Cable unreeling device and method for frameless cable reel

Abstract

The present invention discloses a cable releasing device and a cable releasing method for a frameless cable reel. A cable releasing tooling and a rotating shaft assembly are provided in the frameless cable reel cable releasing tooling. The cable releasing tooling includes a lifting assembly, a main body frame and a moving assembly. The lifting assembly can lift and lower the rotating shaft assembly, and the moving assembly can move the cable releasing tooling to a suitable position. The rotating shaft assembly includes a central rotating shaft, a fixed clamp and a tapered coupling. By using the tapered coupling and the fixed clamp, the central rotating shaft is coaxially aligned with the central holes of frameless cable reels with various hole diameters, avoiding the technical problem of easy shaking during the cable releasing process of the frameless cable reel. At the same time, the cable releasing method of this cable releasing tooling is convenient, simple, safe and reliable, and has strong versatility, effectively saving working time, reducing the labor intensity of workers, and improving the construction quality and efficiency.

Description

Technical Field

[0001] The present invention relates to the field of ship cable laying, and in particular to a cable releasing device and a cable releasing method for a frameless cable reel. Background Art

[0002] There are many types and specifications of ship cables, which are distributed in various cabins of the whole ship. Cable laying is very important for ship electrical construction. For some conventional power cables and signal cables, steel cable reels with supporting outer frames are generally used for storage and delivery. For some large-section cables, network cables, coaxial cables, radio frequency cables, and flexible waveguides, etc., frameless cable drums are used for storage and supply.

[0003] Since the frameless cable reel has no supporting outer frame, its cable winding turntable is in direct contact with the ship deck surface or the dock ground plane, resulting in the inability of the cable turntable to rotate. Because large-section cables are heavy and relatively hard, they cannot be coiled and carried. In the prior art, the cable releasing method for large-section cables is to first hoist a large vertical cable releasing support on a truck with a crane, transport the large vertical cable releasing support to the dock by the truck, and then, according to the need of cable laying, hoist the large vertical cable releasing support to an appropriate position on the dock or the ship deck by the dock crane, and then hoist the frameless cable reel and place it on the large vertical cable releasing support to ensure that the cable reel is separated from the deck or the ground. When the cable laying in one area is completed, the large vertical cable releasing support for the cable is hoisted to another area for cable laying. After all the cables are laid, the large vertical cable releasing support is pulled back and stored in the workshop by the crane and the truck.

[0004] During the cable laying process of large-section cables, the center of the frameless cable reel rotates frictionally around the central rotating shaft, and the outer diameter size of the configured central rotating shaft can only match one specification of the cable reel. As Figure 1 shown, when the central hole diameter of the frameless cable reel is large, due to the non-coaxiality of the central rotating shaft and the central hole of the frameless cable reel, under the traction of external force, the frameless cable reel rotates eccentrically during the rotation around the central rotating shaft, causing the large vertical cable releasing support to shake and be prone to tipping over; the large vertical cable releasing support is relatively heavy, and a crane and a truck are needed for handling or displacement, which brings great difficulties to the cable laying work, and during the cable laying process of large-section cables, more manpower is required, a large amount of time is consumed, and the efficiency is low. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the present application provides a cable releasing device and a cable releasing method for a frameless cable reel to solve the technical problems of low efficiency and easy shaking of the cable releasing support in the cable releasing of the frameless cable reel in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: A cable releasing device for a frameless cable reel, comprising two cable releasing toolings and a rotating shaft assembly. The two cable releasing toolings have the same structure. Each cable releasing tooling includes a lifting assembly, a main body frame, and a moving assembly. The lifting assembly is arranged on the main body frame for lifting and lowering the rotating shaft assembly. The moving assembly is arranged at the bottom of the main body frame for moving the main body frame;

[0007] The rotating shaft assembly includes a central rotating shaft, two tapered couplings, and two fixing clamps. The central rotating shaft is used to pass through the central hole of the frameless cable reel. The two tapered couplings have the same structural dimensions. A through hole is provided at the central axis position of the tapered coupling, and the inner diameter of the through hole matches the outer diameter of the rotating shaft. The smallest tapered surfaces of the two tapered couplings are arranged opposite to each other and sleeved on the central rotating shaft. The minimum diameter of the tapered surface of the tapered coupling is smaller than the inner diameter of the central hole of the smallest model of the frameless cable reel, and the maximum diameter of the tapered surface of the tapered coupling is larger than the inner diameter of the central hole of the largest model of the frameless cable reel. The two fixing clamps have the same structural dimensions. The two fixing clamps are sleeved on both ends of the central rotating shaft and are respectively located outside the largest tapered surfaces of the two tapered couplings. The fixing clamps are used to fix the tapered couplings pushed into the central hole of the frameless cable reel;

[0008] The lifting assembly includes a longitudinal adjustment assembly. The longitudinal adjustment assembly includes two bearings with adjustable spacing. Both ends of the central rotating shaft are placed between the two bearings in the longitudinal adjustment assembly.

