Forklift for double-sided tray transportation and operation method thereof

Abstract

The invention relates to the field of forklifts, and provides a forklift for double-sided tray transportation and an operation method thereof.The forklift comprises a frame and a pallet fork, the frame is connected with a lifting assembly and a driving assembly, the pallet fork is fixedly connected with a top plate, and the top plate is fixedly connected with the lifting assembly; the driving assembly comprises a driving wheel and a driving shaft which are connected with each other, and the driving shaft is rotationally connected to the frame; a seat body is fixedly connected to the frame, a cylinder mounting plate is fixedly connected to the seat body, the lifting assembly is fixedly connected to the cylinder mounting plate, and a heat dissipation assembly is arranged on the seat body; a seat cavity is formed in the seat body, a plate cavity is formed in the cylinder mounting plate, two or more cooling channels are formed in the lifting assembly, and the driving shaft penetrates through the seat cavity; the heat dissipation assembly comprises a first straight gear, a lifting plate, a second permanent magnet, a third permanent magnet, an automatic take-up device, a transmission wheel, a first worm gear, a bearing base, an L-shaped rod, a thermal expansion piece, a worm, a second worm gear and fan blades. The lifting assembly can be prevented from being damaged due to overheating.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and in particular to a forklift for transporting double-sided pallets and an operating method thereof. Background Art

[0002] Currently, the pallets used to place goods on the market are Sichuan-shaped pallets and double-sided pallets. Because the fork slot of the double-sided pallet is in the middle, the traditional transport truck has load wheels on the front side and cannot be used, so the transportation can only be completed by a forklift.

[0003] At present, the lifting components of forklifts are under heavy load and easily generate a lot of heat. If the heat cannot be dissipated in time, it will easily affect the use of the lifting components and reduce the life of the lifting components. Summary of the invention

[0004] In view of the above technical problems, the present invention aims to provide a forklift for double-sided pallet transportation and an operation method thereof. To solve the above technical problems, the present invention adopts the following technical solutions: A forklift for transporting double-sided pallets comprises a frame and a fork, wherein a lifting assembly and a driving assembly are connected to the frame, a top plate is fixedly connected to the fork, and the top plate is fixedly connected to the lifting assembly; The driving assembly includes a driving wheel and a driving shaft connected to each other, and the driving shaft is rotatably connected to the frame; The frame is fixedly connected with a seat body, a cylinder mounting plate is fixedly connected with the seat body, the lifting assembly is fixedly connected with the cylinder mounting plate, and a heat dissipation assembly is provided on the seat body; The seat body is provided with a seat cavity, the cylinder mounting plate is provided with a plate cavity, the lifting assembly is provided with two or more cooling channels, and the drive shaft passes through the seat cavity; The heat dissipation assembly includes a first straight gear, a lifting plate, a second permanent magnet, a third permanent magnet, an automatic wire take-up device, a transmission wheel, a first worm gear, a supporting seat, an L-shaped rod, a thermal expansion member, a worm, a second worm gear and a fan blade; The first spur gear is fixedly connected to the driving shaft, the lifting plate is slidably connected to the inner wall of the seat cavity, the lifting plate is rotatably connected to the second spur gear, the second spur gear is fixedly connected to a receiving roller, the lifting plate is fixedly connected to a reducer, the input shaft of the reducer is fixedly connected to a third spur gear, the third spur gear and the first spur gear are respectively meshed with the second spur gear, the output shaft of the reducer is fixedly connected to a turntable, the turntable is fixedly connected to a first permanent magnet, the second permanent magnet, the third permanent magnet, the automatic wire take-up device, and the supporting seat are all fixedly connected to the inner wall of the seat cavity, the automatic wire take-up device is movably connected to a power transmission line, the power transmission line is wound around the transmission wheel, and the number of winding turns is One circle or more, the force transmission line and the supporting seat are against each other, one end of the force transmission line is fixed to the storage roller, the transmission wheel is rotatably connected to the inner wall of the seat cavity, the first worm gear is fixed to the transmission wheel, the L-shaped rod is slidably connected to the seat body, the lower end of the L-shaped rod and the force transmission line are against each other, a connecting piece is fixed to the L-shaped rod, the connecting piece is connected to the outer wall of the seat body through an elastic piece, the L-shaped rod is fixed to the thermal expansion piece, the thermal expansion piece is fixed to the lifting assembly, the inner wall of the plate cavity is rotatably connected to a worm, the worm extends into the seat cavity, the worm is meshed with the first worm gear, the second worm gear is rotatably connected to the inner wall of the plate cavity, the fan blade is fixed to the second worm gear, and the second worm gear is meshed with the worm.

