142 results about "Pin insulator" patented technology

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized in that: adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by gold tool and form an insulation tower head entity, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention, the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy to improve self-cleaning ability and the occurrence of pollution flashover can be basically and completely precluded, which is beneficial in charged operation, simple in operation process and improves the operation security.

This invention is concerned with the technique project that the bottom surface of single-layer umbrella cap and pin insulator of the glass or the porcelain with umbrella arris splices the composed umbrella shed made of the silicon rubber polymers and gets double-layer umbrella-hanging insulator. The structure is: the middle hole of the compound umbrella shed extends upwards by drum shape, the top part of the drum shape and the umbrella cap bottom surface of the hanging insulator splices with each other. The invention can improve the anti fouling of the insulator without reducing its performance in un / installation.

Shields for feedthrough pin insulators of a hot cathode ionization gauge are provided to increase the operational lifetime of the ionization gauge in harmful process environments. Various shield materials, designs, and configurations may be employed depending on the gauge design and other factors. In one embodiment, the shields may include apertures through which to insert feedthrough pins and spacers to provide an optimal distance between the shields and the feedthrough pin insulators before the shields are attached to the gauge. The shields may further include tabs used to attach the shields to components of the gauge, such as the gauge's feedthrough pins. Through use of example embodiments of the insulator shields, the life of the ionization gauge is extended by preventing gaseous products from a process in a vacuum chamber or material sputtered from the ionization gauge from depositing on the feedthrough pin insulators and causing electrical leakage from the gauge's electrodes.

Shields for feedthrough pin insulators of a hot cathode ionization gauge are provided to increase the operational lifetime of the ionization gauge in harmful process environments. Various shield materials, designs, and configurations may be employed depending on the gauge design and other factors. In one embodiment, the shields may include apertures through which to insert feedthrough pins and spacers to provide an optimal distance between the shields and the feedthrough pin insulators before the shields are attached to the gauge. The shields may further include tabs used to attach the shields to components of the gauge, such as the gauge's feedthrough pins. Through use of example embodiments of the insulator shields, the life of the ionization gauge is extended by preventing gaseous products from a process in a vacuum chamber or material sputtered from the ionization gauge from depositing on the feedthrough pin insulators and causing electrical leakage from the gauge's electrodes.

The invention relates to an electric vehicle battery pack anode and cathode single core large current self-locking connector, which is suitable for the transmission of electric vehicle battery pack anode and cathode large current and the electric connection of other high voltage components of an electric vehicle to electronic communication devices and industrial equipment. The electric vehicle battery pack anode and cathode single core large current self-locking connector comprises a square plate type socket and a plug. The square plate type socket comprises a square plate type socket housing, an insertion hole insulator, an insertion hole insulator covering plate, a copper bar type insertion hole assembly, a square pad and a dust prevention cover. The plug includes a connecting cap, a cap blocking ring, a marble, a marble blocking ring, a rubber ring, a plug shell, a crimp type pin insulator, a crimp type pin insulator covering plate, a crimp type pin, a housing blocking ring, a plug housing O-ring, an anti-back clamping buckle and a waterproof tail assembly.

The invention discloses an inner bayonet type circular connector which comprises a socket, a plug and tail accessories. The socket and the tail accessories are respectively connected with the plug. The inner bayonet type circular connector is characterized in that the socket comprises a square plate protruding body, contact pin insulators and a contact pin, wherein the contact pin insulators and the contact pin are arranged in the square plate protruding body. A contact pin cover plate is arranged on the front portion of the contact pin, and a waterproof pad is arranged between the contact pin insulators and the contact pin cover plate. The square plate protruding body, the contact pin insulators, the contact pin and the contact pin cover plate are assembled into a whole through assembled potting glue. The plug comprises a shell body, a connecting cap, a jack field insulator and a jack field, wherein the contact pin is connected at the front end of the jack field, a jack field cover plate is arranged at the rear end of the jack field, and the shell body is connected with the square plate protruding body through the connecting cap. The tail accessories comprise a transition cover, a locking cap, a wire protecting spring and a waterproof casing pipe. The inner bayonet type circular connector has good tightness and crushing resistance properties, and can be suitable for poor working conditions such as coal mines and water flood situations.

