35 results about "Double tooth" patented technology

The invention relates to a synthetic method of the cyclic carbonate with water system, which is characterized in that: in the water system with water content 0 per cent to 60.0 per cent of the weight of the epoxy compound and water, the epoxy compound and the carbon dioxide work as the raw materials and the ionic liquid with double teeth and alkali metal salt (capable of excluding) are used as the catalysts during reaction and the cyclic carbonate is synthesized under the condition of reaction pressure of 0.1MPa to 10.0MPa, temperature of 313.15K to 483.15K and the reaction time of 0h to 6h. Compared with the traditional method, the synthetic method has the advantages of friendly environment, moderate reaction condition, stable catalyst heat, low cost, easy synthesis, high selectivity, repeated use and high activity maintenance and has strong industrial application prospect.

The invention relates to a method of preparing alpha-aryl carbonyl compound. With the catalyst of four triphenylphosphine nickel or acetylacetone nickel ligand, the aryl boric acid, the alpha-halogenated carbonyl compound, the ligand and the additive are dissolved in toluene, and after reaction for 10 to 24 hours in 50 to 100 DEG C, the alpha-aryl carbonyl compound is obtained, wherein, the ligand is single-tooth phosphine ligand or double-tooth phosphine ligand; and the additive is absolute potassium phosphate or tri-potassium phosphate. The invention, which utilizes the catalyst with low cost, stable substrate, easy obtaining and gentle reaction conditions, can not only catalyze arylation of ester, amide and ketone, but also can be compatible with beta hydrogen, thereby greatly expanding the range of the substrate. Moreover, the invention possesses great application potential and can directly constitute the main framework of the steride.

The invention discloses a special double-toothed phosphonic acid-based water reducing agent for the medium and low slump concrete. The structure of the water reducing agent is as follows: one end is abis-phosphorous acid or bis-phosphite G linked by the N atom which is called as the terminal end double-toothed adsorption group, the other end is a polyether chain P prepared by carrying out the alkoxylation reaction of an initiating agent of a C1-C12 saturated alkyl or unsaturated alkyl and ethylene oxide or propylene oxide, the two ends are connected by a connecting arm L, and the connecting arm L is an aliphatic or aromatic group of C1-C10. According to the special double-toothed phosphonic acid-based water reducing agent for the medium and low slump concrete, the long-term stable slump retention of the medium and low slump concrete can be achieved, the workability is improved, and the mechanical properties and durability of the concrete are improved, so that the water reducing agentis suitable for special projects such as nuclear power, hydropower, super-high-rise buildings, super-long-span bridges and the like.

The invention discloses a novel multi-bead watch strap assembly tooling and an assembly method, belonging to the technical field of watch strap assembly. At least six accommodate cavities are arrangealong that transverse central axis of the lower mold, the structural shape of the accommodate cavities is matched with the structural shape of the surface bead, at least twelve first circular groovesare arranged along one longitudinal side of the accommodate cavities, and two first circular grooves are arranged for each accommodating cavity; The upper mold is provided with a through groove alongthe transverse central axis, and the through groove is provided with a second round groove along the longitudinal side which is the same as the first round groove in number, and the first round grooveand the second round groove are combined to form an entire round and double-tooth branch mounting channel. By arranging the upper mold and the lower mold, placing the edge beads in the accommodatingcavity, and then assembling the double tooth branches on the edge beads, the invention fully utilizes the function of the upper mold and the lower mold to ensure that the double tooth branches are uniformly stressed during the assembly, so that the double tooth branches are not easy to bend and deform, the problem of inflexible rotation of a single section of the watch strap is reduced, and the repairing rate is reduced to 2%.

