Production and processing device for oil-immersed transformer

Abstract

The invention relates to the technical field of transformer production, and particularly discloses an oil-immersed transformer production and processing device which comprises a first protective sleeve, a second protective sleeve, a first fixing sleeve and a second fixing sleeve, containing cavities are formed in the bottoms of the first protective sleeve and the second protective sleeve, and a first baffle is slidably connected to the bottom of the first protective sleeve; the bottom of the second protective sleeve is slidably connected with a second baffle, the baffle is pushed after a set of steel sheets are bent, and the ends of the steel sheets fall down in sequence. According to the oil-immersed transformer producing and machining device, the ends of the steel sheets are wrapped and bent through the pair of protective sleeves, the distance between the ends of the steel sheets is increased, the steel sheets can fall down in sequence, the first baffle is controlled to slide according to the path with the set length, a set of steel sheets fall down in sequence, and the production efficiency is improved. And through the driving component and the transmission component, the other group of steel sheets can fall off immediately when one of the previous group of steel sheets falls off, so that the aim of alternately falling off is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer production, and particularly relates to a production and processing device for oil-immersed transformers. Background Art

[0002] During the production of transformers, multiple steel sheets need to be stacked to make the transformer core. The process of stacking transformer steel sheets (usually silicon steel sheets) is crucial for the performance of the transformer, mainly to ensure that the core can effectively conduct magnetic flux and minimize energy loss.

[0003] In traditional steel sheet stacking, each steel sheet is manually stacked in sequence. For adjacent pairs of steel sheets, partial overlap can effectively optimize the performance of the transformer, reduce losses, and improve efficiency, which is an important detail in transformer design. In this regard, through querying information, we found that a few manufacturers also use special equipment such as automatic laminators for steel sheet stacking. However, since it requires the use of many electrical equipment, such as: conveying systems, positioning systems, stacking systems, control systems, etc., the upfront purchase, installation, and subsequent maintenance make the cost of this device too high. Moreover, its actual operation is controlled by precise logical operations, and the work process is also strictly in accordance with the requirement that one good sheet must be placed before another can be placed, resulting in poor work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a production and processing device for oil-immersed transformers to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A production and processing device for oil-immersed transformers includes a first protective sleeve, a second protective sleeve, a first fixing sleeve, and a second fixing sleeve. The bottoms of the first protective sleeve and the second protective sleeve are provided with receiving cavities for receiving the ends of the steel sheets. A first baffle is slidably connected to the bottom of the first protective sleeve, and a second baffle is slidably connected to the bottom of the second protective sleeve. After bending a group of steel sheets and pushing the baffles, the ends of the steel sheets will fall in sequence. An unlocking component is provided on the first protective sleeve. The unlocking component includes a plurality of first limit blocks. A fixing plate is fixedly connected to the bottom of the first protective sleeve, and an elastic member is fixedly connected between the fixing plate and the first baffle. The unlocking component is used to control the plurality of first limit blocks to sequentially disengage from the first baffle, so that the first baffle moves the same path each time. A driving component is provided on the second protective sleeve. The driving component includes a plurality of second limit blocks. A transmission component is provided between the first protective sleeve and the second protective sleeve. The transmission component is used to immediately drive the second limit blocks to fall after the first limit blocks fall, so that the second baffle slides a set distance closely following the first baffle to complete the alternating stacking of two groups of steel sheets.

[0007] Further, the unlocking component further includes rollers. A pair of first grooves are formed in the first protective sleeve. The rollers roll in the first grooves. An elastic rope is arranged between the rollers and the first protective sleeve. A plurality of first telescopic members evenly distributed are arranged inside the first grooves. The first limiting plate is arranged on the first telescopic members. The rollers roll under the elastic force of the elastic rope, driving the first telescopic members to contract in sequence, and completing the sequential downward movement of the first limiting blocks.

[0008] Further, the driving component further includes a plurality of driving blocks. A pair of second grooves are formed in the second protective sleeve. A plurality of second telescopic members evenly distributed are arranged on the pair of second grooves. An air storage pipe is fixedly connected to the second protective sleeve. A plurality of the driving blocks slide on one side of the air storage pipe and are used to move under the pressure of fluid, driving the second telescopic members to contract.

