CN219368730U - Tower ruler - Google Patents

Abstract

The utility model discloses a tower ruler, which comprises a mounting table, at least two supporting feet, a round level device and a ruler body, wherein the mounting table is provided with a placement surface and a mounting surface which are oppositely arranged, the placement surface is provided with a clamping device for clamping the ruler body, each supporting foot comprises a supporting end and a connecting end, the connecting end of each supporting foot is rotationally connected with the mounting surface, the round level device is arranged on the mounting table, and the round level device is used for detecting an included angle between the ruler body and a horizontal plane. According to the technical scheme, in the using process of the tower ruler, the measuring error of the tower ruler is reduced, and the accuracy of measuring data is improved.

Description

Tower ruler

Technical Field

The utility model relates to the technical field of surveying and mapping instruments, in particular to a tower ruler.

Background

The slide rule is one of the leveling rod, is used in precision leveling operation, and is made of wood, and the common leveling rod is large in mass, limited in length (generally 2 m) and inconvenient to carry during measurement. The tower ruler made of light high-strength materials such as aluminum alloy is convenient to withdraw in use, the single-time elevation measurement range is greatly improved, the length is generally 5m, and the contracted shape is also convenient to carry.

When the tower ruler is operated, the tower ruler needs to be kept upright to observe and read, the upright tower ruler mainly uses an artificial upright ruler, and the artificial upright ruler can incline in the front-back direction and the left-right direction of the tower ruler, so that measurement errors can occur when the height is measured.

Disclosure of Invention

The utility model mainly aims to provide a tower ruler, which aims to reduce the measurement error of the tower ruler and improve the accuracy of measurement data.

In order to achieve the above purpose, the utility model provides a tower ruler, which comprises a mounting table, at least two supporting feet, a round leveling device and a ruler body; wherein, the liquid crystal display device comprises a liquid crystal display device,

the mounting table is provided with a placing surface and a mounting surface which are oppositely arranged, and the placing surface is provided with a clamping device for clamping the ruler body;

each supporting leg comprises a supporting end and a connecting end, and the connecting end of each supporting leg is rotationally connected with the mounting surface;

the round level is arranged on the mounting table and is used for detecting an included angle between the ruler body and the horizontal plane.

In an embodiment of the present utility model, the clamping device includes a first clamping plate, a second clamping plate, and an adjusting rod, where the first clamping plate and the second clamping plate are disposed on the placement surface at opposite intervals, the adjusting rod is in threaded connection with the second clamping plate, and the adjusting rod can move towards a direction approaching to or away from the first clamping plate relative to the second clamping plate;

the ruler body is arranged on the placing surface and located between the first clamping plate and the second clamping plate, one side of the ruler body is abutted to the surface, facing the second clamping plate, of the first clamping plate, and the other opposite side of the ruler body is abutted to one end, adjacent to the first clamping plate, of the adjusting rod.

In an embodiment of the utility model, the adjusting rod includes a propping section, a threaded section and a stress section which are sequentially arranged, the threaded section is in threaded connection with the second clamping plate, one end of the propping section is connected with one end of the threaded section, which is close to the first clamping plate, and one end of the stress section is connected with one end of the threaded section, which is far away from the first clamping plate, and the other end of the stress section is arranged along the radial extension of the threaded section.

In an embodiment of the utility model, an elastic member is disposed at one end of the adjusting rod adjacent to the first clamping plate, the elastic member is capable of deforming along an axial direction of the adjusting rod, and one end of the elastic member away from the adjusting rod is used for abutting against the ruler body.

In an embodiment of the present utility model, the supporting leg includes a first connection section, a second connection section, and a locking member, where one end of the first connection section is rotatably connected to the mounting surface, the other end of the first connection section extends in a direction away from the mounting surface, the first connection section is further provided with a plurality of positioning stations arranged along an extending direction of the first connection section, the second connection section is sleeved on the first connection section from one end of the first connection section away from the mounting surface, and the locking member is matched with one of the plurality of positioning stations to fixedly connect the second connection section with the first connection section.

In an embodiment of the present utility model, a plurality of threaded holes are concavely formed along the outer peripheral wall of the first connecting section, the plurality of threaded holes are arranged along the extending direction of the first connecting section, and each threaded hole forms the positioning station; the periphery wall of second linkage segment runs through and is provided with the through-hole of stepping down, the retaining member passes the through-hole of stepping down with in a plurality of the screw hole with the screw hole threaded connection of stepping down the through-hole counterpoint.

