Auxiliary device for construction surveying and setting-out

Abstract

The utility model relates to the technical field of construction engineering surveying equipment, in particular to an auxiliary device for construction surveying paying-off, which comprises a supporting plate, a fixing plate, a stabilizing nail, a driving sleeve and a telescopic column, the supporting plate is horizontally arranged, the fixing plate is horizontally arranged below the supporting plate, the stabilizing nail is fixedly arranged on the lower plate surface of the fixing plate, and the driving sleeve is fixedly arranged on the supporting plate. A mounting hole is formed in the plate surface of the supporting plate, a rotating groove is formed in the hole wall of the mounting hole, the driving sleeve is rotationally arranged in the driving groove, the telescopic column is slidably arranged in the driving sleeve, the end, away from the supporting plate, of the telescopic column penetrates into the mounting hole to be fixedly connected with the upper plate surface of the fixing plate, and the telescopic column cannot be separated from the driving sleeve; the effects that the auxiliary device is prevented from shaking in the surveying and setting-out process, the surveying and setting-out accuracy is improved, and the surveying and setting-out efficiency is improved are achieved.

Description

Technical Field

[0001] This application relates to the field of construction engineering surveying equipment technology, and in particular to an auxiliary device for construction surveying and setting out. Background Technology

[0002] In today's rapidly developing society, urbanization is accelerating, and infrastructure projects such as skyscrapers, bridges, roads, subways, and tunnels are springing up like mushrooms after rain. The planning, construction, and management of these projects all rely heavily on precise engineering surveying techniques. Surveying and setting out is a crucial step in construction engineering; its accuracy directly impacts the precision of construction operations. By conducting prior checks on the positioning and setting out of the construction site, it is ensured that the construction project proceeds safely and smoothly according to the plan.

[0003] The existing auxiliary device for construction surveying and setting out uses a graduated measuring rope. One end of the measuring rope is fixed to a winding roller, and the measuring rope is wound around the winding roller. The winding roller is driven by a motor. Since the winding roller is heavy and not easy to move, the winding roller is rotated and set on a trolley. The trolley is pushed to the designated location for surveying and setting out.

[0004] The existing technical solutions mentioned above have the following drawbacks: During the use of the auxiliary device, the trolley is equipped with wheels, and the trolley will shake when the measuring rope is pulled, resulting in inaccurate measurement and laying out of the line. Therefore, it is necessary to readjust the position of the trolley and reduce the measurement and laying out efficiency. Utility Model Content

[0005] This application provides an auxiliary device for construction surveying and setting out, in order to avoid the auxiliary device shaking during the surveying and setting out process, improve the accuracy and efficiency of the surveying and setting out, and provide such an auxiliary device.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] An auxiliary device for construction surveying and setting out includes a support plate, a fixed plate, a stabilizing nail, a drive sleeve, and a telescopic column. The support plate is horizontally positioned, and the fixed plate is horizontally positioned below the support plate. The stabilizing nail is fixedly positioned on the lower surface of the fixed plate. The support plate has a mounting hole on its surface, and a rotating groove is formed on the wall of the mounting hole. The drive sleeve is rotatably positioned in the drive groove, and the telescopic column is slidably positioned inside the drive sleeve. The end of the telescopic column facing away from the support plate passes through the mounting hole and is fixedly connected to the upper surface of the fixed plate. The telescopic column will not detach from the drive sleeve.

[0008] By adopting the above technical solution, a measuring rope with scale is wound around a winding roller by setting a support plate, a fixed plate, a stabilizing nail, a drive sleeve, and a telescopic column. The measuring rope is pulled to measure and release the wire. The drive sleeve is rotated to drive the fixed plate to move away from the support plate until the stabilizing nail is inserted into the bottom surface, thus fixing the position of the auxiliary device. To prevent the auxiliary device from moving with the measuring rope when it is released, the position of the auxiliary device needs to be readjusted, which would reduce the measurement and release efficiency and interfere with the measurement and release effect.

[0009] Optionally, the drive sleeve has a threaded drive groove that connects the inside and outside of the drive sleeve, and a drive component is fixedly installed on the peripheral wall of the telescopic column. The drive component can slide along the drive groove. The auxiliary device also includes a second motor, which is installed on the surface of the support plate. The end of the output shaft of the second motor passes through the mounting hole and is coaxially fixed to the end of the drive sleeve.

