A conductive copper busbar device for a transformer
By designing the docking mechanism and limiting mechanism on the conductive copper bar of the intermediate frequency machine transformer, the problem of poor stability of the conductive copper bar structure is solved, and the stable connection between the wire and the transformer body is achieved, avoiding pull-off and cell damage.
Patent Information
- Application Number
- CN202410637594.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-21
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2043-11-21
AI Technical Summary
The conductive copper strip structure of existing medium-frequency machine transformers has poor stability, resulting in unstable connection between the wire and the conductive copper strip, which is prone to break due to friction.
A conductive copper strip device including a docking mechanism and a limiting mechanism is designed. Through structures such as sliding grooves, sliding blocks, contact rings and spring gaskets, the wires are ensured to be stablely connected on the transformer body, and avoid excessive folding angles of the wires and pulling forces. Too big.
Improves the connection stability between the wire and the transformer body, reduces friction, ensures that the wire can maintain good contact under any swing, and avoids pull-off and cell damage.
Smart Images
Figure CN118398352B_ABST
Abstract
Description
[0001] This application is a divisional application with application number 2023115530264, application date November 21, 2023, and invention name “A conductive copper busbar device for a medium frequency machine transformer”. Technical Field
[0002] The invention belongs to the technical field of medium frequency machine transformers, and specifically discloses a conductive copper busbar device of a transformer. Background Art
[0003] In medium frequency heat treatment equipment, the conductive copper busbar is the core component connecting the transformer and the inductor. The stability and reliability of the conductive copper busbar directly affects the product quality and the stability of the equipment.
[0004] In the conventional conductive copper busbar device of the medium frequency machine transformer, in the medium frequency machine, the conductive copper busbar between the transformer and the inductor is generally manually wired by workers, and the wires are wound around the conductive copper busbar, so that the two ends are respectively connected to the transformer and the inductor through connecting plates. The structural stability of this conductive copper busbar is poor, and a large amount of friction is generated between the wires and the conductive copper busbar during the swinging process of the wires, and at the same time, some wires cannot be well contacted with the conductive copper busbar, resulting in unstable connection between the wires and the conductive copper busbar. Summary of the invention
[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a conductive copper busbar device for a transformer.
[0006] To achieve the above purpose, the present invention provides a conductive copper busbar device of a transformer, comprising a transformer main body, a docking mechanism is arranged at the upper end of the transformer main body, a limiting mechanism is arranged at the upper end of the transformer main body near the rear side of the docking mechanism, the docking mechanism comprises a docking wire installed at the upper end of the transformer main body, a supporting frame is fixedly connected to the rear side of the docking wire at the upper end of the transformer main body near the rear side of the docking wire, a connecting wire is fixedly connected to the inner side of the supporting frame, a limiting ring is movably connected to the outer side of the connecting wire near the rear side of the supporting frame, a contact ring is installed at the outer side of the connecting wire near the rear side of the limiting ring, a sliding groove is arranged at the front end of the limiting ring, a sliding block is slidably connected to the inner side of the sliding groove, a connecting card groove is slidably connected to the outer side of the limiting ring, a contact frame is slidably connected to the outer side of the contact ring, a mounting head is fixedly connected to the rear end of the contact frame, a movable groove is arranged at one end of the connecting wire, a movable groove is slidably connected to the inner side of the movable groove The locking mechanism is a hole in the locking cam, and the locking cam is connected with the locking cam at the locking cam's upper end to the left of the locking cam, and the locking cam is connected with the spring to lock the locking cam.
[0007] In the above technical solution, preferably, a control groove is opened at the rear end of the limiting frame, the inner side of the control groove is fixedly connected to the limiting frame, the inner side of the limiting frame is threadedly connected to a screw head, the rear end of the screw head is fixedly connected to a rotating knob, the lower end of the limiting frame is fixedly connected to an indicator needle, and the angle disk is in the shape of an arc.
[0008] In the above technical solution, preferably, the shape of the buffer ring is an arc, the number of the spring washers is multiple groups, the shape of the inner ring is an arc, and the axis points between the buffer ring and the inner ring are located at the same point.
