A tool for facilitating the disassembly of a fan impeller

Abstract

The utility model discloses a kind of implement that realizes fan impeller disassembly convenient, belong to fan maintenance technical field, including positioning rod, multiple positioning rod is fixedly connected on impeller upper surface symmetrically, and the upper end portion of positioning rod is from the through hole of top rod lower surface and is passed into its inside, and the outer wall of positioning rod is attached to the inner wall of through hole, multiple top rod is vertically set on impeller upper surface, the bolt is threadedly connected on the positioning rod, and the bolt is compressed to attach on the upper surface of impeller by top rod, and multiple top rod is vertically provided with pneumatic cylinder between;The utility model can avoid damage when impeller disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine maintenance technology, and in particular relates to a tool for convenient disassembly of wind turbine impellers. Background Technology

[0002] The Bruckner thin film production line uses a large number of impeller fans. When the fans are maintained and the bearings are replaced, the impellers need to be disassembled. However, in order to ensure the tightness of the impellers installed on the shaft, a cold installation method is usually adopted, that is, the size of the components is reduced by cooling to facilitate installation. After returning to normal temperature, a tight fit is formed, which makes it difficult to disassemble the impellers. Moreover, violent disassembly can easily damage the impellers. A structure that facilitates the disassembly of the impellers is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a convenient tool for disassembling wind turbine impellers, thus solving the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tool for convenient disassembly of a wind turbine impeller, comprising positioning rods, multiple positioning rods symmetrically fixedly connected to the upper surface of the impeller, the upper end of each positioning rod penetrating through a through hole on the lower surface of a push rod, the outer wall of the positioning rod fitting against the inner wall of the through hole, multiple push rods vertically arranged on the upper surface of the impeller, bolts threaded onto each positioning rod, the bolts pressing the push rods to fit against the upper surface of the impeller, and a cylinder vertically arranged between the multiple push rods.

[0005] Beneficial effects

[0006] This utility model provides a convenient tool for disassembling wind turbine impellers, which has the following advantages compared with the prior art:

[0007] 1. The user positions multiple push rods perpendicular to the upper surface of the impeller, with the positioning rods fixedly connected to their upper surfaces aligned with the through holes on the lower surfaces of the push rods. The user then presses down on the multiple push rods, causing the upper ends of the positioning rods to pass through the through holes. At this point, the upper ends of the bolts are in the push rods. The user can then screw the bolts into the upper ends of the positioning rods and tighten them, pressing the lower surfaces of the push rods tightly against the upper surfaces of the impeller. Since the multiple push rods are parallel to the cylinder, when the cylinder is started, it applies an upward thrust to the multiple push rods. Under the action of the multiple push rods, the impeller and the impeller shaft slide relative to each other, gradually removing the impeller from the impeller shaft. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0009] Figure 2 This is a cross-sectional structural diagram of this embodiment.

[0010] Figure 3 This embodiment Figure 2 An enlarged schematic diagram of structure A in the image.

[0011] Figure 4 This embodiment Figure 1 An enlarged schematic diagram of the B structure in the image.

[0012] Figure reference numerals: Impeller 101, Positioning rod 201, Bolt 202, Top rod 203, Cylinder 204, Connecting plate 205, Frame 206, Base 207, Connector 208, Slot 209, Protrusion 301, Groove 302, Connecting ring 304, Hammer rod 305. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0015] Please see Figures 1-4 This utility model provides a convenient tool for disassembling a wind turbine impeller, comprising positioning rods 201, a plurality of positioning rods 201 symmetrically fixedly connected to the upper surface of the impeller 101, and the upper end of the positioning rod 201 penetrating into a through hole on the lower surface of a top rod 203, with the outer wall of the positioning rod 201 fitting against the inner wall of the through hole. A plurality of top rods 203 are vertically arranged on the upper surface of the impeller 101, and bolts 202 are threadedly connected to the positioning rods 201, with the bolts 202 pressing the top rods 203 to fit against the upper surface of the impeller 101. A cylinder 204 is vertically arranged between the plurality of top rods 203.

[0016] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific 201 described in the above embodiments. For example, the components in the structure such as 201 are all made of high-hardness metal materials, and the joints are all further hardened and reinforced to avoid them from breaking under stress.

