CN212742660U - Pile hole sediment detection device - Google Patents
Pile hole sediment detection device Download PDFInfo
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- CN212742660U CN212742660U CN202021225940.8U CN202021225940U CN212742660U CN 212742660 U CN212742660 U CN 212742660U CN 202021225940 U CN202021225940 U CN 202021225940U CN 212742660 U CN212742660 U CN 212742660U
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- measuring rod
- guide sleeve
- detection device
- pile hole
- hole sediment
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Abstract
The utility model discloses a pile hole sediment detection device, belonging to a building construction detection device; the building construction detection device is simple in structure, convenient to operate, high in measurement efficiency, accurate in data and reliable in work. The device comprises a measuring rod and a positioning seat, wherein the positioning seat is formed by a guide sleeve (12) fixedly connected with a bottom plate (9) and a top plate (13), two sides of the guide sleeve are respectively provided with a clamping block (6) hinged to the surface of the top plate (13), one end of each clamping block (6) is connected with a first pull rope (5), and the other end of each clamping block (6) can penetrate through a window (4) formed in the pipe wall of the guide sleeve (12) to tightly hold the measuring rod (8) positioned in the guide sleeve; the top end of the measuring rod is fixed with a second pull rope (1). The utility model discloses once hang and put and to accomplish sediment thickness measurement, be a device for detecting stake hole sediment thickness.
Description
Technical Field
The utility model relates to a pile hole sediment detection device, in particular to a pile hole sediment thickness detection device; belongs to a building construction detection device.
Background
Cast-in-situ bored piles are one of the forms of foundation piles commonly used in construction work and function to transfer the load of the superstructure structure to the rock at a deep level. The quality of the pile hole is directly related to the quality of the foundation pile formed after the concrete is poured. If sediment at the bottom of the pile hole is too thick, uneven sedimentation can be generated between foundation piles, and the upper building structure has potential safety hazards. Therefore, national standards and relevant specifications have clear requirements on the thickness of the pile hole sediment: when the foundation pile mainly uses friction force, the allowable thickness of the sediment is not more than 100 mm; when the foundation pile mainly bears the force at the end, the diameter of the foundation pile is not more than 50 mm; for the end-supported foundation pile, the thickness of sediment at the bottom of the hole is not more than 50 mm; and not more than 150mm for friction type foundation piles.
Currently, the sediment thickness is usually measured by a "pin measuring and cake measuring method", such as a sediment detection device named as "a pile foundation sediment thickness detection tool (CN 110219325 a)": firstly, placing a measuring needle down, and taking the measured depth as the depth of the bottom of the hole; and then, putting the measuring cake, and taking the measured depth as the depth of the top surface of the sediment, wherein the difference of the two data is the thickness of the sediment. Although the method and the device are simple, the operation is carried out twice, the labor intensity is high, the efficiency is low, the vertical insertion of the measuring needle into the sediment cannot be ensured, and the measured data is inaccurate.
Therefore, the Chinese patent document discloses a sediment detection device named as a rotary excavation pile sediment thickness detection device (CN 109916354A), belonging to the improvement of a probe cake detection method: the floating plate with the through hole in the center is sleeved on the probe, the ratchets are arranged on two sides of the probe, and the pawls are arranged on two sides of the wall of the through hole, so that the floating plate can be used for positioning, sediment can be inserted by the aid of self weight of the probe, and sediment thickness measurement can be completed by one-time operation. Although the operation is simplified, the measurement efficiency is improved; however, the following disadvantages are also present:
1) in the sinking process of the probe, the ratchet and the pawl rub to slow down the inertia impact force on the sediment, so that the sediment with larger thickness cannot penetrate through to reach the bottom of the hole, and the measured data is inaccurate.
2) Due to the adoption of the pawl self-locking mechanism, once the probe is hindered by broken stones and cannot penetrate through sediments in the sinking process, the whole set of device is lifted to the ground, and the pawl mechanism is unlocked, and then the measurement can be carried out again; therefore, the defects of troublesome operation, low efficiency and high labor intensity still exist to some extent.
3) The sediment thickness of one position can only be detected in one operation, if need remove the measurement position then need carry the device to ground and carry out the pawl unblock, troublesome poeration, inefficiency.
4) The guide length of the through hole on the floating plate is short, so that the probe cannot be ensured to be vertically inserted into sediment, and the measurement error is large.
5) The pawl is easily blocked by mud in the pile hole, so that the pawl cannot normally act and the reliability is poor.
Disclosure of Invention
To the above-mentioned defect that prior art exists, the utility model aims at providing a simple structure, convenient operation, measurement of efficiency height, accurate, the reliable operation's of data stake hole sediment detection device.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the device comprises a measuring rod and a positioning seat, wherein the positioning seat is formed by a guide sleeve fixedly connected with a bottom plate and a top plate, two clamping blocks hinged to the surface of the top plate are respectively arranged on two sides of the guide sleeve, one end of each clamping block is connected with a first pull rope, and the other end of each clamping block can penetrate through a window formed in the wall of the guide sleeve to tightly hold the measuring rod in the guide sleeve; the top end of the measuring rod is fixed with a second pull rope.
