Manual fine adjustment device for civil air defense door installation

Abstract

The utility model provides a manual fine adjustment device for civil air defense door installation, which is used in the technical field of building installation and comprises a base, a sliding mechanism, a bearing piece and a limiting mechanism, the base comprises a multi-layer detachable frame, and universal wheels are arranged at the bottom of the detachable frame; the sliding mechanism is arranged on the top surface of the base; comprising a center sliding rail and a sliding piece. The bearing piece is arranged at one end of the sliding piece and used for supporting the civil air defense door. The limiting mechanism is arranged at the other end of the sliding piece and comprises a limiting pin, a self-locking inserting piece and an elastic piece. According to the utility model, the sliding piece is manually moved to slide along the central sliding rail, so that the height of the door frame of the civil defense door is finely adjusted, the operation difficulty and the labor intensity are reduced, and the adjusting precision and the adjusting efficiency are improved; by arranging the limiting mechanism, the adjusting precision is easier to control, and the adjusting efficiency is improved; the device is simple in overall structure, easy to machine and manufacture, convenient to operate and good in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of building installation technology, and in particular relates to a manual fine-tuning device for installing air defense doors. Background Technology

[0002] Civil defense doors possess functions such as waterproofing, explosion-proofing, and resistance to air pollution. They can withstand external impacts and pollution to a certain extent, providing safe refuge for personnel. They are also an important safety protection measure for buildings in daily use, therefore, the installation quality of civil defense doors is particularly important. In stand-alone civil defense projects, steel structure double-leaf protective airtight doors with movable thresholds are usually used as civil defense doors. During installation, they need to be fixed to the foundation threshold and poured in one go. Current technology often uses tower cranes and other lifting equipment to hoist the civil defense door into place, and then manually uses pry bars and other tools to make fine adjustments to ensure its position is accurate. Although this method can ensure the installation accuracy of civil defense doors, it still has the following problems: First, due to the large weight of civil defense doors, hoisting them to the predetermined position with lifting equipment requires repeated adjustments. Multiple hoisting and moving operations are difficult, inefficient, and occupy a lot of construction space and lifting equipment usage time, which adversely affects the construction progress and cost. At the same time, the fine-tuning process requires a lot of manual labor, increasing the safety risks of construction and making it difficult to control the construction quality, affecting the overall safety of the building. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a manual fine-tuning device for installing air defense doors and its construction method, which reduces the operational difficulty and labor intensity of air defense door installation, and improves the adjustment accuracy and efficiency.

[0004] The technical solution adopted in this utility model is: a manual fine-tuning device for installing a civil defense door, comprising:

[0005] The base includes a multi-layer detachable frame, and the bottom of the detachable frame is provided with casters;

[0006] A sliding mechanism is disposed on the top surface of the base; the sliding mechanism includes a central slide rail and a sliding member slidably connected to the central slide rail;

[0007] A support member, located at one end of the sliding member, is used to support the air defense door;

[0008] A limiting mechanism is provided at the other end of the slider to restrict the movement of the slider.

[0009] Furthermore, the cross-section of the central slide rail is square, and the sliding element is sleeved on the central slide rail.

[0010] Furthermore, the slider is provided with sliding plates on opposite sides, and the two ends of the sliding plates protrude outward from the slider, and at least one end of the sliding plate is provided with a sliding handle.

[0011] Furthermore, the support member is perpendicular to the side wall of the slider, located above the sliding plate, and is positioned opposite to the sliding handle.

[0012] Furthermore, the central slide rail is provided with a plurality of adjustment holes; the sliding member is provided with a through hole; and the limiting mechanism includes a limiting pin that cooperates with the adjustment holes and the through hole.

[0013] Furthermore, the limiting mechanism also includes a self-locking plug and an elastic element; the self-locking plug is provided with a rod that cooperates with the adjusting hole and the through hole; one end of the self-locking plug is hinged to the end of the sliding plate near the sliding handle, and the other end is connected to the elastic element; the other end of the elastic element is connected to the end of the sliding plate near the support member.

[0014] Furthermore, the self-locking plug includes a pin, the two ends of which are connected to the sliding plate and located between the sliding frame and the sliding handle.

[0015] Furthermore, the self-locking plug also includes a longitudinal link and a transverse link, the transverse link being parallel to the pin; the longitudinal link being disposed between the pin and the transverse link; and the elastic elements being respectively connected to both ends of the transverse link.

[0016] Furthermore, the limiting pin is disposed on the same side as the self-locking plug and located above the self-locking plug.

