1408results about "Switch power arrangements" patented technology

The contactor comprises an electromagnetic assembly, a static contact and a movable assembly, the movable assembly comprises a movable contact, a first elastic part and a driving part which are connected, and the first elastic part is configured to generate elastic force supporting the movable assembly; the driving component is configured to generate electromagnetic driving force through a magnetic field generated by the electromagnetic assembly, and the controller is configured to control a movable contact and a static contact of the movable assembly to be closed and respond to the fact that the sensor detects that the driving component generates displacement based on electric repulsive force generated by current flowing through the movable contact and the static contact. And controlling the electromagnetic assembly to adjust the generated magnetic field so as to reduce electromagnetic driving force which is generated by the driving part according to the generated magnetic field and is opposite to the electric repulsive force, so that the movable contact is not closed with the static contact again. According to the contactor disclosed by the invention, fusion welding of the movable contact and the static contact in the short circuit process can be prevented, so that the contactor fault is avoided, and the equipment reliability is improved.

The invention relates to the technical field of low-voltage electric appliances, in particular to a magnetic flux release, an isolating switch and a power supply system. The electromagnetic coil is installed on the support, and the ejector rod is inserted into the electromagnetic coil in a sliding mode. In the electromagnetic coil, at least two movable iron cores which are arranged at intervals in the axial direction are arranged on the ejector rod; when the electromagnetic coil is powered on, at least one movable iron core moves in the axial direction of the ejector rod and drives the ejector rod to move. According to the embodiment of the invention, at least two movable iron cores are arranged in the magnetic flux release, so that differentiated response can be realized for different faults.

The utility model relates to the technical field of energy storage equipment, and particularly discloses a dual-motor operation module, a fusion switch and an energy storage system, and the dual-motor operation module comprises an operation housing, and a main loop operation mechanism and a pre-charging loop operation mechanism which are disposed in the operation housing. A first opening and a second opening are formed in the operation shell, the first opening is provided with a first output piece linked with a main loop operation mechanism, and the second opening is provided with a second output piece linked with a pre-charging loop operation mechanism; and the main loop operating mechanism and the pre-charging loop operating mechanism can respectively drive the fusion switch to be switched on and switched off through the corresponding first output piece and the second output piece. The reliability of the fusion switch can be effectively improved through the main loop operation mechanism and the pre-charging loop operation mechanism, and stable control over the energy storage system is achieved.

The invention discloses an electrified railway anti-misoperation outdoor high-voltage combined electric appliance device, which comprises an anti-misoperation spring energy storage device, an isolating switch linkage mechanism and a circuit breaker linkage mechanism, and is characterized in that the anti-misoperation spring energy storage device consists of an energy storage shaft, an energy storage spring and an energy storage transmission connecting rod; the anti-misoperation spring energy storage device is further provided with an energy storage limiting mechanism for preventing the energy storage shaft from rotating mistakenly after the energy storage spring stores energy, and an opening and closing trigger mechanism for tripping the energy storage limiting mechanism. The integrated spring energy storage transmission device has a mechanical interlocking function and can prevent misoperation, the integrated switch structure ensures firmness and mechanical reliability, connecting wires among equipment during dispersed installation are eliminated, the occupied area is reduced by more than 40% compared with traditional discrete arrangement, centralized maintenance is convenient, and the integrated switch structure is simple in structure and convenient to operate. And the overhaul and maintenance work efficiency is improved.

The invention relates to the field of energy storage loop monitoring, and particularly discloses an innovative energy storage loop system for an operating mechanism of a medium-voltage switch cabinet, which realizes soft start and contactless control of an energy storage motor by introducing a dynamic motor control circuit. The multistage stroke detection device replaces a mechanical limit switch, provides real-time and continuous position monitoring for the energy storage mechanism, and thoroughly eliminates feedback lag and inaccuracy. The core energy storage state analysis unit can identify abnormal working conditions in the energy storage process in real time through intelligent acquisition, analysis and decision making of signals. Besides, the power supply unit provides a stable operation basis, and the bidirectional communication interface ensures information interaction between the system and the external environment, so that an intelligent energy storage ecological system with controllable closed loop, feedback of state and early warning of fault is jointly constructed, and the response speed and the operation stability of the medium-voltage switch cabinet operating mechanism are comprehensively improved.

