CN209072863U - A kind of boat-type tractor suspension hydraulic system - Google Patents

Abstract

The utility model relates to a kind of boat-type tractor suspension hydraulic system, gear pump connects oil filter by oil pipe, and oil pipe connects overflow valve；Gear pump connects hand-operated direction valve by high-pressure oil pipe, fills check valve on high-pressure oil pipe；Four-way hand-operated direction valve connects integrated package by left and right connected pipes, and integrated package taps two hydraulic cylinders through oil pipe；Oil return pipe connects 3-position 4-way hand-operated direction valve and fuel tank.The discharge capacity of the utility model gear pump, revolving speed are big, increase the internal diameter of high-pressure oil pipe, oil return pipe and connected pipes, change its structure, can reduce power consumption, effectively promote speed；Volume of fuel tank is big, and radiating efficiency is high；There are safety valve, speed governing valve in integrated package, can effectively avoid reversal valve in commutation, loine pressure cataclysm keeps speed regulation steady.The utility model structure is simple and convenient to operate, system power loss can be reduced, reduce calorific value, it can be achieved that the promotions of agricultural machinery and implement, decline, neutrality three processes, promote that agricultural machinery and implement speed is fast, work efficiency is high, and safe and reliable.

Description

A kind of boat-type tractor suspension hydraulic system

Technical field

The utility model relates to agro-farming machinery fields, and in particular to a kind of boat-type tractor suspension hydraulic system.

Background technique

The use of boat-type tractor (being commonly called as boat tractor) starts from China's 1970s, it utilizes slick and frivolous formula working principle Paddy-field-working is carried out, is one of Main Agricultural machinery used in south China Rice Cropping region.

Suspension hydraulic system is the important component of agricultural machinery, it is to adjust agriculture by control three-link hitch Working condition of equipment under the conditions of different work improves operating efficiency with this.Boat-type tractor suspension hydraulic system at present All it is to copy common wheeled tractor, analysis individually is not designed to suspension hydraulic system, since the two is deposited in structure In difference, so having the following deficiencies: discharge capacity 6mL/r, the revolving speed 1000r/min of gear pump gear pump, discharge capacity is relatively low to be caused to supply Low on fuel；There is no speed governing valve in integrated package, while fluid pressure line type selecting and arrangement are unreasonable；High-pressure oil pipe is internal diameter 8mm, is had 4 90 ° of bend pipes, 1 120 ° of bend pipe, 3 90 ° of connector and overall length 3.7m straight steel pipe；Integrated package and hydraulic cylinder rod chamber Pipeline between rodless cavity all uses steel pipe, easy heat radiation；Left and right connected pipes internal diameter 8mm, oil return bore 12mm, fuel tank Can to regard as a bottom surface radius be 820mm, the cylindrical body fuel tank of height 560mm.Fuel sucking pipe be entire hydraulic system in most Long pipe runs, but it does not account for the influence of other components when arranging pipeline, causes pipeline maintenance in part inconvenient.In short, existing It is slow etc. that some boat-type tractor suspension hydraulic systems are there is underpower, pressure loss in piping is excessive, agricultural machinery and implement promote speed Disadvantage.

So far, domestic and foreign scholars not yet individually design boat-type tractor suspension hydraulic system and analyze and test Verifying.

Summary of the invention

The purpose of this utility model is for above-mentioned status, it is desirable to provide a kind of structure is simple and convenient to operate, and can be reduced System power loss reduces calorific value, and agricultural machinery and implement promote speed and improve the boat-type tractor suspension hydraulic system of working efficiency.

