Turnover type opening and closing structure of transformer conveying roller way
By combining the hydraulic pump and the tilting cylinder for drive and linking the proximity switch, the problem of insufficient driving force for the tilting of the transformer conveyor rollers was solved, realizing the vertical storage of heavy roller frames and the automated control of the moving door, thus improving the continuity and efficiency of the production process.
Patent Information
- Application Number
- CN202620020911.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-09
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2036-01-09
AI Technical Summary
In the existing technology, the driving force for the overturning of the transformer conveyor rollers is insufficient, resulting in insufficient overturning angle of the heavy roller frame, making it impossible to store vertically, hindering the closing of the vacuum box's moving door, and affecting the continuity of the production process.
By using a combination of hydraulic pump and tilting cylinder, along with door opening proximity switch, door closing proximity switch and limit switch, the roller frame can be tilted at large angles and automatically controlled to ensure vertical storage.
It provides sufficient driving force for flipping to achieve vertical storage of heavy roller frames, ensures smooth closing of moving doors, and improves the automation level and efficiency of the production process.
Smart Images
Figure CN223878761U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer equipment technical field, especially a kind of turnover type opening and closing structure of transformer conveying roller. BACKGROUND
[0002] In the large-scale production process of power transformer, vacuum oil injection is the core process to guarantee the insulation performance of transformer, and the accurate docking of transformer between conveying roller before and after oil injection directly determines the automation level and overall production efficiency of production line.
[0003] To realize the transfer of transformer between vacuum box and external production line, the prior art usually configures a special conveying mechanism at the entrance and exit of the vacuum box, which mainly consists of a first roller frame, a second roller frame and two sets of turnover driving mechanisms. The first roller frame and the second roller frame are both rotatably installed with roller cylinders for carrying and conveying transformers. One end of the first roller frame is hinged to one end of the second roller frame. The second roller frame can be controlled to turn over relative to the first roller frame by the turnover driving mechanisms, thereby realizing the docking or disengaging with the conveying roller inside the vacuum box.
[0004] However, in actual production, for large and heavy transformers, in order to ensure that the roller has sufficient carrying capacity and rigidity, the structure strength needs to be strengthened by increasing the thickness of the roller. However, the increase in the thickness of the roller directly leads to a significant increase in the overall weight of the second roller frame. The driving force and turning stroke of the existing turnover driving mechanism are limited, and only a small angle (usually less than 30°) of upward turning of the second roller frame can be achieved, which cannot turn the second roller frame with increased weight to a nearly vertical storage state with the first roller frame. This defect directly leads to the second roller frame after turning to protrude from the entrance and exit area of the vacuum box, forming a physical barrier, so that the moving door of the vacuum box cannot be closed smoothly, hindering the continuity of the production process. SUMMARY
[0005] The problem to be solved by the utility model is to provide a turnover type opening and closing structure of transformer conveying roller, which can provide sufficient turnover driving force to turn the heavy roller frame at a large angle and realize the vertical storage of the heavy roller frame.
