177 results about "Arc column" patented technology

A low-voltage cabinet with a suspension structure relates to the technical field of low-voltage cabinets and comprises a supporting plate, a plurality of mounting plates are fixedly arranged on opposite side walls of the supporting plate, a supporting cylinder in threaded connection with the mounting plates penetrates through the ends of the mounting plates, an extrusion cylinder in threaded connection with the supporting cylinder is sleeved at the open end of the supporting cylinder, and a plurality of penetrating grooves are formed in the outer wall of the supporting cylinder in a penetrating manner. A rotating plate rotationally connected with the supporting cylinder is arranged in the penetrating groove, an arc-shaped column is fixedly connected to the end of the rotating plate, a plurality of protruding structures are arranged on the outer wall of the arc-shaped column, a moving column is horizontally and movably arranged in the supporting cylinder, a plurality of supporting strips in friction contact with the rotating plate are fixedly arranged on the outer wall of the moving column, and a compression spring is arranged in the supporting cylinder. The two ends of the compression spring abut against the movable column and the extrusion cylinder correspondingly, and an inner frame is fixedly arranged at the end of the supporting plate. According to the invention, the problem that the existing low-voltage cabinet is easy to loosen or fall off in a special environment is solved; and internal devices are difficult to disassemble and assemble. The fixing piece cannot be repeatedly used; and the dismounting process is tedious.

The present invention relates to the technical field of die stamping and forming of inertia rings, and discloses an inertia ring and its die stamping and welding forming process, wherein the inertia ring comprises: a plurality of arcuate cylinders, wherein the plurality of arcuate cylinders are sequentially connected end to end to form an inertia ring with a closed ring structure, wherein the outer ring sidewall and the inner ring sidewall of the arcuate cylinder are each provided with at least two connecting portions, and the arcuate cylinder comprises a plurality of sheets stacked along the axial direction of the inertia ring, wherein the plurality of sheets of the same arcuate cylinder are connected by connecting portions, and the plurality of sheets are formed by continuous stamping on a material strip. By using the inertia ring and its die stamping and welding forming process described in the present invention, the sheet is manufactured by continuously stamping and blanking on a metal steel strip, and then the arcuate cylinder and the inertia ring are formed by assembly processing, which greatly improves the utilization rate of the material strip and reduces the production cost of the inertia ring. Moreover, the sheet is produced by continuous stamping, and the production efficiency of the sheet is extremely high, thereby greatly improving the production efficiency of the inertia ring.

The multi-section assembly type energy-saving street lamp based on the BIM design comprises a lamp body, a first column body, second column bodies and a base, the number of the second column bodies is multiple, the first column body is composed of four first arc-shaped column plates, an expansion assembly is arranged in the middle of the upper surface of the base, and the first arc-shaped column plates are annularly arranged at equal intervals; the number of the lifting assemblies is multiple, one of the lifting assemblies is arranged on the periphery of the lower end of the lamp body, and the lifting assemblies and the second column bodies are arranged in pairs; and the number of the fixing assemblies is multiple, and the fixing assemblies and the lifting assembly are detachably arranged. The energy-saving street lamp has the advantages that through the modular design of the street lamp post body, carrying and transportation are convenient, corresponding damaged parts can be replaced conveniently, and therefore the practicability of the energy-saving street lamp is effectively improved, and the use cost of the street lamp is saved to a certain extent.

The application relates to the field of hardness detection facilities, in particular to a full-automatic hardness detection machine for double-row bearings, which comprises a machine base, a centering roller fixedly installed at the middle part of the upper end of the machine base, key teeth extended on the outer surface of the centering roller, a bearing shaft coaxially arranged at the side of the centering roller, a convex base extended at the upper end edge of the bearing shaft, a guide column fixedly installed at the upper end surface of the convex base, an elastic pressing base fixedly installed at the outer surface of the guide column, a locking piece arranged between the pressing base and the guide column, two arc-shaped columns symmetrically fixedly installed at the lower end of the pressing base, the center of the arc-shaped column being collinear with the center of the centering roller, and a detection piece installed at the rear edge of the upper end of the machine base. The application improves the convenience and the accuracy of the hardness detection, and ensures the normal operation of the detection.

