Three-phase voltage transformer

Abstract

The utility model relates to the technical field of three-phase voltage transformers, in particular to a three-phase voltage transformer which comprises a three-phase voltage transformer body, a plurality of binding posts are fixedly installed on the surface of the upper end of the three-phase voltage transformer body, and the upper ends of the binding posts are all fixedly connected with bolts. Two connecting frames are fixedly connected to the bottom face of the three-phase voltage transformer body, and two mounting frames are slidably connected to the bottom faces of the two connecting frames. By arranging the auxiliary mechanism, copper sheets or external wires can be conveniently and automatically fixed to the binding posts, and the binding posts can be integrally connected at the same time; according to the three-phase voltage transformer, the working efficiency of wiring of the binding posts or connecting copper sheets is effectively improved, the specific positions of the mounting frame on the bottom surfaces of the two connecting frames can be adjusted according to different mounting positions, the three-phase voltage transformer adapts to different mounting positions, and the three-phase voltage transformer is more flexible to mount and higher in applicability.

Description

Technical Field

[0001] This utility model relates to the field of three-phase voltage transformer technology, specifically a three-phase voltage transformer. Background Technology

[0002] A three-phase voltage transformer is a device used to measure the voltage in a three-phase power system. Its main function is to convert the voltage in a high-voltage power system into a low-voltage signal suitable for measurement, protection, and control. Similar to a transformer, a voltage transformer is an instrument used to transform voltage. A three-phase voltage transformer needs to be connected to copper plates or wires. The main purpose of connecting copper plates is to ensure safety and maintain the normal operation of the equipment, while the main purpose of connecting wires is to realize the voltage measurement, protection, and metering functions.

[0003] In the prior art, such as the three-phase voltage transformer proposed in patent application number "CN202222919966.8", the end of the locking structure is fixedly connected to the end of the voltage transformer housing, the locking structure locks and connects to the baffle, the heat dissipation structure is located at the rear end of the voltage transformer housing, and the clamping structure is inside the voltage transformer body. This utility model can provide protection, prevent falling objects, and facilitate maintenance.

[0004] However, in the aforementioned patent application, when wiring or connecting copper sheets to the terminals of the three-phase voltage transformer, it is necessary to rotate the connecting parts, such as nuts, on each terminal in sequence. This requires the use of tools and manual tightening, which is quite troublesome and affects the efficiency of wiring or connecting copper sheets to the three-phase voltage transformer. Utility Model Content

[0005] The purpose of this invention is to provide a three-phase voltage transformer to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A three-phase voltage transformer includes a three-phase voltage transformer body. A plurality of terminals are fixedly mounted on the upper surface of the three-phase voltage transformer body, and bolts are fixedly connected to the upper ends of each of the terminals. Two connecting frames are fixedly connected to the bottom surface of the three-phase voltage transformer body. Two mounting frames are slidably connected to the bottom surfaces of the two connecting frames. Limiting sleeves are rotatably connected to the outer walls of the two mounting frames near both ends via shafts. A plurality of connecting mechanisms are provided on the outer walls of the two connecting frames. An auxiliary mechanism is provided on the upper surface of the three-phase voltage transformer body. Mounting holes are provided through the upper surfaces of the mounting frames near both sides. Copper sheets are sleeved between the bolts.

[0008] The auxiliary mechanism includes four fixed shells, all of which are fixedly installed on the upper surface of the three-phase voltage transformer body. A bearing plate is slidably connected between the interiors of the four fixed shells, and a vertical rod is fixedly installed inside each of the four fixed shells.

[0009] Preferably, each of the four vertical rods is fitted with a slider and a support spring, and each of the four sliders is fixedly connected to the support plate.

[0010] Preferably, a plurality of nuts are rotatably connected to the upper surface of the bearing plate, and two hollow gears are fixedly connected to the outer wall of each of the plurality of nuts.

[0011] Preferably, the two hollow gears are fitted with chains, a support plate is fixedly installed on the upper surface of the bearing plate, a transmission gear is rotatably connected to the top of the support plate through a shaft, a motor is installed on the upper surface of the support plate, and the output end of the motor is connected to the transmission gear.

[0012] Preferably, the upper surface of the bearing plate is provided with a plurality of annular grooves, and each of the plurality of annular grooves is slidably connected with an L-shaped sliding block, and the upper ends of the plurality of L-shaped sliding blocks are fixedly connected to nuts.

