45results about How to "Guaranteed safety performance" patented technology

The present invention provides a health-care moisture-proof computer bag, comprising a bag body with an opening, a handle close to the opening, and a zipper for opening and closing the opening; the bag body comprises an inner layer, an outer layer and an insulation layer positioned between the inner layer and the outer layer, and the outer layer (14) is covered with a moisture-proof layer that is 1-2 mm in thickness. Compared with the prior art, the Health-care moisture-proof computer bag has the advantages that the computer bag is moisture-proof and ensures that a computer is not easily damaged in moist environment.

The invention relates to a unit curtain wall connector. A curtain wall system comprises a unit curtain wall and a curtain wall body. The connector comprises an embedded part, a fixed part, a hook part and a limit part for preventing the hook part from loosening. The embedded part is embedded in the curtain wall body, the fixed pat is connected with the embedded part through bolts, the hook part is connected with the unit curtain wall through bolts, the hook part is hooked on the fixed part, the limit part is welded to the fixed part, and the lower end of the limit part is butted upon the hook part. Compared with the prior art, the unit curtain wall connector is capable of guaranteeing safety performance of the curtain wall in earthquake and the like.

The invention discloses a safe and reliable anti-theft door. The safe and reliable anti-theft door comprises an anti-theft door body and a lock installed on the anti-theft door body. The middle of the anti-theft door body is provided with a door in door opening. Guide grooves are formed in the left side and the right side of the door in door opening. The lower ends of the guide grooves extend to the lower portion of the anti-theft door body. A supporting plate which can slide up and down is arranged between the guide grooves in the left side and the right side. The lock is located in the position, on the left side of the door in door opening, of the anti-theft door body and comprises an outdoor panel, a controller, a poking motor, a clutch mechanism, a transmission gear and a locking mechanism. According to the safe and reliable anti-theft door, the structure design is reasonable and reliable; a door in door is conveniently and rapidly opened and closed, the time and effort are saved, and the safety performance of the anti-theft door is ensured at the same time; and in addition, a piece of single lens reflex glass is arranged on the outdoor panel and internally provided with a camera, the camera in the single lens reflex glass cannot be seen from the outside of a room, a video evidence of a thief during unlocking can be collected through the camera, and the case can be rapidly solved.

The invention discloses a spark discharge constant power arc extinguishing method for an intrinsically safe Buck circuit, belonging to the technical field of explosion-proof electrical safety. The intrinsically safe Buck circuit comprises a control circuit, a Buck circuit, a spark discharge constant power circuit, a striking trigger circuit and a blocking circuit, wherein the blocking circuit comprises an output blocking circuit and a control blocking circuit; the output blocking circuit is electrically connected with the Buck circuit; the control blocking circuit is electrically connected with the control circuit and the Buck circuit respectively; the striking trigger circuit is electrically connected with the spark discharge constant power circuit, the output blocking circuit and the control blocking circuit respectively; the spark discharge constant power circuit is electrically connected with the Buck circuit. The method achieves spark discharge constant power control on the open circuits of inductors, so that the electric spark discharge power is smaller than the minimum ignition power and the electric spark discharge energy is smaller than the minimum ignition energy, thus achieving the requirement that the arc power and the arc energy are smaller than the minimum ignition values.

The invention discloses a high-rate charging liquid-cooled battery box, comprising a hollow main box body (50) with an opening at the top; The top of the main box body (50) is covered with and connected with a box cover (10); The main box (50) is internally provided with a battery module, and the battery module comprises a plurality of battery modules (70). Each battery module (70) includes a plurality of battery cells arranged in parallel in the longitudinal direction; A liquid cooling plate (63) is respectively arranged on the front and rear sides of each battery module (70). The left and right sides of the battery module are respectively provided with a liquid cooling pipeline (61); The liquid cooling line (61) is in communication with the liquid cooling plate (63). The invention can effectively control the temperature rise of the lithium battery, thereby ensuring that the battery cell in the battery module is charged and discharged at a high rate, thereby ensuring the safety performance of the battery cell, remarkably reducing the use safety risk of the battery module, and ensuring the overall safety performance of the battery module.

A foldable individual circulation box for transporting flat glass is composed of a supporting fram consisting of oblique supporting rods, back rods and bottom rods, a bottom frame hinged to said supporting frame, a top-back transverse rod linked movably to the top of supporting frame, the glass bearing rods fixed to said bottom frame, the pressing rods movable along the both side rods for fixing glass, and supporting feet.

