155results about How to "Guaranteed stable work" patented technology

The invention discloses a temporary drainage pipeline for pavement construction, and relates to the technical field of drainage pipelines.The temporary drainage pipeline for pavement construction comprises a tank body, a motor is fixedly installed at the bottom of the tank body, a drainage pipe fixedly penetrates through the surface of the tank body, and a leakage cylinder is fixedly installed on the inner wall of the tank body; a guide filter plate is fixedly mounted on the inner wall of the tank body, a rotating shaft is fixedly mounted at the output end of the motor, the filter device comprises a fixing ring, a fixing rod, a roller, a scraper blade, a filter box, a fixing frame, a first telescopic elastic rod and a convex disc, and the scraper blade is fixedly mounted on the circumferential surface of the fixing rod. According to the temporary drainage pipeline for pavement construction, the rotating shaft rotates to drive the fixing ring to rotate, meanwhile, the fixing ring rotates to drive the fixing rod to rotate, the fixing rod rotates to drive the scraping plate to rotate, and the scraping plate rotates to scrape impurities on the surface of the filter box, so that the situation that too many impurities are accumulated on the surface of the filter box to block a water outlet of the filter box is avoided; therefore, the passing speed of water flow is influenced.

The invention discloses a method for adjusting a power mode based on working condition changes. The method comprises the steps that key data in the running process of a vehicle are collected in real time; determining a vehicle working condition of the vehicle based on the key data; determining a target power mode of the vehicle based on the vehicle working condition; and the change condition of the vehicle working condition is monitored in real time, and the operation is executed again in response to the situation that the change condition meets a preset condition, so that the target power mode is updated. The method can improve the operation efficiency, reduce the energy consumption and enhance the applicability.

The utility model discloses a cooling device for plastic production, belongs to the technical field of plastic production, and aims to enable cold air at a refrigeration sheet to blow to a plastic strip, so that the plastic strip is subjected to primary cooling treatment, liquid can be sprayed to the whole plastic strip, and the plastic strip is subjected to secondary cooling treatment. The plastic production cooling device comprises a bearing table, a cooling box is installed at the middle section of the top of the bearing table, and the two ends of the cooling box are communicated; the cooling box is formed by hinging two fixing boxes through a hinge, the cooling box is divided into a first cooling cavity and a second cooling cavity through a barrier plate, refrigeration pieces are embedded and installed at the top, corresponding to the first cooling cavity, of the cooling box at equal intervals, an air guide barrel is fixed to the refrigeration pieces, a fixing frame is fixed to the air guide barrel, and an air guide wheel is rotationally arranged on the fixing frame; and air guide grooves are formed in the bottom, corresponding to the first cooling cavity, of the cooling box at equal intervals, bearing frames with nozzles are fixed to the top, corresponding to the second cooling cavity, of the cooling box at equal intervals, and a drainage pipe is arranged at the bottom of the cooling box.

The invention discloses random sampling quality detection equipment for milk powder production, and relates to the technical field of milk powder detection.The quality detection equipment comprises a pretreatment device and a gas chromatograph, the pretreatment device comprises a machine body, a shaking device and a water bath distillation box are arranged in the machine body, and a first treatment bottle is arranged on the shaking device; compared with existing milk powder quality detection equipment, the milk powder quality detection equipment is provided with the pretreatment device, on one hand, the pouring amount of a milk powder sample can be effectively controlled through the pretreatment device, and on the other hand, the milk powder sample can be conveniently taken out; on the other hand, the purpose of automatically treating the milk powder samples can be achieved, the situation that workers need to frequently pour and take the milk powder samples when the batches of milk powder are large is avoided, and therefore the risk that the milk powder samples are polluted is reduced.

The invention discloses a PVDF recovery coupled wastewater treatment process. Waste liquid generated during PVDF recovery flows through a membrane pool and a treatment pool in sequence. A first driving pump drives a first ultrafine bubble generator to work. Ultrafine bubbles are generated at the outlet of the first ultrafine bubble generator. The ultrafine bubbles absorb PVDF particles in the waste liquid and float upward. The waste liquid in the membrane pool passes through a filtering flat membrane and enters the treatment pool. During the process of the waste liquid flowing through the treatment pool, a second driving pump arranged in the treatment pool drives a second ultrafine bubble generator to work. Ozone is introduced into an air inlet of the second ultrafine bubble generator. Ultrafine bubbles containing ozone are generated at the outlet of the second ultrafine bubble generator. The wastewater is treated by ozone and hydroxyl radicals generated by the collapse of the ultrafine bubbles.

