JP5351819B2 - Fender device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fender device that facilitates the repair or replacement works, even though the fender is damaged by crashing against an obstacle, so as to be cost-efficient. <P>SOLUTION: A fender 13 covering the lower part of an inspection passage 10 is installed in the side face of a rotary frame 4 composing the upper machinery of a work machine. The fender 13 is divided into a plurality of divided fenders 13a and 13b. A decorative sheet support frame 20 composing the divided fenders 13a and 13b is provided separately from the support part of the passage 10, and is installed in the outside of the rotary frame 4 by bolts 22. A decorative sheet 21 is provided in the decorative sheet support frame to form the divided fenders 13a and 13b. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a fender device that covers a device such as a hydraulic pipe, an electrical wiring, a tank and the like provided at a lower portion of a passage and disposed on the upper swing body in a working machine having a path on a side portion on the upper swing body.

  Among working machines having upper rotating bodies such as construction machines such as hydraulic excavators and cargo handling machines, large working machines have a passage to the side of the upper rotating body for inspection of equipment mounted on the upper rotating body. (Step) is provided from the front part on the upper swing body to the counterweight mounting part at the rear end. As shown in Patent Document 1, the lower part of the passage covers hydraulic piping, electrical wiring, tanks, etc. arranged at the lower part of the passage, and a fender as a cover swirls upward to improve the appearance. It is fixed to the revolving frame constituting the body with bolts or the like.

  FIG. 11 is a rear view showing a fender and passage mounting structure of a rear portion of a conventional ultra-large hydraulic excavator, FIG. 12 is a plan view showing the passage, and FIG. 13 is a side view showing the fender. 11 to 13, reference numeral 50 denotes a turning frame of the upper turning body, and 51 denotes a support frame bolted to the side surface portion. A passage 52 is welded to the upper edge of the support frame 51, and a fender 53 is welded to the outer edge of the support frame 51. The fender 53 covers hydraulic piping, electrical wiring, tanks and the like that pass through the lower part of the passage. One fender 53 is provided at the lower portion of the portion corresponding to the rear portion of the upper swing body, that is, the side portion of the power unit 54 mounted on the swing frame 50. Reference numeral 55 denotes a handrail attached to the outside of the passage 52.

JP 11-131529 A

  As described above, in the conventional working machine having the fender 53 on the side surface of the upper turning body, the fender 53 on the side surface of the upper turning body collides with an obstacle near the working machine and is recessed during the turning operation during work. A damage accident has occurred. This fender damage accident frequently occurs on the rear side surface, which is a blind spot as seen from the cab, that is, on the rear part of the upper swing body.

  Conventionally, when the fender 53 is damaged, it is necessary to replace the entire fender 53, or to melt the damaged part and weld a new part, and the repair work is not easy. For this reason, there are many situations where the work is performed with the fender damaged and the appearance is poor.

  Further, when an external force is applied to the fender 53, the support frame 51 is also damaged thereby, and the passage 52 provided on the support frame 51 is also damaged, so that the passage 52 needs to be repaired or replaced, and an economic loss is also caused. growing.

  SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a fender device that can be easily repaired or replaced even if the fender collides with an obstacle and is damaged, and can be made economical.

The fender device according to claim 1 is:
In the fender device that covers the lower part of the passage provided on the side surface of the revolving frame constituting the upper revolving structure of the work implement,
The fender is composed of a plurality of divided fenders arranged adjacent to each other in the front-rear direction,
Each of the divided fenders is provided separately from the support portion of the passage, and a decorative plate support frame that is bolted to the outside of the swivel frame;
A decorative board provided separately from the passage is provided outside the decorative board support frame.

The fender device according to claim 2 is the fender device according to claim 1,
Together with the veneer divided fender adjacent through member with a gap or cushioning material to which the upper portion constituting said passage, that the veneer each other of split fender adjacent the front and rear adjoining across the gap or cushioning material Features.