The invention discloses a tooth punching die for a saw blade substrate. The tooth punching die comprises an upper die carrier and a lower die carrier, wherein a female die is fixed on the lower die carrier through a female die fixing plate; a male die is fixed on the upper die carrier through a male die fixing plate; a discharging device is fixed on the male die fixing plate; the male die and the female die are provided with a rough punching tooth and a fine punching tooth; and the size of the rough punching tooth is smaller than that of the fine punching tooth. In the tooth punching die for the saw blade substrate, a single tooth of the conventional die is replaced by double teeth, a tooth at the front operation end is the rough punching tooth while a tooth at the back operation end is the fine punching tooth, and the size of the rough punching tooth is slightly smaller than that of the fine punching tooth. When a double-tooth die is used for tooth punching, rough tooth punching and fine tooth punching are actually performed on the same tooth on the same die and rough punching is performed firstly. After a tooth index is selected by an indexing device, fine punching is performed on one roughly-punched tooth type and rough punching is performed on the other tooth type at the same time, so that tooth punching processing of the entire tooth type is finished, the completeness of the tooth type is ensured and the defects of tooth punching processing of the conventional die are overcome.

The invention discloses a tooth roller structure only adopting a spindle and toothed plate combined structure, and the spare part quantity of a machine is reduced. Integration of a spindle and a toothed plate of the tooth roller structure allows the spindle to bear higher shear force, torque and impact loads. By designing a clamping block and a barrel, the toothed p late and the spindle are fixedindirectly, so that the spindle is protected against damage to a higher extent, and the service life of the machine is greatly prolonged. Due to improvement of the fixing mode, the toothed plate is prevented from dislocating in the process of collision and extrusion with materials, and the overhaul amount of the machine is reduced. The required rotating spiral line is obtained for the spindle design of the tooth roller structure by machining, and the machine can obtain a higher discharge passage rate. The novel tooth roller structure greatly improves the spiral mode of the crusher, improves the discharge efficiency, improves the stability and reliability of the crusher, prolongs the service life of the crusher, greatly shortens the overhaul time of the crusher, prolongs the usage period ofquick-wear parts and greatly reduces the production cost.

The invention discloses a compact type double-tooth anti-backlash mechanical single pendulum head. The double-tooth anti-backlash mechanical single pendulum head comprises a box body, a main shaft, atransmission mechanism and a driving device, wherein the transmission mechanism and the driving device are arranged in the box body, the transmission mechanism comprises a driving pulley, a synchronous belt, a driven pulley, a speed reducer, a driving gear and a driven gear, and the driving pulley is connected with the output end of the driving device; the driving pulley and the driven pulley areconnected through the synchronous belt, the driven pulley is connected with the input end of the speed reducer, the output end of the speed reducer is connected with the driving gear, the driving gearis meshed with the driven gear, the driven gear is connected with the main shaft, and the driven gear can drive the main shaft to rotate. The transmission mechanism disclosed by the invention can carry out three-stage speed reduction to realize a large reduction ratio and output large torque; and meanwhile, due to the fact that the output torque is large, the torque needed by a single pendulum head can be met by using a small motor, the overall dimension of the motor is reasonably reduced, the internal structure of the pendulum head is compact, and the volume space occupied by the whole pendulum head can be reduced.

The invention provides a one-step forming machining method for a threaded single tool with double wiring pipes for connecting oil well pipes. The method includes that a component with threads to be machined is clamped on a jaw of a pipe thread machining machine tool and rotates along with a spindle of the machine tool; a threaded chasing tool is mounted on a toolbar of the machine tool and is provided with double teeth or teeth with the quantity integral multiples of two is axially and radially fed along with a tool table of the machine tool, and the moving track of the cutter is consistent with a taper line of the threads to be machined; and the axial feed of the machine tool is proper so that the tool is axially fed by a thread helical pitch when the spindle rotates for each circle, and two spiral lines of the threads to be machined are simultaneously cut by one-step feed. The one-step forming machining method has the advantages that the threads of the double wiring pipes can be efficiently machined on a common pipe thread machine tool or a numerical-control machine tool, and machining efficiency of the common pipe thread machine tool is more obviously improved. In addition, the dimension precision of thread machining is high, the quality of a surface is high, the threaded surface formed by the two spiral lines is in smooth transition, and sealing reliability of matching of threaded connection is guaranteed.

