4797 results about "Mechanical drive" patented technology

The invention discloses a hybrid power combine harvester and a control method and a controller thereof, and relates to the technical field of agricultural machinery. The harvester comprises a hybrid power system which comprises a power battery and a range extender composed of an engine and a generator; a working system including a plurality of working members and a plurality of working motors that enable each working member to be driven by the motor; the walking system comprises walking wheels and walking motors used for driving the corresponding walking wheels; the control system comprises a whole vehicle controller and a plurality of motor controllers corresponding to the operation motors, the walking motors and the generators respectively. Wherein the hybrid power system responds to a power control strategy of the control system and provides power for corresponding motors in the operation system and the walking system so as to drive the harvester to walk and operate. The full-electric-drive hybrid power scheme of the harvester is achieved, and the efficiency problem caused by multi-stage mechanical transmission of a traditional harvester is avoided.

The invention discloses a mechanical transmission system fault trend prediction system based on dynamic feature recognition, and relates to the technical field of mechanical state monitoring. Comprising the following steps: synchronously acquiring a load torque signal and a lubrication state parameter signal of a transmission system and vibration acceleration signals of a plurality of measuring points through a signal acquisition module; the working condition decoupling characteristic generation module carries out time-frequency analysis on the vibration signal, calls a pre-stored load disturbance spectrum template according to a load torque signal to carry out adaptive differential processing so as to eliminate load fluctuation interference, and calls a correction rule set according to a lubrication state parameter signal to carry out form recombination on the signal so as to compensate the lubrication state influence; and finally outputting a working condition decoupling feature representing the health state of the mechanical part. And the trend prediction module calculates and obtains fault development trend and residual life estimation data through a pre-trained fault prediction model. According to the method, the dynamic characteristics representing the essential degradation of the part are effectively extracted, and the accuracy and reliability of fault trend prediction of the mechanical transmission system are improved.

To achieve the above objective, the present invention provides the following technical solution: a handheld magnifier with an adjustable focal length, comprising an upper shell and a lower shell. The upper shell is equipped with a protection plate, a display screen, and a silicone key, while the lower shell contains a PVC film. A battery, a keyboard, a main board, a wave wheel, a sector gear, a lens assembly, and a light board are installed between the upper and lower shells. The lens assembly consists of an FPC cable, a chip, a guide fixing seat, a roller, a lens holder, a lens cover, and a glass sheet. Manual precise focusing is achieved through a mechanical transmission structure consisting of a wave wheel, sector gear, and spiral groove. This structure provides a wide adjustable range of clarity to accommodate observation needs at different distances.

The invention discloses a new energy automobile driving motor safety management system and method based on intelligent control, particularly relates to the technical field of driving motors, and provides an important basis for evaluating mechanical interaction between motors by obtaining mechanical transmission coupling information to calculate a mechanical transmission coupling coefficient; electrical coupling coefficients are calculated by acquiring electrical coupling information among the motors in the multi-motor driving system, transmission and influence of electrical signals among the motors are further revealed, and abnormity in an electrical system is recognized; control coupling information among motors in a multi-motor driving system is obtained to calculate a control coupling coefficient to quantify the coupling degree of motor control signals, cooperative control behaviors among the motors are determined, each motor provides independent fault information, and a mechanical transmission coupling coefficient, an electrical coupling coefficient and the control coupling coefficient are synthesized to realize cooperative control of the motors. A single-point cooperative fault discrimination model is constructed, and a single-point motor fault and a system cooperative fault can be effectively distinguished.

The invention relates to a mechanical leg for a mobile platform, belongs to the technical field of mobile carriers, and solves the problems that in the prior art, torque change is generated at the moment of forward and reverse rotation of a motor of a mechanical leg type mobile platform, the mechanical leg vibrates in the operation process, frequent forward and reverse rotation switching can cause large impact on a mechanical transmission part, and the service life of the mechanical leg is influenced. And the abrasion of parts is accelerated. The robot comprises a driving unit, a thigh unit and a shank unit, the driving unit can be connected with a moving platform, the thigh unit is connected with the driving unit, and the shank unit is arranged on the thigh unit. When the first motor of the mechanical leg rotates, the driving rod can be driven to rotate around the output shaft of the first motor, and the transmission rod is driven to do reciprocating motion; the first motor does not need to be switched between forward rotation and reverse rotation, and torque change cannot be generated frequently. Vibration of the mechanical leg and impact on a mechanical transmission part can be avoided, and part abrasion is relieved.

The invention relates to the technical field of precision automatic lathe machining, in particular to a precision automatic lathe workpiece machining method which comprises the steps that a double-spindle synchronous machining mode is adopted to achieve seamless connection of rough machining and finish machining, clamping errors are reduced, a servo motor drives a tool shaft to achieve nanoscale feeding compensation, and traditional mechanical transmission precision limitation is broken through. The integrated infrared temperature measurement module monitors the temperature of a cutting area in real time and dynamically adjusts the spraying angle and flow of cooling liquid based on machining parameters, machining thermal deformation is effectively controlled, and a dynamic weight self-adaptive interpolation model is established to balance machining efficiency and contour precision. Main shaft load, tool vibration and workpiece deformation data are collected in real time through a multi-sensor data fusion system, axial following errors are corrected through an iterative learning control algorithm, contour consistency is improved, surface defects are eliminated through a nanoscale vibration compensation mechanism, machining efficiency is improved, and machining precision is improved.

The utility model belongs to the technical field of mechanical transmission, and particularly relates to an electric cylinder with a built-in force sensor, which comprises a lead screw assembly, a force sensor assembly and a force sensor assembly, the lead screw assembly comprises a nut and a screw rod, and the nut is movably sleeved on the outer side of the screw rod; the piston rod is fixedly connected with the nut; the bearing seat is arranged on the screw rod in a sleeving mode, the front end and the rear end of the bearing seat in the axial direction are connected with first bearings correspondingly, and the first bearings are connected with the screw rod; and the force sensor is arranged on the screw rod in a sleeving manner, and the force sensor is connected with the bearing seat. The axial tension and the axial pressure from the screw rod are transmitted to the bearing seat through the two first bearings respectively, and then the tension and the pressure are transmitted to the force sensor through the bearing seat respectively, so that output of pressure signals and pressure signals is realized.

The invention discloses a mechanical intelligent capping DCDC electric control system for a mixed iron vehicle. The system has a simple and reasonable design. A DC / DC module is used to provide a high-voltage DC power supply for a frequency converter. A wireless AP terminal is used to realize remote or local HMI control of a frequency conversion PLC control system. Mechanical transmission drive mechanisms such as a worm gear and a lead screw are used to quickly realize one-key automatic capping and removal of a capping actuator and jog the actions of each sub-part. The on-board touch screen and a host computer can provide real-time feedback of the current working state, the health status of each on-board device and other information, thereby providing a visual safe operation guarantee for the capping electrical control system and operators, and the control is safe and reliable. At the same time, each unit of the control system adopts a modular installation method, which solves the problem of rapid removal and various fault processing of the capping device and the electric control system, and greatly saves the production and maintenance costs of the iron can flipping.

The invention discloses a mahjong machine and a slope tile playing device thereof, which are characterized in that a planet carrier and a planet wheel which rotate actively rotate around a fixed sun wheel, and a tile feeding push rod is driven by the planet carrier, the planet wheel and a turntable to rotate to push and feed tiles; a mahjong lifting swing arm is driven by a planet carrier, a swing rod, a rack and a mahjong lifting gear to swing to drive a mahjong lifting supporting plate to lift mahjong; two transmission paths of a planet carrier and a planet wheel are ingeniously utilized, so that a mahjong feeding push head does not push mahjong tiles when a mahjong tile lifting supporting plate is controlled to descend only through mechanical transmission cooperation by a motor, and the mahjong tile lifting supporting plate does not move when the mahjong tile feeding push head pushes the mahjong tiles; when the tile lifting supporting plate is lifted, the tile feeding pushing head does not push tiles, after the tile lifting supporting plate is lifted, the tile feeding pushing head moves out of the tile storage groove, the lifting action of the tile lifting supporting plate and the tile pushing action of the tile feeding pushing head do not interfere with each other, the structure is simple and reasonable, action connection is good, operation is stable and reliable, the mahjong machine is coherent and smooth in action, noise is low, and the user experience is good.

The invention provides a multi-degree-of-freedom coupling execution mechanism for deflection of a water tunnel test model. The multi-degree-of-freedom coupling execution mechanism comprises a shell, an attack angle motion module, a yaw motion module and a rolling motion module, wherein the attack angle motion module, the yaw motion module and the rolling motion module are arranged in the shell; according to the mechanism, in the aspect of attack angle motion, a pitching motor drives a pitching lead screw through a mechanical transmission assembly, and control over the attack angle of a model balance component can be achieved by combining a translation sliding block and a pitching sliding block which slide in a matched mode in the height direction. The yaw movement module drives a yaw lead screw through a yaw motor, a pitching arc-shaped guide rail is stably pushed to move along the yaw arc-shaped guide rail through a yaw sliding block, and accurate adjustment of the yaw angle is achieved. The rolling motion module effectively realizes the rolling action of the model balance component through a rolling motor; the pitching, yawing and rolling motion modules can be independently controlled and can also be controlled in a coupling mode, the unique design greatly improves the flexibility and adaptability of mechanism motion control, and various complex working condition requirements can be accurately met.

The invention discloses intelligent detection equipment for internal defects of a titanium alloy cartridge receiver, and relates to the technical field of nondestructive testing, the intelligent detection equipment comprises a supporting base, a self-adaptive electromagnetic active vibration isolation assembly and a magnetic suspension pneumatic fine adjustment assembly, and by means of the synergistic effect of two core assemblies, namely the self-adaptive electromagnetic active vibration isolation assembly and the magnetic suspension pneumatic fine adjustment assembly, the internal defects of the titanium alloy cartridge receiver are detected. Ultra-stable vibration isolation and nanoscale precise positioning of the industrial CT three-coordinate measuring machine in the precise scanning process are achieved, and different from a traditional lag and friction scheme depending on passive air floating vibration isolation and mechanical transmission positioning, high-precision scanning operation is more stable and more precise, and the precision of the industrial CT three-coordinate measuring machine is improved. Firstly, a magnetic suspension friction-free support of the magnetic suspension pneumatic fine adjustment assembly is matched with a pneumatic nozzle matrix in a zero-contact and zero-abrasion mode, the bottleneck that a traditional lead screw guide rail mechanism is large in positioning error due to friction stick-slip and idle stroke is broken through, stable support is achieved through non-contact suspension, and accurate micro-power output is achieved through pneumatic counter-acting force; and the full-scale range from macroscopic positioning to nanoscale fine adjustment is ensured.

The invention belongs to the technical field of battery detection, and particularly relates to a new energy power battery short circuit test cabinet, which comprises an explosion-proof cabinet, the explosion-proof cabinet is provided with a transmission cabin and a test cabin, and a transmission system, a termination system and a power-on system are arranged in the transmission cabin. In order to avoid deflagration of a circuit in a test process and reduce damage to detection equipment, an impact transmission system and a termination system are arranged, a mechanical transmission mode is utilized, short-circuit wiring of a battery is immediately interrupted when the battery explodes, impact force generated by explosion is directly converted into mechanical action, a signal conversion process is not needed, and the detection efficiency is improved. Compared with the prior art, the device has the advantages of higher response speed, higher extreme environment resistance and lower manufacturing cost, and can effectively reduce the damage of explosive shock waves to the test cabin in the test process.

The invention provides an EMB sensorless clamping force estimation method based on multi-signal fusion and displacement compensation, and belongs to the technical field of vehicle braking, and the method comprises the steps: carrying out the modeling of an EMB system mechanical model; on the basis of the EMB system mechanical model established in the step S110, executing clamping force estimation; on the basis of the EMB system mechanical model established in the step S110, current-position information fusion is adopted to execute contact point detection; on the basis of the contact point detection result in the step S130, performing contact point detection position error compensation; on the basis of S140 position error compensation, a return stroke backlash compensation mechanism is introduced, the mechanical transmission gap error is further corrected, and the clamping force estimation precision is improved; and executing clamping force control scheme design based on the results of the steps. According to the method, a good clamping force estimation effect can be achieved, the system reliability is remarkably improved while the cost is reduced, and the method has good engineering application value.

