33results about How to "Avoid twisting damage" patented technology

The invention provides a lever handle mechanism with a fingerprint recognition function. The lever handle mechanism comprises a shell plate and a lever handle body. The lever handle body comprises a holding segment and an inserted connection segment with a cavity formed inside. The first end of the inserted connection segment is connected with the holding segment, the second end of the inserted connection segment stretches into the shell plate and is connected with square steel through a steering assembly, and the first end of the inserted connection segment is provided with fingerprint collection module. A pressure spring connected with the square steel and a wire used for transmitting fingerprint information are arranged in the cavity, the pressure spring is arranged in the middle, and the wire is eccentrically arranged. Based on the above structure, on one hand, the square steel can be matched with most door thicknesses by means of the telescopic characteristic of the pressure spring, and universality of the lever handle mechanism is improved; and on the other hand, the pressure spring and the wire are arranged in the cavity of the inserted connection segment, the pressure spring is arranged in the middle, the wire is eccentrically arranged, by means of the design, the space of the cavity is fully utilized, meanwhile, the problem that the wire freely rotates along with the lever handle body, and consequently the wire is twisted and damaged is avoided, and the service life of the lever handle mechanism is prolonged.

The invention discloses a zero-torque anchor rod pre-tightening machine tool amongin machine tools for increasing the pre-tightening force of anchor rods. The zero-torque anchor rod pre-tightening machine tool A product mainly comprises a hydraulic jack, a bearing sleeve, a connecting rod, a transition nut, a tail nut and a fastening nut structure. The zero-torque anchor rod pre-tightening machine tool disclosed by the invention is connected with an anchor rod by characterized in that the parts are utilized for forming the zero-torque machine tool for increasing the pre-tightening force of an anchor rod, the connecting rod and the transition nut are utilized for connecting the zero-torque anchor rod pre-tightening machine tool and the anchor rod; the hydraulic jack pushes the bearing sleeve to act on an anchor rod pallet,; simultaneously, the connecting rod is pulled to pre-tighten the anchor rod,; and finally, the fastening nut structure is used for fastening the anchor rod with high pre-tightening force. According to the zero-torque anchor rod pre-tightening machine tool disclosed by the invention, the problems that as an existing anchor rod only due to utilizes aation of the thread structure on the existing anchor rod, the increase of the pre-tightening force is low, the combined stress of the end part of the anchor rod is concentrated, the anchor rod is easily twisted in the fastening process, and the stressing of a roadway support is not uniform and the like are solved. The zero-torque anchor rod pre-tightening machine tool disclosed by the invention has the advantages of ultrahighthat the pre-tightening force is ultrahigh, zero torque is achieved, the alleviation of concentration of the combined stress at the root part of the thread is reduced and simplicity in the operation is simple, and is applicable to high pre-tightening force operation of the anchor rod or the fastening operation of the thread structure.

The invention provides a refrigerator with a sliding rail wire routing mechanism. The refrigerator comprises a chamber opened forwards and a drawer type door body. The chamber is provided with a bottom wall, a rear wall and two side walls. The drawer type door body is provided with an electrical component, and a supporting frame movably arranged on the side walls in the front-back direction is further arranged on the rear side of the drawer type door body and used for bearing a drawer box. The sliding rail wire routing mechanism comprises a cable for supplying power to the electrical component, a first wire routing box fixed to the inner side of the chamber, and a second wire routing box fixed to the supporting frame. A first containing part and a second containing part which are located below the drawer box are formed by the first wire routing box, the cable is provided with a fixed section fixed in the first containing part and a movable section extending towards the second wire routing box from the fixed section, and the second containing part is used for containing part of the movable section. By means of the sliding rail wire routing mechanism, cable damage can be better avoided, and work is safer and more reliable.

