Pulley device

Abstract

The utility model provides a pulley device, which is applied to a ship body and comprises a guide pulley and a support, the support is fixed on the ship body, and the guide pulley is rotatably arranged on the support. A pulley groove used for containing a cable is formed in the circumferential direction of the guide pulley, and when the cable moves, the cable makes friction contact with the pulley groove to generate component force acting on the guide pulley, so that the guide pulley rotates around the axis of the guide pulley. And the positions of the guide pulleys comprise a working position for guiding the cable and a non-working position for avoiding other equipment. The pulley device further comprises a position switching structure, the position switching structure is connected with the guide pulley and the support, and the position switching structure provides a driving effect for the guide pulley so that the guide pulley can be switched between a working position used for guiding the cable and a non-working position used for avoiding other equipment. The pulley device can save the space of the ship body.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a pulley device. Background Art

[0002] The winch system is a system used on ships and offshore platforms to achieve operations such as anchoring, mooring and towing. It specifically includes a winch, a pulley device and a cable. The cable or wire rope is wound or released by controlling the rotation of the winch capstan. The pulley device is fixed at an appropriate position on the hull to change the direction of the cable.

[0003] However, due to the limited space of the ship, the layout of various equipment will affect each other. After the conventional pulley device is arranged on the hull, its position is fixed and the space occupied cannot be moved. Under special working conditions, the immovable pulley will affect the layout of other equipment and limit the flexibility and maneuverability of the layout of other equipment on the hull. Utility Model Content

[0004] The utility model aims to provide a pulley device, which can meet the special requirements of hull layout and effectively save hull layout space by switching the guide pulley from the working position to the non-working position.

[0005] The utility model provides a pulley device, which is applied to a hull. The pulley device comprises a guide pulley and a support, wherein the support is fixed to the hull, and the guide pulley is rotatably arranged on the support; the guide pulley has a pulley groove for accommodating a cable in its circumference, and when the cable moves, the cable is in frictional contact with the pulley groove to generate a component force acting on the guide pulley, thereby causing the guide pulley to rotate around its axis; the position of the guide pulley comprises a working position for guiding the cable and a non-working position for avoiding other equipment; the pulley device also comprises a position switching structure, which connects the guide pulley and the support, and provides a driving action for the guide pulley, so that the guide pulley switches between the working position for guiding the cable and the non-working position for avoiding other equipment.

[0006] In one embodiment, the position switching device includes a rotating member, which has a first end and a second end relative to each other; wherein the first end of the rotating member is connected to the guide pulley; the second end of the rotating member is rotatably connected to the support; the rotating member is configured to be rotatable in a plane that is perpendicular to the rotation plane of the guide pulley, so as to drive the guide pulley to rotate, thereby switching the guide pulley between the working position and the non-working position.

[0007] In one embodiment, the position switching device also includes a connecting member, the first end of the rotating member is provided with a first connecting hole, the support is provided with a second connecting hole, and the connecting member can pass through the first connecting hole and the second connecting hole, so that the connecting member can rotate with the axis of the connecting member as the rotating axis.

[0008] In one embodiment, the position switching structure further includes a driving member connected to the rotating member, and the driving member is used to drive the rotating member to rotate.

[0009] In one embodiment, the driving member is a hydraulic cylinder, which includes a cylinder and a piston rod that can be extended and retracted relative to the cylinder, the cylinder and the support are rotatably connected, and the free end of the piston rod is rotatably connected to the rotating member to drive the rotating member to rotate; when the piston rod is extended, the guide pulley rotates from the working position to the non-working position; when the piston rod is shortened, the guide pulley rotates from the non-working position to the working position.

[0010] In one embodiment, the pulley device further comprises an encoder fixedly disposed on the guide pulley, and the encoder is used to monitor the speed of the cable in the pulley groove of the guide pulley.

[0011] In one embodiment, the pulley device further comprises a force measuring structure arranged on the rotating member, and the force measuring structure is used to measure the force condition of the cable in the pulley groove of the guide pulley.