[0009] In an implementation scheme, the fixing clamp includes two semi-circular opening and closing rings, anti-loosening screws, connecting pieces, wing nuts, fastening bolts, and second gaskets. Anti-loosening screws are provided at the center of the plane of the opening and closing rings, and the anti-loosening screws can rotate on the opening and closing rings. One ends of the two semi-circular opening and closing rings are connected as a whole through fixing pins, and the other ends are respectively provided with connecting pieces with U-shaped grooves. The fastening bolts are provided with threads. A rotating shaft is arranged on one connecting piece in the direction parallel to the axis of the central rotating shaft. A circular hole two is provided at one end of the fastening bolt, and the size of the circular hole two matches the outer diameter of the rotating shaft. The rotating shaft passes through the circular hole two to connect the fastening bolt and the connecting piece. Threads are provided in the U-shaped groove of the other connecting piece, and the threads in the U-shaped groove match the threads on the fastening bolt. A wing nut is threadedly connected to the end of the fastening bolt away from the connecting piece, and a second gasket is arranged between the wing nut and the connecting piece

[0010] In one embodiment, the longitudinal adjustment assembly further includes two dovetail chutes and one dovetail guide rail. The bearings are all mounted on the bearing brackets. The two bearings are respectively fixed on the upper planes of the two dovetail chutes through the bearing brackets. Nuts are provided on the central axes of the two dovetail chutes. The two dovetail chutes are mounted on the dovetail guide rail. A long strip-shaped channel is provided in the middle of the dovetail guide rail. An adjustment screw rod is provided in the long strip-shaped channel. The two ends of the adjustment screw rod are provided with left-hand and right-hand threads. The adjustment screw rod is in close fit with the nuts in the two dovetail chutes.

[0011] In one embodiment, the jacking assembly further includes a jacking panel, a lifting guide rod and a lifting component. The dovetail guide rail is fixedly mounted on the jacking panel through an Allen screw. A lifting component is provided on the lower surface of the jacking panel for lifting the jacking panel. A lifting guide rod is provided on the lower surface of the jacking panel. A guide tube is vertically penetrated through the position corresponding to the lifting guide rod at the top of the main body frame. A platform is provided in the middle of the top of the main body frame for placing the lifting component.

[0012] In one embodiment, the moving assembly includes a plurality of liftable rollers. A plurality of support feet with adjustable heights are provided at the bottom of the main body frame.

[0013] In one embodiment, the main body frame is in the structure of a right trapezoid. The side where the inclined surface of the right trapezoid is located is defined as the second side. The side where the vertical surface opposite to the inclined surface is located is defined as the first side. The two sides connecting the two vertical surfaces of the inclined surface are respectively defined as the front side and the rear side.

[0014] In one embodiment, reinforcing cross arms are fixedly installed at the same horizontal positions on the front and rear sides of the main body frame. The moving assembly further includes a handwheel, a lead screw, a cross arm, a first vertical connecting rod, a lead screw support frame, a longitudinal support cross arm, a second vertical connecting rod, and a transverse connecting rod. A handle is provided on one side of the handwheel. An installation pipe is provided at the center position of the side of the handwheel opposite to the handle. A positioning hole is provided on the installation pipe. A lead screw installation plate is fixedly installed on the second side of the main body frame. An installation hole is provided at the center position of the lead screw installation plate. The first end of the lead screw is a convex structure without a thread. The part of the convex structure near the end is matched with the installation pipe. A threaded hole is provided on the part of the convex structure near the end. The diameter of the part of the convex structure near the end is larger than the inner diameter of the installation hole. The diameter of the part of the convex structure near the threaded section is smaller than the inner diameter of the installation hole. The first end of the lead screw passes through the installation hole of the lead screw installation plate and is inserted into the installation pipe, and is tightly connected with the installation pipe. The threaded hole coincides with the positioning hole on the installation pipe and is connected by a fastening screw. A cross arm is provided on the threaded section of the lead screw. The cross arm is a cuboid with a screw hole provided at the center position. The screw hole of the cross arm is matched with the thread of the lead screw. The second end of the lead screw is connected to the lead screw support frame. The lead screw support frame is perpendicular to the central axis of the lead screw. The bottom of the lead screw support frame is welded to the longitudinal support cross arm. The longitudinal support cross arm is an angle iron with a length equal to the front and rear width of the main body frame. The bottom of the longitudinal support cross arm is welded to the reinforcing cross arms on the front and rear sides of the main body frame. Transverse connecting rods are provided below the reinforcing cross arms on the front and rear sides. The transverse connecting rods are rotatably connected to the reinforcing cross arms through the second vertical connecting rods. Two rollers are respectively installed at both ends of the transverse connecting rod. The rollers together with the base are welded below the transverse connecting rod. A long strip-shaped chute is provided on the upper side of the first vertical connecting rod. The lower end of the first vertical connecting rod is fixedly connected to the transverse connecting rod. The first vertical connecting rod and the second vertical connecting rod are arranged in parallel. The middle part of the lower side of the first vertical connecting rod is rotatably connected to the reinforcing cross arm through a pin shaft. Rotating shafts are provided at both the front and rear ends of the cross arm. The rotating shafts at both the front and rear ends pass through the chute on the upper side of the first vertical connecting rod. Third threaded sections are provided on the parts of the rotating shafts exceeding the chute. The third threaded sections are connected to nuts. When the cross arm moves on the threaded section of the lead screw, the cross arm can drive the rotating shafts to slide up and down in the chute on the upper side of the first vertical connecting rod, driving the first vertical connecting rod to rotate around the pin shaft, thereby lifting and lowering the rollers. When the first vertical connecting rod is perpendicular to the horizontal plane, the first vertical connecting rod closely adheres to the side surface of the longitudinal support cross arm.

[0015] In one embodiment, the roller near the first side is a directional roller, the roller near the second side is a universal roller, and the rollers are all thickened polyurethane wheels.

[0016] In one embodiment, the handle is foldable, and the material of the handwheel is aluminum alloy material.

[0017] The present invention also discloses a cable paying-off method for a frameless cable reel cable, adopting the cable paying-off device of the above-mentioned frameless cable reel, which is characterized by including the following steps:

[0018] S1. Push two cable laying tools to appropriate positions on both sides of the frameless cable reel to be laid through the moving component, and place the cable laying tools stably.

[0019] S2. Adjust the distance between the two bearings at the top of the cable laying tool according to the diameter of the central rotating shaft.

[0020] S3. Pass the central rotating shaft through the central hole of the frameless cable reel. Orient the small end of the two tapered couplings towards the frameless cable reel, and respectively sleeved them from both ends of the central rotating shaft and push them into the central hole of the frameless cable reel.

