Double-acting breaking device

Abstract

The utility model provides a double-acting on-off device. The double-acting breaking device comprises a first contact and a second contact assembly, the first contact assembly comprises a first main contact and a first moving contact, the second contact assembly comprises a second main contact, a second moving contact and an air cylinder, and the second main contact is connected with the air cylinder; the transmission device comprises a connector part, a first transmission part and a second transmission part, and the connector part is rotatably arranged and connected with the first transmission part and the second transmission part so as to drive the first moving contact to move through the first transmission part and drive the air cylinder to move through the second transmission part; in the switching-on or switching-off process of the double-acting on-off device, the connector part rotates to drive the first moving contact and the air cylinder to move in opposite directions. The double-acting arc extinguish chamber solves the problem that a double-acting arc extinguish chamber in the prior art is large in overall occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of breaking devices, in particular to a double-action breaking device. Background Art

[0002] At present, when the switch device is opening, the arc is blown by compressed gas, so that the gas is ejected through the nozzle of the moving contact to perform the arc extinguishing operation. In order to improve the arc extinguishing ability of the arc extinguishing chamber, a double-action arc extinguishing chamber is proposed in the prior art. The double-action arc extinguishing chamber is a static arc contact arranged in a guideable movable form, and a double-action linkage structure is arranged between the static arc contact and the moving end part of the arc extinguishing chamber.

[0003] However, the double-acting linkage structure of the double-acting arc extinguishing chamber in the prior art is relatively complex, and the double-acting linkage structure is driven from one end, resulting in a longer overall length of the double-acting arc extinguishing chamber and limited installation space for the double-acting arc extinguishing chamber. Utility Model Content

[0004] The main purpose of the utility model is to provide a double-acting breaking device to solve the problem in the prior art that the overall space occupied by the double-acting arc extinguishing chamber is large, resulting in limited installation space.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a double-acting breaking device, including a first contact assembly and a second contact assembly, the first contact assembly including a first main contact and a first moving contact connected to each other, the second contact assembly including a second main contact, a second moving contact and a cylinder, the second main contact and the second moving contact are connected to the cylinder and move synchronously, and the cylinder has an opening; the double-acting breaking device also includes: a transmission device, including a joint part, a first transmission part and a second transmission part, the joint part is rotatably arranged and connected to both the first transmission part and the second transmission part, so as to drive the first contact assembly to move through the first transmission part and drive the cylinder to move through the second transmission part; wherein, during the process of closing or opening the double-acting breaking device, the joint part is driven to rotate to drive the first contact assembly and the cylinder to move in opposite directions.

[0006] Furthermore, the transmission device also includes: a first connecting shaft, one end of which is fixedly connected to the first moving contact, and the other end of which is pivotally connected to the first transmission part; and / or a second connecting shaft, one end of which is fixedly connected to the cylinder, and the other end of which is pivotally connected to the second transmission part.

[0007] Furthermore, the transmission device also includes: a transition connection assembly, the joint part is fixedly connected to the transition connection assembly and moves synchronously, the transition connection assembly includes a third connecting shaft and a fourth connecting shaft, the third connecting shaft is rotatably connected to the first transmission part, and the fourth connecting shaft is rotatably connected to the second transmission part; wherein, along the length direction of the double-action breaking device, the rotation axis L of the joint part is located between the first connecting shaft and the second connecting shaft; the first connecting shaft and the third connecting shaft are respectively located at two ends of the first transmission part, and the second connecting shaft and the fourth connecting shaft are respectively located at two ends of the second transmission part.

[0008] Furthermore, the second transmission part has a first through hole, and the transition connection assembly also includes: a first connecting plate, the joint part is arranged on the first connecting plate, and the first end of the fourth connecting shaft is pivotally connected to the first connecting plate and passed through the first through hole; wherein, the rotation axis of the joint part and the fourth connecting shaft are arranged parallel to each other, and the joint part and the second transmission part are respectively located on both sides of the first connecting plate.