The implementation of the utility model aim is that a kind of boat-type tractor suspension hydraulic system, fuel tank connects through fuel sucking pipe Oil filter, gear pump connect oil filter by oil pipe, and oil pipe connects overflow valve；It is manual that gear pump by high-pressure oil pipe connects 3-position 4-way Reversal valve fills check valve on high-pressure oil pipe；Four-way hand-operated direction valve connects integrated package by left and right connected pipes, and integrated package connects oil Pipe taps two hydraulic cylinders；Oil return pipe connects 3-position 4-way hand-operated direction valve and fuel tank；

The oil inlet and outlet of the matrix of integrated package is connected with reversal valve, and oil return opening is connect with fuel tank, and matrix connects intermediate mass on one side, Connect safety valve on one side, the another side of intermediate mass connects upper and lower speed governing valve；Connect jacking block on upper speed governing valve, have between jacking block and safety valve it is upper, Lower flow divider-combiner；Flow divider-combiner, speed governing valve have a plurality of oil circuit inside intermediate mass, respectively from different hydraulic components phases It is logical；Matrix, intermediate mass and jacking block are bolted and are fixed on cabinet；

The tank design is length × width × height=2000 × 1000 × 560mm cuboid fuel tank；In high-pressure oil pipe 13 Diameter expands as 12mm by 8mm；Left and right connected pipes internal diameter is 10mm；The internal diameter of oil return pipe is 16mm；The discharge capacity of gear pump is 10mL/r, revolving speed 1450r/min.

The utility model increases the discharge capacity of gear pump, revolving speed, increases high-pressure oil pipe, oil return pipe and left and right connection oil The internal diameter of pipe changes its structure, can reduce power consumption, effectively promote speed；Volume of fuel tank is improved, fuel tank radiating surface is increased Product, improves fuel tank radiating efficiency；To avoid reversal valve during commutation, loine pressure cataclysm is added in integrated package Safety valve；It is unstable to avoid hydraulic cylinder speed excessive or adjusting the speed, speed governing valve is added in integrated package.

The utility model structure is simple and convenient to operate, and can be reduced system power loss, be reduced calorific value, it can be achieved that agriculture The promotion of equipment, decline, neutrality three processes, promote that agricultural machinery and implement speed is fast, work efficiency is high, and safe and reliable.

Detailed description of the invention

Fig. 1 is this utility model hydraulic system principle figure,

Fig. 2 is the utility model hydraulic system substep schematic diagram,

Fig. 3 is integrated block structure schematic diagram,

Fig. 4 is high-pressure oil pipe structural schematic diagram.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawings.

Referring to Fig.1,2, the fuel tank 1 of the utility model connects oil filter 2 through fuel sucking pipe 14, and gear pump 4 connects oil strain by oil pipe Device 2, oil pipe connect overflow valve 3.Gear pump 4 connects 3-position 4-way hand-operated direction valve 6 by high-pressure oil pipe 13, fills on high-pressure oil pipe single To valve 5, four-way hand-operated direction valve connects integrated package 8 by left connected pipes 7, right connected pipes 11, and integrated package connects the tap of oil pipe 10 Two hydraulic cylinders 9, oil return pipe 12 connect 3-position 4-way hand-operated direction valve 6 and fuel tank.

Referring to Fig. 3, to avoid reversal valve during commutation, safety valve is added in loine pressure cataclysm in integrated package； It is unstable to avoid hydraulic cylinder speed excessive or adjusting the speed, speed governing valve is added in integrated package.The disengaging oil of the matrix 8.1 of integrated package 8 Mouth is connected with reversal valve 6, and oil return opening is connect with fuel tank 1, and matrix connects intermediate mass 8.2 on one side, connects safety valve 8.8, intermediate mass on one side Another side connect left and right symmetrically lower speed governing valve 8.3, upper speed governing valve 8.4, connect jacking block 8.5, jacking block and safety valve on upper speed governing valve Between have a upper flow divider-combiner 8.6, lower flow divider-combiner 8.7, flow divider-combiner, speed governing valve have a plurality of oil circuit inside intermediate mass, point It is not communicated from different hydraulic components.Matrix 8.1, intermediate mass 8.2, jacking block 8.4 are bolted and are fixed on cabinet.

