CN113593819A

CN113593819A - Transformer core ground lead structure

Info

Publication number: CN113593819A
Application number: CN202110850224.1A
Authority: CN
Inventors: 李力
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-11-02

Abstract

The invention discloses a transformer core grounding lead structure which comprises a placing table, wherein a transformer body is fixedly arranged at the upper end of the placing table through a first positioning bolt, an iron core grounding lead wire is arranged on the transformer body, one end of the iron core grounding lead wire is detachably provided with a connecting wire, and the lower end of one side of the transformer body is detachably provided with a protection mechanism; the invention is driven by the cylinder, and is matched with the use of the push plate and the U-shaped reset frame, so that the bending position of the grounding wire can be conveniently and rapidly corrected, and the breakage of the grounding wire due to excessive bending is avoided, thereby ensuring the normal use of the grounding lead structure.

Description

Transformer core ground lead structure

Technical Field

The invention relates to the technical field of transformer grounding, in particular to a transformer core grounding lead structure.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, and an iron core (magnetic core). The method mainly comprises the functions of voltage transformation, current transformation, impedance transformation, isolation and voltage stabilization. In the transformer, a winding and an iron core are main components for transmitting and converting electromagnetic energy, and the safety of the winding and the iron core is the key for ensuring the reliable operation of the transformer. In the running process of the transformer, an electric field formed between the electrified winding and the lead and an oil tank is an uneven electric field, the iron core and other metal components are positioned in the electric field, the iron core and other metal components have different potentials due to different positions, and when the potential difference between the two points reaches the value capable of breaking down the insulation between the two points, spark discharge is generated, so that accidents are caused.

In the existing transformer core grounding lead structure, the connection between the core grounding lead wire and the connecting wire and the connection between the connecting wire and the grounding wire are mostly fixed by only using a single bolt, thereby causing poor connection firmness between the iron core grounding lead-out wire and the connecting wire and between the connecting wire and the grounding wire, further, the safe use of the transformer cannot be guaranteed, and the existing transformer core grounding lead structure is not provided with a protection mechanism, so that the connecting wire is irradiated by sunlight for a long time, furthermore, the aging phenomenon is easy to occur, the service life is lower, in addition, when the grounding wire in the existing transformer iron core grounding lead structure is bent, the quick correction can not be carried out, so that the phenomenon that the grounding wire is broken due to over bending is easy to occur, further, the normal use of the grounding lead structure cannot be guaranteed, and therefore, a transformer core grounding lead structure is proposed to solve the above problems.

Disclosure of Invention

The present invention is directed to a transformer core grounding lead structure to solve the above problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a transformer core grounding lead structure comprises a placing table, a transformer body is fixedly arranged at the upper end of the placing table through a first positioning bolt, an iron core grounding lead-out wire is arranged on the transformer body, one end of the iron core grounding lead-out wire is detachably provided with a connecting wire, the lower end of one side of the transformer body is detachably provided with a protection mechanism, the protection mechanism comprises a first protection frame, the first protective frame is fixedly arranged on the transformer body through a second positioning bolt, the inner side of the first protective frame is slidably clamped with a second protective frame, the second protective frame and the first protective frame can be fixedly sleeved outside the connecting wire, one end of the connecting wire is detachably provided with a grounding wire, one end of the grounding wire is in contact with the ground, a reset mechanism is detachably arranged on the grounding wire, and a lifting mechanism is arranged at the lower end of the reset mechanism.

As a preferred technical scheme of the present invention, the reset mechanism includes a first fixing sleeve, screws are arranged on one side of the first fixing sleeve in a mirror image distribution, second fixing sleeves are detachably arranged on two groups of the screws, opposite sides of the second fixing sleeves and the first fixing sleeves can be tightly attached to a ground line, third through holes symmetrically arranged are formed in the second fixing sleeves in a penetrating manner, and the screws can penetrate the third through holes and are threadedly sleeved with nuts at ends thereof.

