21 results about "Dashpot" patented technology

A hinge comprising: a first hinge member (110) comprising a cylinder barrel (117) having a longitudinal direction (118); a second hinge member (111) pivotably mounted on the first hinge member (110); and a dashpot interposed between said hinge members (110, 111) and configured for damping a closing movement of said closure member. The dashpot comprises a closed cylinder cavity formed within the cylinder barrel (117); a damper shaft (124) which extends into the cylinder cavity and is connected to the second hinge member (111); and a piston (147) within said cylinder cavity. The hinge members (110, 111) are made of a synthetic material and the damper shaft (124) is made of metal.

The invention discloses a rapid modeling method of a carrier rocket rigid-elastic-shake coupling model, which comprises the following steps of: establishing a motion equation of a carrier rocket: establishing a mass center motion equation of the carrier rocket according to a Newton's second law, establishing a motion equation around the mass center of the carrier rocket according to a moment of momentum theorem relative to the mass center, and simplifying the carrier rocket into a one-dimensional beam model; establishing an elastic vibration equation; solving force, torque and generalized force thereof; solving expressions of gravity, thrust, control force, engine swing inertia force, aerodynamic force, aerodynamic damping force, wind disturbance force, force, torque and generalized force thereof; propellant shaking is analyzed by adopting a spring-mass-damper equivalent model; propellant shaking equations in the pitching direction and the yawing direction of the carrier rocket are established, and inertia force, inertia moment and generalized force generated by propellant shaking are established; the obtained various forces, moments and generalized forces and inertia forces, inertia moments and generalized forces generated by shaking of a propellant are substituted into a motion equation of the carrier rocket to obtain a mass center motion equation, the motion equation of the rocket is around the mass center, and a six-degree-of-freedom nonlinear total dynamical model of the carrier rocket is established when the rocket tilts and tilts; elastic vibration equations in three directions of yawing and rolling are established; and solving the carrier rocket rigid-missile-shake coupling model. According to the method, rapid numerical simulation can be carried out on the carrier rocket rigid-missile-shake coupling model, the influence of a solving result on carrier rocket attitude change is analyzed, and a foundation is laid for navigation and attitude control design of the carrier rocket.

A pedal simulator comprises the following: a pedal simulator piston configured to move in a linear direction based on a rider's pedal movement; a first stopper rotatable clockwise or counterclockwise, configured to provide tactile feedback from the pedal to the rider based on the rotation of the first stopper; a first damper arranged within the pedal simulator piston to be spaced from the first stopper by an air gap, configured to contract or expand based on movement in the linear direction; and a second stopper configured to be effectively coupled to the first stopper to cause the air gap to change based on the rotation of the first stopper, thereby changing the pedal's tactile feedback based on the change in the air gap.

Tugger line system (3) for stabilization of a load suspended in an offshore crane system, comprising: a tugger line (5) to be engaged with the load (L); a winch (6) fixed or fixable in the offshore crane system (4) and configured to reel the tugger line in or out from the winch so as to vary a working length of the tugger line; and a damper assembly (8) engaged or engageable with the tugger line between the winch and the load, wherein the damper assembly, when engaged, is configured to passively attenuate fluctuations of tension in the tugger line, said fluctuations being induced by movement of the load with respect to the winch.

The utility model relates to the technical field of automation equipment, and provides a cigarette carton arraying and conveying device which comprises a conveying platform, a plurality of supporting rods are fixedly connected to the bottom of the outer surface of the conveying platform, two springs are fixedly connected to the interiors of the supporting rods, two dampers are fixedly connected to the interiors of the supporting rods, and the springs are fixedly connected to the interiors of the dampers. During use, the motor is started through an external power supply, the motor drives the reciprocating screw rod to rotate, at the moment, the sliding strip slides on the outer surface of the reciprocating screw rod in a reciprocating mode under the limitation of the conveying roller, the packaged objects on the conveying roller are pushed to move while sliding, and at the moment, the packaged objects move on the upper surface of the conveying roller; and meanwhile, the infrared detector detects the packing materials, completeness of the packing materials is ensured, the quality of the packing materials is improved, the packing materials are moved through the rollers at the bottom after transportation is completed, lifting by workers is not needed, and the burden of the workers for moving the device in a workshop is relieved.

Mailbox flap assembly wherein the mailbox (A1) has a front-facing insertion opening (A2) and an inside of the mailbox (A3), comprising a support body (30), a first swivel arm (10), a second swivel arm (20), a drop flap (40) and a spring assembly, wherein the support body (30) is assigned to the insertion opening (A2) and is arranged for fixed attachment to the inside of the letterbox (A3), and has a first pivot bearing receptacle (31) and a second pivot bearing receptacle (32) with a common pivot axis (33), wherein the first pivot arm (10) is assigned to the first pivot bearing receptacle (31) and has a first bearing section (11) and a first fastening section (12), wherein the first bearing section (11) is pivotably arranged about the first pivot bearing receptacle (31) and the first pivot bearing receptacle (31) and the first bearing section (11) together form the first pivot bearing (13) and wherein a rotation damper (50) is associated with the first pivot bearing (13), wherein the first fastening section (12) is connected on the inside to a drop-in flap (40) at its first end section (41), wherein the second swivel arm is assigned to the second swivel bearing receptacle (32) and has a second bearing section (21) and a second fastening section (22), wherein the second bearing section (21) is pivotably arranged about the second pivot bearing receptacle (32) and the second pivot bearing receptacle (32) and the second bearing section (21) together form the second pivot bearing (23) and wherein a spring assembly is assigned to the second pivot bearing (23), wherein the second fastening section (22) is connected on the inside to the second end section (42) of the deposit flap (40), wherein the spring assembly is designed for a locking preload and comprises a torsion spring (60), a spring attachment (70), a lateral retaining plate (80) and a clamping plate (90), wherein the torsion spring (60) has a helical body (63), a first anchor arm (51) which engages the second pivot arm (20), and a second anchor arm (62), wherein the helical body (63) is arranged coaxially to the pivot bearing axis (33), wherein spring attachment (70) corresponds to the second pivot bearing receptacle (32) and together with it radially encompasses the helical body (63), wherein the lateral retaining plate (80) is arranged axially on the outside of the second pivot bearing receptacle (32) and has a support pin (81) which is arranged concentrically in the helical body (63), wherein the clamping plate (90) is detachably connected to the second pivot bearing receptacle (32) and has a plurality of lateral receiving slots (91) for a variable arrangement of the second anchor arm (62) of the torsion spring (60).

The utility model discloses a luggage with a protection function, and relates to the technical field of luggage. The luggage comprises a luggage body, protective frames are mounted on two sides of the bottom of the luggage body, two moving wheels are mounted at the bottoms of the two protective frames, contraction assemblies are arranged between the two moving wheels and the protective frames, and protective assemblies are arranged on two sides of the bottoms of the two protective frames and the luggage body. The movable wheels can be stored in the protection frame through the contraction assembly, the movable wheels can be prevented from protruding and being damaged when the luggage is carried, the damper and the buffer spring in the protection assembly act together, and when the luggage passes through an uneven road surface or goes up and down steps, the movable wheels can be prevented from being damaged. The impact force on the outer wall of the lower part of the luggage from the raised part of the ground or the step edge is effectively buffered, the surface of the luggage is prevented from being scratched or damaged, the service life of the luggage is prolonged, and the durability of the product is improved.

The present application relates to the technical field of space robot, in particular to a kind of three degrees of freedom soft docking joint, including transmission mechanism, damping buffer component and sensing component.The transmission mechanism includes clutch, cross shaft structure, Z-axis rotating shell, Y-axis rotating shell etc.;Damping buffer component includes rotary magneto-rheological damper and torsional spring mechanism etc.;Sensing component includes encoder etc.The soft docking joint mainly utilizes damping buffer component to control the flexibility of docking mechanism, according to operation task to realize space six-dimensional momentum unloading, to realize the soft docking of space operation.

The utility model provides a balance mechanism, a test bench and a test system, the number of balance bases is configured to be a plurality, the assembly top surfaces of all the balance bases are located in the same plane, the number of balance frames is configured to be a plurality, each balance frame is connected with at least two balance bases, and the balance bases are located in the same plane. Each balance frame comprises at least two connecting parts and at least one concave part which are connected, the connecting parts of the balance frames are configured to be used for being connected with the assembling top faces of the balance bases, and each concave part of the balance frames is located between every two adjacent balance bases. Balance assistance is formed through balance base points formed by the multiple balance bases at different positions in the annular distribution track, it is guaranteed that the movement assembly of the power mechanism reciprocates accurately along the movement track in the high-speed movement process, movement deviation generated when the movement speed of the movement assembly is too high is prevented, and the service life of the power mechanism is prolonged. Aiming at the characteristics that the damping of the CDC damper is continuously adjustable and the adjusting speed is high, stable test conditions are provided, and higher test requirements are met.

A dashpot comprising: a closed cylinder cavity and a damper shaft (24) which are rotatable with respect to one another; a piston (47) which is slideable between two extreme positions; and a motion converting mechanism to convert the relative rotation between the cylinder barrel (17) and the damper shaft (24) into a sliding motion of the piston (47). The motion converting mechanism comprises two co-operating screw threads, one (58) being provided on an outer wall of the piston (47) and the other one being provided on an inner wall of the cylinder barrel (17) or on an inner wall of a plastic tubular element fixed to the cylinder barrel. By providing the screw thread (58) on the outside of the piston (47), the diameter of the screw thread (58) is increased thereby increasing its lead and thus causing a higher volume of hydraulic fluid to be displaced during operation of the dashpot.

