60results about How to "Prevent circumferential rotation" patented technology

The present application relates to a kind of rocket engine injector thin-wall milling self-positioning fixture and assembly method, it mainly includes upper positioning tire body component, conical surface expansion ring, tire unloading bottom plate, pressing cover plate, tire unloading lifting ring, pressing bolt, expansion screw, lower positioning bottom plate component, locking bolt, long fixed bolt, lower positioning bottom plate component is fixed in machine tool workbench by locking bolt long-term, always not disassembled.Product is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion sleeve before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thinn

This utility model relates to the field of children's vehicle technology, specifically to a balance bike, which mainly includes: a frame, a front connecting seat, a seat connecting seat, and a rear connecting seat. By setting a handlebar adjustment component, the handlebar height can be adjusted independently with ease to accommodate children of different heights, which helps to expand the product's applicable population and service life. In cooperation with the handlebar orientation mechanism, the handlebar and seat bar can only move axially, effectively avoiding circumferential rotation, ensuring the smoothness and accuracy of the adjustment process, and providing a better user experience. It solves the problem of extremely unsmooth adjustment process and difficulty in accurately and quickly positioning to the required height.

The utility model relates to the technical field of water faucet, concretely relates to a bathroom faucet convenient to assemble, technical solution main points include valve body, valve core subassembly, end cover and handle, the hot water flow channel, cold water flow channel, water outlet flow channel and installation groove are arranged in the valve body, the tank bottom of installation groove sets up hot water hole, cold water hole and water outlet hole, the isolation department is arranged in the valve body, the isolation department is symmetrically arranged two and separates hot water and cold water, two isolation departments form the hook groove area, the canyon area, hot water hole, cold water hole are in the hook groove area, and water outlet hole is in the canyon area, and at least two positioning grooves are arranged on the tank bottom, the positioning column of two with the positioning groove insertion is arranged on the valve core subassembly, makes the water pass hole of valve core subassembly and hot water hole, cold water hole and water outlet hole mutually coincide. The utility model realizes reliable convenient assembly through above -mentioned structure.

This invention belongs to the field of fiber optic connector technology and discloses a high-return-loss fiber optic connector and its manufacturing method. The connector includes a mounting sleeve with an inner cylinder inside. An outer cylinder is threaded onto the inner cylinder. A positioning ferrule is located inside the inner cylinder, and an optical fiber cable is located inside the positioning ferrule. A spring is located on one side of the positioning ferrule. A mounting base is threaded onto the inside of the mounting sleeve. This invention uses a locking lever to simultaneously engage the inner cylinder and the mounting sleeve, achieving anti-loosening positioning of multiple components. When the anti-loosening mechanism is triggered, the rotating ring synchronously drives the clamping plate to clamp the optical fiber cable. External tensile force is directly borne by the clamping mechanism and is not transmitted to the positioning ferrule. The overall structure has strong linkage, effectively preventing axial movement and circumferential rotation of the positioning ferrule, ensuring the mating accuracy and return loss stability of the positioning ferrule, and significantly improving the connector's tensile and vibration resistance.

The utility model relates to an anti-mistaken-unlocking energy storage connector, which comprises a plug and a socket which are mutually plugged, and the side wall of the plug is provided with a button for unlocking the plug and the socket. The plug is detachably sleeved with an outer cover shell, and the outer cover shell is located on the outer side of the button. At least one elastic clamping piece is arranged on the plug, and a clamping hole matched with the elastic clamping piece is formed in the outer housing; the outer cover shell can move to the clamping hole relative to the plug to be clamped with the elastic clamping piece in a matched mode, and the outer cover shell is locked on the plug; when the outer cover shell and the plug are kept in a locked state, the elastic clamping piece can move relative to the outer cover shell to retreat from the clamping hole under the action of external force, the outer cover shell and the plug are in an unlocked state, and the outer cover shell can move relative to the plug. According to the scheme, the plug of the energy storage connector is sleeved with the outer cover shell, the outer cover shell is located on the outer side of the unlocking button, the plug and the socket can be unlocked only when the outer cover shell is unlocked through a tool, and the use safety of the energy storage connector is improved.

