A drilling pile sediment thickness measuring structure

Abstract

The utility model provides a kind of bored pile sediment measuring thickness structure, including support and probe, the support includes bottom plate, sleeve, guide pipe, the sleeve is fixed at the top center of the bottom plate, the bottom end of the guide pipe is inserted into the sleeve, the sleeve is fixed by bolt and the guide pipe connection, the probe is slidably connected in the guide pipe, the guide pipe bottom is equipped with several locking mechanisms matched with the guide pipe, the top of the guide pipe is equipped with release mechanism matched with the guide pipe.The utility model has the beneficial effects as follows, the utility model solves the problem of low measurement accuracy caused by probe retraction in the prior art through the synergistic effect of release mechanism and locking mechanism.

Description

Technical Field

[0001] This utility model is a structure for measuring the thickness of sediment in bored piles, belonging to the field of pile foundation quality inspection. Background Technology

[0002] During the construction of bored piles, the thickness of the sediment at the bottom of the hole is a key quality control indicator, which is directly related to the final bearing capacity of the pile foundation and the safety of the project. Before pouring concrete, the thickness of the sediment at the bottom of the hole must be accurately measured.

[0003] Existing measurement methods mostly involve lowering a measuring hammer or probe to the bottom of the hole for detection. The thickness of the sediment is calculated by recording the difference in depth between when the measuring device contacts the surface of the sediment and when it contacts the hard bottom of the hole. This process requires lowering the measuring device to the bottom of the hole and then pulling the entire device out of the hole to take the reading after the measurement is completed.

[0004] When the measuring device is pulled out of the deep hole filled with mud, the probe is subjected to the combined action of the buoyancy of the mud and the friction of the upward water flow. This upward force causes the probe, which has already been lowered into place, to retract upward, resulting in the final measurement reading being less than the actual sediment thickness and causing serious distortion of the measurement results.

[0005] Such measurement errors directly affect construction personnel's judgment on the hole cleaning effect and pile foundation quality. They may misjudge pile foundations that do not meet construction requirements as qualified, which may bring safety hazards to the building structure. Therefore, existing measuring tools have obvious shortcomings in preventing probe retraction and ensuring the accuracy of readings.

[0006] Therefore, this utility model proposes a structure for measuring the thickness of sediment in bored piles to address the shortcomings of existing technologies. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a structure for measuring the thickness of sediment in bored piles.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0009] A structure for measuring the thickness of sediment in bored piles includes a support and a probe. The support includes a base plate, a sleeve, and a guide tube. The sleeve is fixed at the top center of the base plate. The bottom end of the guide tube is inserted into the sleeve. The sleeve is connected and fixed to the guide tube by bolts. The probe is slidably connected inside the guide tube. The bottom of the guide tube is provided with several locking mechanisms that cooperate with the guide tube. The top of the guide tube is provided with a releasing mechanism that cooperates with the guide tube.

[0010] Furthermore, a lifting rope is fixed to the top of the probe, and several slots are evenly formed on the outer circumference of the probe.

[0011] Furthermore, the locking mechanism includes a fixed cylinder fixed to the outer surface of the guide tube and an annular groove formed in the inner wall of the guide tube. A through hole communicating with the fixed cylinder is formed on the inner wall of the annular groove. A slide rod is slidably connected inside the fixed cylinder. A fixed plate is fixed to the outer surface of the middle part of the slide rod. A spring is sleeved and connected to the outer surface of the slide rod and located between the fixed plate and the inner wall of the fixed cylinder. The end of the slide rod passes through the through hole into the annular groove and is connected and fixed to the locking plate. The locking plate is engaged and adapted with the locking groove.

[0012] Furthermore, the card plate has a semi-circular annular structure, and the top of the card plate away from the slide bar has a sloping structure.

[0013] Furthermore, the release mechanism includes two sets of clamping arms symmetrically arranged on the top of the guide tube. The clamping ends of the clamping arms are engaged and adapted with the slots. The tail ends of the clamping arms are connected to ropes two. The tops of the two ropes two are connected and fixed to ropes three. A rope one is connected to the side of the two clamping arms on opposite sides. The bottom ends of the two ropes one are connected and fixed to the counterweight.

