296 results about "Clutch control" patented technology

The invention discloses a clutch torque transmission characteristic dynamic test method, and relates to the field of clutch control, and the method comprises the steps: building a test bench, and separating a clutch, the transmission is put into a direct gear; presetting working condition parameters, wherein the working condition parameters comprise an output dynamometer target rotating speed N, an input dynamometer target rotating speed N and a clutch actuator target initial position P; obtaining a preset target torque loading strategy; according to the preset target torque loading strategy, the current position of a clutch actuator is controlled, a clutch friction pair is made to move relatively, and meanwhile test data are collected; acquiring a preset temperature threshold value; according to the test data, whether the clutch reaches a preset temperature threshold value or not is judged; if not, continuing to execute the preset target torque loading strategy; if yes, acquiring a target test position, and generating test data of the target test position; and preprocessing the test data according to the target test position test data, and generating an all-position test result.

This invention provides a hybrid power drive device and a vehicle having the same. The hybrid power drive device includes an engine, a first motor, a second motor, and a compound planetary gear set. The output end of the engine is driven to the motor shaft of the first motor. The motor shaft of the second motor drives the wheels to rotate. A first sun gear meshes with a first planetary gear, and both the second sun gear and the first planetary gear mesh with a second planetary gear. The second planetary gear meshes with a ring gear, and the ring gear is driven to the wheels. A brake controls the operating state of the second sun gear, a first clutch controls the engagement or disengagement of the engine output end with the first sun gear, and a second clutch controls the engagement or disengagement of the engine output end with the planetary carrier. The technical solution provided in this application solves the problem in related technologies where hybrid power drive devices struggle to simultaneously achieve efficiency and compactness across multiple operating modes, as well as flexible drive switching.

The invention relates to the technical field of knee joint exoskeleton devices, in particular to a clutch control type knee joint exoskeleton damping device and a control method. Comprising a pair of rotating assemblies which are rotationally connected; the pair of leg connecting assemblies are connected with the pair of rotating assemblies correspondingly, and the pair of leg connecting assemblies are used for being connected with the thighs and the shanks on the same side of the user correspondingly; the rotary damper is controllably coupled with the knee joint assembly; the clutch device is arranged between the rotary damper and the knee joint assembly, and the clutch device is used for switching the coupling state of the knee joint assembly and the rotary damper; and the control unit is used for judging a gait cycle phase and a motion mode according to the signal acquired by the detection unit, and controlling the clutch device to switch the coupling state of the knee joint assembly and the rotary damper according to a preset control rule. And the exoskeleton device can intelligently control the clutch device to dynamically adjust the damping state of the knee joint.

The utility model provides a clutch control mechanism of a riding type mini-tiller. The clutch control mechanism of the riding type mini-tiller solves the problem that an existing clutch control mechanism of the riding type mini-tiller is prone to causing abrasion of a clutch disc in a clutch. One end of the pedal rod is rotatably arranged on the mini-tiller through a rotating shaft, one end of the rotating plate is fixedly connected with a shifting fork shaft, the operating handle is arranged on the mini-tiller, the operating handle is connected with the rotating plate through a traction inhaul cable, the traction inhaul cable can drive the rotating plate to swing around the shifting fork shaft when the operating handle is closed, and a pedal plate is arranged on the pedal rod. The foot rest lever is connected with the rotating plate through a flexible connecting structure, and the flexible connecting structure can drive the rotating plate to swing around the shifting fork shaft when the foot rest is treaded. And the intense movement of the foot rest lever / operating handle can be flexibly transmitted to the rotating plate, so that the abrasion of the clutch disc is avoided, and the service life is effectively prolonged.

The invention provides a clutch control method and system, a vehicle and a medium, and belongs to the technical field of vehicle transmission control, and the method comprises the steps that a position deviation value sequence of a clutch is obtained, and the position deviation value sequence comprises a plurality of position deviation values; the position deviation value is equal to the difference value between the target position and the actual position of the clutch; pID control parameters are determined according to the working state of the clutch; performing filtering processing on the position deviation value sequence based on a least square method to obtain a filtering differential term coefficient; obtaining a variable speed integral item coefficient according to the position deviation value sequence, the variable speed integral threshold range and the integral item coefficient; generating a control signal according to a proportional term coefficient, the filtering differential term coefficient and the variable speed integral term coefficient; and the control signal is output to a clutch executing mechanism, and closed-loop control over the position of the clutch is achieved. According to the method, overshoot is remarkably reduced, and the robustness of clutch control is improved.

