1904results about "Fluid-pressure actuators" patented technology

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, and the high mechanical stability of the water-cooled magnet is improved.

An aircraft wing includes a fixed structure and a linear hydraulic slat actuator attached to the fixed structure. The linear hydraulic slat actuator is oriented spanwise along the aircraft wing. The aircraft wing also includes an actuator output link and a slat attached to the actuator output link. The aircraft wing also includes a bell-crank coupled to the linear hydraulic slat actuator and to the actuator output link. In response to spanwise movement of the linear hydraulic slat actuator, the bell-crank is configured to move the actuator output link in a different direction that enables the slat to move between a retracted position and an extended position.

A modular hydraulically-adjustable preload and / or cross-over system. The system includes a housing configured to couple with a main damper cylinder, the housing including a slave cylinder within a portion of a slave cylinder chamber, the slave cylinder telescopically movable with respect to the housing; a fluid chamber; and a fluid port configured to provide a fluid flow for the fluid chamber, wherein an increase in a fluid volume within the fluid chamber causes a portion of the slave cylinder to telescopically extend from the slave cylinder chamber. A preload flange coupled with the slave cylinder at an end of the housing such that a change in a location of the slave cylinder causes a change in a location of the preload flange.

A device (1) for holding and / or moving a rod-shaped body (2) is proposed, comprising: a fully enclosed housing (3) with a longitudinal axis (L) along which the rod-shaped body (2) is guided or is to be guided; a thrust piston (4) surrounding the rod-shaped body (2), which can be subjected to a first pressure from the outside via a first pressure port (L) through the housing (3) and which can be subjected to a second pressure from the outside via a second pressure port (K) through the housing (3), and which has a first effective surface (5) and a second effective surface (6), which effective surfaces (5, 6) preferably extend in a radial direction, wherein the first effective surface (5) is in fluidic operative connection with the first pressure port (L) and the second effective surface (6) is in fluidic operative connection with the second pressure port (K), wherein the thrust piston (4) has a radially internal recess (7) through which a circumferential free space (8) is formed between the rod-shaped body (2) and an inner surface (9) of the thrust piston (4), which free space (8) has an axial limit (10, 11) on both sides; and at least one clamping sleeve (12) which, with its inner surface (13), defines a central cylindrical area through which the rod-shaped body (2) is guided or can be guided, and which is received in the aforementioned free space (8), extending axially between the two axial limits (10, 11), wherein the clamping sleeve (12) can be subjected to a third pressure from the outside via a third pressure port (V) through the force-pull piston (4) and is designed to deform itself reversibly radially inwards according to the third pressure and to exert a holding force on the rod-shaped body (2).

The invention belongs to the technical field of engineering hydraulic oil cylinders, and particularly relates to a hydraulic oil cylinder with a filtering mechanism for reducing pollutant accumulation. An air inlet pipe is directly connected with an external cold air source, cold air can be directly diffused in a device box and wraps a hydraulic oil cylinder body, and meanwhile a motor drives fan blades to rotate through a third rotating shaft; according to the oil cylinder cooling device, flowing of cold air in the device box body can be accelerated, the heat dissipation effect of the oil cylinder can be enhanced, heat accumulation caused by local retention of the cold air can be avoided, meanwhile, suspended dust generated by cleaning of the cleaning brush, small impurities which are not settled in the cold air and falling objects in the using process of the cleaning brush can be sucked, and the cleaning effect is improved. And the cleaning rod rotates under the rotation of the third rotating shaft, so that the impurities blocked by the second filter screen are cleaned, and the impurities enter a first collecting box through a connecting pipe.

