607 results about "Back-up ring" patented technology

The invention relates to the technical field of water conservancy project cofferdam construction, and discloses a cofferdam backfill supporting device which comprises a filler pipeline, a guide part is arranged on the filler pipeline, a positioning groove is formed in the outer wall of the filler pipeline, a supporting part is arranged on the filler pipeline, and the supporting part comprises a first supporting ring and a second supporting ring. The first supporting ring is slidably connected with the outer wall of the filling pipeline, a support is fixedly connected between the first supporting ring and the second supporting ring, a positioning part is arranged on the support and comprises a rod sleeve, and the rod sleeve is fixedly connected to the support. The guiding part and the supporting part are matched to avoid inclination and deviation of the pipeline, the positioning part and the calibration part are matched to improve the hole site calibration precision, the limiting part achieves conflict-free switching between the calibration part and backfill material injection, finally it is guaranteed that backfill materials are evenly filled, the problems of scattering and cavities do not exist, and the requirements for cofferdam impermeability and structural stability are met.

The utility model relates to the technical field of cable installation and arrangement, and discloses a single-core indoor and outdoor cold shrinkage terminal head, which comprises an insulating tube, a supporting core rope is arranged in the middle of the insulating tube, a sealing ring is fixedly connected to the periphery of the insulating tube, a rubber sleeve is fixedly connected to the middle of the sealing ring, a sleeve is fixedly connected to the middle of the insulating tube, and the rubber sleeve is fixedly connected to the middle of the sleeve. A sealing film is fixedly connected to the middle of the sleeve, a sliding pipe is connected to the middle of the sleeve in a sliding mode, a clamping assembly is installed in the middle of the sleeve and comprises a supporting clamping ring, and the supporting clamping ring is fixedly connected to the middle of the sleeve. According to the utility model, firstly, the insulating tube is sleeved on the cable joint, and after the supporting core rope is pulled and drawn away, the rubber sleeve is pressed, so that the supporting ring is pushed, the sliding tube on the supporting ring can be inserted into the sleeve and the sealing film is punctured, and then the stability and the service life of the cold shrink terminal after installation are ensured under the filling and adhesion of glue.

The invention relates to the field of diaphragm valve control mechanisms, in particular to a valve actuator and a using method thereof.The valve actuator comprises a valve body and a valve deck fixed to the top of the valve body and further comprises an actuator mechanism, and the actuator mechanism comprises a lower cylinder cover, a cylinder body and an upper cylinder cover which are vertically communicated in sequence; a piston rod penetrating out of the valve deck downwards is arranged in the middle of the upper cylinder cover in a penetrating mode, and the cylinder body is divided into an upper air chamber and a lower air chamber by a piston disc outside the piston rod. The rotatable sliding ring is arranged to be communicated with the upper air pipe connector and the lower air pipe connector, two-degree-of-freedom flexible adjustment of the circumferential position and the rotation direction of the air pipe connector is achieved, and the problem of installation adaptation caused by the fact that the position of an existing actuator air pipe connector is fixed is solved; the sliding ring is unlocked by squeezing the two sets of elastic pieces to be close to the supporting ring, the air pipe connector is driven to adjust the circumferential distribution position so as to adapt to different circumferential layouts of external air path connectors, and operation is convenient and fast.

The invention relates to a novel oil seal for a bearing unit, which comprises an external sealing element and an internal sealing element which can rotate relatively, the external sealing element is hermetically connected with the inner wall of a bearing outer ring, and the internal sealing element is hermetically connected with a bearing inner ring; a first protective barrier is formed through the first bend arranged on the first metal framework, so that external silt is not prone to directly impacting the second sealing lip. And then through three-stage sealing of the second sealing lip, the third sealing lip and the fourth sealing lip, water vapor is prevented from entering. Three contact lips are arranged on the first sealing lip, and three-level sealing is achieved. The bearing further has the sealing effect that an integrated structure is formed by sealing of the annular protrusion and the bearing inner ring, sealing of the first sealing layer and the bearing outer ring and sealing of the second sealing layer, and a third sealing layer at the end of the supporting ring enables the first rubber layer to be connected with the supporting ring more firmly. The whole oil seal is provided with 11 sealing structures, rubber sealing is arranged on the outer periphery, the inner periphery and the end face, and water vapor can be prevented from entering the oil seal.

