CN201158406Y - Steering hydraulic system of bidirectional drive vehicle - Google Patents
Steering hydraulic system of bidirectional drive vehicle Download PDFInfo
- Publication number
- CN201158406Y CN201158406Y CNU2007201308373U CN200720130837U CN201158406Y CN 201158406 Y CN201158406 Y CN 201158406Y CN U2007201308373 U CNU2007201308373 U CN U2007201308373U CN 200720130837 U CN200720130837 U CN 200720130837U CN 201158406 Y CN201158406 Y CN 201158406Y
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- valve
- hydraulic
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- steering
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Abstract
A hydraulic steering system of a bidirectional steering vehicle includes a steering interlocking change valve, as well as a first steering gear and a second steering gear which are arranged in two cabs; a port P of the steering interlocking change valve is connected with an oil outlet of a hydraulic pump; first and second bidirectional buffering oil supply combination valves and first and second steering hydraulic cylinders are also provided; two oil cylinders are arranged, the piston in one oil cylinder extends outwards while the piston in the other oil cylinder retracts inwards in steering, so as to apply the steering force to the left side and the right side of an articulated seat of the rear frame, thereby steering is sensitive and the turning radius is small. Since the steering change value is provided, when one cab controls steering, the steering control of the other cab is locked.
Description
Technical field
The utility model relates to bidirectional steering vehicle turning hydraulic system.
Background technology
China Patent No. is that 02285016.3 the disclosed down-hole of utility model patent specification sheets trackless assistant conveyance rubber-tired cart comprises driving engine, driving system, explosion protection system, hydraulic efficiency pressure system, pneumatic and electric system are installed, and is hinged between the forward and backward frame of this transportation rubber-tired cart.The disclosed loader of utility model patent specification sheets that China Patent No. is 200620083271.9, name is called " the wheeled underground loader of 4 wheel driven " comprises front vehicle body, aftercarriage, and front vehicle body is connected by oscillating axle with aftercarriage.Above-mentioned down-hole is an one-way traffic 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 has forward and backward vehicle frame, hinged between the forward and backward vehicle frame, front vehicle frame is provided with main operator's compartment, back vehicle frame is provided with the copilot chamber, and major and minor operator's compartment can both be driven by forward.Owing to be bidirectional driving, steering swivel system need satisfy the requirement that interlocking can both be handled and can be reached to two operator'ies compartment, and the steering swivel system of this and one-way traffic vehicle is distinguishing.China's Granted publication number be the disclosed vehicle bidirectional driving of the utility model patent specification sheets hydraulic efficiency gear of 2664968Y by pressure-gradient control valve, distributing valve, two deflectors, turn to oil cylinder to form.Pressure-gradient control valve is connected with two deflectors by distributing valve, and two deflectors all can be handled the steering oil cylinder working, thereby realizes that former and later two directions or two diverse location maneuver vehicle turn to.Above-mentioned bidirectional driving hydraulic efficiency gear is not suitable for using on the pivotally attached vehicle between the vehicle frame of front and back.
The utility model content
The purpose of this utility model is to propose a kind ofly to be applicable to pivotally attached vehicle between the forward and backward vehicle frame central authorities, can accept to be separately positioned on the bidirectional steering vehicle turning hydraulic system that two operator'ies compartment on the forward and backward vehicle frame are handled and again can interlocking.
For achieving the above object, the utility model is taked following technical scheme:
The utility model comprises a deflector and No. two deflectors that turns to the interlocking change-over valve interior with being provided in two operator'ies compartment, turns to the P mouth of interlocking change-over valve and the oil outlet of Hydraulic Pump to be connected; Also be provided with No. one, No. two bidirectional buffering repairing combine valves and No. one, No. two hydraulic steering cylinders;
The above-mentioned A mouth of interlocking change-over valve that turns to is connected with the P mouth of a bidirectional buffering valve repairing combine valve; The P mouth of an above-mentioned deflector, T mouth, A mouth, B mouth connect with each corresponding hydraulic fluid port of bidirectional buffering repairing combine valve; The A mouth of an above-mentioned bidirectional buffering repairing combine valve is connected with the B mouth of the A mouth of a hydraulic steering cylinder, No. two hydraulic steering cylinders; The B mouth of a bidirectional buffering repairing combine valve is connected with the B mouth of the A mouth of No. two hydraulic steering cylinders, a hydraulic steering cylinder, and the T mouth of a bidirectional buffering repairing combine valve is connected with hydraulic reservoir;
The above-mentioned B mouth of interlocking change-over valve and the P mouth of No. two bidirectional buffering valve repairing combine valves of turning to is connected; The P mouth of above-mentioned No. two deflectors, T mouth, A mouth, B mouth connect with No. two each corresponding hydraulic fluid port of bidirectional buffering repairing combine valve; The A mouth of above-mentioned No. two bidirectional buffering repairing combine valves is connected with the B mouth of the A mouth of a hydraulic steering cylinder, No. two hydraulic steering cylinders; The B mouth of No. two bidirectional buffering repairing combine valves is connected with the B mouth of the A mouth of No. two hydraulic steering cylinders, a hydraulic steering cylinder, and the T mouth of No. two bidirectional buffering repairing combine valves is connected with hydraulic reservoir.
