32results about How to "Connection fit" patented technology

The invention discloses a symmetrical pipe connecting device. The symmetrical pipe connecting device comprises a pair of connecting sleeves which are oppositely arranged. The connecting sleeves are separably connected through a hoop. Each connecting sleeve is provided with a buckle slab array composed of buckle slabs. According to the symmetrical pipe connecting device, two pipelines can be connected and separated easily by a user by means of the connecting sleeves oppositely arranged and the separable hoop; the symmetrical pipe connecting device is easy and convenient to use, easy to operate, good in sealing performance, high in pressure resistance and particularly suitable for connecting flexible pipelines.

The invention discloses a liquid-phase diffusion bonding method for quartz composite ceramic and an iron-nickel alloy. The liquid-phase diffusion bonding method comprises the following steps: surface cleaning is performed: the bonding surface of the iron-nickel alloy is cleaned with acetone, and nickel plating is performed on the bonding surface of the quartz composite ceramic with a chemical nickel plating process; an interlayer alloy is prepared: foil with a certain thickness is prepared from the interlayer alloy containing trace Ni, Ag and Cu elements; joint assembling clearance is designed; liquid-phase diffusion bonding is performed: the quartz composite ceramic material, the interlayer alloy and the iron-nickel alloy are assembled by a tool and placed into a vacuum furnace, nitrogen is introduced for protection, heat is preserved for 15-60 min at the temperature of 380-550 DEG C, and the cooling with the furnace is performed. The bonding joint of the quartz composite ceramic and the iron-nickel alloy is stable, the bonding strength is high, high-temperature resistance is realized, and the liquid-phase diffusion bonding method is particularly applicable to bonding of the quartz composite ceramic material and the iron-nickel alloy material which have large sizes.

The invention provides a double L-shaped cubic modularized self-reconstructing robot based on rotational hook hole connection, which relates to a robot. The present invention aims at solving the problems that the existing array-typed robot is not flexible enough in motion and the robot after being assembled can not efficiently move, as well as the problems of large volume, heavy weight and large heat productivity, and the like, in an electromagnetic connecting mechanism. The present invention is characterized in that a first drive connecting module is fixedly connected with a second drive connecting module; a third drive connecting module is fixedly connected with a fourth drive connecting module; a first driven connecting module is fixedly connected with a second driven connecting module; a third driven connecting module is fixedly connected with a fourth driven connecting module. The present invention has the self-reconstructing function of local modules of the array-typed system and the motional function of integrated configuration of a tandem-typed system. The load / deadweight rate of the module is 4.5:1 and the drive module or the driven module can be exchanged automatically. The mechanism does not need to maintain the energy in the connecting state and the disconnecting state, thus saving the energy.

The invention discloses a wood structure connecting joint long in service life and convenient to replace, and relates to the technical field of wood structure connection.The wood structure connecting joint comprises a connecting table, cross-shaped grooves are symmetrically formed in the outer wall of the connecting table, cross-shaped threaded rods are fixedly installed in the middles of the inner walls of the cross-shaped grooves, and adjusting blocks are slidably connected to the outer walls of the two sides of the cross-shaped threaded rods; the outer walls of the two sides of the cross threaded rod are in threaded connection with first nuts, the first nuts are attached to the adjusting blocks, mounting hollow shafts are rotationally mounted on the inner walls of the adjusting blocks, rotating rings are symmetrically inserted into the outer walls of the mounting hollow shafts, and lead screws are fixedly mounted at the input ends of the rotating rings. According to the wood structure connecting device, by arranging the cross threaded rod and through position cooperation between the adjusting block and the nut block, adjustment can be conducted according to the size of a wood structure, the device can better adapt to connection of various wood structures, the application range of the device is wide, meanwhile, the device can be connected with the wood structure in a more attached mode, and connection is more stable.

The invention provides an anti-collision damper support and a production method thereof. The anti-collision damper support comprises a mounting base plate, two damper fixing plates symmetrically arranged at the bottom of the mounting base plate and damper protective jackets and is characterized in that damper fixing holes are formed in the damper fixing plates; the mounting base plate is providedwith through holes, the damper fixing plates are provided with protrusions, the damper fixing plates are arranged on the mounting base plate in an inserted manner through the protrusions, the top of the mounting base plate is provided with grooves, wear-resistant rubber is arranged in the grooves, and the outer periphery of the mounting base plate is provided with a plurality of mounting holes; the damper protective jackets are arc-shaped resin protective jackets which sleeve dampers. The anti-collision damper support is resistant to vibration and capable of guaranteeing that the dampers can be normally used during the intense bump or collision of a vehicle.