In an embodiment of the utility model, the tower ruler further comprises at least two protecting sleeves, one end of each protecting sleeve is concavely provided with a splicing hole spliced and matched with the supporting end of the supporting leg, and the other end of each protecting sleeve is arranged in a conical shape.

In an embodiment of the utility model, the mounting surface is convexly provided with limiting protrusions which are oppositely arranged, the tower ruler further comprises a connecting shaft, the connecting shaft is connected with the two limiting protrusions and spans the two limiting protrusions, and the connecting shaft is rotatably connected with the connecting end of each supporting leg.

In an embodiment of the present utility model, the number of the supporting legs is three, a connection end of each supporting leg is provided with a hinge ball, the installation surface is correspondingly provided with three hinge seats, the three hinge seats are arranged in a triangular array, and each hinge seat is hinged with the corresponding hinge ball on the supporting leg.

In an embodiment of the present utility model, the mounting table further has a side plane connecting the mounting surface and the placement surface, the side plane and the mounting surface are disposed perpendicular to each other, the side plane is provided with a first magnetic member, and the circular collimator is provided with a second magnetic member magnetically attracted to the first magnetic member.

According to the technical scheme, the tower ruler is composed of the installation table, at least two supporting feet, the round leveling device and the ruler body, the installation table is provided with the placement surface and the installation surface which are oppositely arranged, the placement surface is provided with the clamping device for clamping the ruler body, each supporting foot comprises the supporting end and the connecting end, the connecting end of each supporting foot is rotationally connected with the installation surface, the round leveling device is arranged on the installation table and is used for detecting an included angle between the ruler body and the horizontal plane, therefore, the stability of the tower ruler is kept by the supporting feet in the using process of the tower ruler, the vertical angle of the tower ruler is calibrated by the round leveling device, the measuring error of the tower ruler is reduced, and the accuracy of measured data is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of an embodiment of a turret according to the present utility model;

FIG. 2 is a schematic top view of the structure of the adjusting lever in the turret of FIG. 1;

fig. 3 is a schematic top view of the structure of the mounting table in the turret of fig. 1.

Reference numerals illustrate:

1. a tower ruler; 10. a mounting table; 11. placing a surface; 12. a mounting surface; 13. a clamping device; 131. a first clamping plate; 132. a second clamping plate; 133. an adjusting rod; 1331. a propping section; 1332. a threaded section; 1333. a force-bearing section; 14. a side plane; 20. supporting feet; 21. a support end; 22. a connection end; 23. a first connection section; 24. a second connection section; 25. a locking member; 30. a ruler body; 40. a round level; 50. and a protective sleeve.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The tower ruler is suitable for engineering topography measurement of railways, highways, cities, mines, water conservancy, farmland infrastructure, national defense and the like. When measuring operation, the slide staff need keep perpendicular with ground, is suitable for the level gauge and observes the scale on the slide staff from the distance, needs operating personnel to hold up the chi body and maintains the stability of slide staff, and operating personnel need hold up the slide staff for a long time, and the energy consumption to operating personnel is very big, and the slide staff can appear rocking in the measurement process, influences measurement data's accuracy, needs repeated measurement to have increased measuring time. If personnel can not place the slide rule on the measurement point completely vertically during measurement, larger measurement errors or errors of readings can be caused, measurement work can be influenced, and even potential safety hazards can exist.

The utility model provides a tower ruler 1. Referring to fig. 1 to 3, the tower ruler 1 comprises a mounting table 10, at least two supporting feet 20, a circular collimator 40 and a ruler body 30; wherein, the mounting table 10 is provided with a placing surface 11 and a mounting surface 12 which are oppositely arranged, and the placing surface 11 is provided with a clamping device 13 for clamping the ruler body 30; each supporting leg 20 comprises a supporting end 21 and a connecting end 22, and the connecting end 22 of each supporting leg 20 is rotatably connected with the mounting surface 12; the circular level 40 is disposed on the mounting table 10, and the circular level 40 is used for detecting an included angle between the ruler 30 and a horizontal plane.

