4results about How to "Large telescopic stroke" patented technology

The utility model discloses a kind of screw rod pulley secondary telescopic arms for massage chair magnetic therapy head, including assembly frame, sliding frame and sliding frame drive assembly, and the sliding frame is provided with physiotherapy head, and the assembly frame is equipped with first rack, and the sliding frame is provided with transmission wheel and driven wheel, and the driven wheel is spaced apart with two groups along front-back direction, the transmission wheel rotation is arranged on sliding frame and is engaged with first rack, the driven wheel rotation is arranged on sliding frame and is linked with transmission wheel cooperation, and two groups driven wheel are equipped with synchronous belt, the sliding frame is slidably provided with telescopic arm, the physiotherapy head is located on telescopic arm, the telescopic arm is guided and slides on sliding frame and is clamped on synchronous belt, sliding frame is driven to slide forward and backward by screw rod, realize primary telescopic, simultaneously when sliding frame slides, further telescopic can be driven by the cooperation of gear and first rack to physiotherapy head, realize secondary telescopic, and only one power source is needed.

The application discloses a traffic cone pretreatment device automatic folding and unfolding system, a folding and unfolding vehicle and a folding and unfolding method. The automatic folding and unfolding system comprises a guide rail base, a guide rail frame, a pretreatment device, an electric push rod I and an electric push rod II. The guide rail base is connected with a vehicle frame and is installed on a sliding rail of the guide rail frame and slides up and down through the electric push rod I. A hinged base II of the guide rail frame is hinged with the pretreatment device, a hinged base I is hinged with the electric push rod II, the other end of the electric push rod II is hinged with the first guide rod end of the pretreatment device, the electric push rod II drives the pretreatment device to swing, the automatic folding and unfolding system of the pretreatment device is installed on the side of the vehicle and is wholly stored under the vehicle frame during driving, so that the system does not exceed the width of the vehicle. The multi-stage rotary support limiting structure can effectively reduce the horizontal folding and unfolding space of the device, realize a large telescopic stroke, ensure the stability of the included angle between the guide rod and the first guide rod and prevent swinging. The electromagnetic lock locking mechanism ensures sufficient ground clearance during driving.

The invention discloses a steam turbine defect composite voiceprint diagnosis device, and particularly relates to the technical field of steam turbine diagnosis, the steam turbine defect composite voiceprint diagnosis device comprises a track body, a diagnosis assembly, a mounting and dismounting mechanism and a telescopic assembly; the diagnosis assembly is arranged on the track body; the diagnosis assembly comprises a moving plate, a base, a rotating arm A, a connecting arm, a rotating arm B, a fixed plate, a voiceprint detector, a vibration sensor and a camera body; the moving plate is slidably arranged on the track body through the driving assembly. The base is connected with the moving plate through the mounting and dismounting mechanism; the rotating arm A is rotationally connected with the base through a rotating motor A; the connecting arm is arranged above the rotating arm A; the rotating arm B is rotationally connected with the connecting arm through a rotating motor B; the fixed plate is arranged on one side of the rotating arm B; the voiceprint detector, the vibration sensor and the camera body are all arranged on the fixing plate; the device is reasonable in structural design, capable of achieving efficient, continuous and automatic monitoring, comprehensive in coverage and low in use cost, and the diagnosis accuracy is greatly improved.

The utility model relates to the technical field of conveyer, especially to the special turning net belt of U type turning conveyer, including the transport net belt of setting in conveyer, the conveyer is provided with U type bend, and the U type bend includes the bend, the entering straight road of entering the bend and the leaving straight road of leaving the bend, the conveyer still includes the collection box of setting on the U type net belt, and the collection box sets on the entering straight road, and the opening of collection box is opposite to the direction of the transport net belt entering the bend, the collection box is connected to the rotating mechanism, and the rotating mechanism sets up in the side of entering straight road, the air jet head is still provided below the turning net belt, and the air jet head spout is upward to the turning net belt, and the air jet head is connected to the high pressure gas pipeline, the air jet head is arranged at least three along the line along the width direction of the turning net belt, and the spout of at least three air jet heads is opposite to the collection box opening direction front. Remove the foreign matter in the mesh of transport net belt, reduce the jam or deformation of transport net belt caused by sundries.