Umbrella rib type measuring device for underground variable cross-section hole

Abstract

The utility model relates to the technical field of measuring tools, in particular to an umbrella rib type measuring device for an underground variable cross-section hole, which comprises a circular plate and an umbrella rib expansion mechanism hinged with the outer wall of the circular plate. The outer guide mechanism is hinged to the umbrella rib expansion mechanism, the elastic automatic lifting mechanism is arranged at the top of the outer wall of the outer guide mechanism, the limiting mechanism is in threaded fit with the outer guide mechanism and acts on the elastic automatic lifting mechanism, and the positioning mechanism is in sliding fit with the outer wall of the outer guide mechanism and located below the limiting mechanism. The inner pull rod is arranged in the middle of the upper side of the circular plate; the device solves the problem that a lifting rope is easy to fall into a hole in the measurement process of an existing device, measurement trouble and delay are avoided, and the burden of personnel is relieved; the device can automatically lift the inner pull rod to drive the umbrella rib expansion mechanism to unfold, meanwhile, the device is stably fixed in the lifting process, the whole device is prevented from being pulled upwards accidentally, and the accuracy of shortening amount measurement and the accuracy of the whole measurement result are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, in particular to an umbrella-bone type measuring device for underground variable-section holes. Background Technique

[0002] Anti-floating anchor rods often adopt methods such as expanded anchor rods to increase the anti-pulling bearing capacity, that is, the anchorage section of the anchor rod is designed as an enlarged head or multi-stage variable diameter is adopted. Specifically, the expanded anchor rod is a permanent anti-floating member driven into the soil body, which is divided into two parts: the non-expanded section at the upper end and the expanded section at the end. The non-expanded section at the upper end has a long length and a small aperture, and the expanded section at the end has a short length and a large aperture. During construction, an expanded hole section with a diameter larger than the upper hole diameter is drilled in the drilled deep hole.

[0003] A measuring tool for underground variable-section holes with the patent number CN212508276U disclosed in the Chinese patent depends on the coordinated operation of the first lifting rope and the second lifting rope during the measuring operation, aiming to place the measuring tool at the bottom of the hole and drive the upper chord and the lower chord to expand outwards, so as to complete the measurement of the inner diameter and depth of the hole;

[0004] However, in the actual operation process, the above process requires the operator to coordinate the actions of the first lifting rope and the second lifting rope, and at the same time pay attention to observing the lifting length of the second lifting rope and the specific length of the first lifting rope extending into the hole, so as to obtain the required parameters, and then calculate the inner diameter of the hole. This series of operations undoubtedly increases the workload of the measuring personnel. If there is a slight mistake, it may cause the lifting rope to accidentally fall into the hole, bringing unnecessary troubles and delays to the measuring operation; more importantly, when using the second lifting rope to drive the upper chord and the lower chord to expand outwards until they abut against the inner wall of the hole, since the measuring tool is not fixed at this time, it is very easy to lift the entire measuring tool upwards under the action of the second lifting rope. This accidental displacement causes errors in the parameters of the entire tool becoming shorter, affecting the accuracy of the measurement structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide an umbrella-bone type measuring device for underground variable-section holes, which is used to solve the problems in the operation of the existing device that it is necessary to coordinate the actions of two lifting ropes and pay attention to the lengths of the lifting ropes to calculate the inner diameter of the hole, increasing the burden on the measuring personnel, being prone to errors and possibly causing the lifting ropes to fall into the hole, delaying the operation; more importantly, when the lifting ropes expand to the inner wall of the hole, the measuring tool is not fixed and is easily lifted and displaced, resulting in measurement errors and affecting the accuracy.

[0006] To achieve the above object, the utility model provides the following technical solutions: An umbrella-bone type measuring device for an underground variable cross-section hole, which includes a circular plate and an umbrella-bone expansion mechanism hinged to the outer wall of the circular plate. It also includes an outer guiding mechanism hinged to the umbrella-bone expansion mechanism, an elastic automatic lifting mechanism arranged at the top of the outer wall of the outer guiding mechanism, a limiting mechanism threadedly engaged with the outer guiding mechanism and acting on the elastic automatic lifting mechanism, a positioning mechanism slidably fitted on the outer wall of the outer guiding mechanism and located below the limiting mechanism, and an inner pull rod arranged at the middle of the upper side of the circular plate. One end of the inner pull rod passes through the outer guiding mechanism and is connected to the elastic automatic lifting mechanism.

[0007] Further, the outer guiding mechanism includes an outer cylinder, openings respectively arranged at both ends of the outer cylinder and slidably fitted with the inner pull rod, and a second scale line arranged on the outer wall of the outer cylinder.

[0008] Further, the umbrella-bone expansion mechanism includes a plurality of lower chord rods hinged to the outer wall of the circular plate and arranged at annular intervals, and upper chord rods hinged to one end of the lower chord rods. One ends of the plurality of upper chord rods are hinged to the bottom of the outer wall of the outer cylinder.

[0009] Further, the elastic automatic lifting mechanism includes a fixed ring plate arranged at the top of the outer wall of the outer cylinder, a lifting plate located above the outer cylinder and connected to one end of the inner pull rod, guiding columns connected to the lower side of the lifting plate and located on both sides of the inner pull rod respectively, a spring sleeved on the outer wall of the guiding column, and a moving ring plate slidably fitted on the outer wall of the limiting mechanism and connected to one ends of the two guiding columns. Two ends of the spring are respectively connected to the lifting plate and the fixed ring plate.

[0010] Further, a vertical plate is arranged on the outer wall of the fixed ring plate, a first scale line is arranged on the side of the vertical plate close to the lifting plate, and the lifting plate is slidably fitted with one side of the vertical plate.

[0011] Further, the limiting mechanism includes an internal threaded cylinder threadedly engaged with the outer wall of the outer cylinder, locking rings and rotating rings arranged on the outer wall of the internal threaded cylinder and spaced up and down. The locking ring is located between the fixed ring plate and the moving ring plate, the rotating ring is located below the moving ring plate, and the moving ring plate is slidably fitted on the outer wall of the internal threaded cylinder.

[0012] Further, the positioning mechanism includes a positioning ring slidably fitted on the outer wall of the outer cylinder, a plurality of mounting holes arranged on the positioning ring and spaced at annular intervals, a connecting ring arranged on the upper side of the positioning ring, two adjusting screws threadedly engaged with the connecting ring and symmetrically arranged, and an arc-shaped plate rotatably connected to one end of the adjusting screw and located inside the connecting ring. The connecting ring is sleeved on the outer wall of the outer cylinder, and the connecting ring is located below the internal threaded cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] When measuring the hole, the utility model automatically lifts the inner pull rod upward through the coordinated cooperation of the outer guiding mechanism, the elastic automatic lifting mechanism, the limiting mechanism and the positioning mechanism, synchronously drives the umbrella bone expansion mechanism to expand and abut against the inner wall of the hole, and at the same time fixes the device to the upper side of the hole; furthermore, the device solves the problem that the suspension rope is easy to fall into the hole during the operation of the existing tool, thus avoiding the unnecessary trouble and delay brought to the measurement operation, reducing the work burden of the measurement personnel. In addition, the device can automatically drive the inner pull rod to lift, so that the umbrella bone expansion mechanism realizes the expansion operation. At the same time, the device is also convenient for fixing during the lifting process, preventing the risk of accidentally pulling the whole tool upward during the lifting process, thereby improving the accuracy of obtaining the shortening amount of the tool and enhancing the accuracy of the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic sectional view of the umbrella bone type measuring device for the underground variable cross-section hole of the utility model;

[0016] Figure 2 For the utility model Figure 1 is an enlarged schematic view at A in

[0017] Figure 3 is a schematic structural view of the outer cylinder of the utility model.

