Pole-mounted transformer with binding post convenient to replace

Abstract

The invention relates to the technical field of power equipment, and particularly discloses a pole-mounted transformer convenient for replacing a binding post, the pole-mounted transformer comprises a transformer body, the binding post and a mounting assembly, the mounting assembly comprises a mounting frame, a supporting assembly, a mounting seat and a locking assembly, the supporting assembly and the mounting seat are arranged in the mounting frame, and the locking assembly is used for locking the binding post; the mounting base is mounted at the center of the bottom in the mounting frame, a slot for mounting a binding post is formed in the mounting base, and the supporting assembly comprises a mounting ring arranged above the mounting base and a plurality of mounting rods which are rotationally and symmetrically distributed at the edge of the mounting ring and connected with the mounting ring; an insertion opening corresponding to the insertion groove in position is formed in the center of the installation ring. According to the invention, through the cooperation of the mounting frame, the supporting assembly, the mounting seat and the locking assembly of the mounting assembly, the locking assembly can firmly fix the binding post through the synchronous movement of a plurality of locking racks, and meanwhile, the fixation can be conveniently released, so that the replacement process of the binding post is effectively simplified.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a pole-mounted transformer with convenient replacement of terminal posts. Background Art

[0002] The terminal post on the transformer is an important part of the transformer and is usually made of metal materials with good conductivity. The structural design of the terminal post usually includes two parts: a conductive post and an insulating sleeve. The conductive post is responsible for transmitting electrical energy, while the insulating sleeve is used to provide electrical isolation to ensure safety. The installation methods of the terminal post on the transformer usually include welding, bolting, etc. Among them, the welding method directly welds the terminal post to the transformer winding at high temperature, which has the advantages of firm connection and good conductivity, but once the welding is completed, it is not easy to replace. The bolt connection method fixes the terminal post to the transformer with bolts and nuts, which has the advantages of easy disassembly and replacement, but the electrical performance may be degraded due to loose bolts or poor contact.

[0003] Although the terminal blocks play a vital role in the transformer, due to the limitation of their installation method, once the terminal blocks are damaged, they are often difficult to replace. Since the terminal blocks are usually fastened to the transformer, if they are not removed properly, they may also cause damage to the transformer or other circuit components. Summary of the invention

[0004] In view of the technical defects existing in the background technology, the present invention proposes a pole-mounted transformer that is easy to replace the terminal post, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows: A pole-mounted transformer for facilitating replacement of a terminal, comprising a transformer body, a terminal and a mounting assembly, wherein the terminal is mounted on the top of the transformer body through the mounting assembly, wherein the mounting assembly comprises a mounting frame and a support assembly, a mounting seat and a locking assembly for locking the terminal, wherein the support assembly is liftably connected to the side wall of the mounting frame, wherein the mounting seat is mounted at the center of the bottom of the mounting frame, wherein a slot for mounting the terminal is provided inside the mounting seat, wherein the support assembly comprises a mounting ring disposed above the mounting seat, and a plurality of mounting rods which are rotationally symmetrically distributed on the edge of the mounting ring and connected to the mounting ring, wherein an insertion port corresponding to the slot position is provided at the center of the mounting ring; The locking assembly is rotationally symmetrical on the supporting assembly and is connected to the supporting assembly, the number of the supporting assemblies corresponds to the number of the mounting rods, the locking assembly comprises a transmission gear ring rotatably connected to the lower surface of the mounting ring and having meshing teeth on both the inner ring and the outer ring, a second gear disposed inside the transmission gear ring and capable of meshing with the transmission gear ring for transmission, a first gear disposed outside the transmission gear ring and capable of meshing with the transmission gear ring for transmission, a third gear disposed above the mounting frame and connected to the second gear through the same rotating shaft, a transmission rack meshing with the first gear for transmission, and a locking rack meshing with the third gear for transmission, the first gear being disposed below the mounting rod and rotatably connected to the mounting rod; The mounting seat comprises a fixing seat connected to the mounting frame, a conductive seat insulated and mounted inside the fixing seat, a plurality of fixing plates rotatably connected to the top edge of the fixing seat and distributed in rotational symmetry, and a tightening spring for connecting adjacent fixing plates.

[0005] Furthermore, lifting channels are correspondingly arranged on the four side walls of the installation frame, and a lifting limit rod is connected to the inside of the lifting channel. One end of the installation rod is placed in the lifting channel and is slidably sleeved on the outside of the lifting limit rod, and the other end of the installation rod is connected to the installation ring. A first return spring that is movably sleeved on the outside of the lifting limit rod is provided under the installation rod, and a threaded column corresponding to the position of the lifting channel is provided on the top of the side wall of the installation frame, and a threaded channel matching the external thread on the surface of the threaded column is provided in the side wall of the installation frame.

