41results about How to "Precise control of tilt angle" patented technology

The invention discloses a centrifugal casting system for an internal combustion engine air cylinder sleeve. The centrifugal casting system comprises a centrifugal machine, a pouring device, a spraying device, a pipe drawing device and a cleaning device. The centrifugal machine comprises a mould barrel for molding the air cylinder sleeve, end covers arranged at the two ends of the mould barrel, a power device and a transmission device connected with the power device. The transmission device comprises a hollow rotary shaft, the mould barrel is coaxially sleeved with the hollow rotary shaft, the hollow rotary shaft is supported on a bearing pedestal through a bearing, the power device drives the hollow rotary shaft to rotate, and therefore the mould barrel is driven to rotate. Compared with the prior art, the centrifugal casting system has the beneficial effects that the mould barrel is circumferentially restrained on the hollow rotary shaft, throbbing of centrifugal movement of the mould barrel is reduced, the rotating precision of the mould barrel is improved, and the quality and casting efficiency of a casting are improved; and when the mould barrel rotates at a high speed, weight blocks are subjected to the action of centrifugal force to move outwards, and therefore the end covers are locked through moving rods, and molten metal is prevented from being splashed.

The invention discloses a multifunctional forklift pallet fork and a forklift. The multifunctional forklift pallet fork comprises a pallet fork mounting gantry for arranging a pallet fork body, and the pallet fork mounting gantry is rotatably connected with two telescopic shafts of a two-way oil cylinder. The two telescopic shafts synchronously move in the same direction, the two-way oil cylinderis further provided with a tilting air cylinder for driving the pallet fork mounting gantry to rotate relative to the telescopic shafts, and the tilting air cylinder is fixed to the two-way oil cylinder through an air cylinder mounting support. The extending end of a telescopic rod of the tilting air cylinder abuts against the face, back on to the pallet fork body, of the pallet fork mounting gantry. According to the multifunctional forklift pallet fork and the forklift, the pallet fork body can be driven to horizontally move through the two-way oil cylinder, meanwhile the pallet fork mountinggantry can be driven to tilt upwards through the tilting air cylinder, thus the stability of goods transportation can be ensured, and the possibility of goods falling is decreased; and the tilting angle of the pallet fork mounting gantry can be accurately controlled, the transferring requirement of different goods is met, application is more flexible, and the functions are more comprehensive.

The invention relates to a settling pond with high controllability. The settling pond comprises a main body, a rectifying plate, an adjusting mechanism and a cleaning mechanism, wherein the adjusting mechanism comprises a first supporting plate, a first motor, a first screw, a first worm wheel, a first worm, a second worm and an adjusting assembly; the adjusting assembly comprises a rotary shaft, a second worm wheel and an inclined plate; the cleaning mechanism comprises a second supporting plate, a second motor, a third worm, a third worm wheel, a fourth worm and an adjusting assembly; the cleaning assembly comprises a lead screw, a fourth worm wheel and a cleaning unit; and the cleaning unit comprises a slide block and a brush. The settling pond with high controllability is a flat flow type inclined plate settling pond, and the adjusting mechanism can precisely control the inclination angel of the inclined plate group, so that the settling efficiency of the settling pond can be relatively precisely controlled. In addition, the cleaning mechanism can eliminate sludge deposited on the inclined plate to prevent the sludge from being piled to affect the settling efficiency, so that the settling pond can be stably used for a long time.

The invention discloses a double-shaft tilting sample holder for a transmission electron microscope.The double-shaft tilting sample holder comprises a sample holder body, front-end tilting tables, driving rods, connecting rods, tilting shafts, rotary shafts, driving rod fixing shafts and a sample stage.Shaft holes are reserved in the front-end tilting tables, and the front-end tilting tables are connected with the sample holder body by the rotary shafts.The connecting rods, boss clamp grooves and driving rod clamp grooves are connected with one another by the rotary shafts.Two symmetric through movement guide grooves are formed in two sides of sample holder body front ends, the driving rods are fixed by the aid of the driving rod fixing shafts, and the constrained driving rods can be driven by a linear stepper motor at a holder body rear end to linearly reciprocate, so that the sample stage can rotate around the rotary shafts.The double-shaft tilting sample holder has the advantages that tilting angles of the sample stage can be precisely controlled by the high-precision linear stepper motor; the maximum tilting angles of the sample stage can be adjusted by the aid of included angles between bosses on the lower surfaces of the front-end tilting tables and the lengths of the movement guide grooves; the double-shaft tilting sample holder can be used with the conventional transmission electron microscope and is wide in universality.

