Rapid opening pole-mounted circuit breaker

Abstract

The invention relates to the technical field of pole-mounted circuit breakers, in particular to a fast opening pole-mounted circuit breaker which comprises a body and a main shaft capable of moving horizontally and further comprises a tension spring, a tension adjusting mechanism, a dislocation adjusting mechanism and a side oil buffer. The opening speed can be adjusted by adjusting the tension adjusting mechanism to pull the tension spring to stretch out and draw back, and the position of the side oil buffer can be automatically adjusted when the speed is adjusted, so that the adjustment of the buffer force is realized. And during secondary opening, the oil buffer can be rapidly driven through the horizontal pushing mechanism, the situation of independent action of the rubber buffer is avoided, and compared with the original pole-mounted circuit breaker manufacturing in the prior art, the pole-mounted circuit breaker with the buffer structure is simple in manufacturing, does not increase much cost, and is easy to popularize. And manufacturing and popularization of the power electronic component are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of pole-mounted circuit breakers, and in particular to a fast-tripping pole-mounted circuit breaker. Background Art

[0002] During the mechanical movement of a recloser, the tripping speed is fast and the tripping energy is high. To quickly stop high-speed, high-mass moving objects without causing damage, a buffer is required. The buffering performance significantly impacts the mechanical stability of the recloser. Currently, two main buffer structures are commonly used in the industry: rubber pad buffering and oil buffering.

[0003] Pole-mounted circuit breakers generally utilize a combination of oil and rubber cushioning. Chinese patent application number: CN201810267919.5, title: A novel buffer for intelligent pole-mounted switches and its tripping control method. In the first stage of the tripping movement, the oil buffer intervenes first, absorbing most of the energy. In the second stage of the tripping movement, the oil and rubber buffers work together. The impact received by the rubber buffer is significantly reduced compared to a pure rubber buffer mechanism, weakening its high rebound characteristics, thereby inheriting the low rebound characteristic of the oil buffer. However, this buffering method is only suitable for pole-mounted circuit breakers with a constant tripping speed. When used in locations where a fast tripping speed is required, it cannot increase the tripping speed. Even if the drive spring is forcibly stretched, the cooperation speed is too fast, that is, the tripping force is large. After repeated use, the oil buffer is at risk of being squeezed and leaking, causing the pole-mounted circuit breaker to malfunction.

[0004] While this also solves the slow return flow problem, it does so by inserting a rubber buffer during the second trip to compensate for the reduced buffering performance of the oil buffer. However, the oil buffer is ineffective during this process, resulting in a large impact force on the rubber buffer, which can easily damage the pole-mounted circuit breaker. It should be noted that the situation where two consecutive rapid impacts occur is that if the circuit breaker is tripped during a short circuit, the second trip will occur instantly.

[0005] Therefore, it is necessary to design a pole-mounted circuit breaker with fast opening, which can adjust the opening speed according to the needs of the opening speed, and automatically adjust the buffering force of the oil buffer when adjusting the speed, and can quickly drive the oil buffer during the second opening to avoid the situation where the rubber buffer acts alone. Summary of the Invention

[0006] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a pole-mounted circuit breaker with fast opening, which can adjust the opening speed according to the needs of the opening speed, and can automatically adjust the buffering force of the oil buffer when adjusting the speed, and can quickly drive the oil buffer during the second opening to avoid the situation where the rubber buffer acts alone.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: the present invention provides a pole-mounted circuit breaker with rapid opening, a buffer baffle is fixedly provided on the main shaft, a central oil buffer for colliding with the buffer baffle is fixedly provided on the main body, a rubber buffer for colliding with the main shaft is also fixedly provided on the main body, and also includes a tension spring, a tension adjustment mechanism, a misalignment adjustment mechanism and a side oil buffer, one end of the tension spring is fixedly connected to the middle part of the main shaft through a tension spring seat, the other end of the tension spring is fixedly connected to the displacement seat of the tension adjustment mechanism, the tension adjustment mechanism is fixedly connected to the main body, the tension adjustment mechanism is used to pull and adjust the ultimate tensile length of the tension spring, the side oil buffer can be horizontally slidably installed on the side of the central oil buffer, the misalignment adjustment mechanism is located between the side oil buffer and the tension adjustment mechanism, and the misalignment adjustment mechanism is transmission-connected to the displacement seat and the side oil buffer, and the side oil buffer is used to convert the thrust direction of the displacement seat into a thrust in the opposite direction and transmit it to the side oil buffer.

