139results about How to "Reliable fixing method" patented technology

The invention discloses a belt conveyor sweeper, which comprises scrapers, a scraper connecting mechanism and a scraper adjusting mechanism, wherein the scrapers are arranged along a belt arc surface and have an arc shape matched with the belt arc surface; the end parts of the scrapers are contacted with a belt; the scraper connecting mechanism is provided with a shaft; the scrapers are axially and fixedly connected along the shaft; two ends of the shaft are hinged with a side beam of a belt conveyor; the scraper adjusting mechanism is provided with a lever; and one end of the lever is provided with a counterweight block, and the other end of the lever is fixedly connected with the shaft. The belt conveyor sweeper has a sweeper scraper structure which is better matched with the conveyor belt; a fixing mode is more stable and reliable; in a sweeper adjusting device, due to the adoption of a gravity adjusting device, contact force between the scrapers and the belt can be adjusted in multiple directions through torque generated by the shaft, so that the defect of vertical contact force between the scrapers and the surface of the belt is overcome, the protection of the belt is facilitated, and the counterweight block can be adjusted in an addition and subtraction mode; and the belt conveyor sweeper has higher sweeping capacity, a more optimized structure and low manufacturing cost and is convenient to mount, maintain and replace.

The invention discloses a sensing head of an all-fiber current transformer. Grooves are respectively formed in an upper cover of the sensing head and a lower cover of the sensing head; a sensing optical fiber, an all-fiber one-fourth wave plate and an optical fiber end surface reflecting mirror form an optical fiber sensing part of the all-fiber current transformer by a welding mode; the optical fiber sensing part is uniformly wound on a sensing framework in a spiral manner; the sensing framework wound with the optical fiber sensing part is placed in the groove of the lower cover of the sensing head and integrally packages the upper cover of the sensing head with the lower cover of the sensing head; a lead head which is internally provided with a lead hole is processed in the upper cover of the sensing head; and a polarization-preserving optical fiber is used as a lead-out end of the sensing head of the all-fiber current transformer, is partially connected with the optical fiber sensing part and is led out of the lead hole. According to the sensing head disclosed by the invention, various negative influences such as linear birefringence, Verdet constant temperature effect and one-fourth wave plate phase delay temperature effect of the optical fiber sensing part can be effectively eliminated.

The invention discloses a semiconductor device test system and a test method thereof. The test system comprises an upper computer, an oscilloscope, a main control system PLC, a circuit control moduleand a test box body. An automatic tool is arranged in the test box body, a tested piece is placed on the automatic tool, and a test fixture is arranged right above the tested piece. The automatic toolcomprises a driving device, the driving device drives the automatic tool to move so as to drive the tested piece to be connected with the test fixture, and the main control system PLC is connected with the test box body, the test fixture, a main circuit unit and a gate pole driving unit. The upper computer is connected with the oscilloscope, and the oscilloscope is connected with the test box body. The advantages of the present invention are that the semiconductor device test system with a specific testing circuit and a testing system structure is designed, the theory is combined with the practice, and all devices in the system are matched with one another to test the semiconductor device.

The invention discloses a safety type bus duct digital system. The safety type bus duct digital system comprises a bus duct, an inserting box, a starting end box, a termination end cover and a bus duct hoisting part, and is characterized in that one end of the bus duct is connected with the starting end box; the other end of the bus duct is fixedly provided with the termination end cover; the topof the bus duct is hoisted at the top of a wall through a bus duct hoisting piece; and the bottom of the bus duct is inserted with the inserting box. The safety type bus duct digital system is high inoverall structural strength, simple and convenient in mounting method, rapid to mount, high in overall structure safety performance, simple in part manufacturing process and low in whole structure production cost.

