Gear linkage lock device for high-voltage equipment box of rail transit

Abstract

The utility model relates to the technical field of gear linkage lock, specifically relates to a rail transit high -voltage equipment box gear linkage lock device. The utility model discloses panel, and the gear transmission mechanism and linkage limiting mechanism of setting on the panel, gear transmission mechanism includes the handle at the face of panel, and the gear, rack and lock bolt at the back of panel, the bottom of the rectangle frame of rack is provided with the lock bolt of the downward extension setting, and the top of rectangle frame is formed door and is hit to the up convex, linkage limiting mechanism includes the lock cylinder at the face of panel, and the linkage lock and limiting shaft at the back of panel, and limiting shaft is set in the top of rectangle frame above transversely, and extends to the rack top and carries out the limiting, the utility model discloses the integrated combination mechanism of gear transmission mechanism and linkage limiting mechanism, realizes the stable opening and locking of door lock under the high frequency vibration scene of rail transit, satisfies the long -term safe use demand of rail transit high -voltage equipment box.

Description

Technical Field

[0001] This utility model relates to the field of gear linkage lock technology, specifically to a gear linkage lock device for a high-voltage equipment box in rail transit. Background Technology

[0002] Today, as rail transit continues to increase its operating speed, it places more diverse demands on high-voltage equipment box locks in terms of safety, stability, and adaptability. Taking the concealed smart door lock disclosed in Chinese Patent Publication No. CN216429308U as an example, existing door lock devices have many problems. For example, their structural stability is poor; the rack and pinion mechanism, when used in conjunction with the rectangular frame, is prone to displacement due to long-term use or the high-frequency vibrations of rail transit, and lacks reliable limiting after locking, posing risks of bolt self-retraction and accidental door opening; they are mostly split mechanisms, which are difficult to manufacture, have long production cycles, and are difficult to reduce costs; their operation is not smooth enough, with high frictional resistance between moving parts, which can easily cause jamming after long-term use, affecting the user experience and failing to meet the long-term safe use requirements of rail transit equipment boxes. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a gear linkage lock device for high-voltage equipment boxes in rail transit.

[0004] The technical solution adopted in this utility model is as follows: A gear linkage lock device for a high-voltage equipment box in rail transit includes a panel, and a gear transmission mechanism and a linkage limit mechanism disposed on the panel, wherein: The gear transmission mechanism includes a handle located on the front of the panel, and a gear, rack, and latch located on the back of the panel; the handle is connected to the gear through the panel via a pivot, and the gear and rack mesh with each other; the rack is confined to the inside of two vertically arranged retainers; a latch extending downward is provided at the bottom of the rectangular frame where the rack is located, and the top of the rectangular frame protrudes upward to form a door stop; The linkage limiting mechanism includes a lock cylinder located on the front of the panel, and a linkage lock and a limiting shaft located on the back of the panel; the lock cylinder passes through the panel and is connected to the linkage lock, and the linkage lock synchronously drives the limiting shaft to move; the limiting shaft is horizontally positioned above the rectangular frame and extends to the top of the rack for limiting.

[0005] This technical solution achieves stable opening and closing of the door lock under high-frequency vibration scenarios in rail transit by integrating a gear transmission mechanism and a linkage limiting mechanism, meeting the long-term safe use requirements of high-voltage equipment boxes in rail transit. Specifically, the gear transmission mechanism converts the rotational motion of the handle into the linear motion of the rack, driving the extension and retraction of the latch; simultaneously, the linkage limiting mechanism controls the linkage lock and the limiting shaft through the lock cylinder to limit the rack, ensuring that the latch will not retract due to vibration after locking, thus achieving door lock stability and safety.

[0006] In addition, the gear linkage lock device for high-voltage equipment boxes in rail transit proposed above according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, a stop strip I is provided above the panel, and a groove for cooperating with a door stop is provided below the stop strip I. The stop strip I is located at the highest point of the rack. A stop strip II is provided below the panel, and the stop strip II is located at the lowest point of the rack.

[0007] This technical solution utilizes stop bar I and stop bar II to limit the rectangular frame. Stop bar I is located at the highest point of the rack and is equipped with a groove that engages with the door stop. When the rack moves the bolt upward to the open position, the door stop can fall into the groove. At the same time, stop bar I restricts the rack from moving further upward to prevent over-opening. Stop bar II is located at the lowest point of the rack. When the rack moves the bolt downward to the closed position, stop bar II prevents the rack from moving further downward, ensuring that the bolt is accurately inserted into the lock hole and achieving precise limiting.

[0008] According to one embodiment of the present invention, the retainer is U-shaped in cross-section, and a limiting groove that cooperates with a rectangular frame is provided in the middle of the retainer, and a gasket is provided in the limiting groove; limiting vertical plates are provided at both ends of the retainer.

[0009] In this technical solution, the central limiting groove, through its cooperation with the rectangular frame, achieves axial positioning and prevents it from deviating from the track; the gasket reduces friction between the handle and the door panel when rotating, improving the smoothness of operation; the limiting vertical plates at both ends constitute a limit to prevent the gasket from detaching from the retainer.

