Door lock detection indicating device for rail transit and emergency evacuation door

Abstract

The utility model discloses a door lock detecting and indicating device for rail transit and an emergency evacuation door, the door lock detecting and indicating device for rail transit comprises a mounting seat and a sliding rod connected with a support in a sliding manner, and the sliding rod is provided with a first indicating mark; the support is provided with a second indication mark and a third indication mark which are used for displaying that the door leaf is just closed or excessively tightened. In the process of withdrawing the front door, the front door withdrawing device is used for identifying the position from the spring bolt to the gear locking position, so that the locking failure caused by manual operation of the front door lock when the door is excessively closed or the door is not closed in place is avoided.

Description

Technical Field

[0001] The utility model relates to a door lock detection indicating device for rail transportation and also relates to an emergency evacuation door. Background Art

[0002] When the rail transit train door system is in the retracted state, the front door (door leaf) is located on the outside and the ladder is located on the front inside. After retraction, the front door on the outside needs to be locked, and an indicator device is required to drive the door lock to lock the door leaf.

[0003] Publication No. CN116950526A discloses an automated fully-opening emergency evacuation flip-up door for subway vehicles. This system employs a locking tongue at the bottom of the door leaf and a corresponding lock catch at the door frame. When the door leaf is closed, a fully closed switch on the door leaf indirectly indicates the door leaf position, which then drives the locking tongue into the lock catch. This indicator method cannot accurately indicate whether the front door is over-tightened if it closes too quickly. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a door lock detection and indicating device for rail transit that accurately indicates the closing status of a door leaf.

[0005] Technical solution: The utility model describes a door lock detection and indicating device for rail transit, comprising a mounting base, a sliding rod slidably connected to the support, the sliding rod being provided with a first indicator mark, and the support being provided with a second indicator mark and a third indicator mark for indicating whether the door leaf is just closed or over-tightened.

[0006] Preferably, in order to realize the automatic reset function of the sliding rod, the support and the sliding rod located in the support are provided with a bushing and a compression spring.

[0007] Preferably, in order to prevent the sliding rod from slipping, a stop washer is provided at the rear end of the sliding rod.

[0008] Preferably, in order to reduce the impact of the door leaf on the sliding rod, a buffer head is provided at the front end of the sliding rod.

[0009] Preferably, in order to make the indicator mark eye-catching, the first indicator mark is provided on the bushing.

[0010] Preferably, in order to facilitate the adjustment of the position of the first indicator mark, the top of the support is open, and detachably connected indicator base plates are provided at both ends of the support, and the second indicator mark and the third indicator mark are located on the indicator base plates.

[0011] Preferably, in order to facilitate alignment of the first indicator mark with the second indicator mark and the third indicator mark on the support, the second indicator mark and the third indicator mark are respectively located on both sides of the sliding rod.

[0012] A rail transit door comprises the aforementioned door lock detection indicating device for rail transit, a door leaf and a door frame, wherein the support is connected to the door frame and the sliding rod is perpendicular to the door leaf.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following advantages: 1. Accurate indication of the door leaf closing status: the door lock detection indicator device has three indication states, which can determine the door lock operation timing when it is inconvenient to observe; 2. After the door leaf and the ramp are released, the door lock detection indicator device automatically resets; 3. The device occupies a small space, triggers movement after contact, and indicates the door leaf status and the feasibility of door lock operation; 4. It is easy to install, debug and operate; 5. It is suitable for rail emergency evacuation ramps, has little impact on the size of the existing door system, and can be used in working conditions where space is small and identification is difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A compressed state diagram of the door lock detection indicator device;

[0015] Figure 2 Expand the state diagram for the door lock detection indicator device;

[0016] Figure 3 This is a structural diagram of the door lock detection indicator device and the rail transit door assembly status. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0018] Example 1: Figure 1 and Figure 2 The door lock detection indicating device includes a buffer head 1, a locking nut 2, an indicating base plate 3, an indicating mark 4, a bushing 5, a sliding rod 6, a stop washer 7, a support 8, a compression spring 9, a nut 10, etc.

[0019] The support 8 is hollow, and the sliding rod 6 is passed through the support 8 and can slide along the support 8. A bushing 5 is installed on the sliding rod 6 located in the support 8. The length of the bushing 5 is smaller than the width of the support 8. A compression spring 9 is provided on the sliding rod 6 between the bushing 5 and the support 8. The compression spring 9 is used to reset the sliding rod 6.

[0020] An indicator mark is provided on the bushing 5 and / or the sliding rod 6 located in the support 8, and an indicator mark 4 is also provided on the top of the support 8. The indicator marks 4 include at least two, and the two indicator marks 4 are arranged in front and behind on the support 8, respectively used to indicate that the front door is locked in place and the door leaf is over-tightened.