[0009] Furthermore, the first transmission part has a second through hole, and the transition connection assembly also includes: a second connecting plate, the second end of the fourth connecting shaft is pivotally connected to the second connecting plate, and the third connecting shaft is rotatably arranged on the second connecting plate and penetrates into the second through hole; wherein, along the extension direction of the rotation axis of the joint part, the second connecting plate is located between the first transmission part and the second transmission part, and the second transmission part is located between the first connecting plate and the second connecting plate.

[0010] Further, the first transmission part is a flat plate; and / or, the second transmission part is a flat plate; and / or, the first transmission part is located inside the second transmission part.

[0011] Further, the first transmission part is connected to the first main contact to drive the first moving contact to move synchronously through the first main contact; or, the first transmission part is connected to the first moving contact to drive the first moving contact to slide relative to the first main contact.

[0012] Further, the first main contact has a third through hole, and at least a portion of the first moving contact is slidably disposed in the third through hole to slide relative to the first main contact; and / or the first moving contact is a rod of equal diameter.

[0013] Furthermore, the second contact assembly has a nozzle, which is connected to the inner cavity of the cylinder; the double-action breaking device also includes a bracket, one end of which extends into the opening and is movably connected to the cylinder, so that the inner cavity of the cylinder, the nozzle and at least part of the bracket are surrounded to form an insulating gas buffer chamber.

[0014] Further, there is one transmission device, and one transmission device is located on one side of the first contact assembly and the second contact assembly; or, there are multiple transmission devices, at least one transmission device is located on the first side of the first contact assembly and the second contact assembly, and at least another transmission device is located on the other side of the first contact assembly and the second contact assembly; and / or, a mating assembly is provided between the cylinder and the bracket, and the cylinder is slidably connected to the bracket through the mating assembly.

[0015] Applying the technical solution of the utility model, the double-acting breaking device includes a first contact assembly, a second contact assembly and a transmission device. The first contact assembly includes a first main contact and a first moving contact connected to each other, and the second contact assembly includes a second main contact, a second moving contact and a cylinder. The second main contact and the second moving contact are connected to the cylinder and move synchronously. The cylinder has an opening, and the second contact assembly has a nozzle, which is connected to the inner cavity of the cylinder. The transmission device includes a joint part, a first transmission part and a second transmission part. The joint part is rotatably arranged and connected to both the first transmission part and the second transmission part, so as to drive the first contact assembly to move through the first transmission part and drive the cylinder to move through the second transmission part. In the process of closing or opening the double-acting breaking device, the joint part is driven to rotate to drive the first contact assembly and the cylinder to move in opposite directions. In this way, the joint part is connected to both the first transmission part and the second transmission part, and the first transmission part can drive the first contact assembly to move, and the second transmission part can drive the cylinder to move, thereby realizing the linkage of the joint part to the first contact assembly and the cylinder, ensuring that the double-action breaking device can be opened or closed. Since the joint part drives the first contact assembly and the cylinder to move synchronously, along the movement direction of the first contact assembly and / or the cylinder, the above arrangement makes the joint part located in the middle of the entire double-action breaking device, thereby shortening the overall length of the transmission device and the double-action breaking device, thereby reducing the overall occupied space of the double-action breaking device, solving the problem in the prior art that the overall occupied space of the double-action arc extinguishing chamber is large, resulting in limited installation space, and expanding the use range of the double-action breaking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A cross-sectional view of a first embodiment of a double-action breaking device according to the utility model in a closed position is shown;

[0018] Figure 2 Shows Figure 1 A view of the transmission device of the double-acting breaking device;

[0019] Figure 3Shows Figure 1 A front view of the transmission device of the double-acting breaking device;

[0020] Figure 4 Shows Figure 1 A front view of the first transmission part of the double-acting breaking device;

[0021] Figure 5 Shows Figure 1 A front view of the second transmission part of the double-action breaking device;

