33results about How to "High failure rate" patented technology

The invention discloses a connector with quick-plug and self-locking functions. The connector comprises a male connector; a first connecting cylinder is fixedly mounted on one side of the male connector, a contact pin is arranged in the first connecting cylinder, a second connecting cylinder sleeves one end of the first connecting cylinder, a second connecting cylinder is fixedly mounted at one end of the second connecting cylinder, and a jack is fixedly mounted at one end, close to the second connecting cylinder, of the female connector; a protection assembly is arranged on one side of the jack; through the arrangement of the protection assembly, the problems that when the connector is not used, the jacks are in an exposed state, fine dust in the environment easily enters the jacks and is attached to the inner walls of the jacks, the insulating performance of the connector is reduced, the failure rate of the connector is increased, the heat dissipation effect of the connecting position of the connector is reduced, the connector is easily overheated, and the service life of the connector is prolonged are solved. And therefore, the working efficiency of the connector can be improved, and the service life of the connector can be prolonged.

The utility model aims to provide a capacitor aging oven which comprises an oven frame and a baking assembly, the baking assembly comprises a baking oven, a tail sealing plate, a door plate, a first adapter, a second adapter, two telescopic rods and two cylinders, the baking oven is arranged on the oven frame, one side of the tail sealing plate is connected to the rear side of the oven frame through the first adapter, and the other side of the tail sealing plate is connected to the rear side of the oven frame through the second adapter. The two telescopic rods are arranged on the two sides of the box frame respectively, the output ends of the two telescopic rods are connected with the two ends of the tail sealing plate respectively, one side of the door plate is connected to the front side of the box frame through a second adapter, the two air cylinders are arranged on the two sides of the box frame respectively, and the output ends of the two air cylinders are connected with the two ends of the door plate respectively. Therefore, when the baking oven breaks down, the baking oven can be maintained by opening the tail sealing plate, so that the maintenance time of the baking oven is shortened, meanwhile, the door plate is pushed by the air cylinder to be rotationally opened on the oven frame, the door bodies of other oven bodies are prevented from being influenced to be opened or closed, the multiple oven bodies can be opened and closed at the same time, and the use efficiency of the capacitor aging oven is improved.

The invention discloses a green energy power supply device for an electric meter, which comprises an L-shaped mounting plate, an electric meter box and a photovoltaic panel, the L-shaped mounting plate is fixed on a proper object, the electric meter box is fixed on the L-shaped mounting plate, the electric meter box is connected with the photovoltaic panel through a wire, the surface of the electric meter box is provided with a box door through a hinge, and the box door is connected with the photovoltaic panel through a wire. An observation window is arranged in the middle of the box door, a plurality of intelligent electric meters are arranged at the upper end in the electric meter box, and a storage battery is arranged at the lower end. Solar energy or wind energy is converted into electric energy to charge the storage battery, the electric energy is provided for the electricity meter through the storage battery, effective utilization of all generated energy is guaranteed, waste of the generated energy is avoided, meanwhile, the photovoltaic panel and the fan blade plate are unfolded in an X shape, the power generation mode is changed according to different conditions, and the power generation efficiency is improved. The limitation that a power supply device has high requirements for ambient light is overcome, and solar power generation and wind power generation can be freely converted in different sunlight environments.

The utility model discloses a folding chair, which relates to the technical field of furniture products and comprises a plurality of bearing parts, a plurality of adjustable supporting columns respectively mounted at the tops of the bearing parts in a one-to-one correspondence manner, a plurality of sliding parts respectively mounted on the outer sides of the adjustable supporting columns in a one-to-one correspondence manner, a plurality of side supporting rods respectively mounted on one sides of the bearing parts, and a folding component, the base is installed on the tops of the adjustable supporting columns. When the folding chair is carried, a user rotates the two side supporting rods which are rotationally connected with each other to fold the bearing pad, at the moment, the folding chair is small in occupied space, convenient to carry by the user and simple in structure, when the folding chair is used, the user reversely rotates the two side supporting rods which are rotationally connected with each other to unfold the folding chair, and the folding chair is convenient to carry and use for different users. According to the folding chair, the height can be adjusted through the adjustable supporting columns, the bearing cushion has a certain movement freedom degree and adapts to slight movement of a user in a static sitting state, and meanwhile the design that cotton is added between the double-layer 600D oxford fabric and the double-layer 600D oxford fabric is adopted, so that the comfort degree is improved.

This utility model belongs to the field of fuel cell accessories and discloses a quick-connect fuel cell power distribution box. The power distribution box consists of a top cover and a base; the base has a support surface for placing power distribution and control components, and a fixing pad is connected to the bottom of the base; a sealing ring is provided at the top edge of the base; the top cover is placed on the base. This utility model fuel cell power distribution box has low cost, small size, low failure rate, and high waterproof rating. The internal structure of this power distribution box fixes relays, fuses, and wiring harness terminals without the need for connectors, which effectively saves costs. Since there are no control chips and circuit boards inside, internal space is saved and the failure rate is reduced. This power distribution box has added waterproof plugs and sealing plugs, and the waterproof rating reaches IP67.

The utility model discloses a gauge object lifting appliance capable of being fully automatically opened and closed through gravity, which comprises a fixed frame, and a movable frame is connected above the fixed frame in a sliding and lifting manner; the fixed frame and the movable frame are jointly connected with two clamping jaws forming a splayed shape in a sliding mode, the two clamping jaws can be driven to be opened after the movable frame moves downwards, and the two clamping jaws can be driven to be closed after the movable frame moves upwards. The fixed frame is provided with a fixed clamping block and a movable clamping block which are arranged in an up-down mirror image mode and are in an isosceles trapezoid shape, the position of the fixed clamping block is fixed, and the movable clamping block can slide in a lifting mode relative to the fixed clamping block; the movable frame is hinged to two clamping hooks which are arranged in an opposite mirror image mode, the ends of the two clamping hooks are provided with inclined faces, the two clamping hooks can be hooked with the fixed clamping block after the fixed clamping block is separated from the movable clamping block, and at the moment, the two clamping jaws are kept in an open state.

The utility model discloses a land wheel transmission device of a seeding machine, which comprises a walking part consisting of a tire, a rim, a hub, a wheel shaft, a land wheel support and a connecting shaft, and further comprises a transmission part connected with the walking part, the transmission part is installed on an installation plate connected with the walking part and comprises a main transmission chain wheel, a main transmission chain, a chain tensioning mechanism, a lower connecting plate, an upper connecting plate, a jaw clutch chain wheel, a fixed separation claw, a sliding separation claw, a land wheel transmission shaft, a driven chain wheel, a flat key, a driving coupler, a front connecting shaft, a sliding plate and a connecting piece. Based on the principle of chain transmission, the utility model provides an innovative and practical power transmission clutch scheme, solves the problems of complicated structure, easiness in abrasion, high failure rate and the like of the traditional clutch, and improves the practicability.

The invention discloses a mechanical screw-down synchronizing device of a hot continuous rolling roughing mill, which comprises a transmission side screw-down speed reducer, an operation side screw-down speed reducer, a transmission motor, a synchronizing shaft, a WGT10 coupling, a brake and a connecting bolt, and is characterized in that the synchronizing shaft is directly connected with the transmission side screw-down speed reducer and the operation side screw-down speed reducer; and the two sets of WGT10 couplings are respectively connected between the synchronizing shaft and the transmission side screw-down speed reducer and between the synchronizing shaft and the operation side screw-down speed reducer. The device improves positioning precision, avoids defects of rolled pieces, reduces failure rate and maintenance cost, improves yield and product quality, is already applied to 1450mm and 2050mm units, and effectively solves many problems of electromagnetic clutches.

The invention discloses a low-cost high-reliability large-current TYPE-C fast-charging female head and an electronic product, the low-cost high-reliability large-current TYPE-C fast-charging female head comprises an insulation body, a female head terminal group and a shell, the female head terminal group comprises a first GND terminal, a first VBUS terminal, a second VBUS terminal and a second GND terminal, the front sides of the welding pins of the 4PIN terminals are connected with vertical plate parts, and the welding pins of the 4PIN terminals are connected with vertical plate parts. The top and the bottom of the vertical plate part are used as a first GND upper-row contact part, a first GND lower-row contact part, a first VBUS upper-row contact part, a first VBUS lower-row contact part, a second VBUS upper-row contact part, a second VBUS lower-row contact part, a second GND upper-row contact part and a second GND lower-row contact part respectively, so that 8PIN current transmission terminal contacts of a TYPE-C standard are provided through the 4PIN terminal, and the current transmission efficiency is improved. The terminal group is compatible with a fast charging protocol pushed by a USB association, the structure is simple and ingenious, the terminal group is convenient to integrally design and manufacture, the cost is effectively reduced, the sectional area of a contact part is effectively increased, the larger current transmission requirement is met, and the structural strength, the durability and the reliability are enhanced.

The high-protection outer rotor axial flow fan comprises an outer rotor motor and a wind wheel, the outer rotor motor comprises a base, an outer rotor assembly, a rotating shaft and a stator assembly, and the base comprises a bottom plate and a sleeve protruding upwards from the middle of the top face of the bottom plate. The shaft support is installed on the two bearings, the top end of the shaft support is connected with the outer rotor assembly, the stator assembly is arranged outside the sleeve in a sleeving mode, an annular boss is arranged on the edge of the bottom plate, and a labyrinth sealing structure is formed by the annular boss and the end of the outer rotor assembly. The wind wheel comprises blades and a hub, the blades are installed on the outer side of the hub, and the hub is installed outside the outer rotor assembly through an installation support. The base is sleeved with an outer water retaining ring, an inner water retaining ring is installed on the installation support, and the outer water retaining ring and the inner water retaining ring are matched to form a water retaining device on the periphery of the labyrinth sealing structure. The waterproof and dustproof levels of the axial flow fan are greatly improved, the reliability is high, and the failure rate is low.

This invention discloses a dual closed-loop control system and method for rubber mixing pressure in a rubber mixing mill, relating to the field of automation control technology. The system sets a target pressure, monitors the feedback value of the external pressure closed loop, acquires the external pressure closed loop feedback value, calculates a first input value based on the target pressure and the external pressure closed loop feedback value, obtains a first output value based on the deviation between the first input value and a preset first input value threshold, uses the first output result as the input value of the internal pressure closed loop, collects the detected value of the pump inlet pressure, calculates a second input value based on the first output result and the detected pump inlet pressure, adjusts the control pressure of the pump inlet based on the deviation between the second input value and a preset second input value threshold, and controls the speed of the servo motor through a servo controller to stabilize the pump inlet side pressure.

The invention relates to a vehicle-mounted folding screen automatic folding and unfolding device and method based on one-way linear motion. The automatic folding and unfolding method comprises an outward folding process and an inward folding process. On one hand, on the basis of one-way movement in the linear direction perpendicular to the bin opening, synchronization and coherence are formed between inward folding or outward extending and overturning in cooperation with a movement guide path formed by the translation section and the flattening section, namely, folding and unfolding are completed in mutual movement cooperation, the power structure is optimized, and the manufacturing cost and the failure rate are reduced; on the other hand, on the basis of cooperation between the two motions, the folding screen does not need to be completely exposed, the unfolded folding screen is in a one-way self-locking state and is close to a bin opening to be flatly unfolded, meanwhile, the needed unfolding and folding space is effectively shortened, effective shielding can be formed, and the overall attractiveness is improved.