The utility model provides an interlocking device for a grounding switch and a switch cabinet. The device comprises a program lock, a locking assembly and a limiting assembly. Through the design of the program lock, the locking assembly and the limiting assembly, when the program lock is in a closed state, the operation main shaft is in a closed state, the program lock shields the operation hole, and the first switch in the locking assembly outputs the first signal for locking the electric operation assembly, so that a user cannot manually control the operation main shaft through the operation hole; and the operation main shaft cannot be controlled by controlling the electric operation assembly, so that the misoperation of a user is effectively avoided. When the program lock is in an open state, a user can control the grounding switch to be switched off or switched on by controlling the limiting assembly to control electric operation or manual operation according to own needs, it is guaranteed that the electric operation is switched off during manual operation or the manual operation is limited during electric operation, misoperation is effectively avoided, and the user experience is improved. And personal and equipment safety can be guaranteed.

The present invention relates to an energy storage mechanism for a state-switching operation of an electrical control system. The energy storage mechanism comprises: a housing; an operation assembly, which comprises an energy storage element; an actuating member, which is connected to an electrical control system state-switching unit; a locking assembly; and an unlocking assembly. The energy storage element is connected to the operation assembly and the actuating member, and by means of changing the relative positions of the operation assembly and the actuating member, the energy storage element stores energy; the operation assembly can be connected to the actuating member by means of the locking assembly to be in a locked state; the operation assembly is then driven to move in an opposite direction, and drives the actuating member to move in the same direction, such that the actuating member drives the position state of the electrical control system state-switching unit to change; the unlocking assembly can release the locked state between the operation assembly and the actuating member after receiving a trigger signal; and the actuating member is driven by energy released from the energy storage element to move, such that the position state of the electrical control system state-switching unit is driven to change again. The present invention can complete free tripping and opening, and can realize free tripping.

The invention provides an automatic gear shifting device and method for a transformer tap switch. The gear shifting device comprises a rack and a lifting mechanism arranged in the middle of the rack, a rotating mechanism is arranged at the lifting end of the lifting mechanism, and a mechanical arm used for clamping the tap switch is arranged at the rotating end of the rotating mechanism; the side edge of the rack is also provided with a visual acquisition and analysis module which is used for acquiring gear image information of the tap switch, analyzing gear shifting execution information and transmitting the gear shifting execution information to the rotating mechanism; the rotating mechanism rotates the tap switch to a corresponding gear based on the gear shifting execution information; the operation risk of personnel can be reduced, the gear shifting efficiency is improved, and the power failure duration of the distribution transformer is effectively shortened.

The invention relates to the technical field of motor controllers, and discloses an active circuit breaker, a motor controller, an electric assembly and a vehicle, the active circuit breaker comprises a conducting strip assembly, the conducting strip assembly comprises a first conducting strip and a second conducting strip, and the first conducting strip and the second conducting strip are arranged at an interval in the width direction of the first conducting strip; and the detonating device is provided with a conductive pin, and the extension direction of the conductive pin is parallel to the thickness direction of the first conductive sheet. According to the active circuit breaker disclosed by the invention, the space in the thickness direction of the first conducting strip can be utilized for mounting the conducting pin, so that the space in the width and length directions of the first conducting strip can be more redundant, other structures of the motor controller are convenient to mount, and the internal space of the motor controller is optimized.

The invention relates to a rotary actuator (1) comprising: - a stator (10), - at least one stator coil (11) which is connected to the stator (10) in such a way that a force acting on the stator coil (11) is transferred to the stator (10); - an armature (20) rotatable about an axis of rotation (2) relative to the stator (10), - at least one armature coil (21) which is connected to the armature (20) in such a way that a force acting on the armature coil (21) is transferred to the armature (20); - Power lines (3) through which at least one stator coil (11) can be energized, - Cable (4) through which the at least one armature coil (21) can be energized, - a rotation angle limiting device (5) by which rotation of the armature relative to the stator is limited to a rotation angle range of 0 to 359 degrees.

