KR20090004441U - Rubber Pad for Steel Crawlers - Google Patents

Abstract

The present invention relates to a rubber pad fastened to a shoe plate of a steel crawler, spaced apart from each other are arranged side by side, each of the two ends of the two pipes (100) provided with female threads (110); A coupling plate 200 which integrally connects the two pipes 100; A rubber coating layer 300 covering the entirety of the remaining portions except for both end surfaces of the pipe 100 connected integrally by the coupling plate 200; Each of which is coupled to both ends of the rubber coating layer 300 is composed of a vertical piece 410 and a horizontal piece 420, the vertical piece 410, the female screw provided on one side of each of the pipe 100 ( Two engaging holes 411 corresponding to the 110 are provided, and both ends of the shoe plate 7 of the steel crawler are in close contact with each other in the space between the horizontal piece 420 and the lower surface of the rubber coating layer 300. An angle bracket 400 accommodated; And a coupling bolt 500 that passes through the coupling hole 411 of the angle bracket 400 and is fastened to the female screw 110 of the pipe 100. It is characterized in that the protrusion 120 is formed to form a portion.

Rubber coating layer, pipe, joining plate, angle bracket, joining bolt, elastic hook

Description

Rubber Pad for Steel Crawlers {Rubber Pad for Steel Crawlers}

The present invention relates to a structure of a rubber pad mounted on the shoe plate of the steel crawler to prevent damage to the road during the movement of the crawler, the thread is provided at both ends of the pipe embedded in the rubber coating layer, the coupling bolt is attached to the end of the pipe It is characterized in that the angle bracket is coupled to both sides or one end of the rubber coating layer by fastening to the provided thread.

In order to prevent the floor from being damaged when steel crawler-type construction machinery is working in the downtown, most of the developed countries attach rubber pads. Construction machinery manufacturers in developed countries attach rubber pads with fastening bolts perpendicular to the ground. Although it is shipped from the factory with the fastening holes in the crawler's shoe plate, domestically, there is no such fastening hole in the shoe plate. There is a problem that can not be attached.

In the case of large steel crawler type construction machines, the thickness of the shoe plate is so difficult to drill. In this case, the horizontal fastening type rubber is possible to fasten and disassemble the rubber pad on both sides of the shoe plate in the horizontal direction without additional drilling. The pad is very convenient.

Rubber pads should be fixed with bolts at both ends, such as vertical fastening or horizontal fastening, and two bolts are required on one side, so four bolts are required on one rubber pad. Therefore, considering that it takes about 100 rubber pads per equipment, more than 400 bolts should be tightened. Especially, there is not enough space for bolt tightening in the center (inner side) of the equipment. It takes a lot of time and is difficult to work with a single person, all the manufacturers and technicians continue to devise and invent how to easily attach a rubber pad.

The main direction of this study is to provide a hook or angle bracket that omits bolting on one side of the rubber pad, based on the fact that the bolts on one side of the rubber pad are significantly reduced, rather than bolting on both ends of the rubber pad. Development of the product.

However, fixing a member such as a hook or an angle bracket to one side of the rubber pad is difficult in the manufacturing process, takes a lot of manufacturing cost, and requires expensive mold manufacturing.

In addition, in the case of a side fastening type rubber pad in which a hook or angle bracket fixed by welding is provided on one side of the rubber pad, a vertical gap between the hook or angle bracket fixed by welding or the like and the bottom of the rubber pad is used to Inevitably, it is inevitably larger than the thickness of the shoe plate to accommodate it.

In order to solve this problem, using the elastic hook (wire hook), the vertical gap between the bottom of the elastic hook and the rubber pad is made narrower than the thickness of the shoe plate registered Patent No. 605233 (wire hook type coated wire crawler for steel crawler) Rubber pads) are suitable for small models, but in the case of large models of 20 to 30 tons, it is difficult to manufacture a wire hook having a large diameter, and the manufacturing price is too high, making it difficult to put to practical use.

