CN201371858Y - Articulated steering tractor - Google Patents
Articulated steering tractor Download PDFInfo
- Publication number
- CN201371858Y CN201371858Y CN200920088793U CN200920088793U CN201371858Y CN 201371858 Y CN201371858 Y CN 201371858Y CN 200920088793 U CN200920088793 U CN 200920088793U CN 200920088793 U CN200920088793 U CN 200920088793U CN 201371858 Y CN201371858 Y CN 201371858Y
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- CN
- China
- Prior art keywords
- hydraulic
- head
- constant flow
- pump
- duplex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an articulated steering tractor which comprises a head and a pulling carriage that is articulated with the head by a main beam. The head is provided with an engine, a hydraulic steering device is arranged between the head and the pulling carriage which is provided with a self-unloading hydraulic jack, the tractor also comprises a duplex constant flow pump, the output oil line of a constant flow overflow pump of the duplex constant flow pump is connected with a hydraulic power-assistant steering machine, and the output oil line of a gear pump of the duplex constant flow pump is connected with an oil line distributor of a hydraulic self-unloading system. By adopting the structure, the hydraulic steering device and the self-unloading device respectively form two separate hydraulic circulation systems which do not interfere with each other. Hydraulic oil is output quantitatively by the constant flow overflow pump, and the output is steady, thus reducing the pressure load of the hydraulic steering device, prolonging the service life of the hydraulic steering device, improving the safety of the tractor in driving and reducing traffic accidents.
Description
Technical field
The utility model relates to field of agricultural machinery, particularly a kind of trac., especially a kind of articulated steering formula trac..
Background technology
In more southern areas, generally using a kind of articulated steering formula trac., but this trac. is made up of head and the self-unloading traction railway carriage that is connected through the hinge, its steering hardware and self discharging system all are equipped with hydraulic efficiency gear, it provides power by a gear type pump to two cover hydraulic efficiency gear, its steering hardware is a direction of passage dish actuating hydro-steering machine, and by the oil circuit output of the gear type pump of hydro-steering machine control linkage on it, the action that drives the steering hydraulic jack is finished and turned to; Its self discharging system is finished by the hydraulic jack that same gear pump driven traction railway carriage bottom is provided with.Being provided with oil circuit output dispense switch in the delivery conduit of gear type pump exports to hydro-steering machine or hydraulic pressure self-unloading cylinder respectively with modulated pressure power.But the hydraulic power output valve of this gear type pump changes with the rotating speed height of driving engine, export very unstable, when the driving engine at high speed of trac. turns round, the pressure of gear type pump can be very big, its internal hydraulic pressure is too high to be very easy to cause hydro-steering machine or gear type pump self because of excessive damage of loading, can cause when serious to turn to malfunctioningly, even the great safety traffic accident of car crash occur.
The utility model content
The purpose of this utility model is the defective at prior art, provides a kind of steering operation convenient, driving safety, failure-free articulated steering formula trac..
The technical solution of the utility model is: a kind of articulated steering formula trac., comprise head and draw railway carriage by girder and head pivotally attached, head is provided with driving engine, between head and traction railway carriage, be provided with hydraguide, the traction railway carriage is provided with the hydraulic pressure self discharging system, also comprise a duplex constant flow pump, this duplex constant flow pump is by the constant current overflow type pump and gear type pump is coaxial connects to form, the constant current overflow type pump output circuit of this duplex constant flow pump is connected with hydraguide, and the gear type pump output circuit road of this duplex constant flow pump is connected with the hydraulic pressure self discharging system.
Described hydraguide comprises the wheel steering mechanism that is arranged on the head, this wheel steering mechanism is provided with the hydraulic power-assisted steering machine, this hydraulic power-assisted steering machine is connected on the traction railway carriage girder by the kinematic link mechanism driving, and the constant current overflow type pump output circuit of described duplex constant flow pump is connected on this hydraulic power-assisted steering machine.Adopt the hydraulic power-assisted steering machine, its inner mechanical mechanism controls that adopts turns to, the effect of Hydraulic Pump is just for reducing the moment of steering wheel rotation, alleviate driver fatigue, when hydraulic gear breaks down, can also realize emergency turn by the mechanical mechanism of hydraulic power-assisted steering machine, improve the safety that trac. travels, reduce the generation of safety traffic accident.
Also be provided with a change speed gear box on head, this change speed gear box is connected with engine-drive by power-transfer clutch, and described duplex hydraulic pressure constant flow pump cooperates with coaxial only the revolving of the output shaft of this change speed gear box.
Comprise hydraulic jack in described hydraulic pressure self discharging system, this hydraulic jack is by being arranged on the distributing box control in the oil circuit, and the output circuit of described gear type pump is connected on this distributing box.
