66results about How to "Guarantee work progress" patented technology

The invention discloses a drawing and model integrated visual integration design method. A design institute and a system manufacturer take the responsibility of a system integrator together to finish the work of a designing a drawing for a transform substation and modeling all-station information. In the method, secondary development is performed on an Auto computer-aided design (CAD) by adopting an ActiveX Automation technology by taking the AutoCAD as an information interaction platform so as to establish a native XML database (NXD)-based model text storage database. By adopting the drawing and model integrated integration design, both a design drawing and a model file provided by the design institute can be identified; the bonding of information is finished by the design method so that a CAD file which is finally provided for a user can not only display connection information in the model in a visual mode, but also export the model file for a required unit, a manufacturer or a system to use, and realize the bidirectional switching of the drawing and the model.

The invention provides a power line surveying and measuring technology which comprises the following steps of making and designing a plan draft, comparing the plan draft with a three-dimensional map and a satellite map, modifying the plan draft, determining a GPS (global positioning system) coordinate of a pole, surveying a plurality of coordinate points near the determined coordinate by a surveyor according to the advantages of a model helicopter, feeding back acquired information into a control room, transmitting the acquired information to a processor through a signal receiver, and displaying the acquired information, which serves as a reference of a final plan decision and is processed by a designer, on a display. Furthermore, the model helicopter is used for site surveying, so that the surveying efficiency is improved, and the working area of workers per unit is also enlarged; particularly, when a surveyor surveys a mountain land, the efficiency and the coverage area of the power line surveying and measuring technology are much higher than those of a conventional surveying technology, and the strength of the surveyor is greatly saved. The power line surveying and measuring technology is easy to operate and simple in structure and deserves popularization and application.

The invention relates to the field of formwork reinforcement, in particular to a formwork reinforcement assembly with the self-limiting function. The formwork reinforcement assembly comprises a control mechanism, an expansion mechanism, a limiting mechanism, a lubricating mechanism and an oil drain mechanism. Through the control mechanism, the formwork reinforcement assembly can be used for fixingdifferent formworks conveniently and flexibly, and the applicability of the formwork reinforcement assembly is improved. Through the expansion mechanism, the diameter of an expansion plate can be freely increased or reduced, and the good supporting effect on the formworks can be achieved. Through the limiting mechanism, the expansion plate damaged in the using process can be replaced in time, andthe working procedure and efficiency are ensured. Through the lubricating mechanism, the interior, not convenient to lubricate, of a second control block making contact with a first rotary shaft anda second rotary shaft can be lubricated, and the wear rate of the interior of the second control block is reduced. Through the oil drain mechanism, the air is prevented from going into lubricating oilsupplied to the interior of the second control block, so that parts are isolated from the air, and the service life of the parts is prolonged.

The invention provides a positioning mechanism for silicon rod loading and unloading. The positioning mechanism comprises a first-stage positioning mechanism and a second-stage positioning mechanism; the first-stage positioning mechanism is an AGV control system positioned on a base; the second-stage positioning mechanism includes a fixing base, and a positioning block positioned on the fixing base; the positioning block is fixed on the upper surface of a cantilever through the fixing base; and the fixing base is provided with a front end laser distance measuring sensor. The positioning mechanism for silicon rod loading and unloading guarantees higher positioning precision through multiple positioning, can realize quick high-precision positioning in the transfer process, is convenient for automatically loading or unloading silicon rods and is higher in positioning precision, the efficiency is obviously improved, the steps are reduced, and the working intensity is relieved.

The invention relates to the field of mold technology, in particular to a mold device capable of rapid cooling, which includes a mold body, the mold body includes a fixed mold and a movable mold, and the movable mold is installed on the fixed mold; the bottom of the fixed mold is provided with a U The surface of the U-shaped heat dissipation chamber is provided with several grooves; the left and right sides of the bottom surface of the U-shaped heat dissipation chamber are respectively provided with water inlet pipes and water outlet pipes; The water tanks on the bottom of the chamber are connected; the left and right sides of the water tank are respectively provided with water pump one and water pump two, and the water pump one and water pump two are respectively connected with the water inlet pipe and the water outlet pipe; It is easy to use, easy to operate, and will not produce deformation, which not only ensures the work progress and speed, but also improves work efficiency.