[0010] By adopting the above technical solution, and by setting a driving component, it can slide along the driving groove. When the second motor is used to rotate the driving sleeve, the side wall of the driving groove slides relative to the peripheral wall of the driving component. Because the driving groove is threaded, it can move the fixing plate away from the support plate until the stabilizing nail is inserted into the bottom surface, thereby fixing the position of the auxiliary device.

[0011] Optionally, a limiting groove is formed on the bottom of the rotating groove, and the end of the driving component is slidably disposed in the limiting groove, the length direction of the limiting groove being parallel to the axis of the mounting hole.

[0012] By adopting the above technical solution and opening the limiting groove, the fixed column can be prevented from rotating during movement, thus improving the fixing efficiency.

[0013] Optionally, the auxiliary device also includes a wire guide, a winding roller, and a first motor. Two wire guides are provided and suspended on the upper part of the support plate. The winding roller is rotatably disposed between the two wire guides. The first motor is disposed on the surface of the support plate through a connecting plate. The first motor is located on the side of the wire guide away from the winding roller. The end of the output shaft of the first motor passes through the wire guide and is coaxially fixed to the end face of the winding roller.

[0014] By adopting the above technical solution and setting up a first motor, the first motor can drive the winding roller to automatically retract the measuring rope after the measurement and laying out of the rope, thereby improving work efficiency.

[0015] Optionally, a cable management groove is formed on the opposite surfaces of the two cable management discs, and a cable management rod is slidably arranged between the two cable management discs. The cable management rod is located below the winding roller, and its end is adapted to the cable management groove and slidably arranged in the cable management groove. A spring is provided in the cable management groove, and the spring is located on the side of the cable management rod away from the winding roller. One end of the spring is fixedly connected to the end wall of the cable management groove, and the other end is fixedly connected to the peripheral wall of the end of the cable management rod.

[0016] By adopting the above technical solution and setting up a wire guide rod, when the measuring rope is retrieved after measurement and wire release, the spring squeezes the wire guide rod to make the measuring rope wrap around the winding roller layer by layer, avoiding the measuring rope from being randomly wrapped around the circumference of the winding roller, which would result in excessively long wire release time when used again.

[0017] Optionally, the support plate is further provided with two second connecting plates. The surfaces of the two second connecting plates are parallel to each other and each is provided with a limiting plate on its upper part. The opposite surfaces of the limiting plates are provided with circular grooves, and rotating parts are rotatably arranged in the grooves. A cleaning part is provided between the two rotating parts.

[0018] By adopting the above technical solution, and by setting a limiting component, a rotating component, and a cleaning component, the measuring rope is inserted into the cleaning component during the laying process to avoid the cleaning component interfering with the laying speed. When the measuring rope is retracted, the cleaning component is rotated so that the bristles on the peripheral wall of the cleaning component contact the surface of the measuring rope to clean the dust attached to the surface of the measuring rope and prevent the dust from contaminating the scale on the measuring rope.

[0019] Optionally, a receiving hole is provided concentrically on the peripheral wall of the rotating component, and a limiting component is slidably arranged in the receiving hole. A spring is provided between the limiting component and the bottom of the receiving hole. Two limiting holes are provided on the surface of the limiting disk. The two limiting holes are spaced apart and are both connected to a circular groove on the surface of the limiting disk. The end of the limiting component is adapted to the limiting hole and can be inserted into the limiting hole.

[0020] By adopting the above technical solution, and by setting limiting parts and limiting holes, the angle of the cleaning part can be fixed, preventing the cleaning part from not rotating when cleaning the surface of the measuring rope, thereby improving cleaning efficiency and cleaning effect.

[0021] Optionally, the end face of the limiting member facing away from the rotating member is spherical.

[0022] By adopting the above technical solution, the spherical limiting component makes it easier to adjust the position of the rotating component, thereby cleaning the measuring rope.

[0023] Optionally, the stabilizing pin is conical.

[0024] By adopting the above technical solution, the conical stabilizing nail can be more easily inserted into the ground, thereby fixing the position of the auxiliary device and improving the efficiency of measurement and layout.

