A transformer core stacking and turning apparatus and working method

Abstract

The application discloses a transformer core stacking and overturning device and a working method, which comprises a base support frame, a positioning stacking and overturning device is installed on the base support frame, and a holder is arranged on one side of the base support frame and matched with the overturning device. The application relates to the technical field of transformer core overturning devices, and has the advantages that the base support frame and the holder can be installed in a factory area through threaded connections, so that the device can be conveniently installed and position-adjusted in the later period, operation is simple, the positioning stacking and overturning device and the holder have a first position and a second position, when being in the first position, the lifting frame jacks up the bottom support frame of the base support frame, so that the door-shaped rotating frame is transversely fixed, the staff can conveniently stack the iron core, the load of the rotating power device is reduced, key components such as shafts and bearings are protected, and the service life of the device is prolonged.

Description

Technical Field

[0001] This invention relates to the field of transformer core flipping equipment technology, and in particular to a transformer core stacking and flipping equipment and its working method. Background Technology

[0002] The transformer core is the main magnetic circuit component of a transformer. Currently, the cores of large and medium-sized transformers are generally made of high-permeability, low-loss grain-oriented silicon steel sheets stacked together. To minimize magnetic reluctance and iron losses, the industry widely adopts advanced processes such as stepped stacking and overlapping stacking. After the transformer core is stacked, it is usually necessary to use a flipping device to flip the transformer core from a horizontal position to a vertical position. Existing technologies involved include:

[0003] 1. A method and system for stacking and flipping transformer cores for processing, disclosed in CN120388831A, relates to the field of transformer core processing technology, including: S1: stacking and fixing the cores on a stacking table at a stacking station; S2: controlling a transfer device to transfer the stacking table to a main flipping table and fixing it; S3: controlling a transfer device to transfer a receiving bracket to a secondary flipping table and fixing it; S4: pushing the secondary flipping table to rotate upward 90° around the hinge seat; S5: pushing the table surface of the secondary flipping table to extend until it is pressed against the side of the core; S6: pushing the main flipping table to rotate around the hinge seat; and simultaneously controlling the retraction of the secondary telescopic cylinder.

[0004] 2. A transformer core stacking and turning platform with publication number CN220106255U includes a base. An installation groove is provided on the upper surface of the base. A rotating sleeve is welded to one side of the installation groove, and a rotating shaft is installed on one side of the rotating sleeve. A threaded rod is installed, and a control motor can adjust the forward or reverse rotation of the threaded rod. The threaded rod and a moving block are threadedly connected. When the threaded rod rotates, the moving block can be adjusted to move left or right. A limiting groove and a limiting rod slide together to restrict the position of the moving block to only lateral movement. A positioning shaft and a positioning plate rotate together to adjust the rotation of the sliding plate and the placement plate. The sliding plate and the placement plate are in the shape of the number "7". During turning, the control motor adjusts the moving block to move horizontally, pulling the sliding plate with a support rod to rotate it, thus turning it upright and completing the turning. Conversely, adjusting the moving block and using the support rod to push the sliding plate allows the placement plate to be placed flat.

[0005] In some of the aforementioned existing technologies, it is necessary to excavate a pit foundation in the transformer core factory area to install the turning equipment. However, excavating the pit foundation requires professional civil engineering construction, which is quite difficult. Moreover, once the pit foundation is completed, it is difficult to move the work site in the future. In the aforementioned existing technologies, the components supporting the vertical iron core are all integral structures, which do not have space to remove the vertical iron core from the equipment. They can only be used in conjunction with hoisting equipment to remove the vertical iron core from the equipment. This results in low work efficiency and a limited scope of application. In view of this, in-depth research was conducted on the above problems, which led to the development of this case. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by designing a transformer core stacking and flipping device and its working method. This invention solves the problem of having to dig a pit in the transformer core factory area to install the flipping device. However, digging a pit requires professional civil engineering construction, which is difficult to carry out. Once the pit is built, it is difficult to move the work site in the future. In the above-mentioned prior art, the components supporting the vertical iron core are all integral structures, which do not have space to remove the vertical iron core from the equipment. They can only be used with hoisting equipment to remove the vertical iron core from the equipment, resulting in low work efficiency and limited applicability.

