JP2002308160A - Mud scraping device for crawler vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mud scraping device for crawler vehicle capable of efficiently scraping the sediment adhered to a crawler. SOLUTION: In a crawler vehicle traveling by rotating an endless crawler 1 wound between an idler 7 an a sprocket 8 by a traveling motor 9 through the sprocket 8, a mud scraping means 14 formed in a mountain shape is set on a track frame 6 in the vicinity of the idler 7 and the sprocket 8 so that a ridge line part 14e is substantially orthogonal to the vehicle advancing direction. The sediment stuck to the crawler 1 is efficiently scraped off by the ridge line part 14e of the mud scraping means 14 when the crawler 1 is turned around the idler 7 and the sprocket 8, and never fallen or deposited on the track frame 6. Accordingly, the sediment removing work after the end of a work can be efficiently performed in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mud dropping device for a tracked vehicle running on a crawler belt.

[0002]

2. Description of the Related Art Conventionally, a tracked vehicle used for construction equipment such as a hydraulic shovel has a traveling body that can travel on a track. The traveling body has a configuration in which an endless crawler belt is wound between an idler and a sprocket provided before and after the track frame, and can be driven by the crawler belt by rotating the crawler belt via a sprocket by a traveling motor. It has become.

A tracked vehicle is suitable for working on a soft ground because of the low contact pressure of the crawler belt. However, when working on a soft ground, the soil attached to the crawler belt is deposited on the track frame as the crawler belt rotates. When the track falls and accumulates, the accumulated sediment prevents smooth rotation of the track, and causes the track to wear out early. For this reason, conventionally, when the work is completed or when transporting the tracked vehicle to another site, the work to remove the earth and sand attached to the crawler track and the earth and sand deposited on the track frame has been performed, but it has been accumulated on the track frame. Since the earth and sand is often dried and solidified, there is a problem that a lot of time and labor are required for the operation of removing the earth and sand.

In order to solve such a problem, for example, Japanese Unexamined Utility Model Publication No. Hei 7-35271 discloses a method for preventing mud from accumulating on a track frame by scraping off the sediment adhering to the crawler belt using a mud dropping plate. A device has been proposed. The mud accumulation preventing device disclosed in the above-mentioned publication has a mud-dropping plate vertically erected on the front and rear upper portions of a truck frame, and the mud-dropping plate scrapes off the soil and dirt attached to the crawler belt. Is provided so that the earth and sand scraped off by the mud-off board is discharged to the outside of the truck frame by the mud-washing board.

[0005]

However, in the mud accumulation preventing device disclosed in the above publication, the tip of the mud-dropping plate for scraping off the soil attached to the crawler belt is installed so as to be close to the link or the crawler plate constituting the crawler belt. Therefore, when the crawler belt swings while the traveling body is running, the link or crawler plate comes into contact with the tip of the mudwasher plate, generating abnormal noise and causing noise, or the mudplate is worn out early. Problems.

Further, if the track is loosened during running, there is a concern that the link or the track may be caught on the mud dropping plate and the running may not be performed, or the track or the mud plate may be damaged. A load is applied to the provided mud plate from the right angle when scraping mud, so a mud plate with a strong structure is required to withstand excessive load, and the mud drop device is large and expensive. There are also problems such as becoming.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and provides a mud dropping device for a tracked vehicle capable of efficiently scraping off the earth and sand adhering to a crawler belt with a simple structure at a low cost. It is intended to do so.

[0008]

According to a first aspect of the present invention, there is provided a mud dropping device for a tracked vehicle, wherein an endless crawler belt is wound between idlers and sprockets provided in front of and behind a track frame. A tracked vehicle that is mounted on a track frame near an idler and a sprocket,
A substantially mountain-shaped mud dropping means is installed such that its ridge line is substantially perpendicular to the vehicle traveling direction.

With the above construction, when the crawler track bypasses the idler or the sprocket, the earth and sand attached to the crawler belt are scraped off by the ridge line of the mud dropping means installed near the idler or the sprocket, and fall on the track frame. , Because it is not deposited on the track frame
After the work is completed or when transporting the tracked vehicle to another site, the work to remove the soil attached to the track and the track frame can be performed efficiently in a short time, and the soil attached to the track link and the track plate Since the load is received on the slope of the slanting means formed in the shape of a mountain, sufficient strength can be obtained even with an excessive load, and as a result, the sludge plate is provided almost vertically on the track frame. Compared to the device, the small and light mud dropping means can efficiently remove the earth and sand attached to the crawler belt, so that the mud removing device can be obtained at low cost.