Scales are carved on the measuring rod, and the lower end of the measuring rod is of an inverted cone structure. The measuring rod is of a stepped shaft structure with a thick upper part and a thin lower part, and the scales are positioned on the thin diameter section of the measuring rod; a limiting ring is fixed at the lower port of the guide sleeve, and the inner diameter of the limiting ring is larger than the diameter of the thin section of the measuring rod but smaller than the diameter of the thick section of the measuring rod. And a rubber pad is fixed on the contact surface of the clamping block and the measuring rod. A supporting rib plate is fixed between the bottom plate and the top plate. A plurality of water holes are distributed on the bottom plate and each supporting rib plate. The top end of the guide sleeve is provided with a guide extension pipe which is connected with the guide sleeve through a flange. And a plurality of water drainage holes are distributed on the pipe walls of the guide sleeve and the guide extension pipe.
Compared with the prior art, the utility model discloses owing to adopted above-mentioned technical scheme, consequently have following advantage:
1) the adoption of the guide sleeve can ensure that the measuring rod is vertically inserted into the sediment, and the measured data is accurate.
2) The clamping mechanism of the holding block is adopted to replace the traditional pawl self-locking mechanism, so that the friction resistance of the measuring rod in the sinking process can be reduced, and the inertia impact force of the measuring rod on the sediment is improved, therefore, the penetrating power is stronger, and the measured data is more accurate.
3) Utilize lever principle and adopt the clamp splice to lock the measuring stick, consequently even if be mingled with the rubble in the sediment and also can break it or strike it out through the mode that promotes the measuring stick several times repeatedly to eliminate and promote the trouble of whole set of device to ground unblock, both reduced intensity of labour, improved measurement of efficiency again.
4) In a similar way, the measuring rod is locked by utilizing the lever principle and the clamping block, so that the displacement measurement can be realized without lifting the whole device to the ground for unlocking, the labor intensity is reduced, and the measuring efficiency is improved.
5) The measuring rod adopts a stepped shaft structure with a thick upper part and a thin lower part, so that the weight of the measuring rod can be increased, and the resistance of slurry and sediment can be reduced, thereby increasing the inertia impact force.
6) A plurality of water drainage holes are formed in the guide sleeve, so that the resistance of slurry to the movement of the measuring rod similar to a plunger in the up-and-down movement process can be effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of fig. 1.
In the figure: the device comprises a second pull rope 1, a guide extension pipe 2, a water drainage hole 3, a window 4, a first pull rope 5, a clamping block 6, a support rib plate 7, a measuring rod 8, a bottom plate 9, a water through hole 10, a limiting ring 11, a guide sleeve 12, a top plate 13, a pin shaft 14 and a rubber pad 15.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2: the positioning seat is composed of a bottom plate 9 and a top plate 13 which are welded on a guide sleeve 12, and windows 4 are arranged on the pipe walls on the two sides of the guide sleeve 12. In the guide sleeve 12 there is a measuring rod 8, the top of which has a second pull cord 1 fixed by a suspension ring (not shown). A set of clamping devices are respectively arranged at two sides of the guide sleeve 12, each clamping device is composed of a hinged support (not shown in the figure) fixed on the surface of the top plate 13, a clamping block 6 arranged on the hinged support through a pin shaft 14, and a first pull rope 5 fixed at the outer end (the end far away from the guide sleeve 12) of the clamping block, and the inner end (the end near to the guide sleeve 12) of the clamping block 6 can pass through the corresponding window 4 under the action of the first pull rope to clamp the measuring rod 8; the shape of the inner end of the clamping block 6 is adapted to the shape of the surface of the measuring rod 8.
In order to facilitate the intuitive reading of the measurement data, scales (not shown) are marked on the measuring rod 8; in order to reduce the insertion resistance, the lower end of the measuring rod adopts an inverted cone structure.
In order to increase the inertial impact force of the measuring rod 8 and simultaneously reduce the resistance of the measuring rod to insert sediment, the measuring rod 8 adopts a stepped shaft-shaped structure with a thick upper part and a thin lower part, and the scale is positioned at the thin diameter section of the measuring rod 8.
In an extreme case, in order to avoid the measuring rod 8 from falling out of the lower end of the guide sleeve 12, a limit ring 11 is welded at the lower port of the guide sleeve 12, and the inner diameter of the limit ring is larger than the diameter of the thin section of the measuring rod 8 but smaller than the diameter of the thick section of the measuring rod 8.
In order to increase the frictional clamping force, a rubber pad 15 is fixed on the contact surface (i.e. the inner end surface) of the clamping block 6 and the measuring rod 8.
In order to increase the rigidity of the positioning seat, four supporting rib plates 7 are fixed between the bottom plate 9 and the top plate 13, and all the supporting rib plates 7 are uniformly distributed around the guide sleeve 12.