[0009] In the above technical solution, preferably, there are two groups of the buffer ring and the inner ring, the shape of the connecting port is a truncated cone, and the front end of the screw rod head is in contact with the surface of the sliding rail.
[0010] In the above technical solution, preferably, the indicator needle corresponds to the angle disk, and there are two groups of the limiting mechanisms.
[0011] In the above technical solution, preferably, the lower end of the transformer body is fixedly connected to a base, the front end of the base is fixedly connected to a mounting frame, a porcelain insulator is installed on the side of the upper end of the transformer body close to the docking line, and a reflective block is fixedly connected to the upper end of the transformer body close to the front side of the porcelain insulator, the number of the mounting frames is four groups, and the number of the porcelain insulators is three groups.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. By inserting the wire into the inner side of the connection port and then inserting the wire into the inner side of the docking frame, screwing the external thread ring into the inside of the mounting seat, and then pushing the docking frame, and making the limiting frame slide on the outer side of the sliding rail, it is convenient to adjust the position of the wire.
[0014] 2. Twist the screw head at the same time and make it contact the sliding rail, so that the position of the wire can be limited, so that the wire can be adjusted to a suitable position. At the same time, the limiting frame drives the indicator needle to slide, so that the indicator needle points to the new position of the angle disk, so the folding angle of the wire can be clearly observed, so as to avoid excessive folding of the wire, which may cause damage to the battery core of the wire.
[0015] 3. The installation head is driven by the electric wire, and the installation head drives the contact frame to rotate closely against the contact ring, so that the connection slot rotates around the limiting ring, and the contact frame is always in contact with the contact ring during rotation, so as to achieve the purpose of always forming a connection between the contact frame and the contact ring, thereby ensuring the connection stability between the electric wire and the transformer body.
[0016] 4. At the same time, the connecting slot drives the limiting ring to swing, so that the limiting ring drives the moving block to slide in the inner side of the moving slot, so that there is elasticity between the wire and the connecting wire, thereby avoiding the situation where the wire is broken due to excessive pulling force.
[0017] 5. Through the elastic action of multiple groups of spring washers, the two groups of inner rings pull the wires, thereby greatly reducing the range of movement of the wires. At the same time, the frame is restricted from sliding on the outside of the sliding rail, thereby effectively controlling the folding angle of the wires, and the wires pass through the mounting head to drive the contact frame to rotate close to the contact ring, thereby greatly improving the connection stability between the wires and the transformer body, and reducing the friction between the contact frame and the contact ring, so that the wires are connected to the transformer body under any swinging conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1This is a schematic diagram of the overall structure of a conductive copper busbar device of a transformer proposed by the present invention;
[0019] Figure 2 A schematic diagram of the structure of a docking mechanism of a conductive copper busbar device of a transformer proposed by the present invention;
[0020] Figure 3 A schematic diagram of the local structure of the docking mechanism of the conductive copper bar device of a transformer proposed by the present invention Figure 1 ;
[0021] Figure 4 A schematic diagram of the local structure of the docking mechanism of the conductive copper bar device of a transformer proposed by the present invention Figure 2 ;
[0022] Figure 5 A schematic diagram of the structure of a limiting mechanism of a conductive copper bar device of a transformer proposed by the present invention;
[0023] Figure 6 A schematic diagram of the local structure of a limiting mechanism of a conductive copper bar device of a transformer proposed by the present invention Figure 1 ;
[0024] Figure 7 A schematic diagram of the local structure of a limiting mechanism of a conductive copper bar device of a transformer proposed by the present invention Figure 2 ;
[0025] Figure 8 A schematic diagram of the local structure of a limiting mechanism of a conductive copper bar device of a transformer proposed by the present invention Figure 3 .