The invention relates to traditional Chinese medicinal material processing treatment equipment. The traditional Chinese medicinal material processing treatment equipment comprises a bottom plate, a grabbing device, a bark scraping device and a block cutting device. The bottom plate is sequentially provided with the grabbing device, the bark scraping device and the block cutting device from left toright. The grabbing device comprises a material containing box and a grabbing mechanism. The bark scraping device comprises an installing frame, a bark scraping mechanism and an auxiliary mechanism.The auxiliary mechanism comprises a rotation motor, a rotation barrel, an auxiliary branch chain and a pressing branch chain. The block cutting device comprises a material conveying mechanism, a workframe, a block cutting mechanism and a collection box. The traditional Chinese medicinal material processing treatment equipment can solve the problems that in the existing bark type medicinal material treatment process, the labor cost is high, the work efficiency is low, potential safety hazards exist, and the work stability is poor; the automatic bark type medicinal material treatment function can be achieved, and the beneficial effects that the labor cost is low, the work efficiency is high, safety is high, and stability is good are achieved.

The invention belongs to the technical field of erecting cables, and discloses an automatic control device and a control method for installing cable hangers at a high altitude. The device is provided with a frame; at least two cable delivery cylinders are symmetrically arranged on the frame; two transmission gears are coaxially fixed with the two cable deliver cylinders; a small driven wheel coaxially fixes two acceleration gears with the two transmission gears; the large drivers and the cams of the acceleration gears and the small drivers in a pair of deceleration wheels are coaxially fixed and are connected to a stepping motor through a coupling; the large driven wheels in the pair of the deceleration gears and a hanger cylinder are coaxially fixed and are driven by the small driver in the pair of the deceleration gears. The invention designs the automatic installation device through the structural characteristics of the cable hanger, and adopts the stepping motor for controlling and driving so as to realize the automation of the installation of the cable hanger at a high altitude.

The invention provides silicon rod loading and unloading transferring equipment which comprises a base and a support, wherein the support is placed on and fixedly connected with the base; one side wall of the support is connected with a manipulator in a sliding way through a first sliding mechanism; the bottom of the manipulator is flexibly connected with a cantilever through a rotating mechanism; a gripping jaw is arranged at the bottom of the cantilever; and the gripping jaw is connected with the cantilever in a sliding way through a second sliding mechanism. According to the silicon rod loading and unloading transferring equipment, the sliding gripping jaw is adopted to grip or release a silicon rod to finish loading or unloading of the silicon rod, manual handling is not needed, quick and accurate positioning and automatic control are realized, the working efficiency is increased, and the cost is reduced.

The invention relates to an integrated junction device for single-phase kilowatt-hour meter inspection and electric strength test. The integrated junction device comprises a test mounting panel, and a compression joint mechanism used for controlling the position of a kilowatt-hour meter, a kilowatt-hour meter terminal junction box slidably connected onto the test mounting panel, an electric energy junction module and an electric strength test junction module are mounted on the front side of the test mounting panel sequentially from top to bottom; the electric strength test junction module is provided with test junction terminals and contact points, the contact points protrude out of the front side of the test mounting panel, and the electric strength test junction module is arranged in the test mounting panel above the electric energy test junction module. By the aid of the device, electric energy detection and voltage detection can be performed and do not affect each other in the test process.

The invention discloses a protective shed for tunnel blasting construction. The protective shed forms a fan-shaped enclosure for a tunnel portal through gravity bases distributed at the position of the tunnel portal, then supports with inverted-L-shaped or C-shaped main body components are arranged on the gravity bases, a shielding protective layer which at least comprises an elastic hard fiber layer, an elastic soft fiber wave-absorbing layer and a sound-absorbing plate layer is covered on the support to form a protective shed cover for covering and shielding the tunnel portal, so as to effectively protect the periphery of the tunnel portal during tunnel blasting construction, and damage to the tunnel portal caused by shock waves, broken stones and blasting noise during tunnel blasting construction is prevented. The protective shed is novel and unique in design, convenient and easy to manufacture, low in cost, excellent in protection effect, high in practicability and good in expansibility, the safety of lives and properties of construction surrounding personnel can be guaranteed while the operation progress is guaranteed, social benefits are guaranteed while economic benefits areobtained for enterprises, and the protective shed has great popularization and application value.

