A high-voltage circuit breaker mechanical closing locking device

Abstract

The application provides a novel high-voltage circuit breaker mechanical closing locking device, belonging to the technical field of high-voltage circuit breakers, which comprises a box body, an arc-shaped adjusting groove is formed in the inner wall of the box body, a rotating seat rotatingly connected to the inside of the arc-shaped adjusting groove is rotatingly connected to the inner wall of the box body, and a guide rod slidingly connected with the arc-shaped adjusting groove is fixedly connected to the front end of the rotating seat; by arranging a one-way blocking mechanism, when the superior staff erroneously rotates the driving shaft, the straight surface of the one-way blocking block can block the guide rod, the guide rod blocks the driving shaft from continuing to rotate through the rotating seat, so that the driving shaft is prevented from driving the subsequent operating mechanism to perform the closing operation of the high-voltage circuit breaker, the probability of the misoperation of the superior staff is reduced, the maintenance of the subordinate maintenance personnel on the high-voltage circuit breaker is safer, and the effect of improving the anti-misoperation performance of the high-voltage circuit breaker closing locking device is achieved.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage circuit breaker technology, and more specifically, relates to a mechanical closing interlocking device for high-voltage circuit breakers. Background Technology

[0002] Mechanical interlocking is a mechanical mechanism that uses mutual constraints and linkages between the opening and closing operating parts of a high-voltage circuit breaker. Currently, most outdoor high-voltage vacuum circuit breakers adopt a three-phase pillar structure. This type of circuit breaker mainly consists of three parts: the circuit breaker body, the disconnecting switch, and the operating mechanism. Since multiple sets of vacuum circuit breakers are installed on the line, when maintaining the line, maintenance personnel need to first open the upstream circuit breaker to disconnect the current before maintaining the downstream circuit breaker. Because the operating shaft of the circuit breaker can rotate freely for opening and closing operations, if someone accidentally closes the upstream circuit breaker, it may cause electric shock to the downstream maintenance personnel, resulting in personal injury accidents and posing a significant safety hazard. Summary of the Invention

[0003] The purpose of this invention is to provide a mechanical closing interlocking device for high-voltage circuit breakers, which aims to solve the problem that the existing closing interlocking devices for high-voltage circuit breakers have poor anti-accidental contact performance and are prone to causing safety accidents.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A mechanical closing interlocking device for a high-voltage circuit breaker is provided, comprising a housing, an anti-accidental contact device, and a closing unlocking device. An arc-shaped adjustment groove is provided on one side of the inner wall of the housing. A rotating seat, rotatably connected to the inner wall of the housing and rotatably connected to the inside of the arc-shaped adjustment groove, is fixedly connected to the front end of the rotating seat with a guide rod slidably connected to the arc-shaped adjustment groove. A drive shaft is fixedly connected to the inner side of the rotating seat. The anti-accidental contact device is installed on the outside of the housing, and its rear end penetrates the housing and extends into the inside of the arc-shaped adjustment groove. The closing unlocking device is rotatably connected to the outside of the housing, and its rear end penetrates the housing and is fixedly connected to the drive shaft. The anti-accidental contact device includes a one-way blocking mechanism and an unlocking mechanism. The one-way blocking mechanism is installed on the outside of the housing, and its rear end penetrates the housing and extends into the inside of the arc-shaped adjustment groove. The unlocking mechanism is slidably connected to the inner bottom wall of the arc-shaped adjustment groove, and its upper surface contacts the lower surface of the guide rod.

[0005] In one possible implementation, the interior of the housing is provided with a first mounting groove communicating with the arc-shaped adjustment groove. The one-way blocking mechanism includes a one-way blocking block slidably connected to the inner wall of the first mounting groove. The rear end of the one-way blocking block passes through the first mounting groove and extends into the interior of the arc-shaped adjustment groove. The horizontal cross-sectional shape of the one-way blocking block is a right trapezoid. The inclined surface of the one-way blocking block is located inside the arc-shaped adjustment groove and on the side away from the guide rod. An adjustment rod is fixedly connected to the front end of the one-way blocking block. The front end of the adjustment rod passes through the arc-shaped adjustment groove and extends to the outside of the housing. A first spring is sleeved on the surface of the adjustment rod. The two ends of the first spring contact the inner wall of the first mounting groove away from the arc-shaped adjustment groove and the front end of the one-way blocking block, respectively.

