212results about How to "Avoid crossing" patented technology

The invention relates to the technical field of wire rod processing, and discloses wire rod assembling equipment and a wire rod assembling process. The wire assembling equipment is used for installing a reinforcing needle in a core wire hole of a wire, the wire assembling equipment comprises a fixing device, a wire reaming device and a wire assembling device, and the fixing device is provided with a first installation station and a second installation station which are used for fixing the wire; the wire chambering device is arranged on one side of the first mounting station and comprises a first driving part and a chambering needle, a conical chambering part is arranged at one end, facing the fixing device, of the chambering needle, and the first driving part drives the chambering needle to move in the first direction so that the chambering part can stretch into the core wire hole; the wire assembling device is arranged on one side of the second installation station and used for pushing the reinforcing needle into the core wire hole in an abutting mode. According to the invention, the core wires do not need to be opened outwards when the reinforcing needles are installed, so that the core wires can be prevented from crossing, and the risk of crushing the core wires in the wire manufacturing process is greatly reduced.

The invention discloses a solution concentration device for a water purifying agent, which comprises a top concentration tank and a bottom concentration tank, and the top concentration tank is erected above the bottom concentration tank. The device has the beneficial effects that the top concentration tank is adopted, when the top concentration tank is used for concentrating a water purifying agent solution, a worker can pump the water purifying agent solution into a first flow dividing disc in a pressurizing manner through a pressurizing conveying pump, and the water purifying agent solution enters an inner pipe after being divided by the first flow dividing disc; a pressure maintaining valve mounted on the surface of the inner pipe keeps the internal pressure of the inner pipe, pure water in a water purifying agent solution enters the bottom of the top concentration tank after penetrating through a polyamide film layer, a polysulfone supporting layer and a polyester substrate layer and is discharged along a water discharging pipe, and after a part of pure water is filtered out by pressurizing a water purifying agent solvent in the inner pipe, primary concentration is completed; the energy consumption is far lower than that of traditional high-temperature concentration and low-temperature concentration when the pressurizing delivery pump works, and the pressurizing delivery pump is more energy-saving and environment-friendly, higher in speed and higher in working efficiency and working continuity.

The invention relates to the field of aluminum alloy door and window enterprises, and discloses an electrostatic powder spraying process and device for aluminum alloy machining, and the electrostatic powder spraying process comprises the following steps: pretreatment: pretreating an aluminum alloy base material, the pretreatment comprises polishing, cleaning and preheating treatment; powder treatment is conducted, specifically, a treatment agent accounting for 5%-10% of the mass of the powder base material is added into the powder base material, high-speed stirring is conducted, spraying powder is obtained, and the treatment agent is composed of a low-Tg polyester resin modifier and nano titanium dioxide; and electrostatic spraying is conducted, specifically, powder spraying is conducted on the surface of the pretreated aluminum alloy base material through electrostatic powder spraying equipment through spraying powder. Powder added with a treating agent is sprayed to an aluminum alloy base material, low-temperature rapid curing is conducted, the curing process of the coating is rapidly completed at the relatively low temperature through stage gradient temperature curing and auxiliary curing, and the curing efficiency and quality are further improved through ultraviolet light and microwave auxiliary curing.

The invention relates to the technical field of path planning, in particular to a bucket wheel machine unmanned collaborative operation reclaiming path planning method, which comprises the following steps of: constructing a three-dimensional stacking model of a stock ground, and determining an operation overlapping area of adjacent bucket wheel machines according to operation positions and operation ranges of the adjacent bucket wheel machines; dividing the stockpile in the operation overlapping area into a plurality of stockpile blocks, and generating a priority distribution table of the stockpile blocks in the overlapping area through priority calculation; based on the priority distribution table, the stacking blocks in the operation overlapping area are distributed to the two adjacent bucket wheel machines; planning a preliminary path for each bucket wheel machine by using the distribution result, wherein the path planning needs to be followed; and updating the stacking form and adjusting the path in real time. According to the invention, the conflict of processing the same stockpile block by two bucket wheel machines is effectively avoided, dynamic balance of task load is realized, and high efficiency and continuity of collaborative operation are ensured.

