A kind of auxiliary tool for taking out broken bolt

Abstract

The utility model discloses a kind of auxiliary tool for broken bolt extraction, it is related to broken bolt extraction tool technical field, including sleeve assembly, the sleeve assembly has inner sleeve and outer sleeve;The inner sleeve part is located in the inner sleeve of outer sleeve and inner sleeve both ends extend to the outside of outer sleeve;Two groups of bearing distribution installation are on the inner sleeve located in the outside of outer sleeve;The clamping assembly part is located in the inner sleeve;The clamping assembly has clamping one part and clamping two parts;Form a containing space for clamping tap extension rod between clamping one part and clamping two parts;Clamping one part and clamping two parts form containing space reduction or increase in opposite or reverse direction operation;In the process of taking silk, the auxiliary tool can be used to fix tap extension rod, avoid axial displacement in the process of rotation, while clamping one part and clamping two parts are movable, can be clamped and fixed to different sizes tap extension rod, convenient and flexible to use, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tools for removing broken bolts, and in particular to an auxiliary tooling for removing broken bolts. Background Technology

[0002] In recent years, with the rapid development of wind turbines and the increasing installed capacity, many wind turbines have been in operation for many years. Due to the complex operating conditions of wind turbines, the phenomenon of blade fixing bolts breaking occurs from time to time, posing a great threat to the safe operation of wind turbines.

[0003] The wind turbine blades are fixed to the hub with a ring of bolts. These bolts can break due to mechanical stress or insufficient strength, damaging the equipment inside the hub. Furthermore, if many bolts break, the blades may detach. Therefore, it is necessary to remove the broken bolts. Typical bolts are about 30cm long with a bolt hole depth of about 25cm, and the remaining length of the broken bolt inside the hole is usually about 5cm. Therefore, the thread extractor and screwdriver bit extension rod must be at least 20cm long. However, using a screwdriver bit extension rod can cause axial wobbling due to the excessive length of the thread extractor, making it difficult to remove the broken bolt and potentially damaging the thread extractor. Additionally, different wind turbine models have different bolt hole diameters, requiring different screwdriver bit extension rods for removal, further complicating the process.

[0004] Therefore, there is an urgent need to design an auxiliary tool for removing broken bolts. During the bolt removal process, it can assist in fixing the bit extension rod to prevent axial displacement during rotation. At the same time, it can match bit extension rods of different sizes to be used for different types of bolts. It is flexible in use, reduces labor intensity, and improves work efficiency, thereby overcoming the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary tooling for removing broken bolts that avoids axial displacement during rotation, can be matched with extension rods of different sizes of bits to remove bolts of different models, is flexible in use, reduces labor intensity, and improves work efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An auxiliary tooling for removing a broken bolt includes: A sleeve assembly having an inner sleeve and an outer sleeve; The inner sleeve portion is located inside the outer sleeve and both ends of the inner sleeve extend to the outside of the outer sleeve; The bearings, the two sets of bearings are distributed and mounted on the inner sleeve located outside the outer sleeve; A clamping assembly, wherein a portion of the clamping assembly is located inside the inner sleeve; The clamping assembly has a clamping part and a clamping part; A receiving space for clamping the bit extension rod is formed between the clamping part one and the clamping part two; The clamping parts one and two operate in opposite directions to reduce or increase the accommodating space.

[0007] Furthermore, the clamping assembly includes: The lead screw has its two ends movably connected to the inner sleeve; A turntable, which is fixedly mounted on a lead screw; The clamping part one and the clamping part two are respectively connected to the lead screw; The clamping part one and the clamping part two have connecting rods; One end of the connecting rod is formed with a nut that is threadedly connected to the lead screw. The two sets of ferrules rotate in opposite directions and are distributed on both sides of the turntable; The turntable drives the lead screw to rotate synchronously, forming two sets of lead nuts that move in opposite directions along the lead screw to achieve the clamping of part one and part two moving closer or further apart.

[0008] Furthermore, a clamping block is connected to the other end of the connecting rod; The bit extension rod passes between clamping part one and clamping part two and is clamped and fixed by two sets of clamping blocks.

[0009] Furthermore, the turntable extends into the gap between the inner sleeve and the outer sleeve; The outer sleeve has a slot corresponding to the position of the turntable; The hand passes through the slot to rotate the turntable and adjust the size of the receiving space to clamp bit extension rods of different sizes.

