Automatic reversing mechanism for automatic inclinometer

Abstract

An automatic reversing mechanism for an automatic inclinometer includes inclinometer guide wheels at the top and bottom of the inclinometer rod. The inclinometer rod slides along vertical guide grooves within the inclinometer tube to the bottom for measurement. A follower tube is mounted on the inclinometer tube, and a helical reversing sleeve is mounted on the follower tube. The inclinometer tube, follower tube, and helical reversing sleeve are coaxial and have the same inner diameter. The outer wall of the inclinometer tube is fixedly connected to and coaxial with a positioning steel pipe. The follower tube and helical reversing sleeve are both inside the positioning steel pipe, and the follower tube rotates freely within it. Vertical guide grooves, arranged at 180-degree angles, are provided on the inner walls of the helical reversing tube, follower tube, and inclinometer tube. The outer wall of the helical reversing sleeve has a structure that converts linear motion into 180-degree rotation. This invention uses guide grooves to solve the automatic reversing problem during measurement. The structure is simple and reliable, eliminating complex circuit control. Direction conversion is automatically completed by the lifting action of the inclinometer rod during measurement, resulting in extremely high reliability. When used with an automatic inclinometer, it can automatically complete forward and reverse measurements.

Description

Technical Field

[0001] This invention belongs to the field of inclinometers and relates to an automatic reversing mechanism for an automatic inclinometer. Background Technology

[0002] In traditional inclinometer measurements, two measurements are often required within the same inclinometer tube. This is because, for various reasons, the measured value of the inclinometer rod within the perfectly vertical tube being measured is not zero. This non-zero value is the zero-point error. The zero-point error can be eliminated by adding two sets of values ​​with the same but opposite signs obtained from forward and reverse measurements. In practice, the inclinometer rod is rotated 180 degrees during the two measurements. This method eliminates the zero-point error of the inclinometer rod itself, thus determining the absolute offset of the measured hole. The operation method is to remove the inclinometer rod from the inclinometer tube after the first measurement, rotate it 180 degrees to reverse the direction of the higher wheel to the original direction of the lower wheel, and then perform a second measurement. Similarly, when the inclinometer process is upgraded to automatic measurement, the same operation is required to eliminate the zero-point error. However, automatic inclinometers are unattended during operation, and the measurement direction cannot be changed manually. This necessitates an automatic commutator to solve the commutation problem. Existing products use motor-driven commutation, which requires complex control circuitry. The most critical problem is that the harsh field environment makes the circuitry and motor prone to damage. Summary of the Invention

[0003] 1. The technical problem to be solved:

[0004] Existing reversing mechanisms require manual switching, while automatic switching requires complex control circuits. Moreover, the harsh environment in the field makes the circuits and motors prone to damage.

[0005] 2. Technical Solution:

[0006] To address the above problems, an automatic reversing mechanism for an automatic inclinometer is provided, comprising an inclinometer rod and an inclinometer tube. The inclinometer rod has guide wheels at both its upper and lower ends. The inclinometer rod slides along a vertical guide groove inside the inclinometer tube to the bottom for measurement. A follower tube is mounted on the inclinometer tube, and a spiral reversing sleeve is mounted on the follower tube. The inclinometer tube, follower tube, and spiral reversing sleeve are coaxial and have the same inner diameter. The outer wall of the inclinometer tube is fixedly connected to and coaxial with a positioning steel pipe. The follower tube and spiral reversing sleeve are both inside the positioning steel pipe, and the follower tube rotates freely within the positioning steel pipe. Vertical guide grooves, arranged vertically at 180-degree intervals, are provided on the inner walls of the spiral reversing sleeve, follower tube, and inclinometer tube. The spiral reversing sleeve has a structure that converts linear motion into 180-degree rotation.

