A multi-head drilling tool for longitudinal flange and gasket

Abstract

The utility model discloses a kind of multi-head drilling tool of piece type longitudinal flange and cushion block, comprising: positioning jig, positioning groove is set on it, longitudinal flange, cushion block is inserted in positioning groove, the side surface of positioning jig is set through and corresponds with the through hole of the assembly hole of longitudinal flange and cushion block;Positioning cover plate is set at the opening of positioning groove and is attached on the outside of longitudinal flange and cushion block, it can be detachably assembled on positioning jig, a plurality of limiting ribs are set on positioning cover plate with interval, limiting rib is embedded in the first recess of the outside of longitudinal flange and cushion block;Drilling mechanism, it includes base plate, drill, oil cylinder, servo motor, a plurality of drill rotary connection base plate, oil cylinder drives base plate to move towards or away from positioning jig, servo motor on base plate drives drill to rotate.The utility model can solve the problem of low drilling efficiency and poor hole structure forming quality when the existing longitudinal flange and cushion block drilling tool for wind power tower drum is used.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine tower technology, specifically a multi-head drilling tool for a segmented longitudinal flange and gasket. Background Technology

[0002] Wind turbine towers are a crucial component of wind power generation facilities. The operating environments they operate in place place high demands on the structural integrity and wind impact resistance of their internal components. Currently, some wind turbine tower internal components are joined using longitudinal flanges on the sides, with spacers placed between the flanges to form a segmented structure. These components are then assembled and secured using bolts through mounting holes. However, the mounting holes on the longitudinal flanges and spacers are typically drilled independently, resulting in low processing efficiency, poor workpiece positioning stability of the drilling fixtures, and potential workpiece displacement during drilling, leading to poor hole quality. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-head drilling tool for segmented longitudinal flanges and gaskets to solve the problems of low drilling efficiency and poor hole structure forming quality when using existing drilling tools for longitudinal flanges and gaskets in wind turbine towers.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a multi-head drilling fixture for a segmented longitudinal flange and gasket, comprising:

[0005] A positioning fixture is provided with a positioning groove, and a longitudinal flange and a gasket are inserted into the positioning groove. The side of the positioning fixture is provided with through holes corresponding to the assembly holes of the longitudinal flange and the gasket.

[0006] A positioning cover plate is provided at the opening of the positioning groove and pressed onto the outside of the longitudinal flange and the gasket. It is detachably assembled on the positioning fixture. A number of limiting ribs are provided at intervals on the positioning cover plate. The limiting ribs are embedded in the first recess on the outside of the longitudinal flange and the gasket.

[0007] A drilling mechanism includes a base plate, drill bits, hydraulic cylinders, and servo motors. Several drill bits are rotatably connected to the base plate. The hydraulic cylinders drive the base plate to move toward or away from the positioning fixture. The servo motors on the base plate drive the drill bits to rotate.

[0008] As a further description of the above technical solution:

[0009] The positioning fixture is provided with a waste box on the other side of the drilling mechanism, and the waste box is provided with a collection groove.

[0010] As a further description of the above technical solution:

[0011] A protrusion is provided at the end of the positioning groove, and the protrusion is embedded in the gap between the longitudinal flange and the end of the gasket.

[0012] As a further description of the above technical solution:

[0013] A lifting plate is slidably installed at the bottom of the positioning groove, and a lifting block on the side of the lifting plate extends from the notch on the side of the positioning groove to the outside of the positioning fixture.

[0014] As a further description of the above technical solution:

[0015] The positioning fixture is provided with a second notch corresponding to the limiting rib.

[0016] As a further description of the above technical solution:

[0017] A hinge seat is provided on one side of the positioning fixture, and a guide groove is provided on the hinge seat. One end of the limiting rib is movably disposed in the guide groove, and the ball shaft at one end is rotatably embedded in the spherical groove on the surface of the guide groove.

