99results about How to "Guaranteed directionality" patented technology

The invention discloses a power load short-term prediction method, model, device and system, and the method comprises the steps of receiving the load data, and complementing the missing data of the load data; receiving the influence factor data which comprises the air temperature data, the holiday data and the industry category data to which the power consumers belong, and quantifying the influence factors by adopting a quantification method corresponding to the load data; processing the historical load data by adopting the wavelet decomposition, carrying out the multi-scale decomposition to obtain four historical load reconstruction data sequences, and respectively carrying out correlation measurement on the four historical load reconstruction data sequences and the influence factor datato obtain a correlation characteristic data set of each reconstruction load characteristic and the influence factor; and carrying out preliminary prediction on the four sequences obtained according tothe load data by adopting a cubic exponential smoothing algorithm, further optimizing a preliminary prediction result, and finally obtaining a power short-term load prediction value as the power loadscheduling reference data.

A punching die capable of increasing the working accuracy of a work (W) by suppressing a clearance between a punch body (11) and a punch guide (5) to almost eliminate a step on the punched surface (cut surface) of the work (W). The punching die comprises a plurality of rotation restricting means. Each of the rotation restricting means comprises the tubular punch guide (5), the punch body (11) vertically movably installed in the punch guide (5), a punch head (25) installed at the upper end part of the punch body (11), a stripper spring (27) fitted to the lower side of the punch head (25), keyways (35) and (41) formed in the punch guide (5) or the punch body (11) so as to be vertically extended, and keys (37) and (43) installed in the punch body (11) or the punch guide (5) and vertically movably fitted into the keyways (35) and (41).

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 invention discloses a multilayered structure integrated filter antenna based on a filter Balun, and mainly solves the problem that the volume of the filter antenna of a traditional monolayer micro-strip structure is larger. The multilayered structure integrated filter comprises a dielectric substrate, a filter part and a radiation unit, wherein the dielectric substrate comprises two micro-strip dielectric substrates and a metal ground; the filter part comprises an input port, the filter Balun positioned on the left sides of the dielectric substrates and two output ports connected with thefiler part; the filter Balun comprises two face-to-face C-shaped second-order stepped impedance resonators etched on the upper dielectric substrate and two back-to-back C-shaped second-order stepped impedance resonators etched on the upper surface of the lower dielectric substrate; the radiation unit is etched on the upper surface of the upper dielectric substrate, and comprises two micro-strip lines, two butterfly printing dipoles and a director. The multilayered structure integrated filter antenna has the advantages of compact structure, wide bandwidth, high frequency edge selectivity and good out-of-band rejection, and can be used for the radio frequency front end of a wireless communication system.

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 relates to a hydraulic bracket with interconnected top and bottom and fully mechanized face supported by a roof, comprising top beams, bases, a shield beam, a swing rod, a jack, a hydraulic prop, a top beam pushing device, a base connecting device and the like. The hydraulic bracket is characterized in that a plurality of hydraulic props are vertically or obliquely arranged between the top beam and the base; the upper end of the shield beam is articulated with the rear part of the top beam; the lower end of the shield beam is articulated with the rear part of the base through the swing rod; guide frames and following frames are intermittently arranged on the working face; adjacent bracket top beams are connected together by the top beam pushing device and the bases are connected by the base connecting device; the top beam jack is horizontally arranged between the adjacent bracket top beam pushing devices; and the base is provided with a base jack. When the frame is being moved, the guide frames at two sides of the following frames are moved forwards to the right place and support the roof, and then continue to move forwards. The bracket has the advantages of simple structure, light weight, convenient and force-saving installation and transportation, convenient and quick operation, good integration, stability and good directivity and wide applicable range, and can be moved with loads.

The invention provides a prebending-type artificial cochlear electrode which comprises an electrode assembly and an inner core, wherein the electrode assembly is composed of an electrode collar and an electrode wire; the length of the electrode assembly is close to that of the inner core; the electrode assembly and the inner core are enclosed into an integral body through silica gel; the inner core is made of a memory alloy material; the shape of the inner core is preset to be identical to that of a human cochlea; and the inner core is arranged inside the electrode assembly. The invention caneffectively ensure the embedding directionality of the electrode; and the prebending-type artificial cochlear electrode is convenient to embed and manufacture, and has the advantage of low power consumption.

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 discloses a low-profile broadband microstrip antenna based on a metasurface. The low-profile broadband microstrip antenna comprises a metasurface radiation layer, a dielectric substratelayer and a feed layer which are sequentially arranged from top to bottom, the metasurface radiation layer is attached to the upper layer of the dielectric substrate, and the feed layer is attached tothe lower layer of the dielectric substrate. The metasurface radiation layer comprises nine circular radiation units. The feed layer comprises a CPW feed line, a triangular metal branch, a gradual change type coupling gap and a metal floor. Signals are input through the CPW feed line and are coupled to the metasurface radiation layer through the triangular metal branch and the gradual change typecoupling gaps, and therefore a wide impedance bandwidth is formed. By adopting the metasurface structure taking a circular patch as a radiation unit, the impedance bandwidth of the whole antenna is improved, and the directivity of the high-frequency-band antenna is ensured. A gradual change type coupling feed structure is adopted, and compared with coupling feed of the CPW feed line, the gradualchange type structure can greatly improve the impedance bandwidth of the antenna and can reduce the profile of the antenna.

