32results about How to "Fastening method is simple" patented technology

The present invention relates to a repair clamp providing an improved pipe repair clamp. The clamp according to the invention could be used in some cases as a coupling to join two pipe ends. The clamp comprises; a) a metal clamping band to surround 3600 of a pipe. The band being extended at both ends to form a hollow shape including a flat base, a wedge-shaped section and a convex rounded section, elongated apertures being provided to allow passage for screw fasteners through the hollow shape, narrow edges of the wedge-shaped sections being in contact with each other to form a substantially triangularly shaped space between the formed ends; and a flexible inner sealing sleeve disposed inside the clamping band and a pair of profile strips each having a major face for contacting the outer surface of the convex rounded section, and an opposite seating face for shoulder support of a plurality of screw fasteners, the strips having apertures to allow passage of the fasteners, and a plurality of screw fasteners inserted into the apertures wherein the tightening of said screw fasteners reduces the size of the triangularly shaped space and tightens the metal clamping band to compress the flexible inner sleeve sealingly against the outer diameter of the pipes.

The invention discloses a box type freight unmanned aerial vehicle, a matching system thereof and application. unmanned aerial vehicle freight, a standard cargo box generally adopted by cities or a national standard tricycle express distribution mode are combined, the box type freight unmanned aerial vehicle covers technologies such as cargo box standard, cargo bin structures, unmanned aerial vehicle navigation and flight control which are suitable for high attendance rate and low altitude flight, low altitude links and navigation monitoring systems and updating and development of a whole industry value chain such as corresponding airworthiness standard and authorized regulations, flight space managing regulations, operator training methods, unmanned aerial vehicle system design and manufacturing technology, flight application and business models. Design of box type freight of an unmanned aerial vehicle adopts carriage national standard of an express tricycle, express cargo automatic sorting engineering matching is facilitated, one-stop automatic sorting and box dividing transportation are achieved, a combined transport mode of air freight and urban express is established, time and cost of airport loading and unloading links are reduced, and development of automatic equipment of express delivery industry is promoted.

The invention discloses a connecting bolt enabling a screw to be mounted afterwards and a using method of the connecting bolt. The connection bolt comprises a screw and a rectangular bar. One end of the screw is provided with threads, and the other end is provided with a through notch. The through notch extends to the screw end portion along the direction of an axis of the screw, the rectangular bar is in pin connection onto the screw through a pin shaft in the through notch, and an axis of the pin shaft is vertical to the axis of the screw. The rectangular bar and the geometric center of the pin shaft do not coincide, all or part of the rectangular bar can be placed in the through notch, and the rectangular bar can swing to a position parallel with the axis of the screw or vertical to the axis of the screw around the pin shaft. According to the connecting bolt enabling the screw to be mounted afterwards and the using method of the connecting bolt, the screw is inserted into a bolt hole after two templates are mounted in position and bolt holes are aligned, so that template edges can be fastened; and the screw can be mounted afterwards, so that the fastening mode can be simplified, and the construction progress is fastened.

The invention discloses winding drums, a winding drum storage rack and a cutting device. Each winding drum comprises a cylindrical reel, frustum-shaped locating blocks and locating rods, wherein the two ends of the reel are provided with strip-shaped grooves respectively; through holes are formed in the middles of the locating blocks, locating holes communicated with the through holes are also formed in the locating blocks, and the two ends of the reel are sleeved with the two locating blocks through the through holes respectively; and the locating rods are arranged in the locating holes and tightly abut against the bottoms of the strip-shaped grooves. According to the winding drums, the winding drum storage rack and the cutting device, by adoption of the fastening structure formed in a manner that the two ends of each cylindrical reel are sleeved with the frustum-shaped locating blocks with bolts, even though the inside diameter sizes of copper foil coils (or PP coils) are not unified, the copper foil coils (or the PP coil) can be fastened to the maximum extent, and the fastening manner is simple.

The invention provides a mobile communication terminal with the function of swiping card, which comprises a main body and a back cover fixed on the main body, wherein the main body comprises a card swiping slot, the card swiping slot is internally provided with a card swiping magnetic head, the back cover can be fixed on the main body with two selectable installation modes, the back cover seals the card swiping slot under one installation mode, and the back cover unseals the card swiping slot under the other installation mode. With the two installation modes between the back cover and the main body, the back cover is unsealed by the card swiping slot under the state of swiping the card, and a user can adjust the installation mode of the back cover under the state that the card is not swiped, so that the back cover seals the card swiping slot to avoid dust; and the installation mode between the back cover and the main body is very simple and practical, so that mobile communication terminal is convenient in installation and is low in cost.

