Foundation pile bottom detection device

Abstract

The foundation pile bottom detection device comprises a measuring rod, a bottom plate and a balancing weight, a center hole is formed in the center of the measuring rod, guide rods are arranged on the two sides of the center hole, the lower ends of the guide rods are fixedly connected with the bottom plate, limiting blocks are arranged at the upper ends of the guide rods, and the guide rods are perpendicular to the bottom plate; the measuring rod and the balancing weight are both in sliding connection with the guide rod, the lower end of the measuring rod penetrates through the center hole, and the lower end of the balancing weight is connected with the measuring rod; the upper part of the measuring rod is provided with a gas cylinder, the lower part of the measuring rod is provided with a plurality of gas outlets, and the middle part of the measuring rod is provided with a hollow part. The gas cylinder is installed on the measuring rod, air can be blown into the air outlet hole in the lower end of the measuring rod through the gas cylinder during measurement, sediment is soft, the measuring rod penetrates through a sediment layer to reach the bottom of the foundation pile under the gravity effect of the balancing weight, the detection accuracy is improved, the measuring rod is locked through the locking rod, and the measuring rod is convenient to use. The sediment thickness can be conveniently obtained by reading the scales on the measuring rod, and the detection speed is improved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering construction detection, and in particular to a foundation pile bottom detection device. Background Art

[0002] At present, in the construction of some large-scale buildings such as bridges and high-rise buildings, foundation piles are usually installed to ensure the reliability of the foundation. During the construction of the foundation piles, it is necessary to dig pile foundation holes in the foundation and then cast the foundation piles in the pile foundation holes. In order to ensure the bearing capacity of the foundation piles, it is necessary to detect the thickness of the sediment at the bottom of the pile foundation hole before casting the foundation piles to prevent the sediment from producing a cushion effect that affects the bearing capacity of the foundation piles. Since the depth of the pile foundation hole is more than 30 meters, and in order to prevent collapse, the pile foundation hole is also filled with mud, and it is not easy to measure the sediment thickness manually. For this reason, people have designed some sediment thickness detection devices. For example, Chinese patent application number 202321613462.1 discloses a sediment thickness detection device at the bottom of a bridge pile foundation. It includes a measuring rod, a positioning plate, a limiting ring, an X-shaped clamp, a connecting rod, a weight block, a limiting rope, and a lifting rope. The measuring rod is provided with scale lines, and an assembly hole is provided at the center of the positioning plate. There are two connecting rods, which are symmetrically arranged on both sides of the assembly hole of the positioning plate, and the lower ends of the connecting rods are fixedly connected to the positioning plate. The limiting ring is correspondingly arranged above the assembly hole of the positioning plate and fixedly connected to the two connecting rods. The measuring rod is movably inserted into the assembly hole and the limiting ring of the positioning plate. The pin shaft of the X-shaped clamp is connected to the two connecting rods and is located directly above the limiting ring. The two lower arms of the X-shaped clamp are correspondingly located on both sides of the measuring rod. The limiting rope is connected between the two upper arms of the X-shaped clamp, and the lifting rope is connected to the limiting rope through a connecting ring. The weight block is arranged on the top of the measuring rod. This device only presses down the measuring rod by pressing the weight block, and the downward force generated is relatively low. When encountering some relatively hard sediment, it cannot be inserted and continue to extend into the bottom of the foundation pile. Therefore, a foundation pile bottom detection device is needed, which has a gas cylinder on the measuring rod. During measurement, bubbles are generated at the end of the measuring rod to loosen the sediment, making it easier for the measuring rod to pass through the sediment layer, thereby improving the accuracy of the detection. Utility Model Content

[0003] In order to solve the above problems, the present application proposes a foundation pile bottom detection device, which is provided with a gas cylinder on the measuring rod. During measurement, bubbles are generated at the end of the measuring rod, which makes the sediment loose, making it easier for the measuring rod to pass through the sediment layer, thereby improving the accuracy of detection.

[0004] This application is achieved through the following technical solutions:

[0005] The present application proposes a foundation pile bottom detection device, comprising: a measuring rod, a base plate, and a counterweight block. A center hole is provided in the center of the measuring rod, guide rods are provided on both sides of the center hole, the lower end of the guide rod is fixedly connected to the base plate, and a limit block is provided at the upper end of the guide rod, and the guide rod is perpendicular to the base plate; the measuring rod and the counterweight block are both slidably connected to the guide rod, and the lower end of the measuring rod passes through the center hole, and the lower end of the counterweight block is connected to the measuring rod; a gas cylinder is installed on the upper part of the measuring rod, a plurality of air outlet holes are provided at the lower part of the measuring rod, and a hollow part is provided in the middle part of the measuring rod, and the air outlet holes are connected to the gas cylinder through the hollow part.

[0006] Furthermore, a valve core is provided on the hollow portion, a through hole is provided in the middle of the valve core, the valve core crosses the measuring rod and the hollow portion, one end of the valve core is connected to the measuring rod through a first spring, and a bayonet is provided at the other end of the valve core.

[0007] Furthermore, a connecting ring is provided on the upper portion of the counterweight block, a first connecting rope is provided on the connecting ring, and a second connecting rope is provided on the bayonet.

[0008] Furthermore, a thread is provided on the upper portion of the hollow portion, and the gas cylinder is connected to the hollow portion via the thread.

[0009] Furthermore, a plurality of inverted teeth are provided at the lower end of the measuring rod.

