Prefabricated connecting structure and method for pole-mounted transformer substation

Abstract

The invention relates to the field of pole-mounted transformer substations, in particular to a pole-mounted transformer substation prefabricated connecting structure and a connecting method.The pole-mounted transformer substation prefabricated connecting structure comprises a pre-tightening mechanism, and the pre-tightening mechanism is used for conducting prefabricated connecting treatment on a transformer substation; the clamping mechanism is used for carrying out limiting and stable operation treatment on the pre-tightening mechanism; the positioning mechanism is used for positioning the mounting position of the transformer substation; according to the pole-mounted transformer substation prefabricated connecting structure and the connecting method, a threaded rod spirally enters a sleeve, at the moment, an extrusion sleeve fixedly connected to the outer side of the threaded rod extrudes a hoop, the hoop is clamped in the sleeve, the sleeve is clamped in the clamping mechanism, and therefore the pole-mounted transformer substation prefabricated connecting structure is formed, and the pole-mounted transformer substation prefabricated connecting structure is formed. Therefore, the clamping force and fastening treatment of the clamping hoop on the column body are indirectly increased, the rack can be stably and fixedly installed on the column body, and therefore the pretreatment effect on lifting of the transformer is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of a pole-mounted transformer substation, and in particular to a prefabricated connection structure and a connection method for a pole-mounted transformer substation. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core (magnetic core). Its main functions include voltage conversion, current conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. The installation of a pole-mounted transformer requires the use of a transformer installation auxiliary device.

[0003] There are several problems with the existing prefabricated connection structure of pole-mounted transformers: 1. Traditional transformer installation is achieved through lifting rings and lifting ropes, but this will cause the transformer to shake, resulting in unstable installation of the transformer, and then making it difficult to align the screw holes for fixing the transformer; 2. Traditional transformer prefabricated connections determine the position of the transformer by lifting, but this method affects the precise installation position of the transformer and is not convenient for subsequent installation processing. Summary of the invention

[0004] The present invention provides a prefabricated connection structure and connection method for a pole-mounted transformer substation to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a prefabricated connection structure of a transformer substation on a pole, comprising a pre-tightening mechanism, the pre-tightening mechanism being used for prefabricated connection processing of the transformer substation; A clamping mechanism, which is used to limit the position of the pre-tightening mechanism and stabilize its operation; A positioning mechanism, which is used to position the transformer substation installation location; The interior of the positioning mechanism is connected with a column via a fastener, and the outer side of the clamping mechanism is fixedly connected with the pre-tightening mechanism; A top fixing plate is fixedly installed on the top of the pre-tightening mechanism, a convex block is fixedly connected to the top of the top fixing plate, a concave frame is pressed and adapted on the top of the convex block, a transformer is fixedly connected to the top of the concave frame, and a hanging plate is fixedly connected to the top of the transformer; The pre-tightening mechanism comprises a support plate, the top of which is fixedly connected to the top fixing plate, both ends of the support plate are symmetrically connected to U-connecting plates, and the top of the U-connecting plate is fixedly connected to a top hole plate.

[0006] Preferably, a pre-tightening assembly is fixedly installed on the bottom of the U-connecting plate, a bolt member is threadedly connected to the top of the U-connecting plate, a U-shaped frame is fixedly connected to the bottom of the bolt member, a rotating shaft is fixedly connected to the inner side of the U-shaped frame, a gear is rotatably connected to the outer side of the rotating shaft, a rack is meshed and transmitted on the outer side of the gear, side grooves are symmetrically provided on both sides of the rack, a sliding connecting rod is slidingly adapted inside the side groove, and the end of the sliding connecting rod away from the side groove is fixedly connected to the top of the U-shaped frame.

[0007] Preferably, the clamping mechanism includes a clamp, which is symmetrically connected to both sides of the top fixing plate, a sleeve is fixedly connected to the outer side of the clamp, a threaded rod is threaded internally in the sleeve, an extrusion sleeve is fixedly connected to the outer side of the threaded rod, and the extrusion sleeve is extrusion-fitted with the clamp.

[0008] Preferably, a bearing is extruded and adapted at one end of the threaded rod away from the sleeve, a bearing plate is extruded and adapted at the outer side of the bearing, a double-headed rod is fixedly connected to the inner side of the bearing plate, a protective sleeve is fixedly connected to one end of the double-headed rod away from the bearing plate, and the protective sleeve is slidably adapted on the outer side of the sleeve, wherein a perforation is opened on the outer side of the sleeve.

