CN104355273A - Pallet fork frame structure of forklift truck and reach forklift truck - Google Patents

Abstract

The invention discloses a fork frame structure of a forklift and a forward-moving forklift. The fork frame and the inner mast of the forklift are connected through a tilting and side-moving mechanism that realizes the four-way movement of the fork frame; the forward-moving forklift , including the forklift frame structure of the above-mentioned structure; the inclined lateral movement mechanism can realize the lateral movement of the fork frame in the left and right direction and the inclined movement in the front and rear directions, and can realize the two functions of side movement and inclined movement, under the same conditions and the same The lifting height is flexible, which can improve the work efficiency and application flexibility of the reach truck. Simultaneously, the structure of the tilting and side shifting mechanism is simple, the structure of the fork frame of the forklift is simple, and the assembly is convenient.

Description

Forklift fork frame structure and reach-type forklift

technical field

The invention relates to a reach truck, in particular to a fork frame structure of the reach truck.

Background technique

Reach truck is a kind of storage forklift driven by batteries for industrial handling and loading and unloading. It is mainly used in tobacco, food, textile, electronics, printing and other industries for loading and unloading, stacking and short-distance pallet goods. Forward-moving wheeled handling vehicles for transport operations. Especially suitable for working in narrow lanes and narrow spaces.

In order to facilitate the fork picking and stacking of goods, and improve the flexibility and handling efficiency of the forklift, it is necessary to equip the reach forklift with a mast side shifter. The side shifter can allow the goods on the fork to move laterally for a certain distance. , especially suitable for various working occasions of forklift handling and stacking. However, most of the existing forklift products can only realize the lateral movement function in two directions. In the existing forklift products, the integral side shifter can be welded to realize the side shifting function, but the side shifting can only realize the left and right lateral side shifting function of the goods, but not the longitudinal tilting movement function; that is, the left and right lateral side shifting cannot be realized at the same time The two functions of vertical and longitudinal tilting movement make the application function of the forklift limited and the use is relatively simple; and under the same conditions and the same lifting height, the download weight is low and the operation is not flexible, which affects the use efficiency of the forward truck.

At the present stage, there is also a public technology of a reach truck that can simultaneously realize the functions of tilting and side shifting, but the parts of the disclosed forklift that can realize the functions of tilting and side shifting are complex in structure and cumbersome to assemble.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a forklift fork frame structure and a forward-moving forklift that are simple in structure, easy to assemble, can realize four-way movement of the fork frame, and improve the use efficiency of the forklift.

In order to achieve the above object, the technical scheme adopted in the present invention is:

In the forklift frame structure of the forklift, the fork frame is connected with the inner mast frame of the forklift through a tilting and lateral movement mechanism that realizes the four-way movement of the fork frame.

The reach-type forklift includes the forklift frame structure of the above-mentioned structure.

The present invention has the advantages of: the fork frame structure of the forklift, the inclined lateral movement mechanism connects the fork frame and the inner mast of the forklift, and the inclined lateral movement mechanism can realize the lateral movement of the fork frame in the left and right direction and the inclined movement in the front and rear direction, It can realize two functions of side shifting and tilting shifting. Under the same conditions and the same lifting height, the operation is flexible, and the work efficiency and application flexibility of the reach forklift can be improved.

Description of drawings

The content expressed in each accompanying drawing of the description of the present invention and the marks in the figure are briefly described below:

Fig. 1 is a structural schematic diagram of a forklift frame structure of a forklift according to the present invention.

Fig. 2 is a schematic structural view of the fork frame structure of the forklift shown in Fig. 1 after removing the limit plate.

Fig. 3 is a structural schematic diagram of another viewing angle of the forklift frame structure of the forklift shown in Fig. 1 after removing the limiting plate.

Fig. 4 is a structural schematic diagram of the fork frame of the fork frame structure of the forklift according to the present invention.

Fig. 5 is a structural schematic diagram of the inner frame of the forklift frame structure of the present invention.

Fig. 6 is a structural schematic diagram of the front frame of the fork frame structure of the forklift according to the present invention.

Fig. 7 is a structural schematic diagram of the upper roller shaft of the forklift frame structure of the forklift according to the present invention.

Fig. 8 is a structural schematic diagram of the side-moving oil cylinder of the fork frame structure of the forklift according to the present invention.