The utility model discloses a rotary hand handle storage box relates to hand handle storage field, including show shelf, and the top of show shelf is inserted with the seal cover, and the seal cover is transparent acrylic material, and show shelf includes base structure, and the top fixed with the decoration frame of base structure, and base structure includes rotary base, and rotary base includes base main part, and the inner wall fixed connection of base main part bottom end has the clamping block, and the clamping block is equipped with a plurality of groups and is evenly arranged in the inner wall of base main part bottom end, and the inside clamping of rotary base bottom end has the fixed base, and the rotatable connection of fixed base and rotary base has the support ring, and the surface of support ring is provided with a plurality of groups of holes, and every group of holes all installs the ball bearing, and this show shelf is the design of rotatable bottom, and is built -in a plurality of groups of evenly arranged ball bearings, and when rotating, the ball bearing is in the airtight space inside base structure, and the whole is more beautiful, and also can not appear the situation of ball bearing falling, and the whole rotation process is more smooth and stable.

The present application relates to the field of metal plate correction, especially to a metal plate clamping and correcting device, comprising: at least two groups of mounting racks arranged on the same horizontal plane and a middle shaft rotatably connected to the mounting racks, a plurality of extrusion rings being detachably arranged on the outer side of the middle shaft, each extrusion ring comprising a positioning plate and an adjusting plate, the positioning plate and the adjusting plate being connected end to end to form a ring structure, one end of the adjusting plate being inserted into the interior of the positioning plate to adjust the radius of the ring structure formed by the positioning plate and the adjusting plate, a filling assembly being arranged in the interior of the positioning plate and the adjusting plate to support the inner wall of the ring structure, and the filling assembly being deformed along with the ring structure. The extrusion ring is arranged to perform extrusion, which is different from the pressure roller, and the extrusion effect is formed by the detachable extrusion ring. Since the extrusion ring is detachable, the extrusion can be performed only on the curved part during actual use, thereby ensuring the clamping and correcting effect.

The invention discloses a multi-face-attached anti-deformation silicone tube sealing ring, and belongs to the technical field of sealing washs.The multi-face-attached anti-deformation silicone tube sealing ring comprises a base body, a connecting part is arranged at the top of the base body, an attaching part is arranged on the inner side of the upper portion of the connecting part, a sealing part is arranged on the inner side of the attaching part, and the outer side of the attaching part and the inner side of the connecting part are attached to each other; the outer side of the sealing part and the inner side of the attaching part are attached to each other, a first supporting ring is arranged in the connecting part, a second supporting ring is arranged in the attaching part, a third supporting ring is arranged in the sealing part, and a supporting assembly for supporting the base body is arranged in the base body. The base body and the connecting part are attached to the outer side of the silicone tube, the attaching part is attached to the end of the silicone tube, and the sealing part is attached to the inner side of the silicone tube, so that the effect of attaching multiple faces of the silicone tube is achieved, a sealed closed loop can be formed, and the situation that a medium leaks from a gap between the outer wall of the tube and the sealing ring, a gap between the end face of the tube and a gap between the inner wall of the tube and the connector is avoided; and a leakage blind area is eliminated.