[0007] The technical solution of the present invention to achieve the above objectives is as follows: a transformer core stacking and flipping device, including a base support frame, a positioning stacking and flipping device installed on the base support frame, and a frame holder provided on one side of the base support frame and matching the flipping device;

[0008] The positioning stacking and flipping device includes a portal frame, on which shafts are fixedly installed on both sides. The portal frame is movably mounted on a base support frame via the shafts. A rotary power unit is installed at one end of the shaft. A bottom support frame is provided at the end of the portal frame near the frame holder. A first passage opening is provided at the center of the bottom support frame and located at the center of the portal frame. The first passage opening is used for the passage of a lifting AGV vehicle. A clamping support is installed on the side wall of the portal frame.

[0009] The support includes an obstacle avoidance power unit, which is located on one side near the bottom support frame. A lifting frame is mounted on the obstacle avoidance power unit, and the lifting frame is correspondingly arranged with the bottom support frame.

[0010] The positioning stacking flipper and the holder have a first position and a second position;

[0011] The first position is where the portal frame and the base support frame are set at 90 degrees, and the lifting frame is close to the positioning stacking flipper in a lifting state. At this time, the bottom support frame is movably attached to the lifting frame.

[0012] The second position is where the portal frame and the base support frame are arranged parallel to each other. The clamping support is movably attached to the portal frame, and the lifting frame is in a retracted state away from the positioning stacking flipper. At this time, the gap between one end of the bottom support frame and the lifting frame is the second passage opening, which is used for the passage of the top-lifting AGV vehicle.

[0013] Preferably, the bottom support frame includes two bottom strips, which are respectively installed at both ends of the portal frame. Each bottom strip is equipped with a support strip, and the gap formed between the ends of the support strips on each bottom strip is a first passage opening.

[0014] Preferably, the clamping support includes two fixed square tubes, which are fixedly installed on the side wall of the portal frame. A guide square tube is installed between the two fixed square tubes. Two sliding square tubes are movably fitted on the guide square tube. A positioning bolt is threadedly inserted into each of the two sliding square tubes, and one end of the positioning bolt is movably attached to the guide square tube.

[0015] Preferably, the rotary power unit includes an n-shaped support, which is disposed on the side of the portal frame away from the bottom support frame. A servo motor is mounted on the n-shaped support, and a reducer is mounted on the drive end of the servo motor. A drive sprocket is fixedly mounted on the output end of the reducer, and a driven sprocket is fixedly mounted on the shaft. A chain is movably mounted on the driven sprocket and the drive sprocket.

[0016] Preferably, the foundation support frame includes uprights, the shaft is movably inserted into the uprights via bearings, and a fixing channel steel bar is installed at the bottom of the uprights.

[0017] Preferably, the obstacle avoidance power unit includes a main body fixing frame, which is disposed on one side of the foundation support frame. A first hydraulic cylinder is fixedly inserted on the main body fixing frame. A bottom crossbar is installed on the telescopic end of the first hydraulic cylinder. Connecting frames are installed on both sides of the lower wall of the bottom crossbar, and rollers are installed on both sides of the lower wall of the connecting frames.

[0018] Preferably, the lifting frame includes a portal-shaped support frame, on which a plurality of first guide rods are movably inserted. A lifting frame is installed at one end of each of the plurality of first guide rods. A first through hole is provided in the center of the portal-shaped support frame. A second hydraulic cylinder is installed in the center of the upper wall of the bottom crossbar. The telescopic end of the second hydraulic cylinder movably passes through the first through hole. The lifting frame is installed on the telescopic end of the second hydraulic cylinder.

[0019] Preferably, a second guide rod is installed on the bottom crossbar, and the second guide rod is movably inserted into the main body fixing frame. An auxiliary fixing frame is also installed on the first hydraulic cylinder, and a second through hole coaxial with the second guide rod is opened on the auxiliary fixing frame.