[0009] Preferably, the pre-tightening assembly includes a square frame, which is fixedly connected to the bottom of the U-connecting plate, wherein a socket is provided at the top of the U-connecting plate, and the interior of the square frame is slidably adapted to bevel rods, and the outer end of the bevel rods is fixedly connected to a No. 1 elastic pad.

[0010] Preferably, a No. 1 plate is symmetrically connected to both sides of the oblique head rod, a return spring is fixedly connected to the inner side of the No. 1 plate, an end of the return spring away from the No. 1 plate is fixedly connected to the No. 2 plate, and the No. 2 plate is fixedly connected to the bottom of the U-connecting plate.

[0011] Preferably, the end of the No. 1 elastic pad away from the bevel rod is fixedly connected to a seesaw, the center part of the seesaw is rotatably connected to a support shaft, the support shaft is fixedly connected to the bottom of the U-connecting plate, the side of the seesaw away from the No. 1 elastic pad is fixedly connected to a spring, the end of the spring away from the seesaw is fixedly connected to a bottom plate, and the bottom plate is fixedly connected to the bottom of the U-connecting plate.

[0012] Preferably, one end of the seesaw away from the spring is fixedly connected to a No. 2 elastic pad, and the side of the No. 2 elastic pad away from the seesaw is fixedly connected to an interpenetrating rod, the outer side of the interpenetrating rod is sleeved with a rod sleeve, and the rod sleeve is fixedly connected to the bottom of the U-connecting plate.

[0013] Preferably, the positioning mechanism includes a double-headed plate, which is fixedly mounted on the outside of the column, and the bottom of the double-headed plate is fixedly connected with double oblique rods, and circular holes are opened on the outside of the double oblique rods. Accessories are provided under the double-headed plate, and the accessories are fixedly mounted on the outside of the column. Compensation plates are symmetrically connected on both sides of the accessories, and the outside of the compensation plate is fixedly connected with a cylinder, and an embedded rod is inserted into the inside of the cylinder.

[0014] A method for prefabricating connection of a pole-mounted transformer substation comprises the following steps: Step 1: Tightening treatment, by rotating the threaded rod forward, the threaded rod spirals into the inside of the sleeve, and then the extrusion sleeve fixedly connected to the outside of the threaded rod will squeeze the clamp, thereby indirectly increasing the clamping force and tightening treatment of the column by the clamp; Step 2: Preparatory calibration. As the threaded rod extends into the interior of the sleeve, the bearing plate connected to the outside of the threaded rod through the bearing will move forward. Then the double-headed rod fixedly connected to the inner side of the bearing plate will carry the protective sleeve fixedly connected to the other end and move forward along the surface of the sleeve, so that the perforations opened on the surface of the sleeve will be exposed. At this time, the two oppositely arranged perforations are used to determine whether the clamp has tilted or deflected problems. Step 3: Lifting process: lift the bottom of the support plate by using external lifting equipment, so that the gear connected to the outer side of the shaft will move upward along the rack, thereby realizing the smooth lifting and lowering of the transformer position; Step 4: Prefabricated connection, the seesaw rotates counterclockwise with the support shaft as the fulcrum and compresses the spring. The other end of the seesaw will squeeze the No. 2 elastic pad, causing the inserted rod fixedly connected to the other end of the No. 2 elastic pad to move forward along the rod sleeve until it is inserted into the circular hole opened on the outside of the double oblique rod, thereby realizing the prefabricated connection processing of the transformer location.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The threaded rod spirally enters the interior of the sleeve. At this time, the extrusion sleeve fixedly connected to the outside of the threaded rod will squeeze the clamp, thereby indirectly increasing the clamping force and tightening of the column, so that the rack will be firmly fixed on the column, thereby playing a pre-treatment role in the lifting and lowering of the transformer.

[0016] 2. The perforations on the surface of the sleeve will be exposed, and the perforations inside the clamping mechanisms on the two columns will be exposed simultaneously, thereby relying on the two oppositely arranged perforations to determine whether the clamp has tilt or deflection problems.

[0017] 3. The bottom of the support plate is lifted by external lifting equipment, so that the gear connected to the outside of the shaft moves upward along the rack, thereby achieving a smooth lifting and lowering of the transformer position.