Fig. 9 is a structural schematic diagram of the tilting oil cylinder of the fork frame structure of the forklift according to the present invention.

Fig. 10 is a structural schematic diagram of the string shaft of the forklift frame structure of the present invention.

Fig. 11 is a schematic diagram of the installation structure of the rollers of the fork frame structure of the forklift according to the present invention.

The symbols in the above figures are:

1. Fork frame, 2. Roller, 3. Tilt cylinder, 4. Side shift cylinder, 5. Inner frame, 6. String shaft, 7. Front frame, 8. Fork frame mounting plate, 9. Inner frame side plate , 10, installation shaft, 11, top horizontal plate, 12, bottom horizontal plate, 13, inner frame mounting plate, 14, structural reinforcement plate, 15, tilting cylinder mounting hole, 16, positioning block, 17, tilting cylinder mounting plate, 18. Side plate, 19. Mounting plate for side shifting cylinder, 20. Lower beam, 21. Compression block, 22. Mounting hole for side shifting oil cylinder, 23. Limiting plate, 24. Mounting hole for limiting plate, 25. Roller installation Holes, 26, axle sleeves, 27, roller shafts, 28, cylinders, 29, square columns, 30, bolt holes, 31, adjusting gaskets, 32, fixing bolts, 33, gaskets, 34, cargo forks.

Detailed ways

The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings. The purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solutions of the present invention. and contribute to its implementation.

As shown in Figures 1 to 3, in the forklift frame structure of the forklift, the fork 34 of the forklift is hung on the fork frame 1, and the fork frame 1 and the inner mast of the forklift realize the inclination of the four-way movement of the fork frame 1 side-shift mechanism is connected. In the forklift frame structure of the forklift, the inclined lateral movement mechanism connects the fork frame 1 and the inner mast of the forklift. The two functions of moving and tilting can be operated flexibly under the same conditions and the same lifting height, which can improve the working efficiency and application flexibility of the reach truck.

The inclined lateral movement mechanism includes a front frame 7 and an inner frame 5, and the front frame 7, the inner frame 5 and the fork frame 1 are set on a series of shafts 6; Rod and cargo fork frame 1 are connected or press contact, and when side shifting oil cylinder 4 works, pallet fork frame 1 moves left and right under the piston rod thrust effect of side shifting oil cylinder 4. The inner frame 5 is provided with an inclined oil cylinder 3, the piston rod of the inclined oil cylinder 3 is in contact with the front frame 7, and when the inclined oil cylinder 3 is working, the front frame 7 and the fork frame 1 move forward and backward under the thrust of the piston rod of the inclined oil cylinder 3 . The front frame 7, the inner frame 5 and the fork frame 1 are set on the same string shaft 6, and the inclined side shifting mechanism has simple structure and convenient assembly. Further, the fork frame of the forklift has a simple structure and is easy to assemble.

The front frame 7, the inner frame 5 and the fork frame 1 are set on the same string shaft 6, and the structure of the string shaft 6 is shown in FIG. 10 . The string shaft 6 is connected with the fork frame 1, the front frame 7 and the inner frame 5, and when the tilting function and the side shifting function of the pallet 1 are realized, they all move on the string shaft 6. When the fork frame 1 realizes the tilting function, the fork frame 1 and the front frame 7 rotate around the string shaft 6, and when the fork frame 1 realizes the side shift function, the pallet 1 moves left and right on the string shaft 6. When the side shifting cylinder 4 works, the piston rod of the side shifting oil cylinder 4 pushes the fork frame 1 to move on the string shaft 6, and the fork frame 1 moves left and right to meet the working requirements of the forward moving forklift and improve work efficiency. When the tilting cylinder 3 is working, the piston rod of the tilting cylinder 3 pushes the front frame 7 and the fork frame 1 to rotate around the string shaft 6 together, and the fork frame 1 moves back and forth, which meets the working requirements of the forward-moving forklift and improves work efficiency .

