Flat plate type loading and unloading machine applied to loading and unloading of various goods

Abstract

The flat plate type loading and unloading machine comprises a machine frame (1), a cargo carrying platform (2) is arranged on the upper end face of the machine frame (1), and a driving assembly used for pushing the cargo carrying platform (2) is arranged in the machine frame (1); a goods pushing device (3) used for pushing goods to move is arranged on the upper end face of the goods carrying platform (2). The loading and unloading device has the advantages of being simple in structure, convenient to operate and low in loading and unloading cost, goods can be rapidly and conveniently transferred into a transport tool, the loading and unloading efficiency is improved, and the loading and unloading cost is reduced; meanwhile, large-batch goods can be loaded and unloaded at a time, and manpower and time are saved.

Description

Technical Field

[0001] The present invention relates to a loading and unloading machine for goods, in particular to a flatbed loading and unloading machine used for loading and unloading various goods. Background Art

[0002] In the traditional method of loading and unloading cargo in a carriage, people usually use manpower or forklifts to load the cargo into the rear of the carriage, and then move the cargo piece by piece into the deep part of the carriage by manpower. Similarly, when unloading, it is also carried out by manpower and forklifts. This method of loading and unloading cargo not only has a low utilization rate of the packaging, but also has low loading and unloading efficiency. When encountering various types of cargo, various types of cranes or other machinery are required for loading and unloading, and the top cover or side panels of the carriage need to be opened for loading and unloading, which is time-consuming and labor-intensive, with high loading and unloading costs, and it is impossible to achieve loading and unloading of cargo in a short time and efficiently.

[0003] In CN113771722A, an invention patent application entitled "A self-loading and unloading flatbed electric locomotive for factory area transportation" is disclosed, which includes a body, a dump mechanism, a steering mechanism and a rear drive mechanism; the dump mechanism is installed on the top of the body; the dump mechanism includes a column and a cross arm; the column is installed on the top of the body, and the column can rotate in the vertical plane; the cross arm is installed on the column, and the end of the cross arm away from the column can move upward and downward; the cross arm is installed with a telescopic arm that can move toward and away from the column along the length direction of the cross arm; the steering mechanism is installed at one end of the bottom of the body close to the column; the rear drive mechanism is installed at one end of the bottom of the body away from the column, and the rear drive mechanism can provide power to move the body. Although the self-loading and unloading flatbed electric locomotive can load and unload goods, it adopts a lifting method for loading and unloading, which is less efficient.

[0004] In CN106429486A, an invention patent application entitled "A container automatic loading and unloading system" is disclosed, which includes an articulated industrial robot, a conveying and discharging device, a carrier body, a pallet placement and automatic transfer device, and a control panel. The carrier body is a flat body structure with several pairs of wheels installed at the bottom; the conveying and discharging device is installed on one side of the carrier body, including a roller conveying device and a discharging device, and the discharging device is installed on the roller conveying device; the other side of the conveying and discharging device is a control panel, and transparent glass is installed on the front and back of the control panel; the articulated industrial robot is installed on the front and back of the control panel respectively; the pallet placement and automatic transfer device is installed on one end of the carrier body. Although the system can load and unload goods, the use of industrial robots is relatively costly, and the overall structure is complex, the operation is cumbersome, and the efficiency of loading and unloading goods is also low. Summary of the invention

[0005] The object of the present invention is to provide a flatbed loader which can quickly load goods into a transport vehicle and is applicable to various cargo loading and unloading.

[0006] The objective of the present invention is achieved through such a technical solution, a flatbed loader used for loading and unloading various goods, comprising a frame, a cargo platform is arranged on the upper end surface of the frame, a driving component for pushing the cargo platform is arranged inside the frame; and a pushing device for pushing the movement of goods is arranged on the upper end surface of the cargo platform.

[0007] Among them, the cargo platform includes a cargo flatbed set on a frame and arranged horizontally, a plurality of square holes are evenly distributed on the cargo flatbed, and walking rollers are arranged in the square holes; a cargo cover plate is arranged on the upper end surface of the cargo flatbed, and a gentle slope is arranged at one end of the cargo cover plate; the lower end surface of the cargo cover plate is located at the upper end surface of the walking roller.

[0008] Further description, the walking roller includes a roller body, with rollers arranged at both ends of the roller body and located on the axis, the outer wall of the roller is processed to form a plane near the end, and a through hole radially penetrates the plane; the walking roller is connected to the cargo flatbed via the through hole and bolts.

