69results about How to "Play a fine-tuning role" patented technology

The invention discloses a reaction wall and a construction method of a reaction dado; a plurality of loading holes with a certain hole diameter or hole distance are pre-embedded in the reaction wall and the reaction dado; the construction method mainly utilizes a tailor-made loading hole positioning mould to position each loading hole; a plurality of loading hole positions meeting the standard of the loading hole diameter and hole distance are arranged on the loading hole positioning mould, then matched with positioning stuffs or positioning plugs; therefore, the loading holes can be positioned conveniently and accurately, then fixed; unlike the prior method which measures while fixing, therefore the construction method can greatly improve the hole distance precision of each loading hole and reduce construction man-hours.

The invention discloses a glass lamination machine for producing insulating glass. The glass lamination machine for producing the insulating glass comprises a feeding device, a lamination working table, a suction cup device, a film frame and a protective cover, the feeding device comprises a feeding rack and a feeding plate, the lamination working table is provided with a cushion, vent holes are evenly formed in the surface of the cushion, supporting springs and a horizontal sliding device are arranged in a cavity of the cushion, the suction cup device comprises fixing frames and vertical suction cups, the two adjacent fixing frames are connected through a connecting rod, and a lead screw is arranged at the upper end of each vertical suction cup. The glass lamination machine for producing the insulating glass is simple in structure and strong in practicability; the original design of feeding through an escalator is improved; by means of a traction motor, feeding of glass is more convenient and simple, and the safety performance of operation is improved; by means of the cushion, a protective effect on the glass can be achieved, the placed glass can be firmly sucked by horizontal suction cups in the cushion, the movement of the glass is avoided, the energy consumption is reduced, and the comprehensive utilization efficiency is increased.

The invention belongs to the technical field of municipal engineering, and specifically relates to a novel municipal inspection well structure and a construction method. The novel municipal inspectionwell structure composed of a prefabricated pitshaft, a manhole cover, a base course reinforcement layer, a force holding well ring, color steel fiber concrete and the like, wherein the base course reinforcement layer is located on the periphery of the prefabricated pitshaft and at the bottom of a road base course at the same time; and the force holding well ring is inlaid in the road base course,the manhole cover is fixed to the force holding well ring, and the color steel fiber concrete is arranged on the periphery of the manhole cover with the same color as the road surface. According to the novel municipal inspection well structure and the construction method, intensity on the periphery of an inspection well is improved, the construction efficiency, quality and durability of the inspection well are improved, the accuracy of the mounting height of the well ring is realized, and unification of the color on the periphery of the manhole cover and the color of a road surface structureis realized.

The invention discloses a device for measuring runout of a rotating member, which comprises a base, a fixing component and a sliding component, wherein the internal part of a body of the fixing component is rotatably provided with a first shaft, a center hole of the first shaft is slidably provided with a first tip and a first adjusting screw, one end of the first tip is in threaded connection with the first adjusting screw, a screw cap of the first adjusting screw is isolated at the external part of the first shaft through a first cap tightening nut, and the first cap tightening nut and the first adjusting screw are provided with a first rolling bearing therebetween; the internal part of a body of the sliding component is rotatably provided with a second shaft, a center hole of the second shaft is slidably provided with a second tip and a second adjusting screw in sequence, one end of the second tip is in threaded connection with the second adjusting screw, a screw cap of the second adjusting screw is isolated at the external part of the second shaft through a second cap tightening nut, and the second cap tightening nut and the second adjusting screw are provided with a second rolling bearing therebetween. The device disclosed by the invention is applicable to core shafts with the length being various, and the stability of a gear assembly under an installation state is improved through a fine adjusting mechanism.

The invention discloses a hooking test device of location grids of a reactor fuel assembly. The hooking test device comprises a frame base plate, a frame top plate and a vertical column which is connected between the frame base plate and the frame top plate, wherein a horizontal moving assembly is mounted on the frame base plate; a vertical moving assembly is mounted on the frame top plate. Through using the hooking test device, two grids are mounted on the horizontal moving assembly and the vertical moving assembly respectively; due to the movement of the horizontal moving assembly, a transverse force in the horizontal direction between the grids can be tested; due to the movement of the vertical moving assembly, vertical stress of the grids can be tested, so that an experiment of a hooking state between the grids can be simulated, and the goal of testing the grids can be achieved.

