SU1370062A1 - Forklift - Google Patents

Description

(21) 4033155 / 27-11

(22) 03/07/86

(46) 01/30/88. Bul № 4 (75) B.N.Vanchinov

(53) 621.865 (088.8)

(56) Patent of Canada No. 1166997, cl. In 66 F of 9/12, 1984.

(54) FORKLIFT LOADER

(57) The invention relates to a lifting and transport machinery, namely to forklifts. The purpose of the invention is to increase the reliability of work and productivity. The forklift contains base 1, carriage 3, frame 4 of vertical and longitudinal movement. Furs

thirty

The movement of the carriage 3 is made in the form of a screw 6 with a floating nut 13. The rollers I5 are spherical and mounted with a clearance in the guides 16 in the form of a circular pipe. The loader is equipped with a locking mechanism for the latch 20 of the frame 4 with brake pads for 21 wheels. When the pedal 28 is depressed, the wheels are braked by the pads 21, while the stops 32 are released and the forklift 2 is moved forward to grab the load with the fork 5. After the load is grabbed, the forklift 2 goes back and locks and the brake pads release the wheels. 2 а.п. f-ly, I About il.

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The invention relates to a lifting machinery industry, namely to forklifts.

The purpose of the invention is to increase the reliability of work and productivity.

1 shows a general view of a forklift; Fig. 2 is a kinematic diagram of the mechanism for the vertical movement of a forklift carriage; FIG. 3 shows the installation of the nut of the carriage vertical movement mechanism; FIG. 4 is a view A of FIG. 3; FIG. 5 shows a roller of carriages; Figure 6 is a diagram of the operation of a vertical carriage roller with uniform load loading; 7 - the same, with uneven loading of cargo or transverse tilts of the loader; Fig. 8 shows a locking mechanism for locking the horizontal frame of the longitudinal movement with brake pads of the front wheels; figure 9 is a node I on Fig; FIG. 1 O is a section BB in FIG. 8.

The forklift contains a base 1 and a forklift 2. The base 1 is equipped with two pairs of wheels. Forklift 2 is equipped with a carriage 3 mounted for vertical movement and mounted on a horizontal frame 4 mounted for longitudinal movement relative to the base 1. Carriage 3 is equipped with a fork 5, a vertical movement drive in the form of a screw 6 suspended from the upper traverse 7 of a forklift 2 using, for example, a thrust bearing 8.

The forks grip 5 is equipped with a forking mechanism that is made in the form of a screw 9 with opposite threads and nuts. The screw 6 for the drive of the vertical movement of the carriage 3 in the lower part is provided with a support in the form of a ball angular contact bearing 1 O and is connected to the electric motor 11 by a temporary transmission 12. On the screw 6 there is a nut 13 placed in the housing 14. The housing 14 is rigidly connected with the carriage 3 vertical movement. The bearing surface of the nut 13 and the contacting surface of the housing 1 are made spherical with the center of the spherical surface located on the axis 00 of rotation of the cylindrical studs with which the nut 13 is provided, and in

five

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five

0

five

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five

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five

the housing 14 has vertical grooves that prevent the nut 13 from turning in the housing 14; such a connection of the nut 13 with the housing 14 makes it possible to make floating movements of the housing 14 with the carriage 3 about the axis 00 to compensate for distortions from uneven loading of the load and the terrain.

The carriage 3 and the horizontal frame 4 have rollers 15, which are spherical and installed with a gap in the guides 16, formed in a circular tube. For adjusting the gap between the roller 15 and the guide 16, gaskets 17 are used between the flange of the roller axis I8 and the support flange sleeve 19 installed in the carriage 3 or frame 4.

The base 1 is equipped with a locking mechanism for the latch 20 of the frame 4 for longitudinal movement of the forklift 2 with brake pads (brakes) 21 of the front wheels of the base 1. The latch 20 and the brake pads 21 of the front wheels are connected by corresponding pins 22 and 23 (there are two) and levers 24 and 25 with a rod 26 installed in the brackets 27 of the base 1. On the rod 26 a pedal 28 of the locking mechanism is installed.

The loader is equipped with handles 29 and 30. The latch 20 contains a spring-loaded rod 31, and the frame 4 - stops 32 and 33. With 22, the cam 34 is mounted, which is installed with the ability to interact with a tapered groove embedded in the lock 20,

The device works as follows.