[0005] Preferably, the fork is fixed with two legs, the legs are movably connected with a handling assembly, the fork is rotatably connected with two or more first rollers, the frame is provided with a guide groove, the first rollers are rotatably connected to the guide groove, and the frame is connected with a multi-section guide block; Preferably, the transport assembly comprises a rear swivel seat, a pull rod and a wheel frame, the rear swivel seat and the wheel frame are both rotatably connected to the pull rod, the fork is provided with a first through hole and a second through hole, the rear swivel seat is provided with a third through hole, the wheel frame is provided with a fourth through hole and a seventh through hole, the pull rod is provided with a fifth through hole, and the rear swivel seat is provided with a sixth through hole; The third through hole is rotatably connected to the first through hole via a rotating shaft, the fourth through hole is rotatably connected to the second through hole via a rotating shaft, the fifth through hole is rotatably connected to the sixth through hole via a rotating shaft, and the seventh through hole is rotatably connected to the fourth through hole via a rotating shaft; The rear swivel seat is rotatably connected with a second roller and a supporting wheel, the wheel frame is rotatably connected with a load wheel, and the second roller is rollingly connected to the multi-section guide block.

[0006] Preferably, a second limiting block and a first limiting block are fixedly connected to the inner wall of the seat cavity.

[0007] Preferably, a force-enhancing component is connected to the frame, and the force-enhancing component is one of a spring, an oil cylinder, an electric cylinder or a pneumatic cylinder.

[0008] Preferably, the lifting assembly is one of an oil cylinder, an electric cylinder or a pneumatic cylinder.

[0009] Preferably, the legs are connected via a tension assembly and a pull rod.

[0010] Preferably, the tension component is a spring.

[0011] Preferably, the load wheel is rotatably connected to the buffer assembly, and the buffer assembly is slidably connected to the wheel frame.

[0012] Preferably, there is one or more load wheels.

[0013] A method for operating a forklift for double-sided pallet transportation comprises the following steps: S1: The forklift moves to the side of the pallet by rotating the driving wheel, and the forks are in a high position. At this time, the load wheel and the driving wheel touch the ground, and the supporting wheel is suspended in the air; S2: Prepare to pick up the pallet. The fork first drops to the lowest position. At this time, the driving wheel and the supporting wheel touch the ground, and the load wheel is suspended in the air. S3: Fork in, the forklift moves left, the outriggers are inserted into the pallet, and the forks move left until the forks touch the pallet and then stop moving; S4: The fork is raised until the load wheel, support wheel and drive wheel touch the ground at the same time. At this time, the upper surface of the outrigger has not yet touched the inner wall of the pallet, leaving a large gap; S5: The fork continues to rise. At this time, the load wheel and the drive wheel touch the ground, and the support wheel slowly leaves the ground and continues to retract upward. During the lifting process of the fork, the upper surface of the outrigger will contact the inner wall of the pallet, and then the outrigger will rise with the pallet until the fork is raised to the highest position, and then start to transport the goods.

