Device for detecting empty grouting height of pile foundation

Abstract

The utility model relates to a device for detecting the empty irrigation height of a pile foundation, which comprises a handle, a telescopic rod, a sampling barrel, a sampling barrel bottom cover and a cover opening rope, a vertical rod of the handle is arranged in the top of the telescopic rod, the sampling barrel is fixedly arranged at the lower part of one side of the telescopic rod, a plug is arranged at the bottom end of the telescopic rod, and the sampling barrel bottom cover is connected with the plug through a hinge. A tension spring is mounted between the sampling barrel bottom cover and the inner wall of the sampling barrel; a first rope head of the cover opening rope is tied on a first hanging lug at the bottom end of the bottom cover of the sampling barrel, and a second rope head of the cover opening rope penetrates through a threading hole formed in the handle from bottom to top. The device has the advantages that the telescopic rod, the sampling barrel, the sampling barrel bottom cover, the tension spring and the opening cover are matched in a telescopic mode to obtain a sample in a cast-in-place pile and the measurement height, so that the height of the poured concrete is detected, constructors can conveniently calculate the amount of the concrete needing to be poured according to the detected data, waste of the concrete is reduced, and the situation that the pile needs to be connected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a device for detecting the empty filling height of a pile foundation. Background Art

[0002] Due to the large scale and ahead-of-time number of national infrastructure projects in recent years, major projects have been implemented one after another. Usually, infrastructure projects are inseparable from cast-in-place pile foundation construction, such as: podium foundation of building construction projects, subway station enclosure structure of municipal engineering, sluice foundation of water conservancy projects, underground structure of bridges of highway and railway projects, which are often inseparable from cast-in-place pile foundation construction. However, the pouring height of cast-in-place pile foundation is difficult to control, and the phenomenon of waste of volume caused by "over-pouring" of concrete and the phenomenon of "connecting piles" still exist.

[0003] The traditional method of detecting the pouring height of underwater cast-in-place pile foundations usually uses PVC pipes or bamboo poles for trial insertion, and relies on construction experience to control the empty pouring height, which often has large errors. Especially for complex geology and some friction piles, the floating slurry on the upper part of the pouring surface of the cast-in-place pile foundation is often too thick, the mud specific gravity is too large, and the mud becomes a color close to that of concrete, which can easily lead to misjudgment and cause the pouring height to fail to reach the designed elevation and require pile connection or cause the concrete to exceed the cubic level. Utility Model Content

[0004] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a device for detecting the empty filling height of pile foundation.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A device for detecting the height of empty filling of pile foundations comprises a "T"-shaped handle, a telescopic rod, a sampling tube, a bottom cover of the sampling tube, and a cover-opening rope, wherein the vertical rod of the handle is installed in the top of the telescopic rod, the sampling tube is fixedly installed on the lower part of one side of the telescopic rod, a plug is installed at the bottom end of the telescopic rod, the bottom cover of the sampling tube is connected to the plug by a hinge, a tension spring for driving the bottom cover of the sampling tube to cover the bottom end of the sampling tube is installed between the bottom cover of the sampling tube and the inner wall of the sampling tube; the first rope head of the cover-opening rope is tied to the first hanging ear at the bottom end of the bottom cover of the sampling tube, and the second rope head of the cover-opening rope passes through the threading hole provided on the handle from bottom to top.

[0007] Among them, the telescopic rod includes a first hollow rod, a second hollow rod, a third hollow rod, and a fourth hollow rod from the outside to the inside, the top of the first hollow rod is screwed with two symmetrical first manual bolts, the bottom of the second hollow rod is provided with two symmetrical first positioning holes for the tail of the first manual bolt to be inserted, and the top of the second hollow rod is provided with two symmetrical second positioning holes for the tail of the first manual bolt to be inserted; the top of the second hollow rod is screwed with two symmetrical second manual bolts, the bottom of the third hollow rod is provided with two symmetrical third positioning holes for the tail of the second manual bolt to be inserted, and the top of the third hollow rod is provided with two symmetrical fourth positioning holes for the tail of the second manual bolt to be inserted; the top of the third hollow rod is screwed with two symmetrical third manual bolts, the bottom of the fourth hollow rod is provided with two symmetrical fifth positioning holes for the tail of the third manual bolt to be inserted, and the top of the second hollow rod is provided with two symmetrical sixth positioning holes for the tail of the third manual bolt to be inserted.