[0022] Figure 6 Shows Figure 1 A cross-sectional view of a double-action breaking device in the embodiment of the present invention when opening the circuit breaker and an arc is formed between the first moving contact and the second main contact;

[0023] Figure 7 Shows Figure 6 B-direction view of the transmission device of the double-acting breaking device;

[0024] Figure 8 Shows Figure 1 A cross-sectional view of the double-acting breaking device in the figure when opening the gate;

[0025] Fig. 9 Shows Figure 8 A C-direction view of the transmission device of the double-acting breaking device;

[0026] Fig.10 Shows Figure 1 A cross-sectional view of the double-acting breaking device in the open position;

[0027] Fig.11 Shows Fig.10 D-direction view of the transmission device of the double-acting breaking device;

[0028] Fig.12 A cross-sectional view of the second embodiment of the double-action breaking device according to the utility model in the closed position is shown;

[0029] Fig.13 Shows Fig.12 A cross-sectional view of the double-acting breaking device in the figure when opening the gate;

[0030] Fig.14 Shows Fig.12 Cross-sectional view of the double-acting breaking device in the open position.

[0031] The above drawings include the following reference numerals:

[0032] 10. first contact assembly; 11. first main contact; 111. third through hole; 12. first moving contact;

[0033] 20. second contact assembly; 21. second main contact; 22. second moving contact; 23. cylinder; 231. opening; 24. nozzle;

[0034] 30. bracket; 31. insulating gas buffer chamber;

[0035] 40. Transmission device; 41. Joint; 42. First transmission part; 421. Second through hole; 422. Fourth through hole; 43. Second transmission part; 431. First through hole; 432. Fifth through hole; 44. First connecting shaft; 45. Second connecting shaft; 46. Transition connection assembly; 461. Third connecting shaft; 462. Fourth connecting shaft; 463. First connecting plate; 464. Second connecting plate;

[0036] 50. Matching components. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0039] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0040] In order to solve the problem in the prior art that the overall space occupied by the double-acting arc extinguishing chamber is large, resulting in limited installation space, the present application provides a double-acting breaking device.

[0041] like Figures 1 to 11As shown, the double-acting breaking device includes a first contact assembly 10 and a second contact assembly 20. The first contact assembly 10 includes a first main contact 11 and a first moving contact 12 connected to each other. The second contact assembly 20 includes a second main contact 21, a second moving contact 22 and a cylinder 23. The second main contact 21 and the second moving contact 22 are connected to the cylinder 23 and move synchronously. The cylinder 23 has an opening 231. The double-acting breaking device also includes a transmission device 40. The transmission device 40 includes a joint part 41, a first transmission part 42 and a second transmission part 43. The joint part 41 is rotatably arranged and connected to both the first transmission part 42 and the second transmission part 43, so as to drive the first contact assembly 10 to move through the first transmission part 42 and drive the cylinder 23 to move through the second transmission part 43. In the process of closing or opening the double-acting breaking device, the joint part 41 is driven to rotate to drive the first contact assembly 10 and the cylinder 23 to move in opposite directions.

[0042] By applying the technical solution of this embodiment, the joint part 41 is connected to both the first transmission part 42 and the second transmission part 43, and the first transmission part 42 can drive the first contact assembly 10 to move, and the second transmission part 43 can drive the cylinder 23 to move, thereby realizing the linkage of the joint part 41 to the first contact assembly 10 and the cylinder 23, ensuring that the double-acting breaking device can be opened or closed. Since the joint part 41 drives the first contact assembly 10 and the cylinder 23 to move synchronously, along the movement direction of the first contact assembly 10 and / or the cylinder 23, the above arrangement makes the joint part 41 located in the middle of the entire double-acting breaking device, thereby shortening the overall length of the transmission device 40 and the double-acting breaking device, thereby reducing the overall occupied space of the double-acting breaking device, solving the problem in the prior art that the overall occupied space of the double-acting arc extinguishing chamber is large, resulting in limited installation space, and expanding the scope of use of the double-acting breaking device.

[0043] In this embodiment, the second contact assembly 20 has a nozzle 24, which is connected to the inner cavity of the cylinder 23. The double-action breaking device also includes a bracket 30, one end of which extends into the opening 231 and is movably connected to the cylinder 23, so that the inner cavity of the cylinder 23, the nozzle 24 and at least a part of the bracket 30 surround and form an insulating gas buffer chamber 31.

[0044] In this embodiment, since the joint part 41 performs a rotational motion, when the double-acting breaking device performs an opening / closing operation, it is only necessary to rotate the joint part 41 in a clockwise direction or a counterclockwise direction. This also simplifies the structure of the transmission device 40, reduces the operating difficulty of the staff, and reduces the processing cost and difficulty of the double-acting breaking device.

[0045] Specifically, when the double-acting breaking device needs to be opened, the joint part 41 is rotated in the clockwise direction to make the first contact assembly 10 and the cylinder 23 move in opposite directions (the first contact assembly 10 moves to the left and the cylinder 23 moves to the right), so that the gas in the insulating gas buffer chamber 31 is compressed. Since the first contact assembly 10 blocks the nozzle 24, the gas pressure in the insulating gas buffer chamber 31 increases, thereby forming an arc between the first contact assembly 10 and the second main contact 21. The arc heats the insulating gas buffer chamber 31, so that the gas pressure in the insulating gas buffer chamber 31 increases faster. If the joint part 41 continues to be rotated in the clockwise direction, the first contact assembly 10 is disengaged from the nozzle 24, so that the gas in the insulating gas buffer chamber 31 is ejected, and the arc is blown out until the first contact assembly 10 moves to the opening position, at which time the double-acting breaking device is in the opening state.

[0046] Specifically, when the double-action breaking device is in the opening state, if it is necessary to close the switch, it is only necessary to rotate the joint part 41 in the counterclockwise direction.

[0047] like Figure 1 , Figure 6 , Figure 8 and Fig.10 As shown, the transmission device 40 also includes a first connecting shaft 44 and / or a second connecting shaft 45. Among them, one end of the first connecting shaft 44 is fixedly connected to the first moving contact 12, and the other end of the first connecting shaft 44 is pivotally connected to the first transmission part 42. One end of the second connecting shaft 45 is fixedly connected to the cylinder 23, and the other end of the second connecting shaft 45 is pivotally connected to the second transmission part 43. In this way, when the joint part 41 drives the first transmission part 42 and the second transmission part 43 to move, the above-mentioned arrangement ensures that the first transmission part 42 drives the first moving contact 12 to move and the second transmission part 43 drives the cylinder 23 to move, thereby avoiding the first transmission part 42 and the second transmission part 43 from being unable to move under any working condition due to the limited degree of freedom, thereby improving the power transmission reliability of the transmission device 40.

[0048] In this embodiment, the transmission device 40 further includes a first connecting shaft 44 and a second connecting shaft 45, wherein one end of the first connecting shaft 44 is fixedly connected to the first moving contact 12, and the other end is pivotally connected to the first transmission part 42. One end of the second connecting shaft 45 is fixedly connected to the cylinder 23, and the other end is pivotally connected to the second transmission part 43. The first connecting shaft 44 and the second connecting shaft 45 are arranged parallel to each other.

[0049] like Figure 1 , Figure 3 , Figure 6 , Figure 8 and Fig.10As shown, the transmission device 40 also includes a transition connection assembly 46. The joint part 41 is fixedly connected to the transition connection assembly 46 and moves synchronously. The transition connection assembly 46 includes a third connecting shaft 461 and a fourth connecting shaft 462. The third connecting shaft 461 is rotatably connected to the first transmission part 42, and the fourth connecting shaft 462 is rotatably connected to the second transmission part 43. Among them, along the length direction of the double-action breaking device, the rotation axis L of the joint part 41 is located between the first connecting shaft 44 and the second connecting shaft 45; the first connecting shaft 44 and the third connecting shaft 461 are respectively located at the two ends of the first transmission part 42, and the second connecting shaft 45 and the fourth connecting shaft 462 are respectively located at the two ends of the second transmission part 43. In this way, the joint part 41 drives the first transmission part 42 and the second transmission part 43 to move through the transition connection assembly 46, which not only further improves the power transmission reliability of the transmission device 40, but also makes the first transmission part 42 drive the movement of the first moving contact 12 and the second transmission part 43 drive the movement of the cylinder 23 more stable without generating vibration and noise, thereby improving the operating stability of the double-acting breaking device.

