A box-type combined transformer

Abstract

The application is suitable for the technical field of transformers, and provides a box combined transformer, which comprises a box combined transformer body comprising a mounting chamber, a transformer is arranged in the mounting chamber, a first bottom plate is arranged below the transformer, a detachable second bottom plate is arranged on the top of the first bottom plate, the top of the second bottom plate is welded to the bottom of the transformer, a plurality of positioning holes are arranged in the second bottom plate and the first bottom plate near the positions of the two side edges, and a plurality of supporting rods are welded to the inner wall of one side of the mounting chamber. The box combined transformer provided by the scheme solves the problem that the existing box combined transformer needs to be regularly fastened by bolts and nuts to ensure that the transformer is stable in the box, thereby the problem that the working strength of the operation and maintenance personnel is large exists.

Description

Technical Field

[0001] This invention belongs to the field of transformer technology, and particularly relates to a box-type combined transformer. Background Technology

[0002] A box-type combined transformer integrates multiple functional units into a single box. The box is generally made of steel plate or alloy material and has good sealing and protection performance.

[0003] Currently, transformers inside box-type modular transformers are generally secured to the box with bolts and nuts. This ensures structural stability during operation and facilitates disassembly and maintenance. However, during operation, the transformer's core and windings experience continuous periodic micro-vibrations under the influence of alternating electromagnetic fields. These vibrations continuously apply cyclic mechanical stress to the bolts and nuts, easily causing loosening at the bolt and nut connections. To prevent significant loosening of fasteners and subsequent malfunctions, maintenance personnel must periodically tighten the bolts and nuts, resulting in a heavy workload for them. Summary of the Invention

[0004] This invention provides a box-type modular transformer, which aims to solve the problem mentioned in the background art that existing box-type modular transformers require regular tightening of bolts and nuts to ensure the transformer remains stable inside the box, resulting in a high workload for maintenance personnel.

[0005] To solve the above problems, the present invention is implemented as follows: a box-type combined transformer, comprising: a box-type combined transformer body including an installation chamber, wherein a transformer is disposed inside the installation chamber, a first base plate is disposed below the transformer, a detachable second base plate is disposed on the top of the first base plate, the top of the second base plate is welded to the bottom of the transformer, and multiple positioning holes are provided near the side edges of both the second base plate and the first base plate; multiple support rods welded to the inner wall of one side of the installation chamber; multiple support blocks slidably mounted on the multiple support rods, the tops of the multiple support blocks being fixedly connected to the bottom of the first base plate; multiple support plates welded to the inner walls of both sides of the installation chamber, each of the multiple support plates having a connecting column slidably mounted thereon, the top of the multiple connecting columns having the same U-shaped plate welded thereon, the U-shaped plate being located outside the transformer; and multiple connecting plates welded to the bottom ends of the multiple connecting columns, the tops of the multiple connecting plates having two third [unclear] fixedly mounted thereon. The system includes: springs, with the top ends of multiple third springs fixedly connected to the bottoms of multiple support plates; multiple first through holes formed in the first and second base plates; multiple bolts respectively disposed within the multiple first through holes, each bolt having a hexagonal head fixedly mounted at its bottom end; multiple internal hexagonal sleeves fixedly mounted on the bottom of the first base plate to block the edges of the hexagonal heads, the inner sides of the multiple internal hexagonal sleeves respectively contacting the edges of the multiple hexagonal heads; multiple hexagonal nuts respectively threaded onto the multiple bolts to fix the first and second base plates, the bottoms of the multiple hexagonal nuts contacting the top of the second base plate; two hinge seats welded to the top of the second base plate, with the same handrail hinged to the two hinge seats, the handrail being provided with a prying assembly for pushing up the U-shaped plate; two position locking mechanisms symmetrically installed in the mounting cavity to lock the first and second base plates in a horizontal position; and multiple anti-loosening mechanisms respectively assembled on the multiple connecting plates to fix the hexagonal nuts.

[0006] Preferably, the position locking mechanism includes: a plurality of sliding rods welded to the inner wall of the bottom of the mounting chamber, a common movable plate slidably mounted on the plurality of sliding rods, a plurality of positioning rods welded to the top of the movable plate, and the plurality of positioning rods respectively adapting to the plurality of positioning holes; a crossbar welded between the two connecting plates, a first rack fixedly mounted at the bottom of the crossbar; a U-shaped frame welded to the inner wall of the mounting chamber, a first rotating shaft rotatably mounted on the U-shaped frame, a gear fixedly sleeved on the first rotating shaft, the gear meshing with the first rack; and a second rack welded to one side of the movable plate, the second rack meshing with the gear.

[0007] Preferably, the anti-loosening mechanism includes: a housing fixedly installed on one side of the connecting plate, a plurality of stop bars slidably installed on the housing, a first spring fixedly installed at the top of each of the plurality of stop bars, and the top of each of the plurality of first springs fixedly connected to the top inner wall of the housing.

[0008] Preferably, both sides of the plurality of support blocks are welded with first triangular steel for supporting the first base plate, and the top of the plurality of first triangular steels is fixedly connected to the bottom of the first base plate.

