Locking device for wheel dynamic balancing machine

Abstract

The utility model discloses a locking device for a wheel dynamic balancing machine, and relates to the technical field of wheel dynamic balancing machines. In order to solve the problem that a locking device in an existing wheel dynamic balancing machine adopts a spring and a pushing device to realize automatic locking of a wheel, but the structure can generate axial impact on a transmission assembly of the wheel dynamic balancing machine in the locking process, so that the stability of the wheel dynamic balancing machine is influenced. The output end face of the air cylinder is fixedly connected with one end of the mounting sleeve, the small-diameter end of the fixing base is inserted into the other end of the mounting sleeve, a bearing is arranged between the circumferential outer surface of the small-diameter end of the fixing base and the inner wall of the other end of the mounting sleeve, and a pressing plate and a telescopic rod are sequentially arranged in the mounting sleeve from left to right. One end of the telescopic rod is in threaded connection with a threaded hole in the center of the end face of the pressing plate, the other end of the telescopic rod penetrates through a center hole in the fixing base, a compressed spring is arranged between the end face of the pressing plate and the small-diameter end face of the fixing base, and the telescopic rod 4 is sleeved with the compressed spring. The utility model is suitable for the wheel dynamic balancing machine.

Description

Technical Field

[0001] This utility model relates to the field of wheel dynamic balancing machine technology, and specifically to a locking device for a wheel dynamic balancing machine. Background Technology

[0002] Currently, most wheel dynamic balancing machines use manual locking with a split nut when installing wheels. This is inefficient and inconvenient. Some high-end wheel dynamic balancing machines use automatic locking, such as the pneumatic locking device disclosed in invention patent CN119197887A, but this requires a special cylinder, has a complex structure, and is difficult to repair after damage. For example, the invention patent with publication number CN119309734A also discloses a pneumatic locking mechanism. A spring is added inside the bushing of the transmission component of the wheel balancing machine. This spring and a pushing device (cylinder or motor) are used to achieve automatic locking of the wheel. However, this structure will generate an axial impact on the transmission component of the wheel balancing machine during the locking process. Current wheel dynamic balancing machines are all external cantilever beam hard support balancing machines. A piezoelectric sensor is installed between the transmission component and the housing. The wheel balancing machine calculates the dynamic imbalance of the tested wheel through the output signal of the piezoelectric sensor. If the transmission component is frequently subjected to an axial impact, it may cause a small axial displacement of the transmission component, which will affect the signal of the piezoelectric sensor, thereby affecting the stability of the wheel dynamic balancing machine.

[0003] In summary, existing wheel dynamic balancing machines use springs and push devices to achieve automatic wheel locking. However, this structure generates an axial impact on the transmission components of the wheel balancing machine during the locking process, thus affecting the stability of the wheel dynamic balancing machine. Utility Model Content

[0004] This invention addresses the problem that existing wheel dynamic balancing machines use springs and push devices to automatically lock the wheels, but this structure generates an axial impact on the transmission components of the wheel balancing machine during the locking process, thus affecting the stability of the wheel dynamic balancing machine. Therefore, this invention proposes a locking device for wheel dynamic balancing machines.

[0005] The present invention relates to a locking device for a wheel dynamic balancing machine, which comprises a mounting sleeve 2, a cylinder 3, a telescopic rod 4, a fixed seat 5, a bearing 6, a compression spring 7, and a pressure plate 8.

[0006] The output end face of cylinder 3 is fixedly connected to one end of mounting sleeve 2. The cross-section of the fixed seat 5 is T-shaped. The small diameter end of the fixed seat 5 is inserted into the other end of the mounting sleeve 2. A bearing 6 is provided between the outer circumferential surface of the small diameter end of the fixed seat 5 and the inner wall of the other end of the mounting sleeve 2. The inside of the mounting sleeve 2 is provided with a pressure plate 8 and a telescopic rod 4 from left to right. One end of the telescopic rod 4 is threadedly connected to the threaded hole at the center of the end face of the pressure plate 8. The other end of the telescopic rod 4 passes through the center hole 5-2 on the fixed seat 5. A compression spring 7 is provided between the end face of the pressure plate 8 and the small diameter end face of the fixed seat 5. The compression spring 7 is sleeved on the telescopic rod 4.

