Concentric arc pay-off device and method

Abstract

The invention provides a concentric arc pay-off device and method, and belongs to the technical field of constructional engineering, and the device comprises a horizontal monitoring device, an adjusting and positioning device and an adjusting pay-off device; the horizontal monitoring device comprises three scales, a leveling bubble is arranged in the middle of each scale, long-strip-shaped grooves are formed in the two ends of each scale respectively, and the three scales are partially overlapped through the long-strip-shaped grooves to form a triangle in end-to-end butt joint. Two adjusting positioning holes and one paying-off positioning hole are respectively formed in the overlapped parts of the two strip-shaped grooves at the three corners of the triangle; the adjusting and positioning device comprises a first internal thread hollow screw rod and an external thread positioning nail which are arranged in the adjusting and positioning hole in a penetrating manner; and the adjusting pay-off device comprises a second internal thread hollow screw rod and an external thread positioning pen which are arranged in the pay-off positioning hole in a penetrating manner. By means of the method, the problems that in the prior art, an arc-shaped building paying-off method is prone to deviation, large in data information amount, large in re-checking and reworking workload and the like can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and more specifically, to a concentric arc laying-out device and method. Background Art

[0002] In architectural design projects, circular and arc-shaped buildings, as a unique form, are gradually showing their unique charm and broad application prospects in various fields. Concentric arc structures have gradually become an important part of modern architectural design due to their unique morphological aesthetics and structural characteristics.

[0003] However, the positioning and layout of this type of structure is usually subject to many challenges and difficulties such as the difficulty in locating the center of the circle, the obstruction of the layout view by the building structure, and the geometric complexity, large amount of data calculation, and difficulty in precision control.

[0004] At present, for the design of concentric arcs, the spacing between each layer of arcs is usually measured by a steel ruler. The positioning of each point on the concentric arc is closely related to the determination of the arc tangent, and deviations are prone to occur. If positioning is performed by precision instruments such as total stations, a large amount of data information needs to be obtained. If an operational error occurs, the workload of review and rework will be large. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a concentric arc laying-out device and method to solve the problems in the prior art that the laying-out method of arc-shaped buildings is prone to deviations, has a large amount of data information, and has a large workload of review and rework when operating errors occur.

[0006] The concentric arc laying-out device provided by the present invention is used for concentric arc laying-out in construction engineering, and is characterized in that it comprises a level monitoring device, an adjustment and positioning device and an adjustment and laying-out device; wherein,

[0007] The level monitoring device comprises three scales, a level bubble is arranged in the middle of the scale surface of the scale, and long grooves are arranged at both ends of the scale surface of the scale, and the three scales are partially overlapped by the long grooves to form a triangle with the ends butted together, and the overlapping parts of the two long grooves at the three corners of the triangle respectively form two adjustment positioning holes and one line-laying positioning hole;

[0008] The adjustment and positioning device comprises a first hollow screw with inner thread inserted into the adjustment and positioning hole and an outer thread positioning nail with a pointed head facing downward and connected to the inside of the first hollow screw with inner thread by threads;

[0009] The adjusting and releasing device comprises a second inner-thread hollow screw rod inserted into the releasing positioning hole and an outer-thread positioning pen with the pen tip facing downward and connected to the inside of the second inner-thread hollow screw rod through a thread arranged on the outer wall of the pen body.

[0010] In addition, a preferred structure is that a first nut is sleeved on the outer side of the top of the first hollow screw with internal thread; and / or a second nut is sleeved on the outer side of the top of the second hollow screw with internal thread.

[0011] In addition, a preferred structure is that the first nut is a butterfly nut; and / or the second nut is a butterfly nut.

[0012] In addition, a preferred structure is that the side surface of the ruler is Z-shaped.

[0013] In addition, a preferred structure is that the length of the ruler is 2-3m and the thickness is 3-5mm.

[0014] In addition, a preferred structure is that the scale is an aluminum alloy scale, a stainless steel scale, or a hot-dip galvanized steel scale.

[0015] In addition, a preferred structure is that the external thread positioning nail is a cross external thread positioning nail.