[0014] Furthermore, the clamping arm includes a fixed post and two clamping plates, the fixed post being fixed to the top of the guide tube, and the two clamping plates being hinged to the fixed post.

[0015] Furthermore, the top end of the first rope is fixed to the bottom of the tail end of the clamp.

[0016] Furthermore, the tail end of the second rope is provided with two connecting supports, which are respectively connected and fixed to the top of the tail end of the clamp.

[0017] The beneficial effects of this utility model are:

[0018] This invention solves the problem in the prior art where the measuring probe retracts during the lifting process from the hole, resulting in inaccurate measurement readings, by using a one-way locking mechanism that coordinates multiple sets of slots on the probe with a spring-driven locking plate. This reliably locks the probe's descent depth, ensuring accurate measurement results of the sediment thickness.

[0019] This invention solves the problems of complex probe release operations or unreliable release actions in underwater mud environments by using a release mechanism composed of ropes, rotatable clamps, and counterweights. It achieves automatic probe release when the equipment touches the bottom, simplifying on-site operation steps and improving the level of automation and reliability of the operation.

[0020] This invention utilizes a locking mechanism design. When the probe is pulled up by the rope at the top of the probe, the bottom wall of the slot on the probe is pressed together with the flat bottom of the plate. The pressing between the planes achieves locking and limiting, thereby driving the support to rise synchronously when the probe rises.

[0021] This invention utilizes the design of a sloping structure at the top of the clamping plate. As the probe descends along the guide tube, it can push the clamping plate into the annular groove by squeezing the sloping structure at the top of the clamping plate, thus ensuring that the clamping plate does not affect the descent of the probe.

[0022] This invention utilizes a release mechanism. Before lowering the equipment, the operator pulls rope three upwards. Rope three, through rope two, applies tension to the end of the clamp located on the other side of the fixed pile, causing the clamp to rotate around the fixed pile. This clamp clamps the probe located inside the guide tube. At this time, the tension of rope three is greater than the tension generated by the weight of the counterweight, and the clamp remains clamped. The operator lowers the entire equipment to the bottom of the hole using rope three. When the bottom plate contacts the sediment surface, rope three loosens, the upward tension disappears, and the counterweight falls under its own weight. Rope one pulls the end of the clamp located on the fixed pile, driving the clamp to rotate in the opposite direction around the fixed pile, thereby releasing the clamp on the probe. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of a borehole pile sediment thickness measuring structure according to the present invention.

[0025] Figure 2 This is a schematic diagram of the support structure for measuring the thickness of sediment in a bored pile according to this utility model.

[0026] Figure 3 This is a schematic diagram of the locking mechanism of a borehole pile sediment thickness measuring structure according to the present invention.

[0027] Figure 4 This is a schematic diagram of the loosening mechanism of a borehole pile sediment thickness measuring structure according to the present invention. Figure 1 ;

[0028] Figure 5 This is a schematic diagram of the support structure for measuring the thickness of sediment in a bored pile according to this utility model.

[0029] Figure 6This is a schematic diagram of the loosening mechanism of a borehole pile sediment thickness measuring structure according to the present invention. Figure 2 .

