980results about "Protective switch details" patented technology

The invention relates to the technical field of high-voltage switch equipment, and discloses a primary and secondary fusion pole-mounted circuit breaker which comprises a base, a front plate is arranged on the front side of the base, the base and the front plate are connected through a connecting plate, a first solid-sealed polar pole is arranged on the top of the base, and a second solid-sealed polar pole is arranged on the top of the front plate. A high-voltage input plate is arranged at the top of the solid-sealed polar pole I, a high-voltage output plate is arranged on one side wall of the solid-sealed polar pole I, the connecting frame is fixedly connected between the solid-sealed polar poles I, the bird repelling mechanism is arranged at the top of the connecting frame and used for repelling birds to prevent the birds from stopping, and the shielding mechanism is arranged at the top of the solid-sealed polar pole I. By means of the bird repelling mechanism, the all-weather and intelligent active bird repelling function is achieved, stable equipment operation is guaranteed, a dual-drive mode combining wind power and solar power is adopted, it is guaranteed that the bird repelling function is uninterrupted, pollution flashover or short circuit faults caused by bird activities to high-voltage insulation parts are effectively avoided, and the equipment operation reliability is improved.

The invention relates to a disconnector with a volume compensation function. The disconnector comprises a mounting shell, and the tail of the mounting shell is in sealed connection with a liquid cooling module; a floating shell is arranged in the mounting shell, a valve element assembly is further arranged in the floating shell, when the disconnector is in a disconnected state, the valve element assembly and the floating shell are matched and sealed to enable a flow channel in the floating shell to be closed, and when the disconnector is connected with an adaptive disconnector, the valve element assembly and the floating shell are unsealed to enable the flow channel in the floating shell to be opened; a first elastic piece enabling the floating shell to move backwards in the axial direction is further arranged in the installation shell, and a stopping structure is further arranged in the installation shell and matched with a limiting part on the floating shell to prevent the floating shell from being disengaged from the tail of the installation shell. And the floating shell is always kept in radial sealing with the mounting shell in the moving stroke of the floating shell. According to the disconnector, when an internal fluid medium reaches a certain threshold value, the internal structure is stressed to axially move forwards, so that the fluid containing space in the mounting shell is enlarged, and the fluid pressure is reduced.

The invention relates to the technical field of pole-mounted circuit breakers, and discloses a primary and secondary fusion pole-mounted circuit breaker, which comprises a circuit breaker and a mounting bracket, a mounting plate is arranged on the mounting bracket, a mounting hole is formed in the mounting plate, an adjusting plate is rotatably connected in the mounting hole, a gradienter is arranged on the adjusting plate, and the gradienter is arranged on the mounting plate. A fixing structure used for fixing the adjusting plate is arranged on the installing plate, the circuit breaker is installed on the adjusting plate, a worker firstly installs the installing support on a wire column, then the adjusting plate is rotated, the adjusting plate is determined to be in a horizontal state through the gradienter, and finally the worker installs the circuit breaker on the adjusting plate through the fixing structure. And the adjusting plate can stably realize the installation of the circuit breaker.

The utility model discloses a device for preventing a buckle from being pulled out by mistake. The device comprises a shell which can be inserted into or pulled out of a case, and a panel, a handle and a buckle which are arranged in the shell, wherein a clamping groove penetrating through the inside and the outside of the shell is formed in the side wall of the shell; the panel is close to the clamping groove and is arranged in the shell; the handle is arranged on the panel in a sliding manner; the buckle is installed in the shell in a sliding mode in the direction of the clamping groove, and the included angle between the face, back to the case, of the buckle and the outer side face, facing the buckle, of the shell is smaller than or equal to 90 degrees. When the handle slides into the shell, the buckle can extend out of the shell from the clamping groove under the action of external force; when the handle slides out of the shell, the buckle can be driven by the handle to retract into the shell. According to the utility model, when the circuit breaker is inserted into the cabinet and is switched on, the buckle extends out of the shell and is clamped in the preset groove of the cabinet, so that the circuit breaker cannot be pulled out of the cabinet in a switched-on state, the risk of electric shock of an operator in the process of switching on and switching off the cabinet is effectively avoided, and the safety of the circuit breaker is improved.