[0009] In order to drive the cargo flatbed and the cargo cover to move, thereby driving the movement of the cargo, the driving assembly includes a motor and a reduction gear box arranged in the front end of the frame, a cargo power shaft is arranged in the frame and above the reduction gear box, and a cargo driven shaft is arranged in the frame and at the rear end of the frame, both ends of the cargo power shaft and both ends of the cargo driven shaft pass through the frame and are located in grooves arranged on the frame; a driving gear is arranged in the middle of the cargo power shaft, driven gears are arranged at both ends of the cargo power shaft, and transfer gears are arranged at both ends of the cargo driven shaft; the motor is connected to the reduction gear box through a chain, and the reduction gear box is connected to the driving gear through a chain; the driven gear is connected to the transfer gear through a transfer chain; the upper end surface of the transfer chain is in contact with the cargo flatbed.

[0010] In order to further push the goods into the transport vehicle, the pushing device includes a pushing box arranged on the upper end surface of the cargo cover plate, a placing table is horizontally arranged in the pushing box, and a pushing drive component and a symmetrically arranged pushing power source are arranged on the placing table; the pushing drive component is connected to the walking wheels arranged at the bottom of the pushing box through a transmission mechanism; the pushing power source is connected to the pushing board arranged at the front end of the pushing box; a synchronization mechanism connected to the pushing board is also arranged in the pushing box; and locking mechanisms are arranged on both sides of the outer wall of the pushing box.

[0011] Among them, the pushing drive assembly includes a pushing motor, a driving shaft and a driven shaft, the driving shaft and the driven shaft are located at the front and rear of the pushing box, and both ends of the driving shaft and the driven shaft pass through the pushing box, and walking wheels are provided at the passing ends; a driving gear set is provided on the driving shaft, and the pushing motor is connected to the driving gear set through a chain A.

[0012] Wherein, the pushing power source includes a pushing hydraulic cylinder or an electric cylinder, a push rod is arranged at the front end of the pushing hydraulic cylinder or the electric cylinder, and the front end of the push rod is connected to the pushing plate.

[0013] In order to achieve synchronization during pushing, the synchronization mechanism includes a synchronization rack located on the placement table and arranged on both sides of the pushing hydraulic cylinder or electric cylinder, and a synchronization shaft arranged on the rear side of the pushing hydraulic cylinder or electric cylinder, and a support is arranged at the rear end of the synchronization rack and on both sides of the rack, and the synchronization shaft passes through the support; synchronization gears meshing with the synchronization rack are arranged at both ends of the synchronization shaft; the front end of the synchronization rack is connected to the pushing plate.

[0014] In order to prevent the pushing device from receiving a reaction force and moving in the opposite direction when pushing the goods, the locking mechanism includes a locking cylinder which is arranged vertically on the side wall of the pushing box, a locking frame A is horizontally arranged on the side wall of the pushing box and below the locking cylinder, and locking frames B which are integrally formed with the frame and have a U-shaped cross-section are arranged on both sides of the front end of the frame; the upper end surface of the locking frame A and the lower end surface of the locking frame B are both provided with trapezoidal teeth that cooperate with each other.

[0015] In order to adjust the overall height and adapt to the heights of different transport vehicles, lifting cylinders are provided at the front and rear ends of the frame and on both sides of the frame, and the upper ends of the lifting cylinders are connected to the side walls of the frame.

[0016] In order to facilitate the alignment of the cargo box of the transport vehicle, left and right alignment devices are provided below the front end and the rear end of the frame.

[0017] Among them, the left and right alignment device includes a base plate, which is a U-shaped groove; movable plates are respectively arranged at both ends of the base plate, a two-way hydraulic cylinder with hydraulic rods at both ends is arranged in the middle of the base plate, and a connecting seat is arranged at one end of the movable plate, and the hydraulic rod of the two-way hydraulic cylinder is fixedly connected to the connecting seat; the lower end of the lifting cylinder is connected to the other end of the movable plate.

