Template installation verticality detection device

Abstract

The utility model provides a template installation verticality detection device. The template installation verticality detection device comprises a first cross rod, a hook arranged on the first cross rod, a telescopic vertical rod part vertically connected with the first cross rod, a second cross rod vertically connected with the vertical rod part, a lifting rope connected with the first cross rod, and a drop hammer connected with the lifting rope. According to the utility model, the length of the vertical rod part is adjusted to lift the hook to a preset height and hang the steel pipe outside the template, the second cross rod is set to be in a matched length and is fixed on the outer side of the template in an abutting manner, so that the vertical rod part is parallel to the template, and the installation verticality of the template can be detected only by measuring the horizontal distance from the drop hammer to the vertical rod part. The template verticality detection device has the beneficial effects that high-position positioning can be carried out without climbing of a person, detection of template verticality can be rapidly and accurately completed by one person, the construction safety is high, the detection efficiency and the detection quality are high, and the labor cost can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a device for detecting the verticality of formwork installation. Background Art

[0002] In the existing technology, the verticality of vertical formwork installation directly affects the quality of concrete forming. The general method for on-site formwork inspection is to measure with a box ruler. However, in the actual detection process, due to complex construction environments and large acceptance workloads, it is easy for personnel to have measurement errors, affecting the detection accuracy. In actual construction, to ensure construction quality, vertical multi-point detection is required. Existing auxiliary detection devices cannot be effectively fixed outside the formwork, making it inconvenient to position at high altitudes. Personnel need to repeatedly climb heights for operations, posing safety hazards. Moreover, multiple people are required to cooperate, resulting in low detection efficiency, high labor costs, and the detection process is prone to deviation, affecting the detection results. There are technical problems such as inconvenient high-altitude positioning, safety hazards in personnel repeatedly climbing heights during construction, low detection efficiency, inability to be independently completed by one person, easy generation of detection errors, and thus affecting the detection quality. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a device for detecting the verticality of formwork installation, which is especially suitable for one person to independently detect the verticality of formwork installation, without the need to climb heights, and has high detection efficiency and detection quality.

[0004] The technical solution adopted by the utility model is: a device for detecting the verticality of formwork installation, including a first positioning component, which includes a first cross bar and a hook that can be hung on any steel pipe outside the formwork, and the hook is connected to the first cross bar; a vertical bar component, which is perpendicularly connected to the first cross bar, and the vertical bar component is telescopic to lift the hook to a predetermined height; a second positioning component, which includes a second cross bar perpendicularly connected to the vertical bar component. When the hook is hung on the corresponding steel pipe, the second cross bar can be abutted against the outside of the formwork to adjust the parallelism between the vertical bar component and the formwork; a measuring component, which includes a suspension rope connected to the first cross bar and a plumb bob connected to the end of the suspension rope.

[0005] Further, the second cross bar is telescopic to adjust the length.

[0006] Further, the second cross bar is movably connected to the vertical bar component to move along the direction parallel and / or perpendicular to the length direction of the vertical bar component.

[0007] Further, a scale line for detection is provided on the surface of the second cross bar.

[0008] Further, the measuring component further includes a spool rotatably connected to the vertical bar component and a suspension rope positioning member connected to the first cross bar for laying the suspension rope, and the end of the suspension rope far from the plumb bob is wound around the spool.

[0009] Further, the vertical rod member includes a plurality of sleeves that are slidably connected to each other and nested step by step from the inside out. Each lower-level sleeve is sleeved inside its upper-level sleeve. At least one elastic clamping member is provided on the sleeve arranged on the inner layer, and a positioning hole adapted to the elastic clamping member is formed on its upper-level sleeve.

[0010] Further, the sleeve arranged on the innermost layer is connected to the second cross bar, and the sleeve arranged on the outermost layer is connected to the first cross bar.

