JPS6127348Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a structure in which the show plate is divided into a link plate mounting part and a grounding part, and a plurality of types of the grounding parts can be selectively attached to the link plate mounting part. Regarding crawlers.

The crawler traveling device uses a rubber shoe, flat shoe, single grouser, etc. for its ground contact part.
Although it is designed to be able to be used interchangeably depending on workability and road surface conditions, conventionally, the grounding part 20 is generally attached to the link plate mounting part 19 by tightening bolts 21, as shown in FIG. Because of this, it takes a lot of time to install a huge number of grounding parts, resulting in a lack of workability, and there are also problems such as the bolts 21 becoming rusted and difficult to remove.

In addition, in Japanese Utility Model Publication No. 32-1814, a show plate made of an elastic material with a nearly triangular cross section is fitted from the side into a show plate frame made of a steel plate, and show plate fixing plates at both ends are used to prevent slippage. Disclosed is a configuration in which the screw plate is fixed to the shoe plate frame with bolts. Each time the show plate is replaced, it is necessary to remove and install the show plate fixing plates and bolts on both sides one by one, and the work that takes time is required. Since it is located at the end, there are many opportunities for it to come into contact with stones and the like as it travels, and this part has the disadvantage of being easily damaged.

The technical problem to be solved by this invention is to make it possible to replace the grounding part easily and quickly with simple improvements, and to strengthen the connection strength between the link plate part and the grounding part. It is in.

The technical means taken to solve the above technical problem is to support the grounding part in a state where it can be attached and detached only by sliding in the width direction with respect to the link plate attachment part, and to A fixing pin hole is provided extending through each of the fixing pin holes and the grounding portion, and a pin-like body for fixing the grounding portion is elastically fitted into both of the fixing pin holes.

The above technical means works as follows. Since the grounding part is supported in a state where it can be attached and removed only by sliding it in the width direction with respect to the link plate mounting part, both can be connected by simply sliding the grounding part in the width direction with respect to the link plate mounting part. It can be supported and removed, and the pin-shaped body for fixing the grounding part is elastically fitted into both fixing pin holes provided through the link plate attachment part and the grounding part. It is easy to insert and fit this fixing pin-shaped body into both fixing pin holes, and to remove it by tapping the opposite side of the through-hole.

Therefore, the present invention has the following effects.

Both can be supported and removed by simply sliding the grounding part in the width direction relative to the link plate mounting part.Furthermore, the fixing pin-shaped body can be inserted and fitted into both fixing pin holes using the through holes. Since it is easy to remove by tapping from the opposite side, the replacement work of the grounding part can be done easily and quickly. moreover,
The position of the grounding part is regulated in the longitudinal direction of the crawler relative to the link plate attachment part, and the fixing pin-shaped body only has to bear the force to prevent it from coming off, and the connection of these two parts provides strength against the propulsive force caused by rotation of the crawler. We have now been able to provide a robust crawler. Moreover, the above effects were achieved through extremely simple modifications. Next, embodiments of the present invention will be described in detail based on the drawings.

A drive wheel 2 is installed at the longitudinal end of the crawler frame 1.
At the same time, a driven wheel 4 is attached to the other end of the frame with a longitudinal position change mark, and rolling wheels 5 are provided above and below the frame 1, and crawlers 6 are attached to these wheels. The traveling device 7 is constructed by winding the .

The crawler 6 has a shoe plate 10 consisting of a grounding part 8 and a link plate mounting part 9, which are pivotally connected by connecting pins 11. is structured as follows.

That is, as shown in FIGS. 2 and 3, a pair of left and right link plates 12, 12 are provided upright at the center of the link plate mounting portion 9, and fixing pin holes 9a, 9a are inserted through both sides of the link plates 12, 12. The fitting portion 13 is formed by bending both ends of the crawler 6 in the rotating direction so as to face downward and inward, and on the other hand, an elastic body 14 and a protrusion 15 are provided on the lower surface side. A mud removal hole 8b is provided approximately in the center of each of the various grounding portions 8..., and the link plate portion 9
The fixing pin holes 8a, 8a are provided at the same pitch as both fixing pin holes 9a, 9a, and the grounding portion 8 is selectively slid in the width direction relative to the link plate mounting portion 9. The fixing pin-shaped body 16 made of an elastic body is fitted into the holes 8a, 9a penetrating through both parts 8, 9, and both parts 8, 9 is configured to be held fixed.

In the figure, reference numeral 17 denotes an operating opening for knocking out the fixing pin-shaped body 16.

As shown in FIG. 4, a stopper 18 is provided at one end in the longitudinal direction of the link plate attachment part, the grounding part 8 is mounted on the fitting part 13, and the end surface of the grounding part 8 is brought into contact with the stopper 18.
The holes 8a and 9a penetrating through both parts 8 and 9 may be configured to be easily aligned, and as shown in FIG.
3 may be provided and configured to be fitted onto the link plate attachment portion 9.

In addition, there is a method for elastically fitting the fixing pin-like body to prevent the link plate mounting part and the grounding part from moving in the width direction, such as configuring the fixing pin-like body by covering an iron pin with an elastic body. can be modified in various ways separately.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the crawler according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is an exploded perspective view of the main parts, Fig. 3 is a sectional view of the main parts, and Figs. 4 and 5 are a cross-sectional view of the main parts. FIG. 6 is a cross-sectional view of a main part showing a modification, and FIG. 6 is a cross-sectional view of a main part showing a conventional structure. 6...Crawler, 8...Grounding part, 8a...Fixing pin hole, 9...Link plate mounting part, 9
a...Fixing pin hole, 10...Show plate,
16...Fixing pin-shaped body.

Claims (1)

[Scope of utility model registration request] In the crawler 6, the show plate 10 is divided into a link plate mounting portion 9 and a grounding portion 8, and a plurality of types of the grounding portions 8 can be selectively attached to the link plate mounting portion 9. The grounding portion 8 is supported in a state that it can be attached to and removed from the plate mounting portion 9 only by sliding it in the width direction, and fixing pin holes are provided across the link plate mounting portion 9 and the grounding portion 8, respectively. 9a, 8a, and a pin-shaped body 16 for fixing the ground portion is elastically fitted into both fixing pin holes 9a, 8a.