The invention relates to the technical field of hydraulic cylinders, and particularly discloses a double-seal adjustable hydraulic oil cylinder leakage-proof mechanism and a hydraulic oil cylinder thereof.The double-seal adjustable hydraulic oil cylinder leakage-proof mechanism comprises a cylinder barrel, a piston rod is slidably arranged in the cylinder barrel, a sleeve shell is arranged in the cylinder barrel, the outer surface wall of the piston rod is sleeved with the sleeve shell, and a first sealing ring is arranged in the sleeve shell; the outer surface wall of the piston rod is sleeved with the first sealing ring, multiple sets of adjusting screw rods are rotationally arranged at the upper end of the sleeve shell, the end, away from the sleeve shell, of each set of adjusting screw rod is in threaded connection with the cylinder barrel, multiple sets of sealing assemblies are arranged at the upper end of the cylinder barrel, and each set of sealing assemblies is matched with the corresponding adjusting screw rod; and a second sealing ring and a third sealing ring are embedded in the cylinder barrel. The maintenance difficulty is reduced, equipment does not need to be disassembled, slight leakage of hydraulic oil caused by long-time telescopic movement can be rapidly eliminated, the sealing performance of the hydraulic oil cylinder is improved, and meanwhile the maintenance cost is reduced.

An adjustable wear block for a mast system can include a housing and a wear pad arranged on an adjustable base within the wear block housing. In one embodiment, the wear block, wear pad, and adjustable base all have a circular cross-section. Threading on the outside of the base can match threading on an inner wall of the housing. As the base is rotated within the housing, the position of the base and the attached wear pad can be adjusted with respect to the housing. A hole can be provided through a channel or mast wall to permit an adjustment tool to be used to adjust the position of the base with respect to the housing after the wear block is secured to the carriage or mast. In an alternate embodiment, a hydraulic piston can drive the position of the wear pad with respect to the wear block housing.

The anti-deflection air cylinder comprises a cylinder body, a piston, a piston rod and a sleeve seat, the cylinder body is provided with a containing cavity with an opening in one end, the piston is arranged in the containing cavity, one end of the piston rod is fixedly connected with the piston, the piston rod extends out of the cylinder body from the opening of the containing cavity, and a limiting groove extending in the axial direction of the piston rod is formed in the outer wall of the piston rod; a sealing ring is fixed in the open end of the cylinder body, the piston rod extends out of a ring opening of the sealing ring, a sealing block matched with the limiting groove is arranged on the inner wall of the ring opening of the sealing ring and clamped into the limiting groove, and the sleeve seat is fixed to the outer wall of the open end of the cylinder body and provided with a sleeve hole matched with the diameter of the piston rod. The piston rod penetrates out of the sleeve seat from the sleeve hole, the outer wall of the piston rod is attached to the inner wall of the sleeve hole, a hard clamping block matched with the limiting groove is fixed to the position, in the sleeve hole, of the sleeve seat, the hard clamping block is clamped into the limiting groove, the piston rod can stably move and accurately linearly move, and installation in a narrow space is facilitated.

A refuse vehicle includes a vehicle body on a chassis having a frame, an internal combustion engine (ICE), and a transmission coupling the ICE with a plurality of tractive elements. The vehicle body includes an electrically powered body system and a hydraulically powered body system. A first power module is coupled with the ICE and is configured to provide rotary power to a hydraulic pump that is configured to provide hydraulic power to the hydraulically powered body system. A second power module is coupled with the transmission and configured to rotationally couple and decouple an electrical generator with the transmission. The generator is configured to charge at least one battery when rotationally coupled with the transmission. The battery is configured to provide electrical power to the electrically powered body system.

The utility model discloses a pressure boosting device suitable for a hydraulic fracturing crustal stress test, which is sequentially connected with an upper rubber plug and a lower rubber plug of a crustal stress test device through a push-pull pressure relief conversion device, and comprises a pressure boosting cylinder body, a first pressure relief device, a second pressure relief device and a pressure relief device, the second inner cavity is sequentially connected with the upper rubber plug and the lower rubber plug through a push-pull pressure relief conversion device, an exhaust hole communicated with the first inner cavity is formed in the side wall of the pressure boosting cylinder body, and a water inlet and outlet hole communicated with the second inner cavity is further formed in the side wall of the pressure boosting cylinder body. The low-pressure piston is movably arranged in the first inner cavity, the high-pressure piston is movably arranged in the second inner cavity, and the force transmission column is connected with the low-pressure piston and the high-pressure piston. According to the utility model, the limited pressure in the coring drill rod can be increased to the test pressure required by the crustal stress test, so that the equipment loss risk during the crustal stress test is greatly reduced.

The anti-collision adjustable buffering oil cylinder comprises a cylinder body, a piston rod is slidably connected into the cylinder body, a mounting base is fixedly mounted at the end of the cylinder body, a sealing sleeve is fixedly mounted on the side, away from the mounting base, of the cylinder body, and the end of the piston rod penetrates through the sealing sleeve; according to the technical scheme, through the inner buffering mechanisms at the two ends in the cylinder body, a buffering bearing ring, an inner buffering spring and an inner damper are used for cooperative buffering, rigid impact of the piston plate is avoided, the structure is protected, and the service life of the piston plate is prolonged. The problems of part damage, shortened service life and faults caused by too large pressure difference are solved, meanwhile, the outer buffering mechanism outside the cylinder body counteracts impact energy and blocks impurities through an outer anti-collision plate, an outer buffering spring and an outer damper, the position can be flexibly adjusted, the impact resistance and protection effect can be improved, and the problem that external protection is lacked is solved.

The invention provides a pneumatic driving part and a pneumatic valve, and relates to the technical field of valve control. The pneumatic driving piece comprises a front cover, a rear cover, a cavity and a piston piece; the first end of the cavity is connected with the front cover, the second end of the cavity is connected with the rear cover, the piston piece is arranged in the cavity, and the cavity is divided into a first inner cavity corresponding to the front cover and a second inner cavity corresponding to the rear cover based on a piston head of the piston piece; the piston piece is used for moving based on the pressure difference between the first inner cavity and the second inner cavity; the front cover is provided with a first one-way sealing piece, and the first one-way sealing piece is used for buffering the moving tail end, moving in the first direction, of the piston piece. The rear cover is provided with a second one-way sealing piece, and the second one-way sealing piece is used for buffering the moving tail end, moving in the second direction, of the piston piece. The first direction is the direction from the rear cover to the front cover, and the second direction is the direction from the front cover to the rear cover. And the movement tail ends of the piston piece in different directions can be buffered, and impact caused by inertia is effectively reduced.

The invention discloses a die-casting die oil cylinder piston rod with a built-in high-pressure air cooling channel, relates to the technical field of automobile non-ferrous metal casting, and aims to solve the technical problem that high-temperature transmission in the piston rod is difficult to solve fundamentally by adopting an external cooling mode. One end of the piston rod body is connected with a driving end connector, the other end of the piston rod body is connected with a tail barrel, the air inlet end of the tail barrel is connected with a vortex cooling pipe, a control frame is arranged on the side of the tail barrel, and an inner cavity of the piston rod body is provided with a direction adjusting unit and an airflow channel. A transfer groove, a plurality of cylinder direction cooling channels and a plurality of die direction cooling channels are formed in an inner cavity of the driving end connector, the direction adjusting unit comprises an adjusting block arranged in the transfer groove in a sliding mode, the side wall of the adjusting block is connected with an adjusting rod, and a driving piece is arranged at the end of the adjusting rod. The piston rod has the advantages that air cooling is conducted on the interior of the piston rod body, and secondary heat exchange is achieved through residual cooling capacity of cold air flow.

The invention relates to the field of fluid control devices in semiconductor liquid paths, and provides a precise control on-off valve for a semiconductor liquid path and an assembling method thereof, and the precise control on-off valve comprises a valve seat, a cylinder assembly combined on the valve seat, a diaphragm valve plate accommodated in the valve seat, and an adjusting wheel arranged on an upper cover of the cylinder. The air cylinder assembly comprises an air cylinder upper cover and an air cylinder body which are connected through a rotary lock catch structure, and a piston assembly and a limiting rod set are assembled in the air cylinder assembly. And the diaphragm valve plate is driven by the cylinder assembly to seal or separate from the valve port of the valve seat. The adjusting wheel is connected with the limiting rod set and used for adjusting lifting of the limiting lead screw, and then the maximum upward moving position of the piston assembly and the opening degree of the valve are precisely limited. The valve breaks through the bottleneck that a traditional mechanical valve is prone to abrasion and leakage, achieves the effect of precise fine adjustment of flow, and meanwhile greatly improves the flow stability of long-term operation and the clean safety of an ultra-pure fluid system.

The utility model provides a piston type air cylinder with a control valve, a clamping mechanism and tool equipment, the air cylinder comprises an air cylinder body and the control valve, the air cylinder body is provided with a cavity, the cavity is internally connected with an air cylinder piston in a sliding mode, and the cavity is divided into an upper cavity body and a lower cavity body by the air cylinder piston; the control valve is used for controlling the air source to drive the air cylinder piston to reciprocate in the cavity in the direction of the upper cavity and the direction of the lower cavity. Wherein the control valve is installed on the air cylinder body, or the control valve is arranged close to the air cylinder body and is connected with the air cylinder body through a pipeline. By stripping the valve plate from the valve terminal, moving the valve plate to the position close to the air cylinder body or installing the valve plate on the air cylinder body, the integrated effect that the air cylinder and the control valve are integrally arranged is achieved, and therefore the action time of the air cylinder is shortened, the industrial production rhythm is prevented from being affected, redundant loss generated in the process that an air source is conveyed into the air cylinder body is avoided, and cost is reduced.

This invention relates to the field of booms, and discloses a rotary drive mechanism, a boom, and engineering machinery. The rotary drive mechanism includes an annular piston (10) and a stator. The annular piston (10) is provided with piston teeth having protruding curved tooth surfaces and piston teeth having inclined flat tooth surfaces. The stator is provided with stator teeth having protruding curved tooth surfaces and stator teeth having inclined flat tooth surfaces. The annular piston (10) can be driven to move axially relative to the stator. Through the above-described technical solution, the combination of the meshing of curved tooth surfaces and the meshing of flat tooth surfaces can ensure smooth transmission in the initial meshing stage, reduce noise, and allow the subsequent meshing stage to convert axial movement into uniform rotation, providing a more stable torque output.

The invention relates to the technical field of assembly equipment, in particular to a drive control device of a press-fitting machine, which comprises a workbench and a rack, the rack is provided with a control part, the control part is provided with an angle adjusting part, the angle adjusting part is provided with a press-fitting part, the press-fitting part is provided with a compensation part, and the angle adjusting part is provided with a supporting part. A control cabinet, a control panel, a double-shaft displacement sliding table and a feeding table are arranged on the workbench, the press-fitting part comprises a positioning disc, a cylinder barrel is fixedly connected to the positioning disc, one end of the cylinder barrel is slidably connected with a press-fitting head, a compensation pipe of the compensation part is adopted for balancing air pressure fluctuation in the press-fitting process from high-speed feeding to low-speed press-fitting in real time, and the situation that press-fitting is not firm, and the press-fitting quality is affected is avoided. The air suction pipe can supplement air quickly, the structure is simplified, pressure maintaining is stable, angle change is self-adapted, uninterrupted air transmission is guaranteed, impact force is flexibly buffered and absorbed, and deviation caused by dimensional tolerance is reduced.

The invention discloses a slewing mechanism capable of precisely adjusting a gear clearance and having a self-locking function and a using method, the slewing mechanism comprises a rotary table, a slewing bearing, a slewing motor, a slewing motor mounting seat and an angle sensor, a bulge is arranged on the slewing motor mounting seat, a limiting block is arranged on the rotary table, and a wedge-shaped plate is arranged between the limiting block and the bulge; the wedge-shaped plate is provided with an unthreaded hole and a threaded hole which are used for placing the adjusting bolt, and the angle sensor is used for detecting the rotation gap angle. The wedge-shaped plate is arranged between the rotary motor mounting base and the rotary table, the center distance is adjusted through the wedge-shaped block, clearance change of gears of the rotary mechanism is achieved, related faults of rotary shaking or large rotary clearance can be effectively solved, and the workload of replacing a rotary bearing or a rotary motor is greatly reduced; and the center distance is precisely adjusted by adjusting the bolts on the wedge-shaped plates, precise regulation and control of the gear clearance are achieved, and the equipment reliability and the production efficiency are greatly improved.

The invention discloses a telescopic seatpost system comprising means to lock the position of the seat (S) in predefined positions in response to the pulsation of a button by the cyclist, without the need for the cyclist to keep said button (41) pushed during the time the telescopic mechanism (2) supporting the seat (S) is compressing or extending.

The present disclosure relates to a battery electric dump truck, comprising a frame, a dump body pivotably mounted on the frame, a power unit comprising a battery, the power unit providing electrical energy to at least one electrical propulsion motor of the battery electric dump truck, and a radiator unit, wherein the radiator unit comprises two radiator columns spaced apart from each other, with an installation opening for the power unit being arranged between the radiator columns.

The utility model relates to the technical field of hydraulic cylinders, in particular to a sealed multi-stage hydraulic cylinder which comprises a first telescopic pipe, a second telescopic pipe, a bolt, a magnet and an extension part. The top end of the first telescopic pipe extends from the top end of the cylinder barrel of the hydraulic cylinder to the moving direction of a piston rod of the hydraulic cylinder in the height direction of the hydraulic cylinder. The second telescopic pipe is arranged on the inner side of the first telescopic pipe and connected to the end of a piston rod of the hydraulic cylinder in a sleeving mode. The telescopic pipes are connected in a sleeved mode, so that the two telescopic rods respectively protect one piston rod of the hydraulic cylinder, the piston rod of the hydraulic cylinder is protected in a segmented mode, meanwhile, the inner side space of the first telescopic pipe is enlarged through the extending part, the first telescopic pipe is made to avoid a connector of the hydraulic cylinder when stretching out and drawing back, and the hydraulic cylinder is protected. And the two telescopic rods are matched to integrally protect the piston rod of the hydraulic cylinder.

A lift device and a method of controlling the lift device are provided. The lift device has a lifting mechanism supporting a lifting platform relative to the chassis. An electric motor is drivingly coupled to a traction device, and a traction battery is in electrical communication with the electric motor. A user input is provided to control a speed of the lift device by inputting a requested speed. A controller is configured to, in response to the lift device being on a non-zero grade and if the requested speed is greater than a predetermined speed, command the electric motor to output a braking torque and provide electrical power to the traction battery, and limit the speed of the lift device to the predetermined speed.

The utility model relates to the field of oil cylinder jackets, and discloses a continuous mining machine cutting oil cylinder jacket device which comprises a jacket body, a connecting assembly is arranged at the end of the jacket body, a plurality of sets of connecting holes are formed in the upper end and the lower end of the jacket body, the connecting assembly comprises a connecting block, the connecting block is inserted into the jacket body, and the connecting block is connected with the jacket body. Inserting rods are inserted into the upper end and the lower end of the connecting block, clamping blocks are fixedly connected to the lower portions of the outer arc faces of the inserting rods, and torsion blocks are fixedly connected to the upper surfaces of the inserting rods. According to the utility model, through the arrangement of the torsion block, the connecting block, the sealing gasket, the inserting rod, the clamping block, the step groove, the annular groove and the clamping groove, when the device is mounted on the outer side of the oil cylinder, the proper sheath length can be freely combined in a splicing manner, so that the device is suitable for oil cylinders with different models and use requirements, and when any part of the sheath is damaged, the device is convenient to use. The damaged part can be conveniently dismounted and replaced, and the cost loss caused by replacing the whole sheath is avoided.

The invention relates to a rear cover assembly structure and method for a line control brake system and a master cylinder assembly. The rear cover assembling structure comprises a main cylinder, a rear cover and a steel wire clamping ring. A main cylinder hole is formed in one end of the main cylinder, the inner diameter of the main cylinder hole is gradually reduced from outside to inside, and a first annular groove is concavely formed in the inner side wall of the main cylinder hole; the rear cover is embedded in the main cylinder hole, and the outer side wall of the rear cover is matched with the inner side wall of the main cylinder hole; a second annular groove and a mounting groove are further formed in the outer side wall of the rear cover, and the mounting groove is used for mounting an O-shaped ring. A main cylinder and a rear cover are fixed through a steel wire clamping ring, a first annular groove is formed in a cylinder hole of the main cylinder, a second annular groove is synchronously formed in the outer circle of the rear cover, after assembly, one part of the steel wire clamping ring can be clamped in the first annular groove of the cylinder hole of the main cylinder, and the other part of the steel wire clamping ring can be clamped in the second annular groove in the outer circle of the rear cover. And the axial fixation between the rear cover and the main cylinder is realized.

A grabber assembly for attachment to an item of equipment is provided that is able to effectively grab irregularly shaped objects. The grabber assembly includes: a jaw assembly, comprising: upper and lower jaw members configurable to move toward and away from each other to grab and release objects; a first plurality of grabbing teeth, attached to the upper jaw member; and a second plurality of grabbing teeth, attached to the lower jaw member. Each of the first plurality of grabbing teeth and each of the second plurality of grabbing teeth is able to pivot or rotate independently of other grabbing teeth.

The utility model discloses a locking hydraulic oil cylinder with controllable extrusion depth, which relates to the technical field of hydraulic oil cylinders and comprises an oil cylinder, an adjusting bin, an adjusting block and a threaded rod, an oil outlet is arranged on one side of the top of the oil cylinder and communicated with the inside of the oil cylinder, and an oil inlet is arranged on one side of the bottom of the oil cylinder and communicated with the inside of the oil cylinder. The oil inlet is communicated with the interior of the oil cylinder, a piston is arranged in the oil cylinder, the second gear is driven to rotate by rotating the rotary knob, and then the two first gears meshed with the second gear are driven to rotate synchronously. When the first gear rotates, the two threaded rods connected with the first gear are driven to rotate, and the rotation of the threaded rods further drives the adjusting block to move in the axial direction; in the sliding process of the piston, the rod body drives the limiting block to move synchronously, and the adjusting block can limit the stroke of the limiting block; when the limiting block is in contact with the adjusting block, the piston stops moving, so that accurate limiting of the stroke of the piston is realized, and the extrusion depth of the other end of the rod body is accurately controlled.

The utility model provides a separated electric-hydraulic pusher, and belongs to the technical field of electric-hydraulic pushers. The separated electric-hydraulic pusher comprises a connecting assembly and a protection assembly, a motor is arranged on one side of an oil tank, two first telescopic hoses are both communicated with the oil tank, firstly, the oil tank and the motor are separated from a cylinder body and a push rod, and when the cylinder body and the push rod are damaged, only the cylinder body and the push rod need to be replaced; the components such as the oil tank and the motor which are inconvenient to disassemble and maintain do not need to be treated, disassembly, maintenance and replacement are more convenient than before, and the on-site working requirements can be completely met; further, dust is prevented from being attached to the outer wall after the push rod extends and being brought into the cylinder body when the push rod is retracted, the dustproof effect is achieved, meanwhile, extension can be conveniently conducted according to the use condition through the first telescopic hose and the second telescopic hose, the applicability is improved, and therefore the practicability is improved.

This utility model discloses an assembled hydraulic cylinder support, a telescopic guide rail chassis, and engineering machinery, including a base, a pin, transition sleeves, and clamping components. The base consists of a base plate and two oppositely arranged side plates, each with a corresponding slot facing outwards. The pin passes through the two slots of the support and is hinged to a lug on the hydraulic cylinder. The transition sleeves are respectively installed in the slots of the two side plates, with the two axial ends of the pin inserted into the corresponding transition sleeves, axially limiting the pin. The clamping components are respectively arranged on the top surfaces of the two side plates and are used to fix the transition sleeves in the slots. When the hydraulic cylinder is working, the mating surface between the support and the pin has a half-circle arc, resulting in a larger mating surface that can adapt to multi-angle forces on the hydraulic cylinder, making it highly adaptable. The support can be made smaller and more compact, and can be adapted to smaller cavity chassis.

The air pressure ejection air cylinder piston of the unmanned aerial vehicle comprises a piston sleeve, the piston sleeve is of a cylindrical structure with one end closed and the other end open, a pull rope shaft is connected to the piston sleeve, and an air bleed hole is formed in the closed end of the piston sleeve; and the piston sleeve is sleeved outside the piston sleeve. The hydraulic cylinder is simple in structure, connection between the pull rope and the piston is facilitated, high-pressure gas in the piston is released through the vent hole formed in the piston sleeve, the internal temperature of the piston and the internal temperature of the cylinder barrel are prevented from being too high, and therefore damage to the pull rope is reduced; and through the arrangement of the vent hole, the stability of the pressure in the launching process is ensured while the gas is released.