[0014] The present invention has the following beneficial effects: The power transmission line is automatically retracted when the forklift moves, and the retraction will stop automatically after it is retracted to a certain length. The power transmission line will be clamped. When the lifting component generates heat during work, the L-rod and the supporting seat will automatically release the clamping of the power transmission line, and the power transmission line will be recovered through the automatic recovery force of the automatic wire retractor, thereby driving the fan blades to rotate and generate wind. With the design of two or more cooling channels, the lifting component can be cooled by air to prevent damage caused by overheating of the lifting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of S1 in a forklift operation method for double-sided pallet transportation of the present invention; Figure 2 It is a structural schematic diagram of S2 in a forklift operation method for double-sided pallet transportation of the present invention; Figure 3 It is a structural schematic diagram of S3 in a forklift operation method for double-sided pallet transportation of the present invention; Figure 4 It is a structural schematic diagram of S4 in a forklift operation method for double-sided pallet transportation of the present invention; Figure 5 It is a structural schematic diagram of S5 in a forklift operation method for double-sided pallet transportation of the present invention; Figure 6 It is a structural schematic diagram of a frame in a forklift used for double-sided pallet transportation of the present invention; Figure 7 It is a schematic structural diagram of a fork in a forklift used for double-sided pallet transportation according to the present invention; Figure 8 It is a structural schematic diagram of a handling assembly in a forklift for transporting double-sided pallets according to the present invention; Fig. 9 The present invention Figure 8 A magnified view of the mid-posterior transposition; Fig.10 It is a schematic structural diagram of a middle leg of a fork in a forklift used for double-sided pallet transportation according to the present invention; Fig.11 It is a structural schematic diagram of a heat dissipation assembly in a forklift for transporting double-sided pallets according to the present invention; Fig.12 The present invention Fig.11 The enlarged view of point A in the middle; Fig.13 The present invention Fig.11 A schematic diagram of the structure of the turntable and the first permanent magnet in the heat dissipation assembly; Fig.14 The present invention Fig.11 Top view of the reducer.

[0017] Figure numerals: 1, frame; 2, fork; 3, lifting assembly; 4, driving assembly; 5, handling assembly; 6, guide groove; 7, first roller; 8, top plate; 9, outrigger; 10, first through hole; 11, second through hole; 12, second roller; 13, support wheel; 14, load wheel; 15, rear swivel seat; 16, pull rod; 17, wheel frame; 18, third through hole; 19, fourth through hole; 20, fifth through hole; 21, sixth through hole; 22, seventh through hole; 23, multi-section guide block; 24, force amplification assembly; 25, driving wheel; 26, seat body; 27, cylinder mounting plate; 28, seat cavity; 29, driving shaft; 30, first straight tooth Wheel; 31, lifting plate; 32, second spur gear; 33, storage roller; 34, third spur gear; 35, reducer; 36, input shaft; 37, output shaft; 38, turntable; 39, first permanent magnet; 40, second permanent magnet; 41, third permanent magnet; 42, first limit block; 43, second limit block; 44, power transmission line; 45, automatic wire take-up device; 46, transmission wheel; 47, first worm gear; 48, supporting seat; 49, L-shaped rod; 50, connecting piece; 51, elastic member; 52, thermal expansion member; 53, plate cavity; 54, worm; 55, second worm gear; 56, fan blade; 57, cooling channel; 58, tension component. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-10 As shown, a forklift for double-sided pallet transportation includes a frame 1 and a fork 2, the frame 1 is connected to a lifting assembly 3 and a driving assembly 4, the fork 2 is fixedly connected to a top plate 8, and the top plate 8 is fixedly connected to the lifting assembly 3; The driving assembly 4 includes a driving wheel 25 and a driving shaft 29 connected to each other, and the driving shaft 29 is rotatably connected to the frame 1; The frame 1 is fixedly connected with a seat body 26, a cylinder mounting plate 27 is fixedly connected with the seat body 26, the lifting assembly 3 is fixedly connected with the cylinder mounting plate 27, and a heat dissipation assembly is provided on the seat body 26; The seat body 26 is provided with a seat cavity 28, the cylinder mounting plate 27 is provided with a plate cavity 53, the lifting assembly 3 is provided with two or more cooling channels 57, and the drive shaft 29 passes through the seat cavity 28; The heat dissipation assembly includes a first spur gear 30, a lifting plate 31, a second permanent magnet 40, a third permanent magnet 41, an automatic wire take-up device 45, a transmission wheel 46, a first worm gear 47, a support seat 48, an L-shaped rod 49, a thermal expansion member 52, a worm 54, a second worm gear 55 and a fan blade 56; The first spur gear 30 is fixedly connected to the driving shaft 29, the lifting plate 31 is slidably connected to the inner wall of the seat cavity 28, the lifting plate 31 is rotatably connected with the second spur gear 32, the second spur gear 32 is fixedly connected with a receiving roller 33, the lifting plate 31 is fixedly connected with a reducer 35, the input shaft 36 of the reducer 35 is fixedly connected with a third spur gear 34, the third spur gear 34 and the first spur gear 30 are respectively meshed with the second spur gear 32, the output shaft 37 of the reducer 35 is fixedly connected with a turntable 38, the turntable 38 is fixedly connected with a first permanent magnet 39, the second permanent magnet 40, the third permanent magnet 41, the automatic wire take-up device 45, and the supporting seat 48 are all fixedly connected to the inner wall of the seat cavity 28, the automatic wire take-up device 45 is movably connected with a power transmission line 44, the power transmission line 44 is wound around the transmission wheel 46 and the number of windings is one circle and more. As described above, the force transmission line 44 and the supporting seat 48 are against each other, one end of the force transmission line 44 is fixedly connected to the storage roller 33, the transmission wheel 46 is rotatably connected to the inner wall of the seat cavity 28, the first worm gear 47 is fixedly connected to the transmission wheel 46, the L-shaped rod 49 is slidably connected to the seat body 26, the lower end of the L-shaped rod 49 and the force transmission line 44 are against each other, and a connecting piece 50 is fixedly connected to the L-shaped rod 49, and the connecting piece 50 is connected to the outer wall of the seat body 26 through an elastic member 51, the L-shaped rod 49 is fixedly connected to the thermal expansion member 52, and the thermal expansion member 52 is fixedly connected to the lifting assembly 3, the inner wall of the plate cavity 53 is rotatably connected to the worm 54, the worm 54 extends into the seat cavity 28, the worm 54 is meshed with the first worm gear 47, the second worm gear 55 is rotatably connected to the inner wall of the plate cavity 53, the fan blade 56 is fixedly connected to the second worm gear 55, and the second worm gear 55 is meshed with the worm 54.

