38results about How to "Avoid unbalanced load" patented technology

The invention relates to the field of agricultural product processing equipment, in particular to a phase adjusting structure and an automatic adjusting tea frying machine based on the phase adjusting structure, the phase adjusting structure comprises a driving part and a transmission assembly, the transmission assembly comprises a transmission shaft, a connecting rod group and a swing rod, and the phase adjusting structure further comprises an eccentric wheel, the screw rod and screw sleeve adjusting mechanism is used for adjusting the distance between the fulcrum of the swing rod and the eccentric wheel, so that the initial angle and the swing amplitude of the frying plate are adjusted. The machine further comprises a rack, a controller and a frying plate; the synchronous belt transmission part is connected with the movable part; and the manual driving part and the automatic driving part are connected with the synchronous belt transmission part. The whole rigidity is effectively improved, vibration in the operation process is restrained, the repeated precision of the motion trail of the frying plate is guaranteed, the service life of the structure is prolonged, complexity and control redundancy of the mechanical structure are avoided, automatic adjustment is achieved, the machining efficiency is higher, and safety is higher.

The application relates to the technical field of mechanical clamping tools, and discloses a novel clamp for coil mold closing, which comprises a strip-shaped plate, a clamping plate, a sleeve, a rotating rod and a protective cover. The clamping plate and the sleeve are arranged at the lower end of the strip-shaped plate, and a hollow area is arranged between the clamping plate and the sleeve to reduce the weight; the rotating rod is in threaded connection with the sleeve, and one end of the rotating rod is a clamping end opposite to the clamping plate; the protective cover is in closed or semi-closed space cooperation with the strip-shaped plate, and the sleeve and the rotating rod are partially covered in the protective cover, so that the protective cover can effectively prevent resin from polluting threads during pouring. The novel clamp is designed in a lightweight and integrated protective integrated mode, the problems of the traditional clamp, such as large volume, easy thread jamming and low installation efficiency, are solved, and the efficiency and reliability of mold closing operation are remarkably improved.

The motor one-way damper comprises a linkage wheel, a linkage block and a brake wheel, the linkage wheel is sleeved with the brake wheel, the linkage block can be movably arranged on the linkage wheel, the linkage block is provided with a linkage part, a pushing part and a brake part, the linkage part is used for being rotationally connected with a motor shaft of a motor, and the pushing part is used for pushing the brake part to move. The pushing part is used for pushing the linkage wheel to rotate along with the motor shaft, and the braking part is used for being matched with the braking wheel to achieve braking; when the motor shaft of the motor rotates forwards, the motor shaft is in linkage with the linkage part to drive the pushing part to push the linkage wheel to rotate along with the motor shaft, and at the moment, the brake part cannot be matched with the brake wheel; when the motor shaft of the motor rotates reversely, the motor shaft is in linkage with the linkage part to drive the brake part to move towards the brake wheel till the brake part is matched with the brake wheel to achieve braking, and the motor shaft stops rotating. The device realizes an automatic braking function when the motor rotates reversely, and is simple in structure, small in occupied space and convenient to integrate on the motor.

The utility model discloses a kind of high-efficiency cold extrusion processing devices of universal shaft spline, it is related to machining technical field, including processing base, the top eccentricity of processing base is fixedly installed with four guide rods in rectangular array, the top of four The guide rod is fixedly installed with top plate, the top center of processing base is provided with universal shaft positioning mechanism, the upper portion of universal shaft positioning mechanism is provided with down mechanism, and the down mechanism includes down plate.The utility model spline cold-pressing die adopts modular design, realizes radial positioning by the attachment of limiting ring and down plate bottom, axial fixation is completed by the thread connection of limiting disc and fixed bolt and bolt hole on top, traditional overall disassembly bolt mode is simplified, only need to loosen single fixed bolt can replace die, substantially reduce die-changing time, simultaneously, different specifications of spline cold-pressing die can be equipped with limiting ring unified size in advance, realize that it is disassembled and installed, significantly improve production line flexibility and production efficiency.

The utility model relates to a kind of bush type air expansion shaft, comprising: always fill air expansion shaft;Bushing expansion piece is set in the large diameter end of the always fill air expansion shaft, and its outer ring is polygonal structure;And reel is set in the outside of the bushing expansion piece and is lifted inner wall by the edge of the polygonal structure when the bushing expansion piece tightens.Compared with prior art, the utility model has the advantages of preventing reel slip, improving winding stability, improving product yield, etc.

This invention belongs to the field of high-voltage insulation testing of solid-sealed poles, and relates to a three-position opening distance tooling for solid-sealed poles and its usage method. It includes: a top cover; a sleeve assembly, the sleeve assembly comprising a sleeve body, a cam mechanism, and a handle; wherein the top cover is slidably connected to the sleeve body and can move axially relative to the sleeve body; the cam mechanism is hinged to the sleeve body and has at least three transition structures; the handle is drivenly connected to the cam mechanism; by rotating the handle, the cam mechanism is driven to rotate, and the different transition structures of the cam mechanism respectively drive the top cover to move relative to the sleeve body to a position corresponding to a different preset opening distance. A single device enables rapid switching of at least three different opening distances, thereby adapting to the different opening distance requirements of various high-voltage insulation tests and significantly improving the versatility of the tooling. It solves the problem of existing solid-sealed pole product opening tooling having many types and time-consuming and labor-intensive installations.

This utility model relates to a wellhead double-seal packer, belonging to the technical field of oil extraction equipment. It includes a packing box, lower sealing packing, an elastic compensation ring, a lower packing gland, an upper sealing packing, and an upper packing gland. The elastic compensation ring comprises an upper compensation ring and a lower compensation ring with conical pressing surfaces. Multiple guide posts are evenly distributed at the bottom of the upper compensation ring, and compensation rubber sleeves are fitted onto the guide posts. The upper and lower connecting flange rings are connected by locking bolts. This utility model, with its double-seal packing and elastic compensation ring, automatically compensates for gaps after wear, improving sealing reliability and reducing leakage rate by over 90%. The compensation spring and rubber sleeve work together to adapt to vibration and pressure changes under different well conditions. The guide posts, stepped holes, and limiting nut structure of the elastic compensation ring provide radial constraint and axial compensation movement space for the compensation ring, ensuring that the compensation force always acts axially on the sealing packing, avoiding force dispersion or uneven loading due to vibration.

The utility model is suitable for high -voltage switch cabinet technical field provides a kind of high-voltage switch cabinet grounding switch operating mechanism, including cabinet and the grounding switch working part in the cabinet of cabinet, the outside of cabinet is provided with sector recess, first limit rod, second limit rod are fixed in sector recess, the utility model adopts the gear rack structure of straight-toothed wheel and straight-toothed surface engagement, converts rotation movement into linear motion, then through first, second limit rod is positioned with auxiliary, while maintaining transmission efficiency, maintain force balance, avoid the local stress concentration problem of gear, and horizontal shift rod is slidably connected with the inner wall of cabinet by slide, provides stable guiding support, reduces the deviation or jam in transmission process, improves reliability, through the cooperation dispersion operating torque of gear rack and elastic component, reduce handle operating resistance, prolong component life, ensure that automatic locking after opening and closing brake is in place, avoid misoperation or loosening, improve operating safety.

