CN219800637U - Transformer bushing mounting flange - Google Patents

Abstract

The utility model relates to a transformer bushing mounting flange, which relates to the technical field of transformer bushings and comprises a flange body, two groups of clamping pieces, two groups of conducting pieces, a clamping driving mechanism and a locking mechanism, wherein the two groups of clamping pieces are arranged on the flange body in an openable manner, the clamping driving mechanism is arranged on the flange body and is in transmission connection with the two groups of clamping pieces and is used for driving the two groups of clamping pieces to clamp and close, the two groups of conducting pieces are fixedly connected with the two groups of clamping pieces respectively, the two groups of conducting pieces are used for being detachably and electrically connected with a terminal post of a transformer bushing, and the locking mechanism is arranged on the flange body and is connected with the two groups of clamping pieces and used for locking the open state of the two groups of clamping pieces. The operation is very convenient and fast, the labor intensity of workers can be effectively reduced, and the test efficiency of the transformer bushing is improved.

Description

Transformer bushing mounting flange

Technical Field

The utility model relates to the technical field of transformer bushings, in particular to a transformer bushing mounting flange.

Background

The transformer bushing is a main insulating device outside the transformer box, outgoing lines of the transformer winding must pass through the insulating bushing, so that the outgoing lines and the outgoing lines are insulated from the transformer shell, the outgoing lines are fixed, the insulating bushing is divided into a pure porcelain bushing, an oil-filled bushing, a capacitor bushing and the like according to different voltage grades, wherein the capacitor bushing consists of a wiring terminal, an upper porcelain bushing, a lower porcelain bushing, a capacitor core, a conducting rod, insulating oil and the like, the capacitor core is formed by winding a plurality of metal screens and insulating layers at intervals, a last screen is the last screen in the metal screens and is used for being connected with the ground in an equipotential manner, the ground is connected in operation, the ground is released during a preventive test so as to measure the capacity and dielectric loss of the transformer bushing, and the capacitance and dielectric loss of the capacitor screen can be measured through the last screen, so that the insulating condition of the capacitor screen is judged, and the insulating performance is mastered. The end screen is grounded through the end screen binding post, and the common grounding mode of the end screen binding post can be divided into an exposed connection type (external type), a metal outer cover closed type (internal type) and a common grounding type (long-term grounding of the end by spring pressure, and the end grounding point is disconnected by a special tool during test). The exposed grounded terminal post is connected with the grounded base through a grounding metal sheet or a grounding metal flexible wire when in grounding, the grounding metal sheet or the grounding metal flexible wire is connected with the terminal post through a nut, the nut is unscrewed firstly through tools such as a spanner when in test, the grounding metal sheet or the grounding metal flexible wire can be separated from the terminal post of the end screen, and after the test is finished, the nut is required to be screwed down again to connect the grounding metal sheet or the grounding metal flexible wire with the terminal post of the end screen, so that the operation is complicated, the labor intensity of workers is increased, and the test efficiency of the transformer sleeve is reduced.

Disclosure of Invention

The utility model aims to provide a transformer bushing mounting flange which is used for solving the problems that when a transformer bushing in the prior art is tested by adopting an exposed grounded type end screen binding post, the operation is complicated, the labor intensity of staff is high and the test efficiency of the transformer bushing is low.

The utility model provides a transformer bushing mounting flange which adopts the following technical scheme:

the utility model provides a transformer bushing mounting flange, includes flange body, two sets of clamping pieces, two sets of electrically conductive pieces, centre gripping actuating mechanism and locking mechanical system, two sets of the clamping piece is openable and closable to be located the flange body, centre gripping actuating mechanism locates the flange body, and with two sets of the clamping piece transmission is connected for drive two sets of the clamping piece presss from both sides tightly to be closed, two sets of electrically conductive piece respectively with two sets of the clamping piece rigid coupling, two sets of electrically conductive piece is used for being connected with transformer bushing's end screen terminal detachable centre gripping electricity, locking mechanical system locates the flange body, locking mechanical system with two sets of the clamping piece is connected, is used for locking two sets of the open state of clamping piece.

