阅读说明：本技术 液压系统半闭式油箱 (The half-closed fuel tank of hydraulic system ) 是由 黄斌 赵泽文 李一波 邓仕钊 蔡毅龙 梁波 廖武荣 陈旭东 郭华 于绍平 韦翠光 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种液压系统半闭式油箱,包括设有主油箱排油管的主油箱,主油箱内装有主油箱油液,主油箱设有连接油泵的吸油管,油泵的出油端通过高压油管连接控制阀的进油端,控制阀通过两根控制油管一进一出地连接动作执行单元的两个受排油口,控制阀的回油端通过回油管连接主油箱内部,主油箱上设有主油箱补油管及补油阀,主油箱旁设置一个副油箱,主油箱和副油箱之间设有通气孔,副油箱油液中设有一个开多个通孔的带伸缩支架的箱体,箱体连接所述副油箱外的空气帽,主油箱设有单向阀。本发明可以解决现有液压系统油箱不能同时兼顾与外界大气进行气体交换又不污染主油箱油液的问题。(The invention discloses a kind of half-closed fuel tanks of hydraulic system, main fuel tank including being equipped with main fuel tank oil exit pipe, main fuel tank is provided with main fuel tank oil liquid, main fuel tank is equipped with the fuel sucking pipe of connection oil pump, the oil outlet of oil pump connects the oil inlet end of control valve by high-pressure oil pipe, two of control valve with passing through two control oil pipe one-in-and-one-outs connecting moves execution unit are by oil discharge outlet, the oil revolving end of control valve is connected inside main fuel tank by oil return pipe, main fuel tank is equipped with main fuel tank repairing pipe and Fill valve, one auxiliary fuel tank is set by main fuel tank, venthole is equipped between main fuel tank and auxiliary fuel tank, the cabinet with telescope support for opening multiple through-holes is equipped in auxiliary fuel tank oil liquid, cabinet connects the air cap outside the auxiliary fuel tank, main fuel tank is equipped with check valve.The present invention, which can solve existing hydraulic system fuel tank, cannot combine the problem of carrying out gas exchanges with ambient atmosphere and do not pollute main fuel tank oil liquid.)

1. a kind of half-closed fuel tank of hydraulic system, the main fuel tank including being equipped with main fuel tank oil exit pipe and draining valve, the main fuel tank It is provided with main fuel tank oil liquid, one end is equipped in the main fuel tank and stretches in other end connection oil pump suction under the main fuel tank oil liquid liquid level The fuel sucking pipe at oily end, the oil outlet of the oil pump connect the oil inlet end of control valve by high-pressure oil pipe, and two of the control valve Control oily end by two control oil pipe one-in-and-one-outs two of connecting moves execution unit by oil discharge outlet, the control valve Oil revolving end is connected inside main fuel tank by oil return pipe, and the main fuel tank is equipped with main fuel tank repairing pipe and Fill valve, and feature exists In: the auxiliary fuel tank of a built-in auxiliary fuel tank oil liquid is provided with by the main fuel tank by partition, the partition is in the main fuel tank Position on oil liquid and the auxiliary fuel tank oil liquid is provided with venthole, is equipped with one in the auxiliary fuel tank oil liquid and opens multiple through-holes Hollow box body, the cabinet connect the air cap outside the auxiliary fuel tank, and the cabinet has telescope support；The main fuel tank top Portion is equipped with check valve, and the auxiliary fuel tank bottom is equipped with auxiliary fuel tank oil exit pipe and draining valve.

2. the half-closed fuel tank of hydraulic system according to claim 1, it is characterised in that: the liquid level of the auxiliary fuel tank oil liquid is high Degree is the 30%~70% of the auxiliary fuel tank inner height.

3. the half-closed fuel tank of hydraulic system according to claim 1 or 2, it is characterised in that: the liquid of the main fuel tank oil liquid Face height is the 60%~90% of main fuel tank inner height.