The invention discloses a washing machine. The washing machine comprises an inner barrel, a thread scrap filtering device and a drainage water channel, wherein the inner barrel contains washing waterindependently during clothes washing; the thread scrap filtering device is arranged on the barrel wall of the inner barrel and is used for filtering thread scraps in dehydration and drainage; and thedrainage water channel is arranged on the barrel wall of the inner barrel and communicates with a dehydration water outlet, and the drainage water channel, the thread scrap filtering device and the inner barrel are fixedly connected through the same connecting piece. The washing machine has the beneficial effects that a pre-positioning structure stud of a filtering cover on the thread scrap filtering device penetrates through the side wall of the inner barrel and partially penetrates into the side wall of the drainage water channel, an operator can visually see the stud of the filtering coverwhile the positioning effect is achieved, blind operation is avoided, the fastening reliability is improved, and the installation efficiency is further improved.

The invention discloses a rail connecting device capable of achieving corner connection. The rail connecting device comprises a ground pipe. A base is connected to the outer wall of the bottom of theground pipe through a thread, a supporting column is in threaded connection to the inner wall of the top of the ground pipe, a first stretching pipe is in threaded connection to the top of the side wall of the supporting column, a second stretching pipe is in threaded connection to the bottom of the supporting column, an inserting barrel is inserted onto the outer wall of the second stretching pipe, a second rotating sleeve is rotatably connected to the outer wall of the inserting barrel, a first connecting pipe is welded to the outer wall of one side of the second rotating sleeve, first rotating sleeves are rotatably connected to the top and bottom of the side wall of the inserting barrel, and connecting pipe fixing devices are arranged on the outer walls of one sides of the two first rotating sleeves. The rail connecting device can adjust angles of the first and second connecting pipes freely to meet connecting modes of different corners of a rail. The connecting modes can be selected freely, so that the application range of the equipment is improved and the stability of rail connection is improved.

The invention provides a complex structural part clamp, which comprises a plurality of clamping jaw units. Each clamping jaw unit comprises a clamping part, a positioning part, a fastening part and anauxiliary measuring part. The outline of the clamping part is matched with the outline of a part, and the clamping parts of the multiple clamping jaw units are distributed in the circumferential direction to jointly clamp the part. The positioning part is used for positioning the clamping jaw unit and a machine tool; the fastening part is used for fastening the clamping jaw unit on the machine tool; and the auxiliary measurement part is used for verifying whether the clamping position of the part is reasonable. The current situations of poor quality stability and long production preparation time caused by repeated clamping and frequent benchmark conversion in the machining process of similar structural parts are improved, and the machining efficiency and the quality stability are improved.

The invention discloses a cage door locking structure which comprises a door holder (2), door screen jug lines (6), a baffle (7) and a cage door (8), wherein double lug pieces (1) are arranged on the door holder (2); a lug piece clearance (4) is formed between the two lug pieces (1); a pair of clamping legs (3) is further arranged at the lower end of the door holder (2); a clamping leg clearance (5) is formed between the two clamping legs (3); the door holder (2) is used for fixing the baffle (7) and the cage door (8) into a whole through the lug piece clearance (4) and the clamping leg clearance (5). According to the invention, the cage door locking structure is made of plastics, the mounting is simple, the use is convenient, besides, the cage door locking structure further has a certain protecting function on a door screen steel wire to prolong the service life of the door screen steel wire, the cost is low, and the performance is excellent.

The invention discloses a fastening device for sport equipment. The fastening device for the sport equipment comprises a rotary disc, the rotary disc is rotatably arranged on a support, a swing rod isarranged at the top of the rotary disc, a drive gear is arranged on the edge position of the bottom of the rotary disc, the drive gear is engaged with a bevel gear on the support, and an outer clamping plate and an inner clamping plate are arranged on lower part of the support. According to the fastening device for the sport equipment, a locking mechanism on the outer clamping plate is firstly released, a plate part is preliminarily clamped and taken by using the elastic force of a spring, then an optimal clamping force is obtained by slowly squeezing the spring, the situation that the platepart falls due to the insufficient clamping force or the surface of the plate part is sunken due to the fact that the clamping force is too strong is avoided, the processes of fastening and dismounting of the fastening device are both convenient, fast and easy to operate, the fastening device is basically suitable for clamping work between any two plate-shaped structures, the condition that the clamping device is not matched with the plate part is avoided, and the plate part is protected and buffered to some extent.