[0008] Among them, a circle of first inner limit flange is arranged on the inner side of the top of the first hollow rod, and a circle of first outer limit flange is arranged on the outer side of the bottom of the second hollow rod, and the first inner limit flange can be hooked with the first outer limit flange; a circle of second inner limit flange is arranged on the inner side of the top of the second hollow rod, and a circle of second outer limit flange is arranged on the outer side of the bottom of the third hollow rod, and the second inner limit flange can be hooked with the second outer limit flange; a circle of third inner limit flange is arranged on the inner side of the top of the third hollow rod, and a circle of third outer limit flange is arranged on the outer side of the bottom of the fourth hollow rod, and the third inner limit flange can be hooked with the third outer limit flange.

[0009] Among them, the top of the fourth hollow rod is screwed with four fourth manual bolts arranged in a circular array, the vertical rod of the handle is provided with four screw holes arranged in a circular array, the vertical rod of the handle is inserted into the top of the fourth hollow rod from top to bottom, and the tail of the fourth manual bolt is screwed into the screw hole.

[0010] Wherein, a threading tube is sleeved in the threading hole, the cover opening rope passes through the threading tube from bottom to top, and a round handle perpendicular to the threading tube is fixedly connected to the top of the threading tube.

[0011] Wherein, a winding frame is installed on the handle, the second rope head of the cover opening rope is tied to the winding frame, and the redundant part of the cover opening rope is wound on the winding frame.

[0012] Among them, the winding rack includes a mounting plate and two winding rods. The bottom of the mounting plate is fixed to one side of the handle with screws. The two winding rods are vertically fixed to the same side of the mounting plate. A limiting plate is provided at the end of the winding rod away from the mounting plate to prevent the cover opening rope from slipping off the winding rod. The second rope end of the cover opening rope is tied to one of the winding rods, and the redundant part of the cover opening rope is wound around the two winding rods.

[0013] Wherein, the cross section of the sampling tube and the cross section of the bottom cover of the sampling tube are both semicircular.

[0014] Wherein, a guide block with a right-angle trapezoidal longitudinal section is arranged at the bottom end of the plug.

[0015] A pulley bracket is installed on one side of the bottom of the telescopic rod, and the pulley bracket and the sampling barrel are respectively located on two opposite sides of the telescopic rod. A protrusion with a triangular cross-section is provided on the side of the pulley bracket facing the sampling barrel; a fixed pulley is installed on the pulley bracket, and the cover opening rope passes through a groove on the fixed pulley.

[0016] The beneficial effects of the utility model are as follows: the telescopic function of the telescopic rod is used to detect the position of the top of the floating mud, and the telescopic rod, the sampling tube, the bottom cover of the sampling tube, the tension spring, and the telescopic cooperation of the cover are used to obtain the sample in the cast-in-place pile and measure the height, thereby detecting the height of the poured concrete, making it convenient for construction personnel to calculate the amount of concrete that needs to be poured according to the detected data, reducing the waste of concrete and avoiding the need to connect piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the device in the utility model;

[0019] Figure 2 It is a schematic diagram of the planar structure of the device in the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of the bottom of the device in the utility model;

[0021] Figure 4 It is a partial structural schematic diagram of the top of the device in the utility model;

[0022] Figure 5 It is a schematic diagram of the planar structure of the telescopic rod after being decomposed in the utility model;

[0023] Figure 6It is a schematic diagram of the partial structure of the top of the telescopic rod after being disassembled in the utility model;

[0024] Figure 7 It is a partial structural schematic diagram of the bottom of the telescopic rod after being disassembled in the utility model;

[0025] Figure 8 It is a structural schematic diagram of the handle and the winding frame in the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the threading tube and the handle in the utility model;

[0027] Fig.10 It is a partial structural schematic diagram of the bottom of the sampling tube after being cut in the utility model;

