35results about How to "Easy to process and implement" patented technology

The invention discloses a deformation machining process for nickel based alloys and iron nickel based alloys, and is used for solving the technical problems that the deformation machining of the nickel based alloys and the iron nickel based alloys in a solid solution state lowers the amount of crystal boundary carbide precipitation of materials in subsequent aging or serving process, thereby reducing the endurance strength, and the nickel based alloys and the iron nickel based alloys are low in plasticity, high in strength, difficult to deform and easy to crack when being subjected to deformation machining in an aging state. The process is technically characterized in that the nickel based alloys and the iron nickel based alloys subjected to solid solution treatment are subjected to one relatively-high-temperature heat treatment, carbides are precipitated near a crystal boundary firstly and simultaneously the precipitation of intracrystalline gamma' or gamma'' phases is reduced, then the obtained objects are subjected to deformation machining until the objects reach the required shape and size of parts, and finally, the obtained products are subjected to aging treatment, so that both the process properties of materials in the stage of deformation machining are ensured, and the final endurance strength of products is ensured.

The invention discloses pig skin sponge body-building food with an appearance building effect. The body-building food is prepared by a series of treatment, including selecting various bacteria-free animal skins, mainly pig skin, removing hair from the pig skin, descaling and cleaning the pig skin, soaking and rinsing the descaled and cleaned pig skin by edible alum, drying the soaked and rinsed pig skin, cutting the dried pig skin into slices, strips and threads, and frying the slices, strips and threads by edible oil until the slices, strips and threads turn sallow for later use. Therefore, the pig skin does not contain or contains little fat, so collagen and elastin having wrinkle-removing, skin-smoothing and skin elasticity promoting effects can be better digested, absorbed and utilized by human body. The body-building food can be eaten in various ways: the body-building food can be eaten as fast food or snack according to individual interest, a cold vegetable dish in sauce, a fried dish or soup cooking hot pot with optionally adjustable taste. The body-building food is packaged in vacuum or hermetically packaged with a drier as a semi-finished product. The semi-finished product in a package is soaked in boiled warm water and is dehydrated to obtain a finished product. The finished product is blended and processed according to the way and the taste for eating.

The invention discloses an electric drill with the drill bit diameter being adjustable. The electric drill is composed of a machine body assembly, a clutch sliding sleeve, a hydraulic adjusting assembly and an expandable drill bit. The expandable drill bit is adopted, the thickness of the drill bit can be adjusted through the oil charging amount according to the requirements, stepless gradually varied adjustment can be achieved, the machining requirement of holes within a certain range is met, the drill bit does not needed to be replaced, the situation of infirm mounting due to frequent drill bit replacement is avoided, and the working safety is improved; an output shaft is used for providing power for the hydraulic adjusting assembly and the expandable drill bit, power switching is achieved through the clutch sliding sleeve, the adjustment difficulty of the expandable drill bit is lowered, operation is more convenient, rapid and convenient, the part utilization rate is increased to the maximum, an existing structure can still be used, the machine body assembly does not need to be modified, and machining implementation is easier.

The invention relates to a large view field staring type spectral imaging system and an imaging method thereof. A prepositioned object lens and a spectral imaging system of the large view field staring type spectral imaging system are in optical structures which mix refraction and reflection or diffraction and the prepositioned object lens combines gradation dividing and aperture dividing. The imaging method of the large view field staring type spectral imaging system comprises that the prepositioned object lens obtains a two-dimensional middle image with the uniform imaging performance from a huge view field; a multi-view-field, high performance and full-wave-band space image obtained through a multi-aperture sub-view-field and the further aberration fine correction is served as a target object of a follow-up spectral imaging system; aperture channels obtain images which are corresponding to spectrums inside the view field after dispersion light splitting and focus imaging which are performed through the spectral imaging system; images of spectrums in the full view field are obtained after fuse splicing. The large view field staring type spectral imaging system has the advantages of solving the problem that the time is inconsistent due to the fact that the spectral images are obtained through a traditional push and sweep mode and being large in view field, compact in structure, good in spectral imaging quality, strong in light concentrating capability, high in spectral resolution and applicable to aviation and spaceflight hyperspectral remote sensing imaging.

