54 results about "Crocodile clip" patented technology

The invention discloses a clip-and-play general electrosurgical instrument interface, which relates to the technical field of electrosurgical instruments and comprises a rubber sleeve, an alligator clip main body, a wire, an insulating film assembly, a double-clamping assembly and a folding take-up assembly, according to the device, the insulating film assembly is arranged, the insulating film assembly achieves rapid winding and wrapping of the exposed part of an instrument through a pre-stored insulating film for insulation protection, electric leakage is avoided, the double-clamping assembly adopts a two-stage structure in which a conductive brush is pre-clamped and a clamping strip abuts against and is locked, the device is adaptive to different instruments, the conductive stability is ensured, and meanwhile the device is convenient to use. The folding take-up assembly folds the wire to the position parallel to the instrument through a push shaft unlocking and spring reset mechanism, operation interference of the wire is eliminated, and in this way, individuation, flexibility, accuracy, safety and operation efficiency of the electrosurgical instrument are improved through cooperation of the folding take-up assembly, the wire take-up assembly and the wire take-up assembly.

1. The name of the design product: crocodile clip (UT-C13). 2. The use of the design product: the design product is used for temporary circuit connection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to a device for assisting in the handling and implantation of at least one electrode support(s) for a cardiac device, in particular a cardiac pacing device, said at least one electrode support(s) comprising a distal end and a proximal end, the proximal end comprising at least one connector configured to be in electrical connection with at least one portion of the distal end, characterized in that said device comprises: - a body, preferably one-piece, configured to cover at least one portion of said at least one connector, - at least one receiving portion for a means of temporary electrical connection, such as a crocodile clip, said at least one receiving portion being electrically conductive, - at least one connection element in electrical connection with said at least one receiving portion, said at least one connection element being in controlled tangential contact with said at least one connector.The invention also relates to the use of this device for the transfer of electrical signals into or from a cardiac stimulation device electrode, as well as a method for assembling this device.

The utility model relates to the technical field of electro-corrosion production equipment, in particular to a length-adjustable alligator clip. The alligator clip with the adjustable length comprises an alligator clip body, a switching rod, a connecting rod and a hanging piece which have the conductive function, the alligator clip body is used for clamping and fixing a workpiece, the two ends of the switching rod in the axial direction are provided with a first switching part and a second switching part respectively, the first switching part is detachably connected with the tail of the alligator clip body, and the second switching part is detachably connected with the tail of the alligator clip body. The connecting rods are located between the adapter rod and the hanging piece, the number of the connecting rods is adjustable, the two ends of each connecting rod in the axial direction are provided with a first connecting part and a second connecting part correspondingly, and the two ends of each hanging piece in the axial direction are provided with a hanging part and a fixing part correspondingly; the first connecting part on one connecting rod can be detachably connected with the second adapter part or the second connecting part on the other connecting rod, the fixing part is detachably connected with the second connecting part on the connecting rod, and the hanging part can be hung and fixed on the electrocorrosion tool.

The invention discloses a refueling rubber tube resistance automatic measuring instrument, which is characterized in that an adjustable clamp I and an adjustable clamp II respectively comprise a clamp unit, a measuring meter is mounted on the clamp unit of the adjustable clamp I, a measuring meter negative electrode of the measuring meter is connected with an alligator clip through a lead I, the alligator clip is connected with the clamp unit of the adjustable clamp II, and the alligator clip is connected with the clamp unit of the adjustable clamp II. And the positive electrode of the measuring meter is connected with the pliers unit of the adjustable pliers 1 through a lead 2. The operation safety is guaranteed, and the safety risk is reduced; the equipment management efficiency is improved; the operation cost is reduced; industry specifications are met, and compliance requirements are met; optimizing the test fixture; by strengthening safety guarantee and optimizing equipment management, reliable technical support is provided for the aviation oil filling link, and stability and high efficiency of aviation operation are indirectly guaranteed.

The utility model discloses a contact detection device for failure analysis of an automobile production line, which belongs to the line detection jig technology and comprises a universal meter and a contact connection mechanism, and a connection lead is inserted into the surface of the universal meter. The contact connecting mechanism comprises an alligator clip electrically connected to one end of the connecting wire, the bottom of the alligator clip is rotatably connected with a conductive column, and the surface of the conductive column is fixedly connected with a conductive pen; detection personnel can freely select the connection mode with the line contact through the contact connection mechanism so as to meet the detection requirements under different space limitations, and the detection personnel do not need to store various types of contact connection structures, so that the detection personnel can store and use the contact connection structures more conveniently.

