Electric operating device of circuit breaker

Abstract

An electric operating device for a circuit breaker comprises a housing, a transmission mechanism is installed in the housing, a side wall of the housing is provided with a first sliding groove connected to the interior of the housing as an operating surface; a sliding rod is installed in the housing, a driving member controlled by the transmission mechanism is installed on the sliding rod, the driving member is provided with a closing operating part and an opening operating part, the driving member passes through the first sliding groove and extends out of the housing, the driving member moves along the sliding rod under the control of the transmission mechanism, and the closing operating part and the opening operating part respectively operate the handle of the circuit breaker to close and open. The electric operating device for a circuit breaker of the present invention has a sliding rod installed in the housing to provide a motion trajectory for the driving member, so that the driving member can operate the closing and opening of the circuit breaker through the closing operating part and the opening operating part during the process of moving along the sliding rod, and the closing operating part and the opening operating part can be widened according to the number of handles of the circuit breaker, so that one electric operating device can operate the handles of multiple circuit breakers.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an electric operating device for a circuit breaker. Background Art

[0002] Existing communication cabinets or intelligent control cabinets require both automatic and remote control capabilities. For ease of control, contactors are typically used. However, due to infrequent operation, contactors have the disadvantages of high energy consumption and high cost. Replacing the contactors with electrically operated circuit breakers requires an electric operating mechanism, which further increases costs. Therefore, it is essential to design a device that can, through other mounting devices, enable a single electric operating mechanism to control multiple handles of multiple miniature circuit breakers, thereby reducing energy consumption and costs in communication cabinets or intelligent control cabinets. Summary of the Invention

[0003] The object of the present invention is to overcome the defects of the prior art and provide an electric operating device for a circuit breaker with a simple structure and high reliability.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An electric operating device for a circuit breaker comprises a housing, a transmission mechanism being installed in the housing, a side wall of the housing being provided with a first slide groove communicating with the interior of the housing as an operating surface; a sliding rod being installed in the housing, a driving member controlled by the transmission mechanism being installed on the sliding rod, the driving member being provided with a closing operating portion and an opening operating portion, the driving member extending out of the housing through the first slide groove, the driving member moving along the sliding rod under the control of the transmission mechanism, the closing operating portion and the opening operating portion respectively operating the handle of the circuit breaker to close and open the circuit breaker.

[0006] Furthermore, the transmission mechanism includes a motor and a gear set connected to the motor, the gear set includes an opening and closing output gear, the opening and closing output gear is provided with a transmission shaft, and the driving member is provided with a linkage groove that cooperates with the transmission shaft. The motor drives the gear set to rotate, and the driving member slides on the sliding rod through the cooperation of the transmission shaft of the opening and closing output gear and the linkage groove of the driving member to operate the handle of the circuit breaker to close or open the circuit breaker.

[0007] Furthermore, the closing and opening operating gear includes a closing output gear and an opening output gear, and the transmission shaft on the closing and opening output gear includes a closing transmission shaft arranged on the closing output gear and an opening transmission shaft arranged on the opening output gear; the driving member includes a closing driving member and an opening driving member, and the closing driving member and the opening driving member are respectively provided with linkage grooves that cooperate with the closing transmission shaft and the opening transmission shaft.

[0008] Further, the closing drive member includes a first linkage member and a closing member, the first linkage member is installed on the sliding rod, the closing member is installed on the sliding rod and linked with the first linkage member, the first linkage member is provided with a first linkage groove that cooperates with the closing transmission shaft, and the closing member is provided with a closing operating part; and / or the opening drive member includes a second linkage member and an opening member, the second linkage member is installed on the sliding rod, the opening member is installed on the sliding rod and linked with the second linkage member, the second linkage member is provided with a second linkage groove that cooperates with the opening transmission shaft, and the opening member is provided with an opening operating part.

[0009] Furthermore, the first linkage groove and the second linkage groove each include an open end and a closed end; the closed end of the first linkage groove cooperates with the closing transmission shaft to drive the first linkage member to move, and the open end of the first linkage groove is used to enable the closing transmission shaft to rotate out after the closing is completed to achieve separation from the first linkage member; the closed end of the second linkage groove cooperates with the opening transmission shaft to drive the second linkage member to move, and the open end of the second linkage member is used to enable the opening transmission shaft to rotate out after the opening is completed to achieve separation from the second linkage member.

[0010] Furthermore, the open end of the first linkage groove is offset from the open end of the second linkage groove, and the direction from the open end of the first linkage groove to the closed end is opposite to the direction from the open end of the second linkage groove to the closed end.

[0011] Furthermore, the first linkage groove includes a first straight section and a first arc section that are connected, the first straight section is perpendicular to the sliding rod, the closed end is located at the end of the first straight section, and the open end is located at the end of the first arc section;

[0012] The second linkage groove includes a second straight section and a second arc section that are connected in sequence. The second straight section is parallel to the sliding rod. The second arc section is close to a semicircular arc shape. The closed end is located at the end of the second arc section. One side of the second arc section is a circular arc side wall, and the other side is a straight side wall. The open end is located at the end of the second straight section.

[0013] Furthermore, the closing output gear and the opening output gear are both elliptical gears; an elastic buffer is provided between the first linkage member and the closing member, and / or an elastic buffer is provided between the second linkage member and the opening member.

[0014] Furthermore, the gear set also includes a primary gear, a secondary gear and a tertiary gear; the primary gear is engaged with the motor through a worm, the secondary gear is engaged with the primary gear, and the tertiary gear is engaged with the secondary gear. The tertiary gear is provided with a closing output gear or an opening output gear, and the closing output gear is engaged with the opening output gear.

[0015] Furthermore, the side wall of the shell opposite to the operating surface serves as a connecting surface, and a moving device for driving the shell to move is installed on the connecting surface.

[0016] Furthermore, the first linkage member is formed by sequentially connecting the first linkage wall, the third linkage wall, and the second linkage wall to form a U-shaped structure with an opening facing the first sliding groove; the first linkage groove is provided on the third linkage wall, and the first and second linkage walls facing each other are provided with a through hole for the sliding rod to pass through; the closing member is provided inside the first linkage member, and the closing member is formed by sequentially connecting the first side wall, the first connecting wall, and the second side wall to form a U-shaped structure; the first and second side walls facing each other are provided with a through hole for the sliding rod to pass through; an elastic buffer is sleeved on the sliding rod between the second side wall and the first linkage member;

[0017] The second linkage member is connected in sequence by the fourth linkage wall, the sixth linkage wall and the fifth linkage wall to form a U-shaped structure; the fourth linkage wall and the fifth linkage wall are opposite to each other and are provided with a through hole for the sliding rod to pass through, the second linkage groove is provided on the fourth linkage wall, and the shutter member is provided in the second linkage member, and the shutter member is connected in sequence by the third side wall, the second connecting wall and the fourth side wall to form a U-shaped structure, and the third side wall and the fourth side wall are opposite to each other and are provided with a through hole for the sliding rod to pass through, the shutter member is located between the fourth linkage wall and the fifth linkage wall, and an elastic buffer member is sleeved on the sliding rod located between the fourth side wall and the fourth linkage wall.

