Primary and secondary back latticed connecting anti-drop device and formwork

Abstract

The utility model belongs to bridge construction technical field discloses a kind of primary and secondary back lath connection anti-drop device and formwork. Anti-drop device includes pressing plate, two limit rods and two locking parts. Two limit rods are spaced apart and arranged on the two sides of the primary back lath along the horizontal direction. The limit rod includes the first rod and the second rod, the first rod extends along the vertical direction, the second rod extends along the horizontal direction, and the end of the first rod away from the second rod is detachably connected to the secondary back lath. The pressing plate is abutted against the primary back lath, and is simultaneously sleeved on the second rod of the two limit rods. The two locking parts are one-to-one corresponding and sleeved on the two second rods, to press the pressing plate on the primary back lath. When the primary back lath needs to be fixed on the secondary back lath, the locking part is screwed, and the pressing plate is pressed on the primary back lath. When the relative position of the primary back lath and the secondary back lath needs to be adjusted, the locking part is reversed and screwed to release the position fixation between them, without frequent hole opening, simple operation, which can ensure the bearing capacity and structural stability of the formwork.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a primary and secondary back beam connection anti-detachment device and template. Background Technology

[0002] In bridge construction, cantilever formwork is commonly used to construct the cantilever structure of long-span bridges to support the pouring of concrete modules. In projects with high aesthetic requirements, a tie-bar-less system is often employed. In this system, the lateral pressure of the concrete is entirely borne by the formwork frame, and tie-bar holes are not installed on the formwork to reduce grout leakage and the appearance defects associated with repairing tie-bar holes. However, the backward movement distance of tie-bar-less cantilever formwork during demolding is limited, making it impossible to achieve the 30cm or larger demolding clearance required by conventional formwork. Therefore, after demolding, tie-bar-less cantilever formwork needs to be separated from the frame, lifted to the ground, cleaned, and coated with a release agent before reinstallation.

[0003] During frequent hoisting operations, the hooks between the main and secondary back ribs are prone to detachment. The conventional approach is to drill holes at the intersection of the secondary back rib channel steel flange plates and then fix them with bolts, or to weld the main and secondary back rib flange plates together. However, due to errors in controlling the concrete pouring elevation for each layer and the pre-embedded elevation of the formwork climbing cone, excessive cumulative errors can lead to the formwork's bottom surface being too large or too small. An excessively large edge will cause the bottom of the formwork to not be tightly sealed, resulting in grout leakage; an excessively small edge will cause excessive deformation at the bottom of the formwork, creating significant misalignment and posing a risk of concrete overflow from the bottom. In such cases, it is necessary to loosen the welded or bolted connections again, adjust the relative position of the secondary back rib on the main back rib, and perform secondary welding or drilling for fixation. Frequent drilling or welding can damage the flange plate structure, reduce the load-bearing capacity of the formwork system, and create structural safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a primary and secondary back rib connection anti-detachment device and template. The anti-detachment device facilitates the adjustment of the relative position of the secondary back rib on the primary back rib, and is simple and convenient to operate, which helps to improve construction efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On the one hand, a primary and secondary back rib connection anti-detachment device is provided, wherein the secondary back rib extends horizontally and is attached to the template body; the primary back rib extends vertically and abuts against the outer side of the secondary back rib;

[0007] include:

[0008] Two limiting rods are spaced apart on both sides of the main back rib along the horizontal direction; each limiting rod includes a first rod and a second rod that are bent and connected, the first rod extends vertically and the second rod extends horizontally, and the end of the first rod away from the second rod is detachably connected to the secondary back rib.

[0009] The pressure plate abuts against the side of the main back rib that is away from the secondary back rib, and is simultaneously sleeved on the two second rods;

[0010] Two locking elements are fitted onto the two second rods in a corresponding manner, and the two locking elements can press the pressure plate tightly against the main back rib.

[0011] As an optional solution for the anti-detachment device connecting the primary and secondary back ribs, each of the first rods is fitted with a fixing member, which abuts against the secondary back rib to detachably lock the first rod to the secondary back rib.

[0012] As an optional solution for the anti-detachment device connecting the primary and secondary back ribs, the secondary back rib is provided with a fixing hole, which is used to allow the first rod to pass through.

[0013] As an optional solution for the anti-detachment device connecting the primary and secondary back ribs, the fixing hole is a waist-shaped hole.

[0014] As an optional solution for the anti-detachment device connecting the primary and secondary back ribs, a first gasket is also fitted on the first rod, and the first gasket abuts against the fixing member and the secondary back rib.

[0015] As an optional solution for the anti-detachment device connecting the primary and secondary back braces, the pressure plate has two through holes spaced apart, and the two second rods are inserted into the two through holes in a one-to-one correspondence.

[0016] As an optional solution for the anti-detachment device connecting the primary and secondary back ribs, the through hole is a waist-shaped hole.

[0017] On the other hand, a template is provided, including:

[0018] Template body;

[0019] Multiple secondary back ribs are arranged at intervals along the vertical direction on the template body;

[0020] Multiple main back ribs are arranged at intervals along the horizontal direction on multiple secondary back ribs;

[0021] The above-mentioned primary and secondary back ribs are connected by an anti-detachment device, and each of the intersections of the secondary back ribs and the primary back ribs is provided with an anti-detachment device.

[0022] As an optional solution for the template, the template also includes multiple fine-tuning devices, each of which corresponds one-to-one with one of the main and secondary back rib connection anti-detachment devices;

[0023] The fine-tuning device includes a fixed base, a driving mechanism, and a top support. The fixed base is disposed on the main back rib, the driving mechanism is disposed on the fixed base, and the top support is movably disposed on the fixed base in the vertical direction and connected to the output end of the driving mechanism. The upper end of the top support abuts against the secondary back rib.

[0024] As an optional solution for the template, the fixed base has a connecting hole, through which the top support is threaded and screwed into the connecting hole.

[0025] The beneficial effects of this utility model are:

[0026] This utility model provides a primary and secondary back rib connection anti-detachment device and template. When the primary back rib needs to be fixed to the secondary back rib, simply tighten the locking piece to press the pressure plate onto the primary back rib. When it is necessary to adjust the relative position of the primary and secondary back ribs, simply tighten the locking piece in the opposite direction to release the position fixation between them. This eliminates the need for frequent drilling, making the operation simple and convenient, and ensuring the load-bearing capacity and structural stability of the template. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the template provided in a specific embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the main and secondary back rib connection anti-detachment device provided in the specific embodiment of this utility model, applied at the connection between the main back rib and the secondary back rib.

[0029] Figure 3 This is a schematic diagram of the structure of the primary and secondary back rib connection anti-detachment device provided in the specific embodiments of this utility model;

[0030] Figure 4 This is a side view of the main and secondary back rib connection anti-detachment device provided in the specific embodiment of this utility model applied at the connection between the main back rib and the secondary back rib.

[0031] Figure 5 This is a schematic diagram of the structure when the limiting rod and the secondary back rib are set at an angle according to a specific embodiment of this utility model;

[0032] Figure 6 This is a top view of the limiting rod and the secondary back rib provided in the specific embodiment of this utility model.

[0033] Figure 7This is a schematic diagram of the first process in the template construction process provided in the specific embodiments of this utility model;

[0034] Figure 8 yes Figure 7 A magnified view of a section at point A in the middle;

[0035] Figure 9 This is a schematic diagram of the second process in the template construction process provided in the specific embodiments of this utility model;

[0036] Figure 10 This is a schematic diagram of the third process in the template construction process provided in the specific embodiments of this utility model;

[0037] Figure 11 yes Figure 10 A magnified view of a section at point B in the middle;

[0038] Figure 12 yes Figure 10 A magnified view of a section at point C;

[0039] Figure 13 This is a schematic diagram of the fourth process in the template construction process provided in the specific embodiments of this utility model;

[0040] Figure 14 This is a schematic diagram of the fifth process in the template construction process provided in the specific embodiments of this utility model;

[0041] Figure 15 This is a schematic diagram of the sixth process in the template construction process provided in the specific embodiments of this utility model;

[0042] Figure 16 This is a schematic diagram of the seventh process in the template construction process provided in the specific embodiments of this utility model.

