Large-weight super-long workpiece conveying and stacking system

Abstract

The invention discloses a large-weight super-long workpiece conveying and stacking system, and relates to the technical field of stacking equipment, the large-weight super-long workpiece conveying and stacking system comprises a roller conveyor, and the right end of the bottom of the roller conveyor is fixedly connected with a fixed box. Through the arrangement of the driving motor, the first synchronous wheel, the first synchronous belt, the second synchronous wheel, the first screw rod, the moving frame and the unloading plate, large-weight super-long metal plates conveyed by the top of the roller conveyor can be rapidly unloaded to the top of the tray; under the matching action of a toothed plate, a circular gear, an electromagnetic clutch, a third synchronous wheel, a second screw rod and a lifting table, in the process that a moving frame and a discharging plate return after discharging is completed, the height of the heavy-weight super-long metal plate discharged from the top of the tray can be downwards moved and adjusted; the height of the heavy-weight super-long metal plates can be flush with the height of the roller conveyor, and therefore it is guaranteed that the subsequent heavy-weight super-long metal plates can be continuously stacked to the top of the tray.

Description

Technical Field

[0001] The invention relates to the technical field of stacking equipment, and in particular to a heavy-weight and ultra-long workpiece feeding and stacking system. Background Art

[0002] In modern industrial production, heavy and extra-long metal sheets, as a basic and widely used raw material, play a key role in many fields. For example, in the construction industry, they are used to build steel structure frames of large venues and high-rise office buildings; in the automotive manufacturing industry, they constitute key components such as car bodies and chassis; in the aerospace field, they are the core materials for manufacturing important structures such as aircraft wings and fuselages. However, the feeding and stacking of heavy and extra-long metal sheets has always been a difficult problem in the industrial production process.

[0003] The traditional stacking method for heavy and long metal plates usually requires personnel to operate large mechanical equipment such as forklifts or cranes. The overall operation requires a large working space, and personnel are prone to safety accidents due to blind spots or negligence during the operation, causing certain economic losses to the company. Summary of the invention

[0004] The purpose of the present invention is to provide a heavy-weight and extra-long workpiece feeding and stacking system, which can stack heavy-weight and extra-long metal plates, and the overall operation is convenient and fast, effectively improving the efficiency and safety of the stacking operation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heavy-weight and extra-long workpiece feeding and stacking system, comprising a roller conveyor, wherein the right end of the bottom of the roller conveyor is fixedly connected to a fixed box, a driving motor is fixedly installed on the upper end of the front surface of the fixed box, a first synchronous wheel is fixedly installed on the output end of the driving motor, both ends of the inner cavity of the fixed box are movably connected to a first screw rod through a bearing, a second synchronous wheel is fixedly installed on the surface of the first screw rod, a first synchronous belt is transmission-connected between the middle end of the second synchronous wheel and the middle end of the first synchronous wheel, and the surfaces of the two first screw rods are threadedly connected. There is a moving frame, a discharge plate is fixedly connected to the top of the moving frame and above the roller conveyor, a tooth plate is fixedly connected to the right end of the back of the moving frame, a stacking base is fixedly connected to the lower end of the back of the fixed box, a second screw is movably connected to the right end of the top of the stacking base through a bearing, a third synchronous wheel is fixedly installed at the bottom of the second screw, an electromagnetic clutch is fixedly installed at the bottom of the third synchronous wheel, a circular gear is fixedly installed at the bottom of the electromagnetic clutch, the circular gear is meshed with the tooth plate, the upper end of the second screw is threadedly connected to a lifting platform, and a pallet is placed at the middle end of the top of the lifting platform.

[0006] Preferably, both ends of the movable frame are movably connected to a rotating drum via bearings, the top of the rotating drum is movably connected to a lifting frame, the top of the lifting frame is fixedly connected to a supporting rail, the surface of the supporting rail is movably connected to the right end of the roller conveyor, the middle end of the supporting rail is movably connected to a guide wheel via a bearing, both ends of both sides of the lifting frame are fixedly connected to limit plates, the surrounding areas of the inner cavity of the fixed box are fixedly connected to limit rods, and the surface of the limit plates is movably connected to the surface of the limit rods.

