CN112412952A

CN112412952A - Lever-type anti-loosening nut and lever-type anti-loosening nut and bolt fastening device

Info

Publication number: CN112412952A
Application number: CN202011357854.7A
Authority: CN
Inventors: 朱振武; 谭强斌; 朱志胤
Original assignee: Tianhai Aeroengine Co ltd
Current assignee: Tianhai Aeroengine Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-02-26
Anticipated expiration: 2040-11-27
Also published as: CN112412952B

Abstract

The invention discloses a lever-type anti-loosening nut, a lever-type anti-loosening nut and a bolt fastening device. And then the nut and the lever anti-loosening buckle system are simultaneously controlled through a specially designed tightening device, so that the nut is loosened and loosened. The lever type anti-loosening nut and bolt fastening device is simple in structure, easy to operate, good in anti-loosening effect and capable of being used repeatedly.

Description

Lever-type anti-loosening nut and lever-type anti-loosening nut and bolt fastening device

Technical Field

The invention relates to a fastening device, in particular to a lever-type anti-loosening nut and bolt fastening device, and belongs to the technical field of general machinery.

Background

With the vigorous development of mechanical devices in China, mechanical mechanisms in a plurality of mechanical devices need to be assembled in a replaceable mode. The bolt and the nut are the most widely used detachable fastening devices. The application of the detachable fastening device can greatly reduce the production difficulty of the mechanical device and improve the repair efficiency of the mechanical device.

In practical application, a plurality of high-frequency vibration working conditions exist in the use scene of the bolt and nut fastening device, and the common bolt and nut device can be loosened under the high-frequency vibration working condition, particularly in the application on a high-speed railway body or an engine. It causes great hidden trouble to the production construction.

In order to solve the technical problem, in the prior art, the following methods are generally adopted to perform self-locking on the bolt and nut fastening device. Such as: shortening the thread pitch of the bolt thread, matching and self-locking double nuts, tightly pushing a spring gasket, welding the nut, destroying the screw thread screwed out of the nut and the like. The practical use condition shows that bolt screw thread pitch shortens, two nut cooperation auto-locks, spring shim top tightly etc. do have certain locking efficiency, but when meetting the operating mode that the vibration frequency is high and the period is long, the bolt nut will produce not hard up certainly. And the nut welds up, destroys the scheme such as nut back-out screw thread, when meetting to dismantle mechanical device, needs to cut off the nut earlier, and the bolt is taken off in the pine again, can greatly influence work efficiency and cause unnecessary waste.

Therefore, how to provide a loosening prevention nut or a loosening prevention nut and bolt fastening device which is not affected by vibration or can offset the influence of vibration under the working condition of high-frequency vibration so as to obtain the loosening prevention effect. How to provide a locking nut or a locking nut and bolt fastening device is the research direction of the prior art.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a lever type anti-loosening clamping system arranged in a nut and a fastening device formed by using the anti-loosening nut and a bolt. Firstly, a nut is screwed into a gasket (the gasket is fixed on a fastener) or the fastener through a specially designed special tightening device to finish the fastening operation; after the nut is screwed, the screwing device is loosened, and the spring in the lever-type anti-loosening buckle system can eject the buckle and embed the buckle into a clamping groove on the gasket or the fastener; therefore, in the vibration process, the aim of preventing looseness is fulfilled due to the fact that the force generated by vibration is offset by the acting force between the buckle and the clamping groove, and the effect that the fastening device of the nut and the bolt is not influenced by vibration is achieved.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

according to a first embodiment of the invention, a lever type anti-loosening nut is provided, which comprises a nut main body, a threaded hole and an internal thread. The threaded hole is arranged on the nut body. The internal thread is arranged on the inner wall of the threaded hole. The method is characterized in that: the anti-loosening nut further comprises a through hole and an accommodating cavity. The through hole is formed in the upper surface of the nut body. The accommodating cavity is formed in the lower surface of the nut body. The bottom end of the through hole is communicated with the top end of the accommodating cavity. The through hole and the accommodating cavity are both positioned in the nut body between the inner wall of the threaded hole and the outer wall of the nut body. And a lever anti-loosening buckling system is further arranged in the accommodating cavity.

Preferably, the anti-loosening nut further comprises a fixing shaft hole and a shaft rod. The fixed shaft holes are formed in two opposite side walls of the accommodating cavity. Two ends of the shaft lever are respectively fixed in the fixed shaft holes of the two opposite side walls of the accommodating cavity. The lever anti-loosening buckling system is arranged in the accommodating cavity through the fixing shaft hole and the shaft lever, and can rotate freely by taking the shaft lever as a rotating shaft.

Preferably, the lever anti-loose buckle system comprises a buckle main body, a shaft hole seat, a central shaft hole and an elastic piece. The buckle main body is of a plate-shaped structure. The shaft hole seat is arranged on the surface of the middle part of the buckle main body. The central shaft hole is arranged on the shaft hole seat. The elastic piece is arranged on the upper surface of the buckle main body and is positioned on one side of the shaft hole seat.

Preferably, the elastic element is one of a spring, a spring sheet and an elastic colloid.