The invention relates to the field of circuit breaker testing, in particular to a tool for breaker operation test. The tool comprises a sealing plate used for being fixed to a wire inlet or a wire outlet of a circuit breaker shell. The sealing plate is fixedly provided with a terminal base which is used for transmitting an electric signal on an inlet wire conductor or an outlet wire conductor in the circuit breaker to the outside. The terminal base is provided with an outer connecting end used for being connected with an external test device and an inner connecting end used for being connectedwith an inlet wire conductor or an outlet wire conductor. The inner connecting end is provided with the plug-in conductive structure used for plug-in conduction with the inlet wire conductor or the outlet wire conductor, the plug-in conductive structure comprises the elastic conductor used for elastic conductive contact with the inlet wire conductor or the outlet wire conductor, and compared withthe prior art, the plug-in conductive structure does not need to be fixed through a bolt, simplifies the preparation process in the early stage of a test, and improves the test efficiency.

The invention discloses a cycloidal-pin gear speed reducer which comprises an input shaft, a cycloidal gear, a pin gear and an output plate, and is characterized in that the pin gear is split-type; anintegrated pin gear structure is formed by splicing a plurality of sub pin gears of which the sum of the angles of circumference is 360 degrees; the matching surfaces between the adjacent sub pin gears is perpendicular or not perpendicular to the cross section of the pin gear; the sub pin gears are engaged with the cycloidal gear through rolling needles; and a fixed connection mechanism realizingsplicing and splitting of the sub pin gears is arranged on the circular arc-shaped end surface of each sub pin gear. The cycloidal-pin gear speed reducer has the advantages that the defects of a cycloidal-pin gear speed reducer which is of an integrated pin gear structure is overcome, the lubricating effect is effectively improved, the friction force is reduced, and the service lives of all components in the speed reducer are prolonged; positioning, fastening and dismounting modes are diversified, the replacement of rolling needles is facilitated, and the worn sub pin gears can be only replaced; and the production cost is effectively reduced, the production efficiency is improved, and the practicability is high.

The invention provides a medical field multi-mode tightening connector which comprises a connector body, the connector body is a handle, an outer hexagon wrench position, a hand-screwing anti-skid position and a plug-pull push-pull handle position are arranged outside the handle, hand-screwing anti-skid lines are arranged on the hand-screwing anti-skid position, and the plug-pull push-pull handle position is in an arc shape adaptive to the finger pad; the length of the outer hexagonal wrench position in the axial direction ranges from 3 mm to 3.5 mm, the length of the hand-screwing anti-skid position 200 in the axial direction ranges from 2.50 mm to 2.80 mm, and the length of the plug-pull push-pull handle position 300 in the axial direction ranges from 4.9 mm to 8.0 mm. According to the defects of original various single-form connectors, the connector capable of being tightened in multiple modes in the medical field is developed, and the final beneficial effect of the connector is that various modes of hand screwing, wrench tightening and back taper inserting and pulling functions are achieved.

The invention discloses a buckling tool of a board-to-board connector, and a buckling method of the board-to-board connector. The board-to-board connector comprises a first buckling body and a secondbuckling body, wherein one of the first buckling body and the second buckling body is provided with a matching projection, a matching groove is formed in the other one of the first buckling body and the second buckling body, at least one part of the inner side wall of the matching groove forms a guide face, the guide face inclines towards the center of the matching groove in the direction from theopening of the matching groove to the bottom wall of the matching groove, and the matching projection is suitable for stretching into the matching groove. The buckling tool comprises a first guide piece suitable for being connected with the first buckling body, and a second guide piece connected with the first guide piece in a sliding manner. According to the buckling tool of the board-to-board connector, the situations of poor buckling and buckling damage of the board-to-board connector can be effectively avoided, and the buckling yield of the board-to-board connector is improved.