The invention discloses a tool clamp capable of automatically adjusting sizes. The tool clamp comprises a shell, a connecting rod and a first movable block, a limit plate is arranged in the shell, anda movable rod is installed on the inner side of the limit plate; a first spring wraps the outer side of the movable rod, the connecting rod is arranged at the bottom of the first spring, and a fixedplate is connected to the bottom of the connecting rod; a clamping plate is installed at the bottom of the fixed plate, slide blocks are arranged at the two ends of the clamping plate, and a skid resistance trace is embedded in the surface of the clamping plate; the first movable block is arranged on the outer side of the shell, a second spring is arranged in the first movable block, the top of the second spring is connected with a second movable block, and a connecting groove is reserved in the top of the movable rod. The tool clamp capable of automatically adjusting sizes can automatically adjust sizes of unmachined objects, and therefore the tool clamp can be suitable for machining the unmachined objects with different sizes.

The invention discloses an electric drill capable of adjusting the diameter of a drill bit. The electric drill comprises a machine body assembly, a clutch sliding sleeve, a hydraulic adjusting assembly and an expandable drill bit. Due to the adoption of the expandable drill bit, the thickness of the drill bit can be adjusted by using the oil mass according to the requirements, the stepless gradient adjustment can be realized, the processing requirement of aperture within a certain range is easily met without the replacement of the drill bit, the condition that the mounting is not firm due to frequent replacement of the drill bit is avoided, and the operation safety is improved; the hydraulic adjusting assembly and the expandable drill bit are powered by one output shaft; power switch is realized by the clutch sliding sleeve, and the adjusting difficulty of the expandable drill bit is reduced, so that the operation for the expandable drill bit is more convenient and quicker; the utilization rate of parts is improved to the maximum extent, so that the machine body assembly can use the existing structure without changing, and the processing and the implementation are realized more easily.

The invention discloses a method for building a waste tyre sand resisting dam and the waste tyre sand resisting dam. The waste tyre sand resisting dam is formed by piling up one to n waste tyre sand resisting layers gradually, wherein each sand resisting layer is formed by stacking a plurality of layers of waste tyre prestressed mesh sheets; each of the waste tyre prestressed mesh sheets is formed by combining a plurality of waste tyre prestressed belts; each of the waste tyre prestressed belts is formed when parallel steel stranded wires pass through each waste tyre; and two ends of each of the steel stranded wires are fixed on the outer edges of the outmost tyres of two ends respectively after each of the steel stranded wires applies prestress to each waste tyre. Through the method for building the waste tyre sand resisting dam and the waste tyre sand resisting dam, wastes can be recycled in low cost; the waste tyre sand resisting dam can be processed quickly, is low in cost, can be allocated and transported quickly, can be assembled or disassembled quickly and flexibly, is low in resource consumption and is high in strength and impact resistance; and a transverse anchor rod is arranged at the position where the inner side edge of each waste tyre sand resisting layer contacts sand to ensure that the waste tyre sand resisting dam is high in self-supporting strength, has a stable structure, cannot be loose and is durable in use.

The invention relates to a large field of view staring type spectral imaging system and an imaging method thereof. Its front objective lens and spectroscopic imaging system respectively adopt the optical structure of refraction and reflection / diffraction hybrid; After the multi-aperture field of view and further fine correction of aberrations, the obtained multi-field, high-performance, and full-band aerial image is used as the target of the subsequent spectroscopic imaging system. After dispersion and focusing imaging by the spectroscopic imaging system, each The aperture channel obtains the spectral image in the corresponding field of view, and after fusion and stitching, the spectral image of the entire field of view is obtained. The invention solves the problem of time inconsistency caused by using the traditional push-broom method to acquire spectral images, has the advantages of large field of view, compact structure, good spectral image quality, strong light collection ability, and high spectral resolution, and is suitable for aviation and aerospace Hyperspectral remote sensing imaging.

The invention relates to a metal radiation ceiling board. The metal radiation ceiling board comprises a metal pinch plate, sound insulation cotton, a radiating unit, a phase change energy storage material and a heat insulation layer. The radiating unit comprises a plurality of fins arranged in parallel. Each fin is internally provided with a penetration straight pipe in the length direction of the fin. The penetration straight pipes in the fins communicate through connecting pipes in sequence to form a channel allowing heat exchange fluid to circulate. Compared with the prior art, the connecting pipes in the metal radiation ceiling board are directly processed in the fins; each connecting pipe and the corresponding fin are of an integrated structure; contact thermal resistance caused by a traditional external coil is avoided, and the heat exchange effect is improved; and the metal radiation ceiling board has the advantages of high heat exchange efficiency and energy utilization rate, good in heat retaining capacity, low noise and the like.