[0022] According to an optional embodiment of the present invention, the fork 2 is fixed with two legs 9, the legs 9 are movably connected with a handling assembly 5, the fork 2 is rotatably connected with two or more first rollers 7, the frame 1 is provided with a guide groove 6, the first roller 7 is rollingly connected to the guide groove 6, and the frame 1 is connected with a multi-section guide block 23; According to an optional embodiment of the present invention, the transport assembly 5 includes a rear swivel seat 15, a pull rod 16 and a wheel frame 17, the rear swivel seat 15 and the wheel frame 17 are both rotatably connected to the pull rod 16, the fork 2 is provided with a first through hole 10 and a second through hole 11, the rear swivel seat 15 is provided with a third through hole 18, the wheel frame 17 is provided with a fourth through hole 19 and a seventh through hole 22, the pull rod 16 is provided with a fifth through hole 20, and the rear swivel seat 15 is provided with a sixth through hole 21; The third through hole 18 is rotatably connected to the first through hole 10 via a rotating shaft, the fourth through hole 19 is rotatably connected to the second through hole 11 via a rotating shaft, the fifth through hole 20 is rotatably connected to the sixth through hole 21 via a rotating shaft, and the seventh through hole 22 is rotatably connected to the fourth through hole 19 via a rotating shaft; The second roller 12 and the support wheel 13 are rotatably connected to the rear swivel seat 15 , the load wheel 14 is rotatably connected to the wheel frame 17 , and the second roller 12 is rollingly connected to the multi-section guide block 23 .

[0023] According to an optional implementation of the present invention, a second limiting block 43 and a first limiting block 42 are fixedly connected to the inner wall of the seat cavity 28 .

