain shortcomings when used.

[0003] 1. Due to the particularity of the wheel hub shape, the fixture structure cannot adapt to the shape of the wheel hub well, resulting in inaccurate position of the wheel hub during the clamping process, thus affecting the accuracy of the test results. In addition, the clamping stiffness of the wheel hub is insufficient or the clamping is unstable when the wheel hub sidewall is clamped alone, which may cause the wheel hub to move or shake during the test, thereby affecting the stability and reliability of the test data.

[0004] 2. There are many types of cars in the modern automobile market, and the wheel sizes are also different. When faced with wheels of various sizes, users need to frequently replace the clamping device or adjust the clamping parameters, which increases the complexity and time cost of the operation. At the same time, frequent replacement and adjustment may also lead to a decrease in clamping accuracy, affecting the test results or processing quality.

[0005] Therefore, we propose a clamping device for automobile wheel hub ductility testing to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a clamping device for automobile wheel hub ductility testing, so as to solve the problem proposed by the above-mentioned background technology that the single clamping of the wheel hub side wall in the current market, the insufficient clamping stiffness of the clamp or the unstable clamping may cause the wheel hub to move or shake during the test, thereby affecting the stability and reliability of the test data and the need for users to frequently replace the clamping device or adjust the clamping parameters when facing various sizes of wheels, which increases the complexity of the operation and the time cost.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A clamping device for testing the ductility of an automobile wheel hub, comprising a bottom plate, a placing table is fixedly connected to the upper end of the bottom plate, and a shielding cover is fixedly connected to the side of the placing table, and a servo motor is fixedly connected inside the shielding cover;

[0008] Also includes:

[0009] The output end of the servo motor is fixedly connected with a driving gear;

[0010] A disc is rotatably connected in the groove of the placement table, and the placement table above the disc is provided with four straight grooves symmetrical in pairs, the disc is provided with a sliding groove, and a slider is slidably connected in the sliding groove, and a clamping assembly is fixedly connected to the upper end of the slider, and the clamping assembly includes a contact plate arranged on the side wall of the slider, the contact plate is fixedly connected to the slider, and an elastic rubber pad is fixedly connected to the side of the contact plate away from the slider.

[0011] Preferably, a tooth block is fixedly connected to the side wall of the disc, and the slide groove on the disc is an arc-shaped structure. The tooth blocks are arranged in a circular array about the center point of the disc, and the tooth blocks are meshed with the driving gears. When the driving gear rotates one circle, the disc rotates the distance of one tooth block.

[0012] Preferably, four slide grooves are arranged in a circular array about the center point of the disc, and the slide grooves correspond to the straight grooves, and the top ends of the sliding blocks in the slide grooves extend through the straight grooves.

[0013] Preferably, the clamping assembly includes: a bracket, a fixed plate, a clamping piece, a connecting piece, a push rod and a lower pressure plate, the bracket is fixedly arranged on the upper end of the slider, and the side wall of the bracket is fixedly connected to the fixed plate, and the side of the fixed plate is rotatably connected to the clamping piece, the bottom of the clamping piece away from the fixed plate is rotatably connected to the connecting piece, and the bottom end of the connecting piece is rotatably connected to the push rod, the push rod is slidably connected to the fixed plate, and the bottom end of the push rod is fixedly connected to the lower pressure plate.

[0014] Preferably, the clamping assembly also includes: a guide rod, which is slidably arranged in the fixed plate, and the upper and lower ends of the guide rod both extend through the fixed plate, the bottom end of the fixed plate is fixedly connected to the upper end surface of the lower pressure plate, and the guide rod and the top rod are symmetrically arranged.

