58results about How to "Realize automatic locking function" patented technology

The invention discloses an automobile lock control method and an automobile lock control system based on Bluetooth and cloud recognition. The automobile lock control method comprises the following steps: transmitting connection state information of respective Bluetooth modules of an automobile controller and a mobile terminal bound with the automobile controller to a cloud platform respectively; judging whether the Bluetooth of the automobile controller and the mobile terminal is disconnected or not by the cloud platform according to the connection state information; and if the Bluetooth connection of the automobile controller and the mobile terminal is broken, transmitting a locking instruction to the automobile controller by the cloud platform and executing locking operation by the automobile controller. With the adoption of the automobile lock control method and system, the portability and security of locking and unlocking operation of an automobile are improved.

The invention discloses an oil cylinder tail end automatic lockup valve and a hydraulic oil cylinder with the oil cylinder tail end automatic lockup valve. The automatic lockup valve comprises a valve body mounted on the oil cylinder wall at the tail end of an oil cylinder, wherein a valve element stretching into the oil cylinder is arranged on the valve body; a spring cavity is formed below the valve element; reset springs are arranged in the spring cavity; an oil leakage plug is arranged at the bottom of the spring cavity; a seal ring is arranged between the valve element and the valve body; a cavity formed between the valve body below the seal ring and the valve element is a guide oil cavity; a guide oil port is formed in the side wall of the valve body; and the guide oil port is communicated with the guide oil cavity. An hydraulic oil cylinder piston rod is completely locked up and is prevented from accidently moving through a lockup structure of a novel oil cylinder.

The invention discloses a female die wedge block locking mechanism of an automatic forging press. The female die wedge block locking mechanism comprises a rack; a female die holder is arranged on the rack, and a female die is arranged in the female die holder; the connecting face of the female die and the female die holder is a female die locking inclined face; a female die locking sleeve and a female die locking block are arranged on the female die holder; the female die locking sleeve is perpendicular to the female die locking block to be inserted into the female die locking block; and the contact faces of the female die locking sleeve and the female die locking block serve as matched locking inclined faces; the top end of the female die locking block tightly abuts against the female die locking inclined faces; and a double-head bolt penetrates the female die locking sleeve to be connected with the female die holder. Through additional arrangement of the female die locking block, on the basis of the force amplifying principle of an inclined face mechanism, through vertical moving of one wedge block, the automatic locking function is achieved; the female die is reliably locked in the female die holder, locking is firm and reliable, and locking force is large; and machining is easy, and working reliability of a machine tool is ensured.

The invention provides an end execution mechanism and online locking method of a power line inspection robot. The end execution mechanism of the power line inspection robot comprises a wheel type mechanism for walking on a power line and claw type mechanisms for locking the end execution mechanism on the power line, the wheel type mechanism and the claw type mechanisms are arranged on arms of the power line inspection robot, the two claw type mechanisms are arranged on the two sides of the wheel type mechanism respectively, and the end execution mechanism of the power line inspection robot is locked on the power line after the two claw type mechanisms are closed. The online locking method of the power line inspection robot comprises the steps that when the two claw type mechanisms are closed, the power line applies downward force to the two claw type mechanisms and applies upward force to a driving wheel, three-point supporting is formed, and the wheel and claw composite type end execution mechanism is fixed and locked on the power line. The walking function and the clamping locking function are achieved, and good safety and high practicality are achieved.

The invention discloses an automatic reset locking mechanism and a VTM machine provided with the automatic reset locking mechanism. The automatic reset locking mechanism comprises a cam lock, a torsion spring, a hook plate, a hook pin and a hook plate positioning shaft, wherein the hook plate is positioned and supported by the hook plate positioning shaft; the periphery of the hook plate positioning shaft is sleeved with the torsion spring, and one end of the torsion spring is connected with the hook plate; the hook plate is in linkage connection with a lock tongue of the cam lock; the hook plate rotates around the hook plate positioning shaft under the driving of the lock tongue of the cam lock until the hook plate is unlocked from the hook pin, while the hook plate automatically is locked with the hook pin under the action of restoring force of the torsion spring. Therefore, an opening / closing part can automatically close a fixing part without using a key to rotate the lockset after the lockset is unlocked, so as to avoid that a user forgets to turn off the opening / closing part after the opening / closing part is turned on.

