Auxiliary tool for leveling staff

Abstract

The utility model provides an auxiliary tool for use of a leveling staff, which comprises a base provided with a first fixing piece for fixing the leveling staff; the multiple connecting rods are fixedly connected to the edge part of the upper surface of the base, and the multiple connecting rods are distributed in the circumferential direction of the base at equal intervals; and the connecting disc is connected to one end, deviating from the base, of the connecting rod and is provided with a first opening for the leveling rod to penetrate through and a second fixing piece for fixing the leveling rod. Therefore, different parts of the leveling rod can be fixed through the first fixing piece and the second fixing piece, so that the leveling rod can be stably and vertically placed.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering measurement equipment, in particular to an auxiliary tool for using a leveling rod. Background Art

[0002] A level rod, also known as a level, is the primary tool for leveling. It's typically used in conjunction with a level to determine the elevation difference between two points on the ground. When using a level rod to measure the elevation difference between two points on the ground, it's important to ensure it's placed vertically to prevent tilting, which could cause the reading to no longer reflect the true horizontal elevation difference. Currently, in actual operation, a tripod is used to support the level rod to save manpower. However, operators have found that tripods don't stably support the level rod, causing it to tilt during use. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide an auxiliary tool for using a leveling rod, which is used to solve the problem that the leveling rod cannot be stably placed vertically, so as to at least partially solve the problems in the related art.

[0004] Based on the above purpose, the utility model provides an auxiliary tool for using a leveling rod, comprising:

[0005] A base having a first fixing member for fixing a level rod;

[0006] a plurality of connecting rods fixedly connected to the edge of the upper surface of the base, wherein the connecting rods are evenly spaced along the circumference of the base;

[0007] The connecting plate is connected to the end of the connecting rod away from the base and has a first opening for the level rod to pass through and a second fixing piece for fixing the level rod.

[0008] Optionally, the connecting rod includes a fixedly connected supporting section and a connecting section;

[0009] The supporting section extends along a first direction, and the connecting section extends along a vertical second direction. The first direction and the second direction form an angle. One end of the supporting section away from the connecting section is fixedly connected to the edge of the upper surface of the base, and the connecting plate is connected to the connecting section.

[0010] Optionally, a limit plate is fixedly connected to a connection portion between the support segment and the connection segment, and the limit plate is located below the connection plate.

[0011] Optionally, the connecting section includes a threaded rod, the connecting plate is provided with a through hole for the threaded rod to pass through, a nut for supporting the connecting plate is threadedly connected to the threaded rod, and the nut is located below the connecting plate.

[0012] Optionally, the first fixing member includes a connecting member and a bearing member;

[0013] One end of the connecting member is provided with a connecting portion for connecting to the base, and the other end is provided with a first plug-in slot for plugging into the supporting member, and a limit slot is provided on the inner wall surface of the first plug-in slot. One end of the supporting member is provided with a first plug-in column corresponding to the first plug-in slot, and a limit block corresponding to the limit slot is provided on the outer wall surface of the first plug-in column. The other end of the supporting member is provided with a second plug-in slot for plugging the level ruler and a first threaded hole connected to the second plug-in slot. A first screw is installed in the first threaded hole so that the first screw extends into the second plug-in slot and abuts against the level ruler.

[0014] Optionally, the base is provided with a through hole for mounting a bearing and the inner wall surface of the through hole is provided with a support ring for supporting the bearing, the connecting part includes a connecting column connected to the inner ring of the bearing, and the outer wall surface of the connecting column is provided with a positioning ring.

[0015] Optionally, the second fixing member includes a fixedly connected limiting column, a limiting plate and a fixing frame;

[0016] The limiting column, the limiting plate and the fixing frame are all provided with a second opening for the level ruler to pass through. The limiting column is inserted into the connecting disk through the first opening, and the limiting plate is attached to the upper surface of the connecting disk. A second threaded hole is provided on the fixing frame, and a second screw is installed in the second threaded hole so that the second screw extends into the second opening and abuts the level ruler.

