35results about How to "Guaranteed anti-loose performance" patented technology

The invention discloses a check bolt with left-handed threads, which comprises a nut (1) with left-handed threads, a standard nut (2) and a screw stem (3). Reverse threads are arranged at one end of the screw stem (3). After being screwed down by the standard nut (2), a component is screwed down by the nut with the left-handed threads, the nut (1) is closely attached to the nut (2), accordingly, if the nut (2) is loosened, the nut (2) can drive the nut (1) to rotate in the same direction, the direction is the screw-in direction of the nut (1) with left-handed threads, accordingly, loosening of the nut (2) is prevented, and the purpose of preventing the bolt from being loosened is achieved.

The invention provides a self-locking fastening set which mainly solves the problem that in the prior art, a fastener is likely to get loose in the vibration environment and consequently connection looseness is caused. The self-locking fastening set comprises a bolt, an inner nut and an outer nut, wherein the outer nut is provided with a fastener locked to the lower end face of the inner nut, the outer nut is sequentially provided with a first hole, a second hole and a threaded hole from top to bottom, the fastener is arranged in the second hole, a thread column is arranged in the threaded hole, and a spiral spring is arranged between the thread column and the fastener; the thread column is rotated, so that the upper end of the fastener stretches out of the first hole and is locked to the lower end face of the inner nut in a tightly attached mode, and the outer nut is effectively prevented from getting loose, and the anti-looseness effect is improved; in combination with an accompanying drawing, optimization modes for two kinds of fasteners including steel balls and stepped cylinders are detailed. The self-locking fastening set is simple in structure, can effectively prevent the outer nut from getting loose and provides reliable fastening connection.

The invention discloses a bolt stopping part and a stopping method, and relates to the technical field of fastening parts. The stopping part comprises a stopping gasket with bolt holes, the stopping gasket is further provided with stopping holes used for allowing the corners of bolt heads to be arranged in a sleeved mode, the stopping holes are located between the bolt holes and the gasket corners, close to the bolt holes, of the stopping gasket, the gasket corners are folded upwards, the hole edges of the stopping holes are closely attached to the bolt heads, the gasket corners are pressed onthe upper end faces of the bolt heads, and then stopping is achieved. According to the bolt stopping part and the stopping method, the problem that the bolt loosening preventing effect of an existingbolt stopping part is poor is solved.

The invention discloses an anti-loosening bolt, and relates to the technical field of bolts. The anti-loosening bolt comprises a screw rod and a nut. The anti-loosening bolt further comprises an anti-loosening piece which is assembled on the screw rod and inserted with the nut and used for abutting against the nut when the nut is loosened so as to avoid the loosening phenomenon. The side, close tothe anti-loosening piece, of the nut is provided with a slot, and the side, far away from the anti-loosening piece, of the nut is provided with a threaded part matched with the screw rod. The side, close to the slot, of the anti-loosening piece is provided with an inserting part, the inserting part is used for inserted into the slot for assembling, and the side, far away from the inserting part,of the anti-loosening piece is provided with a rotating head used for screwing the anti-loosening piece. Due to the adoption of the anti-loosening bolt of the technical scheme, through the arranged anti-loosening piece, when the nut is loosened, the nut is extruded to one side of the screw rod to enable the inner wall of the nut to abut against the screw rod, so that the nut moves more and more tightly, and the anti-loosening bolt has the advantages of being simple in structure, ingenious in design, convenient to disassemble and assemble and good in anti-loosening effect.