An electric circuit breaker device includes a housing, an igniter, a projectile, and a conductor piece including, between a first connection end portion and a second connection end portion, a cutoff portion to be cut by movement of the projectile, in which a boundary portion with the cutoff portion from which the cutoff portion is cut in the first connection end portion of the conductor piece held in the housing is defined as a first cutting edge portion, and a boundary portion with the cutoff portion from which the cutoff portion is cut in the second connection end portion is defined as a second cutting edge portion, and a groove is formed at a position corresponding to the conductor piece crossing an accommodating space and in a predetermined inter-edge inner wall region positioned between the first cutting edge portion and the second cutting edge portion, in an inner wall surface of the housing.

The invention relates to the technical field of circuit breaker assembling and manufacturing, in particular to a primary and secondary fusion pole-mounted circuit breaker and assembling equipment thereof.The pole-mounted circuit breaker comprises a main body, the main body is composed of a mechanism box and an arc extinguish chamber, the arc extinguish chamber is movably connected to the top of the mechanism box in an inserted mode, and assembling is conducted in an inserted installation mode; the assembling equipment comprises a rack, a material frame and a conveying frame for installing a conveying belt, a clamping mechanism and a deviation rectifying mechanism are installed on the two sides of the conveying frame correspondingly, a reciprocating driving mechanism is arranged between the material frame and the conveying frame, and a clamping mechanism used for positioning the mechanism box is arranged on the outer side of the conveying frame; the outer side of the conveying frame is further provided with a jacking mechanism used for pulling the pull column outwards, steering of the clamped arc extinguish chamber is automatically completed through the reciprocating driving mechanism, and the reciprocating driving mechanism is matched with the clamping mechanism and the deviation rectifying mechanism to complete automatic clamping of the arc extinguish chamber to be installed and installation direction correction.

The invention provides a circuit breaker and power equipment. The circuit breaker comprises a shell, an operating handle, an operating mechanism, a through-flow assembly, an arc extinguishing chamber and an arc extinguishing module. And the operating handle, the operating mechanism, the through-flow assembly, the arc extinguishing chamber and the arc extinguishing module are sequentially arranged along the depth direction of the circuit breaker. The through-flow assembly comprises a moving contact assembly and a static contact. The operating mechanism is connected with the moving contact assembly. The operating handle is used for controlling the operating mechanism to drive the gas production connecting rod of the moving contact assembly to rotate, so that the moving contact is in contact with or separated from the static contact. The arc extinguish chamber is used for eliminating electric arcs generated when the moving contact is separated from the static contact. The arc extinguishing module is used for purifying gas sprayed out of the arc extinguishing chamber. All the mechanisms of the circuit breaker are arranged in the depth direction of the circuit breaker, the size in the height direction is small, and the number of circuit breakers capable of being arranged in a cabinet is increased. And when the moving contact is separated from the static contact, the gas production connecting rod is used for forming gas blowing, so that the arc passes through the arc extinguishing chamber along the depth direction to realize arc extinguishing, and the safety of the circuit breaker is improved.

The utility model relates to the technical field of circuit breakers, and discloses a circuit breaker molded case which comprises a base and a cover body covering the base, the end face, facing the cover body, of the base is provided with a containing groove, a switch used for controlling closing and opening of a circuit breaker is installed in the containing groove, and the cover body is provided with a through hole allowing the switch to penetrate through. Two mounting plates are arranged on the side, away from the base, of the cover body, the through hole is located between the two mounting plates, a protective cover for covering the switch is rotationally connected between the two mounting plates, and the mounting plates and the protective cover are provided with locking structures for connecting the mounting plates and the protective cover.

Multi-pole or multi-phase electrical wiring devices that incorporate clamp-type wire termination assemblies are described. The electrical wiring devices include multi-pole motor switches. The electrical wiring devices include a plurality of wire termination assemblies. Each wire termination assembly includes a wire terminal and an activating member.

The present application provides a circuit breaker and an electrical device. The circuit breaker comprises a housing, and an operating handle, an operating mechanism, a current-conducting assembly, and an arc extinguishing chamber which are sequentially provided in the housing along the depth direction of the circuit breaker. The operating mechanism comprises two mounting plates, a latch assembly, and at least one operating assembly. The operating assembly comprises a trip lever, an upper connecting rod, a lower connecting rod, and springs. Along the height direction of the circuit breaker, the latch assembly is located on one side of the rotating center of the trip lever, and the upper connecting rod and the lower connecting rod are located on the other side of the rotating center. Each mounting plate is provided with a limiting rod which is used for limiting rotation of the trip lever and the upper connecting rod when the latch assembly unlocks the trip lever. The upper connecting rod is provided with a limiting rod which is used for limiting the rotation angle of the trip lever during switching-on / switching-off. The mechanisms of the circuit breaker are provided along the depth direction, resulting in a smaller dimension along the height direction. In addition, the operating mechanism has a simple structure and allows for locking and unlocking, thereby facilitating the miniaturization of the circuit breaker, and thus allowing for an increased number of circuit breakers to be arranged within a cabinet.