[0018] Due to the adoption of the above technical scheme, the present invention has the advantages of simple structure, easy operation and low loading and unloading cost. It can quickly and conveniently transfer goods to the means of transport, improve the loading and unloading efficiency and reduce the loading and unloading cost. At the same time, the present invention can load and unload goods in large quantities at one time, saving manpower and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings of the present invention are as follows: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A partial enlarged view of Figure 3 It is a rear end front view of the present invention; Figure 4 It is a schematic diagram of the structure of the driving assembly of the present invention; Figure 5 It is a schematic diagram of the partial structure of the cargo flatbed of the present invention; Figure 6 It is a schematic diagram of the walking roller structure of the present invention; Figure 7 A schematic structural diagram of a cargo pushing device according to the present invention; Figure 8 for Figure 7 Schematic diagram of the internal structure; Fig. 9 for Figure 8 Middle A enlarged view; Fig.10 It is a schematic diagram of the structure of the left-right alignment device of the present invention; Fig.11 It is a schematic diagram of the locking mechanism structure of the present invention; Fig.12 This is a schematic diagram of the second structure of the locking mechanism of the present invention. DETAILED DESCRIPTION

[0020] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and any improvement or substitution based on the basic spirit of the present embodiment still falls within the scope of protection required by the claims of the present invention.

[0021] Example 1: Figure 1 , 2 As shown in Figure 3, a flatbed loader used for loading and unloading various goods includes a frame 1, a cargo platform 2 is arranged on the upper end surface of the frame 1, a driving component for pushing the cargo platform 2 is arranged inside the frame 1; and a pushing device 3 for pushing the movement of goods is arranged on the upper end surface of the cargo platform 2.

[0022] like Figure 5 As shown, in the present invention, the cargo platform 2 includes a cargo flatbed 4 which is arranged on a frame 1 and is arranged horizontally, a plurality of square holes 5 are evenly distributed on the cargo flatbed 4, and walking wheels 6 are arranged in the square holes 5; a cargo cover plate 7 is arranged on the upper end surface of the cargo flatbed 4, and a gentle slope 8 is arranged at one end of the cargo cover plate 7; the lower end surface of the cargo cover plate 7 is located at the upper end surface of the walking wheel roller 6.

[0023] The gentle slope 8 can reduce the impact vibration of the cargo falling from the cargo cover 7 to the vehicle compartment.

[0024] Further description, such as Figure 6 As shown, the walking roller 6 includes a roller body 9, and roller shafts 10 are arranged at both ends of the roller body 9 and on the axis. The outer wall of the roller shaft 10 is processed to form a plane 11 near the end, and a through hole 12 is radially penetrated through the plane 11; the walking roller 6 is connected to the cargo flatbed 4 through the through hole 12 and bolts. The plane 11 is processed to form the end position of the roller shaft 10, so that the roller body 9 can be embedded in the cargo flatbed 4, thereby compressing the height between the cargo flatbed and the frame 1 to the extreme, which is 4.5 cm.

[0025] like Figure 4 As shown, in order to conveniently and quickly drive the cargo flatbed 4 and the cargo cover 7 to move forward and backward, the driving assembly includes a motor 13 and a reduction box 14 arranged in the front end of the frame 1, a cargo power shaft 15 is arranged in the frame 1 and above the reduction box 14, and a cargo driven shaft 16 is arranged in the frame 1 and at the rear end of the frame 1, both ends of the cargo power shaft 15 and both ends of the cargo driven shaft 16 pass through the frame 1 and are located in grooves 17 arranged on the frame 1; a driving gear 18 is arranged in the middle of the cargo power shaft 15, driven gears 19 are arranged at both ends of the cargo power shaft 18, and transfer gears 20 are arranged at both ends of the cargo driven shaft 16; the motor 13 is connected to the reduction box 14 through a chain, and the reduction box 14 is connected to the driving gear 18 through a chain; the driven gear 18 is connected to the transfer gear 20 through a transfer chain 21; the upper end surface of the transfer chain 21 is in contact with the cargo flatbed 4.

[0026] like Figure 7 , 8 As shown in Figure 9, further, the pushing device 3 includes a pushing box 22 arranged on the upper end surface of the cargo cover plate 7, a placing table 23 is horizontally arranged in the pushing box 22, and a pushing driving component and a symmetrically arranged pushing power source are arranged on the placing table 23; the pushing driving component is connected to the walking wheel 24 arranged at the bottom of the pushing box 22 through a transmission mechanism; the pushing power source is connected to the pushing plate 25 arranged at the front end of the pushing box 22; a synchronization mechanism connected to the pushing plate 25 is also arranged in the pushing box 22; and locking mechanisms are arranged on both sides of the outer wall of the pushing box 22.

[0027] Among them, the pushing drive assembly includes a pushing motor 26, a driving shaft 27 and a driven shaft 28, the driving shaft 27 and the driven shaft 28 are located at the front and rear of the pushing box 22, and both ends of the driving shaft 27 and the driven shaft 28 pass through the pushing box 22, and walking wheels 29 are provided at the passing ends; a driving gear set 30 is provided on the driving shaft 27, and the pushing motor 26 is connected to the driving gear set 30 through a chain A31.