[0043] In the picture:

[0044] 100. Secondary back rib; 101. Fixing hole;

[0045] 200. Template body;

[0046] 300. Main back support; 301. Lifting unit;

[0047] 400. Fine-tuning device; 401. Fixed base; 402. Top support;

[0048] 500. Template frame; 501. Main platform; 502. Moving device; 503. Support rod;

[0049] 600, Layer to be constructed;

[0050] 1. Limiting rod; 11. First rod; 12. Second rod;

[0051] 2. Pressure plate; 21. Through hole; 3. Locking component; 4. Fixing component; 5. First washer; 6. Second washer. Detailed Implementation

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0053] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0056] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0057] like Figures 1 to 6As shown, this embodiment provides a primary and secondary back rib connection anti-detachment device. The secondary back rib 100 extends horizontally and is attached to the template body 200, while the primary back rib 300 extends vertically and abuts against the outer side of the secondary back rib 100. The secondary back rib 100 includes two C-shaped plates, the webs of which are welded and fixed by multiple connecting columns, and the gap distance x between the two C-shaped plates is [missing information].

[0058] The anti-detachment device includes a pressure plate 2, two limiting rods 1, and two locking elements 3. The two limiting rods 1 are horizontally spaced on both sides of the main back rib 300. Each limiting rod 1 includes a bent first rod 11 and a second rod 12 connected together. The first rod 11 extends vertically, and the second rod 12 extends horizontally. The end of the first rod 11 away from the second rod 12 is detachably connected to the secondary back rib 100. The pressure plate 2 abuts against the side of the main back rib 300 opposite to the secondary back rib 100 and is simultaneously fitted onto the second rod 12 of the two limiting rods 1. The two locking elements 3 are correspondingly fitted onto the two second rods 12 to press the pressure plate 2 firmly against the main back rib 300. When it is necessary to fix the main back rib 300 to the secondary back rib 100, simply tighten the locking elements 3 to press the pressure plate 2 firmly onto the main back rib 300. When it is necessary to adjust the relative position of the main back rib 300 and the secondary back rib 100, the locking part 3 can be turned in the opposite direction to release the position fixation between the two. There is no need to frequently open holes. The operation is simple and convenient, and it can ensure the load-bearing capacity and structural stability of the template.

[0059] Specifically, the outer wall of the second rod 12 is provided with threads, and the locking part 3 is a nut. The locking part 3 is screwed onto the second rod 12, which provides a stable connection, is simple and convenient to operate, and is also economical.

[0060] More specifically, the limiting rod 1 is made of bent round steel. The length of the first rod 11 can be selected according to the arrangement of the fixing holes 101 of the secondary back rib 100. Usually, the length of the first rod 11 is controlled at about 5cm. Figure 4 The L3 shown is 5cm long, and the first rod 11 is too long to pass through the gap of the secondary back rib 100. The second rod 12 includes a smooth rod part and a threaded part. The length of the smooth rod part is L2, that is, the length from the center of the fixing hole 101 to the outer edge of the main back rib 300 is L2, and the length of the threaded part is L1. Therefore, the length of the limiting rod 1 is L1+L2+L3.

[0061] In this embodiment, the first rod 11 is connected to the upper C-shaped steel; in other embodiments, the first rod 11 may also be connected to the lower C-shaped steel. When used in actual construction sites, the appropriate method can be chosen based on whether installation is restricted and the ease of installation, but it is best to avoid fixing it in one direction and to stagger the upper and lower layers to improve the connection strength and stability of the formwork.

[0062] Optionally, each first rod 11 is fitted with a fixing member 4, which abuts against the secondary back rib 100 to detachably lock the first rod 11 to the secondary back rib 100. Specifically, the outer peripheral wall of the first rod 11 is provided with threads, and the fixing member 4 is a nut commonly used in the art. By tightening the fixing member 4, the first rod 11 and the secondary back rib 100 can be detachably connected, which is convenient to assemble, has high stability, and helps to reduce construction costs.

