Pole-mounted circuit breaker patch cord device

Abstract

The utility model discloses a patch cord device of a pole-mounted circuit breaker, and relates to the technical field of electrical equipment connection. The junction box comprises a junction box and a connector lug, the top of the junction box is provided with a mounting hole, and the bottom of the connector lug is provided with a positioning hole; a sealing mechanism is arranged in an inner cavity of the junction box and comprises a driving block arranged at the top of the inner cavity of the junction box and a driving wheel located on one side of the driving block. Through a transmission mechanism of the driving block, the driving wheel and the jacking block, axial locking force of the bolt is accurately converted into radial sealing pressure, linear conversion of torque and pressure is achieved, it is guaranteed that the optimal sealing compression amount can be obtained under different installation working conditions, the six sealing units in the circumferential array work independently and cooperate with one another, and the sealing effect is good. An annular continuous sealing belt is formed, single-point pressure fluctuation is automatically balanced through a spring compensation system, and a pressure blind area in a traditional structure is effectively eliminated.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment connection technology, and in particular relates to a pole-mounted circuit breaker transfer wire device. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions, and can carry and interrupt current under abnormal circuit conditions (including short circuit conditions) within a specified time. A pole-mounted circuit breaker is a circuit breaker installed and operated on a power pole during the construction of transmission lines. It is mainly used for the segmented switching, control, and protection of transmission and distribution line sections. As an important protection device in the power system, the reliability of the transfer connection device of the pole-mounted circuit breaker directly affects the safe operation of the power grid.

[0003] Existing adapter cable devices mostly use simple sealing ring structures for protection, but they have significant drawbacks under long-term harsh outdoor conditions: The existing sealing structures have the following shortcomings: bolt preload cannot be effectively converted into uniform radial sealing pressure; gaskets are prone to plastic deformation after long-term compression, leading to seal failure; and they lack the ability to adaptively adjust the sealing state, easily creating sealing gaps when temperatures change. These defects cause existing devices to experience problems such as decreased insulation performance and contact corrosion in harsh environments such as humidity and salt spray.

[0004] To address these issues, we provide a pole-mounted circuit breaker transfer device. Utility Model Content

[0005] The purpose of this utility model is to provide a pole-mounted circuit breaker transfer cable device, which solves the problem of poor sealing performance of existing pole-mounted circuit breaker transfer cable devices by means of the structural cooperation of mounting bolts and sealing mechanism.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a pole-mounted circuit breaker transfer device, comprising a junction box and a connector. The junction box has an installation hole at its top, and the connector has a positioning hole at its bottom. The junction box has a sealing mechanism, which includes a drive block at the top of the junction box, a drive wheel on one side of the drive block, a lifting block fixedly connected to the other end of the drive wheel, a sealing groove at the top of the junction box, and a sealing ring inside the sealing groove.

[0008] The present invention is further configured such that there are six mounting holes and six positioning holes, arranged in a circular array. The circular array design of the six mounting holes and positioning holes ensures that the connector is subjected to uniform force, avoids uneven deformation of the sealing ring caused by unilateral compression, and improves the sealing reliability.

[0009] The present invention is further configured such that an installation bolt is provided in the inner cavity of the positioning hole, and both the mounting hole and the positioning hole are threaded holes. The connector is fixedly connected to the junction box through the installation bolt. The installation bolt fixes the connector through the threaded hole, and its screw-in depth is related to the downward stroke of the drive block. The compression of the sealing ring can be adjusted to adapt to different installation torque requirements.

[0010] The present invention is further configured such that a sliding sleeve is fixedly connected to one side of the driving block, a sliding rod is slidably connected to the inner cavity of the sliding sleeve, and mounting plates are fixedly connected to both sides of the sliding rod. The sliding cooperation between the sliding sleeve and the sliding rod ensures that the driving block moves only in the vertical direction, thereby ensuring the axial movement of the driving block and avoiding jamming.

[0011] The present invention is further configured such that one side of the mounting plate is fixedly connected to the top of the inner cavity of the junction box, and the number of the driving blocks is six, which are respectively located directly below the mounting holes. The driving blocks correspond one-to-one with the mounting holes, ensuring that the tightening force of each bolt acts independently on the corresponding sealing area, thereby achieving multi-point dynamic sealing.

[0012] The present invention is further configured such that a spring is sleeved on the surface of the slide rod, one end of the spring is fixedly connected to one side of the slide sleeve, and the other end of the spring is fixedly connected to one side of the mounting plate. When the spring is disassembled, it provides a restoring force to return the drive block to its original position and the sealing ring automatically disengages from the compressed state, which facilitates maintenance.

