Heavy full hydraulic shaftless paper reel

Abstract

The utility model discloses a heavy full hydraulic no -shaft paper frame, including support frame, the inside of support frame is provided with four adjustable paper frame, and the upper end fixedly connected of support frame has the support, still includes paper pressing mechanism, paper pressing mechanism: it includes support, connecting shaft, adaptation frame and paper pressing mechanism, the middle part of support symmetry fixedly connected in the top wall of support, and the middle part of support all rotationally connected with connecting shaft, and the symmetry distribution adaptation frame is rotationally connected between two connecting shafts, and the front side surface of the adaptation frame of front side and the back side surface of the support of front side all are fixedly connected with the torsion spring between the back side surface of the adaptation frame of back side and the front side surface of the support of back side, this heavy full hydraulic no -shaft paper frame can change according to the diameter of paper roll in the release process, and the paper roll is adaptively extruded to paper roll by adaptation roller and paper pressing roller, and two paper rolls all have two stress extrusion points, and the release efficiency of paper roll is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper production technology, specifically a heavy-duty fully hydraulic shaftless paper frame. Background Technology

[0002] Corrugated paper is a packaging material with a unique structure and excellent performance. It is a sheet-like material made by bonding linerboard and corrugated paper formed by corrugating rollers. It is generally divided into two categories: single-wall corrugated paperboard and double-wall corrugated paperboard. In the production process of corrugated paper, heavy-duty fully hydraulic shaftless paper frame is used to support the roll of base paper and realize the release of the paper roll.

[0003] In the prior art, patent CN218453804U discloses a shaftless base paper holder for corrugated paper production, which includes two parallel extrusion parts fixedly connected to different movable frames. A spacing adjustment mechanism for adjusting the distance between the two movable frames is fixedly connected to the base. The extrusion mechanism is fixedly connected to the base. The extrusion mechanism includes a vertical plate, a mounting frame, a threaded rod, and a rotating roller. The vertical plate is fixedly connected to the base. The mounting frame is slidably inserted into the vertical plate. A second threaded hole is opened on the vertical plate. The threaded rod cooperates with the second threaded hole. One end of the threaded rod is rotatably connected to the mounting frame. The rotating roller is rotatably connected to the mounting frame.

[0004] There are some problems with this type of shaftless paper press used in corrugated paper production. The position adjustment of the squeeze rollers requires manual adjustment. During the winding and unwinding of the paper roll, the diameter of the paper roll changes rapidly. The process of adjusting the position of the squeeze rollers with a screw is cumbersome, which affects the degree of cooperation between the squeeze rollers and the paper roll. Ultimately, this makes the winding and unwinding of the paper roll unstable, affecting the production effect of corrugated paper. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a heavy-duty fully hydraulic shaftless paper roll holder that can adaptively squeeze the paper roll according to the diameter change of the paper roll during the release process. Moreover, each paper roll has two pressure squeezing points, which greatly improves the release efficiency of the paper roll and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heavy-duty fully hydraulic shaftless paper holder, including a support frame, four adjustable paper clamps are provided inside the support frame, a bracket is fixedly connected to the upper end of the support frame, and a paper pressing mechanism is also included.

[0007] Paper pressing mechanism: It includes a support, a connecting shaft, an adapting frame, and a paper pressing frame. The support is symmetrically fixedly connected to the middle of the top wall of the support. The middle of each support is rotatably connected to a connecting shaft. Adapting frames are symmetrically distributed and rotatably connected between two connecting shafts. Torsion springs are fixedly connected between the front surface of the front adapting frame and the rear surface of the front support, and between the rear surface of the rear adapting frame and the front surface of the rear support. The torsion springs are movably sleeved on the outer surface of adjacent connecting shafts. An adapting roller is rotatably connected to the end of the adapting frame away from the center of the support frame. The paper pressing frame is located at the lower end of the support frame. A paper pressing roller is rotatably connected to the end of the paper pressing frame away from the center of the support frame. The adapting roller and the paper pressing roller can adaptively squeeze the paper roll according to the diameter change of the paper roll during the release process. Both paper rolls have two pressure squeezing points, which greatly improves the release efficiency of the paper roll.

