561 results about "Binding post" patented technology

The invention discloses a radio frequency coaxial connector convenient to plug and unplug, and relates to the technical field of coaxial connectors, the radio frequency coaxial connector convenient to plug and unplug comprises a female head and a male head, the radio frequency coaxial connector convenient to plug and unplug further comprises a jack, the jack is formed in the inner wall of the female head, a contact pin is fixedly installed on the inner wall of the male head, and the shape of the contact pin is matched with that of the jack; the binding post is used for fixing a cable, the fixing device is fixedly installed on the side, away from the contact pin, of the male head and used for combining the male head and the female head, the fixing key is arranged on the outer wall of the female head, the clamping rod pushes the fixing key to be clamped into the limiting groove, rigid mechanical locking is formed, connector loosening caused by vibration and pulling is avoided, and after the clamping rod is reset, the fixing key is clamped into the limiting groove. And the sliding buckle rebounds under the action of the third spring to limit vertical movement of the clamping rod, so that clamping failure is prevented, and long-term stable connection is ensured.

The utility model provides a spring-free type bushing end screen, which belongs to the technical field of bushing end screens and comprises a flange seat, an insulating sealing sleeve is embedded in an inner cavity of the flange seat and is clamped in the inner cavity of the flange seat through a locking component, and a locking thread is arranged at the end part, far away from the flange seat, of a binding post along the outer wall. The inner wall of the side, away from the flange hole, of the flange base is in threaded connection with a grounding piece, the grounding piece is arranged outside the locking thread in a sleeving mode, anti-skid lines are arranged on the outer wall of the grounding piece in the circumferential direction, external threads are formed in the bottom of the outer wall of the grounding piece in the circumferential direction, internal threads are formed in the top of the inner wall of the flange base, and therefore the grounding piece is in threaded connection with the top of an inner cavity of the flange base. After the grounding piece is in threaded connection with the flange seat, the end screen is in a continuous grounding state, stable operation of the transformer is guaranteed under the condition that overall stability is guaranteed, and the protection effect is enhanced.

The invention relates to a current transformer with an open circuit protection function and a protection method thereof, and belongs to the technical field of transformers, the current transformer comprises a transformer body and a protection box arranged at the front end of the transformer body, and the protection box comprises an indication mechanism used for indicating an open circuit fault of the transformer body; the box body is fixedly connected with the mutual inductor body, and a wire outlet groove is formed in the box body and used for secondary wiring; the binding posts are arranged in the box body and are connected with the secondary coil of the mutual inductor body; the protection mechanism is arranged on one side of the binding post; and the alarm mechanism is connected with the protection mechanism and is used for sending open-circuit fault alarm information. According to the device, the binding posts are short-circuited quickly through the protection mechanism, abnormal operation of the transformer caused by open circuit is prevented, continuous operation of a system is ensured, and the reliability and stability of the current transformer are improved.

The invention relates to the technical field of power distribution cabinets, and discloses an anti-electric shock outdoor power distribution cabinet, which comprises a power distribution cabinet, a power-off switch arranged in the power distribution cabinet, a wiring groove arranged on the power-off switch, and a wiring terminal arranged in the wiring groove, the extension part is fixed below the power-off switch and corresponds to the wiring groove, an insulating strip is mounted on the extension part, a power connection fork is rotationally mounted at the top of the insulating strip through a torsional spring, the torsional spring applies torsional force away from the binding post to the power connection fork, and a wire penetrates through the power connection fork and extends out of the tail end of the power connection fork; an insulating wrapping layer is arranged on the top, away from the binding post, of the insulating strip. According to the invention, when the power is cut off through the power-off switch, the wire can be disconnected from the binding post, and the exposed part of the wire can be wrapped in an insulating manner, so that the risk that the exposed wire possibly carries residual current to cause electric shock to maintenance personnel in subsequent maintenance is avoided, and the potential safety hazard is reduced.