[0021] S4. Fine-tune the placement position of the cable laying tool so that the central rotating shaft is placed between the two bearings at the top of the cable laying tool.

[0022] S5. Buckle the two fixed clamps on both ends of the central rotating shaft respectively, slide the two fixed clamps towards the middle of the central rotating shaft until the fixed clamps are closely attached to the large end face of the tapered coupling, and fix the fixed clamps on the central rotating shaft to make the tapered surface of the tapered coupling in close contact with the central hole of the frameless cable reel to prevent the tapered coupling from shifting when the cable reel rotates.

[0023] S6. Operate the jacking components on both sides of the frameless cable reel to lift the frameless cable reel upwards so that the frameless cable reel leaves the ground and can rotate freely.

[0024] S7. Conduct horizontal adjustment, and respectively operate the jacking components on both sides for fine-tuning to make the central rotating shaft in a horizontal position.

[0025] S8. The construction worker drives the frameless cable reel to rotate by pulling the cable. Driven by the frameless cable reel, the central rotating shaft rotates between the two bearings at the top of the cable laying tool.

[0026] S9. When the cable pulling and laying is completed, operate the jacking component to lower the cable reel to the ground plane, remove the central rotating shaft, roll the empty cable reel to the construction corner, and repeat S1 - S8 to carry out the installation and pulling and laying construction of the next cable reel.

[0027] Compared with the prior art, the beneficial effects in the present application are as follows:

[0028] In the cable unwinding device of the frameless cable reel, a cable unwinding tooling and a rotating shaft assembly are provided. The cable unwinding tooling includes a jacking assembly, a main body frame, and a moving assembly. The jacking assembly can lift and lower the rotating shaft assembly, and the moving assembly can move the cable unwinding tooling to a suitable position. The rotating shaft assembly includes a central rotating shaft, a fixed clamp, and a tapered coupling. By using the tapered coupling and the fixed clamp, the central rotating shaft is coaxially aligned with the central holes of frameless cable reels with various apertures, avoiding the technical problem of easy shaking during the cable unwinding process of the frameless cable reel. At the same time, the cable unwinding method of this cable unwinding tooling is convenient, simple, safe and reliable, and has strong versatility, effectively saving working time, reducing the labor intensity of workers, and improving the construction quality and efficiency. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the non-coaxial state of the frameless cable reel and the central rotating shaft in the prior art;

[0031] Figure 2 Schematic diagram of the cable unwinding tooling structure in the embodiment of the present application;

[0032] Figure 3 Schematic diagram of the cable reel jacking assembly structure in the embodiment of the present application;

[0033] Figure 4 Longitudinal adjustment component diagram in the embodiment of the present application;

[0034] Figure 5 Left view of the main body frame in the embodiment of the present application;

[0035] Figure 6 Exploded view of the moving assembly structure in the embodiment of the present application;

[0036] Figure 7 Schematic diagram of the rotating shaft assembly structure in the embodiment of the present application;

[0037] Figure 8 Schematic diagram of the fixed clamp structure in the embodiment of the present application;

[0038] Figure 9 Schematic diagram of the state where the moving rollers of the cable unwinding tooling are propped up in the embodiment of the present application;

[0039] Figure 10 Schematic diagram of the state where the moving rollers of the cable unwinding tooling are retracted in the embodiment of the present application;

[0040] Figure 11 Schematic diagram of the state where the frameless cable reel in the embodiment of the present application is not raised;

[0041] Figure 12 Schematic diagram of the state where the frameless cable reel in the embodiment of the present application is raised. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0044] As Figure 2-12 shown, a cable releasing device of a frameless cable reel includes two cable releasing toolings 50 and a rotating shaft assembly 60, and the two cable releasing toolings 50 have the same structure. As Figure 2 shown, the cable releasing tooling 50 includes a lifting assembly 1, a main body frame 2 and a moving assembly 3. The lifting assembly 1 is arranged on the main body frame 2 for lifting and lowering the rotating shaft assembly 60, and the moving assembly 3 is used for moving the main body frame 2.

[0045] As Figure 3 shown, the lifting assembly 1 includes a longitudinal adjustment assembly 4, a lifting panel 5, lifting guide rods 6 and a lifting component 7. The longitudinal adjustment assembly 4 is arranged on the upper surface of the lifting panel 5. A lifting component 7 is arranged at the center position of the lower surface of the lifting panel 5 for lifting and lowering the lifting panel 5. Lifting guide rods 6 are arranged on the lower surface of the lifting panel 5. In this embodiment, the lifting panel 5 is a rectangular panel. The longitudinal adjustment assembly 4 is arranged on the central axis of the short side of the lifting panel 5, and the lifting guide rods 6 are symmetrically arranged at the four corners of the lower surface of the lifting panel 5.

[0046] As Figure 4As shown in the figure, the longitudinal adjustment assembly 4 includes two bearings 8 with adjustable spacing, two dovetail chutes 10, and a dovetail guide rail 11. The bearings 8 are all mounted on the bearing brackets 9. The two bearings 8 are respectively fixed on the longitudinal central axes of the upper planes of the two dovetail chutes 10 through the bearing brackets 9. Nuts are provided on the central axes of the inner grooves of the two dovetail chutes 10. The two dovetail chutes 10 are mounted on the dovetail guide rail 11. The dovetail guide rail 11 is fixedly mounted on the lifting panel 5 through the hexagon socket head cap screws 12. A long strip-shaped channel is provided in the middle of the dovetail guide rail 11. An adjusting screw rod 13 is provided in the long strip-shaped channel. The two ends of the adjusting screw rod 13 are provided with left and right hand threads. The adjusting screw rod 13 is closely matched with the nuts in the inner grooves of the two dovetail chutes 10. The spacing between the two bearings can be adjusted by rotating the adjusting screw rod 13. In this embodiment, the bearing 8 is a heavy-duty support bearing with thickened double-row rollers to bear the weight of the cable and the frameless cable reel. The end of the adjusting screw rod 13 is a square tenon, and the square tenon protrudes from the end of the dovetail guide rail 11. The adjusting screw rod 13 can be rotated by pulling the square tenon to adjust the spacing between the two bearings.