The invention discloses a control system and method capable of preventing ropes of a winch of a crane from being cluttered and a crane, and relates to the technical field of winches of cranes. The control system capable of preventing the ropes of the winch of the crane from being cluttered comprises a cargo boom detection unit and a controller, and the cargo boom detection unit is used for being arranged on a cargo boom to obtain length information and angle information of the cargo boom, and obtain length information and angle information of steel wire ropes which meet the balance relation ofthe head of cargo boom and a lifting hook. The controller is electrically connected with the cargo boom detection unit and is used for obtaining weight of the steel wire ropes and tension force of the steel wire ropes at the head of the crane according to the length information and angle information of the steel wire ropes, calculating hoisting weight including hook weight according to a torque limiter algorithm, and outputting warning information when the hoisting weight is smaller than the tension force.

The invention discloses a large-scale graphene preparation process in the technical field of graphite preparation, which comprises the following step: 1, oxidizing graphite powder by concentrated sulfuric acid and potassium permanganate to obtain graphite oxide, and carrying out vacuum drying on the prepared graphite oxide. Through the arrangement of a grinding motor, a grinding shaft, a first grinding roller, a grinding groove body, a fixing plate, a U-shaped filtering plate, a collecting hopper, a T-shaped frame, a conveying pipe, a communicating pipe, a conveying motor, a conveying shaft, aconveying blade, an aggregate bin, a driving gear, a follow-up fluted disc and a linkage rod, grinding, screening and regrinding are automatically completed in one grinding device, the working process is closely related, separate operation is not needed, the time of manual transfer operation is saved, the working efficiency is improved, and the working progress of graphene preparation is guaranteed.

The invention provides a clamping mechanism for loading and unloading silicon rods. The clamping mechanism comprises a magnet fixing seat. A stepped through hole is formed in the center of the magnet fixing seat. A copper column is elastically connected in the through hole through a spring. An electromagnet is fixed to the magnet fixing seat. A sliding column penetrates through the electromagnet and is in clearance fit with the electromagnet. An iron block is fixed to the end, close to the electromagnet, of the sliding column. According to the clamping mechanism for loading and unloading the silicon rods, the clamping mode is firm and reliable, the silicon rods are further clamped, the effect is good, the silicon rods are further clamped and fixed by applying the clamping mechanism, the safety coefficient in the silicon rod transfer process is increased, operation is achieved through power on and power off, the mechanical maintenance frequency is reduced, and the service life is prolonged.

The invention discloses a corrosion-resistant storage battery thermal insulation device, which comprises a device body, wherein the device body is of a hollow structure; a placement cavity is arranged in the device body; a vacuum thermal insulation plate is movably arranged in the placement cavity; a housing is arranged at one side, far away from the placement cavity, of the device body; fixed grooves are symmetrically arranged in two sides of the housing; and a pull rod is movably arranged in each fixed groove. Through the addition of the fixed grooves, installation blocks, lock screws, springs, extrusion plates and the pull rods, the pull rods can be extruded by using the lock screws and drive the extrusion plates to move; and the extrusion plates fix the vacuum thermal insulation plate, so that use of an adhesive is avoided. Through the addition of a temperature sensor, a vacuum pump, an outlet pipe and a controller, when the working environment temperature is lower than the temperature required by a storage battery for working, the controller starts the vacuum pump and air in the placement cavity is discharged, so that the temperature transfer efficiency is reduced, the condition that the storage battery normally works in a low-temperature environment is ensured, the work progress is ensured and the production cost is reduced.

The invention discloses a transverse moving device for a launch shaft heading machine. The transverse moving device comprises a vertical shaft; the upper end of the vertical shaft is provided with a vertical shaft opening; the bottom of the vertical shaft is provided with a supporting frame; the upper end of the supporting frame is provided with a transverse moving sliding track; and the upper end of the transverse moving sliding track is provided with a sliding plate, and the sliding plate is slidably connected with the transverse moving sliding track. A launch frame platform is arranged at the upper end of the sliding plate; the upper end of the launch frame platform is provided with a supporting track; a shield machine is arranged at the upper end of the supporting track; one side of the launch frame platform is fixedly connected with a steel wire rope; the end, away from the launch frame platform, of the steel wire rope is provided with a traction device; and a chain block is arranged on the steel wire rope. A shield machine main body is directly placed on the launch frame platform, under the state, the shield machine main body on the track can be transversely moved, meanwhile, after movement, the transverse moving device can conduct launching under the same state, the working efficiency is improved, and the working progress is guaranteed.

