Transformer with adjustable output power

Abstract

The utility model discloses a transformer with adjustable output power. The transformer comprises a transformation seat and a self-locking rotating mechanism, the upper end of the voltage transformation seat is connected with the protective cover through quick locking mechanisms which are uniformly distributed; the self-locking rotating mechanism comprises a rotating column, sliding rods, sliding grooves, locking handles and a fixing cylinder, the rotating column is fixedly connected to the upper end of the tap switch control shaft, the sliding rods which are evenly distributed are fixedly connected to the lower end of the rotating column, the locking handles are slidably connected between every two transversely adjacent sliding rods, and the fixing cylinder is fixedly connected to the upper end of the protective cover. According to the transformer with the adjustable output power, rotation self-locking of a tap switch control shaft can be achieved without assistance of a positioning pin, meanwhile, the transformer can be separated from limitation of a screw, operation is convenient, and the transformer is convenient to use. And the protective cover and the transformer seat can be quickly mounted and dismounted.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer with adjustable output power. Background Art

[0002] The adjustable transformer adjusts the voltage or current by changing the turns ratio or magnetic flux of the transformer. The turns ratio refers to the ratio of the turns of the primary winding of the transformer to the secondary winding. According to the working principle of the transformer, the output voltage is proportional to the turns ratio, and the output current is inversely proportional to the turns ratio. Therefore, by changing the turns ratio, the output voltage or current can be adjusted. Some existing transformers with adjustable output power realize the opening and closing of the lock of the tap changer control shaft by adjusting the gear position of the positioning pin (or bolt), and then the output power of the transformer is adjusted by the tap changer. Some transformers with adjustable output power realize the connection between the protective cover and the transformer seat by screws. This type of transformer with adjustable output power has the following problems. For example, the positioning pin (or bolt) controls the opening and closing of the lock of the tap changer control shaft, and the personnel need to remove and install the positioning pin (or bolt) each time, which increases the workload of the personnel. The control shaft cannot be automatically locked, which is troublesome to use. The separation and installation of the protective cover and the transformer seat are realized by removing and installing the screws, which is a long process and troublesome to use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a transformer with adjustable output power, which can realize the self-locking rotation of the tap switch control shaft without the assistance of a positioning pin, and at the same time can break away from the restriction of the screws to realize the rapid installation and disassembly of the protective cover and the transformer seat, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transformer with adjustable output power, comprising a transformer seat and a self-locking rotating mechanism;

[0005] Transformer seat: Its upper end is connected to the protective cover through evenly distributed quick locking mechanisms;

[0006] Self-locking rotation mechanism: it includes a rotating column, a sliding rod, a sliding groove, a locking handle and a fixed cylinder, the rotating column is fixedly connected to the upper end of the tap changer control shaft, the lower end of the rotating column is fixedly connected with evenly distributed sliding rods, the locking handle is slidably connected between two laterally adjacent sliding rods, the fixed cylinder is fixedly connected to the upper end of the protective cover, the interior of the fixed cylinder is provided with a sliding groove, the interior of the sliding groove is provided with evenly distributed serrations, the end of the locking handle away from the rotating column is fixedly connected with evenly distributed saw teeth, the saw teeth are all plugged into the laterally adjacent saw tooth grooves, and the rotation self-locking of the tap changer control shaft can be achieved without the assistance of a locating pin, and at the same time, it can be free from the restriction of the screws to achieve rapid installation and disassembly of the protective cover and the transformer seat.

[0007] Furthermore, the self-locking rotation mechanism also includes a knob, a driving handle and a driving plate, the knob is fixedly connected to the upper end of the rotating column, the driving plates are fixedly connected to the end of the locking handle close to the rotating column, rib grooves are arranged inside the driving plates, the lower end of the knob is rotatably connected to the evenly distributed driving handle, the lower end of the driving handle is fixedly connected to a pillar, the outer surface of the pillar is slidably connected to the inside of the vertically adjacent rib grooves, and a spring 2 is fixedly connected between the driving plate and the rotating column to provide driving force for the opening and closing of the control shaft locking unit, and at the same time provide driving force for the rotation of the control shaft.

[0008] Furthermore, an indicator disk is fixedly connected to the upper end of the fixing cylinder, a pointer is fixedly connected to the middle of the knob, and the pointer is installed in coordination with the indicator disk to provide information prompts for output power adjustment of the transformer.

