81results about How to "Avoid loosening" patented technology

The utility model discloses an efficient energy-saving heating ventilation air conditioner pipeline connecting structure, and relates to the technical field of heating ventilation air conditioner pipelines, the efficient energy-saving heating ventilation air conditioner pipeline connecting structure comprises a first pipeline and a second pipeline, one end of the first pipeline is fixedly connected with a first butt joint seat, and one side of the first butt joint seat is provided with an annular butt joint groove; a second butt-joint seat is fixedly connected to one end of the second pipeline, an annular butt-joint plate is arranged on one side of the second butt-joint seat, a sealing cushion layer is fixedly attached to the side, away from the second pipeline, of the butt-joint plate, the butt-joint plate is matched and clamped with the butt-joint groove, and the sealing cushion layer abuts against the deep position in the butt-joint groove; four clamping grooves are formed in the outer side of the circumference of the first butt joint seat at equal intervals, four mounting grooves are formed in the outer side of the circumference of the second butt joint seat at equal intervals, and the size of the mounting grooves is matched with that of the clamping grooves. When a pipeline is connected and locked, a threaded fastener and a matched mounting tool are not needed, so that time and labor are saved, and the efficiency is higher.

The utility model relates to the technical field of sneakers, in particular to an anti-skidding sneaker which comprises a vamp and an adjusting mechanism. A shoe tongue and a fixing shell are arranged on the vamp, and a partition plate is arranged in the fixing shell; the adjusting mechanism comprises a rotating shaft rotationally arranged in the fixing shell, a ratchet wheel coaxially arranged on the rotating shaft, a spring bolt used for being connected with the ratchet wheel in a clamped mode, a connecting rod arranged on the spring bolt, a protruding ring coaxially arranged on the connecting rod, a supporting plate arranged on the partition plate and a spring with the two ends arranged on the protruding ring and the supporting plate correspondingly. The two fixing frames are arranged on the partition plate, and the two guide blocks are symmetrically distributed on the convex ring; the end of the spring bolt is matched with a tooth groove of the ratchet wheel, the connecting rod penetrates through the supporting plate and is slidably connected with the supporting plate, and the guide block is slidably connected with the fixing frame. According to the utility model, the traditional knotting and fastening mode is changed to fasten the shoe tongue, so that the defect that the shoelace is easy to loosen during sports is avoided, and the safety is improved.

The utility model relates to an adjustable damping structure which comprises an output shaft, a driving motor, a damping piece and an adjusting assembly. The driving motor is connected with the output shaft and is used for driving the output shaft to rotate; the damping piece is installed on the output shaft and used for generating friction with the output shaft when the output shaft rotates. The adjusting assembly comprises a spring, a rotation stopping gasket and a locking nut which are sequentially installed on the output shaft, the damping piece is arranged on the side, away from the rotation stopping gasket, of the spring, and rotation stopping tooth-shaped parts which can be meshed with each other are arranged on the surface of the rotation stopping gasket and the surface of the locking nut. Wherein the output shaft is provided with a thread matched with the locking nut. The damping torque can be adjusted in real time, operation is easy and convenient, the anti-loosening function is achieved, it can be ensured that the damping torque is output stably, and use reliability is effectively improved.

The invention relates to the technical field of linear motors, in particular to an automatic folding mechanism of a linear motor, which comprises a first machine body, a fixing groove is formed in one side of the first machine body, an inserting mechanism is arranged in the fixing groove, a connecting groove is formed in the other side of the lower end of the first machine body, and a lifting mechanism is jointly arranged on two sides of the upper end in the connecting groove. A lifting plate is arranged on the lifting mechanism, and a rotating mechanism is arranged in the middle of the upper end of the lifting plate. When the linear motor is folded, the folded linear motor can be automatically and fixedly connected, the folded linear motor is prevented from being loosened and unfolded, the stability of the folded linear motor is improved, meanwhile, when the linear motor is unfolded for use, the folding position of the linear motor can be fixed, the situation that the folding position of the linear motor is bent is avoided, and the linear motor is convenient to use. The stability of the folding type linear motor when the folding type linear motor is unfolded for use can be ensured, and automatic restoration can be realized.