The invention discloses a braking energy recovery auxiliary lighting device used for an automobile. The braking energy recovery auxiliary lighting device comprises an axle. The axle is in key connection with a driving bevel gear. The driving bevel gear is engaged with a driven bevel gear. The driven bevel gear is connected with a first transmission shaft. The first transmission shaft is matched with a second transmission shaft through an electromagnetic clutch. The second transmission shaft is matched with a third transmission shaft through a belt. The third transmission shaft is matched witha gearbox input shaft. A gearbox output shaft is connected with a rotor shaft of an electric generator through a coupler. The electric generator is electrically connected with a storage battery. The storage battery is connected with multiple lamp beads in parallel. The lamp beads penetrate into a transparent soft shell strip. The braking energy recovery auxiliary lighting device used for the automobile can recover braking energy, is environment-friendly and saves energy, the problem that the gearbox and the electric generator are damaged due to the too large instantaneous torque in the energyrecovery process can be solved, the recovered energy can be used for automobile body contour illumination and decoration, and traveling safety at night is improved.

The invention discloses a wind-water linkage embedded fire-fighting spraying smoke exhaust system. The wind-water linkage embedded fire-fighting spraying smoke exhaust system comprises a smoke exhaustpipe and a fire-fighting water pipe which are buried in a wall body, wherein the fire-fighting water pipe is located in the smoke exhaust pipe and is mounted in the middle; a spraying smoke exhaust device is mounted on the smoke exhaust pipe and the fire-fighting water pipe in a common thread sealing manner; a water inlet channel and a water drainage channel are arranged at the upper and lower ends of the spraying smoke exhaust device in an inward concave manner respectively; a rotary sleeve is mounted between the water inlet channel and the water drainage channel in a common sealing and rotary manner; and a sealing ring is mounted in the water drainage channel. According to the wind-water linkage embedded fire-fighting spraying smoke exhaust system, the fire-fighting water pipe and the smoke exhaust pipe are mounted in a mother-child manner so that the spraying smoke exhaust device can be used for spraying and extinguishing fire and exhausting smoke and defogging at the same time; the water inlet channel and the water drainage channel are connected through the rotary sleeve so that smoke exhaust blades can rapidly rotate to exhaust the smoke and defog; a rubber plug is automatically opened and closed according to the temperature through a temperature sensing bag and a hydraulic supporting column, so that the functions of spraying a fire disaster and stopping when the fire isextinguished are realized.

The invention relates to the field of high-end equipment manufacturing industry, in particular to a precise and efficient hot die forging press. The precise and efficient hot die forging press comprises a rack, wherein a forging extrusion force heavy load regulation and control device, a pressure pin unloading device, a crankshaft bearing bush temperature control device, a sliding block guide rail temperature control device, a ball head temperature control device and a clutch temperature control device which are connected with a control system are arranged on the rack respectively. The forging extrusion force heavy load regulation and control device can automatically and accurately regulate and control the magnitude of forging extrusion force under the heavy load condition, and the pressure pin unloading device can float a pressure pin upwards, so that the rotating torque and resistance in the transmission link are reduced; the crankshaft bearing bush temperature control device is adopted for accurately controlling the temperature of a bearing bush, and meanwhile efficient sealing thin oil lubrication is conducted; the clutch temperature control device is adopted to realize accurate and efficient temperature control of a clutch; and the sliding block guide rail temperature control device and the ball head temperature control device are adopted for conducting cold air temperature control on a friction pair, so that the transmission precision, efficiency and reliability of equipment and the product quality are effectively improved, and intelligent operation and maintenance and automatic control wiring are achieved.

The invention provides a tail sealing accessory and a connector employing the same. The connector comprises a connector shell and the tail sealing accessory, wherein the tail sealing accessory is connected to the rear end of the connector shell and comprises a tail sleeve and a sealing element, the tail sleeve is connected onto the connector shell by a spiral connection structure arranged at the front end, and a rotation stop structure is arranged at the front end of the sealing element and is used for matching with the connector shell during circumferential rotation stop. When the tail sleeve is connected to the connector shell by the spiral connection structure, the rotation stop structure at the front end of the sealing element and the connector shell circumferentially stop rotating, thus, the sealing element and the connector shell are enabled to be circumferentially fixed and cannot rotate with the rotation of the tail sleeve, and a cable tightly wrapped by the sealing element is prevented from being twisted and damaged.

