CN102995693B - Engineering machinery - Google Patents
Engineering machinery Download PDFInfo
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- CN102995693B CN102995693B CN201210348899.7A CN201210348899A CN102995693B CN 102995693 B CN102995693 B CN 102995693B CN 201210348899 A CN201210348899 A CN 201210348899A CN 102995693 B CN102995693 B CN 102995693B
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- oil tank
- operating oil
- control valve
- upper frame
- hydro
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Abstract
The present invention provides a kind of engineering machinery. It comprises lower running body, upper rotation and operation auxiliary equipment. Upper rotation has upper frame, be arranged at the left side of the front portion of this upper frame or the wheel house of right part and be formed in the engine room at the rear portion of upper frame. Engine room arranges engine and is arranged in the both ends, left and right of this engine and the hydro-pump of the end of described wheel house same side. The front of engine room and in the lateral direction part with wheel house opposition side be provided with the device space, this device space arranges operating oil tank and control valve. Operating oil tank be arranged at than control valve rearward side and on the width of upper frame than control valve position in the inner part, this operating oil tank is connected by tail pipe with described hydro-pump. Thus, when the side opposite each other that hydro-pump and operating oil tank are arranged on direction, upper frame left and right respectively, it is possible to make the length of their tail pipe of connection short.
Description
Technical field
The present invention relates to the engineering machinery such as excavator, this engineering machinery comprises the upper rotation with upper frame, and arranges hydro-pump, operating oil tank and control valve in this upper rotation.
Background technology
The background technology of the present invention is described for the excavator shown in Fig. 3. This excavator comprises the lower running body 1 of track type, can be equipped on the upper rotation 2 of this lower running body 1 pivotally and be installed on the operation auxiliary equipment 3 of this upper rotation 2. Operation auxiliary equipment 3 comprises swing arm 4, bucket bar 5, scraper bowl 6 and the hydro-cylinder 7,8,9 making them work respectively that is hydraulic actuation device. Described excavator also comprises: hydro-pump, and it is to the multiple hydraulic actuation device supply working oil comprising described hydro-cylinder 7 to 9, to drive this hydraulic actuation device; And control valve, it is between this hydro-pump and described each hydraulic actuation device, and lead described hydraulic actuation device by described working oil.
Upper rotation 2 is including as the upper frame 10 of Ji Tai, and the either side in the left and right sides of the front portion of this upper frame 10 (is left side usually as shown in Figure. Hereinafter, be described for this situation) part on wheel house 11 is set, the rearward end of upper frame 10 arranges counterweight 12. In addition, on the rear portion of upper frame 10, and than described wheel house 11 rearward and the position in the front of counterweight 12, it is formed with engine room 13, in this engine room 13, it is provided as the engine 14 of propulsion source.
Fig. 4 schematically shows the structure of described upper frame 10 and the general device layout on this upper frame 10.
Described upper frame 10 is erect left stringer board 15, right stringer board 16, left clapboard 17, central baffle 18 and right clapboard 19 are set. Left and right stringer board 15,16 in the middle portion of the width of described upper frame 10 along the front and back of this upper frame 10 to extension, its length be substantially equal to described upper frame 10 front and back to length, further, this left and right stringer board 15,16 holds a concurrent post the reinforcement parts of upper frame 10 entirety and the installation parts of operation auxiliary equipment 3. Described each dividing plate 17,18,19 is arranged at the rear portion of upper frame 10 in the way of orthogonal with described stringer board 15,16.
Described dividing plate 17 to 19, described counterweight 12 and not shown horizontal side protecting component and upside protecting component form engine room 13, in this engine room 13, it is provided with engine 14 and it is arranged at the left side of this engine 14 and the hydro-pump 20 that drives by this engine 14.
Described upper frame 10 is formed with device space S1. This device space S1 is positioned at than described engine room 13 on the front and than wheel house 11 on the right side, and covers by not shown protecting component. In this device space S1, arranging the actuator working equipment for making hydraulic actuation device work, this actuator working equipment supplies the operating oil tank 21 in source and the control valve (multi-joint valve) 22 of the work of hydraulic control actuator including as working oil. In addition, in the position in the described front of operating oil tank 21 and the front of device space S1, fuel container 23 is set.
