309 results about "Contact mechanism" patented technology

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 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.

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 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 utility model discloses a hydraulic support roof-contacting device, belongs to the technical field of coal mining equipment, and solves the problem that support top beams of hydraulic supports are not compactly contacted with the roof due to unevenness of roadway roofs. Comprising a closed high-pressure liquid tank, the lower portion of the high-pressure liquid tank is detachably connected with a support top beam of a hydraulic support, a plurality of floating type roof-contacting mechanisms are arranged on the upper portion of the high-pressure liquid tank, driving parts of the floating type roof-contacting mechanisms are located in the high-pressure liquid tank, and roof-contacting parts of the floating type roof-contacting mechanisms are located above the top of the high-pressure liquid tank. And a high-pressure liquid medium with a constant volume is arranged in a liquid cavity of the high-pressure liquid tank. The hydraulic support is reasonable in design, compact in structure and capable of automatically adjusting the telescopic length of a plurality of floating type roof contact mechanisms according to the actual shape of the roadway roof so as to be tightly attached to the uneven and undulating roadway roof, and the supporting effect and the use safety of the hydraulic support are effectively improved.

The invention discloses a horizontal hydraulic non-metal packing machine, and relates to the technical field of non-metal hydraulic packing. A body is included; the feeding conveyor is mounted at the outer part of the machine body; the door opening cylinder is mounted outside the machine body; the bag discharging platform is connected with the machine body, and a motor is arranged in the bag discharging platform; the clamping seat is mounted at the outer part of the feeding conveyor; the contact mechanism is installed on the outer portion of the bag discharging platform, the contact mechanism comprises a circular plate, and a replacement assembly is installed on the outer portion of the circular plate; the pretreatment mechanism comprises a fourth push rod, a connecting rod is installed at the bottom of the fourth push rod, a cylinder is arranged below the connecting rod, the cylinder is sleeved with a sponge shell, and the fourth push rod is used for controlling the cylinder and the sponge shell to ascend and descend. And the purpose of improving the use efficiency of the equipment is achieved.

The invention relates to the technical field of charging and battery replacing devices, and discloses a new energy ship charging and battery replacing device and a use method thereof.The new energy ship charging and battery replacing device comprises a movable plate rotationally connected to the outer wall of the end, away from a guide shell, of a rotating rod, and a connecting rod is rotationally connected to the outer wall of the rotating rod; a contact conductor is rotationally connected to the outer wall of one end, away from the rotating rod, of the connecting rod; along with further insertion of the plug, the connecting rod drives the inner wall of the contact conductor to contact the outer wall of the plug, further rotation of the connecting rod under the limitation of the plug enables the contact conductor to rotate around the joint with the connecting rod, and at the moment, the torsional spring II accumulates potential energy, so that the contact conductor clings to the outer wall of the plug; and for plugs of different specifications, the plugs can be charged within a certain range through the contact mechanism, so that the adaptability of the device is enhanced to a certain extent, and the construction cost is reduced.

The utility model relates to the field of ceramic grinding machines, and discloses an automatic centering ceramic grinding machine which comprises a machine table, a motor is arranged on the inner wall of the top end of the machine table, the output end of the motor is fixedly connected with a rotating disc, an arc groove is formed in the inner wall of the rotating disc, and a contact mechanism is arranged on the inner wall of the arc groove. A supporting frame is arranged at the top end of the machine table, a grinding disc is arranged at the bottom end of the supporting frame, a dust removal assembly is arranged on the side wall of the supporting frame, the contact mechanism comprises a movable rod, the movable rod is slidably connected to the inner wall of the arc groove, and a contact plate is fixedly connected to the top end of the movable rod. According to the utility model, the contact plate is driven to be close to the workpiece through infrared induction of the sensor, the external equipment driving motor, the turntable and the arc groove, so that the grinding and centering are quickly realized, the operation is convenient and fast, the centering efficiency and precision are greatly improved, and a good foundation is laid for subsequent grinding.

This invention discloses a welding device and process for steel manufacturing, relating to the field of steel pipe welding technology. The device includes: a rotating base on which a steel pipe body is centrally placed; an outer welding mechanism is circumferentially mounted on the rotating base; and a liftable inner welding mechanism is suspended above the rotating base. The inner welding mechanism includes an annular shell, an annular barrier, a telescopic component, a drive mechanism, a contact mechanism, a movable frame with a polishing wheel, and an inner welding gun. The annular shell and the annular barrier are coaxially arranged and connected by a rotatable telescopic component. The movable end of the telescopic component extends to the outside of the annular barrier and connects to the movable frame. The inner welding gun is mounted on the movable frame, and the drive mechanism is installed between the annular shell and the polishing wheel. This invention solves the problem of difficult welding on the inner side of steel pipes by coordinating the inner and outer welding mechanisms, and integrates grinding, welding, and polishing processes into one, significantly improving processing efficiency and weld quality.

