92results about How to "Achieve automatic closure" patented technology

A bypass switch self-triggering circuit of a multilevel converter submodule comprises a bypass circuit charging diode DC, a bypass circuit charging resistor R1, a first normally-closed contact switch K1, a second normally-closed contact switch K2, a normally-open contact switch K3 and a bypass circuit energy storage capacitor CC. The bypass switch self-triggering circuit of the sub-module is connected with the multilevel converter submodule through an electrical circuit and a control circuit. When the multilevel converter submodule is in a normal state, normally-closed contact relays Q1 and Q2 of the bypass switch self-triggering circuit are in disconnection states, the normal running of the sub-module is not affected; and when a bypass switch cannot be controlled by the submodule due to faults of a submodule energy taking power supply and a submodule control board, the normally-closed contact relays Q1 and Q2 of the bypass switch self-triggering circuit are in closed states, the submodule is automatically bypassed, and the fact that the whole multilevel converter cannot normally work caused by a fault of an internal component of the submodule is prevented.

The invention discloses a low-voltage cable branch box capable of achieving charged disconnection and connection. The low-voltage cable branch box comprises a box body and a box door, wherein supportlegs are arranged at the bottom of the box body; four low-voltage busbars with equal intervals are longitudinally arranged in the box body; each low-voltage busbar is provided with an insulating isolation device for separately isolating each low-voltage busbar; air inlet channels are arranged in a side wall of the box body; an exhaust channel is arranged in the bottom of the box body; a cooling and dehumidifying device is arranged in the exhaust channel; an inner wall of the box body is provided with a temperature and humidity sensor for monitoring internal temperature and humidity of the boxbody; the inner wall of the box body is also provided with a plurality of voltage detection modules; an audible and visual alarm is arranged at the top of the box body; the inner wall of the box dooris provided with a controller and a signal processing module; the signal processing module is connected with the voltage detection modules, the audible and visual alarm, the temperature and humidity sensor and the controller separately; and the controller is connected with the cooling and dehumidifying device.

The invention provides a household food garbage processor comprising a milling device, a milling chamber and a storage chamber, wherein the milling device is mounted above the milling chamber; the milling chamber is mounted on the storage chamber in a sealed manner; the milling chamber is communicated with the storage chamber through a connector; the storage chamber is externally provided with a moving device for driving the milling device to move in a vertical direction; and the moving device drives the milling device to move upwards in the vertical direction. According to the household food garbage processor, food garbage can be crushed into slurry liquid or very small grains; in-time, convenient and fast kitchen cleaning can be easily realized; and pathogenic bacteria, mosquitoes and peculiar smells, which are caused by depositing untreated food garbage, are avoided; and therefore, a domestic environment is effectively optimized and the problem that a sewer is easy to block is completely solved.

The apparatus serves for blow moulding containers. Preforms of a thermoplastic material are heated in the region of a heating zone and subsequently transferred to a blow moulding device. The blow moulding device is provided with at least one blow moulding station for transforming the preforms into the containers. Provided for handling the preforms is a gripper-like transporting element (41) with two gripper arms (45, 46), which are arranged pivotably in relation to a gripper carrier (42). Each of the gripper arms can be pivoted by means of at least one lever and is coupled with a central element (49). The central element is arranged at least partly between the gripper arms. Each of the gripper arms is resiliently clamped with respect to the central element by at least one spring (56, 57).

The invention discloses a soil detection device. The soil detection device comprises a console, a longitudinal regulation mechanism and a sampling mechanism; a fixed mechanism is mounted on the lowersurface of the console; a transverse regulation mechanism is mounted at the left part of the console; a clamping mechanism is mounted on the transverse regulation mechanism; and the sampling mechanismis arranged on the console. According to the soil detection device, the sampling mechanism is arranged, so that while accurate sampling is implemented, soil at different depths can be simultaneouslysampled, thereby facilitating carrying out detection of the soil at different depths by an experimenter; scale marks are set, so that a sampling depth can be observed; the clamping mechanism is arranged, so that the sampling mechanism can be clamped by the clamping mechanism after sampling, thereby facilitating sampling by an inspector without holding a sample with a hand by the inspector and preventing the hand of the inspector from being damaged by polluted soil; and a drying box is arranged, so that the sample can be dried, thereby preventing influence of soil humidity on a detection result.