The utility model discloses a universal circuit breaker with a peripheral protection component, which comprises a circuit breaker main body and mounting page plates, the mounting page plates are arranged on two sides of the circuit breaker main body, and through holes are formed in the mounting page plates and are matched with bolts to be used for mounting the circuit breaker main body. According to the utility model, the fluted disc is sleeved at the outer side of the circuit breaker switch rotating rod, when the rotating handle and the circuit breaker switch rotating rod need to be rotated to control the opening and closing of the circuit breaker main body, the guide rod is rotated firstly to enable the rotating disc, the connecting rod, the connecting shaft and the impact block to rotate, and the impact block is rotated to abut against the locking clamping plate at the right side to turn over, so that the fluted disc rotates reversely; according to the utility model, the two groups of locking clamping plates are used for clamping the fluted disc under the pushing action of the reset spring, so that the position locking of the circuit breaker switch rotating rod can be realized, and the condition of mistaken touch is prevented from happening. The circuit breaker switch rotating rod is enabled to rotate reversely to realize the closing of the circuit breaker main body, otherwise, the fluted disc is clamped by using the two groups of locking clamping plates to realize the locking of the position of the circuit breaker switch rotating rod.

The invention discloses a primary and secondary depth fusion protection type pole-mounted circuit breaker, which comprises a primary and secondary depth fusion pole-mounted circuit breaker body, and further comprises a circuit breaker base fixed at the bottom end of the primary and secondary depth fusion pole-mounted circuit breaker body; the sealing bin wraps the periphery of the circuit breaker base, and the joint of the sealing bin and the primary and secondary depth fusion pole-mounted circuit breaker body is arranged in a sealed mode; the bottom frame is fixedly installed on the inner wall of the bottom end of the sealing bin, and the circuit breaker base is fixedly installed at the top end of the bottom frame; the dehumidification mechanism is connected with the sealing bin; the air inlet adjusting mechanism is connected with the dehumidification mechanism; the dehumidification mechanism comprises an air outlet which is formed in the inner wall of the top end of the sealing bin in a penetrating mode, and the air outlet is movably covered with a filter screen; the multiple air inlets penetrate through the inner wall of the bottom end of the sealing bin at the same time; the primary and secondary deep fusion protection type pole-mounted circuit breaker disclosed by the invention has the effects that auxiliary heat dissipation is realized, and meanwhile, moisture can be prevented from directly invading connecting parts of key components.

The invention relates to the technical field of circuit breakers, and discloses a circuit breaker with a clapping type tripping assembly, which comprises a shell, an inner cavity of the shell is rotatably connected with an operating rod, a gas generation assembly is fixedly mounted at the bottom end of the inner cavity of the shell, and driving assemblies are arranged at the front end and the rear end of the operating rod. And a blowing assembly is fixedly mounted on the left side of the gas generation assembly. The gas box is arranged in the shell, when a circuit fault occurs, the operation rod rotates to drive the gear ring to rotate, then the first rack, the extension rod and the lifting plate are driven to move downwards, gas in the gas box is squeezed into the one-way gas outlet pipe, the gas is sprayed out upwards through the spray head, an arc is pushed by gas flow to quickly pass through the arc chute, and the arc extinguishing effect is achieved. And the arc extinguishing speed is improved.

An electrical insulation structure of a molded case circuit breaker comprises a connecting rod assembly (1), the connecting rod assembly (1) can drive a rotating shaft (3) to rotate under the driving of an operating handle assembly (2), a moving contact (4) is arranged on the rotating shaft (3), and the electrical insulation structure is characterized in that the surface of the moving contact (4) is coated with an insulating part (5) for increasing the creepage distance between the moving contact (4) and a metal part of the connecting rod assembly (1) of the circuit breaker. According to the electrical insulation structure, the creepage distance between the moving contact of the conductive piece and the metal piece of the lower connecting rod of the mechanism piece is increased through the installation of the upper insulating piece and the lower insulating piece on the moving contact, so that the safety performance of the circuit breaker is improved.