[0009] Preferably, a rectangular plate is welded to one side of the transformer, and a pin is slidably mounted on the rectangular plate. The pin is adapted to a pin hole on the handrail, and a pull ring is fixedly mounted on the top of the pin.

[0010] Preferably, a plurality of reinforcing plates for supporting the support rods are fixedly installed on the bottom inner wall of the installation chamber, and one side of each of the plurality of reinforcing plates is fixedly connected to one end of the plurality of support rods.

[0011] Preferably, a second triangular steel and a third triangular steel are fixedly installed on the sides of the first rack and the second rack that are far apart from each other, respectively. The top of the second triangular steel is fixedly connected to the bottom of the crossbar, and the bottom of the third triangular steel is fixedly connected to the top of the movable plate.

[0012] Preferably, the box-type combined transformer further includes multiple sliding mechanisms installed between the mounting chamber and the first base plate, all of which are used to support the first base plate.

[0013] Preferably, the sliding mechanism includes: a strip-shaped channel steel fixedly installed at the bottom of the first base plate, a plurality of second rotating shafts rotatably installed on the strip-shaped channel steel, and pulleys fixedly sleeved on each of the plurality of second rotating shafts; a strip-shaped plate fixedly installed on the inner wall of the bottom of the installation chamber, the top of the strip-shaped plate having a sliding groove, the sliding groove being slidably connected to the plurality of pulleys.

[0014] Preferably, the bottom ends of the plurality of stop levers are all hemispherical, and the plurality of stop levers respectively contact the plurality of bolts and the plurality of hexagonal nuts.

[0015] Compared with related technologies, the box-type combined transformer provided by the present invention has the following advantages: Compared with existing technologies, the transformer in this invention can automatically complete the horizontal positioning and locking of the first base plate, the second base plate, and the transformer after reinstallation. Simultaneously, relying on the anti-loosening mechanism combined with the internal hexagonal sleeve to bidirectionally constrain the rotation of the hexagonal nut and bolt, and with the continuous elastic compensation of each spring, it can suppress the loosening of fasteners caused by the cyclic stress of transformer operation vibration. Specifically, the first spring in the anti-loosening mechanism continuously presses downwards against the stop bar, ensuring that the stop bar always adheres to the side wall of the hexagonal nut to prevent its rotation; the third spring normally presses down on the connecting plate, ensuring that the housing and the stop bar are constantly pressed against the fasteners; the internal hexagonal sleeve engages... The hexagonal head at the bottom of the bolt restricts its rotation. Together, the hexagonal nut and the two ends of the bolt lock the rotational freedom of the fastener, preventing vibration-induced loosening. Because the fastener can self-lock for a long time, there is no need for maintenance personnel to regularly inspect and tighten it, which greatly reduces periodic tightening operations and directly reduces the workload of daily inspection and maintenance. At the same time, it avoids faults such as poor contact, abnormal noise, and structural displacement caused by loose fasteners, and improves the structural stability and safety reliability of the box-type combined transformer in long-term operation. This can directly eliminate such routine maintenance work and precisely reduce the workload of maintenance. On the other hand, the present invention relies on the coordinated action of the handrail linkage prying component, the position locking mechanism, and the anti-loosening mechanism. Only one person can operate the handrail to simultaneously release the horizontal positioning lock and the fastener anti-loosening limit. Then the transformer can be pulled out of the installation chamber smoothly, which greatly expands the maintenance space. Maintenance personnel can carry out maintenance and replacement of parts in the open area outside the installation chamber, making maintenance operations more convenient and efficient. Attached Figure Description

[0016] Figure 1 This is a front view three-dimensional structural schematic diagram of a box-type combined transformer provided by the present invention; Figure 2 This is a side view three-dimensional cross-sectional structural schematic diagram of the present invention; Figure 3 This is a partial frontal view three-dimensional structural schematic diagram of the present invention; Figure 4 This is a partial top-view three-dimensional structural schematic diagram of the present invention; Figure 5 for Figure 1 An enlarged structural diagram of part A shown in the figure; Figure 6 for Figure 2 An enlarged structural diagram of part B shown in the figure; Figure 7 for Figure 3 An enlarged structural diagram of section C shown in the figure; Figure 8 for Figure 3 An enlarged structural diagram of part D shown in the figure; Figure 9This is a schematic diagram of the assembly structure of the first base plate, bolts, hexagonal head, internal hexagonal sleeve, hexagonal nut, housing, stop bar, connecting plate and second base plate in this invention; Figure 10 This is a cross-sectional structural diagram of the first base plate, bolt, hexagonal head, internal hexagonal sleeve, hexagonal nut, housing, stop bar, first spring, first through hole, and second base plate in this invention. Figure 11 This is a schematic diagram of the assembly structure of the movable plate, U-shaped frame, first rotating shaft, gear, first rack, second rack, second triangular steel and third triangular steel in this invention; Figure 12 This is a side three-dimensional structural diagram of the mounting chamber, first base plate, second base plate, support rod, support block, reinforcing plate and first triangular steel in this invention; Figure 13 This is a bottom-view three-dimensional structural diagram of the U-shaped plate and the prying assembly in this invention.

