54 results about "Slot insulation" patented technology

The invention discloses a bus duct structure and an assembly method thereof, and the bus duct structure comprises a housing which is provided with at least one installation groove. The insulating layer is attached to and covers the inner surface of the mounting groove; the insulating layer is arranged in the mounting groove, the groove opening of the mounting groove can allow the connecting row to enter or exit from the mounting groove along the depth direction of the mounting groove, the connecting row is embedded in the mounting groove through the groove opening of the mounting groove, and the connecting row is in contact with the insulating layer in an attached manner. According to the bus duct structure and the assembly method thereof provided by the invention, the assembly steps can be effectively simplified, and the temperature rise can be reduced.

The invention provides a framework splicing block, a motor framework, an iron core and a motor, relates to the technical field of motors, and solves the technical problems that a traditional splicing block motor is complex in assembly process, difficult in slot insulation installation and lack of an excitation adjusting function. The framework splicing block comprises a splicing block body, a buckling point structure is arranged at one end of the splicing block body, a buckling hole structure is arranged at the other end of the splicing block body, and the splicing block bodies are connected through cooperation. The splicing block body is further provided with an auxiliary winding receding groove and a silicon steel block groove, and the pointing angle of the silicon steel block groove is set according to needs so as to optimize the magnetic field layout. The groove insulation and the frameworks are integrally formed, and axial deviation is prevented through a concave-convex meshing structure of the upper framework and the lower framework. The device has the advantages of being simple in structure, convenient to assemble, high in efficiency and high in applicability.

The invention provides a rotor of a permanent magnet motor, a manufacturing method of the rotor, the permanent magnet motor and a wind generating set. The rotor includes: a rotating shaft; the iron core is assembled on the rotating shaft, and an iron core groove penetrating through the iron core in the axial direction of the rotor is formed in the iron core; the slot insulating part is provided with a hollow structure, at least one of the two axial ends of the slot insulating part is open, and the slot insulating part is inserted into the iron core slot; a seal disposed at the at least one of the two axial ends of the slot insulator; and the magnetic pole module is fixed in the groove insulating part through insulating impregnating adhesive. According to the rotor of the permanent magnet motor, the magnetic pole module can be effectively fixed, and meanwhile, the magnetic pole module is prevented from generating a thermal demagnetization phenomenon.

The invention belongs to the field of flat wire motors, and relates to a flat wire motor with multiple parallel branches and a winding connection method thereof. Comprising a stator core, slot insulation and a flat wire winding, the flat wire winding is a fractional slot concentrated winding with the span being 1, the flat wire winding adopts a rectangular wire, the wide edge of the rectangular wire is parallel to teeth, and the narrow edge of the rectangular wire is bent; a wire is wound into two layers along the groove height direction to form a winding element, and each tooth comprises two winding elements; the stator iron core and the flat wire winding are insulated through slot insulation; the even number of teeth of the same pole phase group are divided into two groups, and the upper-layer winding elements belonging to the same group of teeth are sequentially connected end to end to form an upper-layer coil group; the lower-layer winding elements are sequentially connected end to end to form a lower-layer coil group; the upper-layer coil assembly on the first group of teeth and the lower-layer coil assembly on the second group of teeth are connected end to end to form a first branch; the lower-layer coil assembly on the first group of teeth and the upper-layer coil assembly on the second group of teeth are connected end to end to form a second branch; the two branches are connected in parallel.

The invention discloses a medium-voltage transistor with a fin-shaped structure and a manufacturing method thereof, and the medium-voltage transistor with the fin-shaped structure comprises a substrate, a fin-shaped structure which protrudes out of one surface of the substrate, a gate structure which stretches across the fin-shaped structure, a source electrode which is arranged at one side of the gate structure and is embedded in the fin-shaped structure, a drain electrode is disposed on the other side of the gate structure and embedded in the fin-shaped structure. A second deep trench insulator is embedded in the substrate and adjacent to the source electrode and the drain electrode. An insulating structure is embedded in the fin-shaped structure below the gate structure. Wherein the insulating structure comprises a first deep trench insulator and a first shallow trench insulator enlarged from the side wall of the first deep trench insulator to the source electrode.