The invention provides a valve conveying system and an operation method, the valve conveying system comprises a catheter assembly, a driving device and a rope locking assembly, the catheter assembly is connected to the driving device, the rope locking assembly is connected to the near end of the driving device, the valve conveying system is provided with a containing cavity, and the catheter assembly, the driving device and the rope locking assembly penetrate through the containing cavity; when the valve is loaded, a pull rope of the valve penetrates through the containing cavity, the rope locking assembly locks the end of the pull rope, and the driving device can drive the valve to move into the catheter assembly. When the valve is released, the driving device is driven to enable the valve to move out of the containing cavity and to be released at a designated position, and the rope locking assembly unlocks the end of the pull rope. According to the valve conveying system, the functions of loading, delivering, positioning, recycling and the like of the prosthetic valve can be achieved through active driving, the structure is simple, the response speed is high, operation is stable, the control precision is high, and the operation efficiency of an operator is improved.

In order to solve the problem that the twisting resistance is obviously insufficient after the existing pole and the cover plate are mounted and matched, the utility model provides a battery cover plate, which comprises a cover plate assembly, a pole and a sealing element, the pole comprises a pole piece and a pole body, the pole body is connected to the pole piece and extends in the direction perpendicular to the plane where the pole piece is located, a first through hole is formed in the cover plate assembly, a second through hole is formed in the position, corresponding to the first through hole, of the sealing piece, the sealing piece is embedded into the first through hole, and the pole body is inserted into the second through hole. A first limiting part is arranged on the pole piece, a second limiting part is arranged on the cover plate assembly, and the first limiting part and the second limiting part form a first bonding structure; according to the application, the first bonding structure is formed by the second limiting part and the first limiting part, so that circumferential rotation of the cover plate assembly and the pole is avoided, a gap is not easy to appear between the pole and the cover plate assembly, the sealing performance of the pole is improved, and electrolyte is prevented from permeating through the gap.

The present application relates to the technical field of loading and unloading machine, especially to a multi-stage telescopic sleeve mechanism of a nuclear power plant loading and unloading machine, which comprises an outer sleeve, an inner sleeve and at least one intermediate layer sleeve between the outer sleeve and the inner sleeve, the remaining sleeves outside the inner sleeve are provided with an on-off type automatic stop block device, and the remaining sleeves outside the inner sleeve are kept in a static state by the blocking and limiting of the on-off type automatic stop block device; the present application solves the problem that the telescopic sleeve stroke of deep core fuel operation is relatively long and the fixed sleeve cannot be relatively long due to process limitations; the problem that the fuel assembly cannot be loaded and unloaded because the multi-stage telescopic sleeve fuel assembly is still located in the second outer layer sleeve at a non-core station is solved; and the problem of the verticality and positioning accuracy of the multi-stage sleeve is solved.

The replaceable cream cosmetic box comprises an outer shell, an inner container, a tray, a lifting assembly and a locking piece, the inner container is detachably assembled in the outer shell, the lifting assembly is used for driving the tray to movably ascend and descend in the inner container, and the locking piece is in sliding fit in the circumferential direction of the outer shell. The locking piece is arranged on the outer shell and provided with a locking piece located between the outer shell and the inner container, the outer shell is provided with a limiting groove, the inner container is provided with a limiting block capable of being embedded in the limiting groove, the inner container is further provided with a clamping piece corresponding to the locking piece, and the locking piece can rotate to the position above the clamping piece to be used for limiting axial movement of the inner container. The paste cosmetic box can be replaced through the inner container and the outer shell which are detachably arranged, so that the cost is saved, and the use efficiency is improved. The arranged locking piece drives the locking piece to slide to limit the clamping piece on the inner container, and the matching firmness of the locked inner container and the outer shell is further improved through the matching of a limiting groove and a limiting block, namely the axial movement and circumferential rotation of the inner container are avoided.

