DE102014001839A1 - Pump drive device for a work machine - Google Patents

Abstract

A pump drive device (60) for a work machine is disclosed. The pump drive device has a pump drive housing rigidly attached to a main frame (12) of the work machine. A transmission (74) disposed in the pump drive housing (62) is for splitting a mechanical output of the internal combustion engine (26) received at an input (66) of the pump drive housing (62) to at least one of a main drive component (28) of a work tool (21) Hydraulic pump (72) is formed. Provided on the pump drive housing (62) is a mounting portion (64) to which the internal combustion engine (26) is at least partially attached such that the internal combustion engine (26) is attached to the main frame (12) of the work machine via the pump drive housing (62). Thus, the main drive component (28) of the working tool (21) via the pump drive housing (62) of movements of the internal combustion engine (26) is decoupled.

Description

Technical area

The present disclosure relates generally to a work machine, more particularly to a pump drive apparatus for such work machine.

Background of the invention

Machines such as cold planers, crushers, and other work machines typically perform a variety of work related to industries such as mining, construction, agriculture, or the like. Work tools associated with these machines can be used for a variety of tasks, including, for example, material removal, work surface straightening, and the like, and include, for example, cutting tools, shearing tools, knives, crushers / hammers, augers, and other tools utilizing mechanical power, which is generated by an internal combustion engine or the like, operated. For example, cold planers include a rotor that is provided with cutting tools and that can be driven via a belt drive system.

These work tools are often directly connected to a main frame of the work machine. This provides a secure connection of the work tool to the main frame of the work machine so that undesirable movements of the work tool during operation can be reduced or eliminated. Further, the internal combustion engine that drives the work tool is also usually attached to the main frame of the work machine, and a suitable mechanical drive system connects the internal combustion engine with the work tool.

In addition to the work tool, the engine often also supplies a portion of the output power of one or more hydraulic pumps generated thereby for supplying hydraulic fluid to various hydraulic systems on the work machine.

To divide the mechanical output power of the internal combustion engine usually a transmission is used which connects via one or more clutches an output of the internal combustion engine with an input of the drive for the working tool and / or an input of the one or more hydraulic pumps.

The disclosed pump drive apparatus is aimed, at least in part, to improve one or more aspects of known systems.

Summary

In one aspect, the present disclosure relates to a pump drive apparatus for a work machine. The pump drive device includes a pump drive housing configured to be attached to a main frame of the work machine. Further, the pump driving device includes an input adapted to engage an output of an internal combustion engine of the work machine, a main drive output adapted to engage a main drive component of the work machine, a pump drive output adapted to engage an input of at least one pump, and a transmission disposed in the pump drive housing and configured to distribute an engine mechanical output received at the input to at least the main drive output or the pump drive output. Further, a mounting portion is provided on the pump drive housing, which is adapted to at least partially support the internal combustion engine such that the internal combustion engine via the pump drive housing to the main frame can be fastened.

In another aspect, the present disclosure relates to a work machine having a main frame, a pump drive device and an internal combustion engine. The pump drive device includes a pump drive housing adapted to be attached to the main frame of the work machine. Further, the pump drive device includes an input adapted to engage an output of the engine of the work machine, a main drive output adapted to engage a main drive component of the work machine, a pump drive output adapted to engage an input of at least one pump, and a transmission disposed in the pump drive housing and configured to distribute an engine mechanical output received at the input to at least the main drive output or the pump drive output. Further, a mounting portion is provided on the pump drive housing, which is adapted to at least partially support the internal combustion engine such that the internal combustion engine via the pump drive housing to the main frame can be fastened. The pump drive housing of the pump drive device is attached to the main frame. The internal combustion engine is at one end to the pump drive housing of Attached pump drive device, so that the internal combustion engine is at least partially supported by the pump drive housing and is attached to the main frame via the pump drive housing.

Other features and aspects of this disclosure will become apparent from the following description and the accompanying drawings.

