51results about How to "Shorten working distance" patented technology

An object of this invention is to make it easy to adjust a position of the energy beam to irradiate and a position of a focal point of a light collecting mirror part, and to prevent displacement of the light collecting part due to vibration with a simple arrangement. A sample measuring device in accordance with this invention is to measure light generated from a sample W by irradiating electron beams EB on the sample W, and comprises a electron optical column part 23 that converges the electron beams EB, and a light collecting mirror part 31 that is arranged between the electron optical column part 23 and the sample W and that has an energy beam path 312 to pass the electron beams EB converged by the electron optical column part 23 and to irradiate the electron beams EB on the sample W and a mirror face 311 whose focal point F is set on an axis of the energy beam path 312 and that collects the light L generated from the sample W by means of the mirror face 311, wherein the light collecting mirror part 31 is supported by the electron optical column part 23 so that the axis of the electron beams EB coincides with the focal point F.

A method and system are presented for controlling inspection of a sample with a charged particle beam. A certain given voltage is supplied to an anode of the column to provide a required accelerating voltage for a charged particle beam. A certain negative voltage is supplied to the sample selected so as to provide a desirably high effective voltage of the column at said given voltage of the anode. A certain voltage is supplied an electrode of a lens arrangement located closer to the sample, this voltage being selected to satisfy one of the following conditions: the electrode voltage is either equal to or slightly lower than that of the sample; and the electrode voltage is significantly higher than that of the sample.

The invention discloses a medical clamping device which comprises a rotating shaft. A group of arc-shaped jaws which are arranged oppositely are connected to the rotating shaft, hoses a are fixedly connected to the two ends of the rotating shaft respectively, the hoses a are connected with each other through a steel ring a, a close structure is formed by the hoses a, the steel ring a and the rotating shaft, and a sensor is arranged on the outer wall of each jaw; a through hole is formed in the radial direction of the rotating shaft and located in the center of the axial direction of the rotating shaft, and the group of jaws are symmetrically arranged in the center of the axial direction of the rotating shaft; a telescopic structure is further arranged between the group of jaws. According to the medical clamping device, by means of the sensors arranged on the inner walls of the jaws, foreign bodies in vivo can be found rapidly; due to the fact that teeth, springs, steel wire ropes and hoses b arranged on the inner wall of the jaws are used in a matched mode, on one hand, the degree of opening and closing between the jaws can be adjusted rapidly, and the speed of clamping the foreign bodies is increased; on the other hand, the hoses b can extend or shorten the working distance and shorten the rescue time, the pain of a human or animal body is reduced, and the good use value is achieved.

The invention relates to a portable fully-integrated DNA on-site inspection minitype total-analysis system detection light path. The portable fully-integrated DNA on-site inspection minitype total-analysis system detection light path is characterized by comprising an exciting light focusing system, a micro-fluidic electrophoresis chip, a fluorescence collecting, focusing and conducting system as well as a fluorescence splitting and detection system. The portable fully-integrated DNA on-site inspection minitype total-analysis system detection light path can divide wide-wavelength fluorescence into a plurality of colored tapes; and besides, a focusing mirror in a wavelength division multiplexer can focus fluorescence beams into micron-order light spots, and is suitable for a low-noise detector and a detector with high noise caused by large sensitive surface. The portable fully-integrated DNA on-site inspection minitype total-analysis system detection light path has a light path structurewhich is provided with a plurality of fluorescence channels, is high in flux and high in flexibility and is simple in process adjustment and low in cost, realizes modular independence, is simple in process adjustment, high in stability and high in extensible degree of electrophoresis channels and fluorescence channels, and can be widely applied in the fields of DNA detection, on-site detection, capillary electrophoresis detection and the like.

The invention relates to a microscopic welding micro-tensile measuring instrument, which comprises a base, a support column arranged on the base, a frame arranged on the top of the support column, a workpiece chuck capable of moving up and down relative to the frame and a workbench which is arranged on the base and corresponds to the workpiece chuck, wherein a tension conducting structure with a pull rod is arranged in the frame; the pull rod extends out of the bottom of the frame and is fixed with the workpiece chuck; and a tension sensor is arranged inside the workpiece chuck, and is electrically connected with a tension display device. In the microscopic welding micro-tensile measuring instrument, the new photoelectric technology and mechanical technology of the tension sensor are combined, so that the tension sensor becomes a new measuring instrument which combines optics, mechanics and electronics; and the tension sensor is arranged on the workpiece chuck, so that the friction and various resistances which are caused by driving the workpiece chuck to move up and down are prevented, the measuring accuracy of tension is improved, and the measurement on the tension of small workpieces is realized.

