138results about How to "Butt firm" patented technology

The invention discloses a butt joint control method and a system of a spreading machine and a dump truck. The method comprises the following steps of: (a), stopping the dump truck in neutral gear in front of the spreading machine and making the car hopper of the dump truck be oblique; (b), detecting the initial speed of the spreading machine in real time; (c), when the initial speed is greater than a first speed, reducing the speed of the spreading machine and contacting and butting with the dump truck with a second speed, wherein the second speed is less than or equal to the first speed. By using the above technical solution, the spreading machine and the dump truck can finish contact and butt joint stably.

The invention provides a transformer station fire-fighting robot and an operating method thereof. The transformer station fire-fighting robot comprises a mobile chassis and a fire extinguishing mechanism; the fire extinguishing mechanism is arranged on the mobile chassis; the fire extinguishing mechanism comprises a dry powder spraying mechanism and a self-spraying mechanism; the dry powder spraying mechanism comprises a plurality of dry powder tanks; the outlets of the dry powder tanks are connected to a spray head through a pipeline; the spray head is arranged on a swiveling head; the swiveling head is arranged on the mobile chassis through a lifting mechanism to realize adjustability of dry powder spraying height and angle; the self-spraying mechanism comprises at least one water inletpipe; one end of the water inlet pipe is used for connecting with a fire fighting water spray head and the other end of the water inlet pipe is connected with a vertical pipe; a swiveling joint is arranged at the other end of the vertical pipe; and a spraying head is arranged on the swiveling joint.

The invention discloses an electric welding machine system with a built-in welding smoke innocent treatment mechanism, and relates to the technical field of electric welding machines. A welding tool special for butt joint of large-caliber steel pipes is researched and developed according to the requirements of the large-caliber steel pipes during butt joint machining treatment, the work is achieved in such a way that two runways are symmetrically and fixedly installed on the top end face of an equipment bearing base plate, the sliding end faces of the two runways are slidably connected with adriving mechanism, a driven mechanism and two sets of pipe head connecting supporting mechanisms correspondingly, a driving adjusting mechanism and a driven adjusting mechanism which are of the same structure are connected above the driving mechanism and the driven mechanism in a rolling mode correspondingly, the steel pipe A and the steel pipe B are driven to rotate synchronously through rotationof the welding tool, according to the tool of the structure, a welding robot is taken as the center, it is not needed that an existing welding robot has the multi-point, multi-thread and multi-dimensional welding function, and therefore the early-stage investment cost and the later-stage maintenance cost of an enterprise are greatly reduced.

The invention provides a fully automatic connecting device for testing a new energy vehicle battery pack. The device comprises a female head adjusting mechanism and a male head automatic connecting mechanism. The bottom of the female head adjusting mechanism is adjustably connected to a battery pack feeding vehicle, and the male automatic connecting mechanism is fixed on one side of a positioningmechanism that cooperates with the battery pack feeding vehicle. One end of the female head adjusting mechanism is connected to a battery pack test harness, and the other end is fixedly provided witha female plug. The male head automatic connecting mechanism is fixedly provided with a male plug, and the connection of the female head adjusting mechanism and the male head automatic connecting mechanism is achieved through the female plug and the male plug. The fully automatic connecting device has the advantages that errors can be maximally absorbed in the three directions of x y and z throughthe adjustment of a male end and a female end, so that the connection process is quick, stable and efficient, and the precision can be controlled within 0.15 mm.

The invention discloses a multifunctional insulating baffle. The multifunctional insulating baffle comprises two insulating baffle bodies. Each insulating baffle body is provided with a telescopic insulating hook. The two sides of the insulating baffle bodies are provided with guide rails. The guide rails are connected with push-pull folded wings. The edge of each insulating baffle body is provided with a semicircular groove. The positions, at the two ends of the semicircular grooves, of the insulating baffle bodies are provided with locking type safety buckles. According to the multifunctional insulating baffle, the length of the telescopic insulation hooks can be adjusted according to the distance between upper-layer wires and lower-layer wires on site, so the problem that the wires can not be hung on the hooks due to the fact that the distance between the upper-layer wires and the lower-layer wires is larger than the length of the hooks of an original insulating hanging plate can be solved, and the phenomenon that the problem makes it inconvenient for operating personnel to climb up electric poles can be avoided; the stretching length of the insulating baffle can be adjusted according to the operation environment on site so that the wires can be hung regularly; meanwhile, the wires can be hung firstly and the stretching length of the insulating baffle can be adjusted secondly, and then the problems that the insulating baffle is hung irregularly and the safe distance is difficult to control in the hanging process due to a complex ambient environment and dense devices are avoided; furthermore, a certain mechanical strength can be met, and meanwhile it can be guaranteed that the two insulating baffle bodies are in butt joint with each other firmly and reliably.

