CN102649448B - Hydraulic steering wheel planetary steering crawler tractor - Google Patents
Hydraulic steering wheel planetary steering crawler tractor Download PDFInfo
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Abstract
The invention discloses a hydraulic steering wheel planetary steering crawler tractor, which is characterized by being provided with a hydraulic steering wheel steering brake control device (1), a planetary steering mechanism steering linkage device (2), a right connecting rod assembly (3) and a left connecting rod assembly (4), wherein the planetary steering mechanism steering linkage device (2) comprises a left planetary steering mechanism (2A), a left planetary steering mechanism brake (2B), a left half axle brake (2C), a right planetary steering mechanism (2D), a right planetary steering mechanism brake (2E), a right half axle brake (2F), a central transmission bevel gear wheel (2G), a planetary steering mechanism large gear ring (2H) and a rear axle housing (2K), and the hydraulic steering wheel steering brake control device (1) is connected with the right half axle brake (2F) through the right connecting rod assembly (3) and is connected with the left half axle brake (2C) through the left connecting rod assembly (4). The tractor disclosed by the invention has the advantages of easiness in operation, long service life and high work efficiency.
Description
Technical field
The present invention relates to realize with steering planetary the crawler running machinery turning to, all-hydraulic bearing circle planet turns to crawler-tread tractor specifically.
Background technology
The existing crawler-tread tractor turning to of realizing with steering planetary, the crawler running machineries such as bulldozer, all be provided with a left side in chaufeur front, right steering planetary brake service bar and a left side, right axle shaft brake pedal, while turning to, chaufeur should be removed left or right steering planetary brake service bar by hand, pin is stepped on left or right Semi-axle brake device pedal again, when needing braking in driving or slowing down, chaufeur must be stepped on a left side simultaneously, right axle shaft brake pedal, and the running on wheels machineries such as existing wheel-tire tractor, while turning to, only need steering wheel rotation, when service brake or deceleration, only need step on next brake pedal.Two kinds of steering operation modes contrast, and existing crawler running machinery steering operation mode exists following shortcoming: 1. due to the difference on operating habit, chaufeur need to pass through special training, 2. while turning to, chaufeur will be used both hands and feet, and certainly will disperse the energy of chaufeur, easily causes fatigue, and work efficiency and safety also can reduce, 3. require chaufeur to have higher driving quality, while turning to, require chaufeur formerly to separate in steering planetary drg cut-out power situation and implement again the braking of Semi-axle brake device, move left or right steering planetary brake service bar, in the time that steering planetary drg thoroughly separates, can step on left or right Semi-axle brake device pedal, or while needing straight-line travelling, require chaufeur first to unclamp left or right Semi-axle brake device pedal, after complete brake off, can engage left or right steering planetary brake service bar and engage power, but, in fact be difficult to accomplish that trick coordinates precisely, put in place, therefore not cutting off power enforcement braking causes the wearing and tearing of Semi-axle brake device to increase the weight of, 4. when service brake, chaufeur must be stepped on left and right half brake pedal simultaneously, operation effort.
The patent No. is 200510009784.5, in the Chinese patent that patent name is " a kind of maneuver control device of tracklaying vehicle ", a kind of hydraulic gear that is applicable to double-current transmission is disclosed, comprise a panel block and the equalizing gear change speed gear box that can oppositely export with the both sides of hydraulic continuously variable transmission adapted, control box is by bearing circle control knuckle section, by stepless change bar by control box control speed change, commutation part; Control box knuckle section comprises control panel, bouquet, the outer sliding sleeve rail on the pair of engaged gears that is positioned under bearing circle adapter shaft, main shaft, half universal-joint being connected with main shaft, universal joint cross-head and drives the slide-bar that turns to of flexible axle action; Speed change, commutation part are to drive flexible axle by stepless change bar, by rocking arm drive shaft; Fixing driver plate, control panel, sliding ball, inner sliding sleeve rail in rotating shaft.The prior art is turning to for double power flow tracked vehicle, adopt a set of very complicated special wheel steering mechanism, and the Full hydraulic steering gear that adopts wheel-tire tractor generally to adopt in the present invention, this Hydraulic Elements consumption is large, cost is low, steady quality, safe and reliable, maintenance, change convenient and swift, easily buying, volume is little, easily arrange, realize with wheeled car operating habit unified, maximum advantage is, in the time that hydraulic efficiency pressure system is malfunctioning, can realize the service brake of bearing circle manpower, there is two-way safeguarding function, prior art does not possess These characteristics.