The invention discloses a waterproof pressure switch of a water purifier. The waterproof pressure switch comprises a pressure driving portion, a lever, a spring device, a travel switch and a shell. The pressure driving portion comprises a piston. The head of the piston is connected with an elastic membrane in an abutting mode. A protruding arc surface is formed on the side, away from the head, of the piston. A sunken arc surface matched with the protruding arc surface is formed at the position, corresponding to the arc surface of the piston, on the upper surface of the lever. Due to the two matched arc surfaces, the piston and the lever are connected in an abutting mode. The shell comprises a main shell and an auxiliary shell. The main shell is in a cuboid shape. An opening through which the travel switch is allowed to pass is formed in one face of the main shell. The face, adjacent to the opening, of the main shell and a communicating pipe are integrally formed. The auxiliary shell is in a hollow prismatic shape and connected to the opening in a sleeving mode. A waterproof gasket is arranged between the auxiliary shell and the main shell in a padded mode. The waterproof pressure switch of the water purifier can have the advantages of being stable in performance, precise in preset pressure control, good in waterproof performance and the like.

The invention relates to a device for automatically limiting position after a gear and a rack reciprocate in a straight line to a terminal under the action of force, in particular to an automatic position limiting device for a gear and a rack with a slideway groove structure when reciprocating to an end. Including housing, fixed seat, main shaft, gear, rack, automatic limit drive block, fixed slideway groove and dragging object, one side of the housing is provided with a fixed seat, the fixed seat is fixedly connected to the main shaft, and the main shaft passes through the housing Connected with the gear, the gear and the rack are meshed; the inside of the housing is equipped with an automatic limit drive block, the rack is set at the inner middle position of the automatic limit drive block, and there are fixed slideway grooves on both sides of the automatic limit drive block. The fixed slideway groove is fixed on the housing, and the end of the automatic limit drive block is connected with the dragging object. The automatic limit driving block of the device is the main structure, which is simple and practical in structure, and is convenient for maintenance; the automatic limit driving block connects different dragging objects at different positions, and is suitable for the connection of dragging objects in any equipment that does linear reciprocating motion.

The invention relates to an automatic limit device after a gear and a rack reciprocate linearly to the terminal under the action of force, in particular to an automatic limit device for a gear and a rack to reciprocate to the end; including a housing, a fixed seat, a main shaft, a gear, a Bar, automatic limit drive block, fixed slideway and drag object, one side of the housing is provided with a fixed seat, the fixed seat is connected to the fixed main shaft, the main shaft passes through the housing and is connected with the gear, and the gear and the rack mesh; An automatic limit drive block is set inside, and the rack is set at the inner middle position of the automatic limit drive block. There are fixed slideways on both sides of the automatic limit drive block, and the fixed slideways are fixed on the shell. The automatic limit drive block The end part of the connection drag object. The automatic limit driving block of the present invention is the main structure of the present invention, the structure is simple and practical, and it is convenient for maintenance; the automatic limit driving block can connect different dragging objects at different positions, and is suitable for dragging objects in any equipment that does linear reciprocating motion. connect.

The invention discloses a connecting piece, a bent arm and a bone conduction earphone, the connecting piece comprises a hard main body, the main body comprises a straight line section and an arc line section, the straight line section and the arc line section are integrally formed and poured to form the appearance for limiting the main body, the straight line section extends in the direction away from the arc line section to form a clamping hook structure, and the clamping hook structure is connected with the bent arm. The bending direction of the arc line section is opposite to the hooking direction of the clamping hook structure, and the sectional area of the arc line section is gradually reduced in the direction away from the straight line section. The connecting piece better fits the structure of the bent arm, is not prone to deformation and fracture and is higher in stability; the memory steel wires are adopted in the bent arms, elasticity is high, restoring force is better, and the clamping effect is not affected after long-term use; the earphone provided by the invention is stable in clamping and better in wearing experience.

