JPH10175573A - Crawler device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enlarge the ground contact area of an iron shoe, sufficiently secure tractive force, and ensure the coupling with drive sprocket teeth at a wound section by providing connecting links between crawler component links adjacent in the crawler longitudinal direction, and connecting them with hinge members. SOLUTION: Crawler components 3 each having a shoe 1 and links 2 are provided in parallel in the crawler longitudinal direction, connecting links 4 are provided between the links 2 of the crawler components 1 adjacent in the crawler longitudinal direction, and they are connected by hinge members 5. Tubular track bushes 8 are provided in the front and rear of the right and left links 2, and a pin 9 is inserted into each track bush 8 to form the hinge member 5. When sprocket teeth are practically meshed with or removed from the track bushes 8, a crawler is circulatively rotated, and the crawler component 3 is bent at the wound section with a sprocket tooth centering on the hinge member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler component having a shoe and a link, such as an iron shoe or an elastic pad, provided side by side in the longitudinal direction of the crawler, and the links of the crawler component are connected by a hinge member. For example, it is used for construction and civil engineering, such as an excavator (backhoe), and an agricultural machine, for example, a combine.

[0002]

2. Description of the Related Art As an endless traveling device (crawler or crawler device) used as a suspension of construction / civil or agricultural machinery, a core bar (lateral reinforcement) is provided at intervals in the longitudinal direction of the belt (crawler longitudinal direction). A rubber crawler in which the body is embedded in an endless elastic crawler belt and a crawler component having an iron shoe or an elastic pad and a link are arranged side by side in the longitudinal direction of the crawler, and the link is connected endlessly by a hinge member such as a pin. There is something.

[0003] The former rubber crawler lacks a part of it,
Cracks and the like occur, and although other parts are sound, it is difficult or troublesome to repair some of them. Therefore, there is a strong tendency to treat them as waste, which leads to waste of resources. Was. In that regard, in the latter case where the crawler component is connected, even if a defect occurs in the crawler component, it can be replaced with a healthy crawler component.
Attention has been paid to an infinite traveling device using the crawler components.

[0004]

In an endless traveling apparatus using crawler components, the pitch (length) of the shoe and the pitch of the link are used in either an iron shoe type or an elastic pad type (hereinafter referred to as a shoe). (Length) has a one-to-one relationship, and when the shoe pitch is set short, the contact area (contact length) becomes small (short) and only the number of crawler components increases. However, there was a problem in terms of durability due to lack of traction.

On the other hand, when the shoe pitch is set long, the contact area (contact length) is large (long) and the number of crawler components can be reduced. However, there is a problem that it is difficult to smoothly wind (bend) the wire in winding, and it is easy to disengage the engaging and disengaging portion between the driving sprocket teeth and the engaging portion.

Accordingly, the present invention connects the crawler component parts (either iron shoe type or elastic pad type) with a dedicated connection link, so that the shoe pitch (length) is linked to the link pitch (length). ) Can be set to be short, and the contact area (length) can be increased (increased) to secure sufficient traction force, while ensuring engagement with the drive sprocket teeth at the winding section. It is an object to provide a traveling device.

[0007]

According to the present invention, a crawler component 3 having a shoe 1 and a link 2 is provided side by side in the longitudinal direction of the crawler, and the link 2 of the crawler component 3 is connected by a hinge member 5. In order to achieve the above-mentioned object, the following technical measures are taken in the endless traveling device.

That is, the infinite traveling device according to the present invention comprises:
It is characterized by being connected by a hinge member 5 with a connection link 4 interposed between links 2 of crawler component parts 3 adjacent in the crawler longitudinal direction, and by adopting such a configuration, The link pitch (P length) can be set shorter than the shoe pitch (length), and the contact area (length) of the iron shoe 17 or the elastic pad 7 is increased (increased) to ensure sufficient tractive force. Also, the engagement with the driving sprocket teeth (pins in the case of a pin driving body) in the winding portion is also ensured.

The shoe 1 of the crawler component 3 is
The elastic pad 7 may be an elastic pad 7 in which an elastomer material is adhered to the cored bar 6 (such as vulcanized adhesive), or an iron shoe 17 having a grouser 16. The hinge member 5 may be a sprocket tooth (for a pin driver). (Including pins) can be constituted by a cylindrical track bush 8 which engages and disengages and a pin (connecting pin) 9 inserted therethrough.

Further, the shoe 1 in the crawler component 3 has a length of two pitches of the link 2 with respect to one pitch of the link 2 in the crawler component 3, and the connection link 4
By having the same pitch length as the link 2, the crawler component 3 and the connection link 4 can be arranged alternately (alternately) in the crawler longitudinal direction, and the connection by the hinge member 5 becomes easy. is there.

When the crawler component 3 is chipped or damaged, it can be replaced with a new crawler component 3.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1A and 1B, a crawler component 3 having a shoe 1 and a link 2 is shown.
Are arranged side by side in the longitudinal direction of the crawler (in the left-right direction in FIGS. 1A and 1B), and a hinge member is provided between the links 2 of the crawler component parts 1 adjacent to each other in the longitudinal direction of the crawler with a connection link 4 interposed therebetween. 5 is connected.

In the first embodiment shown in FIGS. 1A and 1B, the shoe 1 is attached to a cored bar 6 having left and right links 2 integrally.
An elastic pad type crawler component 3 in which an elastic pad 7 made of an elastomer material such as rubber or urethane is adhered by vulcanization or the like. The shoe pitch is 2P with respect to the link pitch P. The ground area (length) is set to be approximately twice the link pitch, and the length of the connection link 4 is the same as that of the link 2.