Through adopting above-mentioned technical scheme, press from both sides tight closure through two sets of holders of centre gripping actuating mechanism drive, and then drive two sets of electrically conductive pieces and terminal centre gripping electricity and be connected, ground connection with two sets of electrically conductive pieces again can realize the operation ground connection of terminal. When the preventive test is required, the clamping driving mechanism is operated to open the two groups of clamping pieces, the two groups of conductive pieces are separated from the terminal of the terminal, the terminal of the terminal is disconnected and grounded, then the locking mechanism is used for locking the open states of the two groups of clamping pieces, the terminal of the terminal can be in a state of being disconnected and grounded for a long time, then a worker can electrically connect the measuring instrument with the terminal of the terminal, and the capacitance and dielectric loss of the transformer bushing are measured through the terminal. After the measurement is finished, the two groups of clamping pieces are released from the open state through the locking mechanism, so that the two groups of clamping pieces are clamped and closed again under the action of the clamping driving mechanism, the two groups of conductive pieces are electrically connected with the terminal post of the end screen, the operation of the terminal post of the end screen is restored to be grounded, the traditional grounding connection mode is avoided, nuts are screwed through tools such as a spanner when the traditional grounding connection mode is used for testing, the operation is very convenient and fast, the labor intensity of workers can be effectively relieved, and the testing efficiency of the transformer sleeve is improved.

Optionally, two sets of electrically conductive piece are equipped with the ground connection terminal respectively, the ground connection terminal is used for the ground connection, electrically conductive piece is equipped with the arcwall face that can laminate mutually with transformer sleeve's end screen terminal's lateral wall.

Through adopting above-mentioned technical scheme, be connected ground terminal through ground connection metal patchcord with grounded base, can control the ground state of last screen terminal through the contact and the separation state of control conducting piece and last screen terminal. The arc-shaped surface of the conductive piece is well attached to the outer side wall of the terminal post, so that the contact area can be increased, and the conductive connection effect of the conductive piece and the terminal post is ensured.

Optionally, two sets of the holder is equipped with first gear respectively, first gear is equipped with the pivot respectively, the flange body is equipped with the support, first gear is located through the pivot rotation the support, two sets of on the holder first gear intermeshing.

Through adopting above-mentioned technical scheme, two sets of holders carry out intermesh through first gear, through controlling that one of them sets of holders rotate around the pivot and can drive another group and follow its synchronous rotation to can retrench transmission structure, save manufacturing cost, reduce occupation space.

Optionally, the clamping driving mechanism comprises a rack and a spring, wherein a group of the rotating shafts on the clamping pieces are provided with second gears, the rack is slidably arranged on the support, the rack is meshed with the second gears, the support is provided with a limiting part, and two ends of the spring are respectively connected with the limiting part and one end part of the rack.

Through adopting above-mentioned technical scheme, provide an elasticity through the spring for the rack to provide a counter-clockwise rotation's trend about the pivot through the rack to second gear and the first gear that links to each other with it, and then provide the driving force of opposite direction centre gripping for two sets of holders, make two sets of holders can be in the clamping closed state all the time under the condition that does not have external force to act on to intervene, ensure the clamping electricity connected state of two sets of electrically conductive pieces and last screen terminal.

Optionally, the spacing portion is equipped with the through-hole, the rack is equipped with the guide post, the guide post slides and wears to locate the through-hole, the one end of guide post be equipped with can with the anticreep portion of spacing portion looks butt, the spring housing is located the guide post.

Through adopting above-mentioned technical scheme, wear to locate the through-hole through the guide post, can play the guide effect to the motion track of rack, through setting up anticreep portion in the one end of guide post, can play spacing effect to the rack, prevent that the rack from breaking away from on the support.

Optionally, the locking mechanical system includes the locking pin, the support is equipped with two sets of spacing bosss, the rack slides and locates two sets of between the spacing boss, the locking pin is located spacing boss, the rack is equipped with the locking hole, the locking pin with the locking hole corresponds.

Through adopting above-mentioned technical scheme, when the rack removes to the coaxial relative position of locking pin and locking hole, control locking pin inserts in the locking hole, locks the rack, makes two sets of holders keep opening the state, and the staff of being convenient for carries out the electricity with measuring instrument and last screen terminal and is connected and develop measurement work.

Optionally, the locking mechanical system still includes support and pressure spring, the support set firmly in spacing boss, the support is equipped with the guiding hole, spacing boss is equipped with the pinhole, the locking pin insert locate the guiding hole with the pinhole, the locking pin is equipped with the step face, the pressure spring cover is located the locking pin, the both ends of pressure spring respectively with the support with step face butt, the one end of locking pin is equipped with the handle.