[0017] Reference numerals: 1. Box-type combined transformer body; 2. Installation chamber; 3. Transformer; 4. First base plate; 5. Support block; 6. Support plate; 7. Connecting column; 8. U-shaped plate; 9. Connecting plate; 10. Positioning hole; 11. Slide rod; 12. Moving plate; 13. Positioning rod; 14. Hinge seat; 15. Handrail; 16. Prying assembly; 161. U-shaped pry bar; 162. U-shaped steel; 163. Roller; 17. First through hole; 18. Bolt; 19. Hexagonal head; 20. Internal hexagonal sleeve; 21. Hexagonal nut; 22. Housing; 23. Stop bar; 24. First spring; 25. U-shaped frame; 26. First rotating shaft; 27. Gear; 28. Crossbar; 29. ​​First tooth 30. Second rack; 31. Reinforcing plate; 32. First triangular steel; 33. Fixed seat; 34. Round rod; 35. Slide plate; 36. Second through hole; 37. Box body; 38. Third through hole; 39. Limiting plate; 40. Fourth through hole; 41. Second spring; 42. Push plate; 43. Locking block; 44. Positioning block; 45. Locking groove; 46. Trapezoidal block; 47. Triangular block; 48. Steel wire rope; 49. Strip channel steel; 50. Second rotating shaft; 51. Pulley; 52. Strip plate; 53. Second triangular steel; 54. Third triangular steel; 55. Rectangular plate; 56. Pin; 57. Pull ring; 58. Third spring; 59. Second base plate; 60. Support rod; 61. Fixed rod. Detailed Implementation

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] This invention provides a box-type combined transformer, such as... Figure 1-13 As shown, the box-type combined transformer includes: a box-type combined transformer body 1 containing an installation chamber 2, a transformer 3 housed inside the installation chamber 2, a first base plate 4 below the transformer 3, a detachable second base plate 59 on the top of the first base plate 4, the top of the second base plate 59 being welded to the bottom of the transformer 3, and multiple positioning holes 10 near the side edges of both the second base plate 59 and the first base plate 4; multiple support rods 60 welded to the inner wall of one side of the installation chamber 2; multiple support blocks 5 slidably mounted on the multiple support rods 60, the tops of the multiple support blocks 5 being fixedly connected to the bottom of the first base plate 4; multiple support plates 6 welded to the inner walls of both sides of the installation chamber 2, each support plate 6 having a connecting column 7 slidably mounted on it, the top of the multiple connecting columns 7 having the same U-shaped plate 8 welded to it, the U-shaped plate 8 being located outside the transformer 3; multiple connecting plates 9 welded to the bottom of the multiple connecting columns 7, the tops of the multiple connecting plates 9 having two third springs 58 fixedly mounted on them, the tops of the multiple third springs 58 being respectively connected to multiple The support plate 6 is fixedly connected to the bottom; multiple first through holes 17 are formed on the first base plate 4 and the second base plate 59; multiple bolts 18 are respectively set in the multiple first through holes 17, and hexagonal heads 19 are fixedly installed at the bottom ends of the multiple bolts 18; multiple internal hexagonal sleeves 20 are fixedly installed on the bottom of the first base plate 4 to block the edges of the hexagonal heads 19, and the inner sides of the multiple internal hexagonal sleeves 20 respectively contact the edges of the multiple hexagonal heads 19; and the first base plate 4 and the second base plate are respectively threaded onto the multiple bolts 18 for fixing them. Multiple hexagonal nuts 21 of the second base plate 59 are attached to the top of the second base plate 59 at their bottoms; two hinge seats 14 are welded to the top of the second base plate 59, and the same handrail 15 is hinged to the two hinge seats 14. The handrail 15 is provided with a prying assembly 16 for pushing the U-shaped plate 8 upward; two position locking mechanisms are symmetrically installed in the installation chamber 2 to lock the first base plate 4 and the second base plate 59 in a horizontal position; and multiple anti-loosening mechanisms are respectively assembled on multiple connecting plates 9 to fix the hexagonal nuts 21.

