873 results about "Contact mechanism" patented technology

The utility model provides a fast closing circuit breaker, which comprises a contact mechanism, an operating mechanism and a limiting assembly, in the closing process, a moving contact has a first state in which the moving contact is linked with a moving contact frame and rotates towards a direction close to a static contact, and a second state in which the moving contact keeps a constant distance from the static contact after abutting against a limiting block and a first elastic piece stores energy; compared with the prior art, through the arrangement of the energy storage mechanism, the movable contact and the static contact can be quickly connected, the phenomenon that the contact is ablated or welded due to high temperature due to the fact that the contact is connected or disconnected due to human factors is avoided, and the safety of the contact is improved. And the service life of the circuit breaker is prolonged.

The invention belongs to the technical field of power switch cabinets, and particularly provides a switch cabinet with a stroke measurement function, which comprises a cabinet body, a handcart, a stroke measurement assembly and an attitude detection assembly, and is characterized in that the stroke measurement assembly comprises a first range finder and a current detector, the first range finder is arranged on the handcart, and the current detector is arranged on the handcart; and the current detector is connected between the moving contact mechanism and the bus. And the handcart is pushed forwards until the current detector is electrified, and the distance S1 measured by the first range finder is recorded. The handcart continues to be pushed until the handcart reaches a preset working position, the distance S2 measured by the first distance meter is recorded, and the difference between the two distances is the contact stroke of the contact. According to the invention, the stroke measurement assembly can measure the contact stroke of the contact, and the attitude detection assembly can detect the position attitude of the moving contact mechanism, so that the problem of poor contact of the contact can be found and processed in time, the frequency and cost of equipment overhaul and maintenance can be reduced, and the operation stability of a power grid can be improved.

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, which comprises a reset button, a tripping rod, a tripper, a control module and a switch contact system. When the reset button is at the hasp position or the release position, the switch contact system is switched on or switched off; a switch moving contact mechanism of the switch contact system comprises a contact support, a switch moving contact and a switch moving contact spring; in the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to enable the switch moving contact to be in initial contact with the switch static contact, and then the contact support and the switch moving contact are driven to move relatively to enable the switch moving contact spring to store energy; in the process that the reset button moves to the tripping position, the switch moving contact spring releases energy to enable the switch moving contact and the contact support to recover limiting fit; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

The invention discloses a flat gate valve with a good sealing structure, and relates to the technical field of flat gate valves, the top of a valve body is fixedly connected with a control part, the side face of the valve body is fixedly connected with a filtering part, and the side, away from the filtering part, of the valve body is fixedly connected with an anti-blocking part. When the control component is opened and oil or other substances normally pass through the valve body, the contact mechanism pulls the first spring to move on the guide rod through the impact force of the fluid, and when the control component is closed and the impact force of the fluid passing through the valve body is smaller than the tensile force of the first spring, the contact mechanism pulls the first spring to move on the guide rod through the tensile force of the first spring. And when oil or other substances pass through the gate valve, the oil or other substances are partially deposited and remained on the inner side of the gate valve, so that the phenomenon that the valve body is not tightly sealed is avoided.

The invention belongs to the technical field of PCB electronic component testing, and particularly relates to a PCB electronic component resistance testing system for environmental protection equipment, which comprises a feeding module, the feeding module adopts a conveying belt assembly to convey a PCB electronic component to be tested to a position below a testing module, the testing module comprises a testing box, a probe contact mechanism and a watch hand driving mechanism, the testing box is fixed above the feeding module in a suspended mode, a probe contact mechanism is installed in the testing box in a lifting mode, a meter hand driving mechanism is arranged above the probe contact mechanism, and the meter hand driving mechanism is used for conducting communication between testing meter hands of the meter hand driving mechanism and a plurality of testing probes on the probe contact mechanism. According to the invention, the abrasion or damage to the PCB caused by frequent contact between the test pointer and the PCB can be avoided, and the accuracy of the resistance test of the PCB can be improved.