4. the half-closed fuel tank of hydraulic system according to claim 3, it is characterised in that: the cabinet connects institute by hose State air cap.

5. the half-closed fuel tank of hydraulic system according to claim 4, it is characterised in that: the air cap lower end by leading firmly Pipe connects the upper end of the hose.

6. the half-closed fuel tank of hydraulic system according to claim 5, it is characterised in that: the telescope support is three feet Frame, three stabilizer blades of the tripod are mutually nested flexible stabilizer blade.

Technical field

The present invention relates to hydraulic system manufacturing technology field, especially a kind of fuel tank for hydraulic system.

Background technique

Existing hydraulic reservoir mainly has an open type oil tank of hydraulic system and hydraulic system sealed reservoir, and both liquid There is biggish defect in pressure system fuel tank, can not be used widely well under the particular surroundings such as dusty.

Existing hydraulic system sealed reservoir includes the main fuel tank that bottom is equipped with main fuel tank oil exit pipe and draining valve, main fuel tank It is provided with main fuel tank oil liquid, stretches in the suction at other end connection oil pump suction end under main fuel tank oil liquid liquid level in main fuel tank equipped with one end Oil pipe, the oil outlet of oil pump connect the oil inlet end of control valve by high-pressure oil pipe, and the oily end of two controls of control valve passes through two Control oil pipe one-in-and-one-out two of connecting moves execution unit by oil discharge outlet, control valve oil revolving end passes through oil return pipe connection master Fuel tank internal, main fuel tank are equipped with main fuel tank repairing pipe and Fill valve, such hydraulic reservoir, due to big not with the external world The contact channel of gas, is isolated with ambient atmosphere, cannot the normally corresponding outlet air inlet with the one-in-and-one-out of oil liquid, i.e., cannot Eupnea, and to generate excessive negative pressure and positive pressure in main fuel tank, generation builds the pressure, and action execution unit cannot obtain completely Movement even failure.

Existing open type oil tank of hydraulic system is to increase setting one on the main fuel tank of existing hydraulic system sealed reservoir A air cleaner since air cleaner and extraneous atmosphere can carry out gas exchanges, thus solves in main fuel tank Build the pressure problem, but because existing air cleaner technology limits, filter efficiency is low, and main fuel tank sucking air is difficult to avoid that air In impurity dust bring into main fuel tank with the exchange of gas, pollute main fuel tank oil liquid.

Summary of the invention

The problem to be solved by the invention is to provide a kind of half-closed fuel tanks of hydraulic system, to solve existing hydraulic system oil Case cannot combine the problem of carrying out gas exchanges with ambient atmosphere and do not pollute main fuel tank oil liquid.

To solve the above-mentioned problems, the technical scheme is that the half-closed fuel tank of this hydraulic system includes being equipped with main oil The main fuel tank of case oil exit pipe and draining valve, the main fuel tank are provided with main fuel tank oil liquid, stretch in the main fuel tank equipped with one end The fuel sucking pipe at other end connection oil pump suction end, the oil outlet of the oil pump pass through high-pressure oil pipe under the main fuel tank oil liquid liquid level Connect the oil inlet end of control valve, by two control oil pipe one-in-and-one-outs the connecting moves of the oily end of two controls of the control valve Two of execution unit are connected inside main fuel tank by oil discharge outlet, the oil revolving end of the control valve by oil return pipe, the main fuel tank It is equipped with main fuel tank repairing pipe and Fill valve, is provided with the pair oil of a built-in auxiliary fuel tank oil liquid by the main fuel tank by partition Case, position of the partition on the main fuel tank oil liquid and the auxiliary fuel tank oil liquid are provided with venthole, the auxiliary fuel tank oil It is equipped with the hollow box body for opening multiple through-holes in liquid, the cabinet connects the air cap outside the auxiliary fuel tank, under the cabinet Equipped with telescope support；Check valve is equipped at the top of the main fuel tank, the auxiliary fuel tank bottom is equipped with auxiliary fuel tank oil exit pipe and draining valve.