Through adopting above-mentioned technical scheme, when the rack removes to the coaxial relative position of locking pin and locking hole, the locking pin realizes quick locking in the locking hole under the elasticity effect of pressure spring automatic insertion, when needs are to the locking pin unblock, only need the handheld handle overcome the elasticity pulling locking pin of pressure spring, with the locking pin can realize quick unblock from locking hole back out, consequently the operation is very convenient laborsaving, has effectively alleviateed staff's intensity of labour, has improved transformer bushing's test efficiency.

Optionally, the limiting boss is provided with a screw hole, an external thread is arranged on the peripheral wall of the locking pin, and the locking pin is in threaded connection with the screw hole through the external thread.

Through adopting above-mentioned technical scheme, when needs peg graft in the locking hole with the locking pin, move the rack to the coaxial relative position of locking pin and locking hole earlier, screw the locking pin afterwards, under the interact of external screw thread and screw, drive the locking pin and follow its axial direction and remove, peg graft the locking pin in the locking hole and realize the locking to realize the firm locking of locking pin.

In summary, the present utility model includes at least one of the following beneficial technical effects: when the preventive test is required, the clamping driving mechanism is operated to open the two groups of clamping pieces, the two groups of conductive pieces are separated from the terminal of the terminal, the terminal of the terminal is disconnected and grounded, then the locking mechanism is used for locking the open states of the two groups of clamping pieces, the terminal of the terminal can be in a state of being disconnected and grounded for a long time, then a worker can electrically connect the measuring instrument with the terminal of the terminal, and the capacitance and dielectric loss of the transformer bushing are measured through the terminal. After the measurement is finished, the two groups of clamping pieces are released from the open state through the locking mechanism, so that the two groups of clamping pieces are clamped and closed again under the action of the clamping driving mechanism, the two groups of conductive pieces are electrically connected with the terminal post of the end screen, the operation of the terminal post of the end screen is restored to be grounded, the traditional grounding connection mode is avoided, nuts are screwed through tools such as a spanner when the traditional grounding connection mode is used for testing, the operation is very convenient and fast, the labor intensity of workers can be effectively relieved, and the testing efficiency of the transformer sleeve is improved.

Drawings

FIG. 1 is an isometric view of the present utility model from a first perspective;

FIG. 2 is a cross-sectional view of a second view of the present utility model;

FIG. 3 is a cross-sectional view of a third view of the present utility model;

FIG. 4 is an enlarged schematic view of a portion A of FIG. 3;

FIG. 5 is a schematic diagram of the connection of the present utility model to a transformer bushing;

fig. 6 is a partially enlarged schematic view of the portion B in fig. 5.

In the drawing the view of the figure,

10. a flange body; 11. a support; 12. a limit part; 121. a through hole; 13. a limit boss; 131. a pin hole;

20. a clamping member; 21. a first gear; 22. a rotating shaft; 23. a second gear;

30. a conductive member; 31. a ground terminal; 32. an arc surface;

40. a clamping driving mechanism; 41. a rack; 411. a guide post; 412. an anti-falling part; 413. a locking hole; 42. a spring;

50. a locking mechanism; 51. a locking pin; 511. a step surface; 512. a handle; 52. a bracket; 521. a guide hole; 53. a pressure spring;

60. a transformer bushing; 61. and the terminal post of the end screen.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1 to 6.

The embodiment of the utility model discloses a transformer bushing mounting flange.

Referring to fig. 1, a transformer bushing mounting flange includes a flange body 10, two sets of clamping members 20, two sets of conductive members 30, a clamping driving mechanism 40 and a locking mechanism 50, wherein the two sets of clamping members 20 are arranged on the flange body 10 in an openable manner, the clamping driving mechanism 40 is arranged on the flange body 10 and is in transmission connection with the two sets of clamping members 20 for driving the two sets of clamping members 20 to clamp and close, the two sets of conductive members 30 are respectively fixedly connected with the two sets of clamping members 20, the two sets of conductive members 30 are used for detachably clamping and electrically connecting with a terminal 61 of a transformer bushing 60, the locking mechanism 50 is arranged on the flange body 10, and the locking mechanism 50 is connected with the two sets of clamping members 20 for locking the opened state of the two sets of clamping members 20.