[0017] In the above embodiment, the user positions the multiple push rods 203 perpendicular to the upper surface of the impeller 101, with the positioning rod 201 fixedly connected to its upper surface aligned with the through hole on the lower surface of the push rod 203. The user then presses down on the multiple push rods 203, causing the upper end of the positioning rod 201 to pass through the through hole. At this point, the upper end of the bolt 202 is inside the push rod 203. The user can then screw the bolt 202 into the upper end of the positioning rod 201 and tighten it, thereby positioning the push rod... The lower surface of 203 is pressed tightly against the upper surface of the impeller 101. At this time, multiple push rods 203 are parallel to the cylinder 204. Therefore, with the cylinder 204 vertically set on the impeller shaft 102, when the cylinder 204 is started, an upward thrust can be applied to the multiple push rods 203 through the cylinder 204. Under the action of the multiple push rods 203, the impeller 101 and the impeller shaft 102 can slide relative to each other, thereby gradually removing the impeller 101 from the impeller shaft 102.

[0018] Specifically, the cylinder 204 is provided with a connecting assembly for causing multiple push rods 203 to slide upward synchronously. The connecting assembly includes a connecting plate 205, which is horizontally disposed above the impeller 101. The output end of the cylinder 204 is fixedly connected to the axis of the connecting plate 205, and the upper ends of the multiple push rods 203 are all hinged to the outer wall of the connecting plate 205.

[0019] Specifically, the lower end of the cylinder 204 is fixedly connected to the frame 206, the frame 206 is coaxial with the impeller shaft 102, and the connecting plate 205 is vertically slidably disposed on the frame 206.

[0020] In the above embodiment, when multiple push rods 203 are fixed on the upper surface of the impeller 101, the push rods 203 are perpendicular to the connecting plate 205. Therefore, when the cylinder 204 is started, the output end of the cylinder 204 can push the connecting plate 205 upward. At this time, the connecting plate 205 can apply a vertical upward thrust to the push rods 203, thereby pulling the impeller 101 to slide along the axial direction of the impeller shaft 102.

[0021] Specifically, the connecting assembly further includes a positioning assembly for applying axial thrust of the cylinder 204 to the impeller 101. The positioning assembly includes a connector 208, a base 207, and a vibration assembly. The connector 208 is vertically fixed to the axis of the impeller shaft 102, and a slot 209 is provided at the axis of the lower end face of the base 207. The connector 208 is inserted into the slot 209. The lower surface of the frame 206 is vertically and rotatably disposed on the upper surface of the base 207. The inner wall of the slot 209 is attached to the outer wall of the connector 208.

[0022] The vibration assembly is used to provide horizontal thrust to the impeller 101.

[0023] In the above embodiment, before fixing the multiple push rods 203 to the upper surface of the impeller 101, the user should manually press the base 207 so that the connector 208 is inserted into the slot 209 provided on its lower surface, and the upper end of the connector 208 contacts the top of the slot 209. Then, the user can adjust the height of the output end of the cylinder 204 so that the lower surface of the push rod 203 can pass through the positioning rod 201 and fit tightly against the upper surface of the impeller 101. After the push rod 203 is fixed, the cylinder 204 can be activated, so that the cylinder 204 pulls the impeller 101 to slide on the impeller shaft 102 with the impeller shaft 102 as the fulcrum, so that the user can remove the impeller 101. Due to the reaction force generated when removing the impeller 101, the cylinder 204 can also press the base 207 tightly on the impeller shaft 102, so as to prevent the impeller shaft 102 from being tilted, which would cause the tension on the impeller 101 to be not in the vertical direction and thus damage the impeller 101.

[0024] Specifically, the inner wall of the slot 209 is symmetrically and vertically provided with two protrusions 301, and the outer wall of the connector 208 is vertically provided with a groove 302 corresponding to the protrusions 301, and the protrusions 301 are inserted into the grooves 302.

[0025] Specifically, the vibration assembly includes a hammer rod 305, which is disposed between two adjacent top rods 203. Multiple hammer rods 305 are respectively fixedly connected to the outer wall of the connecting ring 304, and the connecting ring 304 is rotatably connected to the outer wall of the base 207.

