A portal jib lift double pallet stacker truck

Abstract

The utility model relates to a double tray stacker with gate seat supporting leg liftable, including frame assembly, handle group, lifting frame group, inner door frame, door frame lifting cylinder subassembly, gate seat lifting cylinder subassembly and drive box, frame assembly includes frame base and the outer door column and gate seat welded into an organic whole, the upper surface of frame base rear part is equipped with drive box, the lower side is equipped with electric drive wheel and flat top type trundle respectively, electric drive wheel is connected with handle group, frame base front part is equipped with a group of outer door column and gate seat, gate seat wheel frame is welded on gate seat front end, and the front wheel frame with double wheels is installed on gate seat wheel frame, and the oil cylinder support is welded on gate seat between outer door column, and the door frame lifting cylinder subassembly is fixedly installed on oil cylinder support, and the inner door frame is fixedly connected on the top of door frame lifting cylinder subassembly, and the lifting frame group is installed on inner door frame. This stacker is simple and easy to operate, convenient to use, can pass the road surface with gradient more conveniently and labor-savingly, can be suitable for more working occasions, and can carry two goods at a time, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to a handling device, specifically a double pallet stacker with liftable gantry legs. Background Technology

[0002] Pallet stacker trucks are now widely used in factory workshops, warehouses, logistics transfer centers, freight yards, and docks to load, unload, and stack palletized goods. However, conventional pallet stacker trucks, with their welded, one-piece frame structure, are prone to jamming when traversing steep inclines, causing the door support legs to easily contact the road surface, resulting in the electric drive wheels becoming suspended and the entire vehicle becoming stuck. Furthermore, conventional pallet stacker trucks can only move one pallet at a time, leading to relatively low work efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a double pallet stacker that can smoothly pass through roads with a maximum slope after the gantry legs are raised and lowered, and can transport two palletized goods at a time, in view of the defects and deficiencies of existing related equipment.

[0004] The specific technical solution of this utility model is as follows: a double-pallet stacker with adjustable gantry legs, comprising a frame assembly, a handle assembly, a lifting frame assembly, an inner mast, a mast lifting cylinder assembly, a gantry lifting cylinder assembly, and a drive box. The frame assembly includes a frame base and an outer gantry and gantry seat welded together. The drive box is mounted on the upper rear of the frame base, and electric drive wheels and flat-top casters are mounted on the lower two sides respectively. The electric drive wheels are connected to the handle assembly, and the steering of the electric drive wheels is directly driven by rotating the control handle of the handle assembly. Considering operation on steep slopes, the motor of the electric drive wheel is a brushless type with a power of kW, which makes climbing more powerful. The front two sides of the frame base are provided with U-shaped grooves, and each U-shaped groove is equipped with a set of outer gantry and gantry seats welded together. Two composite rollers are mounted on one side of the outer gantry, which roll up and down along the height of the gantry, increasing the flexibility and balance of the upper and lower movement of the outer gantry. A load-bearing central beam is installed between the outer doorposts. A door seat wheel frame is welded to the front end of the door seat. A front wheel frame with double wheels is installed on the door seat wheel frame. A hydraulic cylinder support is also welded between the outer doorposts and the door seat. A door frame lifting hydraulic cylinder assembly is fixedly installed on the hydraulic cylinder support. The top of the door frame lifting hydraulic cylinder assembly is fixedly connected to the inner door frame. A lifting frame assembly is installed on the inner door frame. The lifting frame assembly is equipped with forks.

[0005] Furthermore, the door seat is a rectangular hollow tube, and a push rod is installed inside the door seat. The front end of the push rod is connected to the front wheel frame through a pin, and the rear end of the push rod is equipped with a spherical bearing, which is connected to the crank arm. The upper part of the two crank arms is welded and fixed to the outer door pillar and door seat through the long shaft of the crank arm. The bottom of the crank arm is equipped with a crank arm roller that rolls in contact with the bottom of the drive box. The outer side of the outer door pillar is also equipped with a door seat lifting cylinder assembly, and the other end of the door seat lifting cylinder assembly is fixedly connected to the chassis base.

[0006] Furthermore, the upper part of the gantry lifting cylinder assembly is equipped with a lifting rod joint. The top of the lifting rod joint abuts against the inner gantry. The lifting rod joint is equipped with a sprocket shaft, and sprockets are installed at both ends of the sprocket shaft. A chain is installed on the sprocket. One end of the chain is connected and fixed to the load-bearing beam of the outer gantry by a U-bolt, and the other end is connected to the lifting frame assembly, which can lift the entire lifting frame assembly.

