Damping base for dry-type transformer

Abstract

The invention discloses a damping base for a dry-type transformer, and relates to the technical field of damping, the damping base for the dry-type transformer comprises a bottom plate, a damping device, a supporting device and a fixing device; wherein the damping device comprises a first support, a long rod, a second support, a storage rack, a third support, a first rotating block, a first frame, a lead screw, a fourth support, a second rotating block, a first rotating rod, a rotating plate and a transformation device, the first support is fixedly connected to the top of the bottom plate, the bottom end of the long rod is rotationally connected to the interior of the first support, and the second support is rotationally connected to the top end of the long rod; the storage rack is fixedly connected to the top of the second support. According to the damping base for the dry-type transformer, when the storage rack moves upwards, the storage rack can be far away from the ground, and when water stains exist on the ground, short circuit caused by water encountering of the transformer can be effectively prevented, and when the transformer is far away from the ground, heat dissipation can be better conducted on the transformer.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction, in particular to a vibration reduction base for a dry-type transformer. Background Art

[0002] Dry-type transformers will vibrate during operation, and long-term vibration may cause equipment failure or performance degradation. To reduce the impact of vibration on the transformer, the use of a shock-absorbing base can effectively reduce the transmission of mechanical vibration, extend the service life of the equipment, and improve operational stability.

[0003] The patent with patent announcement number CN203386566U relates to a shock-absorbing base for dry-type transformers, including a base body, a mounting guide rail is provided at the lower end of the base, a shock-absorbing platform is supported at the upper end of the base by a spring group, a buffer plastic shell is filled between the base and the shock-absorbing platform, and shock-absorbing rubber pads are filled in the buffer plastic shell, and a plurality of positioning blocks are distributed on the upper edge of the shock-absorbing platform; this patent facilitates the positioning of the coil during installation, and adopts the design of arranging a buffer plastic shell filled with shock-absorbing rubber pads between the base and the shock-absorbing platform, so that external vibration waves can be greatly absorbed, weakening the influence of vibration on the dry-type transformer coil, improving the seismic performance, and ensuring the safe use of the dry-type transformer.

[0004] In the above patent, external vibration waves can be largely absorbed, weakening the impact of vibration on the dry-type transformer coil, improving the seismic performance, and ensuring the safe use of the dry-type transformer. However, the working environment of the dry-type transformer is difficult to control. When there is a relatively humid place, it may cause a short circuit in the dry-type transformer. In addition, the above patent may not be able to adjust the height and may not be applicable to all scenarios. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a shock-absorbing base for a dry-type transformer, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a shock-absorbing base for a dry-type transformer, comprising a base plate, a shock-absorbing device, a supporting device and a fixing device; wherein the shock-absorbing device comprises a bracket 1, a long rod, a bracket 2, a storage rack, a bracket 3, a rotating block 1, a frame 1, a screw rod, a bracket 4, a rotating block 2, a rotating rod 1, a rotating plate and a transformer, wherein the bracket 1 is fixedly connected to the top of the base plate, the bottom end of the long rod is rotatably connected to the inside of the bracket 1, the bracket 2 is rotatably connected to the top of the long rod, the storage rack is fixedly connected to the top of the bracket 2, the bracket 3 is fixedly connected to the bottom of the storage rack, the rotating block 1 is rotatably connected to the inside of the bracket 3, the frame 1 is fixedly connected to the top of the base plate, the screw rod is rotatably connected to the inside of the frame 1, the bracket 4 is threadedly connected to the circumferential surface of the screw rod, the rotating block 2 is rotatably connected to the inside of the bracket 4, the rotating rod 1 is fixedly connected to the right side of the screw rod, the rotating plate is rotatably connected to the circumferential surface of the rotating rod 1, and the transformer is placed inside the storage rack.

[0007] According to the above technical solution, the rotating rod 1 rotates and penetrates the frame 1, and a compression spring is arranged between the rotating block 1 and the rotating block 2.

