28results about How to "Simple structure and process" patented technology

The invention relates to a corrosion-resistant flame-retardant cable and a preparation method thereof, and belongs to the technical field of special flame-retardant cables. The cable is composed of a bunched wire core and a protective sleeve on the surface, and the protective sleeve is prepared from, by weight, 100 parts of PVC resin, 10-15 parts of POE resin, 12-16 parts of insulating filler, 25-30 parts of flexibilizer, 4.8-5.5 parts of stabilizer, 9-13 parts of modified phosphorus-silicon flame retardant, 0.13-0.16 part of antioxidant and 4.5-5.8 parts of lubricant. The modified phosphorus-silicon flame retardant is substituted by hydroxyl single-terminated silicone oil and vinyl trichlorosilane to form a compound with multiple silicon chains and alkenyl, namely an intermediate, DOPO and the alkenyl on an intermediate molecule are subjected to addition, DOPO serving as a phosphorus flame-retardant material is grafted to the intermediate molecule, a large number of silicon chain-DOPO-PVC layered structures are formed in the near surface layer of the protective sleeve, and the flame-retardant protective sleeve is formed. And the shielding, corrosion-resistant and flame-retardant effects are achieved.

The utility model provides equipment for sewing four edges of a throw pillow case. The equipment comprises a cloth feeding mechanism, a short edge sewing mechanism, a cutting mechanism and a long edge sewing mechanism, the cloth feeding mechanism comprises a first cloth placing frame, a second cloth placing frame and a cloth overlapping module; the short edge sewing module comprises two first sewing machines and two second sewing machines; the cutting mechanism comprises a cloth pulling frame and a cutting knife, and the cloth pulling frame comprises a movable cloth pulling clamp; the long edge sewing mechanism comprises a platform, a movable cloth moving rod is arranged above the platform, and third sewing machines are arranged at the two ends of the platform. Two rolls of cloth are placed on the first cloth placing frame and the second cloth placing frame respectively and overlapped through the cloth overlapping module. Cloth is sewn on the two sides through the two first sewing machines, then the two sides of the cloth are sewn towards the middle by a certain distance through the two second sewing machines, then the cloth is moved to the platform through the cloth pulling clamp to be cut, finally, the cloth is pushed by the cloth moving rod to be pressed and fixed towards the cloth pressing rods on the two sides, the bolster sleeve is formed through sewing of the third sewing machine, and the overall equipment structure and the manufacturing process are simple.

The embodiment of the invention relates to the field of electrolysis, and provides an isolating membrane, a preparation method thereof and an alkaline electrolysis device. The isolating membrane comprises a supporting layer, a functional layer is arranged on the surface of the supporting layer, and the functional layer is partially embedded into the supporting layer; the porosity of the functional layer is 53%-65%, the average pore size of pores in the functional layer is 50-110 nm, and the average pore size of pores in the supporting layer is larger than the average pore size of pores in the functional layer; the functional layer comprises an inorganic hydrophilic filler and a polymer matrix, and the D50 particle size of the inorganic hydrophilic filler is 0.3-1.5 [mu] m. The isolating membrane in the embodiment of the invention at least has good gas barrier property and good ionic conductivity at the same time, so that the alkaline isolating membrane not only has good safety performance, but also is relatively low in energy consumption.

The utility model relates to the technical field of external terminal resistors for automobiles, and discloses a CAN network terminal resistor connector assembly, which comprises a male end connector assembly and a female end connector assembly, the male end connector assembly and the female end connector assembly are connected in a clamping manner, plastic package resin is fixedly connected in the male end connector assembly, and the plastic package resin is fixedly connected in the female end connector assembly. Male end crimping terminals are symmetrically arranged in the plastic package resin; the resistor body and the two male end crimping terminals are in cold crimping connection, the two male end crimping terminals and the resistor body are plastically packaged in the male end plug connector by adopting plastic packaging resin, and after the female end plug connector and the two female end crimping terminals are fixed together, the female end plug connector and the male end plug connector are connected together in a clamping manner, so that the male end crimping terminals and the female end crimping terminals are connected together in a clamping manner. The terminal resistor is simple in design structure and manufacturing process, low in manufacturing cost, long in service life and convenient to install and maintain subsequently.

