Valve mechanism and direct-current switch cabinet valve mechanism device

Abstract

The utility model relates to the field of DC switch cabinets. The utility model relates to a valve mechanism, in particular to a valve mechanism and a direct-current switch cabinet valve mechanism device. According to the valve mechanism and the valve mechanism device of the direct-current switch cabinet, the fixed insulating plate and the two movable insulating plates all adopt insulating parts, so that the insulating requirement is met, and the harm that an electric arc is conducted to a cabinet body during arc spraying of a direct-current circuit breaker is effectively prevented. The moving distance and the moving speed of the two movable insulating plates can be controlled through the driving mechanism, and the device can be suitable for various DC switch cabinet bodies.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of DC switch cabinet. More specifically, the utility model relates to a shutter mechanism and a DC switch cabinet shutter mechanism device. BACKGROUND

[0002] DC switch cabinet equipment has a wide application in urban rail transit field. As the core protection equipment of rail transit DC power supply system, the safety and reliability of DC switch cabinet is very important. The shutter mechanism device ensures the insulation separation of the trolley room and the primary busbar room when the trolley of DC switch cabinet is in test position, and opens the shutter to make the movable contact pass through the shutter and mesh with the fixed contact when the trolley of DC switch cabinet is pushed into working position. The DC switch cabinet shutter mechanism device needs to meet the following points:

[0003] (1) The insulation distance requirement of rail transit DC power supply system is high, and the high requirement insulation distance between the shutter mechanism device and the primary live part needs to be met.

[0004] (2) The DC switch will spray arc when breaking under load, and the area where the switch sprays arc needs to be insulated from the outside to prevent the charge from being transmitted out to endanger the safety of equipment and personnel.

[0005] (3) The shutter mechanism needs to ensure the isolation of the trolley room and the primary busbar room when the trolley is in test position, and the shutter needs to be opened smoothly to ensure the meshing of movable and fixed contacts when the trolley is pushed into working position.

[0006] (4) Different contact positions have different requirements for the size and opening speed of the shutter.

[0007] However, the shutter mechanism devices of the DC switch cabinets on the market are difficult to meet the above requirements at the same time. UTILITY MODEL CONTENTS

[0008] The utility model aims at the above problems, and provides a shutter mechanism and a DC switch cabinet shutter mechanism device.

[0009] In order to realize the purposes and other advantages according to the utility model, a shutter mechanism is provided, which comprises:

[0010] A fixed insulating plate, two groups of shutter groups are arranged on the fixed insulating plate in an up-down interval;

[0011] Two groups of vertical guide mechanisms are arranged on the fixed insulating plate in an up-down interval;

[0012] Two movable insulating plates are in sliding fit with the fixed insulating plate and are connected with the two groups of vertical guide mechanisms respectively;

[0013] Driving mechanisms, respectively connected with the two movable insulation plates, the driving mechanisms driving the two movable insulation plates to move close to each other to respectively seal the two groups of valve groups, or driving the two movable insulation plates to move away from each other to respectively open the two groups of valve groups.

[0014] Further, in the valve mechanism, the vertical guiding mechanism comprises:

[0015] Two groups of guiding assemblies, oppositely arranged on the fixed insulation plate and respectively connected with two ends of the corresponding movable insulation plates.

[0016] Further, in the valve mechanism, the guiding assembly comprises:

[0017] A guide rod, vertically arranged and connected with the fixed insulation plate;

[0018] A sleeve coaxially sleeved on the guide rod, the sleeve respectively connected with the corresponding movable insulation plate and the driving mechanism.

[0019] Further, in the valve mechanism, the vertical guiding mechanism further comprises:

[0020] An L-shaped plate body, the right angle of the L-shaped plate body connected with the sleeve, two plate bodies of the L-shaped plate body respectively connected with the corresponding movable insulation plate and the driving mechanism.

[0021] Further, in the valve mechanism, two ends of the guide rod respectively connected with the fixed insulation plate through limiting members.

[0022] Further, in the valve mechanism, the driving mechanism comprises:

[0023] Two groups of driving assemblies, oppositely arranged and respectively connected with the two movable insulation plates.

[0024] Further, in the valve mechanism, the driving assembly comprises:

[0025] A connecting member;

[0026] An upper connecting rod, one end of the upper connecting rod hinged with the connecting member, the other end of the upper connecting rod hinged with the movable insulation plate below;

[0027] A lower connecting rod, one end of the lower connecting rod hinged with the connecting member, the other end of the lower connecting rod hinged with the movable insulation plate above;

[0028] An elastic member, arranged between the upper connecting rod and the lower connecting rod;

[0029] A driving member, one end of the upper connecting rod and one end of the lower connecting rod provided with horizontal protrusions, the horizontal protrusions located on the track of horizontal movement of the driving member.