The invention discloses a multi-gear adjusting rotary switch, which comprises a base, a shell cover, a rotary handle and a contact assembly, and is characterized in that the rotary handle is rotationally arranged between the base and the shell cover and is provided with a driving rod extending along the radial direction of the rotary handle; the contact assembly comprises a plurality of moving contact bridges which are annularly arranged in the mounting cavity with the axis of the rotating handle as the center and are of elastic structures, and a plurality of static contact pieces which are arranged on the base and are opposite to the plurality of moving contact bridges, and the plurality of moving contact bridges are connected and are located on the moving path of the driving rod. According to the technical scheme, the driving rod drives the multiple movable contact bridges to make contact with the multiple static contact pieces in the process of rotating along with the rotating handle, operation pressure is remarkably dispersed through an in-turn contact mechanism formed by the driving rod and the multiple movable contact bridges, continuous stress of a single movable contact bridge is avoided, the mechanical load and the fatigue degree of the movable contact bridges are greatly reduced, and the service life of the movable contact bridges is prolonged. The heating probability is reduced, abrasion and fusion welding risks are reduced, and the mechanical service life is prolonged.

The utility model provides an isolating switch, which comprises a switch shell, a contact mechanism and an arc extinguish chamber, the contact mechanism and the arc extinguish chamber are arranged in the switch shell, the contact mechanism comprises a static contact and a moving contact rotatably mounted on the switch shell, the isolating switch further comprises an exhaust structure arranged in the switch shell, the exhaust structure is provided with an exhaust port communicated with the outside, and the arc extinguish chamber is arranged in the switch shell. The static contact, the arc extinguish chamber and the exhaust structure are arranged on the same side of the moving track of the moving contact and are sequentially arranged in the direction, away from the static contact, of the moving contact. Therefore, the exhaust structure is close to the arc extinguish chamber, hot gas can be exhausted through the exhaust structure more quickly, and the safety performance is ensured.

A plug-in circuit breaker comprises a shell, an operating mechanism, a static contact and a moving contact, a closing handle and an opening handle of the operating mechanism are respectively arranged on the shell in a sliding mode, a closing locking piece is assembled in a rotating mode and is respectively matched with the closing handle and the opening handle, the contact mechanism further comprises a contact spring, and the moving contact and the contact spring are respectively arranged in a rotating mode. When the closing handle is pressed to a closing position, the contact spring firstly drives the moving contact to switch on the contact mechanism and provide contact pressure for the moving contact, the closing handle then closes the solid-state electronic switch, the closing handle is in limiting fit with the closing locking piece, and when the opening handle is pulled to an opening position, the solid-state electronic switch is closed. The switching-off handle drives the switching-on locking piece to release the limiting cooperation with the switching-on handle, so that when the switching-on handle moves to the switching-off position, the solid-state electronic switch is firstly switched off, and then the moving contact is driven to switch off the contact mechanism. According to the invention, the mechanism of the operation mechanism is simplified, misoperation in the operation process can be prevented, and the reliability and the use safety of the product are improved.

According to the contact mechanism, the contact system and the DC contactor of the utility model, the auxiliary moving contact module moves with the moving part transmission member and the moving contact bridge on the transmission member in an interlocking manner, the dimension chain is short, and the movement stroke is stable and reliable; as the reed is in interlocking fit with the transmission piece and the movable contact bridge through the base, the transmission piece can push the base to enable the movable contact bridge and the reed to synchronously perform disconnection motion, and inevitable disconnection can be ensured through larger main spring counterforce even if the reed is adhered to the auxiliary static contact, so that the on-off states of the main contact and the auxiliary loop are ensured to be consistent.

The invention relates to the field of low-voltage electric appliances, in particular to an isolating switch, which comprises an operating mechanism and a switch body, the switch body comprises at least one group of switch units, each switch unit comprises a moving contact mechanism, and each moving contact mechanism comprises a supporting rotating shaft; the operating mechanism comprises a mechanism support, a connecting rod structure, a driving shaft structure, an output piece, at least one transmission structure and a linkage shaft, wherein the driving shaft structure and the output piece are rotationally arranged on the mechanism support. The switch body further comprises a rotating disc which is fixedly connected with the supporting rotating shaft and arranged between the linkage shaft and the supporting rotating shaft. The driving shaft structure is in transmission connection with the connecting rod structure through the transmission structure, the connecting rod structure is in transmission connection with the output part to drive the output part to rotate in a reciprocating mode, the output part is in transmission connection with the rotating disc through the linkage shaft to drive the supporting rotating shaft to rotate, and the output part, the rotating disc and the supporting rotating shaft rotate around a first axis o1-o1. The axis of the linkage shaft is a second axis o2-o2 which is parallel to the first axis o1-o1 at an interval; the isolating switch is convenient to assemble and high in safety.

