Fabricated light steel structure arc-shaped sill explosion door and mounting method

Abstract

The invention discloses a fabricated light steel structure arc-shaped sill explosion door and a mounting method, the fabricated light steel structure arc-shaped sill explosion door comprises a door frame fixedly mounted on a building wall and a door leaf mounted on the door frame, and an arc-shaped sill is arranged at the bottom of the door frame; the door leaf comprises a steel framework, a front shell and a rear shell, and a door leaf sealing piece is installed at the bottom of the door leaf. A locking component is installed on a door leaf and comprises a main locking assembly, an upper driven locking assembly and a lower driven locking assembly, the upper driven locking assembly and the lower driven locking assembly are arranged at the upper end and the lower end of the main locking assembly, a handle is installed on the main locking assembly, and the upper driven locking assembly is connected with the main locking assembly through a first connecting rod. The lower driven locking assembly is connected with the main locking assembly through a second connecting rod. The explosion-proof door has the advantages of light structure, strong stability and high production efficiency, is convenient to install and construct, is convenient for vehicles to pass through in an open state, has various locking states in a closed state, can realize locking by only needing one handle to realize multi-mode conversion of flat, urgent and battle, and is simple to operate.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof doors, and in particular to an assembled light steel structure arc-shaped sill explosion-proof door and an installation method thereof. Background Art

[0002] Explosion-proof doors are special doors designed to resist possible explosions in devices outside industrial buildings, protect the lives of personnel and the integrity of equipment inside industrial buildings, and are not harmed by explosion shock waves and effectively prevent the continuation of explosion hazards. It is usually composed of door frames, door leaves, hinges, locks and other components. The door frame is generally made of solid metal materials, such as steel, to ensure the overall stability and withstand the huge force generated by the explosion. There are many structural forms of door leaves. The most common one is a metal door panel structure filled with materials with good fireproof, heat-insulating, and explosion-resistant properties (such as rock wool, etc.). The thickness has corresponding requirements according to different explosion-proof levels. The hinges must be strong enough and can rotate flexibly to ensure that the door leaves can be opened and closed normally. At the same time, they are not easily damaged or fall off under the impact of explosions. The locks must also have a reliable locking function to prevent the door leaves from accidentally opening. At present, there are only two states of locking on the market: peacetime and wartime, that is, either unlocked or completely locked. The function is relatively single, and it cannot achieve the effect of opening and closing at will like a home anti-theft door, and the practical effect is poor. The door frame needs to be installed along with the construction of the building wall, which limits the construction time of the civil engineering and affects the construction period.

[0003] Traditionally, the on-site installation of door frames is undertaken by civil construction units. When pouring door frames, the construction plan is to support the formwork and pour the door frames together with the steel bars at the door frame wall after debugging and fixing. It mainly includes door frame positioning and formwork, installation of door frame embedded parts, concrete pouring, door frame installation, door frame fixing and adjustment, and installation of accessories and decorations. Due to the existence of civil construction errors, the accuracy of door frame installation cannot be guaranteed, resulting in certain problems in the installation of subsequent door leaves. In terms of construction procedures, other synchronous construction procedures on site are delayed due to the process of door frame installation, formwork and pouring. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled light steel structure arc-shaped sill explosion-proof door and an installation method. The explosion-proof door has the advantages of light structure, strong stability and high production efficiency, is easy to install and construct, is convenient for vehicles to pass through in the open state, has a variety of locking states in the closed state, and only needs one handle to achieve locking and conversion between flat, emergency and combat modes, and is simple to operate.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An assembled light steel structure arc-shaped sill explosion-proof door, comprising a door frame fixedly mounted on a building wall and a door leaf hingedly mounted on the door frame through a hinge, the door frame being fixed by a rear anchoring assembly, a hidden covering assembly being arranged on the rear anchoring assembly; a curved sill being fixedly arranged at the bottom of the door frame; the door leaf comprising a steel frame and a front shell and a rear shell wrapped and arranged outside the steel frame, a downwardly protruding sealing groove being arranged at the bottom of the rear shell, a door leaf seal being installed in the sealing groove; a locking component being installed on the door leaf, the locking component comprising a main locking component and an upper driven locking component and a lower driven locking component being arranged at upper and lower ends of the main locking component, a handle for changing the state of the main locking component being installed on the main locking component, the upper driven locking component being connected to the main locking component by a first connecting rod, the upper driven locking component being driven to change its state by the first connecting rod when the handle is rotated; the lower driven locking component being connected to the main locking component by a second connecting rod, the lower driven locking component being driven to change its state by the second connecting rod when the handle is rotated.