Upper and lower flow divider-combiner 8.6,8.7 is connected through a screw thread and is fixed among safety valve 8.8 and intermediate mass 8.2.

To increase power, the discharge capacity of the utility model gear pump 4 increases to 10mL/r by 6mL/r, and revolving speed is by 1000r/min Increase to 1450r/min.

Need to increase fuel tank heat dissipation area to improve the radiating efficiency of fuel tank.To avoid hydraulic oil container influence reversal valve, mentioning The use of other components such as device is risen, therefore the utility model keeps the height of fuel tank constant, is length × width × height by tank design The cuboid fuel tank of=2000 × 1000 × 560mm.

To reduce power consumption, promotes agricultural machinery and implement speed and working efficiency, the utility model are expanded 13 internal diameter of high-pressure oil pipe by 8mm Greatly 12mm, high-pressure oil pipe be there are two 90 ° of bend pipes, 2 120 ° of bend pipes, the steel pipe of 2 90 ° of connectors and 3m long, 1m long it is soft Pipe.Left connected pipes 7, right connected pipes 11 are to have 3 90 ° of bend pipes, 1 gradation type pipe fitting and 1 transit joint, overall length The steel pipe of 1.2m；Its internal diameter has original 8mm to be expanded to 10mm.

The internal diameter of the utility model oil return pipe 12 increases to 16mm by 12mm, the power consumption of entire hydraulic system can be made to reduce, Calorific value reduces.Oil return pipe is to have 30 ° of bend pipes, 2 90 ° of bend pipes, 1 135 ° of bend pipe, 1 60 ° of bent sub and 2 gradual changes Type pipe fitting, the steel pipe of overall length 2m.The internal diameter of fuel sucking pipe 14 be 12mm, fuel sucking pipe be have 5 90 ° of bend pipes, 3 90 ° of pipe fittings, The steel pipe of overall length 4m adds 3 sections of rubber tubes again, and rubber tube is attached with steel pipe using the holding sleeve joint of straight-through pipe of φ 18.

The oil filter 2, gear pump 4, overflow valve 3, check valve 5 of the utility model are in close to the position of fore, remaining zero Component is then in the middle and back of ship, so needing to consider other transmission components when arranging fluid pressure line.

Referring to Fig. 4, the straight steel pipe 16 1 of left and right high-pressure oil pipe terminates gradation type pipe fitting 15, and one end passes through transit joint 18 connect 90 ° of bend pipes 17, using this design, are not only convenient for later maintenance, can also reduce crushing, increase heat dissipation capacity.

Using the utility model, gear pump 4 works, and the hydraulic oil in fuel tank 1 is after the filtering of oil filter 2, through high-pressure oil pipe 13 reach 3-position 4-way hand-operated direction valve 6.When hand-operated direction valve 6 is in left position, hydraulic oil flows to matrix through left connected pipes 7 8.1 oil inlet flows to flow divider-combiner 8.7 from oil inlet through the internal oil passages of intermediate mass 8.2.Divide through flow divider-combiner 8.7 After stream, left and right symmetrically lower speed governing valve 8.3 is flowed to respectively by the internal oil passages of intermediate mass 8.2.It is flowed out from lower speed governing valve 8.3 The rodless cavity that oil pipe 10 flows to hydraulic cylinder 9 is connect through integrated package, the piston rod of hydraulic cylinder 9 moves upwards at this time, realizes agricultural machinery The promotion of tool.Hydraulic oil in hydraulic cylinder rod chamber connects oil pipe 10 through integrated package and has returned to flow divider-combiner 8.6, and hydraulic oil is through dividing After the afflux process for flowing combiner valve 8.6, the oil outlet of matrix 8.1 is flowed to by the internal oil passages of intermediate mass 8.2.Using right connection Oil pipe 11 returns to 3-position 4-way hand-operated direction valve, then returns to fuel tank 1 by oil return pipe 12.