[0007] Preferably, the left end of the top of the stacking base is movably connected to a third screw via a bearing, the left end of the lifting platform is threadedly connected to the upper end of the third screw, a fourth synchronous wheel is fixedly installed on the bottom of the third screw, a second synchronous belt is transmission-connected between the middle end of the fourth synchronous wheel and the middle end of the third synchronous wheel, the left end of the top of the outer surface of the stacking base is fixedly connected to a second fixed frame, and the top of the third screw is movably connected to the top of the second fixed frame via a bearing.

[0008] Preferably, the right end of the top of the outer surface of the stacking base is fixedly connected to a first fixing frame, the upper end of the second screw is movably connected to the top of the first fixing frame through a bearing, and the top of the second screw is fixedly connected to a rotating handle.

[0009] Preferably, a proximity switch is fixedly installed at the middle end of the top of the outer surface of the stacking base, and an alarm is fixedly installed at the right end of the front surface of the fixed box.

[0010] Preferably, guide slide bars are fixedly connected on all four sides of the top of the stacking base, the surface of the lifting platform is movably connected to the surface of the guide slide bars, both ends of the top of the lifting platform are fixedly connected to U-shaped positioning frames, and the lower end of the tray is movably connected to the surface of the U-shaped positioning frame.

[0011] Preferably, the back side of the first synchronous wheel is movably connected to an L-shaped stabilizing plate via a bearing, and the front surface of the L-shaped stabilizing plate is fixedly connected to the upper end of the inner cavity of the fixed box.

[0012] Preferably, a reinforcing support rod is fixedly connected to the middle end of the left side of the tooth plate, and the front surface of the reinforcing support rod is fixedly connected to the right end of the back side of the moving frame.

[0013] Preferably, a mounting bracket is fixedly installed between the right side of the electromagnetic clutch and the right side of the inner cavity of the stacking base.

[0014] Preferably, the left end of the bottom of the roller conveyor is fixedly connected to a supporting column, and the bottom of the supporting column is fixedly connected to a load-bearing base plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can quickly unload the heavy and extra-long metal plates transported by the top of the roller conveyor to the top of the pallet through the arrangement of the driving motor, the first synchronous wheel, the first synchronous belt, the second synchronous wheel, the first screw, the moving frame and the unloading plate. Under the cooperation of the toothed plate, the circular gear, the electromagnetic clutch, the third synchronous wheel, the second screw and the lifting platform, the height of the heavy and extra-long metal plates unloaded from the top of the pallet can be moved downward and adjusted during the process of returning after the unloading is completed by the moving frame and the unloading plate, so that the height of the heavy and extra-long metal plates can be flush with the height of the roller conveyor, thereby ensuring that the subsequent heavy and extra-long metal plates can be continuously stacked to the top of the pallet. The overall operation is convenient and quick, and the efficiency and safety of the stacking operation are effectively improved.

[0016] 2. The present invention can synchronously drive the rotating drum to move when the mobile frame moves and drives the unloading plate to push the heavy and extra-long metal plates through the arrangement of the rotating drum, the lifting frame, the supporting rail and the guide wheel. The movement of the rotating drum can push the lifting frame, the supporting rail and the guide wheel to move through the inclined surface, so that the guide wheel can lift the heavy and extra-long metal plates from the top of the roller conveyor during the movement, thereby effectively reducing the friction resistance of the contact between the heavy and extra-long metal plates and the roller conveyor during the unloading process, so that the unloading plate can effectively push the heavy and extra-long metal plates. The purpose of supporting and guiding the lifting frame is achieved through the arrangement of the limit rod and the limit plate, thereby preventing the lifting frame from tilting during the movement.

[0017] 3. The present invention can support the left end of the lifting platform through the arrangement of the third screw, the fourth synchronous wheel and the second synchronous belt. Under the action of the rotation of the second screw and the third synchronous wheel, the fourth synchronous wheel and the third screw can be driven to rotate through the second synchronous belt, so that the third screw can drive the left end of the lifting platform to move under the action of rotation, thereby ensuring the stability of the lifting platform's moving operation and preventing the left end of the lifting platform from tilting due to force. Through the arrangement of the second fixed frame, the purpose of supporting the top of the third screw is achieved, preventing the third screw from tilting due to force.