[0013] Preferably, the connecting mechanism includes a fixing block, which is fixedly installed on the outer side wall of the connecting frame, and an insert is inserted into the upper surface of the fixing block;

[0014] The outer wall of the fixed block has two vertical grooves, and a sliding rod is fixedly installed inside each of the two vertical grooves. A movable block and a return spring are sleeved on the outside of the sliding rod, and one end of the movable block is fixedly connected to the insert block. A limit groove is opened at the top of the inner side of the limiting sleeve plate, and the limit groove fits into the insert block.

[0015] Preferably, the outer wall of the fixed block is fixedly connected to two connecting plates, and the outer walls of the two connecting plates are each provided with fixing nails. The outer wall of the movable block is provided with fixing holes, and the fixing holes fit into the fixing nails.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this utility model, each nut on the bearing plate is respectively fitted onto the outside of each bolt. A motor on the support plate drives a transmission gear to rotate, which, in conjunction with a hollow gear, drives one of the nuts to rotate and move downwards along the outside of the bolt, causing the bearing plate to continue moving downwards automatically. Simultaneously, a chain drives the other nuts to rotate, causing the bearing plate to move downwards and compress the copper sheet, automatically pressing and fixing the copper sheet onto each terminal. Similarly, when connecting wires, one end of each wire is fitted onto each bolt, and the wires are simultaneously pressed and fixed onto each terminal. Through the above operations, copper sheets or external wires can be conveniently fixed to the terminals without sequential connection, allowing for simultaneous connection of multiple terminals, effectively improving the efficiency of wiring or connecting copper sheets.

[0018] 2. In this utility model, the specific position of the mounting frame on the bottom surface of the two connecting frames can be adjusted according to different installation positions to adapt to different installation positions. During adjustment, the mounting frame is slid along the bottom surface of the connecting frames. After sliding to the desired position, the limiting sleeve on the mounting frame is rotated to fit the limiting sleeve on the outside of the corresponding fixing block. The limiting sleeve can be fixed on the fixing block by the movable block, the insert block, the fixing groove and the fixing nail, thus completing the fixing of the mounting frame and completing the position adjustment of the mounting frame. This makes the installation of the three-phase voltage transformer more flexible and more applicable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the three-phase voltage transformer body, the connecting frame, and the mounting frame in this utility model;

[0022] Figure 3 This is a cross-sectional view of the fixing shell in this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the auxiliary mechanism in this utility model;

[0024] Figure 5 This is a cross-sectional view of the support plate in this utility model;

[0025] Figure 6 This is a schematic diagram of the installation frame and the limiting sleeve in this utility model;

[0026] Figure 7 This utility model Figure 6 Enlarged view of point A in the middle.

[0027] The attached figures are labeled as follows:

[0028] 1. Three-phase voltage transformer body; 2. Terminal block; 3. Connecting frame; 4. Mounting frame; 5. Bolt; 6. Fixing shell; 7. Vertical rod; 8. Slider; 9. Copper sheet; 10. Bearing plate; 11. Nut; 12. Hollow gear; 13. Chain; 14. Transmission gear; 15. L-shaped sliding block; 17. Limiting sleeve; 18. Fixing block; 19. Movable block; 20. Insertion block; 21. Connecting plate; 22. Fixing nail; 23. Annular groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] A three-phase voltage transformer, such as Figures 1-7 As shown, the device includes a three-phase voltage transformer body 1. Several terminals 2 are fixedly installed on the upper surface of the three-phase voltage transformer body 1. Bolts 5 are fixedly connected to the upper ends of the terminals 2. Two connecting frames 3 are fixedly connected to the bottom surface of the three-phase voltage transformer body 1. Two mounting frames 4 are slidably connected to the bottom surfaces of the two connecting frames 3. Limiting sleeves 17 are rotatably connected to the outer walls of the two mounting frames 4 near both ends via shafts. Several connecting mechanisms are provided on the outer walls of the two connecting frames 3. An auxiliary mechanism is provided on the upper surface of the three-phase voltage transformer body 1. Mounting holes are opened through the upper surface of the mounting frames 4 near both sides. Copper sheets 9 are sleeved between the bolts 5. The auxiliary mechanism includes four fixed shells 6. The four fixed shells 6 are fixedly installed on the upper surface of the three-phase voltage transformer body 1. A bearing plate 10 is slidably connected between the four fixed shells 6. Vertical rods 7 are fixedly installed inside the four fixed shells 6.

