116 results about "Swashplate" patented technology

The invention relates to the technical field of orchard automatic navigation deviation correction, in particular to an automatic navigation deviation correction system for an orchard track power platform. Comprising a chassis, a vehicle control unit, a navigation system vehicle-mounted computer, a laser radar, a navigation control box, a navigation antenna, a steering motor, a differential planetary mechanism, a rotating speed sensor, an edge architecture control box, a driving wheel assembly, a servo valve and a steering pump. The mode that the whole vehicle controller regulates and controls the servo valve to conduct deviation rectification is adopted, the deviation rectification response speed is high, the control precision is high, the high-speed operation working condition of the orchard power platform can be adapted, and the operation efficiency is improved; the swash plate plunger steering pump is adopted to drive the steering motor, the driving power is small, the heat balance stability is good, and the cost is low; the differential steering mechanism is adopted as a deviation rectifying executing mechanism, the transmission efficiency of the power platform is not affected, the steering line type is controllable, steering is stable, the overcorrection phenomenon is effectively avoided, the automatic navigation operation precision is effectively improved, and the automatic navigation deviation rectifying stability of the orchard power platform is improved.

Steering gear (10) for a surgical instrument (52), wherein the steering gear (10) has a gear housing (12) and an interface (14) for coupling with a surgical instrument (52), wherein the interface (14) is designed such that the surgical instrument (52) can be coupled to the steering gear (10) in a direction (S) perpendicular to the longitudinal axis (L) of the steering gear (10), the interface (14) includes: a housing area (16) of the gearbox housing (12) which is designed for coupling with a housing (54) of the surgical instrument (52), and a steering clamp (18) for actuating a steering device (54) of the surgical instrument (52), wherein the steering clamp (18) can be coupled to a swashplate (60) of the steering device (54) of the surgical instrument (52) via the interface (14).

This invention discloses a closed-loop hydraulic piston pump with high variable response speed and its usage method. The variable system of the piston pump consists of a control valve and a variable mechanism. The variable mechanism includes a variable cylinder (10), a variable piston (11) is provided inside the variable cylinder (10), the middle part of the variable piston (11) is connected to the swashplate (40) of the piston pump, and both ends of the variable piston (11) form variable chambers (12). Both ends of the variable piston (11) are provided with copper rings (13), which are located between the variable piston (11) and the variable cylinder (10). The variable cylinder (10) supports and seals the variable piston (11) through the copper rings (13), and the copper rings (13) are clearance-fitted with the variable piston (11). This invention has the advantage of fast variable response speed.

This invention discloses a swashplate-based lapping device for lapping a swashplate and a swashplate base. The bottom surface of the swashplate has a first arc-shaped curved surface, and the top surface of the swashplate base has a second arc-shaped curved surface that mates with the first arc-shaped curved surface. The device includes: a drive component for driving the swashplate to reciprocate on the swashplate base; a support assembly for supporting the drive component; and a base assembly for fixing the swashplate base. This invention ensures close contact between the swashplate and the swashplate base, resulting in more uniform pressure contact on the arc surface. It solves the problem of uneven force distribution and difficulty in ensuring contour accuracy caused by manual operation, greatly improving machining accuracy and efficiency. Furthermore, this structure converts rotary motion into reciprocating linear motion, making operation more convenient.

A swivel angle measuring device is configured to indirectly sense a swivel angle of a swashplate or cylinder drum of an axial piston machine. The swivel angle is adjustable using an adjustment piston guided in an adjustment cylinder. The swivel angle measuring device includes a movable encoder and a transducer affixed to a housing. The encoder is formed by two permanent magnets that are carried linearly and translationally by the adjustment piston along its direction of movement and that have a distance to one other.

The invention provides a fixed clearance return stroke type high-speed axial plunger pump, and relates to the field of axial plunger pumps, the fixed clearance return stroke type high-speed axial plunger pump comprises a shell and a main shaft capable of rotating in the shell, the main shaft drives a cylinder body and an impeller to rotate, an axial channel is arranged in the cylinder body, a pre-tightening spring is arranged in the axial channel and provides pre-tightening force for a return stroke disc, and a plunger body can reciprocate in the axial direction. The end part of the plunger body is matched with the sliding shoe to slide on the swash plate, and a return stroke assembly is further arranged and comprises a return stroke plate, a fixed gap pressing plate and a fixing device; the return plate is limited between the fixed-gap pressing plate and the sliding shoe and arranged with the fixed-gap pressing plate in a spaced mode, and the fixing device is used for fixing the fixed-gap pressing plate to the swash plate. The return stroke assembly with the fixed gap is adopted, the problem that the sliding shoe excessively inclines and even disengages in the return stroke process is avoided, meanwhile, the return stroke disc utilizes the pre-tightening force of the center spring, and it is ensured that the sliding shoe is flexibly attached to and sealed with the swash plate under the low-speed working condition; the fixed gap pressing plate balances the centrifugal overturning moment of the sliding shoe through physical limiting under the high-speed working condition.

A flight control structure of a flying toy comprises a base, a shell and a flight structure, the base and the shell are connected to form an inner cavity, one end of the flight structure is arranged in the inner cavity and connected with the shell, the other end of the flight structure penetrates through the shell, the flight structure comprises a flight rotor assembly, a posture assembly and a battery control assembly, and the battery control assembly is fixed to the base and connected with the shell. One end of the flight rotor assembly penetrates through the shell, and the attitude assembly is connected with the flight rotor assembly and drives the flight rotor assembly to deflect and rotate. The independent posture assembly is arranged to drive the flying rotor wing assembly to deflect, the mode that in a traditional scheme, the posture is controlled through the rotor wing rotating speed difference or a complex swash plate mechanism is replaced, and the problems that due to the fact that the rotor wing rotating speed difference is adjusted, a fuselage shakes, and energy consumption is increased are solved; meanwhile, complex structures such as a multi-layer swash plate and a connecting rod do not need to be adopted, so that the overall structure is simplified, and the manufacturing process difficulty and cost are reduced.

This invention discloses a method for designing the additional angle of the swashplate in a constant pressure variable displacement piston pump, comprising the following steps: A. When the additional angle β is 0, based on the inlet pressure P of the variable displacement pump... 始 Constant pressure P 终 Given the maximum swashplate angle α, determine the compression angle B. Based on equations 1 and 2), calculate the corresponding additional angle β at the maximum swashplate angle α. Then, using equation 3), calculate the angle C between the z-axis and the low-pressure zone oil window of the distributor plate. Calculate the curves showing the volume ratio changing with the additional angle β at different swashplate angles α. The intersection of these curves represents the optimal design value for the additional angle β under different operating conditions. This invention enables the variable pump to minimize pressure pulsation under any operating condition, thereby improving the performance of the constant pressure variable piston pump and the reliability and lifespan of the onboard hydraulic system.

A device to verify main rotor swashplate positioning includes an inner surface of a first section and a gradient surface of a second section. The gradient surface of the second section may have a plurality of graduation indications. In one implementation, the inner surface of the first section at least partially defines a travel arc that is parallel to and concentric with the inner surface. In such an implementation, the device may be configured to move along the travel arc as it rotates about a collective sleeve to contact a swashplate lug.

This application relates to the field of control technology, specifically to a control method, device, system, and electronic equipment for a closed-loop pump swashplate. The method includes: acquiring real-time gas input pressure and gas output pressure from the gas input and gas output ends of a hydraulic cylinder; determining corresponding analog output values ​​based on the real-time acquired gas input and gas output pressures, and generating a control signal based on the determined analog output values; and controlling the opening degree of the swashplate of the closed-loop pump, which is connected to the hydraulic cylinder via a pipeline, according to the control signal, so that the number of strokes per minute of the hydraulic cylinder is within a preset range. The embodiments of this application contribute to achieving precise control of the swashplate opening of a closed-loop pump.

