Valve mechanism of switch cabinet

Abstract

The utility model discloses a switch cabinet valve mechanism, which comprises two parallel guide rods, an upper valve, a lower valve, an upper crank arm, a lower crank arm, a torsion spring and a fixed seat, the upper connecting arm and the lower connecting arm are respectively provided with a fixed lock hole, the upper side and the lower side of the fixed seat are respectively provided with an upper lock hole and a lower lock hole, and when the upper valve and the lower valve are closed, the upper lock hole and the lower lock hole are locked. The fixing lock hole of the upper connecting arm can be just aligned with the lower lock hole of the fixing seat, and the fixing lock hole of the lower connecting arm can be just aligned with the upper lock hole of the fixing seat. The fixing lock holes are formed in the upper connecting arm and the lower connecting arm and are aligned with the corresponding lock holes in the fixing seat, and effective locking can be achieved when the upper valve and the lower valve are closed. The design ensures that the valve is not easy to open even under the condition of external impact, so that the safety of operators is greatly improved. An additional safety guarantee layer is added to a locking mechanism, and the risk that the valve is opened accidentally due to mechanical faults or unforeseen circumstances is reduced.

Description

Technical Field

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

[0002] With the development of power systems, the safety and reliability requirements for electrical equipment are becoming increasingly stringent. Switchgear, an integral component of power systems, typically houses various high-voltage and low-voltage electrical components. To protect these components from environmental influences and prevent unauthorized access to live components, which could lead to safety incidents, switchgear is typically equipped with a valve mechanism to seal and manage the internal space. For an example of a common valve mechanism, see the switchgear valve mechanism disclosed in Application No. 2018110485986.

[0003] The above-mentioned valve mechanism relies solely on the gravity of the upper valve and the mechanical force of the spring to maintain the closed state. This can easily cause the valve to open accidentally when subjected to external impact, increasing safety risks. To address the above issues, this application proposes a lockable switch cabinet valve mechanism to improve the safety of the valve. Utility Model Content

[0004] In view of the deficiencies in the background technology, the utility model provides a switch cabinet valve mechanism.

[0005] The technical solution adopted by the utility model is: a switch cabinet valve mechanism, comprising two parallel guide rods, an upper valve, a lower valve, an upper crank arm, a lower crank arm, a torsion spring and a fixed seat, the upper crank arm comprising an upper main arm rotatably connected to the upper valve and an upper connecting arm rotatably connected to the upper main arm, the upper connecting arm is rotatably connected to the rotating shaft on the fixed seat, the lower crank arm comprises a lower main arm rotatably connected to the lower valve and a lower connecting arm rotatably connected to the lower main arm, the lower connecting arm is rotatably connected to the rotating shaft on the fixed seat, the upper connecting arm and the lower connecting arm are both provided with fixed locking holes, and the upper and lower sides of the fixed seat are respectively provided with upper locking holes and lower locking holes, when the upper valve and the lower valve are closed, the fixed locking hole of the upper connecting arm can be exactly aligned with the lower locking hole of the fixed seat, and the fixed locking hole of the lower connecting arm can be exactly aligned with the upper locking hole of the fixed seat.

[0006] Furthermore, both ends of the upper valve and the lower valve are provided with guide holes that are slidably matched with the guide rods.

[0007] Furthermore, a plurality of through holes are evenly spaced apart on the outer walls at both ends of the upper valve and the lower valve.

[0008] Furthermore, the torsion spring is sleeved on the rotating shaft between the upper connecting arm and the lower connecting arm, and one end of the torsion spring is connected to the lower connecting arm, and the other end is connected to the fixing seat.

[0009] Furthermore, the fixing seat is bent toward one side of the rotating shaft to form a connecting plate, and a connecting groove connected to one end of the torsion spring is provided at the bottom of the connecting plate.

[0010] Furthermore, one end of the torsion spring connected to the lower connecting arm has a hook portion that is hooked on the lower connecting arm.

[0011] The beneficial effect of this utility model is that by providing fixed locking holes on the upper and lower connecting arms and aligning them with corresponding locking holes on the fixing base, the upper and lower valves can be effectively locked when closed. This design ensures that the valves will not easily open even under external impact, thereby greatly improving operator safety. The locking mechanism adds an additional layer of security, reducing the risk of accidental opening of the valves due to mechanical failure or unexpected circumstances.

[0012] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of the utility model when the valve is open.

[0014] Figure 2 This is a structural diagram of the valve of the utility model when it is closed.

[0015] Figure 3 It is a structural diagram of the fixed seat.

[0016] Figure 4 Schematic diagram of the torsion spring connection.

[0017] Figure 1-4 : 1. Guide rod; 2. Upper valve; 3. Lower valve; 4. Torsion spring; 5. Fixed seat; 6. Upper main arm; 7. Upper connecting arm; 8. Rotating shaft; 9. Lower main arm; 10. Lower connecting arm; 11. Fixed lock hole; 12. Upper lock hole; 13. Lower lock hole; 14. Guide hole; 15. Through hole; 16. Connecting plate; 17. Connecting groove; 18. Hook. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0020] The utility model provides a switch cabinet movable door mechanism.