[0026] In the figure: 1. transformer body; 2. base; 3. mounting frame; 4. porcelain insulator; 5. reflective block; 6. docking mechanism; 61. docking wire; 62. support frame; 63. connecting wire; 64. contact ring; 65. limiting ring; 66. sliding groove; 67. sliding block; 68. connecting card slot; 69. contact frame; 610. mounting head; 611. moving groove; 612. moving block; 7. limiting mechanism; 71. angle plate; 72. sliding rail; 73. limiting frame; 74. docking frame; 75. mounting seat; 76. external thread ring; 77. buffer ring; 78. spring gasket; 79. internal ring; 710. connecting port; 711. control groove; 712. limiting frame; 713. screw rod head; 714. rotary knob; 715. indicator needle. DETAILED DESCRIPTION
[0027] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0029] like Figure 1-Figure 8 A conductive copper busbar device of a transformer shown in the figure comprises a transformer body 1, a docking mechanism 6 is arranged at the upper end of the transformer body 1, a limiting mechanism 7 is arranged at the rear side of the upper end of the transformer body 1 near the docking mechanism 6, the docking mechanism 6 comprises a docking wire 61 installed at the upper end of the transformer body 1, a support frame 62 is fixedly connected to the rear side of the docking wire 61 at the upper end of the transformer body 1, a connecting wire 63 is fixedly connected to the inner side of the support frame 62, a limiting ring 65 is movably connected to the outer side of the connecting wire 63 near the rear side of the support frame 62, a contact ring 64 is installed at the outer side of the connecting wire 63 near the rear side of the limiting ring 65, a sliding groove 66 is opened at the front end of the limiting ring 65, a sliding block 67 is slidably connected to the inner side of the sliding groove 66, and a connecting card slot 66 is slidably connected to the outer side of the limiting ring 65 8. The outer side of the contact ring 64 is slidably connected to a contact frame 69, and the rear end of the contact frame 69 is fixedly connected to a mounting head 610. The limiting mechanism 7 includes an angle plate 71 fixedly connected to the upper end of the transformer body 1 near the rear side of the support frame 62, the upper end of the angle plate 71 is fixedly connected to a sliding rail 72, the outer side of the sliding rail 72 is slidably connected to a limiting frame 73, the upper end of the limiting frame 73 is fixedly connected to a docking frame 74, the rear end of the docking frame 74 is fixedly connected to a mounting seat 75, the internal thread of the mounting seat 75 is connected to an external threaded ring 76, the rear end of the external threaded ring 76 is fixedly connected to a buffer ring 77, the inner inner wall of the buffer ring 77 is fixedly connected to a spring gasket 78, the lower end of the spring gasket 78 is fixedly connected to an inner connecting ring 79, and the front end of the buffer ring 77 is fixedly connected to a connecting port 710.
[0030] A movable groove 611 is provided at one end of the connecting wire 63, and a movable block 612 is slidably connected to the inner side of the movable groove 611. The rear end of the connecting wire 63 is installed at the front end of the docking wire 61, the front end of the sliding block 67 is fixedly connected to the inner wall of the connecting slot 68, the front end of the contact frame 69 is fixedly connected to the rear end of the connecting slot 68, the contact ring 64 and the contact frame 69 are electrically connected, one end of the movable block 612 is fixedly connected to the inner wall of the limiting ring 65, and there are two groups of docking mechanisms 6.
[0031] When in use, the worker first peels one end of the wire, and inserts one end of the wire into the inner side of the mounting head 610, and welds the wire to the inner side of the mounting head 610, so that the wire is connected to the mounting head 610, and the wire drives the mounting head 610, and the mounting head 610 drives the contact frame 69 to rotate, so that the contact frame 69 slides close to the contact ring 64, and the contact frame 69 drives the connecting slot 68 to slide on the outer side of the limiting ring 65, and the connecting slot 68 drives the sliding block 67 to slide on the inner side of the sliding slot 66, thereby improving the rotation stability of the connecting slot 68, and the connecting slot 68 drives the limiting ring 65 to swing, so that the limiting ring 65 drives the moving block 612 to slide on the inner side of the moving slot 611, and at the same time, the contact frame 69 is always in contact with the contact ring 64. The contact frame 69 and the contact ring 64 are in electrical contact, thereby ensuring the stability of the wire connection. The installation head 610 is driven by the wire, and the installation head 610 drives the contact frame 69 to rotate close to the contact ring 64, so that the connecting slot 68 rotates around the limiting ring 65, and the contact frame 69 is always in contact with the contact ring 64 during rotation, so that the contact frame 69 is always connected to the contact ring 64, thereby ensuring the stability of the connection between the wire and the transformer body 1. At the same time, the connecting slot 68 drives the limiting ring 65 to swing, so that the limiting ring 65 drives the moving block 612 to slide in the inner side of the moving slot 611, so that there is elasticity between the wire and the connecting line 63, thereby avoiding the situation where the wire is pulled too hard and breaks.