The invention relates to the technical field of passive electronic locks and in particular relates to a passive electronic lock applying difference frequency modulation communication. The passive electronic lock comprises an active electronic key end and a passive electronic lock cylinder end, wherein the active electronic key end and the passive electronic lock cylinder end are subjected to datainteraction through quasi-sine data waves with difference frequency. The passive electronic lock provided by the invention has the beneficial effects that only two power supplies and data lines are needed so that only two electrode contactors are needed; a contactor design is simplified and a contactor size is reduced, so that a product is convenient to design and produce; meanwhile, the strengthof an electrode is increased and a contactor is enlarged; the reliability of the contactor is also improved and the whole contactor has no directivity; the contactor can rotate freely, so that the possibility of damaging the contactors by twisting by mistakes is avoided and the polarity of an electrode is not reversed; the round electrode has no directivity so that the round electrode is very convenient to align and insert by a user and the use experience of the user is relatively good.

The invention discloses a novel treadmill motor which comprises a treadmill roller and a first outer rotor motor. The first outer rotor motor comprises a first shaft, a first stator, a first outer rotor, a first driving plate, a first bearing, a first permanent magnet and a first sealing block. The first stator and the first bearing sleeve the first shaft. The first driving plate is fixedly installed on the first shaft. The first outer rotor sleeves the first bearing. The first permanent magnet is installed in the first outer rotor and is opposite to the first stator. The first driving plate is electrically connected with the first stator. One end of the treadmill roller sleeves the first outer rotor. The first sealing block sleeves the first shaft and is connected with the first driving plate. In the novel treadmill motor, the treadmill roller and the first outer rotor motor are integrated, a large installation space is saved, the energy consumed in transmission process is reduced, the assembly errors in the multi-structure installation are eliminated, and the work reliability of a treadmill is improved.

The invention discloses a fuse mounting device. The fuse mounting device includes a base, a fuse and a ceramic insulator, wherein two end surfaces of the ceramic insulator are respectively provided with clamps, the base is provided with multiple sets of clamp mounting hole holes close to the two end surfaces, fastening bolts are arranged between the clamps and the mounting holes, two ends of the ceramic insulator are respectively provided with a connection screw, surfaces of the two connection screws are sleeved with conductive connection boards, one sides of the conductive connection boards are provided with wiring columns, one top ends of the conductive connection boards are fixedly connected with fixing screws, and a fuse fixing device is arranged between the two fixing screws. The fusemounting device is advantaged in that through setting the fuse fixing device, utilizing a pressing type fixed fuse mode is facilitated, twisting damage to a conductive spring chip caused by rotary fixing of the fuse is prevented, through a sliding groove effect of a fixing end sheet, the fuse is effectively reasonably mounted according to length of the ceramic insulator.

The invention discloses an air compressor. The air compressor comprises a handle, a belt wheel fixedly arranged on a motor rotary shaft, a flywheel and a belt, wherein the belt wheel drives the flywheel to rotate through the belt; the belt wheel is provided with a first surface which is positioned at the periphery of the belt wheel and surrounds the central axis of the belt wheel; the flywheel is provided with a second surface which is positioned at the periphery of the flywheel and surrounds the central axis of the flywheel; the inner surface of the belt clings to the first surface and the second surface, and is provided with a plurality of rings of rib stations which are arranged side by side; the first surface is a slotted surface; the second surface is a smooth surface; the first surface is equipped with a plurality of ring-shaped grooves which separately surround the central axis of the belt wheel and are formed side by side; and the rib stations are embedded into the grooves in the slotted surface of the belt wheel and resist against the smooth surface of the flywheel. With the adoption of the design, a belt is not liable to drop, and the position of the belt can automatically adapt to fine tuning to prevent deviation, so that the belt is prevented from being twisted and worn, and therefore, the service life of the belt is prolonged.

