96results about How to "Small volume and mass" patented technology

The invention comprises a securing frame, a chip placement head and chip placement module and a vacuum module. Said securing frame is a dustpan-like frame composed of a main frame and a slave frame; the chip placement module is a cuboid; the vacuum module is located above the securing frame; based on the securing frame, the chip placement module and vacuum module are secured on the securing frame; during operation, in each moment only one surface-mounted component acts; each surface-mounted component acts sequentially; the vacuum system fits the hollow axle action to control the vacuum source to generate or destroy the press control in order to absorbing or place the chip by the hollow axle.

The invention relates to a permanent-magnetic retarder. The structure of the retarder comprises a stator, a rotor and a control mechanism. The rotor consists of a plurality of permanent magnets and a magnet retainer, and can be rotationally arranged in the stator. The control mechanism is positioned inside the rotor and used for operating and controlling the braking state. The permanent-magnetic retarder is arranged between an automobile clutch and a gear box, and the braking effect of the retarder on an automobile is enhanced through the speed reducing function (namely torque amplification) of the gear box; the stator of the permanent-magnetic retarder is arranged on the outer side of the rotor, and a rotating part is arranged inside the rotor, so the permanent-magnetic retarder is safer compared with the prior permanent-magnetic retarder or the current vortex retarder; the stator of the permanent-magnetic retarder is provided with a liquid cooling device so that the heat dissipation effect is good, and the brake torque does not decline when the permanent-magnetic retarder works for a long time; the control mechanism of the permanent-magnetic retarder adopts the prior frictional plate type, so the shift of the braking state can be easily realized, and no magnetic leakage torque is generated in the non-braking period; and the permanent-magnetic retarder has the advantages of compact integral structure and small volume and mass.

The invention provides a multi-degree-of-freedom self-sensing precise pointing and vibration isolating integrated platform and a combined device. The multi-degree-of-freedom self-sensing precise pointing and vibration isolating integrated platform comprises load discharging devices (1), drive supporting rods (2), connection bases (3), an upper platform (4), locking devices (5), positioning supporting tools (6) and a lower platform (7), wherein the load discharging devices (1) are connected with the upper platform (4) and separated from the lower platform (7); the connection bases (3) in fastened connection with the upper platform (4) are connected with the connection bases (3) in fastened connection with the lower platform (7) through the drive supporting rods (2); the locking devices (5)are connected between the upper platform (4) and the lower platform (7); the positioning supporting tools (6) are arranged on the lower platform (7); and the drive supporting rods (2) are obliquely embedded in semi-arc grooves of supporting edges of the positioning supporting tools (6). The multi-degree-of-freedom self-sensing precise pointing and vibration isolating integrated platform integratesintelligent sensing and has the characteristics of achieving multi-degree-of-freedom precise positioning, integrating active vibration isolating and passive vibration isolating, achieving safe locking, being convenient to assemble and high in bearing capacity, and the like.

A welding fixture for a ring on the bottom of a carrier rocket propellent tank comprises an installation base and multiple groups of combined clamp assemblies and is characterized in that the combined clamp assemblies are installed on the installation base and can move along the radial direction of the installation base; each combined clamp assembly comprises a back face rigid supporting component and a front face compacting component; an installation interface is disposed on the rigid supporting component; and the front face compacting component is connected to the rigid supporting component by the interface. The welding fixture provided by the invention has the advantages that the technical problems of high fixture manufacture cost in existing assembly and complex assembly processes are solved; a fixture structure is simplified; production and manufacture efficiency is increased; and a fixture utilization rate is increased.

The invention provides a dual-rotor flux-switching permanent-magnet motor and belongs to the technical field of electric motors. The dual-rotor flux-switching permanent-magnet motor comprises a stator, an inner rotor and an outer rotor, wherein the stator is formed by connecting a plurality of stator modules, each stator module is composed of a stator iron core tooth (1), a permanent magnet (2) and an armature winding (3), the inner rotor (4) and the outer rotor (5) are located on the inner circle and the outer circle of the stator respectively, and independent air gaps are formed between the inner and outer rotors and the stator respectively. With the change of relative positions of the stator and the rotors, paths of flux emitted by the permanent magnets are switched continuously, and when the flux of a winding linkage is maximum, the paths of the flux are emitted by the permanent magnets and closed by the inner and outer air gaps, the inner and outer rotors and the stator iron core teeth. According to the motor, the defects that traditional flux-switching permanent-magnet motors are serious in flux leakage of outer circles of stators and low in utilization ratio of permanent magnets are overcome, and the torque and the power density of the motor can be improved.