[0008] Preferably, the misalignment adjustment mechanism includes a rocker arm, a displacement slide and a rotating shaft. The rotating shaft is horizontally fixedly installed on the main body through a shaft seat. The rocker arm is rotatably installed on the main body. The side oil buffer is fixedly provided with a displacement slide. The displacement slide can be horizontally slidably installed on the main body. An upper clamping shaft is fixedly provided on the displacement slide. A lower clamping shaft is fixedly provided on the displacement seat. The rocker arm is provided with one and two waist holes respectively clamped with the upper clamping shaft and the lower clamping shaft.

[0009] Preferably, the rocker arm includes an upper rocker arm, a lower rocker arm and a torsion spring. The ends of the upper rocker arm and the lower rocker arm that are close to each other are rotatably connected to the rotating shaft. The torsion spring is sleeved on the rotating shaft. One of the elastic ends of the torsion spring is in contact with the upper rocker arm. A stop shaft is provided at the bottom of the lower rocker arm. The other elastic end of the torsion spring is in contact with the stop shaft. It also includes a horizontal sliding mechanism. The horizontal sliding mechanism is used to horizontally push the displacement slide toward the buffer baffle. Before the horizontal sliding mechanism is pushed, the working end of the horizontal sliding mechanism is in contact with the adjusted displacement slide. A baffle is fixed on the top of the lower rocker arm to limit the upper rocker arm to a horizontal structure.

[0010] Preferably, there are two tension springs, two horizontal push mechanisms, two side oil buffers and two misalignment adjustment mechanisms, and the two tension springs, two horizontal push mechanisms, two side oil buffers and two misalignment adjustment mechanisms are respectively located on both sides of the central oil buffer.

[0011] Preferably, the tension adjustment mechanism includes a threaded plate, an adjusting bolt and two guide posts, the two guide posts are fixedly connected to the two displacement seats respectively, the guide posts are slidably connected to the outer shell of the main body, the guide posts are fixedly installed at the ends of the two guide posts, the middle part of the threaded plate is engaged with the adjusting bolt, and one end of the adjusting bolt is rotatably connected to the outer shell of the main body.

[0012] Preferably, the horizontal sliding mechanism includes an electric push rod, a driving bevel block and a contact bevel block. The electric push rod is fixedly mounted on the main body, the driving bevel block is fixedly mounted on the output end of the electric push rod, and the contact bevel block is fixedly mounted on the displacement slide. The inclined surface of the contact bevel block contacts the inclined surface of the driving bevel block.

[0013] Preferably, a side plate is fixedly provided on the side of the support seat, a guide bar is fixedly provided on the side where the displacement slide is in contact with the side plate, the side plate is provided with a strip-shaped slide groove for the guide bar to slide horizontally, and a stop block is provided at the end height of the guide bar.

[0014] Preferably, a retaining ring is fixedly provided on the outer edge of the rotating shaft, one side of the torsion spring contacts the upper half of the rocker arm, and the other side of the torsion spring contacts the retaining ring.

[0015] Preferably, two rotating seats are fixedly provided on the main body, the inner sides of the rotating shafts on the two misalignment adjustment mechanisms are fixedly connected, and the outer sides of the two rotating shafts are respectively inserted into the two rotating seats.

[0016] Preferably, the orthographic projection of the buffer baffle can cover the working ends of the central oil buffer and the side oil buffer.