Brief description of the drawings

1 FIG. 2 is a schematic representation of an exemplary disclosed work machine; FIG.

2 FIG. 12 is a schematic diagram of an exemplary disclosed pump drive apparatus; FIG.

3A and 3B FIG. 4 are respectively a front perspective view and a rear perspective view of an exemplary disclosed pump drive housing; and FIG

4 is a partial perspective view of one of the pump drive housing of 3A and 3B attached internal combustion engine.

Detailed description

The following description is a detailed description of exemplary embodiments of the present disclosure. The exemplary embodiments described herein and illustrated in the drawings are intended to teach the principles of the present disclosure and to enable those skilled in the art to practice and utilize the present disclosure in a variety of environments and for various applications. Other features and aspects of this disclosure will become apparent to those skilled in the art from the following description and the accompanying drawings. Therefore, the exemplary embodiments are not intended to limit the scope of the present disclosure. Rather, the scope of the present disclosure is defined by the appended claims.

The present disclosure is at least partially based on the idea that when using a transmission for transmitting mechanical power of an internal combustion engine to a hydraulic pump, which is part of the hydraulic system of a work machine, and to a drive system for a working tool of the work machine, the flywheel end of the internal combustion engine such manner must be fixed on the machine, that tight tolerances between the flywheel of the engine and an input of the transmission housing are met. This can be achieved, for example, by fastening the flywheel end of the internal combustion engine directly to the transmission housing.

Further, the present disclosure is at least in part based on the idea that a coupling provided between the transmission and a drive system of the working tool should have a fixed position with respect to the drive of the working tool so that impacts, vibrations and the like picked up by the working tool , are not transmitted via the clutch to an output member of the internal combustion engine. Conversely, movements of the internal combustion engine should not lead to influencing the drive system for the working tool. To this end, according to exemplary embodiments of the present disclosure, a corresponding clutch may be rigidly mounted to the transmission housing, which in turn is rigidly connected to a main frame of the work machine.

Further, the present disclosure is at least in part based on the idea that a possibly provided exhaust treatment system should be decoupled from the internal combustion engine and that the internal combustion engine should also be decoupled from the main frame of the working machine or an operator station carried on this main frame. According to exemplary embodiments, this can be accomplished by attaching the exhaust treatment device directly to the transmission housing, and attaching the internal combustion engine to the transmission housing and the main frame of the work machine via, for example, elastic bearings.

Hereinafter, a cold planer as an exemplary work machine equipped with a pump driving device disclosed herein will be described with reference to the accompanying drawings.

1 shows an exemplary work machine 10 with multiple systems and components that work together to do a job. The working machine 10 may be a stationary or a mobile machine that performs work related to a trade such as road construction, mining, construction, agriculture or any other known trade. For example, the work machine may be a cold planer, as in 1 is shown. Alternatively, the work machine could 10 a crusher, a harvester, or other similar machine having a working tool driven by a belt drive or the like.

In the 1 illustrated work machine 10 contains a main frame 12 Being for a move on a desktop 24 from a pair of front chain assemblies 14 and a pair of rear chain assemblies 16 will be carried. The main frame 12 is for example by means of hydraulically operated, adjustable supports 18 . 20 that is between each pair of chain arrangements 14 . 16 and the main frame 12 extend, on the chain arrangements 14 . 16 carried. hydraulic cylinders 19 . 23 are used to raise and lower the work machine 10 used.

A work tool 21 For example, a rotor with cutting tools is rotatable on the main frame 12 attached and has a housing 22 on, except for the part that faces the work surface 24 exposed, the body of the working tool 21 surrounds. The depth of penetration of the cutting teeth (not shown) of the working tool 21 is achieved by suitable extension or retraction of the adjustable supports 18 . 20 and hydraulic cylinders 19 . 23 controlled.

