12results about How to "Reduce load requirements" patented technology

The utility model relates to the technical field of greenhouses, and provides a greenhouse environment mobile acquisition device which comprises an environment acquisition device. The track is arranged at the top of the greenhouse in the first direction, a plurality of collection point positions are arranged on the track at intervals, and each collection point position is provided with a position detection component; the transmission part is movably arranged on the track, is connected with the environment acquisition device and is used for driving the environment acquisition device to move on the track in the first direction and staying at each acquisition point position to complete environment information acquisition; the driving device is in transmission connection with the transmission part and used for driving the transmission part to move in the first direction; the controller is electrically connected with the driving device and used for controlling starting and stopping of the driving device; according to the utility model, greenhouse space utilization is optimized, dynamic coverage is realized with less equipment, data is closer to actual environment distribution, and greenhouses with different areas can be flexibly adapted.

The invention discloses a roof assembly part of a transformer substation and an assembly type roof, and relates to the technical field of roof construction. The roof assembly part comprises a bottom plate, an inner core structure, a first connecting structure, a second connecting structure and a panel; wherein a mounting position is formed on the bottom plate; the inner core structure comprises a waterproof layer and a heat preservation layer which are sequentially arranged from top to bottom, and the heat preservation layer is installed at the installation position; the first connecting structure and the second connecting structure are arranged at the two ends, in the transverse direction, of the inner core structure correspondingly, the first connecting structure and the second connecting structure are both installed at the installation position, the first connecting structure is used for being connected with the second connecting structure of another roof assembly part, and the second connecting structure is used for being connected with the first connecting structure of another roof assembly part; and the panel covers the tops of the waterproof layer, the first connecting structure and the second connecting structure. According to the roof assembly part, the construction efficiency of roof construction can be improved, and the construction period is shortened.

The invention relates to a large current generating device and current transformer verification equipment, and relates to the field of extra-high voltage power supply equipment, and the large current generating device comprises a three-phase rectification unit, an IGBT full-bridge conversion unit, an isolation conversion transformer, a rear-end capacitance compensation unit and a control feedback unit. The three-phase rectification unit can convert three-phase alternating current into direct current, the IGBT full-bridge conversion unit is connected with the three-phase rectification unit and can convert the direct current into single-phase alternating current, and the input end of the isolation conversion transformer is connected with the IGBT full-bridge conversion unit and can increase the current of the single-phase alternating current and output large-current alternating current. The rear-end capacitance compensation unit is connected to the output end of the isolation conversion transformer to improve the power factor of the large-current alternating current, and the control feedback unit is arranged between the output end of the isolation conversion transformer and the IGBT full-bridge conversion unit, so that the output current can be improved, and the weight and the cost of the device can be reduced.

This invention provides a SCARA robotic arm, characterized by comprising: a movable base, at least two articulated arms, and articulated motors disposed at each articulated arm; the movable base is sequentially connected to each articulated arm; each articulated motor is a planetary gear motor, and each articulated motor is rigidly directly connected to a follower structure via coaxial bearings; an end effector is mounted on the end articulated arm. This invention, by selecting an integrated articulated motor with a planetary reducer as the drive unit, enables the joint output to achieve high torque and sufficient speed without the need for external multi-stage reduction links, directly increasing the output capacity per unit volume on the drive side, thereby reducing the need for additional structural and transmission components to meet dynamic performance requirements. The rigid direct connection scheme between the articulated motor and the follower structure shortens the power transmission path, reduces backlash and flexibility introduced by components such as synchronous belts / linkage mechanisms, and lowers phase lag and energy loss.

The invention relates to the technical field of unmanned aerial vehicle power distribution, and particularly discloses a hybrid power unmanned aerial vehicle power distribution device and method, and the device comprises an energy management module which comprises an energy management computer, a pair of battery management units, and a pair of generator controllers; the pair of bus bars are used for collecting energy output by the pair of high-voltage battery packs and the pair of generators, the two bus bars are connected through a first contactor, and each bus bar is provided with a plurality of load interfaces; the load management module comprises a plurality of load management units, the input end of each load management unit is connected with one load interface, and the output port of each load management unit is connected with one load; and the communication module is respectively connected with the flight management computer and the electric load through a communication bus. The generator is used as a main power supply, the bus voltage is maintained through voltage stabilization control of the generator controller, and the high-voltage battery pack is used as a current following assembly, so that the stability of the bus voltage is ensured, and the quick response characteristic of the high-voltage battery pack can be reasonably utilized.