And maintaining the strength of the rubber pad is the frame of the steel structure inside the rubber pad. Until now, most of the steel structure inside the rubber pad is a press product having the cross-sectional shape of the shoe plate. However, the conventional method is not only expensive, but also requires a mold for manufacturing a steel plate structure, and requires expensive mold manufacturing cost, which is a significant limitation in terms of cost when developing a new product.

In other words, in the conventional rubber pad, as shown in FIGS. 4 and 5, the steel plate is laid on the lower surface of the rubber pad and the rubber is formed, and the nut is separately prepared at the opposite end of the iron plate without the integral hook or the integral angle bracket for side fastening. Although fixed by welding, there is a problem that the manufacturing cost increases. In addition, in the case of Figure 4, since the vertical gap of the fixed bracket is not larger than the shoe plate thickness can not be inserted, there is a problem that the bolt coupled by the clearance and vibration caused by this gap after mounting on the equipment well loosened. In addition, the wire hook rubber pad of Figure 5 can be made relatively easy for small equipment, but it is difficult to bend the large wire hook for large equipment more than 20 tons and there is a problem that the manufacturing cost is too much.

The purpose of the present invention created to solve the above problems is as follows.

First, it is an object of the present invention to provide a rubber pad for steel crawlers that can maintain a sufficient rigidity using a pipe without using a steel plate press structure.

Second, another object of the present invention is to provide a rubber pad that reduces manufacturing costs and is easy to manufacture.

Third, another object of the present invention is to provide a rubber pad which is easy to mount on a shoe plate and does not generate play and vibration in a mounted state.

Fourth, another object of the present invention is to provide a rubber pad that is easy to replace.

Fifth, another object of the present invention is to provide a rubber pad having an integrated wire hook.

Technical composition of the present invention created to achieve the above object is as follows.

The present invention relates to a rubber pad fastened to a shoe plate of a steel crawler, spaced apart from each other are arranged side by side, each of the two ends of the two pipes (100) provided with female threads (110); A coupling plate 200 which integrally connects the two pipes 100; A rubber coating layer 300 covering the entirety of the remaining portions except for both end surfaces of the pipe 100 connected integrally by the coupling plate 200; Each of which is coupled to both ends of the rubber coating layer 300 is composed of a vertical piece 410 and a horizontal piece 420, the vertical piece 410, the female screw provided on one side of each of the pipe 100 ( Two engaging holes 411 corresponding to the 110 are provided, and both ends of the shoe plate 7 of the steel crawler are in close contact with each other in the space between the horizontal piece 420 and the lower surface of the rubber coating layer 300. An angle bracket 400 accommodated; And a coupling bolt 500 that passes through the coupling hole 411 of the angle bracket 400 and is fastened to the female screw 110 of the pipe 100. It is characterized in that the protrusion 120 is formed to form a portion.

Technical effects according to the present invention of the above configuration is as follows.

1. It is the same as the shape of ordinary rubber pads, but it does not use the steel plate structure in rubber at all, so it does not cost the mold manufacturing cost of steel plate structure and can reduce the rubber pad manufacturing cost.

2.The rubber pad should be provided with four concave grooves on the bottom surface of the rubber coating layer so as not to interfere with the shoe bolt head that protrudes out when it is mounted on the shoe plate. And the probability of defective products is high, but the pipe structure is easy to work and minimize the defective rate because the interference does not occur just to put on the rubber coating layer forming mold when forming the rubber coating layer.

3. In order to manufacture side fastening rubber pads, conventionally, nuts must be prepared separately and welded to both ends of the steel plate structure. However, in the present invention, the manufacturing cost is reduced by tapping the tabs directly at both ends of the pipe. .

4. When the end of the pipe is machined, it becomes an integral nut, so when the angle bracket is fixed with the coupling bolt, the force applied to the angle bracket or bolt is applied to the entire pipe structure. .

5.Since the hollow of the pipe frame is empty, expensive rubber material can be saved as much as empty space.

6. When the steel structure inside the rubber coating layer is exposed outside by using the rubber pad for a long time, the general steel plate structure has a pointed steel plate protruding vertically to damage the ground, but the surface of the pipe is round so that the ground can be minimized even if the pipe is exposed to the outside. Can be.

