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CN-224217418-U - Automatic pressure spring device for closing resistor

CN224217418UCN 224217418 UCN224217418 UCN 224217418UCN-224217418-U

Abstract

The utility model relates to an automatic pressure spring device for a closing resistor, which comprises a top plate, a supporting plate positioned at the lower end of the top plate, and a plurality of springs with two ends in contact connection with the top plate and the supporting plate, wherein a rotating rod which is arranged corresponding to the springs and penetrates through the corresponding springs is detachably connected to the top plate, and the rotating rods are synchronously connected to the supporting plate in a sliding manner along the height direction. When the rotary rod is used, the top plate and the supporting plate are connected through the rotary rods, so that the top plate and the supporting plate extrude the springs, the installation is convenient, meanwhile, the rotary rods play a guiding role in the extension and contraction of the springs, and because the rotary rods slide synchronously, the springs extend and contract synchronously, the top plate is stressed synchronously, and the damage to the closing springs is reduced.

Inventors

  • LU CHAO
  • NING FANGLIANG
  • LIU GANG
  • QU TING
  • LI YANBIN

Assignees

  • 山东泰开高压开关有限公司

Dates

Publication Date
20260508
Application Date
20250527

Claims (7)

  1. 1. The automatic pressure spring device for the closing resistor is characterized by comprising a top plate (7), a supporting plate (4) positioned at the lower end of the top plate (7) and a plurality of springs with two ends in contact connection with the top plate (7) and the supporting plate (4), wherein a rotating rod (6) which is arranged corresponding to the springs and penetrates through the corresponding springs is detachably connected to the top plate (7), and the rotating rods (6) are synchronously connected to the supporting plate (4) in a sliding mode along the height direction.
  2. 2. The automatic pressure spring device for the closing resistor, as set forth in claim 1, characterized in that the support plate (4) is connected with a screw rod (5) which is arranged corresponding to the rotary rod (6) in a shaft way and is connected with the corresponding rotary rod (6) in a threaded way, and the lower end of the support plate (4) is also provided with a driving device (2) which drives a plurality of screw rods (5) to rotate synchronously.
  3. 3. The automatic pressure spring device for closing resistors according to claim 2, wherein the driving device (2) comprises driven gears (22) which are arranged corresponding to the screw rods (5) and are arranged coaxially with the corresponding screw rods (5), driving gears (21) which are positioned among the driven gears (22) and are meshed with the driven gears (22), and a motor (3) for driving the driving gears (21) to rotate.
  4. 4. The automatic pressure spring device for closing resistors, as set forth in claim 3, is characterized in that a gear seat (1) is disposed below the supporting plate (4), a ground supporting leg (12) is disposed on the bottom surface of the gear seat (1), a stand column (14) with the top surface connected with the supporting plate (4) is disposed on the top surface of the gear seat (1), a driven wheel shaft (15) fixedly connected with a corresponding driven gear (22) is further connected onto the gear seat (1) in a shaft mode, a plurality of driven wheel shafts (15) are located on a first circle, and the center of the first circle is located on the axis of the driving gear (21).
  5. 5. The automatic pressure spring device for closing resistor according to claim 4, wherein the bottom surface of the supporting plate (4) is provided with a groove corresponding to the upright post (14).
  6. 6. The automatic pressure spring device for closing resistance according to claim 5, wherein the thickness of the driven gear (22) is smaller than the height between the bottom surface of the support plate (4) and the top surface of the gear seat (1).
  7. 7. The automatic pressure spring device for closing resistors according to claim 2, wherein the rotary rod (6) comprises an external thread part (62) connected to the top end of the internal thread part (61), the internal thread part (61) is in threaded connection with the screw rod (5), the external thread part (62) extends upwards to pass through the top plate (7), and a positioning nut (8) in contact connection with the top surface of the top plate (7) is in threaded connection with the external thread part (62).

Description

Automatic pressure spring device for closing resistor Technical Field The utility model relates to the technical field of high-voltage circuit breaker structure installation and maintenance, in particular to an automatic pressure spring device for a closing resistor. Background For the power grid with voltage class of 363kV and above, when the long line is closed, especially when the amplitude of the power supply voltage is in phase opposition with the residual voltage of the line, the system parameter is suddenly changed, so that the electromagnetic energy of the power grid oscillates to cause larger overvoltage, the overvoltage is limited, and a closing resistor is usually arranged at the structure of the circuit breaker, so that part of the electric energy in the power grid is absorbed and converted into heat energy, and the purposes of weakening electromagnetic oscillation and limiting overvoltage are achieved. The switch-on resistance unit mainly comprises resistance card and spring, is convenient for assemble the catch through compressing switch-on resistance card spring when the installation, and prior art is through manually spinning nut in turn on pressure spring frock to compress tightly the roof, thereby make the spring compression, this kind of mounting means waste time and energy, and when spinning the nut in turn, can lead to the atress of roof inhomogeneous, probably can cause the damage to the switch-on spring. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the automatic pressure spring device for the closing resistor, which is convenient for installing the spring and synchronously stretches the spring, so that the top plate is synchronously stressed, and the damage to the closing spring is reduced. The utility model is realized by the following technical scheme that the automatic pressure spring device for the closing resistor comprises a top plate, a supporting plate positioned at the lower end of the top plate and a plurality of springs with two ends in contact connection with the top plate and the supporting plate, wherein a rotating rod which is arranged corresponding to the springs and penetrates through the corresponding springs is detachably connected to the top plate, and the rotating rods are synchronously connected to the supporting plate in a sliding manner along the height direction. When the rotary rod is used, the top plate and the supporting plate are connected through the rotary rods, so that the top plate and the supporting plate extrude the springs, the installation is convenient, meanwhile, the rotary rods play a guiding role in the extension and contraction of the springs, and because the rotary rods slide synchronously, the springs extend and contract synchronously, the top plate is stressed synchronously, and the damage to the closing springs is reduced. Preferably, the support plate is connected with a screw rod which is correspondingly arranged with the rotary rod and is in threaded connection with the corresponding rotary rod in a shaft way, and the lower end of the support plate is also provided with a driving device for driving a plurality of screw rods to synchronously rotate. This preferred scheme is through the cooperation of lead screw and dwang to realize that the dwang utilizes the effort between the screw thread when sliding in the backup pad, thereby overcome the elasticity of spring, thereby play the effect of fixed spring, also need not increase restriction dwang gliding fibrous structure simultaneously, thereby simplify the structure. Preferably, the driving device comprises driven gears, driving gears and a motor, wherein the driven gears are arranged corresponding to the screw rods and are coaxially arranged corresponding to the screw rods, the driving gears are positioned between the driven gears and are meshed with the driven gears, and the motor is used for driving the driving gears to rotate. This preferred scheme drives the setting of a plurality of driven gears through the driving gear, realizes the synchronous rotation of a plurality of lead screws to can realize the synchronous slip of a plurality of dwells, thereby realize the synchronous flexible of a plurality of springs. Preferably, a gear seat is arranged below the supporting plate, a ground supporting leg is arranged on the bottom surface of the gear seat, an upright column with the top surface connected with the supporting plate is arranged on the top surface of the gear seat, a driven wheel shaft fixedly connected with a corresponding driven gear is also connected onto the gear seat in a shaft mode, a plurality of driven wheel shafts are located on a first circle, and the center of the first circle is located on the axis of the driving gear. This preferred scheme plays the effect of support backup pad through the setting of gear seat, sets up through the position of driven shaft and driving gear simultaneously, realizes that driven gear r