[0050] In this embodiment, the two ends of the first transmission part 42 are rotatably connected to the first connecting shaft 44 and the third connecting shaft 461, respectively, and the first connecting shaft 44 and the third connecting shaft 461 are arranged parallel to each other. The two ends of the second transmission part 43 are rotatably connected to the second connecting shaft 45 and the fourth connecting shaft 462, respectively, and the second connecting shaft 45 and the fourth connecting shaft 462 are arranged parallel to each other. In this way, the above arrangement further prevents the first transmission part 42 and the second transmission part 43 from being unable to move in any working condition due to the limited degree of freedom, thereby improving the power transmission reliability of the transmission device 40.

[0051] like Figure 3 and Figure 5As shown, the second transmission part 43 has a first through hole 431, and the transition connection assembly 46 further includes a first connecting plate 463. The joint part 41 is arranged on the first connecting plate 463, and the first end of the fourth connecting shaft 462 is pivotally connected to the first connecting plate 463 and is inserted into the first through hole 431. Among them, the rotation axis L of the joint part 41 and the fourth connecting shaft 462 are arranged parallel to each other, and the joint part 41 and the second transmission part 43 are respectively located on both sides of the first connecting plate 463. In this way, the fourth connecting shaft 462 is inserted into the first through hole 431, so that the second transmission part 43 is located on the side of the first connecting plate 463 away from the joint part 41, and the rotation axis L of the joint part 41 and the fourth connecting shaft 462 are staggered to ensure that when the joint part 41 is rotated in the clockwise direction, the second transmission part 43 drives the cylinder 23 to move to the right (moving away from the first moving contact 12), and when the joint part 41 is rotated in the counterclockwise direction, the second transmission part 43 drives the cylinder to move to the left (moving toward the first moving contact 12). At the same time, the above arrangement makes the structure of the transition connection assembly 46 simpler, easier to process and realize, and reduces the processing cost and difficulty of the transition connection assembly 46.

[0052] In this embodiment, the rotation axis L of the joint portion 41 and the first connecting plate 463 are perpendicular to each other. The joint portion 41 is columnar.

[0053] like Figure 4 and Figure 5 As shown, the first transmission part 42 has a second through hole 421, and the transition connection assembly 46 further includes a second connection plate 464. The second end of the fourth connection shaft 462 is pivotally connected to the second connection plate 464, and the third connection shaft 461 is rotatably disposed on the second connection plate 464 and penetrates the second through hole 421. In the extension direction of the rotation axis of the joint part 41, the second connection plate 464 is located between the first transmission part 42 and the second transmission part 43, and the second transmission part 43 is located between the first connection plate 463 and the second connection plate 464. In this way, the third connecting shaft 461 is inserted into the second through hole 421, so that the first transmission part 42 is arranged away from the joint part 41 relative to the second transmission part 43, and the rotation axis L of the joint part 41 and the third connecting shaft 461 are staggered to ensure that when the joint part 41 is rotated in the clockwise direction, the first transmission part 42 drives the first moving contact 12 to move to the left (moving away from the cylinder 23), and when the joint part 41 is rotated in the counterclockwise direction, the first transmission part 42 drives the first moving contact 12 to move to the right (moving toward the cylinder 23). At the same time, the above arrangement makes the structure of the transition connection assembly 46 simpler, easier to process and realize, and reduces the processing cost and difficulty of the transition connection assembly 46.