[0018] Furthermore, a connecting groove for connecting to the closing member is provided on the first linkage wall, and the first connecting wall passes through the connecting groove of the first linkage member so that the second side wall of the closing member is located inside the first linkage member; a closing operating portion is provided on the first side wall, and the closing operating portion extends out of the first sliding groove and is formed by extending from the middle edge of the first side wall toward the first sliding groove, and the end of the closing operating portion is bent downward;

[0019] The third side wall is provided with a trip operating part, which is formed integrally by the third side wall. The trip operating part is in a U-shaped body with an open end facing upward. The U-shaped body has a long side wall for connecting with the third side wall and a short side wall for contacting the handle of the circuit breaker.

[0020] Furthermore, the gear set further includes a control gear; a raised trigger platform is provided on the control gear, and a plurality of position identification switches are arranged at intervals on a circumference coaxial with the control gear and cooperate with the trigger platform, the plurality of position identification switches including an initial position identification switch, a closing position identification switch, and an opening position identification switch;

[0021] When closing the circuit breaker, the motor drives the closing output gear and the control gear to rotate. The closing output gear rotates in the closing direction and causes the closing operating unit to operate the circuit breaker handle to close the circuit breaker through the closing transmission shaft. When the trigger station triggers the closing position identification switch, the motor rotates in the opposite direction. When the trigger station triggers the initial position identification switch, the closing operating unit returns to the initial position and the motor stops rotating.

[0022] When opening, the motor drives the opening output gear and the control gear to rotate. The opening output gear rotates in the opening direction and causes the opening operating part to operate the circuit breaker handle to open through the opening transmission shaft. When the trigger station triggers the opening position identification switch, the motor rotates in the opposite direction. When the trigger station triggers the initial position identification switch, the opening operating part returns to the initial position and the motor stops rotating.

[0023] The electric operating device of the circuit breaker of the present invention has a sliding rod installed in the housing to provide a motion trajectory for the driving member, so that the driving member can operate the closing and opening of the circuit breaker through the closing operating part and the opening operating part during the movement along the sliding rod. It is arranged opposite to the handle of the circuit breaker, which facilitates the operation of the handle of the multi-pole circuit breaker.

[0024] In addition, by setting up a moving device in conjunction with the moving track, it is possible to operate the handles of multiple circuit breakers. The closing and opening operating parts can be widened according to the number of circuit breaker handles, so that a single electric operating device can operate the handles of multiple-pole circuit breakers.

[0025] In addition, a linkage groove with an open opening is provided on the driving member, which can be rotated in and out when cooperating with the transmission shaft of the opening and closing output gear, thereby reducing the malfunction caused by the cooperation between the transmission shaft and the driving member during opening and closing; the driving member is a closing driving member and an opening driving member that are independent of each other, which respectively cooperate with the closing output gear and the opening output gear of the transmission mechanism to operate the handle of the circuit breaker to close and open. This structure can be set on the front of the circuit breaker handle and is suitable for installation in a cabinet with limited horizontal space. At the same time, it also avoids tilting during the operation of the circuit breaker handle, causing the circuit breaker contacts to be out of sync; the opening and closing output gear of the transmission mechanism is an elliptical gear made of metal material. The use of this non-circular gear can achieve a periodically changing transmission ratio, has a compact structure, good rigidity and can ensure relatively smooth transmission. The metal material is conducive to extending the service life; multiple circuit breakers are operated by installing a moving device on the shell and moving it under the drive of the moving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the electric operating device of the circuit breaker of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the connection surface of the electric operating device of the circuit breaker of the present invention;

[0028] Figure 3 Schematic diagram of the initial state of the electric operating device of the circuit breaker of the present invention;

[0029] Figure 4 This is a schematic diagram of the electric operating device of the circuit breaker of the present invention when it is closed;

[0030] Figure 5This is a schematic diagram of the electric operating device of the circuit breaker of the present invention when it is open;

[0031] Figure 6 Schematic diagram of the internal structure of the electric operating device of the circuit breaker of the present invention (split type);

[0032] Figure 7 Schematic diagram of the internal structure of the electric operating device of the circuit breaker of the present invention (split type);

[0033] Figure 8 Schematic diagram of the internal structure of the electric operating device of the circuit breaker of the present invention (split type, excluding the first bracket);

[0034] Figure 9 2. It is a schematic structural diagram of a second bracket of the electric operating device of the circuit breaker of the present invention;

[0035] Figure 10 Schematic diagram of the transmission mechanism of the electric operating device of the circuit breaker of the present invention (initial state);

[0036] Figure 11 Schematic diagram of the transmission mechanism of the electric operating device of the circuit breaker of the present invention (closed state);

[0037] Figure 12 Schematic diagram of a closing drive component of an electric operating device of a circuit breaker of the present invention;

[0038] Figure 13 is a schematic diagram of a first linkage member of an electric operating device of a circuit breaker of the present invention;

[0039] Figure 14 Schematic diagram of the opening drive component of the electric operating device of the circuit breaker of the present invention;

[0040] Figure 15 yes Figure 14 Schematic diagram of the decomposition structure;

[0041] Figure 16 Schematic diagram of the trip member of the electric operating device of the circuit breaker of the present invention (with a second linkage slot);

[0042] Figure 17 Schematic diagram of the driving member of the electric operating device of the circuit breaker of the present invention (integrated);

[0043] Figure 18 Schematic diagram of the linkage parts of the electric operating device of the circuit breaker of the present invention (integrated);

[0044] Figure 19 Schematic diagram of the operating member and buffer member of the electric operating device of the circuit breaker of the present invention;

[0045] Figure 201. It is a schematic diagram of the installation of the driving member of the electric operating device of the circuit breaker of the present invention (integrated);

[0046] Figure 21 Schematic diagram of the structure of the control gear of the electric operating device of the circuit breaker of the present invention (on the side close to the second bracket);

[0047] Figure 22 It is a structural schematic diagram of the control gear of the electric operating device of the circuit breaker of the present invention (on the side close to the first bracket). DETAILED DESCRIPTION

[0048] The following is combined with Figures 1 to 20 The following embodiments are provided to further illustrate the specific implementation of the electric operating device for a circuit breaker of the present invention. The electric operating device for a circuit breaker of the present invention is not limited to the description of the following embodiments.

