JPS623321Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mudguard cover for an outrigger used to secure a vehicle body during work in a working machine such as an excavator.

1 and 2 are general views of a buckethoe type excavating machine, in which an upper swing frame 3 is installed on a lower running frame 2 having wheels 1, and a backhoe type excavator is installed on the front part of the upper swing frame 3. A drilling rig 4 is equipped. Thus, the outriggers 5, 5 according to the present invention are attached to the rear left and right sides of the lower vehicle body 2 so as to be vertically movable via the fulcrums 4, 4, and are also connected to hydraulic cylinders ( A rod (not shown) is connected to the outriggers 5, 5, and by operating the hydraulic cylinder, the outriggers 5, 5 are rotated downward during work to fix the vehicle body. It is designed to be stored in a state where it is rotated upward as shown in the figure. Then, above the outriggers 5, 5, as shown in FIG. The lower traveling vehicle body 2 is connected to the pivot pin portions 7, 7 provided on the side pieces 6b,
and the tip thereof is connected to the outriggers 5, 5.
By protruding from the upper part in a bridging manner, the upper part of the outriggers 5, 5 is covered. Further, as the outriggers 5, 5 rotate, the mudguard covers 6, 6 rotate in the vertical direction due to the upward force of the outriggers 5, 5 and the own weight of the covers 6, 6 themselves. There is. As shown in FIG. 3, by protruding the proximal end portion 8 of the cover 6 above the flat surface of the vehicle body 2, it functions as a stopper to prevent the mudguard cover 6 from springing upward during driving. I have it. Further, this proximal end protruding portion 8 also has the function of preventing earth and sand from entering the back side of the cover 6.

In the conventional structure as described above, by bending both end portions of the mudguard cover 6 as described above, the gap 9 between the cover 6 and the vehicle body 2 is expanded to the left and right sides where the pivot pin portion 7 is provided. There were drawbacks such as the dirt that became large between the two side pieces 6b and 6b and got around to the main body part of the cover 6, that is, the back side of the top plate 9a during work, and entered the cylinder rod part of the outriggers 5, 5. Moreover, if dirt accumulates on the lower side of the overhang 6, the mudguard cover 6
There was a problem in that when the upper plate 6a was rotated upward, the upper surface plate 6a bit dirt and sand, causing the overhang 6 to deform.

In view of these problems, the present invention was developed with the aim of preventing the intrusion and encroachment of earth and sand.

In the present invention, as a technical means to solve the problem, a pipe is installed between the left and right sides 15, 15 of the mudguard cover 6 at the pivot joint part of the mudguard cover 6.
7 is fixedly installed, and the cover 6 extends over the circumferential wall surface of the pipe 17 between the left and right pieces 15, 15.
It is characterized in that it is in close contact with the top plate 14 of the pipe 17, and that the other circumferential wall surface portion of the pipe 17 is similarly arranged close to the vehicle body 2.

The configuration of the present invention will be described below based on FIG. 4 showing one embodiment. Note that in FIG. 4 and subsequent figures, the same parts as in the prior art shown in FIGS. 1 to 3 are given the same reference numerals, and explanations of overlapping parts will be omitted.

As shown in FIG. 4, a connecting piece 10 is protruded from the upper surface of the outrigger 5, and the tip of a cylinder rod 11 protruding from the center of the vehicle body 2 is connected to this connecting piece 10. When the cylinder rod 11 moves in and out, the outrigger 5 is 2 from the solid line position in the figure.
Rotate within the position range indicated by the dotted chain line. On the other hand, above the outriggers 5 and cylinder rods 11, a mounting piece 13 is provided upright on the flat surface 12 of the vehicle body 2, and the mudguard cover 6 according to the present invention is pivotally attached to this mounting piece 13 via a pin 7. Ru.