[0024] According to an optional implementation of the present invention, a force-enhancing component 24 is connected to the frame 1, and the force-enhancing component 24 is one of a spring, an oil cylinder, an electric cylinder or a pneumatic cylinder.

[0025] According to an optional embodiment of the present invention, the lifting component 3 is one of an oil cylinder, an electric cylinder or a pneumatic cylinder.

[0026] According to an optional embodiment of the present invention, the supporting leg 9 is connected to the pull rod 16 via a tension assembly 58 .

[0027] According to an optional implementation of the present invention, the tension component 58 is a spring.

[0028] According to an optional implementation of the present invention, the load wheel 14 is rotatably connected to a buffer assembly, and the buffer assembly is slidably connected to the wheel frame 17 .

[0029] According to an optional embodiment of the present invention, there is one or more load wheels 14 .

[0030] A method for operating a forklift for double-sided pallet transportation comprises the following steps: S1: The forklift moves to the side of the pallet by rotating the driving wheel 25, and the fork 2 is in a high position. At this time, the load wheel 14 and the driving wheel 25 touch the ground, and the support wheel 13 is suspended in the air; S2: Prepare to pick up the pallet. The fork 2 first descends to the lowest position. At this time, the driving wheel 25 and the supporting wheel 13 touch the ground, and the load wheel 14 is suspended in the air. S3: Fork entry, the forklift moves left, the outrigger 9 is inserted into the pallet, and the fork 2 moves left until the fork 2 touches the pallet and then stops moving; S4: The fork 2 is raised until the load wheel 14, the support wheel 13 and the drive wheel 25 touch the ground at the same time. At this time, the upper surface of the leg 9 has not yet touched the inner wall of the pallet, leaving a large gap; S5: The fork 2 continues to rise. At this time, the load wheel 14 and the drive wheel 25 touch the ground, and the support wheel 13 slowly leaves the ground and continues to retract upward. During the lifting process of the fork 2, the upper surface of the leg 9 will contact the inner wall of the pallet, and then the leg 9 will rise with the pallet until the fork 2 is raised to the highest position, and then start to transport the goods.

[0031] Currently, the pallets used to place goods on the market are cross-shaped pallets and double-sided pallets. Because the fork slot of the double-sided pallet is located in the middle, the load wheels on the front side of the traditional transport truck cannot be used, and the forklift can only be used to complete the transportation. The current forklift does not have load wheels and cannot effectively support the forklift, resulting in poor stability of the forklift, and the load wheels cannot be forked into the double-sided pallet.

[0032] Working principle of fork-into-pallet: lifting assembly 3 is used to control the lifting of fork 2.

[0033] The driving assembly 4 is used to control the forward and backward movement and turning of the forklift.

[0034] When the fork 2 is lifted, it drives the first through hole 10 to rise vertically synchronously. The first through hole 10 is connected to the third through hole 18 by a rotating shaft. The third through hole 18 will also rise vertically synchronously with the fork 2. The third through hole 18 and the sixth through hole 21 are in the same part. The fifth through hole 20 and the sixth through hole 21 are connected by a rotating shaft. Therefore, the fifth through hole 20 will also rise synchronously. The fifth through hole 20 is not lifted vertically. The fifth through hole 20 and the second roller 12 are in the same part. The lifting movement of the fifth through hole 20 will drive the second roller 12 to move upward. Since the second roller 12 is connected to the multi-stage guide block 23 in a rolling manner, the different slopes of the multi-stage guide block 23 can control a position state of the second roller 12 when it is lifted.

[0035] The sixth through hole 21, the third through hole 18 and the support wheel 13 form a triangular structure. The position of the third through hole 18 is limited by the lifting assembly 3, and the position of the sixth through hole 21 is limited by the multi-section guide block 23. After the combined movement of the two, the position state of the support wheel 13 in each time period can be controlled, so as to provide support for the load wheel 14, the support wheel 13 and the second roller 12 to touch the ground at the same time.

