241results about How to "Save power" patented technology

The invention belongs to the technical field of energy storage power stations, and particularly relates to an energy storage power station electric quantity optimization method based on graph calculation, which comprises the following steps: S1, predicting future power generation capacity and load demand of an energy storage power station based on graph calculation: acquiring historical power generation data and load data of a distributed power station in a grid-connected area of the energy storage power station, and external influence data, constructing a time-space diagram neural network model, and obtaining prediction results of the power generation data and the load data in each hour period of the next 24 hours; s2, calculating the power and load value of each node in the power grid through power flow analysis; and according to the predicted future power generation capacity and the load demand, the electric quantity needing to be provided or consumed by the energy storage power station is calculated. Optimization of energy of the power storage station is achieved, and the cost of the power storage station is reduced.

The invention provides a multifunctional cycle power generation system and method by a gravity lever. The system comprises a supporting rack and a balance weight arranged on the supporting rack and slidably matched with the supporting rack, wherein engines are arranged on one side or two sides of the balance weight; the input shaft of each engine is connected to a transmission shaft; two or more single-directional clutches are fixedly connected to the middle of the transmission shaft; the locking directions of the single-directional clutches are same, gears are fixed to the peripheries of thesingle-directional clutches, and a rack matched with each gear to drive the transmission shaft to rotate is arranged next to each single-directional clutch; at least one pair of racks is arranged on the upper part and the lower part, separately, the racks and the balance weight which reciprocates are in driving movement and the balance weight is arranged on the supporting rack to swing through a lifting mechanism in a reciprocating manner. As the balance weight which swings in the reciprocating manner pulls the racks to drive the transmission shaft to rotate in the single direction, multiple engines can be driven synchronously to generate electricity synchronously, and the power needed by a supporting rack lifting device is alleviated greatly by means of a swing mode like to a lever, so that the energy sources are saved and the power generation efficiency is improved greatly.

The invention relates to a Bluetooth-based tire pressure sensor positioning method. The tire pressure sensor positioning method comprises the steps that S1, Bluetooth connection is established between a vehicle ECU and a tire pressure sensor, and clock synchronization is established on the vehicle ECU and the tire pressure sensor; s2, the tire pressure sensor periodically sends a positioning data packet to the vehicle ECU, the positioning data packet at least comprises backspacing time, and the backspacing time is used for representing the moment when the tire pressure sensor reaches the reference point; s3, the vehicle ECU calculates the corresponding moment when the vehicle ECU side reaches the reference point based on the backspacing time; s4, the vehicle ECU carries out deviation degree statistics on the obtained ABS information based on the corresponding moment, and a tire pressure sensor is positioned according to a statistical result; and S5, if the vehicle ECU positions the tire pressure sensor, the vehicle ECU instructs the tire pressure sensor to stop sending the positioning data packet. The tire pressure sensor can be effectively positioned, and the service life of the tire pressure sensor can be prolonged.

The utility model discloses a blocking mechanism and a sample placing rack blocking system, in the process of moving from a feeding end to a discharging end through a sliding space, a sample placing rack passes through a pushing position and is blocked by a blocking block to stop at a blocking position, and after the sample placing rack stops at the blocking position, the sample placing rack is blocked by the blocking block to stop at the discharging end. The driving assembly can drive the pushing block to move to the blocking position in the direction from the pushing position to the blocking position, meanwhile, the driving assembly can drive the blocking block to rotate to the opening position from the blocking position, and after pushing of the sample containing frame is completed, the pushing block is driven by the driving assembly to return to the pushing position from the blocking position; the pushing block rotates to the avoiding position at the pushing position, meanwhile, the driving assembly drives the stopping block to rotate to the stopping position from the opening position, and at the stopping position, on the basis that linkage of the pushing block and the stopping block is achieved, overshoot of the sample containing frame is prevented, the system risk is reduced, the continuous operation function is achieved, and the return efficiency of the whole stopping mechanism is also improved; the power is saved, and the integration degree is improved.

The invention relates to an audio and video resource processing method and device, a terminal and a storage medium, and relates to the technical field of terminals. The method includes: determining that an application is background; and in response to the situation that the application program is located in the background and any one of the following states exists, releasing audio and video resources occupied by the application program: the application program is in an abnormal decoding state, the application program is in a silent video playing state, and the application program is in a silent audio keep-alive state. By using the audio and video resource processing method provided by the invention, the audio and video resources occupied by the background application program can be released, and the power consumption of the terminal is saved.

The utility model discloses an ultra-thin parking spot lock which comprises a driving mechanism, a parking spot lock body and a parking spot lock body. The turning plate can rotate, and the turning plate and the guide plate are arranged side by side in the width direction of the turning plate; wherein a cavity is formed in the turning plate and / or the guide plate, a power module is assembled in the cavity, and the power module is electrically connected with the driving mechanism; the turning plate is provided with a driving axis and a rotating axis which are parallel, the length of the turning plate extends along the rotating axis, the width value of the turning plate is set as a, the distance between the driving axis and the rotating axis is not larger than a / 2, and the driving mechanism drives the turning plate to rotate around the rotating axis at the driving axis. According to the ultrathin parking spot lock, the cavity is formed in the turning plate or the guide plate, the power module is assembled, and the size of a machine box is reduced. The driving mechanism drives the turning plate to rotate at the driving axis, the needed power is small, the displacement of a driving part is small, the size of the driving mechanism is reduced, and the ultrathin design is achieved.

The invention discloses a photovoltaic power supply system of a vehicle, a control method and equipment of the photovoltaic power supply system and a computer readable storage medium. The photovoltaic power supply system comprises a photovoltaic panel, a photovoltaic controller, a bidirectional direct-current converter and a power battery heating device. Photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is used for supplying power to a load through photovoltaic power generation, charging a storage battery of the vehicle and connecting the photovoltaic power generation to a whole vehicle high-voltage network of the vehicle after boosting the photovoltaic power generation through the bidirectional direct-current converter, and the load comprises a power battery heating device; the power battery heating device is used for heating a power battery of the vehicle. According to the efficient photovoltaic power supply system for the vehicle and the control scheme of the efficient photovoltaic power supply system, the photovoltaic power generation amount is fully utilized, and the utilization rate of photovoltaic power generation is increased.

The present invention discloses an intelligent manhole cover, which includes a manhole body, one end of which is a manhole opening; a cover plate, which is arranged on the manhole opening of the manhole body; a first driving mechanism, which includes a driving member, a first sleeve column and a second sleeve column, which can be relatively movable in a vertical direction, the upper end of the first sleeve column is connected to the cover plate, and the lower end of the second sleeve column is connected to the manhole body; the driving member includes a first magnetic member and a second magnetic member arranged to be relatively attracted, an elastic component compressed and connected between the first sleeve column and the second sleeve column, and an electromagnetic component for generating a magnetic force when power is turned on to release the magnetic attraction state of the first magnetic member and the second magnetic member; when the magnetic attraction state of the first magnetic member and the second magnetic member is released, the elastic component drives the second sleeve column to rise in a vertical direction so that the cover plate opens the manhole opening. The technical solution of the present invention can realize the automatic opening of the manhole cover, and has the effects of energy saving and safety.

The invention discloses a power battery state monitoring method and related equipment, and relates to the field of power batteries, the method comprises the following steps: if it is detected that a target vehicle enters a dormant state, carrying out at least one battery state monitoring operation on the target vehicle; wherein the battery state monitoring operation comprises the steps that the dormancy duration of a battery management system of the target vehicle is obtained, and the battery management system is awakened under the condition that the dormancy duration is longer than the awakening period corresponding to the current battery state monitoring operation; and obtaining the charge state of each battery cell of the power battery through the battery management system.

The invention discloses a robot pile alignment method, device and equipment, a storage medium and a pile alignment system, and relates to the technical field of robots. According to the technical scheme, when it is determined that a receiver of the robot is located in a light band area of a workstation, the robot is controlled to move by a preset distance based on a reference direction, the reference direction is the direction of a connecting line between the rotation center of the robot and the receiver, and the preset distance is determined based on the distance between the rotation center and the receiver; controlling the robot to rotate so that the receiver returns to the light band area again; and controlling the robot to move to the workstation based on a target direction, wherein the target direction is determined based on the reference direction. By means of the technical means, the problem that in the prior art, time consumed in the process that the robot returns to the work station is long is solved, and the pile alignment efficiency of the robot is improved.