The present invention belongs to the technical field of welded pipes, and discloses a high-strength welded pipe, including two welded pipe bodies, a fixing frame and two arc-shaped plates, and the two arc-shaped plates are wrapped between the two welded pipe bodies, one end of the two arc-shaped plates are fixedly connected with a connecting plate, and the two connecting plates are detachably connected, the interior of the fixing frame is provided with a first adjustment mechanism for driving the two arc-shaped plates to move relative to each other, and the upper and lower sides of each arc-shaped plate are provided with a protective mechanism for reinforcing the two welded pipe bodies. The present invention can wrap the gap between the two welded pipe bodies with the two arc-shaped plates, and at the same time, the positioning rod will be inserted into the corresponding positioning groove, so that the positioning rod strengthens the surface of the welded pipe body, prevents the longitudinal movement of the two welded pipe bodies, better limits the longitudinal position of the welded pipe body, and can also prevent the circumferential rotation between the two welded pipe bodies, so that the two welded pipe bodies become a stable whole.

The invention discloses a hinge assembly and refrigeration equipment. The hinge assembly comprises a movable shaft and a groove body, the movable shaft is provided with a shaft body in sliding fit with the groove body; the whole cross section of the shaft body is flat and is provided with a long shaft and a short shaft, and the whole groove body extends along a curve; when the shaft body slides in the groove body, the extending direction of the long shaft is the same as the extending direction of the groove body at the corresponding position. According to the hinge assembly, movement of the door body in the opening process is achieved through the arrangement of the single shaft, movement control over the door body applying the hinge assembly in the opening process is achieved through the arrangement of the flat shaft body, the flat shaft body can prevent the shaft body from rotating in the groove body in the circumferential direction, and therefore the door body moves along the groove body in the initial stage of opening, and the door body is prevented from moving. The door body is prevented from being interfered by the external environment in the opening process, in addition, the extending direction of the long axis of the cross section of the shaft body is consistent with the extending direction of the groove body, and the door body can be opened more smoothly.

The utility model discloses an anti-rotation light-weight vacuum buffer rod which comprises a rod body, a shell, a neck bush and a reset spring, wherein the rod body and the shell are both made of aviation aluminum alloy materials, and the neck bush and the reset spring are made of polyformaldehyde materials. The neck bush is sleeved in the shell; the neck bush and the shell are injection-molded into a whole through a mold; a ventilation hole channel is axially machined in the rod body in a penetrating mode, and the rod body is composed of a threaded section, a spring limiting section, a buffering guide section and a rear tail section which are sequentially connected from top to bottom. The reset spring is sleeved in a sleeve hole of the neck bush, and an inner ring of the reset spring is sleeved on the spring limiting section of the rod body; an air pipe joint is spirally mounted on the threaded section; an anti-rotation limiting groove channel is axially machined in the outer circumferential face of the buffering guide section, and a protruding anti-rotation protruding rib is machined on the inner wall of a sleeve hole of the neck bush. The utility model has the advantages of high precision, low noise, no powder falling, light weight and long service life.

This invention relates to an indwelling needle for transcranial Doppler ultrasound imaging, belonging to the field of medical device technology. It solves the problems of existing three-way infusion connectors with rotary valves, which suffer from incomplete closure leading to crossflow and difficulty in achieving the accurate closure position. This invention includes an injection unit, a mixing unit, a control valve unit, a first mixing chamber unit, and a second mixing chamber unit. The control valve unit switches the preparation and delivery path of the bubble contrast agent. The first and second mixing chamber units work in conjunction with the first syringe to prepare and store the bubble contrast agent. Unlike existing technologies where the user holds the first and second syringes with both hands, pushing them against each other to mix the aspirated blood with saline and air to prepare the bubble contrast agent, this invention only requires one hand, facilitating the preparation of the bubble contrast agent.

The utility model discloses a kind of flow splitting cone subassemblies of aluminum alloy differential pressure casting mould, belong to casting technical field.The component includes: flow splitting cone;The point cold hole of axial extension in flow splitting cone;At least one threaded hole, at least one threaded hole is located in the rear end of flow splitting cone, for with the fastening bolt connection of bolt mounting hole passing through upper mould core, to realize the axial fastening between flow splitting cone and upper mould core;Flow splitting cone anti-rotation structure is set to the outer periphery of flow splitting cone, flow splitting cone anti-rotation structure is used to cooperate with the flow splitting cone stop rotation platform on upper mould core, to limit the circumferential rotation of flow splitting cone relative to upper mould core.The component is directly fastened by the threaded hole of flow splitting cone itself and fastening bolt, so that the huge hug force when ejection casting is shared by bolt, avoid the stress concentration of threaded portion, effectively prevent the fracture of thread, improve the reliability of flow splitting cone, to improve production efficiency.