The invention discloses an integrated management system for self-service rental of public bikes. The management system includes a card reader, a parking garage, a garage door and a transport device. The parking garage is provided internally with parking spaces. A bike fixing device and a parking space positioning device are disposed on the transport device. The transport device transports bikes in front of the garage door to the parking spaces to complete parking. The transport device transports the bikes on the parking spaces to the front of the garage door to complete rental. The rental system of the invention makes full use of the parking areas of the underground, roof and the like, makes use of a multi-layer parking mode to place the public bikes to the parking lots in a centralized and unified manner, and in the renting and parking process, an operator is not required to enter the parking garage in which the environment and the height only needs to meet the requirement of parking the bikes, a lot of construction costs are saved, and the space utilization rate of the parking garage is also improved.

The invention discloses a role access control method. During user access, the user reliability is calculated, and whether an activation condition of the user access is met or not is judged, so that the security performance of a system is ensured; a role concept is used to perform user access management, so that the method has clear role hierarchy management and high expansibility and adaptability, and can be suitable for various cloud storage environments. The role-based access control method has the advantages as follows: authorization management is facilitated; hierarchy division according to working needs is facilitated; a least privilege is convenient to realize; tasks are convenient to share; file hierarchical management is facilitated; and large-scale realization is easy.

The invention provides a V2X communication method and device and a vehicle. TEE and REE are simultaneously operated in an AP processor of the V2X communication device, V2X application programs used for carrying out V2X communication in the AP processor all run in the TEE; therefore, the V2X application program is isolated from other application programs, the V2X application program can independently process the V2X data in the TEE; through the TEE, the V2X application program is ensured not to be influenced or attacked by other application programs when the V2X application program processes the V2X data; therefore, the safety of the V2X application program running in the TEE in receiving and sending V2X data is ensured. According to the V2X communication device provided by the invention, the TEE running on one AP processor can improve the safety performance of the V2X application program during V2X communication, and an independent processor does not need to be arranged, so that the structure of the V2X communication device is simplified, and the hardware cost can also be reduced.

The invention relates to a detachable plug comprising a main female plug body, a male plug connection mechanism, and a locking nut. A plugging mechanism is arranged on the main female plug body and includes a hollow main plugging mechanism body provided with a plugging cavity; a plugging block is arranged inside the plugging cavity; a first plugging slot, a second plugging slot, and a ground plugging slot are formed inside the plugging block; and the first plugging slot, the second plugging slot, and the ground plugging slot penetrate the plugging block. Besides, the male plug connection component contains a main male plug connection body, a first plug terminal, a second plug terminal, and a ground plug terminal; the main male plug connection body is arranged inside the plugging cavity; the first plug terminal, the second plug terminal, and a ground plug terminal are plugged and fixed into the first plugging slot, the second plugging slot, and the ground plugging slot respectively. Therefore, plug types can be changed at any time; the safety performance is high; the service life is long; and the cost is low.

The invention discloses a safe and environment-friendly type chemical experiment table. The safe and environment-friendly type chemical experiment table comprises a table top, wherein an opening is formed in the middle part of the table top; a sealing plate is mounted at the upper side of the opening; an experiment cavity is formed in the lower side of the opening; the experiment cavity is weldedwith the lower side of a support plate; a connecting cylinder is arranged at the outer side of the experiment cavity; a connecting cavity is formed in the outer side of the lower end of the connectingcylinder; the lower end of the experiment cavity is connected with a connecting cover through a sealed bearing; a filter screen is arranged inside the connecting cover; a connecting pipe is arrangedat the lower side of the connecting cover; the right side of the connecting pipe is connected with a connecting bent pipe; a gas suction pump is mounted on the connecting bent pipe; an air purifier isarranged at the right side of the connecting bent pipe; a liquid storage cavity is formed in the lower side of the connecting pipe; a U-shaped connecting frame is arranged at the outer side of the liquid storage cavity; the upper side of the U-shaped connecting frame is fixedly welded with the lower side of the connecting cavity; and support bases are fixedly welded with four corners of the lowerside of the U-shaped connecting frame. The safe and environment-friendly type chemical experiment table can effectively perform chemical experiments on equipment, so that the safety performance during chemical experiments can be effectively ensured.