The invention discloses an insulator, which comprises two insulator non-groove regions and an insulator groove region, wherein the insulator groove region is located between the two insulator non-groove regions; a plurality of grooves are formed in the insulator groove region; an intercalation electrode is arranged in each groove; cathodes and anodes are arranged in the two insulator non-groove regions respectively; and the grooves, the cathodes and the anodes are located at the same side of the insulator. According to the insulator, adjustment of secondary electron emission and multiplication processes of the surface of the insulator is achieved by simultaneously utilizing the grooves in the surface of the insulator and a periodically changing normal electric field generated by intercalation of the metal electrodes, so that the target of improving the vacuum surface electrical resistance characteristic of the insulator is achieved. The method disclosed by the invention is easy to process, low in manufacturing technology difficulty, and beneficial to conversion toward an actual engineering application layer; and development of a pulse power technology is promoted.

The invention relates to a one-time forming mold for a pin-type insulator steel cap, which includes an upper template and a lower template. The left mold and the right mold, the outside of the left mold and the right mold are provided with a T-shaped slider structure, the mold base is provided with a T-shaped guide groove that can fit the T-shaped slider, and the T-shaped guide groove is formed from the bottom of the mold base The outside extends obliquely upwards; the inner surfaces of the left mold and the right mold are respectively connected with a left mold core and a right mold core by bolts, and the combination of the left mold core and the right mold core forms a cavity of a pin-type insulator steel cap. Through the cooperation of the punch and the left and right mold cores, the pin-type insulator steel cap is punched and formed at one time, and the punching effect is good and the yield is high. When demoulding, the left and right molds are lifted by the demoulding cylinder below, so that the left and right molds are opened to both sides under the action of the T-shaped slider and the T-shaped guide groove, and the demoulding of the steel cap is realized.

A multiple-freedom-degree floating electric connector with a self-calibration function comprises a plug (1) and a socket (2), and is characterized in that the socket (2) comprises the components as follows: a secondary positioning pin (11), an after-pin insulator (13), a Phi12 contact pin (14), a Phi6 contact pin (15), a before-pin insulator (16), a Phi3 contact pin (18) and a lug casing (19). According to the multiple-freedom-degree floating electric connector with the self-calibration function, the problems of unreliable electrical connection or electrical connection failures caused by multiple-freedom-degree changes such as displacement, torsion and the like produced by a battery in any direction or at any angle of an installation carrier can be solved; at the same time, damage caused by vibration and impact can be effectively eliminated; the electric connector has the characteristics that the electric connector can be connected and separated rapidly, the operation is convenient, the mechanical property is good, the electric connection is reliable, and the like; and the electric connector has larger economic and social values.

The invention relates to a device for processing looseness of a pin type insulator nut, in particular to a device for charged processing the looseness of the pin type insulator nut applied to line repair, which is characterized in that: the device is formed by matching an upper insulating rod and a lower insulating rod, the end part of the lower insulating rod is connected with a loop bar through a connector, a loop bar handle is connected onto the loop bar, and a sleeve is matched to the top part of the upper insulating rod. The device provided by the invention has a unique structure, and is simple and practicable to operate.

The invention relates to a multi-core automatic short-circuit protection connector structure, and solves the technical problem of not high safety caused by electric leakage of an electric connector inthe prior art. The connector structure comprises a plug and a socket; the socket comprises a socket shell (1), a hole front insulator (2), a hole back insulator (3), a locking nut I (4), multiple jack assemblies (5), multiple grounding jack assemblies (6) and a short-circuit apparatus (7); and the plug comprises a plug shell (9), a pin insulator (10), a fixed contact pin (11), a power-on contactpin (12) and a locking nut II (13). The multi-core automatic short-circuit protection connector structure has the connector automatic short circuit protection function; when the connector is not butted, a jack contact part with a protection effect is in a short-circuit state, so that damage to sensitive equipment from external static and free ions can be prevented; and after the connector is butted, the corresponding short-circuit link is disconnected to form an independently connected circuit for transmitting corresponding electric signals.