[0008] According to the above technical solution, the supporting device includes a column, a second rotating rod, a second frame and a long column. The column is fixedly connected to the top of the base plate, the bottom end of the second rotating rod is rotatably connected to the top of the column, the second frame is fixedly connected to the bottom of the rack, the long column is slidably connected to the inside of the second frame, and the top end of the second rotating rod is rotatably connected to the right end of the long column.

[0009] According to the above technical solution, the supporting device also includes a frame three, a long block, a spring one, a slider, a rotating rod three, a support frame, a hydraulic rod and a base frame. The frame three is fixedly connected to the bottom of the storage rack, the long block is slidably connected to the inside of the frame three, a long groove is provided on the front and back of the long block, the slider is slidably connected to the inside of the long groove, the spring one is arranged between the slider and the long groove, the top end of the rotating rod three is rotatably connected to the front side of the slider, the left end of the support frame is rotatably connected to the left end of the long block, the bottom end of the rotating rod three is rotatably connected to the front side of the support frame, the fixed end of the hydraulic rod is fixedly connected to the right side of the support frame, and the base frame is fixedly connected to the free end of the hydraulic rod.

[0010] According to the above technical solution, the long column contacts the long block, and the sliding block contacts the frame three.

[0011] According to the above technical solution, the fixing device includes a frame four, a spring two, a vertical block, a horizontal plate, a slide plate, a spring three and a push plate, the vertical block is fixedly connected to the right end of the long column, the horizontal plate is fixedly connected to the top left side of the vertical block, the frame four is fixedly connected to the bottom of the inner wall of the storage rack, the slide plate is slidably connected to the inside of the frame four, the spring two is arranged between the frame four and the slide plate, the spring three is fixedly connected to the left side of the slide plate, and the push plate is fixedly connected to the left side of the spring three.

[0012] According to the above technical solution, the fixing device also includes a long plate and a triangular inclined plate, the long plate is rotatably connected to the rear side of the skateboard, and the triangular inclined plate is fixedly connected to the inside of the storage rack.

[0013] According to the above technical solution, the transverse plate is in contact with the sliding plate, the push plate is in contact with the transformer, and the long plate is in contact with the triangular inclined plate.

[0014] The present invention provides a shock-absorbing base for a dry-type transformer, which has the following beneficial effects: (1) The invention can adjust the height of the transformer by rotating the rotating plate, which can be applied to work in different scenarios. When the shelf moves upward, the shelf will be away from the ground. When there are water stains on the ground, it can effectively prevent the transformer from short-circuiting due to water. When the transformer is away from the ground, the heat of the transformer can be better dissipated. When the transformer is working, the transformer will vibrate. The compression spring will reduce the vibration generated by the transformer when it is working. The compression spring can effectively absorb and suppress these vibrations to prevent vibration from damaging the equipment.

[0015] (2) In this invention, when the base frame rotates, it will contact the ground and support the device, thereby effectively supporting the weight of the device. When the device is not in use, the long block and the support frame will shrink under the elastic force of the spring 1, thereby effectively reducing the space occupied by the support device. When the transformer vibrates, the hydraulic rod can reduce the vibration from the transformer and reduce the shock-absorbing burden of the pressure reducing device.

[0016] (3) In the present invention, when the push plate continues to move to the left, spring three will contract. When spring three contracts, the push plate will generate a thrust in the direction of the transformer. At this time, the transformer will be fixed left and right by the push plate. When the long plate rotates along the inclined surface of the triangular inclined plate in the direction of the transformer, the long plate will contact the transformer. At this time, the long plate will fix the transformer front and back, which can effectively prevent the transformer from tilting and the position of the transformer from shifting when the transformer vibrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a schematic diagram of the position structure of the transformer device of the present invention; Figure 3 This is a schematic diagram of the position structure of the bottom plate and the storage rack of the present invention; Figure 4 It is a schematic diagram of the position structure of the shock absorbing device and the supporting device of the present invention; Figure 5 This is a schematic diagram of the position structure of the compression spring and the long rod of the present invention; Figure 6 It is a schematic diagram of the position structure of the compression spring and the lead screw of the present invention; Figure 7 This is a schematic diagram of the position structure of the support device of the present invention; Figure 8 It is a schematic diagram of the position structure of the rotating rod 3 and the supporting frame of the present invention; Fig. 9 It is a schematic diagram of the position structure of the transformer device and the fixing device of the present invention; Fig.10 For the present invention Figure 3 Schematic diagram of the location structure of part A.