[0047] As Figure 5 shown in the figure, four guide tubes 14 are vertically penetrated through the four corners of the top of the main body frame 2 respectively. The guide tubes 14 are thick-walled tubes with a certain length, which are used to place the four lifting guide rods 6 to ensure that the lifting assembly 1 can lift vertically and stably. A platform 24 is provided in the middle of the top of the main body frame 2. The platform 24 is a thickened steel plate, which is used to place the lifting component 7. A plurality of support feet 15 with adjustable height are provided at the bottom of the main body frame 2. In this embodiment, 4 support feet 15 are provided at the bottom of the main body frame 2, and the height of the support feet 15 can be adjusted according to the construction site environment. In this embodiment, the main body frame 2 is a right trapezoidal structure. The side where the inclined surface of the right trapezoid is located is defined as the second side, and the side where the vertical surface opposite to the inclined surface is located is defined as the first side. The two sides connecting the two vertical surfaces of the inclined surface are respectively the front side and the rear side. The included angle between the inclined surface and the horizontal plane is 120°. The support feet 15 are provided with adjusting threads, and the lifting component 7 is a hydraulic jack.

[0048] For convenient movement, the moving assembly 3 is arranged at the bottom of the main body frame 2. The moving assembly 3 includes a plurality of liftable rollers 24. When it is necessary to move the main body frame 2, the rollers 24 descend to contact the ground, and the support feet 15 rise to leave the ground, which is convenient for pushing the cable laying tooling 50. When the cable laying tooling 50 reaches the destination, the rollers 24 rise to leave the ground, and the support feet 15 descend to contact the ground, which is convenient for stably placing the main body frame 2.

[0049] As Figure 5 、 6As shown in the figure, in this embodiment, reinforcing crossbeams 40 are fixedly installed at the same horizontal positions on the front and rear sides of the main body frame 2. The moving component 3 further includes a handwheel 16, a lead screw 17, a crossbeam 18, a vertical connecting rod one 19, a lead screw support frame 20, a longitudinal support beam 21, a vertical connecting rod two 22, and a transverse connecting rod 23. A handle is provided on one side of the handwheel 16, and the handle is foldable. The handwheel is made of aluminum alloy material. An installation pipe is provided at the center position of the side of the handwheel 16 opposite to the handle. Radial positioning holes 26 are provided on the installation pipe. A lead screw installation plate 25 is fixedly installed on the first side of the main body frame 2. An installation hole is provided at the center position of the lead screw installation plate 25. The first end of the lead screw 17 is a convex structure without threads. The part of the convex structure close to the first side is matched with the installation pipe. A radial threaded hole 27 is provided on the part of the convex structure close to the first side. The first end of the lead screw 17 passes through the installation hole of the lead screw installation plate 25 and is inserted into the installation pipe, and is tightly connected with the installation pipe. The radial threaded hole 27 coincides with the positioning hole 26 on the installation pipe and is connected by a fastening screw 28. A crossbeam 18 is provided on the threaded section of the lead screw 17. The crossbeam 18 is a cuboid with a screw hole provided at the center position. The screw hole of the crossbeam 18 is matched with the thread of the lead screw 17. The second end of the lead screw 17 is connected to the lead screw support frame 20. The lead screw support frame 20 is perpendicular to the central axis of the lead screw 17. The bottom of the lead screw support frame 20 is welded to the longitudinal support beam 21. The longitudinal support beam 21 is an angle iron with a length equal to the front and rear width of the main body frame 2. The bottom of the longitudinal support beam 21 is welded to the reinforcing crossbeams 40 on the front and rear sides of the main body frame 2.

[0050] A smooth rod portion with a diameter smaller than the outer diameter of the threaded section of the lead screw is provided at the tail of the second end of the lead screw 17. A second threaded section is provided at the end of the smooth rod portion. A through hole is provided at the end of the second threaded section for installing a split pin 33. A circular hole is provided in the upper part of the lead screw support frame 20, and its hole diameter is larger than the diameter of the smooth rod portion of the second end of the lead screw 17. The smooth rod portion of the second end of the lead screw 17 passes through the circular hole. A gasket 31, a nut 32, and a split pin 33 are sequentially installed on the second threaded section to connect the lead screw 17 and the lead screw support frame 20.

[0051] Below the cross arms 40 strengthened on both the front and rear sides, there are horizontal connecting rods 23 provided. The horizontal connecting rods 23 are rotatably connected to the strengthened cross arms 40 through the vertical connecting rods II 22. Two rollers 24 are respectively installed at both ends of the horizontal connecting rod 23. The rollers 24 are made of thickened polyurethane wheels. The roller near the first side is a directional roller, and the roller near the second side is a universal roller. The rollers 24 together with the base are welded below the horizontal connecting rod 23. On the upper side of the vertical connecting rod I 19, there is a long strip-shaped chute. The end part at the lower side of the vertical connecting rod I 19 is fixedly connected to the horizontal connecting rod 23. The vertical connecting rod I 19 is arranged in parallel with the vertical connecting rod II 22. The middle part at the lower side of the vertical connecting rod I 19 is rotatably connected to the strengthened cross arm 40 through a pin shaft. Rotating shafts 30 are provided at both the front and rear ends of the cross arm 18. The rotating shafts 30 at both the front and rear ends pass through the chute of the vertical connecting rod I 19. Third thread segments are provided on the parts of the rotating shafts 30 exceeding the chute, and the third thread segments are connected to nuts 29. When the cross arm 18 moves on the thread segment of the lead screw 17, the cross arm 18 can drive the rotating shaft 30 to slide up and down in the chute on the upper side of the vertical connecting rod I 19, drive the vertical connecting rod I 19 to rotate around the pin shaft, and the rotation of the vertical connecting rod I 19 drives the vertical connecting rod II 22 to rise, thereby lifting and lowering the rollers 24. When the vertical connecting rod I 19 is perpendicular to the horizontal plane, the vertical connecting rod I 19 closely adheres to the side surface of the longitudinal support arm 21.

