CN201343290Y

CN201343290Y - Extra-heavy duty type chain tensioner

Info

Publication number: CN201343290Y
Application number: CNU2008202301446U
Authority: CN
Inventors: 吴顺胜; 刘冰涟
Original assignee: HUANGSHI HUAQIANG NUMERICAL CONTROL MACHINE TOOL CO Ltd
Current assignee: HUANGSHI HUAQIANG NUMERICAL CONTROL MACHINE TOOL CO Ltd
Priority date: 2008-12-11
Filing date: 2008-12-11
Publication date: 2009-11-11
Anticipated expiration: 2018-12-11

Abstract

The utility model relates to an extra-heavy duty type chain tensioner, which comprises a base and a driven chain wheel. Two sliding carriages are respectively arranged on the front side and the rear side of a base, and can horizontally move along the base; a shaft of the driven chain wheel is fixed on the two sliding carriages; the sliding carriages are provided with T-shaped grooves; the head parts of adjusting bolts are arranged in the T-shaped groove; and a butterfly spring, pressing sleeves and screw nuts are arranged in the tail parts of the adjusting bolts. The utility model is suitable for tensioning extra-heavy duty type chains with the chain thrust of over 30 T, and has strong bearing capacity and convenient operation.

Description

The extra-heavy duty type chain stretching device

(1) technical field:

The utility model relates to the forge press machines in the mechanical engineering, specifically is the extra-heavy duty type chain stretching device that uses in the joint close Prewelding machine large-scale steel pipe conveying mechanism.

(2) background technology:

The chain tension mode mainly contains following three kinds at present, and the one, use the tightening device tensioning, around a drive sprocket and a driven sprocket, tension force imposes on the tensioning mode of chain by an idler roller as chain ring; The 2nd, use tune-up center apart from the method tensioning; The 3rd, with shortening the tensioning of chain length method; Though above-mentioned three kinds of modes all can reach certain tension effects, mainly be fit to the tensioning of the following light-duty series chain of 5T, then exist bearing capacity little for the extra-heavy duty type chain, problems such as operation inconvenience.

(3) summary of the invention:

The purpose of this utility model just provides a kind of extra-heavy duty type chain stretching device of chain thrust more than 30T that can be used for.

Extra-heavy duty type chain stretching device of the present utility model, comprise base and driven sprocket, side respectively is equipped with a slide before and after base, slide can move along the base horizontal direction, the axle of driven sprocket is fixed on two slides, have T slot on described slide, one regulates bolt head places in the T slot, and afterbody is equipped with butterfly spring, gland, nut successively.

Between described base and dish spring, be equipped with one and be used to support the stay bearing plate of regulating bolt.

Principle of work of the present utility model is: by chain gear, the pipe of opening is pushed into the joint close Prewelding machine carries out prewelding, by regulating the nut of bolt tail, compress or release bolt on the dish spring, make head be fixed in bolt on the slide, the control slide moves as horizontal direction along base, thereby adjusts the width between centers between flower wheel and the driving wheel and reach the purpose of tension chain.

The utility model load-carrying capacity is big, and certain buffer shock-absorbing performance is arranged, the scantling of structure compactness, and tensioning is easy to adjust.

(4) description of drawings:

Fig. 1 is the utility model master apparent direction structural representation;

Fig. 2 be after removing chain among Fig. 1 A-A to the sectional structure scheme drawing;

Fig. 3 is that Fig. 2 overlooks the direction structure scheme drawing;

Fig. 4 be among Fig. 3 E-E to the sectional structure scheme drawing.

Among the figure: the 1-base, the 2-slide, the 3-flower wheel, 4-T shape groove, 5-regulates bolt, 6-butterfly spring, 7-gland, 8-jam nut, 9-stay bearing plate.

(5) specific embodiment:

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model comprises box bed 1, on the side slide 2 is housed respectively before and after base, and slide can move along the base horizontal direction, and the axle of flower wheel 3 is fixed on two slides.Have T slot 4 on the slide, the head of regulating bolt 5 is fixed in the T slot, and afterbody is equipped with butterfly spring 6 successively, gland 7, jam nut 8.

Be equipped with one and be used to support the stay bearing plate 9 of regulating bolt between described base and dish spring, its effect mainly is to make adjusting bolt axis remain horizontality, with the reliability of guaranteeing that tensioning is regulated.

Claims

1. extra-heavy duty type chain stretching device, comprise base and driven sprocket, it is characterized in that: side respectively is equipped with a slide before and after base, slide can move along the base horizontal direction, the axle of driven sprocket is fixed on two slides, have T slot on described slide, one regulates bolt head places in the T slot, and afterbody is equipped with butterfly spring, gland, nut successively.

2. extra-heavy duty type chain stretching device according to claim 1 is characterized in that: be equipped with one and be used to support the stay bearing plate of regulating bolt between described base and dish spring.