26results about How to "Easy to enter" patented technology

The utility model provides a pipe jacking device for underground pipe network construction, which comprises a base, a movable guide rail is arranged on the base, a clamping sliding seat and a pipe jacking sliding seat are arranged on the movable guide rail, a pipe jacking sliding rail is arranged on the pipe jacking sliding seat, a pipe jacking seat is arranged on the pipe jacking sliding rail, a supporting clamping plate is arranged on the pipe jacking seat, and a pushing hydraulic cylinder is arranged on the supporting clamping plate. A top pressing plate is arranged at the top end of the pushing hydraulic cylinder, a clamping sliding rail is arranged on the clamping sliding seat, a positioning seat is arranged on the clamping sliding rail, a fixing assembly is arranged on the top of the positioning seat, supporting plates are arranged on the two sides of the positioning seat, a sliding through groove is formed in the middle of each supporting plate, and a clamping assembly is arranged in each sliding through groove. The pipe jacking head is loaded between the fixed idler wheel and the clamping idler wheel through the fixing assembly and the clamping assembly, the pipe jacking head can be put into a pit conveniently, position adjustment and pipe jacking operation are conducted on the pipe jacking head through the movable guide rail, the pipe jacking sliding rail and the clamping sliding rail, and the central axis of the pipe jacking head coincides with the central axis of a pipeline. And pipeline inclination is prevented from affecting construction.

The utility model relates to the technical field of pile driving equipment, in particular to foundation pillar driving equipment which comprises a crawler, a support and a supporting pillar. The support is fixed to the front side of the crawler. The supporting column is hinged to the end of the support, and the two ends of the first hydraulic cylinder are hinged to the support and the supporting column correspondingly. The pile hammer hydraulic cylinder is fixed to the front side of the upper end of the supporting column, and the pile hammer is installed at the lower end of the pile hammer hydraulic cylinder. The guide sleeves are symmetrically hinged below the pile hammer in front of the supporting column; the lifting hydraulic cylinder is fixed to the rear side of the upper end of the supporting column. A hydraulic motor is mounted in the sliding table, and a twist drill is mounted at the lower end of the hydraulic motor; according to the utility model, through the improvement of the foundation pillar driving equipment, the foundation pillar driving equipment has the advantages that the drilling and the piling are integrated, the equipment cost is reduced, the piling angle is adjustable, and the foundation pillar driving equipment is suitable for different terrains, so that the problems and the defects in the prior art and equipment are effectively solved.

The utility model discloses a foundation reinforcing pile which comprises a fixed rod and four arc-shaped push plates arranged around the fixed rod, a groove is formed in the top of the fixed rod, a movable rod is inserted into the groove in a sliding mode, the outer side of the fixed rod is sleeved with a sliding sleeve in a sliding mode, and the top of the sliding sleeve is fixedly connected with the top of the movable rod; by arranging the conical pile tip defined by the drill bit, the reinforcing pile body can be conveniently driven into a foundation, then the movable rod drives the sliding sleeve to slide on the fixed rod, when the bottom end of the movable rod gets close to the bottom end of the groove, the supporting rod rotates to be in a parallel state from an inclined state, and the supporting rod drives the outer plate and the arc-shaped push plate to move outwards and upwards; when the circumference of the reinforcing pile expands outwards to the maximum limit, the contact area of the reinforcing pile and the foundation is increased, the supporting stability of the reinforcing pile body is improved, concrete pouring is conducted, the top position of the pile body is fixed conveniently, the contact area of the pile body and the foundation is increased, and the stability of the reinforcing pile body and the foundation is improved.

The present application belongs to the technical field of geotechnical engineering test, and relates to a system and method for rapidly determining the permeability coefficient of low-permeability soil in situ, which comprises an inner sleeve, an outer sleeve, a pressurizing device and a pore water pressure sensor. The inner and outer sleeves are simultaneously driven into the soil to a specified depth, and then the outer sleeve is further pressed to form a sealed test cavity; water is injected into the inner sleeve and the top is closed, and a stable air pressure is applied through the pressurizing hole to accelerate the permeation; the pore water pressure sensor pre-embedded at the bottom of the outer sleeve is used to monitor the transient change data of the pore water pressure at the soil permeation interface in real time and in situ, instead of the traditional external water level change. Based on the monitored pressure decay data, the soil parameters can be calculated. Compared with the prior art, the present application discards the unreliable water level observation link, shortens the test time from several days to several hours, fundamentally avoids the errors introduced by the capillary effect and hysteresis effect, and realizes the rapid and high-precision test of low-permeability soil in situ.