The utility model discloses a milling cutter convenient to replace, which relates to the technical field of milling cutters, and comprises a milling cutter body and a positioning mechanism, the positioning mechanism comprises a lifting sleeve sleeved on the outer wall of a mounting seat, the bottom of the inner wall of the lifting sleeve is provided with an extrusion circular truncated cone surface, and the outer wall of the mounting seat is provided with a plurality of movable holes; connecting rods are movably connected to the inner walls of the multiple movable holes in a penetrating and inserting mode, and contact mechanisms are arranged between the connecting rods and the milling cutter body. By means of the arrangement of the lifting sleeve, the extrusion circular truncated cone face, the movable hole and the connecting rod, the lifting sleeve moves downwards on the outer wall of the installation base, the extrusion circular truncated cone face extrudes the connecting rod, and therefore the multiple contact mechanisms move at the same time till the multiple contact mechanisms tightly abut against the milling cutter body; therefore, the milling cutter body can be kept coaxial with the mounting seat after being mounted, so that the milling cutter body cannot eccentrically rotate when the mounting seat rotates to drive the milling cutter body to work, and the mounting stability of the milling cutter body is improved.

The invention relates to the technical field of lifting frames, in particular to an X-ray detection equipment lifting frame which comprises a base, two symmetrically-arranged lifting assemblies are mounted on the outer wall of the top of the base, the same mounting frame is mounted at the tops of the two lifting assemblies, and the same fixing frame is fixedly connected to the inner walls of the four sides of the mounting frame; and the outer wall of the top of the fixing frame is rotationally connected with a rotating disc, and two symmetrically-arranged contact mechanisms are installed on the outer wall of the rotating disc. The defects in the prior art are overcome, the two contact mechanisms are arranged on the rotating disc, the X-ray machine can be fixed and supported conveniently, meanwhile, the rotating disc can be rotationally adjusted, the direction of the X-ray machine can be adjusted conveniently, meanwhile, the lifting assembly on the base is matched, the height of the X-ray machine can be adjusted conveniently, and the X-ray machine is convenient to adjust. Through cooperation of the lifting assembly, the mounting frame and the rotating disc, the adjustability of the X-ray machine is improved, and then the detection efficiency of the X-ray machine is improved.

The invention discloses a drop-out fuse, and relates to the technical field of short-circuit protection switches. Comprising an insulator; the upper support arm is fixed at the upper end of the insulator and is provided with an elastic clamping contact mechanism; the lower supporting arm is fixed at the lower end of the insulator, is arranged on the same side with the upper supporting arm and is provided with a pawl and a jacking spring, the pawl can slide up and down relative to the lower supporting arm, and the jacking spring is used for driving the pawl to move in the direction away from the upper supporting arm; the flicking device is mounted on the lower support arm; the lower end of the fusion tube is hinged to the lower supporting arm, the upper end of the fusion tube can be clamped with the elastic clamping contact mechanism, a ratchet wheel is fixed to the lower end of the fusion tube, and under the condition that the ratchet wheel is matched with the pawl, the fusion tube can be limited to rotate towards one end away from the insulator; and the fuse wire is arranged in the fusion tube in a penetrating manner, one end of the fuse wire is fixedly connected with the lower support arm, and the other end of the fuse wire can be clamped with the elastic clamping contact mechanism and is in transmission connection with the pawl. According to the invention, the connection stability of the fusion tube under the switching-on condition can be ensured.