A described bidirectional buffering repairing combine valve comprises a check valve between the P mouth that is connected the A mouth that turns to change-over valve and a deflector and is connected the security of system valve of the A mouth of a check valve, the T mouth of security of system valve is connected with hydraulic reservoir, the check valve that also comprises the two relative settings of bidirectional buffering valve that are provided with relatively with two, the P mouth of one two-way cushion valve and the A mouth of a check valve are connected between the A mouth of the A mouth of a deflector and a bidirectional buffering repairing combine valve, the P mouth of another bidirectional buffering valve and the A mouth of another check valve are connected between the B mouth of the B mouth of a deflector and a bidirectional buffering repairing combine valve, and the T mouth of two bidirectional buffering valves all is connected with hydraulic reservoir with the P mouth of two check valves.
Described No. two bidirectional buffering repairing combine valves comprise a check valve between the P mouth that is connected the B mouth that turns to change-over valve and No. two deflectors and are connected the security of system valve of the A mouth of a check valve that the T mouth of security of system valve is connected with hydraulic reservoir; The check valve that also comprises the two relative settings of bidirectional buffering valve that are provided with relatively with two, the P mouth of one two-way cushion valve and the A mouth of a check valve are connected between the A mouth of the A mouth of No. two deflectors and No. two bidirectional buffering repairing combine valves, the P mouth of another bidirectional buffering valve and the A mouth of another check valve are connected between the B mouth of the B mouth of No. two deflectors and No. two bidirectional buffering repairing combine valves, and the T mouth of two bidirectional buffering valves all is connected with hydraulic reservoir with the P mouth of two check valves.
Described No. one, No. two deflectors are all-hydraulic steering gear.
The described interlocking change-over valve that turns to is two position and four-way reversing valves.
Two hydraulic steering cylinders are double-acting piston hydraulic actuating cylinders.
The utlity model has following good effect:
1, the utility model is provided with two oil cylinders, and when turning to, an oil cylinder piston is protruding, and an oil cylinder piston inwardly shrinks, and the left and right sides of hinged seat to the back vehicle frame applies steering effort respectively, so the sensitivity of turning to, turn radius is little.Owing to have a change-over valve of turning to, when an operator's compartment turns in manipulation, the handling maneuver of operator's compartment is promptly locked in addition.
2, the utility model is provided with bidirectional buffering repairing combine valve, and bidirectional buffering repairing combine valve has three effects greatly: 1. the security of system valve is provided with the maximum pressure that can limit deflector.2. when a certain side of wheel ran into bigger resistance (as stone, pit etc.), the bidirectional buffering valve events shielded.3. when the pressure of oil cylinder one side was higher than the pressure of pump, a check valve prevented that high pressure oil from flowing backwards by deflector, in the time of can also preventing manual steering in the air admission oil pump.
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
Accompanying drawing is an embodiment of the present utility model, and what use present embodiment is the railless free-wheeled vehicle that is applicable to the down-hole.Respectively be provided with an operator's compartment on the forward and backward vehicle frame of this car, the operator's saddle forward arranges, forward and backward vehicle frame central authorities are hinged.Present embodiment comprises oil suction oil filter 1, Hydraulic Pump 2, turn to interlocking change-over valve 3 and be provided in the deflector 9 in two operator'ies compartment, No. two deflectors 6, a deflector 9 is provided with steering apparatus 10, No. two deflectors 6 are provided with steering apparatus 5, turn to the P mouth of interlocking change-over valve 3 to be connected with the fuel-displaced of Hydraulic Pump 2.In addition, also comprise bidirectional buffering repairing combine valve 8, No. two bidirectional buffering repairing combine valves 4 and hydraulic steering cylinder 12, No. two hydraulic steering cylinders 7.No. one bidirectional buffering valve repairing combine valve 8 is installed in the deflector 9, and No. two bidirectional buffering valve repairing combine valve 4 is installed in No. two deflectors 6.
