58results about How to "Quick fine-tuning" patented technology

A circular-polarization dipole helical antenna is used for electronic device and satellite terminal and includes a base, and an antenna conductor arranged on surface of the base. The antenna conductor includes a plurality of metal conductors with high Q value and anti-oxidation property and continuously and helically coated on surface of the base. The base is made of low loss and high dielectric constant material. An unbalance-to-balance circuit module connects two signal-feeding ends to the base with phase difference of 180 degree. The problems of narrow bandwidth, low efficiency, complicated structure and precise manufacture can be solved.

The invention discloses a self-adapting tool clamp for pipeline welding, and relates to the technical field of pipeline welding. The self-adapting tool clamp for the pipeline welding is high in clamping stability and high in adaptability. The self-adapting tool clamp for the pipeline welding comprises a base, supporting columns and mounting blocks, wherein the supporting columns are arranged at two ends of the base; the mounting blocks are arranged on the supporting columns, and a supporting space is formed between the mounting blocks; a propping column for positioning a pipeline is arranged in the supporting space; an oil cylinder is arranged on the base; the propping column is connected to a propping shaft of the oil cylinder through a guide mechanism; the pipeline to be welded can be clamped through a clamping device, so that the stability of the pipeline in welding is greatly improved, and the pipeline welding efficiency is effectively improved; a sliding inclination block is arranged, and thus the pipeline with different diameter can be clamped, and the applicable scope is wide. The self-adapting tool clamp for the pipeline welding is reasonable in structure, novel in design,simple to fix and operate, and stable to fix; the pipeline welding quality is effectively improved; and the self-adapting tool clamp for the pipeline welding is convenient to popularize and use.

The invention discloses a multi-functional tunnel operation trolley, which comprises a chassis, a host platform and double movable arms, wherein the host platform is arranged on the chassis and is connected with the double movable arms through hinges; the double movable arms are rigidly connected through two connecting bridges; two movable arm hydraulic oil cylinders which synchronously act are arranged between the host platform and the double movable arms; the two ends of the movable arm oil cylinders are hinged with the host platform and the double movable arms respectively; the end parts of the double movable arms are hinged with a mounting platform; a leveling hydraulic oil cylinder is arranged between the mounting platform and the connecting bridges of the double movable arms; and the mounting platform is provided with a lifting platform, a truck mounted crane and a multidirectional adjusting manipulator. The multi-functional tunnel operation trolley has the technical effects that mounting work of an arching can be finished by only two or three operation staffs, mechanical operation of mounting of the arching can be realized, an I steel arching and a grid arching can be clamped and then lifted to any position in a tunnel, quick mounting is realized, the construction time is saved, the working efficiency is increased and other construction operations are facilitated.

The invention discloses a multifunctional support trolley for tunnel arches. A scissor lifting table is installed on a trolley platform, general purpose manipulators special for tunnels are installed on two sides of the trolley platform, each general purpose manipulator special for tunnels comprises a telescopic boom, one ends of the telescopic booms are mounted on telescopic boom rotating stands, and the telescopic boom rotating stands are provided with rotating seats and telescopic boom rotating hydraulic cylinders; and one ends of derricking cylinders are installed on the telescopic boom rotating stands, the other ends of the derricking cylinders are installed on the telescopic booms, and manipulators are installed at front ends of the telescopic booms. The multifunctional support trolley has the advantages that installation work of the arches can be finished only by three or four operators, and labor force is saved; the mechanized operation during installation of the arches can be achieved; I-beam arches and grid arches can be lifted to any position in tunnels after being clamped, and arches can be fine adjusted rapidly in all directions; general purpose manipulators special for left and right tunnels work simultaneously, so that rapid installation is facilitated, construction time is greatly saved, and the working efficiency is improved; and the scissor lifting table is installed on the trolley platform, so that other construction operations and tunnel defect treatment besides arch installation are facilitated.