[0017] The beneficial effects of the present invention are as follows: the rapid-tripping pole-mounted circuit breaker can adjust the opening speed by adjusting the tension spring through the tension adjustment mechanism, thereby adjusting the opening speed. Furthermore, when adjusting the speed, the position of the side oil buffer can be automatically adjusted, thereby adjusting the buffer force. Furthermore, during secondary opening, the oil buffer can be quickly driven by the horizontal push mechanism, preventing the rubber buffer from acting alone. When the horizontal push mechanism displaces the side oil buffer, the upper half of the rocker arm can adaptively rotate to ensure that the side oil buffer can be pushed. That is, while the horizontal push mechanism can drive the side oil buffer, it does not affect the tension adjustment mechanism's ability to drive the horizontal push mechanism through the offset adjustment mechanism, ensuring that the two functions can coexist without interfering with each other. Furthermore, compared to conventional pole-mounted circuit breakers, this pole-mounted circuit breaker with an added buffer structure is simpler to manufacture without significantly increasing costs, thus facilitating the manufacture and promotion of power electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 This is a front view of the present invention with part of the housing removed.

[0021] Figure 3 for Figure 2 A partial enlarged view of point A.

[0022] Figure 4 This is the main view after the tension adjustment mechanism is adjusted.

[0023] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0024] Figure 6 It is a schematic diagram of the partial three-dimensional structure decomposition of the present invention.

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the pendulum.

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the pendulum from another perspective.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure in the state where the displacement slide and the support seat are separated.

[0028] Explanation of the accompanying drawings: 1. Main body; 2. Main shaft; 3. Tension spring; 4. Tension adjustment mechanism; 4a. Displacement seat; 4b. Guide column; 4c. Threaded plate; 4d. Adjusting bolt; 5. Misalignment adjustment mechanism; 5a. Rocker arm; 5a1. Upper half of the rocker arm; 5a2. Lower half of the rocker arm; 5a3. Torsion spring; 5a4. Baffle; 5b. Displacement slide; 5c. Rotating shaft; 5d. Upper clamping shaft; 5e. Lower clamping shaft; 5f. Guide bar; 5k. Block; 5s. Block ring; 5j. Rotating seat; 6. Horizontal sliding mechanism; 6a. Electric push rod; 6b. Driving bevel block; 6c. Contact bevel block; 10. Center oil buffer; 10a. Support seat; 10b. Side plate; 11. Side oil buffer; 12. Rubber buffer; 13. Buffer baffle. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Embodiment: The present invention provides a pole-mounted circuit breaker with rapid tripping, comprising a main body 1 and a main shaft 2 capable of horizontal movement, a buffer baffle 13 fixedly provided on the main shaft 2, a central oil buffer 10 fixedly provided on the main body 1 for colliding with the buffer baffle 13, a rubber buffer 12 fixedly provided on the main body 1 for colliding with the main shaft 2, and further comprising a tension spring 3, a tension adjustment mechanism 4, a misalignment adjustment mechanism 5 and a side oil buffer 11, one end of the tension spring 3 being fixedly connected to the middle of the main shaft 2 through a tension spring seat, and the other end of the tension spring 3 being fixedly connected to the displacement seat 4a of the tension adjustment mechanism 4 Then, the tension adjustment mechanism 4 is fixedly connected to the body 1. The tension adjustment mechanism 4 is used to pull and adjust the ultimate tensile length of the tension spring 3. By adjusting the length of the tension spring 3, the speed of the circuit breaker when opening can be changed. The side oil buffer 11 can be installed on the side of the central oil buffer 10 in a horizontally sliding manner. The misalignment adjustment mechanism 5 is located between the side oil buffer 11 and the tension adjustment mechanism 4, and the misalignment adjustment mechanism 5 is connected to the displacement seat 4a and the side oil buffer 11 in a transmission manner. The side oil buffer 11 is used to convert the thrust direction of the displacement seat 4a into a thrust in the opposite direction and transmit it to the side oil buffer 11. When the tension of the tension adjustment mechanism 4 increases, as shown in FIG. Figure 3 As shown, the displacement seat 4a will move to the right, and through the conduction of the misalignment adjustment mechanism 5, the misalignment adjustment mechanism 5 will push the side oil buffer 11 to the left, which will cause the working end of the side oil buffer 11 to extend to the left. During the collision between the buffer baffle 13 and the central oil buffer 10, after the working end of the central oil buffer 10 is compressed to a certain position, the buffer baffle 13 will contact the working end of the side oil buffer 11. At this time, the buffering force of the oil buffer is increased by the combined action of the central oil buffer 10 and the side oil buffer 11, avoiding the risk of the central oil buffer 10 being squeezed and leaking oil when acting alone. The contact position of the buffer baffle 13 and the side oil buffer 11 is adjusted according to the stretched length of the tension spring 3. The entire adjustment process is adaptive, and workers do not need to put their fingers into the circuit breaker. The adjustment process is relatively safe and convenient.