[0017] Optionally, a ball pulley is further provided on the lower surface of the limiting plate, and the number of the ball pulleys is multiple, and the multiple ball pulleys are arranged at intervals along the circumference of the limiting plate.

[0018] Optionally, the connecting plate is provided with an annular groove corresponding to the ball pulley.

[0019] Optionally, an embedding groove for placing a horizontal bubble is provided on the connecting plate.

[0020] Through the above technical solution, when it is necessary to use a level rod to measure the height difference between two points on the ground, the auxiliary tooling for stably supporting the level rod can be placed in advance to the position to be measured, and then one end of the level rod is placed vertically on the base and fixed to the level rod by the first fixing member. The other end of the level rod passes through the connecting plate through the first opening provided on the connecting plate and extends to the top of the connecting plate, so that the level rod is fixed by the second fixing member. Different parts of the level rod are fixed respectively by the first fixing member and the second fixing member, which ensures the stability of the level rod in the vertical direction, effectively reduces the vibration, deviation or tilt caused by the weight of the level rod itself or external factors (such as wind), thereby significantly improving the measurement accuracy.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 1 is a schematic diagram of the overall structure of an auxiliary tool for using a leveling staff provided in an exemplary embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of a connecting segment and a connecting disk provided in an exemplary embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of a second fixing member provided in an exemplary embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of a base and a first fixing member installed on the base provided in an exemplary embodiment of the present disclosure;

[0027] Figure 5 is a schematic structural diagram of a base and a connecting member provided in an exemplary embodiment of the present disclosure;

[0028] Figure 6 yes Figure 5 A partial enlarged schematic diagram of position A in the middle;

[0029] Figure 7 is a schematic structural diagram of a connector provided in an exemplary embodiment of the present disclosure;

[0030] Figure 8is a schematic structural diagram of a carrier provided in an exemplary embodiment of the present disclosure;

[0031] Figure 9 Schematic diagram of the structure of a base provided in an exemplary embodiment of the present disclosure.

[0032] Description of Reference Numerals

[0033] 1-base; 101-first fixing member; 102-through hole; 103-support ring; 1011-connecting member; 10111-connecting portion; 10112-first plug-in slot; 10113-limiting slot; 10114-positioning ring; 1012-carrying member; 10121-first plug-in column; 10122-limiting block; 10123-first threaded hole; 10124-second plug-in slot; 2-connecting member Connecting rod; 201-support section; 202-connecting section; 3-connecting plate; 301-first opening; 302-second fixing member; 3021-limiting column; 30211-second opening; 3022-limiting plate; 3023-fixing frame; 30231-second threaded hole; 303-annular groove; 304-embedded groove; 4-limiting plate; 5-nut; 6-first screw; 7-second screw; 8-ball pulley. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] In the specific embodiment provided in the present disclosure, an auxiliary tool for using a leveling rod is provided, referring to Figures 1 to 9As shown, the leveling rod uses an auxiliary tooling, including: a base 1, a connecting rod 2 and a connecting disk 3, wherein the base 1 has a first fixing part 101 for fixing the leveling rod; the connecting rod 2 is fixedly connected to the edge of the upper surface of the base 1 and there are multiple connecting rods 2, and the multiple connecting rods 2 are evenly spaced along the circumference of the base 1; the connecting disk 3 is connected to the end of the connecting rod 2 away from the base 1 and has a first opening 301 for passing the leveling rod and a second fixing part 302 for fixing the leveling rod, and the connecting rod 2 is arranged between the base 1 and the connecting disk 3, so that the connecting disk 3 is located above the base 1, and then the leveling rod is fixed from different positions of the leveling rod with the help of the first fixing part 101 installed on the base 1 and the second fixing part 302 installed on the connecting disk 3, to ensure that the leveling rod can be stably and firmly set vertically, thereby improving measurement accuracy.