[0006] Preferably, the arc-shaped threshold is in an arch shape with the middle arched upward, and the top of the arc-shaped threshold contacts the door leaf seal to form a bottom seal; a raised portion is provided on one side of the arc-shaped threshold, and the raised portion is clamped on the bottom inner side of the door frame.

[0007] Preferably, the door frame consists of an upper frame and a left frame and a right frame fixedly arranged on both sides of the upper frame, and the upper frame, the left frame and the right frame are all made of steel plates using a roll forming process; a sealing groove is integrally provided on the door frame, and a sealing strip is installed in the sealing groove.

[0008] Preferably, the rear anchoring assembly comprises a rear anchoring hole provided on the door frame and a tension anchor bolt installed in the rear anchoring hole, and the door frame is fixedly installed on the building wall by passing the tension anchor bolt through the rear anchoring hole.

[0009] Preferably, the hidden covering assembly includes a dust cap whose color matches that of the door frame, and the dust cap is installed in the rear anchoring hole.

[0010] Preferably, the main locking assembly includes a first locking seat installed on the door leaf, a first locking cover detachably installed on the first locking seat, a door leaf shaft rotatably installed on the first locking seat, a first gear fixedly installed on the door leaf shaft, a first active locking head horizontally slidably arranged on the first locking seat, a first linkage rod vertically slidably arranged on the first locking seat, and a normally open lock head elastically slidably arranged on the first locking seat, and racks meshing with the first gear are provided on the first active locking head and the first linkage rod.

[0011] Preferably, a push rod is fixedly installed on the top of one end of the first active lock, and a limit rod is fixedly installed on the bottom of one end of the normally open lock, and when the upper driven locking assembly, the main locking assembly and the lower driven locking assembly are all in a closed state, the push rod contacts the limit rod; a spring is installed between the normally open lock and the end of the first locking seat, and the spring can make the normally open lock extend to the outside of the first locking seat.

[0012] Preferably, the hinge includes a hinge seat and a pivot arm hingedly connected by a hinge axis, and a pad can be removably installed at the bottom of the hinge seat and the pivot seat, a first waist-shaped hole is arranged on the hinge seat, and a second waist-shaped hole is arranged on the pivot arm, and the pad, the first waist-shaped hole and the second waist-shaped hole are used to adjust the three-directional displacement of the hinge installation.

[0013] Preferably, the upper driven locking assembly has the same structure as the lower driven locking assembly, including a second locking seat installed on the door leaf, a second locking cover detachably mounted on the second locking seat, a second gear rotatably mounted on the second locking seat, a second active lock head and a second passive lock head horizontally slidably arranged on the second locking seat, and a second linkage rod vertically slidably arranged on the second locking seat, and racks meshing with the second gear are provided on the second active lock head and the second linkage rod; the second active lock head and the second passive lock head are fixedly connected via a connecting rod.

[0014] Preferably, an arc-shaped lock tongue is provided at the end of the normally open lock head.

[0015] A method for installing an assembled light steel structure arc-shaped sill explosion-proof door comprises the following steps: Step 1: pouring concrete: first fix the position of the reserved sleeve at the door opening of the building structure, then pour concrete, wait for the concrete to solidify, and form a reserved hole at the position of the reserved sleeve; Step 2: Hoisting the door frame: hoist the door frame and place it in the position of the reserved sleeve. Use a level and a plumb line to adjust the position and angle of the door frame to ensure that the door frame is flat and vertical and aligned with the reserved sleeve. Step 3: Temporary fixation of the door frame: Use temporary supports or clamps to fix the door frame to the building structure to prevent the door frame from moving or tilting during installation; Step 4: Install the L-shaped angle plate: Install the L-shaped angle plate around the door frame, with one end of the L-shaped angle plate fixedly connected to the door frame and the other end of the L-shaped angle plate fixedly installed on the building structure; Step 5: Install the tension anchor bolts: Install the tension anchor bolts into the reserved sleeves and screw on the installation sleeves to ensure that the tension anchor bolts are properly tightened. Check whether the installation position of the tension anchor bolts is accurate. If there is any deviation, adjust it in time. Step 6: Fill the gap between the door frame and the building structure: Use concrete mortar or foamed flame retardant filler to fill the gap evenly and densely to avoid voids or bubbles. After filling, level the filled area to ensure that it is consistent with the surface of the door frame and the building structure; Step 7: Install the hinge; Step 8: Install the door leaf; Step nine: start and close debugging.