The invention discloses a variable-airflow-protection gas nozzle device and a method for repairing a turbine blade through wire precise laser welding by using the variable-airflow-protection gas nozzle device, and belongs to the technical field of laser welding repairing of aero-engines and gas turbine blades. The problems that in an existing turbine blade laser welding repairing process, protection cannot be achieved at the same time, operation is easy, the welding process is monitored, oxidation of molten metal, pollution of metal steam and molten drop splashing are restrained, and irregular multi-profile laser welding quality protection cannot be achieved are solved. The device is composed of two arc-shaped columnar shells, a protective airflow net and a sealing cover, a first cavity, a second cavity and a third cavity are formed, and a plurality of gas outlets are formed in the protective airflow net; the method comprises the following steps: 1, clamping and setting; 2, symmetrically fixing the two sides of the blade clamp; and thirdly, wire precise laser welding repair is conducted under a protective gas hood. The invention relates to a gas nozzle device for variable gas flow protection and a method for repairing a turbine blade by using the gas nozzle device for wire precision laser welding.

In the vacuum arc-extinguishing chamber contact structure, a contact support is conductively and coaxially connected to the end portion of a conducting rod so as to support a first contact blade and a second contact blade, the first contact blade is coaxially connected with the contact support, the first contact blade is of a hollow annular structure, and the second contact blade is of a hollow annular structure. At least one annular cutting groove and at least one radial cutting groove are formed in the annular structure so as to segment the vacuum arc and hinder the radial movement and the annular movement of the arc column, the second contact blade is coaxially connected with the contact support and located in the center of the first contact blade, and the second contact blade is made of an arc ablation resistant material. The structure adopts a lightweight design, greatly reduces the mass of the contact, has the advantages of strong arc control capability, fast breaking speed, high mechanical strength, small steady-state heating and the like, and can meet the application requirements of large-current vacuum rapid breaking.

The invention provides a current and voltage characteristic generation method and device of a transient arc, which can be used in the technical field of power system relay protection, and the method comprises the steps: constructing an arc model through employing an external electromotive force source, an internal resistor, and a plasma with a preset radius, length and transient temperature; generating an energy conservation model and a current model according to the arc model; converting the energy conservation model to obtain a direct current arc temperature model; and utilizing the direct current arc temperature model, the current model and a pre-generated conductivity regression model to generate current and voltage characteristics of the arc. According to the method and device for generating the current and voltage characteristics of the transient arc, the non-transient stable change process of the temperature and the voltage drop of the arc column is obtained, the change process of the arc column is described more accurately, and research on the grounding fault arc resistance of a power distribution network is facilitated.

A hybrid ultra-high enthalpy arc heater comprises a rear electrode group, a contraction section, a compression channel, a throat, an expansion section, and a front electrode group. The arc cathode is attached to the electrode of the rear electrode group. The contraction section is mainly used to compress the arc column, completing the first plasma acceleration. The compression channel is used to compress and elongate the arc column, fully heating and ionizing the working gas. The airflow is concentrated to high pressure at the throat, completing the second plasma acceleration. The airflow completes the third plasma acceleration in the expansion section. The arc cathode is attached to the electrode terminal of the front electrode group, where the plasma is subjected to the Lorentz force, achieving the fourth acceleration and ultimately forming an ultra-high enthalpy flow field. This invention can be applied to the field of aerodynamic thermal ground simulation technology research, mainly providing medium and low pressure ultra-high enthalpy uniform flow fields.

The invention discloses a fault detection method and system based on lightning protection device performance data, and relates to the technical field of fault detection, and the method comprises the steps: capturing the airflow velocity and airflow pressure deviation of a multi-crack outlet of a lightning protection device under the impact of a high lightning current in real time, and collecting the arc length data of an outlet point of the lightning protection device, and the temperature and instantaneous arc resistance of the thermocouple induction arc column are calculated. According to the method, the normalized airflow energy density and arc energy density features are combined into the joint feature sequence, so that the coupling relationship between the airflow performance and the arc discharge behavior of the lightning protection device can be captured, and the global detection state of slow evolution and instantaneous mutation of the equipment fault is realized; the lightning stroke threat intensity can be independently reflected by defining the dynamic risk index, lightning stroke threat propagation and topological network characteristics are combined in combination with lightning protection device performance detection data, and therefore transmission effect modeling of the lightning stroke dynamic risk is achieved.