This invention discloses a pitch angle adjustment system and method based on a twin model of a helicopter main rotor system. The pitch angle adjustment system based on the twin model of a helicopter main rotor system includes: a main rotor structure; a twin model establishment module, the twin model including a model main rotor hub, a model swashplate, a model main reducer, and multiple model rotor arms corresponding to the main rotor structure; a robot simulation module; multiple measuring fixtures, which are respectively installed on multiple rotor arms of the main rotor structure; and a laser tracker, which is suitable for detecting the multiple measuring fixtures to determine the position and attitude of the multiple rotor arms. The pitch angle adjustment system based on the twin model of a helicopter main rotor system according to the embodiments of this invention has the advantages of high automation, high adjustment efficiency, and strong applicability.

A vertical take-off and landing aircraft includes a primary rotor unit having a rotor axis, an upper rotor system, and a lower rotor system. The upper rotor system includes an upper swashplate configured to translate along the rotor axis and not configured to tilt relative to the rotor axis and a pair of top blades configured to rotate about the rotor axis. Translation of the upper swashplate causes a pitch of each of the top blades to change equally. The lower rotor system includes a lower swashplate configured to translate along the rotor axis and not configured to tilt relative to the rotor axis and a pair of bottom blades configured to rotate about the rotor axis. Translation of the lower swashplate causes a pitch of each of the bottom blades to change equally. The aircraft further includes a plurality of secondary rotors each having fixed-pitch rotor blades.

A shoe for use with a hydraulic piston motor or pump is disclosed herein. The shoe includes an upper portion configured to receive the hydraulic piston, a lower portion configured to contact a swashplate, a counterbore formed in the lower portion, a vertical channel extending through the upper portion and the lower portion into the counterbore, and a seal disposed within the counterbore and extending around a circumference of the counterbore.

The invention discloses a digital axial plunger pump / motor, and belongs to the field of hydraulic elements. The device comprises a fixed cylinder body, a transmission shaft, an inner ring swash plate, an outer ring swash plate and a plunger assembly, the cylinder body is provided with double rows of plunger cavities, and the transmission shaft is supported in the center of the cylinder body through a bearing. The inner ring swash plate and the outer ring swash plate are rigidly connected with the shaft, working face contours of the swash plates are symmetrical curved surfaces and provided with guide grooves, the plungers are arranged in plunger cavities, reset springs are arranged at the front ends of the plungers, guide balls are arranged at the tail ends of the plungers, and the guide balls are in rolling contact with the swash plate guide grooves. When the pump is used, the transmission shaft drives the swash plate to rotate, the plunger moves linearly in a reciprocating mode through the curved surface profile, and the single plunger completes two times of oil discharge and two times of oil suction every time the swash plate rotates by a circle. When used as a motor, the digital valve system controls high-pressure oil to enter the plunger cavities to push the plungers, the balls roll along the curved surface of the swash plate to convert linear motion into continuous rotation of the swash plate and the transmission shaft, the single plunger completes two times of oil inlet and two times of oil return every time the single plunger rotates, and efficient conversion is achieved.

Steering gear (10) for a surgical instrument (70), wherein the steering gear (10) has a gearbox housing (12) and an interface (14) for coupling with a surgical instrument (70), wherein the interface (14) is designed such that the surgical instrument (70) can be coupled to the steering gear (10) in a direction (S) perpendicular to the longitudinal axis (L) of the steering gear (10), the interface (14) includes: a housing area (16) of the gearbox housing (12) designed for coupling with a housing (72) of the surgical instrument (70), and a rotatably mounted steering fork (18) for actuating a steering device (74) of the surgical instrument (70), wherein the rotatably mounted steering fork (18) can be coupled to a swashplate (78) of the steering device (74) of the surgical instrument (70) via the interface (14).

