Platform door locking device

Abstract

A platform door lock device comprises a front bracket and a rear bracket connected to each other, an electromagnetic assembly with a core shaft is installed on the front bracket, and a travel switch is respectively provided at the upper and lower parts of the rear bracket, a switch trigger bracket is installed on the electromagnetic assembly, and the switch trigger bracket is located below the travel switch at the upper part of the rear bracket, a pull rod is installed at the lower end of the core shaft of the electromagnetic assembly, a lock arm is rotatably installed at the lower part of the front bracket, the pull rod is rotatably connected to the lock arm, a rotating arm is rotatably installed at the lower part of the front bracket, and the rotating arm is installed and connected to the lock arm. The present invention utilizes the travel switch for precise control to improve the unlocking and locking accuracy.

Description

Technical Field

[0001] The invention relates to a door lock device, in particular to a door lock device mainly used for rail transit platform doors. Background Art

[0002] Subway platform doors are a high-tech product that integrates architecture, machinery, materials, electronics and information, and is used in subway platforms. The platform doors separate the platform from the train running area and are automatically opened by the control system. Subway platform doors ensure the safety of trains and passengers when entering and leaving the station.

[0003] Subway platform doors are divided into closed, open and semi-high types. The closed type is usually called "shield door"; the open and semi-high types are usually called "safety door". Shield doors are generally used in underground platforms, while safety doors are mostly used in ground platforms or elevated platforms.

[0004] In the design of subway platform doors, corresponding door lock devices are required to ensure that they can be locked and unlocked to ensure normal safe use.

[0005] Currently, the manual unlocking device of the safety door has a complex structure and the overall assembly is also relatively complicated. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a platform door locking device.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A platform door lock device comprises a front bracket and a rear bracket connected to each other, wherein an electromagnetic assembly having a core shaft is installed on the front bracket, and travel switches are respectively provided at the upper and lower parts of the rear bracket, and a switch trigger bracket is installed on the electromagnetic assembly, and the switch trigger bracket is located below the travel switch at the upper part of the rear bracket, a pull rod is installed at the lower end of the core shaft of the electromagnetic assembly, a lock arm is rotatably installed at the lower part of the front bracket, the pull rod is rotatably connected to the lock arm, a rotating arm is rotatably installed at the lower part of the front bracket, and the rotating arm is installed and connected to the lock arm.

[0009] A manual unlocking bracket is rotatably mounted at the lower part of the front bracket, a manual rotating rod is inserted in the manual unlocking bracket, a torsion spring is sleeved on the manual rotating rod, and a manual travel switch matching the manual unlocking bracket is disposed at the lower part of the rear bracket.

[0010] The rotating arm comprises a left rotating arm and a right rotating arm. The left rotating arm and the right rotating arm are respectively rotatably mounted on the lower part of the front bracket and are connected to the locking arm. The left rotating arm is connected to the right rotating arm through a tension spring.

[0011] The center position of the locking arm is rotatably mounted with the front bracket through a center locking rod, and a left rotating arm and a right rotating arm are respectively arranged on both sides of the center of the locking arm.

[0012] A buffer sleeve and a cotter pin are installed on the locking arm, and the upper parts of the left rotating arm and the right rotating arm are locked and pressed against the buffer sleeve by the cotter pin.

[0013] A bearing is installed on the front bracket, and a central locking rod is inserted into the bearing.

[0014] A travel switch is respectively arranged on both sides of the upper part of the rear bracket, and a travel switch is respectively arranged on both sides of the lower part of the rear bracket.

[0015] The electromagnetic assembly is locked on the front bracket by bolts, and the front bracket is locked and connected with the rear bracket by bolts.

[0016] The present invention can be automatically and manually unlocked and locked, is easy to operate, and realizes more precise control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Attached Figure 2 It is a schematic diagram of the main structure of the present invention;

[0019] Attached Figure 3 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0020] Attached Figure 4 It is a schematic diagram of the decomposition structure of the present invention. DETAILED DESCRIPTION

[0021] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] As attached Figure 1-4 As shown, the present invention discloses a platform door lock device, including a front bracket 1 and a rear bracket 2 connected to each other, an electromagnetic assembly 3 with a core shaft 4 is installed on the front bracket 1, and a travel switch 5 is respectively provided at the upper and lower parts of the rear bracket 2, and a switch trigger bracket 6 is installed on the electromagnetic assembly 3, and the switch trigger bracket 6 is located below the travel switch 5 at the upper part of the rear bracket 2, and a pull rod 7 is installed at the lower end of the core shaft 4 of the electromagnetic assembly 3, and a lock arm 8 is rotatably installed at the lower part of the front bracket 1, and the pull rod 7 is rotatably connected to the lock arm 8, and a rotating arm is rotatably installed at the lower part of the front bracket 1, and the rotating arm is installed and connected to the lock arm. Both ends of the lock arm have lock hooks, and the lock hooks are used to form a snap-on lock.