[0030] In the diagram, 1. Base plate; 2. Release mechanism; 201. Fixed stake; 202. Clamping plate; 203. Rope 1; 204. Counterweight; 205. Rope 2; 206. Rope 3; 3. Sleeve; 4. Bolt; 5. Guide tube; 6. Fixed cylinder; 7. Slide rod; 8. Fixed plate; 9. Spring; 10. Clamping plate; 11. Probe; 12. Clamping groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-6 This utility model provides a structural solution for measuring the thickness of sediment in bored piles, including a support and a probe 11. To enhance the ability of the probe 11 to penetrate sediment and ensure its stability when falling in the mud, the probe 11 is preferably a solid rod made of heavy metal. The greater self-weight helps the probe 11 overcome the buoyancy and resistance of the mud, ensuring that it can fall smoothly and penetrate into the solid bottom of the hole. The support includes a base plate 1, a sleeve 3, and a guide tube 5. The sleeve 3 is fixed at the top center of the base plate 1. The bottom end of the guide tube 5 is inserted into the sleeve 3. The sleeve 3 is connected and fixed to the guide tube 5 by bolts 4. The probe 11 is slidably connected in the guide tube 5. The distance between the probe 11 and the inner wall of the guide tube 5 is small. Therefore, during the sliding process of the probe 11 in the guide tube 2, the probe 11 will not tilt in the guide tube 5, but will only slide down stably. The bottom of the guide tube 5 is provided with several locking mechanisms that cooperate with the guide tube 5, and the top of the guide tube 5 is provided with a releasing mechanism 2 that cooperates with the guide tube 5.

[0033] See Figure 5 The probe 11 is fixed with a lifting rope at its top, and a number of slots 12 are evenly distributed on the outer circumference of the probe 11. In order to minimize the locking position difference of the one-way locking mechanism while ensuring the reliability of locking, the slots 12 on the probe 11 are designed as multiple sets of annular slots equidistantly arranged along its length. The dense distribution of annular slots ensures that no matter where the probe 11 stops falling, the locking plate 10 can always find the nearest set of slots 12 to engage, thereby controlling the error of the measurement reading within the minimum range.

[0034] See Figure 3 The locking mechanism includes a fixed cylinder 6 fixed to the outer surface of the guide tube 5 and an annular groove formed in the inner wall of the guide tube 5. A through hole communicating with the fixed cylinder 6 is formed on the inner wall of the annular groove. A sliding rod 7 is slidably connected inside the fixed cylinder 6. A fixed plate 8 is fixed to the outer surface of the middle part of the sliding rod 7. A spring 9 is sleeved and connected to the outer surface of the sliding rod 7 between the fixed plate 8 and the inner wall of the fixed cylinder 6. The end of the sliding rod 7 passes through the through hole into the annular groove and is connected and fixed to a locking plate 10. The locking plate 10 is engaged and adapted with the locking groove 12. The locking plate 10 is housed in the annular groove, thus not occupying the inner diameter space of the guide tube 5. The sliding rod 7, the fixed plate 8, and the locking plate 10 are fixedly connected as a single unit by welding or integral casting, forming a rigid integral locking assembly. When the probe 11 descends and pushes the locking plate 10 open, the sliding rod 7 and the fixed plate 8 will... The synchronous movement without delay compresses the spring 9. When the spring 9 returns to its original position, it can drive the locking plate 10 to quickly engage with the slot 12, ensuring instantaneous response of the locking action. At the same time, when the probe 11 is lifted up by the rope at the top of the probe 11, the inner bottom wall of the slot 12 on the probe 11 is pressed together with the flat bottom of the locking plate 10. The locking and limiting is achieved by the compression between the planes. Thus, when the probe 11 rises, it can drive the bracket to rise synchronously. The locking plate 10 has a semi-circular ring structure, and the top of the locking plate 10 away from the slide rod 7 is a sloping structure. The design of the sloping structure at the top of the locking plate 10 allows the probe 11 to push the locking plate 10 open with minimal resistance when it falls. When it is necessary to lock the probe 11 and the locking plate 10, the flat engaging surface at the bottom of the locking plate 10 can form a near-vertical contact with the slot wall of the slot 12, thereby providing maximum locking force and effectively preventing slippage or disengagement.