The utility model discloses an insulation paper flanging device of a stator slot insulation machine, and relates to the technical field of flanging devices. The first rotating shaft and the second rotating shaft are rotationally arranged on the support assembly; the two ends of the first rotating shaft are fixedly connected with the limiting rings; the two ends of the second rotating shaft are fixedly connected with the guide rings, groove insulation paper is arranged between the first rotating shaft and the second rotating shaft in a penetrating mode, and the guide rings are used for driving the two sides of the groove insulation paper to be folded and flanged; and the plurality of round rods are located on one side of the second rotating shaft, and the plurality of round rods are used for extruding the groove insulation paper. According to the flanging device, the first rotating shaft and the limiting ring are used for guiding, then the second rotating shaft and the guide ring are used for conveniently folding, finally the round bar is used for extruding and clinging, the whole structure is simple, the cost is low, meanwhile, abrasion to groove insulation paper can be reduced, and the machining condition can be conveniently observed.

A small-radius curve joint insulation device with guard rails comprises a spacer block lapped between two butt-joint steel rail interfaces, an insulation inner clamping plate is arranged between the spacer block and a steel rail, an insulation outer clamping plate opposite to the insulation inner clamping plate is arranged on the outer side of the steel rail, and a spacer piece is arranged between the butt-joint steel rail interfaces; the I-shaped section insulation is combined with the spacer block and the groove-shaped insulation, so that the problems of pulling deformation and insulation failure caused by uneven stress of double-section insulation are solved; the insulation assembly can be better attached to a track structure, stress is effectively dispersed, the impact resistance is improved, long-term stable operation is ensured, and the requirements of high-load and high-frequency train operation are met. According to the device, the mechanical strength of the insulation assembly is improved, the problems of deformation and aging caused by long-term use are reduced, the service life of equipment is prolonged, the stability and reliability of a track circuit are further improved, and safe and efficient operation of railway transportation is ensured.

The invention relates to a stator (1) for an electric machine (2), comprising a plurality of circumferentially distributed stator slots (3), which extend axially through the stator (1) and in each of which a plurality of electrical conductors (4) of a stator winding (5) are arranged, which electrical conductors exit the stator slots (3) axially on both sides, thereby forming a winding head (26a, 26b) in each case, wherein a slot insulation paper (6) is arranged in each case between a stator slot (3) and the conductors (4) accommodated therein, which slot insulation paper electrically insulates the stator slot (3) with respect to the conductors (4), and wherein the slot insulation papers (6) have a substantially U-shaped cross-sectional contour, having a base (7) which extends in the circumferential direction and from which a first free limb (8) and a second free limb (9) each extend away from the base (7) in the radial direction, and the slot insulation papers (6) protrude axially from the stator slots (3) with a protruding section (11) on at least one end face (10) of the stator, wherein the circumferential distance (12) between the first free limb (8) and the second free limb (9) increases in the protruding section (11) of the slot insulation papers (6) as the axial distance (13) increases when viewed from a stator slot (3).

The utility model discloses a combined self-temperature-limiting ribbon heater, which comprises two buses arranged in parallel, an insulating layer is coated outside a semiconductor heating core tape, a metal wire woven belt-shaped shielding layer is spirally wound outside the insulating layer, and an insulating outer sheath is coated outside the metal wire woven belt-shaped shielding layer; the top, the bottom and the two sides of the inner wall of the insulating layer are all provided with inner shearing grooves in the length direction, and the top, the bottom and the two sides of the inner wall of the insulating outer sheath are all provided with outer shearing grooves in the length direction. According to the utility model, the inner shearing groove and the outer shearing groove are arranged on the insulating layer and the insulating outer sheath, so that blades of scissors can be conveniently inserted, the metal wire woven belt-shaped shielding layer is reserved, the winding of the insulating adhesive tape is not limited by space, the operation is simpler, the winding, sealing and fixing are more facilitated, and the insulating layer and the insulating outer sheath are reserved; the insulating and wear-resisting effects are not influenced, and the use is safer.

