Self-tightening bolt for wind power equipment

Abstract

The utility model discloses a self-tightening bolt for wind power equipment, which belongs to the technical field of self-tightening bolts and comprises a bolt body, a mounting cavity is arranged on the top surface of the bolt body, a moving groove communicated with the mounting cavity is arranged on the outer circular surface of the bolt in a penetrating manner, and a threaded rod is arranged in the mounting cavity. A connecting piece for controlling the threaded rod to rotate is arranged on the top face of the bolt body, the bolt body is sleeved with a nut in a threaded mode, a fixing piece abutting against the end face of the nut is arranged in the mounting cavity, the bottom end of the threaded rod is far away from the mounting cavity through the connecting piece, then the fixing piece is placed in the mounting cavity along the moving groove, and the threaded rod is rotated again. And then, the connecting piece and the threaded rod rotate together, the connected fixing piece moves upwards along the threaded rod, the fixing piece abuts against the end face of the nut, fixing of the nut is achieved, and the stability of connection between the threaded body and the nut is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of self-tightening bolts, and in particular relates to a self-tightening bolt used for wind power equipment. Background Art

[0002] The installation of many equipment requires the use of bolt connections. Bolts are fasteners commonly used to fasten two or more parts or components into a whole. They consist of a head and a screw (a cylinder with external threads). Bolts usually need to be fixed with nuts during use, and bolts are easy to disassemble and have high connection strength.

[0003] When existing bolts are used to connect mechanical equipment, the mechanical equipment may vibrate during use. Due to the vibration of the mechanical equipment, the connected bolts and nuts may become loose or fall off, affecting the normal use of the equipment and increasing safety hazards in use.

[0004] To this end, we propose a self-tightening bolt for wind power equipment to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem of loosening of bolts and nuts in the prior art and proposes a self-tightening bolt for wind power equipment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A self-tightening bolt for wind power equipment comprises a bolt body, a mounting cavity is formed on the top surface of the bolt body, a movable groove communicating with the mounting cavity is formed on the outer circumferential surface of the bolt, a threaded rod is formed in the mounting cavity, a connecting piece for controlling the rotation of the threaded rod is formed on the top surface of the bolt body, a nut is threadedly sleeved on the bolt body, a fixing piece abutting against the end surface of the nut is formed in the mounting cavity, the fixing piece is threadedly sleeved on the threaded rod, and a rotating ring is fixedly connected to the top of the threaded rod.

[0008] Preferably, the connecting member comprises a threaded sleeve rotatably mounted on the top surface of the bolt body, the threaded rod is threadedly sleeved in the threaded sleeve, and a pin for limiting the threaded sleeve is provided on one side of the threaded sleeve.

[0009] Preferably, the pin member comprises a fixing pin which passes through the threaded sleeve and is inserted into the bolt body, and the top surface of the bolt body is provided with an indicating block which is coaxial with the fixing pin.

[0010] Preferably, the fixing member comprises a connecting sleeve threadedly sleeved on the threaded rod, and both sides of the connecting sleeve are fixedly connected with stoppers extending out of the movable groove, and the stoppers on both sides abut against one end of the nut.

[0011] Preferably, the outer diameter of the connecting sleeve is smaller than the inner diameter of the mounting cavity, and the thickness of the threaded sleeve and the stopper is matched with the thickness of the movable groove.

[0012] Preferably, the corners of the connecting sleeve and the stopper are both arc-shaped chamfers.

[0013] Preferably, a positioning shaft is fixedly connected to the bottom of the threaded rod, and a positioning hole matched with the positioning shaft is formed at the bottom of the installation cavity.

[0014] To sum up, the technical effects and advantages of the utility model are as follows: by setting a bolt body, a threaded rod, a connecting piece, a nut and a fixing piece, the equipment is fixed by the bolt body and the nut, and then the threaded rod is rotated, and the bottom end of the threaded rod is moved away from the installation cavity by the connecting piece, and then the fixing piece is placed in the installation cavity along the movable groove, and the threaded rod is rotated again so that the threaded rod is threadedly sleeved on the fixing piece, and then the connecting piece and the threaded rod are rotated together, and the connected fixing piece is moved upward along the threaded rod so that the fixing piece and the end face of the nut are abutted, thereby fixing the nut, improving the stability of the connection between the threaded body and the nut, and reducing the possibility of loosening of the bolt body and the nut; by setting a fixing pin, the connecting piece and the bolt body are fixed, and the self-rotation of the threaded rod and the common rotation of the threaded rod and the connecting piece are realized, and at the same time, the adjustment of the threaded rod to different required states is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a self-tightening bolt structure for wind power equipment;

[0016] Figure 2 A cross-sectional view of a self-tightening bolt used in wind power equipment;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 4 The figure is a schematic diagram of the structure of a fixing part in a self-tightening bolt used in wind power equipment.