The invention relates to an efficient, safe and highly controllable sedimentation tank, which includes a body, a rectifying plate, an adjustment mechanism and a working power supply module. The adjustment mechanism includes a first support plate, a first motor, a first worm, a first worm wheel, a second The worm and the adjustment assembly, the adjustment assembly includes the rotating shaft, the second worm wheel and the swash plate, the high-efficiency, safe and highly controllable sedimentation tank is an advection type swash plate settling tank, the adjustment mechanism can precisely control the inclination angle of the swash plate group, so as to achieve a higher Accurately control the sedimentation efficiency of the sedimentation tank. In addition, the working power module can remove the sludge deposited on the sloping plate, prevent the sludge accumulation from affecting the sedimentation efficiency, and ensure that the sedimentation tank can be used stably for a long time. In the working power circuit, the use field The high power gain of the effect tube VT2 can simplify the circuit, and at the same time can output a large enough current, which improves the practicability of the working power supply circuit and the practicability of the adopted device.

The invention relates to a test device for simulating multidirectional coupling cyclic loading of an anchor pile system. The test device comprises a model pile buried in a model box, a reaction frame,a static balance unit, a power circulation unit, a diameter guide rail, a balance weight pull wire, a horizontal loading pull wire and an oblique loading pull wire. The balance weight pull wire is connected with the power circulation unit to balance the gravity of the power circulation unit and is connected with the model pile to provide a vertical static load or an oblique static load for the model pile, the static balance unit is also connected with the model pile through a horizontal loading pull wire to provide a horizontal load for the model pile, and the power circulation unit is connected with the model pile through the oblique loading pull wire to provide circulation loads for the model pile. Compared with the prior art, the test device has the advantages of wide application range, high simulation precision, small size and the like.

The invention discloses a motor rotation and swing mechanism. The motor rotation and swing mechanism comprises an outer cylinder and an inner cylinder. The inner cylinder rotatably sleeves the outer cylinder. One end of the inner cylinder protrudes out of the outer cylinder and is equipped with a clamping device, and the other end of the inner cylinder protrudes out of the outer cylinder and is connected with a first a motor, the clamping device comprises a plurality of clamping blocks located in the inner cylinder, wherein the clamping block is driven by the cylinder to move towards the central axis of the inner cylinder, and the two sides of the outer cylinder are respectively fixedly connected with horizontally arranged rotating shafts, and the rotating shafts are respectively rotatablyinstalled on a support through bearings, and one of the rotating shafts is driven to rotate by a second motor. The motor rotation and swing mechanism can put the motor in various postures such as horizontal and inclined postures, and can continuously drive the motor to rotate so as to meet the requirements of various postures of the motor in the production process of the motor, and facilitate operation of other devices for the semi-finished motor. By adopting the gear transmission mode, the rotation speed and the inclined angle of the motor can be accurately controlled, and the postures of the motor can be accurately positioned.

The invention discloses a manufacturing method based on control over an angle of a contact hole wall of a liquid crystal display device, which comprises the following steps of: (1) coating photoresist to a substrate to form a photoresist layer; (2) exposing the photoresist layer by using a photo-hardening monomer with a preset pattern; and (3) developing the treated photoresist layer by using a developing agent, and controlling developing time, developing temperature and the concentration of the developing agent to obtain a contact hole with preset angle. By using the melting point characteristic of the photoresist material including the photo-hardening monomer, the inclined angle of the contact hole wall is accurately controlled between 45 DEG and 70 DEG.

The invention discloses a drilling angle adjusting device. The drilling angle adjusting device comprises an upper adjusting ring, a support, a lower positioning ring, a chassis and supporting legs, wherein the upper adjusting ring comprises an upper ring body and an upper sliding sleeve; the upper ring body is arranged on the upper sliding sleeve in a sleeving manner and is connected with the upper sliding sleeve; the support comprises a positioning rod and an adjusting rod; the top of the positioning rod is rotationally connected with the upper ring body; the bottom of the positioning rod isfixedly connected with the chassis; two ends of the adjusting rod are respectively hinged to the upper ring body and the chassis; the length of the adjusting can be adjusted; vertical projections of the positioning rod and the adjusting rod respectively extend in the front-back direction and the left-right direction; the lower positioning ring comprises an annular body and a lower sliding sleeve;the front end and the rear end of the lower sliding sleeve are connected with a shaft hole of the annular body; a left angle staff and a right angle staff which are in sliding connection with the chassis are respectively and fixedly connected to the left end and the right end of the annular body; the inner diameter of the lower sliding sleeve is identical with that of the upper sliding sleeve; andthe tops of the supporting legs are fixedly connected with the bottom of the chassis. When the drilling angle of a drilling bit is adjusted, the inclination angle of the drill bit can be accurately adjusted and the convenience in operation is realized.

