Valve drive mechanism, valve mechanism and handcart linkage mechanism for handcart

Abstract

The application provides a handcart valve driving mechanism, a valve mechanism and a handcart linkage mechanism, wherein the valve driving mechanism comprises a frame body and a linkage assembly, the frame body has a frame plate extending along a first direction, the first direction is the same as the running direction of the handcart, the linkage assembly comprises: a first driving member; a second driving member; a shaft sleeve structure vertically penetrating the frame plate, the shaft sleeve structure has a first annular shaft sleeve partition and a second annular shaft sleeve partition in a second direction, the first end of the first driving member is rotatably sleeved on the shaft sleeve structure and located in the first annular shaft sleeve partition, the first end of the second driving member is rotatably sleeved on the shaft sleeve structure and located in the second annular shaft sleeve partition; a first starting shaft, the first starting shaft is fixed on the first driving member, the first starting shaft can be driven by a driving plate to drive the first driving member to rotate; a second starting shaft, the second starting shaft is fixed on the second driving member, the second starting shaft can be driven by the driving plate to drive the second driving member to rotate.

Description

Technical Field

[0001] This invention relates to the field of switchgear, and in particular to the door drive mechanism, door mechanism, handcart linkage mechanism, and switchgear. Background Technology

[0002] In a trolley-type switchgear, the valve is a safety device that protects the switchgear cabinet after the trolley is pulled out. Its function is to shield the live contacts inside the cabinet when the trolley is not in use, preventing personnel from coming into contact with these live contacts and causing an accident. For example, the valve needs to close after the trolley is pulled out of the cabinet, and it needs to open when the trolley is moved into the cabinet so that the moving contacts on the trolley can contact the stationary contacts inside the cabinet. The valve typically consists of an upper valve and a lower valve, which are opened or closed by a valve drive mechanism.

[0003] For valve drive mechanisms, the more complex the structure, the higher the cost. Summary of the Invention

[0004] In view of this, the present invention proposes a door drive mechanism for a handcart, the handcart having a drive plate, the door drive mechanism including a frame and a linkage assembly, the frame having a frame plate extending along a first direction, the first direction being the same as the travel direction of the handcart, the linkage assembly including:

[0005] A first driving member, the first driving member being used to drive a first valve by rotation;

[0006] A second driving member is used to drive a second valve by rotation;

[0007] The linkage component also includes:

[0008] A bushing structure is perpendicularly inserted into the frame plate. The bushing structure has a first annular bushing partition and a second annular bushing partition in a second direction, which is perpendicular to the first direction. The first end of the first driving member is rotatably sleeved on the bushing structure and located inside the first annular bushing partition. The first end of the second driving member is rotatably sleeved on the bushing structure and located inside the second annular bushing partition.

[0009] A first start-up shaft is fixed to the first drive member, and the first start-up shaft can be driven by the drive plate to drive the first drive member to rotate.

[0010] The second start-up shaft is fixed to the second drive member and can be driven by the drive plate to drive the second drive member to rotate.

[0011] In this invention, a bushing structure with a bushing partition is provided to fit the first driving member and the second driving member onto the bushing structure. The first driving member and the second driving member are driven to rotate by the drive plate on the handcart via the first start shaft and the second start shaft, respectively. This structure is simple, easy to install, and has a low cost.

[0012] According to the valve drive mechanism described above, optionally, the first actuating shaft can be driven by the drive plate to move along a first path, and the second actuating shaft can be driven by the drive plate to move along a second path. The first path and the second path are opposite in a third direction, which is perpendicular to both the first and second directions. This structure is simple, easy to install, and has low cost; and / or

[0013] The width of the first annular bushing partition matches the thickness of the first end of the first drive member, and the width of the second annular bushing partition matches the thickness of the first end of the second drive member. In this way, the two annular bushing partitions can restrict the movement of the first ends of the two drive members, so that the first drive member and the second drive member only perform rotational movements.

[0014] Optionally, according to the valve drive mechanism described above, the linkage component further includes a reset member, one end of which is connected to the frame plate and the other end of which is connected to the first drive member. The reset member is used to apply an elastic force to the first drive member to close the first valve. This reset member has a simple structure, is easy to implement, and has low cost.

[0015] Optionally, according to the valve drive mechanism described above, the frame plate has a first elongated hole and a second elongated hole, the distance between the first elongated hole and the second elongated hole gradually decreases along a first direction, the first start-up shaft can slide in the first elongated hole, and the second start-up shaft can slide in the second elongated hole.