[0036] When the first roller 7 moves upward on the multi-stage guide block 23, it will push the pull rod 16 forward, the seventh through hole 22 will rotate with the fourth through hole 19 as the rotation center, and the other end of the wheel frame 17 will also swing with the fourth through hole 19 as the rotation center, thereby controlling the movement of the load wheel 14.

[0037] During the lowering process of the fork 2, the tension assembly 58 serves as an auxiliary component to enable the pull rod 16 to be recovered more smoothly.

[0038] Working principle of the heat dissipation assembly: When the driving wheel 25 and the driving shaft 29 rotate, the first spur gear 30 is driven to rotate, and the first spur gear 30 drives the second spur gear 32, the receiving roller 33, and the third spur gear 34 to rotate. The receiving roller 33 receives the power transmission line 44, and the automatic wire take-up device 45 releases the power transmission line 44. The third spur gear 34 slows down the output shaft 37, the turntable 38, and the first permanent magnet 39 through the deceleration of the reducer 35. After the third spur gear 34 rotates several times, the receiving roller 33 receives a sufficient length of the power transmission line 44, and the first permanent magnet 39 moves from the lowest point to the highest point. At this time, the third permanent magnet 41 magnetically attracts the first permanent magnet 39, thereby moving the lifting plate 31, the third spur gear 34, and the second spur gear 32 upward until the lifting plate 31 and the second limit block 43 are abutted against each other, and the second spur gear 32 is disengaged from the first spur gear 30. The driving wheel 25 continues to rotate and will not drive the collection roller 33 to rotate, thereby preventing damage to the automatic wire take-up device 45. As the L-shaped rod 49 is pressed downward by the elastic force of the elastic member 51, the pressure of the L-shaped rod 49 on the supporting seat 48 is used to clamp the power transmission line 44, and the transmission wheel 46 will not retract the power transmission line 44 temporarily.

[0039] The lifting assembly 3 generates heat during operation, so that the lifting assembly 3 generates heat, and the heat of the lifting assembly 3 is transferred to the heat expansion member 52, so that the heat expansion member 52 expands due to the heat, and the expansion end of the heat expansion member 52 is fixedly connected to the L-shaped rod 49, thereby driving the L-shaped rod 49 to move upward, and the L-shaped rod 49 is separated from the power transmission line 44, thereby releasing the clamping of the L-shaped rod 49 and the supporting seat 48 on the power transmission line 44, and the automatic wire take-up device 45 automatically recycles the power transmission line 44, thereby driving the transmission wheel 46, the first worm gear 47, the worm 54, the second worm gear 55, and the fan blade 56 to rotate rapidly, and the fan blade 56 generates Wind is generated and blown into the cooling channel 57 to take away the heat in the lifting component 3, completing the heat dissipation operation. When the automatic wire take-up device 45 retracts the power transmission line 44, the second spur gear 32 reverses, thereby reversing the third spur gear 34, the turntable 38, and the first permanent magnet 39. After the first permanent magnet 39 moves to the lowest point, the second permanent magnet 40 magnetically adsorbs the first permanent magnet 39, thereby causing the lifting plate 31 to move down and abut against the first limit block 42, and the second spur gear 32 meshes with the first spur gear 30 again. The next time the driving wheel 25 rotates, the retracting roller 33 can retract the power transmission line 44.

[0040] The present invention can achieve effective support without affecting the forklift through the movable cooperation between the support wheel 13 and the load wheel 14 before, during and after the forklift is engaged, thereby preventing the forklift from tipping over; the power transmission line 44 is automatically stored when the forklift moves, and the storage will automatically stop after it is stored to a certain length, and the power transmission line 44 will be clamped. When the lifting component 3 generates heat during operation, the L-shaped rod 49 and the supporting seat 48 will automatically release the clamping of the power transmission line 44, and the power transmission line 44 will be recovered through the automatic recovery force of the automatic wire retractor 45, thereby driving the fan blades 56 to rotate and generate wind. In conjunction with the design of two or more cooling channels 57, the lifting component 3 is cooled by air to prevent the lifting component 3 from being damaged due to overheating.