[0010] Furthermore, a rubber suction cup is installed on the outer periphery of the bearing port; The sleeve assembly and bearing are attached to the iron wall outside the wire-taking port by a rubber suction cup.

[0011] Furthermore, the end of the connecting rod away from the nut has an external thread; The clamping block has a through hole with internal threads inside; The connecting rod is screwed into the through hole of the clamping block.

[0012] In the above technical solution, the auxiliary tooling for removing broken bolts of this utility model has the following beneficial effects: During the wire extraction process, this auxiliary tool can fix the bit extension rod, preventing axial displacement during rotation. At the same time, the clamping parts one and two are movable, which can clamp and fix bit extension rods of different sizes. It is convenient and flexible to use, improving work efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the structure of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 2 A schematic diagram of the structure of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 3 A schematic diagram of the structure of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 4 A schematic diagram of the structure of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 5 A schematic diagram of the structure of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 6 A partial structural schematic diagram of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 7 A partial structural schematic diagram of an auxiliary tooling for removing a broken bolt provided in an embodiment of this utility model; Figure 8 This is a partial structural diagram of an auxiliary tooling for removing a broken bolt, provided for an embodiment of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Sleeve assembly; 2. Bearing; 3. Clamping assembly; 4. Rubber suction cup; 11. Inner sleeve; 12. Outer sleeve; 31. Clamping part 1; 32. Clamping part 2; 33. Lead screw; 34. Turntable; 35. Connecting rod; 36. Lead nut; 37. Clamping block; 121. Groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] It should be noted that the terms "external", "internal", "one end", "the other end", "outer periphery", "both ends", etc. used in this document indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of illustrative purposes and are not intended to 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. In addition, the terms "one part", "two parts", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] See Figures 1-8 As shown; An auxiliary tooling for removing a broken bolt includes: The assembly comprises a sleeve assembly 1, a bearing 2, a clamping assembly 3, and a rubber suction cup 4. The sleeve assembly 1 has an inner sleeve 11 and an outer sleeve 12. The outer sleeve 12 is fitted over the inner sleeve 11, with a gap between them. Both ends of the inner sleeve 11 extend outside the outer sleeve 12. The bearing 2 is mounted on the extended portions of the inner sleeve 11. The inner sleeve 11 acts as a rotating shaft in conjunction with the bearing 2. The clamping assembly 3 is installed inside the inner sleeve 11 and is used to clamp the bit extension rod. The middle portion of the bit extension rod... The screwdriver bit extension rod passes through the inner sleeve 11 and is clamped by the clamping assembly 3. The two ends of the extension rod are connected to the reverse wire extractor and the electric drill, respectively. The broken bolt is removed by the driving force of the electric drill, the transmission of the extension rod, and finally the reverse wire extractor. When the electric drill drives the extension rod to rotate, the clamping assembly 3 clamps the extension rod in place. The clamping assembly 3 is also installed on the inner sleeve 11. When the extension rod rotates, it will drive the clamping assembly 3 and the inner sleeve 11 to rotate between the two sets of bearings 2. That is, the inner sleeve 11 as a whole is equivalent to a rotating shaft. Specifically, the clamping assembly 3 includes a clamping part 31, a clamping part 32, a lead screw 33, a turntable 34, a connecting rod 35, a lead screw nut 36, and a clamping block 37. The two ends of the lead screw 33 are rotatably connected to the inner wall of the inner sleeve 11. The clamping part 31 and the clamping part 32 are mounted on the lead screw 33. The clamping part 31 and the clamping part 32 have identical structures, both consisting of a connecting rod 35, a lead screw nut 36, and a clamping block 37. The connecting rod 35 and the lead screw nut 36 are a single piece, with the lead screw nut 36 sleeved on the lead screw 33. The lead screw nuts of the clamping part 31 and the clamping part 32 have different directions of rotation. When the lead screw 33 rotates... Two sets of screw nuts 36 move in opposite directions along the screw 33. The bottom of the connecting rod 35 is connected to the clamping block 37. The space between the two sets of clamping blocks 37 is the accommodating space for clamping the bit extension rod. A turntable 34 is also installed on the screw 33. The turntable 34 is fixed at the center of the screw 33. When the turntable 34 is rotated, the screw 33 will rotate. By rotating the turntable 34, the rotation direction of the screw 33 is controlled, thereby adjusting the distance between the clamping part 31 and the clamping part 32, that is, adjusting the distance between the two sets of clamping blocks 37. The two sets of clamping blocks 37 move closer or further away from each other to clamp bit extension rods of different sizes. The inner sleeve 11 has a slot, and the turntable 34 extends to the outside of the inner sleeve 11 through the slot. At the same time, the outer sleeve 12 has a slot 121, which corresponds to the turntable 34. When in use, the hand reaches into the turntable 34 from the slot 121 and rotates the turntable 34. The outer sleeve 12 covers the outside of the turntable 34, which can prevent accidental contact. Furthermore, the lower end of the connecting rod 35 has an external thread, and the clamping block 37 has a threaded through hole. The clamping block 37 and the connecting rod 35 are installed by screwing on the thread. The clamping block 37 is detachable and replaceable, and can be used with different types of bit extension rods. Preferably, a rubber suction cup 4 is installed on the outer periphery of the bearing 2 port. During use, the device can be adsorbed onto the iron wall outside the wire take-up port using the rubber suction cup 4, so as to prevent the auxiliary tooling from shaking and falling off during use, which would affect the operation process.

