51results about How to "Optimize the fixed structure" patented technology

The invention aims to provide a ceiling fan flange which is convenient to fix and reliable and a ceiling fan provided with the flange. The ceiling fan flange comprises a flange body, and a screw hole is formed in the flange body. The ceiling fan flange is characterized in that a through hole is formed in the flange body, and a part of the through hole is communicated with the screw hole; a fixing pin is fixedly mounted in the through hole, a rotation preventing plane is arranged at the side part of the fixing pin and faces the screw hole, and part of the rotation preventing plane is located in the screw hole. The ceiling fan comprises a motor shaft, a motor, fan blades and the flange, the motor is mounted on the motor shaft, the fan blades are mounted on the motor, external threads are formed in the upper part of the motor shaft, and the motor shaft extends into the screw hole in the flange and is connected and fixed with the flange in a screw-thread fit manner. More importantly, a fixing plane is arranged at the side part of the upper part of the motor shaft and is opposite to the rotation preventing plane of the fixing pin.

The invention provides a telescopic type clamp-on ammeter for overhead line measurement. A plurality of image pick-up pinholes are formed at an iron core clamp head; collected optical signals are guided to an image pick-up component through an optical fiber so as to form a positioning screen; the positioning screen can be adopted as references for the operation of engineering staff; a three-dimensional guide map indicating the space position relationship of the clamp head and a conductor can be simulated in real time according to the positioning screen; and the relative position change of the clamp head and the conductor can be reflected in the three-dimensional guide map, so as to serve as an indication for the engineering staff. According to the telescopic type clamp-on ammeter for the overhead line measurement of the invention, the iron core clamp head and the facing direction of the jaw of the clamp head can be adjusted sufficiently and freely, so that clamping operation in all directions can be facilitated; and the clamp head can be easily locked after the direction of the clamp head is adjusted, so that a single conductor can be separated from a plurality of bunched conductors so as to be clamped.

The invention discloses a battery pack and a vehicle. The battery pack comprises a battery module and a cooling device, each battery direct-connection group layer in the battery module at least comprises two battery direct-connection groups which are arranged side by side at intervals; the battery direct connection group comprises a battery cell stacking body, wherein the battery cell stack body comprises a plurality of soft package battery cells formed by series pole core groups, first pole lug brackets are arranged at two ends of each battery direct connection group, two adjacent battery direct connection groups which are arranged side by side are connected with the first pole lug brackets at the same end, and an accommodating space is defined between the two battery direct connection groups and the first pole lug brackets at the two ends; wherein the liquid cooling plate is attached to the battery direct connection group layer, the liquid cooling plate is arranged on the upper surface and / or the lower surface of the battery module, the liquid cooling plate and the accommodating space define an accommodating groove, the heat conduction plate is connected with the liquid cooling plate and inserted into the accommodating groove, the accommodating groove is sealed by another liquid cooling plate or protection plate, and heat conduction glue is arranged between the battery directconnection group and the heat conduction plate. The battery pack is simple in internal structure, high in unit volume capacity density, high in heat conduction efficiency and easy to adjust in height.

The present invention provides a direct gasolene injection engine equipped with an oil fuel pump which comprises a cam axle installed on a cylinder cap, an adapter integrally formed by a cam at one side of the cam axle and a cam cover installed on the cylinder cap for supporting the cam axle, an oil fuel pump installed on the adapter and spraying out fuel oil according to the rotation of the cam axle, a cylinder head cover with one side combined with the cylinder head and the other side combined with the adapter. A sealing member is inserted between the adapter and the cylinder head cover, the adapter and the cylinder head cover are combined by a screw bolt, therefore improving the sealing and fixing structure. Furthermore, a sheet-like cushion ring is used for sealing the gapping place between the bolt head and the cylinder head cover, therefore improving wearing property and sealing structure. Furthermore, the mounting face of the upper part of the adapter is inclined by a predetermined angle, the oil fuel pump is installed on the installation surface to make the assembling of the oil fuel pump easier and the sealing structure more compact.