The utility model discloses a self-locking and unlocking structure of a worm and gear speed reducer. The self-locking and unlocking structure comprises a power on-off control module, a positioning and limiting module, a protection buffering module and a clutch control module. According to the utility model, the device can be ensured not to be easily opened by external force when needing to be kept closed, so that accidents are effectively prevented; a self-locking and unlocking function is added, the device can be unlocked in time when needed, mechanical damage caused by long-time locking of the device is reduced, the overall durability and reliability of the device are improved, the functionality and the integration degree of the device are remarkably improved through the modular design, all the modules perform their own functions and work cooperatively, and the device is convenient to use. The power transmission and cut-off process is optimized, the performance of positioning, limiting, protection and clutch control is greatly enhanced, a solid foundation is laid for stable and reliable operation of the worm and gear speed reducer under various complex working conditions, and the limitation of traditional single-function design is comprehensively exceeded.

The application discloses a kind of electrical equipment performance comprehensive test device, including comprehensive test box and walking base, the top of the walking base is fixedly connected with support, the top of the support is rotatably connected with suspension frame, and the rotating axis of the suspension frame and comprehensive test box is horizontal.The application is provided with support, suspension frame, top protection trigger frame and side protection trigger frame, wherein the comprehensive test box is hung at the free end of the suspension frame, the top of the support is rotatably connected with the suspension frame, the side protection trigger frame is arranged on the two sides of the comprehensive test box, and the top protection trigger frame is arranged on the top, then the clutch control group and the winding buffer are arranged on the support, when the left and right sides or the top of the comprehensive test box is impacted, the suspension frame will swing down to drive the comprehensive test box to buffer subsidence, away from the impact area, the setting has impact displacement self-protection function, which greatly improves the self-protection performance of the comprehensive test box.

A pneumatic clutch control device of a railway vehicle comprises an air supply pipeline and a two-position three-way electromagnetic valve. The air supply pipeline is communicated between a main air reservoir of the railway vehicle air compression system and an air inlet of the pneumatic clutch; two ports of the two-position three-way electromagnetic valve are communicated with the air supply pipeline, and the other port of the two-position three-way electromagnetic valve is introduced into external atmosphere; a pressure switch I is arranged on the air supply pipeline between the two-position three-way electromagnetic valve and the pneumatic clutch; the set value of the pressure switch I is greater than the minimum value of the normal working pressure of the pneumatic clutch; a non-backpressure one-way valve and a pressure stabilizing air cylinder are sequentially arranged on the air supply pipeline between the main air cylinder and the two-position three-way electromagnetic valve; the pressure stabilizing air cylinder is provided with a second pressure switch, and the set value of the second pressure switch is larger than the maximum value of normal working pressure of the pneumatic clutch. And the controller can receive signals of the first pressure switch and the second pressure switch so as to control the two-position three-way electromagnetic valve. The boosting time of the clutch air cavity is shortened, friction plate loss in the boosting process is reduced, and the pressure is more stable when the pneumatic clutch works.

The invention provides an electromagnetic valve control method and device and a vehicle clutch control system, and belongs to the technical field of vehicle clutch control. The method comprises the steps that the target position, the actual position and the target position change rate of a clutch are obtained; based on the position deviation, the actual position, the target position change rate and a preset control strategy, at least two electromagnetic valves with different hole diameters are controlled to execute a first combination action so as to drive a clutch to execute combination or separation operation; the position deviation is equal to the difference value between the actual position and the target position; when it is determined that the position of the clutch is overshoot according to the position deviation, the maximum overshoot amount in the current overshoot event is obtained; determining a second combined action according to the threshold range of the maximum overshoot; and controlling at least two electromagnetic valves with different apertures to execute a second combined action. Overshoot is effectively relieved, and the clutch control precision is improved.