[0021] The first indicator mark is on the bushing 5 and / or the sliding rod 6, and the second and third indicator marks are on the top of the support 8. When in use, the door leaf pushes the sliding rod 6 to slide along the support 8, and the first indicator mark is aligned with the second indicator mark, which means that the door leaf is just closed in place and the locking mechanism can be driven to lock the door leaf; when the first indicator mark is aligned with the third indicator mark, the first indicator mark is between the second indicator mark and the third indicator mark, or the first indicator mark exceeds the third indicator mark, it means that the door leaf is over-tightened and the locking mechanism cannot be driven to lock the door leaf.

[0022] A buffer head 1 is provided at the front end of the sliding rod 6, and the buffer head 1 is fixed to the sliding rod 6 through a locking nut 2. A stop washer 7 is provided at the rear end of the sliding rod 6, and the stop washer 7 is fixed to the sliding rod 6 through a nut 10. The stop washer 7 prevents the sliding rod 6 from slipping off the support 8.

[0023] The main body of support 8 is a U-shaped plate-type mounting base or a mounting base with an open top. Indicator base plates 3 are symmetrically positioned at both ends of the opening of support 8. The sliding rod 6 and the first indicator mark are located between the two indicator base plates 3. The indicator mark 4 is located on the indicator base plates 3. It is best to have two indicator marks 4 located on each indicator base plate 3 to facilitate identification and improve indication accuracy. During assembly, first secure support 8, then install the sliding rod 6, buffer head 1, lock nut 2, bushing 5, compression spring 9, stop washer 7, support 8, and nut 10 on support 8. Adjust bushing 5 to the appropriate position, and finally secure the indicator base plates 3 at both ends of support 8 to complete assembly.

[0024] Example 2: Figure 3 As shown, it is an emergency evacuation door equipped with a door lock detection indicator device. The door lock detection indicator device B is fixed to the bottom plate of the door frame F, the support 8 is connected to the bottom plate of the door frame F, and the sliding rod 6 is perpendicular to the front door D.

[0025] During use, ramp C is retracted and folded inside door frame F. Next, front door retraction device A is operated to retract front door D. After front door D pivots and contacts buffer head 1 of door lock detection indicator device B, it pushes sliding rod 6 and drives bushing 5 to compress compression spring 9. When the first indicator mark on bushing 5 aligns with the second indicator mark on support 8, it indicates that the door lock handle on front door D can be operated to lock the front door. At this time, the position of lock tongue E on front door D is not visible. If front door D is retracted too quickly, bushing 5 moves beyond the second indicator mark on support 8 and aligns with the third indicator mark, or is between the second and third indicator marks, or exceeds the third indicator mark, it indicates that front door D is retracted too tightly and the door lock handle on front door D can no longer be operated.

[0026] After releasing the front door and the ramp, the compression spring 9 in the door lock detection indicator B automatically releases its elastic force, pushing the bushing 5 and sliding rod 6 out of the restraining slot of the support 8, pushing the buffer head 1 of the door lock detection indicator B to the reset position. During the process of retracting the front door, the front door retraction device recognizes the lock tongue in the locked position, preventing manual operation of the front door lock when the door is closed too far or not fully, which may cause the lock to fail.

Claims

1. A door lock detection and indication device for rail transit, characterized in that: The invention comprises a support (8), a sliding rod (6) slidably connected to the support (8), a first indicator mark being provided on the sliding rod (6), and a second indicator mark and a third indicator mark being provided on the support (8) for indicating whether the door leaf is just closed or overtightened.

2. The door lock detection and indicating device for rail transit according to claim 1, characterized in that: A bushing (5) and a compression spring (9) are provided on the sliding rod (6) located in the support (8).

3. The door lock detection and indicating device for rail transit according to claim 2, characterized in that: A stop washer (7) is provided at the rear end of the sliding rod (6).

4. The door lock detection and indicating device for rail transit according to claim 2, characterized in that: The first indicator mark is provided on the bushing (5).

5. The door lock detection and indicating device for rail transit according to any one of claims 1 to 4, characterized in that: The top of the support (8) is open, and detachably connected indicating base plates (3) are provided at both ends of the top of the support (8), and the second indicating mark and the third indicating mark are located on the indicating base plates (3).

6. The door lock detection and indicating device for rail transit according to claim 1, characterized in that: A buffer head (1) is provided at the front end of the sliding rod (6).

7. An emergency evacuation door, comprising the door lock detection indicator device for rail transit according to claim 1, a door leaf, and a door frame, wherein the support (8) is connected to the door frame, and the sliding rod (6) is perpendicular to the door leaf.

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