Guide rail type valve mechanism and switch cabinet body

Abstract

The invention relates to the field of handcart type switch devices, in particular to a guide rail type valve mechanism and a switch cabinet body. The guide rail type valve mechanism and the switch cabinet body are used for solving the problems that in the prior art, a guide rail limits the assembly positions of a guide device and a connecting rod, the insulation distance of the valve mechanism is limited, and the safety performance cannot be improved. The guide rail type valve mechanism comprises a valve frame, a valve and a transmission structure, the valve frame comprises guide rails, each guide rail is provided with a movable part, the valve is connected between the movable parts, and the transmission structure is provided with an action input part used for being matched with a circuit breaker handcart and a transmission connecting rod. The movable part comprises a movable connecting plate located on the front side of the guide rail, the movable connecting plate is matched with the guide rail through a guide part connected with the rear side face of the movable connecting plate, and the transmission connecting rod is connected to the front side of the movable connecting plate. Therefore, the assembly position of the connecting rod and the movable part is not limited by the guide rail, and the assembly position can be moved outwards to improve the safety performance of the valve mechanism.

Description

Technical Field

[0001] The invention relates to the field of hand-type switch devices, and in particular to a guide rail type valve mechanism and a switch cabinet body. Background Art

[0002] Switchgear is a commonly used power transmission and distribution equipment. In a trolley-type switchgear, a valve mechanism is often set between the circuit breaker chamber and the busbar chamber to cover the static contact inside the switchgear to prevent the staff from getting an electric shock accident due to contact with the static contact when operating the switchgear. When the movable circuit breaker trolley is in working condition, the upper and lower valves of the valve mechanism are opened to connect the circuit breaker trolley with the main circuit of the static contact; when power is cut off or maintenance is required, the circuit breaker trolley is disconnected from the static contact and retreats to the non-working position, and the upper and lower valves of the valve mechanism are closed to seal and isolate the energized static contact to ensure the safety of the maintenance personnel entering the cabinet for maintenance.

[0003] The Chinese utility model patent with authorization announcement number CN207559337U discloses a roller-type valve mechanism, which includes a contact box mounting plate for mounting a static contact and guide rails arranged on both sides of the contact box mounting plate. The guide rails are F-shaped and the openings of the guide rails face left and right. Guide devices are arranged on both sides of the upper valve and the lower valve. The guide device includes a guide plate and a guide wheel located behind the guide plate. The guide wheel cooperates with the guide rail to achieve the guiding movement of the upper and lower valves. The valve mechanism also includes a driving mechanism with an upper driving arm and a lower driving arm, which is a scissor-shaped driving mechanism as a whole and is used to cooperate with a circuit breaker trolley. The upper driving arm and the lower driving arm are connected to the front of the guide plate of the guide device through a connecting rod. When the circuit breaker trolley is pushed from the outermost side to the inner side, the driving mechanism transmits the action to the guide device through the connecting rod, thereby realizing the opening and closing of the valve. Among them, the upper valve and the lower valve are both made of insulating materials, and the connecting rod is made of metal. When the circuit breaker trolley and the static contact are closed, the distance between the trolley contact and the connecting rod is the shortest. Therefore, the insulation distance of the valve mechanism is the distance between the circuit breaker trolley contact and the connecting rod. The guide rail in the roller valve mechanism limits the assembly position of the guide device and the connecting rod, so that the insulation distance of the valve mechanism is also limited, and the safety performance cannot be improved. Summary of the invention

[0004] The object of the present invention is to provide a guide rail type valve mechanism to solve the problem in the prior art that the guide rail will limit the assembly position of the guide device and the connecting rod, so that the insulation distance of the valve mechanism is also limited and cannot be increased, and the safety performance cannot be improved. The object of the present invention is also to provide a switch cabinet body to solve the problem in the prior art that the guide rail will limit the assembly position of the guide device and the connecting rod, so that the insulation distance of the valve mechanism is also limited and cannot be increased, and the safety performance cannot be improved.

