A multipurpose power suction device mounted on a forklift truck

Abstract

The application discloses a multipurpose power-assisted suction and hoisting device installed on a forklift, relates to the technical field of hoisting devices, and comprises a lifting frame and a cantilever mechanism arranged on the top of the lifting frame, wherein the outer side of the lifting frame is slidably sleeved with a portal frame; a suction and hoisting assembly for vacuum-sucking materials is connected to the steel wires suspended below the cantilever mechanism. The multipurpose power-assisted suction and hoisting device installed on the forklift can tilt and hoist plate materials by adjusting the angle of the suction and hoisting assembly through a traction mechanism, and can prevent large plate materials from falling during transportation by supporting the materials in cooperation with a fork assembly. In addition, the vacuum suction cups which can be slid and unfolded in a staggered mode can adapt to materials with different lengths, the suction surface is increased when long materials are suctioned and hoisted, and the vacuum suction cups are arcally deflected through a turnover mechanism, so that materials with an included angle can be suctioned and hoisted, and the power-assisted suction and hoisting device can stably suction and hoist materials of multiple specifications in multiple ways.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, specifically to a multi-purpose assisted lifting device installed on a forklift. Background Technology

[0002] Manual handling of workpieces and materials in workshop production presents problems such as high costs and transportation difficulties. Forklifts are now widely used to handle and transport materials or plates that are small in size but heavy. To achieve more stable material handling, suction lifting devices are usually installed on forklifts. By suction lifting materials, materials can be moved onto the forklift and also moved from the forklift to a designated workstation.

[0003] Existing assisted suction lifting devices use vacuum suction cups to lift materials. Conventional suction lifting devices can only adhere to flat surfaces. However, for forklift transportation of large-sized plates, long materials, or materials with angled surfaces, conventional suction lifting devices can no longer meet the needs of lifting and handling materials of various sizes. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-purpose assisted lifting device installed on a forklift to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-purpose assisted lifting device installed on a forklift, comprising a lifting frame and a cantilever mechanism disposed on the top of the lifting frame, wherein a gantry is slidably sleeved on the outer side of the lifting frame; A steel wire suspended below the cantilever mechanism is connected to a suction and lifting assembly for vacuum adsorption of materials. The suction and lifting assembly includes an arched cover, an arc-shaped plate that slides along both sides of the inner wall of the arched cover, and a vacuum suction cup installed on the bottom surface of the arc-shaped plate. The suction and lifting assembly consists of a traction mechanism and a tilting mechanism. The traction mechanism, which is pulled by a steel wire, enables the suction and lifting assembly to work with the fork assembly to achieve tilting and lifting adjustment of the material. The tilting mechanism allows the vacuum suction cup to adjust the suction range and suction angle.

[0006] Preferably, the mast is hinged to the front side of the forklift body, and a fork assembly slides within the lifting frame.

[0007] Preferably, the inner arc surface of the arc plate is provided with arc-shaped locking teeth, and the inner side of the arched cover is provided with a drive gear disk that meshes with the arc-shaped locking teeth; The central shaft passing through the arched cover is connected to the middle of the drive gear disk. A protective shell is installed on the top of the arched cover. A worm gear and a worm are installed inside the protective shell. The central shaft in the middle of the drive gear disk is coaxially inserted with the worm gear.

[0008] Preferably, a guide groove is provided on the arc plate located between two adjacent arc-shaped teeth; The lower edge of the inner side of the arched cover is integrally formed with a flange, and a slot is opened in the flange. A card plate that slids in the slot and docks with the guide groove is also present.

[0009] Preferably, the outer arc surface of the arc plate has a raised strip integrally formed on the upper edge and the side edge away from one of the sides, and the inner wall of the arched cover is also provided with a sliding groove; A magnetically attached sliding plate is magnetically attached to one side of the raised strip on the upper edge of the curved plate, and the magnetically attached sliding plate is in contact with the groove on the inner wall of the arched cover.