[0013] The present invention is further configured such that an embedding groove is provided on one side of the connector, and the embedding groove and the sealing ring form a nested structure to restrict the lateral displacement of the sealing ring and enhance the sealing stability.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model uses a transmission mechanism consisting of a drive block, a drive wheel, and a lifting block to precisely convert the axial locking force of the bolt into radial sealing pressure, achieving linear conversion between torque and pressure. This ensures that the optimal sealing compression can be obtained under different installation conditions. The six circumferential array sealing units work independently yet cooperate with each other to form a continuous annular sealing band. Single-point pressure fluctuations are automatically balanced by a spring compensation system, effectively eliminating pressure blind spots in traditional structures.

[0016] 2. This utility model forms a three-dimensional nested fit between the sealing ring and the embedded groove. The radial and axial composite clamping force is applied through the arc-shaped contact surface of the lifting block to restrict the three-dimensional displacement of the sealing material, thereby improving its resistance to vibration and loosening. The spring-driven reset mechanism can automatically release the compression stress of the sealing ring during disassembly, avoiding material creep caused by over-compression in traditional structures and extending the service life of the seal.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a pole-mounted circuit breaker transfer cable device.

[0020] Figure 2 This is an exploded view of a pole-mounted circuit breaker transfer cable device.

[0021] Figure 3 This is a diagram showing the fit between a sealing ring and an embedded groove in a pole-mounted circuit breaker transfer cable assembly.

[0022] Figure 4 This is a bottom view of the junction box in a pole-mounted circuit breaker transfer device.

[0023] Figure 5 This is a diagram showing the connection between the drive block and the drive wheel in a pole-mounted circuit breaker transfer device.

[0024] In the attached diagram: 1. Junction box; 2. Wiring head; 3. Mounting hole; 4. Positioning hole; 5. Drive block; 6. Drive wheel; 7. Lifting block; 8. Sealing groove; 9. Mounting bolt; 10. Sliding sleeve; 11. Sliding rod; 12. Mounting plate; 13. Spring; 14. Embedded groove; 15. Sealing ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5 This utility model is a pole-mounted circuit breaker transfer device, including a junction box 1 and a connector 2. The junction box 1 has an installation hole 3 on the top and a positioning hole 4 on the bottom of the connector 2. The junction box 1 has a sealing mechanism in its inner cavity. The sealing mechanism includes a drive block 5 on the top of the inner cavity of the junction box 1, a drive wheel 6 on one side of the drive block 5, a lifting block 7 fixedly connected to the other end of the drive wheel 6, a sealing groove 8 on the top of the junction box 1, and a sealing ring 15 in the inner cavity of the sealing groove 8.

[0028] Further details: The outer ring surface of the connector 2 is provided with external threads to facilitate the installation of the protective sleeve. The drive block 5 is equilateral trapezoidal in shape, with one of its two inclined surfaces contacting the bottom of the mounting bolt 9 and the other inclined surface contacting the bottom pulley of the drive wheel 6. This allows the feed distance of the mounting bolt 9 to match the feed distance of the lifting block 7. The lifting block 7 is an arc-shaped plate, which increases the contact area of ​​the remaining sealing rings 15, preventing fatigue damage to the sealing rings 15 and improving their service life.

[0029] Example 2

[0030] Please see Figures 1-5 Based on embodiment 1, there are six mounting holes 3 and six positioning holes 4, arranged in a circular array. The inner cavity of the positioning hole 4 is provided with mounting bolts 9. Both mounting holes 3 and positioning holes 4 are threaded holes. The connector 2 is fixedly connected to the junction box 1 through the mounting bolts 9. A sliding sleeve 10 is fixedly connected to one side of the drive block 5. A sliding rod 11 is slidably connected to the inner cavity of the sliding sleeve 10. Mounting plates 12 are fixedly connected to both sides of the sliding rod 11. One side of the mounting plate 12 is fixedly connected to the top of the inner cavity of the junction box 1. There are six drive blocks 5, which are located directly below the mounting holes 3. A spring 13 is sleeved on the surface of the sliding rod 11. One end of the spring 13 is fixedly connected to one side of the sliding sleeve 10, and the other end of the spring 13 is fixedly connected to one side of the mounting plate 12. An embedded groove 14 is opened on one side of the connector 2.