[0006] To solve the above technical problems, the utility model adopts the following technical solutions:
[0007] The application discloses a turnover opening and closing structure of a transformer conveying roller bed, which comprises a vacuum box and two conveying mechanisms, two opposite side walls of the vacuum box are respectively provided with entrances and exits, the outer sides of the two opposite outer side walls of the vacuum box are respectively provided with movable doors corresponding to the entrances and exits, and the outer sides of the two opposite outer side walls of the vacuum box are respectively provided with opening and closing driving mechanisms capable of driving the movable doors to move along the width direction of the side walls of the vacuum box; the inner cavity of the vacuum box is provided with a conveying roller bed; the two conveying mechanisms each comprise a first roller frame, a second roller frame and two turnover driving mechanisms capable of controlling the turnover of the second roller frame relative to the first roller frame, each second roller frame is located on the inner side of the corresponding first roller frame, the inner end of each second roller frame corresponds to the corresponding entrance and exit and corresponds to the conveying roller bed, and the two turnover driving mechanisms are respectively arranged between the outer end of the corresponding second roller frame and the inner end of the first roller frame; the turnover opening and closing structure is characterized in that the turnover opening and closing structure further comprises a controller, two door opening in-place proximity switches and two door closing in-place proximity switches arranged on the vacuum box, the door opening in-place proximity switches and the door closing in-place proximity switches are respectively located on the left and right sides of the corresponding entrances and exits, the door opening in-place proximity switch is matched with the right side edge of the movable door in the opened state of the movable door, and the door closing in-place proximity switch is matched with the right side edge of the movable door in the closed state of the movable door; the turnover driving mechanism comprises a hydraulic oil pump, a turnover oil cylinder, a swing arm, a rotation stopping block and a limit switch, the hydraulic oil pump is installed at the bottom of the first roller frame, the cylinder body of the turnover oil cylinder is hinged to the inner end side wall of the first roller frame and connected with the hydraulic oil pump, the tail end of the piston rod of the turnover oil cylinder is hinged to the outer end side wall of the second roller frame, the swing arm is located above the turnover oil cylinder, the inner end of the swing arm is hinged to the outer end side wall of the second roller frame, and the outer end of the swing arm is hinged to the inner end side wall of the first roller frame; the rotation stopping block is installed on the outer end edge of the swing arm, the limit switch is installed on the inner end side wall of the first roller frame, and the rotation stopping block is matched with the limit switch; the signal output ends of the two door opening in-place proximity switches, the two door closing in-place proximity switches and the limit switch are respectively electrically connected with the corresponding signal input ends of the controller, and the hydraulic oil pump and the opening and closing driving mechanisms are respectively electrically connected with the corresponding signal output ends of the controller.
[0008] The door opening in-place proximity switch is used for feeding back the completely opened state of the movable door and preventing the movable door from overrunning. The door closing in-place proximity switch is used for feeding back the completely closed state of the movable door and preventing the movable door from not being sealed in place. The limit switch is used for accurately detecting the turnover angle of the second roller frame and ensuring that the second roller frame can be horizontally connected to the conveying roller bed or turned up to a preset storage angle. The hydraulic oil pump provides power for the turnover oil cylinder.
[0009] The transformer is placed on the first roller frame of the conveying mechanism as the input end; then, the controller controls the switch driving mechanism to drive the moving door of the input end to move and open the entrance until the door open-in-place proximity switch sends a door open-in-place signal to the controller. After the controller receives the signal, it starts the hydraulic oil pump, drives the second roller frame to flip down through the piston rod of the flip cylinder, so that the second roller frame is kept horizontal with the first roller frame and is docked with the receiving conveying roller way in the inner cavity of the vacuum box, and then the conveying mechanism is started to convey the transformer to the receiving conveying roller way; when the transformer reaches the receiving conveying roller way, the controller controls the piston rod of the flip cylinder to extend to drive the second roller frame to flip up relative to the first roller frame until the second roller frame is almost perpendicular to the first roller frame to avoid blocking the closing of the moving door, at which time the limit switch sends a flip-in-place signal to the controller. The controller controls the switch driving mechanism to drive the moving door of the input end to move and close the entrance. Finally, when the door close-in-place proximity switch sends a door close-in-place signal to the controller, the moving door of the input end completely closes the entrance.
[0010] When the transformer is to be output from the vacuum box, the controller controls the switch driving mechanism as the output end to drive the corresponding moving door to move and open the entrance until the door open-in-place proximity switch sends a door open-in-place signal to the controller. After the controller receives the signal, it starts the hydraulic oil pump of the output end, drives the second roller frame to flip down through the piston rod of the flip cylinder, so that the second roller frame is kept horizontal with the first roller frame and is docked with the receiving conveying roller way in the inner cavity of the vacuum box, and then the conveying mechanism is moved to convey the transformer out of the vacuum box. After the transformer is completely removed, the second roller frame of the output end is flipped to be received, and the moving door is closed, completing the single oil injection transfer process.
