Capacity and voltage regulating device for on-load tap-changer

Abstract

The utility model discloses an on-load tap-changer capacity regulating and voltage regulating device which comprises a regulating device, a first ball screw is installed inside the regulating device, one end of the first ball screw penetrates to the outside of one end of the regulating device, and a transmission structure is connected between the first ball screw and the regulating device. The transmission structure comprises a transmission box, a servo motor, a fixed block, a second ball screw, a guide rod, a movable block, a laser range finder, a ball nut, a lantern ring, a first worm gear, a second worm gear, a rotating shaft, a first worm and a second worm. According to the on-load tap-changer capacity regulating and voltage regulating device, the first worm and the first worm gear drive the first ball screw to rotate, the transmission stability is improved, the transmission structure operates to drive the first ball screw and the second ball screw to rotate synchronously, and the on-load tap-changer capacity regulating and voltage regulating device is convenient to operate. The laser range finder can synchronously move along with a contact head in the adjusting device, and displacement variables can be monitored conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of on-load tap changer, concretely to a on-load tap changer capacity regulating and voltage regulating device. BACKGROUND

[0002] With the rapid development of social economy, on-load tap changer is to change the turns ratio of primary and secondary of transformer by changing different taps of transformer winding under the condition of uninterrupted load current, so as to realize the purpose of voltage regulation, on-load tap changer is divided into rotary drum type and linear type gear structure according to the movement mode of gear selection mechanism, and on-load voltage regulating tap changer has been widely applied to voltage regulating transformer.

[0003] In the prior art, a on-load tap changer capacity regulating and voltage regulating device is disclosed in a Chinese patent document with the authorization announcement number CN212783131U, the patent sets a motor at one end of the transmission screw rod, turns on the power supply, starts the motor, so that the motor drives the transmission screw rod to rotate, the transmission screw rod is connected with the connecting insulating sleeve through thread connection, and then the connecting insulating sleeve can drive the contact seat to move outside the transmission screw rod, the bottom end of the limiting slide plate penetrates the adjusting installation shell, so that the horizontal movement of the contact seat can be maintained through the limiting slide plate, and deviation does not occur, a scale line is arranged on the lower end face of the adjusting installation shell, the displacement amount of the contact seat can be displayed through the position of the indicating block relative to the scale line, the contact head is in contact with the contact metal sheet in the movement process of the contact seat, and the number of contacts can realize the voltage regulation and capacity regulation operation.

[0004] However, the following disadvantages exist when it is used:

[0005] 1. The end of the transmission screw rod is directly connected with the motor, and the motor directly drives the screw bolt, which is not stable enough;

[0006] 2. The scale line is arranged on the lower end face of the adjusting installation shell, and the displacement amount of the contact seat can be displayed through the position of the indicating block relative to the scale line, but there is a large error in the displacement variable observed by the naked eye.

[0007] Therefore, we propose a on-load tap changer capacity regulating and voltage regulating device. UTILITY MODEL CONTENTS

[0008] (I) Technical problem solved

[0009] In view of the defects of the prior art, the utility model provides a on-load tap changer capacity regulating and voltage regulating device, which improves the stability of adjustment and has the advantages of monitoring displacement variables through a laser range finder, and can effectively solve the problems in the background art.

[0010] (II) Technical scheme

[0011] To achieve the above object, the technical scheme adopted by the utility model is: a load tap changer capacity regulating and voltage regulating device, including adjusting device, the inside of adjusting device is installed with first ball screw, and one end of first ball screw is penetrated to the outside of one end of adjusting device, transmission structure is connected between first ball screw and adjusting device, the transmission structure includes transmission case, servo motor, fixed block, second ball screw, guide rod, moving block, laser range finder, ball nut, sleeve ring, first worm wheel, second worm wheel, rotating shaft, first worm and second worm, and one end of the outer surface of one side of transmission case is fixedly connected with one end of the outer surface of adjusting device, and one end of first ball screw is inserted into one end of the inner cavity of transmission case.

[0012] Preferably, one end of the second ball screw is inserted into the other end of the inner cavity of the transmission case, the fixed block is fixedly installed on one end of the outer surface of the adjusting device away from the transmission case, the guide rod is fixedly installed between one side of the outer surface of the fixed block and one side of the outer surface of the transmission case, and the second ball screw is located on one side of the fixed block.

[0013] Preferably, the ball nut is fixedly installed on one end of the outer surface of the moving block, the sleeve ring is fixedly installed on the other end of the outer surface of the moving block, the laser range finder is fixedly installed on the middle of the outer surface of the upper end of the moving block, the second ball screw penetrates the ball nut, and the guide rod penetrates the sleeve ring.

[0014] Preferably, the servo motor is fixedly installed on the lower part of one end of the outer surface of the transmission case, the rotating shaft is connected to one end of the outer surface of the servo motor, the second worm is fixedly installed on the outer wall of one end of the rotating shaft, the first worm is fixedly installed on the outer wall of the other end of the rotating shaft, the second worm wheel is fixedly installed on the outer wall of one end of the second ball screw, the first worm wheel is fixedly installed on the outer wall of one end of the first ball screw, the second worm wheel is located on the upper end of the outer surface of the second worm, and the first worm wheel is located on the upper end of the outer surface of the first worm.

[0015] Preferably, the ball nut and the outer wall of the second ball screw are in threaded connection, the sleeve ring and the outer wall of the guide rod are in sliding connection, bearings are arranged between the second ball screw and the fixed block and the transmission case, the second ball screw is rotatably connected to the fixed block and the transmission case through the bearings, a bearing is arranged between the first ball screw and the transmission case, and the first ball screw is rotatably connected to the transmission case through the bearing.

[0016] Preferably, the upper end outer surface of the second worm is engaged with the lower end outer surface of the second worm, the upper end outer surface of the first worm is engaged with the lower end outer surface of the first worm, a bearing is arranged between the rotating shaft and the transmission box, the rotating shaft is rotatably connected with the transmission box through the bearing, a shaft coupling is arranged between the rotating shaft and the servo motor, and an outer surface of one end of the rotating shaft is fixedly connected with an outer surface of one end of an output shaft of the servo motor through the shaft coupling.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the load-tap-changing switch capacity and voltage regulating device has the following beneficial effects:

[0019] 1. The load-tap-changing switch capacity and voltage regulating device drives the first ball screw to rotate through the first worm and the first worm gear, thereby improving the stability of transmission.

[0020] 2. The load-tap-changing switch capacity and voltage regulating device drives the first ball screw and the second ball screw to rotate synchronously through the transmission structure, so that the laser range finder can move synchronously with the contact head inside the adjusting device, and displacement variables can be monitored conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the load-tap-changing switch capacity and voltage regulating device.

[0022] Figure 2 It is a structure schematic view of the transmission structure and the first ball screw in the load-tap-changing switch capacity and voltage regulating device.

[0023] Figure 3 It is a structure schematic view of the moving block and the laser range finder in the load-tap-changing switch capacity and voltage regulating device.

[0024] Figure 4 It is a side view sectional view of the transmission box in the load-tap-changing switch capacity and voltage regulating device.

[0025] In the figure: 1, adjusting device; 2, first ball screw; 3, transmission structure; 4, transmission box; 5, servo motor; 6, fixed block; 7, second ball screw; 8, guide rod; 9, moving block; 10, laser range finder; 11, ball nut; 12, collar; 13, first worm gear; 14, second worm gear; 15, rotating shaft; 16, first worm; 17, second worm. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0027] The embodiment is a capacity regulating and voltage regulating device of a load tap changer.

[0028] As shown in Figures 1-4 adjusting device 1, a first ball screw 2 is internally installed in the adjusting device 1, one end of the first ball screw 2 penetrates to the outside of one end of the adjusting device 1, a transmission structure 3 is connected between the first ball screw 2 and the adjusting device 1, the transmission structure 3 comprises a transmission box 4, a servo motor 5, a fixed block 6, a second ball screw 7, a guide rod 8, a moving block 9, a laser range finder 10, a ball nut 11, a sleeve ring 12, a first worm gear 13, a second worm gear 14, a rotating shaft 15, a first worm 16 and a second worm 17, one end of the outer surface of one side of the transmission box 4 is fixedly connected with one end of the outer surface of the adjusting device 1, and one end of the first ball screw 2 extends into one end of the inner cavity of the transmission box 4.

[0029] One end of the second ball screw 7 extends into the other end of the inner cavity of the transmission box 4, the fixed block 6 is fixedly installed on one side of the outer surface of the adjusting device 1 away from one end of the transmission box 4, the guide rod 8 is fixedly installed between one side of the outer surface of the fixed block 6 and one side of the outer surface of the transmission box 4, and the second ball screw 7 is located on one side of the fixed block 6; the ball nut 11 is fixedly installed on one end of the outer surface of the moving block 9, the sleeve ring 12 is fixedly installed on the other end of the outer surface of the moving block 9, the laser range finder 10 is fixedly installed on the middle part of the outer surface of the upper end of the moving block 9, the second ball screw 7 penetrates through the ball nut 11, and the guide rod 8 penetrates through the sleeve ring 12; the servo motor 5 is fixedly installed on the lower part of one end of the outer surface of the transmission box 4, the rotating shaft 15 is connected to one end of the outer surface of the servo motor 5, the second worm 17 is fixedly installed on the outer wall of one end of the rotating shaft 15, the first worm 16 is fixedly installed on the outer wall of the other end of the rotating shaft 15, the second worm wheel 14 is fixedly installed on the outer wall of one end of the second ball screw 7, the first worm wheel 13 is fixedly installed on the outer wall of one end of the first ball screw 2, the second worm wheel 14 is located on the upper end of the outer surface of the second worm 17, and the first worm wheel 13 is located on the upper end of the outer surface of the first worm 16; the ball nut 11 and the outer wall of the second ball screw 7 are in threaded connection, the sleeve ring 12 and the outer wall of the guide rod 8 are in sliding connection, bearings are arranged between the second ball screw 7 and the fixed block 6 and the transmission box 4, the second ball screw 7 is rotationally connected to the fixed block 6 and the transmission box 4 through the bearings, a bearing is arranged between the first ball screw 2 and the transmission box 4, and the first ball screw 2 is rotationally connected to the transmission box 4 through the bearing; the upper end of the outer surface of the second worm 17 and the lower end of the outer surface of the second worm 17 are in meshing connection, the upper end of the outer surface of the first worm 16 and the lower end of the outer surface of the first worm wheel 13 are in meshing connection, a bearing is arranged between the rotating shaft 15 and the transmission box 4, the rotating shaft 15 is rotationally connected to the transmission box 4 through the bearing, a shaft coupling is arranged between the rotating shaft 15 and the servo motor 5, and one end of the outer surface of the rotating shaft 15 is fixedly connected to one end of the outer surface of the output shaft of the servo motor 5 through the shaft coupling.

[0030] It needs to be explained that the utility model is a load tap changer capacity regulating and voltage regulating device, the adjusting device 1 and the first ball screw rod 2 recorded in the paper all belong to prior art, and can be effectively known by the person skilled in the art, and specific details will not be repeated; the transmission structure 3 is arranged, the rotating shaft 15 is driven to rotate through the operation of the servo motor 5, the rotating shaft 15 drives the first worm 16 and the second worm 17 to rotate, the first worm 16 drives the first ball screw rod 2 to rotate through the first worm wheel 13, the second worm 17 drives the second ball screw rod 7 to rotate through the second worm wheel 14, so that the first ball screw rod 2 and the second ball screw rod 7 rotate synchronously, the ball nut 11 is threadedly connected with the second ball screw rod 7, the second ball screw rod 7 drives the moving block 9 to move, the moving block 9 drives the laser range finder 10 to move, the laser range finder 10 detects the distance change between the transmission box 4 and one end, therefore the laser range finder 10 can move synchronously with the contact head inside the adjusting device 1, and displacement variables can be conveniently monitored.

[0031] It needs to be explained that in this paper, relationship terms such as first and second (No. 1, No. 2) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0032] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A kind of on-load tap changer capacity regulating voltage regulating device, including adjusting device (1), first ball screw (2) is installed inside the adjusting device (1), and one end of the first ball screw (2) is penetrated to the outside of one end of adjusting device (1), it is characterized by: The first ball screw (2) is connected with the adjusting device (1) through a transmission structure (3), the transmission structure (3) comprises a transmission box (4), a servo motor (5), a fixed block (6), a second ball screw (7), a guide rod (8), a moving block (9), a laser range finder (10), a ball nut (11), a sleeve ring (12), a first worm wheel (13), a second worm wheel (14), a rotating shaft (15), a first worm (16) and a second worm (17), and one end of the outer surface of the transmission box (4) is fixedly connected with one end of the outer surface of the adjusting device (1), and one end of the first ball screw (2) extends into one end of the inner cavity of the transmission box (4).

2. The device according to claim 1, characterized in that: One end of the second ball screw (7) extends into the other end of the inner cavity of the transmission box (4), the fixed block (6) is fixedly installed on one end of the outer surface of the adjusting device (1) away from the transmission box (4), the guide rod (8) is fixedly installed between one side of the outer surface of the fixed block (6) and one side of the outer surface of the transmission box (4), and the second ball screw (7) is located on one side of the fixed block (6).

3. The device according to claim 2, characterized in that: The ball nut (11) is fixedly installed on one end of the outer surface of the moving block (9), the sleeve ring (12) is fixedly installed on the other end of the outer surface of the moving block (9), the laser range finder (10) is fixedly installed on the middle of the outer surface of the upper end of the moving block (9), the second ball screw (7) penetrates through the ball nut (11), and the guide rod (8) penetrates through the sleeve ring (12).

4. The on-load tap changer device according to claim 3, characterized in that: The servo motor (5) is fixedly installed on the lower part of one end of the outer surface of the transmission box (4), the rotating shaft (15) is connected to one end of the outer surface of the servo motor (5), the second worm (17) is fixedly installed on the outer wall of one end of the rotating shaft (15), the first worm (16) is fixedly installed on the outer wall of the other end of the rotating shaft (15), the second worm wheel (14) is fixedly installed on the outer wall of one end of the second ball screw (7), the first worm wheel (13) is fixedly installed on the outer wall of one end of the first ball screw (2), the second worm wheel (14) is located on the upper end of the outer surface of the second worm (17), and the first worm wheel (13) is located on the upper end of the outer surface of the first worm (16).

5. The on-load tap changer device according to claim 4, characterized in that: The ball nut (11) and the outer wall of the second ball screw (7) are in threaded connection, the sleeve ring (12) and the outer wall of the guide rod (8) are in sliding connection, bearings are arranged between the second ball screw (7) and the fixed block (6) and the transmission box (4), the second ball screw (7) is rotatably connected with the fixed block (6) and the transmission box (4) through the bearings, a bearing is arranged between the first ball screw (2) and the transmission box (4), and the first ball screw (2) is rotatably connected with the transmission box (4) through the bearing.

6. The on-load tap changer device according to claim 5, characterized in that: The upper end outer surface of the second worm (17) is engaged with the lower end outer surface of the second worm (17), the upper end outer surface of the first worm (16) is engaged with the lower end outer surface of the first worm gear (13), a bearing is arranged between the rotating shaft (15) and the transmission box (4), the rotating shaft (15) is rotatably connected with the transmission box (4) through the bearing, a shaft coupling is arranged between the rotating shaft (15) and the servo motor (5), and one end outer surface of the rotating shaft (15) is fixedly connected with one end outer surface of an output shaft of the servo motor (5) through the shaft coupling.

Images