51results about How to "Simple and applicable structure" patented technology

The invention discloses a chestnut accurate grading device. The upper end of the second motor is rotatably connected to the lower end of the driving shaft, and the upper end of the driving shaft is fixedly connected to a gear, the gears are meshed and connected to an annular rack, and the annular rack is fixedly connected to a movable turntable; the upper right end of the device body is hinged The top of the buffer plate and the lower part of the buffer plate are provided with a chute, the sliding block is slidably connected in the chute, and the right end of the sliding block is hinged to the No. 1 spring telescopic column; the upper right end of the device body is externally fixedly connected to the first motor. The device realizes intermittent feeding through the movable turntable and the fixed disc, and the lower end of the grading plate is equipped with a plurality of chestnut holding grooves with different gap sizes, which can finely classify chestnuts according to different sizes, and the grading effect is excellent. The structure of the device is simple and applicable, which greatly improves the efficiency of chestnut grading and saves labor.

The invention relates to an evaporator of a loop heat pipe and a preparation method of the evaporator. The evaporator comprises an outer cylindrical wall, a heat absorption face, an upper end cover, a capillary core and a vapor-liquid isolation barrel with openings in the two ends. A cavity structure is formed by the outer barrel wall, the heat absorption face and the upper end cover, the capillary core is attached to the heat absorption face, one end of the vapor-liquid isolation barrel is in contact with the surface of the capillary core, the capillary core is pressed on the heat absorption face, and the other end of the vapor-liquid isolation barrel is fixedly connected with the upper end cover; the cavity structure formed by the outer barrel wall, the heat absorption face and the upper end over is divided into two parts through the vapor-liquid isolation barrel, a vapor cavity is formed in the vapor-liquid isolation barrel, and a liquid cavity is formed outside the vapor-liquid isolation barrel. The evaporator is ingenious in structural design and excellent in performance, it is effectively guaranteed that vapor and liquid in the evaporator are separated, certain positive pressure and negative pressure can be borne, that is, a coupling face is not likely to deform, the machining method is simple and reliable, and volume production is convenient.

The invention discloses an automatic cleaning smoke exhaust ventilator. The automatic cleaning smoke exhaust ventilator comprises a smoke exhaust ventilator body; the smoke exhaust ventilator body mainly comprises a transmission shaft, a transmission bevel gear, residual gears, a bidirectional screw rod and cleaning plates; a driving motor is arranged at the upper end of the smoke exhaust ventilator body; the lower end of the driving motor is rotatably connected with the transmission shaft; the lower end of the transmission shaft is fixedly connected with each of the transmission bevel gear and an exhaust fan; the two ends of the transmission bevel gear are respectively engaged with a driven bevel gear; each driven bevel gear is fixedly connected with a driven shaft; each driven shaft is fixedly connected with a residual gear; the lower end of each residual gear is partially engaged with a large gear; the large gears are fixedly connected with the bidirectional screw rod; the cleaning plates are arranged at the lower end of the bidirectional screw rod; the lower ends of the cleaning plates are pressed against an air inlet plate. According to the smoke exhaust ventilator, the cleaning plates are driven to move left and right through discontinuous positive and negative rotation of the bidirectional screw rod, so that the exhaust fan is driven to rotate to exhaust while the cleaning plates are driven to move left and right to clean by one power source; a motor is fully utilized; electric resources is saved; the cleanness degree of the smoke exhaust ventilator is improved.

The invention discloses a foot earth contact detection mechanism suitable for a legged robot. The foot earth contact detection mechanism suitable for the legged robot is characterized in that an inner thread copper pillar (5) is installed on an A connection rod (1C) of a foot strut (1), a spring (4) sleeves a B connection rod (1D) of the foot strut (1), and is located between the inner thread copper pillar (5) and a fixing seat (3), an A copper pillar (6) and a B copper pillar (7) are installed on the fixing seat (3), the A copper pillar (6) is connected with a positive pole of a 5V power source, the B copper pillar (7) is connected with a signal detection input / output port, the fixing seat (3) is installed on the lower portion of a connection seat (2), and a B connection rod (1D) of the foot strut (1) passes through an A center through hole of the connection seat (2), and then is connected with a nut (8) through a thread. The foot earth contact detection mechanism suitable for the legged robot achieves a contact switch function through electric signal connections and disconnections of the A copper pillar (6), the B copper pillar (7) and the inner thread copper pillar (5) , and thereby detects earth contact and lifting status of a foot of the legged robot in real time.

The invention discloses a multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method. The method includes the following steps: machining a nozzle mounting flange, selecting a gasifier assembly cylinder section where the nozzle mounting flange will be installed, installing an anti-deformation tool, machining a tube hole, where the nozzle mounting flange will be installed, in the assembly cylinder section, enabling the nozzle mounting flange to be matched with the assembly cylinder section, forming a fan-shaped groove with a big outside and a small inside between the nozzle mounting flange and the assembly cylinder section, enabling the inner bottom end of the fan-shaped groove to be in a semi-circular arc shape, enabling a location straight section to be arranged between the bottom and the inner wall of the assembly cylinder section, enabling the location straight section to have a 0.3-0.5mm fit clearance during assembling, adopting a 7-shaped connecting piece to connect and fix the nozzle mounting flange and the assembly cylinder section, detecting positional accuracy of four nozzles of the nozzle mounting flange, and welding the groove. By means of the mounting flange installing and welding method, the finally-obtained nozzle mounting flange is high in accuracy, good in quality and good in anti-deformation effect.

A quickly connected flange is composed of flange, the sealing ring with internal limiting barrel and external pressure baffle ring, and flat washer. Its advantages are high connection strength and simple structure.

The invention relates to a coal seam hydraulic reaming drilling tool, which includes a drilling tool and a drill pipe joint, a hydraulic pump with a hydraulic pump connection end and a rack in the casing of the drilling tool, and the driving gear transmission on the rack and the hollow driving gear bearing. Link, after the hollow driving gear bearing passes through the upper shaft hole of the thick steel frame, the outside of the drilling tool is fixed by the nozzle fixing bracket on the hollow driving gear bearing, and the inside of the drilling tool is fixed on the thick steel frame by the hollow driving gear bearing positioning piece , the shaft hole on the thick steel frame is connected with the sliding bearing of the hollow driving gear bearing, the connecting end of the hydraulic pump is connected with the connecting end of the hollow driving gear bearing with a high-pressure water pipe, the nozzle fixing bracket on the hollow driving gear bearing has a fixing hole for the nozzle rod, and the hydraulic pump There is a spring to pull the rack inside, and a rack limiter is set inside the drilling tool shell to limit the forward position of the rack. The hole reaming process is also disclosed. When the spring fails, the drill rod is pulled out to realize successive hole reaming with different radii, increasing the pressure relief area and drainage range of the drilling gas.