CN2345521Y

CN2345521Y - Rotating-column type tower crane rotary worm-gear speed reducer clutch

Info

Publication number: CN2345521Y
Application number: CN 98229182
Authority: CN
Inventors: 李友权
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-24
Filing date: 1998-07-24
Publication date: 1999-10-27
Anticipated expiration: 2008-07-24

Abstract

The utility model relates to a rotating-column type clutch for the rotary worm-gear speed reducer a tower crane. The utility model is characterized in that a flange disc 3 and a flange disc 4 are provided with pin holes 7; a slide disc 5 is sheathed on the output shaft of the worm-gear speed reducer beneath the flange disc 4; the slide disc 5 is connected with an operating rod 12 and counter weight 9 via a slide arm 11; the counter weight 9, the operating rod 12 and the slide arm 11 are installed on the casing of the worm-gear speed reducer via a rotary shaft 10. The utility model has the advantages of simple structure, low cost, and convenient operation, realizing the free rotation with wind of a start arm via on-off action, and consequently preventing serious accidents from happening caused by that the tower crane is blew down by strong wind.

Description

Rotary-column type tower machine revolution worm reduction gear power-transfer clutch

The utility model relates to a kind of power-transfer clutch, especially rotary-column type tower machine revolution worm reduction gear power-transfer clutch.

The crane arm of rotary-column type tower crane horizontally rotates motion, realizes by the revolution worm reduction gear, because its economical and practical cost is low.But worm reduction gear is made up of worm gear and worm screw, and it has self-locking action, and after the shutdown, crane arm can not freely rotate with the wind, and when meeting more than eight grades strong wind, it is excessive that the wind of crane arm carries pressure, will cause body of the tower to fall the grave accident of tower.The existing tower machine in the camp site of China splits off the accident of falling the tower and takes place.

The purpose of this utility model provides a kind of rotary-column type tower machine revolution worm reduction gear power-transfer clutch; by the purpose made power-transfer clutch is installed on the hoisting crane; solve rotary-column type tower machine after shutdown, the problem that crane arm can freely rotate with the wind prevents the grave accident generation that strong wind blows down the tower machine.

Concrete scheme of the present utility model is: comprise miniature gears, pinion shaft, pinion shaft flange, output shaft flange, worm reduction gear, it is characterized in that: on flange and flange, have Xiao Zikong, on the worm reduction gear output shaft below the flange, be set with slider disc, Xiao is installed on the slider disc; Slider disc is connected with counterweight with joystick through travelling arm, and counterweight, joystick, travelling arm are installed on the worm reduction gear casing by turning cylinder.

The employing such scheme is simple in structure, and cost is low, and is easy and simple to handle, has clutch function, can realize freely rotating with the wind of actuating arm, prevents the grave accident generation that strong wind blows down the tower machine, and it has bigger economic benefit and social benefit.

Below in conjunction with drawings and Examples the utility model is further specified.

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

Fig. 2 is disengaged position figure of the present utility model.

From above-mentioned accompanying drawing as can be known: the utility model mainly is made up of miniature gears 1, pinion shaft 2, flange 3, flange 4, slider disc 5, axle Xiao 6, Xiao Zi hole 7, worm reduction gear 8, counterweight 9, turning cylinder 10, travelling arm 11, joystick 12, annexation and architectural feature between them are: flange 3 is installed on the pinion shaft 2, flange 4 is installed on the output shaft of worm reduction gear 8, on flange 3 and flange 4, have Xiao Zi hole 7, on the worm reduction gear output shaft below the flange 4, be set with slider disc 5, Xiao 6 is installed on the slider disc 5; Slider disc 5 is connected with counterweight 9 with joystick 12 through travelling arm 11, and counterweight 9, joystick 12, travelling arm 11 are installed on worm reduction gear 8 casings by turning cylinder 10.Xiao Zi hole 7 in the

utility model flange

3 and 4 is corresponding with axle Xiao 6 in the travelling arm 11.

The utility model is by promoting joystick 12, travelling arm 11 is rotated, thereby the slider disc 5 that drives power-transfer clutch sliding up and down, and reaches the function of clutch.When being joystick 12 propellings, slider disc 5 is to up, and axle Xiao 6 be connected with the flange 3 of pinion shaft, and worm reduction gear drives crane arm and horizontally rotates motion.When joystick 12 retracts, the 5 downward landings of clutch slip dish, axle Xiao 6 breaks away from the flange 3 of pinion shaft, worm reduction gear idle running, crane arm can freely rotate with the wind.

Claims

1. a rotary-column type tower machine turns round the worm reduction gear power-transfer clutch, comprise miniature gears (1), pinion shaft (2), pinion shaft flange (3), output shaft flange (4), worm reduction gear (8), it is characterized in that: on flange (3) and flange (4), have Xiao Zikong (7), on the worm reduction gear output shaft of flange (4) below, be set with slider disc (5), Xiao (6) is installed on the slider disc (5); Slider disc (5) is connected with counterweight (9) with joystick (12) through travelling arm (11), and counterweight (9), joystick (12), travelling arm (11) are installed on worm reduction gear (8) casing by turning cylinder (10).