The invention discloses a turnout mechanism for a suspension type rail traffic transportation system. A swinging rail beam comprises a section of continuous first main body, multiple sections of second main bodies and a reinforcing main body, wherein a preset gap is reserved between every two adjacent second bodies, and the two ends of the reinforcing main body are connected to the upper parts ofthe first main body and the multiple sections of second main bodies correspondingly. The technical scheme aims to solve the problems of complex line connection mode and low line connection efficiencyof a branching mechanism in the prior art.

The invention provides a self-waterproof cable coaxial butt joint device with a pier head. The device is mainly used for large cable butt joint. The butt joint is firm. A cable is prevented from being pulled off from the butt joint. The butt joint is short. The device has a self-waterproof function. The device provided by the invention mainly consists of a connection nut 1, connection sleeves 2, a cable copper core 3, a tapered waterproof ring 4, a circular waterproof ring 5 and cable pier heads 7. According to the main working principle, left and right connection sleeves 2 respectively pass through left and right butt joint cables; the end parts of the cable copper core 3 are extruded into the cable pier heads 7 by a dedicated pier head mold; the circular waterproof ring 5 is arranged; the connection nut 1 is rotated; through the connection nut 1, left and right connection sleeves 2 gradually draw close until semicircular grooves 13 of left and right connection sleeves 2 clamp the circular waterproof ring 5, and at the same time left and right cable pier heads 7 draw close; the tapered waterproof ring 4 presses the cable insulation skin 6; and cable butt joint is completed.

An air inlet blocking mechanism for a motor vehicle engine air inlet pressure test is disclosed and comprises a mobile platform (1), two groups of blocking heads (3) which are arranged on a model-change rotating shaft (10) at one end of the moving platform (1) and are used for blocking an air inlet of the tested engine, air cylinders (2A, 2B and 2C) arranged on the rear sides of the two groups of blocking heads (3), a pressure sensor (5) and a pneumatic ball valve (6) which are both arranged on the rear sides of the blocking heads and are communicated with the blocking heads (3), and a swing air cylinder (8) which is arranged at one end of the model-change rotating shaft (10), , wherein the two groups of the blocking heads (3) are arranged at a certain angle in a spaced manner; the first air cylinder (2B) is used for pushing the blocking heads; the second air cylinders (2A and 2C) drive an air inlet butting seat (9) to be connected with the model-change rotating shaft (10); the swing air cylinder (8) is fixedly connected with the model-change rotating shaft (10) and can rotate. The air inlet blocking mechanism can be used for conveniently switching the blocking heads when the air inlet pressure of engines of multiple models is detected online and engines of different models are changed, and therefore the blocking heads correspond to air inlets of engines of different models.

The invention discloses a three-section type butt-joint device which is characterized by comprising a base plate. A butt-joint turning-over system is arranged on the base plate, a butt-joint fixing system is arranged on one side of the butt-joint turning-over system, and a butt-joint translation system is arranged on the other side of the butt-joint turning-over system. The three-section type butt-joint device guarantees sterility of a medicine factory and production process continuity, is stable in butt joint with a plate layer and can achieve fast and high-precision butt joint.

