CN102852182B - Engineering machinery - Google Patents

Engineering machinery Download PDF

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Publication number
CN102852182B
CN102852182B CN201210213882.0A CN201210213882A CN102852182B CN 102852182 B CN102852182 B CN 102852182B CN 201210213882 A CN201210213882 A CN 201210213882A CN 102852182 B CN102852182 B CN 102852182B
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CN
China
Prior art keywords
hole
bolt
balance weight
standard equilibration
equilibration block
Prior art date
Application number
CN201210213882.0A
Other languages
Chinese (zh)
Other versions
CN102852182A (en
Inventor
浦濑广平
海崎裕辉
本图诚
入野照男
Original Assignee
日立建机株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2011141673A priority Critical patent/JP5420595B2/en
Priority to JP2011-141673 priority
Application filed by 日立建机株式会社 filed Critical 日立建机株式会社
Publication of CN102852182A publication Critical patent/CN102852182A/en
Application granted granted Critical
Publication of CN102852182B publication Critical patent/CN102852182B/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/18Counterweights
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D49/00Tractors
    • B62D49/08Tractors having means for preventing overturning or tipping
    • B62D49/085Counterweight
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/74Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24Safety devices, e.g. for preventing overload

Abstract

Even if the inspection also can carrying out standard equilibration block bolt under the invention provides the state being provided with additional balance weight in the rear surface of standard equilibration block, the engineering machinery of tightening.On position opposed with the standard equilibration block bolt insertion hole (17A, 17B, 17C) being located at standard equilibration block (14) in additional balance weight (20), the standard equilibration block bolt arranging pluggable standard equilibration block bolt (18) plugs hole (23A, 23B, 23C).Thus, even if under the state that the rear surface (14A) of standard equilibration block (14) is provided with additional balance weight (20), also can plug hole (23A, 23B, 23C) to carry out by standard equilibration block bolt Inspection, the tightening operation of standard equilibration block bolt (18), thus its workability can be improved.

Description

Engineering machinery

Technical field

The present invention relates to the engineering machinery of hydraulic crawler excavator, hydraulic crane etc., particularly relate to the engineering machinery with standard equilibration block and the additional balance weight obtained with the weight balancing of apparatus for work.

Background technology

Generally, the hydraulic crawler excavator as engineering machinery roughly comprises: can lower traveling body voluntarily; Rotatably be equipped on the upper rotating body on this lower traveling body; And pitching can be located at the apparatus for work of the front side of this upper rotating body with moving.Further, upper rotating body has the rotating frame forming supporting structure, in the rear portion side of this rotating frame, is equipped with for obtaining the counterweight with the weight balancing of apparatus for work.

In this hydraulic crawler excavator, replace the scraper bowl that uses of digging operation, such as, other the power tool such as the grab bucket for disassembling operation can be installed.Like this, when be replaced by than according to the operating type of apparatus for work by other apparatus for work that the weight of the apparatus for work of standard facility is heavier, in order to obtain the balance of the center of gravity of hydraulic crawler excavator, the counterweight of standard is installed additional counterweight (for example, referring to patent document 1, patent document 2).

Patent document 1: Japanese Unexamined Patent Publication 61-80854 publication

Patent document 2: Japanese Unexamined Patent Publication 2005-307560 publication

But, with regard to the hydraulic crawler excavator based on above-mentioned patent document 1, additional balance weight is installed on the rear surface of standard equilibration block, at the head of the erection bolt (standard equilibration block bolt) of standard equilibration block, screwed hole is set, and the bolt of additional balance weight is combined on this screwed hole, thus fixing additional balance weight.Further, with regard to the hydraulic crawler excavator based on patent document 2, utilize bolt that additional balance weight is installed on the rear surface of standard equilibration block.In any one prior art, all install on the rear surface of standard equilibration block and add balance weight, thus cause standard equilibration block bolt to be hidden, if do not pull down additional balance weight, just cannot carry out the loosening confirmation of standard equilibration block bolt, tighten.Therefore, if do not pull down additional balance weight, then cannot dismounting standard equilibration block, thus have the problem that the dismounting operation of standard equilibration block needs man-hour.