[0025] In summary, this application has the following technical effects:

[0026] 1. By setting up a support plate, a fixed plate, a stabilizing nail, a drive sleeve, and a telescopic column, a graduated measuring rope is wound around a winding roller. The measuring rope is pulled to measure and release the wire. The drive sleeve is rotated to drive the fixed plate to move away from the support plate until the stabilizing nail is inserted into the bottom surface, thus fixing the position of the auxiliary device. To prevent the auxiliary device from moving with the measuring rope when it is released, the position of the auxiliary device needs to be readjusted, which reduces the measurement and release efficiency and interferes with the measurement and release effect.

[0027] 2. By setting a driving component, it can slide along the driving groove. When the second motor is used to rotate the driving sleeve, the side wall of the driving groove slides relative to the peripheral wall of the driving component. Because the driving groove is threaded, it can move the fixing plate away from the support plate until the stabilizing nail is inserted into the bottom surface, thus fixing the position of the auxiliary device.

[0028] 3. By setting up a limiting component, a rotating component, and a cleaning component, the measuring rope is inserted into the cleaning component during the laying process to prevent the cleaning component from interfering with the laying speed. When the measuring rope is retracted, the cleaning component is rotated so that the bristles on the periphery of the cleaning component contact the surface of the measuring rope to clean the dust attached to the surface of the measuring rope and prevent the dust from contaminating the scale on the measuring rope. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the object of this application;

[0030] Figure 2 This is a structural diagram from another angle of this application;

[0031] Figure 3 This is a structural diagram from another angle after this application is opened.

[0032] Explanation of reference numerals in the attached drawings: 1. Cable feeding assembly; 11. Support plate; 111. Push rod; 112. Directional wheel; 113. Caster wheel; 114. Mounting hole; 115. Rotating groove; 116. Limiting groove; 12. First connecting plate; 13. Cable management disc; 131. Cable management slide; 132. Cable management rod; 14. Winding roller; 15. First motor; 16. Second connecting plate; 17. Limiting disc; 171. Limiting hole; 18. Rotating component; 181. Limiting component; 19. Cleaning component; 2. Fixing assembly; 21. Fixing plate; 211. Stabilizing nail; 22. Drive sleeve; 221. Drive groove; 23. Telescopic column; 24. Drive component; 25. Second motor. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] This application discloses an auxiliary device for construction surveying and setting out, referring to... Figure 1 and Figure 2The auxiliary device includes a wire laying component 1 and a fixing component 2. The wire laying component 1 can perform measurement wire laying and cleaning and recycling of the measurement rope, so as to prevent dust on the ground from adhering to the surface of the measurement rope after the measurement wire laying is completed, which would contaminate the measurement rope scale and interfere with the measurement wire laying accuracy. The fixing component 2 can fix the wire laying component 1 during the measurement wire laying process, so as to prevent the movable wire laying component 1 from moving and reducing the measurement wire laying efficiency and interfering with the measurement wire laying effect.

[0035] Reference Figure 1 The wire feeding assembly 1 includes a support plate 11, which is placed horizontally and is a strip plate made of metal. A push rod 111 is inclinedly arranged on the upper surface of the support plate 11. The push rod 111 is U-shaped and its two ends are fixed to the upper surface of the support plate 11. The push rod 111 is located at one end of the length direction of the support plate 11 and is inclined from bottom to top towards the outer edge of the support plate 11, making it easier for workers to push. The lower surface of the support plate 11 is provided with directional wheels 112 and universal wheels 113, which are respectively located at both ends of the length direction of the support plate 11. The universal wheels 113 are located on the same side as the push rod 111. There are two directional wheels 112 and two universal wheels 113, and the two directional wheels 112 are respectively located on both sides of the length direction of the support plate 11.

[0036] Reference Figure 1 The support plate 11 is an upper plate surface also provided with a first connecting plate 12. The surface of the first connecting plate 12 is perpendicular to the surface of the support plate 11. There are two first connecting plates 12, which are located on both sides of the support plate 11 along its length. The length of the first connecting plate 12 is parallel to the length of the support plate 11. The surfaces of the two first connecting plates 12 are parallel to each other. The side wall of the first connecting plate 12 away from the support plate 11 is processed inward to form a curved groove.