The utility model discloses a metering device automatic alignment device, which comprises a storage assembly, a protection mechanism, an auxiliary mechanism and a main detector, a wire harness is fixedly connected in the main detector, one end of the wire harness far away from the main detector is fixedly connected with an extension wire, the wire harness is arranged on the outer side of the storage assembly, the storage assembly is arranged in the protection mechanism, and the auxiliary mechanism is fixedly connected with the extension wire. An alligator clip is fixedly connected to the top end of the extension line, an auxiliary mechanism is arranged on the outer side of the extension line, the storage assembly comprises a storage roller, a handle, a connecting groove and a limiting screw rod, a wire harness is wound around the outer side of the storage roller, the handle is fixedly connected to the front side of the storage roller, and the limiting screw rod is in threaded connection with the interior of the handle. And a limiting screw rod is arranged in the connecting groove. The automatic wire aligner of the metering device is provided with the storage assembly, so that wire harnesses are convenient to store, the protection mechanism is arranged, so that the wire harnesses can be protected, and the auxiliary mechanism is arranged, so that extension wires on one wire harness are not easy to wind together.

The utility model belongs to the technical field of alligator clip test terminals, and particularly relates to an adjustable alligator clip test terminal comprising a lower clamping plate, and the top of the lower clamping plate is rotatably provided with an upper clamping plate through a rotating shaft. A supporting mechanism is arranged in the lower clamping plate, and an adjusting mechanism is arranged at one end of the upper clamping plate. The adjusting mechanism comprises a limiting assembly, and the limiting assembly pushes the mounting rod to drive the clamping block to do linear motion, so that the clamping block is connected with the clamping tooth base in a clamped mode. According to the alligator clip, the clamping force of the alligator clip can be adjusted through the adjustable supporting mechanism, so that damage can be avoided when a fragile element is connected, meanwhile, the angle of the pressing handle can be adjusted through linkage matching of the supporting mechanism and the adjusting mechanism, and the clamping force can be adjusted. Therefore, the opening and closing width of the lower clamping plate and the upper clamping plate can be correspondingly adjusted according to different sizes of clamped objects.

The invention relates to the technical field of animal specimen manufacturing, in particular to animal specimen manufacturing equipment and method.The animal specimen manufacturing equipment comprises a water tank, a clamping structure, a gooseneck pipe, a fixing structure and a light supplementing structure.The bottom end of a first support is in threaded connection with a first threaded rod, the top of the first threaded rod is rotationally connected with a clamping plate, and the clamping plate is slidably connected with the first support; the top of the first support is fixedly connected with a gooseneck pipe, the top of the gooseneck pipe is fixedly connected with a fixing seat, the fixing seat is slidably connected with a fixing rod, the fixing seat is in threaded connection with a second threaded rod, the outer wall of the second threaded rod is fixedly connected with a first insertion rod, and the alligator clip and the supporting plate are fixedly connected with the fixing rod. According to the mouse fixing device, the clamping structure, the gooseneck pipe and the fixing structure are arranged, the positions of the alligator clip and the supporting plate can be freely adjusted, through cooperative use of the clamping structure, the gooseneck pipe and the fixing structure, a mouse can be conveniently fixed, the clamping position can be adjusted according to the size of the mouse, and operation is convenient and rapid.

The utility model discloses a discharging device, two sockets in the discharging device are embedded in a mounting piece at an interval, a discharging resistor is arranged in a mounting cavity of the mounting piece, the two ends of the discharging resistor are electrically connected with the sockets respectively, and conditions allowing current circulation exist between the sockets and the discharging resistor. The discharging device is provided with two cables, one end of each cable is a plug used for being inserted into a socket, and the other end is an alligator clip. During discharging, the two plugs are inserted into the two sockets in a one-to-one correspondence mode, the two alligator clips are connected to the two pins of the capacitor in a one-to-one correspondence mode to form a discharging loop, voltage is released through the discharging resistor, after releasing is completed, the plugs of the cable are pulled out of the sockets, and the alligator clips are separated from the capacitor. When discharging is not needed, the cable and the socket do not need to be connected, the cable is not prone to abrasion, the influence of cable abrasion on discharging safety can be reduced, the cable and the socket are separated, potential safety hazards caused by mistaken touch connection can be reduced, and the technical problem that the discharging device is not safe enough in use is solved to a certain extent.