[0020] In this embodiment, when the transformer 3 needs maintenance or repair during use, it can be moved out of the narrow installation chamber 2 for maintenance personnel to perform the maintenance or repair. During removal, the handle 15 needs to be pulled outwards by hand. The handle 15 rotates around the hinge seat 14, causing the prying assembly 16 to rotate and push the U-shaped plate 8 upwards. After the U-shaped plate 8 is pushed upwards, it simultaneously causes the connecting column 7 to slide on the support plate 6. The connecting column 7 pulls the connecting plate 9 upwards, compressing the third spring 58 and disengaging the anti-loosening mechanism on the connecting plate 9 from the bolt 18 and hexagonal nut 2. 1. The connecting plate 9 will also drive the locking mechanism to operate, causing the locking mechanism to release the horizontal lock on the first base plate 4 and the second base plate 59. After release, the handrail 15 can be pulled to move the first base plate 4, the second base plate 59, and the transformer 3 to the outside of the installation chamber 2. During the movement, the support block 5 fixed to the first base plate 4 will slide synchronously on the support rod 60, keeping the transformer 3 stable during the removal process. After the transformer 3 is moved out of the installation chamber 2, maintenance personnel can perform maintenance or repair on the transformer 3 in the larger external space. After the maintenance or repair work is completed, first rotate the handrail 15 to its original angle, and then push the handrail 15 to move the first base plate 4, the second base plate 59, and the transformer 3 to the outside of the installation chamber 2. Plate 4, the second base plate 59, and the transformer 3 are pushed into the installation chamber 2. During the pushing process, the support block 5, which is fixed to the first base plate 4, slides in the opposite direction on the support rod 60. When the transformer 3 returns to its previous position, the third spring 58 will push the connecting plate 9 downwards due to its own elasticity. The connecting plate 9 will also drive the connecting column 7 to slide on the support plate 6. The connecting column 7 will drive the U-shaped plate 8 to descend until it is reset. During this process, the connecting plate 9 will drive the locking mechanism to run in the opposite direction, so that the locking mechanism locks the horizontal position of the first base plate 4 and the second base plate 59. The anti-loosening mechanism assembled on the connecting plate 9 will also fix the hexagonal nut 21 at the same time, so that the hexagonal nut 21 is locked in place. Under the action of the anti-loosening mechanism, the nut 21 will not rotate and loosen on the bolt 18 due to the working vibration of the transformer 3. In addition, under the action of the inner hexagonal sleeve 20, the contact between its inner hexagonal edge and the hexagonal head 19 can prevent the bolt 18 from rotating due to the vibration of the transformer 3. In this way, the box-type combined transformer can effectively prevent the bolt 18 and the hexagonal nut 21 from loosening during long-term use, eliminating the need for maintenance personnel to tighten them regularly. This can effectively reduce the workload of maintenance personnel and improve the safety and stability of the transformer 3 during use, thus avoiding failures caused by loosening.

[0021] In a further preferred embodiment of the present invention, the position locking mechanism includes: a plurality of slide rods 11 welded to the inner wall of the bottom of the mounting chamber 2, a common movable plate 12 slidably mounted on the plurality of slide rods 11, a plurality of positioning rods 13 welded to the top of the movable plate 12, the plurality of positioning rods 13 respectively being adapted to a plurality of positioning holes 10; a crossbar 28 welded between two connecting plates 9, a first rack 29 fixedly mounted at the bottom of the crossbar 28; a U-shaped frame 25 welded to the inner wall of the mounting chamber 2, a first rotating shaft 26 rotatably mounted on the U-shaped frame 25, a gear 27 fixedly sleeved on the first rotating shaft 26, the gear 27 meshing with the first rack 29; and a second rack 30 welded to one side of the movable plate 12, the second rack 30 meshing with the gear 27.

[0022] In this embodiment, when the connecting column 7 pulls the connecting plate 9 upward, compressing the third spring 58, the connecting plate 9 synchronously drives the crossbar 28 upward, the crossbar 28 drives the first rack 29 upward, the first rack 29 drives the gear 27 and the first rotating shaft 26 to rotate on the U-shaped frame 25, the gear 27 drives the second rack 30 downward, the second rack 30 drives the moving plate 12 to slide on the slide bar 11, and the moving plate 12 drives the positioning rod 13 downward, causing the positioning rod 13 to disengage from the positioning holes 10 on the second base plate 59 and the first base plate 4. After disengagement, the second base plate 59, the first base plate 4, and the transformer 3 can move to the outside of the installation chamber 2, so that the transformer 3 can be moved outside for maintenance or repair. This expands the operating space for maintenance personnel, making maintenance or repair work more convenient. After the maintenance or repair work is completed, the handrail 15 is first rotated to its original angle. Then, by pushing the handle 15, the first base plate 4, the second base plate 59, and the transformer 3 are pushed into the installation chamber 2. After the first base plate 4, the second base plate 59, and the transformer 3 are reset, the third spring 58 will push the connecting plate 9 downward by its own elasticity. The connecting plate 9 will drive the crossbar 28 downward, the crossbar 28 will drive the first rack 29 downward, the first rack 29 will drive the gear 27 and the first rotating shaft 26 to rotate in opposite directions on the U-shaped frame 25, the gear 27 will drive the second rack 30 upward, the second rack 30 will drive the moving plate 12 to slide in opposite directions on the slide bar 11, the moving plate 12 will drive the positioning rod 13 upward, so that the positioning rod 13 is inserted into the positioning hole 10 on the second base plate 59 and the first base plate 4, locking the horizontal position of the first base plate 4, the second base plate 59, and the transformer 3, so as to ensure that the transformer 3 will not move randomly in the horizontal position due to its own vibration during operation.

[0023] In a further preferred embodiment of the present invention, the anti-loosening mechanism includes: a housing 22 fixedly installed on one side of the connecting plate 9, a plurality of stop bars 23 slidably installed on the housing 22, a first spring 24 fixedly installed at the top of each of the plurality of stop bars 23, and the top of each of the plurality of first springs 24 being fixedly connected to the top inner wall of the housing 22.