The transformer bushing mounting flange can be fixedly connected with the transformer bushing 60 by adopting the epoxy pouring sealant in an adhering way, after the transformer bushing mounting flange is fixedly connected with the transformer bushing 60, the two groups of conductive pieces 30 are positioned on two sides of the end screen binding post 61 of the transformer bushing 60, the clamping driving mechanism 40 drives the two groups of clamping pieces 20 to clamp and close, further drives the two groups of conductive pieces 30 to clamp and electrically connect with the end screen binding post 61, and then the two groups of conductive pieces 30 are grounded, so that the operation grounding of the end screen binding post 61 can be realized. When a preventive test is required, the clamping driving mechanism 40 is operated to open the two groups of clamping members 20, the two groups of conductive members 30 are separated from the terminal post 61, the terminal post 61 is disconnected and grounded, then the open state of the two groups of clamping members 20 is locked by the locking mechanism 50, the terminal post 61 can be in a state of being disconnected and grounded for a long time, then a worker can electrically connect the measuring instrument with the terminal post 61, and the capacitance and dielectric loss of the transformer bushing 60 are measured through the terminal. After the measurement is finished, the two groups of clamping pieces 20 are released from the open state through the locking mechanism 50, so that the two groups of clamping pieces 20 are clamped and closed again under the action of the clamping driving mechanism 40, the two groups of conducting pieces 30 are electrically connected with the end screen binding post 61 in a clamping mode, the end screen binding post 61 is restored to be grounded in operation, the traditional grounding connection mode is avoided, nuts are required to be screwed through tools such as a spanner in the test process, the operation is very convenient and fast, the labor intensity of workers can be effectively reduced, and the test efficiency of the transformer bushing is improved.

Referring to fig. 1, the two sets of conductive members 30 are respectively provided with a ground terminal 31, the ground terminal 31 is used for grounding, and the conductive members 30 are provided with an arc-shaped surface 32 capable of being attached to the outer side wall of the end shield terminal 61 of the transformer bushing 60.

The conductive member 30 may be made of copper with better conductivity, the grounding terminal 31 is connected to the grounded base through a grounding metal cord, and the grounding state of the terminal post 61 can be controlled by controlling the contact and separation state of the conductive member 30 and the terminal post 61. The arc-shaped surface 32 of the conductive piece 30 is well attached to the outer side wall of the end screen binding post 61, so that the contact area can be increased, and the conductive connection effect of the conductive piece 30 and the end screen binding post 61 is ensured.

Referring to fig. 1, two sets of clamping members 20 are respectively provided with a first gear 21, the first gears 21 are respectively provided with a rotating shaft 22, the flange body 10 is provided with a support 11, the first gears 21 are rotatably arranged on the support 11 through the rotating shafts 22, and the first gears 21 on the two sets of clamping members 20 are meshed with each other.

The two groups of clamping pieces 20 are meshed with each other through the first gear 21, and one group of clamping pieces 20 can be driven to synchronously rotate along with the other group of clamping pieces by controlling the rotation of the clamping pieces 20 around the rotating shaft 22, so that the transmission structure can be simplified, the manufacturing cost is saved, and the occupied space is reduced.

Referring to fig. 2, the clamping driving mechanism 40 includes a rack 41 and a spring 42, wherein the second gear 23 is disposed on the rotating shaft 22 of the clamping member 20, the rack 41 is slidably disposed on the support 11, the rack 41 is engaged with the second gear 23, the support 11 is provided with a limiting portion 12, and two ends of the spring 42 are respectively connected with the limiting portion 12 and one end of the rack 41.

The spring 42 provides an elastic force to the right in fig. 2 to the rack 41, so that the rack 41 provides a counterclockwise rotation trend to the second gear 23 and the first gear 21 connected with the second gear around the rotation shaft 22, and further provides a driving force for clamping the two groups of clamping members 20, so that the two groups of clamping members 20 can be always in a clamping closed state without intervention of external force, and the clamping electric connection state of the two groups of conducting members 30 and the end screen binding post 61 is ensured.

Referring to fig. 2, the limiting portion 12 is provided with a through hole 121, the rack 41 is provided with a guide post 411, the guide post 411 is slidably inserted into the through hole 121, one end of the guide post 411 is provided with a release preventing portion 412 capable of abutting against the limiting portion 12, and the spring 42 is sleeved on the guide post 411.

The guide column 411 is inserted into the through hole 121 to guide the movement track of the rack 41, and the retaining portion 412 is provided at one end of the guide column 411 to limit the rack 41 and prevent the rack 41 from being removed from the support 11.

