An assembled arc-shaped protection structure for the opening of civil air defense engineering and its installation process

Abstract

An assembled arc-shaped protective structure for the entrance of a civil air defense project and an installation process, comprising an arc-shaped door, an arc-shaped door frame and an arc-shaped door frame wall frame; the arc-shaped door frame wall frame comprises an upper frame, a lower frame, a left frame and a right frame, the outer surfaces of the upper frame and the lower frame are provided with ear plates, the upper and lower ends of the arc-shaped door frame are provided with ear seats that match the ear plates, the arc-shaped door frame is connected with the ear plates on the arc-shaped door frame wall frame through the ear seats thereon through latches, a doorway is reserved on the arc-shaped door frame, a mother hinge is provided on one side of the outer arc doorway of the arc-shaped door frame, a sub-hinge that matches the mother hinge is provided on one side of the arc-shaped door, and the arc-shaped door is rotatably installed through the sub-hinge thereon and the mother hinge on the arc-shaped door frame through hinge pins. It is suitable for tunnel projects excavated by full-section excavation technology. Through the structural form in which the arc-shaped door is separated from the arc-shaped door frame wall frame, the arc-shaped door frame is easier to install on the tunnel wall and ensures good structural strength.

Description

Technical Field

[0001] The invention belongs to the technical field of building doors and windows, and specifically relates to an assembled arc-shaped protective structure for the opening of a civil air defense project and an installation process. Background Art

[0002] Traditionally, civil air defense projects are mostly constructed using the drilling and blasting method. The construction sections are usually rectangular, horseshoe-shaped or similar shapes. The mouth protection equipment is mostly a flat square structure. To enhance resistance, a small number of protective doors are designed with curved door leaves, while the door frames and door frame walls are designed as flat rectangular structures.

[0003] In recent years, full-section tunneling technology based on full-section hard rock tunnel boring machines has continued to develop, replacing more traditional drilling and blasting methods in the hard rock field. After adopting the full-section tunneling technology, the tunnel is formed in one go, and the cross-section is a perfect circle; due to the one-time formation of the cutter head, the process of expanding the door frame wall slot is cumbersome and costly; for tunnels constructed in the form of prefabricated pipe segments, local expansion is particularly unfeasible. Therefore, it is necessary to develop a new type of protective door structure that is suitable for the development of technology. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an assembled arc-shaped protective structure for the entrance of a civil air defense project, comprising an arc-shaped door, an arc-shaped door frame and an arc-shaped door frame wall frame; the arc-shaped door frame wall frame comprises an upper frame, a lower frame, a left frame and a right frame, the two ends of the upper frame are respectively welded to the upper flange arms of the left frame and the right frame, the lower flange arms of the left frame and the right frame are respectively welded to the two ends of the lower frame, the outer surfaces of the upper frame and the lower frame are provided with ear plates, the upper and lower ends of the arc-shaped door frame are both provided with ear seats that cooperate with the ear plates, the arc-shaped door frame is connected to the ear plates on the arc-shaped door frame wall frame through the ear seats thereon by means of pins, and then the connection between the arc-shaped door frame and the arc-shaped door frame wall frame is welded, a doorway is reserved on the arc-shaped door frame, a mother hinge is provided on one side of the outer arc doorway of the arc-shaped door frame, a sub-hinge that cooperates with the mother hinge is provided on one side of the arc-shaped door, and the arc-shaped door is rotatably installed through the sub-hinge thereon and the mother hinge on the arc-shaped door frame through a hinge pin.

[0005] Three hanging ears I are evenly distributed above the door opening on the inner side surface of the arc-shaped door frame; and two hanging ears II are evenly distributed on the upper end surface of the upper frame of the arc-shaped door frame wall frame.

[0006] The rotation angle of the curved door on the curved door frame is greater than 100°.

[0007] The arc door can be configured as a single leaf or a double leaf.

