CN205077540U - Construction machinery's revolving frame - Google Patents

Construction machinery's revolving frame Download PDF

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Publication number
CN205077540U
CN205077540U CN201520798451.4U CN201520798451U CN205077540U CN 205077540 U CN205077540 U CN 205077540U CN 201520798451 U CN201520798451 U CN 201520798451U CN 205077540 U CN205077540 U CN 205077540U
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CN
China
Prior art keywords
support unit
rotating frame
skirtboard
slit
cabin
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201520798451.4U
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Chinese (zh)
Inventor
恒吉刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar SARL
Caterpillar Inc
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Caterpillar Inc
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Publication date
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Publication of CN205077540U publication Critical patent/CN205077540U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a stress is prevented that the skirtboard from cracking by the dispersion that construction machinery's revolving frame makes the time spent skirtboard and produces receiving torsion load. Revolving frame (22) contain: bottom plate (30), stood and set up on bottom plate (30) and follow a pair of vertical plate of the left and right sides (32, 34) that the fore -and -aft direction extends, from outstanding a plurality of left supporting components (36) of surface direction extension left that are located left vertical plate (32), and be connected and follow left skirtboard (40) that the fore -and -aft direction extends respectively with the extension overhang of a plurality of left supporting components (36). It carries out the back driver's cabin supporting components (36b) that supports to the rear side of driver's cabin (24) to contain in a plurality of left supporting components (36). Back driver's cabin supporting components (36b) has front panel (56), backplate (58), top surface board (60) and bottom surface board (62). Be formed with along control the first slit (60d) that the direction is extended long and thinly at top surface board (60).

Description

The rotating frame of building machinery
Technical field
The utility model relates to the rotating frame for building machineries such as hydraulic crawler excavators.
Background technology
In general, the hydraulic crawler excavator as the typical example of building machinery is roughly made up of such as lower component: body of can advancing from the bottom of row cutting; Rotatably be equipped on the upper rotating body advanced on body in bottom; And pitching motion is connected to the work jibs device of upper rotating body freely.
Upper rotating body possesses the rotating frame forming frame structure body, is equipped at this rotating frame: the driver's cabin taken for driver; The equipment holding room of various equipment such as collecting motor, heat interchanger etc.; And the counterweight etc. of weight balancing is obtained relative to work jibs device.
Rotating frame possesses: base plate; Erect and be arranged on base plate and the pair of right and left stringer board extended along the longitudinal direction; Outstanding multiple left support unit is extended from the external surface left direction of the stringer board being positioned at left side; Outstanding multiple right support unit is extended from the external surface right direction of the stringer board being positioned at right side; Be connected respectively and the left skirtboard extended along the longitudinal direction with the extension jag of multiple left support unit; And be connected respectively and the right skirtboard extended along the longitudinal direction with the extension jag of multiple right support unit.
In hydraulic crawler excavator, driver's cabin is disposed in the front left side of rotating frame in most instances, the rear cabin mount parts of the rear side of cabin mount parts and supporting driver room before multiple left sides support unit comprises the front side of supporting driver room.Further, driver's cabin by front cabin mount parts and rear cabin mount parts from lower side bearing.
When hydraulic crawler excavator obliquely, unevenly etc. overturning, hydraulic crawler excavator takes the danger of the driver in driver's cabin in order to avoid extruding, expects the space can guaranteed to a certain extent in driver's cabin in this case.Therefore, in hydraulic crawler excavator, the rigidity of the parts forming driver's cabin can be improved and limit between extension jag that limiting part that driver's cabin exceeds the range displacement of regulation is disposed in driver's cabin and rear cabin mount parts (for example, referring to patent document 1.)。
[prior art document]
[patent document]
[patent document 1] Japanese Unexamined Patent Publication 2004-189089 publication
The technical problem that prior art exists
In the rotating frame of above-mentioned hydraulic crawler excavator, limiting part is disposed between the extension jag of driver's cabin and rear cabin mount parts, so can improve the rigidity of rear cabin mount parts relative to bending load.As a result, rear cabin mount parts become the parts that not only rigidity relative to torsional load high relative to the rigidity of bending load is also high.Therefore, when having acted on to rotating frame the torsional load produced because of external force, such as, when left skirtboard from front portion backwards portion upward inclination and distortion and right skirtboard from front portion, portion's torsional load that inclination and distortion is such is downwards applied to rotating frame backwards time, after left skirtboard produces, cabin mount parts are the distortion that starting point tilts upward towards rear portion.Like this, left skirtboard may with the link position of rear cabin mount parts or its near, stress is concentrated and is cracked.