Preferably, the lever anti-loose buckle system further comprises a stress bulge and a fixing bulge. The stress bulge and the fixing bulge are respectively arranged on the surfaces of the buckle main bodies on the two sides of the shaft hole seat. The bottom end of the elastic piece is sleeved on the fixed bulge. The opening direction of the central shaft hole is perpendicular to the connecting line direction of the stress protrusion and the fixing protrusion.

Preferably, the front side and the rear side of the buckle main body in the opening direction of the central shaft hole are arc-shaped surfaces.

Preferably, the nut body further comprises a fixing groove therein. The fixed groove is formed in the top surface of the inner cavity of the accommodating cavity. The axis of the fixed groove and the axis of the fixed protrusion are located on the same vertical line. The top end of the elastic piece is embedded into the fixing groove.

Preferably, the upper surface of the nut body is further provided with a tightening mechanism. The tightening mechanism is a protrusion and/or a groove.

Preferably, the device further comprises a tightening device. The tightening device is installed at the upper end of the anti-loosening nut. The tightening device comprises a handle, a tightening head, a tightening part and a through rod. The tightening head is of an annular columnar structure. One end of the handle is fixed on the outer side wall of the tightening head. The tightening part and the through rod are both arranged on the lower ring surface of the tightening head.

According to a second embodiment of the present invention, there is provided a lever type anti-loosening nut and bolt fastening device including an anti-loosening nut and a bolt. The anti-loosening nut is assembled with the bolt through internal threads. The anti-loosening nut comprises a nut main body, a threaded hole and an internal thread. The threaded hole is arranged on the nut body. The internal thread is arranged on the inner wall of the threaded hole. The bolt comprises a nut, a screw and an external thread. The nut is arranged at one end of the screw rod. The external thread is arranged on the outer surface of the screw rod. The anti-loosening nut further comprises a through hole and an accommodating cavity. The through hole is formed in the upper surface of the nut body. The accommodating cavity is formed in the lower surface of the nut body. The bottom end of the through hole is communicated with the top end of the accommodating cavity. The through hole and the accommodating cavity are both positioned in the nut body between the inner wall of the threaded hole and the outer wall of the nut body. And a lever anti-loosening buckling system is further arranged in the accommodating cavity.

Preferably, the device also comprises a fixed shaft hole and a shaft rod. The fixed shaft holes are formed in two opposite side walls of the accommodating cavity. Two ends of the shaft lever are respectively fixed in the fixed shaft holes of the two opposite side walls of the accommodating cavity. The lever anti-loosening buckling system is arranged in the accommodating cavity through the fixing shaft hole and the shaft lever, and can rotate freely by taking the shaft lever as a rotating shaft.

Preferably, the device further comprises a gasket. The washer is disposed between the fastener and the anti-loosening nut. The gasket is of an annular columnar structure. The gasket is fixed on the fastener, and is provided with an anti-loosening clamping groove matched with the buckle main body.

Preferably, the fastener is provided with a fixed clamping groove matched with the buckle main body, and the fixed clamping groove and the anti-loosening clamping groove are overlapped in the vertical direction.

Preferably, the tightening part is a protrusion and/or a groove.

Preferably, a protrusion-groove type anti-loosening combined structure is arranged between the bolt and the fastener.

In the invention, the anti-loosening nut is provided with an accommodating cavity, a lever anti-loosening buckle system is arranged in the accommodating cavity, and the lever anti-loosening buckle system controls the buckle to pop out and recover in a lever mode. When the nut needs to be screwed down or loosened, the through rod of the screwing device applies external force to the lever anti-loosening buckle system to enable the buckle to be recovered into the accommodating cavity, and therefore screwing and loosening of the nut can be achieved through rotating the nut. After the nut has been screwed up, take off the tightening device, at this moment, the external force is no longer exerted to the nut (the locking buckle system of lever no longer receives the external force that the tightening device was exerted), the locking buckle system of lever pops out the buckle automatically and imbeds to the fixed slot of mounting in (perhaps realizes the purpose of locking up through embedding in the locking draw-in groove that moves that sets up on the gasket, at this moment, the gasket need with form the fixed connection relation between the mounting), and then realize not receiving the vibration effect after the nut is screwed up and produce not hard up. The lever anti-loose buckle system has the effects that when the nut is assembled and disassembled, the lever anti-loose buckle system can control the buckle to be in a recovery state (in the vertical direction, the lower surface of the buckle main body is not lower than the height of the lower bottom surface of the nut) so as not to influence the assembling and disassembling operation; on the contrary, after the nut is installed, the lever anti-loosening buckle system can control the buckle to be in a popup state. The pop-up state can be regarded as the natural state of the anti-loosening nut under the action of no external force. The anti-loosening nut provided with the lever anti-loosening buckle system can be used repeatedly while being rapidly assembled and disassembled, and the anti-loosening function of the anti-loosening nut is not influenced.

In the invention, the through hole and the accommodating chamber are both arranged on the nut body, and the through hole is arranged on the upper surface of the nut body. The accommodating cavity is formed in the lower surface of the nut body. The bottom end of the through hole is communicated with the top end of the accommodating cavity. Namely, the through hole and the accommodating cavity are both positioned in the nut body between the inner wall of the threaded hole and the outer wall of the nut body. It should be noted that the size of the outlet of the through hole is smaller than the size of the opening of the accommodating cavity.