[0017] The advantages and positive effects of this utility model are:

[0018] (1) The height of the door frame of the air defense door can be finely adjusted by manually moving the sliding piece along the central slide rail. Compared with using tools such as pry bars, this reduces the difficulty of operation and labor intensity, and improves the adjustment accuracy and efficiency.

[0019] (2) By setting a limit mechanism, the upper part of the sliding part is fixed and limited by the limit pin, and the sliding part is automatically limited during the adjustment process by the self-locking plug, which makes it easier to control the adjustment accuracy, and it is less likely to over-adjust or repeatedly adjust, thus improving the adjustment efficiency and also helping to improve the safety of the operation process.

[0020] (3) The device has a simple overall structure, is easy to process and manufacture, and is easy to operate. Multiple devices can work together to make fine adjustments to components with large self-weight. It is widely applicable to steel formwork, combined large formwork and steel component installation and has good practicality. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0022] Figure 2 This is a side view of a specific embodiment of the present invention.

[0023] In the picture:

[0024] 1. Base; 11. Casters; 2. Sliding mechanism; 21. Center slide rail; 211. Adjustment hole; 22. Sliding component; 221. Sliding plate; 222. Sliding handle; 223. Through hole; 3. Support component; 4. Limiting mechanism; 41. Limiting pin; 42. Self-locking insert; 421. Pin; 422. Longitudinal connecting rod; 423. Lateral connecting rod; 424. Insert rod; 43. Elastic component. Detailed Implementation

[0025] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0026] like Figures 1-2 As shown, this utility model proposes a manual fine-tuning device for installing air defense doors, including a base 1, a sliding mechanism 2, a support 3, and a limiting mechanism 4. Each part is described in detail below.

[0027] like Figures 1-2 As shown, in this embodiment, the base 1 includes a multi-layer detachable frame, and the bottom of the detachable frame is provided with casters 11, wherein the casters 11 are used to drive the base 1 to move and are equipped with a locking device, which can be fixed to the ground as needed; the detachable frame has several layers along the height direction, and the height of the base 1 can be reduced by removing at least one layer.

[0028] The sliding mechanism 2 is disposed on the top surface of the base 1; the sliding mechanism 2 includes a central slide rail 21 and a sliding member 22 slidably connected to the central slide rail 21; in this embodiment, the central slide rail 21 is arranged vertically, and the sliding member 22 can move up and down along the central slide rail 21.

[0029] The support member 3 is located at one end of the sliding member 22 and is used to support the door frame of the air defense door;

[0030] The limiting mechanism 4 is located at the other end of the slider 22 and is used to restrict the movement of the slider 22.

[0031] Normally, the door frame of a civil defense door is moved to the intended installation position by hoisting. Due to the limitations of the hoisting operation's precision, the position, height, and angle of the door frame deviate from the design requirements, thus requiring fine-tuning. When using this manual fine-tuning device, the specific process is as follows: After the door frame is hoisted into place, the support 3 is placed at the bottom of the door frame. The height of the door frame is adjusted by moving the sliding component 22 to meet the preset installation height requirements. The angle and position of the door frame are adjusted by moving the universal wheels 11 to precisely move it to the preset installation position and angle. When the bottom space of the door frame is less than the minimum height that the support 3 can reach, the height of the overall device is reduced by removing part of the detachable frame of the base 1 to facilitate fine-tuning of the door frame's height.

[0032] like Figure 1 As shown, in this embodiment, the cross-section of the central slide rail 21 is square, and the sliding member 22 is fitted onto the central slide rail 21. Preferably, the cross-section of the sliding member 22 is also square, and its shape is slightly larger than that of the central slide rail 21. This structural design can effectively reduce the friction between the sliding member 22 and the central slide rail 21, thereby making it easier for the sliding member 22 to move up and down on the central slide rail 21. Through the cooperation of the central slide rail 21 and the sliding member 22, the stability of the sliding member 22 during the sliding process is improved, ensuring that the sliding member 22 will not deviate during the movement. At the same time, the central slide rail 21 has a square cross-section, which is more stable than the traditional circular or irregular cross-section design and can provide stronger support capacity, thereby reducing the risk of deformation of the central slide rail 21 and the sliding member 22 under the load of the fire door frame and improving the safety of the device during use.