The invention provides a crane lifting capacity monitoring and limiting method and system based on multi-sensor collaboration, and relates to the technical field of engineering machinery, the method comprises the following steps: collecting operation condition data of a crane; based on the winch output shaft torque, the winch rotating speed and the part relative displacement data, a first-order dynamics diagnosis model is constructed, so that the first-order dynamics diagnosis model outputs winch output pulling force, the object lifting speed and the accelerated speed; calculating the real-time mass of the object lifted by the crane according to the output tension of the winch, the speed of the lifted object, the acceleration and the dynamic balance equation; and judging whether the real-time mass is within a preset lifting capacity permissible range or not, and if the real-time mass is out of the preset lifting capacity permissible range, sending a regulation and control signal to a hydraulic damper of the crane so as to regulate the operation state of the object lifted by the crane. According to the invention, the response timeliness and the operation stability of crane control can be improved.

The utility model relates to mechanical engineering technical field discloses anti -toppling cosmetic packing buffering conveyor, including support, a plurality of fixed blocks and conveyer belt, the outer wall of conveyer belt is provided with hierarchical buffer mechanism, the outer wall of conveyer belt is provided with fixed establishment, the front and back sides of the bottom of support are all fixedly connected with vertical board, the bottom of vertical board is provided with moving mechanism, the top of support is provided with conveying mechanism, the top of support is provided with adjusting mechanism, hierarchical buffer mechanism includes a plurality of base, the bottom of a plurality of base is all slidingly connected in the outer wall of conveyer belt. In the utility model, after putting the cosmetic into the metal frame, the rigid grid is buffered with damper and is evenly distributed pressure, the miniature air bag adjusts the shape according to the demand, and fills the gap, the antiskid corrugation on the surface of silica gel plate increases the friction, and the stability when packing the cosmetic is improved.

The utility model discloses a buffering closing cover body device of a textile printing and dyeing dehydrator, which relates to the technical field of dehydrators and comprises a machine body, a cover body movably arranged at the top of the machine body and a buffering assembly arranged at the top of the machine body and used for buffering the falling cover body. And the cover body is slidably connected between the two adjacent groups of guide rails. Through the arrangement of the buffering assembly, the damper and other components, the falling speed of the cover body is effectively reduced, rigid contact between the cover body and the machine body is avoided, therefore, equipment is protected against damage, noise generated in the operation process is remarkably reduced, falling of the cover body can be delayed through friction between the friction assembly and the guide rail, and the service life of the cover body is prolonged. And through the design of a limiting sliding block and a sliding block groove, the stability of the device can be further improved, and the service life of the device can be further prolonged.

A dashpot (5) comprises: a cylinder barrel (17) extruded or broached from metal; a fibre reinforced polymeric piston (47) slidable within the cylinder barrel; a damper shaft (24) rotatably mounted within the cylinder barrel; and a motion converting mechanism for converting a rotational motion of the damper shaft in a sliding motion of the piston. The motion converting mechanism comprises: mating screw threads (58, 59) and a rotation prevention mechanism for preventing a rotation of the piston with respect to the cylinder barrel. The rotation prevention mechanism comprises: one or more longitudinally extending ribs (10) integrally formed with the cylinder barrel; one or more longitudinally extending grooves integrally formed with the piston on the outer surface thereof; and one or more spacers (50) interposed between the cylinder barrel and the piston so as to avoid direct contact of the piston and the cylinder barrel.

The utility model discloses a hydrogen buffer tank of a fuel cell engine, and relates to the technical field of engines. The hydrogen buffer tank comprises a hydrogen buffer tank body, the hydrogen buffer tank body comprises a tank body, a hydrogen separation membrane is arranged on the left side in the tank body, fan blades are arranged on the left side of the hydrogen separation membrane, a rotating rod is fixed to the middle of the right wall of the fan blades, a mounting strip is fixed to the right end of the rotating rod, and bristles are fixed to the right wall of the mounting strip. And the bristles are in contact with the hydrogen separation membrane. According to the device, the bristles rotate through the fan blades to clean the surface of the hydrogen separation membrane, frequent manual cleaning of the surface of the hydrogen separation membrane is not needed, damping of the tank body is achieved through cooperation of the damping sleeve, the elastic piece, the buffer spring and the damper, and the stability of the tank body is better when the device is used.