The invention relates to a method and system for automatic design of a package paper box drawing. The method comprises the steps that structural feature parameters of a to-be-packaged object and material parameters of paper plates to be adopted by a package paper box are acquired; a preset computation model is read, and sizes of all components of the package paper box are computed by the computation module according to the acquired structural feature parameters of the to-be-packaged object and the acquired material parameters of the paper plates; and according to sizes of all the components of the package paper box, a drawing document used to process the paper plates into the package paper box is generated and sent to paper box processing equipment. According to the invention, the sizes of all the components of the package paper box are computed by the computation model based on the acquired structural feature parameters of the to-be-packed object and the acquired material parameters of the paper plates; the drawing document used to process the paper plates into the package paper box is generated and sent to the paper box processing equipment; the computation speed is quick; efficiency is high; no error exists; and reliability and stability are high.

The invention discloses a culture medium storage bottle which comprises a bottle body, wherein a hollow interlayer is arranged at the corresponding position of the bottle body; and the hollow interlayer is filled with a reversible chromic material. The reversible chromic material is added to the bottle body; the temperature change of the bottle body is visualized; the temperature of the bottle body is judged through different colors displayed by the reversible chromic material; an accident that a hand of an operator is scalded is completely eradicated; the personal injury to the operator is avoided; the work progress is effectively ensured; the work efficiency is improved.

The invention is applicable to the field of construction in electric power engineering and provides a multifunctional take-up and payoff trolley. The multifunctional take-up and payoff trolley comprises brackets and tapered racks which are arranged left and right in pairs, and a load-bearing shaft, wherein the left tapered rack and the right tapered rack are arranged in a staggered manner; the load-bearing shaft penetrates through the left tapered rack and the right tapered rack; two ends of the load-bearing shaft are respectively supported on the left bracket and the right bracket. According to the multifunctional take-up and payoff trolley provided by the invention, a split structure is adopted, and the take-up and payoff operations can be carried out through crossed combination of the left tapered rack and the right tapered rack; the multifunctional take-up and payoff trolley can realize the take-up and payoff operations of both the whole reel of wires and scattered wires in a labor-saving and time-saving manner, and no mechanical hoisting is needed; in addition, due to the adoption of the split structure, each part can be carried and operated by one person. The multifunctional take-up and payoff trolley disclosed by the invention is especially suitable for payoff and take-up of scattered wire in a small filed, so that manpower and material resources are saved, the working efficiency is improved, and further, the multifunctional take-up and payoff trolley is convenient to construct, safe and reliable and ensures the working schedule of the electric power engineering.

The invention discloses a powder cleaning device of remanufactured toner cartridge. The powder cleaning device comprises a first bracket, a shell is welded at the top of the first bracket, one side ofinner wall of the shell is fixedly connected with a second motor through a bolt, and one end of the second motor is connected with a first fixed block through a key; a vertical section of the first fixed block is square, and a through hole is formed at the center shaft of the top of the first fixed block, a screw is movably clamped in the through hole; the through hole is formed on the sidewall of the first fixed block, a pressing plate is movably clamped in the through hole; one end of the pressing plate penetrates the through hole, and one end of the pressing plate extends into the first fixed block, and one end of the screw penetrates one end of the pressing plate. Through the device disclosed by the invention, the efficiency of cleaning the surface toner on the toner cartridge can beimproved, and the manpower cost can be saved, the work schedule is guaranteed, the physical labor of the cleaner is reduced, and the residual powder can be collected, the waste can be turned into wealth, and the powder cannot diffuse in the air, thereby reducing the influence degree on the cleaner body by the toner.

The invention relates to a buffering and dust removing device for a coal falling point of an underground coal mine belt conveyor to solve the problems that a large amount of coal dust pollution is easily generated in the conveying process of the underground coal mine belt conveyor, and a lower-level conveying belt is easily damaged. The buffering and dust removing device for the coal falling pointof the underground coal mine belt conveyor comprises an upper-level conveying belt and a lower-level conveying belt, a buffering slide is obliquely arranged between the upper-level conveying belt andthe lower-level conveying belt, and the upper end of the buffering slide is located below the discharging end of the upper-level conveying belt, the lower end of the buffering slide is located abovethe feeding end of the lower-level conveying belt, a dust collecting channel is arranged above the buffering slide, the dust collecting channel and the buffering slide form a tubular space, and the dust collecting channel is connected with a dust removing mechanism through a dust removing pipe.