[0032] A control groove 711 is provided at the rear end of the limiting frame 73, and the inner side of the control groove 711 is fixedly connected to the limiting frame 712, the inner side of the limiting frame 712 is threadedly connected to a screw head 713, the rear end of the screw head 713 is fixedly connected to a rotating knob 714, and the lower end of the limiting frame 73 is fixedly connected to an indicating needle 715, the angle disk 71 is in the shape of an arc, the buffer ring 77 is in the shape of an arc, there are multiple groups of spring washers 78, the inner ring 79 is in the shape of an arc, the axial point between the buffer ring 77 and the inner ring 79 is at the same point, there are two groups of buffer rings 77 and inner rings 79, the connection port 710 is in the shape of a truncated cone, the front end of the screw head 713 contacts the surface of the sliding rail 72, the indicating needle 715 corresponds to the angle disk 71, and there are two groups of limiting mechanisms 7.
[0033] At the same time, the wire is passed through the inner side of the connecting port 710, so that the inner connecting ring 79 contacts the wire, and the wire is passed through the docking frame 74, and then the outer threaded ring 76 is screwed into the inside of the mounting seat 75, so that the two groups of inner connecting rings 79 are attached to the outside of the wire, and the multiple groups of spring washers 78 are elastically acted on, so that the two groups of inner connecting rings 79 clamp the outside of the wire, then push the docking frame 74 again, and make the limiting frame 73 slide on the outside of the sliding rail 72, and make the limiting frame 73 drive the indicating needle 715 to slide, so that the indicating needle 715 points to the new position of the angle disk 71, so that the folding angle of the wire can be clearly observed, so as to avoid the wire folding too much, thereby causing damage to the battery core of the wire, when the wire is adjusted to the appropriate position, and then turn the rotary knob 714 again, so that the rotary knob 714 drives the screw rod head 713 to rotate, so that the screw rod head 713 moves on the inner side of the limiting frame 712, and makes the screw rod head 713 contact the sliding rail Rail 72, thereby limiting the movement of limiting frame 73, thereby limiting the position of the wire, and at the same time, when the wire swings, the multiple sets of spring washers 78 pull the wires against each other under the elastic action, thereby reducing the swing amplitude of the wire, by inserting the wire into the inner side of the connecting port 710, and then inserting the wire into the inner side of the docking frame 74, and screwing the external threaded ring 76 into the interior of the mounting seat 75, and then pushing the docking frame 74, and making the limiting frame 73 slide on the outer side of the sliding rail 72, so it is easy to adjust the position of the wire, and at the same time, screw the screw head 713, and make the screw head 713 contact the sliding rail 72, so it is easy to limit the position of the wire, so as to facilitate the adjustment of the wire to a suitable position, and at the same time, the limiting frame 73 drives the indicator needle 715 to slide, so that the indicator needle 715 points to the new position of the angle disk 71, so the folding angle of the wire can be clearly observed, so as to avoid the wire folding degree being too large, thereby causing damage to the battery core of the wire.
[0034] The lower end of the transformer body 1 is fixedly connected to a base 2, the front end of the base 2 is fixedly connected to a mounting frame 3, the upper end of the transformer body 1 is installed with a porcelain insulator 4 on one side close to the docking line 61, the upper end of the transformer body 1 is fixedly connected with a reflective block 5 on the front side close to the porcelain insulator 4, there are four groups of mounting frames 3, and there are three groups of porcelain insulators 4.
[0035] Through the four groups of mounting frames 3, the purpose of facilitating the installation of the transformer body 1 can be achieved.