[0008] Furthermore, the paper pressing mechanism also includes guide rods, telescopic columns, and springs. The guide rods are symmetrically slidably connected inside the bracket. The lower ends of the two guide rods are fixedly connected to the upper end of the movable frame. Telescopic columns are fixedly connected to both the left and right ends of the movable frame. The telescopic ends of the telescopic columns are fixedly connected to the end of the laterally adjacent paper pressing frame near the center of the support frame. Springs are fixedly connected between the paper pressing frame and the movable frame. The springs are movably sleeved on the outer surface of the adjacent telescopic columns to achieve adaptive contact between the paper pressing roller and the paper roll.

[0009] Furthermore, the paper pressing mechanism also includes a fixed shaft and a connecting rod. The fixed shaft is fixedly connected to the front and rear ends of the movable frame, and a pin is fixedly connected to the middle of the inner wall of the front and rear sides of the adapting frame. A connecting rod is rotatably connected to the middle of the pin, and the lower end of the connecting rod is rotatably connected to the outer surface of the adjacent fixed shaft, so as to realize the linkage between the adapting frame and the paper pressing frame.

[0010] Furthermore, a controller is provided on the front side of the support frame. The input end of the controller is electrically connected to an external power source to control the operation of each hydraulic unit.

[0011] Furthermore, the support frame has a rotating cylinder rotatably connected to it via bearings. Symmetrically distributed slide rails are fixedly connected to both the front and rear ends of the outer surface of the rotating cylinder. The paper clamps are movably fitted onto the outer surfaces of the vertically adjacent rotating cylinders. The slide rails are slidably connected to the corresponding ends of the vertically adjacent paper clamps. A hydraulic cylinder is provided at the end of each of the two vertically adjacent paper clamps away from the center of the support frame. The oil holes of the hydraulic cylinders are connected to the oil ports of an external hydraulic pump through oil pipes. The input end of the external hydraulic pump is electrically connected to the output end of the controller to realize the adjustment of the spacing of the paper clamps and provide support for the rotation of the paper clamps.

[0012] Furthermore, each of the paper clamping frames is equipped with a hydraulic motor at the end furthest from the center of the support frame. The output shaft of each hydraulic motor is fixedly connected to a top paper clamp. The oil holes of each hydraulic motor are connected to the oil port of an external hydraulic pump through an oil pipe to realize the rotation of the paper roll being clamped.

[0013] Furthermore, a drive chamber is provided at the rear end of the support frame, and a guide column is fixedly connected inside the drive chamber. A drive frame is slidably connected to the outer surface of the guide column. A drive shaft is fixedly connected to the rear end of each rotating drum. Slide grooves are provided at both the left and right ends inside the drive frame. The outer surface of the drive shaft is slidably connected to the interior of the longitudinally adjacent slide groove. A second hydraulic cylinder is provided at the rear end of the upper surface of the support frame. The lower end of the piston rod of the second hydraulic cylinder is fixedly connected to the upper end of the drive frame. The piston rod of the second hydraulic cylinder extends into the interior of the drive chamber. The oil holes of the second hydraulic cylinder are connected to the oil ports of the external hydraulic pump through oil pipe three, providing driving force for the synchronous rotation of the four paper clamps.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This heavy-duty fully hydraulic shaftless paper holder has the following advantages:

[0015] Based on the diameter change of the paper roll during the release process, the paper roll generates a thrust on both the adapting roller and the pressure roller, and the torsion spring acts on the adapting frame, thereby enabling the adapting roller to squeeze the paper roll downward. At the same time, the spring acts on the pressure frame, causing the pressure roller to squeeze the paper roll laterally, so that each paper roll has two pressure points. Furthermore, the adapting roller and the pressure roller can be linked together through a linkage mechanism, effectively ensuring the stable release of the paper roll and greatly improving the release efficiency of the paper roll. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the rear side of the present invention;

[0019] Figure 4 This is a schematic diagram of the paper pressing mechanism of this utility model;

[0020] Figure 5 This is an enlarged structural diagram of point A in this utility model.

