CN2548841Y - Special bidirectional operating device of engineering vehicles - Google Patents
Special bidirectional operating device of engineering vehicles Download PDFInfo
- Publication number
- CN2548841Y CN2548841Y CN 02271384 CN02271384U CN2548841Y CN 2548841 Y CN2548841 Y CN 2548841Y CN 02271384 CN02271384 CN 02271384 CN 02271384 U CN02271384 U CN 02271384U CN 2548841 Y CN2548841 Y CN 2548841Y
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- China
- Prior art keywords
- valve
- hydraulic
- walking
- oil pump
- utility
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- Expired - Fee Related
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Abstract
The utility model is a special construction vehicle bidirectional manipulation walking device, composed of a hydraulic motion drive, a control gear and a hydraulic steering system. A brake valve is arranged between the pipe located between the oil pump and the reversing valve and the hydraulic circuit of the scavenge box; the oil inlet and outlet circuit of the walking hydraulic motor is connected with a clutch valve; the front steering gear is in parallel connection with a back steering gear fixedly connected with the back steering wheel and is also connected with the oil pump and the steering cylinder via a pipeline. The vehicle, provided with the utility model, can be steered and driven either heading forward or backward without needing the driver to adjust the seat (change the riding direction) so that the operation efficiency is improved. The utility model has the advantages of simple structure, low cost and good serviceability.
Description
(1) technical field
The utility model relates to technical field of engineering machinery, specifically is meant a kind of special engineering vehicle both-way operation running gear.
(2) background technology
When general vehicle travels (for example automobile), no matter advance or fall back, the driver need only be sitting in the direction operation of face forward.But exception is then arranged for some special engineering vehicle, backhoe loader for example, its excavating gear hangs the behind that is installed in machine, when vehicle is run at high speed on highway like this, equipment just can not influence driver's the visual field, when carrying out digging operation, the driver just turns round changes 180 ° with seat, is sitting in towards the direction at rear and carries out Job Operations.In operation process, when needs mobile apparatus position, the driver just must turn round, and the face forward operation of walking treats that machine is movably walking behind the desired location, and the driver goes back to the rear again and carries out the digging operation operation.Because the driver will turn seat change seat direction repeatedly in the operation process, has influenced operating efficiency, especially for resembling the mode of operation that carries out the such operation while walking of ground fragmentation, operation is just more difficult.Require to carry out operation when travelling under a lot of situations, walking one segment distance is handled walking if at this moment turn round behind the weight of for example slinging, and must influence operation and maybe can't realize this operation function.Can make processing ease towards rear operation walking, be convenient to observe and be provided with machine location, the face forward operation then needs to turn over head and is seeing the back, handles relatively and wants the many of difficulty.
For the such engineering truck of suspension type excavating machine, general hope can be handled walking at both direction, in other words, when the driver carries out Job Operations towards the rear, need not turn round the walking of also can operating machine, and can simplify the operation like this, improves transaction capabilities.But this its operating control of class vehicle also is confined to satisfy the driver and is sitting in towards the operation of walking of the direction of vehicle front at present, and fails to satisfy the manipulation of also can walking when the driver is sitting in towards the rear.Why like this, be that its clutch control, brake operating and steering operation are difficult to be arranged in simultaneously driver's front and back when adopting the mechanical drive form because of machine.Some adopts hydraulicdriven machine, mostly is the glide steering form, also is difficult to joystick is arranged in former and later two places.
(3) summary of the invention
The purpose of this utility model is exactly the defective that exists in the above-mentioned prior art in order to solve, and a kind of special engineering vehicle both-way operation running gear is provided.This device can some need former and later two directions all walk the operation engineering truck on, realize that former and later two directions all have the walking operating function.
Special engineering vehicle both-way operation running gear described in the utility model, form by hydraulic moving driving and steering unit and hydraulic steering mechanism, wherein, hydraulic moving drives with steering unit and is interconnected and formed by fuel tank, filter, Hydraulic Pump, safety valve, change-over valve, governor valve, check valve, walking HM Hydraulic Motor, overload Fill valve; Hydraulic steering mechanism by preceding bearing circle, preceding deflector, turn to oil cylinder, safety valve, oil pump, filter to interconnect to form, it is characterized in that, between the hydraulic circuit of pipeline between oil pump and the change-over valve and oil sump tank, brake activation valve is installed, on the inlet and outlet of fuel channel of walking HM Hydraulic Motor, be connected with the power-transfer clutch valve, the back deflector of bearing circle after preceding deflector place is parallel with captive joint, and by pipeline simultaneously with oil pump with turn to oil cylinder to be connected.
The utility model compared with prior art has following advantage and beneficial effect:
1. vehicle of the present utility model is installed, both can have been handled and travel, can handle towards the car rear again and travel towards car the place ahead.Backhoe loader for example, when running at high speed on highway, the driver is sitting in to handle towards car the place ahead to travel, because the excacation device is positioned at the behind of machine, so guaranteed the driver unobstructed sight is arranged.And when digging operation, because equipment is positioned at the machine back, the driver operates towards the rear, when needs short range mobile operating position, the driver can turn the seat and just can handle and travel, that is to say, " digging operation operation " and " operation of machine shifting walk " repeatedly alternately in, the driver can turn seat (change seat direction), thereby has improved operating efficiency.
2. the utility model is simple in structure, and cost is low, good operation performance.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the hydraulic efficiency pressure system scheme drawing of backhoe loader;
Fig. 3 is running condition figure of the present utility model (one);
Fig. 4 is running condition figure of the present utility model (two).