The application discloses a flat-pressing flat carton die-cutting indentation machine and relates to the technical field of printing. The application is characterized by the following: the cleaning contact mechanism is arranged; the die-cutting knife and the indentation knife on the height adjusting mechanism are driven to perform the downward pressing operation; the connecting frame is synchronously driven by the transmission mechanism to drive the swing plate to swing; the swing plate swings on the surface of the flat carton; the pre-cleaning of the chippings on the flat carton can be realized; the self-ignition of the die-cutting knife and the chippings due to high temperature is avoided; and the swing plate swings on the other side of the die-cutting groove and does not affect the die operation when the die-cutting knife performs the die-cutting operation.

The invention relates to the technical field of disconnecting switches, in particular to a switching device with an arc extinguishing system, which comprises a base, a cover body matched with the base and an enclosed cavity arranged between the base and the cover body, the enclosed cavity comprises shells stacked from top to bottom, and a rotary contact mechanism, a static contact, a medium cover and a transmission mechanism are arranged in the shells; the rotary contact mechanism can rotate around the central axis and is used for being connected with the static contact to achieve closing or being disconnected to achieve opening. According to the switching device with the arc extinguishing system, the core problems that the voltage boosting of a small-size single-pole switch is limited, the arc extinguishing is difficult and the like are effectively solved. Through the synchronous action of the sickle-shaped dielectric cover and the rotary contact mechanism, the static contact is coated and the arc path is cut off during opening, and an arc-resistant gas-generating insulating material is matched, so that the arc voltage can be quickly increased, the disconnection voltage of products with the same volume is increased to more than DC800V from DC400V, and the industrial voltage specification requirements of 400V and more are met.

The utility model discloses a building construction pile auxiliary detection device which comprises a contact mechanism, a connecting mechanism and a detection mechanism, the contact mechanism is fixedly installed at one end of the connecting mechanism, and the detection mechanism is movably installed at the other end of the connecting mechanism. The detection mechanism comprises a mounting sleeve, a detection rod, a first horizontal bubble and a second horizontal bubble, the first horizontal bubble is mounted at the contact mechanism, and the first horizontal bubble is used for detecting the mounting levelness of the contact mechanism. The contact seat and the mounting sleeve are adjusted to be in a horizontal state, then the ejector block of the detection rod is ejected to the surface of the pile, the extension length of the detection rod can be converted into perpendicularity data of the pile, and a user can quickly judge the perpendicularity of the pile by observing scales on the detection rod; the device is simple and convenient to operate, can quickly detect the perpendicularity of the pile, and is convenient for a user to detect the perpendicularity of the pile.

This invention relates to a reusable autoinjector, belonging to the field of drug injection technology. The reusable autoinjector provided by this invention, through the systematic integration of an innovative anti-accidental contact mechanism and a needle depth adjustment mechanism, not only effectively solves the core safety and accuracy challenges in reusable scenarios, but also produces significant technical effects through the synergistic effect of the two mechanisms. It is the first invention to integrate two major functions—active mechanical anti-accidental contact and multi-level stable depth adjustment—into a single reusable device.

A contact mechanism of double-contact circuit breaker. Mainly solve the current double-contact circuit breaker using two dynamic contact pieces to set two dynamic contacts to realize breaking, the problem of low synchronization rate. Its characterized in that: the static contact piece includes the main piece, the main piece is provided with the first piece and the second piece integrally manufactured, the static contact point includes the first static contact point arranged on the first piece and the second static contact point arranged on the second piece; the dynamic contact piece includes the piece body, the dynamic contact point includes the first dynamic contact point and the second dynamic contact point arranged on the piece body, the first dynamic contact point and the second dynamic contact point are provided with the gap groove, the first dynamic contact point is arranged opposite to the first static contact point, and the second dynamic contact point is arranged opposite to the second static contact point. The utility model provides a kind of contact mechanism of double-contact circuit breaker, and two dynamic contacts are set on one dynamic contact piece, and the synchronization rate is high, and two static contacts are arranged oppositely, two arcs are generated when breaking, and the energy of single arc is reduced.