[0021] In the diagram: 1 Support frame, 2 Paper clamp, 3 Paper pressing mechanism, 31 Support, 32 Connecting shaft, 33 Adaptive frame, 34 Guide rod, 35 Telescopic column, 36 Spring, 37 Paper pressing frame, 38 Fixed shaft, 39 Connecting rod, 4 Rotary drum, 5 Slide rail, 6 Hydraulic cylinder one, 7 Bracket, 8 Top paper clamp, 9 Hydraulic motor, 10 Drive compartment, 11 Drive shaft, 12 Drive frame, 13 Hydraulic cylinder two, 14 Guide column, 15 Controller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This embodiment provides a technical solution: a heavy-duty fully hydraulic shaftless paper holder, including a support frame 1, four adjustable paper clamps 2 are provided inside the support frame 1, a bracket 7 is fixedly connected to the upper end of the support frame 1, a controller 15 is provided on the front side of the support frame 1, the input end of the controller 15 is electrically connected to an external power supply, and a paper pressing mechanism 3 is also included.

[0024] Paper pressing mechanism 3: It includes a support 31, a connecting shaft 32, an adapting frame 33, and a paper pressing frame 37. The support 31 is symmetrically fixedly connected to the middle of the top wall of the support 7. The middle of each support 31 is rotatably connected to the connecting shaft 32. The adapting frames 33 are symmetrically distributed and rotatably connected between the two connecting shafts 32. Torsion springs are fixedly connected between the front surface of the front adapting frame 33 and the rear surface of the front support 31, and between the rear surface of the rear adapting frame 33 and the front surface of the rear support 31. The torsion springs are movably sleeved on the outer surface of the adjacent connecting shafts 32. The end of the adapting frame 33 away from the center of the support frame 1 is rotatably connected to an adapting roller. The paper pressing frame 37 is located at the lower end of the support 7. The end of the paper pressing frame 37 away from the center of the support frame 1 is rotatably connected to a paper pressing roller. The paper pressing mechanism 3 also includes guide rods 34, telescopic columns 35, and springs 36. The guide rods 34 are symmetrically slidably connected to the inside of the support 7 (the support 7 has symmetrically distributed sliding openings, and the outer surfaces of the guide rods 34 are slidably connected to the vertically adjacent sliding openings). The lower ends of both guide rods 34 are fixedly connected to the upper end of the movable frame. Telescopic columns 35 are fixedly connected to both the left and right ends of the movable frame. The telescopic ends of the telescopic columns 35 are fixedly connected to the end of the laterally adjacent paper pressing frame 37 near the center of the support frame 1. Springs 36 are fixedly connected between the paper pressing frame 37 and the movable frame. The springs 36 are movably sleeved on the outer surfaces of adjacent telescopic columns 35. The paper pressing mechanism 3 also includes a fixed shaft 38 and a connecting rod 39. The fixed shaft 38 is fixedly connected to the front and rear ends of the movable frame, respectively. Pins are fixedly connected to the middle of the inner walls on both the front and rear sides of the adapting frame 33. A connecting rod 39 is rotatably connected to the middle of each pin. The lower end of each connecting rod 39 is rotatably connected to the outer surface of the adjacent fixed shaft 38. During the release of the paper roll, the upper end of the paper roll pushes the vertically adjacent adapting roller upwards, causing the corresponding adapting frame 33 to rotate upwards around the center of the connecting shaft 32. The rotation of the adapting frame 33 causes the corresponding torsion spring to torsion, and the spring force reacts to the corresponding adapting frame 33, allowing the adapting roller inside the adapting frame 33 to adaptively conform to the upper end of the paper roll when the paper roll diameter changes, squeezing the upper end of the paper roll. Simultaneously, the outer surface of the paper roll exerts a lateral thrust on the pressure roller. When the adapting frame 33 rotates upwards, the adapting frame 33 drives the connecting rod through the pins. The upper end of 39 moves upward, which in turn causes the lower end of the connecting rod 39 to pull the moving frame upward through the fixed shaft 38, thereby driving the two paper pressing frames 37 to move upward, and finally realizing the upward movement of the two paper pressing rollers. At the same time, the guide rods 34 slide inside the sliding opening inside the bracket 7 to ensure the stability of the moving frame, and thus ensure the stability of the moving paper pressing rollers. This causes the adjacent paper pressing frames 37 to move towards the center of the support frame 1, which in turn causes the telescopic ends of the adjacent telescopic columns 35 to retract. The paper pressing frames 37 move closer to the moving frame, causing the spring 36 to compress elastically. The elastic force of the spring 36 reacts to the adjacent paper pressing frames 37, which causes the paper pressing rollers to fit with the corresponding paper rolls, providing lateral squeezing force to the paper rolls. At the same time, the paper rolls have two squeezing points, ensuring the stability of the paper roll release.