[0011] The advantages and positive effects of the present utility model are as follows: Due to the adoption of the above technical solution, there is no need for personnel to work at heights, and one person can quickly and accurately complete the detection of the verticality of formwork installation; it has the advantages of simple structure, low processing cost, high construction safety, high detection efficiency and detection quality, and can save labor costs. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0013] Figure 2 is for easy understanding Figure 1 the sectional structural diagram of the connection relationship at A in and the structural diagrams of each component after the vertical rod member is disassembled;

[0014] Figure 3 is a schematic diagram of the usage scenario of an embodiment of the present utility model when the formwork is installed vertically;

[0015] Figure 4 is a schematic structural diagram of another embodiment of the present utility model;

[0016] Figure 5 is a schematic diagram of the usage scenario of another embodiment of the present utility model when the formwork is not installed vertically.

[0017] In the figure:

[0018] 1. First cross bar 2. Hook 3. Second cross bar

[0019] 4. Suspension rope 5. Plumb bob 7. Formwork

[0020] 8. Square timber 9. Steel pipe 31. Connecting pipe

[0021] 32. Fixing component 33. Sliding sleeve 41. Spool

[0022] 42. Suspension rope positioning member 43. Limit ring 61. Outer sleeve

[0023] 62. Inner sleeve 63. Elastic clamping member 64. Positioning hole

[0024] a1. Control distance a2. Standard distance b1. Adjustment distance

[0025] b2. Detection distance Detailed implementation manners

[0026] The embodiments of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar units or units with the same or similar functions throughout.

[0028] The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model. In the description of the present utility model, it should be understood that terms such as "installation", "connection", "fixation" should be understood in a broad sense, which can be direct connection, installation or fixation, or indirect connection, installation or fixation. The present utility model does not limit this.

[0029] In the description of the present utility model, it should be understood that terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure or unit referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] As Figures 1 to 3 , a schematic diagram of an embodiment of a template installation perpendicularity detection device of the present utility model includes a first positioning member, which includes a first cross bar 1 and a hook 2 that can be hung on any steel pipe 9 outside the template 7. The hook 2 is connected to the first cross bar 1. In conventional construction, square timbers 8 are installed at intervals outside the template 7 and steel pipes 9 are tied outside the square timbers 8 for reinforcement; a vertical bar member, which is perpendicularly connected to the first cross bar 1, and the vertical bar member is telescopic to lift the hook 2 to a predetermined height and hang it on the steel pipe 9; a second positioning member, which includes a second cross bar 3 that is perpendicularly connected to the vertical bar member. When the hook 2 is hung on the corresponding steel pipe 9, the second cross bar 3 can be abutted against the outside of the template 7 to adjust the parallelism between the vertical bar member and the template 7; a measuring member, which includes a suspension rope 4 connected to the first cross bar 1 and a plumb bob 5 connected to the end of the suspension rope 4. In this embodiment, the second cross bar 3 can be inserted between adjacent steel pipes 9 and can also be inserted into the interval between the corresponding adjacent square timbers 8, and the second cross bar 3 can be abutted against the outer side wall of the template 7.