[0036] Working principle: When in use, the worker first installs the transformer body 1 at the designated position, and then passes the wire through the inner side of the connection port 710, so that the inner ring 79 contacts the wire, and at the same time passes the wire through the docking frame 74, and then screws the outer threaded ring 76 into the inside of the mounting seat 75, so that the two groups of inner rings 79 are attached to the outside of the wire, and multiple groups of spring washers 78 are elastically acted on, so that the two groups of inner rings 79 clamp the outside of the wire, and then one end of the wire is stripped, and one end of the wire is inserted into the inner side of the mounting head 610, and the wire is welded to the inner side of the mounting head 610, so that the wire is connected to the mounting head 610, and then the docking frame 74 is pushed, and the limiting frame 73 is slid on the outside of the sliding rail 72. , and the limiting frame 73 drives the indicating needle 715 to slide, so that the indicating needle 715 points to the new position of the angle disk 71, so the folding angle of the wire can be clearly observed, so as to avoid the wire folding too much, thereby damaging the battery core of the wire. When the wire is adjusted to a suitable position, the rotary knob 714 is turned, so that the rotary knob 714 drives the screw rod head 713 to rotate, so that the screw rod head 713 moves inside the limiting frame 712, and the screw rod head 713 contacts the sliding rail 72, so as to limit the movement of the limiting frame 73, thereby limiting the position of the wire. At the same time, when the wire swings, the multiple groups of spring washers 78 pull the wires against each other under the elastic action, thereby reducing the swing amplitude of the wire. By plugging the wire into the connector The inner side of the opening 710 is inserted into the inner side of the docking frame 74, and the external threaded ring 76 is screwed into the interior of the mounting seat 75, and the docking frame 74 is pushed again, and the limiting frame 73 is made to slide on the outer side of the sliding rail 72, so it is convenient to adjust the position of the wire, and at the same time, the screw rod head 713 is screwed, and the screw rod head 713 contacts the sliding rail 72, so it is convenient to limit the position of the wire, so as to facilitate the adjustment of the wire to a suitable position, and at the same time, the limiting frame 73 drives the indicator needle 715 to slide, so that the indicator needle 715 points to the new position of the angle disk 71, so the folding angle of the wire can be clearly observed, so as to avoid the wire folding too much, thereby causing damage to the battery core of the wire, at this time, the wire drives the mounting head 610, and makes The mounting head 610 drives the contact frame 69 to rotate, so that the contact frame 69 slides close to the contact ring 64, and the contact frame 69 drives the connecting slot 68 to slide on the outside of the limiting ring 65, and the connecting slot 68 drives the sliding block 67 to slide on the inside of the sliding slot 66, thereby improving the rotation stability of the connecting slot 68, and the connecting slot 68 drives the limiting ring 65 to swing, so that the limiting ring 65 drives the moving block 612 to slide on the inside of the moving slot 611, and at the same time, the contact frame 69 is always in contact with the contact ring 64, so that the contact frame 69 and the contact ring 64 are always electrically connected, thereby ensuring the stability of the wire connection, and the mounting head 610 is driven by the wire, and the mounting head 610 drives the contact frame 69 to rotate close to the contact ring 64,Thereby, the connection slot 68 is rotated around the limiting ring 65, and the contact frame 69 is always in contact with the contact ring 64 during the rotation, so that the contact frame 69 is always connected with the contact ring 64, thereby ensuring the connection stability between the wire and the transformer body 1. At the same time, the connection slot 68 drives the limiting ring 65 to swing, so that the limiting ring 65 drives the moving block 612 to slide in the inner side of the moving groove 611, so that there is elasticity between the wire and the connecting wire 63, thereby avoiding the situation where the wire is pulled too hard and breaks. , and through the multiple sets of spring washers 78, under the action of elasticity, the two sets of inner rings 79 pull the wires, thereby greatly reducing the range of movement of the wires. At the same time, the limiting frame 73 slides on the outside of the sliding rail 72, thereby effectively controlling the folding angle of the wires, and the wires pass through the installation head 610 to drive the contact frame 69 to rotate close to the contact ring 64, thereby greatly improving the connection stability between the wires and the transformer body 1, and reducing the friction between the contact frame 69 and the contact ring 64, so that the wires are connected to the transformer body 1 under any swinging conditions. ,