[0037] Reference Figure 1 The wire feeding assembly 1 also includes a wire feeding disc 13 and a winding roller 14. The wire feeding disc 13 is disposed on the first connecting plate 12. The wire feeding disc 13 is a disc, and its peripheral wall fits against the groove wall of the upper part of the first connecting plate 12. The disc surface of the wire feeding disc 13 is flush with the plate surface of the first connecting plate 12. Two wire feeding discs 13 are provided, and the two wire feeding discs 13 are respectively disposed on the two first connecting plates 12. A circular groove is opened in the middle of the opposite disc surface of the two wire feeding discs 13. The winding roller 14 is disposed between the two wire feeding discs 13. The winding roller 14 is a cylinder, and its end is adapted to the groove on the disc surface of the wire feeding disc 13. Both ends of the winding roller 14 are rotatably inserted into the groove. The axis of the winding roller 14 is perpendicular to the length direction of the support plate 11, and the winding roller 14 is coaxially arranged with the wire feeding disc 13. The measuring rope is wound on the winding roller 14.

[0038] Combination Figure 1 and Figure 3 The thread-guiding disc 13 has a strip-shaped thread-guiding groove 131 on its opposite disc surface. The thread-guiding groove 131 is located between the winding roller 14 and the first connecting plate 12. The length direction of the thread-guiding groove 131 is perpendicular to the surface of the support plate 11. The thread-guiding groove 131 is connected to the circular groove. A wire guide rod 132 is also provided between the two wire guide reels 13. The wire guide rod 132 is cylindrical. The end of the wire guide rod 132 is adapted to the wire guide groove 131 and is slidably disposed in the wire guide groove 131. The axis of the wire guide rod 132 is parallel to the axis of the winding roller 14. A spring is provided in the wire guide groove 131. The spring is located on the side of the wire guide rod 132 away from the winding roller 14. One end of the spring is fixedly connected to the end of the wire guide groove 131, and the other end is fixedly connected to the peripheral wall of the end of the wire guide rod 132. When the measuring rope is retracted after measurement and wire release, the wire guide rod 132 causes the measuring rope to be wound layer by layer on the winding roller 14 through the spring.

[0039] Combination Figure 1 and Figure 3 The upper surface of the support plate 11 is also fixedly connected to a first motor 15 via a connecting plate. The first motor 15 is located on the side of the winding reel 13 away from the winding roller 14. The output shaft axis of the first motor 15 is coaxially arranged with the winding reel 13, and the output shaft of the first motor 15 passes through the winding reel 13 and is coaxially fixedly connected to the end face of the winding roller 14. The upper surface of the support plate 11 is also provided with a second connecting plate 16. The surface of the second connecting plate 16 is perpendicular to the surface of the support plate 11. There are two second connecting plates 16, which are located on both sides of the length direction of the support plate 11. The length direction of the second connecting plates 16 is parallel to the length direction of the support plate 11, and the surfaces of the two second connecting plates 16 are parallel to each other. The side wall of the second connecting plate 16 away from the support plate 11 is machined inward to form an arc-shaped groove.

[0040] Reference Figure 1 Each of the two second connecting plates 16 is provided with a limiting plate 17. The limiting plate 17 is a disc, and its peripheral wall fits into the groove wall of the upper part of the first connecting plate 12. The surface of the limiting plate 17 is flush with the surface of the first connecting plate 12. A circular groove is formed on the opposite surface of each of the two limiting plates 17. A rotating component 18 is rotatably mounted in the circular groove. The rotating component 18 is a circular plate, coaxially mounted with the limiting plate 17. The surface of the rotating component 18 is flush with the surface of the limiting plate 17. A cleaning component 19 is provided between the two rotating components 18. The cleaning component 19 is made of a single circular rod with its ends connected. The axes of the two sections of the circular rod in the middle of the cleaning component 19 are parallel to each other. The two ends of the cleaning component 19 are semi-elliptical. The two ends of the cleaning component 19 are fixedly connected to the center of the opposite surfaces of the two rotating components 18. The length of the cleaning component 19 is parallel to the axis of the winding roller 14. The cleaning component 19 has bristles on its surrounding wall, which can clean the dust adhering to the surface of the measuring rope.