The invention relates to a hydraulic control circuit (11) for a fan blade pitch control actuator (14) of a turbojet engine, comprising an oil reservoir (17), an axial piston pump (18) having a tilting swashplate (23) and a control chamber (24) and a compensation chamber (27) to increase the tilt of the swashplate (23) when the pressurization of these chambers increases, the pump (18) being supplied by the reservoir (17) and having its outlet configured to be connected by a supply line (19) to one of the chambers (12, 13) of the pitch control actuator (14), the other chamber of the pitch control actuator (14) being connected to the reservoir (17), this control circuit comprising a valve (42) controlled by a computer (FADEC) allowing the outlet of the pump (18) to be connected to the reservoir (17) in order to deactivate this pump (18). Figure for the abbreviation: Figure 2

The utility model discloses a closed hydraulic plunger pump with high variable response speed, a variable system of the plunger pump is composed of a control valve and a variable mechanism, the variable mechanism comprises a variable cylinder (10), a variable piston (11) is arranged in the variable cylinder (10), the middle of the variable piston (11) is connected with a swash plate (40) of the plunger pump, variable cavities (12) are formed at two ends of the variable piston (11), and the variable piston (11) is connected with the swash plate (40) of the plunger pump. Copper rings (13) are arranged at the two ends of the variable piston (11), the copper rings (13) are located between the variable piston (11) and the variable cylinder (10), the variable cylinder (10) supports and seals the variable piston (11) through the copper rings (13), and the copper rings (13) are in clearance fit with the variable piston (11). The utility model has the advantage of fast variable response speed.

The present invention provides a swash plate 21 for a hybrid air vehicle 100 able to transition between rotary-wing and fixed-wing flight modes, the swash plate 21 comprising: a frame 211 arranged to

This utility model relates to the field of compressor technology, and in particular to an oil return structure for an aluminum swashplate type large displacement compressor, comprising: a compression working assembly including a rotating shaft with an oil outlet channel along its length, and multiple oil outlet holes on its outer wall communicating with the oil outlet channel; a cylinder body with a working chamber in the middle, fitted onto the compression working assembly, with the rotating shaft passing through the cylinder body; an oil storage pool on one side of the cylinder body; and end caps, one on each of the two end faces of the cylinder body; wherein the cylinder body is divided into a first oil return section and a second oil return section; the first oil return section has a first oil return hole channel communicating from the joint surface between the first oil return section and the end cap to the working chamber; the second oil return section has a second oil return hole channel communicating from the joint surface between the second oil return section and the end cap to the oil storage pool. This utility model effectively improves the oil circulation effect within the compressor, enhances the lubrication effect, and improves the oil return function.

The invention relates to a mixer device for superimposing and transmitting cyclic control inputs and collective control inputs from both a pilot and a co-pilot to a swashplate of a rotary-wing aircraft, comprising a unit with a first mixer shaft (1) and a second mixer shaft (3), wherein the unit is connected to the swashplate on its output side by control rods (5) and is connected to a respective control stick (7) of the pilot and the co-pilot on its input side by control rods (9), and wherein the second mixer shaft (3) is torque-fixedly connected to a respective collective lever (11) for the pilot and the co-pilot,such that pivoting of one of the collective levers (11) leads to a rotation of the second mixer shaft (3) and the rotation of the second mixer shaft (3) in turn leads to both a synchronous pivoting of the other of the collective levers (11) and a displacement of the swash plate.

A hydrostatic axial piston machine with an adjustable displacement volume and with a fixed high-pressure side (14) and a fixed low-pressure side (16) is disclosed, and with a rotatably mounted cylinder drum (12) with cylinder bores (34) and axially displaceable working pistons (36) therein, which define hydrostatic working chambers (38) that can be brought into alternating contact with the high-pressure side (14) and the low-pressure side (16) when the cylinder drum (12) is rotated, wherein the working pistons (36) are slidably supported by sliding shoes (40) on a swashplate (42) of an adjustable pivoting cradle (6), which is pivotably mounted on a high-pressure-side first sliding bearing (30) with a first hydrostatic relief pressure field and on a low-pressure-side second sliding bearing with a second hydrostatic relief pressure field.wherein the first hydrostatic relief pressure field can be brought into pulsating pressure medium contact with the high-pressure side (14) via a first tapping channel (48) penetrating the pivot cradle (6) with a first opening (50; 150) in a high-pressure-side half-surface (52) of the inclined disk (42), as well as a sliding shoe opening (58) of the sliding shoe (40), which sweeps over the first opening (50; 150).

