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

The invention discloses a T-shaped beam casting special mold and a using method thereof, and relates to the technical field of T-shaped beam manufacturing. The T-shaped beam casting special die comprises a guide rail, wherein a walking trolley is arranged on the sliding rail in a sliding mode, a left mold and a right mold are symmetrically arranged on the walking trolley, the left mold comprises frames and panels connected to the inner side of the frames, the walking trolley is provided with mold guide devices which are positioned at the outer side ends of the two frames and provided with high-stroke spaces, the outer side ends of the two frames are provided with overturning type demolding mechanisms, an automatic slope adjusting mechanism and a locking mechanism are arranged on each frame, the tops of the automatic slope adjusting mechanisms and the tops of the locking mechanisms are hinged to the bottom of rotatable parts of the panels, combined adjusting mechanisms for adjusting theheight of the left mold and the bottom of the right mold are arranged at the bottom of the left mold and the bottom of the right mold, and supporting columns which are convenient to assemble and disassemble are arranged on the outer sides of the tops of the two frames, and during use, the supporting columns are subjected to mold closing and grouting, demoulding. The T-shaped beam casting specialmold has the advantages of being complete in function and good in T-shaped beam forming quality.

The invention belongs to the technical field of an underground coal mine short-wall exploitation device, and particularly relates to a single-arm onboard roof bolter for an underground coal mine, which solves the problems of the existing anchor support device. The single-arm onboard roof bolter comprises a rotating base, a cantilever, an operating platform assembly, a drilling arm rotating device and a drill frame, wherein the movable rotating base capable of rotating horizontally is a base for connecting the single-arm onboard roof bolter and equipment, the cantilever is supported on the rotating base, the cantilever is of an inner-outer sleeve structure, one end of the cantilever is connected with the rotating base through a horizontal hinge shaft, the other end of the cantilever is hinged to the operating platform assembly, the drill arm rotating device is installed on the front end of the operating platform assembly, and the drill frame can be installed on the front end of the operating platform assembly in a rotating manner. The single-arm onboard roof bolter is used for supporting other coal mine equipment mining machinery, roadway repairing machinery and the like, can move back and forth on a track provided by the equipment by adopting the hydraulic oil as a power source, has multiple degrees of freedom such as extension, rotation and the like and can realize the anchor installation construction of a whole section.

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 provides a front part buffer device for a semi-trailer transport vehicle. An inner cylinder barrel is divided into a gas cavity and a liquid cavity through a floating piston; one end of the liquid cavity is fixedly connected with a piston rod of an outer cylinder barrel through a piston head part; the liquid cavity is communicated with an oil liquid cavity of the outer cylinder barrel; the outer wall of the outer cylinder barrel is fixedly connected with a frame; the piston rod is connected with a saddle through a saddle pin shaft; two damping leakage holes running through the upper end lower ends are formed in the piston head part; and the opening directions of the two damping leakage holes are opposite. The front part buffer device for the semi-trailer transport vehicle not only meets the requirement for transportation smoothness of the semi-trailer transport vehicle, but also can be used for the traction of a semitrailer tractor, has a good buffering and damping effect and can meet the requirement for a lifting function of the transport vehicle.

The invention provides a workpiece intelligent mobile storage and taking device. The workpiece intelligent mobile storage and taking device comprises a goods shelf, a walking mechanism, a lifting mechanism and a fork mechanism, workpieces are placed on the goods shelf, the walking mechanism controls the lifting mechanism to transversely move, the lifting mechanism is used for controlling the forkmechanism to ascend and descend, the fork mechanism is used for storing and taking the workpieces, and the walking mechanism, the lifting mechanism and the fork mechanism cooperate with one another and can move in a three-dimensional space so as to complete storage and taking of the workpieces on the goods shelf. During implementation, position information on the goods shelf is recorded in a control system used for providing running control, and the fork mechanism can uniquely identify the position information on the goods shelf so that manual identification operation can be replaced, and thetime for finding the workpieces is shortened. The mechanical equipment is adopted to replace manual operation, the workpieces can be conveniently found when the workpieces are stored and taken, the working time can be shortened, and the device has the advantages of being easy to operate, rapid and convenient to use, short in working time and high in space utilization rate.