The invention discloses a strain gauge for limiting a torsion angle. The strain gauge comprises a base, a vibration wire and a sensor, wherein the sensor is arranged in the middle of the vibration wire; the base comprises two support seat main bodies, grooves are formed in one surfaces, facing towards each other, of the support seat main bodies; connecting sections are movably connected to two ends of the vibration wire and are inserted into the grooves; at least two limiting blocks are arranged on one surfaces, in which the grooves are formed, of the support seat main bodies, and bayonets areformed between every two limiting blocks; and clamping blocks corresponding to the bayonets are arranged on the side surfaces of the end parts of the vibration wire. According to the strain gauge, the problem that a vibration wire of a traditional strain gauge is easily twisted off when being mounted to a base for use is solved.

The invention discloses an automatic LED lamp assembly device, the structure of which includes an organism, a controller, a rotating platform, a disc, a pre-pressing mechanism, an LED lamp body placement cylinder, a glue dispensing mechanism, a manipulator, and a lampshade placement frame 1. Unloading the lamp board, the controller is fixed on the body, the side of the controller is provided with the lamp board connected with the body, and after the lamp board is removed, there is a manipulator connected with the body and a lampshade placement frame. Compared with the prior art, this The effective effect of the invention lies in that the present invention places the LED lamp body by using the LED lamp body placement cylinder composed of cylinder body, support ring, LED lamp body support mechanism, transmission gear, adjustment mechanism and other components, which can be adapted to different specifications and models. For the placement of the LED lamp body, when it is necessary to assemble LED lamps of different specifications and models, there is no need to replace the placement tube, and it is only necessary to adjust the position of the LED lamp body support mechanism to adapt. The adjustment is simple and the adjustment efficiency is high.

The invention provides a refrigerator with a sliding rail routing mechanism, which includes a compartment and a drawer-type door body that are opened to the front. The compartment has a bottom wall, a rear wall and two side walls. The drawer-type door body has Electrical components are provided, and the rear side of the drawer-type door body is also provided with a support frame movably installed on the side wall along the front and rear directions, and the support frame is used to carry the drawer box. The slide rail wiring mechanism includes cables for powering the electrical components, a first wiring box fixed inside the compartment, and a second wiring box fixed on the support frame; the first wiring box The wire box is formed with a first receiving portion and a second receiving portion located below the drawer box, the cable has a fixed section fixed in the first receiving section and runs from the fixed section toward the second A movable segment extending from the box, and the second receiving part is used for accommodating part of the movable segment. The cable routing mechanism of the slide rail can better avoid cable damage, and the work is safer and more reliable.

The invention relates to high-end equipment manufacturing industry, in particular to a pressure pin unloading device and method for die adjustment of a hot die forging press. A clamping rod is locked and loosened through a locking air cylinder and a disc spring, and the state of the clamping rod is detected through a sensor; the pressure pin is lifted upwards in a balanced and stable mode by injecting a high-pressure gas into the friction face of a sliding block, the purpose of a relieving part of gravity and rotating torque of the pressure pin is achieved, and the purpose of unloading is achieved. The PLC is fully utilized to realize rotation of the pressure pin and locking and loosening detection and PLC control interlocking, so that the problems that a copper sleeve is quickly worn, and a bevel gear pair, a worm pair and a coupler spline are twisted off and damaged due to the fact that the rotation torque of the pressure pin is too large when the die-filling height of the sliding block is adjusted through hot die forging are solved; and the problem that driving accidents in a pressure pin locking state are possibly caused by the fact that a pressure pin clamping lock of the hot die forging press and an automatic production line of the hot die forging press is tight, loose and free of detection control is solved, and the transmission precision, reliability and production efficiency of the hot die forging press and the automatic production line of the hot die forging press are effectively improved.

