JPS6236698Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an elastic crawler track with improved running performance on soft ground.

Elastic tracks used as crawlers for agricultural machinery such as combines have a large number of lugs integrally molded on the outer circumferential surface, but when traveling on soft clay ground or frozen road surfaces, it is important to The grip may be weak, resulting in reduced traction or slippage.

Therefore, in the past, as disclosed in Japanese Patent Application Laid-Open No. 57-144174, a hard traction body was removably provided on the outer circumferential surface of the crawler track to improve running performance on soft ground, and also to be removed. Some vehicles are designed to prevent road damage, vibration, and noise on hard ground.

However, in this conventional device, the traction body is in direct contact with the outer peripheral surface of the crawler track, and the bolts that attach it pass through the core metal, so if the ground is soft or relatively hard, the traction body A relatively large impact is applied to the shoe, and it is difficult to absorb and alleviate the impact, which can not only damage the traction body but also shorten the life of the shoe and core metal.
Another problem is that the ride is uncomfortable.

In view of these conventional problems, the present invention provides a protruding base for attaching the towing body to the outer peripheral surface of the band-shaped main body, and arranges fasteners for attaching the towing body to the base on the outside of the core bar. By doing so, it is an object of the present invention to provide an elastic crawler track in which the impact received by the towing body can be sufficiently buffered by the base portion and the belt-like main body, and the durability, running performance, etc. are improved.

The features of the present invention to achieve this purpose are that apertures for engaging the drive sprocket are arranged in a row in the center of the main body, which is formed in an endless band shape from an elastic material, and a hole is provided between each opening. A core metal forming a ring-preventing guide protrusion is embedded, a number of lugs corresponding to the core metal are protruded from the outer peripheral surface of the main body, and a number of traction bodies are detachably attached at positions corresponding to the core metal. In the elastic crawler track, a traction body mounting base part having a mounting surface parallel to the outer peripheral surface is protruded at a position corresponding to the core metal every several lugs, and the base part is penetrated to the outside of the core metal. The point is that the towing body is fastened through the fastener.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes an elastic crawler belt, which is wound around a drive sprocket, a driven wheel, and a rolling wheel of an agricultural machine such as a combine harvester.
The elastic crawler track 1 has a main body 2 formed of an elastic material in the shape of an endless band, and has lugs 4 protruding from the outer peripheral surface 3 side of the main body 2 at regular intervals in the longitudinal direction of the belt, and guide protrusions on the inner peripheral surface 5 side to prevent the wheels from slipping off. 6 stands out.

In the central part 2a of the main body 2 in the band width direction, apertures 7 with which the drive sprocket engages are provided in a row in the longitudinal direction, and a metal core 8 is embedded between all the apertures 7. A protrusion formed on the core bar 8 forms the guide protrusion 6 .

9 is the central part 2 of the main body 2 in which the core metal 8 is embedded.
A is a circumferential reinforcing material embedded over the entire length in the longitudinal direction of the band, and is made of steel cord, fiber cord, etc., and passes on the left and right sides of the opening 7 and on the outer peripheral side of the core bar 8.

Although the lugs 4 are arranged at positions corresponding to the core metals 8, they are not present corresponding to all the core metals 8, and every other core metal 8 or every other core metal 8 has a base portion 11.
is installed protrudingly. The number of pedestals 11 is the same as or less than the number of lugs 4, and the sum of both is the same number as the core bar 8.

The shape of this base part 11 is the same as or different from the base part of the lug 4, and its upper surface is the top part of the lug 4.
a, and forms a mounting surface 12 parallel to the outer circumferential surface 3 of the central portion 2a, and this mounting surface 1
Two small lugs 13 are provided protruding from 2. The top 13a of this small lug 13 is at the same height as the top 4a of the lug 4 or higher, and the width of the top 13a in the circumferential direction is wider than that of the top 4a, and the rigidity per unit length in the band width direction is increased. It is increasing. small rug 13
A horizontally long one may also be formed.

Reference numeral 14 denotes a pulling body attached to the mounting surface 12 of the base portion 11, and as shown in FIG. It has a contacting mounting wall 17 in which holes 18 into which the two small lugs 13 fit are formed.

This towing body 14 is made of a material harder than the main body 2, such as metal, synthetic resin, or hard rubber, and the mounting surface 1
Although it may be the same size as 2, one side portion is made to protrude outward from the mounting surface 12 to form an enlarged traction portion 19. This enlarged traction portion 19 is attached to the mounting wall 17
is bent toward the inner circumferential surface 5 side, and the front and rear walls 15, 16 are approximately triangular in shape, and are shaped to increase soil shoveling force and traction force. The enlarged traction portions 19 may be formed at both left and right ends of the traction body 14, as shown in FIG. In this case, the left and right enlarged traction portions may be formed with different protrusion amounts. In addition, the cross-sectional shape of the towing body 14 is not only U-shaped but also H-shaped as shown in FIG.
It may be an L-shape or a T-shape with only one of the front and rear walls 15, 16. Furthermore, the front and rear walls 15,1
6 may have different heights, and as shown in FIG.
It may be configured to abut against the front and rear surfaces of the base portion 11 to increase the mounting strength.