[0016] The concentric arc laying method provided by the present invention uses the concentric arc laying device as described above to lay out the concentric arc-shaped building, and comprises the following steps:

[0017] Step S1, using a setting-out device to accurately determine an arc of the concentric arc-shaped building as a known arc and determine any point on the arc to be set that is concentric with the known arc as a known setting-out point;

[0018] Step S2, adjusting the length of the ruler so that the two external thread positioning pins are located at any two points of the known arc, and the external thread positioning pen is located at the known line-laying point, and the level bubble is centered by adjusting the relative heights of the external thread positioning pins and the external thread positioning pen to level the ruler;

[0019] Step S3, under the condition of keeping the level bubble centered, the external thread positioning pin is moved along the known arc line, and the external thread positioning pen position moves synchronously to form a new arc line;

[0020] Step S4: Use the new arc line as the arc line to be laid out of the concentric arc-shaped building to complete the laying out process of the concentric arcs of the concentric arc-shaped building.

[0021] In addition, a preferred structure is that the line-laying equipment is a total station; and the known arc is the outer arc or inner arc of the concentric arc-shaped building.

[0022] In addition, the preferred structure is that before the new arc line is used as the arc line to be placed of the concentric arc-shaped building, it also includes:

[0023] The new arc line is checked, and the new arc line that meets the preset check standard after checking is used as the arc line to be placed of the concentric arc building; wherein,

[0024] The method for checking the new arc line comprises:

[0025] Adjust the length of the ruler so that the external thread positioning pins are located at any two points of the ends of the known arc, and the external thread positioning pen is located at any point of the new arc, and the level bubble on the ruler is centered by adjusting the relative heights of the external thread positioning pins and the external thread positioning pen, so that the ruler is leveled;

[0026] Under the condition of keeping the level bubble centered, move the external thread positioning pin from one end to the other end along the known arc, and use the mark left by the position where the external thread positioning pen moves synchronously every time the external thread positioning pin moves to a preset position as the target position mark;

[0027] Calculate the deviation distance between the target position mark and the corresponding position on the new arc line;

[0028] If the deviation distance is within the preset allowable range, the corresponding position of the new arc line is deemed to meet the preset verification standard. Otherwise, the corresponding position of the new arc line is used as the endpoint, and the concentric arc laying-out device is used to lay out and verify the remaining unverified part of the new arc line until a new arc line that meets the preset verification standard is obtained as the arc line to be laid out of the concentric arc building.

[0029] It can be seen from the above technical scheme that the concentric arc laying-out device and method provided by the present invention, through the structural design of the horizontal monitoring device, the adjusting and positioning device and the adjusting and laying-out device, when laying out the arc of a concentric arc-shaped building, it is only necessary to use a precision laying-out instrument to determine a known arc and a known point of the arc to be laid, and the triangulation positioning principle can be used to complete the laying out of the arc to be laid; specifically, the level bubble on the horizontal monitoring device is used to monitor the horizontality of the triangular plane formed by three rulers, and then two adjusting and positioning devices are used to perform positioning and movement on the known arc, and the adjusting and positioning devices placed at the known point are used to adjust the position of the known arc. The node-laying device utilizes the triangulation positioning principle to draw the arc to be laid. The three scales are connected end to end by the adjusting positioning device and the adjusting laying device through a long groove, and the length is adjustable. If the known arc and the arc to be laid are not at the same elevation, the height of the external thread positioning nail and the external thread positioning pen can be adjusted for leveling. The device has high flexibility and wide application. The present invention can effectively solve the problems of precision control of concentric arc positioning and laying out and the difficulty of positioning verification. It can greatly reduce the use of precision instruments such as total stations and save time for obtaining a large amount of data information, improve the efficiency of laying out, reduce construction costs, and has great promotion value.

[0030] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more apparent and easily understood.

[0032] Figure 1 2 is a schematic structural diagram of a concentric arc pay-off device according to an embodiment of the present invention;

[0033] Figure 2 is a side cross-sectional view of a ruler according to an embodiment of the present invention;

[0034] Figure 3 A top view of a wire-adjusting pay-off device according to an embodiment of the present invention;

[0035] Figure 4 is a side sectional view of an adjusting pay-off device according to an embodiment of the present invention;

[0036] Figure 5 A bottom view of a wire-adjusting pay-off device according to an embodiment of the present invention;

[0037] Figure 6 is a side sectional view of an adjusting and positioning device according to an embodiment of the present invention;

[0038] Figure 7 is a flow chart of a concentric arc laying-out method according to an embodiment of the present invention;

[0039] Figure 8 It is a flowchart illustrating a concentric arc laying-out method according to an embodiment of the present invention.

