A pole-mounted transformer with a terminal post that is easy to replace

Abstract

The present application relates to the technical field of power equipment, and specifically discloses a pole transformer with a wiring post convenient to replace, which comprises a transformer body, a wiring post and a mounting assembly, the mounting assembly comprises a mounting frame, a support assembly, a mounting seat and a locking assembly for locking the wiring post, the mounting seat is mounted at the center position of the bottom of the mounting frame, the inside of the mounting seat is provided with a slot for mounting the wiring post, the support assembly comprises a mounting ring arranged above the mounting seat, a plurality of mounting rods arranged in a rotationally symmetrical manner at the edge of the mounting ring and connected with the mounting ring, and the mounting ring is provided with an insertion opening corresponding to the position of the slot at the center position; through cooperation of the mounting frame, the support assembly, the mounting seat and the locking assembly of the mounting assembly, the locking assembly can firmly fix the wiring post through synchronous movement of a plurality of locking racks, and the wiring post can be conveniently and easily fixed and released, so that the replacement process of the wiring post is effectively simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a pole-mounted transformer with replaceable terminal post. BACKGROUND

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

[0003] Although the terminal post plays a crucial role on the transformer, due to the limitation of its installation method, once the terminal post is damaged, it is not easy to replace. Since the terminal post is usually fastened to the transformer, improper disassembly may cause damage to the transformer or other circuit elements. SUMMARY

[0004] In view of the technical defects in the background art, the present application proposes a pole-mounted transformer with replaceable terminal post, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0005] A pole-mounted transformer with replaceable terminal post, comprising a transformer body, a terminal post and an installation assembly, the terminal post is installed on the top of the transformer body through the installation assembly, the installation assembly comprises an installation frame, a support assembly, an installation seat and a locking assembly for locking the terminal post, the support assembly is connected with the side wall of the installation frame in a lifting manner, the installation seat is installed at the center position of the bottom of the installation frame, the inside of the installation seat is provided with a slot for installing the terminal post, the support assembly comprises an installation ring arranged above the installation seat, a plurality of installation rods arranged in a rotationally symmetrical manner at the edge of the installation ring and connected with the installation ring, and an insertion port corresponding to the position of the slot is arranged at the center position of the installation ring.

[0006] The locking assembly is rotationally symmetrical on the support assembly and is connected to the support assembly, the number of the support assemblies corresponds to the number of the mounting rods, the locking assembly includes 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 arranged inside the transmission gear ring and capable of meshing with the transmission gear ring for transmission, a first gear arranged outside the transmission gear ring and capable of meshing with the transmission gear ring for transmission, a third gear arranged 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 arranged below the mounting rod and rotatably connected to the mounting rod;

[0007] The mounting seat includes a fixing seat connected to the mounting frame, a conductive seat insulated and installed 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.

[0008] Furthermore, the four side walls of the mounting frame are provided with lifting channels in correspondence, and a lifting limit rod is connected to the inside of the lifting channel. One end of the mounting rod is placed in the lifting channel and is slidably sleeved on the outside of the lifting limit rod. The other end of the mounting rod is connected to the mounting ring. A first return spring that is movably sleeved on the outside of the lifting limit rod is provided under the mounting rod. A threaded post corresponding to the position of the lifting channel is provided at the top of the side wall of the mounting frame, and a threaded channel that matches the external thread on the surface of the threaded post is provided in the side wall of the mounting frame.

[0009] Furthermore, a mounting bracket connected to the lower surface of the mounting rod is provided above the transmission rack, a sliding rod is installed inside the mounting bracket, 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.

[0010] Furthermore, a pushing bevel block connected to the inner wall of the mounting frame is correspondingly provided below the mounting frame and the transmission rack, and the surface of the pushing bevel block is provided with a second sliding bevel inclined toward the center position of the mounting frame, and the end of the transmission rack close to one end of the lifting channel is provided with a first sliding bevel capable of sliding on the second sliding bevel.

[0011] 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 is provided inside the second gear for rotation connection with the mounting ring. The two ends of the second rotating shaft are respectively connected to the second gear and the third gear.

[0012] Furthermore, a pressing frame connected to the upper surface of the mounting ring is provided outside the third gear, and the third gear can rotate freely in the pressing frame. A moving channel is provided inside the pressing frame for allowing the locking rack to move toward the center of the insertion port.

[0013] 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, 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.

[0014] Furthermore, the terminal includes a conductive post and an insulating sleeve arranged on the outside of the conductive post, and the surface of the insulating sleeve is provided with several external convex rings. The lower end of the conductive post 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 several 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 a sealing groove that cooperates with the sealing ring is provided on the inner wall of the fixing seat.