The invention relates to a rotating mechanism for loading and unloading silicon rods. The rotating mechanism comprises a first rotating mechanism and a second rotating mechanism and is characterized in that a spirit level is arranged between the first rotating mechanism and the second rotating mechanism, the first rotating mechanism comprises a first support, a rotary ring is hinged to the first support, a hanging ring is fixed at the bottom of a mechanical arm, the second rotating mechanism comprises a second support, a rotary block is hinged to the second support and provided with a third slide mechanism, the third slide mechanism comprises a fixing plate provided with third guide rails, the third guide rails are provided with third sliders, and a third screw-nut pair is further arranged between the third guide rails. The rotating mechanism has the advantages that multi-freedom-degree cantilever regulating can be achieved, the rotating mechanism is simple in structure and convenient in regulation, free regulation can be achieved during alignment, positioning can be completed fast and accurately, and efficiency is increased.

The invention discloses a shaping device for metal steel casting part production, and relates to the technical field of high-manganese cast steel. The shaping device for metal steel casting part production comprises a fixing plate. Supporting legs are fixedly mounted at the top of the fixing plate. A box body is arranged above the fixing plate. The ends, away from the fixing plate, of the supporting legs are fixedly connected with the box body. A mounting plate is arranged above the box body. A supporting plate is fixedly mounted at the top of the box body. The end, away from the box body, ofthe supporting plate is fixedly connected with the mounting plate. A hydraulic rod is fixedly mounted at the top of the mounting plate. A feeding bin is fixedly mounted at the top of the box body andcommunicated with the interior of the box body. A stamping base is arranged in the box body. An opening is formed in the stamping base, and an adjusting mechanism is arranged in the stamping base. Theshaping device is simple in structure. The stamping efficiency of high-manganese cast steel is improved conveniently. The working efficiency is improved, and the production and use of high-manganesecast steel are improved conveniently.

The invention discloses a winding device with a cutting function for textile raw material production and processing. The device comprises a bottom plate, a circular plate is fixedly connected to the right side of the top of the bottom plate, an adjusting mechanism is arranged on the front face of the circular plate, the adjusting mechanism comprises a bent plate, bolts, first gears, circular rods,cylinders and circular rings, and the inner wall of the bent plate is rotationally connected with the front face of the circular plate. According to the device, through three rollers on the front face of the bent plate in the adjusting mechanism, the multi-roller replacement is achieved, the working time is saved, the working progress is guaranteed, the working efficiency is improved, textile rawmaterials are convenient to wind, the disorder is prevented, and the practicability is improved; a transverse plate of a cutting mechanism is stressed to rotate to be matched with a cutter to cut thetextile raw materials, so that the trouble of manual cutting is omitted, and the working difficulty is reduced; and a limiting mechanism controls a threaded rod to rotate to enable a second bent plate to move downwards to limit the textile raw materials, so that bulging during conveying is prevented, knotting is avoided, the normal work is guaranteed, and the popularization is facilitated.

The invention discloses mobile equipment for a big data all-in-one machine. The equipment comprises a concave plate. Sliding grooves are fixedly connected to a left side and a right side of an inner wall of the concave plate, protection mechanisms are installed in the two sliding grooves, convex rods are slidably connected to the left side and the right side of the concave plate in a clamped mode,cylinders are fixedly connected to outer sides of the two convex rods, and control mechanisms are installed in the two cylinders. By using the mobile equipment for the big data all-in-one machine, through the protection mechanisms, a problem that when an existing mobile equipment of a big data body machine is used, the equipment cannot be protected is solved. Collision easily occurring during movement is avoided. The equipment is prevented from being damaged, maintenance cost is reduced, a work progress is guaranteed, a service life is prolonged, the problem that the mobile equipment cannot be adjusted is solved through cooperation of a control mechanism and a moving mechanism, a requirement for moving according to a field terrain is met, work difficulty is reduced, practicability is improved, functions are comprehensive, and popularization is convenient.