The invention relates to a gear double-tooth error measuring system. The gear double-tooth error measuring system is characterized in that an inductive transducer, a signal conditioning circuit, a data acquisition card, a computer and a displayer which are sequentially connected are included, the inductive transducer is connected with a movable sliding plate of a gear to be measured, the inductive transducer receives change amount signals of a gear double-tooth center distance, the change amount signals pass through the signal conditioning circuit and then are converted into analog signals to be transmitted to the data acquisition card, the data acquisition card conducts analog-digital conversion on the analog signals, afterwards, the analog signals are transmitted to the computer, the computer carries out curve-fitting processing on the analog signals to obtain error curve information, and the displayer is used for displaying. Compared with the prior art, the gear double-tooth error measuring system has the advantages that examination precision and efficiency are high, and the error curve can be observed.

The invention belongs to the technical field of broacher devices, in particular to an automatic backlash-eliminating dividing device used for a numeral control helical deep hole broacher. The device comprises a box body, an alternating current servo motor, an input-output mechanism, and a circular grating detection mechanism. In the device, scale division is controlled directly through the alternating current servo motor; and through pushing a driving axle to glide axially by an adjusting washer and a disc spring, the driving axle and a double-tooth backlash-eliminating mechanism consisting of driven wheels can automatically compensate to eliminate backlashes after a gear is worn. The driving device of the invention has the advantages of low cost and maintenance cost, high safety, and good reliability.

The invention relates to the technical field of wastewater treatment, and discloses an industrial wastewater treatment device which comprises a sedimentation tank, one side of the sedimentation tank is fixedly connected with a wastewater inlet, the other side of the sedimentation tank is fixedly connected with a wastewater outlet, an air dissolving pump is fixedly mounted below the wastewater outlet, and one end of the gas dissolving pump is fixedly connected with a gas dissolving nozzle and is positioned at the bottom of the sedimentation tank. Dissolved air generated by a dissolved air pump enters a sedimentation tank to enable suspended matter and oil water to rise, a motor drives a chassis to rotate to drive a double-tooth-direction chain belt to enable a cross rod to drive a slag scraping plate to rotate, the rising dissolved air is cut and reduced by a rotary knife, and the chassis drives a rotary arm to rotate to enable a swing rod to drive a sliding rod to move up and down in a sliding groove, so that the filter cloth is driven by the sliding rod to generate a wave shape, so that oil and water can float up more quickly, suspended matters are retained at the lower part and scraped into the slag accumulation groove by the slag scraping plate, and the problem that the suspended matters, the oil and water and the like float up together due to large dissolved air generated by the dissolved air pump and cannot be correspondingly treated is solved.

The invention relates to the technical field of circuit breakers, and discloses a quick switching-on mechanism. The quick switching-on mechanism comprises a direct current motor, a motor fixing platewhich is connected with a circuit breaker and is used for fixing the direct current motor, and an inner double-tooth rack which is slidably connected with the upper surface of the motor fixing plate,and the front end of the inner double-tooth rack is rotatably connected with a circuit breaker main mechanism lever bracket. The quick switching-on mechanism further comprises an incomplete gear whichis positioned in the internal double-tooth rack, can be meshed with the racks on the two sides of the internal double teeth during rotation, and is fixedly connected with an output shaft of the direct current motor. Compared with the prior art, the quick switching-on mechanism has the advantages that self-clutch of the circuit breaker is achieved through the inner double-tooth rack and the incomplete gear; re-buckling-closing operation is reliably achieved; electric operation and manual operation can be achieved at the same time; the rotating speed is increased through the direct current motor; rapid closing of the circuit breaker is achieved; the structure is simple; and installation is convenient.

The invention discloses a novel combined square file which comprises a file main body and a file handle. A cross section of the file main body is square, and four side faces of the file main body are respectively provided with first filing grains, second filing grains, third filing grains and fourth filing grains. The first filing grains and the third filing grains are single-tooth grains, the tooth pitch of the first filing grains is 1.5-2.1mm, the tooth pitch of the third filing grains is 0.5-0.8mm, the second filing grains and the fourth filing grains are double-tooth grains, the tooth pitch of the second filing grains is 0.21-0.32mm, the tooth pitch of the fourth filing grains is 0.17-0.2mm. By means of the mode, the novel combined square file is provided with multiple types of filing grains and can meet the requirement for different filing accuracy.