The invention discloses an assembly structure of a soft-pack battery, which comprises a soft-pack battery and an assembly shell of the soft-pack battery. The soft-pack battery is arranged in the assembled shell; The upper and lower sides of the soft-pack battery are respectively spaced apart from the top inner side and the bottom inner side of the assembled shell by a preset distance; A positive electrode ear and a negative electrode ear are arranged on the right side wall of the soft-pack battery at intervals; Wherein the positive electrode lug is connected with one end of a positive electrode conductor, and the other end of the positive electrode conductor is connected with a conductive block; The conductive block is fixedly arranged at the center position of the upper surface of the soft-pack battery; The negative electrode lug is connected with one end of a negative electrode lead, and the other end of the negative electrode lead is connected with the top inner side surface of theassembly shell. The invention can timely and effectively release the energy stored in the battery under the condition of abuse of the soft-pack battery, prevent the safety accidents such as combustionand explosion of the soft-pack battery, and ensure the safety performance of the soft-pack battery.

The invention discloses a hovercar running data opening system. A unified data description specification and a hovercar running data opening processing method are provided for the hovercar running data, so that the hovercar running data can be opened and shared in real time at a data opening platform; a developer can perform mobile APP and like application developments by authorizing data set downloading, thereby quickly find the site suitable for taking off or landing and acquiring reasonable path planning information, the air traffic disturbance is avoided, and a reasonable specification system and method are provided for the running of the aerial hovercar.

The invention provides an insulated high pressure light-emitting diode (LED) lamp bulb which is suitable for the lighting field. The insulated high pressure LED lamp bulb comprises a thermal dissipation main body, a lamp cover and a lamp holder, wherein the lamp cover is used for clamping the port on the top portion of the thermal dissipation main body, the lamp holder is arranged at the bottom end of the thermal dissipation main body, a lamp plate is further arranged in the insulated high pressure LED lamp bulb, a welding disc on the conducting layer of the lamp plate is connected with the lamp holder through conductor wires, thermal dissipation fixed sheets are pasted on the bottom of the lamp plate through heat conduction insulated double faced adhesive tapes, the thermal dissipation fixed sheets are nested into the port on the top portion of the thermal dissipation main body and are contacted with the thermal dissipation main body tightly, decoration sheets are arranged between the outer periphery of the lamp plate and the thermal dissipation fixed sheets and are used for completely and safely insulating the lamp plate and the thermal dissipation fixed sheets. According to the insulated high pressure LED lamp bulb in the technique scheme, not only is a thermal dissipation problem solved, but also a high pressure resistance test is passed by products, and safety performance of the products is ensured.

The invention relates to an outdoor high-voltage cable head grounding structure and method, and belongs to the technical field of safety protection during power cable maintenance. According to the technical scheme, a merger clamp base (12) is fixedly connected with a grounding ring (2), an arc-shaped clamping groove I (13) is formed in the merger clamp base (12), an arc-shaped clamping groove II (17) is formed in one side of a merger clamp pressing plate (16), a clamping table is arranged on the other side of the merger clamp pressing plate (16), the merger clamp pressing plate is arranged on the merger clamp base in a pressing mode through a fixing bolt (11), the clamping groove I and the clamping groove II are communicated with each other to form a clamping groove, the clamping groove I and the clamping groove II communicate with one another to form a clamping groove, and the wire core is clamped in the clamping groove; and the other side, away from the merger clamp base, of a grounding ring is not coated with an insulating layer, the exposed part is a grounding part, one end of the grounding wire is connected with the grounding part, and the other end of the grounding wire is connected with a grounding drill rod arranged on the ground. According to the invention, the grounding problem of the outdoor high-voltage cable head can be effectively solved, an operator can obtain grounding protection when disconnecting the cable head, and the working safety performance is ensured.