[0005] In order to solve the above technical problems, a guide rail type valve mechanism of the present invention includes a valve frame, a valve and a transmission structure. The valve frame includes guide rails which are arranged opposite to each other on the left and right and extend up and down. Each guide rail is provided with a movable part. The valve is connected between the movable parts which are opposite to each other on the left and right. The transmission structure has an action input part for cooperating with the circuit breaker trolley and a transmission connecting rod connected with the movable part. In the process of the circuit breaker trolley being pushed inward or withdrawn outward, the transmission connecting rod swings in a vertical plane extending forward and backward and transmits the action to the movable part to realize the opening and closing of the valve. The movable part includes a movable connecting plate located on the front side of the guide rail. The movable connecting plate cooperates with the guide rail through the guide part connected to the rear side thereof, and the transmission connecting rod is connected to the front side of the movable connecting plate.

[0006] The present invention proposes a new technical solution to the problem that the guide rail in the prior art limits the assembly position of the guide device and the connecting rod, so that the insulation distance of the valve mechanism is also limited and cannot be increased, and the safety performance cannot be improved. The movable connecting plate of the movable component is arranged on the front side of the guide rail, and the guide component on the rear side of the movable connecting plate cooperates with the guide rail, and the transmission connecting rod is connected to the front side of the movable connecting plate. In this way, the assembly position of the transmission connecting rod and the movable connecting plate is not limited by the guide rail, and the transmission connecting rod can be moved outward in the left and right directions, thereby increasing the distance between the transmission connecting rod and the circuit breaker trolley contacts, so as to improve the safety performance of the valve mechanism.

[0007] Furthermore, the guide rail is a C-shaped guide rail with a C-shaped cross-section, the opening of the guide rail is set forward, and the guide component includes a guide wheel that rotates around a horizontal axis extending in the front-to-back direction. The guide wheel is located in the inner cavity of the C-shaped guide rail and rolls with the side of the inner cavity of the guide rail.

[0008] Furthermore, the shutter frame comprises a fixed edge with the plate surface facing forward, and the guide rail is fixedly connected to the fixed edge via a bottom edge opposite to the opening thereof.

[0009] Another aspect of the present invention provides a switch cabinet body, which includes a cabinet body structure and a valve mechanism. The valve mechanism includes a valve frame, a valve and a transmission structure. The valve frame includes guide rails that are relatively arranged on the left and right and extend up and down. Each guide rail is provided with a movable part. The valve is connected between the movable parts that are relatively arranged on the left and right. The transmission structure has an action input part for cooperating with a circuit breaker trolley and a transmission connecting rod connected to the movable part. During the process of the circuit breaker trolley being pushed inward or withdrawn outward, the transmission connecting rod swings in a vertical plane extending forward and backward and transmits the action to the movable part to realize the opening and closing of the valve. The movable part includes a movable connecting plate located on the front side of the guide rail. The movable connecting plate cooperates with the guide rail through a guide part connected to its rear side, and the transmission connecting rod is connected to the front side of the movable connecting plate.

[0010] The present invention proposes a new technical solution to the problem that the guide rail in the prior art limits the assembly position of the guide device and the connecting rod, so that the insulation distance of the valve mechanism is also limited and cannot be increased, and the safety performance cannot be improved. The movable connecting plate of the movable component is arranged on the front side of the guide rail, and the guide component on the rear side of the movable connecting plate cooperates with the guide rail, and the transmission connecting rod is connected to the front side of the movable connecting plate. In this way, the assembly position of the transmission connecting rod and the movable connecting plate is not limited by the guide rail, and the transmission connecting rod can be moved outward in the left and right directions, thereby increasing the distance between the transmission connecting rod and the circuit breaker trolley contacts, so as to improve the safety performance of the valve mechanism.

[0011] Furthermore, the guide rail is a C-shaped guide rail with a C-shaped cross-section, the opening of the guide rail is set forward, and the guide component includes a guide wheel that rotates around a horizontal axis extending in the front-to-back direction. The guide wheel is located in the inner cavity of the C-shaped guide rail and rolls with the side of the inner cavity of the guide rail.