[0018] 4. The through rod fixedly connected to the other end of the No. 2 elastic pad will move forward along the rod sleeve until it is inserted into the circular hole opened on the outside of the double oblique rod, thereby playing a prefabricated processing role in the connection and fixation of the transformer and achieving the purpose of determining the position of the transformer and pre-connecting it. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the external structure of a prefabricated connection structure of a pole-mounted transformer substation according to the present invention.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.

[0021] Figure 3 It is a schematic diagram of the enlarged structure of the transformer of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the preload mechanism of the present invention.

[0023] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 6 It is a schematic cross-sectional structure diagram of the pre-tightening part of the components of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0026] Figure 8 It is a schematic cross-sectional structural diagram of the clamping mechanism of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point B in the middle.

[0028] Fig.10 It is a structural schematic diagram of the pre-tightening assembly of the present invention.

[0029] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0030] Fig.12 It is a schematic cross-sectional structural diagram of the preload assembly of the present invention.

[0031] Fig.13 It is a structural schematic diagram of the positioning mechanism of the present invention.

[0032] Fig.14 For the present invention Fig.13 Schematic diagram of the enlarged structure at D in the middle.

[0033] In the figure: 1, transformer; 2, preload mechanism; 3, column; 4, clamping mechanism; 5, positioning mechanism; 6, hanging plate; 7, concave frame; 8, convex block; 9, top fixing plate; 21, support plate; 22, U-shaped connecting plate; 23, preload assembly; 24, top hole plate; 25, bolt member; 26, U-shaped frame; 27, rotating shaft; 28, gear; 29, rack; 20, side groove; 201, sliding connecting rod; 41, clamp; 42, sleeve; 43, threaded rod; 44, extrusion sleeve; 45, bearing; 46, bearing plate; 47, double Head rod; 48, protective cover; 49, perforation; 231, square frame; 232, oblique head rod; 233, No. 1 plate; 234, return spring; 235, No. 2 plate; 236, No. 1 elastic pad; 237, seesaw; 238, support shaft; 239, spring; 230, bottom plate; 2301, No. 2 elastic pad; 2302, rod sleeve; 2303, inserted rod; 2304, jack; 51, double-headed plate; 52, double oblique rods; 53, round hole; 54, accessories; 55, compensation plate; 56, cylinder; 57, embedded rod. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 14 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes a pre-tightening mechanism 2, which is used for prefabricated connection processing of transformer substation; A clamping mechanism 4, which is used to limit the position of the pre-tightening mechanism 2 and stabilize its operation; A positioning mechanism 5, which is used for positioning the installation position of the transformer substation; The interior of the positioning mechanism 5 is connected to the column 3 via a fastener, and the outer side of the clamping mechanism 4 is fixedly connected to the pre-tightening mechanism 2; A top fixing plate 9 is fixedly installed on the top of the preload mechanism 2, a protrusion 8 is fixedly connected to the top of the top fixing plate 9, a concave frame 7 is extruded and adapted on the top of the protrusion 8, a transformer 1 is fixedly connected to the top of the concave frame 7, and a hanging plate 6 is fixedly connected to the top of the transformer 1.

[0036] The pre-tightening mechanism 2 comprises a support plate 21, the top of the support plate 21 is fixedly connected to the top fixing plate 9, both ends of the support plate 21 are symmetrically connected with U-connecting plates 22, the top of the U-connecting plate 22 is fixedly connected with a top hole plate 24, the bottom of the U-connecting plate 22 is fixedly installed with a pre-tightening assembly 23, the top of the U-connecting plate 22 is threadedly connected with a bolt member 25, the bottom of the bolt member 25 is fixedly connected with a U-shaped frame 26, the inner side of the U-shaped frame 26 is fixedly connected with a rotating shaft 27, the outer side of the rotating shaft 27 is rotatably connected with a gear 28, the outer side of the gear 28 is meshed with a rack 29, both sides of the rack 29 are symmetrically provided with side grooves 20, and the inner side of the side groove 20 is adapted to slide with a sliding connecting rod 201 The end of the sliding link 201 away from the side groove 20 is fixedly connected to the top of the U-shaped frame 26, and the concave frame 7 fixedly connected to the bottom of the transformer 1 is placed on the protrusion 8 and adapted thereto, wherein the bottom of the protrusion 8 is connected to the support plate 21 through the top fixing plate 9, and at the same time, the two ends of the support plate 21 are connected to the U-connecting plate 22, and the surface of the U-connecting plate 22 is connected to the U-shaped frame 26 through the bolt member 25. Therefore, the bottom of the support plate 21 is lifted by an external lifting device, so that the gear 28 rotatably connected to the outer side of the rotating shaft 27 will move upward along the rack 29, thereby playing a role in smoothly lifting and lowering the position of the transformer 1.

[0037] like Figure 7 , Figure 8 and Fig. 9As shown, the clamping mechanism 4 includes a clamp 41, which is symmetrically connected to both sides of the top fixing plate 9, a sleeve 42 is fixedly connected to the outside of the clamp 41, a threaded rod 43 is threadedly connected to the inside of the sleeve 42, and an extrusion sleeve 44 is fixedly connected to the outside of the threaded rod 43. The positioning mechanism 5 is installed on the column 3 through the connecting piece, and then the clamp 41 is opened, wherein the clamp 41 has a certain toughness, and is sleeved on the column 3, and then the threaded rod 43 is rotated forwardly, so that the threaded rod 43 spirals into the sleeve The inside of the cylinder 42, at this time, the extrusion sleeve 44 fixedly connected to the outside of the threaded rod 43 will squeeze the clamp 41, wherein the portion where the threaded rod 43 and the extrusion sleeve 44 are connected does not have threads, thereby indirectly increasing the clamping force and tightening treatment of the clamp 41 on the column 3, so that the rack 29 will be firmly fixed on the column 3, thereby playing a pre-treatment role in the lifting and lowering of the transformer 1, the extrusion sleeve 44 is extruded and adapted with the clamp 41, and the end of the threaded rod 43 away from the sleeve 42 is extruded and adapted with a bearing 45, and the bearing 4 5 is extruded and adapted with a bearing plate 46, and a double-headed rod 47 is fixedly connected to the inner side of the bearing plate 46. A protective sleeve 48 is fixedly connected to one end of the double-headed rod 47 away from the bearing plate 46. The protective sleeve 48 is slidably adapted to the outer side of the sleeve 42, wherein a through hole 49 is opened on the outer side of the sleeve 42. At the same time, as the threaded rod 43 extends into the interior of the sleeve 42, the bearing plate 46 connected to the outer side of the threaded rod 43 through the bearing 45 will move forward, and then the double-headed rod 47 fixedly connected to the inner side of the bearing plate 46 will move forward. 7 will bring the protective sleeve 48 fixedly connected to the other end thereof and move forward along the surface of the sleeve 42, so that the through-holes 49 provided on the surface of the sleeve 42 will be exposed, and at this time the through-holes 49 inside the clamping mechanisms 4 on the two columns 3 will be exposed simultaneously, thereby playing the role of judging whether the clamp 41 has a tilt or deflection problem by means of the two oppositely arranged through-holes 49, so as to facilitate timely modification for subsequent problems, wherein the exposure of the through-holes 49 means that the clamp 41 has not completely locked the column 3.