The invention provides an automatic gear locking method of an electric vehicle. The method comprises the steps of: detecting basic parameters of the vehicle to obtain operation working conditions of the vehicle; estimating a slope value of a present road; determining if the slope value of the present road is located in a gear locking range; if so, prohibiting the gear shifting operation; and if not, allowing the gear shifting operation. The automatic gear locking method and system of the electric vehicle can estimate road slope parameters through such information as actual motor torque, gear and vehicle speed, can calibrate the slope parameters to know the time of gear locking and the time of gear unlocking, and can calibrate a thread through an overall vehicle controller to achieve the automatic gear locking function. In addition, the automatic gear locking method and system of the electric vehicle need less excessive hardware structure change, use software algorithms for completion,and are low in implementation cost, short in period and high in implementation feasibility.

The invention discloses an online detection device for sulfur hexafluoride gas of a charged high-altitude circuit breaker and a detection method. The online detection device comprises a frame body with universal self-locking roller wheels at the bottom part and a plurality of operating rods, wherein the frame body is provided with two symmetrical sliding-way mechanisms; each sliding-way mechanism comprises two sliding rails symmetrically arranged on the frame body; a sliding block is arranged between the sliding rails; a limiting block is arranged between the upper parts of the two sliding rails and is provided with an angle and tightness adjusting mechanisms of the operating rods; the sliding block is provided with a tightness adjusting mechanism of the operating rods; the frame body is internally provided with an electric pushing-pulling rod connected with the sliding block; and one end of each operating rod is provided with a detecting mechanism. The online detection device and the detection method disclosed by the invention have advantages that the pointing angles of the operating rods are conveniently adjusted, and convenience is brought for online horizontal-vertical detection of high-altitude power equipment with 360-degree rotation by maintainers.

The invention discloses an energy-saving cooling system. The energy-saving cooling system comprises a cooling tower and a water pump which is connected with the cooling tower, wherein a fan is arranged above the cooling tower, a water turbine is arranged below the fan and is connected with the water pump, and a supercharger is arranged between the water pump and the water turbine and is close to a water outlet end of the water pump. The energy-saving cooling system is simple and ingenious in structure, the power consumption is greatly reduced, an automatic locking function can be realized when the system is not used, moreover, the overall operation cost is lowered, and the long-term development is benefited.

The invention discloses an intelligent lock cylinder which comprises a mechanical lock cylinder body, a driver, an intelligent module and a control button. The driver comprises a special-shaped piece, a double-layer reduction box, a micro motor and a hand wheel. The double-layer reduction box comprises a first input shaft, a second input shaft and an output shaft. The first input shaft is in driven connection with an output shaft of the micro motor. A gear is arranged on the second input shaft. The output shaft is in driving connection with a rotating shaft of the mechanical lock cylinder body. A clamping groove matched with the interior of the hand wheel is formed in the outer side of the special-shaped piece. Internal teeth are arranged on the inner side of the special-shaped piece and engaged with the gear of the second input shaft. The output end of the intelligent module is in control connection with the micro motor, and the input end of the intelligent module is connected with the control button. By the adoption of the technical scheme, the intelligent lock cylinder has the beneficial effects that the intelligent module is arranged, cell phone control of the lock cylinder and entering right distribution of visitors can be achieved, and the intelligent lock cylinder can be switched into an intelligent home platform seamlessly so that an owner can manage the home better.

A sliding door lock for a half-height safety door comprises a lock hook, an installation plate assembly, a lock plate assembly, a hand unlocking assembly and an automatic unlocking assembly. The installation plate assembly comprises an installation plate, lock plate support shafts and a lock hook support shaft, wherein the lock plate support shafts and the lock hook support shaft are fixed on the installation plate; and the lock plate assembly comprises a lock plate and a lock shaft which is fixed on the lock plate, a plurality of long vertical circular holes are arranged on the lock plate, the lock plate support shafts are inserted into the plurality of long vertical circular holes, the lock plate can freely and vertically move by means of the support of the lock plate support shafts, and the lock shaft penetrate through a long square hole on the installation plate to be matched with the lock hook which is installed on a lock hook rotation shaft and can rotate around the lock hook rotation shaft. During locking, the lock shaft is placed on the lock hook to limit the lock shaft to move, and during unlocking, the lock hook rotates while the lock shaft vertically drops; and the automatic unlocking assembly is mainly composed of an electromagnet and an unlocking shaft, wherein the unlocking shaft is fixed on a sliding shaft of the electromagnet and moves with the movement of the sliding shaft of the electromagnet, and the unlocking shaft is fixed on the upper portion of the lock plate.