Referring to fig. 3 and 4, the locking mechanism 50 includes a locking pin 51, the support 11 is provided with two sets of positioning bosses 13, the rack 41 is slidably disposed between the two sets of positioning bosses 13, the locking pin 51 is disposed on the positioning bosses 13, and referring to fig. 1, the rack 41 is provided with a locking hole 413, and the locking pin 51 corresponds to the locking hole 413.

When the rack 41 moves leftwards in fig. 2, the rack 41 compresses the spring 42, and simultaneously, the rack 41 drives the second gear 23 and the first gear 21 connected with the second gear 23 to rotate clockwise around the rotating shaft 22, so that the two groups of clamping pieces 20 are driven to open, the two groups of conductive pieces 30 are separated from the end screen binding post 61, the end screen binding post 61 is disconnected and grounded, and when the rack 41 moves leftwards to a position where the locking pin 51 is coaxially opposite to the locking hole 413, the locking pin 51 is controlled to be inserted into the locking hole 413, the rack 41 is locked, the two groups of clamping pieces 20 are kept in an open state, and a worker can conveniently electrically connect a measuring instrument with the end screen binding post 61 to conduct measurement work.

Referring to fig. 4, the locking mechanism 50 further includes a bracket 52 and a compression spring 53, the bracket 52 is fixedly arranged on the limit boss 13, the bracket 52 is provided with a guide hole 521, the limit boss 13 is provided with a pin hole 131, the locking pin 51 is inserted into the guide hole 521 and the pin hole 131, the locking pin 51 is provided with a step surface 511, the compression spring 53 is sleeved on the locking pin 51, two ends of the compression spring 53 respectively abut against the bracket 52 and the step surface 511, and one end of the locking pin 51 is provided with a handle 512.

When the rack 41 moves leftwards to a position where the locking pin 51 and the locking hole 413 are coaxially opposite, the locking pin 51 can be automatically inserted into the locking hole 413 to realize quick locking under the action of the elastic force of the pressure spring 53, and when the locking pin 51 needs to be unlocked, the locking pin 51 can be quickly unlocked only by pulling the locking pin 51 by the hand-held handle 512 against the elastic force of the pressure spring 53 to withdraw the locking pin 51 from the locking hole 413, so that the operation is very convenient and labor-saving, the labor intensity of workers is effectively reduced, the test efficiency of a transformer bushing is improved, after the locking pin 51 withdraws from the locking hole 413, the rack 41 is quickly returned under the action of the elastic force of the spring 42 to drive the two groups of clamping pieces 20 to be clamped and closed again, and the grounding state of the terminal post 61 of the end screen is restored, so that the operation convenience is further improved.

In addition to driving the locking pin 51 to perform telescopic movement by the compression spring 53, the locking mechanism 50 may also drive the locking pin 51 to perform telescopic movement by adopting a threaded connection manner, more specifically, the limiting boss 13 is provided with a screw hole, the outer peripheral wall of the locking pin 51 is provided with an external thread, the locking pin 51 is screwed with the screw hole through the external thread, when the locking pin 51 needs to be plugged into the locking hole 413, the rack 41 is moved to a position where the locking pin 51 and the locking hole 413 are coaxially opposite, then the locking pin 51 is screwed, and the locking pin 51 is driven to move along the axial direction under the interaction of the external thread and the screw hole, so that the locking pin 51 can be plugged into the locking hole 413 to achieve locking.