The telescopic leveling rod is adopted as the tower ruler 1, the ruler body 30 is provided with a multi-section telescopic joint structure, the joint of each section of telescopic joint is provided with an elastic bayonet and a bayonet matched with the elastic buckle, and the two sides of the telescopic joint are also provided with strip-shaped clamping grooves for ensuring the accurate alignment of each section of telescopic joint. When the telescopic joint of the ruler body 30 is pulled out, the telescopic joint is sequentially pulled out along with the strip-shaped clamping grooves, when the telescopic joint of the ruler body 30 is pulled out to a limiting position, the elastic buckle can automatically pop out through the bayonet, so that each telescopic joint is limited to move up and down, the strip-shaped clamping grooves on the side surfaces of the telescopic joint limit relative displacement between the telescopic joints, and the ruler body 30 is prevented from shaking and bending deformation. When the telescopic joint of the ruler body 30 needs to be retracted, the elastic buckle is pressed to enter the telescopic joint of the ruler body 30, and each section of telescopic joint returns to the original position along the strip-shaped clamping groove in sequence and is mutually engaged and blocked. The outer surface of the ruler body 30 is covered with fluorescent materials, the ruler surface is carved with corresponding scales, and measurement is not affected under the condition of insufficient light.

Specifically, the tower ruler 1 is further provided with a mounting table 10 for connecting the ruler body 30 with the supporting legs 20, the supporting legs 20 are mounted on the mounting surface 12 of the mounting table 10, the back surface of the mounting surface 12 is a placing surface 11, and the placing surface 11 of the mounting table 10 is provided with a clamping device 13 for clamping the ruler body 30. The clamping device 13 comprises a first clamping plate 131, a second clamping plate 132 and an adjusting rod 133, wherein the first clamping plate 131 and the second clamping plate 132 are oppositely arranged on the placing surface 11 at intervals, the adjusting rod 133 is in threaded connection with the second clamping plate 132, the adjusting rod 133 can move towards the direction close to or far away from the first clamping plate 131 relative to the second clamping plate 132, the ruler body 30 is arranged on the placing surface 11 and located between the first clamping plate 131 and the second clamping plate 132, one side of the ruler body 30 is abutted against the surface of the first clamping plate 131 towards the second clamping plate 132, and the other opposite side of the ruler body 30 is abutted against one end of the adjusting rod 133 adjacent to the first clamping plate 131. Clamping device 13 thereby fixed rule body 30 fixed mounting is on mount table 10 from both sides, the back butt of the relative scale surface of rule body 30 places face 11, first grip block 131 is fixed on placing face 11 in clamping device 13, set up the through-hole in the second grip block 132 and be used for adjusting pole 133 and pass through, first grip block 131 of rule body 30 one side butt, opposite side butt adjusts pole 133, adjust pole 133 and can move about, and a simple structure, convenient dismouting of rule body 30, portable and later maintenance, and clamping device 13 can adapt to the different sizes that use rule body 30 in the measurement operation, the rule body 30 of adaptation is more, the service scenario of slide rule 1 is richer.

In order to further simplify manual disassembly and assembly operations and facilitate the front-back movement of the adjusting rod 133, the adjusting rod 133 comprises a propping section 1331, a threaded section 1332 and a stress section 1333 which are sequentially arranged, the threaded section 1332 is in threaded connection with the second clamping plate 132, one end of the propping section 1331 is connected with one end, close to the first clamping plate 131, of the threaded section 1332, one end of the stress section 1333 is connected with one end, far away from the first clamping plate 131, of the threaded section 1332, and the other end of the stress section is arranged along the radial extension of the threaded section 1332. In this embodiment, the propping section 1331 and the stress section 1333 are both provided with threaded openings for fixedly connecting with the threaded section 1332, the adjusting rod 133 with the sectional design is convenient to disassemble and maintain, the stress section 1333 is a handle convenient to rotate, an operator rotates the stress section 1333 to enable the threaded section 1332 to advance and retreat in the through hole of the second clamping plate 132 relative to the direction of the first clamping plate 131, the propping section 1331 is controlled to clamp and unclamp the rule body 30, when the rule body 30 needs to be disassembled, the stress section 1333 is rotated to enable the propping section 1331 to move towards the second clamping plate 132, the first clamping plate 131 and the propping section 1331 are unclamped for clamping the rule body 30, and when the rule body 30 is installed, the stress section 1333 is rotated to enable the propping section 1331 to move towards the first clamping plate 131, and the propping section 1331 clamps the rule body 30 placed on the mounting table 10 from two sides.