[0021] In this embodiment, referring to Figure 1-4 The switch cabinet valve mechanism includes two parallel guide rods 1, an upper valve 2, a lower valve 3, an upper crank arm, a lower crank arm, a torsion spring 4 and a fixed base 5. The upper crank arm includes an upper main arm 6 rotatably connected to the upper valve and an upper connecting arm 7 rotatably connected to the upper main arm 6. The upper connecting arm 7 is rotatably connected to the rotating shaft 8 on the fixed base. The lower crank arm includes a lower main arm 9 rotatably connected to the lower valve and a lower connecting arm 10 rotatably connected to the lower main arm 9. The lower connecting arm 10 is rotatably connected to the rotating shaft 8 on the fixed base. The upper connecting arm and the lower connecting arm are both provided with fixed lock holes 11. The upper and lower sides of the fixed base are respectively provided with upper lock holes 12 and lower lock holes 13. When the upper and lower valves are closed, the fixed lock hole of the upper connecting arm can be exactly aligned with the lower lock hole of the fixed base, and the fixed lock hole of the lower connecting arm can be exactly aligned with the upper lock hole of the fixed base.

[0022] In the above technical solution, this design ensures that the valve can be physically locked through the keyhole when closed, increasing the safety and stability of the structure. Even if subjected to external impact, the valve is unlikely to open accidentally, thereby improving the safety of the operator.

[0023] like Figure 2 As shown, when the upper and lower valves are closed, the fixed lock hole of the upper connecting arm is aligned with the lower lock hole of the fixing seat, and the fixed lock hole of the lower connecting arm is aligned with the upper lock hole of the fixing seat, and then the two are locked using a pin shaft or a door lock to avoid accidental opening and improve safety of use.

[0024] Specifically, both ends of the upper valve and the lower valve are provided with guide holes 14 that are slidably matched with the guide rods.

[0025] By setting the guide hole, the upper and lower valves can slide smoothly along the guide rod.

[0026] Specifically, a plurality of through holes 15 are evenly spaced apart on the outer walls at both ends of the upper valve and the lower valve.

[0027] The through hole is used for rotational connection with the crank arm (upper crank arm and lower crank arm). When used, through holes of different heights can be selected to adapt to different working conditions.

[0028] Specifically, the torsion spring is sleeved on the rotating shaft between the upper connecting arm and the lower connecting arm, and one end of the torsion spring is connected to the lower connecting arm, and the other end is connected to the fixing seat.

[0029] The use of a torsion spring provides the valve with an automatic reset function, meaning that when no external force is applied, the valve will automatically return to the closed state. This not only facilitates operation but also further enhances the safety performance of the system, preventing potential dangers caused by forgetting to close the valve.

[0030] In addition, the existing torsion spring only drives the lower valve to close, while the upper valve closes by its own weight. Therefore, the upper valve is made of iron and the lower valve is made of aluminum. When the upper valve closes by its own weight, it may slide poorly or scrape, which may cause the upper valve to not close. The present application uses a torsion spring for bidirectional drive, that is, in the absence of external force, the torsion spring can simultaneously drive the upper and lower valves to reset, closing the upper and lower valves. This solves the problem of the upper valve not closing due to scraping or jamming. Furthermore, the upper and lower valves can be produced with the same material and mold, reducing production costs.

[0031] Specifically, the fixing seat is bent toward one side of the rotating shaft to form a connecting plate 16 , and a connecting groove 17 connected to one end of the torsion spring is provided at the bottom of the connecting plate 16 .

[0032] By setting up a special connection groove to connect the torsion spring, the stability of the torsion spring connection is ensured, and the loosening or falling off that may occur during long-term use is avoided, thereby ensuring the long-term effectiveness of the torsion spring function.

[0033] Specifically, one end of the torsion spring 4 connected to the lower connecting arm has a hook portion 18 hooked to the lower connecting arm 10 .

[0034] The hook design strengthens the connection strength between the torsion spring and the lower connecting arm, ensuring that the torsion spring can effectively transmit force to the valve, improving the reliability and durability of the overall structure.

[0035] Technical personnel please note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. A switch cabinet valve mechanism, comprising two parallel guide rods, an upper valve, a lower valve, an upper crank arm, a lower crank arm, a torsion spring, and a fixed seat, wherein the upper crank arm comprises an upper main arm rotatably connected to the upper valve and an upper connecting arm rotatably connected to the upper main arm, the upper connecting arm being rotatably connected to a rotating shaft on the fixed seat, the lower crank arm comprising a lower main arm rotatably connected to the lower valve and a lower connecting arm rotatably connected to the lower main arm, the lower connecting arm being rotatably connected to a rotating shaft on the fixed seat, characterized in that: The upper connecting arm and the lower connecting arm are both provided with fixed lock holes, and the upper and lower sides of the fixed base are respectively provided with upper lock holes and lower lock holes. When the upper valve and the lower valve are closed, the fixed lock hole of the upper connecting arm can be exactly aligned with the lower lock hole of the fixed base, and the fixed lock hole of the lower connecting arm can be exactly aligned with the upper lock hole of the fixed base.

2. The switch cabinet door mechanism according to claim 1, characterized in that: Both ends of the upper valve and the lower valve are provided with guide holes which are slidably matched with the guide rods.

3. The switch cabinet door mechanism according to claim 1, characterized in that: A plurality of through holes are evenly spaced on the outer walls at both ends of the upper valve and the lower valve.

4. The switch cabinet door mechanism according to claim 1, characterized in that: The torsion spring is sleeved on the rotating shaft between the upper connecting arm and the lower connecting arm, and one end of the torsion spring is connected to the lower connecting arm, and the other end is connected to the fixing seat.

5. The switch cabinet door mechanism according to claim 4, characterized in that: The fixing seat is bent toward one side of the rotating shaft to form a connecting plate, and a connecting groove connected to one end of the torsion spring is provided at the bottom of the connecting plate.

6. The switch cabinet door mechanism according to claim 4, characterized in that: One end of the torsion spring connected to the lower connecting arm is provided with a hook portion hooked on the lower connecting arm.

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