[0010] Preferably, the traction mechanism includes a fixed cover installed on the top of the arched cover, a mounting base fixed on the upper surface of the fixed cover, a fan-shaped disk with a fan-shaped opening on the surface of the mounting base, and a hanging rod that is connected to the steel wire rotating on the central axis of the fan-shaped disk; One end of the mounting base is connected to a knob via a hinged rotating sleeve thread. One end of the knob is movably connected to a connecting seat that is sleeved with the lifting rod. The connecting seat is provided with a pin that slides with the fan-shaped opening.

[0011] Preferably, the cantilever mechanism includes a winch disposed on the top of the lifting frame for winding up steel wire, a square tube fixed to the front side of the winch, and a cross arm one inserted into the square tube, the end of the cross arm one away from the square tube being connected to the hinge shaft of the cross arm two. A rack is provided on the bottom wall of the first horizontal arm, a motor is installed on the side of the square tube, a vertical gear that meshes with the rack is installed on the output end of the first motor, and a rope pulley is installed on the top of the front end of the second horizontal arm.

[0012] Preferably, a motor is installed at one end of the horizontal arm of the square tube. The output end of the motor drives the hinge shaft of the horizontal arm to rotate. A horizontal parallel guide roller and a vertical parallel guide roller are installed on the winch and the square tube respectively. The steel wire wound by the winch is guided along the horizontal parallel guide roller, the vertical parallel guide roller and the guide rope wheel in sequence. The bottom of the winch is fixed with a ring gear seat, and the top of the lifting frame is equipped with a rotating base for the ring gear seat to rotate. The rotating base is equipped with a motor three with a horizontal gear at the output end. The motor three drives the horizontal gear to rotate so as to mesh with the ring gear seat.

[0013] Preferably, the second horizontal arm and the fixed cover are respectively connected to a connector, the connector between the second horizontal arm and the fixed cover is connected to a spiral conduit, the connector on the second horizontal arm is used to connect to the vacuum pump on the forklift body, and the connector on the fixed cover is connected to the vacuum suction cup through an air pipe.

[0014] Preferably, the flipping mechanism includes a flipping frame and an operating arm hinged to both sides of the fixed cover. A tension spring is connected to the flipping frame, and a slide rod that is slidably sleeved with the bottom end of the flipping frame is fixed on the vacuum suction cup. A support arm is connected between the central hinge shaft of the flipping frame and the operating arm.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the multi-purpose assisted suction and lifting device installed on a forklift can tilt and lift sheet materials by adjusting the angle of the suction and lifting components through the traction mechanism. The fork assembly supports the materials and prevents large sheet materials from falling during transportation. The use of a vacuum suction cup that can be staggered and slid out can adapt to materials of different lengths. When lifting longer materials, the suction surface is increased. At the same time, the flipping mechanism deflects the vacuum suction cup in an arc direction, which can lift materials with angles. This ensures that the assisted suction and lifting device can stably lift materials of various specifications for multiple purposes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the multi-purpose power-assisted lifting device of the present invention installed on a forklift; Figure 2 This is a three-dimensional structural schematic diagram of the cantilever mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the fork assembly and suction lifting assembly of the present invention for forking the plate. Figure 4 This is a three-dimensional cross-sectional structural diagram of the linkage between the suction and lifting components and the flipping mechanism of the present invention; Figure 5 This is a first three-dimensional structural diagram of the linkage between the suction and lifting assembly, the traction mechanism, and the tilting mechanism of the present invention. Figure 6 This is a second three-dimensional structural diagram of the linkage between the suction and lifting assembly, the traction mechanism, and the tilting mechanism of the present invention; Figure 7 This is a three-dimensional structural diagram of the arc-shaped plate of the present invention engaging with the drive gear plate via arc-shaped locking teeth; Figure 8 This is a schematic diagram of the third three-dimensional structure of the linkage between the suction and lifting assembly, the traction mechanism, and the tilting mechanism of the present invention; Figure 9 This is a side view of the structure of the operating arm pressing and flipping frame of the present invention to drive the vacuum suction cup to flip. Figure 10 This is a first three-dimensional exploded structural diagram of the linkage between the suction and lifting assembly, the traction mechanism, and the tilting mechanism of the present invention. Figure 11 This is a second three-dimensional exploded structural diagram of the linkage between the suction and lifting assembly, the traction mechanism, and the tilting mechanism of the present invention; Figure 12 This is a three-dimensional cross-sectional structural diagram of the traction mechanism of the present invention; Figure 13 This is a three-dimensional structural diagram of the flipping mechanism of the present invention.