The invention relates to the technical field of tail gas absorption towers, in particular to a tail gas absorption tower which comprises a tail gas absorption tower body, a spraying layer and a liquid storage area are arranged in the tail gas absorption tower body, a plurality of reaction plates are arranged below the spraying layer, a plurality of reaction pieces are arranged on the reaction plates, a plurality of demisting plates are arranged above the spraying layer, and a plurality of demisting pieces are arranged on the demisting plates. Each demisting piece comprises a support, a second avoiding space is formed between each support and the corresponding demisting plate, a demisting cover is arranged at the top of each support, the center of each demisting plate is sunken downwards, a flow guide hole is formed in the center of each demisting plate, a liquid drainage head is connected to the center of the bottom end of the lowermost demisting plate, and the top end of the liquid drainage head is communicated with the flow guide hole of the upper demisting plate. Therefore, the contact time of the purification liquid and the tail gas can be prolonged, the purification effect is improved, liquid drops in the purified gas are effectively removed, and the purification effect is improved.

The invention discloses a device and a method for extracting lithium sulfate in salt lake brine, and relates to the field of lithium sulfate production process, the device comprises a treatment tank, an upper cover for sealing is arranged at the top of the treatment tank, a supporting frame for supporting is arranged outside the treatment tank, and the device further comprises a filtering part for filtering a solvent, a filter plate is cleaned through an upper scraping assembly and an ejection assembly in the cleaning mechanism, filtered materials are discharged into a collecting barrel through a feeding port to be discharged, the filter plate is rotated into the cleaning mechanism, the situation that the filtered materials penetrate through the filter plate due to scraping of the filtered materials in the cleaning and filtering process is avoided, and the purity of filtered liquid is guaranteed; and in the cleaning process, filtering is not affected, and equipment does not need to be paused for cleaning.

The utility model relates to a distribution box mounting structure and a distribution box, and relates to the technical field of power equipment. The distribution box installation structure comprises a box body, a support and a supporting member. The support is located in the box body and arranged at the bottom of the box body, a containing cavity is formed in the support, and the containing cavity has a preset height; the supporting piece is arranged on the side, away from the bottom of the box body, of the support through a connecting piece, the connecting piece is inserted into the containing cavity, and the supporting piece is used for installing a piece to be installed. According to the technical scheme disclosed by the utility model, the problem that devices such as an optical modem and a router are difficult to install in a weak current box can be solved.

The invention discloses a method for evaluating the operation area and operation quality of multiple agricultural machines in the same farmland plot in real time. The method comprises the steps of information collection, drawing of an available cultivated land plot representation graph, agricultural machine track drawing, calculation of an initialized agricultural machine track area, calculation of task completion degree and agricultural machine operation quality evaluation. According to the method, the problems of operation area measurement and operation quality evaluation when multiple agricultural machines cooperatively operate on the same farmland plot are effectively solved, and scientific operation suggestions can be provided for farmers, the operation process can be optimized and the overall benefits of agricultural production can be improved by combining accurate measurement of the real-time operation area and real-time evaluation of the operation quality.

The utility model provides a mattress with high waterproof performance, which belongs to the technical field of mattresses, and comprises a mattress body, a silica gel frame, water-absorbing cotton cloth, a magic tape rough surface and a magic tape hook surface, the silica gel frame is fixedly arranged on the outer side of the upper surface of the mattress body, the magic tape rough surface is sewed on the upper surface of the mattress body, and the water-absorbing cotton cloth is arranged on the water-absorbing cotton cloth. A magic tape hook surface is sewn at the bottom of the water-absorbing cotton cloth; according to the mattress, the water-absorbing cotton cloth is arranged and can absorb body fluid generated by gatism of a patient, the water-absorbing cotton cloth is adhered to the mattress body in a hook-and-loop fastener adhering mode, the water-absorbing cotton cloth can be conveniently taken out of the mattress body, and therefore the water-absorbing cotton cloth can be conveniently cleaned, and due to the arrangement of the silica gel frame, the water-absorbing cotton cloth is convenient to clean. The side face of the water-absorbing cotton cloth is conveniently blocked, the water-absorbing cotton cloth is prevented from being extruded after absorbing body fluid, the body fluid is prevented from falling to the bottom face of a ward from the periphery of the mattress body after being extruded from the side face of the water-absorbing cotton cloth, and sanitation of the ward is guaranteed.