[0028] Explanation of the numbers in the figure: handle 1, telescopic rod 2, sampling tube 3, sampling tube bottom cover 4, opening rope 5, first hollow rod 6, second hollow rod 7, third hollow rod 8, fourth hollow rod 9, first manual bolt 10, first positioning hole 11, second positioning hole 12, second manual bolt 13, third positioning hole 14, fourth positioning hole 15, third manual bolt 16, fifth positioning hole 17, sixth positioning hole 18, first inner limiting flange 19, first outer limiting flange 20, second Inner limit flange 21, second outer limit flange 22, third inner limit flange 23, third outer limit flange 24, vertical rod 25, fourth manual bolt 26, screw hole 27, plug 28, guide block 29, tension spring 30, second hanging ear 31, third hanging ear 32, first hanging ear 33, threading hole 34, hinge 35, pulley bracket 36, fixed pulley 37, protrusion 38, threading tube 39, round handle 40, winding frame 41, mounting plate 42, winding rod 43, limit plate 44. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] like Figures 1 to 10 As shown, a device for detecting the empty filling height of a pile foundation comprises a T-shaped handle 1, a telescopic rod 2, a sampling tube 3, a bottom cover 4 of the sampling tube, and an opening rope 5. The cross-sections of the sampling tube 3 and the bottom cover 4 of the sampling tube are both semicircular.

[0031] The telescopic rod 2 includes, from the outside to the inside, a first hollow rod 6, a second hollow rod 7, a third hollow rod 8, and a fourth hollow rod 9. The top of the first hollow rod 6 is screwed with two symmetrical first manual bolts 10, and the bottom of the second hollow rod 7 is provided with two symmetrical first positioning holes 11 for inserting the tail of the first manual bolt 10, and the top of the second hollow rod 7 is provided with two symmetrical second positioning holes 12 for inserting the tail of the first manual bolt 10; the top of the second hollow rod 7 is screwed with two symmetrical second manual bolts 13, and the bottom of the third hollow rod 7 is provided with two symmetrical third positioning holes 14 for inserting the tail of the second manual bolt 13, and the top of the third hollow rod 8 is provided with two symmetrical fourth positioning holes 15 for inserting the tail of the second manual bolt 13; the top of the third hollow rod 8 is screwed with two symmetrical third manual bolts 16, and the bottom of the fourth hollow rod 15 is provided with two symmetrical fifth positioning holes 17 for inserting the tail of the third manual bolt 16, and the top of the second hollow rod 7 is provided with two symmetrical sixth positioning holes 18 for inserting the tail of the third manual bolt.

[0032] A circle of first inner limit flange 19 is arranged on the inner side of the top of the first hollow rod 6, and a circle of first outer limit flange 20 is arranged on the outer side of the bottom of the second hollow rod 7, and the first inner limit flange 19 can be hooked with the first outer limit flange 20; a circle of second inner limit flange 21 is arranged on the inner side of the top of the second hollow rod 7, and a circle of second outer limit flange 22 is arranged on the outer side of the bottom of the third hollow rod 8, and the second inner limit flange 21 can be hooked with the second outer limit flange 22; a circle of third inner limit flange 23 is arranged on the inner side of the top of the third hollow rod 8, and a circle of third outer limit flange 24 is arranged on the outer side of the bottom of the fourth hollow rod 9, and the third inner limit flange 23 can be hooked with the third outer limit flange 24.

[0033] The vertical rod 25 of the handle 1 is installed in the top of the telescopic rod 2. Specifically, the top of the fourth hollow rod 9 is screwed with four fourth manual bolts 26 arranged in a circular array, and four screw holes 27 arranged in a circular array are opened on the vertical rod 25 of the handle 1. The vertical rod 25 of the handle 1 is inserted into the top of the fourth hollow rod 9 from top to bottom, and the tail of the fourth manual bolt 26 is screwed into the screw hole 27.

[0034] A plug 28 is installed at the bottom end of the telescopic rod 2, and a guide block 29 with a right-angled trapezoidal longitudinal section is provided at the bottom end of the plug 28. When the telescopic rod 2 is inserted into the bottom of the pile hole, the guide block 29 plays a guiding role to reduce the resistance of the plug 28.

[0035] The sampling tube 3 is fixedly mounted on a lower part of one side of the telescopic rod 2 , and the bottom cover 4 of the sampling tube is connected to the plug through a hinge 35 .

[0036] A tension spring 30 is installed between the bottom cover 4 of the sampling tube and the inner wall of the sampling tube 3 to drive the bottom cover 4 of the sampling tube to cover the bottom end of the sampling tube 3. The specific installation structure of the tension spring 30 is as follows: a second hanging ear 31 is fixedly connected to the top of the bottom cover 4 of the sampling tube, and a third hanging ear 32 is fixedly connected to the inner wall of the sampling tube 3. The two ends of the tension spring 30 are hooked on the second hanging ear 31 and the third hanging ear 32 respectively.

[0037] The first rope end of the cover-opening rope 5 is tied to the first hanging ear 33 at the bottom end of the bottom cover 4 of the sampling tube, and the second rope end of the cover-opening rope 5 passes through the threading hole 34 opened on the handle 1 from bottom to top.

[0038] In order to prevent sliding friction between the opening rope 5 and the plug 28 and the hinge 35, a pulley bracket 36 is installed on one side of the bottom of the telescopic rod 2. The pulley bracket 36 and the sampling tube 3 are respectively located on the opposite sides of the telescopic rod 2. A fixed pulley 37 is installed on the pulley bracket 36, and the opening rope 5 passes through the groove on the fixed pulley 37.

[0039] A protrusion 38 with a triangular cross section is provided on one side of the pulley bracket 36 facing the sampling tube 3 , and the protrusion 38 is used to guide the floating mud and concrete to both sides of the pulley bracket 36 to prevent the floating mud and concrete from being stuck between the pulley bracket 36 and the plug 28 .

[0040] A threading tube 39 is sleeved in the threading hole 34, and the cover opening rope 5 passes through the threading tube 39 from bottom to top. A round handle 40 perpendicular to the threading tube 39 is fixedly connected to the top of the threading tube 39, which is convenient for the staff to lift the cover opening rope 5 upward.

[0041] A winding frame 41 is installed on the handle 1, and the second rope end of the cover opening rope 5 is tied to the winding frame 41, and the redundant part of the cover opening rope 5 is wound on the winding frame 41. The winding frame 41 includes a mounting plate 42 and two winding rods 43. The bottom of the mounting plate 42 is fixed to one side of the handle 1 by screws, and the two winding rods 43 are vertically fixed to the same side of the mounting plate 42. A stopper plate 44 is provided at one end of the winding rod 43 away from the mounting plate 42 to prevent the cover opening rope 5 from slipping off the winding rod 43. The second rope end of the cover opening rope 5 is tied to one of the winding rods 43, and the redundant part of the cover opening rope 5 is wound on the two winding rods 43 to prevent the redundant cover opening rope 5 from being entangled together.

[0042] As a preferred embodiment, in order to facilitate reading of the length of the telescopic rod extending into the pile hole, a scale indicating the extended length of the telescopic rod is printed on one side of the telescopic rod.

[0043] Detection process:

[0044] 1. Extend the telescopic rod until the bottom of the sampling tube touches the top of the floating slurry. The length of the telescopic rod extending into the pile hole at this time is recorded as the initial length L1;

[0045] 2. Lift the cover-opening rope upward to open the bottom cover of the sampling tube, and continue to insert the telescopic rod to a depth of 1 meter toward the bottom of the pile hole. Then loosen the cover-opening rope to allow the bottom cover of the sampling tube to return to the bottom of the sampling tube under the action of the restoring force of the tension spring. The length of the telescopic rod extending into the pile hole at this time is recorded as the final length L2;

[0046] 3. Retract the telescopic rod and lift the sampling tube to the side of the pile hole, take out the sample in the sampling tube, measure the length of the concrete part of the sample and record it as the concrete pouring length L3;

[0047] 4. Calculate the height difference h between the top of the poured concrete and the design elevation H1 of the poured pile foundation using the following formula:

[0048] h=H1-(H0-L2)-L3 (Formula 1)

[0049] Among them, H0 is the hole elevation at the top of the pile hole.

[0050] The telescopic function of the telescopic rod is used to probe the top of the floating mud. The telescopic rod, sampling tube, sampling tube bottom cover, tension spring, and cover telescopic function are used to obtain samples from the cast-in-place pile and measure the height, thereby detecting the height of the poured concrete. This makes it convenient for construction personnel to calculate the amount of concrete that needs to be poured based on the detected data, reducing concrete waste and avoiding the need to connect piles.