The invention discloses a Brook relay with an axial observation window, and relates to the technical field of gas relays. A junction box cover is connected with a junction box, the junction box cover and the junction box form a cavity to protect binding posts, the junction box is provided with a wire outlet for a secondary cable to penetrate through, a lower shell and the junction box form an oil cavity, and a core support is located in the oil cavity and fixedly connected with the bottom of the junction box through screws. An opening cup rotating shaft is arranged on the upper portion of the core support, a shaft hole is arranged on the opening cup, a counter weight is added on an adjusting screw rod on the rear portion, the opening cup rotating shaft penetrates through the shaft hole on the opening cup to be fixed on the core support, the opening cup can rotate, and a yellow drying pipe fixed on the core support and a magnet on the opening cup rotate when the opening cup changes according to the height of the oil level. The gas quantity in the gas relay is detected, an alarm signal is sent out at a set value position, and the alarm signal sent out by the gas relay is transmitted to a background of a control room through a control cable connected to a binding post. And the operation condition and the liquid level height of the opening cup in the oil cavity can be conveniently observed.

The utility model relates to the field of electric power equipment, in particular to a rapid uninterruptible meter changing device, which comprises a bottom support, a connecting seat, a binding post, an on-off structure, a button, a top pipe and a spring short-circuit group, the connecting seat is fixed on the bottom support, the connecting post is arranged in the connecting seat, and the spring short-circuit group is arranged in the connecting seat and positioned on one side of the binding post. The button is slidably arranged on the front end face of the connecting base, the elastic sliding rod is connected to the inner end of the button, the top piece and the push piece are rotatably arranged in the connecting base, the lower end of the top piece is connected with the elastic sliding rod through gear meshing, and the lower end of the push piece is in contact with the upper end of the top piece through an arc surface; the two sides of the lower end of the connecting rod are rotationally connected with the elastic sliding rod and the connecting base, the upper end of the connecting rod is rotationally connected with the ejector rod, the ejector rod is arranged in the ejector pipe in a sliding mode, the ejector pipe is arranged on the upper end face of the connecting base in a sliding mode, more labor is saved in replacement, and work efficiency is improved.

The invention provides a scroll compressor cross ring dynamic strain wireless measuring device, which relates to the technical field of compressor state monitoring and comprises a high-temperature-resistant strain gauge, a wire fixing system and a wireless sensor. Wherein the high-temperature-resistant strain gauges are respectively attached to stress sensitive areas of a static key, a ring beam and a movable key of the cross ring every time; the wire fixing system comprises a three-stage fixing structure formed by an adhesive, an internal wire, an external wire and an internal binding post; the three stages of fixing structures are a strain gauge end fixing structure, a lead transition section fixing structure and a binding post end fixing structure in sequence; the high-temperature-resistant strain gauge is connected with the wireless sensor through an internal wire, a binding post and an external wire, and continuous signal collection is achieved. By implementing operation according to the technical route, the impact load borne by the cross ring at the moment of starting and stopping of the compressor can be collected in a high-quality mode, data collection in a closed cavity is achieved, and an experimental basis is provided for subsequent strength design of the cross ring.

The invention discloses an automatic testing device for a compressor, and the device comprises a docking mechanism which is provided with an inductor. The butt joint mechanism is assembled on the angle adjusting mechanism, and the angle adjusting mechanism drives the butt joint mechanism to rotate around the first axis and the second axis; the rotating assembly is connected with the angle adjusting mechanism, the rotating axis of the rotating assembly is consistent with the central axis of the compressor shell to be tested, and the first axis and the second axis are perpendicular to the rotating axis of the rotating assembly; the rotating assembly drives the angle displacement mechanism and the butt joint mechanism to rotate, and when the sensor detects a positioning point of the compressor to be detected, an electric plug on the butt joint mechanism is opposite to a binding post of the compressor to be detected. Automatic butt joint of the compressor binding post and the electric plug in the assembling process can be achieved, the accuracy is high, the inclination angle of the electric plug can be adjusted by adding the angle adjusting mechanism, and the compressor binding post butt joint testing device is compatible with more types and more complex compressor binding posts.

The invention discloses a contactor contact resistance detection device for power distribution equipment, and relates to the technical field of contactor detection, the contactor contact resistance detection device comprises a workbench, a first supporting table and a second supporting table which are both used for conveying a first supporting seat, and the first supporting seat is provided with a plurality of clamping blocks; a second supporting seat is fixedly mounted in the reference frame, a bearing plate is arranged on the second supporting seat, and a three-phase binding post is fixedly mounted on the bearing plate; an epitaxial plate is fixedly installed on the side portion of the reference frame, an epitaxial frame is arranged on the epitaxial plate, two supports which are symmetrically arranged are fixedly installed on the two sides of the epitaxial frame, three probe columns are arranged in each support, each probe column is connected with a resistance tester, and the probe columns extend into contact inner grooves of the contactor and detect the resistance value of each contact. The defects of low efficiency, poor precision, insufficient coverage and potential safety hazards of traditional manual detection are overcome, and a high-reliability and integrated technical solution is provided for contactor contact resistance detection operation.