The invention discloses an anti-loosening nut capable of realizing a function of higher tightness during stronger vibration. The anti-loosening nut comprises a flange nut and a concave nut, wherein the flange nut and the concave nut are tightened to a bolt in an overlapped mode and locked by tightening pieces, a concave nut main body is a hexagonal head nut with a flange, and an internal thread tapping alignment mark A is arranged on the side surface of the concave nut, and a concave structure, an anti-loosening wedge-shaped surface A and a tightening in-place chamfer mark A are arranged on the same end surface of the concave nut main body; and a flange nut main body is a hexagon head nut, an internal thread tapping alignment mark B is arranged on the side surface of the flange nut main body, and a flange structure, an anti-loosening wedge-shaped surface B and a tightening in-place chamfer mark B are arranged on the same end surface of the flange nut main body. According to the anti-loosening nut, when a concave nut and flange nut assembly piece of the anti-loosening nut is tightened to the bolt and the tightening pieces, the structures such as an anti-loosening wedge-shaped structure, a tenon and mortise joint structure with the flange matched with a concave shape, ratchet wheel structures, and an asynchronous internal screw thread and bolt screw thread structure of the anti-loosening nut act together, and under the conditions such as strong or long-term vibration, the higher tightness can be achieved during the stronger vibration (commonly known as never loosening), and the anti-loosening function of the anti-loosening nut is still reliable and effective in a severe environment.

The invention discloses a novel lock nut which comprises a nut body. A threaded hole is formed in the nut body. The nut further comprises two L-shaped rotary blocks, the bottom of the I portion of each L-shaped rotary block is a circular bead, the inner end face of the - portion of each L-shaped rotary block is provided with multiple protrusions, the nut body is symmetrically provided with two horizontal grooves communicated with the outside, the nut body is further provided with vertical containing grooves communicated with the horizontal grooves, the I portion of each L-shaped rotary blocks are is contained in the corresponding containing groove, the width of the horizontal grooves is larger than the width of the L-shaped rotary blocks, the I portions of the L-shaped rotary blocks can slide up and down in the containing grooves and can turn over downward after sliding to the highest position, and the - portion of each L-shaped rotary block comprises a fixing block, a connection block and a cylinder. When not used, the novel lock nut has no difference with a commonly used nut, and the lock nut is little in occupied space, convenient to carry and use, capable of being used as common nuts and multifunctional.

The invention relates to an anti-loose high-pressure oil plug. The oil plug (1) is rotatably connected to an oil path block (2), and the oil plug (1) is sleeved with a check ring (3) in contact with the oil path block (2) in an abutting manner; the check ring (3) is fixedly arranged on the oil path block (2) and comprises a pressing plate (31) compressed on the upper surface of the oil plug (1); and a protruding ring (32) is arranged on the lower surface of the pressing plate (31) in a protruding manner, and forms blocking to the side face of the oil plug (1). Through the arrangement of the check ring and the pressing plate, the pressing plate tightly presses the oil plug from the upper portion, and the pressing plate is tightly fixed to the oil path block through the check ring, so that the anti-loose effect is forcefully ensured; and due to the arrangement of the protruding ring, the protruding ring blocks the oil plug, and in the working process, the oil path cannot generate lateral movement.

The invention provides a method for preventing looseness through the bolt length-diameter ratio. The mounting environment of a bolt is changed, the bolt mounting effective length is adjusted, the boltlength-diameter ratio is adjusted, and in the bolt use process, the looseness prevention aim is achieved; and the effective length of the mounting bolt is the absolute thickness of a workpiece fastened through the bolt. The method is different from a traditional friction anti-looseness, mechanical anti-looseness and permanent anti-looseness method, looseness prevention is achieved by increasing the bolt length, the machining difficulty is reduced, the number of used parts is small, and assembling is easy.