[0031] The length of the second crossbar 3 needs to be fixed in advance according to the fastening position of the second crossbar 3 and the dimensions of the construction materials before detecting the perpendicularity. When the perpendicularity is detected, the vertical rod component can be parallel to the formwork 7. In this embodiment, the distance from the intersection of the first crossbar 1 and the vertical rod component to the center of the hook 2 is a known distance. When the hook 2 is hung on the steel pipe 9 to detect the perpendicularity of the formwork 7, the distance from the center of the hook 2 to the formwork 7 is the compensation distance, and the compensation distance can be calculated according to the known dimensions of the construction materials. That is, in this embodiment, the compensation distance is the sum of half of the outer diameter of the steel pipe 9 and the thickness of the square timber 8. The sum of the known distance and the compensation distance is the reference distance a1, and the distance from the end of the second crossbar 3 close to the formwork 7 to the vertical rod component is the adjustment distance b1, and the adjustment distance b1 is equal to the reference distance a1. When the hook 2 is hung on the corresponding steel pipe 9, the distance from the intersection of the plumb bob 5 and the first crossbar 3 in the vertical direction to the vertical rod component is the standard distance a2, and the horizontal distance from the plumb bob 5 to the vertical rod component is the detection distance b2. The perpendicularity of the installation of the formwork 7 is detected by the difference between the detection distance b2 and the standard distance a2. In other embodiments, the second crossbar 3 can also be used to abut against the square timber 8. When the second crossbar 3 abuts against the square timber 8 for fixation, the compensation distance is the distance from the center of the steel pipe 9 to the square timber 8, usually half of the outer diameter of the steel pipe 9. Thus, those skilled in the art can know that the length of the second crossbar 3 is adjusted accordingly according to the fastening position of the second crossbar 3 and the dimensions of the construction components, so as to satisfy that when the perpendicularity is detected, the vertical rod component can be used as the reference line after the formwork 7 is translated. Only by measuring the detection distance b2 can it be determined whether the perpendicularity of the installation of the formwork 7 meets the construction standards, which can reduce the measurement workload in the detection process, improve the detection efficiency, and prevent the influence of measurement errors caused by multiple measurements of personnel on the detection quality; in this embodiment, by inserting the second crossbar 3 into the interval of the square timber 8, the device of the present utility model can be better fixed, the fixing stability can be improved, and construction accidents or personal injuries caused by the fall of the measuring device can be prevented; through the fixing method of matching the hook 2 with the second crossbar 3, there is no need to add personnel for fixing the detection device, and one person can complete the detection work, reducing the detection labor cost; the present utility model can adjust the length of the vertical rod component, hang the hook 2 at a predetermined height, avoid repeated high-altitude operations of personnel, avoid potential hazards of high-altitude operations, and improve the detection safety.

[0032] It should be noted that the length of the second crossbar 3 needs to be fixed in advance according to the fixed position and the dimensions of the construction materials before the perpendicularity detection.

[0033] The usage method of the present utility model includes the following usage steps:

[0034] Adjust the length of the vertical rod component to lift the hook 2 to a predetermined height, hang the hook 2 on the corresponding steel pipe 9, insert the second cross bar 3 into the space between adjacent steel pipes 9 to abut against the outer wall of the formwork 7, thereby stabilizing the utility model device hung outside the formwork 7. When the second cross bar 3 abuts against the outside of the formwork 7, the vertical rod component is parallel to the formwork 7, and the vertical rod component can be used as a reference line after the formwork 7 is translated. The distance from the intersection of the plumb bob 5 and the first cross bar 1 in the vertical direction to the vertical rod component is the standard distance a2, and the standard distance a2 can be determined after the installation of the utility model device. The horizontal distance from the plumb bob 5 to the vertical rod component is the detection distance b2. The perpendicularity of the formwork 7 installation is detected by the difference between the detection distance b2 and the standard distance a2. When the difference meets the standard, the perpendicularity of the formwork 7 installation meets the standard; when the difference does not meet the standard, adjust the formwork 7 and detect again until the perpendicularity of the formwork 7 installation meets the standard.

[0035] The perpendicularity of the formwork 7 installation can be detected by only measuring the detection distance b2 in the utility model, which can reduce the measurement workload and improve the measurement efficiency. The adjustable vertical rod component can avoid personnel climbing for positioning, improve the safety of the detection process, and only one measurement is carried out. Whether the perpendicularity of the formwork 7 installation meets the standard requirements is determined by comparing the measured value with the known data, avoiding errors caused by multiple measurements by personnel, affecting the detection quality, and improving the detection accuracy.

