1343 results about "Slider crank" patented technology

A lancing device with automatic stick and lance return features is disclosed. A drive mechanism within the unit comprises a slider-crank linkage combination. It is biased by a spring member to cause automatic firing once a crank member advanced by a user causes movement of an internal linkage member beyond its fully-cocked position. After firing, the lance is withdrawn so as not to pose a threat of secondary injury to the user. In use, the device is substantially silent though its course of operation. Yet, its configuration lends itself to producing a very quick, virtually painless stick with minimal recoil or shock to the device.

Methods, apparatus, and systems for cutting material used in fused deposition modeling systems are provided, which comprise a ribbon including one or more perforations. Material is passed through at least one perforation and movement of the ribbon cuts the material. A further embodiment comprises a disk including one or more blade structures, each forming at least one cavity. Material is passed through at least one cavity and a rotational movement of the disk cuts the material. A further embodiment comprises a slider-crank mechanism including a slider coupled to a set of parallel rails of a guide shaft. The slider moves along a length of the rails to cut the material. Yet another embodiment comprises one or more rotatable blade structures coupled to at least one rod. The rotation of the blade structures causes the blade structures to intersect and cut extruded material during each rotation.

In a motor vehicle, a deflecting device (11) for an offset frontal collision for the motor vehicle is arranged in front of a front wheel (6). In order, in the event of a collision, to safely pivot the front wheel inward, the deflecting device (11) forms a kinematic chain, the coupling link of which is a deflector (12) which, under the action of a frontal impact, is pivoted to the rear and is displaced toward the outside of the vehicle. The kinematic chain is a slider crank mechanism comprising a swinging arm (13) which is pivotable about a bearing (14), a further bearing (16), a sliding guide (16) and the coupling link (12) which is connected to the outer end of the swinging arm at a pivot point (15) and is guided in the further bearing (16).

The invention provides a water plant reaping and harvesting ship which comprises a hull, a water plant cutting device, a water plant conveying device, a water plant collecting device, auxiliary collecting devices and a power device. The water plant conveying device is arranged on an installing frame of the bow in an inclined mode, the lowest end of the water plant conveying device is connected with the water plant cutting device, and the water plant collecting device is arranged at one side of the highest end. The water plant cutting device comprises a bevel gear drive mechanism, a slider-crank mechanism and a cutter reciprocating mechanism. The water plant conveying device comprises a chain plate, a chain wheel, a chain, and a water plant leakage preventing mechanism arranged on the chain plate. The water plant collecting device comprises a collecting hopper, a collecting box, a guide rail, and a collecting platform arranged on the stern. The auxiliary collecting devices are profiling variable wing eccentric collecting wheels or collecting plates arranged on the bow. The water plant reaping and harvesting ship integrates water plant cutting, conveying and collecting, all the devices are convenient to combine, and easy to disassemble, replace and maintain, connection in the whole harvesting process is close, the mechanical degree is high, and the reaping efficiency is far higher than that of manual salvage.

The invention relates to the technical field of plastic spraying equipment for guardrail production and particularly discloses a plastic spraying device which comprises a motor, a clamping mechanism,a groove wheel mechanism, a slider-crank mechanism, a plastic spraying mechanism and a supporting base. The groove wheel mechanism and the slider-crank mechanism are connected with the motor. The plastic spraying mechanism is located above the clamping mechanism. The supporting base is used for supporting the motor, the clamping mechanism, the slider-crank mechanism and the plastic spraying mechanism. The supporting base is provided with a supporting table used for storing a guardrail. The clamping mechanism comprises two clamps located on the two sides of the supporting table. One clamp is connected with the groove wheel mechanism. The plastic spraying mechanism comprises a lead screw, a nut and a plastic spraying gun. The slider-crank mechanism can drive the plastic spraying gun to movein a reciprocating manner. The groove wheel mechanism can drive the guardrail to rotate intermittently. The plastic spraying device is adopted for carrying out plastic spraying on the guardrail, all-dimensional automatic plastic spraying can be carried out on the guardrail, the automation degree is high, the operation cost is low, and the plastic spraying efficiency is high.