The present invention discloses a method for realizing orthogonal connection of flow chart nodes, and relates to the field of information technology. The method comprises the following steps: processing the boundary boxes of the starting node and the ending node in the flow chart respectively to obtain the processed node positions and boundary information; constructing the scale layer, grid layer and reference points of the flow chart in sequence based on the processed node positions and boundary information, and establishing an optimized grid route map according to the adjacent relationship between the reference points; calculating the shortest path between the starting node and the ending node in the optimized grid route map, and extracting the best orthogonal connection path from the shortest path calculation result. The present invention comprehensively considers factors such as path length, number of inflection points, overlap between the connection line and the node boundary, and connection line crossing nodes by improving the Dijkstra algorithm, so as to generate more beautiful and standardized orthogonal connection lines of flow chart nodes.

The present invention discloses a tungsten chemical vapor deposition method, comprising: step 1, providing a bottom structure with a first adhesion layer and a second barrier layer formed on the surface. Step 2, performing tungsten chemical vapor deposition on the surface of the second barrier layer to form a tungsten layer. The tungsten layer is formed by superposition of a tungsten seed layer and a tungsten main layer. During the deposition of the tungsten seed layer, the process gas is introduced into the reaction chamber in the following steps: step 21, introducing a tungsten-containing precursor and introducing a first reducing agent gas at the same time. Step 22, introducing a second reducing agent gas after a first delay, and forming a tungsten seed layer by a nucleation reaction between the tungsten-containing precursor and the second reducing agent gas. The activity of the first reducing agent gas is less than that of the second reducing agent gas, and is used to prevent the ions of the tungsten-containing precursor from corroding the first adhesion layer when a switching operation failure occurs in the second reducing agent gas. The present invention can prevent abnormal nucleation and thus avoid product scrapping caused by abnormal nucleation, and finally improve the product yield.

The invention discloses pipe fitting necking-down equipment, and relates to the technical field of pipe fitting orifice machining, the pipe fitting necking-down equipment comprises a workbench, a mounting frame is arranged at the bottom of the workbench, a mounting groove is formed in the workbench, a stamping structure is arranged in the mounting groove, and first fixing plates are arranged at the positions, at the two ends of the mounting groove, of the workbench; first supporting columns are arranged on the opposite side faces of the two first fixing plates, the first supporting columns are connected with the stamping structure, second supporting columns are installed at the top and the bottom of the forming base, second fixing plates are installed on the second supporting columns, and driving mechanisms are installed on the side faces of the first fixing plates and the side faces of the second fixing plates. The square pipe fitting is placed in the forming base of the stamping structure, the driving mechanism is connected with the stamping structure, the driving mechanism drives the stamping male dies of the stamping structure to push towards the side wall of the square pipe fitting, the first driving piece drives the driving rod, and the four stamping male dies are pushed towards the square pipe fitting at the same time till the end opening of the square pipe fitting is stamped into a necking opening.

The fireproof door with the smoke isolation effect comprises a door frame, the surface of a first rotating shaft is fixedly connected with a fireproof door plate, a sealing plate is installed in a lifting groove in a sliding mode, one side of the sealing plate is fixedly connected with a lifting pipe, and the interior of the lifting pipe is in threaded connection with a first threaded transmission rod. A first bevel gear is fixedly connected to the surface of the first threaded transmission rod, one end of a second rotating shaft penetrates through the fireproof door plate and is fixedly connected with a second bevel gear, the second bevel gear is in meshed connection with the first bevel gear, the other end of the second rotating shaft is fixedly connected with a screwing rod, sealing grooves are formed in the two faces of the top and the two faces of the bottom of the door frame, and the sealing plate is matched with the sealing grooves. The fireproof door has the advantages that through meshing connection of the first bevel gear and the second bevel gear, the first threaded transmission rod drives the lifting pipe and the sealing plate at the two ends to move up and down by rotating the screwing rod, the sealing plate is installed in the sealing groove in a sliding mode, a gap between the fireproof door plate and a door frame is sealed, and smoke is prevented from entering from the gap.