At this, " device space S1 " represents the space that can arrange equipment, generally speaking refer to engine room front space and than wheel house 11 whole space on the right side, but in the known technology shown in Fig. 4, be wherein used as the substantial device space than right stringer board 16 space on the right side. So, it is arranged in the lateral direction in the machinery of same side at hydro-pump 20 and actuator working equipment (operating oil tank 21 and control valve 22), owing to this hydro-pump 20 is shorter with the distance of this actuator working equipment, thus connect their pipe, namely supplying the loopback pipe 25 of the tail pipe 24 of the working oil in operating oil tank 21 and connection control valve 22 and operating oil tank 21 to hydro-pump 20 all can be shorter. In addition, control valve 22 and operation auxiliary equipment hydraulic actuation device are connected by actuator pipes (supply side of pressure oil and return each pipe of side) 26.
But, in some engineering machinery, because based on the relation reducing the device layout that the turning radius etc. requires, sometimes described hydro-pump 20 being arranged at side opposite each other respectively in the lateral direction with described actuator working equipment 21,22. Such as, be arranged in the machinery in right forward side at device space S1, as in Fig. 4 with shown in two dot chain line, the left side (with reference to No. 2000-291055, Japanese Laid-Open Patent Publication) that hydro-pump 20 can be arranged in engine room 13.
As mentioned above, it is arranged in the lateral direction respectively in the engineering machinery of side opposite each other at hydro-pump 20 and actuator working equipment 21,22, distance between hydro-pump 20 and actuator working equipment 21,22 is elongated, and the length particularly connecting the tail pipe 24 of hydro-pump 20 with operating oil tank 21 becomes especially long. Thus, join the cost needed for pipe and become high. And, as the distinctive problem of tail pipe, the problem in pump this equipment performance of negative pressure degradation also can be produced.
Summary of the invention
In view of the above problems, it is an object of the invention to provide and a kind of comprise hydro-pump and the engineering machinery of actuator working equipment, in this engineering machinery, although described hydro-pump and actuator working equipment are arranged at side opposite each other respectively in the lateral direction, but the length connecting the tail pipe of hydro-pump and operating oil tank is short, accordingly, it may be possible to implementation cost reduces and the guaranteeing of good negative pressure performance of hydro-pump.
The present invention provides a kind of engineering machinery, comprising: lower running body; Upper rotation, is equipped on described lower running body with freely rotating; And operation auxiliary equipment, it is installed on the front portion of described upper rotation. Described upper rotation has: upper frame; Wheel house, the part of its either side being arranged in the left and right sides of the front portion of this upper frame; And engine room, it is formed at the rear portion of upper frame. In this engine room, the hydro-pump of the end being provided with the engine extended in left-right direction and being arranged in the both ends in the direction, left and right of this engine with described wheel house same side. On described upper frame, the front of described engine room and in the lateral direction part with described wheel house opposition side be provided with the device space, this device space is provided with operating oil tank and control valve, the collecting of this operating oil tank is comprised the work of multiple hydraulic actuation devices of the hydraulic actuation device of described operation auxiliary equipment by the working oil of described hydro-pump, described control valve control. Described operating oil tank be arranged at than described control valve rearward side and on the width of upper frame than this control valve position in the inner part, this operating oil tank is connected by tail pipe with described hydro-pump.
In this engineering machinery, described operating oil tank is arranged at than described control valve side and in the direction of the width than this control valve position in the inner part rearward, namely in front and back to the position with all close than control valve hydro-pump on direction, left and right, although so hydro-pump and operating oil tank are arranged at side opposite each other respectively in the lateral direction, but the necessary length of tail pipe can be suppressed. Consequently, it is possible to realize low joining guaranteeing of pipe cost and good pump negative pressure performance. In addition, because control valve is arranged at the position of side more forward than operating oil tank, namely than the position of operating oil tank near operation auxiliary equipment, so also can shorten actuator pipes that operation auxiliary equipment hydraulic actuation device (such as boom cylinder, bucket bar hydro-cylinder, scraper bowl hydro-cylinder) is connected with control valve.