[0019] In the figure: 1. bolt body; 2. nut; 3. threaded sleeve; 4. threaded rod; 5. rotating ring; 6. moving groove; 7. stopper; 8. fixing pin; 9. indicator block; 10. installation cavity; 11. connecting sleeve; 12. positioning shaft; 13. positioning hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1-Figure 2 A self-tightening bolt for wind power equipment includes a bolt body 1, a mounting cavity 10 is provided on the top surface of the bolt body 1, a moving groove 6 communicating with the mounting cavity 10 is provided on the outer circumferential surface of the through bolt, a threaded rod 4 is provided in the mounting cavity 10, a connecting piece for controlling the rotation of the threaded rod 4 is provided on the top surface of the bolt body 1, a nut 2 is connected to a threaded sleeve 3 of the bolt body 1, a fixing piece abutting against the end surface of the nut 2 is provided in the mounting cavity 10, the fixing piece threaded sleeve 3 is connected to the threaded rod 4, a rotating ring 5 is fixedly connected to the top of the threaded rod 4, and the rotation of the rotating ring 5 drives the screw rod 4 to rotate. The threaded rod 4 rotates synchronously, and the device is fixed by the bolt body 1 and the nut 2, and then the threaded rod 4 is rotated, and the bottom end of the threaded rod 4 is moved away from the installation cavity 10 through the connecting piece, and then the fixing piece is placed in the installation cavity 10 along the movable groove 6, and the threaded rod 4 is rotated again, so that the threaded sleeve 3 of the threaded rod 4 is connected to the fixing piece, and then the connecting piece and the threaded rod 4 rotate together, and the connected fixing piece is moved upward along the threaded rod 4, so that the fixing piece and the end face of the nut 2 are abutted, thereby fixing the nut 2 and improving the stability of the connection between the threaded body and the nut 2.

[0023] Reference Figure 1-Figure 2 The connecting piece includes a threaded sleeve 3 rotatably mounted on the top surface of the bolt body 1, a threaded rod 4, a threaded sleeve 3 connected to the threaded sleeve 3, an outer wall of the threaded sleeve 3 is rotatably connected to the bolt body 1, and an inner wall threaded sleeve 3 is connected to the threaded rod 4. A pin is provided on one side of the threaded sleeve 3 to limit the threaded sleeve 3. Before installing the fixing piece, the threaded sleeve 3 is fixed to the threaded body by the pin so that the threaded sleeve 3 does not rotate synchronously with the threaded rod 4. The threaded rod 4 rotates automatically so that the threaded sleeve 3 is screwed out of the installation cavity 10 of the threaded rod 4, and the threaded sleeve 3 is screwed out at the same time, so that the distance between the bottom of the threaded rod 4 and the inner bottom wall of the installation cavity 10 is enough to put the fixing piece in. Then, when the fixing piece is put in, the threaded rod 4 is screwed into the installation cavity 10 again, so that the threaded sleeve 3 of the fixing piece is connected to the threaded rod 4, and then the pin is removed. By rotating the threaded rod 4, the threaded sleeve 3 and the threaded rod 4 rotate together at this time, so that the fixing piece moves upward along the moving groove 6 and abuts against the end face of the nut 2.

[0024] Reference Figure 1-Figure 2 The pin member includes a fixing pin 8 that passes through the threaded sleeve 3 and is inserted into the bolt body 1. The top surface of the bolt body 1 is provided with an indicating block 9 that is coaxial with the fixing pin 8. By rotating the threaded rod 4 to align the hole on the threaded sleeve 3 with the indicating block 9, the fixing pin 8 can be inserted conveniently, thereby achieving the fixation of the threaded sleeve 3.

[0025] Reference Figure 4The fixing part includes a connecting sleeve 11 connected to the threaded sleeve 3 on the threaded rod 4. The inner wall of the connecting sleeve 11 is a threaded surface and the outer wall is an arc surface. Both sides of the connecting sleeve 11 are fixedly connected with blocks 7 extending from the movable groove 6. The blocks 7 on both sides are against one end of the nut 2. The connecting sleeve 11 and the block 7 are first vertically inserted into the movable groove 6. After the connecting sleeve 11 completely enters the installation cavity 10, the block 7 is rotated to place the connecting sleeve 11 horizontally, and one end face of the connecting sleeve 11 is in contact with the inner wall of the installation cavity 10. Then, the connecting sleeve 11 is threadedly connected through the threaded rod 4. As the threaded rod 4 rotates, the connecting sleeve 11 and the block 7 move up and against one end of the nut 2. At the same time, the rotation direction of the threaded sleeve 3 is opposite to that of the nut 2, thereby improving the stability of the threaded connection.

