CN206092582U - Filter is used on line to hydraulic transmission box test bench - Google Patents

Abstract

The utility model provides a filter is used on line to hydraulic transmission box test bench, including setting firmly the cartridge filter on the base, be equipped with oil inlet, oil -out on the cartridge filter, the cartridge filter includes through the primary filter section of thick bamboo of connecting pipe series connection in proper order, intermediate cartridge filter and final stage cartridge filter, the cartridge filter includes barrel, top cap, bottom plate, and the oil -out is seted up on the lateral wall of barrel, and the oil inlet is seted up on the bottom plate, the inside of barrel sets firmly the oil pipe that leads with the oil inlet intercommunication, and the periphery cover of leading oil pipe is equipped with the filter core, is located the barrel of leading the oil pipe top and is equipped with the float, and the top of float is connected with the case, carries on spacingly through stop nut after the top cap is passed on the top of case, the barrel is inside to form gather qi together room and accumulator respectively, under the fluid buoyancy, makes the case reciprocate along with the float and makes gather qi together room and external atmosphere communicate or close. Thereby in time discharge the gas of filter cohesion collection, realized the online loop filter of gearbox test oil expenses.

Description

A kind of hydraulic transmission box testing stand uses filter online

Technical field

This utility model is related to a kind of filter, and in particular to a kind of hydraulic transmission box testing stand uses filter online.

Background technology

Hydraulic transmission box because its gearshift is steady, the advantages of operate that less demanding, shift shock is little, be difficult flame-out, by Increasing engineering machinery vehicle is adopted.Due to there is substantial amounts of oil circuit in the casing and control valve of change speed gear box, to work More and more higher is required with the cleannes of oil.In actual use, as the cleannes of oil product are not high or casing itself is primary Pollutant are excessive, often result in oil circuit smooth, premature wear, change speed gear box is powerless, gearshift is slow, clutch premature wear etc. shows As.

To reduce primary pollution, the control of cleannes is placed on the link of delivery test for current many producers.Dispatching from the factory In process of the test, tested using the fluid of cleaning, after the completion of test, oil product is recycled after treatment or discarded.It is wherein right Recycle after oil product is processed after test, such as process bad, then secondary pollution is formed to change speed gear box easily；It is discarded then direct Cause to waste, increase production cost.In addition in process of the test, due to the fluid in circulating oil path it is relatively fewer, test oil It is difficult to the pollutant in casing have been rinsed, a large amount of pollutant are caused still to remain in change speed gear box.

Part producer has sealed in the less filter of automobile-used in-line filter isometric(al) in test cycle oil circuit, due to this The water environment capacity for planting filter is limited, and a large amount of contaminants can cause test cycle oil circuit to block, in pressure in filter surfaces When power is too high, the filter element of in-line filter is damaged in the presence of oil pressure, and now filter has reformed into polluter, to tested case Body produces pollution, forms pollution source.Such as using the filter that water environment capacity is strong, as its cavity volume is larger, easily gather Collection gas, is not suitable for this occasion.

The reason for air accumulation, it is gear structure to be primarily due to change speed gear box, in the high-speed rotation of process of the test middle gear, Constantly air can be pressed into inside oil product, form bubble, when fluid flows through filter, flow velocity slows down, bubble floating, great Liang Ju The inner cavity top of filter is combined in, as the pressure in circulating oil path is constantly raised, gas is constantly compressed.When test is completed Afterwards, in the presence of gas pressure, the test oil in circulating oil path is pushed back change speed gear box and causes change speed gear box test to spray after shutting down Oily phenomenon.In addition as the aggregation of gas, the generation of fuel injection event, the oil mass inside circulating oil path are gradually decreased, test is caused Quantitative refueling can not accurately be carried out with oil so that test data produces deviation.

