15results about How to "Avoid accidental changes" patented technology

The invention relates to a training device for oral medicine teaching, which comprises two gingivae which are matched for use, the two gingivae are rotationally connected, a plurality of tooth models are arranged around the gingivae, the tooth models are mounted and dismounted by arranging screws, and each gingiva is fixedly connected with a tooth chamber; the supporting part is arranged behind the gingiva; the longitudinal adjusting assembly is arranged below the tooth chamber and is connected with the tooth chamber in a sliding manner; the telescopic rotation adjusting assembly is arranged behind the tooth chamber and is used for connecting the tooth chamber with the supporting component; the opening adjusting assembly is connected with the longitudinal adjusting assemblies at the upper end and the lower end and the supporting assembly to achieve opening degree adjustment of gingiva at the upper end and the lower end; and the face cover and the jaw cover are respectively connected to the outer vertical surfaces of the upper gingiva and the lower gingiva in a buckling manner. The tooth mold has the advantages that the tooth cavity and the gingiva can move back and forth, the opening degree can be adjusted and fixed, and each tooth mold can be independently detached, so that the tooth mold is adaptive to different teaching and training environments.

The utility model discloses a pumpkin seed processing screening device with an angle convenient to adjust, and relates to the technical field of screening devices. The device comprises a rectangular bottom plate, wherein an adjusting mechanism and a self-locking mechanism are arranged on the rectangular bottom plate; two rectangular supporting plates are arranged above the rectangular bottom plate, two screening plates are arranged between the two rectangular supporting plates in a hinged mode, two second rectangular supporting plates are fixedly connected to the sides, away from each other, of the two rectangular supporting plates correspondingly, and first springs are fixedly connected to the bottoms of the multiple second rectangular supporting plates correspondingly. The bottoms of the first springs are fixedly connected with the rectangular bottom plate. According to the pumpkin seed processing screening device, the adjusting mechanism is arranged, so that the problem that in the using process of an existing pumpkin seed processing screening device convenient to adjust the angle, the angles of a plurality of filter screens are inconvenient to adjust at the same time, so that more time needs to be spent to find the optimal working angle of each filter screen, and the production period is prolonged is solved.

The utility model discloses a portable photovoltaic charging plate folding support structure, including two mutual symmetry's bearing strip, the inside of two bearing strip all is set up with the storage groove, the groove top and groove bottom symmetry of storage groove set up with the sliding slot, the inside rotation of storage groove is connected with the rotating shaft, the surface rotation of two rotating shafts all is connected with the rotating strip. The utility model discloses through two mutual symmetry's bearing strip, the storage groove, the sliding slot, the rotating shaft, the rotating strip, the slide column, the damping pivot, the placement groove, the support leg, the support mouth, the movement groove, the sliding plate, the extension groove, the extension leg, the locking bolt, the abutment, the hinged member, the support strip, the cooperative matching of restriction block, has realized the folding and unfolding function of support structure, portable folding and stable support, satisfies the use demand of photovoltaic charging plate under different scenes.

The utility model discloses a carousel type recreation equipment, including wooden horse, the fixed sliding sleeve that is equipped with below wooden horse, the movable sleeve that is equipped with outside sliding sleeve, the limit sleeve that is equipped with outside movable sleeve, the control sleeve that is equipped with outside movable sleeve rotation, control sleeve one side is connected and is equipped with rotating stand, the cooperation sleeve that is equipped with outside movable sleeve, cooperation sleeve outer wall is connected with control sleeve inner wall through the thread and carries out the swing, the movable sleeve outside is equipped with a plurality of limit grooves, the sliding limit link that is equipped with in rotating stand, limit link one end is equipped with limit board, the movable sleeve that is equipped with outside limit link outside movable sleeve, the movable sleeve inside is inclined and is equipped with inclined groove, the sliding inclined board that is equipped with in inclined groove, the side of inclined board is equipped with moving block, moving block one side is equipped with push spring, and the movable plate that is equipped with in push spring other end, the movable sleeve is equipped with movable sleeve, and the movable sleeve one side is equipped with follow -up groove, moving block one side is equipped with follow -up block, the utility model has realized the flexible adjustment to the height of horse stirrup, and has guaranteed the structural stability after horse stirrup height adjustment.

This utility model discloses a mechanical linkage drill rod support device for a horizontal directional drilling rig, including a base frame. An active bracket and a driven bracket are respectively arranged inside the base frame. The lower end of the active bracket is rotatably connected to the base frame. The active and driven brackets have identical internal structures. A linkage frame is provided between the active and driven brackets. The linkage frame includes a square tube, an adjusting plate, a first connecting plate, and a second connecting plate. One end of the second connecting plate is rotatably connected to the driven bracket. The square tube is fixedly installed on one side of the second connecting plate. The adjusting plate is located on one side of the square tube, and one end of the adjusting plate slides into the interior of the square tube. This device enables adjustment of the distance between the two brackets, increasing practicality and solving the problem that when the support device supports drill rods of different lengths, the bracket spacing cannot be flexibly adjusted according to the actual length of the drill rod, affecting the stability and safety of drill rod loading and unloading.