According to a second aspect of the present invention, in order to attain the above object, the mud dropping device for a tracked vehicle is configured such that a ridge portion of the mud dropping means is inclined so as to be gradually lowered to the outside of the track frame.

[0011] With the above structure, the earth and sand scraped off at the ridge of the mud dropping means is discharged to the outside of the truck frame by the inclined surface forming the ridge, so that the earth and sand can be discharged more efficiently.

According to a third aspect of the present invention, in order to achieve the above object, an appropriate gap is provided between a track link and a crawler plate constituting a crawler belt and a mud-off means.

According to the above configuration, even if the crawler belt swings during traveling of the tracked vehicle, the track link or the crawler does not come into contact with the ridge line of the mud dropping means, thereby causing noise, Conventional problems such as the early wear of the mud-dropping means can be solved, and even if the crawler belt is loosened while the tracked vehicle is running, the link and the track are not caught by the mud-dropping means. There is no worry that running becomes impossible or the track and mud dropping means are damaged.

According to a fourth aspect of the present invention, there is provided a mud removing apparatus for a tracked vehicle according to the fourth aspect, wherein the mud removing means comprises a front and rear mud-off member formed of a plate, and a lower portion of the front and rear mud-off members. Is detachably attached to a pedestal fixed on a track frame.

According to the above construction, the mud dropping means can be easily constituted, and even if the front and rear mud-dropping members are worn out or damaged during long-term use, they can be easily replaced with new mud-dropping members. It is very economical because it can be done.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings shown in FIGS. FIG. 1 is a side view of a tracked vehicle (hydraulic shovel) employing the mud dropping device of the present invention, FIG. 2 is an enlarged side view of a traveling body, FIG. 3 is an arrow view from a direction A in FIG. FIG. 5 is a sectional view taken along line BB of FIG. 2;
6 is a sectional view taken along the line CC of FIG. 2, FIG. 6 is an enlarged side view of the mud plate, and FIG. 7 is a plan view of the same.

The hydraulic excavator shown in FIG. 1 comprises a traveling body 2 that can travel on a crawler belt 1 and a revolving body 3 that is provided on the traveling body 2 so as to be pivotable.
A work machine 5 having a bucket 4 is mounted. The traveling body 2 is provided with an idler 7 at a front portion of a track frame 6 and a sprocket 8 at a rear portion so as to be rotatable.
An endless crawler belt 1 is wound between the idler 7 and the sprocket 8, and the crawler belt 1 is driven by rotating the sprocket 8 by a traveling motor 9 to drive the crawler belt 1.

A plurality of lower rolling wheels 10 are rotatably supported on the lower surface of the track frame 6 at intervals in the front-rear direction, and the upper surface of the track frame 6 has front and rear bearings. An upper wheel 12 is rotatably supported via a bracket 11. On the other hand, on the front upper surface and the rear upper surface of the track frame 6, mud dropping means 14 are provided. These mud removing means 14 are for scraping off the earth and sand attached to the inner surface of the crawler belt 1 and preventing the earth and sand from being deposited on the track frame 6. And a rear mud-off member 1 installed in front of a sprocket 8 provided at the rear end of the truck frame 6.
4b.

The front mud-off member 14a is provided with a plurality of track links 1a constituting the crawler belt 1 and the soil adhering to the inner surface of the track plate 1b attached to the track links 1a as shown in FIG. 3 and FIG. As shown in FIG. 4, the track link 1a is formed of a steel plate having a width slightly smaller than a distance L from an outer surface of the track link 1a to an end of the footwear plate 1b. As shown in FIGS. 6 and 7, the steel plate is bent into a chevron having a slightly smaller angle than a right angle.
4c is bent and the mounting portion 14c is formed.
Are provided with a plurality of mounting holes 14d.

On the track frame 6 on which the front mud remover 14a is mounted, pedestals 15 are fixed to both sides of the idler 7 by means such as welding. The pedestal 15 is formed of a thick plate having substantially the same size as the mounting portion 14c.
4d, the fixing tool 16 such as a bolt is screwed into the screw hole 15a of the pedestal 15 and tightened.
A front mud dropping member 14a is mounted on the track frame 6 such that 4e is perpendicular to the running direction of the running body 2.
Front mud remover 1 mounted on truck frame 6
Reference numeral 4a denotes a track link 1a and a crawler plate 1 constituting the crawler track 1 even when the crawler track 1 swings or loosens during running.
The track link 1a, the crawler plate 1b and the mud-off member 1 are so arranged that the b does not contact the ridge 14e or the end of the mud-off plate 14a.
An appropriate gap, for example, a gap of 10 mm or more is set in advance between 4a.