As a preferred technical scheme of the invention, an air cylinder is fixedly installed at one side of the first fixing sleeve, a push plate is arranged at the output end of the air cylinder, a U-shaped reset frame is detachably arranged at one end of the push plate, the U-shaped reset frame can be movably sleeved on a grounding wire, a sliding groove is formed in one side of the U-shaped reset frame, one end of the push plate can be slidably clamped in the sliding groove, a fastening bolt is inserted into the U-shaped reset frame through a thread, and one end of the fastening bolt can penetrate through the U-shaped reset frame and contact with the push plate.

As a preferred technical scheme of the invention, two sides of the lower end of the first protection frame are fixedly provided with a U-shaped frame distributed in a mirror image manner, the inner side of the U-shaped frame is slidably clamped with a pulling plate, one side of the pulling plate is provided with a pulling rod, one end of the pulling rod penetrates through the U-shaped frame and is provided with a pulling ring at the tail end thereof, the pulling rod is movably sleeved with a spring, two ends of the spring are respectively and fixedly connected with the U-shaped frame and the pulling plate, the other side of the pulling plate is fixedly provided with a limiting rod, two sides of the second protection frame are respectively provided with limiting holes distributed in an array manner, and one end of the limiting rod can penetrate through the first protection frame and is slidably clamped in the limiting holes.

As a preferred technical scheme of the present invention, one end of the core grounding lead-out wire is integrally formed with a connecting block, one side of the connecting block is provided with symmetrically distributed clamping grooves, one end of the connecting wire is integrally formed with a first U-shaped connector used in cooperation with the connecting block, and one end of the first U-shaped connector is slidably clamped in the clamping grooves.

As a preferred technical scheme of the invention, the upper end and the lower end of the connecting block are both provided with a first through hole in a penetrating manner, the clamping groove is internally provided with a fixing hole matched with the first through hole for use, the first U-shaped connecting head is provided with a first through hole in a penetrating manner, the first through hole and the fixing hole are distributed in a mirror image manner, and a first fixing bolt can be inserted into the first through hole, the first through hole and the fixing hole in a threaded manner.

As a preferred technical solution of the present invention, a second U-shaped connector is integrally formed at a lower end of the connection line, a U-shaped connection groove used in cooperation with the second U-shaped connector is formed at an upper end of the ground line, and the second U-shaped connector can be slidably clamped in the U-shaped connection groove.

As a preferable technical solution of the present invention, the second U-shaped connecting head is provided with second through holes which are symmetrically arranged, a portion of the upper end of the ground wire, which is located in the U-shaped connecting groove, is provided with second through holes which are used in cooperation with the second through holes, and the second through holes can be internally provided with second fixing bolts in a threaded manner.

As a preferred technical scheme of the invention, the lifting mechanism comprises a lifting sleeve, a rotary table is rotatably mounted at the upper end of the lifting sleeve, a screw rod is inserted into the rotary table through threads, the top end of the screw rod is fixedly connected with the bottom end of the air cylinder, the screw rod can be movably inserted into the lifting sleeve, a reinforcing frame body is arranged at the bottom end of the lifting sleeve, slide plates distributed in a mirror image manner are slidably clamped in inner cavities at two ends of the reinforcing frame body, one end of each slide plate penetrates through the reinforcing frame body, a vertical plate is arranged at the tail end of each slide plate, one side of each vertical plate can be in contact with the reinforcing frame body, two groups of positioning holes are formed in the upper end of each slide plate, third through holes distributed symmetrically are formed in two sides of the upper end of the reinforcing frame body, and third fixing bolts can be inserted into the third through holes and the positioning holes through threads.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention is driven by the cylinder and is matched with the push plate and the U-shaped reset frame, so that the bending position of the grounding wire can be conveniently and rapidly corrected, the grounding wire is prevented from being broken due to excessive bending, and the normal use of the grounding lead structure is ensured.

2. Under the coordination action of the pull rod, the pull plate, the spring, the limiting rod and the limiting hole, the invention provides convenience for adjusting and fixing the second protective frame, thereby providing convenience for protecting connecting wires with different lengths, avoiding the aging of the connecting wires due to long-time sunlight irradiation and further prolonging the service life of the connecting wires.