[0007] Furthermore, a boss 5-1 is machined at the center of the large-diameter end face of the fixed base 5;

[0008] Furthermore, a gap is provided between the end face of the cylinder extension rod 3-1 of the cylinder 3 and the end face of the pressure plate 8;

[0009] Furthermore, the mounting sleeve 2, cylinder 3, telescopic rod 4, fixed seat 5, bearing 6, compression spring 7 and pressure plate 8 are coaxially arranged;

[0010] Furthermore, a mounting boss is machined at the center of the small-diameter end face of the fixed seat 5, and the end of the compression spring 7 is sleeved on the mounting boss of the small-diameter end face of the fixed seat 5.

[0011] Furthermore, the fixed seat 5 is fixedly connected to the end face of the pulley 1-1 in the wheel balancing machine transmission assembly 1 by bolts;

[0012] Furthermore, the other end of the telescopic rod 4 is connected to the end of the locking rod 1-2 in the wheel balancing machine transmission assembly 1;

[0013] Furthermore, the bearing 6 is an angular contact bearing;

[0014] Furthermore, during use, by retracting and extending the cylinder telescopic rod 3-1 of cylinder 3, the locking rod 1-2 on the wheel balancing machine transmission assembly 1 can be tightened and extended, thereby achieving wheel locking and unlocking. When the cylinder telescopic rod 3-1 retracts, the telescopic rod 4 retracts into the mounting sleeve 2 under the action of the compression spring 7, and the locking rod 1-2 is pulled out, which can lock the wheel for wheel dynamic balancing measurement. During measurement, the pulley 1-1 and the locking rod 1-2 are rotating. At this time, the cylinder telescopic rod 3-1 is separated from the pressure plate 8, which does not affect the rotation of the locking rod 1-2. Moreover, the cylinder 3 is connected to the outer ring of the bearing 6 through the mounting sleeve. When the pulley 1-1 rotates, it drives the fixed seat 5 to rotate on the inner ring of the bearing 6, but does not drive the cylinder 3 to rotate. After the wheel dynamic balancing is completed, rotation stops, the control cylinder extension rod 3-1 extends, pushing the pressure plate 8 to compress the compression spring 7, causing the extension rod 4 to extend out of the mounting sleeve 2. The locking rod 1-2 in the wheel balancing machine transmission assembly 1 is pushed back, releasing the wheel. The bearing 6 is an angular contact bearing, which can withstand the axial force when the compression spring 7 is compressed. The entire device is integrated with the wheel balancing machine transmission assembly 1, so the locking device will not be subjected to external axial force impact during operation.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention overcomes the shortcomings of existing technologies. When the cylinder telescopic rod retracts, it is pulled back into the mounting sleeve by the pressure spring, and the locking rod is extended, locking the wheel. At this time, the cylinder telescopic rod is separated from the pressure plate, not affecting the rotation of the drive shaft. The cylinder is connected to the outer ring of the bearing through the mounting sleeve. When the drive shaft and pulley in the wheel balancing machine's transmission assembly rotate, they drive the fixed seat to rotate on the inner ring of the bearing, without rotating the cylinder. When the cylinder telescopic rod extends, it pushes the pressure plate to compress the pressure spring, causing the telescopic rod to extend out of the mounting sleeve. The locking rod is pushed back, releasing the wheel. The entire device is bolted to the pulley in the wheel balancing machine's transmission assembly, forming an integral part of the transmission assembly. This prevents the locking device from being impacted by external axial forces during operation, thus ensuring the stability of the wheel dynamic balancing machine. Attached Figure Description

[0017] Figure 1 This is a front view of the locking device for a wheel dynamic balancing machine described in this utility model in the installed state;

[0018] Figure 2 This is a front sectional view of a locking device for a wheel dynamic balancing machine according to the present invention. Detailed Implementation

[0019] Specific implementation method one: Combining Figure 1 and Figure 2This embodiment describes a locking device for a wheel dynamic balancing machine, which comprises a mounting sleeve 2, a cylinder 3, a telescopic rod 4, a fixed base 5, a bearing 6, a compression spring 7, and a pressure plate 8.