The application belongs to the technical field of oil exploitation, and is especially a sand prevention well completion structure of an easily-pulled-out downhole sand prevention pipe column, which comprises a loose sandstone formation, an isolation body filling layer and a sand prevention pipe column, an inner part of the loose sandstone formation is provided with a well mouth, the sand prevention pipe column is arranged in the inner part of the well mouth, an inner part of the sand prevention pipe column is provided with the isolation body filling layer, an upper end of the well mouth is provided with a positioning mechanism, an upper end of the positioning mechanism is provided with a sealing mechanism, the positioning mechanism comprises a seat ring, a limiting plug and a positioning sliding cylinder, the bottom end of the seat ring is fixedly connected with the limiting plug, the limiting plug is inserted into the upper end of the well mouth, and the inner part of the limiting plug is provided with the positioning sliding cylinder, the positioning mechanism and the sealing mechanism are arranged, the downhole running and pulling-out operation of the sand prevention pipe column relative to the well mouth is facilitated, the upper part of the isolation body filling layer can be sealed and protected, and the use effect is better.

The invention relates to the technical field of dam slope reinforcing, in particular to a pumped storage power station dam slope reinforcing device which comprises a protection plate, the bottom face of the protection plate is fixedly connected with a stand column with the bottom end of a conical structure, the four corners of the bottom face of the protection plate are each rotationally connected with a cylindrical shell, and anchor rods are arranged at the bottom ends of the cylindrical shells. According to the device, the anchor rod at the corresponding position can be inclined by the steel rope through rotation of the round roller, then the anchor rod in the inclined state can rotate in soil through rotation of the cylindrical shell, a cavity similar to a suction cup structure is formed in the soil, and then concrete is poured into the cavity, so that the anchor rod is prevented from being damaged. After the concrete is dried up, the contact surface with the soil can be increased, although the soil is subjected to thermal expansion and cold contraction in the later period, the sucker-shaped cement columns can shake, and the cement columns cannot be pulled out of the soil at the moment, the stability of the protection plate can be improved, the stability of the protection plate is improved, and water and soil loss of the dam slope can be prevented; therefore, the stability of the dam slope is improved.

The utility model discloses a ground anchor device for electric power engineering, which comprises a fixed cylinder, the outer wall of the fixed cylinder is fixedly sleeved with a spiral blade, the bottom of the fixed cylinder is provided with a drill bit, a rotating rod is rotatably mounted in the fixed cylinder, and the outer wall of the rotating rod is fixedly sleeved with a cam. A plurality of inserting rods distributed at equal intervals slidably penetrate through the front end and the rear end of the fixing cylinder, one end of each inserting rod makes contact with the cam, the top of the rotating rod penetrates through the fixing cylinder to be connected with a locking assembly, a connecting frame is movably installed at the top of the outer wall of the fixing cylinder, and a wire pulling ring is arranged at the top of the connecting frame. By means of the arrangement, firmness between the ground anchor device and the interior of soil can be improved, and stable wire pulling or wire guiding work of electric power engineering is guaranteed.

The present invention relates to a pipeline crossing drilling while drilling gyro shock absorbing device and drilling equipment, and relates to the field of oil drilling. The two ends of the gyro barrel of the pipeline crossing drilling while drilling gyro shock absorbing device are respectively slidably arranged in a main shock absorbing sleeve and an auxiliary shock absorbing sleeve, a first damping group is arranged in the main shock absorbing sleeve, and the two ends are respectively fixedly connected to the main shock absorbing sleeve and the gyro barrel, a second damping group is arranged in the auxiliary shock absorbing sleeve, and the two ends are respectively fixedly connected to the auxiliary shock absorbing sleeve and the gyro barrel, a gyroscope body is fixed in the gyroscope barrel, and the two ends of the sliding limit mechanism are respectively fixedly connected to the outer walls of the main shock absorbing sleeve and the auxiliary shock absorbing sleeve. The drilling equipment comprises a pipeline crossing drilling while drilling gyro shock absorbing device. The main shock absorbing sleeve and the auxiliary shock absorbing sleeve slide in cooperation with the gyro barrel, and the extension and contraction of the damping column consume the energy of vibration, and reduce the up and down vibration of the gyroscope barrel. The sliding limit mechanism ensures the structural reliability, and the sliding limit mechanism can slide synchronously without affecting the shock absorbing effect.