The invention belongs to the technical field of industrial temperature controllers, and particularly relates to a full-automatic intelligent temperature controller, which comprises a wiring bottom box and an integrated top box, and is characterized in that the wiring bottom box comprises a bottom cover; the integrated top box comprises a top cover, and a temperature acquisition plate is mounted on the top cover; a movable wiring terminal and a fixed wiring terminal are installed in the bottom cover, and the movable wiring terminal and the fixed wiring terminal are respectively connected with the temperature acquisition board. When an electric appliance is short-circuited, the stepping motor drives the rotating disc and the sliding head to rotate, the insulating rod is separated from the moving contact, the moving contact is disconnected from the fixed contact under the action of the spring, then the electromagnet is reversely electrified, the electromagnet and the permanent magnet on the air cylinder repel each other, and the sliding head is separated from the rotating disc; when the temperature of the circuit drops, the stepping motor drives the turntable to rotate through the belt, and the sliding head is separated from the turntable, so that the temperature controller is in a disconnected state when the turntable rotates, and secondary damage of the electric appliance caused by automatic connection of the temperature controller after the temperature drops is avoided.

Provided in the present application are an electric switch and a power distribution system. The switch comprises an insulating housing and an internal element; the insulating housing comprises a first cavity and second cavities for accommodating a switch system; connection ends of the switch are arranged at two ends of the second cavities respectively; the first cavity and the multiple second cavities are arranged in a vertically stacked mode; the vertical axes or central axes of connection devices of the connection ends corresponding to different phases or poles are coaxial or non-coaxial; a moving contact is driven by a control mechanism to rotate or / and move.

An operating mechanism and a fusion switch relate to the low-voltage electrical field. The operating mechanism comprises a driving assembly, the driving assembly comprises a rotating shaft, a main loop driving gear and a pre-charging driving gear, and the main loop driving gear and the pre-charging driving gear are arranged on the rotating shaft in a penetrating mode. The main loop driving gear rotates by a first angle and drives the main loop energy storage part to rotate for energy storage, and the pre-charging driving gear rotates by a second angle and drives the pre-charging loop energy storage part to rotate for energy storage; when rotating to a preset position, the main loop energy storage part releases energy and drives the main loop switch body to be switched on; when rotating to a preset position, the pre-charging loop energy storage part releases energy and drives the pre-charging loop switch body to be switched on; the second angle is larger than the first angle, so that the pre-charging loop energy storage part rotates to a preset position before the main loop energy storage part. According to the operating mechanism, the radius ratio of the main loop driving gear to the pre-charging driving gear can be adjusted so as to be matched with the corresponding rotation angles of the main loop switch body and the pre-charging loop switch body during closing, and the flexibility of the overall layout is improved.

A switching device comprises a shell, a contact system and two electromagnetic systems, the contact system and the two electromagnetic systems are arranged in the shell, the two electromagnetic systems are oppositely arranged on the two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move. The upper armatures of the two groups of electromagnetic systems are connected through a linkage shaft, the contact system comprises a static contact and a moving contact 5 arranged on a contact support 4, the linkage shaft is connected with the contact support, and the two groups of electromagnetic systems respectively drive the contact support to move through the linkage shaft. The contact support drives the moving contact to be in contact with or separated from the static contact, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

The invention relates to the technical field of motor controllers, and discloses an active circuit breaker, a motor controller, an electric assembly and a vehicle, the active circuit breaker comprises a conducting strip assembly, the conducting strip assembly comprises a first conducting strip and a second conducting strip, and the first conducting strip and the second conducting strip are arranged at an interval in the width direction of the first conducting strip; the detonating device is arranged between the first conducting strip and the second conducting strip, the detonating device is provided with a conducting pin, the extending direction of the conducting pin is parallel to the thickness direction of the first conducting strip, the detonating device is provided with a first firing pin and a second firing pin, the first firing pin is used for impacting the first weak part, and the second firing pin is used for impacting the second weak part. According to the active circuit breaker disclosed by the invention, the space in the thickness direction of the first conducting strip can be utilized for mounting the conducting pin, so that the space in the width and length directions of the first conducting strip can be more redundant, other structures of the motor controller are convenient to mount, and the internal space of the motor controller is optimized.