[0016] Optionally, according to the valve drive mechanism described above, the linkage assembly further includes a flat round head square neck bolt, which passes through the bushing structure and the frame plate, with the head of the flat round head square neck bolt located inside the frame plate. This flat round head square neck bolt facilitates installation.

[0017] Optionally, according to the valve drive mechanism described above, the first drive member is located above the second drive member, the first valve is a lower valve, and the second valve is an upper valve.

[0018] Optionally, according to the valve drive mechanism described above, the frame plate has a stop portion located below the second drive member, which limits the rotation angle of the second drive member. Due to the presence of this stop portion, the rotation angle of the second drive member is limited, ensuring that the second valve reaches the closed angle.

[0019] Optionally, according to the valve drive mechanism described above, the linkage assembly further includes a locking assembly that is movable between a locked position and an unlocked position. In the locked position, the locking assembly can block the movement of the first drive member and the second drive member. After the handcart is removed from the switch cabinet, both valves need to be closed to prevent anyone from contacting the live parts inside the cabinet.

[0020] Optionally, according to the valve drive mechanism described above, the locking assembly includes:

[0021] The handcart detection unit is rotatably mounted on the frame plate and located on the movement path of the handcart. The handcart detection unit is capable of rotating about an axis extending along a third direction, which is perpendicular to the first direction and the second direction.

[0022] A locking rod is located on the side of the frame plate away from the movement path of the handcart. The rotation of the handcart detection unit can trigger the movement of the locking rod in a first direction and in the opposite direction.

[0023] An elastic element is sleeved on the locking rod, and the elastic element is capable of applying a spring force to the locking rod to move it to the locked position.

[0024] Using the above components, the structure is simple, easy to install, and low in cost.

[0025] According to the valve drive mechanism described above, optionally, the first end of the first drive member has a first recess, and the first end of the second drive member has a second recess. The locking rod can extend into the first and second recesses in the locked position to restrict the rotation of the first and second drive members. This restriction method has a simple structure.

[0026] According to the valve drive mechanism described above, optionally, the locking rod includes a first rod body and a plate-shaped body connected to the first rod body, the elastic element is sleeved on the first rod body, the plate-shaped body has a third recess and a sliding hole, the sliding hole extends along a first direction, a fixing pin is fixed to the frame plate and the fixing pin extends into the sliding hole, and one end of the handcart detection unit away from the movement path of the handcart is located in the third recess.

[0027] Optionally, according to the valve drive mechanism described above, the frame further includes a mounting plate, on which the handcart detection unit is sleeved, and the mounting plate is fixed to the frame plate. The end of the handcart detection unit away from the handcart's movement path is arc-shaped, the third recess is arc-shaped, and the portion of the handcart detection unit located on the frame plate facing the handcart's movement path is handle-shaped, with the distance between this handle-shaped portion and the frame plate gradually increasing along the first direction. This installation method is simple and convenient, and the installation of the locking assembly can be determined according to actual needs.

[0028] Optionally, according to the valve drive mechanism described above, the number of linkage components is two, located on both sides of the first valve. The two linkage components ensure that both sides of the valve are driven by the valve drive mechanism, guaranteeing smooth valve operation.

[0029] The present invention also provides a valve drive for a handcart, comprising a valve drive mechanism for a handcart as described in any of the preceding claims, wherein the valve drive further comprises:

[0030] The first door is movably connected to the frame;

[0031] The second door is movably connected to the frame.

[0032] The present invention further provides a switchgear trolley linkage mechanism, including the valve drive mechanism as described in any of the preceding claims, and further including: a drive plate, which is fixedly mounted on the switchgear trolley, the trolley being able to move along a first direction, passing through an experimental position and moving to a working position; the drive plate having a first slide groove and a second slide groove, the first starting shaft passing through the first slide groove, the second starting shaft passing through the second slide groove, the first slide groove having a first holding section and a first driving section communicating with each other, the first holding section extending along a first direction, the first driving section extending along the first direction to a third direction; the second slide groove having a second holding section and a second driving section communicating with each other, the second holding section extending along a second direction, the second driving section extending along the first direction in a direction opposite to the third direction.

[0033] The present invention also provides a switch cabinet, including a door drive mechanism as described in any of the preceding claims. Attached Figure Description

[0034] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which will make the above and other features and advantages of the present invention more apparent to those skilled in the art. In the drawings:

[0035] Figure 1 This is a schematic diagram of the valve mechanism of a handcart according to an embodiment of the present invention when the valve is closed.