The invention belongs to the technical field of motor manufacturing, and provides a blank cap type rotor lead assembly structure, which comprises a rotor, an insulating bush, an insulating lead screw, a connecting screw, a lead slot wedge, a choke plug and a lead, the choke plug is screwed in the choke plug mounting groove; the lead slot wedge comprises a plurality of slot wedge units; the rotor is internally provided with a lead mounting groove and a containing groove which are matched with the lead, the insulating bush is arranged in the containing groove, the choke plug abuts against the insulating bush, the side wall of the insulating bush is provided with an opening, the bottom end of the insulating bush is provided with a communication port, and the opening is communicated with the communication port; the connecting screw is arranged in the rotor, one end of the lead is connected to the connecting screw through the insulating lead screw, and the other end of the lead sequentially penetrates through the opening, the lead mounting groove and the slot wedge mounting groove and extends to the outer side of the rotor. According to the rotor lead assembly structure, the machining amount of the rotor is reduced, the rigidity of the rotor is enhanced, and due to the structural characteristics of the multi-section lead slot wedge, later unit maintenance and poor contact point inspection can be facilitated.

Semiconductor device with a first active component region (20) and with a second active component region (22), wherein the first active component region (20) and the second active component region (22) extend planarly along a first lateral direction (L1) and a second lateral direction (L2) differing from it; and with a trench insulation structure (10, 10') that electrically insulates the first active component region (20) from the second active component region (22) along the first lateral direction (L1) and has at least one electrically conductive side wall (14, 14', 14"); wherein the trench insulation structure (10, 10') comprises: - a continuously insulating trench insulation base wall (30); - several spaced-apart trench insulation sections (32a, 32b) with electrically conductive side wall sections (14a, 14b) located between them;- wherein the multiple trench insulation sections (32a, 32b) and the electrically conductive sidewall sections (14a, 14b) are spaced apart from the trench insulation base wall (30) (a, b).;

The invention discloses a one-branch odd-layer stator of a flat wire motor and a stator winding manufacturing method.The one-branch odd-layer stator of the flat wire motor comprises a stator iron core and a stator winding, the stator iron core comprises a stator inner circle and a stator outer circle, Q axially-through stator grooves are evenly formed in the inner circumference of the stator iron core in the circumferential direction, the stator slots are internally provided with slot insulation paper and flat wire windings, each stator slot is internally provided with an odd number of flat wire layers with the layer number of 2n-1, n is an integer greater than or equal to 1, the slot number of each pole and each phase of the stator is q = Q / (2p * m) = 2, Q is the slot number of the stator, p is the pole pair number of the motor, and m is the phase number of the motor; compared with the prior art, through the integral slots with the slot number q of each pole and each phase being 2 and the flat wire layer number 2n-1 being odd layers (n is an integer greater than or equal to 1), the limitation of even layers is broken, the number of turns of the winding is continuously adjustable, and the electromagnetic design freedom degree and the whole machine performance consistency are remarkably improved.

The utility model discloses a tool for cutting insulation paper of a stator slot of a wind driven generator. The tool comprises a tool rest, a blade and a handle, the handle is connected with the knife rest; the knife rest comprises a top frame, a middle frame and a bottom frame; the top frame comprises two strip-shaped top plates arranged at intervals, and the two sides of the top of the middle frame are fixedly connected with the two strip-shaped top plates correspondingly. The bottom side face of the middle frame is fixedly connected with a bottom frame, a gap used for installing a blade is formed between the bottom frame and the middle frame, and a first paper feeding gap and a second paper feeding gap used for embedding stator slot insulation paper are formed in the bottom frame in the length direction of the bottom frame; a mounting hole for mounting a blade is formed in the middle frame; the blade is arranged in a gap between the bottom frame and the middle frame, and the blade is connected with a mounting hole in the middle frame through a fastener; the tool can meet the requirement that the cut slot paper is lower than the outer surface of an iron core, the cutting size can be fixed, two pieces of slot paper on the two sides of a single slot can be cut at the same time, the production efficiency is improved, the cutting size is controlled, and the safety problem caused by directly using an art knife for cutting is avoided.

