Movable transformer

Abstract

The utility model relates to the technical field of power supply equipment, in particular to a movable transformer which comprises a trailer, transformation equipment and a connecting mechanism, the connecting mechanism comprises a hook plate, a rotating rod, a clamping block, a lower clamping piece, an upper clamping piece and a locking bolt, the hook plate is C-shaped, the clamping block is arranged in the middle of the hook plate, and the upper end of the rotating rod penetrates through a threaded hole in the lower end of the hook plate and then is connected with the clamping block; the lower clamping piece and the upper clamping piece are semicircular, bosses are arranged on the outer sides of the lower clamping piece and the upper clamping piece, the lower clamping piece and the upper clamping piece are oppositely arranged, one end of the lower clamping piece is connected with the clamping block through a rotating shaft, a locking bolt is installed at the other end of the lower clamping piece, one end of the upper clamping piece is connected with the hook plate through a rotating shaft, and a threaded hole corresponding to the locking bolt is formed in the other end of the upper clamping piece. The clamping block is provided with a groove corresponding to the boss of the lower clamping piece, the hook plate is provided with a groove corresponding to the boss of the upper clamping piece, and the two sides of the groove are attached to the bosses. The movable transformer can be electrically connected, power failure loss is avoided, the connecting area of the movable transformer and a high-voltage cable is large, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to a mobile transformer. Background Art

[0002] With the development of economy, the load of the power grid has been continuously climbing, and the overload phenomenon of substations frequently occurs. To relieve the overload pressure of substations, mobile transformers have been widely used. Mobile transformers need to be connected to high-voltage electricity. The traditional method is to cut off the power first and then connect the wires, which is time-consuming and laborious. The power cut will also affect the electricity consumption of nearby residents and enterprises, causing economic losses.

[0003] In the prior art, the invention patent with the application publication number CN108075386A discloses an auxiliary device for live operation of a substation, including a locking mechanism and a supporting mechanism, and the locking mechanism and the supporting mechanism are in a clamping fit; the locking mechanism includes a locking frame, the inner wall of the bottom end of the locking frame is provided with a first through hole, a first guiding column slidably matched with the locking frame is arranged in the first through hole, a first spring is sleeved on the first guiding column, a first pressing block is fixedly connected to the upper end of the first guiding column, and a clamping groove is arranged on the side wall of the lower end of the first guiding column; a first groove is arranged between the bottom surface and the inner wall of the locking frame, and a conducting wire is installed in the first groove; a second groove communicated with the first through hole is arranged on the outer wall of the bottom end of the locking frame; the supporting mechanism includes a supporting tube slidably matched with the second groove, a connecting tube slidably matched with the supporting tube is arranged in the inner cavity of the supporting tube, and a clamping mechanism clamped and matched with the first guiding column is installed in the inner cavity of the connecting tube. In summary, the invention has simple operation, strong practicability, good power connection effect and can realize power connection at a high place without power cut.

[0004] In the process of realizing the present utility model, the inventor found that there are at least the following problems in the prior art: since the cross-section of the cable is circular, the contact area between the connection structure and the cable is very small, and electric sparks are likely to occur at the contact point, which has a certain danger. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present utility model develops a mobile transformer, which can be connected with electricity while live, avoiding power cut losses, and having a large connection area with high-voltage cables, improving safety.

[0006] The technical solution for the present utility model to solve the technical problem is as follows: An embodiment of the present utility model provides a mobile transformer, which includes a trailer, a voltage transformation device, and a connection mechanism. The voltage transformation device is fixed on the trailer, and the voltage transformation device is provided with an input cable. The input cable is connected to a high-voltage cable through the connection mechanism. The connection mechanism includes a hook plate, a rotating rod, a clamping block, a lower clamping piece, an upper clamping piece, and a locking bolt. The hook plate is C-shaped, the clamping block is arranged in the middle of the hook plate, the top surface of the clamping block is arc-shaped, and the surface of the hook plate opposite to the top surface of the clamping block is also arranged as a corresponding arc shape; the top of the rotating rod is a threaded rod, and the lower end of the hook plate is provided with a threaded hole corresponding to the rotating rod. The upper end of the rotating rod passes through the threaded hole at the lower end of the hook plate and is connected to the clamping block; the lower clamping piece and the upper clamping piece are semi-circular, convex platforms are arranged on the outer sides of the lower clamping piece and the upper clamping piece, the lower clamping piece and the upper clamping piece are arranged opposite to each other, one end of the lower clamping piece is connected to the clamping block through a rotating shaft and the other end is installed with a locking bolt, one end of the upper clamping piece is connected to the hook plate through a rotating shaft and the other end is provided with a threaded hole corresponding to the locking bolt, a groove corresponding to the convex platform of the lower clamping piece is arranged on the clamping block, and a groove corresponding to the convex platform of the upper clamping piece is arranged on the hook plate, and both sides of the groove are attached to the convex platform.