The application discloses a variable-pitch structure and a control method for a single-layer variable-pitch coaxial double-propeller unmanned aerial vehicle, relates to the technical field of variable-pitch control of coaxial double-propeller unmanned aerial vehicles, and comprises an active single-layer variable-pitch mechanism and a passive single-layer variable-pitch mechanism. When the single-layer variable-pitch coaxial double-propeller unmanned aerial vehicle needs to move horizontally, the active variable-pitch propeller layer is driven by the rotating swash plate mechanism to actively change the pitch, thereby generating a horizontal moment; the passive variable-pitch propeller layer is passively tilted under the action of aerodynamic force to generate a horizontal moment, the fixed propeller hub connection structure of the original passive variable-pitch propeller layer is changed, the passive single-layer variable-pitch mechanism is adopted, a passive variable-pitch propeller hub and a pair of propeller hub movable pins are added, the propeller hub movable pin is arranged at an angle of 45 degrees or 135 degrees with the propeller hub axis, so that the propeller hub movable pin also changes the pitch periodically under the action of aerodynamic force, the reaction moment caused by the gyroscopic effect during high-speed flight is reduced, and the unmanned aerial vehicle has better controllability and flight stability.

This utility model relates to a spoke stress-dispersing impact-resistant electric vehicle wheel hub, belonging to the field of electric vehicle wheel hub technology. It includes an electric vehicle wheel hub body and a protective cover detachably connected to the outside of the wheel hub body. The protective cover has an air-blowing structure extending into it for heat dissipation, and an exhaust structure that works in conjunction with the air-blowing structure. A transmission structure is provided outside both the air-blowing and exhaust structures. The air-blowing structure includes a nozzle fixedly connected to the bottom of the protective cover. This spoke stress-dispersing impact-resistant electric vehicle wheel hub, through a connecting shaft rotating with the wheel hub body, drives a swashplate to rotate, pushing a first stopper plate to slide up and down reciprocally. Air is drawn in and blown out through the nozzle in conjunction with a return spring. Simultaneously, a fixed disc rotates, and a gravity block pulls a sliding sleeve up and down, pushing a second stopper plate to expel hot air, improving heat dissipation efficiency and reducing wheel hub deformation and braking performance degradation caused by high temperatures.

An axial variable displacement piston pump includes a drive shaft disposed on an axis, a piston barrel comprising a plurality of pistons disposed about the drive shaft, and a swash plate disposed about the drive shaft. Each of the piston barrel and the swash plate are rotationally coupled to the drive shaft such that the drive shaft is configured to simultaneously drive rotation of each of the piston barrel and the swash plate.

This invention relates to the field of bidirectional swashplate electric compressor technology, and more particularly to a bidirectional swashplate electric compressor, comprising a body, a drive motor mounted outside the body, a motor shaft within the drive motor, steel ball slide shoes slidably mounted within the body, a rotating shaft fixedly connected to one end of the motor shaft, a swashplate integrally formed on the rotating shaft, an oil reservoir for storing lubricating oil installed within the body, a bearing fitted onto the motor shaft within the oil reservoir, and a circulation mechanism within the body for driving the circulation of lubricating oil in the oil reservoir. This invention causes a first piston to reciprocate left and right, drawing cryogenic refrigerant into the first cylinder for compression. During transport, the cryogenic refrigerant passes through a second connecting pipe and an annular pipe. Furthermore, during the compression process, the cryogenic refrigerant cools the drive motor and lubricating oil, preventing them from operating at high temperatures and affecting their service life, while simultaneously improving the utilization rate of the cryogenic refrigerant.

The invention relates to a gear pump assembly (1), in particular a gear pump assembly (1) of an axial piston machine in swashplate design, wherein the gear pump assembly (1) comprises a gear assembly (2) configured to convey hydraulic fluid from a suction side to a delivery side, wherein the gear assembly (2) is arranged in a housing recess (3) of a housing (4) of the gear pump assembly (1) and is fixed axially in the housing recess (3) by means of a cover (16) that closes the housing recess (3), wherein a compensating element (20) is arranged between the gear assembly (2) and the cover (16). The compensating element (20) is designed as a plastically deformable ring element (30) which is plastically deformable during the assembly process of the cover (16) on the housing (4).