The invention discloses an all-round manipulator special for tunnels. The all-round manipulator special for tunnels comprise a telescopic arm. One end of the telescopic arm is mounted on a telescopic arm rotary support which is provided with a rotating base. The telescopic arm rotary support is provided with a telescopic arm rotary cylinder. One end of a luffing cylinder is mounted on the telescopic arm rotary support, and the other end of the luffing cylinder is mounted on the telescopic arm. A manipulator is mounted at the front end of the telescopic arm. The all-round manipulator special for tunnels has the advantages that the all-round manipulator special for tunnels is mounted on a tunnel arch support trolley, an arch can be mounted by only three or four operators, and labor is saved; mechanical arch erection can be realized, and safety is greatly improved for workers; after I-beam arches and grid arches are clamped, the arches are lifted to any position in a tunnel, the arches can be quickly finely adjusted in front-back, left-right and up-down directions; the left and right all-round manipulators special for tunnels are operated simultaneously, fast mounting can be achieved, construction time is saved greatly, and work efficiency is improved.

An adjustable customized golf club, e.g., a golf putter, as well as a method for using the club, wherein the club has a head, a striking surface attachment, and one or more lock fittings that positively lock the striking surface attachment to the head. The striking surface attachment is one of several selectable attachments, each with different performance characteristics, e.g., rebound. The one or more lock fittings positively lock the striking surface attachments to the putter head such that the club components are firmly fixed, yet are still quickly removable and replaceable. One embodiment provides a golf club comprising a head defining at least one slot, and a replaceable striking surface attachment having protrusions compressed within the at least one slot.

The invention discloses an epidemic situation prediction method based on an ensemble learning model, and relates to the technical field of epidemic situation prediction. The method comprises the following steps: obtaining epidemic situation data; processing the epidemic situation data according to the time dimension to obtain a training set M1 and a verification set M2; training an ensemble learning model according to the training set M1; calculating the verification set M2 according to the trained ensemble learning model to obtain a loss value, selecting the ensemble learning model corresponding to the minimum loss value as a prediction model, and predicting an epidemic situation trend according to the prediction model. According to the method, the influence on an epidemic situation prediction result caused by the time difference of data acquisition is effectively avoided, the future epidemic situation trend can be accurately and dynamically predicted, the model adaptability is high,and rapid fine adjustment can be carried out according to real-time epidemic situation data. The invention further discloses an epidemic situation prediction device based on the ensemble learning model, electronic equipment and a computer storage medium.

The invention relates to an impact test box. The impact test box is characterized by comprising a high-temperature box (1), a low-temperature box (25) and a control system (28); high-temperature liquid (2) and a high-temperature box heating device (3) are arranged in the high-temperature box (1); low-temperature liquid (24) is arranged in the low-temperature box (25); the temperature of the high-temperature box (1) and the temperature of the low-temperature box (25) are both controlled by the control system (28); the high-temperature box (1) is communicated with a liquid inlet of a test piece (13) through a high-temperature pump (7) and a high-temperature liquid inflow valve (8); the low-temperature box (25) is communicated with a liquid inlet of the test piece (13) through a low-temperature pump (19) and a low-temperature liquid inflow valve (17); a liquid outlet of the test piece (13) is connected back into the high-temperature box (1) and the low-temperature box (25) through a high-temperature liquid return valve (15) and a low-temperature liquid return valve (16). The working environment of the impact test box is comfortable and safe, the test process is automatically completed completely, test conditions have unified standards, human instability factors are removed, and energy consumption is reduced.

The invention discloses a 360-degree dead-angle-free short range laser defensive system. A horizontal rotating base, a U-shaped supporting arm connected to the horizontal rotating base, a spherical rotating table tracking system connected between the two top ends of the U-shaped supporting arm through a pitching rotating mechanism, an optics tracking device, a laser ranging unit, a laser focusingunit, a collimating mirror, a set of reflecting mirrors and a beam expanding mirror are included, wherein the optics tracking device, the laser ranging unit and the laser focusing unit are fixed to the spherical rotating table tracking system; and the collimating mirror, the set of reflecting mirrors and the beam expanding mirror are sequentially arranged between an optical fiber laser device QBHstandard interface on the horizontal rotating base and a fast control reflecting mirror on the laser focusing unit. The 360-degree dead-angle-free short range laser defensive system achieves 360-degree dead-angle-free beating, it is not needed to worry about the hinders that optical fiber tail fiber is dragged, wound and the like in operation, and the using flexibility and the safety are greatly improved.

The invention discloses an engineering quality detector for building supervision. A moving screw rod is rotatably connected to the inner side of a limiting moving groove, a bearing hydraulic cylinderis connected to the moving screw rod through a screw rod seat, an L-shaped mounting plate is fixedly connected to the top end of the bearing hydraulic cylinder, a moving fixing block is connected to the top end of the L-shaped mounting plate, and an extending electric push rod is connected to the output end of the moving fixing block; one end of the extending electric push rod is connected with alimiting clamping plate, one end of the limiting clamping plate is connected with a flatness detection plate, and the position, away from the flatness detection plate, of one end of the limiting clamping plate is rotationally connected with a vertical detection plate. Through adjusting the length of the detection plate, a detector can detect the spaces with difference sizes conveniently, the problem that spaces of different sizes cannot be detected due to the fact that the length of the detection plate is fixed is avoided, a plurality of detection plates do not need to be carried, meanwhile, the detection plates are pushed through the electric push rod to be attached to the wall surface, detection errors caused by untight attachment are reduced, and therefore the accuracy of detection datais guaranteed.

The invention provides an automatic prefabricated assembly building component installing and verticality adjusting system. An internal thread is arranged in one end of an outer screw, an inner screw is connected with one end of the outer screw, and an external thread matched with the internal thread is arranged on the inner screw; a hydraulic telescopic rod is connected with the other end of the outer screw and connected with a hydraulic control background, a verticality adjusting rule is arranged on a vertical prefabricated part and communicates with the hydraulic control background, the inner screw can be obliquely supported on the prefabricated part, the hydraulic telescopic rod is obliquely supported on a built structure body, by means of the matching position of the internal thread on the outer screw and the external thread on the inner screw, the length of a rod part of the automatic prefabricated assembly building component installing and verticality adjusting system is adjusted coarsely, the verticality of the prefabricated part is obtained through the verticality adjusting rule, and the hydraulic control background controls the hydraulic telescopic rod to stretch retract according to the verticality so as to fast and accurately adjust the verticality of the vertical prefabricated component finely.

The invention discloses a crawler-type pruning robot. The pruning robot is provided with two sets of telescopic variable-amplitude arm frames, namely a main arm frame and an auxiliary arm frame, so that the operation radius of the pruning robot is greatly increased, and the operation capacity is enhanced; meanwhile, the pruning robot is further provided with four groups of folding hydraulic supporting legs, and each group of folding hydraulic supporting legs can be rapidly folded and unfolded, so that the amplitude variation stability of the arm frames is further improved, and an arm support system consisting of the main arm frame, the auxiliary arm frame and the like can meet the posture requirement of the larger working radius; and besides, by means of the auxiliary arm frame of a telescopic variable-amplitude structure, the pruning angle of a pruning mechanism can be rapidly and finely adjusted, the pruning operation efficiency is greatly improved, and meanwhile the pruning effect is guaranteed. The robot can well meet the accurate and efficient pruning requirement of greening vegetations of different models and different spatial levels in a three-dimensional large plant clusterwith a cambered surface model.

The invention discloses a pressure control device of a large precise ring hot rolling pressure ring rolling machine. The device comprises a baseplate, and is characterized in that a concave cavity is formed in the middle section of the baseplate; a fixed base is fixedly mounted in the concave cavity; a guide rod is arranged above the fixed base; a support table is arranged above the guide rod; a lifting cylinder is arranged on the lower surface of the support table for controlling lifting of the support table; a stand column is arranged at the left end of the baseplate, and is hinged with a cross beam; and a fixed sleeve is arranged at the end part of the cross beam, and is buckled with the guide rod. The device can quickly and timely control the pressure magnitude of an extrusion roller through a sensor to prevent the extrusion deformation of rings so as to improve the product quality.

The invention discloses a fine boring cutter and belongs to the field of machined cutters. The fine boring cutter comprises a round handle, a cutter body and a sliding sleeve shaft, wherein the round handle is inserted in a machine tool; a through hole is formed in the cutter body; a fine tuning device is arranged in the through hole; the sliding sleeve shaft is arranged at the other end of a driven adjusting screw and is movably connected with the driven adjusting screw through a fine tuning nut; a limiting structure is arranged at one end of the sliding sleeve shaft; the sliding sleeve shaft is fixedly connected with a blade bearing through the limiting structure. Compared with the prior art, a double-dial structure formed by combining a driving adjusting dial with a driven adjusting dial is adopted, has the maximum precision of 0.001 mm, and can carry out quick and precise fine tuning on the working radius of the fine boring cutter to realize the purpose of high precision fine tuning, so that the fine boring cutter has excellent market prospect and economic value.

The invention belongs to the technical field of intelligent control, and discloses a three-dimensional plant cluster pruning method with cambered surface modeling, which is realized based on a pruningrobot. The pruning robot is provided with two sets of telescopic variable-amplitude arm frames, namely a main arm frame and an auxiliary arm frame, so that the operation radius of the pruning robot is increased; meanwhile, the pruning robot is further provided with four groups of folding hydraulic supporting legs, and each group of folding hydraulic supporting legs can be rapidly folded and unfolded, so that the amplitude variation stability of the arm frames is further improved, and an arm frame system consisting of the main arm frame, the auxiliary arm frame and the like can meet the posture requirement of a larger working radius; besides, by means of the auxiliary arm frame, the trimming angle of a trimming mechanism can be rapidly and finely adjusted, and the trimming operation efficiency is greatly improved. According to the method, the pruning robot is intelligently controlled, and pruning work of a three-dimensional large plant cluster with a cambered surface shape is well achieved.

The invention provides an inflation clamp with dual adjustment for a refrigerator and a refrigerator inflation method. A first adjusting mechanism and a second adjusting mechanism are arranged in the middle and at the top end of an inflation valve rod correspondingly. The first adjusting mechanism in the middle of the inflation valve rod is an auxiliary adjusting mechanism and can finely adjust axial movement of the inflation valve rod, and the extending length of an internal hexagonal wrench at the lower end of the inflation valve rod can be slowly adjusted through the first adjusting mechanism so as to meet the depth requirements of inflation connectors of different refrigerators. The second adjusting mechanism at the top of the inflation valve rod is a main adjusting mechanism, axial movement of the inflation valve rod can be rapidly and greatly adjusted, and the assembling efficiency is improved. According to the inflation clamp with dual adjustment for the refrigerator and the refrigerator inflation method, the structure of an existing inflation clamp is slightly changed, only threads are additionally arranged in the middle of the inflation valve rod, the second adjusting mechanism is additionally arranged, and the transformation cost is reduced; and after the second adjusting mechanism is independently detached, the inflation clamp can be used as a traditional inflation clamp.

The invention provides a building energy load real-time prediction method based on neural network elastic weight solidification. The building energy load real-time prediction method comprises two steps of neural network model offline training and neural network model real-time fine adjustment. The model offline training step comprises six sub-steps of building energy load historical data acquisition, data preprocessing, model input selection, model hyper-parameter optimization, model parameter training and parameter importance calculation in sequence. The model real-time fine adjustment step comprises six sub-steps of building energy load real-time data acquisition, data preprocessing, model input consistency keeping, model hyper-parameter consistency keeping, fine adjustment of the model by using elastic weight solidification and parameter importance updating. Particularly, fine adjustment of the model is periodically carried out in the form of a sliding window, so that the model can adapt to the change of building energy consumption rules. According to the method, the neural network model is subjected to regular fine adjustment by using an elastic weight solidification technology, so that accurate and reliable real-time prediction of the building energy consumption load is realized.

The invention discloses a pipeline welding self-adapting fixture, relates to the technical field of pipeline welding, and provides a pipeline welding self-adapting fixture with high clamping stability and wide adaptability. It includes a base, support columns and installation blocks, the support columns are arranged at both ends of the base, the installation blocks are arranged on the support columns, a support space is provided between the installation blocks, and the support space is provided for placing The top column of the pipeline, the base is provided with an oil cylinder, and the top column is connected to the top shaft of the oil cylinder through a guide mechanism; the pipeline to be welded can be fixedly clamped by the clamping device, which greatly improves the pipeline welding process. The stability of the pipe effectively improves the welding effect of the pipe. By setting the sliding slant block, it can adapt to the clamping of pipes of different diameters and has wide adaptability. Improve the welding quality of the pipeline, and facilitate popularization and use.

The invention discloses a rapid installation auxiliary device for an excavator rotating assembly. The device comprises two supporting frames, bottom plates are welded to the bottoms of the two supporting frames, and clamping grooves are formed in the tops of the two supporting frames. Bearing beams are connected to the inner walls of the clamping grooves in a clamped mode, and electric telescopic rods are connected to the two ends of the bottoms of the bearing beams. First sliding grooves are formed in the outer walls of the tops of the bearing beams, first sliding blocks are embedded in the inner walls of the first sliding grooves, threaded rods are in threaded connection with the middles of the first sliding blocks, and the threaded rods are connected with first servo motors. Through mutual the cooperation of the bearing beams and the electric telescopic rods, a clamped part can be moved up and down, so that adjustment is made convenient, the part is driven by the first servo motors to move within a small range, and the part is driven by second servo motors to rotate. Through the mutual cooperation, rapid fine adjustment can be made in the installation process, and therefore the installation speed is increased.

The invention discloses a target marking method and a target recognition method for building facade damage detection, and a target recognition model can be quickly and finely adjusted through the target marking method. In the target recognition method, the target recognition model finely adjusted by the target marking method is adopted, so that the target recognition model adopted in the building facade damage detection process is more matched with the target building, and the accuracy and adaptability of the recognition process are improved; the problems that the difference of building facades of different buildings is too large, and the generalization ability and accuracy of a target recognition model are difficult to consider at the same time are solved.

The invention discloses a multifunctional adjustable and rapid telescopic device which is mainly based on the principle that forces applying on the same area are identically equal while forces with opposite directions mutually offset, in particular to an adjustable telescopic device which can be subject to rapid fine tuning and free lifting by means of a clamp tenon carrying out lifting adjustment based on the slope principle. The telescopic device comprises an outer frame and an inner frame, wherein the outer frame is a hollow tubular body, and is provided with a plurality of first clamp parts; and the inner frame is arranged in the outer frame, and the length of the whole telescopic device can be adjusted by adjusting the clamp points of the first clamp parts and second clamp parts. The device of the invention has the advantages that the length of the whole telescopic device can be adjusted, and trace adjustment can be realized at the same time, thereby avoiding the cost brought by replacing a whole manhole frame cover.