This invention provides a composite steel plate comprising a base layer and a cladding layer on top of the base layer. The composite steel plate has a thickness of 60-120 mm, the cladding layer is made of stainless steel, the base layer is made of carbon steel, and the bond strength between the base layer and the cladding layer is above 500 MPa. The composite steel plate of this invention exhibits excellent tensile properties, low-temperature impact resistance, and interlayer bonding performance. This invention also provides a method for preparing the above-mentioned composite steel plate.

The invention discloses a supporting rod type modular air building machine, and belongs to the technical field of building construction. The building machine mainly comprises a supporting system, a steel platform system, a hanging frame system and a power and control system, the supporting system adopts a steel pipe pre-buried in a building structure as a supporting rod, a cross-core jack cylinder body is fixed to the steel platform and sleeved with the supporting rod, and a jack climbs along the supporting rod to achieve overall lifting of the platform. The steel platform system is formed by assembling three kinds of steel truss standard units and cross-shaped connecting pieces through female head structures and male head structures and can be divided into a first connecting area, a second connecting area and a third connecting area according to positions and functions. The hanging frame system is formed by assembling a hanging rod, a walkway plate and a punching protective net, and component standardization and on-site dry type assembly are achieved. High standardization and on-site welding-free rapid assembly of components are achieved, the supporting structure is simple, stress is clear, safety and reliability are achieved, and the supporting structure has the advantages of being rapid to assemble and disassemble, high in adaptability, capable of being recycled and reused and low in comprehensive cost.

The chuck of the pipe cutting machine comprises a fixing frame of a frame structure, a first set of clamping assemblies and a second set of clamping assemblies, the fixing frame is of a disc structure and comprises a first installation disc, a second installation disc and at least two partition plates, the first installation disc is arranged on the front side of the second installation disc, and the second installation disc is arranged on the front side of the second installation disc. The partition plate is vertically fixed between the first mounting disc and the second mounting disc, the first mounting disc and the second mounting disc are coaxially mounted, the first clamping assembly clamps the left end and the right end of the pipe in the second through hole, and the second clamping assembly clamps the upper end face and the lower end face of the pipe in the second through hole; the pipe clamping position of the first clamping assembly and the pipe clamping position of the second clamping assembly are staggered front and back. According to the chuck of the pipe cutting machine, the structural layout is compact, driving of clamping and positioning of pipes is simplified through the modular design of the two sets of bidirectional driving air cylinders, installation is convenient, and meanwhile it can be guaranteed that troubleshooting and maintenance are more convenient and faster.

The utility model provides a small -size screw rod oil press, and technical key points include: tubular press hole and press bar that coaxially is arranged in press hole, press bar has the stress section that protrudes the press hole tail end in axial direction, stress section has the limiting part that is in abutment with press hole to limit press bar axial displacement and can axial adjustment limiting position, still movably clamps the thrust bearing that is used for reducing the frictional force of rotation between limiting part and press hole, the wall of press hole is close to tail end and has the slag hole of radial slagging. Only need to adjust the axial limiting position of limiting part, can adjust the clearance between press bar and press hole, not only can be applicable to different oil material, but also can make up the clearance that increases because of abrasion, prolongs the life. The axial stress between press bar and press hole is mutually offset during pressing and can reach dynamic balance, not only can save the structure for fixed press hole or press bar, but also the load requirement of motor is lower, has reduced the cost, and the dismounting and cleaning are very simple.

The invention discloses a multi-layer different-speed air cushion wall type air cushion rotor supporting device, which is characterized in that the side surface of an air cushion chamber of an air cushion device forms a multi-layer air cushion wall by a fixed air cushion wall and a rotating air cushion wall, the rotating air cushion wall forms different rotating speeds by a rotating speed control device, and contact type rotating sealing devices are arranged among the multi-layer air cushion wall; by controlling the rotating speed difference between the adjacent air cushion walls, the linear speed of the contact type rotary sealing device can be always in an allowable range, and the linear speed of the outer side of the hovering disc is finally achieved through multi-layer speed stacking, so that the contact type rotary sealing device is safely and efficiently used in the environment that the air cushion supports a high-speed rotor.

The utility model belongs to the technical field of coal mining equipment, concretely relates to the transition support car of roadway self -propelled auxiliary train, including seat body (1), still include: the fixed setting of connecting seat (3) in seat body (1) walking direction at least one end, and the telescopic stand (4) of connecting seat (3) connection. The utility model discloses the telescopic stand (4) of setting in transition support car both ends, can be in the low gravity center position of seat body (1) to transition support car and carry out traction, and the stability is strong, and through telescopic buffer traction force prevents the impact of transition support car gravity center and leads to instability.