In the present invention, described control valve can also be connected by loopback pipe with operating oil tank, and the oil that returns from described hydraulic actuation device returns described operating oil tank by described control valve and described loopback pipe.
In the engineering machinery with described loopback pipe, it is preferable that, described control valve and operating oil tank are set in the way of allowing described control valve entirety be positioned at side more forward than described operating oil tank so that form the space for setting described loopback pipe in the front of operating oil tank. This setting, such as, when making to observe from side in tandem with operating oil tank edge with described control valve, this control valve is compared with the setting that a part for operating oil tank overlaps, it is possible to guarantees that loopback longer along the longitudinal direction is effective in the front of operating oil tank and joins tube space. Consequently, it is possible to improve the degree of freedom of the bending grade of pipe (flexible pipe that such as can bend), pipe distribution operation is made to become easy.
On the other hand, described operating oil tank can also have the suction port for connecting described tail pipe and be used for connecting the loopback mouth of described loopback pipe, and described suction port is arranged at the rear portion of described operating oil tank, and described loopback mouth is arranged at the front portion of described operating oil tank. By the setting of described suction port and loopback mouth, it is possible to make tail pipe and loopback pipe all shorten. Thus, joining pipe cost and reduce further, the reducing effect of the pump negative pressure produced by tail pipe improves, and the pressure-losses of loopback pipe also reduces.
As mentioned above, according to the present invention, can provide a kind of and comprise hydro-pump and the engineering machinery of actuator working equipment, in this engineering machinery, although described hydro-pump and actuator working equipment are arranged at side opposite each other respectively in the lateral direction, but the length connecting the tail pipe of hydro-pump and operating oil tank is shorter, accordingly, it may be possible to the guaranteeing of the good negative pressure performance of implementation cost reduction and hydro-pump.
Accompanying drawing explanation
Fig. 1 is the vertical view of the setting of each equipment schematically showing on the upper frame of the upper rotation involved by embodiments of the present invention.
Fig. 2 is the figure of the II-II line section being exaggerated Fig. 1.
Fig. 3 is the summary side elevation of the excavator of the application example as the present invention.
Fig. 4 is the vertical view that the equipment being shown schematically on the upper frame of conventional upper rotation is arranged.
Embodiment
According to Fig. 1 and Fig. 2, embodiments of the present invention are described.
In this enforcement mode, apply the present invention to the hydraulic excavator shown in described Fig. 3. That is, this excavator involved by enforcement mode comprises the lower running body 1 of track type, can be equipped on the upper rotation 2 of this lower running body 1 pivotally and be installed on the operation auxiliary equipment 3 of this upper rotation 2. Operation auxiliary equipment 3 comprises swing arm 4, bucket bar 5, scraper bowl 6 and the hydro-cylinder 7,8,9 making them work respectively that is hydraulic actuation device. Described excavator also comprises: hydro-pump, and it is to the multiple hydraulic actuation device supply working oil comprising described hydro-cylinder 7 to 9; And control valve, between this hydro-pump and described each hydraulic actuation device.
Replacing the upper frame 10 shown in Fig. 3, wheel house 11, counterweight 12 and engine room 13, upper rotation 2 has the upper frame 30 shown in Fig. 1, wheel house 31, counterweight 32 and engine room 33. Upper frame 30 is the Ji Tai of upper rotation 2, and the part of the either side (being left side in the present embodiment) in the left and right sides of the front portion of this upper frame 30 arranges described wheel house 31, and the rearward end at upper frame 30 arranges described counterweight 32. In addition, at the rear portion of upper frame 30, and than described wheel house 31 rearward and the position in the front of counterweight 32, form described engine room 33, in this engine room 33, it is provided as the engine 34 of propulsion source.