The utility model discloses an interception type trash holding structure for river regulation, and belongs to the technical field of river regulation, the technical scheme is that the interception type trash holding structure comprises a trash holding net, and a floating lifting assembly is arranged on the outer side of the trash holding net. The floating blocks on the two sides can enable the trash holding net to automatically adjust the height along with rising and falling of the water level by means of buoyancy, when the water level rises, the floating blocks drive the trash holding net to move upwards, garbage is prevented from crossing over the trash holding net, it is ensured that pollutants can be effectively intercepted all the time, and when the water level falls, the trash holding net also falls along with the trash holding net to continuously play an interception role. The connecting rods on the inner sides of the floating blocks are stably connected with the trash holding net, meanwhile, the floating blocks on the two sides of the trash holding net float more stably, pulleys in the guide grooves are matched with the guide rails, the trash holding net can be guided to ascend and descend stably, friction is reduced, the stability of the whole structure is enhanced, and the stability of the guide rails is improved through the balancing weight at the bottom. Therefore, the stability of the trash holding net in water is ensured.

The utility model discloses ventilative sun protection sateen cloth relates to the technical field of fabric, and its technical scheme main points are: including outer layer and inner layer, and the outer layer and inner layer are fixed through the structure strip each other, and the outer layer includes first shading part and first ventilative part, and the inner layer includes second ventilative part and second shading part. First shading part can prevent the sunlight from passing through the outer layer, and the sunlight that partly passes through first ventilative part can be blocked by second shading part on the inner layer, thereby effectively prevent the possibility of the sunlight from passing through this sateen cloth, and the setting of first ventilative part and second ventilative part makes the air on both sides of sateen cloth can exchange, thereby guarantee the ventilative performance of this sateen cloth, and the structure strip that sets up along the inner layer height direction can guarantee the premise of stable connection of inner layer and outer layer, and does not tend to have too much influence on the bending of sateen cloth in horizontal direction, and polyester yarn has excellent sun protection performance, and can better guarantee the blocking ability of sun protection yarn to sunlight.

The utility model relates to the technical field of electric power auxiliary tools, and discloses a line protection device for engineering and technology research, which comprises a base, the outer wall of the base is provided with a first sliding chute and a second sliding chute, the base is internally provided with a first spring, one end of the first spring is fixedly connected with a sliding block, and the other end of the first spring is fixedly connected with a second sliding chute. And the outer wall of the sliding block is slidably connected to the inner wall of the second sliding groove, the other end of the first spring is fixedly connected to the inner wall of the second sliding groove, the upper surface of the sliding block is fixedly connected with a pulling block, and the outer wall of the sliding block is fixedly connected with a clamping cylinder. According to the wire harness fixing device, the first spring rebounds to push the sliding block to slide on the inner wall of the second sliding groove again and drive the pulling block to move, and meanwhile, the clamping cylinder is promoted to slide on the inner wall of the first sliding groove again to fix the wire harness, so that the effect of fixing a circuit is achieved, the circuit can be arranged neatly and orderly, cable crossing or disorder is avoided, and the wire harness fixing device is convenient to use. And maintenance and overhaul are facilitated.

The utility model provides a hanger lock head which comprises a first lock shell provided with a first semi-arc groove and a second lock shell provided with a second semi-arc groove. When the first lock shell and the second lock shell are spliced and locked, the first semi-arc groove and the second semi-arc groove are spliced to form a lock hole for clamping a hanging rod; a rubber pad is further arranged between the first lock shell and the second lock shell. When the first lock shell and the second lock shell are locked, pressure is generated between the rubber pad and the hanging rod. The elastic characteristic of the rubber pad enables the rubber pad to automatically generate contact pressure with the hanging rod when the lock shell is closed, the small size difference of the hanging rod can be adapted, it can be guaranteed that the lock head is kept in a stable clamping state in different use scenes, and reliability is enhanced.