The invention discloses a service life detection method, medium and equipment for a contact mechanism of a molded case circuit breaker, and the method comprises the steps: obtaining a high-resolution spectrogram of the contact mechanism through solid nuclear magnetic resonance and magic angle rotation technologies, and carrying out the preprocessing of the high-resolution spectrogram to obtain reconstruction representation data; performing multi-step iterative prediction on the reconstructed data by using a multi-contact life decline prediction model so as to accurately obtain the life prediction condition of the contact mechanism; according to the method, reconstruction data are mapped to a high-dimensional feature space, an optimal separation hyperplane is constructed, an elastic net contact life SOH model is established based on the optimal separation hyperplane, and continuous scaling prediction is carried out. The method comprises the following steps: sorting and screening intrinsic characteristic variables of reconstructed data; and generating echelon life prediction of the contact mechanism by using a conditional generative adversarial network in combination with the reconstruction data and the SOH prediction condition. According to the method, service life detection of the contact mechanism is updated in real time, the detection precision is remarkably improved, prediction errors caused by parameter degradation are avoided, and a more accurate method is provided for service life prediction of the contact mechanism.

The utility model relates to the technical field of paperboard book production, and discloses a beating and aligning device for positioning and pushing paperboards, which comprises a rack; the book receiving mechanism comprises a first book receiving mounting plate, a second book receiving mounting plate, a first supporting plate and a second supporting plate, and the first supporting plate and the second supporting plate can be opened; the front positioning mechanism is used for positioning a front positioning plate of the paperboard book in the front-back direction, and the front positioning plate, the first book receiving mounting plate, the second book receiving mounting plate, the first supporting plate and the second supporting plate jointly define a book receiving position used for positioning the paperboard book; the pushing and aligning mechanism is used for pushing the paperboard books into the book receiving mechanism to the front positioning plate; a book receiving plate; and the push-out mechanism is used for pushing out the paperboard books from the book receiving plate. The book receiving mechanism and the front positioning mechanism are arranged to jointly form the book receiving position, the paperboard book falls to the book receiving plate below after being positioned in the book receiving position, and abrasion of the bottom face of the paperboard book is small due to the fact that the paperboard book leaves the book receiving position in an opening and falling mode.

The invention belongs to the technical field of electricity testing equipment, and discloses a mobile automatic electricity testing device, which comprises an intelligent mobile trolley, an end position limiting module, a multi-point synchronous contact mechanism, an indirect continuous detection mechanism and a self-detection mechanism, a vehicle-mounted supporting frame is fixedly installed on the intelligent moving trolley, a vertical linear module is fixedly installed on the vehicle-mounted supporting frame, and a multi-point synchronous contact mechanism is installed at the moving end of the vertical linear module. The multi-point synchronous contact mechanism comprises a horizontal linear module, an elastic supporting module and a first contact module. The moving end of the vertical linear module is provided with an end limiting module used for limiting and supporting the end of the first contact module. An indirect continuous detection mechanism for continuously detecting the electrified state of the plurality of groups of contact modules I is mounted on the movable mounting frame; and a self-checking mechanism for self-checking is mounted on the end position limiting module and the movable mounting frame. Through the above mode, continuous detection of a plurality of detection points is realized, and the detection efficiency is improved.

The invention provides an electric isolation protection device for a secondary terminal. The electric isolation protection device comprises two opposite mistaken touch prevention mechanisms and a shielding strip for connecting the mistaken touch prevention mechanisms. A strong magnet is arranged at the bottom of a fixing base of the mistaken touch prevention mechanism, a reel, an eccentric tensioning shaft and a driving mechanism are arranged in the fixing base, one end of a shielding strip is fixed to the reel after winding around the tensioning shaft, and coil springs on the two sides of the reel enable the shielding strip to be wound in the first direction. A lock shaft mechanism on the fixed seat is provided with a one-way separation shaft, a pivotal shaft and a pawl. The one-way separation shaft slides in the fixing base, the end, facing the reel, of the one-way separation shaft is provided with a first connecting part, the first connecting part is matched with a second connecting part of the reel and provided with a coupled handle, and separation and reunion of the connecting parts can be achieved by pushing and pulling the handle. The ratchet wheel part on the periphery of the one-way separation shaft is matched with the pawl, and the pawl is separated from the ratchet wheel at the first position in the first rotation direction and meshed with the second position in the second rotation direction. The secondary terminal electric isolation protection device is provided to replace an adhesive mode, so that the cost of consumables is reduced, the structure is stable, and the use is convenient.