The utility model provides a kind of setting roll gap adjustable's crushing production line of silicon material crusher. Material elevator, crusher, screening machine, magnetic separator, feeder and double-layer weighing roller line are sequentially included, the crusher includes pedestal, crushing cavity, left roll, right roll, left roll drive system, right roll drive system for respectively driving left roll, right roll and variable distance drive system, the crushing cavity is set on pedestal, the position of the pedestal corresponding crushing cavity is provided with discharge port, the main body of left roll and right roll is set in crushing cavity, the end of left roll and right roll is respectively connected with corresponding slide plate slidingly connected on crushing cavity, the left roll drive system is connected with left roll, the right roll drive system is connected with right roll, the variable distance drive system is two sets, respectively set in the head end and tail end of crushing cavity, each set includes variable distance drive motor, speed reducer, coupling, T-type screw, screw nut seat, slide plate and screw nut seat.

The application provides a kind of casting blank stop position length measuring system, it is characterized by: including the roller way system for conveying casting blank and the distance measuring equipment for controlling casting blank stop position and measuring the length of casting blank;The distance measuring equipment is 4, four distance measuring equipment is respectively arranged at the four top corners of roller stand, 4 distance measuring equipment is defined as LS1, LS2, LS3 and LS4 respectively;The intersection point of the connecting line between distance measuring equipment LS1 and distance measuring equipment LS3 and the connecting line between distance measuring equipment and distance measuring equipment LS2 and distance measuring equipment LS4 vertical projection coincides with the midpoint of the flow center line of roller way system;The length of the connecting line between distance measuring equipment LS1 and distance measuring equipment LS3 and the connecting line between distance measuring equipment and distance measuring equipment LS2 and distance measuring equipment LS4 is equal, wherein, distance measuring equipment LS1 and distance measuring equipment LS2 are located in the upstream of casting blank conveying direction.

This utility model relates to the field of material handling equipment technology, specifically a device for preventing swaying during the handling of a production line rotor. The device includes a support unit, which comprises a base with a support block fixedly installed inside. It also includes clamping plates, two of which are symmetrically slidably installed within the support block, clamping both ends of the production line rotor. A pressing unit is rotatably mounted above the support unit. In this utility model, by moving the device to the location of the production line rotor to be handled, rotating the crank handle causes the lead screw to rotate, thus fixing the pressing unit. The handling support unit then handles the production line rotor, and the buffer block absorbs lateral impacts, reducing the transmission of swaying. Simultaneously, the contact surface between the flexible pressing block and the clamping plates provides a buffering effect, preventing rigid contact from damaging the rotor surface and effectively suppressing the rotor's vertical jump and torsional swaying during transport. The triangular clamping plates, in conjunction with the lead screw, achieve clamping, ensuring balanced clamping force on both sides and preventing unilateral force from causing rotor tilting or deformation.

The utility model provides a kind of tire blank puncture device and forming equipment, tire blank puncture device, comprising: two annular frames and two annular puncture pieces, two annular frames are oppositely arranged along the axial direction of blank;Two annular frames are away from each other or close to each other along the axial direction of blank;Each annular frame is provided with containing groove, each containing groove is located on the side of corresponding annular frame close to blank;The inner diameter of each containing groove is greater than the diameter of blank;Two annular puncture pieces are one-to-one corresponding with two annular frames, each annular puncture piece is arranged in corresponding containing groove;Each annular puncture piece has puncture part, and the puncture part of each annular puncture piece is used to puncture blank;Wherein, when puncturing blank, two annular frames are close to each other along the axial direction of blank.The tire blank puncture device can effectively solve the technical problem of puncturing blank by manual method in the prior art.

The utility model belongs to the technical field of hybrid mine truck, concretely relates to a hybrid mine truck controller box mounting assembly. It includes that support assembly is installed on the lifting platform of vehicle, first welding support is fixedly installed on the top of support assembly, second welding support is installed on the side of first welding support, the plate is arranged on the side of support assembly and the top of first welding support, the diagonal brace pull rod is arranged on the side of support assembly, one end of diagonal brace pull rod is fixed with the lifting platform, the other end is fixed on the outer side wall of the plate, the thermal management unit is installed on the top of support assembly, motor controller and battery management unit are installed in the inside of support assembly. The utility model is used to solve the problem that the vehicle body partial load is easy to cause the frame damage due to the vibration. The motor controller and battery management unit are fixedly installed by support assembly, play good protection effect, the heat dissipation effect of top thermal management unit is good, avoids excessive electromagnetic interference, and support assembly is fixed on the lifting platform to avoid the vehicle partial load.