[0036] In this embodiment, the vertical rod component includes a plurality of sleeves that are slidably connected to each other and nested step by step from the inside out. Each lower-level sleeve is sleeved inside its upper-level sleeve. The sleeve arranged in the inner layer is provided with at least one elastic clamping member 63, and a positioning hole 64 adapted to the elastic clamping member 63 is opened on its upper-level sleeve. In this embodiment, the number of sleeves is two, which are divided into an outer sleeve 61 and an inner sleeve 62. That is, the outer sleeve 61 is the upper-level sleeve of the inner sleeve 62, and the inner sleeve 62 is the lower-level sleeve of the outer sleeve 61. In this embodiment, a plurality of elastic clamping members 63 are evenly spaced on the inner sleeve 62 to facilitate precise adjustment of the length of the vertical rod component. The number of positioning holes 64 opened on the outer sleeve 61 is one to ensure the flexibility when adjacent sleeves slide; in other embodiments, the number of positioning holes 64 can also be adjusted to multiple according to the fixing stability. In this embodiment, the elastic clamping member 63 includes an arc-shaped elastic piece and mounting pieces connected to both ends of the arc-shaped elastic piece. The arc-shaped elastic piece and the mounting pieces at both ends thereof can be formed by bending an elastic metal plate. The inner sleeve 62 is provided with mounting holes at predetermined positions. The arc-shaped elastic piece gradually protrudes outward from the mounting holes and is connected to the inside of the inner sleeve 62 through the mounting pieces. A positioning hole 64 adapted to the arc-shaped elastic piece is opened on the outer sleeve 61. When the length of the vertical rod component is adjusted, the corresponding arc-shaped elastic piece can be clamped in the positioning hole 64; when the inner sleeve 62 and the outer sleeve 61 slide relative to each other to adjust the length of the vertical rod component, the arc-shaped elastic piece can be pressed downward or the outer sleeve 61 can be moved to squeeze the arc-shaped elastic piece downward, so that the arc-shaped elastic piece clamped in the positioning hole 64 deforms and compresses inside the inner sleeve 62, thereby realizing the relative sliding between the inner sleeve 62 and the outer sleeve 61.

[0037] In this embodiment, the sleeve arranged in the innermost layer, that is, the inner sleeve 62, is connected to the second cross bar 3, and the sleeve arranged in the outermost layer, that is, the outer sleeve 61, is connected to the first cross bar 1; in other embodiments, the inner sleeve 62 can also be arranged to be connected to the first cross bar 1 and the outer sleeve 61 can be connected to the second cross bar 3 according to usage habits.

[0038] In this embodiment, the measuring component and the hook 2 are respectively arranged on both sides of the vertical rod component for measuring operations. In other embodiments, they can also be arranged on the same side according to the construction environment and space requirements.

[0039] In other embodiments, an operating handrail or an anti-slip sleeve can also be provided on the outside of the vertical rod component to better facilitate personnel to hold and operate, and improve the high-altitude positioning efficiency.

[0040] The utility model does not require personnel to work at heights, and one person can quickly and accurately complete the detection of the verticality of formwork installation; it has the advantages of simple structure, low processing cost, high construction safety, high detection efficiency and detection quality, and can save labor costs.

[0041] Embodiment 2:

[0042] AsFigures 4 to 5 As shown, in this embodiment, the second crossbar 3 is telescopic to adjust its length. The second crossbar 3 includes a plurality of connecting pipes 31 sleeved with each other. At least one adjustment hole is formed in each connecting pipe 31. The adjacent connecting pipes 31 are slidably sleeved and fixed in length by inserting them into the fixing component 32 through the corresponding adjustment holes. The fixing component 32 includes a fixing bolt and a fixing nut. The telescopic structure of the second crossbar 3 can be flexibly selected based on the common technical knowledge of those skilled in the art. The structure with adjustable length of the second crossbar 3 can be applied to the construction scenarios of square timbers 8 and steel pipes 9 with different sizes, improving the reuse rate of the device and facilitating popularization and application. The structure with adjustable length of the second crossbar 3 can also fix the second crossbar 3 at different positions such as the formwork 7 or the square timber 8 according to the usage requirements, improving the flexibility of application and better adapting to different construction environments. It should be noted that the length of the second crossbar 3 needs to be fixed in advance according to the fixing position, the size of the construction materials, etc. before the perpendicularity detection, as long as the adjusted distance b1 is equal to the reference distance a1. That is, during the perpendicularity detection, the vertical rod component can be used as the reference line after the translation of the formwork 7, and only the detection distance b2 needs to be measured to determine whether the installation perpendicularity of the formwork 7 meets the standard requirements.