[0006] Furthermore, a mounting frame connected to the lower surface of the mounting rod is provided above the transmission rack, a sliding rod is installed inside the mounting frame, a sliding sleeve movably connected is provided on the outside of the sliding rod, and a second return spring movably connected to the outside of the sliding rod is provided on the side of the sliding sleeve close to the first gear. The sliding sleeve is connected to a connecting rod, and the sliding sleeve is connected to one end of the transmission rack close to the lifting channel through the connecting rod.

[0007] Furthermore, a pushing bevel block connected to the inner wall of the mounting frame is correspondingly arranged below the mounting frame and the transmission rack, and a second sliding bevel is provided on the surface of the pushing bevel block and is inclined toward the center position of the mounting frame. The end of the transmission rack close to one end of the lifting channel is provided with a first sliding bevel that can slide on the second sliding bevel.

[0008] Furthermore, a rotating ring groove is provided on the lower surface of the mounting ring, and a rotating retaining ring is provided on the top of the transmission gear ring to cooperate with the rotating ring groove. The transmission gear ring is rotatably connected to the lower surface of the mounting ring through the rotating retaining ring and the rotating ring groove. The first gear is provided with a first rotating shaft for rotation connection. The first gear is connected to the mounting rod through the first rotating shaft. A second rotating shaft for rotation connection with the mounting ring is provided inside the second gear, and both ends of the second rotating shaft are respectively connected to the second gear and the third gear.

[0009] Furthermore, a pressing frame connected to the upper surface of the mounting ring is provided outside the third gear, the third gear can rotate freely inside the pressing frame, and a moving channel for allowing the locking rack to move toward the center of the insertion port is provided inside the pressing frame.

[0010] Furthermore, several of the fixing plates are truncated in a cone shape and enclosed on the top of the fixing seat, and the top of the fixing seat is provided with a mounting groove corresponding to the lower end position of the fixing plate, and the lower end of the fixing plate is provided with a third rotating shaft for rotation connection, and the two ends of the third rotating shaft are respectively connected to the inner wall of the mounting groove, and the side walls on the left and right sides of the fixing plate are provided with limit blocks that can rotate with the fixing plate, and the mounting groove is provided with a limit plate connected to the inner wall of the mounting groove on the rotation path of the limit block, and the upper end of the fixing plate is provided with a pointed clamping plate, and the upper ends of adjacent fixing plates are connected by a tightening spring.

[0011] Furthermore, the terminal includes a conductive column and an insulating sleeve arranged outside the conductive column, the surface of the insulating sleeve is provided with a plurality of external convex rings, the lower end of the conductive column and the lower end of the insulating sleeve can be correspondingly engaged and installed in the slot of the mounting seat, the lower end surface of the insulating sleeve is provided with a plurality of fixed ring grooves that can cooperate with the pointed clamping plate, the insulating sleeve is provided with a sealing ring fixedly sleeved on the lower end of the insulating sleeve at a position below the fixed ring groove, and the inner wall of the fixed seat is provided with a sealing groove that cooperates with the sealing ring.

[0012] The beneficial effects of the present invention are: The present invention realizes the rapid installation and disassembly of the terminal post through the cooperation of the installation frame, the support assembly, the mounting seat and the locking assembly of the installation assembly. The locking assembly can firmly fix the terminal post through the synchronous movement of multiple locking racks, and can also conveniently release the fixation, thereby effectively simplifying the replacement process of the terminal post. The terminal post can be installed and used under normal circumstances through the installation assembly, and can also be replaced urgently in special circumstances to deal with the damage of the terminal post. The support assembly can be connected to the installation frame in a liftable manner. Through the coordinated use of the lifting limit rod and the first return spring, the stable movement of the mounting rod and the mounting ring in the vertical direction can be ensured, and the shaking or tilting of the terminal post during the installation process can be effectively prevented. A slot is provided inside the mounting seat, and the pointed clamping plate of the fixing plate can be engaged in the fixing ring groove of the terminal post, further enhancing the stability of the terminal post in the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the installation component structure of the present invention.

[0015] Figure 3It is a cross-sectional view of the internal structure of the installation component of the present invention.

[0016] Figure 4 It is a schematic diagram of the locking assembly structure of the present invention.

[0017] Figure 5 It is a structural schematic diagram of the mounting base of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure of the terminal of the present invention.

