98results about How to "Guaranteed directionality" patented technology

The invention discloses a self-propelled peeping probe adapted to different diameters of drill holes and a peeping method thereof. The probe comprises a peeping probe body, a camera, walking wheels, rocker arms connected to the walking wheels, and an operating host. The rock arms can achieve a certain angle of damping opening and closing under the effects of internal torsion springs and gas springs and have alarm functions, and the rocker arms can be fixed in grooves of a peeping probe side through locking holes and locking blocks. The self-propelled function of the peeping probe in a drill hole can be achieved through an internal power supply, a driving motor, a video processing module, a control module, a WIFI module and the external operating host. The peeping probe has the advantages of centered drill hole, self-propelling and less workers in operation in a drilling peeping operation process, the complexity in a conventional drilling peeping operation is reduced, a push rod and a video transmission line are removed, auxiliary accessories are greatly reduced, and a new solution is provided for determining the fracture of a rock mass through drilling peeping in underground engineering.

The invention discloses a super-high diagonal symmetric forced grooving method without a grooving well, and belongs to the field of underground mining. The method includes the steps of 1, according to stope conditions, carrying out construction and completing construction of an extracted ore drift, a cutting roadway, a linked roadway and a gathering trench to form a stope; 2, carrying construction on the middle of the cutting roadway to form a roof cutting area, wherein the roof cutting area is a triangular area; 3, determining drilling construction sites at the bilateral symmetry positions of the roof cutting area of the cutting roadway through a drilling trolley, wherein drilling is carried out in the drilling construction sites according to forward inclination angles of blast hole row surfaces, the forward inclination angles are 40-88 degrees relative to the horizontal plane, and horizontal dip angles of the blast hole row surfaces from the middle to the two sides are gradually increased; and 4, after drilling is completed, carrying out filling to form a blast hole filling area, carrying out blasting sequentially according to the blast hole row surfaces, blasting the blasting holes in two symmetric hole sites each time, then carrying out blasting continuously and withdrawing ore through blasting. The method has the advantages that the sub-section height of the stope is large, the cost is low and the safety risk is low.

The invention belongs to the technical field of automation engineering, relates to a phase correction method for space universal rotating field azimuth errors, and specifically discloses a linear polarization voltage phase difference compensation method. The method is characterized in that voltage phases of large coils serve as measuring references, the phase difference of the input voltage of small coils and the phase difference of the input voltage of intermediate coils are measured according to linear polarization characteristics of two-phase orthogonal harmonic signal superposition, digital compensation is performed on the input voltage, and the influence on the rotating field azimuth errors and caused by different electric parameters of the three sets of coils is eliminated. The beneficial effects of the method are that by employing the linear polarization voltage phase difference compensation method, the superposition rotating field azimuth errors due to the difference of the electric parameters of the three sets of Helmholtz coils with different structures can be eliminated, the azimuth accuracy of the space universal rotating field can be improved, the influence on the azimuth accuracy of the space universal rotating field and caused by coil mutual inductance can especially be eliminated, and a technical problem that coil mutual inductance calculation and compensation are difficult can be solved.

The embodiment of the invention provides an antenna unit and terminal equipment, and relates to the technical field of communication. By the antenna unit and the terminal equipment, the problem that afew frequency bands are covered by a millimeter wave antenna of the terminal equipment to cause relatively poor antenna performance of the terminal equipment is solved. The antenna unit comprises aninsulation groove, M feeding parts, M coupling bodies, a first insulator, at least two radiation bodies, a first radiation body and an isolation body, wherein the M feeding parts are arranged in the insulation groove, the at least two radiation bodies are borne by the first insulation body, the first radiation body is arranged at the bottom of the insulation groove, the isolation body is arrangedin a way encircling the M coupling bodies, the M feeding parts are isolated from the first radiation body and the isolation body, the M coupling bodies are arranged between the first radiation body and the first insulation body, each feeding part in the M feeding parts is electrically connected with one of the coupling bodies, each coupling body in the M coupling bodies is coupled to the at leasttwo radiation bodies and the first radiation body, the resonant frequencies of the different radiation bodies are different, and M is a positive integer. The antenna unit is applied to the terminal equipment.

