Energy storage mechanism and on-load tap-changer

Abstract

The utility model provides an energy storage mechanism and an on-load tap-changer, and relates to the technical field of on-load tap-changer energy storage mechanisms, the energy storage mechanism comprises a back plate, two buffers and a switching shaft, a clamping block is rotatably installed at the bottom edge position of one side of the back plate where the buffers are installed, a rotating frame is inserted on the clamping block, the rotating frame is driven to rotate by arranging the clamping block, and the switching shaft is connected with the two buffers. The sliding frame inserted into the columnar part at one end of the rotating frame can reciprocate under the limiting effect of the back plate, then the connecting arm drives the gear to reciprocate, the gear meshed with the rack swings in a reciprocating mode, the switching shaft of the extension section of the gear swings in a reciprocating mode, and the switching shaft makes contact with the two buffers. According to the scheme, the switching shaft can be in alternate contact with the two buffers only by driving the motor to rotate in one direction, and the control procedure is simplified conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to a load tap changer energy storage mechanism technical field especially relates to a kind of energy storage mechanism and load tap changer. BACKGROUND

[0002] The energy storage mechanism in load tap changer is key component, it can store and release energy, by cooperating with driving mechanism, driving switching mechanism rotates.This design reduces the movement transformation process, improves transmission efficiency.The design of energy storage mechanism makes load tap changer more efficient in operation process, can ensure the accurate and fast action of switching mechanism.

[0003] After searching:

[0004] A load tap changer compression spring energy storage mechanism, the publication number CN217719357U, when needing to shift, driving mechanism drives gear counterclockwise rotation, push rod pushes swing lever to rotate to left side around main pin axle, while connecting rod is driven under the driving of sliding pin axle and does clockwise rotation, compression spring assembly is pushed under the driving of connecting rod and does clockwise rotation around second rotation pin axle, compression spring assembly in the rotation process, telescopic column shortens, compression spring compresses energy storage;When reaching limit position, the first connecting plate of compression spring assembly rotates to be close to right side buffer;Next moment, gear continues counterclockwise rotation, drives push rod, swing lever, connecting rod and compression spring assembly to continue action, at this moment, connecting rod swings over dead point moment, compression spring releases instantaneously, sector plate drives switching shaft to rotate to left side buffer to left, gear continues counterclockwise rotation, and connecting rod mechanism resets to original position.

[0005] That is, the prior art needs gear to rotate clockwise and then counterclockwise when in use, and the rotation mode is switched between clockwise and counterclockwise, which is necessary in some application scenarios, but it also brings certain operation complexity, because, every time the rotation direction is changed, the system needs to be accurately controlled and adjusted, which not only increases the difficulty of operation, but also improves the requirements for system stability and reliability. UTILITARIAN CONTENT

[0006] The utility model aims at solving the problems in prior art and proposes a kind of energy storage mechanism and load tap changer.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of energy storage mechanism and on-load tap-changer, including backplate, two buffers and switching shaft, the one side bottom edge position of the backplate installation buffer rotates and is installed with clamping block, rotating frame is inserted on the clamping block, the one end of the rotating frame is outward and columnar protrusion, and protrusion is equipped with sliding frame inserted on the surface of backplate, the sliding frame moves relative to and buffer, and connecting arm is inserted on the one side of sliding frame, the one side of the connecting arm is installed with rack and the one side of the backplate is rotatably connected with gear engaged with rack, the one end edge of the gear away from backplate extends outward and is used to install switching shaft, and the extending end of the gear is rotatably connected with spring rod between the position of the one side of backplate located directly below gear.

[0008] Preferably, the two buffers are installed on the swing path of the switching shaft and symmetrically arranged about the gear.

[0009] Preferably, a sliding slot is formed on the one side of the backplate at the position of the clamping block, and a motor is installed on the other side of the backplate at the position of the sliding slot, a reciprocating screw rod is rotatably connected to the other side of the backplate and penetrates the motor housing, the motor spindle is slidably connected with the inner wall of the sliding slot and extends to be fixed with the clamping block.

[0010] Preferably, the one side of the rotating frame is provided with sawteeth, and the clamping block is threaded through with a fastening bolt towards the sawteeth side of the rotating frame, and a friction plate is rotatably connected to the end face of the fastening bolt on the clamping block.

[0011] Preferably, the rack tooth back is inserted into the connecting arm, and an anti-skid frame is fixedly connected to the one side of the rack, which is arranged in parallel with the side surface of the connecting arm, the one side of the connecting arm is also threaded with a fastening bolt, and the fastening bolt on the connecting arm penetrates the inner wall of the anti-skid frame and the screw rod part is sleeved with a pressing block in contact with the surface of the anti-skid frame.