[0009] Further, a plurality of sealing partitions arranged evenly are fixedly connected inside the air storage pipe. First air holes are formed in the sealing partitions. Second air holes are formed in the driving blocks. An air inlet hole is formed in the outer side of the air storage pipe near the end. After the driving blocks move a set distance, the first air holes are aligned with the second air holes, completing the communication of adjacent chambers.

[0010] Further, the transmission component includes a multi-stage telescopic rod. A sealing plate is fixedly connected inside the multi-stage telescopic rod. The multi-stage telescopic rod connects the fixed plate and the first baffle. The bottom of the second protective sleeve is fixedly connected with an air storage box. A hose is fixedly connected between the air storage box and the multi-stage telescopic rod. An air inlet pipe is fixedly connected between the air storage box and the air storage pipe. When the baffle moves, it squeezes the multi-stage telescopic rod, enabling the gas inside it to enter the air storage box, causing a plurality of driving blocks to slide in sequence.

[0011] Further, the first telescopic member includes a first hollow box. A first mesh plate is slidably connected inside the hollow box. The top of the first mesh plate is fixedly connected with a first moving rod and a second moving rod. The top of the first moving rod is fixedly connected with the first limiting block. The top of the second moving rod is fixedly connected with a first unlocking block.

[0012] Further, a roller shaft is fixedly connected to the side end of the roller. A guiding slider is rotatably connected to the end of the roller shaft. A guiding chute is formed at the bottom of the first protective sleeve. Under the action of the elastic rope, the guiding slider slides in the guiding chute, sequentially squeezing the first unlocking block.

[0013] Further, the second telescopic member includes a second hollow box, a second net plate is slidably connected inside the second hollow box, a first sliding rod and a second sliding rod are fixedly connected to the top of the second net plate, the first sliding rod is fixedly connected to the second unlocking block, the top of the second sliding rod is fixedly connected to the second unlocking block, and during the movement of the driving block, the second unlocking block is pressed.

[0014] Further, a rack plate is fixedly connected to the bottom surface of the first protective sleeve, a driving wheel is fixedly sleeved outside the roller, and the driving wheel rolls on the rack plate to keep the roller in a rolling state.

[0015] In the above technical solution, the beneficial effects of the oil-immersed transformer production and processing device provided by the present invention are as follows:

[0016] In this case, a pair of protective sleeves are used to wrap the ends of the steel sheets and bend them, so that the distance between the ends of the steel sheets is increased, which is beneficial to the sequential dropping of the steel sheets. By controlling the first baffle to slide along a set long path, a group of steel sheets are dropped orderly, and through the driving component and the transmission component, another group of steel sheets will drop immediately when one of the previous group of steel sheets drops, achieving the purpose of alternating dropping. In this case, by superimposing the ends of the two groups of steel sheets, the time for superimposing the two groups of steel sheets is shortened, and it can be effectively ensured that the two groups of steel sheets can drop alternately.

[0017] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall bottom view structure provided by an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the bottom view structure of the first protective sleeve and the second protective sleeve provided by an embodiment of the present invention;

[0023] Figure 4Provided by an embodiment of the present invention Figure 3 Schematic enlarged view of part A;

[0024] Figure 5 Provided by an embodiment of the present invention Figure 3 Schematic enlarged view of part B;

[0025] Figure 6 Schematic cross-sectional view of the gas storage pipe provided by an embodiment of the present invention;

[0026] Figure 7 Schematic view of the structure when the driving block moves provided by an embodiment of the present invention;

[0027] Figure 8 Schematic cross-sectional view of the first hollow box provided by an embodiment of the present invention;

[0028] Figure 9 Schematic view of the internal structure of the multi-stage telescopic rod provided by an embodiment of the present invention.

