SU785070A2

SU785070A2 - Vehicle transmission

Info

Publication number: SU785070A2
Application number: SU782692233A
Authority: SU
Inventors: Евгений Николаевич Козлов; Александр Степанович Солонский; Михаил Григорьевич Мелешко; Иван Иванович Болвако; Владимир Мефодьевич Семенов; Виктор Петрович Дудовцов; Александр Николаевич Шимко
Original assignee: Предприятие П/Я Р-6194
Priority date: 1978-12-07
Filing date: 1978-12-07
Publication date: 1980-12-07

Description

(54) КОРОБКА ПЕРЕДАЧ ДЛЯ ТРАНСПОРТНОГО (54) TRANSMISSION BOX FOR TRANSPORT

II

Изобретение относитс к транспортному машиностроению.FIELD: transport engineering.

По основному авт. св. № 511236 известна коробка передач дл транспортного средства , содержаща корпус, в котором размещены соосные входной и выходной валы, промежуточный вал, нереверсивный вал пониженных передач, шестерни посто нного зацеплени , свободно установленные на валах , фрикционные муфты, установленные на входном валу, зубчатые муфты, одна из которых установлена на промежуточном валу, а друга - на нереверсивном валу, и управл ющую гидросистему, включающую передний насос, приводимый от двигател , и задний насос, св занный через щестерни посто нного зацеплени промежуточного вала при помощи фрикционных муфт с входным валом, а через щестерни посто нного зацеплени промежуточного вала и зубчатую муфту, размещенную на нем,- с выходным валом 1.According to the main author. St. No. 511236 is a known gearbox for a vehicle, comprising a housing housing coaxial input and output shafts, an intermediate shaft, a non-reversing downshift shaft, gears of permanent engagement, freely mounted on shafts, friction clutches mounted on the input shaft, gear couplings, one of which is mounted on the intermediate shaft, and the other on the non-reversible shaft, and a control hydraulic system, including a front pump driven by the engine, and a rear pump connected through constant pinwheels the engagement of the intermediate shaft with the help of friction clutches with the input shaft, and through the pinions of the permanent engagement of the intermediate shaft and the gear coupling placed on it, with the output shaft 1.

Однако вследствие того, что многодисковые гидроуправл емые фрикционные муфты , расположенные на входном валу, не обеспечивают необходимую чистоту выклю-. СРЕДСТВА However, due to the fact that multidisk hydraulically controlled friction clutches located on the input shaft do not provide the required cleanliness of the shut-off. FACILITIES

чени , т. е. не обеспечивают надежного рассоединени входного и последующих валов, переключение диапазонов зубчатыми муфтами происходит с повыщенным щумом вследствие разных относительных скоростей 5 соедин емых элементов. Ввиду того что не обеспечиваетс безударное включение, происходит повышенный износ зубчатых муфт, что снижает долговечность коробки передач.This means that they do not ensure reliable disconnection of the input and subsequent shafts, switching of the ranges by gear couplings occurs with increased ground due to different relative speeds of 5 connected elements. Due to the fact that unstressed engagement is not ensured, increased wear of the gear couplings occurs, which reduces the durability of the gearbox.

Целью изобретени вл етс повышение надежности и долговечности за счет обеспе чени безударного включени зубчатых муфт переключени диапазонов.The aim of the invention is to increase reliability and durability by providing a shock-free engagement of gear-box sleeves.

Поставленна цель достигаетс тем, что управл юща гидросистема снабжена управл емыми напорнйм клапаном, установ ,5 ленным в участке нагнетательной магистрали , сообщенном с задним насосом, при этом орган управлени напорным клапаном кинематически св зан с рычагами управлени коробки передачи.The goal is achieved by the fact that the control hydraulic system is equipped with a controllable pressure valve, 5 installed in the section of the discharge line connected to the rear pump, while the pressure valve control body is kinematically connected with the gearbox control levers.

На чертеже приведена схема коробки 20 передач.The drawing shows a diagram of a box of 20 gears.

Claims

The gearbox for the vehicle contains input, output 2 and intermediate 3 shafts, non-reversible shaft 4 downshifts, as well as the shaft 5 of the rear pump drive. On the input shaft 1 there are multidisk, hydraulically controlled friction clutches 6 and 7 for shifting gears in motion and freely sitting (gears 8, 9, 10 and 11, which are permanently engaged with gears 12, 13, 14 and 15, rigidly mounted on intermediate shaft 3. Sliding gear sleeves 16 and 17 are mounted on the non-reversing shaft 4 downshift gears and intermediate shaft 3 for engaging ranges. Gear 18, rigidly mounted on the output shaft 2, is simultaneously hooked on Mr. mi 19 and 20, free not mounted on the intermediate shaft 3 and the non-reversing shaft 4 downshifts, and the gear 21, which is free to sit on the non-reversing shaft 4 downshifts, is kinematically connected with the gear 22, rigidly mounted on the output shaft 2, through a jaw 23. Irreversible shaft The 4 downshifts are kinematically connected to the countershaft 3 via gears 24, 25, 26, and 27 of permanent engagement, while gears 25 and 26 are fixedly mounted on the shaft 5 of the rear pump drive. The front pump 28 via shaft 29, gears 30, 31 and hollow shaft 32 is kinematically connected to the crankshaft of the engine 33. A control pressure valve 35 is connected to the discharge line of the rear pump 34, which is connected to the control lever 36. When driving with the engine running (one of the gearbox clutches is engaged), the front pump 28 and the rear pump 34 are driven by the engine and supply oil to the common discharge pipe 37. When switching ranges, the input shaft slip clutches are turned off, but coupled with the drums of the clutches 6, 7, discs associated with gears 8, 9, 10 and 11 due to the presence of an oil film between them, rotates the intermediate shaft 3 and the shaft 5 of the rear pump drive, which feeds oil to the discharge line . With the help of a pressure valve 35 controlled by the lever 36, the pressure in the discharge line 37 is increased. This creates additional resistance to turning the rear pump 34, which causes the rear pump drive shaft 5 and the associated gears to stop. shaft 3 and non-reversing shaft 4 downshifts. The use of the technical solution will ensure the hammerless engagement of the gear couplings when shifting gear ranges, thereby eliminating the end wear of the coupling teeth and engaging gears. In addition, this solution eliminates the noise when switching gear ranges, improving working conditions. Claims Transmission for vehicle auth. St. N ° 511236, characterized in that, in order to increase reliability and durability by providing an unaccented activation of the sponge-type range sleeves, the control hydraulic system of supply 1a is controlled by a pressure valve installed in the section of the discharge line connected to the rear pump, The pressure valve control is kinematically coupled to the gear lever. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 511236, cl. B 60 C 17/08, 1972.

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