(5) specific embodiment
As shown in Figure 1, the utility model is interconnected by hydraulic moving driving and steering unit and hydraulic steering mechanism to be formed, wherein, in hydraulic moving driving and steering unit, filter 2 is taken in the import of oil pump 3, and by pipeline insertion fuel tank 1, oil pump 3 outlets are connected by the oil inlet of pipeline with change-over valve 6, the import of safety valve 4 and brake activation valve 5 is connected with pipeline between oil pump 3 and the change-over valve 6, outlet is connected on the hydraulic circuit of oil sump tank, the oil circuit of change-over valve 6 is connected with walking HM Hydraulic Motor 12, is connected with governor valve 7 and 10 on the inlet and outlet of fuel channel of walking HM Hydraulic Motor 12, check valve 8 and 9, power-transfer clutch valve 11, overload Fill valve 13 and 14; In hydraulic steering mechanism, filter 22 is taken in the import of oil pump 21, and by pipeline insertion fuel tank 1, oil pump 21 outlets have safety valve 20 to be connected with oil return line, oil pump 21 outlet by pipeline simultaneously with preceding deflector 16, back deflector 19 and connect, preceding deflector 16, back deflector 19 are connected with turning to oil cylinder 18 again simultaneously, and preceding bearing circle 15 is captiveed joint with preceding deflector 16, back deflector 19 respectively with back bearing circle 17.
When driver's seat during towards the place ahead of car, walking (advance or retreat) method of operating is: open change-over valve 6, the pressure oil that oil pump 3 provides enters HM Hydraulic Motor 12, and opens governor valve 7 or 10 simultaneously, makes the loop conducting, the drive wheels walking; During gear shift, step on power-transfer clutch valve 11, the inlet and outlet of fuel channel conducting of motor 12, motor freely rotates, and this moment can engage a gear.
When driver's seat during towards the rear of car, walking (advance or retreat) method of operating is: open change-over valve 6, the pressure oil that oil pump 3 provides enters HM Hydraulic Motor 12, and opens governor valve 7 or 10 simultaneously, makes the loop conducting, the drive wheels walking; Because the speed towards the rear operational drive of car is very low, so be during gear shift with the car gear shift of stopping; Braking during walking is, steps on brake activation valve 5, and with the outlet and the oil return line conducting of oil pump 3, governor valve 7 or 10 is not because of there being control presssure to cut out, and motor 12 is braked; Turning to of walking is that bearing circle 17 and back deflector 19 after the manipulation promote to turn to oil cylinder 18 to stretch and the driving steering swivel.
As shown in Figure 2, the hydraulic efficiency pressure system of backhoe loader of the present utility model is installed, mainly is connected with the digging operation steering unit, the digging operation steering unit is formed with power element 25 by excavating to handle with power element group 24 and supporting leg manipulation.
As shown in Figure 3, when normally running at high speed, the driver is sitting in towards the manipulation of car the place ahead and travels.During start the engine, open switch valve 23 earlier, the zero load startup of driving engine.Behind the engine starting, off switch valve 23, bearing circle 15, preceding deflector 16 turn to before can using this moment.During gear shift, open power-transfer clutch valve 11, carry out gear-change operation then.
As shown in Figure 4, when digging operation, the driver operates towards the rear, and when needs short range mobile operating position, the driver can turn the seat and just can handle and travel, and opens change-over valve 6 to position, a left side or right position, and control is advanced or fallen back; Use back bearing circle 17, back deflector 19 to handle and turn to; Brake activation valve 5 can be braked, and handles 6 times metas of change-over valve, can the short time stopping brake." digging operation operation " and " operation of machine shifting walk " repeatedly alternately in, the driver can turn seat (change seat direction), thereby has improved operating efficiency.
Claims (1)
1. special engineering vehicle both-way operation running gear, form by hydraulic moving driving and steering unit and hydraulic steering mechanism, wherein, hydraulic moving drives with steering unit and is interconnected and formed by fuel tank, filter, Hydraulic Pump, safety valve, change-over valve, governor valve, check valve, walking HM Hydraulic Motor, overload Fill valve; Hydraulic steering mechanism by preceding bearing circle, preceding deflector, turn to oil cylinder, safety valve, oil pump, filter to interconnect to form, it is characterized in that, between the hydraulic circuit of pipeline between oil pump and the change-over valve and oil sump tank, brake activation valve is installed, on the inlet and outlet of fuel channel of walking HM Hydraulic Motor, be connected with the power-transfer clutch valve, the back deflector of bearing circle after preceding deflector place is parallel with captive joint, and by pipeline simultaneously with oil pump with turn to oil cylinder to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02271384 CN2548841Y (en) | 2002-06-28 | 2002-06-28 | Special bidirectional operating device of engineering vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02271384 CN2548841Y (en) | 2002-06-28 | 2002-06-28 | Special bidirectional operating device of engineering vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548841Y true CN2548841Y (en) | 2003-05-07 |
Family
ID=33736256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02271384 Expired - Fee Related CN2548841Y (en) | 2002-06-28 | 2002-06-28 | Special bidirectional operating device of engineering vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2548841Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100497028C (en) * | 2007-12-10 | 2009-06-10 | 常州科研试制中心有限公司 | Bidirectional steering vehicle transmission system |
| CN104627160A (en) * | 2015-02-13 | 2015-05-20 | 湖南五新重型装备有限公司 | Hydraulic walking control system for engineering vehicle |
-
2002
- 2002-06-28 CN CN 02271384 patent/CN2548841Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100497028C (en) * | 2007-12-10 | 2009-06-10 | 常州科研试制中心有限公司 | Bidirectional steering vehicle transmission system |
| CN104627160A (en) * | 2015-02-13 | 2015-05-20 | 湖南五新重型装备有限公司 | Hydraulic walking control system for engineering vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |