105results about How to "Prevent back and forth shaking" patented technology

The invention discloses a fan and a wind wheel locking device thereof. The disclosed wind wheel locking device comprises a lock body and a locking disk, wherein the lock body is arranged on a rack of the fan; the locking disk is fixedly connected with a wind wheel of the fan; a lockpin is arranged in a cavity of the lock body; a locking hole cooperated with the lock pin is arranged in the lockingdisk; axial center lines of the lock body and the lockpin are mutually parallel and spaced by a preset distance; the lock body and the lockpin can synchronously rotate around the center line of the lock body; and the lock body and the rack are provided with at least two fixed connection positions. The wind wheel locking device has the advantages of obviously increasing the locking reliability of the wind wheel and prolonging the service life of the wind wheel; in the mean time, under wind action, the back-and-forth rocking range of the wind wheel is obviously decreased; and therefore, the reliability of the wind wheel is increased, the service life of the wind wheel is prolonged and the potential safety hazard of a unit and maintenance personnel is reduced.

The invention discloses a single-chuck destacking machine, which comprises a rack, wherein a travelling trolley is connected with the rack in a sliding way and is driven by a travelling power device; a lifting frame is connected with the travelling trolley in a sliding way; a lift and pull device is also arranged on the travelling trolley and is used for driving the lifting frame to lift; two clamping plates are horizontally arranged under the lifting frame opposite to each other; limiting grooves are horizontally formed at the bottom of the lifting frame; sliding plates which are connected with the interior of the limiting groove in a sliding way are respectively and fixedly arranged at the tops of the two clamping plates; clamping blocks are respectively and fixedly arranged at the bottoms of the two clamping plates; and a clamping drive device which drives the clamping plates to move in an opposite direction is connected between the tops of the two clamping plates. The single-chuck destacking machine is simple in structure, and can automatically unload brick stacks, and manual brick unloading is not required; therefore, the labor efficiency of workers is high, and the labor intensity is low.

The invention relates to an exhaust assembly of an air conditioner and the air conditioner. The exhaust assembly is mounted between an air conditioner exhaust outlet and an indoor exhaust outlet and is composed of an exhaust pipe, a first joint and a second joint; two ends of the exhaust pipe are respectively spliced into the first joint and the second joint; a first step and a second step are respectively formed on the outer side walls at two ends of the exhaust pipe through injection molding along the circumferential direction, one end of the first joint is fixedly connected with the air conditioner and communicates with the air conditioner exhaust outlet, and the other end of the first joint is integrally connected with a plurality of first elastic clamping and connecting parts adapted and clamped onto the first step; and one end of the second joint communicates with the indoor exhaust outlet, and the other end of the second joint is integrally connected with a plurality of second elastic clamping and connecting parts adapted and clamped onto the second step. The exhaust assembly of the air conditioner is convenient, rapid and efficient in mounting, not easy to loose and convenient to mount and dismount because the joints and the exhaust pipe can be connected by lightly pressing.

The invention relates to the technical field of seawater detection and discloses a portable surface-layer seawater sampling device. The portable surface-layer seawater sampling device comprises sampling equipment, wherein a supporting plate is fixedly arranged at the top part of the sampling equipment; a gripping rod positioned under the supporting plate is movably connected at the side surface ofthe supporting plate; a supporting block is fixedly arranged at the bottom part of the gripping rod; a supporting rod is movably connected at the inner surface of the supporting block; one end of thesupporting rod penetrates through and extends to the inner part of the sampling equipment. The portable surface-layer seawater sampling device disclosed by the invention has the beneficial effects that by the action of the sampling equipment, the surface-layer seawater can be directly absorbed, so that the detection for the seawater quality is convenient, the seawater is prevented from being polluted to influence the ecological health, meanwhile the sampling equipment is convenient in use and carry; by utilization of the gripping rod, the sampling equipment extends into water, and the surface-layer seawater can be pumped by directly pulling the gripping rod, so that the convenience of the sampling equipment in carrying is improved; by utilization of the action of the supporting block, thephenomenon that the supporting rod is blocked when in movement is prevented.