[0024] In this embodiment, when the connecting column 7 pulls the connecting plate 9 upward, the housing 22 fixed to the connecting plate 9 will rise synchronously. The housing 22 will drive multiple stop levers 23 to rise and disengage from the bolt 18 and hexagonal nut 21. After rising, multiple first springs 24 in a compressed state inside the housing 22 will push the multiple stop levers 23 to slide on the housing 22 through their own elasticity, so that the bottom ends of the multiple stop levers 23 are at the same horizontal plane. At this time, the bolt 18 and hexagonal nut 21 will not be blocked by the multiple stop levers 23, so they can move together with the first base plate 4 and the second base plate 59. When the first base plate 4, the second base plate 59 and the transformer 3 are reset... Then, the third spring 58 will push the connecting plate 9 downward by its own elasticity. The connecting plate 9 will drive the housing 22 downward, so that the multiple stops 23 on the housing 22 contact the bolt 18 and the hexagonal nut 21. Under the downward pressure of the housing 22, the multiple stops 23 on the outside will contact the edge of the hexagonal nut 21 to prevent the hexagonal nut 21 from rotating and loosening due to the working vibration of the transformer 3. This can effectively ensure the fastening performance between the bolt 18 and the hexagonal nut 21. The remaining multiple stops 23 will slide into the inside of the housing 22 due to the obstruction of the bolt 18 and the hexagonal nut 21, and compress the multiple first springs 24.

[0025] In a further preferred embodiment of the present invention, both sides of the plurality of support blocks 5 are welded with first triangular steel 32 for supporting the first base plate 4, and the tops of the plurality of first triangular steel 32 are fixedly connected to the bottom of the first base plate 4.

[0026] In this embodiment, the use of the first triangular steel 32 can effectively improve the connection strength between the support block 5 and the first base plate 4, and the stability of the first base plate 4 during movement can be improved by utilizing the principle that triangles have stability.

[0027] In a further preferred embodiment of the present invention, a rectangular plate 55 is welded to one side of the transformer 3, and a pin 56 is slidably mounted on the rectangular plate 55. The pin 56 is adapted to the pin hole on the handrail 15, and a pull ring 57 is fixedly mounted on the top end of the pin 56.

[0028] In this embodiment, when the handrail 15 is not needed, the pin 56 needs to be inserted into the pin hole on the handrail 15 to prevent the handrail 15 from triggering the prying component 16. When the handrail 15 needs to be used, the pin 56 can be pulled out of the pin hole on the handrail 15 using the pull ring 57. When the handrail 15 is pulled, it can rotate on the hinge seat 14, causing the handrail 15 to rotate and push the prying component 16 upward by prying. This is quite convenient to use.

[0029] In a further preferred embodiment of the present invention, a plurality of reinforcing plates 31 for supporting the support rods 60 are fixedly installed on the bottom inner wall of the mounting chamber 2, and one side of the plurality of reinforcing plates 31 is fixedly connected to one end of the plurality of support rods 60 respectively.

[0030] In this embodiment, the use of the reinforcing plate 31 can support the support rod 60, making it less likely to bend when bearing a large weight.

[0031] In a further preferred embodiment of the present invention, a second triangular steel 53 and a third triangular steel 54 are fixedly installed on the sides of the first rack 29 and the second rack 30 that are far apart from each other. The top of the second triangular steel 53 is fixedly connected to the bottom of the crossbar 28, and the bottom of the third triangular steel 54 is fixedly connected to the top of the movable plate 12.

[0032] In this embodiment, by using the second triangular steel 53 and the third triangular steel 54, the stability of the first rack 29 and the second rack 30 during operation can be improved by utilizing the principle that triangles have stability. This can effectively ensure the meshing strength between the first rack 29 and the gear 27, as well as the meshing strength between the second rack 30 and the gear 27.

[0033] In a further preferred embodiment of the present invention, the box-type combined transformer further includes a plurality of sliding mechanisms installed between the mounting chamber 2 and the first base plate 4, all of which are used to support the first base plate 4.

[0034] In this embodiment, the use of multiple sliding mechanisms not only allows them to share the weight of the first base plate 4 with the support rod 60, but also makes the first base plate 4, the second base plate 59, and the transformer 3 more stable when they are removed from the installation chamber 2.

[0035] In a further preferred embodiment of the present invention, the sliding mechanism includes: a strip channel steel 49 fixedly installed at the bottom of the first base plate 4, a plurality of second rotating shafts 50 rotatably installed on the strip channel steel 49, and pulleys 51 fixedly sleeved on each of the plurality of second rotating shafts 50; a strip plate 52 fixedly installed on the inner wall of the bottom of the installation chamber 2, the top of the strip plate 52 being provided with a sliding groove, and the sliding groove being slidably connected to the plurality of pulleys 51.