The application discloses an engine cold start system and method based on AMT clutch control and belongs to the technical field of vehicle control systems. The system comprises an engine assembly, an engine electronic control unit ECU, an AMT automatic transmission assembly, an automatic transmission electronic control unit TCU, a clutch assembly and a cold start signal input assembly; the output end of the engine assembly is in transmission connection with the clutch assembly, and the clutch assembly is in transmission connection with the input shaft of the AMT automatic transmission assembly; the engine electronic control unit ECU is electrically connected with the engine assembly and the cold start signal input assembly respectively, and the automatic transmission electronic control unit TCU is electrically connected with the AMT automatic transmission assembly and the clutch assembly respectively; the engine electronic control unit ECU and the automatic transmission electronic control unit TCU exchange messages through the vehicle CAN bus to control the separation of the clutch assembly, reduce the flywheel end load of the engine and realize engine cold start control.

The utility model discloses a miniature intelligent lock clutch mechanism which comprises a fixed base, a movable support, a round handle, a lock cylinder sleeve and a locking assembly, an installation hole is formed in the center of the fixed base, an annular sliding groove is formed in the middle of the fixed base and on the outer side of a lock sleeve hole, the lock sleeve hole is formed in the center of the movable support, the lock cylinder sleeve is inserted into the lock sleeve hole, and the locking assembly is arranged on the round handle. The lower portion of the movable support is fixedly provided with a circular-ring-shaped protruding part, the circular-ring-shaped protruding part is inserted into the circular-ring-shaped sliding groove, the outer edge of the fixed base is sleeved with the circular handle, the circular handle can rotate relative to the fixed base, and the circular handle is connected with the movable support through a fastening screw. According to the miniature intelligent lock clutch mechanism, clutch control over an intelligent lock is achieved, a traditional clutch control thought is broken through, the whole structure is simple and easy to achieve, the manufacturing cost and the fault occurrence rate are reduced, the size of the intelligent lock is reduced on the whole, and the miniature intelligent lock clutch mechanism has a great promoting effect on achieving miniaturization of the intelligent lock.

The utility model discloses a hydraulic clutch control mechanism and a motorcycle, and the hydraulic clutch control mechanism comprises an upper pump, a lower pump, an upper clutch, a lower clutch and a lower clutch, the first end of the upper pump piston is arranged in the cavity, and the second end of the upper pump piston is arranged outside the upper pump; and the handle is rotatably arranged on the upper pump, a receding sinking table is arranged on the handle, and a boss connected with the second end of the piston of the upper pump in a clamped mode is arranged on the receding sinking table. According to the hydraulic clutch control mechanism and the motorcycle, the receding sinking table and the boss are arranged on the handle, the handle, the receding sinking table and the boss drive the upper pump piston to move, the operation mode that a spiral spring pushes the upper pump piston is replaced, and when the upper pump is filled with brake fluid, the upper pump returns through inertia force of a clutch spring and an oil duct; the initial force value and the overall force value can be reduced, and the riding quality and commodity are improved.

Provided is a lock-up clutch control device that suppresses vibration caused by a clearance collision in a drive transmission system by improving hydraulic pressure control of a lock-up clutch when a driving load (road load) is large although an accelerator pedal is in a slow-down state, and the driving load (road load) is not large even if the accelerator pedal is in a slow-down state. The accelerator pedal is further depressed from a state in which the vehicle is decelerated (further depressed). In this lock-up clutch control device, when an accelerator pedal is depressed slowly and a vehicle is traveling at a reduced speed, the hydraulic pressure of a lock-up clutch is lower than the hydraulic pressure when normal lock-up clutch control is performed. As a result, it is possible to suppress vibrations caused by a clearance collision in the drive transmission system when the accelerator pedal is further depressed thereafter.

The invention relates to a force control clutch device and a seat suspension frame, and the force control clutch device comprises a mounting frame which is used for being connected with the bottom of a seat body; the weighing sensor comprises a strain block connecting column; the base frame is used for bearing the weighing sensor; the connecting piece comprises a connecting part and limiting parts, the limiting parts are located at the two ends of the connecting part, and the mounting frame, the weighing sensor and the base frame are connected through the connecting piece; the clutch control part comprises a driving part and a piston rod, the driving part is located at the top end of the piston rod, the piston rod is connected with the strain block connecting column, and the driving part is used for driving the piston rod to ascend or descend so as to control the working state of the weighing sensor. The working state of the weighing sensor can be flexibly controlled, the weighing sensor is prevented from being affected by high-frequency vibration, the service life of the weighing sensor is prolonged, and the damping effect of the seat suspension is improved.