Summary of the invention

The present invention produces in view of the problem of above-mentioned prior art, even if under the object of the present invention is to provide the state of having installed additional balance weight on the rear surface of standard equilibration block, the Inspection of standard equilibration block bolt, the engineering machinery of dismounting operation also can be carried out.

Engineering machinery of the present invention comprises: can lower traveling body voluntarily; Rotatably be located at the upper rotating body on this lower traveling body; And be located at the apparatus for work of toe lateral of this upper rotating body, and described upper rotating body possesses: be formed as supporting structure and have the rotating frame of balance weight installing component in rear portion side; Standard equilibration block bolt is used to be installed on the standard equilibration block of described balance weight installing component; And use additional balance weight bolt to be installed on the additional balance weight of the rear surface of this standard equilibration block according to the operating type of described apparatus for work.

Further, in order to solve above-mentioned problem, the feature of the structure that the invention of scheme 1 adopts is, described standard equilibration block is arranged: for the standard equilibration block bolt insertion hole making described standard equilibration block bolt insert; And be configured at the position different from this standard equilibration block bolt insertion hole and the additional balance weight bolt fastening hole of fastening described additional balance weight bolt, and arrange on described additional balance weight: be configured at the position opposed with described additional balance weight bolt fastening hole and make the additional balance weight bolt insertion hole that described additional balance weight bolt is inserted; And be configured at the position opposed with described standard equilibration block bolt insertion hole and the standard equilibration block bolt plugging described standard equilibration block bolt plugs hole.

The feature of the invention of scheme 2 is, described standard equilibration block upper and lower to pars intermedia arrange and be used for inspection hole that the carrying equipment being equipped on described rotating frame is checked, the described standard equilibration block bolt insertion hole being located at described standard equilibration block is located at than described inspection hole position more on the lower with described additional balance weight bolt fastening hole.

The feature of the invention of scheme 3 is, on a left side, the top-left position that right direction is separated and upper-right position respectively arrange the described standard equilibration block bolt insertion hole that is located at described standard equilibration block respectively, and it is left at these, downside between right standard equilibration block bolt insertion hole arranges the described standard equilibration block bolt insertion hole that is located at described standard equilibration block, and described additional balance weight is positioned at by bolt fastening hole the leg-of-mutton region that connects three described standard equilibration block bolt insertion holes and in leftward position, right positions is each respectively arranges one.

The feature of the invention of scheme 4 is, described additional balance weight bolt insertion hole is formed by inserting hole portion, large footpath and path inserting hole portion, this inserting hole portion, large footpath extends to the centre position of the thickness direction of described additional balance weight in the mode of the rear surface being positioned at described additional balance weight, and bottom becomes end difference, this path inserting hole portion is arranged from the through front side to described additional balance weight of the end difference in this inserting hole portion, large footpath, the bolt shaft of described additional balance weight bolt is inserted through path inserting hole portion, the bolt head of described additional balance weight bolt is accommodated in inserting hole portion, described large footpath.

The feature of the invention of scheme 5 is, being located at the described additional balance weight bolt insertion hole of described additional balance weight and described standard equilibration block bolt, to plug hole be run through the through hole being arranged at described additional balance weight, or the cut hole formed by the part cutting described additional balance weight.

Effect of the present invention is as follows.

According to the invention of scheme 1, because the standard equilibration block bolt being provided with pluggable standard equilibration block bolt on additional balance weight plugs hole, even if so under the state being provided with additional balance weight in the rear surface of standard equilibration block, Inspection, the tightening operation of standard equilibration block bolt also can be carried out by standard equilibration block bolt plug hole.And, even if under the state that the rear surface of standard equilibration block is provided with additional balance weight, also standard equilibration block bolt can be plugged relative to balance weight installing component by standard equilibration block bolt plug hole, thus the dismounting operation of standard equilibration block can be carried out.