3. According to the invention, through the matching use of the connecting block, the first U-shaped connector, the first fixing bolt, the U-shaped connecting groove and the second U-shaped connector, the connecting firmness of the iron core grounding outgoing line and the connecting line as well as the connecting line and the grounding line is effectively improved, so that the safe use of the transformer body is guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structural connection of the present invention;

FIG. 3 is an enlarged structural view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged structural view of the structure at B in FIG. 2 according to the present invention;

FIG. 5 is a schematic structural view of a return mechanism of the present invention;

FIG. 6 is a schematic view of the lifting mechanism of the present invention

FIG. 7 is a schematic view of the guard mechanism of the present invention;

FIG. 8 is an enlarged structural view of the structure at C in FIG. 7 according to the present invention.

In the figure: 1. a placing table; 2. a transformer body; 3. an iron core ground lead-out wire; 31. connecting blocks; 32. a card slot; 33. a first through hole; 34. a fixing hole; 35. a first fixing bolt; 4. a connecting wire; 41. a first U-shaped connector; 42. a first perforation; 43. a second U-shaped connector; 44. a second perforation; 45. a second fixing bolt; 5. a protection mechanism; 51. a first protection frame; 52. a second protective frame; 53. a U-shaped frame; 54. pulling a plate; 55. a pull rod; 56. a pull ring; 57. a spring; 58. a limiting rod; 59. a limiting hole; 6. a ground line; 61. a U-shaped connecting groove; 62. a second through hole; 7. a reset mechanism; 71. a first fixing sleeve; 72. a screw; 73. a second fixing sleeve; 74. a third through hole; 75. a nut; 76. a cylinder; 77. pushing the plate; 78. a U-shaped reset frame; 79. a chute; 710. fastening a bolt; 8. a lifting mechanism; 81. a lifting sleeve; 82. a turntable; 83. a screw rod; 84. a reinforcement frame body; 85. a slide plate; 86. a vertical plate; 87. positioning holes; 88. a third perforation; 89. and a third fixing bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: a transformer core grounding lead structure comprises a placing table 1, a transformer body 2 is fixedly arranged at the upper end of the placing table 1 through a first positioning bolt, an iron core grounding lead wire 3 is arranged on the transformer body 2, a connecting wire 4 is detachably arranged at one end of the iron core grounding lead wire 3, a protection mechanism 5 is detachably arranged at the lower end of one side of the transformer body 2, the protection mechanism 5 comprises a first protection frame 51, the first protection frame 51 is fixedly arranged on the transformer body 2 through a second positioning bolt, a second protection frame 52 is arranged on the inner side of the first protection frame 51 in a sliding and clamping manner, and second protection frame 52 and first protection frame 51 can fix the cover and establish the outside at connecting wire 4, and the one end of connecting wire 4 can be dismantled and be equipped with earth connection 6, and the one end of earth connection 6 contacts with ground, can dismantle on the earth connection 6 and be equipped with canceling release mechanical system 7, and the lower extreme of canceling release mechanical system 7 is equipped with elevating system 8.

The reset mechanism 7 comprises a first fixing sleeve 71, wherein screw rods 72 distributed in a mirror image manner are arranged on one side of the first fixing sleeve 71, second fixing sleeves 73 are detachably arranged on the two groups of screw rods 72, the opposite sides of the second fixing sleeves 73 and the first fixing sleeves 71 can be tightly attached to the ground wire 6, third through holes 74 symmetrically arranged are arranged on the second fixing sleeves 73 in a penetrating manner, the screw rods 72 can penetrate through the third through holes 74, nuts 75 are sleeved on the tail ends of the screw rods 72 in a threaded manner, an air cylinder 76 is fixedly arranged on one side of the first fixing sleeve 71, a push plate 77 is arranged at the output end of the air cylinder 76, a U-shaped reset frame 78 is detachably arranged at one end of the push plate 77, the U-shaped reset frame 78 can be movably sleeved on the ground wire 6, a sliding groove 79 is arranged on one side of the U-shaped reset frame 78, one end of the push plate 77 can be slidably clamped in the sliding groove 79, a fastening bolt 710 is inserted in the thread of the U-shaped reset frame 78, one end of the fastening bolt 710 can penetrate through the U-shaped reset frame 78 and is contacted with the push plate 77, when the ground wire 6 is bent, a user can attach the inner side of the first fixing sleeve 71 to a proper position on the ground wire 6, then the user can insert the second fixing sleeve 73 on the screw 72 and turn the nut 75 until the first fixing sleeve 71 and the second fixing sleeve 73 are fixed on the ground wire 6, at this time, the user can adjust the position of the U-shaped reset frame 78 to a proper position and sleeve the U-shaped reset frame on the ground wire 6, when the U-shaped reset frame 78 is completely sleeved on the ground wire 6, the push plate 77 is just clamped in the sliding groove 79, then the user can turn the fastening bolt 710 until one end of the fastening bolt 710 is closely attached to the push plate 77, at this time, the user can open the air cylinder 76, so that the air cylinder 76 pushes the U-shaped reset frame 78 to slide towards the bent part close to the ground wire 6 through the push plate 77, when the U-shaped reset frame 78 contacts the bent part, under the thrust action of the air cylinder 76, the U-shaped reset frame 78 can correct the bent part of the ground wire 6, after the bend has been corrected, the user may deactivate the cylinder 76 and remove the reset mechanism 7.

