Search

CN-224232440-U - Current transformer with damping effect

CN224232440UCN 224232440 UCN224232440 UCN 224232440UCN-224232440-U

Abstract

The utility model relates to the technical field of current transformers and discloses a current transformer with a damping function, which comprises a current transformer main body, wherein a base is fixedly arranged at the bottom end of the current transformer main body, a bidirectional ball screw is rotatably arranged in the base, a ratchet wheel is fixedly arranged at one end of the bidirectional ball screw, an anti-slip knob is fixedly arranged at one end of the ratchet wheel, one side of the base is provided with a unidirectional locking component for unidirectional self-locking of the ratchet wheel, two guide posts are slidably connected to two sides of the bottom end of the base, the two limiting components can be driven to move in opposite directions through the anti-slip knob to rotate the bidirectional ball screw, and can be clamped with the guide posts, so that the base and the guide posts can be limited, the base is free from being mounted by bolts, the guide posts can limit a damping rubber pad, and the damping rubber pad can provide support between a positioning plate and the base.

Inventors

  • WANG CHUANLONG
  • HUANG XIAOJUN
  • GU WENJIE
  • ZENG XIANGSHUN
  • ZHENG YUNGUO

Assignees

  • 衡阳华瑞电气有限公司

Dates

Publication Date
20260512
Application Date
20250514

Claims (8)

  1. 1. The current transformer with the damping effect comprises a current transformer main body (1) and is characterized in that a base (3) is fixedly arranged at the bottom end of the current transformer main body (1), a bidirectional ball screw (4) is rotatably arranged in the base (3), a ratchet wheel (6) is fixedly arranged at one end of the bidirectional ball screw (4), an anti-slip knob (7) is fixedly arranged at one end of the ratchet wheel (6), a unidirectional locking component (8) for unidirectional self-locking of the ratchet wheel (6) is arranged at one side of the base (3), two guide posts (13) are slidably connected to two sides of the bottom end of the base (3), limiting components (15) are arranged at two sides of the bidirectional ball screw (4), a damping rubber pad (9) is sleeved on the surface of the guide post (13), and a positioning plate (10) is fixedly connected to the bottom end of the guide post (13).
  2. 2. The current transformer with damping effect according to claim 1, wherein the unidirectional locking assembly (8) comprises a supporting shaft (801), one end of the supporting shaft (801) is fixedly provided with a pawl (802), the pawl (802) is in clamping connection with a ratchet wheel (6), the middle part of one side of the ratchet wheel (6) is fixedly provided with a connecting shaft (5) fixedly connected with a bidirectional ball screw (4), one side of the pawl (802) is fixedly provided with a deflector rod (803), the surface of the supporting shaft (801) is sleeved with a torsion spring (804), one end of the torsion spring (804) is in clamping connection with the pawl (802), the other end of the torsion spring (804) is in clamping connection with a baffle bar (805), one side of the baffle bar (805) is fixedly connected with one side of a base (3), and the other end of the supporting shaft (801) is in rotating connection with one side of the base (3).
  3. 3. The current transformer with the damping effect according to claim 1, wherein a support (2) is fixedly arranged in the middle of the bottom end of the current transformer main body (1), the bottom end of the support (2) is fixedly connected with the middle of the top end of the base (3), clamping grooves (18) are formed in the front surface and the back surface of the base (3), clamping covers (19) are connected with the front surface and the back surface of the base (3) in a clamping mode, two sliding ways (17) are formed in two sides of the bottom end of the base (3), and the guide posts (13) are in sliding connection with the inner parts of the sliding ways (17).
  4. 4. The current transformer with the damping effect according to claim 1, wherein a first blocking frame (11) is fixedly arranged on two sides of the bottom end of the base (3), the top of the damping rubber pad (9) is connected with the inner part of the first blocking frame (11) in a clamping mode, mounting holes are formed in four corners of the positioning plate (10), a second blocking frame (12) is fixedly arranged on two sides of the top end of the positioning plate (10), the bottom of the damping rubber pad (9) is connected with the inner part of the second blocking frame (12) in a clamping mode, two column grooves (14) are formed in the surface of the damping rubber pad (9), and the guide columns (13) are connected with the column grooves (14) in a clamping mode.
  5. 5. The current transformer with damping effect according to claim 1, wherein the limiting component (15) comprises a sliding table (1501), a screw nut (1502) is fixedly arranged in the middle of the sliding table (1501), the screw nut (1502) is in threaded connection with a bidirectional ball screw (4), two wedge blocks (1503) are fixedly arranged on one side of the sliding table (1501), a wedge groove (20) is formed in the top of the guide pillar (13), the wedge groove (20) and the wedge blocks (1503) are located on the same straight line, and the wedge blocks (1503) are connected with the inner clamping part of the wedge groove (20).
  6. 6. The current transformer with the damping effect according to claim 5, wherein a sliding groove (1504) is formed in the middle of the bottom end of the sliding table (1501), a guide rail (16) is fixedly arranged on the inner wall of the middle of the bottom end of the base (3), and the bottom end of the sliding table (1501) is in sliding connection with the guide rail (16) through the sliding groove (1504).
  7. 7. The current transformer with the damping effect according to claim 1, wherein two reinforcing rods (21) are fixedly arranged in the base (3), a first mounting plate (22) is fixedly arranged at the bottom end of each reinforcing rod (21), the bottom end of each first mounting plate (22) is fixedly connected with the inner wall of the bottom end of the base (3) through a screw, a second mounting plate (23) is fixedly arranged at the top end of each reinforcing rod (21), and the top end of each second mounting plate (23) is fixedly connected with the inner wall of the top end of the base (3) through a screw.
  8. 8. The current transformer with the damping effect according to claim 7, wherein through holes (25) connected with screws are formed in the surface of the first mounting plate (22) and the surface of the second mounting plate (23), threaded grooves are formed in the inner wall of the bottom end and the inner wall of the top end of the base (3), and spring gaskets (24) are sleeved on the surfaces of the screws.