The invention relates to the technical field of nodular cast iron production, in particular to iron casting equipment spheroidizing through magnesium metal blocks and a spheroidizing method.The iron casting equipment comprises a supporting table, a workbench is arranged at the top of the supporting table, a supporting plate is fixedly connected to the top of the workbench, and a dust removal structure is arranged at the bottom of the supporting plate; a storage box, a robot and a master console are arranged on the surface of the workbench, a sealing thrust structure is arranged at the top of the supporting table, a sealing spheroidizing structure and a sealing structure are arranged at the bottom of the supporting plate, a ladle transport vehicle is arranged on the surface of the sealing thrust structure, and a ladle barrel is detachably installed on the surface of the ladle transport vehicle. The first air cylinder is started to lift the pushing plate, and meanwhile, the ladle transport vehicle and the ladle barrel are lifted, so that the ladle barrel is in contact with and covers the pressure detection head and is in contact with the sealing strip for sealing, and the volatilization loss of a metal magnesium block in the reaction process is reduced when the ladle barrel is subjected to subsequent spheroidizing; and the splashing phenomenon generated during the reaction can be prevented.

The invention discloses an automatic clamping device and method for parallel grafting of multiple solanaceae vegetable plants, and belongs to the field of agricultural machinery. The device comprises a clamping mechanism installed on a clamping Y-axis direction double-axis sliding table and a seedling gathering limiting mechanism installed on a seedling gathering Y-axis direction double-axis sliding table. The clamping mechanism is used for clamping the material clamp single bodies and expanding the material clamp single bodies, and then the expanded material clamp single bodies are conveyed to the upper clamping position for upper clamping operation; and the seedling gathering and limiting mechanism is used for gathering the accurately cut scion seedlings and stock seedlings to a clamping range position, and plays a limiting role in the clamping process. According to actual production requirements, the mechanical structure is simplified, and the clamping efficiency and the clamping success rate of solanaceae vegetable grafting operation are greatly improved; the method has the advantages of reducing grafting operation difficulty, reducing operation cost and being easy to operate.

The invention discloses a mountain tunnel arch frame mounting device which comprises a frame vehicle, a screw rod is rotatably mounted at the bottom of the side end face of the frame vehicle, a base is mounted on the outer side of the screw rod through threads, a position adjusting seat is rotatably mounted on one side of the top end of the base, a machine base is slidably mounted at the top of the position adjusting seat, and guide rails are symmetrically mounted on the side end face of the position adjusting seat. According to the device, gravity can be converted into driving force, energy consumption in the arch frame installation process is reduced, the energy-saving and environment-friendly performance of the device is improved, the flexibility of installation work is improved, double alignment correction can be conducted on a side arch and an arc-shaped arch frame, and the device has the advantages of being simple in structure, convenient to use and high in practicability. The alignment accuracy and the fitting property with the side wall of the tunnel are improved, so that the assembling and connecting work of the side arch and the arc-shaped arch frame is more efficient, convenient and flexible, the safety and reliability of arch frame installation are fully improved, and the supporting effectiveness of the arch frame is improved.

The invention discloses a nursing method before and after artificial spawning induction of parent mandarin fish, which comprises the following steps: nursing after collection of wild mandarin fish: selecting healthy, disease-free and residue-free fish, carrying out aeration transfer with water in a sorting box, controlling the temperature difference between water temperatures before and after transfer not to exceed 5 DEG C, soaking in a bag for over-temperature, soaking in saline water, and putting the wild mandarin fish into a 1: 1 filtered circulating water system; the steps of disinfection, pest killing, sterilization and bacteriostasis are alternately carried out, the ingestion condition, the swimming capacity and the clustering condition of the mandarin fish are observed, sampling microscopic examination observation is carried out, and if all conditions are normal and do not have parasitic diseases or bacterial infection, nursing work after the wild mandarin fish is collected is completed. The method further comprises the steps of prenatal breeding of mandarin fish, spawning induction, egg squeezing, postnatal breeding of parent fish and disease control, the survival rate of the wild mandarin fish after collection is improved in multiple aspects, breed conservation and breeding work of the wild mandarin fish is facilitated, the survival rate of the parent fish of the mandarin fish reaches 80% or above, and the method plays an important role in breeding of excellent new varieties which grow fast and are high in stress resistance.