[0029] Explanation of reference numerals:

[0030] 1. First protective sleeve; 2. Second protective sleeve; 3. First fixing sleeve; 4. Second fixing sleeve; 5. First baffle; 6. Second baffle; 7. Unlocking component; 71. First limiting block; 72. Fixed plate; 73. Elastic member; 74. Roller; 75. First groove; 76. Elastic rope; 77. First telescopic member; 771. First hollow box; 772. First moving rod; 773. Second moving rod; 774. First unlocking block; 78. Roller shaft; 79. Guide slider; 8. Driving component; 81. Driving block; 82. Second groove; 83. Second telescopic member; 831. Second hollow box; 832. First sliding rod; 833. Second sliding rod; 834. Second unlocking block; 84. Gas storage pipe; 85. Sealing partition; 86. First air hole; 87. Second air hole; 88. Second limiting block; 9. Transmission component; 91. Multi-stage telescopic rod; 911. Second hollow rod; 912. First hollow rod; 913. Thrust rod; 92. Sealing plate; 93. Gas storage tank; 94. Hose; 95. Air inlet pipe; 10. Accommodation cavity. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Please refer to Figures 1-9, an oil-immersed transformer production and processing device, including a first protective sleeve 1, a second protective sleeve 2, a first fixing sleeve 3 and a second fixing sleeve 4. The bottoms of the first protective sleeve 1 and the second protective sleeve 2 are provided with receiving cavities 10 for receiving the ends of steel sheets. A first baffle 5 is slidably connected to the bottom of the first protective sleeve 1, and a second baffle 6 is slidably connected to the bottom of the second protective sleeve 2. After bending a group of steel sheets and pushing the baffle, the ends of the steel sheets will fall in sequence; an unlocking component 7 is provided on the first protective sleeve 1, and the unlocking component 7 includes a plurality of first limit blocks 71. A fixing plate 72 is fixedly connected to the bottom of the first protective sleeve 1, and an elastic member 73 is fixedly connected between the fixing plate 72 and the first baffle 5. The elastic member 73 can be an elastic rope with a large elastic force. The unlocking component 7 is used to control the plurality of first limit blocks 71 to sequentially disengage from the first baffle 5, so that the first baffle 5 moves along the same path each time; a driving component 8 is provided on the second protective sleeve 2, and the driving component 8 includes a plurality of second limit blocks 88. A transmission component 9 is provided between the first protective sleeve 1 and the second protective sleeve 2. The transmission component 9 is used to immediately drive the second limit blocks 88 to fall through the driving component 8 after the first limit blocks 71 fall, so that the second baffle 6 slides a set distance closely following the first baffle 5 to complete the alternating stacking of two groups of steel sheets.

[0033] First, place the above device on the workbench, and then put the pointed ends of a group of steel sheets (taking trapezoidal steel sheets as an example in this case) into the first protective sleeve 1. The steel sheets are divided into various specifications and sizes. Each size of steel sheet includes four groups, with 6 - 10 in each group, forming a square. Different sizes of steel sheets can make the edges formed by the overlapping of multiple groups of steel sheets form a similar cylindrical shape, which is convenient for the fabric and fiber materials to fit and makes the winding tighter.

[0034] Adjacent groups of steel sheets need to partially overlap, and the overlapping area is 5% - 10%. The purpose is to reduce eddy current losses, improve magnetic flux conduction, reduce core losses, and reduce current eddy current loops. Therefore, the stacking of steel sheets is crucial.

[0035] Specifically, a snap structure is provided between the first fixing sleeve 3 and the second fixing sleeve 4 and the workbench. During actual operation, the first fixing sleeve 3 and the second fixing sleeve 4 are snapped onto the workbench (after the steel sheets are placed).

[0036] After placing the steel sheets, install the first fixing sleeve 3. Similarly, put another group of steel sheets on the second protective sleeve 2 and install the second fixing sleeve 4. Lift the ends of the steel sheets together with the first protective sleeve 1 and the second protective sleeve 2, and push the first baffle 5 respectively to achieve the stacking of the ends of the steel sheets. Subsequently, manually adjust the specific positions of each group of steel sheets.

