Positioning and fixing device for installing door frame of civil air defense door

Abstract

The invention belongs to the technical field of door frame installation, particularly relates to a positioning and fixing device for civil air defense door frame installation, and aims to solve the problems that an existing door frame cannot be subjected to position adjustment according to use requirements during installation and cannot be subjected to positioning adjustment when being installed on walls of different sizes. Positioning grooves are formed in four sides of the door frame; the two side surface fixing plates are positioned in the positioning groove and are symmetrically arranged; the two side face adjusting mechanisms are installed on the two sides of the door frame, connected with the two side face fixing plates and used for adjusting the positions of the two side face fixing plates. The top fixing plate is located in the positioning groove in the top of the door frame, a plurality of inserting rods are fixedly installed at the top of the top fixing plate, the tops of the inserting rods are pointed ends, and four guide rods are fixedly installed at the bottom of the top fixing plate. And the device is suitable for being mounted on walls with different sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of door frame installation, and in particular to a positioning and fixing device for installing a door frame of a civil air defense door. Background Art

[0002] Civil air defense projects are important projects for protecting the safety of life and property of the country and the people. The country and various regions are paying more and more attention to the construction of civil air defense projects. Among them, civil air defense doors are an important part of civil air defense projects. Civil air defense doors are doors at the entrances and exits of civil air defense projects. They include door frames and door leaves. One side of the door leaf is hinged in the door frame, and the other side is locked with the door frame through a locking device. The existing installation of civil air defense doors is usually pre-embedded before the steel bars are poured. First, the two sides of the door frame are welded together with the steel bars at the reserved position, and then the steel bars are welded on the door frame to support the door frame. The door frame is fixed together by pouring concrete. The position of the door frame is difficult to adjust. The door frame of the civil air defense door is heavy, which is easy to deform the steel bars. The position of the door frame is easy to shift, which reduces the accuracy of pre-embedded. After the pouring is completed, the steel bars can be cut and disassembled, which is time-consuming and labor-intensive, reducing work efficiency, and easily leaving welding points on the door frame, reducing the aesthetics.

[0003] Publication (announcement) number: CN118166996A discloses a positioning and fixing device for installing a civil air defense door frame, including a supporting frame, a magnetic plate installed at the bottom of the supporting frame, a door frame fixing mechanism provided on the supporting frame, and a positioning and supporting mechanism provided on the supporting frame; the door frame fixing mechanism includes a multi-stage hydraulic cylinder, a lifting frame, an anti-slip top plate and a fixing part, the multi-stage hydraulic cylinder is installed on the top of the supporting frame, two multi-stage hydraulic cylinders are provided, the lifting frame is installed on the telescopic end of the multi-stage hydraulic cylinder, the anti-slip top plate is installed on the top of the lifting frame, and the fixing part fixes the civil air defense door frame; the positioning and supporting mechanism includes a supporting part, a fine-tuning part and a positioning locking part.

[0004] The existing door frame installation cannot be adjusted according to the use requirements, and the positioning cannot be adjusted when installed on walls of different sizes. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings that the existing door frame installation cannot be adjusted according to the use requirements and cannot be positioned and adjusted when installed on walls of different sizes, and to propose a positioning and fixing device for the installation of a civil air defense door frame.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A positioning and fixing device for installing a door frame of a civil air defense door, comprising:

[0008] Door frame, with positioning grooves on all four sides of the door frame;

[0009] Two side fixing plates are located in the positioning groove and are symmetrically arranged;

[0010] Two side adjustment mechanisms are installed on both sides of the door frame and connected to the two side fixing plates to adjust the positions of the two side fixing plates;

[0011] A top fixing plate is located inside the positioning groove at the top of the door frame, a plurality of plug rods are fixedly installed on the top of the top fixing plate, the tops of the plug rods are pointed, four guide rods are fixedly installed on the bottom of the top fixing plate, four guide holes are opened on the top of the door frame, and the four guide rods are slidably connected to the inner walls of the four guide holes;