The utility model discloses high-quality non-woven fabric cleaning equipment, and belongs to the field of non-woven fabric cleaning. Comprising a cleaning box, the cleaning box is sequentially provided with a cleaning cavity, an extrusion cavity and a drying cavity from left to right, a first conduction groove is formed between the cleaning cavity and the extrusion cavity, a second conduction groove is formed between the extrusion cavity and the drying cavity, blowing barrels are symmetrically and rotationally arranged in the extrusion cavity, and embedded rings are arranged at the two ends of each blowing barrel in a protruding mode; and the embedded ring is rotationally embedded in the cleaning box, a conduction nozzle is rotationally embedded in one end of the blowing cylinder and communicates with the air pump through a guide pipe, and a pressing assembly is installed in the first conduction groove. The high-quality non-woven fabric cleaning equipment has the beneficial effect that the high-quality non-woven fabric cleaning equipment is provided. By performing auxiliary extrusion and blowing treatment on the cleaned non-woven fabric, the cleaned non-woven fabric can be subjected to preliminary dehydration treatment, so that the non-woven fabric can be stably dried after being heated and dried subsequently, and the subsequent work can be smoothly performed.

The invention discloses a mold for forming a combination of a double-guide inclined slider and a tunnel slider, and belongs to the field of thermoplastic plastic molding molds. The mold realizes the linear motion of the hook leg 23 through the elastic force of the spring A24 and the friction force of the damping pin, and prompts the slider core 27 to make a lateral linear motion through the elastic force of the spring B28 to disengage from the first undercut of the plastic product. The inclined slider A14 and the inclined slider B15 are pushed by the ejection rod A18 and the ejection rod B19, and the inclined slider A14 and the inclined slider B15 slide obliquely under the guidance of the double guide rails provided on the inclined slider A14 and the inclined slider B15 to disengage from the second undercut of the plastic product, thereby solving the problem in the molding of plastic products with undercuts, and is particularly suitable for the situation where the undercut of the plastic product is in the deep cavity of the injection mold, saving the mold cost, simplifying the mold structure, working smoothly and reliably, effectively utilizing the mold space, and improving the production efficiency.

The application discloses a controlled current source system applied to temperature regulation, which comprises a signal processing and TEC temperature control board, an input EMC processing and rectification filtering part, an H-bridge power conversion part, an inductor and transformer part, an output rectification filtering part, a heating and refrigeration reversing part, a voltage and current sampling part and a low-voltage power supply part. After three-phase alternating current is subjected to input EMC processing and rectification filtering, direct current voltage is formed and is added to the H-bridge power conversion circuit. The H-bridge circuit is driven by a PWM wave with a set duty ratio, and is output to the inductor and transformer power part. The transformer is output to the rectification filtering circuit, expected current output is generated, the size of the current is automatically adjusted according to the result of the control link, and the current output direction is adjusted through the heating and refrigeration reversing circuit, so that the bidirectional switching of refrigeration and heating is realized. The application is based on the electrical layout of EMC, heat dissipation and optimal function link, and can realize smaller volume, stronger output, higher precision and higher intelligence.

The utility model relates to the technical field of door products, in particular to a sliding door which comprises a door frame, a hanger rail mechanism installed through the door frame, a door leaf installed through the hanger rail mechanism and a ground guide mechanism, the ground guide mechanism comprises at least two horizontal guide wheels, and wheel shafts of the horizontal guide wheels are fixed to the ground; a guide groove is formed in the bottom face of a lower stile of the door leaf, the guide groove has a certain length in the moving direction of the door leaf, and the inner wall faces of the two side walls of the guide groove abut against the two horizontal guide wheels respectively. According to the sliding door adopting the technical scheme, on the premise that the advantages of the hanger rail type sliding door are not affected, the problem that the door leaf is prone to shaking in the moving process of the hanger rail type sliding door is solved, the hanger rail mechanism keeps working smoothly, the problems of jamming, noise, loosening and the like are solved, and the hanger rail mechanism is simple in structure, light in self weight, convenient to use and high in practicability. And the sinking problem is avoided.