The front frame 7 is provided with a roller 2, and the fork frame 1 is in contact with the outer wall of the roller 2; when the side shift cylinder 4 is working, the piston rod of the side shift oil cylinder 4 pushes the fork frame 1 to move on the string shaft 6, and the fork frame 1 moves Rolling contact with the roller 2 during the process; rolling contact with the front frame 7 when the fork frame 1 moves instead of sliding contact can reduce friction and increase the stability of the lateral movement of the fork frame 1. The number of rollers 2 can be adjusted according to specific conditions, and for ensuring the stability of the movement of pallet fork frame 1, rollers 2 are arranged on the front frame 7 in pairs.

As shown in Figure 11, the roller 2 is sleeved on the roller shaft 27, the roller shaft 27 and the front frame 7 are connected by a fixing bolt 32, and an adjusting washer 31 is set on the end where the fixing bolt 32 and the front frame 7 are connected, and the adjusting washer 31 It is located between the front frame 7 and the rolling shaft. A gasket 33 is provided on the end where the fixing bolt 32 is connected to the roller shaft 27 , and the gasket 33 is arranged between the fixing bolt 32 and the roller shaft 27 . The structure of the roller shaft 27 is shown in Figure 7, the middle part of the roller shaft 27 is a cylinder 28 for the set roller 2, the two ends of the roller shaft 27 are square columns 29 connected with the front frame 7, and the square column 29 is provided with a fixed bolt 32 to connect 30 bolt holes. One end that fixed bolt 32 is connected with front frame 7 is set with adjusting gasket 31, promptly is provided with adjusting gasket 31 between front frame 7 and roller shaft 27, and the thickness of adjusting gasket 31 can be adjusted according to actual demand, can like this The verticality of the vertical direction of the pallet fork frame 1 is adjusted to improve the working reliability of the pallet fork frame 1 .

That is to say, the roller 2 has two purposes: on the one hand, when the fork frame 1 is in contact with the roller 2 when it moves, the sliding contact between the fork frame 1 and the front frame 7 changes from a sliding contact to a rolling contact, the friction force is reduced, and the fork frame 1 moves sideways increased stability. On the other hand, the roller 2 is connected to the front frame 7 by the roller shaft 27, and the roller shaft 27 and the front frame 7 are connected by a fixing bolt 32, and an adjusting spacer 31 is added on the fixing bolt 32 to adjust the vertical position of the fork frame 1. The verticality of the direction improves the working reliability of the fork frame 1.

As shown in FIG. 4 , the top of the fork frame is provided with a fork frame mounting plate 8 sleeved on the string shaft 6 . When the fork frame 1 moves laterally, the fork frame mounting plate 8 is sleeved on the string shaft 6, and the string shaft 6 has a movement guiding effect to ensure the stability of the movement of the fork frame 1 and the working reliability of the reach-type forklift.

As an embodiment, there are two side shift oil cylinders 4, and the piston rods of the two side shift oil cylinders 4 are respectively connected to a pallet mounting plate 8. When one of the side-shifting oil cylinders 4 was working, the piston rod of the side-moving oil cylinder 4 stretched out and retracted, driving the fork frame mounting plate 8 to move to one side, and further driving the fork frame 1 to move to one side. When the other side shift oil cylinder 4 is working, the piston rod of the other side shift oil cylinder 4 stretches out and retracts, driving the fork frame mounting plate 8 to move to the opposite side, and further driving the fork frame 1 to the opposite side Move sideways.

As another embodiment, the side shifting cylinder 4 is a two-way hydraulic cylinder, and the piston rods on both ends of the side shifting oil cylinder 4 are respectively pressed and contacted with a fork frame mounting plate 8 . In one working state of the side shifting cylinder 4, a piston rod of the side shifting oil cylinder 4 stretches out, and a piston rod of the side shifting oil cylinder 4 pushes a fork frame mounting plate 8 to move, pushing the fork frame 1 to one side laterally move. In another working state of the side-shift cylinder 4, the other piston rod of the side-shift cylinder 4 stretches out, and the other piston rod of the side-shift cylinder 4 pushes the other fork frame mounting plate 8 to move, pushing the fork frame 1 direction The opposite side moves sideways. By changing the working state of the side-moving oil cylinder 4, the lateral movement of the fork frame 1 in two directions can be realized.

The side shift oil cylinder 4 is a two-way hydraulic cylinder, and there is no need for connection between the side shift oil cylinder 4 and the fork frame mounting plate 8, only pressing contact is required, the structure is simple, and the assembly operation is convenient.