The invention discloses a method for reminding children left in a vehicle, which comprises the following steps of: 1, initializing a system and acquiring authority: when the vehicle is ignited, firstly initializing the system, including binding related services, finishing handshake and instantiating an interface, then acquiring the authority of a vehicle cabin observation camera, and when the authority is OFF, performing basic monitoring through a safety belt and seat weight state; and if the authority is ON, preparing to use a camera to acquire an image for analysis. According to the invention, through system initialization and permission acquisition during vehicle ignition, a basic monitoring or image analysis mode can be intelligently selected to monitor the condition in the vehicle according to the permission state of a cabin observation camera, when the permission of the camera is started, the AI algorithm and the camera image are utilized to monitor the occupying personnel in the vehicle, and the safety of the occupying personnel in the vehicle is improved. Adults, children and child seats can be accurately identified, and secondary correction is carried out in combination with vehicle information and user actions, so that child leaving detection is effectively carried out.

The utility model discloses an electric elastic binding band structure which comprises a shell and a binding band, the band tail of the binding band is fixedly connected with the shell, the band head of the binding band penetrates through the shell, a motor assembly, a gear and a clutch assembly are arranged in the shell, the output end of the motor assembly is in transmission connection with the gear through the clutch assembly, and the binding band is provided with a rack used for being meshed with the gear. When the motor assembly is started, the rack is driven to tighten the bandage. When the bandage is pulled by external force, the clutch assembly is used for reducing damage of the external force to the motor assembly.

The utility model discloses a measuring device. The measuring device comprises a base used for being installed on a measuring platform; the near end of the joint arm is connected to the base, and the far end of the joint arm is provided with a measuring device for the measuring device to move in the space so as to align to a point to be measured for measurement; the main control device is arranged on the base and comprises a power supply management unit which is provided with a battery and is powered by the battery when no external power supply exists, and a main processing unit which is electrically connected to the power supply management unit and is dormant when no external power supply exists; and the detection unit is electrically connected with the power supply management unit and the main processing unit so as to awaken the main processing unit to record an acceleration event when the acceleration event is detected. According to the measuring equipment disclosed by the invention, low-power-consumption work under the condition of no external power supply access such as transportation or carrying can be realized, acceleration events can be recorded, and the impact condition in the transportation or carrying process can be traced while energy consumption is saved.

The technical scheme belongs to the technical field of wood splitting devices, and particularly relates to a wood splitting machine which comprises a rack, a baffle, a wood splitting axe, a two-way rapid oil cylinder and a power unit. The two-way quick oil cylinder and the baffle plate are arranged on the rack; the wood breaking axe is installed at the driving end of the two-way rapid oil cylinder, the wood breaking axe is S-shaped, wood can be split more easily, and a working space used for containing the wood is formed among the rack, the baffle and the wood breaking axe; the power unit is integrated on the rack to provide oil pressure for the two-way rapid oil cylinder; the hydraulic control switch valve and the control valve are stacked and integrated into a whole through the two-way rapid oil cylinder. The main beam is arranged on the machine frame, the tail end of the main beam is bent and upwarped, the tail plate is embedded and welded to the tail end of the main beam, the reinforcing plates are arranged on the two sides of the tail plate, the main beam is formed by cutting an integral sectional material, and compared with a traditional main beam formed by welding three plates, machining procedures of the main beam are reduced; and the bent guide plate is additionally arranged between the baffle and the sliding rail on the main beam, so that the strength of the baffle is improved while residual wood grid chippings are conveniently cleaned.

The invention relates to the technical field of highway inspection, and provides a non-floor type intelligent inspection robot for highway maintenance data acquisition, which comprises a partition plate, a main body, a main moving mechanism, two batteries, two auxiliary moving mechanisms, a solar energy mechanism and an inspection camera mechanism, the two batteries are fixedly connected to the two ends of the main body respectively, the main moving mechanism is installed in the middle of the main body, the two auxiliary moving mechanisms are installed at the two ends of the main body respectively, and through arrangement of the main moving mechanism, the auxiliary moving mechanisms and other structures, the main moving mechanism and the auxiliary moving mechanisms work cooperatively, so that the main moving mechanism and the auxiliary moving mechanisms can move to the main body. According to the technical scheme, the stability and accuracy of equipment movement are guaranteed, meanwhile, the inspection camera mechanism can collect image data of the expressway in real time, powerful support is provided for follow-up maintenance and management, and through the technical scheme, the problems that in the prior art, the inspection difficulty is large, and the endurance is insufficient are solved.

