Double-fork arm carrier portal

Abstract

The invention relates to the technical field of forklifts, and discloses a double-fork-arm-carrier gantry which comprises an AGV three-stage gantry body, a lower accessory assembly is arranged in the AGV three-stage gantry body, a hanging chain plate is fixed to the inner side wall of the lower accessory assembly, an upper accessory assembly is arranged at the top of the lower accessory assembly, a short cylinder is arranged between the lower accessory assembly and the upper accessory assembly, and the short cylinder is connected with the AGV three-stage gantry body. A lower front frame assembly is arranged on the side wall of the lower accessory assembly, an upper front frame assembly is movably installed on the inner side wall of the upper accessory assembly, pallet forks are fixed to the side wall of the lower front frame assembly and the side wall of the upper front frame assembly, and supporting plates are symmetrically fixed to the side wall of the lower accessory assembly. The lower front frame assembly is movably installed between the supporting plates, a lower oil-way-free oil cylinder is arranged at the bottom of the lower accessory assembly, and the movable end of the lower oil-way-free oil cylinder is movably connected with the lower front frame assembly. The structure is simple and reliable, and the problem of low working condition operation efficiency is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, in particular to a double-fork frame mast. Background Art

[0002] Due to its special safety requirements and storage operation environment, tobacco has high requirements on the operating capabilities of AGV, especially operating efficiency. For this purpose, a double-fork gantry is designed. Summary of the Invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a double-fork frame mast, which has a simple and reliable structure and solves the problem of low working efficiency.

[0004] The double-fork frame gantry proposed in the present invention includes an AGV three-stage gantry, wherein a lower tool assembly is provided inside the AGV three-stage gantry, a chain plate is fixed to the inner side wall of the lower tool assembly, an upper tool assembly is provided on the top of the lower tool assembly, a short cylinder is provided between the lower tool assembly and the upper tool assembly, a lower front frame assembly is provided on the side wall of the lower tool assembly, an upper front frame assembly is movably mounted on the inner side wall of the upper tool assembly, and forks are fixed to the side walls of the lower front frame assembly and the upper front frame assembly;

[0005] Support plates are symmetrically fixed to the side walls of the lower tool assembly, the lower front frame assembly is movably installed between the support plates, a lower oil-free cylinder is provided at the bottom of the lower tool assembly, a movable end of the lower oil-free cylinder is movably connected to the lower front frame assembly, and an upper oil-free cylinder is provided at the bottom of the upper tool assembly, a movable end of the upper oil-free cylinder is movably connected to the upper front frame assembly;

[0006] A lower mounting plate is fixed on the top of the lower tool assembly, an upper mounting plate is fixed on the top of the upper tool assembly, the short cylinder is fixed between the lower mounting plate and the upper mounting plate, and the side walls of the short cylinder are fixedly connected with a first oil circuit and a second oil circuit, and the first oil circuit and the second oil circuit are fixed to the side walls of the lower tool assembly.

[0007] Preferably, the AGV three-level gantry includes an outer gantry, a middle gantry and an inner gantry. The outer side wall of the middle gantry is symmetrically and movably installed with a plurality of first rollers, and the first rollers are movably sleeved in the steel groove of the inner side wall of the outer gantry. The outer side wall of the inner gantry is symmetrically and movably installed with a plurality of second rollers, and the second rollers are movably sleeved in the steel groove of the inner side wall of the middle gantry.

[0008] Preferably, an inner door chain plate and a sprocket are fixed to the inner side wall of the inner door frame, a chain is sleeved on the surface of the sprocket, and both ends of the chain are respectively fixed between the inner door chain plate and the chain hanging plate.

[0009] Preferably, a first limiting block is symmetrically welded and fixed to the top of the inner door frame.

[0010] Preferably, a second limiting block is welded and fixed to the surface of the lower cross beam column plate of the upper front frame assembly.

[0011] Preferably, the outer side wall of the lower attachment assembly is symmetrically and movably mounted with a plurality of third rollers, and the outer side wall of the upper attachment assembly is symmetrically and movably mounted with a plurality of fourth rollers, and the third rollers and the fourth rollers are both movably mounted in the steel groove of the inner side wall of the inner door frame.

[0012] Preferably, a lower support assembly for mounting the lower oil-free cylinder is fixed to the inner bottom of the lower attachment overall layer, and an upper support assembly for mounting the upper oil-free cylinder is fixed to the inner bottom of the upper attachment overall layer.