The utility model discloses a multi-head induction cooker structure capable of reducing reactive power loss, and relates to the technical field of induction cookers, the multi-head induction cooker structure capable of reducing reactive power loss comprises a multi-head induction cooker body, the multi-head induction cooker body is provided with two rows of heating areas which are arranged at equal intervals, a plurality of fixing columns are fixedly connected to the surface of the multi-head induction cooker body and distributed on the periphery of the heating area, telescopic mechanisms are arranged on the surfaces of the fixing columns, and contact mechanisms are arranged at the ends, away from the fixing columns, of the telescopic mechanisms. When the multi-head induction cooker structure and the multi-head induction cooker device capable of reducing the reactive power loss are used, the position of a pot is positioned, and the pot can be always positioned in the range of a heating area, so that the condition that the bottom part of the pot is positioned outside the heating area and the reactive power loss is generated in the heating area is reduced, the reactive power loss of the multi-head induction cooker device is further reduced, and the service life of the multi-head induction cooker device is prolonged. The energy-saving effect of the multi-head induction cooker body is improved, and the practicability of the device is improved.

The utility model relates to the technical field of butterfly valves, in particular to a leakproof sealing type butterfly valve which comprises a valve body, a valve mechanism is installed in the valve body, a connecting shaft is fixed to the center of the inner side of the valve mechanism in a penetrating mode, and the connecting shaft is rotationally connected with the valve body. The valve mechanism comprises a valve plate, supporting rings are fixed to the two sides of the middle of the outer wall of the valve plate, anti-leakage sealing pieces are fixed to the outer portions of the supporting rings, wear-resisting contact mechanisms are welded to the edges of the two sides of the outer wall of the valve plate and attached to the anti-leakage sealing pieces, and rubber rings are fixed to the inner sides of the wear-resisting contact mechanisms. The abrasion-resistant contact mechanism comprises an abrasion-resistant ring, and the lower surface of the abrasion-resistant ring is connected with the valve plate in a welded mode. Particles on the inner wall of the valve body are effectively scraped away through the abrasion-resistant contact mechanism, and the leakage-proof sealing piece is prevented from being ground; the anti-leakage sealing piece enhances the fitting and anti-deformation capacities through a buffer structure; and the supporting ring anti-falling piece guarantees complete sealing, and the sealing and wear-resisting performance is comprehensively improved.

A circuit breaker relates to the technical field of low-voltage electrical appliances and comprises a shell, a handle, an operating mechanism and a contact mechanism, the shell is provided with a first rotating shaft and a second rotating shaft, the operating mechanism is mounted on the first rotating shaft and comprises a mechanism seat, a jump fastener and a lock fastener, the contact mechanism comprises a moving contact and a static contact, the moving contact is mounted on the second rotating shaft, and the static contact is mounted on the second rotating shaft. The handle and the jump fastener are connected through a first connecting rod. The jump fastener and the moving contact are connected through a second connecting rod. During normal switching-on or switching-off operation, the locking fastener is buckled with the tripping fastener, and the handle is driven to drive the mechanism seat to rotate around the first rotating shaft through the first connecting rod, so that the moving contact is driven to be close to or far away from the static contact through the tripping fastener and the second connecting rod; when a fault is tripped, the locking piece and the tripping piece are tripped, and the moving contact is driven to rotate around the second rotating shaft so as to be far away from the static contact. According to the circuit breaker, the operating mechanism and the moving contact are respectively arranged on different rotating shafts, and the motion decoupling of the operating mechanism and the moving contact is realized during fault tripping, so that the moving contact can be quickly broken.

According to the contact mechanism, the contact system and the direct current contactor, the magnet yoke is used as a motion reference of the driving module, the magnet yoke is used for limiting the upper portion of the driving module through the limiting cooperation of the movable iron core which is in linkage connection with the magnet yoke and the driving module, the magnet yoke is used for limiting the lower portion of the driving module, and the auxiliary movable contact module is fixed on the magnet yoke through the installation frame. Interlocking and limiting with the driving module are realized, mechanical parameter adjustment and fixation of the auxiliary movable contact module can be completed before welding and sealing, and the working reliability of the auxiliary movable contact module after welding is ensured. Meanwhile, the height of the auxiliary movable contact module is determined by the height of the mounting frame fixed on the magnet yoke, the size chain is single, the superposition tolerance is small, and the risk of excessive or insufficient pushing caused by the fact that the movement stroke of the driving module is influenced by the tolerance is reduced.