The battery charging device with the charging protection mechanism comprises a machine body, a wire, an alligator clip and a positioning mechanism, the wire is electrically connected to the output end of the machine body, the alligator clip is electrically connected to the end, away from the machine body, of the wire, and the positioning mechanism is sleeved with a plurality of adjusting blocks in the middle of the wire in a central symmetry mode. A limiting assembly for limiting movement of the wire is arranged in the middle of the wire, and a positioning piece for fixing the position of the limiting assembly is arranged at the bottom of the limiting assembly. Through the design of the adjusting block, the limiting assembly and the positioning piece, when the alligator clip is clamped on an electrode of a battery, the limiting assembly is fixed on the adjusting block, the limiting assembly and a wire are fixed through the adjusting block, and then the limiting assembly is fixed at a required position through the positioning piece; movement of the wire is limited through the limiting assembly at the fixed position, and the situation that when the machine body is collided, the machine body pulls the wire and the alligator clip to move together is avoided.

The utility model discloses a grounding wire with a difficult-to-break grounding wire nose, and belongs to the technical field of electric power grounding wires. Comprising a grounding wire; the grounding wire is wound on the reel, one end of the grounding wire is elastically and telescopically arranged in the wire nose, and the other end of the grounding wire is elastically and telescopically arranged in the handle of the alligator clip; the length of the ground wire can be changed according to needs when the ground wire is used by winding the ground wire on the reel, and the two ends of the ground wire are arranged in the wire nose and the handle of the alligator clip in an elastic and telescopic mode respectively, so that when the ground wire is impacted, the end of the ground wire can be shrunk, and the ground wire is not damaged. When the ground wire is impacted, the reel can be driven to rotate, so that part of the ground wire is released, and disconnection between the ground wire and the wire nose and the alligator clip can also be prevented.

The invention discloses an electric power instrument testing device which comprises a testing instrument, a measuring head piece and a contact pin head, wherein the measuring head piece and the contact pin head are electrically connected with the measuring head end of the testing instrument. The measuring head piece comprises an insulating sleeve head, a clamping part and a shaft rod which is rotatably mounted on the inner side of the insulating sleeve head, a static chuck and a movable chuck are arranged in the clamping part, through a thread and a spiral groove structure on the surface of the shaft rod, rapid adjustment of the clamping distance is realized under driving of an external shifting ring, and the measuring head piece is used for stably and rigidly clamping structures such as cable ends, tabs or copper bars. The contact head is electrically connected with the measuring head piece, and the surface of the contact head is provided with a gap clamping groove, a wire clamping hole and a meshing groove, so that elastic clamping or hanging of a contact, a wire and a needle-shaped electrode can be realized. Through the combined arrangement of the elastic contact pin and the adjustable rigid clamping structure, the test contact pin can adapt to test contacts of various shapes and specifications, the problems that a traditional contact pin is difficult to maintain and an alligator clip is easy to fall off are avoided, the stability and operation convenience of test connection are improved, and the test contact pin is suitable for complex power test working conditions.

The application discloses a method for growing nano metal-oxide structure catalyst on a substrate (foamed nickel, nickel felt, foamed copper, foamed stainless steel, nickel mesh, stainless steel mesh, titanium fiber felt, stainless steel fiber felt, etc.) by using Joule heat method, and belongs to the field of material science and engineering technology and chemistry. The metal involved in growing the nano metal-oxide structure catalyst on the substrate includes Pt, Ir, Ru, Cu and Ag, and the oxide involved includes NiO, CoO, Fe2O3 and MnO. Firstly, a metal precursor dispersion solution A with a certain concentration is configured; after being uniformly dispersed, the A is uniformly sprayed on the surface of the substrate (or the substrate is soaked in the uniformly dispersed precursor solution A for a certain time), and the step is recorded as 1; the substrate B after spraying is connected with the positive and negative poles of a direct current power supply through pure copper wires with alligator clips at both ends, a certain power is output, and the process is continued for a certain time, and the step is recorded as 2; after repeating steps 1 and 2 for a certain number of times, the product is obtained through washing and drying. The method has the advantages of simple operation, high efficiency and reliability, wide application range, large-scale preparation, uniform and stable structure and the like.