The working machine 10 also includes an internal combustion engine 26 as a power source, which is the working tool 21 can drive via a mechanical drive assembly, designed as rollers main drive components 28 . 30 , a belt 32 and a belt tensioner 34 contains. The internal combustion engine 26 can via a pump drive device 60 (please refer 2 ) with the main drive component 28 the belt drive for the work tool 21 be connected. It is obvious to those skilled in the art that the internal combustion engine 26 For example, it may be a diesel engine, a gasoline engine, a gas fueled engine, or any other known internal combustion engine used to power the work machine 10 and the working tool 21 is operable. It is contemplated that, alternatively or additionally, a non-combustible power source may be used, such as a fuel cell, a power storage device (eg, a battery), or another known power source. The internal combustion engine 26 can generate a mechanical output, which then by means of the pump drive device 60 as a mechanical power for driving the work tool 21 and a pump 72 (please refer 2 ) and optionally other components can be delivered. It will also be apparent to those skilled in the art that mechanical arrangements other than those described in U.S. Pat 1 shown can be used to work tool 21 drive.

The working machine 10 also includes a conveyor 36 , the debris and the like to a discharger 38 promoted. The unloading device 38 and the associated frame (not shown) are from a telescopic arm 40 carried.

In addition, the work machine contains 10 a control console 42 , The control console 42 may include various input devices and displays that may be in communication with a motor controller (not shown), such as an ECM.

The control console 42 can via the (not shown) control with the internal combustion engine 26 and the pump drive device 60 keep in touch. The controller can also work with the work tool 21 , several sensors, such as tilt sensors, various components of the hydraulic system of the working machine 10 and the like.

Referring to the 2 is an exemplary embodiment of the pump drive device 60 shown in more detail. As in 2 shown is the pump drive device 60 between the internal combustion engine 26 and the main drive component 28 for the work tool 21 arranged. The pump drive device 60 has a pump drive housing 62 , an entrance 66 , a main drive output 68 and a pump drive output 70 on. The pump drive housing 26 is on the main frame 12 the working machine 10 (please refer 1 ) attached. According to an exemplary embodiment, the attachment of the pump drive housing 62 on the main frame 12 via a fastening element 93 via which the pump drive housing 62 rigid with the main frame 12 connected is. For example, the pump drive housing 62 about screws firmly with the main frame 12 be connected.

The entrance 66 , which may include, for example, an input shaft, is via a flexible coupling 94 with an output component 29 , For example, a flywheel, an output 27 the internal combustion engine 26 , connected, so that an output shaft of the internal combustion engine 26 and the input shaft of the pump drive device 60 about a common axis 100 rotate. It is understood that in other embodiments, the output shaft of the internal combustion engine 26 and the input shaft of the pump drive device 60 no common axis 100 can have. In an exemplary embodiment, the elastic or flexible connection 94 fixed to the output component 29 connected, for example, flanged to this, and on the input shaft of the pump drive device 60 arranged. In this way, the rotation of the output shaft of the internal combustion engine 26 on the input shaft of the pump drive device 60 be transferred, so that one mechanical output of the internal combustion engine 26 at the entrance 66 the pump drive device 60 Will be received. The elastic connection is used 94 for damping and for compensating movements of the internal combustion engine 26 relative to the pump drive housing 62 ,

In the pump drive housing 62 can a gearbox 74 may be arranged, which may be any type of known transmission, such as a spur gear or the like. The gear 74 transmits a rotation of the input shaft of the pump drive device 60 to an output shaft or an output 68 standing on one of the internal combustion engine 26 opposite side of the pump drive housing 62 is provided. In some embodiments, the input may be 66 via a continuous shaft with the main drive output 68 be connected. In the exemplary embodiment in FIG 2 includes the main drive output 68 one fixed to the pump drive housing 62 mounted coupling 96 , For example, a clutch. In other embodiments, the clutch 96 a fluid coupling or hydrodynamic coupling, the one in the pump drive housing 62 provided shift clutch (not shown) is connected upstream, so that the transmission of the mechanical output power of the internal combustion engine 26 on the main drive component 28 can be interrupted. About engaging or disengaging the clutch 96 can be the main engine component 28 for the work tool 21 selectively mechanical output from the engine 26 received and the work tool 21 over the belt 32 , the main propulsion component 30 and other components, such as another coupling 33 and a wave 35 that is about an axis 102 turns, drive.

