Valve device and centrally installed switchgear

Abstract

The utility model discloses a valve device and a centrally installed switchgear, the valve device comprises an upper valve plate, a lower valve plate, a first installation mechanism and a second installation mechanism, and the upper valve plate and the lower valve plate are arranged between the first installation mechanism and the second installation mechanism from top to bottom along the vertical direction; each of the first mounting mechanism and the second mounting mechanism comprises an upper valve rack, a lower valve rack, a gear and a pushing mechanism; the upper valve plate is connected with the upper valve rack, the lower valve plate is connected with the lower valve rack, the gear is arranged between the upper valve rack and the lower valve rack and meshed with the upper valve rack and the lower valve rack, and the pushing mechanism is connected with the upper valve rack. The pushing mechanism can drive the upper valve rack to ascend or descend so as to drive the gear to rotate, and the gear drives the lower valve rack to move in the direction opposite to the upper valve rack. The valve device is not prone to clamping stagnation, stable, reliable, simple in structure, few in spare and accessory parts, easy to machine and assemble and capable of effectively reducing cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of high and low voltage electrical complete sets of equipment, in particular to a valve device and a central cabinet. Background Art

[0002] The valve mechanism is an important component of the central cabinet safety protection. It can isolate the charged parts and prevent electric shock accidents during operation, maintenance and inspection.

[0003] The most widely used valve mechanism currently features a scissor-style, double-arm connecting rod structure, with the upper and lower valve plates mounted on connecting rods and attached to left and right guide rods. The opening and closing of the valve is driven by the opening and closing of the scissor arms. The valve plates of this valve mechanism are connected and pushed by connecting rods, and rely on guide rods to position and limit the downward movement of the valve. In actual use, if the accessories are poorly processed, installed with deviations, or lubricated improperly, the valve may become stuck, eccentric, tilted, or fail to open or close properly. Furthermore, the valve mechanism is complex, containing over thirty parts, some of which require sophisticated processing techniques. Assembly and installation on the cabinet are cumbersome and require high precision, often requiring multiple adjustments after installation.

[0004] Therefore, how to provide a valve device with a simple structure and not prone to getting stuck is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a valve device that is not only simple in structure but also not prone to getting stuck, thereby effectively improving its safety performance.

[0006] Another object of the present invention is to provide a central cabinet.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A valve device comprises an upper valve plate, a lower valve plate, a first mounting mechanism and a second mounting mechanism, wherein the upper valve plate and the lower valve plate are arranged between the first mounting mechanism and the second mounting mechanism from top to bottom in a vertical direction;

[0009] The first mounting mechanism and the second mounting mechanism each include an upper valve rack, a lower valve rack, a gear and a pushing mechanism;

[0010] The upper valve plate is connected to the upper valve rack, the lower valve plate is connected to the lower valve rack, the gear is arranged between the upper valve rack and the upper valve rack, and is respectively engaged with the upper valve rack and the lower valve rack, and the pushing mechanism is connected to the upper valve rack;

[0011] The pushing mechanism can drive the upper shutter rack to rise or fall, so as to drive the gear to rotate, and drive the lower shutter rack to move in the opposite direction to the upper shutter rack through the gear.

[0012] Optionally, it also includes a rack guide frame, one side of which is fixed on the central cabinet, and the other side is provided with a guide groove, the upper valve rack and the lower valve rack are both arranged in the guide groove, and the gear is arranged on the rack guide frame.

[0013] Optionally, the upper valve rack and the lower valve rack are both clearance-matched with the guide groove.

[0014] Optionally, the gear is mounted on the rack guide frame via a pin, and the gear can rotate on the pin.

[0015] Optionally, a plurality of first mounting holes are provided along the vertical direction of the upper valve rack, and the upper valve plate is connected to the upper valve rack through the first mounting holes;

[0016] A plurality of second mounting holes are provided along the vertical direction of the lower shutter rack, and the lower shutter plate is connected to the lower shutter rack through the second mounting holes.

[0017] Optionally, the pushing mechanism includes a crank arm support and a crank arm, one end of the crank arm support is fixed to the central cabinet, and the other end is mounted with the crank arm, and the crank arm is rotatably arranged on the crank arm support;

[0018] The crank arm includes a first connecting arm and a second connecting arm connected to each other, a preset angle is formed between the first connecting arm and the second connecting arm, a long hole is provided on the first connecting arm, and the upper valve rack is movably connected to the long hole through a connecting rod.

[0019] Optionally, the pushing mechanism further includes a pushing handle, and the pushing handle is arranged on the second connecting arm.

[0020] Optionally, the crank arm support includes a fixed end and a connecting end connected to each other, the fixed end and the connecting end are both cylindrical structures, the diameter of the connecting end is smaller than the diameter of the fixed end, and the crank arm is rotatably arranged on the connecting end;

[0021] The fixed end is further provided with a positioning pin, and the connecting end is further provided with a return spring, one end of the return spring is connected to the positioning pin, and the other end is connected to the first connecting arm.

