Lifting equipment for transportation

Abstract

The invention provides hoisting equipment for traffic transportation, and belongs to the technical field of hoisting equipment.The hoisting equipment for traffic transportation comprises a supporting frame, two guide rails arranged in a left-right spaced mode, a fixed plate, a movable frame and a driving motor, the supporting frame is installed on a vehicle frame, the fixed plate is fixedly connected with the supporting frame, and the guide rails are fixedly installed at the bottom of the fixed plate; the guide rails extend in the front-back direction, and the left and right ends of the movable frame slidably abut against the opposite ends of the two guide rails. The current inductor and the distribution box are arranged to control the driving motor, the belt transmission mechanism is protected through the magnetic attraction structure and the locking mechanism, the problems that the driving motor is overloaded and goods fall accidentally are effectively solved, and the beneficial effects that safety is improved, the goods are prevented from falling accidentally, and the driving motor is prevented from being damaged are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting equipment, and in particular relates to a lifting equipment for transportation. Background Art

[0002] Transportation is an engineering field that studies the layout and construction of railway, highway, waterway and air transportation infrastructure, vehicle operation engineering, traffic information engineering and control, and transportation operation and management. Modern transportation modes mainly include railway transportation, highway transportation, waterway transportation, air transportation and pipeline transportation. The five modes of transportation have their own advantages and disadvantages in terms of technology and economy, and have appropriate scope of use. During the transportation process, goods need to be loaded and unloaded, and lifting equipment is often needed to assist in the transportation.

[0003] However, existing lifting equipment has some problems in actual use. When heavy goods need to be moved, the drive motor is prone to current overload. In this case, the drive motor may lose control, causing the goods to accidentally fall to the ground, causing serious safety accidents. This will not only cause damage to the goods, but also may cause personal injury to surrounding workers, and will also affect the efficiency and safety of the entire transportation process. Summary of the invention

[0004] The object of the present invention is to provide a lifting device for transportation, aiming at solving the problems described in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A lifting device for transportation, comprising: a support frame, two guide rails spaced apart from each other, a fixed plate, a movable frame and a driving motor, wherein the support frame is mounted on a vehicle frame, the fixed plate is fixedly connected to the support frame, the guide rail is fixedly mounted on the bottom of the fixed plate, the guide rail extends in a front-rear direction, and the left and right ends of the movable frame are slidably abutted against one end opposite to the two guide rails; The invention is characterized in that a driving shaft is installed at the output end of the driving motor, a connecting frame and a fixing frame are installed on the fixing plate, a wire take-up roller is rotatably installed at the opposite ends of the connecting frame and the fixing frame, a traction rope is wound on the outer surface of the wire take-up roller, a belt transmission mechanism is provided on the driving shaft, and the belt transmission mechanism is connected to the wire take-up roller; A distribution box is provided on the fixed plate, and the distribution box is connected to the drive motor control. A current sensor is provided on the drive motor, and the current sensor is connected to the distribution box signal. When the current on the drive motor is too large, the current sensor transmits a signal to the distribution box, and the distribution box controls the drive motor to stop rotating. An insulating chamber is provided inside the connecting frame, a magnetic attraction structure is provided inside the insulating chamber, a first slide groove is provided inside the connecting frame, a magnet is slidably provided inside the first slide groove, a locking mechanism is provided on the magnet, the locking mechanism is connected to the belt transmission mechanism, the magnetic attraction structure can drive the magnet to move toward the belt transmission mechanism, and at the same time the locking mechanism locks the belt transmission mechanism.

[0006] As a preferred embodiment of the present invention, a connecting hole is provided inside the connecting frame, a fixed shaft is rotatably installed inside the connecting hole, the fixed shaft rotates through the connecting hole to pass through the outside of the connecting frame, one end of the fixed shaft rotates through the connecting frame and is connected to a belt transmission mechanism, a through hole is provided inside the connecting frame, one end of the through hole is connected to the connecting hole, and the other end of the through hole is connected to the outside of the connecting frame, a connecting shaft is rotatably installed inside the through hole, one end of the connecting shaft is connected to the fixed shaft, and the other end of the connecting shaft is connected to the take-up roller.