[0030] Further, the connecting piece is horizontally provided with a positioning shaft, one end of the upper connecting rod and the lower connecting rod is respectively hinged with the positioning shaft, and the elastic member is a torsion spring sleeved on the positioning shaft, and two supporting arms of the elastic member are respectively connected with the upper connecting rod and the lower connecting rod.

[0031] Further, the upper connecting rod comprises:

[0032] a first rod body, one end of which is hinged with the positioning shaft;

[0033] a second rod body, one end of which is hinged with the other end of the first rod body, and the other end of which is hinged with the movable insulating plate located below;

[0034] the lower connecting rod comprises:

[0035] a third rod body, one end of which is hinged with the positioning shaft, and the third rod body is vertically staggered with the first rod body;

[0036] a fourth rod body, one end of which is hinged with the other end of the third rod body;

[0037] a fifth rod body, one end of which is hinged with the other end of the fourth rod body, and the other end of which is hinged with the movable insulating plate located above.

[0038] The utility model also provides a DC switch cabinet shutter mechanism device, including above-mentioned shutter mechanism.

[0039] The utility model has the advantages of:

[0040] In the DC switch cabinet shutter mechanism device, the fixed insulating plate and the two movable insulating plates adopt insulating pieces to meet the insulation requirement, effectively prevent the arc conduction to the cabinet body when the DC circuit breaker sprays arc, and the moving distance and the moving speed of the two movable insulating plates can be controlled through the driving mechanism, and the device can be applied to various DC switch cabinets.

[0041] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by the person skilled in the art through the research and practice of the utility model. DRAWINGS

[0042] Figure 1 It is the shutter mechanism's structural schematic diagram that the utility model discloses;

[0043] Figure 2 It is the shutter mechanism's perspective view when closing that the utility model discloses;

[0044] Figure 3The front view of the valve mechanism in the closed state;

[0045] Figure 4 The side view of the valve mechanism in the closed state;

[0046] Figure 5 The perspective view of the valve mechanism in the open state;

[0047] Figure 6 The front view of the valve mechanism in the open state;

[0048] Figure 7 The side view of the valve mechanism in the open state.

[0049] Wherein, the reference signs are represented as:

[0050] Fixed insulation plate 1, movable insulation plate 2, guide rod 3, sleeve 4, L-shaped plate body 5, limiting piece 6, connecting piece 7, driving piece 8, positioning shaft 9, first rod body 10, second rod body 11, third rod body 12, fourth rod body 13, fifth rod body 14, horizontal protrusion 15. DETAILED DESCRIPTION

[0051] The utility model makes further detailed description in combination with examples, so that the person skilled in the art can implement with reference to the description words.

[0052] It should be noted that in the description of the utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0053] As Figure 1 The utility model discloses a valve mechanism, including:

[0054] Fixed insulation plate 1, two groups of valve groups are arranged on it and spaced apart vertically;

[0055] Two groups of vertical guide mechanisms are arranged on the fixed insulation plate 1 and spaced apart vertically;

[0056] Two movable insulation plates 2 are slidably attached to the fixed insulation plate 1 and connected to the two groups of vertical guide mechanisms respectively;

[0057] The driving mechanism comprises two sets of driving assemblies arranged oppositely and connected with the two movable insulation plates 2 respectively. The two movable insulation plates 2 are connected with the two movable insulation plates 2 respectively, and the driving assemblies drive the two movable insulation plates 2 to approach each other to seal the two sets of valve groups respectively, or drive the two movable insulation plates 2 to move away from each other to open the two sets of valve groups respectively. Specifically, the driving assembly comprises:

[0058] The connecting piece 7 is provided with a positioning shaft 9 horizontally, and one end of the upper connecting rod and the lower connecting rod is hinged to the positioning shaft 9 respectively. The elastic member is a torsion spring sleeved on the positioning shaft 9, and two arms of the elastic member are connected with the upper connecting rod and the lower connecting rod respectively.

[0059] The upper connecting rod is hinged to one end of the connecting piece 7, and the other end is hinged to the movable insulation plate 2 below.

[0060] The lower connecting rod is hinged to one end of the connecting piece 7, and the other end is hinged to the movable insulation plate 2 above.

[0061] The elastic member is arranged between the upper connecting rod and the lower connecting rod.

[0062] The driving member 8 is provided with a horizontal protrusion 15 at one end of the upper connecting rod and the lower connecting rod, and the horizontal protrusion 15 is located on the track of the horizontal movement of the driving member 8.