The invention discloses a lock with a four-way bolt. The lock comprises a main bolt, a back bolt, an upper bolt, a lower bolt and a lock core, wherein a drive gear is coaxially connected with a lock body and a door handle; a control gear which is perpendicular to the main bolt is horizontally installed on the lock body; a strip gear which is meshed with the drive gear and a strip gear which is meshed with the control gear are arranged on the main bolt; and strip gears which are meshed with the control gear are arranged on the back bolt, the upper bolt and the lower bolt. By mounting the drivegear and the control gear in the lock body and mounting the corresponding strip gears on the four-way bolt, the invention realizes the aim that a gear drive way replaces tension spring drive in the traditional lock structure, thereby not only ensuring the effective drive of the bolt, but also breaking through the bolt length limit caused by the tension spring structure and being beneficial to improving the safety performance of the whole lock; meanwhile, the mechanical performance of the gear drive structure is better than that of a tension spring drive structure, therefore, the service life of the lock is greatly improved.

An integrated one-way operation self-locking movable side guard plate fixing device comprises a slideway guide rod, a cylindrical spiral spring, a self-locking fixed type elastic steel bar, a sleeve, a seal plate, a fixed base, a catch bolt, a slideway guide rod fixing pin and a fixing pin, wherein one end of the elastic steel bar is fixed to the fixed base, and the other end of the elastic steel bar slides in a slideway of the slideway guide rod. When a jack is pushed horizontally to retreat, the elastic steel bar bounces off from a fixing position A and automatically moves to a fixing position B along the slideway, and then retreating and locking of a side guard plate are achieved; when the jack is pushed horizontally again, the elastic bar bounces off from the fixing position B and automatically moves to the fixing position A, and then stretching and locking of the side guard plate are achieved. When hydraulic supports conduct normal support on a working face, the self-locking fixed type elastic steel bar slides in the slideway freely under the elasticity of the spiral spring according to the distance between the supports, so that inter-support sealing is achieved. By the adoption of the device, automatic locking of the hydraulic support movable side guard plate is achieved.

The invention provides a rotational positioning mechanism and an upper limb rehabilitation device with the mechanism, relates to the technical field of rehabilitation training instruments, and mainly aims to solve the technical problems that a rotational positioning mechanism in a traditional positioning device cannot be posited accurately and is easy to slide. The rotational positioning mechanism comprises a fixing assembly and a rotating assembly in pivot joint through a shaft, wherein the rotating assembly is arranged on the peripheral side of the shaft in a sleeving way; a locking assembly capable of moving up and down along an axis direction of the shaft is arranged on the shaft; and when the locking assembly is acted upon by an external force so as to move toward a direction far away from the rotating assembly, the plug connection of the locking assembly and the rotating assembly can be cancelled so as to relieve the locking of the locking assembly on the rotating assembly, so that the rotating assembly can rotate relative to the fixing assembly. The locking assembly comprises a gland, a positioning plate, a guiding screw and an elastic piece; the gland moves along a length direction of the guiding screw under the actions of the elastic piece and the external force, so that the locking on the rotating assembly is realized; and the positioning plate is used for limiting the gland from rotating.

The invention relates to a self-bouncing structure, in particular to a lock block self-bouncing structure of an anti-theft door lock. The lock block self-bouncing structure comprises a shell, a main bolt assembly, an inclined bolt assembly and a first fixing pin are arranged in the shell, a fixing sheet is arranged between the main bolt assembly and the first fixing pin, a second fixing pin is arranged on a first unlocking transmission sheet, a transmission mechanism comprises a second unlocking transmission sheet, the second unlocking transmission sheet is internally provided with an unlocking hook, and the second fixing pin and the unlocking hook have a linkage state and a non-linkage state; and in the linkage state, the second fixing pin abuts against the unlocking hook and pulls the second unlocking transmission sheet to achieve conversion from the locking state to the unlocking state. According to the lock block self-bouncing structure, on the basis that the structure strength ofan existing lock inclined bolt assembly, only several parts are increased for achieving the automatic locking function on a lock body; and seamless connection of a self-bouncing lock body and a commonlock body can be achieved, the die developing cost is saved, social cost is saved, and the beneficial effects of being simple in structure, convenient to machine and easy to assemble are achieved.