[0012] In one embodiment, the pulley device further includes an inductive limiting structure, which is used to monitor the current position of the guide pulley and control the driving member to stop working when the guide pulley is located in the working position or the non-working position.

[0013] In one embodiment, the pulley device further comprises a mechanical limiting structure disposed on the support, and the mechanical limiting structure is used to limit the rotation range of the rotating member.

[0014] In one embodiment, the mechanical limiting structure is a limiting pin, the rotating member is provided with a first limiting hole for the limiting pin to be inserted, and the support is provided with a second limiting hole for the limiting pin to be inserted; when the guide pulley is located in the working position or the non-working position, the limiting pin is used to pass through the first limiting hole and the second limiting hole, thereby fixing the rotating member.

[0015] The guide pulley of the pulley device provided by the utility model has a working position and a non-working position. Under special working conditions of the hull, such as when other equipment needs to be arranged at the working position of the guide pulley, the guide pulley can be switched from the working position to the non-working position through the position switching structure, thereby freeing up space for other equipment to achieve the purpose of avoiding other equipment, effectively saving the hull layout space, and making the hull space layout more compact; the position of the guide pulley can be adjusted according to actual requirements on site, and the rotation angle of the guide pulley can be flexibly set, thereby improving the flexibility and operating efficiency of the equipment on the ship, while reducing the complexity of maintenance and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0017] Figure 1 This is a schematic diagram of the pulley device before improvement;

[0018] Figure 2 yes Figure 1 The cross-sectional view of line AA in the figure;

[0019] Figure 3 is a schematic diagram of an embodiment of a pulley device according to the utility model;

[0020] Figure 4 yes Figure 3 A side view of the pulley assembly shown;

[0021] Figure 5 yes Figure 3 A schematic diagram of the guide pulley of the pulley device shown is in the working position;

[0022] Figure 6 yes Figure 3 A schematic diagram of a pulley device shown with the guide pulley in a non-operating position;

[0023] Figure 7 yes Figure 3 A cross-sectional view of the pulley arrangement shown. DETAILED DESCRIPTION

[0024] The following embodiments are Figure 1 and Figure 2 An improvement is made on the basis of the pulley device shown. Figure 1 and Figure 2As shown, the pulley device includes a guide pulley 1 and a support 2. The support 2 can be fixed to the hull (not shown), and the guide pulley 1 is rotatably connected to the support through a pulley shaft. The guide pulley 1 has a pulley groove 1a for accommodating a cable on its circumference. When the cable 11 moves, the cable 11 is in frictional contact with the pulley groove 1a to generate a component force acting on the guide pulley 1, thereby causing the guide pulley 1 to rotate around its axis. The pulley device is fixed, and the position of the guide pulley 1 cannot be moved. Under special working conditions, the immovable guide pulley 1 will affect the arrangement of other equipment, limit the flexibility and maneuverability of the arrangement of other equipment on the hull, and fail to effectively utilize the limited space of the hull.

[0025] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each example is provided to explain the present invention, rather than to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0026] As used herein, the term "axial" is the central axis of a component or a direction parallel to the central axis of the component. The terms "first" and "second" may be used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of each component.

[0027] exist Figure 1 and Figure 2 On the basis of the pulley device shown, the pulley device improved according to the embodiments described later can meet the special requirements of hull layout and effectively save hull layout space.

[0028] Figure 3 and Figure 4 An embodiment of a pulley device 10 provided by the utility model is shown. Figure 5 and Figure 6 The working position 101 and the non-working position 102 of the pulley device 10 are shown respectively. The pulley device 10 can be applied to a ship hull, and includes a guide pulley 100 and a support 200. The support 200 is fixed to the ship hull, and the guide pulley 100 is rotatably arranged on the support 200. The guide pulley 100 has a pulley groove 110 for accommodating the cable 11 in its circumference. When the cable 11 moves, the cable 11 and the pulley groove 110 are in frictional contact to generate a component force acting on the guide pulley 100, thereby causing the guide pulley 100 to rotate around its axis. Figure 5 and 6As shown, the position of the guide pulley 100 includes a working position 101 for guiding the cable 11 and a non-working position 102 for avoiding other equipment 20. The pulley device 10 also includes a position switching structure 300, the position switching structure 300 connects the guide pulley 100 and the support 200, and the position switching structure 300 provides a driving action for the guide pulley 100, so that the guide pulley 100 switches between the working position 101 for guiding the cable 11 and the non-working position 102 for avoiding other equipment.

