CN2389876Y

CN2389876Y - Hand forklift

Info

Publication number: CN2389876Y
Application number: CN 99238323
Authority: CN
Inventors: 沈宝龙; 姚映林; 李真健; 余跃军
Original assignee: METALLURGICAL EQUIPMENT CO YEGANG GROUP
Current assignee: METALLURGICAL EQUIPMENT CO YEGANG GROUP
Priority date: 1999-08-17
Filing date: 1999-08-17
Publication date: 2000-08-02
Anticipated expiration: 2009-08-17

Abstract

The utility model relates to a hand forklift which is used for transporting, loading, and unloading cargoes. The utility model is the improvement of the existing hand forklift, and especially, the inner part of a hand-operated power box is additionally provided with an extreme lower position stop device, namely, a ratchet pawl is additionally arranged to match a ratchet wheel groove which is arranged at the outer edge of a clutch nut which is arranged in a screw thread fast engaging and disengaging self-locking device. The ratchet pawl is controlled by a swinging link. The other end of the swinging link is provided with a pulley wheel which is connected with a steel cable in a rolling way, and the swinging link is provided with a tension spring which is used for maintaining the pulley wheel and the steel cable to connect in a rolling way. When a pulley falls down to the extreme lower position, a handle can not be shaken continuously, and therefore, the utility model effectively overcomes the defects that a winding drum is wound inversely by the steel cable, floss can be generated, etc. The utility model can be widely used for loading, unloading, and transporting the cargoes in occasions, such as warehouses, shops, workshops, etc.

Description

Hand fork lifter

The utility model relates to lifting transport establishment, is a kind of hand fork lifter.

At present, domestic manpower fork truck commonly used is based on hand operated transport.Because homemade sealing member quality does not pass a test, easily aging, add that maintaining is bad, often cause the hydraulic pressure leakage of oil, polluted the goods and the environment of carrying, and relatively heavier, the someone has designed a kind of hand gear fork truck recently, it adopts chain gear, reel promotes tackle arrangement, overcome the problem of hydraulic pressure leakage of oil, but it exists again the transmission noise big, momentary velocity is inhomogeneous, be not suitable for rapid reverse drive, particularly when coaster drops to lowest order, continue to shake handle, easily make the anti-spooling tube of steel rope, cause sleave.

The purpose of this utility model is that the problem at the easy anti-spooling tube of above-mentioned steel rope provides a kind of hand fork lifter with lowest order stop motion mechanism, and its stable drive, noise are little, compact conformation, driving efficiency height.

Concrete scheme of the present utility model is that existing hand gear fork truck is improved, particularly set up the lowest order stop motion mechanism in the dynamo power case therein, the outer ratchet slot of promptly setting up the clutch nut in a ratchet and the quick clutch self-locking device of screw thread cooperates, this ratchet is subjected to the clutch of rocking bar control and ratchet slot, and the rocking bar other end is equipped with an extension spring that keeps pulley and steel rope to roll and connect.

For making the utility model stable drive, noise little, the driving device in the utility model dynamo power case is to have adopted the above gear transmission of two-stage.

The utility model has thoroughly overcome the easy anti-spooling tube of steel rope owing to adopted the lowest order stop motion mechanism, cause the shortcoming of sleave, and gear transmission is steady, noise is little, compact conformation, driving efficiency height, reliable operation, long service life.

The utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is a front view of the present utility model;

Fig. 2 is a left side view of the present utility model;

Fig. 3 is the main cutaway view of the hand transmission gearbox of the utility model;

Fig. 4 is the birds-eye view (semi-sictional view) of Fig. 3;

Fig. 5 is the A-A cutaway view of Fig. 3.

Embodiment: referring to Fig. 1, Fig. 2, vehicle frame 6 of the present utility model is made up of two curb girders 1, crossbeam 2 and underframe 9, two front-wheels 13 and two trailing wheels 12 are housed in the bottom of vehicle frame 6, brake 11 is housed on trailing wheel 12, on two curb girders 1 of vehicle frame 6, be installed with dynamo power case 8, hand-pushing handle 10 and be slidingly fitted with coaster 7, coaster 7 is affected by steel rope 4, one end of steel rope 4 is fixed on the crossbeam 2 by join card 3, by assembly pulley 5, the reel that the other end is fixed in the dynamo power case overlaps on 46 again.