[0010] According to one embodiment of the present invention, an O-ring is provided between the lock cylinder and the panel.

[0011] In this technical solution, the O-ring is used for sealing, and the double-layer sealing ring can block dust and moisture intrusion, achieving an IP55 protection level.

[0012] According to one embodiment of the present invention, a transparent observation window is provided on the side of the panel.

[0013] In this technical solution, the observation window is a visual window that allows for an intuitive view of the working status of the internal gears, racks, and locking tongues, facilitating daily inspections and troubleshooting.

[0014] Compared with the prior art, this utility model has the following advantages: By integrating the gear transmission mechanism and the linkage limit mechanism, the door lock can be stably opened and closed in the high-frequency vibration scenario of rail transit, thus meeting the long-term safe use requirements of rail transit high-voltage equipment boxes. Attached Figure Description

[0015] Figure 1 This is an internal diagram of this utility model.

[0016] Figure 2 This is one of the outline diagrams of this utility model.

[0017] Figure 3 This is the second outline drawing of this utility model.

[0018] Figure 4 This is a side view of the present invention.

[0019] Figure 5 This is a schematic diagram of the cage structure.

[0020] In the diagram: 1. Panel; 2. Handle; 3. Gear; 4. Rack; 5. Cage; 51. Limiting groove; 52. Limiting vertical plate; 6. Cover; 7. Door stop; 8. Stop bar I; 9. Lock tongue; 10. Stop bar II; 11. Limiting shaft; 12. Linkage lock; 13. Lock cylinder; 14. Observation window. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1 like Figures 1 to 4 As shown, this embodiment provides a gear linkage lock device for a high-voltage equipment box in rail transit, including a panel 1, and a gear transmission mechanism and a linkage limiting mechanism disposed on the panel 1, wherein: The gear transmission mechanism includes a handle 2 located on the front of the panel 1, and a gear 3, a rack 4, and a latch 9 located on the back of the panel 1; the handle 2 is connected to the gear 3 through the panel 1 via a rotating shaft, and the gear 3 and the rack 4 mesh with each other; the rack 4 is confined to the inside of two vertically arranged retainers 5; the bottom of the rectangular frame where the rack 4 is located is provided with a latch 9 that extends downward, and the top of the rectangular frame protrudes upward to form a door stop 7; The linkage limiting mechanism includes a lock cylinder 13 located on the front of the panel 1, and a linkage lock 12 and a limiting shaft 11 located on the back of the panel 1. The lock cylinder 13 passes through the panel 1 and is connected to the linkage lock 12. The linkage lock 12 synchronously drives the limiting shaft 11 to move. The limiting shaft 11 is horizontally positioned above the rectangular frame and extends to the top of the rack 4 for limiting.

[0023] like Figures 1 to 4As shown, this technical solution achieves stable opening and closing of the door lock under high-frequency vibration scenarios in rail transit through an integrated combination mechanism of gear transmission and linkage limiting mechanism, meeting the long-term safe use requirements of high-voltage equipment boxes in rail transit. Specifically, the gear transmission mechanism converts the rotational motion of the handle 2 into the linear motion of the rack 4, driving the bolt 9 to extend and retract; simultaneously, the linkage limiting mechanism controls the linkage lock 12 and the limiting shaft 11 through the lock cylinder 13 to limit the rack 4, ensuring that the bolt 9 will not retract due to vibration after locking, thus achieving the stability and safety of the door lock.

[0024] In addition, the gear linkage lock device for high-voltage equipment boxes in rail transit proposed above according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, a stop strip I8 is provided above the panel, and a groove for cooperating with a door stop 7 is provided below the stop strip I8. The stop strip I8 is located at the highest point of the rack 4 when it is moved upward. A stop strip II10 is provided below the panel, and the stop strip II10 is located at the lowest point of the rack 4 when it is moved downward.

[0025] This technical solution utilizes stop bar I8 and stop bar II10 to limit the rectangular frame. Stop bar I8 is located at the highest point of the rack 4 and is equipped with a groove that cooperates with the door stop 7. When the rack 4 moves the bolt 9 upward to the open position, the door stop 7 can fall into the groove. At the same time, stop bar I8 restricts the rack 4 from moving upward further to prevent over-opening. Stop bar II10 is located at the lowest point of the rack 4. When the rack 4 moves the bolt 9 downward to the locked position, stop bar II10 blocks the rack 4 from moving downward further, ensuring that the bolt 9 is accurately inserted into the lock hole and achieving precise limiting.

[0026] like Figure 5 As shown, the retainer 5 is U-shaped in cross section, and a limiting groove 51 that cooperates with the rectangular frame is provided in the middle of the retainer 5. A gasket is provided in the limiting groove 51; limiting vertical plates 52 are provided at both ends of the retainer 5.