[0031] Each of the four vertical rods 7 is fitted with a slider 8 and a support spring. All four sliders 8 are fixedly connected to the bearing plate 10. Several nuts 11 are rotatably connected to the upper surface of the bearing plate 10. Two hollow gears 12 are fixedly connected to the outer wall of each nut 11. The bottom end of the support spring is fixedly connected to the bottom end of the inner part of the fixed shell 6. The slider 8 can be moved out from the vertical rod 7. The support spring supports the slider 8, but the support spring is not connected to the slider 8.

[0032] Two hollow gears 12 are fitted with chains 13. A support plate is fixedly installed on the upper surface of the support plate 10. The top of the support plate is rotatably connected to a transmission gear 14 via a shaft. A motor is installed on the upper surface of the support plate, and the output end of the motor is connected to the transmission gear 14. Several annular grooves 23 are formed on the upper surface of the support plate 10. L-shaped sliding blocks 15 are slidably connected inside the several annular grooves 23. The upper ends of the several L-shaped sliding blocks 15 are fixedly connected to nuts 11. The inner wall of the nut 11 is threaded to fit the bolt 5. When the nut 11 rotates, each L-shaped sliding block 15 moves along the inside of the annular groove 23 with the nut 11, which can limit the rotation position of the nut 11 so that the nut 11 always rotates on the upper surface of the support plate 10.

[0033] When using the three-phase voltage transformer, if it is necessary to wire the various connecting frames 3 on the main body 1, or to connect the copper sheets 9, the copper sheets 9 can be sleeved on the outside of each bolt 5, and then each slider 8 can be sleeved on each vertical rod 7. This allows the bearing plate 10 to move downwards between the four fixed shells 6 through the slider 8 and the vertical rod 7, so that each nut 11 on the bearing plate 10 is sleeved on the outside of each bolt 5. Then, the motor on the support plate drives the transmission gear 14 to rotate, which can drive one of the hollow gears 12 to rotate, thereby driving one of the nuts 11 to rotate and move downwards along the outside of the bolt 5, causing the bearing plate 10 to continue to move downwards automatically. At the same time, when the nut 11 rotates, another hollow gear connected to its outer wall... Gear 12 rotates simultaneously, driving chain 13 for transmission. Similarly, in conjunction with several other hollow gears 12 and another chain 13, it can drive several other nuts 11 to rotate simultaneously, causing the bearing plate 10 to move downward and press the copper sheet 9, automatically pressing and fixing the copper sheet 9 onto each terminal 2. Similarly, when it is necessary to connect wires, after putting one end of each wire onto each bolt 5, each wire can be pressed and fixed onto each terminal 2 simultaneously. Through the above operations, the copper sheet 9 or external wires can be conveniently fixed onto the terminal 2 without sequential connection. Multiple terminal 2 can be connected simultaneously as a whole, effectively saving work efficiency in wiring or connecting copper sheet 9 to terminal 2.

[0034] The connecting mechanism includes a fixing block 18, which is fixedly installed on the outer side wall of the connecting frame 3. An insert block 20 is inserted into the upper surface of the fixing block 18. Two vertical grooves are opened on the outer side wall of the fixing block 18. A slide rod is fixedly installed inside each of the two vertical grooves. A movable block 19 and a return spring are sleeved on the outside of the slide rod. One end of the movable block 19 is fixedly connected to the insert block 20. A limit groove is opened at the top of the inner side of the limiting sleeve 17, and the limit groove fits with the insert block 20. The return spring plays the role of resetting the movable block 19.

[0035] Two connecting plates 21 are fixedly connected to the outer wall of the fixed block 18. Fixing nails 22 are inserted into the outer walls of both connecting plates 21. Fixing holes are opened on the outer wall of the movable block 19, and these holes fit into the fixing nails 22. The fixing nails 22 are inserted through the connecting plates 21 into the fixing holes to fix the position of the movable block 19.

[0036] Specifically, when the three-phase voltage transformer body 1 needs to be installed in a designated location, the mounting frame 4 can be installed and fixed in the designated position. The mounting frame 4 has mounting holes, and with the help of external screws and other connecting parts, the fixing can be completed. This is existing technology and will not be described in detail here.

[0037] Depending on the installation location, the specific position of the mounting frame 4 on the bottom surface of the two connecting frames 3 can be adjusted to adapt to different installation positions. During adjustment, the mounting frame 4 is slid along the bottom surface of the connecting frame 3. After sliding to the desired position, the limiting sleeve 17 on the mounting frame 4 is rotated to fit the limiting sleeve 17 onto the outside of the corresponding fixing block 18. Then, the movable block 19 is moved up along the sliding rod, driving the insert block 20 to be inserted into the fixing groove. The fixing nail 22 is inserted through the connecting plate 21 into the fixing hole to fix the position of the movable block 19. The limiting sleeve 17 can be fixed on the fixing block 18 to complete the fixing of the mounting frame 4, thereby completing the position adjustment of the mounting frame 4. This makes the installation of the three-phase voltage transformer more flexible and more applicable.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A three-phase voltage transformer, comprising a three-phase voltage transformer body (1), characterized in that, The upper surface of the three-phase voltage transformer body (1) is fixedly equipped with several terminals (2), and bolts (5) are fixedly connected to the upper ends of the terminals (2). The bottom surface of the three-phase voltage transformer body (1) is fixedly connected with two connecting frames (3). The bottom surfaces of the two connecting frames (3) are slidably connected with two mounting frames (4). The outer walls of the two mounting frames (4) are rotatably connected to limit sleeves (17) by shafts near both ends. The outer walls of the two connecting frames (3) are provided with several connecting mechanisms. The upper surface of the three-phase voltage transformer body (1) is provided with auxiliary mechanisms. The upper surface of the mounting frames (4) is provided with mounting holes near both sides. Copper sheets (9) are sleeved between the bolts (5). The auxiliary mechanism includes four fixed shells (6), all of which are fixedly installed on the upper surface of the three-phase voltage transformer body (1). A bearing plate (10) is slidably connected between the four fixed shells (6), and a vertical rod (7) is fixedly installed inside each of the four fixed shells (6).

2. A three-phase voltage transformer according to claim 1, characterized in that, Each of the four vertical rods (7) is fitted with a slider (8) and a supporting spring, and each of the four sliders (8) is fixedly connected to the bearing plate (10).

3. A three-phase voltage transformer according to claim 2, characterized in that, The upper surface of the bearing plate (10) is rotatably connected to several nuts (11), and two hollow gears (12) are fixedly connected to the outer wall of each nut (11).

4. A three-phase voltage transformer according to claim 3, characterized in that, Two hollow gears (12) are fitted with chains (13) on their exteriors. A support plate is fixedly installed on the upper surface of the bearing plate (10). A transmission gear (14) is rotatably connected to the top of the support plate through a shaft. A motor is installed on the upper surface of the support plate, and the output end of the motor is connected to the transmission gear (14).

5. A three-phase voltage transformer according to claim 3, characterized in that, The upper surface of the bearing plate (10) is provided with a number of annular grooves (23), and each of the annular grooves (23) is slidably connected with an L-shaped sliding block (15), and the upper ends of the L-shaped sliding blocks (15) are fixedly connected with nuts (11).

6. A three-phase voltage transformer according to claim 1, characterized in that, The connecting mechanism includes a fixing block (18), which is fixedly installed on the outer side wall of the connecting frame (3), and an insert (20) is inserted into the upper surface of the fixing block (18); The outer wall of the fixed block (18) has two vertical grooves, and a sliding rod is fixedly installed inside each of the two vertical grooves. A movable block (19) and a return spring are sleeved on the outside of the sliding rod. One end of the movable block (19) is fixedly connected to the insert block (20). The top of the inner end of the limiting sleeve plate (17) has a limiting groove, and the limiting groove matches the insert block (20).

7. A three-phase voltage transformer according to claim 6, characterized in that, The outer wall of the fixed block (18) is fixedly connected to two connecting plates (21), and the outer walls of the two connecting plates (21) are each provided with a fixing nail (22). The outer wall of the movable block (19) is provided with a fixing hole, and the fixing hole matches the fixing nail (22).

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