[0012] Preferably, a guide rail is fixedly connected to the one end of the connecting arm and inserted into the connecting arm, and the surface of the guide rail and the bottom end of the connecting arm are connected by a bolt.

[0013] Preferably, the part of the clamping block in the rotating frame is provided with a plate.

[0014] Compared with the prior art, the utility model has the advantages and positive effects that,

[0015] 1. The utility model discloses a rotatable frame is rotated through the setting card piece, can realize and the sliding frame of one end cylindrical part insertion of rotatable frame is under the limiting effect of backplate reciprocating motion, further realizes the reciprocating motion of connecting arm drive gear, can realize the reciprocating swing of gear meshing connection gear, can realize the reciprocating swing of its extension section switching shaft, realizes with two buffer contact, this scheme only needs to drive motor rotation in one direction to realize switching shaft and two buffer alternate contact, it is convenient to simplify the operation process, reduced operation difficulty.

[0016] 2. The utility model discloses a chute, the position of card piece on rotatable frame is adjusted through the chute, and the rotating radius of one end of rotatable frame is adjusted, and the reciprocating motion distance of sliding frame, connecting arm and rack is further adjusted, the reciprocating swing amplitude of gear can be adjusted, and it is convenient to adjust according to the installation distance of two buffers. DRAWINGS

[0017] Figure 1 A three-dimensional structure schematic diagram of the energy storage mechanism and the on-load tap-changer is provided for the utility model;

[0018] Figure 2 A sectional structure schematic diagram of the energy storage mechanism and the on-load tap-changer is provided for the utility model; Figure 1

[0019] Figure 3 A rear view structure schematic diagram of the energy storage mechanism and the on-load tap-changer is provided for the utility model; Figure 1

[0020] Figure 4 A structure schematic diagram of the fastening bolt on the anti-skid frame is provided for the utility model;

[0021] Figure 5 A structure schematic diagram of the fastening bolt on the guide rail is provided for the utility model.

[0022] Legend: 1, backplate; 2, buffer; 3, gear; 4, rack; 5, connecting arm; 6, guide rail; 7, rotatable frame; 8, card piece; 9, fastening bolt; 10, spring rod; 11, switching shaft; 12, anti-skid frame; 13, friction plate; 14, sliding frame; 15, chute; 16, motor; 17, reciprocating screw rod; 18, pressing block. DETAILED DESCRIPTION

[0023] In order to enable the above-mentioned purpose, features and advantages of the utility model to be more clearly understood, the utility model will be further described below in conjunction with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] ​​In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] like Figures 1-5 As shown, an energy storage mechanism and an on-load tap changer include a back plate 1, two buffers 2 and a switching shaft 11. The two buffers 2 are installed on the swing path of the switching shaft 11 and are symmetrically arranged about the gear 3. The switching shaft 11 swings back and forth to achieve alternating contact between the switching shaft 11 and the two buffers 2, that is, to achieve alternating control. A clamping block 8 is rotatably installed at the bottom edge of one side of the back plate 1 where the buffers 2 are installed. A rotating frame 7 is inserted into the clamping block 8. The portion of the clamping block 8 located within the rotating frame 7 is in a plate-shaped configuration. The clamping block 8 is forced to rotate to rotate the rotating frame 7. With the block 8 as the center of the circle, the rotating frame 7 is rotated, and one end of the rotating frame 7 extends outwardly into a cylindrical protrusion and a sliding frame 14 is sleeved on the protrusion and plugged into the surface of the back plate 1. The sliding frame 14 moves relative to the two buffers 2 and a connecting arm 5 is plugged into one side of the sliding frame 14. By limiting the sliding direction of the sliding frame 14, and then using the cylindrical part of the surface of the rotating frame 7 to insert into the sliding frame 14, the cylindrical part of the end face of the rotating frame 7 can be rotated when the rotating frame 7 is rotated, driving the sliding frame 14 to move back and forth, that is, the circular motion of the rotating frame 7 is converted into a linear reciprocating motion of the sliding frame 14, and the sliding frame 14 is moved back and forth. The connecting arm 5 moves synchronously by moving the sliding frame 14. A guide rail 6 is fixedly connected to the sliding frame 14 and is plugged into one end of the connecting arm 5. The surface of the guide rail 6 is connected to the bottom end of the connecting arm 5 by a bolt. By rotating and removing the bolt, the connecting arm 5 can slide on the guide rail 6 to adjust the position of the connecting arm 5. A rack 4 is installed on one side of the connecting arm 5 and a gear 3 meshing with the rack 4 is rotatably connected to one side of the back plate 1. When the connecting arm 5 moves synchronously with the reciprocating movement of the sliding frame 14, it drives the meshing gear 3 to rotate clockwise by a certain angle. After that, rotate counterclockwise by the same angle, and the rack 4 provided is plugged into the connecting arm 5. Therefore, it is convenient to adjust the position of the connecting arm 5 by removing the bolts, so that the rack 4 is disengaged from the gear 3, and it is convenient to slide and pull out the rack 4 to realize the disassembly and assembly of the rack 4. The edge of the end of the gear 3 facing away from the back plate 1 extends outward and is used to install the switching shaft 11. The spring rod 10 is rotatably connected between the extended end of the gear 3 and the position on the side of the back plate 1 directly below the gear 3. The reciprocating swing of the gear 3 realizes the switching shaft 11 at its extended end to move alternately between the two buffers 2, such as Figure 1As shown, when the extended end of the gear 3 rotates to the right to a vertical state, this point is marked as the dead point position of the spring rod 10. The spring rod 10 at one end of the switching shaft 11 will elastically stretch. After applying a certain force to the gear 3, after passing this point, the spring rod 10 will elastically contract so that the extended end of the gear 3 continues to swing to the right under the action of external force. The force exerted by the elastic contraction of the spring rod 10 is used to further push the extended end of the gear 3 to swing to the right until it contacts the buffer 2 on the right. Similarly, when the extended end of the gear 3 swings to the left, the elastic contraction of the spring rod 10 can also apply additional force to the switching shaft 11 that passes the dead point position, thereby realizing the connection between the switching shaft 11 and the buffer 2 on the left.

[0026] Furthermore: a slide groove 15 is provided on one side of the back plate 1 at the position of the block 8 and a motor 16 is installed on the other side of the back plate 1 at the position of the slide groove 15. The other side of the back plate 1 is rotatably connected to a reciprocating screw 17 with a thread passing through the housing of the motor 16. The main shaft of the motor 16 is slidably connected to the inner wall of the slide groove 15 and extends to be fixed to the block 8. One side of the rotating frame 7 is serrated and the block 8 is threaded with a fastening bolt 9 facing the serrated side of the rotating frame 7. The end face of the fastening bolt 9 on the block 8 is rotatably connected to the friction plate 13. The motor 16 drives the block 8 to rotate, so that the rotating frame 7 is forced to rotate. In addition, the motor 16 is realized by rotating the reciprocating screw 17. The position of the block 8 on the rotating frame 7 can be adjusted by driving the block 8 to slide along the length of the slide groove 15, and then the fastening bolt 9 on the block 8 is rotated to realize that the friction plate 13 on the end face is tightly against the serrated part of the side of the rotating frame 7, so that the position adjustment of the block 8 and the rotating frame 7 can be achieved. By adjusting the position of the block 8 on the rotating frame 7, that is, adjusting the distance between the switching shaft 11 and the block 8, that is, adjusting the rotation radius of the switching shaft 11, the reciprocating distance of the sliding frame 14 can be adjusted, and then the moving path length of the connecting arm 5 and the rack 4 can be adjusted, and the swing amplitude of the gear 3 can be adjusted, which is convenient for adjustment according to the installation spacing of the two buffers 2.

[0027] Furthermore: the back of the teeth of the rack 4 is inserted into the connecting arm 5 and one side of the rack 4 is fixedly connected to an anti-slip frame 12 arranged parallel to the side of the connecting arm 5. A fastening bolt 9 is also threadedly connected to one side of the connecting arm 5. The fastening bolt 9 on the connecting arm 5 passes through the inner wall of the anti-slip frame 12 and the screw part is provided with a pressure block 18 in contact with the surface of the anti-slip frame 12. By rotating the fastening bolt 9 on the connecting arm 5, the pressure block 18 on its surface is tightly attached to the surface of the anti-slip frame 12. Under the action of friction, the relative position of the anti-slip frame 12 and the connecting arm 5 are fixed, thereby ensuring that the relative position of the rack 4 and the connecting arm 5 is fixed, that is, ensuring that the rack 4 moves with the movement of the connecting arm 5.

[0028] In addition, the card block 8 of the scheme is distributed in a staggered manner between the sliding frame 14 and the anti-skid frame 12, and the extension end of the gear 3

[0029] Working principle: during assembly, according to the installation spacing of the two buffers 2, the position of the motor 16 and the card block 8 is adjusted by rotating the reciprocating wire rod 17, the reciprocating movement distance of the sliding frame 14 is adjusted, the reciprocating swing amplitude of the switching shaft 11 of the gear 3 is adjusted under the connection effect of the connecting arm 5 and the rack 4, and during actual operation, as shown in the figure, the motor 16 drives the card block 8 to rotate the columnar part at the end of the rotating frame 7, the columnar part drives the sliding frame 14 to move downward, and then the connecting arm 5 drives the rack 4 to move downward, the meshing gear 3 drives the switching shaft 11 at the extension end to swing to the right, before passing through the dead point position, the spring rod 10 is elastically lengthened along with the swing of the gear 3, after passing through the dead point position, the spring rod 10 is elastically contracted, further pushing the switching shaft 11 at the extension end of the gear 3 to swing to contact the right buffer 2, and after the rotating frame 7 rotates half a circle, the switching shaft 11 just contacts the right buffer 2, and along with the continuous rotation of the gear 3 rotating frame 7, the sliding frame 14 drives the connecting arm 5 and the rack 4 to move upward, that is, the gear 3 reversely swings to make the switching shaft 11 contact the left buffer 2. Figure 1

[0030] The wiring diagram of the motor 16, the buffer 2 and the switching shaft 11 in the utility model belongs to the common knowledge in the field, the working principle is a known technology, and the type is selected according to actual use, so the control mode and wiring arrangement of the motor 16, the buffer 2 and the switching shaft 11 are not explained in detail.

[0031] The above is only a preferred embodiment of the utility model, and does not limit other forms of the utility model, any skilled person in the art can change or modify the above disclosed technology content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model still belong to the protection range of the utility model technical scheme.​

Claims

1. An energy storage mechanism and an on-load tap changer, comprising a back plate (1), two buffers (2) and a switching shaft (11), characterized in that: A clamping block (8) is rotatably mounted on the bottom edge of one side of the back plate (1) on which the buffer (2) is mounted, and a rotating frame (7) is plugged into the clamping block (8); One end of the rotating frame (7) extends outwards to form a columnar protrusion, and a sliding frame (14) is sleeved on the protrusion and plugged into the surface of the back plate (1); The sliding frame (14) moves relative to the two buffers (2) and a connecting arm (5) is plugged into one side of the sliding frame (14), a rack (4) is installed on one side of the connecting arm (5), and a gear (3) meshing with the rack (4) is rotatably connected to one side of the back plate (1); The edge of one end of the gear (3) facing away from the back plate (1) extends outward and is used to install the switching shaft (11), and a spring rod (10) is rotatably connected between the extended end of the gear (3) and a position on one side of the back plate (1) directly below the gear (3).

2. The energy storage mechanism and on-load tap changer according to claim 1, characterized in that: The two buffers (2) are installed on the swing path of the switching shaft (11) and the two buffers (2) are symmetrically arranged with respect to the gear (3).

3. The energy storage mechanism and on-load tap changer according to claim 1, characterized in that: A slide groove (15) is provided on one side of the back plate (1) at the position of the block (8), and a motor (16) is installed on the other side of the back plate (1) at the position of the slide groove (15). A reciprocating screw rod (17) with a thread penetrating the housing of the motor (16) is rotatably connected to the other side of the back plate (1), and the main shaft of the motor (16) is slidably connected to the inner wall of the slide groove (15) and extends to be fixed to the block (8).

4. The energy storage mechanism and on-load tap changer according to claim 3, characterized in that: One side of the rotating frame (7) is serrated, and a fastening bolt (9) is threadedly passed through the clamping block (8) on the serrated side of the rotating frame (7). The end face of the fastening bolt (9) on the clamping block (8) is rotatably connected to a friction plate (13).

5. The energy storage mechanism and on-load tap changer according to claim 1, characterized in that: The tooth back of the rack (4) is inserted into the connecting arm (5) and one side of the rack (4) is fixedly connected to an anti-slip frame (12) arranged parallel to the side of the connecting arm (5). One side of the connecting arm (5) is also threadedly connected to a fastening bolt (9). The fastening bolt (9) on the connecting arm (5) passes through the inner wall of the anti-slip frame (12) and the screw portion is provided with a pressure block (18) in contact with the surface of the anti-slip frame (12).

6. The energy storage mechanism and on-load tap changer according to claim 1, characterized in that: The sliding frame (14) is fixedly connected to a guide rail (6) plugged into one end of the connecting arm (5), and the surface of the guide rail (6) and the bottom end of the connecting arm (5) are connected by bolts.

7. The energy storage mechanism and on-load tap changer according to claim 1, characterized in that: The portion of the clamping block (8) located inside the rotating frame (7) is in a plate-like configuration.

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