EDITORIAL NOTE 2015101238 There are three pages of description only.
An intelligent building entrance guard locking device Technical field This utility model involves a building security facility, specifically an intelligent building entrance guard locking device. Background technology With the development of modernization, theft often occurs in some high buildings and large mansions including office buildings and residential buildings. Considering security factor, the installation of entrance guard device is required so as to guard against theft. However, previous entrance guard devices have a complicated structure and high installation cost. Contents of utility model The technical problem to be solved by this utility model is to provide an intelligent building entrance guard locking device with simple structure and stable operation. This utility model is realized through the following technical proposal: an intelligent building entrance guard locking device includes locking mechanism installed in the wall and security door installed below the wall. The locking mechanism mentioned includes horizontal chute installed in the wall and drive motor installed in the wall on the left end of horizontal chute. Drive screw is installed fixedly on the output shaft of drive motor. The right end of drive screw is installed on the right end of the wall via bearing. Sliding sleeve is installed on the drive screw. Front and back chutes are set up in the sliding sleeve. Front and back clamping blocks which can slide upwards and downwards are installed respectively in front and back chutes. Limit projecture used for limit of sliding block is set up at the bottom of front and back chutes of sliding sleeve. Return spring is installed respectively between the limit projecture and front and back clamping blocks. Front and back idler wheels are installed respectively on the upper end of front and back clamping blocks. Sliding rail is set up in the wall on the upper end of horizontal chute. The sliding rail has press-in plane portion, transition plane portion and extension plane portion successively from left to right. Contact sensor is installed in the wall on the left end of horizontal chute. Contact lever for cooperation with contact sensor is installed on the left end of sliding sleeve. Further, the upper end of both front and back clamping blocks has broad side used for cooperation with front and back chutes of sliding sleeve. The lower end has narrow side used for holding the stretch of return spring. Beneficial effect of this utility model is shown as below: the rotation of drive motor makes sliding sleeve move towards the left and right on drive screw. Sliding block can stretch in the movement process of sliding sleeve. When it extends, security door will be locked; when it withdraws, the locking of security door is removed. This utility model has a simple structure and is easy to install. The installation cost decreases greatly. This utility model has stable operation.
Descriptions of the attached figure For the convenience of description, this utility model is described in detail with the following specific implementation example and attached figure. Fig.1 is structural diagram of an intelligent building entrance guard locking device of this utility model; Fig.2 is structural diagram of an intelligent building entrance guard locking device of this utility model when it is locked; Fig.3 is side view of sliding sleeve in an intelligent building entrance guard locking device. Detailed implementation way This invention is described in detail with figures 1-3. An intelligent building entrance guard locking device of this utility model includes locking mechanism installed in the wall 3 and security door 1 installed below the wall 3. The locking mechanism mentioned includes horizontal chute 14 installed in the wall 3 and drive motor 2 installed in the wall 3 on the left end of horizontal chute 14. Drive screw 15 is installed fixedly on the output shaft of drive motor 2. The right end of drive screw 15 is installed on the right end of the wall 3 via bearing. Sliding sleeve 9 is installed on the drive screw 15. Front and back chutes are set up in the sliding sleeve 9. Front 8 and back clamping blocks 81 which can slide upwards and downwards are installed respectively in front and back chutes. Limit projecture 12 used for limit of sliding block 8 is set up at the bottom of front and back chutes of sliding sleeve 9. Return spring 11 is installed respectively between the limit projecture 12 and front 8 and back clamping blocks 81. Front 7 and back idler wheels 71 are installed respectively on the upper end of front 8 and back clamping blocks 81. Sliding rail is set up in the wall 3 on the upper end of horizontal chute 14. The sliding rail has press-in plane portion 4, transition plane portion 5 and extension plane portion 6 successively from left to right. The upper end of both front 8 and back clamping blocks 81 has broad side used for cooperation with front and back chutes of sliding sleeve 9. The lower end has narrow side used for holding the stretch of return spring 11. Contact sensor 16 is installed in the wall 3 on the left end of horizontal chute 14. Contact lever 161 for cooperation with contact sensor 13 is installed on the left end of sliding sleeve 9. After contact lever 161 and contact sensor 16 contact, drive motor 2 stops operation. At this time, security door 1 is locked. During the use, the rotation of drive motor makes sliding sleeve move towards the left. In the process of its movement towards the left, front and back clamping blocks are pressed down slowly. Finally, their upper ends are respectively in front and back positions of security door. Therefore, the security door cannot move forward and backward. After drive motor stops operation, the security door is self-locking with the cooperation of drive screw and thread in sliding sleeve. The reversed rotation of drive motor makes sliding sleeve move towards the right. In the process of its movement towards the right, front and back clamping blocks withdraw slowly under the action of return spring. Finally, sliding block Beneficial effect of this utility model is shown as below: the rotation of drive motor makes sliding sleeve move towards the left and right on drive screw. Sliding block can stretch in the movement process of sliding sleeve. When it extends, security door will be locked; when it withdraws, the locking of security door is removed. This utility model has a simple structure and is easy to install. The installation cost decreases greatly. This utility model has stable operation. The above is a specific implementation way of this utility model. However, the scope of protection of this utility model is not limited to this. Any change or replacement without creative work shall be covered in the scope of protection of this utility model. Therefore, the scope of protection of this utility model shall be subject to that defined in the claim.