Impeller locking device
By designing an impeller locking device including a fixed ring, a rotary ring, a movable ring, a pin column, an elastic member, a pendant and a positioning structure, the problems of complex impeller locking operation and equipment impact in the prior art are solved, and the effect of simplifying operation and improving safety is achieved.
Patent Information
- Application Number
- CN202422077400.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing impeller locking device is complex in operation and requires two people to cooperate. Due to the inertia and impact of the impeller, the locking process is difficult and may cause equipment to vibrate.
An impeller locking device including a fixed ring, a rotary ring, a movable ring, a pin column, an elastic member, a pendant and a positioning structure is designed. The pin column is slowly inserted into the impeller lock hole through the elastic member, and the rotation ring is driven by the movable ring and the guide rod, combining the positioning structure of the ratchet and pawl to achieve safe locking of the impeller.
The impeller locking operation is simplified, the operation difficulty and equipment impact are reduced, and the lock hole position is not required, improving operational safety and efficiency.
Smart Images
Figure CN222976955U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of impeller locking, and particularly to an impeller locking device. Background Art
[0002] Generally, an impeller locking device uses a locking pin column inserted through the frame of a wind turbine nacelle into the pin hole of an impeller or a locking disc connected to the impeller to lock the impeller and ensure the safety of workers during shutdown maintenance. However, since it is not easy to observe whether the positions of the pin hole and the locking pin column correspond, usually two people are required for the operation. The impeller locking operation is carried out after using the braking device of the wind turbine to brake and reduce the impeller speed to a slow rotation; because the impeller or its connected locking disc is still rotating and has a large inertia, it increases the difficulty of the impeller locking operation, and when the locking is formed, the impeller stops rotating immediately, causing certain impact and vibration to the equipment. Summary of the Utility Model
[0003] The purpose of the utility model is to solve the problems in the above-mentioned prior art and provide an impeller locking device.
[0004] To achieve the above purpose, the utility model provides the following technical solutions:
[0005] The impeller locking device includes a fixed ring, a rotating ring, a movable ring that moves axially, a pin column that cooperates with the lock hole of the impeller, an elastic member, a hanging member, and a positioning structure; the rotating ring is rotatably connected to the fixed ring, and the pin column is connected to one side of the movable ring; an elastic member is connected between the movable ring and the rotating ring, the hanging member is connected to the movable ring, the hanging member is hung on the rotating ring to compress the elastic member, and a positioning structure for positioning the rotating ring is provided between the fixed ring and the rotating ring.
[0006] Further, a sphere is connected to the end of the pin column through a ball joint.
[0007] Further, several guide rods are provided on one side of the rotating ring, the guide rods are axially parallel to the movable ring, and the movable ring is slidably connected to the guide rods.
[0008] Further, the elastic member is a spring, and the spring is sleeved between the rotating ring and the movable ring outside the guide rod.
[0009] Further, the inner diameter of the movable ring is smaller than the inner diameter of the rotating ring; the hanging member includes a hanging plate and a first bolt, the hanging plate is connected to the inner ring of the movable ring, the first bolt passes through the hanging plate and is threadedly connected to the hanging plate, and the hanging plate is hung on the inner ring of the rotating ring through the first bolt.
[0010] Further, the positioning structure includes a ratchet and a pawl, the ratchet is annular and connected to one side of the rotating ring, and the pawl is rotatably connected to the fixed ring and cooperates with the ratchet.
[0011] Further, a second bolt is passed through the pawl, and two internal threaded holes cooperating with the second bolt are provided on the side surface of the fixing ring.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] By releasing the hanging state of the hanging part, the movable ring and the pin can be released in the present utility model. The elastic member enables the pin to be inserted into the locking hole of the slowly rotating impeller to form a fit. The impeller drives the movable ring and the rotating ring to rotate. After the impeller completely stops, the positioning structure positions the rotating ring and then locks the impeller. Therefore, the present utility model does not need to observe the position of the locking hole, and can effectively reduce the operation difficulty and impact of locking the impeller.
[0014] In the present utility model, the elastic member makes the pin fit with the side surface of the rotating impeller and the locking hole. By providing a sphere at the end of the pin, the friction between the pin and the impeller is reduced, so that the pin can smoothly enter the locking hole of the impeller.
[0015] The present utility model has a guide rod for guiding the movement of the movable ring, which not only ensures the accuracy of the movement of the movable ring; after the pin and the locking hole are fitted, the impeller can drive the rotating ring to rotate through the movable ring and the guide rod.
[0016] The present utility model adopts a positioning structure with a ratchet and a pawl to realize the locking of the position of the rotating ring, and further realize the locking of the impeller. After the impeller is braked, the pawl can be locked at various positions on the circumference of the ratchet, and there is no need to observe the position limiting the ratchet. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic cross-sectional structure diagram of the present utility model.
[0018] Figure 2 is a schematic outer side view structure diagram of the present utility model.
[0019] Figure 3 is a schematic end face structure diagram of the present utility model.