[0007] The structure that converts linear motion into a 180-degree rotation is as follows: the inner wall of the spiral reversing sleeve is provided with a measuring rod limiting post, and the outer wall of the spiral reversing sleeve is engraved with two kinds of guide grooves, two vertical guide grooves and two spiral guide grooves. The two vertical guide grooves are distributed in opposite directions at 180 degrees. The first spiral guide groove and the second spiral guide groove are respectively connected to the top and bottom ends of the two vertical guide grooves. The upper part of the positioning steel pipe is provided with two guide posts distributed in opposite directions at 180 degrees. The guide posts can slide in the vertical guide grooves and spiral guide grooves on the outer wall of the spiral reversing sleeve.

[0008] The structure that converts linear motion into 180-degree rotation is as follows: the inner wall of the spiral reversing sleeve is provided with two spiral guide grooves, the two vertical guide grooves are distributed in opposite directions at 180 degrees, and the first spiral guide groove and the second spiral guide groove are respectively connected to the top and bottom of the two vertical guide grooves.

[0009] A spring inside the guide post pushes the front end of the guide post to press against the bottom of the outer guide groove of the spiral reversing sleeve. When the vertical guide groove and the first spiral guide groove intersect at the top, the depth of the first spiral guide groove is greater than that of the vertical guide groove. When the vertical guide groove and the second spiral guide groove intersect at the bottom, the depth of the vertical guide groove is greater than that of the second spiral guide groove.

[0010] The follower tube is formed by cutting a section of a clinometer tube.

[0011] The spiral reversing sleeve is made of aluminum alloy.

[0012] The positioning steel pipe and the inclinometer tube are locked together with screws.

[0013] 3. Beneficial effects:

[0014] This invention uses a guide groove to solve the automatic reversal during the measurement process. The structure is simple and reliable, and it eliminates the need for complex circuit control. It automatically completes the direction change by means of the lifting action of the inclinometer rod during the measurement process, and has extremely high reliability. When used with an automatic inclinometer, it can automatically complete forward and reverse measurements. Attached Figure Description

[0015] Figure 1 Schematic diagram of the reversing mechanism.

[0016] Figure 2 This is a front view of the spiral reversing sleeve.

[0017] Figure 3 This is a top view of the spiral reversing sleeve.

[0018] Figure 4 This is a side view of the spiral reversing sleeve.

[0019] Explanation of reference numerals in the attached drawings: 1. Inclinometer lifting rope; 2. Positioning steel pipe; 3. Inclinometer; 4. First guide post; 5. Second guide post; 6. Inclinometer limiting post; 7. Inclinometer high wheel; 8. Spiral reversing sleeve; 9. Follower tube; 10. Inclinometer tube; 11. Vertical guide groove; 12. First spiral guide groove; 13. Second spiral guide groove; 14. Upper limit point of guide post; 15. Lower limit point of guide post; 16. Inclinometer wheel groove on the inner wall of the first spiral reversing sleeve; 17. Inclinometer wheel groove on the inner wall of the second spiral reversing sleeve. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 As shown, an automatic reversing mechanism for an automatic inclinometer includes an inclinometer rod 3 and an inclinometer tube 10. The inclinometer rod 3 has guide wheels at its top and bottom. The inclinometer rod 3 slides to the bottom of the inclinometer tube 10 via the guide wheels on a vertical guide groove 11. A follower tube 9 is provided on the inclinometer tube 10, and a spiral reversing sleeve 8 is provided on the follower tube. The inclinometer tube 10, follower tube 9, and spiral reversing sleeve 8 are coaxial and have the same inner diameter. The inclinometer tube 10 is fixedly connected to and coaxial with a positioning steel pipe 2. The follower tube 9 and spiral reversing sleeve 8 are both inside the positioning steel pipe 2. The follower tube 9 can rotate freely within the positioning steel pipe 2. Vertical guide grooves 11, arranged vertically at 180 degrees, are provided on the inner walls of the spiral reversing sleeve 8, follower tube 9, and inclinometer tube 10. The spiral reversing sleeve 8 has a structure that converts linear motion into 180-degree rotation.