A clutch control device (50) is provided with a release shaft (53) that transmits an input from a clutch actuator (60) and / or a clutch operator to a clutch device (40). The release shaft (53) has: a first release shaft (55) that rotates by receiving an operation force from a driver; a second release shaft (57) that rotates by receiving input from the clutch actuator (60); and a third release shaft (56) having an engagement part (56a) that overlaps the first release shaft (55) and the second release shaft (57) in the axial direction and faces the first release shaft (55) and the second release shaft (57) in the circumferential direction, the engagement part (56a) rotating by receiving the rotation of the first release shaft (55) and the rotation of the second release shaft (57), respectively, thereby operating the clutch device (40). The clutch control device (50) is further provided with a bearing (90) that holds the engagement section (56a).

This application proposes a method, device, vehicle, equipment, and medium for determining the engagement point of a hydraulic clutch, relating to the field of clutch control technology. The method analyzes whether the pressure value change trend during the oil filling process conforms to a preset trend. This preset trend characterizes the pressure value change trend during the oil filling process as the pressure value transitions from a relatively stable rate of increase to a state of continuously increasing rate of increase. Based on this, the inflection point where the pressure value changes from a stable increase to rapid pressure increase is determined throughout the entire oil filling and pressure building process. This inflection point can be considered as the point where the pressure in the hydraulic circuit exhibits a rapid upward trend due to the resistance of the hydraulic clutch's driving end during engagement. The pressure value corresponding to this point can be used as the pressure value of the clutch engagement point. This method eliminates the need to start high-pressure equipment such as motors / engines, allowing operation under low-pressure conditions, reducing influencing factors, and ensuring the stability and accuracy of self-learning.

The application belongs to a P2 architecture commercial vehicle independent hybrid module, characterized by a special-shaped P2 module shell, which is provided with a center cavity, the left side of the center cavity is fixedly connected with a transmission and a dry clutch shell through bolt holes one by bolts, and forms a flywheel cavity, the right side is also connected with an engine shell through bolt holes one by bolts, and forms a wet clutch shell cavity, a motor is arranged in the center cavity, and a flywheel is arranged in the flywheel cavity; a wet clutch shell is fixed in the wet clutch shell cavity through bolt holes three by bolts, a wet clutch cavity is formed between the wet clutch shell and the P2 module shell, and a wet clutch is arranged in the wet clutch cavity. The application realizes the technical requirements of national laws and regulations, greatly reduces the design change and dependence degree of the original power assembly system, reduces the development cycle and cost, has high heat capacity, meets the working condition requirements of heavy load vehicles under severe working conditions, effectively solves the failure of clutch overheating, and has high clutch control precision and good gear shifting consistency.

The embodiment of the application provides a clutch control method, an electronic device, a storage medium and a program product of a vehicle, relates to the technical field of clutch control, and the method comprises the following steps: acquiring working condition monitoring data of the vehicle when the vehicle is in a pure motor driving starting state; calculating total input torque required by a gearbox input end according to the working condition monitoring data; in the case that the total input torque exceeds the maximum torque that can be provided by the motor to the gearbox, calculating a first torque that needs to be input to the gearbox by the clutch; calculating a required position of the clutch based on a first mapping relationship between the required position of the clutch and the compression force of the clutch and a second mapping relationship between the compression force of the clutch and the first torque; and controlling the clutch according to a position error between the required position and the actual position of the clutch. The embodiment of the application can adapt to various starting working conditions, effectively supplement the gap of motor power, and improves the power performance of the pure electric starting of the hybrid vehicle.

This application discloses a drive device and system for an electric door. The drive device includes a drive unit and a clutch unit. The drive unit has an output shaft, and the clutch unit includes a clutch body and a clutch control assembly. The first end of the clutch body is engaged with the output shaft and disengaged from it. The second end of the clutch body is driven by the electric door. The clutch control assembly is connected to the clutch body and includes a control knob. When the control knob is in a first state, the first end of the clutch body is engaged with the output shaft. When the control knob is rotated to a second state, the first end of the clutch body is disengaged from the output shaft, thereby cutting off the power transmission between the drive unit and the electric door. The opening or closing process of the electric door is no longer constrained by the drive unit, and the electric door can be opened or closed manually.

