63 results about "Dental lamina" patented technology

A thread rolling plate for producing self-tapping and self-locking screws comprises a main thread plate and an auxiliary thread plate. Working faces are arranged on the main tooth plate and the auxiliary tooth plate, and each working face is provided with a collecting part and a shaping part. The shaping part is provided with a high thread groove, a low thread groove, an upper square tooth groove and a lower square tooth groove. Thread rolling edges are arranged between the high thread grooves, the upper square tooth groove comprises a first tooth groove and a second tooth groove, and the lower square tooth groove comprises a third tooth groove and a fourth tooth groove. The high thread grooves and the low thread grooves are formed in the working face, two kinds of threads with different heights are formed at a time, and the self-locking performance of the screw is enhanced. The upper square tooth groove and the lower square tooth groove form a first self-locking block, a second self-locking block, a third self-locking block and a fourth self-locking block in the tooth rolling process, and the self-locking performance is improved. The sharp tooth groove and the flower tooth part are arranged on the main tooth plate, so that the cutting and chip removal performance of the screw is improved. The thread rolling plate can be used for machining screws with threads of various functions and specifications under one-time thread rolling, and the machining efficiency is greatly improved.

The utility model provides a kind of tooth plate fixing tool, it is related to tooth plate fixing tool technical field, the tooth plate fixing tool includes placement part, tooth plate, clamping part, placement part is set on clamping part, placement part can move on clamping part, clamping part can be clamped and fixed to the tooth plate placed on placement part;Support part, clamping part is set on support part, support part can be used to control clamping part rotation predetermined angle, this kind of tooth plate fixing tool when using, can be driven by the rotation of guide rail by controlling the rotation of worm, further drive the rotation of the tooth plate that has been fixed in upper portion, by controlling the number of turns and angle of worm rotation, tooth plate can be quickly adjusted to predetermined angle, to facilitate the accurate polishing of tooth plate, this kind of fixing tool can quickly and conveniently realize the adjustment of tooth plate angle, use effect is good, and can be clamped and fixed to a variety of different thicknesses of tooth plate, and the scope of application is extensive.

The utility model discloses a Song charm teapot door couch with a reinforced frame structure, which comprises a first frame, a core plate, two carved tooth plates, a second frame and a tincture, the core plate is embedded in the first frame, the tops of the two carved tooth plates are inserted into the bottom of the first frame through connecting insertion rods, and the second frame is connected with the second frame through connecting insertion rods. The two carved tooth plates are distributed at the bottom of the core plate in a bilateral symmetry mode, the second frame is inserted into the bottoms of the two carved tooth plates through the connecting insertion rods, and the Toney is connected to the bottom of the second frame through the square tenons. The carved tooth plate and the first frame are connected through the square tenons, the joists are connected to the second frame through the square tenons, so that a stable frame structure is integrally formed, the longitudinal middle columns and the transverse middle columns are arranged at the bottom of the core plate, the middle supporting force is enhanced, and the stability and the structural strength under the large scale are integrally guaranteed; the service life is prolonged, and the practicability is high.

The utility model relates to the technical field of petroleum drilling operation equipment, in particular to an adjustable chain type high-torque pipe vice which comprises a vice handle, one side of the vice handle is rotationally connected with a shaft pin, one side of the shaft pin is fixedly connected with a vice jaw, the vice handle is hinged to the vice jaw through the shaft pin, a tooth groove is fixedly formed in the inner side of the vice jaw, and the tooth groove is fixedly connected with the vice jaw. A tooth groove is formed in the jaw, a tooth plate is rotationally connected into the tooth groove, a pressure spring is fixedly connected into the tooth groove, the pressure spring abuts against and limits the tooth plate in the tooth groove, a tubular column is arranged below the jaw, and a chain is arranged at the jaw position of the jaw. Compared with the prior art, the problem that in the prior art, clamping requirements of multi-size tubular columns cannot be flexibly met is solved.