[0023] The lower part of the front bracket 1 is rotatably provided with a manual unlocking bracket 9, a manual rotating rod 10 is inserted into the manual unlocking bracket 9, and a torsion spring 11 is sleeved on the manual rotating rod 10. The lower part of the rear bracket 2 is provided with a manual travel switch 13 matching the manual unlocking bracket 9. The manual rotating rod can be sleeved with a cover 12. By rotating the manual rotating rod, the manual unlocking bracket is driven to rotate, so that the manual unlocking bracket touches the manual travel switch to achieve control. The torsion spring plays a reset role, which improves the convenience of operation.

[0024] The rotating arm includes a left rotating arm 14 and a right rotating arm 15, which are respectively rotatably mounted on the lower part of the front bracket 1 and are connected to the locking arm 8, and the left rotating arm 14 is connected to the right rotating arm 15 via a tension spring 16. A buffer sleeve 17 and a cotter pin 18 are mounted on the locking arm 8, and the upper part of the left rotating arm and the right rotating arm are locked and pressed against the buffer sleeve by the cotter pin. The two corresponding buffer sleeves and cotter pins are blocked by the rotating arm at the buffer sleeve and the cotter pin when the locking arm rotates to a certain angle, thereby limiting the continued rotation of the locking arm.

[0025] The center position of the locking arm 8 is rotatably mounted with the front bracket 1 through a center locking rod 19, and the left rotating arm and the right rotating arm are respectively arranged on both sides of the center of the locking arm.

[0026] A bearing 20 is installed on the front bracket 1, and the central locking rod 19 is inserted in the bearing 20 so that the rotation of the locking arm is not subject to larger resistance. During assembly, a stop ring 21 and a washer 22 can also be installed on one side of the bearing for more secure installation.

[0027] A travel switch is respectively arranged on both sides of the upper part of the rear bracket, and a travel switch is respectively arranged on both sides of the lower part of the rear bracket, so that the travel sensing is more accurate.

[0028] The electromagnetic assembly is locked on the front bracket by bolts, and the front bracket is locked and connected with the rear bracket by bolts. Each travel switch is installed and connected by bolts.

[0029] In the present invention, the electromagnetic component is energized to generate magnetic force, which can make the core shaft extend and retract, drive the pull rod to move up and down, so that the locking arm rotates with the center locking rod as the fulcrum. The locking arm rotates within a certain angle range to lock the corresponding lock hole to achieve locking, and the lock wall rotates within a certain range to be blocked by the cotter pin and the rotating arm and cannot continue to rotate, thereby achieving the corresponding operation.

[0030] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A platform door lock device, comprising a front bracket and a rear bracket connected to each other, characterized in that: An electromagnetic assembly with a core shaft is installed on the front bracket, and a travel switch is respectively provided on the upper and lower parts of the rear bracket. A switch trigger bracket is installed on the electromagnetic assembly, and the switch trigger bracket is located below the travel switch on the upper part of the rear bracket. A pull rod is installed on the lower end of the core shaft of the electromagnetic assembly, and a locking arm is rotatably installed on the lower part of the front bracket. The pull rod is rotatably connected to the locking arm, and a rotating arm is rotatably installed on the lower part of the front bracket, and the rotating arm is installed and connected to the locking arm; the rotating arm includes a left rotating arm and a right rotating arm, which are rotatably installed on the lower part of the front bracket and are installed and connected to the locking arm respectively, and the left rotating arm is connected to the right rotating arm through a tension spring, and a buffer sleeve and a cotter pin are installed on the locking arm, and the upper parts of the left rotating arm and the right rotating arm are locked and pressed against the buffer sleeve by the cotter pin.

2. The platform door lock device according to claim 1, characterized in that: A manual unlocking bracket is rotatably mounted at the lower part of the front bracket, a manual rotating rod is inserted in the manual unlocking bracket, a torsion spring is sleeved on the manual rotating rod, and a manual travel switch matching the manual unlocking bracket is disposed at the lower part of the rear bracket.

3. The platform door lock device according to claim 1, characterized in that: The center position of the locking arm is rotatably mounted with the front bracket through a center locking rod, and a left rotating arm and a right rotating arm are respectively arranged on both sides of the center of the locking arm.

4. The platform door lock device according to claim 3, characterized in that: A bearing is installed on the front bracket, and a central locking rod is inserted into the bearing.

5. The platform door lock device according to claim 1, characterized in that: A travel switch is respectively arranged on both sides of the upper part of the rear bracket, and a travel switch is respectively arranged on both sides of the lower part of the rear bracket.

6. The platform door lock device according to claim 1, characterized in that: The electromagnetic assembly is locked on the front bracket by bolts, and the front bracket is locked and connected with the rear bracket by bolts.

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