The present invention relates to the technical field of spring processing equipment, and discloses an end burr processing mechanism for spring processing, comprising a base plate, a first movable plate and a second movable plate are slidably connected on both sides of the base plate, a first grinding wheel plate is fixedly installed on the top of the first movable plate, a second grinding wheel plate is fixedly connected on the top of the second movable plate, an axis plate is arranged in the middle of the first grinding wheel plate and the second grinding wheel plate, a fine grinding wheel is arranged on one side of the first grinding wheel plate, and the end burr processing mechanism for spring processing, friction is performed between the fine grinding wheel and the fixed grinding wheel, the rotating grinding wheel and the driving grinding wheel, wherein the inner ring of the spring and the outer ring of the mounting tube are fitted, the end of the spring and the outer ring of the mounting tube are in wide contact, the outer ring of the mounting tube limit the end of the spring, and can effectively prevent the end of the spring from being deflected after being rubbed during the movement of the mounting tube.

A guide cylinder protruding towards the center of a machine head is integrally arranged on the inner side wall of the machine head, one end of the guide cylinder extends towards the center of the machine head, the other end of the guide cylinder penetrates through the side wall of the machine head, an installation opening is formed in the outer side wall of the machine head, an upper coupler comprises a main body and an installation portion protruding outwards from the main body, and the installation portion comprises an installation face. The mounting part extends into the guide cylinder through the mounting opening, the fastener penetrates through the guide cylinder and the mounting part to fix the mounting part on the guide cylinder, the mounting surface is in close fit with the inner surface of the guide cylinder, and the length of the guide cylinder protruding towards the interior of the machine head is at least 5 mm. The upper coupler is fixed by the fastener, and the mounting part and the guide cylinder are in close fit to realize surface-to-surface contact, so that the acting force on the mounting part is uniformly dispersed to the inner surface of the guide cylinder through the mounting surface, the guide cylinder is not easy to damage, the fixing effect of the guide cylinder on the mounting part is ensured, and the upper coupler is firmly fixed and is not easy to loosen and fall off.

The invention relates to an anti-explosion direct-acting electromagnetic valve which comprises a valve body. The sliding valve comprises a movable iron core and a valve element part, a mounting hole is formed in the movable iron core, a cone top column is arranged in the mounting hole, a thin-wall hole is formed in the valve element part, and the thin-wall hole is used for being in extrusion deformation with the cone top column so that the valve element part can be in interference fit with the mounting hole of the movable iron core. The sleeve is provided with a static iron core and a step surface; the anti-explosion shell comprises an anti-explosion shell body and an anti-explosion shell cover, the anti-explosion shell body is provided with a step matching surface which is matched with the step surface in an abutting mode, and at least two protruding columns are distributed in the anti-explosion shell body in the circumferential direction; at least two grooves are formed in the bottom of the excitation shell in the circumferential direction, the grooves are matched with the convex columns in a concave-convex mode, and a coil component is arranged in the excitation shell. The valve core part and the movable iron core adopt a split type structural design, so that the processing and manufacturing difficulty of the slide valve is effectively reduced; and the explosion-proof shell is arranged, so that the device can be applied to inflammable and explosive medium working conditions and the like. The anti-explosion shell is matched with the step face of the sleeve in an abutting mode, and therefore the sleeve is limited in the axial direction of the sliding valve.

The utility model relates to motor technical field discloses a kind of brushless motor, the brushless motor above-mentioned includes shell, stator assembly, rotor assembly and end cover assembly. Shell is provided with accommodating cavity and the opening being communicated with accommodating cavity;Stator assembly is installed in accommodating cavity;Rotor assembly is worn in stator assembly;End cover assembly is covered in the opening;Elastic limit gasket is arranged between stator assembly and end cover assembly, elastic limit gasket has mutually diverging first abutment surface and second abutment surface, first abutment surface and the upper end surface of stator assembly elastically abut, second abutment surface and end cover assembly elastically abut, to stator assembly is fixed in accommodating cavity.The utility model's brushless motor avoids that stator assembly occurs axial displacement and circumferential rotation relative to shell, and need not to wait for glue solidification and eliminates the failure risk caused by leaking glue.