The invention relates to the technical field of equipment mounting, in particular to a mounting device of stereoscopic parking equipment. The mounting device comprises a base. The base is provided with an inner cavity, a first drive motor is mounted on the right side of the bottom of the inner cavity, a first gear is arranged on the front side of an output shaft of the first drive motor, the firstgear is engaged with a second gear, the second gear is arranged in the middle of a first rotary shaft, fixing rods are symmetrically arranged on the two sides of the bottom of the inner cavity, and the first rotary shaft penetrates through the upper portions of the fixing rods to be connected with a third gear. According to the mounting device of the stereoscopic parking equipment, during forwardand reverse rotation of the first drive motor, a top plate is driven to rise or fall, the effect of adjusting the height of the mounting device is achieved, and the working efficiency is improved; and materials needing to be mounted are clamped through clamping blocks, when the mounted materials are moved, back-and-forth shaking of the materials is effectively avoided, potential safety hazards are reduced, meanwhile, the mounted materials can be moved left and right, safe operation of the device is guaranteed, and the mounting cost is reduced.

The invention provides a device for a measuring instrument in civil engineering, and belongs to the technical field of civil engineering. The device comprises a box body. A side wall in the box body is provided with a clamping apparatus. The middle portion of the box body is provided with a screw rod. The lower end of the screw rod is connected with a separator, and the top end of the screw rod isconnected with the top of the box body. The surface of the screw rod is movably connected with a supporting plate. The measuring instrument is mounted above the supporting plate, and a soil analyzeris arranged on the lower surface of the separator. According to the device for the measuring instrument in civil engineering, the instrument can be protected and be prevented from being damaged by anexternal force, the accuracy and the stability of the instrument measurement are improved, the service life is prolonged, and the soil can be sampled and detected.

The invention relates to a vertical type cross-flow air conditioner with a top air outlet function, and a control method. The vertical type cross-flow air conditioner with the top air outlet function comprises a shell, a heat exchanger assembly, a volute assembly, a top air outlet assembly and a front air outlet assembly, wherein the shell is vertically arranged and is of a long cylinder structure, and the heat exchanger assembly, the volute assembly, the top air outlet assembly and the front air outlet assembly are mounted in the shell; the top air outlet assembly is mounted at the top of the interior of the shell, and part of air flow, subjected to heat exchange through the heat exchanger assembly, in the shell is exhausted from the top; the volute assembly is located below the top air outlet assembly, and the front air outlet assembly is mounted in the volute assembly; a mounting support is fixed to the inner side wall of the shell, and the top air outlet assembly is fixedly mounted at the upper end of the mounting support; and gaps are reserved between the lower end of the mounting support and the upper end of the volute assembly as well as between the lower end of the mounting support and the upper end of the heat exchanger assembly. According to the vertical type cross-flow air conditioner with the top air outlet function, and the control method, the mounting support is fixed to the inner side wall of the shell, and the gaps are reserved in the lower end of the mounting support, so that the whole top air outlet assembly is borne by the shell, and the situation that the performance of the whole air conditioner is affected due to the fact that the volute assembly or the heat exchanger assembly at the lower end of the mounting support is overloaded is avoided.

The invention discloses a large-span truss subsection hoisting high-altitude closing measure device and a construction method. The measure device comprises a plurality of bracket units and a support platform; each bracket unit is composed of a U-shaped groove, two support columns and two flange plates I; the support platform is of a rectangular frame structure and is composed of a plurality of stand columns, a cross beam and support columns; each bracket unit is arranged at the top end of the support platform through two adjusting columns and arranged on a cross beam or a connecting beam in the length direction of the support platform; a plurality of flange plates III corresponding to the bracket units are arranged on the upper surface of the cross beam or the connecting beam in the lengthdirection of the top end of the support platform; flange plates II are arranged at the two ends of each adjusting column; the flange plates II at the top ends of the adjusting columns are correspondingly and fixedly connected with the flange plates I at the bottom ends of the supporting columns; and the flange plates II at the bottom ends of the adjusting columns are correspondingly and fixedly connected with flange plates III arranged on the upper surface of the support platform top beam or connecting beam. The device is high in utilization rate, the butt joint precision of truss main pipesis improved, and the safety of the truss unloading construction process is guaranteed.