The invention discloses a detector for the depth of a side hole of a crankshaft flange. The detector comprises a detector body which detects the crankshaft flange, and the detector body comprises a supporting device and a detection in detachable connection with one end of the supporting device. According to the technical scheme, a worker places the crankshaft flange in the supporting device, the detection unit can detect the depth of the side hole of the crankshaft flange as well as the radius of the crankshaft flange, the working efficiency is effectively improved, work time is reduced, work progress is ensured, the labor intensity is reduced, enthusiasm of workers is improved, and the cost is reduced.

The invention provides a movable water-feeding robot protection cabinet. The movable water-feeding root protection cabinet comprises a cabinet body, a bin door capable of being opened upwards is connected to the side of the cabinet body, the bottom of the bin door is provided with a groove for a water-feeding robot moving guide rail to penetrate into the cabinet body, and the cabinet body is internally provided with a control cabinet and a water-feeding robot; the water-feeding robot is slidably connected to the water-feeding robot moving guide rail penetrating into the cabinet body, and the water-feeding robot is electrically connected with the control cabinet. According to the movable water-feeding robot protection cabinet, the movable water-feeding robot is isolated from the surroundingenvironment through the cabinet body, the water-feeding robot can be effectively protected from sun exposure, rain and the like, and the ageing speed of the robot is reduced; meanwhile, the temperature and humidity in the cabinet body can be adjusted so that the water-feeding robot can work within a proper range, thus the water-feeding robot can normally work in various severe environments, and the work schedule of the robot is guaranteed.

The invention relates to the technical field of gauze element cutting, in particular to a high-stability cutting device for gauze element machining and a using method of the high-stability cutting device.The high-stability cutting device comprises a mounting table, two groups of mounting plates and rollers, a penetrating groove A is formed in the upper surface of the mounting table, a sliding groove A is formed in the upper surface of the mounting table, and the two groups of mounting plates are fixedly mounted on the upper surface of the mounting table. Vertical grooves are symmetrically formed in the opposite surfaces of the two groups of mounting plates. An adjusting assembly is additionally arranged, when the distance between the rollers needs to be adjusted, synchronous adjustment can be conducted, so that the purpose of saving cost is achieved, a gauze element shearing device is optimized, when the gauze element is sheared, the gauze element can be cut off at a time, smoothness of a notch is guaranteed, and therefore the purposes of saving time and improving the working efficiency are realized, and in addition, a cleaning assembly is additionally arranged, so that cleaning can be conducted without shutdown during cleaning, and the purpose of guaranteeing the work progress is achieved.

The invention relates to the field of formwork reinforcement, in particular to a formwork reinforcement assembly with a self-limiting function, including a control mechanism, an expansion mechanism, a limit mechanism, a lubricating mechanism and an oil-repelling mechanism; through the setting of the control mechanism, it is convenient and flexible Fixed different templates, which improves its applicability. Through the setting of the expansion mechanism, the diameter of the expansion plate can be freely increased or reduced, which is convenient for the template to be well supported. Through the setting of the limit mechanism , the expansion board damaged during use can be replaced in a timely manner, ensuring work progress and efficiency. Through the setting of the lubrication mechanism, the first and second rotating shafts that are inconvenient to lubricate can contact the inside of the second control block The lubricating effect reduces the internal wear rate. Through the setting of the oil-repellent mechanism, air is prevented from entering the lubricating oil supplied to the second control block, so that the components are isolated from the air and their service life is improved.

The invention discloses a corrosion-resistant storage battery thermal insulation device, which comprises a device body, wherein the device body is of a hollow structure; a placement cavity is arranged in the device body; a vacuum thermal insulation plate is movably arranged in the placement cavity; a housing is arranged at one side, far away from the placement cavity, of the device body; fixed grooves are symmetrically arranged in two sides of the housing; and a pull rod is movably arranged in each fixed groove. Through the addition of the fixed grooves, installation blocks, lock screws, springs, extrusion plates and the pull rods, the pull rods can be extruded by using the lock screws and drive the extrusion plates to move; and the extrusion plates fix the vacuum thermal insulation plate, so that use of an adhesive is avoided. Through the addition of a temperature sensor, a vacuum pump, an outlet pipe and a controller, when the working environment temperature is lower than the temperature required by a storage battery for working, the controller starts the vacuum pump and air in the placement cavity is discharged, so that the temperature transfer efficiency is reduced, the condition that the storage battery normally works in a low-temperature environment is ensured, the work progress is ensured and the production cost is reduced.