199results about How to "Adjust angle" patented technology

The invention discloses a thermal mechanical fatigue test system for a hollow air-cooled turbine blade, which includes a loading subsystem, a heating subsystem, an air cooling subsystem, a water cooling subsystem and a controlling subsystem, wherein the loading subsystem vertically clamps the turbine blade; the heating subsystem is horizontally placed in the middle part of the loading subsystem for heating the turbine blade; the air cooling subsystem is horizontally arranged and connected with the loading subsystem through a pipeline; the water cooling subsystem is horizontally arranged and connected with the loading subsystem and the heating subsystem through the pipeline; and the controlling subsystem is arranged at the upper part of the heating subsystem and connected with the loading subsystem, the heating subsystem and the air cooling subsystem through a cable. The thermal mechanical fatigue test system is used for simulating the working stress field, the temperature field and the loading spectrum of the examination cross section of the hollow air-cooled turbine blade. The thermal mechanical fatigue test system satisfactorily overcomes the difficulty for simulating the working stress field, the temperature field and the loading spectrum of the examination cross section of the hollow air-cooled turbine blade, and provides the technical basis and the safety guarantee for the safe and reliable working of the aero engine.

The invention discloses a rear left-side type ditcher. The rear left-side type ditcher comprises an L-shaped machine frame and a vertical column, wherein the L-shaped machine frame is connected to a hooking frame at the rear portion of a tractor; the machine frame is provided with a gearbox located on the left side of the rear portion of the tractor; an output spline shaft of the gearbox is driven by a power mechanism of the tractor; the spline shaft is provided with a roller cutterhead; a plurality of blades are evenly distributed on the periphery of the roller cutterhead; the vertical column capable of being adjusted vertically is arranged on and connected to the machine frame; a straightening board shaft is fixedly arranged on the side portion of the vertical column in parallel; a horizontal bottom board is fixedly arranged at the bottom of the vertical column; the front end of a straightening board is hinged to the straightening board shaft; an adjusting bolt for limiting the rotation of the straightening board is connected between the bottom board and the straightening board. The rear left-side type ditcher improves the safety, prevents soil from being sucked into an air inlet of an engine and can ditch on the ridge edge, and as the machine frame is provided with a straightening device, the tractor is prevented from deviating according to the mechanics principle scientifically.

The invention discloses a concrete wall prefabricated drilling device for building construction. The device comprises a rack, a rotating stand column, a supporting beam, a lifting sliding block, a drilling box and a drill bit. A rectangular sliding cavity is formed in the outer wall of the upper portion of the rotating stand column, a lead screw is rotationally erected inside the rectangular sliding cavity in a bearing connection mode, the lifting sliding block in sliding fit with the rectangular sliding cavity is arranged inside the rectangular sliding cavity in a vertical sliding mode, the lead screw is sleeved with the lifting sliding block in a threaded connection mode, the supporting beam is fixedly erected on the side wall of the right end of the lifting sliding block in a welded mode, and the drilling box is fixedly installed on the upper surface of the right end of the supporting beam. The device is simple in structure, convenient to operate, flexible to use, capable of greatlylowering the labor intensity of a worker, high in drilling efficiency, long in service life and suitable for being used and popularized.

The invention discloses a variable posture waste picking-up end executor, and particularly relates to the technical field of environmental protection mechanical equipment. The variable posture waste picking-up end executor consists of a rack, a connecting rod mechanism, clamping devices, a limiting device and a locking device; the connecting rod mechanism is connected with the rack through bolts; the clamping devices are located at the upper part of the rack and are connected with the connecting rod mechanism through bolts; the limiting device is located at the upper part of the rack; and the two clamping devices are connected to the rack through screws; and the locking device is connected with the tail of the rack through bolts. The variable posture waste picking-up end executor is mainly used for grabbing columnar objects in different sizes, and has the characteristics of high grabbing precision and a wide grabbing range.