On the other hand, the rear mud-off member 14b has substantially the same shape as that of the front mud-off member 14a, and is shown in FIGS. 3 and 5 so that the soil attached to the inner surfaces of the track link 1a and the crawler 1b can be scraped off efficiently. Thus, the rear mud dropping member 14b provided outside the sprocket 8 is formed of a steel plate having a width slightly smaller than the distance L from the outer surface of the track link 1a to the end of the track plate 1b.
The rear mud-off member 14b provided on the rear end of the truck frame 6 and provided inside the sprocket 8 is mounted on a motor bracket 6a fixed to the rear end of the track frame 6.

Next, the operation of the above-structured mud dropper will be described. The tracked vehicle is suitable for working on a soft ground because the contact pressure of the crawler belt 1 is low, but when working on a soft ground, The earth and sand adhere to the track link 1a and the crawler plate 1b of the crawler belt 1 and reach above the track frame 6 as the crawler belt 1 rotates. For example, when the traveling body 2 is moving forward, the earth and sand adhering to the track link 1a and the crawler plate 1b are removed from the track frame 6 when the crawler belt 1 bypasses the sprocket 8.
, The rear mud members 14b are installed on both sides of the sprocket 8, and the soil adhering to the inner surfaces of the track link 1a and the footboard 1b is removed by the rear mud members 14b.
Of the track link 1a and the footwear plate 1b does not fall onto the track frame 6 or accumulate on the track frame 6.

When the traveling body 2 is moving backward, when the crawler belt 1 detours around the idler 7, the ridge 14e of the front mud-off member 14a installed on both sides of the idler 7 is connected to the track link 1a or the shoe plate. Since the soil attached to the inner surface of the track 1b is scraped off, the soil attached to the track link 1a and the footwear plate 1b does not fall onto the track frame 6 or accumulate on the track frame 6, and the front and rear mud-off members 14a and 14b are formed in a substantially mountain shape, and a pedestal 15 with both lower ends installed on the track frame 6.
, The load of the earth and sand attached to the track link 1a and the footwear plate 1b is received by the inclined surfaces of the front and rear mud members 14a and 14b formed in a triangular shape. Since sufficient strength can be obtained, even though a mud-dropping plate is erected substantially vertically on the track frame 6, compared to the conventional one, the mud-dropping means 14, which is small and light, removes the soil attached to the crawler belt 1 more efficiently. It can be removed well.

Since a wedge-shaped space is formed between the front and rear ends of the track frame 6 and the front and rear mud-off members 14a and 14b, the earth and sand pushed up between the crawler belt 1 and the track frame 6 is removed. Can be discharged to the outside of the truck frame 6 due to the space of the crawler belt 1.
Track link 1a, footboard 1b and front and rear mud spill member 1
Since an appropriate gap of, for example, 10 mm or more is provided in advance between 4a and 14b, the crawler 1
Even when swings, the track link 1a and the footboard 1b do not come into contact with the ridges 14e of the front and rear mud-off members 14a and 14b, thereby causing noise and causing the front and rear mud-off members 14a and 14b to move. Problems such as early wear can be eliminated.

In the above-described embodiment, the mounting portions 14c are formed by bending both ends of the front and rear mud-off members 14a and 14b. However, as shown in FIGS.
The front and rear mud dropping members 14 are attached to the opposing surface of the base 15 fixed thereon.
a, forming an inclined surface 15b corresponding to the inclination of 14b,
The lower parts of the front and rear mud dropping members 14a and 14b may be detachably fitted between the front and rear pedestals 15, in which case a stopper 15c is fixed to the inner end face of each pedestal 15 and a stopper plate 15d is fixed to the outer end face. By being detachably mounted by the tool 15e, the front and rear muddy members 14a, 14b can be prevented from shifting laterally due to the load due to the earth and sand, and only by removing the stopper plate 15d, can the front and rear muddy members 14a, 14b be removed. Since the work of removing and attaching the 14b can be performed, the replacement work when the front and rear mud-off members 14a and 14b are worn or damaged becomes easy.

As shown in FIGS. 10 to 14, the front and rear muddy members 14a and 14b are inclined in advance so that the ridges 14e of the front and rear muddy members 14a and 14b are inclined downward to the outside of the track frame 6. Ridgeline part 1
Since the earth and sand scraped off in 4e is discharged to the outside by the front and rear inclined surfaces forming the ridge 14e, the earth and sand can be discharged more efficiently.