The invention relates to the technical field of gearbox gear shifting control, and discloses a tractor pneumatic control gear engaging device which comprises an upper cover fixedly installed on a gearbox, gear shifting blocks and air cylinder assemblies, the multiple gear shifting blocks are installed in the upper cover in a sliding mode, and the telescopic ends of the air cylinder assemblies are used for pushing and pulling the gear shifting blocks to horizontally move left and right. The air cylinder assembly comprises a cylinder body, a first piston and a second piston are installed on the cylinder body in a sliding mode, and a first air injection hole, a second air injection hole and a third air injection hole are formed in the surface of the cylinder body. According to the pneumatic control gear engaging device, the air cylinder assemblies capable of achieving three-gear positioning are arranged, the air cylinder assemblies can drive the gear shifting blocks to be switched among the high gear, the neutral gear and the low gear, the requirement for controlling the meshing sleeve to slide left and right is met, the multiple air cylinder assemblies control the gear shifting blocks to act independently, a gear selecting air cylinder set is omitted, the overall structure of a gear engaging mechanism is simplified, and the gear engaging device is convenient to use. The size is reduced, the failure rate is reduced, and convenience is provided for later use, maintenance and debugging.

The invention discloses a device and method for testing the electrical performance of a GIS insulation basin-type insulator, and belongs to the technical field of insulator electrical performance testing. Comprising two supporting plates symmetrically arranged on the two sides, a middle sliding rail installed between the two supporting plates, and a trolley base installed below the middle sliding rail. The basin-type insulators are vertically installed on the middle sliding rail, electrodes are arranged at the front ends and the rear ends of the basin-type insulators, the front ends of the electrodes are connected with the convex surface conductor of one basin-type insulator, the rear ends of the electrodes are provided with contacts, and the contacts make contact with the inner concave surface conductor of the other basin-type insulator to form a series circuit. A plurality of sliding grooves are formed in the supporting plate, and the supporting rods are movably installed in the sliding grooves. The middle sliding rail is matched with the supporting rod and is used for supporting and guiding the basin-type insulator to slide; a clamping groove is formed in the middle sliding rail. A central roller movement mode is adopted, the failure rate of a wheel type movement mode is reduced, assembly is easy and convenient, and the transportation smoothness is higher than that of the wheel type movement mode.

The utility model relates to the technical field of vehicles, in particular to a spring cushion and a vehicle, the spring cushion comprises a main body part, the main body part is arranged on a mounting surface of an air spring, and the main body part covers the mounting surface; reinforcing ribs are arranged on the mounting surface, the shape of the limiting part is matched with that of the reinforcing ribs, and the limiting part is connected with the reinforcing ribs in a matched mode when the main body part is assembled to the mounting surface. The spring cushion provided by the utility model is mounted on the mounting surface of the air spring, so that the air spring can be separated from a specified position, used for being connected with the air spring, of a vehicle body on the mounting surface, the stability between the air spring and the mounting surface can be effectively ensured, the risks of displacement and falling of the spring cushion are remarkably reduced, and the service life of the spring cushion is prolonged. Therefore, the air spring is prevented from being abraded and influencing the service life of the air spring due to rigid contact between the air spring and the designated position of the vehicle body in the vehicle driving process, and abnormal sound generated at the position where the air spring is located can be avoided.

The utility model discloses a kind of mechanical dryer combination structure for new energy vehicle, including the combination of mechanical dryer and air pressure switch;Mechanical dryer includes control interface;Air pressure switch is arranged at the control interface of mechanical dryer;Wherein air pressure switch can be fed back air pressure data information to VCU by control interface, and then VCU controls the start or stop of the electric air compressor of whole car according to air pressure data information.The utility model discloses the mechanical dryer combination structure for new energy vehicle, can be combined by air pressure switch and mechanical dryer, realize the effective control of VCU to the start-stop of electric air compressor, effectively solve the problem that electric air compressor is always in continuous working state in prior art.

The invention discloses a baffle device for an ion etching fine-tuning machine, and relates to the field of ion etching fine-tuning machines. The baffle device for an ion etching fine-tuning machine comprises: a baffle control power supply for controlling high-frequency voltage output; a baffle control data line for outputting the baffle control power supply output voltage to a baffle installation control circuit board; a baffle installation control circuit board for generating an electric field for each baffle when powered on, stopping the 23Ar ion flow at the baffle and exhausting it from a vacuum chamber as the vacuum is drawn away; a multi-channel baffle mechanism for separating the baffle from the outside; a baffle for parking 23Ar ions; a baffle control power supply connected to a baffle control data line. Compared with the prior art, the invention has the following beneficial effects: compared with the original baffle mechanism, the invention improves the switching speed from the original 10ms to 30ms to within 1ms. The original baffle is a mechanical structure, which will produce certain mechanical wear and has a relatively high failure rate; the existing electronic baffle will not produce mechanical wear.

