JP3269059B2 - Upper swing type construction machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a car body lower plate.
About the upper pivoting construction machinery provided with a swivel guard.

[0002]

2. Description of the Related Art Conventionally, an upper swing type construction machine such as a hydraulic excavator requires a swivel guard to be mounted as shown in FIG.
As shown in FIG. 9, a boss 12 is fixed to the upper portion of the peripheral portion of the car body lower plate 2 by a welded portion 5 , and the lower surface of the boss 12 and the upper surface of the peripheral portion of the disk portion 9 of the swivel guard 1 are connected. opposed to fit it heavy, and inserting bolts towards the tapped hole of the boss 12 from the through hole of the swivel guard 1, by fixing screwed tip portion 7 of the bolt into the tapped hole, the swivel guard 1 car that has attached to the body lower plate 2.

[0003]

SUMMARY OF THE INVENTION A swivel guard 1 is mounted.
Only install such a boss 12 on the upper swing type
Ri putting is comprised many types of car bodies problem Oh Tsu <br/>, a first object of the present invention to solve the problem. It is a second object of the present invention to facilitate repair of a damaged portion of a swivel guard 1 or the like when the swivel guard 1 or the like is damaged during use of an upper swing type construction machine such as a hydraulic shovel.

[0004]

The invention according to claim 1 is
A lower traveling body, an upper-handed times capable of pivoting relative to the undercarriage
Body, the hydraulic power source of the upper revolving unit, and the traveling motor of the lower traveling unit.
For turning the upper revolving unit
Swivel joint, which is the center of rotation, and provided on the undercarriage
Mounted on the car body lower plate and the car body lower plate
The swivel guard has a peripheral part
Slot on the car body lower plate side from the slot.
And the upper part of the swivel guard slot
The plate with tapped holes and the swivel guard
Insert the long hole from the bottom of the long hole
With a bolt whose tip is screwed into the tapped hole.
Is the swivel guard step and the plate with tapped holes.
-The car is located in the space formed between the lower plate side end and the body.
To screw in the bolt with the body lower plate sandwiched
Secure the swivel guard to the lower plate of the car body and
When removing Lugard, bolts to the plate with tapped holes
With the screws loosened, transfer the bolts by guiding the long holes.
By moving it, the lower plate of the car body with tapped holes
Swivel down the side edge of the car body from the lower plate.
Upper swiveling construction that detaches the guard from the lower plate of the car body
It is a machine.

[0005] The invention according to claim 2 is based on claim 1.
Swivel guards on head-turning construction machines
Part that is higher than the other part, and
Provide a space on the side and screw it into the tapped plate
Bolts have swivel heads located below the slots.
Located in the space above the lower surface of the
It does not protrude.

[0006] The invention according to claim 3 is based on claim 1.
On a plate with a tapped hole
Female screw provided separately from the tapped hole
With a male screw that engages with the female screw of the
And an operating shaft for moving the port.
Remove the operating shaft from the perforated plate and swivel
When the guard is disengaged, set the operating shaft on the plate with tapped holes.
To move the plate with tapped holes
You.

[0007] The invention according to claim 4 is a device according to claim 1.
Of a plate with a tapped hole
-This end is located on the opposite side of the end
A resilient member for urging the part on the lower plate of the car body.
At this time, the tabs urged on the lower plate of the car body by the elastic members
And the swivel end of the plate with
Car body in the space formed between the steps of Lugard
When the lower plate is sandwiched and the swivel guard comes off, the elastic member
To retract the plate with tapped holes against
You.

The invention according to claim 5 is a car body lower plate.
And the swivel guard attached to the car body lower plate
The swivel guard has a long hole
And the car body lower plate side and the other side downward from the long hole
The formed protrusions and the space formed between these protrusions
And a swivel guard disposed above the oblong hole
Plate with tapped hole and under the long hole of swivel guard
Through the long hole to the tapped hole of the tapped plate
A bolt with a screwed tip, the head of the bolt
Is located below the long hole and the swivel guard
In the space above the lower surface of the projection formed at
Do not protrude downward, always use swivel guard
Of the plate with the protrusion of the
Car body lower plate sandwiched in the space formed between the end
Swivel garment by screwing bolts
When the swivel guard is detached from the car body
Loosens the bolts into the tapped plate
The bolt by moving the bolts
Attach the end of the plate with the
Retract the swivel guard from the bottom of the
This is an upper swing type construction machine that is detached from the lower plate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to FIGS.
This will be described in detail with reference to the embodiment shown in FIGS.

