Tunnel protective door locking device

Abstract

The utility model relates to a tunnel protective door locking device which comprises a box body, a driving assembly is arranged on the box body, the driving assembly comprises a gear and driving racks, the gear is rotationally installed on the box body, a rotating piece is arranged on the box body, the driving racks are installed on the box body in a sliding mode and meshed with the gear, and bolts are arranged on the driving racks on the two sides. A limiting mechanism is arranged on the box body and comprises an ejector rod and a lock bolt, the ejector rod is installed on the supporting seat in a sliding mode, the lock bolt is arranged at one end of the ejector rod, and a driving piece and an elastic piece are arranged on the supporting seat; the rotating piece drives the gear to rotate to drive the driving racks on the two sides to move, the bolts at the two ends are inserted into the door frame, the driving piece drives the ejector rod to slide, the lock bolt abuts against one ends of the driving racks, the elastic piece pushes the ejector rod to abut against the ends, and the bolts and the door frame are fixed. And the safety in the tunnel is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of tunnel safety protection doors, and in particular to a locking device for tunnel protection doors. Background Art

[0002] Tunnel safety protection door is a special purpose door set up to block the safety needs of the air pressure shock wave source, so that the internal equipment is intact and not harmed by the air pressure shock wave. The tunnel protection door system has excellent explosion-proof performance and anti-explosion performance of both fireproof performance. It is generally used in railway tunnels, such as cross passages, repeater stations, substations and other caverns.

[0003] Tunnel protection doors are usually composed of door frames, door leaves, locking devices and control systems. The locking device is an indispensable component, and usually a clutch locking device and an electromechanical locking device are used. The clutch locking device has a complicated installation process, many small parts, and is inconvenient for subsequent maintenance. In the humid environment of the tunnel, the parts will rust and fail over time; the electromechanical locking device has many electrical components, the tunnel environment is poor, and power failure and aging of electrical equipment may occur over a long period of time. It is inconvenient to use in an emergency and cannot quickly and reliably lock the protection door. Utility Model Content

[0004] In order to solve the problem that the existing locking device cannot quickly and reliably lock the protective door, the present application provides a tunnel protective door locking device.

[0005] The present application provides a tunnel protection door locking device that adopts the following technical solution:

[0006] A locking device for a tunnel protective door, comprising a box body, the box body being fixedly mounted on the protective door, the box body being provided with a driving assembly, the driving assembly comprising a gear and a driving rack, the gear being rotatably mounted on the box body, the box body being provided with a rotating member for driving the gear to rotate, the driving rack being slidably mounted on the box body and being located at opposite sides of the gear, the driving rack being meshed with the gear, connecting rods being provided on the driving racks on both sides, the connecting rods being respectively located at both sides of the box body, a latch being provided at one end of the connecting rod, a supporting seat being provided on the box body, a limiting mechanism being provided on the supporting seat, the limiting mechanism comprising a push rod and a locking bolt, the push rod being slidably mounted on the supporting seat, the locking bolt being provided at one end of the push rod, one side of the locking bolt being pressed against one end of the driving rack, a driving member for driving the push rod to slide being provided on the supporting seat, and an elastic member for pushing the push rod to be pressed tight is provided on the supporting seat.

[0007] By adopting the above technical solution, when in use, the rotating part drives the gear to rotate, and the gear drives the driving racks on both sides to move in opposite directions. The driving rack drives the pins at both ends of the connecting rod to be inserted into the door frame. At this time, the driving part drives the top rod to slide, and the locking bolt at one end of the top rod is tightly pressed against one end of the driving rack. The elastic part pushes the top rod tightly. At this time, the position of the driving rack is fixed, and the pins at both ends are fixed to the door frame. The protective door is locked, and the protective door is locked quickly and reliably, effectively improving the safety inside the tunnel.

[0008] Optionally, the driving member includes a rotating shaft and a rotating handle, the rotating shaft is rotatably mounted on the supporting seat, the rotating handle is arranged on the rotating shaft, and one end of the rotating handle is rotatably connected to the push rod.

[0009] By adopting the above technical solution, the rotating shaft drives the rotating handle to rotate, and the rotating handle drives the push rod to move and then drives the lock bolt to move, so as to tighten and separate the driving rack, and the control effect is better.

[0010] Optionally, a through hole is provided on the rotating handle, a rotating hole is provided on the push rod, a pin is provided on the push rod at the rotating hole, one end of the rotating handle is located at the rotating hole, and the pin passes through the through hole of the rotating handle.

[0011] By adopting the above technical solution, when the rotating handle rotates, the rotating handle drives the pin shaft and then drives the push rod to move, and the pin shaft moves at the through hole of the rotating handle, and the operation of driving the push rod to move is more convenient.