[0015] Preferably, the abutment plate is arranged in an arc-shaped structure, and the abutment plate is slidably fitted with the upper end surface of the placement table.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the clamping device for automobile wheel hub ductility testing can limit the position of automobile wheel hubs of different sizes, thereby improving the detection efficiency; at the same time, the wheel hub can be limited from top to bottom, left to right, thereby preventing the wheel hub from shifting during the detection process, thereby improving the accuracy of the detection result. The specific contents are as follows:

[0017] 1. A driving gear, a disc and a tooth block are provided. The driving gear is driven to rotate by a servo motor, so that the driving gear meshes with the tooth block, thereby driving the disc to rotate. Then the slider slides along the slide groove, so that the contact plate and the elastic rubber pad approach the outer side of the wheel hub, thereby clamping the wheel hub, and the elastic rubber pad first fits with the side wall of the wheel hub, and then the elastic rubber pad is squeezed and deformed, thereby fitting with the wheel hub for protection, avoiding scratches on the surface of the wheel hub during inspection, and improving product quality.

[0018] 2. A clamping piece, a connecting piece, a push rod and a lower pressure plate are provided. When the contact plate is in contact with the side wall of the wheel hub, the clamping piece is rotated so that the clamping piece drives the push rod to move downward through the connecting piece, and then the lower pressure plate at the bottom end of the push rod will be in contact with the upper end surface of the wheel hub, thereby fixing the upper end surface of the wheel hub. The structure is simple, the operation is convenient, and the detection efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the top-sectional structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the pressing piece of the utility model.

[0023] In the figure: 1, bottom plate; 101, shielding cover; 2, placing table; 201, straight groove; 3, servo motor; 4, driving gear; 5, disc; 501, gear block; 6, slide groove; 7, slider; 8, contact plate; 9, elastic rubber pad; 10, bracket; 11, fixing plate; 12, clamping member; 13, connecting member; 14, push rod; 15, lower pressure plate; 16, guide rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-Figure 4As shown, the utility model provides a technical solution: a clamping device for automobile wheel hub ductility testing, comprising a base plate 1, a placing table 2 is fixedly connected to the upper end of the base plate 1, and a shielding cover 101 is fixedly connected to the side of the placing table 2, and a servo motor 3 is fixedly connected inside the shielding cover 101.

[0026] This technical solution utilizes the setting of the base plate 1 and the placement table 2. When in use, the base plate 1 is first placed on the upper end of the ductility testing device, and the bolts are passed through the bolt holes on the base plate 1 to splice it with the ductility testing device. At this time, the detection device on the ductility testing device will pass through the through hole in the middle of the base plate 1. Then, the wheel hub to be tested is placed on the placement table 2, and the servo motor 3 is started, so that the servo motor 3 drives the clamping assembly to clamp the wheel hub for testing. After the test is completed, the servo motor 3 is controlled to rotate in the opposite direction, thereby releasing the limit on the wheel hub and removing the wheel hub.

[0027] Embodiment 2: The technical content disclosed in this embodiment is an improvement made on the basis of the above-mentioned embodiment 1. The existing single clamping of the wheel hub side wall, the clamping rigidity is insufficient or the clamping is unstable, which may cause the wheel hub to move or shake during the test, thereby affecting the stability of the test data. The technical solution of this invention is as follows: Figure 1 and Figure 3 As shown, an adjustment assembly of a test device is disclosed, wherein the output end of a servo motor 3 is fixedly connected to a driving gear 4;

[0028] A disc 5 is rotatably connected in the groove opened on the placement table 2, and four straight grooves 201 symmetrically arranged in pairs are opened on the placement table 2 above the disc 5, a slide groove 6 is opened on the disc 5, and a slider 7 is slidably connected in the slide groove 6, a tooth block 501 is fixedly connected to the side wall of the disc 5, and the slide groove 6 on the disc 5 is an arc-shaped structure, the tooth block 501 is arranged in a circular array about the center point of the disc 5, and the tooth block 501 is meshed with the driving gear 4, and when the driving gear 4 rotates one circle, the disc 5 rotates the distance of one tooth block 501, and there are four slide grooves 6 arranged in a circular array about the center point of the disc 5, and the slide groove 6 corresponds to the straight groove 201, and the top of the slider 7 in the slide groove 6 extends through the straight groove 201.