[0028] In the present invention, when the cargo pushing device needs to be moved, the cargo pushing motor 26 works, and the cargo pushing motor 26 drives the driving gear set 30 to rotate through the chain A31. The rotating driving gear set 30 drives the driving shaft 27 to rotate, thereby driving the walking wheel 29 to move, thereby driving the cargo pushing device to move on the cargo cover 7.

[0029] Further described, the pushing power source includes a pushing hydraulic cylinder or electric cylinder 32 , a push rod 33 is provided at the front end of the pushing hydraulic cylinder or electric cylinder 32 , and the front end of the push rod 33 is connected to the pushing plate 25 .

[0030] like Fig.10 As shown, in order to synchronize the pushing hydraulic cylinders or electric cylinders 32 on both sides when pushing the goods and prevent the goods from shifting, the synchronization mechanism includes a synchronization rack 34 located on the placement table 23 and arranged on both sides of the pushing hydraulic cylinder or electric cylinder 32, and a synchronization shaft 35 arranged on the rear side of the pushing hydraulic cylinder or electric cylinder 32, a support 45 is arranged at the rear end of the synchronization rack 34 and on both sides of the synchronization rack 34, and the synchronization shaft 35 passes through the support 45; synchronization gears 36 meshing with the synchronization rack 34 are arranged at both ends of the synchronization shaft 35; the front end of the synchronization rack 34 is connected to the pushing plate 25.

[0031] When the pushing hydraulic cylinder or electric cylinder 32 is working, the pushing plate 25 is driven to extend or retract forward or backward through the push rod 33. At this time, since the front end of the synchronous rack 34 is connected to the pushing plate 25, under the action of the synchronous rack, the pushing hydraulic cylinders or electric cylinders 32 on both sides can be pushed out and retracted synchronously.

[0032] The present invention works as follows: when the goods need to be loaded into the transport vehicle, the goods are first loaded onto the cargo cover plate 7 by a forklift or a lifting tool.

[0033] The operation of the motor 13 drives the reduction box 14 to work, thereby driving the cargo power shaft 15 to rotate, and the rotating cargo power shaft 15 drives the driving gear 18 and the driven gear 19 to rotate, and the driven gear 19 drives the transfer gear 20 to rotate through the transfer chain 21, thereby driving the cargo driven shaft 16 to rotate; because the cargo flatbed 4 and the transfer chain 21 are in contact with each other, under the action of the transfer chain, the cargo flatbed 4 is driven to move on the frame 1, and the moving cargo flatbed 4 drives the cargo cover plate 7 to move accordingly, thereby delivering the goods into the transport vehicle.

[0034] When the goods are carried into the transport vehicle, the motor 13 reverses, driving the transmission chain 21 to rotate in the opposite direction, thereby driving the cargo flatbed 4 and the cargo cover 7 to retreat; at this time, the cargo pushing hydraulic cylinder or electric cylinder 32 in the cargo pushing drive assembly works to extend the push rod 33, and the push rod 33 drives the cargo pushing plate 25 to move forward to support the goods, thereby preventing the goods from being taken out of the transport vehicle as the cargo flatbed and the cargo cover 17 retreat.

[0035] In the present invention, the unloading process of the cargo is opposite to the loading process and will not be described in detail here.

[0036] like Figure 2 , 11 As shown, in the present invention, in order to prevent the pushing device from retreating due to the reaction force when pushing the goods, the locking mechanism includes a locking cylinder 37 which is arranged vertically on the side wall of the pushing box 22, a locking frame A38 is horizontally arranged on the side wall of the pushing box 22 and below the locking cylinder 37, and a locking frame B45 which is integrally formed with the frame 1 and has a U-shaped cross-section is arranged on both sides of the front end of the frame 1; the upper end surface of the locking frame A38 and the lower end surface of the locking frame B45 are both provided with trapezoidal teeth 39 that cooperate with each other.