According to the invention of scheme 2, owing to being provided with standard equilibration block bolt insertion hole and additional balance weight bolt fastening hole in the inspection hole position more on the lower than the carrying equipment being located at standard equilibration block, so inspection hole can not be added balance weight blocking.Therefore, even if when being provided with additional balance weight on standard equilibration block, the Inspection of carrying equipment also can be carried out by inspection hole.

According to the invention of scheme 3, owing to being configured with additional balance weight bolt in the leg-of-mutton region connecting each standard equilibration block bolt, so three standard equilibration block bolts that the load of additional balance weight can be made to be fastened onto balance weight installing component are substantially uniformly born, thus the stability of hydraulic crawler excavator can be realized.

According to the invention of scheme 4, by the head of additional balance weight bolt is accommodated in inserting hole portion, large footpath, the head impact of rock etc. and additional balance weight bolt can be suppressed when such as carrying out digging operation, thus this additional balance weight bolt can be protected.Further, because the head of additional balance weight bolt does not expose from the rear surface of additional balance weight, so the outward appearance of engineering machinery can be made good.

According to the invention of scheme 5, the through hole or cut hole that run through and be arranged at additional balance weight can be utilized to carry out detection operation, the dismounting operation of standard equilibration block bolt and additional balance weight bolt.

Accompanying drawing explanation

Fig. 1 is the elevation with the hydraulic crawler excavator of standard equilibration block and additional balance weight representing embodiments of the present invention.

Fig. 2 is the exploded perspective view representing rotating frame, standard equilibration block, add balance weight.

Fig. 3 represents the right side view observed from balance weight side and be provided with the state of standard equilibration block at rotating frame.

Fig. 4 represents the right side view observed from balance weight side and be provided with the state of standard equilibration block and additional balance weight at rotating frame.

Fig. 5 represents the sectional view from arrow V-V direction observation caliber balance weight bolt Fig. 4, standard equilibration block bolt plug hole etc.

Fig. 6 is the sectional view identical with Fig. 5 of the dismounting state representing standard equilibration block bolt.

Fig. 7 represents the sectional view observed from arrow VII-VII direction Fig. 4 and add balance weight bolt, add balance weight bolt insertion hole etc.

Fig. 8 represents that standard equilibration block bolt plugs hole, adds the right side view identical with Fig. 4 of the variation of balance weight bolt insertion hole.

Symbol description

1-hydraulic crawler excavator (engineering machinery), 2-lower traveling body, 3-upper rotating body, 4-apparatus for work, 5-rotating frame, 6-balance weight installing component, 12-motor (carrying equipment), 13-hydraulic pump (carrying equipment), 14-standard equilibration block, 14A-below, 15-inspection hole, 17A, 17B, 17C-standard equilibration block bolt insertion hole, 18-standard equilibration block bolt, 18A, 22A-bolt shaft, 18B, 22B-bolt head, 19A, 19B-add balance weight bolt fastening hole, 20-add balance weight, 20A-below, 21A, 21B, 21A ', 21B '-add balance weight bolt insertion hole, 21B1-end difference, 21B2-large inserting hole portion, footpath, 21B3-path inserting hole portion, 22-add balance weight bolt, 23A, 23B, 23C, 23A ', 23B ', 23C '-standard equilibration block bolt plugs hole.

Detailed description of the invention

Below, as the engineering machinery being applicable to embodiments of the present invention, composition graphs 1 to Fig. 8 is described in detail for hydraulic crawler excavator.

In FIG, symbol 1 is the hydraulic crawler excavator of the top cover style as the engineering machinery being applicable to embodiments of the present invention, and this hydraulic crawler excavator 1 is the small-sized hydraulic crawler excavator being referred to as mini-excavator of the operation being applicable to narrow operation field.Further, hydraulic crawler excavator 1 roughly comprises: can lower traveling body 2 voluntarily; Rotatably be located at the upper rotating body 3 on this lower traveling body 2; And be located at this upper rotating body 3 front and rear direction front side and carry out the apparatus for work 4 of the digging operation of native sand etc.