The utility model discloses a combined connector of a soft infusion bag, which relates to the technical field of medicine packaging and comprises a connector body, a rubber cushion block and a cover body. The connector body comprises a cylindrical pipe, a connecting pipe and a rhombic pipe. An annular rib is fixedly arranged on the inner wall of the cylindrical pipe, and an annular supporting bulge is arranged at one end of the cylindrical pipe; the upper end of the rubber cushion block is truncated cone-shaped; a containing cavity is formed in the lower end of the cover body, an easy-to-fold handle is arranged on the outer top of the cover body, and an annular groove is formed in the outer side wall of the lower end of the cover body. The outer diameter of the rubber cushion block is smaller than the inner diameter of the cylindrical pipe and larger than the outer diameter of the annular supporting protrusion. The inner diameter of an opening formed after the easy-to-break handle is broken is smaller than the outer diameter of the top of the rubber cushion block. When the lower end of the cover body is embedded in the cylindrical pipe, the annular convex edge is clamped in the annular groove; the containing cavity of the cover body abuts against the top of the rubber cushion block. And the maximum outer diameter of the cover body is the same as the outer diameter of the cylindrical pipe. The structure is compact, materials are few, the welding area is small, hot melting is easy, assembling is easy, fast and efficient, the technology is simple, and energy consumption is low.

The invention relates to the field of electrical equipment, and discloses a roller dismounting and mounting structure and cleaning equipment, the roller dismounting and mounting structure can conveniently realize dismounting and mounting of a roller, the operation is simple and convenient, the user experience is good, the structure is compact, the occupied space is small, the side edge structure of the roller can be thinner, the distance between the roller and the wall edge is reduced, and the cleaning effect is improved. The roller dismounting and mounting structure is applied to the cleaning equipment, the cleaning equipment comprises a roller assembly, the roller assembly comprises a second support and a roller, the roller is detachably arranged in the second support, the roller dismounting and mounting structure comprises a cover body, a locking assembly and a pop-up assembly, the cover body is arranged at one end of the roller, the locking assembly is arranged in the second support, and the pop-up assembly is arranged in the second support. The locking assembly is used for locking / unlocking the cover body to disassemble and assemble the roller, the popping assembly is arranged at the other end of the roller, and the popping assembly pops the roller out of the second support when the locking assembly unlocks the cover body.

The utility model discloses a tool for assembling an insulator, which comprises a tool shell capable of limiting an outer conductor of an oscillator, the outer conductor of the oscillator is placed at the upper end of the tool shell, and when a limiting groove on the tool shell is matched with a positioning part on the outer conductor of the oscillator in place, the first-step positioning of the outer conductor of the oscillator is met; when the insulator is installed, the end portion of the insulator is in contact with the end portion, close to the base, of the base, the protruding portion is further made to be matched with the receding groove, the protruding portion limits the installation position of the insulator, circumferential rotation of the insulator is avoided, alignment installation between the insulator and the outer conductor of the vibrator is achieved under the cooperation constraint of the tool shell and the base, and the installation efficiency is improved. According to the installation tool, the elastic assembly is arranged, a force application space for pressing the insulator downwards is reserved in the assembling process, downward force application ensures that the installation position of the insulator and the interior of the tool shell is in place, the installation tool can achieve assembling alignment of the insulator and the vibrator outer conductor, follow-up installation of the inner conductor is not affected, and the rate of finished products is increased.

The utility model belongs to the technical field of building materials, and particularly relates to a welding stud beneficial to vertical welding, which comprises a stud body and a stud cap, one end of the stud body is arranged on the stud cap, and the other end of the stud body is uniformly provided with a plurality of drainage grooves extending to the edge of the end face. An arc striking body protruding out of the end face is arranged at the position where the drainage grooves converge at one point, and the nail cap is provided with a plurality of limiting open holes formed in the length direction of the nail body. A drainage groove is formed in the welding end of the nail body to evenly guide an arc striking body which is molten firstly to the edge of the end face, and the situation that the nail body cannot be perpendicularly arranged on a steel frame due to uneven distribution of molten fluid can be avoided. And meanwhile, the nail cap is also provided with a limiting open hole for positioning when being matched with a welding nail gun, so that the perpendicularity of the welding nail can be effectively ensured, the welding nail is prevented from rotating in the circumferential direction during solidification connection, and the connection quality of the welding nail and the steel frame is improved.

