JPS6411513B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present inventor previously proposed Japanese Patent Application No. 109683/1983. This system replaces steel track pillars with rubber crawlers that can withstand large loads, ensuring that work is not hindered and that road surfaces are not damaged when driving on paved roads. This is to ensure that no
Its characteristic feature is that a pair of protrusions are erected facing each other inside the center of the rectangular planar member, and each protrusion has a T.
A large number of core metals are formed into grooves to prevent dislodgement and have a certain size between opposing sides, and are embedded perpendicularly to the length direction inside the crawler body made of rubber. In addition to protruding from the crawler body, steel cords are placed in parallel along the length of the crawler body on the lower surface of the core bar except between the protrusions, and the upper surface of the protrusions is placed on the side of the roller by sandwiching a groove to prevent it from coming off. It is characterized by a structure in which the body part rotates.

The present invention relates to an improved invention of the above-mentioned application, that is, by filling both sides of the T-shaped protrusion with rubber, the distortion of the core metal when receiving an uneven load is minimized. In addition to dramatically improving durability, the top surface of the T-shaped protrusion and the corresponding lug on the ground surface side are By providing vertical ribs with the same area, the ground contact area is increased to minimize vibrations and bending deformation during running, and mud drainage is also improved. Also, T
By forming both shoulders of the letter-shaped protrusion into curved surfaces, it is possible to completely eliminate the phenomenon of core metal peeling off that occurs when stones are caught in the free wheel or drive wheel during driving. It is.

Hereinafter, an example of implementing the present invention will be described based on the accompanying drawings.

FIG. 1 is a perspective view of a metal core used in the present invention. As shown in this figure, the core bar 1 is a rectangular flat member with a pair of retaining protrusions p, p located at the center of the core bar 1.
It is formed in a letter shape, and these protrusions p, p
The vertical width l′ of the groove F sandwiched between them is equal to that of both ends l
It is designed to be the same or slightly smaller than the In this case, to make l'≦l, a large number of core metals 1 are connected to the rubber crawler main body 2 as described below.
In addition to making it possible to embed it in the sprocket wheel to increase the overall strength, the distance H between the notched through holes 11 that are locked by the sprocket wheel during driving is made relatively narrow to facilitate the transmission of driving force. This is to ensure that it is done firmly and reliably.

FIG. 2A is a plan view of a rubber crawler in which the core metal 1 is embedded as seen from the rolling wheel side, and FIG. 2B is a sectional view taken along the line X--X in FIG. As shown in this figure, the T-shaped upper surface of the protrusion p is exposed from the rubber.
Both sides f of the T-shaped protrusion p are the rubber crawler body 2
Similarly, it is filled with rubbery material. In this case, the material of the core metal 1 is exclusively special steel such as S-45°C or other metals with high hardness and high wear resistance.

In the present invention, both sides f of the T-shaped protrusion p are filled with rubber, which effectively prevents the core metal from floating due to changes in the load received during driving. This is extremely effective in minimizing the strain caused by the load. In addition, in this embodiment, the other configurations except for the parts related to the core metal are the same as those conventionally known, and the explanation is omitted. The wall thickness dimensions of the rubber crawler main body 2, lugs 3, etc., the cord diameter and number of the steel cords 4, etc. are designed to be different as appropriate.

FIG. 3 is an enlarged plan view seen from the ground plane side, and the ground plane corresponding to the top surface of the T-shaped protrusion of the core metal 1 in the lug 3 provided in the width direction as shown in this figure. A vertical rib 3' having an area approximately equal to the top surface of the T-shaped protrusion is provided on the side. At this time, the vertical ribs 3' are formed to sandwich each end of the adjacent locking notches 11 of the sprocket wheels so as to effectively receive the rolling wheel load of the T-shaped protrusion P. In addition, the purpose is to increase the ground contact area and prevent the crawler body 2 from suddenly bending, thereby reducing vibrations as much as possible during running. Mud removal will also be done well.

FIG. 4 is a perspective view of a core metal 1' showing another example, in which both shoulders of a T-shaped protrusion p' are formed into gently curved surfaces e. FIG. 5 is a longitudinal sectional view of a rubber crawler in which the core bar 1' is embedded.
In this example, both sides f' of the T-shaped protrusion p' are filled with rubber, as in the previous example. As in this example, when both shoulders e of the T-shaped protrusion p' are formed into a gently curved surface, this occurs when a stone or the like gets caught in the idle wheel or drive wheel while driving. This is excellent in preventing the peeling-off phenomenon of the core metal.

The present invention is constructed as described above, and the distortion of the core metal is minimized as much as possible due to uneven loads especially when working in uneven places or when traveling, and the interface between the core metal and the rubber is Since the shear deformation caused by this process is small, the bond between the core metal and the rubber is protected and durability is improved. In addition, the vertical ribs on the ground contact side of the crawler body are configured to be long in the circumferential direction of the crawler, corresponding to the top surface of the T-shaped protrusion around which the wheel-side body rotates, reducing vibrations during running. In addition, bending deformation is reduced, which improves the durability of the crawler as a whole, and also improves mud drainage.

[Brief explanation of drawings]

The attached drawings show an example of the implementation of the present invention, and are the first drawings.
The figure is a perspective view of the core metal, Figure 2A is a plan view of the rubber crawler in which the core metal is embedded, seen from the rolling wheel side, Figure 2B is a sectional view taken along the line X--X of Figure A, and Figure 3 is the ground contact surface. FIG. 4 is an enlarged plan view as seen from the side, FIG. 4 is a perspective view of a core bar showing another example, and FIG. 5 is a longitudinal sectional view of a rubber crawler in which the core bar is embedded. 1...Core metal, 2...Rubber crawler body, 3...
Lug, 4...Steel cord, H...Notched hole,
F...groove, f...armpit, e...shoulder.

Claims (1)

[Scope of Claims] 1. A pair of protrusions are erected facing each other inside the center of the rectangular planar member, each protrusion is T-shaped, and a groove of a certain size is formed between the opposing protrusions to prevent dislodgement. A large number of core metals are buried perpendicular to the length direction within the crawler body made of rubber, and the upper surface of each protrusion protrudes from the crawler body, and the lower side parts of each protrusion are made of rubber. On the one hand, steel cords are arranged in parallel in the length direction of the crawler body on the lower surface of the core except between the protrusions, and on the other hand, the ground side of the crawler body corresponding to the top surface of the T-shaped protrusions is is provided with a vertical rib having an area substantially equal to the top surface of the sprocket wheel, and the vertical rib is configured to be sandwiched between each end of adjacent locking cutout holes of the sprocket wheel. elastic band crawler. 2. The elastic band crawler of claim 1, wherein both shoulders of the T-shaped protrusion of the metal core are formed into gently curved surfaces.