A wind turbine bolt fastening device

Abstract

A wind turbine bolt fastening device, comprising a fastening instrument, an annular baffle, an annular receiving disc, a motor shaft, a motor shaft sleeve, a limiting plate, a guide rod, a spring, and a bolt head sleeve, the lower part of the fastening instrument is provided with an instrument handle, one end of the annular baffle is connected with the fastening instrument, the other end of the annular baffle is connected with the annular receiving disc, the side of the annular receiving disc is provided with a receiving disc side plate, the bolt head sleeve is adapted to the annular receiving disc, the bolt head sleeve is arranged in the annular receiving disc, the bolt head sleeve rotates in the annular receiving disc, the bolt head sleeve slides in the annular receiving disc, a plurality of bolt head sleeves are distributed in the annular receiving disc, the side of the bolt head sleeve is provided with a sleeve side plate, the sleeve side plate is adapted to the receiving disc side plate, and the sleeve side plate is inserted into the receiving disc side plate. The sleeve side plate slides in the receiving disc side plate, the inside of the annular receiving disc is provided with an intermediate sleeve, the bolt head sleeve is inserted into the intermediate sleeve, and the inner diameter of the intermediate sleeve is the same as the outer diameter of the sleeve side plate.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine generators, and in particular to a bolt fastening device for wind turbine generators. Background Technology

[0002] An existing patent (publication number: CN112936151A) discloses a bolt fastening device, comprising: an intermediate connector extending along the protrusion direction of the bolt to be fastened, the intermediate connector including a body segment, one end of which is connected to a first connecting portion, and the other end of which is provided with a second connecting portion; a sleeve detachably connected to the first connecting portion, the sleeve being fitted onto the bolt to be fastened; and an operating rod detachably connected to the second connecting portion. However, this device has a fixed size for the bolt, a fixed application range, and is not flexible in use. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a wind turbine bolt fastening device that can meet the fastening needs of bolts of different specifications by simply switching the ferrules in the storage tray, eliminating the need to prepare multiple sets of dedicated fastening equipment and reducing tool storage costs.

[0004] The objective of this utility model is achieved through the following technical solution: A bolt fastening device for a wind turbine includes a fastening instrument, an annular baffle, an annular storage tray, a motor shaft, a motor shaft outer sleeve, a limiting plate, a guide rod, a spring, and bolt head sleeves. The fastening instrument has a handle at its lower part. One end of the annular baffle is connected to the fastening instrument, and the other end of the annular baffle is connected to the annular storage tray. The annular storage tray has a storage tray side plate on its side. The bolt head sleeves are adapted to the annular storage tray and are placed inside the annular storage tray. The bolt head sleeves rotate and slide within the annular storage tray. Multiple bolt head sleeves are distributed within the annular storage tray. The bolt head sleeves have a sleeve side plate on their side, which is adapted to the storage tray side plate and is inserted into the storage tray side plate. The ferrule side plate slides inside the storage tray side plate. The annular storage tray has an intermediate sleeve inside. The bolt head ferrule is inserted into the intermediate sleeve. The inner diameter of the intermediate sleeve is the same as the outer diameter of the ferrule side plate. The ferrule side plate rotates inside the intermediate sleeve and slides inside the intermediate sleeve.

[0005] The annular storage tray has a storage tray side opening on the side, and the middle sleeve has a ferrule clearance hole. The bolt head ferrule is adapted to the ferrule clearance hole. The bolt head ferrule is inserted into the ferrule clearance hole. One side of the bolt head ferrule has a hexagonal groove, and the other side of the bolt head ferrule has a circular insertion hole. The side of the circular insertion hole has an insertion hole side limit groove. The side of the motor shaft is connected to and fastened to the side connector of the instrument.