[0049] like Figure 1-5 As shown, an electric operating device for a circuit breaker has a side wall of its housing 1 serving as an operating surface 11 and provided with a first slide groove 101. The first slide groove 101 is directly opposite the handle 5 of the circuit breaker. A driving member for driving the handle 5 of the circuit breaker to open or close is installed in the housing 1. A sliding rod 102 is installed in the housing 1, and the driving member is installed on the sliding rod 102. The driving member can extend out of the housing 1 from the first slide groove 101 and move along the first slide groove 101 under the operation of the transmission mechanism in the housing 1 to operate the circuit breaker handle 5 to open or close.

[0050] The driving member includes a closing operating part 31a and an opening operating part 31b. Figure 3 As shown, in the initial state, a space is reserved between the closing operating part 31a and the opening operating part 31b of the driving member. The closing operating part 31a is located below the opening operating part 31b, and the handle 5 of the circuit breaker extends into the space. Figure 4 As shown, when the circuit breaker needs to be closed, the transmission mechanism drives the closing operating part 31a to move upward along the first sliding groove 101, pushing the handle 5 of the circuit breaker upward to close the circuit breaker; Figure 5As shown, when the circuit breaker needs to be opened, the transmission mechanism drives the opening operating portion 31b to move downward, pushing the circuit breaker handle 5 downward to open. It should be noted that the upper and lower settings are relative, and it is also possible that the opening operating portion 31b is located below the closing operating portion 31a, and the opening operating portion 31b moves upward to push the circuit breaker handle 5 to open. Preferably, in the initial state, that is, when no opening or closing operations are performed, the closing operating portion 31a and the opening operating portion 31b do not contact the circuit breaker handle 5, and can automatically return to the initial state to await the next instruction after the closing driver or the opening driver drives the circuit breaker handle. The space reserved between the closing driver and the opening driver prevents the closing driver and the opening driver from contacting the handle 5 in the initial state. After the closing driver or the opening driver drives the handle 5, the closing driver and the opening driver can return to the initial state, preventing the closing driver or the opening driver from malfunctioning and causing damage to the circuit breaker. Specifically, when the closing drive operates the handle 5 of the circuit breaker to close, it returns to the initial state, and when the opening drive operates the handle 5 of the circuit breaker to open, it returns to the initial state. This can prevent the closing drive from interfering with the opening action of the opening drive, and the opening drive from interfering with the closing action of the closing drive. One implementation method is to provide a position identification switch in the transmission mechanism. After the position identification switch is triggered, the transmission mechanism is controlled by the control circuit to operate the closing drive or the opening drive to return to the initial position.

[0051] This electric operating device is arranged on the front of the circuit breaker handle 5, rather than on the side wall of the circuit breaker as is conventionally done, and can be used in cabinets with limited lateral space. It can also avoid tilting of the circuit breaker handle 5 during operation, which could cause the circuit breaker contacts to become out of sync, or avoid the need to configure a separate electric operating device for each pole of the circuit breaker.

[0052] As an embodiment, the widths of the closing operating portion 31a and the opening operating portion 31b can be widened as needed, and the handles 5 of the multi-pole circuit breaker can be driven to operate simultaneously.

[0053] Preferably, as an embodiment, Figure 3 As shown, a moving device 6 is also provided on the electric operating device, and the side wall opposite to the operating surface 11 is installed with the moving device 6 for displacement as a connecting surface 12. Figure 2 As shown, the electric operating device is installed on a movable track (not shown in the figure) through a movable device 6. The movable device 6 can drive the electric operating device to move along the movable track to correspond to the handles 5 of different circuit breakers, so as to drive different circuit breakers to perform different closing and opening actions.

[0054] As an example, Figure 6 、 7As shown, a bracket is provided within the housing 1 of the circuit breaker's electric operating device, dividing the space within the housing 1 into a drive space and a transmission space. The bracket specifically includes a first bracket 103 and a second bracket 104 spaced apart. The space between the first bracket 103 and the second bracket 104 serves as the transmission space for mounting the transmission device, and the space between the first bracket 103 and the operating surface 11 serves as the drive space for mounting the driver. Preferably, a sliding rod 102 is installed within the drive space. The driver is slidably mounted on the sliding rod 102 and moves along the first slide groove 101 on the sliding rod 102 under the operation of the transmission mechanism. The first bracket 103 and the second bracket 104 divide the space within the housing 1 into two relatively independent sections, providing a working area for the transmission mechanism and the driver, thereby preventing performance instability caused by mutual interference between the various functional components.

[0055] Preferably, the transmission mechanism includes a motor 201 and a gear set connected to the motor 201. The gear set includes an opening and closing output gear, which is provided with a transmission shaft. The driving member is provided with a linkage groove that cooperates with the transmission shaft. The motor 201 drives the gear set to rotate. Through the cooperation between the transmission shaft of the opening and closing output gear and the linkage groove of the driving member, the driving member slides on the sliding rod 102 to operate the handle 5 of the circuit breaker to close or open the circuit breaker. The gear set is installed in the transmission space between the first bracket 103 and the second bracket 104.

[0056] Preferably, the transmission ratio of the opening and closing output gear varies periodically, providing the driver with a periodically varying driving force and operating speed. The periodic transmission ratio of the opening and closing output gear provides the driver with a larger driving force in the early stage of closing, and provides the driver with a larger closing speed in the later stage of closing, thereby reducing contact burning or circuit breaker failure. A preferred solution is that the opening and closing output gear is preferably an elliptical gear, so that a suitable transmission force and lever ratio can be set, so that the driver obtains a periodically varying driving force and operating speed during closing and opening, avoiding contact burning or circuit breaker failure. The gear pair composed of such non-circular gears can achieve a periodically varying transmission ratio, has a compact structure, good rigidity, and can ensure relatively smooth transmission. Obviously, the opening and closing output gear can also be a circular gear, but it cannot obtain a periodic transmission ratio.

[0057] exist Figure 10 、 11In the embodiment, the opening and closing output gears include a closing output gear 205 and an opening output gear 206. The transmission shafts on the opening and closing output gears include a closing transmission shaft 205a provided on the closing output gear 205 and an opening transmission shaft 206a provided on the opening output gear 206. The closing transmission shaft 205a is used to operate the closing operating portion 31a of the driving member to close the handle 5 of the circuit breaker, and the opening transmission shaft 206a is used to operate the opening operating portion 31b of the driving member to open the handle 5 of the circuit breaker. Preferably, the closing output gear 205 and the opening output gear 206 are engaged with each other and can be driven and controlled simultaneously.