The invention discloses a uniform electromagnetic force field generation device and a method, which can be used for a space microgravity ground simulation experiment. A normal conductive liquid is used for magnetic mixing and suspension, a multi-point support is adopted, an excitation coil and a permanent magnet are designed, a multi-pole coupled electromagnetic field is generated, a needed electromagnetic force is provided in experiment space, the axial electromagnetic force at any point in an identical height and uncontrolled state is the same, a horizontal electromagnetic force is basically zero, and the electromagnetic forces of different heights in the space can reach a required constant value via an active control system. In the given three-dimensional experiment space, a constant electromagnetic force is generated for a moving body according to requirements, and the moving body is constantly in a microgravity simulation effect state. As for different experiment purposes and the moving bodies, the required constant electromagnetic forces are different, the size of the required uniform force field can be regulated and controlled via the active control system of the device, and different space microgravity ground simulation experiment requirements can be met.

The invention discloses a warehouse mobile robot path planning method based on an improved ant colony algorithm. The method comprises the following steps: firstly, dividing an ant colony into a plurality of sub-ant colonies; performing path search by using each sub ant colony, and sorting according to utility function values to obtain better ants; updating the pheromones to neighbor sub ant colonies, and outputting an initial path after iterating for a set number of times; if no obstacle exists between connecting lines of any two nodes in the initial path, the two nodes are directly connected,and path planning of the warehouse mobile robot is completed; according to the method, the path search results are sorted by utilizing the utility function, so that the pheromones have correct directivity, the probability that ants select shorter paths is improved, and blindness in the search process is avoided; through information exchange among the sub ant colonies, the searching capability ofthe whole ant colony and the speed of searching the shortest path are improved; and the intermediate nodes are smoothed, so that the turning times and the total length of the planned path are reduced,and the running efficiency of the warehouse is effectively improved.

The invention discloses a let-off mechanism, a rapier loom comprising the same, and a control method for the let-off mechanism. Compared with the prior art using individual control technology, the link between let-off mechanisms is enhanced; certain rotation speed ratios are provided for all let-off rollers through setting a transmission ratio for a speed changer; during a let-off process, intermediate driving values of the speeds of the multiple let-off rollers are obtained through the detection performed by sensors and the calculation performed by a controller, the mean value of the multiple intermediate driving values is worked out, and the rotation speed change of a driving motor is controlled according to the mean value; the improvement of the accuracy and stability of the rotation speed change is facilitated; the rotation speed change directions of the let-off rollers are the same all the time, so that the uniformity of the change tendencies of warp yarns on all the let-off rollers is facilitated; and the reduction of the influence, caused by the rotation speed change of the driving motor, on the instant tension of the warp yarns can be facilitated through a step of calculating the intermediate driving values and a step of calculating the result driving value, so that the stability of the tension of the warp yarns can be guaranteed and the tension tends to reach a preset value of the controller.

The invention provides a method for ingoting polycrystalline silicon, which comprises the following steps: forming a coating with first preset thickness on bottom of a crucible, wherein the coating contains solid particles, the solid particles can be at least one of quartz sand, silicon nitride powder and silicon carbide powder, spraying silicon nitride on the bottom and inside wall of the crucible; paving the broken silicon chips with second preset thickness on the bottom of the crucible, wherein the shape and size of the broken silicon chips are not same, and distributed at the bottom of the crucible, then placing the silicon material in the crucible, compressing the broken silicon chips by the silicon material, forming dent on the coating; and integrally heating the crucible until the broken silicon chips and the silicon material are fully fused. The method can ensure the high conversion efficiency of polycrystalline silicon ingot, reduce energy consumption during the production process, reduce the production cost, increase the crystalline yield rate of the silicon ingot, and increase the integral production power of the silicon chip.

The invention belongs to the technical field of solar cells, and relates to a two-dimensional silicon-based micro-nano photonic crystal solar cell. The two-dimensional silicon-based micro-nano photonic crystal solar cell is characterized in that front electrodes which are periodically arrayed are arranged on the lower side surface of a front contact layer; a two-dimensional silicon-based micro-nano photonic crystal solar cell structure is arranged between the front electrodes and back electrodes, upper layers of the two-dimensional silicon-based micro-nano photonic crystal solar cell structure are type-n silicon semiconductor layers, a lower layer of the two-dimensional silicon-based micro-nano photonic crystal solar cell structure is a type-p silicon semiconductor layer, and PN junctions are formed by the type-n silicon semiconductor layers and the type-p silicon semiconductor layer; a back contact layer is arranged at the bottoms of the back electrodes, and the back contact layer and the front contact layer are made of identical materials; the back electrodes which are of aluminum thin layer structures are arranged in slow-light regions or band-gap regions of the type-p silicon semiconductor layer. The two-dimensional silicon-based micro-nano photonic crystal solar cell has the advantages that the two-dimensional silicon-based micro-nano photonic crystal solar cell is simple in structure, small in size, low in threshold, short in carrier diffusion distance and high in stability, light coupling efficiency and light transmission efficiency, is far thinner than the traditional silicon solar cell and becomes a new-generation low-cost and efficient solar cell device with the maximum potential, and mature processing and composite technologies are implemented.