[0018] In the figure: 1. Umbrella bone expansion mechanism; 2. Inner pull rod; 3. Outer guiding mechanism; 4. Elastic automatic lifting mechanism; 5. Limiting mechanism; 6. Vertical plate; 7. First scale line; 8. Fixed ring plate; 9. Guide post; 10. Spring; 11. Lifting plate; 12. Moving ring plate; 13. Circular plate; 14. Outer cylinder; 15. Opening; 16. Inner threaded cylinder; 17. Rotating ring; 18. Locking ring; 19. Connecting ring; 20. Positioning ring; 21. Mounting hole; 22. Adjusting screw; 23. Arc plate; 24. Lower chord rod; 25. Upper chord rod; 26. Second scale line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Please refer to Figures 1-3, An umbrella-bone type measuring device for underground variable cross-section holes, comprising a circular plate 13, an umbrella-bone expansion mechanism 1 hinged to the outer wall of the circular plate 13, further comprising an outer guiding mechanism 3 hinged to the umbrella-bone expansion mechanism 1, an elastic automatic lifting mechanism 4 provided at the top of the outer wall of the outer guiding mechanism 3, a limiting mechanism 5 threadedly engaged with the outer guiding mechanism 3 and acting on the elastic automatic lifting mechanism 4, a positioning mechanism slidably engaged with the outer wall of the outer guiding mechanism 3 and located below the limiting mechanism 5, and an inner pull rod 2 connected to the middle part of the upper side of the circular plate 13. One end of the inner pull rod 2 passes through the outer guiding mechanism 3 and is connected to the elastic automatic lifting mechanism 4. When measuring, first place the umbrella-bone expansion mechanism 1 at the bottom of the hole. Subsequently, slide the positioning mechanism on the outer wall of the outer guiding mechanism 3 until it fits against the upper side of the hole and is fixed. Immediately afterwards, rotate the limiting mechanism 5 upwards so that it approaches the top of the outer guiding mechanism 3. At this time, after the elastic automatic lifting mechanism 4 gets rid of the restriction of the limiting mechanism 5, it automatically drives the inner pull rod 2 to move upwards. This action causes the circular plate 13 to rise synchronously and drives the umbrella-bone expansion mechanism 1 to gradually expand outwards until it abuts against the inner wall of the hole. At this time, observe the length by which the inner pull rod 2 rises. This length is the shortening amount of the entire device during the expansion process. Subsequently, using the Pythagorean theorem, calculate the diameter of the hole. At the same time, the length by which the entire device extends into the hole is the hole depth. Furthermore, this device solves the problem that the suspension rope is prone to falling into the hole during the operation of existing tools, thereby avoiding unnecessary troubles and delays brought to the measurement operation, reducing the work burden of the measurement personnel. In addition, this device can also automatically drive the inner pull rod 2 to lift, enabling the umbrella-bone expansion mechanism 1 to perform the expansion operation. At the same time, this device is also convenient for fixing during the lifting process, preventing the risk of accidentally pulling the entire tool upwards during the lifting process, thereby improving the accuracy of obtaining the shortening amount of the tool and enhancing the accuracy of the measurement result.

[0020] The outer guiding mechanism 3 includes an outer cylinder 14, through holes 15 respectively provided at both ends of the outer cylinder 14 and slidably engaged with the inner pull rod 2, and a second scale line 26 provided on the outer wall of the outer cylinder 14. Through the two through holes 15, it is convenient for the inner pull rod 2 to pass through the outer cylinder 14 and extend to both ends of the outer cylinder 14. Through the second scale line 26, it provides convenience for observing the length by which the entire device extends into the hole.

[0021] The umbrella-bone expansion mechanism 1 includes a plurality of lower chord rods 24 annularly and spacedly hinged to the outer wall of the circular plate 13, and upper chord rods 25 hinged to one end of the lower chord rods 24. One end of the plurality of upper chord rods 25 is hinged to the bottom of the outer wall of the outer cylinder 14. When the inner pull rod 2 is lifted upwards and drives the circular plate 13 to rise, the plurality of lower chord rods 24 and the plurality of mutually hinged upper chord rods 25 approach each other, driving the umbrella-bone expansion mechanism 1 to achieve an expansion movement.

[0022] The elastic automatic lifting mechanism 4 includes a fixed ring plate 8 connected to the top of the outer wall of the outer cylinder 14, a lifting plate 11 located above the outer cylinder 14 and connected to one end of the inner pull rod 2, guide columns 9 connected to the lower side of the lifting plate 11 and located on both sides of the inner pull rod 2 respectively, springs 10 sleeved on the outer walls of the guide columns 9, and a moving ring plate 12 slidably fitted on the outer wall of the limiting mechanism 5 and connected to one end of the two guide columns 9. The two ends of the spring 10 are respectively connected to the lifting plate 11 and the fixed ring plate 8; two through holes are provided on the fixed ring plate 8, and the two through holes are provided for the two guide columns 9 to pass through the fixed ring plate 8; when the elastic automatic lifting mechanism 4 breaks free from the restriction of the limiting mechanism 5 and drives the inner pull rod 2 to perform an upward lifting action, the two springs 10 begin to stretch by virtue of their inherent elastic properties, prompting the lifting plate 11 to move upward accordingly, and at the same time driving the two guide columns 9 to rise synchronously. The upward movement of the guide columns 9 further drives the moving ring plate 12 to rise in coordination. Finally, as the lifting plate 11 rises, the inner pull rod 2 is also lifted upward.

