48 results about "Yaw damper" patented technology

The invention relates to a heating control method of an air conditioner. The method comprises the following steps of powering on the air conditioner, and entering a heating mode; adopting an outdoor machine to detect an outdoor ambient temperature T3, and adopting an indoor machine to detect an indoor ambient temperature T1; enabling an air damper and an air guide angle of the indoor machine to be operated according to the setting of a user or to be operated according to a preset value, and enabling the air damper and the air guide angle of the indoor machine to be operated in priority according to a cold-air preventing mode if the cold-air preventing mode is needed; enabling an indoor fan to enter a high-air running mode if T3A is more than T3 and T1 is more than T1A, and adopting a cold-air preventing angle mode for an air guide angle of the indoor fan; withdrawing from the high-air running mode, and enabling the air conditioner to run the air damper according to a normal cold-air preventing mode; and enabling the air conditioner to enter a set air mode according to the normal cold-air preventing mode if T3 is less than T3A and T1 is more than T1A. By adjusting the operation mode of the air conditioner, the thickness of an oil membrane of a running part of a compressor can be efficiently increased, the thickness and viscosity of the oil membrane of the air conditioner under a worst working condition can be guaranteed, the reliability of the compressor is improved, and the operation reliability of the air conditioner can be guaranteed.

The invention relates to a control equipment for a vehicle. In an embodiment method of the invention, when returning from the neutral control, an air damper is slowly opened unrelated to the rolling reduction of the accelerator pedal by drivers from the return of the neutral control after the delayed time, thereby restraining the early increase of the motor torque. Besides, the braking pressure is smoothly released from the neutral control return after the delayed time. By the method, the environment (opening of the air damper, braking pressure) returning from the neutral control is suitably set considering the joint of the forward clutch, thereby restraining the impact when returning from the neutral control.

A switching gas damper for low-voltage power circuit breakers, is arranged as an attachment above the arcing chambers for additional damping, deionization and cooling of the switching gases. The switching gas damper includes a cuboid enclosure with separate inlet openings to receive switching gas flows from each arcing chamber in the low-voltage power circuit breaker. Separate outlet channels are formed by channel walls and / or by deflection elements and are routed on both sides of the power circuit breaker. A variable arrangement of the deflection elements and outlet channels makes it possible to produce a number of mutually separate flow paths, with different desired damping and cooling characteristics, as a function of the gas amounts that occur and of the characteristics of the arcing chambers that are used.

An electronic lead / lag damper algorithm implemented as part of the fly-by-wire flight control system to minimize or eliminate mechanical lead / lag dampers of a rotary wing aircraft. The electronic lead / lag damper algorithm uses a cross-feed control methodology that band-pass filters pitch and roll rates and feeds back a signal to the lateral and longitudinal cyclic inputs to provide electronic stability to rotor lag modes.

An alternative system for damping the dutch roll mode in an aircraft is provided using roll control surfaces. Classical yaw dampers for the dutch roll mode utilize the yaw control surfaces such as a rudder to dampen the dutch roll mode oscillations. An alternative damper is described that utilizes roll control surfaces such as spoilers or ailerons to dampen the dutch roll mode.

A one-way damper includes a cylindrical housing, a viscous fluid contained within the housing, a rotor rotatably disposed in the housing, and a valve body. The rotor has a center part for forming a rotational center, and a control wall extending radially outwardly from the center part for dividing an inside of the housing. The control wall has a distribution path. The valve body has a holding part for holding the center part, and a free edge part extending from one side of the holding part for opening-and closing the distribution path. A seal member prevents the viscous fluid from leaking between the housing and the rotor.

An alternative system for damping the dutch roll mode in an aircraft is provided using roll control surfaces. Classical yaw dampers for the dutch roll mode utilize the yaw control surfaces such as a rudder to dampen the dutch roll mode oscillations. An alternative damper is described that utilizes roll control surfaces such as spoilers or ailerons to dampen the dutch roll mode.