The invention relates to the high-end equipment manufacturing industry, in particular to a pressure pin unloading device and method for mold adjustment of a hot die forging press. A locking cylinder and a disc spring are used to lock and release the clamping rod, and a sensor is used to detect the clamping rod. Inject high-pressure gas on the friction surface of the slider to achieve balance and stability and lift the pressure pin upward to reduce the gravity and rotational moment of the pressure pin to achieve the purpose of unloading. Make full use of the PLC controller to realize the rotation of the pressure pin and the locking and loosening Detect the PLC control interlock, solve the problem that the pressure pin rotation torque is too large when the hot die forging adjusts the height of the slider, which causes the rapid wear of the copper sleeve and the damage of the bevel gear pair, worm pair, and coupling splines. The hot-touch forging press and its automatic production line can effectively improve the transmission accuracy, reliability and reliability of the hot-touch forging press and its automatic production line. Productivity.

The invention discloses an anti-seismic fire-fighting bracket for a building. The bracket comprises a fire-fighting supporting plate, wherein a pair of fire-fighting vertical plates is fixedly arranged on two sides of the fire-fighting supporting plate, fire-fighting induction nozzles are separately arranged at the bottom of the fire-fighting supporting plate and on the inner sides of the fire-fighting vertical plates, a pair of shock absorbing oscillating bars is separately arranged on two longitudinal shaft levers, separately, the shock absorbing oscillating bars are arranged in V shape, transverse shaft sleeves are fixedly mounted at the ends, far away from a shaft seat, of the shock absorbing oscillating bars, and adjacent two fire-fighting supporting plates communicate through a watersupply steel pipe. The bracket can protect an electromechanical engineering facility effectively and prevent the electromechanical engineering facility from falling off integrally under a strong shock. The adjacent fire-fighting supporting plates are connected and fixed through the water supply steel pipe, the hoisted electromechanical engineering facility is prevented from being twisted and damaged, and meanwhile, a fire-fighting water supply facility and the anti-seismic bracket are arranged in a combined manner, so that the integral efficiency of parts of the building is improved. In addition, the anti-seismic fire-fighting bracket can respond to a fire behavior quickly, so that the anti-seismic fire-fighting bracket is suitable for being widely popularized and applied.

The invention discloses a ball push rod and an electric bed using the ball push rod; a first tail end of a push rod main body is connected with a drive device, a second tail end is provided with an embedding structure, and a ball capable of rolling universally is embedded in the embedding structure. The ball push rod is in abut joint with the back surface of a bed board of the electric bed throughthe ball, so that when the ball push rod pushes the bed board to displace correspondingly, any movement of the bed board in the vertical plane relative to the ball push rod does not cause lateral shearing and twisting to the push rod, and the shearing force generated when the bed board is tilted relatively to the ball push rod can be greatly reduced, and the distortion and damage of the ball pushrod can be avoided.

The invention discloses a device for holding a head section by oil pressure of a fully-automatic pipe bender, which has low manufacturing cost. The device comprises a jacking oil cylinder which is fixed on a machine body, wherein a piston rod of the jacking oil cylinder is connected with the lower end of the head section; the lower end of the jacking oil cylinder is connected with a first connecting tube; one end of the first connecting tube is connected with one end of an oil tank by a second connecting tube; an overflow valve is arranged on the second connecting tube; the other end of the first connecting tube is connected with an oil pump by a third connecting tube; a pressure gauge, a check valve, a decompression valve and an electromagnetic valve are arranged on the third connecting tube in order; and the oil pump is connected with the other end of the oil tank by a fourth connecting tube. The fully-automatic pipe bender provided with the device for holding the head section by oil pressure has the advantages of quickly realizing up-and-down motion of the head section, enabling the positioning of the head section to be more precise, ensuring that a ball screw does not bear great pressure, preventing the ball screw from being distorted and damaged, and prolonging the service life of the ball screw, along with low manufacturing cost.

The invention discloses a three-way sealing ball valve. The three-way sealing ball valve comprises a shell, a cover body and a ball valve element; the shell and the cover body are connected through a flange; a cavity is formed by the shell and the cover body; the ball valve element is installed in the cavity; a valve rod is installed on the ball valve element; a balance arm is installed on the shell; a plurality of communicating pipes are arranged on the shell; the axes of the communicating pipes are located on the same plane; and the axes of the communicating pipes are perpendicular to each other. The three-way sealing ball valve has the beneficial effects that when the valve rod is rotated, the balance arm is held by the other hand, so that the influence on the shell when the ball valve element is rotated is reduced, and twisting damage to a pipeline communicated with the three-way ball valve is avoided.