This invention relates to the field of low-voltage electrical appliances, specifically to a circuit breaker, which includes a contact mechanism comprising a first contact structure and a second contact structure pivotally disposed opposite to each other; the contact mechanism further includes a first connecting rod, a second connecting rod, and a sliding block, the two ends of the first connecting rod being hinged to the sliding block and the first contact structure, respectively, and the two ends of the second connecting rod being hinged to the sliding block and the second contact structure, respectively; the sliding block, through the first connecting rod and the second connecting rod, drives the first contact structure and the second contact structure to rotate synchronously towards each other to close and synchronously in opposite directions to open; the circuit breaker has a faster breaking speed and a larger opening distance.

This invention discloses a method for manufacturing anti-slip children's shoes, relating to the field of anti-slip children's shoe production technology. The manufacturing process comprises a testing platform, a dynamic abrasive unit, a segmented control contact mechanism, and an asynchronous linkage mechanism. The dynamic abrasive unit automatically adjusts and changes the coefficient of friction during abrasion resistance testing. A shoe sole block is mounted on the right side of the trigger component. A cooperating unit works with the trigger component to move the shoe sole block, pushing against the foot area of ​​the shoe sole to contact the dynamic abrasive unit for testing. This invention uses a segmented control contact mechanism to bend the anti-slip children's shoe into three sections, allowing for separate testing of the forefoot, midfoot, and heel areas of the sole, providing more detailed wear data. Furthermore, by simulating the actual wear under heel-first and forefoot-first gait conditions through reciprocating oscillation, the invention improves the accuracy, representativeness, and data quality of the test, making the test results more practically meaningful.

The application discloses a kind of salt and alkali land breeding with white shrimp of South America compound feed raw material crushing equipment, it is related to white shrimp of South America compound feed raw material crushing technical field, the side surface of the crushing tank is fixedly connected with control panel, the bottom of the crushing tank is fixedly connected with driving part, the side of the crushing tank away from control panel is fixedly connected with discharge part, the present application is provided with contact mechanism, the output end of driving part drives crushing rod to rotate continuously, so that when the material in the crushing tank is slowly discharged, the extrusion force of the material in the tank to sliding plate is less than the centrifugal force when crushing rod rotates, sliding plate and sliding rod are moved to the inside of the crushing tank by the action of centrifugal force, so that sliding plate drives rubber block to move to the inside of the crushing tank, while colliding with the inside of the crushing tank by rubber block, while the impact force generated by vibration, part of the impurities attached in the inside of the tank is shaken off.

This invention relates to the field of injection mold technology, and particularly to a hot runner linked hot nozzle, comprising a hot runner plate, a support cylinder, a hot nozzle, a movable contact mechanism, a heat conduction mechanism, and a limiting and fixing mechanism. This invention solves the following problems existing in hot runner hot nozzles: the rigid contact between the hot nozzle and the gate is easily subjected to impact and wear during the opening and closing of the moving and fixed molds, leading to overflow when injecting molten plastic; after injection, a small amount of molten plastic remains between the injection end of the hot nozzle and the gate, easily causing gate blockage, and injection into the mold cavity can lead to product defects; this invention can control the contact between the hot nozzle and the gate to only occur during molten plastic injection, preventing rigid contact between the hot nozzle and the gate, effectively avoiding overflow caused by damage to the contact surface of the hot nozzle and the gate; this invention can conduct the heat of the molten plastic to the inside of the hot nozzle and the molten plastic between the bottom of the hot nozzle and the gate for heat preservation, preventing it from cooling and solidifying.

To provide a contact mechanism that can further suppress the electromagnetic repulsive force that may occur when current is applied. [Solution] A contact mechanism 100 according to one aspect of the present disclosure comprises a movable element 110, a first stator 120, a second stator 130, a connecting member 140 that connects the movable element 110 and the movable iron piece 150 and drives the movable element 110 with an electromagnet having a movable iron piece 150, and an auxiliary yoke 160 that is positioned inside the first stator 120 and the second stator 130 in a first direction and on the first surface side of the movable element 110, wherein the first stator 120 extends in the first direction from a first connection to a first fixed contact, the second stator 130 extends in the first direction from a second connection to a second fixed contact, and the movable element 110 is planar when viewed from the first direction at the location on the first surface corresponding to the location where the auxiliary yoke 160 is positioned.