[0031] The misalignment adjustment mechanism 5 includes a rocker arm 5a, a displacement slide 5b, and a rotating shaft 5c. The rotating shaft 5c is horizontally fixed to the main body 1 via a shaft seat. The rocker arm 5a is rotatably mounted on the main body 1. The displacement slide 5b is fixedly mounted on the side oil buffer 11, and the displacement slide 5b is horizontally slidably mounted on the main body 1. The upper clamping shaft 5d is fixedly mounted on the displacement slide 5b, and the lower clamping shaft 5e is fixedly mounted on the displacement seat 4a. The rocker arm 5a is provided with first and second waist holes for engaging with the upper clamping shaft 5d and the lower clamping shaft 5e, respectively. The displacement seat 4a is pushed horizontally, which pulls the lower clamping shaft 5e horizontally, causing the lower clamping shaft 5e to push the rocker arm 5a to rotate. The rocker arm 5a pushes the displacement slide 5b horizontally via the upper clamping shaft 5d. The displacement slide 5b pushes the side oil buffer 11 horizontally, causing the end of the side oil buffer 11 to move closer to or away from the end of the center oil buffer 10.

[0032] The rocker arm 5a includes an upper rocker arm 5a1, a lower rocker arm 5a2 and a torsion spring 5a3. The ends of the upper rocker arm 5a1 and the lower rocker arm 5a2 that are close to each other are rotatably connected to the rotating shaft 5c. The torsion spring 5a3 is sleeved on the rotating shaft 5c. One elastic end of the torsion spring 5a3 is in conflict with the upper rocker arm 5a1. A stop shaft is provided at the bottom of the lower rocker arm 5a2. The other elastic end of the torsion spring 5a3 is in conflict with the stop shaft. It also includes a horizontal sliding mechanism 6. The horizontal sliding mechanism 6 is used to horizontally push the displacement slide 5b to move toward the buffer baffle 13. When the horizontal sliding mechanism 6 is not pushed, the working end of the horizontal sliding mechanism 6 is in contact with the adjusted displacement slide 5b. The top of the lower rocker arm 5a2 is fixedly provided with a baffle 5a4 for limiting the upper rocker arm 5a1 to a horizontal structure. The displacement slide 5b is pushed horizontally by the horizontal push mechanism 6, which enables the displacement slide 5b to move horizontally. In this way, after the first rapid opening of the gate, the central oil buffer 10 and the side oil buffer 11 act simultaneously. During the opening process, the working end of the central oil buffer 10 is squeezed to a lower degree, and the suction force provided by the internal buffer oil is small, so it can quickly recover to the state before compression. At this time, the side oil buffer 11 is pushed by the horizontal push mechanism 6 to compensate for the buffering force that the central oil buffer 10 cannot fully recover. Regardless of how the displacement slide 5b is adjusted by the tension adjustment mechanism 4, the final extension length of the horizontal push mechanism 6 is constant. Among them, the contact of the displacement slide 5b by the horizontal push mechanism 6 can prevent the impact force of the side oil buffer 11 from acting completely on the rocker arm 5a when it is hit, thereby ensuring the stability of the rocker arm 5a.

[0033] In order to ensure that the tension adjustment mechanism 4 and the offset adjustment mechanism 5 can be adjusted, the side oil buffer 11 can also be pushed to move during the secondary rapid opening process. For this purpose, the above-mentioned specific structure of the rocker arm 5a is required. When the displacement slide 5b is pushed to move through the horizontal pushing mechanism 6, the displacement slide 5b will pull the upper half rocker arm 5a1 to rotate through the upper clamping shaft 5d. At this time, the torsion spring 5a3 will be compressed, which ensures that the side oil buffer 11 can adjust the displacement horizontally.