The cloth dragging wheel mechanism for the sewing machine comprises an installation plate, a cloth dragging wheel and a connecting rod mechanism, a driving shaft is arranged on the installation plate, the connecting rod mechanism comprises an output rod, a connecting rod and an executing rod which are sequentially connected, a transmission cam is fixedly arranged on the driving shaft, the output rod is rotationally connected with the transmission cam, and the executing rod is connected with the output rod. The mop device is characterized in that the connecting rod mechanism comprises a connecting node located between the output rod and the connecting rod, a control mechanism eccentrically arranged with the connecting node is arranged on the mounting plate, a driving rod rotationally connected with the connecting node is arranged on the control mechanism, and the driving rod is connected with the connecting node through a one-way bearing. The control mechanism can control the driving rod to rotate so as to change the position of the connecting node; and the control mechanism has a locking function. The problem that the length of a connecting rod of an existing cloth dragging wheel needs to be manually adjusted to meet the production requirement, and consequently the production efficiency is affected is solved.

This invention belongs to the field of multi-stage treatment of textile wastewater, specifically a high-efficiency and energy-saving textile wastewater treatment device. It includes an equalization tank with a wastewater pipe located at the rear end of the equalization tank. Two separation tanks are formed inside the equalization tank and connected by multiple connecting pipes. A rotating stirring platform is located at the bottom inner side of each separation tank, and multiple fan blades are fixed to the outer side of the stirring platform. A dissolved air flotation module is installed at the front end of the equalization tank. This design not only achieves multi-stage treatment of wastewater but also effectively adapts to the treatment process of multiple batches of different textile wastewater. It ensures that the pollution level of the wastewater injected into the treatment equipment is the same each time, allowing subsequent treatment devices to operate smoothly. Furthermore, it controls the wastewater discharge into subsequent equipment at a constant rate, reducing the problem of excessive load on the treatment device when the water volume is high.

The invention discloses a spherical polishing device for the end of an LED street lamp pole, which relates to the field of mechanical manufacturing technology and comprises: a base; a clamping assembly, the bottom of the clamping assembly is slidably connected to the inner wall of the top of the base; a collecting assembly, the top of the collecting assembly is fixedly connected to the inner wall of the base; a supporting assembly, the bottom of the supporting assembly is fixedly connected to the outer wall of the base; a fixing plate, the outer wall of the fixing plate is rotatably connected to the top of the supporting assembly through a hinge; an extruding assembly, the outer wall of the extruding assembly is fixedly connected to the inner wall of the fixing plate; a lifting assembly, the bottom of the lifting assembly is fixedly connected to the inner wall of the base; the device is provided with a clamping assembly, through the cooperation of a main clamping plate and a sub-clamping plate, and the action of a rolling ball and a suction cup, so as to firmly clamp spheres of different sizes at the end of the lamp pole, ensure that the spheres are stable and do not shake during the polishing process, and lay a foundation for efficient polishing.

The utility model belongs to the pellet technical field, concretely relates to a finished product metal pellet's screening device. Including fixed frame, fixed frame inside fixed mounting has the fixed frame, the fixed frame all even insert joint connection has a plurality of collection frame, the fixed frame on the corresponding collection frame is equipped with high -efficient screening mechanism, the fixed frame is equipped with high -efficient anti -blockking unloading mechanism. The utility model discloses through the structure improvement and optimization, through the symmetrical parallel placement's conical drum, can effectively realize the screening of the pellet of different size, and fall into the corresponding size range's collection frame, the overall screening is more refined, is favorable for improving the efficiency of the later firing, through the design of vibration motor, also can make the overall work more smooth, reduces the probability of appearing the block.

