17 results about "Dynamic contact" patented technology

The application discloses a shaft-hole assembly insertion method based on a gating cycle unit. The method classifies and predicts dynamic contact force with time sequence information in the shaft-hole assembly process based on a gating cycle network, and realizes the shaft-hole assembly insertion task of a base in an uncertain posture in combination with speed-based admittance control. Different contact states are mainly divided into eight categories, which are located on the coordinate axes and between the coordinate axes of a Cartesian coordinate system. The change process of each category of contact state is from the existence of a certain inclination posture difference between the shaft and the hole to the smooth insertion of the shaft into the hole. Based on the gating cycle unit method, the contact state recognition of eight different dynamic contact force sequences can be quickly realized. The application can realize the shaft-hole assembly task of the base in the uncertain posture, the dynamic contact force with the time sequence information can improve the accuracy of the contact state recognition, and the data-driven method can make it quickly migrate to other shaft-hole assembly platforms.

The invention relates to the technical field of electrical equipment, and discloses a single-side outgoing line contact structure, which comprises a static contact piece and a moving contact piece, the static contact piece comprises a first supporting part, a plurality of groups of static contact units are fixed on one side of the static contact piece, each group comprises two static contacts, the moving contact piece comprises a second supporting part, and the moving contact piece is opened along the length direction to form a gap for inserting the static contacts. A plurality of groups of moving contact units are installed inside the moving contact, each group of moving contact units comprises two moving contact conducting bars and two symmetrically arranged moving contact supporting elastic sheets, the tops of the elastic sheets are linked with contacts, the two elastic sheets are located between the two conducting bars, contact pressure springs are linked between the opposite sides of the conducting bars and supporting parts, and the springs directly act on the contact occlusion positions. Contact resistance is reduced, and conductive reliability is improved; through the arrangement of the static contact, the moving contact, the conducting bar, the pressure spring and the supporting elastic piece, relative rolling of the moving contact is achieved in the movement process, abrasion is reduced, the driving torque is reduced, the width of the static contact is effectively reduced, and then the length size of the overall structure is reduced.

The utility model discloses a novel supporting structure which comprises a machine head. The supporting unit is arranged on the machine head, and the supporting unit is used for supporting and restraining the machine head; and the contact assembly and the bending assembly are both arranged on the supporting unit, and the contact assembly and the bending assembly are used for supporting the machine head in an auxiliary mode. The risk that the single-wheel machine head is prone to rollover during operation is reduced through the supporting units, the bottom end of the single-wheel machine head is in dynamic contact with the frame of the assembly in the operation process, when the machine body tends to incline, the contact force of the contact assembly and the frame can generate reverse torque, rollover acting force is rapidly counteracted, equipment is kept in a stable translation state all the time, and the service life of the single-wheel machine head is prolonged. Therefore, the walking wheels can normally run and roll, the rear seat of the machine head cannot rotate, the balance of the machine body is guaranteed, the machine body is not prone to rollover, and the posture change of the machine body is responded in real time.

The application relates to a compression-type arc-extinguishing chamber, which comprises a static contact mechanism, a dynamic contact mechanism, a cylinder mechanism and an elastic member. The dynamic contact mechanism is disconnectably matched with the static contact mechanism along a first direction. The cylinder mechanism comprises a fixed piston and a cylinder body, and the fixed piston is fixedly arranged relative to the static contact mechanism. The cylinder body is matched with the fixed piston along the first direction to form a piston cooperation. The elastic member is arranged between the dynamic contact mechanism and the cylinder body. The cylinder body and the dynamic contact mechanism are movably matched along the first direction and are driven through the elastic member. In the disconnecting process, due to the compression and blocking effect of the compression chamber, when the cylinder body is obviously resisted and the speed is sharply reduced, the dynamic contact mechanism can continuously deform through the elastic member to move relative to the cylinder body, and cannot be synchronously reduced with the cylinder body, so that the speed change is more stable in the disconnecting process, the dynamic contact mechanism can continuously move along the disconnecting direction, and the risk of disconnecting failure is reduced.