[0037] Through the above technical solution, when it is necessary to use a level rod to measure the height difference between two points on the ground, the auxiliary tooling for stably supporting the level rod can be placed in advance to the position to be measured, and then one end of the level rod is placed vertically on the base 1 and fixed to the level rod by the first fixing member 101. The other end of the level rod passes through the connecting disk 3 through the first opening 301 provided on the connecting disk 3 and extends to the top of the connecting disk 3, so that the level rod is fixed by the second fixing member 302. Different parts of the level rod are fixed respectively by the first fixing member 101 and the second fixing member 302, which ensures the stability of the level rod in the vertical direction, effectively reduces the vibration, offset or tilt caused by the weight of the level rod itself or external factors (such as wind), thereby significantly improving the measurement accuracy.

[0038] In some embodiments not shown in the figures, the first fixing member 101 includes a mounting seat, which is arranged on the upper surface of the base 1, and the mounting seat is provided with a mounting hole for inserting the level rod, wherein a rubber block is provided on the inner wall of the mounting hole, and one end of the level rod will be in close contact with the rubber block when inserted into the mounting hole, and the level rod is fixed by squeezing the rubber block; the second fixing member 302 includes a fastener installed on the connecting plate 3, wherein the fastener includes two connecting seats located on opposite sides of the first opening 301, and each connecting seat is provided with a screw hole for connecting a tightening bolt, and the tightening bolt extends out of the connecting seat through the screw hole and then abuts against the side wall of the level rod, and in order to ensure that the tightening bolt can abut against the level rod more firmly, a rubber pad layer can also be provided, and the rubber pad layer increases the friction between the tightening bolt and the level rod to improve the connection strength.

[0039] refer to Figure 1 As shown, the first direction is the X direction and the second direction is the Y direction.

[0040] In some embodiments, reference Figure 1 and Figure 2As shown, the connecting rod 2 includes a fixed support section 201 and a connecting section 202, wherein the support section 201 extends along a first direction, and the connecting section 202 extends along a vertical second direction, the first direction and the second direction form an angle, and the end of the support section 201 away from the connecting section 202 is fixedly connected to the edge of the upper surface of the base 1, and the connecting plate 3 is connected to the connecting section 202. A plurality of connecting rods 2 are arranged between the base 1 and the connecting plate 3, and the plurality of connecting rods 2 together form a support frame for supporting the connecting plate 3. The support section 201 is designed to extend along the first direction. Its function is that the outer contour of the support frame formed by the plurality of connecting rods 2 is a frustum shape, so that the auxiliary tooling composed of the base 1, the connecting rod 2 and the connecting plate 3 can provide better support for the level ruler, ensuring that it can be placed vertically stably.

[0041] In some embodiments, reference Figure 1 and Figure 2 As shown, in order to improve the versatility of auxiliary tooling for the use of level rods, and to ensure that level rods of different heights can be stably fixed vertically, the height between the connecting plate 3 and the base 1 is adjustable, that is, the connecting section 202 includes a threaded rod, and the connecting plate 3 is provided with a through hole for the threaded rod to pass through, and a nut 5 for supporting the connecting plate 3 is threadedly connected to the threaded rod, and the nut 5 is located below the connecting plate 3. The nut 5 is used to support the connecting plate 3, and the position of the nut 5 on the connecting section 202 is changed by rotating the nut 5, so that the height between the connecting plate 3 and the base 1 can be adjusted.

[0042] In some embodiments, reference Figure 1 and Figure 2 As shown, the connection portion 10111 of the support section 201 and the connection section 202 is fixedly connected to a limiting plate 4, and the limiting plate 4 is located below the connecting plate 3. The limiting plate 4 is used to limit the connecting plate 3. When there is no need to adjust the height between the connecting plate 3 and the base 1, the connecting plate 3 can be placed on the limiting plate 4 (the lower surface of the connecting plate 3 is attached to the upper surface of the limiting plate 4) and fixed by a nut 5 (the nut 5 is located on the upper surface of the connecting plate 3 at this time).