Dongbei Agricultural College's journal, in June, 1992, the 23rd the 2nd phase of volume, a kind of physical construction is disclosed in " analysis of crawler-tread tractor steering planetary " literary composition: the large cone gear of the internally toothed annulus of planetary mechanism and central transmission is consolidated into one, sun wheel and steering brake drum join together, in the outer rim of steering brake drum, there is normal action type brake collar, the large cone gear of satellite gear and central transmission, sun wheel engagement, power is spread out of by planetary carrier, planetary carrier with the same rotating speed of axle is housed on this side semiaxis, the driving gear of stopping brake drum and final transmission, in the outer rim of stopping brake drum, there is the stopping brake band of non-frequent effect, driving gear drives ring gear and drive wheel.The structure of the left and right sides is identical, and shares an internally toothed annulus.The shortcoming of technique scheme is to require high to manipulation technical ability, in the time that trac. need to turn to a certain side, correct method of operation should be: first pull the braking in a turn band control operating rod of this side, as need turn sharp turn, can be after control operating rod be moved the end to, step on the stretcher of brake collar, as first stepped on the stretcher of brake collar, because semiaxis power does not cut off, rotating speed is higher, must increase the wearing and tearing of brake collar, brake wheel will produce rotation simultaneously, also can accelerate the wearing and tearing of brake collar.Turning to after end, should first stretcher be lifted completely, then put back to control operating rod, as carried out conversely, is all disadvantageous to two brake collars.
Summary of the invention
Technical matters to be solved by this invention be overcome deficiency of the prior art and provide that a kind of operating mode is simple, long service life, work efficiency is high, safety is good all-hydraulic bearing circle planet turn to crawler-tread tractor.
The technical scheme that the present invention solves the problems of the technologies described above employing is: this all-hydraulic bearing circle planet turns to crawler-tread tractor, comprises driving engine (5), power-transfer clutch (6), change speed gear box (7), back axle (8), final driving device (9), vehicle frame (10), Running System (11) and operator's compartment (12), is characterized in that: be also provided with all-hydraulic wheel steering braking force control system (1), steering planetary steering link (2), right connecting rod assembly (3) and left connecting rod assembly (4), described all-hydraulic wheel steering braking force control system (1) comprises braking in a turn valve (1A), braking in a turn oil cylinder group (1B), power steerig pump (1C), Full hydraulic steering gear (1D), brake pedal (1E), equipment oil pump (1F), bearing circle (1G), pressure-gradient control valve (1H) and fuel tank (1K), described steering planetary steering link (2) comprises left steering planetary (2A), left steering planetary drg (2B), left half axle drg (2C), right steering planetary (2D), right steering planetary drg (2E), right axle shaft drg (2F), central transmission bevel gear wheel (2G), steering planetary bull gear (2H), rear-axle casing (2K), braking in a turn oil cylinder group (1B) comprises left steering brake cylinder (1B2) and right steering brake cylinder (1B1), right steering brake cylinder (1B1) is connected by right connecting rod assembly (3) and the right braking platen alive (2F1) in right axle shaft drg (2F), and left steering brake cylinder (1B2) is connected by left connecting rod assembly (4) and the left braking platen alive (2C1) in left half axle drg (2C).The present invention adopts all-hydraulic wheel steering braking force control system, steering planetary steering link, left and right connecting rod assembly, while guaranteeing tractor steering, chaufeur first separates steering planetary drg and implements the braking of Semi-axle brake device again, when craspedodrome, first unclamp the logic interlock order that Semi-axle brake device is rejoined steering planetary drg, for the complete unity that realizes the running on wheels mechanical steering operating mode such as crawler running machinery steering operation mode and wheel-tire tractor is given security.