[0034] Although the upper half of the rocker arm 5a1 and the lower half of the rocker arm 5a2 are separate structures, when the side oil buffer 11 is hit, the upper half of the rocker arm 5a1 is mainly subjected to the upward rotational impact force. Due to the blocking effect of the baffle 5a4, the displacement slide 5b is ensured not to be displaced, providing a stable support force for the side oil buffer 11.

[0035] There are two tension springs 3, two horizontal push mechanisms 6, two side oil buffers 11, and two offset adjustment mechanisms 5, each located on either side of the central oil buffer 10. With two of these mechanisms, during the second opening, the two horizontal push mechanisms 6 can be simultaneously pushed, causing them to push the two side oil buffers 11 horizontally. The two side oil buffers 11 provide buffering for the second rapid opening, ensuring a better buffering effect. Alternatively, one horizontal push mechanism 6 can be used for push-only operation, while the other is used for the third rapid opening. This way, after two rapid openings, the working end of the central oil buffer 10 can be fully restored.

[0036] The tension adjustment mechanism 4 comprises a threaded plate 4c, an adjustment bolt 4d, and two guide posts 4b. The two guide posts 4b are fixedly connected to the two displacement seats 4a, respectively. The guide posts 4b are slidably connected to the outer shell of the body 1 and are fixedly mounted at the ends of the two guide posts 4b. The middle portion of the threaded plate 4c engages with the adjustment bolt 4d, and one end of the adjustment bolt 4d is rotatably connected to the outer shell of the body 1. When the elastic force of the tension spring 3 needs to be adjusted, the adjustment bolt 4d is rotated, causing the adjustment bolt 4d to pull the threaded plate 4c horizontally, causing the threaded plate 4c to adjust the position of the two displacement seats 4a, thereby adjusting the elastic force of the tension spring 3.

[0037] The horizontal displacement mechanism 6 comprises an electric push rod 6a, a driving bevel 6b, and a contact bevel 6c. The electric push rod 6a is fixedly mounted on the main body 1, the driving bevel 6b is fixedly mounted at the output end of the electric push rod 6a, and the contact bevel 6c is fixedly mounted on the displacement slide 5b. The inclined surface of the contact bevel 6c contacts the inclined surface of the driving bevel 6b. This contact between the inclined surfaces mitigates and releases impact forces, preventing large horizontal impact forces from directly acting on the electric push rod 6a. The horizontal push of the electric push rod 6a causes the driving bevel 6b to push the contact bevel 6c horizontally, which in turn drives the displacement slide 5b horizontally.

[0038] A side plate 10b is fixed to the side of the support base 10a. A guide bar 5f is fixed to the side of the displacement slide 5b that contacts the side plate 10b. The side plate 10b defines a strip-shaped slot for the guide bar 5f to slide horizontally. A stopper 5k is provided at the end of the guide bar 5f. The guide bar 5f and the stopper 5k allow the displacement slide 5b to slide horizontally on the support base 10a.

[0039] A retaining ring 5s is fixedly provided on the outer edge of the rotating shaft 5c, and one side of the torsion spring 5a3 contacts the upper half swing arm 5a1, and the other side of the torsion spring 5a3 contacts the retaining ring 5s. The retaining ring 5s limits the torsion spring 5a3 to prevent the torsion spring 5a3 from moving sideways.

[0040] Two rotating seats 5j are fixedly provided on the body 1, the inner sides of the rotating shafts 5c on the two misalignment adjustment mechanisms 5 are fixedly connected, and the outer sides of the two rotating shafts 5c are respectively inserted into the two rotating seats 5j. The rotating shafts 5c are supported by the two rotating seats 5j.

[0041] The positive projection of the buffer baffle 13 can cover the working ends of the central oil buffer 10 and the side oil buffer 11. When the buffer baffle 13 is pulled and hit, it can contact the central oil buffer 10 and the side oil buffer 11.