Similarly, when 3-position 4-way hand-operated direction valve 6 is in right position, the decline of agricultural machinery and implement is realized.Agricultural machinery and implement promoted and During decline, the pressure of the adjustable integrated package internal oil passages of safety valve 8.8.When 3-position 4-way hand-operated direction valve 6 is in When middle position, oil return pipe 12 is directly over from the hydraulic oil for flowing through 3-position 4-way hand-operated direction valve and returns to fuel tank, at this time at agricultural machinery and implement In neutral condition.

The utility model can realize the promotions of agricultural machinery and implement, decline, neutrality three processes, promote agricultural machinery and implement speed and work Efficiency, and it is safe and reliable.

Claims (7)

1. boat-type tractor suspension hydraulic system, fuel tank connects oil filter through fuel sucking pipe, and gear pump connects oil filter, oil pipe by oil pipe Connect overflow valve；Gear pump connects 3-position 4-way hand-operated direction valve by high-pressure oil pipe, fills check valve on high-pressure oil pipe；Four-way is manual Reversal valve connects integrated package by left and right connected pipes, and integrated package connects oil pipe and taps two hydraulic cylinders；Oil return pipe connects 3-position 4-way hand Dynamic reversal valve and fuel tank；

It is characterized by: the oil inlet and outlet of the matrix of integrated package is connected with reversal valve, oil return opening is connect with fuel tank, and matrix connects on one side Intermediate mass, connects safety valve on one side, and the another side of intermediate mass connects upper and lower speed governing valve；Connect jacking block, jacking block and safety valve on upper speed governing valve Between have upper and lower flow divider-combiner；Flow divider-combiner, speed governing valve have a plurality of oil circuit inside intermediate mass, respectively from different hydraulic zero Component communicates；Matrix, intermediate mass and jacking block are bolted and are fixed on cabinet；

The tank design is length × width × height=2000 × 1000 × 560mm cuboid fuel tank；High-pressure oil pipe internal diameter is 12mm；Left and right connected pipes internal diameter is 10mm；The internal diameter of oil return pipe is 16mm；The discharge capacity of gear pump is 10mL/r, and revolving speed is 1450r/min。

2. a kind of boat-type tractor suspension hydraulic system according to claim 1, it is characterised in that: integrated package it is upper and lower It is connected through a screw thread and fixes among flow divider-combiner, safety valve and intermediate mass.

3. a kind of boat-type tractor suspension hydraulic system according to claim 1, it is characterised in that: high-pressure oil pipe is to have two A 90 ° of bend pipes, 2 120 ° of bend pipes, the steel pipe of 2 90 ° of connectors and 3m long, 1m long hose.

4. a kind of boat-type tractor suspension hydraulic system according to claim 1, it is characterised in that: left and right connected pipes To have 3 90 ° of bend pipes, 1 gradation type pipe fitting and 1 transit joint, the steel pipe of overall length 1.2m.

5. a kind of boat-type tractor suspension hydraulic system according to claim 1, it is characterised in that: oil return pipe is to have one 30 ° of bend pipes, 2 90 ° of bend pipes, 1 135 ° of bend pipe, 1 60 ° of bent sub and 2 gradation type pipe fittings, the steel pipe of overall length 2m.

6. a kind of boat-type tractor suspension hydraulic system according to claim 1, it is characterised in that: the internal diameter of fuel sucking pipe is 12mm, fuel sucking pipe are to have the steel pipe of 5 90 ° of bend pipes, 3 90 ° of pipe fittings, overall length 4m to add 3 sections of rubber tubes, rubber tube and steel pipe again It is attached using the holding sleeve joint of straight-through pipe of φ 18.

7. a kind of boat-type tractor suspension hydraulic system according to claim 1, it is characterised in that: left and right high-pressure oil pipe Straight steel pipe one terminate gradation type pipe fitting, one end connects 90 ° of bend pipes by transit joint.