Braking in a turn valve of the present invention (1A) comprises right brake activation valve (1A1), left brake activation valve (1A2), right steering valve (1A3), left steering valve (1A4), shuttle valve (1A5) and safety valve (1A6), braking in a turn oil cylinder group (1B) comprises right steering brake cylinder (1B1) and left steering brake cylinder (1B2), described fuel tank (1K) is connected with power steerig pump (1C), power steerig pump (1C) is connected with the oil inlet of pressure-gradient control valve (1H), the hydraulic fluid port CF of pressure-gradient control valve (1H) is connected with hydraulic fluid port P on Full hydraulic steering gear (1D) and the hydraulic fluid port P of braking in a turn valve (1A) respectively, the hydraulic fluid port EF of pressure-gradient control valve (1H) is connected with equipment oil pump (1F), bearing circle and Full hydraulic steering gear (1D) interlock, hydraulic fluid port A on Full hydraulic steering gear (1D) is connected with the left steering valve (1A4) in braking in a turn valve (1A), left steering valve (1A4) is connected with left brake activation valve (1A2), left brake activation valve (1A2) is connected with the left steering brake cylinder (1B2) in braking in a turn oil cylinder group (1B), hydraulic fluid port B on Full hydraulic steering gear (1D) is connected with the right steering valve (1A3) in braking in a turn valve (1A), right steering valve (1A3) is connected with right brake activation valve (1A1), right brake activation valve (1A1) is connected with the right steering brake cylinder (1B1) in braking in a turn oil cylinder group (1B), hydraulic fluid port P on Full hydraulic steering gear (1D) is connected with the hydraulic fluid port P of braking in a turn valve (1A), the hydraulic fluid port P of braking in a turn valve (1A) is connected with shuttle valve (1A5) and safety valve (1A6) respectively, shuttle valve (1A5) is connected with left steering brake cylinder (1B2) and right steering brake cylinder (1B1) respectively with right brake activation valve (1A1) by left brake activation valve (1A2), hydraulic fluid port T on Full hydraulic steering gear (1D) is connected with fuel tank, brake pedal (1E) and right brake activation valve (1A1) and left brake activation valve (1A2) interlock.This all-hydraulic wheel steering braking is controlled and make only to need steering wheel rotation in the time being turned to, and when service brake or deceleration, only need step on next brake pedal, greatly facilitates the operation of chaufeur.In addition said structure, in the time that power steerig pump breaks down, can be realized bearing circle manual steering and service brake, realizes double insurance, has greatly improved safety.
Left steering planetary of the present invention (2A), left steering planetary drg (2B), left half axle drg (2C) are arranged in rear-axle casing (2K) with right steering planetary (2D), right steering planetary drg (2E), right axle shaft drg (2F) symmetry, and described left steering planetary (2A) shares a steering planetary bull gear (2H) with right steering planetary (2D).
Left steering planetary drg of the present invention (2B) comprises left lateral star drg driving disc spacing pressing (2B1), left lateral star brake friction dish (2B2), left lateral star arrester shell (2B3), left platen (2B4), left belleville spring (2B5), left spring stay bearing plate (2B6) and parts on the left side from lever connection (2B7);
Described left half axle drg (2C) comprises initiatively hub (2C3), left half axle brake friction dish (2C4), left thrust baring (2C5), left braking platen alive (2C6), left braking slow-witted platen (2C7), left support steel ball (2C8) and left nut (2C9) of left half axle drg platen (2C1), left half axle drg driving disc spacing pressing (2C2), left half axle drg;
The splined hole of left lateral star drg driving disc spacing pressing (2B1) is connected with left sun wheel (2A5) the left part castellated shaft in left steering planetary (2A), left lateral star brake friction dish (2B2) male splines is connected with left lateral star arrester shell (2B3) internal splined hole, left lateral star arrester shell (2B3) and left spring stay bearing plate (2B6), rear-axle casing (2K) links into an integrated entity with screw, the splined hole of left half axle drg driving disc spacing pressing (2C2) is connected with left half axle drg active hub (2C3) castellated shaft, left half axle drg initiatively hub (2C3) splined hole is connected with left half axle (2A6) castellated shaft in left steering planetary (2A), part on the left side from lever connection (2B7) right-hand member and be connected by screw thread with left platen (2B4), part on the left side from lever connection (2B7) left end outside thread and be connected by screw thread with left nut (2C9), part on the left side from lever connection (2B7) the middle part cylinder circular hole free-running fit corresponding with left half axle drg platen (2C1) and can slide axially, left braking platen alive (2C6), left braking is stayed platen (2C7) empty set on the axle journal of left lateral star arrester shell (2B3) left part, left braking platen alive (2C6) can rotate relative to left lateral star arrester shell (2B3) left part axle journal,
Right steering planetary drg (2E), right axle shaft drg (2F) are symmetrical arranged with reference to left steering planetary drg (2B), left half axle drg (2C) respectively.