[0036] In this embodiment, when the first base plate 4, the second base plate 59 and the transformer 3 are removed from the installation chamber 2, the strip channel steel 49 fixed to the first base plate 4 will move synchronously. The strip channel steel 49 will drive the pulley 51 to slide on the groove on the strip plate 52 through the second rotating shaft 50, thereby reducing the load pressure on the support rod 60 and keeping the first base plate 4, the second base plate 59 and the transformer 3 stable when they are removed from the installation chamber 2.

[0037] In a further preferred embodiment of the present invention, the bottom ends of the plurality of stop levers 23 are all configured as hemispherical, and the plurality of stop levers 23 are in contact with the plurality of bolts 18 and the plurality of hexagonal nuts 21 respectively.

[0038] In this embodiment, by setting the bottom end of the stop lever 23 to a hemispherical shape, part of the stop lever 23 can slide along the edge of the hexagonal nut 21, so that the stop lever 23 can smoothly block the edge of the hexagonal nut 21.

[0039] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments: In another embodiment of the present invention, the prying assembly 16 consists of a U-shaped pry bar 161, two U-shaped steel bars 162 and two rollers 163. The U-shaped pry bar 161 is fixedly installed on the handrail 15, the two U-shaped steel bars 162 are respectively fixedly installed at both ends of the U-shaped pry bar 161, and the two rollers 163 are respectively rotatably installed on the two U-shaped steel bars 162. Both rollers 163 are located below the U-shaped plate 8.

[0040] In this embodiment, when the transformer 3 needs to be moved out of the narrow installation chamber 2, the maintenance personnel need to pull the handrail 15 outward by hand. When the handrail 15 is pulled, it will rotate on the hinge seat 14. The handrail 15 will drive the U-shaped crowbar 161 on the prying assembly 16 to rotate. The U-shaped crowbar 161 will drive the two U-shaped steels 162 to change angle, so that the rollers 163 on the two U-shaped steels 162 can contact the U-shaped plate 8 and push the U-shaped plate 8 upward through the lever principle. The upward movement method is relatively labor-saving and convenient, which can save physical strength. 8 will simultaneously drive the connecting column 7 to slide on the support plate 6. The connecting column 7 will pull the connecting plate 9 upward and compress the third spring 58, causing the anti-loosening mechanism on the connecting plate 9 to disengage from the bolt 18 and the hexagonal nut 21. The connecting plate 9 will also drive the locking mechanism to operate, causing the locking mechanism to release the locking of the first base plate 4 and the second base plate 59 to the horizontal position. At this time, as long as the handrail 15 is kept at an angle, the handrail 15 can be pulled out of the installation chamber 2 to smoothly move the first base plate 4, the second base plate 59 and the transformer 3 out of the installation chamber 2.

[0041] In another embodiment of the present invention, two disassembly mechanisms are installed between the installation chamber 2, the transformer 3, and the U-shaped plate 8. Both disassembly mechanisms are used to lock the height of the U-shaped plate 8. The disassembly mechanisms include: a fixing seat 33 fixedly installed on the inner wall of one side of the installation chamber 2, the fixing seat 33 having multiple second through holes 36, multiple round rods 34 fixedly installed on the top of the fixing seat 33, and a common sliding plate 35 slidably installed on the multiple round rods 34; a box 37 fixedly installed on the inner wall of one side of the installation chamber 2, the top of the box 37 having multiple third through holes 38, a limiting plate 39 fixedly installed on the inner wall of the box 37, the limiting plate 39 having multiple fourth through holes 40; and multiple second springs 41 fixedly installed on the limiting plate 39, one end of the multiple second springs 41 being fixedly installed with a common push plate 42. A locking block 43 is fixedly installed on the push plate 42, and the locking block 43 is slidably connected to one side of the housing 37; a positioning block 44 is fixedly installed on the top of the U-shaped plate 8, and a slot 45 is opened on the positioning block 44, which is adapted to the locking block 43; a fixing rod 61 is fixedly installed on one side of the transformer 3, and a trapezoidal block 46 is fixedly installed at one end of the fixing rod 61, and a first inclined surface is provided on the trapezoidal block 46; a triangular block 47 is fixedly installed at the bottom of the slide plate 35, and a second inclined surface is provided on the triangular block 47, which is in contact with the first inclined surface; a plurality of steel wire ropes 48 are slidably installed on a plurality of second through holes 36, a plurality of third through holes 38 and a plurality of fourth through holes 40, respectively, and one end of each plurality of steel wire ropes 48 is fixedly connected to one side of the push plate 42, and the other end of each plurality of steel wire ropes 48 is fixedly connected to the bottom of the slide plate 35.