This invention provides a large-scale offshore precast pile positioning fixture and its usage method. The precast pile positioning fixture includes a positioning pile, a pile driving positioning fixture, and a layout fixture. The pile driving positioning fixture is rectangular, and adjacent sides are connected by corresponding layout fixtures, which in turn are connected to their corresponding positioning piles. In this invention, the simple layout fixture determines the positions of the two sides of the pile driving positioning fixture. Because the pile driving positioning fixture itself is rectangular and reinforced with reinforcing rods, its strength and stability are ensured. Thus, by positioning two adjacent sides of the rectangular frame with two positioning fixtures, the pile driving positioning fixture can be quickly positioned. In this invention, the pile gripper can be integrated or separate. Separate positioning rings can be opened and locked using spring locks, allowing for easy disassembly and extraction of the pipe pile.

The invention discloses a novel breast tissue marker, and relates to the technical field of medical instruments, the novel breast tissue marker comprises a metal core and a marker shell wrapping the outer surface of the metal core, the metal core is a non-magnetic metal core, and the marker shell has a compressed state when not absorbing water and an expanded state when being expanded after absorbing water. The marker shell is of a hard structure in a compressed state, and the marker shell is made of a flexible material in an expanded state. According to the arrangement, the metal characteristic of the metal core ensures that the marker is easy to find under X-ray; due to the non-magnetic characteristic of the metal core, noise generated during magnetic resonance is reduced, the developing property of magnetic resonance is improved, and the marker can be easily found during magnetic resonance; the marker shell has an expansion state of expanding after absorbing water, and can absorb body fluid after the whole marker is implanted into a human body, so that the marker shell absorbs water to expand, the volume of the marker shell is expanded, the developing performance of an ultrasonic image is improved, and the marker shell can be found more easily during ultrasonic examination.

This application belongs to the field of hydro-generator installation and discloses a stator core slot clamping device for hydro-generators with measuring function. It includes a support cylinder and an insert block disposed at the front end of the support cylinder. The first end face of the insert block has outwardly extending lugs on both sides, and the opening formed by the lugs and the first end face mates with the slot opening of the hydro-generator stator core slot. A measuring scale is provided on the outer side of the insert block. A pressure sensor is provided on the inner side of the first end face of the insert block. A threaded through hole is provided in the middle of the insert block, and a screw rod is provided inside the support cylinder. The screw rod passes through the threaded through hole and is threadedly connected to the insert block. This reduces the difficulty of clamping the stator core wires in the hydro-generator and improves installation efficiency. The pressure sensor, in conjunction with the measuring scale, can determine whether the stator wires are clamped firmly and tightly against the bottom surface of the core slot, solving the problem that the stator wires are not easily fully lowered to the bottom of the stator core slot during installation, thus affecting the installation of the slot wedges.

The utility model belongs to the technical field of screw driving processing, and particularly relates to a screw driving anti-deviation positioning device which comprises an operation table, a positioning mechanism and a fixing mechanism are arranged above the operation table, the fixing mechanism is located on one side of the positioning mechanism, a bottom plate is arranged below the operation table, and a damper is arranged between the bottom plate and the operation table. The surface of the damper is sleeved with a second spring. The positioning mechanism comprises a positioning assembly and a lifting assembly; the lifting component is positioned on the surface of the positioning component; the positioning assembly comprises a connecting frame, and an electric push rod is arranged on the outer side of the connecting frame. Through the positioning mechanism and the positioning assembly, the position of the positioning plate can be conveniently moved, so that screws can be driven according to hole sites of different circuit boards, meanwhile, it is guaranteed that driven threads are located at the hole sites of the same straight line in the circuit boards, and deviation during screw driving is prevented; therefore, the screw can be conveniently driven into the hole site of the circuit board, and the screw driving accuracy is improved.

