JPS5871275A - Resilient endless track belt - Google Patents

Abstract

PURPOSE:To prevent the storage of mud at the front face when travelling, by stretching the end section of a lug while inclining the vane section inwardly and deforming the crawler grounding face through the grounding pressure thereby improving the effect for pushing the mud sideway. CONSTITUTION:The end section of a lug 1 is stretched high to provide a stretched lug 1a while a vane 4 is inclined inwardly. Said lug 1a is first grounded to deform a crawler through the grounding pressure and since the vane 4 is inclined the mud is discharged easily to the sideway. Consequently the mud will not be stored at the front face in the travelling direction thereby the propulsive force will never deteriorate.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an elastic infinite qIIt belt (hereinafter referred to as p-ra) which is attached to vehicles such as Bester, and particularly to muddy ground suitable for running on muddy ground such as wet fields.

Conventionally proposed crawler t/:I: Especially for locating and moving in muddy areas such as wet fields. Mud accumulates in front of the vehicle in the direction of travel.
If you have to drive while pushing this away, you will lose a lot of traction power.

The present invention is. What is the feature of this product which eliminates this drawback and provides a p-ra?

C [A large number of core metals arranged horizontally at regular intervals.
A tensile reinforcing material surrounding this row of core metals is embedded in a rubber elastic body, and propulsion lugs are provided at regular intervals on the outer circumferential surface. The outer end of the circumferential surface is made higher than the rolling wheel passage surface, and the non-lug portion of the outer circumferential surface gradually moves toward the inner circumferential side in the wing section from near the end of the core bar to the outer end in the width direction. The outer end of the inclined surface in the width direction is located at approximately the same horizontal position as the wheel passing surface, or is located on the inner peripheral side thereof, and extends outward in the width direction from the vicinity of the wing portion. The crawler is characterized in that the lug portion extending to the end portion extends beyond the other lug portions to the ground contact surface τill, and preferably the wing portion from near the end of the core metal to the outer end in the width direction is thin-walled. It is best to use a flexible plate.

Thus, according to the present invention, the center portion of the crawler body including the core metal row and the center lug portion below the center portion support most of the weight of the vehicle, and the outer circumferential surfaces of both wing portions that are detached from the core metal are in the center portion. Jiff within the plane or curved surface
10 Since the VCPM is slanted, when traveling in a wet field, the center part of the crawler body and the center part of the lug sink down to the hard soil layer inside the wet field, and θ at both wing parts that momentarily contact the center part.

Since this curves toward the inner circumferential side and advances while expelling mud to the left and right, mud retention Vi hardly occurs on the front surface of the roller, and therefore, 1st of the traction force becomes very small. If the wing part is a flexible plate, when traveling,
By curving the mud, the mud is distributed to the left and right without reducing the propulsion force, and the mud and sand that climbs over the tip and accumulates on the inner circumferential surface of the track belt is extremely reduced. This prevents jamming and prevents wheels from falling off.

The second feature of the present invention is that the lug portions of the wings in the width direction of the wing are made to protrude toward the ground plane.

That is, since the contact surface of the lug is low at the center and concave and high at the outside, the vehicle body load M received at the center of the lug is first applied to the outside lug.

Next, after elastic deformation of the lug occurs, it is applied to the center of the lug, and the elastic four-dimensional force of the lug increases the ground pressure of the outer lug part, thereby pushing the mud stuck between the lugs to the side. At the same time, the deformation of the lug causes the contact surface side of the p-ra to bend inward, thereby increasing the traction force at the side edge of the jam, which has the effect of enhancing the mud discharge effect. In addition, since the lug portion on the outer side of the wing is warped more toward the inner circumference of the crawler, the side edge of the μm becomes higher, making it difficult for foreign matter such as a single mud stone to enter the inner circumferential surface of the p-ra. In addition, the ground contact pressure of the outer wing lug portion is high (this makes it difficult to cause sideslip when driving on slopes, resulting in safe W running, and since lug wear progresses from the outer portion, the center According to a preferred embodiment of the present invention, the standard height portion of the crawler has advantages such as longevity of the crawler.

The raised lug portions protrude from the sides of the p-ra to form fin-like portions. Such a configuration Vi% is effective when driving in muddy areas such as wet fields.

Even if mud gets clogged between the lugs, the mud can be easily drained between the fins, and the fins scrape the mud to maintain traction, and this action improves the traction of the outer lugs mentioned above. Combined with the action, tall tree attraction in mud areas is obtained. In that case, it is preferable to position the raised lug portion on the outer side of the buried core metal, and in this way, it is possible to increase the mud scraping W1 of the fin-like portion and bring about the desired traction force imparting effect. can. Further, in another embodiment, the lugs are formed to be long and short, or every other lug is shortened on one side of the p-ra, and in this way, the discharge effect due to high ground pressure is achieved in the part where the lug pitch is widened. At the same time, the curvature of the side edges of the wing parts promotes the fluidity of the mud. Also.