[0036] Figure 2 for Figure 1 A schematic diagram of the valve drive mechanism on side A when the valve is open.

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of some of the valve drive mechanisms when the valve is closed.

[0038] Figure 4 This is a schematic diagram of the bushing structure and the flat round head square neck bolt.

[0039] Figure 5 This is a schematic diagram of the locking assembly on the outside of the frame plate.

[0040] Figure 6 This is a schematic diagram of the locking assembly inside the frame plate.

[0041] Figure 7 This is a schematic diagram of the locking assembly in the locking position.

[0042] Figure 8 This is a schematic diagram of the locking component in the unlocked position.

[0043] The accompanying figure is labeled as follows:

[0044] 1-Driver board

[0045] 11-First maintenance phase

[0046] 12-First Drive Segment

[0047] 13-Second Maintenance Phase

[0048] 14-Second Drive Section

[0049] 2-Frame Board

[0050] 21-First long hole

[0051] 22-Second long hole

[0052] 23-Stop section

[0053] 31-First driving component

[0054] 311-First Recess

[0055] 32-Second drive component

[0056] 321-Second Depression

[0057] 33-Sleeve Structure

[0058] 331-First annular bushing partition

[0059] 332-Second annular bushing partition

[0060] 34-First Start-up Shaft

[0061] 35-Second starting shaft

[0062] 36-Reset component

[0063] 37-Flat round head square neck bolt

[0064] 41-Used Car Inspection Department

[0065] 42-Connector

[0066] 43-Locking bar

[0067] 431-First rod

[0068] 432-plate-shaped body

[0069] 4321 - Third Depression

[0070] 4322-Sliding Hole

[0071] 4323-Fixing Pin

[0072] 44-Elastic element

[0073] 5-Mounting Plate

[0074] 51-Bend

[0075] 7-Vertical bar

[0076] 81-First Link

[0077] 82-Second Link

[0078] 91-First Embankment

[0079] 92-Second Hatch

[0080] D1 - First Direction

[0081] D2 - Second Direction

[0082] D3-Third direction Detailed Implementation

[0083] To make the objectives, technical solutions, and advantages of this invention clearer, the following embodiments are provided to further illustrate the invention in detail. The nouns and pronouns referring to "person" in this patent application are not limited to specific genders.

[0084] The handcart has three positions: maintenance position, testing position, and working position. The maintenance position is where the handcart is located outside the switchgear cabinet, that is, after the handcart is pulled out of the cabinet. The specific working principles of the handcart in each position are existing technology and will not be elaborated here.

[0085] Figure 1 This is a schematic structural diagram of a illustrative embodiment of the valve mechanism of the handcart of the present invention, specifically a schematic diagram of the first valve 91 and the second valve 92 when closed. The valve mechanism illustrates the connection between the valve drive mechanism and the valves. The valve drive mechanism includes a frame and linkage components. The frame has a frame plate 2 extending along a first direction D1, which is also the travel direction of the handcart, i.e., the direction in which the handcart moves from the maintenance position to the working position, passing through a test position, and the direction opposite to the first direction D1 is the exit direction. As an example, the frame of the present invention includes two parallel frame plates 2. Correspondingly, the valve mechanism includes two linkage components distributed on both sides of the valve. The two linkage components ensure that both sides of the valve are driven by the valve drive mechanism, thereby guaranteeing the smoothness of the valve drive.

[0086] The following explanation uses one of the linked components as an example.

[0087] like Figures 1 to 4 As shown, the linkage component of the present invention includes a first driving component 31, a second driving component 32, a bushing structure 33, a first starting shaft 34, and a second starting shaft 35.

[0088] The first driving member 31 is used to drive the first valve 91 by rotation, and the second driving member 32 is used to drive the second valve 92 by rotation. For example, the first valve 91 is a lower valve, and the second valve 92 is an upper valve. Figure 1 As shown. As an example, to illustrate... Figure 1 Observing from the second direction D2, during the process of the two valves moving from closed to open, the first driving member 31 moves clockwise, and the second driving member 32 moves counterclockwise. This second direction D2 can also be understood as a direction perpendicular to the frame plate 2 and facing outwards from the frame plate 2. The first driving member 31 can drive the opening and closing of the first valve 91 via the first connecting rod 81; similarly, the second driving member 32 can drive the opening and closing of the second valve 92 via the second connecting rod 82. Figure 2 As shown, the Figure 2 for Figure 1The structure of the A-side valve drive mechanism of the valve mechanism in the valve closed state is illustrated as an example. The first drive member 31 and the second drive member 32 are located on the outside of the frame plate 2, which is the side away from the movement path of the handcart. In this way, the first drive member 31 and the second drive member 32 will not affect the movement of the handcart.