The invention discloses a shell protection integrated mineral fireproof bus duct connector which comprises a front side plate, four groups of connecting conductors and a rear side plate which are arranged pairwise, four groups of connecting conductors which are adjacent pairwise, and four groups of photo groups which are formed in pairs and are respectively and mutually conducted with phases of bus duct body busbars on two sides, a convex ceramic insulating block is sleeved at the center of each photo group; insulating phase separation plates are respectively arranged between the inner side surfaces of the front side plate and the rear side plate and the adjacent connecting conductors and between every two adjacent photo groups; a PE grounding busbar is arranged in the center of the bus duct body, and a PE connecting sheet used for conducting and connecting the PE grounding busbar inserted into the two sides is arranged in the middle of the sheet group; and the insulating partition plate adopts a mica plate subjected to waterproof treatment, so that the insulating partition plate is resistant to high temperature and waterproof, the insulating performance between the busbar and the connecting conductor and the stability of electrical connection are improved, and the reliability of the connector is effectively improved.

The utility model relates to the technical field of cableway operation, and provides an unhooking rope clip and a main shaft connecting device thereof, and the unhooking rope clip main shaft connecting device comprises an inner clip which is provided with a shaft sleeve, and the peripheral side of the shaft sleeve is provided with a first fixing hole; the first end of the main shaft is inserted into the shaft sleeve, a second fixing hole is formed in the peripheral side of the main shaft in the first direction, the second fixing hole corresponds to the first fixing hole, and an included angle exists between the first direction and the axis direction of the main shaft; the first connecting pin is matched with the first fixing hole and the second fixing hole respectively, and the main shaft is connected with the inner holding clamp in the mode that the first connecting pin sequentially penetrates through the first fixing hole and the second fixing hole; after connection, the main shaft can be prevented from axially moving in the shaft sleeve and can be prevented from circumferentially rotating in the shaft sleeve, the reliability of connection between the main shaft and the inner holding clamp is ensured, and the running safety of equipment is improved.

The present invention relates to the technical field of camshaft processing, and discloses a camshaft deep hole processing device, including a machine base, a circumferential clamping assembly is arranged on the machine base, the circumferential clamping assembly includes a slide rail, a clamping cylinder, a toothed disc, a rotating shaft, a gear, and a sleeve, a clamping block is arranged on the clamping cylinder, a sliding hole is arranged on the toothed disc, a connecting rod is arranged in the sliding hole, the connecting rod is connected to the clamping block, a connecting key is arranged on the rotating shaft, the gear is meshed with the toothed disc, the gear is connected to the sleeve, the sleeve is sleeved outside the rotating shaft, a keyway is arranged on the inner wall of the sleeve, the sleeve is rotatably connected to the ear plate, and the ear plate is connected to the clamping cylinder. The present invention can limit and fix the camshaft in two directions, ensure the stability of the position of the camshaft during processing, avoid circumferential rotation and axial movement, ensure the clamping effect, and has strong practicality and adaptability.

The utility model relates to a stereo garage lifting platform positioning device. The stereo garage lifting platform positioning device comprises a sliding device and a limiting device which are arranged between a guide sliding way and a lifting arm. The guide slideways are channel steel; an opening of the channel steel faces the lifting arm, and the sliding device comprises a radial guide device and a circumferential guide device; the limiting device comprises a positioning hole, a positioning rod, a guide sleeve, a connecting rod, a turntable and a speed reducer; the edge part of the turntable is hinged with the other end of the connecting rod; the radial guide device comprises a first pin shaft and a first roller; the circumferential guide device comprises a second roller, a second pin shaft and a bracket; the lifting platform has the beneficial effects that when the lifting platform is flush with the parking platform and a vehicle needs to be parked and picked, the telescopic positioning rods arranged on the lifting arms are inserted into the positioning holes, so that hard limiting of the lifting arms up and down is achieved, the lifting platform is prevented from shaking, and potential safety hazards are eliminated.