This invention belongs to the field of medical device technology and discloses a surgical instrument system, including an operating arm and a support plate. A drive screw is mounted on the support plate; a drive element is mounted at one end of the drive screw, and a first connecting block and a second connecting block are respectively mounted on the drive screw; a rotating shaft is mounted on each of the first and second connecting blocks, and one end of the rotating shaft is rotatably connected to a surgical sheath for accommodating the operating rods; wherein the central axes of the two surgical sheaths are coplanar. This surgical instrument system can adjust the spacing between the operating rods through self-drive, and the clamping force between the operating rods is directly controlled by the doctor to provide sufficient clamping force when necessary, improving surgical stability; the clamping force is transmitted from the operating rods to the distal end, allowing for controllable handling of the surgical process; simultaneously, the coplanar central axes of the two surgical sheaths effectively prevent the two operating rods from crossing, eliminating the chopstick effect.

The invention relates to the technical field of tobacco processing, and discloses a novel cigar tobacco leaf airing room which comprises an airing chamber, a top plate is arranged at the top of the airing chamber, a drying assembly is arranged below the top plate and comprises a machine shell arranged on the outer wall of the airing chamber, a fan is arranged at the bottom of the machine shell, a fan cover is arranged at the output end of the fan, and a combustor is arranged at the top of the fan cover. A heat energy converter is arranged at the output end of the combustor, a plurality of heat pipes are arranged on the heat energy converter, smoke pipes are arranged at the tails of the heat pipes, an air inlet pipe is arranged above the machine shell, and a filter screen is arranged below the air inlet pipe. Fuel is put into the burner, the burner burns the fuel, the draught fan is started, the draught fan sucks in cold air, heat is conducted through the heat pipe, the cold air is sent into the airing chamber along the exhaust pipe, and hot air can be evenly sent into the airing chamber through the net plate on the top. The tobacco leaves are aired and dried more uniformly, and the airing efficiency is improved.

This utility model relates to the field of pneumatic cabinet technology, proposing a pneumatic cabinet structure that is easy to maintain. The structure includes a cabinet body, a first side mounting compartment located at the bottom of one outer wall of the cabinet body, and a water supply unit fixedly connected to the interior of the first side mounting compartment by screws. A second side mounting compartment is located at the bottom of the other outer wall of the cabinet body. This utility model installs the water supply unit, air pump, and solenoid valve in separate first and second side mounting compartments, respectively. Furthermore, the main electrical installation room and auxiliary electrical installation room are arranged in layers, achieving clear functional zoning, avoiding wiring and piping intersections, and effectively improving maintenance efficiency. The double-door design of the top and bottom cabinets allows for independent maintenance of different functional areas without the need for complete cabinet disassembly. In addition, the centralized arrangement of cooling water and air source interfaces further simplifies external connections and improves space utilization.

The utility model discloses a highland water pump relates to water pump technical field, including base and pump body, pump body fixed mounting is on the base, and the water inlet pipe and drain pipe are fixedly installed on the pump body, and the slide is fixedly arranged on the base, and the sliding slot is equipped on the slide, and the socket is slidably arranged in the sliding slot, and the protection cover is fixedly arranged on the socket, and the connecting frame is fixedly arranged on the protection cover, and the fan is fixedly arranged on the connecting frame, and the protection cover is protected from the sun to the pump body through the protection layer cooperation, and effectively reduce the direct sunlight of ultraviolet to the pump body, and cooperate the fan simultaneously, and form the quick airflow in the protection cover, thereby effectively take away the heat generated when the pump body runs, and the overall heat dissipation effect is good, keeps the stable operation of pump body, and through the cooperation of slide and socket, it is convenient to the protection cover quick dismounting and overhauls, and the external water flow first carries out the primary filtration through the second filter screen, then carries out secondary filtration interception through the first filter screen, intercepts most of the impurities in the water flow, keeps the stable operation of water pump.