[0015] The beneficial effects of the present invention are:

[0016] The present invention realizes the rapid installation and disassembly of the terminal post through the cooperation of the installation frame, support assembly, mounting seat and 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 be easily released, 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 damage to the terminal post. The support assembly can be connected to the installation frame in a liftable manner. Through the cooperation 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, effectively preventing the terminal from shaking or tilting during the installation process. A slot is provided inside the mounting seat, and the pointed card 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

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the installation component structure of the present invention.

[0019] Figure 3 It is a cross-sectional view of the internal structure of the installation component of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the locking assembly of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the mounting base of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the terminal of the present invention.

[0023] Reference numerals:

[0024] 1- Transformer body;

[0025] 2-terminal; 21-conductive column; 22-insulating sleeve; 221-external convex ring; 23-sealing ring; 24-fixing ring groove;

[0026] 3-installation frame; 31-lifting channel;

[0027] 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-Insert port;

[0028] 5-mounting seat; 51-fixing seat; 511-sealing slot; 512-mounting slot; 52-fixing plate; 521-third rotating axis; 522-limiting plate; 523-limiting block; 524-nose card plate; 53-conductive seat; 54-tightening spring; 55-slot;

[0029] 6-locking assembly;

[0030] 61- transmission rack; 611- mounting bracket; 612- slide rod; 613- sliding sleeve; 614- second return spring; 615- connecting rod; 616- first sliding inclined plane;

[0031] 62-first gear; 621-first rotating shaft; 622-first meshing tooth;

[0032] 63-transmission gear ring; 631-rotating snap ring; 632-second meshing tooth; 633-third meshing tooth;

[0033] 64-second gear; 641-second rotating shaft; 642-fourth meshing tooth;

[0034] 65-third gear; 651-pressing frame; 652-fifth meshing tooth;

[0035] 66-locking rack; 67-pushing inclined block; 671-second sliding inclined surface;

[0036] 7- Install the components.

[0037] The following describes the implementation of the present invention in conjunction with relevant embodiments. The implementation of the present invention is not limited to the following embodiments, and the present invention relates to relevant necessary components in this technical field and should be regarded as a well-known technology in this technical field, which can be known and mastered by technical personnel in this technical field.

[0038] like Figures 1 to 6 As shown, a pole-mounted transformer for easy replacement of terminal posts includes a transformer body 1, a terminal post 2 and a mounting assembly 7, wherein the terminal post 2 is mounted on the top of the transformer body 1 through the mounting assembly 7, and the mounting assembly 7 includes a mounting frame 3 and a support assembly 4, a mounting seat 5 and a locking assembly 6 for locking the terminal post 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 installed at the center position of the bottom of the mounting frame 3, and a slot 55 for mounting the terminal post 2 is provided inside the mounting seat 5, the support assembly 4 includes a mounting ring 42 arranged above the mounting seat 5, and a plurality of mounting rods 41 arranged in a rotationally symmetrical distribution 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.

[0039] The locking assembly 6 is rotationally symmetrical on the support assembly 4 and is connected to the support assembly 4. The number of support assemblies 4 corresponds to the number of 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 with meshing teeth on both 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.

[0040] The mounting base 5 includes a fixing base 51 connected to the mounting frame 3, a conductive base 53 insulated and installed inside the fixing base 51, a plurality of fixing plates 52 rotatably connected to the top edge of the fixing base 51 and distributed in rotational symmetry, and a tightening spring 54 for connecting adjacent fixing plates 52.

[0041] 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.

[0042] 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.

[0043] 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 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 rotate and lower the mounting rod 41 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 lock on the terminal 2. The pushing block 67 is used to contact the first sliding inclined surface 616 of the transmission rack 61 with the second sliding inclined surface 671 and slide downward when installing the terminal 2, thereby pushing the transmission rack 61 to move, thereby starting the transmission process of the locking assembly 6.

[0044] 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 support assembly 4, and the threaded support column 45 is rotated to descend and abut against the mounting rod 41, thereby maintaining the locking assembly 6 on the terminal 2. 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.

[0045] It should be noted that the terminal 2 can be installed and used under normal circumstances through the installation component 7, and can also be replaced in an emergency in special circumstances when the terminal 2 is damaged.