Described upper frame 30 is erect left stringer board 35, right stringer board 36, left clapboard 37, central baffle 38 and right clapboard 39 are set. Left and right stringer board 35,36 in the middle portion of the width (direction, left and right) of described upper frame 30 along the front and back of this upper frame 30 to extension, the front and back that its length is substantially equal to described upper frame 30 to length, further, this left and right stringer board 35,36 holds a concurrent post the reinforcement parts of upper frame 30 entirety and the installation parts of operation auxiliary equipment 3. Described each dividing plate 37,38,39 is arranged at the rear portion of upper frame 30 in the way of orthogonal with described stringer board 35,36.
Described dividing plate 37 to 39, described counterweight 32 and not shown horizontal side protecting component and upside protecting component form engine room 33, in this engine room 33, and the hydro-pump 40 being provided with engine 34 and driving by this engine 34. Hydro-pump 40 is arranged at the end in the left side of engine 34, namely in the both ends, left and right of engine 34 with the end of described wheel house 31 same side.
Described upper frame 30 is formed with device space S2. This device space S2 is positioned at than described engine room 33 on the front and than wheel house 31 on the right side, and covers by not shown protecting component. In this device space S2, arranging the actuator working equipment for making hydraulic actuation device work, this actuator working equipment comprises: operating oil tank 41, and it accommodates the working oil drawn by described hydro-pump 40; And control valve (multi-joint valve) 42, the work of its hydraulic control actuator.
Present embodiment is taking small-sized excavator as application. In this small-sized excavator, as shown in the figure, with regard to front and back to size and direction, left and right size with regard to, the ratio shared in upper frame 30 of wheel house 31 is big. Therefore, the right-hand member of wheel house 31 is positioned near right stringer board 36, is equivalent to described device space S2 than the right-hand member of described wheel house 31 space on the right side in the space in the front of engine room 33.
Described hydro-pump 40 is arranged at the left side of engine 34 in engine room 33, and this hydro-pump 40 is connected by tail pipe 44 with operating oil tank 41, and on the other hand, operating oil tank 41 is connected by loopback pipe 45 with control valve 42. In addition, control valve 42 is connected with each hydraulic actuation device with not shown operation auxiliary equipment by actuator pipes 46.
As depicted in figs. 1 and 2, described operating oil tank 41 and control valve 42 are in the way of allowing operating oil tank 41 be positioned at the inner side of the rear side of control valve 42 and the width (direction, left and right) of upper frame 30, in other words, in the way of allowing control valve 42 be positioned at the outside of the front side of operating oil tank 41 and the width of upper frame 30, it is arranged at device space S2. Specifically, operating oil tank 41 is positioned at the position of front and back to the portion rearward (by engine room 33 side) in centre portion of device space S2, and is equipped on right stringer board 36 in the position in the face, right side near wheel house 31. On the other hand, control valve 42 is positioned at the front portion of device space S2, and the entirety of this control valve 42 is positioned at side more forward than operating oil tank 41 and in the direction of the width than operating oil tank 41 in the outer part (right side), is formed with the space for configuring described loopback pipe 45 in the front of operating oil tank 41 and namely joins tube space 47. In addition, described fuel container 43 is arranged at the right side of described operating oil tank 41, and the front portion of this fuel container 43 forward side (control valve 42 side) compared with operating oil tank 41 is given prominence to.
Described operating oil tank 41 has suction port 41a and loopback mouth 41b. Suction port 41a is arranged on the bottom surface at the rear portion of operating oil tank 41 than right stringer board 36 to keep left the part of side, and loopback mouth 41b is arranged on the front surface of the leading section of operating oil tank 41 than described right stringer board 36 part by the top. Described tail pipe 44 is connected to described suction port 41a, and between this suction port 41a and the suction port 40a of described hydro-pump 40. Described loopback pipe 45 is connected to described loopback mouth 41b, and between this loopback mouth 41b and the fuel tank mouth 42a of described control valve 42. Described control valve 42 is connected by loopback pipe 45 with operating oil tank 41, and the oil that returns from described hydraulic actuation device returns described operating oil tank 41 by described control valve 42 and described loopback pipe 45. Described suction port 41a can also be arranged at the aft end face of operating oil tank 41, and described loopback mouth 41b can also be arranged at the bottom surface of the front portion of operating oil tank 41.