The invention relates to the technical field of mechanical transmission, in particular to a reinforcement learning compensation method and system for gear multi-body dynamics constraint, and the method comprises the steps: building a multi-body dynamics digital twinborn model containing bearing rigidity and gear meshing force; constructing an adaptive reward function based on nonlinear manifold mapping, and dividing a system state space into a small deviation domain and a large deviation domain according to an angle deviation threshold value; training the multi-body dynamic model based on a depth deterministic strategy gradient algorithm to obtain a compensation strategy; the obtained compensation strategy is applied to a multi-body dynamic model, and an optimal compensation signal is obtained through self-adaptive fusion of static compensation and dynamic compensation, so that the training efficiency of a reinforcement learning algorithm in a complex nonlinear system is improved, the adaptability of the system to working condition changes is enhanced, the vibration of a gear system is remarkably reduced, and the reliability of the system is improved. The angle control precision is improved, and the service life of equipment is prolonged.

The invention discloses a gear coding error dynamic compensation method based on multi-sensor phase difference fusion, which belongs to the field of mechanical transmission, and comprises the following steps of: cooperatively acquiring gear phase information through a Hall sensor and a photoelectric sensor, and calculating phase difference data; constructing a rotating speed, temperature and load three-dimensional topology error space; training an error prediction model based on a seven-layer long-short-term memory network; a self-adaptive compensation strategy is executed, and when the error is larger than 0.1 degree, the driving rotating speed is increased; implementing closed-loop feedback control, and triggering model self-calibration when a difference value between an actual error and a predicted error is greater than 0.16 degree; a transfer learning mechanism is introduced, the bottom-layer feature extraction capability is reserved, and only upper-layer parameters are updated; the system state monitoring and collaborative optimization are realized, the working mode and resource allocation are dynamically adjusted, the precision and stability of the gear transmission system are remarkably improved, and the method has wide engineering application value.

The invention belongs to the technical field of mechanical transmission, and discloses a conductor ring and magnetic resistance array composite permanent magnet thrust bearing and a damping force calculation method. The conductor ring and magnetic resistance array combined type permanent magnet thrust bearing realizes the bearing of non-contact magnetic thrust through the combination of the eddy current ring and the magnetic group array. When thrust from a propeller at the stern end of a propulsion shafting acts, the rotor magnetic group array axially moves, axial traction force is generated between the rotor magnetic group array and the stator magnetic resistance array to counteract the thrust action from the axial direction, meanwhile, the magnetic group array cuts the vortex ring, induction damping is generated on the surface of the vortex ring, damping force is formed, and the vortex ring is driven to rotate. And therefore, the longitudinal vibration during transmission of the propulsion shafting is reduced, and the propulsion shafting system is more silent and stable during operation. In addition, the damping force calculation method does not need complex three-dimensional structure modeling and grid division, is simple in solution, high in universality and short in calculation time consumption, and has high engineering application practical value.

The invention discloses a magnetic coupling speed-adjustable propeller and a control method thereof, and belongs to the technical field of underwater navigation and electric propulsion. A motor, a driving assembly and a driven assembly of the propeller are arranged in a cabin, a motor driving shaft is connected with the driving assembly, and a plurality of first permanent magnets are arranged on the driving assembly; a plurality of second permanent magnets are arranged on the driven assembly, and the first permanent magnets are in magnetic fit with the second permanent magnets; an impeller is arranged outside the cabin body and is connected with a driven assembly; the magnetic controller comprises a disc and electromagnets, the disc is rotationally connected with the driving assembly, the multiple electromagnets are detachably arranged on the disc and arranged between the first permanent magnet and the second permanent magnet, and when the driving assembly drives the driven assembly to rotate, the states of the electromagnets are changed, and the speed of the impeller can be adjusted. According to the propeller, friction loss in traditional mechanical transmission is eliminated, so that the propeller has a multi-mode speed regulation function and can adapt to more application scenes, and the transmission efficiency is improved.

The invention provides a power dividing type hybrid power tractor driving system. The power dividing type hybrid power tractor driving system comprises a power source and a power dividing type multi-mode switching mechanical transmission system, wherein the power source is composed of an engine, a P3 motor and a PS motor. The invention further provides a control method of the power split type hybrid power tractor driving system. Through the arrangement of the P3 motor, the PS motor, the power coupling mechanism, the clutch and the brake, energy distribution and efficient work of the engine are achieved. The device is compact in structure and good in dynamic property and economical efficiency, can realize multi-mode driving operation according to complex working conditions of the tractor, and has the advantages of interval stepless speed change, accurate control and the like.

The utility model relates to the technical field of transmission systems, and discloses a planetary reducing mechanism and a mechanical transmission device. The planetary speed reducing mechanism comprises a shell, a sun wheel assembly, a planet wheel assembly and an oil filling pipe. An oil return cavity is formed in the shell; the sun gear assembly is rotatably arranged in the shell; the planet wheel assembly is rotatably arranged in the oil return cavity, a lubricating runner is formed between the planet wheel assembly and the sun wheel assembly, an oil outlet of the lubricating runner is located on a planet shaft of the planet wheel assembly, the planet wheel assembly is further connected with an output shaft, the output shaft is provided with a first shaft hole extending in the axial direction, and the first shaft hole is communicated with an oil inlet of the lubricating runner; the oil injection pipe is inserted into the first shaft hole. According to the planetary speed reducing mechanism, active lubrication and passive lubrication are integrated, the lubrication effect is improved, the use amount of lubricating oil is reduced, oil guide parts do not need to be introduced, the overall structure is simple, and the cost is reduced.

The invention provides clamping and lifting equipment, and relates to the technical field of mechanical transmission equipment, the clamping and lifting equipment comprises a translation device, a lifting mechanism and a clamping mechanism, and the lifting mechanism is fixedly connected with the translation device; the clamping mechanism is movably connected with the lifting mechanism; the clamping mechanism comprises a supporting structure, a turnover mechanism, a clamping jaw assembly and a clamping air cylinder, the supporting structure is movably connected with the lifting mechanism, the turnover mechanism is arranged on the supporting structure and fixedly connected with the supporting structure, the clamping jaw assembly is fixedly connected with the turnover mechanism, and the clamping air cylinder is arranged on the clamping jaw assembly. The clamping jaw assembly is fixedly connected with the clamping air cylinder, and an adjusting structure is fixedly connected to the clamping jaw assembly. According to the clamping and lifting equipment, the effect of clamping stability of spherical objects is effectively enhanced, and powerful support is provided for the fields of industrial automation, logistics transportation and the like.

The invention relates to the technical field of mechanical transmission, and provides a connecting rod transmission mechanism and a mirror image engine. The connecting rod transmission mechanism comprises a power sliding block, a power connecting rod and two power pistons, the power connecting rod comprises a connecting rod base body and two linear rod parts, the linear rod parts extend in the first direction, the front end of each linear rod part is connected with one power piston, and the rear end of each linear rod part is fixedly connected with the connecting rod base body; the two linear rod parts are located on the two opposite sides of the connecting rod base body in the first direction, and the power sliding block is installed on the connecting rod base body in a sliding mode in the second direction. The linear rod part does not need to contain a bearing, rotation motion does not exist, the overall cross section is uniform or roughly uniform, standard sinusoidal motion / cosine motion is met, the size reduction design of the linear rod part and the air cylinder is facilitated, the compression ratio in the air cylinder is increased, the combustion efficiency is improved, the overall structure of the engine is more compact, and the needed engine cabin space is reduced. And the power-to-weight ratio and the acceleration performance of the vehicle can be improved.

A truck bed mounted carrier system includes a frame assembly installable in a truck bed with lateral supports and outer main supports, inner supports that slide within the outer main supports, a center outer support, and a second inner support that slides within the center outer support. A carrier frame coupled to the frame assembly extends from and retracts into the truck bed, supported by radius supports that provide structural integrity when extended. The system features a pulley assist mechanism with gas springs that creates a counterbalance force, a mechanical drive assembly with sprocket and roller chain for movement control, and deployable transport stands for ground support during loading operations. Adjustable bed rail struts with locking mechanisms secure the system to the truck bed without permanent modification. Low-friction materials and strategically positioned slides ensure smooth operation throughout the extension and retraction cycles.

The present invention discloses a robotic arm of an industrial robot, belonging to the field of mechanical transmission. The arm includes: a four-axis housing, a wrist housing, and a forearm housing composed of a rear-end forearm housing, an intermediate forearm housing, and a front-end forearm housing. A four-axis reduction mechanism is arranged inside the four-axis housing, a five-axis reduction mechanism, a six-axis first-stage reduction mechanism, and a six-axis second-stage reduction mechanism are arranged inside the forearm housing, and a six-axis third-stage reduction mechanism is arranged inside the wrist housing; the four-axis, five-axis, and six-axis reduction mechanisms all adopt a combined transmission mode of hypoid gears and involute gears, having the advantages of stable operation and strong impact resistance. While ensuring a reasonable layout, the entire arm system takes into account the overall lightweight design. In addition, the connection methods of the external interfaces with each joint and the motor interfaces adopt a flexible design, and the interfaces can be flexibly converted, with stronger applicability.

The invention aims to provide a gas-driven photovoltaic module laminating machine aiming at the technical problem that a laminating machine in the prior art is non-uniform in lamination of photovoltaic modules, the gas-driven photovoltaic module laminating machine comprises an upper box, a lower box and a laminated board, the upper box comprises an upper box body, the lower box comprises a laminating workbench, and the laminated board is arranged on the laminating workbench. The upper box body is driven by the upper box lifting driving device to ascend and descend so as to be close to or far away from the laminating worktable, the pneumatic laminating machine adopting the structure has the advantages that the uniformity of the pressure on the surface of a laminated plate is good, and the condition of relatively large point-shaped pressure cannot be generated; the rigid laminated board driving device adopts a gas driving structure, is positioned on the inner side of the upper box body and is not provided with a mechanical driving device, so that the vertical space can be saved, and the technical problem that a single-layer laminating machine in a multi-layer laminating machine in the prior art occupies a large space due to a driving device can be solved.

The utility model discloses a novel springboard angle detection device, which comprises a springboard connecting plate, a large gear ring and a fixedly arranged encoder body, the rotation axis of the large gear ring and the rotation axis of the springboard connecting plate are coaxially arranged, and the inner side of the large gear ring is in meshed connection with a pinion. The small gear is connected with a detection shaft of the encoder body and drives the detection shaft to rotate, and the encoder obtains the rotation angle of the small gear and converts the rotation angle to obtain the overturning angle of the springboard. The novel springboard angle detection device is installed between the springboard connecting plate and the speed reducer, is small in size, improves the space utilization rate of the springboard, and does not interfere with a channel above the springboard. A mechanical transmission mode is adopted, the structure is simple and stable, machining is easy and convenient, bolt connection is adopted, replacement is convenient, and data are accurate. By means of the swing arm structure, angle rotation measurement can be kept all the time when relative axial or radial displacement occurs between the large gear ring and the encoder body, and the phenomenon that the large gear ring is separated from the small gear during relative movement is avoided.