[0037] In a further embodiment provided by the present invention, the unlocking member 7 includes a roller 74. A pair of first grooves 75 are formed in the first protective sleeve 1. The roller 74 rolls in the first grooves 75. An elastic cord 76 is arranged between the roller 74 and the first protective sleeve 1. A plurality of first telescopic members 77 evenly distributed are arranged inside the first grooves 75. The first limiting plate is arranged on the first telescopic members 77. The roller 74 rolls under the elastic force of the elastic cord 76, driving the first telescopic members 77 to contract in sequence, and completing the sequential downward movement of the first limiting block 71.

[0038] The first telescopic member 77 includes a first hollow box 771. A first mesh plate is slidably connected inside the hollow box. A return spring with relatively small elasticity is fixedly connected between the first mesh plate and the inner bottom surface of the hollow box. The top of the first mesh plate is fixedly connected with a first moving rod 772 and a second moving rod 773. The top of the first moving rod is fixedly connected with the first limiting block 71. The top of the second moving rod 773 is fixedly connected with a first unlocking block 774, and the side end is an arc surface.

[0039] A roller shaft 78 is fixedly connected to the side end of the roller 74. The end of the roller shaft 78 is rotatably connected with a guiding slider 79. A guiding chute is formed at the bottom of the first protective sleeve 1. Under the action of the elastic cord 76, the guiding slider 79 slides in the guiding chute, sequentially completing the extrusion of the first unlocking block 774.

[0040] Specifically, a locking block is arranged outside the guiding slider 79. The locking block is slidably connected to the bottom surface of the first protective sleeve 1 and is located on one side of the guiding slider 79. When the locking block is pushed to slide, the guiding slider 79 loses the blockage of the locking block and will move under the pulling force of the elastic cord 76. During the movement, the roller 74 is driven to move, pressing the first unlocking block 774 with an arc-shaped side end, causing the second moving rod to drive the mesh plate to descend, and the mesh plate drives the first moving rod to move downward, so that the first limiting block 71 disengages from the first baffle 5, and the first baffle 5 moves down to the next first baffle 5.

[0041] Specifically, when the guiding slider 79 moves down to the end, the elastic cord 76 has not yet returned to its original length and still has elasticity, that is, during the process of the shortening of the length of the elastic cord 76, the elastic force is always sufficient to press each first unlocking block 774.

[0042] Optionally, the pushing of the above-mentioned first baffle 5 can also be replaced by manual pushing.

[0043] In an embodiment further provided by the present invention, the driving component 8 includes a plurality of driving blocks 81. A pair of second grooves 82 are formed on the second protective sleeve 2. A plurality of second telescopic members 83 evenly distributed are arranged on the pair of second grooves 82. A gas storage pipe 84 is fixedly connected to the second protective sleeve 2. A plurality of the driving blocks 81 slide on one side of the gas storage pipe 84 and are used to move under the pressure of fluid to drive the second telescopic members 83 to contract.

[0044] The second telescopic member 83 includes a second hollow box 831. A second net plate is slidably connected inside the second hollow box 831. A first sliding rod 832 and a second sliding rod 833 are fixedly connected to the top of the second net plate. The first sliding rod 832 is fixedly connected to the second unlocking block 834. The top of the second sliding rod 833 is fixedly connected to the second unlocking block 834. During the movement of the driving block 81, the second unlocking block 834 is pressed.

[0045] In a further solution provided by the present invention, a plurality of sealing partitions 85 arranged evenly are fixedly connected inside the gas storage pipe 84. A first air hole 86 is formed on the sealing partition 85. A second air hole 87 is formed on the driving block 81. An air inlet hole is formed on the outer side of the gas storage pipe 84 near the end. After the driving block 81 moves a set distance, the first air hole 86 is aligned with the second air hole 87 to complete the communication of adjacent chambers.

[0046] Specifically, the sealing partition 85 divides the inside of the gas storage pipe 84 into multiple chambers. The chambers are not connected initially. When gas enters the first chamber, it pushes the driving block 81 to move. After the driving block 81 moves to the end, the first air hole 86 is aligned with the second air hole 87. Then the gas will enter the second chamber, and so on, so that a plurality of driving blocks 81 can slide in sequence, realizing that the second baffle 6 slides at a set length each time.