[0025] The support frame 1 has a rotating cylinder 4 rotatably connected to its interior via bearings. Symmetrically distributed slide rails 5 are fixedly connected to both ends of the outer surface of the rotating cylinder 4. Paper clamps 2 are movably fitted onto the outer surfaces of vertically adjacent rotating cylinders 4. The slide rails 5 are slidably connected to the corresponding ends of vertically adjacent paper clamps 2. A hydraulic cylinder 6 is installed at the end of each longitudinally adjacent paper clamp 2 furthest from the center of the support frame 1. The oil holes of the hydraulic cylinders 6 are connected to the oil ports of an external hydraulic pump via oil pipes. The input end of the external hydraulic pump is electrically connected to the output end of a controller 15. A hydraulic motor 9 is installed at the end of each paper clamp 2 furthest from the center of the support frame 1. A paper clamp 8 is fixedly connected to the output shaft of each hydraulic motor 9. The oil holes of the hydraulic motor 9 are connected to... The second oil pipe is connected to the oil port of the external hydraulic pump. A drive chamber 10 is located at the rear end of the support frame 1. A guide column 14 is fixedly connected inside the drive chamber 10. A drive frame 12 is slidably connected to the outer surface of the guide column 14. Drive shafts 11 are fixedly connected to the rear ends of the rotating drum 4. Slide grooves are provided at both the left and right ends inside the drive frame 12. The outer surface of the drive shaft 11 is slidably connected to the interior of the longitudinally adjacent slide grooves. A second hydraulic cylinder 13 is located at the rear end of the upper surface of the support frame 1. The lower end of the piston rod of the second hydraulic cylinder 13 is fixedly connected to the upper end of the drive frame 12. The piston rod of the second hydraulic cylinder 13 extends into the interior of the drive chamber 10. The oil ports of the second hydraulic cylinder 13 are connected to the oil ports of the external hydraulic pump via the third oil pipe. The system is connected via external transport equipment. The paper roll is transported to a designated area. Then, the controller 15 activates the external hydraulic pump. The external hydraulic pump pumps oil into the three-way hydraulic cylinder 13 through the oil pipe, causing the piston rod of the two-way hydraulic cylinder 13 to extend. The extension of the piston rod of the two-way hydraulic cylinder 13 pushes the drive frame 12 downward. Under the guidance of the guide column 14, the drive frame 12 moves downward, causing the two drive shafts 11 to move downward, thereby causing the rotating drums 4 to rotate away from the center of the support frame 1. The rotation of the rotating drums 4 drives the slide rail 5 to rotate, thereby causing the paper clamps 2 to rotate away from the center of the support frame 1, and thus causing the top paper clamps 8 to rotate around the central axis of the vertically adjacent rotating drums 4 away from the center of the support frame 1. When the top paper clamps 8 reach the designated area... When in position, the external hydraulic pump stops injecting oil into the three-way hydraulic cylinder 2 13 through the oil pipe, and instead injects oil into the hydraulic cylinder 6 through the oil pipe 1. The piston rod of the hydraulic cylinder 6 retracts, pulling the corresponding paper clamp 2 towards the center of the support frame 1. At the same time, the slide rail 5 provides guidance for the corresponding paper clamp 2, thereby realizing the longitudinal spacing adjustment of the two longitudinally adjacent top paper clamps 8. The two longitudinally adjacent top paper clamps 8 achieve stable clamping of the paper roll. After the clamping is stable, the external hydraulic pump stops injecting oil into the hydraulic cylinder 6 through the oil pipe 1, and instead injects oil into the hydraulic motor 9 through the oil pipe 2. The output shaft of the hydraulic motor 9 rotates, driving the adjacent top paper clamps 8 to rotate. The rotation of the two longitudinally adjacent top paper clamps 8 realizes the release of the paper roll.