[0006] In one possible implementation, the front end of the adjusting rod is rotatably connected to a stainless steel pull ring, the surface of which is smooth.

[0007] In one possible implementation, a ball bearing is embedded at the front end of the guide rod, the surface of the ball bearing away from the guide rod is in contact with the inner wall of the arc-shaped adjustment groove away from the drive shaft, and the ball bearing and the inclined surface of the one-way blocking block are on the same vertical plane.

[0008] In one possible implementation, the interior of the housing is provided with an arc-shaped guide groove, the inner bottom wall of the arc-shaped adjustment groove is connected to the arc-shaped guide groove, the interior of the housing is provided with a connecting groove, the inner bottom wall of the first mounting groove and the inner top wall of the arc-shaped guide groove are respectively connected to the inner top wall and inner bottom wall of the connecting groove, the lower end of the one-way blocking block is provided with a one-way positioning groove, and the unlocking mechanism includes an arc-shaped guide rod slidably connected to the inner wall of the arc-shaped guide groove, the lower end of the arc-shaped guide rod is fixedly connected to a guide plate, and the end of the guide plate away from the arc-shaped guide rod passes through the arc-shaped adjustment groove. The groove contacts the lower surface of the guide rod. The upper end of the arc-shaped guide rod is fixedly connected to a first connecting rope. The upper end of the first connecting rope passes through the arc-shaped guide groove and extends into the interior of the connecting groove. The upper end of the connecting groove is fixedly connected to a connecting frame that slides through the connecting groove. The upper end of the connecting frame is fixedly connected to a one-way positioning block. The cross-sectional shapes of the one-way positioning block and the one-way positioning groove are both matching right-angled triangles. The inclined surfaces of the one-way positioning block and the one-way positioning groove both face the arc-shaped adjustment groove. The lower end of the connecting frame is fixedly connected to a second spring that contacts the connecting groove.

[0009] In one possible implementation, the second spring is in a compressed state and is sleeved on the surface of the first connecting rope.

[0010] In one possible implementation, the lower end of the guide plate is fixedly connected to a guide post that is slidably connected to the arc-shaped guide groove. The cross-sectional shape of the guide post is arc-shaped, and the center points of the arc-shaped adjustment groove, the arc-shaped guide groove, the arc-shaped guide rod, and the guide post all coincide with the center point of the drive shaft.

[0011] In one possible implementation, the lower end of the guide plate is fixedly connected to a third spring that contacts the bottom wall of the arc-shaped guide groove. The third spring is sleeved on the surface of the guide post and is in a compressed state at this time.

[0012] In one possible implementation, the front end of the drive shaft has a first drive groove, and the closing and unlocking device includes a connecting post fixedly connected to the front end of the drive shaft. The front end of the connecting post extends to the outside of the housing. The front end of the connecting post is fixedly connected to a second drive groove aligned with the first drive groove. An adjusting post is slidably connected to the inner wall of the second drive groove. The adjusting post has a cavity inside. The vertical cross-sectional shapes of the first drive groove, the second drive groove, and the adjusting post are all matching squares. The surface of the connecting post is fitted with a connecting post that is fixedly connected to one side of the inner wall of the housing. The connecting ring has an annularly distributed check groove on its inner side. The connecting column has a second mounting groove that communicates with the second driving groove on its surface. A check block that engages with the adjacent check groove is slidably connected to the inner wall of the second mounting groove. The cross-sectional shapes of the check block and the check groove are both matching right-angled triangles. The inclined surface of the check groove is set in the direction from the arc-shaped guide groove to the connecting groove. The inclined surface of the check block fits against the inclined surface of the adjacent check groove. A second connecting rope is fixedly connected between the check block and the adjusting column. A fourth spring is sleeved on the surface of the second connecting rope.

[0013] In one possible implementation, the two ends of the fourth spring are in contact with the inner wall of the second mounting groove near the adjusting column and the end of the check block near the adjusting column, respectively, and the fourth spring is in a compressed state at this time.