The utility model relates to the technical field of drainage ditches, in particular to a permeation drainage ditch for a sponge city, which comprises a drainage mechanism, the drainage mechanism comprises two limiting shells and a bag net, a permeation base is fixedly connected between the two limiting shells, and the opposite sides of the two limiting shells are rotationally connected with limiting frames. According to the device, the first filter screen plates are rotationally connected to the opposite sides of the two limiting shells, the two first filter screen plates are matched to filter and collect sundries, the first filter screen plates are driven to rotate through the inflatable floating sleeve after rain and water are stored, and the first filter screen plates incline to pour the sundries into the collecting shell to be collected; when the two first filter screen plates incline, the pocket net blocks a gap between the two first filter screen plates, sundries are prevented from penetrating through the pocket net, fragments of the lower water plate can be collected when the lower water plate is damaged, subsequent replacement of the lower water plate is more convenient, the sundries penetrating through the lower water plate are convenient to collect, the drainage performance of the permeation base is convenient to maintain, and use is convenient.

A leakage protection structure for a molded case circuit breaker. It mainly solves the problem of short circuit explosion and circuit board damage caused by sampling line damage and other reasons. It is characterized in that: a wire outlet slot and a plurality of sampling holes are provided at the bottom of the base, and a wiring slot is formed between the wire outlet slot and each sampling hole; a protective shell is also installed in the base, and a circuit board is arranged in the protective shell, and the protective shell is located on one side of the mutual inductor, and a first wire passing slot is provided on the side of the protective shell close to the mutual inductor, and a second wire passing slot corresponding to the wire outlet slot is provided on the bottom surface of the protective shell. The advantage is that the protective shell has a sealing and protective effect on the circuit board, reduces the impact of the environment on the circuit board, and avoids damage to the circuit board. At the same time, a plurality of independent linear wiring slot structures are provided at the bottom of the base, so that the sampling lines are separated from each other to avoid crossing, and effectively reduce the damage caused by the sampling lines.

This utility model discloses a pull-wire structure for a medical catheter, including a pull-wire frame, multiple sets of guide roller mechanisms, a roller body clamping mechanism, and a stabilizing mechanism. The multiple sets of guide roller mechanisms include a rotating frame and a bottom roller. The roller body clamping mechanism includes a clamping tube and a clamping rod. The stabilizing mechanism includes a bottom ball ring and a connecting plate. Through the coordinated action of the rotating frame, bottom roller, rotating roller, and fixed roller, precise positioning and tension control of the medical catheter are achieved. The rotating frame is symmetrically installed on both sides of the pull-wire frame and can be rotated and adjusted. It works with a limiting turntable to limit the rotation range and prevent excessive deformation of the catheter. The roller body clamping mechanism adopts a clamping tube and clamping rod design, which realizes quick and convenient installation and disassembly. The combination of the rotating sleeve, the rotating insert block, and the rotating push spring forms a self-locking mechanism. The rotating push spring pushes the rotating insert block into the groove on the side wall of the clamping rod to ensure a firm connection. The clamping rod can pass through different adjustment holes, providing multiple installation position options and enhancing the adaptability of the device.

The utility model discloses a novel lamp bead with a built-in IC (integrated circuit) and a conductive platform, which relates to the technical field of LEDs (light-emitting diodes) and comprises a support body, an embedding groove is arranged at the top of the support body, and a first conductive pad, a second conductive pad, a third conductive pad and a fourth conductive pad are respectively mounted at four corners inside the embedding groove. An IC wafer is welded to the top of the first conductive pad, two sets of IC electrodes are arranged on the IC wafer, and a conductive platform and a chip are welded to the top of the third conductive pad. According to the utility model, through arranging the conductive platform, the conductive platform can be used as a middle connection point for concentrated wire welding, a plurality of wires are concentrated to a single connection point, and then the conductive platform is connected to a chip through one wire, so that the number of times of directly welding a chip electrode can be reduced, the wire welding difficulty is reduced, and multiple wire welding of the same electrode is avoided; the risk of poor bonding wires is reduced, and the stability and yield of products are improved.