A transparent projection film comprises a transparent base material layer and a lens layer, wherein the lens layer is compounded on the base material layer and comprises a plurality of prism units. The plurality of prism units are integrally formed or integrally connected, and hollow grooves are formed between the prism units; and each prism unit comprises a first side face, a second side face anda top face, wherein the top face is located between the first side face and the second side face and opposite to the base material layer. The transparent projection film mainly comprises the base material layer and the lens layer. When the surface of each prism unit is frosted, the transparent projection film can be used as a rear projection screen; and when a reflecting layer is arranged on thesurface of the prism unit, the transparent projection film can be used as a front projection screen. Compared with the prior art, the transparent projection film is very simple in structure and very easy to process and implement, and can achieve a projection effect basically similar to that of an existing projection screen, so that the transparent projection film has very high industrial application value and very high practicability.

The invention discloses an internet remote medical training or meeting system. After improvement, the system is provided with both a main display screen and an auxiliary display screen, multi-positionsynchronous display can be achieved, the main display screen can move back and forth on two main display screen movable guide rails, the best display distance is obtained after regulation, and the normal distance viewing can be achieved for all conferees; on the other hand, each set of auxiliary display screens are movably arranged inside a meeting room through stand columns, the position of eachset of auxiliary display screens is rotatable for achieving display at different angles; during operation after improvement, the conferees in the meeting room can obtain pattern information obtainedthrough remote speaking, image information of a spokesman in the meeting room can be known, the attention of the conferees is improved, and therefore the remote medical training or meeting quality isimproved.

The invention discloses a batch compounding method of double-frequency intelligent labels, which comprises the following operation procedures: S10) conveying an ultrahigh-frequency intelligent label film by adopting an ultrahigh-frequency intelligent label unwinding mechanism, and conveying the ultrahigh-frequency intelligent label film by adopting a high-frequency intelligent label unwinding mechanism; s20), enabling the first composite roller and the second composite roller to perform roller-to-roller motion; before the the roll-to-roll motion is carried out, enabling the roll-to-roll contact surface of the ultrahigh-frequency intelligent label film and / or the high-frequency intelligent label film to be an adhesive surface through a stripping process or a gluing process, and then compounding the high-frequency intelligent label in a blank area on the ultrahigh-frequency intelligent label through the roll-to-roll motion; s30) obtaining the double-frequency intelligent label through rolling. The invention provides an ultrahigh frequency antenna structure with a specific shape, the ultrahigh frequency antenna structure can be directly applied on a large scale, and the double-frequency intelligent tag can be directly obtained on a large scale after batch compounding and die cutting of a surface tag and a bottom tag are directly carried out through the double-frequency intelligenttag without causing inconvenience to a subsequent application compounding process.

The invention discloses an anti-loosening and anti-rotation structure for threaded connection. The structure comprises a connecting outer sleeve, a connecting inner sleeve and anti-rotation reeds, wherein an inner surface of one end of the connecting outer sleeve is provided with a number of grooves that are arranged on the same circumference, the grooves are the same in structure, and each groove is provided with three arcs that are different in radius; along a clockwise screw thread engagement direction, a first arc is far greater than a third arc in radius; an outer surface of the connecting inner sleeve is provided with a number of gaps that are arranged on the same circumference, an inner part of each gap is provided with an anti-rotation reed, and each anti-rotation reed corresponds to a groove on the inner surface of the connecting outer sleeve; when a connector plug head is plugged in a plug seat, easy rotation can be realized in the presence of resistance due to a large radius of the first arc in each groove of the connecting inner sleeve and a smooth chamfer; after the plug head is screwed, great resistance of the anti-rotation reeds is met when a product operates in a vibration environment due to a small radius of the second arc in each groove of the connecting inner sleeve, and therefore a connector can be prevented from loosening and can be protected.