[0020] Preferably, multiple reinforcing ribs are installed between the support strip and the bottom strip.

[0021] A working method includes the following operational steps:

[0022] Step 1: Fix the foundation support frame and the frame holder on the ground of the transformer core stacking production workshop, install the positioning stacking flipper on the foundation support frame, and connect the power supply, hydraulic power system and control system.

[0023] Step 2: The equipment is in the first position, with the gantry frame at a 90-degree angle to the foundation support frame. The first hydraulic cylinder of the frame holder extends, bringing the lifting frame closer to the positioning stacking and turning device. The second hydraulic cylinder of the frame holder extends, and the lifting frame rises to its limit position, supporting the bottom support frame.

[0024] Step 3: Place the empty transformer core stacking fixture on the positioning stacking flipper in the first position. Place the fixture base on the two support bars of the bottom support frame. The side clamps of the fixture rest on the clamping support. According to the design dimensions of the core, adjust the position of the two sliding square tubes laterally along the guide square tube so that they press against the side clamps. Then tighten the positioning bolts to fix the sliding square tubes.

[0025] Step 4: After the iron core is stacked and fixed, the second hydraulic cylinder of the support retracts, driving the lifting frame to descend. Then the first hydraulic cylinder of the support retracts, driving the entire lifting frame to move backward and away from the positioning stacking and flipping device.

[0026] Step 5: The rotary power unit operates, causing the shaft to rotate, and the portal frame drives the transformer core to rotate from the first position to the second position;

[0027] Step 6: The lifting AGV moves along the predetermined path, enters the first passage through the second passage gap, and finally stops directly below the vertical iron core. The lifting AGV then lifts the transformer iron core, passes through the first passage gap, then through the second passage gap, and finally leaves the equipment area completely, transporting the iron core to the next process.

[0028] Step 7: Return the equipment to its first position in preparation for the next operation.

[0029] This invention discloses a transformer core stacking and flipping device and its working method. The basic support frame and the frame holder can be installed in the factory area via threaded connections, facilitating equipment installation and subsequent position adjustments. Operation is simple. The stacking and flipping device and the frame holder are positioned in a first and second position. In the first position, the lifting frame lifts and supports the bottom support frame, fixing the portal frame laterally, facilitating core stacking by workers, reducing the load on the rotating power unit, protecting key components such as shafts and bearings, and extending equipment lifespan. In the second position, the portal frame flips to a vertical position, and the design of the first and second passage openings allows the passage of a lifting AGV vehicle and the transport of cores without waiting for hoisting, reducing production interruption time and improving production efficiency. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the first position of the transformer core stacking and flipping device according to the present invention from a main view angle.

[0031] Figure 2 This is a three-dimensional structural diagram of the second position rear view angle of the transformer core stacking and flipping device described in this invention;

[0032] Figure 3 This is a top-view three-dimensional structural diagram of the first position positioning stacking and flipping device of the transformer core stacking and flipping equipment described in this invention;

[0033] Figure 4 This is a three-dimensional structural diagram of the second position positioning stacking and flipping device of the transformer core stacking and flipping equipment described in this invention, viewed from a bottom angle.

[0034] Figure 5 This is a three-dimensional structural diagram of the second position support of the transformer core stacking and flipping device according to the present invention;

[0035] Figure 6 This is a side view of the second position of the transformer core stacking and flipping device according to the present invention;

[0036] Figure 7 This is a side view of the first position of the transformer core stacking and flipping device according to the present invention.

[0037] In the diagram: 1. Basic support frame; 11. Upright pole; 12. Bearing; 13. Fixed channel steel bar; 2. Portal frame; 3. Shaft; 4. Rotary power unit; 41. N-type support; 42. Servo motor; 43. Reducer; 44. Drive sprocket; 45. Driven sprocket; 46. Chain; 5. Bottom support frame; 51. Bottom bar; 52. Support bar; 53. Reinforcing rib; 54. First passage opening; 6. Clamping support; 61. Fixed square tube; 6 2. Guide square tube; 63. Sliding square tube; 64. Positioning bolt; 7. Avoidance power unit; 71. Main body fixing frame; 72. First hydraulic cylinder; 73. Bottom cross frame; 74. Connecting frame; 75. Roller; 76. Second guide rod; 77. Auxiliary fixing frame; 78. Second through hole; 8. Lifting frame; 81. Portal support frame; 82. First guide rod; 83. Lifting frame; 84. First through hole; 85. Second hydraulic cylinder; 9. Second passage opening. Detailed Implementation

[0038] Example 1:

[0039] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-7 As shown, a transformer core stacking and flipping device is used.