Provided is an energy storage system, including: an energy storage cabinet, a high-voltage box and power conversion systems that are located in the energy storage cabinet, the power conversion systems are electrically connected to the high-voltage box. The high-voltage box includes a box body with accommodating cavity, circuit breakers electrically connected to electronic components through connecting members, and a first mounting bracket for installing the circuit breakers. The first mounting bracket includes first and second main body portions connected to each other. The first main body portion is installed within the accommodating cavity. Along height direction of the high-voltage box, the circuit breakers are sequentially installed to the second main body portion. The electronic components are located on a side of the second main body portion away from the circuit breakers. The high-voltage box further includes support members connected to the connecting members and the first mounting bracket.

Switching device comprising at least one mechanical switch and / or semiconductor switch, at least one device for measuring the current flowing through the switching device and at least one first device for measuring the voltage, wherein at least one second device for measuring the voltage is provided and the first device for measuring the voltage, the at least one mechanical switch and / or semiconductor switch and the at least one second device for measuring the voltage are connected in series.

A fuse that includes a bus bar and cuts off the bus bar in response to an ignition signal, a first current detector that includes a first resistor and detects a current flowing through the bus bar, and a second current detector that includes a second resistor and detects the current flowing through the bus bar are included, wherein the first resistor and the second resistor are integrated with the bus bar, and a current having the same magnitude as the current flowing through the bus bar flows in the first resistor and the second resistor, and the bus bar is cut off between the first current detector and the second current detector in response to the ignition signal, or the first resistor of the first current detector is cut off in response to the ignition signal.

A circuit breaker protecting an electric low-voltage circuit includes a housing with grid-side and load-side connections and a series circuit of a mechanical isolating contact unit on the grid side and an electronic interruption unit on the load side. The mechanical isolating contact unit has a handle opening and closing contacts. A current sensor unit is disposed in a conductor between the isolating contact unit and the interruption unit, for ascertaining a current level of the low-voltage circuit. A control unit is connected to the current sensor unit, electronic interruption unit, and mechanical isolating contact unit. When current and / or current / time thresholds are exceeded, prevention of a current flow in the low-voltage circuit is initiated. A power supply unit supplying energy to the circuit breaker is connected to conductors of the low-voltage circuit between the isolating contact unit and the interruption unit.

The utility model discloses a self-powered 24kv pole-mounted circuit breaker, which comprises a base, a second circuit breaker is fixedly mounted in the middle of the surface of the base, a first circuit breaker is fixedly mounted on one side of the second circuit breaker, and a third circuit breaker is fixedly mounted on the other side of the second circuit breaker. The front portions of the first circuit breaker, the second circuit breaker and the third circuit breaker are covered with a front protective net, and the rear portions of the first circuit breaker, the second circuit breaker and the third circuit breaker are covered with a rear protective net. According to the self-powered 24kv pole-mounted circuit breaker, the protective screen frame is integrally arranged in a plastic grid shape, is non-conductive, covers the outer side surfaces of the first circuit breaker, the second circuit breaker and the third circuit breaker, can protect the first circuit breaker, the second circuit breaker and the third circuit breaker, and can prevent wild animals or domestic pets from being in contact with the pole-mounted circuit breaker, so that the safety of the pole-mounted circuit breaker is improved, and the service life of the pole-mounted circuit breaker is prolonged. And electrical accidents such as short circuit and tripping caused by animal touch are avoided.

The utility model discloses a residual current operated circuit breaker, which comprises a circuit breaker shell and a rotating shaft, and the rotating shaft is rotatably connected with the circuit breaker shell. At least one mounting groove is formed in the rotating shaft, a moving contact and a contact torsion spring are arranged in each mounting groove, and one end of each contact torsion spring abuts against the corresponding moving contact; wherein the mounting groove is provided with an abutting wall and two side walls, and the two side walls are arranged on the two sides of the abutting wall respectively; abutting structures are arranged on the two side walls, and each abutting structure is provided with a first gear and a second gear; the other end of the contact torsion spring abuts against one of the abutting wall, the first gear and the second gear. The deformation quantity of the contact torsion spring when the contact torsion spring abuts against the abutting wall is smaller than the deformation quantity of the contact torsion spring when the contact torsion spring abuts against the first gear, and the deformation quantity of the contact torsion spring when the contact torsion spring abuts against the first gear is smaller than the deformation quantity of the contact torsion spring when the contact torsion spring abuts against the second gear. The pressure adjusting device has the advantage of being adjustable in pressure.