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 field of a solar battery technology, and relates to a two-dimensional silicon-based photonic crystal solar battery. The lower side surface of a front contact layer is provided with a front electrode; a honeycomb-like solar battery structure is arranged between the front electrode and a back electrode, the upper layer of the honeycomb-like solar battery structure is an N-type silicon semiconductor layer, the lower layer of the honeycomb-like solar battery structure is a P-type silicon semiconductor layer, and the N-type silicon semiconductor layer and the p-type silicon semiconductor layer form a PN junction; the bottom of the back electrode is provided with a back contact layer, and the material of the back contact layer is the same as the material of the front contact layer; the back electrode is arranged in a slow light area or a forbidden band area of the P-type silicon semiconductor layer, the shape of the back electrode is the same as the shape of the front electrode, and the front electrode and the back electrode are both strip-shaped; and incident light is irradiated on the honeycomb-like solar battery structure through the front contact layer. The two-dimensional silicon-based photonic crystal solar battery is regular in structure, high in flexibility and changeability and mature in processing and compounding technologies, thereby being a low-cost high-efficiency solar battery device with most potential of a new generation.

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 provides a sleep conditioning method. A person to be treated is treated through the following steps of 1, insomnia constitution detection and diagnostic, wherein the insomnia constitution is divided into yang deficiency type insomnia constitution, yin deficiency type insomnia constitution and mixed type insomnia constitution according to the detection and diagnostic result, 2, comprehensive conditioning preconditioning, wherein a comprehensive conditioning scheme is selected according to different types of insomnia constitutions, and the best medicine compatibility selection is conducted in the previous stage of the conditioning, 3, real-time monitoring of automatic broadcasting-controlled sound wave system conditioning, wherein different sound wave conditioning effects are compared according to the detected pulse, breathing, body temperature and other human body signals of a customer, 4, material medica channel tropism conditioning, wherein a material medica coating scheme is determined according to the dialectic and 5, collateral dredging and refreshing. The sleep conditioning method provides a green, safe, comfortable and effective sleep conditioning method for many sleep disorders.

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 relates to a vertical shaft impact type crusher. A forward-rotating motor is arranged on a frame and is connected with one end of a rotating shaft, the other end of the rotating shaft penetrates through the bottom wall of a body, is arranged in a cavity of the body and is uniformly provided with forward-rotating rib plates; a barrel is arranged in the cavity of the body; rolling shafts are uniformly arranged on side walls of the body; the rolling shaft and the barrel are assembled together in a matched manner; reverse-rotating rib plates are uniformly arranged on the inner side wall of the barrel; ring gears are mounted on the outer side walls of the barrel; the frame is further provided with a reverse-rotating motor; and a gear is assembled on the reverse-rotating motor, penetrates through an opening and is matched with the corresponding ring gear. By the reverse-rotating rib plates of which the rotation direction is opposite to that of the forward-rotating rib plates, thrown-out stones are further impacted and crushed, and after the stones are impacted and crushed, the refining effect is good.

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.

A vehicle lamplight mutual control system comprises an acousto-optic transmitting and receiving device, an external light sensor, a total controller and a lamplight controller. The acousto-optic transmitting and receiving device is provided with a front ultrasonic wave emitter, a front ultrasonic wave receiver, a front light sensor, a rear ultrasonic wave emitter, a rear ultrasonic wave receiver, a rear light sensor and a vacuum cavity shell. The acousto-optic transmitting and receiving device is connected with the total controller and is controlled by the total controller. The external light sensor is connected with the total controller and is controlled by the total controller. The lamplight controller is connected with the total controller and is connected by the total controller. Automatic operation of vehicle lamplight use is achieved through mutual control, and bad habits and faults of manual operation are prevented. An ultrasonic wave is used and taken as an information transmission medium, and directivity of signal transmission is ensured. The acousto-optic transmitting and receiving device is provided with the vacuum cavity shell, and guarantees emitting and receiving accuracy of an acousto-optic signal. The vehicle lamplight mutual control system is low in cost, convenient to install and reform, and easy to popularize.

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 provides a prebending-type artificial cochlear electrode which comprises an electrode assembly and an inner core, wherein the electrode assembly is composed of an electrode collar and an electrode wire; the length of the electrode assembly is close to that of the inner core; the electrode assembly and the inner core are enclosed into an integral body through silica gel; the inner core is made of a memory alloy material; the shape of the inner core is preset to be identical to that of a human cochlea; and the inner core is arranged inside the electrode assembly. The invention caneffectively ensure the embedding directionality of the electrode; and the prebending-type artificial cochlear electrode is convenient to embed and manufacture, and has the advantage of low power consumption.

A one-dimensional fiber bragg grating vibration sensor with temperature and prestress compensation is characterized in that a track penetrates through the bottom in a sensor shell, a left prestress adjusting table and a right prestress adjusting table are arranged on the tracks on the two sides outside the sensor shell, a mass block is connected to the track in the middle in the sensor shell through a sliding block, and an optical fiber is adhered to the mass block; a first grating and a second grating are inscribed on the optical fiber, tail fibers at the two ends of the optical fiber penetrate through the sensor shell to be fixedly arranged on a left prestress adjusting table and a right prestress adjusting table respectively, a left spring plunger sequentially penetrates through the left prestress adjusting table and the sensor shell, and a positioning ball at the end of the left spring plunger abuts against the left side wall of the mass block. Left spring plungers on the two sides of the left prestress adjusting table are in threaded connection with a left outer adjusting nut and a left inner adjusting nut, a right spring plunger sequentially penetrates through the right prestress adjusting table and the sensor shell, and a positioning ball at the end of the right spring plunger abuts against the right side wall of the mass block. A right outer adjusting nut and a right inner adjusting nut are in threaded connection with right spring plungers on the two sides of the right prestress adjusting table.

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.