40results about How to "Large overturning moment" patented technology

The invention discloses a banana picking device, which comprises a rack, a cutter, clamping manipulator sliding blocks and a clamping manipulator opening and closing driving mechanism. A clamping manipulator comprises clamping rods. One ends of the clamping rods are hinged on the rack. The sliding blocks are slideably connected onto the clamping rods. The clamping manipulator opening and closing mechanism drives the clamping manipulator to open or close. The clamping manipulator opening and closing driving mechanism is hinged with the sliding blocks. The invention additionally discloses a banana picking method, which comprises the steps of propelling a walking trolley to a position under a banana tree; horizontally supporting the walking trolley through hydraulic supporting legs; lifting a scissor-type lifting mechanism to a position beside a banana fruit string; stretching the clamping manipulator to clamp a fruit stem; cutting off the fruit stem by using the cutter; after the fruit stem is cut off, lowering the scissor-type lifting mechanism; and after the scissor-type lifting mechanism is lowered down, restoring the clamping manipulator, taking down bananas and restoring the hydraulic supporting legs to complete the picking. The banana picking device and the banana picking method have the advantages that the problem that the clamping manipulator is difficult to open is solved, the clamping force lasts long, the clamping stability and reliability are high, the clamping manipulator can be opened and closed smoothly and sensitively, and the working efficiency is improved.

The invention relates to an automatic solar tracking system which tracks the sun accurately in real time and is used for efficiently collecting and using solar energy. The automatic solar tracking device comprises a solar energy photovoltaic array, an adjusting device connected with the solar energy photovoltaic array and used for adjusting the position of the solar energy photovoltaic array, a stand column for supporting the adjusting device and a control system. The adjusting device is composed of a pitch angle adjusting assembly and a position angle adjusting assembly, wherein the pitch angle adjusting assembly is connected with the position angle adjusting assembly through a vertical shaft, the position angle adjusting assembly is arranged on the stand column, and the control system is used for performing closed loop control on the adjusting device. The accuracy in solar tracking of the automatic solar tracking device is smaller than 0.1, the energy consumption only occupies for 0.5% of the electric energy production of the driving photovoltaic array, and the automatic solar tracking system has the advantages of being long in service life, intact in protection function and the like.

The invention discloses an antenna-feed compact range device mainly composed of a compact range reflection surface, an adaptive positioning feed source, a laser tracker and a microwave darkroom. The compact range reflection surface is a quadric surface. An increase in the size of the reflection surface causes a quadratic increase in the two-dimensional bending offset of the reflection surface, andthus aggravates structural deformation and long-term creep caused by self-weight, and reduces the structural stability and the profile accuracy of the reflection surface system. According to the antenna-feed compact range device, the reflection surface is a recumbent structure, and the feed source is configured in antenna-feed arrangement, which is beneficial to improving the structural stabilityand the profile accuracy of a super large-scale compact range reflection surface system and the plane wave quality of a compact range dead zone.

The invention provides a wind and light complementary moving compartment. The wind and light complementary moving compartment comprises a container, an electric generator tower rod is vertically arranged on the upper portion of one corner of the container, and a wind driven generator is arranged on the electric generator tower rod; supporting rod guiding parts are arranged on the two sides of the container, two bottom supporting rods are inserted in the supporting rod guiding parts on the two sides of the container correspondingly; a photovoltaic panel assembly is arranged in a photovoltaic panel frame, the lower portion of the photovoltaic panel border is connected with the two bottom supporting rods, and the upper portion of the photovoltaic panel border is connected with the container; a storage battery group and a controller are arranged in the container, and the controller is connected with the photovoltaic panel assembly, the wind driven generator and the storage battery group; and in a storing state, all parts are stored in the container. The invention further provides an assembling method for the wind and light complementary moving compartment. According to the wind and light complementary moving compartment and the assembling method thereof, the space utilizing ratio is high, disassembling is convenient, and moving and transporting are convenient; power generation capacity is high, continuity is good, and 24 hours of power supply throughout the day can be achieved; and energy consumption of power generation is entirely from natural sunshine and wind, and environmental protection, no pollution and no additional consumption are achieved.