FIG . 10 is a top swing type construction machine according to the present invention.
To which the swivel guard attachment / detachment device is applied
Excavator shows the position of the swivel guard
You. 17 is a swivel joint and 18 is a turning motor.

FIG . 11 is a top swing type construction machine according to the present invention.
Of the swivel guard 1
And the lower traveling body showing the mounted state of the swivel guard 1
31. For details of the mounting state of the swivel guard 1, see FIG.
A description will be given of various embodiments shown in FIGS.

FIG . 12 is a top swing type construction machine according to the present invention.
The position of the mounting part 35 of the swivel guard 1 on the machine
With the hydraulic source (not shown) on the upper revolving unit 33 and the lower part
A swivel connecting the traveling body 31 to a hydraulic device including the traveling motor 36
With the upper revolving body 33 at 36
It shows that it can be turned 0 degrees, the upper revolving body 33 and the lower
Hydraulic components between the main parts such as
You. 32 is a hydraulic motor, 34 is a slewing bearing, 37 is an oil feed tube
And 38 are endless tracks.

[0013] The embodiment shown in FIGS. 1 to 3, the scan
Ivel guard 1 is attached to the car body lower plate 2
You. The swivel guard 1 has an elongated hole 8 in the peripheral portion.
A step 10 is provided on the side of the lower plate 2 of the car body from the elongated hole 8.
Have been. Touch the upper part of the long hole 8 of the swivel guard 1
A plate 3 with a hole is provided.

The tips 7 of the plurality of bolts 4 are swivel
With a tapped hole through the slot 8 from below the slot 8
It is screwed into the tapped hole of the plate 3. Figure 2
Reference numeral 11 denotes a washer for the head 6 of the bolt 4.

And, usually, the step portion of the swivel guard 1
10 and the end of the plate 3 with tapped holes on the lower side of the car body 2
Car body lower plate 2 is sandwiched in the space formed between
By screwing the bolt 4 in the inserted state, the swivel
The guard 1 is fixed to the car body lower plate 2 and the swivel
When removing the guard, bolt to plate 3 with tapped holes.
With the screw of 4 loosened, the bolt is guided by the slot 8
4 to move the plate 3
On either et retraction of the car body bottom plate 2 the end of the body lower plate 2 side
And remove the swivel guard 1 from the car body lower plate 2.
Let

[0016] That is, normally, mosquitoes from the position with the long hole 8 of the peripheral portion of the swivel guard 1 as shown in FIG. 1
-A step 10 provided on the body lower plate 2 side and screwed through the slot 8 at the upper part of the swivel guard 1
With tapped hole plate 3 was fixed by Mareta bolts 4
Nde write sandwiched in the portion of the car body lower plate 2 in the space portion formed between the car body lower plate 2 side of the end, under carbody
Connect the part of the plate 2 and the peripheral part of the swivel guard 1,
Can be coupled without detachment.

[0017]on the other hand, Swivel guard1Car body lower plate
From twoWhen detaching, tap as shown in Figure 2
Plate with hole3Tapped holeTobolt4Tip ofPart 7
With the screw loosened,Swivel guard1Rim
Long hole8Multiple bolts in the guide4ToCar body lower plate 2
In the direction of retreatMove multiple bolts4With the move
Even those multiple bolts4Tip ofPart 7In a loose state
Plate with combined tapped holes3To move the
Bell guardOne stepDepartmentTenTap located in the upper part of
Plate with hole3ofCar body lower plate 2 side endReceded
Let's swivel guard1The car body bottom plate2Detached from
LetWhile being separated from the car body lower plate 2.
Evegard 1 can be easily connected to car body lower plate 2
You.