[0018] 4. The present invention achieves the purpose of supporting the top of the second screw rod by setting the first fixed frame, thereby preventing the second screw rod from tilting due to force; by setting the proximity switch and the alarm, when the lifting platform approaches the top of the pile base, an alarm prompt can be given to personnel, so that the personnel can promptly discover and replace the pallet accordingly; by setting the guide slide bar, the purpose of guiding the lifting platform is achieved, thereby preventing the lifting platform from tilting due to force; by setting the U-shaped positioning frame, the pallet can be positioned at the top of the lifting platform, thereby preventing the pallet from being displaced due to force; by setting the L-shaped stabilizing plate, the purpose of supporting the back side of the first synchronous wheel is achieved, thereby preventing the first synchronous wheel from tilting due to force; and by setting the reinforcing support rod, the purpose of strengthening the support of the left side of the tooth plate is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the cross-sectional structure of the right side of the fixing box of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a rear cross-sectional structural schematic diagram of the fixed box of the present invention; Figure 6 It is a rear cross-sectional structural schematic diagram of the pile base of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 8 It is a schematic diagram of the front three-dimensional structure of the mobile frame of the present invention.

[0020] In the figure: 1. roller conveyor; 2. support track; 3. discharge plate; 4. drive motor; 5. fixed box; 6. alarm; 7. stacking base; 8. tray; 9. first fixed frame; 10. guide slide bar; 11. proximity switch; 12. lifting platform; 13. second fixed frame; 14. guide wheel; 15. first synchronous belt; 16. rotating drum; 17. second synchronous wheel; 18. moving frame; 19. lifting frame; 20. limit plate; 21. first screw; 22. limit rod; 23. tooth plate; 24. L-shaped stabilizing plate; 25. circular gear; 26. second screw; 27. U-shaped positioning frame; 28. third screw; 29. ​​first synchronous wheel; 30. strengthening support rod; 31. third synchronous wheel; 32. second synchronous belt; 33. fourth synchronous wheel; 34. electromagnetic clutch. DETAILED DESCRIPTION

[0021] 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.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0023] Embodiment 1: See also Figure 1-Figure 8 As shown, the present invention provides a heavy-weight and ultra-long workpiece feeding and stacking system, including a roller conveyor 1, a fixed box 5 is fixedly connected to the right end of the bottom of the roller conveyor 1, a driving motor 4 is fixedly installed on the upper end of the front surface of the fixed box 5, a first synchronous wheel 29 is fixedly installed on the output end of the driving motor 4, both ends of the inner cavity of the fixed box 5 are movably connected to the first screw 21 through bearings, a second synchronous wheel 17 is fixedly installed on the surface of the first screw 21, a first synchronous belt 15 is transmission-connected between the middle end of the second synchronous wheel 17 and the middle end of the first synchronous wheel 29, a moving frame 18 is threadedly connected between the surfaces of the two first screws 21, and the moving frame A discharge plate 3 is fixedly connected to the top of 18 and located above the roller conveyor 1, a tooth plate 23 is fixedly connected to the right end of the back of the mobile frame 18, a stacking base 7 is fixedly connected to the lower end of the back of the fixed box 5, a second screw 26 is movably connected to the right end of the top of the stacking base 7 through a bearing, a third synchronous wheel 31 is fixedly installed at the bottom of the second screw 26, an electromagnetic clutch 34 is fixedly installed at the bottom of the third synchronous wheel 31, a circular gear 25 is fixedly installed at the bottom of the electromagnetic clutch 34, the circular gear 25 is meshed with the tooth plate 23, the upper end of the second screw 26 is threadedly connected to the lifting platform 12, and a tray 8 is placed at the middle end of the top of the lifting platform 12.

[0024] In the present technical scheme, by setting the driving motor 4, the first synchronous wheel 29, the first synchronous belt 15, the second synchronous wheel 17, the first screw 21, the movable frame 18 and the unloading plate 3, the heavy weight and extra-long metal plates transported on the top of the roller conveyor 1 can be quickly unloaded to the top of the pallet 8, and under the cooperation between the toothed plate 23, the circular gear 25, the electromagnetic clutch 34, the third synchronous wheel 31, the second screw 26 and the lifting platform 12, after the unloading is completed and the movable frame 18 and the unloading plate 3 return to their original position, the height of the heavy weight and extra-long metal plates unloaded from the top of the pallet 8 can be moved and adjusted downward, so that the height of the heavy weight and extra-long metal plates can be flush with the height of the roller conveyor 1, thereby ensuring that the subsequent heavy weight and extra-long metal plates can be continuously stacked to the top of the pallet 8, and the overall operation is convenient and fast, and effectively improves the efficiency and safety of the stacking operation.

