CN103223866A

CN103223866A - Transmission for operating machine equipped with hydraulic liquid pump

Info

Publication number: CN103223866A
Application number: CN2013100365307A
Authority: CN
Inventors: 道恩·A·尼斯多姆; 马塞洛·M·墨索伊
Original assignee: Deere and Co
Current assignee: Deere and Co
Priority date: 2008-07-07
Filing date: 2008-07-07
Publication date: 2013-07-31
Anticipated expiration: 2028-07-07
Also published as: CN103223866B

Abstract

The invention discloses a transmission assembly for an operating machine (10). The transmission assembly comprises a transmission (16) provided with a transmission casing (18), a manifold casing (20) attached to the transmission casing (18), and a hydraulic pump (22) configured and connected to the manifold casing (20).

Description

Be used to have the change-speed box of the Work machine of attaching hydraulic fluid pump

Technical field

The present invention relates to Work machine, and relate more specifically to be used for the change-speed box of such Work machine.

Background technology

Work machine such as agricultural traction engine or building trac. comprises internal combustion (IC) machine, and it is provided to change-speed box with imput power, and change-speed box is then by rear end diff and back axle coupling and driving back axle.Change-speed box, rear end diff and back axle are called as " rear end " of Work machine sometimes.

Trac. has hydraulic efficiency pressure system, and it comprises Hydraulic Pump, and this Hydraulic Pump is fed to various apply devices with pressurized hydraulic fluid.These devices comprise suspension, are connected to selection control cock (SCV), steering hardware, brake equipment and the change-speed box of hydraulic actuating cylinder, and this change-speed box comprises fluid control valve and hydrodynamic lubrication pipeline.Suspension is positioned at the rear portion of vehicle, and SCV is positioned at the middle part and the rear portion of vehicle.Some hydraulic actuating cylinders are used to be operationally connected to the instrument of vehicle rear.

These Hydraulic Pumps are generally the gear type pump form and are installed to described pump and provide on the driving engine of power.Typically, hydraulic efficiency pressure system comprises the apply device apart from the suitable distance of pump, this needs each hydraulic efficiency pressure system to connect a plurality of flexible pipes, conduit and assembly parts, and these flexible pipes, conduit and assembly parts need productive costs, potential leakage approach is provided and expend useful space on the trac..

What need in the prior art is a kind of trac. with hydraulic efficiency pressure system, this hydraulic efficiency pressure system efficient height, saves the trac. space and minimizes the exposure of hydraulic unit.

Summary of the invention

A kind of form of the present invention relates to a kind of menifold housing that is used for Work machine.Described menifold comprises outside face and a plurality of internal channel, and described outside face is configured in order to be connected to the outside face of change-speed box.Described menifold also comprises a plurality of isolated ports, and each isolated port is connected at least one in described a plurality of internal channel.

Another kind of form of the present invention relates to Work machine, it comprise driving engine and with driving engine bonded assembly rear end.Described rear end comprises the change-speed box with case of transmission, menifold housing and the Hydraulic Pump that is attached to case of transmission.Described Hydraulic Pump is configured to be connected to described menifold housing.

Description of drawings

Fig. 1 comprises that the present invention is used for the part birds-eye view of change-speed box of an embodiment of the menifold housing of agricultural traction engine;

Fig. 2 is the partial perspective view of cut-away section of the change-speed box of Fig. 1;

Fig. 3 is the part block diagram of the change-speed box of Fig. 1, and it illustrates the pump gear of the interior Hydraulic Pump that is used for being contained in the menifold housing;

Fig. 4 is the partial perspective view of cut-away section of the change-speed box of Fig. 1, and it illustrates in greater detail the gearbox output gear;

Fig. 5 is the block diagram of menifold housing of the change-speed box of Fig. 1, and it illustrates in greater detail the front portion of menifold housing;

Fig. 6 is the block diagram of semi-sictional view of menifold housing of the change-speed box of Fig. 1, and it is shown in further detail the attaching parts that is used for filter cartridge; And

Fig. 7 is the block diagram of menifold housing of the change-speed box of Fig. 5, and it illustrates in greater detail the rear portion of menifold housing.

The specific embodiment

According to the present invention and with reference to figure 1, Work machine 10 is shown.Work machine 10 comprises that driving engine 12(illustrates to simplify box form) and the rear end 14(that is coupled to driving engine 12 partly illustrate).Work machine 10 for example can be the form of agricultural traction engine or construction vehicle.Rear end 14 comprises the change-speed box 16 with case of transmission 18.The rear end also comprises menifold housing 20 that is attached to case of transmission 18 and the Hydraulic Pump 22 that is connected to menifold housing 20.

Also illustrate among Fig. 1, Work machine 10 also comprises filter cartridge 24.Filter cartridge 24 is used for the hydraulic fluid that the hydraulic fluid system of filtration operation machinery 10 may pollute.As shown in Figure 1, menifold housing 20 comprises the outside face 26 that is used to admit filter cartridge 24.Filter cartridge 24 comprises the housing that holds hydraulic fluid with outside face 26 cooperations of menifold housing therein.Filter cartridge 24 with such structure does not need independent filter cap to lead to the filter in the box.The Hydraulic Pump 22 of Work machine 10 is interior Hydraulic Pumps.Interior Hydraulic Pump 22 is placed in the menifold housing 20.