[0023] A vertical plate 6 is provided on the outer wall of the fixed ring plate 8, and a first scale line 7 is provided on one side of the vertical plate 6 close to the lifting plate 11. The lifting plate 11 is slidably fitted with one side of the vertical plate 6; the specific position where the lifting plate 11 stops after rising is convenient to observe and judge the specific height of the upward movement of the inner pull rod 2 through the first scale line 7.

[0024] The limiting mechanism 5 includes an internal thread cylinder 16 threadedly fitted on the outer wall of the outer cylinder 14, locking rings 18 and rotating rings 17 arranged at intervals up and down on the outer wall of the internal thread cylinder 16. The locking ring 18 is located between the fixed ring plate 8 and the moving ring plate 12, and the rotating ring 17 is located below the moving ring plate 12. The moving ring plate 12 is slidably fitted on the outer wall of the internal thread cylinder 16; before driving the inner pull rod 2 to lift upward, the locking ring 18 abuts against the moving ring plate 12 to restrict the stretching of the spring 10 and the upward movement of the lifting plate 11. When it is necessary to expand the umbrella rib expansion mechanism 1 outward, hold and rotate the rotating ring 17 to drive the internal thread cylinder 16 to move upward, so that the locking ring 18 gradually moves away from the moving ring plate 12, thereby facilitating the restriction of the upward movement of the moving ring plate 12, the spring 10, and the lifting plate 11.

[0025] The positioning mechanism includes a positioning ring 20 slidably fitted on the outer wall of the outer cylinder 14, a plurality of mounting holes 21 provided on the positioning ring 20 and arranged at annular intervals, a connecting ring 19 provided above the positioning ring 20, two adjusting screws 22 threadedly fitted on the connecting ring 19 and symmetrically arranged, and an arc-shaped plate 23 rotatably connected to one end of the adjusting screw 22 and located inside the connecting ring 19. The connecting ring 19 is sleeved on the outer wall of the outer cylinder 14, and the connecting ring 19 is located below the internal thread cylinder 16. When fixing the device, move the positioning ring 20 closer to the upper side of the hole and fit it against the upper side of the hole. Then, rotate the two adjusting screws 22 to drive the two arc-shaped plates 23 to clamp and fix the outer cylinder 14. Immediately afterwards, cooperate with the mounting holes 21 through connectors such as screws to fix the positioning ring 20 to the upper side of the hole. Furthermore, the device is fixed to the upper side of the hole.

[0026] Working principle: When measuring, first place the umbrella rib expansion mechanism 1 at the bottom of the hole. Subsequently, move the positioning ring 20 closer to the upper side of the hole and fit it against the upper side of the hole. Then, rotate the two adjusting screws 22 to drive the two arc-shaped plates 23 to clamp and fix the outer cylinder 14. Immediately afterwards, cooperate with the mounting holes 21 through connectors such as screws to fix the positioning ring 20 to the upper side of the hole. Immediately afterwards, hold and rotate the rotating ring 17 to drive the internal thread cylinder 16 to move upward, so that the locking ring 18 gradually moves away from the moving ring plate 12. At this time, after the elastic automatic lifting mechanism 4 gets rid of the restriction of the limiting mechanism 5, the two springs 10 start to stretch by virtue of their inherent elastic characteristics, prompting the lifting plate 11 to move upward accordingly, and at the same time driving the two guide posts 9 to rise synchronously. The upward movement of the guide posts 9 further drives the moving ring plate 12 to rise synchronously. Finally, as the lifting plate 11 rises, the inner pull rod 2 is also lifted upward. This action prompts the circular plate 13 to rise synchronously, and the plurality of lower chord rods 24 approach the plurality of upper chord rods 25 hinged to each other, causing the umbrella rib expansion mechanism 1 to gradually expand outward until it abuts against the inner wall of the hole. At this time, through the first scale line 7, observe the specific length of the upward movement of the inner pull rod 2. This length is the shortening amount of the entire device during the expansion process. Subsequently, using the Pythagorean theorem, calculate the diameter of the hole. At the same time, the length of the entire device extending into the hole is the hole depth. Furthermore, the device solves the problem that the suspension rope is likely to fall into the hole during the operation of the existing tools, thus avoiding unnecessary troubles and delays in the measurement operation, reducing the work burden of the measurement personnel. In addition, the device can automatically drive the inner pull rod 2 to be lifted, enabling the umbrella rib expansion mechanism 1 to perform the expansion operation. At the same time, the device is also convenient for fixing during the lifting process, preventing the risk of accidentally pulling the entire tool upward during the lifting process. Furthermore, the accuracy of obtaining the shortening amount of the tool is improved, and the accuracy of the measurement result is enhanced.