The two sides of the lower end of the first protective frame 51 are fixedly provided with U-shaped frames 53 distributed in a mirror image manner, the inner sides of the U-shaped frames 53 are slidably clamped with pull plates 54, one side of each pull plate 54 is provided with a pull rod 55, one end of each pull rod 55 penetrates through the U-shaped frame 53 and is provided with a pull ring 56 at the tail end thereof, the pull rods 55 are movably sleeved with springs 57, two ends of each spring 57 are respectively and fixedly connected with the U-shaped frames 53 and the pull plates 54, the other side of each pull plate 54 is fixedly provided with a limit rod 58, two sides of the second protective frame 52 are respectively provided with limit holes 59 distributed in an array manner, one end of each limit rod 58 can penetrate through the first protective frame 51 and is slidably clamped in the limit holes 59, a user can adjust the protective mechanism 5 according to the length of the connecting wire 4, the user can pull the two groups of pull rings 56 towards two sides simultaneously, so that the pull rods 55 drive the two groups of pull plates 54 to move back to drive the two groups of limit rods 58 to move back, until the limiting rods 58 are completely separated from the limiting holes 59, the two groups of springs 57 are simultaneously in a compressed state, then another user can adjust the length of the second protective frame 52 up and down according to the length of the connecting wire 4 until the first protective frame 51 and the second protective frame 52 are completely sleeved on the outer side of the connecting wire 4 and are in proper positions, then the user can loosen the pull ring 56, and the springs 57 stretch at the moment, so that the two groups of limiting rods 58 are pushed to move in opposite directions until the two groups of limiting rods 58 are inserted into the other group of limiting holes 59.

One end of the iron core grounding lead-out wire 3 is integrally formed with a connecting block 31, one side of the connecting block 31 is provided with symmetrically distributed clamping grooves 32, one end of the connecting wire 4 is integrally formed with a first U-shaped connector 41 matched with the connecting block 31 for use, one end of the first U-shaped connector 41 can be slidably clamped in the clamping grooves 32, the upper end and the lower end of the connecting block 31 are respectively provided with a first through hole 33 in a penetrating manner, a fixing hole 34 matched with the first through hole 33 for use is formed in the clamping groove 32, a first through hole 42 distributed in a mirror image manner is formed in the first U-shaped connector 41 in a penetrating manner, the first through hole 33, the first through hole 42 and the fixing hole 34 can be inserted with a first fixing bolt 35 in a threaded manner, a user can insert one end of the first U-shaped connector 41 into the corresponding clamping groove 32, and then the user can sequentially turn two groups of first fixing bolts 35 until the two groups of first fixing bolts 35 are inserted into the corresponding first through holes 33, The first through hole 42 and the fixing hole 34.