[0029] In this technical solution, Figure 1 As shown, by utilizing the arrangement of the driving gear 4 and the disc 5, the driving gear 4 meshes with the tooth block 501 on the outside of the disc 5 when rotating, thereby driving the disc 5 to rotate, and then by adjusting the position of the slider 7 in the slide groove 6, the slider 7 drives the clamping assembly to move, thereby clamping wheel hubs of different sizes, thereby improving work efficiency.

[0030] Its use is as Figure 3The technical solution shown, first, when testing wheel hubs of different sizes, the servo motor 3 will drive the driving gear 4 to rotate, so that the driving gear 4 engages to drive the tooth block 501 to rotate, thereby driving the disc 5 to rotate, and the disc 5 will drive the slide groove 6 to rotate, so that the slider 7 slides in the slide groove 6, and the slider 7 will move back and forth along the straight groove 201, thereby adjusting the position of the contact plate 8 on the slider 7, so that the contact plate 8 can clamp wheel hubs of different sizes.

[0031] Embodiment 3: The technical content disclosed in this embodiment is a further improvement based on the above-mentioned embodiments 1 and 2. When the side wall of the wheel hub is clamped alone, the clamping rigidity is insufficient or the clamping is unstable, which may cause the wheel hub to move or shake during the test, thereby affecting the stability and reliability of the test data. In order to further solve this technical problem, the technical solution of this invention is as follows: Figure 2 and Figure 4 As shown, a clamping assembly of a test device is disclosed, wherein the upper end of a slider 7 is fixedly connected to the clamping assembly, the clamping assembly includes a contact plate 8 arranged on the side wall of the slider 7, the contact plate 8 is fixedly connected to the slider 7, and the side of the contact plate 8 away from the slider 7 is fixedly connected to an elastic rubber pad 9, the clamping assembly includes: a bracket 10, a fixing plate 11, a clamping member 12, a connecting member 13, a push rod 14 and a lower pressing plate 15, the bracket 10 is fixedly arranged on the upper end of the slider 7, and the side wall of the bracket 10 is fixedly connected to the fixing plate 11, and the side of the fixing plate 11 is rotatably connected to the clamping member 12, and the clamping member 12 is away from the slider The bottom of one end of the fixed plate 11 is rotatably connected to a connecting piece 13, and the bottom end of the connecting piece 13 is rotatably connected to a push rod 14, the push rod 14 is slidably connected to the fixed plate 11, and the bottom end of the push rod 14 is fixedly connected to a lower pressure plate 15, the clamping assembly also includes: a guide rod 16, the guide rod 16 is slidably arranged in the fixed plate 11, and the upper and lower ends of the guide rod 16 both extend through the fixed plate 11, the bottom end of the fixed plate 11 is fixedly connected to the upper end surface of the lower pressure plate 15, and the guide rod 16 and the push rod 14 are symmetrically arranged, the contact plate 8 is an arc-shaped structure, and the contact plate 8 is slidably fitted with the upper end surface of the placement table 2.

[0032] In this technical solution, Figure 2 As shown, by utilizing the settings of the contact plate 8 and the lower pressure plate 15, the contact plate 8 moves together with the slider 7 toward the wheel hub to clamp the side wall of the wheel hub. The contact plate 8 with the arc structure can match the wheel hub, thereby improving the continuous stability and thus improving the accuracy of the detection result. At the same time, the lower pressure plate 15 will fit with the upper surface of the wheel hub, so that the contact plate 8 and the lower pressure plate 15 cooperate with each other to avoid shaking or falling off of the wheel hub during operation, thereby further improving safety.