The invention relates to a two-way pressure-bearing fluororubber fireproof butterfly valve, which comprise a valve body and a butterfly plate. The valve body is provided with a valve seat; the butterfly plate is provided with a sealing ring which forms a sealing pair with the valve seat, and a pressing plate which clamps and fixes the sealing ring on the butterfly plate from the right side of thesealing ring; the sealing surface of the sealing ring is a front conical surface of which the apex is positioned on the right side; a closed internal gap of a cavity is formed between the sealing ring and the pressing plate; the pressing plate is provided with a pressure guide through hole for communicating the cavity with a space on the right side of the pressing plate; the left side face of thesealing ring is an internal conical surface of which the apex is positioned on the right side and a bus and a central line form an included angle of 90 degrees to beta; and an elastic fireproof ring is arranged in a gap area between the left side face of the sealing ring and the butterfly plate. Through designs of the cavity, the pressure guide through hole and the elastic fireproof ring, the butterfly valve integrates various functions of two-way sealing, fire prevention and fine adjustment, has a simple structure, high manufacturability, low processing difficulty and a wide pressure application range, and is particularly suitable to be used under high pressure.

The invention discloses a detecting gauge applicable to a battery chamber. The detecting gauge is characterized by comprising a gauge main body, wherein a plurality of positioning columns for being matched with positioning holes of the battery chamber are arranged on the gauge main body; limiting blocks are arranged around the gauge main body; a convex hull positioning block in match with a convex hull structure of the battery chamber is also arranged on the gauge main body; and a positioning arc with same standard radian as that of the convex hull is formed at one side of the convex hull positioning block close to the limiting block. The detecting gauge applicable to the battery chamber provided by the invention has the beneficial effects that: structure is simple, operation is convenient, detection accuracy is high, detection is realized and a fine tuning function is achieved at the same time, and detection efficiency is greatly improved.

The invention discloses a flow restricting ring, which is simple in structure, good in flow restricting effect and can be adjustable. The flow restricting ring comprises a ring body (1), a flow restricting pillar (2), a ring-shaped bracket (3) sleeved in the ring body (1) and fixedly connected with the flow restricting pillar (2), and a flow restricting rubber ring (4) sleeved on the flow restricting pillar (2), wherein a flow restricting hole (5) is formed between the flow restricting pillar (2) and the ring-shaped bracket (3); an overflow groove (6) is formed at the circumference of the flow restricting pillar (4); an adjusting ring (7) is coaxially arranged above the ring-shaped bracket (3); a plurality of adjusting grooves (8) are formed at the circumference of the ring-shaped bracket (3); and adjusting bulges (9) matched with the adjusting grooves (8) are arranged at the circumference of the adjusting ring (7). The flow restricting ring can be applied to the technical field of wall-mounted furnaces, water heaters and other pipeline equipment.

The invention discloses an intelligent roller blind type window, and relates to the field of building closing devices. The intelligent roller blind type window comprises a window frame, transparent soft plastic film, a roll core, a roll shaft and a vertical rod, the roll core, the roll shaft and the vertical rod are all arranged in the window frame, one end of the transparent soft plastic film is arranged in the roll core in a rolling mode, and the other end of the transparent soft plastic film is wound around the roll shaft and then fixed on the vertical rod. The intelligent roller blind type window further comprises a power mechanism which drives the roll core and the roll shaft to move and a control circuit which controls the power mechanism, and the transparent soft plastic film can be furled in the roll core or unfolded in the window under the action of the power mechanism. The intelligent roller blind type window has the advantages that the transparent soft plastic film which can be furled is utilized to serve as a window sash and has the advantages that cleaning is easy and others can not be hurt after the transparent soft plastic film is damaged; when the window is closed, two layers of the transparent soft plastic film which are separated from each other are formed on the window, and the transparent soft plastic film has stronger sound insulation and thermal insulation functions; the window can be automatically closed during wind blowing or raining through the control circuit, window intellectualization is achieved, and the lives of people are more convenient.