The invention discloses a corn harvester header, and relates to the technical field of corn combine harvesters. The corn harvester header comprises a header frame, more than two groups of ear picking devices are equidistantly arranged on a main plane of the header frame, the head of each ear picking device is connected with a feeding device through a spline, the ear picking devices are connected through a universal coupling with a spider, and a suspension cutting device is arranged below the front of the ear picking devices. The corn harvester header can realize feeding, ear picking and crushing functions and is simple in structure, reasonable in arrangement, small in overall size, convenient and fast in harvesting, fine in effect and wide in application range, and various portions are compact.

The invention belongs to the bioanalysis technical field, and relates to a rotational scanning capillary array analyzer. The analyzer comprises a laser light source, a scanning reflector, a scanning objective, a detection window fixing device, a capillary sampling end, a capillary exhaust liquid end, a light beam steering system, a fluorescence spectroscope, a fluorescence color filter, an optical detector and a scanning central shaft, wherein, a plurality of capillaries are arranged around the scanning central shaft to form a cylindrical array, and the capillary array is fixedly arranged in the detection window fixing device; laser beam of the light source sequentially passes through the fluorescence spectroscope, the scanning reflector, the light beam steering system and the scanning objective, and the scanning objective converges the laser beam on the detection window; a biological sample marked with fluorescence in the capillary is activated by the laser, irradiated fluorescence passes through the scanning objective, the light beam steering system, the fluorescence spectroscope and the fluorescence color filter, and is detected by the optical detector. The rotational scanning capillary array analyzer has the advantages of high flux, high sensitivity, large fluorescence collection angle and good performance.

The invention discloses a scanning electron microscope system. The scanning electron microscope system comprises an electromagnetic cross field analyzer, a compound objective lens composed of an electric lens and a magnetic lens, a mirror rear deflection device and a sample table, wherein the electromagnetic cross field analyzer is located between an upper pole shoe of the magnetic lens and an electron source which generates an initial electron beam that is incident to the scanning electron microscope system, and is used for enabling the incident initial electron beam with the first energy tomove along the optical axis, and enabling the initial electron beam with the second energy to be deflected to the two sides of the optical axis of the initial electron beam; the compound objective lens is used for converging the initial electron beam acted by the electromagnetic cross field analyzer so as to form a converged electron beam; and the mirror rear deflection device is positioned in a lower pole shoe hole of the magnetic lens and is used for changing the movement direction of the converged electron beam, so that the converged electron beam is obliquely incident to a to-be-tested sample on the sample table. The invention further discloses a sample detection method.

The invention discloses a self-controlled pneumatic lift truck arranged at the bottom of an iron frame. The self-controlled pneumatic lift truck is characterized in that a vertical fixing mechanism, a double-fork type balance mechanism, a pneumatic mechanism, a pneumatic lift mechanism, a pneumatic control mechanism, and foot wheels are included, non-pollution transportability of compressed air is used as rising kinetic energy, a throttling valve and a pedal self-locked reversing valve are used for controlling the inlet and outlet flow of the compressed air so as to automatically control and adjust the height of a lifting table, a pedal valve with a lock can be used for supplement and correct the height of the lifting table when the lifting speed or the descending speed does not conform to operation beats, and the needed height is made to be in a proper position. The self-controlled pneumatic lift truck brings convenience to turnover, eliminates bowing and kowtow motion of operation workers, and reduces the labor intensity of workers with low investment, and fills the blank in lift trucks.

To provide an apparatus that can prevent an objective lens from colliding against a member of a disk drive, can get disk loading/unloading operations done quickly and can establish a focus controlled state swiftly. An information processing apparatus includes: a converging section for converging light; a shifting section for shifting the focus of the light by moving the converging section perpendicularly to an information storage layer of a storage medium responsive to a drive signal; a position control section for generating a position control signal to move the converging section at variable velocities; a focus control section for generating a focus control signal based on a light amount signal representing reflected light such that the focus is located in a focus controllable range; a switching section for selectively outputting the position control or focus control signal; and a driving section for outputting a drive signal responsive to the output signal. The switching section outputs the position control signal to shift the focus to the focus controllable range and the focus control signal.

The invention discloses a method for realizing the light beam reshaping of a striped array semiconductor laser by an oblique square prism pile, which is characterized in that (1) the parameters and parallel plates of the systems of the front group or the rear group of the oblique square prism pile are determined according to the requirements of luminous spot folding; (2) the oblique square prism and the parallel plates needed are processed by the optical flat parts processing technology and then bonded to form an overall reshaping component; (3) the bonded oblique square prism pile is placed in quasi-parallel light which is collimated by a fast axis and a slow axis of the striped array semiconductor laser respectively; the luminous spot is rotates from left to right around a perpendicular of a base of the laser to lead the deflected luminous spot to align with the direction of the fast axis; (4) the emergent luminous spot after the reshaping emerges along the direction in parallel to an optical axis; a focusing lens is added at a proper position of the emergent light and a reshaped light beam is coupled into an optical fiber. Compared with the traditional method, the method for realizing the light beam reshaping of the striped array semiconductor laser by the oblique square prism pile of the invention has the advantages of simple design, compact structure, convenient adjustment, low cost, etc.