[0058] The closing output gear 205 and the opening output gear 206 are preferably elliptical gears made of metal material, and the pitch curve of the elliptical gear is an ellipse or a high-order ellipse. Since the central angle corresponding to each tooth of the elliptical gear is not always equal, the closing output gear 205 and the opening output gear 206 rotate non-uniformly during the meshing rotation process, and this non-uniform rotation presents periodic speed changes. Based on this feature, a suitable transmission force and lever ratio are designed so that the closing operating part 31a can obtain a larger closing driving force in the early stage of closing and a faster closing speed in the later stage of closing. In the early stage of closing, that is, from the beginning of closing to the period when closing is about to begin, the long side of the ellipse of the opening output gear 206 contacts and cooperates with the short side of the ellipse of the closing output gear 205, so that the closing operating part 31a obtains a larger closing driving force; in the late stage of closing, that is, from the period when closing is about to begin to the period when closing is completely completed, the short side of the ellipse of the opening output gear 206 contacts and cooperates with the long side of the ellipse of the closing output gear 205, so that the closing operating part 31a obtains a faster closing speed; during the rotation process, the center distance is fixed to ensure that the closing output gear 205 and the opening output gear 206 always maintain good meshing. At the same time, the transmission force and the lever cooperate with the action process of the circuit breaker, so that the closing moment is fast, that is, the closing force in the early stage of closing is increased at the moment when the moving contact contacts the static contact. The gear pair consisting of non-circular gears for closing output gear 205 and opening output gear 206 achieves a cyclically varying transmission ratio, resulting in a compact structure, good rigidity, and relatively smooth transmission. The metal elliptical gears also extend their service life. Clearly, closing output gear 205 and opening output gear 206 could also be circular gears, but this would not achieve a cyclical transmission ratio.

[0059] Specifically, the gear set further includes a primary gear 202, a secondary gear 203 and a tertiary gear 204; the motor 201 is meshed with the primary gear 202 through a worm, the primary gear 202 is meshed with the secondary gear 203, the secondary gear 203 is meshed with the tertiary gear 204, and the tertiary gear 204 is equipped with a switching output gear; Figure 8 、 10As shown in Figure 11, the three-stage gear 204 is provided with a closing output gear 205 and an opening output gear 206. The closing output gear 205 and the opening output gear 206 are meshed with each other. The closing output gear 205 and the three-stage gear 204 are driven by the same rotating shaft. The rotating shaft of the closing output gear 205 is eccentrically set, that is, the rotating shaft of the closing output gear 205 is not set at the center of the closing output gear 205. The opening output gear 206 is meshed with the closing output gear 205. The rotating shaft of the opening output gear 206 is eccentrically set, that is, the rotating shaft of the opening output gear 206 is not set at the center of the opening output gear 206. A closing transmission shaft 205a is provided on the closing output gear 205, and an opening transmission shaft 206a is provided on the opening output gear 206. The eccentric setting enables the rotation centers of the two elliptical gears to maintain a certain distance. Of course, the three-stage gear 204 and the opening output gear 206 may also be driven by the same rotating shaft, and the opening output gear 206 drives the closing output gear 205 to rotate.

[0060] like Figure 21 、 22 As shown, the transmission mechanism also includes a control gear 207 and a plurality of position identification switches. The control gear 207 is provided with a protruding trigger platform 207a. The plurality of position identification switches are fixedly installed in the housing 1 and are spaced apart on the circumference coaxial with the control gear 207, preferably located on one side close to the second bracket 104 (see the second bracket 104). Figure 6 、 7 ), the multiple position identification switches are used to cooperate with the trigger station 207a to provide position signals, controlling the forward, reverse, and stop rotation of the motor. The multiple position identification switches include an initial position identification switch 208a, a closing position identification switch 208b, and an opening position identification switch 208c. The control gear 207 is mounted on the same rotating shaft as the opening output gear 206, and the rotation of the opening output gear 206 drives the control gear 207 to rotate. The motor 201 sequentially drives the closing output gear 205, the opening output gear 206, and the control gear 207 to rotate.

[0061] Closing process: When the motor 201 drives the closing output gear 205 to rotate in the closing direction under the transmission of the first gear 202, the second gear 203, and the third gear 204, take the closing output gear rotating counterclockwise as an example (see Figure 22 direction), at this time, the trip output gear 206, the control gear 207 and the triggering platform 207a all rotate clockwise (see Figure 21The triggering platform 207a rotates from the initial position identification switch 208a to the closing position identification switch 208b. The closing output gear 205 causes the closing operating part 31a of the closing driving member to operate the handle 5 of the circuit breaker to close the circuit breaker via the closing transmission shaft 205a. When the triggering platform 207a triggers the closing position identification switch 208b, the motor 201 is controlled to rotate in the reverse direction toward the opening direction. When the triggering platform 207a triggers the initial position identification switch 208a, the closing operating part 31a is controlled to return to the initial position, and the motor 201 stops rotating.

[0062] Opening process: When the motor 201 drives the closing output gear 205 to rotate in the opening direction under the transmission of the first gear 202, the second gear 203, and the third gear 204, take the clockwise rotation of the closing output gear 205 as an example (see Figure 22 direction), at this time, the trip output gear 206, the control gear 207 and the triggering platform 207a all rotate counterclockwise (see Figure 21 The direction of rotation is clockwise), the triggering platform 207a rotates from the initial position identification switch 208a to the opening position identification switch 208c, the opening output gear 206 rotates in the opening direction and causes the opening operating part 31b to operate the handle 5 of the circuit breaker to open the circuit breaker through the opening transmission shaft 206a. When the triggering platform 207a triggers the opening position identification switch 208c, the control motor 201 rotates in the opposite direction toward the closing direction. When the triggering platform 207a triggers the initial position identification switch 208a, the opening operating part 31b is controlled to return to the initial position.

[0063] The present invention provides closing, opening and initial position signals through multiple position identification switches to control the forward and reverse rotation of the motor. The position identification switch and the control motor 201 can be connected to the control circuit respectively. The control circuit can be implemented by an electric circuit or by a single-chip microcomputer. The control circuit can be set inside the shell 1 or outside the shell 1 and controlled remotely.

[0064] In one embodiment, the transmission mechanism is provided with a transmission shaft, and the driving member includes a closing driving member and an opening driving member, each of which is provided with a closing operating portion 31a and an opening operating portion 31b, respectively. The closing driving member and the opening driving member are each provided with a linkage groove, each of which has openings in opposite directions for periodic engagement and disengagement with the transmission shaft of the transmission mechanism. Preferably, the driving member includes a linkage member connected to the transmission mechanism, and the linkage member is provided with a linkage groove for connection to the transmission shaft.