The invention provides a roller assembly for rolling double-tooth track steel and a rolling mill. The roller assembly for rolling double-tooth track steel comprises an upper roller, a lower roller, a left roller and a right roller, the left roller is provided with a left forming surface, the right roller is provided with a right forming surface, the upper roller is provided with an upper forming surface, and the lower roller is provided with a lower forming surface; the left forming face, the right forming face, the upper forming face and the lower forming face jointly define a rolling channel; the upper roller and the lower roller can move in the vertical direction; and the left roller and the right roller can move in the left-right direction. The roller assembly can be applied to double-tooth track steel with similar shapes but different sizes, and when the cavity wall of the rolling channel is abraded, online compensation can be realized without stopping production and disassembling the roller, so that the production efficiency is ensured, and the purchase cost of the roller is saved.

The invention discloses a transmission electric chuck for a planetary gear driven by a hydraulic motor. A fixed internal gear and a driven internal gear are provided with corresponding addendum circles, and the fixed internal gear and the driven internal gear are correspondingly replaced; and the tooth number difference of the fixed internal gear and the driven internal gear is 2, a planetary gear is fixedly installed on a planetary gear framework through the fixed internal gear and the planetary gear is engaged with the fixed internal gear. A hydraulic motor is connected with the planetary gear framework through a shaft coupling, and the driven internal gear is fixedly provided with a helical gear through a bearing; meanwhile, the driven internal gear is guaranteed to be engaged with the planetary gear and a jaw is installed in the helical gear. According to the invention, helical teeth of the chuck are driven by the planetary gear with double tooth differences and driven by the hydraulic motor so as to overcome the following defects of the traditional transmission electric chuck of planetary gear with small tooth difference: structure complexity, failure easiness, low transmission efficiency and easiness in causing accident due to overload.

The invention provides a flexible polar line for a wet type electrostatic dust collector. The straightness of the flexible polar line is good, and tiny dust is not prone to being bonded to the line; and the flexible polar line of the wet type electrostatic dust collector comprises a cathode line body, the cathode line body is formed by twisting a strip-shaped mother board, after twisting is carried out, the body is of a spiral-strip structure, and a plurality of sets of sawtooth discharge tips are arranged on the outer surface of the discharge area of the cathode line body in the spiral direction; each set of sawtooth discharge tips are of a double-tooth structure, and the cathode line is low in discharge inception voltage, large in line current density and even in current; and the discharge dead zone problem of an existing polar line is solved, the straightness is good, and the fine dust is not prone to being bonded on the line.

The invention relates to a novel double-tube charging mechanism of an automatic trimming-forming machine. The double-tube charging mechanism comprises a worktable base plate, a double-tooth material pulling device, a material moving mechanism, a material rollover resisting mechanism, a double-rail device, a double-rail fixing plate, an empty-tube material bin, an empty-tube separating mechanism and a full-material tube falling mechanism, wherein the empty-tube material bin is arranged at the upper side of the full-material tube falling mechanism; the double-rail device is arranged at the rear side of the material rollover resisting mechanism; the double-tooth material pulling device comprises a translating cylinder, upper and lower cylinders and double-tooth hook claws; the material moving mechanism comprises a movement jacking cylinder, a movement sliding rail and a material fixing rail; the material rollover resisting mechanism comprises a 180-degree rotating cylinder, a resisting cylinder, a resisting block and a material downwards-sliding rail; the empty-tube separating mechanism comprises a separating cylinder and a separating pressing plate; the separating pressing plate is fixed to the separating cylinder; and the separating cylinder is fixed to the double-rail fixing plate. The novel double-tube charging mechanism provided by the invention has the beneficial effects of increasing the productivity by several times, lowering the labor cost and improving the product quality.