[0047] In the present invention, the transmission component 9 includes a multi-stage telescopic rod 91. A sealing plate 92 is fixedly connected inside the multi-stage telescopic rod 91. The multi-stage telescopic rod 91 connects the fixed plate 72 and the first baffle 5. A gas storage tank 93 is fixedly connected to the bottom of the second protective sleeve 2. A hose 94 is fixedly connected between the gas storage tank 93 and the multi-stage telescopic rod 91. An air inlet pipe 95 is fixedly connected between the gas storage tank 93 and the gas storage pipe 84. When the baffle moves, it squeezes the multi-stage telescopic rod 91 to make the gas inside it enter the gas storage tank 93, so that a plurality of driving blocks 81 slide in sequence.

[0048] Specifically, the multi-stage telescopic rod 91 includes a top rod 913, a first hollow rod 912, and a second hollow rod 911. The end of the top rod 913 is fixedly connected to the sealing plate 92, and the outside of the first hollow rod 912 near the end is also fixedly connected to the sealing plate 92. A stop block is fixedly connected to the inner wall of the first hollow rod 912. The top rod 913 slides inside the first hollow rod 912 and finally drives the first hollow rod 912 to slide inside the second hollow rod 911.

[0049] Optionally, the multi-stage telescopic rod 91 can also be a telescopic rod with four or more stages.

[0050] During the process of the first baffle 5 sliding between the first first limit block 71 and the second first limit block 71, at the moment when the first baffle 5 starts to slide, the first steel sheet of the first group has already fallen. At this time, gas successively enters the inside of the gas storage pipe 84 from the multi-stage telescopic pipe, the hose 94, the gas storage tank 93, and the air inlet pipe 95. By the air pressure, the first driving block 81 is pushed to move (that is, at the moment when the first steel sheet of the first group falls and the driving block 81 is still moving, and the second baffle 6 has not slid yet. After the driving block 81 moves to the end), the first second unlocking block 834 moves downward, and then drives the second limit block 88 to move until it disengages from the second baffle 6, causing the second baffle 6 to start sliding. The first steel sheet of the second group falls and covers the steel sheets of the first group to achieve the purpose of stacking; that is, after the steel sheets of the first group fall, another group of steel sheets is triggered to fall immediately, and then the steel sheets of the first group are triggered to fall continuously. Repeating like this, the stacking of two groups of steel sheets can be completed within one minute, and both the stacking rate and the working efficiency are significantly improved.

[0051] Specifically, a long strip-shaped air outlet groove is opened on the side end of the gas storage pipe 84. A sliding plate is slidably connected to the air storage groove. When it needs to be restored later, the sliding plate is pushed open, and multiple second unlocking blocks 834 move upward and push the driving block 81 to move to the initial position. Then the sliding plate is slid to block the air groove.

[0052] The caliber sizes of all the air holes and pipes in this case are set to be similar sizes, that is, the caliber size of the air inlet end is equal to the caliber size of the air outlet end, so as to reduce the kinetic energy loss caused by air pressure buffering.

[0053] Optionally, a rack plate is fixedly connected to the bottom surface of the first protective sleeve 1. A driving wheel is fixedly sleeved on the outside of the roller 78. The driving wheel rolls on the rack plate to keep the roller 74 in a rolling state.

[0054] In order to reduce the influence brought by friction, by designing the rack plate and the driving wheel, the roller 74 can be changed from sliding to rolling, thereby reducing the friction caused by contacting the arc surface of the first unlocking block 774.