In the invention, the front and rear side walls of the accommodating chamber are also provided with fixing shaft holes for installing a lever anti-loosening buckle system. The "front-to-back" refers to a direction from the outer wall of the nut toward the threaded bore of the nut. For convenience of description, a direction perpendicular to the "front-rear" direction is a "left-right" direction. Taking fig. 4 as an example, the "left-right" direction is the horizontally-oriented left-right direction of fig. 4; the "front-to-back" direction is the direction that is directed up and down perpendicular to the plane of the paper in fig. 4. For convenience of description, the following description is consistent with the present invention.

In the invention, the lever anti-loose buckle system comprises a buckle main body, a shaft hole seat, a central shaft hole and an elastic piece. The buckle main body is of a plate-shaped structure (a geometric block with certain length, width and thickness, including a column shape, a strip shape, a plate shape and the like). The shaft hole seat is arranged on the surface of the middle part of the buckle main body. The central shaft hole is arranged on the shaft hole seat. The elastic member (such as a spring, a spring sheet, an elastic colloid, preferably a spring) is arranged on the upper surface of the buckle main body and is positioned on one side (left side or right side) of the shaft hole seat.

In the invention, the lever anti-loose buckling system further comprises a stress bulge and a fixing bulge. The stress bulge and the fixing bulge are respectively arranged on the surfaces of the buckle main bodies on two sides (left and right sides) of the shaft hole seat. The bottom end of the elastic piece is sleeved on the fixed bulge (the fixed bulge and the elastic piece need to be positioned on the same side of the shaft hole seat). The opening of the central shaft hole is positioned on the side surface of the shaft hole seat which is not adjacent to the stress protrusion and the fixing protrusion (namely, the opening direction of the central shaft hole is the direction from the front side wall to the rear side wall of the shaft hole seat). The front opening and the rear opening of the central shaft hole need to correspond to the openings of the fixed shaft holes on the front side wall and the rear side wall of the accommodating chamber, so that after the shaft lever penetrates through the central shaft hole, two ends of the shaft lever are fixed in the fixed shaft holes on the front side wall and the rear side wall of the accommodating chamber, and the purpose that the lever anti-loosening buckle system is installed in the accommodating chamber is achieved; it should be noted that, when the buckle main body of the lever anti-loose buckle system is in a horizontal state after being installed, the lower surface of the buckle main body must not exceed the lower edge of the accommodating chamber (i.e. must not protrude out of the horizontal plane where the lower bottom surface of the nut is located); meanwhile, when the buckle main body is only acted by the elastic piece, the buckle main body at one end of the elastic piece can exceed the lower edge of the accommodating chamber (namely the horizontal plane where the lower bottom surface of the nut protrudes); therefore, the buckle main body is provided with enough space above the accommodating chamber from the upper top surface, so that when the buckle main body rotates by taking the shaft rod as a fulcrum, after one end of the buckle main body is stressed and descends by a certain height in the vertical direction (in the vertical direction same as the direction of the threaded hole of the nut), the other end of the buckle main body can have a certain ascending activity space.

Further, in the holding chamber, the atress arch in the buckle main part is located holding chamber top through-hole open-ended under to the effect that the through-rod can be accurate after passing through the through-hole is protruding in the atress, and then reaches the purpose of applying the effort to the buckle main part. A fixed groove is also formed in the top of the accommodating chamber; the fixing groove is positioned right above the fixing bulge on the buckle main body; the upper end of the elastic piece is embedded into the fixing groove; the lower end of the elastic piece is sleeved on the fixed bulge. Through the effect of fixed recess and fixed protruding, can play the effect of firm elastic component, when avoiding elastic component to receive external force vibration or buckle main part slope to the phenomenon that elastic component slides and even falls off appears, ensures that elastic component can exert decurrent effort to the buckle main part, realizes locking purpose of moving with the guarantee buckle main part normal pop-up.

Generally, when the elastic member is under a slightly stressed or unstressed state, one end of the buckle main body, which is located at the elastic member, is popped out (by the elastic member) to a certain distance from the opening at the lower end of the accommodating chamber (inserted into the anti-loosening or fixing slot on the gasket or the fixing member). It should be noted that, in the present invention, the anti-loosening clamping groove may be directly formed on the gasket, and then the gasket is fixed to the fixing member. Or a fixed clamping groove is directly formed on the fixing piece. Or, simultaneously, the gasket is provided with an anti-loosening clamping groove and the fixing clamping groove is provided on the fixing piece, at the moment, the anti-loosening clamping groove on the gasket is an anti-loosening clamping groove hole penetrating through the gasket, and the anti-loosening clamping groove hole on the clamping groove is correspondingly matched with the fixing clamping groove on the fixing piece.