The invention discloses a drill stand face pipe column treatment device which comprises sliding rails. The sliding rails are fixed to a drill stand face. A moving assembly is arranged on the sliding rails to slide. A mechanical arm assembly is fixedly connected to the moving assembly. A pipe column treatment clamp head is installed at the top end of the mechanical arm assembly. The mechanical armassembly is used for adjusting and transporting a pipe column and keeps the pipe column treatment clamp head horizontal. The pipe column treatment clamp head is used for clamping the pipe column. According to the purpose, the drill stand face pipe column treatment device is provided and can be used for achieving multifunctional operation.

Disclosed is an automatically opening and closing vegetable planting machine. The machine comprises a manual component, a sliding component and a plurality of tongues (5), wherein the manual component comprises a control plate (4), an upper transplanting hole (12) opened on the middle of same, and a hand-held part; the sliding component comprises a hanging plate (6) wherein a lower transplanting hole (10) is opened on the middle of same, and the sliding component and the manual component are connected in a relatively slidable manner; the upper transplanting hole (12) corresponds to the lower transplanting hole (10), and the axial distance between the upper transplanting hole (12) and the lower transplanting hole (10) is changed when sliding; the tongues (5) are divided into a guide part (52) and a bending part (51), and the guide part (52) is connected to the control plate (4) and the hanging plate (6); the opening and closing of the bending part (51) is formed when the control plate (4) is sliding relative to the hanging plate (6), so that the vegetable planting machine is used easily and efficiently.

The invention discloses a powder conveying device and relates to the field of manufacture equipment for an additional material of a powder bed. The powder conveying device is used for solving the problem that since an existing powder conveying device is easily influenced by the particle size and fluidity of powder and the work environment, powder conveying is uneven or the powder conveying deviceis easily damaged. The device comprises a powder box, a powder collection groove assembly, a rotation block assembly and a support. A powder outlet of the powder box is formed above the powder collection groove assembly and provided with a powder leakage insertion strip. The powder collection groove assembly comprises two or more powder collection groove sheets and two powder collection groove catches, a first side face of each powder collection groove catch is in contact with the side wall of the corresponding powder collection groove sheet, and the portions, in contact with the powder collection groove sheets, of the powder collection groove catches are provided with U-shaped hole grooves. A second side face of each powder collection groove catch is provided with a bearing hole and a bearing cover plate, the inner wall of each bearing hole is provided with a seal groove, the bearing cover plates are used for covering the bearing holes, and asbestos ropes are arranged in the seal grooves. The rotation block assembly comprises two rotation catches and a rotation block, and the rotation block is provided with a side notch.

The invention relates to a chain used for a conveyor belt type dump semi-trailer, and belongs to the technical field of chains and dump semi-trailers. A roller of the chain comprises a rolling cylinder, an oil storage cylinder, end covers and a pressing plate. The oil storage cylinder is positioned at the upper side of the rolling cylinder and communicates with the rolling cylinder; the oil storage cylinder is provided with a side opening; and the oil storage cylinder is filled with elastic porous oil-absorption material and used for storing lubricating oil, so that a sleeve and a pin shaft are well lubricated. The lubricating oil is filled into the side opening through an upper oil wheel; and the side opening can be automatically closed to avoid leakage of the lubricating oil and preventthe outer surface of the chain and the environment from being polluted. The end covers are positioned at the front and rear sides of the rolling cylinder and the oil storage cylinder; and the end covers elastically abut against inner chain plates so as to close the roller relative to the inner chain plates, so that the aggravation of abrasion and corrosion due to the invasion of dust and water canbe avoided. The pressing plate elastically abuts against the inner chain plates or an outer chain plate at the left and right ends so as to limit the rotation range of the rolling cylinder, ensure that the rolling cylinder can automatically return to the original position and maintain the relative position, reduce the meshing impact, and prolong the service life. The upper oil wheel of the chainis capable of controlling the circulation of the lubricating oil, avoiding leakage and preventing pollution.

The invention belongs to the technical field of electrical equipment accessories, and relates to a cable bridge closed based on gravity extrusion. The cable bridge comprises a bottom frame, a fixed plate, wire slot frames, a movable frame, a tension spring, a sealing element, a sealing sheet, sliding rods and a pull ring, According to the cable bridge of the invention, a cable passes through the gap between the wire slot frames at two sides and is placed on the movable frame; under the gravity effect of the cable, the movable frame moves downwards, so that the sliding rods in the movable frame slide in sliding grooves, the sliding rods at two sides get close to each other, and the wire slot frames at two sides rotate inwards; and the wire slot frames on the two sides are clamped, so that a closed space is formed, the cable is wrapped, and corrosion to the cable is reduced; in the laying process, only the cable needs to be laid on the movable frame, and automatic closing of the cable bridge can be realized under the gravity action of the cable, so that steps in the cable erecting process are reduced, and the cable laying efficiency is improved.