Control unit (1) for an automated manual transmission and at least one clutch (2, 3) connecting the manual transmission to a drive train of a motor vehicle, wherein a fluid for cooling the clutch (2, 3) can be supplied to the clutch (2, 3) via at least one clutch cooling valve (4) connected to the clutch (2, 3) of the control unit (1), wherein the control unit (1) has at least one control valve (5) which is connected to at least one electric machine (6) that can be connected to the drive train of the motor vehicle for supplying the fluid, characterized in that a storage charging valve (10) is connected upstream of the control valve (5), by means of which fluid at the storage charging valve (10) under a boost pressure is supplied to the control valve (5) and / or a high-pressure storage tank (11).

The utility model discloses a clutch control structure of a mechanical clutch transmission shaft, which comprises a control arm rotationally connected to a shell, a spring connecting end is arranged on the control arm, a control spring positioned on the outer side of the control arm is fixedly connected between the spring connecting end and the shell, the control arm comprises a rotary connecting end, and the rotary connecting end is fixedly connected with the control spring. According to the clutch transmission shaft structure, the spring is arranged outside the control arm, so that the overall thickness formed by the shell and the control arm is reduced, the overall thickness of the clutch transmission shaft structure is smaller, space occupation is reduced, and the clutch transmission shaft structure is more convenient to use. Meanwhile, the size of the spring is not limited by the internal space of the control arm any more, the spring with the larger size can be adopted, meanwhile, the larger external installation space also avoids abrasion between the spring and the control arm in the using process, and the service life of the spring is prolonged.

This utility model discloses a linkage assembly machine, including an assembly machine and a lifting mechanism. The lifting mechanism includes a base plate fixedly connected to the bottom of the assembly machine. A limit frame is fixedly connected to the bottom of the base plate. A housing is slidably connected to the surface of the limit frame. A limit bracket is fixedly connected to the bottom of the inner wall of the housing. A lifting plate is slidably connected to the surface of the limit bracket. The surface of the lifting plate is fixedly connected to the inner wall of the limit frame. A screw is movably connected to the inner wall of the limit bracket via a bearing. The bottom end of the screw is movably connected to the bottom of the inner wall of the housing via a bearing. In use, this utility model, under the action of the lifting mechanism, the tilting protection mechanism, the drive mechanism, and the clutch control mechanism, can provide shielding protection for the linkage assembly machine and quickly adjust its operating height, avoiding the inconvenience caused by the linkage assembly machine being easily damaged by bumps and the inability to adjust the operating height, thus giving it the advantage of ease of use.

This invention provides an adaptive regulating valve assembly and a clutch control device and vehicle having the same. The adaptive regulating valve assembly includes: a housing having a receiving cavity, the side wall of which has an oil inlet channel and an oil return channel, both communicating with the receiving cavity; and a valve core assembly disposed within the receiving cavity, one end of which has multiple communicating oil passages, and the other end of which has a braking cavity containing a braking component. A heat exchange cavity is formed between the outer surface of the braking cavity and the receiving cavity, where the oil in the heat exchange cavity exchanges heat with the braking component, causing at least one of the valve core assembly and the braking component to deform and drive at least a portion of the valve core assembly to move relative to the oil inlet channel to a preset position. The preset positions are multiple, and when the valve core assembly is at any one of the preset positions, at least one communicating oil passage is connected to the oil inlet channel. This solution solves the technical problem of high power consumption of the electronic pump when the oil temperature rises in the prior art.

The application discloses a method for adjusting engine accessory torque and related devices. First, the output torque value of the engine is determined based on the running state of the engine at the current time. Then, the accessory torque value of the engine is adjusted based on the correlation between the running state of the engine and the output torque value and the output torque value of the engine, so that the accuracy of clutch control can be ensured.

The present disclosure is enclosed in the area of levers for vehicles such as bicycles, tricycles, motorcycles, snowmobiles or snow motorcycles. More particularly, the present disclosure relates to a highly resistant finger or hand lever (10) suitable for use on a manual brake or clutch control lever assembly of such vehicles. In an embodiment, the finger or hand lever (10) comprises a metallic core (11) and a polymeric cover (12), the metallic core (11) extending along the lever (10) and the polymeric cover (12) at least partially covering the metallic core (11), the lever (10) comprising a working portion (21) suitable for a user to provide more than one finger and a coupling portion (22) suitable for coupling to a corresponding section of a manual brake or clutch control lever assembly of the vehicle.