Herein, upper rotating body 3 has the width dimensions in the left and right direction roughly equal with the overall width of lower traveling body 2, from being roughly formed as circular during top view.Thus, hydraulic crawler excavator 1 is configured to the little rotary-type hydraulic crawler excavator in following rear, namely, when upper rotating body 3 rotates on lower traveling body 2 centered by center of rotation, the rear surface of standard equilibration block 14 described later, additional balance weight 20 is roughly contained in the overall width of lower traveling body 2.

Further, upper rotating body 3 is made up of rotating frame 5 described later, driver's seat 8, top cover 11, motor 12, standard equilibration block 14 and additional balance weight 20 etc.

Symbol 5 is rotating frames of the pedestal as upper rotating body 3.As shown in Figure 2, this rotating frame 5 is roughly made up of such as lower component: make the flat base plate 5A that the pars intermedia in left and right direction extends along front and rear direction; On left and right direction, separately the left stringer board 5B of setting, right stringer board 5C roughly V shape is erect in the upper surface side of this base plate 5A; Be located at the leading section of this each stringer board 5B, 5C and the frame support bracket 5D of supports work device 4; And by making bending left side frame 5E, the right side frame 5F etc. being formed as the arc-shaped in the outside surrounding above-mentioned base plate 5A such as such as tubing.

Symbol 6 represents the balance weight installing component being located at the rear end side of rotating frame 5, and this balance weight installing component 6 is installed for standard equilibration block 14 described later.At this, balance weight installing component 6 is made up of the rectangular flat board of the heavy wall extended along left and right direction, is fixed on base plate 5A in the rear end side of rotating frame 5 by welding etc.Further, balance weight installing component 6 is provided with three bolt insertion hole 6A, 6B, the 6Cs opposed with standard equilibration block bolt insertion hole 17A, 17B, 17C described later along front and rear direction is through.Further, in the front surface 6D side of balance weight installing component 6, three nut 7(are welded with coaxially with reference to Fig. 5 with each bolt insertion hole 6A, 6B, 6C).

Symbol 8 is the driver's seats of the central portion being disposed in rotating frame 5, and this driver's seat 8 takes a seat for operator.Further, in the front side of driver's seat 8, be equipped and carry out by operator the travelling control lever pedal 9 that operates, in the arranged on left and right sides of driver's seat 8, be configured with and carry out by operator the Operation control bar 10 that operates.Further, the upside of driver's seat 8 is covered by top cover 11.

Symbol 12 be positioned at standard equilibration block 14 described later front side and as the motor (with reference to Fig. 1) of carrying equipment of rear portion side being equipped on rotating frame 5, this motor 12 is configured to Diesel engine, and is mounted on rotating frame 5 with the horizontal state extended along left and right direction.Further, symbol 13 is the hydraulic pumps in the left side being installed on motor 12, and this hydraulic pump 13 is driven by motor 12, is discharged by the working oil being stored in operating oil tank (not shown) thus as pressure oil to the hydraulic actuator being equipped on hydraulic crawler excavator 1.

Next, be described for the standard equilibration block of embodiments of the present invention and additional balance weight.

Symbol 14 represents the rear side the standard equilibration block being located at the rear end side of rotating frame 5 that are positioned at motor 12 grade.This standard equilibration block 14 is formed by by casting shaping cast member, is obtain the parts with the weight balancing of apparatus for work 4.At this, the rear surface 14A of standard equilibration block 14 bends to arc-shaped in the central portion in the left and right direction mode that side is outstanding backward and is formed.

Further, standard equilibration block 14 is made up of such as lower component: be positioned at upper and lower to the intermediate equilibria block portion 14B of thin-walled of pars intermedia; Be positioned at balance weight portion, the upside 14C of the heavy wall of the upside of intermediate equilibria block portion 14B; And be positioned at balance weight portion, the downside 14D of wall thickness of downside of intermediate equilibria block portion 14B, and be provided with the inspection hole 15 being formed as rectangular shape at the central portion in the left and right direction of intermediate equilibria block portion 14B.This inspection hole 15 carries out open and close by the shutter 16 shown in Fig. 1, and operator carries out maintenance, the Inspection of the carrying equipment for motor 12, hydraulic pump 13 etc. by this inspection hole 15.