[0040] In the attached drawings, 1-ruler, 11-level bubble, 12-long groove, 2-adjusting positioning device, 21-first inner thread hollow screw, 22-outer thread positioning nail, 23-first nut, 3-adjusting pay-off device, 31-second inner thread hollow screw, 32-outer thread positioning pen, 33-second nut.

[0041] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0042] In view of the above-mentioned problems that in the prior art, the method for laying out curved buildings is prone to deviations, has a large amount of data information, and requires a large amount of review and rework when operating errors occur, a concentric arc laying-out device and method are proposed.

[0043] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] In order to illustrate the concentric arc pay-off device and method provided by the present invention, Figure 1 The structure of a concentric arc pay-off device according to an embodiment of the present invention is shown; Figure 2 shows a lateral cross-sectional structure of a scale according to an embodiment of the present invention; Figure 3 The top view of the adjusting pay-off device according to an embodiment of the present invention is shown; Figure 4 The side cross-sectional structure of the adjusting pay-off device according to an embodiment of the present invention is shown; Figure 5 The bottom view structure of the adjusting pay-off device according to the embodiment of the present invention is shown; Figure 6 shows a side cross-section of an adjustment and positioning device according to an embodiment of the present invention; Figure 7 The process of the concentric arc laying-out method according to an embodiment of the present invention is shown; Figure 8 The demonstration process of the concentric arc laying-out method according to an embodiment of the present invention is shown.

[0045] like Figures 1 to 6 As shown together, the concentric arc laying-out device provided by the present invention is used for concentric arc laying-out in construction engineering, and includes a horizontal monitoring device, an adjustment and positioning device 2 and an adjustment and laying-out device 3; wherein, the horizontal monitoring device includes three rulers 1, a level bubble 11 is arranged in the middle of the ruler surface of the ruler 1, and long grooves 12 are respectively arranged at both ends of the ruler surface of the ruler 1, and the three rulers 1 are partially overlapped by the long grooves 12 to form a triangle with end to end butted, and the overlapping parts of the two long grooves 12 at the three corners of the triangle respectively form two adjustment positioning holes and one laying-out positioning hole; the adjustment and positioning device 2 includes a first inner thread hollow screw 21 inserted into the adjustment positioning hole and an outer thread positioning nail 22 with a pointed head facing downward and connected to the inside of the first inner thread hollow screw 21 by a thread; the adjustment and laying-out device 3 includes a second inner thread hollow screw 31 inserted into the laying-out positioning hole and an outer thread positioning pen 32 with a pen tip facing downward and connected to the inside of the second inner thread hollow screw 31 by a thread arranged on the outer wall of the pen body.

[0046] The “first”, “second” and “third” in the present invention are used to distinguish the positions of components and do not involve any special meanings.

[0047] Among them, the external thread positioning pen 32 is any type of pen with a threaded structure on the outer periphery of the pen body, such as a pencil, by setting a threaded structure on the outer periphery of the pencil body; of course, it can also be other pens such as ballpoint pens, signature pens, etc., and the present invention does not make any special limitation on this.

[0048] Through the structural design of the level monitoring device, the adjustment and positioning device 2 and the adjustment and laying-out device 3, when laying out the arc of a concentric arc-shaped building, it is only necessary to determine a known arc and a known point of the arc to be laid out with the help of a precision laying-out instrument, and then the laying-out of the arc to be laid out can be completed by using the triangulation positioning principle; specifically, the level bubble 11 on the level monitoring device is used to monitor the horizontality of the triangular plane formed by the three rulers 1, and then the two adjustment and positioning devices 2 are used to perform positioning and movement on the known arc, and the adjustment and laying-out device 3 placed at the known point uses the triangulation positioning principle to The arc to be laid is drawn, and the three rulers 1 are connected end to end by the adjusting positioning device 2 and the adjusting line-laying device 3 through the long groove 12, and the length is adjustable; if the known arc and the arc to be laid are not at the same elevation, the height of the external thread positioning nail 22 and the external thread positioning pen 32 can be adjusted for leveling, which has high flexibility and wide application; the present invention can effectively solve the problems of precision control of concentric arc positioning and line-laying and the difficulty of positioning verification; it can greatly reduce the use of precision instruments such as total stations and save time for obtaining a large amount of data information, improve the efficiency of line-laying work, reduce construction costs, and has great promotion value.