[0037] When the cargo cover 7 moves, it also drives the cargo pushing device forward. When the cargo enters the transport vehicle, the locking frame A38 on the outer wall of the cargo pushing device corresponds to the locking frame B45. At this time, the locking cylinder 37 extends out and presses on the upper end surface of the locking frame B45. Due to the reaction force of the locking cylinder 37, the cargo pushing device lifts the push box 22, and the push box 22 drives the locking frame A38 to move upward, and the trapezoidal teeth 39 on the locking frame A38 mesh with the trapezoidal teeth 39 on the locking frame B45. When the push box 22 is lifted up, the cargo pushing device is separated from the cargo platform as a whole, and the cargo platform 2 can be withdrawn in the reverse direction at this time. The cargo pushing plate 25 at the front end of the cargo pushing device extends forward under the action of the cargo pushing hydraulic cylinder 32, supports the cargo and moves the cargo further to the other end of the transport vehicle to the innermost position to vacate the door closing position of the transport vehicle.

[0038] Of course, the locking mechanism may also be in other structural forms, such as: the locking frame A and the locking frame B are both flat plates and can also play the same role.

[0039] like Fig.12 As shown, for the locking mechanism, the extended end of the locking cylinder 37 can be set as a convex semicircular arc 46, and a semicircular arc with a concave 47 is set on the locking frame B45, and the same effect can be achieved by locking through the convex and concave combination.

[0040] In the present invention, in order to conveniently adjust the frame up and down, lifting cylinders 40 are provided at the front and rear ends of the frame 1 and on both sides of the frame, and the upper ends of the lifting cylinders 40 are connected to the side walls of the frame 1.

[0041] Furthermore, left-right alignment devices are provided below the front and rear ends of the frame 1; wherein the left-right alignment devices include a bottom plate 41, which is a U-shaped groove; movable plates 42 are provided at both ends of the bottom plate 41, a bidirectional hydraulic cylinder 43 with hydraulic rods at both ends is provided in the middle of the bottom plate 41, a connecting seat 44 is provided at one end of the movable plate 42, and the hydraulic rod of the bidirectional hydraulic cylinder 43 is fixedly connected to the connecting seat 44; the lower end of the lifting cylinder 40 is connected to the other end of the movable plate 42. When the position of the frame needs to be adjusted left and right, the bidirectional hydraulic cylinder 43 works, and the bidirectional hydraulic cylinder drives the hydraulic rod to extend and retract, thereby driving the connecting seat 44 to move, thereby driving the movable plate 42 to move left or right, and the left and right movement of the movable plate 42 drives the lifting cylinder 40 to move left or right, thereby achieving the purpose of adjusting the position of the frame 1. This enables the loader to automatically align with the truck loading and unloading port, eliminating the tedious process of the driver repeatedly adjusting the truck position to align with the loader frame, saving a lot of time and improving loading and unloading efficiency.

Claims

1. A flatbed loader for various cargo loading and unloading applications, comprising a frame (1), characterized in that: The upper end surface of the frame (1) is provided with a cargo platform (2), and a driving component for pushing the cargo platform (2) is provided inside the frame (1); and a cargo pushing device (3) for pushing the cargo to move is provided on the upper end surface of the cargo platform (2).

2. The flatbed loader for various cargo loading and unloading according to claim 1, characterized in that: The cargo platform (2) comprises a cargo flatbed (4) which is arranged on a frame (1) and arranged horizontally, a plurality of square holes (5) being evenly distributed on the cargo flatbed (4), and running wheels (6) being arranged in the square holes (5); a cargo cover plate (7) being arranged on the upper end surface of the cargo flatbed (4), and a gentle slope (8) being arranged at one end of the cargo cover plate (7); and a lower end surface of the cargo cover plate (7) being located on the upper end surface of the running wheels (6).

3. The flatbed loader for various cargo loading and unloading as claimed in claim 2, characterized in that: The travel roller (6) comprises a roller body (9), roller shafts (10) are arranged at both ends of the roller body (9) and on the axis, a plane (11) is formed on the outer wall of the roller shaft (10) near the end, and a through hole (12) radially penetrates the plane (11); the travel roller (6) is connected to the cargo platform (4) via the through hole (12) and bolts.

4. The flatbed loader for various cargo loading and unloading as claimed in claim 3, characterized in that: The drive assembly comprises a motor (13) and a reduction box (14) arranged in the front end of the frame (1); a cargo power shaft (15) is arranged in the frame (1) and above the reduction box (14); a cargo driven shaft (16) is arranged in the frame (1) and at the rear end of the frame (1); both ends of the cargo power shaft (15) and both ends of the cargo driven shaft (16) pass through the frame (1) and are located in grooves (17) provided on the frame (1); A driving gear (18) is provided in the middle, driven gears (19) are provided at both ends of the cargo power shaft (18), and transfer gears (20) are provided at both ends of the cargo driven shaft (16); the motor (13) is connected to the reduction box (14) through a chain, and the reduction box (14) is connected to the driving gear (18) through a chain; the driven gear (18) is connected to the transfer gear (20) through a transfer chain (21); and the upper end surface of the transfer chain (21) is in contact with the cargo flat plate (4).