During operation in the initial position with no cargo, the carriage 3 is located in the upper or lower position, depending on the position of the cargo being processed. A worker with a handle 29 and 30 brings the loader to the work site and moves the frame 4 of the forklift 2 to the front extreme position, after first pressing the control pedal 28, locking the front wheels with brake pads 21 installed in the guide grooves of the front wheel brackets and driven In motion t gami 23 and levers 25 and with the help of the lever 24 and t gi 22, moving the spring-loaded rod 31 of the retainer 20 down and releasing the locking support 32 of the carriage 4, the frame 4 is pushed into the forward position 33, the pedal 28 is released from the impact. The motor I1 is turned on by turning the handle 30 and the wines 6 are rotated by means of a V-belt transmission 12. During the rotation of the screw 6, the torque is converted into translational motion of the nut 13, which is transmitted through the supporting spherical surface of the body 1A to the carriage 3. The carriage 3 is moved with the help of rollers 15 in the guides 16 with a fork 5, set it to the required height depending on the position of the load. By turning the handle 30 to the neutral position, the electric motor 11 is disconnected. Fork 5 is brought under the load mounted on the pallet and captures it. Then, turning the handle 30 turns on the electric motor 11 on the Rise until fork forks 5 take over the weight of the load.

With uniform loading of the forks 5, the rollers 15, under the influence of the load, are pressed against the guides 16 and tend to take up a middle position. When the load has a lateral displacement of the center of gravity or the loader is tilted to the side, a slight lateral displacement of the rollers 15 in the guides 16 occurs depending on the floor topography (Fig. 7). In this position, the roller I5 spherical surface rolls along a smaller radius of the cylindrical guide 16, the reaction of which tends to return the roller 15 to the middle position, which prevents friction of the end surfaces of the roller I5 against the guide rail 16. After the load is caught by the fork 5, the foot pedal 28 is depressed and a forklift 2 with a load acting on the handles 29 and 30 is moved to the extreme rear position, the control pedal 28 is free from the feet, the brake pads 21 of the front wheels are disengaged The frame 4 is fixed by a spring-loaded rod 31 of the retainer 20 and an emphasis 32. The adjustment of the gaps between the brake pads 21 and the front wheels, as well as the position of the rod 31 by the retainer 20 relative to the fixing lugs 32 and 33 of the frame 4, is performed by threads,

70062

The connecting rods are connected to the brake pads 21 of the front wheels and the cam 32 of the retainer 20. The loader is mounted on a forks 5

the load is moved with the help of the handles 29 and 30 to the place of unloading, then the control pedal 28 is pressed, the carriage 4 is pushed forward, fixed. The load to be processed is moved to the place of destination by moving the fork carriage 3.

The floating connection of the propeller nut with the carriage eliminates the effect of uneven loading of the forks, transverse oscillations of the carriage and the terrain. Making the rollers spherical and installing them 20 in circular guides with the ability to adjust the gap between the roller and the guide eliminates the possibility of jamming of the rollers reduces their wear, makes it possible

25

with smaller rink sizes and

sections of guides to carry large loads by increasing the contact area. Installing a locking system with a frame lock, controlled by a pedal, greatly facilitates longitudinal movement to the forklift relative to the base, improves the service culture and labor productivity when performing the specified operation.

Claims (3)

1. A forklift containing a base with horizontal guides supported on wheels mounted for longitudinal movement along these tracks on rollers a horizontal frame, 45 of which has a forklift mounted with a carriage mounted for vertical movement along its guides rollers driven, characterized in that, with a 50 goal of increasing reliability and productivity, it is equipped with a lock of the said frame mounted on the basis and a lock lock mechanism with a brake lock the wheels. 55 2. Pop-1 loader, distinguished by the fact that the rollers are spherical and installed with a gap with the possibility of its adjustment in the forklift guides  one and bases that are made round. 3. A loader according to claim 1, about tl and - due to the fact that said locking mechanism contains three rods connected at one end by means of levers to a horizontal pedal of control on a rod which is fixed in brackets mounted on the base, the other ends of two tons g is spring loaded and connected with 700626 brakes, and the third one is connected to a cam mounted to interact with a tapered groove which is made on said retainer, the latter being made in the form of a spring-loaded rod, in the upper part of which a slit is made and installed 10 with the possibility of vertical linear movement and interaction with its slot with stops, which are fixed on the specified frame. Fut.3 ci Fi.V 1370062 Type A FIG. four Fie.7 FIG. eight 12 20 Phi. YU