[0063] In this embodiment, when the valve mechanism is applied in a DC switch cabinet, the fixed insulation plate 1 is installed on the vertical column of the DC switch cabinet, and the two sets of valve groups of the fixed insulation plate 1 correspond to the two movable insulation plates 2 respectively, and the valve group comprises at least one valve. The two sets of driving assemblies are arranged on the two sides of the DC switch trolley respectively, the two connecting pieces 7 are installed on the two lateral columns of the DC switch cabinet respectively, and the two driving members 8 are installed on the two sides of the DC switch trolley respectively. During the movement of the DC switch trolley, the two driving members 8 are driven to move horizontally, and when the driving member 8 and the horizontal protrusion 15 are in contact, an action force is applied to the horizontal protrusion 15 towards the fixed insulation plate 1, which drives the upper connecting rod and the lower connecting rod to rotate around the positioning shaft 9, thereby driving the two movable insulation plates 2 to approach each other to seal the two sets of valve groups respectively, or driving the two movable insulation plates 2 to move away from each other to open the two sets of valve groups respectively.

[0064] Specifically, when the DC switch trolley is not pushed into the working position, the valve mechanism is in the closed state, as shown in Figures 2-4As shown, two driving members 8 are not in contact with the driving assembly, at this time, the torsion spring is in a stretched state, the torsion spring exerts a downward force on the upper connecting rod and a upward force on the lower connecting rod, the movable insulation plate 2 located at the upper part moves downward under the combined force of gravity and the pulling force of the torsion spring, at this time, the movable insulation plate 2 located at the lower part moves upward under the combined force of gravity and the pulling force of the torsion spring, the two movable insulation plates 2 are close to each other and seal the shutters of the upper and lower shutter groups respectively.

[0065] When the DC switch trolley is pushed into the working position, the shutter mechanism is closed and opened, as shown, Figures 5-7 two driving members 8 move towards the fixed insulation plate 1, and in the moving process, the two driving members 8 are in contact with the horizontal protrusions 15 on the upper connecting rod and the lower connecting rod of the driving assembly on the same side, and during the movement of the two driving members 8 towards the fixed insulation plate 1, the two horizontal protrusions 15 are driven to rotate away from each other, thereby driving the movable insulation plate 2 located at the upper part to move upward and the movable insulation plate 2 located at the lower part to move downward, and the two movable insulation plates 2 are away from each other, when the DC switch trolley moves to the maximum stroke, the shutters of the upper and lower shutter groups are opened respectively.

[0066] The shutter mechanism in the embodiment effectively opens the shutter and ensures the insulation performance when the DC switch trolley is pushed in, isolates the arc, and can control the opening speed and opening size of the shutter, and has the advantages of simple structure, convenient operation and easy maintenance.

[0067] Preferably, as another embodiment of the utility model, the vertical guide mechanism comprises:

[0068] Two groups of guide assemblies are oppositely arranged on the fixed insulation plate 1 and connected with two ends of the corresponding movable insulation plate 2 respectively.

[0069] In the embodiment, the two groups of guide assemblies limit the movement track of the two ends of the movable insulation plate 2, so that the movable insulation plate 2 moves vertically stably.

[0070] Preferably, as another embodiment of the utility model, the guide assembly comprises:

[0071] A guide rod 3 is vertically arranged and connected with the fixed insulation plate 1;

[0072] A sleeve 4 is coaxially sleeved on the guide rod 3 and connected with the corresponding movable insulation plate 2 and the driving mechanism.

[0073] In the embodiment, the movement track of the sleeve 4 is limited by the sliding of the guide rod 3 on the sleeve 4, so that the sleeve 4 moves up and down stably, and the movable insulation plate 2 moves vertically stably.

[0074] Preferably, as another embodiment of the utility model, the vertical guide mechanism further comprises:

[0075] The L-shaped plate body 5 is connected with the sleeve 4 at the right angle, and two plate bodies of the L-shaped plate body 5 are connected with the corresponding movable insulation plate 2 and the driving mechanism respectively.

[0076] In this embodiment, the L-shaped plate body 5 is connected with the sleeve 4, the volume of the sleeve 4 is expanded, and the L-shaped plate body 5 is connected with the movable insulation plate 2 and the driving mechanism respectively.

[0077] Preferably, as another embodiment of the utility model, the guide rod 3 is connected with the fixed insulation plate 1 through the limiting piece 6 at both ends respectively.