[0040] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0041] A transformer core stacking and flipping device includes a base support frame 1, a positioning stacking and flipping device is installed on the base support frame 1, and a frame holder is provided on one side of the base support frame and matched with the flipping device.

[0042] It should be noted that the basic support frame 1 and the frame holder are fixedly installed on the ground of the transformer core stacking production workshop according to the target placement position. The positioning stacking flipper is installed on the basic support frame 1 and connected to the power supply, hydraulic power system and control system. The control system can be a control panel with a built-in microcontroller. The microcontroller can be programmed with software. By writing the control program, the control operation of the device can be realized. Since it is existing technology, it will not be described in detail here.

[0043] Specifically, the positioning stacking and flipping device includes a portal frame 2, with shafts 3 fixedly installed on both sides of the portal frame 2. The portal frame 2 is movably installed on the base support frame 1 via the shafts 3. A rotating power unit 4 is installed at one end of the shafts 3. A bottom support frame 5 is provided at the end of the portal frame 2 near the frame holder. A first passage opening 54 is provided at the bottom support frame 5 and at the center of the portal frame 2. The first passage opening 54 is used for the passage of a lifting AGV vehicle. A clamping support 6 is installed on the side wall of the portal frame 2.

[0044] It should be noted that the portal frame 2, the bottom support frame 5 and the clamping support 6 are used to place the transformer core stacking fixture. Driven by the rotary power unit 4, the portal frame 2 rotates on the base support frame 1 through the shaft 3, thus driving the core stacking fixture to rotate. The first passage opening 54 allows the lifting AGV vehicle to pass along the line connecting the base support frame 1 and the holder.

[0045] Specifically, the support includes an obstacle avoidance power unit 7, which is located on one side near the bottom support frame 5. A lifting frame 8 is mounted on the obstacle avoidance power unit 7, and the lifting frame 8 is correspondingly arranged with the bottom support frame 5.

[0046] It should be noted that the lifting frame 8 can support or move away from the positioning stacking and flipping device by working, and the lifting frame 8 can move away from or closer to the positioning stacking and flipping device by working with the avoidance power unit 7.

[0047] Specifically, the positioning stacking flipper and the holder have a first position and a second position;

[0048] More specifically, in the first position, the portal frame 2 is set at a 90-degree angle to the base support frame 1, and the lifting frame 8 is close to the positioning stacking flipper in a lifting state. At this time, the bottom support frame 5 is movably attached to the lifting frame 8.

[0049] It should be noted that at this time, the avoidance power unit 7 makes the lifting frame 8 close to the positioning stacking and turning device, and the lifting frame 8 is supported on the bottom support frame 5. The gantry frame 2 is set at 90 degrees with the base support frame 1 and is used to support the iron core stacking fixture in the horizontal direction. The workers can stack iron cores on the horizontal iron core stacking fixture.

[0050] More specifically, in the second position, the portal frame 2 and the base support frame 1 are set parallel to each other, the clamping support 6 is movably attached to the portal frame 2, and the lifting frame 8 is in a retracted state away from the positioning stacking flipper. At this time, the gap between one end of the bottom support frame 5 and the lifting frame 8 is the second passage opening 9, which is used to pass through the top-lifting AGV vehicle.