The invention relates to a double-tooth hydrogen circulating pump rotor set and a double-tooth hydrogen circulating pump and provides a novel double-tooth screw rotor molded line. The double-tooth hydrogen circulating pump rotor set comprises a first double-tooth screw rotor and a second double-tooth screw rotor, wherein a molded line of the first double-tooth screw rotor comprises a straight line, a transition circular arc, an optimized curve, a point meshing cycloid and an envelope curve, the central angle of the transition circular arc is determined according to a temperature of a working environment, and a molded line of the second double-tooth screw rotor and the molded line of the first double-tooth screw rotor are completely conjugated except the optimized curve. The molded lines of the two double-tooth screw rotors are simple in composition and are both centrosymmetric graphs, so that no eccentric torque is produced during operation, and the conditions of static balance and dynamic balance are met. The optimized curve can ensure that each rotor has a relatively large air suction and exhaust hole and a certain icebreaking capacity and can also prevent a sharp point formed by the point meshing cycloida and addendum circles from abrading the corresponding rotors, so that the molded lines can be well protected, and the service life of each rotor is prolonged.

The invention relates to a method of preparing Alpha-aryl carbonyl compound. With the catalyst of four triphenylphosphine nickel or acetylacetone nickel ligand, aryl boric acid, Alpha-halogenated carbonyl compound, ligand and additive are dissolved in toluene, and after reaction for 10 to 24 hours in 50 to 100 DEG C, the Alpha-aryl carbonyl compound is obtained, wherein, the ligand is single-toothphosphine ligand or double-tooth phosphine ligand; and the additive is absolute potassium phosphate or tri-potassium phosphate. The invention, which utilizes the catalyst with low cost, stable substrate, easy obtaining and gentle reaction conditions, can not only catalyze arylation of ester, amide and ketone, but also can be compatible with beta hydrogen, thereby greatly expanding the range of the substrate. Moreover, the invention possesses great application potential and can directly constitute the main framework of the steride.

The invention discloses a double tooth screw which comprises a stainless steel or carbon steel rod body. A wood thread is arranged at the front end of the rod body, the connection rod body part of the tail end of the wood thread is formed into an external hexagon, the rear end of the rod body is provided with a machine thread, and an eight pointed star-shaped hole is formed in the section of the tail of the machine thread at the rear end of the rod body. The double tooth screw is used for connecting furniture and pipelines and solving the problems of inconvenience and deconstructive damage during assembly and disassembly, so that connection stability during assembly is ensured, and meanwhile the screw is concealed in an object needing to be connected without influencing the attractive appearance effect.

The invention discloses a synthetic method of mixed ligand coordination planar metal disulfide ene complex and particular relates to synthesis of mixed ligand coordination planar complex of two metal disulfide ene ligands with the similar electron push and pull capability. The method comprises the following steps that 95% of ethanol solution of N,N double-tooth cheland is added into a flask, a water solution with metal ionicsalt is slowly added into the flask, after even mixing and stirring, metal disulfide ene ligand L1 is weighed and dissolved in the solution, stirring is conducted for 30 minutes at the temperature from 70 DEG C to 80 DEG C, solid is filtered out of reaction solution and is washed through 10 mL of ethyl alcohol and water for three times; the obtained solid, the metal disulfide ene ligand L2, inorganic base and tetra-alkyl ammonium salt or kylphosphonium salt are mixed, 300-350 mL of water is added, stirring and heating is conducted, 250-300 mL of liquid is steamed out, then the reaction is stopped, and after being cooled, the solid is filtered out and washed through 10 mL of ice water for three times; organic solvent is added into the obtained solid for extraction, extraction liquid slowly volatilizes, and high-purity L1 and L2 ligand mixed coordination metal disulfide ene crystal can be precipitated.

