CN201128374Y

CN201128374Y - Bidirectional vehicle transmission system

Info

Publication number: CN201128374Y
Application number: CNU2007201308388U
Authority: CN
Inventors: 张秋根; 姜国华; 刘开华
Original assignee: Changzhou Development and Manufacture Center Co Ltd
Current assignee: Changzhou Development and Manufacture Center Co Ltd
Priority date: 2007-12-10
Filing date: 2007-12-10
Publication date: 2008-10-08
Anticipated expiration: 2017-12-10

Abstract

The utility model relates to a two-way vehicle transmission system which comprises a variable pump, a variable motor, a first direction control valve, a second direction control valve, a first shuttle valve, a second shuttle valve and a manual reversing valve. The port P of the manual reversing valve is connected with the pressure control port G of the variable pump; ports A and B of the manual reversing valve are respectively connected with the port P of the first direction control valve and the port P of the second direction control valve; the port A of the first direction control valve and the port A of the second direction control valve are respectively connected with the port A and the port C of the first shuttle valve; the port B of the first direction control valve and the port B of the second direction control valve are respectively connected with the port A and the port C of the second shuttle valve; the port B of the first shuttle valve and the port B of the second shuttle valve are respectively connected with the two direction control ports Y1 and Y2 of the variable pump; the port T of the first direction control valve and the port T of the second direction control valve are both connected with a hydraulic system oil tank. The utility model is a two-way vehicle transmission system which is controlled by two driving chambers and mutually locked.

Description

Bidirectional steering vehicle transmission system

Technical field

The utility model relates to bidirectional steering vehicle transmission system.

Background technology

What adopted with tractor truck the disclosed down-hole of utility model patent specification sheets that China Patent No. is 00226372.6, name is called " four-wheel trackless rubber tire anti-explosion diesel tractor truck " is the mechanical type driving system; What adopted with rubber-tired cart the disclosed down-hole of utility model patent specification sheets that China Patent No. is 02285016.3, name is called " down-hole trackless assistant conveyance rubber-tired cart " is the hydraulic mechanical type driving system.Above-mentioned two kinds of down-holes all are one-way traffics with car, and in less crossheading of drift section or the belt lane during operation, vehicle can't be reversed end for end, so be not suitable in the less occasion effect of drift section under coal mine.For solving the transportation of crossheading or belt lane personnel and material, developing at present the railless free-wheeled vehicle of bidirectional driving, this railless free-wheeled vehicle two is provided with operator's compartment, two can both be driven by forward, owing to be bidirectional driving, driving system need satisfy the requirement that interlocking can both be controlled and can be reached to two operator'ies compartment, and the driving system of this and one-way traffic vehicle is distinguishing.

The utility model content

The purpose of this utility model is to propose a kind ofly can be subjected to control of two operator'ies compartment and bidirectional steering vehicle transmission system that again can interlocking.

For achieving the above object, the utility model is taked following technical scheme:

The utility model comprises auxiliary gear box, passes through forward and backward transmission shaft and the forward and backward drive axle of auxiliary gear box output shaft bonded assembly, it is characterized in that: it also comprise with driving engine by elastic clutch bonded assembly controllable capacity pump, with the corresponding hydraulic fluid port bonded assembly of controllable capacity pump variable-dis-placement motor, be separately positioned on a directional control valve in two operator'ies compartment, No. two directional control valves, in addition, also be provided with shuttle valve, No. two shuttle valves and hand change over valve; The output shaft of above-mentioned variable-dis-placement motor is connected with auxiliary gear box; The P mouth of above-mentioned hand change over valve is that the G mouth is connected with the pressure control mouth of controllable capacity pump, and the A mouth of hand change over valve, B mouth are connected with the P mouth of a directional control valve, the P mouth of No. two directional control valves respectively; The A mouth of a directional control valve is connected with A mouth, the C mouth of a shuttle valve respectively with the A mouth of No. two directional control valves, the B mouth of a directional control valve is connected with A mouth, the C mouth of No. two shuttle valves respectively with the B mouth of No. two directional control valves, it is that Y1 mouth, Y2 mouth are connected that the B mouth of a shuttle valve, the B mouth of No. two shuttle valves are controlled mouth with two directions of controllable capacity pump respectively, and the T mouth of a described directional control valve, the T mouth of No. two directional control valves all are connected with hydraulic reservoir.

Described controllable capacity pump is the shaft orientation plunger variable pump of built-in DA valve and slippage pump.

Described variable-dis-placement motor is a bent shaft type plunger variable motor.