The invention discloses a tool for realizing charged replacement of a tension insulator of an extra-high voltage earth electrode line and a method for realizing charged replacement of the tension insulator of the extra-high voltage earth electrode line. The tool comprises a front blocking part, a screw, an insulation pulling plate and a rear blocking part, wherein the front blocking part utilizes a bending plate card and is connected with one end of the screw, the other end of the screw is connected with one end of the insulation pulling plate, the other end of the insulation pulling plate is connected with the rear blocking part, the length of the insulation pulling plate is adjustable, and adjusting holes are uniformly distributed on the insulation pulling plate; when the tension insulator is replaced by the tool, the body position of an electrician can not exceed a first tension insulator at the side of a cross arm, the minimum distance is 0.6m, another electrician on ground utilizes a temperature measurement instrument to detect the surface temperature of a wire, once the temperature continues to raise to be more than 60 DEG C, the electrician on ground needs to warn a No.2 electrician at the equipotential position timely, thereby avoiding personal injury caused by long-time contact to the high-temperature wire and ensuring personal safety of operators.

The invention discloses a hauling-up device for replacing a pin insulator in an electriferous mode and a replacing method. The hauling-up device comprises an insulation support frame, wherein an insulation support frame wire carrier opening is arranged at one end of the insulation support frame. The insulation support frame is further provided with a wire clamping groove and a wire clamping groove cover board which is matched with the wire clamping groove. The insulation support frame is connected with an insulation base board through a hauling-up bar. A fixing device used for being fixed with a cross arm is arranged below the insulation base board. The hauling-up bar comprises an upper sleeve and a lower sleeve which are connected through a bar, wherein a plus thread and a left-hand thread are respectively arranged at two ends of the bar, and the bar provided with the plus thread and the left-hand thread at the two ends is connected with a ratchet wrench. According to the hauling-up device for replacing the pin insulator, the problem of limitation of operation range when an insulation bucket arm car small crane is utilized to replace the pin insulator is solved, and the problem that a line pin insulator with large self-weight is difficult to replace in an electriferous mode is further solved.

The invention relates to the field of electrified repairing of electric line aerial conductors and especially relates to an electrified repairing method for 10kV line aerial conductors and an insulating wire lifter. The electrified repairing method is characterized by comprising the following steps: separating aerial conductors from a cross arm by virtue of a crane and the insulating wire lifter; firstly, lifting the insulating wire lifter to a position vertically above the cross arm by the crane; insulating and covering the aerial conductors by an operator after standing in an insulating bucket vehicle, and then placing the aerial conductors into an insulating hanging bracket of the insulating wire lifter one by one; erecting an insulating clamp spring of the hanging bracket, thereby preventing the aerial conductors from dropping from the insulating hanging bracket; starting the crane and slowly upward lifting the insulating wire lifter for not less than 400mm, thereby being capable of replacing the cross arm under an electrified running condition of the line. Compared with the prior art, the electrified repairing method provided by the invention has the following beneficial effects: the difficulty that a needle type insulator and a conductor cross arm cannot be replaced by utilizing the insulating bucket vehicle under an electrified condition is solved, the loss of electricity-utilizing enterprises caused by temporary power outage is reduced and the power supply reliability and the power sale quantity are greatly increased.

An ultrahigh-power vehicle-mounted power supply electric connector comprises a plug (1) and a socket (2). The plug (1) comprises an upper shell assembly (11), a pin insulator (12), contact pins (13), sleeves (14), a tail cover (15), sealing sleeves (16), check rings (3) and elastic check rings (7) used for shafts. The upper shell assembly (11) comprises an upper plug shell (111) and rivets (6), and the rivets (6) are fixed to the outer side of the upper plug shell (111). The ultrahigh-power vehicle-mounted power supply electric connector mainly is an ultra-large-current vehicle-mounted power supply connector mainly applied to a starter-generator. The plug and the socket are of a direct insertion type, and contact bodies are connected in a crown spring mode and are locked through double hand shanks after being connected in a butt joint mode. The electric connector has the advantages of being convenient to operate, stable in performance, capable of being separated and inserted fast and the like, the insertion and extraction force is soft, and contact is reliable.