The invention relates to a stator (1) for an electric machine (2) comprising a plurality of circumferentially distributed stator slots (3) extending axially through the stator (1), in each of which a plurality of electrical conductors (4) of a stator winding (5) are arranged, which emerge axially from the stator slots (3) on both sides, forming a winding head (26a, 26b), wherein a slot insulating paper (6) is arranged between each stator slot (3) and the conductors (4) received therein, which electrically insulates the stator slot (3) from the conductors (4), and wherein the slot insulating papers (6) have a substantially U-shaped cross-sectional contour, with a circumferentially extending base (7) from which a first free leg (8) and a second free leg (9) extend radially away from the base (7).and the slot insulation papers (6) protrude axially from the stator slots (3) at at least one end face (10) of the stator (1) with a projection section (11), wherein in the projection section (11) of the slot insulation papers (6) the circumferential distance (12) between the first free leg (8) and the second free leg (9) increases with an axial distance (13) as viewed from a stator slot (3).

The utility model belongs to electrical equipment technical field discloses a kind of switch devices, including gas tank and the static contact and moving contact assembly being located in gas tank, moving contact assembly includes first insulating seat, insulating sliding sleeve and moving contact, the first end of first insulating seat towards static contact is equipped with the sliding slot of the first end sliding plug-in of insulating sliding sleeve, and the outer periphery between insulating sliding sleeve and the groove wall of sliding slot forms seal;Insulating sliding sleeve is equipped with first gas guide channel and mounting hole, and the first end of first gas guide channel is communicated with sliding slot, and the second end of first gas guide channel is towards static contact;The first end of moving contact is plugged into mounting hole, and the second end of moving contact is set towards static contact;Static contact is equipped with second gas guide channel, and the first end of second gas guide channel is set towards moving contact and penetrates the first end of static contact, and the second end of second gas guide channel penetrates the second end or outer periphery of static contact.The switch device provided by the utility model is favorable to improve the arc extinguishing performance when switch device closes.

The invention discloses a one-branch even-layer flat wire motor stator and a stator winding manufacturing method.The one-branch even-layer flat wire motor stator comprises a stator iron core and a stator winding, the stator iron core comprises a stator inner circle and a stator outer circle, Q axially-through stator grooves are evenly formed in the inner circumference of the stator iron core in the circumferential direction, slot insulation paper and a flat wire winding are arranged in each stator slot, the number of flat wire layers is an even number of 2n, n is an integer larger than or equal to 1, in the flat wire winding, the n layers close to the inner circle of the stator and the n layers close to the outer circle of the stator are staggered by one stator slot anticlockwise, and flat wire hairpins of the (n + 1) th layer and the nth layer adopt short-distance hairpins with the span being y1; through the arrangement that the n layers, close to the inner circle of the stator, of the flat wire winding and the n layers, close to the outer circle of the stator, of the flat wire winding are staggered by one groove anticlockwise, the number of the hairpins is n, the hairpins are consistent in direction, the number of special dies can be effectively reduced, and manufacturing cost is reduced.

The utility model provides a male joint double-wire clamp, which comprises a male joint body, the male joint body comprises a terminal formed by rubber coating, an insulating plastic block, a conductor elastic sheet, a positive wire clamp and a negative wire clamp, the positive wire clamp and the negative wire clamp are oppositely arranged on the insulating plastic block, the terminal is arranged at the bottom of the insulating plastic block and is integrally formed with the positive wire clamp, and the conductor elastic sheet is arranged on the conductor elastic sheet. The conductor elastic piece and the negative wire clamp are integrally formed, the conductor elastic piece extends to the outside of the insulating plastic block, the positive wire clamp and the negative wire clamp are each provided with a clamping groove for clamping a wire, the insulating plastic pipe body is arranged on the outer wall of the male head body in a sleeving and clamping mode, and a through hole for installing the male head body is formed in the insulating plastic pipe body in a penetrating mode. The insulating plastic tube body is sleeved with a copper tube, and a communication notch which allows the conductor elastic sheet to penetrate through and abuts against the copper tube is formed in the insulating plastic tube body in a penetrating mode. According to the male head double-wire clamp, rapid disassembly and assembly of wires can be realized, manpower is saved, and the overall installation efficiency is improved.

