Super-long bolt fastener for three-phase asynchronous motor

Abstract

The utility model discloses a three-phase asynchronous motor super-long bolt fastener, which comprises a motor and an eyebolt, the top of the motor is respectively provided with a thread groove and a slot, the end part of the eyebolt is provided with an anti-loosing assembly, the anti-loosing assembly comprises a sleeve which can be sleeved with the end part of the eyebolt and can only slide, and an insertion rod fixed with the sleeve, and the insertion rod is provided with a thread groove and a slot. A magnetic attraction block is arranged at the end of the insertion rod, and after the eyebolt is completely connected with the threaded groove, the insertion rod can be connected with the insertion groove in an inserted mode in a sliding mode, and the magnetic attraction block is attracted into the insertion groove in a magnetic mode. And the eyebolt cannot rotate to loosen and fall off, and is very stable in the hoisting process.

Description

Technical Field

[0001] The utility model relates to the field of bolt fasteners, in particular to an extra-long bolt fastener for a three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is an induction motor that is powered by a 380V three-phase AC current. Its working principle is mainly based on electromagnetic induction. The stator winding generates a rotating magnetic field through a three-phase symmetrical AC current. This rotating magnetic field cuts the rotor winding, thereby generating an induced electromotive force and current in the rotor circuit, causing the rotor to rotate under the action of the rotating magnetic field. The three-phase asynchronous motor is usually equipped with eyebolt fasteners on the top for easy lifting.

[0003] However, the existing eyebolt fasteners are only connected to the three-phase asynchronous motor through threads. If they rotate during the lifting process, the threads will loosen and fall off, which is dangerous and may cause damage. Utility Model Content

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides an extra-long bolt fastener for a three-phase asynchronous motor to solve the problem that the existing eye bolt fastener proposed in the background technology is only connected to the thread of the three-phase asynchronous motor through a thread. If it rotates during the lifting process, the thread will loosen and fall off, which is relatively dangerous and may cause damage.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an extra-long bolt fastener for a three-phase asynchronous motor, comprising a motor and an eyebolt, wherein a threaded groove and a slot are respectively provided on the top of the motor, and an anti-loosening component is provided at the end of the eyebolt, wherein the anti-loosening component comprises a sleeve which can be sleeved on the end of the eyebolt and can only slide, and an insertion rod fixed to the sleeve, wherein a magnetic block is provided at the end of the insertion rod, and when the eyebolt is fully connected to the threaded groove, the insertion rod can be slidably plugged into the slot, and the magnetic block is magnetically attracted to the slot.

[0006] Preferably, the eye bolt comprises a circular ring and a screw rod, the end of the screw rod is provided with a thread, and the circular ring and the screw rod are integrally formed.

[0007] Preferably, the screw rod is provided with sliding grooves on both sides of one threaded end, and two sliders are fixed to the inner surface of the sleeve. When the sleeve is sleeved with one threaded end of the screw rod, the two sliders can be slidably connected with the two sliding grooves.

[0008] Preferably, the insertion rod is L-shaped, and the magnetic block is cylindrical and consistent with the outer diameter of the insertion rod and the inner diameter of the slot.

[0009] Preferably, an anti-sway component is provided at the inner top of the circular ring, and the anti-sway component includes a clamping block fixed on the top of the inner ring surface of the circular ring, and the clamping block is provided with an arc surface with an arc smaller than that of the circular ring.

[0010] Preferably, the inner ring surface of the circular ring is provided with an annular groove, the clamping block is embedded in the groove, and the top of the circular ring is provided with a socket that passes through the groove. The anti-sway assembly also includes a fastening bolt and a fastening nut, the fastening bolt is fixed to the clamping block and passes through the socket, and the fastening nut is located above the circular ring and connected to the fastening bolt.

