18results about How to "Reduce weight and size" patented technology

The invention discloses a high-heat-dissipation integrated ducted fan electric propulsion system, which belongs to the technical field of ducted fans and comprises a motor controller, a motor, a motor front bearing, a motor rear bearing, a front fairing, a rear fairing and an integrated fan rotating shaft integrally formed by fan blades and a motor rotating shaft. The integrated nacelle motor shell is integrally formed by a motor shell, a ducted nacelle and a plurality of groups of ducted stationary blades; cooling devices are mounted on the motor shell and the motor controller; the cooling device comprises a cooling water channel and a water cooling cavity; a cooling water channel is arranged on the motor shell; the motor controller is provided with a water cooling cavity, and the cooling water channel is communicated with the water cooling cavity; the front fairing is connected to the left end of the integrated fan rotating shaft, and the rear fairing is connected to the right end of the motor controller. The integrated level is high, the size and the weight are reduced by reducing connecting parts, and the power density is high; the system reliability is high; the system cooling efficiency is high; and the power level compatibility and the expandability are high.

The invention discloses a parameter design method, device and system for a hybrid electromagnetic interference filter, and belongs to the technical field of power electronic control. The target passive device parameter corresponding to the minimum common mode inductance meeting the preset condition is found; the preset condition is that under the control of the target passive device parameter and the corresponding target active control parameter, the corresponding attenuation degree difference value of the hybrid electromagnetic interference filter in the concerned frequency band is smaller than a threshold value; and outputting the target passive device parameter and the corresponding target active control parameter. According to the invention, with the attention frequency band attenuation degree as a target, the attenuation degree of the HEF can approach to the difference between the actual interference and the standard limit value to the maximum extent, and unnecessary redundancy design is effectively avoided. The self-adaption process of the attenuation degree can fully develop the interference attenuation performance of the AEF, and the performance requirement for the PEF is reduced.

The utility model provides a restraint system for preventing upper limbs from being thrown under the action of airflow, which comprises an elbow guard, a lead, a central pull ring, an upper joint, a lower joint, a power supply, an ejection seat basin and a travel switch, and two ends of the elbow guard are electrically connected with the upper joint through the lead; the lower joint is fixedly connected with the ejection seat basin and is electrically connected with the power supply; one end of the central pull ring is a free end, the other end of the central pull ring is provided with a toggle travel switch structure, the upper connector is electrically connected with the lower connector, and when a pilot pulls the central pull ring, the travel switch is turned on and electrified, so that the artificial muscle wires arranged on the elbow guard contract under the action of current to generate tensioning force, and constraint is provided for the forearm and the upper arm of the pilot. The upper connector and the lower connector are plug-in type connectors, when the pilot separates the body from the chair, the upper connector and the lower connector are separated, the artificial muscle on the elbow guard loses the tensioning force, and the upper limbs of the pilot return to normal. The device is convenient to operate, and the influence of an active constraint mode on a pilot is reduced to the minimum.

The invention discloses a renewable fuel cell system with a water and gas management island. The renewable fuel cell system comprises a renewable fuel cell module and an external auxiliary module, the renewable fuel cell module comprises a high-efficiency drainage fuel cell, a water-gas management island and a high-efficiency exhaust water electrolytic cell which are sequentially connected in series and stacked; the external auxiliary module comprises a hydrogen / oxygen circulation part assembly, a water pump, a hydrogen / oxygen storage tank and a water storage tank. The renewable fuel cell system with the water and gas management island is high in integration level, reliable in operation, wide in power range, flexible in configuration, long in service life and suitable for miniature and medium-large renewable fuel cell energy systems.

