A redirecting device for a hoisting process

Abstract

The application discloses a redirecting device for hoisting process, comprising a base capable of sliding along a bridge, a rotating column fixed with the base, a turning groove opened in the side of the rotating column, a plurality of turning wheels arranged in an annular array on the side of the rotating column and located in the turning groove, a redirecting motor for synchronously driving the plurality of turning wheels to roll around the axis of the rotating column, a plurality of electric hoists fixed on the side of the plurality of turning wheels to establish a plurality of hoisting points for hoisting the hoisted object, the position of each electric hoist and the hoisting point is controlled by driving the turning wheels to roll through the redirecting motor, and the synchronous rotation of the hoisted object is realized. Compared with the prior art, the application can relatively accurately control the rotation direction and rotation angle of the hoisted object, the control steps are simple, the reliability is high, and the posture of the hoisted object can be controlled in real time.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, and more specifically to a reversing device for the hoisting process. Background Technology

[0002] Lifting refers to the process of using a crane (such as a bridge crane) to lift a target object upwards with ropes or a basket, raising it off the ground, suspending it in the air, moving it horizontally above the target location, and then lowering it down. Due to their length and shape, large equipment is at risk of being scraped by other objects during the lifting, moving, and lowering process using a crane.

[0003] For example, during the process of moving a long-fuselage cleaning machine from the trestle to the ship's cabin, its long fuselage may scrape against the crane's support arm and the external bed during the hoisting and moving process. When it is placed into the ship's cabin and lifted out of the cabin, it may scrape against the side walls of the cabin and the edge of the trestle.

[0004] To avoid the aforementioned problems, existing technologies often attach a rope to the side of the suspended platform or lifting equipment. By pulling the rope in one direction, the lifting equipment can be rotated to a certain extent, thereby changing its position and preventing scraping. However, this method is relatively cumbersome in practice and it is difficult to precisely control the range of rotation of the lifting equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a reversing device for the hoisting process to solve the problem of equipment turning during hoisting.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] The present invention provides a reversing device for a hoisting process, comprising a base for connecting to a cable tray machine and capable of sliding along the cable tray;

[0008] A rotating column fixedly connected to the base is provided below the base, and multiple steering wheels arranged in a circular array are provided on the side of the rotating column;

[0009] The rotating column is cylindrical in shape, with an annular steering groove on its side. Multiple steering wheels are confined within the steering groove, and the steering wheels can roll around the axis of the rotating column along the steering groove. The multiple steering wheels are synchronously driven by a reversing motor mounted on the rotating column.

[0010] Each of the steering wheels is fixed to the outside of an electric hoist, and the bottom of the electric hoist is connected to a hook for connecting the object to be lifted. The electric hoist is responsible for controlling the height of the hook, thereby lifting and lowering the object.

[0011] In this arrangement, multiple electric hoists arranged in a ring have multiple hoisting points distributed in a ring with the object being lifted. These hoisting points limit each other, thereby restricting the orientation and direction of the object being lifted. The redirecting motor is mechanically connected to multiple steering wheels, which can synchronously drive the steering wheels to roll and change their positions within the steering groove. This synchronously changes the positions of the electric hoists and the hoisting points below them, thereby causing the object to rotate and change its orientation and direction.

[0012] As a preferred embodiment of the present invention, adjacent steering wheels are fixedly connected to each other by an arc-shaped lateral connecting arm. The lateral connecting arm can limit the distance between adjacent steering wheels, thereby avoiding misalignment caused by the travel error between multiple steering wheels during rolling, and thus changing the relative position of the lifting point below the electric hoist, causing the lifted object to tilt.

[0013] On the other hand, the end of the lateral connecting arm is fixed to the steering wheel by a pin.

[0014] As a preferred embodiment of the present invention, the rotating column inside the steering groove is provided with an annular limiting groove, a rotating ring is provided in the limiting groove, the rotating ring is restricted in the limiting groove, and a sliding wheel is provided on the rotating ring, the sliding wheel is in contact with the inner wall of the limiting groove, so that the rotating ring can slide in contact with the inner wall of the limiting groove.

[0015] The outer side of the rotating ring is provided with connectors arranged in a ring array. The connectors extend outward through the limiting groove and are fixed to the inner side of the steering wheel by a transverse connecting arm.