[0007] As an optimization, the cross-section of the convex platform is rectangular.

[0008] As an optimization, a positioning groove is arranged at the top of the rotating rod, an installation hole is arranged at the bottom surface of the clamping block, positioning screw holes are arranged on both sides of the installation hole, and clamping bolts are installed in the positioning screw holes and the clamping bolts are inserted into the positioning groove.

[0009] As an optimization, the lower end of the rotating rod is arranged in a Z shape.

[0010] As an optimization, a U-shaped groove is arranged on the side surface of the clamping block, the width of the U-shaped groove is equal to the thickness of the hook plate, and the hook plate is inserted into the U-shaped groove of the clamping block.

[0011] As an optimization, the connection mechanism further includes a sleeve. The sleeve is a hollow circular tube, the top of the sleeve is connected to the bottom surface of the hook plate, and the rotating rod passes through the sleeve.

[0012] As an optimization, a circular ring is arranged at the bottom of the locking bolt, and the connection mechanism further includes a hook rod. A hook is arranged at the top of the hook rod. The hook rod is an insulating rod. By inserting the hook at the top of the hook rod into the circular ring at the bottom of the locking bolt, the locking and removal work of the locking bolt can be carried out.

[0013] As an optimization, a retaining ring is arranged in the middle of the locking bolt, a counterbore corresponding to the retaining ring is arranged at the top of the lower clamping piece, and the depth of the counterbore is greater than the thickness of the retaining ring.

[0014] The effects provided in the utility model content are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solutions have the following advantages or beneficial effects:

[0015] 1. By setting a hook plate, a rotating rod, and clamping blocks, with the rotating rod being an insulating rod, during use, first hook the high-voltage cable with the hook plate, and then rotate the rotating rod to make the clamping blocks clamp the high-voltage cable to achieve the initial connection with the high-voltage cable. Rotate the locking bolt and screw it into the upper clamping piece, which can make the lower clamping piece and the upper clamping piece hold the high-voltage cable tightly, achieving a large contact area with the high-voltage cable. At the same time, since both sides of the groove fit with the convex platform, it can ensure the contact area between the lower clamping piece, the upper clamping piece, the clamping blocks, and the hook plate. This mobile transformer can be connected while energized, avoiding power outage losses, and having a large connection area with the high-voltage cable, improving safety.

[0016] 2. By setting the cross-section of the convex platform to be rectangular, the fit between the groove and the convex platform can be maintained. By setting a positioning groove at the top of the rotating rod and inserting a positioning bolt into the positioning groove, the up-and-down position of the rotating rod relative to the clamping block can be restricted, while not affecting the rotation of the rotating rod. By setting the lower end of the rotating rod to be Z-shaped, it is convenient to rotate the rotating rod. By setting the hook plate to insert into the U-shaped groove of the clamping block, the position of the clamping block relative to the hook plate can be restricted, preventing the clamping block from rotating. By setting a sleeve, it is convenient to fix the hook plate at a long distance, facilitating the operation of connecting the high-voltage cable.

[0017] 3. By setting a retaining ring in the middle of the locking bolt and a counterbore at the top of the lower clamping piece, it can not only prevent the locking bolt from falling off but also rotate the locking bolt, facilitating the clamping of the lower clamping piece and the upper clamping piece. Description of the Drawings

[0018] Figure 1 It is the overall structure diagram of an embodiment of the present utility model.

[0019] Figure 2 It is Figure 1 the partial enlarged view of area A in

[0020] Figure 3 It is the front view of the connecting mechanism in an embodiment of the present utility model.

[0021] Figure 4 It is Figure 3 the sectional view along the B-B direction.

[0022] Figure 5 It is the three-dimensional view of the connecting mechanism in an embodiment of the present utility model.

[0023] Figure 6 It is Figure 5 the partial enlarged view of area C in

[0024] Figure 7 It is Figure 4 the partial enlarged view of area D in

[0025] Figure 8 It is the three-dimensional view of the upper clamping piece in an embodiment of the present utility model.

[0026] Figure 9 This is a perspective view of the lower clamping piece in an embodiment of the present utility model.

[0027] Figure 10 This is a front view of the locking bolt in an embodiment of the present utility model.

[0028] Wherein: trailer 1, transformer equipment 2, connecting mechanism 3, input cable 21, hook plate 31, sleeve 32, rotating rod 33, clamping block 34, hook rod 35, lower clamping piece 36, upper clamping piece 37, locking bolt 38, positioning bolt 39, convex platform 361. Specific embodiments

[0029] In order to clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings.

[0030] Figures 1 to 10 This is the first embodiment of the present utility model. As Figure 1 shown, a mobile transformer includes a trailer 1, transformer equipment 2, and a connecting mechanism 3. The transformer equipment 2 is fixed on the trailer 1. The transformer equipment 2 is provided with an input cable 21, and the input cable 21 is connected to a high-voltage cable through the connecting mechanism 3. As Figure 5 shown, the connecting mechanism 3 includes a hook plate 31, a rotating rod 33, a clamping block 34, a lower clamping piece 36, an upper clamping piece 37, and a locking bolt 38. The hook plate 31 is C-shaped. The clamping block 34 is arranged in the middle of the hook plate 31. The top surface of the clamping block 34 is arc-shaped, and the surface of the hook plate 31 opposite to the top surface of the clamping block 34 is also arranged as a corresponding arc shape. As Figure 4 shown, the top of the rotating rod 33 is a threaded rod. The lower end of the hook plate 31 is provided with a threaded hole corresponding to the rotating rod 33. The upper end of the rotating rod 33 passes through the threaded hole at the lower end of the hook plate 31 and then connects to the clamping block 34. As Figure 8 , Figure 9 shown, the lower clamping piece 36 and the upper clamping piece 37 are semi-circular. The outer sides of the lower clamping piece 36 and the upper clamping piece 37 are provided with convex platforms 361. As Figure 6 shown, the lower clamping piece 36 and the upper clamping piece 37 are arranged opposite to each other. One end of the lower clamping piece 36 is connected to the clamping block 34 through a rotating shaft, and the other end is installed with a locking bolt 38. One end of the upper clamping piece 37 is connected to the hook plate 31 through a rotating shaft, and the other end is provided with a threaded hole corresponding to the locking bolt 38. The clamping block 34 is provided with a groove corresponding to the convex platform 361 of the lower clamping piece 36, and the hook plate 31 is provided with a groove corresponding to the convex platform 361 of the upper clamping piece 37. The two sides of the groove are in contact with the convex platform 361. The cross-section of the convex platform 361 is rectangular. By setting the cross-section of the convex platform 361 to be rectangular, the contact between the groove and the convex platform 361 can be maintained.

[0031] As Figure 7As shown, a positioning groove is provided at the top of the rotating rod 33. An installation hole is provided at the bottom surface of the clamping block 34. Positioning screw holes are provided on both sides of the installation hole, and a positioning bolt 39 is installed in the positioning screw holes. The positioning bolt 39 is inserted into the positioning groove. By providing a positioning groove at the top of the rotating rod 33 and inserting the positioning bolt 39 into the positioning groove, the up-and-down position of the rotating rod 33 relative to the clamping block 34 can be restricted, while not affecting the rotation of the rotating rod 33.

[0032] As Figure 5 shown, the lower end of the rotating rod 33 is provided in a Z shape. By providing the lower end of the rotating rod 33 in a Z shape, the rotation of the rotating rod 33 can be facilitated. A U-shaped groove is provided on the side surface of the clamping block 34. The width of the U-shaped groove is equal to the thickness of the hook plate 31. The hook plate 31 is inserted into the U-shaped groove of the clamping block 34. By providing the hook plate 31 inserted into the U-shaped groove of the clamping block 34, the position of the clamping block 34 relative to the hook plate 31 can be restricted, avoiding the rotation of the clamping block 34. The connecting mechanism 3 further includes a sleeve 32. The sleeve 32 is a hollow circular tube. The top of the sleeve 32 is connected to the bottom surface of the hook plate 31. The rotating rod 33 passes through the sleeve 32. By providing the sleeve 32, the fixing of the hook plate 31 at a long distance can be facilitated, facilitating the operation of connecting the high-voltage cable. A circular ring is provided at the bottom of the locking bolt 38. The connecting mechanism 3 further includes a hook rod 35. A hook is provided at the top of the hook rod 35. The hook rod 35 is an insulating rod. By inserting the hook at the top of the hook rod 35 into the circular ring at the bottom of the locking bolt 38, the locking and removal of the locking bolt 38 can be performed.

[0033] As Figure 9 、 Figure 10 shown, a retaining ring is provided in the middle of the locking bolt 38. A counterbore corresponding to the retaining ring is provided at the top of the lower clamping piece 36. The depth of the counterbore is greater than the thickness of the retaining ring. By providing a retaining ring in the middle of the locking bolt 38 and a counterbore at the top of the lower clamping piece 36, the falling of the locking bolt 38 can be avoided, and the locking bolt 38 can be rotated, facilitating the clamping of the lower clamping piece 36 and the upper clamping piece 37.

[0034] By providing the hook plate 31, the rotating rod 33, and the clamping block 34, and the rotating rod 33 being an insulating rod, during use, first hook the high-voltage cable through the hook plate 31, and then rotate the rotating rod 33 to make the clamping block 34 clamp the high-voltage cable to achieve the preliminary connection with the high-voltage cable. Rotate the locking bolt 38 and screw it into the upper clamping piece 37, so that the lower clamping piece 36 and the upper clamping piece 37 can clamp the high-voltage cable, achieving a large-area contact with the high-voltage cable. At the same time, since both sides of the groove are in contact with the convex platform 361, the contact area between the lower clamping piece 36, the upper clamping piece 37, the clamping block 34, and the hook plate 31 can be ensured. This mobile transformer can be connected while energized, avoiding power outage losses, and having a large connection area with the high-voltage cable, improving safety.

[0035] Although the specific implementation manners of the utility model are described above in conjunction with the accompanying drawings, they do not limit the protection scope of the utility model. Based on the technical solution of the utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the utility model.

Claims

1. A mobile transformer, comprising a trailer (1), a voltage transformation device (2), and a connecting mechanism (3). The voltage transformation device (2) is fixed on the trailer (1). The voltage transformation device (2) is provided with an input cable (21), and the input cable (21) is connected to a high-voltage cable through the connecting mechanism (3). It is characterized in that: The connecting mechanism (3) includes a hook plate (31), a rotating rod (33), a clamping block (34), a lower clamping piece (36), an upper clamping piece (37), and a locking bolt (38). The hook plate (31) is C-shaped. The clamping block (34) is arranged in the middle of the hook plate (31). The top surface of the clamping block (34) is arc-shaped, and the surface of the hook plate (31) opposite to the top surface of the clamping block (34) is also arranged as a corresponding arc shape. The top of the rotating rod (33) is a threaded rod, and a threaded hole corresponding to the rotating rod (33) is arranged at the lower end of the hook plate (31). The upper end of the rotating rod (33) passes through the threaded hole at the lower end of the hook plate (31) and then connects the clamping block (34). The lower clamping piece (36) and the upper clamping piece (37) are semi-circular. Convex platforms (361) are arranged on the outer sides of the lower clamping piece (36) and the upper clamping piece (37). The lower clamping piece (36) and the upper clamping piece (37) are arranged opposite to each other. One end of the lower clamping piece (36) is connected to the clamping block (34) through a rotating shaft, and the other end is installed with a locking bolt (38). One end of the upper clamping piece (37) is connected to the hook plate (31) through a rotating shaft, and the other end is provided with a threaded hole corresponding to the locking bolt (38). Grooves corresponding to the convex platforms (361) of the lower clamping piece (36) are arranged on the clamping block (34), and grooves corresponding to the convex platforms (361) of the upper clamping piece (37) are arranged on the hook plate (31). The two sides of the grooves are attached to the convex platforms (361).

2. The mobile transformer according to claim 1, characterized in that, The cross-section of the convex platform (361) is rectangular.

3. A mobile transformer according to claim 1, wherein, A positioning groove is arranged at the top of the rotating rod (33). An installation hole is arranged at the bottom surface of the clamping block (34). Positioning screw holes are arranged on both sides of the installation hole. A positioning bolt (39) is installed in the positioning screw holes, and the positioning bolt (39) is inserted into the positioning groove.

4. A mobile transformer according to claim 1, characterized in that, The lower end of the rotating rod (33) is arranged in a Z shape.

5. A mobile transformer according to claim 1, characterized in that, A U-shaped groove is arranged on the side surface of the clamping block (34). The width of the U-shaped groove is equal to the thickness of the hook plate (31). The hook plate (31) is inserted into the U-shaped groove of the clamping block (34).

6. The mobile transformer according to claim 1, wherein, The connecting mechanism (3) further includes a sleeve (32). The sleeve (32) is a hollow circular tube. The top of the sleeve (32) is connected to the bottom surface of the hook plate (31). The rotating rod (33) passes through the sleeve (32).

7. A mobile transformer according to claim 1, characterized in that, A circular ring is arranged at the bottom of the locking bolt (38). The connecting mechanism (3) further includes a hook rod (35). A hook is arranged at the top of the hook rod (35).

8. A mobile transformer according to claim 1, characterized in that, A retaining ring is arranged in the middle of the locking bolt (38). A counterbore corresponding to the retaining ring is arranged at the top of the lower clamping piece (36). The depth of the counterbore is greater than the thickness of the retaining ring.

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