The invention discloses an underground garage concrete leakage detection and repair method and method.The method comprises the steps that an infrared thermal imager is used for detecting weak points of leakage water at the junction of a side wall and a bottom plate of an underground garage, and an acoustic emission instrument is used for detecting and repairing the water leakage problem of the underground garage; the method further comprises the step of installing the waterproof layer anti-floating replacement device. An infrared thermal imaging technology and image processing equipment are used for displaying leakage weak points at the junction of the side wall and the bottom plate of the garage, positioning grouting is conducted, a water stop needle is buried in a low-temperature dark-color area and repaired by injecting anti-dispersion slurry, and a nitrogen injection machine is adopted for injection in the section with the unobvious temperature difference to expand the temperature difference, so that the effect is obvious; for the water leakage problem of the underground garage bottom plate, an electric drill is used for drilling holes, water flow is guided to a drainage well for pressure relief, an acoustic emission instrument is used for being matched with other parts to arrange measuring points, and seepage acoustic emission signal data are analyzed to determine the seepage range and path. And the waterproof layer anti-floating replacement device is matched with the anti-floating mortar fixed point, so that the leakage damage part of the bottom plate is repaired.

The utility model discloses a visual array imaging near-field pulsed eddy current scanning device, which is characterized in that a device body is divided into a front section and a rear section which are connected by a ladder pedestal, a connector of a front end plate is connected with a connecting rod, and a video recording device is arranged at the top end of the connecting rod; the joint of the rear end plate is connected with a traction protection sleeve; a signal cable of the video recording device is connected with the instrument host; an exciting coil connected with an exciting cable is arranged in the exciting coil placing groove, and a receiving coil connected with a receiving cable is arranged in the receiving coil placing groove; and the excitation cable and the receiving cable are connected with the instrument host through the traction protection sleeve. The device can quickly and continuously pass through the reaction tube, and mechanical damage to the inner wall of the reaction tube during detection is avoided. Meanwhile, an array pulse eddy current imaging technology is combined with a 360-degree visualization technology, so that the defects of conventional near-field pulse eddy current and far-field pulse eddy current probes are effectively overcome, and the defect detection sensitivity is greatly improved.

The application provides a lamp, which comprises a base plate, a main light source assembly arranged on the base plate, and a side frame extending upwards around the base plate, wherein one end of the side frame away from the base plate is a light outlet, and the light outlet is provided with a light-transmitting film, and the base plate, the side frame and the light-transmitting film form a light mixing cavity. The lamp uses the light-transmitting film to replace the traditional diffusion plate or transparent plate, and has the advantages of low material cost, low transportation cost and warehouse storage space, no need of professional cutting equipment, small density and light volume of the film material itself. Overall, the light-transmitting film is more convenient to use in the whole lamp assembly, and the structure is simpler, so that the weight and cost of the lamp can be greatly reduced. Especially for the large-volume lamp, the application effect is more obvious.

The invention discloses a capacitor and a method for measuring dielectric loss through forward and reverse connection simultaneously. The capacitor comprises a capacitor body arranged in a shell. Capacitor leading-out ends electrically connected with the capacitor are located at the two ends of the shell. The capacitor comprises a lower-end shielding layer and an upper-end shielding layer which are arranged at two ends of the supporting layer; a lower end electrode copper column and an upper end electrode copper column are respectively arranged in the lower end shielding layer and the upper end shielding layer; the lower end electrode copper column is electrically connected with the lower end capacitor electrode plate; the upper end electrode copper column is electrically connected with the upper end capacitor electrode plate; the lower end capacitor electrode plate wraps the upper end capacitor electrode plate; an electrode core is formed in the middle of the upper-end capacitor electrode plate; when a positive connection method is adopted to measure the dielectric loss of the end screen of the bushing, the low-voltage end of the capacitor collects a current signal. Test time is saved, test wiring times, test times and power-on and power-off times are reduced, and test safety is improved; the number of used capacitors is reduced, cost is reduced, efficiency is improved, the size and weight of carried detection equipment are reduced, and operation of testers is facilitated.

