A measuring device for detecting an aperture

Abstract

The utility model belongs to the pile hole diameter measurement technical field, concretely is a kind of measuring device of detection hole diameter, including: positioning support, can be fixed on the orifice of pile hole;Middle shaft rod, is arranged in the center of positioning support, can be lifted on positioning support;Telescopic link, fixed in the state of central symmetry in the bottom end of middle shaft rod;Contact piece, fixedly installed in the movable end of telescopic link, for contacting the inner wall of pile hole;Damping piece, set in telescopic link, for fixing the length of telescopic link in real time.This application can accurately measure the minimum hole diameter size of whole hole depth, solve the technical problem of inaccurate measurement caused by the fact that the hole diameter size of orifice position can only be measured in prior art, and the hole diameter size below orifice cannot be detected.

Description

Technical Field

[0001] This utility model relates to the field of pile hole diameter measurement technology; specifically, this utility model relates to a measuring device for detecting hole diameter. Background Technology

[0002] Currently, the method for measuring the diameter of pile holes is to have workers directly measure the diameter at the hole opening with a steel ruler. This method can only measure the diameter at the hole opening and cannot detect the diameter below the hole opening. Not only is it impossible to measure the diameter of the entire cross-section from the bottom to the top of the hole, but since it requires manual measurement with a steel ruler at the hole opening, there is also a safety risk of personnel falling. Utility Model Content

[0003] In view of this, the present invention provides a measuring device for detecting aperture, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0004] To achieve the aforementioned objective, this utility model provides a measuring device for detecting borehole diameter, comprising: a positioning bracket, which can be fixed on the opening of a pile hole; a central shaft, which passes through the center of the positioning bracket and can be raised and lowered on the positioning bracket; a telescopic rod, which is fixedly fixed at the bottom end of the central shaft in a centrally symmetrical manner; a contact element, which is fixedly installed at the movable end of the telescopic rod and is used to contact the inner wall of the pile hole; and a damping element, which is disposed in the telescopic rod and is used to fix the length of the telescopic rod in real time.

[0005] Preferably, the positioning bracket includes a central plate and adjustable-length support arms. The central plate has a central hole in the middle for the central shaft to pass through. Multiple support arms are equidistantly installed on the circumferential surface of the central plate, and the outer ends of the support arms are used to fix and support the opening of the pile hole.

[0006] Preferably, the central shaft comprises multiple rods, and adjacent rods are detachably connected.

[0007] Preferably, the contact element is a "boat"-shaped plate structure.

[0008] Preferably, the contact element is a rod-shaped structure rotatably mounted on the end of the telescopic rod.

[0009] Preferably, the telescopic rod includes a fixed sleeve, a movable rod, and a scale line. The inner end of the fixed sleeve is fixedly connected to the central shaft, the inner end of the movable rod is inserted into the fixed sleeve, the contact element is fixed to the outer end of the movable rod, the damping element is disposed between the fixed sleeve and the movable rod, and the scale line is disposed on the surface of the movable rod.

[0010] Preferably, the damping component includes a damping sleeve, a damping plate, and an elastic telescopic rod. The damping sleeve is fixedly sleeved on the inner end of the movable rod. Multiple damping plates are centrally symmetrically arranged inside the fixed sleeve. The elastic telescopic rod is installed on the fixed sleeve and connected to the damping plate. The elastic force of the elastic telescopic rod causes the damping plate to abut against the surface of the damping sleeve.

[0011] Preferably, the system also includes a winding wheel and a steel wire rope. One winding wheel is rotatably mounted on each side of the top of the positioning bracket. The steel wire rope is wound around the winding wheel, and the bottom end of the steel wire rope passes downward through the positioning bracket and connects to the bottom end of the central shaft.

[0012] Preferably, it further includes a helical groove and a slide bar, the helical groove being disposed on the surface of the central shaft, the slide bar being mounted on the positioning bracket, and the slide bar being slidably engaged with the helical groove.

[0013] Preferably, the system further includes a turntable, a guide groove, and a guide rod. The slide rod is radially slidably mounted on the positioning bracket, the turntable is rotatably mounted on the positioning bracket, the guide groove is disposed on the turntable, the guide rod is slidably engaged with the guide groove, the guide rod is vertically fixed on the slide rod, the winding wheel is mounted on the upper surface of the turntable, the wire rope passes through the turntable, and the turntable rotates clockwise or counterclockwise. The guide groove, through the guide rod, allows the slide rod to insert into or withdraw from the spiral groove.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: This application can accurately measure the minimum diameter of the entire hole depth, realizing the full cross-sectional diameter measurement from the bottom to the top of the hole. Compared with the existing technology of directly measuring the inner diameter of the hole, it greatly improves the measurement accuracy and effectively alleviates the safety hazards of people standing at the hole opening for measurement. Attached Figure Description

[0015] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This utility model Figure 1 Enlarged view at point B in the middle; Figure 4 This utility model Figure 1 A schematic diagram of partial splitting in the middle; Figure 5 This is a schematic diagram of the fixed sleeve after being cut open in the telescopic rod of this utility model.