A novel non-power bogie assembly of a motor train unit with the speed per hour of 250 km / h is characterized in that each anti-yaw damper seat is provided with a single anti-yaw damper interface, and each of secondary vertical damper seats and anti-side-rolling torsion bar installation seats on the outer sides of framework side beams is of a cylinder nut structure; a bogie and a train body are connected through a connecting sleeper beam, the anti-yaw damper seats and the anti-side-rolling torsion bar installation seats are arranged on the connecting sleeper beam and connected with the sleeper beam through bolts, and train body apron plate lifting point grooves are designed in the two sides of the connecting sleeper beam; carbon dust collection cavities are formed in ground terminals, shaftend transitional covers and shaft box end front covers are attached and firmly connected, traveling speed sensors are in an ATP / LKJ mode, and each shaft end is of a four-hole installation movable plate structure. The structure of the bogie is simplified, so that application, maintenance and overhauling are convenient, component modularized design is achieved, and product applicability is improved;and through application of an EN standard and a motor train unit actual measurement load spectrum optimization structure, the reliability of key parts is improved.

The embodiment of the invention provides a control method and system of an anti-yaw damper. The method comprises the following steps of acquiring a head swinging speed of a rail vehicle framework anda stretching speed of the anti-yaw damper; judging whether the swinging direction corresponding to the head swinging speed and the stretching direction corresponding to the stretching speed are in thesame direction or opposite directions so as to obtain a judgment result; and adjusting the damping force of the anti-yaw damper according to the judgment result. According to the control method and system, the damping force of the anti-yaw damper is adjusted in real time according to the swinging direction and the stretching direction, carriage wheels with different abrasion states can be met, the stationarity requirements of the vehicle at the high speed are met, and the requirements of rapid, safe and comfortable in rail transit transportation are met.

The invention discloses a variable damping anti-yaw damper control system. According to the interactive relationship between a speed signal judgment module, a solenoid valve opening and closing signaljudgment module, a framework vibration signal judgment module, a body vibration signal judgment module and a solenoid valve power supply driving module, the running quality of a motor train unit is judged in real time, damping parameters of a variable damping anti-yaw damper are regulated in real time, so that the motor train unit provided with the control system can adapt to change of wheel-railmatching equivalent taper under different line conditions and in different wheel wear periods, vehicle dynamics performances are improved, wheel turning repair cycle is prolonged, unnecessary line grinding operation is reduced, and a control method is simple and reliable.

An air damper (52) includes a main housing (54) having an interior wall defining an inner chamber (56), a piston (58) disposed within the inner chamber, and an arch-shaped gasket member (30) connected to the piston. The arch-shaped gasket member includes an annular rim (38) that sealingly engages the interior wall of the housing.

A system and method for air distribution in an air conditioning system of a motor vehicle, the system including flow paths with air outlets toward the windshield, in the dashboard, and toward the footwell, along with a central gear mechanism having an adjustment element and damper controls for air dampers, for the purpose of opening and closing the air outlets. The adjustment element is arranged to be steplessly movable between a first end position and a second end position. With the system, in particular by moving the adjustment element, the settings “windshield damper open”, “footwell damper open” and “dashboard damper open” may be selected. The central gear mechanism having the adjustment element and the damper controls is configured such that the “windshield damper open” setting may be selected at either of the end positions of the adjustment element.