[0016] The connection between the lateral connecting arm, the steering wheel, and the rotating ring is a movable riveting, and the rivet is axially vertical, so that the lateral connecting arm can swing laterally to a certain extent at the riveting point.

[0017] As a preferred embodiment of the present invention, the steering wheel includes an inner roller and an outer housing. The roller is rotatably connected to the inside of the housing. The housing has connection points on both sides and the inner side. The connection points on both sides are used to connect with the lateral connecting arm by pins, and the connection points on the inner side are used to rivet with the transverse connecting arm. The electric hoist is fixed to the outside of the housing.

[0018] As a preferred embodiment of the present invention, the top of the steering wheel is provided with a limiting top cover, the outer side of the steering groove is provided with an annular lower limiting edge higher than the bottom of the housing, and the outer side of the limiting top cover is provided with an annular upper limiting edge lower than the top of the housing.

[0019] The upper limit edge and the lower limit edge together limit the outer side of the housing to prevent the housing from deviating outward.

[0020] As a preferred embodiment of the present invention, the outer side of the housing is provided with an anti-wear roller, which contacts the inner side of the upper limit edge and the lower limit edge and rolls synchronously when the steering wheel moves, thereby reducing the friction between the housing and the upper limit edge and the lower limit edge.

[0021] In a preferred embodiment of the present invention, the upper part of the limiting top cover is connected to the rotating column via a hydraulic rod, and the extension and retraction of the hydraulic rod can drive the limiting top cover to move up and down.

[0022] As a preferred embodiment of the present invention, the roller is gear-shaped in whole, its rolling surface is toothed, and the steering groove is provided with a toothed structure that meshes with the roller;

[0023] The limiting top cover is rotatably connected to an annular drive gear ring, and the lower surface and inner side of the drive gear ring are provided with tooth-like structures.

[0024] The toothed structure on the lower surface of the drive gear ring meshes with the roller, and the toothed structure on the inner side of the drive gear ring rotates mechanically with the redirecting motor through gears.

[0025] As a preferred embodiment of the present invention, the number of teeth and the tooth shape of the tooth structure on the lower surface of the drive gear ring are equal to the number of teeth of the tooth structure in the steering groove.

[0026] As a preferred embodiment of the present invention, multiple electric hoists can be controlled individually, thereby enabling the device to control the relative position of each hoisting point individually.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] The steering device of this invention establishes multiple lifting points between multiple electric hoists and the suspended object. The lifting points are mutually tensioned and balanced, thereby stabilizing the relative posture of the suspended object in the air. The multiple electric hoists are fixed to multiple steering wheels, and the steering wheels are driven by a reversing motor to roll synchronously in a steering groove, thereby changing the position of the electric hoists and the lifting points, thus realizing the rotation of the suspended object itself. This allows for the purposeful change of posture during lifting to avoid collisions with external objects. Compared with the existing technology that uses a traction rope connected to the side of the suspended object to make it rotate, this device can relatively accurately control the rotation direction and angle of the suspended object. The control steps are simple, reliable, and facilitate real-time control of the suspended object's posture. Attached Figure Description

[0029] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] Figure 1 This is an external view of the present invention;

[0031] Figure 2 This is a perspective view of the limiting top cover of the present invention;

[0032] Figure 3 This is a side cross-sectional view of the limiting top cover of the present invention;

[0033] Figure 4 This is a view showing the interaction between the rotating ring and the roller after the limiting top cover is removed in this invention.

[0034] Figure 5 For the present invention Figure 4 Appearance view after removing the rotating ring;

[0035] Figure 6 For the present invention Figure 5 Rear perspective view after removing the steering wheel, side connecting arm, and lateral connecting arm.

[0036] The labels in the diagram represent the following:

[0037] 1-Cable tray, 2-Base, 3-Rotating column, 31-Steering groove, 311-Lower limit edge, 32-Limiting groove, 4-Steering wheel, 41-Roller, 42-Housing, 421-Anti-wear roller, 5-Rotating ring, 51-Sliding wheel, 6-Redirecting motor, 7-Electric hoist, 8-Hook, 9-Side connecting arm, 10-Transverse connecting arm, 11-Limiting top cover, 111-Upper limit edge, 12-Hydraulic rod, 13-Drive gear ring. Detailed Implementation

[0038] 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.