The invention relates to the technical field of ecological restoration, and discloses a fixing device for preventing an impeller of an ecological restoration aerator from slipping, which comprises a blade, an impeller is fixedly connected to the middle of the blade, a fixed wheel is fixedly connected to the front side of the impeller, a rotating shaft is fixedly connected to the middle of the impeller, and a rotating mechanism is fixedly connected to the outer ring of the rotating shaft. A detection mechanism is fixedly connected into the rotating mechanism, locking mechanisms are fixedly connected into the rotating mechanism and located on the two sides of the detection mechanism, and an alarm mechanism is fixedly connected into the fixed wheel. According to the fixing device for preventing the impeller of the ecological restoration aerator from slipping, due to the fact that the impeller slips, a fixed wheel and a rotary disc are staggered to drive a connecting rod to move, the connecting rod drives a sliding block to move outwards, the sliding block drives a hook to move, a push block is released in the hook moving process, and the push block moves towards the inner side under the action of a spring after being released; the push block drives the swing rod to rotate, the automatic detection function is achieved, impeller slipping is found in time, and the equipment reliability is improved.

The invention discloses a door switch device. The door switch device comprises a device main body, a speed regulating device disposed in the device main body and a locking device disposed in the device main body; the speed regulating device comprises a first cavity formed in the device main body, a first working block which can slide up and down is arranged in the first cavity, and first limitingslots which are communicated with each other are symmetrically formed in the inner walls of the left and right sides of the first cavity. At present, in some public places, many entrances and exits are provided with rotating doors, the rotation speed of most of the rotating doors cannot be adjusted according to the change of flow of people under normal circumstances, and the rotating doors need tobe pushed by human power for rotation and do not have locking functions. The designed door switch device aims at achieving the effects that the rotation speed of the door switch device can be increased to cope with the flow of people in a peak period when the flow of people is large, the door switch device can also be locked, and the functions of fire prevention and theft prevention when an emergency occurs can be achieved.

The present invention provides a motor testing device for new energy automobiles. The device comprises a temperature sensor, an alarm, a positioning sleeve, an electromagnet, a metal top rod, a contact switch, a nut seat I, a bidirectional ball screw, and a nut seat II. The temperature sensor is arranged at the middle part of the internal upper end surface of a sealing cover. The alarm is arranged at the middle part of the upper end surface of the sealing cover. Based on the design, the temperature of a motor can be monitored in real time. The positioning sleeve is fixed on the right end surface of the sealing cover. The electromagnet is arranged on the internal annular side surface of the positioning sleeve. The metal top rod is arranged on the right end surface of a sealing door. The contact switch is arranged at the internal bottom of the positioning sleeve. In this way, the automatic locking function of the sealing door is realized. The nut seat I and the nut seat II are symmetrically arranged on the bidirectional ball screw. The bidirectional ball screw is arranged at the middle part inside a fixed groove. Therefore, a to-be-tested motor can be quickly loaded and clamped. The device is reasonable in structure, good in loading and clamping effect, convenient in operation, good in safety protection performance, strong in practicability and high in reliability.

The invention discloses a door opening-closing device and a using method thereof. The door opening-closing device comprises a device body, an opening-closing device and a locking device, wherein the opening-closing device is arranged in the device body; the locking device is arranged in the device body; the opening-closing device comprises a first wire rotating cavity arranged in the device body;and a first motor is fixedly arranged in the inner wall of the upper side of the first wire rotating cavity. Currently, a lot of automatic doors are sold in the furniture market; most of the automaticdoors can only be locked through remote control or buttons after being closed, cannot be always kept in the open state, and are relatively troublesome to use; in order to overcome the defects, the door opening-closing device which is capable of automatically locking a door once the door is closed, is capable of always keeping the door in the open state when the door is pulled to the greatest extent, has the relative degree of automation, and is capable of automatically closing the door just through remote control is designed; and the using method of the door opening-closing device is furtherdesigned.