Further, when the measuring operation is performed, since the rule body 30 has a plurality of sections of expansion joints, the top end width of the rule body 30 is smaller than the bottom end width after the expansion operation, the rule body 30 has different widths, the elastic element is arranged at one end of the adjusting rod 133 adjacent to the first clamping plate 131 for better fitting the shape of the rule body 30, the elastic element can deform along the axial direction of the adjusting rod 133, and one end of the elastic element away from the adjusting rod 133 is used for being abutted to the rule body 30. The elastic piece can be kept close to the side surface of the ruler body 30 in the using process of the ruler body 30, the gap between the ruler body 30 and the clamping device 13 is eliminated, and errors of measured data are reduced. In the face of different measuring environments, the slide rule 1 needs to be moved frequently, the rule body 30 can shake, the elastic piece has a damping effect, the rule body 30 is stabilized, vertical displacement and left-right shake caused by moving the slide rule 1 are avoided, and accuracy of measured data is further improved.

Referring to fig. 1 again, the tower ruler 1 further includes at least two supporting legs 20, when the tower ruler 1 performs measurement operation, the tower ruler 1 keeps a vertical state with the measurement horizontal plane, the supporting ends 21 of the supporting legs 20 are abutted to the wall surface or the mountain body vertical to the measurement horizontal plane, a stable angle is formed after the supporting legs 20 are separated, and the supporting legs 20 provide supporting force for erecting the tower ruler 1, so that a manual standing ruler is not needed, labor is saved, and the error rate of measurement is reduced. In the present embodiment, the support leg 20 is made of aluminum alloy, and the support leg 20 needs to have sufficient strength and light weight. The supporting leg 20 comprises a first connecting section 23, a second connecting section 24 and a locking member 25, one end of the first connecting section 23 is rotationally connected with the mounting surface 12, the other end of the first connecting section 23 extends towards the direction far away from the mounting surface 12, the first connecting section 23 is further provided with a plurality of positioning stations distributed along the extending direction, the second connecting section 24 is sleeved on the first connecting section 23 from one end of the first connecting section 23 far away from the mounting surface 12, and the locking member 25 is matched with one of the positioning stations so as to fixedly connect the second connecting section 24 with the first connecting section 23. The first connecting section 23 and the second connecting section 24 can be used for carrying out telescopic operation, the length of the supporting leg 20 can be changed in face of different measurement scenes, multiple positioning stations provide various length selections, and when the second connecting section 24 is stretched to the required length, the locking piece 25 is locked with the positioning stations, so that the lengths of the first connecting section 23 and the second connecting section 24 are fixed, the stability of the tower ruler 1 in the measurement process is maintained, the accuracy of the measurement data of the tower ruler 1 is improved, the supporting leg 20 with the telescopic variable length can adapt to complex and variable measurement scenes, and the reduced ruler body 30 and the supporting leg 20 are convenient to carry.

In this embodiment, the peripheral wall of the first connecting section 23 is concavely provided with a plurality of threaded holes, the plurality of threaded holes are arranged along the extending direction of the first connecting section 23, each threaded hole forms a positioning station, the peripheral wall of the second connecting section 24 is penetratingly provided with a yielding through hole, and the locking member 25 penetrates through the yielding through hole to be in threaded connection with the threaded hole aligned with the yielding through hole in the plurality of threaded holes. The locking piece 25 and the positioning station in the threaded connection mode have better locking capability, the straightness of the supporting leg 20 is kept more stably, the supporting leg 20 cannot shake when the tower ruler 1 performs measurement operation, and measurement errors are reduced. In other embodiments, the mating connection between the locking member 25 and the positioning station may be in the form of a snap or latch connection, both of which may maintain the locking between the first and second connection sections 23, 24, without limitation.