The utility model discloses an outdoor electric vehicle charging station integrated security and protection system, which comprises a cabinet body, a fire alarm device, a monitoring device, a lighting device, a drainage device and a barrier gate, a switch, a router and a wire bank are arranged in the cabinet body through a mounting rack, one end of the wire bank is electrically connected with an external power supply, and the other end of the wire bank is electrically connected with a power supply. The other end of the wire row supplies power to a switch, a router, a fire alarm device, a monitoring device, a lighting device, a drainage device and a barrier gate; the switch and the router are connected and then are communicated with the fire alarm device, the monitoring device, a local display and a machine room network switch which are arranged outside the cabinet body through network cables; through integration of the fire alarm device, the monitoring device, the lighting device, the drainage device and barrier gate control, management is facilitated, fire and water level monitoring is added on the basis of an existing security and protection system, hidden dangers can be found in time, monitoring information is sent to a background terminal and a local display through a network cable, and personnel can watch the monitoring information conveniently.

A circuit breaker is configured to ensure electrical safety when working on its circuits. The circuit breaker comprises a housing with an exterior boundary. The housing includes an “integrated” Lock-Off feature. It is integrated to one or more housing components of the circuit breaker not as a separate component to achieve most simplicity and least space used as compared to an “add-on” accessory based Lock-Off feature. The “integrated” Lock-Off feature has a feature that is configured to receive a shackle or a shank of a padlock. The circuit breaker further comprises a built-in Lock-Off mechanism including a handle that is configured to move relative to the feature. The built-in Lock-Off mechanism in combination with the Lock-Off feature is configured to prevent handle from being turned ON with the use of padlock. The padlock prevents circuit breaker from turning ON by impeding the handle from moving to an ON-position.

The utility model provides a low-voltage frame circuit breaker, and relates to the technical field of circuit elements, the low-voltage frame circuit breaker comprises a frame, a circuit breaker, a mounting assembly and a cooling assembly, the circuit breaker is arranged in the frame, and the mounting assembly used for conveniently mounting and dismounting the circuit breaker is arranged on the outer side of the circuit breaker. And a cooling assembly for absorbing heat and cooling is arranged above the mounting assembly. Installation and fixation can be facilitated, the installation efficiency is improved, meanwhile, automatic heat absorption and cooling can be achieved, and the service life is prolonged.

The utility model discloses an electrical primary circuit breaker heat dissipation device, which comprises an installation box, a circuit breaker body is fixedly installed in the inner cavity of the installation box, the left end of the front surface of the installation box is movably connected with a protective door through a hinge, and the left side of the protective door is fixedly connected with a fixed cover. According to the utility model, through the arrangement of the mounting box and the protective door, the circuit breaker body can be contained and protected, external air can be driven to be quickly blown to the surface of the circuit breaker body under the working action of the heat dissipation fan, so that the heat dissipation effect of the circuit breaker body is achieved, and meanwhile, through the arrangement of the dust filter screen, the heat dissipation efficiency is improved. According to the circuit breaker, dust in the air can be effectively filtered in the flowing path of the air conveyed by the heat dissipation fan, the situation that a large amount of dust is stacked and attached to the surface of the circuit breaker body in the long-time operation process and consequently subsequent heat dissipation is affected is effectively avoided, and therefore it is guaranteed that the circuit breaker body can stably operate.

The arc extinguishing system comprises an arc extinguishing chamber matched with a contact system, the arc extinguishing chamber comprises two arc extinguishing cavities which are communicated with each other, each arc extinguishing cavity is internally provided with at least one grid plate group, the contact system comprises a moving contact assembly and a static contact assembly which are matched with each other, the two arc extinguishing cavities are arranged at an included angle, and the two arc extinguishing cavities are arranged at the included angle. The static contact assembly is arranged at the joint of the two arc extinguishing cavities, the static contact assembly comprises a static arc striking angle, the opening and closing track of the moving contact assembly and one end of the static arc striking angle correspond to an arc inlet of one arc extinguishing cavity, and the other end of the static arc striking angle extends to the other arc extinguishing cavity. And the grid plate groups in the two arc extinguishing cavities are joined at the joint of the two arc extinguishing cavities. According to the utility model, the two arc extinguishing cavities are arranged at the included angle, so that the arc extinguishing grid sheets are additionally arranged in the arc extinguishing chamber in different directions, the breaking performance of high voltage and large current can be considered, and when the arc extinguishing chamber is arranged in the circuit breaker, the arc extinguishing chamber can be enlarged as much as possible in a limited space.