The structure of dynamo power case 8 of the present utility model is referring to Fig. 3.Its casing is made up of side plate 14, panel 26, cover plate, base plate, bolt group 30,31,32 and rivet 29, casing is equipped with manual rocking handle assembly 34,35,36,37 outward, thereafter be connected with the quick clutch self-locking device of screw thread, this device is made up of six head nuts 15, Friction disk 16, ratchet 17, clutch nut 18, joint bolt 19, packing ring 27, spring 20, Spring Card 21, flange 22 and ratchet 48, torsion spring 53, pawl axis 51 (seeing Fig. 4,5); Two-stage gear drive and cable drum group are housed in the casing, first order transmission group is made up of main shaft 39, driving wheel 42, flat key 41, bearing 43, bearing seat 38, second stage transmission group is made up of transmission shaft 23, follower 25, driving wheel 40, bearing 33, bearing seat 24, the cable drum group is mainly by reel rotating shaft 28, left and right reel disc 44,45 and reel cover 46 are formed, and wherein the double again gear of reel disc 44 cooperates transmission with driving wheel 40.

Also design has the lowest order stop motion mechnism in dynamo power case of the present utility model, see Fig. 3, Fig. 4, set up a ratchet 47 in the outer end of ratchet shaft 51, in the design of the outer of clutch nut 18 ratchet slot that matches is arranged, be connected with a rocking bar 50 on the ratchet shaft 51 with the ratchet slot clutch of control ratchet 47 with clutch nut 18, the other end of rocking bar 50 is equipped with pulley 52 and is connected with steel rope 4 rollings, control rocking bar 50 actions simultaneously for keeping both to roll connecting, an extension spring 49 also is housed on rocking bar 50.

Below sketch its principle of work: when promoting goods, shake handle 34 and drive flange 22 and clutch nuts 18, push down six head nuts 15, rotate thereby drive main shaft 39.Main shaft 39 is by driving wheel 42 transmission followers 25 and driving wheel 40 drive drum dish 44, reel disc 45 and reel cover 46 again, driving steel rope 4 reels in the groove between reel disc 44 and 45, when stopping to rise, because spring 20 is pressed to six head nuts 15 to clutch nut 18 all the time, friction lining 16 and ratchet 17 are pressed together all the time, ratchet 48 stops the ratchet counter-rotating, thereby makes weight be parked in eminence under the effect of torsion spring 53.During decline, turning handle is thrown off clutch nut 18 and six head nuts 15, thereby friction lining 16 and ratchet 17 are unclamped, and descends under the effect of weight deadweight.After fall block drops to nadir, be rotated further handle, steel rope 4 pines, under the effect of extension spring 49, rocking bar 50 rotates to an angle, and drives pawl axis 51 and ratchet 47 rotations, ratchet 47 snaps in the outer of clutch nut 18, stops its rotation, thereby reaches the lowest order stopping function.

Claims

1. be used to transport a kind of hand fork lifter of handling goods, mainly by vehicle frame, be contained in the front-wheel of bottom of frame, trailing wheel, brake gear, fall block, the dynamo power case, haulage cable, assembly pulley is formed, dynamo power case wherein is by manual rocking handle, the quick clutch self-locking device of screw thread, driving device, the cable drum group is formed, it is characterized in that: set up the lowest order stop motion mechanism in the dynamo power case therein, the outer ratchet slot of promptly setting up the clutch nut in a ratchet and the quick clutch self-locking device of screw thread cooperates, this ratchet is controlled by a rocking bar, the rocking bar other end is equipped with pulley and connects with the steel rope rolling, and an extension spring that keeps pulley and steel rope to roll and connect is housed on rocking bar.

2. hand fork lifter according to claim 1 is characterized in that: the driving device in the dynamo power case is the gear transmission that adopts two-stage above.