The invention relates to the field of medical instruments, in particular to a positioning and binding device for orthopedic reduction fixation, which comprises a bottom shell, positioning grooves are formed in the front side and the rear side of the upper end of the bottom shell, slave insertion holes are formed in the inner walls of the two sides of the front portion and the rear portion of the bottom shell, and first combination rings are fixedly connected to the outer walls of the two sides of the bottom shell. A carrying block is fixedly connected to the inner wall of the middle of the lower end of the bottom shell, and a covering mechanism is installed at the upper end of the bottom shell. The two locking mechanisms are arranged in the bottom shell, in the using process, rotating discs of the two locking mechanisms are twisted, then locking ropes are continuously twisted, the clamping plates are tightly bound to the limbs of a patient through the two locking ropes, the rotating discs are clamped in clamping grooves in the top disc in the fixing process, the locking ropes are kept in a locked state, and therefore the patient can be fixed conveniently. And in the later period of loosening, only the rotating plate needs to be rotated out of the clamping groove, the rotating disc is rotated reversely, and the process is convenient.

The utility model discloses a motor end cover with a heat dissipation structure, which relates to the technical field of motor accessories, and comprises an end cover body, the outer surface of the end cover body is annularly and fixedly connected with a plurality of heat dissipation fins, and the outer surface of the end cover body is provided with a cleaning mechanism matched with the heat dissipation fins. A plurality of scraping strips are arranged on the end cover body, a plurality of connecting lugs are fixedly connected to the outer surface of the end cover body in an annular array mode, mounting holes are formed in the outer surfaces of the connecting lugs, and self-locking mechanisms are mounted on the outer surfaces of the connecting lugs. The heat dissipation fins are arranged on the end cover body, dust and the like adhering to the surfaces of the heat dissipation fins can be scraped, the heat dissipation effect is prevented from being affected, through the arranged self-locking mechanism, after the end cover body is fixed, bolts can be self-locked, and the situation that the bolts are loosened due to vibration of a motor in the using process is avoided.

The utility model discloses a two-way pneumatic valve with a ring groove valve core, which relates to the technical field of two-way pneumatic valves and comprises a valve seat, fixing pipes are arranged at two ends of the valve seat, a servo motor is mounted on the left side of the valve seat, and an output end of the servo motor extends into the valve seat and is provided with a valve rod. A connecting plate is installed on the right side of the valve rod, a valve element is installed on the right side of the connecting plate, a first flange is installed on the right side of the fixing pipe, and a sealing mechanism for reducing fluid leakage is arranged on the right side of the first flange. According to the two-way pneumatic valve with the annular groove valve element, the sealing strip is placed on one side between the first flange and the second flange, and then the sealing strip is extruded by a bolt when the first flange and the second flange are connected, so that a gap between the first flange and the second flange is filled; and therefore, the gap between the first flange and the second flange is reduced, and the situation of fluid leakage is avoided.

The utility model relates to the technical field of wheel limiting equipment, in particular to a novel tire limiting structure which comprises a fixed seat, a limiting device and a front-drive locker, the fixed seat is long-strip-shaped channel steel, one end of the fixed seat is connected with a triangular lifting platform, a sliding support is arranged in the fixed seat in parallel, a front driving plate and a rear driving plate which can do reciprocating motion are arranged on the sliding support, the front driving plate and the rear driving plate are respectively and fixedly provided with a holding valve, and the front driving plate and the rear driving plate are connected through a telescopic spring; the limiting device is in a ladle shape, a cavity of the limiting device is matched with the lifting table in shape, the limiting device is connected with the rear drive plate through a rotary column, a limiting rod is arranged on the limiting device and perpendicular to the side face of the fixing base, and the limiting rod is provided with two triangular protection frames in a matched mode. The front-drive locking device is triangular, a pulley is arranged on the bottom face of the front-drive locking device, and the front-drive locking device is fixed to the side wall of the front-drive plate and located on the same side with the limiting rod. The utility model has the advantages of simpler structure, convenience in installation, higher stability and better applicability, and can be installed in a left-right interchangeable manner.