[0022] Example 1

[0023] like Figure 2 and Figure 4 As shown, the spiral reversing sleeve 8 is a cylindrical aluminum alloy component, such as... Figure 3 The inner wall of the device has two vertical guide grooves for the sliding of the inclinometer rod guide wheel, namely: the first inclinometer wheel groove 16 and the second inclinometer wheel groove 17 on the inner wall of the first helical reversing sleeve. They are distributed vertically at 180 degrees on the inner wall of the circular tube, with the same structure as the inclinometer tube 10. The purpose is to guide the inclinometer rod 3 to slide up and down on its inner wall without generating relative rotation. The outer wall of the helical reversing sleeve 8 is engraved with two types of guide grooves: two vertical guide grooves 11 and two helical guide grooves. The two vertical guide grooves are distributed opposite each other at 180 degrees. The first helical guide groove 12 and the second helical guide groove 13 are respectively connected to the top and bottom ends of the two vertical guide grooves 11.

[0024] In one embodiment, when the vertical guide groove 11 and the helical guide groove intersect at the top, the depth of the helical guide groove is greater than that of the vertical guide groove; when the vertical guide groove and the helical guide groove intersect at the bottom, the depth of the vertical guide groove is greater than that of the helical guide groove. This depth difference design results in the following: when the first guide post 4 and the second guide post 5 are at the upper limit point 14, and the helical reversing sleeve 8 moves upward, the first guide post 4 and the second guide post 5 can only move along the helical groove. When they reach the lower limit point 15, the helical reversing sleeve 8 completes a 180-degree rotation, thereby driving the internal inclinometer rod 3 to also complete a 180-degree reversal. Conversely, when the first guide post 4 and the second guide post 5 are at the lower limit point 15, and the helical reversing sleeve 8 moves downward, because the vertical guide groove 11 is deeper, the first guide post 4 and the second guide post 5 can only move along the vertical guide groove 11, and the helical reversing sleeve 8 can only move downward and cannot rotate. In other words, each up-and-down reciprocating movement of the helical reversing sleeve 8 will drive the inclinometer rod to rotate 180 degrees to complete the reversal.

[0025] The reversing process of the inclinometer rod: The inclinometer rod measurement is completed inside the inclinometer tube 10. After the measurement is completed, the inclinometer rod 3 rises under the traction of the lifting rope 1. When the inclinometer rod high wheel 7 at the top of the inclinometer rod enters the spiral reversing sleeve 8, the two lower inclinometer rod guide wheels have already entered the follower tube 9. The follower tube 9 can rotate freely inside the positioning steel pipe 2. When the inclinometer rod 3 continues to rise inside the spiral reversing sleeve 8, the wheel hits the limit post 6. Then the spiral reversing sleeve 8 is driven by the inclinometer rod 3 to move upward synchronously. The spiral reversing sleeve 8 then drives the inclinometer rod 3 to rotate 180 degrees under the guidance of the first guide post 4 and the second guide post 5. The inclinometer rod 3 drives the follower tube 9 to rotate 180 degrees as well, preparing for the next measurement. Each measurement starts from the top and descends and then returns to the top, completing the forward and reverse measurement twice. This process is consistent with manual measurement.

[0026] In one embodiment, the positioning steel pipe 2 and the inclinometer tube 10 are locked together with screws to prevent slippage, thus ensuring that the positioning steel pipe 2 and the pre-embedded inclinometer tube 10 do not rotate when their internal components rotate.

[0027] In one embodiment, the inner wall of the positioning steel pipe 2 has two guide posts, a first guide post 4 and a second guide post 5. Springs inside the first and second guide posts 4 and 5 push their front ends to adhere tightly to the bottom of the outer guide groove of the spiral reversing sleeve 8, preventing them from leaving the groove bottom due to changes in groove depth. The spiral reversing sleeve 8 is made of stainless steel to ensure its weight can overcome the friction of the guide posts, thus allowing it to smoothly follow the descent of the inclinometer rod 3. The follower tube 9 is formed by cutting the inclinometer tube; mass production can reduce costs.