[0049] As a preferred solution of the present invention, a first nut 23 is sleeved on the top outer side of the first hollow screw with internal thread 21 ; and / or a second nut 33 is sleeved on the top outer side of the second hollow screw with internal thread 31 .

[0050] Specifically, the first nut 23 is used to facilitate the adjustment of the first hollow screw rod 21 with an inner thread to fix the connection between the two scales 1 ; the second nut 33 is used to facilitate the adjustment of the second hollow screw rod 31 with an inner thread to fix the connection between the two scales 1 .

[0051] As a preferred solution of the present invention, the first nut 23 is a butterfly nut; and / or the second nut 33 is a butterfly nut.

[0052] It should be noted that the first nut 23 and the second nut 33 are preferably, but not limited to, butterfly nuts.

[0053] As a preferred solution of the present invention, the side surface of the ruler 1 is Z-shaped.

[0054] Specifically, by setting the side surface of the ruler 1 to be in a Z shape, it is ensured that when the three rulers 1 are connected end to end and placed horizontally, the level bubbles 11 thereon can all remain centered.

[0055] As a preferred solution of the present invention, the length of the ruler 1 is 2-3 m and the thickness is 3-5 mm.

[0056] It should be noted that the length of the ruler 1 is preferably, but not limited to, 2-3 m, and the thickness is preferably, but not limited to, 3-5 mm. The length and thickness of the ruler 1 are not particularly limited in the present invention.

[0057] As a preferred embodiment of the present invention, the scale 1 is an aluminum alloy scale, a stainless steel scale, or a hot-dip galvanized steel scale.

[0058] It should be noted that the scale 1 is preferably, but not limited to, an aluminum alloy scale, a stainless steel scale, or a hot-dip galvanized steel scale, which is not particularly limited in the present invention.

[0059] As a preferred solution of the present invention, the external thread positioning nail 22 is a cross external thread positioning nail.

[0060] like Figure 7 and Figure 8 As shown together, the concentric arc laying method provided by the present invention uses the concentric arc laying device as described above to lay out the concentric arc-shaped building, and comprises the following steps:

[0061] Step S1, using a setting-out device to accurately determine an arc of a concentric circular arc building as a known arc and determine any point on the arc to be set that is concentric with the known arc as a known setting-out point;

[0062] Step S2, adjust the length of the ruler 1 so that the two external thread positioning pins 22 are located at any two points of the known arc, and the external thread positioning pen 32 is located at the known line-laying point, and the level bubble 11 is centered by adjusting the relative heights of the external thread positioning pins 22 and the external thread positioning pen 32, so that the three rulers 1 are leveled;

[0063] Step S3, under the condition of keeping the level bubble 11 centered, the external thread positioning pin 22 is moved along the known arc line, and the external thread positioning pen 32 forms a new arc line in the synchronous movement process;

[0064] Step S4: Use the new arc line as the arc line to be laid out of the concentric arc building to complete the laying out process of the concentric arcs of the concentric arc building.

[0065] As a preferred solution of the present invention, the line-laying equipment is a total station; the known arc is the outer arc or inner arc of a concentric circular arc-shaped building.

[0066] It should be noted that the laying-out equipment is preferably but not limited to a total station, which can be used to accurately determine the arc of a concentric circular arc building and a point of another arc to be laid that is concentric with the arc, i.e., the known arc and the known laying-out point in the present invention. The known arc can be the outer arc of a concentric circular arc building, or it can be the inner arc, i.e., the inner arc of a known concentric circular arc building can be laid out against the outer arc that is concentric with it, or the outer arc of a known concentric circular arc building can be laid out against the inner arc that is concentric with it. The following takes the example of laying out the inner arc of the known concentric circular arc building as an example, and provides a specific explanation:

[0067] The three scales 1 are assembled in the predetermined installation order, and the scales 1 in three directions should be kept horizontal during installation. When the two arcs (the known arc and the arc to be placed) are not at the same elevation, it is necessary to adjust the external thread positioning pins 22 and the cross external thread positioning pen 32 for leveling.