[0089] The bushing structure 33 is perpendicularly inserted into the frame plate 2. The bushing structure 33 has a first annular bushing partition 331 and a second annular bushing partition 332 in the second direction D2, which is perpendicular to the first direction D1. The first end of the first driving member 31 is rotatably fitted onto the bushing structure 33 and located within the first annular bushing partition 331. The first end of the second driving member 32 is rotatably fitted onto the bushing structure 33 and located within the second annular bushing partition 332. Figure 4 As shown, an annular bushing partition is formed by providing a protruding annular plate on the outer side of the main body of the bushing structure 33. In this way, both the first driving member 31 and the second driving member 32 can be fitted onto the bushing structure 33 without interfering with each other. Furthermore, the width of the first annular bushing partition 331 can match the thickness of the first end of the first driving member 31, for example, the width of the first annular bushing partition 331 is equal to the thickness of the first end of the first driving member 31, and the width of the second annular bushing partition 332 can match the thickness of the first end of the second driving member 32, for example, the width of the second annular bushing partition 332 is equal to the thickness of the first end of the second driving member 32. Thus, the two annular bushing partitions can restrict the movement of the first ends of the two driving members, thereby allowing the first driving member 31 and the second driving member 32 to only perform rotational movements.

[0090] The first starting shaft 34 is fixed to the first driving member 31, and the first starting shaft 34 can be driven by the driving plate 1 to drive the first driving member 31 to rotate. The second starting shaft 35 is fixed to the second driving member 32, and the second starting shaft 35 can be driven by the driving plate 1 to drive the second driving member 32 to rotate. During the movement of the handcart, the driving plate 1 moves accordingly in the first direction D1 and in the opposite direction to the first direction D1, thereby driving the two starting shafts to move. The two starting shafts then drive the corresponding driving members to rotate, causing the two valves to open or close simultaneously. For example, the driving plate 1 can drive the first starting shaft 34 and the second starting shaft 35 to move on the first path and the second path respectively, wherein the first path and the second path are opposite in the third direction D3, and the third direction D3 is perpendicular to the first direction D1 and the second direction D2. In this way, the first driving member 31 and the second driving member 32 can rotate simultaneously in opposite directions to drive the two valves to open or close simultaneously. As an example, Figure 1 and Figure 2Looking at the second direction D2, when the first driving member 31 drives the first valve 91 to open, the first driving member 31 rotates counterclockwise; when the second driving member 32 drives the second valve 92 to open, the second driving member 32 rotates clockwise.

[0091] In this invention, apart from the bushing structure 33, the first driving component 31, the second driving component 32, the first starting shaft 34, and the second starting shaft 35 are all machined parts, such as machined sheet metal parts, which have simple structures and low costs.

[0092] In this invention, by setting a bushing structure 33 with bushing partitions, the first driving member 31 and the second driving member 32 are sleeved on the bushing structure 33, and the driving plate 1 on the handcart drives the first driving member 31 and the second driving member 32 to rotate by driving the first starting shaft 34 and the second starting shaft 35 respectively. This structure is simple, easy to install, and has a low cost.

[0093] Optionally, the bushing structure 33 in this invention is fixed to the frame plate 2 by a flat round head square neck bolt 37. The head of the flat round head square neck bolt 37 is located on the inner side of the frame plate 2, that is, on the side facing the travel path of the handcart. Figure 4 As shown, the head of the flat round head square neck bolt 37 is flat, and the portion protruding from the inner side of the frame plate 2 is relatively thin, so it will not affect the movement of other components. In addition, the flat round head square neck bolt 37 is easy to install and can firmly fix the bushing structure 33 to the frame plate 2.

[0094] Optionally, the linkage assembly also includes a reset member 36. One end of the reset member 36 is connected to the frame plate 2, and the other end is connected to the first drive member 31. The reset member 36 is used to apply an elastic force to the first drive member 31 to close the first valve 91. For example, if the first valve 91 is a lower valve and the second valve 92 is an upper valve, after the valves are opened, the upper valve can return to the closed state by its own gravity. However, the lower valve needs to move upward to return to the closed state, so the reset member 36 needs to apply a reset force. The reset member 36 can specifically be a tension spring. The reset member 36 has a simple structure, is easy to implement, and has a low cost.