The invention discloses a transmission mechanism of a cyclone type milling machine. The transmission mechanism comprises a rotating body, a force input transmission assembly, a middle transmission assembly and a force output transmission assembly. The rotating body is provided with a base part and a connecting shaft part, and the force input transmission assembly is provided with a force input shaft connected with a motor power output shaft and a transmission gear A sleeving the connecting shaft part and meshing with one shaft end of the force input shaft. The middle transmission assembly is provided with a transition shaft mounted on the base part, a transition gear disposed on the positive side of the base part and rotatably mounted on the transition shaft, a fixed gear ring sleeving theconnecting shaft part at an interval and meshing with the transition gear, and a transmission gear C connected to the base part and meshing with the fixed gear ring. The force output transmission assembly is provided with a force output shaft connected with the transmission gear C and a transmission gear B in transmission connection with a milling cutter, and the transmission gear B also sleevesone shaft end of the force output shaft. Application of the transmission mechanism of the cyclone type milling machine is close to actual working conditions, the integrity, smoothness and machining quality of the surface of a casting blank can be effectively guaranteed, and the cutter loss is effectively reduced.

The invention discloses an automotive transmission shaft installing and fixing structure which comprises a transmission shaft fixing cross beam fixed to the lower surface of a front floor. The transmission shaft fixing cross beam is composed of a cross beam body and a transmission shaft fixing seat welded and fixed to the outer surface of the cross beam body. A reinforcing cross beam symmetrical to the transmission shaft fixing cross beam in position is welded and fixed to the upper surface of the front floor. The automotive transmission shaft installing and fixing structure has better rigidity and intensity and can meet the requirements for bearing capacity and fixing reliability.

The invention relates to an automatic gas diluter. An output shaft of a motor is in transmission connection with a turbine in a wind turbine room upwards; a hanging buckle is arranged above the wind turbine room; a storage battery casing is fixed at the lower part of the motor; and gas concentration sensors are respectively installed on the storage battery casing and a wind turbine room casing. The automatic gas diluter is simple in structure, is easy to process and implement, has low production cost, is convenient to use, is portable and can move at any time along with the movement of an upper corner. The automatic gas diluter has the effects of automatic detection and automatic startup ventilation, is provided with a storage battery for providing the power and can hermetically treat each electrical contact, thereby being safe and practical and having good sealing performance and safety.

The invention discloses a soil-retaining dam which is formed by combining waste tyres, and a construction method thereof. A dam body is formed by stacking a plurality of layers of waste tyre prestressed mesh sheets; each of the waste tyre prestressed mesh sheets is formed by combining a plurality of waste tyre prestressed belts; each of the waste tyre prestressed belts is formed when parallel steel stranded wires pass through each waste tyre; two ends of each of the steel stranded wires are fixed on the outer edges of the outmost tyres of two ends respectively after each of the steel stranded wires applies prestress to each waste tyre; nodes are arranged on the prestressed steel stranded wires on the inner side of the dam body; a steel rope is fixedly arranged on each node; and each steel rope is pulled towards the upstream of a channel obliquely along a counter current direction and is fixed at a dam slope of a dam foundation. Through the soil-retaining dam and the construction method thereof, wastes can be recycled in low cost; the soil-retaining dam is suitable to be processed on site quickly so as to meet the requirements in emergencies, is high in strength and impact resistance, has a stable structure, cannot be loose and is durable in use; the dam body is high in self-supporting strength; and the self weight and stability of the soil-retaining dam can be improved by filling concrete, stone materials, sand and stones which are silted up naturally and the like manually in gaps among the waste tyres.

The invention relates to an automatic gas diluter. An output shaft of a motor is in transmission connection with a turbine in a wind turbine room upwards; a hanging buckle is arranged above the wind turbine room; a storage battery casing is fixed at the lower part of the motor; and gas concentration sensors are respectively installed on the storage battery casing and a wind turbine room casing. The automatic gas diluter is simple in structure, is easy to process and implement, has low production cost, is convenient to use, is portable and can move at any time along with the movement of an upper corner. The automatic gas diluter has the effects of automatic detection and automatic startup ventilation, is provided with a storage battery for providing the power and can hermetically treat each electrical contact, thereby being safe and practical and having good sealing performance and safety.

The invention discloses an automobile transmission shaft installation and fixing structure, which comprises a transmission shaft fixing crossbeam fixed on the lower surface of the front floor, and the transmission shaft fixing crossbeam is composed of a crossbeam body and a transmission shaft fixing seat welded and fixed on the outer surface of the crossbeam body. On the upper surface of the front floor, a reinforcing crossbeam symmetrical to the fixed crossbeam of the transmission shaft is welded and fixed. The structure of the invention has better rigidity and can meet the requirements of bearing capacity and fixing reliability.