[0014] The beneficial effects of this invention are:

[0015] 1. By setting a one-way blocking mechanism, when the upper-level staff accidentally rotates the drive shaft, the straight surface of the one-way blocking block can block the guide rod. The guide rod prevents the drive shaft from continuing to rotate through the rotating seat, thereby preventing the drive shaft from driving the subsequent operating mechanism to perform the closing operation of the high-voltage circuit breaker. This reduces the probability of misoperation by the upper-level staff, making it safer for the lower-level maintenance personnel to maintain the high-voltage circuit breaker, thus improving the anti-misoperation performance of the high-voltage circuit breaker closing interlocking device.

[0016] 2. By setting an unlocking mechanism, when the guide rod contacts the guide plate, the guide rod presses down on the guide plate during subsequent movement. The guide plate drives the arc-shaped guide rod to move down, and the arc-shaped guide rod pulls the first connecting rope. The first connecting rope pulls down the connecting frame, and the connecting frame drives the one-way positioning block to separate from the one-way positioning groove and retract into the interior of the connecting groove. At this time, the one-way blocking block and the first spring lose resistance at the same time. The first spring quickly pushes the one-way blocking block into the interior of the arc-shaped adjustment groove. At this time, even if the operator accidentally turns the operating handle back, the straight surface of the one-way blocking block will prevent the guide rod from turning back. This eliminates the need for the operator to manually push the one-way blocking block into the interior of the arc-shaped adjustment groove, thereby improving the safety factor of the one-way blocking mechanism.

[0017] 3. By setting up a closing and unlocking device and adopting a one-way blocking design, during the process of the high-voltage circuit breaker automatically tripping due to a fault, the check groove cannot block the rotation of the check block. At this time, the drive shaft can drive the guide rod to rotate to the tripping position through the rotating seat. If the operator does not insert the operating handle that matches the second drive groove into the second drive groove, and the operating handle presses the adjusting column into the first drive groove while entering the second drive groove, the straight surfaces of the check block and the check groove will abut against each other, and the operator will not be able to rotate the connecting column. This can lock the drive shaft. This not only reduces the situation where the drive shaft automatically closes without resistance, but also increases the number of operating steps for the operator, further reducing the probability of operator misoperation and further ensuring the work safety of subordinate operators. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the mechanical closing interlocking device of the high-voltage circuit breaker in the open state in this invention;

[0020] Figure 2 for Figure 1 An explosion diagram;

[0021] Figure 3 for Figure 1 Vertical sectional view;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 This is a schematic diagram of the unidirectional blocking mechanism in this invention;

[0025] Figure 7 This is a schematic diagram of the unlocking mechanism in this invention;

[0026] Figure 8 for Figure 1 Horizontal sectional view;

[0027] Figure 9 This is a horizontal cross-sectional view of the drive shaft and the closing and unlocking device in this invention.

[0028] In the diagram: 1. Housing; 11. Arc-shaped adjustment groove; 12. First mounting groove; 13. Arc-shaped guide groove; 14. Connecting groove; 2. Rotating seat; 3. Guide rod; 31. Ball bearing; 4. Drive shaft; 41. First drive groove; 5. Anti-accidental touch device; 51. One-way blocking mechanism; 511. One-way blocking block; 512. Adjusting rod; 513. First spring; 514. Stainless steel pull ring; 515. One-way positioning groove; 52. Unlocking mechanism; 5 21. Arc-shaped guide rod; 522. Guide plate; 523. First connecting rope; 524. Connecting frame; 525. One-way positioning block; 526. Second spring; 527. Guide post; 528. Third spring; 6. Closing and unlocking device; 61. Connecting post; 62. Second drive groove; 63. Adjusting post; 64. Connecting ring; 65. Check groove; 66. Second mounting groove; 67. Check block; 68. Second connecting rope; 69. Fourth spring. Detailed Implementation