[0006] The motor shaft is adapted to the motor shaft outer sleeve. The motor shaft is inserted into the motor shaft outer sleeve and slides inside the motor shaft outer sleeve. The side of the motor shaft has a motor shaft side groove. The inside of the motor shaft outer sleeve has a sleeve retaining strip. The sleeve retaining strip is adapted to the motor shaft side groove. The sleeve retaining strip is inserted into the motor shaft side groove and slides inside the motor shaft side groove.

[0007] The motor shaft outer sleeve is adapted to the circular insertion hole and is inserted into the circular insertion hole. The side of the motor shaft outer sleeve has an outer retaining strip, which is adapted to the limiting groove on the side of the insertion hole. The outer retaining strip is inserted into the limiting groove on the side of the insertion hole. The side of the annular storage tray has a clearance hole, and the motor shaft outer sleeve is placed in the clearance hole. The outer side of the motor shaft outer sleeve has an outer sleeve ring. The limiting plate is sleeved on the motor shaft outer sleeve, and the side of the outer sleeve ring is in contact with the limiting plate. The motor shaft outer sleeve is connected to the limiting ring, and the side of the limiting ring is in contact with the limiting plate. Beneficial effects

[0008] 1. This utility model places multiple bolt head ferrules inside an annular storage tray. The ferrule side plates are inserted into the side plates of the storage tray, preventing the bolt head ferrules from falling out and ensuring the annular storage tray remains inside. The hexagonal slots on the multiple bolt head ferrules are of different sizes, allowing the device to tighten bolts of various sizes. An annular baffle is connected at both ends to the tightening instrument and the annular storage tray, protecting the connection between the tightening instrument and the annular storage tray. The motor shaft is inserted into a motor shaft outer sleeve, forming a telescopic shaft with the motor shaft and the outer sleeve. The inner retaining strip of the sleeve is inserted into the groove on the side of the motor shaft, so that the outer sleeve of the motor shaft is aligned with the axial direction of the motor shaft. The rotation of the motor shaft drives the rotation of the outer sleeve of the motor shaft. The outer sleeve of the motor shaft is inserted into the circular insertion hole, and the outer retaining strip of the sleeve is inserted into the limiting groove on the side of the insertion hole. The outer retaining strip of the sleeve axially positions the bolt head sleeve, so that when the entire telescopic shaft is working, it rotates and drives the bolt head sleeve to rotate. The rotation of the bolt head sleeve causes the bolt head inserted in the hexagonal slot to rotate, thus tightening the bolt. The two ends of the limiting plate are respectively attached to the outer ring of the sleeve and the limiting ring distributed on the outer sleeve of the motor shaft, so that the movement of the limiting plate drives the outer sleeve of the motor shaft to slide horizontally.

[0009] 2. In this utility model, the guide rod is fixed to the side of the annular storage tray, and the other end of the guide rod is in contact with the fastening instrument. A spring is sleeved on the guide rod. The spring, supported by the fastening instrument, applies a pushing force to the side plate of the limiting plate, causing the limiting plate to move the outer sleeve of the motor shaft. This causes the outer sleeve of the motor shaft to push the bolt head sleeve out of the annular storage tray, making the bolt head sleeve usable for fastening bolts. This device can hold multiple bolt head sleeves of different sizes in the annular storage tray. When different sizes of bolts need to be fastened, the annular storage tray can be rotated to insert the required annular storage tray into the middle sleeve, and then the telescopic shaft is inserted and driven to rotate it. The device can meet the fastening needs of different specifications of bolts by switching the sleeves in the storage tray, eliminating the need to prepare multiple sets of dedicated fastening equipment and reducing tool storage costs. The structure of the telescopic shaft can simultaneously realize the transmission and ejection function of the sleeve, and the spring can automatically push the outer sleeve to push the sleeve out, eliminating the need for manual adjustment of the sleeve position and simplifying the fastening operation steps. Attached Figure Description

[0010] Figure 1 This is a right view of a bolt fastening device for a wind turbine generator as described in this utility model.

[0011] Figure 2 This is a left view of a wind turbine bolt fastening device according to the present invention.