The motor assembly comprises a shell, a stator assembly and a rotor, the rotor is sleeved with the stator assembly, the shell is arranged on the periphery of the stator assembly, and a cooling cavity is formed between the shell and the stator assembly; the stator assembly comprises a stator, windings and an insulation structure, the stator is provided with a plurality of first mounting grooves distributed in the circumferential direction, the insulation structure is provided with a plurality of insulation plates distributed at intervals in the circumferential direction, the insulation plates are connected into the first mounting grooves in a one-to-one correspondence mode, each insulation plate is provided with a second mounting groove, and the windings comprise multiple layers. The multiple layers of windings are distributed in each second installation groove in the radial direction, a first cooling flow channel is formed between every two adjacent windings in the radial direction, cooling liquid enters the cooling cavity from one end of the shell and flows to the other end of the stator assembly in the axial direction from one end of the stator assembly in the axial direction through each first cooling flow channel, and uniform cooling of the multiple layers of windings is achieved. The problem that windings of different levels are heated unevenly is solved.

Even when assembling multiple sheet coils and multiple insulating plates, the design enables quick and easy assembly, while avoiding the generation of unnecessary defects and improving productivity. In addition, it suppresses variations in characteristics, contributing to improved quality and overall miniaturization. [Solution] A fitting groove 4 is provided on at least one opposing surface 3as of insulating plates 3x, 3a, 3y facing the coil surface of the sheet coil 2a..., and an inclined surface 5 is formed on the insulating plate 3... continuous with this fitting groove 4..., which is displaced by the vector Fsp caused by pressing in the direction Fs perpendicular to the surface of the sheet coil 2a..., thereby fitting the sheet coil 2a... into the fitting groove 4....

The invention discloses a one-branch odd-layer flat wire motor stator and a stator winding manufacturing method.The one-branch odd-layer flat wire motor stator comprises a stator iron core and a stator winding, the stator iron core comprises a stator inner circle and a stator outer circle, Q axially-through stator grooves are evenly formed in the inner circumference of the stator iron core in the circumferential direction, slot insulation paper and a flat wire winding are arranged in the stator slots, an odd number of flat wire layers with the number of 2n + 1 are arranged in each stator slot, n is an integer greater than or equal to 1, in the flat wire winding, the n layers close to the inner circle of the stator and the n + 1 layers close to the outer circle of the stator are staggered by one stator slot in the circumferential direction in the forward direction, short-distance hairpins with the span of y1 are adopted as hairpins of different layers of the nth layer and the n + 1 layer, and y is equal to Q / (2p); the number of pole pairs of the motor is p, the number of flat wire layers (2n + 1) is an odd number, and n is an integer greater than or equal to 1, so that the number of turns of the winding is flexibly configured, the defects of the flat wire winding of even layers are overcome, and the phenomenon of performance deviation is avoided.

The present application relates to a kind of stator slot insulation paper automatic switching mechanism and method, belong to insulation paper processing device technical field, including fixed plate;Isolation device is set on fixed plate;Feeding device is set on fixed plate, is located the both sides of isolation device respectively setting the feeding device;Detection device is set on fixed plate and is located the upper and lower sides of isolation device;First clamping device is set on fixed plate, the first clamping device is used for welding, clamps two insulation paper tape located at welding place second clamping device, is set on first clamping device, the second clamping device is used for feeding switch, respectively clamps two insulation paper on feeding device;Welding device is set on first clamping device, for welding two insulation paper tape on feeding device when feeding switch.It solves the long stop time of existing equipment during use, manual operation complex skill requirement and paper feeding jam and precision fluctuation and other technical problems.