The present application relates to a long-acting water-based anti-loose fastener liquid adhesive processing precision coating device, which comprises a track, a moving table, a feeding assembly, a centering assembly and an adhesive coating module. The track has a feeding area, a centering area and an adhesive coating area. The moving table is arranged on the track for movement. The feeding assembly is arranged in the feeding area and can move the fastener to the moving table. The centering assembly is arranged in the centering area and can align the axial position of the fastener. The adhesive coating module comprises a glue outlet pipe and a tooth searching plate combined together. The tooth searching plate has two tooth searching surfaces matched with the shape of the screw thread and can extend into the screw thread of the fastener. The tooth searching plate has a glue outlet channel connected with the glue outlet pipe, and one end of the glue outlet channel forms a glue outlet opening connected with the glue outlet channel. By extending the tooth searching plate into the screw thread for adhesive coating, the glue outlet opening can be ensured not to be deformed.

The utility model discloses a thread rolling device for processing foundation bolts, and relates to the field of bolt preparation, the thread rolling device comprises two cross rods, the upper surfaces of the two cross rods are provided with first sliding grooves, the lower surfaces of the two cross rods are provided with second sliding grooves, and the first sliding grooves and the second sliding grooves are communicated with each other. One side of the interior of each first sliding groove is slidably connected with a thread rolling mechanism, through the arrangement of a collecting mechanism and a scraping mechanism, cooled water flows out of a water outlet hole to cool a thread rolling plate, the cooled water flows into a collecting box, sweeps carried by flowing-in waste water are filtered through a filter screen, the sweeps are filtered and intercepted, and the waste water is discharged out of the collecting box; and meanwhile, a second motor drives a lead screw, then the lead screw rotates to drive a scraping plate to move under the limitation of a limiting rod, then the residual scraps on the tooth surface of the thread rolling plate are scraped off, and therefore the influence on the next thread bolt thread rolling quality is avoided.

The utility model relates to the technical field of dental plates, and discloses a noise reduction type crusher wear-resistant dental plate, which comprises a rack for loading and supporting and a fixed dental plate body, the upper surface of the rack is fixedly connected with a noise reduction processing assembly for cushioning and noise reduction, the top of the noise reduction processing assembly is fixedly connected with the fixed dental plate body, and the fixed dental plate body is fixedly connected with the rack. Outer sleeves are evenly and fixedly connected to the four corners of the upper surface of the rack, elastic supporting assemblies with one ends extending out of the outer sleeves are fixedly connected to the interiors of the outer sleeves and used for conducting deformable supporting treatment, and the tops of the elastic supporting assemblies are fixedly connected with the fixed tooth plate body. According to the noise reduction type crusher wear-resistant tooth plate, by arranging the effective damping assembly, vibration force generated during crushing impact can be effectively eliminated, certain elastic deformation capacity is achieved during impact, the vibration influence caused by impact force can be further relieved, noise generated during operation is effectively eliminated, and the service life of a crusher is prolonged. The purpose of effectively reducing noise is achieved.

The utility model relates to the technical field of excavator buckets, and discloses an assembly type excavator bucket which comprises an excavator bucket body, a fixing plate is fixedly connected to the edge of the top of the excavator bucket body, and bucket lug plates used for being connected with an excavator bucket rod are symmetrically welded to the fixing plate and the rear side wall of the excavator bucket body. A bucket tooth assembly is connected to the edge of the bottom of the excavator bucket body and comprises a tooth plate, a tooth root, a pin hole, a bucket tooth sleeve and a pin shaft, the tooth root is sleeved with the bucket tooth sleeve in a matched mode, the bucket tooth sleeve is matched with the pin hole of the tooth root through the pin shaft, and detachable installation is achieved. A plurality of mounting holes are formed in the edge of the front side of the side plate at equal intervals, and the front side of the side plate is detachably connected with a side shovel assembly and a wear-resistant assembly through the mounting holes. By arranging the bucket tooth assembly, the side shovel assembly and the wear-resistant assembly, parts can be flexibly replaced conveniently, the maintenance cost and time are reduced, and the use efficiency and economic benefits of the excavator are improved.