[0026] Reference Figure 1-Figure 2 The outer diameter of the connecting sleeve 11 is smaller than the inner diameter of the installation cavity 10, which facilitates the turning of the connecting sleeve 11 in the installation cavity 10. The thickness of the threaded sleeve 3 and the stopper 7 is adapted to the thickness of the movable groove 6, which facilitates the insertion of the threaded sleeve 3 and the stopper 7 along the movable groove 6.

[0027] Referring to the figures, the corners of the connecting sleeve 11 and the stopper 7 are both arc-shaped chamfers, which facilitates the smooth rotation of the threaded sleeve 3 and the stopper 7.

[0028] Reference Figure 3 A positioning shaft 12 is fixedly connected to the bottom of the threaded rod 4, and a positioning hole 13 adapted to the positioning shaft 12 is opened at the bottom of the installation cavity 10. When the connecting sleeve 11 is installed into the installation cavity 10, the threaded rod 4 descends, and the positioning shaft 12 will first pass through the connecting sleeve 11. As the threaded rod 4 moves, the connecting sleeve 11 is more easily connected to the threaded rod 4. At the same time, the positioning shaft 12 is connected to the positioning block, which improves the coaxiality of the threaded rod 4 with the installation cavity 10 when it rotates.

[0029] Working principle:

[0030] First, the equipment is fixed by the bolt body 1 and the nut 2, and the threaded sleeve 3 is fixed to the threaded body by the fixing pin 8. At the same time, since the threaded sleeve 3 does not rotate synchronously with the threaded rod 4, the self-rotation of the threaded rod 4 causes the threaded rod 4 to be screwed out of the installation cavity 10, and the threaded sleeve 3 is screwed out at the same time, so that the distance between the bottom of the threaded rod 4 and the bottom wall of the installation cavity 10 is enough to insert the connecting sleeve 11. First, the connecting sleeve 11 is vertically inserted into the installation cavity 10 along the movable groove 6. After the connecting sleeve 11 completely enters the installation cavity 10, the stopper 7 is rotated to place the connecting sleeve 11 horizontally. The threaded rod 4 is threadedly connected to the connecting sleeve 11 by rotating the threaded rod 4 again, and then the fixing pin 8 is removed. By rotating the threaded rod 4, the threaded sleeve 3 and the threaded rod 4 rotate together at this time, so that the fixing piece moves upward along the movable groove 6 and abuts against the end face of the nut 2, thereby achieving the fixation of the nut 2 and improving the stability of the connection between the threaded body and the nut 2.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-tightening bolt for wind power equipment, comprising a bolt body (1), characterized in that: The top surface of the bolt body (1) is provided with a mounting cavity (10), the outer circumferential surface of the bolt penetrating therethrough is provided with a movable groove (6) communicating with the mounting cavity (10), a threaded rod (4) is provided in the mounting cavity (10), a connecting piece for controlling the rotation of the threaded rod (4) is provided on the top surface of the bolt body (1), a nut (2) is connected to the threaded sleeve (3) of the bolt body (1), a fixing piece abutting against the end surface of the nut (2) is provided in the mounting cavity (10), the threaded sleeve (3) of the fixing piece is connected to the threaded rod (4), and a rotating ring (5) is fixedly connected to the top of the threaded rod (4).

2. A self-tightening bolt for wind power equipment according to claim 1, characterized in that: The connecting member comprises a threaded sleeve (3) rotatably mounted on the top surface of the bolt body (1); the threaded rod (4) and the threaded sleeve (3) are connected inside the threaded sleeve (3); and a pin is provided on one side of the threaded sleeve (3) for limiting the threaded sleeve (3).

3. A self-tightening bolt for wind power equipment according to claim 2, characterized in that: The pin component comprises a fixing pin (8) which passes through the threaded sleeve (3) and is inserted into the bolt body (1); the top surface of the bolt body (1) is provided with an indicating block (9) which is coaxial with the fixing pin (8).

4. The self-tightening bolt for wind power equipment according to claim 1, characterized in that: The fixing member comprises a connecting sleeve (11) connected to a threaded sleeve (3) on a threaded rod (4), and blocks (7) extending out of movable grooves (6) are fixedly connected to both sides of the connecting sleeve (11), and the blocks (7) on both sides abut against one end of a nut (2).

5. A self-tightening bolt for wind power equipment according to claim 4, characterized in that: The outer diameter of the connecting sleeve (11) is smaller than the inner diameter of the mounting cavity (10), and the thickness of the threaded sleeve (3) and the stopper (7) is matched to the thickness of the moving groove (6).

6. The self-tightening bolt for wind power equipment according to claim 4, characterized in that: The corners of the connecting sleeve (11) and the stopper (7) are both arc-shaped chamfers.

7. The self-tightening bolt for wind power equipment according to claim 1, characterized in that: A positioning shaft (12) is fixedly connected to the bottom of the threaded rod (4), and a positioning hole (13) matching the positioning shaft (12) is provided at the bottom of the installation cavity (10).

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