The invention discloses a prestressed concrete tubular pile locking mechanical quick joint, and relates to a building concrete tubular pile connecting structure. Step conical holes are formed on inner holes of two ends of tubular piles; the quick joint is provided with a connecting device, and the connecting device consists of two cone expanding rings, two cone expanding plugs, two sets of fan-shaped conical pad racks, a double-head screw and a locking turntable; the cone expanding rings are of tubular bodies, a plurality of axial strip grooves are uniformly distributed on the tubular bodies,the cone expanding plugs are of frustums, the centers of the frustums are provided with opposite threaded holes, the locking turntable is jointed to the opposite end faces of two tubular piles through a plurality of balls placed on circumferential arc grooves of two sides before the two tubular piles are butted, the two cone expanding plugs are twisted on the double-head screw in the center of the locking turntable, the internal circles of fan-shaped conical blocks are sleeved on the external circles of the cone expanding plugs, a central hole of a bracket disc is sleeved on the middle part of a stud bolt, the internal circles of the cone expanding rings are sleeved on the external circles of the fan-shaped conical blocks, and the external circles of the two cone expanding rings are sleeved in the step conical holes of the front and rear tubular piles; and cone expanding butt joint is implemented by rotating the locking turntable. The quick joint is butted quickly and firmly, and improves the work efficiency.

The invention discloses an auxiliary pushing device for aluminum panel processing. The auxiliary pushing device comprises a fixed plate, and fixed tracks are arranged on the two sides of the fixed plate. First guide rails are arranged between the fixed tracks and the fixed plate, and sliding blocks are arranged on the first guide rails. Sliding plates are arranged on the sliding blocks, and second sliding rails are arranged on the sliding plates. A slide rest is arranged on the second sliding rails, and a pushing block is arranged on the slide rest. A supporting frame is arranged between the fixed tracks and the fixed plate, and the upper part of the supporting frame is provided with a first air cylinder. The front part of the first air cylinder is provided with a first telescopic shaft, and the first telescopic shaft is connected with the slide rest. The lower part of the fixed plate is provided with a second air cylinder, and the front part of the second air cylinder is provided with a second telescopic shaft. The end part of the second telescopic shaft is provided with a clamping sleeve, and the clamping sleeve is arranged at the lower part of the supporting frame. The bottom of the fixed plate is provided with a supporting seat, and the second air cylinder is arranged on the supporting seat. An aluminum panel to be processed is put on the sliding plates, and the aluminum panel can be conveniently pushed through the slide rest. The auxiliary pushing device is convenient to process and push the aluminum panel as an auxiliary way.

The invention discloses a memory-alloy-based quick-changing connector for a reconfigurable manipulator and belongs to the technical field of robots. The memory-alloy-based quick-changing connector forthe reconfigurable manipulator comprises a connector male end and a connector female end which are matched with each other. The connector male end comprises a male end main body, a plug support, a plug, a first locking ring and a locking sliding block. Memory alloy drives the locking sliding block to move in the axial direction of the male end main body. The connector female end comprises a female end main body, a socket and a second locking ring. The first locking ring is provided with a through hole internally provided with a steel ball. The locking sliding block is provided with a first inclined part abutting against the steel ball. The position, corresponding to the through hole, of the second locking ring is provided with a locking groove. The locking sliding block can drive the first inclined part to abut against the steel ball to achieve movement, and thus butt joint or separation is achieved. The memory-alloy-based quick-changing connector for the reconfigurable manipulator issimple in structure, and butt joint or separation operation of the connector is very convenient.

The invention relates to a reliable butt joint and self-destruction device and method suitable for an underwater unmanned underwater vehicle, and solves the problems of reliable butt joint, smooth release, safe self-destruction, good sealing and the like in task execution of the underwater vehicle. The device is an electromechanical combination device, the mode that a reverse stroke self-locking turbine worm reducer and gear rack pin transmission are combined is adopted, a motor rotates forwards, the relative position of the underwater vehicle and a butt joint opening is locked, the transmission design is reused, and after information transmission is finished, the motor rotates reversely; the sliding block moves forwards and backwards along with a rack pin, and touches a limiting microswitch back and forth to control the movement position of the rack pin, so that the rack pin can extend out, return and retract. In order to prevent the rack pin from being pressed back under the action of external hydraulic pressure after power-off, large reverse torque is designed. A guide pin is fixedly connected with a shell, and it is ensured that the rack pin moves in the fixed direction. The device is verified by multiple tests such as a real navigation test, and is reasonable, feasible and good in effect.