The invention discloses an ultra-long thin-wall hydraulic bolt sleeve. The ultra-long thin-wall hydraulic bolt sleeve comprises an ultra-long thin-wall hydraulic bolt sleeve body, wherein the ultra-long thin-wall hydraulic bolt sleeve body comprises a main bolt sleeve body, a first auxiliary sleeve body, a second auxiliary sleeve body and a third auxiliary sleeve body, one side of the main bolt sleeve body is connected with an extension rod, and a hydraulic bolt sleeve mounting thread is arranged at the tail end of the extension rod; a mounting limiting ring is arranged at the position, located on the outer side of the extension rod, of one side of the hydraulic bolt sleeve mounting thread; and a main mounting opening is formed in the other side of the main bolt sleeve body, a main sleeve functional clamping groove is formed in the position, located in the extension rod, of one side of the main mounting opening, the first auxiliary sleeve body is arranged in the main sleeve functional clamping groove, and a first sleeve functional clamping groove is formed in the first auxiliary sleeve body. The ultra-long thin-wall hydraulic bolt sleeve has the beneficial effects that the ultra-long thin-wall hydraulic bolt sleeve is compact in structure, convenient to use, practical in function and convenient to disassemble, assemble and store, a longer extension rod and inner hexagonal grooves of more specifications can be provided for the hydraulic bolt sleeve, and hexagonal nuts of various specifications can be conveniently assembled and disassembled.

The invention discloses a highway PHC pipe pile tip welding auxiliary device, and relates to the field of PHC pipe piles. The highway PHC pipe pile tip welding auxiliary device comprises a PHC pipe pile body, a second fixing ring is arranged on one side of the PHC pipe pile body, a supporting rod is arranged on one side of the second fixing ring, a pile tip is arranged on the lower surface of the PHC pipe pile body, and a guide mechanism is arranged on the lower surface of the pile tip. A clamping mechanism is arranged on the outer surface of the PHC pipe pile body, and the bearing mechanism is arranged on one side of the PHC pipe pile body. According to the highway PHC pipe pile tip welding auxiliary device, by arranging the clamping mechanism, welding of a PHC pipe pile and a pile tip can be conveniently assisted, by arranging the guide block, connection between the PHC pipe pile body and the pile tip can be more attached, and by arranging the windproof plate, the highway PHC pipe pile tip welding auxiliary device is convenient to use.

The invention belongs to the technical field of mechanical connection structures, and specifically relates to a profile connection structure. The profile connection structure with simple structures, low costs, firm connection and good effects can be provided. The connection structure includes an angle profile, a connecting block, a main body structure, a crimping buckle cover, a profile body, an embedding rotary member and a plug-in member, and is characterized in that the upper part on one side of the main body structure is provided with a connecting groove; the surface of the connecting groove is provided with the crimping buckle cover; the profile body is arranged corresponding to the main body structure; the internal of the profile body is provided with the embedding rotary member; andthe embedding rotary member is provided with the plug-in member.

The invention discloses a welding device and a welding method for solving high-nitrogen steel welding pores and improving joint strength, and belongs to the field of welding technology. Two welding workpieces are fixed on the first workpiece support plate and the second workpiece support plate in the form of butt joint On the top, a weld joint gap is formed between the two welding workpieces. There is a groove on the front of the welding workpiece and the gap between the weld joints. The pipe wall of the first water-passing copper pipe and the pipe wall of the second water-passing copper pipe are close On both sides of the groove; the excitation coil is placed on the back of the welding workpiece, the laser beam is irradiated vertically on the front of the welding workpiece, the welding torch is placed on the front of the welding workpiece, the laser beam, the weldment joint gap and the excitation coil are coaxial. It solves the problems in the prior art that high-nitrogen steel is prone to gas, nitrides, carbides and carbonitrides during the welding process, and the weld grains are coarse, thereby improving the mechanical properties of high-nitrogen steel welded joints and improving the Toughness in the heat-affected zone of the weld.

The invention provides a Self-maintenance shock absorber bracket and a preparation method thereof.The support for self-maintenance shock absorber comprises a mounting bottom plate and a shock absorb fixing plate. The shock absorber fixing plate is two, symmetrically arranged at the bottom of the mounting bottom plate, and the shock absorber fixing plate is provided with a shock absorber fixing hole. Wherein the mounting bottom plate is provided with a through hole, the shock absorber fixing plate is provided with a protrusion, and the shock absorber fixing plate is inserted on the mounting bottom plate through the protrusion; Wherein, a groove is arranged on the top of the mounting bottom plate, the groove is provided with an abrasion-resistant rubber, and a plurality of mounting holes arearranged on the outer periphery of the mounting bottom plate; An anti-rust layer sprayed on the outer surfaces of the mounting bottom plate and the shock absorber fixing plate; Anti-rust liquid storage tank. The self-service shock absorber is anti-collision and anti-shock, and can ensure the normal use of the shock absorber in the event of strong bumping or collision of the vehicle.