The utility model discloses a fixing frame for epidemic prevention of pig raising in the field of animal husbandry breeding, which comprises a bottom plate, one side of the bottom plate is rotatably connected with a baffle plate through a connecting assembly, and the bottom surface of the bottom plate is provided with traveling wheels distributed in a rectangular shape. The side portions and the back portions of live pigs needing epidemic prevention can be fixed and limited through the cooperation of the clamping assemblies and the limiting assemblies, and the side portions and the back portions of the live pigs needing epidemic prevention can be fixed and limited through the clamping assemblies and the limiting assemblies. According to the anti-epidemic device for the live pigs, the anti-epidemic action range is not too large when the live pigs are subjected to epidemic prevention, the stability of the live pigs during epidemic prevention is improved, feeding personnel can conveniently drive epidemic prevention needles into the bodies of the live pigs, the outer side walls of the walking wheels in the static state can be fixed in an abutting mode through the fixing assemblies for fixing the walking wheels, operation is easy, and the anti-epidemic device for the live pigs is convenient to use. And therefore, the overall stability of the fixing frame for epidemic prevention of pig raising during use is ensured.

The present application provides a device control method and apparatus, which is applied to a first device having at least one microphone, including: collecting an audio signal through a microphone; determining the signal type and audio characteristics of the audio signal; the signal type at least including wind noise; judging whether the signal type and audio characteristics meet a preset condition; when the signal type and audio characteristics meet the preset condition, triggering a control command corresponding to the preset condition, the control command is used to control a second device. The implementation of the embodiments of the present application can realize the use of a microphone to control a device without the user making a sound, thereby improving the user experience.

The present invention relates to the field of building technology, and in particular to a T-shaped connection structure of a building roof and a building wall panel. The structure comprises: a building roof, including a first building roof and a second building roof; a building wall panel; a connecting plate, located at the top of the first building roof and the second building roof; three fixed anchor blocks, respectively embedded in the first building roof, the second building roof and the building wall panel; and a connecting piece, connecting the fixed anchor blocks and the connecting plate. In the present invention, a fixed anchor block is respectively embedded in the first building roof, the second building roof and the building wall panel, and is respectively connected to the three fixed anchor blocks through the same connecting plate, which can simplify the assembly steps between the first building roof, the second building roof and the building wall panel, and improve the strength of the first building roof, the second building roof and the building wall panel. The setting of the connecting plate makes it convenient to drive the connecting piece from the connecting plate during assembly, which is convenient for assembling the roof and wall panels at the construction site, and reduces installation errors and operating difficulties.

The utility model discloses a blocking device for wind and sand control, and belongs to the technical field of wind and sand control. The blocking device for wind and sand control comprises a bottom plate, inserting holes are formed in the four corners of the top end of the bottom plate, positioning rods are inserted into the inner sides of the inserting holes, a blocking plate is installed at the top end of the bottom plate, a plurality of through holes are formed in one side of the blocking plate, reinforcing bases are installed at the bottom ends of the two sides of the blocking plate, and one sides of the reinforcing bases are inclined. A sand guide plate is mounted on one side of the reinforcing seat, a flapping mechanism for cleaning through holes is mounted at the top end of the barrier plate and comprises a pair of retaining seats, the bottom ends of the retaining seats are fixedly connected with the top end of the barrier plate, rotating shafts are rotatably connected to the inner sides of the retaining seats, connecting sleeves sleeve the outer sides of the rotating shafts, and vertical rods are mounted at the top ends of the connecting sleeves; according to the flapping cleaning device, the flapping cleaning function can be effectively achieved, holes of the blocking plate are prevented from being blocked by wind and sand, and the flapping cleaning device has high practical value.

The utility model belongs to the technical field of road and bridge line brushing, and particularly relates to a line brushing vehicle which comprises a moving assembly capable of enabling the line brushing vehicle to move integrally easily, and the moving assembly is provided with a heating assembly capable of keeping paint injected into the line brushing vehicle at a certain temperature and enabling the paint sprayed to a line drawing area to be dried and hardened rapidly. And a stirring assembly capable of keeping the fluidity of the coating and spraying the coating as required is arranged on the heating assembly. In the process that the heat supply piece continuously supplies high-temperature airflow into the dispersing piece to heat coating in the stirring assembly, the flowing high-temperature airflow is dispersed and decelerated in sequence through the dispersing piece and the drying piece, so that the high-temperature air escaping from the drying piece is uniformly dispersed, and the coating in the stirring assembly is heated. The coating spraying device can be in uniform contact with the coating sprayed on the marking area at a low flow speed, so that the sprayed coating is prevented from diffusing around due to blowing of high-speed airflow on the basis of accelerating drying and hardening of the sprayed coating.