[0065] The linkage groove of the driving member can convert the circular motion of the closing and opening output gear into linear motion. Under the cooperation of the linkage groove and the transmission shaft, the driving member performs linear motion in the first sliding groove 101. The closing operating part 31a and the opening operating part 31b of the driving member respectively operate the handle 5 of the circuit breaker to close and open the circuit breaker. The linear motion of the driving member is preferably performed along the sliding rod 102. Specifically, as Figure 8 As shown, the linkage groove of the closing drive member is the first linkage groove 30a, and the linkage groove of the opening drive member is the second linkage groove 30c. When the transmission shaft cooperates with the first linkage groove 30a on the closing drive member, the transmission shaft is separated from the second linkage groove 30c of the opening drive member to prevent the opening drive member from malfunctioning; when the transmission shaft cooperates with the second linkage groove 30c of the opening drive member, the transmission shaft is separated from the first linkage groove 30a of the closing drive member to prevent the closing drive member from malfunctioning.

[0066] Specifically, such as Figure 8 、 13 As shown in Figures 1 and 2, the transmission shaft includes a closing transmission shaft 205a and an opening transmission shaft 206a. The first linkage groove 30a and the second linkage groove 30c each include a closed end and an open end. The closed end of the first linkage groove 30a cooperates with the closing transmission shaft 205a to drive the first linkage member to move. The open end of the first linkage groove 30a is used to enable the closing transmission shaft 205a to rotate out after the closing is completed so as to achieve separation from the first linkage member, thereby preventing the closing operating part 31a from malfunctioning when opening. Similarly, the closed end of the second linkage groove 30c cooperates with the opening transmission shaft 206a to drive the second linkage member to move. The open end of the second linkage member is used to enable the opening transmission shaft 206a to rotate out after the opening is completed so as to achieve separation from the second linkage member, thereby preventing the opening operating part 31b from malfunctioning when closing.

[0067] Specific examples Figure 7 、 8As shown, the driving member includes a linkage member and an operating member driven by the linkage member. The transmission mechanism is connected to the linkage member, and the linkage member is installed on the sliding rod 102. The operating member is linked to the linkage member. A linkage groove is provided on the linkage member for connecting to the transmission shaft. The operating member is provided with a closing operating part 31a and an opening operating part 31b. The linkage member specifically includes a first linkage member and a second linkage member. The first linkage member is provided with a first linkage groove 30a that periodically cooperates with the closing transmission shaft 205a, and the second linkage member is provided with a second linkage groove 30c that periodically cooperates with the opening transmission shaft 206a. The operating member includes a closing member provided with a closing operating part 31a and an opening member provided with an opening operating part 31b. Preferably, an elastic buffer member 4 is provided between the linkage member and the operating member. The elastic buffer member 4 is used to absorb the closing and opening margins to prevent the closing operating part 31a and the opening operating part 31b from hard impacting the handle 5, so that the handle 5 cannot be accurately pushed into place or even broken. Of course, the elastic buffer member 4 may not be provided at all, or may be provided only on the closing drive member and may be omitted on the opening drive member.

[0068] Specific as Figure 12 、 14 As shown, the driving member includes a closing driving member provided with a closing operating part 31a and an opening driving member provided with an opening operating part 31b, and the closing member and the opening member serve as operating members driven by the linkage member. Specifically, the closing drive member includes a first linkage member and a closing member, the first linkage member is installed on the sliding rod 102, the closing member is installed on the sliding rod 102 and linked with the first linkage member, the first linkage member is provided with a first linkage groove 30a that cooperates with the closing transmission shaft 205a, the closing member is provided with a closing operating part 31a for operating the handle 5 of the circuit breaker, and an elastic buffer member 4 is preferably provided between the first linkage member and the closing member; the opening drive member includes a second linkage member and an opening member, the second linkage member is installed on the sliding rod 102, the opening member is installed on the sliding rod 102 and linked with the second linkage member, the second linkage member is provided with a second linkage groove 30c that cooperates with the opening transmission shaft 206a, the opening member is provided with an opening operating part 31b for operating the handle 5 of the circuit breaker, and an elastic buffer member 4 is preferably provided between the second linkage member and the opening member.

[0069] The closing drive and the opening drive are independently arranged, and the closing drive and the opening drive are driven by the transmission mechanism to operate the handle 5 for closing and opening the circuit breaker. Figure 6As shown, a compression spring 7 is provided between the closing drive and the opening drive, and the compression spring 7 is used to assist in coordinating the resetting of the closing drive and the opening drive, and can also reduce the effect of the gap when the closing drive and the opening drive cooperate; the linear motion made by the closing drive during the closing process causes the compression spring 7 to deform and store energy, and when the closing is completed, the elastic force of the compression spring 7 provides an auxiliary driving force for the closing drive to return to the initial position; similarly, the linear motion made by the opening drive during the opening process causes the compression spring 7 to deform and store energy, and the elastic force of the compression spring 7 provides an auxiliary driving force for the opening drive to return to the initial position. Preferably, a compression spring 7 is sleeved on the sliding rod 102 between the closing drive and the opening drive, which can serve as a compression spring 7 and can also provide driving force for resetting the first linkage member and the second linkage member, thereby ensuring the resetting speed.

[0070] like Figure 13 As shown, the first linkage member is connected in sequence by the first linkage wall 301, the third linkage wall 303 and the second linkage wall 302 to form a U-shaped structure with an opening facing the first slide groove 101. The first linkage wall 301 and the second linkage wall 302 are opposite to each other and are provided with a through hole for the sliding rod 102 to pass through. The first linkage wall 301 is provided with a connecting groove 30b for connecting the closing member; the third linkage wall 303 is provided with a first linkage groove 30a, the inner diameter of the first linkage groove 30a is substantially equal, the first linkage groove 30a has a closed end and an open end, and the first linkage groove 30a includes a connecting groove 30b. The first straight section and the first arc section, the first straight section is perpendicular to the sliding rod 102, the first arc section is in the shape of a quarter arc, the closed end is located at the end of the first straight section, the first straight section is parallel to the first linkage wall 301, the open end is located at the end of the first arc section, and its opening is set at the connection between the second linkage wall 302 and the third linkage wall 303. When the motor 201 rotates to drive the closing output gear 205 of the transmission mechanism to rotate in the closing direction, the closing transmission shaft 205a rotates from the open end of the first linkage groove 30a into the first linkage groove 30a and rotates along the first linkage groove 30a.