[0033] Its use is as Figure 4The technical solution shown in the figure is that, first, when the slider 7 moves, it will drive the contact plate 8 to move, so that the contact plate 8 moves close to the side wall of the wheel hub. At this time, the elastic rubber pad 9 will fit with the wheel hub first, and under the extrusion of the contact plate 8, the elastic rubber pad 9 will be deformed, so as to fit tightly with the wheel hub, which can prevent the contact plate 8 from scratching the wheel hub. At the same time, after the elastic rubber pad 9 is deformed, the contact surface with the wheel hub becomes larger, thereby increasing the friction force and making the clamping more stable. When the contact plate 8 fits with the wheel hub, the lower pressure plate 15 will move above the protruding part of the wheel hub, and then the staff will rotate the clamping piece 12, so that the clamping piece 12 drives the connecting piece 13 to rotate, and then the connecting piece 13 will push the push rod 14 to move downward, and the push rod 14 will drive the lower pressure plate 15 to move downward, so that the lower pressure plate 15 is tightly fitted with the upper surface of the protruding part of the wheel hub, and the setting of the guide rod 16 will prevent the lower pressure plate 15 from deviating when pressed down, thereby completing the clamping of the wheel hub.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping device for testing the ductility of an automobile wheel hub, comprising a base plate (1), the upper end of the base plate (1) being fixedly connected to a placement platform (2), and the side of the placement platform (2) being fixedly connected to a shielding cover (101), and a servo motor (3) being fixedly connected inside the shielding cover (101); It is characterized in that Also includes: The output end of the servo motor (3) is fixedly connected with a driving gear (4); A disc (5) is rotatably connected in a groove provided in the placement table (2), and four straight grooves (201) symmetrically arranged in pairs are provided in the placement table (2) above the disc (5), a sliding groove (6) is provided on the disc (5), and a slider (7) is slidably connected in the sliding groove (6), and a clamping assembly is fixedly connected to the upper end of the slider (7), and the clamping assembly includes a contact plate (8) provided on the side wall of the slider (7), the contact plate (8) is fixedly connected to the slider (7), and an elastic rubber pad (9) is fixedly connected to the side of the contact plate (8) away from the slider (7).

2. The clamping device for automobile wheel hub ductility testing according to claim 1, characterized in that: A tooth block (501) is fixedly connected to the side wall of the disk (5), and the slide groove (6) on the disk (5) is arranged in an arc-shaped structure. The tooth blocks (501) are arranged in a circular array about the center point of the disk (5), and the tooth blocks (501) are meshed with the driving gear (4), and when the driving gear (4) rotates one circle, the disk (5) rotates a distance of one tooth block (501).

3. A clamping device for testing the ductility of an automobile wheel hub according to claim 2, characterized in that: Four slide grooves (6) are arranged in a circular array about the center point of the disk (5), and the slide grooves (6) correspond to the straight grooves (201), and the top end of the slider (7) in the slide groove (6) extends through the straight groove (201).

4. The clamping device for automobile wheel hub ductility testing according to claim 1, characterized in that: The clamping assembly comprises: a bracket (10), a fixed plate (11), a clamping member (12), a connecting member (13), a push rod (14) and a lower pressing plate (15); the bracket (10) is fixedly arranged on the upper end of the slider (7); the side wall of the bracket (10) is fixedly connected to the fixed plate (11); the side of the fixed plate (11) is rotatably connected to the clamping member (12); the bottom of one end of the clamping member (12) away from the fixed plate (11) is rotatably connected to the connecting member (13); the bottom end of the connecting member (13) is rotatably connected to the push rod (14); the push rod (14) is slidably connected to the fixed plate (11); and the bottom end of the push rod (14) is fixedly connected to the lower pressing plate (15).

5. The clamping device for automobile wheel hub ductility testing according to claim 4, characterized in that: The clamping assembly also includes: a guide rod (16), the guide rod (16) is slidably arranged in the fixed plate (11), and the upper and lower ends of the guide rod (16) both penetrate and extend out of the fixed plate (11), the bottom end of the fixed plate (11) is fixedly connected to the upper end surface of the lower pressure plate (15), and the guide rod (16) and the push rod (14) are symmetrically arranged.

6. The clamping device for automobile wheel hub ductility testing according to claim 1, characterized in that: The abutment plate (8) is arranged in an arc-shaped structure, and the abutment plate (8) is slidably fitted with the upper end surface of the placement table (2).

Images