The invention discloses a charging pile system and a charging method based on a streetlamp pole. The charging pile system comprises a charger, and is characterized by at least further comprising a voltage sensor, a controller, a camera, an electric control switch and a fixed member, wherein the voltage sensor is used for detecting charging state of a storage battery; the controller is used for receiving an output signal of the voltage sensor; an I/O terminal of the controller is provided with a wireless communication antenna for communicating with a mobile phone terminal; the camera is used for acquiring field environment data, and an output terminal of the camera is electrically connected with the I/O terminal of the controller; the electric control switch is connected on a power supply input lead wire of the charger in series, and the I/O terminal of the controller is electrically connected with the electric control switch; and the fixed member connected with the streetlamp pole is arranged on a charging connector of the charger, the fixed member comprises an annular plate fixed on the outer side of the streetlamp pole, and a through hole which is convenient for the charging connector to pass through is formed in the side wall of the annular plate. The charging pile system has the advantages of simple structure, high safety performance and convenient use.

The invention provides an additive for a battery, a secondary battery, a battery module, a battery pack and a device, the additive comprises a core structure and a coating layer coating the core structure, the core structure comprises one or more of an aniline compound and a pyrrole compound, and the melting point of the coating layer is in a range of 80-150 DEG C. The additive for the battery provided by the invention can effectively improve the safety performance of the battery in a high-temperature environment.

The invention discloses a safety loop signal collecting system which comprises an elevator control panel. The safety loop signal collecting system is characterized by being formed by a signal collecting device, monitoring chips and a monitoring terminal. The multiple monitoring chips are arranged at the lower end of the signal collecting device and monitor all control loops and all control switches in an elevator, the monitoring terminal is connected with the signal collecting device, and the signal collecting device is connected with the elevator control panel. According to the safety loop signal collecting system, the structural mode that all-directional monitoring on the control loops and the control switches in the elevator is carried out through independent modularization, operating states of the elevator are adjusted according to monitoring data, and meanwhile the monitored operating states are visibly reflected to the monitoring terminal is adopted, so that the functions of intelligent monitoring and safe shutdown of the elevator are achieved, the use safety performance of the elevator is guaranteed, the service life of the elevator is prolonged, and safety accidents are avoided.

The invention relates to a security control method and system for a core framework platform based on application service. The system comprises an application service middle layer, wherein the application service middle layer comprises a client service assembly and a core service platform. The system carries out information interaction through the client service assembly and the core service platform. The core service platform obtains an operation instruction according to an instruction received by the client service assembly and a corresponding relationship with the client service assembly, analyzes the instruction and feeds back data to the client service assembly. The client service assembly sends a feedback performance result of the core service platform to a COM end of the client service assembly. The method and the system have the beneficial effects that the security access, the data and instruction transmission security and the content accuracy of the platform are ensured; timeliness and single point use management is carried out on data transmission; the data security performance is ensured; a decryption key is generated through unitization of a matching multilevel key algorithm; the data content is decrypted; and the security and non-duplicability of the data content are ensured.

The invention provides a self-resetting anti-seismic energy dissipation split column. The self-resetting anti-seismic energy dissipation split column comprises a concrete column and a sliding main plate prefabricated in the interior of the concrete column, wherein the sliding main plate comprises a plurality of vertically and circumferentially arranged sliding plates; the ends, at the center of acircle, of the plurality of sliding plates are fixedly connected with one another; a concrete column is arranged in an area between every two adjacent sliding plates; a friction plate and an auxiliaryplate are arranged between each sliding plate and the corresponding concrete column; each friction plate is positioned between the corresponding auxiliary plate and the corresponding sliding plate; the sliding plates, the friction plates and the auxiliary plates can slide relative to one another; the sliding main plate, the friction plates and the auxiliary plates form an energy dissipation device; one ends of the sliding main plate and the auxiliary plates are connected with a bottom beam or a top beam in a construction area, and the other ends of the sliding main plate and the auxiliary plates are free ends; and the fixed ends of the sliding main plate and the auxiliary plates are respectively positioned at the two ends of the split column. According to the self-resetting anti-seismic energy dissipation split column, the defect that the horizontal deformation capacity of a traditional reinforced concrete column is insufficient under the action of high axial pressure is overcome, thedeformation capacity of a middle column is improved, and the friction among the sliding main plate and the friction plates is beneficial to the energy dissipation capacity of a component.