[0025] Embodiment 2: Based on the first embodiment, the present invention is as follows Figure 1-Figure 5 and Figure 8 As shown, both ends of the movable frame 18 are movably connected to the rotating drum 16 through bearings, the top of the rotating drum 16 is movably connected to the lifting frame 19, the top of the lifting frame 19 is fixedly connected to the supporting rail 2, the surface of the supporting rail 2 is movably connected to the right end of the roller conveyor 1, the middle end of the supporting rail 2 is movably connected to the guide wheel 14 through bearings, both ends of both sides of the lifting frame 19 are fixedly connected to the limiting plates 20, the surroundings of the inner cavity of the fixed box 5 are fixedly connected to the limiting rods 22, and the surface of the limiting plate 20 is movably connected to the surface of the limiting rod 22.

[0026] In the present technical solution, by setting the rotating drum 16, the lifting frame 19, the support rail 2 and the guide wheel 14, in the process that the moving frame 18 moves and drives the unloading plate 3 to push the heavy and extra-long metal sheet, the rotating drum 16 can be driven to move synchronously. The movement of the rotating drum 16 can push the lifting frame 19, the support rail 2 and the guide wheel 14 to move through the inclined surface, so that the guide wheel 14 can lift the heavy and extra-long metal sheet from the top of the roller conveyor 1 during the movement, thereby effectively reducing the friction resistance of the contact between the heavy and extra-long metal sheet and the roller conveyor 1 during the unloading process, so that the unloading plate 3 can effectively push the heavy and extra-long metal sheet. Through the setting of the limit rod 22 and the limit plate 20, the purpose of supporting and guiding the lifting frame 19 is achieved, and the lifting frame 19 is prevented from tilting during the movement.

[0027] Embodiment three: Based on the first embodiment, the present invention is as follows Figure 2 , Figure 6 and Figure 7As shown, it is disclosed that the left end of the top of the stacking base 7 is movably connected to the third screw 28 through a bearing, the left end of the lifting platform 12 is threadedly connected to the upper end of the third screw 28, the bottom of the third screw 28 is fixedly installed with a fourth synchronous wheel 33, the middle end of the fourth synchronous wheel 33 and the middle end of the third synchronous wheel 31 are transmission-connected with a second synchronous belt 32, the left end of the top of the outer surface of the stacking base 7 is fixedly connected to the second fixing frame 13, and the top of the third screw 28 is movably connected to the top of the second fixing frame 13 through a bearing.

[0028] In the present technical solution, by setting the third screw 28, the fourth synchronous wheel 33 and the second synchronous belt 32, the left end of the lifting platform 12 can be supported, and under the action of the rotation of the second screw 26 and the third synchronous wheel 31, the fourth synchronous wheel 33 and the third screw 28 can be driven to rotate through the second synchronous belt 32, so that the third screw 28 can drive the left end of the lifting platform 12 to move under the action of rotation, thereby ensuring the stability of the moving operation of the lifting platform 12 and preventing the left end of the lifting platform 12 from tilting due to force. By setting the second fixed frame 13, the purpose of supporting the top of the third screw 28 is achieved, and the third screw 28 is prevented from tilting due to force.