The invention relates to a flood-proof drainage system driven by a mining explosion-proof motor and a leakproofness detection method thereof. When running in a dry environment, the main drainage pump runs in a dry mode, and the functions of the main drainage pump are the same as those of a mine main drainage system; when the mining anti-explosion dry-type motor is submerged, the waterproof sleeve is subjected to first-layer sealing, the oil chamber is subjected to second-layer sealing, an outer-static and inner-dynamic multi-sealing structure is formed, and reliable operation of a unit in a diving state is guaranteed. Besides, both the interior of the waterproof sleeve and the interior of the oil chamber have a pressure monitoring function and a pressure adjusting function, the internal pressure of the waterproof sleeve and the internal pressure of the oil chamber are monitored in real time, liquid supplementing or air supplementing pressurization is carried out, dynamic air supplementing and air-liquid pressure self-balance of a motor cavity are achieved, the pressure difference between the two sides of a static seal or a dynamic seal is eliminated, the sealing service life is prolonged, and the sealing performance is improved. Reliable operation of the motor in a deep diving state is ensured, and normal starting of the unit during disaster relief, drainage and mine recovery is ensured. The leakproofness detection method of the flood-proof drainage system is simple and safe to operate.

This utility model relates to the technical field of measurement in the production of smooth aluminum sleeves, and discloses a device for comparing and measuring the outer diameter of smooth aluminum sleeves and wrinkled aluminum sleeves. The device includes a support assembly, characterized in that: lifting and adjusting components are fixedly installed on both sides of the top of the support assembly, and a lifting and measuring component is fixedly installed in the middle of the top of the support assembly; simultaneously, rotating components are fixedly installed on both sides of the top of the support assembly; and limiting clamping components are fixedly installed on the outer side of the lifting and adjusting components. Two sets of limiting clamping components are provided, and their positions are opposite to each other. By installing limiting clamping components on the device, this utility model allows for proper fixation during measurement, facilitating smoother measurement work.

The invention discloses an ice hole repairing device for fishing or catching fish under ice. When it is necessary to cut and grind the sharp corner or edge of the bottom of the ice hole, the power driving device at the top of the middle tube (3) drives the middle tube (3) to rotate. The rotation of the middle tube (3) causes a plurality of reaming tools to be thrown outward under the action of centrifugal force. After the reaming tools are thrown outward, they are distributed in an umbrella shape between the mounting plate (15). After the plurality of reaming tools are spread out, the sharp corner or edge of the bottom of the ice hole is cut and grinded to form a chamfer. After the operation is completed, the power driving device is turned off and removed, the middle tube (3) stops rotating, and the plurality of reaming tools are turned down around the mounting plate (15) and closed with the middle tube (3). The invention can prevent fish from leaking out due to the fishing net or fishing line being cut by ice, thereby ensuring the normal operation of ice fishing or catching fish.

The basement high-pressure grouting equipment disclosed by the application relates to a basement high-pressure grouting equipment, which comprises a machine body, a grouting pump, a pressurizing pump, a first storage pump, a first mounting plate, a moving assembly, a limiting plate, an adjusting mechanism and an auxiliary supporting mechanism. The second storage pump is additionally arranged on the basis of the first storage pump to store materials and discharge the materials through the pressurizing pump. The discharge direction of the discharge pipe can be adjusted according to different construction directions through the setting of the rotating disc and the sleeve assembly. The discharge pipe is flexibly turned through the universal pipe. The limiting plate and the discharge pipe thereon are moved through the forward and reverse rotation of the motor, the driving of the gear by the rack, the sliding of the first sliding bar and the sliding of the sliding block, so that the effect of adjusting the position of the shotcreting is achieved. The first sliding bar is guided to move through the guide strip, the stability and smoothness of the sliding process are increased, the stability of the working process of the discharge pipe is improved, and the effect of uniform and stable discharge is finally achieved.

The utility model relates to a high -efficient film stripping device for circuit board etching, the upper portion of film stripping equipment is equipped with the spraying equipment for carrying out the spraying to circuit board substrate surface dry film, one side of spraying equipment is provided with the fixed frame that is fixedly connected with film stripping equipment, the inside fixed frame is equipped with the impurity removal mechanism for to film slag after falling processing, one side of impurity removal mechanism is provided with the secondary spraying mechanism for processing circuit board substrate again with fixed frame is fixedly connected, compared with prior art, the utility model has the beneficial effect that: through setting up the impurity removal mechanism in the upper portion of the conveying wheel, and the suction end of impurity removal mechanism stretches to between the conveying wheel, through starting the suction equipment, the film body after separation will enter the inside air inlet pipe through the suction nozzle, then through the guide cylinder and enter the inside sliding frame, realize the concentrated collection of film body, avoid the film body that separates from the membrane body influence the membrane body's demoulding work of subsequent, realize efficient demoulding work.