The invention provides an oil-gas conveying pipe and a manufacturing method of the oil-gas conveying pipe, and belongs to the technical field of oil-gas conveying equipment. The oil-gas conveying pipecomprises a steel pipe and a welding layer, the welding layer is fixedly arranged on the end portion of the steel pipe, and the welding layer is uniformly arranged on the surface of the steel pipe around the axis of the steel pipe. The invention further provides a manufacturing method of the oil-gas conveying pipe. Parameters of the welding layer are determined according to the size of the end portion of the steel pipe and the stress bearing capacity required for butt joint welding; welding layers used for increasing the thickness of the end portion of the steel pipe are welded to the inner surface and / or the outer surface of the end portion of the steel pipe in the circumferential direction of the steel pipe according to the parameters; and the welding layers are subjected to fine machining. By means of the oil-gas conveying pipe, the butt joint precision and roundness of the end portion of the steel pipe can be ensured, the butt joint is firm, and potential safety hazards are eliminated.

The invention belongs to the technical field of pipeline laying and particularly relates to a non-excavation construction method of an ultra-large-diameter poly ethylene (PE) drain pipe. The technical problem that an existing ultra-large-diameter PE drain pipe is high in laying difficulty and the like is solved. The non-excavation construction method comprises the steps: A, drilling; B, device installation; C, pipe distribution for the first time; D, continuous pipe distribution; E, pipe distribution completion. The non-excavation construction method of the ultra-large-diameter PE drain pipe has the advantages that the construction is simple, the traction difficulty of an ultra-large-diameter PE drain pipe body is low, excavated construction pits are small, slippage does not easily occur during dragging, the pipe body does not easily break and is not easily scratched during dragging and is high in sealing performance, the inside of the pipe body is not required to be cleaned, and abutting joint of the pipe body is firm.

The invention provides a docking translation mechanism for components of a fan tower frame. The docking translation mechanism for the components of the fan tower frame comprises a plurality of independent cross beam support parts, a common cross beam support part, a plurality of cross beams and a plurality of first component support parts, wherein the cross beams are arranged corresponding to the independent cross beam support parts and are erected on the independent cross beam support parts and the common cross beam support part; the first component support parts are correspondingly arranged on the cross beams, support first components and move the first components in the horizontal direction. The invention also provides a stopping mechanism for the components of the fan tower frame. The invention also provides a docking device consisting of the docking translation mechanism and the docking stopping mechanism or two docking translation mechanisms, and a docking method based on the docking device. Through the docking device, the docking method, the translation mechanism and the stopping mechanism for the components of the fan tower frame, disclosed by the invention, the levelness of the components can be fully guaranteed in component docking operation; the components are supported stably, and meanwhile, precise docking is completed.

The invention discloses a fuel gas pipeline butt-joint mounting structure. The fuel gas pipeline butt-joint mounting structure comprises a first fuel gas pipeline and a second fuel gas pipeline, wherein a circular groove is formed in the position, close to the edge of one end, of the inner surface wall of the first fuel gas pipeline; the inner surface wall of the circular groove is fixedly equipped with a first rubber layer; a first magnet is embedded into the first rubber layer; and a short tube is welded on the position, close to the edge of one end, of the inner surface wall of the second fuel gas pipeline. A rotary handle rotates to drive a turbine to rotate, so that a worm rotates; threads are arranged on the inner surface wall of a penetrating hole, so that the worm moves, and therefore, the first fuel gas pipeline and the second fuel gas pipeline are in butt-joint more conveniently, tools used by a worker can be reduced better, and hands of the worker are prevented from being injured; and meanwhile, after the fuel gas pipelines are in butt-joint, a screw can rotate for fixing the rotary handle better, so that butt-joint for the fuel gas pipelines is firmer.