[0016] In the present invention, the upper frame, the left frame and the right frame are made by a rolling forming process, which has the advantages of light structure, easy manufacturing and high strength, and can be integrated by rolling to form a sealing groove, which is convenient for the installation of the sealing strip, so that the whole has good airtightness. The door frame is fixed on the building wall by a rear anchoring and hiding method. On the one hand, it avoids the practical problem that the traditional civil construction party needs to wait for the door frame to arrive and install before construction. The civil construction party can choose the construction time at will, and does not have to start construction after the door frame is installed. It can be poured first, and sufficient installation space for the door frame can be reserved. After the door frame arrives at the construction site, the entire door frame can be directly anchored on the already poured concrete structure by the rear anchor bolts. After installation, the gap between the door frame and the concrete frame mouth is filled and poured, which is convenient for installation; on the other hand, after the decoration of the hidden covering component is hidden, the installation traces of the rear anchor bolts cannot be seen from the front of the door frame, and the appearance is more beautiful.

[0017] The arc-shaped threshold is arranged to facilitate the passage of vehicles and has good passability. The arc-shaped top can be in close contact with the door leaf seal to form a seal and facilitate the opening and closing of the door leaf.

[0018] The front and rear shells in the door leaf are made by bending technology, and the connection with the hinge and the lock is riveted. The connection is simple and convenient, with good overall load-bearing, less welding, less deformation, and high production efficiency. The steel frame is composed of rectangular tubes and steel plates. The hinge is strengthened by vertical steel plates plus horizontal angle reinforcement plates, which not only guarantees the load-bearing capacity of the hinge, but also takes into account the demand for light weight. There are rivet nuts inside the door leaf. Screws are directly inserted from the hinge and the lock, and tightened in the rivet nuts inside the door leaf to fix it. This installation method abandons the traditional method of adding a thick welding base plate and processing internal threads, reduces the thickness requirements of the door leaf steel, reduces welding, and then reduces deformation, improves production efficiency, reduces the weight of the door leaf, and is more beautiful overall.

[0019] The upper driven locking assembly, the main locking assembly and the lower driven locking assembly can realize the three states of overall locking in peacetime, individual locking in temporary emergency and overall locking in wartime according to the control of the handle. Only one handle is needed to realize the lock conversion of peacetime, emergency and wartime modes. The operation is simple and error-prone. The gear rack transmission structure is selected so that the upper driven locking assembly, the main locking assembly and the lower driven locking assembly can work in linkage, making the opening force of the entire lock smaller and lighter, thereby greatly reducing the requirements on the strength of the opener and having a wider range of applications.

[0020] The post-installation method in this solution can: 1. Improve construction accuracy: During the wall pouring process, reserved sleeves are used to ensure the accuracy of door frame installation. The reserved sleeves provide precise positioning points for the door frame, which helps to avoid deviations during installation. 2. Enhance structural stability: The post-installation solution uses tension anchors to pass through reserved sleeves to fix the door frame, which enhances the structural stability of the door frame. 3. High construction flexibility: Compared with the traditional pouring solution, the post-pouring solution allows the door frame to be installed after the wall construction is completed, which provides greater flexibility for construction and helps to cope with different construction needs and conditions. 4. High installation efficiency: The post-installation process separates the concrete pouring and door frame installation processes. The installation process is relatively simple and quick, and there is no need to wait for the concrete to solidify like traditional pouring. 5. Easy maintenance: If the door frame or wall needs to be repaired or replaced, the design of the reserved sleeve makes it unnecessary to demolish or rebuild the entire wall, reducing the cost and difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the axial side of the door frame structure of the present invention; Figure 3 This is a schematic diagram of the axial side of the hinge reinforcement plate structure of the present invention; Figure 4 It is a schematic diagram of the right frame structure of the present invention; Figure 5 It is a schematic cross-sectional view of a local structure of the present invention; Figure 6 It is a schematic diagram of the front housing structure of the present invention; Figure 7 It is a schematic diagram of the rear housing structure of the present invention; Figure 8 This is a schematic diagram of the steel skeleton structure of the present invention; Fig. 9 It is an enlarged schematic diagram of the local structure of the door leaf of the present invention; Fig.10 This is a schematic diagram of the hinge structure of the present invention; Fig.11 It is a schematic diagram of the overall structure of the locking component of the present invention; Fig.12 It is a schematic diagram of the local structure of the locking component of the present invention in normal state; Fig.13 It is a schematic diagram of the local structure of the locking component of the present invention in a temporary emergency state; Fig.14 It is a schematic diagram of the partial structure of the locking component of the present invention in wartime state; Fig.15 This is a schematic diagram of the structure corresponding to step 1 of the present invention; Fig.16 This is a schematic diagram of the structure corresponding to step 4 of the present invention; In the figure: 1. door frame; 2. door leaf; 3. rear anchoring assembly; 4. hidden covering assembly; 5. curved threshold; 6. locking component; 7. hinge; 8. L-shaped angle plate; 9. reserved sleeve; 10. upper frame; 11. left frame; 12. right frame; 13. hinge reinforcement plate; 14. sealing groove; 15. sealing strip; 20. steel frame; 21. front shell; 22. rear shell; 23. transverse angle reinforcement plate; 24. sealing groove; 25. door leaf seal; 30. rear anchoring hole; 31. tension anchor bolt; 60. main locking assembly; 61. upper driven locking assembly; 62. lower driven locking assembly; 63. handle; 64. first connecting rod Rod; 65, second connecting rod; 70, hinge shaft; 71, hinge seat; 72, pivot arm; 73, pad; 74, first waist-shaped hole; 75, second waist-shaped hole; 600, first locking seat; 601, first locking cover; 602, fan shaft; 603, first gear; 604, first active lock; 605, first linkage rod; 606, normally open lock; 607, push rod; 608, limit rod; 609, spring; 610, second locking seat; 611, second locking cover; 612, second gear; 613, second active lock; 614, second passive lock; 615, second linkage rod; 616, connecting rod. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings: like Figures 1 to 16 An assembled light steel structure arc-shaped sill explosion-proof door shown in the figure comprises a door frame 1 fixedly mounted on a building wall and a door leaf 2 hingedly mounted on the door frame 1 through hinges. The side of the door leaf 2 is hingedly mounted on the door frame 1 through two or more hinges 7. Hinge rivet holes are provided on the door leaf 2, and eyelet screw rivet holes are provided on the top of the door leaf 2. Eyelet screws are fixedly set on the eyelet screw rivet holes by riveting. The eyelet screws provide a lifting point for the explosion-proof door, which is convenient for lifting operations.