[0031] Further details: The circumferential array design of the six mounting holes 3 and positioning holes 4 ensures uniform force on the connector 2, avoiding uneven deformation of the sealing ring 15 caused by unilateral compression, thus improving sealing reliability. The mounting bolt 9 fixes the connector 2 through the threaded hole, and its screwing depth is related to the downward stroke of the drive block 5, which can adjust the compression of the sealing ring 15 to adapt to different installation torque requirements. The sliding fit between the sliding sleeve 10 and the sliding rod 11 ensures that the drive block 5 moves only in the vertical direction, ensuring axial movement of the drive block 5 and avoiding jamming. The spring 13 provides a restoring force during disassembly, allowing the drive block 5 to return to its original position, and the sealing ring 15 automatically disengages from the compressed state for easy maintenance. The drive block 5 corresponds one-to-one with the mounting holes 3, ensuring that the tightening force of each bolt acts independently on the corresponding sealing area, achieving multi-point dynamic sealing. The embedded groove 14 and the sealing ring 15 form a nested structure, restricting the lateral displacement of the sealing ring 15 and enhancing sealing stability.

[0032] The working principle of this utility model is as follows: the junction box 1 and the connector 2 are fixedly connected by six mounting bolts 9. When the mounting bolts 9 are tightened, the bottom end of the bolt presses against the inclined surface of the drive block 5 and moves downward. The sliding sleeve 10 slides along the axial direction of the sliding rod 11 to compress the spring 13. The rolling contact between the inclined surface of the drive block 5 and the drive wheel 6 converts the horizontal displacement into a vertical displacement. The drive wheel 6 shaft drives the lifting block 7 to make a vertical upward movement. The arc-shaped working surface of the lifting block 7 presses the sealing ring 15 evenly into the embedded groove 14 of the connector 2 to form a radial expansion seal.

[0033] As the bolt torque increases, the displacement of the drive block 5 increases linearly, and the lifting block 7 generates a precise lift corresponding to the torque value, realizing controllable adjustment of the sealing compression. When the ambient temperature changes and the material expands or contracts, the elastic compensation function of the spring 13 automatically adjusts the height of the lifting block 7 through the displacement of the sliding sleeve 10 to maintain a constant sealing pressure. When disassembling, the bolt is rotated in the opposite direction, the spring 13 releases its stored energy to push the drive block 5 to reset, and the lifting block 7 descends to release the compression state of the sealing ring 15, realizing non-destructive disassembly.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pole-mounted circuit breaker transfer device, comprising a junction box (1) and a terminal block (2), characterized in that: The junction box (1) has an installation hole (3) at the top, and the connector (2) has a positioning hole (4) at the bottom; The junction box (1) is provided with a sealing mechanism. The sealing mechanism includes a drive block (5) located at the top of the junction box (1), a drive wheel (6) located on one side of the drive block (5), a lifting block (7) fixedly connected to the other end of the drive wheel (6), a sealing groove (8) opened at the top of the junction box (1), and a sealing ring (15) provided in the inner cavity of the sealing groove (8).

2. The pole-mounted circuit breaker transfer cable device according to claim 1, characterized in that: The number of mounting holes (3) and positioning holes (4) are both six, and they are arranged in a circular array.

3. The pole-mounted circuit breaker transfer device according to claim 1, characterized in that: The positioning hole (4) is provided with a mounting bolt (9). Both the mounting hole (3) and the positioning hole (4) are threaded holes. The connector (2) is fixedly connected to the junction box (1) by the mounting bolt (9).

4. The pole-mounted circuit breaker transfer cable device according to claim 1, characterized in that: A sliding sleeve (10) is fixedly connected to one side of the drive block (5), and a sliding rod (11) is slidably connected to the inner cavity of the sliding sleeve (10). Mounting plates (12) are fixedly connected to both sides of the sliding rod (11).

5. A pole-mounted circuit breaker transfer cable device according to claim 4, characterized in that: The mounting plate (12) is fixedly connected to the top of the inner cavity of the junction box (1) on one side. There are six drive blocks (5), which are located directly below the mounting holes (3).

6. A pole-mounted circuit breaker transfer device according to claim 4, characterized in that: A spring (13) is fitted on the surface of the slide rod (11). One end of the spring (13) is fixedly connected to one side of the slide sleeve (10), and the other end of the spring (13) is fixedly connected to one side of the mounting plate (12).

7. The pole-mounted circuit breaker transfer device according to claim 1, characterized in that: An embedding groove (14) is provided on one side of the connector (2).

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