By making the height of the lug on the side of the p-ra relatively high, it is possible to increase the traction force and improve the running performance of the hemorrhoid 81.

The present invention will be explained in more detail below with reference to embodiments shown in the accompanying drawings.

Fig. 1 is a perspective view of a part of the crawler crawler of the present invention as seen from the ground plane side, and in Fig. 1 1 is a lug 7'I formed at intervals on the outer peripheral surface of the crawler. The outer portion of each lug [a] extends toward the ground surface from the central lug portion 1b.

Figure 2 V (as shown, the lug height is increased by h. The value of h is selected as appropriate depending on the weight of the vehicle body, etc.)
Practically speaking, approximately 5 to 30++ rm, particularly around 20 mm, is appropriate. As is especially clear from Figure 2, the ground contact surface of lug 1 has a concave shape that is low at the center and high at the sides, and the vehicle body load applied in direction P through the wheels at the center of the lug. D. First, the stiffness is applied to the outer lug portion 1a, which is bent in the direction of arrow R by the reaction from the ground, and then is applied to the lug central portion 1b. At that time, the elastic restoring force d of the outer lug portion 1a increases its ground pressure, thereby exerting the effect of pushing out the mud stuck between the lugs to the side lug, and the deformation of the lug increases the ground contact surface of the p-ra. Since the sides are bent inward, the wing portion 4 is curved more than the outer end of the wing portion is originally located at approximately the same position as the wheel passing surface 5 or on the inner circumferential side thereof. Therefore, the curvature of this tip 41 has a function of distributing the earth and sand to the left and right.

This has the great effect of reducing the amount of mud that can climb over the mud.On the other hand, the lug portion 1a, which is strengthened by the outer force of the wing portion 14, forms a so-called fin-like portion, and this serves to remove the mud. It plays the role of a scratching oar and also contributes to increasing the pulling force of the p-ra.

In the figure, what is the degree of slope O in ■1? j An inclination of approximately 10° to 3 (1') is preferred in order to make it easier for mud to escape from side to side and to allow the lugs at the width ends to be high.

In the present invention described above, it is also possible to apply the present invention to only one end instead of one width end.

The one shown in Figure 1 has a wing part 1↓ and an overhanging lug part 1a formed only on one end.The one shown in Figure 1 has a wing part 1↓ and an overhanging lug part 1a on both ends, but the overhanging lug part 1a is only on one side. The case where it is formed is shown. These modifications are taken into consideration depending on the installation position of the aircraft, and in Figure 1, the wing section) 1
It is attached to the fuselage with the side facing outward, and as shown in Fig. 11, it is normally attached with the overhanging lug side facing outward. This is because if a highly deformed wing (1) is brought inside the fuselage, it will come into contact with the fuselage, causing cuts, uneven wear, etc.

As described above, in the present invention, the slope of the wing section makes it possible to remove mud (
The height of the lugs at the ends of the width of the Katsuri P-Ra can be set high, so the traction force is large and the traction is effective when driving in damp conditions. Since the wing portion is raised, foreign objects are prevented from getting caught.Furthermore, the pressure at the end of the p-ra can be increased, which has practical value as it provides high stability even when driving on slopes.

[Brief Description of the Drawings] Fig. 1 shows a part of the crawler according to the present invention.
Figure 2 is a sectional view taken along the nn plane of Figure 1, and Figures 5 and 11 are elevation views similar to Figure 2. 1... Lug, la... Overhanging rug, 2... Core metal. 4... Wing section, 5... Wheel passing surface Figure 1■

Claims (1)

[Claims] (1) A large number of core metals arranged horizontally at predetermined intervals and tensile reinforcing materials surrounding the rows of core metals are embedded in a rubber elastic body, and propulsion lugs are placed at regular intervals on the outer peripheral surface. In the elastic endless track belt comprising the above, at least one outer end of the inner circumferential surface in the width direction is made smaller than the roller passing surface. The non-lug portion of the outer circumferential surface is gradually inclined toward the inner circumferential side in the wing portion from near the end of the core bar to the outer end in the width direction. A lug portion in which the outer end in the width direction of the inclined surface is located at approximately the same horizontal position as the wheel passing surface, or is located on the inner peripheral side thereof, and extends from the vicinity of the wing portion to the outer end in the width direction. An elastic endless track belt that is characterized by having the lugs protrude toward the ground surface from the other lug parts. (2. In the elastic endless track belt according to claim 1, the elastic endless track is characterized in that it is a wing-like flexible plate extending from the vicinity of the end of the core bar to the outer end in the width direction. band.