[0019] Reference numerals: 1- Transformer body; 2-terminal; 21-conductive column; 22-insulating sleeve; 221-external convex ring; 23-sealing ring; 24-fixing ring groove; 3-installation frame; 31-lifting channel; 4-support assembly; 41-mounting rod; 42-mounting ring; 43-lifting limit rod; 44-first return spring; 45-threaded support column; 46-rotating ring groove; 47-insertion port; 5-mounting seat; 51-fixing seat; 511-sealing card slot; 512-mounting slot; 52-fixing plate; 521-third rotating shaft; 522-limiting plate; 523-limiting block; 524-pointed card plate; 53-conductive seat; 54-tightening spring; 55-slot; 6-locking assembly; 61-transmission rack; 611-mounting frame; 612-sliding rod; 613-sliding sleeve; 614-second return spring; 615-connecting rod; 616-first sliding inclined plane; 62-first gear; 621-first rotating shaft; 622-first meshing tooth; 63-transmission gear ring; 631-rotation snap ring; 632-second meshing tooth; 633-third meshing tooth; 64- second gear; 641- second rotating shaft; 642- fourth meshing tooth; 65-third gear; 651-pressing frame; 652-fifth meshing tooth; 66-locking rack; 67-pushing inclined block; 671-second sliding inclined surface; 7- Install the components.

[0020] The implementation mode of the present invention is described below in conjunction with relevant embodiments. The implementation mode of the present invention is not limited to the following embodiments, and the present invention relates to relevant necessary components in the technical field, which should be regarded as the known technology in the technical field and can be known and mastered by the technical personnel in the technical field.

[0021] like Figures 1 to 6As shown, a pole-mounted transformer for facilitating replacement of terminal posts comprises a transformer body 1, terminal posts 2 and a mounting assembly 7, wherein the terminal posts 2 are mounted on the top of the transformer body 1 through the mounting assembly 7, wherein the mounting assembly 7 comprises a mounting frame 3 and a support assembly 4, a mounting seat 5 and a locking assembly 6 for locking the terminal posts 2, wherein the support assembly 4 is liftably connected to the side wall of the mounting frame 3, the mounting seat 5 is mounted at the center position of the bottom of the mounting frame 3, a slot 55 for mounting the terminal posts 2 is provided inside the mounting seat 5, the support assembly 4 comprises a mounting ring 42 disposed above the mounting seat 5, a plurality of mounting rods 41 which are rotationally symmetrically distributed on the edge of the mounting ring 42 and connected to the mounting ring 42, and an insertion port 47 corresponding to the position of the slot 55 is provided at the center position of the mounting ring 42.

[0022] The locking assembly 6 is rotationally symmetrical on the supporting assembly 4 and is connected to the supporting assembly 4. The number of the supporting assemblies 4 corresponds to the number of the mounting rods 41. The locking assembly 6 includes a transmission gear ring 63 rotatably connected to the lower surface of the mounting ring 42 and having meshing teeth on the inner and outer rings, a second gear 64 arranged inside the transmission gear ring 63 and capable of meshing with the transmission gear ring 63 for transmission, a first gear 62 arranged outside the transmission gear ring 63 and capable of meshing with the transmission gear ring 63 for transmission, a third gear 65 arranged above the mounting frame 3 and connected to the second gear 64 through the same rotating axis, a transmission rack 61 meshing with the first gear 62 for transmission, and a locking rack 66 meshing with the third gear 65 for transmission. The first gear 62 is arranged below the mounting rod 41 and is rotatably connected to the mounting rod 41.

[0023] The mounting seat 5 includes a fixing seat 51 connected to the mounting frame 3 , a conductive seat 53 insulated and mounted inside the fixing seat 51 , a plurality of fixing plates 52 rotatably connected to the top edge of the fixing seat 51 and distributed in rotational symmetry, and a tightening spring 54 for connecting adjacent fixing plates 52 .

[0024] Furthermore, in the above structure, the outer ring of the transmission gear ring 63 is provided with a second meshing tooth 632, the inner ring of the transmission gear ring 63 is provided with a third meshing tooth 633, the surface of the first gear 62 is provided with a first meshing tooth 622 that can mesh with the second meshing tooth 632, the surface of the second gear 64 is provided with a fourth meshing tooth 642 that can mesh with the third meshing tooth 633, the first gear 62 is meshed with the transmission rack 61 through the first meshing tooth 622, the surface of the third gear 65 is provided with a fifth meshing tooth 652, and the third gear 65 is meshed with the locking rack 66 through the fifth meshing tooth 652.