[0042] When the pole-mounted circuit breaker is opened, the tension spring 3 pulls the buffer baffle 13 to collide with the central oil buffer 10 first, and then collide with the rubber buffer 12 through the main shaft 2.

[0043] Depending on the speed, the tension adjustment mechanism 4 is adjusted to extend or shorten the tension spring 3, increasing or decreasing the trip speed. As the trip speed changes, the rocker 5a is pulled to rotate. As the speed increases, the displacement slide 5b pushes the side oil buffer 11 outward. During the trip after speed adjustment, the buffer baffle 13 contacts the working end of the side oil buffer 11, providing a buffer.

[0044] During the first closing after the opening, the horizontal push mechanism 6 pushes the side oil buffer 11 further out, so that the side oil buffer 11 can buffer the second opening. During the pushing process of the horizontal push mechanism 6, only the upper half of the swing arm 5a1 is rotated, and the lower half of the swing arm 5a2 is not rotated.

[0045] During use, this rapid-tripping pole-mounted circuit breaker can adjust the opening speed by adjusting the tension adjustment mechanism 4 to stretch and contract the tension spring 3, thereby adjusting the opening speed. Furthermore, when adjusting the speed, the position of the side oil buffer 11 can be automatically adjusted, thereby adjusting the buffering force. Furthermore, during secondary opening, the oil buffer can be quickly driven by the horizontal push mechanism 6, preventing the rubber buffer from acting alone. When the horizontal push mechanism 6 pushes the side oil buffer 11 to move, the upper half of the rocker arm 5a1 can adaptively rotate to ensure that the side oil buffer 11 can be pushed. That is, while the horizontal push mechanism 6 can push the side oil buffer 11, it will not affect the tension adjustment mechanism 4's ability to drive the horizontal push mechanism 6 via the offset adjustment mechanism 5, ensuring that the two functions can coexist without interfering with each other.

[0046] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A fast-opening column-mounted circuit breaker, comprising a main body (1) and a main shaft (2) capable of horizontal movement, a buffer baffle (13) fixedly provided on the main shaft (2), a central oil buffer (10) fixedly provided on the main body (1) for colliding with the buffer baffle (13), and a rubber buffer (12) fixedly provided on the main body (1) for colliding with the main shaft (2), characterized in that: The invention also includes a tension spring (3), a tension adjustment mechanism (4), a misalignment adjustment mechanism (5) and a side oil buffer (11), one end of the tension spring (3) is fixedly connected to the middle of the main shaft (2) through the tension spring seat, the other end of the tension spring (3) is fixedly connected to the displacement seat (4a) of the tension adjustment mechanism (4), the tension adjustment mechanism (4) is fixedly connected to the main body (1), the tension adjustment mechanism (4) is used to pull and adjust the ultimate tensile length of the tension spring (3), the side oil buffer (11) can be installed on the side of the central oil buffer (10) in a horizontally sliding manner, the misalignment adjustment mechanism (5) is located between the side oil buffer (11) and the tension adjustment mechanism (4), and the misalignment adjustment mechanism (5) is transmission-connected to the displacement seat (4a) and the side oil buffer (11), and the side oil buffer (11) is used to convert the thrust direction of the displacement seat (4a) into thrust in the opposite direction and transmit it to the side oil buffer (11).

2. A fast tripping pole mounted circuit breaker according to claim 1, characterized in that: The misalignment adjustment mechanism (5) includes a rocker arm (5a), a displacement slide (5b) and a rotating shaft (5c). The rotating shaft (5c) is fixedly mounted on the main body (1) in a horizontal manner through a shaft seat. The rocker arm (5a) is rotatably mounted on the main body (1). The side oil buffer (11) is fixedly provided with a displacement slide (5b). The displacement slide (5b) is slidably mounted on the main body (1) in a horizontal manner. An upper clamping shaft (5d) is fixedly provided on the displacement slide (5b). A lower clamping shaft (5e) is fixedly provided on the displacement seat (4a). The rocker arm (5a) is provided with one waist hole and two waist holes respectively engaged with the upper clamping shaft (5d) and the lower clamping shaft (5e).

