CN210397405U - Nut anti-loosening structure - Google Patents

Nut anti-loosening structure Download PDF

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Publication number
CN210397405U
CN210397405U CN201920983232.1U CN201920983232U CN210397405U CN 210397405 U CN210397405 U CN 210397405U CN 201920983232 U CN201920983232 U CN 201920983232U CN 210397405 U CN210397405 U CN 210397405U
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CN
China
Prior art keywords
bolt
nut
locknut
top surface
shank
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Active
Application number
CN201920983232.1U
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Chinese (zh)
Inventor
马彬荣
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ZHEJIANG HUACHANG HYDRAULIC MACHINERY CO Ltd
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ZHEJIANG HUACHANG HYDRAULIC MACHINERY CO Ltd
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Priority to CN201920983232.1U priority Critical patent/CN210397405U/en
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Abstract

The utility model discloses a nut anti loosening structure, including locknut and shank of bolt, through interior external screw thread swing joint between locknut and the shank of bolt, locknut's top surface fixed mounting has the toper ring, locknut all runs through the bolt groove of having seted up with the top surface of toper ring, the top surface fixed mounting of shank of bolt has the screw rod, and the surface of screw rod is close to the top position and has seted up the ring channel, the position fixed mounting that the top surface of screw rod is close to the ring channel has the dog. A nut anti loosening structure, nut one end is the toper, bolt one end has a ring channel, use lockbolt processingequipment in crowded full ring channel of bolt with the toper part of nut, when the bolt vibrations, the nut is in the stopping state all the time, fine play locking effect.