[0007] As a preferred embodiment of the present invention, the magnetic attraction structure includes an electromagnet installed inside an insulating chamber, an electric coil is wound on the outer surface of the electromagnet, and the electric coil is connected to the distribution box through a wire. When the electric coil is energized, the electromagnet generates a magnetic field. The magnetic poles generated by the electromagnet after energization are the same as the magnetic poles of the magnet facing one end of the electromagnet, so that the magnet moves in a direction away from the electromagnet.

[0008] As a preferred embodiment of the present invention, the belt transmission mechanism includes a driving pulley fixed on the driving shaft, a driven pulley is installed at one end of the fixed shaft that rotates and passes through the connecting frame, and the driving pulley is connected to the driven pulley by belt transmission.

[0009] As a preferred embodiment of the present invention, a circular ring is provided at one end where the fixed shaft is connected to the connecting shaft, a second slide groove is provided inside the connecting frame, the second slide groove is connected to the first slide groove, the second slide groove is connected to the connecting hole, a connecting block is slidably provided inside the second slide groove, the bottom of the connecting block is connected to a magnet, and a clamping block is provided at one end of the connecting block facing the fixed shaft, and the clamping block is adapted to the circular ring.

[0010] As a preferred embodiment of the present invention, a circular through groove is provided inside the connecting frame, the circular through groove is connected with the through hole, the locking mechanism includes a circular clamping plate arranged inside the circular through groove at a front-rear interval, the circular clamping plate is used to clamp the connecting shaft, a trapezoidal groove is provided inside the connecting frame, the trapezoidal groove is connected with the circular through groove, a connecting plate is fixedly provided at one end of the two circular clamping plates extending into the trapezoidal groove, a rotating hole is provided on the connecting plate, a rotating shaft is rotatably installed inside the rotating hole, and the connecting plate is rotatably installed inside the trapezoidal groove through the rotating shaft; A driving groove is provided inside the connecting frame, and the driving groove is connected to the first sliding groove. Driving blocks are slidingly provided inside the driving groove and are arranged at intervals. The driving blocks are hinged to the bottom of the connecting plate, and a first inclined surface is provided at one end opposite to the two driving blocks. A driving member is provided at one end of the magnet facing the driving block, and the driving member is connected to the driving block. The driving member is used to drive the two driving blocks to move toward each other.

[0011] As a preferred embodiment of the present invention, the driving member includes a first driving plate connected to one end of the magnet facing the driving block, a second driving plate is provided on the first driving plate, the second driving plate is an isosceles triangle structure, and the waist length of the second driving plate is adapted to the first inclined surface; An elastic member is arranged inside the driving groove, and the elastic member is connected to the driving block. The elastic member is used to drive the two driving blocks to move relative to each other.

[0012] As a preferred embodiment of the present invention, the elastic member is a triangular elastic block.

[0013] As a preferred embodiment of the present invention, mounting plates are provided at intervals on the left and right sides of the top of the mobile frame, and a pay-off roller is rotatably installed on the two mounting plates at one end relative to each other, the traction rope is wound around the pay-off roller, a hook is provided at the bottom of the mobile frame, and one end of the traction rope away from the pay-off roller passes through the mobile frame and is connected to the hook at the bottom of the mobile frame; A T-shaped slot penetrating front to back is provided inside the guide rail, a walking mechanism is provided inside the T-shaped slot, and the walking mechanism is connected to the moving frame.

[0014] As a preferred embodiment of the present invention, the walking mechanism includes a T-shaped plate slidably arranged inside the T-shaped slot, and rollers are rotatably installed on the left and right ends of the T-shaped plate. The rollers are arranged inside the T-shaped slot, and the opposite ends of the two T-shaped plates are connected to the moving frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This lifting equipment for transportation uses a current sensor and a distribution box to control the drive motor, and uses a magnetic structure and a locking mechanism to protect the belt transmission mechanism, effectively solving the problems of drive motor overload and accidental falling of goods. It has the advantages of improving safety, preventing accidental falling of goods, and avoiding damage to the drive motor.