[0027]

According to the present invention, as described in detail above, a substantially mountain-shaped mud dropping means is installed on a track frame near an idler and a sprocket so that a ridge line is substantially perpendicular to a vehicle traveling direction. Therefore, when the crawler track circumvents the idler or sprocket, it is scraped off by the ridgeline of the mud dropping means installed near the idler or sprocket and falls on the track frame, or falls on the track frame. Because there is no accumulation, when transporting tracked vehicles to other sites after work is completed,
The work to remove the soil attached to the track and the track frame can be performed efficiently in a short time, and the load caused by the soil attached to the track link and the track plate is received by the slope of the mud-dropping means formed in a mountain shape. As a result, sufficient strength can be obtained even under an excessive load, and as a result, crawler tracks are smaller and lighter than conventional ones in which mud plates are erected almost vertically on a track frame. Since the earth and sand attached to the soil can be efficiently removed, a mud removing device can be obtained at low cost.

Also, since the ridge line of the mud dropping means is inclined so as to be gradually lower to the outside of the track frame, the earth and sand scraped off by the ridge line of the mud dropping means is removed by the inclined surface forming the ridge line. Since it is discharged to the outside of the frame, the earth and sand can be discharged more efficiently, and an appropriate gap is provided between the track link and the crawler plate constituting the crawler belt and the mud dropping means. Even if the track crawls during traveling, track links and footboards do not come into contact with the ridgeline of the mud dropping means, causing noise or causing the mud dropping means to wear out early. In addition to solving the problem of above, even if the track crawls or the track is loosened while the tracked vehicle is running, the link and the track will not be caught by the mud dropping means, making it impossible to run. Or track, Drop means there is no worry of such damage.

Further, the mud dropping means is constituted by a front and rear mud dropping member formed of a plate body, and the lower part of the front and rear mud dropping members is detachably attached to a pedestal fixed on a track frame. It is very economical because the means can be simply configured and even if the front and rear mud-off members are worn or damaged during long-term use, they can be easily replaced with new ones.

[Brief description of the drawings]

FIG. 1 is a side view of a tracked vehicle equipped with a mud remover according to an embodiment of the present invention.

FIG. 2 is a side view showing a traveling body of a tracked vehicle equipped with a mud remover according to an embodiment of the present invention.

FIG. 3 is an arrow view from a direction A in FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is a side view of a mud dropping means constituting the mud dropping device for a tracked vehicle according to an embodiment of the present invention.

FIG. 7 is a plan view of a mud dropping means included in a mud dropping device for a tracked vehicle according to an embodiment of the present invention.

FIG. 8 is a side view showing a modification of the mud removing means constituting the mud removing device for a tracked vehicle according to an embodiment of the present invention.

FIG. 9 is a plan view showing a modification of the mud removing means constituting the mud removing device for a tracked vehicle according to an embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a modified example of a front mud remover constituting a mud remover for a tracked vehicle according to an embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a modified example of a rear mud removing member constituting the mud removing device for a tracked vehicle according to an embodiment of the present invention.

FIG. 12 is a side view showing a modified example of the front and rear mud-dropping members constituting the mud-dropping device for a tracked vehicle according to an embodiment of the present invention.

FIG. 13 is a cross-sectional plan view showing a modified example of the front and rear mud-dropping members constituting the mud-driving device of the tracked vehicle according to the embodiment of the present invention.

FIG. 14 is a front view showing a modified example of the front and rear mud members constituting the mud removing apparatus for a tracked vehicle according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Track 1a Track link 1b Foot plate 6 Track frame 7 Idler 8 Sprocket 9 Traveling motor 14 Mud dropping means 14a Front mud dropping member 14b Rear mud dropping member 14e Ridge part 1 Base

Claims (4)

[Claims] 1. A tracked vehicle in which an endless crawler belt is wound between an idler and a sprocket provided before and after a track frame, wherein the track frame near the idler and the sprocket has a substantially chevron shape. Characterized in that the mud removing means formed in the above is installed such that the ridge portion thereof is substantially perpendicular to the vehicle traveling direction. 2. The mud dropping device of a tracked vehicle according to claim 1, wherein a ridge portion of the mud dropping means is inclined so as to be gradually lowered outside the track frame. 3. The mud dropping device for a tracked vehicle according to claim 1, wherein an appropriate gap is provided between the track link and the track plate constituting the crawler belt and the mud dropping means. 4. The mud dropping means is constituted by a front and rear mud dropping member formed of a plate body, and a lower portion of the front and rear mud dropping member is detachably attached to a pedestal fixed on the track frame. Any one of claims 1 to 3
Item 13. The mud dropping device for a tracked vehicle according to Item.