Piston rod protective sleeve for variable-pitch oil cylinder of fan

Abstract

The utility model discloses a fan variable-pitch oil cylinder piston rod protective sleeve which comprises a main body assembly, and the main body assembly comprises a protective sleeve body, a zipper and a hoop. Wherein the zipper is sewn in one end of the protective sleeve body, the two sets of hoops are arranged, the hoops are fixed to the left side and the right side of the outer surface of the protective sleeve body, the zipper is located in the hoops, and the protective sleeve further comprises a guide assembly; the guide assembly comprises a fixed frame, a movable plate and a limiting plate. When a unit is in factory design, a variable-pitch oil cylinder piston rod is not provided with a protective sleeve; along with accumulation of operation time of a unit, falling of components in a hub of a variable-pitch oil cylinder piston rod, treading of maintainers in the fixed maintenance process and the like, abrasion and surface scratches of the variable-pitch oil cylinder piston rod are aggravated, and the service life is shortened; derived defects such as oil leakage of a unit and low pressure of a hydraulic system are increased, exposed safety problems are increasingly prominent, and large potential safety hazards exist.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder piston rods, in particular to a protective sleeve for the piston rod of a wind turbine pitch oil cylinder. Background Art

[0002] The wind turbine pitch cylinder piston rod is an important component in the wind turbine pitch system. Its purpose is to adjust the angle of the wind turbine blades to adapt to different wind speeds and ensure the efficiency and safety of wind power generation.

[0003] However, it still has the following disadvantages in actual use:

[0004] When the unit was designed at the factory, the piston rod of the pitch cylinder was not installed with a protective cover; as the unit's running time accumulated, the piston rod of the pitch cylinder was damaged by the falling of components inside the hub, or the stepping on by maintenance personnel during maintenance, etc., resulting in increased wear and surface scratches on the piston rod of the pitch cylinder, reducing its service life; resulting in an increase in derivative defects such as oil leakage and low pressure in the hydraulic system, exposing increasingly prominent safety issues, and posing a major safety hazard. Utility Model Content

[0005] The purpose of the utility model is to provide a protective cover for the piston rod of a wind turbine pitch cylinder to solve the problem raised in the above-mentioned background technology that the pitch cylinder piston rod is not equipped with a protective cover when the unit is designed at the factory; as the running time of the unit accumulates, the pitch cylinder piston rod is affected by the falling of components in the hub or the trampling of maintenance personnel during maintenance, etc., which leads to aggravated wear and surface scratches on the pitch cylinder piston rod and reduces the service life; resulting in an increase in derivative defects such as oil leakage of the unit and low pressure of the hydraulic system, and the exposed safety issues are becoming increasingly prominent, posing a large safety hazard.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a fan pitch cylinder piston rod protective sleeve, comprising:

[0008] A main body component, the main body component comprising a protective cover body, a zipper and a clamp;

[0009] The zipper is sewn inside one end of the protective cover body, two groups of clamps are provided, and the clamps are fixed on the left and right sides of the outer surface of the protective cover body, and the zipper is located inside the clamps.

[0010] Further, it also includes a guide component;

[0011] The guide assembly includes a fixed frame, a movable plate and a limit plate;

[0012] Among them, the fixed frame is pasted on the outer surface of the protective cover body. There are two groups of fixed frames, which are symmetrically distributed on the outer surface of the protective cover body. Any group of the fixed frames is movably connected with a movable plate inside. There are two groups of movable plates. A limiting plate is fixed on the surface of any group of the movable plates.

[0013] Furthermore, one end of the upper surface of the limiting plate at the top is movably connected with a guide buckle, and a limiting rod is fixed on the lower surface of the guide buckle, and the limiting rod penetrates and is connected to the interior of the limiting plate.

[0014] Furthermore, a rotating column is rotatably connected inside the bottom end of the limiting rod, and a movable groove is provided inside the rotating column.

[0015] Furthermore, movable blocks are slidably connected inside the two sides of the movable groove, movable blocks are fixed inside the movable blocks, and magnetic blocks are fixed inside the movable blocks.

