SU716884A1 - Vehicle hydromechanical transmission - Google Patents

Description

FIELD OF THE INVENTION The invention relates to transport engineering, in particular to automobile transmissions and tons of caches. The closest to the invention of the known technical solutions is the hydromechanical transmission of the transport means, comprising a housing that houses the main gearbox, the output shaft which is located parallel to the input shaft, and the drive unit of the hydromechanical transmission gears the hydraulic unit of the torus, the driven gear connected with the front wheel gear, the intermediate gear meshed with the said, driving and driven gears, and from the drive gear drive Rear pump mounted on the output shaft of the gearbox 1. The disadvantages of such a hydromechanical transmission are the non-compact arrangement and the high suction height of the pumps, which creates an increase in power loss for their drive, complicates the armature of the pumps, especially in connection with the more complex connection of the rear pump to the hydraulic system, and increases the dimensions of the hydromechanical transmission. The purpose of the invention is to increase the compactness and increase power loss by reducing the suction height of the pumps. This goal is achieved due to the fact that the knowledge of the gear of the pump drive unit is kinematically connected with the gear of the front axle pump and of the hydraulic systems and installed by means of bearings on the front end of the output shaft of the gearbox on which the drive gear of the rear pump is located, Pumps are mounted on the bottom of the transmission housing. And also by the fact that the kinematic connection is made in the form of an additional gear ring placed on the driven gear of the block

pump drive in air flow, gearbox with front wheel gear. and i-pumps of hydraapich systems of trash means of a tailor.

Such a device of the pump drive unit allows the pumps to be installed on the bottom of the trans mission} to significantly reduce the height of their suction, thereby increasing the reliability of the hydraulic circuits.

FIG. 1 depicts a Kinemati EU: hydromechanical transmission scheme with a drive unit for hydraulic pumps of the vehicle systems in FIG. 2 - the output shaft of the gearbox with the drive gear of the pump drive unit h installed on the lower section gears; with the rigid drive gear updated with the rear pump.

Gidravlicheskl transshyusi soder- INH pump drive unit chgeskih hydraulic systems of the vehicle, they tashy pinion 1 c & aaaHHjio a pump: 2 hid.rotransformatoral intermediate wheel gear 3 ustanovlennu1o freely on a fixed axle 4, the driven gear 5 th with vtopnet to at tively notched spring 6 and ustedleinugo at the weekend; (hall 7 on the underside of the tire workers 8. With the additional gear: crown 6 of the driven gear 5 the gear 9 of the drive of the pump & 10 pump 10 and the gear 11 of the pump pump sa 12 hydraulic booster control are included. Besides the pumps from the history 6 another tipping pump is activated: its car mechanism —CciMo stall.

At the front end of the output shaft 7 of the gearbox are rigidly mounted. V1E driving gear 13 of the rear-wheel drive the gearbox engages the 14th gear on the back, dew 15 of the hydromechanical trg1nsmns;

The pumps are driven in a gd way.

Pumping gear 2 gearboxes of the vehicle and associated Veduid gear: 1 pump drive unit is driven from the engine of the vehicle. Further, through the intermediate gear 3, the driven gear S with an additional gear Vend 6 of the gate. The lead is transmitted to the front pump 10 of the hydromechanical transmission and the pump 12. The power steering steering.

In the case of a sudden stop, the two gatel in the process of movement of the transport of the means enters the work

a pump 15 which is driven from the output shaft 7 of the gearbox by the pinion gear 13 and provides power to the hydraulic systems of the power steering and pncmechanical transmission, without allowing the vehicle to separate the wheels from the engine.

Due to the low suction height of the pumps and the compactness of their position, the reliability of the hydraulic systems is improved, the power losses for the drive of pumps are reduced; The efficiency of hydromechanical transmision reduces the laboriousness of manufacturing crankcase parts and pump fittings.

Claims (2)

Invention Formula 1 A vehicle's micromechanical transmission, comprising a housing in which a shaft gearbox is mounted, the output shaft of which is parallel to the input shaft, n a drive unit for hydromechanical transmission pumps, consisting of a pinion gear, a driven gear coupled to the gear wheel the front pump, the intermediate gear, which is engaged with the nominal drive and all the home scrubbing gears, and from the drive six of the rear of the gegon pump mounted on the output shaft to Transmission gearboxes, which is due to the fact that, in order to increase compactness and reduce power loss by reducing the suction height of the pumps, the gear drive unit gear is kinematically connected with the gear of the front pump and the hydraulic means, and installed by means of bearings on the front end of the output shaft of the gearbox, on which the rear pump drive gear is located, with this; stand by Small pumps are installed on the bottom of the transmission housing. 2. Trans M1USIA of J.. # -N., Characterized in that the said coupling is made in the form of an additional gear ring, the size of the mefffioro on the driven gear of the block of the front of the pump, and brought into engagement with the gears of the front pump and 571688-16 pumps hydraulic systems transport-1. The book Gorbunov P.-P. in others. General instruments, ro-mechanical transmissions of tractors, Sources of information, M., engineering, 1966, p. 340, accepted during examination. 161. 2 / F UN J .shr msh B P i1g-g soup fc- t t ti m FIG. 13 -.- L jffiTj 1gi w .. Top | llii tlili ti {i | u one J 5