The invention discloses a wind-water linkage embedded fire-fighting sprinkler smoke exhaust system, which comprises a smoke exhaust pipe and a fire-fighting water pipe buried in a wall. The common thread seal is equipped with a spray smoke exhauster, and the upper and lower ends of the spray smoke exhauster are respectively concavely provided with a water inlet channel and a drainage channel, and the common sealing rotation between the net water inlet channel and the drain channel is installed with a rotary sleeve, and a sealing ring is installed in the drainage channel. In the present invention, through the installation of fire-fighting water pipes and smoke exhaust pipes, the spray smoke exhauster can spray fire and smoke exhaust and demist at the same time, and connect the water inlet channel and drainage channel through the rotating sleeve to make the smoke exhaust blades rotate quickly to exhaust smoke and demist. The temperature sensing package and hydraulic prop automatically open and close the rubber plug to realize the function of fire spraying and stopping when the fire is extinguished.

The invention discloses a gyration angle monitoring device, method and system as well as engineering mechanical equipment. The gyration angle monitoring device comprises a reception device used for receiving a signal for controlling gyration of an object and a signal representing the gyration angle of the object and a control device used for judging if the gyration angle is within a preset range,wherein if the gyration angle is outside the preset range and the signal for controlling the gyration of the object may cause the object to be more deviated from the preset range, the control device shields the signal for controlling the gyration of the object. The gyration angle monitoring device can effectively avoid cables from being twisted, and in particular, aims at situation that the towercrane is electrified again for operation after losing power.

The invention discloses a fuse installation device, which comprises a base, a fuse and a ceramic insulator. Both ends of the ceramic insulator are provided with clips, and the base is provided with several sets of clips for installation near the surfaces of both ends. holes, fastening bolts are provided between the clamp and the mounting hole, connecting screws are provided at both ends of the ceramic insulator, and conductive connecting plates are sleeved on the surfaces of the two connecting screws, and the conductive connecting plates are A terminal is provided on the side, a fixing screw is fixedly connected to one end of the top of the conductive connecting plate, and a fuse fixing device is arranged between the two fixing screws. The invention is equipped with a fuse fixing device, which is beneficial to adopt a press-type fixed fuse method to prevent the fuse from being rotated and fixed, causing the conductive spring chip to be twisted and damaged, and through the action of the chute of the fixed end piece, the fuse can be effectively made Properly install according to the length of the ceramic insulator.

The invention provides a lever handle mechanism with a fingerprint recognition function. The lever handle mechanism comprises a shell plate and a lever handle body. The lever handle body comprises a holding segment and an inserted connection segment with a cavity formed inside. The first end of the inserted connection segment is connected with the holding segment, the second end of the inserted connection segment stretches into the shell plate and is connected with square steel through a steering assembly, and the first end of the inserted connection segment is provided with fingerprint collection module. A pressure spring connected with the square steel and a wire used for transmitting fingerprint information are arranged in the cavity, the pressure spring is arranged in the middle, and the wire is eccentrically arranged. Based on the above structure, on one hand, the square steel can be matched with most door thicknesses by means of the telescopic characteristic of the pressure spring, and universality of the lever handle mechanism is improved; and on the other hand, the pressure spring and the wire are arranged in the cavity of the inserted connection segment, the pressure spring is arranged in the middle, the wire is eccentrically arranged, by means of the design, the space of the cavity is fully utilized, meanwhile, the problem that the wire freely rotates along with the lever handle body, and consequently the wire is twisted and damaged is avoided, and the service life of the lever handle mechanism is prolonged.