The invention belongs to the technical field of energy-saving irrigation, and specifically relates to an energy-saving irrigation spray head. The spray head comprises a mounting ring, a connecting pipe, a mounting pipe, a cap, a protective cover and a spraying mechanism; the mounting ring is fixedly mounted on a water pipe and communicates with the water pipe; the connecting pipe is fixedly mounted at the upper end of the mounting ring; the connecting pipe is made of a ceramic silicone rubber material, and is set as a folding pipe; the upper end of the connecting pipe is fixedly connected with the mounting pipe; the cap is arranged above the mounting pipe; and the outer surface of the mounting pipe is initially sleeved with the protective cover. When a spraying area of an adjusting head needs to be enlarged, the water pressure in an elastic pipe can be increased only by increasing the transmission speed of water flow, so that the elastic pipe expands to push the adjusting head to move upwards, and the spraying range of the adjusting head is enlarged; the larger the water pressure is, the wider the spraying range is, that is, the spraying irrigation range is adjusted through the water pressure, and a complex adjusting mechanism is not needed, so that not only is the cost greatly reduced, but also the spraying range can be automatically adjusted, and water source waste is avoided.

The invention discloses a batch automatic lithium battery sorting and assembling device. The batch automatic lithium battery sorting and assembling device comprises a base and a first stepping motor arranged at the upper end of the base, first conveying rollers and second conveying rollers located behind the first conveying rollers are arranged on the left side and the right side above the base, an output shaft of the first stepping motor is in keyed joint with the first conveying roller on the left side, a first conveying belt is connected between the two first conveying rollers, spacing barsused for spacing and positioning a fixing frame are arranged on the first conveying belt at equal intervals, and a second conveying belt is connected between the two second conveying rollers. The device has the advantages that the structure is reliable, the square frame can continuously and automatically drive the lithium batteries to move backwards, ascend to be separated from the lithium batteries and move downwards to cover the lithium batteries after moving forwards, meanwhile, the conveying assembly can fill the lithium batteries until rows of lithium batteries are fully placed in the fixing frame, meanwhile, the fixing frame is pushed backwards, automatic closing of the fixing frame is achieved, then a new fixing frame is conveyed and moved away, the automation degree is high, and the working efficiency is improved.

The invention relates to a device and a method for groundwater level measurement and sampling at fixed depth and belongs to the technical field of underground water monitoring. The technical scheme isthat the device is lowered to a deep well or a drilling hole, and when a measuring cup (3) touches the surface of the water and sends out a colliding sound, the depth of the water level is recorded;the device continues to descend to a preset sampling depth, at this time, an adjustable sampling bottle cap (4) is pressed and opened in response to water pressure. Water enters the sampling bottle through a bottle mouth (8), and when the sampling bottle is filled with water, a measuring rope (1) is pulled. When no pressure difference exists between the inside and outside of the sampling bottle, the adjustable sampling bottle cap is moved upwards by the rebound hinge (10) until a bottle mouth cap cover card (12) blocks the adjustable sampling bottle cap. The adjustable sampling bottle cap is reset. The device has an advantage of low price and can be used for drilling and in various groundwater deep wells such as drill-and-excavation-combined wells and monitoring wells. The sampling processis simple, and the device is convenient to carry and maintain.

The invention relates to a hidden type fireproof window. The hidden type fireproof window comprises a window frame and an openable window sash and further comprises door closers for controlling the window sash to be automatically closed when a fire disaster occurs, the door closers comprise a driving door closer and a driven door closer, a window shaft is arranged on the driven door closer, the window sash rotates around the window shaft to be opened and closed, a window sash groove is formed in the outer wall of the window sash, a window frame groove is formed in the inner wall of the windowframe, a concave cavity is defined by the window sash groove and the window frame groove when the window is closed, and the door closer is hidden in the concave cavity; the driving door closer comprises a shell, a swing cross rod rotationally connected to the shell, a hydraulic press connected into the shell and driving the swing cross rod to rotate and a cross rod sliding block connected to the end, away from the hydraulic press, of the swing cross rod, a limiting sliding groove matched with the cross rod sliding block is formed in the fireproof window, and the cross rod sliding block is connected into the limiting sliding groove in a sliding mode. The fireproof window has the effects of hiding the door closer, improving the aesthetic degree of the fireproof window and protecting the doorcloser.