In order to reduce the resistance of slurry to the device in the descending process and ensure the horizontal sinking of the positioning seat and reduce the weight, a plurality of water through holes 10 are uniformly distributed on the bottom plate 9 and each supporting rib plate 7.
In the measuring process, in order to increase the impact force of the measuring rod 8 on the sediment, the impact force can be generally realized by increasing the lifting stroke of the measuring rod 8; in order to prevent the measuring rod 8 from falling out of the top end of the guide sleeve 12, a guide extension tube 2, which is connected to the top end of the guide sleeve by a flange, is provided.
In order to reduce the resistance of the measuring rod 8 to the movement of the mud in the up-and-down movement process, which is similar to the movement of a plunger, a plurality of water drainage holes 3 are distributed on the pipe wall of the guide sleeve 12 and the pipe wall of the guide extension pipe 2.
When the positioning device is used, the positioning seat and a measuring rod 8 (the measuring rod is tightly held by two clamping blocks 6) positioned in the guide sleeve are hung to the bottom of a pile hole by using the two first pull ropes 5, and the positioning seat is adjusted to be horizontal by the two first pull ropes 5; then two first pull ropes 5 are loosened, and the two clamping blocks 6 also loosen the measuring rod 8 immediately; the measuring rod 8 is lifted to a certain height by the second pull rope 1, and then the second pull rope 1 is loosened, so that the measuring rod 8 freely falls along the guide sleeve 12 and is inserted into the sediment. Repeatedly lifting the measuring rod 8 until the front end of the measuring rod 8 touches the rock layer at the bottom of the pile hole; then, the two clamping blocks 6 are driven by the two first pull ropes 5 to clamp and lock the measuring rod 8, the positioning seat is lifted to the ground by the two first pull ropes 5, and the thickness of the sediment can be directly read through the scales.
Claims (8)
1. The utility model provides a stake hole sediment detection device, includes measuring stick and positioning seat, its characterized in that: the positioning seat is composed of a guide sleeve (12) fixedly connected with a bottom plate (9) and a top plate (13), two sides of the guide sleeve are respectively provided with a clamping block (6) hinged to the surface of the top plate (13), one end of each clamping block (6) is connected with a first pull rope (5), and the other end of each clamping block (6) can penetrate through a window (4) formed in the pipe wall of the guide sleeve (12) to tightly hold a measuring rod (8) positioned in the guide sleeve; the top end of the measuring rod is fixed with a second pull rope (1).
2. The pile hole sediment detection device of claim 1, characterized in that: scales are carved on the measuring rod (8), and the lower end of the measuring rod is of an inverted cone structure.
3. The pile hole sediment detection device of claim 2, characterized in that: the measuring rod (8) is of a stepped shaft structure with a thick upper part and a thin lower part, and the scales are positioned on the thin diameter section of the measuring rod (8); a limiting ring (11) is fixed at the lower port of the guide sleeve (12), and the inner diameter of the limiting ring is larger than the diameter of the thin section of the measuring rod (8) but smaller than the diameter of the thick section of the measuring rod (8).
4. The pile hole sediment detection device of claim 1, characterized in that: a rubber pad (15) is fixed on the contact surface of the clamping block (6) and the measuring rod (8).
5. The pile hole sediment detection device of claim 1, characterized in that: a supporting rib plate (7) is fixed between the bottom plate (9) and the top plate (13).
6. The pile hole sediment detection device of claim 1, characterized in that: a plurality of water through holes (10) are distributed on the bottom plate (9) and each supporting rib plate (7).
7. The pile hole sediment detection device of any one of claims 1 to 6, characterized in that: the top end of the guide sleeve (12) is provided with a guide extension pipe (2) which is connected with the guide sleeve through a flange.
8. The pile hole sediment detection device of claim 7, characterized in that: a plurality of water drainage holes (3) are distributed on the pipe walls of the guide sleeve (12) and the guide extension pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021225940.8U CN212742660U (en) | 2020-06-29 | 2020-06-29 | Pile hole sediment detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021225940.8U CN212742660U (en) | 2020-06-29 | 2020-06-29 | Pile hole sediment detection device |
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| Publication Number | Publication Date |
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| CN212742660U true CN212742660U (en) | 2021-03-19 |
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| CN202021225940.8U Active CN212742660U (en) | 2020-06-29 | 2020-06-29 | Pile hole sediment detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833745A (en) * | 2021-03-28 | 2021-05-25 | 遵义师范学院 | Wide-range multi-probe sediment thickness detection device |
| CN113117999A (en) * | 2021-04-19 | 2021-07-16 | 广西天正钢结构有限公司 | Coating process for anticorrosive coating on surface of steel structure |
-
2020
- 2020-06-29 CN CN202021225940.8U patent/CN212742660U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833745A (en) * | 2021-03-28 | 2021-05-25 | 遵义师范学院 | Wide-range multi-probe sediment thickness detection device |
| CN113117999A (en) * | 2021-04-19 | 2021-07-16 | 广西天正钢结构有限公司 | Coating process for anticorrosive coating on surface of steel structure |
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