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Driving device

A technology of transmission device and transmission gear, applied in the direction of hoisting device, portable lifting device, belt/chain/gear, etc., can solve the problems of not easy to process splines, difficult to process, etc.

Inactive Publication Date: 2012-01-04
DG HUST MFG ENG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some special projects, due to the limitation of space structure and other factors, the drive shaft journal is only 15mm or 10mm, and it is not easy to process self-centering splines and keyway inserts on such journals

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0024] A transmission device such as figure 1 As shown, the drill rod 100 and the transmission gear 200 are included. The drill rod 100 cooperates with the transmission gear 200 to transmit the power of the drill rod 100. The drill rod 100 includes a drill rod main body 101 and a connecting end 102, and the connecting end 102 is used to cooperate with the transmission gear 200. The cross section of the connecting end 102 of the drill rod 100 perpendicular to the axis of the drill rod 100 is a circular arc quadrilateral, such as figure 2 , image 3 Shown. Such as Figure 4 , Figure 5 As shown, the transmission gear 200 is provided with a special-shaped hole 202 that is matched with the connecting end 102 of the drill rod 100, and the cross-section of the special-shaped hole 202 perpendicular to the axis of the transmission gear 200 is also a circular arc quadrilateral. The connecting end 102 of the drill rod 100 is assembled in the special-shaped hole 202 of the transmission...

Embodiment 2

[0031] A transmission device whose structure is the same as that of the first embodiment. The difference is that the radius of the four-segment arcs 300, 400, 500 and 600 of the arc quadrilateral is set to 24mm to meet the requirements when the shaft journal is only 15mm or 10mm occasion. Practice has proved that the transmission device can effectively transmit the power of the drill rod 100 when the journal is only 15mm and 10mm, and can also effectively center the transmission gear 200 and the drill rod 100 and ensure that the drill rod 100 is in the transmission gear 200. For axial sliding. The transmission device has low noise and convenient processing.

[0032] It should be noted that the radius of the four arcs 300, 400, 500, and 600 of the arc quadrilateral is not limited to 24 mm, and the radius can be flexibly set according to the size of the journal in the specific use environment.

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Abstract

The invention discloses a driving device comprising a drill rod and a driving gear which are matched with each other, wherein the drill rod is provided with a connecting end for matching with the driving gear provided with a special-shaped hole for matching with the connecting end of the drill rod, the section of the connecting end and the section of the special-shaped hole are in a circular-arc quadrilateral shape, the section of the connecting end, which is perpendicular to the axis of the drill rod, and the section of the special-shaped hole, which is perpendicular to the axis of the driving gear are in circular-arc quadrangle, wherein the circular-arc quadrangle comprises four same circular arcs in uniform distribution, and the adjacent two circular arcs in the four circular arcs are in round connection. The driving device is suitable for smaller shaft neck environment, can ensure that the drill rod axially slides in a gear sleeve of the driving gear and also effectively deliver the dynamic force of the drill rod, and the gear and the drill rod can be effectively centered.

Description

Technical field [0001] The present invention relates to the technical field of mechanical transmission, in particular to a transmission device. Background technique [0002] In the mechanical transmission structure, it can not only transmit power but also ensure the axial movement of the moving parts. Commonly used are spline pairs and axial single key structures. For the occasions where the journal is relatively large and the transmission power is large, the spline pair structure is usually used; for the occasions where the journal is small and the transmission power is not large, the structure of opening a single keyway on the shaft and inserting a guide flat key is more common. Although these two structures can meet common transmission needs, they are not suitable for all occasions. In some special projects, due to the limitation of space structure and other factors, the drive shaft journal is only 15mm or only 10mm. It is not easy to machine self-centering splines on such j...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17E21B17/00
Inventor 李斌黄禹郑振华李海洲龚时华毛军朱润平
Owner DG HUST MFG ENG RES INST
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