[0018] As a further description of the above technical solution:

[0019] A buckle is provided at the opposite end of the limiting rib, and the buckle is engaged with the engagement protrusion of the positioning fixture.

[0020] As a further description of the above technical solution:

[0021] The substrate slides onto several guide rails at its bottom.

[0022] As a further description of the above technical solution:

[0023] One servo motor is provided, with its output end connected to the drill bit. A transmission wheel is provided on the drill bit, and a synchronous belt is sleeved on the transmission wheel of the adjacent drill bit.

[0024] In summary, by adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0025] This utility model's drilling fixture is used for drilling segmented longitudinal flanges and gaskets at the connection points of internal components in wind turbine towers, enabling the formation of assembly holes. In use, the longitudinal flanges and gaskets are alternately placed into the positioning grooves for initial positioning. Then, a positioning cover plate is assembled onto the positioning fixture, abutting against the outer surfaces of the longitudinal flanges and gaskets. A limiting rib engages with the first recess for secondary positioning. This multi-step positioning structure design allows for multi-step workpiece positioning, reducing positioning difficulty and improving positioning strength. During drilling, a hydraulic cylinder pushes the base plate closer to the positioning fixture, while a servo motor drives the drill bit to rotate. The drill bit passes through the through hole and drills into the longitudinal flange and gasket. After completion, the structure resets, and the workpiece can be removed. This improves the quality and processing efficiency of simultaneous drilling of multiple longitudinal flanges and gaskets. The workpiece loading, positioning, and unloading operations are efficient and convenient, and the high synchronization of drill bit rotation enables high-quality simultaneous drilling of multiple assembly holes. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a structural schematic diagram of a multi-head drilling tool for a segmented longitudinal flange and gasket.

[0028] Figure 2 This is a partial structural diagram of a positioning fixture in a multi-head drilling tooling for a segmented longitudinal flange and gasket.

[0029] Figure 3 This is a cross-sectional view of a positioning fixture in a multi-head drilling tooling for a segmented longitudinal flange and gasket.

[0030] Figure 4 This is a sectional view of the connection structure of the limiting rib and hinge seat in a multi-head drilling tool for a segmented longitudinal flange and gasket.

[0031] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. Positioning fixture; 2. Positioning groove; 3. Through hole; 4. Positioning cover plate; 5. Limiting rib; 6. Base plate; 7. Drill bit; 8. Hydraulic cylinder; 9. Servo motor; 10. Scrap box; 11. Collection trough; 12. Protrusion; 13. Lifting plate; 14. Lifting block; 15. Notch; 16. Second recess; 17. Hinge seat; 18. Guide groove; 19. Ball shaft; 20. Spherical groove; 21. Buckle; 22. Snap-fit ​​protrusion; 23. Guide rail; 24. Drive wheel; 25. Synchronous belt; 100. Longitudinal flange; 110. Assembly hole; 120. First recess; 200. Pad block. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Example 1:

[0037] Please see Figure 1-5 This utility model provides a technical solution: a multi-head drilling fixture for a segmented longitudinal flange and gasket, comprising:

[0038] A positioning fixture 1 is provided with a positioning groove 2. A longitudinal flange 100 and a gasket 200 are inserted into the positioning groove 2. A through hole 3 corresponding to the assembly hole 110 of the longitudinal flange 100 and the gasket 200 is provided through the side of the positioning fixture 1.

[0039] A positioning cover plate 4 is provided at the opening of the positioning groove 2 and pressed against the outside of the longitudinal flange 100 and the pad 200. It is detachably assembled on the positioning fixture 1. A number of limiting ribs 5 are provided at intervals on the positioning cover plate 4. The limiting ribs 5 are embedded in the first recess 120 on the outside of the longitudinal flange 100 and the pad 200.

[0040] The drilling mechanism includes a base plate 6, drill bits 7, hydraulic cylinders 8, and servo motors 9. Several drill bits 7 are rotatably connected to the base plate 6. The hydraulic cylinders 8 drive the base plate 6 to move toward or away from the positioning fixture 1. The servo motors 9 on the base plate 6 drive the drill bits 7 to rotate.