Therefore, the contact length of the elastic pad 7 is sufficiently ensured, the surface pressure (contact pressure) is kept low, a large traction force is maintained, and the engagement pitch with the driving sprocket teeth (pins in the case of a pin driver). Is the link pitch, which guarantees reliable engagement and disengagement at the winding part. Also, as shown in FIG. 1 (B), the elastic pad 7 has lugs 7B and 7C protruding back and forth through an intermediate groove 7A,
With the groove 7A, drainage and snow removal can be achieved and a large traction force can be secured. The formation pattern of the lugs 7B and 7C is arbitrary along with the groove 7A.

The metal core 6 having the left and right links 2 integrally, that is, the track link is a molten metal (metal or resin).
May be cast into a molding die and integrated, or the cored bar 6 and the left and right links 2 may be separately manufactured by casting or forging and joined by welding. . The left and right links 2 are each provided with a tubular track bush 8 before and after the link, and the hinge member 5 is formed by inserting a pin 9 into the track bush 8. The track bush 8 has substantially sprocket teeth. By being disengaged, the endless traveling device circulates and revolves, and the crawler component 3 is bent with the hinge member 5 as a base point (center) at the winding portion with the sprocket teeth or the like.

The middle portions of the left and right links 2 and the dedicated connection link 4 in the link longitudinal direction are thick portions 2A, 4 respectively.
A, and a stepped portion 2B,
4B, the thick portions 2A, 4A are formed with mud holes 10 for discharging mud, muddy water, snow, and the like to the outside of the crawler. Mud holes 11 similar to those described above are also formed in the shoe 1 between the track bushes 8, and by forming these holes 10, 11, mud clogging (snow clogging) on the inner periphery of the crawler is reduced. At the same time, the weight is reduced to reduce waste of energy consumption in any case.

FIGS. 2A and 2B show a second embodiment, in which a recess 12 is formed at the center in the width direction before and after the shoe 1 (the elastic pad 7 in the embodiment). Mud holes 13 are also formed between the left and right connection links 4 to reduce mud clogging (snow clogging) on the inner periphery of the crawler, reduce weight, and further reduce waste of energy. In addition, since other configurations and operations are common to the above-described first embodiment, common portions are denoted by common reference numerals.

FIGS. 3A and 3B show a third embodiment, in which a female fitting portion 14 is formed by a concave portion on one of the front and rear sides of a shoe 1 (elastic pad 7 in the embodiment) and a convex portion is formed on the other. When the crawler component 3 is made to be adjacent to the crawler component 3 by forming the male fitting portion 15 by the portion, the male and female fitting portions 14 and 15 are fitted into each other to prevent the crawler component 3 from laterally displacing, and the winding portion Bending is allowed, and other configurations and operations are common to those of the above-described first embodiment. Therefore, common parts are indicated by common reference numerals.

FIG. 4 shows a fourth embodiment in which the shoe 1 is an iron shoe 17 having a grouser 16, and the grouser 16 is of a single type, a double type as shown, or a triple type. Is good
The other parts are common to the first embodiment described above, and the common parts are indicated by common symbols. In the fourth embodiment shown in FIG. 4, the above-described second and third embodiments can be adopted. The infinite traveling device according to the present invention includes a crawler component of an elastic pad type and a crawler of an iron shoe type. The components can be arranged side by side in the longitudinal direction of the crawler, and the links can be connected by dedicated connection links.

[0020]

As described in detail above, according to the infinite traveling device of the present invention, the contact area (length) of the shoe (iron shoe, elastic pad) is ensured as much as necessary, and the Can be reliably and smoothly performed.

[Brief description of the drawings]

1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a plan view of a main part, and FIG. 1B is a side view.

2A and 2B show a second embodiment of the present invention, wherein FIG. 2A is a plan view of a main part, and FIG. 2B is a side view.

3A and 3B show a third embodiment of the present invention, wherein FIG. 3A is a plan view of a main part, and FIG. 3B is a side view.

FIG. 4 is a side view of a main part showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 shoe 2 link 3 crawler component 4 connection link 5 hinge member

Claims (6)

[Claims] 1. A crawler component (3) having a shoe (1) and a link (2) is provided side by side in the longitudinal direction of the crawler, and a link (2) of the crawler component (3) is connected to a hinge member ( In the infinite traveling device connected in 5), the link (4) is interposed between the links (2) of the crawler component parts (3) adjacent in the crawler longitudinal direction and connected by the hinge member (5). Infinite traveling device characterized by being. 2. A shoe (1) for a crawler component (3).
2. An infinite travel device according to claim 1, wherein the elastic member is an elastic pad having a core metal coated with an elastomer material. 3. A shoe (1) for a crawler component (3).
2. An infinite travel device according to claim 1, wherein the at least one is an iron shoe (17) having a grocer (16). 4. The hinge member (5) comprises a cylindrical track bush (8) with sprocket teeth engaged and disengaged and a pin (9) inserted through the bush (8). Item 5. An infinite traveling device according to any one of Items 1 to 3. 5. A connection link wherein the shoe (1) in the crawler component (3) has a length of two pitches of the link (2) for one pitch of the link (2) in the crawler component (3). The infinite traveling device according to any one of claims 1 to 4, wherein (4) has the same pitch length as the link (2). 6. A female / male fitting portion (14) which allows the shoes (1) of the adjacent crawler component (2) to bend with each other when bent about the hinge member (5) as a fulcrum.
The infinite traveling device according to any one of claims 1 to 5, further comprising (15).