[0008] An installation process of an assembled arc-shaped protective structure for the opening of a civil air defense project comprises the following steps:

[0009] Step 1, transporting the curved door, the curved door frame and the curved door frame wall frame to the designated installation location by a tunnel transport pulley;

[0010] Step 2, drilling anchor holes at the location of the tunnel wall where the curved door frame wall frame is to be installed, and installing anchors; the curved door frame wall frame is a prefabricated steel plate frame structure, and the upper frame, lower frame, left frame and right frame of the curved door frame wall frame are welded together on site, and the tail end of the anchor is welded to the inner side of the curved door frame wall frame; after welding, pouring concrete, connecting the curved door frame wall frame with the tunnel wall as a whole to provide support for the curved door frame; for tunnel projects using inner lining segments, exposed iron embedded parts can be reserved for the inner wall of the segment where the curved door frame wall frame is to be installed during the segment manufacturing stage, and the iron embedded parts are welded to the curved door frame wall frame;

[0011] Step 3, install the electric hoist at the hanging ear II of the curved door frame wall frame, adjust the position of the curved door frame so that the ear seat at the bottom end is docked with the ear plate at the bottom end of the curved door frame wall frame, and insert the pin into the through hole of the ear plate and the ear seat; then hang the steel cable of the electric hoist on the hanging ear I of the curved door frame; start the electric hoist to pull up the curved door frame so that the ear seat at the top is docked with the ear plate at the top of the curved door frame wall frame, and insert the pin into the through hole of the ear plate and the ear seat; the outer edges of the curved door frame and the door frame wall frame that are in contact are made of steel materials. After positioning is completed, the two are welded and fixed to complete precise positioning. After that, the two are fixed and sealed by double-sided welding. The outer welding operation space is narrow in some positions, but the inner welding operation space is sufficient, and it should be ensured that the whole circle is well welded;

[0012] Step 4, install the curved door, stand the curved door upright, align the sub-hinge on it with the main hinge on the curved door frame, then insert the hinge pin to connect the main hinge and sub-hinge to complete the installation.

[0013] The tunnel carrying pulley comprises an arc rod, a connecting rod and a pulley. Two arc rods are connected by a plurality of connecting rods, and two ends of the pulley are installed on two adjacent connecting rods.

[0014] The technical effects of the present invention are:

[0015] 1. Suitable for tunnel engineering excavated by full-section excavation technology. The structure in which the curved door is separated from the curved door frame wall frame makes it easier to install the curved door frame on the tunnel wall and ensures good structural strength.

[0016] 2. The curved door has better impact resistance. Compared with the traditional protective door, it has higher impact resistance under the same weight and lighter structural weight under the same impact resistance.

[0017] 3. By designing reasonable transportation and installation methods, it is convenient for overall transportation and installation in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall schematic diagram of the assembled arc-shaped protection structure for the opening of civil air defense engineering of the present invention;

[0019] Figure 2 A schematic diagram of the coordination between the curved door frame wall frame and the curved door frame of the assembled curved protection structure for the entrance of civil air defense projects of the present invention;

[0020] Figure 3 A schematic diagram of the coordination between the arc door frame and the arc door of the assembled arc protection structure for the entrance of a civil air defense project of the present invention;

[0021] Figure 4 Schematic diagram of the arc door frame wall frame of the assembled arc protection structure of the civil air defense project opening of the present invention;

[0022] Figure 5 A schematic diagram of the upper frame of the arc door frame wall frame of the assembled arc protection structure of the civil air defense project opening of the present invention;

[0023] Figure 6 A schematic diagram of the right frame of the arc door frame wall frame of the assembled arc protection structure of the civil air defense project opening of the present invention;

[0024] Figure 7 Schematic diagram of the arc door frame of the arc protection structure of the assembled civil air defense project opening of the present invention;

[0025] Figure 8 Schematic diagram of the arc door of the assembled arc protection structure of the civil air defense project entrance of the present invention;

[0026] Fig. 9 Schematic diagram of the tunnel carrying pulley of the assembled civil air defense project entrance arc protection structure of the present invention;

[0027] Fig.10 Schematic diagram of a tunnel carrying pulley for carrying a door frame of the assembled arc-shaped protection structure at the entrance of a civil air defense project according to the present invention;

[0028] Fig.11 A schematic diagram of the installation of the arc door frame and the arc door frame wall frame of the assembled arc protection structure of the civil air defense project entrance of the present invention;