The invention discloses a replaceable needle fixing sleeve structure and a crochet needle combination device. The replaceable needle fixing sleeve structure comprises a needle shank and a needle cap;the needle shank comprises a first end and an opposite second end, the end face of the first end is provided with an elongated accommodating groove for accommodating a crotch needle, the needle cap ispenetratingly provided with an avoidance hole for allowing the crotch needle to pass through, the needle cap is detachably connected with the first end, and when the needle cap is connected to the first end, the avoidance hole and the accommodating groove are located in opposite positions. The crotch needle combination device comprises a crotch needle and the replaceable needle fixing sleeve structure; the crotch needle is inserted into the accommodating groove of the needle shank of the replaceable needle fixing sleeve structure, and the needle cap of the replaceable needle fixing sleeve structure sleeves the crotch needle and is connected to the needle shank so as to fix the crotch needle and the needle shank. The replaceable needle fixing sleeve structure allows the crochet needle to be easily held and allows the crochet needle to be easily replaced, so that darning efficiency is improved.

The invention discloses an electric power sliding door opening and closing system and a using method thereof. The devices used in the method comprise a device main body, a locking device arranged in the device main body, and a sliding device arranged in the device main body, the locking device comprises a first rotating cavity arranged in the device main body, a first gear is rotatably arranged inthe first rotating cavity, and the front end of the first gear is fixedly connected with a first wire rotating wheel through a rotating shaft. At present, warehouse doors of certain factories generally need to be closed by users through manpower, then the warehouse doors are locked, door bodies of the warehouse doors are relatively heavy, manual pulling of the warehouse doors needs great efforts,and meanwhile, an automatic locking function is not achieved. Thus, the electric power sliding door opening and closing system and the using method thereof which aim at achieving the flowing effectsthat one-button type opening and closing of a door plate can be achieved, meanwhile, the automatic locking function is achieved, and the door plate can be automatically opened after one-button unlocking are designed.

The invention provides an automatic locking device and a using method. The automatic locking device comprises an outer shell, wherein a conical inlet is machined at the top end of the outer shell; a through hole is machined in the middle of the outer shell in the length direction of the outer shell in a penetrating mode, a connecting rod mechanism mounting groove is machined in the bottom layer ofthe outer shell, a middle partition plate is formed between the connecting rod mechanism mounting groove and the through hole, sliding grooves are symmetrically machined in the two sides of the middle partition plate, locking blocks are mounted on the sliding grooves in a sliding fit mode, a returning mechanism is mounted between the locking blocks and the outer shell, and the locking blocks anda locking head block form hooking locking fit; and the locking blocks are matched with a synchronous connecting rod mechanism mounted in the connecting mechanism mounting groove and drive the synchronous connecting rod mechanism to slide along the sliding grooves so as to achieve locking and loosening functions. The automatic locking device can achieve the automatic locking function, and then meets the using requirement of self-locking.

The invention discloses a plug-in spare tire mechanism, which comprises a beam assembly, a rotation shaft support, a locking module bracket, a hinge swing arm, a sliding column mechanism and a spare tire frame, wherein guide arms are connected to two ends of the beam assembly and embedded into a rear longitudinal beam of a vehicle body; the rotation shaft support is arranged at one end of the beam assembly; the locking module bracket is fixed in the middle of the beam assembly, a lock and a shifting fork are fixed on the locking module bracket, and the shifting fork is used for unlocking; the hinge swing arm is connected to the rotation shaft support through a rotation shaft in a rotating mode; the sliding column mechanism is arranged on the rotation shaft, connected to a guy cable and controlled to be unlocked and locked by the guy cable; and the spare tire frame is connected to the hinge swing arm, a spare tire fixing support is fixed on the spare tire frame, a spare tire is fixed on the spare tire fixing support, and a shifting lever connected to the shifting fork and a handle connected to the guy cable are arranged on the spare tire frame. By the plug-in spare tire mechanism, the shortcomings in the prior art are overcome; the plug-in spare tire mechanism is convenient to use in daily life and easy to operate, an automatic locking function can be realized in real time at the unlocking and locking positions, and an anti-theft function is realized.