The utility model discloses an anti-shaking device for an elevator steel wire rope, and relates to the technical field of elevator steel wire ropes. The device comprises a connecting wall, one side of the connecting wall is provided with a first annular plate, one side of the first annular plate is provided with an annular groove and a notch communicated with the annular groove, two arc-shaped columns are placed in the annular groove, and the outer side walls of the arc-shaped columns are provided with arc-shaped plates; the second annular plate is arranged on the peripheral side of the first annular plate in a sleeving mode, and the inner side wall of the second annular plate is arranged on the outer side wall of the arc-shaped plate in a threaded fit mode. According to the steel wire rope, the arc-shaped plate is arranged, so that the arc-shaped plate positions the arc-shaped column in the annular groove under the action of the second annular plate, the shaking amplitude of the steel wire rope body is reduced through the second annular plate, the situation that a speed limiter in the prior art breaks down is reduced, and the safety of an elevator during use is improved.

The utility model discloses a slidable wear-resistant heat-insulating sliding block for sealing a furnace tube at the top of a heating furnace, which comprises an upper sliding block, the upper sliding block passes through a clamping groove at the lower end, a lower sliding block is arranged at the lower end of the upper sliding block, and a fixing strip is fixed at the lower end of the clamping groove. When a lower sliding block and a furnace tube with a large size are mounted, the furnace tube extrudes a lower circular frame, so that the lower circular frame extends through an arc-shaped column, a clamping plate extrudes a stainless steel spring through movement of the arc-shaped column, and meanwhile, a screw rod extends in length according to the diameter of the furnace tube through a fixing column; the fixing columns extrude the stainless steel springs through the clamping plates at the left end and the right end, the stainless steel springs release elastic force to enable the upper sliding block and the lower sliding block to be tightly attached to the outer wall of the furnace tube, and therefore the furnace tubes of different sizes can be installed, the connection stability between the sliding blocks and the furnace tubes can be ensured, and potential safety hazards are reduced.

The present application discloses a nozzle for a 3D printer, which relates to the technical field of 3D printer accessories. It includes a base. An elevating member is axially provided inside the base. At both ends of the outside of the base, sliding members are respectively arranged radially opposite and slidably. An inclined guide block structure is provided between the sliding member and the elevating member. The inclined guide block structures on the two sliding members are arranged in a staggered manner. Two feed pipes for conveying different materials are arranged inside the base. The end of the feed pipe is axially extended with an outer arc-shaped cover. The sliding member includes an inner arc-shaped column that acts radially on the inside of the outer arc-shaped cover. The outer arc-shaped cover and the inner arc-shaped column are connected to a heater. The middle part of the inner arc-shaped column is set to be concave. The technical advantages of the application are as follows: By setting the sliding member and the elevating member, when switching materials, the plasticized material in the acting section of the heater is isolated and stored by using the concave cavity, reducing the mixing rate during material switching and also reducing the material switching loss; The different attitude control of the bilateral sliding members can be realized by using a single elevating member and a spring group.

The invention discloses an environment-friendly gas-insulated ring main unit, which belongs to the technical field of switch devices and comprises an outer box, the outer box comprises a secondary gas chamber filled with inert gas, and a bus, a first adapter, a relay line bank, a sensing module, a second adapter and an output line bank are sequentially arranged in the secondary gas chamber from top to bottom. Through the arrangement of the outer box, the inner box and the arc extinguishers, the space in the outer box is divided into the first-stage gas chamber and the second-stage gas chamber, adapters needing arc extinguishing are independently arranged in the inner box with smaller volume, the influence among the adapters is avoided, the use amount of arc extinguishing gas can be reduced, the buffer space is increased, and the arc extinguishing efficiency is improved. And the arc extinguishing device can generate airflow at the position, where the electric arc is easily generated, of the adapter, and the flowing arc extinguishing gas can quickly take away heat generated by the electric arc and reduce the temperature of an arc column, so that the extinguishing of the electric arc is accelerated, and an effect of accelerating arc extinguishing is achieved by utilizing the dynamic arc extinguishing gas.