[0041] The components, modules, mechanisms and devices not described in detail in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A forklift for double-sided pallet transportation, characterized in that: The vehicle comprises a frame (1) and a fork (2), wherein a lifting assembly (3) and a driving assembly (4) are connected to the frame (1), a top plate (8) is fixedly connected to the fork (2), and the top plate (8) and the lifting assembly (3) are fixedly connected; the driving assembly (4) comprises a driving wheel (25) and a driving shaft (29) which are connected to each other, and the driving shaft (29) is rotatably connected to the frame (1); a seat body (26) is fixedly connected to the frame (1), a cylinder mounting plate (27) is fixedly connected to the seat body (26), the lifting assembly (3) is fixedly connected to the cylinder mounting plate (27), and a heat dissipation assembly is provided on the seat body (26); a seat cavity (28) is provided on the seat body (26), a plate cavity (53) is provided in the cylinder mounting plate (27), two or more cooling channels (57) are provided on the lifting assembly (3), and the driving shaft (29) passes through the seat cavity (28); The heat dissipation assembly comprises a first spur gear (30), a lifting plate (31), a second permanent magnet (40), a third permanent magnet (41), an automatic wire take-up device (45), a transmission wheel (46), a first worm gear (47), a supporting seat (48), an L-shaped rod (49), a thermal expansion member (52), a worm gear (54), a second worm gear (55) and a fan blade (56), wherein the first spur gear (30) is fixedly connected to the driving shaft (29), the lifting plate (31) is slidably connected to the inner wall of the seat cavity (28), the lifting plate (31) is rotatably connected to the second spur gear (32), and the first worm gear (47) is fixedly connected to the driving shaft (29 ...worm gear (32), and the first worm gear (47) is fixedly connected to the driving shaft (29), the lifting plate (31) is rotatably connected to the second worm gear (32), and the first worm gear (47) is fixedly connected to the driving shaft (29), the lifting plate (31) is rotatably connected to the second worm gear (32), and the first worm gear (47) is fixedly connected to the driving shaft (29), and the first worm gear (47) is fixedly connected to the driving shaft (29). A receiving roller (33) is fixedly connected to the second spur gear (32), a reducer (35) is fixedly connected to the lifting plate (31), a third spur gear (34) is fixedly connected to the input shaft (36) of the reducer (35), the third spur gear (34) and the first spur gear (30) are respectively meshed with the second spur gear (32), a rotating disk (38) is fixedly connected to the output shaft (37) of the reducer (35), a first permanent magnet (39) is fixedly connected to the rotating disk (38), and the second permanent magnet (40), the third permanent magnet (41), the automatic wire take-up device (45), and the supporting seat (48) are all fixedly connected to the seat The inner wall of the cavity (28), the automatic wire take-up device (45) is movably connected with a power transmission line (44), the power transmission line (44) is wound on the transmission wheel (46) and the number of winding turns is one turn or more, the power transmission line (44) and the supporting seat (48) are against each other, one end of the power transmission line (44) is fixedly connected to the storage roller (33), the transmission wheel (46) is rotatably connected to the inner wall of the seat cavity (28), the first worm gear (47) is fixedly connected to the transmission wheel (46), the L-shaped rod (49) is slidably connected to the seat body (26), the lower end of the L-shaped rod (49) is against the power transmission line (44), and the L-shaped rod (49) is fixedly connected to the inner wall of the seat cavity (28). A connecting piece (50) is connected, the connecting piece (50) is connected to the outer wall of the seat body (26) through an elastic member (51), the L-shaped rod (49) and the thermal expansion member (52) are fixedly connected, the thermal expansion member (52) is fixedly connected to the lifting assembly (3), the inner wall of the plate cavity (53) is rotatably connected to a worm (54), the worm (54) extends into the seat cavity (28), the worm (54) is meshed with the first worm gear (47), the second worm gear (55) is rotatably connected to the inner wall of the plate cavity (53), the fan blade (56) is fixedly connected to the second worm gear (55), and the second worm gear (55) and the worm (54) are meshed.