[0035] See Figure 4 , Figure 6The release mechanism 2 includes two sets of clamping arms symmetrically arranged on the top of the guide tube 5. The symmetrical arrangement of the two sets of clamping arms ensures that the clamping force is evenly applied to the probe 11, avoiding the potential deviation of the probe 11 caused by unilateral clamping. The clamping ends of the clamping arms are engaged with the slots 12, and the tail ends of the clamping arms are connected to ropes 205. The tops of the two ropes 205 are connected and fixed to ropes 206. A rope 203 is connected to each side of the two clamping arms on opposite sides, and the bottom ends of the two ropes 203 are connected and fixed to a counterweight 204. Each clamping arm includes a fixing post 201 and two clamping plates 202. The fixing post 201 is fixed to the top of the guide tube 5. The two clamping plates 202 are hinged to the fixed pile 201. The top end of the first rope 203 is fixed to the bottom of the tail end of the clamping plate 202. The tail end of the second rope 205 is provided with two connecting supports, which are respectively connected and fixed to the top of the tail end of the clamping plate 202. Through the design of the release mechanism 2, before lowering the equipment, the operator pulls the third rope 206 upwards. The third rope 206 applies tension to the end of the clamping plate 202 on the other side of the fixed pile 201 through the second rope 205, causing the clamping plate 202 to rotate around the fixed pile 201. Thus, the clamping plate 202 clamps the probe 11 located in the guide tube 5. At this time, the tension of the third rope 206 is greater than the weight of the counterweight 204. The upward tension keeps clamp 202 clamped. The operator lowers the entire device to the bottom of the hole using rope 3 206. When the bottom plate 1 contacts the sediment surface, rope 3 206 loosens, the upward tension disappears, and the counterweight 204 falls under its own weight. Rope 1 203 pulls the end of clamp 202 located on one side of the fixed pile 201, driving clamp 202 to rotate in the opposite direction around the fixed pile 201, thereby loosening the clamp on probe 11. At the same time, during the pulling of rope 3 206, rope 2 205 is pulled by force, pulling clamp 202. The connection points of the two ropes 2 205 and the vertical rope 3 206, and the connection points of the two ropes 2 205 and the two clamps 202 respectively, form a triangle. At this time, Considering the counterweight 204, the third rope 206 is pulled upwards. The two second ropes 205 pull the clamp 202. The clamp 202 is not subjected to vertical upward force, but is tilted. The tilt of the second rope 205 will cause its horizontal component to generate a torque that makes the clamp 202 rotate inward, thereby reducing the V angle. If the pulling force is greater than the counterweight 204, then the counterweight 204 can be considered non-existent. However, the weight of the entire device is greater than the counterweight 204. Therefore, when the clamp 202 is clamped and lowered, the counterweight 204 has no effect. When it is lowered to the bottom, the third rope 206 no longer pulls. At this time, the counterweight 204 takes effect, causing the clamp 202 to rotate in the opposite direction, increasing the V angle, thereby lowering the probe 11.

[0036] During use, before lowering the equipment, the operator pulls rope three 206 upwards taut. Rope three 206, through rope two 205, applies tension to the end of clamp 202 located on the other side of the fixed pile 201, causing clamp 202 to rotate around the fixed pile 201, thereby clamping the probe 11 located inside the guide tube 5. At this time, the tension of rope three 206 is greater than the tension generated by the weight of the counterweight 204, and clamp 202 remains clamped. The operator lowers the entire equipment to the bottom of the hole using rope three 206. When the bottom plate 1 contacts the surface of the sediment, the rope... When cable 206 loosens, the upward tension disappears, and counterweight 204 falls under its own weight. Cable 203 pulls the end of clamp 202 located on one side of fixed post 201, driving clamp 202 to rotate in the opposite direction around fixed post 201, thus loosening the clamp on probe 11. Probe 11, under its own weight, slides downward along guide tube 5, which is fixed to sleeve 3 by fixing bolt 4, and embeds itself into sediment. During its descent, the rod of probe 11 contacts locking plate 10. Because the top of locking plate 10 is inclined, probe 11... The rod pushes open the locking plate 10, causing the sliding rod 7 and the fixing plate 8, which are fixedly connected to the locking plate 10, to move backward. The fixing plate 8 compresses the spring 9, which is located between the inner wall of the fixing cylinder 6 and the fixing plate 8. When the probe 11 falls to the bottom of the hole and stops moving, the locking plate 10 on the inner wall of the guide tube 5 will engage with one of the slots 12 on the probe 11. Specifically, the compressed spring 9 extends, and the elastic force of the spring 9 pushes the fixing plate 8, the sliding rod 7, and the locking plate 10 back to their original positions. The flat bottom of the locking plate 10 engages under the elastic force of the spring 9. In the nearest set of slots 12 arranged along the length of the probe 11, the bottom of the locking plate 10 and the top of the slot wall of the slot 12 form a firm locking fit, preventing the probe 11 from retracting upwards. Finally, the rope and rope 206 tied to the top of the probe 11 are pulled upwards simultaneously to pull the device out of the hole. The vertical distance between the bottom end of the probe 11 and the bottom surface of the base plate 1 is the sediment thickness. Through the coordinated action of the loosening mechanism 2 and the locking mechanism, the problem of low measurement accuracy caused by the retraction of the probe 11 in the prior art is solved.

