Mechanical transmission

 

(57) Abstract:

The invention relates to mechanical engineering and can be used in all areas of the economy as a drive for transmitting rotational motion with a significant reduction in the number of revolutions at any torque. The aim of the invention is to increase reliability. This is achieved by the fact that each of kinematic pairs provided with a splined sleeve that is installed on the driven shaft can be rotated with respect to it and is rigidly connected with the lever, a second toothed coupling is made with slots and mounted on the spline sleeve can move along it, and the node kinematic timing circuit of the coupling is made in the form of a compression spring installed between the lever and the end of the second toothed coupling. Transmitting the kinematic pairs are shifted in phase relative to each other by an angle equal to 360/n, where n is the number of transmission kinematic pairs. The profile of each Cam is made with four work areas which correspond to the four stages of operation of the transmission kinematic pairs: idle, smooth clutch lever with the Cam, stroke, disengagement of the Cam and lever. 2 C.p. f-crystals, 1 Il.

Known worm gear containing two perpendicular axis located. On one of the axes of the fixed gear, and the second screw-thread cut in the form of incoming engages with the worm wheel. The gear ratio of such transfer 8-80.

Known gear train containing two parallel axis fixed on them gears, razlichayuscimisya diameter and number of teeth (Krainev, A. F. Dictionary-reference mechanisms. M.: Mashinostroenie, S. 275, 518).

As a prototype of the selected mechanical transmission that contains the driving and driven shafts and shifted relative to each other in phase by at least two transmitting kinematic pairs, each of which is made in the form of a Cam mounted on the control shaft, and located on the driven shaft can be rotated relative to the lever, kinematically closed with the Cam, the two toothed coupling with teeth on the end, one of which is rigidly mounted on the driven shaft, and a host of kinematic closure timing of the coupling [1].

The disadvantage of this transmission is the axial displacement of the arm relative to the drive shaft, which reduces reliability.

The aim of the invention is the slotted sleeve, installed on the driven shaft can be rotated with respect to it and is rigidly connected with the lever, a second toothed coupling is made with slots and mounted on the spline sleeve can move along it, and the node kinematic timing circuit of the coupling is made in the form of a compression spring installed between the lever and the end of the second toothed coupling. Transmitting the kinematic pairs are shifted in phase relative to each other by an angle equal to 360about/n, where n is the number of transmission kinematic pairs.

The profile of each Cam is made with four work areas which correspond to the four stages of operation of the transmission kinematic pairs: idle, smooth clutch lever and Cam stroke, the disengagement of the Cam and lever.

In the drawing is given of the proposed transfer.

The transfer works as follows. The input shaft 1 with a fixed Cams 3, turning, working parties Cams, constantly in contact with the rollers 6, in turn rotates the rocker arms 5 for half of the turnover on the angle corresponding to the arc dimension of half of one tooth of the toothed coupling halves.

Gear coupling 7 make Rabochaya when the output shaft 2 on a half-tooth gear coupling 4, and the input shaft 1 with Cams 3 when it is rotated 180about. Passed beyond the dead point, corresponds to the maximum deviation of the tilting lever 5, the roller 6 starts to move down the branches of the profile of the Cam 3, the lever 5 starts to swing in the opposite direction, freeing his teeth coupling out of engagement and making idle.

The departure of the tilting lever 5 to its original position provides a buffer spring 9. When one of the levers 5 under the influence of its buffer spring begins to move in the opposite direction and moves to the original position, then its toothed coupling half 9 opposite sides of the teeth slide on opposite sides of the teeth of the coupling 4 and compresses its tension spring 8 until then, until the teeth of the coupling hub 7 don't you stop by the teeth of the coupling 4 in the new position of the beginning of its stroke. At this time, the shaft 1 rotates through 360aboutand another lever 5 will start working stroke.

1. MECHANICAL TRANSMISSION that contains the driving and driven shafts and shifted one with respect to another phase not less than two transmit kinematic pairs, each of which is made in the form of a Cam mounted on the control shaft, and installed on the driven shaft with the possibility of p. one of which is rigidly mounted on the driven shaft, and node kinematic circuit gear coupling, characterized in that, to increase reliability, each of kinematic pairs provided with a splined sleeve that is installed on the driven shaft can be rotated with respect to it and is rigidly connected with the lever, a second toothed coupling is made with slots and mounted on the spline sleeve can move along it, and the node kinematic timing circuit of the coupling is made in the form of a compression spring installed between the lever and the end of the second toothed coupling.

2. Transfer under item 1, characterized in that the transmission kinematic pairs are shifted in phase one with respect to another by an angle equal to 360o/n, where n is the number of transmission kinematic pairs.

3. Transfer via PM.1 and 2, characterized in that the profile of each Cam is made with four work areas which correspond to the four stages of operation of the transmission kinematic pairs: idle, smooth clutch Cam and lever stroke, the disengagement of the Cam and lever.

 

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