As shown in Figure 8, the oil inlet joint and the oil return joint of the forklift mast pipeline are provided on the side shift cylinder 4, and the two joints on the side shift cylinder 4 are connected to the rubber hose of the forklift mast pipeline; The oil pipe realizes the oil inlet, and the oil return joint is connected to the oil pipe to realize the oil return, so that the piston rod can expand and contract back and forth to realize the side shift function.

As shown in Figure 5, the inner frame 5 includes the inner frame side plate 9 connected with the inner door frame of the forklift, the inner frame side plate 9 is provided with a mounting shaft 10, and the shaft head of the mounting shaft 10 is provided with the inner door of the forklift. The composite rollers connected by the frame, the inner frame 5 can roll up and down inside the inner mast to realize the handling of the forklift. Inner frame side plate 9 tops are provided with top transverse plate 11, and inner frame side plate 9 bottoms are provided with the bottom transverse plate 12 that contacts with front frame 7, and bottom transverse plate 12 is used for increasing the structural strength of inner frame 5. The top horizontal plate 11 is provided with an inner frame mounting plate 13 sleeved on the string shaft 6, and the two sides of the inner frame mounting plate 13 are respectively provided with a structural reinforcement plate 14 connected with the top horizontal plate 11, and the structural reinforcement plate 14 is used to increase The structural strength of the inner frame mounting plate 13 improves the reliability when the inner frame 5 rotates. The number of the inner frame mounting plates 13 can be adjusted according to the needs of the realization. For the convenience of arrangement, the preferred inner frame mounting plates 13 are three, and the two ends and the middle of the top horizontal plate 11 are respectively provided with one. For the clarity of the drawings, the middle inner frame mounting plate 13 The structural reinforcing plates 14 on both sides are not shown. The inclined cylinder 3 is installed on the lower end of the inner frame side plate 9; the inner frame side plate 9 is provided with a pair of inclined oil cylinder mounting holes 15 and positioning blocks 16, and the inclined oil cylinder 3 has an inclined oil cylinder connected with the inner frame side plate 9 Mounting plate 17. The inclined oil cylinder mounting plate 17 is connected with the inclined oil cylinder mounting hole 15 by bolts. When the inclined oil cylinder 3 is installed, the inclined oil cylinder 3 is just placed on a pair of positioning blocks 16, so that the installation and positioning of the inclined oil cylinder 3 is realized, and the convenience of assembly and the reliability of installation are improved.

Fork frame 1 inclination function (moving function in front and rear direction) relies on inclination oil cylinder 3 to realize, and inclination oil cylinder 3 is installed on the inner frame side plate 9, and inclination oil cylinder 3 is arranged in pairs, and each one on the left and right inner frame side plate 9. The inclined oil cylinder 3 is installed on the inner frame side plate 9 on the right side on Fig. 5, and the inclined oil cylinder 3 on the left inner frame side plate 9 is not seen in the figure because of the angle problem. As shown in FIG. 9 , the tilting oil cylinder 3 has an oil inlet connector and an oil return connector, and the oil inlet connector and the oil return connector are connected to the rubber hose of the mast pipeline of the forklift. Equally the oil inlet joint is connected to the oil inlet pipe to realize oil intake, and the oil return joint is connected to the oil return pipe to realize oil return, so that the piston rod above the inclined oil cylinder 3 moves forward and backward, and the piston rod promotes the front frame 7 and the fork frame 1 to move together to realize the tilting function.

As shown in Figure 6, the front frame 7 includes two side plates 18 connected to the two ends of the string shaft 6, the two side plates 18 are provided with a shaft sleeve 26, and the shaft sleeve 26 on the side plate 18 is connected with the string shaft 6 through a bearing. The side plate 18 can rotate around the string shaft 6 to drive the front frame 7 to rotate on the string shaft 6 . The front frame 7 also includes a side-moving cylinder mounting plate 19 connected to the top of the side plates 18 and a lower crossbeam 20 connected to the bottom of the two side plates 18; . The side shift oil cylinder mounting plate 19 is used for installing the side shift oil cylinder 4. As a preferred solution, the side shift oil cylinder mounting plate 19 is provided with a groove, the side shift oil cylinder 4 is placed in the groove, and the side shift oil cylinder mounting plate 19 is provided with a side Move the oil cylinder mounting hole 22, and the side shift oil cylinder 4 is fixed on the side shift oil cylinder mounting plate 19 by bolts to prevent the side shift oil cylinder 4 from rotating. The lower beam 20 is used to increase the structural strength of the front frame 7 on the one hand, and on the other hand provides the installation position of the rollers 2. The lower beam 20 is provided with roller mounting holes 25 for installing the rollers 2 arranged in pairs, and the roller shafts 27 and rollers are installed. The holes 25 are connected by bolts; the pressing block 21 on the lower beam 20 provides the pressing position of the piston rod of the tilting cylinder 3 to ensure the reliable tilting movement of the whole pallet 1 .

