65results about How to "Adjust the speed of movement" patented technology

The invention discloses a three-dimensional space imaging interaction method and a three-dimensional space imaging interaction based on ultrasonic wave. The three-dimensional space imaging interaction method is different from an existing holographic imaging technology. The method comprises the following steps: firstly establishing the three-dimensional coordinates of a space to generate a target three-dimensional space, and emitting ultrasound microbubbles capable of sensing with an ultrasonic wave field; then, forming the ultrasonic wave field in the target three-dimensional space through the ultrasonic wave, generating a potential well position in the target three-dimensional space, controlling the ultrasound microbubbles to move in the target three-dimensional space and to be stabilized at the position, simultaneously coloring the ultrasound microbubbles by adjusting laser, and thus forming a three-dimensional image in the target three-dimensional space. Furthermore, the three-dimensional images are converted into 3D pictures and the 3D pictures are shown for a user by continuously repeating the steps. Through the 3D pictures shown for the user in the method and the system, the user can be interactive with the 3D pictures, so that the user can feel the real touch of the 3D pictures in the interaction process, and the original structures of the three-dimensional images can also be maintained.

The invention relates to a drive having an emergency closing function, comprising a movable coupling device, which has an emergency spring clamped between an input-side and an output-side spring system. The emergency spring is preferably a compression spring moved along with the coupling device. A distance of the spring systems is defined by means of a locking device in normal operation of the drive, wherein the emergency spring can relax for an emergency function or emergency movement of the drive after the locking device is released or unlocked. According to the invention, the locking device is operated or can be triggered hydraulically or pneumatically and/or magnetically.

The invention relates to an automatic blackboard wiping device and belongs to the field of image recognition and automation. The automatic blackboard wiping device uses a camera to identify a wiping area and controls a blackboard eraser to identify area dust by a microcomputer combining an ingenious mechanical structure. The traditional way of wiping is time-consuming and harmful to bodies of wiping people; and existing automatic wiping devices in the market are mostly for all-area wiping, and the existing automatic wiping devices have no selectivity, low efficiency, long operation time and waste energy in the wiping process. The automatic blackboard wiping device comprises an intelligent image recognition module, a microcomputer control module and a mechanical motion structure module, thewhole situation of a blackboard is captured by the camera, and the information is fed back to a microcomputer, the microcomputer can intelligently recognize the wiping area through binarization processing of the picture and then controls a motor to rotates to control the blackboard eraser to wipe the blackboard purposefully. The main purpose of the automatic blackboard wiping device is to replacethe traditional blackboard eraser wiping method and realize efficient and intelligent automatic wiping of the blackboard.

The invention discloses an air canon with an adjustable variable-capacity high-pressure cavity, which belongs to the technical field of air shots. The external high-pressure cavity of the air cannon consists of a high-pressure cavity and a capacity-adjustable mechanism set. The capacity-adjustable mechanism set is structurally characterized in that a movable screw component is mounted on a screw support, a hand wheel component is mounted on the movable screw component, the front of the movable screw component penetrates through the rear wall of the external high-pressure cavity to be integrally connected with a piston in the high-pressure cavity, and the front wall of the external high-pressure cavity is provided with a high-pressure air through hole. The air cannon has the advantages that shortages or defects of existing air cannon due to fixed capacity of the high-pressure cavity can be overcome, initial volume of the high-pressure cavity can be changed by increasing or reducing capacity of the external high-pressure cavity, movement speed of shots in a shot tube can be adjusted within a certain range to realize continuous loading of low acceleration of different shots, and high impact speed and impact acceleration can be generated to meet the requirement of realizing high shot impact speed within a limited air pressure range. The air cannon with the adjustable variable-capacity high-pressure cavity is worthy of application and popularization.

The invention relates to a device and a method for actively inhibiting the rollback movement of a parasitic motion principle piezoelectric actuator, and belongs to the field of precision machinery. The device comprises a foundation bed, a movable sub unit, a driving unit and a pre-pressure regulation unit, wherein the movable sub unit is installed on the boss of the foundation bed; the pre-pressure regulation unit is fixed on the foundation bed through bolts; and the driving unit is installed on the pre-pressure regulation unit. By use of the method, through a synergistic effect of a driving piezoelectric stack and an improving piezoelectric stack in the driving unit, the pressure of the parasitic principle piezoelectric actuator is constant in a driving process so as to realize the activeinhibition of the rollback movement. The device and the method have the advantages that the rollback movement can be obviously inhibited, ideal stepping movement is realized, and an influence generated by system nonlinearity can be eliminated to a certain degree so as to be convenient for subsequent precise control. The device and the method have a wide application prospect in the fields including precise and ultraprecise positioning, precise measurement, precise machining and assembling, biological inheritance engineering, material surface performance detection and the like.