The invention provides a relay type corridor elevator. The relay type corridor elevator comprises a frame, a man carrying mechanism, a power mechanism and rails. The bottom end of the man carrying mechanism is flush with the ground of the corridor at the end positions. The power mechanism is arranged in the frame and is used for providing power for the man carrying mechanism. The rails are used for limiting the moving trajectory of the man carrying mechanism and ensuring that the man carrying mechanism is always kept at the horizontal position. The rails comprise a first rail, a second rail and a third rail. Each rail is divided into three sections, wherein the upper section is arranged in the horizontal direction, the middle section is parallel to the slope surface of the corridor, and the lower section is arranged in the vertical direction. The relay type corridor elevator can be mounted on the railing side or the backup wall side of the corridor; the moving trajectory of the man carrying mechanism is set as a fold line, so that when the man carrying mechanism reaches the end positions at the upper end and the lower end of a stair, the bottom surface is directly flush with the ground of the corridor, and the effect of saving the space of the corridor is achieved by a simple and effective way; and the relay type elevator is convenient and practical.

The invention discloses a modular LED double light source street lamp, which comprises a main body of the lamp and a reflection cup. The reflection cup of the lamp comprises reflection areas (A, B), a reflection cup frame (C) and a lamp stand mounting hole (E), the reflection areas (A, B) of the reflection cup consist of reflection planes or reflection surfaces (1, 2, 3, 4, 5, 6) with arc-shaped structures respectively, and are connected into a whole through the reflection cup frame (C) with a thickness H2 within the range of between 1 and 30 millimeters, the lamp stand mounting hole (E) with H3 not less than 15 millimeters is arranged between the reflection areas, a height H1 of the reflection areas is within the range of between 15 and 30 millimeters, an included angle a1 is within the range of between 90 and 150 DEG, an included angle a2 is within the range of between 10 and 30 DEG, an included angle a3 is within the range of between 10 and 100 DEG, an included angle a4 is within the range of between 10 and 30 DEG, the height H1 is within the range of between 15 and 30 millimeters, and an included angle a5 is within the range of between 10 and 100 DEG. A light beam of a modular LED light source is reflected out through a light distributor, thereby effectively solving the axial problem of LED luminescence; the actual lighting effect of the lamp is strengthened through the change of the light distributor and the installation direction of the lamp; the lamp can reach or exceed the requirement of lighting technology and the use effect of lighting grade lamps; and the lamp has remarkable social and economical benefits.

The invention discloses a material balance. The material balance comprises a bracket, a hopper and a weighing sensor, wherein the bracket is provided with a weighing module strut, a weighing bracket 1 and a weighing bracket 2; the weighing module strut and the bracket are fixedly connected; the weighing sensor is born on the weighing module strut; the left end of the weighing bracket 1 is supported on the bracket; the right end of the weight bracket 1 is supported on the weighing sensor; the left end of the weighing bracket 2 is supported on the bracket; the right end of the weight bracket 2 is supported on the weighing sensor; the left ends of the weighing bracket 1 and the weighing bracket 2 are provided with protrusions respectively; the corresponding part of the bracket is provided with a groove corresponding to the protrusion; the hopper is provided with three supporting ears; the supporting ear of the left side is supported on the weighing bracket 1; the front supporting ear and the rear supporting ear are supported on the weighing bracket 2; the supporting ears are provided with the protrusions; and the weighing bracket 1 and the weighing bracket 2 are provided with the grooves corresponding to the protrusions. The material balance has the characteristics of good effects of vibration and shaking prevention, high precision, and simple structure.

The invention belongs to the field of smelting devices, and particularly discloses a fixing device of a casting box. The fixing device comprises a fixed seat, a first fixed frame, a second fixed frame, a first gear and a second gear, wherein threaded holes are formed in the first fixed frame and the second fixed frame; the two ends of a bidirectional screw are in threaded connection with the threaded hole of the first fixed frame and the threaded hole of the second fixed frame respectively; a plurality of locating bosses are arranged at the upper end of the first fixed frame; a plurality of locating blocks are arranged at the lower end of the second fixed frame; blind holes are formed in the lower ends of the locating blocks; locating balls and springs are arranged in the blind holes; the lower ends of the springs are connected with the locating balls; the diameter of the blind holes is smaller than the diameter of the locating balls; the first gear is fixedly connected at the middle part of the bidirectional screw; the first gear meshes with the second gear; the fixed seat is rotatably connected with the second gear; and the second gear is fixedly connected with a connecting rod. According to the fixing device, connection parts of an upper sand box and a lower sand box are guaranteed to be in the same horizontal plane while the casting box is fixed, the fixing effect of the casting box is good, and the casting quality of a product is prevented from being affected.