A sliding door lock for a half-height safety door comprises a lock hook, an installation plate assembly, a lock plate assembly, a hand unlocking assembly and an automatic unlocking assembly. The installation plate assembly comprises an installation plate, lock plate support shafts and a lock hook support shaft, wherein the lock plate support shafts and the lock hook support shaft are fixed on the installation plate; and the lock plate assembly comprises a lock plate and a lock shaft which is fixed on the lock plate, a plurality of long vertical circular holes are arranged on the lock plate, the lock plate support shafts are inserted into the plurality of long vertical circular holes, the lock plate can freely and vertically move by means of the support of the lock plate support shafts, and the lock shaft penetrate through a long square hole on the installation plate to be matched with the lock hook which is installed on a lock hook rotation shaft and can rotate around the lock hook rotation shaft. During locking, the lock shaft is placed on the lock hook to limit the lock shaft to move, and during unlocking, the lock hook rotates while the lock shaft vertically drops; and the automatic unlocking assembly is mainly composed of an electromagnet and an unlocking shaft, wherein the unlocking shaft is fixed on a sliding shaft of the electromagnet and moves with the movement of the sliding shaft of the electromagnet, and the unlocking shaft is fixed on the upper portion of the lock plate.

The invention provides a high-voltage incoming cabinet with a self-locking function and a working method of the high-voltage incoming cabinet. The high-voltage incoming cabinet comprises a circuit breaker chamber; the interior of the circuit breaker chamber is provided with a rear side wall, a left side wall and a right side wall, wherein the rear side wall is provided with a second contact groupand a first contact group disposed sequentially along a vertical direction; the high-voltage incoming cabinet further comprises a covering component, a limiting component, a first assembly and a second assembly; the first assembly includes a first rotating component, a second rotating component, a first connecting component, a second connecting component, a first wrench, a second wrench, a blocking component, a handle, a spring and a torsion spring; one end of the spring is fixed, and the other end of the spring is disposed on the handle; the connecting point of the spring and the handle and the operating portion of the handle are respectively located at two sides of a second rotating shaft; the first rotating component is connected with the torsion spring; and the torsion spring sleeves afirst rotating shaft. The high-voltage incoming cabinet of the invention has the advantages of simple structure, reliable work, good protection effect and the like.

The invention provides an automatic gear locking method for an electric vehicle, which includes the following steps: detecting the basic parameters of the vehicle to obtain the operating conditions of the vehicle; estimating the slope value of the current road; determining whether the slope value of the current road is in the gear locking range; If it is not in the locked range, the gear shifting operation is prohibited, and if it is not in the locked gear range, the gear shifting operation is allowed. The automatic gear-locking method and system for an electric vehicle provided by the present invention can estimate road gradient parameters based on information such as motor actual torque, gear position, vehicle speed, etc., and can also calibrate at what threshold the gradient parameter needs to be locked and when to release the gear. And it can also calibrate the threshold through the vehicle controller to realize the automatic locking function. In addition, the automatic gear-locking method and system for electric vehicles provided by the present invention do not need too much modification of the hardware structure, and are all completed by software algorithms. The implementation cost is low, the cycle is short, and the implementation feasibility is high.

A baffle device achieving automatic locking comprises a baffle, a rotating shaft, a fixed frame, a locking part and a control component. A rotating shaft hole corresponding to the rotating shaft is formed on the fixed frame. The rotating shaft penetrates through the rotating shaft hole to be fixedly connected with the baffle. A locking hole perpendicularly crossing with the rotating shaft hole isformed on the fixed frame, and a locking groove is formed at the position, corresponding to the locking hole, of the rotating shaft. The control component comprises an elastic component and a pressingblock arranged at the free end of the elastic component. The shape of the locking hole and the shape of the locking groove are matched with the shape of the locking part. When the elastic component is in an energy storage state, a groove or a boss is arranged at the position, corresponding to the locking hole, of the pressing block, the locking part is located in the groove and the locking hole or located in the locking hole, and the rotating shaft can drive the baffle to rotate. When the elastic component is automatically converted into an energy release state from the energy storage state,the locking part is clamped in the locking hole and the locking groove, the rotating shaft is automatically locked, the baffle is fixed in front of the knee of a human body, and the function of increasing the supporting strength of the leg is achieved.

The invention provides a transformer that is convenient for maintenance, which is characterized in that it includes: a transformer main body, a lifting device, a roller assembly and several guide rails, the roller assembly includes a telescopic device and a roller, and the roller is arranged on the transformer through the telescopic device in the groove at the bottom of the main body. In the present invention, the roller is designed as a structure that can be lifted, and the transformer is directly placed on the guide rail, which avoids safety accidents such as sliding and dumping of the transformer when placed on the roller; With the cooperation of the transformer, the transformer can be easily removed from the box-type substation when the transformer is overhauled, which greatly saves manpower and material resources, and is convenient for maintenance and high in work efficiency.