[0028] Example 2

[0029] The structure that converts linear motion into a 180-degree rotation is as follows: the inner wall of the spiral reversing sleeve 8 is provided with two spiral guide grooves, and the two vertical guide grooves 11 are distributed in opposite directions at 180 degrees. The first spiral guide groove 12 and the second spiral guide groove 13 are respectively connected to the top and bottom of the two vertical guide grooves 11.

[0030] The spiral reversing sleeve 8 has two guide grooves engraved on the outer wall of the tube. The spiral reversing sleeve 8 is fixed and the inclinometer rod 3 rises. Its high and low wheels rise spirally in the guide groove to complete the 180-degree reversal. The working principle is the same as that of Example 1.

[0031] This invention can be used not only in unattended automatic inclinometer systems, but also in the reversing measurement of traditional manual inclinometers.

Claims

1. An automatic reversing mechanism for an automatic inclinometer, comprising an inclinometer rod (3) and an inclinometer tube (10), wherein the inclinometer rod (3) is provided with inclinometer rod guide wheels at both the top and bottom, and the inclinometer rod (3) slides to the bottom of the vertical guide groove (11) inside the inclinometer tube (10) via the inclinometer rod guide wheels to perform measurement, characterized in that: The inclinometer tube (10) is provided with a follower tube (9), and the follower tube is provided with a spiral reversing sleeve (8). The inclinometer tube (10), the follower tube (9), and the spiral reversing sleeve (8) are coaxial and have the same inner diameter. The outer wall of the inclinometer tube (10) and the positioning steel pipe (2) are fixedly connected and coaxial. The follower tube (9) and the spiral reversing sleeve (8) are both inside the positioning steel pipe (2). The follower tube (9) can rotate freely inside the positioning steel pipe (2). The inner walls of the spiral reversing sleeve (8), the follower tube (9), and the inclinometer tube (10) are all provided with vertical guide grooves distributed vertically at 180 degrees. The spiral reversing sleeve (8) is provided with a structure that converts linear motion into 180-degree rotation. The structure that converts linear motion into 180-degree rotation is as follows: the inner wall of the spiral reversing sleeve (8) is provided with a measuring... The inclined rod limiting post (6) has two kinds of guide grooves engraved on the outer wall of the spiral reversing sleeve (8): two vertical guide grooves (11) and two spiral guide grooves. The two vertical guide grooves (11) are distributed in opposite directions at 180 degrees. The first spiral guide groove (12) and the second spiral guide groove (13) are respectively connected to the top and bottom of the two vertical guide grooves. The upper part of the positioning steel pipe (2) is provided with two guide posts distributed in opposite directions at 180 degrees. The guide posts can slide in the vertical guide grooves (11) and spiral guide grooves on the outer wall of the spiral reversing sleeve (8). When the vertical guide groove (11) and the first spiral guide groove (12) intersect at the top, the depth of the first spiral guide groove (12) is greater than that of the vertical guide groove. When the vertical guide groove and the second spiral guide groove (13) intersect at the bottom, the depth of the vertical guide groove is greater than that of the second spiral guide groove (13).

2. The automatic reversing mechanism of an automatic inclinometer as described in claim 1, characterized in that: A spring inside the guide post pushes the front end of the guide post to fit tightly against the bottom of the outer guide groove of the spiral reversing sleeve (8).

3. The automatic reversing mechanism of the automatic inclinometer as described in claim 1 or 2, characterized in that: The follower tube (9) is formed by cutting off the inclinometer tube (10).

4. The automatic reversing mechanism of the automatic inclinometer as described in claim 1 or 2, characterized in that: The spiral reversing sleeve (8) is made of aluminum alloy.

5. The automatic reversing mechanism of the automatic inclinometer as described in claim 1 or 2, characterized in that: The positioning steel pipe (2) and the inclinometer pipe (10) are locked together with screws.

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