Here, as shown in FIG. 11, when a portion to be attached to the car body lower plate 2 is formed on the periphery of the circular swivel guard 1 , the car body lower plate 2
Form a 3 points or more mounting portion mounting portion to
Rukoto at the peripheral portion of the swivel guard 1 can be attached to the Ca Bodi lower plate 2 from any position in the range of 360 degrees.

The embodiment shown in Figure 4, provided with a long hole in the appropriate position on the peripheral portion of the swivel guard 1, the upper position of the elongated hole, has a long hole which overlaps with the elongated hole of the swivel guard 1 The member is placed and the member having the elongated hole is welded to the swivel guard 1 . 5 is the welded part
You. The height of the slot having the welded member having said slot is the same dimension as the thickness of the car body lower plate 2, the length
Two bolts can be inserted through the holes . Place the tapped plate 3 at a position above the long hole, and use the swivel guard 1
From the lower position of the long hole, remove the long hole of the welded member.
Through it, threaded free the tip of the two bolts inserted through toward the tap hole plate with 3 disposed above the position of the elongated hole in the tapped hole of the motor <br/>-up perforated plate 3.

[0020] Then, normally, et al provided in the car body bottom plate 2 side of the position where a long hole in the peripheral portion of the swivel guard 1
Plate with tapped holes located at the top of the step 10
3 and the car body lower plate 2 is fitted into the space defined by the end of the car body lower plate 2 and the swivel guard.
1 is fixed to the lower plate 2 of the car body .

On the other hand , the swivel guard 1 is attached to the lower plate of the car body.
When disengaging from 2 in the form <br/> state where loosen the screwing of the tip portion of the two bolts into the tapped holes of the tapped holes with plates 3, with the guide of the elongated hole of the peripheral portion of the scan Iberugado 1, moving the two bolts, by moving the tap hole plate with 3 coupled in a loose state in the tip of their two bolts with the movement of the two bolts, located in the upper portion of the stepped portion 10 Car body of plate 3 with tapped holes
The swivel guard 1 is removed from the car body lower plate 2 by retreating the end of the lower plate 2 so that the upper end of the step portion 10 has no end of the plate 3 with a tapped hole on the side of the car body lower plate 2. Ru is detached.

The elongated hole of this embodiment shown in FIG. 4, the position with the long holes in the peripheral portion of the swivel guard 1 to be higher than other parts of the swivel guard 1, the peripheral edge portion of the swivel guard 1 two of bolt head portion 6 that is screwed into the tapped holes of the tapped holes with plate 3 is above the a position
And together is positioned on the lower side of the slot of the peripheral portion of the swivel guard 1, those that have been so as not to protrude the lower side is positioned in the space portion of the upper side Ri by the lower surface of the swivel guard 1 <br/> It is.

The embodiment shown in Figure 5, a car body lower plate from a position with a long hole in the peripheral portion of the swivel guard 1
Guard part as a protruding part downward on two sides and opposite side
13 to form a guard bolt head portion 6, those moth
The swivel guard forms a space between the
1 of the peripheral portion of the head portion 6 of the two bolts screwed into the tapped hole of the tapped hole plate with 3 in the above a location elongated hole, the lower side of the long hole before Symbol peripheral portion of the swivel guard 1 together we are positioned and formed to scan Iberugado 1
It is located in the space portion of the upper side Ri by the lower surface of the guard portion 13 so as not to protrude the lower side.

The garage of the swivel guard 1 is always
Car body lower plate 2 with plate part 13 and plate 3 with tapped holes
The lower part of the car body plate 2
Screw the bolt with the
Lugard 1 can be fixed to the lower plate 2 of the car body.
When the bell guard 1 is detached,
With the bolts loosened,
The plate 3 with tapped holes
The end on the side of the lower plate 2 is retracted from above the lower plate 2 of the car body.
And remove the swivel guard 1 from the car body lower plate 2
Can be

The embodiment shown in Figure 6, the pre-tapped hole of the tap <br/> flop perforated plate operating shaft 14 of the actuating shaft for moving the power strips perforated plate 3
It is provided detachably on the port 3 .

A female screw for attaching and detaching a shaft 14 for operating a plate with a tapped hole is provided in the plate 3 with a tapped hole.
A male screw Ru provided at the distal end of the tap hole with plate operating shaft 14 to be screwed into the internal thread.