[0033] In this embodiment, the sliding member 22 is manually driven. To facilitate operation, sliding plates 221 are provided on opposite sides of the sliding member 22. The two ends of the sliding plates 221 protrude outward from the sliding member 22, and at least one end of the sliding plate 221 is equipped with a sliding handle 222. By setting the sliding handle 222, the height of the sliding member can be preliminarily adjusted conveniently before the fire door frame is installed. By setting the sliding plates 221, the operation of controlling the raising and lowering of the sliding member 22 after the fire door frame is placed on the support 3 is more convenient and comfortable. The operator can hold the two ends of the sliding plates 221 with their hands and push the sliding member 22 to move slowly along the vertical direction to the set height. The whole process is simple to operate, efficient, and less prone to operation errors, making it more suitable for scenarios that require precise manual height control. In this embodiment, several connecting rods are also provided between the two sliding plates 221, and the sliding handle 222 is connected to the outermost connecting rod to improve the integrity and stability of the structure.

[0034] In this embodiment, the support member 3 is vertically disposed on the side wall of the sliding member 22, above the sliding plate 221, and opposite to the sliding handle 222; so that the operator can manually drive the sliding member 22 to move. Preferably, the position of the support member 3 is at a set distance from the top of the sliding member 22, so that the support member 3 and the side wall of the sliding member 22 form an L-shaped structure, which together form support and limit the door frame of the air-raid shelter. In another preferred embodiment, the support member 3 is disposed at the top of the sliding member 22. When the sliding member 22 moves along the central slide rail 21 to the highest position of the adjustment range, the support member 3 is at a set distance from the top of the central slide rail 21, so that the support member 3 and the side wall of the central slide rail 21 form an L-shaped structure, which together form support and limit the door frame of the air-raid shelter, so as to prevent the door frame of the air-raid shelter from tilting and affecting the installation accuracy of the door frame of the air-raid shelter.

[0035] In this embodiment, the central slide rail 21 is provided with a plurality of adjustment holes 211, the sliding member 22 is provided with a through hole 223, and the limiting mechanism 4 includes a limiting pin 41 that cooperates with the adjustment holes 211 and the through hole 223. Specifically, adjustment holes 211 and through holes 223 are respectively provided on the corresponding side walls of the central slide rail 21 and the sliding member 22. The adjustment holes 211 are arranged linearly in the vertical direction. The side wall of the sliding member 22 is provided with a mounting seat for fixing the limiting pin 41. The mounting seat is provided with a threaded hole at the position opposite to the through hole 223. The limiting pin 41 is threaded into the threaded hole. By screwing the limiting pin 41, the limiting pin 41 can pass through the through hole 223 and the adjustment hole 211 in sequence, so that the sliding member 22 is fixed to the central slide rail 21. In this application, since the fire door frame is hoisted and positioned based on a set height, the deviation between the actual height of the fire door frame and the set height is very small. The spacing between the adjustment holes 211 in this application is set according to the deviation value under normal circumstances, so that after adjustment by the manual fine-tuning device in this application, the difference between the actual height of the fire door frame and the set height meets the error requirements.

[0036] In this embodiment, the limiting mechanism 4 further includes a self-locking plug 42 and an elastic element 43; the self-locking plug 42 is provided with a rod 424 that cooperates with the adjustment hole 211 and the through hole 223; one end of the self-locking plug 42 is hinged to one end of the sliding plate 221 near the sliding handle 222, and the other end is connected to the elastic element 43; the other end of the elastic element 43 is connected to one end of the sliding plate 221 near the support member 3. The working principle of this application is as follows: the elastic element 43 in this application is in a stretched state, and the end of the self-locking plug 42 connected to the elastic element 43 is always in contact with the sliding element 22 under the action of tension; in the initial state, the limiting pin 41 and the plug rod 424 are respectively inserted into different adjustment holes 211. When it is necessary to adjust the height of the sliding element 22, the limiting pin 41 is turned to move it away from the adjustment hole 211, and then the plug rod 424 is pulled out in the direction away from the sliding element 22, so that the self-locking plug 42 can slide up or down along the central slide rail 21; when the through hole 223 of the sliding element 22 and another adjustment hole 211 on the central slide rail 21 are connected again, the plug rod 424 automatically inserts under the action of tension. The slider 22 is prevented from sliding further when it enters the adjustment hole 211. Under normal circumstances, the adjustment amount required for height adjustment is small. The slider 22 only needs to move the distance of one adjustment hole 211 to meet the error requirement between the actual height and the set height of the fire door frame. When the required adjustment height value is large, the adjustment can be performed in multiple segments by alternately pulling out the plug rod 424, moving the slider 22, and automatically inserting the plug rod 424 into the adjustment hole 211 limit position. This makes it easier to control the adjustment accuracy, prevents over-adjustment and repeated adjustment, improves adjustment efficiency, and also helps to improve the safety of the operation process and the coordination of multiple manual fine-tuning devices working together.