[0029] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] like Figures 1-9As shown, a mechanical closing interlocking device for a high-voltage circuit breaker includes: a housing 1, an arc-shaped adjustment groove 11 formed on one side of the inner wall of the housing 1, a rotating seat 2 rotatably connected to the inner wall of the housing 1 and rotatably connected to the inside of the arc-shaped adjustment groove 11, a guide rod 3 slidably connected to the front end of the rotating seat 2 and slidably connected to the arc-shaped adjustment groove 11, and a drive shaft 4 rotatably connected to the inner side of the rotating seat 2; and an anti-accidental contact device 5, which is installed on the outside of the housing 1, with its rear end penetrating the housing 1 and extending into the inside of the arc-shaped adjustment groove 11. The enclosure 1 includes a closing and unlocking device 6, which is rotatably connected to the outside of the enclosure 1. The rear end of the closing and unlocking device 6 passes through the enclosure 1 and is fixedly connected to the drive shaft 4. The anti-accidental contact device 5 includes a one-way blocking mechanism 51 and an unlocking mechanism 52. The one-way blocking mechanism 51 is installed on the outside of the enclosure 1. The rear end of the one-way blocking mechanism 51 passes through the enclosure 1 and extends into the interior of the arc-shaped adjustment groove 11. The unlocking mechanism 52 is slidably connected to the inner bottom wall of the arc-shaped adjustment groove 11. The upper surface of the unlocking mechanism 52 contacts the lower surface of the guide rod 3.

[0031] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the interior of the housing 1 has a first mounting groove 12 that communicates with the arc-shaped adjustment groove 11. The one-way blocking mechanism 51 includes a one-way blocking block 511 that is slidably connected to the inner wall of the first mounting groove 12. The rear end of the one-way blocking block 511 passes through the first mounting groove 12 and extends into the interior of the arc-shaped adjustment groove 11. The horizontal cross-sectional shape of the one-way blocking block 511 is a right trapezoid. The inclined surface of the one-way blocking block 511 is located inside the arc-shaped adjustment groove 11. The inclined surface of the one-way blocking block 511 is located on the side away from the guide rod 3. The front end of the one-way blocking block 511 is fixedly connected to an adjusting rod 512. The front end of the adjusting rod 512 passes through the arc-shaped adjustment groove 11 and extends to the outside of the housing 1. A first spring 513 is sleeved on the surface of the adjusting rod 512. The two ends of the first spring 513 contact the side of the first mounting groove 12 away from the arc-shaped adjustment groove 11 and the front end of the one-way blocking block 511, respectively. By setting a one-way blocking mechanism 51, when an operator mistakenly rotates the drive shaft 4, the straight surface of the one-way blocking block 511 can pass through the blocking guide rod 3. The guide rod 3, through the rotating seat 2, prevents the drive shaft 4 from continuing to rotate, thereby preventing the drive shaft 4 from driving the subsequent operating mechanism to perform the closing operation of the high-voltage circuit breaker. This reduces the probability of misoperation by the operator and makes it safer for the maintenance personnel to repair the high-voltage circuit breaker, thus improving the anti-misoperation performance of the high-voltage circuit breaker closing interlocking device.

[0032] A stainless steel pull ring 514 is rotatably connected to the front end of the adjusting rod 512. The surface of the stainless steel pull ring 514 is smooth. The stainless steel pull ring 514 allows the operator to more easily pull the one-way blocking block 511 back into the first mounting slot 12, making the operation of the operator simpler.

[0033] A ball bearing 31 is embedded in the front end of the guide rod 3. The surface of the ball bearing 31 away from the guide rod 3 contacts the inner wall of the arc-shaped adjusting groove 11 away from the drive shaft 4. The ball bearing 31 and the inclined surface of the one-way blocking block 511 are on the same vertical plane. During the operation of the circuit breaker, when the guide rod 3 contacts the cross section of the one-way blocking block 511, the ball bearing 31 can reduce the friction between the guide rod 3 and the one-way blocking block 511, so that the guide rod 3 can quickly push the one-way blocking block 511 back into the first mounting groove 12, ensuring that the operator can perform the circuit breaker operation normally.