The utility model provides a current-limiting tripping device and a fusion switch, and relates to the low-voltage electrical field. The current-limiting tripping device comprises an operating mechanism, the operating mechanism comprises an energy storage module and a tripping module, and when a pre-charging loop switch body and a main loop switch body of the fusion switch are switched on through manual or electric operation, the energy storage module can store energy and is locked with the tripping module; the tripping module is connected with the main loop switch body, the main loop switch body comprises a magnetic induction coil, the magnetic induction coil is electrically connected with the tripping module through the circuit board, and the magnetic induction coil is used for sampling current of a main loop of the fusion switch and driving the tripping module and the energy storage module to release limitation through the circuit board when the current of the main loop is larger than a preset value. The energy storage module releases energy so that the main loop switch body is tripped and opened. According to the current-limiting tripping device, tripping and opening can be rapidly carried out when large current appears in a main loop, the fusion switch is protected in time, and the reliability and the safety are improved.

The operating mechanism of the dual-power switch comprises a swing arm assembled in a rotating mode, two main electromagnetic driving mechanisms and an interlocking mechanism, the two main electromagnetic driving mechanisms are connected with the two ends of the swing arm through connecting rod assemblies, the interlocking mechanism comprises a tripping piece assembled in a rotating mode, and the tripping piece is connected with two locking assemblies. Each locking assembly is rotationally assembled and matched with one end of the swing arm, when the swing arm is located at the first connection position or the second connection position, the tripping piece is located at the original position, one locking assembly is locked with one end of the swing arm in a limiting mode, the other locking assembly is separated from the other end of the swing arm for unlocking, and before the swing arm is driven to rotate to switch the position, the tripping piece is located at the original position. And the releasing piece is driven to rotate to an unlocking position, and the two locking assemblies are driven to rotate by the releasing piece respectively, so that the two locking assemblies are separated from the two ends of the swing arm respectively for unlocking. According to the utility model, the unlocking and locking of the swing arm at different positions are realized by driving the tripping piece in the interlocking mechanism, and the interlocking mechanism has the advantages of simple structure, convenience in operation and small occupied space.

The utility model discloses a three-position dual power conversion switch, comprising a conversion shaft arranged on a shell and two spring members arranged between the conversion shaft and the shell, two installation slide grooves connecting the two spring members are arranged on the shell, the two spring members respectively have first end feet slidably connected in the two installation slide grooves, and second end feet extending and connected to the conversion shaft, when the conversion shaft switches between a first position, a second position and a third position, the first end feet of the two spring members are driven to move and adjust positions in the two installation slide grooves respectively, and a force is applied to the conversion shaft to keep it in the first position, the second position or the third position through the two spring members, and the dual power conversion switch can disconnect the normal power supply and the standby power supply in the third position to achieve the purpose of dual separation, and the dual power conversion switch has a simple operating structure, low cost, reliable and in-place operation switching, and improved product performance.

The present invention relates to the technical field of disconnectors, and discloses an electric operating device for a high-voltage disconnector, comprising a switch assembly, a support seat, a rotating rod rotatably connected in the support seat, a drive sleeve fixed at the end of the rotating rod, and a drive plate fixed on the surface of the drive sleeve; an operating assembly, arranged on one side of the drive plate, comprising a separation and combination member, a support shell arranged on one side of the drive plate, and a screw rod rotatably connected in the support shell. The beneficial effects of the present invention are as follows: 1. The first spring is compressed or stretched by the screw rod, and the drive plate is driven to move quickly by the spring reset elastic force, so as to realize the rapid separation and closing of the knife switch, reduce the generation of arc, reduce the wear of the contacts, and extend the service life of the equipment; 2. An emergency disconnect mechanism composed of a reset member and an electromagnet is provided. When a circuit fails, the electromagnet drives the limit release, and the tension of the seventh spring prompts the reset block to push the moving seat, quickly opening the knife switch, avoiding the expansion of the fault, and ensuring the safety of the power system.

The present invention relates to a quick-break circuit breaker, which includes a main shaft, a spring operating mechanism, a permanent magnet operating mechanism and a closing and opening holding mechanism. The main shaft is respectively connected to three insulating tie rods of the circuit breaker through three sets of triangular link plates arranged in the same direction; the spring operating mechanism includes a closing assembly connected to the main shaft, and a closing spring arranged on one side of the closing assembly. The closing assembly can store energy in the closing spring to drive the circuit breaker to close; the action rod of the permanent magnet operating mechanism is connected to the main shaft through a connecting plate to drive the circuit breaker to open; the closing and opening holding mechanism includes a holding spring, and the torque of the holding spring is balanced with the torque generated by the main shaft to maintain the closing or opening state of the circuit breaker. In the present invention, the spring operating mechanism and the permanent magnet operating mechanism are independent of each other, not restricted by time and position, reducing the possibility of the circuit breaker's no-load operation and improving the stability, reliability and rapidity of the action.