The invention relates to the technical field of femoral artery compression hemostasis nursing, and discloses a tumor postoperative femoral artery compression hemostasis nursing device which comprises a pressing frame, and a bandage component is arranged on the surface of the pressing frame; the bandage component comprises a center frame, the bottom of the center frame is fixedly connected with the top of a pressing frame, a through hole frame is arranged on the surface of the center frame, a cotton cushion is arranged below the pressing frame, an arc-shaped plate is inserted into the bottom of the cotton cushion, and a limiting hole is formed in the bottom of the arc-shaped plate. The cotton cushion is arranged at the top of the arc-shaped plate and makes contact with the legs of a patient, the comfort is improved, the legs of the patient can press the arc-shaped plate, the bandage is limited through the arc-shaped plate, and the stability of the bandage during hemostasis and compression is improved; the bandage penetrates through the through hole frame and is bonded and fixed through the magic tape, the pressing frame is fixed above the leg of the patient through the bandage, and after the pressing frame is placed, compression treatment can be conducted on the femoral artery of the patient through the compression component.

The utility model discloses an anti-falling adapter sleeve, which relates to the technical field of adapter sleeves and comprises an adapter bushing, a locking nut, a locking washer, a locking component and a positioning component. A strip-shaped opening is formed in the outer surface of the fastening bush, a threaded groove in threaded connection with the inner ring face of the locking nut is formed in the outer surface of the top end of the fastening bush, and the outer surface of the fastening bush is sleeved with the locking gasket. A fixing ring is fixedly arranged on the upper surface of the locking gasket, and the locking assembly comprises an insertion ring fixedly arranged at the bottom end of the locking nut and an annular insertion groove formed in the upper surface of the fixing ring and corresponding to the insertion ring. According to the anti-falling adapter sleeve disclosed by the utility model, the locking assembly is arranged, so that the aim of quickly and effectively locking the locking nut can be achieved in the actual mounting process of the adapter sleeve, the situation that the locking nut is loosened in the using process of the adapter sleeve is avoided, and the aim of preventing falling of the adapter sleeve can be achieved.

The utility model discloses an assembly type H-shaped steel column connecting structure applied to foundation pit engineering, which comprises a connecting mechanism arranged between two H-shaped steel main bodies, each H-shaped steel main body consists of two flanges and a web plate, the connecting mechanism comprises two rectangular plates and two U-shaped plates, the two rectangular plates are respectively positioned on the outer sides of the two flanges on the same side, and the two U-shaped plates are respectively positioned on the outer sides of the two flanges on the same side. The two U-shaped plates are located on the outer sides of the two web plates correspondingly, a plurality of mounting grooves are formed in the rectangular plate, driving rods are mounted on the inner sides of the mounting grooves in the rectangular plate, and threaded rods are fixed to one ends of the driving rods. Balanced supporting and stable positioning can be provided for connection through the rectangular plate and the U-shaped plate, so that the stability and durability of the whole structure are enhanced, in addition, the driving rod and the threaded rod are arranged on the inner side, the loosening situation possibly occurring when the driving rod and the threaded rod make contact with an underground soil layer is effectively prevented, and the reliability and long-term stability of connection are guaranteed.

The utility model relates to a door and window handle mounting seat of anti -loosening belongs to handle installation technical field, the door and window handle mounting seat of anti -loosening, include: the installation bottom plate, one side of installation bottom plate is connected with the installation shell, the anti -loosening mechanism is installed in the inside of installation shell, the surface of anti -loosening mechanism extends to the one side of installation shell away from installation bottom plate, one end of anti -loosening mechanism is penetrated to the outside of installation bottom plate, wherein, the anti -loosening mechanism includes the connection anti -loosening subassembly installed in the inside of installation shell, the door and window handle mounting seat of anti -loosening is formed with the inside connecting frame and the clamping block through the H -shaped protruding of the one side of circular seat close to the inside connecting frame and forms the clamping, keeps the stability of connection, wherein through the ring of circular seat surface, under the action of guide frame, in the rotation process, avoid the deviation loosening of circular seat, guarantee the stability of use.