The utility model relates to medical instrument technical field especially, more particularly to a kind of adapter applied to monitor, including shell, shell is covered with plug, connecting seat and socket connected in sequence, wherein, the front end of plug is provided with two rows of connecting holes, the rear end of plug is equipped with two rows of elastic sheet corresponding with connecting hole and two skeletons for fixing elastic sheet, and skeleton is connected with plug.The elastic sheet is installed in the plug in the application, the connecting hole is corresponding with the elastic sheet, when the adapter is inserted or pulled out from the connector of monitor, the convex needle is contacted or disconnected with the elastic sheet, so that the elastic sheet occurs elastic deformation or rebound movement, the structure and manufacturing process of elastic sheet are simple, and have good elasticity, conductivity and weldability, the production cost is lower, meet the demand of disposable wrapping use.

The utility model discloses a five-pointed star type high-temperature-resistant hydrogen sulfide-resistant screw pump sealing impact device, the main body structure of the five-pointed star type high-temperature-resistant hydrogen sulfide-resistant screw pump sealing impact device is a lower sealing occlusion ring and an upper sealing occlusion ring which are occluded up and down, and the five-pointed star type high-temperature-resistant hydrogen sulfide-resistant screw pump sealing impact device comprises the lower sealing occlusion ring and the upper sealing occlusion ring, a pentagram-shaped occlusion groove is formed in the bottom surface of the upper sealing occlusion ring, the pentagram-shaped occlusion groove and the pentagram-shaped occlusion convex teeth are mutually occluded and clamped, and newly synthesized difluoro vulcanized phenyl silicone rubber is adopted as a main body material. Through the arrangement of the lower sealing occlusion ring and the upper sealing occlusion ring, close fit of the lower sealing occlusion ring and the upper sealing occlusion ring can be achieved, the occlusion surface is of a five-pointed star-shaped three-dimensional structure distributed in the radial direction, the structure has good impact resistance and scouring resistance, the overall structure is simple in process, installation is convenient, the service life is long, and the service life is long. The stable sealing performance of the sealing device in a high-temperature and hydrogen sulfide environment is ensured, and medium leakage is prevented.

The invention discloses a high electron mobility transistor chip and a preparation method thereof, and belongs to the technical field of semiconductors. The high electron mobility transistor chip comprises a substrate, and an alternating polarization layer, a first buffer layer, a second buffer layer, a channel layer, a barrier layer, a super junction layer and a cap layer which are sequentially stacked on the substrate, the alternate polarization layer comprises GaN layers and AlGaN layers which are periodically and alternately stacked to form a superlattice structure; the first buffer layer is a GaN layer; the second buffer layer is a C-doped GaN layer, and the C doping concentration of the second buffer layer is gradually increased along the epitaxial growth direction. According to the embodiment of the invention, the structure process can be effectively simplified, and the preparation cost is reduced.

The invention provides an ultra-wide tuning range narrow-band optical filter utilizing FP cavity high-order harmonics and a design method of the ultra-wide tuning range narrow-band optical filter. The optical filter comprises an input reflecting layer, a composite cavity layer and an output reflecting layer which are stacked in sequence, the composite cavity layer comprises a metal layer and two single-side cavity layers which are arranged on the two sides of the metal layer and are equal in thickness; by adjusting the thickness of the single-side cavity layer, the filtering center wavelength is adjusted; the larger the thickness of the single-side cavity layer is, the larger the filtering center wavelength is. The metal layer is introduced into the middle of the FP cavity of the optical filter, so that a first-order harmonic peak is effectively inhibited, second-order harmonic waves are reserved, and a sideband at a short wave position is reduced, so that the full width of half peak of filtering is reduced, and meanwhile, the working range of the FP optical filter is widened to the range of 550nm-850nm by utilizing high-order resonance. The optical filter is simple in structure process, easy to implement and simple in structure, and the central wavelength of the optical filter can be adjusted only by adjusting the thickness of the silicon dioxide cavity layers adjacent to the two sides of the metal layer.