[0071] like Figure 12As shown, the closing member is preferably smaller than the first linkage member and is arranged inside the first linkage member. The closing member is connected in sequence by the first side wall 311, the first connecting wall 315 and the second side wall 312 to form a U-shaped structure. The first side wall 311 and the second side wall 312 opposite to each other are provided with through holes for passing the sliding rod 102. The first connecting wall 315 passes through the connecting groove 30b of the first linkage member so that the second side wall 312 of the closing member is located inside the first linkage member. An elastic buffer member 4 is sleeved on the sliding rod 102 between the second side wall 312 and the first linkage member. The first side wall 311 or the second side wall 312 is provided with a closing operating part 31a for operating the circuit breaker handle 5 to close the circuit breaker. The closing operating part 31a extends out of the first slide groove 101 and is preferably formed by extending from the middle edge of the first side wall 311 toward the first slide groove 101. The end of the closing operating part 31a is bent downward.

[0072] like Figure 15 As shown, the second linkage member is connected in sequence by the fourth linkage wall 304, the sixth linkage wall 306, and the fifth linkage wall 305 to form a U-shaped structure. The fourth linkage wall 304 and the fifth linkage wall 305 are provided with a through hole for the sliding rod 102 to pass through. The sixth linkage wall 306 is provided with an arc-shaped second linkage groove 30c. The opening drive shaft 206a extends into the second linkage groove 30c to drive the second linkage member to move. The second linkage groove 30c includes a second straight section and a second arc section that are connected in sequence. The second straight section is parallel to the sliding rod 102. The second arc section is approximately semicircular in shape. The closed end is located at the end of the second arc section. One side of the second arc section is an arc sidewall and the other side is a straight sidewall. The open end is located at the end of the second straight section. The opening of the open end is set at the connection between the fourth linkage wall 304 and the sixth linkage wall 306. When the opening transmission shaft 206a rotates from the open end and moves along the arc side wall to the closed end, it drives the second linkage member to move, and then rotates out along the straight side wall to separate from the second linkage member to prevent malfunction when closing the switch.

[0073] The trip member is disposed within the second linkage member. The trip member is sequentially connected by a third side wall 313, a second connecting wall 316, and a fourth side wall 314 to form a U-shaped structure. Opposing third and fourth side walls 313, 314 are provided with through-holes for the sliding rod 102 to pass through. A trip operating portion 31b for operating the circuit breaker handle 5 to trip the circuit breaker is provided on either the third or fourth side wall 313, 314. The trip operating portion 31b is preferably integrally formed by the third side wall 313. The trip operating portion 31b is generally an upwardly open U-shaped body, comprising a long side wall for connecting to the third side wall 313 and a short side wall for contacting the circuit breaker handle 5. The trip member is located between the fourth and fifth linkage walls 304, 305. An elastic buffer 4, preferably a spring, is sleeved on the sliding rod 102 located between the fourth and fourth linkage walls 314.

[0074] In particular, as an implementation example Figure 6 、 16 As shown, the second linkage groove 30c can be set on the second connecting wall 315 of the opening member, and no linkage member is set. The opening member is driven by the opening transmission shaft 206a through the second linkage groove 30c to move linearly in the first sliding groove 101. At this time, the opening of the open end of the second linkage groove 30c is set at the connection between the third side wall 313 and the second connecting wall 316. Therefore, the second linkage member and the elastic buffer member 4 set between the second linkage member and the opening member can be omitted. Figure 6 The opening member in the embodiment is obtained by omitting the second linkage member and the elastic buffer member 4.

[0075] It should be noted that since the closing output gear 205 and the opening output gear 206 are meshed with each other, their rotation directions are opposite, so the open ends of the first linkage groove 30a and the second linkage groove 30c are offset relative to each other, and their closed ends are offset relative to each other. The direction from the open end to the closed end of the first linkage groove 30a is opposite to the direction from the open end to the closed end of the second linkage groove 30c, and the rotation directions of the two are opposite. Figure 8 As shown, the closed end of the first linkage groove 30a is on the left side of the first linkage member, and the closed end of the second linkage groove 30c is on the right side of the second linkage member; the open end of the first linkage groove 30a is located at the upper right side of the first linkage member, and the open end of the second linkage groove 30c is located at the lower left side of the second linkage member.

[0076] like Figure 17-20The illustrated embodiment utilizes a linkage member and an operating member, with the closing operating portion 31a and the opening operating portion 31b forming an integrated structure. The driving member comprises a linkage member and an operating member, which cooperate with the transmission mechanism and are mounted on the sliding rod 102. The operating member is mounted on the sliding rod 102 and in tandem with the linkage member, with an elastic buffer member 4 interposed between the linkage member and the operating member. The linkage member is provided with a linkage slot 3a, and the operating member comprises a connected closing operating portion 31a and an opening operating portion 31b. The transmission mechanism's closing and opening output gear is provided with a transmission shaft, which cooperates with the linkage slot 3a to drive the driving member in linear motion along the sliding rod 102. The closing operating portion of the operating member is used to close the circuit breaker handle 5, while the opening operating portion is used to open the circuit breaker handle 5.

[0077] In this embodiment, the transmission mechanism only needs to be provided with one opening and closing output gear, and there is no need to separately provide a closing output gear 205 and an opening output gear 206. A closing and opening transmission shaft is provided on the closing and opening output gear. The closing and opening output gear can be a circular gear. The closing and opening transmission shaft is connected to the linkage groove 3a of the linkage part. The handle 5 of the circuit breaker is closed by operating the closing operating part 31a, and the handle 5 of the circuit breaker is opened by operating the opening operating part 31b.

[0078] like Figure 17 、 18 As shown, the linkage member is connected by two transverse linkage walls 31 and a vertical linkage wall 32 to form a U-shaped structure with an opening facing the first sliding groove 101. The two transverse linkage walls 31 are provided with through holes for the sliding rod 102 to pass through, and the vertical linkage wall 32 is provided with a linkage groove 3a. The linkage groove 3a cooperates with the transmission mechanism to enable the linkage member to drive the driving member to move along the sliding rod 102 to operate the circuit breaker handle 5 to open or close the circuit breaker. Preferably, the linkage groove 3a provided on the vertical linkage wall 32 is a strip-shaped linkage groove 3a with closed ends. The central axis of the linkage groove 3a is perpendicular to the sliding rod 102. The opening and closing transmission shaft extends into the linkage groove 3a to drive the linkage member to move linearly along the sliding rod.