In the invention, the tightening device is a special tightening device which is specially arranged and matched with the anti-loosening nut, and comprises a handle, an annular tightening head which is connected with the handle and is provided with a hole in the center, a tightening part and a through rod which are arranged on the ring surface of the annular tightening head (the tightening part and the through rod are arranged on the same ring surface). The diameter of the central hole of the tightening head needs to be larger than the diameter of the bolt so as to facilitate the direct penetration of the screw and prevent the screw extending out of the upper surface of the nut from influencing the combination of the tightening part and the nut. The tightening part is a protrusion or a groove (the tightening part needs to be matched with the groove and the protrusion on the upper surface of the nut, so that the nut can be tightened or loosened). The diameter of the through rod needs to be smaller than the caliber of the through hole in the nut, so that the through rod can conveniently apply pushing force to the stressed protrusion after penetrating through the through hole. It should be noted that, while the tightening mechanism of the tightening part acting on the nut, the through rod also needs to complete the action on the stress protrusion, that is, only after the two simultaneously complete the action purpose, the tightness of the nut can be realized (the through rod realizes the operation that the buckle retracts into the accommodating chamber by pushing the stress protrusion, at this time, the rotation of the nut is not limited by the buckle, so the tightening part can realize the tightness operation of the nut through the interaction with the tightening mechanism in real time).

In the invention, the popping state and the recovery state of the buckle are specifically as follows: when the stress bulge is not acted by the through rod, the elastic piece between the fixing groove and the fixing bulge applies downward elastic force to the fixing bulge by taking the fixing groove as an acting point; because buckle main part and axostylus axostyle are a lever structure, and then exert decurrent thrust to the buckle main part behind the elasticity that the solid arch received the elastic component, the dop main part is because rotatable under the assistance of axostylus axostyle, and then buckle main part is close to fixed bellied one end and can rotate promptly (using fig. 4 as an example, clockwise rotation this moment) and surpass to holding chamber lower part opening, and this state is the pop-up state of buckle promptly. The buckle pops out the back, screws up the logical pole of device and passes through the through-hole to apply decurrent thrust to the atress arch, because buckle main part and axostylus axostyle are a lever structure, the atress arch then promotes the buckle main part and rotates around the axle lever (using figure 4 as an example, be anticlockwise rotation this moment), the buckle main part is close to the bellied one end of atress promptly and regards as the fulcrum with the buckle main part to prize the one end that the elastic component is close to and compress in the elastic component with the buckle main part retrieve the holding cavity after, this state is the recovery state of buckle promptly. Under the recovery state of buckle, the tightening part of tightening device combines with the tightening mechanism of nut and can realize the elasticity operation to the nut. It should be noted that, after the tightening operation of the nut is completed, the tightening device is removed, and the buckle main body is restored to the pop-up state (embedded into the anti-loosening clamping groove or the fixing clamping groove to prevent loosening caused by vibration) under the resilience of the elastic member.

In the invention, in order to better play the anti-loosening effect when the nut rotates, the acting force direction of the buckle and the clamping groove is the direction of the rotating force generated when the nut rotates in general; consequently, set up the working face of buckle and draw-in groove and be located the rotatory power direction vertical plane (perpendicular with the bottom surface of nut, a diameter line coincidence of this perpendicular and nut bottom surface promptly) that produces when the nut rotating, simultaneously, for the reduction stops the effect, the medial surface all sets up to the arcwall face around in the side and the draw-in groove around the buckle main part. The front side surface and the rear side surface of the buckle main body and the front inner side surface and the rear inner side surface in the clamping groove are cambered surfaces formed by arc lines taking the center of the bottom surface of the nut as the center of the arc.

In the present invention, the fastening member refers to any object to be fastened by the loosening prevention nut and bolt fastening device of the present invention.

In the present invention, the length of the bolt can be designed according to the actual working condition, and is, for example, 0.1mm to 10m, preferably 1mm to 5m, more preferably 2mm to 2m, still more preferably 3mm to 1m, and still more preferably 5mm to 0.5 m.

In the present invention, the depth of the accommodating chamber can be designed according to the actual working condition, and is, for example, 0.1mm to 1.5m, preferably 0.5mm to 1m, more preferably 1mm to 0.5m, further preferably 2mm to 0.3m, and further preferably 3mm to 0.1 m.

In the present invention, the diameter of the bolt can be designed according to the actual working condition, and is, for example, 0.1mm to 2m, preferably 1mm to 1m, more preferably 1.5mm to 0.8m, still more preferably 2mm to 0.5m, and still more preferably 2.5mm to 0.4 m.

In the present invention, the thread pitch of the thread structure of the bolt may be designed according to the actual working condition, and is, for example, 0.01mm to 1m, preferably 0.02mm to 0.8m, more preferably 0.03mm to 0.6m, and still more preferably 0.04mm to 0.5 m.

In the present invention, the length of the anti-loosening nut can be designed according to the actual working condition, and is, for example, 0.1mm to 10m, preferably 1mm to 5m, more preferably 2mm to 1m, further preferably 3mm to 0.5m, and further preferably 5mm to 0.2 m.

In the present invention, the diameter (outer diameter) of the anti-loosening nut may be designed according to the actual working condition, and is, for example, 0.1mm to 2m, preferably 1mm to 1m, more preferably 1.5mm to 0.8m, further preferably 2mm to 0.5m, and further preferably 2.5mm to 0.4 m.