[0029] The guide pulley 100 of the pulley device 10 provided by the utility model has a working position 101 and a non-working position 102. Under special working conditions of the hull, such as when other equipment needs to be arranged at the working position 101 of the guide pulley 100, the guide pulley 100 can be switched from the working position 101 to the non-working position 102 through the position switching structure 300, so as to make room for other equipment to achieve the purpose of avoiding other equipment, effectively save the hull layout space, and make the hull space layout more compact; and the position of the guide pulley 100 can be adjusted according to actual requirements on site, and the rotation angle of the guide pulley 100 can be flexibly set, so as to improve the flexibility and operating efficiency of the equipment on the ship, while reducing the complexity of maintenance and operation.

[0030] The pulley device 10 provided by the utility model can be installed on the hull according to actual needs, such as the deck of the hull; and can be installed according to Figure 3 and Figure 4 The guide pulley 100 is installed in the direction shown, that is, the center line of the guide pulley 100 and the rotation plane where the center line is located are perpendicular to the horizontal plane, and the direction of the cable 11 (or wire rope) is vertical. Figure 4 As shown, therefore, the guide pulley 100 in the pulley device 10 provided by the utility model is a vertical guide pulley 100. The connection method of the support 200 and the hull can be selected as welding, and the connection strength and connection stability are better.

[0031] refer to Figure 5 and Figure 6 In one embodiment, the position switching device includes a rotating member 310, and the rotating member 310 has a first end 311 and a second end 312 opposite to each other. The first end 311 of the rotating member 310 is connected to the guide pulley 100; the second end 312 of the rotating member 310 is rotatably connected to the support 200. Further, the support 200 has a fixing portion 210, such as Figure 3 , Figure 5 and Figure 6 As shown, the fixing portion 210 is located at Figure 3The support 200 and the upper end of the rotating member 310 are arranged to rotate in a plane perpendicular to the rotating plane of the guide pulley 100, so as to drive the guide pulley 100 to rotate, thereby switching the guide pulley 100 between the working position 101 and the non-working position 102. Figure 5 and Figure 6 As shown, the rotating member 310 can rotate on a horizontal plane. Optionally, the rotating member 310 is connected to the guide pulley 100 via a bearing.

[0032] Figure 7 1 shows a cross-sectional view of the pulley device 10. Figure 7 As shown, in one embodiment, the position switching device further includes a connecting member 320, a first end 311 of the rotating member 310 is provided with a first connecting hole (not shown), and the support 200 is provided with a second connecting hole (not shown), and the connecting member 320 can pass through the first connecting hole and the second connecting hole, so that the connecting member 320 can rotate with the axis of the connecting member 320 as the rotating axis. The connecting member 320 can be a pin, and the rotating member 310 and the fixing portion 210 of the support 200 are connected by the pin. The pin, the first connecting hole and the second connecting hole are arranged coaxially, as shown in FIG. Figure 7 shown.

[0033] In one embodiment, the position switching structure 300 further includes a driving member 330 connected to the rotating member 310, and the driving member 330 is used to drive the rotating member 310 to rotate, thereby realizing automatic control of the guide pulley 100, which can be remotely and locally controlled, and is easy to operate and maintain. In another embodiment, the rotating member 310 is rotated manually to change the position of the guide pulley 100.

[0034] In one embodiment, the driving member 330 is a hydraulic cylinder (hereinafter, reference numeral 330 indicates a hydraulic cylinder), and the hydraulic cylinder 330 includes a cylinder 331 and a piston rod 332 that can be extended relative to the cylinder 331. The cylinder 331 is rotatably connected to the support 200. Figure 3 and Figure 4 As shown, the front end 331a of the cylinder 331 is rotatably connected to the fixing portion 210 of the support 200. Figure 5 and Figure 6 As shown, the free end 332a of the piston rod 332 is rotatably connected to the rotating member 310 to drive the rotating member 310 to rotate. When the piston rod 332 is extended, the guide pulley 100 rotates from the working position 101 to the non-working position 102. When the piston rod 332 is shortened, the guide pulley 100 rotates from the non-working position 102 to the working position 101.