[0023] The hinge 7 includes a hinge seat 71 and a pivot arm 72 which are hingedly connected by a hinge shaft 70. A shim plate 73 can be detachably installed at the bottom of the hinge seat 71 and the pivot seat 72. The shim plate 73 is used to adjust the installation height on the door frame 1 or the door leaf 2 to ensure installation accuracy. A first waist-shaped hole 74 is provided on the hinge seat 71, and a second waist-shaped hole 75 is provided on the pivot arm 72. The shim plate 73, the first waist-shaped hole 74 and the second waist-shaped hole 75 are used to adjust the displacement of the hinge 7 in three directions to ensure the installation accuracy of the hinge 7.

[0024] The door frame 1 is composed of an upper frame 10 and a left frame 11 and a right frame 12 fixedly arranged on both sides of the upper frame 10 by welding. The upper frame 10, the left frame 11 and the right frame 12 are all made of steel plates by a roll forming process. A hinge reinforcement plate 13 is installed on the left frame 11 or the right frame 12 by welding, and the hinge connecting the door leaf 2 and the door frame 1 is installed on the hinge reinforcement plate 13. Most of the connections between the hinge reinforcement plate 13 and the door frame 1 can be intermittently welded or even spot welded, with a small amount of welding, greatly reduced welding deformation, beautiful appearance, and high production efficiency.

[0025] The door frame 1 is provided with a sealing groove 14, and a sealing strip 15 is installed in the sealing groove 14. The sealing groove 14 is formed in one piece when the door frame 1 is rolled, which not only improves the structural strength, but also increases the installation space for the sealing strip 15. The sealing groove 14 is provided with two parallel and spaced apart strips, which has a strong airtightness. The sealing strip 15 is composed of two strips, one high and one low. The high one has great flexibility and is easy to deform, while the low one has little flexibility. The combination of the two flexibility makes the airtightness higher.

[0026] The door frame 1 is fixed by the rear anchor assembly 3, which includes a rear anchor hole 30 provided on the door frame 1 and a tension anchor bolt 31 installed in the rear anchor hole 30. The tension anchor bolt 31 is passed through the rear anchor hole 30 to fix the door frame 1 on the building wall. After installation, the tension anchor bolt 31 is recessed in the rear anchor hole 30. A reinforcement sleeve is provided on the back of the hinge reinforcement plate 13, which provides sufficient installation space for the tension anchor bolt 31 while ensuring the shaping of the door frame 1 and improving the stability of the structure.