[0052] As Figure 7 shown, the rotating shaft assembly 60 includes a central rotating shaft 34, two fixed clamps 35 and two tapered couplings 36. The two fixed clamps 35 are sleeved on both ends of the central rotating shaft 34. Two tapered couplings 36 are sleeved on the central rotating shaft 34 between the two fixed clamps 35. The structural dimensions of the two tapered couplings 36 are the same, and the structural dimensions of the two fixed clamps 35 are the same. The minimum tapered surfaces of the two tapered couplings 36 are arranged oppositely. A through hole is provided at the central axis position of the tapered coupling 36. The inner diameter of the through hole matches the outer diameter D1 of the rotating shaft 34. The minimum tapered diameter D2 of the tapered surface of the tapered coupling 36 is smaller than the inner diameter of the central hole of the smallest model of the frameless cable reel 51, and the maximum tapered diameter D3 of the tapered surface of the tapered coupling 36 is larger than the inner diameter of the central hole of the largest model of the frameless cable reel 51. As Figure 11 、 12 shown, the central rotating shaft 34 can pass through the central hole of the frameless cable reel. Both ends of the central rotating shaft 34 are placed on two bearings 8 in the longitudinal adjustment assembly 4. The central rotating shaft 34 is a thick-walled seamless steel pipe. The specification of the seamless steel pipe is selected according to the width and weight of the frameless cable reel to ensure that the seamless steel pipe has a certain bearing capacity and can meet the load compliance requirements. The length L1 of the central rotating shaft 34 is greater than the width of the frameless cable reel.

[0053] As Figure 8As shown in the figure, the fixed clamp 35 includes two semi-circular opening and closing rings 38, anti-loosening screws 39, connecting members 40, wing nuts 42, fastening bolts 43 and second gaskets 31b. Anti-loosening screws 39 are provided at the plane centers of the opening and closing rings 38. The anti-loosening screws 39 can rotate on the opening and closing rings 38. One ends of the two semi-circular opening and closing rings 38 are integrally connected by a fixed pin 37. The other ends are respectively provided with connecting members 40 with U-shaped grooves. Threads are provided on the fastening bolts 43. A rotating shaft 41 is provided on one side connecting member 40 in a direction parallel to the axis of the central rotating shaft 34. One end of the fastening bolt 43 is provided with a second circular hole. The size of the second circular hole matches the outer diameter of the rotating shaft 41. The rotating shaft 41 passes through the second circular hole to connect the fastening bolt 43 and the connecting member 40. Threads are provided in the U-shaped groove of the other side connecting member 40. The threads in the U-shaped groove match the threads on the fastening bolts 43. A wing nut 42 is threadedly connected to the end of the fastening bolt 43 away from the connecting member 40. A second gasket 31b is provided between the wing nut 42 and the connecting member 40.

[0054] When using the rotating shaft assembly 60, first pass the central rotating shaft 34 through the central hole of the frameless cable reel 51. Orient the small head ends of the two tapered couplings 36 towards the frameless cable reel 51, and respectively sleeve them from both ends of the central rotating shaft 34 and push them into the central hole of the frameless cable reel 51. Place the central rotating shaft 34 between the two bearings 8 at the top of the cable paying-off tooling 50. Rotate the anti-loosening screw 39 on the fixed clamp 35 counterclockwise so that 2 - 3 threads of the anti-loosening screw 39 expose from the end face of the opening and closing ring 38. Rotate the wing nut 42 on the fastening bolt 43 counterclockwise to open the two opening and closing rings 38 of the fixed clamp 35. Fasten the two fixed clamps 35 to both ends of the central rotating shaft 34 respectively. Slide the two fixed clamps 35 towards the middle of the central rotating shaft 34 respectively so that the threaded end of the anti-loosening screw 39 on the fixed clamp 35 closely adheres to the large head end face of the tapered coupling 36. Place the fastening bolt 43 on the fixed clamp 35 in the U-shaped groove of the lower end connecting member 40 of the opening and closing ring 38. Rotate the wing nut 42 clockwise to make the two opening and closing rings tighten inward, and fix the fixed clamp 35 on the central rotating shaft 34. Tighten the anti-loosening screw 39 clockwise to apply a lasting thrust to the tapered coupling 36. As Figure 11 、 12 shown in the figure, make the tapered surface of the tapered coupling 36 in close contact with the central hole of the frameless cable reel 51 to prevent the tapered coupling from shifting when the cable reel rotates. According to different stored cable models and specifications, the aperture of the central hole and the size of the turntable diameter of the frameless cable reel 51 are also different. By using the tapered coupling 36 and the fixed clamp 35, the central rotating shaft 34 is coaxially aligned with the cable reel to ensure that the cable reel 51 rotates smoothly and without obstruction. When paying off the cable, the central rotating shaft 34 rotates between the two bearings 8 at the top of the cable paying-off tooling 50, so that the cable 52 can be conveniently pulled out from the cable reel 51 and laid to the designated area.