[0054] In this embodiment, the rotation axis L of the joint portion 41 and the second connecting plate 464 are disposed perpendicular to each other. The rotation axis L of the joint portion 41 is always located between the first connecting shaft 44 and the second connecting shaft 45 .

[0055] Optionally, the first transmission part 42 is a flat plate; and / or the second transmission part 43 is a flat plate; and / or the first transmission part 42 is located inside the second transmission part 43. In this way, the above arrangement makes the structure of the first transmission part 42 and / or the second transmission part 43 simpler, easier to process and realize, and reduces the processing cost and difficulty of the two.

[0056] In this embodiment, the first transmission part 42 and the second transmission part 43 are both flat plates, and the flat plates and the first connecting plate 463 and the second connecting plate 464 are arranged parallel to each other.

[0057] In this embodiment, the first transmission part 42 is located inside the second transmission part 43. Thus, the above arrangement makes the length of the first transmission part 42 smaller than the length of the second transmission part 43, further reducing the overall length of the transmission device 40.

[0058] In this embodiment, the first moving contact 12 is fixedly connected to the first main contact 11. Thus, during the movement of the first moving contact 12, the first main contact 11 moves synchronously.

[0059] Optionally, the first transmission part 42 is connected to the first main contact 11 to drive the first moving contact 12 to move synchronously through the first main contact 11; or, the first transmission part 42 is connected to the first moving contact 12 to drive the first moving contact 12 to slide relative to the first main contact 11. In this way, the connection mode between the first transmission part 42 and the first contact assembly 10 is more diverse to meet different usage requirements and working conditions, and also improve the processing flexibility of the staff.

[0060] In this embodiment, the first transmission part 42 is connected to the first main contact 11 so as to drive the first moving contact 12 to move synchronously through the first main contact 11 , that is, the first main contact 11 and the first moving contact 12 move synchronously.

[0061] Optionally, there is one transmission device 40, and one transmission device 40 is located on one side of the first contact assembly 10 and the second contact assembly 20; or, there are multiple transmission devices 40, at least one transmission device 40 is located on the first side of the first contact assembly 10 and the second contact assembly 20, and at least another transmission device 40 is located on the other side of the first contact assembly 10 and the second contact assembly 20; and / or, a matching component 50 is provided between the cylinder 23 and the bracket 30, and the cylinder 23 is slidably connected to the bracket 30 through the matching component 50. In this way, the above-mentioned setting, on the one hand, makes the selection of the number of transmission devices 40 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff; on the other hand, it improves the matching stability between the cylinder 23 and the bracket 30 to ensure that the cylinder 23 can slide smoothly relative to the bracket 30.

[0062] In this embodiment, there is one transmission device 40 , and one transmission device 40 is located on one side of the first contact assembly 10 and the second contact assembly 20 .

[0063] In this embodiment, a matching component 50 is provided between the cylinder 23 and the bracket 30, and the cylinder 23 is slidably connected to the bracket 30 through the matching component 50. The matching component 50 includes a protrusion and a recess, one of which is provided on the cylinder 23, and the other of which is provided on the bracket 30. The protrusion extends into the recess and can slide along the extension direction of the recess, and the extension direction of the recess is consistent with the sliding direction of the cylinder 23.

[0064] like Figure 4 and Figure 5 As shown, the first transmission part 42 further has a fourth through hole 422, and the fourth through hole 422 is used to pass the first connecting shaft 44. The second transmission part 43 further has a fifth through hole 432, and the fifth through hole 432 is used to pass the second connecting shaft 45.

[0065] Embodiment 2

[0066] The double-action breaking device in the second embodiment is different from that in the first embodiment in that the connection method of the first main contact 11 and the first moving contact 12 is different.

[0067] In this embodiment, the first transmission part 42 is connected to the first moving contact 12 to drive the first moving contact 12 to slide relative to the first main contact 11 , that is, the first main contact 11 is fixed and the first moving contact 12 moves with the first transmission part 42 .