[0095] Optionally, such as Figures 6 to 8As shown, the frame plate 2 has a first elongated hole 21 and a second elongated hole 22. The distance between the first elongated hole 21 and the second elongated hole 22 gradually decreases along the first direction D1. The first starting shaft 34 can slide in the first elongated hole 21, and the second starting shaft 35 can slide in the second elongated hole 22. The function of the first elongated hole 21 and the second elongated hole 22 is to cooperate with the movement of the first starting shaft 34 and the second starting shaft 35 when driven by the drive plate 1, so that the first starting shaft 34 and the second starting shaft 35 can be displaced, thereby driving the first driving member 31 and the second driving member 32 to rotate.

[0096] Optionally, such as Figure 7 and Figure 8 As shown, the frame plate 2 has a stop 23 located below the second drive member 32. The stop 23 limits the rotation angle of the second drive member 32. When the second valve 92 is an upper valve, it can reset itself by its own gravity, thereby driving the second drive member 32 to rotate. Due to the presence of the stop 23, the rotation angle of the second drive member 32 is limited, ensuring that the second valve 92 reaches the closed angle.

[0097] After the handcart is removed from the switch cabinet, both doors need to be closed to prevent anyone from touching the live parts inside the cabinet. However, in reality, the doors can also be manually pushed open. To avoid this, the linkage assembly of the present invention also includes a locking assembly that can move between a locked position and an unlocked position. In the locked position, the locking assembly can block the movement of the first drive member 31 and the second drive member 32.

[0098] like Figures 5 to 8 As shown, the locking assembly includes a handcart detection unit 41, a locking rod 43, and an elastic element 44. Figure 5 and Figure 6 for Figure 1The diagram shows the structure on the opposite side from side A. The trolley detection unit 41 is rotatably mounted on the frame plate 2 and located on the trolley's movement path. The trolley detection unit 41 can rotate about an axis extending along a third direction D3, which is perpendicular to the first direction D1 and the second direction D2. The locking rod 43 is located on the side of the frame plate 2 away from the trolley's movement path. Rotation of the trolley detection unit 41 triggers movement of the locking rod 43 in the first direction D1 and in the opposite direction. An elastic element 44 is fitted onto the locking rod 43, and the elastic element 44 can apply a spring force to the locking rod 43 to move it towards the locked position. For example, as the trolley moves from the outside of the cabinet to the working position, it will touch the trolley detection unit 41. The portion of the trolley detection unit 41 on the side of the frame plate 2 facing the trolley's movement path is shaped like a handle, and the distance between this handle-shaped portion and the frame plate 2 gradually increases along the first direction D1. The curved section of the handle-shaped part is arc-shaped, facilitating pressing by the handcart. This handle-shaped part extends along the first direction D1, with its free end facing D1. When pressed by the handcart, it causes the handcart detection unit 41 to rotate. This rotation drives the locking rod 43 to move along the first direction D1, moving it from the locked position to the unlocked position. In the locked position, the locking rod 43 impedes the rotation of the first drive member 31 and the second drive member 32. In the unlocked position, the first and second drive members 31 and 32 can rotate. Correspondingly, as the handcart moves to the outside of the cabinet, the handcart detection unit 41 loses the pressure of the handcart and rotates, causing the locking rod 43 to move from the unlocked position to the locked position, thus restricting the rotation of the first and second drive members 31 and 32. Using this component results in a simple structure, easy installation, and low cost.

[0099] There are many ways in which the locking lever 43 restricts the first drive member 31 and the second drive member 32, for example, Figure 3 , Figure 7 and Figure 8 As shown, the first end of the first driving member 31 has a first recess 311, and the first end of the second driving member 32 has a second recess 321. The locking rod 43, in the locked position, can extend into the first recess 311 and the second recess 321 to restrict the rotation of the first driving member 31 and the second driving member 32. This restriction method has a simple structure; locking the first driving member 31 and the second driving member 32 can be achieved with a single locking rod 43, making it easy to implement and cost-effective. Of course, other methods can also be used to lock the first driving member 31 and the second driving member 32. For example, the locking assembly can include two locking rods 43, respectively positioned on the rotation paths of the first driving member 31 and the second driving member 32. The specific configuration can be determined according to actual needs and will not be elaborated upon here.