The invention discloses a welding method for jointing contacts of copper-aluminum composite material lead wires and copper down-lead wires in an abutting way; the method comprises the following steps: firstly, proper die mold and a connecting bobbin are selected; a punching mold is arranged above a piston head of a cold press welder, and a cavity mold is fixed above a cylinder body frame of the cold press welder, then the fluid cylinder frame is arranged at the proper position outside the connecting bobbin or a connecting terminal in a supporting way; the distance of the press pit edge and the end part of the connecting bobbin or the connecting terminal is controlled, a hydraulic pump is started for pressurizing, after the pointer of a pressure gauge points at the position meeting the requirements, the pressurizing is stopped; then, the lead wires are plugged in the central position of the connecting bobbin from the other end, and then the cold pressure welding is carried out. By adopting the welding method, the copper-aluminum composite material lead wires and copper down-lead wires are firmly abutting-jointed, and electrochemical corrosion can be effectively prevented at the contact position.

The invention provides a fire-fighting medium supply device and method for a substation fire-fighting robot. The fire-fighting medium supply device comprises a bearing mechanism, wherein a water supply mechanism, a foam supply mechanism and a water hose docking mechanism are borne on the bearing mechanism; the water supply mechanism comprises at least one fire-fighting water storage tank; the fire-fighting water storage tank is connected with a booster pump through a pipeline to provide pressure for water supply; a drain pipe of the booster pump is connected with a water hose through a joint;the foam supply mechanism comprises at least one foam storage tank; the foam storage tank is connected with a foam pump through a pipeline; a drain pipe of the foam pump is connected with a water inlet pipe of the booster pump; the water hose docking mechanism comprises a quick-plug joint arranged at the end part of the water hose and a supporting seat arranged on the bearing mechanism; a plurality of columns distributed circumferentially are arranged on the supporting seat; the water hose can be accommodated in the center of each column; two oppositely arranged pressing plates are arranged atthe end part of each column; the pressing plates can rotate relatively; and the quick-plug joint is movably clamped in the inner edge of each pressing plate.

The invention belongs to the field of medical equipment, and particularly relates to a medical bed for patient transfer and treatment and a use method thereof. The medical bed comprises a treatment bed and a transfer bed which can be in butt joint and separated, wherein a guide mechanism used for guiding when the transfer bed and the treatment bed are connected is arranged between the transfer bedand the treatment bed; a transfer bed locking mechanism is arranged between the transfer bed and the treatment bed; and the transfer bed locking mechanism is used for locking when the transfer bed and the treatment bed are in butt joint and unlocking when the transfer bed and the treatment bed are separated. The medical bed has the beneficial effects that the transfer bed and the treatment bed are in butt joint easily and conveniently, and the butt joint is stable and high in accuracy, so that the transfer and treatment of a patient are facilitated; and the patient does not need to move frequently, so that the difficulty of transfer treatment of the patient is reduced.

The invention discloses a clamping device for fluorescent stick detection, comprising a fixed plate, the side wall of the fixed plate is provided with a side plate, the end of the fixed plate is provided with a mounting groove, the end of the fixed plate is provided with a fixed tube, the fixed tube One end of the fixed tube is provided with a fixed ring, the fixed ring is set on the outer wall of the end of the fixed plate, the fixed tube is installed at the position of the installation groove, and the side wall of the other end of the fixed tube is provided with a slot and a buckle groove, and the slot and the buckle groove are connected The fixed pipe and the fixed ring are integrally structured; the fixed pipe is fitted with a connecting column, and a bolt is provided between the connecting column and the fixed pipe, and the bolt is arranged at the position of the buckle groove. The installation tube is provided with an opening on the side wall of the installation tube, and an installation cavity is provided at the axial position of the installation tube. The invention can set the fluorescent stick to be detected in the installation cavity of the installation tube, and adjust the tension of the installation tube through opening the cavity, so that the fluorescent stick can be installed more conveniently and firmly.