The invention provides auxiliary mounting equipment for road and bridge embedded parts and relates to the field of building construction. The auxiliary mounting equipment for the road and bridge embedded parts solves the problems that a plurality of ground nails cannot be synchronously inserted and fixed during fixing, special tools need to be used for prying in the ground nail pulling-out process, quick alignment and quick limiting of the horizontal position of the embedded part cannot be achieved, time is wasted in adjustment and alignment of the horizontal position, and the embedded part isprone to moving to affect follow-up mounting. The auxiliary mounting equipment for the road and bridge embedded parts comprises a base; and a fixing seat is inserted into the base. Due to the fact that the head ends of the four ground nails are all connected with a main body plate in a welded mode, the main body plate forms a synchronous movement structure of the four ground nails, and therefore,the rapidness of nailing of the ground nails can be improved. Due to the fact that the head end of an elastic clamping pin is connected with a tooth row in a clamped mode and is of an inclined structure, when a handle is pressed in a reciprocating mode, the fixing seat is in an upward moving state, so that the ground nail is rapidly pulled out.

The invention provides an impact type soaking cleaning oil basin of a heavy truck filter screen, relates to the field of filter cleaning devices, and solves the problems that impact type cleaning andvibration impact of a filter cannot be realized in a linkage mode, organic auxiliary combination with other accessories cannot be achieved in the disassembling and assembling process, and the disassembling and assembling efficiency is low are solved. The impact type soaking cleaning oil basin of the heavy truck filter screen comprises a rectangular oil basin. A combustion seat is inserted and fixed on the rectangular oil basin; when a placing seat main body moves downwards, at the moment, a shifting plate pulls a vibration seat to move upwards under the stirring of a tooth row; at the moment,an elastic piece D is in a compressed position, when the elastic piece D is compressed to the maximum extent, the tooth row compresses an elastic piece C to shrink, at the moment, the shifting plate is separated from blocking of the tooth row and automatically resets under the elastic action of the elastic piece D, the process is repeated, the shifting plate is in a vibration state when the filteris driven by the vibration structure to move downwards, and therefore the impact type cleaning effect of the filter can be further improved.

The invention discloses a light wave cooker with a burner lifting structure. The light wave cooker with the burner lifting structure comprises a burner body, a base and a baking tray, the middle of the base is provided with a support column, one end of the support column is connected to the middle of the burner body, and the other end of the support column is connected to the base; the support column comprises an upper column body and a lower column body which are mutually connected in a sleeving mode, the upper column body is connected to the burner body, and the lower column body is connected to the base; a lifting structure body which can telescopically change when the upper column body and the lower column body relatively rotate is arranged between the upper column body and a lower column body, and when the burner body rotates, the lifting structure makes the burner body conduct lifting movement in the rotation axis direction of the support column. According to the light wave cooker with the burner lifting structure, a burner structure aiming at a middle support type is improved, a user can easily push the burner body to rotate so as to achieve lifting operation, an illumination heating range of a light wave generated by the burner body is adjusted, and the potential safety hazard brought about in the lifting process of operating the burner body and noise generated during the operation are avoided, so that the user can have fun cooking and boiling with abandon.

The invention provides a switching mechanism with cable peeling and cutting functions, relates to the technical field of electric appliance accessories, and solves the problems that the flexible adjustment of a fixed position cannot be realized, the elastic looseness prevention of a fixed bolt cannot be realized, the drainage of water drops cannot be realized and the like. Auxiliary bending and pressing of the cable cannot be realized through structural improvement. The invention discloses a switching mechanism with cable peeling and cutting functions. The switching mechanism comprises a base body, four fixing structures are installed on the base body, a switch main body is further installed on the base body, and four cables are connected to the switch main body. The head end of the auxiliary block is of an inclined structure, and the auxiliary block and the rectangular hole jointly form a bending structure of the cable, so that the cable can be bent after the cover plate is fixed, and the fixing and fastening degree of the cable is further enhanced.

The invention provides a computer network device port connection reinforcing structure, relates to the technical field of computer devices, and solves the problems that the fixing efficiency between aplug and a socket cannot be improved through the structural improvement and a clamping type fixing method, the synchronous sealing of multiple sealing structures cannot be realized synchronously, andthe organic combination of the sealing structures and a reinforcing structure cannot be realized; and the socket of an existing device does not have a corresponding structure for clamping and fixinga cable. The computer network device port connection reinforcing structure comprises the socket, and the socket is fixed in a network box through a fastening bolt. Each protection plate is provided with a clamping groove, the clamping grooves are matched with the clamping protrusions, and the clamping grooves and the clamping protrusions jointly form a clamping type fixing structure of the plug and the socket. The top end surface of the protection plate is in contact with the bottom end surface of the plug, and the protection plate forms a stress protection structure of the plug, so that the protection capability when the plug is stretched downwards is improved.