7. With two side fastening angle brackets, wearing a rubber pad prevents the clearance between the shoe plate and the rubber cladding layer and makes it easy to install. This is because the inclined surface is provided at the bottom edge of the rubber coating layer.

8. The rubber pad has no special accessories, so the price is low.

9. In case of using angle bracket on both sides, it is easy to remove the rubber pads by removing only one side selectively.

10. If the angle bracket is combined (assembled) on one side of the rubber pad provided with the inclined surface, the angle bracket needs to be coupled only to the other side of the rubber pad, thereby greatly reducing the field work time.

11. If one side of the angle bracket is arranged to the center side of the equipment, the angle bracket can be tightened with the coupling bolt on the outside of the equipment, which minimizes the installation time and facilitates the work.

12. Even when the elastic hook is applied, only the joining plate is welded to the pipe while the elastic hook and the pipe are screwed together. Therefore, the elastic hook is not welded separately or the heat treatment of the elastic hook is unnecessary. That is, in the conventional case, when the elastic hook (wire hook) of the heat treated state is welded to the metal structure in order to maintain wear resistance and strength, an additional heat treatment process is required to prevent thermal cracking of the elastic hook. Since this process is omitted, the heat treatment and surface treatment of the elastic hook are not impaired, thereby reducing costs and improving quality.

Hereinafter, with reference to the accompanying drawings a specific embodiment of the present invention will be described in more detail.

1 is a (a) outline perspective view and (b) cross-sectional view of a specific embodiment of the present invention, Figure 2 is a perspective view showing a pipe embedded in the rubber pad of the present invention.

As shown in FIG. 2, the two pipes 100 are arranged side by side, spaced apart from each other, and female threads 110 are provided at both ends of each of the pipes 100.

In addition, the pipe 100 is bent to form the protrusions 120 in the central portion, respectively, as shown in Figure 2, by being bent in this way can increase the structural strength in a state coupled to the coupling plate 200 integrally. .

The two pipes 100 are integrally coupled by the coupling plate 200, and the coupling plate 200 is welded to the pipe 100 to connect the two pipes 100 to one.

As such, when the two pipes 100 are integrally connected as shown in FIG. 2 by the coupling plate 200, the entirety of the remaining parts except for the portion of the female screw 110 provided at both end surfaces of the pipe 100 (again) In other words, the coupling plate 200 and the two pipes 100 as a whole are covered with the rubber coating layer 300. As shown in FIG. 1, the rubber coating layer 300 is coated. As shown in FIG. 1A, an external perspective view is shown, and in the case of FIG. 1B, an angle bracket 400 and a coupling bolt are illustrated. A cross section of an entire rubber pad including 500 is shown.

The reason why the rubber coating layer 300 is not coated on the female screw 110 is because the coupling bolt 500 should be fastened to the female screw 110 as shown in FIG.

As shown in FIG. 1, the angle bracket 400 is coupled to both ends of the rubber coating layer 300 and includes a vertical piece 410 and a horizontal piece 420.

The vertical piece 410 is provided with two coupling holes 411 corresponding to the female screw 110 provided on one side of each of the two pipes 100.

The angle bracket 400 is fastened to the rubber coating layer 300 by fastening the coupling bolt 500 to the female thread 110 of the pipe 100 through the coupling hole 411, so that the angle bracket 400 is In the space between the horizontal piece 420 of the angle bracket 400 and the lower surface of the rubber coating layer 300 in the state coupled to both ends of the rubber coating layer 300, both ends of the shoe plate 7 of the steel crawler, respectively It is closely adhered to.