The invention discloses a symmetrical angle broadband antenna, comprising a radio frequency connector and a radiation plate, wherein the radio frequency connector is fixedly connected to the radiation plate; a broadband impedance matching hole and a broadband radiation angle curve slot are provided on the radiation plate, wherein the broadband radiation angle curve slot comprises a contraction slot bottom, an opening slot, and a first angle curve slot wall and a second angle curve slot wall opposite to each other, wherein the contraction slot bottom passes through the hole wall of the broadband impedance matching hole, and the opening slot passes through one side of the radiation plate, and the area of ​​the opening slot is larger than the area of ​​the contraction slot bottom. The radio frequency signal of the symmetrical angle broadband antenna is transmitted to the radiation plate by the radio frequency connector, and through the tuning of the broadband impedance matching hole, approximately non-reflection radio frequency transmission within a broadband can be achieved; then, the radio frequency signal is successively converted into a spatial electromagnetic wave along the broadband radiation angle curve slot and radiated outward, thereby achieving a broadband and high-gain radiation effect. In addition, the structure and manufacturing process are simple, the cost is low, and the application prospect is broad.

A tracked external rotor magnetic motor utilizing axial closed-circuit and open-circuit magnetic fields is disclosed. An axially magnetized annular planetary permanent magnet attracts the inner edge of a pressure-bearing elliptical steel track, creating two radial magnetic potential angles on the upper and lower sides of the track's inner edge. At the lower angle, the side poles of the annular permanent magnet are attracted by opposite-pole permanent magnets, resulting in a closed magnetic field that eliminates the magnetic force on the track, causing it to follow the magnet's movement. At the upper angle, the side poles of the annular permanent magnet have an open magnetic field, causing the permanent magnet roller to rotate under the radial magnetic potential, driving the output gear ring wheel. This closed-circuit magnetic effect forms the rotational cycle. This device not only increases the output power density but also compensates for the high friction, power loss, and noise associated with planetary rotation mechanisms. It can be widely applied in transportation, energy construction, energy conservation, and environmental protection. Its simple mechanical structure and manufacturing process make it valuable for broad industrial and commercial applications.

The utility model provides a thin meditation seat which comprises a far infrared heating plate, a fence, a bottom sealing plate and a breathable net, the bottom sealing plate and the breathable net are arranged at the two ends of the fence, and a far infrared emitting plate is arranged between the bottom sealing plate and the breathable net; the problem that a meditation seat cannot be heated to improve meditation comfort is solved.

The invention provides a semiconductor device and a manufacturing method thereof. The device comprises a substrate; the first insulating layer is formed on the substrate; a first semiconductor layer formed on the first insulating layer; the side surface of the first semiconductor layer obliquely intersects with the upper surface of the first insulating layer; a second semiconductor layer formed on a side surface of the first semiconductor layer, a third semiconductor layer formed on a side surface of the second semiconductor layer, a fourth semiconductor layer formed on the first to third semiconductor layers, two-dimensional charge carrier gas is formed at the interfaces of the fourth semiconductor layer and the first to third semiconductor layers. One of the following effects of simple device structure, simple process, low cost and excellent electrical performance can be realized.

The embodiment of the application discloses a kind of microfiltration machines, comprising: box, drum assembly, backwashing mechanism and sewage tank, box is divided into water inlet chamber and filter chamber, water inlet and water outlet are provided on the lateral wall of box, water inlet is communicated with water inlet chamber, water outlet is communicated with filter chamber;Drum assembly is rotationally arranged in filter chamber, one end of drum assembly is communicated with water inlet chamber;Backwashing mechanism is used to backwash drum assembly;Sewage tank is arranged in drum assembly, the other end of sewage tank extends to water inlet chamber and is connected with the inner side wall of box after extending out of drum assembly, and sewage tank does not rotate with drum assembly.The microfiltration machine of the application makes the sewage in water inlet chamber directly flow into the inside of drum assembly through one end of drum assembly, realizes open water inlet, discards the structure form that water inlet pipe traverses box and extends to the inside of drum assembly along the axis of drum assembly, structure process is simpler, product manufacturing cost is low, and disassembly and maintenance are convenient.

The application discloses a combustion chamber structure for limiting the shrinkage and deformation of a head surface of a propellant, which comprises a propellant column, a shell with an insulating layer, and a lining layer, and further comprises an insulating ring, which is arranged at the head of the combustion chamber and is bonded to the shell with the insulating layer by means of an adhesive, and the propellant column is bonded to the shell with the insulating layer and the insulating ring through the lining layer. By arranging the insulating ring with a limiting function at the head surface of the combustion chamber, the radial shrinkage and deformation of the head surface are effectively prevented, so that the assembly interference problem between the inner surface of the propellant column and an ignition device due to the solidification deformation of the inner surface of the propellant column is avoided, the danger caused by the artificial shaping of the head surface is avoided, meanwhile, the gap formed between the insulating ring and the ignition device can effectively prevent the ignition device from being ablated and falling off, and then the thrust and pressure oscillation phenomenon caused by the ablation and falling off of the ignition device is avoided, which is favorable for improving the working efficiency of the solid rocket engine, and the process is simple, the universality is high, the production and maintenance costs are reduced, and the cost reduction and benefit increase are realized.