Provided is a self-adaptive pneumatic flexible grabbing mechanical gripper based on a metamorphic mechanism. A support is fixedly connected with a base to form a frame-shaped structure, an air cylinder is located in the frame-shaped structure and is fixedly connected with the base, the gripper comprises a slider crank mechanism and the metamorphic mechanism, chunks are fixedly connected with the metamorphic mechanism, a workpiece is a grabbing object, and contact force sensors are arranged on the surfaces, making contact with the workpiece, of the chucks. Connecting rods are connected to an air cylinder piston through revolute pairs A, the connecting rods are movably connected with the metamorphic mechanism, and the slider crank mechanism is formed by the connecting rods, the air cylinder piston and connecting rods 1 in the metamorphic mechanism, the air cylinder piston is the slider of the slider crank mechanism, the connecting rods are movably connected with the air cylinder piston, and a force feedback control system is connected with the contact force sensors and the air cylinder. Compared with the prior art, the self-adaptive pneumatic flexible grabbing mechanical gripper based on the metamorphic mechanism achieves the purposes of being little in drive, simple in control, low in cost and high in reliability, having certain flexibility, and being capable of self-adaptively grabbing objects in complex space geometrical shapes or simulating the movement characteristics of human hands.

The invention discloses a platform type auxiliary rehabilitation training device for a hemiplegic finger of a patient. The auxiliary rehabilitation training device for the hemiplegic finger of the patient comprises a finger training mechanism, a hybrid driving mechanism, a sensing device and a control system, wherein the hybrid driving mechanism comprises a motor and a magnetorheological fluid damper, the finger training mechanism comprises a slider-crank mechanism and a finger moving device which can rotate freely and slide forwards or backwards under the driving of the slider-crank mechanism, the control system comprises an upper computer and a lower computer, the PID control algorithm is configured in the lower computer, and a virtual scene module and a virtual reality feedback force module are arranged in the upper computer. By the adoption of the auxiliary rehabilitation training device for the hemiplegic finger of the patient, combination of active training and passive training can be achieved for the patient, the mechanical structure, the hybrid driving mechanism, the sensing device and the control system cooperate with one another to achieve man-machine interaction, a training process is controlled strictly, and the interestingness of the training process is improved by the adoption of game images.

The invention relates to an automatic feeding pastry slicer and belongs to the technical field of food processing. The automatic feeding pastry slicer comprises a crank block slicing mechanism, a crank rocker feeding mechanism and a power device, wherein a slicer crank II and a slicer crank I are driven to rotate by a crank connecting shaft of the crank block slicing mechanism; a slicer is driven to vertically move for slicing by the slicer crank II and the slicer crank I through a slicer connecting rod; the crank rocker feeding mechanism comprises a feeding crank, a feeding connecting rod, a feeding rocker and a transmitting device; the feeding crank is driven to rotate by the crank connecting shaft; a crank rocker is composed of the feeding crank, the feeding connecting rod and the feeding rocker; one end of the feeding rocker is connected with friction wheels of the transmitting device and is used for driving the friction wheels to rotate through a friction force of a friction wheel wrench mounted on the feeding rocker; a conveying belt is driven to rotate by the two friction wheels. Through the matching of the crank block slicing mechanism and the crank rocker feeding mechanism, automatic feeding and quick efficient slicing are finished, and the working efficiency is increased.

The invention discloses a leg bouncing mechanism for a frog-type robot. A tension spring is sleeved on a guide rod. The tail end of the spring is connected with a hip joint, and the upper end of the spring is connected with a slider. The guide rod, the slider, an oblique support rod, a thigh and joints form a crank slider structure. The leg part consists of a thigh, a shank, a connecting rod and joints; and the leg structure comprises the combination of two four-rod mechanisms. The stretch and contraction of the leg mechanism can be adjusted by controlling the slide of the slider on the guide rod. The sole of the robot is arc-shaped, and an arch support is arranged on the sole. The mechanical structure of the invention simulates skeletons of a frog, optimizes the leg structure, improves the utilization ratio of energy of power elements, improves the flexibility of the mechanical structure, and improves the jumping ability of the robot.