The invention provides a solid particle heat exchange system for a fluidized bed, and belongs to the field of heat exchangers. The solid particle heat exchange system for the fluidized bed comprises afluidized bed heat exchanger, an air supply part and a reflux part; the air supply part comprises an air supply pipeline which is provided with a heat; the air supply pipeline is provided with a first air inlet end, a first air outlet end and an air mixing section positioned between the first air inlet end and the first air outlet; the reflux part comprises a reflux pipeline; the reflux pipelineis provided with a second air inlet end and a second air outlet end; the first air inlet end is connected with a fresh air inlet; the first air outlet end communicates with a fluidizing air inlet of the fluidized bed heat exchanger; a fluidizing air outlet of the fluidized bed heat exchanger communicates with the second air inlet end; the second air outlet end is connected with the air mixing section; and the air mixing section is used for mixing the gas introduced from the first air inlet end and the gas flowing out from the second air outlet end. Preheating and temperature rising of the fluidized bed heat exchanger and prepacking can be completed effectively, so that high-temperature particles are prevented from entering the fluidized bed heat exchanger to affect the service life of theheat exchanger because of rising temperature too fast.

The invention discloses a high-precision voice coil motor which comprises a shell, an upper clip, a lower clip, a lens vehicle, a first magnet, a second magnet, a first coil and a second coil. The outer side of the upper clip is fixedly connected with the upper portion of the shell, the inner side of the upper clip is connected with the top of the lens vehicle, the outer side of the lower clip is fixedly connected with the lower portion of the shell, the inner side of the lower clip is connected with the bottom of the lens vehicle, a magnet yoke is arranged between the upper clip and the lower clip, a separation portion is arranged in the middle of the magnet yoke, the first magnet is positioned on the upper side of the separation portion, the second magnet is positioned on the lower side of the separation portion, the first coil and the second coil are fixed onto the lens vehicle, the first coil corresponds to the first magnet, the second coil corresponds to the second magnet, the number of turns of the first coil is larger than the number of turns of the second coil, and independent control circuits are connected with the first coil and the second coil. The high-precision voice coil motor has the advantages that the different coils can be switched over to be powered on according to different requirements of a rough adjustment mode and a fine adjustment mode, quick rough adjustment and accurate fine adjustment can be carried out, and accordingly the efficiency can be improved.

The invention relates to a durability testing device capable of realizing an automobile door opening and closing sealing force. The device comprises a frame, a fixing bracket, a first supporting frame, a first air cylinder, an unlocking device, and a controller; the frame is used for fixing a vehicle door; the fixing bracket is arranged on the frame; the first supporting frame is arranged on the fixing bracket; the first air cylinder is arranged on the first supporting frame and is connected with the inner opening handle of the vehicle door; the unlocking device arranged at one side of the vehicle door; the controller is electrically connected with the unlocking device and the first air cylinder; the other side of the vehicle door is hinged to the fixing bracket; and the unlocking device comprises a second supporting frame arranged on the fixing bracket, a sliding mechanism arranged on the second supporting frame, a second air cylinder arranged on the second supporting frame through ahinge mounting seat, an adjusting mechanism connected with the second air cylinder and arranged on the sliding mechanism, and a lock catch connected with the adjusting mechanism. The durability testing device capable of realizing the automobile door opening and closing sealing force has the advantages of high stability and small occupied space. With the device adopted, the position of the lock catch can be finely adjusted quickly, and testing efficiency is improved.

The invention provides an interlayer insulator mandril core for a converter valve tower. The mandril core comprises a mandril core body; threads are formed at one end of the mandril core body to form a mandril core thread rod; or threads are formed at the two ends of the mandril core body to form two mandril core thread rods. In addition, the mandril core also includes a metal connecting end connected with the mandril core thread rod; the metal connecting end includes a pull rod and a turnbuckle; a thread is formed at one end of the pull rod to form a pull rod thread rod; and the mandril core thread rod matches the turnbuckle and can be screwed into the turnbuckle from the other end of the turnbuckle. When the turnbuckle rotates, the length of the metal connecting end can be adjusted, thereby realizing fine tuning of the length of the interlayer insulator mandril core for a converter valve tower. In addition, the invention also discloses an interlayer insulator for a converter valve tower. According to the invention, when a converter valve is installed, fine tuning of the length of the interlayer insulator for a converter valve tower can be realized, so that forces exerted on all insulators for converter valve towers become uniform.