Hydraulic Pump 22 can be fed to pressurized hydraulic fluid each apply device (not shown), such as brake system, change-speed box, steering swivel system, suspension (such as the trifilar suspension that is used for agricultural traction engine) and the selection control cock (SCV) that is connected to hydraulic actuating cylinder.Work machine 10 also comprises second Hydraulic Pump of near-end Hydraulic Pump 28 forms, and its outside face 30 at menifold housing 20 is connected to menifold housing 20.Work machine 10 also comprises the 3rd Hydraulic Pump of far-end Hydraulic Pump 32 forms that are attached to the outer Hydraulic Pump 28 of near-end.Near-end Hydraulic Pump 28 and far-end Hydraulic Pump 32 can be the Hydraulic Pumps of any type, for example can be vane pump or gear type pump.Typically, near-end Hydraulic Pump 28 and far-end Hydraulic Pump 32 are gear type pumps.

With reference now to Fig. 2,, menifold housing 20 comprises a plurality of interior conduits 34 and a plurality of isolated external port 36.In a plurality of isolated external port 36 each is connected at least one in a plurality of internal channels 34.Passage 34 and port 36 are used for flow of hydraulic fluid is directed into

pump

22,28 and 32 and direct into filter cartridge 24 from

pump

22,28 and 32 from filter cartridge 24.For example, as shown in Figure 2, menifold housing 20 comprises first internal channel 38 that extends to filter inner port 42 from SCV return port 40.The menifold housing also comprises second internal channel 44 that extends to interior pump discharge 48 from filter outlet 46.

As shown in Figure 2, interior Hydraulic Pump 22 is gear type pump forms, and is positioned at second internal channel 44 of menifold housing 20.Interior Hydraulic Pump 22 is driven by change-speed box 16.Change-speed box 16 comprises the input gear 50 that drives output gear 52.Output gear 52 axis 54 rotations longitudinally.As shown in Figure 2, interior Hydraulic Pump 22 comprises output or driven wheel 56 and driven gear 58.To hold hydraulic fluid, this hydraulic fluid also is used as the direct lubricant of the bearing 59 of the driven wheel 56 that supports interior Hydraulic Pump 22 to internal channel 44 as hydraulic accumulator.Similar bearing (not shown) can support in Hydraulic Pump 22 driven gear 58 and can be lubricated similarly.Therefore, Hydraulic Pump input gear 56 is around longitudinal axis 54 rotations of the output gear 52 of change-speed box 16.Hydraulic Pump 22 provides the Hydraulic Pump that minimizes the space in the rear end 14 and has more approached hydraulic power demand parts in using, for example, and change-speed box 16, and the pump of location.

In addition and as shown in Figure 2, interior Hydraulic Pump 22 also is used for power is delivered to near-end Hydraulic Pump 28 from change-speed box 16.The driven wheel 56 of interior Hydraulic Pump 22 comprises the input shaft 62 ingear female spliness 60 with near-end Hydraulic Pump 28.Therefore, input gear 62 is around longitudinal axis 54 rotations of the output gear 52 of change-speed box 16.Like this, interior Hydraulic Pump is also as the coupler between the input shaft 62 of axle on the output gear 52 of change-speed box 16 and near-end Hydraulic Pump 28.Interior Hydraulic Pump 22 is as the dual-use conserve space and the cost of pump and coupler.

As shown in Figure 2, rear end 14 also comprises the 3rd pump or the outer pump 32 of far-end.The outer pump 32 of far-end is installed to the outer pump 28 of near-end.Near-end Hydraulic Pump 28 comprises the male splines 70 ingear female spliness 68 on the input shaft 72 with far-end pump 68.Outer pump 32 of far-end and the outer pump 28 of near-end can be used for pressurized hydraulic fluid is provided to one or more apply devices, such as brake system, change-speed box, steering swivel system, suspension and a plurality of SCV.Because suspension and SCV are positioned at the rear portion of trac. at least, than being installed to existing pump on the driving engine more by the pump 28 of position, back with 32 position causes trac. to have still less or shorter hydraulic hose and conduit and hydraulic pressure assembly parts still less.

With reference to figure 3,4 and 5, pump driver gear 56 that illustrates and pump driven gear 58 are arranged in the internal channel 44 of menifold housing 20, with Hydraulic Pump 22 in forming.Interior Hydraulic Pump 22 is connected to near-end Hydraulic Pump 28 by internal channel, and near-end Hydraulic Pump 28 is connected to far-end Hydraulic Pump 32 by internal channel again.