The invention discloses a test apparatus for the axial static rigidity of a main shaft. Axial load is applied to or unloaded from a main shaft through a locking rod. The locking rod is connected to a locking rod sleeve ring through a screw thread pair. The locking rod sleeve ring adjusts the horizontal height of the locking rod by sliding in a slide groove. A force sensor and a displacement sensor are adopted to measure the axial load and the axial displacement of a main shaft unit respectively. The force sensor and the displacement sensor both can slide along the slide groove so that the relative positions between the force sensor and a main shaft unit rotor and between the displacement sensor and the main shaft unit rotor are adjusted. An NI data collection card is employed to collect the axial load measured by the force sensor and the axial displacement collected by the displacement sensor, and a computer displays a static rigidity curve of the axial load-the axial displacement of the main shaft. Relative positions between the main shaft unit rotor and the force sensor, the displacement sensor, the locking rod sleeve ring and the locking rod are adjusted according to the diameter of the main shaft. In this way, the axial load and the axial displacement of main shafts different in diameter can be measured, and the test efficiency of the axial rigidity of a main shaft is guaranteed.

The invention discloses a preparation method for a carbon fiber annular cathode. The carbon fiber annular cathode is made through directly installing and clamping a fashioned carbon fiber annular cathode material on a cathode base and the fashioned carbon fiber annular cathode material is made through bending a carbon fiber sheet cathode material to an annular shape along the length direction. The carbon fiber sheet cathode material is of a three-layer composite sandwich-type structure, and the three-layer composite sandwich-type structure comprises two metal foil sheets on the outer sides and carbon fiber cloth clamped between the two metal foil sheets. By means of the preparation method for the carbon fiber annular cathode, the carbon fiber annular cathode is enabled to have strong designability, evenly distributed carbon fibers along the axial direction of an electron emission end guarantee the directionality and uniformity of emitted electrons. The preparation method for the carbon fiber annular cathode is simple in technique, low in cost, high in operability and capable of meeting emission requirements on property of different electrons.

The invention discloses a pre-bent type artificial cochlea electrode. The pre-bent type artificial cochlea electrode comprises a wire electrode convergence beam formed by M sets of wire electrodes, a plurality of electrode contacts and M elastic rubber rings, wherein every two adjacent wire electrodes are insulated from each other. The first elastic rubber ring is used for wrapping the first set of wire electrodes. In this way, the M elastic rubber ring is used for wrapping all the sets of wire electrodes. Each wire electrode is made of Ni-Ti shape memory alloy and has two memory shapes so that the whole wire electrode convergence beam can have two shapes as well. When the temperature is the normal cochlea temperature of the human body, the wire electrodes are bent, and the whole wire electrode convergence beam is in a spirochete shape which is the same as the shape of the human cochlea; when the temperature is 0 DEG C, the wire electrodes are smooth and straight, and the whole wire electrode convergence beam is accordingly smooth and straight. When the wire electrodes are bent, the electrode contacts are drawn to move accordingly. The pre-bent type artificial cochlea electrode is simple in structure and can be conveniently implanted.

The invention discloses a method for effectively observing a tomato root knot giant cell paraffin section. The method studies three key factors affecting the effect of the tomato root knot giant cellparaffin section, and the tomato root knot giant cell paraffin section technology includes a new material-taking and embedding method and a section selection technology is established. The technologyobviously improves the working efficiency of the tomato root knot giant cell paraffin section, improves the section selection quality, and ensures the effect of the tomato root knot giant cell paraffin section. The method has the advantages of high practicality and clear technical parameters, can be used for developing a related paraffin section embedding die and a matched paraffin section specialtechnology, and can be widely promoted and applied.

The invention discloses a method for soil relocation and returning, in particular to a method for the relocation and returning of undisturbed soil, belonging to the technical field of agricultural and forestry. The method comprises the following steps of: firstly adopting a drill and a chain saw to carry out non-extrusion/impact-type cutting to the soil to be relocated; subsequently adopting a combined movable-plate-type earthwork special die and a special hydraulic machine to take the earthwork by a certain flow; transporting the die containing the earthwork to the destination; and finally returning the relocated earthwork according to the repeated sequence of the design. By adopting the homing method of moving soleplate, the method realizes seamless butting to the soil, avoids cracking and loosing the earthwork or damaging pores due to internal deformation caused by directly pushing the earthwork, avoids cracking, loosing and fallout of the soil, quickly melts and recovers the adjacent earthworks after homing, ensures the original state of soil and normal growth of plant, is applied to the relocation of agricultural and forestry experimental plots and has excellent generalization and application prospect.