The application discloses a kind of diagnosis method and system of vehicle-mounted generator fuse, and the fuse is connected between generator and battery, one end of the fuse connection generator is point A, and one end of the connection battery is point B, when vehicle is not started, the voltage of point A and point B is collected, whether the fuse is suspected abnormal according to the voltage of point A and point B is judged;If it is judged that the fuse is suspected abnormal, after the vehicle is started, the voltage of point A and point B is collected, whether the fuse is open circuit according to the voltage of point A and point B is judged using first method;If it is judged that the fuse is normal, after the vehicle is started, the voltage of point A and point B is collected, whether the fuse is open circuit according to the voltage of point A and point B is judged using second method.The application is staged to the characteristic judgment when vehicle is running, whether the fuse of generator is open circuit can be accurately judged, avoid all misjudgment and missing judgment situation.

This utility model relates to the field of battery technology and discloses a sealing device for sealing the electrolyte inlets of battery cells. It includes a feeding body, sealing films, and a film-applying mechanism. The feeding body has an adhesive surface; multiple sealing films are adhered to the adhesive surface. The film-applying mechanism includes a driving component, a picking component, and a peeling component. The picking component is connected to the driving component, and the peeling component is disposed on the picking component. The driving component is used to drive the picking component to grasp the feeding body until the multiple sealing films on the feeding body are applied one by one to the electrolyte inlets of multiple battery cells, and to drive the peeling component to peel the feeding body off the multiple sealing films. This utility model integrates multiple sealing films onto the feeding body, facilitating the picking of sealing films. Furthermore, the integrated arrangement of multiple sealing films on the feeding body allows for batch sealing of the electrolyte inlets of multiple battery cells, improving sealing efficiency.

The invention relates to the technical field of data processing, in particular to an intelligent auxiliary data processing method for offshore wind power. The method comprises the following steps: performing data acquisition by using the fan auxiliary detection system and the offshore booster station monitoring system respectively; performing data transmission on the acquired data based on the station side and the station-to-center side; wherein in the transmission process, an AES algorithm is adopted for encryption; carrying out data storage on the encrypted data; and carrying out data processing on the stored data through the gateway system. By implementing the intelligent auxiliary data processing method, the cost can be significantly reduced. For example, a high-precision sensor and a data preprocessing technology can capture and process key operation data in time, so that the probability of fault occurrence and the number of times of maintenance are reduced.

This invention discloses a vacuum die-casting system, a high-vacuum die-casting method, and their applications. The vacuum die-casting system includes a horizontal die-casting machine, a die-casting mold, a vacuum pump, a vacuum tank, a filter, a hydraulic vacuum valve, a vacuum valve controller, a displacement acquisition device, and a displacement grating. The high-vacuum die-casting method sequentially includes melting aluminum alloy liquid, evacuating the vacuum tank, preheating the mold, spraying a release agent, closing and locking the mold, low-speed injection, evacuating the mold cavity, high-speed injection, pressure holding and cooling, mold opening, and part removal. This invention, through scientific design of the vacuum die-casting system and optimization of the vacuum die-casting process, shortens the response time of the hydraulic vacuum valve to 35ms and increases the vacuum degree of the mold cavity to 50mbar, achieving high-vacuum die-casting molding, improving the density, mechanical properties, and dimensional accuracy of the die-cast parts, and reducing the equipment failure rate. This invention also discloses the application of the described vacuum die-casting system and method in large and complex aluminum alloy die-cast parts for new energy vehicles.