[0041] A protrusion 12 is provided at the end of the positioning groove 2, and the protrusion 12 is embedded in the gap between the ends of the longitudinal flange 100 and the pad 200. This improves the positioning strength between the positioning fixture 1 and the longitudinal flange 100 and the pad 200, so as to avoid workpiece displacement during drilling operations and thus prevent a decrease in drilling quality.

[0042] The substrate 6 slides onto several guide rails 23 at its bottom to improve the stability of the substrate 6 and the accuracy of the drilling operation of the drill bit 7 when drilling into or out of the longitudinal flange 100 and the pad 200.

[0043] The working principle of the multi-head drilling fixture for segmented longitudinal flanges and gaskets in this embodiment includes: This drilling fixture is used for drilling segmented longitudinal flanges and gaskets at the connection of internal components of wind turbine towers, so that the mounting holes 110 are formed. In use, the longitudinal flanges and gaskets are alternately placed into the positioning grooves 2 to complete the initial positioning. Then, the positioning cover plate 4 is assembled on the positioning fixture 1 so that it abuts against the outer side of the longitudinal flanges and gaskets. The limiting rib 5 is inserted into the first recess 120 to achieve secondary limiting. Through the above-mentioned multi-positioning structure design, the workpiece is positioned in multiple steps, reducing the positioning difficulty and improving the positioning strength. During drilling, the hydraulic cylinder 8 pushes the base plate 6 to gradually approach the positioning fixture 1, and the servo motor 9 drives the drill bit 7 to rotate. The drill bit 7 passes through the through hole 3 and drills into the longitudinal flange and gasket. After completion, the structure is reset, and the workpiece can be taken out. This improves the quality and processing efficiency of synchronous drilling of multiple longitudinal flanges and gaskets.

[0044] Example 2:

[0045] Please see Figure 1 The figure shows a multi-head drilling fixture for a segmented longitudinal flange and gasket provided in Embodiment 2 of this utility model. Based on the above embodiments, this embodiment further improves upon the following technical solution: a waste box 10 is provided on the other side of the positioning fixture 1 opposite to the drilling mechanism, and a collection trough 11 is provided on the waste box 10 so that the drilling waste discharged from the through hole 3 during drilling can be directly poured into the collection trough 11 for recycling.

[0046] Example 3:

[0047] Please see Figure 1-3The figure shows a multi-head drilling fixture for a segmented longitudinal flange and gasket provided in Embodiment 3 of this utility model. Based on the above embodiments, this embodiment further improves upon the following technical solutions: a lifting plate 13 is slidably mounted at the bottom of the positioning groove 2, and a lifting block 14 on the side of the lifting plate 13 extends from a notch 15 on the side of the positioning groove 2 to the outside of the positioning fixture 1. This allows the workpiece to be removed after drilling simply by pushing the lifting block 14 upwards, which moves the lifting plate 13 upwards and pushes the workpiece out of the positioning groove 2 for removal. Furthermore, an elastic element is provided between the positioning groove 2 and the lifting plate 13 to automatically lift the workpiece after the positioning cover plate 4 is disengaged from the positioning fixture 1, improving unloading efficiency.

[0048] Example 4:

[0049] Please see Figure 1 , 4 Figure 5 shows a multi-head drilling fixture for a segmented longitudinal flange and gasket provided in Embodiment 4 of this utility model. Based on the above embodiments, this embodiment further improves the following technical solution: the positioning fixture 1 is provided with a second recess 16 corresponding to the limiting rib 5, so as to improve the positioning strength of the positioning cover plate 4 and the positioning fixture 1, thereby improving the positioning stability of the workpiece.

[0050] A hinge seat 17 is provided on one side of the positioning fixture 1, and a guide groove 18 is provided on the hinge seat 17. One end of the limiting rib 5 is movably disposed in the guide groove 18, and the ball shaft 19 at one end is rotatably embedded in the spherical groove 20 on the surface of the guide groove 18.