[0029] 1- curved door, 101- sub-hinge, 2- curved door frame, 201- ear seat, 202- hanging ear Ⅰ, 203- mother hinge, 3- curved door frame wall frame, 301- upper frame, 302- right frame, 303- hanging ear Ⅱ, 304- ear plate, 4- tunnel carrying pulley, 401- curved rod, 402- connecting rod, 403- pulley, 5- cave wall, 6- electric hoist. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] like Figures 1 to 9 As shown, an assembled arc-shaped protective structure for the entrance of a civil air defense project comprises an arc-shaped door 1, an arc-shaped door frame 2 and an arc-shaped door frame wall frame 3; the arc-shaped door frame wall frame 3 comprises an upper frame 301, a lower frame, a left frame and a right frame 302, the two ends of the upper frame 301 are respectively welded to the upper flange arms of the left frame and the right frame 302, the lower flange arms of the left frame and the right frame 302 are respectively welded to the two ends of the lower frame, ear plates 304 are arranged on the outer surfaces of the upper frame 301 and the lower frame, the lower two ends of the arc-shaped door frame 2 are both provided with ear seats 201 cooperating with the ear plates 304, the arc-shaped door frame 2 is connected to the ear plates 304 on the arc-shaped door frame wall frame 3 through the ear seats 201 thereon by means of latches, the size of the arc-shaped door frame 2 is larger than the size of the doorway of the arc-shaped door frame wall frame 3, ensuring that the two are arranged in a superimposed manner; then The overlapping part of the arc door frame 2 and the arc door frame wall frame 3 is welded, a doorway is reserved on the arc door frame 2, a mother hinge 203 is arranged on one side of the outer arc doorway of the arc door frame 2, a sub-hinge 101 cooperating with the mother hinge 203 is arranged on one side of the arc door 1, and the arc door 1 is rotatably installed with the mother hinge 203 on the arc door frame 2 through the sub-hinge 101 thereon through the hinge pin; the sizes of the arc door frame wall frame 3, the arc door frame 2 and the arc door 1 are reduced successively, and in order to ensure the feasibility of the process, facilitate the realization of the matching relationship, and reduce the manufacturing cost, the above three all adopt the arc segment of a standard circle; the diameter of the sphere formed by the arc surface of the arc door frame 2 is 1.2-1.5 times the diameter of the tunnel wall 5, so as to ensure the installation matching relationship between the components, and the size of the arc door frame wall frame 3 is consistent with the size of the tunnel wall 5.

[0032] Three hanging ears Ⅰ 202 are evenly distributed above the doorway on the inner side surface of the arc-shaped door frame 2 ; two hanging ears Ⅱ 303 are evenly distributed on the upper end surface of the upper frame 301 of the arc-shaped door frame wall frame 3 .

[0033] The rotation angle of the arc door 1 on the arc door frame 2 is greater than 100°.

[0034] The arc door 1 can be configured as a single leaf or a double leaf.

[0035] like Fig.10 and Fig.11 As shown, an installation process of an assembled arc-shaped protective structure for the opening of a civil air defense project includes the following steps:

[0036] Step 1, transporting the curved door 1, the curved door frame 2 and the curved door frame wall frame 3 to a designated installation location by means of a tunnel carrying pulley 4;

[0037] Step 2, drilling anchor holes at the location of the cave wall 5 where the curved door frame wall frame 3 is to be installed, and installing the anchors; the curved door frame wall frame 3 is a prefabricated steel plate frame structure, and the upper frame 301, the lower frame, the left frame and the right frame 302 of the curved door frame wall frame 3 are welded together on site, and the tail end of the anchor is welded to the inner side of the curved door frame wall frame 3; after the welding is completed, pouring concrete, connecting the curved door frame wall frame 3 with the cave wall 5 as a whole to provide support for the curved door frame 2; for tunnel projects using inner lining segments, exposed iron embedded parts can be reserved for the inner wall of the segment where the curved door frame wall frame 3 is installed during the segment manufacturing stage, and the iron embedded parts are welded to the curved door frame wall frame 3;

[0038] Step 3, install the electric hoist 6 at the hanging ear II 303 of the curved door frame wall frame 3, adjust the position of the curved door frame 2, so that the ear seat 201 at the bottom end is docked with the ear plate 304 at the bottom end of the curved door frame wall frame 3, and insert the latch into the through hole of the ear plate 304 and the ear seat 201; then hang the steel cable of the electric hoist 6 on the hanging ear I 202 of the curved door frame 2; start the electric hoist 6 to pull up the curved door frame 2, so that the ear seat 201 at the top is docked with the ear plate 304 at the top of the curved door frame wall frame 3, and insert the latch into the through hole of the ear plate 304 and the ear seat 201; the outer edges of the curved door frame 2 and the door frame wall frame that are in contact are made of steel materials. After positioning is completed, the two are welded and fixed to complete precise positioning, and then the two are fixed and sealed by double-sided welding. The outer welding operation space at some positions is narrow, but the inner welding operation space is sufficient, and it should be ensured that the whole circle is well welded;

[0039] Step 4, install the curved door 1, stand up the curved door 1, align the sub-hinge 101 on it with the main hinge 203 on the curved door frame 2, and then insert the hinge pin to connect the main hinge 203 and the sub-hinge 101 to complete the installation.