The invention discloses a novel asymmetric floating side plate for a high-pressure large-displacement external-engaged gear pump. The novel asymmetric floating side plate comprises a side plate body, an unloading groove, an oil hole, a driving gear shaft hole, a driven gear shaft hole and a balancing force groove, wherein the unloading groove, the oil hole, the driving gear shaft hole and the driven gear shaft hole are formed in a reverse thrust surface of the side plate body; the balancing force groove is arranged in the balancing surface of the floating side plate; the reverse thrust surface of the floating side plate is also provided with an ear-shaped high-pressure oil groove; the ear-shaped high-pressure oil groove comprises two groups of arc-shaped grooves which are symmetric by taking a horizontal cross shaft as the center; and the tail end of the arc-shaped groove located at a driving gear side is also provided with a damping groove structure located in a transition region. A high-pressure region (oil discharging cavity) on the reverse thrust surface of the floating side plate is enlarged to the side of a low-pressure region (oil suction cavity) of the side plate in a way of excessively opening a w-shaped high-pressure oil groove, so that a gear shaft is balanced, and the radial force of a bearing is reduced; and meanwhile, the tail end of the high-pressure oil groove at a driving gear side is provided with the V-shaped damping groove structure, so that the pressure distribution on the surface of a reverse thrust surface side of the side plate is improved, the symmetric distribution of pressures at the driving gear side and the driven gear side of the reverse thrust surface of the floating side plate is realized, and finally, the force balance of the floating side plate is realized.

The invention relates to an inclined column and long-span roof coupling stress structure. The thickness of a long-span roof is reduced, the overturning moment generated by an inclined column to the whole structure is reduced, an overall stiffness contribution of the inclined column to the whole structure is increased, and meanwhile the large column bottom bending moment and horizontal force which are caused by the inclined column to a foundation are reduced; the structure ductility is increased, and the reliability of the structure is improved.

The invention discloses an overall four-point contact ball bearing with a seal. The overall four-point contact ball bearing comprises an outer ring, an inner ring, a steel ball, a retainer, a retainer ring, a sealing ring and a screw, wherein a contact angle of the bearing is 45 degrees; the bearing has a negative play; steps are arranged in two end faces of the outer ring; screw holes connected with the retainer ring are uniformly formed in the circumference of each stepped surface; outer ring roller paths (8) with the same diameters and curvatures are formed in the circumference of the inner wall of the outer ring; sealing grooves are respectively formed in two flanges of the inner ring; the labyrinth seal is formed between the two flanges of the inner ring and the inner diameters of the two retainer rings; oil holes are formed in the inner diameter surface of the inner ring; inner ring roller paths opposite to the outer ring roller paths are formed in the circumference of the outer wall of the outer ring. The overall four-point contact ball bearing has the characteristics of being compact in structure, high in reliability, high in sealing performance, good in mounting performance, free from maintenance and the like, can simultaneously bear high axial and radial combined loads, and is high in upsetting moment and wide in service condition range.

The invention relates to a straight shaft plunger pump, in particular to a straight shaft plunger pump with a limiting arc-shaped slide rail balance. The straight shaft plunger pump comprises a pump body, a cylinder body, a plunger, a balance, two planar arc-shaped slide rails and a balance angle adjusting device, wherein the bottom of the balance is provided with two slide tracks; the two planerarc-shaped slide rails are arranged at the bottom of the pump body in a sliding mode with the slide tracks of the balance, and are used for supporting the balance; and the slide rails on at least oneside are transverse limiting arc-shaped slide rails and the slide tracks on the balance are transverse limiting arc-shaped slide tracks. The transverse limiting arc-shaped slide rails and slide tracks increase the side force of a contact surface, reduce the transverse play of the balance, improve the stress state of the balance, improve the smoothness of a rotor, lighten vibration and fulfill theaim of reducing noises of the whole pump. Besides, the assembly of the whole pump is more simplified, and the assembly accuracy is also improved.

The invention discloses a four-connecting bar type extending leveling control system. The four-connecting bar type extending leveling control system comprises a working platform, four suits of landing legs and four suits of support legs, each suit of support legs is connected with the working platform through two extending arms and one suit of landing legs, the landing legs, the support legs and the working platform make up a parallel four-connecting bar mechanism, a horizontal sensor, a proximity switch and a control box are arranged on the top of the working platform, a PLC controller connected with the horizontal sensor and the proximity switch is arranged in the control box, the control box is provided with a display output device and an RS-485 communication cable connected with the PLC controller, the PLC controller controls the extending and retracting of each of the landing legs and the support legs through the proximity switch and the horizontal sensor, and the horizontal precision of the horizontal sensor in the XY direction is displayed in the display output device. According to the four-connecting bar type extending leveling control system, each support leg is provided with one landing leg, the support leg is capable of extending and retracting independently, so that the support leg can be protected effectively, and moreover, the equipment upsetting moment is increased, and the equipment working stability is improved.