[0011] In the preferred solution, the limit switch is a swing lever limit switch, which comprises a box body, a positioning shaft, a torsional spring, a swing lever and a sensing wheel. The box body is installed on the inner end side wall of the first roller frame. The positioning shaft is installed on the box body. The fixed end of the swing lever is hingedly installed on the end of the positioning shaft. The torsional spring is sleeved on the positioning shaft and is in the box body. One end of the torsional spring is connected with the inner wall of the box body, and the other end of the torsional spring is connected with the fixed end of the swing lever. The sensing wheel is rotatably installed on the movable end of the swing lever and is in contact with the stop block. The swing arm rotates synchronously with the second roller frame, driving the stop block to rotate in the same direction. When the lower end of the stop block touches the sensing wheel at the movable end of the swing lever, the swing lever rotates around the positioning shaft and sends a flip-to-position signal. The signal is transmitted to the controller, which immediately controls the hydraulic oil pump to stop oil supply and the flip cylinder piston rod to stop action. The second roller frame stops upward flipping relative to the first roller frame and is accurately kept at the preset storage angle. When the second roller frame is flipped downward to keep the second roller frame and the first roller frame horizontal, the torsional spring in the box body provides a restoring force to pull the swing lever back to the initial position, driving the sensing wheel on the swing lever to complete the reset action.
[0012] In the preferred solution, each of the two conveying mechanisms further comprises a plurality of rollers and a rotation driving mechanism capable of driving the rollers to rotate. A part of the rollers are rotatably installed on the first roller frame, and the other part of the rollers are rotatably installed on the second roller frame. The rotation driving mechanism is installed on the first roller frame and the second roller frame. The rotation driving mechanism drives the rollers to rotate on the first roller frame and the second roller frame, realizing the conveying function of the conveying mechanism.
[0013] In the further preferred solution, the rotation driving mechanism comprises a driving motor, a speed reducer, an endless chain and a plurality of sprockets. The driving motor and the speed reducer are installed on the first roller frame. The output shaft of the driving motor is in transmission connection with the rotating shaft of one of the rollers through the speed reducer. Each sprocket is installed on the end of the rotating shaft of the corresponding roller, and the endless chain is sleeved on the sprockets. The driving motor drives one of the rollers to rotate through the speed reducer, and the endless chain and the sprockets are engaged, realizing the synchronous and same-direction rotation of all the rollers, ensuring the stable conveying of the transformer.
[0014] In the preferred scheme, the switch driving mechanism comprises a servo motor, a gear, a rack, an upper linear guide rail, a lower linear guide rail, two rollers and two sliders, the upper linear guide rail and the lower linear guide rail are respectively installed on the upper edges and the lower edges of the outer side walls of the vacuum box and are parallel to each other, the movable door is between the upper linear guide rail and the lower linear guide rail, the two sliders are both installed on the upper edges of the movable door, the two sliders are both on the upper linear guide rail and can move along the upper linear guide rail, the two rollers are both rotatably installed on the lower edges of the movable door, the two rollers are both on the lower linear guide rail and can move along the lower linear guide rail; the servo motor is installed on the movable door and is electrically connected with the corresponding signal output end of the controller, the gear is installed on the power output shaft of the servo motor, the rack is installed on the lower edge of the outer side of the vacuum box and extends along the guide direction of the lower linear guide rail, and the rack is engaged with the gear. The servo motor drives the gear to rotate, and under the cooperation of the gear and the rack, the two rollers of the movable door move horizontally along the lower linear guide rail and the two sliders move horizontally along the upper linear guide rail.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] (1) The utility model discloses a power combination of hydraulic oil pump and turnover cylinder, the output torque of hydraulic drive is better than traditional drive, can provide sufficient turnover driving force, can easily drive the second roller frame that is increased in weight due to thickening of the roller, make the second roller frame from horizontal butt joint to nearly vertical with the first roller frame big angle turnover, realize heavy roller frame vertical storage, solve the physical blocking problem of insufficient second roller frame turnover angle in the original structure, ensure that the movable door can be closed smoothly, avoid the interruption of production process.