[0020] Figure 4 is a schematic three-dimensional structure diagram of the present utility model.
[0021] Figure 5 is a schematic diagram of the first perspective of the exploded state of the present utility model.
[0022] Figure 6 is a schematic diagram of the second perspective of the exploded state of the present utility model.
[0023] In the figure: 1, fixing ring; 2, rotating ring; 3, movable ring; 4, pin; 5, elastic member; 6, hanging part; 7, positioning structure; 8, sphere; 9, guide rod;
[0024] 10, impeller; 11, locking hole;
[0025] 61. Hanging plate; 62. First bolt; 71. Ratchet wheel; 72. Pawl; 73. Internal thread hole; 74. Second bolt. Specific embodiments
[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.
[0027] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.
[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object of "provided with" can be a part of the body, or it can be arranged separately from the body and connected to the body, and this connection can be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.
[0029] The following further describes the present utility model in detail with reference to the embodiments.
[0030] Specific embodiments of the impeller locking device provided by the present utility model:
[0031] Please refer to Figure 1-6 , the impeller locking device includes a fixed ring 1, a rotating ring 2, a movable ring 3 that moves axially, a pin 4 that cooperates with the locking hole 11 of the impeller 10, an elastic member 5, a hanging member 6 and a positioning structure 7; the axial centerlines of the fixed ring 1, the rotating ring 2, the movable ring 3 and the impeller 10 are on the same straight line. The fixed ring 1 is fixed on the nacelle frame of the wind turbine. In some other embodiments, the pin 4 does not cooperate with the impeller 10, but cooperates with a locking disc, and the locking disc is connected to the impeller 10.
[0032] The rotating ring 2 is rotatably connected to the fixed ring 1, such as Figure 5 and Figure 6As shown in the figure, an annular groove is provided on the inner ring side of the fixed ring 1. The outer edge of the rotating ring 2 is located in the annular groove inside the fixed ring 1, enabling the rotating ring 2 to rotate under the support of the fixed ring 1.
[0033] The pin column 4 is connected to one side of the movable ring 3; in this embodiment, the impeller 10 has three locking holes 11; three pin columns 4 are provided on the side of the movable ring 3.
[0034] On the side of the rotating ring 2 facing the movable ring 3, three guide rods 9 are provided. The guide rods 9 are parallel to the axial direction of the rotating ring 2 and the movable ring 3. The movable ring 3 is slidably connected to the guide rods 9. The guide rods 9 pass through the movable ring 3, and a disc-shaped limiting block is provided at the end of the guide rods 9. The movable ring 3 is provided with through holes that slidably cooperate with the guide rods 9, and the outer diameter of the limiting block is larger than the inner diameter of the through holes.
[0035] An elastic member 5 is connected between the movable ring 3 and the rotating ring 2. In this embodiment, the elastic member 5 is a spring, and the spring is sleeved between the rotating ring 2 and the movable ring 3 outside the guide rods 9; the number of springs is three, corresponding to the three guide rods 9 one by one.
[0036] The hanging member 6 is connected to the movable ring 3, and the hanging member 6 is hooked to the rotating ring 2 to compress the elastic member 5. Specifically, the inner diameter of the movable ring 3 is smaller than the inner diameter of the rotating ring 2; the hanging member 6 includes a hanging plate 61 and a first bolt 62. The hanging plate 61 is connected to the inner ring of the movable ring 3, and the first bolt 62 passes through the middle of the hanging plate 61 and is threadedly connected to the hanging plate 61. The hanging plate 61 is hooked to the inner ring of the rotating ring 2 through the first bolt 62.
[0037] In this embodiment, the number of the hanging members 6 is two groups, which are symmetrically arranged. The hanging plate 61 passes through the rotating ring 2 from the inside of the rotating ring 2, and the end of the hanging plate 61 is perpendicularly bent towards the outer ring direction of the rotating ring 2. When the first bolt 62 passes through the hanging plate 61, the first bolt 62 extends to the inner ring of the rotating ring 2 on the side opposite to the movable ring 3, and the spring is in a compressed state. At this time, there is an axial gap between the pin column 4 and the impeller 10 and they do not contact.
[0038] The impeller 10 slowly rotates under the action of the braking device of the wind turbine. Unscrew and remove the first bolt 62, and the spring moves the movable ring 3 towards the impeller 10. The pin column 4 first fits against the side of the slowly rotating impeller 10. The spring moves the movable ring 3 and the pin column 4 towards the impeller 10. When the pin column 4 corresponds to the locking hole 11, the pin column 4 extends into the locking hole 11 under the action of the spring. The impeller 10 drives the movable ring 3 to rotate through the pin column 4, and the movable ring 3 drives the rotating ring 2 to rotate through the guide rods 9. At this time, the bent portion of the hanging plate 61 supports at the inner ring of the rotating ring 2 on the side opposite to the movable ring 3.