The invention relates to a rail plate locking seat of a magnetic levitation rail. The rail plate locking seat is characterized by comprising a base plate (1). A pair of vertical plates (2) are arranged on the base plate, and one sides of the vertical plates are provided with opening grooves (2a) matched with an F type rail plate (10). The rail plate locking seat has the advantages that the structure is simple, mounting and demounting are convenient, the manufacturing cost is low, high adaptability is achieved, and the rail plate locking seat can be installed on magnetic levitation rail plates with different specifications.

The invention relates to the technical field of measurement. The invention discloses a displacement detection system for measurement. The displacement detection system comprises a base platform, a reference object placing assembly is arranged on one side of the upper surface of the base platform; a sensor erecting mechanism is arranged on the other side of the base platform; the sensor erecting mechanism comprises a first longitudinal sliding assembly and a transverse sliding assembly arranged on the first longitudinal sliding assembly; a sensor mounting plate is arranged on the transverse sliding assembly, the first longitudinal sliding assembly and the transverse sliding assembly are provided with a first driving mechanism and a second driving mechanism respectively, and the first driving mechanism and the second driving mechanism drive the first longitudinal sliding assembly and the transverse sliding assembly to achieve longitudinal and transverse movement of the measuring sensor.Compared with the prior art, the problems of shaking and inaccurate measurement in the measurement process of an existing measurement sensor are effectively solved, meanwhile, the defect that displacement adjustment is inaccurate is overcome, rapid response, control precision and robustness of displacement are improved, and the measurement sensor can rapidly reach a system set value.

The invention relates to a manipulator capable of achieving automatic fine adjustment. The manipulator is provided with a support and a vertical beam. A floating gripper assembly is arranged on the vertical beam. The floating gripper assembly comprises a floating gripper and a floating block. The floating block and the floating gripper are connected through a floating assembly. The floating assembly comprises an elastic body, a floating piece and a connecting plate, wherein the elastic body, the floating piece and the connecting plate are arranged in sequence. A mounting groove is formed in the floating block. A through hole corresponding to the mounting groove is formed in the connecting plate. The hole diameter of the through hole is smaller than that of the mounting groove. The floating piece is formed by a big head portion and a cylindrical portion. The biggest radial width of the big head portion is designed to be between the hole diameter of the through hole and the hole diameter of the mounting groove. The big head portion of the floating piece is located in the mounting groove. The cylindrical portion extends out of the through hole in the connecting plate and is fixedly connected with the floating gripper. A gap is formed between the cylindrical portion of the floating piece and the through hole of the connecting plate. The connecting plate is fixedly connected with the floating block. The manipulator can achieve the automatic fine adjustment through the floating gripper in order to adapt to the current position of a workpiece, can achieve mechanical automation through precision assembly, and improves production efficiency.

The invention relates to the technical field of sewage treatment, and discloses an aeration tank surface scum cleaning device for sewage treatment. The cleaning device comprises a water tank, an air cylinder is fixedly connected to the inner bottom wall of the water tank, a fixing disc is fixedly connected to the top of the air cylinder, a sleeve is connected to the outer portion of the fixing disc in a sleeving mode, and a motor is rotationally connected to the top of the sleeve. Rotating pipes are fixedly connected to the two sides of the sleeve, cavities and inner cavities are formed in the rotating pipes, first sliding rods are fixedly connected to the interiors of the cavities, floating plates are connected to the exteriors of the two first sliding rods in a sleeving mode, and hard pipes are fixedly connected to the bottoms of the two floating plates. After the position of the rotating pipes is adjusted, the floating plates float on the water surface, the hard pipes are always located below the water level under the action of the floating plates, the effect of finely adjusting the position of the hard pipes is achieved, and the situation that the hard pipes cannot suck away scum when sucking sewage due to the fact that the hard pipes are located at the too deep position above or below the water level is prevented.