The invention discloses a safety slip for natural gas drilling, and relates to the technical field of petroleum drilling equipment, the safety slip comprises a plurality of slip pieces hinged through hinge pin shafts, a tooth plate sleeve arranged in the middles of the slip pieces, and slip inserts mounted in the tooth plate sleeve, and the middles of the slip inserts are provided with moving grooves extending transversely; and moving teeth capable of moving in the radial direction are arranged in the moving grooves in a sliding mode, two parallel transverse rods are inserted into the back sides of the moving teeth, clamping blocks are fixedly arranged on the outer wall of the tooth plate sleeve, and pushing assemblies are installed on the clamping blocks. When the main slip loses efficacy and the drill rod impacts downwards, the moving teeth of the safety slip rapidly extend out in the radial direction of the moving groove under the action of the pushing assembly and are in interference fit with the outer wall of the drill rod, at the moment, the moving teeth and the original slip teeth share impact loads together, high-strength impact force originally concentrated on a single point is dispersed to a plurality of meshing contact areas, and the safety of the drill rod is improved. And the deformation or fracture of the slip insert caused by local stress concentration is effectively avoided.

The utility model discloses a Song charm knife tooth long table convenient to disassemble and assemble, which comprises a thick tooth plate, a waist binding plate, four supporting legs and a table top plate, the number of the supporting legs is four, the tops of the four supporting legs are respectively provided with a first slot, the bottom of the thick tooth plate is provided with four second slots, the first slots are matched with the second slots, and the table top plate is provided with a table top plate. The four supporting legs are arranged at the bottom of the thick tooth plate in an inserted mode through the first inserting grooves and the second inserting grooves, the waist binding plate is located over the thick tooth plate, the table top plate is located over the thick tooth plate, the supporting legs are arranged, the first inserting grooves are formed in the tops of the supporting legs, and the tenons are installed at the bottom of the waist binding plate. The waist girdling plate can be installed on the top of the thick tooth plate through the mortise and the tenon, and the table top plate can be installed on the top of the waist girdling plate through the clamping plate and the clamping groove, so that all parts on the long table can be rapidly disassembled and installed, operation is easy, meanwhile, the locking direction is increased, the table legs and the tooth plate are more powerfully combined, and stability is guaranteed.

The invention relates to the technical field of medical bonesetting component performance testing, in particular to a medical bonesetting component mechanical performance testing device which comprises an equipment bin, and an adjusting assembly is arranged above the equipment bin and matched with left-right sliding through threaded connection to adjust the testing position of a bonesetting component. The top of an inner cavity of the equipment bin is provided with a clamping assembly for fixing a bone setting component through six sets of independently-controlled clamping blocks, and the bottom of the clamping assembly is provided with a detection assembly which is adjusted through the degree of freedom and matched with an adjusting assembly to complete mechanical property testing. The device has the beneficial effects that the six groups of clamping blocks which are independently controlled drive the three-fork plate to be linked with the clamping shaft through the electric push rod, so that multi-point accurate fixation of the special-shaped bone fracture component is realized, and an overall stability test is synchronously completed in the clamping process; the electromagnet, the gear and the tooth plate form a locking mechanism to automatically lock the movable shaft after clamping, and the electric push rod is released to switch to a supporting mode, so that the clamping stability in a subsequent test is ensured.

An orthodontic plate includes a base, a stem, a first arm, a first hook, a second arm and a second hook. The base, the stem, the first arm, the first hook, the second arm and the second hook may be integrally formed with one another. The base that can be affixed to the buccal side of a patient's mouth via a plurality of titanium screws. The stem extends from the base. The first and second arms extend from the stem in a mirrored configuration. Each hook is connected to a distal end of a respective arm. Each hook is configured to be connected to a wire, a spring, a chain, etc., that applies a tensile force or a compressive force to a tooth. The stem, the first arm and / or the second arm can be bent to provide a more comfortable fit in a patient's mouth.