The invention discloses a vehicle lifting pin base of a railway vehicle, and a using method for the vehicle lifting pin base, and belongs to the field of railway vehicles, and the vehicle lifting pin base realizes vehicle lifting operation and vehicle dropping operation without dismounting an anti-yaw damper base. The vehicle lifting pin base comprises a pedestal, a regulating wedge, a plug pin, a handle and a buckle plate, wherein the width and the height of the pedestal are separately smaller than the width and the height of a vehicle lifting hole; the length of the pedestal is greater than the thickness of the vehicle lifting hole; the two ends in a length direction of the pedestal are separately an inner end and an outer end; the inner end is provided with a pin hole in a width direction; a pin matched with the pin hole is arranged in the pin hole; the bottom surface of the outer end is provided with the buckle plate capable of being buckled on a vehicle lifting arm; the part, before the buckle plate, of the lower surface of the pedestal is upward in the shape of step; the length of a transverse step surface adjacent to the buckle plate is equal to the thickness of the vehicle lifting hole; the position, close to the outer end, of the upper surface of the pedestal is of an inclined surface which is thinned outwards; the regulating wedge is arranged on the inclined surface; and the two adjacent surfaces of the regulating wedge and the inclined surface are separately distributed with saw teeth which are matched. By virtue of the vehicle lifting pin base, the vehicle lifting operation and the vehicle dropping operation are safe, efficient, convenient and quick.

The invention discloses a main blade connecting arm for a test table. The main blade connecting arm is divided into two parts including a connection arm (1) and a blade mounting pin. The connecting arm (1) is provided with a propeller hub mounting hole, a blade mounting hole and a yaw damper mounting hole. The blade mounting pin includes a shaft (2), a brake pin (201), a brake block (202), a spring (203), a slide block (204), a pin (205). According to the invention, a new blade can be mounted on a prior propeller hub in a transitional manner and no re-design of the propeller hub is needed. Therefore, time for refitting a rotor wing system of a blade dynamic balance test table can be saved by half.

The invention provides an air damper. The air damper comprises a cylinder body; a pressing cover I and a pressing cover II are respectively fixed on two ends of the cylinder body; a layer of elastic parts is fixed at one side of each of the pressing cover I and the pressing cover II, in the cylinder body; a piston for moving by reciprocating along the wall of the cylinder is arranged between the two layers of elastic parts, wherein the piston is fixed to one end of a piston rod; the other end of the piston rod extends out from the pressing cover; a plurality of air slots are integrally fixed on the piston rod; an air inlet and an air outlet are fixed in the other side of the pressing cover II; filtering devices for filtering air are arranged on the air inlet and the air outlet; a cooling barrel sleeves the cylinder body; the air inlet and the air outlet of the cooling barrel are communicated with an automobile cooling circulating system. The air damper has the advantages of being simple in structure, high in safety, matching with the cooling circulating system of an automobile, and being low in cost, good in damping effect, and convenient to operate.

The invention discloses a cold air guide channel of a tunnel type mesh belt instant freezer. The cold air guide channel is used for conveying cold air discharged by each air cooling fan to a mesh belt, and consists of an air damper system installed in a heat preservation chamber body, wherein the air damper system comprises two side baffle plates, air dampers and an air guide plate; the air guide plates are transversely paved in the heat preservation chamber body; the two side baffle plates are respectively connected with two sides of the air guide plate; the air dampers are respectively an arc-shaped air damper; each air cooling fan is provided with one arc-shaped air damper; the arc-shaped indent surface of each of the arc-shaped air dampers is arranged in a way of being opposite to the air outlet of the corresponding air cooling fan; the end faces, located on the upper side, of the arc-shaped air dampers respectively contact with the top of the heat preservation chamber body; the end faces, located on the lower side, of the arc-shaped air dampers are supported on the air guide plate through a support, or are respectively connected with the baffle plates on two sides. Therefore, by the adoption of the cold air guide channel, the turbulence and the mutual interference of cold air circulation are reduced; the recycling circulation of cold air is improved; therefore, the freezing effect of the instant freezer is further improved.

A rotorcraft rotor fitted with a device for damping lead-lag oscillations of the blades (2) of the rotor. The blades (2) are hinge-mounted on a rotary hub (1) of the rotor via respective sleeves (3). The damper device comprises a set of dampers (6), each individually housed in a respective one of said sleeves (3) and deformable between two fastening points (8, 9), one with the sleeve and the other with an engagement member (7) for engaging the hub (1) via a linkage (10). For each of the sleeve (3), the damper (6) housed by a given sleeve (3) is in hinged engagement with the linkage (10) via a lever arm (11) hinged to the sleeve (3).