[0100] As an example, the locking lever 43 includes a first lever body 431 and a plate-like body 432 connected to the first lever body 431. An elastic element 44 is sleeved on the first lever body 431. The plate-like body 432 has a third recess 4321 and a sliding hole 4322. The sliding hole 4322 extends along a first direction D1. A fixing pin 4323 is fixed to the frame plate 2 and extends into the sliding hole 4322. One end of the handcart detection unit 41 away from the movement path of the handcart is located in the third recess 4321. The presence of the sliding hole 4322 ensures that the locking lever 43 can only move along the first direction D1, thereby enabling the locking lever 43 to accurately resist the rotation of the first driving member 31 and the second driving member 32. Without the action of external force, the locking lever 43 is in the locked position by the action of the elastic element 44. The elastic element 44 can specifically be a compression spring.

[0101] As an example, such as Figure 5 As shown, the frame also includes a mounting plate 5. The handcart detection unit is fitted onto the mounting plate 5, and the mounting plate 5 is fixed to the frame plate 2. The end of the handcart detection unit 41 away from the movement path of the handcart is arc-shaped, and the third recess 4321 is arc-shaped. The cooperation of the two arc-shaped structures facilitates the linear movement of the plate-shaped body 432 by the rotating component 42. The portion of the handcart detection unit 41 located on the side of the frame plate 2 facing the movement path of the handcart is handle-shaped, and the distance between this handle-shaped portion and the frame plate 2 gradually increases along the first direction D1, which facilitates pressing during handcart movement. During installation, the locking assembly is first installed onto the mounting plate 5, and then the mounting plate 5 is fixed to the frame plate 2. Figure 5 As can be seen, the mounting plate 5 has a bent portion with a through hole. The first rod 431 passes through this through hole. One end of the elastic member 44 abuts against the bent portion 51, and the other end abuts against the plate-like body 432. The width of the plate-like body 432 is greater than the width of the first rod 431. This installation method is simple and convenient, and the installation of the locking assembly can be determined according to actual needs.

[0102] The present invention also provides a valve drive for a handcart, the valve drive including a valve drive mechanism for signing any handcart, and further including the aforementioned first valve 91 and second valve 92. Both the first valve 91 and the second valve 92 are operatively connected to the frame. Figure 1 and Figure 2 As shown, the frame includes two vertical rods 7, and the two sides of the first door 91 and the second door 92 are rotatably connected to the two vertical rods 7 respectively.

[0103] The present invention also provides a trolley linkage mechanism for a switchgear, which includes the door drive mechanism of any of the preceding claims and further includes a drive plate 1. The trolley can move along a first direction D1, passing through an experimental position and moving to a working position. The drive plate 1 is fixed to the trolley of the switchgear. Figure 2 As shown, the drive plate 1 has a first slide groove and a second slide groove. A first actuating member 34 passes through the first slide groove, and a second actuating member 35 passes through the second slide groove. The first slide groove has a first holding section 11 and a first driving section 12 that are interconnected. The first holding section 11 extends along a first direction D1, and the first driving section 12 extends along the first direction D1 in a third direction D3. The second slide groove has a second holding section 13 and a second driving section 14 that are interconnected. The second holding section 13 extends along a second direction D2, and the second driving section 14 extends along the first direction D1 in a direction opposite to the third direction D3. The first driving section 12 can drive the first actuating shaft 34 to move along a first path, and the second driving section 14 can drive the second actuating shaft 35 to move along a second path.

[0104] The following specific example illustrates the working process of the handcart linkage mechanism of the switchgear.

[0105] When the handcart is located outside the switchgear cabinet, that is, when the handcart is in the maintenance position, such as Figure 1 As shown, the first valve 91 and the second valve 92 are closed, as... Figure 7 As shown, the locking rod 43 extends into the first recess 311 and the second recess 321, at which point the first drive rod and the second drive rod cannot rotate.

[0106] Next, the trolley moves from the maintenance position into the switchgear cabinet. The first starting shaft 34 slides along the first holding section 11 of the first slide groove, and the second starting shaft 35 slides along the second holding section 13 of the second slide groove. That is, the drive plate 1 slides, while the first starting shaft 34 and the second starting shaft 35 remain stationary, and they move relative to each other. During the movement of the trolley, it touches the trolley detection part 41. The trolley detection part 41 is pressed down, which simultaneously drives the locking rod 43 to move along the first direction D1, thereby causing the locking rod 43 to disengage from the first recess 311 and the second recess 321, that is, the locking rod 43 moves away from the locked position. Figure 8 As shown. At this time, the first and second drive rods can move freely.