The pump drive output 70 For example, a shaft connected to the gearbox 74 connected, drives one or more hydraulic pumps 72 which are adapted to pressurize a hydraulic fluid and pressurized hydraulic fluid to various hydraulic components (for example, hydraulic motors for driving the chain assemblies 14 . 16 , the hydraulic cylinders 19 . 23 , etc.) to deliver. Even if in 2 only a hydraulic pump 72 It is understood that further hydraulic pumps are provided by the pump drive device 60 can be driven (see also 3A and 3B ).

The internal combustion engine 26 is at the flywheel end 26a over an elastic bearing 92 on a mounting section 64 the pump drive housing 62 attached, which is described in more detail below. The other end of the internal combustion engine 26 can be attached to the main frame in a conventional manner 12 the working machine 10 be attached, for example, via a warehouse 91 , In some embodiments, the bearings 91 . 92 an elastic storage, for example using rubber elements include.

On the pump drive housing 62 may on an upper side an exhaust treatment device 90 be mounted, which is described in more detail below.

Now, referring to the 3A and 3B the pump drive device 60 described in more detail. As in the 3A and 3B shown, the pump drive housing 62 a first side surface 62a in the installed state of the internal combustion engine 26 is facing (see 2 ), a second side surface provided on the opposite side 62b , the main propulsion component 28 for the work tool 21 facing one between the first and second side surfaces 62a . 62b arranged upper surface 62c and a floor area 62d on.

Referring to 3A is on the second side surface 62b the coupling 96 fixed to the pump drive housing 62 connected. The main drive component 28 is on a housing of the coupling 96 attached, leaving the main drive component 28 concerning the clutch 96 and the pump drive housing 62 has a fixed positional relationship. In some embodiments, at least a portion of the housing may be the coupling 96 integral with the pump drive housing 62 be educated. Additionally or alternatively, at least a portion of the housing of the clutch 96 to the pump drive housing 62 be flanged.

Further, on the second side surface 62b another pump drive output 69 provided, which is designed to engage with an input of a (not shown) further hydraulic pump and the transmission 74 (please refer 2 ) with the entrance 66 the pump drive device 60 connected is. The pump drive outputs 69 . 70 may each be connected via a (not shown) coupling with the corresponding hydraulic pumps, but may also be in constant engagement with the inputs thereof, so that during operation of the internal combustion engine 26 the hydraulic pumps are always operated.

On the first side surface 62a the pump drive housing 62 is a flexible coupling or connection 94 provided with the entrance 66 the pump drive device 60 connected is. The connection 94 is in the installed state with the output component 29 , For example, the flywheel, the internal combustion engine 26 connected, for example via suitable Fastening sections flanged to this. Thus, the flexible connection rotates 94 with the output component 29 the internal combustion engine 26 with, so that the mechanical output of the internal combustion engine 26 in the entrance 66 the pump drive device 60 is entered. The flexible coupling or connection 94 can a movement of the internal combustion engine 26 regarding the rigidly on the main frame 12 attached pump drive housing 62 compensate. In contrast, the on the pump drive housing 62 attached coupling 96 fixed to the main drive component 28 for the work tool 21 connected.

On the first side surface 62a are, as in 3B shown, the pump drive output 70 and another pump drive output 71 provided, each with the pump 72 or another, not shown pump are connected. Also the pump 70 and the other pump can either be via a clutch or fixed to the pump drive output 70 and the other pump drive output 71 be connected so that they always or selectively by the mechanical output power of the internal combustion engine 26 are driven.

Further, on the first side surface 62a the pump drive housing 62 a mounting section 64 provided, on which the internal combustion engine can be secured in a suitable manner. It is understood that, although in the exemplary disclosed embodiment, the mounting portion 64 on the first side surface 62a is provided, this may also be provided on other surfaces of the pump drive housing, for example, the upper surface 62c ,

In the exemplary embodiment described herein, the mounting portion is 64 as a pair of profile beams 82a . 82b formed in a vertical direction on the first side surface 62a extend. On the upper side have the profile support 82a each storage space 76a . 76b on, the corresponding fasteners 78a . 78b (please refer 4 ), with the internal combustion engine 26 connected, are adapted. On the storage areas 76a . 76b can the fasteners 78a . 78b the internal combustion engine 26 be secured in a suitable manner, for example on the in 2 shown elastic bearing, which may include rubber rings and / or other elastic elements. Over in the storage areas 76a . 76b and the fasteners 78a . 78b trained holes can be the fasteners 78a . 78b suitably on the pump drive housing 62 be attached. At its lower end have the profile support 82a . 82b Pump drive mounting portions 83a . 83b on, by means of which the pump drive housing 62 on the main frame 12 can be fixed, for example, by being screwed to this.