The lower extreme integrated into one piece of connecting wire 4 has second U type connector 43, the U type spread groove 61 that uses with the cooperation of second U type connector 43 is seted up to the upper end of earth connection 6, second U type connector 43 can the slip card establish in U type spread groove 61, run through on the second U type connector 43 and set up the second perforation 44 that the symmetry set up, the part that earth connection 6 upper end is located U type spread groove 61 runs through and sets up the second through-hole 62 that uses with the cooperation of the second perforation 44, can the screw thread insert in the second perforation 44 and the second through-hole 62 and be equipped with second fixing bolt 45, the user can insert second U type connector 43 and establish in the U type spread groove 61 that pre-buried earth connection 6 upper end was seted up, but later user knob second fixing bolt 45, until inserting it and establishing in second perforation 44 and second through-hole 62.

The lifting mechanism 8 comprises a lifting sleeve 81, a rotary table 82 is rotatably installed at the upper end of the lifting sleeve 81, a screw 83 is inserted into the rotary table 82 through threads, the top end of the screw 83 is fixedly connected with the bottom end of the air cylinder 76, the screw 83 can be movably inserted into the lifting sleeve 81, a reinforcing frame body 84 is arranged at the bottom end of the lifting sleeve 81, sliding cards in inner cavities at two ends of the reinforcing frame body 84 are provided with sliding plates 85 distributed in a mirror image mode, one end of each sliding plate 85 penetrates through the reinforcing frame body 84 and is provided with a vertical plate 86 at the tail end of the corresponding sliding plate, one side of each vertical plate 86 can be in contact with the reinforcing frame body 84, two groups of positioning holes 87 are formed in the upper end of each sliding plate 85, third through holes 88 symmetrically distributed are formed in two sides of the upper end of each reinforcing frame body 84, third fixing bolts 89 can be inserted into the third through holes 88 and the positioning holes 87 through threads, and accordingly the sliding plates 85, the vertical plates 86 and the reinforcing frame bodies 84 are fixed.

