A device for measuring the wear of a drive gear toothed disc

Abstract

The present invention proposes a drive wheel sprocket wear measurement device, comprising a toothed frame, a differential head and a frame fastening assembly. The differential head is fixed to the toothed frame by a locking nut; the positioning arc of the toothed frame matches the size of the arc surface on the measured sprocket, and the central reinforcement rib is located at the center of the toothed frame, connecting the top of the toothed frame with the positioning arc; the differential head mounting hole on the toothed frame for fixing the differential head is located on the pitch circle of the measured tooth shape, and the axis of the differential head mounting hole is determined by the differential head mounting hole positioning point, and the position of the differential head mounting hole positioning point is determined by the pitch circle of the measured sprocket; the frame fastening assembly is used to fix the toothed frame to the measured sprocket. The measuring device of the present invention can read the measurement value of the measured sprocket by adjusting the differential head, can eliminate the influence of the subjective consciousness of the measurer, and improve the measurement accuracy by 50 times to 0.01mm.

Description

Technical Field

[0001] The invention belongs to the technical field of tracked vehicles, and in particular relates to a drive wheel sprocket wear measurement device suitable for tracked vehicles. Background Art

[0002] The driving wheel is generally composed of a gear plate, a wheel hub and other components. The function of the driving wheel is to convert the driving torque transmitted from the engine to the driving wheel through the transmission device into the pulling force of the track in the driving condition; in the braking condition, the braking torque transmitted by the brake is converted into the track braking.

[0003] As a part that is in direct contact with the track, the sprocket is prone to wear. The commonly used method to measure whether the drive wheel sprocket has reached its service life is to measure whether the wear on one side of the sprocket exceeds a certain value. If it exceeds a certain value, the sprocket is judged to be unusable. The commonly used measurement method at present is: using a toothed template with a feeler gauge for measurement. This measurement method has low accuracy and involves both subjective and objective factors. The subjective factor is that the toothed template is fixed by hand, and the alignment is checked by the naked eye. The positioning accuracy is poor, only 0.5mm; the objective factor is that the sprocket wear measurement position is at the pitch circle of the sprocket, which is arc-shaped, and the feeler gauge is wide. When using the feeler gauge for measurement, single-point or single-line contact cannot be formed, and the measurement data itself has a large error. Therefore, it is impossible to accurately measure the wear of the sprocket. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention proposes a drive wheel sprocket wear measuring device to solve the technical problem of how to accurately measure the drive wheel sprocket wear, eliminate the influence of subjective and objective factors on the measurement accuracy, and provide more accurate data for the state judgment of the drive wheel sprocket.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention proposes a driving wheel sprocket wear measuring device, which includes a toothed frame, a differential head and a frame fastening assembly; wherein the differential head is fixed to the toothed frame by a locking nut; the positioning arc of the toothed frame is consistent with the size of the arc surface on the measured sprocket, and the central reinforcement rib is located at the center of the toothed frame, connecting the top of the toothed frame with the positioning arc; the differential head mounting hole on the toothed frame for fixing the differential head is located on the pitch circle of the measured tooth shape, the axis of the differential head mounting hole is determined by the differential head mounting hole positioning point, and the position of the differential head mounting hole positioning point is determined by the pitch circle of the measured sprocket; the frame fastening assembly is used to fix the toothed frame to the measured sprocket.

[0008] Furthermore, the measuring device comprises two differential heads which are symmetrically mounted on the toothed frame.

[0009] Furthermore, the frame fastening assembly adopts an adjustable position tightening handle bolt.