[0042] In this embodiment, when the prying mechanism pushes the U-shaped plate 8 to cause the connecting plate 9 to disengage the anti-loosening mechanism from the bolt 18 and hexagonal nut 21, and the connecting plate 9 causes the locking mechanism to release the horizontal lock on the first base plate 4 and the second base plate 59, then by pulling the handrail 15 outward from the installation chamber 2 while maintaining the angle of the handrail 15, the first base plate 4, the second base plate 59, and the transformer 3 can be smoothly moved out of the installation chamber 2. During the removal process, the positioning block 44 fixed on the U-shaped plate 8 will abut against the bottom of the fixing seat 33, and the fixing rod 61 fixed on the transformer 3 will drive the ladder When block 46 detaches from triangular block 47, the slide plate 35 will slide down the round rod 34 under its own weight, causing the steel cable 48 fixed to the slide plate 35 to be in a slack state. At this time, the compressed second spring 41 will push the push plate 42 to move. The push plate 42 will drive the locking block 43 to slide on the housing 37, so that the locking block 43 is inserted into the slot 45 of the positioning block 44. At this time, even if the maintenance personnel release the handrail 15, the U-shaped plate 8 will not reset, and the position locking mechanism and the anti-loosening mechanism will not reset. After the maintenance or repair work is completed, first rotate the handrail 15 to the original angle. Then, by pushing the handle 15, the first base plate 4, the second base plate 59, and the transformer 3 are pushed into the installation chamber 2. When the transformer 3 is about to reset, the fixing rod 61 fixed to it will drive the first inclined surface on the trapezoidal block 46 to contact the second inclined surface on the triangular block 47. Under the pushing action of the trapezoidal block 46, the triangular block 47 can drive the sliding plate 35 to slide in the opposite direction on the round rod 34. The sliding plate 35 will pull the steel wire rope 48 upward, so that the steel wire rope 48 pulls the push plate 42, so that the push plate 42 compresses the second spring 41 and drives the locking block 43 to slide in the opposite direction on the housing 37, so that the locking block 43 gradually... As the first base plate 4, the second base plate 59, and the transformer 3 gradually disengage from the slot 45, the locking block 43 disengages from the slot 45. At this time, the third spring 58 will push the connecting plate 9 downwards by its own elasticity. The connecting plate 9 will also drive the connecting column 7 to slide on the support plate 6. The connecting column 7 will drive the U-shaped plate 8 to descend until it is reset. During this process, the connecting plate 9 will drive the locking mechanism to lock the horizontal position of the first base plate 4 and the second base plate 59. The anti-loosening mechanism mounted on the connecting plate 9 will also fix the hexagonal nut 21 at the same time to prevent the hexagonal nut 21 from loosening with the bolt 18.

[0043] In summary, compared with related technologies, the transformer in this invention can automatically complete the horizontal positioning and locking of the first base plate 4, the second base plate 59, and the transformer 3 after reinstallation. Simultaneously, relying on the anti-loosening mechanism combined with the internal hexagonal sleeve 20 to bidirectionally constrain the rotation of the hexagonal nut 21 and bolt 18, and with the continuous elastic compensation of each spring, it can suppress the loosening of fasteners caused by the cyclic stress of transformer operation vibration. Specifically, the first spring 24 in the anti-loosening mechanism continuously presses down on the stop bar 23, ensuring that the stop bar 23 always adheres to the side wall of the hexagonal nut 21 to prevent its rotation; the third spring 58 normally presses down on the connecting plate 9, ensuring that the housing 22 and the stop bar 23 are constantly pressed together. Fasteners; the inner hexagonal sleeve 20 engages with the bolt 18 at the bottom hexagonal head 19 to restrict the bolt's rotation. The two work together to lock the fastener's rotational freedom from both ends of the hexagonal nut 21 and the bolt 18, preventing vibration-induced loosening. Because the fasteners can self-lock for a long time, there is no need for maintenance personnel to regularly come to the site for re-inspection and re-tightening, which greatly reduces periodic tightening operations and directly reduces the workload of daily inspection and maintenance personnel. At the same time, it avoids faults such as poor contact, abnormal equipment noise, and structural displacement caused by loose fasteners, and improves the structural stability and safety reliability of the box-type combined transformer in long-term operation. This can directly eliminate such routine maintenance work and accurately reduce the workload of maintenance. On the other hand, the present invention relies on the coordinated action of the handrail 15, the prying component 16, the position locking mechanism, and the anti-loosening mechanism. Only one person can operate the handrail 15 to simultaneously release the horizontal positioning lock and the fastener anti-loosening limit. Then, the transformer 3 can be pulled out of the installation chamber 2 as a whole, which greatly expands the maintenance space. Maintenance personnel can carry out maintenance and replacement of parts in the open area outside the installation chamber 2, making maintenance operations more convenient and efficient.