The working principle is as follows: before the transformer body 2 is used, a user needs to insert one end of the first U-shaped connector 41 into the corresponding clamping groove 32, then the user can sequentially turn the two groups of first fixing bolts 35 until the two groups of first fixing bolts 35 are inserted into the corresponding first through hole 33, the first through hole 42 and the fixing hole 34, then the user can insert the second U-shaped connector 43 into the U-shaped connecting groove 61 formed in the upper end of the embedded grounding wire 6, then the user can turn the second fixing bolt 45 until the second fixing bolts are inserted into the second through hole 44 and the second through hole 62, and through the matching use of the connecting block 31, the first U-shaped connector 41, the first fixing bolts 35, the U-shaped connecting groove 61, the second U-shaped connector 43 and the second fixing bolt 45, the connection firmness of the iron core grounding lead-out wire 3 and the connecting wire 4 and the grounding wire 6 is effectively improved, so that the safe use of the transformer body 2 is guaranteed, after the connection between the iron core grounding lead-out wire 3 and the connection wire 4 and the grounding wire 6 is completed, a user can fix the first protective frame 51 on the transformer body 2 through the second positioning bolt, then the user can adjust the protective mechanism 5 according to the length of the connection wire 4, at this time, the user can pull the two groups of pull rings 56 towards two sides simultaneously, so as to drive the corresponding two groups of pull plates 54 to move backwards through the pull rod 55, and further drive the two groups of limiting rods 58 to move backwards until the limiting rods 58 are completely separated from the limiting holes 59, at this time, the two groups of springs 57 are in a compressed state simultaneously, then another user can adjust the length of the second protective frame 52 up and down according to the length of the connection wire 4 until the first protective frame 51 and the second protective frame 52 are completely sleeved outside the connection wire 4 and are in proper positions, then the user can release the pull rings 56, at this time, the springs 57 will extend, thereby, the two sets of limiting rods 58 are pushed to move in opposite directions until the two sets of limiting rods 58 are inserted into the other set of limiting holes 59, at the moment, the second protective frame 52 can be loosened and the transformer body 2 is used for power supply operation, under the coordination action of the pull rod 55, the pull plate 54, the spring 57, the limiting rods 58 and the limiting holes 59, convenience is provided for adjustment and fixation of the second protective frame 52, convenience is provided for protection of connecting wires 4 with different lengths, aging of the connecting wires 4 due to long-time sunlight irradiation is avoided, and further the service life of the connecting wires 4 is prolonged; during subsequent use, when the ground wire 6 is bent, a user needs to adjust the height of the lifting mechanism 8 according to the height of the bent part of the ground wire 6, at this time, the user needs to turn and remove two sets of third fixing bolts 89, then the user can pull two sets of vertical plates 86 towards two sides simultaneously, so that the two sets of vertical plates 86 drive the corresponding sliding plates 85 to move backwards until the distance between the two sets of vertical plates 86 is adjusted to be maximum, then the user can turn and turn the two sets of third fixing bolts 89 reversely so as to be inserted into the corresponding third through holes 88 and the other positioning hole 87, at this time, the user needs to hold the air cylinder 76 and rotate the turntable 82, so that the user drives the lifting sleeve 81 to move towards one end far away from the air cylinder 76, the turntable 82 stops rotating when the lifting mechanism 8 is adjusted to be at a proper height, then the user can move the resetting mechanism 7 to a proper position, and make the vertical plates 86 contact with the ground, meanwhile, a user can attach the inner side of the first fixing sleeve 71 to a proper position on the ground wire 6, then the user can insert the second fixing sleeve 73 on the screw 72 and turn the nut 75 until the first fixing sleeve 71 and the second fixing sleeve 73 are fixed on the ground wire 6, at this time, the user can adjust the position of the U-shaped reset frame 78 to a proper position and sleeve the U-shaped reset frame on the ground wire 6, when the U-shaped reset frame 78 is completely sleeved on the ground wire 6, the push plate 77 is just clamped in the sliding groove 79, then the user can turn the fastening bolt 710 until one end of the fastening bolt 710 is tightly attached to the push plate 77, at this time, the user can open the air cylinder 76, so that the air cylinder 77 can push the U-shaped reset frame 78 to slide close to the bending position of the ground wire 6, when the U-shaped reset frame 78 contacts the bending position, under the thrust action of the air cylinder 76, the U-shaped reset frame 78 can correct the bending position of the ground wire 6, after the department of buckling is rectified, the user can close cylinder 76 and take off canceling release mechanical system 7, then the user need the antiport carousel 82, until moving lifting sleeve 81 to initial position, later the user can move riser 86 to initial position and fixed again, under the drive of cylinder 76, the use of push pedal 77 and U type reset frame 78 is cooperated again, can carry out convenient quick correction with earth connection 6 department of buckling, avoid earth connection 6 because of buckling excessively and appear the fracture, thereby the normal use of ground lead structure has been ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a transformer core ground connection pin configuration, is including placing platform (1), its characterized in that: the upper end of the placing table (1) is fixedly provided with a transformer body (2) through a first positioning bolt, an iron core grounding lead-out wire (3) is arranged on the transformer body (2), one end of the iron core grounding lead-out wire (3) is detachably provided with a connecting wire (4), one side lower end of the transformer body (2) is detachably provided with a protection mechanism (5), the protection mechanism (5) comprises a first protection frame (51), the first protection frame (51) is fixedly arranged on the transformer body (2) through a second positioning bolt, an inner side sliding card of the first protection frame (51) is provided with a second protection frame (52), the second protection frame (52) and the first protection frame (51) can be fixedly sleeved on the outer side of the connecting wire (4), one end of the connecting wire (4) is detachably provided with a grounding wire (6), one end of the grounding wire (6) is contacted with the ground, can dismantle on earth connection (6) and be equipped with canceling release mechanical system (7), the lower extreme of canceling release mechanical system (7) is equipped with elevating system (8).

2. A transformer core ground lead structure according to claim 1, wherein: reset mechanism (7) are including first fixed cover (71), one side of first fixed cover (71) is equipped with screw rod (72) that the mirror image distributes, and is two sets of can dismantle on screw rod (72) and be equipped with the fixed cover of second (73), the fixed cover of second (73) can closely laminate on earth connection (6) with the opposite side of first fixed cover (71), run through on the fixed cover of second (73) and set up third through-hole (74) that the symmetry set up, screw rod (72) can run through third through-hole (74) and have cup jointed nut (75) at its terminal screw thread.