The invention discloses an environmentally-friendly and energy-saving road construction warning device, which comprises a support, a solar cell panel, a base, stem casings, a buffer mechanism, telescopic poles, a display screen, a top cover, a cable, a ring base and a ring. The support is welded to the back surface of the base; the support is equipped with the solar cell panel; the solar cell panel and the ground form an included angle of 45 degrees; the two sides of the base are provided with the stem casings respectively; the stem casings and the base are of an integrated structure; the stemcasings are internally provided with the telescopic poles respectively; the telescopic poles are in movable connection with the stem casings; the top cover is connected on the top ends of the telescopic poles; the display screen is connected under the top cover; the base is internally provided with a cavity; and the cavity is in clearance fit with the display screen. Through combination of the buffer device and a button, work personnel can be warned, thereby preventing accidental injuries or accidents and protecting personal safety of the work personnel; and the ring is internally provided with four iron blocks, so that ring volume can be improved, and alarm can be given more loudly to prevent missing of the alarm.

The invention discloses a novel color mixing 3D printer. The printer comprises a machine body, the top of the machine body is provided with a first trough and a second trough, the bottom of the firsttrough is connected with a first material conveying pipe, and the bottom of the second trough is connected with a second material conveying pipe. A printing device, a driving device and a forming platform lifting device are arranged in the machine body. The printer is convenient and quick to operate, the defect that in the prior art, different nozzles corresponding to different materials need to be switched when the materials in different colors are printed is overcome, and the printing efficiency is improved. Mixed color printing is conducted, so that the colors are brighter. A first screw rod is driven through a first servo motor, and a second servo motor drives a second screw rod so that the printing nozzles can flexibly move. Driving force is transmitted through hinge structures whichare rotationally connected crosswise, a forming platform is driven to stably ascend and descend in the vertical direction, and the printer has the advantages of being high in flexibility and large inextension stroke.

The invention discloses a seat type longitudinal bobbin winder. A base is mounted at one side of a shell and a rocker arm is arranged at the other side of the shell; an input gear is mounted at the inner end of the rocker arm; the input gear is engaged with a first-grade small gear; a first-grade large gear which is coaxial with the first-grade small gear is engaged with a second-grade small gear; a transition bevel gear is further arranged on a shaft of the second-grade small gear; the transition bevel gear is engaged with an output bevel gear; a cantilever arranged in front of the shell is fixed on the output bevel gear; the input gear is connected with a rear end of a push rod to form a crank connecting rod mechanism; a front end of the push rod penetrates through the output bevel gear; a bobbin sleeves the front end of the push rod; and the bobbin is located beside the cantilever. The seat type longitudinal bobbin winder is simple and compact in structure, easy to assemble, small in size and convenient to pack and carry; the bobbin has a high rotary speed and is convenient for pay-off and take-up; a retractable route of the push rod is large and a plurality of threads can be wound; and disordered thread winding does not occur and the flexibility and reliability of the running of a w hole device can be ensured.

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 suspended multi-telescopic hydraulic column, wherein, an oil cylinder (8) is arranged in a base (11); the lower part of a middle cylinder (6) is arranged in the oil cylinder (8); the lower part of an internal cylinder (4) is arranged in the middle cylinder (6); a first cylinder sleeve (2) is arranged outside the internal cylinder (4) at an outlet of the upper end of the middle cylinder (6); the lower part of a movable column (3) is arranged in the internal cylinder (4); a second cylinder sleeve (5) is arranged outside the movable column (3) at an outlet of the upper end of the internal cylinder (4); the top end of the movable column (3) is provided with a top cover (1); a return spring (10) is arranged in the movable column (3), and two ends of the return spring (10) are respectively connected with the top cover (1) and the base (11); and a valve body (7) is arranged outside the middle cylinder (6) at an outlet of the upper end of the oil cylinder (8). The suspended multi-telescopic hydraulic column has the advantages of long operating stroke, high strength, good stability, strong bearing capacity and wide practicability.

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 two-way multiplier telescopic ferry vehicle, which includes a vehicle frame and a motor reducer, the motor reducer drives double output shafts, and the double output shafts are connected to axles through couplings, wheels are arranged on the axles, and the upper part of the frame A telescopic device frame is provided, a gearbox slider is arranged above the telescopic device frame, and a telescopic arm is arranged on the gear box slider, and a drive gear set is provided at the lower end of the middle position of the telescopic device frame, and the drive gear set drives the gearbox slider. The sliding block of the gear box is provided with a telescopic gear set, and the telescopic gear set drives the telescopic arm, and the telescopic arm is provided with a drying car lock hook device. The invention has a long telescopic stroke, can complete the material transfer from one side to the other at one time without adjusting the direction of the two-way transfer perpendicular to the moving direction of the vehicle, has a compact structure, relatively small volume and reliable operation, and can greatly save space or space and manpower. Suitable for use in brick drying rooms.