[0029] Embodiment 4: Based on the first embodiment, the present invention is as follows Figure 1-Figure 8 As shown, the first fixing frame 9 is fixedly connected to the right end of the top of the outer surface of the stacking base 7, the upper end of the second screw 26 is movably connected to the top of the first fixing frame 9 through a bearing, the top of the second screw 26 is fixedly connected to a rotating handle, the middle end of the top of the outer surface of the stacking base 7 is fixedly installed with a proximity switch 11, the right end of the front surface of the fixed box 5 is fixedly installed with an alarm 6, the top of the stacking base 7 is fixedly connected with a guide slide 10 all around, the surface of the lifting platform 12 is movably connected to the surface of the guide slide 10, and the lifting platform 12 Both ends of the top are fixedly connected with a U-shaped positioning frame 27, the lower end of the tray 8 is movably connected to the surface of the U-shaped positioning frame 27, the back of the first synchronous wheel 29 is movably connected with an L-shaped stabilizing plate 24 through a bearing, the front surface of the L-shaped stabilizing plate 24 is fixedly connected to the upper end of the inner cavity of the fixed box 5, the middle end of the left side of the tooth plate 23 is fixedly connected with a reinforcing support rod 30, the front surface of the reinforcing support rod 30 is fixedly connected to the right end of the back of the moving frame 18, and a mounting bracket is fixedly installed between the right side of the electromagnetic clutch 34 and the right side of the inner cavity of the stacking base 7.

[0030] In the present technical scheme, the purpose of supporting the top of the second screw rod 26 is achieved by setting the first fixing frame 9, so as to prevent the second screw rod 26 from tilting due to the force. By setting the proximity switch 11 and the alarm 6, when the lifting platform 12 approaches the top of the stacking base 7, an alarm prompt can be given to the personnel, so that the personnel can find and replace the pallet 8 in time. By setting the guide slide bar 10, the purpose of guiding the lifting platform 12 is achieved, so as to prevent the lifting platform 12 from tilting due to the force. By setting the U-shaped positioning frame 27, the pallet 8 can be positioned at the top of the lifting platform 12, so as to prevent the pallet 8 from being displaced due to the force. By setting the L-shaped stabilizing plate 24, the purpose of supporting the back side of the first synchronous wheel 29 is achieved, so as to prevent the first synchronous wheel 29 from tilting due to the force. By setting the reinforcing support rod 30, the purpose of strengthening the support on the left side of the tooth plate 23 is achieved.

[0031] The working principle of the present invention is as follows: through the setting of the roller conveyor 1, the heavy-weight and extra-long metal sheets to be stacked can be conveyed to the right side, and when the heavy-weight and extra-long metal sheets are conveyed to the rear of the discharge plate 3, the first synchronous wheel 29 can be driven to rotate by starting the driving motor 4. The rotation of the first synchronous wheel 29 can drive the second synchronous wheel 17 and the first screw 21 to rotate through the first synchronous belt 15. The rotation of the first screw 21 drives the moving frame 18 and the discharge plate 3 to move. During the movement of the moving frame 18, the tooth plate 23 can be driven to move. Since the electromagnetic clutch 34 is in a disengaged state at this time, the tooth plate 23 can only drive the circular gear 25 to idle during the movement. At the same time, the heavy-weight and extra-long metal sheets conveyed on the top of the roller conveyor 1 are pushed backwards under the action of the movement of the discharge plate 3 until the heavy-weight and extra-long metal sheets can fall to the top of the tray 8, and then the heavy-weight and extra-long metal sheets are driven to the rear by starting the driving motor 4. The driving motor 4 works and drives the first synchronous wheel 29 to rotate in the other direction. The first synchronous wheel 29 rotates and drives the second synchronous wheel 17 and the first screw 21 to rotate through the first synchronous belt 15. The first screw 21 rotates and drives the moving frame 18, the tooth plate 23 and the unloading plate 3 to move and reset. At this time, since the electromagnetic clutch 34 is in an engaged state, the tooth plate 23 can drive the circular gear 25 to rotate during the movement, so that the circular gear 25 can drive the third synchronous wheel 31 and the second screw 26 to rotate through the electromagnetic clutch 34. When the second screw 26 rotates, it can drive the lifting platform 12, the pallet 8 and the heavy and long metal sheets stacked on the top to move downward, so that the stacked heavy and long metal sheets can always be flush with the top of the roller conveyor 1, so that the heavy and long metal sheets can be effectively stacked on the top of the pallet 8 in the subsequent continuous unloading process.