[0051] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for detecting the height of empty filling of pile foundation, characterized in that: The utility model comprises a "T"-shaped handle, a telescopic rod, a sampling barrel, a bottom cover of the sampling barrel, and a cover-opening rope, wherein the vertical rod of the handle is installed at the top of the telescopic rod, the sampling barrel is fixedly installed at the lower part of one side of the telescopic rod, a plug is installed at the bottom end of the telescopic rod, the bottom cover of the sampling barrel is connected to the plug by a hinge, and a tension spring for driving the bottom cover of the sampling barrel to cover the bottom end of the sampling barrel is installed between the bottom cover of the sampling barrel and the inner wall of the sampling barrel; the first rope end of the cover-opening rope is tied to the first hanging ear at the bottom end of the bottom cover of the sampling barrel, and the second rope end of the cover-opening rope passes through the threading hole opened on the handle from bottom to top.

2. The device according to claim 1, characterized in that: The telescopic rod includes, from the outside to the inside, a first hollow rod, a second hollow rod, a third hollow rod, and a fourth hollow rod in sequence; the top of the first hollow rod is screwed with two symmetrical first manual bolts, the bottom of the second hollow rod is provided with two symmetrical first positioning holes for the tail of the first manual bolt to be inserted, and the top of the second hollow rod is provided with two symmetrical second positioning holes for the tail of the first manual bolt to be inserted; the top of the second hollow rod is screwed with two symmetrical second manual bolts, the bottom of the third hollow rod is provided with two symmetrical third positioning holes for the tail of the second manual bolt to be inserted, and the top of the third hollow rod is provided with two symmetrical fourth positioning holes for the tail of the second manual bolt to be inserted; the top of the third hollow rod is screwed with two symmetrical third manual bolts, the bottom of the fourth hollow rod is provided with two symmetrical fifth positioning holes for the tail of the third manual bolt to be inserted, and the top of the second hollow rod is provided with two symmetrical sixth positioning holes for the tail of the third manual bolt to be inserted.

3. The device according to claim 2, characterized in that: A circle of first inner limit flange is arranged on the inner side of the top of the first hollow rod, and a circle of first outer limit flange is arranged on the outer side of the bottom of the second hollow rod, and the first inner limit flange can be hooked with the first outer limit flange; a circle of second inner limit flange is arranged on the inner side of the top of the second hollow rod, and a circle of second outer limit flange is arranged on the outer side of the bottom of the third hollow rod, and the second inner limit flange can be hooked with the second outer limit flange; a circle of third inner limit flange is arranged on the inner side of the top of the third hollow rod, and a circle of third outer limit flange is arranged on the outer side of the bottom of the fourth hollow rod, and the third inner limit flange can be hooked with the third outer limit flange.

4. The device according to claim 2, characterized in that: The top of the fourth hollow rod is screwed with four fourth manual bolts arranged in a circular array, and the vertical rod of the handle is provided with four screw holes arranged in a circular array. The vertical rod of the handle is inserted into the top of the fourth hollow rod from top to bottom, and the tail of the fourth manual bolt is screwed into the screw hole.

5. The device according to claim 1, characterized in that: A threading tube is sleeved in the threading hole, the cover opening rope passes through the threading tube from bottom to top, and a round handle vertical to the threading tube is fixedly connected to the top of the threading tube.

6. The device according to claim 1, characterized in that: A winding frame is installed on the handle, the second rope head of the cover-opening rope is tied to the winding frame, and the redundant part of the cover-opening rope is wound on the winding frame.

7. The device according to claim 6, characterized in that: The winding rack includes a mounting plate and two winding rods. The bottom of the mounting plate is fixed to one side of the handle with screws. The two winding rods are vertically fixed to the same side of the mounting plate. A limiting plate is provided at one end of the winding rod away from the mounting plate to prevent the cover opening rope from slipping off the winding rod. The second rope end of the cover opening rope is tied to one of the winding rods, and the redundant part of the cover opening rope is wound around the two winding rods.

8. The device according to claim 1, characterized in that: The cross section of the sampling tube and the cross section of the bottom cover of the sampling tube are both semicircular.

9. The device according to claim 1, characterized in that: A guide block with a right-angle trapezoidal longitudinal section is arranged at the bottom end of the plug.

10. The device according to claim 1, characterized in that: A pulley bracket is installed on one side of the bottom of the telescopic rod. The pulley bracket and the sampling barrel are respectively located on two opposite sides of the telescopic rod. A protrusion with a triangular cross-section is provided on the side of the pulley bracket facing the sampling barrel. A fixed pulley is installed on the pulley bracket, and the cover opening rope passes through a groove on the fixed pulley.

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