[0046] As one of the preferred embodiments of the present invention, Figure 3 As shown, the four side walls of the mounting 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 mounting 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 mounting rod 41 is connected to the mounting ring 42. A first return spring 44 that is movably sleeved on the outside of the lifting limit rod 43 is provided under the mounting rod 41. A threaded column 45 corresponding to the position of the lifting channel 31 is provided on the top of the side wall of the mounting frame 3, and a threaded channel that matches the external thread on the surface of the threaded column 45 is provided in the side wall of the mounting frame 3.

[0047] 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 disassembly.

[0048] The threaded buttress 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 buttress 45, the position of the mounting rod 41 in the lifting channel 31 can be conveniently fixed. When the threaded buttress 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.

[0049] 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 their initial position after the terminal 2 is disassembled.

[0050] As one of the preferred embodiments of the present invention, Figures 2 to 4 As shown, a mounting bracket 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 bracket 611, and a sliding sleeve 613 that is movably sleeved is provided on the outside of the sliding rod 612. The sliding rod 612 is provided with a second return spring 614 that is movably sleeved on the outside of the sliding rod 612 on the side of the sliding sleeve 613 close to the first gear 62, and 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.

[0051] Further, in the above structure, the mounting frame 3 is provided with a push inclined block 67 connected with the inner wall of the mounting frame 3 below the transmission rack 61, the surface of the push inclined block 67 is provided with a second sliding inclined surface 671 inclined to the center of the mounting frame 3, and the end of the transmission rack 61 near the one end of the lifting channel 31 is provided with a first sliding inclined surface 616 capable of sliding on the second sliding inclined surface 671.

[0052] The transmission rack 61 converts the vertical movement when the terminal post 2 is pressed down into the rotating movement of the locking assembly 6 through the meshing transmission with the first gear 62. When the terminal post 2 is pressed down, the first sliding inclined surface 616 of the transmission rack 61 slides on the second sliding inclined surface 671 of the push inclined block 67, thereby driving the transmission rack 61 to move to the center of the insertion port 47, driving the first gear 62 to rotate, triggering the transmission of the entire locking assembly 6, and finally realizing the locking of the terminal post 2 by the locking rack 66.

[0053] Before the locking assembly 6 locks the terminal post 2, the second reset spring 614 is in a natural state. When the terminal post 2 is pressed down into the insertion slot 55 of the mounting seat 5, the outer convex ring 221 at the lower end of the terminal post 2 will contact the pressing frame 651 and continue to be pressed down. In this process, the mounting rod 41 will slide downward along the lifting limiting rod 43 and compress the first reset spring 44. With the pressing down of the terminal post 2, the first sliding inclined surface 616 of the transmission rack 61 will slide downward on the second sliding inclined surface 671 of the push inclined block 67, thereby driving the transmission rack 61 to move and pulling the sliding sleeve 613 to move along the sliding rod 612 to the direction of the first gear 62 through the connecting rod 615. At this time, the second reset spring 614 is compressed. With the movement of the transmission rack 61, it drives the first gear 62 to rotate, thereby driving the third gear 65 to rotate through the transmission ring 63 and the second gear 64. The rotation of the third gear 65 drives the locking rack 66 to move to the center position of the insertion port 47 and abut against the lower end surface of the terminal post 2, realizing the locking. The rotating threaded stop column 45 can conveniently fix the position of the mounting rod 41 in the lifting channel 31. When the threaded stop column 45 abuts against the mounting rod 41, the locking rack 66 of the locking assembly 6 can keep locking and fixing the terminal post 2.

[0054] When the lock needs to be released, the threaded support column 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 compressed 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.

[0055] 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 is provided on the top of the transmission gear ring 63 to cooperate with the rotating ring groove 46. 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 rotation 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 rotation 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.

[0056] Furthermore, in the above structure, a pressing frame 651 connected to the upper surface of the mounting ring 42 is provided on the outside of the third gear 65, 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 position of the insertion port 47.

[0057] A rotating ring groove 46 is provided on the lower surface of the mounting ring 42. 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. The outer ring and the 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 are meshed with the first gear 62 for transmission, and the third meshing teeth 633 are meshed with the second gear 64 for transmission.

[0058] The first gear 62 is connected to the mounting rod 41 through the first rotating shaft 621, and 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 that is 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 is meshed with the third meshing tooth 633 of the transmission gear ring 63. At the same time, the third gear 65 is meshed 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.

[0059] 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 position of the insertion port 47. The locking rack 66 passes through the moving channel and moves toward the center position of the insertion port 47 driven by the third gear 65, thereby realizing the locking function of the lower end of the terminal 2.

[0060] 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 protruding 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.