The displacement adjustment mechanism of the slitting and crimping machine disclosed in the present invention comprises a first guide shaft arranged on a frame parallel to the knife driving shaft and a plurality of slides movably sleeved on the first guide shaft, the slide is provided with a connecting plate to cooperate with the knife group, and the frame is provided with a moving mechanism for driving each slide to move separately; the present invention can switch the sliding / stop state of the slide by engaging the ejection pin mechanism on the slide with the driving wheel, so that a plurality of slides can slide in cooperation with a single screw rod separately, thereby reducing the production cost of the equipment, reducing the volume and weight of the equipment, and facilitating installation and use.

The utility model relates to the technical field of tire repair equipment, in particular to a vulcanizing machine tire repair adjusting device which comprises a control cabinet, a row of sockets are arranged at the lower position of the front face of the control cabinet, plugs are inserted into the sockets and fixedly connected with a connecting wire, a heating plate is installed at the other end of the connecting wire, and a balance weight box is fixedly connected to the top of the heating plate. Four bandages are movably connected to the top of the counterweight box in a penetrating mode, and inserting blocks are fixedly connected to the ends, away from the counterweight box, of two bandages. According to the tire repair adjusting device for the vulcanizing machine, the counterweight box is arranged at the top of the heating plate, and the binding band is wound in the counterweight box, so that during vulcanization repair, only the heating plate needs to cover a damaged part of a tire, then the binding band penetrates through the inner side and the outer side of the tire and is connected with the binding band, a special clamp is not needed, and vulcanization covering of the heating plate is realized; the volume and weight of the vulcanizing machine are reduced, the vulcanizing machine is convenient to move and use, the use cost is reduced, and the convenience of vulcanizing repair is improved.

The present invention belongs to the technical field of hydrogen production equipment, and specifically discloses a portable chemical hydrogen generator, including a casing, one side of which is recessed inward to form a receiving portion for placing a fuel tank; a protective cover is provided in the receiving portion, and the protective cover is movably connected to the casing, so that the protective cover can be hidden in the receiving portion and can be moved out of the receiving portion during hydrogen production to provide a placement space for the fuel tank; a hydrogen production component is provided in the casing, and the hydrogen production component includes a water inlet pipe and an air outlet pipe; two quick-plug female heads connected to the water inlet pipe and the air outlet pipe are provided in the protective cover, and a quick-plug male head is provided on the top cover of the fuel tank, and when the quick-plug female head is correspondingly inserted into the quick-plug male head on the fuel tank, the water inlet pipe and the air outlet pipe are connected to the fuel tank. The present invention has the advantages of small size, good stability, convenient carrying and transfer, simple fuel replacement, good hydrogen production effect, etc., and can meet the corresponding needs of field hydrogen equipment including fuel cells.

The utility model provides a double-motor driving system of a crusher and the crusher. The double-motor driving system comprises an oil tank, a first hydraulic pump, a first hydraulic motor, a second hydraulic motor and a reversing component, the first hydraulic motor and the second hydraulic motor are used for driving the crusher main shaft; the first hydraulic pump and the first hydraulic motor form a closed liquid loop; the first hydraulic pump is further connected with the reversing component, the reversing component is connected with the second hydraulic motor and the oil tank, and when the reversing component is located at the first reversing position, the first hydraulic pump only drives the first hydraulic motor; when the reversing component is located at the second reversing position, the first hydraulic pump drives the first hydraulic motor and the second hydraulic motor. The double-motor driving system is hydraulically driven, so that on-load starting, overload reverse rotation, pressure relief and constant power control can be realized while the requirements of the main shaft of the crusher on the rotating speed and the torque are met; the power device and the crusher are split and connected through a hydraulic pipeline, the size and weight of the crusher are reduced, and arrangement is more flexible.