The invention provides a wheel rim driven speed reducer of an AGV trolley. The wheel rim driven speed reducer of the AGV trolley is high in transmission efficiency, small in size, large in torque andeasy to mount. The wheel rim driven speed reducer of the AGV trolley comprises wheels, suspending flanges and a speed reducing box body. The suspending flanges are located on the inner sides of the wheels, and the suspending flanges are connected to a vehicle body. The speed reducing box body comprises an input cavity, a transmission cavity and an output cavity. An output part of an output shaft is placed in the input cavity, the input cavity is arranged perpendicular to the output cavity, a planetary speed reducing structure is arranged in the transmission cavity, and a bevel gear shaft is arranged at the output end of the planetary speed reducing structure. The wheel rim driven speed reducer of the AGV trolley also comprises an output shaft, wherein the input part of the output shaft islocated in the output cavity, a bevel gear is mounted on the input part of the output shaft in a sleeving mode, the bevel gear is in engaged connection to a bevel gear corresponding to the bevel gearshaft, and the middle part of the output shaft is supported in an output shaft mounting cavity corresponding to the suspending flanges through a pair of back-to-back conical roller bearings.

The invention relates to the technical field of simulated flight, and specifically discloses a centrifugal flight load and illusion simulation device. The centrifugal flight load and illusion simulation device comprises a transmission supporting system, a rotating arm system, a yawing frame system, a pitching frame system and a cockpit system; wherein the transmission supporting system supports the rotating arm system; the rotating arm system is provided with the pitching frame system and drives the pitching frame system to rotate around a connecting point of the pitching frame system and therotating arm system; the yawing frame system is arranged on the pitching frame system, and the pitching frame system drives the yawing frame system to rotate around a connecting point of the pitchingframe system and the yawing frame system; and the cockpit system is arranged on the yawing frame system, and the yawing frame system drives the cockpit system to rotate around a connecting point of the cockpit system and the yawing frame system. The centrifugal flight load and illusion simulation device has the advantages that a main shaft rotates to generate overload acceleration, three degrees of freedom of yawing, pitching and rolling relative to a human body coordinate system are generated at the tail end of a rotating arm, a trained pilot sits in a cockpit system and bears centrifugal overload acceleration and spatial three-attitude-angle movement, and spatial orientation obstacle simulation training is achieved.

The invention discloses an exposed column foot joint of a composite pier column and a construction method thereof. The column foot joint comprises a GFRP pipe, section steel, a concrete, a shoe beam,a reinforcing bar, a steel bottom plate and an anchor bolt. The section steel is nested in the middle of the GFRP pipe, and the lower end of the section steel is welded with a shoe beam; Boot beam and steel bottom plate welding; The steel base plate is welded with a number of reinforcing bars, section bars and GFRP pipes for pouring concrete and forming a precast GFRP pipe with the steel base plate Concrete-Steel composite column structure; The steel base plate is provided with a plurality of anchor bolt holes, and the steel base plate is connected with the foundation pre-embedded plate through anchor bolts passing through the anchor bolt holes. The invention discloses an exposed column foot joint, which is suitable for prefabricating GFRP-Concrete-Profile steel composite column, clear force transmission, simple structure, easy construction; The GFRP pipe, concrete and section steel are connected with the foundation by welding steel bar on the steel base plate and welding boot beam with section steel. The axial force and bending moment can be transferred effectively by connecting GFRP pipe, concrete and section steel with the foundation.

The invention relates to the technical field of numerical control machine tools, in particular to a spindle feeding device of a double-surface grinding machine. The spindle feeding device of the double-surface grinding machine comprises two feeding units which are symmetrically arranged, wherein the two feeding units are correspondingly applied to two spindle assemblies which are symmetrically arranged; the feeding units comprise box bodies and screw rod parts, wherein first fixing sleeves and second fixing sleeves which are coaxial with the spindle assemblies are arranged in the box bodies, the spindle assemblies movably penetrate through the first fixing sleeves and the second fixing sleeves, the first ends of the spindle assemblies extend out of the first fixing sleeves, and the secondends of the spindle assemblies extend out of the second fixing sleeves; and the screw rod parts are connected with the spindle assemblies through screw rod seats, the screw rod parts are connected with servo motors, and the servo motors drive the spindle assemblies to move in the axial direction of the spindle assemblies through the screw rod parts. According to the spindle feeding device of the double-surface grinding machine, the fixing sleeves coaxial with the spindle assemblies can play the role of sliding guide rails, so that the rigidity and the feeding precision of the spindle assemblies are improved.