The damping-adjustable pull rod comprises an outer rod and an inner rod which are matched with each other, the inner rod is coaxially nested in the outer rod and can slide relatively, a fixing screw is sleeved between the outer rod and the inner rod in a matched mode, and an annular cavity is formed between the outer rod and the inner rod. A first damping spring and a second damping spring are installed at the two ends of the annular cavity respectively, a supporting ring is arranged in the middle of the annular cavity and located between the first damping spring and the second damping spring, the supporting ring is connected with the outer wall of the head of the inner rod through threads, and an elastic ring is installed on the outer surface of the supporting ring in a matched mode; the outer surface of the supporting ring is in interference fit with the inner wall of the outer rod through the elastic effect, continuous friction resistance is generated, damping can be provided in the whole telescopic movement process, particularly, effective buffering is provided at two limiting positions, stable friction damping is provided in the middle stroke, and the damping size can be adjusted according to actual needs.

The utility model discloses a kind of electromagnetic valve sealing ring and support ring assembly equipment, including workbench, injection molding assembly placement tooling is provided on the workbench, sealing ring feeding assembly, sealing ring moves and transfers assembly component, support ring feeding assembly and support ring moves and transfers assembly component.This scheme is integrated by injection molding assembly placement tooling, sealing ring feeding assembly, sealing ring moves and transfers assembly component, support ring feeding assembly and support ring moves and transfers assembly component, the automatic assembly to sealing ring and support ring is realized, effectively promote production quality and production efficiency.

The utility model discloses a shockproof damping device for a bridge, and relates to the technical field of bridge damping. The damping device comprises two mounting plates, a mounting seat is fixedly connected between the two mounting plates, a viscous damper is movably connected to the inner side of the mounting seat through a rotating shaft, and a damping support is fixedly connected to one side of each mounting plate; a main buffering assembly is arranged on one side of the mounting plate and comprises a supporting ring fixedly connected to one side of the damping support. Through the coupling effect of the friction dampers of the main buffering assembly and the first springs, dual energy consumption of coulomb friction and elastic deformation is generated in the initial vibration stage, the peak acceleration is effectively reduced, the eight friction dampers distributed at equal angles form an annular buffering array, omni-directional dissipation of horizontal vibration in any direction is achieved, and the vibration damping effect is improved. The three-dimensional supporting structure of the damping support is matched, and the stress concentration phenomenon of a traditional one-way damper is eliminated.

This invention discloses a high-viscosity heavy oil heat exchanger based on a spin-flow tortuous tube, comprising a shell, tube-side inlet and outlet, and shell-side inlet and outlet; a heat exchange tube bundle connected between the tube-side inlet and outlet, the heat exchange tube bundle being composed of multiple U-shaped spin-flow tortuous tubes arranged side by side; each spin-flow tortuous tube includes a tortuous tube inlet, a spiral guide rib, a tortuous tube outlet, and a vibration-damping support ring, the spiral guide rib being disposed on the inner wall of the vibration-damping support ring, the pitch of the spiral guide rib increasing linearly along the heavy oil flow direction; multiple baffles are uniformly arranged circumferentially on the heat exchange tube bundle, each baffle having multiple tube holes, the spin-flow tortuous tubes passing through the tube holes of the baffles and fitting with the clearance; an online cleaning device is installed on the shell, the online cleaning device monitoring the scaling condition through an acoustic wave monitor, and the control unit controlling a pulse generator to emit pulse waves to clean the scaling. This invention can achieve efficient and stable heat exchange of high-viscosity heavy oil under low energy consumption conditions, while simultaneously solving the performance degradation problem caused by scaling through an intelligent cleaning system.

The utility model discloses a high-strength high-temperature-resistant rubber sealing element which comprises a sealing ring, a bayonet, a shaft hole and a supporting sealing structure. After the sealing ring is installed and a shaft is in butt joint with the interior of the shaft hole, the supporting ring can support the shaft so as to ensure that the shaft is high in stability and good in supporting performance after being installed in the shaft hole, the stability of the shaft after being installed in the shaft hole is ensured, then the threaded pressing ring is rotated, and due to the fact that the threaded pressing ring is in threaded connection with the connecting screw rod, when the threaded pressing ring is rotated, the shaft is not damaged. The threaded pressing ring can push and press the pressing plate so as to extrude the sealing ring, the sealing ring is stressed to deform and then is pressed on the surface of the shaft, the sealing performance is improved, when the sealing ring is pushed and pressed by the pressing plate, under the action of the notch, the port part of the sealing ring can contract and is tightly pressed on the shaft, and the sealing capacity is further improved.

