Civil air defense door supporting structure

Abstract

The utility model relates to the technical field of civil air defense door equipment, in particular to a civil air defense door supporting structure which comprises a supporting pad, a rack, a gear, a connecting shaft, a worm gear and a worm. The supporting pad is arranged at the door bottom of the civil defense door; the rack is fixedly connected to the supporting pad; the middle part of the gear is coaxially connected with a worm wheel through a connecting shaft; the worm is in transmission connection with the periphery of the worm gear; the worm is rotated to drive the worm gear to rotate, so that the connecting shaft rotates to drive the gear to rotate, and the rack drives the supporting pad to move up and down. The civil air defense door supporting piece can solve the problems that an existing supporting piece cannot be correspondingly adjusted according to the size of a civil air defense door, and a supporting pad is inconvenient and prone to being lost.

Description

TECHNICAL FIELD

[0001] The utility model relates to people's air defense door equipment technical field, concretely relates to a people's air defense door support structure. BACKGROUND

[0002] People's air defense engineering is the building engineering of necessary accessory engineering, and the people's air defense door is the door of the entrance of people's air defense engineering, and is also one of people's air defense engineering, and one side of the people's air defense door is provided with a hinge, and the people's air defense door is rotatably connected to the door frame through the hinge.Due to the particularity of the application environment of the people's air defense door, the people's air defense door is usually made of thick steel plate, so that the weight of the people's air defense door is heavy.When the people's air defense door is opened, the hinge is the main force component, and the hinge is prone to damage with the passage of time, so a support is usually arranged below the people's air defense door to support the people's air defense door when the people's air defense door is opened, so as to reduce the damage of the hinge.

[0003] The existing people's air defense door support has inclined wood and brick, and the support is laid under the bottom of the people's air defense door when the people's air defense door is opened, so that the people's air defense door can be supported, but the shape of the inclined wood and the brick is fixed, and the size of the people's air defense door cannot be adjusted correspondingly, so the application range is small, and the inclined wood and the brick are arranged separately from the people's air defense door when not in use, so that the support is inconvenient, and the support is prone to loss. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims at providing a people's air defense door support structure to solve the problems that the existing support cannot be adjusted correspondingly according to the size of the people's air defense door, the support is inconvenient, and the support is prone to loss.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A people's air defense door support structure, which comprises a support pad, a rack, a gear, a connecting shaft, a worm wheel and a worm, the support pad is arranged at the bottom of the people's air defense door, the rack is fixedly connected to the support pad, the gear is peripherally connected to the rack in transmission, the middle part of the gear is coaxially connected to the worm wheel through the connecting shaft, the worm is peripherally connected to the worm wheel in transmission, and the connecting shaft is rotated to drive the gear to rotate through rotating the worm to drive the support pad to move up and down through the rack.

[0007] As a further scheme of the utility model, the support pad is horizontally arranged, and the rack is vertically arranged on the support pad.

[0008] As a further scheme of the utility model, the rack, the gear, the connecting shaft and the worm wheel are arranged in multiple groups and symmetrically distributed left and right.

[0009] As a further scheme of the utility model: wherein, still include drive motor, the output shaft of drive motor is coaxial connection the worm.

[0010] As a further scheme of the utility model: wherein, the drive motor is double-shaft drive motor, the worm is equipped with two, the drive motor sets up above the middle part of the support pad, two output shafts of drive motor are coaxial connection two worm respectively.

[0011] As a further scheme of the utility model: wherein, the diameter of worm wheel is greater than the diameter of gear.

[0012] Due to the adoption of the above technical scheme, the utility model will have the following beneficial effects:

[0013] The support structure of civil air defense door provided by the utility model drives worm wheel to rotate through rotating worm, makes connecting shaft rotate and drive gear to rotate, thereby drives the support pad to move up and down through rack, so that even if the height of the lower surface of different civil air defense doors from the ground is different, the support pad can be adjusted through up and down movement and the self-locking of worm wheel is used to support the civil air defense door, so that compared with the prior art, the utility model has wider application range, and the utility model is directly integrated on the civil air defense door, so that the support pad is more convenient and less likely to be lost. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0015] Figure 1 It is the perspective view of the support structure of civil air defense door of the embodiment of the utility model;

[0016] Figure 2 It is Figure 1 It is the perspective view of the support structure of civil air defense door of the embodiment of the utility model from another angle;

[0017] Figure 3 It is Figure 1 It is the perspective view of the support structure of civil air defense door of the embodiment of the utility model in the installation state;

[0018] Figure 4 It is Figure 3 The sectional view.

[0019] The corresponding relationship between the annotations of various drawings in the figure and the component names is as follows:

[0020] 1, support pad; 2, rack; 3, gear; 4, connecting shaft; 5, worm wheel; 6, worm; 7, drive motor; 8, civil air defense door; 81, mounting groove. DETAILED DESCRIPTION

[0021] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the following description is considered to be essentially exemplary rather than limiting.

