SU1437258A1 - Articulated vehicle with combined transmission - Google Patents

Abstract

This invention relates to automotive and agricultural engineering, in particular to hydraulic drives of self-propelled machines. The aim of the invention is to increase the maneuverability and maneuverability of a multi-purpose vehicle by eliminating the kinematic mismatch between the rotational speeds of the driving wheels and the trailing links when reversing. The hydrostatic transmission pump 11 is equipped with an additional padron pump and a two-position hydraulic valve 22, the end cavities of which are connected respectively to the pressure or suction hydrolines of one of the pump sections, and the input of each of the throttle controllers 23 and 24 of the flow rate is connected to the corresponding pressure hydraulic line through There is a two-position distributor, and the output is with a hydraulic tank. 1 il. (L

Description

"

4b

WITH

ISP

SP

OS

Invented relates to the automotive engineering industry, in particular to the hydraulic characteristics of self-propelled machines, and can be used as a hydraulic transmission of activated trailed links of multi-link vehicles,

The purpose of the invention is to increase the vehicle’s maneuverability and maneuverability by eliminating the kinematic mismatch of the rotational speeds of the driving wheels and the trailing units when reversing.

The drawing shows a hydraulic transmission scheme.

A multilink transport device with a combined transmission consists of a tractor with a mechanical transmission and at least three active trailer links 2 and 3 with an Š-volumetric transmission, 1) the coupling nodes 4 and 5, controlling the folding angles - and J ,, Sensors D and 5 are connected, respectively, but with converters 6 and 7 of c by block 8 of multiplication 5 which are mounted on trailer links, starting from the second.

From the internal combustion engine 9 and the gearbox and the gearbox 10, the driving axle and the unregulated pumps 11 and 12 are driven. The pump 11 is connected by hydraulic lines; 13 and 14 is connected with the hydraulic motor 15ji and through the block 16 of non-return valves forming the makeup system, with a p-valve 17, the Pump 12 with hydraulic lines 18 and 19 is connected with the hydraulic motor 20, and through the block 21 of the return valve: with hydraulic tank 17. Hydrolines 13, 14 ;, 18 and 19 are connected to the inputs of the two-stage hydraulic distributor 22, the outputs of which are connected respectively to the inputs of the flow regulators 23 and 24, the outputs of which are connected to the hydraulic tank. 17, the shut-off and regulating elements of the flow rate controllers 23 and 24, respectively, are connected to the converter 6 and the output of the multiplication unit 8. The end chambers of the distributor 22 are respectively connected to the hydrolines 18 and 19 of the pump 12.

When the multilink vehicle is moving forward, the pumps 11 and 12 rotate in such a way that the hydraulic lines 14 and 19 are pressure and the hydraulic lines 13 and 18 are all

0

five

0

five

0

five

0

five

syvayup them. At the same time, the control valve 22 is in the initial position, connecting the inputs of the regulators 23 and 24 with the pressure hydraulic lines 14 and 19 of the pumps 11 and 12. The regulators 23 and 24, receiving signals from the converter 6 and the block 8, provide rotation of the hydraulic motors 15 and 20 at such a rate that the necessary kinematic correspondence is established between the active wheels MKf t of the gacha and the trailed links 2 and 3. When reversing the direction of movement of the multi-link vehicle, the pumps 11 and 12 change the direction of rotation, and the hydrolines 14 and 19 become sucking 1115 and the hydrolines 13 and 18 run, the distributor 22 switches to the second POSITION} and with the inputs of the regulators 23 and 24 flow rates are connected, respectively, lines 13 and 18. When the multi-stage vehicle is reversing, the same kinematic correlation between the actuary wheels of the driving wheel and the trailed links is the same as in the forward run.

Claims (1)

Invention Formula Multi-link vehicle with a combined transmission consisting of a tractor with a mechanical transmission and at least two trailed units with a hydraulic transmission comprising an unregulated pump5 connected by pumping and suction lines with hydraulic motor and hydraulic tank and the throttle control of flow with the valve -. a guiding element, kinematically associated with transducers of sensors of current angles between the longitudinal axles of the trailed links, characterized in that, in order to increase the maneuverability and maneuverability of the vehicle by eliminating the kinematic misalignment of the speeds of the driving wheels of the trailer and trailed links when reversing , ri-shiro-volumetric transmission is equipped with an additional pump, non-return valves and a two-way hydraulic valve with control cavities, which are dineny with blowing and suction line E of one of the hydraulic pump, wherein the injection and vsasshayuschie line coupled to the hydraulic tank through . 1A: - 725Я1 reverse klpany and third, fourth, howling control valve first the fifth and dough lines of the spreading hydrator line are connected to the third, and the purel line, the first and second lines of the last line, and in the second position of the first line, are connected to the inputs of the throttle distributor of the first line connector of the flow meter, and the second with dough connected to the hydraulic tank, and in the line.