[0051] It should be noted that after the iron core is stacked and fixed by the clamps, the lifting frame 8 descends away from the bottom support frame 5, then avoids the power unit 7 to move the lifting frame 8 away from the positioning stacking and turning device. Then, the rotating power unit 4 operates, causing the portal frame 2 to rotate at a constant speed until it is parallel to the base support frame 1. At this point, the transformer iron core stands vertically on the bottom support frame 5. A second passage opening 9 is formed between one end of the bottom support frame 5 and the lifting frame 8. This second passage opening 9 allows the lifting AGV vehicle to pass between the base support frame 1 and the lifting frame 8. Move to align with the first passage opening 54, and then move to the first passage opening 54 again. At this time, the lifting AGV vehicle is located below the transformer core. Then, the lifting AGV vehicle lifts the transformer core, and the transformer core leaves the bottom support frame 5 without contacting other parts of the positioning stacking and flipping device. Then, the lifting AGV vehicle moves along the first passage opening 54 to the second passage opening 9, and then moves to the side of the equipment at the second passage opening 9. It can then be transported to the next station. At this time, the equipment can perform the core stacking and flipping operation again without waiting for the transformer core to be hoisted on the equipment, thus improving work efficiency.

[0052] Specifically, the bottom support frame 5 includes two bottom strips 51, which are respectively installed at both ends of the portal frame 2. Each bottom strip 51 is equipped with a support strip 52, and the gap formed between the ends of the support strips 52 on each bottom strip 51 is the first passage opening 54.

[0053] It should be noted that the bottom strip 51 is used to install the support strip 52, the support strip 52 is used to place the base of the transformer core clamp, and the first passage gap 54 formed between the support strips 52 on both sides is used for the passage of the lifting AGV vehicle.

[0054] Specifically, the clamping support 6 includes two fixed square tubes 61, which are fixedly installed on the side wall of the portal frame 2. A guide square tube 62 is installed between the two fixed square tubes 61. Two sliding square tubes 63 are movably fitted on the guide square tube 62. A positioning bolt 64 is threadedly inserted into each of the two sliding square tubes 63, and one end of the positioning bolt 64 is movably attached to the guide square tube 62.

[0055] It should be noted that the two fixed square tubes 61 are used to support the side clamps of the transformer core. When initially fixing the side clamps of the transformer core, the two sliding square tubes 63 can be moved laterally along the guide square tube 62 according to the position of the side clamps. Then, the positioning bolt 64 is rotated so that one end of the positioning bolt 64 is pressed against the guide square tube 62 to generate friction, which is used to limit the relative position between the moving square tube and the guide square tube 62. The two are used to fix the position of the side clamps of the transformer core to prevent the side clamps of the transformer core from shifting, so as to facilitate the subsequent stacking of the core.

[0056] Specifically, the rotary power unit 4 includes an n-shaped support 41, which is located on the side of the portal frame 2 away from the bottom support frame 5. A servo motor 42 is mounted on the n-shaped support 41. A reducer 43 is mounted on the drive end of the servo motor 42. A drive sprocket 44 is fixedly mounted on the output end of the reducer 43. A driven sprocket 45 is fixedly mounted on the shaft 3. A chain 46 is movably mounted on the driven sprocket 45 and the drive sprocket 44.

[0057] It should be noted that the n-type support 41 can be fixedly installed on the ground of the workstation by threaded connectors such as expansion bolts. The servo motor 42 is a servo motor 42 with a power-off self-locking function. When the power is off, the drive end of the servo motor 42 cannot rotate. The reducer 43 is used to reduce the output end of the servo motor 42. When the servo motor 42 works, it drives the reducer 43 to rotate. The output end of the reducer 43 drives the drive sprocket 44 to rotate. Under the connection of the chain 46, the driven sprocket 45 rotates, and the shaft 3 rotates, causing the portal frame 2 to rotate. In actual work, the rotation angle of the servo motor 42 is designed according to the transmission ratio of the drive sprocket 44, the driven sprocket 45 and the reducer 43 so that the portal frame 2 rotates exactly 90 degrees. Since this is existing technology, it will not be described in detail here.

[0058] Specifically, the basic support frame 1 includes a vertical pole 11, and a shaft 3 is movably inserted into the vertical pole 11 through a bearing 12. A fixing channel steel bar 13 is installed at the bottom of the vertical pole 11.