[0007] Furthermore, the outer mast is equipped with a C-shaped mast slot, and two inner mast rollers are installed on each side of the bottom of the inner mast. The inner mast rollers are inserted into the C-shaped mast slots, improving the flexibility and stability of the inner mast's vertical movement. The length of the lifting frame cross rail has been increased, making it suitable for use with narrow pallets when the forks are placed on the mast seat; and suitable for use with wide pallets when the forks are moved to the outside of the mast seat.

[0008] The beneficial effects of this utility model are: this stacker truck is easy to operate and use, can pass through sloping roads more conveniently and effortlessly, can be applied to more work occasions, and can transport two pallets of goods at once, thus improving work efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0010] Figure 2 This is a partial cross-sectional view of the forklifts in the main view of this utility model.

[0011] Figure 3 This is a top view of a partial cross-sectional structure of the present invention. Detailed Implementation

[0012] Embodiments of this utility model are described in conjunction with the accompanying drawings.

[0013] A double-pallet stacker truck with adjustable gantry legs includes a frame assembly 1, a handle assembly 2, a lifting frame assembly 3, an inner mast 4, a mast lifting cylinder assembly 5, a gantry lifting cylinder assembly 6, and a drive box 7. The frame assembly 1 includes a frame base 26 and an outer gantry 11 and a gantry 12 welded together. The drive box 7 is mounted on the upper rear of the frame base 26, and electric drive wheels 8 and flat-top casters 9 are mounted on the lower sides respectively. The electric drive wheels 8 are connected to the handle assembly 2, and the steering of the electric drive wheels 8 is directly driven by rotating the control handle 10 of the handle assembly 2. Considering operation on steep slopes, the motor of the electric drive wheel 8 is a 1kW brushless type, which provides more powerful climbing ability. The front two sides of the frame base 26 are provided with U-shaped grooves, each of which is equipped with a set of welded outer gantry 11 and gantry 12. Two composite rollers 14 are mounted on one side of the outer gantry 11, which roll up and down along the height of the gantry, increasing the flexibility and balance of the outer gantry 11 in vertical movement. A load-bearing central beam is installed between the outer doorposts 11. A door seat wheel frame 13 is welded to the front end of the door seat 12. A front wheel frame 15 with double wheels is installed on the door seat wheel frame 13. A hydraulic cylinder support is also welded between the outer doorposts 11 and the door seat 12. A gantry lifting hydraulic cylinder assembly 5 is fixedly installed on the hydraulic cylinder support. The top of the gantry lifting hydraulic cylinder assembly 5 is fixedly connected to the inner door frame 4. A lifting frame assembly 3 is installed on the inner door frame 4. The lifting frame assembly 3 is equipped with forks 25.

[0014] The door seat 12 is a rectangular hollow tube. A push rod 16 is installed inside the door seat 12. The front end of the push rod 16 is connected to the front wheel frame 15 through a pin. The rear end of the push rod 16 is equipped with a spherical bearing 17, which is connected to the crank arm 18. The upper parts of the two crank arms 18 are welded and fixed to the outer door pillar 11 and the door seat 12 through the crank arm long shaft 19. The bottom of the crank arm 18 is provided with a crank arm roller 20 that rolls in contact with the bottom of the drive box 7. The outer side of the outer door pillar 11 is also equipped with a door seat lifting cylinder assembly 6. The other end of the door seat lifting cylinder assembly 6 is fixedly connected to the frame base 26.

[0015] The upper part of the gantry lifting cylinder assembly 5 is equipped with a lifting rod joint 22. The top of the lifting rod joint 22 abuts against the inner gantry 4. The lifting rod joint 22 is equipped with a sprocket shaft. Sprockets 23 are installed at both ends of the sprocket shaft. Chains 24 are installed on the sprockets 23. One end of the chain 24 is connected and fixed to the load-bearing beam of the outer gantry 11 by a U-bolt 21, and the other end is connected to the lifting frame assembly 3, which can lift the entire lifting frame assembly 3.