The invention discloses hot kiln equipment for microcellular foam ceramic processing, and belongs to the technical field of microcellular foam ceramics, the hot kiln equipment comprises a main body module and a continuous loading module, the main body module comprises a base plate, and the top of the base plate is fixedly connected with a hot kiln main body, a loading and unloading table and two sliding rails; a hot kiln door plate is slidably connected between the two sliding rails, a loading and unloading opening is formed in the hot kiln door plate in a penetrating mode, and through arrangement of a U-shaped plate, a metal ceramic containing plate, a step-by-step lifting assembly, an intermittent transmission assembly, a reciprocating boosting assembly and a pushing assembly, when the equipment is used, the hot kiln door plate can be conveniently loaded and unloaded; according to the feeding device, the microporous foam ceramic tiles can be conveniently fed at different heights, so that the space in the hot kiln main body is fully utilized, the waste of space resources is avoided, continuous and rapid feeding can be carried out, the feeding efficiency is improved, and the safety problem caused by the fact that workers use a herringbone ladder for feeding is also solved.

The utility model belongs to the technical field of spraying, and particularly relates to an atomizing device with an upper-stage nozzle structure and a lower-stage nozzle structure. The outer side wall of the storage tank is communicated with an upper-stage nozzle; a lower-stage nozzle is arranged on the outer side wall of the storage tank; a supporting plate is fixedly connected to the outer side wall of the storage tank; the top of the supporting plate is fixedly connected with a servo motor. The output end of the servo motor is fixedly connected with a rotating rod; during working, a threaded rod is rotated, one side of a first cleaning brush stops rotating when rotating to be attached to the surfaces of an upper-stage nozzle and a lower-stage nozzle, at the moment, a servo motor is started to drive a rotating rod to rotate, and due to the fact that a first belt wheel is connected with the rotating rod and a connecting block, in the rotating process of the rotating rod, the first belt wheel is driven to rotate; the first belt wheel, the connecting block and the first cleaning brush can be driven to rotate together, and dust and impurities adhered to the surfaces of the upper-stage nozzle and the lower-stage nozzle can be cleaned in the rotating process of the first cleaning brush, so that the cleanliness of the surfaces of the upper-stage nozzle and the lower-stage nozzle is improved.

The utility model discloses a charging pile circuit board with protection performance, which relates to the technical field of charging piles and comprises an installation box, first ventilation openings are formed in the outer walls of the two sides of the installation box, a top cover is arranged at the top of the installation box, second ventilation openings are formed in the outer wall of the top cover, and filter screens are arranged in the first ventilation openings and the second ventilation openings. Mounting holes are formed in four corners of one side, away from the top cover, of the mounting box; an air suction mechanism is arranged in the center of the inner wall of the bottom of the mounting box and used for absorbing heat emitted by the circuit board; buffer mechanisms are arranged at the four corners of the inner wall of the bottom of the mounting box, independent heat dissipation measures for the circuit board can be achieved through a fan, an air suction pipe, an exhaust pipe, a temperature sensor and the like, and the situation that due to long-time high-temperature work of the circuit board, elements on the circuit board are aged and fail is avoided; therefore, the use performance of the circuit board is stabilized, the performance of the charging pile is more stable, and the service life of the charging pile is prolonged.