A hydraulic steering cylinder 12 and No. two hydraulic steering cylinders 7 are installed on the frame, and the two-piston bar applies steering effort to the left and right sides of back vehicle frame hinged seat 13 respectively.
The above-mentioned P mouth of interlocking change-over valve 3 and the oil outlet of Hydraulic Pump 2 of turning to is connected, and the T mouth blocks up with plug screw.The above-mentioned A mouth of interlocking change-over valve 3 that turns to is connected with the P mouth of a bidirectional buffering valve repairing combine valve 8; The P mouth of an above-mentioned deflector 9, T mouth, A mouth, B mouth connect with bidirectional buffering repairing combine valve 8 each corresponding hydraulic fluid port; The A mouth of an above-mentioned bidirectional buffering repairing combine valve 8 is connected with the B mouth of the A mouth of a hydraulic steering cylinder 12, No. two hydraulic steering cylinders 7; The B mouth of a bidirectional buffering repairing combine valve 8 is connected with the B mouth of the A mouth of No. two hydraulic steering cylinders 7, a hydraulic steering cylinder 12, and the T mouth of a bidirectional buffering repairing combine valve 8 is connected with hydraulic reservoir 11;
The above-mentioned B mouth of interlocking change-over valve 3 and the P mouth of No. two bidirectional buffering valve repairing combine valves 4 of turning to is connected; The P mouth of above-mentioned No. two deflectors 6, T mouth, A mouth, B mouth connect with No. two bidirectional buffering repairing combine valve 4 each corresponding hydraulic fluid port; The A mouth of above-mentioned No. two bidirectional buffering repairing combine valves 4 is connected with the B mouth of the A mouth of a hydraulic steering cylinder 12, No. two hydraulic steering cylinders 7; The B mouth of No. two bidirectional buffering repairing combine valves 4 is connected with the B mouth of the A mouth of No. two hydraulic steering cylinders 7, a hydraulic steering cylinder 12, and the T mouth of No. two bidirectional buffering repairing combine valves 4 is connected with hydraulic reservoir 11.
A described bidirectional buffering repairing combine valve 8 comprises a check valve 8-1 between the P mouth that is connected the A mouth that turns to change-over valve 3 and a deflector 9 and is connected the security of system valve 8-2 of the A mouth of a check valve 8-1 that the T mouth of security of system valve 8-2 is connected with hydraulic reservoir 11.Also comprise two bidirectional buffering valve 8-3, check valve 8-5, the 8-6 of the relative setting of 8-4 that are provided with relatively with two.The A mouth of the P mouth of one two-way cushion valve 8-3 and a check valve 8-5 is connected between the A mouth of the A mouth of a deflector 9 and a bidirectional buffering repairing combine valve 8, the P mouth of another bidirectional buffering valve 8-4 and the A mouth of another check valve 8-6 are connected between the B mouth of the B mouth of a deflector 9 and a bidirectional buffering repairing combine valve 8, and the T mouth of two bidirectional buffering valve 8-3,8-4 all is connected with hydraulic reservoir 11 with the P mouth of two check valve 8-5,8-6.
Described No. two bidirectional buffering repairing combine valves 4 comprise a check valve 4-1 between the P mouth that is connected the B mouth that turns to change-over valve 3 and No. two deflectors 6 and are connected the security of system valve 4-2 of the A mouth of a check valve 4-1, the T mouth of security of system valve 4-2 is connected with hydraulic reservoir 11, also comprises two bidirectional buffering valve 4-3, check valve 4-5, the 4-6 of the relative setting with two of 4-4 that are provided with relatively.The A mouth of the P mouth of one two-way cushion valve 4-3 and a check valve 4-5 is connected between the A mouth of the A mouth of No. two deflectors 6 and No. two bidirectional buffering repairing combine valves 4, the P mouth of another bidirectional buffering valve 4-4 and the A mouth of another check valve 4-6 are connected between the B mouth of the B mouth of No. two deflectors 6 and No. two bidirectional buffering repairing combine valves 4, and the T mouth of two bidirectional buffering valve 4-3,4-4 all is connected with hydraulic reservoir 11 with the P mouth of two check valve 4-5,4-6.
An above-mentioned deflector 9, No. two deflectors 6 are all-hydraulic steering gear.The described interlocking change-over valve 3 that turns to is two position and four-way reversing valves.Hydraulic steering cylinder 12, No. two hydraulic steering cylinders 7 all are double-acting piston hydraulic actuating cylinders.