The invention provides a double-shaft rotating table for adjusting satellite postures, which is used for the purposes of satellite assembly, test, experiment and the like. The rotating table comprises a rotating table body and a position pitching system, wherein the table body is provided with a driving wheel group so that the rotating table can flexibly move and is more convenient to use. The weight is lowered due to the adoption of the form of a slider-crank mechanism. A large portion of pressure is bore by guide rails, and the burden of a pitching pivot is lowered. Besides, a lever transmission mode is adopted, the pressure of a pitching motor and a speed reducer is largely reduced, and the bearing capability of the rotating table is improved. As a connecting rod in the slider-crank mechanism is used as the pitching system, the pitching pivot moves along an arc relatively to the table body with the variation of a pitching angle, and the arc takes the length of a crank as a radius. When the pitching angle is 0, the height of the pitching pivot is in a lowest position, so that the height of the whole equipment is lowered, and occupation space is reduced, thus facilitating storage. Transition rings are designed, different types of satellites are fit through the change of the transition rings, universality is improved, and resources are saved.

The invention discloses a rolling chain type conveyer, which is used for orientating and transporting Chinese dates, namely horizontally placing the Chinese dates along an axial direction and feeding in a parallel manner. A hairbrush on the upper part of a roller allows only one row of Chinese dates to pass through; a friction plate on the lower part of the roller is used for realizing rotation of the roller; two rows of chains and four rollers are used for positioning and clamping the Chinese dates when the kernels are removed, thereby providing a condition for punch kernel-removing; conveying, kernel-removing and slicing are driven by a same motor; synchronism is excellent; a centric slider crank mechanism is used as a kernel-removing mechanism; and after kernel-removed Chinese dates are moved to the tail end of a conveying chain, the Chinese dates are guided to move to a cutter slot type feeding wheel by an adjustable protecting plate and then are sliced by a blade, thereby forming a plurality of concentric annular slices. The integration of orientating, kernel-removing and slicing is realized.

The invention discloses a flapping wing robot capable of automatically adjusting the flapping amplitude values of a left wing and a right wing. The flapping wing robot can automatically adjust the flapping amplitude values of the left wing and the right wing while the flapping phase of the left wing and the right wing is not changed. The flapping wing robot comprises a machine frame device, a drive device, an amplitude value adjusting device and swinging devices. Under the effect of a drive motor, the drive device can drive a slider through an off-center slider-crank mechanism to reciprocate vertically along a fixed guide rail, the amplitude value adjusting device is driven to drive the two symmetrically-arranged swinging devices to swing around a fixed point, and the wings flap. The amplitude value adjusting device can move leftwards and rightwards under the effect of a gear and a rack, so that the flapping amplitude values of the wings are changed, and the left wing and the right wing swing at the same phase and different amplitude values. By the adoption of the flapping wing robot, under the condition that the left wing and the right wing flap at the same phase, a rudder drives the amplitude value adjusting device to move to achieve the purpose that the left wing and the right wing flap at the different amplitude values, and the flapping wing robot can be applied to automatic adjustment of the aerial pose of the flapping wing robot.

The invention relates to a novel automatic feed plate cutting mechanism, which consists of a speed reducer, a crank block mechanism, a press-lift roller mechanism, an upper shaft roller, a lower shaft roller, a stepping motor and a programming controller, wherein the speed reducer is connected with the motor and transmits the motion of the motor to a main shaft component through a belt wheel and a large belt wheel of the motor; a pair of eccentric wheels in the crank block mechanism is fixed at both ends of a main shaft; the eccentric wheels drive a top rest through a connecting rod, so that the top rest reciprocates up and down; a pressure feeding mechanism is connected with the top rest, and consists of a pressure plate and a pressure spring; the stepping motor drives the lower shaft roller through a chain wheel, and is controlled by the programming controller; and both ends of the lower shaft roller and the upper shaft roller are engaged by a gear set. In the press-lift roller mechanism, an adjustable slide block is driven by an adjusting screw rod to ascend and descend, so that the upper shaft roller and the lower shaft roller maintain an appropriate gap; and plate materials are pressed and loosened by using the pressure plate, and simultaneously, the plate materials are convenient to feed.