[0039] like Figure 1-6 As shown, the present invention provides a reversing device for a hoisting process, including a base 2 for connecting to a cable tray 1 and capable of sliding along the cable tray 1;

[0040] A rotating column 3 is fixedly connected to the base 2 below the base 2, and multiple steering wheels 4 are arranged in a ring array on the side of the rotating column 3.

[0041] The rotating column 3 is cylindrical in shape, and has an annular steering groove 31 on its side. Multiple steering wheels 4 are all confined within the steering groove 31, and the steering wheels 4 can roll around the axis of the rotating column 3 along the steering groove 31. The multiple steering wheels 4 are synchronously driven by a reversing motor 6 mounted on the rotating column 3.

[0042] Each steering wheel 4 is fixed to the outside of an electric hoist 7. The bottom of the electric hoist 7 is connected to a hook 8, which is used to connect the object to be lifted. The electric hoist 7 is responsible for controlling the height of the hook 8, thereby lifting and lowering the object.

[0043] In this arrangement, multiple electric hoists 7 arranged in a ring have multiple hoisting points distributed in a ring with the object being lifted. These hoisting points limit each other, thereby restricting the orientation and direction of the object being lifted. The redirecting motor 6 is mechanically connected to multiple steering wheels, which can synchronously drive the steering wheels 4 to roll and change their positions within the steering groove 31. This synchronously changes the positions of the electric hoists 7 and the hoisting points below them, thereby causing the object to rotate and change its orientation and direction.

[0044] In this invention, the base 2 is slidably connected to the bridge frame 1, the rotating device is located below the base 2, and the object being lifted is located below the rotating device. The base 2 can be driven to slide along the bridge frame 1 by the conventional lateral drive of the lifting mechanism of the bridge crane in the prior art, thereby realizing the translation of the object after it is lifted.

[0045] During operation, this device uses multiple electric hoists 7 and hooks 8 to establish multiple lifting points with the object being lifted. These points work together to lift the object off the ground. The vertical tension on the lifting points and the object keeps the ropes below the electric hoists 7 taut, creating a limiting effect that stabilizes the object after it is lifted. To change the object's posture, simply control the reversing motor 6 to drive multiple steering wheels 4 to rotate around the rotating column 3 along the steering groove 31 by a corresponding angle. Since the electric hoists 7 are fixed to the steering wheels 4, the rotation of the steering wheels 4 will... The position of the electric hoist 7 is changed synchronously, thereby causing the suspended object below the device to rotate. Compared with the traditional technology of connecting a traction rope to the side of the suspended object and changing its posture by pulling the traction rope, the advantage of this device is that it can precisely control the rotation angle of the suspended object. By precisely controlling the stroke and direction of movement of the steering wheel 4 through the reversing motor 6, the rotation angle and direction of the suspended object can be accurately operated. This accurately avoids the risk of scratching with external objects during the lifting process, and greatly improves the safety of the lifting process.

[0046] Considering that multiple steering wheels 4 need to move the same distance synchronously and in the same direction when the hoisted object turns, the relative positions of each steering wheel 4 must be fixed. It is necessary to avoid the situation where the stroke of the steering wheels 4 is different, which would cause the relative position of the electric hoist 7 fixed to them to change, resulting in the rotation angle deviation between the hoisting point and the steering wheel 4.

[0047] Furthermore, adjacent steering wheels 4 are fixed to each other by arc-shaped lateral connecting arms 9. The lateral connecting arms 9 can limit the distance between adjacent steering wheels 4, thereby avoiding misalignment caused by the travel error between multiple steering wheels 4 during rolling, which in turn changes the relative position of the lifting point below the electric hoist 7 and causes the lifted object to tilt.

[0048] On the other hand, the end of the lateral connecting arm 9 is fixed to the steering wheel 4 by a pin.

[0049] The present invention can select the number of lifting points, i.e. the number of steering wheels 4, according to the specific shape of the object being lifted and the actual lifting requirements. Therefore, the length of the lateral connecting arm 9 is not unique. When the number of steering wheels 4 is small, the length of the lateral connecting arm 9 is relatively long. When the number of steering wheels 4 is large, the length of the lateral connecting arm 9 is relatively short. The rotating wheel and the lateral connecting arm 9 need to be connected in sequence to form a complete ring structure. The end of the lateral connecting arm 9 is fixed to the steering wheel 4 by a pin, which makes it easy to disassemble and install the steering wheel 4 and the lateral connecting arm 9 for adjustment according to the actual situation.