The invention relates to the technical field of junction boxes for power supply devices, and discloses a junction box for an electric power supply device capable of avoiding water accumulation of binding posts, the junction box comprises a main frame mechanism, the main frame mechanism comprises a box body, a dehumidification assembly is arranged at the top of the box body, and an adjusting assembly is arranged in the box body. The left side and the right side of the box body are each provided with an anti-disengaging assembly. According to the device, an anti-falling assembly is arranged, specifically, a first rotary knob is rotated clockwise to drive a first threaded rod to rotate, when the first threaded rod rotates, a movable support is driven to move upwards, and at the moment, a first inclined sliding groove moves through the movable support to make the tops of two supporting rods far away from each other; when the tops of the two supporting rods are far away from each other, the two clamping plates are driven to get close to each other, and the two clamping plates clamp and fix a cable while getting close to each other, so that the cable is prevented from being pulled by external force to be separated from the junction box, the stability and reliability of equipment are greatly improved, and a certain guarantee is provided for stable transmission of the equipment.

The invention relates to a metering box with a junction box, and relates to the technical field of metering boxes, the metering box comprises a box body and a box door installed on the box body, and the inner wall of the box body is fixedly provided with a substrate for installing a circuit breaker; a fixing shell and a wiring block are arranged in the box body, one side of the fixing shell is detachably installed on the inner wall of the substrate, and a fixing notch for the wiring block to be installed in is formed in the side face, away from the substrate, of the fixing shell; one side of the wiring block is fixedly provided with a conducting strip connected with a binding post on the circuit breaker, and one side, far away from the conducting strip, of the wiring block is provided with a plurality of wiring holes for connecting and fixing cables; the plurality of cables can be pre-installed in the corresponding wiring holes and are electrically connected with the conductive sheets. In the application, during subsequent installation, only the wiring block provided with the cable needs to be integrally installed in the fixing gap of the fixing shell, and then the conducting strip on the wiring block is connected with the wiring terminal of the circuit breaker.

The utility model relates to a UMU binding post assembly. The technical problem to be solved by the utility model is to provide a UMU binding post assembly. According to the technical scheme, the wiring terminal comprises a wiring terminal connector, a cable, an inner insertion male seat and an outer insertion male seat, the wiring terminal connector comprises a connector body, a connector tightening cap, a front sealing sleeve, a rear sealing sleeve and a cable clamping ring, the connector body is provided with a threaded butt joint column, a connector through hole is formed in the threaded butt joint column, and the connector through hole is communicated with the connector body. The front sealing sleeve comprises a front sealing sleeve positioning part, a front sealing sleeve bearing part and a front sealing sleeve butt joint part, and a clamping receding opening is formed in the outer wall of the front sealing sleeve positioning part. Compared with the prior art, the cable connector has the advantages that the front sealing sleeve and the cable clamping ring are matched with each other, the front sealing sleeve and the cable clamping ring are pressed through tightening of the connector tightening cap, so that the clamping block and the front sealing sleeve positioning part are retracted inwards to clamp a plurality of cables arranged in the front sealing sleeve penetrating hole in a penetrating mode, the clamping force is large, and the sealing waterproof performance is effectively improved.

The utility model discloses an ultrasonic gas meter binding post assembly which comprises a binding post body, a needle-shaped terminal, a waterproof connector needle-shaped male end, a circuit board, a valve signal female end and a metering module signal female end, the circuit board is arranged in the binding post body, the needle-shaped terminal and the waterproof connector needle-shaped male end are both arranged on the circuit board, and the valve signal female end is connected with the metering module signal female end. The number of the waterproof connector needle-shaped male ends is two, the two waterproof connector needle-shaped male ends are arranged on the lower surface of the circuit board, and the valve signal female end and the metering module signal female end are detachably connected with any waterproof connector needle-shaped male end to achieve function transmission. According to the ultrasonic gas meter binding post assembly, connection of an external signal line can be omitted, electromagnetic interference is reduced, and the anti-interference performance of an ultrasonic gas meter is improved; the binding post is simple in structure, the binding post body and the circuit board are injection-molded, and connection is stable; meanwhile, a plurality of sealing grooves are formed and used for sealing the binding posts, the controller and the gas meter shell, and the connection reliability is high.