The mode that symbol 17A, 17B, 17C represent to be positioned at the downside more leaned on than inspection hole 15 is located at three standard equilibration block bolt insertion holes of balance weight portion, the downside 14D of standard equilibration block 14, and these each standard equilibration block bolt insertion hole 17A, 17B, 17C insert for standard equilibration block bolt 18 described later.At this, standard equilibration block bolt insertion hole 17A and 17B respectively arranges one in the top-left position of balance weight portion, downside 14D and upper-right position respectively in the mode of separating on left and right direction, and standard equilibration block bolt insertion hole 17C is in the centre of left and right standard equilibration block bolt insertion hole 17A, 17B and arranging one than on each standard equilibration block bolt insertion hole 17A, 17B position more on the lower.

That is, as shown in Figure 3, standard equilibration block bolt insertion hole 17A, 17B, 17C are configured at the vertex of a triangle being formed as downward convex, in this leg-of-mutton region S, be provided with additional balance weight bolt fastening hole 19A described later, 19B.

At this, as shown in Figure 5, standard equilibration block bolt insertion hole 17C is made up of large footpath inserting hole portion 17C2 and path inserting hole portion 17C3, large footpath inserting hole portion 17C2 extends to the centre position of thickness direction and bottom becomes end difference 17C1 from the rear surface 14A of standard equilibration block 14, and path inserting hole portion 17C3 is the through front side to standard equilibration block 14 from end difference 17C1.Further, standard equilibration block bolt insertion hole 17A, 17B is also the formation identical with standard equilibration block bolt insertion hole 17C.Further, standard equilibration block bolt 18 be inserted through standard equilibration block bolt insertion hole 17A, 17B, 17C and be inserted through bolt insertion hole 6A, 6B, 6C of balance weight installing component 6, and being combined on nut 7.Thus, standard equilibration block 14 uses three standard equilibration block bolts 18 and is anchored on balance weight installing component 6.In this case, as shown in Figure 5, the bolt shaft 18A of standard equilibration block bolt 18 is inserted through the path inserting hole portion 17C3 of standard equilibration block bolt insertion hole 17C, and the bolt head 18B of standard equilibration block bolt 18 is accommodated in the inserting hole portion 17C2 of large footpath with the state abutted with the end difference 17C1 of standard equilibration block bolt insertion hole 17C.Further, other two standard equilibration block bolts 18 are also inserted through standard equilibration block bolt insertion hole 17A, 17B therewith in the same manner.

Symbol 19A, 19B represent two the additional balance weight bolt fastening hole being positioned at balance weight portion, the downside 14D being located at standard equilibration block 14 than inspection hole 15 mode more on the lower, and these each additional balance weight bolt fastening hole 19A, 19B are fastening for additional balance weight bolt 22 described later.At this, the leftward position of an additional balance weight bolt fastening hole 19A in the leg-of-mutton region S being summit with three standard equilibration block bolt insertion holes 17A, 17B, 17C arranges one, and the right positions of another additional balance weight bolt fastening hole 19B in above-mentioned leg-of-mutton region S arranges one.

At this, as shown in Figure 7, add balance weight bolt fastening hole 19B to comprise: cave in as the depressed part 19B1 of concavity toward the front from the rear surface 14A of standard equilibration block 14; And offer internal thread in inner circumferential side and water the threaded block 19B2 of the front side casting from depressed part 19B1.On the other hand, add balancing block screw bolt fastener hole 19A also similarly to form therewith.

Next, symbol 20 represents the additional balance weight being installed on standard equilibration block 14 removably.Carry out employing the operating type disassembling the apparatus for work 4 of the situation of operation etc. of gripping apparatus according to replacing employing the digging operation of such as scraper bowl, this additional balance weight 20 adds and is installed on standard equilibration block 14.At this, add balance weight 20 by integrated cast member is formed by casting, and bend to arc-shaped in the mode abutted with the rear surface 14A of standard equilibration block 14 and formed.Further, add balance weight 20 and use additional balance weight bolt 22 described later and be installed on balance weight portion, the downside 14D of standard equilibration block 14, and be configured at the downside of inspection hole 15.Thus, be configured to reduce the position of centre of gravity of upper rotating body 3 and improve the stability of hydraulic crawler excavator 1.

