CN201055931Y

CN201055931Y - Crank connecting rod type electrically-operated flying shears machine

Info

Publication number: CN201055931Y
Application number: CNU2007201520850U
Authority: CN
Inventors: 周福尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-26
Filing date: 2007-06-26
Publication date: 2008-05-07
Anticipated expiration: 2017-06-26

Abstract

The utility model discloses an electro-flying shear with crank connecting rod type, which comprises an upper crank shaft, a lower crank shaft, a large connecting rod, a small connecting rod, a driving device and an actuating device, the upper and lower cutter arms are separately hinged and fixed on the upper and lower crank shafts, the upper and lower cutter arms are separately and fixedly connected with the large connecting rod, the large connecting rod is hinged with the small connecting rod, the small connecting rod is hinged on a fixed plate, and the crank parts of the upper and lower crank shafts are elliptical. Because the crank part of the upper and lower crank shafts are elliptical and the large and small connecting rods are manufactured by monolayer steel plate, so as to greatly reduce the weight of the whole flying shear, decrease the inertia, thereby instantly reaching the preset height, satisfying the needs on cutting the steel products with large fractured surfaces such as round steel of phi130 and phi170, and angular steel, in addition, two direct current generators and a differential speed reducer replace the alternating current generator with high power, low inertia and frequent activation, so as to remarkably reduce the flying shear cost in the premise of meeting the driving force requirements.

Description

Crank-linkage type electrically operated flying shears machine

Technical field

The utility model relates to a kind of crank-linkage type flying shearing machine of shearing big section steel, belongs to the rolling machinery technical field.

Background technology

Flying shearing machine are in the rolling process, to a kind of machinery that steel in the motion process carry out on-line shearing that is in of roll forming.Along with the modernization of steel rolling technology, the steel section that shear is increasing; The cross section of the big small rod of crank-linkage type electrically operated flying shears machine commonly used is box-shaped or door font now, the crank of crank axle is rectangle and is added with counterweight, these structures cause flying shearing machine inertia big, starting, difficult in acceleration, and flying shearing machine are start-stop shearing work system, inertia is excessive to cause traditional flying shearing machine can't satisfy the big section steel of shearing particularly φ 130, φ 170 garden steel, and the instructions for use of shearing angle steel.

The utility model content

At the problems referred to above, the purpose of this utility model is to provide a kind of simple in structure, in light weight, bearing capacity is big, inertia is little crank-linkage type electrically operated flying shears machine.

For achieving the above object, technical solution of the present utility model is:

A kind of crank-linkage type electrically operated flying shears machine, comprise crank axle, lower crank axle, big connecting rod, small rod, drive unit and transmission device, upper and lower knife rest difference hinged securement is on upper and lower crank axle, upper and lower knife rest is fixedly connected with big connecting rod respectively, big connecting rod is hinged with small rod, small rod is articulated on the fixed head, and the crank portion of described upper and lower crank axle is ellipse.

Further, described big connecting rod is made by the individual layer steel plate.

Further, described small rod is made by the individual layer steel plate.

Further, described drive unit comprises two Fraquent start dc motors, and this two dc motor connects described lower crank axle by the planet differential reductor, respectively adorns a synchromesh gear on the described upper and lower crank axle, and this two synchromesh gear is meshing with each other.

After adopting said structure, because the crank portion of upper and lower crank axle is ellipse and big small rod is made by the individual layer steel plate, therefore the weight of whole flying shearing machine alleviates greatly, inertia reduces, can reach at a high speed predetermined moment, satisfy and to subtract the needs of cutting big section steel, angle steel, and replace high-power low inertia Fraquent start alternating current generator, the cost of flying shearing machine is reduced greatly with two direct current generators and a planet differential reductor.

Description of drawings

Fig. 1 is the utility model structure chart;

Fig. 2 is the crank structure schematic diagram;

Fig. 3 is that the K of Fig. 2 is to view;

Fig. 4 is the big connecting rod structure chart;

Fig. 5 is that the A of Fig. 4 is to view;

Fig. 6 is the small rod structure chart;

Fig. 7 is that the A-A of Fig. 6 is to view;

Fig. 8 is drive unit, transmission device schematic diagram.

The specific embodiment

Shown in Fig. 1,8, the utility model crank-linkage type electrically operated flying shears machine comprises crank axle 1, lower crank axle 2, big connecting rod 3, small rod 4 and drive unit 5;

The structure of last crank axle 1, lower crank axle 2 is identical, and above crank axle 1 is an example, and its crank portion is oval and not establishing weighs, as Fig. 2,3;

Big connecting rod 3, small rod 4 are made by the individual layer steel plate respectively, shown in Fig. 4,5,6,7;

Drive unit 5 comprises two high-power low inertia Fraquent

start dc motors

51,52,

dc motor

51,52 drives lower crank axle 2 by planet differential reductor 53, respectively adorn a

synchromesh gear

11,21 on the upper and lower crank axle, this two synchromesh gear is meshing with each other and keeps upper and lower crankshaft rotating synchronous; Two

dc motors

51,52 reach deceleration, synchronous behind planet differential reductor 53;

Upper and

lower knife rest

7,8 difference hinged securement are on upper and

lower crank axle

1,2, upper and

lower knife rest

7,8 is fixedly connected with big connecting rod 3 respectively, big connecting rod 3 is hinged with small rod 4, small rod 4 is articulated on the fixed head, under the effect of big connecting rod 3, small rod 4, make the cutting edge on the knife rest when shearing, one section parallel motion be arranged, be more suitable for shearing angle steel; The crank of upper and lower crank axle is oval, and the ellipse crank is used for the cantilever crank axle, and the inertia of crank axle is reduced greatly.

Claims

1. crank-linkage type electrically operated flying shears machine, comprise crank axle, lower crank axle, big connecting rod, small rod, drive unit and transmission device, upper and lower knife rest difference hinged securement is on upper and lower crank axle, upper and lower knife rest is fixedly connected with big connecting rod respectively, big connecting rod is hinged with small rod, small rod is articulated on the fixed head, it is characterized in that the crank portion of described upper and lower crank axle is ellipse.

2. crank-linkage type electrically operated flying shears machine as claimed in claim 1 is characterized in that described big connecting rod is made by the individual layer steel plate.

3. crank-linkage type electrically operated flying shears machine as claimed in claim 1 is characterized in that described small rod is made by the individual layer steel plate.

4. crank-linkage type electrically operated flying shears machine as claimed in claim 1, it is characterized in that, described drive unit comprises two Fraquent start dc motors, this two dc motor connects described lower crank axle by the planet differential reductor, respectively adorn a synchromesh gear on the described upper and lower crank axle, this two synchromesh gear is meshing with each other.