The invention relates to the technical field of water and soil loss prevention, in particular to a slope protection device for preventing and treating water and soil loss, and the device comprises ananchoring mechanism, a slope protection base, a positioning inserted rod, a slope protection body, a vegetation slope protection structure, an inclined plane regulator and reinforcing ribs, wherein the anchoring mechanism is rotatably connected to the front end of the slope protection base; the slope protection body is fixed in the middle of the top end of the slope protection base; four corners of the slope protection base are respectively connected with the positioning inserted rod; the two sides of the front end of the slope protection body are fixedly connected with the two sides of the front end of the slope protection base through the reinforcing ribs respectively; the two sides of the rear end of the slope protection body are fixedly connected with the two sides of the rear end of the slope protection base through the reinforcing ribs respectively; and the slope protection device combines the building slope protection with the ecological vegetation slope protection, by plantingvegetation on the inner side of the vegetation slope protection structure, the preparation of planting is protected by the vegetation slope protection structure, and the stability between the plantinginitial stage of the vegetation and the ground is improved, and the slope protection device for preventing and treating water and soil loss is convenient for improving the growth of the ecological vegetation slope protection.

The invention provides a method for controlling a permanent magnet direct current brushless without hall motor, comprising the following steps of: measuring a three-phase counter electromotive force of the motor and starting the motor; measuring a phase voltage of any phase in a PWM (Pulse Width Modulation) signal dead zone period of the one phase of bridge arm in a driving circuit of the motor so as to obtain a zero crossing point of phase current of the phase to further determine the time required when the phase current passes through a 360-degree electrical angle; and carrying out three-phase voltage sine pulse width modification (SPWM) on the motor so as to control the motor. Correspondingly, the invention also provides a device for controlling the permanent magnet direct current brushless without hall motor. After the motor is started, the phase voltage of any phase is measured at the PWM signal dead zone period of the one phase of the bridge arm of the driving circuit of the motor to finally obtain the time required when the phase current passes through the 360-degree electrical angle, and then the motor is controlled by using a three-phase SPWM method. In the invention, the motor is controlled on the basis of the existing conditions without extra hardware resources; and the invention is simple and reliable and has good controllability and low cost.

The invention provides a mobile phone protection shell with a support frame. The mobile phone protection shell comprises a mobile phone protection shell body, a mobile phone support frame and a rotating part, wherein a containing groove is also horizontally formed in the middle of the mobile phone protection shell body; one end of the containing groove is open, and the other end of the containing groove is closed; the shape of the mobile phone support frame and the containing groove are complementary; the mobile phone support frame is connected with the mobile phone protection shell body by the rotating part; through rotation in a matching manner, the mobile phone support frame is contained in the containing groove or the mobile phone support frame and the mobile phone protection shell body form an included angle and are fixed. The problem that the mobile phone support frame is inconvenient to use because the mobile phone support frame and a mobile phone are separately arranged is solved by adopting the mobile phone protection shell.

The invention discloses an electromagnetic environment effect test method and a system for simulating a flight state of an unmanned aerial vehicle. The method comprises the following steps: firstly, an ultrawideband electromagnetic pulse generator is used as a radiation source, and a test bed placed with the unmanned aerial vehicle is arranged rightly in front of the ultrawideband electromagnetic pulse generator; a ground control platform is put on the side surface of the ultrawideband electromagnetic pulse generator, and is connected with a radiation antenna through an adjustable attenuator; electronic equipment in the unmanned aerial vehicle is normally opened; then, an attenuation quantity of the adjustable attenuator is increased, a radiation signal sent by the radiation antenna is reduced until the unmanned aerial vehicle is out of control; the ultrawideband electromagnetic pulse generator is opened to generate an electromagnetic environment to be tested; the position of the unmanned aerial vehicle is adjusted to radiate one part of the unmanned aerial vehicle; and the electromagnetic interference resistance of the unmanned aerial vehicle is observed and recorded on the ground control platform. The method has the following advantages: a real magnetic sensitive threshold of the unmanned aerial vehicle can be obtained; and the method is truly used for guiding the flight electromagnetic safety of the unmanned aerial vehicle.

The invention discloses a steel pipe roller straightening machine, comprising: a first straightening device used for straightening a steel pipe in a first direction; a second straightening device used for straightening a steel pipe in a second direction Straightening; adjustable supporting device, which is connected with the second straightening device, used to adjust the distance between the steel pipe conveying direction of the first straightening device and the steel pipe conveying direction of the second straightening device and the distance between the first direction and the second straightening device The angle between the directions. The steel pipe roller straightening machine of the invention has the advantages of no damage to the steel pipe surface, stable structure, high straightening precision, strong operability, and good mechanical properties.