The invention relates to the technical field of power equipment and discloses a safety protection device for wind turbine sets. The safety protection device comprises a support plate, protection equipment is fixedly mounted at the top of the support plate, a retaining plate located above the support plate is fixedly connected to the top of the protection equipment, a support block is movably connected to the top of the retaining plate, support rods are fixedly connected to the bottom of the support block, and one ends of the support rods extend to the interior of the retaining plate in a penetrating manner. The safety protection device has the advantages that through the action of the protection equipment, rainwater is prevented from entering the interior of a controller to cause the controller to be damaged due to short circuit in water and affect the use of the controller and the wind turbine sets, the rainwater drips on both sides due to the action of the support block, the situation that the rainwater is accumulated at the top of the support block, which is prone to corrode the surface of the support block after long time use so as to cause cracks in the support block is avoided, and the support rod is used to prevent the support block from falling off the retaining plate.

The invention relates to the field of pile pulling, in particular to a working method of a multi-stage pile pulling device with a one-way locking effect. The multi-stage pile pulling device comprisesa manual clamping mechanism, a rotating mechanism, a lifting plate, a guide plate, a buffer treading mechanism, a buffer telescopic mechanism, an automatic clamping device, a timber pile, a jacking pipe and two one-way clamping devices. According to the working method of the multi-stage pile pulling device with the one-way locking effect, a worker is prevented from shaking the timber pile back andforth, breakage of the timber pile is avoided, the process of pile pulling through equipment is not needed, and the worker can conveniently pull the timber pile. The buffer treading mechanism drivesthe buffer telescopic mechanism and automatic clamping arms to clamp and move the timber pile upwards, the pulled timber pile is locked through the one-way clamping devices, and the timber pile is prevented from sliding downwards. The clamping range of the automatic clamping arms is large, frequent replacement of parts is avoided, the timber pile pulling process is rapid, the worker can conveniently and rapidly carry out pile pulling work, excessive labor of the worker is avoided, and the working efficiency of the worker is improved.

The invention discloses a laminating and pressing device for mask production. The device comprises a placement frame and a press-fit table, a plurality of mask cloth placement rollers and a pluralityof cloth guide frames are arranged on the placement frame, the guide frames are located on sides of the mask cloth placement rollers, two cloth limiting frames and a press-fit device are arranged on the outer surface of the upper end of the press-fit table, and the press-fit device is located between the two cloth limiting frames; and the cloth guide frame comprises a mounting column, a sleeve andan arc-shaped piece. The invention discloses the laminating and pressing device for mask production, the position of cloth is limited, forward and backward shaking during cloth conveying is avoided;the cloth can be limited from the two ends and can be supported, so that the cloth is in a tensioned state, the shaking of the cloth is reduced, the pressed cloth is prevented from being separated, the pressing effect of the cloth is improved, the comprehensive pressing of the cloth is achieved, the pressing effect of the mask cloth is better, and a better use prospect is brought.

The invention discloses a soil remediation agent filling device in the technical field of soil remediation. The soil remediation agent filling device comprises a driving device, a rear box is fixedly installed on one side of the driving device, a hydraulic cylinder is fixedly connected to the top of the rear box, a guide block is fixedly connected to the output end of the hydraulic cylinder, a supporting plate is fixedly connected to one side of the guide block, a cavity is formed in the supporting plate, a pneumatic cylinder is arranged in the cavity, and the output end of the pneumatic cylinder is fixedly connected with a connecting plate. According to the device, large-area soil can be loosened, the working efficiency is improved, the labor intensity of workers is reduced, most of agents cannot be blown to the soil outside an outer box under the influence of wind power or vehicle speed, and the problems that agents are sprayed unevenly, and the local soil remediation capacity is poor are solved; and through cooperative use of supporting blocks, rotating rods, side plates, iron plates and iron hooks, the iron hooks can completely enter the loosened soil to stir the soil sprayed with the agents, and the remediation capacity is good.

The invention relates to the technical field of computer devices and discloses a computer device capable of integrating various interfaces. The computer device comprises a connector lug. One end of the connector plug is movably connected with a cable arranging device, one end of the connector plug runs through and extends to the inside of the cable arranging device, the inside of the cable arranging device is fixedly provided with a limit block, one end of the connector plug is movably connected to the inner wall of the limit block, and a positioning block is fixedly mounted on the inside thecable arranging device. Cables are prevented from being randomly placed during use. The problem that the cables are placed in confusion and easily entangled and affect the use of the connector plug issolved. The cables are prevented from swinging in the cable arranging device during use by means of the limit block. The cables are twisted on a cable arranging rod by means of matching of a connecting rod and the cable arranging rod to prevent cable staggering. By means of matching of a tension spring and a fixed rod, the cables can stretch freely, and placement and use of the cables are facilitated.