[0018] In the figure: 1, bottom plate; 2, bracket 1; 3, long rod; 4, bracket 2; 5, rack; 6, bracket 3; 7, rotating block 1; 8, compression spring; 9, frame 1; 10, screw rod; 11, bracket 4; 12, rotating block 2; 13, rotating rod 1; 14, rotating plate; 15, transformer; 1601, column; 1602, rotating rod 2; 1603, frame 2; 1604, long column; 1605, frame 3 ; 1606, long block; 1607, spring one; 1608, slider; 1609, rotating rod three; 1610, support frame; 1611, hydraulic rod; 1612, base frame; 1701, frame four; 1702, spring two; 1703, vertical block; 1704, horizontal board; 1705, slide plate; 1706, spring three; 1707, push plate; 1708, long board; 1709, triangular inclined board. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 10An embodiment of the present invention is: a shock-absorbing base for a dry-type transformer, comprising a bottom plate 1, and also comprising a shock-absorbing device; wherein the shock-absorbing device comprises a bracket 2, a long rod 3, a bracket 2 4, a storage rack 5, a bracket 3 6, a rotating block 7, a frame 9, a screw rod 10, a bracket 4 11, a rotating block 2 12, a rotating rod 13, a rotating plate 14 and a transformer 15, wherein the bracket 2 is fixedly connected to the top of the bottom plate 1, the bottom end of the long rod 3 is rotatably connected to the inside of the bracket 2, the bracket 2 4 is rotatably connected to the top of the long rod 3, the storage rack 5 is fixedly connected to the top of the bracket 2 4, the bracket 3 6 is fixedly connected to the bottom of the storage rack 5, and the rotating block 7 is rotatably connected It is connected to the inside of bracket three 6, frame one 9 is fixedly connected to the top of the base plate 1, screw rod 10 is rotatably connected to the inside of frame one 9, bracket four 11 is threadedly connected to the circumferential surface of screw rod 10, rotating block two 12 is rotatably connected to the inside of bracket four 11, rotating rod one 13 is fixedly connected to the right side of screw rod 10, rotating plate 14 is rotatably connected to the circumferential surface of rotating rod one 13, transformer 15 is placed inside the storage rack 5, when transformer 15 is working, transformer 15 will vibrate, compression spring 8 will reduce the vibration generated by transformer 15 when working, compression spring 8 can effectively absorb and suppress these vibrations to prevent vibration from damaging the equipment.

[0021] The rotating rod 13 rotates and penetrates the frame 9. A compression spring 8 is arranged between the rotating block 1 7 and the rotating block 2 12. The rotating rod 13 is fixedly connected to the screw rod 10. When the rotating rod 13 rotates, the rotating rod 13 drives the screw rod 10 to rotate.

[0022] When this embodiment is working: the device needs to first place the transformer 15 inside the storage rack 5, when the rotating plate 14 is rotated, the rotating plate 14 will drive the rotating rod 13 to rotate, when the rotating rod 13 is rotated, the rotating rod 13 will drive the screw rod 10 to rotate, because the screw rod 10 and the bracket 4 11 are threadedly connected, when the screw rod 10 is rotated, the screw rod 10 will drive the bracket 4 11 to move to the left, when the bracket 4 11 moves to the left, the bracket 4 11 will drive the rotating block 2 12 to rotate, when the rotating block 2 12 is rotated, the rotating block 2 12 will drive the compression spring 8 to rotate, when the compression spring 8 is rotated, the compression spring 8 will drive the rotating block When the rotating block 17 rotates, the rotating block 17 will drive the bracket 3 6 to move upward. When the bracket 2 moves upward, the bracket 2 will drive the rack 5 to move upward. When the rack 5 moves upward, the rack 5 will drive the bracket 2 4 to move upward. When the bracket 2 4 moves upward, the bracket 2 4 will drive the long rod 3 to rotate. When the rack 5 moves upward, the rack 5 will move away from the ground. When there is water stain on the ground, it can effectively prevent the transformer 15 from causing a short circuit. When the transformer 15 is working, the transformer 15 will vibrate, and the compression spring 8 will reduce the vibration generated by the transformer 15 when it is working.