Described change-over valve is two position and four-way reversing valves.

A described directional control valve and No. two directional control valves are proportional pressure-reducing valve.

Be connected with system pressure table, oil compensation pressure table and vacuum indicator on the controllable capacity pump.

The utlity model has following good effect:

1, No. one, No. two directional control valves that the utlity model has hand change over valve and manually operated, making driving system can satisfy two operator'ies compartment can both control, and all has the function of " advancing ", " retreating ".In running order when a directional control valve, then No. two directional control valves lock; Otherwise in running order when No. two directional control valves, then a directional control valve locking realizes interlocking.

2, the utility model adopts hydrostatic-machine driven system, and is simple in structure, compact, in light weight, realizes that stepless change and work are steadily correct.

3, the utility model since adopt the control of DA valve controllable capacity pump, that speed governing is handled is very simple owing to have the control of DA valve, native system has automatic drive controlling and anti-ly suppresses car control, and additional servo control and the system's control of braking of going beyond one's commission arranged.Anti-suppress power that car control guarantees that controllable capacity pump adjusts its consumption to from the obtainable power of diesel engine; And when vehicle transshipped, the anti-car control minimizing variable capacity of pump of suppressing was up to preventing that diesel engine is flame-out.

Description of drawings

For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the utility model is described in further detail, wherein

Fig. 1 is a constructional drawing of the present utility model;

Fig. 2 is a hydraulic schematic diagram of the present utility model.

The specific embodiment

The accompanying drawing illustrated embodiment comprises mechanics and hydraulic part.Mechanics comprise with driving engine 6 by elastic clutch bonded assembly controllable capacity pump 7, with controllable capacity pump 7 corresponding hydraulic fluid port bonded assembly variable-dis-placement motors 8, and the output shaft bonded assembly auxiliary gear box 13 of variable-dis-placement motor 8, by the forward and backward

drive axle

16,17 of the output shaft bonded assembly of forward and

backward transmission shaft

14,15 and auxiliary gear box 13, drive axle drives forward and backward wheel revolutions through speed reduction gearing.Hydraulic part comprises and is separately positioned in two operator'ies compartment and by a driver-operated directional control valve 1 and No. two directional control valves 2, in addition, also is provided with shuttle valve 3, No. two shuttle valves 4 and hand change over valves 5.Be connected with system pressure table 10, oil compensation pressure table 11 and vacuum indicator 12 on the controllable capacity pump 7.Above-mentioned controllable capacity pump 7 is the shaft orientation plunger variable pump of built-in DA valve and slippage pump.Above-mentioned variable-dis-placement motor 8 is bent shaft type plunger variable motors.Above-mentioned change-over valve 5 is two position and four-way reversing valves.An above-mentioned directional control valve 1 and No. two directional control valves 2 are proportional pressure-reducing valve.

The P mouth of above-mentioned hand change over valve 5 is that the G mouth is connected with the pressure control mouth of controllable capacity pump 7, and the A mouth of hand change over valve 5, B mouth are connected with the P mouth of a directional control valve 1, the P mouth of No. two directional control valves 2 respectively; The A mouth of a directional control valve 1 is connected with A mouth, the C mouth of a shuttle valve 3 respectively with the A mouth of No. two directional control valves 2, the B mouth of a directional control valve 1 is connected with A mouth, the C mouth of No. two shuttle valves 4 respectively with the B mouth of No. two directional control valves 2, it is that Y1 mouth, Y2 mouth are connected that the B mouth of a shuttle valve 3, the B mouth of No. two shuttle valves 4 are controlled mouth with two directions of controllable capacity pump 7 respectively, and the T mouth that a described direction is controlled the T mouth of 1 valve, No. two directional control valves 2 all is connected with hydraulic reservoir 9.

When handling in the operator's compartment that a directional control valve 1 is set, when the P mouth conducting of the A of hand change over valve 5 mouth and a directional control valve 1, No. two directional control valves 2 were in meta and promptly locked this moment.The A mouth conducting of the A mouth of a directional control valve 1 and a shuttle valve 3, the Y1 mouth conducting of the B mouth of a shuttle valve 3 and controllable capacity pump 7, controllable capacity pump 7 drives variable-dis-placement motor 8 and rotates to a direction, variable-dis-placement motor 8 drives wheel revolutions (supposing to advance), P mouth conducting when the A of hand change over valve 5 mouth and a directional control valve 1, the A mouth conducting of the B mouth of a directional control valve 1 and No. two shuttle valves 4, the Y2 mouth conducting of the B mouth of No. two shuttle valves 4 and controllable capacity pump 7, this moment, the flow direction of hydraulic oil changed, controllable capacity pump 7 drives variable-dis-placement motor 8 opposite spins, and variable-dis-placement motor 8 drives wheel and retreats.When directional control valve was in meta, P mouth, A mouth, B mouth and the not conducting mutually of T mouth were in neutral gear.