The utility model provides an electric filament dividing machine. The electric filament dividing machine comprises a base, a cover body assembly and a driving assembly. A working cavity is formed in the base, and a plurality of first yarn separating protrusions are arranged at the bottom of the working cavity. The cover body assembly comprises a cover body and a filament separating rotary disc. The cover body covers the working cavity, and a through hole is formed in the cover body. The yarn dividing rotary disc is located in the working cavity and comprises a disc body and a plurality of second yarn dividing protrusions arranged on the disc body, the disc body is installed between the cover body and the base, each second yarn dividing protrusion is arranged on the side, facing the base, of the disc body, the multiple first yarn dividing protrusions and the multiple second yarn dividing protrusions are arranged in a staggered mode, and a connecting part is arranged on the other side of the disc body; the connecting part penetrates through the through hole and is rotationally arranged relative to the cover body. The driving assembly comprises a driving motor and a shaft connecting assembly, the driving motor is installed on the cover body, the shaft connecting assembly is arranged on a power output shaft of the driving motor in a sleeving mode, the shaft connecting assembly is arranged in the through hole in a penetrating mode, and the shaft connecting assembly is connected to the connecting part in an inserted mode so as to drive the yarn dividing rotary disc to rotate relative to the base.

The utility model relates to the technical field of medical instruments, and provides a medical scanning auxiliary pad and scanning equipment. The pad body is provided with a first containing groove and an isolation protrusion. The isolation protrusion corresponds to the first containing groove in position in the first direction. The medical scanning auxiliary pad integrates the functions of the head pad, the arm supporting pad and the knee joint supporting pad, can meet the requirement for positioning adjustment when the chest and abdomen, the lumbar vertebra, the pelvic cavity, the legs and other parts are scanned, and is diversified in function and high in flexibility.

The invention belongs to the technical field of petroleum geophysical exploration, and relates to an overlapped meshless undulating surface seismic wave field numerical simulation method and system. The method comprises the following steps: establishing an undulating surface seismic wave speed model and an absorption attenuation Q model based on geological parameters of an exploration area; based on the undulating surface seismic wave speed model and the absorption attenuation Q model, adopting an overlapping meshless node subdivision method to obtain a node data set of an overlapping region; taking the node data set as input, expanding a radial basis function based on a Chebyshev polynomial and forming a difference matrix, and solving to obtain a node difference coefficient set; and taking the node data set and the node difference coefficient set as input, performing finite difference discretization on a Kelvin-Voigt model-based viscous-acoustic wave equation based on a radial basis function, implementing forward continuation of the wave field, and completing the seismic wave field numerical simulation of the overlapped meshless undulating surface. According to the method, the constant Q model is accurately described, amplitude-phase decoupling is realized, and the absorption attenuation effect of the medium can be effectively described.

The utility model discloses precious metal recovery dust removal equipment, and relates to the technical field of dust removal equipment, the precious metal recovery dust removal equipment comprises a suction fan, a dust removal pipeline is arranged at the end part of the suction fan, a collection mechanism is arranged on the dust removal pipeline, and the collection mechanism comprises a collection box which is arranged at the bottom of the dust removal pipeline and is used for collecting dust; the filter screen is fixedly connected to the top of the collecting box, and the filter screen is used for filtering dust; the sealing assembly is arranged on the side edge of the filter screen, and the sealing assembly is used for sealing a gap between the filter screen and the dust removal pipeline; and the connecting assembly is arranged between the collecting box and the dust removal pipeline, and the connecting assembly is used for being connected with the collecting box. By arranging the collecting mechanism, dust and precious metal particles thereof can be conveniently collected into the collecting box through the cooperation of the inverted U-shaped dust removal pipeline and the filter screen, and meanwhile the collecting box can be conveniently taken down through the connecting assembly to recycle the precious metal particles in the later period.

The present invention relates to the technical field of spraying devices, and specifically discloses a box girder spraying equipment and process, the device comprising: a box body, a driving component, a spraying module, and a limiting component; the driving component is vertically spaced on the box body, the spraying modules are spaced on the box body and correspond to the driving component one by one, the driving component can drive the spraying module to move, and the spraying module is provided with a first push rod and a second push rod arranged along the upper and lower sides, the first push rod and the second push rod are used to contact the box girder to be sprayed surface, the limiting component is arranged on both sides of the spraying module, and is used to limit the spraying angle after the spraying module is adjusted. In the box girder spraying equipment and process of the present invention, the first push rod and the second push rod contact the spraying surface of the special-shaped box girder in turn, so that the spraying module can be positioned and the angle adjusted according to the special-shaped box girder, and at the same time the spraying module can be consistent with the spraying surface, so that the spraying effect is more uniform.