The invention provides a recycling assistance device suitable for a buoy. The recycling assistance device suitable for the buoy comprises a ship body, a crane and a collection assistance device. The crane is arranged on the ship body. A first hoist frame is arranged on the crane. One end of the first hoist frame is connected with a second hoist frame in a rotating manner. A hoist rope is arrangedat one end of the second hoist frame. The collection assistance device is arranged on the hoist rope. The collection assistance device comprises a collection sleeve. Grooves are formed in the two sides of the bottom of the inner wall of the collection sleeve. According to the recycling assistance device suitable for the buoy, by arranging the collection sleeve to replace a traditional hook, the contact range between the recycling assistance device and the buoy is widened; and when the buoy is locked, due to the fact that the volume of the collection sleeve is larger than the volume of the buoy, the collection sleeve can be more easily connected to the buoy in a sleeving manner, and the problem that it is difficult to hook the buoy through the traditional hook is solved.

The invention discloses a welding technology for single-surface welding and double-surface forming. The technology comprises the following steps: (1) forming a Y-shaped groove at a weld joint; and cleaning the groove; (2) obliquely arranging a workpiece, wherein the weld joint is upward, and the arc starting end is higher than the arc ending end in welding; and (3) welding from the arc starting end to the arc ending end in a gas protecting welding manner, wherein a welding wire and the weld joint are in the same vertical plane during welding, and the welding wire is inclined relative to the weld joint, and the front end of the welding wire is close to one side of the arc starting end. According to the technology for welding, molten metal can flow along the weld joint; an operator controlsthe welding speed through the welding wire so as to control the formation quality of the weld joint, thus the molten metal is prevented from forming weld flash on the rear surface, and moreover, defects of incomplete permeating and incomplete fusion can be avoided; the quality of the weld joint is improved; the difficulty in welding is reduced; the operation is simple; and the efficiency is high.

The invention relates to the technical field of gear machining, in particular to a gear machining deburring machine. The gear machining deburring machine comprises a top frame, a first motor is fixed to the top frame, an output shaft of the first motor is connected with a mounting frame, a second motor is fixed to the mounting frame, the end of an output shaft of the second motor is connected with a driving gear, the mounting frame is fixedly connected with a plurality of sliding rods through fixing plates, the sliding rods are annularly arrayed around the driving gear, supporting plates are perpendicularly fixed to two ends of each sliding rod, a rotating shaft is rotationally connected between each two supporting plates, one end of each rotating shaft is coaxially connected with a transmission gear, the transmission gears are meshed with the driving gear, the middle of each rotating shaft is provided with a spline shaft coaxially arranged with the rotating shaft, each sliding rod is sleeved with a sliding sleeve in sliding fit with the sliding rod, a mounting plate is fixed to each sliding sleeve, and a rotating ring is rotationally mounted on each mounting plate. With the gear machining deburring machine, the working efficiency of gear deburring machining can be improved.

The invention relates to a pipeline connector sealing device, in particular to a dual sealing device for a high-pressure pipeline in an automobile engine. The dual sealing device comprises an upset head type through-connection device, a double thread connector, a locking nut, a flange plate A and a flange plate B. The upset head type through-connection device and the double thread connector are ina dual sealing connection relation after the locking nut is tightened, preliminary seal is formed through a concave hole and an upset head, secondary seal is formed between a spherical step and a protrusion, and the self-adaptation capability between matched faces is high so that the oil pipe leakage risk can be reduced. The flange plate A and the flange plate B have a locking strengthening function on the locking nut, the sealing effect between the upset head type through-connection device and the double thread connector is guaranteed, and after long-time usage, the fine adjustment functioncan be achieved; and the leakage risks after long-time usage are prevented, the flange plate A and the flange plate B can be matched with rubber gaskets, and the sealing strengthening effect is achieved at the two ends of the locking nut.

The invention discloses an assembly type limiting welding platform for machining of a large-scale welding part, and relates to the technical field of welding equipment. The assembly type limiting welding platform is characterized in that a supporting plate is arranged on the upper side of an I-shaped steel rail, wheel seats are fixedly arranged on four corners of the bottom of the supporting plate, and walking wheels are arranged inside the wheel seats in a rolling mode through axles; the upper end of a hydraulic rod is fixedly arranged on the bottom surface of a fixing frame; first sliding rails are symmetrically and fixedly arranged on the opposite surfaces of the vertical ends of the fixing frame, and a first adjusting plate is movably arranged between the first sliding rails; second sliding rails are symmetrically and fixedly arranged on the left side and the right side of the upper portion of a fixing platform, and a second adjusting plate is arranged on the upper sides of the second sliding rails; and limiting mechanisms are fixedly arranged on the upper portions of the first adjusting plate and the second adjusting plate. According to the assembly type limiting welding platform, two to-be-welded workpieces are correspondingly fixed on two adjustable platforms on the left and right, and welding joints of the two workpieces are aligned through an automatic mechanical adjusting manner, so that operation is simple, time and labor are saved, and the working efficiency is improved.

