JPH107038A - Rubber track and upper swing type crawler dump equipped with this rubber track - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a rubber crawler dump capable of scraping out earth and sand and snow accumulated on a track frame, and an upper revolving crawler dump to which the rubber crawler is mounted. SOLUTION: A lower traveling body 10 having rubber crawler belts 20 on the lower left and right sides of a vehicle, and is rotatably mounted on an upper part of the lower traveling body 10 and at least a part of the left and right rubber crawler belts 20 in a plan view is inserted. And an upper revolving body having a wide turning range, and an upper rubber crawler belt 20 between the guide wheel 12 and the starting wheel 13 disposed before and after the track frame 11 of the lower traveling body 10 has a predetermined distance from the upper revolving body. In the upper turning crawler dump that rotates apart, the scraping member 26 that discharges the earth and sand and the snow accumulated between the track frame 11 and the upper rubber crawler belt 20 is connected to the core metal 22 of the rubber crawler belt 20. It is integrally formed and protruded in advance on the non-ground surface side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber crawler, and more particularly to a rubber crawler for a revolving crawler dump, and more particularly to a rubber crawler having a scraping member for discharging sediment and snow accumulated on a truck frame and a rubber crawler. The present invention relates to a mounted upper swing type crawler dump.

[0002]

2. Description of the Related Art An upper turning crawler dump is widely used as a work vehicle which is excellent in running performance on a rough land or a wetland and has good workability in transporting earth and sand. FIG. 3 shows a side view of a general upper swing type crawler dump. In the figure, a lower traveling body 10 having a rubber crawler belt 20 on the left and right sides is provided below the upper revolving crawler dump,
A revolving upper revolving unit is provided above the lower traveling unit 10. Guide wheels 12 and starting wheels 13 are provided before and after the track frame 11 of the lower traveling body 10, and upper and lower wheels 15 and 14 are provided above and below, respectively. And these guide wheel 12 and starting wheel 1
3. A rubber crawler belt 20 is wound around the upper wheel 15 and the lower wheel 14. On the upper part of the frame 16 of the lower traveling body 10, a revolving frame 2 of the upper revolving body is rotatably mounted via a revolving circle 1. Further, a driver's cab 3 is mounted in front of an upper portion of the revolving frame 2, and a vessel 4 is mounted on the rear portion so as to be able to undulate. Here, the right and left rubber crawler belts 20, 20 in plan view are located within the turning range of the revolving frame 2.
Is configured to enter at least a part of

[0003] Such an upper swiveling crawler dump,
In order to enable traveling at a higher speed as compared with a normal crawler type vehicle (for example, a crawler type power shovel), the lower rolling wheel 14 of the lower traveling body 10 is made a bogie mechanism to improve the riding comfort during traveling. I have. As a result, the height h of the lower traveling body 10 becomes higher than the lower traveling body of a normal crawler type vehicle. Therefore, the gap S between the rubber crawler belt 20 and the lower end of the revolving frame 2 is reduced in order to keep the total height of the upper revolving crawler dump at the time of transportation by a trailer vehicle or the like to a predetermined height or less.

On the other hand, earth and sand, snow, or the like may accumulate on the upper surface of the track frame 11, so that the upper rubber crawler belt 20 between the guide wheel 12 and the starting wheel 13 may be lifted upward and inflated. is there. In such a case,
If the gap S is small, the lower end of the revolving frame 2 of the upper swing body and the upper surface of the rubber crawler belt 20 may interfere with each other. Therefore, it is strongly demanded that earth and sand, snow, and the like do not accumulate on the upper surface of the track frame 11.

[0005] Hitherto, many crawler tracks have been proposed which can easily discharge earth and sand, snow, and the like that accumulate inside the crawler track of a crawler-type vehicle to the outside. No. 107185. Japanese Patent Laying-Open No. 48-67436 proposes a crawler belt in which a scraping body such as earth and sand is protruded and provided on the inner side of a vehicle body on a non-ground surface side of a crawler plate body constituting a part of the crawler belt. This scraping body is fixed to the non-ground surface side of the footwear plate body by welding or the like. Further, Japanese Utility Model Laid-Open No. 4-107185 proposes a crawler track for effectively discharging mud and soil extruded on the inner peripheral surface of the elastic crawler track. In this crawler belt, the inner peripheral surface of the belt body is inclined so as to become lower as going to both sides, and furthermore, ribs integrally formed of a plurality of elastic bodies such as rubber on both sides in the width direction of the lower wheel rail surface at a constant interval. The outer end of the rib is inclined so as to be located rearward of the inner end with respect to the traveling direction of the band main body, and the height of the rib decreases from the inside to the outside.