[0043] In some embodiments not shown in the figures, the connecting section 202 is a cylinder with a smooth outer wall, and the spring is sleeved on the connecting section 202. One end of the spring abuts the limiting plate 4, and the other end abuts the lower surface of the connecting plate 3. The upper surface of the connecting plate 3 is provided with a base, and a screw hole is provided on the base. The tightening screw extends toward the connecting section 202 through the screw hole. At the same time, in order to improve the connection strength between the tightening screw and the connecting section 202, an abutment groove can be provided on the outer wall surface of the connecting section 202. When the connecting plate 3 is limited by the tightening screw, the end of the tightening screw facing away from the base extends into the abutment groove and abuts against the bottom surface of the abutment groove.

[0044] In some embodiments, reference Figures 4 to 9As shown, the first fixing member 101 includes a connecting member 1011 and a supporting member 1012, wherein one end of the connecting member 1011 is provided with a connecting portion 10111 for connecting to the base 1, and the other end is provided with a first plugging groove 10112 for plugging into the supporting member 1012, and a limiting groove 10113 is provided on the inner wall surface of the first plugging groove 10112, and one end of the supporting member 1012 is provided with a first plugging column 10121 corresponding to the first plugging groove 10112, and a limiting block 10122 corresponding to the limiting groove 10113 is provided on the outer wall surface of the first plugging column 10121, and the connecting member 1011 and the supporting member 1012 are connected by plugging, and the limiting groove 10113 is provided. Combined with the limit block 10122, relative rotation between the connecting member 1011 and the supporting member 1012 can be effectively avoided, ensuring the connection stability between the connecting member 1011 and the supporting member 1012. The other end of the supporting member 1012 is provided with a second plug-in slot 10124 for plugging in a water level rod and a first threaded hole 10123 connected to the second plug-in slot 10124. A first screw rod 6 is installed in the first threaded hole 10123, so that the first screw rod 6 extends into the second plug-in slot 10124 and abuts against the water level rod. When the water level rod is inserted into the second plug-in slot 10124, the first screw rod 6 extends into the second plug-in slot 10124 through the first threaded hole 10123 and abuts against the water level rod.

[0045] In some embodiments, in order to improve the versatility of the auxiliary tooling for the use of the leveling rod, the connecting member 1011 and the supporting member 1012 are designed to be detachable structures for levels of different widths, that is, one end of the supporting member 1012 is provided with a first plug-in column 10121 corresponding to the first plug-in slot 10112, and the outer wall surface of the first plug-in column 10121 is provided with a limit block 10122 corresponding to the limit slot 10113, and the other end is provided with a second plug-in slot 10124 for plugging the water level rod. In order to enable the supporting member 1012 to better fix the water level rod, during the production process of the supporting member 1012, the dimensions of the supporting member 1012 can be designed to be mutually adapted according to levels of different sizes (the depth and width of the second plug-in slot 10124; the diameter of the first threaded hole 10123, etc. ), thereby producing supporting parts 1012 of multiple sizes. Before performing the measurement operation, it is sufficient to select the corresponding supporting part 1012 according to the level rod used. In the present disclosure, the connecting part 1011 and the supporting part 1012 are connected by plugging, which has a high degree of flexibility and allows personnel to quickly replace the supporting part 1012; it should be noted that the supporting parts 1012 of multiple sizes are only designed for the dimensions of the second plug-in slot 10124 and the first threaded hole 10123, and do not involve the dimension design of the first plug-in column 10121 and the limit block 10122. The supporting parts 1012 of multiple sizes all use a standard size of the first plug-in column 10121 and the limit block 10122, so that supporting parts 1012 of different sizes can be used in conjunction with the same connecting part 1011.

[0046] In some embodiments not shown in the figures, the connection portion 10111 includes a flange, that is, a plurality of screw holes are provided on the base 1, and the flange is fixed to the base 1 by screws, thereby fixing the connection member 1011 to the base 1.