So to realize that change speed gear box test oil real-time online is filtered, a kind of filtration with following ability need to be provided：One It is can timely to remove the pollutant in test oil product, reaches the effect of oil product in-line purification；Two should not produce it is excessive Pressure differential, causes test data to deform；Three because tested change speed gear box is foundry goods casing, and pollutant are more, so as to filter is necessary There are enough water environment capacities, it is to avoid frequently change filter element, reduce using consumables cost and safeguard cost of labor；Four filters should be able to It is enough to seal, can not be because of having pressure in pipeline, so as to leak during test；Five can discharge the gas in change speed gear box circulating oil path in time Body, prevents air accumulation, and causing oil product to flow back can not be quantitative with test oil；

At present existing filter is primarily due to sealing property and caused by timely degassing function is contradicted, it is impossible to realize existing Line real time filtering is lifting oil product cleannes and the cleannes by test specimen.

The content of the invention

In order to solve above-mentioned problem, this utility model provides a kind of hydraulic transmission box testing stand online with filtration , neither there is oil leak situation, and the gas of the energy interior aggregation of discharge filter in time, realize change speed gear box test oil and follow online in device Ring is filtered, the pollutant produced in can effectively intercepting primary pollutant and process of the test in tested change speed gear box, to greatest extent Improve the cleannes of dispatching from the factory of casing.

The technical solution of the utility model is：

A kind of hydraulic transmission box testing stand uses filter online, including the cartridge filter being installed on base, the cartridge filter Oil-in, oil-out are provided with, the cartridge filter includes that the primary filter cartridge being sequentially connected in series by connecting tube, middle rank are filtered Cylinder and final stage cartridge filter, the cartridge filter include cylinder and are respectively provided at cylinder top, the top cover of bottom, base plate, described fuel-displaced Mouth is opened on the side wall of cylinder, and the oil-in is opened on the base plate；The cylinder be fixedly provided with it is described enter The oil guide pipe of hydraulic fluid port connection, the periphery of the oil guide pipe is arranged with filter element, is provided with float, institute in the cylinder above oil guide pipe State, the top of the valve element is carried out by stop nut spacing after passing through top cover；Positioned at filter element The inner barrel of periphery forms gather qi together room and accumulator respectively, under fluid buoyancy, valve element is carried out up and down with float Move and gather qi together room is connected with ambient atmosphere or is closed.

Further scheme, the oil-in of the primary filter cartridge are connected with oil inlet pipe, and the oil-out of primary filter cartridge passes through Connecting tube is connected with the oil-in of intermediate cartridge filter, and the oil-out of intermediate cartridge filter is by connecting tube end in parallel with two respectively The oil-in connection of level cartridge filter, the oil-out of two final stage cartridge filters are connected with flowline；In the primary filter cartridge Filter element filtering precision is 25um, the filter element filtering precision in intermediate cartridge filter is 10um, the filter element filtering essence in final stage cartridge filter Spend for 5um.

Further scheme, the bottom of the oil guide pipe are fixed and are arranged with filter element supporting plate, and the top of oil guide pipe is installed with stud； The bottom of the filter element is fastened on filter element supporting plate, is arranged with pressing plate, above pressing plate on the stud above filter element Stud is provided with fixing nut, and by being tightened, nut is fixed on filter element between filter element supporting plate and pressing plate.

Further scheme, being equipped between the filter element supporting plate and filter element, pressing plate and filter element is carried out the two-port of filter element The sealing ring of sealing.

Further scheme, offers oil through on the side wall of the oil guide pipe.

Further scheme, the center of the top cover offer pore, positioned at top cover bottom pore side wall toward downward Stretch to form boss；The periphery of top cover equally spacedly offers several U-type grooves, is further opened with manometric for installing on top cover Installing hole；The valve element includes that the junction of screw rod and lower screw rod, the upper screw rod and lower screw rod is provided with the boss The cone sealed by chamber, the periphery of the cone are arranged with O-ring seal；Ventilating groove is offered on the upper screw rod, it is described Upper screw tip is threadedly coupled with the stop nut through after the pore, lower that screw thread company is carried out between screw rod and float Connect.

Further scheme, the top of the cylinder is installed with the top cover ring for fixing for extending outside, the top cover ring for fixing Periphery offer the notch corresponding with the U-type groove on the top cover；The outer wall top of the cylinder is installed with hinged seat, institute State, the connecting pin is rotated up around hinged seat and is stuck in notch and the top of top cover ring for fixing In the U-type groove for covering, top cover is fixed on by the top of cylinder by collar nut and is sealed.