The invention discloses a power distribution switch assembly and a power distribution cabinet, and relates to the technical field of power distribution cabinets, the power distribution switch assembly comprises a conductive unit and a plugging unit, the conductive unit and the plugging unit are correspondingly arranged, and two sides between the conductive unit and the plugging unit are symmetrically provided with limiting units; a sealing unit is arranged between the conductive unit and the plugging unit, the conductive unit comprises a fixed seat, guide holes are uniformly formed in the end part of the fixed seat in a penetrating manner, binding posts are fixedly arranged in the guide holes, a butt joint groove is formed in one end of the interior of each binding post, and the plugging unit comprises a movable seat; according to the invention, the wiring position of the switch can be effectively sealed, external moisture and impurities can be prevented from entering the switch, in addition, when high temperature is generated at the wiring position, rapid heat dissipation and cooling can be realized, normal work of the switch can be guaranteed, and in addition, when a fire occurs in the power distribution cabinet, connection between the power distribution cabinet and an external power supply can be timely cut off, and external load equipment can be protected.

The invention relates to the technical field of anti-explosion junction boxes, and provides an entrance guard anti-explosion junction box which comprises a mounting bracket, two sealing boxes are erected and mounted at the two ends of the upper portion of the mounting bracket respectively, and a plurality of junction box mechanisms are arranged between the two sealing boxes. Buffering telescopic pipes are connected between the junction box mechanisms and between the junction box mechanisms and the sealing boxes, wire outlet pipes and wiring structures are installed in the junction box mechanisms in a sleeved mode, binding posts are connected to the middles of the wiring structures in a clamped mode, and the two ends of the binding posts are inserted into the two sealing boxes respectively. By arranging the plurality of junction box mechanisms and connecting the sealing box and the junction box mechanisms in series through the sealing box, each junction box mechanism can clamp and communicate the wire outlet pipe to the binding post through the wiring structure, and the wire outlet pipe and the binding post are connected for electric conduction. And the wiring directions of the junction box mechanism and the wire outlet pipe can be freely adjusted in the up-down and front-back directions, so that the device is convenient to use.

The invention, which relates to the technical field of ground wire dismounting, discloses a power system substation ground wire dismounting device comprising a ground rod, and the outer surface of the ground rod close to one end is fixedly provided with a control assembly. When the device is used, the two pressing plates are pressed, the ejector pin is pushed to move into the annular plate from the sealing ring, then the annular solution capsule is punctured, an acetic acid solution in the annular solution capsule flows to the inner wall of the annular plate and then flows into the arc-shaped solution cover, and the acetic acid solution is discharged into the sponge sleeve through the liquid flowing pipe; the outer surface of the binding post body is coated with an acetic acid solution, rust stains are dissolved or converted into substances capable of being scraped, a manual nut is screwed to drive a base plate to rotate, an annular sleeve is driven to rotate through an L-shaped block, a sponge sleeve is promoted to wipe away the dissolved rust stains, and meanwhile a spiral scraping plate can scrape away the rust stains on the outer surface of the binding post body. Therefore, the rust removal effect is achieved.

The invention relates to the technical field of circuit breakers, and discloses a closing device of a circuit breaker, which comprises a circuit breaker body, an upper binding post and a lower binding post arranged on the circuit breaker body, a transmission assembly arranged on the circuit breaker body, and a locking mechanism and an adjusting mechanism arranged on the transmission assembly, an isolation disconnecting link is movably connected between the upper binding post and the lower binding post. The transmission assembly comprises a transmission main rod which is rotatably installed on the circuit breaker body. According to the closing device of the circuit breaker, when a certain phase of line in the three-phase line of the circuit breaker fails, the corresponding faulty line in the A disconnecting link, the B disconnecting link and the C disconnecting link in the isolation disconnecting links can be accurately isolated and powered off, the specific disconnecting links are unlocked, the other disconnecting links are kept in a locked state, power failure of a non-faulty phase is avoided, and the reliability of the circuit breaker is improved. Through the operation mode, other normal lines can be prevented from being influenced by misoperation, and the stability and the reliability of a power system are effectively improved.