5. The flatbed loader for various cargo loading and unloading as claimed in claim 4, characterized in that: The cargo pushing device (3) comprises a pushing box (22) arranged on the upper end surface of a cargo cover plate (7); a placing table (23) is horizontally arranged in the pushing box (22); a cargo pushing driving assembly and a symmetrically arranged cargo pushing power source are arranged on the placing table (23); the cargo pushing driving assembly is connected to a walking wheel (24) arranged at the bottom of the pushing box (22) through a transmission mechanism; the cargo pushing power source is connected to a cargo pushing plate (25) arranged at the front end of the pushing box (22); a synchronization mechanism connected to the cargo pushing plate (25) is also arranged in the pushing box (22); and locking mechanisms are arranged on both sides of the outer wall of the pushing box (22).

6. The flatbed loader used for loading and unloading various cargoes as claimed in claim 5, characterized in that: The pushing drive assembly comprises a pushing motor (26), a driving shaft (27) and a driven shaft (28); the driving shaft (27) and the driven shaft (28) are located at the front and rear of the pushing box (22); both ends of the driving shaft (27) and the driven shaft (28) pass through the pushing box (22); and walking wheels (29) are provided at the passing ends; a driving gear set (30) is provided on the driving shaft (27); and the pushing motor (26) is connected to the driving gear set (30) via a chain A (31).

7. The platform loader used for loading and unloading various goods as claimed in claim 5, characterized in that: The pushing power source comprises a pushing hydraulic cylinder or an electric cylinder (32), a push rod (33) is arranged at the front end of the pushing hydraulic cylinder or the electric cylinder (32), and the front end of the push rod (33) is connected to the pushing plate (25).

8. The flatbed loader used for loading and unloading various goods as claimed in claim 7, characterized in that: The synchronization mechanism comprises a synchronization rack (34) located on the placement table (23) and arranged on both sides of the cargo pushing hydraulic cylinder or electric cylinder (32), and a synchronization shaft (35) arranged on the rear side of the cargo pushing hydraulic cylinder or electric cylinder (32); a support (45) is arranged at the rear end of the synchronization rack (34) and on both sides of the synchronization rack (34); the synchronization shaft (35) passes through the support (45); synchronization gears (36) meshing with the synchronization rack (34) are arranged at both ends of the synchronization shaft (35); and the front end of the synchronization rack (34) is connected to the cargo pushing plate (25).

9. The flatbed loader for various cargo loading and unloading according to claim 8, characterized in that: The locking mechanism comprises a locking cylinder (37) disposed on a side wall of the push box (22) and arranged vertically, a locking frame A (38) disposed horizontally on the side wall of the push box (22) and below the locking cylinder (37), and locking frames B (45) integrally formed with the frame (1) and having a U-shaped cross section are disposed on both sides of the front end of the frame (1); the upper end surface of the locking frame A (38) and the lower end surface of the locking frame B (45) are both provided with trapezoidal teeth (39) that cooperate with each other; And a locking frame (38) is arranged on both sides of the front end of the frame (1), and a row of trapezoidal teeth (39) is arranged on the upper end surface of the locking frame (38).

10. The flatbed loader for various cargo loading and unloading according to claim 10, characterized in that: Lifting cylinders (40) are provided at the front and rear ends of the frame (1) and on both sides of the frame, and the upper ends of the lifting cylinders (40) are connected to the side walls of the frame (1).

11. The platform loader for various cargo loading and unloading as claimed in claim 10, characterized in that: Left-right alignment devices are provided below the front end and the rear end of the frame (1).

12. The flatbed loader used for loading and unloading various cargoes as claimed in claim 11, characterized in that: The left-right alignment device comprises a bottom plate (41), wherein the bottom plate (41) is a U-shaped groove; movable plates (42) are respectively arranged at both ends of the bottom plate (41); a bidirectional hydraulic cylinder (43) with hydraulic rods at both ends is arranged in the middle of the bottom plate (41); a connecting seat (44) is arranged at one end of the movable plate (42); the hydraulic rod of the bidirectional hydraulic cylinder (43) is fixedly connected to the connecting seat (44); and the lower end of the lifting cylinder (40) is connected to the other end of the movable plate (42).

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