[0012] Furthermore, the shutter frame comprises a fixed edge with the plate surface facing forward, and the guide rail is fixedly connected to the fixed edge via a bottom edge opposite to the opening thereof.

[0013] Furthermore, the cabinet structure includes left and right side panels, and both left and right side panels are split structures and are divided into a front half side panel and a rear half side panel. The valve mechanism is installed on the front half side panel, and the contact box mounting plate for fixing the static contact is installed on the rear half side panel.

[0014] Further, the fixed edge is arranged at the rear edge of the front half side plate, and the contact box mounting plate is mounted at the front edge of the rear half side plate.

[0015] Furthermore, the cabinet structure includes left and right side panels, and both left and right side panels are split structures and are divided into a front half side panel and a rear half side panel. The valve mechanism is installed on the front half side panel, and the contact box mounting plate for fixing the static contact is installed on the rear half side panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a switch cabinet body of the present invention showing a guide rail type valve mechanism installed in the cabinet body structure;

[0017] Figure 2 It is a structural schematic diagram of a switch cabinet body of the present invention, in which a guide rail is installed on the front half side plate and a contact box mounting plate is installed on the rear half side plate;

[0018] Figure 3 for Figure 2 A local enlarged schematic diagram of point A;

[0019] Figure 4 is a schematic diagram of the structure of the guide rail;

[0020] Figure 5It is a schematic diagram of the structure of the active parts;

[0021] Figure 6 It is a schematic diagram of the structure of the cooperation between the guide rail and the movable parts;

[0022] Figure 7 It is a structural schematic diagram of the guide rail type valve mechanism when the valve is closed;

[0023] Figure 8 It is a structural schematic diagram of the guide rail type valve mechanism when the valve is open.

[0024] In the figure: 1, front half side plate; 2, rear half side plate; 3, contact box mounting plate; 4, contact box; 5, movable track; 6, guide rail type valve mechanism; 601, guide rail; 602, movable part; 6021, movable connecting plate; 6022, guide wheel; 603, long connecting rod; 604, short connecting rod; 605 driving member; 6051, upper driving arm; 6052, lower driving arm; 606, upper valve; 607, lower valve; 7, transmission guide plate. DETAILED DESCRIPTION

[0025] The Chinese utility model patent with the authorization announcement number CN207559337U discloses a roller valve mechanism, which includes a guide rail, a guide device is arranged on the guide rail to realize the guiding movement of the valve, the guide device includes a guide plate and a guide wheel located behind the guide plate, and the valve mechanism also includes a driving mechanism with an L-shaped upper driving arm and a lower driving arm, the upper driving arm and the lower driving arm are rotated and assembled at the ends of their short sides, and finally form a scissor shape, the lower driving arm is connected to the guide plate on the side of the upper valve through a long connecting rod, and the upper driving arm is connected to the guide plate on the side of the lower valve through a short connecting rod. In the process of the circuit breaker trolley being pushed from the outermost side to the inside, the driving mechanism transmits the action to the guide device through the long connecting rod and the short connecting rod, thereby realizing the opening and closing of the valve. Among them, the opening direction of the guide rail is toward the left and right direction, and the guide rail limits the assembly position of the guide device and the connecting rod, so that the insulation distance of the valve mechanism is also limited, and the safety performance cannot be improved. The present invention proposes a new technical solution to the problems existing in the above technical solutions. The core concept of the present invention is: a movable connecting plate of a movable component is arranged on the front side of a guide rail, the guide component on the rear side of the movable connecting plate cooperates with the guide rail, and a transmission connecting rod is connected to the front side of the movable connecting plate. In this way, the assembly position of the transmission connecting rod and the movable connecting plate is not restricted by the guide rail, and the transmission connecting rod can be moved outward in the left and right directions, thereby increasing the distance between the transmission connecting rod and the contacts of the circuit breaker trolley, so as to improve the safety performance of the valve mechanism.