The invention discloses an installation structure of a C stand column interior trimming plate of an automobile an overlapping surface arranged on an interior trimming plate body and an overlapping sink platform arranged on an object placing plate, wherein, the overlapping surface is matched with the overlapping sink platform correspondingly. The installation structure is characterized in that an oblique hook bent downwards is arranged at the left end of the overlapping surface of the interior trimming plate body; an overlapping slot hole is arranged at the left part of the overlapping sink platform of the object placing plate; and the oblique hook is matched with the overlapping slot hole correspondingly. The installation structure has the advantages of being simple in assembling structure and reliable in fixed manner, having no abnormal sound, and solving the problems that the overlapping surface of the C stand column interior trimming plate of the automobile and the object placing plate is loosed, and the clearance is not even.

The invention discloses a local discharge detection device and method for a GIS. The local discharge detection device comprises a supporting plate and a sensor fixing frame, an ultrasonic sensor is arranged on the sensor fixing frame, an installation rack is arranged on the supporting plate, a plurality of fixing holes are formed in the supporting plate, and the sensor fixing frame is connected with the installation rack. Connecting rods are arranged in the fixing holes, the connecting rods are slidably connected with the supporting plate, and each connecting rod is provided with a connectingblock, a limiting block and a compression spring, wherein the connecting block and the limiting block are arranged on the two opposite sides of the supporting plate, the connecting block and the ultrasonic sensor are located on the same side of the supporting plate, the compression spring is arranged on the connecting rod and located between the supporting plate and the limiting block, and the connecting block is provided with a sucker. By means of the local discharge detection device and method for the GIS, the problem about fixing of an ultrasonic detection sensor and the problem about testing of a traditional handheld sensor are mainly solved.

The invention discloses a proximal femur internal fixation system with minimal invasion, relating to an internal fixation system used for proximal femur comminuted fracture, femoral neck fracture, subtrochanteric fracture and femur backbone fracture. The internal fixation system comprises an internal fixation steel plate, an internal fixation bolt and a locking device, wherein the internal fixation steel plate adopts a dynamic hip screw steel plate or a proximal femur internal steel plate, the dynamic hip screw steel plate is composed of a head part and the rod part, and the proximal femur internal steel plate is composed of a head part and a rod part; the locking device comprises a rotary pin, a sliding pin, a spring and a locking disc; the internal fixation bolt comprises a combined tension force bolt or a combined hollow bolt, a hollow bolt, a spongy bone bolt, a cortical bone bolt and a locking bolt, wherein the combined tension force bolt is composed of a connecting sleeve, a connecting bush and a tension force bolt; the combined hollow bolt is composed of a hollow bolt and a bolt sleeve. The internal fixation steel plate and the internal fixation bolt are connected and fixed by the locking device, which can simplify operation steps, shorten operation time and leave small cut.

The present invention relates to a lens driving device and more particularly relates to a voice coil motor for driving a liquid lens and a lens group thereof. The voice coil motor for driving the liquid lens comprises a seat body, a carrier and a driving device. The seat body has a first receiving cavity and a second receiving cavity which are distributed along an optical axis and are used for fixing a first lens and the liquid lens. The carrier is set in the first receiving cavity, the carrier is fixedly provided with a transmission component whose pressing portion is fixedly disposed on a side of the liquid lens adjacent to the first lens. The driving device is set in the first receiving cavity and comprises a mover and a stator which is magnetically induced with the mover and drives themover to move up and down along the optical axis, the stator is fixedly set on the seat body, the mover is fixedly disposed with the carrier, and the transmission component is fixed on the carrier tomove up and down along the optical axis with the carrier to adjust the curvature of the liquid lens. The technical problem to be solved by the present invention is to drive the liquid lens to realizeoptical vibration prevention and autofocus functions.

The invention relates to engraved intaglio plate polishing equipment. The equipment comprises a control system, a pneumatic system, a frame capable of placing an intaglio plate, an X-axis servo mechanism, a Y-axis servo mechanism, a Z-axis servo mechanism and a polishing device, wherein the X-axis servo mechanism, the Y-axis servo mechanism and the Z-axis servo mechanism are arranged on the frame; the polishing device can be driven by the Z-axis servo mechanism to move along the Z-axis direction; the polishing device comprises a constant-pressure control cylinder, an electric device, a polishing head, a polishing pad and a polishing liquid supply system; the constant-pressure control cylinder is arranged on the Z-axis servo mechanism; the electric device is arranged on the constant-pressure control cylinder; the polishing head is arranged at the output end of the electric device; the polishing pad is arranged on the polishing head; and the polishing liquid supply system can provide polishing liquid for the polishing head. The engraved intaglio plate polishing equipment solves the technical problems of low safety, environmental-friendly and healthy hidden danger, low polishing efficiency and low polishing quality of the polishing method in the prior art and has the advantages of safety, environmental protection, high polishing efficiency and high polishing quality.