A sealing arrangement is disclosed for sealing between a first component (200) and a second component (300), which are rotatable relative to each other. The sealing arrangement (100) comprises a frame (10) and a sealing body (20), the sealing body (20) being attached to an outer wall of the frame (10). The sealing body (20) is provided with sealing lips (21), the sealing lips (21) being dynamically in contact with the second component (300). The sealing lips (21) comprise a main lip (211) and dust lips (212), the main lip (211) and the dust lips (212) being axially spaced apart, and a first annular cavity (213) being formed between the main lip (211), the dust lips, and the second component (300).The dust lips (212) comprise at least a first dust lip (2121) and a second dust lip (2122), wherein the second dust lip (2122) is used for dynamic contact with the second component (300) and the second dust lip (2122) is provided with a vent hole (2123) that extends through the second dust lip (2122). The vent hole (2123) communicates with the first annular cavity (213), and the first dust lip (2121) is located on the side of the second dust lip (2122) away from the first annular cavity (213) and is used to cover the vent hole (2123) in the axial and radial directions.The problem of vacuum formation in the first annular cavity is solved by the ventilation hole, and by using the first dust lip to cover the ventilation hole, the problems of leakage and failure due to accelerated wear of the sealing lips 21, caused by the direct ingress of contaminating particles into the first annular cavity through the ventilation hole, are solved. A bearing utilizing the described sealing arrangement is also disclosed.

The invention discloses a contact system, which comprises a shell, and an electromagnet, a contact support, a static contact and a moving contact which are arranged in the shell, and is characterized in that the static contact is arranged on a static contact piece, the static contact piece is arranged on the left side of the shell in a penetrating manner, the moving contact is arranged at the left lower end of a moving contact bridge, the middle part of the moving contact bridge is hinged in the shell, and the middle part of the moving contact bridge is hinged in the shell. The movable contact bridge is provided with an elastic piece for driving the movable contact bridge to rotate anticlockwise, a movable iron core of the electromagnet can abut against the right end of the movable contact bridge, the contact support is arranged on the upper side of the shell in a penetrating mode, and the lower end of the contact support abuts against the upper end of the right side of the movable contact bridge. According to the contact system, the electromagnet, the contact support, the static contact, the static contact piece, the moving contact, the moving contact bridge and the contact support are all installed in the shell in advance to form an independent contact system, finally the independent contact system is inserted into the base of the switching device, contact structures do not need to be installed in the limited base space one by one, and the assembly process is more convenient.

1. The name of the design product: silicon light contact force sensor (guide force spring type). 2. The use of the design product: the shell and tail cable for packaging silicon light pressure sensing chip, suitable for measuring contact force, such as the dynamic contact force value between the subway pantograph and the contact line. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This invention relates to an installation structure for a brushless motor rotor, comprising a rotor with a through-hole at its center for axially mounting a steel shaft onto the rotor; a magnet, fitted around the outer periphery of the rotor; and an elastic limiting structure surrounding the shaft hole on the rotor. The elastic limiting structure includes a limiting side and an elastic side arranged circumferentially, which together form an elastic limiting channel coaxial with the shaft hole. The limiting side is formed on a limiting claw, limiting the steel shaft radially; the elastic side is formed on an elastic claw, which can bend and deform relative to the shaft hole to create a dynamic gap between the elastic side and the steel shaft. The advantages of this invention are: by providing an elastic limiting structure, while maintaining the coaxiality of the steel shaft and rotor, dynamic gap compensation eliminates the gap between the rotor and the steel shaft in real time, maintaining dynamic contact with the steel shaft, avoiding radial wobble of the rotor and rigid collision with the steel shaft, and reducing the mechanical noise of the motor.

The invention relates to a dynamic sealing system comprising a central portion (20) with an outer surface (20A) provided with a first annular groove (202) accommodating a sealing segment (210) made of a first material, and a peripheral portion (22) with an inner surface (22A) provided with a second annular groove (212) accommodating an O-ring seal (220), made of a second material, positioned between a bottom (216) of the second annular groove (212) and the sealing segment (210). The second material has a hardness less than that of the first material. The sealing segment (210) has a bending stiffness greater than that of the O-ring seal (220). The O-ring seal (220) ensures static contact of the sealing segment (210) with the peripheral portion (22). The sealing segment (210) has a dynamic sealing face (210D) with respect to a flank (204B) of the first annular groove (202). The use of different materials for respectively ensuring static contact and dynamic contact allows each of these contacts to be optimized.

The invention relates to a wafer anti-sticking transmission mechanism, which comprises a machine base, a driving motor, a first eccentric wheel, a sliding piece, a supporting assembly and a second eccentric wheel, and is characterized in that the supporting assembly comprises a swinging piece and a rod piece; the rod piece is inserted into the wafer loading frame to extract the wafer, the first eccentric wheel is driven by the driving motor to rotate so as to drive the sliding piece to reciprocate in the vertical direction, the second eccentric wheel is further driven by the sliding piece to rotate, and finally the swing pieces on the two sides and the rod piece are driven to swing synchronously. Continuous static contact between the surface of the rod piece and the surface of the wafer is effectively avoided, in the cooling stage after the wafer is subjected to chemical liquid treatment, the dynamic contact mode can remarkably break the solidification and crystallization process of a corrosive residual liquid film at a contact point, and therefore the adhesion problem between the rod piece and the wafer is fundamentally solved; along with the completion of the process, the temperature of the wafer is gradually reduced to room temperature or a preset safe temperature range in a controllable environment; at this time, since adhesion has been successfully prevented, the wafer can be extracted or transferred efficiently and without loss.