[0061] As one of the preferred embodiments of the present invention, Figure 3 and Figure 5 As shown, several of the fixed plates 52 are truncated and enclosed on the top of the fixed seat 51. The top of the fixed seat 51 is provided with a mounting groove 512 corresponding to the lower end position of the fixed plate 52. The lower end of the fixed plate 52 is provided with a third rotating shaft 521 for rotation. 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 fixed plate 52 are provided with limit blocks 523 that can rotate with the fixed 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 fixed plate 52 is provided with a pointed clamping plate 524, and the upper ends of adjacent fixed plates 52 are connected by a tightening spring 54.

[0062] A plurality of fixing plates 52 are enclosed in a truncated cone shape on the top of the fixing seat 51, and the upper end of the fixing plate 52 is inclined toward the axis of the mounting seat 5, forming a fixing cover with a tightened upper opening 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 and 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, and at the same time, ensuring good contact between the conductive column 21 of the terminal 2 and the conductive seat 53.

[0063] 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 connected to the inner wall of the mounting groove 512 through the third rotating shaft 521, so that the fixing plate 52 can rotate within a certain range in the mounting groove 512. 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. 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 mouth on the top of the fixing seat 51.

[0064] 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 on the outside of 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 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.

[0065] The lower end of the conductive post 21 and the lower end of the insulating sleeve 22 can be correspondingly engaged and installed in the slot 55 of the mounting base 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, there is a fixed ring groove 24 that cooperates 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 base 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 clamping groove 511 that cooperates with the sealing ring 23 is provided on the inner wall of the fixing base 51. The sealing ring 23 is engaged with the sealing clamping groove 511 to form a sealing structure, thereby effectively preventing the intrusion of water and moisture and ensuring the safety of electricity use.

[0066] The above description 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 principles 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 with easy-to-replace 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) comprising 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) being liftably connected to the side wall of the mounting frame (3), the mounting seat (5) being mounted at the center of the bottom of the mounting frame (3), the mounting seat (5) being provided with a slot (55) for mounting the terminal (2), the supporting assembly (4) comprising a mounting ring (42) arranged above the mounting seat (5), a plurality of mounting rods (41) being arranged in a rotationally symmetrical distribution 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) being provided at the center of the mounting ring (42); The four side walls of the installation frame (3) are provided with lifting channels (31) in correspondence, 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). The other end of the installation rod (41) is connected to the installation 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 in the side wall of the installation frame (3); 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 locking assembly (6) is rotationally symmetrical on the support assembly (4) and is connected to the support assembly (4). The number of the locking assemblies (6) 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 both the inner ring and the outer ring, a second gear (64) arranged inside the transmission gear ring (63) and capable of meshing with the transmission gear ring (63), a first gear (62) arranged outside the transmission gear ring (63) and capable of meshing with the transmission gear ring (63), a third gear (65) arranged above the mounting rod (41) and connected to the second gear (64) via the same rotation axis, a transmission rack (61) meshing with the first gear (62), and a locking rack (66) meshing with the third gear (65), wherein the first gear (62) is arranged below the mounting rod (41) and is rotatably connected to the mounting rod (41).

3. A pole-mounted transformer for easy replacement of terminal posts according to claim 2, 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 on the outside of the sliding rod (612), a second return spring (614) movably sleeved on the outside of 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).

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

5. The pole-mounted transformer with easy-to-replace terminal according to claim 2, 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 retaining ring (631) that cooperates with the rotating ring groove (46), and 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) that is rotatably connected, the first gear (62) is connected to the mounting rod (41) through the first rotating shaft (621), and the second gear (64) is provided with a second rotating shaft (641) that is rotatably connected to the mounting ring (42), and the 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 2, 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) can rotate freely in the pressing frame (651). The pressing frame (651) is provided with a moving channel for the locking rack (66) to move toward the center position of the insertion port (47).

7. The pole-mounted transformer with easy-to-replace terminal according to claim 1, characterized in that: A plurality of the fixing plates (52) are truncated 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 a limit block (523) capable of rotating 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 card (524). The upper ends of adjacent fixing plates (52) are connected by a tightening spring (54).

8. The pole-mounted transformer with easy-to-replace terminal according to claim 7, characterized in that: The terminal (2) includes a conductive column (21) and an insulating sleeve (22) arranged outside the conductive column (21), the surface of the insulating sleeve (22) is provided with a plurality of outer convex rings (221), 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 the inner wall of the fixing seat (51) is provided with a sealing groove (511) that cooperates with the sealing ring (23).

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