[0025] In the structure of the present invention, the mounting assembly 7 can firmly mount the terminal 2 on the transformer body 1 and facilitate replacement. The mounting frame 3 provides support and mounting platform for the mounting assembly 7. The support assembly 4 can support and fix the terminal 2 through the mounting ring 42 and the mounting rod 41, and enable the terminal 2 to be raised and lowered in the mounting frame 3. The mounting seat 5 ensures that the terminal 2 can be stably and reliably mounted on the transformer body 1 through the fixing seat 51, the conductive seat 53, the fixing plate 52 and the tightening spring 54. In the structure of the mounting seat 5, the conductive seat 53 is electrically connected to the high-voltage winding and the low-voltage winding inside the transformer body 1 respectively, and the conductive column 21 at the lower end of the terminal 2 is in close contact with the conductive seat 53 in the mounting seat 5.

[0026] In the structure of the present invention, the locking assembly 6 realizes the locking and unlocking of the locking rack 66 to the terminal 2 through the transmission of the transmission rack 61, the first gear 62, the transmission gear ring 63, the second gear 64, the third gear 65, and the locking rack 66, so as to facilitate the replacement of the terminal 2 on the transformer body 1. The lifting channel 31 and the lifting limit rod 43 are used to guide the lifting and lowering movement of the mounting rod 41 to ensure the stability of the support assembly 4 during the lifting process. The threaded support column 45 is used to support the mounting rod 41 by rotating and descending after the mounting rod 41 is lowered into place, thereby fixing the height of the mounting rod 41. The locking rack 66 of the locking assembly 6 can maintain the locking of the terminal 2. The pushing bevel block 67 is used to contact and slide downwardly through the first sliding bevel 616 of the transmission rack 61 and the second sliding bevel 671 when installing the terminal 2, thereby pushing the transmission rack 61 to move, thereby starting the transmission process of the locking assembly 6.

[0027] When the terminal 2 is installed in the present invention, the lower end of the terminal 2 enters the mounting seat 5 through the insertion port 47 and engages with the slot 55. At the same time, the locking assembly 6 fixes and locks the lower end of the terminal 2 on the supporting assembly 4, and the threaded support column 45 is rotated to descend and abut against the mounting rod 41, thereby maintaining the locking and fixing of the terminal 2 by the locking assembly 6. During the disassembly process, the locking assembly 6 can be driven to reverse as a whole by rotating the threaded support column 45 in the reverse direction and releasing the compression state of the second return spring 614, thereby releasing the fixed locking action on the lower end of the terminal 2 and pulling the terminal 2 out of the slot 55 of the mounting seat 5.

[0028] It should be noted that the terminal 2 can be installed and used in normal conditions through the installation assembly 7, and can also be replaced in emergency when the terminal 2 is damaged in special conditions. As one of the preferred embodiments of the present invention, Figure 3As shown, the four side walls of the installation frame 3 are correspondingly provided with lifting channels 31, and a lifting limit rod 43 is connected to the inside of the lifting channel 31. One end of the installation rod 41 is placed in the lifting channel 31 and is slidably sleeved on the outside of the lifting limit rod 43, and the other end of the installation rod 41 is connected to the installation ring 42. A first return spring 44 that is movably sleeved on the outside of the lifting limit rod 43 is provided below the installation rod 41, and a threaded column 45 corresponding to the position of the lifting channel 31 is provided at the top of the side wall of the installation frame 3, and a threaded channel matching the external thread on the surface of the threaded column 45 is provided in the side wall of the installation frame 3.

[0029] The lifting channel 31, the lifting limit rod 43 and the threaded support column 45 work together to achieve stable lifting, positioning and firm locking of the terminal 2 on the mounting assembly 7. The lifting limit rod 43 is installed in the lifting channel 31, and the lifting limit rod 43 is sleeved with the mounting rod 41. The lifting limit rod 43 guides and limits the mounting rod 41, so that the mounting rod 41 can be smoothly lifted and slid along the lifting limit rod 43, which helps to ensure the stability of the terminal 2 during installation or removal.

[0030] The threaded butt column 45 is rotated down to abut against the mounting rod 41, thereby fixing the height of the mounting rod 41, which helps to ensure that the locking assembly 6 can lock and fix the terminal 2 on the support assembly 4. By rotating the threaded butt column 45, the position of the mounting rod 41 in the lifting channel 31 can be conveniently fixed. When the threaded butt column 45 abuts against the mounting rod 41, the locking rack 66 of the locking assembly 6 can keep the terminal 2 locked and fixed, thereby enhancing the stability and reliability of the terminal 2 on the mounting assembly 7.

[0031] The first return spring 44 is installed below the mounting rod 41 and movably sleeved on the outside of the lifting limit rod 43. When the terminal 2 is pressed down and installed in the mounting seat 5, the mounting rod 41 will slide downward along the lifting limit rod 43 and compress the first return spring 44. After the terminal 2 is installed, the threaded support column 45 rotates down and abuts against the mounting rod 41, so that the locking assembly 6 fixes and locks the terminal 2. When it is necessary to release the lock of the locking assembly 6 on the terminal 2, the threaded support column 45 is twisted in the opposite direction to make the threaded support column 45 rise in the lifting channel 31. The first return spring 44 will release its stored elastic potential energy and push the mounting rod 41 to reset upward, thereby ensuring that the mounting rod 41 and the supporting assembly 4 connected thereto can return to the initial position after the terminal 2 is disassembled.