[0010] (III) Beneficial effects

[0011] The present invention proposes a drive wheel sprocket wear measurement device, comprising a toothed frame, a differential head and a frame fastening assembly. The differential head is fixed to the toothed frame by a locking nut; the positioning arc of the toothed frame matches the size of the arc surface on the measured sprocket, and the central reinforcement rib is located at the center of the toothed frame, connecting the top of the toothed frame with the positioning arc; the differential head mounting hole on the toothed frame for fixing the differential head is located on the pitch circle of the measured tooth shape, and the axis of the differential head mounting hole is determined by the differential head mounting hole positioning point, and the position of the differential head mounting hole positioning point is determined by the pitch circle of the measured sprocket; the frame fastening assembly is used to fix the toothed frame to the measured sprocket. The measuring device of the present invention can read the measurement value of the measured sprocket by adjusting the differential head, can eliminate the influence of the subjective consciousness of the measurer, and improve the measurement accuracy by 50 times to 0.01mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a device for measuring the wear of a drive gear sprocket according to an embodiment of the present invention;

[0013] Figure 2 Schematic diagram of the toothed frame structure in an embodiment of the present invention: (a) front view, (b) AA rotation view, (c) CC view;

[0014] Figure 3 Schematic diagram of the toothed disc wear measurement principle in an embodiment of the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0016] This embodiment provides a drive wheel gear wear measurement device, the structure of which is as follows: Figure 1 The measuring device 101 is mainly composed of a toothed frame 111, a differential head 112, a locking nut 113 and an adjustable position fixing handle bolt 114. Figure 2 and 3As shown, the differential head 112 is fixed to the toothed frame 111 by a locking nut 113, and the two differential heads 112 are symmetrically installed to achieve one-time clamping and measure the two end faces of a tooth shape. The toothed frame 111 is designed according to the tooth shape and structure of the measured toothed disc 131. Among them, the positioning arc 125 is consistent with the size of the arc surface on the measured toothed disc 131, which is convenient for the measuring device to perform auxiliary positioning. The central reinforcement rib 124 is located at the center of the toothed frame 111, connecting the top of the toothed frame 111 and the positioning arc 125 to prevent the toothed frame 111 from being deformed when the adjustable tightening handle bolt 114 is tightened and fixed.

[0017] The differential head mounting hole 123 on the toothed frame 111 for fixing the differential head 112 is located on the pitch circle of the toothed profile to be measured, and the axis of the differential head mounting hole 123 is determined by the differential head mounting hole positioning point 121, and the position of the differential head mounting hole positioning point 121 is determined by the pitch circle of the measured toothed disc, so as to ensure that the position measured by the differential head 112 is the pitch circle position of the measured toothed disc 131. When using the measuring device to measure the value of each tooth of the toothed disc at the pitch circle, the lower fitting surface 122 of the toothed frame 111 is fitted with the measured toothed disc 131, and the positioning arc 125 is fitted with the tooth surface arc. The toothed frame 111 and the measured toothed disc 131 are fixed by an adjustable tightening handle bolt 114.

[0018] The measuring device of the present invention can be fastened by only using the adjustable position tightening handle bolt 114, without using other installation tools. By adjusting the differential head 112, the measured value of the toothed disc 131 to be measured can be read.

[0019] After the sprocket is assembled for the first time, the device is used to measure the measured values ​​of each tooth of the sprocket at the pitch circle as the initial data of the sprocket. In the subsequent use of the sprocket, the device is used to continuously measure the values ​​of the sprocket at the pitch circle. The difference between the subsequent measured values ​​and the initial data is the wear amount of the drive wheel sprocket. This measuring device improves the measurement accuracy to 0.01mm.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A drive wheel sprocket wear measurement device, characterized in that: The measuring device includes a toothed frame, a differential head and a frame fastening assembly; wherein, the measuring device includes two differential heads, which are symmetrically mounted on the toothed frame, and the differential heads are fixed to the toothed frame by locking nuts; the positioning arc of the toothed frame matches the size of the arc surface on the measured toothed disc, and the central reinforcement rib is located at the center of the toothed frame, connecting the top of the toothed frame with the positioning arc; the differential head mounting hole on the toothed frame for fixing the differential head is located on the pitch circle of the measured tooth shape, the axis of the differential head mounting hole is determined by the positioning point of the differential head mounting hole, and the position of the positioning point of the differential head mounting hole is determined by the pitch circle of the measured toothed disc; the frame fastening assembly is used to fix the toothed frame to the measured toothed disc, and the frame fastening assembly adopts an adjustable tightening handle bolt.

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