[0043] The second crossbar 3 and the vertical rod component can also be movably connected to move along the direction parallel and / or perpendicular to the length of the vertical rod component, improving the flexibility of the device. Moving along the direction perpendicular to the length of the vertical rod component can realize the function of adjusting the adjusted distance b1. Moving along the direction parallel to the length of the vertical rod component can adjust the distance between the first crossbar 1 and the second crossbar 3, so that the second crossbar 3 can avoid obstacles and be fixed against the outside of the formwork 7. For example, when the length of the second crossbar 3 is fixed and needs to be inserted into the interval between adjacent square timbers 8, but the second crossbar 3 is just located at the position of the square timber 8, the second crossbar 3 can be moved along the direction parallel to the length of the vertical rod component to insert the second crossbar 3 into the interval between any adjacent square timbers 8, improving the construction efficiency and the flexibility of the device usage and facilitating popularization and application. In this embodiment, the second crossbar 3 can only move along the length direction of the vertical rod component, and its moving mode can be flexibly mastered based on the common technical knowledge of those skilled in the art. In this embodiment, the second crossbar 3 is connected to a sliding sleeve sleeved outside the vertical rod component. The sliding sleeve 33 is slidably sleeved at the bottom of the inner sleeve 62 and fixed by screwing in a fastening bolt.

[0044] In this embodiment, scale lines for detection are provided on the surface of the second cross bar 3. The second cross bar 3 is arranged in a cross shape with the vertical bar member. The length of the second cross bar 3 along the vertical bar member towards the side close to the template 7 is adjustable. Scale lines corresponding to the plumb bob 5 are provided on the second cross bar 3 along the vertical bar member towards the side away from the template 7. When detecting the perpendicularity of the template 7 and the perpendicularity meets the requirements, the plumb bob 5 can point to the corresponding standard range on the scale line; when the perpendicularity of the template 7 does not meet the requirements, the plumb bob 5 deviates outside the corresponding standard range on the scale line. This method can replace the measuring ruler to quickly detect the perpendicularity, and can also avoid measurement errors caused by improper operation when manually measuring the horizontal distance by personnel, improving the measurement quality and efficiency. In this embodiment, the scale line is provided on the second cross bar 3 and the second cross bar 3 is located at the bottom of the vertical bar member. Personnel can measure closely and quickly. When it is necessary to compare with a position located at a high place, the measurement is convenient and fast, which is better applied to the construction requirements of perpendicularity measurement with a high place.

[0045] In different embodiments, the length of the suspension rope 4 needs to be adapted to the adjusted length of the vertical bar member. Different lengths of suspension ropes can be pre-purchased in advance and detachably installed with the first cross bar 1 according to the requirements. In this embodiment, the measuring component further includes a spool 41 rotatably connected to the vertical bar member and a suspension rope positioning member 42 connected to the first cross bar 1 to set up the suspension rope 4. The end of the suspension rope 4 away from the plumb bob 5 is wound around the spool 41. By using the suspension rope 4 with adjustable length in combination with the vertical bar member with adjustable length, it can be applied to the perpendicularity detection of different template heights, with a wide measurement range and strong practicability. In this embodiment, a rotating rod is vertically connected to the bottom of the inner sleeve 62. The spool 41 is rotatably sleeved outside the rotating rod. The end of the rotating rod away from the inner sleeve 62 is vertically connected to the limiting plate. The limiting plate can be clamped outside the spool 41 to prevent the spool 41 from slipping when rotating. A turning handle is provided on the spool 41 for convenient operation. When the length of the suspension rope 4 is adjusted, the turning handle can be fixed to the limiting plate to fix the length of the suspension rope 4. The suspension rope positioning member 42 can be a round rod or a roller, which can position the installation route of the suspension rope 4. In this embodiment, there are multiple suspension rope positioning members 42 and they are evenly spaced on the first cross bar 1. The detection personnel can select all or part of the suspension rope positioning members 42 to set up the suspension rope 4 according to the requirements and the construction environment, improving the detection flexibility and can be used for detection in complex environments. In other embodiments, the first cross bar 1 can also be provided with scales to facilitate quickly determining the standard distance a2. In this embodiment, the vertical bar member is provided with multiple limiting rings 43 that can be sleeved outside the suspension rope 4 to position the installation route of the suspension rope 4. In this embodiment, one limiting ring 43 is provided on each of the inner sleeve 62 and the outer sleeve 61. The fixing method of the multiple limiting rings 43 and the suspension rope 4 is simple, and it can also prevent the hidden trouble of winding when the length of the suspension rope 4 is adjusted, better matching with the vertical bar member with adjustable length to meet the perpendicularity detection requirements of templates 7 of various heights and improving the adjustment and detection efficiency of personnel.

