JPS6318553Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a plurality of track plates that are connected together to form a crawler track for running a vehicle.

Conventional special vehicles are generally equipped with double pin separation type tracks as shown in Figs. They are separably connected via pins b, b, and the adjacent connecting pins b, b of the adjacent link bodies a, a', a, a' connect the center guide c, the center connector d, and the left and right ends. They are connected by connectors e and e. By the way, as shown in Fig. 3A and B, the tracks constituting the double pin separation type track are iron tracks whose ground contact part (hereinafter referred to as grouser) is made of iron.
G _s and rubber track G _R whose grouser is made of rubber as shown in Fig. 4A and B. The former has a spike effect and is mainly used for rough terrain where traction is required. The latter is mainly used for paved roads that do not damage the road surface, and it is usually necessary for one vehicle to have two types of tracks, one for rough terrain and one for paved roads.

Therefore, as a crawler track to solve this inconvenience, Fig. 5A,
As shown in Figure B and Figure 6, when driving on paved roads, normally the vehicle is driven on iron shoes without pads.
There is a type that is equipped with a rubber pad _P1 as shown in Fig. 7. However, in the case of a double-pin separated type track consisting of 150 to 180 tracks for one car, the number of link bodies a and a' is twice the number of link bodies of the integrated type, so _the number of rubber pads P is 300. ~
The number reached 360, which had the disadvantage of making the process of installing the rubber pads P ₁ very complicated. In addition, in the case of heavy vehicles, the pad contact area S for the vehicle weight WKg
Since it is a separate type, it cannot be made very large, and the pad surface pressure P=W/S [Kg/cm ² ] increases.
There was a problem with the lifespan of the rubber pad _P1 being chipped.

In addition, as conventional crawler tracks, Fig. 8 to 10
There is also a single-pin integrated crawler track with removable rubber pads _P2 , as shown in the figure. In this type of track, the drive tooth holes (sprocket holes) H and H of the track drive wheel (sprocket) are located on both sides of the track, so the rubber pad _P2 is large compared to the track width _W1 . Because the width dimension W ₂ is small and the l dimension of this type of shoe is generally small, rubber pads are
The ground contact area of P ₂ could not be increased, and the surface pressure on the rubber pad increased, and like the rubber pad P ₁ of the double pin separation type track described above, the rubber pad P ₂ was disadvantageous in terms of life. Further, since the rubber pad _P2 has only one pad fixing bolt n, when driving on rough terrain, etc., where the rubber pad P2 is subject to heavy loads in an undefined direction, the bolt mounting part may be damaged due to lack of rigidity. In addition, unlike the above-mentioned double pin separation type crawler track, this type of crawler track has many hinge parts, so it is difficult to match the concentricity of the single pin and the hinge hole, which is disadvantageous in terms of workability in assembly and disassembly.

This idea was made in view of the above points.In other words, this idea allows the pad to have a large ground contact area and extend the life of the pad.It also allows the pad to remain stable even when driving on rough terrain, etc., which is subject to heavy loads in an undefined direction. In addition, the pads can be easily installed and removed, and the weight can be reduced, reducing the load on the connecting pins, making it possible to construct tracks not only for light and medium vehicles but also for heavy vehicles. The purpose is to provide footwear.