In the present invention, the pitch of the thread structure of the anti-loosening nut can be designed according to the actual working condition, and is, for example, 0.01mm to 1m, preferably 0.02mm to 0.8m, more preferably 0.03mm to 0.6m, and still more preferably 0.04mm to 0.5 m.

In the present invention, the number of the tightening parts and the number of the tightening mechanisms are the same, and may be designed according to actual conditions, for example, 1 to 50, preferably 2 to 40, more preferably 3 to 30, and further preferably 4 to 20.

In the invention, the number of the through rods, the number of the through holes, the number of the accommodating cavities and the number of the lever anti-loose clamping systems are the same, and can be designed according to actual working conditions, for example, 1 to 60, preferably 2 to 50, more preferably 3 to 40, and further preferably 4 to 30.

It should be noted that the parameter data are for better describing the technical solution of the present invention, and are not taken as a basis for limiting the protection scope of the present invention, and the number of the parameter changes, the simple replacement of the shape structure, etc. without departing from the concept of the present invention should fall within the protection scope of the present invention.

Compared with the prior art, the invention has the following beneficial technical effects:

1. the invention adopts a special mode of combining the lever anti-loose buckle system with the nut, realizes the purpose of preventing the nut, the nut and the bolt fastening device from loosening, and has simple design structure and good anti-loosening effect.

2. The anti-loosening nut, the nut and bolt fastening device are convenient to disassemble and can be repeatedly and circularly used, repeated disassembly of the fixing piece is facilitated, meanwhile, the loss of the nut and bolt fastening assembly is avoided, and the production cost is reduced.

3. The anti-loosening nut and the nut and bolt fastening device have strong applicability, can meet the fastening requirements of most fastening pieces according to actual requirements, are easy to popularize and have very obvious economic benefit.

Drawings

Fig. 1 is an assembly structure view of the lever type anti-loosening nut and bolt fastening device of the invention.

Fig. 2 is a structure view of the lever type anti-loosening nut of the invention.

Fig. 3 is a bottom view structural diagram of the lever type anti-loosening nut.

FIG. 4 is a cross-sectional structural view of the lever anti-loose snap system of the present invention.

FIG. 5 is a block diagram of the lever anti-loose clip system according to the present invention.

Fig. 6 is a structural view of a tightening apparatus according to the present invention.

Fig. 7 is a view showing the structure of the bolt according to the present invention.

Fig. 8 is a structural diagram of the gasket provided with the anti-loosening clamping groove.

FIG. 9 is a cross-sectional view of a shim with a locking bayonet according to the present invention.

Fig. 10 is a schematic view of the fixing member with a fixing slot according to the present invention.

Reference numerals: 1: a locking nut; 101: a nut body; 102: a threaded hole; 103: an internal thread; 104: a through hole; 105: an accommodating cavity; 106: fixing the shaft hole; 107: a shaft lever; 108: fixing the groove; 109: a tightening mechanism; 2: a lever anti-loose snap system; 201: a buckle main body; 202: a shaft hole seat; 203: a central shaft hole; 204: an elastic member; 205: a stress bulge; 206: a fixed protrusion; 3: a bolt; 301: a nut; 302: a screw; 303: an external thread; 4: tightening the device; 401: a handle; 402: tightening a head; 403: a tightening part; 404: a through rod; 5: a gasket; 501: an anti-loosening clamping groove; 6: a fastener; 601: and fixing the clamping groove.

Detailed Description

The technical solution of the present invention is illustrated below, and the claimed scope of the present invention includes, but is not limited to, the following examples.

A lever type anti-loosening nut 1 comprises a nut body 101, a threaded hole 102 and an internal thread 103. The threaded hole 102 is provided in the nut body 101. The internal thread 103 is provided on the inner wall of the threaded hole 102. The method is characterized in that: the anti-loosening nut 1 further comprises a through hole 104 and an accommodating cavity 105. The through hole 104 is opened in the upper surface of the nut body 101. The receiving cavity 105 is opened on the lower surface of the nut body 101. The bottom end of the through hole 104 is communicated with the top end of the accommodating cavity 105. The through hole 104 and the accommodating cavity 105 are both located in the nut body 101 between the inner wall of the threaded hole 102 and the outer wall of the nut body 101. The accommodating cavity 105 is also internally provided with a lever anti-loose buckling system 2.

A lever type anti-loosening nut and bolt fastening device comprises an anti-loosening nut 1 and a bolt 3. The anti-loose nut 1 is assembled with the bolt 3 through an internal thread 103. The anti-loosening nut 1 comprises a nut body 101, a threaded hole 102 and an internal thread 103. The threaded hole 102 is provided in the nut body 101. The internal thread 103 is provided on the inner wall of the threaded hole 102. The bolt 3 comprises a nut 301, a shank 302 and an external thread 303. The nut 301 is disposed at one end of the screw 302. The external thread 303 is provided on the outer surface of the screw 302. The anti-loosening nut 1 further comprises a through hole 104 and an accommodating cavity 105. The through hole 104 is opened in the upper surface of the nut body 101. The receiving cavity 105 is opened on the lower surface of the nut body 101. The bottom end of the through hole 104 is communicated with the top end of the accommodating cavity 105. The through hole 104 and the accommodating cavity 105 are both located in the nut body 101 between the inner wall of the threaded hole 102 and the outer wall of the nut body 101. The accommodating cavity 105 is also internally provided with a lever anti-loose buckling system 2.