[0016] Furthermore, a magnetic column is magnetically connected to the outer surface of the top of the magnetic block, the upper surface of the magnetic column is fixed to the lower surface of the limit plate, and a connecting rope is fixed to the surface of one end of the movable block, and the connecting rope passes through and is connected to the inside of the rotating column.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The utility model solves the problem of protecting the surface of the piston rod of the pitch cylinder from being damaged by the falling of small components and being stepped on by maintenance personnel by providing a corrugated protective cover, and realizes the full-process protection of the piston rod of the wind turbine pitch cylinder within the pitch angle range of -3.3°--87°. The protective cover is made of black Hypalon material with high physical and mechanical properties and multiple characteristics such as aging resistance, high temperature resistance, oil resistance, flame resistance, and wear resistance. It will not deteriorate due to oil immersion, high temperature and other environmental factors, resulting in the risk of surface wear of the piston rod of the pitch cylinder. This solution reduces the failure rate of the piston rod of the pitch cylinder, reduces the risk of oil leakage, low pressure, fire, and runaway caused by wear of the piston rod of the pitch cylinder, and improves the safety and reliability of the wind turbine.

[0019] 2. Based on the first beneficial effect, with the cooperation of the guide assembly, first fix the fixed frame on the outer surface of the protective cover body, and then insert the movable plate into the fixed frame, so that the limit plate can be fixed to the upper and lower ends of the protective cover, and after changing the state of the rotating column so that the rotating column is in a horizontal state, apply a pushing force to the movable block so that the magnetic block and the magnetic column fit together, and then the protective cover body can be clamped on the outer surface of the piston rod. This solution avoids the displacement of the protective cover body when fixing the clamp, and the need to adjust the position of the protective cover body again, and the movable plate is movably connected to the inside of the fixed frame, and the limit plate can be repeatedly used.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0023] Figure 2 This is the structural diagram of the guide component of the utility model

[0024] Figure 3 For this utility model Figure 2 A magnified image

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 11. Protective cover body; 12. Zipper; 13. Hoop;

[0027] 21. Fixed frame; 22. Movable plate; 23. Limiting plate; 24. Guide buckle; 25. Limiting rod; 26. Rotating column; 27. Movable slot; 28. Moving block; 29. ​​Movable block; 291. Magnetic block; 292. Magnetic column; 293. Connecting rope. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1 As shown, this embodiment is a wind turbine pitch cylinder piston rod protective sleeve, comprising:

[0032] The main body component includes a protective cover body 11, a zipper 12 and a clamp 13;

[0033] The zipper 12 is sewn inside one end of the protective cover body 11, and two groups of clamps 13 are provided, and the clamps 13 are fixed on the left and right sides of the outer surface of the protective cover body 11, and the zipper 12 is located inside the clamps 13;

[0034] The protective cover body 11 is made of black Hypalon material with high physical and mechanical properties and multiple characteristics such as aging resistance, high temperature resistance, oil resistance, flame resistance, and wear resistance, and is processed into a corrugated shape to meet the protection of small components from falling, being smashed, and being stepped on. The zipper 12 is used to fix the protective cover body 11 to the outer surface of the piston rod; the protective cover of the clamp 13 meets the working conditions of repeated extension and retraction of the piston rod of the pitch cylinder;

[0035] When installing the protective cover body 11;

[0036] First, after the protective cover body 11 is manufactured according to the dimensions measured on site, the zipper 12 is opened, and the protective cover body 11 is installed to the periphery of the piston rod of the pitch cylinder; then the zipper 12 is closed, and the clamp 13 is used to lock and fix it. After the installation is completed, the wind turbine control panel is used to perform a pitch test to check whether the installation position of the clamp 13 interferes during the extension and retraction of the piston rod of the pitch cylinder. If there is any abnormality, fine-tune it;

[0037] This step reduces the failure rate of the pitch cylinder piston rod and the risk of oil leakage, low pressure, fire and runaway caused by wear of the pitch cylinder piston rod, thereby improving the safety and reliability of the wind turbine.

[0038] See also Figure 1-Figure 3 As shown, this embodiment is based on the above-mentioned embodiment 1 and further includes a guide component;

[0039] The guide assembly includes a fixed frame 21, a movable plate 22 and a limit plate 23;

[0040] The fixing frame 21 is attached to the outer surface of the protective cover body 11. There are two sets of fixing frames 21, which are symmetrically distributed on the outer surface of the protective cover body 11. A movable plate 22 is movably connected inside any set of fixing frames 21. There are two sets of movable plates 22. A limiting plate 23 is fixed on the surface of any set of movable plates 22.