[0063] Furthermore, a fixing hole 101 is provided on the secondary back rib 100. The fixing hole 101 is used to allow the first rod 11 to pass through, which can provide the first rod 11 with axial freedom and simplify assembly and maintenance.

[0064] Furthermore, the fixing hole 101 is an oblong hole. On the one hand, this facilitates the adjustment of the connection position between the first rod 11 and the secondary back rib 100 to accommodate fixing main back ribs 300 of different sizes; on the other hand, when the size of the first rod 11 is slightly larger than the gap x of the secondary back rib 100, the first rod 11 can be first horizontally inserted into the fixing hole 101, and then the limiting rod 1 can be rotated to place the first rod 11 into the fixing hole 101. In addition, under normal circumstances, after the first rod 11 and the secondary back rib 100 are connected and fixed, they do not need to be disassembled in subsequent formwork installation and dismantling operations. Only by tightening the locking part 3, moving the main back rib 300, and adjusting the relative position of the main back rib 300 and the secondary back rib 100 can the size of the concrete covering the formwork be adjusted.

[0065] Optionally, a first washer 5 is also fitted onto the first rod 11, and the first washer 5 abuts against the fixing member 4 and the secondary back rib 100. By setting the first washer 5, the contact area between the fixing member 4 and the secondary back rib 100 can be increased, avoiding excessive local stress and ensuring reliable and durable connection.

[0066] Optionally, a second washer 6 is fitted on the second rod 12. The second washer 6 abuts between the pressure plate 2 and the locking member 3. By setting the second washer 6, the contact area between the locking member 3 and the pressure plate 2 can be increased, avoiding excessive local stress and ensuring a stable and reliable connection.

[0067] Optionally, the pressure plate 2 has two through holes 21 spaced apart, and the two second rods 12 are inserted into the two through holes 21 in a corresponding manner for easy installation. Specifically, the pressure plate 2 is made of steel plate with a thickness of not less than 1 cm. The two through holes 21 are symmetrically arranged on the pressure plate 2, and the distance between the edge of each through hole 21 and the edge of the pressure plate 2 is not less than 3 cm, so as to avoid tearing or cracking of the edge of the pressure plate 2 and ensure the overall rigidity of the pressure plate 2. In addition, the minimum distance between the two through holes 21 is the maximum width of the main back rib 300, so as to ensure that the two limiting rods 1 can be clamped on both sides of the main back rib 300.

[0068] Furthermore, the through hole 21 is an oblong hole with its major axis in the horizontal direction, which allows the second rod 12 to move and adjust in the horizontal direction, facilitating assembly and disassembly.

[0069] Specifically, before installation and use, the anti-detachment device requires determining the lengths of the first rod 11 and the second rod 12 based on the position of the fixing hole 101 on the secondary back rib 100, the dimensions of the main back rib 300, and any surrounding conflicts. If the second rod 12 has no fixing hole 101 at a position perpendicular to the secondary back rib 100, or if the fixing hole 101 is misaligned and cannot be passed through, the second rod 12 can also be fixed at a certain angle to the secondary back rib 100. Figure 5 and Figure 6 The center distance B1 between the ends of the two first rods 11 may not be equal to the center distance B2 between the outer ends of the two second rods 12, as long as the locking member 3 can press the pressure plate 2 tightly onto the main back rib 300. For example, B1 is greater than B2; in other embodiments, B1 may also be less than B2.

[0070] In addition, this embodiment also provides a template, which includes a template body 200, a plurality of secondary back ribs 100, a plurality of main back ribs 300, and a plurality of the aforementioned main and secondary back rib connecting anti-detachment devices. The plurality of secondary back ribs 100 are arranged vertically at intervals on the template body 200, and the plurality of main back ribs 300 are arranged horizontally at intervals on the plurality of secondary back ribs 100. Each intersection of a secondary back rib 100 and a main back rib 300 is provided with a main and secondary back rib connecting anti-detachment device. This template is simple and convenient to assemble, and has all the beneficial effects of the aforementioned main and secondary back rib connecting anti-detachment devices, which will not be elaborated here.