[0012] A top adjustment mechanism is installed on the top of the door frame and connected to the top fixing plate to adjust the position of the top fixing plate;

[0013] The linkage mechanism is located inside the positioning groove and is connected with the top adjustment mechanism and the two side adjustment mechanisms to realize the linkage between the top adjustment mechanism and the two side adjustment mechanisms;

[0014] The protective shell is welded to the inner side of the door frame to form a sealed space with the door frame; it is used to protect the two side adjustment mechanisms, the top adjustment mechanism, and the linkage mechanism.

[0015] Preferably, the side adjustment mechanism includes an internal threaded cylinder, circular holes are provided on both sides of the door frame, the internal threaded cylinder is rotatably connected to the circular hole through a first bearing, an internal thread is provided in the internal threaded cylinder, a threaded rod is connected to the internal thread of the internal threaded cylinder, and the outer end of the threaded rod is fixedly installed on the side fixing plate; the two internal threaded cylinders drive the two threaded rods to move outward, and the two threaded rods push the two side fixing plates to move outward and conflict with the inner wall of the mounting groove.

[0016] Preferably, four sliding rods are fixedly installed inside the side fixing plate, four mounting holes are opened on both sides of the door frame, cylinders are fixedly installed in the mounting holes, and the sliding rods are slidably connected to the inner walls of the cylinders; the cooperation between the sliding rods and the cylinders can ensure the horizontal movement of the side fixing plate.

[0017] Preferably, the top adjustment mechanism includes a screw rod, a through hole is opened at the top center position of the door frame, the screw rod is rotatably connected to the through hole through a second bearing, the top end of the screw rod is fixedly installed on the bottom of the top fixing plate, and a crank structure is installed at the bottom end of the screw rod.

[0018] Preferably, the crank structure includes a four-sided rod and a rocking plate, a four-sided groove is opened at the bottom end of the screw rod, the four-sided rod is slidably connected to the inner wall of the four-sided groove, the bottom end of the four-sided rod is fixedly installed with a rocking plate, and the rocking rod is rotatably installed at the eccentric position of the rocking plate; the four-sided rod is slidably connected to the four-sided groove, and when rotating, the four-sided rod can drive the screw rod to rotate through the four-sided groove.

[0019] Preferably, a tension spring is fixedly installed between the top end of the four-side rod and the four-side groove; the tension spring provides a reset tension for the four-side rod.

[0020] Preferably, limiting grooves are provided on both sides of the four-side rod, and limiting blocks are fixedly installed on the inner walls of both sides of the four-side grooves, and the two limiting blocks are slidably connected to the inner walls of the two limiting grooves to ensure that the four-side rod will not leave the four-side grooves.

[0021] Preferably, an operating hole is opened at the center position of the top of the protective shell, two support blocks are fixedly installed on the inner wall of the operating hole, locking rods are fixedly installed on the bottom of the two support blocks, and a plurality of locking grooves are opened on the top of the rocking plate, and the plurality of locking grooves are arranged in a ring shape, and the two locking rods cooperate with the two locking grooves; and are used to fix the rocking plate.

[0022] Preferably, the linkage mechanism includes two vertical rods and two transverse rods, four third bearings are fixedly installed between the protective shell and the door frame, and the two vertical rods and the two transverse rods are fixedly installed with the inner rings of the four third bearings.

[0023] Preferably, the inner ends of the two horizontal rods are fixedly installed with a first bevel gear, the outer side of the screw is sleeved with a second bevel gear, the two first bevel gears are meshed with the second bevel gear, the outer ends of the two horizontal rods are fixedly installed with a second bevel gear, the top ends of the two vertical rods are fixedly installed with a first bevel gear, the first bevel gear is meshed with the second bevel gear, the bottom ends of the two vertical rods are fixedly installed with a second linkage gear, the inner ends of the two internally threaded cylinders are fixedly installed with a first linkage gear, and the two first linkage gears are meshed with the two second linkage gears.