The utility model discloses a breaker electric operation mechanism with long service life, comprising a mounting rack, a driving motor, a transmission assembly, a support wheel, a main shaft and a planetary gear assembly, the driving motor is mounted on the mounting rack, the support wheel is rotatably arranged on the mounting rack through the main shaft, and the driving motor is connected with the main shaft through the transmission assembly. The planetary gear assembly comprises an inner gear and multiple sets of duplex planetary gears, a transmission gear is arranged on the main shaft, the inner gear is in meshed connection with the three sets of duplex planetary gears, a gear shaft is arranged on one side of the inner gear, a cover plate is arranged on one side of the mounting frame, and a shaft hole is formed in the cover plate; and the supporting ring is made of a plastic material, is arranged on the shaft hole of the cover plate, and is sleeved on the periphery of the gear shaft. The plastic part is arranged on the shaft hole of the cover plate and used for being matched with the gear shaft, the perpendicularity of the gear shaft of the inner gear is guaranteed, abrasion between the cover plate of the mounting frame and the gear shaft of the inner gear is reduced, and the service life of the circuit breaker electric operation mechanism is prolonged.

This invention discloses a tunnel segment damage repair device, comprising a base plate, clamping devices on both sides of the base plate, and a supporting excavation device on the upper side of the base plate. The supporting excavation device includes a support ring with stepped holes and anchor rods inside the stepped holes. A circular shaft is rotatably connected to the base plate, and the circular shaft is driven to rotate and move axially by a driving device. A disc is fixedly connected to the upper end of the circular shaft, and the disc has a slag discharge channel. A first blade is fixedly connected to the side wall of the slag discharge channel. A sliding groove is provided at the bottom of the disc, and a sliding plate is slidably connected within the sliding groove. A second blade is fixedly connected to the outer end of the sliding plate. A sliding block is slidably connected to the support ring, and a support rod is hinged between the sliding block and the sliding plate. This invention allows the support wheel to continue rolling onto a second arc block. Because the second arc block has the largest diameter, the outer contour of the second blade is the largest, exceeding the diameter of the segment rupture. This is suitable for excavation operations in confined spaces, facilitating the subsequent formation of stepped pouring blocks, and providing greater support strength than direct filling repair methods.

The utility model discloses a kind of for engineering geological survey drilling anti-toppling device, it is related to geological survey technical field, including support ring and adjusting assembly;Support ring: inside fixed ring is fixed, inside the gap between fixed ring and support ring is equipped with poking assembly, support drilling machine by being set support ring;Adjusting assembly: including connecting groove, fixed column, gear ring and support strip, the circumferential surface of support ring is equipped with three corresponding connecting grooves, the inside fixed column of connecting groove, the circumferential surface of fixed column is rotatably connected with gear ring, the surface of gear ring is fixed with support strip, the poking assembly is connected with three gear rings, the side surface of support strip is equipped with support assembly, the lower end of support assembly is equipped with moving assembly, can be realized quick deployment and gather, while providing adaptive buffer support.

The utility model discloses a corrugated pipe repairing device, including support ring, driving disc, a plurality of support rod, handle, tighten and shape tile that take in, support ring is by two pieces of ring composition, and the inner ring surface has ring groove, driving disc is located in the support ring, and the stable rotation is realized through the cooperation of limiting ear and ring groove, support rod radial arrangement, one end passes through the support ring, and the end part guide column slides in the arc -shaped guide groove of driving disc and realizes the telescopic, shape tile can be dismantled in support rod end, when operating, handle and tighten are in the radial surface of corrugated pipe, and the power is convenient, and the driving disc is driven to rotate and tighten, and support rod radial movement makes shape tile expansion and restores corrugated pipe, and this device is strong, and the operation is convenient and efficient, can effectively restore the deformed corrugated pipe.