[0016] Reference numerals in the attached diagram: 1-Positioning bracket; 1.1-Central disc; 1.2-Support arm; 1.3-Support plate; 2-Central shaft; 2.1-Rod body; 3-Telescopic rod; 3.1-Fixed sleeve; 3.2-Moving rod; 3.3-Scale line; 4-Contact element; 5-Damping element; 5.1-Damping sleeve; 5.2-Damping plate; 5.3-Elastic telescopic rod; 6-Winding wheel; 7-Wire rope; 8-Helical groove; 9-Slide rod; 10-Turntable; 11-Guide groove; 12-Guide rod; 13-Rotating sleeve; 14-Limiting groove; 15-Limiting rod. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] like Figures 1 to 5 As shown, a measuring device for detecting a pile hole according to this application includes a positioning bracket 1, a central shaft 2, a telescopic rod 3, a contact element 4, and a damping element 5. The positioning bracket 1 can be fixed on the opening of the pile hole, thus fixing the measuring device as a whole on the pile hole. The central shaft 2 passes through the center of the positioning bracket 1 and can be raised and lowered on the positioning bracket 1. The central shaft 2 can be inserted downward into the pile hole to the bottom of the pile hole.

[0019] The telescopic rod 3 is fixed to the bottom end of the central axis rod 2 in a centrally symmetrical manner. The contact element 4 is fixedly installed on the movable end of the telescopic rod 3 and is used to contact the inner wall of the pile hole. As the central axis rod 2 is inserted downward into the pile hole, the contact element 4 slides downward through contact with the inner wall of the pile hole. When it contacts the area where the hole diameter becomes smaller, the telescopic rod 3 retracts and shortens, thereby enabling the measurement of the minimum hole diameter inside the pile hole. Compared with the existing technology of directly measuring the inner diameter of the pile hole opening, this method can greatly improve the measurement accuracy.

[0020] The damping element 5 is installed inside the telescopic rod 3 to fix the length of the telescopic rod 3 in real time. As the contact element 4 moves downward along the inner wall of the pile hole, the damping element 5 can stabilize the position of the contact element 4, ensuring that the telescopic rod 3 does not extend or retract arbitrarily, and ensuring that the contact element 4 always contacts the inner wall of the pile hole, thereby ensuring measurement accuracy.

[0021] In one embodiment of the contact element 4, it is configured as a "boat"-shaped plate structure, with both the upper and lower ends of the contact element 4 bent inward (not shown). In another embodiment of the contact element 4, it is configured as a rod-shaped structure rotatably mounted on the end of the telescopic rod 3.

[0022] The telescopic rod 3 of this application includes a fixed sleeve 3.1, a movable rod 3.2, and a scale line 3.3. The inner end of the fixed sleeve 3.1 is fixedly connected to the central shaft 2, the inner end of the movable rod 3.2 is inserted into the fixed sleeve 3.1, the contact element 4 is fixed to the outer end of the movable rod 3.2, the damping element 5 is disposed between the fixed sleeve 3.1 and the movable rod 3.2, and the scale line 3.3 is disposed on the surface of the movable rod 3.2. After the central shaft 2 is pulled out of the pile hole, the minimum inner diameter of the pile hole can be directly read by observing the exposed scale line 3.3 on all the telescopic rods 3.

[0023] The damping component 5 of this application includes a damping sleeve 5.1, a damping plate 5.2, and an elastic telescopic rod 5.3. The damping sleeve 5.1 is fixedly sleeved on the inner end of the movable rod 3.2. Multiple damping plates 5.2 are centrally symmetrically arranged inside the fixed sleeve 3.1. The elastic telescopic rod 5.3 is installed on the fixed sleeve 3.1 and is connected to the damping plate 5.2. The elastic force of the elastic telescopic rod 5.3 causes the damping plate 5.2 to abut against the surface of the damping sleeve 5.1.

[0024] The elastic telescopic rod 5.3 applies an inward force to the damping plate 5.2, causing the damping plate 5.2 to abut against the damping sleeve 5.1. Thus, the friction between the damping plate 5.2 and the damping sleeve 5.1 generates a damping force that fixes the length of the telescopic rod 3. The damping sleeve 5.1 and the damping plate 5.2 can be made of rubber.