The invention discloses a window-wiping robot. The window-wiping robot comprises a robot body, a first air pressure detection device, a second air pressure detection device and a controller, wherein the bottom of the robot body is provided with a negative pressure cabin; the first air pressure detection device is arranged in the negative pressure cabin in order to detect air pressure in the negative pressure cabin; the second air pressure detection device is arranged outside the negative pressure cabin in order to detect air pressure of an environment outside the robot body; the controller is connected with the first air pressure detection device and the second air pressure detection device in order to judge whether the robot body can be adsorbed on a surface to be cleaned or not according to air pressure values of the first air pressure detection device and the second air pressure detection device. According to the window-wiping robot provided by the embodiment of the invention, the second air pressure detection device is added for detecting the pressure of the environment outside the negative pressure cabin, so that the detection of the pressures inside and outside the negative pressure cabin can be realized in real time, the operation is simplified, the security performance of the window-wiping robot during use is ensured, the waiting time of a user using the robot can be shortened, and the user experience is improved.

The invention relates to a porous ceramic fiber diaphragm material for a thermal battery and a preparation method thereof. The diaphragm material is composed of ceramic fibers and an inorganic binder. The diaphragm material can be widely applied to high-power output high-voltage thermal batteries and large-pulse thermal batteries, and the two types of thermal batteries can be used as main power supplies of weapons such as torpedoes, submarine-launched nuclear warships, hypersonic cruise missiles, hypersonic aircrafts and near space aircrafts.

The invention discloses a manufacturing method of an aluminum hub. The aluminum hub comprises, by mass, 2.2%-4.9% of Cu, 0.2%-1.8% of Mg, 0.3%-0.9% of Mn, 0.1%-0.2% of Si, 2%-5% of Zn, 0.3%-0.52% of Cr, 0.0001%-0.002% of Pr and the balance Al. The aluminum hub is high in strength, good in tenacity and quality, high in machining precision, not prone to deformation, high in impact resistance and beneficial for product popularization.

An earth leakage circuit breaker and an image forming apparatus are disposed. The earth leakage circuit breaker includes an earth leakage detector, a rectifier, a switching part, and a controller. The switching part is installed on an electric circuit between an alternating current (AC) power supply and the rectifier, and switches between supply and interruption of the power from the AC power supply. The earth leakage detector is installed between the AC power supply and a load. The rectifier rectifies the AC power into direct current (DC) power. The controller causes the rectifier to perform half-wave rectification until earth leakage is detected by the earth leakage detector, and causes the rectifier to perform full-wave rectification when the earth leakage is detected by the earth leakage detector. According to the earth leakage circuit breaker and the image forming apparatus, the earth leakage circuit breaker for the image forming apparatus and other electronic devices can ensure safety performance and saves electric power.

The invention relates to a radio frequency card user identity matching and identification method based on a card pattern. The method comprises the following steps: S100, etching a unique card patternon any surface of a radio frequency card; S200, coating the surface of the clamping line with a layer of transparent adhesive tape composed of a photosensitive material for coating; S300, when the radio frequency card is activated, scanning the card pattern of the radio frequency card through an optical lens, uniquely matching the card pattern with the user identity information, and storing the matched data in a central server; and S400, during verification and identification, scanning the card lines of the radio frequency card through the optical lens to perform identity verification, and establishing a set of brand-new pairing method of the user identity and the radio frequency card to replace a traditional electronic signature mode, thereby protecting the user information security and improving the use safety coefficient of the radio frequency card.

Provided are a bimetallic composite brake disc and a manufacturing method thereof. The bimetallic composite brake disc comprises a connecting mechanism and a brake disc body, wherein the connecting mechanism comprises a flange, a connecting body and a composite body which are formed integrally; the connecting body connects the flange and the composite body, the connecting body is of a round tubular structure, the integrally-formed flange is arranged at one end of the connecting body for connection, the integrally-formed composite body is arranged at the other end of the connecting body, the composite body is in a shape of a circular ring, and the composite body has an inner circular ring edge connected with the connecting body; and the brake disc body is of a circular ring shaped structureand comprises two brake disc planes, the surfaces of the two brake disc planes are parallel, the two brake disc planes are connected by means of a plurality of uniformly cross-distributed cylinders into a whole, and a ventilating duct is formed between the two brake disc planes. The connecting mechanism is made of high strength steel plates, flange cracking or falling off from the top does not occur in the use process of products, and the safety performance of vehicle driving is guaranteed; the weights of the products are reduced; and because the connecting mechanism is made of high strengthsteel plates, the wall thicknesses of the products can be reduced, and the weights are reduced.