Therefore, to explain the structure of this mudguard cover 6, the mudguard cover 6 is shown in FIGS. 5 and 6.
As shown in the figure, both left and right ends of the top plate 14 are bent downward to form side pieces 15, 15, and at the base end, a pin hole 16 is inserted between the side pieces 15, 15.
16 is bored, and a slightly larger diameter pipe 17 that is concentric with the pin holes 16, 16 and covers the space between the pin holes 16, 16 is connected to the side pieces 15, 15 at both ends thereof. It is permanently installed. 18,18
is a reinforcing piece fixed to the inside of the side pieces 15, 15. The upper surface of this pipe 17 is tightly attached to the back surface of the upper surface plate 14 of the cover 6, thereby eliminating a gap between the two, and the upper surface plate 14 is attached to the side of the overhanging portion 8 that protrudes from this close contact portion. An open portion 19 is formed by notching.

And the mudguard cover 6 configured as described above.
, attach both pieces 15, 15 of the base end to both mounting pieces 1
Pin 7 fitted inside 3 and 13 and inserted into both
The tip of the pipe 17, which is fixedly installed between the side pieces 15 and 15, is attached to the vehicle body 2. are brought close to each other, thereby making the gap 9 between them extremely small, and in this way,
A pipe 17 covers the gap between the mudguard cover 6 and the vehicle body 2, and prevents earth and sand from entering the cylinder rod 11 side. In addition, as in the past, the overhanging portion 8
protrudes upward from the flat part 12 of the vehicle body 2 and plays the role of a stopper, but as mentioned above, this part of the top plate 14 is cut out, so this part consists only of the side plates 15, 15 and the reinforcing piece 18. Therefore, even if earth and sand accumulates in this part, the side plates 15, 15, etc. can easily penetrate into the earth and sand, thereby eliminating the inconvenience caused by getting caught in the earth and sand.

As described above, in the present invention, a pipe is fixedly installed between the left and right sides of the mudguard cover at the mudguard cover pivot portion, and the circumferential wall portion of the pipe is connected to the cover that straddles between the left and right sides. By making the pipe adhere closely to the top plate, and also arranging the other circumferential wall surface of the pipe close to the vehicle body,
The gap between the main body of the mudguard cover, that is, the top plate, and the vehicle body is almost completely covered by the pipe, making it possible to prevent earth and sand from entering the cylinder rod side during work. Moreover, by bringing the circumferential wall surface of the pipe into close contact with the top plate of the mudguard cover, earth and sand will not enter below that part, so that the proximal side of the mudguard cover that protrudes above the fuselage can be prevented from entering. The overhang may simply have the function of a stopper, and the overhang can be formed by cutting out the top plate and using only the side pieces to prevent dirt from getting caught in the overhang. This has the advantage of preventing deformation.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the excavator, Fig. 2 is a rear view, Fig. 3 is a front view of the mudguard cover attachment part showing a conventional example, and Fig. 4 is an outrigger and mudguard cover showing an embodiment of the present invention. Front view of the mounting part,
FIG. 5 is a plan view of the base end of the mudguard cover, and FIG. 6 is a sectional view taken along the line A--A in FIG. 5. 2... lower running vehicle body, 5... outrigger, 6
...Mudguard cover, 7...Mudguard cover pivot pin, 8...Mudguard cover protrusion, 14...Top plate, 15...Mudguard cover side piece, 17...Pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] Above the outrigger which is attached to the vehicle body so as to be able to move up and down, the base end of the mudguard cover is similarly pivotally attached to the vehicle body, and its tip protrudes above the outrigger, and the base end side In the structure in which the projecting portion projects upward from the flat surface of the vehicle body, a pipe is fixed between the left and right sides of the mudguard cover at the mudguard cover pivoting portion, and the circumferential wall portion of the pipe is connected to the left and right sides of the mudguard cover. An outrigger mudguard device for a working machine, characterized in that the outrigger mudguard device is in close contact with the upper surface plate of the cover that extends between the two sides, and that the other circumferential wall surface portion of the pipe is also arranged close to the vehicle body.