[0038] like Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, the preload assembly 23 includes a square frame 231, which is fixedly connected to the bottom of the U-connecting plate 22, wherein a socket 2304 is provided on the top of the U-connecting plate 22, and an inclined rod 232 is slidably adapted inside the square frame 231, and an outer end of the inclined rod 232 is fixedly connected to a No. 1 elastic pad 236, and both sides of the inclined rod 232 are symmetrically connected to a No. 1 patch plate 233, and a return spring 234 is fixedly connected to the inner side of the No. 1 patch plate 233, and a No. 2 patch plate 235 is fixedly connected to the end of the return spring 234 away from the No. 1 patch plate 233, and the No. 2 patch plate 235 is fixedly connected to the bottom of the U-connecting plate 22, and the No. 1 elastic pad 236 is away from One end of the inclined head rod 232 is fixedly connected to a seesaw 237, and the central part of the seesaw 237 is rotatably connected to a support shaft 238, and the support shaft 238 is fixedly connected to the bottom of the U-connecting plate 22. The side of the seesaw 237 away from the first elastic pad 236 is fixedly connected to a spring 239, and the end of the spring 239 away from the seesaw 237 is fixedly connected to the bottom plate 230, and the bottom plate 230 is fixedly connected to the bottom of the U-connecting plate 22, and the end of the seesaw 237 away from the spring 239 is fixedly connected to the second elastic pad 2301, and the side of the second elastic pad 2301 away from the seesaw 237 is fixedly connected to the interlaced rod 2303, and the outer side of the interlaced rod 2303 is sleeved with a rod The rod sleeve 2302 is fixedly connected to the bottom of the U-connecting plate 22. When the transformer 1 moves upward to the specified position, that is, the position of the positioning mechanism 5, the double oblique rod 52 fixedly connected to the bottom of the double-headed plate 51 will pass through the insertion hole 2304 and hit the oblique head rod 232, wherein the contact surfaces between the double oblique rod 52 and the oblique head rod 232 are both inclined surfaces, and the impacted oblique head rod 232 will move outward along the square frame 231, wherein the outer side of the oblique head rod 232 is connected to the reset spring 234 through the first posting plate 233, and the reset spring 234 plays a role in resetting the oblique head rod 232. The No. 1 elastic pad 236 fixedly connected to the other end of the inclined rod 232 will hit the seesaw 237, and then the seesaw 237 will rotate counterclockwise through the support shaft 238 and compress the spring 239. In addition, the other end of the seesaw 237 will squeeze the No. 2 elastic pad 2301, causing the inserted rod 2303 fixedly connected to the other end of the No. 2 elastic pad 2301 to move forward along the rod sleeve 2302 until it is inserted into the circular hole 53 opened on the outer side of the double inclined rod 52, thereby playing a prefabrication processing role in connecting and fixing the transformer 1 and achieving the purpose of determining the position of the transformer 1 and pre-connecting it.

[0039] The positioning mechanism 5 includes a double-headed plate 51, which is fixedly installed on the outer side of the column 3. A double oblique rod 52 is fixedly connected to the bottom of the double-headed plate 51. A round hole 53 is opened on the outer side of the double oblique rod 52. An accessory 54 is arranged below the double-headed plate 51. The accessory 54 is fixedly installed on the outer side of the column 3. Compensation plates 55 are symmetrically connected to both sides of the accessory 54. A cylinder 56 is fixedly connected to the outer side of the compensation plate 55. An embedded rod 57 is inserted into the inside of the cylinder 56. Then, the embedded rod 57 is pushed inward along the cylinder 56, so that the embedded rod 57 will extend out of the compensation plate 55. Finally, the embedded rod 57 will pass through the top hole plate 24 to realize the positioning processing of the U-connecting plate 22 and the support plate 21.

[0040] When the present invention is in use: first, the positioning mechanism 5 is installed on the column 3 through the connecting piece, and then the clamp 41 is opened and sleeved on the column 3, and then the threaded rod 43 is rotated forward so that the threaded rod 43 spirals into the interior of the sleeve 42. At this time, the extrusion sleeve 44 fixedly connected to the outer side of the threaded rod 43 will squeeze the clamp 41, thereby indirectly increasing the clamping and tightening of the column 3 by the clamp 41. At the same time, as the threaded rod 43 extends into the interior of the sleeve 42, the bearing plate 46 connected to the outer side of the threaded rod 43 through the bearing 45 will move forward, and then the double-headed rod 47 fixedly connected to the inner side of the bearing plate 46 will carry the protective sleeve 48 fixedly connected to its other end, and move forward along the surface of the sleeve 42, so that the through hole 49 opened on the surface of the sleeve 42 will be exposed.