[0024] In the present invention, the beneficial effects of the positioning and fixing device for installing the door frame of a civil air defense door are:

[0025] In this solution, the door frame is installed in the installation groove of the door hole, the rocker is pulled to drive the rocker plate to move, the rocker plate drives the four-side rods to slide in the four-side grooves, the locking rod leaves the corresponding locking groove to release the fixation of the rocker plate, the rocker is shaken to drive the four-side rods to rotate through the rocker plate, the four-side rods drive the screw to rotate through the four-side grooves, the screw drives the top fixing plate to move upward, and the top fixing plate drives the plug rod to move upward and conflict with the inner wall of the installation groove;

[0026] In this solution, the screw drives two transverse rods to rotate through the second bevel gear and the first bevel gear, and the two transverse rods drive two first bevel gears to drive two vertical rods to rotate through the two second bevel gears, and the two vertical rods drive two first linkage gears to rotate through the two second linkage gears, and the two first linkage gears drive two internal threaded cylinders to rotate, and the two internal threaded cylinders drive the two threaded rods to move outward, and the two threaded rods push the two side fixing plates to move outward and conflict with the inner wall of the installation groove, so that the door frame can be fixed and can be adapted to the installation and use of walls of different sizes;

[0027] In this solution, the rocker arm is loosened, and the locking rod is reinserted into the corresponding locking groove through the tension of the tension spring, so that the rocker plate can be fixed.

[0028] The invention has a simple structure, can conveniently fix the door frame in the door hole of the wall, and can be installed and used on walls of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of a positioning and fixing device for installing a door frame of a civil air defense door proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the door frame proposed by the present invention;

[0031] Figure 3 This is a schematic structural diagram of part A of a positioning and fixing device for installing a door frame of a civil air defense door proposed by the present invention;

[0032] Figure 4 This is a schematic structural diagram of part B of a positioning and fixing device for installing a door frame of a civil air defense door proposed by the present invention;

[0033] Figure 5 This is a schematic structural diagram of part C of a positioning and fixing device for installing a door frame of a civil air defense door proposed by the present invention;

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of the side fixing plate and the anti-slip pad proposed by the present invention.

[0035] In the figure: 1, door frame; 2, positioning groove; 3, side fixing plate; 4, top fixing plate; 5, internal thread cylinder; 6, internal thread; 7, threaded rod; 8, first bearing; 9, first linkage gear; 10, second linkage gear; 11, vertical rod; 12, cylinder; 13, slide rod; 14, protective shell; 15, first bevel gear; 16, second bevel gear; 17, transverse rod; 18, guide rod; 19, plug rod; 20, through hole; 21, screw rod; 22, second bearing; 23, four-side groove; 24, tension spring; 25, four-side rod; 26, limit groove; 27, limit block; 28, rocker plate; 29, rocker; 30, support block; 31, operation hole; 32, locking rod; 33, locking groove; 34, first bevel gear; 35, second bevel gear; 36, third bearing; 38, anti-slip pad; 39, round hole; 40, mounting hole; 41, guide hole. DETAILED DESCRIPTION

[0036] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0037] Embodiment 1

[0038] Reference Figures 1-6 , a positioning and fixing device for installing a door frame of a civil air defense door, comprising:

[0039] The door frame 1 has positioning grooves 2 on all four sides;

[0040] Two side fixing plates 3 are located in the positioning groove 2 and are symmetrically arranged;

[0041] Two side adjustment mechanisms are installed on both sides of the door frame 1 and connected to the two side fixing plates 3 to adjust the positions of the two side fixing plates 3;

[0042] The top fixing plate 4 is located inside the positioning groove 2 at the top of the door frame 1. A plurality of plug rods 19 are fixedly installed on the top of the top fixing plate 4. The top of the plug rods 19 is set with a pointed head. Four guide rods 18 are fixedly installed on the bottom of the top fixing plate 4. Four guide holes 41 are opened on the top of the door frame 1. The four guide rods 18 are slidably connected to the inner walls of the four guide holes 41.