Referring to fig. 5 and 6, the implementation principle of the transformer bushing mounting flange of the present embodiment is as follows: the transformer bushing mounting flange is sleeved on the outer side of the transformer bushing 60, after the transformer bushing 60 is fixedly connected with the transformer bushing 60 in an adhering mode through epoxy pouring sealant, the two groups of conductive pieces 30 are tightly clamped on two sides of the end screen binding post 61 under the action of the elastic force of the spring 42, the two groups of conductive pieces are contacted with the outer side wall of the end screen binding post 61 through the arc surface 32, the grounding terminal 31 is connected with the grounded base through the grounding metal flexible wire, and the end screen binding post 61 is grounded in operation through the grounding terminal 31 and the grounding metal flexible wire. When a preventive test is required, the rack 41 is pushed to move leftwards in fig. 2, the rack 41 compresses the spring 42, meanwhile, the rack 41 drives the second gear 23 and the first gear 21 connected with the second gear to rotate clockwise around the rotating shaft 22, and further drives the two groups of clamping pieces 20 to open so as to separate the two groups of conductive pieces 30 from the end screen binding post 61, the end screen binding post 61 is disconnected and grounded, when the rack 41 moves leftwards to a position where the locking pin 51 and the locking hole 413 are coaxially opposite, the locking pin 51 is automatically inserted into the locking hole 413 under the action of the elastic force of the pressure spring 53 to realize quick locking, the two groups of clamping pieces 20 are kept in an open state, then a worker can electrically connect a measuring instrument with the end screen binding post 61 to carry out measurement work, after the measurement work is finished, the hand-held handle 512 overcomes the elastic force of the pressure spring 53 to pull the locking pin 51, the locking pin 51 is withdrawn from the locking hole 413 to realize quick unlocking, and the locking pin 51 is withdrawn from the locking hole 413, and the locking pin 41 is quickly returned under the elastic force of the spring 42 to drive the two groups of clamping pieces 20 to clamp and close again, and the end screen 61 is restored to the running ground state.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a transformer bushing mounting flange, its characterized in that includes flange body (10), two sets of clamping piece (20), two sets of electrically conductive piece (30), centre gripping actuating mechanism (40) and locking mechanical system (50), two sets of clamping piece (20) can open and shut locate flange body (10), centre gripping actuating mechanism (40) are located flange body (10) to with two sets of clamping piece (20) transmission is connected for drive two sets of clamping piece (20) press from both sides tightly closed, two sets of electrically conductive piece (30) respectively with two sets of clamping piece (20) rigid coupling, two sets of electrically conductive piece (30) are used for with last screen terminal (61) detachable centre gripping electricity of transformer bushing (60) is connected, locking mechanical system (50) are located flange body (10), locking mechanical system (50) are connected with two sets of clamping piece (20) for locking two sets of the open state of clamping piece (20).

2. A transformer bushing mounting flange according to claim 1, characterized in that the two sets of conductive members (30) are provided with ground terminals (31) respectively, the ground terminals (31) being adapted for grounding, the conductive members (30) being provided with arcuate surfaces (32) which are adapted to engage the outer side walls of the end shield posts (61) of the transformer bushing (60).

3. A transformer bushing mounting flange according to claim 1, characterized in that the two clamping members (20) are provided with first gears (21) respectively, the first gears (21) are provided with rotating shafts (22) respectively, the flange body (10) is provided with a support (11), the first gears (21) are rotatably arranged on the support (11) through the rotating shafts (22), and the first gears (21) on the two clamping members (20) are mutually meshed.

4. A transformer bushing mounting flange according to claim 3, characterized in that the clamping driving mechanism (40) comprises a rack (41) and a spring (42), wherein the rotating shaft (22) on one group of clamping pieces (20) is provided with a second gear (23), the rack (41) is slidably arranged on the support (11), the rack (41) is meshed with the second gear (23), the support (11) is provided with a limiting portion (12), and two ends of the spring (42) are respectively connected with the limiting portion (12) and one end portion of the rack (41).

5. The transformer bushing mounting flange according to claim 4, wherein the limiting portion (12) is provided with a through hole (121), the rack (41) is provided with a guide post (411), the guide post (411) is slidably arranged through the through hole (121), one end of the guide post (411) is provided with an anti-falling portion (412) capable of being abutted to the limiting portion (12), and the spring (42) is sleeved on the guide post (411).

6. A transformer bushing mounting flange according to claim 4, characterized in that the locking mechanism (50) comprises a locking pin (51), the support (11) is provided with two sets of limiting bosses (13), the rack (41) is slidably arranged between the two sets of limiting bosses (13), the locking pin (51) is arranged on the limiting bosses (13), the rack (41) is provided with a locking hole (413), and the locking pin (51) corresponds to the locking hole (413).

7. The transformer bushing mounting flange according to claim 6, wherein the locking mechanism (50) further comprises a bracket (52) and a pressure spring (53), the bracket (52) is fixedly arranged on the limiting boss (13), the bracket (52) is provided with a guide hole (521), the limiting boss (13) is provided with a pin hole (131), the locking pin (51) is inserted into the guide hole (521) and the pin hole (131), the locking pin (51) is provided with a step surface (511), the pressure spring (53) is sleeved on the locking pin (51), two ends of the pressure spring (53) are respectively abutted to the bracket (52) and the step surface (511), and one end of the locking pin (51) is provided with a handle (512).

8. A transformer bushing mounting flange according to claim 6, characterized in that the limit boss (13) is provided with a screw hole, the outer peripheral wall of the locking pin (51) is provided with an external screw thread, and the locking pin (51) is screwed with the screw hole through the external screw thread.