[0041] Reference Figure 1 A receiving hole is provided in the center of the circumferential wall of the rotating part 18. A spring is installed in the receiving hole. One end of the spring is fixedly connected to the bottom of the receiving hole, and the other end of the spring is fixedly connected to a limiting member 181. The limiting member 181 is a cylinder with one end spherical. The end face of the limiting member 181 away from the spherical surface is fixedly connected to the spring. The limiting member 181 is adapted to the receiving hole and is slidably disposed in the receiving hole. The spherical surface of the limiting member 181 protrudes from the circumferential wall of the rotating part 18. Two limiting holes 171 are provided on the opposite surfaces of the limiting disk 17. The limiting holes 171 are connected to the circular grooves on the surface of the limiting disk 17, and the openings of the two limiting holes 171 are facing the axis of the limiting disk 17. The two limiting holes 171 are spaced apart. One limiting hole 171 is perpendicular to the surface of the support plate 11, and the other limiting hole 171 is close to the winding roller 14. The spherical surface of the limiting member 181 is adapted to the limiting hole 171 and can be inserted into the limiting hole 171. The limiting member 181 and the limiting hole 171 can prevent the cleaning member 19 from rotating during the cleaning of the measuring rope, thereby reducing the cleaning efficiency.

[0042] Combination Figure 1 and Figure 2 The fixing component 2 includes a fixing plate 21, which is disposed below the support plate 11. The fixing plate 21 is located between two directional wheels 112 and two universal wheels 113. The length direction of the fixing plate 21 is parallel to the length direction of the support plate 11. The surface of the fixing plate 21 is parallel to the surface of the support plate 11 and is spaced apart. A number of conical stabilizing nails 211 are provided on the lower surface of the fixing plate 21. The surface of the stabilizing nails 211 away from the tip is fixed to the lower surface of the fixing plate 21. The number of stabilizing nails 211 are distributed in a strip pattern on the lower surface of the fixing plate 21.

[0043] Combination Figures 1 to 3 The support plate 11 has two circular mounting holes 114 on its surface, which connect the upper and lower surfaces of the support plate 11. The axis of the mounting holes 114 is perpendicular to the surface of the support plate 11. The two mounting holes 114 are located on both sides of the cleaning component 19 and the winding roller 14, respectively. Each mounting hole 114 has a rotating groove 115 on its wall. The rotating groove 115 is an annular groove, and its axis coincides with the axis of the mounting hole 114. The fixing assembly 2 also includes a drive sleeve 22, which is rotatably disposed in the rotating groove 115. There are two drive sleeves 22, which are respectively disposed in the two rotating grooves 115. The drive sleeve 22 is a cylinder closed at one end. The outer peripheral wall of the drive sleeve 22 is adapted to the rotating groove 115 and is in contact with the bottom of the rotating groove 115. The closed end of the drive sleeve 22 is away from the fixing plate 21.

[0044] Combination Figures 1 to 3The fixing component 2 also includes a telescopic column 23 and a driving component 24. Two telescopic columns 23 are disposed within the driving sleeve 22, each located within a separate driving sleeve 22. The telescopic columns 23 are adapted to and slidably inserted into the inner wall of the driving sleeve 22, and are coaxially arranged with the driving sleeve 22. The end of the telescopic column 23 furthest from the driving sleeve 22 is fixedly connected to the upper surface of the fixing plate 21. The ends of the two telescopic columns 23 are located at opposite ends along the length of the upper surface of the fixing plate 21. A threaded driving groove 221 is formed on the peripheral wall of the driving sleeve 22, connecting the inside and outside of the driving sleeve 22. A driving component 24, cylindrical in shape, is disposed on the peripheral wall of the telescopic column 23. The axis of the driving component 24 is perpendicular to the axis of the telescopic column 23. The driving component 24 is inserted into the peripheral wall of the driving sleeve 22 and slidably disposed within the driving groove 221, with the peripheral wall of the driving component 24 slidably fitting against the groove wall of the driving groove 221.

[0045] Reference Figure 3 A limiting groove 116 is formed on the bottom of the rotating groove 115. The length direction of the limiting groove 116 is parallel to the axis of the mounting hole 114. The end of the driving component 24 away from the telescopic column 23 is adapted to the limiting groove 116 and slidably disposed in the limiting groove 116 to prevent the telescopic column 23 from rotating during movement. The fixing assembly 2 also includes a second motor 25, which is disposed on the upper surface of the support plate 11. The output shaft of the second motor 25 is coaxially arranged with the mounting hole 114, and the end of the output shaft of the second motor 25 passes through the mounting hole 114 and is fixedly connected to the closed end of the driving sleeve 22.

[0046] Combination Figures 1 to 3 The second motor 25 drives the drive sleeve 22 to rotate, causing the drive component 24 to slide along the drive groove 221 and the limiting groove 116, so that the fixing plate 21 moves away from the support plate 11 until the stabilizing nail 211 is inserted into the ground, fixing the auxiliary device and preventing the auxiliary device from moving during the measurement direction process, which would interfere with the measurement and laying effect.