The invention provides a variable-step-size on-load tap changer, a control method, a control system, equipment and a medium. The variable-step-size on-load tap changer comprises at least one static contact unit, two moving contact mechanisms and a control device, wherein the two moving contact mechanisms independently slide on the static contact unit; the control device is connected with the two moving contact mechanisms; the static contact unit comprises three static contacts, and all the static contacts are arranged in an annular array. Each moving contact mechanism realizes uninterruptible conductive connection switching with each static contact in the sliding process; by means of the characteristics that the number of the static contacts is matched with that of the moving contact mechanisms, the moving contact mechanisms move independently, and all the static contacts are arranged in an annular array, the two moving contact mechanisms can slide to the static contact of any potential in one-step action, the static contacts of multiple potentials are combined and connected pairwise, seven voltage adjusting gears are formed, and the voltage adjusting efficiency is improved. Therefore, one-step switching between variable-step voltage regulation and any voltage regulation gear is realized, and cross-gear quick regulation is realized.

A contact mechanism and a direct current contactor of the present invention. An auxiliary moving contact module moves in an interlocked manner with a transmission member, which is a moving part, and a moving contact bridge on the transmission member, a dimensional chain is short, and the movement stroke is stable and reliable. Since a reed is in interlocking fit with the transmission member and the moving contact bridge by means of a base, the transmission member can push the base to enable the moving contact bridge and the reed to synchronously perform disconnection motion, so that necessary disconnection can be ensured by means of a relatively large counterforce of a main spring even if the reed is adhered to an auxiliary fixed contact, thereby ensuring that the on-off states of a main contact and an auxiliary loop are consistent.

The invention discloses a sampling detection device for textile production, and relates to the technical field of textile production detection. Comprising a mounting rack, a traction roller is arranged on the mounting rack, a clamping mechanism is arranged at the bottom end of the mounting rack, and a sampling detection mechanism is arranged at the top end of the mounting rack; the sampling detection mechanism comprises a moving frame, two stretching mechanisms are arranged on the moving frame, a contact mechanism is arranged between the two stretching mechanisms and divides sample cloth, the two stretching mechanisms clamp and stretch one piece of sample cloth respectively, the contact mechanism comprises a detection electric cylinder, and an extrusion part is arranged on a telescopic rod at one end of the detection electric cylinder. A friction part is arranged on the telescopic rod at the other end; the stretching mechanism comprises a rotary table rotationally mounted on the moving frame, and a clamping piece is arranged on the rotary table; after the sample is sampled, the segmentation operation is realized, so that multiple detections are completed, and the sampling and fixing operation is simplified.

The invention discloses South America white shrimp compound feed raw material crushing equipment for saline-alkali soil culture, and relates to the technical field of South America white shrimp compound feed raw material crushing. The side face of a crushing tank is fixedly connected with a control panel, and the bottom of the crushing tank is fixedly connected with a driving part; by arranging the contact mechanism, the crushing rod is driven to continuously rotate through the output end of the driving component, so that when materials in the crushing tank are slowly discharged, the extrusion force of the materials in the tank on the sliding plate is smaller than that of the materials in the crushing tank, and the crushing efficiency is improved. And when centrifugal force is generated during rotation of the crushing rods, the sliding plates and the sliding rods drive the rubber blocks to move towards the inner side of the crushing tank through the action of the centrifugal force, meanwhile, the rubber blocks collide with the inner side of the crushing tank, and meanwhile, part of impurities attached to the inner side of the tank body are shaken off through impact force generated during vibration.