Right connecting rod assembly of the present invention (3) comprises upper right rocking arm (3A), bottom right rocking arm (3B), right connecting rod (3C), described left connecting rod assembly (4) comprises upper left rocking arm (4A), lower-left rocking arm (4B), left connecting rod (4C), upper right rocking arm (3A) one end is connected with right steering brake cylinder (1B1) piston rod, the other end is connected with the one end of bottom right rocking arm (3B), the other end of bottom right rocking arm (3B) is connected with one end of right connecting rod (3C), and the other end of right connecting rod (3C) is connected with right braking platen alive (2F1); Upper left rocking arm (4A) one end is connected with left steering brake cylinder (1B2) piston rod, the other end is connected with the one end of lower-left rocking arm (4B), the other end of lower-left rocking arm (4B) is connected with one end of left connecting rod (4C), and the other end of left connecting rod (4C) is connected with left braking platen alive (2F1).The present invention connects all-hydraulic wheel steering braking force control system and steering planetary steering link by left and right connecting rod assembly, and left and right connecting rod assembly itself is simple in structure, transmission is accurate.
The present invention compared with prior art has the following advantages: realized the unification of wheel-tire tractor and crawler-tread tractor steering mode 1., two long steering track rods are cancelled, two of left and right brake pedal is reduced to single brake pedal, greatly improve turning to of chaufeur, service brake manipulation traveling comfort, safety and work efficiency, and the crawler-tread tractor chaufeur that is through with must manipulate the history of training for many years specially, greatly alleviate the crawler-tread tractor chaufeur contradiction that wheel drags high salary difficulty to ask relatively, in rural area, skilled wheel drags chaufeur a lot, but recruiting a skilled crawler-tread tractor chaufeur is but a very difficult thing, 2. Dual-pump flow-converging pressure-gradient control valve energy-saving hydraulic system has improved complete machine work efficiency and fuel economy greatly, in the time that complete machine need to turn to, first pressure-gradient control valve can guarantee to turn to little oil pump to steering swivel system fuel feeding, in the time not needing to turn to, turn to the fuel feeding junction of little oil pump to flow to work oil pump, and traditional crawler-tread tractor turns to the unnecessary flow of little oil pump to flow back in vain fuel tank, Dual-pump flow-converging pressure-gradient control valve energy-saving hydraulic system not only can make full use of the hydraulic energy that turns to little oil pump, and can reduce the requirement of working oil capacity of pump in the time of work oil pump design selection, play dual energy-conservation effect, 3. adopt the Full hydraulic steering gear that generally adopts of wheel-tire tractor improved complete machine q&r, reduced complete machine cost, this Hydraulic Elements consumption is large, cost is low, steady quality, safe and reliable, keep in repair, change convenient and swift, easily buying, volume is little, easily arrange, realize with wheeled car operating habit unified, maximum advantage is, can realize the driving of bearing circle manpower and turn to and brake in the time that hydraulic efficiency pressure system is malfunctioning, has safe two-way safeguarding function.And on the agricultural crawler-tread tractor turning at traditional steering planetary at present, owing to pulling steering track rod and requiring great effort very much while stepping on brake pedal, often adopt dedicated hydraulic power steering valve to reduce steering track rod operating effort, but hydraulic power-assisted steering valve is owing to carrying out and dragging volume of production and marketing to decline year by year in recent years, entirety consumption constantly reduces, original equipment manufacturer does not improve enthusiasm, price is high but of poor quality, often cause potential safety hazard, and bulky, heavy bad layout, in addition, on the agricultural crawler-tread tractor turning at traditional steering planetary at present, two the Semi-axle brake device pedals in operation left and right are still by manpower, therefore this patent has apparent advantage and promotional value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the all-hydraulic wheel steering braking force control system of the present invention schematic diagram.
Fig. 3 is steering planetary steering link section-drawing of the present invention.
Fig. 4 is C-C section-drawing in Fig. 3.
Fig. 5 is D-D section-drawing in Fig. 3.
The specific embodiment
Referring to Fig. 1 ~ Fig. 5, the present invention includes all-hydraulic wheel steering braking force control system 1, steering planetary steering link 2, right connecting rod assembly 3, left connecting rod assembly 4, driving engine 5, power-transfer clutch 6, change speed gear box 7, back axle 8, final driving device 9, vehicle frame 10, Running System 11 and operator's compartment 12.The each parts annexation of the present invention: driving engine 5, power-transfer clutch 6, change speed gear box 7, back axle 8, final driving device 9 is connected on vehicle frame 10, driving engine 5 power are through power-transfer clutch 6, change speed gear box 7, back axle 8, final driving device 9 is passed to Running System 11, the support zone of Running System 11 is connected with vehicle frame 10, the movable parts of Running System 11 is connected with final driving device 9, operator's compartment 12 is connected on vehicle frame 10, steering planetary steering link 2, right connecting rod assembly 3, left connecting rod assembly 4 is all connected on back axle 8, all-hydraulic wheel steering braking force control system 1 is connected on operator's compartment 12, and by right connecting rod assembly 3, left connecting rod assembly 4 is connected with star steering hardware steering link 2.