[0051] A buckle 21 is provided at the opposite end of the limiting rib 5, and the buckle 21 is engaged with the engaging protrusion 22 of the positioning fixture 1.

[0052] In this embodiment, the positioning cover plate 4 is assembled with the positioning fixture 1 by means of a limiting rib 5, which is hinged on one side and snapped on the other. During use, the positioning cover plate 4 is pushed, causing the limiting rib 5 to flip from the outside of the guide groove 18 to the inside. The ball shaft 19 rotates along the spherical groove 20, allowing the positioning cover plate 4, the limiting rib 5, and the workpiece to be positioned. Then, the buckle 21 is snapped into place with the snap-fit ​​protrusion 22, thus completing the workpiece positioning. When drilling is complete or the workpiece is being unloaded, the buckle 21 and snap-fit ​​protrusion 22 are unlocked, and the positioning cover plate 4 is flipped outwards to remove the workpiece. This makes the workpiece loading, positioning, and unloading operations more convenient.

[0053] Example 5:

[0054] Please see Figure 1The figure shows a multi-head drilling fixture for a segmented longitudinal flange and gasket provided in Embodiment 5 of this utility model. Based on the above embodiments, this embodiment further improves upon the following technical solution: A single servo motor 9 is provided, with its output end connected to the drill bit 7. A transmission wheel 24 is provided on the drill bit 7, and a synchronous belt 25 is sleeved on the transmission wheel 24 of the adjacent drill bit 7. This enables a single servo motor 9 to drive the rotation of multiple drill bits 7, improving the synchronicity of the rotation of multiple drill bits 7, ensuring the stability and drilling quality of multi-hole synchronous drilling, and reducing the cost of the drive equipment.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-head drilling fixture for a segmented longitudinal flange and gasket, characterized in that, include: A positioning fixture is provided with a positioning groove, and a longitudinal flange and a gasket are inserted into the positioning groove. The side of the positioning fixture is provided with through holes corresponding to the assembly holes of the longitudinal flange and the gasket. A positioning cover plate is provided at the opening of the positioning groove and pressed onto the outside of the longitudinal flange and the gasket. It is detachably assembled on the positioning fixture. A number of limiting ribs are provided at intervals on the positioning cover plate. The limiting ribs are embedded in the first recess on the outside of the longitudinal flange and the gasket. A drilling mechanism includes a base plate, drill bits, hydraulic cylinders, and servo motors. Several drill bits are rotatably connected to the base plate. The hydraulic cylinders drive the base plate to move toward or away from the positioning fixture. The servo motors on the base plate drive the drill bits to rotate.

2. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, The positioning fixture is provided with a waste box on the other side of the drilling mechanism, and the waste box is provided with a collection groove.

3. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, A protrusion is provided at the end of the positioning groove, and the protrusion is embedded in the gap between the longitudinal flange and the end of the gasket.

4. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, A lifting plate is slidably installed at the bottom of the positioning groove, and a lifting block on the side of the lifting plate extends from the notch on the side of the positioning groove to the outside of the positioning fixture.

5. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, The positioning fixture is provided with a second notch corresponding to the limiting rib.

6. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, A hinge seat is provided on one side of the positioning fixture, and a guide groove is provided on the hinge seat. One end of the limiting rib is movably disposed in the guide groove, and the ball shaft at one end is rotatably embedded in the spherical groove on the surface of the guide groove.

7. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, A buckle is provided at the opposite end of the limiting rib, and the buckle is engaged with the engagement protrusion of the positioning fixture.

8. The multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, The substrate slides onto several guide rails at its bottom.

9. A multi-head drilling fixture for a segmented longitudinal flange and gasket according to claim 1, characterized in that, One servo motor is provided, with its output end connected to the drill bit. A transmission wheel is provided on the drill bit, and a synchronous belt is sleeved on the transmission wheel of the adjacent drill bit.

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