[0041] The fixed frame 21 is used to install the movable plate 22, and the movable plate 22 is used to install the limiting plate 23, and the limiting plate 23 is used to limit the protective cover body 11 at a desired position;

[0042] A guide buckle 24 is movably connected to one end of the upper surface of the top limit plate 23, and a limit rod 25 is fixed to the lower surface of the guide buckle 24. The limit rod 25 penetrates and is connected to the inside of the limit plate 23;

[0043] The guide buckle 24 facilitates applying a pulling force to the limit rod 25, and the limit rod 25 is used to connect the limit plates 23 at the upper and lower ends together;

[0044] The bottom end of the limiting rod 25 is internally rotatably connected to a rotating column 26, and a movable groove 27 is provided inside the rotating column 26;

[0045] By changing the position of the rotating column 26, the limiting rod 25 is fixed inside the limiting plate 23, and the movable groove 27 is used for the moving block 28 and the movable block 29 to move inside it;

[0046] Moving blocks 28 are slidably connected inside the two sides of the movable groove 27, a moving block 29 is fixed inside the moving block 28, and a magnetic block 291 is fixed inside the moving block 29;

[0047] The moving block 28 is used to limit the movable block 29 in the movable groove 27. The movable block 29 receives and installs the magnetic block 291. The magnetic block 291 is used to be magnetically connected with the magnetic column 292, so as to fix the rotating column 26 to a horizontal state.

[0048] The outer surface of the top of the magnetic block 291 is magnetically connected to a magnetic column 292, the upper surface of the magnetic column 292 is fixed to the lower surface of the limit plate 23, and a connecting rope 293 is fixed to one end surface of the movable block 29, and the connecting rope 293 passes through and is connected to the inside of the rotating column 26:

[0049] The connecting rope 293 facilitates the pulling of the movable block 29 in the movable groove 27;

[0050] When installing the protective cover body 11;

[0051] First, fix the fixed frame 21 on the outer surface of the protective cover body 11, and then insert the movable plate 22 into the fixed frame 21, so that the limit plate 23 can be fixed on the upper and lower ends of the protective cover body 11, and the limit rod 25 is inserted into the limit plate 23, so that the lower surface of the guide buckle 24 is in contact with the upper surface of the limit plate 23, and then an upward lifting force is applied to the rotating column 26 to make the rotating column 26 in a horizontal state, and then a pushing force is applied to the movable block 29 to make the magnetic block 291 and the magnetic column 292 in contact, so that the rotating column 26 is kept in a horizontal state, and then the protective cover body 11 can be clamped on the outer surface of the piston rod;

[0052] This step prevents the protective cover body 11 from being displaced when the clamp 13 is fixed, and the position of the protective cover body 11 needs to be adjusted again. The movable plate 22 is movably connected to the inside of the fixed frame 21, and the limiting plate 23 can be repeatedly used.

[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wind turbine pitch cylinder piston rod protective sleeve, characterized in that: include: A main body component, the main body component comprising a protective cover body (11), a zipper (12) and a hoop (13); The zipper (12) is sewn inside one end of the protective cover body (11), two groups of clamps (13) are provided, and the clamps (13) are fixed on the left and right sides of the outer surface of the protective cover body (11), and the zipper (12) is located inside the clamps (13).

2. A wind turbine pitch cylinder piston rod protective sleeve according to claim 1, characterized in that: Also included is a guide assembly; The guide assembly comprises a fixed frame (21), a movable plate (22) and a limiting plate (23); The fixing frame (21) is adhered to the outer surface of the protective cover body (11), and two groups of the fixing frames (21) are provided, and are symmetrically distributed on the outer surface of the protective cover body (11) in an upper and lower manner. A movable plate (22) is movably connected inside any group of the fixing frames (21), and two groups of the movable plates (22) are provided. A limiting plate (23) is fixed on the surface of any group of the movable plates (22).

3. A wind turbine pitch cylinder piston rod protective sleeve according to claim 2, characterized in that: One end of the upper surface of the limiting plate (23) at the top is movably connected with a guide buckle (24), and a limiting rod (25) is fixed on the lower surface of the guide buckle (24), and the limiting rod (25) penetrates and is connected to the inside of the limiting plate (23).

4. A wind turbine pitch cylinder piston rod protective sleeve according to claim 3, characterized in that: The bottom end of the limiting rod (25) is rotatably connected to a rotating column (26), and a movable groove (27) is provided inside the rotating column (26).

5. A wind turbine pitch cylinder piston rod protective sleeve according to claim 4, characterized in that: Moving blocks (28) are slidably connected inside the two sides of the movable groove (27), a moving block (29) is fixed inside the moving block (28), and a magnetic block (291) is fixed inside the moving block (29).

6. A wind turbine pitch cylinder piston rod protective sleeve according to claim 5, characterized in that: The outer surface of the top end of the magnetic block (291) is magnetically connected to a magnetic column (292), the upper surface of the magnetic column (292) is fixed to the lower surface of the limiting plate (23), and a connecting rope (293) is fixed to one end surface of the movable block (29), and the connecting rope (293) passes through and is connected to the inside of the rotating column (26).

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