Improved structure of box staff

Abstract

The utility model discloses a telemeter rod improved structure which comprises a base mechanism and a main telemeter rod, a sliding groove is formed in the bottom of the main telemeter rod, the base mechanism is inserted into the sliding groove, the main telemeter rod is installed on the top of the base mechanism through the sliding groove, and the top of the main telemeter rod is rotationally connected with a locking sleeve. An auxiliary box staff is slidably connected into the locking sleeve, the auxiliary box staff is inserted into the main box staff and connected with a threaded column, and a limiting plate is fixed to the bottom of the threaded column. Compared with the prior art, by arranging the main telemeter rod and the auxiliary telemeter rod, the auxiliary telemeter rod is pulled out during use, when the auxiliary telemeter rod is nearly completely pulled out, the main telemeter rod and the auxiliary telemeter rod can be locked by rotating the locking sleeve, the device is simple in structure, the auxiliary telemeter rod can be conveniently fixed after being pulled out, and then in the slope measurement process, the auxiliary telemeter rod can be conveniently fixed. The measuring angle can be adjusted through the base mechanism, the measuring levelness can be judged through the horizontal column, and the device is simple in structure and very high in measuring accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of tower rulers, in particular to an improved structure of a tower ruler. Background Art

[0002] A tower ruler is a type of leveling ruler, also known as a box staff. Early leveling rulers were mostly made of wood, which was heavy and limited in length (usually 2m), making it inconvenient to carry when measuring. Later, with the development of technology, it was gradually made of lightweight and high-strength materials such as aluminum alloy, and adopted a tower-shaped contraction form. This design makes it easy to pull out the tower ruler when in use, greatly improving the single elevation measurement range, and the length is generally 5m. Because its shape is similar to a tower, it is often called a tower ruler.

[0003] After the traditional tower ruler is pulled out, the pulled-out ruler is fixed with a retaining spring. However, in actual use, the retaining spring takes up a large space, so the caliper will be bloated and inconvenient to use. There are certain shortcomings in its use. For this reason, we propose an improved structure of the tower ruler. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an improved structure of a tower ruler.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An improved tower scale structure includes a base mechanism and a main tower scale, wherein a slide groove is provided at the bottom of the main tower scale, the base mechanism is inserted into the interior of the slide groove, and the main tower scale is installed on the top of the base mechanism through the slide groove, the top of the main tower scale is rotatably connected to a locking sleeve, the interior of the locking sleeve is slidably connected to a secondary tower scale, the secondary tower scale is inserted into the interior of the main tower scale and connected to a threaded column, a limit plate is fixed at the bottom of the threaded column, and the limit plate is slidably connected to the inner wall of the main tower scale.

[0007] Preferably, the base mechanism comprises a base, a shell is fixed on the top of the base, a worm and a rotating shaft are rotatably connected inside the shell, and a worm wheel is fixedly sleeved on the rotating shaft.

[0008] Preferably, one end of the worm passes through the side surface of the housing and is connected to a knob, and the worm wheel and the worm are meshingly driven.

[0009] Preferably, two ends of the rotating shaft pass through two sides of the shell and are fixed to the inner wall of the slide groove.

[0010] Preferably, the surfaces of the main tower ruler and the auxiliary tower ruler are both provided with scale lines, and a horizontal column is provided at the bottom of the front side of the main tower ruler.

[0011] Preferably, the inner wall of the main tower ruler is a spline structure, and the limit plate is slidably connected to the inner wall of the main tower ruler via the spline.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a main tower scale and a sub-tower scale. When in use, the sub-tower scale is pulled out, and when the sub-tower scale is almost completely pulled out, the main tower scale and the sub-tower scale can be locked by rotating the locking sleeve. The device has a simple structure and is convenient for fixing the sub-tower scale after being pulled out. Secondly, during the slope measurement process, the measuring angle can be adjusted by the base mechanism, and the measured horizontality can be judged by the horizontal column. The device has a simple structure and the measurement accuracy is very high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an improved tower ruler structure proposed by the utility model;

[0015] Figure 2 for Figure 1 A cross-sectional view of the mid-base mechanism;

[0016] Figure 3 for Figure 1 Installation diagram of the main tower scale and auxiliary tower scale.