[0013] Preferably, a lower piston rod connecting seat is fixed to the side wall of the lower front frame assembly, and the lower piston rod connecting seat is movably connected to the lower oil-free cylinder.

[0014] Preferably, an upper piston rod connecting seat is fixed to the side wall of the upper front frame assembly, and the upper piston rod connecting seat is movably connected to the upper oil-free cylinder.

[0015] Preferably, a reinforcing plate is fixed to the side wall of the subordinate tool assembly.

[0016] Compared with the existing technology, the beneficial technical effects of the present invention are: the double fork frame solution is simple and reliable, can stack two piles of goods at a time, and the operating efficiency is increased by 1 times. It can be expanded to different tonnage types of gantries and working conditions, has strong versatility, and to a certain extent solves the problem of low working efficiency in working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the double fork frame mast proposed in the present invention.

[0018] Figure 2 This is a front view of the connection between the lower attachment assembly and the upper attachment assembly of the double fork frame mast proposed in the present invention.

[0019] Figure 3 This is a right side view of the connection between the lower attachment assembly and the upper attachment assembly of the double fork frame mast proposed by the present invention.

[0020] Figure 4 This is a schematic diagram of the short cylinder oil circuit of the double fork mast proposed in the present invention.

[0021] Figure 5 This is a schematic diagram of the lower tool assembly structure of the double fork frame mast proposed in the present invention.

[0022] Figure 6This is a schematic structural diagram of the upper attachment assembly of the double fork mast proposed in the present invention.

[0023] In the figure: 1. AGV three-level gantry; 2. Lower attachment assembly; 21. Support plate; 22. Lower oil-free cylinder; 23. Lower mounting plate; 24. Third roller; 25. Lower support assembly; 26. Reinforcement plate; 3. Chain plate; 4. Upper attachment assembly; 41. Upper oil-free cylinder; 42. Upper mounting plate; 43. Fourth roller; 44. Upper support assembly; 5. Short cylinder; 51. First oil circuit; 52. Second oil circuit; 6. Lower front frame assembly; 61. Lower piston rod connecting seat; 7. Upper front frame assembly; 71. Upper piston rod connecting seat; 8. First limit block; 9. Second limit block; 10. Fork. DETAILED DESCRIPTION

[0024] Example, see Figure 1-6 , a double fork frame gantry includes an AGV three-level gantry 1, a lower tool assembly 2 is provided inside the AGV three-level gantry 1, a chain plate 3 is fixed to the inner side wall of the lower tool assembly 2, an assembly hole is opened in the middle of the chain plate 3, which is used to be inserted and fixed with the end piece at one end of the chain, an upper tool assembly 4 is provided on the top of the lower tool assembly 2, a short cylinder 5 is provided between the lower tool assembly 2 and the upper tool assembly 4, a lower front frame assembly 6 is provided on the side wall of the lower tool assembly 2, an upper front frame assembly 7 is movably installed on the inner side wall of the upper tool assembly 4, and forks 10 are fixed to the side walls of the lower front frame assembly 6 and the upper front frame assembly 7, which are used to hold goods;

[0025] The side walls of the lower attachment assembly 2 are symmetrically fixed with support plates 21, and the lower front frame assembly 6 is movably installed between the support plates 21, and a pin is inserted at the connection. A lower oil-free cylinder 22 is provided at the bottom of the lower attachment assembly 2, and the moving end of the lower oil-free cylinder 22 is movably connected to the lower front frame assembly 6. The lower oil-free cylinder 22 is used to support the lower front frame assembly 6 from the side, so that the lower front frame assembly 6 always remains vertical to the ground. An upper oil-free cylinder 41 is provided at the bottom of the upper attachment assembly 4, and the moving end of the upper oil-free cylinder 41 is movably connected to the upper front frame assembly 7. The upper oil-free cylinder 41 is used to support the upper front frame assembly 7 from the side, so that the upper front frame assembly 7 always remains vertical to the ground. When the cargo is loaded, the lower oil-free cylinder 22 and the upper oil-free cylinder 41 can be controlled to retract, thereby driving the lower front frame assembly 6 and the upper front frame assembly 7 to deflect 1~3 degrees. , so that the assembled fork 10 is deflected, making it easier to insert into the gap at the bottom of the cargo, and after insertion, the fork 10 is adjusted to reset to achieve loading of the cargo;