[0011] Compared with the prior art, the beneficial effects that the utility model can achieve are: the extra-long bolt fastener of the utility model is an eye bolt, and a detachable anti-loosening component is provided at one end of the eye bolt thread, which includes a plug rod that can only be raised and lowered, and a magnetic block is provided at the end of the plug rod. When the eye bolt is threadedly connected to the thread groove of the three-phase asynchronous motor, the plug rod is inserted into the slot of the three-phase asynchronous motor to magnetically attract the end of the plug rod into the slot, and the plug rod that can only be raised and lowered will be firmly connected to the slot due to gravity and magnetic force. When the plug rod and the eye bolt are connected to the motor, the eye bolt will not rotate and loosen and fall off, and it is very stable during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the utility model after installation with a three-phase asynchronous motor;

[0013] Figure 2 This is a cross-sectional view of the utility model;

[0014] Figure 3 This is a cross-sectional view of the circular ring of the utility model;

[0015] Figure 4 It is the overall external schematic diagram of the utility model;

[0016] Among them: 1. Motor; 2. Eyebolt; 3. Ring; 4. Screw; 5. Threaded groove; 6. Slot; 7. Anti-sway assembly; 8. Embedded groove; 9. Block; 10. Socket; 11. Fastening bolt; 12. Fastening nut; 13. Anti-loosening assembly; 14. Slide; 15. Slider; 16. Sleeve; 17. Rod; 18. Magnetic block. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0018] Embodiment:

[0019] like Figure 1-4 As shown, the utility model provides an extra-long bolt fastener for a three-phase asynchronous motor, comprising a motor 1 and an eyebolt 2, wherein a threaded groove 5 and a slot 6 are respectively provided on the top of the motor 1, an anti-loosening component 13 is provided at the end of the eyebolt 2, and the anti-loosening component 13 comprises a sleeve 16 which can be sleeved on the end of the eyebolt 2 and can only slide, and an insertion rod 17 fixed to the sleeve 16, a magnetic block 18 is provided at the end of the insertion rod 17, and when the eyebolt 2 is fully connected with the threaded groove 5, the insertion rod 17 can be slidably plugged into the slot 6, and the magnetic block 18 is magnetically attracted in the slot 6.

[0020] In this embodiment, specifically, the eye bolt 2 includes a ring 3 and a screw rod 4, the end of the screw rod 4 is provided with a thread, and the ring 3 and the screw rod 4 are integrally formed.

[0021] In this embodiment, specifically, the screw rod 4 is provided with a slide groove 14 on both sides of one end of the thread, and two sliders 15 are fixed to the inner surface of the sleeve 16. When the sleeve 16 is sleeved with one end of the thread of the screw rod 4, the two sliders 15 can be slidably connected with the two slide grooves 14;

[0022] Among them, one end of the slide groove 14 passes through the end of the screw rod 4 with a threaded end, which can facilitate the sleeve 16 and the slider 15 to be sleeved with the screw rod 4 for easy disassembly and assembly.

[0023] In this embodiment, specifically, the insertion rod 17 is L-shaped, and the magnetic block 18 is cylindrical and has the same outer diameter as the insertion rod 17 and the inner diameter of the slot 6;

[0024] The housing of the motor 1 must be made of iron. If it is made of other materials, even if the magnetic block 18 cannot be magnetically attracted, there will be a certain anti-loosening component 13 due to its gravity, so that the insertion rod 17 is inserted into the slot 6 due to gravity and will not fall out of the slot 6 when rotating during hoisting.

[0025] In this embodiment, specifically, an anti-sway component 7 is provided at the inner top of the ring 3, and the anti-sway component 7 includes a clamping block 9 fixed to the top of the inner ring surface of the ring 3, and the clamping block 9 is provided with an arc surface with an arc smaller than that of the ring 3;

[0026] Among them, the small arc surface can be more consistent with the lifting ring of the lifting device used for lifting. If the lifting ring of the lifting device is already consistent with the circular ring 3, the anti-sway component 7 can be removed and not used. If the lifting ring of the lifting device is thinner, it can be matched with the small arc block 9 to increase the contact surface, because its friction reduces the amplitude of swinging in multiple directions.