[0027] A hidden cover component 4 is provided on the rear anchor component 3. The hidden cover component 4 includes a dust cap whose color matches the door frame 1. The dust cap is installed in the rear anchor hole 30 to cover the tension anchor bolt 31. During the installation operation, after the tension anchor bolt 31 is installed, the dust cap is plugged in. The top surface of the dust cap is flush with the door frame 1. The dust cap and the door frame 1 are sprayed with the same color of topcoat. In this way, after the door frame 1 is installed, no installation traces of the tension anchor bolt 31 can be seen from the front of the door frame 1, and the appearance is more beautiful. The door frame 1 adopts the rear anchor installation method, which well solves the practical problem that the traditional civil construction party needs to wait for the door frame to arrive and be installed before construction. By adopting the door frame 1, the civil construction party can choose the construction time at will, and it is not necessary to start construction after the door frame 1 is installed. The pouring construction can be carried out first, and sufficient installation space for the door frame 1 can be reserved. After the door frame 1 arrives at the construction site, the tension anchor bolts 31 can be used to directly anchor the entire door frame 1 to the already poured concrete structure. After installation, the gap between the door frame 1 and the concrete frame opening is filled and poured, which is convenient for installation.

[0028] The door leaf 2 includes a steel frame 20 and a front shell 21 and a rear shell 22 fixedly wrapped and arranged on the outside of the steel frame 20. The front shell 21 and the rear shell 22 are fixedly installed on the outside of the steel frame 20 by riveting. The steel frame 20 is spliced ​​by rectangular tubes and steel plates. A transverse angle reinforcing plate 23 is fixedly installed at the hinge to ensure the bearing capacity of the hinge and take into account the requirement of light weight. A downwardly protruding sealing groove 24 is fixedly arranged at the bottom of the rear shell 22. A door leaf seal 25 is installed in the sealing groove 24. When the door leaf 2 is in a closed state, the door leaf seal 25 is squeezed on the top of the arc threshold 5. A rivet nut is provided inside the door leaf 2. Screws are directly inserted from the hinge and the locking part, and the rivet nut inside the door leaf 2 is tightened to fix it. This installation form abandons the traditional method of adding a thick welding base plate and processing internal threads, reduces the thickness requirements of the door leaf steel, reduces welding, and then reduces deformation, improves production efficiency, reduces the weight of the door leaf, and is more beautiful overall.

[0029] A curved threshold 5 is fixedly arranged at the bottom of the door frame 1. The curved threshold 5 is in an arch shape with the middle arched upward. The top of the curved threshold 5 contacts the door leaf seal 25 to form a bottom seal, and cooperates with the sealing strip 15 located on the door frame 1 to form a closed sealing system, so that the two sides of the door leaf 2 are completely isolated after closing. A raised portion is arranged on one side of the curved threshold 5, and the raised portion is stuck on the inner side of the bottom of the door frame 1. The raised portion and the door frame 1 are fixed by welding, and the curved threshold 5 is fixed to the bottom of the building wall by expansion bolts.

[0030] A locking component 6 is installed on the door leaf 2, and the locking component 6 includes a main locking component 60 fixedly installed on the door leaf 2, and an upper driven locking component 61 and a lower driven locking component 62 arranged on the door leaf 2 and located at the upper and lower ends of the main locking component 60. A handle 63 for changing the state of the main locking component 60 is installed on the main locking component 60. The upper driven locking component 61 is connected to the main locking component 60 through a first connecting rod 64. When the operator controls the handle 63 to rotate, the upper driven locking component 61 is driven to change its state through the first connecting rod 64; the lower driven locking component 62 is connected to the main locking component 60 through a second connecting rod 65. When the operator controls the handle 63 to rotate, the lower driven locking component 62 is driven to change its state through the second connecting rod 65.

[0031] The main locking assembly 60 includes a first locking seat 600 fixedly mounted on the door leaf 2 by rivets, a first locking cover 601 detachably mounted on the first locking seat 600 by bolts, a through-sash shaft 602 rotatably mounted on the first locking seat 600 by bearings, a first gear 603 fixedly mounted on the through-sash shaft 602, a first active lock 604 horizontally slidably mounted on the first locking seat 600, a first linkage rod 605 vertically slidably mounted on the first locking seat 600, and a normally open lock 606 elastically slidably mounted on the first locking seat 600. A rack meshing with the first gear 603 is provided on the first active lock 604 and the first linkage rod 605. When the first gear 603 rotates, the rack can drive the first active lock 604 to slide horizontally and the first linkage rod 605 to slide vertically. The handle 63 is fixedly mounted on the through-sash shaft 602. The operator controls the through-sash shaft 602 to rotate by rotating the handle 63, thereby controlling the rotation of the first gear 603. When the first locking cover 601 is installed on the first locking seat 600, there are two locking tracks between the two. The first active locking head 604 and the normally open locking head 606 are respectively located in one locking track and slide horizontally therein.