The invention provides a folding, unfolding and catapult recycling device for a ram air parachute. The device comprises a folding and unfolding device and a catapult recycling device, wherein the folding and unfolding device is arranged inside an air chamber located in the middle of the ram air parachute; the device comprises a parachute folding support, a parachute folding rope and a rope take-upreel, wherein the parachute folding support is used for supporting a middle air chamber, it is ensured that the appearance of the middle air chamber is kept in the opening state of the air inlet allthe time, in other words, it is ensured that the appearance of the middle air chamber can be kept during recycling, and the parachute can be unfolded after being released. The parachute folding rope is used for being driven by the rope take-up reel to translate the parachutes on the left and right sides of the middle air chamber to the middle and recycle the parachutes. The catapult recycling device is arranged inside a load bin and used for catapult recycling of parachutes. By adopting the folding, unfolding and catapult recycling device, the ram air parachute can be directly catapulted intoair to be opened and achieve taking-off, during landing, the parachute is recycled for next automatic parachute unfolding, the requirement for a parachute unfolding site is greatly lowered, and the device is applicable to parachute unfolding at more complex terrains.

The invention discloses auxiliary fitness equipment. The auxiliary fitness equipment comprises a long-strip-shaped base; two U-shaped mobile pedals are arranged on the long-strip-shaped base in a sliding and sleeving mode; the two first supporting shafts are connected with the two U-shaped mobile pedals, and two idler wheels are arranged on each of the two first supporting shafts; the gear is located between the two oppositely-arranged first supporting shafts; the number of the straight tooth linkage rods is two, one end of each straight tooth linkage rod is fixedly connected with the corresponding first supporting shaft, and the straight tooth parts of the two straight tooth linkage rods are located on the two sides of the gear respectively and are in engaged transmission connection withthe gear. According to the auxiliary fitness equipment, through meshing transmission of the two straight tooth linkage rods and the gears, it can be guaranteed that the two U-shaped mobile pedals movelinearly, then it is guaranteed that the two legs move linearly, leg clamping action can be achieved easily, and the fitness effect is guaranteed.

The invention discloses a laser radar, and a fast axis and slow axis light beam energy convergence system and convergence method. The fast axis and slow axis light beam energy convergence system comprises a correction device, a focusing device and a collimation device, wherein the correction device is used for correcting divergence angles of an outgoing beam in a fast axis and a slow axis to be same or approximately same; the focusing device is arranged on the light exit side of the correction device, so that the outgoing angles of the outgoing beam in the fast axis direction and the slow axisdirection are the same or approximately same, and thus a focusing light source is acquired; the collimation device is arranged on the light exit side of the focusing device, and the focus of the object side of the collimation device is arranged at the focus of the focusing device, or arranged close to the focus of the focusing device, so that energy distribution of the outgoing beam is converged;the correction device, the focusing device and the collimation device are provided with the same principle optical axes. By using the fast axis and slow axis light beam energy convergence system andconvergence method, the energy distribution of the outgoing beam can be converged, and thus the condition that the laser radar can work accurately by using the convergence method and system is ensured.

The invention belongs to the technical field of drilling of soil layers or rocks, and provides an advanced grouting reinforcement construction method in a foundation hole of an earth pressure balance shield underneath pass building. The method comprises the following steps that: a shield tunneling machine is stopped in a position, with a horizontal distance of 12m from a middle shield grouting hole, in a reinforcement area; a grabbing head of a pipe piece assembly machine of the shield tunneling machine is rotated to the bottom of the shield tunneling machine, and a drilling machine is mounted on the pipe piece assembly machine; facing to a tunnel face of the foundation hole, the drilling machine is used for drilling holes in the tunnel face and embedding sleeve valve pipes, and shield tail sealing grease is adopted to block reserved grouting holes; after the sleeve valve pipes are embedded in all the drilled holes, an advanced grouting system of the shield tunneling machine is used for synchronously grouting all the sleeve valve pipes; and after all the drilled holes are grouted by 1 hour and slurry is solidified, the shield tunneling machine is forwards pushed by 12m for secondary circular grouting until the reinforcement area is totally finished.