And, at all times, the shaft 14 for operating the plate with the tapped hole is detached from the plate 3 with the tapped hole , and the swivel guard 1 is attached to the lower plate 2 of the car body.
When disengaging from combines the tapped hole plate with actuating shaft 14 in the tapped hole plate with 3, loosen it <br/> Ji inclusive bolt tip into tapped hole tapped hole plate with 3 in state, by moving the Rutotomoni with tapped hole plate 3 is moved a plurality of bolts in the guide of the elongated hole, the position where a long hole in the peripheral portion of the swivel guard 1
The side of the plate 3 with the tapped holes located on the upper portion of the step provided on the side of the car body lower plate 2 side of the car body lower plate 2
The end is moved backward, and disengaging the swivel guard 1 from the car body bottom plate 2.

The embodiment shown in Figure 7, by positioning the Tamahatsu member 16 at the opposite end portions of the power strips perforated plate 3 of the car body bottom plate 2 side, always with tapped hole plate 3
End of the car body bottom plate 2 side is obtained by biasing on the car body bottom plate 2 a.

[0029] Then, normally, et al provided in the car body bottom plate 2 side of the position where a long hole in the peripheral portion of the swivel guard 1
The lower body plate 2 is fitted into a space defined by the stepped portion 10 and the end of the plate 3 with a tapped hole on the side of the lower body 2 of the tapped hole, and the screw of the bolt is inserted.
Included by fixing the swivel guard 1 to the car body bottom plate 2, whereas, when the release <br/> to de swivel guard 1 from the car body bottom plate 2, against the elastic member 16, with tapped hole plate 3 a is retracted, Ru to disengage the swivel guard 1 from the car body lower plate 2. In FIG. 7, 15 is a tap.
It is a plate inclined part with a hole.

Thus, under the car body of the excavator
The plate 2 has a special machined part in the contact part with the swivel guard 1.
The swivel guard 1 is always hydraulically driven without forming
Excavator can be fixed to the car body lower plate 2 with bolts 4
When the swivel guard 1 comes off, the bolt 4
Play with tapped holes loosely connected to the tip 7
The swivel guard 1 by moving the
Step provided on the car body lower plate 2 side from the position of 8
Of plate 3 with tapped holes located in the upper part of 10
Retract the end of the car body lower plate 2 side, and
Part of the plate 3 with tapped holes in the car body lower plate 2 side
Swivel guard 1 with no ends
Remove from lower plate 2.

[0031]

According to the upper-swing construction machine according to the first aspect, a step provided on the lower plate side of the car body from the position where the elongated hole of the peripheral portion of the swivel guard is always provided ;
Positioned above the swivel guard and through the slot
Space portion formed between the carbody lower plate end of the tap hole with plate bound by it Flip filled-in bolt Te to sandwich the portion of the car body lower plate So, the portion of the car body lower plate Connect the periphery of the swivel guard,
There is an effect that they can be combined without leaving. When removing the swivel guard from the lower plate of the car body, loosen the bolts into the tapped holes of the plate with tapped holes .
Moving the bolt by the guide of the elongated hole in metastate, by moving the tap hole with plate coupled in a loose state on the tip of their bolts with the movement of the bolt, the elongated hole of the peripheral portion of the swivel guard Plate below the car body
Retract the end of the plate with tapped holes located on the upper part of the step provided on the side of the car body lower plate side ,
Together capable of disengaging the swivel guard from the car body lower plate, the effect of a swivel guard being is disengaged readily coupled to the car body bottom plate from the car body lower plate. In addition, a swivel guard mounting device or a swivel guard mounting tool for mounting the swivel guard on the lower plate of the car body is not particularly required on the lower plate side of the car body, and there is no need for modification. That
There is an effect that can be prevented . In addition, since a plate with a tapped hole requiring precision and a screwed portion of a bolt to be screwed into the tapped hole are not provided on the lower plate side of the car body, these are provided on the swivel guard side. Thus, there is an effect that the allowable range of the manufacturing error of the swivel guard can be increased and the allowable range of the deformation during the operation can be widened. Also, when attaching and removing the swivel guard to and from the car body lower plate, there is no need to attach or remove bolts, just loosen or tighten, and there is no need for positioning work which is one of the cumbersome work In addition, there is an effect that only one worker can work and no parts are lost. And from these, the damaged part
Repair becomes easy.