The invention relates to the technical field of railway engineering machinery, and provides a hoisting device and a turnout replacement operation method.The hoisting device comprises a basic beam and telescopic beams, and the telescopic beams are located at the two longitudinal ends of the basic beam and stretch out and draw back in the longitudinal direction of the basic beam; the first telescopic supporting assemblies are located at the two longitudinal ends of the basic beam and stretch out and draw back in the vertical direction. The second telescopic supporting assemblies are located on the telescopic beams correspondingly and can stretch out and draw back in the vertical direction; and the hoisting assembly is connected below the basic beam and the telescopic beam in a sliding manner and is used for hoisting the turnout assembly. During replacement operation, the hoisting device and the turnout assembly are integrated on the same flatcar for transportation, the hoisting device can be arranged at different positions of the flatcar in advance to meet the hoisting requirement for turnout replacement, and when transportation is in place, the span and the hoisting point position are switched and adjusted through the first telescopic supporting assembly and the second telescopic supporting assembly; on an uneven track or roadbed, by adjusting the supporting heights of the two ends, it is ensured that the basic beam is horizontal, and hoisting unbalance loading is prevented.

The utility model discloses a kind of crane double drum double drive protection alarm circuit, including PLC controller, frequency converter and operating mechanism, frequency converter is equipped with two and respectively frequency conversion control corresponding operating mechanism, PLC controller controls two frequency converter operation;The drum of operating mechanism is equipped with encoder, and encoder feedback signal is given to PLC controller;The output module of PLC controller has contactor K01 and relay K02, the two normally closed contact of contactor K01 respectively correspond to series connection to the power supply circuit of two operating mechanism, and the normally open contact of relay K02 is in series with buzzer;PLC controller calculates the speed difference of the encoder of two operating mechanisms and the actual height difference of two steel wire ropes, and according to the threshold value set control relay on-off function.The utility model has real-time monitoring, audible and visual alarm and emergency shutdown protection function, can effectively prevent the safety accident such as off-load, steel wire rope fracture caused by synchronous out of control, ensure double drum double drive lifting safety.

The application provides a shell stator hot mounting device, and belongs to the technical field of motor hot mounting, and comprises: a base provided with a frame body; a shell moving assembly comprising a shell moving seat and a shell moving driving element; a heating assembly comprising a heating element and a heating lifting driving element; a stator moving assembly comprising a stator moving seat and a stator moving driving element; and a grabbing assembly comprising a grabbing element and a grabbing lifting driving element. In the application, the shell moving assembly can convey the shell to a heating position or a mounting position, the stator moving assembly can convey the stator to a feeding position or a taking position, and the grabbing assembly can be lifted through the mounting hole on the frame body, the stator can be grabbed from the taking position and pressed into the shell in the mounting position, the shell heating and the stator press fitting are integrated automatic operation, the safety risk caused by manual carrying of the high-temperature shell is avoided, the assembly precision and efficiency are improved, and the automatic continuous operation of the hot mounting process is realized.

This utility model relates to the field of optical cable testing technology, and in particular to an optical cable tensile testing device, comprising a base plate, a U-shaped testing frame fixedly installed on the upper end of the base plate, a controller fixedly installed on the U-shaped testing frame, and sliding grooves on both the left and right sides of the inner surface of the U-shaped testing frame. A traction unit is slidably connected within both sliding grooves, and a tensile unit is fixedly installed at the lower center of the traction unit. A fixing unit corresponding to the position of the tensile unit is fixedly installed on the upper end of the base plate. The optical cable tensile testing device of this utility model achieves stable tension and uniform tension through the traction unit, improving testing accuracy; it adopts a double-end clamping structure to enhance the reliability of optical cable fixation and prevent slippage and detachment; it integrates a tension sensor and a controller to achieve automated testing, and is suitable for high-strength, high-precision optical cable mechanical performance testing, with advantages such as convenient operation, accurate data, and wide applicability.