The invention relates to a rotary actuator (1), comprising: - a stator (10), - at least one stator coil (11) which is connected to the stator (10) in such a way that a force acting on the stator coil (11) is transmitted to the stator (10); - an armature (20) which is rotatable about an axis of rotation (2) relative to the stator (10), - at least one armature coil (21) which is connected to the armature (20) in such a way that a force acting on the armature coil (21) is transmitted to the armature (20); - power lines (3) which can be used to energize the at least one stator coil (11), - cables (4) which can be used to energize the at least one armature coil (21), - a rotational angle limiting device (5) which is used to limit a rotation of the armature relative to the stator to a rotational angle range of from 0 to 359 degrees.

The invention discloses an electric spring operating mechanism with a clutch, which relates to the technical field of high-voltage switch equipment and comprises a shell, a power output shaft, a worm gear, a worm, a power shaft, a clutch sleeve and a transmission plate. By arranging the worm gear and the worm, power input of the power output shaft can be achieved through the worm gear and the worm, transmission between the worm gear and the power output shaft is achieved through the separable limiting block and the pin rod, and the worm gear is in transmission connection with the power output shaft only in the energy storage process so that mutual interference of the energy storage process and the energy release process can be avoided; by arranging the clutch sleeve capable of sliding horizontally, the clutch sleeve can ensure the connection between the worm and the input shaft in the energy storage process so as to ensure the stability in the energy storage process, and the clutch sleeve can release the connection between the worm and the input shaft in the release process so as to ensure the stability in the energy storage process. Therefore, mutual interference of energy storage and release processes is prevented from influencing closing or opening of the power output shaft.

The excitation fuse comprises a shell provided with a cavity, a conducting bar is arranged in the shell in a penetrating mode in a sealed mode, a piston and an ignition device are arranged in the cavity of the shell on one side of the conducting bar, and a displacement channel for the impact end of the piston to penetrate through is arranged at the position, needing to be disconnected, of the conducting bar. A sealing plate is arranged at the end, facing the piston, of the displacement channel and makes close contact with the shell on the periphery of the displacement channel, and a sealing structure is arranged between the sealing plate and the shell on the periphery of the displacement channel. The sealing plate is provided with a profiling through hole corresponding to the displacement channel, the profiling through hole allows the impact end of the piston to penetrate through and imitates the peripheral size and shape of the impact end of the piston, arc extinguishing chambers are arranged on the shell on the other side, away from the piston, of the conducting bar, and when the number of the arc extinguishing chambers is multiple, the arc extinguishing chambers are independently arranged. According to the invention, by arranging the sealing plate with the profiling through hole and the sealing structure, the sealing performance and the breaking reliability of the product are improved.

The utility model provides a transmission mechanism and an isolating switch, and belongs to the technical field of electrical equipment. The transmission mechanism is applied to the disconnecting switch, the disconnecting switch comprises a moving contact assembly, and the transmission mechanism comprises a support, a swing lever, a connecting rod assembly and an energy storage part. The swing lever is rotationally connected to the support. The first part of the connecting rod assembly is rotatably connected to the support, and the second part of the connecting rod assembly is connected with the moving contact assembly. The first end of the energy storage piece is connected to the swing lever, and the second end of the energy storage piece is connected to the third part of the connecting rod assembly. The energy storage piece is located on the first side of the connecting rod assembly, and when the swing lever swings relative to the support, the energy storage piece swings along with the swing lever and stores energy. When the energy storage part swings from the first side of the connecting rod assembly to the second side of the connecting rod assembly, the energy storage part releases energy to drive the connecting rod assembly to act to drive the moving contact assembly to rotate. The connecting rod assembly is combined with the moving contact assembly, so that the probability that the contact assembly of the disconnecting switch cannot be disconnected or closed is reduced.