The utility model relates to a battery management system, which belongs to the field of new energy automobiles and comprises a lower base, an upper cover plate and a PCB (printed circuit board) mother board, the lower base and the upper cover plate are butted and covered up and down to form a shell, the PCB mother board is arranged on the inner wall of the lower base, a PCB daughter board is clamped between the lower base and the upper cover plate, and the PCB daughter board is arranged in the shell. And the PCB daughter board and the PCB mother board are connected and separated through a plurality of copper columns to form a double-layer stacked PCB. According to the battery management system disclosed by the utility model, the structure and the assembly process of double-layer stacked PCBs (Printed Circuit Board) are simple, and the number of related parts is not obviously increased compared with that of a BMS (Battery Management System) of a single-layer board, so that the additional cost is not increased, and the popularization is facilitated.

The invention belongs to the technical field of photoelectric detection, and discloses a photoelectric device used for intra-sensory reservoir calculation and a preparation method thereof.The photoelectric device used for intra-sensory reservoir calculation comprises a substrate, a drain electrode is arranged on the substrate, polymer semiconductor layers are arranged on the drain electrode, the drain electrode and the substrate, a source electrode and a grid electrode are arranged on the polymer semiconductor layers, and the source electrode and the grid electrode are arranged on the substrate. Electrolyte is arranged on the source electrode, the grid electrode and the polymer semiconductor layer; and the polymer semiconductor layer is made of an organic mixed ion-electron conductor material. According to the photoelectric device provided by the invention, the dynamic response range of the device can be regulated and controlled by utilizing the grid voltage, and the device shows the reconfigurable nonlinear relaxation characteristic dependent on the grid voltage, so that the sensing, memorizing and in-situ preprocessing functions of optical signals can be realized, and the photoelectric device can be widely applied to the field of edge artificial vision systems.

The utility model relates to an expansion kettle, a cooling system with the expansion kettle and a vehicle, the expansion kettle is used for the vehicle, a plurality of cooling cavities are formed in the bottom of the expansion kettle, a hollow cavity is formed in the top of the expansion kettle, the expansion kettle communicates with a plurality of cooling loops of the vehicle through the cooling cavities, and the expansion kettle further comprises at least one pressing plate, the at least one pressing plate covers the at least one cooling cavity and separates the cooling cavity from the hollow cavity, and the pressing plate is provided with a through hole communicating the cooling cavity with the hollow cavity. According to the expansion kettle provided by the embodiment of the invention, the pressing plate is arranged on the cooling cavity, the phenomenon that the liquid level turns over when the expansion kettle works is reduced through the pressing plate, the cooling cavity can further conduct liquid circulation and exhaust through the through hole, the working noise of the expansion kettle is reduced, the structure and the manufacturing process of the pressing plate are simple, and the cost is low. And the structural transformation of the expansion kettle can be reduced.

The utility model relates to an automatic cleaning and drying integrated device, belongs to the technical field of cleaning and drying integration, and aims to solve the problem that both water-based liquid spray cleaning and ultrasonic cleaning in a traditional cleaning method have certain defects. Through the rotating shaft, the rotating sleeve, the sealing cover, the connecting pipe, the first spraying rod, the nozzle, the first outer four-corner plug, the second spraying rod, the second outer four-corner plug, the first bearing and the second bearing, fluid is used as power to push the device to conduct 360-degree rotating spraying cleaning or blowing drying, and the device is simple in structure, low in cost, stable in operation, safe, environmentally friendly and suitable for popularization and application. The cleaning device is small in influence caused by fluid pressure and manufacturing process changes, is firm and durable, is suitable for using low-cost inflammable and explosive cleaning agents, and is worthy of being popularized vigorously.