The utility model relates to concrete processing technical field, concretely is a kind of gravel screening device with anti-blocking function, including feed hopper, the bottom end of the feed hopper is inserted in the middle part of the top of box, the inner wall of the box is equipped with screening mechanism, support column is welded with the just below of screening mechanism in the inner wall of the box, the tail end of the support column is welded with protective box, the inside of the protective box is clamped with thimble mechanism, the bottom end of the box is equipped with aggregate hopper, the bottom end of the aggregate hopper is equipped with discharge gate, the outer wall of the aggregate hopper is equipped with support frame. Improved screening device, the bottom end of the feed hopper is divided into the extension channel, can realize the uniform distribution of raw materials on screening mechanism, avoid raw materials to form accumulation or partial load, reduce the screen hole blockage due to local overload, thimble mechanism can automatically remove the gravel blocked on screen plate, prevent screen hole from being blocked, reduce the production interruption due to blockage, ensure the smooth of screen hole, improve the precision and efficiency of screening.

The invention relates to the technical field of power machinery, discloses a mechanical self-maintaining reinforcement prime mover, and solves the problems that a traditional power device depends on external energy and is high in energy consumption and complex in structure, and an existing mechanical power mechanism cannot continuously amplify power and cannot self-maintain circulating operation. A supporting rack is arranged, pulleys are fixedly installed on the two sides of the upper portion of the supporting rack, a steel rope is wound between the two pulleys, the left end of the steel rope is connected with a left-end balance weight load, the right end of the steel rope is connected with a right-end balance weight load, and a lever connecting rod is connected between the left-end balance weight load and the right-end balance weight load. Springs and the like are fixedly installed at the positions, corresponding to the lower portions of the left end balance weight load and the right end balance weight load, of the lower portion of the supporting rack. The device only needs initial small driving force, depends on gravity and elastic potential energy circulation and lever torque amplification to achieve self-sustaining operation, can output mechanical energy outwards, and is suitable for scenes of power generation, water pumping, mechanical driving and the like.

The utility model relates to a vehicle detection system which comprises a parking garage, an opening and closing door is arranged on one side of the parking garage, four limiting areas are arranged on the bottom wall of the parking garage in a matrix mode, each limiting area comprises a plurality of penetrating holes formed in the bottom wall of the parking garage in a matrix mode, and the vehicle detection system further comprises a machine box. In an initial state, four groups of multiple blocking rods do not protrude out of through holes, the opening and closing door is opened, a vehicle runs into the parking garage, four hubs of the vehicle are stopped on four limiting areas, the hubs and the limiting areas are in one-to-one correspondence, two driving mechanisms are driven to start working according to the size of the vehicle, and the driving mechanisms drive moving blocks to slide along sliding rails; the lifting mechanism drives a plurality of blocking rods on the lifting mechanism to penetrate out of the penetrating holes, and the four sets of blocking rods limit and block four hubs of a vehicle, so that the problems of unbalance loading and translation in the moving process of the parking garage are effectively prevented.

This invention belongs to the field of elevators, specifically relating to an installation structure for an elevator car frame and car bottom. It includes a car frame, a car bottom limiting component, a car bottom, and two sets of support components. The car frame includes two left and right straight beam components, an upper beam component, and a lower beam component. An installation slot is provided in the center of the lower beam component. The car bottom limiting component is inserted into the installation slot of the car frame and has four sides (front, back, left, and right), each with a flexible buffer layer. The car bottom is fitted onto the top of the car bottom limiting component. The two sets of support components are respectively fitted onto the front and rear sides of the lower beam component. Each support component includes a support mechanism fitted with the lower beam component and a vibration damping mechanism fitted onto the support mechanism. The vibration damping mechanism supports the bottom of the car bottom. This invention eliminates the traditional bracket structure, avoiding the problem of brackets occupying pit space, reducing the pit depth requirements for the car frame and car bottom, and saving construction costs.