Therefore, in order to achieve this object, this invention has a pair of left and right link bodies 2, as shown in FIGS. 11 to 15 corresponding to the embodiment.
2 are integrally connected by a center guide 3 protruding from the upper surface side in the middle thereof to form an integral link body, and the front edge and rear edge of this integral link body are provided with grooves in the width direction. Connecting pins 4, 4 are provided penetrating therethrough, and a large number of identical link bodies are joined endlessly in the longitudinal direction, and intermediate portions of adjacent connecting pins 4 of the integral link bodies that are joined to each other are connected by a center connector 5. Further, in the track board 1 whose protruding ends are rotatably connected to each other by end connectors 7, 7 to form a crawler track for running a vehicle, the ground plane of each integral link body has a ground plane that is approximately parallel to the ground plane. An integral pad 11 having a common covering shape is attached to each pad, and each pad 11 has a shape in which a pad portion 12 is polymerized and fixed to the bottom surface of a pad metal fitting 13 forming a base plate. Studs 14, 14 made of bolts are inserted into the pad metal fitting 13 through holes provided at both widthwise ends of the metal fitting 13.
The studs 14 are provided in a protruding manner with their large diameter heads in contact with the bottom surface of the stud holes 10 provided on both sides of the corresponding integral link bodies.
a, 10a to the upper surface side of the link body, and is fixed by screwing a nut 14a to the projection, and contacts both side surfaces of each pad 11 on both sides of the bottom surface of each integral link body. Grousers 1b and 1c, which are frame-shaped protrusions into which the outer circumferential surface of each pad 11 fits, are integrally formed at the position, and each pad 11 has the center connector 5.
It is characterized in that relief grooves 15 are provided on both sides of the central portion of the upper surface corresponding to the grooves 15, which are inclined outwardly and downwardly.

This invention will be explained below with reference to illustrated embodiments.

FIG. 11 is a partial external view of a crawler constructed from the crawler according to this invention, FIG. 12 is a top view of the same crawler, and FIGS. 13A and B are a front view and a bottom view of the same crawler. , FIG. 14 is a sectional view taken along the - line in FIG. 11, and FIG. 15 is an external view of the pad attached to the track board.

Each of the tracks 1, 1 constituting the double pin track shown in FIG. 11 is connected to the left and right link bodies 2, 2 and between the link bodies 2, 2 as shown in FIGS. It has a center guide 3 which is provided to protrude from the upper surface side and connects the link bodies 2, 2 to form an integral body. This track board 1,
1 have two connecting pins 4, 4 attached to each, and in this embodiment, adjacent track plates 1, 1 are connected by stopping the adjacent connecting pins 4, 4 at three locations. That is, as shown in FIGS. 11 and 14, the center portions of adjacent connecting pins 4, 4 are connected via a fixing bolt 6 by a center connector 5 consisting of upper and lower connector portions 5a, 5b. , the left and right ends of the adjacent connecting pins 4, 4 are connected to the end connectors 7, 4, as shown in FIG.
They are connected by 7. The space between the end connectors 7, 7 and the opposing connecting pins 4, 4 is used as an engaging portion 8 for the teeth of a crawler drive sprocket (not shown). Further, on both sides of the center guide 3 of each track board 1, link rubbers 9, 9 having excellent wear resistance, such as rubber plates, for receiving a road wheel (not shown) are baked, and the link rubbers 9 and the above-mentioned There is a recess 1 between the joint 8 and the joint 8.
0 is formed. Each recess 10 has a twelfth
As shown in the figure, stud 1 of pad 11, which will be described later.
A stud hole 10a into which a tool 4 is inserted is provided, and an escape recess 10b for inserting a tool is provided around the stud hole 10a.

On the other hand, a first
As shown in FIGS. 3A and 3B, an integral pad 11 is detachably attached. In detail, the 14th
As shown in FIG. 15 and FIG. 15, the pad 11 includes a pad portion 12 made of an elastic material with high wear resistance such as rubber, and a pad metal fitting 13 integrated with the pad portion 12. is the first
As shown in FIG. 3, grouser 1b, 1b, 1 is formed in an appropriate shape and protrudes from the corner of the ground plane 1a.
It has a shape that allows it to be fitted into 1c and 1c. Further, as shown in FIG. 15, two studs 14, 14 are provided at both ends of the pad fitting 13 in the width direction (longitudinal direction). Hole 10a, 1
0a and is fixed to the ground surface 1a of the track board 1 via a nut 14a. In addition, padded metal fittings 1
As shown in FIGS. 14 and 15, relief grooves 15, 15 are formed in the upper surface of the connector 3 at positions on both sides of the center portion of the upper surface corresponding to the center connector 5. These clearance grooves 15, 15 are inclined outwardly (in the longitudinal direction of the track) and downward at a clearance angle θ, and this clearance angle θ is such that each track 1 is tilted in the direction of arrow Rd (see Fig. 14).
The angle is set at such an angle that it will not interfere with the center connector 5 even if it swings. Further, reinforcing ribs 16 are appropriately provided on the pad metal fitting 13 between the left and right studs 14, 14 as required.