The invention discloses a novel cubic combination hydraulic machine, which comprises six hinge beam, namely an upper hinge beam, a lower hinge beam, a front hinge beam, a rear hinge beam, a left hinge beam and a right hinge beam arranged in a space symmetry way, wherein the upper hinge beam and the lower hinge beam are provided with four groups of longitudinal connecting lugs in front, rear, left and right directions; the front hinge beam, the rear hinge beam, the left hinge beam and the right hinge beam are provided with two groups of longitudinal connecting lugs in upper and lower directions; the connecting lugs of the upper hinge beam and the lower hinge beam are hinged with those of the front hinge beam, the rear hinge beam, the left hinge beam and the right hinge beam; each group of connecting lugs of the upper hinge beam and the lower hinge beam comprises three connecting lugs; and each group of connecting lugs of the front hinge beam, the rear hinge beam, the left hinge beam and the right hinge beam comprises four connecting lugs. According to the novel cubic combination hydraulic machine, two groups of horizontal connecting lugs are cancelled in the connecting structures of the front hinge beam, the rear hinge beam, the left hinge beam and the right hinge beam, working 'windows' between the longitudinal connecting lugs are expanded, the working distance of material loading or top hammer exchanging is shortened, the man-machine coordination disorder after enlargement of the cubic hydraulic machine is eliminated, and more conveniences are provided for overhaul and maintenance.

The invention discloses a flat insertion type electronic probe, and relates to the technical field of electron microscopic imaging technology and metal material crystallography characterization. The flat insertion type electronic probe has higher spatial resolution, supports large-range movement of a sample, and can directly obtain a back scattering electron image and improve applicability of a large-size sample and the convenience of combined use with an ECCI technology; According to the specific scheme, the flat insertion type electronic probe comprises an electron gun, a transmission channel, a sample chamber, a signal reading device and a signal receiving device; the electron gun is used for emitting electron beams, the electron beams enter the sample chamber through the transmission channel, a sample table is arranged in the sample chamber, the sample table is used for containing samples, the electron beam irradiates a sample and carries out backscattering, the signal reading device is used for receiving the electron beam backscattered by the sample stage, the signal reading device is a CCD camera, and the CCD camera is in data connection with the signal receiving device. Theflat insertion type electronic probe provided by the invention is high in spatial resolution, and the working distance of the direct insertion type EBSD probe is smaller.

The invention relates to the technical field of cheese drying machines, and discloses a cheese drying machine. A machine body is included. The inner bottom wall of the machine body is movably connected with first sliding wheels. A bottom plate is fixedly connected to the tops of the first sliding wheels. The front face of the bottom plate is fixedly connected with a pull rod. The inner bottom wallof the bottom plate is fixedly connected with a rotation rod through a bearing. The top of the rotation rod is fixedly connected with a rotation block. The right side of the rotation block is engagedwith a gear. The bottom of the gear is fixedly connected with a first motor through an output shaft. A rotation disc is fixedly connected to the top of the rotation block. According to the cheese drying machine, through cooperative usage of the first motor and the rotation disc, the first motor is started and drives the gear to rotate, the gear drives the rotation block to rotate, the rotation block drives the rotation disc and the rotation rod to rotate, the rotation rod drives fixing rods and moving rods to rotate, cheese sleeving the fixing rods rotates together, various faces of the cheese can be blown by hot air during drying, and accordingly the effects that rotation is achieved, and the drying efficiency is improved are achieved.

The invention relates to an automatic full-process crawler-type honey harvesting machine and a control method thereof. The machine comprises a crawler-type walking mechanism (2), and mechanical arms and a honey extraction device (3) are arranged on a deck (1) of the crawler-type walking mechanism (2) from front to back in sequence; the honey extracting device (3) comprises a centrifugal cylinder (16) connected with a material outlet pipe (17), and an inner frame (14) which rotates through a central shaft (15) is connected into the centrifugal cylinder (16). The automatic full-process crawler-type honey harvesting machine can achieve full-automatic honey harvesting through mechanical operation and is high in working efficiency.

The invention discloses a steel belt fixing mechanism for a bundling machine. The steel belt fixing mechanism comprises a hand wheel, a steel belt mounting module and a plurality of connecting rod tensioning modules, wherein the hand wheel is coaxially and movably connected with the steel belt mounting module, and each connecting rod tensioning module is arranged in the steel belt mounting module; and a steel belt is sleeved with the steel belt mounting module. The hand wheel rotates to enable each connecting rod tensioning module to work, and each connecting rod tensioning module drives the steel belt mounting module to realize tensioning of the steel belt. The four-connecting-rod principle is applied, tensioning of the steel belt in the circumferential direction and the radial direction is achieved through one-time downward pressing of a cover plate, and the steel belt replacing efficiency is greatly improved. A connecting rod mechanism is used, and the cost is reduced.