Utility model content
The utility model completes in view of the problem of above-mentioned prior art, provides a kind of rotating frame of building machinery, and the stress that skirtboard produces when receiving torsional load effect is disperseed, and prevents skirtboard from cracking.
For the technological means of technical solution problem
According to the utility model, a kind of rotating frame of building machinery is provided, possesses: base plate; Erect and be arranged on this base plate and the pair of right and left stringer board extended along the longitudinal direction; Outstanding multiple left support unit is extended from the external surface left direction of this stringer board being positioned at left side; Outstanding multiple right support unit is extended from the external surface right direction of this stringer board being positioned at right side; Be connected respectively and the left skirtboard extended along the longitudinal direction with the extension jag of the plurality of left support unit; And be connected respectively and the right skirtboard extended along the longitudinal direction with the extension jag of the plurality of right support unit, the feature of the rotating frame of described building machinery is, the plurality of left support unit or the plurality of right support unit comprise the rear cabin mount parts supported the rear side of the driver's cabin taken for driver, and these rear cabin mount parts have: the front panel arranged at spaced intervals at fore-and-aft direction and backplate; By the top panel that the upper end of this front panel is connected with the upper end of this backplate; And by the bottom panel that the lower end of this front panel is connected with the lower end of this backplate, be formed with the first slit slenderly extended in left-right direction at this top panel.
Preferably, this first slit is positioned at the fore-and-aft direction central authorities of this top panel.Preferably, be formed with limiting part installing hole at the extension jag of this top panel, the fore-and-aft direction position of this first slit and the fore-and-aft direction aligned in position of this limiting part installing hole.Preferably, the second slit slenderly extended in left-right direction is formed at this bottom panel of these rear cabin mount parts.
The rotating frame of the present utility model stress that skirtboard produces when receiving torsional load effect is disperseed all the more, prevents skirtboard from cracking.
Accompanying drawing explanation
Fig. 1 is the lateral view of the hydraulic crawler excavator possessing the rotating frame formed according to the utility model.
Fig. 2 is the stereogram from the rotating frame shown in upper forward observation Fig. 1.
Fig. 3 is the stereogram of a part of observing the rotating frame shown in Fig. 1 from upper rear.
Fig. 4 is the stereogram of a part of observing the rotating frame shown in Fig. 1 from lower rear.
Fig. 5 is the sectional view observed from the A-A direction Fig. 3.
Detailed description of the invention
Below, with reference to accompanying drawing, the hydraulic crawler excavator enumerating representatively building machinery is example, is described in detail the embodiment of the rotating frame of building machinery of the present utility model.
Be described with reference to Fig. 1.Represent that overall hydraulic crawler excavator is roughly made up of such as lower component by label 2: body 4 of can advancing from the bottom of row cutting; Rotatably be mounted in the upper rotating body 6 advanced on body 4 in bottom; Pitching motion is connected to the work jibs device 8 of upper rotating body 6 freely.Hydraulic crawler excavator 2 makes work jibs device 8 carry out pitching motion when carrying out the digging operation of sandy soil etc., makes upper rotating body 6 carry out spinning movement relative to bottom body 4 of advancing, thus can carry out the digging operation of sandy soil etc.
Work jibs device 8 is roughly made up of such as lower component: pitching motion is connected to the swing arm 10 of the front side of upper rotating body 6 freely; The arm 12 be rotatably connected with the front of swing arm 10; The power tool 14 be rotatably connected with the front of arm 12; Make that swing arm 10 carries out the pair of right and left boom cylinder 16 of pitching motion, 16(only illustrates left side); Make the arm oil cylinder 18 that arm 12 swings; And the power tool oil cylinder 20 that power tool 14 is rotated.