The invention relates to a tool for assembling a yaw damper of a bogie. The tool comprises a base plate seat, wherein the base plate seat is provided with a locating block and a locating support, the locating block corresponds to a base plate groove of the yaw damper, the outer side surface of the locating support is provided with a fixing nut, a lead screw is arranged in the fixing nut, a locating pin is arranged at the front end of the lead screw and is matched with a locating hole of a yaw damper torsion rod, the back end of the lead screw is connected with a handle, the top of the locating support is provided with a limiting groove for limiting the end of the yaw damper torsion rod, and the inner side of the locating support is provided with magnetic sheets for respectively adsorbing the yaw damper torsion rod, a vertical plate and left and right side plates. According to the tool for assembling the yaw damper of the bogie, disclosed by the invention, the magnetic sheets replace the traditional lead screw to clamp the tool, and a jack-out demoulding method of a central locating pin is additionally provided so that a problem that a tool with the abnormal appearance is unlikely to be clamped is smartly solved, the self size and the clamping complexity of the tool are largely reduced, and the manufacturing cost of the tool is saved; and meanwhile, the clamping time of tool assembly by labors is largely shortened and the production efficiency is improved.

The invention provides a method and device for controlling an air damper. After it is judged that an engine is in an intermediate-high load operation state, when the engine gets into a fuel cut condition, the air damper opening degree set value is obtained by inquiring a preset table according to current boost pressure and current rotating sped, the closing position of the air damper is adjusted and controlled in time according to the air damper opening degree set value, a relatively airtight space is not formed between the air damper and a booster any more, and the phenomenon of surge of thebooster is avoided.

The invention provides a two-way damper. The two-way damper comprises a cylinder body, and further comprises two piston rods arranged at the two ends of the cylinder body correspondingly, elastic diaphragms which are arranged between floating pistons on the two sides and oppositely fixed to the interior of the cylinder body and fixed pistons which are located between the elastic diaphragms on thetwo sides and fixed to the interior of the cylinder body; one end of each piston rod is inserted into the cylinder body through a sealing mechanism in a guiding mode, the inserting end of each pistonrod is provided with the corresponding floating piston sliding in the cylinder body, and each floating piston is provided with a first damping channel communicating with the two sides of the floatingpiston; the elastic diaphragms isolate the portions, on the two sides of the elastic diaphragms, of the space in the cylinder body; a second damping channel communicating with the two sides of the fixed piston is formed in each fixed piston; and the portions, on the two sides of the elastic diaphragms, of the cylinder body are filled with damping liquid. According to the two-way damper, the damperstructure can be simplified, the cost is reduced, and the good practicability is achieved.

An alternative system for damping the dutch roll mode in an aircraft is provided using roll control surfaces. Classical yaw dampers for the dutch roll mode utilize the yaw control surfaces such as a rudder to dampen the dutch roll mode oscillations. An alternative damper is described that utilizes roll control surfaces such as spoilers or ailerons to dampen the dutch roll mode.

The invention discloses detaching and mounting methods for a braking air damper of a hydraulic generator. The two methods both use a detaching device, the detaching device comprises a support frame, a lifting frame, a pushing table, a first hand-pull hoist and a second hand-pull hoist, wherein the support frame plays a role of integral supporting, the first hand-pull hoist controls the lifting frame to be lifted, and further the pushing table and the braking air damper are driven to be lifted. Therefore, the problem of difficulty in hoisting of the current braking air damper is effectively solved, manpower, material resources and time are saved, and the detaching and mounting efficiency is effectively improved.