The utility model discloses a luggage rack tolerance regulator, the upper portion inboard of cylinder is provided with annular boss, positioning sleeve tight cooperation fixed sleeve is located cylinder outside, is provided with the limit dog of the L shape that stretches upwards respectively in the lower part of positioning sleeve's left and right sides, is provided with the matched support on the upper portion of positioning sleeve, and this matched support is located respectively in the front and back sides of limit dog, is provided with the limit board that stretches outward respectively on this matched support, is provided with internal thread on the inboard wall of cylinder, the adjusting screw rod is through the screw rotation and is located on the internal thread of cylinder, is provided with annular limit seat on the bottom of adjusting screw rod, is seted up in the adjusting through -hole of adjusting screw rod, is provided with the snap spring in this adjusting through -hole, the utility model has the advantages of: not needing special fixed torque electric spanner, also can complete the installation of this tolerance regulator, and assembly is more convenient and fast, and need not be restricted by tool again.

The utility model discloses an improved ultrasonic transducer belongs to ultrasonic transducer field, including upper cover and lower cover, upper cover and lower cover are assembled together, and the part of upper cover is connected with lower cover is provided with ceramic wafer, and ceramic wafer is equipped with positive electrode piece and negative electrode piece, is equipped with adjustable mounting structure on lower cover, and the position of ceramic wafer on lower cover is installed with limit abutting structure. Through setting outer thread on lower cover, cooperation adjustable mounting structure, limit abutting structure and limit sleeve use, adjustable mounting structure screw thread connection is on outer thread, can carry out height adjustment, and then change the installation height of entire ultrasonic transducer, utilize limit abutting structure and form the abutting action to adjustable mounting structure, ensure that adjustable mounting structure can be more stably set on the outer thread on lower cover, avoid the situation that ultrasonic transducer appears loose in the operation, guarantee the use stability of ultrasonic transducer.

This utility model belongs to the field of PVC power pipe technology and discloses an aging-resistant PVC power pipe, including a multi-layer composite pipe body. The multi-layer composite pipe body comprises, from the inside out, a PVC base layer, a weather-resistant modified layer, and an outer protective layer. A connecting sleeve is installed at one end of the multi-layer composite pipe body. An installation ring is installed on the periphery of the end of the multi-layer composite pipe body near the connecting sleeve. A pair of installation blocks are installed around the periphery of the installation ring. One side of each installation block has a through groove. An installation ring is installed on the periphery of the end of the multi-layer composite pipe body away from the connecting sleeve. A pair of installation blocks are installed on both sides of the installation ring. One side of each installation block has a through groove. The device also includes an arc-shaped baffle and a locking mechanism. This device has a simple and reasonable structure, a novel design, and is easy to operate. It has high practicality and is easy to widely promote and use.

The utility model relates to the technical field of stainless steel valve castings, and discloses a stainless steel valve casting with an emergency flow choking structure, which comprises a valve body, a valve core is arranged in the valve body, a channel is arranged in the valve core, the upper surface of the valve body is fixedly connected with a connecting block, a rotating groove is arranged in the connecting block, and the rotating groove is fixedly connected with the valve core. A driving rod is arranged in the rotating groove, the lower end of the driving rod rotationally penetrates into the valve body, the lower end of the driving rod is fixedly connected with the valve element, a first grip is fixedly connected to the outer portion of the driving rod, a connecting plate is arranged on the outer portion of the driving rod, and through cooperation of the connecting plate, a fixing ring, clamping teeth, a clamping groove and other structures, the first grip is fixedly connected to the outer portion of the driving rod; the stability of the valve element is effectively guaranteed, so that the situation that an internal flow choking structure is loosened is effectively avoided, the flow choking effect is guaranteed, the stability is high, and the practicability is high.

The utility model discloses a double locking art knife relates to art knife field, including shell, moving part and locking subassembly, one end of shell is clamped and connected with the stop block, and one side of stop block is welded with the clamping plate, and the inside of shell is clamped and slid connection with blade, and the surface of blade is equipped with the groove, and the locking subassembly is fixed in the groove. The moving part is arranged on one side of the blade, and the moving part is connected with the shell in a clamped and sliding mode. According to the double-locking art knife, by arranging the connecting assembly and the locking assembly, in the use process of the art knife, structural connection is tight, the situation that a blade is loosened in the follow-up use process of the art knife is avoided, follow-up workers conveniently replace and maintain the blade, meanwhile, the art knife is provided with a double-locking structure, and the practicability is high. And the art knife is more stable during use, the situation that the blade is loosened in the subsequent moving process is avoided, the use process of the art knife is safer, and a worker can use the art knife conveniently.