[0026] The top of the lower tool assembly 2 is fixed with a lower mounting plate 23, the top of the upper tool assembly 4 is fixed with an upper mounting plate 42, the short cylinder 5 is fixed between the lower mounting plate 23 and the upper mounting plate 42, the cylinder body of the short cylinder 5 is fixed to the lower mounting plate 23, and is threadedly installed with a lower ball nut to achieve fixation, the top of the piston rod of the short cylinder 5 is fixed to the upper mounting plate 42, and is threadedly installed with an upper ball nut to achieve fixation, the side wall of the short cylinder 5 is fixedly connected with the first oil circuit 51 and the second oil circuit 52, the side wall of the short cylinder 5 is provided with a first interface and a second interface, which are fixedly connected to the first oil circuit 51 and the second oil circuit 52 respectively, the first oil circuit 51 and the second oil circuit 52 are fit and fixed on the side wall of the lower tool assembly 2, and the first oil circuit 51 and the second oil circuit 52 move synchronously with the lower tool assembly 2.

[0027] The AGV three-level gantry 1 includes an outer gantry, a middle gantry and an inner gantry. The outer side wall of the middle gantry is symmetrically and movably installed with multiple first rollers, and the first rollers are movably sleeved in the steel groove of the inner side wall of the outer gantry. The outer side wall of the inner gantry is symmetrically and movably installed with multiple second rollers, and the second rollers are movably sleeved in the steel groove of the inner side wall of the middle gantry.

[0028] The inner door chain plate and sprocket are fixed to the inner side wall of the inner door frame. The surface of the sprocket is covered with a chain. The two ends of the chain are fixed between the inner door chain plate and the hanging chain plate 3. Figure 1 A and B in the middle are the fixed position marks at both ends of the chain. The AGV three-level gantry 1 is an existing device. For specific structure, please refer to Figure 1 , also includes basic oil circuit, lifting cylinder, sprocket and chain, basic oil circuit reference Figure 4 At the middle C, a single fork 10 is assembled in the inner gantry of the traditional AGV three-level gantry 1 to realize cargo transfer. The double fork 10-frame gantry removes the traditional single shelf and replaces it with the lower attachment assembly 2 and the upper attachment assembly 4 to realize the assembly of the lower front frame assembly 6 and the upper front frame assembly 7. The rest of the structure retains the traditional gantry structure, and the chain is connected and fixed to the chain plate 3. The original lifting cylinder is used to drive the inner gantry, the lower attachment assembly 2, the upper attachment assembly 4, the short cylinder 5, the lower front frame assembly 6 and the upper front frame assembly 7 to move as a whole, and then the short cylinder 5 alone drives the upper attachment assembly 4, the upper front frame assembly 7, the upper fork 10 and the upper cargo to move up and down to realize independent movement.

[0029] A first limit block 8 is symmetrically welded and fixed on the top of the inner door frame. The height of the inner door frame determines the upper limit of movement of the upper attachment, which is optional and installed during the specific installation.

[0030] A second limiting block 9 is welded and fixed to the surface of the lower crossbeam column plate of the upper front frame assembly 7 .

[0031] The outer side wall of the lower attachment assembly 2 is symmetrically and movably mounted with multiple third rollers 24, and the outer side wall of the upper attachment assembly 4 is symmetrically and movably mounted with multiple fourth rollers 43. The third rollers 24 and the fourth rollers 43 are both movably mounted in the steel groove of the inner side wall of the inner mast. The upper attachment assembly 4, the upper front frame assembly 7, the upper fork 10 and the movement of the upper cargo are independently controlled by the short cylinder 5. When moving, the fourth roller 43 mounted on the side wall of the upper attachment assembly 4 moves in the steel groove of the inner mast and realizes the front and rear limit, and then cooperates with the first limit block 8 and the second limit block 9 to realize the upward limit.

[0032] The inner bottom of the lower attachment layer is fixed with a lower support assembly 25 for installing the lower oil-free cylinder 22, and the connection relationship is a movable connection. The inner bottom of the upper attachment layer is fixed with an upper support assembly 44 for installing the upper oil-free cylinder 41, and the connection relationship is a movable connection.

[0033] A lower piston rod connecting seat 61 is fixed to the side wall of the lower front frame assembly 6, and the lower piston rod connecting seat 61 is movably connected to the lower oil-free cylinder 22. A pin is inserted into the connection, and limit screws are threadedly installed at both ends of the pin.

[0034] An upper piston rod connecting seat 71 is fixed to the side wall of the upper front frame assembly 7. The upper piston rod connecting seat 71 is movably connected to the upper oil-free cylinder 41. A pin is inserted into the connection, and limit screws are threadedly installed at both ends of the pin.

