SU1650984A1 - Gearbox - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in robotics when creating transport robots. The purpose of the invention is to expand the kinematic capabilities of the gearbox. The gear wheel 8, which is movably axially mounted on the drive shaft 2, is engaged with the pulley 5 of the driven shaft 8. The pulley 5 is cylindrical or tapered, and on its surface equidistant hollows 6 are arranged along concentric circles It tilts the gear 3 when its teeth move from cavities 6 located on one concentric circle to cavities 6 located on another concentric circle, and ensures reliable fixation of the gear o wheels 3 in new position. 2 hp f-ly, 4 ill. (L w

Description

The invention relates to mechanical engineering, in particular to vehicle gearboxes, and can be used in robotics to create robots.

The purpose of the invention is to expand the kinematic capabilities of the gearbox by ensuring the accuracy of gearing during gear shifting.

Figure 1 shows a diagram of a gearbox with a fixed rail; Fig. 2 is a diagram of a gearbox with a swinging rail; in Fig. 3, section A-A in figure 1, figure 4 - section B-B in figure 1. .

The gearbox includes a housing 1, a drive shaft 2 with a gear wheel 3 having a central multifaceted opening 4 of a wedge-shaped cross section and mounted on it with the possibility of axial movement, a driven pulley 5 made cylindrical or tapered, on the surface of which equidistant one from the other of the depression 6 and one annular groove 7, mounted on the driven shaft 8, and a gear mechanism mounted on the driving shaft 2, containing two sleeves 9 of pyramidal shape, two bushings 10 of cylindrical shape, a fork 11, in which they are mounted movably in the axial direction and spring-loaded with damping springs 12 of the bushings 10 with their locking rods fixed 13. The fork 11 with a thrust 14 of the gearshift mechanism can be installed on the rail 15 s recesses 16. The rail 15 is fixed in the housing 1. In a different design, the plug 11 with the shift lever 17 is connected via a slider 18 to a guide 19, mounted for swinging in the housing 1 and a spring-loaded spring 20.

Transmission works as follows.

The torque is transmitted from the drive shaft 2 to the gear wheel 3 from the driven pulley 5 through the tooth-to-hole gear 6 and then to the driven shaft 8. Switching the gear wheel 3 to the adjacent ring of the holes 6 of the driven pulley 5 or any other to change the gear ratio

0 oh 0

0

five

The gear is manufactured using a gear shift mechanism. Pre-squeezing the lock rods 13 with the help of the gi 14 move the fork 11 to the required position. In this case, the gear wheel 3 moves along the drive shaft 2, tilting relative to it and moving its tooth from the cavity 6, located on one of the concentric circles of the driven pulley 5, to the cavity 6, located on the other concentric circle. The gear is tilted by displacing the sleeves 9 and the spring-loaded bushings 10 relative to the fork 11. After the gear 3 is moved to a new position with a different gear ratio, the sleeves 10 in the fork are fixed using stop rods 13, which orient and stabilize the gear position wheels 3 relative to the driven pulley 5. In another design of the gearshift mechanism, gears 3 are moved in a similar way relative to the driven pulley 5 by the lever 17 Disconnections through the slider 18, mounted on the guide 19 with the spring 20, onto the fork 11 of the gearshift mechanism. To engage the neutral gear, the gear 3 is moved into the annular groove 7 of the driven pulley 5, disengaged from the latter. Gear shifting is performed without load using a clutch mechanism. (Not shown).

Formula invented and.

Claims (3)

1. The gearbox, comprising a housing, a drive shaft and a driven shaft with pulleys mounted with the possibility of mutual movement and interconnected toothed connection in the form of teeth and depressions, which are rotational surfaces with the forming involute and located in the radial direction, differing in the fact that, in order to expand the kinematic possibilities, the drive pulley is made in the form of a gear wheel with a central multifaceted opening of a wedge-shaped cross section and mounted on the drive shaft with the possibility of The serrated movement, driven pulley is cylindrical or tapered, on the surface of which equidistant depressions are arranged in concentric circles, and the gearshift mechanism is located on the drive shaft and includes two pyramid-shaped bushings and two cylindrical-shaped bushings and spring-loaded cylindrical sleeve with locking locking rods. 2. The gearbox according to claim 1, wherein the gearshift mechanism includes a rail for axially displaceable placement along it and a fixed fork. 3. The gearbox according to claim 1, wherein the gear change mechanism includes a gear shift lever connected to the fork via a slider. FIG. 2 10 O V ft Aa Fi.Z bv 1