[0027] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An umbrella-bone type measuring device for an underground hole with variable cross-section, comprising a circular plate (13) and an umbrella-bone expansion mechanism (1) hinged to the outer wall of the circular plate (13), characterized in that, It further includes an outer guiding mechanism (3) hinged to the umbrella rib expansion mechanism (1), an elastic automatic lifting mechanism (4) provided at the top of the outer wall of the outer guiding mechanism (3), a limiting mechanism (5) threadedly engaged with the outer guiding mechanism (3) and acting on the elastic automatic lifting mechanism (4), a positioning mechanism slidably fitted on the outer wall of the outer guiding mechanism (3) and located below the limiting mechanism (5), and an inner pull rod (2) provided at the middle of the upper side of the circular plate (13). One end of the inner pull rod (2) passes through the outer guiding mechanism (3) and is connected to the elastic automatic lifting mechanism (4).

2. The umbrella bone type measuring device for an underground variable cross-section hole according to claim 1, wherein, The outer guiding mechanism (3) includes an outer cylinder (14), openings (15) respectively provided at both ends of the outer cylinder (14) and slidably fitted with the inner pull rod (2), and a second scale line (26) provided on the outer wall of the outer cylinder (14).

3. The umbrella bone type measuring device for an underground variable cross-section hole according to claim 2, wherein, The umbrella rib expansion mechanism (1) includes a plurality of lower chord rods (24) hinged to the outer wall of the circular plate (13) and arranged at annular intervals, and upper chord rods (25) hinged to one end of the lower chord rods (24). One end of the plurality of upper chord rods (25) is hinged to the bottom of the outer wall of the outer cylinder (14).

4. The umbrella bone type measuring device for an underground variable cross-section hole according to claim 2, characterized in that, The elastic automatic lifting mechanism (4) includes a fixed ring plate (8) provided at the top of the outer wall of the outer cylinder (14), a lifting plate (11) located above the outer cylinder (14) and connected to one end of the inner pull rod (2), guiding columns (9) connected to the lower side of the lifting plate (11) and respectively located on both sides of the inner pull rod (2), a spring (10) sleeved on the outer wall of the guiding columns (9), and a moving ring plate (12) slidably fitted on the outer wall of the limiting mechanism (5) and connected to one end of the two guiding columns (9). Both ends of the spring (10) are respectively connected to the lifting plate (11) and the fixed ring plate (8).

5. The umbrella bone type measuring device for an underground variable cross-section hole according to claim 4, characterized in that, A vertical plate (6) is provided on the outer wall of the fixed ring plate (8). A first scale line (7) is provided on one side of the vertical plate (6) close to the lifting plate (11). The lifting plate (11) is slidably fitted with one side of the vertical plate (6).

6. The umbrella bone type measuring device for an underground variable cross-section hole according to claim 4, characterized in that, The limiting mechanism (5) includes an internal thread cylinder (16) threadedly engaged with the outer wall of the outer cylinder (14), locking rings (18) and rotating rings (17) provided on the outer wall of the internal thread cylinder (16) and arranged at upper and lower intervals. The locking ring (18) is located between the fixed ring plate (8) and the moving ring plate (12). The rotating ring (17) is located below the moving ring plate (12). The moving ring plate (12) is slidably fitted on the outer wall of the internal thread cylinder (16).

7. The umbrella bone type measuring device for an underground variable cross-section hole according to claim 6, characterized in that, The positioning mechanism includes a positioning ring (20) slidably fitted on the outer wall of the outer cylinder (14), a plurality of mounting holes (21) provided on the positioning ring (20) and arranged at annular intervals, a connecting ring (19) provided on the upper side of the positioning ring (20), two adjusting screws (22) symmetrically arranged and threadedly engaged with the connecting ring (19), and an arc-shaped plate (23) rotatably connected to one end of the adjusting screw (22) and located inside the connecting ring (19). The connecting ring (19) is sleeved on the outer wall of the outer cylinder (14), and the connecting ring (19) is located below the internal thread cylinder (16).

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