The invention relates to the technical field of power equipment, and discloses a power converter which comprises a shell, a radiator, a power device, a heat insulation layer and an insulation heat conduction layer. The radiator comprises a substrate and a plurality of radiating fins; the substrate is installed and fixed on the shell, and the substrate and the shell define an accommodating space; the substrate is provided with a heat conduction surface and a heat dissipation surface which are oppositely arranged; the heat conduction face faces the interior of the containing space, the heat dissipation face faces the exterior of the containing space, and the multiple heat dissipation fins are all arranged on the heat dissipation face. The power device is accommodated in the accommodating space; the heat-insulating layer is arranged on the heat-conducting surface and is provided with a mounting groove; the insulating heat-conducting layer is accommodated in the mounting groove and is in contact with at least part of the surface of the power device and the heat-conducting surface. By means of the mode, the power converter can reduce heat conduction between the radiator and the interior of the containing space, so that the overall heat dissipation efficiency of the power converter is improved.

The invention belongs to the field of electrical insulating materials, and discloses a foaming epoxy resin composition for motor slot insulation, a foaming material and a preparation method of the foaming material. The foaming epoxy resin composition for motor slot insulation comprises a component A, a component B and a component C, the component A comprises bisphenol A epoxy resin, novolac epoxy resin and a solvent, the component B comprises epoxy resin and a foaming agent, and the component C comprises a latent curing agent, a solvent and an accelerant. The component A and the component C are uniformly mixed with the solvent to obtain an epoxy resin premixed solution, and then the epoxy resin premixed solution is uniformly mixed with the component B and the solvent. The viscosity of the epoxy resin polystyrene foam composition for motor slot insulation is 200-1000 mPa.s, the foaming multiple of a foaming material is 3-5 times, the bonding strength reaches up to 5 MPa or above at the normal temperature and still reaches 1.5 MPa or above at the high temperature of 200 DEG C, and the storage period at the normal temperature is long.

The utility model relates to the technical field of flame-retardant insulation between motor slots, and discloses flame-retardant insulation paper between motor slots, which comprises a main body mechanism and an insulation mechanism, the insulation mechanism is fixedly arranged in the main body mechanism, the main body mechanism comprises a motor, a motor slot and a stator iron core, the motor slot is fixedly arranged in the motor, and the stator iron core is arranged in the motor slot. And a stator iron core is fixedly mounted in the motor groove. The high-resistivity high-voltage transformer has electrical performance and excellent insulativity, can effectively isolate conductive parts between windings and an iron core in a motor slot and between different windings, prevents current leakage and abnormal conduction by means of high resistivity, avoids short-circuit faults, and ensures normal operation of a motor. For example, in a high-voltage motor, the motor can bear high voltage without being broken down, and safe operation of the motor is guaranteed.

The utility model discloses a T-shaped iron core and a stator, belonging to the motor field, comprising a main body and an insulating layer arranged on the surface of the main body, the main body comprises an outer end portion, an inner end portion and a connecting portion connecting the outer end portion and the inner end portion, the width of the connecting portion is smaller than the width of the outer end portion and the width of the inner end portion, a first insulating part of the insulating layer wraps the outer surface of the connecting part, a second insulating part wraps the bottom wall, facing the inner end part, of the outer end part, a third insulating part wraps the side wall, facing the outer end part, of the inner end part, a winding groove is formed among the first insulating part, the second insulating part and the third insulating part, and the thickness of the insulating layer is 0.08 mm-0. 2 mm. Through the design, the winding structure is simple, and the winding structure is easy to manufacture. The stator and rotor iron core insulation performance is improved, the thickness of the insulation layer is reduced by 70% compared with the traditional insulation layer thickness thin wall characteristic, the thickness of the insulation layer is greatly reduced, the stator and rotor T-shaped block iron cores are smaller in size and lighter after being spliced into a circle, the application scene is wider, and the special development requirements of miniaturization, light weight and performance of the motor iron core assembly are met.

The utility model provides a kind of silicon carbide VDMOS device shallow slot insulation terminal structure, comprising: silicon carbide substrate, drift layer, the underside of the drift layer is connected to the upper side of the silicon carbide substrate;The upper side of the drift layer is equipped with P+ trap area, first insulating medium area, first P+ doped area and cutoff ring contact area;The side of the P+ trap area is connected to the side of the first insulating medium area, the underside of the P+ trap area is connected to the first P+ doped area, the first insulating medium area is located in the first P+ doped area, and the cutoff ring contact area is located in the side of the first P+ doped area;Insulating layer, the underside of the insulating layer is connected to the upper side of the first insulating medium area, the upper side of the first P+ doped area and the upper side of the drift layer;Cutoff ring metal layer, the underside of the cutoff ring metal layer is connected to the upper side of the cutoff ring contact area, while guaranteeing terminal withstand voltage capacity, terminal structure width is saved.