The invention discloses a floating ball valve which comprises a ball body, a cushion block and a valve rod. Wherein a groove is formed in the surface of the ball body; the cushion block is of an arc-shaped cylinder structure, and after the cushion block is embedded into the groove, the groove becomes a linear groove body; the valve rod is matched with the linear groove body, and the ball body is driven to rotate through the cushion block. According to the floating ball valve, the connecting structure of the valve rod and the ball body is optimized, the structure can effectively disperse loads borne when the valve rod rotates and when the groove face of the ball body makes linear contact with the valve rod, stress concentration is reduced, the reliability of the floating ball valve is improved, and the service life of the floating ball valve is prolonged. And the connection and disassembly processes of the valve rod and the ball body are easy to operate, maintenance and repair are convenient, and the maintenance cost is reduced.

The invention relates to a quick mounting structure for a building external wall insulation board. The quick mounting structure comprises a mounting plate, a mounting support, a mounting screw rod and a linkage mounting mechanism, the mounting support is vertically and fixedly arranged on one side of the mounting plate, and the mounting screw is rotationally connected to the mounting support; a threaded sleeve block is screwed on the mounting screw rod; the linkage mounting mechanism comprises a support frame, a guide hole column and an arc-shaped column; the support frame is horizontally and fixedly connected to the threaded sleeve block; the arc-shaped column is fixedly arranged on the other side of the mounting plate, the guide hole column is connected to the arc-shaped column in a sliding mode, and the end of the guide hole column is horizontally connected to the supporting frame in a sliding mode; a plurality of heat preservation plate mounting blocks are arranged on the guide hole columns at intervals and used for being connected with heat preservation plates to be mounted. According to the rapid installation structure for the building external wall insulation board, the insulation board installation block on the guide hole column in the linkage installation mechanism can be finally driven to move upwards and rotate through rotation of the installation screw rod, the insulation board installation block is adjusted to the installation position in a linkage mode, and therefore rapid installation of the insulation board is achieved.

The invention relates to a device for improving the through-flow arc control of a high-voltage large-capacity gas gap switch, and the device comprises a test cavity which is used for providing a controllable gas insulation environment and serves as a carrier of a high-voltage large-current discharge test; the trigger discharge loop is used for generating a high-voltage pulse to drive the trigger cavity to generate plasma jet and induce the main gap to be broken down and conducted at a preset moment; and the large current generation loop is used for storing energy and generating a high-energy fault current simulating an actual working condition after the main gap is conducted. A main gap can form a stable and controllable initial discharge channel under high-voltage and large-gap conditions, active constraint is carried out on an arc movement track in a high-energy fault current flowing stage, and long-term residence of an arc root in a local area of an electrode is avoided, so that the ablation degree of the electrode is remarkably reduced, the through-flow life is prolonged, and meanwhile, the service life of the electrode is prolonged. A transverse magnetic field generated by the spiral groove structure enables an electric arc to rotate along the surface of the electrode, the stability of an arc column is effectively improved, and the reliability under the condition of large current flow is improved.

According to the motorcycle LED headlamp with the auxiliary light source, a main light source and an auxiliary light source are installed on a main PCB and a side PCB respectively, the main light source is responsible for irradiating light forwards to form a traditional paving effect, and the auxiliary light source is installed on the side portion to irradiate the light source towards the side edge. A paving effect can be formed at the position close to the front of a vehicle through reflection of the reflecting cover, driving safety at night is improved, and for the low-power heat dissipation problem that a fan does not need to be installed, a heat dissipation aluminum piece in the LED lamp is provided with a heat dissipation base and a heat dissipation arc column, heat dissipation arc grooves are formed in the outer side of the heat dissipation arc column, and a heat dissipation fin effect is formed between the heat dissipation arc grooves. The heat dissipation area is greatly increased, the heat is transmitted outwards through a plurality of heat dissipation holes, and an L-shaped red copper heat pipe is arranged at the lower end of the main PCB on the inner side so that the heat of the main PCB can be further transmitted to the heat dissipation aluminum piece in an accelerated mode.