The invention relates to a construction method of a large-span cast-in-place special-shaped stair. According to the scheme, the construction method comprises the steps that S100, construction preparation is conducted; s200, an adjustable formwork support is erected; s300, a lower layer formwork is erected; s400, a stair reinforcement cage is hoisted and placed; s500, a step side formwork is erected; s600, stair concrete construction is carried out; and S700, stair step plate installation is carried out. The construction method has the advantages that the construction quality of the large-span cast-in-place special-shaped stairs is improved, the construction difficulty is reduced, and the construction efficiency is improved.

The invention discloses a mold device for a bicycle hub. The mold device comprises a base. A supporting column is fixedly mounted on one side of the top end of the base, a feeding device is fixedly mounted at the top end of the supporting column and comprises a fixing frame, a driving motor, a first lead screw and a mounting block. The driving motor is fixedly mounted on one side of the outer wall of the fixing frame, and the first lead screw is fixedly connected to one side of an output shaft of the driving motor. Sliding grooves are formed in the two sides of the inner wall of the fixing frame, the mounting block is mounted on one sides of the sliding grooves in a sliding manner, the first lead screw penetrates through one side of the mounting block, a plurality of balls are arranged on the contact portions of the mounting block and second lead screws, a feeding barrel is arranged on one side of the mounting block, and a hub mold frame is arranged at the bottom of the side, away from the driving motor, of the mounting block. The mold device for the bicycle hub has the advantages of being simple in structure, low in cost, high in efficiency and high in automation degree, and can effectively solve the problems in the background technology.

The invention belongs to the technical field of mechanical hoisting, and particularly relates to an automatic adjusting hoisting device for a commercial vehicle. The device comprises a fixed device, amovable device and a control device, wherein the fixed device is movably connected with the movable device, and the control device and the movable device are fixed. The automatic adjusting hoisting device for the commercial vehicle is simple in structure, the hoisting inclination angle can be accurately controlled by controlling a remote controller and combining with reading displayed by an electronic angle displayer, so that the hoisting technical requirements of different inclination angles of all assemblies are met, potential safety hazards are eliminated, the hoisting inclination angle control problem is solved, the assembling efficiency is improved, the labor intensity is reduced, and the potential safety hazards are eliminated.

The invention relates to a profile support system used for the rework operation of a door and window frame of a vehicle. The profile support system comprises a rework machine base, a rework table arranged on the rework machine base and one end of which is hinged with the rework machine base through a hinge shaft, and a rework table arranged on the rework machine base. An angle sensor on one side of the rework table, a telescopic hydraulic cylinder arranged in the rework machine base and drivingly connected with the rework table, an electrical control box electrically connected with the telescopic hydraulic cylinder and the angle sensor respectively, and a profile arranged on the rework table The support block, driven by the telescopic hydraulic cylinder, is arranged on the rework stand so that the rework table can reciprocate around the hinge shaft. Compared with the prior art, the overall structure of the present invention is simple, compact, economical and practical, can be automatically controlled, can effectively ensure that the door and window frame parts of the vehicle and the arched hollows of the rework table are effectively supported, and solve the problem of stress on the door and window frame parts of the vehicle. The technical problem of poor flatness caused by deformation is widely used, easy to operate, safe and reliable.

The invention relates to the technical field of railway vehicle rim lubricating equipment, and particularly discloses an angle-variable rim lubricating device which comprises an oil sprayer and a fixing support, the oil sprayer is connected with a bogie frame of a railway vehicle through the fixing support, and the oil sprayer comprises a nozzle, a universal rotating device, a filtering device and an oil sprayer oil conveying pipe. The nozzle, the universal rotating device, the filtering device and the oil sprayer oil conveying pipe are sequentially connected and internally communicated, the universal rotating device is connected with the filtering device through a universal rotating structure, and a filter screen is arranged in the filtering device. The inclination angle of the nozzle can be accurately controlled, the relative position between the nozzle and the rim can be strictly controlled, the filter screen is arranged in the oil sprayer, oil-gas mixtures can be filtered, the quality of lubricating grease sprayed to the rim is improved, the corrosion effect of impurities on the rim is reduced, and meanwhile the device is simple in overall structure, easy to disassemble and assemble, and convenient to remove impurities.