[0017] (2) The utility model discloses the linkage of door opening in place proximity switch, door closing in place proximity switch, limit switch and controller, realize movable door opening and closing, roller way turnover whole process automation, do not need manual intervention, shorten single transformer butt joint transfer time, improve the overall pace of production line. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the structure schematic diagram of movable door in the utility model embodiment closed state;
[0019] Figure 2 It is the structure schematic diagram of movable door in the utility model embodiment open state;
[0020] Figure 3 It is Figure 2 The structure schematic diagram of conveying mechanism in DETAILED DESCRIPTION
[0021] The utility model will be specifically described below in connection with the drawings and specific embodiment.
[0022] AsFigures 1-3 As shown, the turnover opening and closing structure of the transformer conveying roller way in the embodiment comprises a vacuum box 1, two conveying mechanisms 2, a controller (not marked in the figure), two door opening in place proximity switches 6 and two door closing in place proximity switches 7 arranged on the vacuum box 1, an entrance 11 arranged on each of the two opposite side walls of the vacuum box 1, a movable door 3 corresponding to the respective entrance 11 arranged on the outer side of each of the two opposite outer side walls of the vacuum box 1, and a switch driving mechanism 4 arranged on the outer side of each of the two opposite outer side walls of the vacuum box 1 and capable of driving the movable door 3 to move along the width direction of the side wall of the vacuum box 1; a receiving conveying roller way 5 is arranged in the inner cavity of the vacuum box 1; the door opening in place proximity switch 6 and the door closing in place proximity switch 7 are respectively arranged on the left and right sides of the respective entrance 11, the door opening in place proximity switch 6 is correspondingly matched with the right side edge of the movable door 3 when the movable door 3 is in the opening state, and the door closing in place proximity switch 7 is correspondingly matched with the right side edge of the movable door 3 when the movable door 3 is in the closing state; each of the two conveying mechanisms 2 comprises a first roller frame 21, a second roller frame 22, and two turnover driving mechanisms 23 capable of controlling the turnover of the second roller frame 22 relative to the first roller frame 21, each of the second roller frames 22 is on the inner side of the respective first roller frame 21, the inner end of each of the second roller frames 22 corresponds to the respective entrance 11 and corresponds to the receiving conveying roller way 5, and the two turnover driving mechanisms 23 are respectively arranged between the outer end of the respective second roller frame 22 and the inner end of the first roller frame 21; the turnover driving mechanism 23 comprises a hydraulic oil pump, a turnover oil cylinder 232, a swing arm 233, a rotation stopping block 234, and a limit switch 231, the hydraulic oil pump is installed on the bottom of the first roller frame 21, the cylinder body of the turnover oil cylinder 232 is hinged to the inner end side wall of the first roller frame 21 and the turnover oil cylinder 232 is connected with the hydraulic oil pump, the piston rod end of the turnover oil cylinder 232 is hinged to the outer end side wall of the second roller frame 22, the swing arm 233 is above the turnover oil cylinder 232, the inner end of the swing arm 233 is hinged to the outer end side wall of the second roller frame 22, and the outer end of the swing arm 233 is hinged to the inner end side wall of the first roller frame 21; the rotation stopping block 234 is installed on the outer end edge of the swing arm 233, the limit switch 231 is installed on the inner end side wall of the first roller frame 21, and the rotation stopping block 234 is correspondingly matched with the limit switch 231; the signal output ends of the two door opening in place proximity switches 6, the two door closing in place proximity switches 7, and the limit switch 231 are respectively electrically connected with the corresponding signal input ends of the controller, and the hydraulic oil pump and the switch driving mechanism 4 are respectively electrically connected with the corresponding signal output ends of the controller.
[0023] The open-to-position proximity switch 6 is used to feedback the fully open state of the movable door 3, preventing the movable door 3 from overrunning. The close-to-position proximity switch 7 is used to feedback the fully closed state of the movable door 3, preventing the movable door 3 from not sealing in place. The limit switch 231 is used to accurately detect the turning angle of the second roller frame 22, ensuring that it can be horizontally docked with the receiving conveying roller 5 or turned up to a preset storage angle. The hydraulic oil pump provides power for the turning cylinder 232.