[0026] Based on the above invention concept, a guide rail type valve mechanism of the present invention includes a valve frame, a valve and a transmission structure, and the valve frame includes Figure 1As shown in the figure, the guide rails 601 are arranged opposite to each other and extend up and down, and each guide rail is provided with a movable part 602. The valve is connected between the movable parts 602 opposite to each other on the left and right sides, and there are two valves in total, which are divided into: Figure 1 The upper valve 606 and the lower valve 607 shown are located on the front side of the static contact in the switch cabinet. The transmission structure has an action input component for cooperating with the circuit breaker trolley and a transmission connecting rod connected to the movable component 602. The valve frame also includes a movable track 5 for guiding the circuit breaker trolley to move forward and backward. In the process of the circuit breaker trolley being pushed inward or withdrawn outward, it can move forward and backward along the movable track 5, and the transmission connecting rod swings in a vertical plane extending forward and backward and transmits the action to the movable component 602 to realize the opening and closing of the valve. At the same time, a reset structure is also provided in the transmission mechanism to reset the valve mechanism to a non-working state when the valve mechanism ends its working state. The movable component 602 includes a movable part 602 located on the front side of the guide rail 601. Figure 5 The movable connecting plate 6021 shown in the figure cooperates with the guide rail 601 through the guide component connected to the rear side thereof, and the transmission connecting rod is connected to the front side of the movable connecting plate 6021. Figure 5 As shown, the front side of the movable connecting plate 6021 is provided with a hinged ear extending forward, and is hinged to the transmission connecting rod through the hinged ear. At this time, the assembly position of the connecting rod and the movable connecting plate 6021 is not limited by the guide rail 601, and the hinged ear can be moved outward to increase the insulation distance of the valve mechanism, thereby improving the safety performance of the valve mechanism.

[0027] When the guide valve mechanism 6 is in a non-working state, the upper valve 606 and the lower valve 607 are in a closed state. At this time, the valves block the static contacts. When the circuit breaker trolley moves forward, the circuit breaker trolley cooperates with the action input component and transmits the movement to the upper valve 606 and the lower valve 607 through the transmission connecting rod. The upper valve 606 and the lower valve 607 open to avoid the static contacts. Finally, the circuit breaker trolley and the static contacts are closed.

[0028] In this embodiment, the guide rail 601 is as follows Figure 4 The cross section of the C-shaped guide rail shown in FIG. 60 is a C-shaped guide rail, and the opening of the guide rail 601 is as shown in FIG. Figure 6 As shown in the figure, the guide member is arranged forward, and the guide member includes Figure 5The guide wheel 6022 shown rotates around the horizontal axis extending in the front-back direction, and the guide wheel 6022 is in the inner cavity of the C-shaped guide rail 601 and rolls with the side of the inner cavity of the guide rail 601. The C-shaped guide rail is easy to process and has low cost, and avoids the guide wheel 6022 from being disengaged from the guide rail 601 during use, thereby ensuring the reliability of the operation of the valve. In this embodiment, there are two guide wheels 602 arranged up and down and spaced at a certain distance on the rear side of the movable connecting plate. The guide wheel 602 is composed of a rolling bearing structure, and the guide wheel rolls with the two sides of the guide rail 601. When in use, it moves flexibly and runs smoothly, avoiding the problem of the valve being stuck due to the asynchronous movement of the two sides of the valve. Of course, in other embodiments, the opening of the guide rail can also face the left and right directions, and a plate surface parallel to the movable connecting plate is set on the rear side of the movable connecting plate, and a guide wheel is installed on the plate surface. The guide wheel cooperates with the guide rail with the opening facing the left and right directions, and the transmission connecting rod is connected to the front side of the movable connecting plate. It only needs to ensure that the guide rail does not limit the assembly position of the connecting rod and the movable connecting plate. In addition, in other embodiments, the guide rail can also be designed as a dovetail groove guide rail, and a slider that can cooperate with the dovetail groove guide rail is set on the rear side of the movable connecting plate, and the guiding movement of the valve is achieved through the cooperation between the slider and the guide rail.