Further scheme, the bottom of the base plate are installed with supporting leg, and the cartridge filter is fixed on base by supporting leg.

It is the pressure value for showing inner barrel that pressure gauge is arranged on top cover, so as to judge whether filter element occurs blocking Situation, so as to pinpoint the problems in time, improves the filter cleaning ability to oil product.

Filter of the present utility model is that oil product to be filtered entered primary filter cartridge by oil inlet pipe first, Jing its mistake Filter precision enters intermediate cartridge filter for Jing oil-outs after the filter element filtering of 25um, after being filtered the filter element filtering that precision is 10um Respectively enter in two final stage cartridge filters, after being filtered the filter element filtering that precision is 5um, Jing flowlines are discharged and used.Oil Product protect the performance of change speed gear box by three-level filter element filtering so as to farthest improve the cleannes of oil product.

When each cartridge filter works, the height of its work liquid level is in adaptive variable condition, and work liquid level is typically located In the middle part of float, that is, the liquid level that works above section is gather qi together room；Part accumulator below work liquid level；Work as cartridge interior There is no oil for space-time, valve element keeps hang, the cone of valve element to leave top cover under the weight effect of its deadweight and float , there is gap due to offering on upper screw rod between ventilating groove, and upper screw rod and the pore of top cover in boss so that gather qi together room with Ambient atmosphere is communicated.

Oil inlet pipe imports fluid in oil guide pipe, oil through from Oil Guide tube side wall and import, After filtration, oil product enters accumulator from filter element side wall oil-out, float is increased as the oil mass in oil storage room increases, then gathers Air in air chamber constantly passes through outside the pore outflow tube on top cover；When fluid reaches work liquid level, float is in fluid Buoyancy under promote valve element to continue to rise, the O-ring seal in the cone of valve element contacted with the boss on top cover and close Envelope, so as to block the connection with ambient atmosphere；As the continuation of work liquid level is raised, the inside and outside differential pressure increase of gather qi together room is floated The volume increase of son immersion oil product, in the presence of float with air pressure inside, the sealing property between valve element and top cover is obtained valve element To being obviously improved.

With the rising of oil pressure, the liquid level that works continues to rise, and the air pressure of gather qi together room is also increased, the oil product of cartridge interior Under the gas pressure of gather qi together room, it is pressed in next cartridge filter or change speed gear box from its oil-out, in oil storage room, liquid level declines； When liquid level drops to pressure balance point, the buoyancy of float is substantially reduced, and the active force of valve element is not enough to support valve element to continue It is retained in sealing station.Then now valve element declines under gravity, so as to open top cover air drain, the compressed gas in gather qi together room Entered in air by the pore on the ventilating groove and top cover on valve element so that the air pressure in gather qi together room and atmospheric pressure phase Deng.Then repeat above-mentioned work further to filter oil product.

So this filter can be used to filter oil product on hydraulic transmission box testing stand, neither there is oil leak situation, and energy in which The gas assembled in discharge filter in time, realizes the online circulating filtration of change speed gear box test oil, can effectively intercept tested change The pollutant produced in primary pollutant and process of the test in fast case, improve the cleannes of dispatching from the factory of casing to greatest extent.

In addition, " gather qi together " that filter of the present utility model thoroughly solves hydraulic transmission box class product testing process is asked Topic；Solve the problems, such as that hydraulic transmission box is unable to real-time online filtration, and cleannes effectively can not be protected after change speed gear box delivery test The problem of card；

The ingenious employing mechanics principle of filter of the present utility model, by the gravity of object, the buoyancy of liquid and gas pressure Organically combine, realize the automatic ventilating function of cartridge filter, solve hydraulic transmission box testing stand and filter without special real-time online The problem of device；

The consumptive material of this filter is standard filter cartridges, and buying is conveniently, it is easy to change；Filter element contamination capacity is big, reduces replacing The frequency of consumptive material, reduces the labor intensity of attendant；

This utility model is used by the series and parallel of each cartridge filter, is made the filtering traffic handling capacity of filter strong, is reduced Because of the pressure loss that filter is caused, the problem of test data " deformation " is effectively alleviated.