Symbol 21A, 21B represent two the additional balance weight bolt insertion holes being located at additional balance weight 20.These each additional balance weight bolt insertion hole 21A, 21B are configured at and each additional balance weight bolt fastening hole 19A of standard equilibration block 14, position that 19B is corresponding.At this, as shown in Figure 7, an additional balance weight bolt insertion hole 21B is made up of large footpath inserting hole portion 21B2 and path inserting hole portion 21B3, large footpath inserting hole portion 21B2 extends to the centre position of thickness direction from the rear surface 20A of additional balance weight 20 and bottom becomes end difference 21B1, and path inserting hole portion 21B3 is the through front side to additional balance weight 20 from end difference 21B1.Further, another additional balance weight bolt insertion hole 21A is also formed therewith in the same manner.

Further, additional balance weight bolt 22 is inserted through additional balance weight bolt insertion hole 21A, 21B, and is combined on the additional balance weight bolt fastening hole 19A, the 19B that arrange on standard equilibration block 14.Thus, add balance weight 20 use two additional balance weight bolts 22 and be anchored on balance weight portion, the downside 14D of standard equilibration block 14.In this case, as shown in Figure 7, the bolt shaft 22A adding balance weight bolt 22 is inserted through the path inserting hole portion 21B3 of additional balance weight bolt insertion hole 21B, and the bolt head 22B adding balance weight bolt 22 is accommodated in the inserting hole portion 21B2 of large footpath with the state abutted with the end difference 21B1 of additional balance weight bolt insertion hole 21B.Further, another additional balance weight bolt 22 is also similarly inserted through additional balance weight bolt insertion hole 21A therewith.

Then, symbol 23A, 23B, 23C represents that three the standard equilibration block bolts being located at additional balance weight 20 plug hole.These each standard equilibration block bolts plug hole 23A, 23B, 23C and configure in the mode roughly coaxial with these in the position opposed with each standard equilibration block bolt insertion hole 17A, 17B, 17C of being located at standard equilibration block 14.At this, each standard equilibration block bolt plugs hole 23A, 23B, 23C and such as has the aperture freely can inserted for the sleeve part 24A tightening up the instruments 24 such as the box spanner of operation for standard equilibration block bolt 18 as illustrated in fig. 6, and through at the thickness direction of additional balance weight 20.

Thus, even if under the state being provided with additional balance weight 20 on the rear surface 14A of standard equilibration block 14, also from the 20A side, rear surface of additional balance weight 20 by the visual each standard equilibration block bolt 18 for standard equilibration block 14 being anchored on balance weight installing component 6 of each standard equilibration block bolt plug hole 23A, 23B, 23C, thus loosening of each standard equilibration block bolt 18 can be checked.

Further, as shown in Figure 6, the aperture of each standard equilibration block bolt plug hole 23A, 23B, 23C is formed as larger than the sleeve part 24A of the instrument 24 tightening up operation for standard equilibration block bolt 18.Therefore, be configured to, by instrument 24 being inserted each standard equilibration block bolt plug hole 23A, 23B, 23C, can be installed on the state of standard equilibration block 14 with additional balance weight 20, use instrument 24 carries out the tightening operation of standard equilibration block bolt 18, the plug operation of standard equilibration block bolt 18.

Hydraulic crawler excavator 1 based on present embodiment has formation as described above, and next, action when carrying out digging operation to operation hydraulic crawler excavator is described.

First, operator operates travelling control lever pedal 9 under the state occupying driver's seat 8, and the crawler belt of lower traveling body 2 can be driven thus to advance to make hydraulic crawler excavator 1 or retreat.Further, operator, by operation task control lever 10, can make apparatus for work 4 pitching carry out the digging operation etc. of native sand with moving.