The utility model discloses an anti-misplug power socket, which comprises a mounting rack, a gland arranged in the mounting rack, and a panel arranged on one side of the mounting rack, a conductive piece is arranged in the mounting rack, one side of the conductive piece is provided with a binding post, a safety door is movably arranged between the mounting rack and the gland, a vertical rod is arranged on the safety door, and the vertical rod is provided with an anti-misplug power supply. Through holes are formed in the installation frame and the gland, the vertical rods are installed in the through holes in a sliding mode, a threaded column is integrally formed on the inner side wall of the gland, the outer side of the threaded column is in threaded connection with an adjusting disc, and a limiting groove is formed in the safety door. The safety door is prevented from deflecting in the moving process and being clamped, even if the safety door is clamped, the safety door can be driven to move through the vertical rods, the safety door can move smoothly, the situation that a plug is difficult to insert is avoided, the mounting frame is of a thickened solid structure, and the structural strength of the mounting frame is improved.

The utility model provides a tensile detection device for a wiring terminal of a drop-out fuse, and relates to the technical field of tensile detection equipment. The flat plate is detachably mounted on the tension detector through bolts, and a first clamping part and a second clamping part are arranged on the flat plate; the driving assembly is arranged on the flat plate and can drive the first clamping part to wrap the connecting position of the wire and the wiring terminal and drive the second clamping part to clamp the wire at the same time, so that the wiring terminal and the wire are synchronously positioned. When the first clamping part is driven to position the wiring terminal part, the second clamping part is driven to synchronously fix the wire part, so that the wiring terminal and the wire can be positioned in one step, the operation steps and the consumed time required for clamping the wiring terminal and the wire by personnel are reduced, the batch detection requirement is met, and the production and detection efficiency is improved.

The utility model relates to the electromechanical field, in particular to a novel motor reel. Comprising a winding device and a protection device, the protective device comprises a protective surface, a wall body and a connecting part, wherein the connecting part comprises a first connecting lug and a second connecting lug; the first connecting lug and the second connecting lug are respectively provided with a first connecting groove and a second connecting groove, and the upper winding part and the two ends of the binding post are respectively provided with a third connecting groove corresponding to the first connecting groove and a fourth connecting groove corresponding to the second connecting groove; the protection device and the upper winding part are fixed through binding; compared with the prior art, through the arrangement of the first connecting groove, the second connecting groove, the third connecting groove and the fourth connecting groove, the protective device can be effectively fixed through the binding band, so that the protective device can be applied to a motor protective cover with an upper cover, and when the protective device is applied to a motor protective cover without an upper cover, the protective device cannot be damaged. And the situation that the protection device falls off in the transportation process is avoided.

The utility model discloses a contact group for a point switch, which relates to the technical field of railway turnout point switches and is technically characterized by comprising a static contact seat, a movable contact seat and a connecting seat, a plurality of binding posts are mounted on the static contact seat, the connecting seat is arranged inside the static contact seat, and the movable contact seat is arranged on the connecting seat. A connecting seat is fixedly mounted on each binding post; one end of the contact sheet is in sliding connection with the connecting seat, and the other end of the contact sheet is provided with a first guide surface; and one end of the spring is fixedly connected with the connecting seat, and the other end of the spring is fixedly connected with the contact piece, so that the contact piece can be pressed on the movable contact column even if the elastic acting force of the spring is reduced after long-time use, and the connection between the contact piece and the movable contact column can be more reliable.

The utility model relates to a novel magnetic proximity switch which comprises a shell, a mounting cavity is arranged in the shell, a glass tube is arranged in the mounting cavity, the upper end of the glass tube is sleeved with a guide seat, the lower end of the glass tube is sleeved with a sealing seat, the mounting cavity is provided with a magnetic block on the upper side of the guide seat, and a first compression spring is arranged between the magnetic block and the top of the mounting cavity. The lower end of the push rod is connected with a mounting seat, a second compression spring is arranged between the upper side of the mounting seat and the guide seat, and the lower side of the mounting seat is fixedly connected with a metal contact piece. The sealing seat is fixedly connected with a main binding post, a first auxiliary binding post and a second auxiliary binding post which penetrate into the glass tube, the main binding post is provided with a contact piece abutting against the metal contact piece, and the first auxiliary binding post extends to the upper side of the metal contact piece and is fixedly connected with an upper contact. And the second auxiliary binding post is positioned on the lower side of the metal contact piece and is fixedly connected with a lower contact.