As shown in Figure 1, the outside of the side plates 18 are respectively connected to the limit plate 23, the two ends of the string shaft 6 stretch out from the side plate 18, and the end faces of the two ends of the string shaft 6 are in contact with the limit plate 23; The plate 23 is installed on the side plate 18 by bolts, and the side plate 18 has a pair of limiting plate mounting holes 24 arranged thereon. The limiting plate 23 fixes the string shaft 6, prevents the string shaft 6 from moving left and right, and provides reliable support for the four-way movement of the fork frame 1.

The reach-type forklift includes the forklift frame structure of the above-mentioned structure.

The present invention has been exemplarily described above with reference to the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as various insubstantial improvements are made using the method concept and technical solution of the present invention; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, all within the protection scope of the present invention within.

Claims (10)

1. a fork of forklift truck shelf structure, is characterized in that: described goods shelf is connected by the inclined side moving mechanism realizing the movement of goods shelf four-way with the inner upright mounting of fork truck.

2. fork of forklift truck shelf structure as claimed in claim 1, it is characterized in that: described inclined side moving mechanism comprises side arm and internal frame, described side arm, internal frame and goods shelf are sleeved on a string axle; Described side arm is provided with sidesway oil cylinder, and the piston rod of described sidesway oil cylinder is connected with goods shelf or compresses contact; Described internal frame is provided with dump ram, and the piston rod of described dump ram compresses with described side arm and contacts.

3. fork of forklift truck shelf structure as claimed in claim 2, is characterized in that: described side arm is provided with roller, described goods shelf and described roller wall contacts.

4. fork of forklift truck shelf structure as claimed in claim 3, is characterized in that: described roller housing is on roller shaft, and described roller shaft is connected by bolt of rear end plate with described side arm, one end that described bolt of rear end plate is connected with described side arm is set with adjustment pad.

5. the fork of forklift truck shelf structure as described in Claims 2 or 3 or 4, is characterized in that: the top of described goods shelf is provided with the goods shelf adapter plate be sleeved on described string axle; Described sidesway oil cylinder is two, and piston rod respectively with the goods shelf adapter plate of two sidesway oil cylinders is connected.

6. the fork of forklift truck shelf structure as described in Claims 2 or 3 or 4, it is characterized in that: the top of described goods shelf is provided with the goods shelf adapter plate be sleeved on described string axle, described sidesway oil cylinder is two-way hydraulic cylinder, and piston rod respectively with the goods shelf adapter plate on described sidesway oil cylinder two ends compresses and contacts.

7. the fork of forklift truck shelf structure as described in Claims 2 or 3 or 4, is characterized in that: described internal frame comprises the internal frame side plate be connected with the inner upright mounting of fork truck, and described internal frame side plate top is provided with top cross plate; Described top cross plate is provided with the internal frame adapter plate be sleeved on described string axle; Described dump ram is arranged on described internal frame side plate.

8. the fork of forklift truck shelf structure as described in Claims 2 or 3 or 4, it is characterized in that: described side arm comprises the biside plate be connected with described string axle two ends, also comprises the sidesway oil cylinder adapter plate being connected to described biside plate top and the cross sill being connected to described biside plate bottom; Described cross sill is provided with and compresses with described dump ram the compact heap contacted.

9. fork of forklift truck shelf structure as claimed in claim 8, it is characterized in that: described biside plate outside is connected to positioning plate, described side plate is stretched out in the end, two ends of described string axle, and end, the two ends end face of described string axle contacts with described positioning plate.

10. a reach truck, is characterized in that: comprise the fork of forklift truck shelf structure described in claim 1-9.