[0032] A push rod 607 is fixedly installed on the top of one end of the first active lock 604, and a limit rod 608 is fixedly installed on the bottom of one end of the normally open lock 606. When the upper driven locking assembly 61, the main locking assembly 60 and the lower driven locking assembly 62 are all in the closed state, the push rod 607 contacts the limit rod 608, so that the normally open lock 606 is hidden in the first locking seat 600. A spring 609 is installed between the normally open lock 606 and the end of the first locking seat 600. In the absence of the restriction of the push rod 607, the spring 609 can make one end of the normally open lock 606 extend to the outside of the first locking seat 600. An arc-shaped lock tongue or a broken line lock tongue is provided at the end of the normally open lock 606, and an arc-shaped lock tongue is preferably used in this embodiment.

[0033] The upper driven locking assembly 61 has the same structure as the lower driven locking assembly 62, and both include a second locking seat 610 fixedly mounted on the door leaf 2 by rivets, a second locking cover 611 detachably mounted on the second locking seat 610 by fasteners, a second gear 612 rotatably mounted on the second locking seat 610 by a pin shaft, a second active lock head 613 and a second passive lock head 614 horizontally slidably mounted on the second locking seat 610, and a second linkage rod 615 vertically slidably mounted on the second locking seat 610, a rack meshing with the second gear 612 is disposed on the second active lock head 613 and the second linkage rod 615, the second active lock head 613 and the second passive lock head 614 are fixedly connected by a connecting rod 616, and the two slide synchronously to ensure the same posture. The second linkage rod 615 is connected to the first linkage rod 605 by the first connecting rod 64 or the second connecting rod 65. When the second locking cover 611 is installed on the second locking seat 610, two locking tracks are provided between the two. The second active locking head 613 and the second passive locking head 614 are respectively located in one locking track and slide horizontally therein.

[0034] The locking device disclosed in this specification has three working states, one of which is a normal state. In this state, all the first active lock head 604, the normally open lock head 606, the second active lock head 613 and the second passive lock head 614 are in a closed state, that is, they are retracted in the first locking seat 600 or the second locking seat 610, and the door is in an open state.

[0035] The specific operation is: rotate the handle 63 clockwise upward to the bottom, so that the first active lock 604 is retracted, and the push rod 607 thereon pushes the normally open lock 606 to be retracted through the limit rod 608, so that the first active lock 604 and the normally open lock 606 are fully retracted; and the handle 63 drives the first gear 603, and the first gear 603 drives the first linkage rod 605 to move upward through the rack, and the first linkage rod 605 drives the second gear 612 in the upper driven locking assembly 61 and the lower driven locking assembly 62 to rotate clockwise through the first connecting rod 64 and the second connecting rod 65, thereby driving the second active lock 613 and the second passive lock 614 to be fully retracted.

[0036] The second is a temporary emergency state. By rotating the handle 63, only the normally open lock 606 is opened, and the other first active lock 604, second active lock 613 and second passive lock 614 are all in a closed state. At this time, the door can rotate the handle 63 to open the normally open lock 606 like a household door or an anti-theft door, so as to realize the function of opening the door at any time. When closing the door, the normally open lock 606 will automatically open, making the door in a tightly closed state. There is no need to rotate the handle 63, and the operation is simple and convenient.

[0037] The specific operation is: the handle 63 is rotated counterclockwise downward, so that the first active lock head 604 drives the push rod 607 to be pushed forward, and the space released by the movement of the push rod 607 allows the limit rod 608 and the normally open lock head 606 to extend freely, thereby realizing the opening of the normally open lock head 606. At this time, the first active lock head 604, the second active lock head 613 and the second passive lock head 614 are all in the closed state; and the handle 63 drives the first gear 603, and the first gear 603 drives the first linkage rod 605 to move downward through the rack, and the first linkage rod 605 drives the second gear 612 in the upper driven locking assembly 61 and the lower driven locking assembly 62 to rotate counterclockwise through the first connecting rod 64 and the second connecting rod 65, thereby driving the second active lock head 613 of the upper driven locking assembly 61 and the lower driven locking assembly 62 to be properly released, and at the same time, the second passive lock head 614 is driven to be released together through the connecting rod 616.

[0038] The third is the wartime state, by rotating the handle 63, the first active lock 604, the normally open lock 606, the second active lock 613 and the second passive lock 614 are all in the open state.

[0039] The specific operation is as follows: the handle 63 is rotated counterclockwise downward to the bottom, so that the first active lock 604 is opened; the handle 63 drives the first gear 603, and the first gear 603 drives the first linkage rod 605 to move downward through the rack, and the first linkage rod 605 drives the second gear 612 in the upper driven locking assembly 61 and the lower driven locking assembly 62 to rotate counterclockwise through the first link 64 and the second link 65, and then the second active lock 613 of the upper driven locking assembly 61 and the lower driven locking assembly 62 are gradually extended, and at the same time, the second passive lock 614 is driven to open together through the connecting rod 616. At this time, the door can be opened by rotating the handle 63 clockwise to achieve the action of opening the door.