[0071] Furthermore, the template also includes multiple fine-tuning devices 400, each corresponding to a primary and secondary back rib anti-detachment device. Each fine-tuning device 400 includes a fixed base 401, a drive mechanism, and a top support 402. The fixed base 401 is located on the primary back rib 300, the drive mechanism is located on the fixed base 401, and the top support 402 is movably mounted vertically on the fixed base 401 and connected to the output end of the drive mechanism. The upper end of the top support 402 abuts against the secondary back rib 100. When the bottom of the template body 200 is at the same height as the concrete pouring layer, i.e.... Figure 11 When the height h of the template body 200 does not meet the requirements, first tighten the locking piece 3 to loosen the contact between the main back rib 300 and the secondary back rib 100. Then, allow the top support piece 402 to move up or down under the drive of the drive mechanism to achieve the upward or downward movement of the template body 200. After adjustment, tighten the locking piece 3 again to fix the relative position of the main back rib 300 and the secondary back rib 100. The operation is simple and convenient, and it can ensure the overall stability and connection strength of the template. For example, the drive mechanism is a drive motor commonly used in this field.

[0072] Furthermore, a connecting hole is provided on the fixed base 401, through which the top support 402 passes and is threaded into the connecting hole. That is, driven by the drive mechanism, the top support 402 rotates around its own axis. Combined with the threaded engagement between the top support 402 and the connecting hole, the top support 402 can move vertically, thereby supporting the vertical movement of the secondary back rib 100 and the template body 200. This configuration is simple and compact, allows for precise displacement control, and has self-locking properties, ensuring the stability and safety of the template body 200 without the need for an additional braking device. For example, the top support 402 is a threaded rod.

[0073] For example, combined Figures 7 to 16 The usage process of formwork on the construction site is as follows:

[0074] First, assemble the template, referring to... Figure 7 and Figure 8 Multiple secondary back ribs 100 are fixed vertically at intervals to the template body 200, and multiple main back ribs 300 are abutted horizontally at intervals to the multiple secondary back ribs 100. An anti-detachment device is installed at the intersection of each main back rib 300 and secondary back rib 100, preferably staggered between upper and lower layers. The locking parts 3 of each anti-detachment device are tightened to ensure that the pressure plate 2 is stably abutted against the main back rib 300 before hoisting.

[0075] Specifically, such as Figure 7 As shown, each main back rib 300 is equipped with a hoisting part 301 at its upper end, and external hoisting equipment is hooked onto the hoisting part 301 to facilitate the hoisting of the template.

[0076] Reference Figure 9 and Figure 10 The formwork is hoisted to the main construction platform 501. First, the main back rib 300 is fixed to the moving device 502. Then, the support rod 503 on the main platform 501 is rotated to connect and fix the support rod 503 to the main back rib 300, so that the formwork is in a self-stable and balanced state. Then, the connection between the hoisting part 301 and the external hoisting equipment is released.

[0077] Specifically, the main platform 501 is mounted on the formwork frame 500, which is anchored to the building structure to ensure stability. The moving device 502 is movably mounted on the main platform 501 to move the formwork closer to or further away from the layer 600 to be constructed. The support rod 503 is rotatably mounted on the main platform 501 to support and fix the formwork. The formwork frame 500, main platform 501, moving device 502, and support rod 503 are all devices already disclosed in the prior art; their specific structures and principles are described in detail here. For example, the support rod 503 is connected and fixed to the main back rib 300 via a limiting pin.

[0078] Measure the vertical distance between the bottom opening of the formwork body 200mm and the concrete pouring layer, i.e., the lower cover height h of the formwork body 200mm (refer to...). Figure 11 Generally, the width should be controlled within the range of 5cm-10cm. (Combined with...) Figure 12 When the height of the package is too large, the drive mechanism drives the top support 402 to move upward, causing the template body 200 to move upward; when the height of the package is too small, the drive mechanism drives the top support 402 to move downward, causing the template body 200 to move downward.