So, in the excavator shown in Fig. 1 and Fig. 2, operating oil tank in device space S2 41 is as follows with the position relation of control valve 42: operating oil tank 41 is arranged at the position inside the rear side of control valve 42 and width, namely, front and back to direction, left and right on all than the position of control valve 42 near hydro-pump 40, therefore, although hydro-pump 40 and operating oil tank 41 are arranged at side opposite each other on direction, left and right respectively, but tail pipe 44 the shortizationest can be made. Thus can join pipe cost by much slower, and guarantee good pump negative pressure performance. On the other hand, control valve 42 is arranged at the position of the front side of described operating oil tank 41, namely, it is arranged at than the position of operating oil tank 41 near operation auxiliary equipment, therefore, it is also possible to shorten the length of the actuator pipes 46 being connected by operation auxiliary equipment hydraulic actuation device (being boom cylinder 7, bucket bar hydro-cylinder 8 and scraper bowl hydro-cylinder 9 in the hydraulic excavator shown in Fig. 3) with control valve 42.
And, in the excavator shown in Fig. 1 and Fig. 2, because arranging described operating oil tank 41 and described control valve 42 in the way of allowing described control valve 42 entirety be positioned at side more forward than operating oil tank 41, thus formed in the front of operating oil tank 41 and join tube space 47 for what configure loopback pipe 45, so with described control valve 42 and operating oil tank 41 in the longitudinal direction close to each other make to observe from side time described control valve 42 compared with the situation that a part for operating oil tank 41 overlaps, can guarantee that in the front of operating oil tank 41 loopback longer along the longitudinal direction is effective and join tube space 47. this can improve the degree of freedom of the bending grade of loopback pipe (flexible pipe that such as can bend) 45, makes pipe distribution operation become easy.
In addition, as mentioned above, in the operating oil tank 41 of rear side being arranged at control valve 42, near the part of hydro-pump 40 and the rear portion of operating oil tank 41, suction port 41a is being set, near the part of control valve 42 and the front portion of operating oil tank 41, loopback mouth 41b is being set, accordingly, it may be possible to effectively shorten the tail pipe 44 and the loopback pipe 45 that are connected to this suction port 41a and loopback mouth 41b. Consequently, it is possible to realize the further reduction joining pipe cost, improving by sucking the reducing effect joining the pump negative pressure that pipe 44 produces, the pressure-losses that pipe 45 is joined in loopback also reduces.
In addition, described operating oil tank 41 is arranged on right stringer board 36, being positioned in this operating oil tank 41 arranges described suction port 41a than the keep left bottom surface of part of side of described right stringer board 36, therefore, without the need to perforate on right stringer board 36 and make tail pipe 44 through wherein so that the pipe distribution operation comprising hole machined becomes easy.
The present invention is not limited to enforcement mode described above. Such as, it is also possible to described operating oil tank 41 is arranged at the position closer to right clapboard 39, i.e. the last position of device space S2, on the other hand, is arranged at the position closer to operation auxiliary equipment by described control valve 42, i.e. the front position of device space S2. , in the present invention, it is also possible to contrary with described enforcement mode, wheel house 31 is arranged at the right front portion of upper frame 30, in addition device space S2 is arranged at the left front portion of upper frame 30, and hydro-pump 40 is arranged at the right side of engine room 34. And, the present invention can also be applied to the engineering machinery beyond excavator.