[0023] See also Figure 1-Figure 10On the basis of the above embodiment, another embodiment of the present invention further includes a supporting device and a fixing device; the supporting device includes a column 1601, a rotating rod 1602, a frame 1603 and a long column 1604, the column 1601 is fixedly connected to the top of the bottom plate 1, the bottom end of the rotating rod 1602 is rotatably connected to the top of the column 1601, the frame 1603 is fixedly connected to the bottom of the rack 5, the long column 1604 is slidably connected to the inside of the frame 1603, the top end of the rotating rod 1602 is rotatably connected to the right end of the long column 1604, and when the rotating rod 1602 rotates, the rotating rod 1602 will drive the long column 1604 to move to the left.

[0024] The supporting device also includes a frame 3 1605, a long block 1606, a spring 1607, a slider 1608, a rotating rod 3 1609, a supporting frame 1610, a hydraulic rod 1611 and a bottom frame 1612. The frame 3 1605 is fixedly connected to the bottom of the storage rack 5, the long block 1606 is slidably connected to the inside of the frame 3 1605, the long block 1606 is provided with a long groove at the front and back, the slider 1608 is slidably connected to the inside of the long groove, the spring 1607 is arranged between the slider 1608 and the long groove, and the top of the rotating rod 3 1609 is rotated. The base frame 1612 is fixedly connected to the free end of the hydraulic rod 1611. When the base frame 1612 rotates, the base frame 1612 will contact the ground. At this time, the base frame 1612 will support the equipment and can effectively support the weight of the equipment.

[0025] The long column 1604 contacts the long block 1606, the slider 1608 contacts the frame three 1605, the frame three 1605 blocks the slider 1608, and the rotating rod three 1609 rotates.

[0026] The fixing device includes a frame 1701, a spring 1702, a vertical block 1703, a horizontal plate 1704, a slide plate 1705, a spring 1706 and a push plate 1707. The vertical block 1703 is fixedly connected to the right end of the long column 1604, the horizontal plate 1704 is fixedly connected to the top left side of the vertical block 1703, the frame 1701 is fixedly connected to the bottom of the inner wall of the storage rack 5, the slide plate 1705 is slidably connected to the inside of the frame 1701, and the spring 170 2 is arranged between the frame four 1701 and the slide plate 1705, the spring three 1706 is fixedly connected to the left side of the slide plate 1705, and the push plate 1707 is fixedly connected to the left side of the spring three 1706. When the push plate 1707 continues to move to the left, the spring three 1706 will contract. When the spring three 1706 contracts, the push plate 1707 will generate a thrust in the direction of the transformer 15. At this time, the transformer 15 will be fixed left and right by the push plate 1707.

[0027] The fixing device also includes a long plate 1708 and a triangular inclined plate 1709. The long plate 1708 is rotatably connected to the rear side of the slide plate 1705, and the triangular inclined plate 1709 is fixedly connected to the inside of the storage rack 5. The long plate 1708 fixes the transformer device 15 front and back, which can effectively prevent the transformer device 15 from tilting and the position of the transformer device 15 from shifting when the transformer device 15 vibrates.

[0028] The horizontal plate 1704 contacts the sliding plate 1705, the pushing plate 1707 contacts the transformer 15, the long plate 1708 contacts the triangular inclined plate 1709, and the front side of the triangular inclined plate 1709 is provided with an inclined surface, and the inclined surface of the triangular inclined plate 1709 drives the long plate 1708 to rotate.