Looking at the cross-section shown in Figure 1 (b) it can be seen that the lower edge of one side of the rubber coating layer 300 is coupled to the angle bracket 400 is cut to form an inclined surface 310, the rubber coating layer 300 as described above By cutting the edge of the) to form an inclined surface 310, even if the distance between the angle bracket 400 and the rubber coating layer 300 is formed to be narrower than the thickness of the shoe plate (7) shoe plate (7) ) Can be easily mounted. Because the shoe plate (7) is easily inserted into the space between the angle bracket 400 and the lower surface of the rubber coating layer 300, and the other lower surface of the rubber coating layer 300 in the state that the shoe plate (7) is fully inserted This is because the angle bracket 400 can be fastened in a state of being in close contact with the plate 7. As such, the interval between the angle bracket 400 and the rubber coating layer 300 is formed to be narrower than that of the shoe plate 7, thereby preventing vibration and damage caused by play after mounting the rubber pad, and loosening the coupling bolt 500. Can prevent losing.

Figure 3 is an exploded perspective view of (a) the external perspective view, and (b) the internal structure of the embodiment in which the elastic hook is integrally provided.

The pipe 100 used in the case of FIG. 3 is provided with a female thread 110 and a protrusion 120 similarly to the pipe 100 used in FIG. 1 or FIG.

3, the elastic hook 600 is integrally provided at one end of the rubber coating layer 300.

The elastic hook 600 has a form in which the lower end is integrally coupled by the connection wire 610 in a state in which two wires bent in a 'c' shape are arranged side by side as shown in FIG. 3 (b). The upper end is provided with a thread 620 on the outer circumferential surface of each of the upper ends to be engaged with the female screw 110 of the pipe 100.

In the case of FIG. 3, unlike FIG. 1 or FIG. 2, before the two pipes 100 are integrally connected by using the coupling plate 200, the threads 620 provided in each of the upper ends of the elastic hooks 600 are provided. The two pipes 100 are integrated by welding the coupling plate 200 in a state in which two pipes 100 are coupled to the elastic hook 600 by fastening the female screw 110 provided at one end of each of the pipes 100. Will be connected to. This is because when the two pipes 100 are connected to each other in advance by using the coupling plate 200, the screw hooking of the elastic hook 600 and the pipe 100 is impossible.

The elastic hook 600 is fastened to one end of each of the pipes 100, and the pipe 100 is not fastened to the elastic hook 600 while the two pipes 100 are integrally connected by the coupling plate 200. Except for the other end surface of the entire surface of the pipe 100 is covered with a rubber coating layer 300 to form the shape as shown in Figure 3 (a). The reason why the other end surface of the pipe 100 is not covered with a rubber coating layer is that the coupling bolt 500 should be fastened to the female screw 110 provided at the other end surface of the pipe 100.

The angle bracket 400 is attached to the other end of the rubber coating layer 300 by the coupling bolt 500, as in Fig. 1 or 2, even in the case of Figure 3 the angle bracket 400 is a vertical piece 410 and It consists of a horizontal piece 420, the vertical piece 410 is provided with two engaging holes 411 corresponding to the female screw 110 provided on the other side of each pipe 100, the horizontal piece 420 and rubber An end portion of the shoe plate 7 of the steel crawler is tightly accommodated in the space between the lower surfaces of the coating layer 300.

In this case, the distance between the elastic hook 600 and the lower surface of the rubber coating layer 300 is formed to be narrower than the thickness of the shoe plate 7 of the steel crawler so that the elastic hook 600 elastically supports the shoe plate 7 of the steel crawler. The vibration caused by the play may be prevented in advance.

As such, when the gap between the elastic hook 600 and the lower surface of the rubber coating layer 300 is formed to be narrower than the thickness of the shoe plate 7 of the steel crawler, the elastic hook (not shown separately) is not shown separately in FIG. The lower edge of the rubber coating layer 300 to which the combined 600 is cut may be easily mounted on the rubber pad.

 As described above, the present invention has been described with reference to specific embodiments of the present invention, but the protection scope of the present invention is not necessarily limited to these embodiments, and various design changes within the scope of not changing the technical gist of the present invention, In the case of addition, deletion, and numerical limitation of the known technology, it is obvious that the scope of the present invention is included.

1 is a (a) outline perspective view of a specific embodiment of the present invention, and (b) cross-sectional view.

Figure 2 is a perspective view showing a pipe embedded in the rubber pad of the present invention.