[0022] Please refer to Figures 1-4 In an embodiment of the civil air defense door support structure of the present application, the civil air defense door support structure comprises a support pad 1, a rack 2, a gear 3, a connecting shaft 4, a worm wheel 5 and a worm 6; wherein the support pad 1 is used to be arranged at the bottom of the civil air defense door 8 to support the civil air defense door 8; one end of the rack 2 is fixedly connected to the support pad 1; the outer periphery of the gear 3 is in transmission connection with the rack 2, the middle part of the gear 3 is coaxially connected to the worm wheel 5 through the connecting shaft 4, and the worm 6 is in transmission connection with the outer periphery of the worm wheel 5; when mounting, the mounting groove 81 is formed at the bottom of the civil air defense door 8, the rack 2 and the gear 3 are placed in the mounting groove 81, the connecting shaft 4 penetrates through the side wall of the mounting groove 81, and the connecting shaft 4 is rotatably connected to the civil air defense door 8 through the bearing with seat; when the worm 6 is rotated to drive the worm wheel 5 to rotate, the gear 3 can be rotated through the rotation of the connecting shaft 4, so that the rack 2 drives the support pad 1 to move up and down, so that even if the height of the lower surface of the civil air defense door 8 from the ground is different, the support pad 1 can be adjusted by moving up and down to adapt to the different civil air defense doors 8.

[0023] Specifically, the support pad 1 can be horizontally arranged, a rubber pad can be fixedly attached to the bottom of the support pad 1, or the entire support pad 1 can be made of rubber material, so that the support pad 1 is more in line with the ground when supporting, thereby being more stable; the rack 2 is vertically arranged on the support pad 1 to prevent the support pad 1 from being deviated due to the horizontal component force of the rack 2.

[0024] Specifically, the number of the rack 2, the gear 3, the connecting shaft 4 and the worm wheel 5 can be set to four groups to improve the support force of the civil air defense door 8, and the four groups of the rack 2, the gear 3, the connecting shaft 4 and the worm wheel 5 are symmetrically distributed about the center line of the support pad 1 as the axis of symmetry, so that the support pad 1 is more evenly stressed, thereby improving the stability of the support pad 1.

[0025] On this basis, the civil air defense door support structure further comprises a driving motor 7, the output shaft of the driving motor 7 is coaxially connected with the worm 6, the worm 6 is driven to rotate by the driving motor 7, and the driving motor 7 can be a stepping motor, the stepping motor has the characteristics of precise angle control through pulse signals, fixed angular displacement is achieved at each step, the high precision of the stepping motor can be converted into the high precision positioning of the output shaft in combination with the large reduction ratio of the worm 6 transmission, and the precision of the up-down movement adjustment support pad 1 is improved; in addition, the stepping motor has strong torque output capacity at low speed, especially when starting and stopping, the high torque of the stepping motor can be further amplified through the high reduction ratio of the worm 6 transmission, and the output shaft can provide greater driving force, which is suitable for the high load condition of the civil air defense door 8.

[0026] Further, the driving motor 7 can be a double-shaft driving motor 7, and correspondingly, the number of the worms 6 is two, so that the driving motor 7 can be arranged above the middle part of the support pad 1, the two output shafts of the driving motor 7 are coaxially connected with the two worms 6 respectively, compared with being arranged on one side of the support pad 1, the space utilization of the civil air defense door 8 can be improved by utilizing the structural characteristics of high door leaf height and narrow width.

[0027] Specifically, the diameter of the worm gear 5 can be greater than the diameter of the gear 3, so that the moving speed of the rack 2 can be reduced, and the precision of the up-down movement adjustment support pad 1 is further improved.

[0028] The use method or working principle of the utility model is as follows:

[0029] When the civil air defense door 8 is opened, the worm 6 is driven to rotate by the driving motor 7, the worm 6 drives the worm gear 5 to rotate, the worm gear 5 drives the gear 3 to rotate through the connecting shaft 4, and the gear 3 drives the rack 2 to ascend and descend, so that the support pad 1 can be moved up and down according to the distance from the lower surface of the civil air defense door 8 to the ground, until the support pad 1 is supported on the ground; after adjustment, the driving motor 7 is stopped, and the support pad 1 is supported on the civil air defense door 8 under the self-locking action of the worm gear 5, so that the damage of the hinge of the civil air defense door is prevented due to excessive force.

[0030] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A support structure for a civil defense door, characterized in that, The utility model provides a support pad (1), rack (2), gear (3), connecting shaft (4), worm wheel (5) and worm (6) including, the support pad (1) is used to set up in the door bottom of people's air defense door (8), the rack (2) is fixedly connected on the support pad (1), the gear (3) outer periphery is transmission connection with the rack (2), the gear (3) middle part is coaxial connection worm wheel (5) through connecting shaft (4), worm (6) is transmission connection with the outer periphery of worm wheel (5), through rotating worm (6) drive worm wheel (5) rotation, make the connecting shaft (4) rotation drive gear (3) rotation, thereby through the rack (2) drive support pad (1) up and down movement.

2. The blast door support structure of claim 1, wherein, The support pad (1) is horizontally arranged, and the rack (2) is vertically arranged on the support pad (1).

3. The blast door support structure of claim 1, wherein, The rack (2), the gear (3), the connecting shaft (4) and the worm wheel (5) are provided with multiple groups and are symmetrically distributed left and right.

4. The blast door support structure of claim 1, wherein, The utility model further includes a driving motor (7), and the output shaft of the driving motor (7) is coaxially connected with the worm (6).

5. The blast door support structure of claim 4, wherein, The driving motor (7) is a double-shaft driving motor (7), the worm (6) is provided with two, the driving motor (7) is arranged above the middle part of the support pad (1), and the two output shafts of the driving motor (7) are coaxially connected with the two worms (6) respectively.

6. The blast door support structure of claim 1, wherein, The diameter of the worm wheel (5) is greater than the diameter of the gear (3).

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