[0040] like Figure 1 to Figure 14 The installation method of a prefabricated light steel structure arc-shaped sill explosion-proof door shown in the figure comprises the following steps: Step 1, pouring concrete: first fix the position of the reserved sleeve 9 at the door opening of the building structure, then pour concrete, wait for the concrete to solidify, and form a reserved hole at the position of the reserved sleeve 9, which is used to fix the door frame 1, hinge 7 and curved threshold 5.

[0041] Step 2, hoisting the door frame 1: use a crane or manually to lift the door frame, align it with the position of the reserved sleeve 9 for preliminary placement, and use a level and plumb meter to adjust the position and angle of the door frame to ensure that the door frame 1 is flat and vertical, and aligned with the reserved sleeve 9.

[0042] Step 3: Temporary fixation of the door frame 1: Use temporary supports or clamps to fix the door frame 1 to the building structure to prevent the door frame 1 from moving or tilting during installation. The temporary fixation should be firm and reliable to ensure that the door frame 1 remains stable before the tension anchor bolts 31 are installed.

[0043] Step 4: Install the L-shaped angle plate 8. Install the L-shaped angle plate 8 around the door frame. One end of the L-shaped angle plate 8 is fixedly connected to the door frame 1, and the other end of the L-shaped angle plate 8 is fixedly installed on the building structure.

[0044] Step 5: Install the tension anchor 31: Use a special electric tool to install the tension anchor into the reserved sleeve 9, and screw on the installation sleeve to ensure that the tension anchor 31 is properly tightened. Check whether the installation position of the tension anchor 31 is accurate. If there is any deviation, adjust it in time.

[0045] Step 6. Fill the gap between the door frame 1 and the building structure: Use concrete mortar or foamed flame retardant filler to fill the gap evenly and densely to avoid voids or bubbles. After filling, level the filled area to ensure that it is consistent with the door frame 1 and the surface of the building structure.

[0046] Step 7: Install hinge 7.

[0047] Step 8: Install door leaf 2.

[0048] Step 9, opening and closing debugging: repeatedly open and close the door leaf 2, and adjust the hinge 7 to make the door leaf 2 and the door frame 1 to the appropriate position.

[0049] The above embodiments are only some illustrations of the concept and implementation of the present invention, and are not intended to limit the same. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. An assembled light steel structure arc-shaped sill explosion-proof door, comprising a door frame (1) fixedly mounted on a building wall and a door leaf (2) hingedly mounted on the door frame (1) via a hinge (7), characterized in that: The door frame (1) is fixed by a rear anchoring assembly (3), and a hidden cover assembly (4) is arranged on the rear anchoring assembly (3); a curved threshold (5) is fixedly arranged at the bottom of the door frame (1); the door leaf (2) comprises a steel frame (20) and a front shell (21) and a rear shell (22) wrapped around the outside of the steel frame (20); a downwardly protruding sealing groove (24) is arranged at the bottom of the rear shell (22), and a door leaf seal (25) is installed in the sealing groove (24); a locking component (6) is installed on the door leaf (2), and the locking component (6) comprises a main locking component (60) and two locking members (25) arranged at the upper and lower ends of the main locking component (60) An upper driven locking assembly (61) and a lower driven locking assembly (62) are provided at the upper end of the main locking assembly (60); a handle (63) for changing the state of the main locking assembly (60) is mounted on the main locking assembly (60); the upper driven locking assembly (61) and the main locking assembly (60) are connected via a first connecting rod (64); when the handle (63) rotates, the upper driven locking assembly (61) is driven to change its state via the first connecting rod (64); and the lower driven locking assembly (62) and the main locking assembly (60) are connected via a second connecting rod (65); when the handle (63) rotates, the lower driven locking assembly (62) is driven to change its state via the second connecting rod (65).

2. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 1 is characterized by: The arc-shaped threshold (5) is in an arch shape with the middle part arched upwards, and the top of the arc-shaped threshold (5) contacts the door leaf seal (25) to form a bottom seal; a raised portion is provided on one side of the arc-shaped threshold (5), and the raised portion is clamped on the inner side of the bottom of the door frame (1).

3. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 1 or 2 is characterized in that: The door frame (1) comprises an upper frame (10) and a left frame (11) and a right frame (12) fixedly arranged on both sides of the upper frame (10); the upper frame (10), the left frame (11) and the right frame (12) are all made of steel plates by a roll forming process; a sealing groove (14) is integrally provided on the door frame (1), and a sealing strip (15) is installed in the sealing groove (14).

4. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 3 is characterized by: The rear anchoring assembly (3) comprises a rear anchoring hole (30) provided on the door frame (1) and a tension anchor bolt (31) installed in the rear anchoring hole (30); the tension anchor bolt (31) is passed through the rear anchoring hole (30) to fix the door frame (1) on the building wall.

5. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 4 is characterized by: The hidden covering component (4) comprises a dust cap whose color matches that of the door frame (1), and the dust cap is installed in the rear anchoring hole (30).

6. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 1, 2, 4 or 5, characterized in that: The main locking assembly (60) comprises a first locking seat (600) mounted on the door leaf (2), a first locking cover (601) detachably mounted on the first locking seat (600), a door leaf shaft (602) rotatably mounted on the first locking seat (600), a first gear (603) fixedly mounted on the door leaf shaft (602), a first active lock head (604) horizontally slidably arranged on the first locking seat (600), a first linkage rod (605) vertically slidably arranged on the first locking seat (600), and a normally open lock head (606) elastically slidably arranged on the first locking seat (600), and a rack meshingly connected to the first gear (603) is arranged on the first active lock head (604) and the first linkage rod (605).

7. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 6 is characterized by: A push rod (607) is fixedly mounted on the top of one end of the first active lock (604), and a limit rod (608) is fixedly mounted on the bottom of one end of the normally open lock (606); when the upper driven locking assembly (61), the main locking assembly (60) and the lower driven locking assembly (62) are all in a closed state, the push rod (607) is in contact with the limit rod (608); a spring (609) is installed between the normally open lock (606) and the end of the first locking seat (600), and the spring (609) can enable the normally open lock (606) to extend to the outside of the first locking seat (600).

8. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 1 is characterized by: The hinge (7) comprises a hinge seat (71) and a rotating shaft arm (72) which are hingedly connected via a hinge shaft (70); a backing plate (73) is detachably mounted at the bottom of the hinge seat (71) and the rotating shaft seat (72); a first waist-shaped hole (74) is arranged on the hinge seat (71); and a second waist-shaped hole (75) is arranged on the rotating shaft arm (72); the backing plate (73), the first waist-shaped hole (74) and the second waist-shaped hole (75) are used to adjust the displacement of the hinge (7) in three directions during installation.

9. The assembled light steel structure arc-shaped sill explosion-proof door according to claim 1 or 7, characterized in that: The upper driven locking assembly (61) has the same structure as the lower driven locking assembly (62), and comprises a second locking seat (610) mounted on the door leaf (2), a second locking cover (611) detachably mounted on the second locking seat (610), a second gear (612) rotatably mounted on the second locking seat (610), a second active lock head (613) and a second passive lock head (614) horizontally slidably mounted on the second locking seat (610), and a second linkage rod (615) vertically slidably mounted on the second locking seat (610), wherein a rack meshingly connected to the second gear (612) is disposed on the second active lock head (613) and the second linkage rod (615); the second active lock head (613) and the second passive lock head (614) are fixedly connected via a connecting rod (616).

10. A method for installing an assembled light steel structure arc-shaped sill explosion-proof door according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, pouring concrete: first fix the position of the reserved sleeve (9) at the door opening of the building structure, then pour concrete, wait for the concrete to solidify, and form a reserved hole at the position of the reserved sleeve (9); Step 2: Hoisting the door frame (1): hoist the door frame and align it with the position of the reserved sleeve (9) for preliminary placement. Use a level and a plumb line to adjust the position and angle of the door frame to ensure that the door frame (1) is flat and vertical and is aligned with the reserved sleeve (9); Step 3: Temporarily fix the door frame (1): use a temporary support or clamp to fix the door frame (1) to the building structure to prevent the door frame (1) from moving or tilting during the installation process; Step 4: Install the L-shaped angle plate (8): install the L-shaped angle plate (8) around the door frame, one end of the L-shaped angle plate (8) is fixedly connected to the door frame (1), and the other end of the L-shaped angle plate (8) is fixedly installed on the building structure; Step 5: Install the tension anchor bolt (31): Install the tension anchor bolt into the reserved sleeve (9), and screw on the installation sleeve to ensure that the tension anchor bolt (31) is properly tightened. Check whether the installation position of the tension anchor bolt (31) is accurate. If there is any deviation, adjust it in time. Step 6: Fill the gap between the door frame (1) and the building structure with concrete mortar or foamed flame retardant filler. The filling should be uniform and dense to avoid voids or bubbles. After the filling is completed, the filled area is leveled to ensure that it is consistent with the door frame (1) and the building structure surface; Step 7: Install the hinge (7); Step 8: Install the door leaf (2); Step nine: start and close debugging.

Images