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 bottom supporting device for a rotary drilling rig special for a railway and an application method thereof. The bottom supporting device for the rotary drilling rig special for the railway comprises a supporting frame, the supporting frame comprises at least two telescopic mechanisms connected through bottom beams, each group of telescopic mechanisms comprises a telescopic arm and a telescopic leg, the telescopic arms are fixed to the supporting frame and can telescope in the horizontal direction, and the telescopic legs are fixedly connected to the two ends of the telescopic arms. The application method for the bottom supporting device for the rotary drilling rig special for the railway comprises the following steps that S1, the supporting frame is moved to the working position; S2, the telescopic arms telescope to the working position in the horizontal direction; and S3, the telescopic legs extend downwards in the direction perpendicular to the horizontal plane to make contact with the supporting surface. The bottom supporting device and the application method thereof are suitable for railway construction, are convenient to transport, are suitable for being used in the working process of the rotary drilling rig, particularly in the construction process of the rotary drilling rig on a rail track, and are used for stably supporting the rotary drillingrig.

The invention relates to an abacus, and in particular relates to a distance-adjustable telescopic abacus. By utilizing the instability of a parallelogram of the abacus, a plurality of isometric middle connecting rods are connected in sequence through hinge pins in a hinged manner; a handle is held firstly, and subsequently a left-handed screw rod and a right-handed screw rod are driven to rotate by rotating a rolling hand wheel; as a left-handed nut and a right-handed nut are respectively fixedly connected with a left-handed nut hinge pin and a right-handed nut hinge pin, the left-handed nut and the right-handed nut sleeving the left-handed screw rod and the right-handed screw rod can only move inwards or outwards simultaneously but not rotating, the abacus is driven by an upper tail end connecting rod and a lower tail end connecting rod to unfold and withdraw, the distance of two adjacent rows of abacus beads can be conveniently adjusted in an equal distance manner, the requirements of people of different ages in different use situations can be met, the plane with the abacus beads is positioned at the front end of the plane formed by a middle connecting rod; and as the abacus beads have certain height gaps, the abacus is convenient to use, can be unfolded or withdrawn to expected distance according to demands when being used, and is convenient to fold and carry over.

The invention provides a formation testing probe comprising a probe base body, a filter cartridge and a setting assembly. The probe base body comprises a fixing bush, a hydraulic pipeline and a fluidpipeline; the filter cartridge is arranged outside the fluid pipeline in a sleeving mode and comprises a sampling opening; the setting assembly comprises a packing bush, a pushing-abutting sleeve, a pushing-abutting seat and a setting body; the packing bush is arranged in the fixing bush in a sleeved mode and can slide relative to the fixing bush; the pushing-abutting sleeve is arranged in the packing bush in a sleeved mode and can slide relative to the packing bush; and the pushing-abutting sleeve is fixedly connected with the setting body through the pushing-abutting seat, and the setting body is located on the inner side of the packing bush. The formation testing probe can be applied to the technical field of downhole drilling, and the packing protecting effect on the setting body is achieved by arranging the setting body, so that slurry scouring force applied to the joint of the setting body and the pushing-abutting seat and the scouring area are decreased; the problem that a setting body is prone to falling off, and consequently setting fails is solved; and the formation testing probe has the advantages that setting performance is good, setting reliability is high, and the service life of the setting body is long.

The invention relates to the technical field of medical instruments, in particular to a novel convenient oral cavity treatment device which comprises an upper tooth socket, a lower tooth socket, a telescopic part, an elastic part and a locking mechanism. One side of the upper tooth socket is provided with an upper tooth cavity, and one side of the lower tooth socket is provided with a lower toothcavity; one ends of the upper tooth socket and the lower tooth socket are rotationally connected; the telescopic piece is arranged between the upper tooth socket and the lower tooth socket, one end isconnected with the upper tooth socket, and the other end is connected with the lower tooth socket; the elastic piece is used for providing a relative opening force for the upper tooth socket and thelower tooth socket; the locking mechanism is used for locking the telescopic piece so as to position the telescopic position of the telescopic piece; and unlocking the telescopic part so as to releasethe telescopic limitation on the telescopic part. According to the scheme, the novel convenient oral cavity treatment device can be used during treatment radiation and rehabilitation training, components do not need to be disassembled and assembled on the novel convenient oral cavity treatment device during switching between radiation treatment and rehabilitation training, and use is more convenient.