This utility model relates to the field of trailer towing technology and provides a trailer-mounted RV anti-detachment device, including a towing hook and a rotating column. One end of the towing hook is equipped with an mounting plate. The anti-detachment device further includes: a snap fastener, fitted onto the towing hook; a splicing component, which has a two-part structure, one part located on the other end of the towing hook and the other part located at the bottom of the snap fastener; a U-shaped block, rotatably mounted on the bottom of the rotating column; and a fixing component located within the U-shaped block to fix the position of the towing hook and merge with the U-shaped block, further stabilizing the connection of the device. In this utility model, the installation design of the splicing component is more stable, and even if the bolts strip, there will be no interruption of traction. Simultaneously, bolt two and a positioning tube are used to limit the center block, preventing loosening during traction due to insufficient components.

This utility model relates to a fixture for fixing an antenna horn cavity, including a worktable and a fixing mold. A fixing base is fixed on the worktable, and the top surface of the fixing base has a vertically downward extending insertion hole. Multiple fixing molds of different sizes are provided, and each fixing mold has a mounting seat fixed to its bottom. Each mounting seat has a mounting rod at its lower end that can be inserted into the insertion hole. A holding mechanism is provided inside the fixing base to detachably and securely hold the mounting rod in the insertion hole. This utility model, by providing mounting seats adapted to the fixing base at the bottom of different types of fixing molds, allows different fixing molds to share the same mounting structure, and each fixing mold is easy to disassemble and replace. It eliminates the need to install multiple fixing molds simultaneously on the worktable, reducing space occupation on the worktable and lowering costs.

The utility model relates to the technical field of medicine production raw materials screening, and disclose a novel medicine production raw materials screening device, including base, the top of base and near the edge place even installation has a plurality of support spring, the top of support spring installs the mounting seat, the top of mounting seat is provided with a plurality of screen frame. Through the vibration of vibration motor drive arrangement, cooperation steel ball knocks the screen plate, prevents the raw material and blocks the hole, still can carry out the smashing to the pharmaceutical raw materials, and the screen plate screen hole size in a plurality of screen frames is different, realizes multistage screening, promotes screening efficiency and quality, through the four mounting plates that set up mounting seat top near the edge place, set up the clamping block card into screen frame card slot on the mounting plate, realize the quick fixing of screen frame, and the screen frame between up and down further strengthens the effect of installation through the recess and the inserted plate that set up, avoided the traditional through the support and bolt installation, long time vibration will appear the situation of loosening.

The utility model discloses a cable bridge support anti-seismic system, and relates to the technical field of cable bridge supports. The cable tray comprises a supporting bottom plate, supporting frames are arranged at the two ends of the supporting bottom plate, two auxiliary inclined supporting frames are arranged at the two ends of the supporting bottom plate, and a cable tray body is arranged on the upper side of the supporting bottom plate; two L-shaped mounting plates are arranged on the upper side of the supporting bottom plate, fixing bolts are arranged on the upper sides of the L-shaped mounting plates, fixing grooves are formed in one sides of the L-shaped mounting plates, and screws are arranged in the fixing grooves. By means of the positioning plate, after the screw is installed in place, the limiting block can release limiting of the positioning plate through the shifting plate and the rotating frame, so that the positioning plate can conveniently protect and fix the screw installed in place under the elastic force of the positioning plate, and meanwhile the situation that the screw is loosened after being installed is avoided; and when the screws are not installed in place, the fallen positioning plate can be blocked.

The application relates to the field of detachable connection of casters, in particular to a detachable luggage caster which comprises a base, a caster assembly and a lock catch assembly, the base is provided with a containing groove and a through hole, the caster assembly comprises a caster connecting shaft provided with an annular groove on an outer wall, the caster connecting shaft penetrates out of the bottom of the base and is exposed on the upper surface of the base, the lock catch assembly comprises a sliding buckle and an elastic piece which are both arranged in the containing groove, the sliding buckle is slidably arranged on the top of the elastic piece in the containing groove, the elastic piece is connected with the groove wall of the containing groove and the sliding buckle at two ends respectively, a through hole is arranged in the bottom of the sliding buckle and is exposed on the lower surface of the base, a locking socket is arranged on the sliding buckle and can be movably connected with the annular groove. The caster can improve the use convenience of the luggage caster, ensure that the caster can be flexibly disassembled and assembled, and improve the installation stability of the spring and the installation safety of the unlocking trigger structure of the caster.