[0017] In the figure: 1 base mechanism, 11 base, 12 housing, 13 worm, 14 knob, 15 shaft, 16 worm wheel, 2 main tower scale, 3 slide groove, 4 locking sleeve, 5 secondary tower scale, 6 top plate, 7 threaded column, 8 limit plate, 9 horizontal column. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-3A tower ruler improved structure includes a base mechanism 1 and a main tower ruler 2. A slide groove 3 is provided at the bottom of the main tower ruler 2. The base mechanism 1 is inserted into the interior of the slide groove 3. The main tower ruler 2 is installed on the top of the base mechanism 1 through the slide groove 3. The base mechanism 1 includes a base 11. A shell 12 is fixed on the top of the base 11. A worm 13 and a rotating shaft 15 are rotatably connected inside the shell 12. A worm wheel 16 is fixedly sleeved on the rotating shaft 15. One end of the worm 13 passes through the side of the shell 12 and is connected to a knob 14. The worm wheel 16 and the worm 13 are meshed transmission. Both ends of the rotating shaft 15 pass through both sides of the shell 12 and are fixed to the inner wall of the slide groove 3. A locking sleeve 4 is rotatably connected to the top of the main tower ruler 2. A secondary tower ruler 5 is slidably connected inside the locking sleeve 4. The secondary tower ruler 5 is inserted into the main tower ruler 2 is connected with a threaded column 7, and a limit plate 8 is fixed at the bottom of the threaded column 7. The limit plate 8 is slidably connected to the inner wall of the main tower scale 2. The surfaces of the main tower scale 2 and the auxiliary tower scale 5 are provided with scale lines. A horizontal column 9 is provided at the bottom of the front of the main tower scale 2. The inner wall of the main tower scale 2 is a spline structure. The limit plate 8 is slidably connected to the inner wall of the main tower scale 2 through the spline. By setting the main tower scale and the auxiliary tower scale, the auxiliary tower scale is pulled out when in use. When the auxiliary tower scale is almost completely pulled out, the main tower scale and the auxiliary tower scale can be locked by rotating the locking sleeve. The device has a simple structure and is convenient for fixing the auxiliary tower scale after being pulled out. Secondly, during the slope measurement process, the measuring angle can be adjusted through the base mechanism, and the measured horizontality can be judged through the horizontal column. The device has a simple structure and the measurement accuracy is very high.

[0020] When in use, first place the base 11 close to the bottom of the measuring position and rotate the knob 14. The knob 14 drives the worm 13 to rotate. The worm 13 drives the shaft 15 to rotate through the meshing transmission with the worm wheel 16. The shaft 15 drives the main tower scale 2 to rotate. The main tower scale 2 drives the horizontal column 9 to rotate. The horizontal column 9 is a sealed hollow glass cylinder. The liquid ball encapsulated inside it is used to determine whether the device is in a horizontal state. After adjusting to the horizontal state, pull the auxiliary tower scale 5. The auxiliary tower scale 5 drives the threaded column 7 to slide inside the base 11. The threaded column 7 drives the limit plate 8 to slide in the spline groove on the inner wall of the base 11. When the threaded column 7 is close to the locking sleeve 4, rotate the locking sleeve 4. The locking sleeve 4 can lock the auxiliary tower scale 5 and the main tower scale 2 through the threaded transmission with the threaded column 7. The device has a simple and compact structure, is very convenient to use, and the accuracy of measurement is very convenient.

[0021] To sum up, compared with the prior art, the utility model provides a main tower scale and a sub-tower scale, and the sub-tower scale is pulled out during use. When the sub-tower scale is almost completely pulled out, the main tower scale and the sub-tower scale can be locked by rotating the locking sleeve. The device has a simple structure, which is convenient for fixing the sub-tower scale after being pulled out. Secondly, during the slope measurement process, the measuring angle can be adjusted by the base mechanism, and the measured horizontality can be judged by the horizontal column. The device has a simple structure and the measurement accuracy is very high.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An improved tower ruler structure, comprising a base mechanism (1) and a main tower ruler (2), characterized in that: The bottom of the main tower ruler (2) is provided with a slide groove (3), the base mechanism (1) is inserted into the inside of the slide groove (3), the main tower ruler (2) is installed on the top of the base mechanism (1) through the slide groove (3), the top of the main tower ruler (2) is rotatably connected with a locking sleeve (4), the inside of the locking sleeve (4) is slidably connected with a secondary tower ruler (5), the secondary tower ruler (5) is inserted into the inside of the main tower ruler (2) and is connected with a threaded column (7), the bottom of the threaded column (7) is fixed with a limit plate (8), and the limit plate (8) is slidably connected to the inner wall of the main tower ruler (2).

2. The improved structure of a tower ruler according to claim 1, characterized in that: The base mechanism (1) comprises a base (11), a shell (12) is fixed on the top of the base (11), a worm (13) and a rotating shaft (15) are rotatably connected inside the shell (12), and a worm wheel (16) is fixedly sleeved on the rotating shaft (15).

3. The improved structure of a tower ruler according to claim 2, characterized in that: One end of the worm (13) passes through the side of the housing (12) and is connected to a knob (14), and the worm wheel (16) and the worm (13) are in meshing transmission.

4. The improved structure of a tower ruler according to claim 2, characterized in that: The two ends of the rotating shaft (15) pass through the two sides of the housing (12) and are fixed to the inner wall of the sliding groove (3).

5. The improved structure of a tower ruler according to claim 1, characterized in that: The surfaces of the main tower scale (2) and the auxiliary tower scale (5) are both provided with scale marks, and the bottom of the front side of the main tower scale (2) is provided with a horizontal column (9).

6. The improved structure of a tower ruler according to claim 1, characterized in that: The inner wall of the main tower ruler (2) is a spline structure, and the limit plate (8) is slidably connected to the inner wall of the main tower ruler (2) via the spline.

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