[0032] As one of the preferred embodiments of the present invention, Figures 2 to 4As shown, a mounting frame 611 connected to the lower surface of the mounting rod 41 is provided above the transmission rack 61, a sliding rod 612 is installed inside the mounting frame 611, a sliding sleeve 613 movably sleeved is provided outside the sliding rod 612, and a second return spring 614 movably sleeved outside the sliding rod 612 is provided on the side of the sliding sleeve 613 close to the first gear 62, the sliding sleeve 613 is connected to a connecting rod 615, and the sliding sleeve 613 is connected to one end of the transmission rack 61 close to the lifting channel 31 through the connecting rod 615.

[0033] Furthermore, in the above structure, a pushing bevel block 67 connected to the inner wall of the mounting frame 3 is correspondingly arranged below the mounting frame 3 and the transmission rack 61, and a second sliding bevel 671 is provided on the surface of the pushing bevel block 67 and is inclined toward the center position of the mounting frame 3, and a first sliding bevel 616 capable of sliding on the second sliding bevel 671 is provided at the end of the transmission rack 61 close to one end of the lifting channel 31.

[0034] The transmission rack 61 converts the vertical movement of the terminal 2 when it is pressed down into the rotational movement of the locking assembly 6 by meshing with the first gear 62. When the terminal 2 is pressed down, the first sliding inclined surface 616 of the transmission rack 61 will slide on the second sliding inclined surface 671 of the pushing bevel block 67, thereby driving the transmission rack 61 to move toward the center of the insertion port 47, and then driving the first gear 62 to rotate, and triggering the transmission of the entire locking assembly 6, finally realizing the locking of the terminal 2 by the locking rack 66.

[0035] Before the locking assembly 6 locks the terminal 2, the second return spring 614 is in a natural state. When the terminal 2 is pressed down into the slot 55 of the mounting seat 5, the outer convex ring 221 at the lower end of the terminal 2 will contact the pressing frame 651 and continue to press down. During this process, the mounting rod 41 will slide downward along the lifting limit rod 43 and compress the first return spring 44. As the terminal 2 is pressed down, the first sliding inclined surface 616 of the transmission rack 61 will slide downward on the second sliding inclined surface 671 of the pushing inclined block 67, thereby driving the transmission rack 61 to move and pull the sliding sleeve 613 along the sliding rod 6 through the connecting rod 615. 12 moves in the direction of the first gear 62. At this time, the second return spring 614 is compressed. As the transmission rack 61 moves, it will drive the first gear 62 to rotate, and then drive the third gear 65 to rotate through the transmission gear ring 63 and the second gear 64. The rotation of the third gear 65 will drive the locking rack 66 to move closer to the center position of the insertion port 47 and abut against the lower end surface of the terminal 2 to achieve locking. By rotating the threaded abutment 45, the position of the mounting rod 41 in the lifting channel 31 can be easily fixed. When the threaded abutment 45 abuts against the mounting rod 41, the locking rack 66 of the locking assembly 6 can keep the terminal 2 locked.

[0036] When it is necessary to release the lock, the threaded post 45 is rotated in the opposite direction to make it rise in the lifting channel 31, thereby releasing the mounting rod 41, and under the thrust of the first return spring 44, the mounting rod 41 is reset and raised. As the mounting rod 41 rises, the compression state of the second return spring 614 is released and restored to its original state, pushing the sliding sleeve 613 to move along the sliding rod 612 in the direction away from the first gear 62. The movement of the sliding sleeve 613 will drive the transmission rack 61 to move in the opposite direction through the connecting rod 615, and the transmission rack 61 will drive the first gear 62 to rotate in the opposite direction, and drive the third gear 65 to rotate in the opposite direction through the transmission gear ring 63 and the second gear 64. As the third gear 65 rotates in the opposite direction, the locking rack 66 will retract and move away from the lower end of the terminal 2, thereby releasing the lock.

[0037] As one of the preferred embodiments of the present invention, Figure 2 , Figure 3 and Figure 4 As shown, a rotating ring groove 46 is provided on the lower surface of the mounting ring 42, and a rotating retaining ring 631 cooperates with the rotating ring groove 46 at the top of the transmission gear ring 63. The transmission gear ring 63 is rotatably connected to the lower surface of the mounting ring 42 through the rotating retaining ring 631 and the rotating ring groove 46. The first gear 62 is provided with a first rotating shaft 621 for rotational connection. The first gear 62 is connected to the mounting rod 41 through the first rotating shaft 621. The second gear 64 is provided with a second rotating shaft 641 for rotational connection with the mounting ring 42. The two ends of the second rotating shaft 641 are respectively connected to the second gear 64 and the third gear 65.