[0006]

However, the above-mentioned conventional crawler has the following problems. For crawlers composed of rubber tracks as described above,
A device provided with a scraping body as disclosed in JP-A-48-67436 has not been proposed so far. In addition, if it is necessary to add the equivalent function of a scraping body to a normal crawler without this scraper by retrofitting, this scraping body can be retrofitted to a normal crawler track. It is possible. However, it cannot be retrofitted to a crawler made of a rubber crawler belt as described above. In Japanese Utility Model Application Laid-Open No. 4-107185, the height of the ribs is low and the strength is low because the ribs are integrally formed of an elastic body. Not enough to scrape off.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. A rubber crawler belt capable of scraping off soil and snow deposited on a track frame and an upper-revolving crawler dump to which the rubber crawler belt is mounted are provided. It is intended to provide.

[0008]

Means for Solving the Problems, Functions and Effects In order to achieve the above-mentioned object, the invention according to claim 1 uses a metal core 2
The rubber crawler belts 2 are arranged in parallel in the annular direction at a pitch at which they engage with the starting wheel 13, and a buried rubber crawler belt is provided with a scraping member 26 for discharging earth and sand and snow protruding from the non-ground surface side of the rubber crawler belt 20. And

According to the first aspect of the present invention, since the scraping member protrudes from the non-ground surface side of the rubber crawler belt, the rubber crawler belt travels downwardly of a crawler-type vehicle such as an upper turning crawler dump. By using it on the body, it becomes possible to scrape and discharge the earth and sand and snow accumulated on the truck frame. This prevents the upper rubber crawler belt between the guide wheel and the starting wheel from lifting upward. As a result, even if the gap between the lower end portion of the upper vehicle body and the rubber crawler belt is reduced, the rubber crawler belt does not interfere with each other, so that safety is improved. In addition, since the height during transportation can be reduced, the transportability can be improved.

[0010] Further, the invention according to claim 2 provides the core metal 22.
Are arranged in parallel with each other in the annular direction at a pitch that meshes with and engage with the starting wheel 13. In the rubber crawler belt, a scraping member 26 that discharges earth and sand and snow is integrally formed on the cored bar 22 in advance and is protruded. And

According to the second aspect of the present invention, since the scraping member is protruded from the non-ground surface side of the core metal of the rubber crawler belt, the rubber crawler crawler-type vehicle such as an upper swiveling crawler dump. By using the undercarriage of
It becomes possible to scrape and remove the earth and sand and snow accumulated on the truck frame. This prevents the upper rubber crawler belt between the guide wheel and the starting wheel from lifting upward. In addition, since the scraping member is protruded from the metal core, sufficient strength can be secured. As a result, even if the gap between the lower end portion of the upper vehicle body and the rubber crawler belt is reduced, the rubber crawler belt does not interfere with each other, so that safety is improved. In addition, since the height during transportation can be reduced, the transportability can be improved.

Further, the invention according to claim 3 provides a lower traveling body 10 having rubber crawler belts 20 on the lower left and right sides of the vehicle, and is mounted on the upper part of the lower traveling body 10 so as to be pivotable, and the left and right sides are viewed in plan. An upper revolving structure having a revolving range into which at least a part of the rubber crawler belt 20 can enter, and an upper revolving body between the guide wheel 12 and the starting wheel 13 disposed before and after the track frame 11 of the lower traveling body 10. In a revolving crawler dump in which the rubber crawler belt 20 rotates at a predetermined distance from the upper revolving structure, a scraping member 26 for discharging soil and snow accumulated between the track frame 11 and the upper rubber crawler belt 20. Of the rubber crawler belt 20 is integrally formed and protruded in advance on the non-ground surface side of the metal core 22 of the rubber crawler belt 20.

According to the third aspect of the present invention, when the upper swing type crawler dump travels, the scraping member protruding from the non-ground surface side of the rubber crawler scrapes the soil and snow accumulated on the track frame. Since it is taken out and discharged outside, the upper rubber crawler belt between the guide wheel and the starting wheel does not rise upward. As a result, even if the gap between the revolving frame and the rubber crawler belt of the upper revolving unit is reduced, interference between the revolving frame and the rubber crawler belt is eliminated, so that safety is improved and the height during transportation can be reduced. Transportability can also be improved.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a crawler dump rubber crawler dump according to an embodiment of the present invention.