[0025] The measuring device for detecting the borehole diameter in this application also includes a winding wheel 6 and a steel wire rope 7. One winding wheel 6 is rotatably mounted on each side of the top of the positioning bracket 1. The steel wire rope 7 is wound around the winding wheel 6, with its bottom end passing downwards through the positioning bracket 1 and connecting to the bottom end of the central shaft 2. By directly rotating the winding wheel 6, the steel wire rope 7 can be released or wound, allowing the contact element 4 to be lowered and raised along the height direction within the pile hole. This is more convenient, time-saving, and labor-saving compared to manually lowering or raising the central shaft 2.

[0026] The measuring device for detecting borehole diameter in this application further includes a spiral groove 8 and a sliding rod 9. The spiral groove 8 is disposed on the surface of the central shaft 2, and the sliding rod 9 is mounted on the positioning bracket 1, with the sliding rod 9 slidingly engaged with the spiral groove 8. During the lowering or raising of the central shaft 2, the spiral groove 8, in conjunction with the sliding rod 9, can drive the central shaft 2 to rotate. The central shaft 2 drives the contact element 4 to rotate, so that the contact element 4 makes all-round contact with the inner wall surface of the pile hole in the circumferential direction, thereby improving the measurement accuracy of the minimum borehole diameter.

[0027] Specifically, in this embodiment, when the travel distance of the contact 4 in the circumferential direction exceeds the distance between two adjacent contact 4, the falling height of the central shaft 2 is less than the contact length of the contact 4 in the height direction with the inner wall of the pile hole. This allows the contact 4 to make full contact with the inner wall of the pile hole, avoiding omissions and thus improving the measurement accuracy of the minimum hole diameter.

[0028] The measuring device for detecting aperture in this application further includes a turntable 10, a guide groove 11, and a guide rod 12. A slide rod 9 is radially slidably mounted on a positioning bracket 1. The turntable 10 is rotatably mounted on the positioning bracket 1. The guide groove 11 is disposed on the turntable 10. The guide rod 12 is slidably engaged with the guide groove 11. The guide rod 12 is vertically fixed on the slide rod 9. A winding wheel 6 is mounted on the upper surface of the turntable 10. A wire rope 7 passes through the turntable 10. When the turntable 10 is rotated clockwise or counterclockwise, the guide groove 11, through the guide rod 12, causes the slide rod 9 to insert into or withdraw from the spiral groove 8.

[0029] Before lowering the contact 4 into the pile hole, rotate the turntable 10 clockwise so that the sliding rod 9 is inserted into the spiral groove 8. Before lifting the contact 4, rotate the turntable 10 counterclockwise so that the sliding rod 9 is pulled out of the spiral groove 8. Thus, during the lifting of the contact 4, the central shaft 2 will not rotate relative to the contact 4, and the central shaft 2 and the contact 4 can be lifted more quickly and smoothly.

[0030] Specifically, a rotating sleeve 13 is rotatably mounted on the bottom end of the central shaft 2, and the bottom end of the wire rope 7 is fixedly connected to the rotating sleeve 13. This ensures that during the rotation of the central shaft 2, the relative rotation between the rotating sleeve 13 and the central shaft 2 effectively reduces the circumferential pulling on the wire rope 7, thus ensuring the effective rotation of the central shaft 2.

[0031] In the measuring device for detecting borehole diameter of this application, the positioning bracket 1 includes a central plate 1.1 and an adjustable-length support arm 1.2. The central plate 1.1 has a central hole in the middle for the central shaft 2 to pass through. Multiple support arms 1.2 are installed at equal intervals on the circumferential surface of the central plate 1.1. The outer end of the support arm 1.2 is used to fix and support the borehole opening of the pile hole.

[0032] An "L"-shaped support plate 1.3 is provided at the outer end of the support wall. The transverse part of the support plate 1.3 supports the top of the pile hole, and the longitudinal part of the support plate 1.3 abuts against the inner wall of the pile hole. The support arm 1.2 includes a threaded rod and a threaded sleeve. The threaded rod and the threaded sleeve are threadedly engaged. The inner end of the threaded sleeve is fixed to the central plate 1.1. The support plate 1.3 is fixed to the outer end of the threaded rod.