The invention relates to a bit detection device, which comprises two measurement plates in rotation connection with a dial respectively and positioning plates in sliding connection with the two measurement plates respectively. The side wall of the dial is provided with a positioning groove for clamping two main cutting edge end heads of the bit. The dial is also in rotation connection with two pressing devices capable of fixing the two measurement plates on the dial respectively. According to the bit detection device, through enabling the two measurement plates and the dial to be in rotation connection, the included angle between the measurement plates can be adjusted, and a bit with a different specification can be detected; according to the coincidence degree between the transverse edge of the bit and the positioning groove, and the fit degree between the two main cutting edges and the measurement plates and the positioning plate, whether the transverse edge of the bit after grinding is in the center can be detected, whether angles and lengths of the two main cutting edges are consistent is detected, universality is high, and measurement is accurate.

The invention provides an air guide plate and an air conditioner comprising the same. The air guide plate comprises an air guide plate body and at least one inner guide plate, wherein the air guide plate body is rotatably arranged at an air outlet of the air conditioner; the inner guide plate, at intervals with the inner surface of the air guide plate body, is arranged on the inner side of the airguide plate body, and guides the flow direction of airflow with the air guide plate body together; each inner guide plate is connected with the air guide plate body through at least one telescopic support, so that the position of the inner guide plate relative to the air guide plate body can be changed by adjusting the stretching length of the telescopic support; and the air guide plate can achieve comfortable air supply of the air conditioner.

The invention discloses a fixture of a polishing machine tool, which comprises a base used for being sleeved and connected with the end part of a rotating shaft of the polishing machine tool, a work piece shaft sleeve used for clamping the end part of a work piece to be polished and an angle adjusting device, wherein the upper end of the angle adjusting device is connected with the work piece shaft sleeve, the lower end of the angle adjusting device is connected with the base, and the upper end of the adjusting device can swing relative to the lower end so as to adjust the included angle between the shaft sleeve of the work piece and the vertical direction. The working efficiency is improved, fine adjustment can be carried out, the device has a simple structure, the manufacturing cost is low, the use is convenient, position correction is carried out while the work piece is fixed, the product quality is high, the use effect is good, the stable consistency of the processing quality of work pieces is ensured, the problems of different work piece polishing precision and high rejection rate caused by prior manual operation polishing equipment are solved. The invention also discloses a polishing machine tool comprising the fixture.

The invention discloses a punching machine. The punching machine comprises a steel pipe rolling device and a steel plate bending mechanism which are arranged side by side. A step groove is formed in the middle of a base of the steel pipe rolling device and comprises a first groove, a second groove and a third groove. The lower left corner of a left press module and the lower right corner of a right press module are hinged to the side walls of the first groove correspondingly. The groove bottom of the third groove is fixedly connected with the bottom end of a second spring, and the top end of the second spring is connected with an ejector rod. A blind hole is vertically formed in the middle of a base plate of the steel plate bending mechanism, a spring is arranged at the bottom of the blindhole, and the bottom end of the spring is fixed to the hole bottom of the blind hole. Supports are arranged on the two sides of the ejector rod correspondingly. Each support comprises a right-angle block and a back plate in a flat plate shape. A mold plate is hinged in each right-angle opening, one end of each mold plate is hinged to the corresponding back plate, each hinged shaft is perpendicular to the corresponding back plate, and two chamfers on the edge of the upper surface of the other end of each mold plate are jointed into a V-shaped mold cavity. The punching machine is high in forming efficiency, good in forming quality, simple and ingenious in structure and beneficial to use and popularization.