The invention discloses an elastic locking bolt. A bolt body is formed by connecting a bolt head with a screw, horizontal through grooves are formed in the upper surface of the bolt head, a round corner is formed at the bottom of an I portion of each of two L-shaped rotating blocks, multiple protrusions are arrayed on the inner end face of a - portion of each L-shaped rotating block, containing grooves are formed in the screw and communicated with the horizontal through grooves, the I portions of the L-shaped rotating blocks are close to each other and contained in the containing grooves, a gap is reserved between the lower end of each protrusion and the bottom of the corresponding horizontal through groove, the I portions of the L-shaped rotating blocks can slide up and down in the containing grooves and can overturn downwards when upwards sliding to the highest positions, and the - portion of each L-shaped rotating block comprises a fixing block, a connecting block and an elastic part. The elastic parts can support the protrusions to contact with the surfaces of two sides of a plate so as to maintain contact force and friction force between the protrusions and the surfaces of the two sides, and the elastic locking bolt is small in occupied space and convenient to carry and use.

The invention discloses an elastic locking nut which comprises a nut body and two L-shaped rotating blocks. A threaded hole is formed in the nut body, a round corner is formed at the bottom of an I portion of each L-shaped rotating block, multiple protrusions are arranged on the inner end face of a - portion of each L-shaped rotating block in an array manner, two horizontal grooves are formed symmetrically in the nut body and communicated with the outside, vertical containing grooves communicated with the horizontal grooves are formed in each nut body, the I portion of each L-shaped rotating block is contained in the corresponding containing groove, width of each horizontal groove is larger than that of each L-shaped rotating block, the I portion of each L-shaped rotating block can slide up and down in the corresponding containing groove and can overturn downwards when sliding to the highest position, and the - portion of each L-shaped rotating block comprises a fixing block, a connecting block and an elastic part. The elastic locking nut is similar to a nut which is generally used at ordinary times when not in use, small in occupied space, convenient to carry and use, capable of serving as a common nut and multipurpose.

The invention discloses a novel automatic check nut. The novel automatic check nut comprises a nut body and two L-shaped rotating blocks, wherein a threaded hole is formed in the nut body; the bottom of the vertical part of each L-shaped rotating block is a fillet; the inner end face of the horizontal part of each L-shaped rotating block is provided with multiple protrusions arranged in an array; the nut body is symmetrically provided with two horizontal grooves; the nut body is provided with vertical containing grooves; a first air cylinder is arranged at the bottom of each containing groove, and a telescopic rod of the first air cylinder extends upwards; a push block is arranged at the end of the telescopic rod of each first air cylinder; the vertical part of each L-shaped rotating block is contained in one containing groove; the width of each horizontal groove larger than the width of each L-shaped rotating block; the vertical part of each L-shaped rotating block can slide up and down in the corresponding containing groove; the horizontal part of each L-shaped rotating block comprises a fixed block, a connecting block and second air cylinders. The novel automatic check nut occupies a small space when not used, is convenient to carry and use, can also be used as a common nut and has multiple functions.

The invention provides a split type locking bolt. The locking bolt comprises a main bolt, an auxiliary stud, an inner jacking screw and a locking positioning device. The auxiliary stud is connected with a threaded hole in a base plate; the main bolt penetrates through an assembling hole in an assembling plate to be connected with the threaded hole in the base plate; the inner jacking screw penetrates through the main bolt to be connected with the auxiliary stud; and the locking positioning device is arranged in the inner jacking screw. Fastening and self-locking of the bolt are achieved in themode that the main bolt and the auxiliary stud are installed in the base plate and the inner jacking screw penetrates through the main bolt to be in reverse threaded connection with the auxiliary stud, the bolt can be applied to the situation that the base plate is thick and can only be fastened through a counter bore, repeated dismounting, mounting and utilization can be achieved, the using costis effectively reduced, the practicability is high, and the wideness of application is improved.

A detachable anti-loosening bolt, comprising: a main bolt, an auxiliary stud, an inner top screw and an anti-loosening positioning device; the auxiliary stud is connected to a threaded hole on a base plate, and the main bolt passes through the assembly hole of the assembly plate The threaded holes on the base plate are connected; the inner top screw passes through the main bolt to connect with the auxiliary stud, and the anti-loosening positioning device is arranged in the inner top screw; the present invention installs the main bolt and the auxiliary stud into the base plate, and the inner The top screw passes through the main bolt and the auxiliary stud is reversely threaded to realize the fastening and self-locking of the bolt, which is not only suitable for the case where the base plate is thick and can only be fastened by counterbore, but also can be disassembled repeatedly Utilization can effectively reduce the cost of use and improve the application breadth.