Described all-hydraulic wheel steering braking force control system 1 comprises braking in a turn valve 1A, braking in a turn oil cylinder group 1B, power steerig pump 1C, Full hydraulic steering gear 1D, brake pedal 1E, equipment oil pump 1F, bearing circle 1G, pressure-gradient control valve 1H and fuel tank 1K.
Described steering planetary steering link 2 comprises left steering planetary 2A, left steering planetary drg 2B, left half axle drg 2C, right steering planetary 2D, right steering planetary drg 2E, right axle shaft drg 2F, central transmission bevel gear wheel 2G, steering planetary bull gear 2H, rear-axle casing 2K.
Described right connecting rod assembly 3 comprises upper right rocking arm 3A, bottom right rocking arm 3B, right connecting rod 3C.Described left connecting rod assembly 4 comprises upper left Rocker arm 4 A, lower-left Rocker arm 4 B, left connecting rod 4C.
Described braking in a turn valve 1A comprises right brake activation valve 1A1, left brake activation valve 1A2, right steering valve 1A3, left steering valve 1A4, shuttle valve 1A5 and safety valve 1A6, braking in a turn oil cylinder group 1B comprises right steering brake cylinder 1B1 and left steering brake cylinder 1B2, described fuel tank 1K is connected with power steerig pump 1C, power steerig pump 1C is connected with the oil inlet of pressure-gradient control valve 1H, the hydraulic fluid port CF of pressure-gradient control valve 1H is connected with hydraulic fluid port P on Full hydraulic steering gear 1D and the hydraulic fluid port P of braking in a turn valve 1A respectively, the hydraulic fluid port EF of pressure-gradient control valve 1H is connected with equipment oil pump 1F, bearing circle and Full hydraulic steering gear 1D interlock, hydraulic fluid port A on Full hydraulic steering gear 1D is connected with the left steering valve 1A4 in braking in a turn valve 1A, left steering valve 1A4 is connected with left brake activation valve 1A2, left brake activation valve 1A2 is connected with the left steering brake cylinder 1B2 in braking in a turn oil cylinder group 1B, hydraulic fluid port B on Full hydraulic steering gear 1D is connected with the right steering valve 1A3 in braking in a turn valve 1A, right steering valve 1A3 is connected with right brake activation valve 1A1, right brake activation valve 1A1 is connected with the right steering brake cylinder 1B1 in braking in a turn oil cylinder group 1B, hydraulic fluid port P on Full hydraulic steering gear 1D is connected with the hydraulic fluid port P of braking in a turn valve 1A, the hydraulic fluid port P of braking in a turn valve 1A is connected with shuttle valve 1A5 and safety valve 1A6 respectively, shuttle valve 1A5 is connected with left steering brake cylinder 1B2 and right steering brake cylinder 1B1 respectively with right brake activation valve 1A1 by left brake activation valve 1A2, hydraulic fluid port T on Full hydraulic steering gear 1D is connected with fuel tank, brake pedal 1E is hinged with the spool of right brake activation valve 1A1 and left brake activation valve 1A2 respectively.
Described left steering planetary 2A, left steering planetary drg 2B, left half axle drg 2C and right steering planetary 2D, right steering planetary drg 2E, right axle shaft drg 2F one by one symmetry are arranged in rear-axle casing 2K, and described left steering planetary 2A and right steering planetary 2D share a steering planetary bull gear 2H.Left and right sides structure full symmetric, therefore only describes left side structure, and right side reference left side is symmetrical arranged.
Described left steering planetary 2A comprises that left large bearing 2A1, left planetary wheel 2A2, left compensating-gear shaft 2A3, left pinion carrier 2A4, left sun wheel 2A5, left half axle 2A6, left support seat 2A7, left-small-axis hold 2A8.
Described left steering planetary drg 2B comprises left lateral star drg driving disc spacing pressing 2B1, left lateral star brake friction dish 2B2, left lateral star arrester shell 2B3, left platen 2B4, left belleville spring 2B5, left spring stay bearing plate 2B6, parts on the left side from lever connection 2B7.Left steering planetary drg 2B is the tight drg of normal pressure, compresses by left belleville spring 2B5.
Described left half axle drg 2C comprises initiatively hub 2C3, left half axle brake friction dish 2C4, left thrust baring 2C5, left braking platen 2C6 alive, left braking slow-witted platen 2C7, left support steel ball 2C8, left nut 2C9 of left half axle drg platen 2C1, left half axle drg driving disc spacing pressing 2C2, left half axle drg.Left half axle drg 2C is normal breakaway detents.