Description of the drawings

Below in conjunction with the accompanying drawings this utility model is described in further detail：

Fig. 1 is this utility model structural representation；

Fig. 2 is the structural representation of cartridge filter in this utility model；

Fig. 3 is the sectional view of Fig. 2；

Fig. 4 is the top view of top cover in this utility model；

Fig. 5 is the upward view of top cover in this utility model；

Fig. 6 is the structural representation of filter element in this utility model.

In figure：1- bases, 2- oil inlet pipes, 3- flowlines, 4.1- primary filter cartridges, 4.2- middle rank cartridge filters, 4.3- final stages Cartridge filter, 5- valve elements, the upper screw rods of 5.1-, 5.2- cones, screw rod under 5.3-, 5.4- ventilating grooves；6- top covers, 6.1-U type grooves, 6.2- Pore, 6.3- installing holes, 6.4- boss；7- top cover ring for fixings, 8- oil-outs, 9- cylinders, 10- base plates, 11- supporting legs, 12- are floated Son, 13- fixing nuts, 14- studs, 15- filter elements, 16- oil guide pipes, 17- filter element supporting plates, 18- hinged seats, 19- connecting pins, 20- Collar nut, 21- pressure gauges, 22- glands, 23-O type sealing rings, 24- stop nuts.

Specific embodiment

As shown in figure 1, a kind of hydraulic transmission box testing stand uses filter online, including the cartridge filter being installed on base 1, The cartridge filter is provided with oil-in, oil-out 8, and the cartridge filter includes the primary filter being sequentially connected in series by connecting tube Cylinder 4.1, intermediate cartridge filter 4.2 and final stage cartridge filter 4.3；The oil-in of the primary filter cartridge 4.1 is connected with oil inlet pipe 2, just Level cartridge filter 4.1 oil-out by connecting tube with middle rank cartridge filter 4.2 oil-in be connected, intermediate cartridge filter 4.2 it is fuel-displaced Mouthful be connected by the oil-in of connecting tube final stage cartridge filter 4.3 in parallel with two respectively, two final stage cartridge filters 4.3 it is fuel-displaced Mouth is connected with flowline 3；Filter element filtering precision in the primary filter cartridge 4.1 is 25um, the filter in intermediate cartridge filter 4.2 Core filtering accuracy is 10um, the filter element filtering precision in final stage cartridge filter 4.3 is 5um.

As shown in Figure 2,3, cartridge filter includes cylinder 9 and is respectively provided at 9 top of cylinder, the top cover 6 of bottom, base plate 10, institute State oil-out 8 to be opened on the side wall of cylinder 9, the oil-in is opened on the base plate 10；The inside of the cylinder 9 is fixed The periphery for having the oil guide pipe 16 connected with the oil-in, the oil guide pipe 16 is arranged with filter element 15, above oil guide pipe 16 Cylinder 9 in be provided with float 12, the top of the float 12 is connected with valve element 5, and the top of the valve element 5 leads to through after top cover 6 Cross stop nut 24 carry out it is spacing；Gather qi together room and accumulator, cartridge filter work are formed respectively inside the cylinder 9 of 15 periphery of filter element Work liquid level when making is typically in the middle part of float 12, then between 12 middle part of float and top cover 6 be gather qi together room, And the space below 12 middle part of float is accumulator；Under fluid buoyancy, valve element 5 is made to carry out with float 12 Lower movement and gather qi together room is connected with ambient atmosphere or is closed.

Further scheme, the bottom of the oil guide pipe 16 are fixed and are arranged with filter element supporting plate 17, and the top of oil guide pipe 16 is fixed There is stud 14；The bottom of the filter element 15 is fastened on filter element supporting plate 15, on the stud 14 above filter element 16 is arranged with pressure Plate 22, the stud 14 above pressing plate 22 are provided with fixing nut 13, and by being tightened, filter element 15 is fixed on by nut 13 Between filter element supporting plate 17 and pressing plate 22.