Reference numeral 21 denotes a pedestal formed on both outer parts 2b of the main body 2, which is formed at a position corresponding to the pedestal part 11, and has a flat surface 22 that is parallel or flush with the inner circumferential surface 5 of the central part 2a. A reinforcing plate 23 is applied to this plane 22. This pedestal 21 and the pedestal portion 11 may or may not overlap the ends of the core metal 8.

The reinforcing plate 23 is a rectangular plate made of the same material as the traction body, and is in contact with or adhered to the plane 22. As shown in FIG. 6, this reinforcing plate 23 is made by bonding a patch plate 25 made of the same material as the main body 2 to a base plate 24 made of the same material as the towing body 14, so that the reinforcing plate 23 is bonded to the main body 2 more firmly and with excellent durability. The front and rear edges may be bent toward the main body 2 side to form the pedestal part 2.
It may also come into contact with the front and rear surfaces of 1.

The towing body 14 and the reinforcing plate 23 are fastened to each other by means of fasteners 29 such as bolts 26, washers 27, and nuts 28 that pass through the outside part 2b of the main body 2 so as to sandwich the outside part 2b. It is removable. The reinforcing plate 23 prevents the outer portion 2b from being damaged by the fasteners 29, and also stabilizes the attached state of the traction body 14.

The fastener 29 is located on the outer side of the core bar 8,
Therefore, the impact received by the traction body 14 is absorbed and relaxed by the outer portion 2b and the base portion 11, and is not propagated to the core bar 8. Note that this fastener 29 can be used to attach the towing body 14 to the main body 2 even without the reinforcing plate 23, and it is also possible to embed it in the outer part 2b of the head of the bolt 26 and attach only its tip. It may be made to protrude from the surface 12.

When the elastic crawler track 1 configured as described above is attached to a combine harvester or the like and used, at least one to three traction bodies 14 touch the ground, and the front and rear walls 15, 16, enlarged traction portion 19, etc. of the elastic crawler track 1 generate a traction force. is increased, slips are prevented, and in addition, shocks received by the towing body 14 are absorbed and softened by the thick elastic bodies of the platform 11 and the main body 2, and the shocks propagated to the fasteners 29 are absorbed by the core metal 8. It is absorbed by the elastic body of the outer part 2b and by the bending of the outer part 2b with respect to the central part 2a.

The elastic crawler track 1 is used with the traction body 14 and reinforcing plate 23 removed from the main body 2 when a large traction force is not required. In this case, the small lug 13 is attached to the base 11.
Since the footwear has a large rigidity per unit length, it functions in the same way as a conventional footwear without a traction body, and is particularly useful for dry fields.

According to the present invention described in detail above, the base portions 11 are provided protruding from the outer circumferential surface 2b of the belt-like main body 2 at every several lugs 4 and at positions corresponding to the core metals 8, and the mounting surface of the base portions 11 is The traction body 14 is removably attached to the traction body 12 via a fastener 29, and this fastener 29 is disposed through the main body outer part 2b on the outer side of the core bar 8, so that the traction force on soft ground can be enhanced. Even on relatively hard ground, the impact received by the towing body 14 can be absorbed and alleviated by the thick main body 2 with the protruding base 11, and the fastener 29 penetrates the core bar 8. Because I haven't
The outer portion 2b maintains sufficient flexibility, exhibits good cushioning properties and running performance, and improves the durability of the main body 2 and the traction body 14.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a cross-sectional perspective view, Figure 2 being a perspective view of the elastic track with the traction body removed, and Figure 3 being a partially cross-sectional side view. , FIG. 4 is a perspective view of the towing body, and FIGS. 5 and 6 are a perspective view and a sectional view, respectively, showing two modified examples of the towing body. 1... Elastic track, 2... Main body, 4... Lug, 6
... Guide protrusion, 7 ... Opening part, 11 ... Base part,
12... Mounting surface, 13... Small lug, 14... Traction body, 21... Pedestal, 23... Reinforcement plate, 29... Fastener.

Claims (1)

[Scope of utility model registration request] A core bar 8 has drive sprocket engagement openings 7 arranged in a row in the central part 2a of the main body 2 formed in an endless band shape from an elastic material, and a guide protrusion 6 for preventing wheel slippage is formed between each opening 7. In an elastic crawler track in which a large number of lugs 4 corresponding to the core metal 8 are provided protruding from the outer peripheral surface 3 of the main body 2, and a large number of traction bodies 14 are removably attached at positions corresponding to the core metal 8. At every several lugs 4, at a position corresponding to the core bar 8, a traction body mounting base part 11 having a mounting surface 12 parallel to the outer circumferential surface 3 is provided protrudingly. An elastic crawler belt characterized in that the towing body 14 is fastened through a fastener 29 that is passed through the elastic track.