The fender device according to claim 3 is the fender device according to claim 1 or 2,
The split fender is provided at a lower portion on the side of a rear portion of a revolving frame that is a power unit mounting portion of the upper revolving structure.

  According to the invention of claim 1, since the fender provided on the side surface portion of the upper swing body is divided into a plurality of parts, when some of the fenders are damaged by collision with an obstacle, only the damaged divided fender is repaired or replaced. do it. For this reason, repair and replacement can be performed on a small scale of the divided fender, and repair and replacement can be facilitated. In addition, the scale of the fender to be repaired and replaced can be reduced, so that economy can be achieved.

  In addition, the decorative plate support frame for attaching the divided fender is configured separately from the passage, and the decorative plate is configured separately from the passage, so that external force applied to the divided fender from an obstacle is difficult to reach the passage. Also, damage to the passage is prevented. For this reason, the labor and labor of repairing and exchanging the passage are reduced, and further economy can be achieved.

According to the invention of claim 2, the split fender, the upper is configured to adjacent through member with a gap or cushioning material constituting the passage, dividing the fender each other also has a configuration in which adjacent through the gap or cushioning material Therefore, transmission of force from the divided fender to the passage when the fender collides with an obstacle during turning and transmission of force between the divided fenders are effectively prevented, and the spread of damage can be effectively suppressed.

  According to the invention of claim 3, since the fender at the rear part of the revolving frame on the side of the upper revolving structure that is highly likely to collide with an obstacle is separated from the divided structure and the passage composed of the plurality of divided fenders. The above effects are effectively exhibited.

It is a side view which shows the main-body part of the working machine which shows one embodiment of this invention. It is a top view which shows the apparatus arrangement | positioning in the upper revolving body of the working machine of this Embodiment. It is a top view explaining the collision with the obstruction at the time of turning of the working machine of this Embodiment. It is a top view which shows the attachment structure of the channel | path in the hydraulic power unit mounting part of the turning frame of this Embodiment. It is a side view which shows the hydraulic power unit of the working machine of this Embodiment, and the fender of the lower part. It is the elements on larger scale of FIG. It is a rear view which shows the attachment structure of the fender and channel | path of the working machine of this Embodiment. It is the elements on larger scale of FIG. It is a rear view which shows other embodiment of the attachment structure of the fender and channel | path of this invention. FIG. 10 is a side view of FIG. 9. It is a rear view which shows the conventional fender and the attachment structure of a channel | path. It is a top view which shows the channel | path of FIG. It is a side view which shows the fender of FIG.

  FIG. 1 is a side view of a working machine body showing an embodiment of a fender of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a plan view for explaining the working state of the working machine. This embodiment shows the case where the working machine is an ultra-large hydraulic excavator. This super-large hydraulic excavator has a weight of 120 t or more. Reference numeral 1 denotes a lower traveling body. In this embodiment, the lower traveling body is a crawler type. However, the present invention can also be applied to a lower traveling body having a wheel type.

  Reference numeral 2 denotes a turning device installed on the traveling frame of the lower traveling body 1, and 3 denotes an upper turning body installed on the traveling frame via the turning device 2. The upper swing body 3 is configured by mounting a power unit 5, an operator cab 6, a counterweight 7 and the like on a swing frame 4 (see FIGS. 5 and 7) which is a base frame. The power unit 5 includes an engine provided as a prime mover and a hydraulic pump driven by the engine. An electric motor may be used as a prime mover. As shown in FIG. 3, a working device such as an articulated front 9 having a bucket 8 attached to the tip is attached to the turning frame 4 constituting the upper turning body 3.

  In FIG. 2, reference numeral 10 denotes a passage called a step provided from the front part on the right side of the upper swing body 3 to the counterweight 7 on the rear part. Reference numeral 10A denotes a passage provided on the left side of the upper swing body 3 or around the cab 6 or the like. As shown in FIG. 1, handrails 11 for preventing fall are provided along the outer sides of these passages 10 and 10A. In FIG. 1, reference numerals 12 and 13 denote fenders provided at the front part and the lower part of the rear part of the passage 10 on the side surface of the upper swing body 3. These fenders 12 and 13 cover equipment such as hydraulic piping, electrical wiring, or tanks arranged on the upper swing body 3.