The invention relates to a joint part external skeletal fixator, which comprises an external fixator assembly and a joint fixator, wherein the external fixator assembly is fixedly arranged on the limb part of the body, the joint fixator comprises an outer framework and a plurality of bone surface fixation assemblies arranged on the outer framework, the outer framework is fixedly arranged on the outer part of the body through the external fixator assembly, the outer framework comprises at least two fixing frames, each bone surface fixing assembly comprises a plurality of fixing blocks, fixing cables are arranged among the fixing blocks, the fixing blocks are fixedly arranged on the fixing frames, a support framework formed by at least two fixing cables is arranged between the fixing frames, and the support framework is in contact with the bone surface and realizes the support on the bone.

PURPOSE: A gasoline direct spray engine equipped with a fuel pump set is provided to improve a fixing structure and sealing structure by coupling a sealing member, an adaptor, and a head cover with bolts. CONSTITUTION: A gasoline direct spray engine equipped with a fuel pump set comprises a cam shaft, an adapter(110), a fuel pump(130) and a head cover(120). The cam shaft is formed to the cylinder head(100) and the cam is formed in one side. The adapter is integrated with a cam cap supporting the cam shaft. The adapter is installed to a cylinder head in order to support the cam shaft. The fuel pump is installed to the adapter and pumps the fuel with the rotation of the cam shaft.

The invention provides a guitar strap nail fixing structure and a guitar, and relates to the technical field of guitars. The guitar strap nail fixing structure comprises a guitar strap nail for connecting a guitar strap, a strap nail nut for matching with the guitar strap nail, and a nut seat with a mounting groove for accommodating the strap nail nut. When in use, the guitar strap nail is positioned outside a guitar body, and the nut seat and the strap nail nut are positioned inside the guitar body. The guitar comprises a guitar body and the guitar strap nail fixing structure, wherein the guitar body and the nut seat are integrally molded by injection, and the strap nail nut is arranged in the mounting groove of the nut seat; the guitar strap nail is arranged in the guitar body in a penetrating way and is in threaded connection with the strap nail nut. The guitar strap nail fixing structure can guarantee the stability of the connection between the guitar strap and the guitar body. After the guitar is fixed with the guitar strap nail fixing structure, the guitar can be well fixed with the strap.

The invention discloses a uniform anti-rolling conveying mechanism for round pipe production and machining. The uniform anti-rolling conveying mechanism comprises a rail structure. Two fixing blocks are welded to the rail structure, first conveying structures are fixedly connected to the fixing blocks, and pipe fitting blanks are placed in the first conveying structures. Due to the fact that a grinding piece is of an arc-shaped structure, adheres to the inner wall of a bin body and makes contact with the outer wall of the pipe fitting blanks, the outer walls of the pipe fitting blanks can be ground through the grinding piece in the conveying process of the pipe fitting blanks. Thirdly, a through hole A and a through hole B are each of a rectangular hole-shaped structure, the through hole Aand the through hole B are aligned with each other, and the through hole A and the through hole B are both aligned with a collection box so that gathering and collection of the grinding residues canbe realized.

The invention provides a molten aluminum chute with balanced temperature gradient, and relates to the field of cast-rolled aluminum. The problems that cooling pipes are not uniformly distributed enough, cooling is one-sided and the efficiency is low, cooling gas in the cooling pipes is locally heated in the cooling process, and flowing and mixing of the gas cannot be realized in the cooling process, and the chute can be disassembled and taken out only by completely disassembling a plurality of fixing bolts during disassembly, maintenance or replacement are solved; the molten aluminum chute with balanced temperature gradient comprises a chute main body, and a cooling structure is mounted on the chute main body. Due to the fact that the initial state of an elastic gas cylinder is an extension state, and the initial state of the gas cylinder is a compression state, and when the elastic gas cylinder is extruded, the cooling gas in a connecting base and the cooling pipes is in a motion mixing state, so that the cooling efficiency can be improved; due to the fact that the length of a poke rod is larger than the distance between a rocker arm and a stress plate, when the rocker arm is continuously rotated, the elastic gas cylinder is in a continuous extrusion state at the moment, and gas exchange in the cooling pipes is achieved.