The invention provides an ionic exchange membrane electrolytic cell device for treating chemical production wastewater. The ionic exchange membrane electrolytic cell device comprises a wastewater chamber, a first fresh water chamber and a second fresh water chamber, wherein the first fresh water chamber and the second fresh water chamber are positioned at two sides of the wastewater chamber; the wastewater chamber is separated from the first fresh water chamber and the second fresh water chamber by an anionic membrane and a cationic membrane; an anode plate of the electrolytic cell is positioned in the fresh water chamber close to the side of the anionic membrane; a cathode plate of the electrolytic cell is positioned in the fresh water chamber close to the side of the cationic membrane. The ionic exchange membrane electrolytic cell device has the positive benefits that the saliferous chemical wastewater is treated according to a membrane electrolysis technology, the electrolytic cell is of a three-chamber structure and the anionic membrane and the cationic membrane are mounted in the same electrolytic cell, so that the equipment treatment time is greatly shortened relative to the present two-chamber structure and the wastewater treatment efficiency is improved.

The invention discloses a bending high-voltage shielding plug, and relates to the electric connector field of the electric appliance field of new-energy vehicles, industrial equipment, urban rails and railway vehicles. The bending high-voltage shielding plug comprises a shell assembly, a contact piece, an installation plate assembly and a tail accessory. The shell assembly is composed of a locking handle, a locking block, a plug shell, a seal ring and a signal pin. Locking and unlocking of a connector are achieved by adopting a mechanism which can convert handle rotation motion into rectilinear motion of the plug shell relative to a socket shell, the electric connector can be normally used on the condition that the operation space is narrow, the problem that a locking mode of a traditional electric connector cannot be normally used in the narrow operation space is solved, and meanwhile the handle has the power-assistant effect so that the operability of the connector is improved.

The invention provides a trachea cannula fixing device, which comprises a dental pad, wherein the dental pad comprises an occlusion part and a cannula fixing part; the occlusion part is matched with teeth on one side of an oral cavity; the cannula fixing part is connected to the occlusion part, is positioned at one end of the occlusion part and projects towards an outer side; the cannula fixing part is provided with an axial through hole, and projects outwards; both sides of the occlusion part are connected with fixing bands; the dental pad is made of an elastic material. The trachea cannula fixing device has the advantages of simple structure, stable and reliable fixing way, small oral cavity occupation area and convenience in clearing excreta in the oral cavity; meanwhile, the trachea cannula fixing device is prevented from hurting the teeth of a patient, and is suitable for wide clinical application.

The invention discloses a keyboard clamping mechanism based on double effects of pressure and suction. The keyboard clamping mechanism based on the double effects of pressure and suction combines a pressing plate module fixing mode and a vacuum adsorption fixing mode and enables a to-be-tested keyboard to be flatly fixed. The keyboard clamping mechanism based on the double effects of pressure and suction comprises a bottom plate, an entering-exiting mechanism, a vacuum adsorption carrying mechanism and a pressing plate mechanism, wherein the entering-exiting mechanism is fixedly installed on the bottom plate, the vacuum adsorption carrying mechanism is in sliding fit with the entering-exiting mechanism, the pressing plate mechanism is arranged above the entering-exiting mechanism, and the entering-exiting mechanism, the vacuum adsorption carrying mechanism and the pressing plate mechanism are electrically connected with an external MCU control module. The keyboard clamping mechanism based on the double effects of pressure and suction is applied to the technical field of keyboard quality testing.

