Pore-forming depth detection device for pile foundation drilling

Abstract

The utility model provides a hole-forming depth detection device for pile foundation drilling, which comprises a measuring rope with scale values, a counter weight connected to one end part of the measuring rope, a bracket arranged above a drilling hole, a fixed pulley rotationally arranged on the bracket, and a fixed frame arranged on the bracket, the fixed pulley is arranged at one end of the measuring rope, the winding drum mechanism is rotationally arranged on the fixed frame and fixedly connected with the other end of the measuring rope, the elastic tightening mechanism is arranged on the winding drum mechanism, and the measuring rope is erected on the fixed pulley. When the heavy hammer drives the measuring rope to fall to the bottom of the formed hole towards the heavy hammer, the resilience force of the coil spring enables the winding drum mechanism not to move any more and the measuring rope is in a tensioned state, at the moment, the length of the thin rope, entering the formed hole, of the measuring rope can obtain the depth of the formed hole, the measuring result is more accurate, and the judgment mode is more visual.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering quality detection, and specifically relates to a hole depth detection device for pile foundation drilling. Background Art

[0002] A deep foundation (see figure) consisting of a pile and a pile cap connected to the top of the pile (referred to as the cap) or a single pile foundation connected by a column and a pile foundation is referred to as a pile foundation. Among them, bored piles have been widely used due to their mature construction technology, wide application range, high single pile bearing capacity, and low construction noise. The quality control of bored piles is an important part of the quality control of bored piles, and the detection of the borehole depth is also an indispensable part. Whether the measurement of the borehole depth is accurate directly affects the progress of subsequent projects.

[0003] At present, during the process of bored pile hole depth detection, surveyors usually use weight blocks and measuring ropes to measure the bored pile depth. One end of the measuring rope is fixed to the weight block. The surveyor holds the measuring rope away from one end of the weight block and slowly lowers the weight block into the borehole. The surveyor judges whether the weight block has reached the bottom of the borehole by feeling the weight of the weight block. When the weight block falls to the bottom of the borehole, the surveyor's hand will feel the tension of the weight block weakened. At this time, the length of the measuring rope entering the borehole can be used to obtain the depth of the borehole. In the above measurement method, since the measurement data is determined subjectively by the surveyor's feel and experience, it is easy to make inaccurate judgments, resulting in measurement errors, resulting in low accuracy in the measurement of bored pile depth. Summary of the invention

[0004] The utility model aims to provide a pile foundation and a pile foundation drilling hole depth detection device to solve the problems that the prior art is prone to inaccurate judgment when detecting the drilling depth, resulting in measurement errors and low accuracy of bored pile depth measurement.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A hole depth detection device for pile foundation drilling includes a measuring rope with scale values, a weight connected to one end of the measuring rope, a bracket arranged above the drill hole, a fixed pulley rotatably arranged on the bracket, a fixed frame arranged on the bracket, a reel mechanism rotatably arranged on the fixed frame and fixedly connected to the other end of the measuring rope, and a coil spring arranged on the reel mechanism, wherein the measuring rope is draped on the fixed pulley.

[0007] Preferably, the reel mechanism includes: a rotating shaft at one end passing through a side wall of the fixing frame and rotatably connected to the fixing frame, a fixed shaft at one end fixedly connected to the fixing frame and rotatably connected to the rotating shaft at the other end, a reel rotatably sleeved on the rotating shaft and fixedly connected to the rotating shaft at one end, a rotating handle connected to one end of the rotating shaft, and a braking mechanism arranged on the rotating shaft, the interior of the reel is hollow, the inner end of the coil spring is fixed to the fixed shaft, and the outer end is fixed to the inner wall of the reel.

[0008] Preferably, a through hole is provided on the drum, and one end of the measuring rope passes through the drum and is fixed to a fixing clip on the inner wall of the rotating shaft.

[0009] Preferably, the braking mechanism includes: a ratchet fixedly mounted on the rotating shaft, and a pawl elastically connected to the fixing frame and adapted to the ratchet, a sliding groove is provided on the side wall of the fixing frame, the sliding groove is slidingly connected to a slider, the pawl is elastically connected to the slider, and the slider can slide along the radial direction of the ratchet.

[0010] Preferably, the bracket includes two parallel vertical plates, a horizontal plate connected between the two vertical plates, bases respectively arranged at the bottom of the vertical plates, and a mounting frame rotatably connected to the fixed pulley, and the mounting frame and the fixed frame are both arranged at the bottom of the horizontal plate.