In measurement work, topography is complicated changeable, and the supporting end 21 of supporting legs 20 needs firm fixing on the stationary plane in order to guarantee measuring accuracy, and thereby the wearing and tearing that can lead to supporting end 21 influence the measuring result of slide rule 1 simultaneously, and for this reason, slide rule 1 still includes two at least protective sheath 50, and the concave spliced eye that is equipped with of one end of each protective sheath 50 with the supporting end 21 grafting complex of supporting legs 20, the other end of each protective sheath 50 is coniform setting. The protective sleeve 50 further strengthens the supporting legs 20 to be fixed on fixed surfaces such as wall surfaces more firmly in the use process, so that the shaking of the tower ruler 1 is avoided, the accuracy of a measuring result is affected, one end of the protective sleeve 50, which is in contact with the fixed surface, is arranged in a conical shape with a small lower end and a large upper end, the supporting legs 20 can be stretched into the fixed surface, the stability and the reliability of the supporting legs 20 are increased, and the use of the supporting legs 20 is not limited by regions and terrains. The end of the protective sleeve 50 contacting the fixing surface cannot be too sharp to scratch a person or object easily and is not wear-resistant and easy to deform. Thus, the protective sheath 50 is cone-shaped, safer and more durable, and the cone shape is easier to manufacture.

The supporting legs 20 are rotatably connected with the mounting surface 12, the mounting surface 12 is convexly provided with limiting protrusions which are oppositely arranged, the tower ruler 1 further comprises a connecting shaft, the connecting shaft is connected with the two limiting protrusions and spans the two limiting protrusions, and the connecting shaft is rotatably connected with the connecting end 22 of each supporting leg 20. The setting of connecting axle can let supporting legs 20 have bigger activity angle in order to adapt to complicated measurement scene, and lets the condition of mutual restriction can not appear between the rotation in-process of supporting legs 20, is convenient for accomodate. The condition that the supporting legs 20 drop the connecting shaft appears in the effectual prevention supporting legs 20 of spacing arch in the use, set up the installation that runs through on the spacing arch and be used for the connecting shaft and dismouting and the maintenance of supporting legs 20, the link 22 of supporting legs 20 can have the shaft hole or the bearing that set up to supply the connecting shaft to pass, reduces the frictional force between link 22 and the connecting shaft, the rotation of supporting legs 20 in the use of being convenient for. Meanwhile, after the supporting leg 20 rotates to a proper angle, the supporting leg 20 needs to be fixed so as to maintain the vertical state of the tower ruler 1, a limiting rotating shaft needs to be arranged on the connecting end 22 so as to lock the supporting leg 20 after the angle is adjusted, a spring and a limiting piece are arranged in the limiting rotating shaft, the supporting leg 20 is rotated to apply force to the limiting rotating shaft, so that a shaft body in the rotating shaft rotates, and when the supporting leg 20 rotates to a certain angle, the limiting piece and the spring can apply pressure to the shaft body so that the supporting leg 20 is fixed at the current position, and the purpose of fixing the supporting leg 20 is achieved.

In an embodiment, the number of the supporting legs 20 is three, the connection end 22 of each supporting leg 20 is provided with a hinging ball, the mounting surface 12 is correspondingly provided with three hinging seats, the three hinging seats are arranged in a triangular array, and each hinging seat is hinged with the hinging ball on the corresponding supporting leg 20. The articulated ball of link 22 includes the bulb and with bulb integrated into one piece's body of rod, and articulated seat is spherical structure, and articulated seat is equipped with the chamber that holds that is used for placing the bulb, and bulb movable mounting holds the intracavity and slides with articulated seat cooperation, and the bulb can be in holding intracavity free rotation, adapts to the fixed surface of supporting legs 20 and forms different angles and maintain the stability of slide rule 1, thereby reduces the rocking of slide rule 1 and improves the accuracy of slide rule 1 measurement in-process.

In order to ensure that the ruler body 30 is in a vertical state relative to the measuring horizontal plane, a circular level gauge 40 is additionally arranged on the tower ruler 1 and used for detecting the included angle between the ruler body 30 and the horizontal plane. The mounting table 10 has a side plane 14 connecting the mounting surface 12 and the placement surface 11, the side plane 14 and the mounting surface 12 are disposed perpendicular to each other, the side plane 14 is provided with a first magnetic member, and the round collimator 40 is provided with a second magnetic member magnetically attracted to the first magnetic member. The circular level 40 is a closed circular glass container, the inner surface of the top cover is a sphere, diethyl ether liquid is contained in the container, a small bubble is reserved in the container, a small circle is carved in the center of the top cover, the center of the small circle is a zero point of the circular level 40, the spherical normal passing through the zero point is the axis of the circular level 40, and when the bubble of the circular level 40 is centered, the rule body 30 is vertical to the horizontal plane. In order to ensure the structural strength and magnetism of the mounting table 10, the mounting table 10 is made of a magnetic metal material such as stainless steel, the round collimator 40 is connected to the side plane 14 by adsorbing the first magnetic part through the second magnetic part, the round collimator 40 is conveniently calibrated and then additionally arranged on the mounting table 10, and the round collimator 40 is detachably and independently stored as a precise instrument, so that damage to the round collimator 40 in the transportation process is avoided.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. The utility model provides a slide rule, its characterized in that, slide rule includes mount table, two at least supporting legs, round level gauge and the chi body; wherein, the liquid crystal display device comprises a liquid crystal display device,