The invention discloses a solar energy dual-axis tracking system which comprises a support rod, a solar cell panel and a control system. The top of the support rod is provided with an external gear type slewing bearing. An inner ring of the slewing bearing is connected to the base, and one side of the base is connected to the solar cell panel via two hinges a. An outer ring of the slewing bearingis connected to an azimuth angle tracking mechanism. An elevation angle tracking mechanism is arranged between the other side of the base and the solar cell panel. The control system is electrically connected to the azimuth angle tracking mechanism and the elevation angle tracking mechanism. According to the system, the efficient use of solar energy can be achieved, and the system has good safetyperformance and is not affected by the environment.

The invention discloses a GFRP pipe-concrete-structural steel combination column base joint and a construction method thereof. The joint comprises a GFRP pipe, round steel pipe crossed T-shaped combination structural steel, self-compaction concrete and a box beam; the structural steel is nested into the GFRP pipe, and the lower end of the structural steel is provided with a stretching-out sectionrelative to the GFRP pipe; self-compaction concrete is poured between the structural steel and the GFRP pipe; the lower end of the structural steel is welded to the box beam, and a shearing force nailis welded to the stretching-out section; at the section above the box beam and below the surface of a foundation bearing table, the outer surface of the GFRP pipe-concrete-structural steel combination column is wrapped with two outer sleeve semi-round steel pipes; by adopting the outer sleeve steel pipe mode, shearing force nails are welded to the inner sides of the outer sleeve steel pipes, thestrength of column bottom concrete is improved, and axial force and bending torque of the column can be effectively transmitted to a foundation. By adopting the column foot node mode, axial force canbe transmitted, the large upsetting moment can be resisted, and the requirement for stress, deformation and earthquake resistance of the GFRP pipe-concrete-structural steel combination column can be met.

The invention discloses a novel three-coordinate T-shaped air floating workbench. The workbench comprises a base, two X-axis static guide rails, an X-axis movable guide rail, a Y-axis static guide rail, a Y-axis movable guide rail, a fixed bridge frame, a Z-axis static guide rail and a Z-axis movable guide rail, wherein the two X-axis static guide rails are fixed to the upper end face of the base in parallel, the cross section of each X-axis static guide rail is in a T shape, and the X-axis movable guide rail is arranged on the X-axis static guide rails in a matched mode; the Y-axis static guide rail is arranged in the center of the upper end face of the X-axis movable guide rail, the Y-axis static guide rail is orthogonal to the X-axis static guide rails in direction, and the X-axis movable guide rail is arranged on the Y-axis static guide rail in a matched mode; and the fixed bridge frame is arranged on the upper end face of the X-axis movable guide rail, the Z-axis static guide rail is arranged in the center of the fixed bridge frame, and the Z-axis movable guide rail is arranged in the Z-axis static guide rail in a matched mode. The workbench has important practical significance for promoting the development of ultra-precision machining, ultra-precision measurement and rapid positioning technologies in the field of precision engineering and improving machining precision and the assembling level of a mechanical system.

The invention discloses a mine wheel edge reducer, which includes a planetary frame. A first round hole is formed in the outer side of the large end of the planetary frame, and the axis of the first round hole is a first axis; a second round hole is formed in the inner side of the large end of the planetary frame; the small end of the planetary frame is provided with a third round hole, and the second round hole and the third round hole are located on a second axis; an eccentric shaft is a stepped shaft, and the axis of a small end shaft and a big end shaft is a third axis; a bolt through holeis formed in the axial direction of the eccentric shaft, and the axis of the bolt through hole is a fourth axis; the eccentric shaft is arranged on the second round hole and the third round hole in apenetrating mode; a shaft hole of the planetary wheel is provided with a first tapered roller bearing and a second tapered roller bearing, and the first tapered roller bearing and the second taperedroller bearing are installed on the eccentric shaft; and a locking bolt is arranged on the first round hole and the bolt through hole in a penetrating mode, and the eccentric shaft is fixed to the planetary frame. The invention further discloses an installation method for an eccentric shaft assembly of the mine wheel edge reducer. The mine wheel edge reducer has the advantages of simple structure,high reliability and convenient maintenance.