[0040] The tunnel carrying pulley 4 includes an arc rod 401, a connecting rod 402 and a pulley 403. Two arc rods 401 are connected by a plurality of connecting rods 402. Both ends of the pulley 403 are installed on two adjacent connecting rods 402. A rubber pad is provided on the upper surface of the tunnel carrying pulley 4.

Claims

1. An assembled arc-shaped protective structure for the opening of a civil air defense project, characterized in that: The invention comprises an arc-shaped door, an arc-shaped door frame and an arc-shaped door frame wall frame; the arc-shaped door frame wall frame comprises an upper frame, a lower frame, a left frame and a right frame, two ends of the upper frame are respectively welded to the upper flange arms of the left frame and the right frame, and the lower flange arms of the left frame and the right frame are respectively welded to the two ends of the lower frame, and the outer surfaces of the upper frame and the lower frame are provided with ear plates, and the upper and lower ends of the arc-shaped door frame are both provided with ear seats matching with the ear plates, and the arc-shaped door frame is connected with the ear plates on the arc-shaped door frame wall frame through the ear seats thereon by means of latches, and then the connection between the arc-shaped door frame and the arc-shaped door frame wall frame is welded, a doorway is reserved on the arc-shaped door frame, a mother hinge is provided on one side of the outer arc surface doorway of the arc-shaped door frame, a sub-hinge matching with the mother hinge is provided on one side of the arc-shaped door, and the arc-shaped door is rotatably installed through the sub-hinge thereon and the mother hinge on the arc-shaped door frame through hinge pins; Three hanging ears I are evenly distributed above the door opening on the inner side of the arc-shaped door frame; two hanging ears II are evenly distributed on the upper end surface of the upper frame of the arc-shaped door frame wall frame; and the rotation angle of the arc-shaped door on the arc-shaped door frame is greater than 100°.

2. According to claim 1, the assembled arc-shaped protection structure for the opening of civil air defense projects is characterized by: The arc door can be arranged as a single leaf or a double leaf.

3. The installation process of the assembled arc-shaped protection structure for the opening of civil air defense engineering according to claim 1 is characterized in that: The following steps are involved: Step 1, transporting the curved door, the curved door frame and the curved door frame wall frame to the designated installation location by a tunnel transport pulley; Step 2, drilling anchor holes at the location of the tunnel wall where the curved door frame wall frame is to be installed, and installing anchors; the curved door frame wall frame is a prefabricated steel plate frame structure, and the upper frame, lower frame, left frame and right frame of the curved door frame wall frame are welded together on site, and the tail end of the anchor is welded to the inner side of the curved door frame wall frame; after welding, pouring concrete, connecting the curved door frame wall frame with the tunnel wall as a whole to provide support for the curved door frame; for tunnel projects using inner lining segments, exposed iron embedded parts can be reserved for the inner wall of the segment where the curved door frame wall frame is to be installed during the segment manufacturing stage, and the iron embedded parts are welded to the curved door frame wall frame; Step 3, install the electric hoist at the hanging ear II of the curved door frame wall frame, adjust the position of the curved door frame so that the ear seat at the bottom end is docked with the ear plate at the bottom end of the curved door frame wall frame, and insert the pin into the through hole of the ear plate and the ear seat; then hang the steel cable of the electric hoist on the hanging ear I of the curved door frame; start the electric hoist to pull up the curved door frame so that the ear seat at the top is docked with the ear plate at the top of the curved door frame wall frame, and insert the pin into the through hole of the ear plate and the ear seat; the outer edges of the curved door frame and the door frame wall frame that are in contact are made of steel materials. After positioning is completed, the two are welded and fixed to complete precise positioning. After that, the two are fixed and sealed by double-sided welding. The outer welding operation space is narrow in some positions, but the inner welding operation space is sufficient, and it should be ensured that the whole circle is well welded; Step 4, install the curved door, stand the curved door upright, align the sub-hinge on it with the main hinge on the curved door frame, then insert the hinge pin to connect the main hinge and sub-hinge to complete the installation.

4. The installation process of the assembled arc-shaped protection structure for the opening of civil air defense engineering according to claim 3 is characterized by: The tunnel carrying pulley comprises an arc rod, a connecting rod and a pulley. Two arc rods are connected by a plurality of connecting rods, and two ends of the pulley are installed on two adjacent connecting rods.

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