The invention relates to the technical field of semiconductor processing equipment, in particular to an installation device of an ion source. The ion source comprises a cathode electrode arranged on the opening side of an arcing chamber. One end of the cathode electrode is provided with an opening. The filament is located in the opening and keeps a certain distance from the cathode electrode. Thecathode electrode protrudes inward from the opening side of the arcing chamber. The installation device comprises a cathode clamp which is used for fixing the cathode electrode; two filament clamps which are respectively used for fixing the two ends of the filament outside the arc starting room so as to keep the distance between the filament and the cathode electrode; and an insulating disk of which the front surface is provided with a first positioning structure, wherein one end of the cathode clamp is fixed on the first positioning structure, the back surface of the insulating disk is provided with a second positioning structure and one end of each of the two filament clamps is fixed on the second positioning structure. The beneficial effects are as follows: the installation time of thefilament is reduced and the filament offset caused by screw loosening or heating deformation can be prevented; and the position of the cathode electrode and the filament can be conveniently adjusted so as to ensure their spacing.

The invention provides an automatic storage type culture dish for biomedical engineering, relates to the field of culture dishes, and solves the problems that: a user needs to bend down to explore when taking the culture dish, inconvenience is caused, a cover plate for heat preservation on an existing device cannot be automatically opened and closed, and the practicability is poor; and most of theculture dishes and the placement seats are of a sleeved structure, and locking between the culture dishes and the placement seats cannot be automatically achieved when the placement seats are pulledout. The automatic storage type culture dish for biomedical engineering comprises an adjusting frame, and a mounting seat structure is rotationally connected to the adjusting frame. Clamping bulges, necks and annular grooves form the rotary fixing structure of the culture dish, so that the carrying stability of the culture dish can be guaranteed; secondly, as the teeth are meshed with the tooth row, and the teeth and the tooth row jointly form a gear tooth row structure, when a placement rack is pulled outwards, the culture dishes are driven by the tooth row to rotate by 90 degrees, and therefore the culture dishes can be automatically limited and fixed when the placement rack is disassembled.

The invention provides a multipurpose installing device based on electric automatic equipment and relates to the technical field of electric appliance installing devices. The multipurpose installing device based on the electric automatic equipment solves the problems that a cable arranging structure cannot achieve drag-resisting protection of a cable or achieve drag protection under the conditionof guaranteeing that the cable is free of damage, automatic limiting of a locking nut and automatic alignment of a threaded hole cannot be achieved, and a damping function cannot be achieved. The multipurpose installing device based on the electric automatic equipment comprises a body seat. The body seat is composed of two rectangular rods. Two body rods are welded to the body seat. A locking rodis provided with ten clamping grooves arranged in a rectangular array, the clamping grooves are of a major-arc-shaped groove structure, the clamping grooves undergo edge grinding treatment, the groovedepth of the clamping grooves is equal to 70% of the diameter of the cable, and therefore when a carding plate makes contact with the cable and clamps the cable, the cable can be prevented from beingdamaged.

The invention provides a power transformer for voltage conversion output, which relates to the technical field of welding machine transformers, and solves the problem that the disassembly and assembly efficiency of the cover cannot be improved through structural improvement under the condition of ensuring sealing; the wiring seat structure does not have automatic The locking function can easily cause the cable to fall off when the cable is unintentionally dragged. A power transformer for voltage conversion output includes a box body; a roller structure is installed on the box body, a heat dissipation structure is installed in the box body, and a cover plate is fixed on the box body. Because the cover plate is a cover-shaped structure, and a groove is opened at the back of the bottom end face of the cover plate; the groove is a semi-circular groove-shaped structure, and the groove constitutes the rainwater interception structure of the cover plate, which can prevent the rainwater from passing through the bottom of the cover plate. The end face slides into the inside of the box to cause a short circuit.

The invention provides a protective device for clinical medical staff in the medical pneumology department, relates to the technical field of medical supplies, and solves the problems that most of existing devices are adjusted by adding buckles, and the buckles are in contact with head, so that the head is uncomfortable, the telescopic adjustment and the expansion of the adjustment can not be realized through a magic tape through the improvement on the structure; and a wearing structure adhered through the magic tape is easy to crack, and the cracking probability cannot be reduced through the improvement on the structure. The invention discloses the protective device for clinical medical staff in the medical pneumology department. The protective device comprises a cover body, the cover body is connected with a connecting band A and a connecting band B; through the arrangement of a prompting structure, an air inlet pipe A is filled with a sponge column, and the air inlet pipe A is of a transparent tubular structure; the sponge column is filled with indicating liquid, and the sponge column forms a filter pad use state prompting structure, so that the use state of the filter pad can be found in time.