[0068] Optionally, the first main contact 11 has a third through hole 111, and at least a portion of the first moving contact 12 is slidably disposed in the third through hole 111 to slide relative to the first main contact 11; and / or the first moving contact 12 is a rod of equal diameter.

[0069] like Figures 11 to 14 As shown, the first main contact 11 has a third through hole 111, and at least a portion of the first moving contact 12 is slidably disposed in the third through hole 111 to slide relative to the first main contact 11. In this way, the above arrangement enables the double-action breaking device to move only the first moving contact 12 during the opening or closing process, while the first main contact 11 is fixed differently, thereby making the structure of the first contact assembly 10 more diverse to meet different usage requirements and working conditions, and also improving the processing flexibility of the staff.

[0070] In this embodiment, the first moving contact 12 is an equal-diameter rod to ensure smoother sliding of the first moving contact 12 relative to the first main contact 11, and also makes the structure of the third through hole 111 simpler, easier to process and realize, thereby reducing the processing cost and difficulty of the first contact assembly.

[0071] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0072] The double-action breaking device comprises a first contact assembly, a second contact assembly and a transmission device. The first contact assembly comprises a first main contact and a first moving contact connected to each other, the second contact assembly comprises a second main contact, a second moving contact and a cylinder, the second main contact is connected to the cylinder and moves synchronously, the cylinder has an opening, the second contact assembly has a nozzle, and the nozzle is connected to the inner cavity of the cylinder. The transmission device comprises a joint part, a first transmission part and a second transmission part, the joint part is rotatably arranged and connected to both the first transmission part and the second transmission part, so as to drive the first contact assembly to move through the first transmission part and drive the cylinder to move through the second transmission part. In the process of closing or opening the double-action breaking device, the joint part is driven to rotate to drive the first contact assembly and the cylinder to move in opposite directions. In this way, the joint part is connected to both the first transmission part and the second transmission part, and the first transmission part can drive the first contact assembly to move, and the second transmission part can drive the cylinder to move, thereby realizing the linkage of the joint part to the first contact assembly and the cylinder, ensuring that the double-action breaking device can open or close the gate. Since the joint part drives the first contact assembly and the cylinder to move synchronously, along the movement direction of the first contact assembly and / or the cylinder, the above-mentioned arrangement makes the joint part located in the middle of the entire double-action breaking device, thereby shortening the overall length of the transmission device and the double-action breaking device, thereby reducing the overall occupied space of the double-action breaking device, solving the problem in the prior art that the overall occupied space of the double-action arc extinguishing chamber is large, resulting in its limited installation space, and expanding the scope of use of the double-action breaking device.

[0073] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0074] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0075] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0076] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-acting breaking device, comprising a first contact assembly (10) and a second contact assembly (20), wherein the first contact assembly (10) comprises a first main contact (11) and a first moving contact (12) connected to each other, and the second contact assembly (20) comprises a second main contact (21), a second moving contact (22) and a cylinder (23), wherein the second main contact (21) and the second moving contact (22) are connected to the cylinder (23) and move synchronously, and the cylinder (23) has an opening (231); characterized in that: The double-action breaking device also includes: A transmission device (40), comprising a joint portion (41), a first transmission portion (42) and a second transmission portion (43); the joint portion (41) is rotatably arranged and connected to both the first transmission portion (42) and the second transmission portion (43), so as to drive the first contact assembly (10) to move through the first transmission portion (42) and drive the cylinder (23) to move through the second transmission portion (43); In the process of closing or opening the double-action breaking device, the joint part (41) is driven to rotate, thereby driving the first contact assembly (10) and the cylinder (23) to move in opposite directions.

2. The double-action breaking device according to claim 1, characterized in that: The transmission device (40) further comprises: a first connecting shaft (44), one end of the first connecting shaft (44) being fixedly connected to the first moving contact (12), and the other end of the first connecting shaft (44) being pivotally connected to the first transmission part (42); and / or, A second connecting shaft (45), one end of the second connecting shaft (45) is fixedly connected to the cylinder (23), and the other end of the second connecting shaft (45) is pivotally connected to the second transmission part (43).