The invention discloses a deep sampling device for coal mine geological exploration and relates to the technical field of geological exploration, the deep sampling device comprises a positioning seat, a drill rod assembly and a sampling assembly, positioning drills are arranged at the two ends of the exterior of the positioning seat, a first hydraulic cylinder is arranged in the positioning seat, and a lifting seat is arranged at the output end of the first hydraulic cylinder; a positioning assembly is arranged at the outer end of the lifting base, and a drill rod assembly is arranged in the positioning assembly. After air enters the air blowing groove, the excavating head can be ejected out of the rod body, so that the sampling piece of the excavating head can excavate and sample the surface of a soil layer, after the excavating head is displaced, the suction groove can be communicated with the backflow groove, at the moment, the suction machine works, suction force can enter the suction groove, the suction groove is communicated with the sampling groove, and the sampling piece can sample the surface of the soil layer. Through the operation, the equipment can realize sampling of a soil layer, and the sliding seat can freely slide in the rod body, so that the sampling assembly can freely collect soil samples at different depths in the use process.

The invention relates to the technical field of soil sampling devices, and provides a double-layer soil sampling barrel and an undisturbed soil sampler. The two arc-shaped outer barrels are arranged on the inner barrel in a sleeving manner, and a gap is formed between the edges of the two arc-shaped outer barrels; the two ends of the elastic connecting piece are connected with the two arc-shaped outer barrels respectively, the elastic connecting piece is located in the gap, the elastic connecting piece provides force for enabling the two arc-shaped outer barrels to be close to each other and abut against the outer wall of the inner barrel, and the elastic connecting piece is used for driving the two arc-shaped outer barrels to be closed and eliminating the gap after the inner barrel is pulled out; and the threaded connection part is used for being in threaded connection with the power ring part or being in threaded connection with other inner barrels through the connecting ring. By means of the technical scheme, the problems that in the prior art, a soil sampling cylinder of a double-layer structure is poor in quick-release connection attribute, and the outer cylinder is difficult to pull out subsequently are solved.

The utility model discloses a positioning jig for an automobile air curtain thrust plate, and relates to the technical field of jigs. The positioning jig for the automobile air curtain thrust plate comprises a bottom plate, a vertical plate is arranged on one side of the middle of the top surface of the bottom plate, a supporting plate is fixedly arranged on the top surface of the vertical plate, a first through hole is formed in one side of the middle of the top surface of the supporting plate, and the positioning jig further comprises a limiting assembly which is arranged on the top surface of the bottom plate. The limiting assembly is arranged on the supporting plate, located on one side of the bottom of the supporting plate and used for clamping and limiting an automobile air curtain. The clamping assembly is arranged on the surface of the top of the bottom plate and located on one side of the vertical plate, the clamping assembly and the limiting assembly are matched with each other, the purpose of limiting and fixing a buckle on an automobile air curtain can be achieved, a thrust plate can be conveniently driven into the buckle on the automobile air curtain through follow-up equipment, and the clamping assembly is convenient to use. And the thrust plate driving precision is ensured.

This invention discloses a hybrid powertrain transmission device coupling an engine and an electric motor, including an engine, a generator, and a drive motor. A rotational transmission mechanism is provided between the drive motor and the wheels. A heat dissipation protection component is provided on the gearbox of the rotational transmission. The heat dissipation protection component includes a heat dissipation fin plate disposed inside the gearbox, an air duct communicating with the outside of the gearbox, and a heat dissipation fan and a lubricant spraying assembly disposed inside the air duct. The air duct is connected to the airflow channel of the heat dissipation fin plate. When the heat dissipation fan is working, the airflow generated flows through the heat dissipation fin plate to dissipate heat inside the gearbox. At the same time, the generated air pressure drives the lubricant spraying assembly to spray lubricant at the gear meshing position. In operation, the invention enables air to continuously flow through the heat dissipation fin plate by turning on the heat dissipation fan, thereby dissipating heat from the gearbox cavity and protecting the gears.

The utility model discloses an underwater oil and gas production tree tubing hanger plug which comprises a plug body, a metal sealing ring and a guide plate which are axially connected in sequence, and an inner fishing assembly is movably connected in the front end of the plug body. A first annular step is arranged at the position, close to the metal sealing ring, of the rear end of the plug body, the first annular step is sequentially sleeved with a first supporting ring, a first V-shaped sealing ring, an O-shaped ring, a second V-shaped sealing ring and a second supporting ring in the axial direction, and the end face, away from the second V-shaped sealing ring, of the second supporting ring makes contact with the front end of the metal sealing ring. According to the underwater oil production and gas production tree tubing hanger blanking plug, the metal sealing ring is matched with the first supporting ring, the first V-shaped sealing ring, the O-shaped ring, the second V-shaped sealing ring and the second supporting ring, multiple sealing is achieved, the blanking plug can move up and down in the working barrel while sealing is achieved, and the blanking plug is convenient to use. Therefore, the blanking plug is easy and convenient to salvage and easy to operate.