[0037] In this embodiment, the self-locking plug 42 includes a pin 421, the two ends of which are connected to the sliding plate 221 and located between the sliding member 22 and the sliding handle 222; so that the self-locking plug 42 can rotate around the pin 421, thereby allowing the plug rod 424 to be inserted into or removed from the adjustment hole 211.

[0038] Furthermore, the self-locking plug 42 also includes a longitudinal connecting rod 422 and a transverse connecting rod 423. The transverse connecting rod 423 is arranged parallel to the pin 421, and the longitudinal connecting rod 422 is arranged between the pin 421 and the transverse connecting rod 423. Elastic elements 43 are respectively connected to both ends of the transverse connecting rod 423. Specifically, it is located between the sliding member 22 and the sliding handle 222. Specifically, one end of the longitudinal connecting rod 422 is vertically connected to the middle of the pin 421, and the other end is vertically connected to the middle of the transverse connecting rod 423. The length of the transverse connecting rod 423 matches the outer distance between the two sliding plates 221. Each end of the transverse connecting rod 423 is connected to an elastic element 43, and the other end of the elastic element 43 is connected to the outer side of the sliding plate 221. The insertion rod 424 can be arranged on the longitudinal connecting rod 422 or in the middle of the transverse connecting rod 423. The through hole 223 is arranged at a height position that matches the position of the sliding member 22 and the insertion rod 424.

[0039] In the application, the slider 22 is provided with at least two through holes 223, which correspond to the positions of the limiting pin 41 and the insertion rod 424 respectively; preferably, the through holes 223 are located on the same side wall of the slider 22, and the limiting pin 41 is provided on the same side as the self-locking plug 42 and located above the self-locking plug 42, respectively limiting the upper and lower parts of the slider 22, which can better achieve the limiting function, improve the safety of the device, and make it easier for the operator to operate manually.

[0040] This application embodiment also proposes a method for installing a civil defense door, which uses the aforementioned manual fine-tuning device for civil defense door installation to fine-tune the door frame, including the following steps:

[0041] S1. Hoist the fire door frame into place;

[0042] In one specific embodiment, the fire door frame adopts a steel structure with a movable threshold and double-leaf protective airtight door frame. Before hoisting, the fire door frame is inspected according to the design drawings. After the inspection is passed, upper and lower anchor hooks are welded on the fire door frame. A tower crane is used to hoist the fire door frame to the intended installation position. Due to the limitation of hoisting operation accuracy, there are slight deviations between the position and height of the hoisted fire door frame and the set position and height.

[0043] S2. Install the manual fine-tuning device on the air-raid shelter door and place it at the bottom of the fire door frame;

[0044] When there is insufficient space at the bottom of the fire door frame, remove part of the structure of the base 1 of the manual fine-tuning device for the fire door installation, so that the manual fine-tuning device for the fire door installation can enter the bottom of the fire door frame, so that the support 3 can form effective support for the fire door frame. Then disconnect the connection between the tower crane and the fire door frame. Depending on the weight and shape of the fire door frame, multiple manual fine-tuning devices for the fire door installation can be set at the bottom of the fire door frame to work together.

[0045] S3. Move the sliding handle 222 to adjust the height of the fire door frame;

[0046] Specifically, first, the set elevation and actual elevation of the air-raid shelter door frame are checked using a level instrument, and the difference between the two is calculated to determine the direction and distance of height adjustment, and then the number of adjustment holes 211 that the sliding member 22 needs to move is determined. When adjusting the height, first turn the limit pin 41 to disengage the limit pin 41 from the adjustment hole 211. Then, pull out the plug rod 424 and manually move the sliding member 22 up or down until the sliding member 22 slides past the calculated number of adjustment holes 211. Then, turn the limit pin 41 in the opposite direction to fix the sliding member 22 to the center slide rail 21.

[0047] S4. Adjust the position and angle of the fire door frame using the casters 11;

[0048] After the height of the fire door frame meets the set height requirements, the installation position of the fire door frame is checked using infrared light and a steel ruler. The manual fine-tuning device of the air defense door is moved by the casters 11 until the two sides of the air defense door frame are aligned with the infrared light, thus completing the adjustment of the installation position and angle of the air defense door.