3. A fast tripping pole mounted circuit breaker according to claim 2, characterized in that: The swing rod (5a) includes an upper swing rod (5a1), a lower swing rod (5a2) and a torsion spring (5a3). The ends of the upper swing rod (5a1) and the lower swing rod (5a2) that are close to each other are both rotatably connected to the rotating shaft (5c). The torsion spring (5a3) is sleeved on the rotating shaft (5c). One elastic end of the torsion spring (5a3) contacts the upper swing rod (5a1). A stop shaft is provided at the bottom of the lower swing rod (5a2). The other end of the torsion spring (5a3) is in contact with the rotating shaft. One elastic end contacts the stop shaft, and the device further includes a horizontal push mechanism (6). The horizontal push mechanism (6) is used to horizontally push the displacement slide (5b) toward the buffer baffle (13). Before the horizontal push mechanism (6) is pushed, the working end of the horizontal push mechanism (6) contacts the adjusted displacement slide (5b), and a baffle (5a4) is fixedly provided on the top of the lower half swing arm (5a2) for limiting the upper half swing arm (5a1) to a horizontal structure.

4. A fast tripping pole mounted circuit breaker according to claim 3, characterized in that: There are two tension springs (3), two horizontal push mechanisms (6), two side oil buffers (11) and two misalignment adjustment mechanisms (5), and the two tension springs (3), two horizontal push mechanisms (6), two side oil buffers (11) and two misalignment adjustment mechanisms (5) are respectively located on both sides of the central oil buffer (10).

5. A fast tripping pole mounted circuit breaker according to claim 4, characterized in that: The tension adjustment mechanism (4) comprises a threaded plate (4c), an adjusting bolt (4d) and two guide pillars (4b), the two guide pillars (4b) are fixedly connected to the two displacement seats (4a) respectively, the guide pillars (4b) are slidably connected to the outer shell of the body (1), the guide pillars (4b) are fixedly mounted on the ends of the two guide pillars (4b), the middle part of the threaded plate (4c) is meshedly connected to the adjusting bolt (4d), and one end of the adjusting bolt (4d) is rotatably connected to the outer shell of the body (1).

6. A fast tripping pole mounted circuit breaker according to claim 3, characterized in that: The horizontal displacement mechanism (6) comprises an electric push rod (6a), a driving inclined block (6b) and a contact inclined block (6c), wherein the electric push rod (6a) is fixedly mounted on the body (1), the driving inclined block (6b) is fixedly mounted on the output end of the electric push rod (6a), and the contact inclined block (6c) is fixedly mounted on the displacement slide (5b), and the inclined surface of the contact inclined block (6c) contacts the inclined surface of the driving inclined block (6b).

7. A fast tripping pole mounted circuit breaker according to claim 2, characterized in that: A side plate (10b) is fixedly provided on the side of the support seat (10a), a guide bar (5f) is fixedly provided on the side of the displacement slide (5b) that is in contact with the side plate (10b), the side plate (10b) is provided with a strip-shaped slide groove for the guide bar (5f) to slide horizontally, and a stop block (5k) is provided at the height of the end of the guide bar (5f).

8. A fast tripping pole mounted circuit breaker according to claim 2, characterized in that: A retaining ring (5s) is fixedly provided on the outer edge of the rotating shaft (5c); one side of the torsion spring (5a3) contacts the upper half of the swing rod (5a1); and the other side of the torsion spring (5a3) contacts the retaining ring (5s).

9. A fast tripping pole mounted circuit breaker according to claim 4, characterized in that: Two rotating seats (5j) are fixedly arranged on the main body (1); the inner sides of the rotating shafts (5c) on the two misalignment adjustment mechanisms (5) are fixedly connected; and the outer sides of the two rotating shafts (5c) are respectively inserted into the two rotating seats (5j).

10. The rapid tripping pole-mounted circuit breaker according to claim 4, characterized in that: The positive projection of the buffer baffle (13) can cover the working ends of the central oil buffer (10) and the side oil buffer (11).

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