[0055] A cable release method for a frameless cable reel cable, using the cable release device of the above-mentioned frameless cable reel, includes the following steps:

[0056] S1. Push the two cable release toolings 50 to appropriate positions on both sides of the to-be-laid frameless cable reel 51 through the moving component 3, and place the cable release toolings 50 stably;

[0057] S2. Adjust the distance between the two bearings 8 at the top of the cable release tooling 50 according to the diameter of the central rotating shaft 24;

[0058] S3. Pass the central rotating shaft 34 through the central hole of the frameless cable reel 51, with the small head ends of the two tapered couplings 36 facing the frameless cable reel 51, and sleeve them into the two ends of the central rotating shaft 34 respectively, and then push them into the central hole of the frameless cable reel 51;

[0059] S4. Fine-tune the placement position of the cable release tooling 50 to place the central rotating shaft 34 between the two bearings 8 at the top of the cable release tooling 50;

[0060] S5. Buckle the two fixing clamps 35 on the two ends of the central rotating shaft 34 respectively, and slide the two fixing clamps 35 towards the middle of the central rotating shaft 34 until the fixing clamps 35 are closely attached to the large head end faces of the tapered couplings 36, and fix the fixing clamps 35 on the central rotating shaft 34, so that the tapered surfaces of the tapered couplings 36 are in close contact with the central hole of the frameless cable reel 51, preventing the tapered couplings from shifting when the cable reel rotates;

[0061] S6. Operate the lifting components 1 on both sides of the frameless cable reel simultaneously, as Figure 12 shown, to lift the lifting panel 5 at the top of the cable release tooling 50 together with the cable reel 51, and the lifting guide rods 6 at the lower end of the lifting panel 5 are kept rising vertically under the constraint of the corresponding guide tubes 14, so that the frameless cable reel leaves the ground and can rotate freely;

[0062] S7. When the frameless cable reel leaves the ground, perform horizontal adjustment, and operate the lifting components 1 on both sides respectively for fine-tuning to make the central rotating shaft 34 in a horizontal position;

[0063] S8. The construction worker drives the frameless cable reel 51 to rotate by pulling the cable 52. Driven by the frameless cable reel 51, the central rotating shaft 34 rotates between the two bearings 8 at the top of the cable release tooling 50;

[0064] S9. When the cable pulling and releasing is completed, operate the lifting component 1 to lower the cable reel 51 to the ground plane, remove the central rotating shaft 34, roll the empty cable reel to the construction corner, and repeat S1 - S8 for the installation and pulling and releasing construction of the next cable reel.

[0065] In this embodiment, step S1 further includes the following steps:

[0066] S11. The rotating shafts 30 at both ends of the cross arm 18 are at the top of the chute at the upper end of the vertical connecting rod 19. Unfold the handle. As shown in the figure, rotate the handwheel 16 clockwise to drive the lead screw 17 to rotate. The cross arm 18 moves towards the second side along the axis direction of the lead screw 17. The rotating shaft 30 moves downward along the chute at the upper end of the vertical connecting rod 19. The upper end of the vertical connecting rod 19 rotates towards the second side around the pin in the middle of the reinforcing cross arm 40 under the push of the cross arm 18, and at the same time drives the transverse connecting rod 23 and the roller 24 to move towards the first side until the vertical connecting rod 19 touches the longitudinal support arm 21. At this time, both the vertical connecting rod 19 and the vertical connecting rod 22 are in a vertical state, and the roller 24 contacts the ground, causing the support feet 15 to rise off the ground, and pushing the two cable laying tools 50 to appropriate positions on both sides of the frameless cable reel 51 to be laid; Figure 9 shown, rotate the handwheel 16 clockwise to drive the lead screw 17 to rotate. The cross arm 18 moves towards the second side along the axis direction of the lead screw 17. The rotating shaft 30 moves downward along the chute at the upper end of the vertical connecting rod 19. The upper end of the vertical connecting rod 19 rotates towards the second side around the pin in the middle of the reinforcing cross arm 40 under the push of the cross arm 18, and at the same time drives the transverse connecting rod 23 and the roller 24 to move towards the first side until the vertical connecting rod 19 touches the longitudinal support arm 21. At this time, both the vertical connecting rod 19 and the vertical connecting rod 22 are in a vertical state, and the roller 24 contacts the ground, causing the support feet 15 to rise off the ground, and pushing the two cable laying tools 50 to appropriate positions on both sides of the frameless cable reel 51 to be laid;

[0067] S12. Rotate the handwheel 16 counterclockwise to drive the lead screw 17 to rotate. As shown in the figure, make the cross arm 18 move towards the first side along the axis direction of the lead screw 17. The rotating shaft 30 moves upward along the chute at the upper end of the vertical connecting rod 19. The upper end of the vertical connecting rod 19 rotates towards the first side around the pin in the middle of the reinforcing cross arm 40 under the push of the cross arm 18, and at the same time drives the transverse connecting rod 23 and the roller 24 to move towards the second side until the roller 24 leaves the ground, making the support feet 15 contact the ground. Adjust the height of the support feet 15 appropriately according to the ground flatness to make the cable laying tool 50 placed stably, and prepare for the cable laying work. Figure 10 shown, rotate the handwheel 16 counterclockwise to drive the lead screw 17 to rotate. As shown in the figure, make the cross arm 18 move towards the first side along the axis direction of the lead screw 17. The rotating shaft 30 moves upward along the chute at the upper end of the vertical connecting rod 19. The upper end of the vertical connecting rod 19 rotates towards the first side around the pin in the middle of the reinforcing cross arm 40 under the push of the cross arm 18, and at the same time drives the transverse connecting rod 23 and the roller 24 to move towards the second side until the roller 24 leaves the ground, making the support feet 15 contact the ground. Adjust the height of the support feet 15 appropriately according to the ground flatness to make the cable laying tool 50 placed stably, and prepare for the cable laying work.

