Valve mechanism

Abstract

The utility model relates to the field of switch cabinets, and provides a valve mechanism which comprises two parallel slide rails, a plate body and an end plate. Two sliding blocks are arranged at the two opposite ends of the plate body, one sliding block is arranged on one sliding rail in a sliding mode, and the plate body is an insulating plate. The connecting rod mechanism comprises a first connecting rod and a second connecting rod, an opening penetrating through the two ends is formed in one side of the sliding block, a limiting column penetrating through the opening is arranged on the sliding block, and a through opening allowing the sliding rail to penetrate through is formed between the limiting column and the bottom face of the opening. A hinge shaft is arranged between the end plate and the free end of the second connecting rod. The insulating plate has the advantages of electrical insulation performance, mechanical performance, thermal stability, chemical corrosion resistance and the like, so that the insulating plate has good material performance, and the use safety of the plate body is ensured. Limiting is carried out in the sliding block through the structure of the limiting column, so that the contact point of the sliding block and the sliding rail is an arc surface, namely a straight line. Friction resistance can be greatly reduced, a good sliding effect is achieved, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the field of switch cabinets, in particular to a valve mechanism. Background Art

[0002] There are various types of flap mechanisms for removable high-voltage switchgear, employing both rotating flaps and sliding doors. Each has its own unique characteristics, making them difficult to replace. The rotating flap mechanism is relatively simple, offers flexible and reliable operation, and requires minimal force, making it an ideal mechanism. However, to create a concealed space for the flap when opened, the contact shield must be designed with a front boss. This necessitates increasing the depth of the switchgear's front compartment, a depth increase proportional to the flap width. Therefore, this mechanism is often used in 10kV switchgear, where the contact shield has a smaller contact shield. The sliding door mechanism, on the other hand, is more complex due to its longer sliding travel and multiple transitions between rotation and translation, resulting in high force. While eliminating the need for a front boss for the contact shield can reduce the depth of the switchgear's front compartment, measures such as increasing the contact shield length are necessary to increase creepage distance. This mechanism is generally used in 35kV switchgear.

[0003] However, existing sliding mechanism designs often use pulleys that can easily wear out, leading to jamming later on. Alternatively, existing slide rails utilize a rack structure, which is relatively inconvenient for switching. Furthermore, existing panels are mostly metal (e.g., aluminum) and require epoxy coating, a process known as fluidized bed epoxy coating. This process is complex and prone to deformation under stress, increasing production costs. Utility Model Content

[0004] The purpose of the utility model is to provide a valve mechanism, aiming to improve the problem that the plate body of the existing valve mechanism is complicated to manufacture and relatively inconvenient to use.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a valve mechanism, comprising:

[0006] Two slide rails are provided parallel to each other;

[0007] A plate body, with two sliders provided on opposite ends thereof, one of the sliders being slidably provided on one of the slide rails, and the plate body being an insulating plate;

[0008] A connecting rod mechanism comprising a first connecting rod and a second connecting rod hingedly connected at one end of the first connecting rod, the other end of the first connecting rod being hingedly connected to the slider, one side of the slider being provided with an opening extending through both ends, the slider being provided with a limiting post extending through the opening, and a through opening for the slide rail to pass through being formed between the limiting post and the bottom surface of the opening; and

[0009] The end plate has a hinge shaft disposed between it and the free end of the second connecting rod.

[0010] Preferably, there are two sets of the link mechanism and the end plate, and one set of the link mechanism is arranged on one of the sliders.

[0011] Preferably, there are multiple sets of the plate bodies, and there are multiple sets of the link mechanism and the end plate; every two sets of the link mechanisms are symmetrically arranged on two of the sliders on one of the plate bodies.

[0012] Preferably, a protection column opposite to the limiting column is arranged in the opening, and the distance between the protection column and the limiting column forms the through port;

[0013] A locking piece fixedly connected to the plate body is arranged on the other side of the slider.

[0014] Preferably, the second link is an L-shaped crank link, and a convex shaft is arranged at the corner of the crank link.

[0015] Preferably, a locking plate is arranged on the top of the slide rail.

[0016] Preferably, a cross hole is arranged on the locking plate, and a flat protrusion engaged with the cross hole is arranged on the top of the slide rail.

[0017] Preferably, the slide rail is an elliptical cylinder or a polygonal prism.

[0018] Preferably, symmetrical avoidance gaps are arranged at both ends of the plate body.