The invention discloses a simple shower room which comprises a movable door assembly, a fixed door assembly and two wall assemblies. The movable door assembly and the fixed door assembly are correspondingly connected to two walls at the right-angled position of a bathroom through the two wall assemblies to form a complete shower space in a defining mode; and the simple shower room further comprises fast-mounting connecting assemblies, wherein the movable door assembly is connected with the top of one wall assembly and the fixed door assembly is connected with the top of the other wall assemblyboth through the quick-mounting connecting assemblies. The movable door assembly comprises a movable door and a base, the upper end of the movable door is rotationally connected with the corresponding quick-mounting connecting assembly, and an adjusting mechanism used for adjusting the door closing angle of the movable door is arranged between the movable door and the base; and when the movable door is adjusted to any door closing angle, automatic closing can be achieved after the door is opened. According to the simple shower room, the door assemblies and the wall assemblies can be quickly mounted and connected, and the closing angle between the movable door and a fixed door can be freely adjusted under the condition that the movable door can be automatically closed.

The invention provides an automatic vehicle door closing device, a closing system with the same and a closing method thereof. The automatic vehicle door closing device comprises a first attraction component arranged on a vehicle door and a second attraction component arranged on a side body, wherein the first attraction component comprises a first attractor, the second attraction component comprises a second attractor, and both the first attractor and the second attractor comprises shells, electrode masts and inductance coils. When the inductance coils are energized, the first attractor and the second attractor are attracted to each other. The vehicle door closing device provided by the invention has simple structure, automatic closing of the vehicle door can be realized, and the safety of driving can be increased. With the automatic vehicle door closing system provided by the invention, the automatic closing of the vehicle door can be realized via a vehicle door opening and closing sensor and an ECU (Electronic Control Unit) control system. The automatic vehicle door closing system has simple structure and simplicity and convenience in operation, and the safety of driving can be increased. The automatic vehicle door closing method provided by the invention is easy to operate, the automatic closing of the vehicle door can be realized, and the safety of driving can be increased.

The invention discloses a torsion piece type self-closing structure and a double-shaft-core rotating shaft adopting the same. The torsion piece type self-closing structure comprises a first shaft core, a second shaft core, a first connecting plate, a second connecting plate and at least one torsion piece. The torsion pieces are arranged and a cut face is arranged on one shaft core, so that with the aid of matching of the cut face on the corresponding shaft core as well as closing arc faces and torsion arc faces on the torsion pieces, a self-closing function at a specific angle is achieved while rotating torsion is provided. According to the double-shaft-core rotating shaft adopting the torsion piece type self-closing structure, the occupied space of the rotating shaft can be reduced whilethe rotating torsion is provided and the self-closing function at the specific angle is achieved, so that the thinning development requirement of electronic equipment such as notebook computers can bewell met.

The invention discloses an electronic vibration fresh-keeping refrigerator with a good fresh-keeping effect. The electronic vibration fresh-keeping refrigerator comprises a refrigerator body, a fresh-keeping chamber is formed in the refrigerator body, a refrigerator door is rotatably connected to the outer wall of the refrigerator body, a cavity is formed in the refrigerator body, a fixing plate is fixedly connected to the inner wall of the cavity, and a moving rod is inserted into the fixing plate; and a sliding groove is formed in the end, away from the fixing plate, of the movable rod, a rotating rod is rotationally connected to the inner wall of the box door, and a push rod located in the sliding groove is fixedly connected to the end of the rotating rod. By the arrangement of an ultrasonic generator and an ultrasonic transducer, frosting of the inner wall of the refrigerator is avoided, and the refrigerating effect of the refrigerator is guaranteed; a time relay and an electromagnet are arranged, when the refrigerator door is opened for a period of time or longer, the electromagnet is powered on to generate magnetism to push a toothed plate to move, and automatic closing of the refrigerator door is achieved; and a power amplifier is arranged to increase power when the refrigerator door is opened, so that constant air temperature in the refrigerator is ensured.