[0012] Figure 3 This is a cross-sectional view of the annular storage tray, motor shaft, and motor shaft outer sleeve of the present invention.

[0013] Figure 4 This is a left view of the bolt head sleeve described in this utility model.

[0014] Figure 5 This is a right view of the bolt head sleeve described in this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example 1: A bolt fastening device for a wind turbine includes a fastening instrument 01, an annular baffle 03, an annular storage tray 04, a motor shaft 08, a motor shaft outer sleeve 09, a limiting plate 13, a guide rod 17, a spring 18, and bolt head sleeves 19. The fastening instrument 01 has a handle 02 at its lower part. One end of the annular baffle 03 is connected to the fastening instrument 01, and the other end is connected to the annular storage tray 04. The annular baffle 03 protects the connection between the fastening instrument 01 and the annular storage tray 04. The annular storage tray 04 has a storage tray side plate 05 on its side. The bolt head sleeves 19 are adapted to the annular storage tray 04 and are placed inside the annular storage tray 04. Multiple bolt head sleeves 19 can be placed inside the annular storage tray 04. The bolt head sleeve 19 rotates within the annular storage tray 04 and slides within it. Multiple bolt head sleeves 19 are distributed within the annular storage tray 04. The bolt head sleeve 19 has a sleeve side plate 20 on its side, which is adapted to the storage tray side plate 05. The sleeve side plate 20 is inserted into the storage tray side plate 05 and slides within it. The sleeve side plate 20 prevents the bolt head sleeve 19 from falling out of the annular storage tray 04, ensuring that the annular storage tray 04 is always placed inside it. The annular storage tray 04 has an intermediate sleeve 07 inside, into which the bolt head sleeve 19 is inserted. The inner diameter of the intermediate sleeve 07 is the same as the outer diameter of the sleeve side plate 20. The sleeve side plate 20 rotates and slides within the intermediate sleeve 07.

[0016] Example 2: The circular storage tray 04 of this utility model has a storage tray side opening 06 on its side, and a middle sleeve 07 has a sleeve relief hole 24. The bolt head sleeve 19 is adapted to the sleeve relief hole 24 and is inserted into the sleeve relief hole 24. One side of the bolt head sleeve 19 has a hexagonal groove 21. The hexagonal groove 21 on multiple bolt head sleeves 19 has different sizes, so that the device can be used to tighten multiple bolts of different sizes. The other side of the bolt head sleeve 19 has a circular insertion hole 22. The side of the circular insertion hole 22 has an insertion hole side limiting groove 23. The side of the motor shaft 08 is connected to the side connector of the fastening instrument 01.

[0017] Example 3: The motor shaft 08 of this invention is adapted to the motor shaft outer sleeve 09. The motor shaft 08 is inserted into the motor shaft outer sleeve 09 and slides within the motor shaft outer sleeve 09, so that the motor shaft 08 and the motor shaft outer sleeve 09 form a telescopic shaft. The side of the motor shaft 08 has a motor shaft side groove 16, and the inside of the motor shaft outer sleeve 09 has a sleeve inner retaining strip 15. The sleeve inner retaining strip 15 is adapted to the motor shaft side groove 16 and is inserted into the motor shaft side groove 16. The sleeve inner retaining strip 15 slides within the motor shaft side groove 16, so that the motor shaft outer sleeve 09 and the motor shaft 08 are aligned axially, so that the rotation of the motor shaft 08 drives the rotation of the motor shaft outer sleeve 09.