The invention provides a saline-alkali soil improving matrix and a preparation method thereof. The improving matrix is prepared from, by weight, 80-100 parts of wood processing waste, 40-50 parts of duck manure, 2-5 parts of monoammonium phosphate, 25-35 parts of calcium phosphate, 15-25 parts of flue gas desulfurization gypsum, 20-30 parts of vermiculite, 10-20 parts of perlite, 30-40 parts of furnace ash and slag, 120-130 parts of hydrolytic polymaleic anhydride and 1-2 parts of yeast. The saline-alkali soil improving matrix solves the problem that wood processing waste, flue gas desulfurization gypsum and furnace ash and slag cause environment pollution. Water-logged compost fermentation is conducted on the wood processing waste and duck manure by means of a microorganism fermentation agent. Physical and chemical properties of saline-alkali soil and soil microorganism living environments are improved by means of the organic matrix, a series of problems such as deterioration of physical and chemical properties of soil, nutrient unbalance, soil physical structural damage, acidification, hardening, release of toxic substances and the like caused by blindly applying an excessive amount of fertilizer are avoided, good economic benefits can be obtained, and unnecessary loss is avoided.

The invention relates to the technical field of robots or mechanical arms, in particular to a small multifunctional tail end operational tool assembly of a mechanical arm. The tail end operational tool assembly of the mechanical arm comprises a tail end operational tool and adapters, wherein the tail end operational tool comprises a shell, an end cover, a plurality of guide blocks, grabbing fingers, ball screws and a driving mechanism, the end cover is connected to one end of the shell, the guide blocks are connected to the end cover, the ball screws are arranged in the shell and are connected with the grabbing fingers through lead screw nut components, the ball screws can drive the grabbing fingers to move, the driving mechanism can drive the ball screws to rotate, and the adapters are matched with the guide blocks and the grabbing fingers. Compared with the prior art, the tail end operational tool assembly of the mechanical arm has the advantages that capturing, locking and unlocking of the two different adapters can be achieved with the single driving mechanism, the overall structure is simple and compact, the size is small, and the weight is small.

The invention provides a collimator device capable of automatically adjusting the gamma ray flux and a measuring system. A collimation window is formed in the front section of a collimator outer shielding body, a through hole is formed in the rear section of the collimator outer shielding body, a detector penetrates through the through hole for connection, and gamma rays can enter the detector from the collimation window. A servo motor and a speed-changing gear box are connected with a lead screw through a gear assembly connecting rod and a gear assembly; two guide rails are inclined inwards along the collimation window and are symmetrically arranged on the two sides by taking the detector as the center; the servo motor is controlled to drive the lead screw, then a collimation opening shielding sliding block is driven by a shielding block sliding connecting rod, the position of the collimation opening shielding sliding block is adjusted, the size of the collimation window is changed, and the adjusting function of the gamma ray flux is realized. The device can automatically adjust the flux of the gamma rays, with the sensitive volume, entering the detector according to the initial measurement value, has a similar adjusting function for low-energy rays to high-energy rays, and is easy to operate, compact in structure and suitable for nuclear power plants and nuclear technology application radioactive waste detection systems.

The present invention relates to an anti-blocking controllable positive-displacement grooved wheel distributing valve. It can be extensively used in the fields of chemical industry, pharmaceutical industry and grain processing industry, etc. for conveying two kinds or more than two kinds of granules materials or power materials according to a certain mixing ratio. It includes the following several portions: two material tanks, two grooved wheels, end covers, material outlet, observation window and scraper, etc. Said invention also provides the connection mode of all the above-mentioned portions, and also provides the working principle of said anti-blocking controllable positive-displacement grooved wheel distributing valve and its concrete operation method.

The invention provides a unit motor modular consequent pole permanent magnet synchronous linear motor and belongs to the motor technical field. The unit motor modular consequent pole permanent magnet synchronous linear motor is composed of a plurality of unit motors; each unit motor includes a primary assembly and a secondary assembly; the primary assembly is composed of a primary iron core and an armature winding, wherein the primary iron core is slotted, and the armature winding is arranged in the slots of the primary iron core; the secondary assembly is composed of permanent magnets, iron poles and a yoke plate, wherein the iron poles and yoke plate are integrally modeled; an air gap is left between the primary assembly and the secondary assembly; a magnetic adjusting structure is arranged between two adjacent unit motors; the width of the magnetic adjusting structure can be expressed as an equation that S=(k+2/3)tau, wherein k is an integer, and tau is the pole pitch of the motors; and the arrangement sequences of the windings in the slots of the two adjacent motor units are different. With the structure adopted, the suppression of an end portion effect can be benefitted, the asymmetry of the three-phase windings of the permanent magnet synchronous linear motor can be improved, and thrust ripples can be decreased.