The invention provides an asymmetric type on-line installing device and method for an underwater three-stage separation system. The asymmetric type on-line installing device and method are applied to rapid abutting joint and on-line installing of the underwater separation system. Gas cell bodies of the on-line installing device are designed as double asymmetric type gas cells, follow-up drifting is completed through spherical offset adjusting mechanisms and horizontal offset of the on-line installing device is adjusted automatically; and according to the balance action of the gas cell bodies and a balance pipe, vertical offset is adjusted automatically, so that stable hoisting is realized. Three-point type hoisting, prying, centering and supporting of an underwater three-stage separation device are completed through connecting rigging, an upper hoisting base and a lower hoisting base. Three-set fishing cylinders and traction pipes are arranged on the hoisting base in a three-point mode to form three-cylinder automatic centering mechanisms. The fishing cylinders are matched with the traction pipes to realize hoisting and automatic centering in centering operation. Locking mechanisms are arranged in the fishing cylinders to realize automatic locking in the centering operation. The asymmetric type on-line installing method comprises the step of conducting the whole set of the operation process relying on the installing device, so that rapid on-line installing of the underwater separation system is finished.

The invention discloses a lock-joint moving device for welding of a seamless rectangular pipe. The lock-joint moving device comprises a butt joint pipe; the two ends of the butt joint are both provided with supporting frames; the two ends of the bottom of each supporting frame are provided with installation plates; the bottoms of the installation plates are provided with installation frames; the lower portions of the installation frames are provided with installation shafts; and the outer shaft faces of the installation shafts are sleeved with moving wheels; a supporting pipe is vertically arranged on the butt joint pipe; the end of the supporting pipe is provided with a display frame; side pipes are vertically arranged at the two ends of the display frame; bottom slices are arranged at the bottom of the side pipes and provided with buckling slices; buckling grooves are formed between the buckling slices and the bottom slices, and the cross section of each buckling groove is rectangular; and lock pins are arranged between the two ends of the buckling slices and the two ends of the bottom slices. Through the lock-joint moving device, the to-be-welded seamless rectangular pipe can be placed between the bottom slices and the buckling slices, butt joint between the bottom slices and the buckling slices can be firmer through the lock pins, and the seamless rectangular pipe can be subjected to firm lock joint through the bottom slices and the buckling slices.

The invention discloses a socket connector of a double-row needle structure, comprising a base rubber core, a floating rubber core arranged in the base rubber core and an elastic socket terminal arranged between the base rubber core and the floating robber core; a base rubber core opening with length and width both greater than those of the floating rubber core is formed in the middle of the baserubber core; the floating rubber core is arranged in the base rubber core opening by the elastic socket terminal. The invention further discloses a socket connector protecting structure of a double-row needle structure. The socket connector has strong practicability, is more labor-saving and smooth in plugging, firmer in butt joint and more steady in contact, and can improve the transmission stability; the floating rubber core has a three-dimensional movement amount of plus or minus 0.5mm in the base rubber core; and therefore, the socket connector is applicable to use in an environment with high vibrating requirement and the practicability of the socket connector is improved.

The invention discloses a solar cell panel clamp-connecting device which comprises an abutting plate. A first side plate is arranged on one side of the abutting plate, a second side plate is arranged on the other side of the abutting plate, and reinforcing plates are arranged among the abutting plate, the first side plate and the second side plate. An air cylinder is arranged on the outer side wall of the second side plate, a telescopic shaft is arranged at the front portion of the air cylinder, a buckle seat is arranged at the end of the telescopic shaft, a limiting block is arranged at the end of the second side plate, and a cushion block is arranged between the limiting block and the buckle seat. A limiting seat is arranged at the position of the outer side wall of the buckler seat, a groove is formed in the outward orientation face position of the limiting seat, a clamp-connecting mechanism is arranged at the outward orientation face position of the limiting seat and comprises a clamping seat, a clamping groove is formed in one end of the clamping seat, and the other end of the clamping seat is clamp-connected at the groove. The cushion block and the buckle seat can be limited and installed through the limiting block. A user can clamp and connect the clamping seat at the outer side wall position of a solar cell panel through the clamping groove and accordingly clamp and connect the solar cell panel conveniently and firmly.