The utility model discloses an electric energy quality analyzer easy to wire, which belongs to the technical field of electric power test equipment, and comprises an analyzer body, an alligator clip, a current clamp and a Rogowski coil, a plurality of sockets are arranged on one side of the analyzer body, a wiring assembly is arranged at the sockets, a plurality of groups of voltage test wires are arranged in the wiring assembly, and the voltage test wires are connected with the current clamp. A mounting groove is formed in the bottom of the analyzer body, and a magnet and a storage assembly are arranged in the mounting groove. According to the utility model, the wiring assembly and the voltage test wires are arranged, so that multiple groups of voltage test wires, the jacks and the storage assembly can be carried at the same time, the effect of convenient wire insertion and storage is realized, and when the voltage test wires are damaged, the corresponding voltage test wires can be dismounted and replaced; the alligator clip and the current clamp are fixed through the clamping part storage box, and the Rogowski coil is fixed through the coil storage box, so that disordered movement of the alligator clip, the current clamp and the Rogowski coil during carrying is avoided, and mutual winding of voltage test wires is avoided.

The utility model relates to the technical field of pipeline operation, and discloses a traction clamp for PCCP (prestressed concrete cylinder pipe) pressure tapping operation, which is used in the process of welding a reinforcing plate to a prestressed steel wire at an opening of a PCCP and comprises a threaded cylinder, a threaded rod, a steel wire rope and an alligator clip. The PCCP comprises a concrete layer, a steel cylinder layer, a prestressed steel wire layer and a mortar protection layer which are sequentially distributed from inside to outside. Before construction, the mortar protection layer in the construction area is polished away, and the prestressed steel wires can be exposed out of the opening. During construction, after the reinforcing plate is temporarily bound on the surface of the exposed prestressed steel wire, the two alligator clips can respectively clamp two point positions of the prestressed steel wire outside the edges of the two sides of the reinforcing plate. And then the threaded cylinder is rotated, and the extension length of the two threaded rods can be changed through the interaction between threads, so that the two steel wire ropes are tightened. Traction force can be applied to the prestressed steel wire in advance, pipe explosion accidents caused by stress relaxation of the prestressed steel wire in follow-up welding or drilling operation are avoided, and the technical problem of under-pressure trepanning repair is solved.

An alligator clip has a clamping module and an insulating module. The clamping module has two clamping elements, an engaging portion, and an elastic element. The engaging structure is disposed between the two clamping elements to connect the two clamping elements with each other and has an engaging portion and a holding portion. The engaging portion is disposed on one of the two clamping elements and has a free end. The holding portion is disposed on the other one of the two clamping elements and engages with the free end of the engaging portion. The elastic element is disposed between the two clamping elements, abuts against the two clamping elements, and is disposed adjacent to the engaging structure. The insulating module is connected to the clamping module and has two outer covers respectively connected to the two clamping elements.

The utility model discloses a special series connection device for a withstand voltage test, which belongs to the technical field of the special series connection device for the withstand voltage test, and comprises a power cable main body and ten alligator clips, the five insulated wire cores are respectively a yellow insulated wire core, a green insulated wire core, a red insulated wire core, a blue insulated wire core and a black insulated wire core, and insulators and conductors are stripped from two ends of the five insulated wire cores and are fixedly connected with the ten alligator clips respectively. According to the utility model, through the arrangement of the power cable main body and the ten alligator clips which are produced by a special process, multiple coils of cables can be connected in series through the series connection device for a withstand voltage test, the test time is shortened, the labor intensity is reduced, the detection efficiency is improved on the premise that the product quality is not influenced, and the series connection device is convenient to use and disassemble, firm in series connection and not easy to fall off; and the serial connection device can be repeatedly used, and is convenient to use and easy to store.

The utility model discloses an automobile battery detector, and relates to the technical field of battery detection, the automobile battery detector comprises a detector main body and an insulation alligator clip, the bottom of the detector main body is connected with a handle, the outer ring of the handle is provided with a winding groove, the back of the detector main body is connected with a support, and the two sides of the bottom of the support are connected with elastic clips; through holes are formed in the two sides of the support. Through the arrangement of the limiting ring, the magnetic suction plate, the winding groove and the elastic clip, when the cable is not used, the cable can be wound on the outer ring of the winding groove, then the cable is inserted into the elastic clip, and then the limiting ring is sucked through the magnetic suction plate to limit the insulation alligator clip, so that the cable and the insulation alligator clip are prevented from shaking randomly in the carrying process; the magnetic suction plate can be adsorbed on iron and steel structures such as a vehicle engine cover and a frame during use, and a worker does not need to hold the magnetic suction plate all the time in the detection process, so that the worker can carry out other operations by free hands; the carrying and the use are convenient.