[0016] 2. For the lifting equipment for transportation, when the driving motor is powered off, the locking mechanism protects the belt transmission mechanism by locking the fixed shaft and the connecting shaft. At the same time, the driving motor drives the belt transmission mechanism to move, and the belt transmission mechanism drives the take-up roller to move, thereby realizing a reliable connection and transmission between the driving motor and the take-up roller, and ensuring the stability and reliability of the lifting equipment during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of a specific embodiment of the present invention; Figure 2 It is a front view of a specific embodiment of the present invention; Figure 3 A side view of a fixed plate and a belt transmission mechanism in a specific embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA; Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 It is a front view of a fixed plate and a belt transmission mechanism in a specific embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of the middle BB; Figure 8 It is a schematic diagram of the three-dimensional structure of a specific embodiment of the present invention; Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure of the CC; Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at B in the middle; Fig.11 It is a schematic diagram of the structure inside the connection frame; Fig.12 A schematic diagram of the cross-sectional structure inside the connection frame.

[0018] In the figure: 10, support frame; 11, guide rail; 12, fixed plate; 13, mobile frame; 14, drive motor; 15, drive shaft; 16, connecting frame; 17, fixed frame; 18, take-up roller; 19, traction rope; 191, insulating chamber; 20, magnet; 21, connecting hole; 22, fixed shaft; 23, through hole; 24, connecting shaft; 25, electromagnet; 26, electric coil; 27, active pulley; 28, driven pulley; 29, ring; 30, connecting block; 31, clamping block; 32, circular clamping plate; 33, connecting plate; 34, driving block; 35, first driving plate; 36, second driving plate; 37, triangular elastic block; 38, pay-off roller; 39, T-shaped plate. DETAILED DESCRIPTION

[0019] 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.

[0020] During transportation, lifting equipment is needed to move heavy goods onto vehicles. However, when moving heavy goods, the drive motor is prone to current overload. In this case, the drive motor may lose control, causing the goods to accidentally fall to the ground, thereby causing serious safety accidents. Therefore, the following solutions are provided to solve this problem.

[0021] See also Figure 1-12 The present invention provides the following technical solutions: A lifting device for transportation, comprising: a support frame 10, two guide rails 11 spaced apart from each other, a fixed plate 12, a movable frame 13 and a driving motor 14, wherein the support frame 10 is mounted on a vehicle frame, the fixed plate 12 is fixedly connected to the support frame 10, the guide rail 11 is fixedly mounted on the bottom of the fixed plate 12, the guide rail 11 extends in the front-rear direction, and the left and right ends of the movable frame 13 are slidably abutted against one opposite end of the two guide rails 11.

[0022] A driving shaft 15 is installed at the output end of the driving motor 14, a connecting frame 16 and a fixed frame 17 are installed on the fixed plate 12, a take-up roller 18 is rotatably installed at the opposite ends of the connecting frame 16 and the fixed frame 17, a traction rope 19 is wound around the outer surface of the take-up roller 18, a belt transmission mechanism is provided on the driving shaft 15, and the belt transmission mechanism is connected to the take-up roller 18.

[0023] A connecting hole 21 is provided inside the connecting frame 16, and a fixed shaft 22 is rotatably installed inside the connecting hole 21. The fixed shaft 22 rotates through the connecting hole 21 to pass through the outside of the connecting frame 16, and one end of the fixed shaft 22 rotates through the connecting frame 16 to be connected to the belt transmission mechanism. A through hole 23 is provided inside the connecting frame 16, and one end of the through hole 23 is connected to the connecting hole 21, and the other end of the through hole 23 is connected to the outside of the connecting frame 16. A connecting shaft 24 is rotatably installed inside the through hole 23, and one end of the connecting shaft 24 is connected to the fixed shaft 22, and the other end of the connecting shaft 24 is connected to the take-up roller 18.