[0017] In the diagram: 1. Forklift body; 2. Mast; 3. Lifting frame; 4. Fork assembly; 5. Cantilever mechanism; 501. Winch; 502. Square tube; 503. Crossarm 1; 504. Crossarm 2; 505. Motor 1; 506. Motor 2; 507. Ring gear seat; 508. Motor 3; 6. Suction lifting assembly; 601. Arched cover; 6011. Slot; 6012. Pallet; 6013. Slide; 6014. Magnetic sliding plate; 602. Curved plate; 603. Vacuum suction cup; 604, arc-shaped clamping teeth; 605, guide groove; 606, drive gear plate; 607, protective shell; 608, worm gear; 609, worm; 7, traction mechanism; 701, mounting base; 702, sector-shaped plate; 703, lifting rod; 704, rotating sleeve; 705, knob; 706, connecting base; 707, fixing cover; 8, flipping mechanism; 801, flipping frame; 802, tension spring; 803, operating arm; 804, support arm; 9, spiral guide tube. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 The present invention provides a technical solution: a multi-purpose power-assisted lifting device installed on a forklift, including a lifting frame 3 and a cantilever mechanism 5 located on the top of the lifting frame 3. A mast 2 is slidably sleeved on the outer side of the lifting frame 3. The mast 2 is hinged to the front side of the forklift body 1. A short hydraulic cylinder is provided on the forklift body 1 to drive the mast 2 to adjust its elevation angle. A long hydraulic cylinder for driving the lifting frame 3 to rise and fall is installed inside the mast 2. A fork assembly 4 slides inside the lifting frame 3. The fork assembly 4 drives the lifting frame 3 to rise and fall through a reciprocating chain.

[0020] In this embodiment, when the forklift body 1 is running, the mast 2 can be tilted by pushing and pulling the short hydraulic cylinder. The long hydraulic cylinder installed in the mast 2 can drive the lifting frame 3 to drive the fork assembly 4 to achieve a lifting operation. Then, the reciprocating chain can drive the fork assembly 4 to achieve a second lifting operation, ensuring that the fork assembly 4 can adjust the height of the material. When the lifting frame 3 is lifting or lowering, the cantilever mechanism 5 located at the top of the lifting frame 3 can also achieve lifting and lowering operations, ensuring that the assisted lifting device can work together with the lifting frame 3 of the forklift body 1 to lift and transport materials at different heights.

[0021] Please see Figure 1 and Figure 2 The cantilever mechanism 5 includes a winch 501 mounted on top of the lifting frame 3 for winding up steel wire. A square tube 502 is fixed to the front side of the winch 501, and a cross arm 503 is inserted into the square tube 502. The end of the cross arm 503 away from the square tube 502 is connected to the hinge shaft of the cross arm 504. A rack is provided on the bottom wall of the cross arm 503. A motor 505 is mounted on the side of the square tube 502. A vertical gear that meshes with the rack is mounted on the output end of the motor 505. A rope pulley is mounted on the top of the front end of the cross arm 504.

[0022] In this embodiment, the starting motor 505 drives the vertical gear at the output end to mesh with the rack on the bottom wall of the horizontal arm 503, thereby enabling the horizontal arm 503 to extend and retract along the square tube 502, which in turn drives the horizontal arm 504 to move forward or backward. When the winch 501 winds up the wire, the position of the wire passing through the guide rope wheel can be adjusted below the horizontal arm 504, ensuring that the assisted suction lifting device can lift materials at different positions.

[0023] Please see Figure 1 and Figure 2 A motor 506 is installed at the end of the horizontal arm 503 of the square tube 502. The output end of the motor 506 drives the hinge shaft of the horizontal arm 504 to rotate. The winch 501 and the square tube 502 are respectively equipped with horizontal parallel guide rollers and vertical parallel guide rollers. The steel wire wound by the winch 501 is guided along the horizontal parallel guide rollers, the vertical parallel guide rollers and the guide rope wheel in sequence.