The invention relates to the technical field of medical nursing instruments, in particular to an obstetrical post-cesarean wound nursing device which comprises a binding belt, a binding part is arranged on the binding belt and fixedly connected with a first locking assembly, an abdominal cover belt is arranged between the two ends of the inner edge of the binding belt, and second locking assemblies are arranged at the two ends of the abdominal cover belt. Symmetrical positioning assemblies are arranged on the inner edge wall of the abdominal cover belt and used for positioning the wound position of a puerpera, and anti-skid assemblies are arranged on the surfaces of the positioning assemblies. An adjusting assembly is arranged on the side, away from the abdomen cover belt, of the inner edge wall of the binding belt, in the binding process of the binding belt, when the puerpera sweat, the anti-skid assembly can improve the contact stability of the binding belt and the skin of the puerpera, and the adjusting assembly dynamically adjusts the tightness of the binding belt according to the enhanced binding acting force. By designing a wound covering and positioning structure, a dynamically-adjusted binding contact mechanism and a binding force dynamic compensation mechanism, the technical defect that the nursing belt is loosened due to wound traction and mattress sweat during postpartum movement of a puerpera is overcome.

The invention belongs to the technical field of orthopaedic orthopaedics, and particularly discloses a reduction and fixation orthopaedic orthopaedic device for orthopaedics, the upper side and the lower side of a positioning part are slidably connected with sliding rods, the side, close to the sliding rods, of the positioning part is fixedly connected with an adjusting part, and the positioning part comprises two positioning frames. According to the reduction and fixation orthopedic equipment for the orthopedics department, the positioning component is arranged, and a cooling mechanism is arranged in the middle of the inner side of the positioning frame, so that ice compress detumescence can be directly carried out on a bruise position, local swelling and pain caused by fracture or correction operation of a patient are relieved in time, local blood circulation is promoted, and favorable conditions are created for bone healing; when the positioning frame is worn for a long time, the contact mechanism can massage and relieve the corresponding part of the patient, muscle stiffness and discomfort caused by long-time fixation are relieved, the wearing comfort of the patient is improved, and the patient can better cooperate with treatment.

The contact mechanism comprises a moving contact assembly and a static contact group, the moving contact assembly comprises a contact support and a moving contact bridge, the moving contact bridge is driven by the contact support to move in the direction close to or away from the static contact group, the moving contact assembly further comprises two elastic devices, a connecting piece is arranged in the middle of the moving contact bridge, and the elastic devices are connected with the moving contact bridge. The first end and the second end of each elastic device are rotationally connected with the contact support and the connecting piece respectively, so that the two elastic devices are matched to be switched among a first balance position, a dead point position and a second balance position, and during normal opening and closing, the two elastic devices are kept at the first balance position with an included angle and apply pressure to the movable contact bridge; when a short-circuit fault occurs, the movable contact bridge is repelled by an electrodynamic force and drives the second ends of the two elastic devices to move relative to the contact support, and the two elastic devices are switched and kept at a dead point position or a second balance position forming an included angle to limit the movable contact bridge. The elastic device improves the reliability of the contact mechanism.

The direct current contactor comprises a shell, a contact mechanism is arranged in a contact cavity of the shell, the contact mechanism comprises a movable contact bridge which moves along a straight line in the contact cavity, an anti-short-circuit structure is further arranged in the contact cavity, and the anti-short-circuit structure comprises a supporting piece, a first armature and a second armature. An elastic piece is connected between the supporting piece and the contact cavity, the first armature and the second armature are oppositely arranged at intervals to form a magnetic gap, the first armature and the second armature are fixed to the supporting piece and the movable contact bridge respectively, and when short circuit occurs, the magnetic gap generates a magnetic field to enable the first armature and the second armature to attract each other. The elastic piece provides buffering force for movement of the supporting piece. According to the invention, the support member is elastically connected through the elastic member, and when the elastic deformation of the elastic member provides a buffer effect for the movement of the support member, the gap between the first armature and the second armature can be eliminated during the overtravel of the product.

Linear control system for flight simulation and other applications. The system employs a moveable handle and handle shaft configured to receive manual user input for linear in-and-out motion over at least a range of several inches and rotation back and forth about the handle-shaft axis. Various rolling contact mechanisms employing a compliant material of appropriate durometer are used to manage friction. Linear motion is detected using a motion-reducing Hall-effect sensor and magnet device, while rotary motion is detected using a different rotary sensor. The device has at least one onboard processor, which can receive, process, and output various sensor measurements to an outside computerized device (such as a computer running a flight simulation program). The onboard processor can also receive actuator commands from the outside computerized device and use them to control onboard linear and rotary actuators to provide haptic feedback to the user.