Central transmission bevel gear wheel 2G and steering planetary bull gear 2H connect as one, left planetary wheel 2A2 engages with steering planetary bull gear 2H, engage with left sun wheel 2A5 simultaneously, left planetary wheel 2A2 empty set is on the left compensating-gear shaft 2A3 of left pinion carrier 2A4, the splined hole of left pinion carrier 2A4 is connected with left half axle 2A6 castellated shaft, left half axle 2A6 has three sections of male spliness, the splined hole (seeing mark A place in Fig. 3) of left lateral star drg driving disc spacing pressing 2B1 is connected with left sun wheel 2A5 left part castellated shaft (seeing mark A place in Fig. 3), left lateral star brake friction dish 2B2 male splines (seeing mark B place in Fig. 3) is connected with left lateral star arrester shell 2B3 internal splined hole (seeing mark B place in Fig. 3), left lateral star arrester shell 2B3 and left spring stay bearing plate 2B6, rear-axle casing 2K links into an integrated entity with screw, the splined hole (seeing mark C place in Fig. 3) of left half axle drg driving disc spacing pressing 2C2 is connected with left half axle drg active hub 2C3 castellated shaft (seeing mark C place in Fig. 3), left half axle drg initiatively hub 2C3 splined hole (seeing mark D place in Fig. 3) is connected with left half axle 2A6 castellated shaft (seeing mark D place in Fig. 3), part on the left side from lever connection 2B7 right-hand member and be connected by screw thread with left platen 2B4, part on the left side from lever connection, 2B7 left end outside thread is connected by screw thread with left nut 2C9.Parting on the left side from lever connection 2B7 is stepped shaft, be provided with altogether 6, part on the left side from lever connection 2B7 along left half axle drg platen 2C1 axis even circumferential and distribute, part on the left side from lever connection 2B7 middle part small cylinder circular hole (see in Fig. 3 mark E place) free-running fit corresponding with left half axle drg platen 2C1 and can slide axially, part on the left side from the ladder cylinder face of joint on lever connection 2B7 and be resisted against left half axle drg platen 2C1 right side.Left braking is lived platen 2C6, the slow-witted platen 2C7 empty set of left braking on left lateral star arrester shell 2B3 left part axle journal (flag F place in seeing Fig. 3), left braking platen 2C6 alive can rotate relative to left lateral star arrester shell 2B3 left part axle journal (seeing flag F place in Fig. 3), rotational angle is by chaufeur control, the different different turn radiuss of the corresponding trac. of angle, rotational angle is larger, and turn radius is less.
The drive connection of each parts when crawler-tread tractor straight-line travelling: driving engine 5 power reach back axle 8, back axle 8 through power-transfer clutch 6, change speed gear box 7 and power mean allocation increased to the final driving device 9 in left and right after turning round deceleration and pass to Running System 11, the support zone of Running System 11 is connected with vehicle frame 10, the left and right sidesing driving wheel, left and right crawler belt that power mean allocation is driven Running System 11 by the live axle of the final driving device 9 in left and right directly and ground effects, ground, in the face of the antagonistic force of left and right crawler belt generation formed objects, drives crawler-tread tractor straight-line travelling, the drive connection of each parts when crawler-tread tractor left steering (right steering in like manner): driving engine 5 power are through power-transfer clutch 6, change speed gear box 7 back axles 8, the left steering wheel rotation of chaufeur sends signal to all-hydraulic wheel steering braking force control system 1, control star steering hardware steering link 2 by left connecting rod assembly 4, the power of back axle 8 no longer mean allocation arrives the final driving device 9 in left and right, the power that is assigned to left final driving device is less than right final driving device, cause the left and right crawler belt of Running System 11 to produce antagonistic force left small and right large, realize crawler-tread tractor left steering, continue left steering wheel rotation, the antagonistic force that left crawler belt generation is faced on ground constantly reduces, turnon left radius constantly reduces.Right steering in like manner.