[0024] The connecting hole 21 and the through hole 23 inside the connecting frame 16 provide installation positions for the fixed shaft 22 and the connecting shaft 24. The fixed shaft 22 and the connecting shaft 24 reliably connect the belt transmission mechanism and the take-up roller 18 through a rotational connection. The fixed shaft 22 passes through the connecting hole 21 and is connected to the belt transmission mechanism. The connecting shaft 24 passes through the through hole 23 and connects the fixed shaft 22 and the take-up roller 18, ensuring that the drive motor 14 can effectively drive the take-up roller 18 to operate through the belt transmission mechanism, thereby realizing the retraction and release operation of the traction rope 19.

[0025] A distribution box is provided on the fixed plate 12, and the distribution box is connected to the control of the drive motor 14. A current sensor is provided on the drive motor 14, and the current sensor is connected to the signal of the distribution box. When the current on the drive motor 14 is too large, the current sensor transmits a signal to the distribution box, and the distribution box controls the drive motor 14 to stop rotating. When the drive motor 14 drives goods with large gravity, current overload is likely to occur. For this reason, by setting a current sensor and a distribution box, when the current sensor detects that the current is too large, the distribution box controls the drive motor 14 to stop rotating.

[0026] The belt transmission mechanism includes a driving pulley 27 fixed on the driving shaft 15, and a driven pulley 28 is installed at one end of the fixed shaft 22 that rotates and passes through the connecting frame 16. The driving pulley 27 and the driven pulley 28 are connected by belt transmission.

[0027] See also Figure 1-8 The driving pulley 27 can be fixed on the driving shaft 15 by key connection or interference fit, and the driven pulley 28 is installed on the fixed shaft 22 through a bearing to ensure that it can rotate freely. The belt can be made of wear-resistant and high-temperature resistant materials to improve its service life and transmission efficiency.

[0028] An insulating chamber 191 is opened inside the connecting frame 16, and a magnetic attraction structure is arranged inside the insulating chamber 191. A first slide groove is opened inside the connecting frame 16, and a magnet 20 is slidably arranged inside the first slide groove. A locking mechanism is provided on the magnet 20, and the locking mechanism is connected to the belt transmission mechanism. The magnetic attraction structure can drive the magnet 20 to move toward the belt transmission mechanism. At the same time, the locking mechanism locks the belt transmission mechanism to prevent the belt transmission mechanism from being damaged when the drive motor 14 stops rotating.

[0029] The magnetic attraction structure includes an electromagnet 25 installed inside an insulating chamber 191, and an electric coil 26 is wound on the outer surface of the electromagnet 25. The electric coil 26 is connected to the distribution box through a wire. When the electric coil 26 is energized, the electromagnet 25 generates a magnetic field. The magnetic poles generated by the electromagnet 25 after energization are the same as the magnetic poles of the magnet 20 facing one end of the electromagnet 25, so that the magnet 20 moves in a direction away from the electromagnet 25.

[0030] When the distribution box controls the operation of the drive motor 14, the distribution box also energizes the electric coil 26 through the wire. After the electric coil 26 is energized, a magnetic field is generated. The magnetic poles of the electromagnet 25 are the same as the magnetic poles of the magnet 20, so that the magnet 20 moves away from the electromagnet 25, so that the locking mechanism does not lock the belt transmission mechanism. This design can control the movement of the magnet 20 through the magnetic force of the electromagnet 25, avoids the complexity of the mechanical transmission structure and possible wear problems, and improves the reliability and service life of the equipment.

[0031] See also Figure 1-6 A ring 29 is provided at one end where the fixed shaft 22 is connected to the connecting shaft 24, a second slide groove is provided inside the connecting frame 16, the second slide groove is connected to the first slide groove, the second slide groove is connected to the connecting hole 21, a connecting block 30 is slidably provided inside the second slide groove, the bottom of the connecting block 30 is connected to the magnet 20, and a clamping block 31 is provided at one end of the connecting block 30 facing the fixed shaft 22, and the clamping block 31 is adapted to the ring 29.