[0059] It should be noted that the fixed channel steel bar 13 can be fixedly installed on the ground of the work station by threaded connectors such as expansion bolts, and the shaft 3 rotates on the upright 11 through the bearing 12 to ensure the smooth rotation of the shaft 3;

[0060] Specifically, the obstacle avoidance power unit 7 includes a main body fixing frame 71, which is set on one side of the foundation support frame 1. A first hydraulic cylinder 72 is fixedly inserted on the main body fixing frame 71. A bottom crossbar 73 is installed at the telescopic end of the first hydraulic cylinder 72. Connecting frames 74 are installed on both sides of the lower wall of the bottom crossbar 73. Rollers 75 are installed on both sides of the lower wall of the connecting frames 74.

[0061] It should be noted that the main body fixing frame 71 can be fixedly installed on the ground of the workstation by threaded connectors such as expansion bolts, and the connecting frame 74 is placed on the ground of the workstation by rollers 75. The connecting frame 74 is moved by the extension and retraction of the first hydraulic cylinder 72. The rollers 75 are used to move and support the connecting frame 74. When it is in the first position, the first hydraulic cylinder 72 is in the extended limit position state. When it is in the second position, the first hydraulic cylinder 72 is in the retracted limit position state.

[0062] Specifically, the lifting frame 8 includes a portal support frame 81, on which a plurality of first guide rods 82 are movably inserted. A lifting frame 83 is installed at one end of each of the first guide rods 82. A first through hole 84 is opened in the center of the portal support frame 81. A second hydraulic cylinder 85 is installed in the center of the upper wall of the bottom crossbar 73. The telescopic end of the second hydraulic cylinder 85 is movably inserted through the first through hole 84. The lifting frame 83 is installed at the telescopic end of the second hydraulic cylinder 85.

[0063] It should be noted that when in the first position, the second hydraulic cylinder 85 is in the extended limit position, and the lifting frame 83 is raised to the limit position. At this time, the lifting frame 83 is supported on the support bar 52 in the first position, which protects the rotating parts such as the rotary power unit 4, shaft 3 and bearing 12, extends the service life, and reduces the failure rate and maintenance cost of the equipment. When it is necessary to change to the second position, when the second hydraulic cylinder 85 retracts, the lifting frame 83 drives multiple first guide rods 82 to move on the portal support frame 81. A sliding bearing 12 is provided between the portal support frame 81 and each first guide rod 82 to assist the movement of the first guide rod 82.

[0064] Specifically, a second guide rod 76 is installed on the bottom crossbar 73, and the second guide rod 76 is movably inserted into the main body fixing frame 71. An auxiliary fixing frame 77 is also installed on the first hydraulic cylinder 72, and a second through hole 78 coaxial with the second guide rod 76 is opened on the auxiliary fixing frame 77.

[0065] It should be noted that the auxiliary fixing frame 77 can be fixedly installed on the ground of the workstation by threaded connectors such as expansion bolts. The auxiliary fixing frame 77 is used to support and install the first hydraulic cylinder 72. When the bottom crossbeam 73 moves, the second guide rod 76 moves on the main fixing frame 71. The second through hole 78 is used to avoid the second guide rod 76. A sliding bearing 12 is provided between the main fixing frame 71 and the second guide rod 76 to assist the movement of the second guide rod 76.

[0066] As a preferred and further option, multiple reinforcing ribs 53 are installed between the support strip 52 and the bottom strip 51 to provide support and protection at the connection point between the support strip 52 and the bottom strip 51.

[0067] Example 2:

[0068] A working method includes the following operational steps:

[0069] Step 1: Fix the base support frame 1 and the frame holder on the ground of the transformer core stacking production workshop, install the positioning stacking flipper on the base support frame 1, and connect the power supply, hydraulic power system and control system.

[0070] Step 2: The equipment is in the first position, the gantry frame 2 is at a 90-degree angle to the base support frame 1, the first hydraulic cylinder 72 of the frame holder extends, so that the lifting frame 8 is close to the positioning stacking and turning device, the second hydraulic cylinder 85 of the frame holder extends, and the lifting frame 83 rises to the limit position to support the bottom support frame 5.