Description

Nut anti-loosening structure
Technical Field
The utility model relates to a locking structure field, in particular to nut locking structure.
Background
When the hydraulic oil cylinder works, vibration, impact and high temperature are easy to generate due to the fact that the hydraulic oil cylinder needs to move back and forth, and a bolt structure capable of preventing loosening is needed to fix the piston;
the existing nut anti-loosening structure has certain defects when in use, a piston of a hydraulic oil cylinder is generally fixed by a nut, the traditional nut anti-loosening method comprises a spring gasket, a locking nut, glue and the like, but the hydraulic oil cylinder has working conditions of vibration, impact, high temperature and the like in work, the nut can be loosened for a long time, the other traditional method adopts a split pin for loosening prevention, the defects are that the efficiency is low, the labor intensity is high, scrap iron and burrs generated during drilling are difficult to remove, the cleanliness of the hydraulic oil cylinder is influenced, and the product quality is influenced, therefore, the nut anti-loosening structure is provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a nut anti loosening structure can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a nut anti loosening structure, includes lock nut and shank of bolt, through interior external screw thread swing joint between lock nut and the shank of bolt, lock nut's top surface fixed mounting has the toper ring, lock nut all runs through with the top surface of toper ring and has seted up the bolt groove, the top surface fixed mounting of shank of bolt has the screw rod, and the surface of screw rod is close to the top position and has seted up the ring channel, the position fixed mounting that the top surface of screw rod is close to the ring channel has the dog.
Preferably, the diameter of the bolt rod is larger than that of the bolt rod, and the diameter of the annular groove is smaller than that of the stop block.
Preferably, the use method of the nut anti-loose structure is characterized by comprising the following steps:
i, assembling: rotating the locknut to the outer surface of the bolt rod, and then putting the locknut on a workbench;
II, flat riveting: extruding the top end of the conical ring by using spin riveting equipment to enable the top end of the conical ring to be parallel to the outer surface of the bottom end of the stop block;
III, closing and riveting: tightening the conical ring by using spin riveting equipment so as to enable the top end of the conical ring to be in contact with the inner surface of the annular groove;
IV, spot riveting: and extruding the end face of the bolt rod by using a press machine to rivet three points, and eliminating the gap between the conical ring and the annular groove.
Preferably, in step I, the locknut is rotated to the outer surface of the bolt rod through the motor, and the bottom end of the motor is provided with the torque sensor.
Preferably, in the step II, the bottom end of the spin riveting device is provided with a riveting wheel, and the inner diameter of the riveting wheel is equal to the outer diameter of the stop block 7.
Compared with the prior art, the utility model discloses following beneficial effect has:
one end of the nut is conical, one end of the bolt is provided with an annular groove, the conical part of the nut is fully extruded in the annular groove of the bolt when the nut is used, and the nut is always in a stopping state when the bolt vibrates, so that the nut plays a good role in preventing looseness.
Drawings
Fig. 1 is a structural diagram of a locknut in a locknut structure of the utility model;
fig. 2 is a cross-sectional view of a locknut in the nut anti-loosening structure of the present invention;
fig. 3 is a partial structure diagram of the nut anti-loosening structure of the present invention;
fig. 4 is a cross-sectional view of the nut anti-loosening structure after being processed by the motor in the use method of the invention;
fig. 5 is a cross-sectional view of the nut anti-loosening structure after being processed by a first riveting machine in the use method of the invention;
fig. 6 is a cross-sectional view of the nut anti-loosening structure after being processed by a second spin riveting machine in the use method of the invention;
fig. 7 is a cross-sectional view of the nut anti-loosening structure after being processed by a press machine in the use method of the invention.
In the figure: 1. a locknut; 2. a bolt shank; 3. a conical ring; 4. a bolt slot; 5. a screw; 6. an annular groove; 7. and a stop block.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-3, a nut anti-loosening structure comprises an anti-loosening nut 1 and a bolt rod 2, wherein the anti-loosening nut 1 is movably connected with the bolt rod 2 through internal and external threads, a conical ring 3 is fixedly mounted on the outer surface of the top end of the anti-loosening nut 1, a bolt groove 4 is formed in the outer surface of the top end of the anti-loosening nut 1 and the outer surface of the top end of the conical ring 3 in a penetrating mode, a screw rod 5 is fixedly mounted on the outer surface of the top end of the bolt rod 2, an annular groove 6 is formed in the outer surface of the screw rod 5, and a stop block 7 is.
Referring to fig. 3, the diameter of the bolt shank 2 is larger than that of the screw 5, and the diameter of the annular groove 6 is smaller than that of the stopper 7.
Referring to fig. 4, a method for using a nut anti-loose structure is characterized by comprising the following steps:
i, assembling: the locknut 1 is rotated to the outer surface of the bolt rod 2 and then placed on a workbench, the locknut 1 is rotated to the outer surface of the bolt rod 2 through a motor, and a torque sensor is arranged at the bottom end of the motor;
II, flat riveting: extruding the top end of the conical ring 3 by using spin riveting equipment to enable the top end of the conical ring 3 to be parallel to the outer surface of the bottom end of the stop block 7, arranging a riveting wheel at the bottom end of the spin riveting equipment, and enabling the inner diameter of the riveting wheel to be equal to the outer diameter of the stop block 7;
III, closing and riveting: tightening the conical ring 3 using a spin riveting apparatus so as to bring the top end of the conical ring 3 into contact with the inner surface of the annular groove 6;
IV, spot riveting: and (3) extruding the end face of the bolt rod 2 by using a press machine to rivet three points, and eliminating the gap between the conical ring 3 and the annular groove 6.
The top of check bolt processing workstation has set gradually motor, spin riveting machine, No. two spin riveting machines and press along the clockwise, and the user is earlier with the piston sleeve at the surface of shank of bolt 2, later manual rotatory to the surface of shank of bolt 2 with lock nut 1 again, later places the motor bottom.
The nut sleeve at the bottom end of the motor is sleeved on the outer surface of the locknut 1, the bottom end of the locknut 1 is rotated to be attached to the surface of the piston by being driven by the motor, and the first step is completed as shown in fig. 4.
After the first step, the workpiece is placed below a first spin riveting machine which is a plane spin riveting machine, the conical ring 3 is rotated and extruded downwards, so that the conical ring 3 of the locknut 1 is screwed downwards to form a plane, the plane is aligned with the upper edge of the annular groove 6 of the bolt rod 2, and the second step is completed as shown in fig. 5.
After the second step, the workpiece is placed below a second spin riveting machine, the second spin riveting machine is a closed spin riveting machine, the conical ring 3 is extruded into the annular groove 6 on the surface of the bolt rod 2 by the riveting wheel, so that the top end of the conical ring 3 is in contact with the inner surface of the annular groove 6, and the third step is completed as shown in fig. 6.
After the third step, the workpiece is placed below the press, the riveting wheel extrudes the end face of the bolt rod 2 to rivet three points, the gap in the annular groove 6 is completely eliminated, and the processing is completed as shown in fig. 7.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. The utility model provides a nut anti loosening structure, includes locknut (1) and shank of bolt (2), through interior external screw thread swing joint, its characterized in that between locknut (1) and shank of bolt (2): the utility model discloses a lock nut, including lock nut (1), top surface fixed mounting of lock nut (1) has toper ring (3), the top surface of lock nut (1) and toper ring (3) all runs through and has seted up bolt groove (4), the top surface fixed mounting of shank of bolt (2) has screw rod (5), and the surface of screw rod (5) is close to the top position and has seted up ring channel (6), the position fixed mounting that the top surface of screw rod (5) is close to ring channel (6) has dog (7).
2. The nut anti-loosening structure according to claim 1, wherein: the diameter of the bolt rod (2) is larger than that of the screw rod (5), and the diameter of the annular groove (6) is smaller than that of the stop block (7).
CN201920983232.1U 2019-06-27 2019-06-27 Nut anti-loosening structure Active CN210397405U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920983232.1U CN210397405U (en) 2019-06-27 2019-06-27 Nut anti-loosening structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920983232.1U CN210397405U (en) 2019-06-27 2019-06-27 Nut anti-loosening structure

Publications (1)

Publication Number Publication Date
CN210397405U true CN210397405U (en) 2020-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920983232.1U Active CN210397405U (en) 2019-06-27 2019-06-27 Nut anti-loosening structure

Country Status (1)

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CN (1) CN210397405U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112145534A (en) * 2019-06-27 2020-12-29 浙江华昌液压机械有限公司 Nut anti-loosening structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112145534A (en) * 2019-06-27 2020-12-29 浙江华昌液压机械有限公司 Nut anti-loosening structure

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