The invention discloses a building supervision engineering quality detection system based on cloud data. The system comprises a controller, a cloud server, a detector, a turntable alarm, and a data input end device. A worker inputs engineering data detected by the detector through the data input end device and transmits the data to the cloud server. The cloud server calculates and compares the detected data with various pre-stored data industry standards, and sends a signal to the controller when the difference between the detected data and the pre-stored data industry standards is greater than a set range, and the controller controls a turntable motor of the turntable alarm to rotate by a corresponding phase angle, so that the turntable alarm indicates corresponding data alarm; meanwhile,in the rotating process of the turntable motor, rotating energy is used for pressurizing the air storage tank, and the pressure of the air storage tank is used for blowing the surface of the storagebarrel.

The invention provides an in-mold vertical fine adjustment device of a punching mold. The in-mold vertical fine adjustment device comprises an upper mold seat, a base plate, a clamp plate, a convex mold, a sliding adjusting mechanism and an elastic limiting mechanism. The base plate is arranged on the bottom wall of the upper mold seat. The clamp plate is arranged on the bottom wall of the base plate. A clearance groove is formed in the base plate. The convex mold penetrates through the clamp plate to be in sliding connection in the clamp plate. The sliding adjusting mechanism is arranged in the clearance groove and is arranged on the bottom wall of the upper mold seat. The elastic limiting mechanism is arranged on the clamp plate and is arranged below the sliding adjusting mechanism. According to the in-mold vertical fine adjustment device, fine adjustment of the convex mold in the vertical direction in the punching mold can be completed by twisting an adjusting screw, the operation process of adjusting the height of the convex mold is simplified, the convex mold can be finely adjusted rapidly, the mold can be put into production and service rapidly, the adjusting labor hours aresaved, and the shutdown time duration of a punching machine table is reduced.

The invention discloses a crawler-type pruning robot. The pruning robot is equipped with two sets of telescopic luffing booms, a main boom and a sub-boom, which greatly improves the working radius of the pruning robot to enhance the working ability; The robot is also equipped with four sets of foldable hydraulic outriggers, each set of foldable hydraulic outriggers can be quickly retracted to further improve the stability of the boom luffing, so that the boom composed of the main boom and the auxiliary boom The frame system can meet the posture requirements of a larger working radius; in addition, the present invention can realize the rapid fine-tuning of the trimming angle of the trimming mechanism through the jib frame of the telescopic luffing structure, which greatly improves the efficiency of the trimming operation, and at the same time ensures trimming effect. The robot of the present invention can well meet the requirements of precise and efficient pruning of green vegetation of different shapes and different spatial levels in the three-dimensional large-scale plant cluster with arc shape.

The invention relates to a grinding machine, particularly relates to an automatic grinding machine for an arc-shaped corner of a chair backrest, and aims to provide the automatic grinding machine forthe arc-shaped corner of the chair backrest, which can be used for fixing chairs with different heights, uniformly grinding arc-shaped corners of the chair backrests with the different heights and collecting wood chips falling off after grinding. According to the technical scheme of the machine, the automatic grinding machine for the arc-shaped corner of the chair backrest comprises a second support, a supporting device, a first support and the like, wherein the supporting device is fixedly connected to the top of the second support, the first support is installed at the top end of the supporting device, and the first support is in a 7-shape. According to the machine, a second fixing block can be driven to rotate anticlockwise through unidirectional rotation of a chain, the second fixing block rotates anticlockwise to continuously drive a sliding rail to move left and right and drive a rechargeable polishing machine to move up and down to grind the arc-shaped corner on one side of thechair backrest, and the grinding position can be adjusted in the front-back direction and the left-right direction.