Upper rotating body 6 possesses the rotating frame 22 forming frame structure body.Be equipped at rotating frame 22: the driver's cabin 24 taken for driver; Contain motor, equipment holding room 26 for the various equipment such as heat interchanger of the cooling water of cooled engine; The counterweight 28 of weight balancing is obtained relative to work jibs device 8; The fuel tank (not shown) of fuel-in-storage; And store the operating oil tank (not shown) etc. of working oil.About their equipping position, driver's cabin 24 is disposed in the front left side of rotating frame 22, and equipment holding room 26 is disposed in the rear of driver's cabin 24, and counterweight 28 is disposed in the rear end of rotating frame 22, and fuel tank and operating oil tank are disposed in the right side of rotating frame 22.In addition, the fore-and-aft direction used in the explanation of this manual and left and right directions are the fore-and-aft direction and left and right directions observed from the driver in the driver's cabin 24 taken in Fig. 1.
Be described with reference to Fig. 2.Rotating frame 22 possesses: base plate 30; Erect and be arranged on base plate 30 and the pair of right and left stringer board 32,34 extended along the longitudinal direction at spaced intervals at left and right directions; Outstanding multiple left support unit 36 is extended from the external surface left direction of the stringer board 32 being positioned at left side; Outstanding multiple right support unit 38 is extended from the external surface right direction of the stringer board 34 being positioned at right side; Be connected respectively and the left skirtboard 40 extended along the longitudinal direction with the extension jag of multiple left support unit 36; And be connected respectively and the right skirtboard 42 extended along the longitudinal direction with the extension jag of multiple right support unit 38.
Base plate 30 and stringer board 32,34 are the structural members from the large load of the effects such as work jibs device 8, are formed by the steel plate of wall thickness.Base plate 30 is formed as tabular and extends along the longitudinal direction.Stringer board 32,34 is formed as triangle and lower end is engaged with the upper surface of base plate 30 by welding.Swing arm connecting pin bores 32a, the 34a of the cardinal extremity connecting swing arm 10 via connecting pin is formed at the top of stringer board 32,34.In addition, boom cylinder connecting pin bores 32b, the 34b of the cardinal extremity connecting boom cylinder 16,16 via connecting pin is formed in the front end of stringer board 32,34.
Front portion between stringer board 32,34, is equipped roughly along the hang plate 44 that the upper end of stringer board 32,34 extends obliquely.The lower end of hang plate 44 is engaged with the upper surface of base plate 30 by welding, and the left and right directions both ends of hang plate 44 engage with the inner surface of stringer board 32,34 respectively by welding.In the lower end side of hang plate 44, be formed with the opening 44a of the quadrilateral shape passed through for the hydraulic piping (not shown) etc. be connected with boom cylinder 16,16.In addition, be equipped with at the rear side of stringer board 32,34 two engine mounts 46,46 installed for motor respectively at spaced intervals at fore-and-aft direction, its more rear side be equipped respectively the counter-weight bracket 48 of counterweight 28 be installed.
Multiple left support unit 36 is the parts supported driver's cabin 24 and heat interchanger etc., and multiple right support unit 38 is the parts supported fuel tank and operating oil tank etc.By flat steel plate, bending machining, multiple left support unit 36 and multiple right support unit 38 become that the section of left and right directions is the steel plate of L-shaped respectively, bending machining becomes the section of left and right directions be the steel plate of U-shaped or their combination and formed.
Left skirtboard 40 and right skirtboard 42 are form the left side outer rim of rotating frame 22 and the decorative element of right side outer rim respectively, are formed by the steel plate of thin-walled.The above-below direction both ends of left skirtboard 40 and right skirtboard 42 inwards bend respectively.
In the present embodiment, driver's cabin 24 is disposed in the front left side of rotating frame 22, multiple left support unit 36 comprise the front side of driver's cabin 24 is supported before cabin mount parts 36a, with the rear cabin mount parts 36b that the rear side of driver's cabin 24 supported.Front cabin mount parts 36a and rear cabin mount parts 36b is formed by the steel plate that rigidity is higher than other support unit.
Be described with reference to Fig. 2 and Fig. 3.Front cabin mount parts 36a has: bending machining becomes the section shape of left and right directions to be L-shaped and has the header board 50 of front face 50a and bottom surface sections 50b; And by welding the upper plate 52 engaged with the upper end of the front face 50a of header board 50.