Described when turning to interlocking change-over valve 3 to be in initial position, Hydraulic Pump 2 is given deflector 9 fuel feeding, when No. one steering apparatus 10 does not rotate, a deflector 9 is in meta, the non-loaded off-load of Hydraulic Pump 2 fuel feeding, hydraulic steering cylinder 12, No. two hydraulic steering cylinders 7 do not have fuel feeding, are failure to actuate.
During steering apparatus 10 turning clockwises, the A mouth of A mouth to a hydraulic actuating cylinder 12 of the A mouth of the fuel feeding of Hydraulic Pump 2 through turning to interlocking change-over valve 3, the A mouth of a bidirectional buffering valve repairing combine valve 8, a deflector 9, the B mouth of No. two hydraulic actuating cylinders 7 drive hydraulic steering cylinder, realize that railless free-wheeled vehicle turns to.The oil return of the B mouth of a hydraulic ram 12, the A mouth of No. two hydraulic rams 7 is got back to hydraulic reservoir 11 through the B mouth of a bidirectional buffering valve repairing combine valve 8.
When No. one steering apparatus 10 turns left, Hydraulic Pump 2 gives the fuel feeding of a deflector 9 through turning to the A mouth of interlocking change-over valve 3, the A mouth of the B mouth of a bidirectional buffering valve repairing combine valve 8, B mouth to two hydraulic steering cylinder 7 of a deflector 9, the B mouth of a hydraulic steering cylinder 12 drive hydraulic steering cylinder, realize that railless free-wheeled vehicle turns to.The A mouth oil return of the B mouth of a hydraulic steering cylinder 7, No. two hydraulic steering cylinders 12 is got back to system's hydraulic reservoir 11 through the A mouth of a bidirectional buffering valve repairing combine valve 8.
When turning to interlocking change-over valve 3 to be in commutation position, Hydraulic Pump 2 is given No. two deflector 6 fuel feeding, and principle of work is the same.
Security of system valve action in the described bidirectional buffering valve repairing combine valve is the maximum pressure of restriction deflector.
Bidirectional buffering valve action in the described bidirectional buffering valve repairing combine valve be when wheel when a certain side runs into bigger resistance such as stone, pit etc.; the cushion valve action; the pressure of hydraulic steering cylinder raises; the cavity pressure of supposing hydraulic steering cylinder 12 corresponding A mouths raises; bidirectional buffering valve 8-3 moment is opened oil spilling; by in the chamber of check valve 8-6 fluid infusion to a hydraulic steering cylinder 12 corresponding B mouths, shield thus simultaneously.
A check valve effect in the described bidirectional buffering valve repairing combine valve is when the pressure of oil cylinder one side is higher than the pressure of pump, prevents that high pressure oil from flowing backwards by deflector, in the time of can also preventing manual steering in the air admission oil pump.
Claims (6)
1, a kind of bidirectional steering vehicle turning hydraulic system comprises turning to interlocking change-over valve (3) and being provided in two operator'ies compartment interior a deflector (9) and No. two deflectors (6), turns to the P mouth of interlocking change-over valve (3) and the oil outlet of Hydraulic Pump (2) to be connected; It is characterized in that: also be provided with No. one, No. two bidirectional buffering repairing combine valves (8,4) and No. one, No. two hydraulic steering cylinders (12,7);
The above-mentioned A mouth of interlocking change-over valve (3) that turns to is connected with the P mouth of a bidirectional buffering valve repairing combine valve (8); The P mouth of an above-mentioned deflector (9), T mouth, A mouth, each corresponding hydraulic fluid port of a B mouth and a bidirectional buffering repairing combine valve (8) connect; The A mouth of an above-mentioned bidirectional buffering repairing combine valve (8) is connected with the A mouth of a hydraulic steering cylinder (12), the B mouth of No. two hydraulic steering cylinders (7); The B mouth of a bidirectional buffering repairing combine valve (8) is connected with the A mouth of No. two hydraulic steering cylinders (7), the B mouth of a hydraulic steering cylinder (12), and the T mouth of a bidirectional buffering repairing combine valve (8) is connected with hydraulic reservoir (11);
The above-mentioned B mouth of interlocking change-over valve (3) and the P mouth of No. two bidirectional buffering valve repairing combine valves (4) of turning to is connected; The P mouth of above-mentioned No. two deflectors (6), T mouth, A mouth, each corresponding hydraulic fluid port of B mouth and No. two bidirectional buffering repairing combine valves (4) connect; The A mouth of above-mentioned No. two bidirectional buffering repairing combine valves (4) is connected with the A mouth of a hydraulic steering cylinder (12), the B mouth of No. two hydraulic steering cylinders (7); The B mouth of No. two bidirectional buffering repairing combine valves (4) is connected with the A mouth of No. two hydraulic steering cylinders (7), the B mouth of a hydraulic steering cylinder (12), and the T mouth of No. two bidirectional buffering repairing combine valves (4) is connected with hydraulic reservoir (11).
