CN203497052U - Track chain - Google Patents

Abstract

The utility model provides a track chain. The track chain comprises track plates, track pins and connecting screws, wherein adjacent track plates are connected with each other through a track pin; annular grooves are respectively formed in the two ends of each track pin; a threaded hole is formed in the position, corresponding to the annular groove of the track pin, on the track plate; a connecting screw is fixed in each threaded hole; the extending end of the connecting screw is clamped in the annular groove in each track pin; track pin threaded holes are axially formed in the two ends of each track pin. The track chain disclosed by the utility model is simple in structure, low in cost, and easy to disassemble and assemble; the track pins can be rotated freely in a using process and are not easy to deform; the track pins can be disassembled and assembled by utilizing a tool after being stressed and deformed by long-term use, and the track chain cannot be damaged.

Description

A kind of caterpillar chain

Technical field

The utility model relates to a kind of crawler belt, is specifically related to development machine crawler belt.

Background technology

Operation when development machine creeper undercarriage is being undertaken transfer, the excavation operation of development machine and the work of tractor loader.Connection between caterpillar block is all to adopt track pin to connect, and existing track pin is located by spring pin.In crawler belt working process, by the connected front and back caterpillar block of track pin, can on track pin, act on respectively sizable tractive force and friction force, time is once causing original straight pin to become crankshaft for a long time, and the spring pin major part that track pin is positioned is yielding, makes track pin dismounting become abnormal and bother.

Summary of the invention

It is a kind of simple in structure, with low cost that goal of the invention of the present utility model is to provide, and is easy to dismounting, and track pin is used the rear simple caterpillar chain of dismounting of distortion for a long time.

The technical solution of the utility model is:

A caterpillar chain, comprises caterpillar block, track pin and connecting screw, and adjacent caterpillar block connects by track pin, and track pin two ends arrange respectively annular groove; On caterpillar block, be provided with tapped bore with the annular groove corresponding position of track pin, be fixed with connecting screw in tapped bore, the external part of connecting screw is stuck in the annular groove on track pin; Described track pin two ends are provided with track pin tapped bore vertically.

As preferably, described track pin is cylinder.

As preferably, the annular groove at described track pin two ends is symmetrical.

The beneficial effects of the utility model: (1) is simple in structure, with low cost, is easy to dismounting; (2) track pin is in use free to rotate, not yielding; (3) track pin two ends are provided with track pin tapped bore vertically, at track pin, use for a long time after stress deformation, utilize special tool dismounting simple.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is cross-sectional view of the present utility model.

Fig. 3 is track pin structural representation of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is described.

As shown in Figure 1, Figure 2 and Figure 3, a kind of caterpillar chain, comprises caterpillar block 1, track pin 2 and connecting screw 3, and adjacent caterpillar block 1 connects by track pin 2, and track pin 2 two ends arrange respectively annular groove; On caterpillar block 1, be provided with tapped bore with the annular groove corresponding position of track pin 2, be fixed with connecting screw 3 in tapped bore, the external part of connecting screw 3 is stuck in the annular groove on track pin 2; Described track pin 2 two ends are provided with track pin tapped bore vertically; Described track pin 2 is cylinder; The annular groove at described track pin 2 two ends is symmetrical.

Caterpillar chain is comprised of caterpillar block 1, track pin 2 and connecting screw 3, track pin 2 couples together two adjacent caterpillar blocks 1 by the reserved pin-and-hole of caterpillar block 1, connecting screw 3 is arranged in the tapped bore of caterpillar block 1, its sponson is stuck on the annular groove of track pin 2, and caterpillar block 1 and track pin 2 form track link.

In caterpillar chain working process, the connected front and back caterpillar block 1 of track pin 2 can act on respectively sizable tractive force and friction force on track pin 2, time is once causing track pin 2 to become crankshaft for a long time, track pin 2 is had to the cylinder of annular groove for two ends, make track pin 2 in use free to rotate, can either prevent that like this track pin 2 long-time wearing and tearing one places from causing loosening, also can prevent that track pin 2 is subject to for a long time equidirectional application force and makes it become crankshaft, and connecting screw is stuck on annular groove, after track pin becomes crankshaft, still can dismantle smoothly, time saving and energy saving.

, when needs are dismantled caterpillar chain, common track pin dismounting is inconvenience very, wastes time and energy, and when track pin is long-term, uses and cause after distortion, loads and unloads difficultly, and conventional approach is difficult to handling, very easily causes the damage of other parts of caterpillar chain, brings unnecessary loss; And at track pin 2 two ends, be provided with vertically track pin tapped bore, when needs are dismantled caterpillar chain, can use special instrument fixing by track pin tapped bore and track pin 2, facilitate the dismounting of caterpillar chain, greatly reduce artificial unloading's time and work capacity, and energy actv. reduces the damage of caterpillar chain, reduce the working service cost of caterpillar chain.

The utility model is used for development machine crawler belt, also can use on other crawler equipments, and the structure of its caterpillar block 1 can change as required, and its caterpillar block 1 and track pin 2 can change its specification according to the size of equipment.

It should be pointed out that for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.In the present embodiment not clear and definite each component part all available prior art realized.

Claims (3)

1. a caterpillar chain, is characterized in that: comprise caterpillar block (1), track pin (2) and connecting screw (3), adjacent caterpillar block (1) connects by track pin (2), and track pin (2) two ends arrange respectively annular groove; Caterpillar block (1) annular groove corresponding position upper and track pin (2) is provided with tapped bore, is fixed with connecting screw (3) in tapped bore, and the external part of connecting screw (3) is stuck in the annular groove on track pin (2);

Described track pin (2) two ends are provided with track pin tapped bore vertically.

2. a kind of caterpillar chain according to claim 1, is characterized in that: described track pin (2) is cylinder.

3. a kind of caterpillar chain according to claim 1, is characterized in that: the annular groove at described track pin (2) two ends is symmetrical.

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