[0078] In this embodiment, the limiting piece 6 is arranged at both upper and lower ends of the guide rod 3, when the valve mechanism is in the closed state, as shown in the figure, the two sleeves 4 are in contact with the corresponding limiting piece 6 respectively; when the valve mechanism is in the open state, as shown in the figure, the two sleeves 4 are in contact with the corresponding limiting piece 6 respectively, and the limiting position of the two movable insulation plates 2 is limited. Figures 2-4 Figures 5-7

[0079] Preferably, as another embodiment of the utility model, the upper connecting rod comprises:

[0080] The first rod body 10 is hinged at one end with the positioning shaft 9;

[0081] The second rod body 11 is hinged at one end with the other end of the first rod body 10, and is hinged at the other end with the movable insulation plate 2 located below;

[0082] The lower connecting rod comprises:

[0083] The third rod body 12 is hinged at one end with the positioning shaft 9, and the third rod body 12 is vertically staggered with the first rod body 10;

[0084] The fourth rod body 13 is hinged at one end with the other end of the third rod body 12;

[0085] The fifth rod body 14 is hinged at one end with the other end of the fourth rod body 13, and is hinged at the other end with the movable insulation plate 2 located above.

[0086] ​​Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the embodiments shown and described herein.

Claims

1. A shutter mechanism, characterized by, The utility model relates to a shutter mechanism, comprising: a fixed insulation board, two groups of shutters are arranged on the fixed insulation board in an up-down interval; two groups of vertical guide mechanisms are arranged on the fixed insulation board in an up-down interval; two movable insulation boards are in sliding fit with the fixed insulation board and are connected with the two groups of vertical guide mechanisms respectively; a driving mechanism is connected with the two movable insulation boards respectively, the driving mechanism drives the two movable insulation boards to close to each other to seal the two groups of shutters respectively or drives the two movable insulation boards to move away from each other to open the two groups of shutters respectively.

2. A shutter mechanism as claimed in claim 1, characterised in that The vertical guide mechanism comprises: two groups of guide assemblies are arranged oppositely on the fixed insulation board and are connected with two ends of the corresponding movable insulation boards respectively.

3. A shutter mechanism as claimed in claim 2, characterised in that The guide assembly comprises: a guide rod is arranged vertically and is connected with the fixed insulation board; a sleeve is coaxially sleeved on the guide rod and is connected with the corresponding movable insulation board and the driving mechanism respectively.

4. A shutter mechanism as claimed in claim 3, characterised in that The vertical guide mechanism further comprises: an L-shaped plate body is connected with the sleeve at a right angle, two plate bodies of the L-shaped plate body are connected with the corresponding movable insulation board and the driving mechanism respectively.

5. A shutter mechanism as claimed in claim 3, wherein The guide rod is connected with the fixed insulation board through a limiting piece at two ends respectively.

6. A shutter mechanism as claimed in claim 1, characterised in that The driving mechanism comprises: two groups of driving assemblies are arranged oppositely and are connected with the two movable insulation boards respectively.

7. A shutter mechanism as claimed in claim 6, characterised in that The driving assembly comprises: a connecting piece; an upper connecting rod is hinged with one end of the connecting piece and is hinged with the movable insulation board below at the other end; a lower connecting rod is hinged with one end of the connecting piece and is hinged with the movable insulation board above at the other end; a resilient piece is arranged between the upper connecting rod and the lower connecting rod; a driving piece, one end of the upper connecting rod and the lower connecting rod is provided with a horizontal protrusion, and the horizontal protrusion is located on the track of horizontal movement of the driving piece.

8. A shutter mechanism as claimed in claim 7, characterised in that A positioning shaft is horizontally arranged on the connecting piece, one end of the upper connecting rod and the lower connecting rod is hinged with the positioning shaft respectively, and the resilient piece is a torsion spring sleeved on the positioning shaft, and two arms of the resilient piece are connected with the upper connecting rod and the lower connecting rod respectively.

9. A shutter mechanism as claimed in claim 8, characterised in that The upper connecting rod comprises: a first rod body is hinged with the positioning shaft at one end; a second rod body is hinged with the other end of the first rod body at one end and is hinged with the movable insulation board below at the other end; The lower connecting rod comprises: a third rod body is hinged with the positioning shaft at one end, and the third rod body is vertically staggered with the first rod body; a fourth rod body is hinged with the other end of the third rod body at one end; a fifth rod body is hinged with the other end of the fourth rod body at one end and is hinged with the movable insulation board above at the other end.

10. A DC switchgear flap mechanism arrangement, characterized in that The utility model relates to a shutter mechanism, comprising: a fixed insulation board, two groups of shutters are arranged on the fixed insulation board in an up-down interval; two groups of vertical guide mechanisms are arranged on the fixed insulation board in an up-down interval; two movable insulation boards are in sliding fit with the fixed insulation board and are connected with the two groups of vertical guide mechanisms respectively; a driving mechanism is connected with the two movable insulation boards respectively, the driving mechanism drives the two movable insulation boards to close to each other to seal the two groups of shutters respectively or drives the two movable insulation boards to move away from each other to open the two groups of shutters respectively.

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