In above-mentioned technical proposal, more specifically scheme may is that the liquid level of the auxiliary fuel tank oil liquid is the pair The 30%~70% of fuel tank inner height.

Further: the liquid level of the main fuel tank oil liquid is the 60%~90% of main fuel tank inner height.

Further: the cabinet connects the air cap by hose.

Further: the air cap lower end connects the upper end of the hose by fibre conduit.

Further: the telescope support is a tripod, and three stabilizer blades of the tripod are mutually nested flexible Stabilizer blade.

By adopting the above-described technical solution, compared with prior art, the present invention has the following advantages:

The half-closed fuel tank of this hydraulic system uses two Oiltank structures of major-minor, and two fuel tank tops of major-minor are connected to by venthole, Main fuel tank does not contact with atmosphere and is responsible for normal fuel injection and the control of hydraulic system directly, passes through auxiliary fuel tank oil liquid shape in auxiliary fuel tank At fluid-tight air-isolation, while main fuel tank inside generate positive pressure when, by check valve directly be vented eliminate positive pressure, generation negative pressure When outside air sucked by air cap, outside air entered in cabinet by fibre conduit and hose, the outside air in cabinet It is overflowed by multiple through-holes and auxiliary fuel tank oil liquid carries out being sufficiently mixed contact, the dust that auxiliary fuel tank oil liquid absorbs in air is analysed simultaneously Cleaned air is supplied to main fuel tank by venthole out, and negative pressure obtains supplement balance in main fuel tank, and elimination builds the pressure；Main fuel tank oil liquid The restriction of liquid level position is the best liquid level position that main hydraulic system works normally；The restriction of auxiliary fuel tank oil liquid liquid level position is most The good most effective liquid level position for absorbing air plankton dust；Telescope support under cabinet, the height of adjustable cabinet, cabinet are high The peak suction that the adjustable main fuel tank of adjustment of lower position generates；Air cap both can provide air to auxiliary fuel tank, in secondary oil Air cap can be removed when case low on fuel again, is auxiliary fuel tank repairing by fibre conduit and hose；The half-closed oil of this hydraulic system Case solves to generate well to build the pressure simultaneously, action execution unit cannot obtain completely acting even failure and impurity dust with The problem of exchange of gas is brought into main fuel tank, and main fuel tank oil liquid is polluted, it is easy to use, it is simple for structure.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the embodiment of the present invention；

Figure label indicates are as follows: 1, main fuel tank oil exit pipe and draining valve, 2, main fuel tank, 3, main fuel tank oil liquid, 4, fuel sucking pipe, 5, oil Pump, 6, high-pressure oil pipe, 7, control valve, 8, control oil pipe, 9, action execution unit, 10, main fuel tank repairing pipe and Fill valve, 11, Oil return pipe, 12, check valve, 13, venthole, 14, air cap, 15, fibre conduit, 16, auxiliary fuel tank, 17, hose, 18, cabinet, 19, Through-hole, 20 auxiliary fuel tank oil liquid, 21 auxiliary fuel tank oil exit pipes and draining valve, 22 telescope supports, 23 partitions.

Specific embodiment

The embodiment of the present invention is described in further detail with reference to the accompanying drawing:

The half-closed fuel tank of this hydraulic system as shown in Figure 1, the main fuel tank 2 including being equipped with main fuel tank oil exit pipe and draining valve 1 are main Fuel tank oil exit pipe and draining valve 1 are set to the bottom of main fuel tank 2, oil extraction convenient to overhaul.Main fuel tank 2 is provided with main fuel tank oil liquid 3, main The fuel sucking pipe 4 of other end connection 5 oil absorbing end of oil pump under 3 liquid level of main fuel tank oil liquid is stretched in fuel tank 2 equipped with one end, oil pump 5 goes out Oily end connects the oil inlet end of control valve 7 by high-pressure oil pipe 6, and the oily end of two controls of control valve 7 passes through two control oil pipes 8 one Into one out two of connecting moves execution unit 9 by oil discharge outlet, the oil revolving end of control valve 7 connects main fuel tank by oil return pipe 11 Inside 2, and the lower end of oil return pipe 11 is extend under 3 liquid level of main fuel tank oil liquid, and main fuel tank 2 is equipped with main fuel tank repairing pipe and benefit Oil valve 10.