A feeding positioning device for straightening and processing a section bar is assembled on a jaw assembly body of a section bar straightening machine, the jaw assembly body comprises a tooth plate clamping table, and the feeding positioning device is characterized by comprising a feeding mechanism and a positioning mechanism. The feeding mechanism is located on the front side of the tooth plate clamping table and used for feeding the profile to the tooth plate clamping table. The positioning mechanism comprises two side pushing assemblies, and the two side pushing assemblies are located on the two sides of the dental plate clamping table and are symmetrically assembled relative to the dental plate clamping table. The side pushing assembly comprises a second pushing cylinder, the second pushing cylinder is connected with a lateral positioning seat, the lateral positioning seat is provided with a lateral positioning surface used for positioning the side surface of the profile, a third pushing cylinder is assembled on the lateral positioning seat, the third pushing cylinder is connected with an axial positioning seat, and the axial positioning seat is provided with a positioning surface used for positioning the side surface of the profile. The axial positioning seat is provided with an axial positioning face used for positioning the end face of the profile. Compared with the prior art, unnecessary loss of profile resources can be avoided.

The present application relates to the technical field of mold processing, and particularly relates to a processing and forming method of a tooth plate, which comprises the following steps: S1: pretreating a tooth plate blank; S2: matching grinding control parameter groups required by tooth plate chamfer grinding according to extrusion inclined size parameters; S3: determining a grinding starting position on a working surface of the pretreated tooth plate, and demarcating a step extension interval; S4: adjusting a clamping angle of the tooth plate relative to a grinding wheel of a grinding machine according to an angle clamping parameter; S5: taking a position where the grinding wheel first contacts a working surface to be ground as a lower grinding reference position; and S6: grinding the tooth plate clamped at zero position to obtain a chamfer tooth plate. According to the present application, the grinding position, the clamping angle, the lower grinding depth and the extension interval of the tooth plate chamfer are determined by parameterization, so that the tooth plate can stably guide the controlled flow of the neck part material of a screw, thereby reducing the reverse pull and size fluctuation, and improving the batch forming efficiency and consistency of the extrusion inclined angle screw.

The invention discloses a tooth plate surface nitriding treatment device and method, and relates to the technical field of tooth plate treatment.The tooth plate surface nitriding treatment device comprises a nitriding treatment box body, multiple sets of placing transverse plates are evenly installed in an inner cavity of the nitriding treatment box body, and multiple sets of through holes are evenly formed in the multiple sets of placing transverse plates; heating assemblies are installed on the top wall of an inner cavity of the nitriding treatment box and the bottom walls of the multiple sets of placement transverse plates, a gas inlet assembly is installed at the bottom end of the outer wall of one side of the nitriding treatment box, a waste gas treatment box is installed on the outer wall of the other side of the nitriding treatment box, and a partition plate is installed in the middle of an inner cavity of the waste gas treatment box; a second ventilation pipe extending to the inner cavity of the waste gas treatment box body is mounted at the upper end of the outer wall of the other side of the nitriding treatment box body. When the waste gas treatment device is used, used ammonia gas, nitrogen gas and nitrogen dioxide gas can be fully mixed with a dilute sulfuric acid solution and a saturated sodium hydroxide solution through the second gas exchange pipe and the first gas exchange pipe, so that the ammonia gas and the nitrogen dioxide gas can be automatically removed, and the waste gas treatment effect is improved.

The utility model relates to the technical field of screws and discloses a joint screw threading device that can quickly recycle debris, including a base plate, a feeding mechanism is fixed on the top of the base plate, a vibration plate is fixed on the top of the feeding mechanism, a fixed plate is fixedly connected to the top of the base plate, a fixed threading plate is fixedly connected to the inner side of the fixed plate, a movable threading plate is provided on the opposite side of the fixed threading plate, a moving component for driving the movable threading plate is provided at the bottom of the base plate, a spray component is fixedly provided on the outer surface of the fixed plate, a dust collection box is fixedly provided on one side of the spray component, a containing box is provided at one end of the base plate, a collecting groove is provided at the front end of the containing box, and the collecting groove is communicated with the containing box, the utility model is provided with a dust collection box, and the debris produced by threading can be effectively collected through the cooperation of structures such as a fan and an air duct, which is beneficial to improving the threading quality; the utility model is provided with a shock-absorbing spring, and the impact force can be relieved by the shock-absorbing spring, which is beneficial to maintaining the integrity of the appearance of the screw.