The invention belongs to the petroleum pipeline technical field, and especially relates to a special thread direct connection type large diameter oil pipe sleeve comprising an oil conveying pipe and an oil pipe connecting sleeve; two ends of the oil conveying pipe are processed with outer threads matched with inner thread of the oil pipe connecting sleeve; the thread can be double-teeth or triple-teeth thread, each thread pitch cycle is 8.466 mm in length, and tooth height is 1.982mm; each thread pitch cycle comprises a tooth top and a tooth bottom, and both of which are 4.233 mm in length; in order to improve screwing speed, the lean angle on the tooth bottom of the outer thread on two ends of the oil conveying pipe in a screwing direction is designed to be 30 degrees, and the corresponding opposite direction angle is designed to be 3 degrees; the special thread direct connection type large diameter oil pipe sleeve is simple in structure, reasonable in design, and can effectively improve thread connection screwing speed and intensity.

The invention provides a double-tooth downhole pump follow-up centering eccentric wear prevention device, which is applied to a downhole pump eccentric wear prevention working condition. The eccentricwear prevention device consists of a centering supporting device, a centering body, a cone-fin locking device, a conical tooth type centering device, an impeller tooth type centering device and a positioner, wherein the centering body carries out centering positioning according to the positioner and is supported by the centering supporting device, liquid of the downhole pump is sprayed to an annular space of a rod pipe according to a flow guide hole and an upper spraying hole of the centering body, the conical tooth type centering device and the impeller tooth type centering device together form a double-tooth type double eccentric wear prevention device and complete a spacing in both up and down directions according to an upper spacing plate and a spacing baffle, and the conical tooth type centering device achieves a follow-up centering of a plunger and a pump cylinder according to a double-layer dynamic pressure liquid film and prevents solid particles from being deposited above theplunger through a stirring action; the cone-fin locking device completes cone-fin type underground rapid positioning according to a cone-fin body and locks the centering body in the centering supporting device, thereby avoiding eccentric wear of the downhole pump.

The invention discloses an industrial robot for automatic disassembly of interference fit parts, belonging to the technical field of automatic disassembly of assembled parts. It includes a U-shaped sleeve frame, a part locking device, a part impact device and a double-rod piston cylinder; the part locking device includes a horizontal connecting rod A, a horizontal connecting rod B, a V-shaped connecting rod A, a V-shaped connecting rod B, a circular connecting rod Arc gripper A, arc gripper B and locking baffle; parts impact device includes compression coil spring, shock slider, shock cone, shock shaft, double-tooth ratchet, pawl, fixed pin, compression coil spring, Wire rope and impact rack; when the parts locking device locks the outer parts of the assembly, the arc clamping jaw A and the arc clamping jaw B are in contact with the upper wall and side wall of the outer assembly parts at the same time. The invention is an industrial robot which has a simple and reasonable structure, can perform four-point locking on the outer parts of the assembly, and repeatedly impact the inner parts of the assembly, so as to improve the effect of disassembling and assembling the parts.

The invention discloses an elevator practical training platform. The elevator practical training platform comprises an simulation control area and a hall car door combination area, wherein the simulation control area comprises a control cabinet, a simulation shaft and a speed limiter, the hall car door combination area comprises a landing door combination, a car door combination, moving sliding rails and a fault simulation table, wherein a lift car and a counterweight are arranged in the simulation shaft, the lift car and the counterweight are in linkage with a traction wheel through a double-tooth synchronous wheel and a synchronous belt, the landing door combination comprises a landing door sill, the car door combination comprises a car door and a car door sill, the moving sliding railscomprise the front-back moving sliding rail and the up-down moving sliding rail, the front-back moving sliding rail is arranged at the car door sill and the lower side of the landing door sill, and anelectric switch of an elevator is installed in the fault simulation table. According to the technical scheme, the linkage operation of the operation state of the car can be more intuitively embodied,the fault simulation table can be used for setting faults and removing the faults so that the operational and thinking ability of students can be improved, and the safety problem of personnel and equipment caused by misoperation of the students can be prevented.