The invention relates to an insulation operating rod for fastening pin insulator nuts in an electrified mode, which comprises an insulation sleeve rod and a rotating rod inserted in the insulation sleeve rod, wherein the insulation sleeve rod is internally provided with a cavity, two end ports of the insulation sleeve rod are internally provided with bearings respectively, an upper part and a lower part of the rotating rod are arranged in the bearings respectively and form rotatable connection with the insulation sleeve rod, the upper end and the lower end of the rotating rod extend out of the insulation sleeve rod, the extending part at the upper end is a rod head, the rod head is provided with a sleeve, the extending part at the lower end is provided with a rotating handle, the side wall of the rod head is provided with a fixed plate and a sliding plate with the distance therebetween being adjustable, and the rod head at the lower side of the fixed plate is provided with an isolation cover. Because of implementation of the technical scheme, the insulation operating rod can effectively isolate electrified charge in an operating range through additionally arranging the insulation isolation cover and an insulator, thereby ensuring the safety of the operators. Meanwhile, the insulation operating rod can fasten nuts with a corresponding size through the end sleeve, and can be applicable to other sizes of components which need to be fastened by adjusting the distance between the fixed plate and the sliding plate. The insulation operating rod provided by the invention is high in applicability, and can meet requirements of high-altitude fastening operations.

The invention discloses a fouling fog, ice and snow flash and bird strike prevention double-dovetail type insulator shielding cover and a protection method thereof. The fouling fog, ice and snow flash and bird strike prevention double-dovetail type insulator shielding cover comprises two wedge-shaped wire grooves for a lead to penetrate, wherein the two wedge-shaped wire grooves are formed in a circular-arc-shaped casing; a flexible annular inner skirt which is matched with a porcelain bottle is arranged in the circular-arc-shaped casing; the annular inner skirt is provided with two lead grooves which are matched with the wedge-shaped wire grooves respectively; the circular-arc-shaped casing is provided with a conical spine; each wedge-shaped wire groove and each lead groove are filled with wedge-shaped sealing strips. The fouling fog, ice and snow flash and bird strike prevention double-dovetail type insulator shielding cover is widely applied to a pin insulator which is arranged on a 35 kv and 35 kv below voltage grade alternating current and direct current power transmission line to prevent disasters such as the fouling flash, the fog flash, the ice flash, the snow flash, the bird strike and the lightning stroke, the insulation is good, the weather resistance is good, the installation and the detachment are convenient, the durable effect is achieved, the cost is low, the functions are diversified, and the service life is more than 8 years.

A new cross linked polyolefin material combination that is designed to replace current high-density polyethylene (“HDPE”) materials for use with molded or over-molded electrical transmission products. Such molded or over-molded electrical transmission products include, for example, vise-top pin insulators, line post insulators, F-neck, C-neck, and J-neck pin insulators of classes ANSI 55-3, 55-4, and 55-5, Spacer cable spacers, Brackets, hangers, Line post sensors, cable restraint insulators, and transmission style insulators.

The invention relates to a high-pressure pin insulator with a fixed wire fitting. The high-pressure pin insulator comprises a porcelain insulator body and the fixed wire fitting. The fixed wire fitting is composed of two threaded zinc sleeves arranged on the upper portion of the porcelain insulator body, and a wire pressure plate is arranged on the threaded zinc sleeves and is locked through stainless steel bolts. A steel pin is arranged on the lower portion of the porcelain insulator body, one end of the steel pin is inserted into the porcelain insulator body, and the other end of the steel pin is arranged on a cross arm of a telegraph pole.

The invention relates to a special tool for electrification fastening of a 10-kilovolt pin insulator. The tool comprises an insulation rod, external threads are opened in the upper portion of the insulation rod, an insertion head is arranged, the lower end of a connector is open, internal threads are formed in the lower end, and the lower end of the connector is screwed with the upper end of the insulation rod. an insertion head is arranged at the upper end of the connector, an insertion groove is formed in the lower end of a bushing, and a hexagonal screw hole is formed in the upper end and is covered with a nut cap. By means of the special tool, insulation fixation nuts can be fastened smoothly, and the special tool is high in working efficiency, convenient to use and applicable to aerial operation.