The utility model discloses a high-stability Song charm flower stool, which comprises a stool plate, four stool legs and a girdling, the stool plate is fixedly arranged at the top of the girdling, one side of each stool leg is provided with a lattice corner, the lattice corners of the four stool legs are fixedly provided with hanging pins and plug pins, the bottom of the girdling is provided with four tooth plates, and the bottom of the girdling is provided with a clamping groove. The inner side of each stool leg is attached to the outer side of the corresponding tooth plate through a lattice corner, four hanging grooves are formed in the outer side of each tooth plate, each stool leg is engaged in the corresponding tooth plate hanging groove through a hanging pin at the top, four inserting grooves are formed in the inner side of the girdling, and the four inserting grooves are inserted into the corresponding inserting grooves. The four stool legs are engaged in the corresponding waist inner side slots through bolts at the tops, and the stool legs are inserted into the bottoms of the waist through connecting insertion rods, so that the supporting performance of the stool legs is improved, the stabilizing effect of the whole stool plate is improved, the service life of the flower stool is prolonged, a more comfortable rest environment is provided for a user, and the flower stool is suitable for popularization and application. The stool legs are convenient to mount and dismount.

The novel lead pan scum salvaging bucket comprises a bucket body, the bucket body is of a bucket-shaped structure which is formed by a bent arc-shaped bottom plate and two side sealing plates and provided with an opening, the bottom plate is provided with a plurality of through holes, lead water can flow out through the through holes, and the two side sealing plates are arranged on the bottom plate. The bottom edge, located at the opening, of the bottom plate extends outwards to be provided with a tooth plate, and the tooth plate is in a bent arc shape and used for abutting against the arc-shaped inner wall of the lead pan in a matched mode. The arc-shaped tooth plate can enable the excavator bucket body to effectively abut against the inner wall of a round lead pan so as to make full contact with and fished out slag, meanwhile, lead water attached to the slag can flow back into the lead pan through the through hole, waste is avoided, secondary filtering and recycling are not needed, the slag fishing efficiency is fully improved, and the production requirement is met.

The utility model provides a tooth arrangement guide plate, which relates to the technical field of false tooth arrangement and comprises an arc-shaped groove, two moving plates are slidably connected in the arc-shaped groove, positioning plates are fixedly mounted on the surfaces of one sides of the two moving plates, U-shaped plates are fixedly mounted on the surfaces of the two moving plates, and the U-shaped plates are fixedly mounted on the surfaces of the two moving plates. A first threaded rod is rotationally connected between the inner walls of the two ends of the U-shaped plate, a rotating wheel is fixedly installed at a port of one end of the first threaded rod, a movable plate is in threaded connection with the surface of the first threaded rod, a round rod is fixedly installed on the surface of the movable plate, and a through hole is formed in the surface of the movable plate; the surface of the arc-shaped plate is in threaded connection with two bolts, and a threaded hole is formed in the surface of the end, away from the movable plate, of the round rod. According to the utility model, the positioning device is arranged, so that the two positioning plates can position false teeth in the arc-shaped tooth arrangement plate, and the tooth arrangement accuracy of the tooth arrangement guide plate on the false teeth is improved.

The utility model discloses ore sand vibration screening equipment with a dust falling function, and belongs to the technical field of ore sand screening, the ore sand vibration screening equipment comprises a main body, a cavity is arranged at the top end in the main body, one side of the cavity is rotatably connected with a rotating wheel, one side of the rotating wheel is provided with an atomizing spray head penetrating into the cavity, and the atomizing spray head is provided with a dust falling device. One end of the top of the rotating wheel is provided with a tooth pattern plate, one side of the atomizing nozzle is provided with conical teeth, the inner wall of the cavity is provided with a tooth plate matched with the conical teeth, and the top end of one side of the main body is provided with a rotating motor. The rotating motor drives the gear to rotate, the gear drives the rotating wheel to rotate through the tooth pattern plate, the rotating wheel drives the four sets of atomizing nozzles to rotate at the moment, meanwhile, the conical teeth are matched with the tooth wheels, the conical teeth drive the atomizing nozzles to rotate, and the two modes are combined. And planar water mist is formed at the top end in the main body, so that dust can be effectively isolated.