[0011] Preferably, it also includes a cleaning mechanism, which includes a mounting plate fixedly connected to the bracket, two fixing rods arranged parallel to each other, cleaning cylinders respectively rotatably arranged on the outer surfaces of the two fixing rods, and cleaning sponges respectively wrapped on the outer surfaces of the cleaning cylinders, and the spacing between the two cleaning cylinders is adapted to the measuring rope.

[0012] Preferably, an arc-shaped frame fitting therewith is provided on the outer surface of the opposite side of the two cleaning cylinders, and a plurality of hollow holes are evenly distributed on the arc-shaped frame.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. In the utility model, a coil spring is arranged inside the drum mechanism, so that when the weight drives the measuring rope to fall to the bottom of the hole, the rebound force of the coil spring makes the drum mechanism no longer move and the measuring rope is in a tensioned state. At this time, the length of the thin rope entering the hole can be used to obtain the depth of the drilling hole. Compared with the prior art that relies on experience and hand feeling, the measurement result of the device is more accurate and the judgment method is more intuitive.

[0015] 2. The utility model provides a fixed pulley to provide guidance and limit for the measuring rope in the process of releasing and collecting the rope, so that the measuring rope can be released and collected more stably. At the same time, the roller also supports and tensions the measuring rope, so that the measuring rope remains in a vertical state, thereby improving the detection accuracy;

[0016] 3. The utility model fixes the device on the ground by setting a bracket across the drill hole, thereby improving the stability of the device and further improving the safety of the device;

[0017] 4. The utility model provides a cleaning mechanism so that the measuring rope passes through two cleaning cylinders. The cleaning sponge on the cleaning cylinder is used to clean the sludge on the measuring rope when it is rolled up. The staff does not need to clean the measuring rope later, which effectively saves manpower and improves the flexibility and practicality of the device. At the same time, the measuring rope is clamped between the two cleaning cylinders, which can reduce the downward speed of the measuring rope and improve the accuracy of detection.

[0018] 5. The utility model provides an arc frame on the outer surface of the cleaning cylinder to fit with the cleaning cylinder. The arc frame can scrape the sludge on the surface of the cleaning cylinder. The hollow holes are provided to facilitate the discharge of sewage in the arc frame, effectively avoiding the repeated contact between the sludge area on the cleaning cylinder and the measuring rope to affect the cleaning effect.

[0019] 6. The utility model can complete the work of winding the measuring rope by rotating the reel by turning the handle, and brake and lock the reel through the braking mechanism, which is convenient for the storage of the device. After the weight falls to the bottom of the hole, the braking mechanism can prevent the reel from rotating due to accidental touch, thereby improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a hole depth detection device for pile foundation drilling;

[0022] Figure 2 It is a front view of a hole depth detection device for pile foundation drilling;

[0023] Figure 3 A schematic diagram of the disassembled structure of a drum mechanism and a fixing frame of a hole depth detection device for pile foundation drilling;

[0024] Figure 4This is a schematic diagram of the braking mechanism structure of a hole depth detection device for pile foundation drilling;

[0025] Figure 5 A schematic diagram of the structure of a cleaning cylinder of a hole depth detection device for pile foundation drilling;

[0026] Figure numerals: 1-measuring rope, 2-weight, 3-bracket, 4-fixed pulley, 5-fixed frame, 6-reel mechanism, 7-reel spring, 8-rotating shaft, 9-fixed shaft, 10-reel, 11-rotating handle, 12-brake mechanism, 13-through hole, 14-ratchet, 15-pawl, 16-slide groove, 17-slider, 18-vertical plate, 19-horizontal plate, 20-base, 21-mounting frame, 22-cleaning mechanism, 23-mounting plate, 24-fixed rod, 25-cleaning cylinder, 26-cleaning sponge, 27-arc frame, 28-hollow hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0030] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] like Figure 1 and Figure 2 As shown, a hole depth detection device for pile foundation drilling includes a measuring rope 1 with scale values, a weight 2 connected to one end of the measuring rope 1, a bracket 3 arranged above the drill hole, a fixed pulley 4 rotatably arranged on the bracket 3, a fixing frame 5 arranged on the bracket 3, a drum mechanism 6 rotatably arranged on the fixing frame 5 and fixedly connected to the other end of the measuring rope 1, and a winding spring 7 arranged on the drum mechanism 6, and the measuring rope 1 is draped on the fixed pulley 4.

[0035] It should be noted that the rebound force of the coil spring 7 is always lower than the gravity of the weight 2;

[0036] The bracket 3 is set up above the drill hole. When the weight 2 drives the measuring rope 1 to the bottom of the hole under its own gravity, the rebound force of the coil spring makes the drum mechanism stop moving and the measuring rope is in a tensioned state. At this time, the length of the thin rope entering the hole can be used to obtain the depth of the drill hole. Compared with the prior art relying on experience and feel, the measurement using this device makes the measurement result more accurate and the judgment method more intuitive. The fixed pulley provides guidance and limit for the measuring rope, so that the measuring rope can be released and retracted more stably.