The invention provides a cargo hold stowage balancing method for a large-scale transportation and delivery unmanned aerial vehicle, which comprises the following steps: receiving a transportation and delivery task instruction, and determining the total weight of cargoes and the quantity of packaging units; the total cargo weight and the number of the packaging units are both smaller than the limit value of the cargo hold of the unmanned aerial vehicle; traversing to generate a plurality of stowage schemes conforming to the load constraint, and screening to generate a stowage scheme set for loading the gravity center envelope; based on a predetermined optimization factor, establishing an efficiency evaluation equation, and determining N groups of candidate stowage schemes from the stowage scheme set; based on a group of fixed air-drop time sequences, determining a stowage scheme which conforms to an air-drop gravity center envelope and has a minimum gravity center dynamic change range from N groups of candidate stowage schemes; and generating stowage information of each packaging unit based on the determined stowage scheme. According to the method, the cargo hold balance control operation method is greatly simplified, the operation and maintenance cost of a user is remarkably reduced, the situation that balance weights are additionally increased due to cargo unbalance loading can be avoided, and the optimal stowage balance scheme can be efficiently and reasonably output.

The application belongs to the technical field of inner ball cage inspection, and particularly relates to a gap inspection device for an inner ball cage of an automobile universal joint, which comprises an inspection table, and a controller is fixedly connected to the upper side wall of the inspection table. When the axial gap of the inner ball cage of the automobile universal joint is inspected, the rubber dust cover can be pried open and air can be blown inwards, so that the hindrance of the elastic restraint of the rubber dust cover to the axial movement is eliminated, and an annular pressure relief channel is formed between the end face of the inner ball cage and the dust cover. In cooperation with low-pressure air blowing, the accumulated lubricating grease at the raceway and the end face can be effectively loosened and dredged, the viscous damping and the high-pressure oil film effect are reduced, the lubricating grease can be smoothly discharged through the pried open gap, the interference of the lubricating grease and the dust cover on the real axial displacement is greatly reduced, and the accuracy, stability and repeatability of the axial gap detection are significantly improved.

The application relates to an electric wheelchair achieving lifting adjustment, which comprises a chassis frame, a seat assembly, a footrest assembly, a backrest assembly and a lifting adjustment mechanism. The lifting adjustment mechanism drives a transmission screw to rotate through a driving unit, moves a guide block along a sliding guide rail, and pushes the seat to stably lift through a connecting rod assembly; a balance air bag and a gravity center adjusting device work cooperatively, a pressure sensor is used for monitoring and adjusting the gravity center, and stability is ensured. The seat width can be adjusted through an adjusting rod, the footrest height and the backrest angle are respectively controlled through an extension rod and an adjusting motor, and individual needs are met. The application optimizes the design of the lifting mechanism, improves the stability, safety and man-machine adaptation capability, and solves the problems of unstable lifting, limited posture adjustment and insufficient safety in the prior art.

The utility model relates to the technical field of insulation board compression test device, provide a kind of insulation board compression test anti-deviation load device, including pedestal, the top of pedestal is fixedly connected with down-pressing mechanism, the down-pressing mechanism includes the U-shaped frame plate of fixed installation in the top of pedestal, the top of U-shaped frame plate is fixedly connected with guide cylinder, the top of U-shaped frame plate is fixedly connected with hydraulic rod, the output end of hydraulic rod is fixedly connected with pressing plate, the top of pressing plate is fixedly connected with guide rod, one side of pressing plate is fixedly connected with U-shaped support, the inside of U-shaped support is movably connected with shaft, the outer wall of shaft is fixedly connected with roller. The utility model can make pressing plate move down by starting hydraulic rod, so that guide rod is guided to slide along guide cylinder, so that pressing plate can be stably pressed down, so that the stability of compression test to insulation board can be improved when pressing plate avoids producing deviation load.