Description

Current transformer with damping effect Technical Field The utility model relates to the technical field of current transformers, in particular to a current transformer with a damping effect. Background The current transformer is an instrument for converting primary side large current into secondary side small current to measure according to an electromagnetic induction principle, the current transformer consists of a closed iron core and windings, the number of turns of the primary winding is small, the primary winding is connected in series in a circuit of current to be measured, therefore, the current transformer always has all current flowing through the circuit, the number of turns of the secondary winding is large, the current transformer is connected in series in a measuring instrument and a protection circuit in series, damping measures are needed to be considered when the current transformer is installed, vibration generated when equipment such as a transformer and a switch cabinet are operated is easily transmitted to the transformer, the internal magnetic core is offset and the windings are loosened, the measuring precision is influenced, even the equipment is damaged, if the current transformer is installed on an unstable base, the internal parts of the transformer are possibly loosened, and the measuring precision and the stability are further influenced. The current monitoring device applied to the hydraulic station motor disclosed by application number 202022694575.1 comprises a current transformer, wherein a damping seat is arranged at the bottom of the current transformer, and a mounting base is arranged at the bottom of the damping seat. According to the utility model, the current transformer is arranged on the motor, the electric wire of current passes through the through hole in the middle of the current transformer and is wound, so that the current passing through the motor can be effectively monitored, the motor is ensured to work in a stable environment, the service life of the motor is prolonged, and the damping seat at the bottom of the current transformer is arranged, so that the installation is more stable, and the influence of vibration caused by the operation of the motor on the current transformer is avoided. However, the mode has the following defects that the rubber cushion block can absorb kinetic energy and ensure the stability of the current transformer, but the current transformer is required to be fixed through the mounting rod and the nut, and in a vibration environment, the mounting base is easy to transmit vibration to the nut through the mounting rod, so that the loosening of the nut and the rubber pad is easy to cause the stability to be reduced. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a current transformer with a damping effect, which has the advantages of difficult loosening and good stability, and solves the problems proposed by the background art. The current transformer with the damping effect comprises a current transformer main body, wherein a base is fixedly arranged at the bottom end of the current transformer main body, a bidirectional ball screw is rotatably arranged in the base, a ratchet wheel is fixedly arranged at one end of the bidirectional ball screw, an anti-slip knob is fixedly arranged at one end of the ratchet wheel, a unidirectional locking component for unidirectional self-locking of the ratchet wheel is arranged at one side of the base, two guide posts are slidably connected to two sides of the bottom end of the base, a limiting component for limiting the space between the base and the guide posts is arranged on two sides of the bidirectional ball screw, a damping rubber pad is sleeved on the surface of the guide post, and a positioning plate is fixedly connected to the bottom end of the guide post. As a preferable technical scheme of the utility model, the unidirectional locking assembly comprises a supporting shaft, one end of the supporting shaft is fixedly provided with a pawl, the pawl is in clamping connection with a ratchet wheel, the middle part of one side of the ratchet wheel is fixedly provided with a connecting shaft fixedly connected with a bidirectional ball screw, one side of the pawl is fixedly provided with a deflector rod, the surface of the supporting shaft is sleeved with a torsion spring, one end of the torsion spring is in clamping connection with the pawl, the other end of the torsion spring is in clamping connection with a barrier strip, one side of the barrier strip is fixedly connected with one side of a base, and the other end of the supporting shaft is in rotating connection with one side of the base. As a preferable technical scheme of the utility model, a support is fixedly arranged in the middle of the bottom end of the main body of the current transformer, the bottom end of the support is fixedly connected with the middle of the top end of a base, clamping