Claims (4)
1. an engineering machinery, it is characterised in that comprising:
Lower running body;
Upper rotation, is equipped on described lower running body with freely rotating; And
Operation auxiliary equipment, is installed on the front portion of described upper rotation, wherein,
Described upper rotation has: upper frame; Wheel house, the part of its either side being arranged in the left and right sides of the front portion of this upper frame; And engine room, it is formed at the rear portion of upper frame,
In described engineering machinery, in described engine room, the hydro-pump of the end being provided with the engine extended in left-right direction and being arranged in the both ends in the direction, left and right of this engine with described wheel house same side,
On described upper frame, the front of described engine room and in the lateral direction part with described wheel house opposition side be provided with the device space, this device space is provided with operating oil tank and control valve, this operating oil tank accommodates the working oil drawn by described hydro-pump, the control of described control valve comprises the work of multiple hydraulic actuation devices of the hydraulic actuation device of described operation auxiliary equipment, in the lateral direction, described operating oil tank and described control valve are arranged on the side contrary with the side arranging described hydro-pump
Described operating oil tank be arranged at than described control valve rearward side and on the width of upper frame than this control valve position in the inner part, this operating oil tank is connected by tail pipe with described hydro-pump.
2. engineering machinery according to claim 1, it is characterised in that: described control valve is connected by loopback pipe with operating oil tank, and the oil that returns from described hydraulic actuation device returns described operating oil tank by described control valve and described loopback pipe.
3. engineering machinery according to claim 2, it is characterized in that: in the way of allowing the entirety of described control valve be positioned at side more forward than described operating oil tank, described control valve and operating oil tank are set so that form the space for setting described loopback pipe in the front of operating oil tank.
4. engineering machinery according to Claims 2 or 3, it is characterized in that: described operating oil tank has the suction port for connecting described tail pipe and is used for connecting the loopback mouth of described loopback pipe, described suction port is arranged at the rear portion of described operating oil tank, and described loopback mouth is arranged at the front portion of described operating oil tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-202975 | 2011-09-16 | ||
| JP2011202975A JP5780078B2 (en) | 2011-09-16 | 2011-09-16 | Construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102995693A CN102995693A (en) | 2013-03-27 |
| CN102995693B true CN102995693B (en) | 2016-06-01 |
Family
ID=47924748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210348899.7A Expired - Fee Related CN102995693B (en) | 2011-09-16 | 2012-09-14 | Engineering machinery |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5780078B2 (en) |
| CN (1) | CN102995693B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898573A (en) * | 2019-03-11 | 2019-06-18 | 黎明职业大学 | A kind of excavator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1030255A (en) * | 1996-07-15 | 1998-02-03 | Komatsu Ltd | Hydraulic excavator hydraulic oil tank |
| JP2003020936A (en) * | 2001-07-03 | 2003-01-24 | Komatsu Ltd | Arrangement structure of liquid reducing agent tank for NOx reduction catalyst |
| CN1643223A (en) * | 2002-03-26 | 2005-07-20 | 神钢建设机械株式会社 | Mini Swing Excavator |
| CN1948636A (en) * | 2005-10-12 | 2007-04-18 | 神钢建设机械株式会社 | Construction machine |
| CN101595284A (en) * | 2007-06-26 | 2009-12-02 | 日立建机株式会社 | self-propelled construction machinery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4515232B2 (en) * | 2004-11-22 | 2010-07-28 | 株式会社クボタ | Swivel work machine |
| KR100974277B1 (en) * | 2008-03-04 | 2010-08-06 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic piping fixing device of construction machinery |
-
2011
- 2011-09-16 JP JP2011202975A patent/JP5780078B2/en not_active Expired - Fee Related
-
2012
- 2012-09-14 CN CN201210348899.7A patent/CN102995693B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1030255A (en) * | 1996-07-15 | 1998-02-03 | Komatsu Ltd | Hydraulic excavator hydraulic oil tank |
| JP2003020936A (en) * | 2001-07-03 | 2003-01-24 | Komatsu Ltd | Arrangement structure of liquid reducing agent tank for NOx reduction catalyst |
| CN1643223A (en) * | 2002-03-26 | 2005-07-20 | 神钢建设机械株式会社 | Mini Swing Excavator |
| CN1948636A (en) * | 2005-10-12 | 2007-04-18 | 神钢建设机械株式会社 | Construction machine |
| CN101595284A (en) * | 2007-06-26 | 2009-12-02 | 日立建机株式会社 | self-propelled construction machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102995693A (en) | 2013-03-27 |
| JP2013064254A (en) | 2013-04-11 |
| JP5780078B2 (en) | 2015-09-16 |
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