Further scheme, is equipped with the two of filter element between the filter element supporting plate 17 and filter element 16, pressing plate 22 and filter element 16 The sealing ring sealed by port, filter element is sealed up, and the hydraulic fluid port before making filter and after filter separates, it is to avoid its mixing.

Further scheme, offers oil through on the side wall of the oil guide pipe 16.

As shown in Figure 4,5, the center of top cover 6 offers air drain 6.2, and the side wall positioned at the pore 6.2 of 6 bottom of top cover is past Lower extension forms boss 6.4；The periphery of top cover 6 equally spacedly offers several U-type grooves 6.1, be further opened with top cover 6 for The installing hole 6.3 of pressure gauge 21 is installed；As shown in fig. 6, valve element 5 includes screw rod 5.1 and lower screw rod 5.3, the upper screw rod 5.1 The cone 5.2 sealed to 6.4 inner chamber of the boss, the periphery set of the cone 5.2 are provided with the junction of lower screw rod 5.3 It is provided with O-ring seal 23；Ventilating groove 5.4 is offered on the upper screw rod 5.1,5.1 top of upper screw rod passes through the pore It is threadedly coupled with the stop nut 24 after 6.2, is threadedly coupled between lower screw rod 5.3 and float 12.

As shown in figure 3, the top of cylinder 9 is installed with the top cover ring for fixing 7 for extending outside, the top cover ring for fixing 7 Periphery offers the notch corresponding with the U-type groove 6.1 on the top cover 6；The outer wall top of the cylinder 9 is installed with hinged seat 18, connecting pin 19 is hinged with the hinged seat 18, and the connecting pin 19 is rotated up around hinged seat 18 and is stuck in top cover admittedly Surely, in the U-type groove 6.1 on the notch and top cover 6 of circle 7, top cover 6 is fixed on by the top of cylinder 6 by collar nut 20 and is sealed （Fig. 1, end draws in 2）.

Further scheme, the bottom of the base plate 10 are installed with supporting leg 11, and the cartridge filter is fixed on bottom by supporting leg 11 On seat 1.

So filter of the present utility model on liquid level impact in oil storage room is in change speed gear box testing stand application process：

Before on-test, the fluid of inner barrel is communicated with air, and internal oil pressure is zero；During test, with testing stand Rotating speed is raised, and the work oil product that circulating oil path flows out enters cartridge filter, and in cylinder, the liquid level of accumulator is raised, and makes float drive valve Move on core, up to the pore that seal spool is lived on top cover, cylinder is completely separated with air.Cylinder continues oil-feed, and its pressure continues Raise, the air pressure of gather qi together room is raised, and after filtration, oil product is derived from its oil-out, and the liquid level in oil storage room declines, what float was provided Buoyancy reduces, valve element falls, and gather qi together room is communicated with air, the gases at high pressure inside discharge, the reduced pressure in gather qi together room；Cylinder Liquid level continues to raise in vivo, the increase of float buoyancy, promotes valve element to rise, again by poly- air chamber sealing.Above-mentioned action reciprocation cycle, So as to discharge the gas in circulating oil path in time, and can timely sealed cylinder, prevent oil product from overflowing, pollute and wave Take.

Above example is not limited only to protection domain of the present utility model, all based on basic thought of the present utility model And modify or change belong to protection domain of the present utility model.

Claims (8)

1. a kind of hydraulic transmission box testing stand uses filter online, including being installed in base（1）On cartridge filter, the cartridge filter It is provided with oil-in, oil-out（8）, the cartridge filter includes the primary filter cartridge being sequentially connected in series by connecting tube（4.1）、 Intermediate cartridge filter（4.2）With final stage cartridge filter（4.3）, it is characterised in that：The cartridge filter includes cylinder（9）Be respectively provided at cylinder Body（9）Top, the top cover of bottom（6）, base plate（10）, the oil-out（8）It is opened in cylinder（9）Side wall on, the oil-feed Mouth is opened in the base plate（10）On；The cylinder（9）Be fixedly provided with the oil guide pipe connected with the oil-in（16）, institute State oil guide pipe（16）Periphery be arranged with filter element（15）, positioned at oil guide pipe（16）The cylinder of top（9）Float is provided with inside（12）, institute State float（12）Top be connected with valve element（5）, the valve element（5）Top pass through top cover（6）Pass through stop nut afterwards（24） Carry out spacing；Positioned at filter element（15）The cylinder of periphery（9）It is internal to form gather qi together room and accumulator respectively, in fluid buoyancy Under, make valve element（5）With float（12）Move up and down and gather qi together room is connected with ambient atmosphere or is closed.