According to the second aspect of the present invention, a plug with a tapped hole is provided.
The head of the bolt screwed into the rate is swivel guard
Projection below the lower surface can be prevented.

According to the third aspect of the present invention, the swivel guard
When detaching, connect the operating shaft to the plate with tapped holes.
To move the tapped plate.

According to the fourth aspect of the present invention, the elastic member
Of a plate with tapped holes biased on the lower plate of the car body
The lower end of the car body and the step of the swivel guard
Car body lower plate can be sandwiched.

According to the invention of claim 5, the head of the bolt is
Project below the lower surface of the swivel guard projection
And prevent the swivel guard from protruding at all times.
And the end of the plate with tapped holes on the lower side of the car body
Car body lower plate is sandwiched in the space formed between
Screw the bolt in this state to cover the swivel guard.
ー Can be fixed to the lower plate of the body.
Loose screwing of bolt into plate with tapped holes
Tap by moving the bolt by guiding the long hole in the state
Attach the end of the plate with holes to the lower side of the car body
Retract from the lower plate and place the swivel guard under the car body
It can be detached from the board.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which a swivel guard is attached to a lower plate of a car body by a swivel guard attaching / detaching device in an upper-slewing construction machine according to the present invention.

FIG. 2 is a view showing a state in which the swivel guard is attached to the lower plate of the car body by the swivel guard attaching / detaching device in the upper swing type construction machine shown in FIG.
FIG. 6 is a longitudinal sectional view showing a state in which the end on the lower plate side is retracted to remove the swivel guard from the lower plate of the car body.

FIG. 3 is a perspective view of a state in which the swivel guard is attached to a lower plate of the car body by the attaching / detaching device of the swivel guard in the upper swing type construction machine of FIG. 1 as viewed from a lower surface side.

FIG. 4 is a top swing type construction machine according to the present invention , which is different from FIG.
In a longitudinal sectional view showing a state of attaching the swivel guard to the car body bottom plate by swivel guard attachment apparatus.

FIG. 5 is a vertical sectional view showing a state in which the swivel guard is attached to the lower plate of the car body by the swivel guard attaching / detaching device in the upper swing type construction machine according to the present invention , which is different from FIGS. FIG.

[6] FIGS. 1, 4, the upper slewing type construction machine according to another aspect of the present invention and FIG. 5, the attachment apparatus of the swivel guard
Ri is a longitudinal sectional view showing a state of attaching the swivel guard to the car body bottom plate.

FIG. 7 shows a swivel guard attached to a lower plate of a car body by a swivel guard attaching / detaching device in an upper swing type construction machine according to the present invention , which is different from FIGS. 1, 4, 5, and 6; It is a longitudinal cross-sectional view showing the state.

FIG. 8 is a conceptual view showing a mounting position of a swivel guard attaching / detaching device of the upper swing type construction machine, and is a rear view of the swivel guard of the conventional swivel guard attaching / detaching device of the upper swing type construction machine.

9 is a longitudinal sectional view taken along line AA of FIG. 8,
It is a longitudinal section of the attachment and detachment device of the conventional swivel guard of the upper revolving construction machine.

The upper pivot construction machine according to the invention; FIG,
FIG. 3 is a perspective view of a power shovel to which the swivel guard attaching / detaching device is applied, in which the position of the swivel guard can be seen.

The upper pivot construction machine according to Figure 11 the present invention,
FIG. 4 is a perspective view of the lower traveling body showing a use state of the swivel guard attaching / detaching device, and showing an attached state of the swivel guard.

The upper pivot construction machine according to the present invention; FIG,
It is a conceptual diagram showing the position of the mounting part of the swivel guard, connecting the hydraulic source including the hydraulic source of the upper revolving unit and the traveling motor of the lower traveling unit, and turning the upper revolving unit around the swivel joint part as the revolving center. It is a figure showing that it can be rotated 360 degrees, and is a diagram showing a hydraulic-related configuration between main parts such as an upper revolving unit and a lower traveling unit.