The invention discloses a direction-changing interfacing dust suppression hoist which comprises a lifting tower, a lifting motor, a lifting platform, protective plates and a counterweight; lifting guide rails are arranged on the two sides of the lifting tower respectively; the lifting platform is arranged on the protective plates; the protective plates are arranged on the lifting guide rails respectively; a brake unit is arranged among the lifting platform and the lifting guide rails; a belt is connected between the brake unit and the counterweight; the lifting motor is arranged on the top ofthe lifting tower; the belt is arranged on the lifting motor; the lifting platform is provided with a car; the car comprises a car body, opening and closing drive sources, enclosure doors and rollers;the two side surfaces of the car body are opened; the opening and closing drive sources are inverted on the car body; the enclosure doors are arranged on the opening and closing drive sources respectively and are arranged in enclosure rails arranged at the openings of the car body respectively; and the rollers are arranged at the bottom in the car body. The direction-changing interfacing dust suppression hoist provided by the invention can realize horizontal and vertical automatic conveying, is safe and stable in the conveying process and can effectively inhibit generation of raising dust.

The invention discloses a right-angle support and relates to the field of hardware accessories. The right-angle support comprises a columnar supporting body. A bent right angle is arranged on the supporting body. One end of the supporting body is a fastening end. The other end of the supporting body is a matching end. A thread is arranged at the end of the fastening end. A stress release hole is further formed in the fastening end. A matching plane is arranged on a rotation surface of the matching end. A positioning key groove is formed in the matching plane. A rotation groove is further formed in the matching end. The right-angle support is reasonable in structure, flat in appearance, high in connecting strength, firm in butt joint and not liable to loosen; and in addition, installation is easy, the service life is long, the manufacturing cost is low, and popularization is easy.

The invention discloses an underwater flow meter based mounting structure, which comprises a flow meter module connected with a flow passage connector. A mounting clamping jaw is arranged on the outerwall of the flow passage connector and comprises at least two clamping fingers which are sequentially and annularly distributed to form the mounting clamping jaw. The tail portion of each clamping finger is rotationally connected with the flow passage connector, the head of each clamping finger extends opposite to the flow meter module, and a clamping jaw control ring slidably and externally sleeves the flow passage connector and externally holds and is abutted against all clamping fingers. The clamping jaw control ring slides axially along the flow passage connector to shift each clamping finger to rotate, so that heads of the clamping fingers are opened or closed radially. The underwater flow meter based mounting structure has advantages that after butt joint of the flow passage connector and a measured pipeline, the clamping jaw control ring enables the mounting clamping jaw to be closed to hold the pipeline or enables the mounting clamping jaw to be opened, and convenience in firmbutt joint and quick demounting of the flow meter module and the pipeline is achieved.

The invention discloses a ceramic membrane drum adjusting arm device for sewage treatment. The device includes a pedestal, a plurality of fixed cylinders are disposed at the bottom of the pedestal, afixed shell is disposed at the top of the pedestal, side pipes are disposed at both sides of the fixed shell, side frames are disposed at both sides of the fixed shell top, the lateral parts of the side frames are equipped with side plates, the side plates are connected to first adjusting arms, one ends of the first adjusting arms are equipped with adjustment columns, the adjustment columns are mounted at the lateral parts of side plates, the other ends of the first adjusting arms are connected to second adjusting arms, the ends of the second adjusting arms are equipped with positioning discs,the axis centers of the positioning discs are equipped with plug slots, and the positioning discs are provided with several positioning holes. The device provided by the invention is convenient for butt joint of positioning rings through positioning pipes, the adjusting arms utilizes the adjustment columns to rotate around adjustment bolts so as to realize transmission, the adjusting arms can achieve vertical lifting fine adjustment of a ceramic membrane drum, thus being convenient for more flexible lifting fine adjustment of the ceramic membrane drum.

The invention discloses a drying device for the inner wall of a copper pipe, which comprises a blowing tube, the rear end of the drying tube is processed with an external thread, the front end of the drying tube is in the shape of a cone, and the front end of the vertical drying tube is equipped with a pressure Tighten the screw, the rear end of the drying cylinder is connected to the compression pump through the external thread and tightened by the nut, the cone at the front end of the drying cylinder is inserted into the copper pipe and tightened by the compression screw. The cylinder wall of the drying cylinder is punched with a hole, and a hex nut is welded on the hole, and the jack screw is assembled in the nut and rotates downward to compress the cylinder wall. The invention has the advantages of simple structure, firm butt connection and no air leakage, thereby improving production efficiency.