Furthermore, the floor surface 62d a guide section 84 on, for example, a recess for engagement with the main frame 12 for example one with the main frame 12 connected cross member, is formed. By means of the pump drive attachment sections 83a . 83b and the guide section 84 can the pump drive housing 62 safe and rigid on the main frame 12 be fastened, the attachment by means of in 2 shown fasteners 93 can be done.

In the in the 3A and 3B Shown embodiment, the bearing surfaces 76a . 76b each at one of protrusions 80a . 80b formed by the first side surface 62a the pump drive housing 62 protrude on the entrance 66 is provided. In the exemplary disclosed embodiment, the input is 66 between the two protrusions 80a . 80b or between the two profile beams 82a . 82b intended. It is understood, however, that other arrangements are possible.

As in 3A and 3B shown on the pump drive housing 62 holding portions 112 be provided with which holding elements 114 may be temporarily connected to the pump drive housing 62 can be attached to the transport or assembly of the pump drive housing 62 to facilitate. After installing the pump drive housing 62 can the holding sections 114 , which may for example comprise eyelets or the like, from the pump drive housing 62 be removed.

Furthermore, the pump drive housing 62 on the upper surface 62c an additional mounting section 88 on, in the in the 3A . 3B shown exemplary embodiment may be formed as a pair of bearing surfaces. At the additional mounting section 88 can one to the internal combustion engine 26 associated exhaust treatment device 90 at least partially fastened. The exhaust treatment device 90 (please refer 2 ) may thus have a fixed positional relationship with the pump drive housing 62 have, and due to the attachment of the internal combustion engine 26 on the pump drive housing 62 also with low tolerances with respect to the internal combustion engine 26 be positioned.

Industrial Applicability

The disclosed pump drive apparatus may be applied to any work machine including a plurality of hydraulic components, and wherein a mechanical output of an internal combustion engine is distributed via a transfer case to one or more hydraulic pumps and a main drive component for a work tool.

The disclosed pump drive apparatus can improve performance and reliability of the work machine by decoupling the main drive component of the work tool from motions of the internal combustion engine, and vice versa. Thus, a correct alignment of the main drive components for the work tool is always maintained because the main drive component for the work tool is also rigidly attached to the main frame of the work machine via the rigidly attached to the main frame of the work machine pump drive housing. Movements of the internal combustion engine 26 be about the elastic attachment of the same to the pump drive housing 62 balanced, due to the nature of the attachment low tolerances between the flywheel of the engine 26 and the input shaft of the pump drive device can be ensured.

For work machines that must comply with certain emissions regulations, such as the Tier 4 regulations in the USA, an exhaust treatment system may be attached to the pump drive housing that is also fixed relative to the main frame of the work machine via the pump drive housing. This exhaust treatment system can thus be isolated from the internal combustion engine, and the movement of the internal combustion engine with respect to the exhaust treatment system can be kept within desired tolerances, since this is also attached to the pump drive housing. The same applies to the arrangement of the flywheel of the internal combustion engine with respect to the input of the pump drive device. In this way, the performance of the work machine as a whole can be improved because according to the present disclosure, the pump drive housing is fixedly connected to the main frame of the work machine and the internal combustion engine is at least partially attached to the pump drive housing via elastic bearings.

It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed pump drive apparatus. Other embodiments will be apparent to those skilled in the art upon consideration of the description and application of the disclosed pump drive apparatus. The description and examples are merely exemplary, the scope of protection being indicated by the following claims.