The utility model relates to a wall socket, including switch panel, plug bush subassembly, base and binding post, plug bush subassembly includes elastic ground contact pin and electrode plug bush, binding post includes a plurality of conductive piece, wire pressing block and locking bolt, base includes bottom casing and cover casing, the bottom casing is equipped with conductive piece mounting groove cavity, and the cover casing is equipped with conductive piece mounting groove cavity. The conductive piece is arranged in the conductive piece installation groove cavity and forms a wiring cavity, the bottom shell is provided with a wire socket leading to the wiring cavity, the wire pressing block is limited to slide in the wiring cavity, the wire pressing block and the conductive piece are correspondingly matched to form a movable wire clamping opening for clamping and fixing a wire, and the locking bolt is screwed on the wire pressing block in a threaded mode. The cover shell is provided with an assembly concave cavity, the conductive part is installed in the conductive part installation groove cavity along the opening of the assembly concave cavity, the cover shell is provided with an operation hole corresponding to the wiring cavity in position, the head of the locking bolt is exposed in the operation hole, and the switch panel is arranged on the cover shell in a covering mode and covers the operation hole, and is detachably installed on the base. And the wire dismounting operation is simple and convenient.

The utility model relates to a transformer, in particular to an oil-immersed transformer convenient to overhaul. The oil-immersed transformer convenient to overhaul comprises a shell, a binding post, a radiator, an outer cover, a window, a hinge, a coil, a fixing frame and the like. Binding posts are arranged on the front side and the rear side of the shell, a radiator is arranged on the left side of the shell, an outer cover is arranged on the top of the shell, hinges are connected between the top of the rear side of the shell and the bottom of the rear side of the outer cover, and the shell and the outer cover are hinged through the hinges. According to the utility model, through the design of the U-shaped pull rod, the bolt, the clamping block and the spring, the fixation of the coil can be quickly released by simply pulling out the bolt and pulling the U-shaped pull rod, and the operation is simple, convenient and quick; and when the coil is fixed again, only the bolt needs to be pulled out, and the clamping block automatically resets under the action of the spring to fix the coil, so that the mounting and dismounting processes of the coil are simplified, the maintenance efficiency is improved, and the labor cost is reduced.

The utility model relates to the technical field of wiring terminal injection molding, and discloses a wiring terminal shell production injection mold convenient to demold, a moving device is composed of a frame body, a threaded rod, a threaded sleeve, a motor, a sliding rod, a sliding block and a U-shaped frame, the frame body is fixedly installed in a supporting rod, the threaded rod is rotatably installed in the frame body, and the threaded sleeve is installed in the U-shaped frame. The threaded sleeve is installed on the surface of the threaded rod in a threaded mode, the motor is fixedly installed on the side face of the frame body, the sliding rod is fixedly installed in the frame body, and the sliding block is installed on the surface of the sliding rod in a sliding mode. According to the wiring terminal shell production injection mold convenient to demold, a lower mounting base is driven by a driving motor and a shaft rod to move, after the lower mounting base moves by a specified distance, an electric push rod is started, and a moving block can move on the surface of a fixed shaft under the action of a connecting rod, so that the lower mounting base rotates around the shaft rod, and automatic discharging is completed; the use is convenient and the effect is good.

The utility model discloses a compressor protecting cover assembly capable of being installed at multiple angles, which comprises an upper cover, and a binding post is fixedly installed on the top surface of the upper cover. According to the multi-angle installed compressor protecting cover combination, the angle of the protecting cover body can be conveniently adjusted through the arranged second tooth block and the first tooth block, the protecting cover body is taken up to be pressed and inserted into the mounting ring during use, and the connecting rod can be propped open through the bottom ring during insertion so that the bottom ring can be attached to the top face of an upper cover; when the angle needs to be adjusted, the protective cover body is rotated forcibly to drive the first tooth block so that the second tooth block can abut against the first tooth block to conduct angle adjustment, and meanwhile the protective cover body can be prevented from falling off through a bottom ring; and then the protecting cover body is loosened, the second tooth block can fix the position of the protecting cover body through the cover plate, adjustment is convenient, the adjusting range is large, and practicability is good.