The utility model discloses an impact-resistant plastic pipe fitting, and relates to the technical field of plastic pipe fittings, the impact-resistant plastic pipe fitting comprises a pipe body, an inner layer, a middle layer and an outer layer are respectively arranged in the pipe body, a first reinforcing layer is arranged between the inner layer and the middle layer, and a second reinforcing layer is arranged between the middle layer and the outer layer. A second reinforcing layer is installed between the middle layer and the outer layer, the outer wall of the pipe body is sleeved with a supporting ring, the supporting ring is composed of a first supporting plate and a second supporting plate, air bags are installed on the inner wall of the first supporting plate and the inner wall of the second supporting plate, a clamping groove is formed in one end of the upper portion of the second supporting plate, and a clamping groove is formed in the other end of the upper portion of the second supporting plate. Through holes are formed in the two sides of the clamping groove, and a clamping plate is installed at one end of the upper portion of the first supporting plate. According to the scheme, the problems that in the using process of an existing plastic pipe fitting, due to the fact that the strength of the plastic pipe is low, in the using process of the plastic pipe, the impact damage resistance effect is poor, the plastic pipe is prone to being damaged after being impacted, and then the plastic pipe is damaged are solved; and normal use is influenced.

This utility model discloses a portable mechanical equipment maintenance toolbox structure, including a box body. Two sponge pads are fixedly installed on the inner bottom wall of the box body. A cavity is formed in the inner wall of the box body, and a perforated partition is fixedly installed on the inner wall. A box cover is hinged to the back of the box body via two hinges. This device, through the cooperation of a threaded rod and a threaded ring, allows the threaded ring to push a lever to rotate, which in turn pushes a pressure plate downwards. The pressure plate then pushes a limiting ring downwards, which in turn pushes a sliding cylinder and a caster wheel downwards. The caster wheel extends out of the support ring and moves downwards, thus supporting the device. Furthermore, pulling the lever allows the device to move via the caster wheel, facilitating the carrying of heavy tools. This makes the device convenient for carrying heavy tools.

The application discloses a winding type socket joint forming equipment and relates to the winding pipe processing field.The winding type socket joint forming equipment comprises a die body, a working frame is arranged on one side of the outer wall of the die body, a mounting seat is further arranged on one side of the outer wall of the die body, the mounting seat is located above the working frame, a first supporting ring is fixedly connected to one end of the top of the working frame and away from the mounting seat, a second supporting ring is arranged on one side of the first supporting ring, two supporting legs are symmetrically arranged on the outer walls on the two sides of the second supporting ring, two guide rails are symmetrically fixedly connected to the outer wall of the bottom end of the die body, the other ends of the two guide rails are fixedly connected to the side wall of the first supporting ring, the two supporting legs are slidably connected to the outer walls of the two guide rails respectively, and adjustable supporting mechanisms are uniformly arranged on the outer walls around the mounting seat, so that the winding type socket joint is fixed, the winding plastic strip keeps a stable state during the winding process, and the winding effect is improved.

The utility model discloses a filtering device for a ventilating duct, and relates to the technical field of filtering devices. An annular filter groove is formed in the peripheral side of the inner wall of the ventilation pipeline, an arc-shaped notch communicated with the annular filter groove is formed in the side portion of the ventilation pipeline, an annular installation frame is arranged in the annular filter groove in a running fit mode, an arc-shaped plate is arranged on the side portion of the annular installation frame, a supporting annular plate is arranged on the peripheral side of the inner wall of the annular installation frame, and a filter screen is placed on the supporting annular plate. A limiting assembly is arranged on the side portion of the ventilation pipeline. The positions of the connecting base and the outer gear ring are conveniently adjusted through the movable frame, meanwhile, the probability that the outer gear ring is blocked during rotation is reduced, the outer gear ring is conveniently inserted into the first annular clamping groove to be meshed with the inner gear ring through elastic sliding of the connecting base on the movable frame, and therefore the connecting base is rotated to drive the plug pin to slide. And the limiting of the semicircular clamping plate by the plug pin is canceled, so that the convenience of dismounting the filter screen is improved.