[0012] Optionally, a sleeve is provided on the support seat, the push rod is slidably installed on the sleeve, and the elastic member includes a compression spring, the compression spring is provided in the sleeve, and one end of the compression spring is connected to the push rod.

[0013] By adopting the above technical solution, when the protective door needs to be opened, the handle is turned to drive the push rod to move. At this time, the compression spring is compressed, and the locking bolt at one end of the push rod is separated from the driving rack. At this time, the rotating part drives the gear to rotate and then drives the driving rack to slide, and the protective door is opened. When locking, the compression spring pushes the push rod to the locking bolt at one end of the push rod to press the driving rack tightly, so that fast and automatic locking can be achieved.

[0014] Optionally, an annular plate is provided on the push rod, and the annular plate is slidably installed in the sleeve, and one end of the compression spring is connected to one side of the annular plate.

[0015] By adopting the above technical solution, when the push rod slides, the annular plate pushes the compression spring to compress, and one side of the push rod is slidably connected to the sleeve through the annular plate, so the push rod is not easy to shake when moving.

[0016] Optionally, an adjusting screw is provided on the locking bolt, and one end of the adjusting screw is in contact with one end of the driving rack.

[0017] By adopting the above technical solution, the adjusting bolt is rotated to adjust the abutment position of the locking bolt, which is suitable for abutting and limiting the shorter exposed driving rack.

[0018] Optionally, the support seat and the box body are connected by bolts, and a gasket is provided between the support seat and the box body.

[0019] By adopting the above technical solution, the number of gaskets between the support seat and the box body is adjusted to adjust the position of the lock bolt, which is suitable for exposing a longer driving rack for limiting.

[0020] Optionally, the rotating member includes a rotating shaft and a handwheel, the rotating shaft is rotatably mounted on the box body, the gear is connected to the rotating shaft, the gear and the rotating shaft are coaxially arranged, and the handwheel is arranged at one end of the rotating shaft.

[0021] By adopting the above technical solution, the hand wheel is turned to drive the rotating shaft to rotate, and the rotating shaft drives the gear to rotate, so the operation of driving the gear to rotate is more convenient.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When in use, the gear rotates to drive the driving racks on both sides to move in opposite directions, and the driving rack drives the pins at both ends of the connecting rod to be inserted into the door frame. At this time, the driving member drives the top rod to slide, and the lock bolt at one end of the top rod is pressed against one end of the driving rack. The elastic member pushes the top rod tightly, and the position of the driving rack is fixed. The pins at both ends are fixed to the door frame, and the protective door is locked, which can quickly and reliably lock the protective door, effectively improving the safety inside the tunnel;

[0024] 2. One side of the push rod is connected to the sleeve by a sliding connection through an annular plate, so the push rod is not easy to shake when moving;

[0025] 3. Turn the adjusting bolt to adjust the locking position, adjust the number of gaskets between the support seat and the box body to adjust the position of the locking bolt, which is suitable for tightening and limiting the driving racks with different exposed lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0027] Figure 2 It is a cross-sectional view along the sliding direction of the driving rack of the present application.

[0028] Figure 3 It is a schematic cross-sectional structure diagram of the limiting mechanism of the present application.

[0029] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be magnified relative to other elements to help improve understanding of the embodiments of the present invention.

[0030] Figure numerals: 1. box body; 11. mounting groove; 12. support plate; 13. support seat; 131. sleeve; 132. gasket; 2. gear; 3. driving rack; 31. connecting rod; 4. rotating member; 41. rotating shaft; 42. handwheel; 5. limiting mechanism; 51. push rod; 511. annular plate; 512. rotating hole; 513. pin shaft; 52. locking bolt; 521. adjusting screw; 6. driving member; 61. rotating shaft; 62. rotating handle; 621. through hole; 63. rotating wheel; 7. compression spring. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment discloses a tunnel protection door locking device, referring to Figure 1 , including a box body 1, which is vertically fixed on the protective door, and a driving assembly is arranged on the box body 1, and the driving assembly includes a gear 2 and a driving rack 3. A mounting groove 11 is arranged on the inner side of the box body 1, and the gear 2 is rotatably mounted on the mounting groove 11 of the box body 1, and the driving rack 3 is slidably mounted on the mounting groove 11 of the box body 1, and the two ends of the driving rack 3 are located on the outer side of the box body 1.