[0107] Next, the first starting shaft 34 and the second starting shaft 35 move to the first drive section 12 and the second drive section 14, respectively. The first starting shaft 34 is driven by the lower edge of the first drive section 12, and slides along the first direction D1 in the first drive section 12 and the first elongated hole 21, thereby driving the first drive member 31 to move clockwise, which in turn drives the corresponding connecting rod to pull down, thus opening the lower valve. The second starting shaft 35 is driven by the upper edge of the second drive section 14, and slides along the first direction D1 in the second drive section 14 and the second elongated hole 22, thereby driving the second drive member 32 to move counterclockwise, which in turn drives the corresponding connecting rod to move upward, thus opening the upper valve. When the handcart is pushed to the working position, the moving contact on the handcart contacts the stationary contact inside the cabinet. After the handcart detection unit 41 is pressed by the handcart, it will be continuously pressed by the handcart to ensure that the locking rod 43 is always in the unlocked position.

[0108] When the handcart moves out of the cabinet from its working position, the first starting shaft 34 is driven by the upper edge of the first driving section 12, and slides in the first driving section 12 and the first elongated hole 21 in a direction opposite to the first direction D1. The reset member 36 drives the first driving member 31 to move counterclockwise, thereby driving the corresponding connecting rod to lift up, thus closing the lower valve. The second starting shaft 35 is driven by the lower edge of the second driving section 14, and slides in the second driving section 14 and the second elongated hole 22, thereby driving the second driving member 32 to move clockwise. The upper valve closes automatically due to its own gravity. During the closing process, the upper valve also drives the connecting rod, thereby driving the corresponding connecting rod to move downward. Due to the action of the stop part 23, the rotation angle of the second driving member 32 is limited, so that the upper valve is exactly in the closed position. During the process of the handcart moving out of the cabinet, the handcart will leave the handcart detection part 41. The handcart detection part 41 loses the pressing pressure of the handcart and will automatically reset to the locked state due to the action of the elastic member 44, that is, the locking rod 43 returns to the locked state. Figure 7 This is to prevent the valve from being manually opened.

[0109] In addition, the drive plate 1 is lower than the mounting surface of the pole post (not shown in the figure) on the handcart, so that the drive plate 1 is as far away from the pole post as possible, and the insulation requirements can be met without other structures.

[0110] The present invention also provides a switch cabinet, which includes a door drive mechanism of any of the foregoing embodiments.

[0111] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A valve drive mechanism for a handcart, the handcart having a drive plate (1), the valve drive mechanism including a frame and a linkage assembly, the frame having a frame plate (2) extending along a first direction (D1), the first direction (D1) being the same as the travel direction of the handcart, the linkage assembly including: The first drive member (31) is used to drive the first valve (91) by rotation. The second drive member (32) is used to drive the second valve (92) by rotation; The linkage component is characterized in that it further includes: A bushing structure (33) is perpendicularly inserted through the frame plate (2). The bushing structure (33) has a first annular bushing partition (331) and a second annular bushing partition (332) in a second direction (D2). The second direction (D2) is perpendicular to the first direction (D1). The first end of the first driving member (31) is rotatably sleeved on the bushing structure (33) and located in the first annular bushing partition (331). The first end of the second driving member (32) is rotatably sleeved on the bushing structure (33) and located in the second annular bushing partition (332). The first start-up shaft (34) is fixed to the first drive member (31), and the first start-up shaft (34) can be driven by the drive plate (1) to drive the first drive member (31) to rotate; The second start shaft (35) is fixed to the second drive member (32), and the second start shaft (35) can be driven by the drive plate (1) to drive the second drive member (32) to rotate; The frame plate (2) has a first elongated hole (21) and a second elongated hole (22). The distance between the first elongated hole (21) and the second elongated hole (22) gradually decreases along a first direction (D1). The first start-up shaft (34) can slide in the first elongated hole (21), and the second start-up shaft (35) can slide in the second elongated hole (22).

2. The valve drive mechanism according to claim 1, characterized in that, The first start-up shaft (34) can be driven by the drive plate (1) to move along a first path, and the second start-up shaft (35) can be driven by the drive plate (1) to move along a second path. The first path and the second path are opposite to each other in a third direction (D3), which is perpendicular to the first direction (D1) and the second direction (D2); and / or The width of the first annular bushing partition (331) matches the thickness of the first end of the first drive member (31), and the width of the second annular bushing partition (332) matches the thickness of the first end of the second drive member (32).

3. The valve drive mechanism according to claim 1, characterized in that, The linkage component also includes: The reset member (36) is connected at one end to the frame plate (2) and at the other end to the first drive member (31). The reset member (36) is used to apply an elastic force to the first drive member (31) to drive the first valve (91) to close.