[0043] A top adjustment mechanism is installed on the top of the door frame 1 and connected to the top fixing plate 4 to adjust the position of the top fixing plate 4;

[0044] The linkage mechanism is located inside the positioning groove 2 and is connected with the top adjustment mechanism and the two side adjustment mechanisms to realize the linkage between the top adjustment mechanism and the two side adjustment mechanisms;

[0045] The protective shell 14 is welded to the inner side of the door frame 1 to form a sealed space with the door frame 1 and is used to protect the two side adjustment mechanisms, the top adjustment mechanism and the linkage mechanism.

[0046] Reference Figure 3 In this embodiment, the side adjustment mechanism includes an internal threaded cylinder 5, and circular holes 39 are provided on both sides of the door frame 1. The internal threaded cylinder 5 is rotatably connected to the circular hole 39 through a first bearing 8. An internal thread 6 is provided in the internal threaded cylinder 5, and a threaded rod 7 is connected to the internal thread of the internal threaded cylinder 5. The outer end of the threaded rod 7 is fixedly installed with the side fixing plate 3; the two internal threaded cylinders 5 drive the two threaded rods 7 to move outward, and the two threaded rods 7 push the two side fixing plates 3 to move outward and conflict with the inner wall of the mounting groove, and four sliding rods 13 are fixedly installed inside the side fixing plate 3, and four mounting holes 40 are provided on both sides of the door frame 1. A cylinder 12 is fixedly installed in the mounting hole 40, and the sliding rod 13 is slidably connected to the inner wall of the cylinder 12; the cooperation between the sliding rod 13 and the cylinder 12 can ensure the horizontal movement of the side fixing plate 3.

[0047] Reference Figure 5In this embodiment, the top adjustment mechanism includes a screw rod 21. A through hole 20 is opened at the top center position of the door frame 1. The screw rod 21 is rotatably connected to the through hole 20 through a second bearing 22. The top end of the screw rod 21 is fixedly installed with the bottom of the top fixing plate 4, and a crank structure is installed at the bottom end of the screw rod 21.

[0048] Reference Figure 5 In this embodiment, the crank structure includes a four-sided rod 25 and a rocking plate 28. A four-sided groove 23 is provided at the bottom end of the screw 21. The four-sided rod 25 is slidably connected to the inner wall of the four-sided groove 23. A rocking plate 28 is fixedly installed at the bottom end of the four-sided rod 25, and a rocking rod 29 is rotatably installed at the eccentric position of the rocking plate 28; the four-sided rod 25 is slidably connected to the four-sided groove 23. When rotating, the four-sided rod 25 can drive the screw 21 to rotate through the four-sided groove 23. A tension spring 24 is fixedly installed between the top of the four-sided rod 25 and the four-sided groove 23; the tension spring 24 provides a reset tension for the four-sided rod 25, and limiting grooves 26 are provided on both sides of the four-sided rod 25. Limiting blocks 27 are fixedly installed on the inner walls of both sides of the four-sided groove 23, and the two limiting blocks 27 are slidably connected to the inner walls of the two limiting grooves 26; it is ensured that the four-sided rod 25 will not leave the four-sided groove 23.

[0049] Reference Figure 5 In this embodiment, an operating hole 31 is opened at the center position of the top of the protective shell 14, and two support blocks 30 are fixedly installed on the inner wall of the operating hole 31. Locking rods 32 are fixedly installed at the bottom of the two support blocks 30. A plurality of locking grooves 33 are opened on the top of the rocking plate 28, and the plurality of locking grooves 33 are arranged in a ring shape. The two locking rods 32 cooperate with the two locking grooves 33; they are used to fix the rocking plate 28.