[0029] In this embodiment, the valve frame includes: Figure 2 , Figure 3 The plate shown faces the fixed edge forward, and the guide rail 601 is fixedly connected to the fixed edge via the bottom edge opposite to its opening. Figure 4 As shown, the guide rail 601 is provided with a guide rail mounting hole on the bottom side opposite to its opening, and the guide rail 601 is mounted on the fixed edge by bolts. In this way, the installation reliability of the guide rail 601 is ensured. In addition, in other embodiments, a connecting seat can be provided on the valve frame at a position corresponding to the connecting hole of the guide rail 601, and the connecting seat is connected to the bottom side of the guide rail, and the reliability of the connection only needs to be ensured. Of course, in other embodiments, the guide rail can also be connected to the valve frame through the side surface adjacent to its opening, and the reliable installation of the guide rail only needs to be ensured.

[0030] Since the transmission structure does not involve the improvement of the present invention, the transmission structure can adopt the structure of the transmission mechanism in a guide wheel type valve mechanism published by the authorization announcement number CN207559337U. Of course, this embodiment also provides a transmission mechanism, which has an action input component that cooperates with the circuit breaker trolley, such as Figure 7 , Figure 8The driving member 605 shown in the figure has an upper driving arm 6051 and a lower driving arm 6052 arranged relatively in parallel. The upper driving arm 6051 and the lower driving arm 6052 are hinged at the ends with a vertical driving connecting plate, and finally present a scissor shape. At the same time, limit rods are also provided on the upper driving arm 6051 and the lower driving arm 6052 to limit the rotation range of the two when the two rotate. The upper driving arm 6051 is connected to the movable part 602 of the lower valve 607 through a short connecting rod 604, and the lower driving arm 6052 is connected to the movable part 602 of the upper valve 606 through a long connecting rod 603. When the circuit breaker trolley is pushed forward, the circuit breaker trolley is as shown in FIG. Figure 7 The transmission guide plate 7 shown (having two parallel extending guide plates) will press the upper driving arm 6051 and the lower driving arm 6052 to cause the two to rotate crosswise. At this time, the short connecting rod 604 connected to the upper driving arm 6051 moves downward, driving the lower valve 607 to move downward; the long connecting rod 603 connected to the lower driving arm 6052 moves upward, driving the upper valve 606 to move upward, and the valve opens to avoid the static contact. Finally, the circuit breaker trolley and the static contact are closed.

[0031] Another aspect of the present invention provides a switch cabinet body, which includes a cabinet body structure and a valve mechanism. The valve mechanism is located in front of the static contact in the switch cabinet. The valve mechanism is the same as the above-mentioned embodiment of the guide rail type valve mechanism, so it is not repeated here.

[0032] Meanwhile, in this embodiment, the cabinet structure includes a left side panel and a right side panel, and both the left side panel and the right side panel are split structures and are divided into a front half side panel 1 and a rear half side panel 2. The valve mechanism is installed on the front half side panel 1, and the contact box mounting plate 3 for fixing and mounting the static contact is installed on the rear half side panel 2. The valve mechanism is installed on the front half side panel 1, that is, the guide rail 601 of the valve mechanism is also installed on the front half side panel 1, so the fixed edge of the plate facing forward is set on the front half side panel 1; the contact box mounting plate 3 is installed on the rear half side panel 2, and the contact box 4 is arranged in groups and mounted on the contact box mounting plate 3. Therefore, the guide rail valve mechanism 6 and the static contact can be installed independently in no particular order, which is convenient for the disassembly and assembly of the switch cabinet, improves the assembly efficiency, and reduces the maintenance cost.