[0032] 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 heavy-weight and extra-long workpiece conveying and stacking system, comprising a roller conveyor (1), characterized in that: The right end of the bottom of the roller conveyor (1) is fixedly connected to a fixed box (5), the upper end of the front surface of the fixed box (5) is fixedly mounted with a driving motor (4), the output end of the driving motor (4) is fixedly mounted with a first synchronous wheel (29), both ends of the inner cavity of the fixed box (5) are movably connected with a first screw rod (21) through a bearing, a second synchronous wheel (17) is fixedly mounted on the surface of the first screw rod (21), a first synchronous belt (15) is transmission-connected between the middle end of the second synchronous wheel (17) and the middle end of the first synchronous wheel (29), a moving frame (18) is threadedly connected between the surfaces of the two first screw rods (21), and the top of the moving frame (18) and located above the roller conveyor (1) is fixedly connected A discharge plate (3) is connected, the right end of the back of the movable frame (18) is fixedly connected to a toothed plate (23), the lower end of the back of the fixed box (5) is fixedly connected to a stacking base (7), the right end of the top of the stacking base (7) is movably connected to a second screw (26) through a bearing, the bottom of the second screw (26) is fixedly mounted with a third synchronous wheel (31), the bottom of the third synchronous wheel (31) is fixedly mounted with an electromagnetic clutch (34), the bottom of the electromagnetic clutch (34) is fixedly mounted with a circular gear (25), the circular gear (25) is meshed with the toothed plate (23), the upper end of the second screw (26) is threadedly connected to a lifting platform (12), and a tray (8) is placed at the middle end of the top of the lifting platform (12).

2. A heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: Both ends of the movable frame (18) are movably connected to the rotating drum (16) via bearings, the top of the rotating drum (16) is movably connected to the lifting frame (19), the top of the lifting frame (19) is fixedly connected to the support track (2), the surface of the support track (2) is movably connected to the right end of the roller conveyor (1), the middle end of the support track (2) is movably connected to the guide wheel (14) via bearings, both ends of both sides of the lifting frame (19) are fixedly connected to the limit plates (20), the inner cavity of the fixed box (5) is fixedly connected to the limit rods (22), and the surface of the limit plates (20) is movably connected to the surface of the limit rods (22).

3. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: The left end of the top of the material stacking base (7) is movably connected to a third screw (28) via a bearing, the left end of the lifting platform (12) is threadedly connected to the upper end of the third screw (28), a fourth synchronous wheel (33) is fixedly installed at the bottom of the third screw (28), a second synchronous belt (32) is transmission-connected between the middle end of the fourth synchronous wheel (33) and the middle end of the third synchronous wheel (31), the left end of the top of the outer surface of the material stacking base (7) is fixedly connected to a second fixing frame (13), and the top of the third screw (28) is movably connected to the top of the second fixing frame (13) via a bearing.

4. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: The right end of the top of the outer surface of the stacking base (7) is fixedly connected to a first fixing frame (9), the upper end of the second screw rod (26) is movably connected to the top of the first fixing frame (9) via a bearing, and the top of the second screw rod (26) is fixedly connected to a rotating handle.

5. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: A proximity switch (11) is fixedly mounted on the middle end of the top of the outer surface of the material stacking base (7), and an alarm (6) is fixedly mounted on the right end of the front surface of the fixed box (5).

6. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: The top of the stacking base (7) is fixedly connected to guide slide bars (10) on all sides, the surface of the lifting platform (12) is movably connected to the surface of the guide slide bars (10), the top ends of the lifting platform (12) are fixedly connected to U-shaped positioning frames (27), and the lower end of the tray (8) is movably connected to the surface of the U-shaped positioning frame (27).

7. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: The back side of the first synchronous wheel (29) is movably connected to an L-shaped stabilizing plate (24) via a bearing, and the front surface of the L-shaped stabilizing plate (24) is fixedly connected to the upper end of the inner cavity of the fixing box (5).

8. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: A reinforcing support rod (30) is fixedly connected to the middle end of the left side of the tooth plate (23), and the front surface of the reinforcing support rod (30) is fixedly connected to the right end of the back side of the moving frame (18).

9. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: A mounting bracket is fixedly mounted between the right side of the electromagnetic clutch (34) and the right side of the inner cavity of the material stacking base (7).

10. The heavy-weight and extra-long workpiece feeding and stacking system according to claim 1, characterized in that: The left end of the bottom of the roller conveyor (1) is fixedly connected to a supporting column, and the bottom of the supporting column is fixedly connected to a load-bearing bottom plate.

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