2, bidirectional steering vehicle turning hydraulic system according to claim 1, it is characterized in that: a described bidirectional buffering repairing combine valve (8) comprises the check valve (8-1) between the P mouth that is connected the A mouth that turns to change-over valve (3) and a deflector (9) and is connected the security of system valve (8-2) of the A mouth of a check valve (8-1), the T mouth of security of system valve (8-2) is connected with hydraulic reservoir (11), also comprise the two bidirectional buffering valve (8-3 that are provided with relatively, 8-4) check valve (the 8-5 of relative setting with two, 8-6), the A mouth of the P mouth of one two-way cushion valve (8-3) and a check valve (8-5) is connected between the A mouth of the A mouth of a deflector (9) and a bidirectional buffering repairing combine valve (8), the A mouth of the P mouth of another bidirectional buffering valve (8-4) and another check valve (8-6) is connected between the B mouth of the B mouth of a deflector (9) and a bidirectional buffering repairing combine valve (8), two bidirectional buffering valve (8-3, T mouth 8-4) and two check valve (8-5, P mouth 8-6) all is connected with hydraulic reservoir (11).
3, bidirectional steering vehicle turning hydraulic system according to claim 1, it is characterized in that: described No. two bidirectional buffering repairing combine valves (4) comprise the check valve (4-1) between the P mouth that is connected the B mouth that turns to change-over valve (3) and No. two deflectors (6) and are connected the security of system valve (4-2) of the A mouth of a check valve (4-1) that the T mouth of security of system valve (4-2) is connected with hydraulic reservoir (11); Also comprise the two bidirectional buffering valve (4-3 that are provided with relatively, 4-4) check valve (the 4-5 of relative setting with two, 4-6), the A mouth of the P mouth of one two-way cushion valve (4-3) and a check valve (4-5) is connected between the A mouth of the A mouth of No. two deflectors (6) and No. two bidirectional buffering repairing combine valves (4), the A mouth of the P mouth of another bidirectional buffering valve (4-4) and another check valve (4-6) is connected between the B mouth of the B mouth of No. two deflectors (6) and No. two bidirectional buffering repairing combine valves (4), two bidirectional buffering valve (4-3, T mouth 4-4) and two check valve (4-5, P mouth 4-6) all is connected with hydraulic reservoir (11).
4, according to the described bidirectional steering vehicle turning hydraulic system of one of claim 1 to 3, it is characterized in that: described No. one, No. two deflectors (9,6) are all-hydraulic steering gear.
5, according to the described bidirectional steering vehicle turning hydraulic system of one of claim 1 to 3, it is characterized in that: the described interlocking change-over valve (3) that turns to is two position and four-way reversing valves.
6, according to the described bidirectional steering vehicle hydrostatic steering system of one of claim 1 to 3, it is characterized in that: two hydraulic steering cylinders (12,7) are the double-acting piston hydraulic actuating cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201308373U CN201158406Y (en) | 2007-12-10 | 2007-12-10 | Steering hydraulic system of bidirectional drive vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201308373U CN201158406Y (en) | 2007-12-10 | 2007-12-10 | Steering hydraulic system of bidirectional drive vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201158406Y true CN201158406Y (en) | 2008-12-03 |
Family
ID=40108999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201308373U Expired - Lifetime CN201158406Y (en) | 2007-12-10 | 2007-12-10 | Steering hydraulic system of bidirectional drive vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201158406Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444686A (en) * | 2010-10-11 | 2012-05-09 | 伊卡路斯(苏州)车辆系统有限公司 | Variable damping control and buffering system |
| CN102785694A (en) * | 2012-08-11 | 2012-11-21 | 山西强力矿用设备制造有限公司 | Hydraulic system for controlling vehicle to realize two-way travelling |
-
2007
- 2007-12-10 CN CNU2007201308373U patent/CN201158406Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444686A (en) * | 2010-10-11 | 2012-05-09 | 伊卡路斯(苏州)车辆系统有限公司 | Variable damping control and buffering system |
| CN102444686B (en) * | 2010-10-11 | 2013-10-09 | 伊卡路斯(苏州)车辆系统有限公司 | Variable damping control and buffering system |
| CN102785694A (en) * | 2012-08-11 | 2012-11-21 | 山西强力矿用设备制造有限公司 | Hydraulic system for controlling vehicle to realize two-way travelling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071210 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |