42results about How to "Large telescopic stroke" patented technology

The invention belongs to the field of home appliances and specifically discloses a portable automatic telescoping mechanism for home appliances. The portable automatic telescoping mechanism for the home appliances comprises a housing, a driving component and a telescoping component; one side of the housing is open; the orientation of the opening is recorded as an extending direction; one end of the telescoping component is fixed in the housing and recorded as a fixing end; the other end of the telescoping component can extend out of the housing or retract into the housing and can be recorded as a movable end; the driving component is fixed in the housing; and the driving component can drive the telescoping component so that the movable end extends out of or retracts into the housing. The portable automatic telescoping mechanism for the home appliances has the advantages that the mechanism can be conveniently mounted in various cabinet type home appliances, the structure is compact andreliable, the floor space is small, the telescoping travel is small, and meanwhile, the portability of manual operation can also be considered, the mechanism can still be manually opened and closed without being locked in the case of sudden power failure, and moreover, a hand pinching preventing and anti-collision function is also realized.

The embodiment of the invention provides an electromechanical actuator and a control method thereof, and belongs to the technical field of electromechanical servo. The actuator comprises a first motorassembly, a second motor assembly, a first actuating rod and a second actuating rod, wherein the first actuating rod is driven by the first motor assembly, the second actuating rod is driven by the second motor assembly, the first actuating rod is of a hollow structure, the first actuating rod and the second actuating rod move relative to each other under driving of the first motor assembly and / or the second motor assembly, and the second actuating rod partially moves in a cavity of the first actuating rod. By the actuator, dual-redundancy control can be achieved, a normal working mode and abackup working mode can be set, and switching between the working modes is performed according to a special fault; and compared with a hydraulic servo system and an electromechanical hydrostatic servosystem, the actuator has the advantages that the actuator has more flexible and reliable redundancy management mode, and the problem of a fault caused by a roller or a ball screw which is stucken isprevented.

The invention discloses a chain transmission type longitudinal winding device. A rocker is connected with the outer end of a rocker shaft. A shaft body, located in a winding box, of the rocker shaft is sleeved with an input gear. The input gear is engaged with a front first intermediate small gear and a rear second intermediate small gear at the same time. The first intermediate small gear is connected with an output bevel gear through a gear transmission mechanism. A cantilever arranged in front of the winding box is fixed to the output bevel gear. The second intermediate small gear is connected with drive chain wheels through a gear transmission mechanism. Each drive chain wheel is connected with a driven chain wheel on the same side through a chain. A transverse rod is connected between the left chain and the right chain. The transverse rod is hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to the rear end of a push rod. The front end of the push rod is sleeved with a winding barrel. The chain transmission type longitudinal winding device is simple and compact in structure, small in size and convenient to package and carry, the rotating speed of the winding barrel is large, winding and unwinding are fast, meanwhile, the telescopic stroke of the push rod is large, many wires are wound, and disordered winding cannot happen.

The invention discloses a lifting arm. The lifting arm comprises: a basic arm, wherein a first accommodation chamber is arranged in the basic arm; a first boom, wherein the first boom is arranged and capable of moving back and forth in the first accommodation chamber, a second accommodation chamber is arranged in the first boom, walls of the second accommodation chamber are provided with a plurality of installing holes, and each installing hole is rotatably provided with a first pulley; a second boom, wherein the second boom is arranged and capable of moving back and forth in the second accommodation chamber and is rotatably provided with second pulleys, and the second pulleys and the first pulleys are arranged at a preset interval along a direction from front to back; an actuator which is fixed on the basic arm and connected with the first boom to drive the first boom to move back and forth; and a steel wire rope, wherein a first end of the steel wire rope is fixed on the basic arm, and a second end of the steel wire rope winds around the first pulleys and the second pulleys and is then fixed on the basic arm to drive the second boom to move back and forth. According to embodiments provided by the invention, the lifting arm is telescoping under the condition of load and has strong load telescoping capability.

The invention provides a retractable supporting structure and a hospital bed lifting mechanism. The retractable supporting structure comprises a plurality of groups of scissor supports which are arranged along a first direction, and a lead screw driving mechanism which is used for controlling the groups of scissor supports to retract in the first direction, wherein the groups of scissor supports comprise at least one group of scissor supports; on supporting rods of the group of scissor supports, the distance from a connection point between two supporting rods to one end of each supporting rod is greater than the distance from the connection point to the other end of each supporting rod; a nut or a motor of the lead screw driving mechanism is located on the group of scissor supports; the ends, closer to the connection point between the two supporting rods of the group of scissor supports, of the supporting rods of at least one group of scissor supports are located on both sides of a connecting wire of the nut and the motor respectively. Compared with an existing retractable supporting structure, the retractable supporting structure has the advantages that the nut on a lead screw is capable of increasing the retracting stroke of the scissor supports under the condition that the moving distances are the same.

The invention discloses a pipeline guide device comprising a box body. A set of opposite wall surfaces of the box body are respectively provided with a line inlet via which a pipeline enters the cavity of the box body and a line outlet via which a pipeline extends out of the box body. The cavity of the box body is provided with a radial pushing mechanism which is arranged along the radial direction of a pipeline, fits the side wall surface of the pipeline, and is used for applying a radial pushing force to the pipeline based on elasticity to make the pipeline bent along the radial direction and limit axial movement of the pipeline. Guide roller components used for guiding a pipeline to be bent along the radial direction of the pipeline under the action of the radial pushing mechanism are respectively arranged at the position of the line inlet and at the position of the line outlet inside the cavity of the box body. The linear line inlet and the linear line outlet are formed on the box body, so a pipeline can be guided linearly, there is no need for winding, and two-way telescopic extension is easy to realize. The radial pushing mechanism applies a radial pushing force to a pipeline to make the pipeline bent, the pipeline has both longitudinal and transverse telescopic extension strokes due to bending, and the space utilization rate is high.

The invention discloses a multi-faceted pneumatic side sliding table, which comprises a casing, a side sliding table is slid on one side of the casing, a first cylinder, a driving mechanism and a second cylinder are installed in the casing, and the The first air cylinder is installed on the inner bottom surface of the housing, the driving mechanism is installed on the output end of the first air cylinder, the second air cylinder is installed on the driving mechanism, and the rear of the second air cylinder A fixed plate is installed, sliders are provided at both ends of the fixed plate, moving guide rails are installed on the inner walls of both sides of the housing, and the sliders slide on the corresponding moving guide rails. A pair of buffer mechanisms are installed on the moving guide rail, the top of the slider can be supported by a pair of buffer heads, a piston rod is slid in the first cylinder, and a sealing lip structure and a sealing lip are sleeved on the piston rod. With the plug structure, the invention can improve the moving stroke of the slide table, and has high safety and reliability in use.

The invention relates to a disc plane module which comprises a plane whose front has an inscribed board, wherein the back of the inscribed board attaches an elastic pad; it extents a plurality of slide rods from the plane back; a guiding seat with the groove hole is fixed on the plane back; a torsion spring is fixed in the groove hole; a base arranges a plurality of slide holes; at least one line groove is positioned on the base; the edge of the torsion spring can inset into the line groove to add the flexible traveling of the disc plane module.

The invention discloses a left-right parallel thrust-lifting type transverse intelligent automobile carrier. A walking mechanism is arranged on a chassis, left and right thrust-lifting mechanisms including thrust-lifting hands are arranged on the chassis, the left thrust-lifting mechanism adopts a two-stage sliding telescopic arm, the right thrust-lifting mechanism adopts a single-stage sliding telescopic arm, and driving motors drive the thrust-lifting hands on the telescopic arms to perform parallel pushing from the middle of the carrier to the left side and the right side so as to be close to front and rear tires. The transverse intelligent automobile carrier can adapt to automobiles different in axle distance, also greatly shortens the early-stage preparation time and improves the automobile storage or taking efficiency. The left thrust-lifting mechanism corresponding to the rear wheels of the automobiles adopts the two-stage sliding telescopic arm, so that the telescoping stroke is prolonged, and the carrier is suitable for carrying of the automobiles different in axle distance. The left thrust-lifting mechanism thrust-lifting the rear wheels of the automobiles and the right thrust-lifting mechanisms thrust-lifting the front wheels of the automobiles are integrally arranged on the whole carrier, so that the carrier is good in integrity and simple and compact in structure. During automobile storage or taking, the thrust-lifting arms simultaneously push tires, only produce radial forces to the tires and do not damage the automobiles.