[0038] Furthermore, in the above structure, a pressing frame 651 connected to the upper surface of the mounting ring 42 is provided outside the third gear 65, and the third gear 65 can rotate freely inside the pressing frame 651. A moving channel is provided inside the pressing frame 651 for allowing the locking rack 66 to move toward the center position of the insertion port 47.

[0039] A rotating ring groove 46 is provided on the lower surface of the mounting ring 42, and the top of the transmission gear ring 63 cooperates with the rotating ring groove 46 through a rotating retaining ring 631, so that the transmission gear ring 63 can rotate freely on the lower surface of the mounting ring 42, and the outer ring and inner ring of the transmission gear ring 63 are respectively provided with second meshing teeth 632 and third meshing teeth 633, the second meshing teeth 632 mesh with the first gear 62 for transmission, and the third meshing teeth 633 mesh with the second gear 64 for transmission.

[0040] The first gear 62 is connected to the mounting rod 41 through the first rotating shaft 621. The first gear 62 can rotate on the first rotating shaft 621. The surface of the first gear 62 is provided with a first meshing tooth 622 that can mesh with the second meshing tooth 632 of the transmission gear ring 63. At the same time, the first gear 62 is also meshed with the transmission rack 61 through the first meshing tooth 622. The second gear 64 is provided with a second rotating shaft 641 rotatably connected to the mounting ring 42. The two ends of the second rotating shaft 641 are respectively connected to the second gear 64 and the third gear 65, so that the second gear 64 and the third gear 65 keep rotating synchronously on the mounting ring 42. The second gear 64 meshes with the third meshing tooth 633 of the transmission gear ring 63. At the same time, the third gear 65 meshes with the locking rack 66. When the transmission gear ring 63 rotates, it can drive the second gear 64 to rotate, and then drive the third gear 65 to rotate through the second rotating shaft 641.

[0041] The pressing frame 651 is connected to the upper surface of the mounting ring 42, and the third gear 65 can rotate freely in the pressing frame 651. A moving channel is provided inside the pressing frame 651 for the locking rack 66 to move toward the center of the insertion port 47. The locking rack 66 passes through the moving channel and moves toward the center of the insertion port 47 driven by the third gear 65, thereby realizing the locking function of the lower end of the terminal 2.

[0042] When the terminal 2 is inserted into the mounting assembly 7, the lower end of the terminal 2 will pass through the insertion port 47 of the mounting ring 42. During this process, the outer convex ring 221 on the insulating sleeve 22 of the terminal 2 will be pressed onto the pressing frame 651. As the terminal 2 continues to be pressed downward, the pressing frame 651 drives the mounting rod 41 and the mounting ring 42 to descend in the mounting frame 3. The mounting rod 41 will slide downward under the guidance of the lifting limit rod 43 and compress the first return spring 44. This downward pressing process will drive the transmission rack 61 to slide downward on the pushing bevel block 67, thereby triggering the locking assembly 6 to lock the terminal 2.

[0043] As one of the preferred embodiments of the present invention, Figure 3 and Figure 5 As shown, several of the fixing plates 52 are truncated cone-shaped and enclosed on the top of the fixing seat 51. The top of the fixing seat 51 is provided with a mounting groove 512 corresponding to the lower end position of the fixing plate 52. The lower end of the fixing plate 52 is provided with a third rotating shaft 521 for rotation connection. The two ends of the third rotating shaft 521 are respectively connected to the inner wall of the mounting groove 512. The left and right side walls of the fixing plate 52 are provided with limit blocks 523 that can rotate with the fixing plate 52. The mounting groove 512 is provided with a limit plate 522 connected to the inner wall of the mounting groove 512 on the rotation path of the limit block 523. The upper end of the fixing plate 52 is provided with a pointed clamping plate 524, and the upper ends of adjacent fixing plates 52 are connected by a tightening spring 54.

[0044] A plurality of fixing plates 52 are truncated in a cone shape and enclosed on the top of the fixing seat 51. The upper end of the fixing plate 52 is inclined toward the axis of the mounting seat 5, and a fixing cover with a tightened upper opening is formed on the fixing seat 51. Through the tension of the tightening spring 54, the pointed clamping plate 524 connected to the upper end of the fixing plate 52 can be more tightly engaged in the fixing ring groove 24 of the terminal 2, which can more firmly fix the terminal 2 to prevent it from shaking or falling off in the mounting seat 5, further enhancing the stability of the terminal 2 in the mounting seat 5. At the same time, it can ensure good contact between the conductive column 21 of the terminal 2 and the conductive seat 53.