[0026] The working principle of the heavy-duty fully hydraulic shaftless paper holder provided by this utility model is as follows: During operation, the personnel first place the support frame 1, the paper clamping frame 2, and other mechanisms stably in the horizontal working area. Then, the personnel transport the paper roll to the designated area using external transport equipment. Subsequently, the controller 15 activates the external hydraulic pump, which pumps oil into the three-way hydraulic cylinder 13 through the oil pipe, causing the piston rod of the hydraulic cylinder 13 to extend. The extension of the piston rod of the hydraulic cylinder 13 pushes the drive frame 12 downward. Under the guidance of the guide column 14, the drive frame 12 moves downward, causing the two drive shafts 11 to move downward, thereby causing the rotating drum 4 to rotate away from the center of the support frame 1. The rotation of the rotating drum 4 drives the slide rail 5 to rotate, thereby causing the paper clamping frame to rotate. Both the top paper clamps 8 and the bottom paper clamps 8 rotate away from the center of the support frame 1, causing the top paper clamps 8 to rotate around the central axis of the vertically adjacent rotating cylinders 4 away from the center of the support frame 1. When the top paper clamps 8 reach the designated position, the external hydraulic pump stops injecting oil through the three-way hydraulic cylinder 2 13 and injects oil into the hydraulic cylinder 6 through the first oil pipe. The piston rod of the hydraulic cylinder 6 retracts, pulling the corresponding paper clamp 2 towards the center of the support frame 1. At the same time, the slide rails 5 provide guidance for the corresponding paper clamps 2, thereby realizing the adjustment of the longitudinal spacing between the two longitudinally adjacent top paper clamps 8. The two longitudinally adjacent top paper clamps 8 achieve stable clamping of the paper roll. After the clamping is stable, the external hydraulic pump stops injecting oil into the hydraulic cylinder 6 through the first oil pipe and injects oil into the hydraulic cylinder 6 through the first oil pipe. The two-way hydraulic motor 9 is filled with oil. The output shaft of the hydraulic motor 9 rotates, driving the adjacent top paper clamps 8 to rotate. The rotation of the two longitudinally adjacent top paper clamps 8 releases the paper roll. During the release of the paper roll, the upper end of the paper roll pushes the vertically adjacent adapting rollers upward, thereby causing the corresponding adapting frame 33 to rotate upward around the center of the connecting shaft 32. The rotation of the adapting frame 33 causes the corresponding torsion spring to torsion force. The elastic force of the torsion spring reacts to the corresponding adapting frame 33, so that the adapting roller inside the adapting frame 33 can adaptively fit the upper end of the paper roll when the paper roll diameter changes, squeezing the upper end of the paper roll. At the same time, the outer surface of the paper roll generates a lateral thrust on the pressure roller. When the adapting frame 33 rotates upward, the adapting frame 33 drives the connecting rod 39 upward through the pin. The upward movement of the connecting rod 39 causes the lower end of the connecting rod 39 to pull the moving frame upward through the fixed shaft 38, which in turn drives the two paper pressing frames 37 to move upward, ultimately achieving the upward movement of the two paper pressing rollers. At the same time, the guide rods 34 slide inside the sliding opening inside the bracket 7 to ensure the stability of the moving frame, thereby ensuring the stability of the paper pressing roller movement. This causes the adjacent paper pressing frames 37 to move towards the center of the support frame 1, thereby causing the telescopic ends of the adjacent telescopic columns 35 to retract. The paper pressing frames 37 move closer to the moving frame, causing the spring 36 to compress elastically. The elastic force of the spring 36 reacts to the adjacent paper pressing frames 37, thereby causing the paper pressing roller to fit against the corresponding paper roll, providing lateral squeezing force to the paper roll, and ensuring that each paper roll has two squeezing points, thus ensuring the stability of the paper roll release.

