RU1787813C - Gearbox - Google Patents

Abstract

Usage: in the field of mechanical engineering and can be used to change the gear ratio between the rotating shafts. The purpose of the invention is to increase reliability and overall performance. The gears of the intermediate shaft are rigidly connected to it, and the limit torque couplings are installed in the gears of the input and output shafts. 4 ill.

Description

The invention relates to mechanical engineering, in particular to gearboxes of machine tools, vehicles.

A gearbox of track machines ALG, AGM is known, which comprises input, output and intermediate shafts with gears connected to them, which are moved relative to each other by a special manual and mechanized drive.

A known gearbox comprising a shaft with gears fixed thereon, an output shaft with freely mounted gears engaged in permanent engagement with the gears of the input shaft and with couplings for coupling the gears of the output shaft with the latter, and also a control system for the couplings made screw, friction with electromagnetic control.

The disadvantage of this design is the increased metal consumption, since p pairs of controlled uft gears are necessary to ensure p-gears, moreover, this gearbox does not provide for automatic protection of gears against overloads and automatic shifting to a lower gear when the torque is higher than the rated one.

The aim of the invention is to increase the reliability and efficiency of the gearbox.

This goal is achieved in that in a gearbox comprising a housing, an input shaft with gears fixed thereon, an output shaft with freely mounted gears engaged in permanent engagement with the gears of the input shaft and with coupling couplings of the gears of the output shaft with the latter, and also a control system for the couplings, the gears of the intermediate shaft are rigidly connected to it, and the coupling gears of the limiting moment are installed on the gears of the input and output shafts, each of which is made in the form of a disk on which is fixed iksiruyuschee ring, spring-loaded and mounted on a shaft movable ring slots associated with the clutch housing and podpruzhinek- but relative thereto, on the ring is fixed a control rod associated with the clutch control system. The control system monitors the position of the torque limiter clutch elements and automatically shifts the HCI gears higher or lower, depending on

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what moment the given transmission transmits. In the event that the torque is equal to the rated torque for a given gear, no switching is performed.

In FIG. 1 shows a general view of the proposed gearbox; in FIG. 2, 3, 4 - section of the loading mechanism of one of the clutch gears.

The gearbox has a leading 1 and driven 2 shafts, an intermediate hall 3 with gears rigidly fixed to it, pinion gear couplings located on the shafts 1, 2. The gearbox contains (p-1) 2 gears, where p - the number of clutch gears of the shaft 2. Thus, for example, shown in FIG. 1 gearbox has 17 gears, 16 gears plus one reverse gear. These gears are formed as follows. By turning on one of the clutch gears of the shaft 1, the clutch gears of the shaft 2 are alternately engaged, so that 4 gears are created for the gearbox. Then the second clutch gear of the shaft 1 is turned on and the clutch gears of the shaft 2, and so on, are alternately turned on. Thus, the gearbox has 4 + 4 + 4 + 4 gears. Forward.

A fixed gear with a shaft 1 gear forms a reverse gear from one of the clutch gears of the shaft 2.

To control the gearbox of the pinion shaft 1 and 2, limit torque couplings are integrated (Fig. 2.3,4). In FIG. 2 shows a section of the loading elements of one of the gear clutch. The drive disc (Figs. 2,3,4) is connected by splines to the shaft. The ring 5 (Fig. 5), mounted on the inclusion disk 6, fixes the disk 6 against axial displacement along the shaft 7. The inclusion ring 8 (Figs. 2,3,4) is connected by splines to the gear clutch case 9 (Fig. 3,4) ) The engagement ring 8 is supported through the springs 10 on the clutch housing 9 (Figs. 2,3,4). A control rod 11 is fixed on the inclusion ring 8. The switching disk 6 is connected by a return coil spring 12 to the shaft 7. Control electromagnets 13 are mounted on the gearbox housing.

When one of the electromagnets 13 is turned off, this gear clutch engages. The ring 5 takes its initial position in the groove of the shaft 7. In this case, the power disk is unable to move to the left. When the housing 9 rotates, it engages through the rolling bodies of the drive disc with the drive ring 13. To control the transmitted moment, the rod 12 is connected to the sensors of the control system. Depending on the size of the transmitted

different axial displacement of the rod 11 relative to the housing 9 due to different deformation of the springs 10 occurs. When the estimated rolling moment is exceeded, the rolling bodies go to the upper horizontal part of the loading tracks (Fig. 2), the control system gives the command to shut off the electromagnet 13 and at the moment the rolling bodies pass lower horizontal part of the loading tracks. At this moment, the ring 5 is loaded from the axial force of the disk 6 and exits the annular groove of the shaft 7, the switch-on disk is shifted to the left by the depth of the depression of the loading track. The clutch is disconnected. The electromagnet 13 holds the engagement disk in this position with the clutch disengaged. To turn on the clutch gear, it is necessary to disconnect the electromagnet 13. The disk 6 is displaced to the right under the action of a spring connected with the shaft 7, the ring 5 occupies the initial position in the annular groove of the shaft 7. The clutch is engaged. To switch from a lower to a higher gear, the control system provides a time delay for disabling the lower gear until the upper gear is fully engaged. To switch to a lower gear, the control system provides a short lag of the pinion gear relative to the driven gear when the electromagnet of the highest disengaged gear is already engaged. This ensures axial destruction of the ring 5 of this gear clutch and its exit from the annular groove.

Claims (1)

SUMMARY OF THE INVENTION A gearbox of a predominantly vehicle means comprising a housing, an input shaft with gears fixed thereto, an output shaft with freely mounted gears engaged in constant engagement with the gears of the input shaft and with coupling couplings of the gears of the output shaft with the latter, and clutch control system, characterized in that, in order to increase reliability and operational efficiency, the gears of the intermediate shaft are rigidly connected to it, and connectors are installed in the gears of the input and output shafts limit torque couplings, each of which is made in the form of a disk on which a fixing ring is mounted, spring-loaded and mounted on the shaft with the possibility of movement, a ring splined with splines to the coupling body and spring-loaded relative to it, a control rod connected to the ring is fixed clutch control system. Fm.1 FIG. 2 Fig.Z 9V 4