[0037] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be connected directly or indirectly through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] In the description of this specification, if the terms "one embodiment", "some embodiments", "specific embodiments" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A conductive copper busbar device for a transformer, comprising a transformer body (1), characterized in that: A docking mechanism (6) is provided at the upper end of the transformer body (1), and a limiting mechanism (7) is provided at the rear side of the upper end of the transformer body (1) close to the docking mechanism (6); The docking mechanism (6) comprises a docking line (61) mounted on the upper end of the transformer body (1); a support frame (62) is fixedly connected to the upper end of the transformer body (1) near the rear side of the docking line (61); a connecting line (63) is fixedly connected to the inner side of the supporting frame (62); a limiting ring (65) is movably connected to the outer side of the connecting line (63) near the rear side of the supporting frame (62); a contact ring (64) is mounted on the outer side of the connecting line (63) near the rear side of the limiting ring (65); a sliding groove (66) is provided at the front end of the limiting ring (65); a sliding block (67) is slidably connected to the inner side of the sliding groove (66); a connecting card groove (68) is slidably connected to the outer side of the limiting ring (65); and the contact ring (64) The outer side of the connecting wire (63) is slidably connected to a contact frame (69), the rear end of the contact frame (69) is fixedly connected to a mounting head (610), one end of the connecting wire (63) is provided with a moving groove (611), the inner side of the moving groove (611) is slidably connected to a moving block (612), the rear end of the connecting wire (63) is mounted at the front end of the docking wire (61), the front end of the sliding block (67) is fixedly connected to the inner side wall of the connecting slot (68), the front end of the contact frame (69) is fixedly connected to the rear end of the connecting slot (68), the contact ring (64) and the contact frame (69) are electrically connected, one end of the moving block (612) is fixedly connected to the inner side wall of the limiting ring (65), and the docking mechanism (6) has two groups; The limiting mechanism (7) comprises an angle plate (71) fixedly connected to the upper end of the transformer body (1) near the rear side of the support frame (62); the upper end of the angle plate (71) is fixedly connected to a sliding rail (72); the outer side of the sliding rail (72) is slidably connected to a limiting frame (73); the upper end of the limiting frame (73) is fixedly connected to a docking frame (74); the rear end of the docking frame (74) is fixedly connected to a mounting seat (75); the internal thread of the mounting seat (75) is connected to an external thread ring (76); the rear end of the external thread ring (76) is fixedly connected to a buffer ring (77); the inner wall of the buffer ring (77) is fixedly connected to a spring washer (78); the lower end of the spring washer (78) is fixedly connected to an inner ring (79); and the front end of the buffer ring (77) is fixedly connected to a connection port (710); The lower end of the transformer body (1) is fixedly connected to a base (2), the front end of the base (2) is fixedly connected to a mounting frame (3), the upper end of the transformer body (1) is mounted on a side close to the docking line (61), and the upper end of the transformer body (1) is fixedly connected to a reflective block (5) close to the front side of the porcelain insulator (4), the mounting frame (3) is provided in four groups, and the porcelain insulator (4) is provided in three groups.
2. A conductive copper busbar device for a transformer according to claim 1, characterized in that: A control groove (711) is formed at the rear end of the limiting frame (73); the inner side of the control groove (711) is fixedly connected to the limiting frame (712); the inner side of the limiting frame (712) is threadedly connected to a screw head (713); the rear end of the screw head (713) is fixedly connected to a rotation knob (714); the lower end of the limiting frame (73) is fixedly connected to an indicator needle (715); and the angle disk (71) is in the shape of an arc.
3. A conductive copper bar device for a transformer according to claim 2, characterized in that: The buffer ring (77) is in the shape of an arc, the spring washers (78) are provided in a plurality of groups, the inner ring (79) is in the shape of an arc, and the axis points between the buffer ring (77) and the inner ring (79) are located at the same point.
4. A conductive copper bar device for a transformer according to claim 3, characterized in that: The buffer ring (77) and the inner ring (79) are provided in two groups, the connection port (710) is truncated cone-shaped, and the front end of the screw rod head (713) is in contact with the surface of the sliding rail (72).