[0047] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An auxiliary device for construction surveying and setting out, characterized in that: The auxiliary device includes a support plate (11), a fixing plate (21), a stabilizing nail (211), a drive sleeve (22), and a telescopic column (23). The support plate (11) is horizontally arranged, and the fixing plate (21) is horizontally arranged below the support plate (11). The stabilizing nail (211) is fixedly arranged on the lower surface of the fixing plate (21). The support plate (11) has a mounting hole (114) on its surface. The mounting hole (114) has a rotating groove (115) on its wall. The drive sleeve (22) is rotatably arranged in the drive groove (221). The telescopic column (23) is slidably arranged in the drive sleeve (22). The end of the telescopic column (23) away from the support plate (11) passes through the mounting hole (114) and is fixedly connected to the upper surface of the fixing plate (21). The telescopic column (23) will not detach from the drive sleeve (22).

2. The auxiliary device for construction surveying and setting out according to claim 1, characterized in that: The drive sleeve (22) has a threaded drive groove (221) that connects the inside and outside of the drive sleeve (22). A drive component (24) is fixedly installed on the periphery of the telescopic column (23). The drive component (24) can slide along the drive groove (221). The auxiliary device also includes a second motor (25). The second motor (25) is installed on the upper surface of the support plate (11). The output shaft end of the second motor (25) passes through the mounting hole (114) and is coaxially fixed to the end of the drive sleeve (22).

3. The auxiliary device for construction surveying and setting out according to claim 2, characterized in that: A limiting groove (116) is provided on the bottom of the rotating groove (115), and the end of the driving member (24) is slidably disposed in the limiting groove (116). The length direction of the limiting groove (116) is parallel to the axis of the mounting hole (114).

4. The auxiliary device for construction surveying and setting out according to claim 3, characterized in that: The auxiliary device also includes a wire guide (13), a winding roller (14), and a first motor (15). Two wire guides (13) are provided and suspended on the upper part of the support plate (11). The winding roller (14) is rotatably disposed between the two wire guides (13). The first motor (15) is disposed on the upper surface of the support plate (11) through a connecting plate. The first motor (15) is located on the side of the wire guide (13) away from the winding roller (14). The output shaft end of the first motor (15) passes through the wire guide (13) and is coaxially fixed to the end face of the winding roller (14).

5. The auxiliary device for construction surveying and setting out according to claim 4, characterized in that: Two wire feeding discs (13) are provided with wire feeding grooves (131) on their opposite surfaces. A wire feeding rod (132) is slidably arranged between the two wire feeding discs (13). The wire feeding rod (132) is located below the winding roller (14). The end of the wire feeding rod (132) is adapted to the wire feeding groove (131) and is slidably arranged in the wire feeding groove (131). A spring is provided in the wire feeding groove (131). The spring is located on the side of the wire feeding rod (132) away from the winding roller (14). One end of the spring is fixedly connected to the end wall of the wire feeding groove (131), and the other end is fixedly connected to the peripheral wall of the end of the wire feeding rod (132).

6. The auxiliary device for construction surveying and setting out according to claim 1, characterized in that: The upper surface of the support plate (11) is also provided with two second connecting plates (16). The surfaces of the two second connecting plates (16) are parallel to each other and each is provided with a limiting plate (17) on its upper part. The opposite surfaces of the limiting plates (17) are provided with circular grooves. Rotating parts (18) are rotatably arranged in the grooves. A cleaning part (19) is provided between the two rotating parts (18).

7. An auxiliary device for construction surveying and setting out according to claim 6, characterized in that: The rotating part (18) has a receiving hole on its peripheral wall, and a limiting part (181) is slidably arranged in the receiving hole. A spring is provided between the limiting part (181) and the bottom of the receiving hole. The limiting plate (17) has two limiting holes (171) on its surface. The two limiting holes (171) are spaced apart and are both connected to the circular groove on the surface of the limiting plate (17). The end of the limiting part (181) is adapted to the limiting hole (171) and can be inserted into the limiting hole (171).

8. An auxiliary device for construction surveying and setting out according to claim 7, characterized in that: The end face of the limiting member (181) facing away from the rotating member (18) is spherical.

9. An auxiliary device for construction surveying and setting out according to claim 8, characterized in that: The stabilizing nail (211) is conical.

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