The utility model provides a special cable for a car washer motor, which comprises a cylindrical rubber block, a connecting base block and a metal pressing plate, the cylindrical rubber block is connected to the center of the connecting base block in a penetrating manner, and a first arc-shaped column head is arranged on one side of the top of the connecting base block on the cylindrical rubber block. A second arc-shaped column head is arranged on the other side, connected with the base block, of the cylindrical rubber block, threaded hole grooves are formed in the centers of one ends of the tops of the first arc-shaped column head and the second arc-shaped column head correspondingly, a first sealing ring is connected to the portion, in the threaded hole groove, of the first arc-shaped column head, and a first sealing ring is connected to one end of the top of the first sealing ring; and a second sealing ring is connected in the threaded hole groove on the second arc-shaped column head. The first arc-shaped column head and the second arc-shaped column head on the cylindrical rubber block are connected with the cable in a penetrating mode, the connecting positions of the cable and the two ends of the cylindrical rubber block are stably sealed through the first sealing ring, the first sealing ring, the second sealing ring and the second sealing ring, the sealing performance is improved, the structure is stable, installation is convenient and fast, and the practicability is high.

The utility model discloses a transformer heat dissipation shell, which relates to the technical field of transformers and comprises a heat absorption plate, vertical plates are clamped on two sides of the heat absorption plate through clamping strips, a snakelike cooling pipe is arranged on one side of the heat absorption plate, a plurality of heat dissipation fins are arranged on one side of the heat absorption plate, and connecting components are arranged at two ends of the snakelike cooling pipe, so that cold water can be conveyed conveniently. Two rectangular grooves are formed in the vertical plate, inserting rods are arranged in the rectangular grooves in a sliding mode, inserting holes matched with the inserting rods are formed in the clamping strips, two arc-shaped columns are arranged on the surfaces of the inserting rods, limiting balls are arranged at the bottoms of the two arc-shaped columns in a sliding mode, and supporting assemblies are arranged at the bottoms of the limiting balls; the beneficial effects of the utility model are that the heat absorbing plate and the snake-shaped cooling pipe on the surface can be conveniently disassembled subsequently, the heat absorbing plate and the snake-shaped cooling pipe can be conveniently maintained subsequently, the heat dissipation shell can be disassembled without additional operation subsequently, and the working efficiency is improved; and the transformer can be cooled conveniently, and the heat dissipation effect is improved.

The utility model discloses a floating ball valve which comprises a ball body, a cushion block and a valve rod. Wherein a groove is formed in the surface of the ball body; the cushion block is of an arc-shaped cylinder structure, and after the cushion block is embedded into the groove, the groove becomes a linear groove body; the valve rod is matched with the linear groove body, and the ball body is driven to rotate through the cushion block. According to the floating ball valve, the connecting structure of the valve rod and the ball body is optimized, the structure can effectively disperse loads borne when the valve rod rotates and when the groove face of the ball body makes linear contact with the valve rod, stress concentration is reduced, the reliability of the floating ball valve is improved, and the service life of the floating ball valve is prolonged. And the connection and disassembly processes of the valve rod and the ball body are easy to operate, maintenance and repair are convenient, and the maintenance cost is reduced.

The present invention discloses a diversion and guiding mechanism for an arc machining flushing liquid, which relates to the field of arc machining technology and includes a shell, an active mechanism, a driven mechanism, a diversion mechanism, and an electrode; the active mechanism is used to drive the driven mechanism; the driven mechanism is used to drive the electrode; a flushing liquid inlet is provided on the shell, a diversion mechanism is provided between the flushing liquid inlet and the top of the electrode, a plurality of through inner holes are provided on the electrode, and the diversion mechanism is used to control the flushing liquid to enter different inner holes. The motor is directly connected to the diversion block for angle control, and the rotation of the diversion block can be more precise and rapid. Part of the internal flushing liquid is diverted to the contact position between the electrode and the workpiece through the guide baffle, thereby enhancing the impact force of the fluid flushing the arc; the lower layer of the guide baffle is made of insulating material to avoid harmful discharge. The diversion and guiding functions both act on the internal flushing liquid. A reasonable and effective control scheme for the internal flushing liquid can help the arc technology be put into practice in complex morphology processing and prevent harmful arc columns from damaging the workpiece and the electrode.