The utility model is suitable for the technical field of handles, and provides an adjustable handle which comprises a buckling handle. The separation switch is hinged to one side of the buckle handle; the height adjusting plate is mounted on one side of the buckle handle in a sliding manner; the first connecting groove is formed in the top of the buckle handle, and the first connecting groove is matched with the height adjusting plate; the height adjusting nut is installed on the height adjusting plate in a threaded mode, and the height adjusting nut is located in the first connecting groove; and the left-right adjusting mechanism is arranged on the buckle handle and is used for adjusting the buckle handle left and right. The adjustable handle provided by the scheme has the advantages that the mounting adaptability of the handle can be effectively improved, so that mounting pieces with different distances can be conveniently matched with the handle for use, the mounting difficulty is greatly reduced, and the mounting efficiency is improved.

The utility model belongs to horology maintenance technical field, concretely points to a kind of horology maintenance quartz movement placing device, including base, the centre of base is equipped with lifting cylinder, the output end of lifting cylinder is equipped with placing table, for temporarily placing movement, base is equipped with slide rail and is relatively parallel and is arranged two groups, the mobile support is slidably connected on slide rail, the mobile support is relatively arranged two groups and is located the both sides of placing table, the bottom of mobile support is set across two groups of slide rails, the top of mobile support is equipped with support block, angle adjustable clamping mechanism is arranged on support block;Through the collaborative work of drive shift mechanism, angle adjustable clamping mechanism, the integrated operation of movement " placing, clamping, angle adjustment, locking " is realized, both solve the pain point that traditional tool clamping is not stable, adjustment is complicated, also ensure the movement safety by multiple protection design, overall improve the convenience, accuracy and efficiency of horology maintenance.

The utility model relates to a hanging rod for installing a cargo rope binding hook, which comprises a rod body and a supporting seat, the rod body comprises at least two sections of hollow pipes, the hollow pipes are sequentially sleeved from outside to inside and can slide relative to each other, and a locking assembly is arranged between adjacent hollow pipes. The adjacent connected hollow pipes are switched between the slidable state and the locking state through the locking assembly, the supporting base is connected with the hollow pipe on the innermost side, and an inserting opening is formed in the end, away from the rod body, of the supporting base. According to the technical scheme, when a cargo rope binding hook is installed on the hanging rod, an operator can lift the hanging rod to a high position to be connected with a vehicle body without an additional auxiliary climbing tool, installation is convenient, operation is easy, and potential safety hazards in the installation process can be eliminated.

This invention discloses a constant-temperature visual gynecological speculum, relating to the field of medical device technology. It includes: a first and a second dilatation piece for examining gynecological patients; a constant-temperature mechanism to maintain a constant temperature for the first and second dilatation pieces; an expansion mechanism to assist in sliding expansion between the first and second dilatation pieces; and a limiting mechanism to limit and fix the upper connecting frame and the lower receiving frame. Through the built-in constant-temperature mechanism, specifically the heating wires located inside the first and second dilatation pieces, combined with a heat spreader plate for uniform heating, and precise temperature control by a temperature sensor, the dilatation pieces maintain a constant temperature when in contact with the human body. This completely solves the clinical pain point of traditional metal or plastic speculum, where low temperatures cause vaginal contraction, discomfort, and even obstruct the doctor's field of vision, significantly improving patient comfort during examination.

The invention relates to the technical field of medical apparatus and instruments, and particularly discloses a single-stage venous cannula capable of adjusting infusion amount and a flow rate control method of the single-stage venous cannula. The adjusting mechanism comprises an adjusting seat, a screw rod and a driving assembly, the outer side of the insertion pipe is sleeved with the adjusting seat, the screw rod is in threaded connection with the interior of the adjusting seat, the end of the screw rod is used for abutting against the insertion pipe, and the driving assembly is used for driving the screw rod to rotate; the driving assembly comprises a connecting column, an inserting rod and a first elastic piece, the connecting column is connected to the screw rod, the inserting rod is movably inserted into the adjusting seat, an inserting piece is arranged on the inserting rod, and an inserting hole for the inserting piece to be inserted in is formed in the connecting column. After the adjustment process is completed, the connection between the insertion rod and the screw rod can be disconnected, so that the situation that the set flow speed is accidentally changed due to the fact that a patient touches by mistake, clothes rub or the transfer process can be effectively prevented, and infusion safety is guaranteed.