The application discloses a self-walking device for train detection and an obstacle avoidance method thereof, adopts at most one driving motor and at least three telescopic motors as driving, controls three pairs of wheel groups to pass through obstacles at rail waist, and based on twice obstacle detection, makes the identification and obstacle avoidance of the trolley more accurate and fast. In addition, the self-walking trolley adopts at least three pairs of wheel groups, at least two groups of which are controlled by a clutch to switch transmission, so that the trolley has only one pair of wheel groups as driving wheels at the same time, the trolley can be positioned and walked by using the space at the rail waist, does not invade the vehicle gauge, does not affect the normal operation of the train, and realizes train detection when the train is running. Further, through the design of grooves, linear guides and rotating modules, the component scanning camera can perform mobile image acquisition work, obtain a larger acquisition range, have stronger adaptability to narrow spaces, and the practicality is effectively improved.

The invention discloses a large-torque compact hydraulic damping clutch and a clutch control system and method.The clutch comprises a damping machine shell, the first side of the damping machine shell is used for being in driving connection with a gearbox, and a damping cavity is formed in the damping machine shell; the power transmission shaft is rotationally assembled on the damping machine shell and used for being in driving connection with an engine, and a main damping gear is fixed to the end, extending into the damping cavity, of the power transmission shaft; and the multiple sets of parallel damping gears surround the main damping gear and are meshed with the main damping gear, and the parallel damping gears are rotationally assembled on the damping machine shell. Damping force is formed in a hydraulic damping mode to achieve switching of a linkage state or a clutch state, surface contact abrasion caused by relative friction cannot be generated, meanwhile, high-pressure damping oil can serve as a heat dissipation medium, uniform and efficient heat dissipation can be achieved in the vehicle running process, the maintenance period is longer, and the cost is lower.

To improve hydraulic pressure control of a lockup clutch so as to suppress vibration caused by backlash of a drive transmission system when further depression (additional depression) of an accelerator pedal is performed in a state where, although the accelerator pedal is gently depressed, a traveling load (road load) is large and a vehicle is traveling in a decelerating manner.SOLUTION: In a lockup clutch control device, in a state where a vehicle is traveling in a decelerating manner although an accelerator pedal is gently depressed, hydraulic pressure of a lockup clutch is set lower than hydraulic pressure when normal lockup clutch control is performed. Thereby, it is possible to suppress vibration caused by backlash of a drive transmission system when further depression of the accelerator pedal is subsequently performed.SELECTED DRAWING: Figure 6

The utility model provides a wheeled tractor clutch control mechanism which comprises a fixed seat, a connecting seat is welded on the side of the fixed seat, a mounting block is welded on the connecting seat, a threaded hole is formed in the mounting block, a rotating column is rotatably mounted in the fixed seat, a transmission rod is fixed on the rotating column, and the transmission rod is connected with the connecting seat. A pedal is fixed to one end of the transmission rod, a fixing frame is welded to the bottom of the fixing base, and an operation shaft is fixedly installed at the bottom of the fixing frame and fixed to the bottom of the fixing frame through a nut. When the wheeled tractor clutch control mechanism is used, a threaded column rotates to push a limiting frame to move outwards in a fixing frame, after the limiting frame moves outwards, the limiting frame is pushed to move through downward inclination force of a transmission rod, and when the limiting frame moves, a supporting cylinder pushes a cable to move secondarily; therefore, secondary pulling of the tightness of the cable is completed, and the situation that the cable is too loose and cannot drive equipment to move is avoided.

The present application relates to a chain type window opener with clutch control device, the chain type window opener makes the clutch groove of the driving gear pushed by the spring and the clutch block of the driven gear abut, so that the driving gear and the driven gear keep linkage in normal state, in normal state, the linkage window opener is opened and closed by the motor in the window opener, when manual opening and closing of the window sash is needed, press the control button, push the clutch plate down, push the driving gear away from the driven gear to release the linkage and maintain the current state, at this time the motor will not be loaded, the window sash can be conveniently opened and closed, convenient for emergency escape, through safety, and keep the clutch state by pressing the locking mechanism, improve the use experience, and set the anti-bending mechanism on the chain, set the chain head assembly to ensure that the chain will not be bent when supporting the window sash, improve the wind resistance and bending resistance, adjust the lifting height of the force applying plate, so that it can always maintain the strength of the chain, improve the adaptability.