[0068] Use the total station to accurately lay out and determine any point e (point to be laid out) on the known arc AB and the arc CD to be laid out. Adjust the length of the ruler 1 so that the external thread positioning pins 22 of the two adjustment and positioning devices 2 are placed at any two points (point f and point g) on ​​the known arc AB, and adjust the external thread positioning pen 32 of the laying-out device 3 to be placed at point e. Then, by using tools such as a cross screwdriver to adjust the relative heights of the external thread positioning pins 22 and the external thread positioning pen 32, the level bubbles 11 on the three rulers 1 are all centered, that is, the leveling of the three rulers 1 is completed. Finally, move the external thread positioning pin 22 along the circular known arc AB, and ensure that points f and g are always located on the known arc AB. The circular arc CD formed by the external thread positioning pen 32 during the synchronous movement is the arc to be laid.

[0069] As a preferred solution of the present invention, before using the new arc line as the arc line to be placed of the concentric arc building, it also includes:

[0070] The new arc line is checked, and the new arc line that meets the preset check standard after checking is used as the arc line to be placed for the concentric arc building;

[0071] The method for checking the new arc line includes:

[0072] Adjust the length of the ruler 1 so that the external thread positioning pin 22 is located at any two points at the end of the known arc, and the external thread positioning pen 32 is located at any point of the new arc. By adjusting the relative heights of the external thread positioning pin 22 and the external thread positioning pen 32, the level bubble 11 on the ruler 1 is centered, so that the three rulers 1 are leveled;

[0073] Under the condition of keeping the level bubble 11 centered, move the external thread positioning pin 22 from one end to the other end along a known arc, and use the mark left by the synchronously moving position of the external thread positioning pen 32 as the target position mark when the external thread positioning pin 22 moves to a preset position each time;

[0074] Calculate the deviation distance between the target position mark and the corresponding position on the new arc line;

[0075] If the deviation distance is within the preset allowable range, the corresponding position of the new arc line is deemed to meet the preset verification standard. Otherwise, the corresponding position of the new arc line is used as the endpoint, and the concentric arc laying-out device is used to lay out and verify the remaining unverified part of the new arc line until a new arc line that meets the preset verification standard is obtained as the arc line to be laid out of the concentric arc building.

[0076] Specifically, adjust the length of the ruler 1 so that the external thread positioning pins 22 of the two adjustment and positioning devices 2 are placed at any two points (point f and point g) on ​​the known arc AB, and adjust the external thread positioning pen 32 of the release device 3 to be placed at any point (point e) on the new arc line CD. Then use a cross screwdriver or other tool to adjust the relative height of the external thread positioning pins 22 and the cross external thread positioning pen 32 so that the level bubbles 4 of the three rulers 1 are all centered, that is, the leveling of the three rulers 1 is completed. Move the external thread positioning pin 22 along the known arc AB, and ensure that points f and g are always located on the known arc AB. The external thread positioning pen 32 forms a new arc C'D' during the synchronous movement process. Measure the distance between arc CD and arc C'D', and the distance is the deviation. If the deviation is within the allowable range, the verification is completed. If the deviation exceeds the range, the arc needs to be laid out and verified again.

[0077] It can be seen from the above specific embodiments that the concentric arc laying-out device and method provided by the present invention, through the structural design of the level monitoring device, the adjustment positioning device and the adjustment laying-out device, when laying out the arc of a concentric arc-shaped building, it is only necessary to determine a known arc and a known point of the arc to be laid with the help of a precision laying-out instrument, and then the laying-out of the arc to be laid can be completed by using the triangulation positioning principle; specifically, the level bubble on the level monitoring device is used to monitor the horizontality of the triangular plane formed by three rulers, and then two adjustment positioning devices are used to perform positioning movement on the known arc, and the position of the position placed at the known point is determined by the level bubble on the level monitoring device. The adjusting pay-out device utilizes the triangulation positioning principle to draw out the arc to be paid out. The three scales are connected end to end by the adjusting positioning device and the adjusting pay-out device through a long groove, and the length is adjustable. If the known arc and the arc to be paid out are not at the same elevation, the height of the external thread positioning nail and the external thread positioning pen can be adjusted for leveling. The invention has high flexibility and wide application. The invention can effectively solve the problems of precision control of concentric arc positioning pay-out and difficulty in positioning verification. The invention can greatly reduce the use of precision instruments such as total stations and save time for obtaining a large amount of data information, improve the efficiency of pay-out work, reduce construction costs, and has great promotion value.

