JPS6313110Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a traveling device that supports the upper half of a crawler track in a tracked vehicle without generating noise.

(Prior Art) Tracked vehicles generally include carrier rollers that support the upper half of the track. This carrier roller comes into contact with the crawler track while the vehicle is running and generates extremely loud noise.

(Problem to be solved by the invention) Some tracked vehicles are equipped with various types of track contact surfaces with low friction, or have a track support device that uses carrier rollers, but in the latter case, the generates noise.

(Means for Solving the Problems) The object of the present invention is to reduce the noise generated while the vehicle is running by installing a truck carrier assembly that does not have a carrier roller, which is a source of noise. To this end, the present invention includes a pair of support brackets that are connected to a frame and spaced apart from each other, a support that connects the upper parts of the pair of support brackets, and a pair of parallel protrusions in the center that are firmly attached to the supports. a track carrier bearing made of ultra-high molecular density plastic that is in contact with the inner surface of the upper half of the crawler track; and an elastic member interposed between the track carrier bearing and the support and separating the track carrier bearing and the support. and fastening means for fastening the support, the truck carrier bearing, and the elastic pad, the fastening means passing through the support, the truck carrier bearing, and the elastic pad. An attempt is made to solve the above-mentioned problems with a traveling device for a tracked vehicle that includes a track carrier assembly consisting of a sleeve, a pair of washers that abut on both ends of the sleeve, and bolts and nuts that fasten the sleeve and the pair of washers. It is something to do.

(Function) According to the traveling device having the above configuration, the noise generated from the crawler track during running is reduced, and the horizontal movement of the crawler track during running is suppressed, and when the bolt of the fastening means is fastened, the track carrier bearing and the elastic pad are Bolts and nuts do not loosen or break even when compressed.

(Example) The embodiments shown in the accompanying drawings will be described below.

FIG. 1 shows a tracked vehicle 10, in which a traveling device 12 is shown.
supports and drives the crawler belt 14. The traveling device 12 is the first
an idler 20 having an end 16 and a second end 18;
is rotatably mounted at the first end 16 of the running gear, and a sprocket 22 is mounted at the second end 18 of the running gear to drive the track. Crawler track 14
The crawler track 14 suspends the idler 20 and sprocket 22 and its lower half 24 engages with the ground.The crawler track 14 suspends the idler 20 and sprocket 22 and its lower half 2
4 engages with the ground. The upper half 26 of the track 14 is located above the lower half 24 between the idler 20 and the sprocket 22.

The truck carrier assembly 28 is the traveling device 1
2, a pair of support brackets 30 spaced apart from each other, a support 34 connecting the upper parts of these support brackets, and a crawler track having a pair of parallel protrusions 48 in the center and firmly attached to the support 34. A track carrier bearing 40 made of ultra-high molecular density plastic in contact with the inner surface of the upper half 26, an elastic pad 50 interposed between and separating the track carrier bearing and the support, and a support and track carrier bearing. , and fastening means for fastening the elastic pad.

The pair of support brackets 30 are attached to the frame 29 such that each support bracket 30 is located slightly below the crawler track upper half 26.
join to. The support 34 that connects the upper part of the support bracket 30 has a C-shaped channel structure as a whole, and the mounting shaft 32 is firmly fixed by fillet welding at the position 38 of the hole 36 at both ends.
Attach to.

The truck carrier bearing 40 is attached by a fastening means to be described later. The track carrier bearing 40 is longitudinally elongated and approximately the same length as the support 34 and acts as a low friction guide and support member for the upper half 26 of the track. On the upper part of the track carrier bearing 40, a pair of parallel protrusions 48 in the center and a bearing surface 44 are formed on both sides of the protrusions 48, and the protrusions 48 suppress horizontal movement of the track during running.
Also, as shown in FIG. 2, the track carrier bearing 40 has both ends inclined downwardly so that when the crawler belt 14 moves back and forth, it smoothly engages and passes easily. Truck carrier bearing 40 is preferably formed from ultra-high polymer plastic, but may be made of other suitable materials.

Truck carrier bearing 40 and support 3
4, an elastic pad 50 is inserted as a sound absorbing and cushioning material to separate them. In this embodiment, the pad 50 is made of a rubber sheet with a thickness of about 1 mm, but it may be thin or thick.

The track carrier bearing 40, elastic pad 50, and support 34 are fastened together by fastening means. The fastening means consists of a sleeve 52 that passes through the track carrier bearing, support, and elastic pad, and a pair of washers, bolts, and nuts 42 that abut both ends of the sleeve 52. As a result, even if the track carrier bearing 40 and the elastic pad 50 are compressed when fastened with bolts and nuts, the bolts and nuts will not loosen and there is no risk of breakage.

(Effects of the Invention) The truck carrier assembly 28 according to the present invention configured as described above sufficiently supports the upper half of the crawler track and does not have a normal carrier roller, so that the noise generated while the vehicle is running is significantly reduced. Moreover, the present invention has the advantage that there is no risk of loosening or breaking bolts and nuts.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of a tracked vehicle to which the present invention is applied, Fig. 2 is a detailed side view of the track carrier assembly of Fig. 1, and Fig. 3 is a detailed side view of the track carrier assembly of Fig. 2.
It is a cross-sectional view along the line, and in the figure, 10 is a tracked vehicle;
12 is a traveling device, 14 is a crawler track, 20 is an idler,
22 is a sprocket, 24 is a crawler lower half, 26 is a crawler upper half, 46 is a crawler link, and 48 is a pair of protrusions.

Claims (1)

[Claims for Utility Model Registration] A running device for a tracked vehicle comprising a frame, an idler and a sprocket supported by the frame, and a crawler track that wraps around the idler and sprocket and has an upper half and a lower half. A pair of support brackets connected to the frame and spaced apart from each other; a support that connects upper portions of the pair of support brackets; and a support that has a pair of parallel protrusions in the center and is firmly attached to the support and supports the crawler track. a track carrier bearing made of ultra-high molecular density plastic in contact with the inner surface of the upper half; and an elastic pad interposed between the track carrier bearing and the support and separating the track carrier bearing and the support. and a fastening means for fastening the support, the track carrier bearing, and the resilient pad, and the fastening means includes a sleeve passing through the support, the truck carrier bearing, and the resilient pad; The track carrier assembly consists of a pair of washers that abut against both ends of the sleeve, and bolts and nuts that fasten the sleeve and the pair of washers. The traveling device is characterized in that the fastening means prevents the bolts and nuts from loosening even if the truck carrier bearing and the elastic pad are compressed when the bolts are fastened.