The right-hand member of header board 50 by solder joints in the extension jag forwards extending outstanding link 54 from the cardinal extremity be connected with the upper surface front end of base plate 30.In addition, the left end of header board 50 is engaged with the inner surface front end of left skirtboard 40 by welding.
Upper plate 52 horizontal-extending in fact, has widening portion 52a, 52a of the width expansion of fore-and-aft direction respectively at its left and right directions both ends.Be formed with Shockproof rack installing hole 52b, 52b respectively at widening portion 52a, 52a, the Shockproof rack (not shown) flexibly supported the front side of driver's cabin 24 is installed at Shockproof rack installing hole 52b, 52b.The rear side of widening portion 52a, 52a bends downward respectively and passes through welding and engages with the bottom surface sections 50b of header board 50.In addition, the right-hand member of upper plate 52 is engaged with the front end of link 54 by welding, and the left end of upper plate 52 is engaged with the inner surface front end of left skirtboard 40 by welding.
Be described with reference to Fig. 3 ~ Fig. 5.Rear cabin mount parts 36b has: the front panel 56 arranged at spaced intervals at fore-and-aft direction and backplate 58; By the top panel 60 that the upper end of front panel 56 is connected with the upper end of backplate 58; And by bottom panel 62 that the lower end of front panel 56 is connected with the lower end of backplate 58.
Front panel 56 and top panel 60 are formed by a steel plate, the upper end of front panel 56 and the front end of top panel 60 continuous.Top panel 60 horizontal-extending in fact, has widening portion 60a, 60a of the width expansion of fore-and-aft direction respectively at its left and right directions both ends.Be formed with Shockproof rack installing hole 60b, 60b respectively at widening portion 60a, 60a, the Shockproof rack (not shown) flexibly supported the rear side of driver's cabin 24 is installed at Shockproof rack installing hole 60b, 60b.The rear side of widening portion 60a, 60a is bent downward respectively and is engaged with base plate 30 and bottom panel 62 by welding.At the extension jag of top panel 60, be formed with limiting part installing hole 60c in the front of Shockproof rack hole, outside 60b, the limiting part (not shown) limiting driver's cabin 24 and exceed the range displacement of regulation is installed at limiting part installing hole 60c.Be equipped with the stiffener 61 being formed with opening on the top of limiting part installing hole 60c, the opening of stiffener 61 is formed along the periphery of limiting part installing hole 60c.
In addition, the first slit 60d slenderly extended in left-right direction is formed at top panel 60.First slit 60d is positioned the fore-and-aft direction central authorities of the part be between the widening portion 60a of top panel 60, the fore-and-aft direction position of the first slit 60d and the fore-and-aft direction aligned in position of limiting part installing hole 60c.Preferably the size of the left and right directions of the first slit 60d is formed as far as possible longlyer.In addition, the first slit 60d and limiting part installing hole 60c links unlike Fig. 3, but also can link.
The lower end of front panel 56 is engaged with the upper surface of base plate 30 and the upper surface of bottom panel 62 by welding.In addition, the right-hand member of front panel 56 and top panel 60 is engaged with the external surface of the stringer board 32 in left side by welding, and the left end of front panel 56 and top panel 60 is engaged with the inner surface of left skirtboard 40 by welding.In addition, the lower end of front panel 56 and the upper surface of base plate 30 may not pass through solder joints.
Backplate 58 have extend in left-right direction back part 58a, with rearward extend outstanding extension protuberance 58b from the right-hand member of back part 58a, the section of the above-below direction of backplate 58 bends to L-shaped.The back part 58a of backplate 58 arranges along the rear end of the part between the widening portion 60a of top panel 60, and extends protuberance 58b and arrange along the left end of the right widening portion 60a of top panel 60.The upper end of back part 58a, with extend the upper end of protuberance 58b and extend jag by solder joints in top panel 60.In addition, the lower end of backplate 58 is engaged with the upper surface of base plate 30 and the upper surface of bottom panel 62 by welding, and the left end of backplate 58 is engaged with the inner surface of left skirtboard 40 by welding.