Further, according to the present embodiment, in order to guarantee the stability of the main body of hydraulic crawler excavator 1 when various accessory is installed on apparatus for work 4, standard equilibration block 14 is installed and adds balance weight 20.At this, when additional balance weight 20 is installed on standard equilibration block 14, make the front surface of additional balance weight 20 and balance weight portion 14D on the downside of standard equilibration block 14() rear surface 14A abut, and respectively additional balance weight bolt 22 is inserted through on additional balance weight 20, run through setting two additional balance weight bolt insertion hole 21A, 21B.And, the additional balance weight bolt 22 being inserted through additional balance weight bolt insertion hole 21A is made to be combined on the additional balance weight bolt fastening hole 19A of standard equilibration block 14, further, the additional balance weight bolt 22 being inserted through additional balance weight bolt insertion hole 21B is made to be combined on the additional balance weight bolt fastening hole 19B of standard equilibration block 14.Thereby, it is possible in the downside of inspection hole 15 being located at standard equilibration block 14, additional balance weight 20 is installed on the rear surface 14A of standard equilibration block 14.

Now, on additional balance weight 20, and on the position opposed with standard equilibration block bolt insertion hole 17A, 17B, 17C, be formed with standard equilibration block bolt plug hole 23A, 23B, 23C respectively.Therefore, from the 20A side, rear surface of additional balance weight 20 by the next visual each standard equilibration block bolt 18 standard equilibration block 14 being anchored on balance weight installing component 6 of each standard equilibration block bolt plug hole 23A, 23B, 23C, thus can check loosening of each standard equilibration block bolt 18.

And, by instrument 24 being inserted each standard equilibration block bolt plug hole 23A, 23B, 23C, can be installed on the state of standard equilibration block 14 with additional balance weight 20, use instrument 24 carries out the tightening operation of standard equilibration block bolt 18, thus can improve its workability.On the other hand, as shown in Figure 6, the instrument 24 being inserted in each standard equilibration block bolt plug hole 23A, 23B, 23C can be utilized to carry out the plug operation of standard equilibration block bolt 18, so can such as to add the state that balance weight 20 is anchored on standard equilibration block 14, these standard equilibration blocks 14 are carried out installing, pulling down operation relative to the balance weight installing component 6 be arranged on rotating frame 5 together with additional balance weight 20, thus its workability can be improved.

And, according to the present embodiment, due to balance weight portion, the downside 14D more on the lower of the ratio inspection hole 15 in standard equilibration block 14 being provided with standard equilibration block bolt insertion hole 17A, 17B, 17C and additional balance weight bolt fastening hole 19A, 19B, so additional balance weight 20 can be fixed on the position more on the lower than inspection hole 15.Further, even if install additional balance weight 20 also can not block inspection hole 15, by opening shutter 16 as illustrated in fig. 1, the inspection of carrying equipment 12 grade of hydraulic crawler excavator 1 can be carried out.Further, by additional balance weight 20 being installed on balance weight portion, the downside 14D of standard equilibration block 14, the position of centre of gravity of upper rotating body 3 can being reduced, and the stability of hydraulic crawler excavator 1 can be realized.And, in the present embodiment, by two that are located at standard equilibration block 14 additional balance weight bolt fastening hole 19A, 19B be configured to left and right the mode of separating connect three standard equilibration block bolt insertion holes 17A, 17B, 17C leg-of-mutton region S in.Thus, can to be combined on each additional balance weight bolt fastening hole 19A, the state of 19B three standard equilibration block bolts 18 making the load of additional balance weight 20 be fastened onto balance weight installing component 6 substantially uniformly bear, thus can realize the stability of hydraulic crawler excavator 1.

In addition, according to the present embodiment, under the state of rear surface 14A using additional balance weight bolt 22 that additional balance weight 20 is installed on standard equilibration block 14, as shown in Figure 7, the bolt head 22B of additional balance weight bolt 22 can be accommodated in the large footpath inserting hole portion 21B2 of additional balance weight bolt insertion hole 21B, identical with it, the bolt head 22B of additional balance weight bolt 22 can be accommodated in the inserting hole portion, large footpath of additional balance weight bolt insertion hole 21A.Therefore, it is possible to prevent the bolt head 22B of additional balance weight bolt 22 from giving prominence to from the rear surface 20A of additional balance weight 20.Its result, can protect additional balance weight bolt 22, and can improve the aesthetics of additional balance weight 20.