[0033] When setting up the turntable 10, the turntable 10 is rotatably mounted at the center of the central disk 1.1. The central disk 1.1 is provided with a limiting groove 14, and a limiting rod 15 is slidably installed in the limiting groove 14, and the limiting rod 15 is fixedly connected to the turntable 10. The steel wire rope 7 passes through the limiting rod 15. When the guide rod 12 is located at both ends of the guide groove 11, the limiting rod 15 is located at both ends of the limiting groove 14. Through the cooperation of the limiting rod 15 and the limiting groove 14, on the one hand, a channel is provided for the steel wire rope 7 to follow the rotation of the turntable 10, and on the other hand, the forward and reverse rotation angles of the turntable 10 are limited, improving the stability of the slide rod 9 when it is inserted into or withdrawn from the spiral groove 8.

[0034] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A measuring device for detecting aperture, characterized in that, include: The positioning bracket (1) can be fixed on the opening of the pile hole; The central shaft (2) passes through the center of the positioning bracket (1) and can move up and down on the positioning bracket (1); The telescopic rod (3) is fixed at the bottom end of the central shaft rod (2) in a centrally symmetrical state; The contact element (4) is fixedly installed at the movable end of the telescopic rod (3) and is used to contact the inner wall of the pile hole; A damping element (5) is installed inside the telescopic rod (3) to fix the length of the telescopic rod (3) in real time.

2. The measuring device for detecting aperture as described in claim 1, characterized in that, The positioning bracket (1) includes a central plate (1.1) and an adjustable-length support arm (1.2). The central plate (1.1) has a central hole in the middle for the central shaft (2) to pass through. Multiple support arms (1.2) are installed at equal intervals on the circumferential surface of the central plate (1.1). The outer end of the support arm (1.2) is used to fix and support the opening of the pile hole.

3. The measuring device for detecting aperture as described in claim 1, characterized in that, The central shaft (2) includes multiple rods (2.1), and adjacent rods (2.1) are detachably connected.

4. The measuring device for detecting aperture as described in claim 1, characterized in that, The contact element (4) is a "boat" shaped plate structure.

5. The measuring device for detecting aperture as described in claim 1, characterized in that, The contact element (4) is a rod-shaped structure that is rotatably mounted on the end of the telescopic rod (3).

6. The measuring device for detecting aperture as described in claim 1, characterized in that, The telescopic rod (3) includes a fixed sleeve (3.1), a movable rod (3.2), and a scale line (3.3). The inner end of the fixed sleeve (3.1) is fixed to the central shaft (2). The inner end of the movable rod (3.2) is inserted into the fixed sleeve (3.1). The contact member (4) is fixed to the outer end of the movable rod (3.2). The damping member (5) is disposed between the fixed sleeve (3.1) and the movable rod (3.2). The scale line (3.3) is disposed on the surface of the movable rod (3.2).

7. The measuring device for detecting aperture as described in claim 6, characterized in that, The damping component (5) includes a damping sleeve (5.1), a damping plate (5.2), and an elastic telescopic rod (5.3). The damping sleeve (5.1) is fixedly sleeved on the inner end of the movable rod (3.2). Multiple damping plates (5.2) are arranged in a centrally symmetrical state inside the fixed sleeve (3.1). The elastic telescopic rod (5.3) is installed on the fixed sleeve (3.1) and is connected to the damping plate (5.2). The elastic force of the elastic telescopic rod (5.3) causes the damping plate (5.2) to abut against the surface of the damping sleeve (5.1).

8. The measuring device for detecting aperture as described in claim 1, characterized in that, It also includes a winding wheel (6) and a steel wire rope (7). One winding wheel (6) is rotatably installed on each side of the top of the positioning bracket (1). The steel wire rope (7) is wound on the winding wheel (6), and the bottom end of the steel wire rope (7) passes downward through the positioning bracket (1) and is connected to the bottom end of the central shaft (2).

9. The measuring device for detecting aperture as described in claim 8, characterized in that, It also includes a spiral groove (8) and a slide bar (9), the spiral groove (8) being disposed on the surface of the central shaft (2), the slide bar (9) being mounted on the positioning bracket (1), and the slide bar (9) slidingly engaging with the spiral groove (8).

10. The measuring device for detecting aperture as described in claim 9, characterized in that, It also includes a turntable (10), a guide groove (11) and a guide rod (12). The slide rod (9) is radially slidably mounted on the positioning bracket (1). The turntable (10) is rotatably mounted on the positioning bracket (1). The guide groove (11) is set on the turntable (10). The guide rod (12) is slidably engaged with the guide groove (11). The guide rod (12) is vertically fixed on the slide rod (9). The winding wheel (6) is mounted on the upper surface of the turntable (10). The wire rope (7) passes through the turntable (10). The turntable (10) rotates clockwise or counterclockwise. The guide groove (11) allows the slide rod (9) to be inserted into or withdrawn from the spiral groove (8) through the guide rod (12).

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