Although the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technical personnel of being familiar with this technology, not departing from change and the retouching done in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (5)
1. all-hydraulic bearing circle planet turns to a crawler-tread tractor, comprises driving engine (5), power-transfer clutch (6), change speed gear box (7), back axle (8), final driving device (9), vehicle frame (10), Running System (11) and operator's compartment (12), is characterized in that: be also provided with all-hydraulic wheel steering braking force control system (1), steering planetary steering link (2), right connecting rod assembly (3) and left connecting rod assembly (4), described all-hydraulic wheel steering braking force control system (1) comprises braking in a turn valve (1A), braking in a turn oil cylinder group (1B), power steerig pump (1C), Full hydraulic steering gear (1D), brake pedal (1E), equipment oil pump (1F), bearing circle (1G), pressure-gradient control valve (1H) and fuel tank (1K), described steering planetary steering link (2) comprises left steering planetary (2A), left steering planetary drg (2B), left half axle drg (2C), right steering planetary (2D), right steering planetary drg (2E), right axle shaft drg (2F), central transmission bevel gear wheel (2G), steering planetary bull gear (2H), rear-axle casing (2K), braking in a turn oil cylinder group (1B) comprises left steering brake cylinder (1B2) and right steering brake cylinder (1B1), right steering brake cylinder (1B1) is connected by right connecting rod assembly (3) and the right braking platen alive (2F1) in right axle shaft drg (2F), and left steering brake cylinder (1B2) is connected by left connecting rod assembly (4) and the left braking platen alive (2C1) in left half axle drg (2C).
2. all-hydraulic bearing circle planet according to claim 1 turns to crawler-tread tractor, it is characterized in that: described braking in a turn valve (1A) comprises right brake activation valve (1A1), left brake activation valve (1A2), right steering valve (1A3), left steering valve (1A4), shuttle valve (1A5) and safety valve (1A6), braking in a turn oil cylinder group (1B) comprises right steering brake cylinder (1B1) and left steering brake cylinder (1B2), described fuel tank (1K) is connected with power steerig pump (1C), power steerig pump (1C) is connected with the oil inlet of pressure-gradient control valve (1H), the hydraulic fluid port CF of pressure-gradient control valve (1H) is connected with hydraulic fluid port P on Full hydraulic steering gear (1D) and the hydraulic fluid port P of braking in a turn valve (1A) respectively, the hydraulic fluid port EF of pressure-gradient control valve (1H) is connected with equipment oil pump (1F), bearing circle and Full hydraulic steering gear (1D) interlock, hydraulic fluid port A on Full hydraulic steering gear (1D) is connected with the left steering valve (1A4) in braking in a turn valve (1A), left steering valve (1A4) is connected with left brake activation valve (1A2), left brake activation valve (1A2) is connected with the left steering brake cylinder (1B2) in braking in a turn oil cylinder group (1B), hydraulic fluid port B on Full hydraulic steering gear (1D) is connected with the right steering valve (1A3) in braking in a turn valve (1A), right steering valve (1A3) is connected with right brake activation valve (1A1), right brake activation valve (1A1) is connected with the right steering brake cylinder (1B1) in braking in a turn oil cylinder group (1B), hydraulic fluid port P on Full hydraulic steering gear (1D) is connected with the hydraulic fluid port P of braking in a turn valve (1A), the hydraulic fluid port P of braking in a turn valve (1A) is connected with shuttle valve (1A5) and safety valve (1A6) respectively, shuttle valve (1A5) is connected with left steering brake cylinder (1B2) and right steering brake cylinder (1B1) respectively with right brake activation valve (1A1) by left brake activation valve (1A2), hydraulic fluid port T on Full hydraulic steering gear (1D) is connected with fuel tank, brake pedal (1E) and right brake activation valve (1A1) and left brake activation valve (1A2) interlock.
3. all-hydraulic bearing circle planet according to claim 1 turns to crawler-tread tractor, it is characterized in that: described left steering planetary (2A), left steering planetary drg (2B), left half axle drg (2C) are arranged in rear-axle casing (2K) with right steering planetary (2D), right steering planetary drg (2E), right axle shaft drg (2F) symmetry, and described left steering planetary (2A) shares a steering planetary bull gear (2H) with right steering planetary (2D).