The invention provides a light heat-preservation type outer wall building board. The light heat-preservation type outer wall building board comprises a heat-preservation layer, a cement-based protective layer, bonding layers and a heat-preservation transition layer, wherein the bonding layers are arranged on the two sides of the heat-preservation layer; a plurality of stopping convex ribs protruding towards the heat-preservation layer are arranged on the bonding layers; the stopping convex ribs arranged on the bonding layers on the two sides of the heat-preservation layer are distributed in astaggered mode in the height direction of the light heat-preservation outer wall building board; the heat-preservation layer is filled with rock wool and an XPS extruded sheet; the rock wool and the XPS extruded sheet are arranged at intervals through partition plates; the rock wool is limited and stopped in the height direction through the stopping convex ribs arranged in the staggered mode in the height direction; the rock wool and the XPS extruded sheet are arranged in the heat-preservation layer, so that the heat-preservation and fireproof performance of the building board can be improved;the XPS extruded sheet can improve the supporting performance of the heat-preservation layer of the building board in the horizontal direction; and the arranged partition plates can ensure that two heat-preservation cavities are independent of each other, and the two materials are prevented from moving in the heat-preservation layer.

The invention discloses a method for constructing a steel-structure sand-blocking dam and the sand-blocking dam. One to n truss structural layers are constructed by means of the self forming process of drift sand, and the self height, the self length and the like can be freely adjusted; the sand-blocking process extends to a sand facing surface, thus, the normal development use of a sand backing surface is not influenced. The steel-structure sand-blocking dam disclosed by the invention has a simple structure, a good sand-blocking effect, high construction speed and material saving and is low in cost and easy to process and implement.

The gap drainage blade type diffuser for the centrifugal pump structurally comprises a front cover plate and a rear cover plate which are oppositely arranged in parallel, and is characterized in that a plurality of guide blades are arranged between the front cover plate and the rear cover plate, the front cover plate, the rear cover plate and the guide blades form a plurality of flow channels, and the flow channels are communicated with the front cover plate and the rear cover plate. And the radial middle part of the guide vane is slotted. Flow channels on the two sides of the blade are communicated through guide blade slots, flow separation on the surface of the blade can be effectively controlled and improved through drainage of the inner slots, separation vortexes are eliminated, the stall risk is reduced, and diffusion stability is improved. Therefore, the internal flow field and the blade load are redistributed when the deflection working condition or the circumferential placement angle of the diffuser is inappropriate. The phenomenon that a flow field in the diffuser is uneven in the circumferential direction is effectively improved, the unsteady speed and pressure pulsation of the flow field of the diffuser are reduced, and radial alternating stress borne by an impeller is reduced. The overall stability is improved, and the service life is prolonged.

The invention discloses a deformation machining process for nickel based alloys and iron nickel based alloys, and is used for solving the technical problems that the deformation machining of the nickel based alloys and the iron nickel based alloys in a solid solution state lowers the amount of crystal boundary carbide precipitation of materials in subsequent aging or serving process, thereby reducing the endurance strength, and the nickel based alloys and the iron nickel based alloys are low in plasticity, high in strength, difficult to deform and easy to crack when being subjected to deformation machining in an aging state. The process is technically characterized in that the nickel based alloys and the iron nickel based alloys subjected to solid solution treatment are subjected to one relatively-high-temperature heat treatment, carbides are precipitated near a crystal boundary firstly and simultaneously the precipitation of intracrystalline gamma' or gamma'' phases is reduced, then the obtained objects are subjected to deformation machining until the objects reach the required shape and size of parts, and finally, the obtained products are subjected to aging treatment, so that both the process properties of materials in the stage of deformation machining are ensured, and the final endurance strength of products is ensured.