[0027] In this embodiment, specifically, the inner ring surface of the ring 3 is provided with an annular groove 8, the clamping block 9 is embedded in the groove 8, and the top of the ring 3 is provided with a socket 10 that passes through the groove 8. The anti-sway component 7 also includes a fastening bolt 11 and a fastening nut 12. The fastening bolt 11 is fixed to the clamping block 9 and passes through the socket 10. The fastening nut 12 is located above the ring 3 and is connected to the fastening bolt 11.

[0028] Working principle: when in use, align the sleeve 16 with the screw 4, and align the two internal sliders 15 with the two slide grooves 14 of the screw 4, and then sleeve the sleeve 16 with the screw 4, so that the two sliders 15 are slidably connected with the two slide grooves 14, slide the sleeve 16 to the top, and thread the screw 4 with the motor 1, that is, the thread groove 5 of the three-phase asynchronous motor. After connection, slide the sleeve 16 down to insert the magnetic block 18 at the end of the plug rod 17 into the slot 6, so that the magnetic block 18 is magnetically attracted to the slot 6 to prevent the plug rod 17 from moving up. When the motor 1 is subsequently hoisted, even if it rotates during the hoisting process, the screw 4 and the plug rod 17 are connected to the motor 1 at the same time, and the screw 4 will not loosen or fall off.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extra-long bolt fastener for a three-phase asynchronous motor, comprising a motor (1) and an eyebolt (2), wherein a thread groove (5) and a slot (6) are respectively provided on the top of the motor (1), and characterized in that: The end of the eye bolt (2) is provided with an anti-loosening component (13), and the anti-loosening component (13) comprises a sleeve (16) which can be sleeved on the end of the eye bolt (2) and can only slide, and an insertion rod (17) fixed to the sleeve (16), and a magnetic attraction block (18) is provided at the end of the insertion rod (17), and when the eye bolt (2) is completely connected with the threaded groove (5), the insertion rod (17) can be slidably inserted into the slot (6), and the magnetic attraction block (18) is magnetically attracted in the slot (6).

2. The three-phase asynchronous motor extra-long bolt fastener according to claim 1, characterized in that: The eyebolt (2) comprises a circular ring (3) and a screw rod (4); the end of the screw rod (4) is provided with a thread, and the circular ring (3) and the screw rod (4) are integrally formed.

3. The three-phase asynchronous motor extra-long bolt fastener according to claim 2, characterized in that: The screw rod (4) is provided with sliding grooves (14) on both sides of one end with a thread, and two sliding blocks (15) are fixed on the inner surface of the sleeve (16). When the sleeve (16) is sleeved with one end of the screw rod (4), the two sliding blocks (15) can be slidably connected with the two sliding grooves (14).

4. The three-phase asynchronous motor extra-long bolt fastener according to claim 3, characterized in that: The insertion rod (17) is L-shaped, and the magnetic attraction block (18) is cylindrical and consistent with the outer diameter of the insertion rod (17) and the inner diameter of the slot (6).

5. The three-phase asynchronous motor extra-long bolt fastener according to claim 4, characterized in that: An anti-sway component (7) is provided at the inner top of the circular ring (3), and the anti-sway component (7) comprises a clamping block (9) fixed to the top of the inner ring surface of the circular ring (3), and the clamping block (9) is provided with an arc surface with an arc smaller than that of the circular ring (3).

6. The extra-long bolt fastener for a three-phase asynchronous motor according to claim 5, characterized in that: The inner ring surface of the circular ring (3) is provided with an annular embedding groove (8), the clamping block (9) is embedded in the embedding groove (8), the top of the circular ring (3) is provided with an insertion hole (10) which penetrates the embedding groove (8), and the anti-sway component (7) also includes a fastening bolt (11) and a fastening nut (12), the fastening bolt (11) is fixed to the clamping block (9) and penetrates the insertion hole (10), and the fastening nut (12) is located above the circular ring (3) and is connected to the fastening bolt (11).

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