The the second slit 62a slenderly extended in left-right direction is formed at bottom panel 62.At the extension jag of bottom panel 62, be formed when limiting part is installed on the limiting part installing hole 60c of top panel 60 for its through hole 62b passed.In addition, the right-hand member of bottom panel 62 is engaged with the left end of base plate 30 by welding, and the left end of bottom panel 62 is engaged with the inner surface of left skirtboard 40 by welding.In addition, the second slit 62a and through hole 62b links as shown in Figure 4, but also can not link.
The effect of the rotating frame 22 of the hydraulic crawler excavator 2 shown in Fig. 1 ~ Fig. 5 as above is described.Rotating frame 22 of the present utility model is formed with the first slit 60d slenderly extended in left-right direction at the top panel 60 of rear cabin mount parts 36b, so can reduce the rigidity of rear cabin mount parts 36b relative to torsional load.In addition, first slit 60d slenderly extends in left-right direction, so the difference of the value of the section coefficient of the above-below direction of cabin mount parts 36b is less after be not formed with the situation of the first slit 60d at top panel 60 compared with, the reduction of the rigidity relative to bending load can be suppressed.Therefore, rotating frame 22 of the present utility model can not damage the effect of limiting part, and the stress that left skirtboard 40 produces when receiving torsional load effect is disperseed, and prevents left skirtboard 40 from cracking.
In addition, rotating frame 22 of the present utility model is formed with the second slit 62a slenderly extended in left-right direction at the bottom panel 62 of rear cabin mount parts 36b, so rear cabin mount parts 36b can be suppressed relative to the reduction of the rigidity of bending load, and the rigidity of rear cabin mount parts 36b relative to torsional load can be reduced further.As a result, the rotating frame 22 of the present utility model stress that left skirtboard 40 produces when receiving torsional load effect is disperseed all the more, prevents left skirtboard 40 from cracking.
In addition, for the structure of the support units such as front cab legs, rear cab legs, being not limited to the structure illustrated in embodiment, such as, can be that the rectangular box of the section of the left and right directions be made up of front panel, backplate, top panel and bottom panel constructs such structure.In addition, for the shape of each parts of formation support unit, also be not limited to the shape illustrated in embodiment, by flat steel plate, bending machining, each parts such as can become that the section shape of left and right directions is the steel plate of L-shaped, bending machining becomes the section shape of left and right directions to be that the steel plate etc. of U-shaped is formed.

Claims (5)

1. a rotating frame for building machinery, possesses: base plate; Erect and be arranged on this base plate and the pair of right and left stringer board extended along the longitudinal direction; Outstanding multiple left support unit is extended from the external surface left direction of this stringer board being positioned at left side; Outstanding multiple right support unit is extended from the external surface right direction of this stringer board being positioned at right side; Be connected respectively and the left skirtboard extended along the longitudinal direction with the extension jag of the plurality of left support unit; And be connected respectively and the right skirtboard extended along the longitudinal direction with the extension jag of the plurality of right support unit,
It is characterized in that,
The plurality of left support unit or the plurality of right support unit comprise the rear cabin mount parts supported the rear side of the driver's cabin taken for driver, and these rear cabin mount parts have: the front panel arranged at spaced intervals at fore-and-aft direction and backplate; By the top panel that the upper end of this front panel is connected with the upper end of this backplate; And by the bottom panel that the lower end of this front panel is connected with the lower end of this backplate, be formed with the first slit slenderly extended in left-right direction at this top panel.
2. the rotating frame of building machinery according to claim 1, is characterized in that,
This first slit is positioned at the fore-and-aft direction central authorities of this top panel.
3. the rotating frame of building machinery according to claim 1 and 2, is characterized in that,
Limiting part installing hole is formed with, the fore-and-aft direction position of this first slit and the fore-and-aft direction aligned in position of this limiting part installing hole at the extension jag of this top panel.
4. the rotating frame of building machinery according to claim 1 and 2, is characterized in that,
The second slit slenderly extended in left-right direction is formed at this bottom panel of these rear cabin mount parts.
5. the rotating frame of building machinery according to claim 3, is characterized in that,
The second slit slenderly extended in left-right direction is formed at this bottom panel of these rear cabin mount parts.
CN201520798451.4U 2014-10-17 2015-10-16 Construction machinery's revolving frame Expired - Fee Related CN205077540U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-213041 2014-10-17
JP2014213041A JP6262118B2 (en) 2014-10-17 2014-10-17 Construction machine swivel frame

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