The embodiment of the present application provides a wireless communication method and device for unlicensed spectrum, which can realize the monitoring of PDCCH on unlicensed spectrum. The method includes: a terminal device monitors a target downlink signal; when the target downlink signal is monitored at a first moment, the terminal device monitors the physical downlink control channel PDCCH from a second moment, and the second moment is later than the first moment.

The utility model discloses a kind of intelligent lower limbs reciprocating type strength training equipment, including training frame, the top of training frame is fixedly connected with cushion, the side of cushion is fixedly connected with movable frame, the side of movable frame is installed with backrest, the top of training frame is away from the side of cushion and is equipped with mounting groove, the top of training frame is movably connected with sliding frame by mounting groove, the front of training board is equipped with sliding slot, the front and back of sliding frame are fixedly connected with displacement sensor, the inner wall of mounting groove is equipped with moving groove, the inner side of mounting groove is fixedly connected with tension sensor, the side of tension sensor is fixedly connected with telescopic link, one end of telescopic link is fixedly connected with tension spring. Through the tension sensor, telescopic link and displacement sensor set, improve training effect, so that lower limbs reciprocating type strength training equipment can be intelligently adjusted according to the power change of trainer, avoid the damage caused to trainer in training process.

The present application relates to the technical field of power distribution control, and particularly relates to a power intelligent dynamic distribution method for a skid steer loader based on multi-working condition identification. The method comprises the following steps: performing skid steer loader multi-modal operation characteristic analysis on power states of skid steer loader multi-source operation data to generate skid steer loader multi-modal operation characteristic data; performing skid steer loader working condition characteristic analysis on the skid steer loader multi-modal operation characteristic data to generate skid steer loader working condition characteristic data; performing power demand characteristic analysis on working condition dynamic change trends based on skid steer loader real-time operation data and the skid steer loader working condition characteristic data to generate working condition dynamic change trend power demand characteristic data; and performing skid steer loader power distribution and dynamic optimization processing based on the working condition dynamic change trend power demand characteristic data to generate skid steer loader power distribution dynamic optimization data. The present application realizes efficient and energy-saving intelligent distribution of power under multi-working conditions of a skid steer loader.

The invention discloses a V-process casting method for a high-manganese steel assembled frog. The V-process casting method comprises the following steps: S1, design preparation work; s2, lower mold box modeling: arranging a direct external chilling block combination on the thin film at the corresponding position of the wood mold, then placing a lower mold box, filling dry sand in the lower mold box, slightly vibrating, striking off molding sand on the upper surface, covering a back film, and vacuumizing; s3, upper mold box modeling: open risers, blind risers and riser patching blocks are respectively arranged and mounted at the mounting positions of all the ports, a direct external chilling block combination is arranged and placed, an upper sprue brick pipe is erected on a sprue brick seat without a thin film, a tape is wound at the butt joint of the sprue brick pipe and the sprue brick seat, then an upper mold box is placed, the upper mold box is filled with dry sand, and after micro-vibration, the upper mold box is formed; the molding sand on the upper surface is scraped to be flat, a back film is covered, vacuumizing treatment is conducted, and then a pouring cup is installed; s4, closing the mold and pouring; and S5, opening the box. According to the method, most trace gas generated in the molding and pouring process is pumped away and collected by the vacuum pump, air pollution is small, and a great contribution is made to the target of green low-carbon production.

The invention discloses an injection molding device for processing automobile parts, which belongs to the technical field of injection molding equipment, and comprises a bottom mold and a top mold which cooperates with the bottom mold to form a cavity, a support is installed on the top mold, a mounting groove which cooperates with the top mold is provided on the support, a cavity is provided in the support, an injection molding tube is provided in the cavity, a first end of the injection molding tube is fixedly connected with a discharge pipe of an injection molding machine, a second end of the injection molding tube is closed, a plurality of blanking ports are arranged side by side along the extending direction of the injection molding tube, a plurality of T-shaped pipe sleeves corresponding to the blanking ports are slidably installed on the injection molding tube, a horizontal section of the T-shaped pipe sleeve is sleeved on the injection molding tube, a bottom end of a vertical section of the T-shaped pipe sleeve is fitted with a bottom wall of the cavity, a sliding T-shaped pipe sleeve can open or close the blanking port, a plurality of through holes corresponding to the blanking ports are provided on the bottom wall of the support, and a plurality of discharge ports corresponding to the through holes are provided on the top mold. The invention can avoid the formation of a jet to cause turbulence on the inner wall of the mold, thereby ensuring the molding quality.