Figure 3 is an (a) outline perspective view of an embodiment in which the elastic hook is integrally provided, and (b) an exploded perspective view of the inner structure (a rubber coating layer is not shown).

Figure 4 is a (a) the perspective view of the prior art, and (b) cross-sectional view that the angle bracket is integrally provided on one side of the rubber pad.

Figure 5 is a (a) outline perspective view and (b) cross-sectional view of the prior art in which the elastic hook (wire hook) is integrally provided on one side of the rubber pad.

6 is a perspective view of a shoe plate to which a rubber pad is attached.

<Description of the symbols for the main parts of the drawings>

100: pipe

110: female thread

120: protrusion

200: binding plate

300: Rubber coating layer

310: slope

400: Angle Bracket

410: vertical piece 411: coupling hole

420: horizontal flights

500: coupling bolt

600: elastic hook

610: connection wire

620: screw thread

7: Shoe plate

Claims (3)

It relates to a rubber pad fastened to the shoe plate of the steel crawler, Two pipes 100 arranged side by side, spaced apart from each other, and having female threads 110 at each end thereof; A coupling plate 200 which integrally connects the two pipes 100; A rubber coating layer 300 covering the entirety of the remaining portions except for both end surfaces of the pipe 100 connected integrally by the coupling plate 200; Each of which is coupled to both ends of the rubber coating layer 300 is composed of a vertical piece 410 and a horizontal piece 420, the vertical piece 410, the female screw provided on one side of each of the pipe 100 ( Two engaging holes 411 corresponding to the 110 are provided, and both ends of the shoe plate 7 of the steel crawler are in close contact with each other in the space between the horizontal piece 420 and the lower surface of the rubber coating layer 300. An angle bracket 400 accommodated; And, A coupling bolt 500 which is coupled to the female screw 110 of the pipe 100 by passing through the coupling hole 411 of the angle bracket 400; It is configured to include, The pipe (100) is a rubber pad for steel crawlers, characterized in that each of the protrusions are formed so as to form a protrusion (120). It relates to a rubber pad fastened to the shoe plate of the steel crawler, Two pipes 100 arranged side by side, spaced apart from each other, and having female threads 110 at each end thereof; The lower end is integrally coupled by the connection wire 610 in a state in which two wires bent in a 'c' shape are arranged side by side to be coupled to one end of each of the pipes 100 and the upper side. Each end has an elastic hook 600 having a thread 620 on the outer circumferential surface; The female screw 110 provided at one end of each of the pipes 100 is connected to the thread 620 of the elastic hook 600 to couple the two pipes 100 to the elastic hook 600. A coupling plate 200 which integrally connects the two pipes 100; The remaining portion of the pipe 100 except for the other end surface of the pipe 100 in a state in which the elastic hook 600 is fastened to one end of each of the pipes 100 and connected integrally by the coupling plate 200. A rubber coating layer covering the whole; It is coupled to the other end of the rubber coating layer 300 is composed of a vertical piece 410 and a horizontal piece 420, the vertical piece 410 is the female screw 110 provided on the other side of each of the pipe 100 Two coupling holes 411 are provided, and the other end of the shoe plate 7 of the steel crawler is tightly accommodated in the space between the horizontal piece 420 and the lower surface of the rubber coating layer 300. Angle bracket 400; And, A coupling bolt 500 which is coupled to the female screw 110 of the pipe 100 by passing through the coupling hole 411 of the angle bracket 400; It is configured to include, The distance between the elastic hook 600 and the lower surface of the rubber coating layer 300 is formed to be narrower than the thickness of the shoe plate 7 of the steel crawler so that the elastic hook 600 elastically supports the shoe plate 7 of the steel crawler. and, The pipe 100 is a rubber pad for a steel crawler, characterized in that each of the protrusions are formed so as to form a protrusion 120. The method of claim 1 or 2, One side lower surface edge of the rubber coating layer 300 to which the angle bracket 400 or the elastic hook 600 is cut is cut to form an inclined surface 310, rubber pad for steel crawler.

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