The invention provides a multi-purpose installation device based on electrical automation equipment, relates to the technical field of electrical installation devices, and solves the problem that the cable finishing structure cannot realize the anti-drag protection of the cable and realize the drag protection when the cable is not damaged. ; Can not realize the automatic limit of the lock nut and the automatic alignment of the threaded hole; can not realize the problem of shock absorption function. A multipurpose installation device based on electrical automation equipment, comprising a main body seat; the main body seat is composed of two rectangular rods, and the two main body rods are welded on the main body seat. Because there are ten card slots in a rectangular array on the locking rod, and the card slots are round groove-shaped structures; the card slots are edged, and the slot depth is equal to 70% of the cable diameter When the carding board is in contact with the cable, it can prevent damage to the cable.

The invention provides a novel building construction site garbage pool, relates to the technical field of garbage treatment, and solves the problems that when a cover plate is opened through structural improvement, the solid-liquid separation efficiency cannot be improved, synchronous cleaning of a drainage pipe filter screen cannot be synchronously achieved, elastic looseness prevention of a ground nail cannot be achieved through structural improvement, and pulling convenience of the ground nail cannot be improved through structural improvement in the prior art are solved. The novel building construction site garbage pool comprises a box body. A cover plate is connected to the box body in a sliding mode, and a containing box is placed in the box body. A cylindrical rod is welded on a stress plate, and a cleaning brush seat is welded at the tail end of the cylindrical rod. Two cleaning brushes are welded on the cleaning brush seat, the two cleaning brushes are in contact with the filter screen on a drainage pipe, and the distance between the two cleaning brushes is equal to the radius of a bulge, so that the filter screen can be cleaned through the cleaning brushes in the reciprocating motion process of the stress plate.

The invention provides a puncture needle positioning device for ultrasonic therapy, which relates to the technical field of positioning devices, and solves the problem that the elimination of empty back cannot be realized through structural improvement, which affects the positioning accuracy; if it is adjusted accidentally, it will easily lead to position deviation. Shifting, which requires readjustment, is a waste of time. A puncture needle positioning device for ultrasonic therapy, comprising a first adjustment structure and an adjustment rod structure; a second adjustment structure is installed on the first adjustment structure, and a positioning seat is welded on the second adjustment structure. Because the stop ring is welded on the threaded rod, and there is an elastic part B sleeved on the threaded rod; the head end of the elastic part B is in contact with the stop ring, and the tail end of the elastic part B is in contact with the handle, and pushed by the elastic force of the elastic part B The handle is in a non-contact state with the protrusion, so that the threaded rod will not be rotated when the handle is touched unintentionally.

The invention provides placed machining frame equipment for re-machining for ceramic with a high-strength structure, relates to the field of ceramic machining, and solves the problems that rapid fixing for a plurality of ceramic floors is difficultly realized, angle adjustment and rapid locking for a fixed frame cannot be realized, and an existing adjustment structure is low in cutting quality dueto the existence of backlashes. The placed machining frame equipment for re-machining for ceramic with the high-strength structure comprises a main body seat, wherein an adjustment structure A is slidably connected to the main body seat, and a placement seat structure is welded to the adjustment structure A. Through arrangement for a locking structure, after angle adjustment is completed, two locking sheets are slidably connected to a rotary rod separately, and make contact with two thread pipes separately; a thread rod C is connected to the two locking sheets through threads, and the threadsat the two ends of the thread rod C are opposite in direction; and the thread rod C is rotated, and the two locking sheets are tightly abutted against the two thread pipes separately, so that elimination for backlashes between the thread pipes and a gear is realized, and then the accuracy during cutting is increased.

The invention provides an environmental detection device equipped with a placement frame structure, relates to the field of environmental detection devices, and solves the problem that the staff need to climb to a high place to disassemble during maintenance, which has a large safety hazard; the gap between the detection main body and the frame body Most of the bolts are fastened, and the disassembly is cumbersome; the fixation between the detection frame and the fixed rod is poor, and the windy weather is likely to cause displacement. An environment detection device equipped with a mounting frame structure, comprising a base; four support seat structures are threaded on the base in an annular array. When it is necessary to maintain the device, turn the adjusting rod on the adjusting structure. At this time, because the adjusting rod and the gear together form a worm gear structure, turning the adjusting rod can realize the rotation of the gear, and then realize the loosening of the bolt. The installation seat and the main body of the detection device will slide down along the fixed rod, which avoids the climbing of personnel during maintenance.