The application provides a driving assembly and a beam clamping device, and relates to the technical field of textile equipment. The driving assembly comprises a base and a driving part. The driving part comprises a driving shaft, a rack, a gear and a driving part. The base and the driving shaft are in sliding fit. The rack is arranged on the driving shaft, and the rack and the driving shaft are arranged in the same direction. The driving part is arranged on the base. The driving part is connected with the gear. The gear is arranged in meshing with the rack. The driving part can drive the gear to rotate, so as to drive the driving shaft to move axially. The application can reduce the volume and has higher clamping stability.

The utility model discloses a kind of parallel axis speed reducer of adjustable spacing, it is related to speed reduction equipment technical field, including shell, the shell side is equipped with adjusting assembly, and shell inside lower end is equipped with oil injection assembly, the adjusting assembly includes the sealing rubber ring of being installed in the inner wall one side of shell, the sealing rubber ring inner wall is rotatably connected with movable disc.The utility model can effectively avoid gear partial load and abnormal wear caused by axis non-parallel by realizing the distance adjustment between horizontal shaft and driving shaft, also can flexibly match different specifications motor or load shaft connection position, to further improve transmission efficiency, reduce vibration noise, through arc spray pipe and oil injection pipe gear set meshing place lubrication cooling, effectively avoid the oil liquid inside shell under long time use can cause liquid level reduction, to further lead to gear set meshing place unable to carry out lubrication cooling treatment, make the wear condition between gear set, further enhance the service life of the device.

This invention discloses a multi-buffered energy-absorbing shell-breaking device for electrolytic aluminum production, comprising a main connecting seat, on which a buffered energy-absorbing component and a shell-breaking mechanism connecting component are mounted. A compression spring, a damping sleeve, and a disc spring are sequentially mounted axially on the energy-absorbing guide rod of the buffered energy-absorbing component. During shell breaking, the counter-impact force is transmitted to the spring assembly via the energy-absorbing slide plate and the push plate, where elastic deformation energy storage and frictional energy dissipation work together to achieve multiple attenuations of the impact energy. The energy-absorbing slide plate and the energy-absorbing sliding seat are guided by a dovetail-shaped guide rail groove and equipped with a multi-layered dustproof self-cleaning system consisting of a dust cover, dust brush, scraper, and sealing plate. The dust cover has a connection hole for receiving compressed gas to form a positive pressure airflow, which blows out dust from the sliding gap at the end of the dust cover where it is slidably connected to the pressure plate. This invention can effectively isolate the transmission of the shell-breaking counter-impact force to the overhead crane or robot structure, extend the service life of the equipment, and ensure the efficient and stable operation of electrolytic aluminum production.

The utility model relates to new energy vehicle manufacturing technical field especially relates to a front hatch structure of reducing wind resistance, including front cabin, front hatch, hinge, electric telescopic link and universal ball, wherein, hinge is located between the front end of front hatch and the front side top of front cabin, is used for rotatably connecting on the front cabin with front hatch, one end of electric telescopic link is hinged to the side portion of front cabin through a universal ball, the other end is hinged to the bottom of front hatch through another universal ball, electric telescopic link is used for driving front hatch to rotate around hinge, to adjust the opening angle of front hatch rear end relative to front cabin. Through electric telescopic link, the initiative adjustment of front hatch rear end angle is realized, can dynamically optimize the airflow transition between front hatch and front windshield during the vehicle driving process, effectively reduces the whole vehicle wind resistance, solves the problem that the existing automobile front hatch cannot adjust the front hatch angle according to the driving state.