[0068] In this embodiment, step S5 further includes the following steps:

[0069] S51. Rotate the locknut 39 on the fixed clamp 35 counterclockwise to expose 2 - 3 threads of the locknut 39 from the end face of the opening and closing ring 38. Rotate the wing nut 42 on the fastening bolt 43 counterclockwise to open the two opening and closing rings 38 of the fixed clamp 35. Buckle the two fixed clamps 35 on both ends of the central rotating shaft 34 respectively, and slide the two fixed clamps 35 towards the middle of the central rotating shaft 34 respectively, so that the threaded end of the locknut 39 on the fixed clamp 35 closely adheres to the large - end face of the tapered coupling 36;

[0070] S52. Place the fastening bolt 43 on the fixed clamp 35 in the U - shaped groove of the lower - end connecting part 40 of the opening and closing ring 38. Rotate the wing nut 42 clockwise to make the two opening and closing rings tighten inward, fix the fixed clamp 35 on the central rotating shaft 34, and rotate the locknut 39 clockwise to tighten it, adding a lasting thrust to the tapered coupling 36. As shown in the figure, make the tapered surface of the tapered coupling 36 in close contact with the central hole of the frameless cable reel 51 to prevent the tapered coupling from shifting when the cable reel rotates; Figure 11 shown, rotate the wing nut 42 clockwise to make the two opening and closing rings tighten inward, fix the fixed clamp 35 on the central rotating shaft 34, and rotate the locknut 39 clockwise to tighten it, adding a lasting thrust to the tapered coupling 36. As shown in the figure, make the tapered surface of the tapered coupling 36 in close contact with the central hole of the frameless cable reel 51 to prevent the tapered coupling from shifting when the cable reel rotates;

[0071] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An unwinding device for a frameless cable reel, characterized in that, It includes two cable laying tools and a rotating shaft assembly. The two cable laying tools have the same structure. The cable laying tool includes a jacking assembly, a main frame and a moving assembly. The jacking assembly is arranged on the main frame to lift and lower the rotating shaft assembly. The moving assembly is arranged at the bottom of the main frame to move the main frame; The rotating shaft assembly includes a central rotating shaft, two tapered couplings and two fixed clamps. The central rotating shaft is used to pass through the central hole of the frameless cable reel. The two tapered couplings have the same structural dimensions. A through hole is provided at the position of the central axis of the tapered coupling. The inner diameter of the through hole matches the outer diameter of the rotating shaft. The minimum tapered surfaces of the two tapered couplings are arranged opposite to each other and sleeved on the central rotating shaft. The minimum diameter of the tapered surface of the tapered coupling is smaller than the inner diameter of the central hole of the smallest model of the frameless cable reel, and the maximum diameter of the tapered surface of the tapered coupling is larger than the inner diameter of the central hole of the largest model of the frameless cable reel. The two fixed clamps have the same structural dimensions. The two fixed clamps are sleeved at both ends of the central rotating shaft and are respectively located outside the maximum tapered surfaces of the two tapered couplings. The fixed clamps are used to fix the tapered couplings pushed into the central holes of the frameless cable reels; The jacking assembly includes a longitudinal adjustment assembly. The longitudinal adjustment assembly includes two bearings with adjustable spacing. Both ends of the central rotating shaft are placed between the two bearings in the longitudinal adjustment assembly.

2. The cable payout device of the frameless cable reel according to claim 1, characterized in that, The fixed clamp includes two semi-circular opening and closing rings, anti-loosening screws, connecting pieces, wing nuts, fastening bolts and second gaskets. Anti-loosening screws are provided at the centers of the planes of the opening and closing rings. The anti-loosening screws can rotate on the opening and closing rings. One ends of the two semi-circular opening and closing rings are connected as a whole by fixing pins, and the other ends are respectively provided with connecting pieces with U-shaped grooves. Threads are provided on the fastening bolts. A rotating shaft is arranged on one connecting piece in the direction parallel to the axis of the central rotating shaft. A circular hole two is provided at one end of the fastening bolt. The size of the circular hole two matches the outer diameter of the rotating shaft. The rotating shaft passes through the circular hole two to connect the fastening bolt and the connecting piece. Threads are provided in the U-shaped groove of the other connecting piece. The threads in the U-shaped groove match the threads on the fastening bolts. A wing nut is threadedly connected to the end of the fastening bolt away from the connecting piece. A second gasket is arranged between the wing nut and the connecting piece.

3. The cable payout device of the frameless cable reel according to claim 1, characterized in that, The longitudinal adjustment assembly further includes two dovetail chutes and a dovetail guide rail. The bearings are all installed on the bearing brackets. The two bearings are respectively fixed on the upper planes of the two dovetail chutes through the bearing brackets. Nuts are provided on the central axes of the inner grooves of the two dovetail chutes. The two dovetail chutes are installed on the dovetail guide rail. A long strip-shaped groove is provided in the middle of the dovetail guide rail. An adjusting screw rod is provided in the long strip-shaped groove. The two ends of the adjusting screw rod are provided with right and left hand threads. The adjusting screw rod is closely matched with the nuts in the inner grooves of the two dovetail chutes.

4. The cable pay-out device of the frameless cable reel according to claim 3, characterized in that, The jacking assembly further includes a jacking panel, a lifting guide rod, and a lifting component. The dovetail guide rail is fixedly installed on the jacking panel by an internal hexagonal screw. A lifting component is arranged on the lower surface of the jacking panel for lifting the jacking panel, and a lifting guide rod is arranged on the lower surface of the jacking panel. A guide tube is vertically penetrated at a position corresponding to the lifting guide rod at the top of the main frame, and a platform is arranged in the middle of the top of the main frame for placing the lifting component.

5. The cable pay-out device of the frameless cable reel according to claim 1, characterized in that, The moving assembly includes a plurality of liftable rollers, and a plurality of support feet with adjustable heights are arranged at the bottom of the main frame.