The invention discloses a gear pump body machining fixing device which comprises a conveying machining table, a rotating table, a fixing clamping device and an adjusting assembly, the fixing clamping device comprises a rotating barrel, a clamping hydraulic rod, a pushing plate, a clamping piece and a sliding block, the rotating barrel is rotationally arranged in the conveying machining table, the rotating barrel is connected with the rotating table, and the adjusting assembly is arranged on the rotating barrel. The middle ends of the clamping pieces are hinged to the two sides of the rotating table, the clamping hydraulic rods are arranged in the rotating cylinders, the pushing plates are arranged on the clamping hydraulic rods, inclined sliding grooves are formed in the bottoms of the clamping pieces, the sliding blocks are arranged in the sliding grooves, and the two ends of the pushing plates are hinged to the sliding blocks. The invention belongs to the field of fixing devices, and particularly relates to a gear pump body machining and fixing device which is used for clamping and fixing a gear pump body, improving the machining efficiency, preventing vibration in the machining process, rotating and adjusting a rotating strip and a pump body, facilitating machining of different positions by a machining device and improving the machining convenience and efficiency.

The invention relates to a luggage carrying handle with electronic label and weighing functions. The luggage carrying handle is composed of a shell and a base formed by injection molding. The shell is provided with function keys and a liquid crystal display screen. The base is mounted on the lower surface of the shell and is provided with a battery chamber inside. Weighing sensors and a circuit board connected to the function keys and the liquid crystal display screen are arranged on the upper part of the base. Compared with the prior art, the luggage carrying handle provided in the invention has the advantages of simple structure, easy maintenance, complete and rich functions, and low cost, etc.

The invention provides an exterior wall building board. The exterior wall building board comprises a heat preservation layer, a cement base protective layer, adhesive layers and a thermal insulation transition layer. The adhesive layers are arranged on the two sides of the thermal insulation layer. A plurality of stopping convex ribs protruding towards the heat preservation layer are arranged on the adhesive layers. The stopping convex ribs arranged on the adhesive layers on the two sides of the heat preservation layer are distributed in a staggered manner in the height direction of the exterior wall building board. The thermal insulation layer is filled with rock wool and XPS plastic extrusion boards. The rock wool and the XPS plastic extrusion boards are arranged at intervals through partition plates. The rock wool is limited and stopped in the height direction by the stopping convex ribs arranged in the staggered mode in the height direction. The rock wool and the XPS plastic extrusion boards are arranged in the thermal insulation layer to improve the thermal insulation and fireproofing performance of the building board. The supporting performance of the building board heat preservation layer in the horizontal direction can be improved by the XPS plastic extrusion boards. The partition plates can ensure that two thermal insulation cavities are independent from each other, and two materials can be prevented from moving in the thermal insulation layer.

The invention aims to provide a handle door lock which is convenient for disassembling a lock cylinder and is longer in service life for solving the defects existing in the prior art. The handle door lock convenient for disassembling the lock cylinder comprises a panel, a handle and the lock cylinder, wherein one end of the handle penetrates through the panel; the other side is connected with the lock cylinder; a fixing plate used for fixing the lock cylinder is connected onto the panel; the fixing plate is fixedly connected onto the panel through screws; the lock cylinder is connected onto the panel through the fixing plate in a detachable manner; the lock cylinder is not welded onto the panel, and instead, the lock cylinder is connected onto the panel of the handle door lock through the fixing plate in a detachable manner, so that once the inner part of the lock cylinder is damaged, a user only needs to disassemble the lock cylinder for repair instead of replacing the lock cylinder; and according to the technical scheme of the invention, the fixing plate which is used for fixing the lock cylinder is connected onto the panel of the handle door lock through the screws, so that the fixing plate can be well fixedly connected with the panel by adopting the connection mode, and practical disassembly is convenient.

The invention discloses an anti-loosening and anti-rotation structure for threaded connection. The structure comprises a connecting outer sleeve, a connecting inner sleeve and anti-rotation reeds, wherein an inner surface of one end of the connecting outer sleeve is provided with a number of grooves that are arranged on the same circumference, the grooves are the same in structure, and each groove is provided with three arcs that are different in radius; along a clockwise screw thread engagement direction, a first arc is far greater than a third arc in radius; an outer surface of the connecting inner sleeve is provided with a number of gaps that are arranged on the same circumference, an inner part of each gap is provided with an anti-rotation reed, and each anti-rotation reed corresponds to a groove on the inner surface of the connecting outer sleeve; when a connector plug head is plugged in a plug seat, easy rotation can be realized in the presence of resistance due to a large radius of the first arc in each groove of the connecting inner sleeve and a smooth chamfer; after the plug head is screwed, great resistance of the anti-rotation reeds is met when a product operates in a vibration environment due to a small radius of the second arc in each groove of the connecting inner sleeve, and therefore a connector can be prevented from loosening and can be protected.