[0032] When the magnet 20 moves in a direction away from the electromagnet 25, the magnet 20 drives the clamping block 31 to move in a direction away from the ring 29 through the connecting block 30, so that the clamping block 31 is not engaged with the ring 29, and the belt transmission mechanism can drive the take-up roller 18 to rotate through the fixed shaft 22 and the connecting shaft 24.

[0033] A circular through groove is provided inside the connecting frame 16, which is connected to the through hole 23. The locking mechanism includes a circular clamping plate 32 arranged inside the circular through groove at front and rear intervals. The circular clamping plate 32 is used to clamp the connecting shaft 24. A trapezoidal groove is provided inside the connecting frame 16, which is connected to the circular through groove. A connecting plate 33 is fixed at one end of the two circular clamping plates 32 extending into the trapezoidal groove. A rotating hole is provided on the connecting plate 33, and a rotating shaft is rotatably installed inside the rotating hole. The connecting plate 33 is rotatably installed inside the trapezoidal groove through the rotating shaft.

[0034] A driving groove is provided inside the connecting frame 16, and the driving groove is connected to the first sliding groove. Driving blocks 34 are slidably provided inside the driving groove and are spaced apart. The driving blocks 34 are hinged to each other at the bottom of the connecting plate 33. A first inclined surface is provided at the opposite end of the two driving blocks 34. A driving member is provided at the end of the magnet 20 facing the driving block 34. The driving member is connected to the driving block 34, and the driving member is used to drive the two driving blocks 34 to move toward each other.

[0035] The circular clamping plate 32 is arranged inside the circular through groove with front and rear intervals, and can clamp the connecting shaft 24. A connecting plate 33 is fixed at one end of the clamping plate. The connecting plate 33 is installed inside the trapezoidal groove through a rotating shaft, and can realize the clamping and loosening functions. When the driving block 34 inside the driving groove moves toward each other through the driving member, it can drive the circular clamping plate 32 to clamp the connecting shaft 24.

[0036] See also Figure 1-12 The driving member includes a first driving plate 35 connected to one end of the magnet 20 facing the driving block 34. A second driving plate 36 is provided on the first driving plate 35. The second driving plate 36 is an isosceles triangle structure. The waist length of the second driving plate 36 is adapted to the first inclined surface. An elastic member is provided inside the driving groove. The elastic member is connected to the driving block 34. The elastic member is used to drive the two driving blocks 34 to move relative to each other. The elastic member is a triangular elastic block 37.

[0037] When the current on the drive motor 14 is too large, the current sensor transmits a signal to the distribution box, and the distribution box controls the drive motor 14 to stop rotating. At the same time, the distribution box also stops supplying power to the electric coil 26. The electromagnet 25 has no magnetism at this time. At this time, the magnet 20 moves toward the electromagnet 25. At the same time, the magnet 20 drives the second drive plate 36 to move through the first drive plate 35. The second drive plate 36 drives the two drive blocks 34 to move toward each other through the first inclined surface. At the same time, the drive block 34 drives the circular clamping plate 32 to clamp the connecting shaft 24 through the connecting plate 33. At the same time, the magnet 20 drives the connecting block 30 to drive the clamping block 31 to enter the inside of the circular ring 29 to clamp the fixed shaft 22. The locking function of the belt transmission mechanism is realized by clamping the connecting shaft 24 and the fixed shaft 22.

[0038] See also Figure 1-12 When the distribution box supplies power to the drive motor 14, the distribution box also supplies power to the electric coil 26. At this time, the electromagnet 25 generates magnetism, and the magnet 20 moves away from the electromagnet 25. Under the action of the triangular elastic block 37, the two drive blocks 34 move relative to each other. At the same time, the two drive blocks 34 drive the circular clamping plate 32 to move through the connecting plate 33, so that the circular clamping plate 32 no longer clamps the connecting shaft 24. At the same time, the clamping block 31 also moves away from the ring 29 and no longer clamps the fixed shaft 22.

[0039] Mounting plates are provided at intervals on the left and right sides of the top of the mobile frame 13, and a pay-off roller 38 is rotatably installed at one end of the two mounting plates. The traction rope 19 is wound around the pay-off roller 38, and a hook is provided at the bottom of the mobile frame 13, which can effectively control the lifting and placement of the goods and prevent the drive motor 14 from getting out of control due to current overload.