The auxiliary fuel tank 16 of a built-in auxiliary fuel tank oil liquid 20 is provided with by main fuel tank 2 by partition 23, partition 23 is in main oil Position on case oil liquid 3 and auxiliary fuel tank oil liquid 20 is provided with venthole 13, and the separation in two regions is realized with better simply structure, Main fuel tank oil liquid 3 does not circulate mutually with auxiliary fuel tank oil liquid 20；The liquid level of main fuel tank oil liquid 3 be 2 inner height of main fuel tank 60%~ 90%, the liquid level of main fuel tank oil liquid 3 here is the 90% of 2 inner height of main fuel tank, and the liquid level of auxiliary fuel tank oil liquid 20 is The 30%~70% of 16 inner height of auxiliary fuel tank, the liquid level of auxiliary fuel tank oil liquid 20 here are the 70% of 16 inner height of auxiliary fuel tank, main The restriction of 3 liquid level position of fuel tank oil liquid is the best liquid level position that main hydraulic system works normally；20 liquid level position of auxiliary fuel tank oil liquid The restriction set is the best most effective liquid level position for absorbing air plankton dust.

The hollow box body 18 for opening multiple through-holes 19 is equipped in auxiliary fuel tank oil liquid 20, cabinet 18 connects outside auxiliary fuel tank 16 Air cap 14, cabinet 18 connect air cap 14 by hose 17, and 14 lower end of air cap connects the upper of hose 17 by fibre conduit 15 End, air cap 14 both can provide air to auxiliary fuel tank 16, and can remove air cap again in 16 low on fuel of auxiliary fuel tank, pass through Fibre conduit 15 and hose 17 are 16 repairing of auxiliary fuel tank；Cabinet 18 has telescope support 22, and the use of telescope support 22 can adjust The high and low position of whole box body 18, telescope support 22 are a tripod, and three stabilizer blades of tripod are mutually nested flexible branch Foot after adjusting collapsing length, can be locked with lock-screw, and the adjustable main fuel tank 2 of the adjustment of 18 high and low position of cabinet produces Raw peak suction；16 bottom of auxiliary fuel tank is equipped with auxiliary fuel tank oil exit pipe and draining valve 21, for overhauling oil extraction.

The half-closed fuel tank of this hydraulic system uses two Oiltank structures of major-minor, and two fuel tank tops of major-minor pass through venthole 13 Connection, main fuel tank 2 do not contact and are responsible for atmosphere normal fuel injection and the control of hydraulic system directly, pass through secondary oil in auxiliary fuel tank 16 The fluid-tight air-isolation that case oil liquid 20 is formed, while elimination is directly vented by check valve 12 when generation positive pressure inside main fuel tank 2 Positive pressure, sucks outside air by air cap 14 when generating negative pressure, and outside air enters cabinet by fibre conduit 15 and hose 17 In 18, outside air is overflowed by multiple through-holes 19 in cabinet 18 and auxiliary fuel tank oil liquid 20 carries out being sufficiently mixed contact, secondary oil Case oil liquid 20, which absorbs the dust in air while cleaned air is precipitated, is supplied to main fuel tank 2 by venthole 13, bears in main fuel tank 2 Pressure obtains supplement balance, solves conventional hydraulic because main fuel tank 2 builds the pressure simultaneously well, causes action execution unit 9 cannot It is completely acted, impurity dust brings in main fuel tank 2 the problem of polluting main fuel tank oil liquid, user into the exchange of gas Just, simple for structure.