Preferably, the device further comprises a fixed shaft hole 106 and a shaft 107. The fixing shaft holes 106 are formed on two opposite side walls of the accommodating cavity 105. Two ends of the shaft rod 107 are respectively fixed in the fixing shaft holes 106 of two opposite side walls of the accommodating cavity 105. The lever locking clip system 2 is installed in the accommodating cavity 105 through the fixing shaft hole 106 and the shaft rod 107, and the lever locking clip system 2 can rotate freely by taking the shaft rod 107 as a rotating shaft.

Preferably, the lever anti-loose clip system 2 comprises a clip main body 201, a shaft hole seat 202, a central shaft hole 203 and an elastic piece 204. The buckle main body 201 is a plate-shaped structure. The shaft hole seat 202 is provided on the surface of the middle portion of the buckle main body 201. The central shaft hole 203 is opened on the shaft hole seat 202. The elastic member 204 is disposed on the upper surface of the buckle main body 201 and located at one side of the shaft hole seat 202.

Preferably, the elastic element 204 is one of a spring, a spring plate, and an elastic gel.

Preferably, the lever anti-loose snap system 2 further comprises a force-bearing protrusion 205 and a fixing protrusion 206. The force receiving protrusion 205 and the fixing protrusion 206 are respectively disposed on the surfaces of the snap body 201 on both sides of the shaft hole seat 202. The bottom end of the elastic member 204 is sleeved on the fixing protrusion 206. The opening direction of the central shaft hole 203 is perpendicular to the connecting line direction of the force-bearing protrusion 205 and the fixing protrusion 206.

Preferably, two side surfaces of the buckle main body 201 in the opening direction of the central shaft hole 203 are arc-shaped surfaces.

Preferably, the nut body 101 further includes a fixing groove 108 therein. The fixing groove 108 is formed on the top surface of the inner cavity of the accommodating chamber 105. The axis of the fixing groove 108 and the axis of the fixing protrusion 206 are located on the same vertical line. The top end of the elastic member 204 is inserted into the fixing groove 108.

Preferably, a tightening mechanism 109 is further provided on the upper surface of the nut body 101. The tightening mechanism 109 is a protrusion and/or a groove.

Preferably, the device further comprises a tightening device 4. The tightening device 4 is installed at the upper end of the anti-loosening nut 1. The tightening device 4 includes a handle 401, a tightening head 402, a tightening portion 403, and a through-rod 404. The tightening head is of an annular columnar structure. One end of the handle 401 is fixed to the outer side wall of the tightening head 402. The tightening part 403 and the through rod 404 are both arranged on the lower ring surface of the tightening head 402.

Preferably, the device further comprises a spacer 5. The washer 5 is disposed between the fastener 6 and the anti-loosening nut 1. The gasket 5 is of an annular cylindrical structure. The gasket 5 is fixed on the fastener 6, and the gasket 5 is provided with an anti-loosening clamping groove 501 matched with the buckle main body 201.

Preferably, the fastening member 6 is provided with a fixing slot 601 matching with the buckle main body 201, and the fixing slot 601 is vertically overlapped with the anti-loosening slot 501.

Preferably, the tightening part 403 is a protrusion and/or a groove.

Preferably, a protrusion-groove type anti-loosening combined structure is arranged between the bolt 3 and the fastener 6.

Example 1

As shown in fig. 2, the lever type anti-loosening nut 1 comprises a nut body 101, a threaded hole 102 and an internal thread 103. The threaded hole 102 is provided in the nut body 101. The internal thread 103 is provided on the inner wall of the threaded hole 102. The method is characterized in that: the anti-loosening nut 1 further comprises a through hole 104 and an accommodating cavity 105. The through hole 104 is opened in the upper surface of the nut body 101. The receiving cavity 105 is opened on the lower surface of the nut body 101. The bottom end of the through hole 104 is communicated with the top end of the accommodating cavity 105. The through hole 104 and the accommodating cavity 105 are both located in the nut body 101 between the inner wall of the threaded hole 102 and the outer wall of the nut body 101. The accommodating cavity 105 is also internally provided with a lever anti-loose buckling system 2.

Example 2

As shown in fig. 1, a lever type anti-loose nut and bolt fastening device includes an anti-loose nut 1 and a bolt 3. The anti-loose nut 1 is assembled with the bolt 3 through an internal thread 103. The anti-loosening nut 1 comprises a nut body 101, a threaded hole 102 and an internal thread 103. The threaded hole 102 is provided in the nut body 101. The internal thread 103 is provided on the inner wall of the threaded hole 102. The bolt 3 comprises a nut 301, a shank 302 and an external thread 303. The nut 301 is disposed at one end of the screw 302. The external thread 303 is provided on the outer surface of the screw 302. The anti-loosening nut 1 further comprises a through hole 104 and an accommodating cavity 105. The through hole 104 is opened in the upper surface of the nut body 101. The receiving cavity 105 is opened on the lower surface of the nut body 101. The bottom end of the through hole 104 is communicated with the top end of the accommodating cavity 105. The through hole 104 and the accommodating cavity 105 are both located in the nut body 101 between the inner wall of the threaded hole 102 and the outer wall of the nut body 101. The accommodating cavity 105 is also internally provided with a lever anti-loose buckling system 2.