The invention relates to the technical field of inertia rings, and discloses a high-precision inertia ring and a circumferential mass compensation forming process thereof.The high-precision inertia ring comprises a plurality of arc-shaped cylinders, the multiple arc-shaped cylinders are sequentially connected end to end to form the inertia ring of a closed annular structure, every two adjacent arc-shaped cylinders are fixedly connected through a welding seam at the splicing position, and a containing groove is formed in the splicing position; the containing groove is filled with a balance weight piece, and the balance weight piece is used for correcting the uniformity of mass distribution in the circumferential direction of the inertia ring. According to the high-precision inertia ring and the circumferential mass compensation forming process thereof, the accommodating groove at the splicing part is filled with the counterweight piece capable of compensating the mass deviation, so that the circumferential mass of the inertia ring is accurately adjusted; the technical problem of uneven circumferential mass distribution caused by factors such as welding process fluctuation, uneven solder filling and operation difference of an existing inertia ring formed through stamping and welding is solved from the structural level, and the dynamic balance precision and the operation stability of the inertia ring during high-speed rotation are remarkably improved.

The invention relates to the technical field of gas turbines, and discloses an air inlet system silencing sheet installation protection structure which comprises a first installation frame and further comprises installation shells fixed to the top of the first installation frame, the tops of the installation shells are fixedly connected with a second installation frame, a silencing sheet body is arranged between the opposite sides of the two installation shells, and the second installation frame is fixedly connected with the second installation frame. Arc-shaped columns are fixedly connected to the two sides of the silencing sheet body; the positioning shell is fixed on the front side of the second mounting frame. In the running process of the system, the polytetrafluoroethylene can limit vibration of the silencing piece, a certain buffering effect is achieved, the silencing piece is prevented from knocking and damaging a channel paint film, meanwhile, particles in external dust can be effectively filtered and blocked through the clamping grooves formed in the protective cover shell and the filter plate in cooperation, the filter plate is prevented from being damaged by the particles, and the service life of the system is prolonged. And through the arrangement of the positioning assembly, the silencing sheet body can be conveniently mounted and positioned, the mounting and positioning difficulty is reduced, and meanwhile, the dismounting and mounting convenience can be improved.

The utility model provides an adapter of a notebook computer power adapter with variable pins, which comprises a plug shell (1), a rotating hub, a hub seat, a triangular concave part, a triangular rib, a convex drum, a rectangular hole, a circular truncated cone opening, a handle, a double-spring piece, an arc column rib, a blocking rib, a sliding groove, a sliding rail, a spring piece bayonet, a fork-shaped spring piece, an arc-shaped elastic piece, a gap, a pointer, a positioning block, a positioning mark and a positioning groove. The rotating hub, the hand pinching part, the double-spring piece, the blocking rib, the sliding groove and the sliding rail form a variable mechanism, the triangular concave part, the triangular rib, the pointer and the positioning mark form a positioning mechanism, the null line pin, the live wire pin and the ground wire pin are variable plugs, the sliding rail is arranged on the upper portion of an inner cavity of the plug shell, and when the converter is connected with a wall power panel, the number of the pins of the converter can be changed. A two-hole power supply panel can be inserted, and a three-hole power supply panel can also be inserted.