[0018] Example 4: The motor shaft outer sleeve 09 of this utility model is adapted to the circular insertion hole 22. The motor shaft outer sleeve 09 is inserted into the circular insertion hole 22. The side of the motor shaft outer sleeve 09 has an outer sleeve retaining strip 14, which is adapted to the insertion hole side limiting groove 23. The outer sleeve retaining strip 14 is inserted into the insertion hole side limiting groove 23. The outer sleeve retaining strip 14 axially positions the bolt head retaining sleeve 19, so that when the entire telescopic shaft rotates during operation, it drives the bolt head retaining sleeve 19 to rotate. The rotation of the bolt head retaining sleeve 19 causes the bolt head inserted in the hexagonal slot 21 to rotate, thus tightening the bolt and forming a ring. The side of the tray 04 has a clearance hole 11. The motor shaft outer sleeve 09 is placed inside the clearance hole 11. The outer side of the motor shaft outer sleeve 09 has a sleeve outer ring 10. The limiting plate 13 is sleeved on the motor shaft outer sleeve 09. The side of the sleeve outer ring 10 is in contact with the limiting plate 13. The motor shaft outer sleeve 09 is connected to the limiting ring 25. The side of the limiting ring 25 is in contact with the limiting plate 13. The two ends of the limiting plate 13 are in contact with the sleeve outer ring 10 and the limiting ring 25 distributed on the motor shaft outer sleeve 09, respectively, so that the movement of the limiting plate 13 drives the motor shaft outer sleeve 09 to slide horizontally.

[0019] Example 5: The limiting plate 13 of this utility model has limiting plate side plates 12 at both ends. The limiting plate side plates 12 are in contact with the annular storage tray 04. One end of the guide rod 17 is connected to the fastening instrument 01, and the other end of the guide rod 17 is connected to the annular storage tray 04. The guide rod 17 passes through the limiting plate side plates 12. A spring 18 is sleeved on the guide rod 17. One end of the spring 18 abuts against the fastening instrument 01, and the other end of the spring 18 abuts against the limiting plate side plates 12. The guide rod 17 is installed and fixed on the side of the annular storage tray 04, and the other end of the guide rod 17 is in contact with the fastening instrument 01. The spring 18 is sleeved on the guide rod 17. On the 7th, spring 18, supported by fastening instrument 01, applies a pushing force to the side plate 12 of the limiting plate, causing the limiting plate 13 to move the outer sleeve 09 of the motor shaft. This causes the outer sleeve 09 to push the bolt head ferrule 19 out of the annular storage tray 04, making the bolt head ferrule 19 usable for bolt tightening. This device can hold multiple bolt head ferrules 19 of different sizes within the annular storage tray 04. When tightening bolts of different sizes is required, the annular storage tray 04 can be rotated to insert the desired tray into the intermediate sleeve 07, which is then inserted and rotated by the telescopic shaft. The device can handle the tightening needs of different bolt specifications by switching the ferrules within the storage tray, eliminating the need for multiple sets of dedicated tightening equipment and reducing tool inventory costs. The telescopic shaft's structure allows for simultaneous transmission and ferrule ejection; spring 18 automatically pushes the outer sleeve to eject the ferrule, eliminating the need for manual ferrule position adjustment and simplifying the tightening operation.