[0079] like Figure 19In one embodiment shown, the operating member is arranged inside the linkage member and extends out of the first slide slot 101 to operate the handle 5 of the circuit breaker. The operating member includes a closing side wall and an opening side wall. The closing side wall and the opening side wall are connected to form a U-shaped structure with an opening facing the first slide slot 101. The closing side wall and the opening side wall are provided with through holes for the sliding rod 102 to pass through. The sliding rod 102 between the closing side wall and a transverse linkage wall 31 is sleeved with an elastic buffer 4. The edge of the closing side wall serves as the closing operating portion 31. a. An elastic buffer 4 is sleeved on the sliding rod 102 between the opening side wall and the other horizontal linkage wall 31. The edge of the opening side wall serves as the opening operating part 31b. In order to save space and increase the distance between the closing operating part 31a and the opening operating part 31b, the closing side wall and the opening side wall are preferably stepped, so that the closing side wall and the opening side wall are connected to form a symmetrical U-shaped structure with a gradually larger opening. The through holes on the closing side wall and the opening side wall for the sliding rod 102 to pass through are set on the side close to the linkage part.

[0080] The driving member in the present invention can be a separately set split-type opening driving member, a closing driving member, or an integrated driving member. In this way, the type of driving member can be designed according to the handle requirements of the circuit breaker, so that the electric operating device of the circuit breaker of the present invention has a wide range of applicability.

[0081] In order to optimize the space within the housing 1, it is preferred to divide the space within the housing 1 into a driving space and a transmission space using a first bracket 103 and a second bracket 104. Figure 6 、 7 As shown, the lower end and the upper end of the first bracket 103 are respectively provided with a first locking portion 103a and a second locking portion 103b. The first locking portion 103a and the second locking portion 103b are respectively formed by bending the lower end and the upper end of the first bracket 103 toward the direction of the operating surface 11. The area between the first locking portion 103a and the second locking portion 103b serves as the installation area for installing the sliding rod 102.

[0082] The second bracket 104 is as follows Figure 9 As shown, there are connecting ear plates 104a for mounting the mobile device 6, and the number of the connecting ear plates 104a is as follows: Figure 2 Two are shown, and the two connecting ear plates 104a are relatively arranged on one side of the second bracket 104 close to the connecting surface 12. A through-hole is provided on the connecting surface 12 for the connecting ear plates 104a to pass through. The moving device 6 is fixedly installed between the two connecting ear plates 104a after passing through the shell 1. Of course, the number of connecting ear plates 104a is not limited to two; a limiting plate 104b is provided at one end of the second bracket 104, and the limiting plate 104b is used to limit the transmission mechanism.

[0083] The transmission mechanism includes a motor 201 and a gear set connected to the motor 201, and the gear set is installed in the transmission space between the first bracket 103 and the second bracket 104; the second bracket 104 is longer than the first bracket 103, and the motor 201 is installed between the second bracket 104 and the first bracket 103 and below the first clamping portion 103a of the first bracket 103; the middle part of the upper end and the lower end of the second bracket 104 is bent toward the connection surface 12 to form a connecting ear plate 104a; a side wall next to the connecting ear plate 104a extends toward the middle and bends toward the operating surface 11 to form a bent The limiting plate 104b has an arc-shaped groove in the middle of the bent limiting plate 104b for the transmission mechanism to cooperate with the motor 201. The arc-shaped groove is specifically used to pass through the rotating shaft of the motor 201. It is preferred to provide an arc-shaped groove on the lower side of the limiting plate 104b to facilitate the stable installation of the motor 201. A plurality of mounting holes for installing the gear set are provided on the plate surface of the second bracket 104. A connecting ear plate 104a passing through the shell 1 and a limiting plate 104b for fixing the motor 201 are provided on the second bracket 104, so that the second bracket 104 is stably fixed in the shell 1 of the circuit breaker, which is beneficial to provide a stable operating environment for the transmission mechanism.

[0084] Furthermore, the first bracket 103 and the second bracket 104 are preferably made of metal material, which is beneficial to increase the strength of use and extend the service life.

[0085] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. An electric operating device for a circuit breaker, comprising a housing (1), characterized in that: A transmission mechanism is installed in the housing (1), and a side wall of the housing (1) is provided with a first sliding groove (101) communicating with the interior of the housing (1) as an operating surface (11); a sliding rod (102) is installed in the housing (1), and a driving member controlled by the transmission mechanism is installed on the sliding rod (102), and the driving member is provided with a closing operating part (31a) and an opening operating part (31b); the driving member passes through the first sliding groove (101) and extends out of the housing (1); the driving member moves along the sliding rod (102) under the control of the transmission mechanism, and the closing operating part (31a) and the opening operating part (31b) respectively operate the handle (5) of the circuit breaker to close and open; a moving device (6) is also provided on the electric operating device, which is used to drive the electric operating device to move along a moving track to correspond to the handles (5) of different circuit breakers.

2. The electric operating device for a circuit breaker according to claim 1, characterized in that: The transmission mechanism comprises a motor (201) and a gear set connected to the motor (201); the gear set comprises an opening and closing output gear; the opening and closing output gear is provided with a transmission shaft; the driving member is provided with a linkage groove that cooperates with the transmission shaft; the motor (201) drives the gear set to rotate; and the driving member slides on a sliding rod (102) through the cooperation between the transmission shaft of the opening and closing output gear and the linkage groove of the driving member to operate a handle (5) of the circuit breaker to close or open the circuit breaker.

3. The electric operating device for a circuit breaker according to claim 2, characterized in that: The closing and opening operating gears include a closing output gear (205) and an opening output gear (206); the transmission shafts on the closing and opening output gears include a closing transmission shaft (205a) provided on the closing output gear (205) and an opening transmission shaft (206a) provided on the opening output gear (206); the driving member includes a closing driving member and an opening driving member, and the closing driving member and the opening driving member are respectively provided with linkage grooves that cooperate with the closing transmission shaft (205a) and the opening transmission shaft (206a).

4. The electric operating device for a circuit breaker according to claim 3, characterized in that: The closing drive member comprises a first linkage member and a closing member, the first linkage member is mounted on the sliding rod (102), the closing member is mounted on the sliding rod (102) and is linked to the first linkage member, the first linkage member is provided with a first linkage groove (30a) cooperating with the closing transmission shaft (205a), and the closing member is provided with a closing operating portion (31a); and / or the opening drive member comprises a second linkage member and an opening member, the second linkage member is mounted on the sliding rod (102), the opening member is mounted on the sliding rod (102) and is linked to the second linkage member, the second linkage member is provided with a second linkage groove (30c) cooperating with the opening transmission shaft (206a), and the opening member is provided with an opening operating portion (31b).