[0040] One end of the traction rope 19 away from the pay-off roller 38 passes through the mobile frame 13 and is connected to the hook at the bottom of the mobile frame 13. A T-shaped slot running through the front and back is opened inside the guide rail 11. A traveling mechanism is arranged inside the T-shaped slot, and the traveling mechanism is connected to the mobile frame 13. The T-shaped slot design inside the guide rail 11 enables the traveling mechanism to slide stably, thereby ensuring the smooth movement of the mobile frame 13 on the guide rail 11.

[0041] The walking mechanism includes a T-shaped plate 39 that is slidably arranged inside the T-shaped groove. Rollers are rotatably installed on the left and right ends of the T-shaped plate 39. The rollers are arranged inside the T-shaped groove. The opposite ends of the two T-shaped plates 39 are connected to the moving frame 13. The operator can push the moving frame 13 to move on the guide rail 11, so that the moving frame 13 moves to a suitable position.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is limited by the appended claims rather than the above description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A lifting device for transportation, comprising: A support frame (10), two guide rails (11) arranged at intervals on the left and right, a fixed plate (12), a movable frame (13) and a driving motor (14), wherein the support frame (10) is mounted on a vehicle frame, the fixed plate (12) is fixedly connected to the support frame (10), the guide rail (11) is fixedly mounted on the bottom of the fixed plate (12), the guide rail (11) extends in the front-rear direction, and the left and right ends of the movable frame (13) are slidably abutted against opposite ends of the two guide rails (11); The invention is characterized in that a driving shaft (15) is installed at the output end of the driving motor (14), a connecting frame (16) and a fixing frame (17) are installed on the fixing plate (12), a wire take-up roller (18) is rotatably installed at opposite ends of the connecting frame (16) and the fixing frame (17), a traction rope (19) is wound around the outer surface of the wire take-up roller (18), a belt transmission mechanism is provided on the driving shaft (15), and the belt transmission mechanism is connected to the wire take-up roller (18); A distribution box is provided on the fixed plate (12), and the distribution box is control-connected to the drive motor (14). A current sensor is provided on the drive motor (14), and the current sensor is signal-connected to the distribution box. When the current on the drive motor (14) is too large, the current sensor transmits a signal to the distribution box, and the distribution box controls the drive motor (14) to stop rotating. An insulating chamber (191) is provided inside the connection frame (16), a magnetic attraction structure is provided inside the insulating chamber (191), a first slide groove is provided inside the connection frame (16), a magnet (20) is slidably provided inside the first slide groove, a locking mechanism is provided on the magnet (20), the locking mechanism is connected to the belt transmission mechanism, the magnetic attraction structure can drive the magnet (20) to move in the direction of the belt transmission mechanism, and the locking mechanism locks the belt transmission mechanism.

2. A lifting device for transportation according to claim 1, characterized in that: A connecting hole (21) is provided inside the connecting frame (16), a fixed shaft (22) is rotatably mounted inside the connecting hole (21), the fixed shaft (22) is rotatably passed through the connecting hole (21) and out of the connecting frame (16), one end of the fixed shaft (22) that is rotatably passed through the connecting frame (16) is connected to a belt transmission mechanism, a through hole (23) is provided inside the connecting frame (16), one end of the through hole (23) is connected to the connecting hole (21), and the other end of the through hole (23) is connected to the outside of the connecting frame (16), a connecting shaft (24) is rotatably mounted inside the through hole (23), one end of the connecting shaft (24) is connected to the fixed shaft (22), and the other end of the connecting shaft (24) is connected to a take-up roller (18).

3. A lifting device for transportation according to claim 2, characterized in that: The magnetic attraction structure comprises an electromagnet (25) installed inside an insulating chamber (191), an electric coil (26) is wound on the outer surface of the electromagnet (25), and the electric coil (26) is connected to a distribution box via a wire. When the electric coil (26) is energized, the electromagnet (25) generates a magnetic field. The magnetic pole generated by the electromagnet (25) after energization is the same as the magnetic pole of the magnet (20) facing one end of the electromagnet (25), so that the magnet (20) moves in a direction away from the electromagnet (25).