The invention discloses a high-speed maglev train with controllable aerodynamic wings, which comprises a car body (10), an on-board control system on the car body (10), and a levitation height measurement system on the car body (10) connected with the on-board control system , it is characterized in that: the top of described car body (10) is equipped with more than two roof aerodynamic wings (20), and both sides of car body (10) are all installed with more than two side aerodynamic wings (30) ); the roof aerodynamic wing (20) and the side aerodynamic wing (30) are all electrically connected with the vehicle control system. The high-speed maglev train has good levitation performance, more stable operation, more comfortable riding and better braking performance.

The invention discloses a practical training robot for teaching. The practical training robot comprises a bottom plate, a moving unit, a rotating unit, a sliding rail, a mounting frame and a placementbox. The sliding rail is arranged at the front side of the top end of the bottom plate, the mounting frame is arranged in the middle of the top end of the bottom plate in an array manner, and the containing box is arranged at the top end of the mounting frame. A pushing unit is arranged at the front end of the mounting frame, a moving unit comprises a main motor, two supporting plates, a fixing plate, rollers and a rotating shaft, the two supporting plates are arranged at the bottom end of the fixing plate in a front-back corresponding manner, and the rotating shaft is rotationally connectedbetween the two supporting plates. The main motor is arranged at the rear side of the supporting plate on the rear side, an output shaft of the main motor is connected with the rear end of the rotating shaft, and the rollers sleeve the rotating shafts and are in sliding connection with the sliding rail. A rotating unit comprises an electric telescopic rod, a connecting block, a mounting plate, a rotating shaft, a supporting rod and a rotating motor. The practical training robot for teaching has the advantages of labor saving, accurate classification and high practicability.

The invention relates to the technical field of welding fixtures, and discloses a fixture for welding an electronic component. The fixture comprises a support base of which the top is fixedly connected to support blocks, and the top of each support block is fixedly connected to a support frame of which the top is fixedly connected to a support plate; the side of each support plate is slidably connected to a support rod of which one end penetrates through and extends to the outside of the corresponding support plate; and the side of each support plate is further fixedly connected to transverseplates located on the both sides of the corresponding support rod. Through the effect of the support plates, the situation that the support rods are shaken back and forth and consequently stop blocksand stop plates are shaken so that the electronic component can not be clamped is avoided; through the effect of cross rods, the support rods are fixed directly after the electronic component is clamped, and the situation that the support rods are moved again after being stresses and consequently the electronic component is loosened from a limiting clamp is avoided; and the problem that the position is changed when the electronic component is stressed, and consequently the welding accuracy of the electronic component is affected is solved.

The invention relates to the technical field of welding devices, and discloses a welding device for water turbine volutes. The welding device comprises a welding table. A positioning cylinder is fixedly connected to the inner surface of the welding table. A positioning rod is slidably connected to the middle of the positioning cylinder. One end of the positioning rod is fixedly connected with a bearing plate located above the positioning cylinder. The top of the positioning cylinder is fixedly connected with horizontal plates located on the two sides of the positioning rod. The side faces of the horizontal plates are movably connected with the horizontal plates. According to the welding device for the water turbine volutes and the using method of the welding device, under the effect of thepositioning cylinder, the moving stability of the positioning rod is improved, and the situation that the bearing plate shakes back and forth due to back-and-forth shaking of the positioning rod in the moving process, and consequentially the welding precision is reduced is avoided; and under the effect of the horizontal rods, the positioning rod is directly fixed after being moved, so that the situation that the bearing plate drives the positioning rod to slide downwards automatically under the effect of the gravity is prevented, and then the volute slides downwards automatically and cannot be welded is prevented.