A gas nozzle device with variable airflow protection and a method for using the same to repair turbine blades with precision laser welding of wire materials, the present invention belongs to the technical field of laser welding repair of aircraft engines and gas turbine blades. It solves the problem that the protection in the existing turbine blade laser welding repair process cannot simultaneously achieve simple operation, monitor the welding process, inhibit the oxidation of molten metal, metal vapor contamination and droplet splashing, as well as the quality of irregular multi-surface laser welding protection. The device consists of two arc-shaped cylindrical shells, a protective airflow net and a sealing cover, forming a first chamber, a second chamber and a third chamber, and a plurality of gas outlets are provided on the protective airflow net; the method is as follows: 1. Clamping and setting; 2. Symmetrical fixing on both sides of the blade clamping; 3. Performing precision laser welding repair with wire materials under a protective gas hood. The present invention is a gas nozzle device with variable airflow protection and using the same to repair turbine blades with precision laser welding of wire materials.

The utility model particularly relates to a ceramic surface of a vehicle stopping pile. At present, some vehicle stopping piles on roads are made of steel pipes, some vehicle stopping piles are made of stainless steel pipes, and most of the vehicle stopping piles are made of artificial stones. The products have the defects of single shape, gray surface and unattractive appearance. The utility model is improved based on the following technical scheme. The vehicle stopping pile is made into a ceramic surface, and the shape of a pile body of the ceramic surface can be a cylinder, an arc column, a trilateral column and a polygonal column. About one fifth of the pile body is buried underground for independent use. The ceramic surface is provided with color patterns and characters. A ceramic surface blank is formed by adopting a hollow grouting method, glaze is applied to the blank, and applique is carried out on the ceramic surface. The ceramic surface of the vehicle stopping pile manufactured according to the technical scheme is very attractive and has a long-lasting attractive effect.

The utility model relates to the technical field of electromagnetic valve coils, and discloses a high-sealing hydraulic electromagnetic valve coil which comprises a coil body, a mounting hole is formed in the coil body, a sealing cylinder is arranged on the inner wall of the mounting hole in an attached mode, and an annular groove is formed in the surface of the sealing cylinder. First arc-shaped columns are arranged on the inner wall of the annular groove and the upper surface of the coil body in an attached mode. Through the cooperation of the annular groove, the first arc-shaped column, the second arc-shaped column, the fixing support and the second U-shaped plate, the sealing cylinder and the arc-shaped sealing strip can be fixed to the coil body, meanwhile, when the fixing column on the fixing support is separated from the second U-shaped plate, the sealing cylinder and the arc-shaped sealing strip can be directly detached from the coil body, and therefore the sealing cylinder and the arc-shaped sealing strip can be conveniently detached. Therefore, when a maintainer replaces the sealing cylinder and the arc-shaped sealing strip, the hydraulic electromagnetic valve coil does not need to be detached from the electromagnetic valve, and the sealing cylinder and the arc-shaped sealing strip are more convenient to replace.

The application discloses a PTC heating device, which comprises a heating core, a heat-conducting aluminum pipe and a radiator, and an arc column reinforcing rib is arranged on one side of the heat-conducting aluminum pipe of the heating device. The application improves the strength of the heating device, eliminates the hidden danger of the interference between a fuse lead wire and a body, and meets a series of structural, technological and reliability effects such as compact structure, reliable work and safe use.

The utility model discloses an installation device for an arc-shaped support in a cable tunnel. The installation device comprises an installation device body located in the tunnel and an arc-shaped stand column connected with the installation device body. The mounting equipment body comprises a base frame and a hanging support rotating mechanism connected with the base frame; the hanging support rotating mechanism comprises a cross-shaped lifting assembly which comprises a lifting fixing frame connected with the base frame, a lifting moving frame matched with the lifting fixing frame and a cross-shaped sliding frame installed at the end of the lifting moving frame and in sliding fit with the base frame, and a lifting vertical lifting push rod with the output end connected with the lifting moving frame is arranged in the lifting fixing frame; the rotary opening assemblies are symmetrically arranged on the two sides of the cross-shaped lifting assembly. Compared with traditional lifting equipment, the arc-shaped support can be automatically installed, the installation efficiency is improved, the installation cost is reduced, narrow space is utilized, adverse factors are converted into favorable factors, the base frame has certain compression resistance and bending resistance due to the fact that the base frame is upwards ejected and downwards pressed, and the effects of balancing weight and stable lifting are achieved.