[0047] In some embodiments, reference Figures 4 to 9 As shown, in order to enable surveyors to use the level rod more conveniently, the level rod can be rotatably connected to the base 1 after installation, that is, the base 1 is provided with a through hole 102 for installing the bearing and the inner wall surface of the through hole 102 is provided with a support ring 103 for supporting the bearing, the connecting part 10111 includes a connecting column connected to the inner ring of the bearing, and a positioning ring 10114 is provided on the outer wall surface of the connecting column. The outer wall surface of the outer ring of the bearing fits tightly with the through hole 102, and at the same time, a support ring 103 for supporting the bearing is provided on the side wall surface of the through hole 102. The outer wall surface of the connecting column fits tightly with the inner ring of the bearing and when the connecting column is inserted into the inner ring of the bearing, the positioning ring 10114 can play a positioning role, that is, when the lower surface of the positioning ring 10114 fits the upper surface of the inner ring of the bearing, it indicates that the connecting column is inserted into place.

[0048] In some embodiments, reference Figures 1 to 3 As shown, the bearing can drive the level rod connected to the carrier 1012 to rotate synchronously, so that the scale surface of the level rod is better oriented to the level instrument during the measurement process, which is convenient for reading the corresponding value through the level instrument. On this basis, the second fixing member 302 is rotatably connected to the connecting disk 3, wherein the second fixing member 302 includes a fixed limit column 3021, a limit plate 3022 and a fixed frame 3023, and the limit column 3021, the limit plate 3022 and the fixed frame 3023 are all provided with a second limit rod for passing through. Two openings 30211, the level rod can be extended to the top of the connecting disk 3 through the first opening 301 and the second opening 30211. When the limiting column 3021 is inserted into the connecting disk 3 through the first opening 301, the limiting plate 3022 plays a limiting role. The limiting plate 3022 is attached to the upper surface of the connecting disk 3. The second threaded hole 30231 provided on the fixing frame 3023 can be connected to the second screw rod 7. The second screw rod 7 extends to the inside of the second opening 30211 through the second threaded hole and abuts against the fixed level rod to ensure that the level rod can be fixed vertically.

[0049] In some embodiments, reference Figures 1 to 3 As shown, when the level ruler needs to be rotated so that its scale surface is better oriented towards the level instrument, in order to make the limit plate 3022 rotate more smoothly, a ball pulley 8 can be further provided on the lower surface of the limit plate 3022, and the number of ball pulleys 8 is multiple, and the multiple ball pulleys 8 are arranged at intervals along the circumference of the limit plate 3022. At the same time, an annular groove 303 corresponding to the ball pulley 8 is provided on the connecting plate 3, and the ball pulley 8 is always located in the annular groove 303 and rolls, thereby improving the stability of the limit plate 3022 during rotation.

[0050] In some embodiments, reference Figure 2 As shown, when the level ruler is in use, it is necessary to place it vertically and keep it in a vertical state. Therefore, an embedding groove 304 for placing a horizontal bubble is provided on the connecting plate 3. By observing whether the horizontal bubble is in the middle position, it is determined whether the connecting plate 3 is horizontal, thereby ensuring that the level ruler can be placed vertically. Similarly, an embedding groove 304 can also be opened on the base 1. When installing the level ruler, the horizontal bubble is observed to determine whether the base 1 and the connecting plate 3 are placed horizontally at the location to be measured.

[0051] Instructions for use of auxiliary tooling: Before measurement, first evaluate the size of the level rod to be used, and then select the carrier 1012 of appropriate size, align the first connecting column 10121 and the limit block 10122 with the first plug-in slot 10112 and the limit slot 10113, connect the connecting member 1011 and the carrier 1012 together by plugging, and then install the level rod. During installation, it can be installed from top to bottom, that is, lift the level rod vertically, and insert one end of the level rod from the first opening 301 and the second opening 30211 downward into the second plug-in slot 10124 of the carrier 1012, and then adjust the placement of the level rod so that it is perpendicular to the base 1. After the adjustment is completed, use the first screw 6 and the second screw 7 to abut and fix from different parts of the level rod so that the level rod can be placed stably vertically.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present invention, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0053] The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A leveling rod auxiliary tool, characterized in that: include: A base (1) having a first fixing member (101) for fixing a level rod; Connecting rods (2) are fixedly connected to the edge of the upper surface of the base (1) and are in plurality, with the plurality of connecting rods (2) being distributed at equal intervals along the circumference of the base (1); A connecting plate (3) is connected to the end of the connecting rod (2) facing away from the base (1) and has a first opening (301) for the level rod to pass through and a second fixing member (302) for fixing the level rod.