The invention discloses a novel lower limb joint mechanism of a reclining-type Lower limb rehabilitation robot. The mechanism comprises three joint mechanisms including a hip joint mechanism, a knee joint mechanism and an ankle joint mechanism, and three connection rod mechanisms including a thigh link mechanism, a crus link mechanism and an ankle-high link mechanism. The hip joint mechanism, the knee joint mechanism and the ankle joint mechanism can be conveniently and respectively optimized by adopting different slider-crank mechanisms. Rotary nut-type ball screws are respectively adopted by all the joint mechanisms to form sliding pairs of the slider-crank mechanisms; all the joint mechanisms are respectively provided with a pull pressure sensor which can be used for indirectly measuring the torque of a corresponding joint; each joint is provided with a direct-current motor which can be used for independently driving the corresponding joint mechanism; and the direct-current motors are respectively provided with a position sensor. All the joint mechanisms respectively have a center of rotation, and the thigh link mechanism, the crus link mechanism and the ankle-high link mechanism are adjustable in length, so that the lower limb joint mechanism can be kept highly consistent with lower limbs of a human body.

The invention discloses a fatigue test system for a bridge and a pavement with roller load. The fatigue test system comprises a counterforce foundation, a combined bearing frame, a tested sample and a loading trolley, wherein the tested sample is fixed on the counterforce foundation; the counterforce foundation and the combined bearing frame are fixed mutually; the loading trolley is arranged on the tested sample; a horizontal cross beam is arranged on the combined bearing frame; the top of the loading trolley is connected onto the horizontal cross beam and the loading trolley can move leftwards and rightwards relative to the horizontal cross beam; a servo motor is further arranged on the horizontal cross beam and drives the loading trolley to move leftwards and rightwards through a slider-crank mechanism; an electro-hydraulic servo actuator on the loading trolley can control rollers of the loading trolley to move vertically. The fatigue test system for the bridge and the pavement with the roller load can perform full-size bridge and pavement fatigue tests and guarantees safety of the bridge and the pavement.

The invention provides an industrial robot of six-degrees of freedom. The industrial robot comprises a base, a first component, a second component, a third component, a fourth component, a fifth component and a sixth component, wherein the fifth component and the sixth component are connected with each other through double revolute pairs; the sixth component comprises a lower seat and four third connecting rods; and a first linear module and a second linear module drive a first crank shaft-sliding block structure and a second crank shaft-sliding block structure to conduct linear movement respectively, so as to drive a first connecting rod and a second connecting rod to conduct linear movement respectively, drive a first actuating arm and a second actuating arm to rotate respectively, and drive the fifth component and the sixth component to rotate together. According to the invention, a serial mechanism and a serial mechanism are combined to design the industrial robot with parallel large rotation wrists, so as to realize large angle rotation; and due to the parallel wrists, singular points which are inevitable to a common industrial robot of six-degrees of freedom are avoided. Therefore, the movement of the robot is quicker and smoother, and the robot can be widely applied to industrial operation.

The invention relates to a soil strength test board for a wheel. The soil strength test board for the wheel comprises a test board bracket, a wheel and a soil groove body which interacts with the wheel, the soil groove body is arranged at the lower part of the inside of the test board bracket, and the wheel is located at the upper surface of the soil groove body in a rolling press mode; the wheel is connected below a variable load mechanism through a steering mechanism, and the variable load mechanism is connected with a driven wheel drive mechanism through vertical and horizontal moving mechanisms so as to be movably hanged on two upper beams of the test board bracket; the rotating shaft of the wheel is directly connected with an active wheel drive mechanism. The soil strength test board for the wheel can use a counterweight block to change the weight of the soil strength test board for the wheel under an offline state so as to simulate the acting force between the wheel and the ground under different vehicle weights; a slider-crank mechanism changes the distance between two isotropic magnets so as to change the repulsive force there-between to simulate the online real-time vertical load change of the wheel of an air cushion vehicle; the active wheel drive mechanism and the driven wheel drive mechanism simulate the active movement form and driven movement form of the wheel.