The invention relates to a wall structure for protecting a spent fuel pool. The periphery of the spent fuel pool (1) is provided with an auxiliary well (2) connected thereto for loading or cleaning spent fuel. The wall structure The walls include the wall (1‑1) forming the spent fuel pool (1) and the wall (2‑1) forming the auxiliary well (2), and the wall (1‑1) forming the spent fuel pool (1) Together with the wall (2‑1) forming the auxiliary well (2), they form a double-wall tooth-shaped occlusal structure. (2) There are toothed gaps of equal width between the body of walls (2-1). The wall structure provided by the present invention is simple and easy to construct, and the wall structure can effectively reduce the impact on the structure of the spent fuel pool caused by the vertical impact in the auxiliary well adjacent to the spent fuel pool, and at the same time meet the seismic requirements .

The invention provides a twin-tooth radiating fin, an outdoor cabinet adopting the radiating fin as cooling device and a cooling method thereof. The twin-tooth radiating fin comprises a blade connecting piece, a first and a second blade groups which are connected with the blade connecting piece and arranged on two sides thereof. The outdoor cabinet includes a sealing cabinet body, an internal circulation air passage is formed between the inside of the sealing cabinet body and a baffler in the cabinet, a heat generating device is arranged in the internal circulation air passage, a twin-tooth radiating fin is arranged on the sealing cabinet body, the first blade group thereof is arranged outside of the sealing cabinet body, the second blade group is arranged in the internal circulation air passage, the internal circulation air passage is provided with a blower fan. After working, the blower fan in the internal circulation air passage is started, heat generated by the heat generating device is carried to the internal circulation air passage by airflow, transmitted to outside of the sealing cabinet body through the twin-tooth radiating fin, then dispersed to external environment. By utilizing the new twin-tooth radiating fin structure, the outdoor cabinet can satisfy protecting and cooling requirements without using air conditioners and heat exchangers.

The invention discloses a novel hinge. The novel hinge comprises a hinge body with a hinging shaft and two hinge sheets; one hinge sheet is single-tooth hinge sheet hinged to and arranged at the middle segment position of the hinging shaft in a sleeving manner through a middle segment shaft sleeve part on the inner side of the hinge main body; the other hinge sheet is a double-teeth hinge sheet hinged to and arranged at the upper and lower positions of the hinging shaft in a sleeving manner through an upper segment shaft sleeve part and a lower segment shaft sleeve part on the inner side of the hinge sheet; insulating rings are hooped to the middle segment position of the hinging shaft, and metal rings are hooped to the middle segment positions of the insulating rings; the positions, corresponding to the metal rings, of the two hinge sheets are provided with socket devices; each socket device comprises an insulating shell, metal contact pressing pins and springs; the metal contact pressing pins and the springs are arranged in the insulating shells; the inner ends of the metal contact pressing pins are pressed on the outer faces of the metal rings in a contact manner; the springs are elastically ejected between the outer ends of the metal contact pressing pins and the inner faces of the outer sides of the insulating shells; and the insulating shells are provided with metal powerconnection sockets in contact connection with the metal contact pressing pins. The novel hinge can guide a fixed power source of a site to door-mounted electric equipment to supply power to the door-mounted electric equipment, and therefore cost is saved, and the novel hinge is convenient and practical.

The invention discloses a supporting and adjusting device suitable for a building curved surface. The supporting and adjusting device comprises a first bolt, an adjusting device, a stretching rod, a stretching outer pipe, a second bolt, an upper adjusting plate, a fixing rod, an equipment mounting plate, a pushing block, a pushing groove, a limiting block, a linkage block, a first sliding groove, a third bolt, a second nut, a bottom adjusting device and the like. The supporting and adjusting device is reasonable and simple in structure, low in production cost, convenient to mount and complete in function; through the arranged adjusting device, an adjusting knob is pushed, meanwhile, a locking adjusting pressing plate is pushed into a toothed groove and a common groove, the toothed end of the locking adjusting pressing plate is rotated to the toothed groove, and the upper adjusting block is driven to rotate through meshing of double teeth to adjust the angle position; and after adjusting is completed, the toothed end of the locking adjusting pressing plate is rotated into the common groove, at the moment, the third nut is rotated, the locking pressing plate is pushed into the common groove on the left side in the rotating process, the third nut is locked for fixing, and thus fixing of the curved surface angle is completed.