The invention discloses a combined ramp-roof core pulling stripping device for an injection mold deep coating dense undercut. The combined ramp-roof core pulling stripping device comprises a ramp-roofcore pulling block (1), a follow-up stopping ejection block (2) and a distortion stopping ejection rod (3). The ramp-roof core pulling block adopted by the combined ramp-roof core-pulling stripping device is a block-shaped steel component provided with a profile of the deep coating dense undercut, and the ramp-roof core-pulling block is provided with a ramp-roof rod; the follow-up stopping ejection block is a blocky steel component provided with a profile corresponding to an injection product, and the follow-up stopping ejection block is provided with a follow-up stopping ejection rod; the distortion stopping ejection rod is a cylindrical rod-shaped steel component; and during working, the technical scheme that the follow-up stopping ejection block stops the deep coating dense undercut from undercut following, and the follow-up stopping ejection rod and the distortion stopping ejection rod are combined to powerfully stabilize the follow-up stopping ejection block to eliminate distortion damage of the injection product is carried out, and the deep coating dense undercut is stripped through double-rod combined ramp-roof core pulling, so that injection molding production of the injection product with the deep coating dense undercut achieves the purposes of reducing the working intensity, improving the efficiency, reducing the cost and adapting to automatic production.

The invention relates to the technical field of cable protection sleeves, and discloses a convenient-to-penetrate anti-damage cable protection sleeve, which comprises a cable body, wherein an inner sliding layer is arranged on the outer surface of the cable body, a plurality of balls capable of rolling freely are annularly arranged on the inner wall of the inner sliding layer at intervals, more than half of the balls are embedded into the inner sliding layer, an insulating layer is arranged on the outer surface of the inner sliding layer, a shielding layer is arranged on the outer surface of the insulating layer, a high-temperature-resistant layer is arranged on the outer surface of the shielding layer, a corrosion-resistant layer is arranged on the outer surface of the high-temperature-resistant layer, and a hard layer is arranged on the outer surface of the corrosion-resistant layer. According to the invention, the inner sliding layer is arranged, a plurality of circular holes are formed in the inner wall of the inner sliding layer at intervals in the circumferential direction, and a plurality of balls capable of rolling freely are arranged in the circular holes, so that the resistance of a cable penetrating into the cable protection sleeve is greatly reduced, the cable can be smoothly arranged in the cable protection sleeve body in a penetrating manner, and the cable is prevented from being twisted and damaged in the penetrating process so as to avoid potential safety hazard.

The invention provides a tail sealing accessory and a connector employing the same. The connector comprises a connector shell and the tail sealing accessory, wherein the tail sealing accessory is connected to the rear end of the connector shell and comprises a tail sleeve and a sealing element, the tail sleeve is connected onto the connector shell by a spiral connection structure arranged at the front end, and a rotation stop structure is arranged at the front end of the sealing element and is used for matching with the connector shell during circumferential rotation stop. When the tail sleeve is connected to the connector shell by the spiral connection structure, the rotation stop structure at the front end of the sealing element and the connector shell circumferentially stop rotating, thus, the sealing element and the connector shell are enabled to be circumferentially fixed and cannot rotate with the rotation of the tail sleeve, and a cable tightly wrapped by the sealing element is prevented from being twisted and damaged.

The invention discloses an oil-immersed electronic automatic voltage regulating transformer with an automatic height adjusting function. The oil-immersed electronic automatic voltage regulating transformer comprises a supporting mechanism and a voltage transformation mechanism, the supporting mechanism comprises a supporting frame, a top plate is installed at the top of the supporting frame, a lifting assembly is installed at the bottom of one side of the supporting frame, connecting assemblies are arranged on the front side and the rear side of the supporting frame, the voltage transformation mechanism is arranged in the supporting mechanism, a heat dissipation assembly is installed in the top plate, and the supporting mechanism is used for supporting the lifting assembly and the voltage transformation mechanism. And the voltage transformation mechanism is hoisted at the bottom end of the steel wire hoisting rope and is used for regulating the voltage of the high-voltage line. According to the transformer case lifting device, the lifting motor is arranged to drive the double-steel-wire lifting rope to lift the transformer case, and the transformer case is limited in the supporting frame, so that the transformer case can stably ascend and descend, large vibration is effectively prevented when the transformer case is moved, internal parts are prevented from being damaged, and great convenience is provided for maintenance of workers.