[0024] In this embodiment, when the output end of the second motor 506 drives the hinge shaft of the second horizontal arm 504 to rotate, the second horizontal arm 504 can rotate in the forward or reverse direction at the end of the first horizontal arm 503. At this time, the steel wire completes the limiting guidance between the horizontally placed parallel guide roller and the vertically placed parallel guide roller, preventing the second horizontal arm 504 with the deflection angle from causing the steel wire to detach from the winch 501. At the same time, the assisted suction and lifting device can perform material suction and handling within the range of the second horizontal arm 504 as the deflection radius.

[0025] Please see Figure 2 The bottom of the winch 501 is fixed with a ring gear seat 507, and the top of the lifting frame 3 is equipped with a rotating base for the ring gear seat 507 to rotate. The rotating base is equipped with a motor 3 508 with a horizontal gear at the output end. The motor 3 508 drives the horizontal gear to rotate so as to mesh with the ring gear seat 507.

[0026] In this embodiment, the horizontal gear is driven to rotate by the motor 3 508 in the rotating base to mesh with the ring gear seat 507, thereby enabling the winch 501 to deflect at the top of the lifting frame 3. This facilitates the lifting of materials around the forklift body 1 onto the material pallet on the fork assembly 4, and also facilitates the lifting of materials on the material pallet onto the processing equipment or material storage location around the forklift body 1.

[0027] Please see Figure 1 , Figures 3-6 , Figure 8 and Figure 9 The steel wire suspended below the cantilever mechanism 5 is connected to the suction and lifting assembly 6 for vacuum adsorption of materials. The suction and lifting assembly 6 includes an arched cover 601, an arc-shaped plate 602 that slides along both sides of the inner wall of the arched cover 601, and a vacuum suction cup 603 installed on the bottom surface of the arc-shaped plate 602. The arc-shaped plate 602 that can slide below the arched cover 601 can drive the vacuum suction cup 603 to adsorb materials such as smooth and flat metal plates, multi-faceted pipes, and stone.

[0028] Please see Figures 4-11 The inner arc surface of the arc plate 602 is provided with arc-shaped locking teeth 604. The inner side of the arched cover 601 is provided with a drive gear 606 that meshes with the arc-shaped locking teeth 604. The central shaft passing through the arched cover 601 is connected to the middle of the drive gear 606. A protective shell 607 is installed on the top of the arched cover 601. A worm gear 608 and a worm 609 that mesh with each other are provided inside the protective shell 607. The central shaft in the middle of the drive gear 606 is coaxially inserted with the worm gear 608. One end of the worm 609 that extends out of the protective shell 607 is connected to a rotating wheel. The worm 609 can be rotated by operating the rotating wheel.

[0029] In this embodiment, the rotating wheel can drive the worm 609 inside the protective shell 607 to mesh with the worm wheel 608, so that the worm wheel 608 can drive the coaxial drive gear 606 to rotate. The rotating drive gear 606 can mesh with the arc-shaped teeth 604 on the inner arc surface of the arc plate 602 for transmission, which facilitates the two arc plates 602 to be staggered and unfolded in the arched cover 601. In this way, the two vacuum suction cups 603 can adapt to materials of different lengths when unfolded, and increase the adsorption surface when suctioning longer materials.

[0030] Please see Figures 4-7 and Figures 9-11 A guide groove 605 is provided on the arc plate 602 located between two adjacent arc-shaped teeth 604. A flange is integrally formed on the lower edge of the inner side of the arched cover 601. A groove 6011 is provided in the flange. A plate 6012 that slids in the groove 6011 and docks with the guide groove 605.

[0031] In this embodiment, a retaining plate 6012 is slidably inserted into the retaining groove 6011 of the flange, and one side of the retaining plate 6012 is aligned with the guide groove 605 on the arc plate 602. When the arc plate 602 slides in a staggered manner along the arched cover 601, the arc plate 602 can push and pull the retaining plate 6012 through the side of the guide groove 605. The retaining plate 6012 can achieve smooth guidance when moving along the retaining groove 6011. At the same time, when the arc plate 602 deflects at an angle along the arched cover 601, the guide groove 605 on the surface of the arc plate 602 can slide along the retaining plate 6012, thereby achieving arc-shaped guidance for the rotation of the arc plate 602.