[0035] When the hull is in special working conditions, other equipment 20 (such as Figure 6When the pipeline shown in FIG. 1 needs to pass through the working position 101 of the guide pulley 100, the rotating member 310 rotates and the guide pulley 100 rotates to the non-working position 102 to make room for the pipeline. Figure 5 and Figure 6 , the piston rod 332 extends, and the rotating member 310 rotates counterclockwise around the axis of the connecting member 320, which can be automatically Figure 5 The working position 101 shown is rotated to Figure 6 The non-working position 102 shown; accordingly, the piston rod 332 is shortened, and the rotating member 310 rotates clockwise around the axis of the connecting member 320, which can be automatically Figure 6 The non-operating position 102 shown is rotated to Figure 5 Of course, the switching between the working position 101 and the non-working position 102 of the guide pulley 100 is not limited to the above-mentioned rotation mode. The rotating member 310 can rotate clockwise around the axis of the connecting member 320, so that the guide pulley 100 rotates from the working position 101 to the non-working position 102. Correspondingly, the rotating member 310 can also rotate counterclockwise around the axis of the connecting member 320, so that the guide pulley 100 rotates from the non-working position 102 to the working position 101, which can be determined according to the actual needs of the hull working conditions.

[0036] The angular range between the working position 101 and the non-working position 102 of the guide pulley 100 is the rotation range of the guide pulley 100. In one embodiment, the rotation range is an obtuse angle, such as Figure 5 and Figure 6 Of course, the rotation range can also be other angle ranges, which are determined according to actual working conditions. The guide pulley 100 can also be located at any position between the working position 101 and the non-working position 102, that is, at any position within the rotation range.

[0037] like Figure 7 As shown, in one embodiment, the pulley device 10 further includes an encoder 400 fixedly disposed on the guide pulley 100. The encoder 400 is used to monitor the speed of the cable 11 in the pulley groove 110 of the guide pulley 100, so that the speed of the cable 11 can be accurately monitored in real time to prevent accidents. The encoder 400 can be used in conjunction with a winch (not shown), that is, to achieve redundant control together with the winch drum encoder.

[0038] In one embodiment, the pulley device 10 further includes a force measuring structure 500 disposed on the rotating member 310. The force measuring structure 500 is used to measure the force of the cable 11 in the pulley groove 110 of the guide pulley 100 to prevent accidents. The force measuring structure 500 can be a ball head pressure type force measuring device with high measurement accuracy and fast response speed.

[0039] In one embodiment, the pulley device 10 further includes an inductive limit structure (not shown), which is used to monitor the current position of the guide pulley 100 and control the driving member 330 to stop working when the guide pulley 100 is in the working position 101 or the non-working position 102. The inductive limit structure can be a limit switch, a limit sensor or other devices that can realize the limit detection and control functions. In this embodiment, the inductive limit structure is a dual-signal dual-inductive limit device, which has high safety and reliability.

[0040] In one embodiment, the pulley device 10 further includes a mechanical limiting structure 600 disposed on the support 200, and the mechanical limiting structure 600 is used to limit the rotation range of the rotating member 310. When the guide pulley 100 rotates to the working position 101 or the non-working position 102, the inductive limiting structure can detect that the guide pulley 100 has reached the target position and control the hydraulic cylinder to stop working. At this time, the position of the guide pulley 100 is locked by the mechanical limiting structure 600. The dual limiting of the inductive limiting structure and the mechanical limiting structure 600 can prevent accidents such as oil cylinder leakage and hull shaking, and switch and lock the position of the guide pulley 100 more safely and reliably.