[0019] After adopting the above technical solution, compared with the background technology, the utility model has the following advantages:

[0020] 1. The plate body is designed with an insulating plate, and the insulating plate is composed of GF (special yarn), UP (unsaturated resin), low shrinkage additive, MD (filler) and various additives. It has the advantages of electrical insulation performance, mechanical performance, thermal stability, chemical corrosion resistance, etc., so it has good material properties and ensures the safety of the use of the plate body.

[0021] 2. The limiting is carried out through the structure of the limiting column in the slider, so that the contact point with the slide rail is an arc surface, that is, a straight line. The friction resistance can be greatly reduced, and it has a good sliding effect, improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the valve mechanism described in the utility model;

[0023] Figure 2 is a front view of the valve mechanism described in the utility model;

[0024] Figure 3This is a partial view of the valve mechanism of the present utility model.

[0025] Explanation of reference numerals in the drawings:

[0026] 10. Slide rail; 101. Locking plate; 102. Linear protrusion;

[0027] 1011. Cross hole;

[0028] 20. Plate body; 201. Slide block; 202. Limit post; 203. Through port; 204. Protection post; 205. Locking piece; 206. Avoidance notch;

[0029] 30. Linkage mechanism; 301. First link; 302. Second link; 303. Convex shaft;

[0030] 40. End plate; 401. Hinge shaft. Detailed implementation manners

[0031] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] In addition, it should be noted that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the devices or components of the present utility model must have a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.

[0033] When an element is referred to as being "fixed to" or "disposed on" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] Embodiment

[0036] Please refer to Figure 1 、Figure 2 and Figure 3 As shown in Figure 3 , this embodiment provides a valve mechanism, which includes two parallel slide rails 10, a plate body 20 and an end plate 40. There are two slide rails 10 arranged in parallel; two sliders 201 are arranged on the opposite ends of the plate body 20, and one slider 201 is slidably arranged on one slide rail 10. The plate body 20 is an insulating plate. The link mechanism 30 includes a first link 301 and a second link 302 hinged to one end of the first link 301. The other end of the first link 301 is hinged to the slider 201. An opening penetrating both ends is arranged on one side of the slider 201. A limiting column 202 penetrating the opening is arranged on the slider 201, and a through hole 203 for the slide rail 10 to pass through is formed between the limiting column 202 and the bottom surface of the opening. A hinge shaft 401 is arranged between the end plate 40 and the free end of the second link 302.

[0037] Specifically, the plate body 20 is installed on the slide rails 10 by symmetrically arranging the two slide rails 10, locking the slide rails 10, and also locking and fixing the end plate 40. By driving the link mechanism 30 installed on the slider 201, the slider 201 is driven, that is, by driving the first link 301 and / or the second link 302 to rotate, the slider 201 moves along the slide rail 10, and then the purpose of driving the plate body 20 is achieved, realizing the valve effect of convenient driving.

[0038] In use, the plate body 20 is designed with an insulating plate. The insulating plate is composed of GF (special yarn), UP (unsaturated resin), low shrinkage additives, fillers and various additives. It has the advantages of electrical insulation performance, mechanical properties, thermal stability, chemical corrosion resistance, etc. Therefore, it has good material properties and ensures the safety of the use of the plate body 20.

[0039] Regarding the fit between the slide rail 10 and the slider 201, a limiting column 202 is designed. In this way, the contact point with the slide rail 10 is an arc surface, that is, a straight line or a point contact, which can greatly reduce the frictional resistance, has a good sliding effect, and improves the practicability.

[0040] Furthermore, as Figure 3 shown, in this embodiment, a protective column 204 opposite to the limiting column 202 is arranged in the opening. The distance between the protective column 204 and the limiting column 202 forms the through hole 203. A locking piece 205 fixedly connected to the plate body 20 is arranged on the other side of the slider 201. The through hole 203 formed by the relative arrangement of the protective column 204 and the limiting column 202 will greatly reduce the contact surface of the cylindrical structure with the slide rail 10, improve the sliding effect of the plate body 20, and is easy to maintain in the later stage, and the operation is simple and convenient.

[0041] Further, in this embodiment, the slide rail 10 is an elliptical cylinder or a polygonal prism, and preferably, the slide rail 10 can be a cylindrical structure. In this way, the friction between the slide rail 10 and the slider 201 is small, and at the same time, the plate body 20 can slide smoothly along the slide rail 10, improving the practicality of use.

[0042] In this embodiment, there are two sets of link mechanisms 30 and end plates 40. One set of link mechanisms 30 is arranged on one slider 201. In this way, the plate body 20 has a symmetric design of link mechanisms 30 and end plates 40, that is, the two sets of link mechanisms 30 are used to synchronously drive the plate body 20 to move, ensuring good stability during the movement of the plate body 20 and improving the smoothness.