5. The electric operating device for a circuit breaker according to claim 4, characterized in that: The first linkage groove (30a) and the second linkage groove (30c) both comprise an open end and a closed end; the closed end of the first linkage groove (30a) cooperates with the closing transmission shaft (205a) to drive the first linkage member to move, and the open end of the first linkage groove (30a) is used to enable the closing transmission shaft (205a) to rotate out after closing is completed, thereby achieving separation from the first linkage member; the closed end of the second linkage groove (30c) cooperates with the opening transmission shaft (206a) to drive the second linkage member to move, and the open end of the second linkage member is used to enable the opening transmission shaft (206a) to rotate out after opening is completed, thereby achieving separation from the second linkage member.

6. The electric operating device for a circuit breaker according to claim 5, characterized in that: The open end of the first linkage groove (30a) and the open end of the second linkage groove (30c) are staggered and opposite to each other, and the direction from the open end to the closed end of the first linkage groove (30a) is opposite to the direction from the open end to the closed end of the second linkage groove (30c).

7. The electric operating device for a circuit breaker according to claim 5, characterized in that: The first linkage groove (30a) comprises a first straight section and a first arc section that are connected, the first straight section is perpendicular to the sliding rod (102), the closed end is located at the end of the first straight section, and the open end is located at the end of the first arc section; The second linkage groove (30c) includes a second straight section and a second arc section that are connected in sequence, the second straight section is parallel to the sliding rod (102), the second arc section is approximately semicircular, the closed end is located at the end of the second arc section, one side of the second arc section is an arc side wall, the other side is a straight side wall, and the open end is located at the end of the second straight section.

8. The electric operating device for a circuit breaker according to claim 4, characterized in that: The closing output gear (205) and the opening output gear (206) are both elliptical gears; an elastic buffer (4) is provided between the first linkage member and the closing member, and / or an elastic buffer (4) is provided between the second linkage member and the opening member.

9. The electric operating device for a circuit breaker according to claim 3, characterized in that: The gear set further comprises a first-stage gear (202), a second-stage gear (203) and a third-stage gear (204); the first-stage gear (202) is meshed with the motor (201) via a worm, the second-stage gear (203) is meshed with the first-stage gear (202), and the third-stage gear (204) is meshed with the second-stage gear (203); a closing output gear (205) or an opening output gear (206) is provided on the third-stage gear (204), and the closing output gear (205) is meshed with the opening output gear (206).

10. The electric operating device for a circuit breaker according to claim 1, characterized in that: The side wall of the housing (1) opposite to the operating surface (11) serves as a connecting surface (12), and the moving device (6) for driving the housing (1) to move is installed on the connecting surface (12).

11. The electric operating device for a circuit breaker according to claim 4, 5 or 7, characterized in that: The first linkage member is connected in sequence by the first linkage wall (301), the third linkage wall (303) and the second linkage wall (302) to form a U-shaped structure with an opening facing the first sliding groove (101); the first linkage groove (30a) is arranged on the third linkage wall (303); the first linkage wall (301) and the second linkage wall (302) are provided with a through hole for the sliding rod (102) to pass through; the closing member is arranged inside the first linkage member; the closing member is connected in sequence by the first side wall (311), the first connecting wall (315) and the second side wall (312) to form a U-shaped structure; the first side wall (311) and the second side wall (312) are provided with a through hole for passing the sliding rod (102); an elastic buffer member (4) is sleeved on the sliding rod (102) between the second side wall (312) and the first linkage member; The second linkage member is connected in sequence by the fourth linkage wall (304), the sixth linkage wall (306) and the fifth linkage wall (305) to form a U-shaped structure; the fourth linkage wall (304) and the fifth linkage wall (305) are provided with a through hole for the sliding rod (102) to pass through, the second linkage groove (30c) is provided on the fourth linkage wall (304), the shutter member is provided in the second linkage member, the shutter member is connected in sequence by the third side wall (313), the second connecting wall (316) and the fourth side wall (314) to form a U-shaped structure, the third side wall (313) and the fourth side wall (314) are provided with a through hole for the sliding rod (102) to pass through, the shutter member is located between the fourth linkage wall (304) and the fifth linkage wall (305), and an elastic buffer member (4) is sleeved on the sliding rod (102) located between the fourth side wall (314) and the fourth linkage wall (304).

12. The electric operating device for a circuit breaker according to claim 11, characterized in that: The first linkage wall (301) is provided with a connection groove (30b) for connecting the closing member, and the first connection wall (315) passes through the connection groove (30b) of the first linkage member so that the second side wall (312) of the closing member is located inside the first linkage member; the first side wall (311) is provided with a closing operating portion (31a), the closing operating portion (31a) extends out of the first sliding groove (101) and is formed by extending from the middle edge of the first side wall (311) toward the first sliding groove (101), and the end of the closing operating portion (31a) is bent downward; The third side wall (313) is provided with a tripping operating portion (31b), which is formed integrally with the third side wall (313). The tripping operating portion (31b) is in the form of a U-shaped body with an open mouth facing upwards. The U-shaped body has a long side wall for connecting with the third side wall (313) and a short side wall for contacting the handle (5) of the circuit breaker.

13. The electric operating device for a circuit breaker according to claim 3, characterized in that: The gear set further comprises a control gear (207); a raised trigger platform (207a) is provided on the control gear (207); a plurality of position identification switches are arranged at intervals on a circumference coaxial with the control gear (207) and cooperate with the trigger platform (207a); the plurality of position identification switches comprise an initial position identification switch (208a), a closing position identification switch (208b), and an opening position identification switch (208c); When closing, the motor (201) drives the closing output gear (205) and the control gear (207) to rotate. The closing output gear (205) rotates in the closing direction and causes the closing operating unit (31a) to operate the handle (5) of the circuit breaker to close the circuit breaker through the closing transmission shaft (205a). When the triggering platform (207a) triggers the closing position identification switch (208b), the motor (201) rotates in the reverse direction. When the triggering platform (207a) triggers the initial position identification switch (208a), the closing operating unit (31a) returns to the initial position and the motor (201) stops rotating. When the switch is opened, the motor (201) drives the switch-opening output gear (206) and the control gear (207) to rotate. The switch-opening output gear (206) rotates in the switch-opening direction and causes the switch-opening operating part (31b) to operate the handle (5) of the circuit breaker to open the switch via the switch-opening transmission shaft (206a). When the triggering platform (207a) triggers the switch-opening position identification switch (208c), the motor (201) rotates in the reverse direction. When the triggering platform (207a) triggers the initial position identification switch (208a), the switch-opening operating part (31b) returns to the initial position and the motor (201) stops rotating.

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