The utility model provides a multi-face alternating type thread rolling mechanism, and belongs to the technical field of thread rolling plates. The tooth plate comprises a bottom plate, a static tooth plate module and a movable tooth plate module are rotationally arranged on the bottom plate, and the movable tooth plate module is arranged on the periphery of the static tooth plate module. The two movable tooth plates on the movable tooth plate mounting plate can be matched with two of the four fixed tooth plates for thread rolling work at a time, thread rolling of two bolts can be achieved at a time, the thread rolling efficiency is high, and after thread rolling is completed for a period of time, the thread rolling efficiency is high. The fixed tooth plate mounting plate is driven by the rotary switching assembly to rotate by 180 degrees, so that the other two fixed tooth plates can be matched with the movable tooth plate for thread rolling, cooling time is provided for threads of the fixed tooth plates, and the service life of the threads of the fixed tooth plates is prolonged.

The invention belongs to the technical field of dental plate sand blasting, and particularly relates to a dental plate surface sand blasting device. The device comprises a sand blasting box and two groups of rotating roller parts which are distributed in the sand blasting box in parallel, and further comprises limiting side plates arranged on the two sides of the rotating roller parts, two groups of front and rear baffle parts are arranged on the two groups of limiting side plates, the two groups of limiting side plates are close to the side surfaces of a tooth plate, and the two groups of front and rear baffle parts are close to the front and rear surfaces of the tooth plate; the two groups of front and rear baffle parts are connected through a butt-joint transverse plate, and an adjusting mechanism for adjusting the distance between the two groups of front and rear baffle parts is arranged between the front and rear baffle parts and the butt-joint transverse plate. A four-direction surrounding type shielding structure for the tooth plate is formed through the limiting side plates on the two sides of the rotating roller part and the two sets of front and rear baffle parts, only the tooth grain surface on the top of the tooth plate is exposed for sand blasting, sand flow is structurally and thoroughly prevented from being splashed to the side faces, the front and rear end faces and the bottom mounting face of the tooth plate, and the matching size and the mounting precision of the tooth plate are effectively protected; and the sandblasting damage rejection rate of the dental plate is reduced.

The utility model provides a longitudinal shaft type harvester roller, and belongs to the technical field of harvesters. Comprising a cylinder and a roller assembly, a spiral plate is arranged on the outer surface of the cylinder, the roller assembly comprises a circular plate, the circular plate is stably installed on the outer surface of the cylinder, a cylindrical rod is installed on the inner side face of the circular plate, R-shaped teeth are stably installed on the outer surface of the cylindrical rod, and n-shaped teeth are arranged on one side of the R-shaped teeth. And the tooth plate is stably mounted on the outer surface of the cylindrical rod. The cylindrical rod is arranged outside the cylinder, the multiple R-shaped teeth and the multiple n-shaped teeth are arranged on the cylindrical rod, the R-shaped teeth and the n-shaped teeth can be driven to rotate through rotation of the cylinder so that rice can be processed, meanwhile, under continuous rotation of the R-shaped teeth and the n-shaped teeth, straw can be rapidly discharged, the situation of material blocking is avoided, and the using effect is improved; and the number of the threaded rods is increased, so that the use stability of the device is improved, and the device is more stable during use.

The utility model relates to the technical field of medical equipment, in particular to a chest distraction fixator which comprises a dental plate and a pair of distraction arms, at least one distraction arm is installed on the dental plate in a sliding mode, each distraction arm is provided with a distraction plate, the distraction arm sliding relative to the dental plate is provided with a rotating handle, and the rotating handle is connected with the dental plate. The device further comprises an auxiliary supporting device, the auxiliary supporting device comprises a rotating sleeve and adjusting arms screwed at the two ends of the rotating sleeve in a threaded mode, the two adjusting arms and the rotating sleeve are opposite in thread screwing direction, connecting blocks are arranged at the outward ends of the two adjusting arms correspondingly, and abutting blocks are hinged to the connecting blocks correspondingly. The two abutting blocks can abut against the inner walls of the outward ends of the two opening arms respectively. The thoracic cavity distraction fixator can keep the distraction degree of the outward ends of the two distraction arms, the operation view field is guaranteed, and meanwhile adjustment is convenient.