The invention discloses an automatic closing structure for a sliding cover. The automatic closing structure comprises a door lock body, the sliding cover and a lever handle, wherein one end part of the lever handle is rotationally arranged on the door lock body, a rotating column is arranged at the end part, and a push rod is arranged above the rotating column; one end part of the push rod is butted against the rotating column, and the other end of the push rod is linked with a shifting fork; the shifting fork is provided with a hook part; a stirring sliding chute is formed in the door lock body, and the hook penetrates through the stirring sliding chute to be connected with the sliding cover; a positioning concave part is formed in the inner side face of the sliding cover, a positioning piece matched with the positioning concave part is arranged on the door lock body and is used for positioning the opened sliding cover. When the lever handle is rotated to unlock a door lock, the rotating column can drive the push rod to move up, the hook part of the shifting fork is driven to swing downwards to push the sliding cover to slide down, and thus the sliding cover is automatically closed. In the moving-down process of the sliding cover, a rack and a gear relatively move, a damper enables the sliding cover to slowly drop down through the engagement of the gear and the rack, and the sliding cover and the door lock body cannot collide with each other to make a sound.

The invention discloses a novel water-saving water faucet and relates to the technical field of water faucets. The structure of the novel water-saving water faucet comprises a pulling member and a silica gel sealing member capable of being deformed elastically. The silica gel sealing member can be deformed elastically by exerting acting force on the pulling member, and an water outlet is opened, so that opening of the water faucet is achieved; after the acting force on the pulling member is removed, the silica gel sealing member resets automatically and elastically at once under the action of the resilience force of the silica gel sealing member, and the water outlet is sealed, so that automatic closing of the water faucet is achieved. On-off of water flow can be controlled through the water faucet by only arranging the pulling member and the silica gel sealing member capable of being deformed elastically, so that the water-saving water faucet is simple in structure and easy to assemble. In addition, the closing of the water faucet can be achieved through automatic elastic reset under the circumstance that a resetting member is omitted, and the number of constituent parts of the water faucet is reduced, so that the structure of the water faucet is further simplified and the production cost of the water faucet is reduced.

The invention discloses an anti-unhooking device for a crane hook. According to the anti-unhooking device for the crane hook, a sliding groove is formed in a straight handle of the hook, a spring I and a sliding block are installed in the sliding groove, the sliding block is a straight rod with a rectangular section, a concave groove is formed in the lower end of the straight rod, a telescopic buckle is arranged on the inner side of the hook, a spring II is arranged in the buckle for supporting, an unhooking button is arranged on the outer side of the hook, the hook is provided with an arc-shaped connecting rod, and the tail end of the connecting rod is connected to the straight rod through a thin steel wire rope. The anti-unhooking device for the crane hook has the advantages that when a lifting rope is hung into the hook, the hook can be automatically closed, so that the lifting rope cannot slide off, and the safety of lifting work is ensured; and when lifting is finished and the lifting rope is taken down, the unhooking button is pressed down, so that the lifting rope can be quickly taken down, and therefore the working efficiency is high, and convenience and rapidness are achieved.

The invention discloses a fireproof door capable of being locked 2 minutes after door opening and closing. A photoelectric switch which is used for inducting the door opening action is arranged on a door frame. A door lock is in transmitting connection with a drive motor installed in a door body through a drive shaft. A control circuit comprises a power module, a main control module, a starting switch and a retarder, wherein the main control module is electrically connected with the retarder and the photoelectric switch bi-directionally, the main control module output is electrically connected with the starting switch, the starting switch is electrically connected with the drive motor, and the power module output is electrically connected with the main control module, the starting switch, the retarder and the photoelectric switch. Due to the fact that the control circuit which can delay the locking time controls the drive motor to drive a lock cylinder of the door lock and realizes the automatic opening and closing of a lock body, the automatic locking 2 minutes after the fireproof door is closed can be realized, the situation that fire spreading when fire disaster happens due to the miss locking of the fireproof door can be avoided, and the fireproofing grade of the fireproof door can be improved.