3. A transformer core ground lead structure according to claim 2, wherein: one side fixed mounting of first fixed cover (71) has cylinder (76), the output of cylinder (76) is equipped with push pedal (77), the one end of push pedal (77) can be dismantled and is equipped with U type reset frame (78), U type reset frame (78) can the movable sleeve establish on earth connection (6), spout (79) have been seted up to one side of U type reset frame (78), the one end of push pedal (77) can the sliding card establish in spout (79), U type reset frame (78) is gone up the screw thread and is inserted and is equipped with fastening bolt (710), the one end of fastening bolt (710) can run through U type reset frame (78) and contact with push pedal (77).

4. A transformer core ground lead structure according to claim 1, wherein: the utility model discloses a safety protection device for a vehicle, including first protection frame (51), U type frame (53) that the lower extreme both sides fixed mounting of first protection frame (51) has the mirror image to distribute, the inboard sliding clip of U type frame (53) is equipped with arm-tie (54), one side of arm-tie (54) is equipped with pull rod (55), the one end of pull rod (55) is run through U type frame (53) and is equipped with pull ring (56) at its end, the activity cover is equipped with spring (57) on pull rod (55), the both ends of spring (57) respectively with U type frame (53) and arm-tie (54) fixed connection, the opposite side fixed mounting of arm-tie (54) has gag lever post (58), array distribution's spacing hole (59) are all seted up to the both sides of second protection frame (52), the one end of gag lever post (58) can run through first protection frame (51) and the sliding clip is established in spacing hole (59).

5. A transformer core ground lead structure according to claim 1, wherein: the iron core grounding lead-out wire (3) is integrally formed into a connecting block (31), symmetrically distributed clamping grooves (32) are formed in one side of the connecting block (31), a first U-shaped connector (41) matched with the connecting block (31) for use is formed in one end of the connecting wire (4), and one end of the first U-shaped connector (41) can be slidably clamped in the clamping grooves (32).

6. A transformer core ground lead configuration according to claim 5, further comprising: the upper end and the lower extreme of connecting block (31) all run through and have seted up first through-hole (33), fixed orifices (34) that use with first through-hole (33) cooperation have been seted up in draw-in groove (32), run through first perforation (42) of seting up mirror image distribution on first U type connector (41), can the screw thread insert in first through-hole (33), first perforation (42) and fixed orifices (34) and be equipped with first fixing bolt (35).

7. A transformer core ground lead structure according to claim 1, wherein: the lower extreme integrated into one piece of connecting wire (4) has second U type connector (43), U type spread groove (61) of using with second U type connector (43) cooperation are seted up to the upper end of earth connection (6), second U type connector (43) can slide the card and establish in U type spread groove (61).

8. A transformer core ground lead configuration according to claim 7, further comprising: run through the second perforation (44) of seting up the symmetry setting on second U type connector (43), the part that earth connection (6) upper end is located U type spread groove (61) runs through and sets up second through-hole (62) of using with the second perforation (44) cooperation, second perforation (44) and second through-hole (62) can the screw thread insert in be equipped with second fixing bolt (45).

9. A transformer core ground lead configuration according to claim 3, further comprising: the lifting mechanism (8) comprises a lifting sleeve (81), a rotary table (82) is rotatably mounted at the upper end of the lifting sleeve (81), a lead screw (83) is inserted into the rotary table (82) through threads, the top end of the lead screw (83) is fixedly connected with the bottom end of a cylinder (76), the lead screw (83) can be movably inserted into the lifting sleeve (81), a reinforcing frame body (84) is arranged at the bottom end of the lifting sleeve (81), sliding blocks are arranged in inner cavities at two ends of the reinforcing frame body (84) and are provided with sliding plates (85) distributed in a mirror image mode, one end of each sliding plate (85) penetrates through the reinforcing frame body (84) and is provided with a vertical plate (86) at the tail end of the corresponding sliding plate, one side of each vertical plate (86) can be in contact with the reinforcing frame body (84), two groups of positioning holes (87) are formed in the upper end of each sliding plate (85), and third through holes (88) which are symmetrically distributed are formed in two sides of the upper end of the reinforcing frame body (84), and a third fixing bolt (89) can be inserted into the third through hole (88) and the positioning hole (87) in a threaded manner.