The application discloses an underwater robot grabbing device with a buffer structure and belongs to the underwater robot field.The underwater robot grabbing device comprises a grabbing dynamic guide structure, a multifunctional buffer matching and adjusting claw structure, a power module, a driven transmission module and other equipment which are connected with each other.The underwater robot grabbing device is designed in cooperation with the grabbing dynamic guide structure and the multifunctional buffer matching and adjusting claw structure, so that the underwater robot grabbing device is convenient to use underwater, and a multidirectional adjustable claw is formed, so that the underwater robot grabbing device is convenient to adjust the different volumes and different clamping angles underwater, and thus the underwater grabbing is facilitated.In addition, the underwater robot grabbing device is designed in cooperation with the reciprocating positioning derivation module and the buffer claw module, so that the underwater robot grabbing device is convenient to reciprocally impact the position which cannot be clamped and fixed by the underwater hard object, so that the positioning nail is punched into the interior, the underwater robot grabbing device is convenient to be applied to the underwater ore sample grabbing, and the design of the buffer structure avoids the impact from directly acting on the whole device, and the service life is facilitated to be prolonged.

The invention relates to the technical field of bridge maintenance, and provides a supporting system for bridge first-aid repair and a construction method of the supporting system. The supporting system comprises a pile group foundation, a first connecting frame, an assembling pier column and a second connecting frame. The pile group foundation comprises a plurality of spiral single piles which are arranged side by side and configured to be anchored in earthwork. The first connecting frame is detachably connected with the portions, exposed out of the ground, of the multiple spiral single piles. The assembled pier column is configured to be vertically distributed, the lower end of the assembled pier column is detachably connected with the first connecting frame, and the upper end of the assembled pier column is detachably connected with the second connecting frame; the second connecting frame is configured to be connected with a bridge span structure. The supporting system can sequentially transmit loads from top to bottom, has the advantages of being good in stability, high in bearing capacity, low in cost and the like, can stably and reliably support a bridge to be repaired, and facilitates operators to effectively repair and reinforce the bridge in time.

The application provides an intervertebral space matching combined fusion device and an installation tool thereof, which comprises two bags and a fusion device body; each bag comprises a bag body and a connecting head arranged on one end of the bag body, the bag body has a hollow inner cavity, the connecting head is provided with a connecting head through hole communicated with the hollow inner cavity, and the connecting head is further provided with a connecting head connecting part; the top surface of the fusion device body is provided with a fusion device through hole; a spacing plate is arranged in the fusion device through hole, and all the spacing plates divide the fusion device through hole into two bag body receiving grooves with different widths; two installation through holes are arranged on one end surface of the fusion device body; each installation through hole is communicated with a corresponding bag body receiving groove, and each connecting head can be inserted into a corresponding installation through hole. The intervertebral space matching combined fusion device, the height of the bag body can be greater than the height of the fusion device body, and then the bag body filled with bone filling material can automatically fill the uneven end plate.

The present application relates to the field of downhole oil tools, and in particular to a drum storage pipe type reservoir communication device and a method for using the same, which includes a drum type coil assembly, including a core shaft, a coil tube connected to the core shaft, a nozzle wound on the coil tube, a stopper and a plug, the stopper is arranged on the core shaft and limits the rotation of the coil tube, the plug is arranged on the core shaft and limits the stopper from falling off the core shaft, the coil tube is provided with a guide hole, one end of the nozzle is located in the guide hole and a nozzle is formed at the end, and the diameter of the nozzle is smaller than the diameter of the guide hole; a sliding sleeve includes an outer tube, an inner tube and a shear pin, the shear pin is arranged on the outer tube and is used to limit the sliding of the inner tube, the core shaft is connected to the inner tube, a transition hole connected to the transition hole is arranged on the inner tube, a spray hole is arranged on the outer tube, and the inner tube can make the transition hole and the spray hole connected or disconnected by sliding. The present application has the effect of maximizing the nozzle length that can be installed with the same axial installation size.