The invention provides a manual hydraulic pump with adjustable supporting legs, and relates to the technical field of hydraulic pumps. The manual hydraulic pump comprises a protective shell; a set of supporting blocks are arranged at the bottom of the protective shell, a hydraulic cylinder is fixed to the inner side of the protective shell through bolts, and a set of supporting mechanisms are symmetrically fixed to the outer side of the protective shell through bolts; a rotating shaft is mounted on one side of the hydraulic cylinder, and a hook is mounted on the rotating shaft; a connecting sleeve is arranged at one end of the hydraulic cylinder, and a handle A is mounted on the connecting sleeve. The hook is arranged on the hydraulic cylinder, after the handle A is fixed through the hook, the handle A can move downwards due to the influence of external factors, so that the hook and the handle A are staggered, and the phenomenon that the hook is not firmly fixed is caused; an arranged reset spring can push the hook to move downwards, the hook and the handle A are conveniently connected, and in the downward moving process of the handle A, the hook can synchronously move, so that the fixing effect of the hook is better.

The invention provides a self-locking device for an endoscope bend, and relates to the technical field of probe devices. The problems that a single-position locking effect is poor, multiple locking cannot be realized through structural improvement, the locking precision cannot be improved under the structural improvement, and an automatic slag removal function is not realized are solved. The self-locking device for the endoscope bend comprises a box body, a cover plate is fixedly connected to the box body, an adjusting structure is installed on the box body, and a protection structure is installed on the adjusting structure. Because an elastic bayonet lock B is fixedly connected to the inner wall of the box body, the head end of the elastic bayonet lock B is connected with a tooth row A ina clamped mode, and the elastic bayonet lock B and the tooth row A jointly form a limiting structure of a connecting block; and due to the fact that a tooth row B and the tooth row A are arranged ina staggered mode, and the tooth row B and an elastic bayonet lock C jointly form a second limiting structure of the connecting block, auxiliary locking can be achieved, and the adjusting precision ofclamping locking can be improved.

The invention provides a warning board convenient to adjust for water conservancy and hydropower engineering construction, and relates to the technical field of hydropower engineering.The warning board comprises two sets of board bodies, the two sets of board bodies are hinged, and hinge shafts of the two sets of board bodies deviate backwards; the inner side of the bottom of the board body is of an opening structure. An LED lamp panel is fixedly arranged on the inner side of the front end of the board body, a brightness knob is arranged on the outer side of the board body, and the brightness knob is connected with the LED lamp panel in series; according to the sign body and the bottom support, a convenient and fast combined containing structure is provided, the ejector rod is pulled forwards, the elastic block is matched with the spring outside the spring rod to reset the double racks, then the transmission gear and the swing frames are driven to rotate, the two sets of swing frames are reset, the warning sign is deformed to be in the state of being convenient to store and carry, occupied space is greatly reduced, and the practicability is high. The problems that an existing warning board is not provided with a convenient and rapid combined containing structure, and rapid recycling is not convenient when the warning board is not used, so that occupied space is reduced are solved.

The invention provides a hydrology and water resource intelligent monitoring device for water conservancy irrigation, and relates to the technical field of monitoring devices, the hydrology and water resource intelligent monitoring device comprises a mounting seat A, a monitoring part, a first auxiliary part and a second auxiliary part; the mounting base A is of a rectangular base-shaped structure, two supporting plates are symmetrically welded to the bottom end face of the mounting base A, and the mounting base A is fixed to a river bank. Two ground nails are inserted into the mounting seat A in a penetrating manner, and the two ground nails are inserted into soil; a groove is formed in the mounting seat A, and the groove is of a rectangular groove-shaped structure; the groove is aligned with the edge position of the ground nail, and the groove forms a dismounting auxiliary structure of the ground nail, so that when the ground nail is dismounted, a crow bar can be inserted into the groove to pry out the ground nail, and the problem that firstly, cleaning of the monitoring head cannot be achieved under the condition that no electric element exists through structural improvement is solved; the cleaning structure cannot realize protection of the monitoring head; and secondly, the problem that in the using process, the device is prone to being poked by water waves and affected by sundries is solved.