The utility model provides a kind of tooth plate mould surface nitriding equipment, it is related to surface material modification technical field, the tooth plate mould surface nitriding equipment includes base, heating part, heating part is set on base, heating part is used to heat tooth plate mould, gas supply part, gas supply part is used to provide gas for tooth plate mould surface nitriding in heating part, discharging part, discharging part is used to place tooth plate mould, and can drive tooth plate mould rotation, discharging part can drive tooth plate mould to enter into heating part, this kind of nitriding equipment when using, can change the position of discharging plate on heat insulation wall by controlling the rotation of heat insulation wall, make discharging plate be in the environment outside nitriding equipment, so that staff can conveniently place tooth plate mould on discharging plate, also convenient to quickly take away tooth plate mould after cooling from discharging plate, the convenience of placement and transfer of tooth plate mould is greatly improved, and use effect is good.

This invention discloses a composite tooth-rolling plate and its tooth-rolling process, relating to the field of tooth-rolling plate technology. It includes a fixed plate assembly and a movable plate assembly movably connected to one side of the fixed plate assembly. The fixed plate assembly includes a fixed light plate and a fixed tooth plate, and the movable plate assembly includes a movable light plate and a movable tooth plate. The light rod is rotated between the fixed light plate and the movable light plate, and then tooth-rolled between the fixed tooth plate and the movable tooth plate. It also includes a support assembly, each disposed on the opposite side of the fixed plate assembly and the movable plate assembly, comprising a detection element and a support element, both of which are in contact with the bottom chamfer of the light rod. When the detection element detects an increase in the downward pressure applied to the bottom chamfer of the light rod, the fixed light plate moves closer to the movable light plate, and the support element moves downward. Before tooth-rolling, the surface of the light rod is pre-rotated using the fixed light plate and the movable light plate, thereby ensuring that the light rod meets the standards before tooth-rolling and avoiding damage to the fixed tooth plate and the movable tooth plate due to surface roughness or protrusions.

The invention relates to the technical field of mouth opening training devices, and discloses an embedded automatic resistance-resisting mouth opening training device for oral and maxillofacial injury patients, comprising: two supports rotatably connected; the tooth plate is arranged at one end of the bracket; the adjusting rod is in threaded connection with one of the brackets; and the sliding assembly is arranged on the bracket. According to the invention, the dental plate can be automatically separated and reset, so that the dental plate can be propped against teeth to open and close the oral cavity, the oral cavity can be trained, the whole process is automatically carried out and is relatively convenient, the dental plate can slide, the dental plate and the teeth can synchronously move, relative sliding between contact surfaces is avoided, abrasion is avoided, and the dental plate can be used for training the oral cavity. And the gustation stimulation liquid is sprayed to the tongue when the dental plates are reset, so that the tongue can be stimulated to retract backwards, the tongue is prevented from moving to the position between the pair of dental plates, and the situation that the tongue is clamped is avoided.

The present application belongs to the technical field of medical apparatus and discloses a thoracolumbar disc disarticulator special for thoracolumbar vertebral body total resection, which comprises a handle, the outer surface of the handle is fixedly sleeved with an anti-skid ring, the middle part of the bottom end of the handle is fixedly installed with an extension plate, and the rear side of the inner middle end of the extension plate is fixedly sleeved with a limiting rod. The limiting rod, the first gear, the toothed plate, the inclined rod and the movable block are arranged, when the hexagonal handle is rotated, the threaded rod is rotated, since the outer surface of the threaded rod and the inner surface of the movable block are threadedly sleeved, with the rotation of the threaded rod, the movable block moves with one end of the inclined rod, so that the other end of the inclined rod generates a pushing force on the rectangular block, the rectangular block moves with the two toothed plates in opposite directions, so that the toothed plate and the first gear are separated, and then the first gear is pushed to adjust the position of the first gear and is fixed by the toothed plate after the adjustment.