  In the present embodiment, the rear fender 13 is configured by a plurality (two in the present embodiment) of divided fenders 13a and 13b. In the present embodiment, the front fender 12 is also constituted by a plurality of divided fenders 12a to 12e.

  4 is a plan view showing the power unit mounting portion of the revolving frame of the present embodiment, FIG. 5 is a side view showing the power unit mounting portion and the fender 13 below the power unit mounting portion, FIG. 6 is a partially enlarged view thereof, and FIG. FIG. 8 is a partially enlarged view of the rear view showing the mounting structure of the passage 13 and the passage 10. As shown in FIGS. 5 and 7, the turning frame 4 of the upper turning body 3 is formed by fixing a frame such as the mounting frame 4b of the power unit 5 on a main frame 4a serving as a mother body by welding or the like.

  As shown in FIGS. 4 to 8, on the outer surface of the mounting frame 4 b of the power unit 5, a plurality of (three in the illustrated example) seat screws (mounting seats having screw holes) 15 for attaching the passage 10 are provided. Welded. The passage 10 includes a flat plate portion 10a for mounting the anti-slip plate 10e, a vertical plate portion 10b for attaching the passage 10 with a bolt 16 screwed into the seat screw 15, and a vertical plate portion 10c covering the outside. 10d is a reinforcing plate welded to the flat plate portion 10a and the vertical plate portions 10b and 10c.

6 to 8, reference numeral 17 denotes a seat screw fixed to the lower surface of the front end portion of the power unit mounting frame 4b by welding. Reference numeral 18 denotes a fender mounting bracket for mounting the divided fenders 13a and 13b. As shown in FIG. 8, each bracket 18 has an upper flat plate portion 18a, and a vertical plate portion 18b, and a reinforcing plate 18c welded thereto. The bracket 18 is attached to the power unit mounting frame 4b by inserting the bolt 19 through the bolt insertion hole of the flat plate portion 18a and screwing it into the screw hole of the seat screw 17.

  As shown in FIGS. 6 and 8, the divided fenders 13 a and 13 b include a decorative plate support frame 20 and a decorative plate 21 fixed to the outer edge of the decorative plate support frame 20 by welding or the like. Each of the divided fenders 13a and 13b is configured such that one decorative plate 21 is fixed to a plurality of decorative plate support frames 20 (two in the illustrated example). An attachment piece 20a is provided at the inner end of the decorative plate support frame 20. As shown in FIG. 8, the bolt 22 is inserted into the bolt insertion hole provided in the attachment piece 20a and the bolt insertion hole provided in the vertical plate portion 18b of the bracket 18. Is inserted into the nut 23 and fastened, whereby the divided fenders 13 a and 13 b are attached to the bracket 18.

  As shown in FIG. 6, a gap g1 of about 1 cm, for example, is formed between the decorative plates 21 and 21 of the divided fenders 13a and 13b to prevent transmission of force. As shown in FIG. 8, a gap g2 is also formed between the upper portion of the decorative plate 21 and the vertical plate portion 10c on the outer surface of the passage 10 with the same purpose.

  As described above, in the present embodiment, the fender 13 on the side surface of the upper swing body 3 is divided into the plurality of divided fenders 13a and 13b. Therefore, as shown in FIG. , 13b is damaged by the collision with the obstacle 24, only the damaged divided fender 13a or 13b may be repaired or replaced. For this reason, repair and replacement are performed on a small scale of the divided fenders 13a and 13b, and repair and replacement are facilitated. Further, since the fender 13 to be repaired or exchanged is a small scale of the divided fenders 13a and 13b, economy can be achieved.