The invention discloses an exercise power compensation method and device, a power vehicle and a medium, and relates to the technical field of fitness equipment. The method comprises the steps that target power input by a user interface of the power vehicle is acquired; obtaining an initial current based on the target power and the starting initial rotating speed of the motion module; under the condition that the motion module works based on the initial current, the current rotating speed and the current actual power of the motion module are collected in real time; inputting the current rotating speed and the current actual power of the motion module into a pre-generated power compensation model, so that the pre-generated power compensation model compensates the current actual power to obtain compensation power; the power compensation model is a physical model constructed based on a power coefficient, a rotating speed coefficient and a reference compensation value of the motion module; and adjusting the input current of an eddy current damper of the motion module based on the compensation power, so that the actual power of the motion module is equal to the target power. The motion power compensation precision of the power vehicle can be improved.

The utility model discloses a stand column structure of a solar street lamp. Belongs to the technical field of solar street lamps and comprises a stand column body and a buffering assembly arranged on the stand column body and used for buffering, the buffering assembly internally comprises a plurality of buffering plates arranged on the periphery of the stand column body, and one side of each buffering plate is connected with a first buffering air bag. An arranged first buffering air bag can conduct buffering firstly, in the buffering process of the first buffering air bag, along with the increase of the impact force, the first buffering air bag can drive a buffering plate to move towards the position close to the central axis of the stand column body, and a first damper and a first compression spring are driven to conduct buffering; therefore, the situation that the stand column body is damaged or even falls down to cause secondary damage to a vehicle due to the fact that the impact force is too large is avoided, the stand column body can be effectively protected, and the situation that the stand column body is damaged due to impact is avoided.

The disclosure includes systems and methods for a large capacity battery protective suspension for use in vehicles and structures. An example system includes at least one battery rack and at one suspension foot with at least one motion dampening device. The suspension foot reduces the impulse and shock of motion on the battery rack, and it may also limit the motion of the battery rack in the horizontal and vertical axes. Furthermore, the suspension foot may utilize a variety of motion dampening devices such as springs, gas pistons, and dashpots.

The utility model relates to the technical field of axle counting plates, and discloses an enhanced axle counting plate for an urban rail transit signal system, which comprises a bearing block, a limiting mechanism is mounted at the top of the bearing block and used for limiting a vehicle, and a disassembly monitoring mechanism is mounted at the top of the outer wall of the bearing block and used for monitoring the disassembly of the vehicle. The disassembly monitoring mechanism is used for monitoring wheels, the limiting mechanism comprises limiting blocks, the multiple limiting blocks are fixedly connected to the front end and the rear end of the two sides of the top of a bearing block correspondingly, spring dampers are fixedly connected to the left sides of the interiors of the limiting blocks, and cover plates are installed at the tops of the limiting blocks. According to the utility model, the cover plate and the limiting block can be tightly connected by holding the handle through the guide block, so that the waterproof performance of the equipment is improved, the durability of the equipment in a dust and water accumulation environment is enhanced, the problems of wheel diameter difference of different vehicle types and slight settlement and deformation of a track can be solved, and meanwhile, the counting error caused by insufficient mechanical adaptation is reduced.

The utility model relates to the technical field of metro transponders, and discloses a metro transponder based on communication technology, which comprises two pins, a mounting plate is fixedly mounted on the upper surfaces of the two pins, a transponder body is arranged on the upper surface of the mounting plate, a mounting mechanism is arranged on the transponder body, and the transponder body is connected with the mounting mechanism. The mounting mechanism comprises two hollow columns, two sliding grooves, four first springs, four fixing plates, four circular rings, four circular holes, four circular beads, two fixing columns, six clamping grooves, a plurality of gaskets, two piston rods, two second springs and two dampers, and the two hollow columns are fixedly mounted on the lower surface of the transponder body; according to the subway transponder based on the communication technology, the transponder body can be quickly disassembled and assembled in a clamping mode, frequent disassembly and assembly can be conducted in the mode so that the installation height of the transponder body can be adjusted, and the subway transponder based on the communication technology is more convenient.

The application discloses a kind of excavator oil consumption efficiency simulation test method and its testing device, which belong to the technical field of engineering machinery.It solves the defects of easy wear bucket lever and poor test accuracy in the prior art of traditional excavator oil consumption test.The main structure includes vehicle electronic control unit VECU, damper, boom gyroscope, bucket gyroscope, stick gyroscope, upper frame rotation center gyroscope, simulated weight block and oil consumption instrument, the vehicle electronic control unit VECU is respectively connected with boom gyroscope, bucket gyroscope, stick gyroscope and upper frame rotation center gyroscope, simulated weight block is installed on stick, oil consumption instrument is installed on excavator, and oil consumption instrument is respectively connected with engine oil inlet, oil return and fuel tank oil inlet, oil return pipeline.The application is mainly used on excavator and other engineering machinery.