Same principle, when handling in the operator's compartment that No. two directional control valves 2 are set, car still can be realized advancing, fallback function.

Controllable capacity pump 7 built-in DA valve and slippage pumps of the present utility model.The driver is when stepping on the throttle pedal, and engine speed rises, different engine speeds, and controllable capacity pump 7 can be with the corresponding rotating speeds running, and slippage pump is coaxial to be built in the walking oil pump, can export corresponding ratio oil mass; Slippage pump output oil mass is measured by the velocity response valve in the walking pump, and many more by the flow of velocity response valve, controllable capacity pump 7 discharge capacities are also big more, and fuel feeding is also many more, and corresponding vehicle speed increases like this.Vehicle heavy duty climbing or heavily loaded high-speed cruising enter the car situation of suppressing, and system provides the necessary tractive force of vehicle to overcome all resistances with specific pressure.System pressure rises, and the controllable capacity pump of pressure sensitive simultaneously reduces flow and avoids the diesel engine overload.If system pressure surpasses setting value, the pressure break-in facility of controllable capacity pump reduces the flow of controllable capacity pump.Its discharge capacity of controllable capacity pump adjustment is kept whole system pressures (being tractive force limit) and can not allowed system's heating.

The variable-dis-placement motor discharge capacity is by the control of DA valve, and the locomotive load is little, and the variable-dis-placement motor discharge capacity is little, and the speed of a motor vehicle is fast; The locomotive load is big, and the variable-dis-placement motor discharge capacity is big, and the speed of a motor vehicle is slow.

Claims

1, a kind of bidirectional steering vehicle transmission system, comprise auxiliary gear box (13), pass through forward and backward transmission shaft (14,15) and the forward and backward drive axle of auxiliary gear box output shaft bonded assembly (16,17), it is characterized in that: it also comprise with driving engine (6) by elastic clutch bonded assembly controllable capacity pump (7), with controllable capacity pump (7) corresponding hydraulic fluid port bonded assembly variable-dis-placement motor (8), be separately positioned on a directional control valve (1), No. two directional control valves (2) in two operator'ies compartment, in addition, also be provided with a shuttle valve (3), No. two shuttle valves (4) and hand change over valve (5); The output shaft of above-mentioned variable-dis-placement motor (8) is connected with auxiliary gear box (13); The P mouth of above-mentioned hand change over valve (5) is that the G mouth is connected with the pressure control mouth of controllable capacity pump (7), and the A mouth of hand change over valve (5), B mouth are connected with the P mouth of a directional control valve (1), the P mouth of No. two directional control valves (2) respectively; The A mouth of a directional control valve (1) is connected with A mouth, the C mouth of a shuttle valve (3) respectively with the A mouth of No. two directional control valves (2), the B mouth of a directional control valve (1) is connected with A mouth, the C mouth of No. two shuttle valves (4) respectively with the B mouth of No. two directional control valves (2), it is that Y1 mouth, Y2 mouth are connected that the B mouth of the B mouth of a shuttle valve (3), No. two shuttle valves (4) is controlled mouth with two directions of controllable capacity pump (7) respectively, and the T mouth of described direction control (1) valve, the T mouth of No. two directional control valves (2) all are connected with hydraulic reservoir (9).

2, bidirectional steering vehicle transmission system according to claim 1 is characterized in that: controllable capacity pump (7) is the shaft orientation plunger variable pump of built-in DA valve and slippage pump.

3, bidirectional steering vehicle transmission system according to claim 1 is characterized in that: variable-dis-placement motor (8) is a bent shaft type plunger variable motor.

4, bidirectional steering vehicle transmission system according to claim 1 is characterized in that: described change-over valve (5) is two position and four-way reversing valves.

5, bidirectional steering vehicle transmission system according to claim 1 is characterized in that: a described directional control valve (1) and No. two directional control valves (2) are proportional pressure-reducing valve.

6, according to the described bidirectional steering vehicle transmission system of one of claim 1～5, it is characterized in that: be connected with system pressure table (10), oil compensation pressure table (11) and vacuum indicator (12) on the controllable capacity pump (7).