2. The auxiliary tool for using a leveling staff according to claim 1, characterized in that: The connecting rod (2) comprises a fixedly connected supporting section (201) and a connecting section (202); The supporting section (201) extends along a first direction, and the connecting section (202) extends along a vertical second direction, the first direction and the second direction form an angle, and one end of the supporting section (201) facing away from the connecting section (202) is fixedly connected to the edge of the upper surface of the base (1), and the connecting plate (3) is connected to the connecting section (202).

3. The auxiliary tool for using a leveling staff according to claim 2, characterized in that: The connection portion (10111) between the support section (201) and the connection section (202) is fixedly connected to a limiting disk (4), and the limiting disk (4) is located below the connection disk (3).

4. The auxiliary tool for using a leveling staff according to claim 2, characterized in that: The connecting section (202) comprises a threaded rod, the connecting plate (3) is provided with a through hole for the threaded rod to pass through, the threaded rod is threadedly connected to a nut (5) for supporting the connecting plate (3), and the nut (5) is located below the connecting plate (3).

5. The auxiliary tool for using a leveling staff according to claim 1, characterized in that: The first fixing member (101) comprises a connecting member (1011) and a bearing member (1012); One end of the connecting member (1011) is provided with a connecting portion (10111) for connecting to the base (1), and the other end is provided with a first plug-in slot (10112) for plugging into the supporting member (1012), and a limiting slot (10113) is provided on the inner wall surface of the first plug-in slot (10112), and one end of the supporting member (1012) is provided with a first plug-in column (10121) corresponding to the first plug-in slot (10112), and the outer wall surface of the first plug-in column (10121) is provided with a first plug-in column (10121) corresponding to the first plug-in slot (10112). A limiting block (10122) corresponding to the limiting groove (10113) is provided on the wall surface, and the other end of the supporting member (1012) is provided with a second plug-in groove (10124) for plugging the level ruler and a first threaded hole (10123) connected to the second plug-in groove (10124), and a first screw rod (6) is installed in the first threaded hole (10123) so that the first screw rod (6) extends into the second plug-in groove (10124) and abuts against the level ruler.

6. The auxiliary tool for using a leveling staff according to claim 5, characterized in that: The base (1) is provided with a through hole (102) for mounting a bearing, and the inner wall surface of the through hole (102) is provided with a support ring (103) for supporting the bearing, and the connecting portion (10111) includes a connecting column connected to the inner ring of the bearing, and the outer wall surface of the connecting column is provided with a positioning ring (10114).

7. The auxiliary tool for using a leveling staff according to claim 5, characterized in that: The second fixing member (302) comprises a fixedly connected limiting column (3021), a limiting plate (3022) and a fixing frame (3023); The limiting column (3021), the limiting plate (3022) and the fixing frame (3023) are all provided with a second opening (30211) for the level ruler to pass through; the limiting column (3021) is plugged into the connecting disk (3) through the first opening (301); the limiting plate (3022) is attached to the upper surface of the connecting disk (3); the fixing frame (3023) is provided with a second threaded hole (30231); a second screw rod (7) is installed in the second threaded hole (30231), so that the second screw rod (7) extends into the second opening (30211) and abuts against the level ruler.

8. The auxiliary tool for using a leveling staff according to claim 7, characterized in that: The lower surface of the limiting plate (3022) is further provided with a ball pulley (8), and the number of the ball pulleys (8) is multiple, and the multiple ball pulleys (8) are arranged at intervals along the circumference of the limiting plate (3022).

9. The auxiliary tool for using a leveling staff according to claim 8, characterized in that: The connecting disk (3) is provided with an annular groove (303) corresponding to the ball pulley (8).

10. The auxiliary tool for using a leveling staff according to claim 1, characterized in that: The connecting plate (3) is provided with an embedding groove (304) for accommodating horizontal bubbles.

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