[0027] It is worth noting that the controller 15 disclosed in the above embodiments controls the operation of the external air pump using methods commonly used in the prior art.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A heavy full hydraulic shaftless paper frame, comprising a support frame (1), the inside of the support frame (1) is provided with four adjustable paper clamps (2), and the upper end of the support frame (1) is fixedly connected with a support (7), characterized in that: It also includes a paper pressing mechanism (3); Paper pressing mechanism (3): It includes a support (31), a connecting shaft (32), an adaptor frame (33) and a paper pressing frame (37). The support (31) is symmetrically fixedly connected to the middle of the top wall of the support (7). The middle of the support (31) is rotatably connected to the connecting shaft (32). The two connecting shafts (32) are rotatably connected to the symmetrically distributed adaptor frames (33). The front surface of the adaptor frame (33) and the rear surface of the support (31) are fixedly connected to the rear surface of the adaptor frame (33) and the front surface of the support (31). The torsion springs are movably sleeved on the outer surface of the adjacent connecting shafts (32). The end of the adaptor frame (33) away from the center of the support frame (1) is rotatably connected to an adaptor roller. The paper pressing frame (37) is set at the lower end of the support (7). The end of the paper pressing frame (37) away from the center of the support frame (1) is rotatably connected to a paper pressing roller.

2. A heavy duty full hydraulic shaftless reel according to claim 1, characterized in that: The paper pressing mechanism (3) also includes guide rods (34), telescopic columns (35) and springs (36). The guide rods (34) are symmetrically slidably connected to the inside of the bracket (7). The lower ends of the two guide rods (34) are fixedly connected to the upper end of the movable frame. The left and right ends of the movable frame are fixedly connected to telescopic columns (35). The telescopic ends of the telescopic columns (35) are fixedly connected to the end of the horizontally adjacent paper pressing frame (37) near the center of the support frame (1). The paper pressing frame (37) and the movable frame are fixedly connected to springs (36). The springs (36) are movably sleeved on the outer surface of the adjacent telescopic columns (35).

3. A heavy duty full hydraulic shaftless reel according to claim 2, characterized in that: The paper pressing mechanism (3) also includes a fixed shaft (38) and a connecting rod (39). The fixed shaft (38) is fixedly connected to the front and rear ends of the movable frame. The middle of the inner walls of the front and rear sides of the adapting frame (33) is fixedly connected to a pin. The middle of the pin is rotatably connected to a connecting rod (39). The lower end of the connecting rod (39) is rotatably connected to the outer surface of the adjacent fixed shaft (38).

4. A heavy duty full hydraulic shaftless reel according to claim 1 wherein: A controller (15) is provided on the front side of the support frame (1), and the input end of the controller (15) is electrically connected to an external power source.

5. A heavy duty full hydraulic shaftless reel according to claim 4 wherein: The support frame (1) is rotatably connected to a rotating cylinder (4) via a bearing. The front and rear ends of the outer surface of the rotating cylinder (4) are fixedly connected to symmetrically distributed slide rails (5). The paper clamps (2) are movably sleeved on the outer surface of the vertically adjacent rotating cylinders (4). The interior of the slide rails (5) is slidably connected to the corresponding ends of the vertically adjacent paper clamps (2). A hydraulic cylinder (6) is provided at the end of the two vertically adjacent paper clamps (2) away from the center of the support frame (1). The oil holes of the hydraulic cylinder (6) are connected to the oil port of the external hydraulic pump through an oil pipe. The input end of the external hydraulic pump is electrically connected to the output end of the controller (15).

6. A heavy duty full hydraulic shaftless reel according to claim 4 wherein: The paper clamp (2) is equipped with a hydraulic motor (9) at one end away from the center of the support frame (1). The output shaft of the hydraulic motor (9) is fixedly connected to the top paper clamp (8). The oil hole of the hydraulic motor (9) is connected to the oil port of the external hydraulic pump through the oil pipe.

7. A heavy duty full hydraulic shaftless reel according to claim 5 wherein: The rear end of the support frame (1) is provided with a drive chamber (10), and the inside of the drive chamber (10) is fixedly connected with a guide column (14). The outer surface of the guide column (14) is slidably connected with a drive frame (12). The rear end of the rotating drum (4) is fixedly connected with a drive shaft (11). The left and right ends of the drive frame (12) are provided with sliding grooves. The outer surface of the drive shaft (11) is slidably connected with the interior of the longitudinally adjacent sliding groove. The rear end of the upper surface of the support frame (1) is provided with a hydraulic cylinder two (13). The lower end of the piston rod of the hydraulic cylinder two (13) is fixedly connected with the upper end of the drive frame (12). The piston rod of the hydraulic cylinder two (13) extends into the interior of the drive chamber (10). The oil holes of the hydraulic cylinder two (13) are all connected to the oil port of the external hydraulic pump through the oil pipe three.

Images