[0022] Optionally, it further includes an elastic pin, which passes through the crank arm and is connected to the end surface of the connecting end;

[0023] The elastic pin includes an elastic pin body and a support arm, wherein the support arm is arranged on the elastic pin body;

[0024] The crank arm is also provided with a stop pin, which can abut against the support arm to limit the elastic pin.

[0025] A central cabinet comprises the valve device as described in any one of the above items.

[0026] It can be seen from the above technical solution that when the switch trolley is pushed into the central cabinet, the baffle on the switch trolley pushes the pushing mechanism to move in the direction of the upper valve plate, and the pushing mechanism drives the upper valve rack to rise, and the upper valve rack drives the gear to rotate. Under the rotation of the gear, the lower valve rack is pushed down in the reverse direction. At this time, the upper valve plate and the lower valve plate are in the open state; when the switch trolley is withdrawn, the baffle on the switch trolley withdraws and leaves the pushing mechanism, and the thrust exerted on the pushing mechanism gradually decreases. At this time, the pushing mechanism gradually returns to its initial state. During this process, the pushing mechanism drives the upper valve rack to descend, and the upper valve rack drives the gear to rotate. Under the rotation of the gear, the lower valve rack is pushed up in the reverse direction. At this time, the upper valve plate and the lower valve plate are in the closed state.

[0027] The valve device disclosed in the embodiment of the utility model has the following technical effects:

[0028] 1) The gear rack transmission method is more stable and reliable. Compared with the double-arm scissor cross type that uses a guide rod as a guide and the connecting rod directly pushes the valve plate, the gear rack transmission method has no deflection resistance and friction, is not easy to get stuck, and is more stable, smooth and reliable;

[0029] 2) Simple structure, fewer parts, easy processing and assembly, which can effectively reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0031] Figure 1 A schematic structural diagram of a valve device provided in an embodiment of the present utility model;

[0032] Figure 2 A schematic structural diagram of the closing action of the valve device provided in an embodiment of the present utility model;

[0033] Figure 3 A schematic structural diagram of the opening action of the valve device provided in an embodiment of the present utility model;

[0034] Figure 4 This is an enlarged structural diagram of the upper valve rack, lower valve rack and gear provided in an embodiment of the present utility model;

[0035] Figure 5 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0036] Description of reference numerals:

[0037] 100, upper valve plate; 200, lower valve plate; 300, upper valve rack; 400, lower valve rack; 500, gear; 600, pushing mechanism; 601, crank arm support; 6011, fixed end; 6012, connecting end; 6013, positioning pin; 6014, return spring; 602, first connecting arm; 6021, long hole; 603, second connecting arm; 604, push handle; 700, rack guide frame; 800, elastic pin; 900, stop pin. DETAILED DESCRIPTION

[0038] The core of the utility model is to provide a valve device which is not only simple in structure but also not easy to get stuck.

[0039] Another object of the present invention is to provide a central cabinet.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Please refer to Figures 1 to 4 .

[0041] Please refer to Figures 1 to 3 The valve device disclosed in the embodiment of the present invention includes an upper valve plate 100, a lower valve plate 200, a first mounting mechanism and a second mounting mechanism. The upper valve plate 100 and the lower valve plate 200 are arranged between the first mounting mechanism and the second mounting mechanism from top to bottom in the vertical direction.

[0042] Both the first and second mounting mechanisms include an upper valve rack 300, a lower valve rack 400, a gear 500, and a driving mechanism 600. The upper valve plate 100 is connected to the upper valve rack 300, while the lower valve plate 200 is connected to the lower valve rack 400. The gear 500 is positioned between the upper and lower valve racks 300, meshing with them respectively. The driving mechanism 600 is connected to the racks of the upper valve plate 100. The driving mechanism 600 drives the upper valve rack 300 upward or downward, thereby rotating the gear 500. This, in turn, drives the lower valve rack 400 in the opposite direction of the upper valve rack 300 via the gear 500.

[0043] When the switch trolley is pushed into the middle cabinet, the baffle on the switch trolley pushes the pushing mechanism 600 to move in the direction of the upper valve plate 100, and the pushing mechanism 600 drives the upper valve rack 300 to rise, and the upper valve rack 300 drives the gear 500 to rotate. Under the rotation action of the gear 500, the lower valve rack 400 is pushed down in the opposite direction. At this time, the upper valve plate 100 and the lower valve plate 200 are in the open state; when the switch trolley is withdrawn, the baffle on the switch trolley withdraws and leaves the pushing mechanism 600, and the thrust exerted on the pushing mechanism 600 gradually decreases. At this time, the pushing mechanism 600 gradually returns to its initial state. In this process, the pushing mechanism 600 drives the upper valve rack 300 to descend, and the upper valve rack 300 drives the gear 500 to rotate. Under the rotation action of the gear 500, the lower valve rack 400 is pushed up in the opposite direction. At this time, the upper valve plate 100 and the lower valve plate 200 are in the closed state.