The invention discloses a small-pore-diameter long-distance optical compatible vacuum sample cavity. The vacuum sample cavity comprises a low-temperature sample rod, a multi-channel connecting device, an ultrahigh vacuum angle adjustable device, an ultrahigh vacuum XYZ three-dimensional displacement platform, an upper cavity body, an optical window and a window protecting cavity which are sequentially arranged from top to bottom. The low-temperature sample rod is in vacuum sealing connection with the multi-channel connecting device which is in vacuum sealing connection with the ultrahigh vacuum angle adjustable device. The ultrahigh vacuum angle adjustable device is in vacuum sealing connection with the ultrahigh vacuum XYZ three-dimensional displacement platform which is in vacuum sealing connection with the upper cavity body. The upper cavity body is in vacuum sealing connection with the optical window which is connected with the window protecting cavity. The vacuum sample cavity is suitable for small-pore-diameter long-distance conditions, generates high-vacuum environment, and can be used for optical properties of optical detection materials.

The invention relates to a rescue robot accommodating system. The rescue robot accommodating system comprises a personnel accommodating device (8), a middle transition conveying device (6) and a shovel-like pickup device (4), wherein the personnel accommodating device (8) is arranged on a robot frame (2); the shovel-like pickup device (4) is shovel-shaped, and is connected to the front end of the middle transition conveying device (6) in a hinging way; the back ends of short-range electric push rods (5,5') are hinged to the middle transition conveying device (6); the front ends of the short-range electric push rods (5,5') are hinged to a short-range electric push rod lower support on the shovel-like pickup device (4); the personnel accommodating device (8), the middle transition conveying device (6) and the shovel-like pickup device (4) are all provided with conveying belts (11) which can move bilaterally under the driving action of an electric drum and are used for carrying and moving wounded persons. By adopting the rescue robot accommodating system, the carrying and moving work of trapped and critically-wounded personnel can be finished.

The invention relates to a laser line projection device which comprises a base table. A base column is arranged on the base table, the bottom of the base column is fixed onto the upper surface of thebase table, a rotary platform capable of horizontally and axially rotating is arranged at the top of the base column, and an annular gear sleeves the base column. A rotary motor is fixedly arranged onthe rotary platform, and a rotary gear is arranged on an output shaft of the rotary motor in a transmission connection manner and engaged with the annular gear. Four laser modules are arranged on therotary platform, are fixed onto the rotary platform by the aid of deflection motors and can be driven by the deflection motors to deflect in the vertical direction. The laser line projection device has the advantages that rectangular projection with different sizes and in different shapes can be projected at indoor tops and on wall surfaces as needed, mounting and positioning at the indoor tops and on the wall surfaces can be facilitated, manual positioning by mounting personnel can be omitted, and positioning is more convenient and accurate.

The invention relates to a novel structure of a drilling and milling machine tool, and the novel structure comprises a base, upright posts, a power head, a sliding worktable, a regulating base, circular arc-shaped slotted holes, a motor, a lead screw, an upper cross beam, a handwheel, a sliding bearing, a bearing seat and a bolt, wherein the power head is mounted and fixed on the regulating base, the regulating base is mounted and fixed on the sliding worktable through the bolt and the circular arc-shaped slotted holes which are in bilateral symmetry on the regulating base, the sliding worktable is mounted and fixed on the two upright posts through the sliding bearing and the bearing seat, the upright posts are mounted and fixed on the base, the upper cross beam is mounted and fixed at the upper end parts of the upright posts, the lower end of the lead screw is connected with the sliding worktable in a threaded fit manner, the upper end of the lead screw is connected with the upper cross beam, and the top end of the lead screw and the handwheel are connected and fixed.

The invention discloses a special ladder for quickly picking fruits. The special ladder consists of vertical rods and a supporting rod, wherein a plurality of transverse rods are arranged on the vertical rods, first base plates are arranged at the lower ends of the vertical rods, a conical pin is arranged below each first base plate, the upper end of the supporting rod is pivoted with the middle sections of the vertical rods. The special ladder for quickly picking the fruits, disclosed by the invention, is obtained by improving an existing single-leg ladder; the supporting rod is additionally arranged, so that the vertical rods can perform stable supporting; the first base plates and the conical pins are additionally arranged, so that the gripping performance of the whole special ladder is improved. Therefore, an included angle between each vertical rod and the supporting rod is regulated, so that the special ladder can be conveniently and freely supported and arranged in a fruit tree forest for further conveniently and quickly picking the fruits on fruit trees.