[0009] Furthermore, the quick locking mechanism includes a vertical groove, a sliding block, a locking groove and a locking column. The vertical grooves are evenly arranged at the lower end of the transformer seat, a circular groove is arranged at the upper end of the transformer seat, the lower end of the protective cover is plugged into the inside of the circular groove, the locking column is evenly fixedly connected to the lower end of the protective cover, the locking columns are all slidably connected to the vertically adjacent vertical grooves, the left ends of the vertical grooves are all provided with locking grooves, the locking columns are all slidably connected to the vertically adjacent locking grooves, the insides of the vertical grooves are all slidably connected with sliding blocks, and the locking columns are all installed in cooperation with the vertically adjacent sliding blocks to realize quick installation and disassembly of the protective cover and the transformer seat.

[0010] Furthermore, the quick locking mechanism also includes a spring 1 and a driving column, the spring 1 is fixedly connected between the sliding block and the corresponding vertical groove, the driving column is fixedly connected to the end of the sliding block away from the center of the transformer seat, the end of the vertical groove away from the center of the transformer seat is provided with an avoidance groove, and the middle part of the driving column is slidably connected to the inside of the laterally adjacent avoidance groove to provide a driving force for the opening and closing of the protective cover and the transformer seat lock.

[0011] Furthermore, the distance between the bottom surface of the vertical groove and the bottom surface of the vertically adjacent locking groove is greater than the height of the sliding block, and the height of the sliding block is greater than the height of the vertically adjacent locking grooves, which effectively ensures the stable locking of the protective cover and the transformer seat.

[0012] Furthermore, an iron core is fixedly connected to the upper end of the transformer seat, a uniformly distributed wire group is arranged inside the iron core, a tap switch is arranged at the upper end of the protective cover, a connector is arranged at the front end of the protective cover, a live wire input column is arranged in the middle of the connector, a neutral wire input column is arranged at the lower end of the connector, a live wire output column is arranged in the middle of the connector, a neutral wire output column is arranged at the lower end of the connector, the output ends of the live wire input column and the neutral wire input column are electrically connected to the input end of the wire group, and the tap switch is respectively connected in series between the input end of the live wire output column and the output end of the wire group and between the input end of the neutral wire output column and the output end of the wire group, so as to realize the connection between the transformer and the external power supply.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The personnel press the driving handle with their fingers, and the driving handle drives the vertically adjacent pillars to move in the direction close to the rotating column, and then drives the horizontally adjacent locking handles to move through the corresponding driving plates, so that the locking handles are out of contact with the inner wall of the slide groove, and the slide bar provides a guide for the movement of the locking handle. At the same time, the movement of the driving plate squeezes the horizontally adjacent spring 2, and then the knob is turned. Under the prompts of the pointer and the indicator disk, the pointer is turned to the desired position, and the fingers stop pressing the driving handle. The elastic force of the spring 2 pushes the locking handle outward through the corresponding driving plate, so that the serrations of the locking handle are plugged into the corresponding serration grooves, so as to realize the automatic locking of the tap changer control shaft, and then realize the adjustment of the transformer output power, get rid of the constraints of the positioning pins or bolts, and do not need to remove and install the positioning pins or bolts every time, which greatly saves the workload of the staff and makes the output power adjustment of the transformer more convenient.

[0015] 2. Insert the lower end of the protective cover into the inside of the circular groove. The locking columns push the vertically adjacent sliding blocks downward. The downward movement of the sliding blocks causes the vertically adjacent springs to be elastically compressed. When the locking columns correspond to the corresponding locking grooves horizontally, turn the protective cover to the left. The locking columns enter the corresponding locking grooves. At the same time, the sliding blocks lose vertical pressure. The springs push the vertically adjacent sliding blocks upward. The left end of the sliding block blocks the locking groove, thereby realizing the rapid installation of the protective cover and the transformer seat. When the protective cover needs to be disassembled When the protective cover is turned right, the locking columns enter the corresponding vertical grooves, and then the protective cover is pulled upward to realize the rapid disassembly of the protective cover and the transformer seat, free from the restriction of the screws, and realize the rapid and automatic locking of the protective cover and the transformer seat during installation under the action of the spring. At the same time, the protective cover is quickly released through the driving column, which greatly facilitates the efficiency of installation and disassembly of the protective cover and the transformer seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure inside the utility model;

[0018] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0019] Figure 4 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0020] In the figure: 1 transformer seat, 2 protective cover, 3 iron core, 4 wire group, 5 tap changer, 6 self-locking rotating mechanism, 61 rotating column, 62 knob, 63 driving handle, 64 sliding rod, 65 driving plate, 66 sliding groove, 67 locking handle, 68 fixing cylinder, 7 quick locking mechanism, 71 vertical groove, 72 spring 1, 73 sliding block, 74 locking groove, 75 locking column, 76 driving column, 8 indicator plate, 9 pointer, 10 connector, 11 live wire input column, 12 neutral wire input column, 13 live wire output column, 14 neutral wire output column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , This embodiment provides a technical solution: a transformer with adjustable output power, comprising a transformer seat 1 and a self-locking rotation mechanism 6;

[0023] Transformer seat 1: its upper end is connected to the protective cover 2 through a uniformly distributed quick locking mechanism 7, the upper end of the transformer seat 1 is fixedly connected with an iron core 3, the interior of the iron core 3 is provided with a uniformly distributed line group 4, the upper end of the protective cover 2 is provided with a tap switch 5, the front end of the protective cover 2 is provided with a connector 10, the middle of the connector 10 is provided with a live input column 11, the lower end of the connector 10 is provided with a neutral input column 12, the middle of the connector 10 is provided with a live output column 13, the lower end of the connector 10 is provided with a neutral output column 14, the output ends of the live input column 11 and the neutral input column 12 are both electrically connected to the input end of the line group 4, and the tap switch 5 is respectively connected in series between the input end of the live output column 13 and the output end of the line group 4 and between the input end of the neutral output column 14 and the output end of the line group 4;

[0024] The self-locking rotation mechanism 6 includes a rotating column 61, a sliding rod 64, a sliding groove 66, a locking handle 67 and a fixed cylinder 68. The rotating column 61 is fixedly connected to the upper end of the control shaft of the tap changer 5. The lower end of the rotating column 61 is fixedly connected to the sliding rods 64 that are evenly distributed. The locking handle 67 is slidably connected between two laterally adjacent sliding rods 64. The fixed cylinder 68 is fixedly connected to the upper end of the protective cover 2. The interior of the fixed cylinder 68 is provided with a sliding groove 66. The interior of the sliding groove 66 is provided with evenly distributed sawtooth grooves. The end of the locking handle 67 away from the rotating column 61 is fixedly connected with evenly distributed sawteeth, and the sawteeth are all laterally aligned with the sawtooth grooves. Adjacent sawtooth grooves are plugged in, and the self-locking rotation mechanism 6 also includes a knob 62, a driving handle 63 and a driving plate 65. The knob 62 is fixedly connected to the upper end of the rotating column 61, and the driving plate 65 is fixedly connected to the end of the locking handle 67 close to the rotating column 61. Rib grooves are arranged inside the driving plate 65. The lower end of the knob 62 is rotatably connected to the evenly distributed driving handle 63. The lower end of the driving handle 63 is fixedly connected to a pillar, and the outer surface of the pillar is slidably connected to the inside of the vertically adjacent rib groove. A spring 2 is fixedly connected between the driving plate 65 and the rotating column 61, and the upper end of the fixed cylinder 68 is fixedly connected to the indicator plate 8 The middle part of the knob 62 is fixedly connected with a pointer 9, which is installed in conjunction with the indicator plate 8. According to the required output power, the finger presses the driving handle 63, and the driving handle 63 drives the vertically adjacent pillars to move in the direction close to the rotating column 61. The pillars pull the horizontally adjacent driving plates 65 inside the corresponding rib grooves, and the corresponding driving plates 65 drive the horizontally adjacent locking handles 67 to move, so that the locking handles 67 are out of contact with the inner wall of the slide groove 66. The slide bar 64 provides a guide for the movement of the locking handle 67. At the same time, the movement of the driving plate 65 squeezes the horizontally adjacent spring 2, and then the knob 62 is turned. , under the prompt of the pointer 9 and the indicator plate 8, the pointer 9 is rotated to the desired position, and the finger stops pressing the driving handle 63. The elastic force of the second spring pushes the locking handle 67 outward through the corresponding driving plate 65, so that the saw teeth of the locking handle 67 are plugged into the corresponding sawtooth grooves inside the circular groove 66, so that the control shaft of the tap switch 5 is automatically locked. The knob 62 rotates through the rotating column 61 to realize the rotation of the control shaft of the tap switch 5, so that the tap selector of the tap switch 5 controls the corresponding tap point to be connected with the corresponding point of the line group 4, so as to adjust the line group turns ratio, and then adjust the output power of the transformer;

[0025] Wherein: the quick locking mechanism 7 includes a vertical groove 71, a sliding block 73, a locking groove 74 and a locking column 75. The vertical groove 71 is evenly arranged at the lower end of the transformer seat 1. The upper end of the transformer seat 1 is provided with a circular groove. The lower end of the protective cover 2 is plugged into the inside of the circular groove. The locking column 75 is evenly fixedly connected to the lower end of the protective cover 2. The locking column 75 is slidably connected to the vertically adjacent vertical groove 71. The left end of the vertical groove 71 is provided with a locking groove 74. The locking column 75 is slidably connected to the vertically adjacent locking groove 74. The inside of the vertical groove 71 is slidably connected. The bottom surface of the vertical groove 71 and the bottom surface of the vertically adjacent locking groove 74 are greater than the height of the sliding block 73. The height of the sliding block 73 is greater than the height of the vertically adjacent locking groove 74. The locking column 75 is installed in cooperation with the vertically adjacent sliding block 73. The quick locking mechanism 7 also includes a spring 72 and a drive column 76. The spring 72 is fixedly connected between the sliding block 73 and the corresponding vertical groove 71. The drive column 76 is fixedly connected to one end of the sliding block 73 away from the center of the transformer seat 1. The vertical groove 71 is away from the center of the transformer seat 1. The middle part of the driving column 76 is slidably connected with the inner part of the horizontally adjacent avoiding groove, the lower end of the protective cover 2 is inserted into the inner part of the circular groove, the locking column 75 pushes the vertically adjacent sliding block 73 to move downward in the corresponding vertical groove 71, and the downward movement of the sliding block 73 causes the vertically adjacent spring 72 to be elastically compressed. When the locking column 75 corresponds to the corresponding locking groove 74 horizontally, the protective cover 2 is rotated to the left, the locking column 75 enters the inner part of the corresponding locking groove 74, and the sliding block 73 loses the vertical pressure. The locking ribs 75 are pressed against the locking ribs 76 to release from the locking ribs 78, and the locking ribs 77 are released when the locking ribs 78 are in place.

[0026] The working principle of a transformer with adjustable output power provided by the utility model is as follows: when working, the personnel first place the transformer seat 1 in the horizontal working area, and then the personnel insert the lower end of the protective cover 2 into the inside of the circular groove, and the locking columns 75 push the vertically adjacent sliding blocks 73 to move downward in the corresponding vertical grooves 71, and the downward movement of the sliding blocks 73 causes the vertically adjacent springs 1 72 to be elastically compressed. When the locking columns 75 correspond to the corresponding locking grooves 74 horizontally, the protective cover 2 is rotated to the left, and the locking columns 75 enter the corresponding locking grooves 74. At the same time, the sliding blocks 73 lose the vertical pressure, and the springs 1 72 push When the locking nut 75 is in place, the locking nut 77 is engaged and the latch is engaged to the bolt. The driving handle 63 is pressed, and the driving handle 63 drives the vertically adjacent pillars to move in the direction close to the rotating column 61. The pillars pull the horizontally adjacent driving plates 65 inside the corresponding rib grooves, and the corresponding driving plates 65 drive the horizontally adjacent locking handles 67 to move, so that the locking handles 67 are out of contact with the inner wall of the slide groove 66. The slide bar 64 provides a guide for the movement of the locking handle 67. At the same time, the movement of the driving plate 65 squeezes the horizontally adjacent spring 2, and then the knob 62 is turned. Under the prompts of the pointer 9 and the indicator disk 8, the pointer 9 is turned to the desired position, and the finger stops pressing the driving handle 63. The elastic force of the spring 2 pushes the locking handle 67 through the sliding groove 66. The corresponding driving plate 65 pushes the locking handle 67 to move outward, so that the serrations of the locking handle 67 are all plugged into the corresponding serrations inside the circular groove 66, thereby realizing the automatic locking of the control shaft of the tap switch 5. The knob 62 rotates through the rotating column 61 to realize the rotation of the control shaft of the tap switch 5, so that the tap selector of the tap switch 5 controls the corresponding tap point to be connected with the corresponding point of the line group 4, thereby realizing the adjustment of the line group turns ratio, and then realizing the adjustment of the transformer output power. Then the personnel connect the external power line to the live wire input column 11, the neutral wire input column 12, the live wire output column 13 and the neutral wire output column 14 in sequence, thereby realizing the voltage transformation work.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A transformer with adjustable output power, characterized in that: It comprises a transformer seat (1) and a self-locking rotating mechanism (6); Transformer seat (1): the upper end of which is connected to the protective cover (2) via evenly distributed quick locking mechanisms (7); The self-locking rotation mechanism (6) comprises a rotating column (61), a sliding rod (64), a sliding groove (66), a locking handle (67) and a fixed cylinder (68), wherein the rotating column (61) is fixedly connected to the upper end of the control shaft of the tap changer (5), the lower end of the rotating column (61) is fixedly connected to the sliding rods (64) which are evenly distributed, the locking handles (67) are slidably connected between two laterally adjacent sliding rods (64), the fixed cylinder (68) is fixedly connected to the upper end of the protective cover (2), the interior of the fixed cylinder (68) is provided with a sliding groove (66), the interior of the sliding groove (66) is provided with evenly distributed sawtooth grooves, and the end of the locking handle (67) away from the rotating column (61) is fixedly connected to evenly distributed sawtooths, and the sawtooths are plugged into the laterally adjacent sawtooth grooves.

2. The transformer with adjustable output power according to claim 1, characterized in that: The self-locking rotation mechanism (6) further comprises a knob (62), a driving handle (63) and a driving plate (65); the knob (62) is fixedly connected to the upper end of the rotating column (61); the driving plates (65) are fixedly connected to one end of the locking handle (67) close to the rotating column (61); rib grooves are arranged inside the driving plates (65); the lower end of the knob (62) is rotatably connected to the driving handles (63) which are evenly distributed; the lower ends of the driving handles (63) are fixedly connected to pillars; the outer surfaces of the pillars are slidably connected to the inside of the vertically adjacent rib grooves; and spring 2 is fixedly connected between the driving plate (65) and the rotating column (61).

3. The transformer with adjustable output power according to claim 2, characterized in that: The upper end of the fixed cylinder (68) is fixedly connected to an indicator disk (8), the middle of the knob (62) is fixedly connected to a pointer (9), and the pointer (9) is installed in coordination with the indicator disk (8).

4. The transformer with adjustable output power according to claim 1, characterized in that: The quick locking mechanism (7) comprises a vertical groove (71), a sliding block (73), a locking groove (74) and a locking column (75); the vertical groove (71) is evenly arranged at the lower end of the transformer seat (1); a circular groove is arranged at the upper end of the transformer seat (1); the lower end of the protective cover (2) is plugged into the inside of the circular groove; the locking column (75) is evenly fixedly connected to the lower end of the protective cover (2); the locking column (75) is slidably connected to the vertically adjacent vertical grooves (71); the left end of the vertical grooves (71) is provided with a locking groove (74); the locking column (75) is slidably connected to the vertically adjacent locking grooves (74); the inside of the vertical grooves (71) is slidably connected with a sliding block (73); the locking column (75) is mounted in cooperation with the vertically adjacent sliding block (73).

5. The transformer with adjustable output power according to claim 4, characterized in that: The quick locking mechanism (7) also includes a spring 1 (72) and a driving column (76), wherein the spring 1 (72) is fixedly connected between the sliding block (73) and the corresponding vertical groove (71), and the driving column (76) is fixedly connected to one end of the sliding block (73) away from the center of the transformer seat (1), and an escape groove is provided at one end of the vertical groove (71) away from the center of the transformer seat (1), and the middle part of the driving column (76) is slidably connected to the inside of the laterally adjacent escape groove.

6. The transformer with adjustable output power according to claim 4, characterized in that: The distance between the bottom surface of the vertical groove (71) and the bottom surface of the vertically adjacent locking groove (74) is greater than the height of the sliding block (73), and the height of the sliding block (73) is greater than the height of the vertically adjacent locking groove (74).

7. The transformer with adjustable output power according to claim 1, characterized in that: The upper end of the transformer seat (1) is fixedly connected to an iron core (3), and a uniformly distributed line group (4) is arranged inside the iron core (3). A tap switch (5) is arranged at the upper end of the protective cover (2), and a connector (10) is arranged at the front end of the protective cover (2). A live wire input column (11) is arranged in the middle of the connector (10), a neutral wire input column (12) is arranged at the lower end of the connector (10), a live wire output column (13) is arranged in the middle of the connector (10), and a neutral wire output column (14) is arranged at the lower end of the connector (10). The output ends of the live wire input column (11) and the neutral wire input column (12) are both electrically connected to the input end of the line group (4), and the tap switch (5) is respectively connected in series between the input end of the live wire output column (13) and the output end of the line group (4), and between the input end of the neutral wire output column (14) and the output end of the line group (4).

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