A Thomson coil actuator 100 comprises a disc 106 which is at least partially conductive and at least two conductive coils 104a,b arranged concentrically around an axis 120. When provided with an electric current by a driver circuit 108, the coils drive the disc in a first direction 122 along the axis. The coils do not overlap along the axis, and the driver circuit provides electric current to each coil independently and simultaneously. The driver circuit may comprise at least two capacitors, which each provide a respective current to a respective coil when discharged. Each conductive coil may be arranged in the same plane or in separate planes offset along the axis. The disc may be flat or stepped. The disc may be fixedly coupled to a rod 102 to form an axially movable assembly which is moved in the first direction by the coils. The rod may be coupled to a movable electric contact of a switching mechanism.

The invention relates to a double-control system for a hydraulic operating mechanism of a quick circuit breaker, which comprises a control valve assembly and an electromagnetic repulsion tripping assembly, and is characterized in that the control valve assembly comprises a control valve seat and a control valve core; the electromagnetic repulsion tripping assembly comprises a tripping assembly frame body and a center connecting rod which is connected in the tripping assembly frame body in a sliding mode in the moving direction of the control valve element, and the center connecting rod pulls the control valve element to move rightwards to achieve rapid opening; a low-pressure oil port, a variable oil port and a high-pressure oil port which are distributed from left to right are formed in the control valve seat, and when the center connecting rod pulls the control valve element to the right side to achieve rapid opening, opening of the oil way change-over valve is achieved through the connecting rod assembly. The mechanism starting time is shortened, the opening speed is improved, the contact mechanical separation time is shortened, a traditional electromagnetic valve is arranged on the basis, the dual-redundancy design is adopted, and the reliable action of the other tripping device is not affected when one tripping device breaks down.

The utility model discloses a timing swing arm switch, which comprises a shell, a display screen arranged at the front part of the shell, and a power supply module, a control module and an execution module which are arranged in the shell, the control module at least comprises a control panel which is in electric control connection with the display screen and the execution module, the control panel is provided with a timing module, and the timing module is connected with the display screen and the execution module. The execution module comprises a motor and a swing arm driven by the motor to rotate, one end of the swing arm is provided with a connecting piece, the connecting piece is fixed to a switch to be operated, the swing arm actuates the switch in the first direction, and the swing arm actuates the switch through the connecting piece in the second direction.

A switching device, comprising a shell, and a contact system and two electromagnetic systems which are respectively arranged in the shell, wherein the two electromagnetic systems are oppositely arranged on two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move; the upper armatures of the two electromagnetic systems are connected by means of a linkage shaft; the contact system comprises static contacts and moving contacts that are arranged on contact supports; the linkage shaft is connected to the contact supports, and the two electromagnetic systems respectively drive the contact supports to move by means of the linkage shaft, so that the contact supports drive the moving contacts to be in contact with or separated from the static contacts, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

The invention provides a tap switch device and a switching method thereof, the tap switch device comprises a transformer, a tap switch device and a driving device, the tap switch device is used for adjusting the voltage of the transformer, the tap switch device comprises a tap selector and a change-over switch, and the change-over switch is connected with the transformer. The driving device comprises a first driving mechanism and a second driving mechanism which are connected with each other, the tapping selector and the change-over switch are arranged, the first driving mechanism and the second driving mechanism which are connected with each other are arranged, and the first driving mechanism controls the tapping selector to switch gears; and the second driving mechanism controls the change-over switch to execute the switching action, so that the tap switch device is quickly controlled through the first driving mechanism and the second driving mechanism to quickly adjust the voltage of the transformer, thereby reducing the switching time of the tap switch device and improving the working efficiency of the tap switch equipment.

The invention belongs to the technical field of transformer gear adjusting, and particularly relates to an excitation-free pole-mounted transformer gear adjusting device which comprises a supporting assembly, an execution assembly and a positioning camera, the supporting assembly comprises a base and a supporting rod arranged on the base, and a supporting arm is arranged at the top of the supporting rod; the execution assembly is arranged below the supporting arm and used for adjusting the gear of the transformer, the positioning camera is arranged on the supporting arm and used for calibrating the position of the execution assembly, the supporting rod is a multi-stage telescopic rod, a connecting block is arranged at the top end of the supporting rod, and one end of the supporting arm is fixed to the connecting block. According to the gear adjusting device, screwing-out and resetting of the protective screw cap are achieved through cooperation of the linear sliding rail and the electric rotary clamping jaw, manual climbing operation is not needed, the high-altitude falling risk and the hidden danger of electric shock existing in climbing operation are effectively avoided, and the working efficiency of gear adjusting is improved.