The invention belongs to the technical field of robots and particularly relates to a transporting robot based on universal joints. The robot comprises a vehicle body and four driving wheel units. Every two corresponding driving wheel units are arranged in one set and symmetrically mounted on the two sides of the vehicle body, and the two driving wheel units on one side of the vehicle body are located at the two ends of the vehicle body. The transporting robot has the functions of advancing, cornering and time division driving of the four driving wheel units; the vehicle body has the function of supporting the driving wheel units to move; the driving wheel units have the function of driving the transporting robot to move; motors have the effect of supplying power to the driving wheel units; and first electromagnets, second electromagnets and third electromagnets which are mounted on motor shafts have the effects of exerting magnetic effects on corresponding first permanent magnets, second permanent magnets and third permanent magnets correspondingly.

The invention discloses a surface polishing and grinding process and equipment used for a long rod part with a specially-shaped section. The equipment comprises a belt grinder, a travelling mechanismand a clamping mechanism with a turnover function, wherein the travelling mechanism comprises a slide rail and a slide base mounted on the slide rail; the slide base is driven by a linear motion drivedevice to move back and forth along the slide rail; the belt grinder is fixedly mounted on the slide base; a belt grinder contact wheel presses an abrasive belt to a to-be-polished and to-be-grindedsurface or edge of a workpiece for polishing and grinding the to-be-polished and to-be-grinded surface or edge of the workpiece; a supporting mechanism is arranged between a drive rotary mechanism anda driven rotary mechanism; the workpiece is firstly placed onto the clamping mechanism, and the travelling mechanism drives the belt grinder to move back and forth for polishing and grinding the workpiece; after one surface is polished and grinded, turnover can be performed through a turnover mechanism; and after polishing and grinding are completed, the clamping mechanism is loosened and the supporting mechanism is withdrawn, so that the workpiece can be taken out. The surface polishing and grinding equipment is consistent in polishing and grinding effect of each part of the workpiece, is good in polishing and grinding quality of the workpiece, is stable in performance, and can be suitable for various long rod parts with specially-shaped sections.

The present invention discloses a speed self calibration method and device and an intelligent device. The speed self calibration method is configured to calibrate the speed of a target device which is provided with wheels and a motor controlling the rotation of the wheels. The method comprises: dividing a plurality of types of ground environments according to the conditions of the friction of the wheels and the ground; monitoring the type of the ground environment where in the target device is located in real time; sending corresponding control signals to the motor controlling the rotation of the wheels according to the type of the ground environment where in the target device is located to allow the target device to drive in a preset speed so as to allow the target device to regulate the motion speed itself according to different grounds.

The invention discloses a spherical water sports device with an adjustable center of buoyancy and center of gravity. The spherical water sports device comprises an outer spherical shell. The outer spherical shell is internally provided with an inner spherical shell in a sleeving mode, and a water storage bin is arranged in the middle of the outer spherical shell. The inner spherical shell and theouter spherical shell are fixedly connected through a spherical shell connecting module. A horizontal rotating shaft is connected to the inner wall of the inner spherical shell. A rotating motor is connected to one end of the rotating shaft, and a drive control box is fixedly connected to the middle of the rotating shaft. A first lead screw module and a second lead screw module are connected to the lower part of the drive control box separately, and a horizontal third lead screw module is slidably connected between the first lead screw module and the second lead screw module. The third lead screw module is provided with a power supply box and a counterweight block. Three driving units are controlled by a drive motor to change the position of the center of gravity of the spherical water sports device, so that the spherical water sports device rotates under the combined action of an eccentric moment and an inertia moment to achieve water sports. Both the position of the center of gravityand the position of the center of buoyancy of the spherical water sports device can be controlled and adjusted, so that good movement flexibility and high stability are achieved.

The invention discloses a massage seat control method and device, a massage seat and a system. The massage seat comprises one or more massage movements, one or more motors and one or more current sensors, and the current sensors are used for detecting working current values of the motors. The massage seat control method comprises the steps that under the situation that the massage movements are driven by the motors to generate motion corresponding to massage instructions, the working current values, detected by the current sensors, of the motors are obtained; the working current values of themotors are compared with a preset current value, and a comparison result is obtained; and when the comparison result is that the working current values of the motors are greater than the preset current value, the rotating speeds of the motors are adjusted to increase the motion speeds of the massage movements, and under the situation of the comparison result that the working current values of themotors are less than the preset current value, the rotating speeds of the motors are adjusted to decrease the motion speeds of the massage movements.