FIG. 1 is a front sectional view of a rubber track according to the present invention, and FIG. 2 is a plan view. The rubber crawler belt 20 includes a plurality of annular wire ropes 21, and a plurality of metal cores 22 disposed thereon at equal intervals at a pitch for meshing engagement with the above-described starting wheel 13 in an annular direction in parallel. And a rubber 23 integrally formed by coating. At the center of the cored bar 22, there are provided projections 24 for guiding the guide wheel 12, the starting wheel 13, the upper rolling wheel 15 and the lower rolling wheel 14 shown in FIG. It is provided on the ground surface side so as to protrude from the rubber 23. Rolling surfaces 25 of each wheel are formed on the rubbers 23 on both sides of the projection 24. A scraping member 26 is provided to protrude from the metal core 22 on the inner side of the non-ground surface of the rubber crawler belt 20 and on the outer end portion from the rolling surface 25. The core bar 22 and the scraping member 26 are integrally formed by welding or casting, and have sufficient strength.

As shown in the plan view of FIG. 2, the scraping member 26 is composed of two plates 26a, 26a, and the outer ends of both plates are rubber crawler belts in the traveling direction of the upper revolving crawler dump. Both plates are inclined by an angle α with respect to the crawler belt left-right direction so as to be located rearward from the inside in the width direction of the track 20. Therefore, when the upper revolving crawler dump travels, the plate 26a in front of the traveling direction scrapes off the dirt and snow accumulated on the truck frame 11, and the scraped off dirt and snow is inclined by the plate 26a. Flows along the arrow A, and is discharged out of the rubber crawler belt 20. Both plates 26a, 26
a is inclined by the angle α, the scraped earth and snow flows along the inclination of the scraping member 26 and smoothly discharged to the outside of the rubber crawler belt 20 both when moving forward and when moving backward. It has become so.

In the above description, the scraping member 26
Is formed integrally with the metal core 22 by welding or casting, but is not limited thereto. For example, a fixing member to which the scraping member 26 can be attached by bolts or the like may be used.
May be integrally formed. Thereby, the scraping member 26 can be mounted on the rubber crawler belt 20 when necessary. Further, although the example in which the scraping member 26 is provided inside the vehicle body on the non-ground surface of the rubber crawler belt 20 is shown, for example, it may be provided on both sides of the protrusion 24 on the non-ground surface of the rubber crawler belt 20. Thus, it is not necessary to manufacture the rubber crawler belt 20 having a right and left difference, and common parts can be achieved.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a rubber crawler belt according to the present invention.

FIG. 2 is a plan view of a rubber crawler belt according to the present invention.

FIG. 3 is a side view of the upper swing type crawler dump.

[Explanation of symbols]

 Reference Signs List 20 rubber track 22 core metal 26 scraping member

Claims (3)

[Claims] A starting wheel (13) in which a metal core (22) is arranged in parallel in an annular direction.
A rubber crawler belt laid and buried at a pitch that meshes with and engages with the rubber crawler belt (20), wherein a scraping member (26) for discharging earth and sand and snow is protrudingly provided on a non-ground surface side of the rubber crawler belt (20). . 2. A starting wheel (13) in which a metal core (22) is arranged in parallel in an annular direction.
A rubber crawler belt laid and embedded at a pitch that meshes with and engages with the core metal (22), wherein a scraping member (26) for discharging earth and sand or snow is integrally formed in advance and protruded. Crawler. 3. A lower traveling body (10) having rubber crawler belts (20) on the lower left and right sides of the vehicle; and a right and left rubber crawler belt ( An upper revolving structure having a revolving range in which at least a part of the lower traveling structure (20) is included, and an induction wheel (12) and a starting wheel (13) disposed before and after a track frame (11) of the lower traveling structure (10). ), The upper rubber track (20) of the upper revolving crawler dump that rotates while being separated from the upper revolving structure by a predetermined distance between the track frame (11) and the upper rubber track (20). (26) that removes sediment and snow accumulated on the soil
Characterized in that the crawler dump is formed integrally with and protruded from the non-ground surface side of the metal core (22) of the rubber crawler (20) in advance.