A force-balanced swashplate plunger pump includes a hollow pump body with one open end. An end cap is installed at the open end of the pump body, and an inlet and outlet are spaced apart at the closed end, communicating with its internal cavity. A main shaft, with one end extending into the pump body cavity, is rotatably connected to the end cap. One end of the main shaft, located within the pump body, is eccentrically connected to a swashplate, with one end slidingly engaged with the closed end of the pump body and the other end inclined. The swashplate has a small head on the side closer to the main shaft and a large head on the other side. A balancing groove is provided on the outer circumference of the large head of the swashplate, aligning the center of mass of the swashplate with the axis of the main shaft. An annular boss, movably fitted onto the main shaft, is provided inside the end cap. An upper sliding plate, coaxially fitted onto the main shaft, is located between the annular boss and the swashplate. One end of the upper sliding plate is universally engaged with the annular boss, and the other end is slidably engaged with the inclined end of the swashplate. This invention avoids the rotational movement of the plunger following the rotor assembly in the prior art, eliminating lateral forces.

This invention relates to the field of polishing tool technology, specifically a lightweight, digitally adjustable brushless electric polishing tool. It includes a motor body, which consists of a main body and a top-mounted conversion housing, integrating a power supply module, a control module, and a drive module. The drive module includes a brushless motor fixedly mounted on the top of the main body. This invention utilizes a swashplate mounted at an angle α to the output shaft. When the brushless motor drives the swashplate to rotate, each fan blade rotates around its own axis, drawing air from the bottom of the main body and simultaneously expelling it towards the rear and front vents. This forms a directional, forced cooling airflow covering multiple circumferential areas inside the motor body, solving the problem of existing technologies that rely solely on a rotor shaft fan along the motor axis to create a single cooling path, failing to provide differentiated cooling for the temperature distribution in different circumferential areas of the motor. This effectively avoids the accumulation of localized hot spots and improves the overall heat dissipation uniformity and thermal management capabilities.

Axial piston compressor (10) for compressing gases, comprising: one or more pistons (20), a cylinder block (18) having a number of recesses, in particular cylinder bores (22), corresponding to the number of pistons (20) in the compressor, a drive shaft (16) having a central axis (17), and a swashplate or swash device (24) which is inclined to the central axis (17) of the drive shaft and with which the one or more pistons (20) are in operative engagement, wherein one or more radial bearings, at least one of which is designed as a radial tapered roller bearing (28, 30), are arranged between the drive shaft (16) and the swashplate or swash device (24).

The invention relates to the technical field of hydraulic transmission, and discloses a ball cage type fluid end assembly which comprises a shell, a liquid inlet pipe, a connecting seat, a plurality of liquid outlet channels and plunger bodies. A containing cavity is defined in the shell, the top end of the containing cavity communicates with the liquid inlet pipe, a connecting seat is fixedly connected to one side of the containing cavity, and the connecting seat is internally provided with the liquid outlet channels in the circumferential direction around the center, and the plunger bodies are connected into the liquid outlet channels in a sliding mode. The swash plate and the connecting base are oppositely arranged, a supporting plate is rotationally connected to the side, close to the connecting base, of the swash plate, a hydraulic balance assembly is arranged between the swash plate and the supporting plate, and the supporting plate is configured to sequentially act on the plunger bodies in the clockwise / anticlockwise direction so that the plunger bodies can reciprocate in the liquid outlet channel; the driving rod is rotationally connected to one side of the containing cavity and fixedly connected with the swash plate, a sealing seat is fixedly connected into the shell, the end, extending into the containing cavity, of the driving rod penetrates through the sealing seat, the driving rod is in sealed connection with the sealing seat, and a buffering assembly is arranged on the side, connected with the swash plate, of the sealing seat. The vibration force generated during hydraulic pumping can be effectively absorbed, and the influence of floating motion on a pump structure is reduced.