[0034] like Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the interior of the housing 1 has an arc-shaped guide groove 13, and the inner bottom wall of the arc-shaped adjustment groove 11 is connected to the arc-shaped guide groove 13. The interior of the housing 1 has a connecting groove 14, and the inner bottom wall of the first mounting groove 12 and the inner top wall of the arc-shaped guide groove 13 are respectively connected to the inner top wall and inner bottom wall of the connecting groove 14. The lower end of the one-way blocking block 511 has a one-way positioning groove 515. The unlocking mechanism 52 includes an arc-shaped guide rod 521 that is slidably connected to the inner wall of the arc-shaped guide groove 13. The lower end of the arc-shaped guide rod 521 is fixedly connected to a guide plate 522. The end of the guide plate 522 away from the arc-shaped guide rod 521 passes through the arc-shaped adjustment groove 11 and is connected to the lower end of the guide rod 3. The upper end of the arc-shaped guide rod 521 is fixedly connected to a first connecting rope 523. The upper end of the first connecting rope 523 passes through the arc-shaped guide groove 13 and extends into the interior of the connecting groove 14. The upper end of the connecting groove 14 is fixedly connected to a connecting frame 524 that slides in connection with the connecting groove 14. The upper end of the connecting frame 524 is fixedly connected to a one-way positioning block 525. The cross-sectional shapes of the one-way positioning block 525 and the one-way positioning groove 515 are both matching right-angled triangles. The inclined surfaces of the one-way positioning block 525 and the one-way positioning groove 515 both face the arc-shaped adjustment groove 11. The lower end of the connecting frame 524 is fixedly connected to a second spring 526 that contacts the connecting groove 14.

[0035] By setting the unlocking mechanism 52, when the guide rod 3 contacts the guide plate 522, the guide rod 3 presses down on the guide plate 522 during subsequent movement. The guide plate 522 drives the arc-shaped guide rod 521 to move down. The arc-shaped guide rod 521 pulls the first connecting rope 523. The first connecting rope 523 pulls down the connecting frame 524. The connecting frame 524 drives the one-way positioning block 525 to separate from the one-way positioning groove 515 and retract into the interior of the connecting groove 14. At this time, the one-way blocking block 511 and the first spring 513 simultaneously lose resistance. The first spring 513 pushes the one-way blocking block 511 quickly into the interior of the arc-shaped adjustment groove 11. At this time, even if the operator accidentally rotates the operating handle, the straight surface of the one-way blocking block 511 will block the guide rod 3 from rotating. This eliminates the need for the operator to manually push the one-way blocking block 511 into the interior of the arc-shaped adjustment groove 11, thereby improving the safety factor of the one-way blocking mechanism 51.

[0036] After the guide rod 3 separates from the guide plate 522, the third spring 528 quickly pushes back the arc-shaped guide rod 521. The arc-shaped guide rod 521 gradually loosens the first connecting rope 523. At this time, the resistance of the second spring 526 decreases, and the second spring 526 pushes the connecting frame 524 upward. The connecting frame 524 drives the one-way positioning block 525 back into the first mounting groove 12. When the worker pulls the one-way blocking block 511 into the first mounting groove 12 through the stainless steel pull ring 514, the corner of the one-way blocking block 511 contacts the inclined surface of the one-way positioning block 525, and the one-way positioning block 525 is squeezed back into the connecting groove 14 by the one-way blocking block 511. Inside, during the downward movement of the one-way positioning block 525, the second spring 526 is pressed down by the connecting frame 524. When the one-way positioning block 525 is aligned with the one-way positioning groove 515, both the one-way positioning block 525 and the second spring 526 lose resistance. The second spring 526 pushes the one-way positioning block 525 out of the connecting groove 14 through the connecting frame 524 and inserts the one-way positioning block 525 into the one-way positioning groove 515. At this time, the one-way positioning block 525 prevents the first spring 513 from driving the one-way blocking block 511 back into the arc-shaped adjusting groove 11 through the one-way positioning groove 515, so as to reduce the impact on the automatic tripping of the high-voltage circuit breaker in case of a fault. The second spring 526 is in a compressed state at this time. The second spring 526 is sleeved on the surface of the first connecting rope 523. The lower end of the guide plate 522 is fixedly connected to the guide post 527 which is slidably connected to the arc-shaped guide groove 13. The cross-sectional shape of the guide post 527 is arc-shaped. The center points of the arc-shaped adjustment groove 11, the arc-shaped guide groove 13, the arc-shaped guide rod 521 and the guide post 527 all coincide with the center point of the drive shaft 4. The lower end of the guide plate 522 is fixedly connected to the third spring 528 which contacts the inner bottom wall of the arc-shaped guide groove 13. The third spring 528 is sleeved on the surface of the guide post 527. The third spring 528 is in a compressed state at this time.