The invention relates to a surface mount-type microwave isolator, wherein a casing thereof is formed with a half-opened cylindrical cavity body and is provided with a port at the sidewall thereof, a lug boss which is provided with a through hole is arranged at the position, opposite to the port, on the sidewall of the casing; the half-opened cylindrical cavity body of the casing is internally provided with a permanent magnet, a uniform magnet conducting chip, a ferrite, a central conductor and a temperature compensation plate, and is also covered by a cover board, the central conductor passes through the port on the sidewall of the casing to stretch out of the cavity body; a port pin insulator is installed in the through hole of the lug boss at the sidewall of the casing, and a port pin is installed in the port pin insulator and is electrically connected with the central conductor. Due to the tight fit between the port pin insulator and the through hole of the lug boss as well as between the port pin and the port pin insulator, the central conductor is welded with the port pin so that the size and the position of the port pin are quite firm and stable, thereby obviously enhancing the reliability of the isolator on the basis of not changing the performance of devices, in addition, the surface mount-type microwave isolator is easy for large-scale production.

The invention discloses an anti-loose sealing electric connector special for a case. The electric connector comprises a plug shell and a socket shell matched and plugged with the plug shell, a pin assembly is assembled in the plug shell through a pin insulator in a sealed mode, a jack limiting glass body is installed in the socket shell, and a plugging hole body assembly is installed on the jack limiting glass body in a limiting and matched mode; and a connecting ring is arranged outside the plug shell, the socket shell sequentially comprises a threaded pipe column A, a threaded pipe column Band a case matching body, the connecting ring consists of a sleeving part and a threaded part, a locking nut is in threaded connection with the outer part of the threaded pipe column B, and an annularlimiting step is arranged at the end part of the case matching body. Electric plugging between electronic components inside and outside the case can be realized, the connection tightness and the sealing performance between the socket shell and the case assembly are improved, an exposed area cannot appear at the case connection position after the socket shell and the plug shell are plugged, the safety and the sealing performance are enhanced, and the external interference condition is also prevented.

The invention relates to the technical field of excess cable boxes, in particular to a cable entry insulating ground excess cable box on a transformer substation. The cable entry insulating ground excess cable box on the transformer substation comprises a box body and an OPGW optical cable downward leading device, an OPGW optical cable enters the box body from the top of a door-shaped frame, through the OPGW optical cable downward leading device, the box body is arranged at the bottom of the door-shaped frame, the optical cable downward leading device comprises an OPGW voltage limiting device and a fixing device, the OPGW voltage limiting device is arranged at the top of the door-shaped frame, and the fixing device is provided with a needle-type insulator. The able entry insulating ground excess cable box on the transformer substation is reliable in insulation and good in grounding performance, effectively solves the hidden danger that the OPGW optical fiber is ablated and the strand is broken, and moreover, the box is convenient to construct and easy to maintain, and has good application value.

The invention relates to a surface-mounted microwave circulator with novel port structure, wherein, a shell is of semi-open cylindrical cavity structure; the side wall of the shell is provided with three port slot holes; bosses are respectively arranged on the positions on the side wall of the shell, corresponding to the three port slot holes; the semi-open cylindrical cavity of the shell is internally provided with a permanent magnet, a uniform magnetic conducting strip, a ferrite, a central conductor and a temperature compensation strip; the top of the shell is covered with a cover board; the central conductor extends out of the cavity through the port slot holes on the side wall of the shell; the three bosses on the side wall of the shell are provided with through holes, and each through hole is provided with a port pin insulator; each port pin insulator is provided with a port pin; and the three port pins are electrically connected with the central conductor. The package structure obviously improves the reliability of the microwave circulator and obviously enhances the welding qualification rate without changing the performances of the circulator. The surface-mounted microwave circulator has the advantages of small volume, excellent performances, high power handling, wide temperature range and the like, thus being applicable to large-scale production.

The invention relates to a multi-contact waterproof rotatable connector, which is applicable to the technical field of electric connectors and solves a problem of poor sealing performance in use of arotatable connector in the prior art. The connector is composed of a socket and a plug, wherein the socket is butted with the plug, the socket comprises a socket tail nut, a sealing ring I, a socket shell, a jack assembly, a contact piece, a jack insulator, a socket shielding sleeve and a socket cable; and the plug comprises a plug tail nut, a plug shell, a plug shielding sleeve, a sealing ring II, a front plug pin, a rear plug pin, a plug pin insulator and a plug cable. The connector is good in sealing performance, the plug and the socket can rotate in the axial direction without influencingthe electric contact state of each contact after the plug is butted with the socket, and requirements of IP67 are met.