The invention discloses an opening and closing method of a manual shutter type window and relates to the field of closing devices for buildings. The opening and closing method of the manual shutter type window comprises the following steps that (1) the window comprises a rolling core, a roller shaft and a vertical rod, one end of a soft transparent plastic film is wound on the rolling core, the other end of the soft transparent plastic film is arranged on the vertical rod after winding across the roller shaft, and the window further comprises a pulling bead and a transmission mechanism which drives the rolling core and the roller shaft to move and is in linkage with the pulling bead; (2) when the window needs to be opened, the pulling bead is pulled, so that the soft transparent plastic film is rolled by the rolling core; and (3) when the window needs to be closed, the pulling bead is pulled in the opposite direction, so that the soft transparent plastic film is unfolded in the window. The opening and closing method of the manual shutter type window has the beneficial effects that compared with glass windows, the opening and closing method of the manual shutter type window has the advantages that cleaning is easy, and people are unlikely to be injured after the manual shutter type window is broken; and when the window needs to be closed, two soft transparent plastic film layers which are separated from each other are formed in the window, and a good sound insulation function and a good heat insulation function are achieved.

The invention creates and discloses a shutter type window, and relates to the field of building closing devices. The shutter type window comprises a window frame, a transparent plastic soft film, a rolling core, a roller and a vertical rod. The rolling core is arranged in the window frame in a rotatable mode. The roller is arranged on the window frame in a leftwards and rightwards slidable mode. The vertical rod is arranged in the window frame. One end of the transparent plastic soft film is wound around the rolling core, and the other end of the transparent plastic soft film is arranged on the vertical rod after being wound around the roller. The window further comprises a power mechanism for driving the rolling core and the roller to move. The transparent plastic soft film can be wound around the rolling core or unwound at a window opening under the action of the power mechanism. The shutter type window has the advantages that compared with an existing glass window, the transparent plastic soft film capable of being wound is adopted as a window sash for the window, the outer side face of the window can be easily cleaned, and the window can not hurt people when damaged; when the window is closed, two separated transparent plastic soft films are formed in the window opening, and the window has a high sound insulation function and a high thermal insulation function.

The invention provides a laser cladding device. The laser cladding device comprises a wire feeder, a jetting head and a wire feeding pipe, wherein the wire feeder and the jetting head are connected through the wire feeding pipe, and the wire feeding pipe penetrates through the jetting head from one side of the jetting head in the direction of the wire feeder and is connected with the jetting head;the portions, penetrating through the jetting head in the direction of the wire feeder, of the wire feeding pipe are provided with an upper sealing gasket and a lower sealing gasket respectively, thelower sealing gasket is arranged on a supporting base, and the upper sealing gasket is arranged on a supporting cover; the lower sealing gasket comprises a fixing portion and a wire guiding pipe through hole, a columnar through hole is taken as the fixing portion and connected with the supporting base through a bolt, the diameter of the bolt is smaller than the inner diameter of the columnar through hole, the bolt can slide in the direction of the columnar through hole, and then position adjustment of the lower sealing gasket is achieved; and the upper sealing gasket comprises a fixing portion and a wire guiding pipe through hole and is connected with a support cover through the fixing portion. Therefore, the defects that in the prior art, a wire feeding hose can be bent in the moving cladding process of a jet nozzle, wires are different in frictional resistance in the conveying process, the speed of the wires changes after the wires leave from the jet nozzle, then high cladding layershape and size precision can not be guaranteed, and wire blocking is prone to occurring if the bending radius of the hose is very small are overcome.