[0046] The working process of this example is as follows:

[0047] Preparation work: According to the height of the template 7 to be measured, slide the outer sleeve 61 and the inner sleeve 62 relative to each other to adjust the length of the vertical rod component. When the length of the vertical rod component is fixed, fix the corresponding elastic clamping member 63 through the positioning hole 64 to fix the length of the vertical rod component; adjust the length of the second cross bar 3 so that the adjustment distance b1 is equal to the control distance a1. According to the construction environment, lay the suspension rope on the corresponding suspension rope positioning member 42 and determine the standard distance a2.

[0048] When detecting the verticality of the installation of the template 7, lift the hook 2 to a predetermined height through the vertical rod component and hang it on the steel pipe 9, and fix it by abutting the second cross bar 3 against the outside of the template 7. When the second cross bar 3 cannot be abutted against the outside of the template 7 due to the influence of the installation positions such as the square timber 8, the second cross bar 3 can be moved along the length direction of the vertical rod component so that the second cross bar 3 can be inserted into the space between the corresponding adjacent square timbers 8 and abut against the outside of the template 7. At this time, the vertical rod component can be used as the reference line after the template 7 is translated. Through the scale line provided on the second cross bar 3, detect whether the horizontal distance from the plumb bob 5 to the vertical rod component meets the standard, that is, whether the error range between the detection distance b2 and the standard distance a2 meets the standard, that is, whether the distances from both ends of the suspension rope 4 vertically arranged under the influence of gravity to the template 7 meet the error standard, that is, whether the verticality of the installation of the template 7 meets the standard. When the verticality error of the installation of the template 7 exceeds the standard range, adjust the template 7 and then conduct the detection until the error meets the requirements of the standard range.

[0049] After the detection is completed, the measuring component can be disassembled and the length of the vertical rod component can be shortened to reduce the floor space during storage.

[0050] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A template installation verticality detection device, characterized in that, Comprising: A first positioning member, which includes a first cross bar and a hook that can be hung on any steel pipe outside the template, and the hook is connected to the first cross bar; A vertical bar member, which is perpendicularly connected to the first cross bar, and the vertical bar member is telescopic to lift the hook to a predetermined height; A second positioning member, which includes a second cross bar perpendicularly connected to the vertical bar member. When the hook is hung on the corresponding steel pipe, the second cross bar can be abutted against the outside of the template to adjust the parallelism between the vertical bar member and the template; A measuring member, which includes a suspension rope connected to the first cross bar and a plumb bob connected to the end of the suspension rope.

2. The template installation verticality detection device according to claim 1, characterized in that: The second cross bar is telescopic to adjust the length.

3. The template installation verticality detection device according to claim 1, characterized in that: The second cross bar is movably connected to the vertical bar member to move along the direction parallel and / or perpendicular to the length of the vertical bar member.

4. The template installation verticality detection device according to claim 1, characterized in that: Scale lines for detection are provided on the surface of the second cross bar.

5. The template installation verticality detection device according to claim 1, characterized in that: The measuring member further includes a spool rotatably connected to the vertical bar member and a suspension rope positioning member connected to the first cross bar for laying the suspension rope, and the end of the suspension rope away from the plumb bob is wound around the spool.

6. The template installation verticality detection device according to any one of claims 1-5, characterized in that: The vertical bar member includes a plurality of sleeves that are slidably connected to each other and nested step by step from the inside out. Each lower-level sleeve is sleeved inside its upper-level sleeve. The sleeve provided on the inner layer is provided with at least one elastic clamping member, and a positioning hole adapted to the elastic clamping member is provided on its upper-level sleeve.

7. The template installation verticality detection device according to claim 6, characterized in that: The sleeve provided on the innermost layer is connected to the second cross bar, and the sleeve provided on the outermost layer is connected to the first cross bar.

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