The invention discloses an automatic elastic locking bolt. The automatic elastic locking bolt is characterized in that an accommodating groove is formed in a screw; the accommodating groove is communicated with a horizontal straight slot; a cylinder is arranged at the bottom of the accommodating groove, and a telescopic rod of the cylinder extends upwardly; a push block is arranged at an end of the telescopic rod of the cylinder; a switch for controlling the cylinder is arranged on the upper surface of a bolt head; 'I'-shaped portions of 'L'-shaped rotary blocks are accommodated in the accommodating groove, and the bottoms of the 'I'-shaped portions of the 'L'-shaped rotary blocks are in contact with the push block; gaps are reserved between the lower ends of protrusions and the bottom of the horizontal straight slot; the 'I'-shaped portions of the two 'L'-shaped rotary blocks can slide up and down in the accommodating groove; the 'I'-shaped portions of the two 'L'-shaped rotary blocks can be downwardly turned over when upwardly sliding to the highest positions; 'horizontal' portions of the 'L'-shaped rotary blocks comprise fixing blocks, connecting blocks and elastic components. The automatic elastic locking bolt has the advantages that the protrusions can be supported by the elastic components to be in contact with the surfaces of two sides of a plate, contact force and friction force of the protrusions and the surfaces of the two sides of the plate can be kept, and the automatic elastic locking bolt is small in occupied space and convenient to use and is portable.

The invention discloses a device for preventing a nut from loosening. The device comprises the nut, a rotary shaft and a top cap, wherein the nut is of a hollow cylindrical structure; a first tooth-shaped structure is arranged on an inner wall of the nut; a positioning column is arranged on the top end of the rotary shaft; a hole is formed in one side of the positioning column; a top bead is arranged in the hole; a spring plate is arranged under the top bead; the top cap is of a cylindrical structure; a circle of second tooth-shaped structure matched with the first tooth-shaped structure is arranged on a circumferential surface; a square-shaped hole is formed in one side, facing the nut, of the top cap; a groove is formed in a hole wall of the square-shaped hole; the positioning column ofthe rotary shaft is inserted from one end of a screw cap so as to be arranged in the square-shaped hole; and the top bead is matched with the groove. According to the device for preventing the nut from loosening provided by the invention, through the tight installation coordination of the rotary shaft, the screw cap and the top cap, a rubber covered roller is ensured to be stressed by a constraining force of the nut so as to be prevented from separating during a mechanical rotating process, and the top cap ensures the relative rotation of the nut and the rotary shaft, so that the anti-looseness of the device is ensured.

The invention discloses a bolt set not prone to loosening. The bolt set comprises a bolt, a main nut, an auxiliary nut, a fixing ring, a first limiting groove, a second limiting groove and a limitingplate, the bolt is composed of a bolt head and a stud, the stud is fixed to the bottom of the bolt head, the main nut is screwed on the stud, and the fixing ring is fixed to the bottom of the main nut; and external threads are arranged on the outer wall of the fixing ring, the auxiliary nut is screwed on the fixing ring, an auxiliary ring is arranged on the inner wall of the auxiliary nut, the inner diameter of the auxiliary ring is slightly larger than the outer diameter of the stud, and a plurality of first limiting grooves are formed in the stud. According to the bolt set, a first limitinggroove, a second limiting groove and a limiting plate are matched, so that the main nut and the stud are not prone to relative rotation after the bolt set is installed, the bolt set is not prone to looseness, and the connection reliability is guaranteed.