The application discloses an earth pressure balance shield machine. The earth pressure balance shield machine comprises a shield machine body and a thrust oil cylinder arranged on the shield machine body, wherein a cutterhead is arranged on the front portion of the shield machine body, a master driver is connected onto the cutterhead, a major spiral conveyer and a minor spiral conveyer are furtherarranged on the shield machine body, and the front ends of the major spiral conveyer and the minor spiral conveyer are respectively connected with a soil bin of the shield machine body and used for outputting slag soil in the soil bin. The earth pressure balance shield machine outputs the slag soil in the soil bin under cooperation of the minor spiral conveyer and the major spiral conveyer, achieves a good fine adjustment function for soil pressure in the soil bin through the minor spiral conveyer, and enables the soil pressure on an excavation face to accurately reach a preset soil pressurevalue, thereby effectively guaranteeing stability of the excavation face. The invention further provides an earth pressure balance shield machine control system and a control method thereof. The earthpressure balance shield machine control system and the control method thereof perform automatic control on the rotation speed of the major spiral conveyer and the minor spiral conveyer, and achieve accurate control for the slag discharge amount of the soil bin, thereby enabling the soil pressure of the excavation face to accurately reach the preset soil pressure value.

The invention relates to an inclined expanding bead threaded tube expander, which comprises an expanding shell, an expanding bead arranged in the expanding shell, and an expanding rod passing through the expanding shell, wherein the rear of the expanding bead and the middle of the expanding rod are marked with threads; the expanding bead is inclined in the expanding shell; and an included angle Arranging from 5 to 15 degrees is formed between the center line of the expanding bead and the center line of the expanding rod. When the inner and outer diameters of a tube are expanded, the expanding bead is inclined in the expanding shell and is screwed in along the expanding rod clockwise or anticlockwise, and the screw-in resistance is reduced; moreover, the threads of the expanding rod are matched with the threads of the expanding bead, so the expanding shell cannot retreat and the fine adjustment function can be realized when the inner and outer diameters of the tube are expanded.

The invention relates to a piston copper bush assembling machine which comprises a rack, an angle positioning assembly and a horizontal press-fitting mechanism; the horizontal press-fitting mechanism comprises a press-fitting floating assembly; the press-fitting floating assembly comprises a fixed seat, a floating mechanism, a clamping mechanism and a locking mechanism; the clamping mechanism can float in the horizontal direction and the vertical direction relative to the fixed seat through the floating mechanism; the locking mechanism comprises a locking driving part and a locking pin; a fixing sleeve is arranged on the fixing seat; the floating mechanism is provided with a limiting bush; the locking driving part can drive the locking pin to stretch into or retract out of the limiting bush along the fixing sleeve; the angle positioning assembly comprises a lifting mechanism and a positioning mechanism; the lifting mechanism is provided with a lifting platform and a lifting driving part; the positioning mechanism comprises a positioning seat, a horizontal driving part, a positioning rod support, an auxiliary positioning part and at least two positioning rods; the two positioning rods are horizontally fixed on the positioning rod support; and the auxiliary positioning part is provided with butt joint holes which are in butt joint with the two positioning rods. The copper bush inlaying position precision and the production efficiency can be improved.

The invention discloses an electric melting crucible kiln for flexible glass, and belongs to the technical field of melting furnaces. The electric melting crucible kiln comprises a kiln body; the kilnbody comprises a melting chamber, a clarifying chamber and a forming chamber which sequentially communicate with one another from front to back; a feeding port and an observation hole are formed in the upper end of the melting chamber; a discharging groove is formed in the lower end of the forming chamber; a temperature detection device and a heating device are arranged in each of the melting chamber, the clarifying chamber and the forming chamber, and a liquid flowing channel communicating the melting chamber with the clarifying chamber is arranged between the melting chamber and the clarifying chamber; a cooling channel is arranged above the liquid flow channel; a second thermocouple is arranged at the bottom of the liquid flow channel; an airflow isolation device is arranged between the clarifying chamber and the forming chamber. The temperature of molten glass is controllable and adjustable, conditions are created for drawing the flexible glass, the quality of the drawn flexible glass is guaranteed, resource saving is facilitated, efficient utilization of energy is achieved, and the electric melting crucible kiln has good practical value.

A frequency discriminating method for AFC circuit in diversity mode includes such steps as deleting the head data of a first frame, filling zero to frame head and tail to generate continuous frequency difference detecting pairs, cross-multiplying the input signals of cross-multiplier, sending the said detecting pairs to the frequency discriminator to obtain frequency difference, and over sampling to obtain 2x samples for output. Its advantages are simple equipment and high speed.