CN2131841Y

CN2131841Y - Crank-rocker swing mechanism for wood grabbing bucket

Info

Publication number: CN2131841Y
Application number: CN 92226205
Authority: CN
Inventors: 黄国桢; 邓建明; 王克忠; 孙北波
Original assignee: NANCHANG MECHANICAL REPAIR WOR
Current assignee: NANCHANG MECHANICAL REPAIR WOR
Priority date: 1992-06-26
Filing date: 1992-06-26
Publication date: 1993-05-05
Anticipated expiration: 2002-06-26

Abstract

The utility model discloses a swing mechanism matched with an electric swing log grab, comprising an electric motor, a retarding mechanism, a swing mechanism, and a swing axis. The retarding mechanism is composed of a small bead apex wheel, a bead apex, a big bead apex wheel, a worm wheel, and a worm rod. The swing mechanism is composed of a crank, a connection rod, and a rocking rod. Every time that the crank swings 180 DEG, the rocking rod wags 90 DEG, and the swing axis is driven to swing 90 DEG. The utility model has the advantages of compact structure, and convenient operation, a gear reducer is omitted, the volume is decreased by 40%, the mechanism make the swing of the log grab on the horizontal direction not greater than 90 DEG, the accident of stretching to break power lines by swinging the grab can be effectively prevented from happening, and the turning of the utility model is definite.

Description

Crank-rocker swing mechanism for wood grabbing bucket

The utility model relates to a kind of log grab bucket rotating mechanism, especially with electronic rotation log grab bucket (patent No. is CN91206414) matching used rotating mechanism.

Original log grab bucket rotating mechanism slows down by gear reducer, and it is big to exist volume, and equal in addition greater than 360 ° of scopes in rotate, twine cable easily and cause the defective of pulling apart the power lead accident.

The purpose of this utility model is to overcome the existing defective of existing log grab bucket rotating mechanism, and a kind of compact conformation is provided, and volume is little, makes the log grab bucket anglec of rotation in the horizontal direction be not more than 90 ° rotating mechanism.

Task of the present utility model realizes in the following manner: this crank-rocker style log grab bucket rotating mechanism is made up of motor, speed reduction gearing, rotating mechanism and S. A..Speed reduction gearing is made up of little bead apex wheel, bead apex, big triangular belt pulley, worm and worm wheel, rotating mechanism is made up of crank, connecting rod and rocking bar, motor is taken turns with the little bead apex in the speed reduction gearing and is connected, crank connecting link in worm gear and the rotating mechanism, rocking bar is connected with S. A., the every Rotate 180 of crank °, 90 ° of rocking bar swings, thus the driven rotary axle rotates 90 °.

The utility model is compared with the rotating mechanism of original grab bucket and is had the following advantages: 1, this rotating mechanism compact conformation, saved a gear reducer, and volume has reduced 40%, makes the total arrangement of electronic rotation log grab bucket more reasonable; 2, this mechanism make log grab bucket in the horizontal direction the anglec of rotation is not more than 90 °, can prevent to twine cable owing to the log grab bucket anglec of rotation is equal to or greater than 360 °, thus the accident generation that power lead is broken in the rotation that prevents from effectively to grab bucket; 3, this mechanism turns to clearly, and is easy to operate, safe and reliable.

Concrete structure of the present utility model is provided by drawings and Examples.

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

Fig. 2 is a transmission principle scheme drawing of the present utility model;

Fig. 3 is the operating principle scheme drawing of quadric linkage.

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

Embodiment:

With reference to Fig. 1, Fig. 2, Fig. 3, this crank-rocker style log grab bucket rotating mechanism comprises motor 1, speed reduction gearing, rotating mechanism and S. A. 10.Speed reduction gearing is made up of little bead apex wheel 2, bead apex 3, big triangular belt pulley 4, worm screw 5 and worm gear 6; Rotating mechanism is made up of crank 7, connecting rod 8 and rocking bar 9, and motor 1 is connected with little bead apex wheel 2, and big triangular belt pulley 4 is connected with worm screw 5, and worm gear 6 is connected with crank 7, and rocking bar 9 is connected with S. A. 10.Crank 7 every Rotate 180s °, 90 ° of rocking bar 9 swings, and driven rotary axle 10 rotates 90 °.

The working process of this crank-rocker style log grab bucket rotating mechanism is as follows: starter motor 1(is suitable, counter-rotating all can), power is passed to crank 7 after speed reduction gearing slows down, make crank 7 low speed rotation, crank 7 every Rotate 180s °, drive 90 ° of rocking bar 9 swings by connecting rod 8, thereby make S. A. 10 also rotate 90 °, promptly make log that log grab bucket and grab bucket grasp half-twist in the horizontal direction.After the operator was closed down motor 1, S. A. 10 stopped operating, because the self-locking action of worm gear 5 and worm gear 6, S. A. 10 can be fixed on the desired position.The operator also can make S. A. 10 forward any desired position to and fix by the method for operation of crawl motor 1.

Claims

1, a kind of crank-rocker style log grab bucket rotating mechanism, comprise motor 1, speed reduction gearing, rotating mechanism and S. A. 10, it is characterized in that: speed reduction gearing is made up of little bead apex wheel 2, bead apex 3, big triangular belt pulley 4, worm screw 5 and worm gear 6, rotating mechanism is made up of crank 7, connecting rod 8 and rocking bar 9, motor 1 is connected with little bead apex wheel 2, worm gear 6 and crank 7 every Rotate 180s °, 90 ° of rocking bar 9 swings, thereby the crank 7 that driven rotary axle 10 also rotates in 90 ° the rotating mechanism connects, and rocking bar 9 is connected with S. A. 10.