The utility model discloses a silent synchronous pulley, which belongs to the technical field of mechanical transmission structures, and comprises a pulley main body, uniformly distributed gear teeth are arranged on the pulley main body, flange structures are arranged at two axial ends of the pulley main body, and a first bump is arranged on one side, facing the gear teeth, of each flange. According to the scheme, the flange structures are arranged at the two axial ends of the belt wheel body and used for directly abutting against the two side edges of the synchronous belt, the flanges are fixedly connected with the belt wheel body, the first protruding blocks face the middle position of the belt wheel body and make contact with the synchronous belt, and the protruding structures of the first protruding blocks enable the contact area of the first protruding blocks and the side edges of the synchronous belt to be reduced; in other words, the contact area of the synchronous belt and the flanges is reduced, so that when the synchronous belt and the belt wheel body rotate in a matched mode, the friction force between the synchronous belt and the flanges is reduced, and meanwhile the noise reduction effect is achieved; in addition, due to the fact that friction force is reduced, heat generated by the synchronous belt is reduced, and the service life of the synchronous belt is prolonged.

The invention discloses a control method, device and equipment of a hydrogen engine and a storage medium. The control method comprises the steps that the engine rotating speed and the engine torque are obtained; under the transient working condition of the engine, the operation area of the engine is determined according to the engine rotating speed and the engine torque; and controlling the driving motor, the mechanical transmission assembly or the exhaust gas turbine according to the operation area. According to the technical scheme, the engine rotating speed and the engine torque are obtained in real time, the operation area of the engine is judged, different supercharging modes are determined through the waste gas turbine, the driving motor and the mechanical transmission assembly according to the operation area of the hydrogen engine, the problem that the transient dynamic performance is poor is effectively solved, and the application range is wide. The transient dynamic performance of the hydrogen internal combustion engine is improved, and efficient cleaning application is achieved.

The utility model relates to a periodic modification structure of a reciprocating mechanical transmission gear, which comprises a transmission gear, a non-meshing surface of the transmission gear is modified to form a meshing clearance, and the meshing surface is gapless. The gear backlash on the meshing side of the gear is eliminated to prevent the gear from being knocked in the return stroke due to the alternate change of positive and negative torque, the non-meshing side is shaped to form the backlash to prevent the interference seizure phenomenon in the gear transmission process, and the gear transmission can achieve the states of more stable operation and lower vibration noise after being changed. The transmission gear is especially suitable for transmission gears of piston connecting rod reciprocating motion machines such as Stirling engines and diesel engines.

The invention discloses an intelligent control method and system for an electric actuating mechanism, and particularly relates to the technical field of intelligent control. The valve position feedback signal is subjected to time sequence analysis, the valve response stability is evaluated, the small signal chaos characteristic quantity of the electric actuating mechanism is analyzed, and whether the chaos critical state is reached or not is judged based on a chaos prediction algorithm. And determining whether to trigger an advanced intervention control strategy or not according to the judgment results of the valve response stability and the chaos critical state. And the precision deterioration degree of the mechanical transmission part is evaluated by analyzing the mechanical displacement curve, and the influence of abnormal energy consumption on the operation efficiency is analyzed through the energy consumption data of the execution part. By comprehensively analyzing the response stability, the precision deterioration degree and the abnormal energy consumption influence of the valve, the operation risk of the electric actuating mechanism is evaluated, and whether the control parameters need to be adjusted is judged, so that the accurate monitoring and intelligent optimization of the operation state of the electric actuating mechanism are realized, and the operation reliability of the electric actuating mechanism is improved.

The invention relates to the technical field of gas analysis and detection instruments, and discloses a gas analysis and detection instrument which comprises a gas analysis and detection instrument body, a transverse adjusting piece is arranged above the gas analysis and detection instrument body, a transverse and longitudinal connecting piece is mounted on the transverse adjusting piece, and a longitudinal adjusting piece is connected to the bottom of the transverse and longitudinal connecting piece; wherein the gas analysis detector main body is in sliding connection with the front surface of the longitudinal adjusting piece, multi-dimensional accurate positioning of environmental gas sampling is realized, and the core advantage is reflected on a transverse adjusting system: a mechanical transmission mode of driving a threaded rotating rod by a servo motor is adopted, and dual guidance of a sliding rail and a limiting sliding block is matched, so that the positioning accuracy is improved; and the detector main body can stably move along the horizontal direction. Due to the unique combined design of the buffering device and the adjustable limiting mechanism, flexible buffering protection of the moving terminal point is achieved, and a user is allowed to customize the stroke range according to actual requirements.