Adopt said structure, hydraguide and self-unloading device have constituted two independently hydraulic systems respectively, do not disturb mutually therebetween, by the constant current overflow type pump hydraulic oil is quantitatively exported, its output is stable, can not reduce the pressure load of hydraguide with the rotation speed change of driving engine, avoid the damage of hydraguide, prolong the service life of hydraguide.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the connection diagram of hydraulic gear in the utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, articulated steering formula trac. of the present utility model comprises head 101 and traction railway carriage 201, traction railway carriage 201 is hinged with head 101 by the hinge 11 that its base girder end is provided with, this traction railway carriage 201 is provided with self-unloading jack 17, and head 101 is provided with driving engine 20.Also be provided with a change speed gear box 18 at the rear portion of head 101, this change speed gear box 18 is in transmission connection by power-transfer clutch and driving engine 20.On change speed gear box 18, be equipped with a duplex constant flow pump 1 ', this duplex constant flow pump 1 ' by the constant current overflow type pump and gear type pump is coaxial connects to form, the constant current overflow type pump output circuit of this duplex constant flow pump is connected with hydraguide, and the gear type pump output circuit of this duplex constant flow pump is connected with the hydraulic pressure self discharging system.
The hydraulic pressure self discharging system comprises hydraulic jack 17, and this hydraulic jack 17 is by being arranged on distributing box 15 controls in the oil circuit, and the output circuit of described gear type pump is connected on this distributing box 15.Hydraulic steering mechanism comprises the wheel steering mechanism 7 that is arranged on the head 101, and this wheel steering mechanism 7 is provided with hydraulic power-assisted steering machine 8, duplex constant flow pump 1 ' constant current overflow type pump output circuit be connected on this hydraulic power-assisted steering machine 8.This hydraulic power-assisted steering machine 8 is in transmission connection with the girder of traction railway carriage 201 by kinematic link mechanism, this kinematic link mechanism comprises that transmission is installed in the transmission arm of force 9 on the hydraulic power-assisted steering machine 8, be hinged with a connecting rod 13 on this transmission arm of force 9, the other end of this connecting rod 13 is hinged with an interlock galianconism 12, and this interlock galianconism 12 is fixed on the traction railway carriage base girder.
Actuating trac. bearing circle 7 when turning to, duplex constant flow pump 1 ' push away or spur the transmission arm of force 9 by hydraulic power-assisted steering machine 8, the transmission arm of force 9 is given interlock galianconism 12 on the traction railway carriage girder by connecting rod 13 with transmission of power, by head 101 with draw hinge 11 between the railway carriage 201 and order about trac. and finish and turn to.This hydraulic power-assisted steering machine 8 is half hydraguide, when hydraulic gear breaks down, can carry out emergency turn by the mechanical mechanism on the hydraulic power-assisted steering machine 8, in case spline is to malfunctioning.
Claims (4)
1, a kind of articulated steering formula trac., comprise head and draw railway carriage by girder and head pivotally attached, head is provided with driving engine, between head and traction railway carriage, be provided with hydraguide, the traction railway carriage is provided with the hydraulic pressure self discharging system, it is characterized in that, also comprise a duplex constant flow pump, this duplex constant flow pump is by the constant current overflow type pump and gear type pump is coaxial connects to form, the constant current overflow type pump output circuit of this duplex constant flow pump is connected with hydraguide, and the gear type pump output circuit of this duplex constant flow pump is connected with the hydraulic pressure self discharging system.
2, articulated steering formula trac. according to claim 1, it is characterized in that, described hydraguide comprises the wheel steering mechanism that is arranged on the head, this wheel steering mechanism is provided with the hydraulic power-assisted steering machine, this hydraulic power-assisted steering machine is connected on the traction railway carriage girder by the kinematic link mechanism driving, and the constant current overflow type pump output circuit of described duplex constant flow pump is connected on this hydraulic power-assisted steering machine.
3, articulated steering formula trac. according to claim 2, it is characterized in that, also be provided with a change speed gear box on head, this change speed gear box is connected with engine-drive by power-transfer clutch, and described duplex hydraulic pressure constant flow pump is connected with the output shaft crankshaft drive of this change speed gear box.
4, articulated steering formula trac. according to claim 1, it is characterized in that, comprise hydraulic jack in described hydraulic pressure self discharging system, this hydraulic jack is by being arranged on the distributing box control in the oil circuit, and the output circuit of described gear type pump is connected on this distributing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920088793U CN201371858Y (en) | 2009-03-04 | 2009-03-04 | Articulated steering tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920088793U CN201371858Y (en) | 2009-03-04 | 2009-03-04 | Articulated steering tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371858Y true CN201371858Y (en) | 2009-12-30 |
Family
ID=41497940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920088793U Expired - Fee Related CN201371858Y (en) | 2009-03-04 | 2009-03-04 | Articulated steering tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201371858Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167797A (en) * | 2010-10-11 | 2013-06-19 | 大虎株式会社 | Tractor |
| CN104802850A (en) * | 2015-04-30 | 2015-07-29 | 邓爱娜 | Walking tractor with hydraulic steering wheel and self-discharging function |
-
2009
- 2009-03-04 CN CN200920088793U patent/CN201371858Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167797A (en) * | 2010-10-11 | 2013-06-19 | 大虎株式会社 | Tractor |
| CN103167797B (en) * | 2010-10-11 | 2016-05-04 | 大虎株式会社 | Tractor |
| CN104802850A (en) * | 2015-04-30 | 2015-07-29 | 邓爱娜 | Walking tractor with hydraulic steering wheel and self-discharging function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20110304 |