Next, the operation of the above configuration will be explained.

First, when traveling on a paved road, it is sufficient to travel with the pads 11 attached to each track 1 making up the crawler track. At this time, the surface pressure applied to the pads 11 is P=W/S [Kg/cm ² ] (where W: vehicle weight S: pad contact area), but the pressure applied to the left and right link bodies 2 of the track 1,
2 are integral, and as mentioned above, the pad 11 has a large ground contact area, which is approximately equal to the area of the ground contact surface 1a of the track shoe 1, so that the surface pressure expressed by the above equation can be reduced. Therefore, excessive force is not applied to the pad portion 12 of the pad 11, and damage such as chipping can be prevented, resulting in a longer service life and longer running distance. Furthermore, since the pad 11 is fixed at both ends with two studs 14, 14, the rigidity of the fixing force can be improved compared to the conventional pad fixed with one stud.

In addition, when driving on uneven ground that is subject to a heavy load in an undefined direction with the pads 11 attached, each track shoe 1 swings in the direction of arrow Rd in FIG. 5 and the track board 1 can be prevented from interfering with each other.

Furthermore, when the pads 11 are removed from each track 1 and the track is run using the grouser 1b, 1c,
To remove the pad 11, simply remove the stud 14,1.
It is sufficient to simply remove the nut from 4 and pull it out from the stud hole 10b, and conversely, when attaching the pad 11, the reverse operation may be performed. Moreover,
The number of pads attached to conventional double-pin separation type track shoes (for example, 300 for one car as mentioned above)
Since the number of pads 11 installed is half compared to the previous version (up to 360 pieces), the number of pads 11 installed is half that of the 360 pieces.
1. Attachment and detachment work can be done easily.

Incidentally, when driving on either paved roads or rough terrain, the load from the road wheels is supported by the link bodies 2, 2 of each track 1, and the driving force of the track from the sprocket is transferred to the connecting pins 4, 4. Since only the corresponding tension is applied, the load on the connecting pins 4, 4 is reduced, which is advantageous in terms of pin strength, and the life of the connecting pins 4, 4 can be improved. Also,
Since the center guide 3 and the link bodies 2, 2 are integrally constructed, the weight of the crawler track can be made slightly lighter than that of the conventional one.

As explained above, this invention has the following features and effects.

(1) The left and right pair of link bodies 2, 2 are integrated by the center guide 3, and one common pad 11 is attached to each integrated link body, so even with double pin type track shoes, the pad contact area can be reduced. By increasing the pressure, the surface pressure on the pad can be reduced, extending the life of the pad, and preventing damage to the pad even on rough terrain that is subject to heavy loads in an undefined direction.

(2) Even with double-pin type track shoes, the number of pads can be halved compared to conventional shoes, making it easier to attach and detach the pads.

(3) Since the link body and center guide are integrated, it is possible to reduce the weight of the crawler track, reduce the load on the connecting pin, and improve the life of the connecting pin.

(4) The tracks of this invention can be constructed into a double-pin type track, so they can be used not only for light and medium vehicles, but also for heavy vehicles such as armored combat vehicles, making them highly versatile.