2. a kind of hydraulic transmission box testing stand according to claim 1 uses filter online, it is characterised in that：The primary Cartridge filter（4.1）Oil-in and oil inlet pipe（2）Connection, primary filter cartridge（4.1）Oil-out by connecting tube and intermediate mistake Filter cylinder（4.2）Oil-in connection, intermediate cartridge filter（4.2）Oil-out by connecting tube final stage mistake in parallel with two respectively Filter cylinder（4.3）Oil-in connection, two final stage cartridge filters（4.3）Oil-out and flowline（3）Connection；The primary mistake Filter cylinder（4.1）In filter element filtering precision be 25um, intermediate cartridge filter（4.2）In filter element filtering precision be 10um, final stage mistake Filter cylinder（4.3）In filter element filtering precision be 5um.

3. a kind of hydraulic transmission box testing stand according to claim 1 uses filter online, it is characterised in that：The Oil Guide Pipe（16）Bottom fix be arranged with filter element supporting plate（17）, oil guide pipe（16）Top be installed with stud（14）；The filter element （15）Bottom be fastened on filter element supporting plate（15）On, positioned at filter element（16）The stud of top（14）On be arranged with pressing plate（22）, position In pressing plate（22）The stud of top（14）It is provided with fixing nut（13）, by the nut that is tightened（13）By filter element（15）It is fixed In filter element supporting plate（17）And pressing plate（22）Between.

4. a kind of hydraulic transmission box testing stand according to claim 3 uses filter online, it is characterised in that：The filter element Supporting plate（17）And filter element（16）, pressing plate（22）And filter element（16）Between be equipped with filter element（16）Two-port sealed it is close Seal.

5. a kind of hydraulic transmission box testing stand according to claim 1 uses filter online, it is characterised in that：The Oil Guide Pipe（16）Side wall on offer oil through.

6. a kind of hydraulic transmission box testing stand according to claim 1 uses filter online, it is characterised in that：The top cover （6）Center offer pore（6.2）, positioned at top cover（6）The pore of bottom（6.2）Side wall down extend to form boss （6.4）；Top cover（6）Periphery equally spacedly offer several U-type grooves（6.1）, top cover（6）On be further opened with for install pressure Power table（21）Installing hole（6.3）；The valve element（5）Including upper screw rod（5.1）With lower screw rod（5.3）, the upper screw rod（5.1） With lower screw rod（5.3）Junction be provided with to the boss（6.4）The cone sealed by inner chamber（5.2）, the cone（5.2） Periphery be arranged with O-ring seal（23）；The upper screw rod（5.1）On offer ventilating groove（5.4）, the upper screw rod（5.1） Top passes through the pore（6.2）Afterwards with the stop nut（24）It is threadedly coupled, lower screw rod（5.3）And float（12）It Between be threadedly coupled.

7. a kind of hydraulic transmission box testing stand according to claim 6 uses filter online, it is characterised in that：The cylinder （9）Top be installed with the top cover ring for fixing for extending outside（7）, the top cover ring for fixing（7）Periphery offer with it is described Top cover（6）On U-type groove（6.1）Corresponding notch；The cylinder（9）Outer wall top be installed with hinged seat（18）, it is described Hinged seat（18）On be hinged with connecting pin（19）, the connecting pin（19）Around hinged seat（18）Rotate up and be stuck in top cover admittedly It is fixed to enclose（7）Notch and top cover（6）On U-type groove（6.1）In, by collar nut（20）By top cover（6）It is fixed on cylinder（6） Top and seal.

8. a kind of hydraulic transmission box testing stand according to claim 1 uses filter online, it is characterised in that：The base plate （10）Bottom be installed with supporting leg（11）, the cartridge filter is by supporting leg（11）It is fixed on base（1）On.