[0050] Considering that the object being lifted exerts an outward pulling force on the steering wheel 4, a connecting member is needed on the inner side of the steering wheel 4 to balance this pulling force.

[0051] Furthermore, the rotating column 3 inside the steering groove 31 is provided with an annular limiting groove 32, and a rotating ring 5 is provided inside the limiting groove 32. The rotating ring 5 is restricted within the limiting groove 32, and a sliding wheel 51 is provided on the rotating ring 5. The sliding wheel 51 is in contact with the inner wall of the limiting groove 32, so that the rotating ring 5 can slide in contact with the inner wall of the limiting groove 32.

[0052] The outer side of the rotating ring 5 is provided with connectors arranged in a ring array. The connectors extend outward through the limiting groove 32 and are fixed to the inner side of the steering wheel 4 by the transverse connecting arm 10.

[0053] The connection between the transverse connecting arm 10, the steering wheel 4, and the rotating ring 5 is a movable riveting, and the rivet axis is vertical, so that the transverse connecting arm 10 can swing laterally to a certain extent at the riveting point.

[0054] In this device, the hoisted object applies a downward pulling force to the electric hoist 7 via the hook 8. The electric hoist 7 applies a pulling force to the steering wheel 4 facing outward. The steering wheel 4 transmits this pulling force to the rotating ring 5 via the transverse connecting arm 10 on its inner side. The rotating ring 5 then transmits this force to the rotating column 3 for balance. When the steering wheel 4 rolls, the sliding ring can synchronously follow the steering wheel 4 and rotate within the limiting groove 32 due to the traction effect of the transverse connecting arm 10. The sliding wheel 51 provided on the rotating ring 5 is in contact with the inner wall of the limiting groove 32. When the rotating ring 5 rotates, it rolls against the inner wall of the limiting groove 32, thereby reducing the rotational resistance of the rotating ring 5 and reducing the driving resistance of the redirecting motor 6.

[0055] On the other hand, the lateral connecting arm 10 is riveted to the steering wheel 4 and the rotating ring 5, which not only makes it easy to disassemble and assemble when replacing the steering wheel 4, but also gives the lateral connecting arm 10 a certain degree of swing freedom, thereby generating a certain buffering effect when the steering wheel 4 moves and stops, and avoiding rigid collisions.

[0056] Considering that the lateral connecting arm 9, the transverse connecting arm 10, and the electric hoist 7 cannot be directly fixed to the rolling unit of the steering wheel 4.

[0057] Furthermore, the steering wheel 4 includes an internal roller 41 and an external housing 42. The roller 41 is rotatably connected to the inside of the housing 42. The housing 42 has connection points on both sides and the inside. The connection points on both sides are used to connect with the lateral connecting arm by pins, and the connection points on the inside are used to rivet with the transverse connecting arm 10. The electric hoist 7 is fixed to the outside of the housing 42.

[0058] Because the inner side of the housing 42 of the steering wheel 4 is subjected to the inward pulling force of the transverse connecting arm 10, and the outer side is subjected to the outward pulling force of the hoisting object and the electric hoist 7, and the housing 42 is a hollow structure with a roller 41 rotatably connected inside, in order to avoid the housing 42 being stretched and deformed and deviated outward.

[0059] Furthermore, the top of the steering wheel 4 is provided with a limiting top cover 11, the outer side of the steering groove 31 is provided with an annular lower limiting edge 311 that is higher than the bottom of the housing 42, and the outer side of the limiting top cover 11 is provided with an annular upper limiting edge 111 that is lower than the top of the housing 42.

[0060] The upper limit edge 111 and the lower limit edge 311 together limit the outer side of the housing 42 to prevent the housing 42 from deviating outward.

[0061] Furthermore, because the upper limit edge 111 and the lower limit edge 311 in the above scheme limit the outer side of the housing 42, and the housing 42 is in contact with the upper limit edge 111 and the lower limit edge 311, the housing 42 will generate sliding friction relative to the upper limit edge 111 and the lower limit edge 311 when the steering wheel 4 rotates, which will bring about greater resistance. In order to reduce the resistance when the steering wheel 4 is driven, and to protect the housing 42 from wear on its outer side.