[0055] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An oil-immersed transformer production and processing device, characterized in that: It includes a first protective cover, a second protective cover, a first fixed cover and a second fixed cover. The bottoms of the first protective cover and the second protective cover are provided with a receiving cavity for receiving the ends of the steel sheets. The bottom of the first protective cover is slidably connected with a first baffle plate. The bottom of the second protective cover is slidably connected with a second baffle plate. After a group of steel sheets are bent and the baffle plate is pushed, the ends of the steel sheets will fall down in sequence. The first protective cover is provided with an unlocking component, the unlocking component includes a plurality of first limit blocks, a fixing plate is fixedly connected to the bottom of the first protective cover, an elastic member is fixedly connected between the fixing plate and the first baffle, and the unlocking component is used to control the plurality of first limit blocks to sequentially detach from the first baffle, so that the first baffle moves the same path each time; The second protective cover is provided with a driving component, which includes a plurality of second limit blocks. A transmission component is provided between the first protective cover and the second protective cover. The transmission component is used to drive the second limit block to fall immediately after the first limit block falls, so that the second baffle slides a set distance closely following the first baffle, thereby completing the alternating superposition of the two groups of steel sheets.

2. The oil-immersed transformer production and processing device according to claim 1 is characterized in that: The unlocking component also includes a roller. A pair of first grooves are formed on the first protective cover. The roller rolls in the first grooves. An elastic rope is arranged between the roller and the first protective cover. A plurality of evenly distributed first telescopic parts are arranged inside the first groove. The first limiting plate is arranged on the first telescopic part. The roller rolls under the elastic force of the elastic rope, driving the first telescopic parts to contract sequentially, thereby completing the sequential downward movement of the first limiting block.

3. The oil-immersed transformer production and processing device according to claim 2 is characterized in that: The driving component also includes multiple driving blocks. A pair of second grooves are opened on the second protective cover. A plurality of evenly distributed second telescopic parts are arranged on the pair of second grooves. An air storage pipe is fixedly connected to the second protective cover. The multiple driving blocks slide on one side of the air storage pipe to move under the pressure of the fluid to drive the second telescopic parts to contract.

4. The oil-immersed transformer production and processing device according to claim 3 is characterized in that: The inside of the gas storage tube is fixedly connected with a plurality of evenly arranged sealing baffles, the sealing baffle is provided with a first air hole, the driving block is provided with a second air hole, and the outer side of the gas storage tube near the end is provided with an air inlet hole. After the driving block moves a set distance, the first air hole is aligned with the second air hole to complete the connection between adjacent chambers.

5. The oil-immersed transformer production and processing device according to claim 4 is characterized in that: The transmission component includes a multi-stage telescopic rod, a sealing plate is fixedly connected inside the multi-stage telescopic rod, the multi-stage telescopic rod connects the fixed plate with the first baffle, the bottom of the second protective cover is fixedly connected with an air storage box, a hose is fixedly connected between the air storage box and the multi-stage telescopic rod, an air intake pipe is fixedly connected between the air storage box and the air storage pipe, and when the baffle moves, the multi-stage telescopic rod is squeezed to allow the internal gas to enter the air storage box, so that the multiple driving blocks slide in sequence.

6. The oil-immersed transformer production and processing device according to claim 5 is characterized in that: The first telescopic member includes a first hollow box, the interior of the hollow box is slidably connected to a first mesh plate, the top of the first mesh plate is fixedly connected to a first moving rod and a second moving rod, the top of the first movable rod is fixedly connected to a first limiting block, and the top of the second moving rod is fixedly connected to a first unlocking block.

7. The oil-immersed transformer production and processing device according to claim 6 is characterized in that: The side end of the roller is fixedly connected to a roller, the end of the roller is rotatably connected to a guide slider, and a guide slot is provided at the bottom of the first protective cover. Under the action of the elastic rope, the guide slider slides in the guide slot to sequentially squeeze the first unlocking block.

8. The oil-immersed transformer production and processing device according to claim 7 is characterized in that: The second telescopic member includes a second hollow box, the interior of the second hollow box is slidably connected to a second mesh plate, the top of the second mesh plate is fixedly connected to a first sliding rod and a second sliding rod, the first sliding rod is fixedly connected to a second unlocking block, the top of the second sliding rod is fixedly connected to a second unlocking block, and the second unlocking block is pressed during the movement of the driving block.

9. The oil-immersed transformer production and processing device according to claim 7, characterized in that: The bottom surface of the first protective cover is fixedly connected with a rack plate, and the outer portion of the roller is fixedly sleeved with a driving wheel, and the driving wheel rolls on the rack plate to keep the roller in a rolling state.

Images