The utility model provides a dry-mixed mortar mixer, which belongs to the technical field of material mixing and comprises a main mixing mechanism, the main mixing mechanism comprises a hollow main shaft rotatably assembled in a mixing box, the hollow main shaft is detachably connected with a plurality of hollow mixing arms, and the hollow main shaft is provided with threading holes corresponding to the hollow mixing arms; by arranging the main stirring mechanism and the auxiliary stirring mechanism, the stirring blades can actively rotate, so that the stirring blades can rotate for multiple circles when the main stirring mechanism rotates for one circle, and mixed materials can be stirred and mixed for multiple times. The stirring device is simple in structure and convenient to operate, so that the mixing and stirring times required by uniform mixing of materials are realized in a shorter time, the mixing and stirring efficiency is improved, the stirring time is greatly shortened, and the stirring efficiency of the stirrer is greatly improved.

The protection mechanism for the forklift comprises a front sealing plate, a middle sealing plate and a rear sealing plate, and the two ends of the middle sealing plate are connected with the front sealing plate and the rear sealing plate respectively. The forklift truck is novel in structure, the hollowed-out bottom of the forklift truck can be installed in a closed mode through mutual cooperation of the front sealing plate, the middle sealing plate and the rear sealing plate, and on one hand, the interior of a cabin is protected; on one hand, noise in the cabin is isolated.

A non-isolated topology soft start circuit comprises an input end HV and an output end, specifically comprising a soft start circuit, wherein the soft start circuit comprises a diode D3 connected to the input end HV at one end, the other end of the diode D3 is connected to one end of a resistor R12, the other end of the resistor R12 is grounded through a capacitor C7, the other end of the resistor R12 is connected to one end of a resistor R15, the other end of the resistor R15 is grounded through a resistor R20 and a capacitor C11 respectively, the other end of the resistor R15 is connected to one end of a voltage regulator tube Z1, the other end of the voltage regulator tube Z1 is grounded through a resistor R21 and a capacitor C9 respectively, the other end of the voltage regulator tube Z1 is also connected to a reference end of a voltage regulator tube U2 through a resistor R18, a first conduction end of the voltage regulator tube U2 receives a voltage through a resistor R14, a second conduction end of the voltage regulator tube U2 is grounded, wherein the first conduction end is also connected to the base of a transistor Q2 through resistors R16 and R17 in sequence, the emitter of the transistor Q2 is grounded, and the collector is connected to an ADMI signal through a resistor R13.

The present invention relates to the technical field of differential double-rack transmission, and specifically to a synchronous control structure of differential double-rack transmission, comprising a first servo motor and a left transmission rod and a right transmission rod; the left transmission rod and the right transmission rod are distributed in a straight line; the output end of the first servo motor is provided with a rotating shaft; one end of the outer wall of the rotating shaft is fixedly connected with a first bevel gear; the outer side wall of the left transmission rod is provided with a planetary gear plate, and the planetary gear plate and the first bevel gear are meshed with each other; the present invention drives the first rotating shaft and the third bevel gear to rotate through a pair of second servo motors, so that the rotation of the third bevel gear drives the slide plate to move downward until it is clamped in a clamping groove on a pair of rack bodies, so that when the connecting plate rotates, the pair of slide plates drives the pair of rack bodies to rotate, reducing the pressure of the second bevel gear, reducing its wear, and increasing its service life, while also reducing the probability of failure due to severe wear of the second bevel gear.

The invention relates to a new energy automobile IGBT driving circuit and a battery pack heating device, and relates to the technical field of vehicle-mounted power supply control, the new energy automobile IGBT driving circuit comprises a power supply unit, an under-voltage protection unit and an IGBT driving unit, the power supply unit is connected with a battery pack of a new energy automobile, the under-voltage protection unit is connected with the power supply unit, and the IGBT driving unit is connected with the under-voltage protection unit. The IGBT driving unit comprises a photoelectric coupling module, a totem pole driving module and an IGBT output module, the photoelectric coupling module is connected with an external driving control signal source and the under-voltage protection unit, the totem pole driving module is connected with the photoelectric coupling module and the power supply unit, and the IGBT output module is connected with the totem pole driving module and the load element. And the load element is connected with the battery pack, so that the stability of the IGBT driving circuit and the reliability of an under-voltage protection function can be improved. The new energy automobile battery pack heating device provided by the invention uses the new energy automobile IGBT driving circuit provided by the invention.