[0032] Please see Figures 4-6 and Figures 9-11 The outer arc surface of the arc plate 602 has a raised strip integrally formed on the upper edge and the side edge away from one of the sides. The inner wall of the arched cover 601 is also provided with a sliding groove 6013. A magnetic sliding plate 6014 is magnetically attached to one side of the raised strip on the upper edge of the arc plate 602. The magnetic sliding plate 6014 is in contact with the sliding groove 6013 on the inner wall of the arched cover 601.

[0033] In this embodiment, when the guide groove 605 on the surface of the arc plate 602 slides along the card plate 6012, the protrusion on the upper edge of the arc plate 602 can drive the magnetic sliding plate 6014 to be guided along the sliding groove 6013 on the inner wall of the arched cover 601, ensuring that the rotation of the arc plate 602 can achieve two arc-shaped guidance, preventing the arc plate 602 from becoming loose when deflected. At the same time, when the two arc plates 602 are misaligned and laterally moved, the protrusion on the upper edge of the arc plate 602 and the magnetic sliding plate 6014 can be misaligned and sliding together. It should be noted that when the arc plate 602 slides laterally along the arched cover 601, one side edge of the outer arc surface of the arc plate 602 without protrusions will move in the arched cover 601. When the other side edge of the outer arc surface of the arc plate 602 with protrusions moves to fit against the flange of the arched cover 601, the two arc plates 602 will move to the shortest length state by misalignment.

[0034] Please see Figures 3-6 and Figures 8-12 The suction and lifting assembly 6 consists of a traction mechanism 7 and a tilting mechanism 8. The traction mechanism 7, which is pulled by a steel wire, enables the suction and lifting assembly 6 to work with the fork assembly 4 to achieve tilting and lifting adjustment of the material. The adjustment of the tilting mechanism 8 enables the vacuum suction cup 603 to adjust the suction range and suction angle. The traction mechanism 7 includes a fixed cover 707 mounted on the top of the arched cover 601. A mounting base 701 is fixed on the upper surface of the fixed cover 707. A fan-shaped disk 702 with a fan-shaped opening on the surface is provided on the mounting base 701. A hanging rod 703 that is connected to the steel wire is rotatably mounted on the central axis of the fan-shaped disk 702. A knob 705 is threadedly connected to one end of the mounting base 701 through a hinged rotating sleeve 704. A connecting seat 706 that is sleeved with the hanging rod 703 is movably connected to one end of the knob 705. A pin that slides with the fan-shaped opening is provided on the connecting seat 706.

[0035] In this embodiment, the knob 705 can extend and retract along the rotating sleeve 704 through the threaded transmission between the rotating knob 705 and the rotating sleeve 704. Since the rotating sleeve 704 is hinged to the mounting base 701, the knob 705 can deflect at an angle along the rotating sleeve 704. When the knob 705 extends and retracts along the rotating sleeve 704, the knob 705 can drive the connecting seat 706 at the front end to slide and adjust along the fan-shaped opening of the fan-shaped disk 702, thereby driving the rod 703 sleeved on the connecting seat 706 to deflect at an angle. When using the suction lifting assembly 6 to lift larger sheet materials, one side of the sheet material is placed against the fork assembly 4. Then, the adjustable lifting rod 703 is used to tilt the suction lifting assembly 6 to achieve an overall tilt. This allows the vacuum suction cup 603 to suction and lift the surface of the sheet material, ensuring that larger sheet materials are tilted and placed on the fork assembly 4. When the forklift body 1 moves, it can transport the tilted sheet material, preventing larger sheet materials from falling during transportation. This solves the problem that conventional forklifts have difficulty transporting large sheet materials.

[0036] Please see Figure 1 The second horizontal arm 504 and the fixed cover 707 are respectively connected to connectors. The connector between the second horizontal arm 504 and the fixed cover 707 is connected to a spiral conduit 9. The connector on the second horizontal arm 504 is used to connect to the vacuum pump on the forklift body 1. The connector on the fixed cover 707 is connected to the vacuum suction cup 603 through an air pipe.