The invention provides an air conditioner unit integral hoisting platform and a construction method thereof. The air conditioner unit integral hoisting platform comprises a platform frame and main hoisting plates connected to the two sides of the platform frame. The platform frame comprises two parallel longitudinal slide rails arranged in a spaced mode and a set of middle cross beams; the tail end of the platform frame is provided with an end cross beam used for bundling a wind rope, and the outer side of the end cross beam is provided with an auxiliary hoisting plate; a cross rod for hoisting is connected to the front ends of the two longitudinal slide rails and located between the two longitudinal slide rails; limiting baffles for preventing the platform frame to moving forwards are arranged in the positions, located at the bottoms of the two longitudinal slide rails, of the inner side of the cross rod correspondingly; sleeves for fixing the platform frame are arranged in the positions, located at the bottoms of the two longitudinal slide rails, of the inner sides of the corresponding limiting baffles; and limiting rods for stopping an air conditioner unit from lateral moving are arranged on the tops of the two longitudinal slide rails of the platform frame. Through the air conditioner unit integral hoisting platform, the technical problems that a traditional air conditionerunit is long in hoisting period and high in cost and the working performance is instable during unit dismantling are solved.

The invention relates to the technical field of transport equipment, and discloses transport equipment for different terrains and an operation method thereof. The transport equipment includes a transport vehicle. Support plates are fixedly connected to the side surfaces of the transport vehicle, the side surfaces of the support plates are movably connected with support rods, one ends of the support rods penetrate and extend to the outsides of the support plates, the side surfaces of the support plates are fixedly connected with transverse plates positioned at two sides of the support rods, theside surfaces of the transverse plates are movably connected with transverse rods, and one ends of the transverse rods penetrate the transverse plates and extend to the insides of the support rods. The transport of fruits is facilitated, by the action of the support plates, the fact that the support rods swing back and forth when moving to cause the support blocks unable to support a positioningplate is prevented, by the action of the transverse rods, the positioning plate is fixed directly after the positioning plate moves, so that the condition that the positioning plate and the support rods automatically fall down under the influence of gravity, to result in the separation of a baffle and a support cylinder, when the vehicle encounters a bumpy road surface, fruits collide inside the transport equipment and are damaged by the stress is prevented.

The invention discloses a special outdoor drinking bag and belongs to the technical field of drinking devices. The drinking bag comprises a bag body and a fastening cap. The drinking body is characterized by comprising a connection base and a water introducing nozzle, the connection base is formed by connecting a water introducing pipe and a base, an external thread is arranged on the outer wall of the water introducing pipe, an internal thread is arranged on the inner wall of the fastening cap, the water introducing pipe and the fastening cap are connected through the threads, the bag body is connected with the base, and a center through hole is formed in the base; the water introducing nozzle is composed of a valve element and a nozzle body, one end of the valve element is embedded in the nozzle body, and the other end of the valve element is embedded in the water introducing pipe. The drinking bag is simple in structure, the connection base has good supporting strength, the overall structural strength of the drinking bag is enhanced, pressure resistance is improved, the situation that a water drinking bag is placed in a knapsack and extruded to be damaged can be effectively prevented, the whole drinking bag has high pressure resistance and is easy to clean and convenient to carry, the quality of water in the drinking bag can be protected, and drinking safety is improved.

The invention discloses a 3D printing pen. An energy storing device is arranged at the top of a printing pen body, a spring is arranged inside the energy storing device, a spring limiting groove is formed in the outer side of the spring, a piston is arranged at the bottom of the spring, a material tank is arranged at the bottom of the piston, a shell is arranged on the outer side of the material tank, a second thread is arranged at the top end of the shell, a connecting piece is arranged on one side of the shell, and a clamping block is arranged at the top end of the connecting piece; a firstthread is arranged on the inner side of the clamping block, a fifth thread is arranged on the outer side of the first thread, a third thread is arranged on the inner side of the fifth thread, and a feeding pipe is arranged on the inner side of the third thread; and a fourth thread is arranged at the bottom end of the feeding pipe, and a pen head is arranged on the outer side of the fourth thread.According to the 3D printing pen, the second thread is arranged at the top end of the shell, the shell is connected with the energy storing device through the second thread, and the 3D printing pen is firm, simple, easy to operate and convenient to mount, demount and overhaul.

The invention relates to the technical field of physical elements and discloses a clamp for replacing an insulator. The clamp comprises fixing plates, fixing blocks are fixedly arranged at the bottomsof the fixing plates, and insulation equipment is movably connected to the side surfaces of the fixing blocks; the two fixing plates and the two fixing blocks are symmetrically distributed at the twosides of the insulation equipment, and a fixing cylinder located at one side of each fixing block is movably connected to the bottom of the corresponding fixing plate. According to the clamp for replacing the insulator, through cooperation of the fixing plates and the fixing blocks, the situation is avoided that the insulator shakes back and forth on the clamp when being stressed, and accordinglymovement of the insulator is limited; through cooperation of the fixing cylinders and fixing rods, a connection plate and a baffle surround the insulation equipment, and the situation is avoided thatthe insulation equipment falls off from the interiors of the fixing cylinders; by using the effect of a torsion spring, the insulation equipment is replaced conveniently; by using cooperation of connection blocks, sliding rods and horizontal rods, the baffle is prevented from being ejected out when being stressed.

