A voltage transformer assembly that is easy to replace

Abstract

The present invention relates to a voltage transformer assembly that is easy to replace, including a shield and a cover plate sealed on the upper end of the shield, one side of the shield has a flange protruding outward, and the flange surrounds an open portion connected to the inner cavity of the shield; a voltage transformer integrated assembly is slidably installed in the shield, and a plurality of independent voltage transformers are integrated on the voltage transformer integrated assembly, and the voltage transformer integrated assembly can switch the positions of each voltage transformer after the shield is rotated and can push any voltage transformer integrated on the voltage transformer integrated assembly out of the open portion of the shield. The present invention creatively integrates and assembles multiple voltage transformers, and with the help of the voltage transformer integrated assembly, the positions of each voltage transformer can be switched after the shield is rotated and any voltage transformer integrated on the voltage transformer integrated assembly can be pushed out of the open portion of the shield, thereby realizing the rapid replacement of the voltage transformer and improving the replacement efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of voltage transformers, in particular to a voltage transformer component which is easy to replace. Background Art

[0002] Voltage transformer is one of the more common electrical appliances in people's lives. It is an instrument used to transform voltage. The purpose of voltage transformer to transform voltage is mainly to power measuring instruments and relay protection devices, to measure the voltage, power and electric energy of the line, or to protect the valuable equipment, motors and transformers in the line when the line fails. During the use of existing voltage transformers, the circuit may encounter different situations, such as overload, which may cause the voltage transformer to be damaged. Some voltage transformers are large in size and are not convenient to carry during circuit maintenance. Once it is found that the voltage transformer is damaged, it is necessary to transport a voltage transformer of the same model or performance for replacement, which seriously affects the use of the circuit. Therefore, there is an urgent need for a voltage transformer that is easy to replace. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a voltage transformer assembly that is easy to replace. The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0004] A voltage transformer assembly that is easy to replace, comprising a shield and a cover plate covering the upper end of the shield, wherein one side of the shield has a flange protruding outward, and the flange forms an open portion connected to the inner cavity of the shield;

[0005] A voltage transformer integrated assembly is slidably installed in the protective cover, and a plurality of independent voltage transformers are integrated on the voltage transformer integrated assembly. After the protective cover is rotated, the voltage transformer integrated assembly can switch the positions of the voltage transformers and can push any voltage transformer integrated on the voltage transformer integrated assembly out of the open part of the protective cover.

[0006] The voltage transformer integrated assembly has a substrate for carrying various voltage transformers, the voltage transformers are evenly distributed on the substrate, a center rod penetrates the center position of the substrate, and the bottom of the center rod is slidably matched with the shield.

[0007] A positioning assembly is installed on the central rod, and a lower slide groove is provided at the bottom of the shield. When the central rod slides to the left limit position or the right limit position of the lower slide groove, the positioning assembly is used to lock and position the central rod.

[0008] The positioning assembly includes four positioning pins with the axis of the center rod as the symmetrical center uniform part. Two positioning pins opposite to each other among the four positioning pins constitute a group of linkage pins. The two positioning pins on the linkage pins are connected by a reset spring. The positioning assembly also includes a locking sleeve cooperating with each positioning pin, a steel wire rope with one end fixed on the locking sleeve and passing through and extending from the center of the center rod, and a lifting rod tied to the extended end of the steel wire rope. When pulled by the lifting rod, the steel wire rope pulls the locking sleeve upward, and the locking sleeve makes the corresponding four positioning pins on the two groups of linkage pins move closer to each other to release the lock.

[0009] Each positioning pin is provided with an extending portion protruding upward and a hook portion arranged on the extending portion at an end away from the positioning pin and matched with the locking sleeve.

[0010] The locking sleeve is provided with a lower guiding inclined portion which is opened outward and the size of the opening gradually increases, and the hook portion is provided with an upper guiding inclined portion which is in contact with the lower guiding inclined portion. When the locking sleeve moves upward, the lower guiding inclined portion causes the four positioning pins to move closer to each other under the drive of their respective upper guiding inclined portions.

[0011] The positions of the two return springs on the two groups of linkage pins are staggered with each other.

[0012] The upper end of the central rod is provided with a top bracket for installing a lifting rod so as to allow the lifting rod to slide horizontally, and a fixed pulley for winding a steel wire rope to change the direction of the steel wire rope.