The utility model provides an outdoor gapless metal oxide lightning protection device, which comprises an insulating shell with an opening at the upper end and a limiting circular groove at the lower end; a thin-wall fastener is coated at an opening at the upper end of the insulating shell; the first conduction piece comprises a first nut and a first screw rod, and the first screw rod penetrates out of the thin-wall fastener and is in insulation connection with the thin-wall fastener; the second conduction piece comprises a second nut and a second screw rod, and the second screw rod penetrates out of the limiting circular groove through the functional hole and is fixed; the resistor disc is concentrically arranged between the first conduction piece and the second conduction piece and is in contact with the first conduction piece and the second conduction piece; the connecting end of the cable is connected with the part, penetrating out of the thin-wall fastener, of the first screw rod; and the packaging cap is connected with the end part of the first screw rod. According to the utility model, a lightning protection device structure which is more suitable for outdoor operation is redesigned, so that the whole lightning protection device has higher-grade insulation, waterproof and dustproof effects and the like, can be independently installed outdoors without an additional outer box, and is safer and more reliable in operation.

The utility model discloses a controller suitable for switching among PLCs, comprising a controller which comprises a controller main body and a wiring terminal. The isolation assembly comprises first slots, insulation sleeves, fixing frames, first springs and L-shaped clamping blocks, the first slots are formed in the two sides of the controller body, the insulation sleeves are arranged on the outer sides of the wiring terminals in a sleeving mode, the fixing frames are fixed to the two ends of the insulation sleeves, one ends of the L-shaped clamping blocks are inserted into the fixing frames, and the other ends of the L-shaped clamping blocks are inserted into the first slots. The two ends of the first spring are fixed to the side edges of the two L-shaped clamping blocks correspondingly. The isolation assembly further comprises second inserting grooves, the second inserting grooves are formed in the upper end and the lower end of the inner side of the first inserting groove, and the front ends of the L-shaped clamping blocks are inserted into the second inserting grooves. According to the utility model, the problems that after the controller is used for a long time, the housing and the wiring terminals are aged or damaged by the external environment, the insulation performance at the wiring terminals is reduced, and the risk of electric leakage exists are solved.

Device for expanding axial ends of insulating papers (30) inserted into stator slots (21) of a stator lamination stack (20) of an electric machine, wherein the device has at least one application head (10) with a press punch (12), and wherein the press punch (12) has a shoulder region (14) which is designed such that, after a previously defined travel path of the application head (10) in the axial direction of the slot (21), a portion (31) of the slot insulating paper (30) which protrudes axially from this slot (21) can be expanded in the radial and / or circumferential direction, characterized in that at least one nozzle (13) is provided for blowing out a gaseous medium and is oriented in relation to the press punch (12) such that the gaseous medium can flow substantially in the axial direction in this slot (21).

The utility model relates to the technical field of compressors, in particular to an insulating support. The insulation support comprises an insulation ring, a plurality of tooth roots and a plurality of buckles, one end of each tooth root is arranged on the inner circumference of the insulation ring at intervals in the circumferential direction of the insulation ring, the other end of each tooth root is provided with two tooth tops in a protruding mode in the circumferential direction of the insulation ring, so that a first clamping groove is formed between every two adjacent tooth roots, and the buckles and the tooth tops are arranged in a one-to-one correspondence mode; the buckle is arranged on the tooth tip, and the groove insulator can be arranged in the first clamping groove so that the buckle can abut against the groove insulator. Compared with the prior art, the groove insulator is arranged in the first clamping groove and is clamped by the buckle, so that the groove insulator can be prevented from moving up and down in the winding process of the motor, the groove insulator is prevented from being wound into a winding, and normal work of the groove insulator is ensured.