[0037] like Figure 3As shown, the reel mechanism 6 includes: a rotating shaft 8 with one end passing through a side wall of the fixing frame 5 and being rotatably connected to the fixing frame 5, a fixed shaft 9 with one end fixedly connected to the fixing frame 5 and the other end rotatably connected to the rotating shaft 8, a reel 10 rotatably sleeved on the rotating shaft 8 and with one end fixedly connected to the rotating shaft 8, a rotating handle 11 connected to one end of the rotating shaft 8, and a braking mechanism 12 arranged on the rotating shaft 8, the reel 10 is hollow inside, the inner end of the coil spring 7 is fixed to the fixed shaft 9, and the outer end is fixed to the inner wall of the reel 10.

[0038] The drum 10 is provided with a through hole 13 , and one end of the measuring rope 1 passes through the drum 10 and is fixed to a fixing clip on the inner wall of the rotating shaft 8 .

[0039] Under the action of gravity of the weight 2, the measuring rope 1 is pulled out from the drum 10, thereby driving the drum 10 and the rotating shaft fixedly connected to the drum to rotate, so that the coil spring 7 fixedly connected between the drum 10 and the fixed shaft 9 is tightened. When the weight 2 falls to the bottom of the borehole, the rebound force of the coil spring 7 will apply an upward pulling force to the measuring rope 1, and under the action of the upward supporting force from the bottom of the hole, the weight 2 is in a force balance state, and the measuring rope 1 is in a tensioned state. At this time, the length of the thin rope of the measuring rope 1 entering the hole can be read to obtain the depth of the drilled hole.

[0040] like Figure 4 As shown, the braking mechanism 12 includes: a ratchet 14 fixedly sleeved on the rotating shaft 8, and a pawl 15 elastically connected to the fixing frame 5 and adapted to the ratchet 14, a sliding groove 16 is provided on the side wall of the fixing frame 5, and the sliding groove 16 is slidably connected to a slider 17, the pawl 15 is elastically connected to the slider 17, and the slider 17 can slide along the radial direction of the ratchet 14.

[0041] like Figure 1 As shown, the bracket 3 includes two parallel vertical plates 18, a horizontal plate 19 connected between the two vertical plates 18, bases 20 respectively arranged at the bottom of the vertical plates 18, and a mounting frame 21 rotatably connected to the fixed pulley 4, and the mounting frame 21 and the fixed frame 5 are both arranged at the bottom of the horizontal plate 19.

[0042] like Figure 1 As shown, it also includes a cleaning mechanism 22, which includes a fixing frame 5 fixedly connected to the bracket 3, two fixing rods 24 arranged parallel to each other, cleaning cylinders 25 respectively rotatably arranged on the outer surfaces of the two fixing rods 24, and cleaning sponges 26 respectively wrapped on the outer surfaces of the cleaning cylinders 25, and the spacing between the two cleaning cylinders 25 is adapted to the measuring rope 1.

[0043] When winding, the measuring rope passes through two cleaning cylinders. The friction between the measuring rope and the cleaning cylinder drives the cleaning cylinder to rotate and then clean the sludge on the measuring rope. There is no need for staff to clean the measuring rope later, which effectively saves manpower and improves the flexibility and practicality of the device. At the same time, the measuring rope is clamped between the two cleaning cylinders, which can reduce the downward speed of the measuring rope and improve the accuracy of detection.

[0044] like Figure 5 As shown, an arc frame 27 fitting therewith is provided on the outer surface of the opposite side of the two cleaning cylinders 25, and a plurality of hollow holes 28 are evenly distributed on the arc frame 27; the arc frame 27 can scrape the sludge on the surface of the cleaning cylinder, and the hollow holes 28 are convenient for strengthening the sewage discharge in the arc frame, which effectively avoids the sludge area on the cleaning cylinder from repeatedly contacting the measuring rope and affecting the cleaning effect.