the mounting table is provided with a placing surface and a mounting surface which are oppositely arranged, and the placing surface is provided with a clamping device for clamping the ruler body;

each supporting leg comprises a supporting end and a connecting end, and the connecting end of each supporting leg is rotationally connected with the mounting surface;

the round level is arranged on the mounting table and is used for detecting an included angle between the ruler body and the horizontal plane.

2. The tower ruler according to claim 1, wherein the clamping device comprises a first clamping plate, a second clamping plate and an adjusting rod, the first clamping plate and the second clamping plate are arranged on the placing surface at opposite intervals, the adjusting rod is in threaded connection with the second clamping plate, and the adjusting rod can move towards a direction approaching to or away from the first clamping plate relative to the second clamping plate;

the ruler body is arranged on the placing surface and located between the first clamping plate and the second clamping plate, one side of the ruler body is abutted to the surface, facing the second clamping plate, of the first clamping plate, and the other opposite side of the ruler body is abutted to one end, adjacent to the first clamping plate, of the adjusting rod.

3. The tower ruler according to claim 2, wherein the adjusting rod comprises a propping section, a threaded section and a stressed section which are sequentially arranged, the threaded section is in threaded connection with the second clamping plate, one end of the propping section is connected with one end of the threaded section, which is close to the first clamping plate, one end of the stressed section is connected with one end of the threaded section, which is far away from the first clamping plate, and the other end of the stressed section is arranged along the radial extension of the threaded section.

4. The tower of claim 2, wherein the adjusting lever is provided with an elastic member adjacent to one end of the first clamping plate, the elastic member being deformable in an axial direction of the adjusting lever, and an end of the elastic member remote from the adjusting lever is adapted to abut against the ruler body.

5. The tower of claim 1, wherein the support leg includes a first connecting section, a second connecting section, and a locking member, one end of the first connecting section is rotatably connected to the mounting surface, the other end of the first connecting section extends away from the mounting surface, the first connecting section is further provided with a plurality of positioning stations arranged along the extending direction thereof, the second connecting section is sleeved on the first connecting section from the end of the first connecting section away from the mounting surface, and the locking member is matched with one of the plurality of positioning stations to fixedly connect the second connecting section to the first connecting section.

6. The turret of claim 5, wherein the peripheral wall of the first connecting section is recessed with a plurality of threaded bores aligned along the direction of extension of the first connecting section, each of the threaded bores defining a locating station; the periphery wall of second linkage segment runs through and is provided with the through-hole of stepping down, the retaining member passes the through-hole of stepping down with in a plurality of the screw hole with the screw hole threaded connection of stepping down the through-hole counterpoint.

7. The tower of claim 5, further comprising at least two protective sleeves, wherein one end of each protective sleeve is concavely provided with a plugging hole for plugging and matching with the supporting end of the supporting leg, and the other end of each protective sleeve is conically arranged.

8. The tower ruler according to claim 1, wherein the mounting surface is convexly provided with limiting protrusions which are oppositely arranged, the tower ruler further comprises a connecting shaft, the connecting shaft is connected with the two limiting protrusions and spans the two limiting protrusions, and the connecting shaft is rotatably connected with the connecting end of each supporting leg.

9. The tower ruler according to claim 1, wherein the number of the supporting feet is three, the connecting end of each supporting foot is provided with a hinging ball, the mounting surface is correspondingly provided with three hinging seats, the three hinging seats are arranged in a triangular array, and each hinging seat is hinged with the hinging ball on the corresponding supporting foot.

10. The tower of claim 1, wherein the mounting station further has a side plane connecting the mounting surface and the placement surface, the side plane being disposed perpendicular to the mounting surface, the side plane being provided with a first magnetic member, the circular level being provided with a second magnetic member magnetically attracted to the first magnetic member.