[0033] Reference Figure 1 and Figure 2 A rotating member 4 is provided on the box body 1, and the rotating member 4 includes a rotating shaft 41 and a hand wheel 42. The rotating shaft 41 is rotatably installed on the box body 1 and the rotating shaft 41 and the protective door are perpendicular to each other. One end of the rotating shaft 41 passes through the box body 1 through the mounting groove 11 of the box body 1 and is located outside the box body 1. The gear 2 is connected to the rotating shaft 41, and the gear 2 is coaxially arranged with the rotating shaft 41. The hand wheel 42 is arranged at one end of the rotating shaft 41 and is located outside the box body 1. Turning the hand wheel 42 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the gear 2 to rotate.

[0034] Reference Figure 1 and Figure 2 The driving racks 3 are located at opposite sides of the gear 2 and are arranged opposite to each other. The driving racks 3 on both sides are respectively meshed with the gear 2 at opposite sides. When the gear 2 rotates, the driving racks 3 on both sides move in opposite directions. A connecting rod 31 is arranged on the driving rack 3. The connecting rods 31 on both sides are respectively located at the upper and lower sides of the box body 1. A latch is arranged at one end of the connecting rod 31. When the gear 2 rotates, the driving rack 3 moves to drive the latches at both ends of the connecting rod 31 to be inserted into the door frame, and the protective door is locked.

[0035] Reference Figure 1 and Figure 2 A support plate 12 is provided on one side of the box body 1 facing upwards, a support seat 13 is provided on the support plate 12 and on one side of the box body 1, a limiting mechanism 5 is provided on the support seat 13, and the limiting mechanism 5 includes a push rod 51 and a lock bolt 52. The push rod 51 is slidably installed on the support seat 13, the push rod 51 and the driving rack 3 are perpendicular to each other, and the lock bolt 52 is provided at one end of the push rod 51. When the push rod 51 slides to the driving rack 3, one side of the lock bolt 52 is pressed against one end of the driving rack 3, and a driving member 6 and an elastic member are provided on the support seat 13. The driving member 6 drives the push rod 51 to slide, and the lock bolt 52 at one end of the push rod 51 is pressed against one end of the driving rack 3, and the elastic member pushes the push rod 51 to press against it. At this time, the position of the driving rack 3 is fixed, and the latches at both ends are fixed to the door frame, and the protective door is locked, and the protective door is locked quickly and reliably, effectively improving the safety inside the tunnel.

[0036] Reference Figure 2 and Figure 3 The driving member 6 includes a rotating shaft 61 and a rotating handle 62. The rotating shaft 61 is rotatably mounted on the support seat 13. A rotating wheel 63 is provided at one end of the rotating shaft 61. The rotating handle 62 is provided on the rotating shaft 61. The rotating handle 62 and the rotating shaft 61 are fixedly connected by bolts. A through hole 621 is provided on the rotating handle 62. A rotating hole 512 is provided on the side of the push rod 51 away from the lock bolt 52. A pin 513 is provided at the rotating hole 512 of the push rod 51. One end of the rotating handle 62 is located at the rotating hole 512. The pin 513 passes through the through hole 621 of the rotating handle 62. The rotating wheel 63 drives the rotating shaft 61 to rotate, the rotating shaft 61 drives the rotating handle 62 to rotate, the rotating handle 62 drives the pin 513 and then drives the push rod 51 to move, the pin 513 moves at the through hole 621 of the rotating handle 62, the push rod 51 drives the lock bolt 52 to move, and the driving rack 3 is tightened and separated, and the control effect is good.

[0037] Reference Figure 2 and Figure 3 A sleeve 131 is horizontally arranged on the support seat 13, and the push rod 51 is slidably installed at the sleeve 131. Both ends of the push rod 51 pass through the sleeve 131 and are located outside the sleeve 131. The elastic member includes a compression spring 7, which is arranged on the inner side of the sleeve 131. An annular plate 511 is arranged on the push rod 51, and the annular plate 511 is slidably installed in the sleeve 131. One end of the compression spring 7 is connected to one side of the annular plate 511, and one end of the compression spring 7 away from the annular plate 511 is connected to the sleeve 131. When it is necessary to open the protective door, the turning handle 62 is rotated to drive the push rod 51 to move, and the annular plate 511 pushes the compression spring 7 to compress, and the locking bolt 52 at one end of the push rod 51 is separated from the driving rack 3. At this time, the gear 2 rotates and drives the driving rack 3 to slide, and the protective door is opened. When locking, the compression spring 7 pushes the push rod 51 to the locking bolt 52 at one end of the push rod 51 to press the driving rack 3 tightly, which can achieve rapid and automatic locking.

[0038] Reference Figure 2 and Figure 3 An adjusting screw 521 is installed on the vertical thread of the lock bolt 52, and the downward end of the adjusting screw 521 is in contact with one end of the driving rack 3. The adjusting bolt is rotated to adjust the tightening position of the lock bolt 52, which is suitable for tightening and limiting the shorter exposed driving rack 3.