[0019] The specific implementation method is as follows: Place the auxiliary tool vertically so that the rubber suction cup 4 is attached to the iron wall outside the wire extraction port. Then insert the bit extension rod along the inner sleeve 11 and connect it to the reverse wire extractor. At this time, the two sets of clamping blocks 37 are located outside the bit extension rod. Rotate the turntable 34 to rotate the screw 33. The two sets of screw nuts 36 move along the screw 33 to move the clamping blocks 37 closer to the bit extension rod and gradually clamp them. Then connect the electric drill to the bit extension rod for operation. After the operation is completed, rotate the turntable 34 in the opposite direction to move the two sets of clamping blocks 37 away from the bit extension rod. Then remove the bit extension rod.

[0020] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An auxiliary tooling for removing a broken bolt, characterized in that, include: Sleeve assembly (1), the sleeve assembly (1) having an inner sleeve (11) and an outer sleeve (12); The inner sleeve (11) is located inside the outer sleeve (12) and both ends of the inner sleeve (11) extend to the outside of the outer sleeve (12); Bearing (2), two sets of bearings (2) are distributed and installed on the inner sleeve (11) located outside the outer sleeve (12); Clamping assembly (3), the clamping assembly (3) is partially located inside the inner sleeve (11); The clamping assembly (3) has a clamping part (31) and a clamping part (32). A receiving space for clamping the bit extension rod is formed between the clamping part (31) and the clamping part (32); The clamping part (31) and clamping part (32) move in opposite directions or in reverse to reduce or increase the accommodating space.

2. The auxiliary tooling for removing a broken bolt according to claim 1, characterized in that, The clamping assembly (3) includes: A lead screw (33) is movably connected at both ends to an inner sleeve (11); A turntable (34) is fixedly mounted on a lead screw (33); The clamping part (31) and the clamping part (32) are respectively connected to the lead screw (33); The clamping part (31) and the clamping part (32) have a connecting rod (35); One end of the connecting rod (35) is formed with a nut (36) that is threadedly connected to the lead screw (33). The two sets of the silk nuts (36) rotate in opposite directions and are distributed on both sides of the turntable (34); The turntable (34) drives the lead screw (33) to rotate synchronously, forming two sets of lead nuts (36) that move in opposite directions along the lead screw (33) to achieve the clamping part (31) and the clamping part (32) moving closer or further apart.

3. The auxiliary tooling for removing a broken bolt according to claim 2, characterized in that: The other end of the connecting rod (35) is connected to a clamp (37); The bit extension rod passes between clamping part one (31) and clamping part two (32) and is clamped and fixed by two sets of clamping blocks (37).

4. The auxiliary tooling for removing a broken bolt according to claim 2, characterized in that: The turntable (34) extends into the gap between the inner sleeve (11) and the outer sleeve (12); The outer sleeve (12) has a slot (121) corresponding to the position of the turntable (34); Hands pass through the slot (121) to rotate the turntable (34) and adjust the size of the receiving space to clamp bit extension rods of different sizes.

5. The auxiliary tooling for removing a broken bolt according to claim 1, characterized in that: A rubber suction cup (4) is installed on the outer periphery of the bearing (2). The sleeve assembly (1) and bearing (2) are attached to the iron wall outside the wire take-up port by the rubber suction cup (4).

6. The auxiliary tooling for removing a broken bolt according to claim 3, characterized in that: The end of the connecting rod (35) away from the nut (36) has an external thread; The clamping block (37) has a through hole with internal threads inside; The connecting rod (35) is screwed into the through hole of the clamp (37).

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