6. The cable paying-off device of the frameless cable reel according to claim 1, characterized in that, The main frame is in a right trapezoidal structure. The side where the inclined surface of the right trapezoid is located is defined as the second side, the side where the vertical surface opposite to the inclined surface is located is defined as the first side, and the two sides where the vertical surfaces connecting the inclined surface are located are respectively the front side and the rear side.

7. The cable payout device of the frameless cable reel according to claim 6, characterized in that Reinforcing crossbars are fixedly installed at the same horizontal positions on the front and rear sides of the main body frame. The moving assembly further includes a handwheel, a lead screw, a crossbar, a first vertical connecting rod, a lead screw support frame, a longitudinal support bar, a second vertical connecting rod, and a transverse connecting rod. A handle is provided on one side of the handwheel. An installation pipe is provided at the center position of the side of the handwheel opposite to the handle. Positioning holes are provided on the installation pipe. A lead screw installation plate is fixedly installed on the second side of the main body frame. An installation hole is provided at the center position of the lead screw installation plate. The first end of the lead screw is a convex structure without threads. The part of the convex structure close to the end is matched with the installation pipe. A threaded hole is provided on the part of the convex structure close to the end. The diameter of the part of the convex structure close to the end is larger than the inner diameter of the installation hole. The diameter of the part of the convex structure close to the threaded section is smaller than the inner diameter of the installation hole. The first end of the lead screw passes through the installation hole of the lead screw installation plate and is inserted into the installation pipe, and is tightly connected with the installation pipe. The threaded hole coincides with the positioning hole on the installation pipe and is connected by a fastening screw. A crossbar is provided on the threaded section of the lead screw. The crossbar is a cuboid with a screw hole at the center position. The screw hole of the crossbar is matched with the thread of the lead screw. The second end of the lead screw is connected to the lead screw support frame. The lead screw support frame is perpendicular to the central axis of the lead screw. The bottom of the lead screw support frame is welded to the longitudinal support bar. The longitudinal support bar is an angle iron with a length equal to the front and rear width of the main body frame. The bottom of the longitudinal support bar is welded to the reinforcing crossbars on the front and rear sides of the main body frame. Transverse connecting rods are provided below the reinforcing crossbars on the front and rear sides. The transverse connecting rods are rotatably connected to the reinforcing crossbars through the second vertical connecting rods. Two rollers are respectively installed at both ends of the transverse connecting rod. The rollers together with the base are welded below the transverse connecting rod. A long strip-shaped chute is provided on the upper side of the first vertical connecting rod. The end of the lower side of the first vertical connecting rod is fixedly connected to the transverse connecting rod. The first vertical connecting rod and the second vertical connecting rod are arranged in parallel. The middle part of the lower side of the first vertical connecting rod is rotatably connected to the reinforcing crossbar through a pin shaft. Rotating shafts are provided at both the front and rear ends of the crossbar. The rotating shafts at both the front and rear ends pass through the chute on the upper side of the first vertical connecting rod. Third threaded sections are provided on the parts of the rotating shafts exceeding the chute. The third threaded sections are connected to nuts. When the crossbar moves on the threaded section of the lead screw, the crossbar can drive the rotating shafts to slide up and down in the chute on the upper side of the first vertical connecting rod, driving the first vertical connecting rod to rotate around the pin shaft, thereby lifting and lowering the rollers. When the first vertical connecting rod is perpendicular to the horizontal plane, the first vertical connecting rod closely adheres to the side surface of the longitudinal support bar.

8. The cable payout device of the frameless cable reel according to claim 7, characterized in that The roller close to the first side is a directional roller, and the roller close to the second side is a universal roller. And the rollers are all thickened polyurethane wheels.

9. The cable pay-off device of the frameless cable reel according to claim 7, characterized in that, The handle is foldable, and the material of the handwheel is aluminum alloy.

10. A cable releasing method for a frameless cable reel cable, using the cable releasing device of the frameless cable reel as described in claim 1, characterized in that, Including the following steps: S1. Push the two cable laying tools to appropriate positions on both sides of the frameless cable reel to be laid through the moving assembly, and place the cable laying tools stably. S2. Adjust the distance between the two bearings at the top of the cable laying tool according to the diameter of the central rotating shaft. S3. Pass the central rotating shaft through the central hole of the frameless cable reel, make the small head ends of the two tapered couplings face the frameless cable reel, and respectively sleeve them from both ends of the central rotating shaft and push them into the central hole of the frameless cable reel. S4. Fine-tune the placement position of the cable laying tooling so that the central rotating shaft is placed between the two bearings at the top of the cable laying tooling; S5. Buckle the two fixing clamps on both ends of the central rotating shaft respectively, and slide the two fixing clamps towards the middle of the central rotating shaft until the fixing clamps are closely attached to the large-end face of the tapered coupling. Fix the fixing clamps on the central rotating shaft to make the tapered surface of the tapered coupling in close contact with the central hole of the frameless cable reel, preventing the tapered coupling from shifting when the cable reel rotates; S6. Operate the jacking components on both sides of the frameless cable reel to lift the frameless cable reel upward so that the frameless cable reel can be lifted off the ground and rotate freely; S7. Make horizontal adjustments. Operate the jacking components on both sides respectively for fine-tuning to make the central rotating shaft in a horizontal position; S8. The construction personnel drive the frameless cable reel to rotate by pulling the cable. Driven by the frameless cable reel, the central rotating shaft rotates between the bearings at the top of the cable laying tooling; S9. When the cable pulling and laying are completed, operate the jacking components to lower the cable reel to the ground plane, remove the central rotating shaft, roll the empty cable reel to the construction corner, and repeat S1 - S8 for the installation and pulling and laying construction of the next cable reel.

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