The invention belongs to the technical field of circuit breakers, and particularly relates to a miniature circuit breaker with an anti-rebound structure. The circuit breaker comprises a shell, a static contact piece, a movable contact piece and an arc extinguish chamber, and further comprises a driving frame used for controlling closing or opening of the static contact piece and the movable contact piece, and an operating rod is arranged on the driving frame; a first connecting rod is rotationally connected between the torsion seat and the driving frame, a supporting plate is fixedly connected to the static contact piece, and a second connecting rod is rotationally connected between the torsion seat and the supporting plate; the torsion seat is provided with a jumping rod clamped with the lock frame, and the lock frame is connected with a first tension spring; an ejector rod is connected in the electromagnetic solenoid; the anti-bounce mechanism is used for preventing the moving contact from bouncing after opening, and the anti-bounce mechanism is connected with the driving frame; the anti-rebound mechanism is arranged, the anti-rebound mechanism is provided with the ratchet wheel and the pawl, the driving frame drives the ratchet wheel to rotate in the opening process, the ratchet wheel is limited through the pawl, reverse rotation of the ratchet wheel is avoided, and therefore rebound of the movable contact piece is avoided.

The application discloses a change-over switch, which comprises a shell and a switch pole, the switch pole comprises a rotating shaft and two sets of contact mechanisms, in a first direction, the rotating shaft is rotatably arranged between the two sets of contact mechanisms, each set of contact mechanisms comprises a static contact group and a dynamic contact assembly, the static contact group comprises two static contacts which are arranged in a second direction, the dynamic contact assembly comprises a contact support and a dynamic contact, the dynamic contact comprises at least two dynamic contact bridges which are arranged side by side in a third direction, each dynamic contact bridge is arranged on the contact support in the second direction, and a dynamic contact point of each dynamic contact bridge is arranged opposite to a static contact point of the static contact in the first direction. In the application, the two adjacent dynamic contact bridges in the same dynamic contact assembly are arranged side by side in the third direction, so that the number of contact points between the dynamic contact assembly and the static contact group can be increased, the two adjacent dynamic contact bridges are prevented from being arranged in the moving direction of the dynamic contact assembly, the space occupied by the dynamic contact assembly in the shell is saved, and the size of the change-over switch is reduced.

A dynamic sealing system comprising a central portion (20) with an external surface (20A) having a first annular groove (202) housing a sealing segment (210) made of a first material, and a peripheral portion (22) with an internal surface (22A) having a second annular groove (212) housing an O-ring (220) made of a second material, interposed between a base (216) of the second annular groove (212) and the sealing segment (210). The second material has a lower hardness than the first material. The sealing segment (210) has a greater flexural stiffness than the O-ring (220). The O-ring (220) ensures static contact between the sealing segment (210) and the peripheral portion (22). The sealing segment (210) has a dynamic sealing face (210D) vis-à-vis a flank (204B) of the first annular groove (202).Using different materials to ensure static and dynamic contact respectively allows for the optimization of each of these contacts. Figure for the abbreviation: Figure 1.

1. The name of the design product: dynamic contact angle tester. 2. The use of the design product: the design product is used for accurately measuring the contact angle of liquid on the surface of solid material. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a kind of planetary roller screw thread tooth dynamic load distribution calculation method, mainly solve the load distribution of planetary roller screw under the action of inertial force in actual work.Its implementation steps are: according to the meshing principle of planetary roller screw helical surface, the static contact force of roller, screw and nut at contact point is obtained, then the roller is taken as the research object, and the inertia force generated by screw rotation and the contact force on the side of screw and nut are analyzed in the axial and radial directions of roller, the dynamic contact force of roller, screw and nut after force analysis is taken as external load, and substituted into thread load distribution model, the dynamic load distribution of planetary roller screw thread tooth can be obtained.The application fills the blank of the theoretical model of planetary roller screw thread tooth dynamic load distribution, and can directly solve the load distribution of planetary roller screw under different screw speeds and different loads, as well as the influence of screw speed and load on load distribution.