The invention discloses a spectacle case realizing automatic cleaning for lenses. The spectacle case comprises a spectacle case body, a storing cavity with an upward opening is arranged in the spectacle case body, a box cover capable of closing the storing cavity is arranged at the upper side of the spectacle case body, two cleaning mechanisms are arranged on each of the lower end face of the boxcover and the left end face of the storing cavity, the cleaning mechanism comprises a fixing block, a liquid storing cavity for storing cleaning liquid is arranged in the fixing block, and a sliding cavity with the side end wall communicating with the storing cavity is arranged in the fixing block. The device is simple in structure, and convenient and rapid to operate, the cleaning for the lensesof spectacles can be automatically completed, meanwhile, the operation is completed without using abundant cleaning liquid, so that the volume mass of the spectacle case is reduced, moreover, throughan elastic sealing ring, the sealing for the spectacle case is tighter, so that the phenomenon that dust enters the spectacle case, consequently, the use of the spectacles is influenced is prevented,in addition, through locking protection for the spectacle case, the safety of the spectacles in the spectacle case can be better alarmed, and thus the use range of the spectacle case is expanded.

The invention belongs to the technical field of liquid transfer, and relates to an automatic liquid transfer device, which mainly solves the problem of miniaturization of a motor-driven liquid transfer device. The automatic liquid transfer device is characterized in that a motor driving mechanism and a liquid transfer gun inner tube jointly form a liquid transfer gun tube module, the module can realize the independent control of a liquid transfer gun tube and the synchronous control of a plurality of gun tubes, and in addition, the operation of assembling and disassembling a gun head can be independently finished. The module is connected with an injector through a slim tube, and during liquid transfer operation, the injector does not need to be moved, and only the liquid transfer gun tube module needs to be controlled to move through the Z axis of the XYZ three-axis platform or a mechanical arm. The problem that a liquid transfer gun barrel in a small multi-channel liquid transfer device cannot be independently controlled can be solved, and the device has important significance in application of the multi-channel liquid transfer device in a complex and narrow environment.

A general method of cooling and maintaining the uniform temperature of an extended structure is provided with specific application discussed of keeping a superconducting coil at cryogenic temperatures in the presence of external heat loads that may be variable in space and time. The approach embeds the structure to be cooled (208) into the vapor space (108) of a heat pipe assembly (202), which consists of an outer wall (116), a fluid wicking mechanism (110, 114), thermal insulation (118) and a mechanism for heat extraction, such as the cold tip (206) of a cryocooler (204).

The invention discloses a surgical instrument for a minimally invasive surgical robot, and the surgical instrument comprises a tail gripper arm part which comprises a left gripper arm and a right gripper arm, and the left gripper arm and the right gripper arm can be opened or closed relatively; a horizontal rotation adjusting mechanism which is used for driving the tail gripper arm part to rotate in the horizontal plane; a pitching adjusting mechanism which is used for driving the tail gripper arm part to overturn upwards or downwards; a connecting pipe part is connected with the tail gripper arm part, and the connecting pipe part is used for driving the tail gripper arm part to rotate around the axis of the connecting pipe part; and a driving interface part is respectively connected with the horizontal rotation adjusting mechanism, the pitching adjusting mechanism and the connecting pipe part, and the driving interface part is used for driving the horizontal rotation adjusting mechanism, the pitching adjusting mechanism and the connecting pipe part to operate. The surgical instrument is high in rigidity and small in size and mass, meanwhile, wiring simplification and light weight are achieved, and the accuracy and reliability of surgical instruments in the minimally invasive environment are guaranteed.

The invention provides microbial fertilizer for soil improvement and remediation, which is prepared from the following raw materials in parts by weight: 65 to 75 parts of charcoal, 10 to 14 parts of potassium chloride, 4 to 6 parts of polypropylene peptide amine, 6 to 10 parts of compound microbial agent, 0.5 to 1.5 parts of lignin iron, and 3 to 5 parts of attapulgite. According to the microbialfertilizer for soil improvement and remediation, which is provided by the invention, the charcoal is used as the main raw material and is matched with a certain amounts of potassium chloride, polypropylene peptide amine and compound microbial agent, so that rich organic matter and elements of nitrogen, phosphorus and potassium can be provided for soil, soil hardening and aggregating phenomena areeffectively improved, and air permeability and the water-retaining property of the soil are enhanced; by the lignin iron and the attapulgite, an iron shortage phenomenon of the soil is improved and deleteriousness of the soil is reduced, so that comprehensive performance of the soil is greatly improved, fertility of the soil is improved, and yield of crops is reinforced.