[0029] When the present embodiment is working, when the rack 5 moves upward, the rack 5 will drive the frame 2 1603 to move upward. When the frame 2 1603 moves upward, the frame 2 1603 will drive the long column 1604 to move upward. When the long column 1604 moves upward, the long column 1604 will be restrained by the rotating rod 2 1602. When the rack 5 continues to move upward, the rack 5 will drive the rotating rod 2 1602 to rotate. When the rotating rod 2 1602 rotates, the rotating rod 2 1602 will drive the long column 1604 to rotate. 04 moves to the left. When long column 1604 moves to the left, long column 1604 contacts long block 1606. When long column 1604 continues to move to the left, long column 1604 pushes long block 1606 to the left. When long block 1606 moves to the left, long block 1606 drives slider 1608 to move to the left. When slider 1608 moves to the left, slider 1608 drives rotating rod three 1609 to move to the left. When slider 1608 moves to the left, slider 1608 contacts frame three 1605. When the long block 1606 continues to move to the left, the frame three 1605 will block the slider 1608. At this time, the slider 1608 will drive the rotating rod three 1609 to rotate. When the rotating rod three 1609 rotates, the rotating rod three 1609 will push the support frame 1610 to rotate. When the support frame 1610 rotates, the support frame 1610 will drive the hydraulic rod 1611 to rotate. When the hydraulic rod 1611 rotates, the hydraulic rod 1611 will drive the bottom frame 1612 to rotate. When the frame 1612 rotates, the base frame 1612 will contact the ground. At this time, the base frame 1612 will support the equipment and can effectively support the weight of the equipment. When the equipment is not in use, the long block 1606 and the support frame 1610 will shrink under the elastic force of the spring 1607, which can effectively reduce the space occupied by the supporting device. When the transformer 15 vibrates, the hydraulic rod 1611 can reduce the vibration from the transformer 15 and reduce the shock absorbing burden of the pressure reducing device.

[0030] When the long column 1604 moves to the left, the long column 1604 will drive the vertical block 1703 to move to the left. When the vertical block 1703 moves to the left, the vertical block 1703 will drive the horizontal plate 1704 to move to the left. When the horizontal plate 1704 moves to the left, the horizontal plate 1704 will contact the slide plate 1705. When the horizontal plate 1704 moves to the left, the horizontal plate 1704 will drive the slide plate 1705 to move to the left. When the slide plate 1705 moves to the left, the slide plate 1705 will move to the left. 705 will drive spring three 1706 to move to the left. When spring three 1706 moves to the left, spring three 1706 will drive push plate 1707 to move to the left. When push plate 1707 moves to the left, push plate 1707 will contact with transformer 15. When slide plate 1705 continues to move to the left, slide plate 1705 will drive push plate 1707 to move to the left. When push plate 1707 continues to move to the left, spring three 1706 will retract. When the spring 1706 contracts, the push plate 1707 will generate a thrust in the direction of the transformer 15. At this time, the transformer 15 will be fixed left and right by the push plate 1707. When the slide plate 1705 moves to the left, the slide plate 1705 will drive the long plate 1708 to move to the left. When the long plate 1708 moves to the left, the long plate 1708 will contact the triangular inclined plate 1709. When the long plate 1708 continues to move to the left, the long plate 1708 will rotate along the inclined surface of the triangular inclined plate 1709 in the direction of the transformer 15. When the long plate 1708 rotates along the inclined surface of the triangular inclined plate 1709 in the direction of the transformer 15, the long plate 1708 will contact the transformer 15. At this time, the long plate 1708 will fix the transformer 15 front and back, which can effectively prevent the transformer 15 from tilting and the position of the transformer 15 from shifting when the transformer 15 vibrates.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing base for a dry-type transformer, comprising a base plate (1), characterized in that: It also includes a shock absorbing device, a supporting device and a fixing device; The shock absorbing device comprises a bracket 1 (2), a long rod (3), a bracket 2 (4), a storage rack (5), a bracket 3 (6), a rotating block 1 (7), a frame 1 (9), a screw rod (10), a bracket 4 (11), a rotating block 2 (12), a rotating rod 1 (13), a rotating plate (14) and a transformer (15), wherein the bracket 1 (2) is fixedly connected to the top of the bottom plate (1), the bottom end of the long rod (3) is rotatably connected to the inside of the bracket 1 (2), the bracket 2 (4) is rotatably connected to the top of the long rod (3), the storage rack (5) is fixedly connected to the top of the bracket 2 (4), and the bracket 3 (6) is fixedly connected to the top of the bracket 2 (4). ) is fixedly connected to the bottom of the storage rack (5), the rotating block one (7) is rotatably connected to the inside of the bracket three (6), the frame one (9) is fixedly connected to the top of the bottom plate (1), the screw rod (10) is rotatably connected to the inside of the frame one (9), the bracket four (11) is threadedly connected to the circumferential surface of the screw rod (10), the rotating block two (12) is rotatably connected to the inside of the bracket four (11), the rotating rod one (13) is fixedly connected to the right side of the screw rod (10), the rotating plate (14) is rotatably connected to the circumferential surface of the rotating rod one (13), and the transformer (15) is placed inside the storage rack (5).

2. The shock-absorbing base for a dry-type transformer according to claim 1, characterized in that: The rotating rod 1 (13) rotates and penetrates the frame 1 (9), and a compression spring (8) is arranged between the rotating block 1 (7) and the rotating block 2 (12).

3. The shock-absorbing base for a dry-type transformer according to claim 2, characterized in that: The supporting device comprises a column (1601), a second rotating rod (1602), a second frame (1603) and a long column (1604), wherein the column (1601) is fixedly connected to the top of the bottom plate (1), the bottom end of the second rotating rod (1602) is rotatably connected to the top of the column (1601), the second frame (1603) is fixedly connected to the bottom of the storage rack (5), the long column (1604) is slidably connected to the inside of the second frame (1603), and the top end of the second rotating rod (1602) is rotatably connected to the right end of the long column (1604).

4. The shock-absorbing base for a dry-type transformer according to claim 3, characterized in that: The supporting device further comprises a frame three (1605), a long block (1606), a spring one (1607), a slider (1608), a rotating rod three (1609), a supporting frame (1610), a hydraulic rod (1611) and a bottom frame (1612); the frame three (1605) is fixedly connected to the bottom of the storage rack (5); the long block (1606) is slidably connected to the inside of the frame three (1605); a long groove is provided on the front and rear sides of the long block (1606); the slider (1608) is slidably connected to the inside of the long groove; Spring one (1607) is arranged between the slider (1608) and the long slot, the top end of the rotating rod three (1609) is rotatably connected to the front side of the slider (1608), the left end of the supporting frame (1610) is rotatably connected to the left end of the long block (1606), the bottom end of the rotating rod three (1609) is rotatably connected to the front side of the supporting frame (1610), the fixed end of the hydraulic rod (1611) is fixedly connected to the right side of the supporting frame (1610), and the bottom frame (1612) is fixedly connected to the free end of the hydraulic rod (1611).

5. The shock-absorbing base for a dry-type transformer according to claim 4, characterized in that: The long column (1604) is in contact with the long block (1606), and the sliding block (1608) is in contact with the frame three (1605).

6. The shock-absorbing base for a dry-type transformer according to claim 5, characterized in that: The fixing device comprises a frame four (1701), a spring two (1702), a vertical block (1703), a horizontal plate (1704), a slide plate (1705), a spring three (1706) and a push plate (1707), wherein the vertical block (1703) is fixedly connected to the right end of the long column (1604), the horizontal plate (1704) is fixedly connected to the top left side of the vertical block (1703), the frame four (1701) is fixedly connected to the bottom of the inner wall of the storage rack (5), the slide plate (1705) is slidably connected to the inside of the frame four (1701), the spring two (1702) is arranged between the frame four (1701) and the slide plate (1705), the spring three (1706) is fixedly connected to the left side of the slide plate (1705), and the push plate (1707) is fixedly connected to the left side of the spring three (1706).

7. The shock-absorbing base for a dry-type transformer according to claim 6, characterized in that: The fixing device further comprises a long plate (1708) and a triangular inclined plate (1709), wherein the long plate (1708) is rotatably connected to the rear side of the slide plate (1705), and the triangular inclined plate (1709) is fixedly connected to the interior of the storage rack (5).

8. The shock-absorbing base for a dry-type transformer according to claim 7, characterized in that: The horizontal plate (1704) contacts the sliding plate (1705), the pushing plate (1707) contacts the voltage transformer (15), and the long plate (1708) contacts the triangular inclined plate (1709).

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