[0037] like Figure 8 and Figure 9As shown, the front end of the drive shaft 4 has a first drive groove 41. The closing and unlocking device 6 includes a connecting post 61 fixedly connected to the front end of the drive shaft 4. The front end of the connecting post 61 extends to the outside of the housing 1. The front end of the connecting post 61 is fixedly connected to a second drive groove 62 aligned with the first drive groove 41. An adjusting post 63 is slidably connected to the inner wall of the second drive groove 62. The adjusting post 63 has a cavity inside. The vertical cross-sectional shapes of the first drive groove 41, the second drive groove 62, and the adjusting post 63 are all matching squares. A connecting ring 64 is fitted on the surface of the connecting post 61 and fixedly connected to one side of the inner wall of the housing 1. A check groove 65 distributed in an annular pattern is opened on the inner side of the connecting ring 64. The surface of the connecting post 61 has a check groove 65 aligned with the second drive groove 41. The drive groove 62 is connected to the second mounting groove 66. The inner wall of the second mounting groove 66 is slidably connected to a check block 67 that engages with the adjacent check groove 65. The cross-sectional shapes of the check block 67 and the check groove 65 are both right-angled triangles. The inclined surface of the check groove 65 is set in the direction from the arc-shaped guide groove 13 to the connecting groove 14. The inclined surface of the check block 67 is in contact with the inclined surface of the adjacent check groove 65. A second connecting rope 68 is fixedly connected between the check block 67 and the adjusting column 63. A fourth spring 69 is sleeved on the surface of the second connecting rope 68. The two ends of the fourth spring 69 are in contact with the inner wall of the second mounting groove 66 near the adjusting column 63 and the end of the check block 67 near the adjusting column 63, respectively. The fourth spring 69 is in a compressed state at this time.

[0038] In use, when a superior operator needs to trip and repair a subordinate high-voltage circuit breaker, the operator simply inserts the matching operating handle into the second drive slot 62. The operator can then rotate the operating handle from the first mounting slot 12 towards the arc-shaped guide slot 13. The operating handle drives the connecting column 61 to rotate via the second drive slot 62, which in turn drives the drive shaft 4 to rotate. This causes the drive shaft 4 to drive the subsequent operating mechanism to trip the high-voltage circuit breaker. During rotation, the drive shaft 4 drives the rotating seat 2 to rotate, which in turn drives the guide rod 3 to rotate. The guide rod 3 rotates along the arc-shaped adjustment slot 11. When the guide rod 3 contacts the guide plate 522, it presses down on the guide plate 522 during subsequent movement. The guide plate 522 then drives the arc-shaped guide rod... 521 moves down, the arc-shaped guide rod 521 pulls the first connecting rope 523, the first connecting rope 523 pulls down the connecting frame 524, the connecting frame 524 drives the one-way positioning block 525 to separate from the one-way positioning groove 515 and retract into the interior of the connecting groove 14. At this time, the one-way blocking block 511 and the first spring 513 lose resistance at the same time. The first spring 513 pushes the one-way blocking block 511 quickly into the interior of the arc-shaped adjustment groove 11. At this time, even if the upper-level staff accidentally rotates the operating handle, the straight surface of the one-way blocking block 511 will block the guide rod 3 from rotating, so as to prevent the drive shaft 4 from driving the subsequent operating mechanism to perform the closing operation of the high-voltage circuit breaker. This reduces the probability of misoperation by the upper-level staff, making it safer for the lower-level maintenance personnel to maintain the high-voltage circuit breaker, so as to improve the anti-misoperation performance of the high-voltage circuit breaker closing interlocking device.