The invention relates to the technical field of medical instruments, in particular to an oral rehabilitation therapeutic apparatus. The oral rehabilitation therapeutic apparatus comprises an upper tooth socket, a lower tooth socket, a telescopic part, an elastic part and a locking mechanism, wherein an upper tooth socket is formed in one side of the upper tooth socket, and a lower tooth socket isformed in one side of the lower tooth socket; one end of the upper tooth socket and one end of the lower tooth socket are rotationally connected; the telescopic part is arranged between the upper tooth socket and the lower tooth socket, one end of the telescopic part is connected with the upper tooth socket, and the other end of the telescopic part is connected with the lower tooth socket; the elastic part is used for providing force for relative opening of the upper tooth socket and the lower tooth socket; and the locking mechanism is used for locking the telescopic part so as to position thetelescopic position of the telescopic part and unlocking the telescopic part so as to relieve telescopic limitation on the telescopic part. According to the scheme, the oral rehabilitation therapeutic apparatus can be used during radiotherapy and can also be used during rehabilitation training, when the radiotherapy and the rehabilitation training are switched for use, components do not need to be disassembled from or assembled on the oral rehabilitation therapeutic apparatus, and use is more convenient.

The invention discloses a lorry-mounted crane, and belongs to the field of lorry-mounted cranes. A base is designed by adopting a low and flat structure; a positioning mechanism of an amplitude variation movable arm is arranged right below the amplitude variation movable arm; a telescopic oil cylinder is arranged in a telescopic arm, so that the height of the whole crane is lowered effectively, and the stability of the whole crane is improved; a height warning label and an angle indicator are arranged at two sides of the amplitude variation movable arm, and provide reference and help for operators. The adopted technical scheme is that the lorry-mounted crane comprises the base, the amplitude variation movable arm and a lifting arm; the rear end of the amplitude variation movable arm is hinged with the base; the front end of the amplitude variation movable arm is connected with the lifting arm; the base comprises a slewing mechanism and a support frame; the upper end of the support frame is hinged with the amplitude variation movable arm; the lower end of the support frame is connected with the slewing mechanism. The technical scheme can be widely applied to the field of lorry-mounted cranes.

The invention provides a mechanical arm capable of stretching out and drawing back in a multiplied-speed movement manner, and a cleaning robot. According to the mechanical arm, a driving assembly is arranged on a mounting seat, and a first section of a screw rod is arranged on the driving assembly; the mounting seat and the first section of the screw rod are arranged on a first section of a base, and the first section of the base is arranged on a first section of an arm; the first section of the arm and the first section of the screw rod are arranged on a first section of nut seat; a second section of the arm and the first section of the nut seat are arranged on a second section of the base, and the second section of the base is arranged on the second section of the arm; a second section of the screw rod is arranged on the second section of the base, and the first section of the screw rod is connected with the second section of the screw rod in a sliding manner; the second section of the arm is provided with a second section of the nut seat, and the second section of the screw rod is arranged on the second section of nut seat; and a third section of the arm is provided with a third section of the base, the second section of the nut seat is arranged on the third section of the base, and the third section of the base is arranged on the second section of the arm. The mechanical arm has the advantages of large telescopic stroke, small volume in a telescopic state, small occupied space, high working efficiency, simple structure and low cost.

The invention discloses a telescopic device and bathroom equipment with the same. The telescopic device comprises a telescopic pipe and an opening part or a flow guide part arranged at an outlet end of the telescopic pipe, and fluid in the telescopic pipe can flow out of the opening part or flow out of the telescopic pipe after being guided by the flow guide part; the opening part or the flow guide part is movably matched with the telescopic pipe, and the telescopic device also includes a movable control mechanism used for controlling the opening part or the flow guide part to move relative tothe telescopic pipe. The opening part or the flow guide part of the telescopic device can move relative to the telescopic pipe, so that the flowing-out angle of fluid is adjusted according to different requirements, the outlet area does not need to be enlarged, the using effect of various scenes is guaranteed, and the application range is wider.

The invention belongs to the technical field of an underground coal mine short-wall exploitation device, and particularly relates to a single-arm onboard roof bolter for an underground coal mine, which solves the problems of the existing anchor support device. The single-arm onboard roof bolter comprises a rotating base, a cantilever, an operating platform assembly, a drilling arm rotating device and a drill frame, wherein the movable rotating base capable of rotating horizontally is a base for connecting the single-arm onboard roof bolter and equipment, the cantilever is supported on the rotating base, the cantilever is of an inner-outer sleeve structure, one end of the cantilever is connected with the rotating base through a horizontal hinge shaft, the other end of the cantilever is hinged to the operating platform assembly, the drill arm rotating device is installed on the front end of the operating platform assembly, and the drill frame can be installed on the front end of the operating platform assembly in a rotating manner. The single-arm onboard roof bolter is used for supporting other coal mine equipment mining machinery, roadway repairing machinery and the like, can move back and forth on a track provided by the equipment by adopting the hydraulic oil as a power source, has multiple degrees of freedom such as extension, rotation and the like and can realize the anchor installation construction of a whole section.

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 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.