The invention discloses a novel lock bolt. A containing groove is formed in a screw rod and is communicated with a horizontal through groove, the I portions of two L-shaped rotary blocks abut against each other and are contained in the containing groove, a gap is reserved between the lower end of a protrusion and the bottom of the horizontal through groove, the I portions of the two L-shaped rotary blocks can slide up and down in the containing groove, and when sliding upward to the highest position, the I portions of the two L-shaped rotary blocks can turn over downward. The - portion of each L-shaped rotary block comprises a fixing block, a connection block and a cylinder, and the upper surface of a bolt head is provided with a switch controlling the cylinders. The novel lock bolt prevents the protrusion from being abraded or damaged, the stretching force of the cylinders can guarantee the contact force and the friction force between the protrusion and the surfaces of two sides, the occupied space is little, and the bolt is convenient to carry and use.

The invention provides a self-locking fastening set which mainly solves the problem that in the prior art, a fastener is likely to get loose in the vibration environment and consequently connection looseness is caused. The self-locking fastening set comprises a bolt, an inner nut and an outer nut, wherein the outer nut is provided with a fastener locked to the lower end face of the inner nut, the outer nut is sequentially provided with a first hole, a second hole and a threaded hole from top to bottom, the fastener is arranged in the second hole, a thread column is arranged in the threaded hole, and a spiral spring is arranged between the thread column and the fastener; the thread column is rotated, so that the upper end of the fastener stretches out of the first hole and is locked to the lower end face of the inner nut in a tightly attached mode, and the outer nut is effectively prevented from getting loose, and the anti-looseness effect is improved; in combination with an accompanying drawing, optimization modes for two kinds of fasteners including steel balls and stepped cylinders are detailed. The self-locking fastening set is simple in structure, can effectively prevent the outer nut from getting loose and provides reliable fastening connection.

The invention discloses a novel automatic check nut. The novel automatic check nut comprises a nut body and two L-shaped rotating blocks, wherein a threaded hole is formed in the nut body; the bottom of the vertical part of each L-shaped rotating block is a fillet; the inner end face of the horizontal part of each L-shaped rotating block is provided with multiple protrusions arranged in an array; the nut body is symmetrically provided with two horizontal grooves; the nut body is provided with vertical containing grooves; a first air cylinder is arranged at the bottom of each containing groove, and a telescopic rod of the first air cylinder extends upwards; a push block is arranged at the end of the telescopic rod of each first air cylinder; the vertical part of each L-shaped rotating block is contained in one containing groove; the width of each horizontal groove larger than the width of each L-shaped rotating block; the vertical part of each L-shaped rotating block can slide up and down in the corresponding containing groove; the horizontal part of each L-shaped rotating block comprises a fixed block, a connecting block and second air cylinders. The novel automatic check nut occupies a small space when not used, is convenient to carry and use, can also be used as a common nut and has multiple functions.

The invention discloses an automatic elastic lock nut which comprises a nut main body and two L-shaped rotating blocks, wherein a threaded hole is formed in the nut main body; the bottoms of I-shaped parts of the L-shaped rotating blocks are arranged as circular corners; a plurality of bulges are arrayed on inner end faces of '-' shaped parts of the L-shaped rotating blocks; two horizontal slots are symmetrically formed in the nut main body; vertical accommodating slots are formed in the nut main body; a cylinder with an upward extending stretching rod is arranged at the bottom of each accommodating slot; a pushing block is arranged on an end part of the stretching rod of each cylinder; the I-shaped part of each L-shaped rotating block is accommodated in one accommodating slot; the width of the horizontal slots is greater than the width of the L-shaped rotating blocks; the I-shaped parts of the L-shaped rotating blocks can slide up and down in the accommodating slots; each of the '-' shaped parts of the L-shaped rotating blocks comprises a fixing block, a connecting block and an elastic part. When the automatic elastic lock nut provided by the invention is not used, the occupied space is small; the automatic elastic lock nut is conveniently taken and used; the automatic elastic lock nut can be used as a general nut and is multifunctional.