[0041] like Figure 5 and Figure 7 As shown, in one embodiment, the mechanical limiting structure 600 is a limiting pin (hereinafter, the reference numeral 600 represents the limiting pin), the rotating member 310 is provided with a first limiting hole (not shown) for the limiting pin 600 to be inserted, and the support 200 is provided with a second limiting hole (not shown) for the limiting pin 600 to be inserted. When the guide pulley 100 is located at the working position 101 or the non-working position 102, the limiting pin 600 is used to pass through the first limiting hole and the second limiting hole, thereby fixing the rotating member 310. The limiting pin 600 is manually operated, has high flexibility, and has a simple structure.

[0042] In another embodiment, the mechanical limiting structure is a limiting block (not shown) disposed on the support 200, which is located at the working position 101 and the non-working position 102 respectively.

[0043] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model shall fall within the protection scope defined by the claims of the utility model.

Claims

1. A pulley device, applied to a ship, the pulley device comprising a guide pulley and a support, the support being fixed to the ship, and the guide pulley being rotatably arranged on the support; The guide pulley has a pulley groove for accommodating a cable on its circumference. When the cable moves, the cable is in frictional contact with the pulley groove to generate a component force acting on the guide pulley, thereby causing the guide pulley to rotate around its axis. It is characterized in that The position of the guide pulley includes a working position for guiding the cable and a non-working position for avoiding other equipment; The pulley device also includes a position switching structure, which connects the guide pulley and the support. The position switching structure provides a driving action for the guide pulley so that the guide pulley switches between a working position for guiding the cable and a non-working position for avoiding other equipment.

2. The pulley device according to claim 1, characterized in that: The position switching structure includes a rotating member having a first end and a second end opposite to each other; wherein, The first end of the rotating member is connected to the guide pulley; The second end of the rotating member is rotatably connected to the support; The rotating member is configured to rotate in a plane perpendicular to the rotating plane of the guide pulley to drive the guide pulley to rotate, thereby switching the guide pulley between the working position and the non-working position.

3. The pulley device according to claim 2, characterized in that: The position switching structure also includes a connecting member, the first end of the rotating member is provided with a first connecting hole, the support is provided with a second connecting hole, the connecting member can pass through the first connecting hole and the second connecting hole, so that the connecting member can rotate with the axis of the connecting member as the rotating axis.

4. The pulley device according to claim 2, characterized in that: The position switching structure further includes a driving member connected to the rotating member, and the driving member is used to drive the rotating member to rotate.

5. The pulley device according to claim 4, characterized in that: The driving member is a hydraulic cylinder, which includes a cylinder and a piston rod that can be extended and retracted relative to the cylinder, the cylinder is rotatably connected to the support, and the free end of the piston rod is rotatably connected to the rotating member to drive the rotating member to rotate; When the piston rod is extended, the guide pulley rotates from the working position to the non-working position; When the piston rod is shortened, the guide pulley rotates from the non-working position to the working position.

6. The pulley device according to any one of claims 1 to 5, characterized in that: The pulley device further comprises an encoder fixedly arranged on the guide pulley, and the encoder is used for monitoring the speed of the cable in the pulley groove of the guide pulley.

7. The pulley device according to any one of claims 2 to 5, characterized in that The pulley device also includes a force measuring structure arranged on the rotating member, and the force measuring structure is used to measure the force condition of the cable in the pulley groove of the guide pulley.

8. The pulley device according to claim 4 or 5, characterized in that: The pulley device further comprises an inductive limiting structure, which is used to monitor the current position of the guide pulley and control the driving member to stop working when the guide pulley is located at the working position or the non-working position.

9. The pulley device according to claim 8, characterized in that The pulley device further comprises a mechanical limiting structure arranged on the support, and the mechanical limiting structure is used to limit the rotation range of the rotating member.

10. The pulley device according to claim 9, characterized in that The mechanical limiting structure is a limiting pin, the rotating member is provided with a first limiting hole for the limiting pin to be inserted, and the support is provided with a second limiting hole for the limiting pin to be inserted; When the guide pulley is located at the working position or the non-working position, the limiting pin is used to pass through the first limiting hole and the second limiting hole, thereby fixing the rotating member.

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