2. A forklift for double-sided pallet transportation according to claim 1, characterized in that: The fork (2) has two legs (9) fixedly connected to it, the legs (9) are movably connected to a transport assembly (5), the fork (2) is rotatably connected to two or more first rollers (7), the frame (1) is provided with a guide groove (6), the first rollers (7) are rotatably connected to the guide groove (6), and the frame (1) is connected to a multi-section guide block (23).

3. A forklift for double-sided pallet transportation according to claim 2, characterized in that: The transport assembly (5) comprises a rear swivel seat (15), a pull rod (16) and a wheel frame (17); the rear swivel seat (15) and the wheel frame (17) are both rotatably connected to the pull rod (16); the fork (2) is provided with a first through hole (10) and a second through hole (11); the rear swivel seat (15) is provided with a third through hole (18); the wheel frame (17) is provided with a fourth through hole (19) and a seventh through hole (22); the pull rod (16) is provided with a fifth through hole (20); and the rear swivel seat (15) is provided with a sixth through hole (21); The third through hole (18) is rotatably connected to the first through hole (10) via a rotating shaft, the fourth through hole (19) is rotatably connected to the second through hole (11) via a rotating shaft, the fifth through hole (20) is rotatably connected to the sixth through hole (21) via a rotating shaft, and the seventh through hole (22) is rotatably connected to the fourth through hole (19) via a rotating shaft; The rear rotating seat (15) is rotatably connected to a second roller (12) and a supporting wheel (13), the wheel frame (17) is rotatably connected to a load wheel (14), and the second roller (12) is rollingly connected to the multi-section guide block (23).

4. A forklift for double-sided pallet transportation according to claim 3, characterized in that: A second limiting block (43) and a first limiting block (42) are fixedly connected to the inner wall of the seat cavity (28).

5. A forklift for double-sided pallet transportation according to claim 4, characterized in that: The vehicle frame (1) is connected to a force-enhancing component (24), which is one of a spring, an oil cylinder, an electric cylinder or a pneumatic cylinder.

6. A forklift for double-sided pallet transportation according to claim 5, characterized in that: The lifting component (3) is one of an oil cylinder, an electric cylinder or a pneumatic cylinder.

7. A forklift for double-sided pallet transportation according to claim 6, characterized in that: The supporting legs (9) are connected via a tension assembly (58) and a pull rod (16).

8. A forklift for double-sided pallet transportation according to claim 7, characterized in that: The tension component (58) is a spring.

9. A forklift for double-sided pallet transportation according to claim 8, characterized in that: The load wheel (14) is rotatably connected to the buffer assembly, and the buffer assembly is slidably connected to the wheel frame (17).

10. A method for operating a forklift for double-sided pallet transportation, characterized in that: The forklift for double-sided pallet transportation according to any one of claims 1 to 9 comprises the following steps: S1: The forklift moves to the side of the pallet by rotating the driving wheel (25), and the fork (2) is in a high position. At this time, the load wheel (14) and the driving wheel (25) are in contact with the ground, and the support wheel (13) is suspended in the air; S2: Prepare to pick up the pallet. The fork (2) first descends to the lowest position. At this time, the driving wheel (25) and the supporting wheel (13) touch the ground, and the load wheel (14) is suspended in the air. S3: Fork entry, the forklift moves left, the outrigger (9) is inserted into the pallet, and the fork (2) moves left until the fork (2) touches the pallet and stops moving; S4: the fork (2) is raised until the load wheel (14), the support wheel (13), and the drive wheel (25) touch the ground at the same time. At this time, the upper surface of the leg (9) has not yet touched the inner wall of the pallet, leaving a large gap; S5: The fork (2) continues to rise. At this time, the load wheel (14) and the drive wheel (25) touch the ground, and the support wheel (13) slowly leaves the ground and continues to retract upward. During the lifting process of the fork (2), the upper surface of the leg (9) will contact the inner wall of the pallet. Then, the leg (9) will rise together with the pallet until the fork (2) is raised to the highest position, and then the cargo will start to be transported.

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