[0078] As described above, the concentric arc pay-off device and method proposed in the present invention are described by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the concentric arc pay-off device and method proposed in the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A concentric arc laying device, used for concentric arc laying in construction engineering, characterized in that: It includes a level monitoring device, an adjustment and positioning device and an adjustment and line-release device; wherein, The level monitoring device comprises three scales, a level bubble is arranged in the middle of the scale surface of the scale, and long grooves are arranged at both ends of the scale surface of the scale, and the three scales are partially overlapped by the long grooves to form a triangle with the ends butted together, and the overlapping parts of the two long grooves at the three corners of the triangle respectively form two adjustment positioning holes and one line-laying positioning hole; The adjustment and positioning device comprises a first hollow screw with inner thread inserted into the adjustment and positioning hole and an outer thread positioning nail with a pointed head facing downward and connected to the inside of the first hollow screw with inner thread by threads; The adjusting and releasing device comprises a second inner-thread hollow screw rod inserted into the releasing positioning hole and an outer-thread positioning pen with the pen tip facing downward and connected to the inside of the second inner-thread hollow screw rod through a thread arranged on the outer wall of the pen body.

2. The concentric arc pay-off device according to claim 1, characterized in that: A first nut is sleeved on the outer side of the top of the first hollow screw with inner thread; and / or, A second nut is sleeved on the outer side of the top of the second inner-thread hollow screw.

3. The concentric arc pay-off device according to claim 2, characterized in that: The first nut is a butterfly nut; and / or, The second nut is a butterfly nut.

4. The concentric arc pay-off device according to claim 1, characterized in that: The side surface of the ruler is in a Z shape.

5. The concentric arc pay-off device according to claim 1, characterized in that: The length of the ruler is 2-3m and the thickness is 3-5mm.

6. The concentric arc pay-off device according to claim 1, characterized in that: The scale is an aluminum alloy scale, a stainless steel scale, or a hot-dip galvanized steel scale.

7. The concentric arc pay-off device according to claim 1, characterized in that: The external thread positioning nail is a cross external thread positioning nail.

8. A concentric arc laying method, characterized in that: The concentric arc laying-out device as claimed in any one of claims 1 to 7 is used to lay out concentric arc-shaped buildings, comprising the following steps: Step S1, using a setting-out device to accurately determine an arc of the concentric arc-shaped building as a known arc and determine any point on the arc to be set that is concentric with the known arc as a known setting-out point; Step S2, adjusting the length of the ruler so that the two external thread positioning pins are located at any two points of the known arc, and the external thread positioning pen is located at the known line-laying point, and the level bubble is centered by adjusting the relative heights of the external thread positioning pins and the external thread positioning pen to level the ruler; Step S3, under the condition of keeping the level bubble centered, the external thread positioning pin is moved along the known arc line, and the external thread positioning pen position moves synchronously to form a new arc line; Step S4: Use the new arc line as the arc line to be laid out of the concentric arc-shaped building to complete the laying out process of the concentric arcs of the concentric arc-shaped building.

9. The concentric arc laying-out method according to claim 8, characterized in that: The line-setting equipment is a total station; The known arc is the outer arc or inner arc of the concentric arc-shaped building.

10. The concentric arc laying method according to claim 8, characterized in that: Before using the new arc line as the arc line to be placed of the concentric arc building, the method further includes: The new arc line is checked, and the new arc line that meets the preset check standard after checking is used as the arc line to be placed of the concentric arc building; wherein, The method for checking the new arc line comprises: Adjust the length of the ruler so that the external thread positioning pins are located at any two points of the ends of the known arc, and the external thread positioning pen is located at any point of the new arc, and the level bubble on the ruler is centered by adjusting the relative heights of the external thread positioning pins and the external thread positioning pen, so that the ruler is leveled; Under the condition of keeping the level bubble centered, move the external thread positioning pin from one end to the other end along the known arc, and use the mark left by the position where the external thread positioning pen moves synchronously every time the external thread positioning pin moves to a preset position as the target position mark; Calculate the deviation distance between the target position mark and the corresponding position on the new arc line; If the deviation distance is within the preset allowable range, the corresponding position of the new arc line is deemed to meet the preset verification standard. Otherwise, the corresponding position of the new arc line is used as the endpoint, and the concentric arc laying-out device is used to lay out and verify the remaining unverified part of the new arc line until a new arc line that meets the preset verification standard is obtained as the arc line to be laid out of the concentric arc building.

Images