The utility model discloses a kind of deodorization equipment for lifting pump station, including cylinder and controller, the outer surface side of the cylinder is fixedly connected with shell, and controller is fixedly installed in the inboard of shell, top plate is fixedly connected between the shell and cylinder, the top of the top plate and cylinder is sealed with mounting plate, rotating assembly is jointly installed between the mounting plate and shell. In the utility model, the upper shell and the lower shell structure of split type screw connection are used, the clamping design of cooperation support ring and pressure ring makes that activated carbon plate forms the sealed assembly of quick disassembly, the difficult problem of replacement caused by traditional fixed installation is solved;By pump suction type gas detection sensor, the odor concentration of gas after real-time monitoring processing is monitored, when detecting abnormal, rotating assembly drives mounting plate to rotate, cylinder exhaust hole is closed, avoid untreated malodorous gas direct emission.

The utility model belongs to the technical field of cable production, and particularly relates to a high-speed cabling machine for high-flame-retardant cable production, which comprises a bottom plate, a support ring is fixedly mounted at the top of the bottom plate, a support plate is fixedly mounted on one side of the top of the bottom plate, and a pay-off assembly is arranged on the inner wall of the support plate. A supporting assembly is arranged on the inner wall of the supporting ring, a wire winding mechanism is arranged on the inner wall of the supporting ring, a limiting assembly is arranged on the inner wall of the supporting ring, and through arrangement of a rotating roller and a wire winding roller, the rotating roller and the wire winding roller are used in cooperation and can be driven by a driving roller to synchronously rotate with a gear; therefore, the copper wire can be continuously supplied, and the copper wire can be wound into a cable at a high speed.

The utility model relates to motor casing technical field, concretely is the shell mechanism of wiper motor, including wiper motor assembly, wiper motor assembly includes motor casing, be provided with heat dissipation subassembly on the motor casing, heat dissipation subassembly includes the fin, heat conduction ring and be used for connecting the heat conduction block of fin and heat conduction ring, heat conduction block penetrates motor casing, heat conduction block and the sealing rubber cover that sets up on the contact position of motor casing, through the polygonal groove design of elastic connecting ring has increased the deformation variable significantly, cooperates the dynamic misregistration of support ring and contact ring, makes vibration energy in transmission process can be dispersed efficiently, cooperates the connecting piece of elastic heat conduction material and the flow guide piece, forms multistage buffer energy absorption, has simplified internal structure, has reduced the overall weight, improved the shock attenuation efficiency simultaneously, reduced the component damage risk that wiper motor and the body resonance led to, improved the stability of device.

The utility model discloses a square pile film covering device, including the bottom plate, the bottom plate top installs the electric transmission belt, the top of bottom plate still is provided with the film -coated cylinder, the edge surface of film -coated cylinder is installed the taper tooth block, the outside of film -coated cylinder is provided with the servo motor, the output of servo motor is fixed with the bevel gear machine, the surface of film -coated cylinder is provided with the support ring, the support ring is fixed on the surface of bottom plate through the stand. This square pile film covering device, the motion of stake body between two electric transmission belts, when stake body passes through the film -coated cylinder, servo motor passes taper gear and taper tooth block and pushes the film -coated cylinder and rotates in the support ring, and the rotating film -coated cylinder drives the winding wheel and moves around the outside of stake body, at the same time, the plastic film in winding wheel is wrapped and covered on the surface of stake body and protects it, improves the film -coating efficiency, and also improves the uniformity of plastic film on the surface of stake body.