The invention relates to the technical field of screen detection, and discloses an aging test and performance detection integrated device for an OLED screen, the aging test and performance detection integrated device comprises a test box and a contact mechanism fixedly connected to the inner wall of the test box, the contact mechanism comprises a pressing plate and a first rectangular frame, the interior of the pressing plate is rotatably connected with a first rotating sleeve and a third screw rod, the first rotating sleeve is rotatably connected with a second screw rod, and the second screw rod is rotatably connected with a second screw rod. The screw rod II is rotationally connected with a rotating sleeve II, the outer surface of the screw rod II is in threaded connection with a rotating sleeve III, the outer surface of the rotating sleeve II is rotationally connected with a rectangular frame I, the outer surface of the rotating sleeve III is rotationally connected with a C-shaped rotating frame, and the outer surface of the C-shaped rotating frame is fixedly connected with a hydraulic cylinder I; a first sliding frame is slidably connected between the two side edges of the first rectangular frame, a rectangular sliding block is clamped in the first sliding frame, a spring is fixedly connected to the lower surface of the rectangular sliding block, and an electromagnetic contact is fixedly connected to the bottom end of the spring. The pressing plate and the first rectangular frame enable the power contact to incline, the power contact can be attached to the electromagnetic contact more tightly, and tiny deviation of the contact is compensated.

The invention provides a contact mechanism and a change-over switch, and relates to the low-voltage electrical field. The contact mechanism comprises a first static contact, a second static contact, a moving contact assembly, a driving assembly and an elastic energy storage piece, one end of the elastic energy storage piece is connected with the moving contact assembly, and the other end of the elastic energy storage piece is rotationally connected with a shell of a change-over switch; the driving assembly can drive the elastic energy storage part to rotate and store energy, and when the elastic energy storage part rotates to a preset point, the elastic energy storage part can release energy and drive the moving contact assembly to rotate, so that the moving contact assembly is switched on with the first static contact or the second static contact. According to the contact mechanism, rapid opening and closing between the moving contact and the static contact can be realized through the energy storage and release processes of the elastic energy storage member, and the speed and reliability of the circuit conversion process are improved.

The application relates to the field of relays and discloses an RF relay with a bifurcated structure, which comprises an RF cavity, a static contact mechanism is arranged in the RF cavity, a dynamic contact mechanism and a power mechanism are arranged above the static contact mechanism, the static contact mechanism comprises a main static contact piece, a plurality of slave static contact pieces are arranged around the periphery of the main static contact piece; the dynamic contact mechanism comprises a main dynamic contact piece, the main dynamic contact piece is located above the main static contact piece, the main dynamic contact piece extends outward with the main dynamic contact piece as the center, and a plurality of contact arms are formed; the ends of the contact arms, which are away from the main dynamic contact piece, extend outward to form two slave dynamic contact pieces, each slave dynamic contact piece is arranged in one-to-one correspondence with each slave static contact piece to expand the number of channels of the relay, and each slave dynamic contact piece is in contact connection with the corresponding slave static contact piece to turn on the corresponding RF channel. The scheme realizes the multiplication of the number of branches of the RF relay without reducing the working frequency of the relay.

The present disclosure relates to the technical field of circuit protection, and provides an excitation integrated contactor. A contact mechanism in the excitation integrated contactor comprises a static contact assembly, a moving contact assembly, and a first elastic assembly; a driving mechanism drives the moving contact assembly to move relative to the static contact assembly, so as to achieve opening and closing; the first elastic assembly acts on the moving contact assembly, and has an elastic tendency to engage the moving contact assembly with the static contact assembly; and an excitation mechanism is arranged opposite to the moving contact assembly, and when an excitation state is triggered, the excitation mechanism drives the moving contact assembly to move away from the static contact assembly. On the basis of having the opening and closing functions, the excitation mechanism can drive the moving contact assembly to quickly move away from the static contact assembly in an emergency state such as current overload, thereby overcoming the limitation of the response rate of the driving mechanism, achieving rapid circuit disconnection, improving the operation safety of the circuit system, and also realizing optimizations, such as contactor reuse, anti-reset after excitation disconnection, and prevention of high-pressure explosion, by means of form transformation.

A device comprising: a contact mechanism (or switch); an actuation knob; and a housing. The contact mechanism (or switch) comprises: an actuating mechanism; a first conductor; a second conductor; and a moveable contact moveable, by the actuating mechanism, between a first, closed, position in which a current conduc-tion path is defined through the first, second and moveable conductors of the contact mechanism and a second, open, position in which no current conduction path is defined. The actuation knob (or knob) comprises: a first side configured to drive the actuating mechanism upon rotation of the actuation knob, the first side comprising a cam portion which directly engages with the actuating mechanism; a second side opposite the first side; and an engagement portion protruding from the second side and configured for engagement by a user. The housing encloses both the contact mechanism and the first side of the knob.