Hydraulic Pump

22,28 and 32 uses shared inlet thus.Three

Hydraulic Pumps

22,28 and 32 shared inlet provide pump to be interconnected by hydraulic pressure.Three

Hydraulic Pumps

22,28 and 32 utilize the shared suction part of forming internal channels, therefore, do not need outside pipe arrangement so that the suction part to be provided.Do not need the outside pipe arrangement that sucks to reduce the probability of component count and leakage and saved space and cost on three

Hydraulic Pumps

22,28 and 32.Like this, inject problem for priming of pump, all

hydraulic pump

22,28 and 32 is helped each other.Shared inlet allows all

hydraulic pump

22,28 and 32 to be connected to shared storage tank 88.In addition, the fluid in these

pumps

22,28 and 32 can be filtered by same filter (that is, strum box 24).Such pump structure is also very compact, compares with existing design, and it uses trac. space and still less and simple components still less.

Refer again to Fig. 2, illustrate in greater detail filter cartridge 24.As shown in Figure 2, filter cartridge 24 comprises housing 78, the outside thread 82 ingear negative threads 80 that form on its qualification and the menifold housing 20.Filter cartridge 24 also comprises and returns filter cell 84 and suck flow elernent 85.The hydraulic fluid that is used for three

pumps

22,28 and 32 is supplied by filter cartridge 24 from the storage tank port 86 of the storage tank 88 of change-speed box 16.Through storage tank port 86, enter the inwall 90 of filter cartridge 24 and the passage 89 that returns between the filter cell 84 from the hydraulic fluid of storage tank 88,, enter second internal channel 44 of menifold housing 20 then by returning filter cell 84, passing through port 46.

Return port 40 from the hydraulic return fluid of carrying out hydraulic actuating cylinder etc. from SCV,, arrive filter inlet 42 through internal channel 38, through filter cartridge 24 return filter cell 84, by filter outlet 46, arrive second internal channel 44 of menifold housing 20 then.SCV returns the exposed to contact outside that port 40 is positioned at menifold housing 20.Equally, the port on near-end Hydraulic Pump 28 and the far-end Hydraulic Pump 32 is positioned at the exposed to contact outside of pump 28 and 32.It may be the structure of the complicated hydraulic assembly parts of necessary 90 crooked assembly parts of degree and " T " adaptor union that the position that SCV returns the port of port 40 and

pump

28 and 32 provides the engine installation of avoiding comprising existing Hydraulic Pump.The hydraulic fluid that is used for these three

pumps

22,28 and 32 returns port 40 supplies from storage tank 88 and from SCV thus.Filter cartridge 24 filtrations are returned port 40 from SCV and are fed to the fluid of

pump

22,28 and 32 and the fluid that is fed to pump 22,28 and 32 from storage tank 88.

Filter cartridge 24 is installed on the menifold housing 20, and menifold housing 20 is installed on the change-speed box 16.Menifold housing 20 comprise be used for change-speed box 16 in the storage tank port 86 that is communicated with of storage tank 88 fluids.When change-speed box 16 does not move, the fluid in it will be discharged into storage tank 88 in the case of transmission 18 by storage tank port 86.Filter cartridge 24 is so located with respect to change-speed box 16, menifold housing 20 and storage tank 88, make when change-speed box does not move, most of hydraulic fluids in the filter cartridge 24 will flow to storage tank 88 by menifold housing 22 from filter cartridge 24, make that filter cartridge 24 can be totally and remove effectively and change.

With reference now to Fig. 2,5,6 and 7,, is shown in further detail port and passage that the path is provided for the fluid from menifold housing 20, filter cartridge 24 and storage tank 88.When the driving engine 12 of operation machinery 10 did not move, change-speed box 16 did not rotate and pump 22,28 and 32 does not rotate.When pump 22,28 and 32 did not rotate, fluid no longer pressurizeed and fluid is discharged by gravity.Filter cartridge 24 horizontal settings allow the fluid in the box 24 to be discharged in the menifold housing 20.Fluid in the menifold housing can be discharged in the storage tank 88.The flow that is discharged into menifold housing 20 and is discharged into menifold housing 20 from box 24 from

pump

22,28 and 32 flowing opposite recited above during usually with

pump

22,28 and 32 rotations.Filter cartridge 24 is discharged when pump does not rotate, and can remove and change then.

Though described preferred embodiment, clearly under the situation that does not break away from the scope that claim of the present invention advocates, can make various modifications.

Claims

1. menifold housing that is used for Work machine comprises:

One outside face, it is configured to be connected to an outside face of a change-speed box;

A plurality of internal channels; And

A plurality of isolated ports, each in described a plurality of isolated ports is connected at least one in described a plurality of internal channel.

2. menifold housing according to claim 1, wherein, described menifold housing also comprises one second outside face, it is configured to admit a Hydraulic Pump.

3. menifold housing according to claim 1, wherein, described menifold housing also comprises one second outside face, it is configured to admit a filter cartridge.

4. menifold housing according to claim 1:

Wherein said menifold housing also limits a cavity; And

Also comprise a Hydraulic Pump, described Hydraulic Pump comprises at least two gears, and described at least two gears are configured with in the described cavity that is positioned described menifold housing.