[0020] Installation steps: First, pre-install multiple bolt head sleeves 19 inside the annular storage tray 04. Connect the motor shaft 08 to the fastening instrument 01. Insert the motor shaft 08 into the motor shaft outer sleeve 09. Insert the inner retaining strip 15 into the motor shaft side groove 16. Place the limiting plate 13 on the motor shaft outer sleeve 09. Pass the guide rod 17 through the limiting plate side plate 12 and connect it to the annular storage tray 04. Place the spring 18 on the guide rod 17. Connect the annular baffle 03 to the annular storage tray 04. Connect the other end of the annular baffle 03 to the fastening instrument 01.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A bolt fastening device for wind turbine units, characterized in that: The device includes a fastening instrument (01), an annular baffle (03), an annular storage tray (04), a motor shaft (08), a motor shaft outer sleeve (09), a limiting plate (13), a guide rod (17), a spring (18), and a bolt head sleeve (19). The fastening instrument (01) has an instrument handle (02) at its lower part. One end of the annular baffle (03) is connected to the fastening instrument (01), and the other end of the annular baffle (03) is connected to the annular storage tray (04). The annular storage tray (04) has a storage tray side plate (05) on its side. The bolt head sleeve (19) is adapted to the annular storage tray (04) and is placed inside the annular storage tray (04). The bolt head sleeve (19) rotates inside the annular storage tray (04). The bolt head sleeve (19) slides within the annular storage tray (04). Multiple bolt head sleeves (19) are distributed within the annular storage tray (04). The bolt head sleeve (19) has a sleeve side plate (20) on its side. The sleeve side plate (20) is adapted to the storage tray side plate (05). The sleeve side plate (20) is inserted into the storage tray side plate (05). The sleeve side plate (20) slides within the storage tray side plate (05). The annular storage tray (04) has an intermediate sleeve (07) inside. The bolt head sleeve (19) is inserted into the intermediate sleeve (07). The inner diameter of the intermediate sleeve (07) is the same as the outer diameter of the sleeve side plate (20). The sleeve side plate (20) rotates within the intermediate sleeve (07). The sleeve side plate (20) slides within the intermediate sleeve (07).

2. The wind turbine bolt fastening device according to claim 1, characterized in that: The ring-shaped storage tray (04) has a storage tray side opening (06) on its side. The middle sleeve (07) has a sleeve relief hole (24). The bolt head sleeve (19) is adapted to the sleeve relief hole (24). The bolt head sleeve (19) is inserted into the sleeve relief hole (24). The bolt head sleeve (19) has a hexagonal groove (21) on one side and a circular insertion hole (22) on the other side. The circular insertion hole (22) has an insertion hole side limiting groove (23) on its side. The motor shaft (08) is connected to the fastening instrument (01) side connector on its side.

3. A wind turbine bolt fastening device according to claim 2, characterized in that: The motor shaft (08) is adapted to the motor shaft outer sleeve (09). The motor shaft (08) is inserted into the motor shaft outer sleeve (09) and slides inside the motor shaft outer sleeve (09). The side of the motor shaft (08) has a motor shaft side groove (16). The inside of the motor shaft outer sleeve (09) has a sleeve inner retainer (15). The sleeve inner retainer (15) is adapted to the motor shaft side groove (16). The sleeve inner retainer (15) is inserted into the motor shaft side groove (16) and slides inside the motor shaft side groove (16).

4. A wind turbine bolt fastening device according to claim 3, characterized in that: The motor shaft outer sleeve (09) is adapted to the circular insertion hole (22). The motor shaft outer sleeve (09) is inserted into the circular insertion hole (22). The side of the motor shaft outer sleeve (09) has an outer sleeve retainer (14). The outer sleeve retainer (14) is adapted to the insertion hole side limiting groove (23). The outer sleeve retainer (14) is inserted into the insertion hole side limiting groove (23). The side of the annular storage tray (04) has a clearance hole (11). The motor shaft outer sleeve (09) is placed in the clearance hole (11). The outer side of the motor shaft outer sleeve (09) has an outer sleeve ring (10). The limiting plate (13) is sleeved on the motor shaft outer sleeve (09). The side of the outer sleeve ring (10) is in contact with the limiting plate (13). The motor shaft outer sleeve (09) is connected to the limiting ring (25). The side of the limiting ring (25) is in contact with the limiting plate (13).

5. A wind turbine bolt fastening device according to claim 3, characterized in that: The limiting plate (13) has limiting plate side plates (12) at both ends. The limiting plate side plates (12) are in contact with the annular storage tray (04). One end of the guide rod (17) is connected to the fastening instrument (01), and the other end of the guide rod (17) is connected to the annular storage tray (04). The guide rod (17) passes through the limiting plate side plate (12). The spring (18) is sleeved on the guide rod (17). One end of the spring (18) abuts against the fastening instrument (01), and the other end of the spring (18) abuts against the limiting plate side plate (12).

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