The invention discloses a device for bending and deburring a stainless steel pipe. The device comprises a base, wherein a sliding groove is formed in the interior of the base; a part of the middle portion of the sliding groove communicates through the upper surface of the base; the steel pipe is arranged above the base; a first hydraulic rod is fixedly arranged at the left end of the upper surfaceof the base; a first fixing mechanism for fixing the steel pipe is fixedly arranged at the top of the first hydraulic rod; the steel pipe penetrates through the first fixing mechanism; the middle portion of the steel pipe is sleeved with a cleaning mechanism for deburring; and a moving mechanism for driving the cleaning mechanism to move left and right on the steel pipe is fixedly connected to the lower end of the cleaning mechanism. The device for bending and deburring the stainless steel pipe is reasonable in structure, and can simply fix the steel pipe and carry out deburring treatment onthe steel pipe automatically; the processing effect and efficiency are improved through a cleaning method combing rotating and moving; and meanwhile, residual burrs attached on the steel pipe can be automatically removed while the steel pipe is automatically bent, and therefore the processing quality is improved.

The invention discloses a working method of a lithium battery assembling device. The working method comprises the following specific working steps that step 1, a second stepping motor drives a rotating shaft to rotate, the rotating shaft enables lithium batteries to be conveyed all the time through a conveying assembly, meanwhile, the rotating shaft sequentially transfers rows of lithium batteriesinto a fixing frame through a displacement mechanism to be arranged, and the fixing frame is pushed backwards for a certain distance each time; and step 2, the fixing frame is filled with the lithiumbattery, the fixing frame is pushed out of a spacing bar for the last time, an abutting block is not abutted against by the spacing bar any more, and an opening and closing plate is closed. The working method has the advantages that the structure is reliable, a square frame can continuously and automatically drive the lithium batteries to move backwards, ascend to be separated from the lithium batteries and move downwards to cover the lithium batteries after moving forwards, meanwhile, the conveying assembly can fill the lithium batteries until the fixing frame is fully with the rows of lithium batteries, meanwhile, the fixing frame is pushed backwards, automatic closing of the fixing frame is achieved, then a new fixing frame is conveyed and the finished fixing frame is moved away, the automation degree is high, and the working efficiency is improved.

The invention discloses a closed wood grinding device for furniture production. The device comprises a closed housing, a grinding chamber, a buffering assembly, a feeding channel and a grinding supporting plate, wherein the grinding chamber is arranged in the closed housing, and the feeding channel is arranged at the upper right of the grinding chamber and communicates with the grinding chamber; the buffering assembly is arranged at the lower part of the feeding channel and is mounted on the inner wall of the grinding chamber; the grinding supporting plate is arranged at the left side of the buffering assembly; the grinding supporting plate is of a hollow structure, and the left end of the grinding supporting plate is welded to the left sidewall of the closed housing; a discharging port isformed in the lower part of the left sidewall of the closed housing and is positioned in the left side of the grinding supporting plate; and the discharging port communicates with the grinding chamber. The device is reasonable in design; wood can be effectively prevented from breaking during being conveyed, and meanwhile, the wood can be automatically fed and fixedly grinded; device is energy saving, environmentally friendly, and suitable for popularization.

The invention discloses a blank door. The blank door comprises door leaves and connection devices for connecting the door leaves and door hole walls; the door leaves are provided with surface decoration layers; and the surface layers of surface decoration layers and the door hole walls are visually uniform or continuous. The door leaves and the door hole walls are uniform in modeling, so that the door leaves cannot be easily found visually, and the whole beauty of the decoration design can be facilitated; a door closing device can automatically close the opened door leaves; and the combination part of two door leaves has a notch structure, so that the door leaves can be positioned conveniently.

The invention belongs to the technical field of energy-saving irrigation, and particularly relates to an energy-saving irrigation nozzle and a mounting method thereof, the energy-saving irrigation nozzle comprises a mounting ring, a connecting pipe, a mounting pipe, a cover cap, a protective cover and a spraying mechanism; the mounting ring is fixedly mounted on the water pipe and communicates with the water pipe, and a connecting pipe is fixedly mounted at the upper end of the mounting ring; the connecting pipe is made of a ceramic silicone rubber material, the connecting pipe is a folding pipe, and the upper end of the connecting pipe is fixedly connected with a mounting pipe; a cover cap is arranged above the mounting pipe, and the outer surface of the mounting pipe is initially sleeved with a protective cover; when the spraying area of the adjusting head needs to be enlarged, the water pressure in the elastic pipe can be increased only by increasing the transmission speed of water flow, so that the elastic pipe expands to push the adjusting head to move upwards, the spraying range of the adjusting head is enlarged, the larger the water pressure is, the wider the spraying range is, the spraying irrigation range is adjusted through the water pressure, and a tedious adjusting mechanism is not needed; not only is the cost greatly reduced, but also the spraying range can be automatically adjusted, and water source waste is avoided.