[0044] The valve device disclosed in the embodiment of the utility model has the following technical effects:

[0045] 1) The gear rack transmission method is more stable and reliable. Compared with the double-arm scissor cross type that uses a guide rod as a guide and the connecting rod directly pushes the valve plate, the gear rack transmission method has no deflection resistance and friction, is not easy to get stuck, and is more stable, smooth and reliable;

[0046] 2) Simple structure, fewer parts, easy processing and assembly, which can effectively reduce costs.

[0047] As a further embodiment, the valve device disclosed in the embodiment of the present utility model also includes a rack guide frame 700, wherein one side of the rack guide frame 700 is fixed on the central cabinet, and a guide groove is provided on the other side, the upper valve rack 300 and the lower valve rack 400 are both arranged in the guide groove, and the gear 500 is arranged on the rack guide frame 700.

[0048] Wherein, upper valve rack 300 and lower valve rack 400 are all matched with the guide groove clearance. Such arrangement can ensure that upper valve rack 300 and lower valve rack 400 slide stably and reliably in the guide groove without deviating or even falling off.

[0049] It should be noted that, in the valve device disclosed in the embodiment of the present invention, the gear 500 is mounted on the rack guide frame 700 via a pin shaft, and the gear 500 can rotate on the pin shaft.

[0050] As a further example, please refer to Figure 4 The valve device disclosed in the embodiment of the present utility model is provided with multiple first mounting holes along the vertical direction of the upper valve rack 300, and the upper valve plate 100 is connected to the upper valve rack 300 through the first mounting holes; a plurality of second mounting holes are provided along the vertical direction of the lower valve rack 400, and the lower valve plate 200 is connected to the lower valve rack 400 through the second mounting holes.

[0051] With this arrangement, the position of the upper shutter plate 100 on the upper shutter rack 300 is adjustable, and the position of the lower shutter plate 200 on the lower shutter rack 400 is adjustable. Therefore, the upper shutter plate 100 and the lower shutter can correspond to the contact arm positions on different circuit breaker trolleys, making them suitable for circuit breaker trolleys of various specifications, greatly improving versatility.

[0052] The embodiment of the present invention does not limit the specific structure of the pushing mechanism 600. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0053] As an example, please refer to Figure 5 The pushing mechanism 600 disclosed in the embodiment of the present utility model includes a crank arm support 601 and a crank arm. One end of the crank arm support 601 is fixed on the central cabinet, and the other end is equipped with a crank arm, which is rotatably arranged on the crank arm support 601.

[0054] Specifically, the crank arm includes a first connecting arm 602 and a second connecting arm 603 connected to each other. There is a preset angle between the first connecting arm 602 and the second connecting arm 603. A long hole 6021 is also provided along the length direction of the first connecting arm 602. The upper valve rack 300 is movably connected to the long hole 6021 through a connecting rod.

[0055] Among them, the setting of the long hole 6021 allows the connecting rod to have a certain sliding space in the long hole 6021, so as to eliminate the lateral pulling force on the upper valve rack 300 when the crank arm pushes the upper valve rack 300, and ensure that the upper valve rack 300 moves smoothly up and down in the guide groove.

[0056] To ensure smooth contact between the switch trolley and the pushing mechanism 600, the pushing mechanism 600 disclosed in the embodiment of the present invention further includes a push handle 604, wherein the push handle 604 is disposed on the second connecting arm 603. When the switch trolley is pushed into the central cabinet, it contacts the push handle 604, which drives the pushing mechanism 600 to move.

[0057] The embodiment of the present invention does not limit the specific structure of the crank arm support 601. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0058] As one of the examples, please refer to Figure 5 The crank arm support 601 disclosed in the embodiment of the present utility model includes a connected fixed end 6011 and a connecting end 6012. The fixed end 6011 and the connecting end 6012 are both cylindrical structures. The diameter of the connecting end 6012 is smaller than the diameter of the fixed end 6011. The crank arm is rotatably arranged at the connecting end 6012.

[0059] The fixed end 6011 is further provided with a positioning pin 6013 , and the connecting end 6012 is further provided with a return spring 6014 . One end of the return spring 6014 is connected to the positioning pin 6013 , and the other end is connected to the first connecting arm 602 .

[0060] Among them, the crank arm is pushed upward to push the upper valve plate 100 to open, and the return spring 6014 is compressed to store energy; when the force on the crank arm is reduced, the return spring 6013 releases the pressure to make the crank arm rotate downward, and the upper valve plate 100 is reset and closed.