A resistance device of an isokinetic exercise training instrument comprises a fixing frame, wherein the fixing frame is provided with a rotary lead screw sleeved with a pull pipe, one end of the pull pipe is fixedly connected with a lock block, the lock block is provided with a screw hole, the lock block is movably arranged on the lead screw in the mode that the screw hole is combined with the lead screw in a screwed mode, one end of the lead screw is in transmission connection with a motor shaft of a generator through a speed change mechanism, and an electricity output end of the generator is electrically connected with an automatic load adjustment device. The resistance device of the isokinetic exercise training instrument has the advantages that linear movement is converted into rotation movement through reverse circulation of a lead screw guide rail so that linear movement can be converted to drive the generator; resistance is applied through the principle of the generator, and generated electricity can be collected while training is carried out.

The invention relates to the technical field of pipe cleaning, and discloses a flue dirt removing device and a flue dirt removing method. The flue dirt removing device consists of a sand storage device and a sand pipe, wherein the sand storage device is connected with a nitrogen conveying pipe; an outlet end of the sand storage device is connected with one end of the sand pipe through a control valve; and the other end of the sand pipe is connected with a flue at the top end of a furnace body of a chlorination furnace. Sand moving with high speed is used for entering the flue in the tangential direction of the inner wall of the flue to flush dirt attached on the inner wall of the flue, so that the dirt on the inner wall of the flue is effectively removed, the stable operation of a chlorination furnace system is guaranteed, the working efficiency is improved, and the environmental pollution caused by the flue detection is reduced; and the flue dirt removing device and the flue dirt removing method can be widely applied to the cleaning operation of inner walls of various pipes, and in particular, are more prominent in dirt removing effect of the flue transversely arranged.

The invention relates to a mechanical arm safety trajectory tracking control method based on a sliding mode. The method comprises the following steps that 1, the angle, the angular speed and the input torque estimation information currently corresponding to each joint in the mechanical arm are obtained, so that the disturbance torque estimation value currently corresponding to each joint in the mechanical arm can be obtained through calculation; 2, a track scaling function is determined, track interpolation time of the mechanical arm is determined according to the track scaling function, and the actual tracking track of the mechanical arm is obtained through the track interpolation time of the mechanical arm; and 3, the expected joint angle, angular velocity and angular acceleration corresponding to the actual tracking trajectory are input into a sliding mode controller, trajectory tracking control is conducted on the mechanical arm through the sliding mode controller, and therefore high-precision trajectory tracking of the mechanical arm under the action of external disturbance is achieved. The position tracking precision can be improved, work task interruption caused by collision is avoided, and safety and reliability are achieved.

The invention provides a bucket arm cylinder control system, a control method and an excavator, and relates to the technical field of engineering machinery. The bucket arm cylinder control system involves a bucket arm cylinder, flow control parts, a pressure sensor and a controller, wherein the flow control parts and the pressure sensor are connected with the controller; and the flow control partsare arranged on an oil inlet path of the bucket arm cylinder, the pressure sensor is used for detecting pressure data in a large cavity of the bucket arm cylinder and transmitting the pressure data to the controller, and the controller receives the pressure data and controls the flow of the flow control parts according to preset data. Through the bucket arm cylinder control system, the technicalproblem of the energy waste existing in an excavator in the prior art is solved.

The invention discloses an automatic lubricant pump for hydraulic equipment, belonging to the technical field of lubricant pumps. The automatic lubricant pump is characterized by comprising a pump body, a first installing groove is formed in one end face of the pump body, a working chamber is arranged at the bottom in the first installing groove, and a cylinder body is arranged in the first installing groove; a second installing groove, opposite to the first installing groove, is arranged in the other end face, opposite to the first installing groove, of the pump body, a pressure regulating mechanism is arranged in the second installing groove, a pressure conducting mechanism connected with the pressure regulating mechanism is arranged in the cylinder body, and an external pressure oil inlet communicated with the pressure conducting mechanism is arranged in the outer end face of the cylinder body; an oil inlet passage and an oil outlet passage are respectively arranged on the side walls of the working chamber, the oil inlet passage is connected with an automatic oil inlet valve, and the oil outlet passage is connected with an automatic oil outlet valve; the invention aims at providing the automatic lubricant pump for the hydraulic equipment, which is compact in structure and small and exquisite in size, can automatically adapt to the load conditions and has a good effect; the automatic lubricant pump is used for the lubrication for moving parts of the hydraulic equipment.