[0024] The transformer 8 is placed on the first roller frame 21 of the conveying mechanism 2 as the input end; then the controller controls the switch driving mechanism 4 to drive the movable door 3 of the input end to move and open the access 11 until the open-to-position proximity switch 6 sends an open-to-position signal to the controller, and after the controller receives the signal, starts the hydraulic oil pump, drives the second roller frame 22 to turn down through the piston rod of the turning cylinder 232, so that the second roller frame 22 is kept horizontal with the first roller frame 21 and is docked with the receiving conveying roller 5 in the inner cavity of the vacuum box 1, and then the conveying mechanism 2 is started to convey the transformer 8 to the receiving conveying roller 5; when the transformer reaches the receiving conveying roller 5, the controller controls the piston rod of the turning cylinder 232 to extend to drive the second roller frame 22 to turn up relative to the first roller frame 21 until the second roller frame 22 is almost perpendicular to the first roller frame 21, avoiding the second roller frame 22 blocking the closing of the movable door 3, at this time the limit switch 231 sends a turning-to-position signal to the controller, and the controller controls the switch driving mechanism 4 to drive the movable door 3 of the input end to move and close the access 11, and finally when the close-to-position proximity switch 7 sends a close-to-position signal to the controller, the movable door 3 of the input end completely closes the access 11.
[0025] When the transformer is to be output from the vacuum box 1, the controller controls the switch driving mechanism 4 as the output end to drive the corresponding movable door 3 to move and open the access 11 until the open-to-position proximity switch 6 sends an open-to-position signal to the controller, and after the controller receives the signal, starts the hydraulic oil pump of the output end to drive the second roller frame 22 to turn down through the piston rod of the turning cylinder 232, so that the second roller frame 22 is kept horizontal with the first roller frame 21 and is docked with the receiving conveying roller 5 in the inner cavity of the vacuum box 1, and then the conveying mechanism 2 is moved to convey the transformer out of the vacuum box 1. After the transformer is completely removed, the second roller frame 22 of the output end is turned in for storage, and the movable door 3 is closed, completing the single-oil-injection transfer process.
[0026] The limit switch 231 is a swing lever type limit switch, which comprises a box body 2311, a positioning shaft 2312, a torsional spring (not shown in the figure), a swing lever 2313 and a sensing wheel 2314. The box body 2311 is installed on the inner end side wall of the first roller frame 21, the positioning shaft 2312 is installed on the box body 2311, the fixed end of the swing lever 2313 is hingedly installed on the end of the positioning shaft 2312, the torsional spring is sleeved on the positioning shaft 2312 and is located in the box body 2311, one end of the torsional spring is connected with the inner wall of the box body 2311, the other end of the torsional spring is connected with the fixed end of the swing lever 2313, and the sensing wheel 2314 is rotatably installed on the movable end of the swing lever 2313 and is in contact with the rotation stopping block 234. The swing arm 233 rotates synchronously with the second roller frame 22, and drives the rotation stopping block 234 to rotate in the same direction; when the lower end of the rotation stopping block 234 touches the sensing wheel 2314 on the movable end of the swing lever 2313, the swing lever 2313 rotates around the positioning shaft 2312 and sends a flip-to-position signal, which is transmitted to the controller, the controller immediately controls the hydraulic oil pump to stop oil supply, the piston rod of the flip cylinder 232 stops action, and the second roller frame 22 stops upward flipping relative to the first roller frame 21 and is accurately kept at a preset storage angle. When the second roller frame 22 is flipped downward, the second roller frame 22 is kept horizontal with the first roller frame 21, and the torsional spring in the box body 2311 provides a restoring force to pull the swing lever 2313 back to the initial position, and drives the sensing wheel 2314 on the swing lever 2313 to complete the reset action.