[0026] Specifically, the length of the hammer rod 305 is greater than the distance between the top rod 203 and the connecting ring 304, and the hammer rod 305 is a solid round tube.

[0027] In the above embodiment, during the process of inserting the connector 208 into the slot 209, the protrusion 301 in the slot 209 should be aligned with the groove 302, so that the protrusion 301 can be inserted into the groove 302, thereby limiting the rotation of the base 207, allowing it to rotate or stop synchronously with the impeller shaft 102. Since the impeller shaft 102 needs to be locked during the disassembly of the impeller 101, the base 207 cannot rotate. Subsequently, while the push rod 203 pulls the impeller 101 upward, the user can use a tool to periodically hammer the hammer rod 305 along the circumference of the connecting ring 304, so that multiple hammer rods 305 contact their corresponding push rods 203, thereby applying a horizontal pushing force to the push rods 203, which helps to disassemble the impeller 101 from the impeller shaft 102.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0030] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0031] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0032] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0033] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool for convenient disassembly of a wind turbine impeller, characterized in that, The impeller (101) includes a positioning rod (201), and multiple positioning rods (201) are symmetrically fixedly connected to the upper surface of the impeller (101). The upper end of the positioning rod (201) passes through the through hole on the lower surface of the push rod (203), and the outer wall of the positioning rod (201) is attached to the inner wall of the through hole. Multiple push rods (203) are vertically arranged on the upper surface of the impeller (101). Bolts (202) are threaded onto the positioning rod (201), and the bolts (202) press the push rods (203) to fit against the upper surface of the impeller (101). A cylinder (204) is vertically arranged between the multiple push rods (203).

2. The tool for convenient disassembly of a wind turbine impeller according to claim 1, characterized in that, The cylinder (204) is provided with a connecting assembly for making multiple push rods (203) slide upward synchronously. The connecting assembly includes a connecting plate (205), which is horizontally arranged above the impeller (101). The output end of the cylinder (204) is fixedly connected to the axis of the connecting plate (205), and the upper ends of the multiple push rods (203) are all hinged to the outer wall of the connecting plate (205).

3. The tool for convenient disassembly of a wind turbine impeller according to claim 2, characterized in that, The lower end of the cylinder (204) is fixedly connected to the frame (206), the frame (206) is coaxial with the impeller shaft (102), and the connecting plate (205) is vertically slidably arranged on the frame (206).

4. The tool for convenient disassembly of a wind turbine impeller according to claim 3, characterized in that, The connecting assembly further includes a positioning assembly for applying axial thrust of the cylinder (204) to the impeller (101). The positioning assembly includes a connector (208), a base (207), and a vibration assembly. The connector (208) is vertically fixed to the axis of the impeller shaft (102), and a slot (209) is provided at the axis of the lower end face of the base (207). The connector (208) is inserted into the slot (209). The lower surface of the frame (206) is vertically and rotatably disposed on the upper surface of the base (207). The inner wall of the slot (209) is attached to the outer wall of the connector (208). The vibration assembly is used to provide horizontal thrust to the impeller (101).

5. The tool for convenient disassembly of a wind turbine impeller according to claim 4, characterized in that, The inner wall of the slot (209) is symmetrically and vertically provided with two protrusions (301), and the outer wall of the connector (208) is vertically provided with a groove (302) corresponding to the protrusions (301), and the protrusions (301) are inserted into the groove (302).

6. The tool for convenient disassembly of a wind turbine impeller according to claim 1, characterized in that, (201) is a high-hardness metal.

7. The tool for convenient disassembly of a wind turbine impeller according to claim 4, characterized in that, The vibration assembly includes a hammer rod (305), which is disposed between two adjacent top rods (203). Multiple hammer rods (305) are respectively fixedly connected to the outer wall of the connecting ring (304), and the connecting ring (304) is rotatably connected to the outer wall of the base (207).

8. The tool for convenient disassembly of a wind turbine impeller according to claim 7, characterized in that, The length of the hammer rod (305) is greater than the distance between the top rod (203) and the connecting ring (304), and the hammer rod (305) is a solid round tube.

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