The utility model relates to the field of splashproof faucet discloses a faucet with splashproof function, including faucet main part, the front bottom of faucet main part is fixedly installed with bubbler through adjusting assembly, and adjusting assembly includes adjusting pipe and adjusting sleeve, and adjusting pipe sleeve sets in the front bottom of faucet main part, and adjusting sleeve is connected in the outer wall of adjusting pipe slidingly, and the left and right sides of adjusting pipe are all fixedly connected with limiting rod, and the outer wall of two groups of limiting rods is connected with limiting block slidingly, and the left and right sides of the front surface of adjusting sleeve close to the middle of top end are all fixedly connected with positioning rod. In the utility model, by removing the limiting of adjusting sleeve, according to the height of the object of washing, the adjusting sleeve is pulled down, drives the bubbler to move down and is close to the washing article, shortens the falling distance of water flow and reduces the impact force, at this moment, the bubble mixing structure in the bubbler cooperates with the close-range water outlet, can reduce the water flow impact force, further reduces the splashproof water effect.

The utility model relates to the technical field of tail gas detection, in particular to a motor vehicle tail gas detection device which comprises a tail gas detection machine, a connecting hose is connected to the right side of the tail gas detection machine, and a quick connecting mechanism is connected to the tail end of the connecting hose and comprises a stainless steel gas collecting pipe and a sleeve. The stainless steel gas collecting pipe is fixedly connected to the tail end of the connecting hose, the annular face of the stainless steel gas collecting pipe is fixedly sleeved with a sleeve, the sleeve is sleeved with an adjusting assembly, a locking assembly is arranged on the right side of the adjusting assembly, and a gas collecting head made of rubber and of a conical structure is arranged at the right end in the stainless steel gas collecting pipe. Through the designed quick connecting mechanism, an operator can quickly and conveniently connect the tail gas detection device to the tail gas pipe of the motor vehicle without a tedious manual sleeving process, so that the working efficiency is greatly improved, and the operator does not need to be in close contact with the tail gas pipe, thereby reducing the risk of sucking harmful tail gas and ensuring the safety of the motor vehicle. And better protection is provided for the health of operators.

The utility model relates to the technical field of intelligent manufacturing of steel bridges, in particular to a polishing and derusting device for intelligent manufacturing of steel bridges, which comprises a bottom plate, supporting rods are fixedly connected to the left side and the right side of the upper end face of the bottom plate, supporting assemblies are mounted on the upper end faces of the two supporting rods, and an external water source enters a splitter plate through a water guide pipe. And spraying is conducted through a plurality of spray heads, so that the grinding position is cooled, it is ensured that the surrounding environment of equipment is low, the service life of the equipment is prolonged, meanwhile, rust on the outer wall of the pipe fitting is conveniently washed, washing waste water is conveniently collected by a base at the bottom, and the surrounding environment is prevented from being affected. Then the electric push rod is started to drive the rotating roller to ascend and abut against the outer wall of the pipe fitting, then the rotating roller is started to rotate, the pipe fitting is driven to rotate in the circumferential direction, polishing and rust removing are conducted on the pipe fitting in all directions, and the equipment is simple in structure, convenient to adjust, high in automation degree and high in practicability.

The invention relates to the technical field of windowing sidetrack drilling, in particular to an integrated windowing sidetrack drilling whipstock. Comprising a sleeve fixed to the lower end of a coiled tubing, the sleeve is communicated with the coiled tubing, a pressure switch assembly is arranged in the sleeve, the lower end of the sleeve is fixedly communicated with a screw motor, a milling shoe is fixed to the output end of the lower side of the screw motor, a spline shaft is concentrically fixed to the upper end of the milling shoe, the spline shaft is sleeved with a connecting ring, and the spline shaft is in spline connection with the connecting ring. The connecting ring is in elastic sliding sealing connection with the whipstock through a vertical rod, an inclined face is machined at the upper end of the whipstock, and the lower end of the whipstock is rotationally connected with an anchor. According to the whipstock, windowing sidetrack drilling can be achieved under one pipe column, sidetrack drilling time efficiency can be improved, cost can be reduced, the anchor can be anchored in a well and conduct axial positioning on the whipstock during windowing sidetrack drilling, and meanwhile the whipstock can be stabilized in the well to prevent circumferential rotation of the whipstock during windowing sidetrack drilling.