[0039] After the lower-level maintenance personnel have finished inspecting the lower-level high-voltage circuit breaker, the upper-level personnel first insert the operating handle that matches the second drive slot 62 into the second drive slot 62. As the operating handle goes deeper into the second drive slot 62, it presses the adjusting column 63 into the first drive slot 41. During the movement of the adjusting column 63, it pulls the second connecting rope 68, causing the second connecting rope 68 to drive the check block 67 to separate from the check slot 65. When the adjusting column 63 abuts against the inner wall of the first drive slot 41, the check block 67 is completely retracted into the second mounting slot 66. The upper-level personnel can then rotate the operating handle from the arc-shaped guide slot 13 towards the first mounting slot 12. The operating handle drives the connecting column 61 to rotate through the second drive slot 62. The connecting column 61 drives the drive shaft 4 to rotate. The drive shaft 4 synchronously drives the subsequent operating mechanism and rotating seat 2 to rotate. The rotating seat 2 drives the guide rod 3 to rotate. When the guide rod 3 abuts against the direct surface of the one-way blocking block 511... After the circuit breaker is in place, the superior personnel can reconfirm that the subordinate personnel are completely separated from the subordinate high-voltage circuit breaker. Once confirmed, the superior personnel pull out the stainless steel pull ring 514. The stainless steel pull ring 514 drives the adjusting rod 512 to move outward. The adjusting rod 512 drives the one-way blocking block 511 to separate from the guide rod 3 and retract into the first mounting groove 12. At this time, the guide rod 3 loses resistance, and the superior personnel can continue to rotate. The drive shaft 4 drives the subsequent operating mechanism to perform the closing operation of the high-voltage circuit breaker. Through the double closing interlocking structure composed of the one-way blocking mechanism 51 and the closing unlocking device 6, when the superior personnel need to perform the closing operation, the superior personnel need to unlock twice to successfully close the circuit breaker. This further reduces the probability of misoperation by the superior personnel, making it safer for the subordinate maintenance personnel to maintain the high-voltage circuit breaker, thereby improving the anti-misoperation performance of the high-voltage circuit breaker closing interlocking device.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical closing interlocking device for a high-voltage circuit breaker, characterized in that, The device includes a housing, an anti-accidental touch device, and a closing / unlocking device. One side of the inner wall of the housing has an arc-shaped adjustment groove. A rotating seat, rotatably connected to the inner wall of the housing and rotatably connected inside the arc-shaped adjustment groove, is connected to the front end of the rotating seat with a guide rod slidably connected to the arc-shaped adjustment groove. A drive shaft is fixedly connected to the inner side of the rotating seat. The anti-accidental touch device is installed on the outside of the housing, with its rear end penetrating the housing and extending into the arc-shaped adjustment groove. The closing / unlocking device is rotatably connected to the outside of the housing, with its rear end penetrating the housing and fixedly connected to the drive shaft. The anti-accidental touch device includes a one-way blocking mechanism and an unlocking mechanism. The one-way blocking mechanism is installed on the outside of the housing, with its rear end penetrating the housing and extending into the arc-shaped adjustment groove. The unlocking mechanism is slidably connected to the inner bottom wall of the arc-shaped adjustment groove, with its upper surface contacting the lower surface of the guide rod. The housing has a first mounting groove communicating with the arc-shaped adjustment groove inside. The one-way blocking mechanism includes a one-way blocking block slidably connected to the inner wall of the first mounting groove. The rear end of the one-way blocking block passes through the first mounting groove and extends into the interior of the arc-shaped adjustment groove. The horizontal cross-sectional shape of the one-way blocking block is a right trapezoid. The inclined surface of the one-way blocking block is located inside the arc-shaped adjustment groove. The inclined surface of the one-way blocking block is located on the side away from the guide rod. An adjustment rod is fixedly connected to the front end of the one-way blocking block. The front end of the adjustment rod passes through the arc-shaped adjustment groove and extends to the outside of the housing. A first spring is sleeved on the surface of the adjustment rod. The two ends of the first spring contact the inner wall of the first mounting groove away from the arc-shaped adjustment groove and the front end of the one-way blocking block, respectively.

2. The high-voltage circuit breaker mechanical closing interlocking device as described in claim 1, characterized in that, The front end of the adjusting rod is rotatably connected to a stainless steel pull ring, the surface of which is smooth.