The invention discloses a six-rope arm head. The arm head comprises an arm head base, a rotation mechanism, and an arm base. The rotation mechanism is fixed below the arm head base, the arm base is fixed to the rotation mechanism through a bolt, the left side of the arm base is connected with a left arm, the right side of the arm base is connected with a right arm, a first dual-connection pulley and a first four-connection pulley are arranged in the arm head base, a second dual-connection pulley and a second four-connection pulley are arranged in the arm base, a third dual-connection pulley isarranged on the left end of the left arm, a third four-connection pulley is arranged on the left of the right arm, the right end of the right arm is connected to the middle of a rear arm, a fourth dual-connection pulley and a fifth dual-connection pulley which are in bilateral symmetry are arranged on the middle of the rear arm, and a sixth dual-connection pulley and a seventh dual-connection pulley which are in bilateral symmetry are arranged on the left end and the right end of the rear arm. According to the six-rope arm head, three hanging points and six steel wire ropes are connected to awork platform, the three hanging points form a stable triangular structure, and the risk of left and right tip-over of the work platform can be avoided.

The invention discloses a composite back-cable-free cable-stayed bridge. The cable-stayed bridge comprises a steel structure main beam, a steel structure stress main tower, a steel structure stress auxiliary tower, a bridge pier structure and a bridge abutment structure, the steel structure stress main tower and the steel structure stress auxiliary tower are sequentially arranged on the steel structure main beam in the bridge direction, and the bridge pier structure and the bridge abutment structure are arranged at the bottom of the steel structure main beam; and a main tower stay cable is connected between the steel structure stress main tower and the steel structure main beam, an auxiliary tower stay cable is connected between the steel structure stress auxiliary tower and the steel structure main beam, a main tower micro-expansion concrete pouring section is poured into the steel structure stress main tower, and an auxiliary tower micro-expansion concrete pouring section is poured into the steel structure stress auxiliary tower. The cable-stayed bridge can meet the use requirement for long-term service; and the landscape performance is good, the construction risk is low, and economical efficiency is good.

The invention discloses six-degree-of-freedom flight simulation equipment, which is characterized by comprising a pitching unit, a yawing unit, a rolling unit, a vertical actuating unit, a variable diameter adjusting unit, a rotating arm and a main driving unit, wherein the main driving unit is used for driving the rotating arm to rotate, the vertical actuating unit is slidably connected with therotating arm, the variable diameter adjusting unit is used for driving the vertical actuating unit to longitudinally slide along the rotating arm, the rolling unit is slidably connected with the vertical actuating unit, and the vertical actuating unit is used for driving the rolling unit to slide up and down; the rotating axis of the rolling unit is longitudinally perpendicular to the rotating arm; the rotating axis of the yawing unit is perpendicular to the rotating axis of the rolling unit; and the rotating axis of the pitching unit is perpendicular to the plane where the rotating axis of the yawing unit and the rotating axis of the rolling unit are located together. Therefore, the technical problems that, for example, six-degree-of-freedom flight simulation cannot be carried out in a centrifugal field in the prior art are solved.

The invention discloses a slewing bearing with a three-row column combined type structure. The slewing bearing comprises an inner ring and an outer ring, wherein the inner ring comprises a first innerring body and a second inner ring body; the first inner ring body and the second inner ring body are overlapped and fixedly connected through screws so as to form the inner ring; the outer ring is arranged outside the inner ring in a sleeving mode; a first rolling body is arranged between the outer side of the first inner ring and the inner side of the outer ring; axis fan-shaped first retainersare arranged at the two ends of the first rolling body; a second rolling body and a third rolling body are arranged between the outer side of the second inner ring and the inner side of the outer ring; axis fan-shaped second retainers are arranged at the two ends of the second rolling body; and radial fan-shaped retainers are arranged at the two ends of the third rolling body. The slewing bearingwith the three-row column combined type structure provided by the invention is suitable for slewing bearings, so that the first rolling body, the second rolling body and the third rolling body are respectively uniform, mutual interference friction during rolling is avoided, the contact stress of a roller path is reduced, and the crushing phenomenon of the edge of the roller path is avoided.