The application provides a digital management and control platform and method for service areas, belonging to the technical field of data management, specifically comprising: dividing the charging piles into different combinations by using the models of the charging piles, determining the reliable combinations in the combinations based on the distribution data of the charging piles in the reliable service areas, determining the analysis and processing strategy of the operation data of the charging piles in the service areas based on the distribution data of the charging piles in the reliable combinations in the service areas and the distribution data of the charging piles in the reliable service areas in the same combination, determining the suspected abnormal data of the charging piles in the combinations in the different service areas based on the analysis and processing strategy, and determining the intelligent management and control method of the charging piles based on the suspected abnormal data and the reliable service areas in the service areas, thereby improving the reliability of the operation and maintenance processing of the charging piles.

The invention relates to the technical field of lifting devices for overhaul, and discloses a lifting device for large equipment overhaul, which comprises a moving vehicle, a lifting frame arranged on the moving vehicle, a lifting plate arranged on the lifting frame, a locking part arranged on the lifting plate, an adjusting plate arranged on the lifting plate, and a cleaning part arranged on the adjusting plate, a limiting component arranged on an adjusting plate is in contact with the hood through a contact plate, so that a moving rod drives two limiting plates to limit the two sides of the hood, and when the hood is separated from large equipment and lifted by a crane, the hood cannot be affected by wind power and cannot shake or deflect due to the unstable center of the hood; therefore, damage to the large equipment and the hood due to the fact that the hoisted hood collides with the large equipment during rotation is avoided, the stability of the hood is improved, the installation difficulty during reinstallation of the hood and the large equipment is reduced, and the operation efficiency of maintainers is improved.

The utility model discloses a kind of mould with lamp hole waterproof installation component, comprising: upper die group, lower die group, workpiece placed in the middle part of the lower die group, the workpiece side is provided with several lamp holes, the lower die group upper side is vertically provided with positioning baffle, the upper die group below is provided with vertical positioning assembly, lateral glue injection assembly;The workpiece is placed on the lower die group upper side, and the lamp hole outer side is attached to the positioning baffle, the utility model is forced workpiece lamp hole outer side rigid attachment by the positioning baffle vertically arranged in lower die group, eliminate the misplacement error caused by artificial placement, ensure that lamp hole and glue injection path are absolutely aligned;Through the synergistic effect of positioning baffle and lateral glue injection, ensure that sealing sheet and lamp hole side wall are combined with zero gap, waterproof grade is stably reached IP68;Process one-step forming, traditional secondary glue supplement link is saved, failure rate is reduced from original 15% or more to 5% or less, good product rate is improved to 98% or more, while shortening cycle 30%.

The invention discloses an onboard electric hydraulic braking system and method. The normal electric brake driver is connected with a piston A of the hydraulic brake driver, the piston A divides the hydraulic brake driver into an air cavity A and a hydraulic oil cavity A, the hydraulic oil cavity A is connected with the differential brake actuator, and the differential brake actuator is connected with the left brake actuator and the right brake actuator. Pistons F and pistons G of the left brake actuator and the right brake actuator are correspondingly connected with the movable brake pads A and B; the left brake actuator is divided into a hydraulic oil cavity E and an air cavity E through a piston F, and the right brake actuator is divided into a hydraulic oil cavity F and an air cavity F through a piston G; the interior of the differential brake actuator is divided into a left cavity and a right cavity through a piston D; the left cavity is divided into an air cavity C and a hydraulic oil cavity C through a piston C, and the right cavity is divided into an air cavity D and a hydraulic oil cavity D through a piston E; the air cavity C and the air cavity D are close to a piston D, and the piston D is driven by a differential brake electric actuator; the hydraulic oil cavity A is respectively communicated with the hydraulic oil cavities C and D; and the hydraulic oil cavities C and D are respectively communicated with the hydraulic oil cavities E and F. The device has the characteristics of simple structure, high reliability and high safety.