This utility model relates to a DC regulated power supply, comprising: a power supply body, a fixing frame, and a partition block; the fixing frame is disposed on the upper surface of the power supply body, and a partition block is snapped into it, the partition block being used to divide the fixing frame. This utility model, by setting up the power supply body, hollow frame, and insulating partition, allows alligator clips to be directly clamped onto the outside of an insulating horizontal plate through the cooperation between the insulating partition and the hollow frame. Furthermore, the insulating partition separates multiple alligator clips, thus preventing electric shock or short circuits when the alligator clips are placed on a workbench. The insulating partition facilitates installation inside the hollow frame. Through the cooperation between the snap-fit ​​plate and the snap-fit ​​protrusion, the snap-fit ​​plate elastically deforms and returns to its original shape during the insertion of the horizontal plate into the snap-fit ​​interface, achieving the effect of easy disassembly and installation of the insulating partition.

The invention discloses a solid-sealed polar pole testing device, which belongs to the field of testing equipment, and comprises a rack, the rack is provided with a fixing mechanism used for installing a solid-sealed polar pole, a first connecting structure used for abutting against a connector at the end part of the solid-sealed polar pole, a second connecting mechanism used for abutting against a convex tube on the side surface of the solid-sealed polar pole, a power device, a tester and a controller, the first connecting structure comprises a first test rod and a first elastic piece for supporting the first test rod, the second connecting structure comprises a second test rod and a first elastic piece for supporting the second test rod, and when the solid-sealed polar pole is mounted on the fixing mechanism, the connector generates pressure on the first test rod to compress the first elastic piece, so that the connector is propped against the first test rod; the convex tube generates pressure on the second test rod to compress the second elastic piece, so that the convex tube is abutted against the second test rod, the steps of manually mounting a copper rod at the convex tube and respectively clamping an alligator clip at the copper rod and the joint are omitted, the unnecessary labor cost is optimized, and the efficiency of the test process is improved.

The utility model belongs to the technical field of geophysical exploration, and provides an electrode device for electrical sounding exploration, which comprises an electrode bar, an automatic telescopic pipe coiling device body, a graduated wire and a test wire, a connecting ring is arranged on the side wall of the electrode bar close to the top, and the connecting ring is connected with the automatic telescopic pipe coiling device body. One end of the graduated wire is connected with the automatic telescopic pipe coiling device body, the other end of the graduated wire is fixedly connected with the first alligator clip, the graduated wire is connected with the connecting ring on the electrode bar through the first alligator clip, one end of the test wire is connected with the automatic telescopic pipe coiling device body, and the other end of the test wire is connected with the second alligator clip. The test wire is connected with the test host through the second alligator clip. The electrode device for electrical sounding exploration provided by the utility model is simple in structure and convenient to operate, reduces the repeated work of laying a measuring tape and a conductive wire, and improves the working efficiency.

The utility model provides a detection tool for insulating voltage resistance detector, include: box body, two clamping components and two electric post, be equipped with two interval distribution's conducting strip in the box body, two clamping components all install in the box body, and two clamping components are located two conducting strips just above respectively, two clamping components can respectively move to the direction close to two conducting strips, two electric posts are connected with two conducting strips electricity respectively, and two alligator clips of voltage resistance tester are clamped on two electric posts respectively, can cooperate with voltage resistance tester and test out the insulation performance of wire harness fast.

The utility model discloses a metal oxide semiconductor (MOS) ignition circuit adopting isolation driving, which comprises a printed circuit board assembly (PCBA), and at least two alligator clips used for being connected with an automobile and a power supply capacitor are connected onto the PCBA. Wherein the PCBA board comprises an MCU, a power loop circuit and an auxiliary isolation power supply, the power loop circuit is connected with the auxiliary isolation power supply, the power loop circuit and the auxiliary isolation power supply are respectively connected with the MCU, and a plurality of MOS tubes are arranged in the power loop circuit. According to the MOS ignition circuit provided by the utility model, the power loop circuit and the auxiliary isolation power supply are arranged, the auxiliary isolation power supply is used for supplying power to the power loop circuit, and the ignition circuit adopts a plurality of MOS tubes as a power supply capacitor energy output switch of an automobile emergency starting power supply, so that the MOS ignition circuit has the characteristics of high speed and long repeated service life.