[0027] In this technical solution, the central limiting groove 51, through its cooperation with the rectangular frame, achieves axial positioning and prevents it from deviating from the track; the gasket reduces friction between the handle and the door panel when rotating, improving the smoothness of operation; the limiting vertical plates 52 at both ends constitute a limit to prevent the gasket from deviating from the retainer 5.

[0028] According to one embodiment of the present invention, an O-ring is provided between the lock cylinder 13 and the panel 1.

[0029] In this technical solution, the O-ring is used for sealing, and the double-layer sealing ring can block dust and moisture intrusion, achieving an IP55 protection level.

[0030] According to one embodiment of the present invention, a transparent observation window 14 is provided on the side of the panel 1.

[0031] In this technical solution, the observation window 14 is a visualization window that allows for a direct view of the working status of the internal gears 3, racks 4, and locking tongues 9, facilitating daily inspections and troubleshooting. A protective cover 6 is also provided on the back of the panel 1.

[0032] The usage process of the above embodiments is as follows: like Figures 1 to 4 As shown, the locking process is as follows: The operator turns handle 2, which drives gear 3 to rotate via a shaft. Since gear 3 meshes with rack 4, the rotation of gear 3 drives the rectangular frame containing rack 4 to move downwards in a straight line along retainer 5. The U-shaped cross-section and limiting groove 51 of retainer 5 provide stable guidance for rack 4, the gasket reduces friction, and the limiting vertical plates 52 at both ends prevent the gasket from dislodging. The rectangular frame drives the bolt 9 to extend synchronously. When the bolt 9 is inserted into the door frame lock hole, the stop strip II 10 of panel 1 initially limits rack 4, indicating that the lock is in place. Finally, the operator turns lock cylinder 13 with key, and linkage lock 12 drives limiting shaft 11 to extend under the action of spring, locking the upper end face of rack 4 to achieve complete limiting and prevent vibration from causing bolt 9 to retract on its own. like Figures 1 to 4 As shown, the opening process is as follows: The operator uses the key to turn the lock cylinder 13 in the opposite direction, which causes the linkage limit shaft 11 to retract, releasing the limit on the rack 4; then, the operator turns the handle 2, which drives the rotating shaft and gear 3 to rotate in the opposite direction. The gear 3 drives the rectangular frame containing the rack 4 to move upward in a straight line along the track; the rectangular frame drives the latch 9 to retract upward in sync until the latch 9 is completely disengaged from the door frame lock hole; after the latch 9 retracts, the door stop 7 is attracted into the slot on the stop bar I8, which limits the rectangular frame and restricts the rack 4 from moving upward, preventing over-opening. At this time, the door of the high-voltage equipment box can be stably kept open.

[0033] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A gear linkage lock device for a high-voltage equipment box in rail transit, characterized in that, Includes a panel (1), and a gear transmission mechanism and a linkage limiting mechanism disposed on the panel (1), wherein: The gear transmission mechanism includes a handle (2) located on the front of the panel (1), and a gear (3), a rack (4), and a latch (9) located on the back of the panel (1); the handle (2) is connected to the gear (3) through the panel (1) via a rotating shaft, and the gear (3) and the rack (4) mesh with each other; the rack (4) is confined to the inside of two vertically arranged retainers (5); a latch (9) extending downward is provided at the bottom of the rectangular frame where the rack (4) is located, and the top of the rectangular frame protrudes upward to form a door stop (7); The linkage limiting mechanism includes a lock cylinder (13) located on the front of the panel (1), and a linkage lock (12) and a limiting shaft (11) located on the back of the panel (1). The lock cylinder (13) passes through the panel (1) and is connected to the linkage lock (12). The linkage lock (12) drives the limiting shaft (11) to move synchronously. The limiting shaft (11) is horizontally positioned above the rectangular frame and extends to the top of the rack (4) for limiting.

2. The gear linkage lock device for high-voltage equipment boxes in rail transit as described in claim 1, characterized in that, A stop bar I (8) is provided above the panel (1), and a slot that cooperates with the door stop (7) is provided below the stop bar I (8). The stop bar I (8) is located at the highest point of the rack (4).

3. The gear linkage lock device for high-voltage equipment boxes in rail transit as described in claim 1 or 2, characterized in that, A stop bar II (10) is provided below the panel (1), and the stop bar II (10) is located at the lowest point of the rack (4) when it is lowered.

4. The gear linkage lock device for high-voltage equipment boxes in rail transit as described in claim 1, characterized in that, The retainer (5) is U-shaped in cross section. A limiting groove (51) that cooperates with a rectangular frame is provided in the middle of the retainer (5). A gasket is provided in the limiting groove (51). Limiting vertical plates (52) are provided at both ends of the retainer (5).

5. The gear linkage lock device for high-voltage equipment boxes in rail transit as described in claim 1, characterized in that, An O-ring is provided between the lock cylinder (13) and the panel (1).

6. The gear linkage lock device for high-voltage equipment boxes in rail transit as described in claim 1, characterized in that, A transparent viewing window (14) is provided on the side of the panel (1).

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