[0020] The output end face of cylinder 3 is fixedly connected to one end of mounting sleeve 2. The cross-section of the fixed seat 5 is T-shaped. The small diameter end of the fixed seat 5 is inserted into the other end of the mounting sleeve 2. A bearing 6 is provided between the outer circumferential surface of the small diameter end of the fixed seat 5 and the inner wall of the other end of the mounting sleeve 2. The inside of the mounting sleeve 2 is provided with a pressure plate 8 and a telescopic rod 4 from left to right. One end of the telescopic rod 4 is threadedly connected to the threaded hole at the center of the end face of the pressure plate 8. The other end of the telescopic rod 4 passes through the center hole 5-2 on the fixed seat 5. A compression spring 7 is provided between the end face of the pressure plate 8 and the small diameter end face of the fixed seat 5. The compression spring 7 is sleeved on the telescopic rod 4.

[0021] In this specific embodiment, during use, the retraction and extension of the cylinder telescopic rod 3-1 of the cylinder 3 can tighten and extend the locking rod 1-2 on the wheel balancing machine transmission assembly 1, thereby achieving wheel locking and unlocking. When the cylinder telescopic rod 3-1 retracts, the telescopic rod 4 retracts into the mounting sleeve 2 under the action of the compression spring 7, and the locking rod 1-2 is pulled out, which can lock the wheel for wheel dynamic balancing measurement. During the measurement, the pulley 1-1 and the locking rod 1-2 are rotating. At this time, the cylinder telescopic rod 3-1 is separated from the pressure plate 8, which does not affect the rotation of the locking rod 1-2. Moreover, the cylinder 3 is connected to the outer ring of the bearing 6 through the mounting sleeve. When the pulley 1-1 rotates, it drives the fixed seat 5 to rotate on the inner ring of the bearing 6, but does not drive the cylinder 3 to rotate. After the wheel dynamic balancing is completed, rotation stops, the control cylinder extension rod 3-1 extends, pushing the pressure plate 8 to compress the compression spring 7, causing the extension rod 4 to extend out of the mounting sleeve 2. The locking rod 1-2 in the wheel balancing machine transmission assembly 1 is pushed back, releasing the wheel. The bearing 6 is an angular contact bearing, which can withstand the axial force when the compression spring 7 is compressed. The entire device is integrated with the wheel balancing machine transmission assembly 1, so the locking device will not be subjected to external axial force impact during operation.

[0022] Specific Implementation Method Two: Combining Figure 1 and Figure 2 This embodiment further defines the locking device described in Specific Embodiment 1. In this embodiment, a locking device for a wheel dynamic balancing machine has a boss 5-1 machined at the center of the large-diameter end face of the fixed seat 5.

[0023] Specific implementation method three: Combining Figure 1 and Figure 2This embodiment further defines the locking device described in Specific Embodiment 1. In this embodiment, a locking device for a wheel dynamic balancing machine is provided, wherein a gap is provided between the end face of the cylinder extension rod 3-1 of the cylinder 3 and the end face of the pressure plate 8.

[0024] Specific implementation method four: Combination Figure 1 and Figure 2 This embodiment further defines the locking device described in Specific Embodiment 1. In this embodiment, the locking device for a wheel dynamic balancing machine is coaxially arranged with the mounting sleeve 2, cylinder 3, telescopic rod 4, fixed seat 5, bearing 6, compression spring 7, and pressure plate 8.

[0025] Specific Implementation Method Five: Combining Figure 1 and Figure 2 This embodiment further defines the locking device described in Specific Embodiment 4. In this embodiment, a locking device for a wheel dynamic balancing machine is provided, wherein a mounting boss is machined at the center of the small-diameter end face of the fixed seat 5, and the end of the compression spring 7 is sleeved on the mounting boss of the small-diameter end face of the fixed seat 5.

[0026] In this specific embodiment, a mounting boss is machined at the center of the small-diameter end face of the fixed seat 5, and the end of the compression spring 7 is sleeved on the mounting boss of the small-diameter end face of the fixed seat 5 to achieve coaxial positioning of the compression spring 7 and the fixed seat 5.

[0027] Specific Implementation Method Six: Combination Figure 1 and Figure 2 This embodiment further defines the locking device described in Specific Embodiment 5. In this embodiment, the fixed base 5 is fixedly connected to the end face of the pulley 1-1 in the transmission assembly 1 of the wheel balancing machine by bolts.