[0041] The concave frame 7 fixedly connected to the bottom of the transformer 1 is placed on the protrusion 8 and matched therewith, wherein the bottom of the protrusion 8 is connected to the support plate 21 through the top fixing plate 9, and both ends of the support plate 21 are connected to the U-connecting plate 22, and the surface of the U-connecting plate 22 is connected to the U-shaped frame 26 through the bolt member 25. Therefore, the bottom of the support plate 21 is lifted by an external lifting device, so that the gear 28 rotatably connected to the outer side of the rotating shaft 27 will move upward along the rack 29, thereby realizing the lifting of the transformer 1. When the transformer 1 moves upward to the specified position, that is, the position of the positioning mechanism 5, the double oblique rod 52 fixedly connected to the bottom of the double-headed plate 51 will pass through the insertion hole 2304 and hit the oblique head rod 232, and the hit oblique head rod 232 will move outward along the square frame 231, and the No. 1 elastic pad 236 fixedly connected to the other end of the oblique head rod 232 will hit the seesaw 237, and then the seesaw 237 will rotate counterclockwise through the support shaft 238 and compress the spring 239. In addition, the other end of the seesaw 237 will squeeze the No. 2 elastic pad 2301, causing the inserted rod 2303 fixedly connected to the other end of the No. 2 elastic pad 2301 to move forward along the rod sleeve 2302 until it is inserted into the circular hole 53 opened on the outer side of the double oblique rod 52. Then, the embedded rod 57 is pushed inward along the cylinder 56 so that the embedded rod 57 extends out from the compensation plate 55 , and finally the embedded rod 57 passes through the top hole plate 24 to realize the positioning of the U-connecting plate 22 and the support plate 21 .

[0042] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A prefabricated connection structure for a pole-mounted transformer substation, characterized in that: include: A pre-tightening mechanism (2), the pre-tightening mechanism (2) being used for prefabricated connection processing of a transformer substation; A clamping mechanism (4), the clamping mechanism (4) being used for limiting the position and stabilizing the operation of the pre-tightening mechanism (2); A positioning mechanism (5), the positioning mechanism (5) is used to position the installation position of the transformer substation; The interior of the positioning mechanism (5) is connected to a column (3) via a fastener, and the outer side of the clamping mechanism (4) is fixedly connected to the pre-tightening mechanism (2); A top fixing plate (9) is fixedly mounted on the top of the pre-tightening mechanism (2), a convex block (8) is fixedly connected to the top of the top fixing plate (9), a concave frame (7) is extruded and adapted on the top of the convex block (8), a transformer (1) is fixedly connected to the top of the concave frame (7), and a hanging plate (6) is fixedly connected to the top of the transformer (1); The pre-tightening mechanism (2) comprises a support plate (21), the top of the support plate (21) is fixedly connected to the top fixing plate (9), both ends of the support plate (21) are symmetrically connected to U-connecting plates (22), and the top of the U-connecting plate (22) is fixedly connected to a top hole plate (24).

2. A prefabricated connection structure for a pole-mounted transformer substation according to claim 1, characterized in that: A pre-tightening assembly (23) is fixedly installed at the bottom of the U-connecting plate (22); a bolt member (25) is threadedly connected to the top of the U-connecting plate (22); a U-shaped frame (26) is fixedly connected to the bottom of the bolt member (25); a rotating shaft (27) is fixedly connected to the inner side of the U-shaped frame (26); a gear (28) is rotatably connected to the outer side of the rotating shaft (27); a rack (29) is meshed and driven on the outer side of the gear (28); side grooves (20) are symmetrically provided on both sides of the rack (29); a sliding connecting rod (201) is slidably adapted inside the side groove (20); and one end of the sliding connecting rod (201) away from the side groove (20) is fixedly connected to the top of the U-shaped frame (26).

3. The prefabricated connection structure of a pole-mounted transformer substation according to claim 1 is characterized in that: The clamping mechanism (4) comprises a clamp (41), the clamp (41) being symmetrically connected to two sides of the top fixing plate (9), a sleeve (42) being fixedly connected to the outside of the clamp (41), a threaded rod (43) being internally threadedly connected to the sleeve (42), an extrusion sleeve (44) being fixedly connected to the outside of the threaded rod (43), and the extrusion sleeve (44) being extruded and adapted to fit the clamp (41).

4. A prefabricated connection structure for a pole-mounted transformer substation according to claim 3, characterized in that: A bearing (45) is extruded and fitted on one end of the threaded rod (43) away from the sleeve (42), a bearing plate (46) is extruded and fitted on the outer side of the bearing (45), a double-headed rod (47) is fixedly connected to the inner side of the bearing plate (46), a protective sleeve (48) is fixedly connected to one end of the double-headed rod (47) away from the bearing plate (46), and the protective sleeve (48) is slidably fitted on the outer side of the sleeve (42), wherein a through hole (49) is provided on the outer side of the sleeve (42).