3. The high-voltage circuit breaker mechanical closing interlocking device as described in claim 1, characterized in that, A ball bearing is embedded in the front end of the guide rod. The surface of the ball bearing away from the guide rod contacts the inner wall of the arc-shaped adjustment groove away from the drive shaft. The ball bearing and the inclined surface of the one-way blocking block are on the same vertical plane.

4. The high-voltage circuit breaker mechanical closing interlocking device as described in claim 1, characterized in that, The housing has an arc-shaped guide groove inside, and the inner bottom wall of the arc-shaped adjustment groove is connected to the arc-shaped guide groove. The housing also has a connecting groove inside, and the inner bottom wall of the first mounting groove and the inner top wall of the arc-shaped guide groove are respectively connected to the inner top wall and inner bottom wall of the connecting groove. The lower end of the one-way blocking block has a one-way positioning groove. The unlocking mechanism includes an arc-shaped guide rod slidably connected to the inner wall of the arc-shaped guide groove. A guide plate is fixedly connected to the lower end of the arc-shaped guide rod, and the end of the guide plate away from the arc-shaped guide rod passes through the arc-shaped adjustment groove and connects to the guide rod. The lower surface of the arc-shaped guide rod is in contact with the upper end of the arc-shaped guide rod. A first connecting rope is fixedly connected to the upper end of the arc-shaped guide groove and extends into the interior of the connecting groove. A connecting frame that is slidably connected to the connecting groove is fixedly connected to the upper end of the connecting frame. A one-way positioning block is fixedly connected to the upper end of the connecting frame. The cross-sectional shapes of the one-way positioning block and the one-way positioning groove are both matching right-angled triangles. The inclined surfaces of the one-way positioning block and the one-way positioning groove both face the arc-shaped adjustment groove. A second spring that contacts the connecting groove is fixedly connected to the lower end of the connecting frame.

5. A high-voltage circuit breaker mechanical closing interlocking device as described in claim 4, characterized in that, The second spring is in a compressed state at this time, and the second spring is sleeved on the surface of the first connecting rope.

6. A high-voltage circuit breaker mechanical closing interlocking device as described in claim 4, characterized in that, The lower end of the guide plate is fixedly connected to a guide post that is slidably connected to the arc-shaped guide groove. The cross-sectional shape of the guide post is arc-shaped. The center points of the arc-shaped adjustment groove, the arc-shaped guide groove, the arc-shaped guide rod, and the guide post all coincide with the center point of the drive shaft.

7. A high-voltage circuit breaker mechanical closing interlocking device as described in claim 6, characterized in that, The lower end of the guide plate is fixedly connected to a third spring that contacts the bottom wall of the arc-shaped guide groove. The third spring is sleeved on the surface of the guide post and is in a compressed state at this time.

8. The high-voltage circuit breaker mechanical closing interlocking device as described in claim 1, characterized in that, The drive shaft has a first drive groove at its front end. The closing and unlocking device includes a connecting post fixedly connected to the front end of the drive shaft. The front end of the connecting post extends to the outside of the housing. A second drive groove aligned with the first drive groove is fixedly connected to the front end of the connecting post. An adjusting post is slidably connected to the inner wall of the second drive groove. A cavity is formed inside the adjusting post. The vertical cross-sectional shapes of the first drive groove, the second drive groove, and the adjusting post are all matching squares. A connecting ring is fitted on the surface of the connecting post and fixedly connected to one side of the inner wall of the housing. A check groove distributed in a ring is formed on the inner side of the connecting ring. A second mounting groove communicating with the second drive groove is formed on the surface of the connecting post. A check block that engages with the adjacent check groove is slidably connected to the inner wall of the second mounting groove. The cross-sectional shapes of the check block and the check groove are matching right-angled triangles. The inclined surface of the check groove is set in the direction from the arc-shaped guide groove to the connecting groove. The inclined surface of the check block fits against the inclined surface of the adjacent check groove. A second connecting rope is fixedly connected between the check block and the adjusting post. A fourth spring is fitted on the surface of the second connecting rope.

9. A high-voltage circuit breaker mechanical closing interlocking device as described in claim 8, characterized in that, The two ends of the fourth spring are in contact with the inner wall of the second mounting groove near the adjusting column and the end of the check block near the adjusting column, respectively, and the fourth spring is in a compressed state at this time.

Images