[0050] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 In this embodiment, the linkage mechanism includes two vertical rods 11 and two transverse rods 17. Four third bearings 36 are fixedly installed between the protective shell 14 and the door frame 1. The two vertical rods 11 and the two transverse rods 17 are fixedly installed with the inner rings of the four third bearings 36. The inner ends of the two transverse rods 17 are fixedly installed with first bevel gears 34. The outer side of the screw 21 is sleeved with a second bevel gear 35. The two first bevel gears 34 are meshed with the second bevel gear 35. The outer ends of the two transverse rods 17 are fixedly installed with second bevel gears 16. The top ends of the two vertical rods 11 are fixedly installed with first bevel gears 15. The first bevel gears 15 are meshed with the second bevel gears 16. The bottom ends of the two vertical rods 11 are fixedly installed with second linkage gears 10. The inner ends of the two internally threaded cylinders 5 are fixedly installed with first linkage gears 9. The two first linkage gears 9 are meshed with the two second linkage gears 10.

[0051] Working principle: when in use, a door hole is opened on the wall, and mounting grooves are reserved on the four sides of the door hole. The door frame 1 is installed in the mounting groove of the door hole, and then the rocker 29 is pulled to drive the rocking plate 28 to move, and the rocking plate 28 drives the four-side rod 25 to slide in the four-side groove 23, and the locking rod 32 leaves the corresponding locking groove 33 to release the fixation of the rocking plate 28. The rocking rocker 29 drives the four-side rod 25 to rotate through the rocking plate 28, and the four-side rod 25 drives the screw 21 to rotate through the four-side groove 23, and the screw 21 drives the top fixing plate 4 to move upward, and the top fixing plate 4 drives the insertion rod 19 to move upward and conflict with the inner wall of the mounting groove; the screw 21 drives the two transverse rods 1 through the second bevel gear 35 and the first bevel gear 34 7 rotates, the two horizontal rods 17 drive the two first bevel gears 15 to drive the two vertical rods 11 to rotate through the two second linking gears 10, the two vertical rods 11 drive the two first linking gears 9 to rotate through the two second linking gears 10, the two first linking gears 9 drive the two internally threaded cylinders 5 to rotate, the two internally threaded cylinders 5 drive the two threaded rods 7 to move outward, the two threaded rods 7 push the two side fixing plates 3 to move outward and conflict with the inner wall of the installation groove, so that the door frame can be fixed and can be installed on walls of different sizes. The rocking arm 29 is loosened, and the locking rod 32 is reinserted into the corresponding locking groove 33 through the tension of the tension spring 24 to fix the rocking plate 28.

[0052] Embodiment 2

[0053] The rest of the content of Example 2 is the same as that of Example 1, except that: anti-slip pads 38 are provided on the outer sides of the two side fixing plates 3, the anti-slip pads 38 are made of rubber, and anti-slip grooves are provided on the outer sides. This application includes all the structural shapes, sizes and materials of Example 1, and they can be selected and adjusted to meet specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0054] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A positioning and fixing device for installing a door frame of a civil air defense door, characterized in that: include: A door frame (1), wherein positioning grooves (2) are provided on four sides of the door frame (1); Two side fixing plates (3) are located in the positioning groove (2) and are symmetrically arranged; Two side adjustment mechanisms are installed on both sides of the door frame (1), connected to the two side fixing plates (3), and used to adjust the positions of the two side fixing plates (3); A top fixing plate (4) is located inside the positioning groove (2) at the top of the door frame (1); a plurality of plug rods (19) are fixedly installed on the top of the top fixing plate (4); the top of the plug rods (19) is provided with a pointed tip; four guide rods (18) are fixedly installed on the bottom of the top fixing plate (4); four guide holes (41) are opened at the top of the door frame (1); the four guide rods (18) are slidably connected to the inner walls of the four guide holes (41); A top adjustment mechanism, installed on the top of the door frame (1), connected to the top fixing plate (4), and used to adjust the position of the top fixing plate (4); A linkage mechanism is located inside the positioning groove (2) and is connected to the top adjustment mechanism and the two side adjustment mechanisms to achieve linkage between the top adjustment mechanism and the two side adjustment mechanisms; The protective shell (14) is welded to the inner side of the door frame (1) to form a sealed space with the door frame (1).

2. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 1, characterized in that: The side adjustment mechanism comprises an internal threaded tube (5), circular holes (39) are provided on both sides of the door frame (1), the internal threaded tube (5) is rotatably connected to the circular hole (39) via a first bearing (8), an internal thread (6) is provided inside the internal threaded tube (5), a threaded rod (7) is connected to the internal thread of the internal threaded tube (5), and the outer end of the threaded rod (7) is fixedly mounted to the side fixing plate (3).

3. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 1, characterized in that: Four sliding rods (13) are fixedly installed inside the side fixing plate (3), four mounting holes (40) are opened on both sides of the door frame (1), a cylinder (12) is fixedly installed inside the mounting hole (40), and the sliding rod (13) is slidably connected to the inner wall of the cylinder (12).

4. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 1, characterized in that: The top adjustment mechanism comprises a screw rod (21), a through hole (20) is provided at the top center position of the door frame (1), the screw rod (21) is rotatably connected to the through hole (20) via a second bearing (22), the top end of the screw rod (21) is fixedly mounted to the bottom of the top fixing plate (4), and a crank structure is installed at the bottom end of the screw rod (21).

5. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 4, characterized in that: The crank structure comprises a four-side rod (25) and a rocking plate (28); a four-side groove (23) is provided at the bottom end of the screw rod (21); the four-side rod (25) is slidably connected to the inner wall of the four-side groove (23); a rocking plate (28) is fixedly installed at the bottom end of the four-side rod (25); and a rocking rod (29) is rotatably installed at an eccentric position of the rocking plate (28).

6. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 5, characterized in that: A tension spring (24) is fixedly installed between the top end of the four-side rod (25) and the four-side groove (23).

7. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 5, characterized in that: Limiting grooves (26) are provided on both sides of the four-side rod (25), and limiting blocks (27) are fixedly installed on the inner walls of both sides of the four-side groove (23), and the two limiting blocks (27) are slidably connected to the inner walls of the two limiting grooves (26).

8. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 1, characterized in that: An operating hole (31) is provided at the center of the top of the protective shell (14); two support blocks (30) are fixedly mounted on the inner wall of the operating hole (31); locking rods (32) are fixedly mounted at the bottoms of the two support blocks (30); a plurality of locking grooves (33) are provided at the top of the rocking plate (28); the plurality of locking grooves (33) are arranged in a ring shape; and the two locking rods (32) cooperate with the two locking grooves (33).

9. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 1, characterized in that: The linkage mechanism comprises two vertical rods (11) and two transverse rods (17); four third bearings (36) are fixedly installed between the protective shell (14) and the door frame (1); and the two vertical rods (11) and the two transverse rods (17) are fixedly installed with the inner rings of the four third bearings (36).

10. A positioning and fixing device for installing a door frame of a civil air defense door according to claim 9, characterized in that: The inner ends of the two transverse rods (17) are fixedly mounted with a first bevel gear (34); the outer side of the screw rod (21) is sleeved with a second bevel gear (35); the two first bevel gears (34) are meshed with the second bevel gear (35); the outer ends of the two transverse rods (17) are fixedly mounted with a second bevel gear (16); the top ends of the two vertical rods (11) are fixedly mounted with a first bevel gear (15); the first bevel gear (15) is meshed with the second bevel gear (16); the bottom ends of the two vertical rods (11) are fixedly mounted with a second linkage gear (10); the inner ends of the two internally threaded cylinders (5) are fixedly mounted with a first linkage gear (9); the two first linkage gears (9) are meshed with the two second linkage gears (10).

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