5. The prefabricated connection structure of a pole-mounted transformer substation according to claim 2 is characterized in that: The pre-tightening assembly (23) comprises a square frame (231), wherein the square frame (231) is fixedly connected to the bottom of the U-connecting plate (22), wherein a plug hole (2304) is provided at the top of the U-connecting plate (22), and an inclined rod (232) is slidably adapted inside the square frame (231), wherein the outer end of the inclined rod (232) is fixedly connected to a No. 1 elastic pad (236).

6. A prefabricated connection structure for a pole-mounted transformer substation according to claim 5, characterized in that: A first post plate (233) is symmetrically connected to both sides of the oblique head rod (232); a return spring (234) is fixedly connected to the inner side of the first post plate (233); an end of the return spring (234) away from the first post plate (233) is fixedly connected to a second post plate (235); and the second post plate (235) is fixedly connected to the bottom of the U-connecting plate (22).

7. The prefabricated connection structure of a pole-mounted transformer substation according to claim 5, characterized in that: One end of the first elastic pad (236) away from the oblique rod (232) is fixedly connected to a seesaw (237); a central portion of the seesaw (237) is rotatably connected to a support shaft (238); the support shaft (238) is fixedly connected to the bottom of the U-connecting plate (22); a side of the seesaw (237) away from the first elastic pad (236) is fixedly connected to a spring (239); one end of the spring (239) away from the seesaw (237) is fixedly connected to a bottom plate (230); and the bottom plate (230) is fixedly connected to the bottom of the U-connecting plate (22).

8. The prefabricated connection structure of a pole-mounted transformer substation according to claim 7, characterized in that: One end of the seesaw (237) away from the spring (239) is fixedly connected to a No. 2 elastic pad (2301), and one side of the No. 2 elastic pad (2301) away from the seesaw (237) is fixedly connected to an insertion rod (2303). The outer side of the insertion rod (2303) is sleeved with a rod sleeve (2302), and the rod sleeve (2302) is fixedly connected to the bottom of the U-connecting plate (22).

9. The prefabricated connection structure of a pole-mounted transformer substation according to claim 1, characterized in that: The positioning mechanism (5) comprises a double-headed plate (51), the double-headed plate (51) being fixedly mounted on the outside of the column (3), the bottom of the double-headed plate (51) being fixedly connected to a double oblique rod (52), the outer side of the double oblique rod (52) being provided with a circular hole (53), an accessory (54) being arranged below the double-headed plate (51), the accessory (54) being fixedly mounted on the outside of the column (3), both sides of the accessory (54) being symmetrically connected to compensation plates (55), the outer side of the compensation plate (55) being fixedly connected to a cylinder (56), the interior of the cylinder (56) being plugged with an embedded rod (57).

10. A method for prefabricated connection of a pole-mounted transformer substation, used for the prefabricated connection structure of a pole-mounted transformer substation according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: tightening the clamp (41), by rotating the threaded rod (43) in the forward direction so that the threaded rod (43) spirals into the interior of the sleeve (42), and then the extrusion sleeve (44) fixedly connected to the outer side of the threaded rod (43) squeezes the clamp (41), thereby indirectly increasing the clamping force of the clamp (41) on the column (3) and tightening the clamp (41); Step 2: Preparatory calibration. As the threaded rod (43) extends into the interior of the sleeve (42), the bearing plate (46) connected to the outer side of the threaded rod (43) through the bearing (45) moves forward. Then, the double-headed rod (47) fixedly connected to the inner side of the bearing plate (46) moves forward along the surface of the sleeve (42) with the protective sleeve (48) fixedly connected to the other end thereof. The through hole (49) provided on the surface of the sleeve (42) is exposed. At this time, it is determined whether the clamp (41) has a tilt or deflection problem by relying on the two oppositely arranged through holes (49); Step 3: lifting and lowering, using external lifting equipment to lift the bottom of the support plate (21), so that the gear (28) connected to the outer side of the rotating shaft (27) moves upward along the rack (29), thereby achieving a smooth lifting and lowering process of the transformer (1); Step 4: Prefabricated connection, the seesaw (237) rotates counterclockwise with the support shaft (238) as the fulcrum, and the spring (239) is compressed. In addition, the other end of the seesaw (237) squeezes the second elastic pad (2301), causing the insertion rod (2303) fixedly connected to the other end of the second elastic pad (2301) to move forward along the rod sleeve (2302) until it is inserted into the circular hole (53) opened on the outer side of the double oblique rod (52), thereby realizing the prefabricated connection processing of the position of the transformer (1).

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