The invention discloses a steam turbine girdle gasket dedicated bench snips which comprise a base, a workbench support, a workbench, a cutting board, a connection rod and a handle. The workbench is connected with the workbench support, the workbench is provided with a limit plate and a graduated disc, the workbench is connected with the limit plate through studs, flat washers and butterfly nuts, the workbench adjusts the relative position of the workbench and the limit plate through the studs, the flat washers and the butterfly nuts, the base is provided with a limit block, and the workbench support is connected with the base through screws. One ends of the cutting board and the connection rod are connected with the base, and the other ends of the cutting board and the connection rod are fixedly connected with the handle. The steam turbine girdle gasket dedicated bench snips are simple in structure, and convenient to operate, reduce the working strength of operation staff, save working space, improve process efficiency, and is suitable for the accurate and mass production of steam turbine girdle gaskets with diversified boundary dimensions.

The invention relates to a shutter structure, in particular to a shutter structure for a pen. The shutter structure comprises an outer rod, a shutter and a writing main body, the shutter is arranged in the outer rod and is hinged and matched with the outer rod; an ejection part is arranged on the writing main body, magnetic attraction ends are arranged on the ejection part and the shutter, and the magnetic attraction ends are magnetically attracted with each other; when the core is collected, the writing main body is located in a sealed cavity formed by the outer rod and the shutter, and the shutter is influenced by the magnetic attraction ends and keeps an inward normal state, so that the shutter and the outer rod are kept in a sealed relation; when the core is discharged, the ejection part pushes the shutter open, and the shutter is turned downwards, so that the writing main body is conveniently exposed out of the outer rod; and by further excavating the structure relation of the shutter and accurately controlling the inclination angle of the shutter, the installation cost and complexity are reduced to the maximum extent, and meanwhile the sealing effect and the requirements for the magnetic attraction ends and the reset piece can be improved.

The invention relates to a basin-type insulator surface coating curing device. The basin-type insulator surface coating curing device comprises a frame body, a drying oven, a rotating frame, a workpiece fixing disc and a power rod, the frame body is provided with a supporting platform, and the supporting platform is provided with a through hole; the drying oven is arranged on the supporting platform and communicate with the through hole; the rotating frame is driven by a driving device to rotate, a hinge part is arranged on the rotating frame, and the hinge part penetrates out of the through hole; the workpiece fixing disc is located in the drying oven and used for fixing a basin-type insulator, the workpiece fixing disc is hinged to the hinge part through a universal joint, and one side of the workpiece fixing disc is supported on the upper surface of the supporting platform so that the workpiece fixing disc can be obliquely arranged at a set angle; and one end of the power rod is connected to the rotating frame, and the other end of the power rod drives the workpiece fixing disc to move together when the power rod moves along with the rotating frame. Therefore, the flowing and accumulation of the coating on the concave surface of the basin-type insulator are weakened, the uniformity of the coating on the concave surface of the basin-type insulator is ensured, and the insulating property of the basin-type insulator is improved.

The invention belongs to the technical field of magnetofluid generators, and discloses a sharkskin-imitating 3D printing magnetofluid droplet generator and a preparation method. A sharkskin model is designed, and a sharkskin-imitating 3D printing device is prepared through a photocuring printing technology; the surface of the prepared 3D printing device is washed with ethyl alcohol and dried; hydrophilic treatment is carried out on the cleaned sample, and cooling is conducted to obtain a sharkskin surface; a copper coil and an Nd2Fe14B magnetic block are integrated into the 3D printing device in sequence, the bottom is sealed through Ecoflex, and the sharkskin-imitating 3D printing magnetofluid droplet generator is obtained; and the four same 3D printing magnetofluid droplet generators are connected in series, and a Zigzag stepped magnetofluid nano generator is obtained. The surface of a magnetofluid generator is based on the low adhesion and resistance reduction capacity of a sharkskin structure, the adhesion force and sliding resistance of magnetofluid droplets on the solid surface can be reduced, and the power generation efficiency of the magnetofluid generator is improved.