[0039] Reference Figure 2 and Figure 3 The support seat 13 is connected to the box body 1 by bolts, and a gasket 132 is arranged between the support seat 13 and the box body 1. The number of gaskets 132 between the support seat 13 and the box body 1 is adjusted to adjust the position of the lock bolt 52, which is suitable for exposing a longer driving rack 3 for limiting.

[0040] The implementation principle of a locking device for a tunnel protective door in an embodiment of the present application is as follows: when the protective door is locked, the hand wheel 42 is rotated to drive the rotating shaft 61 and then drive the gear 2 to rotate, and the gear 2 drives the driving racks 3 on both sides to slide, and the latches at both ends are inserted in the door frame. At this time, the compression spring 7 pushes the lock bolt 52 at one end of the push rod 51 to press against one end of the driving rack 3, and the position of the driving rack 3 is fixed. At this time, the protective door is locked. When the protective door needs to be opened, the handle 62 is rotated to drive the push rod 51 to slide, and the lock bolt 52 is separated from one end of the driving rack 3. At this time, the hand wheel 42 is rotated to drive the gear 2 to rotate and drive the latches on both sides to disengage from the door frame, and the protective door opens.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A locking device for a tunnel protective door, comprising a housing (1), wherein the housing (1) is fixedly mounted on the protective door, a driving assembly is arranged on the housing (1), the driving assembly comprises a gear (2) and a driving rack (3), the gear (2) is rotatably mounted on the housing (1), a rotating member (4) for driving the gear (2) to rotate is arranged on the housing (1), the driving rack (3) is slidably mounted on the housing (1) and is located at opposite sides of the gear (2), the driving rack (3) is meshed with the gear (2), connecting rods (31) are arranged on the driving racks (3) on both sides, the connecting rods (31) are respectively located at both sides of the housing (1), and a latch is arranged at one end of the connecting rod (31), characterized in that: The box body (1) is provided with a support seat (13), and a limiting mechanism (5) is provided on the support seat (13). The limiting mechanism (5) comprises a push rod (51) and a locking bolt (52). The push rod (51) is slidably mounted on the support seat (13), and the locking bolt (52) is arranged at one end of the push rod (51). One side of the locking bolt (52) is tightly abutted against one end of the driving rack (3). A driving member (6) for driving the push rod (51) to slide is provided on the support seat (13), and an elastic member for pushing the push rod (51) to press tightly is provided on the support seat (13).

2. A tunnel protection door locking device according to claim 1, characterized in that: The driving member (6) comprises a rotating shaft (61) and a rotating handle (62), wherein the rotating shaft (61) is rotatably mounted on the support seat (13), and the rotating handle (62) is arranged on the rotating shaft (61), and one end of the rotating handle (62) is rotatably connected to the push rod (51).

3. A tunnel protection door locking device according to claim 2, characterized in that: The rotating handle (62) is provided with a through hole (621), the push rod (51) is provided with a rotation hole (512), the push rod (51) is provided with a pin shaft (513) at the rotation hole (512), one end of the rotating handle (62) is located at the rotation hole (512), and the pin shaft (513) passes through the through hole (621) of the rotating handle (62).

4. A tunnel protection door locking device according to claim 1, characterized in that: The support seat (13) is provided with a sleeve (131), the push rod (51) is slidably mounted on the sleeve (131), and the elastic member comprises a compression spring (7), the compression spring (7) is arranged in the sleeve (131), and one end of the compression spring (7) is connected to the push rod (51).

5. A locking device for a tunnel protective door according to claim 4, characterized in that: An annular plate (511) is provided on the push rod (51), and the annular plate (511) is slidably mounted in the sleeve (131), and one end of the compression spring (7) is connected to one side of the annular plate (511).

6. A tunnel protection door locking device according to claim 1, characterized in that: The lock bolt (52) is provided with an adjusting screw (521), and one end of the adjusting screw (521) is in contact with one end of the driving rack (3).

7. A tunnel protection door locking device according to claim 1, characterized in that: The support seat (13) and the box body (1) are connected via bolts, and a gasket (132) is provided between the support seat (13) and the box body (1).

8. A tunnel protection door locking device according to claim 1, characterized in that: The rotating member (4) comprises a rotating shaft (41) and a hand wheel (42); the rotating shaft (41) is rotatably mounted on the housing (1); the gear (2) is connected to the rotating shaft (41); the gear (2) and the rotating shaft (41) are coaxially arranged; and the hand wheel (42) is arranged at one end of the rotating shaft (41).

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