The application discloses a downhole power cutting device for a drill pipe in a coring accident, which comprises a downhole power cutting device body and an auxiliary device, wherein the downhole power cutting device body comprises a base, a bearing sleeve, a hydraulic cutter device, a screw motor, a bypass valve, a bearing seat, a single-acting water sealing assembly, a weight and a spear head, and the auxiliary device comprises a lifting and fishing winch, a steel wire rope, a drilling machine and a mud pump; the application can achieve the following effects: simple, quick, convenient, safe and reliable operation, fast and effective solution to the drill pipe cutting in a coring accident, limitation of the influence of the drill pipe cutting in the coring accident within a controllable range, reduction of manpower, material resources and time cost, improvement of the success probability of complex accident treatment, improvement of the drilling construction efficiency and reduction of the probability of abandonment of a drilling hole due to failure of complex accident treatment.

The present application provides a multiplexer and a detector, wherein the multiplexer includes a dielectric substrate, a connection structure, and a plurality of bandpass filters with different operating frequencies. A conductive film layer is provided on one side plane of the dielectric substrate, and the conductive film layer includes a signal line and a ground plate located on the side of the signal line. The connection structure is provided on the conductive film layer, and includes a main branch and a plurality of branches, wherein the main branch is respectively connected to the plurality of branches, and the main branch serves as an input port of the multiplexer. A plurality of bandpass filters with different operating frequencies are all connected to the signal line and the ground plate. Each bandpass filter includes a first port and a second port, wherein the first port is respectively connected to the corresponding branch, and the second port serves as an output port of the multiplexer. The signal line and the ground plate, the connection structure, and the bandpass filter can be located on the same side plane of the dielectric substrate, thereby reducing metal loss and radiation loss, and facilitating integration with other components of the detector.

The present invention discloses a two-dimensional material / silicon heterojunction array based on a silicon substrate on an insulating layer and a preparation method thereof, including a plurality of heterojunction units constituting the array. The heterojunction unit is a vertical heterojunction of a two-dimensional material / silicon, and the array is a planar array of heterojunction units. The preparation method is to form a patterned top silicon strip on a silicon substrate on an insulating layer by etching the top silicon, and then sequentially deposit an insulating layer, make electrodes, etch out silicon windows and silicon contact holes, and then transfer the two-dimensional material to the silicon window and pattern it. The present invention broadens the absorption band and enhances light absorption through a vertical heterojunction of a two-dimensional material and silicon. In the heterojunction array of the present invention, each column / row of heterojunctions shares the same top silicon strip, and the two-dimensional material contact electrodes of each row / column of heterojunctions are interconnected to form a top electrode wiring of the row / column. The present invention realizes the array production of two-dimensional material / silicon heterojunction devices, and provides a solution for large-scale integration of two-dimensional materials and silicon.

The invention provides a semiconductor device and a manufacturing method thereof. The device comprises a substrate; the first insulating layer is formed on the substrate; a first semiconductor layer formed on the first insulating layer; the side surface of the first semiconductor layer obliquely intersects with the upper surface of the first insulating layer; a second semiconductor layer formed on a side surface of the first semiconductor layer, a third semiconductor layer formed on a side surface of the second semiconductor layer, a fourth semiconductor layer formed on the first to third semiconductor layers, two-dimensional charge carrier gas is formed at the interfaces of the fourth semiconductor layer and the first to third semiconductor layers. One of the following effects of simple device structure, simple process, low cost and excellent electrical performance can be realized.

The utility model discloses a low-power-consumption linear high-frequency oscillator and an electric toothbrush, the linear high-frequency oscillator comprises a casing, the casing penetrates along the axial direction to form a mounting cavity, an opening at one end of the casing along the axial direction is covered with a baffle, and an opening at the other end of the casing is covered with an end cover; a mover module is connected in the mounting cavity in a sliding mode in the axial direction, a first through groove is formed in the mover module in the width direction of the machine shell in a penetrating mode, and magnetic steel is arranged in the first through groove; two sets of plate spring assemblies are arranged in the mounting cavity and connected to the two ends of the rotor module in the axial direction respectively. Two coil winding modules are arranged in the mounting cavity and oppositely arranged on the two sides of the mover module in the width direction of the machine shell, and when alternating current is connected, the magnetic poles of the ends, facing each other, of the two coil winding modules are opposite, and the coil winding modules are used for driving the mover module to do linear reciprocating motion in the axial direction. According to the utility model, the use feeling and the experience feeling of customers can be improved while the power utilization endurance is improved.