The application relates to the low-voltage electrical field and particularly relates to a circuit breaker, a first contact system of which comprises a first moving contact mechanism, a first static contact and a second static contact arranged on the two sides of the first moving contact mechanism respectively, a first arc extinguishing system comprising a first arc extinguishing chamber and a second arc extinguishing chamber, a button mechanism, an operating mechanism and the first moving contact mechanism being sequentially and drivingly connected; the button mechanism, the operating mechanism and a first incoming line end are sequentially arranged along the length direction of the circuit breaker and are all located on one side in the width direction of the circuit breaker; the first outgoing line end, the second arc extinguishing chamber, the first moving contact mechanism and the first arc extinguishing chamber are sequentially arranged along the length direction of the circuit breaker and are located on the other side in the width direction of the circuit breaker, the first outgoing line end and the button mechanism are located on one end in the length direction of the circuit breaker, and the first arc extinguishing chamber and the first incoming line end are located on the other end in the length direction of the circuit breaker; the circuit breaker is reasonable in layout and compact in structure.

The application discloses a horizontal hydraulic nonmetal packing machine and relates to the technical field of nonmetal hydraulic packing. The horizontal hydraulic nonmetal packing machine comprises a machine body, a feeding conveyor, a door opening cylinder, a packing platform, a clamping seat and a contact mechanism. The feeding conveyor is installed outside the machine body. The door opening cylinder is installed outside the machine body. The packing platform is connected with the machine body and is internally provided with a motor. The clamping seat is installed outside the feeding conveyor. The contact mechanism is installed outside the packing platform and comprises a round plate which is externally provided with a replacement assembly. The contact mechanism further comprises a pretreatment mechanism which comprises a fourth push rod. The bottom of the fourth push rod is provided with a connecting rod. The lower portion of the connecting rod is provided with a cylinder. The outer portion of the cylinder is provided with a sponge shell. The fourth push rod is used for controlling the lifting of the cylinder and the sponge shell. The horizontal hydraulic nonmetal packing machine can improve the use efficiency of the equipment.

A circuit breaker comprises a shell, and a manual driving mechanism, an operating mechanism, a contact mechanism and a wiring structure which are arranged in the shell, the manual driving mechanism and the wiring structure are respectively arranged at two opposite ends of the shell along a first direction, and two plugging mechanisms of the wiring structure are arranged side by side at an interval along a second direction. The operating mechanism is arranged between the manual driving mechanism and the wiring structure, two arc extinguishing mechanisms which are arranged side by side along a third direction are arranged between the operating mechanism and the wiring structure, two moving contacts and two static contacts are arranged between the operating mechanism and the two arc extinguishing mechanisms, and the two static contacts correspond to the two moving contacts respectively. The two arc extinguishing mechanisms correspond to the two static contacts respectively, the first direction, the second direction and the third direction are perpendicular to each other, back-in and back-out can be achieved, and the circuit breaker has the advantages of being compact in structure and convenient to operate.

The invention relates to the technical field of automatic testing, in particular to a vehicle-mounted touch screen testing device and method. The testing device comprises a moving mechanism, a mechanical arm and a contact mechanism. The moving mechanism comprises a moving seat and a rotating disc, the moving seat is mounted on a sliding rail of a co-driver seat, and the rotating disc is rotationally mounted on the moving seat; the mechanical arm is installed on the rotating disc and comprises a plurality of rotatable telescopic arms and an included angle adjusting mechanism, and the rotatable telescopic arms are sequentially connected through the included angle adjusting mechanism. The contact mechanism is installed on the mechanical arm and comprises an angle detection module and a contact module, the angle detection module is used for detecting the angle of a screen, and the contact module is used for touching the screen. According to the testing device, testing can be completed in situ on the vehicle, the touch angle can be automatically adjusted, and the accuracy and reliability of the testing result of the vehicle-mounted touch screen are improved.

The utility model discloses a chemical safety valve which comprises a valve pipe, a tap pipe, a contact mechanism and a sealing mechanism, the contact mechanism and the sealing mechanism are installed at the upper end of the valve pipe, a first connecting shaft is connected to the inner wall of a first telescopic groove in a penetrating mode, a contact piece is fixedly arranged on the top of a spring, and a pressure sensor is installed on one side of the inner wall of the first telescopic groove. A floating ball is fixedly arranged at the other end of the first connecting shaft; according to the utility model, when the chemical pipeline is controlled and sealed through the valve pipe, and the internal pressure of the pipeline is overlarge due to the continuous increase of the fluid amount, the floating ball connected with the first connecting shaft is pressed to push the first connecting shaft to slide in the first telescopic groove, so that the contact piece at the upper end is in contact with the pressure sensor; and then a second connecting shaft in the sealing mechanism is driven to drive a sealing ball to move in the valve pipe, the sealing state in the valve pipe is relieved, fluid is discharged, pipeline breakage caused by too large internal pressure is prevented, and the use safety of the chemical safety valve is improved.