[0062] Furthermore, the outer side of the housing 42 is provided with an anti-wear roller 421, which contacts the inner side of the upper limit edge 111 and the lower limit edge 311 and rolls synchronously when the steering wheel 4 moves, thereby reducing the friction between the housing 42 and the upper limit edge 111 and the lower limit edge 311.

[0063] Since the steering wheel 4 is located between the steering groove 31 and the limiting top cover 11, a structure that can drive the limiting top cover 11 to move is required. This allows the limiting top cover 11 to move away from the steering wheel 4 when it is disassembled, and the limiting top cover 11 to press against the top of the multiple steering wheels 4 after the steering wheel 4 is installed, thus achieving the limiting and fixing.

[0064] Furthermore, the upper part of the limiting top cover 11 is connected to the rotating column 3 via a hydraulic rod 12, and the extension and retraction of the hydraulic rod 12 can drive the limiting top cover 11 to move up and down.

[0065] On the other hand, it is necessary to consider how the steering motor 6 can synchronously and precisely control the synchronous rotation of multiple steering wheels 4.

[0066] Furthermore, the roller 41 is gear-shaped as a whole, and its rolling surface has a toothed structure. The steering groove 31 is provided with a toothed structure that meshes with the roller 41.

[0067] A ring-shaped drive gear ring 13 is rotatably connected below the limiting top cover 11. The lower surface and inner side of the drive gear ring 13 are provided with tooth-like structures.

[0068] The toothed structure on the lower surface of the drive gear ring 13 meshes with the roller 41, and the toothed structure on the inner side of the drive gear ring 13 rotates mechanically with the redirecting motor 6 through gears.

[0069] The driving method of the above scheme is that the steering motor drives the gear ring 13 to rotate around the axis of the rotating column 3 through gear control. The gear ring 13 drives multiple steering wheels 4 to rotate in the steering groove 31 through the tooth structure that meshes with the toothed roller 41 on its lower surface. The tooth structure in the limiting groove 32 meshes synchronously with the roller 41, which can further improve the rotation accuracy of each roller 41 and avoid the roller 41 slipping, causing jamming and tooth wear.

[0070] Since the limiting groove 32 and the drive gear ring 13 mesh with the gear-shaped roller 41 at the same time, in order to ensure the effectiveness of the reversing motor 6 transmission and to avoid misalignment and wear between the teeth, it is necessary to limit the number of teeth and the tooth shape of the tooth structure on the lower surface of the drive gear ring to be equal to the number of teeth in the tooth structure in the steering groove 31.

[0071] On the other hand, considering the shape of the object being lifted and the fact that the height of each lifting point may not be consistent during the actual lifting process, and in addition to rotating the object to avoid scraping during the lifting process, it is sometimes necessary to adjust the relative height of each lifting point so that one side of the object is raised or lowered to avoid scraping. Therefore, it is necessary to limit the multiple electric hoists 7 to be individually controllable, so that this device can individually control the relative position of each lifting point, thereby allowing the object to adjust its relative lifting posture more freely.

[0072] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A redirection device for use in a hoisting process, characterized in that: Includes a base (2) for connecting to the cable tray (1) and capable of sliding along the cable tray (1); The base (2) is provided with a rotating column (3) fixedly connected to the base (2) below it, and the side of the rotating column (3) is provided with multiple steering wheels (4) arranged in a ring array; The rotating column (3) is cylindrical in shape and has an annular steering groove (31) on its side. Multiple steering wheels (4) are all located within the steering groove (31) and can roll around the axis of the rotating column (3) along the steering groove (31). Multiple steering wheels (4) are synchronously driven by a reversing motor (6) located on the rotating column (3). Each of the steering wheels (4) is fixed to the outside of an electric hoist (7), and the bottom of the electric hoist (7) is connected to a hook (8). The hook (8) is used to connect the object to be lifted, and the electric hoist (7) is responsible for controlling the height of the hook (8) so as to lift and lower the object. Among them, there are multiple hoisting points arranged in a ring between the multiple electric hoists (7) and the hoisted object. The multiple hoisting points limit each other and thus restrict the position and orientation of the hoisted object. The redirecting motor (6) is mechanically connected to the multiple steering wheels (4) and can synchronously drive the multiple steering wheels (4) to roll and change their positions in the steering groove (31), thereby synchronously changing the position of the electric hoist (7) and the hoisting point between the electric hoist (7) and the hoisted object, thereby causing the hoisted object to rotate and change its position and orientation.