4. all-hydraulic bearing circle planet according to claim 3 turns to crawler-tread tractor, it is characterized in that: described left steering planetary drg (2B) comprises left lateral star drg driving disc spacing pressing (2B1), left lateral star brake friction dish (2B2), left lateral star arrester shell (2B3), left platen (2B4), left belleville spring (2B5), left spring stay bearing plate (2B6) and parts on the left side from lever connection (2B7);
Described left half axle drg (2C) comprises initiatively hub (2C3), left half axle brake friction dish (2C4), left thrust baring (2C5), left braking platen alive (2C6), left braking slow-witted platen (2C7), left support steel ball (2C8) and left nut (2C9) of left half axle drg platen (2C1), left half axle drg driving disc spacing pressing (2C2), left half axle drg;
The splined hole of left lateral star drg driving disc spacing pressing (2B1) is connected with left sun wheel (2A5) the left part castellated shaft in left steering planetary (2A), left lateral star brake friction dish (2B2) male splines is connected with left lateral star arrester shell (2B3) internal splined hole, left lateral star arrester shell (2B3) and left spring stay bearing plate (2B6), rear-axle casing (2K) links into an integrated entity with screw, the splined hole of left half axle drg driving disc spacing pressing (2C2) is connected with left half axle drg active hub (2C3) castellated shaft, left half axle drg initiatively hub (2C3) splined hole is connected with left half axle (2A6) castellated shaft in left steering planetary (2A), part on the left side from lever connection (2B7) right-hand member and be connected by screw thread with left platen (2B4), part on the left side from lever connection (2B7) left end outside thread and be connected by screw thread with left nut (2C9), part on the left side from lever connection (2B7) the middle part cylinder circular hole free-running fit corresponding with left half axle drg platen (2C1) and can slide axially, left braking platen alive (2C6), left braking is stayed platen (2C7) empty set on the axle journal of left lateral star arrester shell (2B3) left part, left braking platen alive (2C6) can rotate relative to left lateral star arrester shell (2B3) left part axle journal,
Right steering planetary drg (2E), right axle shaft drg (2F) are symmetrical arranged with reference to left steering planetary drg (2B), left half axle drg (2C) respectively.
5. all-hydraulic bearing circle planet according to claim 1 turns to crawler-tread tractor, it is characterized in that: described left connecting rod assembly (4) comprises upper left rocking arm (4A), lower-left rocking arm (4B), left connecting rod (4C), upper left rocking arm (4A) one end is connected with left steering brake cylinder (1B2) piston rod, the other end is connected with the one end of lower-left rocking arm (4B), the other end of lower-left rocking arm (4B) is connected with one end of left connecting rod (4C), the other end of left connecting rod (4C) is connected with left braking platen alive (2C6), right connecting rod assembly (3) is symmetrical arranged with reference to left connecting rod assembly (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210111102.1A CN102649448B (en) | 2012-04-17 | 2012-04-17 | Hydraulic steering wheel planetary steering crawler tractor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210111102.1A CN102649448B (en) | 2012-04-17 | 2012-04-17 | Hydraulic steering wheel planetary steering crawler tractor |
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| CN102649448A CN102649448A (en) | 2012-08-29 |
| CN102649448B true CN102649448B (en) | 2014-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3222478A1 (en) * | 2016-03-25 | 2017-09-27 | Poclain Hydraulics Industrie | Redundant braking system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128933B (en) * | 2015-04-07 | 2017-10-24 | 中国人民解放军装甲兵工程学院 | Planet turns to machine air-operated control device |
| CN106184365B (en) * | 2016-08-30 | 2019-05-10 | 第一拖拉机股份有限公司 | Endless-track vehicle steering control mechanism |
| US11472395B2 (en) | 2020-02-28 | 2022-10-18 | Cnh Industrial America Llc | System and method for executing multi-mode turns with a work vehicle |
| CN115107872A (en) * | 2022-05-24 | 2022-09-27 | 无锡拉菲可科技有限公司 | Steering mechanism of crawler tractor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002337559A (en) * | 2001-05-18 | 2002-11-27 | Iseki & Co Ltd | Power transmitting device for work vehicle |
| JP4062085B2 (en) * | 2002-12-18 | 2008-03-19 | 株式会社豊田自動織機 | Electric industrial vehicle steering system |
| CN1835861A (en) * | 2003-08-19 | 2006-09-20 | 株式会社日立制作所 | Power steering device and method of controlling the power steering device |
| CN202608869U (en) * | 2012-04-17 | 2012-12-19 | 高红 | Full-hydraulic steering wheel planetary-steering caterpillar tractor |
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2012
- 2012-04-17 CN CN201210111102.1A patent/CN102649448B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3222478A1 (en) * | 2016-03-25 | 2017-09-27 | Poclain Hydraulics Industrie | Redundant braking system |
| FR3049248A1 (en) * | 2016-03-25 | 2017-09-29 | Poclain Hydraulics Ind | REDUNDANT BRAKING DEVICE |
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| CN102649448A (en) | 2012-08-29 |
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Address after: Hangzhou City, Zhejiang Province, the new 311228 Bay Street Xiaoshan District No. 1 Linglu Sheng Applicant after: HANGZHOU GEGAO MACHINE CO., LTD. Address before: Hangzhou City, Zhejiang Province, the new 311228 Bay Street Xiaoshan District No. 1 Linglu Sheng Applicant before: Hangzhou Gegao Machine Co., Ltd. |
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