[0043] In this embodiment, there are multiple sets of plate bodies 20, and there are multiple sets of link mechanisms 30 and end plates 40; every two sets of link mechanisms 30 are symmetrically arranged on two sliders 201 on one plate body 20. The number of plate bodies 20 can be designed according to the requirements of the switch cabinet, and multiple sets can be installed at intervals along the slide rail 10. By calculating the moving stroke of the plate body 20, the interval distance can be ensured to prevent collisions between the plate bodies 20. In this way, the design of arranging multiple plate bodies 20 on the slide rail 10 is achieved. Correspondingly, the link mechanisms 30 and end plates 40 on the plate body 20 can be installed and used in a matching manner.

[0044] In this embodiment, the second link 302 is an L-shaped crank link, and a convex shaft 303 is arranged at the corner of the crank link. The design of the crank link has an avoidance effect, that is, when multiple sets of link mechanisms 30 are installed on the end plate 40, the crank link structure can avoid other crank links, preventing a large amount of trajectory overlap between the two second links 302, and can be arranged more flexibly. The convex shaft 303 at the corner of the crank link can provide a connection point with the second link 302 and achieve a linkage effect.

[0045] As Figure 1 and Figure 2 shown, in this embodiment, a locking plate 101 is arranged on the top of the slide rail 10. The design of the locking plate 101 can achieve the purpose of fixing the top end of the slide rail 10. That is, through holes can be arranged on the locking plate 101, and screws or bolts can be used for locking to achieve the purpose of fixing the slide rail 10.

[0046] Further, as Figure 3 shown, in this embodiment, a cross hole 1011 is arranged on the locking plate 101, and a single-character protrusion 102 that engages with the cross hole is arranged on the top of the slide rail 10. In this way, the slide rail 10 can be inserted into the cross hole 1011, and then fixed with nuts or pins to form a connection. The design of the cross and single-character protrusion 102 can position and install the slide rail 10, prevent the slide rail 10 from rotating, and improve the stability of the structure.

[0047] As Figure 2 shown, in this embodiment, symmetrical avoidance gaps 206 are provided at both ends of the plate body 20, that is, a notch structure can be formed at the end of the plate body 20. The notch can be rectangular, fan-shaped, etc., or other irregular figures designed otherwise. Preferably, taking the rectangle as an example, the structure of the switch cabinet can be avoided in this way to ensure the structural design of the switch cabinet.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A valve mechanism, characterized in that: include: Two slide rails are provided parallel to each other; A plate body, with two sliders provided on opposite ends thereof, one of the sliders being slidably provided on one of the slide rails, and the plate body being an insulating plate; A connecting rod mechanism comprising a first connecting rod and a second connecting rod hingedly connected at one end of the first connecting rod, the other end of the first connecting rod being hingedly connected to the slider, one side of the slider being provided with an opening extending through both ends, the slider being provided with a limiting post extending through the opening, and a through opening for the slide rail to pass through being formed between the limiting post and the bottom surface of the opening; and The end plate has a hinge shaft disposed between it and the free end of the second connecting rod.

2. The valve mechanism according to claim 1, characterized in that: The connecting rod mechanism and the end plate are provided in two groups, and one group of the connecting rod mechanism is provided on one of the sliding blocks.

3. The valve mechanism according to claim 1, wherein: The plate body is provided with multiple groups, and the connecting rod mechanism and the end plate are provided with multiple groups; every two groups of the connecting rod mechanism are symmetrically arranged on two sliding blocks on one of the plate bodies.

4. The valve mechanism according to claim 1, wherein: A protective column is provided in the opening and is arranged opposite to the limiting column, and the distance between the protective column and the limiting column forms the through opening: A locking piece that is locked and connected to the plate body is provided on the other side of the sliding block.

5. The valve mechanism according to claim 1, characterized in that: The second connecting rod is an L-shaped crank arm connecting rod, and a convex shaft is provided on the corner of the crank arm connecting rod.

6. The valve mechanism according to claim 1, characterized in that: A locking plate is provided on the top of the slide rail.

7. The valve mechanism according to claim 6, characterized in that: The locking plate is provided with a cross hole, and the top of the slide rail is provided with a straight protrusion engaged with the cross hole.

8. The valve mechanism according to claim 1, wherein: The slide rail is an elliptical column or a polygonal prism.

9. The valve mechanism according to claim 1, characterized in that: Symmetrical avoidance gaps are provided at both ends of the plate body.

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