Example 3

Example 2 is repeated except that the device further comprises a stationary shaft hole 106 and a shaft 107. The fixing shaft holes 106 are formed on two opposite side walls of the accommodating cavity 105. Two ends of the shaft rod 107 are respectively fixed in the fixing shaft holes 106 of two opposite side walls of the accommodating cavity 105. The lever locking clip system 2 is installed in the accommodating cavity 105 through the fixing shaft hole 106 and the shaft rod 107, and the lever locking clip system 2 can rotate freely by taking the shaft rod 107 as a rotating shaft.

Example 4

As shown in fig. 4, embodiment 3 is repeated except that the lever anti-loose clip system 2 includes a clip main body 201, a shaft hole seat 202, a central shaft hole 203, and an elastic member 204. The buckle main body 201 is a plate-shaped structure. The shaft hole seat 202 is provided on the surface of the middle portion of the buckle main body 201. The central shaft hole 203 is opened on the shaft hole seat 202. The elastic member 204 is disposed on the upper surface of the buckle main body 201 and located at one side of the shaft hole seat 202.

Example 5

Example 4 is repeated except that the elastic member 204 is a spring.

Example 6

As shown in FIG. 5, embodiment 5 is repeated except that the lever anti-loose snap system 2 further comprises a force-receiving protrusion 205 and a fixing protrusion 206. The force receiving protrusion 205 and the fixing protrusion 206 are respectively disposed on the surfaces of the snap body 201 on both sides of the shaft hole seat 202. The bottom end of the elastic member 204 is sleeved on the fixing protrusion 206. The opening direction of the central shaft hole 203 is perpendicular to the connecting line direction of the force-bearing protrusion 205 and the fixing protrusion 206.

Example 7

Embodiment 6 is repeated except that two side surfaces of the buckle main body 201 in the opening direction of the central shaft hole 203 are arc-shaped surfaces.

Example 8

As shown in fig. 4, embodiment 7 is repeated except that a fixing groove 108 is further included in the nut body 101. The fixing groove 108 is formed on the top surface of the inner cavity of the accommodating chamber 105. The axis of the fixing groove 108 and the axis of the fixing protrusion 206 are located on the same vertical line. The top end of the elastic member 204 is inserted into the fixing groove 108.

Example 9

As shown in fig. 8, example 8 is repeated except that the upper surface of the nut main body 101 is further provided with a tightening mechanism 109. The tightening mechanism 109 is a groove.

In the light of the above example 10,

as shown in fig. 6, example 9 is repeated except that the device further comprises a tightening device 4. The tightening device 4 is installed at the upper end of the anti-loosening nut 1. The tightening device 4 includes a handle 401, a tightening head 402, a tightening portion 403, and a through-rod 404. The tightening head is of an annular columnar structure. One end of the handle 401 is fixed to the outer side wall of the tightening head 402. The tightening part 403 and the through rod 404 are both arranged on the lower ring surface of the tightening head 402.

Example 11

As shown in fig. 8-9, the embodiment 10 is repeated except that the device further comprises a spacer 5. The washer 5 is disposed between the fastener 6 and the anti-loosening nut 1. The gasket 5 is of an annular cylindrical structure. The gasket 5 is fixed on the fastener 6, and the gasket 5 is provided with an anti-loosening clamping groove 501 matched with the buckle main body 201.

Example 12

As shown in fig. 10, the embodiment 11 is repeated, except that the fastening member 6 is provided with a fixing slot 601 matching with the buckle main body 201, and the fixing slot 601 is vertically overlapped with the anti-loosening slot 501.

Example 13

Example 12 was repeated except that the tightening part 403 was a protrusion.

Example 14

Example 13 is repeated except that a projection-recess anti-loosening combination is provided between the bolt 3 and the fastener 6.

Claims

1. The utility model provides a locking nut that moves of lever which characterized in that: the anti-loosening nut (1) comprises a nut body (101), a threaded hole (102) and an internal thread (103); the threaded hole (102) is arranged on the nut main body (101); the internal thread (103) is arranged on the inner wall of the threaded hole (102); the method is characterized in that: the anti-loosening nut (1) further comprises a through hole (104) and an accommodating cavity (105); the through hole (104) is formed in the upper surface of the nut body (101); the accommodating cavity (105) is formed in the lower surface of the nut body (101); the bottom end of the through hole (104) is communicated with the top end of the accommodating cavity (105); the through hole (104) and the accommodating cavity (105) are both positioned in the nut main body (101) between the inner wall of the threaded hole (102) and the outer wall of the nut main body (101); and a lever anti-loosening buckling system (2) is further arranged in the accommodating cavity (105).