[0028] Specific implementation method seven: Combination Figure 1 and Figure 2 This embodiment further defines the locking device described in Specific Embodiment Six. In this embodiment, the other end of the telescopic rod 4 is connected to the end of the locking rod 1-2 in the wheel balancing machine transmission assembly 1.

[0029] Specific implementation method eight: Combination Figure 1 and Figure 2 This embodiment further defines the locking device described in Specific Embodiment 4. In this embodiment, the locking device for a wheel dynamic balancing machine uses an angular contact bearing as the bearing 6.

[0030] Working principle

[0031] In use, by retracting and extending the cylinder extension rod 3-1 of cylinder 3, the locking rod 1-2 on the wheel balancing machine transmission assembly 1 can be tightened and extended, thereby locking and loosening the wheel. When the cylinder extension rod 3-1 retracts, the extension rod 4 retracts into the mounting sleeve 2 under the action of the compression spring 7, and the locking rod 1-2 is pulled out, which can lock the wheel for dynamic balancing measurement. During the measurement, the pulley 1-1 and the locking rod 1-2 are rotating. At this time, the cylinder extension rod 3-1 is separated from the pressure plate 8, which does not affect the rotation of the locking rod 1-2. Moreover, the cylinder 3 is connected to the outer ring of the bearing 6 through the mounting sleeve. When the pulley 1-1 rotates, it drives the fixed seat 5 to rotate on the inner ring of the bearing 6, but does not drive the cylinder 3 to rotate. After the wheel dynamic balancing is completed, rotation stops, the control cylinder extension rod 3-1 extends, pushing the pressure plate 8 to compress the compression spring 7, causing the extension rod 4 to extend out of the mounting sleeve 2. The locking rod 1-2 in the wheel balancing machine transmission assembly 1 is pushed back, releasing the wheel. The bearing 6 is an angular contact bearing, which can withstand the axial force when the compression spring 7 is compressed. The entire device is integrated with the wheel balancing machine transmission assembly 1, so the locking device will not be subjected to external axial force impact during operation.

Claims

1. A locking device for a wheel dynamic balancing machine, characterized by: It includes a mounting sleeve (2), a cylinder (3), a telescopic rod (4), a fixing seat (5), a bearing (6), a compression spring (7), and a pressure plate (8); The output end face of the cylinder (3) is fixedly connected to one end of the mounting sleeve (2). The cross-section of the fixed seat (5) is T-shaped. The small diameter end of the fixed seat (5) is inserted into the other end of the mounting sleeve (2). A bearing (6) is provided between the outer circumferential surface of the small diameter end of the fixed seat (5) and the inner wall of the other end of the mounting sleeve (2). The inside of the mounting sleeve (2) is provided with a pressure plate (8) and a telescopic rod (4) from left to right. One end of the telescopic rod (4) is threadedly connected to the threaded hole at the center of the end face of the pressure plate (8). The other end of the telescopic rod (4) passes through the center hole (5-2) on the fixed seat (5). A compression spring (7) is provided between the end face of the pressure plate (8) and the small diameter end face of the fixed seat (5). (7) Sleeve on telescopic rod (4); there is a gap between the end face of the cylinder telescopic rod (3-1) of the cylinder (3) and the end face of the pressure plate (8); the mounting sleeve (2), cylinder (3), telescopic rod (4), fixed seat (5), bearing (6), compression spring (7) and pressure plate (8) are coaxially arranged; a mounting boss is machined at the center of the small diameter end face of the fixed seat (5), and the end of the compression spring (7) is sleeved on the mounting boss of the small diameter end face of the fixed seat (5); the fixed seat (5) is fixedly connected to the end face of the pulley (1-1) in the wheel balancer transmission assembly (1) by bolts; the other end of the telescopic rod (4) is connected to the end of the locking rod (1-2) in the wheel balancer transmission assembly (1).

2. The locking device for a wheel dynamic balancing machine according to claim 1, characterized in that: The fixed seat (5) has a boss (5-1) machined at the center of the large diameter end face.

3. The locking device for a wheel dynamic balancing machine according to claim 1, characterized in that: The bearing (6) mentioned above is an angular contact bearing.

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