[0016] The outer mast 11 is equipped with a C-shaped mast slot, and two inner mast rollers are installed on each side of the bottom of the inner mast 4. The inner mast rollers are inserted into the C-shaped mast slot, which improves the flexibility and stability of the inner mast 4 in moving up and down. The length of the lifting frame cross rail is increased, which makes it suitable for use with narrow pallets when the forks 25 are placed on the mast seat; and suitable for use with wide pallets when the forks are moved to the outside of the mast seat.

[0017] The drive box 7 has two oil outlets on the power pump station valve block 5. After installing the oil pipe connectors and oil pipes, they are connected to the mast lifting cylinder and the mast seat lifting cylinder, respectively. The buttons on the control handle 10 control the lifting and lowering actions of these two cylinders. When the vehicle needs to pass through a steep slope, simply press the control button for the mast seat lifting cylinder, and the piston rods of both sets of mast seat lifting cylinders will rise simultaneously, lifting the outer mast and mast assembly to a certain height. With the increased space at the bottom of the mast, it can smoothly pass through steep slopes. Similarly, when the lifting frame forks have already lifted one pallet of goods, the mast assembly can be used as forks. By extending it into the pallet and then raising it, the goods on another pallet can be lifted. Then, the goods on both pallets can be transferred, thus realizing the operation of double-pallet goods.

[0018] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-pallet stacker with adjustable gantry legs, characterized in that: The system includes a frame assembly (1), a handle assembly (2), a lifting frame assembly (3), an inner mast (4), a mast lifting cylinder assembly (5), a door seat lifting cylinder assembly (6), and a drive box (7). The frame assembly (1) includes a frame base (26) and an outer door post (11) and a door seat (12) welded together. The drive box (7) is mounted on the upper rear part of the frame base (26), and electric drive wheels (8) and flat-top casters (9) are mounted on the lower two sides respectively. The electric drive wheels (8) are connected to the handle assembly (2). The front two sides of the frame base (26) are provided with U-shaped grooves, and each U-shaped groove is equipped with a set of outer door posts (11) and door seats welded together. The outer doorpost (11) is located on one side of the U-shaped groove and is equipped with two composite rollers (14). A load-bearing central beam is installed between the outer doorposts (11). A doorpost wheel frame (13) is welded to the front end of the doorpost (12). A front wheel frame (15) with double wheels is installed on the doorpost wheel frame (13). A hydraulic cylinder support is also welded between the outer doorposts (11) and on the doorpost (12). A gantry lifting hydraulic cylinder assembly (5) is fixedly installed on the hydraulic cylinder support. An inner gantry (4) is fixedly connected to the top of the gantry lifting hydraulic cylinder assembly (5). A lifting frame assembly (3) is installed on the inner gantry (4). A fork (25) is provided on the lifting frame assembly (3).

2. The double-pallet stacker with adjustable gantry legs according to claim 1, characterized in that: The door seat (12) is a rectangular hollow tube. A push rod (16) is installed inside the door seat (12). The front end of the push rod (16) is connected to the front wheel frame (15) through a pin. The rear end of the push rod (16) is equipped with a spherical bearing (17). The spherical bearing (17) is connected to the crank arm (18). The upper part of the two crank arms (18) is welded and fixed to the outer door post (11) and the door seat (12) through the crank arm long shaft (19). The bottom of the crank arm (18) is provided with a crank arm roller (20) that rolls in contact with the bottom of the drive box (7). The outer side of the outer door post (11) is also equipped with a door seat lifting cylinder assembly (6). The other end of the door seat lifting cylinder assembly (6) is fixedly connected to the frame base (26).

3. A double-pallet stacker with adjustable gantry legs according to claim 1, characterized in that: The upper part of the gantry lifting cylinder assembly (5) is equipped with a lifting rod joint (22), the top of the lifting rod joint (22) abuts against the inner gantry (4), the lifting rod joint (22) is equipped with a sprocket shaft, the two ends of the sprocket shaft are equipped with sprockets (23), the sprockets (23) are equipped with chains (24), one end of the chain (24) is connected and fixed to the load-bearing beam of the outer gantry (11) by a U-bolt (21), and the other end is connected to the lifting frame assembly (3).

4. A double-pallet stacker with adjustable gantry legs according to claim 3, characterized in that: The outer gatepost (11) is provided with a C-shaped gatepost groove, and the inner gate frame (4) is equipped with two inner gate frame rollers on each side of the bottom, and the inner gate frame rollers are installed in the C-shaped gatepost groove.

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