The invention discloses a fan and a wind wheel locking device thereof. The disclosed wind wheel locking device comprises a lock body and a locking disk, wherein the lock body is arranged on a rack of the fan; the locking disk is fixedly connected with a wind wheel of the fan; a lockpin is arranged in a cavity of the lock body; a locking hole cooperated with the lock pin is arranged in the lockingdisk; axial center lines of the lock body and the lockpin are mutually parallel and spaced by a preset distance; the lock body and the lockpin can synchronously rotate around the center line of the lock body; and the lock body and the rack are provided with at least two fixed connection positions. The wind wheel locking device has the advantages of obviously increasing the locking reliability of the wind wheel and prolonging the service life of the wind wheel; in the mean time, under wind action, the back-and-forth rocking range of the wind wheel is obviously decreased; and therefore, the reliability of the wind wheel is increased, the service life of the wind wheel is prolonged and the potential safety hazard of a unit and maintenance personnel is reduced.

The invention discloses a constructional engineering building material hoisting device which comprises a hoisting box and a hoisting part. A rotary disc is rotatably arranged in the hoisting part, a movable column is fixedly connected to the outer wall of the bottom of the rotary disc, a hoisting ring is fixedly connected to the outer wall of the bottom of the movable column, fixing rings are fixedly connected to the four corners of the outer wall of the top of the hoisting box, and the fixing rings and the hoisting ring are in bolted connection through a steel wire rope; and the hoisting boxis provided with a limiting mechanism, the outer wall of the bottom of the rotary disc is fixedly connected with idler wheels which are annularly distributed at equal intervals, and the limiting mechanism comprises a movable plate, an abutting plate and a sliding rod. According to the constructional engineering building material hoisting device, building materials with different lengths and thicknesses can be fixedly hoisted, the use flexibility of the hoisting device is effectively improved, a guide plate at the bottom of the hoisting box can be kept in the position parallel to the wind direction, wind can penetrate through the hoisting box, the wind resistance of the guide plate can be effectively reduced through ventilation holes in the guide plate, and the stability in the hoisting process is effectively improved.

The invention relates to the technical field of mechanical processing, and discloses a hardware fitting polishing device. The hardware fitting polishing device comprises polishing equipment, wherein asupporting plate is fixedly arranged on the top of the polishing equipment; a servo motor is fixedly arranged on the top of the supporting plate; a lead screw is fixedly arranged on an output shaft of the servo motor; one end of the lead screw is movably connected to a supporting block; and the bottom of the supporting block is fixedly connected to the top of the supporting plate. The hardware fitting polishing device has the beneficial effects that the hardware fitting polishing device enables a hardware fitting to be directly polished on the ground and is applied to different fields; the supporting plate is used for preventing the servo motor from dropping in a using process, and meanwhile, preventing the position of the servo motor from changing due to the per se vibration in a using process to affect the use of the servo motor; and a sliding block can drive a polishing piece to move to different positions under the action of the lead screw, so that the different parts of the hardware fitting are polished, and therefore, the problem that a traditional polishing piece can only polish one part of the hardware fitting is avoided.

The invention relates to the technical field of battery articles and discloses a bottom support device for a battery box of a new energy vehicle, comprising a bottom plate, a side surface of the bottom plate is fixedly connected with a support plate, the number of the support plates is two, the support plates are symmetrically distributed on two sides of the bottom plate, the inner walls of the two support plates are movably connected with a support block, and a positioning plate is fixedly installed on the top of the support block. Through the action of the base plate, so that the bottom support of the battery box is more stable, components are prevented from affecting use of the bottom support when the bottom support is hit. By using the function of the supporting plate, the heat flow inside the battery box is discharged out of the battery box through the ventilation hole, the overheat inside the battery box is prevented, the service life of the battery is reduced, the safety of thebattery in use is improved, the function of the supporting block is used for cushioning the battery, and the battery is prevented from being collided.