[0037] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A structure for measuring the thickness of sediment in bored piles, characterized in that, The device includes a support and a probe (11). The support includes a base plate (1), a sleeve (3), and a guide tube (5). The sleeve (3) is fixed at the top center of the base plate (1). The bottom end of the guide tube (5) is inserted into the sleeve (3). The sleeve (3) is connected and fixed to the guide tube (5) by bolts (4). The probe (11) is slidably connected to the guide tube (5). The bottom of the guide tube (5) is provided with several locking mechanisms that cooperate with the guide tube (5). The top of the guide tube (5) is provided with a releasing mechanism (2) that cooperates with the guide tube (5).

2. The borehole pile sediment thickness measurement structure according to claim 1, characterized in that, The top of the probe (11) is fixed with a lifting rope, and a number of slots (12) are evenly opened on the outer circumference of the probe (11).

3. The borehole pile sediment thickness measurement structure according to claim 2, characterized in that, The locking mechanism includes a fixed cylinder (6) fixed on the outer surface of the guide tube (5) and an annular groove formed in the inner wall of the guide tube (5). A through hole communicating with the fixed cylinder (6) is provided on the inner wall of the annular groove. A slide rod (7) is slidably connected inside the fixed cylinder (6). A fixed plate (8) is fixed on the outer surface of the middle part of the slide rod (7). A spring (9) is sleeved and connected on the outer surface of the slide rod (7) between the fixed plate (8) and the inner wall of the fixed cylinder (6). The end of the slide rod (7) passes through the through hole into the annular groove and is connected and fixed to the locking plate (10). The locking plate (10) is engaged and adapted with the locking groove (12).

4. The borehole pile sediment thickness measurement structure according to claim 3, characterized in that, The card plate (10) has a semi-circular ring structure, and the top of the card plate (10) away from the slide bar (7) has a sloping structure.

5. The borehole pile sediment thickness measurement structure according to claim 4, characterized in that, The release mechanism (2) includes two sets of clamping arms symmetrically arranged on the top of the guide tube (5). The clamping end of the clamping arm is engaged with the slot (12). The tail end of the clamping arm is connected to the second rope (205). The top of the two second ropes (205) is connected and fixed to the third rope (206). The sides of the two clamping arms on opposite sides are respectively connected to a first rope (203). The bottom ends of the two first ropes (203) are connected and fixed to the counterweight (204).

6. The borehole pile sediment thickness measurement structure according to claim 5, characterized in that, The clamping arm includes a fixed post (201) and two clamping pieces (202). The fixed post (201) is fixed to the top of the guide tube (5), and the two clamping pieces (202) are hinged to the fixed post (201).

7. The borehole pile sediment thickness measurement structure according to claim 6, characterized in that, The top end of the first rope (203) is fixed to the bottom of the tail end of the clamp (202).

8. The borehole pile sediment thickness measurement structure according to claim 7, characterized in that, The tail end of the second rope (205) is provided with two connecting branches, which are respectively connected and fixed to the top of the tail end of the clamp (202).

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