[0037] In this embodiment, by activating the vacuum pump on the forklift body 1, the vacuum pump generates negative pressure on the spiral guide tube 9 and the air pipe connection, thereby enabling the vacuum suction cup 603 to perform negative pressure suction, so that the vacuum suction cup 603 can lift the material under negative pressure. This is existing technology and will not be elaborated on further here.

[0038] Please see Figures 4-6 , Figures 8-11 and Figure 13The flipping mechanism 8 includes a flipping frame 801 and an operating arm 803 hinged to both sides of the fixed cover 707. A tension spring 802 is connected to the flipping frame 801. A slide rod that is slidably sleeved with the bottom end of the flipping frame 801 is fixed on the vacuum suction cup 603. A support arm 804 is connected between the middle hinge shaft of the flipping frame 801 and the operating arm 803. The hinge center in the middle of the tilting frame 801, the hinge center where the tilting frame 801 connects to the fixed cover 707, the hinge center where the operating arm 803 connects to the fixed cover 707, and the hinge centers at both ends of the support arm 804 form a parallelogram structure.

[0039] In this embodiment, the operating arm 803 on the side of the deflection fixing cover 707 enables the support arm 804 to press down or pull up the flipping frame 801, thereby enabling the flipping frame 801 to fold and deflect. The folded and deflected flipping frame 801 can stretch or contract the tension spring 802, so that the folded and unfolded flipping frame 801 can squeeze the slide rod on the vacuum suction cup 603, and conversely, it can also pull the slide rod on the vacuum suction cup 603, causing the vacuum suction cup 603 to drive the arc plate 602 to deflect in an arc along the arched cover 601. At the same time, the arc-shaped clip on the inner side of the arc plate 602... When the tooth 604 meshes with the drive toothed disc 606, it achieves angular deflection. When the arc plate 602 and the vacuum suction cup 603 slide laterally, the slide rod on the upper side of the vacuum suction cup 603 slides and guides the bottom end of the flipping frame 801. When the two vacuum suction cups 603 achieve angular deflection, they can lift materials with different angles. At the same time, the traction mechanism 7 changes the tilt angle of the suction assembly 6 to tilt and lift materials. Then, the two vacuum suction cups 603 with adjustable length can be used to smoothly lift long materials with angles, ensuring that the assisted suction device can lift materials of various specifications.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-purpose assisted lifting device installed on a forklift, comprising a lifting frame (3) and a cantilever mechanism (5) disposed on the top of the lifting frame (3), wherein a gantry (2) is slidably sleeved on the outer side of the lifting frame (3), characterized in that: The steel wire suspended below the cantilever mechanism (5) is connected to the suction and lifting assembly (6) for vacuum adsorption of materials. The suction and lifting assembly (6) includes an arched cover (601), an arc plate (602) that slides along both sides of the inner wall of the arched cover (601), and a vacuum suction cup (603) installed on the bottom surface of the arc plate (602). The suction and lifting assembly (6) consists of a traction mechanism (7) and a flipping mechanism (8). The traction mechanism (7) pulled by the steel wire enables the suction and lifting assembly (6) to cooperate with the fork assembly (4) to achieve tilting and lifting adjustment of the material. The adjustment of the flipping mechanism (8) enables the vacuum suction cup (603) to achieve adjustment of the suction range and suction angle.

2. The multi-purpose power-assisted lifting device installed on a forklift according to claim 1, characterized in that: The mast (2) is hinged to the front side of the forklift body (1), and the fork assembly (4) slides inside the lifting frame (3).

3. The multi-purpose power-assisted lifting device installed on a forklift according to claim 1, characterized in that: The inner arc surface of the arc plate (602) is provided with arc-shaped locking teeth (604), and the inner side of the arched cover (601) is provided with a drive gear disc (606) that meshes with the arc-shaped locking teeth (604). The central shaft passing through the arched cover (601) is connected to the middle of the drive gear (606). A protective shell (607) is installed on the top of the arched cover (601). A worm gear (608) and a worm (609) that mesh with each other are provided inside the protective shell (607). The central shaft in the middle of the drive gear (606) is coaxially inserted with the worm gear (608).