The invention relates to a tunnel lining trolley, an operating method thereof and a mounting method of a pre-grouting pipe fixing device. The tunnel lining trolley comprises a trolley formwork, a pre-grouting pipe, a connecting unit and a grouting pipe. Through the arrangement of the connecting unit, the problem that a trolley panel and the pre-grouting pipe are prone to looseness is solved, and the fixing way is more reliable. Meanwhile, fixed connection between the pre-grouting pipe and the grouting pipe is further reinforced through the arrangement of a connecting pipe fitting. When the injection pressure of the grouting pipe is high, the stability of the whole tunnel lining trolley can still be kept.

The invention relates to a fixing device for industrial adhesive product production. The fixing device comprises a base, a fixing mechanism for clamping an industrial adhesive product at the top end of the base, and a transmission mechanism for driving the fixing mechanism to directionally move in the base, wherein the fixing mechanism is in sliding connection with the upper surface of the base, and the transmission mechanism is fixedly connected to the lower end of the fixing mechanism; and the fixing mechanism comprises a fixing table for containing the industrial adhesive product, vertical clamping plates which are arranged at the two sides of the upper end of the fixing table and are parallel to each other, and a transmission rod for driving the clamping plates to move horizontally, an electronic scale is arranged at the upper end of the fixing table, a pressure sensor is arranged in the middle of the transmission rod, and the pressure sensor and the electronic scale are electrically connected to a controller respectively. According to the fixing device for industrial adhesive product production, materials in various shapes can be fixed through the fixing mechanism, the electronic scale and the pressure sensor on the fixing mechanism can measure the weight of the fixed materials and monitor the clamping force, and damage to a clamped object can be avoided while the fixing effect is guaranteed.

The invention discloses a disposable nail box for laparoscopic straight-line cutting stapling apparatuses. The disposable nail box comprises a nail box base, a nail box shell is installed in the rear of the nail box base, an upper nail-abutted seat cover is rotatably installed on the nail box base, a nail-abutted seat is installed in the upper nail-abutted seat cover, a nail bin is installed in the nail box base, a knife push slice is movably installed between the nail box base and the nail box shell, and a cutting knife is fixedly installed at the front end of the knife push slice; an elastic support used for keeping the upper nail-abutted seat cover open is arranged between the upper nail-abutted seat cover and the nail box base and comprises a V-shaped elastic piece, the first end of the V-shaped elastic piece is fixedly installed on the upper nail-abutted cover, and the second end of the V-shaped plastic piece is abutted against the upper surface of the nail box base or the upper surface of the nail bin. The fixing mode of the V-shaped elastic piece is solid and reliable, bouncing-off angle of a jaw cannot be affected due to looseness of the position where the elastic piece is installed, elasticity of the elastic piece is fully utilized, and the situation that the jaw can be opened to the maximum angle so that a doctor can hold diseased tissue to be removed to the right place is guaranteed.

The invention belongs to the technical field of pneumatic valve repairing, particularly relates to a valve and provides an inspecting and repairing tool and a repairing process for the sealing surfacestate of an adjusting valve with a valve element being provided with a C-shaped sealing ring. The inspecting and repairing tool and the repairing process cover the conventional repairing problem of the sealing surfaces of the valve element with the C-shaped sealing ring and a valve seat. The repairing process comprises the following steps that firstly, the valve element and the valve seat are inspected, and repairing is prepared; secondly, the valve seat sealing surface is repaired; thirdly, a blue oil test is conducted; fourthly, the valve element sealing surface is repaired; fifthly, the valve element sealing surface and the valve seat sealing surface are inspected after grinding; and sixthly, after the valve is reassembled, an on-line leakage rate test is conducted. The sealing surfaces of the adjusting valve with the valve element being provided with the C-shaped sealing ring structure can be effectively inspected and repaired during construction and fitting, debugging and operation of a pressurized water reactor nuclear power unit; and the repairing process for the sealing surfaces is flexible, efficient, convenient, rapid and easy to control precisely, the repairing processand the principle thereof can be popularized to the situation of repairing the sealing surfaces of other adjusting valves with the valve elements being provided with the C-shaped sealing rings.