2. The utility model provides a locking nut of moving of lever, bolt fastener which characterized in that: the device comprises an anti-loosening nut (1) and a bolt (3); the anti-loosening nut (1) is assembled with the bolt (3) through an internal thread (103); the anti-loosening nut (1) comprises a nut body (101), a threaded hole (102) and an internal thread (103); the threaded hole (102) is arranged on the nut main body (101); the internal thread (103) is arranged on the inner wall of the threaded hole (102); the bolt (3) comprises a nut (301), a screw (302) and an external thread (303); the screw cap (301) is arranged at one end of the screw rod (302); the external thread (303) is arranged on the outer surface of the screw rod (302); the anti-loosening nut (1) further comprises a through hole (104) and an accommodating cavity (105); the through hole (104) is formed in the upper surface of the nut body (101); the accommodating cavity (105) is formed in the lower surface of the nut body (101); the bottom end of the through hole (104) is communicated with the top end of the accommodating cavity (105); the through hole (104) and the accommodating cavity (105) are both positioned in the nut main body (101) between the inner wall of the threaded hole (102) and the outer wall of the nut main body (101); and a lever anti-loosening buckling system (2) is further arranged in the accommodating cavity (105).

3. A lever type loosening prevention nut and bolt fastening device as claimed in claim 1 or 2, wherein: the device also comprises a fixed shaft hole (106) and a shaft lever (107); the fixed shaft holes (106) are formed in two opposite side walls of the accommodating cavity (105); two ends of the shaft lever (107) are respectively fixed in the fixed shaft holes (106) of the two opposite side walls of the accommodating cavity (105); the lever anti-loose buckling system (2) is arranged in the accommodating cavity (105) through the fixed shaft hole (106) and the shaft lever (107), and the lever anti-loose buckling system (2) can rotate freely by taking the shaft lever (107) as a rotating shaft.

4. A lever type loosening prevention nut and bolt tightening device as claimed in any one of claims 1 to 3, wherein: the lever anti-loose buckle system (2) comprises a buckle main body (201), a shaft hole seat (202), a central shaft hole (203) and an elastic piece (204); the buckle main body (201) is of a plate-shaped structure; the shaft hole seat (202) is arranged on the surface of the middle part of the buckle main body (201); the central shaft hole (203) is formed in the shaft hole seat (202); the elastic piece (204) is arranged on the upper surface of the buckle main body (201) and is positioned on one side of the shaft hole seat (202);

preferably, the elastic element (204) is one of a spring, a spring piece and an elastic colloid.

5. A lever type loosening prevention nut and bolt tightening device as claimed in claim 4, wherein: the lever anti-loose buckle system (2) further comprises a stress bulge (205) and a fixing bulge (206); the stress bulge (205) and the fixing bulge (206) are respectively arranged on the surfaces of the buckle main body (201) on two sides of the shaft hole seat (202); the bottom end of the elastic piece (204) is sleeved on the fixed bulge (206); the opening direction of the central shaft hole (203) is vertical to the connecting line direction of the stress bulge (205) and the fixed bulge (206);

preferably, the front and rear side surfaces of the buckle main body (201) in the opening direction of the central shaft hole (203) are arc surfaces.

6. A lever type loosening prevention nut and bolt tightening device as claimed in claim 5, wherein: the nut body (101) also comprises a fixing groove (108); the fixed groove (108) is formed in the top surface of the inner cavity of the accommodating cavity (105); the axis of the fixing groove (108) and the axis of the fixing protrusion (206) are positioned on the same vertical line; the top end of the elastic piece (204) is embedded into the fixing groove (108); and/or

The upper surface of the nut main body (101) is also provided with a tightening mechanism (109); the tightening mechanism (109) is a protrusion and/or a groove.

7. A lever type loosening prevention nut and bolt tightening device as claimed in any one of claims 1 to 6, wherein: the device also comprises a tightening device (4); the tightening device (4) is arranged at the upper end of the anti-loosening nut (1); the tightening device (4) comprises a handle (401), a tightening head (402), a tightening part (403) and a through rod (404); the tightening head is of an annular columnar structure; one end of the handle (401) is fixed on the outer side wall of the tightening head (402); the tightening part (403) and the through rod (404) are both arranged on the lower annular surface of the tightening head (402).

8. A lever type loosening prevention nut and bolt tightening device as claimed in any one of claims 1 to 7, wherein: the device further comprises a gasket (5); the gasket (5) is arranged between the fastening piece (6) and the anti-loosening nut (1); the gasket (5) is of an annular columnar structure; the gasket (5) is fixed on the fastener (6), and the gasket (5) is provided with an anti-loosening clamping groove (501) matched with the buckle main body (201).

9. A lever type loosening prevention nut and bolt fastening device as claimed in claim 8, wherein: the fastener (6) is provided with a fixed clamping groove (601) matched with the buckle main body (201), and the fixed clamping groove (601) is overlapped with the anti-loosening clamping groove (501) in the vertical direction.

10. A lever type loosening prevention nut and bolt tightening device as claimed in any one of claims 7 to 9, wherein: the tightening part (403) is a protrusion and/or a groove; and/or

And a protrusion-groove type anti-loosening combined structure is arranged between the bolt (3) and the fastener (6).