4. A multi-purpose power-assisted lifting device installed on a forklift according to claim 3, characterized in that: A guide groove (605) is provided on the arc plate (602) located between two adjacent arc-shaped teeth (604); The lower edge of the inner side of the arched cover (601) is integrally formed with a flange, and a slot (6011) is provided in the flange. A card plate (6012) that is connected to the guide groove (605) slides in the slot (6011).

5. A multi-purpose power-assisted lifting device installed on a forklift according to claim 3, characterized in that: The outer arc surface edge of the arc plate (602) and the edge away from one of the side edges are integrally formed with a raised strip, and the inner wall of the arched cover (601) is also provided with a sliding groove (6013). A magnetically attached magnetic sliding plate (6014) is magnetically attached to one side of the raised strip on the upper edge of the arc plate (602), and the magnetic sliding plate (6014) is in contact with the groove (6013) on the inner wall of the arched cover (601).

6. A multi-purpose power-assisted lifting device installed on a forklift according to claim 1, characterized in that: The traction mechanism (7) includes a fixed cover (707) installed on the top of the arched cover (601). The upper surface of the fixed cover (707) is fixed with a mounting base (701). The mounting base (701) is provided with a fan-shaped disk (702) with a fan-shaped opening on its surface. A hanging rod (703) that is connected to the steel wire is rotated on the central axis of the fan-shaped disk (702). One end of the mounting base (701) is threadedly connected to a knob (705) via a hinged rotating sleeve (704). One end of the knob (705) is movably connected to a connecting seat (706) that is sleeved with the lifting rod (703). A pin that slides with the fan-shaped opening is provided on the connecting seat (706).

7. A multi-purpose power-assisted lifting device installed on a forklift according to claim 1, characterized in that: The cantilever mechanism (5) includes a winch (501) set on the top of the lifting frame (3) for winding up steel wire. A square tube (502) is fixed on the front side of the winch (501), and a cross arm (503) is inserted into the square tube (502). One end of the cross arm (503) away from the square tube (502) is connected to the hinge shaft of the cross arm (504). The bottom wall of the first horizontal arm (503) is provided with a rack, and the side of the square tube (502) is equipped with a motor (505). The output end of the motor (505) is equipped with a vertical gear that meshes with the rack, and the top of the front end of the second horizontal arm (504) is equipped with a rope pulley.

8. A multi-purpose power-assisted lifting device installed on a forklift according to claim 7, characterized in that: Motor 2 (506) is installed at the end of the first horizontal arm (503) of the square tube (502). The output end of the second horizontal arm (504) drives the hinge shaft of the second horizontal arm (504) to rotate. The winch (501) and the square tube (502) are respectively equipped with horizontal parallel guide rollers and vertical parallel guide rollers. The steel wire wound by the winch (501) is guided along the horizontal parallel guide rollers, the vertical parallel guide rollers and the guide rope wheel in sequence. The bottom of the winch (501) is fixed with a ring gear seat (507), and the top of the lifting frame (3) is equipped with a rotating base for the ring gear seat (507) to rotate. The rotating base is equipped with a motor three (508) with a horizontal gear at the output end. The horizontal gear is driven to rotate by the motor three (508) to mesh with the ring gear seat (507).

9. A multi-purpose power-assisted lifting device installed on a forklift according to claim 7, characterized in that: The second horizontal arm (504) and the fixed cover (707) are respectively connected to a connector. The connector between the second horizontal arm (504) and the fixed cover (707) is connected to a spiral conduit (9). The connector on the second horizontal arm (504) is used to connect to the vacuum pump on the forklift body (1). The connector on the fixed cover (707) is connected to the vacuum suction cup (603) through an air pipe.

10. A multi-purpose power-assisted lifting device installed on a forklift according to claim 6, characterized in that: The flipping mechanism (8) includes a flipping frame (801) and an operating arm (803) hinged to both sides of the fixed cover (707). A tension spring (802) is connected to the flipping frame (801), and a slide rod that is slidably sleeved with the bottom end of the flipping frame (801) is fixed on the vacuum suction cup (603). A support arm (804) is connected between the middle hinge shaft of the flipping frame (801) and the operating arm (803).

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