The invention discloses an integrated circuit control system for a heavy truck based on a power assembly, and relates to the technical field of heavy truck integrated circuits. The integrated circuit control system for the heavy truck based on the power assembly comprises a control module, the control module is in signal transmission connection with a power supply module, the signal output of the power supply module is connected with a temperature adjusting module, a voltage real-time detection module, a self-checking module and an execution module, and the signal output of the execution module is connected with a first circuit and a second circuit. The integrated circuit in the heavy truck is adjusted and protected through multi-aspect and multi-level data sources. According to the integrated circuit control system for the heavy truck based on the power assembly, through the arrangement of the self-checking module, the situation that the heavy truck continues to operate under the condition that a driver does not know the situation is avoided, early warning is given to the driver, and then the situation that the heavy truck cannot operate suddenly when an integrated circuit of the heavy truck is suddenly damaged is avoided; and therefore, the safety of the driver is improved, and the safety performance of the heavy truck during operation is ensured.

The invention discloses a placement protection device for a nuclear magnetic resonance superconducting magnet. When an existing placing protection device for a nuclear magnetic resonance superconducting magnet is used, the angle of the nuclear magnetic resonance superconducting magnet is inconvenient to adjust after the nuclear magnetic resonance superconducting magnet is fixed by a placement protection device, especially when small-amplitude angle adjustment is performed, the problem of inaccurate angle adjustment also exists, and it cannot be guaranteed that the angle of the nuclear magneticresonance superconducting magnet can be adjusted conveniently, and the stability of the superconducting magnet can also be guaranteed. The protective device comprises a support and a protective frameinstalled inside the support. A power supply is mounted on the side wall of the bracket, wherein two supporting legs are arranged at the bottom of the support, a top frame is fixedly installed at thetop of the support, a driving motor is installed on the side wall of the top frame, a transmission shaft penetrating the support is connected to the side wall of the driving motor, a driving wheel isconnected to one end of the transmission shaft, and a hydraulic pump is installed on the inner wall of the top of the support.

The invention provides an emergency high-pressure hydraulic control one-way valve. The emergency high-pressure hydraulic control one-way valve is characterized in that the upper part and the lower part of a vertical fluid channel I of a T-shaped fluid channel of a valve body are horizontally bolted with a return bolt and an emergency bolt respectively; the return bolt and the emergency bolt are respectively provided with a water fluid channel II and a water fluid channel III; the fluid channels II and III are communicated with the fluid channel I; the change of the horizontal bolting depth positions of the return bolt and the emergency bolt relative to the valve body is used for adjusting the diameter flow velocity at the joint of the fluid channels II, III and I; a piston assembly is mounted in the fluid channel I; one end of the piston assembly is communicated with the fluid channel II, and the other end of the piston assembly is communicated with the fluid channel III through a steel ball I and a spring in a cutoff or conduction mode; and a manual pressure relief steel ball II and an adjusting bolt are further mounted in the fluid channel III. The emergency high-pressure hydraulic control one-way valve is compact in structure and small in size, and is mainly used for railway hoisting equipment. Hydraulic oil control operation is stable, safe and reliable; a manual emergency release reset function is achieved; an oil cylinder stretching and retracting speed adaptive adjusting function is achieved; mounting and debugging are convenient; and the emergency high-pressure hydraulic control one-way valve is economical, practical and worthy of popularization.

The invention discloses a limiting structure used for the inner part of a main body pipeline transportation device of a tube push bench. The limiting structure comprises a circular chassis, connectingplates, a vertical rod and side plates, wherein the periphery of the chassis is uniformly connected with three groups of connecting plates; the middle end of the top of the chassis is connected withthe vertical rod which is longitudinally arranged through a through hole; a plurality of telescopic poles which are longitudinally arranged are uniformly connected between the top of a sleeve ring andthe bottom of a baffle plate; the top of the chassis is uniformly connected with three groups of circular-arc-shaped side plates; and positions, between a roller and the side plates, at the two sidesoutside a mounting plate are transversely connected with positioning rods. The limiting structure is suitable for different working needs, and can be suitable for main body pipelines of different dimensions of the tube push bench, so that the pipelines can be limited by the side plates outside the three side plates; and in use, the main body pipelines are not liable to shake, so that the stable performances are good. Moreover, the main body pipelines can be longitudinally placed and transported, so that the main body pipelines are prevented from rolling in transportation, and therefore, the condition that risk is caused as the main body pipelines drop from the transportation device is avoided.