The utility model discloses a hardware, including handle portion, upper plate portion, lower plate portion, step portion, first cylinder portion and second cylinder portion, handle portion recessed has first recess, and upper plate portion and lower plate portion interval setting and the both sides are connected with first reinforcing block, second reinforcing block, first reinforcing block and second reinforcing block keep gap, and lower plate portion recessed has second recess, and second recess intercommunication gap, and second recess and first recess both are located on same axis and first recess, gap and second recess three form first screw hole, upper plate portion is equipped with through -hole, and the upper end surface of lower plate portion is recessed with third recess downward, and through -hole and third recess are located on same axis, and the interval of through -hole, upper plate portion and lower plate portion two and third recess three form second screw hole, its whole structure design is ingenious and reasonable, can let the fixed piece interval through gap, realizes the multiple point fixed of the fixed piece, ensures the stability and reliability of fixed, avoids single fixed point and is easy to appear the loosening phenomenon.

The utility model discloses a hydraulic rotary sealing joint, which comprises a transversely arranged joint body and an oil way interface arranged on the upper side wall of the joint body, the lower end of the oil way interface is fixedly sleeved with a connecting ring, the lower end of the connecting ring is fixedly connected with the upper side wall of the joint body, a sealing column is vertically inserted in the oil way interface, and the sealing column is fixedly connected with the upper side wall of the joint body. The sealing column is in threaded connection with the oil way connector, the upper end of the sealing column penetrates through the oil way connector and is fixedly connected with a transversely-arranged connecting disc, the lower end of the connecting disc is fixedly connected with a first rubber ring, and an inner hexagonal groove is formed in the upper end of the connecting disc. A transversely-arranged push disc is slidably connected to the inner side wall of the inner hexagonal groove, and sliding blocks are fixedly connected to the left end and the right end of the push disc correspondingly. According to the utility model, not only can dual sealing be provided for the oil way interface of the joint, but also rapid locking and unlocking can be realized, the loosening condition is effectively prevented, and the reliability is obviously improved.

This utility model discloses a pile splicing structure for construction, relating to the field of building construction technology. It includes a first pile body and a second pile body, with a guide assembly installed between the first and second pile bodies. The guide assembly includes two guide rods symmetrically distributed. The top of the first pile body has a recessed groove for the guide rods to slide, and the bottom of the second pile body has a positioning groove for the guide rods to insert into. A compression spring elastically connects the guide rods and the recessed grooves. This utility model, through the difference in radius between the guide rods and the positioning grooves in the guide assembly, enables the insertion of one guide rod into the positioning groove in the shortest possible time, thereby limiting the axis of motion of the second pile body during connection. This reduces the engineering difficulty of connecting the first and second pile bodies, thus improving the efficiency of splicing the first and second pile bodies.

The utility model discloses a multifunctional cat climbing frame capable of being freely spliced and combined, and relates to the technical field of cat climbing frames. The multifunctional cat climbing frame capable of being freely spliced and combined comprises a vertical frame, a plurality of sets of pedals arranged on the outer wall of the vertical frame and a cat house arranged on one side of the vertical frame, and a cat scratching plate is arranged on one side of the cat house in a spliced mode. According to the device, a plurality of groups of ring seats with positioning blocks on four sides are arranged on the outer wall of the vertical frame, and then a pedal and other functional parts are stably combined with the ring seats on the outer wall of the vertical frame through a clamping part, a positioning sleeve, a locking plate and a locking screw rod, so that the stability of the connecting position is effectively improved; the situation that the connecting position is loosened due to impact force generated in the cat climbing and jumping process is effectively avoided, the pedal and the clamping piece are connected through the replacement assembly composed of the installation screw rod, the installation plate and other assemblies, undamaged parts can be recycled, and resource waste is reduced.