[0027] Each of the two conveying mechanisms 2 further comprises a plurality of rollers 24 and a rotation driving mechanism 25 capable of driving each roller 24 to rotate, and a part of the rollers 24 are rotatably installed on the first roller frame 21 and the other part of the rollers 24 are rotatably installed on the second roller frame 22, and the rotation driving mechanism 25 is installed on the first roller frame 21 and the second roller frame 22. Each roller 24 is driven by the rotation driving mechanism 25 to rotate on the first roller frame 21 and the second roller frame 22, so as to realize the conveying function of the conveying mechanism 2.
[0028] The rotation driving mechanism 25 comprises a driving motor, a speed reducer, an endless chain and a plurality of chain wheels. The driving motor and the speed reducer are installed on the first roller frame 21, the output shaft of the driving motor is in transmission connection with the rotating shaft of one of the rollers 24 through the speed reducer, each chain wheel is installed on the end of the rotating shaft of the corresponding roller 24, and the endless chain is sleeved on each chain wheel. After being decelerated by the speed reducer, the driving motor drives the rotating shaft of one of the rollers 24 to rotate, and then the endless chain and each chain wheel are engaged, so as to realize the synchronous and same-direction rotation of all the rollers 24, and ensure the stable conveying of the transformer.
[0029] The switch driving mechanism 4 comprises a servo motor 41, a gear (not shown in the figure), a rack (not shown in the figure), an upper linear guide rail 42, a lower linear guide rail 43, two rollers (not shown in the figure) and two sliders 44. The upper linear guide rail 42 and the lower linear guide rail 43 are respectively installed on the upper edge and the lower edge of the outer side wall of the vacuum box 1 and are parallel to each other. The moving door 3 is between the upper linear guide rail 42 and the lower linear guide rail 43. The two sliders 44 are both installed on the upper edge of the moving door 3. The two sliders 44 are both on the upper linear guide rail 42 and can move along the upper linear guide rail 42. The two rollers 46 are both rotatably installed on the lower edge of the moving door 3. The two rollers 46 are both on the lower linear guide rail 43 and can move along the lower linear guide rail 43. The servo motor 41 is installed on the moving door 3 and is electrically connected with the corresponding signal output end of the controller. The gear is installed on the power output shaft of the servo motor 41. The rack is installed on the lower edge of the outer side of the vacuum box 1 and extends along the guide direction of the lower linear guide rail 43. The rack is engaged with the gear. The two rollers 46 of the moving door 3 move horizontally along the lower linear guide rail 43 and the two sliders 44 move horizontally along the upper linear guide rail 42 through the rotation of the gear driven by the servo motor 41 and the cooperation of the gear and the rack.
[0030] In addition, it should be noted that the specific embodiments described in the specification can have different part names, and any equivalent or simple changes made in accordance with the structure, features and principles of the utility model patent concept are included in the protection scope of the utility model patent. The skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, which should belong to the protection scope of the utility model.