This utility model relates to the field of infusion sets and discloses a precision infusion set with adjustable flow rate, including a bottle stopper puncturer. An infusion tube is fixedly connected to the bottom end of the bottle stopper puncturer. A precision flow regulator is provided at the bottom end of the infusion tube. The precision flow regulator includes an upper cover, and a lower cover is rotatably connected to the bottom of the upper cover. A drip tube is also fixedly connected to the bottom end of the precision flow regulator via the infusion tube. A fixing sleeve is fixedly connected to the outer wall of the infusion tube. An I-shaped groove is formed on the inner wall of the fixing sleeve. An I-shaped block is slidably connected inside the I-shaped groove. A limit ring is fixedly connected to the outer wall of the I-shaped block. In this utility model, the limit rod and limit hole cooperate to achieve anti-accidental contact locking, preventing unexpected changes in flow rate. The rounded corners and inclined surface design make the downward resistance greater than the upward resistance, ensuring accurate and reliable flow regulation, improving infusion safety and user experience, and ultimately achieving a highly efficient protective effect.

The utility model provides a kind of full oxygen formula ladle roaster burner, belong to roaster burner technical field, this full oxygen formula ladle roaster burner includes roaster top end ferrule;Fire jet burner, the fire jet burner is fixedly connected in the lower end of roaster top end ferrule, the circumferential outer surface of fire jet burner is equipped with annular groove;Gas pipe, the gas pipe is equipped with multiple, multiple the gas pipe is all fixedly connected in the upper end of roaster top end ferrule;Flame discharger, the flame discharger is fixedly connected in the lower end of fire jet burner;Flame jet, the flame jet is opened in the lower end of flame discharger and is connected with gas pipe;Adjusting sleeve, utilize the elastic force provided by limiting spring to ensure the close fit between both, so that the operation of adjusting flame diameter is more accurate.

The application discloses a ureteral flexible mirror sheath with adjustable inner diameter size and relates to the technical field of medical devices.The technical scheme is as follows: an outer sheath pipe is arranged, a connecting head one is arranged on the outer sheath pipe, a pipe diameter adjusting mechanism is arranged in the connecting head one, the pipe diameter adjusting mechanism is used for adjusting the pipe diameter of the outer sheath pipe, a side pipe is arranged on the connecting head one, a pressure relief valve is arranged on the side pipe, an inner core is arranged in the outer sheath pipe, and a conical expansion head is arranged at the bottom of the inner core.The pipe diameter adjusting mechanism is used for realizing flexible adjustment of the pipe diameter of the sheath pipe, the inner diameter is adjusted to be minimum to reduce the passing resistance during placement, the pipe diameter is adjusted to be larger to meet the operation demand after reaching the target position, the placement convenience and the operation practicability are considered, the conical expansion head and the pressure relief valve are used for improving the operation safety, reducing the tissue damage and the complication risk, the medical silicon rubber material is used for guaranteeing the biocompatibility and the durability, the operation habit does not need to be changed, the popularization difficulty is reduced, and the medical safety and the economy are combined.

A child walker with a height adjusting function comprises a bottom frame and a panel, a plurality of wheels are arranged at the bottom of the bottom frame and used for supporting the bottom frame to slide on the ground, a sitting area is formed in the middle of the panel, sleeves extend upwards from the two sides of the bottom frame, stand columns extend downwards from the two sides of the panel, and the stand columns are in butt joint with the sleeves. The panel and the bottom frame are fixed into a whole; height adjusting devices are further arranged between the stand columns and the sleeves and used for adjusting the relative height between the panel and the bottom frame. The baby walker has the beneficial effects that the height adjusting device is introduced between the bottom frame and the panel, so that a user is allowed to adjust the height of the baby walker according to the growth requirements of children. By means of the function, the baby walker can be suitable for different growth stages of children, the service life of the product is prolonged, and practicability of the product is improved.

This invention discloses an adjustable wrench that achieves rapid opening and closing through nut rotation, relating to the field of manual hardware tools. It includes a wrench body, a movable jaw, an adjusting nut, a stop block, a compression spring, a pin, and a detachment pin. The wrench body has a fixed jaw and a sliding groove. The movable jaw is slidably fitted into the sliding groove, and its root shaft at the bottom end has a follow-up adjusting tooth and a guide slope. The adjusting nut is rotatably mounted on the wrench body via a pin and has a guide notch adapted to the guide slope, as well as anti-slip patterns that mesh with the follow-up adjusting tooth. The compression spring and the stop block are assembled in the movable groove of the wrench body, forming a constantly engaged locking mechanism for the adjusting nut. The detachment pin cooperates with the limiting groove of the movable jaw to form a full-stroke anti-detachment protection. This invention achieves a wide range of opening range adjustment within seconds through nut rotation, while also enabling precise micro-adjustment, and combines the advantages of stable locking, anti-detachment safety, and a simplified structure.