[Explanation of symbols]

1 for tapped hole plate operating as a guard portion 14 actuating shaft as the swivel guard 2 8 long hole 10 step portion 13 protrusion head of the car body lower plate 3 with tapped hole plate 4 bolts 6 volts Shi
Yafuto 16 elastically member 17 swivel joint 31 lower carriage 33 the upper rotating body 36 traveling motor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02F 9/12

Claims (5)

(57) [Claims] When the upper revolving unit is turned by connecting a lower traveling unit, an upper revolving unit capable of revolving with respect to the lower traveling unit, and a hydraulic device including a hydraulic source of the upper revolving unit and a traveling motor of the lower traveling unit. A swivel joint serving as a turning center of the car body, a car body lower plate provided on the undercarriage, and a swivel guard mounted on the car body lower plate.The swivel guard has an elongated hole provided in a peripheral portion thereof, It has a step provided on the lower plate side of the car body from the long hole, and a plate with a tapped hole placed above the long hole of the swivel guard, and the long hole is inserted from below the long hole of the swivel guard A space formed between the stepped portion of the swivel guard and the end of the tapped plate on the side of the lower plate of the car body at all times. To -The swivel guard is fixed to the car body lower plate by screwing a bolt with the body lower plate sandwiched, and when the swivel guard is detached, the long hole guide is provided with the bolt screwed into the plate with tapped holes loosened An upper swing type construction machine characterized in that the end of the plate with the tapped holes on the side of the lower plate of the car body is retracted from above the lower plate of the car body by moving the bolt, and the swivel guard is detached from the lower plate of the car body. . 2. A swivel guard according to claim 1, wherein a portion having a long hole is provided higher than other portions, a space is provided on a lower surface side of the portion having a long hole, and a bolt screwed into the plate with a tapped hole is provided with a long hole. The upper swing type construction machine according to claim 1, wherein a head located below the swivel guard is located in a space above the lower surface of the swivel guard and does not protrude below the lower surface. 3. A tapped hole plate comprising: a female screw provided separately from the tapped hole; and an actuating shaft having a male screw screwed into the tapped hole of the tapped hole female plate for moving the tapped hole plate. The operating shaft is always detached from the tapped plate, and when the swivel guard is detached, the operating shaft is connected to the tapped plate to move the tapped plate. 2. The upper swing type construction machine according to 1. 4. A resilient member which is located on a side opposite to the end of the plate with a tapped hole on the side of the car body lower plate and which constantly urges this end onto the lower plate of the car body. The car body lower plate is sandwiched in the space formed between the end of the plate with a tapped hole urged on the lower plate of the car body by the elastic member and the step of the swivel guard and the swivel guard, 2. The upper swing type construction machine according to claim 1, wherein when the guard is disengaged, the tapped plate is retracted against the resilient member. 5. A car body lower plate, and a swivel guard attached to the car body lower plate, wherein the swivel guard has a long hole provided in a peripheral portion, and a side of the car body lower plate and a side opposite to the long hole. A plate with a tapped hole disposed above the long hole of the swivel guard, and a plate having a space formed between the protrusions, and a lower portion of the swivel guard. And a bolt whose tip is screwed into a tapped hole of a plate with a tapped hole by passing through the elongated hole from above, and the head of the bolt is located below the elongated hole, and a protrusion formed on the swivel guard is provided. It is positioned in the space above the lower surface so that it does not protrude downwards. Normally, the body is placed in the space formed between the protrusion of the swivel guard and the end of the plate with tapped holes on the lower side of the car body. The swivel guard is fixed to the car body lower plate by screwing the bolt in the state where the lower plate is sandwiched, and when the swivel guard is detached, guide the long hole with the bolt screwed into the plate with tapped holes loosened. An upper swing type construction machine characterized in that the end of the plate with the tapped holes on the side of the lower plate of the car body is retracted from above the lower plate of the car body by moving the bolt, and the swivel guard is detached from the lower plate of the car body. .