4. The valve drive mechanism according to claim 1, characterized in that, The linkage component also includes: A flat round head square neck bolt (37) is inserted through the bushing structure (33) and the frame plate (2), with the head of the flat round head square neck bolt (37) located inside the frame plate (2).

5. The valve drive mechanism according to claim 1, characterized in that, The first drive member (31) is located above the second drive member (32), the first valve (91) is the lower valve, and the second valve (92) is the upper valve.

6. The valve drive mechanism according to claim 5, characterized in that, The frame plate (2) has a stop (23) located below the second drive member (32) and the stop (23) is used to limit the rotation angle of the second drive member (32).

7. The valve drive mechanism according to any one of claims 1-6, characterized in that, The linkage component also includes: A locking assembly that is movable between a locked position and an unlocked position, wherein in the locked position the locking assembly is capable of blocking the movement of the first drive member (31) and the second drive member (32).

8. The valve drive mechanism according to claim 7, characterized in that, The locking component includes: The handcart detection unit (41) is rotatably mounted on the frame plate (2) and located on the movement path of the handcart. The handcart detection unit (41) is rotatable about an axis extending along a third direction (D3), which is perpendicular to the first direction (D1) and the second direction (D2). The locking rod (43) is located on the side of the frame plate (2) away from the movement path of the handcart. The rotation of the handcart detection unit (41) can trigger the locking rod (43) to move in the first direction (D1) and in the direction opposite to the first direction (D1). An elastic element (44) is sleeved on the locking rod (43), and the elastic element (44) can apply a spring force to the locking rod (43) to move it to the locking position.

9. The valve drive mechanism according to claim 8, characterized in that, The first drive member (31) has a first recess (311) at its first end, and the second drive member (32) has a second recess (321) at its first end. The locking rod (43) can extend into the first recess (311) and the second recess (321) in the locked position to restrict the rotation of the first drive member (31) and the second drive member (32).

10. The valve drive mechanism according to claim 8, characterized in that, The locking rod (43) includes a first rod body (431) and a plate-shaped body (432) connected to the first rod body (431). The elastic element (44) is sleeved on the first rod body (431). The plate-shaped body (432) has a third recess (4321) and a sliding hole (4322). The sliding hole (4322) extends along a first direction (D1). A fixing pin (4323) is fixed to the frame plate (2) and the fixing pin (4323) extends into the sliding hole (4322). One end of the handcart detection unit (41) away from the movement path of the handcart is located in the third recess (4321).

11. The valve drive mechanism according to claim 10, characterized in that, The frame also includes a mounting plate (5), the handcart detection part (41) is sleeved on the mounting plate (5), the mounting plate (5) is fixed to the frame plate (2), the end of the handcart detection part (41) away from the movement path of the handcart is arc-shaped, the third recess (4321) is arc-shaped, the part of the handcart detection part (41) located on the side of the frame plate (2) facing the movement path of the handcart is handle-shaped, and the distance between the handle-shaped part and the frame plate (2) gradually increases along the first direction (D1).

12. The valve drive mechanism according to claim 1, characterized in that, There are two linkage components, located on both sides of the first valve (91).

13. A valve mechanism for a handcart, characterized in that, The handcart includes a valve drive mechanism according to any one of claims 1-12, the valve mechanism further comprising: The first door (91) is movably connected to the frame; The second door (92) is movably connected to the frame.

14. The trolley linkage mechanism of the switchgear, including the door drive mechanism according to any one of claims 1-12, further comprising: A drive plate (1) is fixedly mounted on a switch cabinet trolley, the trolley being able to move along a first direction (D1) through a test position to a working position; the drive plate (1) has a first slide groove and a second slide groove, the first starting shaft (34) passes through the first slide groove, the second starting shaft (35) passes through the second slide groove, the first slide groove has a first holding section (11) and a first driving section (12) that are interconnected, the first holding section (11) extends along the first direction (D1), the first driving section (12) extends along the first direction (D1) to a third direction (D3); the second slide groove has a second holding section (13) and a second driving section (14) that are interconnected, the second holding section (13) extends along the second direction (D2), the second driving section (14) extends along the first direction (D1) in a direction opposite to the third direction (D3), the third direction (D3) being perpendicular to the first direction (D1) and the second direction (D2).

15. A switch cabinet, characterized in that, Includes the valve drive mechanism according to any one of claims 1-12.

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