The invention discloses an image measurement nozzle spraying performance test device, which comprises a test bed, a nozzle, a test solution circulation system, a liquid pump test system and a liquid collection system, and is characterized in that the liquid collection system comprises a plurality of measuring cylinders arranged in a rectangular array, the lower ends of the measuring cylinders are connected with supporting rings, and the lower parts of the supporting rings are fixedly connected with weighing sensors; a water baffle capable of moving up and down is arranged in the measuring cylinder, and a water diversion seat is arranged at the lower end of the water baffle; a plurality of water retaining pieces are connected to the water diversion base, and the upper ends of the water retaining pieces penetrate through the side wall of the water baffle and extend to the upper portion; the output end of the water diversion base is fixedly connected with a conveying pipe. In the using process of the device, a water source in the measuring cylinder can be rapidly discharged, meanwhile, the situation that the water source cannot be completely discharged is avoided, the measuring efficiency is further improved, the using requirements of users are met, and the practicability of the device is indirectly improved.

The utility model belongs to the technical field of oil tank sealing, and disclose a rubber sealing element for oil tank, including sealing assembly, sealing assembly fixed mounting is in the oil tank mouth outer surface, sealing assembly movable sleeve is equipped in the outside of oil tank cover connecting shaft, the outside fixed connection of sealing assembly has cleaning assembly, the side fixed connection of sealing assembly has the support ring of being located in the bottom of cleaning assembly, sealing assembly is by the compression ring, first connecting ring and sealing ring, the compression ring, sealing ring, first connecting ring and support ring are connected in head and tail, form the closed space. The utility model is because the setting of sealing ring, under the cooperation of compression ring, first connecting ring and support ring, can form sealed cavity, and because the hardness of support ring is greater than sealing ring makes the compression sealing ring to expand inwards and the shaft between oil tank cover and lower end thread connection is closely attached, avoids the situation that oil body is exuded from the thread connection gap during the shaking of rapid operation.

The utility model provides a gear ring mounting structure and a gear box. The gear ring mounting structure comprises a gear ring mounting piece. The supporting ring and the gear ring mounting piece are mounted in a circumferential anti-torsion manner; the gear ring is installed on the gear ring installation piece in a circumferential direction and anti-torque mode through a supporting ring, a concave-convex structure is formed on the circumferential wall of the supporting ring in the circumferential direction of the supporting ring, and an inner circumferential concave portion located on the inner circumferential wall and an outer circumferential convex portion located on the outer circumferential wall are formed on the portion, integrally deformed towards the radial outer side, of the circumferential wall of the supporting ring. An inner peripheral convex part located on the inner peripheral wall and an outer peripheral concave part located on the outer peripheral wall are formed on the portion, integrally deformed towards the radial inner side, of the peripheral wall of the supporting ring, a spline is arranged on the periphery of the gear ring, and the spline is matched with the inner peripheral concave part, so that the gear ring and the supporting ring are installed in a circumferential anti-torque mode. And an accommodating space is formed between the peripheral concave part and the gear ring mounting piece.

The utility model belongs to the technical field of power cables, and particularly relates to an IE-grade K3-class radiation-resistant power cable, which comprises a protective sleeve, ventilation and heat dissipation ports arranged at equal intervals are arranged on the outer surface of the protective sleeve, a connecting sleeve is arranged in the protective sleeve, a power cable is arranged on the inner wall of the connecting sleeve, and two groups of support rings are fixedly connected to the outer surface of the connecting sleeve. The side faces, close to each other, of each set of supporting rings are fixedly connected with supporting plates arranged at equal intervals, the side face, away from the connecting sleeve, of each supporting plate is fixedly connected with two sets of telescopic springs, and the ends, away from each other, of each set of telescopic springs are fixedly connected with connecting plates. Particularly, an elastic buffering system composed of a supporting ring, a supporting plate, a telescopic spring and a connecting plate can convert mechanical impact into spring deformation energy, the external force resisting performance is greatly improved, and meanwhile an efficient heat dissipation path can be formed by matching equidistant ventilation heat dissipation openings in the surface of the protective sleeve with an air channel between the protective sleeve and a connecting sleeve.