The present invention relates to an air damper for a vehicle, and more specifically, the invention enables: cover caps, which are divided into two sides, to be integrally injection-molded in an opening portion of a housing; and said cover caps to be coupled with each other to support a piston rod by shielding the opening portion after a piston has been assembled, thereby reducing the number of components and shortening assembling and operating time. The invention provides an air damper (50), in which: a piston (20) is inserted into a housing (10); and a cap (4) is inserted into a piston rod (21) such that the cap is penetrated therethrough whereby an opening portion of the housing (10) is assembled in a covered state, wherein cover caps (15), which are integrally injection-molded with a body on the opening portion of said housing (10), are divided into two sides in connection with the housing (10) by a hinge portion (14) such that the cover caps are assembled to enclose the inserted piston rod (21). Further, said cover caps (15) are inserted to surface contact with the inside diameter of the housing (10), and fixed protrusions (16) are formed on both ends of the cover caps (15) such that the fixed protrusions are inserted into fixed holes (11) equipped on the housing (10).; In addition, said cover caps (15) are divided into two sides and are assembled to be overlapped with each other on the front part of the opening portion, so that the fixed protrusions (16) and the fixed holes (11) mutually equipped on the front part of the body are coupled and assembled together, and then a protruded surface (17) is formed on the outer surface of the cover caps (15) while a position-fixing groove (12) is formed in the opening portion of the housing (10), whereby the protruded surface (17) is inserted and assembled into the position-fixing groove (12).

An alternative system for damping the dutch roll mode in an aircraft is provided using roll control surfaces. Classical yaw dampers for the dutch roll mode utilize the yaw control surfaces such as a rudder to dampen the dutch roll mode oscillations. An alternative damper is described that utilizes roll control surfaces such as spoilers or ailerons to dampen the dutch roll mode.

The invention relates to the field of vehicle variable gauges, and provides a variable gauge bogie frame and a variable gauge bogie, wherein side beams are arranged in parallel, and the cross beams are connected between the side beams and arranged in parallel; brake clamp locking seats are respectively arranged on the inner side of each side beam and on the outer sides of the pair of cross beams;the brake clamp locking seat is of a box-shaped structure; an upper top plate of the side beam extends inwards to form an upper cover plate of the brake clamp locking seat, and a side plate of the brake clamp locking seat is welded with the bottom plate and then welded with the upper cover plate to form the box-shaped structure; active anti-yaw damper mounting bases are arranged at the two ends ofone cross beam and located on the outer sides of the side beams correspondingly. By redesigning the structure of the framework, the installation requirements of a variable gauge wheel set can be met.

The invention discloses a clamping weighing device for a car damper. A weighing device is arranged on a railway rail of a car inlet end of the car damper; the weighing device comprises a platform, a pressure sensor, a clamping device, a cross pulling device and a longitudinal pulling device; a walking rail is placed on ail beams of the platform, and the pressure sensor is mounted between the lower side of the platform and a supporting pier in a foundation pit; the clamping device is installed at one end of the platform; the cross pulling device comprises two groups of pulling mechanisms, wherein every group of pulling mechanism comprises a threaded pull rod, a base and an adjusting nut, and the base is installed above the supporting pier in the foundation pit; one end of the threaded pull rod is connected with the base, and the other end is hinged to two rail beams on the platform; the longitudinal pulling device has the same structure as the cross pulling device; two groups of the longitudinal pulling mechanisms are symmetrically arranged at both sides of the rail beams. The clamping weighing device has the beneficial effects of realizing multi-sectional positioning weighing function, improving running efficiency, and reducing investment; the clamping weighing device is compact in structure, light in weight, low in cost and convenient to maintain; besides, the clamping weighing device is exact in location and high in level of automation.

An improved method and apparatus for determining the amount of turn coordination gain in an aircraft yaw damper during a turn maneuver is disclosed. The yaw damper includes inputs from the inertial reference units of the aircraft and also from the flight management computer of the aircraft. The flight management computer provides to the yaw damper a signal indicative of the position of the flaps of the aircraft. The yaw damper includes a turn coordination gain box that receives the flap position signal and outputs a turn coordination gain value, dependent upon the flap position. Generally, the turn coordination gain value increases as the flap position is more extended. The precise turn coordination gain value for each flap position is dependent upon the particular aerodynamic characteristics of the aircraft.