[0045] Combine the following Figure 1-Figure 5 The specific working principle of the utility model is described as follows:

[0046] When performing depth detection, first, the entire device is erected above the drill hole through the bracket 3, and the sliding block 17 makes the pawl 15 move in the direction away from the ratchet 14, thereby making the pawl 15 disengage from the ratchet 14, releasing the lock on the rotating shaft, and the measuring rope 1 is pulled out from the drum 10 under the gravity of the weight 2 itself, thereby driving the drum 10 to rotate, so that the coil spring 7 between the drum 10 and the fixed shaft 9 is wound up, and the rebound force of the coil spring 7 is always lower than the gravity of the weight 2. When the weight 2 falls to the bottom of the drill hole, the weight 2 is in a force balance state under the action of the upward pulling force applied to the measuring rope 1 by the coil spring 7 and the upward supporting force from the bottom of the hole. state, at this time the reel 10 is no longer rotating and the measuring rope 1 is also in a tensioned state. At this time, reading the length of the thin rope of the measuring rope 1 entering the hole can obtain the depth of the drilling hole. Compared with the prior art which relies on experience and feel, the use of this device for measurement makes the measurement result more accurate and the judgment method more intuitive. After the measurement is completed, the reel 10 is driven to rotate by turning the handle 11, and the measuring rope 1 moves upward and is reeled in. The cleaning sponge 26 on the cleaning cylinder 25 cleans the sludge on the measuring rope 1. After the reeling is completed, the sliding block 17 is slid to make the pawl 15 move toward the direction of the ratchet 14, thereby completing the braking of the reel mechanism 6.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described by referring to the preferred embodiments of the utility model, those skilled in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A hole depth detection device for pile foundation drilling, characterized in that: The invention comprises a measuring rope (1) provided with scale values, a weight (2) connected to one end of the measuring rope (1), a bracket (3) arranged above a drill hole, a fixed pulley (4) rotatably arranged on the bracket (3), a fixing frame (5) arranged on the bracket (3), a reel mechanism (6) rotatably arranged on the fixing frame (5) and fixedly connected to the other end of the measuring rope (1), and a coil spring (7) arranged inside the reel mechanism (6), wherein the measuring rope (1) is laid on the fixed pulley (4).

2. A pile foundation drilling hole depth detection device according to claim 1, characterized in that: The reel mechanism (6) comprises: a rotating shaft (8) having one end penetrating a side wall of the fixing frame (5) and being rotatably connected to the fixing frame (5), a fixing shaft (9) having one end fixedly connected to the fixing frame (5) and the other end rotatably connected to the rotating shaft (8), a reel (10) rotatably sleeved on the rotating shaft (8) and having one end fixedly connected to the rotating shaft (8), a rotating handle (11) connected to one end of the rotating shaft (8), and a braking mechanism (12) arranged on the rotating shaft (8); the interior of the reel (10) is hollow; the inner end of the coil spring (7) is fixed to the fixing shaft (9), and the outer end is fixed to the inner wall of the reel (10).

3. A pile foundation drilling hole depth detection device according to claim 2, characterized in that: The drum (10) is provided with a through hole (13), and one end of the measuring rope (1) passes through the drum (10) and is fixed to a fixing clamp on the inner wall of the rotating shaft (8).

4. A pile foundation drilling hole depth detection device according to claim 2, characterized in that: The braking mechanism (12) comprises: a ratchet (14) fixedly sleeved on the rotating shaft (8), and a ratchet pawl (15) elastically connected to the fixing frame (5) and adapted to the ratchet (14); a sliding groove (16) is provided on the side wall of the fixing frame (5); a sliding block (17) is slidably connected in the sliding groove (16); the ratchet pawl (15) is elastically connected to the sliding block (17); and the sliding block (17) can slide along the radial direction of the ratchet (14).

5. The pile foundation drilling hole depth detection device according to claim 1, characterized in that: The bracket (3) comprises two vertical plates (18) arranged in parallel, a horizontal plate (19) connected between the two vertical plates (18), bases (20) respectively arranged at the bottom of the vertical plates (18), and a mounting frame (21) rotatably connected to the fixed pulley (4), wherein the mounting frame (21) and the fixed frame (5) are both arranged at the bottom of the horizontal plate (19).

6. A pile foundation drilling hole depth detection device according to claim 1, characterized in that: The cleaning device also comprises a cleaning mechanism (22), wherein the cleaning mechanism (22) comprises a fixing frame (5) fixedly connected to the bracket (3), two fixing rods (24) arranged parallel to each other, cleaning cylinders (25) respectively arranged on the outer surfaces of the two fixing rods (24) by rotation, and cleaning sponges (26) respectively wrapped on the outer surfaces of the cleaning cylinders (25), wherein the spacing between the two cleaning cylinders (25) is adapted to the measuring rope (1).

7. A pile foundation drilling hole depth detection device according to claim 6, characterized in that: An arc frame (27) fitted therewith is provided on the outer surface of the two cleaning cylinders (25) on the opposite sides thereof, and a plurality of hollow holes (28) are evenly distributed on the arc frame (27).

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