The utility model discloses a modularized power distribution switch, which relates to the technical field of power distribution switches and comprises a switch insulating shell, a connecting wire protection unit, a main body unit and an external unit. The middle of the inner side of the switch insulating shell is fixedly connected with an insulating mounting plate. The connecting line protection unit comprises a placement groove, a threaded hole, a limiting insulation protection shell, a fixing groove, a binding post protection cover, a fixing bolt and a binding post, the placement groove is formed in the lower end of the insulation mounting plate, the fixing groove is formed in the upper end of the threaded hole, and the binding post is fixedly connected into the fixing groove; the binding post protection cover is fixedly connected with the binding post through a fixing bolt, the placing groove is connected with the limiting insulation protection shell in a clamped mode, and the fixing groove is fixedly connected with the limiting insulation protection shell through a fixing bolt. The main body unit is fixed on the insulating mounting plate; according to the modularized power distribution switch, contacted wires can be well protected, and a plurality of switches can be rapidly assembled.

The utility model discloses a sealed knob switch, which relates to the field of electrical equipment and comprises a shell, a rotating rod, a knob, a rotating block, a base, a second binding post, a contact piece, a first sealing ring, a second sealing ring and a plurality of first binding posts. When the rotary knob is rotated, the rotary knob drives the rotary block to rotate through the rotary rod, the rotary block drives the contact piece to rotate, one end of the contact piece abuts against the second binding post all the time, the other end of the contact piece makes contact with the multiple first binding posts in sequence, and therefore switching of multiple kinds of connection is achieved. In the long-term use process, the first sealing ring plays a dustproof and waterproof role, and the second sealing ring performs secondary protection, thereby improving the sealing performance of the knob switch, prolonging the service life of the knob switch, and preventing water, dust and other impurities from entering the knob switch, causing faults, and further preventing the use effect from being affected.

The invention relates to a novel crab-claw-shaped jointing clamp for overhauling a direct-current storage battery pack of a transformer substation and a using method, and belongs to the field of storage battery bridging equipment. The wiring clamp is symmetrically provided with two clamping parts, and wiring connecting plates are arranged above the inner sides of the clamping parts; the clamping part comprises a chuck and a connecting plate, the exterior of the chuck is arc-shaped, the interior of the chuck is concave, the chuck is arranged at the front end of the connecting plate, the chuck and the connecting plate are integrally formed, the wiring clamp is connected with a binding post of a storage battery through the chuck, the wiring connecting plate comprises a fixing plate and a conductive connecting plate, one end of the wiring connecting plate is the fixing plate, and the other end of the wiring connecting plate is the conductive connecting plate. The fixing plate and the conductive connecting plate are integrally formed parts, the fixing plate is fixedly connected with the connecting plate, a clamping bolt and a nut are arranged on the fixing plate, and a wiring bolt is arranged on the conductive connecting plate; the shape of the jaw at the front end of the wire clamp is improved, and the chuck and the clamping strip are designed, so that the effective contact surface between the wiring wire clamp and the storage battery is effectively increased, and reliable and firm wiring is ensured.

The utility model discloses a waterproof sealed switch, which relates to the technical field of switch structures and comprises a switch base and a switch upper cover which are matched with each other, a binding post is arranged in an internal cavity structure formed by the switch base and the switch upper cover, and contacts are movably arranged on the side portions of the switch base and the switch upper cover. A pressure spring is arranged between one end of the contact and the binding post, a sealing ring is arranged on a matching surface between the switch base and the switch upper cover, a sealing ring is arranged outside the contact and at the position where one end of the switch base and one end of the switch upper cover extend out, and sealant is arranged at the position where the binding post extends out of the upper end of the switch upper cover. In order to solve the problems, the utility model provides the waterproof sealed switch, the sealing ring is arranged between the switch base and the switch upper cover, and the sealing sheath is designed at the position of the contact, so that the sealing sheath can still play a sealing role along with the extrusion of the contact, thereby ensuring that rainwater cannot enter the switch and achieving a rainwater-proof function.