Claims (12)

Pump drive device ( 60 ) for a work machine ( 10 ), comprising: a pump drive housing ( 62 ), which is adapted to a main frame ( 12 ) of the working machine ( 10 ) to be fastened; an entrance ( 66 ) which is to be engaged with an output ( 27 ) an internal combustion engine ( 26 ) of the working machine ( 10 ) is trained; a main drive output ( 68 ) for engagement with a main drive component ( 28 ) of the working machine ( 10 ) is trained; a pump drive output ( 70 ) for engagement with an input of at least one pump ( 72 ) is trained; one in the pump drive housing ( 62 ) arranged gear ( 74 ), which is used to distribute one at the entrance ( 66 ) received mechanical output power of the internal combustion engine ( 26 ) to at least the main drive output ( 68 ) or the pump drive output ( 70 ) is trained; and one on the pump drive housing ( 62 ) provided mounting section ( 64 ), which is adapted to the internal combustion engine ( 26 ) at least partially such that the internal combustion engine ( 26 ) via the pump drive housing ( 62 ) on the main frame ( 12 ) is attachable. A pump drive apparatus according to claim 1, wherein said mounting portion ( 64 ) at least one pair of substantially horizontally extending bearing surfaces ( 76a . 76b ) for carrying at least one pair of corresponding ones, with the internal combustion engine ( 26 ) connected fastening sections ( 78a . 78b ) are formed. A pump drive apparatus according to claim 2, wherein the pair of bearing surfaces ( 76a . 76b ) on a pair of projections ( 80a . 80b ) formed by a first side surface ( 62a ) of the pump drive housing ( 62 ) on which the entrance ( 66 ) is provided. A pump driving apparatus according to claim 3, wherein said pair of protrusions ( 80a . 80b ) of a pair of straps ( 82a . 82 ) which extends in the vertical direction on the first side surface ( 62a ). A pump drive device according to claim 4, wherein the pair of supports ( 82a . 82b ) a pump drive attachment portion (FIG. 83a . 83b ), which is adapted to the pump drive housing ( 62 ) on the main frame ( 12 ) to fix. A pump drive device according to claim 4 or 5, wherein the pair of supports ( 82a . 82b ) is formed as a pair of profiled beams that extend to the side facing the first side surface ( 62a ) is facing away, are open. Pump drive device according to one of the preceding claims, in which the pump drive housing ( 62 ) on a lower side ( 62c ) thereof a guide section ( 84 ), which is adapted to, when mounting the pump drive housing ( 62 ) on the main frame ( 12 ) to lead this at least partially. Pump drive device according to one of the preceding claims, in which the pump drive housing ( 62 ) further comprises an additional mounting section ( 88 ), which is designed so that one to the internal combustion engine ( 26 ) belonging exhaust treatment device ( 90 ) at least partially on the pump drive housing ( 62 ) is attachable. Pump drive device according to one of the preceding claims, in which the input ( 66 ) a flexible connection ( 94 ), which is adapted to be equipped with an output component ( 29 ) of the internal combustion engine ( 26 ) and the main drive output ( 68 ) one rigid with the pump drive housing ( 62 ) connected coupling ( 96 ), which is adapted to be connected to the main drive component ( 28 ) of the working machine ( 10 ) to be connected. Working machine ( 10 ) with: a main frame ( 12 ); a pump drive device ( 60 ) according to one of claims 1 to 9, the pump drive housing ( 62 ) on the main frame ( 12 ) is attached; and an internal combustion engine ( 26 ), which at one end ( 26a ) on the pump drive housing ( 62 ) of the pump drive device ( 60 ), so that the internal combustion engine ( 26 ) at least partially from the pump drive housing ( 62 ) and via the pump drive housing ( 62 ) on the main frame ( 12 ) is attached. Work machine according to claim 10, wherein the pump drive housing ( 62 ) rigidly on the main frame ( 12 ) is attached and one end ( 26a ) of the internal combustion engine ( 26 ) via an elastic bearing ( 92 ) on the pump drive housing ( 62 ) is attached. Work machine according to claim 10 or 11, further comprising an exhaust gas treatment device ( 90 ) which at least partially on the pump drive housing ( 62 ) is attached.

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