[0071] Step 3: Place the empty transformer core stacking fixture on the positioning stacking flipper in the first position. Place the fixture base on the two support bars 52 of the bottom support frame 5. The side clamps of the fixture rest on the clamping support 6. According to the design dimensions of the core, adjust the position of the two sliding square tubes 63 laterally along the guide square tube 62 so that they abut against the side clamps. Then tighten the positioning bolts 64 to fix the sliding square tubes 63.

[0072] Step 4: After the iron core is stacked and fixed, the second hydraulic cylinder 85 of the support retracts, driving the lifting frame 83 to descend. Then the first hydraulic cylinder 72 of the support retracts, driving the entire lifting frame 8 to move backward and away from the positioning stacking and flipping device.

[0073] Step 5: The rotary power unit 4 operates, causing the shaft 3 to rotate, and the portal frame 2 drives the transformer core to rotate from the first position to the second position;

[0074] Step 6: The lifting AGV moves along the predetermined path, enters the first passage gap 54 through the second passage gap 9, and finally stops directly below the vertical iron core. The lifting AGV then lifts the transformer iron core, passes through the first passage gap 54, then through the second passage gap 9, and finally leaves the equipment area completely, transporting the iron core to the next process.

[0075] Step 7: Return the equipment to its first position in preparation for the next operation.

[0076] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A transformer core stacking and flipping device, comprising a base support frame (1), characterized in that, A positioning stacking flipper is installed on the basic support frame (1), and a frame holder is provided on one side of the basic support frame (1) that matches the flipper. The positioning stacking flipper includes a portal frame (2), and shafts (3) are fixedly installed on both sides of the portal frame (2). The portal frame (2) is movably installed on the base support frame (1) through the shafts (3). A rotating power unit (4) is installed at one end of the shaft (3). A bottom support frame (5) is provided at one end of the portal frame (2) near the frame holder. The bottom support frame (5) includes two bottom strips (51). The two bottom strips (51) are respectively installed at both ends of the portal frame (2). Each bottom strip (51) is equipped with a support strip (52). The gap formed between the ends of the support strips (52) on each bottom strip (51) is a first passage opening (54). The first passage opening (54) is used for the passage of the top-lifting AGV vehicle. A clamping support (6) is installed on the side wall of the portal frame (2). The frame holder includes an obstacle avoidance power unit (7), which is located on one side near the bottom support frame (5). A lifting frame (8) is installed on the obstacle avoidance power unit (7), and the lifting frame (8) is correspondingly arranged with the bottom support frame (5). The positioning stacking flipper and the holder have a first position and a second position; The first position is where the portal frame (2) and the base support frame (1) are set at 90 degrees, and the lifting frame (8) is close to the positioning stacking flipper in a lifting state. At this time, the bottom support frame (5) is movably attached to the lifting frame (8). The second position is that the portal frame (2) and the base support frame (1) are arranged in parallel. The clamping support (6) is movably attached to the portal frame (2), and the lifting frame (8) is in a retracted state away from the positioning stacking flipper. At this time, the gap between one end of the bottom support frame (5) and the lifting frame (8) is the second passage opening (9). The second passage opening (9) is used to pass through the top-lifting AGV vehicle.

2. The transformer core stacking and flipping device according to claim 1, characterized in that, The clamping support (6) includes two fixed square tubes (61), which are fixedly installed on the side wall of the portal frame (2). A guide square tube (62) is installed between the two fixed square tubes (61). Two sliding square tubes (63) are movably fitted on the guide square tube (62). A positioning bolt (64) is threadedly inserted into each of the two sliding square tubes (63). One end of the positioning bolt (64) is movably attached to the guide square tube (62).

3. The transformer core stacking and flipping device according to claim 2, characterized in that, The rotating power unit (4) includes an n-shaped support (41), which is located on the side of the portal frame (2) away from the bottom support frame (5). A servo motor (42) is installed on the n-shaped support (41), and a reducer (43) is installed on the drive end of the servo motor (42). A drive sprocket (44) is fixedly mounted on the output end of the reducer (43). A driven sprocket (45) is fixedly mounted on the shaft (3), and a chain (46) is movably mounted on the driven sprocket (45) and the drive sprocket (44).