Claims
1. A turnover opening and closing structure of a transformer conveying roller bed, comprising a vacuum box and two conveying mechanisms, two opposite side walls of the vacuum box are respectively provided with an entrance and an exit, the outer sides of the two opposite outer side walls of the vacuum box are respectively provided with a moving door corresponding to the corresponding entrance and exit, and the outer sides of the two opposite outer side walls of the vacuum box are respectively provided with an opening and closing driving mechanism capable of driving the moving door to move along the width direction of the side wall of the vacuum box; a receiving conveying roller bed is arranged in the inner cavity of the vacuum box; the two conveying mechanisms each comprise a first roller frame, a second roller frame and two turnover driving mechanisms capable of controlling the turnover of the second roller frame relative to the first roller frame, each second roller frame is located on the inner side of the corresponding first roller frame, the inner end of each second roller frame corresponds to the corresponding entrance and exit and corresponds to the receiving conveying roller bed, and the two turnover driving mechanisms are respectively arranged between the outer end of the corresponding second roller frame and the inner end of the first roller frame; characterized in that: Also include a controller, two open door to the position proximity switch and two close door to the position proximity switch arranged on the vacuum box, the open door to the position proximity switch, the close door to the position proximity switch are respectively on the left and right sides of the corresponding entrance and exit, the open door to the position proximity switch corresponds with the right side of the movable door in the open state of the movable door, the close door to the position proximity switch corresponds with the right side of the movable door in the closed state of the movable door; The turnover driving mechanism includes a hydraulic oil pump, a turnover oil cylinder, a swing arm, a rotation stop block and a limit switch, the hydraulic oil pump is installed at the bottom of the first roller frame, the cylinder body of the turnover oil cylinder is hinged to the inner end side wall of the first roller frame, and the turnover oil cylinder is connected with the hydraulic oil pump, the piston rod end of the turnover oil cylinder is hinged to the outer end side wall of the second roller frame, the swing arm is above the turnover oil cylinder, the inner end of the swing arm is hinged to the outer end side wall of the second roller frame, and the outer end of the swing arm is hinged to the inner end side wall of the first roller frame; The rotation stop block is installed on the outer end edge of the swing arm, the limit switch is installed on the inner end side wall of the first roller frame, and the rotation stop block corresponds with the limit switch; The signal output ends of the two open door to the position proximity switch, the two close door to the position proximity switch and the limit switch are respectively electrically connected with the corresponding signal input ends of the controller, and the hydraulic oil pump and the switch driving mechanism are respectively electrically connected with the corresponding signal output ends of the controller.
2. The turnover opening and closing structure of the transformer conveying roller way according to claim 1, characterized in that: The limit switch is a swing rod type limit switch, which includes a box body, a positioning shaft, a torsional spring, a swing rod and a sensing wheel, the box body is installed on the inner end side wall of the first roller frame, the positioning shaft is installed on the box body, the fixed end of the swing rod is hingedly installed on the end of the positioning shaft, the torsional spring is sleeved on the positioning shaft and is in the box body, one end of the torsional spring is connected with the inner wall of the box body, the other end of the torsional spring is connected with the fixed end of the swing rod, and the sensing wheel is rotatably installed on the movable end of the swing rod and is in contact with the rotation stop block.
3. The turnover opening and closing structure of the transformer conveying roller way according to claim 1, characterized in that: Both the conveying mechanisms further include a plurality of rollers and a rotating driving mechanism capable of driving each roller to rotate, a part of the rollers are rotatably installed on the first roller frame, and the other part of the rollers are rotatably installed on the second roller frame, and the rotating driving mechanism is installed on the first roller frame and the second roller frame.
4. The turnover opening and closing structure of the transformer conveying roller way according to claim 3, characterized in that: The rotating driving mechanism includes a driving motor, a speed reducer, an annular chain and a plurality of sprockets, the driving motor and the speed reducer are installed on the first roller frame, and the output shaft of the driving motor is in transmission connection with the rotating shaft of one of the rollers through the speed reducer; Each sprocket is installed at the end of the rotating shaft of the corresponding roller, and the annular chain is sleeved on each sprocket.
5. The flipper opening and closing structure of the transformer conveyor table according to claim 1, characterized in that: The switch driving mechanism comprises a servo motor, a gear, a rack, an upper linear guide rail, a lower linear guide rail, two rollers and two sliders, the upper linear guide rail and the lower linear guide rail are respectively installed on the upper edge and the lower edge of the outer side wall of the vacuum box and are parallel to each other, the movable door is between the upper linear guide rail and the lower linear guide rail, the two sliders are both installed on the upper edge of the movable door, the two sliders are both on the upper linear guide rail and can move along the upper linear guide rail, the two rollers are both rotatably installed on the lower edge of the movable door, the two rollers are both on the lower linear guide rail and can move along the lower linear guide rail, the servo motor is installed on the movable door and is electrically connected with the corresponding signal output end of the controller, the gear is installed on the power output shaft of the servo motor, the rack is installed on the lower edge of the outer side of the vacuum box and extends along the guiding direction of the lower linear guide rail, and the rack is engaged with the gear.