In addition, citing illustrates and utilizes the through hole running through and be arranged at additional balance weight 20 to form the situation of additional balance weight bolt insertion hole 21A, 21B and standard equilibration block bolt plug hole 23A, 23B, 23C.But, the present invention is not limited to this, such as variation as shown in Figure 8, also can be made up of the cut hole by cutting channel-shaped upward to be formed from the bottom of additional balance weight 20 additional balance weight bolt insertion hole 21A ', 21B ', the plug of standard equilibration block bolt hole 23A ', 23B ', 23C '.

In addition, in embodiments, as engineering machinery, be illustrated for crawler hypraulic excavator 1.But the present invention is not limited to this, other the engineering machinery of installing the formation adding balance weight in the rear surface of the standard equilibration block of such as wheeled hydraulic excavator etc. also can be widely used in.

Claims (4)

1. an engineering machinery, comprising: can lower traveling body voluntarily; Rotatably be located at the upper rotating body on this lower traveling body; And be located at the apparatus for work of toe lateral of this upper rotating body,
Described upper rotating body possesses: be formed as supporting structure and have the rotating frame of balance weight installing component in rear portion side; Standard equilibration block bolt is used to be installed on the standard equilibration block of described balance weight installing component; And use additional balance weight bolt to be installed on the additional balance weight of the rear surface of this standard equilibration block according to the operating type of described apparatus for work, the feature of this project machinery is,
Described standard equilibration block is arranged: for the standard equilibration block bolt insertion hole making described standard equilibration block bolt insert; And be configured at the position different from this standard equilibration block bolt insertion hole and the additional balance weight bolt fastening hole of fastening described additional balance weight bolt,
Described additional balance weight is arranged: be configured at the position opposed with described additional balance weight bolt fastening hole and make the additional balance weight bolt insertion hole that described additional balance weight bolt is inserted; And be configured at the position opposed with described standard equilibration block bolt insertion hole and the standard equilibration block bolt plugging described standard equilibration block bolt plugs hole,
Left and right direction in the top-left position of separating and upper-right position respectively arrange the described standard equilibration block bolt insertion hole that is located at described standard equilibration block respectively, and the downside between the standard equilibration block bolt insertion hole that these are left and right arranges the described standard equilibration block bolt insertion hole that is located at described standard equilibration block
Described additional balance weight is positioned at by bolt fastening hole the leg-of-mutton region that connects three described standard equilibration block bolt insertion holes and arranges one leftward position, right positions are each respectively.
2. engineering machinery according to claim 1, is characterized in that,
Described standard equilibration block upper and lower to pars intermedia arrange and be used for inspection hole that the carrying equipment being equipped on described rotating frame is checked, the described standard equilibration block bolt insertion hole being located at described standard equilibration block is located at than described inspection hole position more on the lower with described additional balance weight bolt fastening hole.
3. engineering machinery according to claim 1 and 2, is characterized in that,
Described additional balance weight bolt insertion hole is formed by inserting hole portion, large footpath and path inserting hole portion, this inserting hole portion, large footpath extends to the centre position of the thickness direction of described additional balance weight in the mode of the rear surface being positioned at described additional balance weight and bottom becomes end difference, this path inserting hole portion is arranged from the through front side to described additional balance weight of the end difference in this inserting hole portion, large footpath, the bolt shaft of described additional balance weight bolt is inserted through path inserting hole portion, and the bolt head of described additional balance weight bolt is accommodated in inserting hole portion, described large footpath.
4. engineering machinery according to claim 1, is characterized in that,
Being located at the described additional balance weight bolt insertion hole of described additional balance weight and described standard equilibration block bolt, to plug hole be run through the through hole being arranged at described additional balance weight, or the cut hole formed by the part cutting described additional balance weight.
CN201210213882.0A 2011-06-27 2012-06-25 Engineering machinery CN102852182B (en)

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