The invention discloses a transistor, a semiconductor device, a manufacturing method of the semiconductor device and electronic equipment. The transistor comprises a first electrode, a second electrode, a semiconductor layer, a gate insulating layer and a gate electrode, wherein the semiconductor layer, the gate insulating layer and the gate electrode are located between the first electrode and the second electrode and are sequentially arranged; the first electrode and the second electrode are distributed on two sides of the semiconductor layer along a first direction, and the gate electrode is distributed on one side of the semiconductor layer along a second direction; the first direction is crossed with the second direction; the gate electrode extends along the first direction; the orthographic projection of the gate electrode on the plane perpendicular to the first direction is not overlapped with the orthographic projection of the first electrode on the plane perpendicular to the first direction. The orthographic projection of the gate electrode on the plane perpendicular to the first direction is not overlapped with the orthographic projection of the second electrode on the plane perpendicular to the first direction. The leakage current of the transistor provided by the embodiment of the invention is small.

The invention relates to an air cooling heat dissipation structure of an elevator energy recovery device. The air cooling heat dissipation structure comprises airflow holes, a shell, deflection baffles and a cabinet door. The shell is composed of a cuboid-shaped shell body and a top cover plate, and the top cover plate is welded to the top of the cuboid-shaped shell body. Cabinet doors are hinged to two sides of the shell; airflow holes are formed in the top bottom of the shell and the cabinet doors; the deflection baffles are arranged on the inner wall of the shell and arranged on the same vertical plane in a vertically-spaced and crossed mode. The system has the beneficial effects that airflow generated when the elevator runs in the hoistway is adopted as a cooling medium of the energy storage battery, the heat exchange effect is high, temperature distribution is uniform, and cost is zero; heat generated in charging and discharging of the energy storage battery is quickly brought out of the equipment by airflow, so that the problem of heat accumulation of the equipment is effectively solved with zero cost, the energy-saving device is more energy-saving, and meanwhile, the structure is simple in process; the deflection baffles are arranged on the inner wall of the shell and are arranged on the same vertical plane in a vertically-spaced and crossed mode, the flowing time and distance of airflow in the shell are prolonged, and heat exchange is more sufficient.

This utility model belongs to the technical field of check valve equipment, and relates to a novel bidirectional damping anti-jamming slow-opening and slow-closing check valve. It includes a valve body with an internal cavity, connecting seats on the top and bottom walls, a valve stem on the connecting seats, a damping device on the outside of the valve stem, a damping cavity inside the connecting seats, and unblocking holes running through the valve stem from top to bottom. A sealing sleeve is located at the top of the valve stem. This utility model has a simple structure and manufacturing process, is easy to maintain, and has a good buffering effect. It is suitable for various water, oil, and gas media systems, slowing down the opening or closing of the valve stem to prevent corrosion or jamming, thus protecting the safe operation of the device.

The utility model discloses an internal oil filling type capsule oil conservator, which relates to the technical field of electrical equipment and comprises a conservator body, an oil storage capsule arranged at the lower part in the conservator body, a connecting oil pipe fixed at the bottom of the conservator body, a connecting oil pipe communicated with the bottom of the oil storage capsule, an oil filling pipe communicated with the outer side of the connecting oil pipe, and an oil inlet pipe communicated with the oil filling pipe, the internal oil filling type capsule oil conservator has the advantages that the manufacturing process is simpler, and the internal oil filling type capsule oil conservator is easier to maintain.

The invention discloses charging equipment and charging method for accumulated water deep hole blasting construction under special environmental conditions, and belongs to the technical field of blasting engineering construction.The charging equipment comprises a main pile casing, the top of the main pile casing is connected with a plurality of auxiliary pile casings, and one end of the main pile casing and one end of each auxiliary pile casing are each provided with a direct connecting piece in an adhesive mode. The inner diameter of the direct connection is the same as the outer diameter of the main pile casing and the outer diameter of the auxiliary pile casings, the main pile casing and the auxiliary pile casings are directly connected with the two auxiliary pile casings, rope hanging holes for fixing lifting ropes are symmetrically formed in the upper end of the main pile casing, two rectangular sliding grooves and two inserting holes are formed in the lower end of the main pile casing, and two supports are arranged in the main pile casing. Explosive is directly, evenly and continuously loaded into a drill hole through the pile casing, the explosive loading density is guaranteed, the structure and the manufacturing process are simplest, construction operation is more convenient, explosive loading is safer, the speed is higher, and the comprehensive cost is lower; the labor intensity can be effectively reduced, the safety performance of operation is improved, and the work efficiency is improved.