The invention discloses a mechanical arm based on a lightweight multifunctional electric telescopic arm, and belongs to the technical field of robots, the mechanical arm comprises a plurality of precision steering engines and connecting seats, the connecting seats are rotatably mounted on the precision steering engines, and rotating shafts of the connecting seats are perpendicular to rotating shafts of the precision steering engines; the mechanical arm comprises an outer arm and a rack linearly and slidably mounted in the outer arm, the rack is meshed with a gear assembly in the outer arm, and the gear assembly is in transmission connection with the first steering engine; the end, extending out of the outer arm, of the rack is further connected with a base, the base is meshed with a pair of transmission gears driven by a second steering engine, a transmission arm is fixed to one side of the two transmission gears, a clamping arm is hinged to the end of the transmission arm, one end of a connecting rod is further hinged between the two ends of the clamping arm, and the other end of the connecting rod is hinged to the base. When the two transmission gears synchronously and reversely rotate, the clamping ends of the two clamping arms get close to each other or get away from each other. The mechanism is compact in structure, sensitive and changeable in motion control, and capable of well improving the working efficiency.

The utility model provides a mobile phone shell repairing device which comprises a bottom plate and a mobile phone shell tray arranged on the bottom plate, and further comprises at least two clamping parts oppositely arranged on the side edges of a mobile phone shell and used for clamping and positioning the mobile phone shell. The sliding part comprises a moving frame which is arranged on the clamping part and slides relative to the clamping part, one end of a C-shaped support is connected to the moving frame in a sliding mode, a sliding block is arranged on the inner side of the C-shaped support in an up-down sliding mode, a supporting frame is arranged on the outer side of the sliding block, and a positioning hole used for containing a polishing gun is formed in the bottom of the supporting frame; and the extrusion spring is arranged between the bottom of the supporting frame and the lower part of the C-shaped bracket. The grinding precision and the clamping stability can be improved.

The present disclosure relates to the technical field of metallurgy, and particularly relates to a coal injection gun adjustable conversion joint device, a coal injection gun and a coal injection device. The present disclosure provides a coal injection gun adjustable conversion joint device, which comprises a conversion joint body and an angle adjusting mechanism. The conversion joint body has a first connecting end and a second connecting end. The first connecting end is used for connecting a coal injection gun section door of a coal injection gun. The second connecting end is used for connecting a barrel of the coal injection gun. The angle adjusting mechanism comprises an adjusting sleeve and a plurality of force applying columns. The plurality of force applying columns are arranged at intervals along the circumference of the conversion joint body. The adjusting sleeve is detachably connected to one or more of the plurality of force applying columns, and the adjusting sleeve is used for increasing the torsion of the force applying columns. By implementing the technical solution of the present disclosure, burrs, scratches and folds of the barrel during angle adjustment are avoided, which is beneficial to the sealing and advancing and retreating operation of the coal injection gun.

The invention relates to an energy storage and saving device and method for a construction hoist, an intelligent terminal and a storage medium, and relates to the field of construction equipment. The device comprises a supporting frame, a driving mechanism, a lifting box body, energy conversion equipment and energy storage equipment; the energy storage device comprises a bidirectional DC / DC controller and an energy storage medium. The driving mechanism is installed on the supporting frame and used for driving the lifting box body to ascend and descend, and the supporting frame is used for providing a lifting path of the lifting box body; the energy conversion equipment is used for converting potential energy of the lifting box body into electric energy in the descending process of the lifting box body; the bidirectional DC / DC controller is used for controlling the charging and discharging states of the energy storage medium; the energy storage medium in the charging state is used for storing electric energy generated by the energy conversion equipment in the charging state; the energy storage medium in the discharging state is used for providing electric energy for the driving mechanism in the lifting process of the lifting box body. The construction hoist has the effects of reducing the energy consumption of the construction hoist and saving the power consumption cost.

The present invention provides an impact tool. The hammer drill (1) is constructed to include: a cylindrical top tool holding component (10) that holds a top tool (T); a piston (16) that moves forward and backward with the rotation of a motor (4); an impact piece (18) that moves forward and backward in conjunction with the piston; an intermediate piece (20) that is housed between the impact piece and the top tool in a manner that allows it to move forward and backward in the top tool holding component, and that abuts against the rear end of the top tool during normal impact to indirectly transmit the impact from the impact piece to the top tool, and two metal front rings (42) and rear rings (43) are housed on the front side of the intermediate piece in the top tool holding component and between the top tool holding component and the intermediate piece so as to be movable in the forward and backward directions. According to the present invention, even a tool that restricts the movement of the intermediate piece toward the impact piece can exert a stable anti-air strike function.