4. A lifting device for transportation according to claim 2, characterized in that: The belt transmission mechanism comprises a driving pulley (27) fixedly mounted on a driving shaft (15); a driven pulley (28) is mounted on one end of the fixed shaft (22) that rotates and passes through a connecting frame (16); and the driving pulley (27) and the driven pulley (28) are connected via a belt transmission.

5. A lifting device for transportation according to claim 3, characterized in that: A circular ring (29) is provided at one end of the fixed shaft (22) connected to the connecting shaft (24); a second slide groove is provided inside the connecting frame (16); the second slide groove is communicated with the first slide groove; the second slide groove is communicated with the connecting hole (21); a connecting block (30) is slidably provided inside the second slide groove; the bottom of the connecting block (30) is connected to the magnet (20); a clamping block (31) is provided at one end of the connecting block (30) facing the fixed shaft (22); the clamping block (31) is adapted to the circular ring (29).

6. A lifting device for transportation according to claim 5, characterized in that: A circular through groove is provided inside the connection frame (16), and the circular through groove is connected to the through hole (23); the locking mechanism comprises circular clamping plates (32) arranged inside the circular through groove at intervals in front and back, and the circular clamping plates (32) are used to clamp the connection shaft (24); a trapezoidal groove is provided inside the connection frame (16), and the trapezoidal groove is connected to the circular through groove; a connecting plate (33) is fixedly provided at one end of the two circular clamping plates (32) extending into the trapezoidal groove; a rotating hole is provided on the connecting plate (33), and a rotating shaft is rotatably installed inside the rotating hole; the connecting plate (33) is rotatably installed inside the trapezoidal groove via the rotating shaft; A driving groove is provided inside the connecting frame (16), the driving groove is communicated with the first sliding groove, driving blocks (34) are slidably provided inside the driving groove and are arranged at intervals, the driving blocks (34) are hinged to each other at the bottom of the connecting plate (33), and first inclined surfaces are provided at opposite ends of the two driving blocks (34), and a driving member is provided at one end of the magnet (20) facing the driving block (34), the driving member is connected to the driving block (34), and the driving member is used to drive the two driving blocks (34) to move towards each other.

7. A lifting device for transportation according to claim 6, characterized in that: The driving member comprises a first driving plate (35) connected to one end of the magnet (20) facing the driving block (34); a second driving plate (36) is provided on the first driving plate (35); the second driving plate (36) is an isosceles triangle structure; the waist length of the second driving plate (36) is adapted to the first inclined surface; An elastic member is provided inside the driving groove, the elastic member is connected to the driving block (34), and the elastic member is used to drive the two driving blocks (34) to move relative to each other.

8. A lifting device for transportation according to claim 7, characterized in that: The elastic member is a triangular elastic block (37).

9. A lifting device for transportation according to any one of claims 1 to 3, characterized in that: Mounting plates are spaced apart on the left and right sides of the top of the movable frame (13), and a pay-off roller (38) is rotatably mounted on two mounting plates at one end relative to one another. The traction rope (19) is wound around the pay-off roller (38), and a hook is provided at the bottom of the movable frame (13). One end of the traction rope (19) away from the pay-off roller (38) passes through the movable frame (13) and is connected to the hook at the bottom of the movable frame (13); A T-shaped slot penetrating front to back is provided inside the guide rail (11), a walking mechanism is provided inside the T-shaped slot, and the walking mechanism is connected to the moving frame (13).

10. A lifting device for transportation according to claim 9, characterized in that: The walking mechanism comprises a T-shaped plate (39) slidably arranged inside the T-shaped groove, rollers are rotatably mounted on the left and right ends of the T-shaped plate (39), and the rollers are arranged inside the T-shaped groove. The opposite ends of the two T-shaped plates (39) are connected to the moving frame (13).

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