The invention discloses a fresh rice freezing hulling device. The device comprises a hulling unit and further comprises a freezing unit, a conveying unit used for conveying grains is connected between the freezing unit and the hulling unit, the hulling unit comprises an inner barrel and an outer barrel which rotate reversely, openings are formed at the two ends of the outer barrel, and the outer barrel is concentrically arranged outside the inner barrel in a sleeving manner. A spiral barrier strip is arranged between the outer barrel and the inner barrel, the spiral barrier strip is spirally arranged from top to bottom, the spiral barrier strip is fixedly connected with the inner wall of the outer barrel, the freezing unit comprises a freezing barrel and a refrigerating sheet, the conveying unit comprises a lifting barrel and a lifting auger, and an adjusting assembly used for controlling the discharging speed is installed at the top of the lifting barrel. The adjusting assembly comprises an adjusting sleeve, a first connecting rod, a mounting rod and an elastic supporting net, the inner cylinder, the outer cylinder and the spiral barrier strip are arranged, the number of hulled grains is large, the working efficiency is improved, the grain movement speed is decreased, it is guaranteed that the grains can be fully hulled, and the quality of fresh rice is improved.

The invention relates to a rotary agricultural and forestry waste continuous pyrolysis device with a heat energy self-supply function. The rotary agricultural and forestry waste continuous pyrolysis device is characterized by comprising a crushing feeding device, a rotary pyrolysis reactor, a pulse combustion heat supply device, a coke collecting device, a heat exchange device and a control system, materials are continuously fed into the pyrolysis reaction chamber, a certain angle is formed between the pyrolysis reactor and the horizontal plane, and the rotary reactor can make the materials roll up and down and move downwards. Pyrolysis gas generated in the material pyrolysis process provides fuel for the pulse combustor, combustion smoke provides pyrolysis media and heat for the pyrolysisfurnace, and pyrolysis gas combustion heat supply and combustion smoke cyclic utilization are achieved. The design structure is compact, feeding, pyrolysis, heating, collection and heat exchange devices are combined, and continuous and efficient pyrolysis and heat energy self-supply of waste can be achieved; and meanwhile, the heating device is communicated with the pyrolysis area, gas obtained after natural gas and pyrolysis gas are combusted serves as a pyrolysis medium, no extra pyrolysis medium is needed, and the operation cost of the pyrolysis system is greatly reduced.

The invention discloses a laser cutting machine. The laser cutting machine comprises a cutting box and an auxiliary worktable, wherein a side positioning device is arranged between the cutting box and the auxiliary worktable and comprises a pneumatic portion and a sliding portion; the pneumatic portion comprises a bottom plate, a cylinder and a positioning block; the bottom plate is fixed on a side surface of the auxiliary worktable; the cylinder penetrates in the side surface of the auxiliary worktable; the positioning block is fixed on a side wall of the cutting box; a cylinder supporting rack which is fixedly connected with the bottom plate is arranged at an end of the cylinder; a piston rod of the cylinder is connected with a positioning plate; the shape of the positioning block is matched with that of the positioning plate, so that a linear kinematic pair is formed; the sliding portion comprises a guide track and a sliding block; the guide track is fixed on the side surface of the worktable; and the sliding block slides on the guide track and is fixedly connected with the positioning plate. In an exchanging jack-up process of the cutting box, the positioning plate extends and is in contact with the positioning block by using the cylinder, and the cutting box which is restrained by the positioning plate moves linearly.

The invention provides a movement shifting claw positioning tool. The movement shifting claw positioning tool comprises a base, a clamping assembly, a jacking plate and an extrusion assembly. The base comprises a bearing seat, a connecting shaft and a center block, and the bottom face of the center block is connected with the top face of the bearing seat through the connecting shaft. The clamping assembly comprises a guide rod, a limiting plate and a clamping block, one end of the guide rod is connected with the side wall of the center block, the other end of the guide rod is connected with the limiting plate, and the clamping block is arranged on the guide rod in a sliding manner. The jacking plate is arranged on the connecting shaft in a liftable manner, and a separation block is arranged on the top face of the jacking plate. The extrusion assembly comprises an adjusting plate, an extrusion sleeve and an operation rod, the adjusting plate is arranged at one side of the limiting plate, one end of the operation rod is inserted into the extrusion sleeve, an operation block is arranged on the operation rod, and a driving groove and an annular cutting groove used for containing the operation block are formed in the extrusion sleeve. According to the movement shifting claw positioning tool, the loading and unloading difficulty of a shifting claw can be reduced, and the shifting claw is prevented from being damaged.