The invention discloses an unmanned aerial vehicle anti-lost device, and belongs to the technical field of unmanned aerial vehicle accessories. The anti-loss device comprises an attached machine and a searching machine, the attached machine comprises a first casing, a first switch, a sound alarm, a light alarm, a first controller, a first power supply, a first GPS receiver, a first communication module, a gyroscope and an acceleration sensor, the first switch, the sound alarm and the light alarm are mounted on the first casing, and the first controller, the first power supply, the first GPS receiver, the first communication module, the gyroscope and the acceleration sensor are mounted in the first casing. The searching machine comprises a second machine shell, a second switch, a direction displayer, a distance displayer, a second controller, a second power source, a second GPS receiver and a second communication module, wherein the second switch, the direction displayer and the distance displayer are installed on the second machine shell. The attached machine and the searching machine which are matched with each other are designed, so that the position of the unmanned aerial vehicle can be marked in a field environment, and searching personnel can be assisted to more accurately grasp the position of holding the unmanned aerial vehicle so as to quickly carry out searching work of the unmanned aerial vehicle.

The invention relates to the field of building outer wall repairing, in particular to infrared detection and repairing equipment for leakage and hollowing of a building outer wall. Infrared detection and repair equipment for leakage and hollowing of a building outer wall comprises an unmanned aerial vehicle, an infrared detection device is installed on a cradle head of the unmanned aerial vehicle, the infrared detection device is provided with a camera, a plurality of fixing pipes are arranged on a rack of the unmanned aerial vehicle, and a plurality of adsorption mechanisms are jointly installed on all the fixing pipes; the fine adjustment mechanism is mounted on the rack; the repairing mechanism is mounted on the fine adjustment mechanism; and the conveying mechanism is mounted on the rack. The space between the suction cups and the tile wall surface is vacuumized through the fixing pipes and the mounting pipes, the multiple suction cups are adsorbed and fixed to the tile wall surface, meanwhile, the air pressure is monitored through the air pressure sensor, the suction and fixing effect of the suction cups is ensured, the unmanned aerial vehicle can stop working, and on one hand, the electric quantity of the unmanned aerial vehicle can be saved; on the other hand, the whole equipment is fixed on the wall surface to work, the paving accuracy is guaranteed, meanwhile, the safety problem caused by accidental collision of the unmanned aerial vehicle on the wall surface due to uncontrollable factors in hovering work is avoided, and manual maintenance is not needed after detection.

The present specification discloses a diffuser for indoor ventilation to which a cover attachment / detachment structure using a magnet is applied. A diffuser for indoor ventilation according to one embodiment of the present invention comprises a diffuser body (100) provided with a body-side magnet (150), and a diffuser cover (200) provided with a cover-side magnet (250), the body-side magnet (150) and the cover-side magnet (250) being made in the same form and arranged along a diffuser central axis (X), and the cover-side magnet (250) being made in the same form as the body-side magnet (150) and the cover-side magnet (250). The body-side magnet (150) and the cover-side magnet (250) provide a bonding force that promotes bonding of the diffuser body (100) and the diffuser cover (200).

The utility model relates to laser cutting technical field especially, it relates to a kind of auxiliary support device for laser pipe cutting machine.Aiming at the technical problem that the overhanging part will bend downward due to its own gravity in the process of laser pipe cutting machine cutting pipe, affect the processing accuracy.A kind of auxiliary support device for laser pipe cutting machine, including base;Two guide rails are installed on base;Two guide rails are slidably connected with support frame;Rotary support bearing is installed in support frame;Profile clamping tool is installed on the inner ring of rotary support bearing.The utility model realizes a multifunctional auxiliary support unit of automatic centering clamping, rotary follow-up support and axial sliding support by integrating profile clamping tool on the inner ring of rotary support bearing, effectively avoids the error and inefficiency of manual adjustment, and provides stable support for circumferential cutting, greatly inhibits the rotary vibration of pipe overhanging end, and prevents pipe droop simultaneously.