CN2883300Y

CN2883300Y - Dropping dust-proof circular chain hand hoist

Info

Publication number: CN2883300Y
Application number: CN 200620102771
Authority: CN
Inventors: 俞忠春
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-17
Filing date: 2006-04-17
Publication date: 2007-03-28
Anticipated expiration: 2016-04-17

Abstract

The utility model relates to a disengaging dust-proof ring chain manual block, comprising a handle operating member, a hand wheel, an adjusting block, a clutch member, a ratchet hood, a frame, a hook, a windlass, a gearbox, a brake spring and a long-shaft gear, one end of the long-shaft gear is connected with a gearbox, the gearbox is connected with the windlass, and the clutch and the hand wheel are arranged in order at the other end, the brake spring is arranged between the long-shaft gear and the windlass, and one end of the ratchet housing is fixedly connected with the frame, and the other end is connected with the handle operating member to form a safe and a reliable dust-proof member, an integrated member which can do axial movement is formed by the long-shaft gear, the brake spring and the hand wheel. The utility model has the advantages of good dust-proof effect, flexible and convenient operation, and safety and reliability.

Description

Releasing Type Dustproof Ratchet Hoist

Technical field

Lever Blocks is widely used in occasions such as factory, harbour, warehouse, transportation, electric power conveying with hoisting heavy or traction object as a kind of small-sized elevator machinery, belongs to hand-held design hand crane tool.

Background technology

The shortcoming that common in the market disengagement type Lever Blocks exists: the one, do not have effectively to prevent dust, when throwing off owing to brake equipment, the ratchet case can not be fixed on the frame, causes that sand mud, dust enter on the interior friction disc of ratchet case, can not normally use; The 2nd, inconvenient operation when braking is thrown off, needs ratchet casing, arrangement of clutch, key part to operate simultaneously, so inconvenient operation; The 3rd, complex structure, the mounting or dismounting difficulty, maintenance is inconvenient.

The utility model content

At above-mentioned ubiquitous shortcoming, the purpose of this utility model is to provide a kind of operation of both being convenient to, again can be effectively dustproof, and mounting or dismounting, Releasing Type Dustproof Ratchet Hoist easy to maintenance.

For achieving the above object, the technical scheme that the utility model is taked is: a kind of Releasing Type Dustproof Ratchet Hoist, comprise frame, ratchet case, rack-mounted suspension hook, major axis gear, major axis gear one end and change speed gear box engagement, change speed gear box and hoisting mechanism are connected, the clutch spring is installed between major axis gear and hoisting mechanism, the major axis gear other end is equipped with arrangement of clutch, handle operation mechanism successively, it is characterized in that: ratchet case one end is captiveed joint with frame, and the other end and handle operation mechanism flexibly connect.

The utility model further is set to: also be provided with handwheel at arrangement of clutch one end, handwheel be installed on the major axis gear and with major axis gear, clutch spring common form one can axially movable integral body, between handwheel and arrangement of clutch, also be provided with the adjustment piece.

The utility model principle of work is: Lever Blocks is when work, and the bar handle operating mechanism clockwise rotates or rotates counterclockwise, and drives the major axis gear by arrangement of clutch and drives rising or the decline that hoisting mechanism is made weight through change speed gear box.When zero load needs the quick travel hoisting chain, can be with handwheel along adjusting piece left-hand revolution 90 degree, the major axis gear axially outwards moves with handwheel, and clutch this moment spring compresses, the left end of major axis gear and the engagement of change speed gear box are thrown off, and drag hoisting chain and can make quick travel.

Advantage of the present utility model is as follows: one, good dustproof effect: in all case use, sand mud, dust all can not enter in the ratchet case, guarantee the function of arrangement of clutch; Two, flexible operation is easy: particularly need quick travel hoisting chain when zero load, only need to rotate handwheel, can realize the quick travel of hoisting chain; Three, simple in structure being convenient to processed, and reduced productive costs; Four, mounting or dismounting, easy to maintenance; Five, safe reliability height, each part of arrangement of clutch compresses mutually during work, and friction force increases, and has guaranteed user's safety.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Description of drawings

Structural representation when Fig. 1 is the utility model mode of operation.

Structural representation when Fig. 2 is the utility model disengaged condition.

The specific embodiment

As shown in Figure 1, the utility model comprises following parts: handle operation mechanism 1, handwheel 2, adjust piece 3, arrangement of clutch 4, ratchet case 5, frame 6, suspension hook 7, hoisting mechanism 8, change speed gear box 9, clutch spring 10, major axis gear 11, the left end of major axis gear 11 links to each other with change speed gear box 9, right-hand member is equipped with arrangement of clutch 4 and handwheel 2 successively, in major axis gear 11 and the hoisting mechanism 8 clutch spring 10 is housed, arrangement of clutch 4 is connected with adjustment piece 3, ratchet case 5 left ends are connected with frame 6, its right-hand member is connected with handle operation mechanism 1, form a safe and reliable dust-proof mechanism, major axis gear 11 can axially movable whole mechanism with clutch spring 10 and handwheel 2 common compositions one.

Principle of work of the present utility model is: bar handle operating mechanism 1 clockwise rotates or rotates counterclockwise, driving major axis gear 11 by arrangement of clutch 4 clockwise rotates or rotates counterclockwise, and by major axis gear 11 and change speed gear box 9 gears mesh, to hoisting mechanism 8, the rotation of hoisting mechanism 8 is with the rising or the decline of weight with transmission of power.No matter weight is in lifting or decline process, as long as handle operation mechanism 1 stops operating, cucurbit promptly can be implemented braking.Because weight has a kind of tenesmus trend, force major axis gear 11 rotation by hoisting mechanism 8, change speed gear box 9, drive arrangement of clutch 4, arrangement of clutch 4 was moved in moment, thereby reach braking effect.As shown in Figure 2, if need when zero load, to drag fast hoisting chain, then only need piece 3 left-hand revolutions 90 degree are adjusted on handwheel 2 edges, major axis gear 11 is outwards moved with handwheel 2, the left end of major axis gear 11 and the engagement of change speed gear box 9 at this moment breaks away from, and hoisting chain can move by fast speed.

Claims

1, a kind of Releasing Type Dustproof Ratchet Hoist, comprise frame (6), ratchet case (5), be installed in the suspension hook (7) on the frame (6), major axis gear (11), major axis gear (11) one ends and change speed gear box (9) engagement, change speed gear box (9) is connected with hoisting mechanism (8), between major axis gear (11) and hoisting mechanism (8), clutch spring (10) is installed, major axis gear (11) other end is equipped with arrangement of clutch (4) successively, handle operation mechanism (1), it is characterized in that: ratchet case (5) one ends are captiveed joint with frame (6), and the other end and handle operation mechanism (1) flexibly connect.

2, Releasing Type Dustproof Ratchet Hoist according to claim 1, it is characterized in that: also be provided with handwheel (2) at arrangement of clutch (4) one ends, handwheel (2) is installed on the major axis gear (11) and forms one jointly with major axis gear (11), clutch spring (10) can axially movable integral body.

3, Releasing Type Dustproof Ratchet Hoist according to claim 1 and 2 is characterized in that: also be provided with between handwheel (2) and arrangement of clutch (4) and adjust piece (3).