[0035] A reinforcing plate 26 is fixed to the side wall of the lower tool assembly 2. The lower tool assembly 2 is one of the main pressure-bearing structures. The structural strength is improved by installing the reinforcing plate 26 to transport heavier goods.

[0036] When using this device, first use the AGV three-level gantry 1 to bring the entire attachment to a suitable height position, and the lifting cylinder drives the inner gantry to move up and down. Since the inner gantry and the lower attachment assembly 2 are fixed by a chain, all lower attachment assemblies 2 move synchronously with the inner gantry. After completing the position adjustment of the lower attachment, control the piston rod of the short cylinder 5 to extend and retract to drive the upper attachment to move independently in the steel groove of the inner gantry. The movement of the upper attachment synchronously drives the upper front frame assembly 7 and the upper fork 10.

Claims

1. Double fork mast, including AGV three-stage mast, characterized by: The interior of the AGV three-level gantry is provided with a lower tool assembly, the inner side wall of the lower tool assembly is fixed with a hanging chain plate, the top of the lower tool assembly is provided with an upper tool assembly, a short cylinder is provided between the lower tool assembly and the upper tool assembly, the side wall of the lower tool assembly is provided with a lower front frame assembly, the inner side wall of the upper tool assembly is movably mounted with an upper front frame assembly, and the side walls of the lower front frame assembly and the upper front frame assembly are both fixed with forks; Support plates are symmetrically fixed to the side walls of the lower tool assembly, the lower front frame assembly is movably installed between the support plates, a lower oil-free cylinder is provided at the bottom of the lower tool assembly, a movable end of the lower oil-free cylinder is movably connected to the lower front frame assembly, and an upper oil-free cylinder is provided at the bottom of the upper tool assembly, a movable end of the upper oil-free cylinder is movably connected to the upper front frame assembly; A lower mounting plate is fixed on the top of the lower tool assembly, an upper mounting plate is fixed on the top of the upper tool assembly, the short cylinder is fixed between the lower mounting plate and the upper mounting plate, and the side walls of the short cylinder are fixedly connected with a first oil circuit and a second oil circuit, and the first oil circuit and the second oil circuit are fixed to the side walls of the lower tool assembly.

2. The double fork mast according to claim 1, characterized in that: The AGV three-level gantry includes an outer gantry, a middle gantry and an inner gantry. The outer side wall of the middle gantry is symmetrically and movably installed with multiple first rollers, and the first rollers are movably sleeved in the steel groove of the inner side wall of the outer gantry. The outer side wall of the inner gantry is symmetrically and movably installed with multiple second rollers, and the second rollers are movably sleeved in the steel groove of the inner side wall of the middle gantry.

3. The double fork mast according to claim 2, characterized in that: An inner door chain plate and a sprocket are fixed to the inner side wall of the inner door frame, a chain is sleeved on the surface of the sprocket, and two ends of the chain are respectively fixed between the inner door chain plate and the chain hanging plate.

4. The double fork mast according to claim 2, characterized in that: A first limiting block is symmetrically welded and fixed to the top of the inner door frame.

5. The double fork mast according to claim 1, characterized in that: A second limiting block is welded and fixed on the surface of the lower cross beam column plate of the upper front frame assembly.

6. The double fork mast according to claim 1, characterized in that: The outer side wall of the lower attachment assembly is symmetrically and movably mounted with a plurality of third rollers, and the outer side wall of the upper attachment assembly is symmetrically and movably mounted with a plurality of fourth rollers. The third rollers and the fourth rollers are both movably mounted in the steel groove of the inner side wall of the inner door frame.

7. The double fork mast according to claim 1, characterized in that: A lower support assembly for mounting the lower oil-free cylinder is fixed to the inner bottom of the lower attachment overall layer, and an upper support assembly for mounting the upper oil-free cylinder is fixed to the inner bottom of the upper attachment overall layer.

8. The double fork mast according to claim 1, characterized in that: A lower piston rod connecting seat is fixed to the side wall of the lower front frame assembly, and the lower piston rod connecting seat is movably connected to the lower oil cylinder without oil path.

9. The double fork mast according to claim 1, characterized in that: An upper piston rod connecting seat is fixed to the side wall of the upper front frame assembly, and the upper piston rod connecting seat is movably connected to the upper oil-free cylinder.

10. The double fork mast according to claim 1, characterized in that: A reinforcing plate is fixed to the side wall of the lower tool assembly.

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