[0061] The embodiment of the present invention does not limit the specific structure of the return spring 6014. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0062] For ease of installation, the reset spring 6014 disclosed in the embodiment of the present invention is preferably a torsion spring, wherein each end of the torsion spring has a torsion arm, one torsion arm is hooked on the positioning pin 6013, and the other torsion arm is hooked on the first connecting arm 602.

[0063] As a further embodiment, the valve device disclosed in the embodiment of the present invention further includes an elastic pin 800 , which passes through the crank arm and is connected to the end surface of the connecting end 6012 .

[0064] Specifically, the elastic pin 800 includes an elastic pin body and a support arm, and the support arm is provided on the elastic pin body.

[0065] A stop pin 900 is also provided on the crank arm, and the stop pin 900 can abut against the support arm to limit the elastic pin 800.

[0066] In this arrangement, the elastic pin 800 can limit the lateral displacement of the crank arm and also limit the rotation angle of the crank arm. When the crank arm moves in the direction away from the upper valve plate 100, the support arm of the elastic pin 800 can abut against the stop pin 900, thereby limiting the rotation angle of the crank arm.

[0067] An embodiment of the present utility model further discloses a central cabinet, comprising the valve device disclosed in any one of the above embodiments.

[0068] Since the central cabinet adopts the valve device disclosed in the above embodiment, the central cabinet has the technical advantages of the valve device disclosed in the above embodiment, and the embodiments of the present utility model will not be described in detail.

[0069] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0070] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0071] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A valve device, characterized in that: The utility model comprises an upper valve plate, a lower valve plate, a first mounting mechanism and a second mounting mechanism, wherein the upper valve plate and the lower valve plate are arranged between the first mounting mechanism and the second mounting mechanism from top to bottom in the vertical direction; The first mounting mechanism and the second mounting mechanism each include an upper valve rack, a lower valve rack, a gear and a pushing mechanism; The upper valve plate is connected to the upper valve rack, the lower valve plate is connected to the lower valve rack, the gear is arranged between the upper valve rack and the upper valve rack, and is respectively engaged with the upper valve rack and the lower valve rack, and the pushing mechanism is connected to the upper valve rack; The pushing mechanism can drive the upper shutter rack to rise or fall, so as to drive the gear to rotate, and drive the lower shutter rack to move in the opposite direction to the upper shutter rack through the gear.

2. The valve device according to claim 1, characterized in that It also includes a rack guide frame, one side of which is fixed on the central cabinet, and the other side is provided with a guide groove, the upper movable door rack and the lower movable door rack are both arranged in the guide groove, and the gear is arranged on the rack guide frame.

3. The valve device according to claim 2, characterized in that The upper valve rack and the lower valve rack are both clearance-matched with the guide groove.

4. The valve device according to claim 2, characterized in that The gear is mounted on the rack guide frame via a pin shaft, and the gear can rotate on the pin shaft.

5. The valve device according to claim 1, characterized in that A plurality of first mounting holes are provided along the vertical direction of the upper shutter rack, and the upper shutter plate is connected to the upper shutter rack through the first mounting holes; A plurality of second mounting holes are provided along the vertical direction of the lower shutter rack, and the lower shutter plate is connected to the lower shutter rack through the second mounting holes.

6. The valve device according to claim 2, characterized in that The pushing mechanism includes a crank arm support and a crank arm, one end of the crank arm support is fixed to the central cabinet, and the other end is equipped with the crank arm, and the crank arm is rotatably arranged on the crank arm support; The crank arm includes a first connecting arm and a second connecting arm connected to each other, a preset angle is formed between the first connecting arm and the second connecting arm, a long hole is provided on the first connecting arm, and the upper valve rack is movably connected to the long hole through a connecting rod.

7. The valve device according to claim 6, characterized in that The pushing mechanism further includes a pushing handle, which is arranged on the second connecting arm.

8. The valve device according to claim 6, characterized in that The crank arm support includes a fixed end and a connecting end connected to each other, the fixed end and the connecting end are both cylindrical structures, the diameter of the connecting end is smaller than the diameter of the fixed end, and the crank arm is rotatably arranged on the connecting end; The fixed end is further provided with a positioning pin, and the connecting end is further provided with a return spring, one end of the return spring is connected to the positioning pin, and the other end is connected to the first connecting arm.

9. The valve device according to claim 8, characterized in that It also includes an elastic pin, which passes through the crank arm and is connected to the end surface of the connecting end; The elastic pin includes an elastic pin body and a support arm, wherein the support arm is arranged on the elastic pin body; The crank arm is also provided with a stop pin, which can abut against the support arm to limit the elastic pin.

10. A central cabinet, characterized in that: Comprising the valve device according to any one of claims 1 to 9.

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