A new cross linked polyolefin material combination that is designed to replace current high-density polyethylene (“HDPE”) materials for use with molded or over-molded electrical transmission products. Such molded or over-molded electrical transmission products include, for example, vise-top pin insulators, line post insulators, F-neck, C-neck, and J-neck pin insulators of classes ANSI 55-3, 55-4, and 55-5, Spacer cable spacers, Brackets, hangers, Line post sensors, cable restraint insulators, and transmission style insulators.

The invention relates to the field of live working of distribution lines, specifically to an operation method for disconnecting or connecting 10kV insulated conductor line branch line drainage wires using a short insulating rod. The operation method involves the following components: an electric pole, a tension cross arm mounted on the electric pole, a porcelain cross arm bracket, a porcelain cross arm mounted on the porcelain cross arm bracket, a pin insulator and a main line conductor. A tension insulator and a branch line conductor are installed on the tension cross arm. According to the invention, operation personnel in an insulation bucket of an insulation bucket arm vehicle uses the short insulating operation rod with a certain length to complete the disconnection or connection of the 10kV insulated conductor line branch line drainage wires, so that the operation personnel are far away from a charged body, the indirect live working is realized, and the live working is safer and more reliable.

The invention discloses a novel rectangular electric connector, which comprises a plug and a socket. The plug comprises a plug shell, a pin, a pin insulator, a locking screw I, a locking nut, a spring washer and a small washer. The socket comprises a socket shell, a jack assembly, a jack insulator, a locking screw II and a clamping retainer ring. The novel rectangular electric connector is small in size and compact in structure. The metal shell of the electric connector has the anti-mis-insertion protection function and is provided with a plurality of locking mechanisms. The contact body of the electric connector can be designed in three types, namely a radio frequency coaxial contact body, a large-current contact body and a low-frequency contact body. In this way, the contact bodies can be mixed according to practical situations, so that different signal transmission functions can be realized. Multiple signal transmission functions can be realized through the same connector. The tail part of the contact body can be designed in four tail appearance manners according to the actual requirements of customers, namely the printed board dip-welding type, welding type, and clamped type. The tail filling mode is adopted between the insulator and the metal shell to fix the insulator and the metal shell. The interference fit and glue filling manner is adopted between the contact body and the insulator to fix the contact body and the insulator.

The invention discloses a pin type insulator. The pin type insulator comprises an insulating pin body; the insulating pin body comprises a connecting end part and a fitting end part; the fitting end part is located below the connecting end part; a clamping seat is arranged at the top end of the connecting end part; a wire clamping groove is formed in the clamping seat; a puncture electrode and a puncture tooth pressing block are arranged in the wire clamping groove; the puncture tooth pressing block is located above the puncture electrode; an insulating cover is arranged outside the clamping seat; a steel leg is connected to the bottom end of the fitting end part; a spring washer and a locking nut are arranged on the steel leg in a sleeving mode; one side of the locking nut is connected with a spring; a through hole is formed in one side, located at the spring, of the steel leg; and a limiting clamp is inserted in the through hole. The pin type insulator is reasonable in structure, safe and reliable in performance and easy to install and use, and has relatively high economic and social benefits.

The invention relates to a novel pin insulator, relates to the technical field of lightning protection insulators, and aims to solve a problem that a traditional pin insulator is inconvenient to install so that residence time of installation personnel at a high altitude is too long. The scheme comprises an insulating pin body. A connecting part and a mounting part are mounted at two ends of the insulating pin body; the mounting part comprises a mounting base, and a mounting groove is arranged in one side of the mounting base in a sunken mode; the mounting part further comprises two threaded columns fixed to one side of the mounting base and a clamping block located on one side of the mounting base, one end of the clamping block is rotatably connected to one threaded column, a clamping groove is arranged in the other end of the clamping block, and the other threaded column is clamped in the clamping groove; a limiting piece is mounted at a notch of the clamping groove; and a tight clamping block is fixed to the clamping block, and a locking piece used for pushing the tight clamping block to move towards the mounting groove is connected to each threaded column. According to the scheme, efficiency of mounting the pin insulator by mounting personnel can be improved, high-altitude mounting time of the mounting personnel is shortened, and safety is improved.