[0045] A mounting groove 512 corresponding to the lower end position of the fixing plate 52 is provided on the top of the fixing seat 51, and the lower end of the fixing plate 52 is connected to the inner wall of the mounting groove 512 through a third rotating shaft 521, so that the fixing plate 52 can rotate within a certain range in the mounting groove 512, and the side walls on the left and right sides of the fixing plate 52 are provided with limit blocks 523 that can rotate with the fixing plate 52, and the mounting groove 512 is provided with a limit plate 522 connected to the inner wall of the mounting groove 512 on the rotation path of the limit block 523. The cooperation between the limit plate 522 and the limit block 523 limits the rotation range of the fixing plate 52, so that after the lower end of the terminal 2 is separated from the mounting seat 5, the fixing plate 52 can still form a fixed cover structure with a tightened upper opening on the top of the fixing seat 51.

[0046] As one of the preferred embodiments of the present invention, Figure 5 and Figure 6 As shown, the terminal 2 includes a conductive column 21 and an insulating sleeve 22 arranged outside the conductive column 21, and a plurality of outer convex rings 221 are provided on the surface of the insulating sleeve 22. The lower end of the conductive column 21 and the lower end of the insulating sleeve 22 can be correspondingly engaged and installed in the slot 55 of the mounting seat 5. The lower end surface of the insulating sleeve 22 is provided with a plurality of fixed ring grooves 24 that can cooperate with the pointed mouth clamping plate 524. The insulating sleeve 22 is provided with a sealing ring 23 fixedly sleeved on the lower end of the insulating sleeve 22 at a position below the fixed ring groove 24, and a sealing groove 511 that cooperates with the sealing ring 23 is provided on the inner wall of the fixing seat 51.

[0047] The lower end of the conductive column 21 and the lower end of the insulating sleeve 22 can be correspondingly engaged and installed in the slot 55 of the mounting seat 5, ensuring the stable installation of the terminal 2 and making the electrical connection between the terminal 2 and the transformer reliable. At the lower end of the insulating sleeve 22, a fixed ring groove 24 is provided to cooperate with the pointed clamping plate 524. Through the clamping action of the pointed clamping plate 524, the stability of the terminal 2 in the mounting seat 5 is further enhanced. At the same time, the insulating sleeve 22 is provided with a fixed sleeve sealing ring 23 at a position below the fixed ring groove 24, and a sealing groove 511 cooperating with the sealing ring 23 is provided on the inner wall of the fixing seat 51. The sealing ring 23 is engaged in the sealing groove 511 to form a sealing structure, thereby effectively preventing the intrusion of water and moisture and ensuring the safety of electricity use.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pole-mounted transformer for facilitating replacement of terminal posts, comprising a transformer body (1), a terminal post (2) and a mounting assembly (7), characterized in that: The terminal (2) is mounted on the top of the transformer body (1) via a mounting assembly (7); the mounting assembly (7) comprises a mounting frame (3) and a support assembly (4) arranged in the mounting frame (3), a mounting seat (5) and a locking assembly (6) for locking the terminal (2); the support assembly (4) is connected to the side wall of the mounting frame (3) in a liftable manner; the mounting seat (5) is mounted at the center of the bottom of the mounting frame (3); a slot (55) for mounting the terminal (2) is provided inside the mounting seat (5); the support assembly (4) comprises a mounting ring (42) arranged above the mounting seat (5); a plurality of mounting rods (41) arranged rotationally symmetrically on the edge of the mounting ring (42) and connected to the mounting ring (42); and an insertion opening (47) corresponding to the position of the slot (55) is provided at the center of the mounting ring (42); The locking assembly (6) is rotationally symmetrical on the support assembly (4) and is connected to the support assembly (4); the number of the support assemblies (4) corresponds to the number of the mounting rods (41); the locking assembly (6) comprises a transmission gear ring (63) rotatably connected to the lower surface of the mounting ring (42) and having meshing teeth on both the inner ring and the outer ring; a second gear (64) disposed inside the transmission gear ring (63) and capable of meshing with the transmission gear ring (63); a first gear (62) disposed outside the transmission gear ring (63) and capable of meshing with the transmission gear ring (63); a third gear (65) disposed above the mounting frame (3) and connected to the second gear (64) via the same rotating shaft; a transmission rack (61) meshing with the first gear (62) and a locking rack (66) meshing with the third gear (65); the first gear (62) is disposed below the mounting rod (41) and is rotationally connected to the mounting rod (41); The mounting seat (5) comprises a fixing seat (51) connected to the mounting frame (3), a conductive seat (53) insulated and mounted inside the fixing seat (51), a plurality of fixing plates (52) rotatably connected to the top edge of the fixing seat (51) and distributed in a rotationally symmetrical manner, and a tightening spring (54) for connecting adjacent fixing plates (52).

2. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: The four side walls of the installation frame (3) are provided with lifting channels (31) correspondingly. The lifting channel (31) is internally connected with a lifting limit rod (43). One end of the installation rod (41) is placed in the lifting channel (31) and is slidably sleeved on the outside of the lifting limit rod (43). The other end of the installation rod (41) is connected to a mounting ring (42). A first return spring (44) movably sleeved on the outside of the lifting limit rod (43) is provided below the installation rod (41). A threaded support column (45) corresponding to the position of the lifting channel (31) is provided at the top of the side wall of the installation frame (3). A threaded channel matching the external thread on the surface of the threaded support column (45) is provided inside the side wall of the installation frame (3).

3. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: A mounting frame (611) connected to the lower surface of the mounting rod (41) is provided above the transmission rack (61), a sliding rod (612) is installed inside the mounting frame (611), a sliding sleeve (613) movably sleeved is provided outside the sliding rod (612), a second return spring (614) movably sleeved outside the sliding rod (612) is provided on a side of the sliding sleeve (613) close to the first gear (62), the sliding sleeve (613) is connected to a connecting rod (615), and the sliding sleeve (613) is connected to one end of the transmission rack (61) close to the lifting channel (31) via the connecting rod (615).

4. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: A push inclined block (67) connected to the inner wall of the installation frame (3) is correspondingly arranged below the installation frame (3) and the transmission rack (61); a second sliding inclined surface (671) inclined toward the center position of the installation frame (3) is arranged on the surface of the push inclined block (67); and a first sliding inclined surface (616) capable of sliding on the second sliding inclined surface (671) is arranged at an end of the transmission rack (61) close to one end of the lifting channel (31).

5. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: The lower surface of the mounting ring (42) is provided with a rotating ring groove (46); the top of the transmission gear ring (63) is provided with a rotating snap ring (631) that cooperates with the rotating ring groove (46); the transmission gear ring (63) is rotatably connected to the lower surface of the mounting ring (42) via the rotating snap ring (631) and the rotating ring groove (46); the first gear (62) is provided with a first rotating shaft (621) that is rotatably connected; the first gear (62) is connected to the mounting rod (41) via the first rotating shaft (621); the second gear (64) is provided with a second rotating shaft (641) that is rotatably connected to the mounting ring (42); and two ends of the second rotating shaft (641) are respectively connected to the second gear (64) and the third gear (65).

6. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: The third gear (65) is provided with a pressing frame (651) connected to the upper surface of the mounting ring (42) on the outside, the third gear (65) is freely rotatable in the pressing frame (651), and the pressing frame (651) is provided with a moving channel for allowing the locking rack (66) to move toward the center of the insertion port (47).

7. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: A plurality of the fixing plates (52) are truncated in a cone shape and are enclosed at the top of the fixing seat (51); a mounting groove (512) corresponding to the lower end position of the fixing plate (52) is provided at the top of the fixing seat (51); a third rotating shaft (521) rotatably connected is provided at the lower end of the fixing plate (52); two ends of the third rotating shaft (521) are respectively connected to the inner wall of the mounting groove (512); a limit block (523) capable of rotating with the fixing plate (52) is provided on the left and right side walls of the fixing plate (52); a limit plate (522) connected to the inner wall of the fixing groove (512) is provided on the rotation path of the limit block (523); a pointed clamping plate (524) is provided at the upper end of the fixing plate (52); and the upper ends of adjacent fixing plates (52) are connected via a tightening spring (54).

8. A pole-mounted transformer for easy replacement of terminal posts according to claim 1, characterized in that: The terminal (2) comprises a conductive column (21) and an insulating sleeve (22) arranged outside the conductive column (21); a plurality of outer convex rings (221) are provided on the surface of the insulating sleeve (22); the lower end of the conductive column (21) and the lower end of the insulating sleeve (22) can be correspondingly engaged and installed in a slot (55) of the mounting seat (5); a plurality of fixing ring grooves (24) that can cooperate with a pointed mouth clamping plate (524) are provided on the lower end surface of the insulating sleeve (22); a sealing ring (23) fixedly sleeved on the lower end of the insulating sleeve (22) is provided at a position below the fixing ring groove (24); and a sealing clamping groove (511) that cooperates with the sealing ring (23) is provided on the inner wall of the fixing seat (51).

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