  Further, the decorative plate support frame 20 of the divided fenders 13 a and 13 b is configured separately from the support portion of the passage 10, and the divided fenders 13 a and 13 b are vertically plate portions 10 c whose upper portions are constituent members of the passage 10. Therefore, the external force applied from the obstacle 24 to the divided fenders 13a and 13b does not easily reach the passage 10, and damage to the passage 10 is also prevented. For this reason, the labor and labor of repairing and replacing the passage 10 are also reduced, and further economy can be achieved.

  Further, in this embodiment, the fender 13 at the rear part of the revolving frame 4 on the side surface of the upper revolving structure 3 that is highly likely to collide with the obstacle 24 has a divided structure and a structure separated from the passage 10. Therefore, the effect of repairing the fender 13 and reducing replacement members is effectively exhibited.

  In this embodiment, the gap g1 is provided between the decorative plates 21 and 21 of the divided fenders 13a and 13b, and the gap g2 is formed between the decorative plate 21 and the passage 10, thereby transmitting force. Although it is prevented, a cushioning material made of soft rubber, synthetic resin or the like that easily closes the gap may be provided.

  FIG. 9 is a rear view showing another embodiment of the present invention, and FIG. 10 is a side view of the same. In this embodiment, the power unit mounting frame 4b is not protruded outward from the side surface of the main frame 4a. Further, in this embodiment, the fender 13 is divided into three divided fenders 13a to 13c, and the decorative plate support frame 20 of the divided fenders 13a to 13c is attached to the side surface of the main frame 4a with bolts 26. Reference numeral 21 denotes a decorative plate of each of the divided fenders 13a to 13c. The passage 10 adjacent to the hydraulic power unit 5 is separated from the divided fenders 13a to 13c, and is attached to a seat screw 27 provided on the upper portion of the main frame 4a by bolts 28. Reference numerals 10a to 10e are portions having functions equivalent to those of the same reference numerals of the passage 10 in the embodiment. Reference numeral 11 denotes a handrail provided outside the passage 10.

  Also in this embodiment, a gap g1 is formed between the decorative plates 21 and 21 of the divided fenders 13a to 13c, and a gap g2 is also formed between the decorative plate 21 of the divided fenders 13a to 13c and the passage 10. ing. Also in this embodiment, the same effect as in the above embodiment can be obtained.

  Although the present invention has been described above with reference to the embodiment, the present invention can be applied to a load handling machine having a different front structure and various other work machines in addition to a hydraulic excavator. Moreover, when implementing this invention, a specific structure can be variously changed in the range which is not restricted to the said embodiment and does not deviate from the summary of this invention.

1: Lower traveling body, 2: Turning device, 3: Upper turning body, 4: Turning frame, 4a: Main frame, 4b: Power unit mounting frame, 5: Power unit, 6: Driver's cab, 7: Counterweight, 8: Bucket , 9: Articulated front, 10, 10A: Passage, 11: Handrail, 12, 13: Fender, 13a-13c: Split fender, 15: Seat screw, 16: Bolt, 17: Seat screw, 18: Fender mounting bracket 19: bolt, 20: decorative plate support frame, 21: decorative plate, 22: bolt, 23: nut, 24: obstacle, 26, 28: bolt, 27: seat screw

Claims (3)

In the fender device that covers the lower part of the passage provided on the side surface of the revolving frame constituting the upper revolving structure of the work implement,
The fender is composed of a plurality of divided fenders arranged adjacent to each other in the front-rear direction,
Each of the divided fenders is provided separately from the support portion of the passage, and a decorative plate support frame that is bolted to the outside of the swivel frame;
A fender device comprising: a decorative plate provided separately from the passage on the outside of the decorative plate support frame. The fender device according to claim 1, wherein
Together with the veneer divided fender adjacent through member with a gap or cushioning material to which the upper portion constituting said passage, that the veneer each other of split fender adjacent the front and rear adjoining across the gap or cushioning material Features a fender device. The fender device according to claim 1 or 2,
The fender device according to claim 1, wherein the split fender is provided at a lower portion on a side of a rear portion of a turning frame which is a power unit mounting portion of the upper turning body.

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