[0033] In this embodiment, the fixed edge is arranged at the rear edge of the front half side plate 1, and the contact box mounting plate 3 is mounted at the front edge of the rear half side plate 2. In this way, the relative position of the valve mechanism and the static contact can be ensured, and the valve mechanism can be ensured to operate normally. The front edge of the rear half side plate 2 of this embodiment is also provided with a fixed edge, which, on the one hand, makes the installation of the contact box simple, and on the other hand, the edge of the front half side plate 1 and the edge of the rear half side plate 2 can also be attached and connected by bolts, which ensures the reliability of the connection between the two, and also facilitates the disassembly and assembly of the front half side plate 1 and the rear half side plate 2, thereby improving the efficiency of assembly and disassembly.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A guide rail type valve mechanism, characterized in that: The invention comprises a valve frame, a valve and a transmission structure. The valve frame comprises guide rails which are arranged opposite to each other on the left and right sides and extend up and down. Each guide rail is provided with a movable part. The valve is connected between the movable parts which are opposite to each other on the left and right sides. The transmission structure comprises an action input part for cooperating with the circuit breaker trolley and a transmission connecting rod connected with the movable part. When the circuit breaker trolley is pushed inward or withdrawn outward, the transmission connecting rod swings in a vertical plane extending forward and backward and transmits the action to the movable part so as to realize the opening and closing of the valve. The movable part comprises an active connecting plate which is located at the front side of the guide rail. The active connecting plate cooperates with the guide rail through a guide part connected to the rear side thereof. The transmission connecting rod is connected to the front side of the active connecting plate.

2. The guide rail type valve mechanism according to claim 1, characterized in that: The guide rail is a C-shaped guide rail with a C-shaped cross-section. The opening of the guide rail is set forward. The guide component includes a guide wheel that rotates around a horizontal axis extending in the front-to-back direction. The guide wheel is located in the inner cavity of the C-shaped guide rail and rolls with the side of the inner cavity of the guide rail.

3. The guide rail type valve mechanism according to claim 2, characterized in that: The shutter frame comprises a fixed edge with a plate surface facing forward, and the guide rail is fixedly connected to the fixed edge via a bottom edge opposite to the opening thereof.

4. A switch cabinet body, characterized in that: The utility model comprises a cabinet structure and a valve mechanism, wherein the valve mechanism comprises a valve frame, a valve and a transmission structure, wherein the valve frame comprises guide rails which are arranged opposite to each other on the left and right sides and extend up and down, and each guide rail is provided with a movable part, and the valve is connected between the movable parts which are opposite to each other on the left and right sides, and the transmission structure comprises an action input part for cooperating with the circuit breaker trolley and a transmission connecting rod connected with the movable part, and when the circuit breaker trolley is pushed inward from the outermost side, the transmission connecting rod swings in a vertical plane extending forward and backward and transmits the action to the movable part so as to realize the opening and closing of the valve, and the movable part comprises an active connecting plate which is located at the front side of the guide rail, and the active connecting plate cooperates with the guide rail through a guide part connected to the rear side thereof, and the transmission connecting rod is connected to the front side of the active connecting plate.

5. The switch cabinet body according to claim 4, characterized in that: The guide rail is a C-shaped guide rail with a C-shaped cross-section. The opening of the guide rail is set forward. The guide component includes a guide wheel that rotates around a horizontal axis extending in the front-to-back direction. The guide wheel is located in the inner cavity of the C-shaped guide rail and rolls with the side of the inner cavity of the guide rail.

6. The switch cabinet body according to claim 5, characterized in that: The shutter frame comprises a fixed edge with a plate surface facing forward, and the guide rail is fixedly connected to the fixed edge via a bottom edge opposite to the opening thereof.

7. The switch cabinet body according to claim 6, characterized in that: The cabinet structure includes left and right side panels, and both left and right side panels are split structures and are divided into a front half side panel and a rear half side panel. The valve mechanism is installed on the front half side panel, and the contact box mounting plate for fixing the static contact is installed on the rear half side panel.

8. The switch cabinet body according to claim 7, characterized in that: The fixed edge is arranged on the rear edge of the front half side plate, and the contact box mounting plate is mounted on the front edge of the rear half side plate.

9. The switch cabinet body according to claim 4 or 5, characterized in that: The cabinet structure includes left and right side panels. The left and right side panels are split structures and are divided into a front half side panel and a rear half side panel. The valve mechanism is installed on the front half side panel. A contact box mounting plate for fixing and mounting the static contact is installed on the rear half side plate.

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