[0079] like Figure 13 As shown, after the lower mound height is adjusted to the set value, the moving device 502 drives the formwork to move towards the layer 600 to be constructed, and pours concrete. (Refer to...) Figure 14 Once the concrete strength meets the demolding requirements, the formwork is moved away from the main building by the moving device 502 to complete the demolding.

[0080] Check the tightness of each locking component to ensure that locking component 3 is firmly pressed against pressure plate 2. Figure 15 As shown, the external hoisting equipment is hooked onto the hoisting part 301, the connection between the support rod 503 and the main back rib 300 and the connection between the main back rib 300 and the moving device 502 is released, the support rod 503 is rotated in the direction away from the formwork frame, and finally the formwork is hoisted to the ground for cleaning.

[0081] like Figure 16 As shown, the formwork frame 500 and the main platform 501 are raised to facilitate subsequent construction.

[0082] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A primary and secondary back rib connection anti-detachment device, wherein the secondary back rib (100) extends horizontally and is attached to the template body (200); the primary back rib (300) extends vertically and abuts against the outer side of the secondary back rib (100); Its features are, include: Two limiting rods (1) are spaced apart on both sides of the main back rib (300) along the horizontal direction; each limiting rod (1) includes a first rod (11) and a second rod (12) that are bent and connected, the first rod (11) extends vertically and the second rod (12) extends horizontally, and the end of the first rod (11) away from the second rod (12) is detachably connected to the secondary back rib (100); The pressure plate (2) abuts against the side of the main back rib (300) away from the secondary back rib (100) and is simultaneously sleeved on the two second rods (12); Two locking pieces (3) are fitted onto the two second rods (12) in a corresponding manner. The two locking pieces (3) can press the pressure plate (2) against the main back rib (300).

2. The anti-detachment device for the main and secondary back rib connection according to claim 1, characterized in that, Each of the first rods (11) is fitted with a fastener (4), which abuts against the secondary back rib (100) to detachably lock the first rod (11) to the secondary back rib (100).

3. The anti-detachment device for the main and secondary back rib connection according to claim 2, characterized in that, The secondary back rib (100) is provided with a fixing hole (101) for allowing the first rod (11) to pass through.

4. The anti-detachment device for the main and secondary back rib connection according to claim 3, characterized in that, The fixing hole (101) is a waist-shaped hole.

5. The anti-detachment device for the main and secondary back rib connection according to claim 2, characterized in that, The first rod (11) is also fitted with a first washer (5), which abuts against the fixing member (4) and the secondary back rib (100).

6. The anti-detachment device for the main and secondary back rib connection according to claim 1, characterized in that, The pressure plate (2) has two through holes (21) spaced apart, and the two second rods (12) are inserted into the two through holes (21) in a corresponding manner.

7. The anti-detachment device for the main and secondary back rib connection according to claim 6, characterized in that, The through hole (21) is a waist-shaped hole.

8. A template, characterized in that, include: Template body (200); Multiple secondary back ribs (100) are arranged at intervals along the vertical direction on the template body (200); Multiple main back ribs (300) are arranged at intervals along the horizontal direction on multiple secondary back ribs (100); Multiple primary and secondary back rib connection anti-detachment devices as described in any one of claims 1-7, wherein each of the secondary back ribs (100) and the primary back ribs (300) is provided with one of the primary and secondary back rib connection anti-detachment devices.

9. The template according to claim 8, characterized in that, The template also includes multiple fine-tuning devices (400), and each of the multiple fine-tuning devices (400) corresponds one-to-one with the multiple primary and secondary back bracing connection anti-detachment devices; The fine-tuning device (400) includes a fixed base (401), a driving mechanism, and a top support (402). The fixed base (401) is disposed on the main back rib (300), the driving mechanism is disposed on the fixed base (401), and the top support (402) is movably disposed on the fixed base (401) in the vertical direction and connected to the output end of the driving mechanism. The upper end of the top support (402) abuts against the secondary back rib (100).

10. The template according to claim 9, characterized in that, The fixed base (401) has a connecting hole, and the top support (402) passes through and is screwed into the connecting hole.

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