The present disclosure relates to an integrated power panel. The system includes one or more busbars coupled to the AC line, branch relays each coupled to the busbars and a respective circuit breaker, and current sensors each corresponding to at least one respective branch relay of the plurality of branch relays. The system also includes an air interface disposed in front of the plurality of branch relays and including openings corresponding to the branch relays, allowing an electrical terminal of each branch relay to protrude forward through a respective opening. A circuit breaker engages with each respective branch relay on a null junction to create an array of branch circuit breakers. The combination of relays and circuit breakers allows each branch circuit to be controllable. The relay may include a current sensor, such as a shunt, for determining branch circuit current and controlling the relay. Control circuitry manages relay switch operation and monitors branch circuit operation.

The utility model relates to circuit breaker technical field especially, relates to a low arc plastic shell formula circuit breaker, solved the circuit breaker inconvenient installation and use on the electric appliance in prior art and the problem that the plastic shell is easy to damage in the dismounting process and leads to the unsafe use of circuit breaker. A low arc plastic shell formula circuit breaker, including the body, the surface of body is equipped with several insertion holes, one side of body is fixedly connected with three partition plates, the bottom of body is fixedly connected with bottom block, the inboard of bottom block and partition plate is fixedly connected, the bottom of bottom block is equipped with mounting block, the top of mounting block is equipped with several screw holes, the bottom of mounting block is equipped with mounting mechanism, the inside rotation is connected with screw rod in insertion hole, one end of screw rod is connected with adjacent screw hole threadedly. The utility model guarantees that the circuit breaker body is conveniently fixed on the electric appliance, and can also be safely used.

A contactor device is provided that includes a movable contact configured to selectively open / close an electrical circuit. The movable contact is coupled to the shaft, and the shaft is retained in the closed position by the latch. The movable member is biased away from the latch. During an event, a biasing force that biases the movable member away from the latch is overcome. The movable member disengages the latch from the shaft, allowing the shaft to move to the open position. In an example, a movable member is disposed over an opening of a housing of the contactor device.

The utility model discloses a breaker base easy to assemble, which comprises a base, a bottom plate, a connecting nut and a connecting bolt, base holes are arranged at four corners of the base, bottom plate holes are arranged at four corners of the bottom plate, the connecting nut is coaxially and fixedly arranged at one end of the base hole back to the bottom plate, and the connecting bolt is fixedly arranged at the other end of the base hole back to the bottom plate. The connecting bolts penetrate through the bottom plate holes, then penetrate through the base holes and are in threaded connection with the connecting nuts so that the bottom plate can be fixedly installed on the base. According to the circuit breaker base easy to assemble, through the mode that the connecting nuts are fixed on the base, when the base is in butt joint with the bottom plate, the bottom plate and the base can be effectively installed only through the mode that the connecting bolts penetrate through the bottom plate and the base and then are in threaded connection with the connecting nuts.

The utility model discloses an electrical switch unit for electrical equipment, which comprises a circuit breaker main body, the rear side of the circuit breaker main body is provided with an installation clamping groove, the lower end of the installation clamping groove is slidably provided with a fixed clamping plate, and the inner side of the lower end of the circuit breaker main body is rotatably provided with a fixed screw rod through a bearing. A fixing push plate is fixedly installed at the lower end of the fixing clamping plate, a fixing nut is fixedly installed on the inner side of the fixing push plate, the fixing nut is arranged on the outer side of a fixing screw in a screwing and sleeving mode through threads, and a rotary knob is arranged at the lower end of the fixing screw. Through the designed mounting clamping groove and the fixed clamping plate, during use, the fixed screw rod is rotated through the knob, and the fixed screw rod drives the fixed nut and the fixed push plate to move, so that the fixed push plate drives the fixed clamping plate to move to be matched with the mounting clamping groove to be clamped on the mounting frame; and through connection and pushing of the fixing screws and the fixing nuts, it is guaranteed that the fixing clamping plates are more stable during clamping installation.