[0044] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A box-type combined transformer, characterized in that, include: A box-type combined transformer body (1) includes an installation chamber (2). The installation chamber (2) contains a transformer (3). A first base plate (4) is provided below the transformer (3). A detachable second base plate (59) is provided on the top of the first base plate (4). The top of the second base plate (59) is welded to the bottom of the transformer (3). Multiple positioning holes (10) are provided on both the second base plate (59) and the first base plate (4) near the two side edges. Multiple support rods (60) are welded to the inner wall of one side of the mounting chamber (2); Multiple support blocks (5) are slidably installed on multiple support rods (60), and the top of each of the multiple support blocks (5) is fixedly connected to the bottom of the first base plate (4); Multiple support plates (6) are welded to the inner walls on both sides of the installation chamber (2). Connecting columns (7) are slidably installed on the multiple support plates (6). The top of the multiple connecting columns (7) is welded to the same U-shaped plate (8). The U-shaped plate (8) is located outside the transformer (3). Multiple connecting plates (9) are welded to the bottom of multiple connecting columns (7), and two third springs (58) are fixedly installed on the top of each of the multiple connecting plates (9). The top of each of the multiple third springs (58) is fixedly connected to the bottom of the multiple support plates (6). Multiple first perforations (17) are formed on the first base plate (4) and the second base plate (59). Multiple bolts (18) are respectively set in multiple first through holes (17), and hexagonal heads (19) are fixedly installed at the bottom ends of the multiple bolts (18). Multiple hexagonal sleeves (20) are fixedly installed on the bottom of the first base plate (4) to block the edge of the hexagonal head (19), and the inner sides of the multiple hexagonal sleeves (20) respectively contact the edge of the multiple hexagonal heads (19); Multiple hexagonal nuts (21) are threaded onto multiple bolts (18) to fix the first base plate (4) and the second base plate (59), and the bottom of each of the multiple hexagonal nuts (21) is in contact with the top of the second base plate (59); Two hinge seats (14) are welded to the top of the second base plate (59), and the same handrail (15) is hinged to the two hinge seats (14). The handrail (15) is provided with a prying assembly (16) for pushing up the U-shaped plate (8). Two position locking mechanisms are symmetrically installed in the mounting chamber (2) to lock the first base plate (4) and the second base plate (59) in a horizontal position; Multiple anti-loosening mechanisms are respectively mounted on multiple connecting plates (9) for fixing hexagonal nuts (21).

2. The box-type combined transformer as described in claim 1, characterized in that, The position locking mechanism includes: Multiple sliding rods (11) are welded to the bottom inner wall of the mounting chamber (2). A moving plate (12) is slidably mounted on the multiple sliding rods (11). Multiple positioning rods (13) are welded to the top of the moving plate (12). The multiple positioning rods (13) are respectively adapted to the multiple positioning holes (10). A crossbar (28) is welded between the two connecting plates (9), and a first rack (29) is fixedly installed at the bottom of the crossbar (28). A U-shaped frame (25) is welded to the inner wall of the installation chamber (2). A first rotating shaft (26) is rotatably mounted on the U-shaped frame (25). A gear (27) is fixedly sleeved on the first rotating shaft (26). The gear (27) meshes with the first rack (29). A second rack (30) is welded to one side of the movable plate (12), and the second rack (30) meshes with the gear (27).

3. The box-type combined transformer as described in claim 1, characterized in that, The anti-loosening mechanism includes: A housing (22) is fixedly installed on one side of the connecting plate (9). Multiple stop bars (23) are slidably installed on the housing (22). A first spring (24) is fixedly installed at the top of each of the multiple stop bars (23). The top of each of the multiple first springs (24) is fixedly connected to the top inner wall of the housing (22).

4. The box-type combined transformer as described in claim 1, characterized in that, Both sides of the plurality of support blocks (5) are welded with first triangular steel (32) for supporting the first base plate (4), and the top of the plurality of first triangular steel (32) is fixedly connected to the bottom of the first base plate (4).

5. The box-type combined transformer as described in claim 1, characterized in that, A rectangular plate (55) is welded to one side of the transformer (3). A pin (56) is slidably installed on the rectangular plate (55). The pin (56) is adapted to the pin hole on the handrail (15). A pull ring (57) is fixedly installed at the top of the pin (56).

6. The box-type combined transformer as described in claim 1, characterized in that, The bottom inner wall of the installation chamber (2) is fixedly installed with a plurality of reinforcing plates (31) for supporting the support rods (60), and one side of each of the plurality of reinforcing plates (31) is fixedly connected to one end of the plurality of support rods (60).

7. The box-type combined transformer as described in claim 2, characterized in that, A second triangular steel (53) and a third triangular steel (54) are fixedly installed on the sides of the first rack (29) and the second rack (30) that are far apart from each other. The top of the second triangular steel (53) is fixedly connected to the bottom of the crossbar (28), and the bottom of the third triangular steel (54) is fixedly connected to the top of the movable plate (12).

8. The box-type combined transformer as described in claim 1, characterized in that, The box-type combined transformer also includes multiple sliding mechanisms installed between the mounting chamber (2) and the first base plate (4), and the multiple sliding mechanisms are used to support the first base plate (4).

9. The box-type combined transformer as described in claim 8, characterized in that, The sliding mechanism includes: A strip channel steel (49) is fixedly installed at the bottom of the first base plate (4). Multiple second rotating shafts (50) are rotatably installed on the strip channel steel (49). Each of the multiple second rotating shafts (50) is fixedly fitted with a pulley (51). A strip plate (52) is fixedly installed on the bottom inner wall of the installation chamber (2). The top of the strip plate (52) is provided with a sliding groove, which is slidably connected to a plurality of pulleys (51).

10. The box-type combined transformer as described in claim 3, characterized in that, The bottom ends of the plurality of stop bars (23) are all hemispherical, and the plurality of stop bars (23) are in contact with the plurality of bolts (18) and the plurality of hexagonal nuts (21) respectively.

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