The utility model discloses a fixing mechanism for installing a double-bundle transmission conductor spacer, which comprises an object carrying platform and two pairs of vertical supporting columns symmetrically positioned on two sides of the object carrying platform, and a lifting cross beam capable of moving up and down is erected between each pair of vertical supporting columns. A hook clamping part and a bolt part positioned on one side of the hook clamping part are arranged on the lifting cross beam; the hook clamping part is installed on the lifting cross beam through a clamp base, two gears A meshed with each other are obliquely arranged at the upper end of the clamp base, the two gears A are symmetrically connected with two L-shaped clamping rods with the inward clamping direction through the two gear shafts respectively, a steering engine is installed on the clamp base, an output shaft of the steering engine is connected with a gear B, and the gear B is connected with the lifting cross beam. The gear B is meshed with one of the gears A. A push rod motor is arranged at the lower end of the clamp base, and a push rod of the push rod motor is located below the center shafts of the two gears A and is arranged obliquely upwards. The utility model has the advantages that the temporary spacing effect of the spacer is better, and the insertion work of the bolt is more normal and smoother.

The utility model provides an exemption-level while-drilling natural gamma and energy spectrometer graduator, which belongs to the technical field of underground geological mineral exploration and detection equipment and comprises a film for an energy spectrometer, the film for the energy spectrometer is prepared by mixing natural radiation raw materials and adhesives, and the proportion of the natural radiation raw materials and the adhesives can be adjusted according to requirements. The natural radiation raw materials comprise natural uranium-containing rock powder and natural thorium-containing rock powder, and the ratio of uranium in the natural uranium-containing rock powder to thorium in the natural thorium-containing rock powder is 2: 1. The exempt-level while-drilling natural gamma and energy spectrometer film does not belong to a radioactive source, and the radiation level belongs to an exempt level; the radiation spectrum is highly similar to the spectrum of radium 226, radon gas harmful to people is not generated in the storage state, an existing radioactive source radium 226 can be replaced, use is safe, and the while-drilling natural gamma and energy spectrum instrument can work under the uniform and stable working condition.

The utility model relates to the technical field of municipal drainage pipeline installation, and discloses a municipal drainage pipeline alignment traction device which comprises a supporting frame, a double-winding-drum winch is arranged on the supporting frame, and a positioning plate is arranged on the portion, on one side of the double-winding-drum winch, of the supporting frame in a liftable mode. A traction frame is connected to the end of a steel wire rope on the double-winding-drum winch, the size of the traction frame is adjustable, and a positioning clamping plate is arranged at the end, close to the double-winding-drum winch, of the traction frame. According to the utility model, the labor load of personnel can be effectively reduced, and the construction efficiency is improved; and meanwhile, the using amount of large machines is reduced, and safe, efficient and high-quality municipal drainage pipeline assembly construction is achieved.

The utility model discloses a duplicate gear grinding device which comprises a base (1), a grinding wheel (2), a grinding motor (3) and a positioning seat (4), a liquid collecting tank (5) is arranged between the grinding wheel (2) and the positioning seat (4), a filter screen (6) and a scraper (7) are arranged in the liquid collecting tank (5), and one end of the scraper (7) is connected with a driving device. A portal frame (8) is arranged above the liquid collecting tank (5), and a spraying head (9) is mounted on the portal frame (8); a liquid supply tank (10) located on one side face of the base (1) is connected to the spraying head (9), and the liquid supply tank (10) is communicated with the liquid collecting tank (5); and the positioning seat (4) is connected with a translation device for driving the positioning seat (4) to move. The grinding device not only can improve the working efficiency, but also has the advantages of being low in grinding cost, convenient to clean and use, long in service life, good in grinding effect, high in structural stability and wide in application range.

The present invention discloses a non-destructive installation process for a mine screening machine screen, and belongs to the technical field of screen installation. The non-destructive installation process for a mine screening machine screen comprises the following steps: clamping a plurality of clamping strips on a crossbeam, wherein the distance between two adjacent clamping strips matches the width of the screen to be installed; each clamping strip is clamped with a skeleton; a rubber strip is clamped in a groove on the skeleton; two adjacent skeletons clamp the two ends of the same screen; if there are brackets and rubber strips on the crossbeam, the brackets and rubber strips are removed. The non-destructive installation process for a mine screening machine screen of the present invention can quickly install screens of various specifications, and does not require re-welding of the bracket, and will not damage the structural strength of the original bracket, wherein the skeleton is perpendicular to the direction of the original crossbeam, thereby increasing the friction between the two, avoiding relative sliding between the skeleton and the crossbeam, and ensuring the stable operation of the equipment.