The utility model belongs to the technical field of medical auxiliary instrument, provide a kind of TAVR in operation guide wire pacing with adapter, including the anode adapter terminal and body surface electrode patch of electric connection, and the cathode adapter terminal and guide wire crocodile clip of electric connection;Anode adapter terminal is provided with anode pin, cathode adapter terminal is provided with cathode pin, to be connected with temporary pacemaker by anode pin and cathode pin, to be connected with pacing guide wire system by body surface electrode patch and guide wire crocodile clip.The TAVR in operation guide wire pacing with adapter provided by the utility model solves the problem that there is currently lack of adapter specially used for connecting guide wire and temporary cardiac pacemaker, reduces the complexity and complexity of guide wire connection in guide wire pacing process, improves operation convenience, simultaneously avoids the problem that the conductive connection end is exposed caused by using long needle or needle head connection crocodile clip, to avoid short-circuit phenomenon, improve the stability and security of connection.

To provide a farad supercapacitor starting power supply with a battery charging function, which realizes the dual functions of emergency starting and battery charging, and when the starting power supply is insufficient to start a vehicle urgently in an extreme usage scenario, the battery can be charged by connecting to a mobile power bank, and the vehicle can be started after the battery recovers a certain amount of power. [Solution] The farad supercapacitor starting power supply with battery charging function comprises a starting power supply housing, a farad supercapacitor pack arranged in the starting power supply housing, a main control circuit board, and an alligator clip output interface. The main control circuit board further comprises a USB-C charging port, a switching circuit, and an MCU control circuit. When the USB-C charging port is connected to an external charging source and the alligator clip output interface is connected to a vehicle battery that is short of power, the main control circuit board controls the switching circuit to guide the charging current from the external charging source to the vehicle battery to charge the vehicle battery.

This item is a digital multimeter that measures current, voltage, resistance, etc., and also functions as an oscilloscope that displays sound and voltage waveforms. The back of the item has a recess as shown in the rear view and end view, and as shown in the reference drawing, cables with alligator clips attached to both ends of the item can be stored and secured there.

The utility model relates to a battery performance testing device and a clamp tool for testing. The clamp tool comprises an alligator clip and a lead, the alligator clip comprises an upper clip and a lower clip, and the upper clip and the lower clip are connected with each other through a hinge shaft; the middle portions of the opposite faces of the head portions of the upper clamp and the lower clamp are arranged to be clamping planes, the tail portion of the lower clamp extends outwards to form a hollow connecting column, a through hole is formed in the connecting column, and a telescopic positioning column is installed at the position of the through hole. One end of the wire is welded with a connecting cylinder with one open end, the inner diameter of the connecting cylinder is in small clearance fit with the outer diameter of the connecting column, and the outer wall of the connecting cylinder is provided with a positioning hole matched with the positioning column. According to the utility model, more time and labor can be saved in the frequent dismounting and mounting process, the problem of terminal burnout caused by overlarge local current can be prevented in the large-current discharge test process, and the test process is safer and more effective.

The utility model discloses a bolt-type filter high-voltage test tool clamp which comprises a first clamping block and a second clamping block which are telescopically connected through a telescopic piece, the first clamping block and the second clamping block are matched to form a clamping groove, and a bolt-type filter is clamped in the clamping groove; the outer side end of the first clamping block and the outer side end of the second clamping block are respectively provided with an elastic buckle part, and the number and spacing of the elastic buckle parts are matched with those of bolt type terminals of the bolt type filter. The elastic buckling parts lead out terminals outwards, and the bolt type terminals are pressed in the corresponding elastic buckling parts. The device is simple in structure and convenient to operate, can meet the clamping requirements of bolt-type filters of different sizes, thoroughly changes the situation that a traditional alligator clip is easy to fall off, effectively avoids connection interruption, and greatly shortens the test period; and meanwhile, the appearance damage to the bolt type terminal is avoided, the potential safety hazard caused by poor connection is reduced, and the safety of operators is guaranteed.