The utility model discloses a square pressure ceramic capacitor core, include: square ceramic base, square ceramic diaphragm, its rim four -around through glass sealant with square ceramic base bottom sintering seal fixed, form sealed cavity, upper printing electrode and lower printing electrode are printed on the opposite surface of square ceramic diaphragm and square ceramic base respectively and are located in sealed cavity, form the two poles of electric capacity, constitute variable capacitance structure, pin, pass through the through -hole of square ceramic base, and are connected with lower printing electrode electricity through conductive silver glue, the square pressure ceramic capacitor core of the utility model compares as follows with existing circular ceramic capacitor core, under the premise of guaranteeing precision and stability, the volume weight is smaller, and the application field is wider, and the processing is simpler, and the loss is lower, and the weight and the volume are smaller, and the lightweight design is more superior, and the economic benefit is higher.

The present invention relates to the technical field of wheel-side drive, and discloses a wheel-side drive assembly and a vehicle. The wheel-side drive assembly includes an integrated motor unit and a speed change unit, the motor unit includes a first drive motor and a second drive motor that are integrated and arranged in the length direction of the vehicle, and the speed change unit includes a first speed change mechanism and a second speed change mechanism; the first speed change mechanism includes a first input mechanism and a first output mechanism that are respectively arranged on both sides of the motor unit in the width direction of the vehicle and connected by an intermediate transmission mechanism, and the intermediate transmission mechanism passes through the gap between the first drive motor and the second drive motor; one of the first drive motor and the second drive motor is connected to the first input shaft of the first speed change mechanism for power transmission, and the other is connected to the second input shaft of the second speed change mechanism for power transmission. The wheel-side drive assembly is integrated into one body, has a compact structure, high space utilization, small volume and weight, and low cost.

A lever device (70) includes a movable bracket (72) and a lever (73) which are supported on a support shaft (77) provided on a base (71) such that the movable bracket (72) and the lever (73) are pivotable between a lowered position (P1) and a raised position (P2), at least one first engagement portion (86) provided on the movable bracket (72), at least one second engagement portion (88) provided on the lever (73), a cam member (81) attached to the support shaft (77) such that the cam member (81) is movable in a direction of an axis of the support shaft (77) but not rotatable about the support shaft (77), and a biasing member (92) to bias the cam member (81) in a direction that allows the cam member (81) to engage with the at least one first engagement portion (86) and the at least one second engagement portion (88), wherein the at least one first engagement portion (86) is configured to, when the movable bracket (72) and the lever (73) are in the lowered position (P1) and when the movable bracket (72) and the lever (73) are in the raised position (P2), engage with the cam member (81) to restrict the movable bracket (72) from pivoting, and the at least one second engagement portion (88) is configured such that, when the lever (73) is caused to pivot upward from the lowered position (P1) or pivot downward from the raised position (P2), the at least one second engagement portion (88) disengages the cam member (81) from the at least one first engagement portion (86).

Disclosed is a battery submodule. A battery submodule according to one aspect of the present disclosure may include a plurality of battery cells each having at least one electrode lead protruding toward the front and stacked in the left-right direction; an upper case including a front plate that covers the front side of the plurality of battery cells and a top plate that extends rearward from the front plate and covers the upper side of the plurality of battery cells; and a lower case coupled to the upper case and accommodating the plurality of battery cells together with the upper case.

The present invention relates to the technical field of wheel-side drive, and discloses a wheel-side drive assembly and a vehicle. The wheel-side drive assembly includes an integrated motor unit and a transmission unit, wherein the transmission unit is arranged on one side of the motor unit in the vehicle width direction, and the motor unit includes a first drive motor and a second drive motor that are integrated together and arranged in the vehicle length direction; the transmission unit includes a transmission housing, a first speed change mechanism and a second speed change mechanism, wherein the first speed change mechanism includes a first input shaft, a first intermediate shaft and a first input gear set, and the second speed change mechanism includes a second input shaft, a second intermediate shaft and a second input gear set, and the first input gear set is arranged between the second input gear set and the motor unit; the first output half shaft of the first speed change mechanism and the second output half shaft of the second speed change mechanism are arranged coaxially with the half shaft center axis A. The wheel-side drive assembly is integrated into one body, has a compact structure, high space utilization, small volume and weight, and low cost.