3. The double-action breaking device according to claim 2, characterized in that: The transmission device (40) further comprises: A transition connection assembly (46), wherein the joint portion (41) is fixedly connected to the transition connection assembly (46) and moves synchronously, and the transition connection assembly (46) comprises a third connecting shaft (461) and a fourth connecting shaft (462), wherein the third connecting shaft (461) is rotatably connected to the first transmission portion (42), and the fourth connecting shaft (462) is rotatably connected to the second transmission portion (43); Among them, along the length direction of the double-action breaking device, the rotation axis L of the joint part (41) is located between the first connecting shaft (44) and the second connecting shaft (45); the first connecting shaft (44) and the third connecting shaft (461) are respectively located at the two ends of the first transmission part (42), and the second connecting shaft (45) and the fourth connecting shaft (462) are respectively located at the two ends of the second transmission part (43).

4. The double-action breaking device according to claim 3, characterized in that: The second transmission part (43) has a first through hole (431), and the transition connection assembly (46) further includes: a first connecting plate (463), the joint portion (41) being arranged on the first connecting plate (463), and the first end of the fourth connecting shaft (462) being pivotally connected to the first connecting plate (463) and passing through the first through hole (431); The rotation axis of the joint portion (41) and the fourth connecting shaft (462) are arranged parallel to each other, and the joint portion (41) and the second transmission portion (43) are respectively located on two sides of the first connecting plate (463).

5. The double-action breaking device according to claim 4, characterized in that: The first transmission part (42) has a second through hole (421), and the transition connection assembly (46) further includes: a second connecting plate (464), the second end of the fourth connecting shaft (462) being pivotally connected to the second connecting plate (464), and the third connecting shaft (461) being rotatably disposed on the second connecting plate (464) and passing through the second through hole (421); Wherein, along the extension direction of the rotation axis of the joint part (41), the second connecting plate (464) is located between the first transmission part (42) and the second transmission part (43), and the second transmission part (43) is located between the first connecting plate (463) and the second connecting plate (464).

6. The double-action breaking device according to claim 1, characterized in that: The first transmission part (42) is a flat plate; and / or the second transmission part (43) is a flat plate; and / or the first transmission part (42) is located on the inner side of the second transmission part (43).

7. The double-action breaking device according to claim 1, characterized in that: The first transmission part (42) is connected to the first main contact (11) so as to drive the first moving contact (12) to move synchronously via the first main contact (11); or, the first transmission part (42) is connected to the first moving contact (12) so as to drive the first moving contact (12) to slide relative to the first main contact (11).

8. The double-action breaking device according to claim 7, characterized in that: The first main contact (11) has a third through hole (111), and at least a portion of the first moving contact (12) is slidably arranged in the third through hole (111) so as to slide relative to the first main contact (11); and / or the first moving contact (12) is a rod of equal diameter.

9. The double-action breaking device according to claim 1, characterized in that: The second contact assembly (20) has a nozzle (24), and the nozzle (24) is connected to the inner cavity of the cylinder (23); the double-action breaking device also includes a bracket (30), one end of which extends into the opening (231) and is movably connected to the cylinder (23), so that the inner cavity of the cylinder (23), the nozzle (24) and at least a part of the bracket (30) are surrounded to form an insulating gas buffer chamber (31).

10. The double-action breaking device according to claim 9, characterized in that: There is one transmission device (40), and one transmission device (40) is located on one side of the first contact assembly (10) and the second contact assembly (20); or, there are multiple transmission devices (40), at least one transmission device (40) is located on a first side of the first contact assembly (10) and the second contact assembly (20), and at least another transmission device (40) is located on the other side of the first contact assembly (10) and the second contact assembly (20); and / or, A matching component (50) is provided between the cylinder (23) and the bracket (30), and the cylinder (23) is slidably connected to the bracket (30) via the matching component (50).

Images