4. The transformer core stacking and flipping device according to claim 3, characterized in that, The basic support frame (1) includes a pole (11), and the shaft (3) is movably inserted into the pole (11) through a bearing (12). A fixed channel steel bar (13) is installed at the bottom of the pole (11).

5. A transformer core stacking and flipping device according to claim 4, characterized in that, The avoidance power unit (7) includes a main body fixing frame (71), which is located on one side of the base support frame (1). A first hydraulic cylinder (72) is fixedly inserted on the main body fixing frame (71). A bottom crossbar (73) is installed on the telescopic end of the first hydraulic cylinder (72). Connecting frames (74) are installed on both sides of the lower wall of the bottom crossbar (73). Rollers (75) are installed on both sides of the lower wall of the connecting frame (74).

6. A transformer core stacking and flipping device according to claim 5, characterized in that, The lifting frame (8) includes a portal support frame (81), on which a plurality of first guide rods (82) are movably inserted. A lifting frame (83) is installed at one end of the plurality of first guide rods (82). A first through hole (84) is opened in the center of the portal support frame (81). A second hydraulic cylinder (85) is installed in the center of the upper wall of the bottom crossbar (73). The telescopic end of the second hydraulic cylinder (85) is movably inserted through the first through hole (84). The lifting frame (83) is installed on the telescopic end of the second hydraulic cylinder (85).

7. A transformer core stacking and flipping device according to claim 6, characterized in that, A second guide rod (76) is installed on the bottom crossbar (73). The second guide rod (76) is movably inserted into the main body fixing frame (71). An auxiliary fixing frame (77) is also installed on the first hydraulic cylinder (72). A second through hole (78) coaxial with the second guide rod (76) is opened on the auxiliary fixing frame (77).

8. A transformer core stacking and flipping device according to claim 7, characterized in that, Multiple reinforcing ribs (53) are installed between the support strip (52) and the bottom strip (51).

9. A method of operation, applied to the device as described in claim 8, characterized in that, The following steps are included: Step 1: Fix the base support frame (1) and the frame holder on the ground of the transformer core stacking production workshop, install the positioning stacking flipper on the base support frame (1), and connect the power supply, hydraulic power system and control system; Step 2: The equipment is in the first position, the portal frame (2) is at a 90-degree angle to the base support frame (1), the first hydraulic cylinder (72) of the frame holder extends, so that the lifting frame (8) is close to the positioning stacking flipper, the second hydraulic cylinder (85) of the frame holder extends, and the lifting frame (83) rises to the limit position to support the bottom support frame (5). Step 3: Place the empty transformer core stacking fixture on the positioning stacking flipper in the first position. Place the fixture base on the two support bars (52) of the bottom support frame (5). The side clamps of the fixture rest on the clamping support (6). According to the design size of the core, adjust the position of the two sliding square tubes (63) laterally along the guide square tube (62) so that they press against the side clamps. Then tighten the positioning bolts (64) to fix the sliding square tubes (63). Step 4: After the iron core is stacked and fixed, the second hydraulic cylinder (85) of the holder retracts, driving the lifting frame (83) to descend. Then the first hydraulic cylinder (72) of the holder retracts, driving the entire lifting frame (8) to move backward and away from the positioning stacking flipper. Step 5: The rotary power unit (4) operates, causing the shaft (3) to rotate, and the portal frame (2) drives the transformer core to rotate from the first position to the second position; Step 6: The lifting AGV vehicle drives along the predetermined path, through the second passage gap (9) into the first passage gap (54), and finally stops directly below the vertical iron core. The lifting AGV vehicle performs a lifting action to lift the transformer iron core, and then passes through the first passage gap (54) and then through the second passage gap (9) to completely leave the equipment area and transport the iron core to the next process. Step 7: Return the equipment to its first position in preparation for the next operation.

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