(5) Since the pad 11 is fitted in the frame-shaped grouser 1b, 1c that protrudes from both sides of the bottom of the integral link body, it can be used even if it is subjected to an impact load in an indeterminate direction. Since the stress is not concentrated only on the stud 14 of the pad 11, but is dispersed by the grouser 1b, 1c, damage to the pad 11 and its stud 14 is prevented, and reliability with plenty of strength is achieved. We can provide high track shoes.

(6) Furthermore, since the stud 14 is protruded with its large diameter head in contact with the bottom surface of the pad metal fitting 13 that forms the base plate of the pad 11, it is possible to prevent the stud from separating from the pad. do not have.

(7) By removing the pads 11, the grouser 1b, 1c provided in advance on the track can be used as a track for rough terrain.

(8) When driving on uneven ground that is subject to heavy loads in an undefined direction, with the pads 11 attached, each shoe
1 swings, but interference with the center connector 5 can be prevented by the escape grooves 15, 15.

[Brief explanation of drawings]

Figure 1 is an external view showing the conventional track for special vehicles, Figure 2 is a sectional view taken along the - line in Figure 1, and Figures 3A and B are conventional steel tracks (for running on rough terrain). Figures 4A and 4B are front and bottom views of conventional rubber shoes (for running on paved roads), and Figures 5A and B are of conventional shoes with removable rubber pads. A front view and a bottom view showing the plate, FIG. 6 is a sectional view taken along the - line in FIG. 5 A, FIG. 7 is an external view of the rubber pad in FIG. 6, and FIG. Fig. 9 is a bottom view of the single-pin integrated track shoe, Fig. 10 is an external view of the rubber pad shown in Fig. 9, and Fig. 11 is an external view of the shoe shoe according to this invention. 12 is a top view of the shoe, FIGS. 13A and 13B are a front view and a bottom view of the shoe, and FIG. 14 is the − of FIG. 11.
A cross-sectional view taken along the line, FIG. 15, is an external view of the pad attached to the track board. 1... Track shoes, 1a... Ground contact surface, 1b, 1c...
Grocer, 2... Link body, 3... Center guide, 4... Connection pin, 5... Center connector,
7... End connector, 11... Pad, 12...
... Pad portion, 13... Pad metal fitting, 14... Stud, 15... Relief groove.

Claims (1)

[Claims for Utility Model Registration] A pair of left and right link bodies 2, 2 are integrally connected by a center guide 3 provided protruding from the upper surface side between them to form an integral link body, and this integral link Connecting pins 4, 4 are provided at the front and rear edges of the body so as to pass through the body in the width direction, and a large number of identical link bodies are joined endlessly in the longitudinal direction, and the integral link bodies are joined to each other. In the crawler plate 1 in which the intermediate portions of adjacent connecting pins 4 are rotatably connected to each other by a center connector 5 and the protruding end portions are rotatably connected to each other by end connectors 7, 7 to form a crawler track for running a vehicle, each of the above-mentioned An integral pad 11 having a shape that almost commonly covers the ground plane of the integral link body is attached to each of the integral link bodies, and a pad portion 12 of the pad 11 is polymerized and fixed to the bottom surface of a pad metal fitting 13 forming a base plate. Each pad 11 has a large diameter head in contact with the bottom surface of the pad metal fitting 13, and studs 14, 14 made of bolts are inserted through holes provided at both ends of the pad metal fitting 13 in the width direction. Each stud 14, 14 is provided in a stud hole 10a, 10 provided on both sides of each corresponding integral link body.
protrudes from a to the upper surface side of the link body and is fixed by screwing a nut 14a to the protruding portion, and is located at a position in contact with both side surfaces of each of the pads 11 on both sides of the bottom surface of each integral link body. Grousers 1b and 1c, which are frame-shaped protrusions into which the outer peripheral surface of each pad 11 fits, are integrally formed to protrude, and each pad 11 has the center connector 5.
A track board characterized in that relief grooves 15 are provided on both sides of the central part of the upper surface corresponding to the grooves 15, which are cut out and inclined outwardly and downwardly.