[0013] A handrail is mounted on the top bracket.

[0014] The cover plate is provided with an upper slide groove for sliding the voltage transformer integrated component, and a plurality of observation windows evenly distributed with the left limit position of the upper slide groove as the center of a circle are also arranged on the cover plate.

[0015] The top bracket is provided with a horizontal slide groove for the lifting rod to slide horizontally.

[0016] The central rod is provided with a tray, and the tray is fixedly connected to the base plate by screws;

[0017] The base plate is provided with a plurality of evenly distributed weight-reducing holes.

[0018] The lower slide groove is provided with positioning holes matched with the positioning pins on the positioning assembly at the left limit position and the right limit position.

[0019] The center rod is provided with a lower cavity for the positioning pin to slide, a central cavity for the wire rope to pass through, and a locking matching cavity arranged between the lower cavity and the central cavity. The locking sleeve, the extension part, and the hook part are all located in the locking matching cavity.

[0020] The beneficial effects of the present invention are as follows: the present invention creatively integrates and assembles multiple voltage transformers, and uses the voltage transformer integrated assembly to switch the positions of the voltage transformers after the protective cover is rotated, and can push out any voltage transformer integrated on the voltage transformer integrated assembly from the open part of the protective cover, thereby realizing rapid replacement of the voltage transformer, and eliminating the need for maintenance workers to transport voltage transformers of the same model or performance again, greatly improving replacement efficiency and ensuring that the circuit can quickly return to normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the main internal structure of the present invention;

[0025] Figure 4 It is a top view schematic diagram of the internal structure of the present invention;

[0026] Figure 5 for Figure 2 A local enlarged view of location I;

[0027] Figure 6 It is a schematic diagram of the structure of the positioning assembly cooperating with the center rod;

[0028] Figure 7 for Figure 6 AA section view. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention but not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present invention.

[0030] like Figure 1-Figure 7 As shown, a voltage transformer assembly that is easy to replace includes a shield 1 and a cover plate 2 covering the upper end of the shield 1. One side of the shield 1 has a flange 1b protruding outward, and the flange 1b surrounds an open part 1c connected to the inner cavity of the shield 1.

[0031] A voltage transformer integrated assembly is slidably installed in the protective cover 1, and a plurality of independent voltage transformers 4 are integrated on the voltage transformer integrated assembly. After the protective cover 1 is rotated, the voltage transformer integrated assembly switches the positions of the voltage transformers 4 and can push any voltage transformer 4 integrated on the voltage transformer integrated assembly out of the open portion 1c of the protective cover 1. The present invention creatively integrates and installs traditional single-application voltage transformers together, realizes the switching of the voltage transformers 4 by rotation, and realizes the rapid replacement of the voltage transformers 4 while having the storage function, solving the problem of low efficiency in replacing voltage transformers in existing circuit maintenance.

[0032] The present invention uses the protective cover 1 and the cover plate 2 to protect the voltage transformer integrated assembly, that is, when the voltage transformer integrated assembly is not in use, the voltage transformer integrated assembly can be pushed into the inner cavity of the protective cover 1 without being exposed to the outside, thereby achieving good protection; after the protective cover 1 is installed at a designated place, a corresponding voltage transformer 4 is pushed out from the open part 1c of the protective cover 1 according to usage needs for external use.

[0033] The voltage transformer integrated assembly has a substrate 5 carrying each voltage transformer, the voltage transformers are evenly distributed on the substrate 5, a center rod 6 is passed through the center position of the substrate 5, and the bottom of the center rod 6 is slidably matched with the shield 1. The center rod 6 drives the entire voltage transformer integrated assembly to slide on the shield 1, thereby realizing the free switching of the voltage transformers.

[0034] The center rod 6 is equipped with a positioning assembly, and the bottom of the shield 1 has a lower groove 1d. When the center rod 6 slides to the left limit position or the right limit position of the lower groove 1d, it is locked and positioned by the positioning assembly. When the center rod 6 moves to the left limit position of the lower groove 1d, that is, when the center rod 6 cannot continue to move to the left, the voltage transformer integrated assembly in this state has completely entered the shield 1 and can be used for the transportation of the entire device. At the same time, when the positioning assembly is in a non-locked state at this position, the center rod 6 can drive the entire voltage transformer integrated assembly to rotate around the axis of the center rod 6, thereby freely changing the position of each voltage transformer. When it is rotated to the specified position, it can be locked by the positioning assembly.

[0035] The positioning assembly includes four positioning pins 12 with the axis of the center rod 6 as the symmetrical center uniform part. Two positioning pins 12 opposite to each other in the four positioning pins 12 constitute a group of linkage pins. The two positioning pins 12 on the linkage pins are connected by a reset spring 14. The positioning assembly also includes a locking sleeve 13 matched with each positioning pin 12, a steel wire rope 9 with one end fixed on the locking sleeve 13 and passing through and extending from the center of the center rod 6, and a lifting rod 8 tied to the extended end of the steel wire rope 9. The positioning assembly of the present invention is cleverly designed. The steel wire rope 9 pulls the locking sleeve 13 upward through the pulling rod 8, and the locking sleeve 13 makes the corresponding four positioning pins 12 on the two groups of linkage pins close to each other to release the lock. By pulling once, the linkage of the four positioning pins 12 can be achieved to release the positioning in multiple directions.

[0036] Each positioning pin 12 is provided with an upwardly protruding extension portion 12 a and a hook portion 12 b which is arranged on the extension portion 12 a at an end away from the positioning pin 12 and cooperates with the locking sleeve 13 .

[0037] The lock sleeve 13 has a lower guide slope 13a which is opened outward and has a gradually increasing opening size, and the hook portion 12b has an upper guide slope 12c which is in contact with the lower guide slope 13a. When the lock sleeve 13 moves upward, the lower guide slope 13a causes the four positioning pins 12 to move closer to each other under the drive of their respective upper guide slopes 12c. The lock sleeve 13 of the present invention cooperates with the four upper guide slopes 12c at the same time, so that the linkage of the four positioning pins 12 can be achieved by manipulating one lock sleeve 13.

[0038] The positions of the two return springs 14 on the two groups of linkage pins are staggered to avoid interference between the two return springs 14 in space.

[0039] The upper end of the center rod 6 is provided with a top bracket 7 for installing a lifting rod 8 to allow the lifting rod 8 to slide horizontally, and a fixed pulley 10 for winding a steel wire rope 9 to change the direction of the steel wire rope 9.

[0040] An armrest 3 is mounted on the top bracket 7 to facilitate pushing and manipulation by operators.

[0041] The cover plate 2 has an upper slide groove 2b for the voltage transformer integrated component to slide. The cover plate 2 is also provided with a number of observation windows 2a evenly distributed with the left limit position of the upper slide groove 2b as the center of the circle. The advantages of providing the observation window 2a are: first, the position of each voltage transformer inside can be accurately determined, and the other is that it is convenient to judge whether each voltage transformer is good or bad, such as putting a label on the bad voltage transformer, so that it is convenient to see it directly on the observation window 2a.

[0042] The top bracket 7 is provided with a horizontal slide groove 7a for the lifting rod 8 to slide horizontally.

[0043] The central rod 6 is provided with a tray 11 , and the tray 11 is fixedly connected to the base plate 5 by screws.

[0044] The base plate 5 has a plurality of evenly distributed weight-reducing holes 5a.

[0045] The lower slide groove 1d is provided with positioning holes 1a cooperating with the positioning pins 12 on the positioning assembly at the left extreme position and the right extreme position, thereby ensuring the stability of the voltage transformer integrated assembly at the left extreme position and the right extreme position.

[0046] The center rod 6 is provided with a lower cavity 6b for the positioning pin 12 to slide, a central cavity 6a for the wire rope 9 to pass through, and a locking cavity 6c arranged between the lower cavity 6b and the central cavity 6a. The locking sleeve 13, the extension part 12a, and the hook part 12b are all located in the locking cavity 6c.

[0047] In the present invention, four voltage transformers can be stored at one time, that is, in the actual use site, the present invention can be used for the replacement of four voltage transformers, which brings convenience to the maintenance and replacement work.

[0048] When the voltage transformer needs to be replaced, just hold the handrail 3, then pull the lifting rod 8 with your fingers, and use the wire rope 9 to transmit the pulling force, so that the four positioning pins 12 are retracted into the center rod 6. At this time, the operator can push the handrail 3 by hand, so that the handrail 3 drives the center rod 6 to slide along the lower slide groove 1d and the upper slide groove 2b until it slides to the left limit position, rotate the handrail 3, and synchronously drive the center rod 6 to rotate, so that each voltage transformer rotates synchronously. After changing the position, pull the handrail 3 in the opposite direction to drive the center rod 6 to slide along the lower slide groove 1d and the upper slide groove 2b until it moves to the right limit position and then release your hand. At this time, with the help of the reset springs 14, the four positioning pins 12 are reset to insert into the corresponding positioning holes 1a to achieve positioning. At this time, the qualified voltage transformer is exposed from the open part 1c for external use.

[0049] 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. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A voltage transformer assembly that is easy to replace, comprising a shield (1) and a cover plate (2) covering the upper end of the shield (1), characterized in that: One side of the protective cover (1) has a flange (1b) protruding outward, and the flange (1b) forms an open portion (1c) communicating with the inner cavity of the protective cover (1); A voltage transformer integrated assembly is slidably mounted in the protective cover (1), and a plurality of independent voltage transformers (4) are integrated on the voltage transformer integrated assembly. After the protective cover (1) is rotated, the voltage transformer integrated assembly can switch the positions of the voltage transformers (4) and can push any voltage transformer (4) integrated on the voltage transformer integrated assembly out of the open portion (1c) of the protective cover (1); The voltage transformer integrated assembly comprises a substrate (5) for carrying the voltage transformers, the voltage transformers are evenly distributed on the substrate (5), a center rod (6) passes through the center position of the substrate (5), the bottom of the center rod (6) is slidably matched with the shield (1); a positioning assembly is installed on the center rod (6), and the bottom of the shield (1) has a downward slide groove (1d), and when the center rod (6) slides to the left limit position or the right limit position of the downward slide groove (1d), it is locked and positioned by the positioning assembly; the positioning assembly The component comprises four positioning pins (12) with the axis of the center rod (6) as a symmetrical center uniform part, two positioning pins (12) opposite to each other among the four positioning pins (12) constitute a group of linkage pins, and the two positioning pins (12) on the linkage pins are connected by a return spring (14), and the positioning assembly also comprises a locking sleeve (13) matched with each positioning pin (12), a steel wire rope (9) with one end fixed to the locking sleeve (13) and passing through and extending from the center of the center rod (6), and a lifting rod tied to the extended end of the steel wire rope (9). (8), the wire rope (9) is pulled by the lifting rod (8) to pull the lock sleeve (13) upward, and the lock sleeve (13) causes the four corresponding positioning pins (12) on the two sets of linkage pins to move closer to each other to release the lock; each positioning pin (12) is provided with an upwardly protruding extension portion (12a) and a hook portion (12b) arranged on the extension portion (12a) away from the end where the positioning pin (12) is located and cooperates with the lock sleeve (13); the lock sleeve (13) has a lower guide inclined portion (12a) that forms an outward opening and the opening size gradually increases 13a), the hook portion (12b) is provided with an upper guide slope portion (12c) that fits with the lower guide slope portion (13a), and during the upward movement of the lock sleeve (13), the lower guide slope portion (13a) causes the four positioning pins (12) to move closer to each other under the drive of their respective upper guide slope portions (12c); the cover plate (2) has an upper slide groove (2b) for sliding the voltage transformer integrated component, and the cover plate (2) is also provided with a plurality of observation windows (2a) that are evenly distributed with the left extreme position of the upper slide groove (2b) as the center of the circle.

2. The voltage transformer assembly that is easy to replace according to claim 1, characterized in that: The positions of the two return springs (14) on the two sets of linkage pins are staggered.

3. The voltage transformer assembly that is easy to replace according to claim 1, characterized in that: The upper end of the center rod (6) is provided with a top bracket (7) for mounting a lifting rod (8) so as to allow the lifting rod (8) to slide horizontally, and a fixed pulley (10) for winding a steel wire rope (9) so as to change the direction of the steel wire rope (9).

4. The voltage transformer assembly that is easy to replace according to claim 3 is characterized in that: A handrail (3) is mounted on the top bracket (7).

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