[0049] S5. Install supporting steel bars to fix the fire door frame;

[0050] In one specific embodiment, a support rib is used as a temporary fixing device. The support rib is welded to the front and rear sides of the fire door frame. Preferably, the support rib forms a 60-degree angle with the fire door frame bracket, and the other end of the support rib is welded and fixed to the support frame.

[0051] S6. Remove the manual fine-tuning device from the air-raid shelter door;

[0052] By turning the limiting pin 41 and pulling out the insert rod 424, the sliding member 22 is moved downward to separate the support member 3 from the door frame of the air defense door. Then the air defense door is removed and the manual fine-tuning device is installed.

[0053] S7. Construction of the walls surrounding the fire door frames;

[0054] This includes tying the steel bars around the fire door frame, and after acceptance, installing and reinforcing the formwork and pouring concrete.

[0055] S8. Remove the supporting steel bars.

[0056] Remove the wall formwork and cut the supporting steel bars after the concrete has reached the design strength.

[0057] The manual fine-tuning device and installation method for installing air-raid shelter doors provided in this application have the following beneficial effects:

[0058] (1) The height of the door frame of the air defense door can be finely adjusted by manually moving the sliding piece along the central slide rail. Compared with using tools such as pry bars, this reduces the difficulty of operation and labor intensity, and improves the adjustment accuracy and efficiency.

[0059] (2) By setting a limit mechanism, the upper part of the sliding part is fixed and limited by the limit pin, and the sliding part is automatically limited during the adjustment process by the self-locking plug, which makes it easier to control the adjustment accuracy, and it is less likely to over-adjust or repeatedly adjust, thus improving the adjustment efficiency and also helping to improve the safety of the operation process.

[0060] (3) The device has a simple overall structure, is easy to process and manufacture, and is easy to operate. Multiple devices can work together to make fine adjustments to components with large self-weight. It is widely applicable to steel formwork, combined large formwork and steel component installation and has good practicality.

[0061] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A manual fine adjustment device for mounting a civil defense door, characterized in that, The utility model relates to a people's air defense door lifting device, including: Base, the base includes multilayer detachable frame, the bottom of detachable frame is equipped with universal wheel; Sliding mechanism, set up in the top surface of base, the sliding mechanism includes center slide rail and the sliding piece of sliding connection with center slide rail; Supporting piece, set up in one end of sliding piece, is used for supporting people's air defense door; Limiting mechanism, set up in the other end of sliding piece, is used for limiting sliding piece movement.

2. The manually adjustable fine tuning device for a civil air defense door as claimed in claim 1, wherein: The section of center slide rail is square, and the sliding piece is sleeved on the center slide rail.

3. The manually adjustable fine tuning device for a civil air defense door according to claim 1 or 2, characterized in that: The opposite sides of sliding piece are equipped with sliding plate, and the both ends of sliding plate project outward from the sliding piece, and at least one end of sliding plate is equipped with sliding handle.

4. The civil defense door mounting hand-tightening device according to claim 3, characterized in that: The supporting piece is perpendicular to the side wall of sliding piece and is located above the sliding plate and is opposite to the sliding handle.

5. The civil defense door mounting manual fine adjustment device of claim 4, wherein: The center slide rail is equipped with several adjusting holes, the sliding piece is equipped with through hole, and the limiting mechanism includes limiting pin matched with adjusting hole and through hole.

6. The civil defense door mounting hand-tightening device according to claim 5, characterized in that: The limiting mechanism further includes self-locking insert and elastic piece, the self-locking insert is equipped with plug rod matched with adjusting hole and through hole, one end of self-locking insert is hinged to one end of sliding plate close to sliding handle, the other end is connected to elastic piece, and the other end of elastic piece is connected to one end of sliding plate close to supporting piece.

7. The manually adjustable fine tuning device for a civil air defense door as claimed in claim 6, wherein: The self-locking insert includes pin shaft, and the both ends of pin shaft are connected to sliding plate and are located between sliding piece and sliding handle.

8. The civil defense door mounting hand-tightening device according to claim 7, characterized in that: The self-locking insert further includes longitudinal connecting rod and transverse connecting rod, the transverse connecting rod is parallel to pin shaft, the longitudinal connecting rod is arranged between pin shaft and transverse connecting rod, and elastic piece is connected to the both ends of transverse connecting rod respectively.

9. The manually adjustable device for mounting a security door according to any one of claims 6 to 8, wherein: The limiting pin is arranged on the same side of self-locking insert and is located above self-locking insert.

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