[0039] In this embodiment, the first bolt 62 is a bolt with a handle, which facilitates the direct manual loading and unloading of the first bolt 62. The end of the pin 4 is connected with a sphere 8 through a spherical pair. When the pin 4 fits against the side of the impeller 10, the sphere 8 contacts the impeller 10 and can roll, reducing the friction between the pin 4 and the impeller 10.
[0040] A positioning structure 7 for positioning the rotating ring 2 is provided between the fixed ring 1 and the rotating ring 2. After the pin 4 is engaged with the lock hole 11, the movable ring 3 and the rotating ring 2 rotate slowly synchronously with the impeller 10. After the braking device of the wind turbine stops the impeller 10 from rotating, the positioning structure 7 is used to position the rotating ring 2 to lock the rotating ring 2, and then the impeller 10 is positioned and locked.
[0041] In this embodiment, the positioning structure 7 includes a ratchet wheel 71, a pawl 72, an internal thread hole 73 and a second bolt 74. The ratchet wheel 71 is annular and connected to one side of the rotating ring 2. The pawl 72 is rotatably connected to the fixed ring 1 and cooperates with the ratchet wheel 71. When the rotating ring 2 and the ratchet wheel 71 stop rotating, the pawl 72 is engaged with the ratchet wheel 71 to achieve the positioning and locking of the ratchet wheel 71 and the rotating ring 2. Since the wind turbine is designed to rotate in one direction, in this embodiment, a single set of ratchet wheel 71 and pawl 72 meshing structure can be used to achieve the positioning and locking of the rotating ring 2.
[0042] A second bolt 74 is passed through the pawl 72. The second bolt 74 is a bolt with a handle, which is convenient for manual rotation. The pawl 72 has a through hole for the second bolt 74 to pass through. The cross-sectional area of the through hole is larger than the cross-sectional area of the threaded section of the second bolt 74, and the cross-sectional area of the through hole is smaller than the cross-sectional area of the handle part of the second bolt 74. Two internal thread holes 73 for cooperating with the second bolt 74 are provided on the side of the fixed ring 1. When the second bolt 74 is respectively engaged with the two internal thread holes 73, the pawl 72 is at two different angles. When the pawl 72 is at the first angle, the pawl 72 is engaged with the ratchet wheel 71. When the pawl 72 is at the second angle, the pawl 72 is separated from the ratchet wheel 71.
[0043] Before the locking operation is carried out, the pawl 72 is first placed at the second angle through the second bolt 74, which does not affect the rotation of the ratchet wheel 71 with the rotating ring 2. After the impeller 10 is braked, the pawl 72 is engaged with the ratchet wheel 71, and then the pawl 72 is limited to the first angle by the second bolt 74, so that the pawl 72 is in an engaged state with the ratchet wheel 71, ensuring the safe positioning and locking of the rotating ring 2, the movable ring 3 and the impeller 10.
[0044] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. Impeller locking device, characterized in that: The invention comprises a fixed ring (1), a rotating ring (2), an axially movable ring (3), a pin (4) matched with a locking hole (11) of an impeller (10), an elastic member (5), a hanging member (6) and a positioning structure (7); the rotating ring (2) is rotatably connected to the fixed ring (1), and the pin (4) is connected to one side of the movable ring (3); an elastic member (5) is connected between the movable ring (3) and the rotating ring (2), the hanging member (6) is connected to the movable ring (3), the hanging member (6) and the rotating ring (2) are hung to compress the elastic member (5), and a positioning structure (7) for positioning the rotating ring (2) is provided between the fixed ring (1) and the rotating ring (2).
2. The impeller locking device according to claim 1, characterized in that: The end of the pin (4) is connected to a spherical body (8) via a ball pair.
3. The impeller locking device according to claim 1, characterized in that: A plurality of guide rods (9) are provided on one side of the rotating ring (2); the guide rods (9) are axially parallel to the movable ring (3); and the movable ring (3) is slidably connected to the guide rods (9).
4. The impeller locking device according to claim 3, characterized in that: The elastic member (5) is a spring, which is sleeved between the rotating ring (2) and the movable ring (3) outside the guide rod (9).
5. The impeller locking device according to claim 1, characterized in that: The inner diameter of the movable ring (3) is smaller than the inner diameter of the rotating ring (2); the hanging component (6) comprises a hanging plate (61) and a first bolt (62); the inner ring of the movable ring (3) is connected to the hanging plate (61); the first bolt (62) passes through the hanging plate (61) and is connected to the hanging plate (61) by a thread; the hanging plate (61) is hung on the inner ring of the rotating ring (2) by the first bolt (62).
6. The impeller locking device according to claim 1, characterized in that: The positioning structure (7) comprises a ratchet (71) and a pawl (72); the ratchet (71) is annular in shape and connected to one side of the rotating ring (2); the pawl (72) is rotatably connected to the fixed ring (1) and cooperates with the ratchet (71).
7. The impeller locking device according to claim 6, characterized in that: A second bolt (74) is passed through the ratchet (72), and two internal threaded holes (73) cooperating with the second bolt (74) are provided on the side surface of the fixing ring (1).