2. A redirection device for hoisting processes according to claim 1, characterized in that: The adjacent steering wheels (4) are fixed to each other by an arc-shaped lateral connecting arm (9). The lateral connecting arm (9) can limit the distance between the adjacent steering wheels (4), thereby avoiding misalignment caused by the travel error between the multiple steering wheels (4) during the rolling process, and thus changing the relative position of the lifting point below the electric hoist (7) and causing the lifted object to tilt. On the other hand, the end of the lateral connecting arm (9) is fixed to the steering wheel (4) by a pin.

3. A redirection device for hoisting processes according to claim 2, characterized in that: An annular limiting groove (32) is provided on the rotating column (3) inside the steering groove (31). A rotating ring (5) is provided in the limiting groove (32). The rotating ring (5) is restricted within the limiting groove (32). A sliding wheel (51) is provided on the rotating ring (5). The sliding wheel (51) is in contact with the inner wall of the limiting groove (32), so that the rotating ring (5) can slide in contact with the inner wall of the limiting groove (32). The outer side of the rotating ring (5) is provided with connectors arranged in a ring array. The connectors extend outward through the limiting groove (32) and are fixed to the inner side of the steering wheel (4) by a transverse connecting arm (10). The connection between the transverse connecting arm (10), the steering wheel (4), and the rotating ring (5) is a movable riveting, and the rivet is vertical in axis, so that the transverse connecting arm (10) can swing laterally at a certain amplitude at the riveting point.

4. A redirection device for hoisting processes according to claim 3, characterized in that: The steering wheel (4) includes an inner roller (41) and an outer housing (42). The roller (41) is rotatably connected to the inside of the housing (42). The housing (42) has connection points on both sides and the inside. The connection points on both sides are used to connect with the lateral connecting arm (9) by pins, and the connection points on the inside are used to rivet with the transverse connecting arm (10). The electric hoist (7) is fixed to the outside of the housing (42).

5. A redirection device for hoisting processes according to claim 4, characterized in that: The steering wheel (4) is provided with a limiting top cover (11) at the top, the steering groove (31) is provided with an annular lower limiting edge (311) higher than the bottom of the housing (42) on the outside, and the limiting top cover (11) is provided with an annular upper limiting edge (111) lower than the top of the housing (42) on the outside. The upper limit edge (111) and the lower limit edge (311) together limit the outer side of the housing (42) to prevent the housing (42) from deviating outward.

6. A redirection device for hoisting processes according to claim 5, characterized in that: The outer side of the housing (42) is provided with an anti-wear roller (421). The anti-wear roller (421) contacts the inner side of the upper limit edge (111) and the lower limit edge (311) and rolls synchronously when the steering wheel (4) moves, thereby reducing the friction between the housing (42) and the upper limit edge (111) and the lower limit edge (311).

7. A redirection device for hoisting processes according to claim 6, characterized in that: The upper part of the limiting top cover (11) is connected to the rotating column (3) via a hydraulic rod (12), and the extension and retraction of the hydraulic rod (12) can drive the limiting top cover (11) to move up and down.

8. A redirection device for hoisting processes according to claim 7, characterized in that: The roller (41) is gear-shaped in whole, and its rolling surface is toothed. The steering groove (31) is provided with a toothed structure that meshes with the roller (41). The limiting top cover (11) is rotatably connected to an annular drive gear ring (13), and the lower surface and inner side of the drive gear ring (13) are provided with tooth-like structures. The toothed structure on the lower surface of the drive gear ring (13) meshes with the roller (41), and the toothed structure on the inner side of the drive gear ring (13) rotates mechanically with the redirecting motor (6) through gears.

9. A redirection device for hoisting processes according to claim 8, characterized in that: The number of teeth and the tooth shape of the tooth structure on the lower surface of the drive tooth ring (13) are equal to the number of teeth of the tooth structure in the steering groove (31).

10. A redirection device for hoisting processes according to claim 9, characterized in that: Multiple electric hoists (7) can be controlled individually, thereby enabling the device to control the relative position of each hoisting point individually.

Images