[0010] Furthermore, a sleeve is provided at the bottom of the base plate, a locking rod is provided on the sleeve, one end of the locking rod is connected to the sleeve through a second spring, and the other end of the locking rod is clamped on the inverted tooth.

[0011] The beneficial effects of the present application are as follows: by installing a gas cylinder on the measuring rod, air can be blown into the air outlet at the lower end of the measuring rod through the gas cylinder during measurement, so that the sediment is loosened, and under the action of the gravity of the counterweight block, the measuring rod passes through the sediment layer to reach the bottom of the foundation pile, thereby improving the accuracy of the detection, and the measuring rod is locked in position by the locking rod, which makes it convenient to obtain the sediment thickness by reading the scale on the measuring rod, thereby improving the detection speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a structural diagram of the valve core of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the inverted tooth of the utility model;

[0015] In the figure: 1-measuring rod, 2-base plate, 3-counterweight, 4-guide rod, 5-limiting block, 6-gas cylinder, 7-air outlet, 8-hollow part, 9-valve core, 10-first spring, 11-bayonet, 12-first connecting rope, 13-second connecting rope, 14-inverted tooth, 15-sleeve, 16-locking rod, 17-second spring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the said features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0019] like Figures 1 to 3 As shown, an embodiment of the utility model provides a foundation pile bottom detection device, including: a measuring rod 1, a base plate 2, and a counterweight 3. A center hole is provided in the center of the measuring rod 1, and guide rods 4 are provided on both sides of the center hole. The lower end of the guide rod 4 is fixedly connected to the base plate 2, and a limit block 5 is provided at the upper end of the guide rod 4. The guide rod 4 is perpendicular to the base plate 2; the measuring rod 1 and the counterweight 3 are both slidably connected to the guide rod 4, and the lower end of the measuring rod 1 passes through the center hole, and the lower end of the counterweight 3 is connected to the measuring rod 1; a gas cylinder 6 is installed on the upper part of the measuring rod 1, and a plurality of air outlet holes 7 are provided at the lower part of the measuring rod 1. A hollow part 8 is provided in the middle part of the measuring rod 1, and the air outlet hole 7 is connected to the gas cylinder 6 through the hollow part 8.

[0020] When measuring the sediment thickness at the bottom of the foundation pile, use the first connecting rope 12 to connect with the connecting ring on the counterweight 3, and then slowly put it into the pile foundation hole of the foundation pile. After reaching the bottom of the pile foundation hole, the contact area of ​​the bottom plate 2 is large, so that the bottom plate 2 stays on the upper part of the sediment layer, and then continue to lower a part of the first connecting rope 12. At this time, under the action of the gravity of the counterweight 3 and the measuring rod 1, the measuring rod 1 slides downward along the guide rod 4, and the lower end of the measuring rod 1 is inserted into the sediment layer. Then use the second connecting rope 13 to pull the pin 11 so that the pin 11 is pulled out, and the valve core 9 slides under the action of the first spring 1, so that the through hole on the valve core 9 slides into the hollow part 8. At this time, the hollow part 8 is in a connected state, and the pressure in the gas cylinder 6 is The compressed air passes through the hollow part 8 and is discharged from the air outlet 7. Under the action of the bubble turnover, the sediment layer becomes loose, which facilitates the descent of the counterweight 3 and the measuring rod 1, so that the lower end of the measuring rod 1 reaches the bottom of the pile foundation hole. After waiting for a while, the first connecting rope 12 is pulled to make the measuring rod 1 and the counterweight 3 rise. Under the action of the locking rod 16 and the inverted tooth 14, the measuring rod 1 can only move in one direction relative to the sleeve 15. When pulling up, the relative position of the measuring rod 1 and the sleeve 15 remains unchanged, so that the bottom plate 2 is lifted by the locking rod 16 and the inverted tooth 14. After lifting, by reading the scale on the measuring rod 1, the distance between the lower end of the measuring rod 1 and the bottom of the bottom plate 2 can be known, thereby knowing the thickness of the sediment layer.

[0021] In a preferred embodiment, a valve core 9 is provided on the hollow portion 8, and a through hole is provided in the middle of the valve core 9. The valve core 9 crosses the measuring rod 1 and the hollow portion 8. One end of the valve core 9 is connected to the measuring rod 1 through a first spring 10, and the other end of the valve core 9 is provided with a bayonet 11. The bayonet 11 can be fixed in position so that the valve core 9 blocks the hollow portion 8. When the bayonet 11 is pulled out, it moves to the left under the action of the first spring 10, so that the through hole on the valve core 9 is located in the middle, thereby making the hollow portion 8 in a connected state. The compressed air on the gas cylinder 6 passes through the hollow portion 8 and is discharged from the air outlet 7 at the lower end of the measuring rod 1, so that the sediment layer becomes loose, which facilitates the descent of the counterweight block 3 and the measuring rod 1, so that the lower end of the measuring rod 1 reaches the bottom of the pile foundation hole.

[0022] In a specific embodiment, a connecting ring is provided on the upper part of the counterweight 3, and a first connecting rope 12 is provided on the connecting ring, which facilitates lifting or lowering the entire device through the first connecting rope 12. A second connecting rope 13 is provided on the bayonet 11. After pulling the second connecting rope 13, the bayonet 11 can be pulled out, so that the valve core 9 is reset and the hollow part 8 is opened.

[0023] Preferably, a thread is provided on the upper portion of the hollow portion 8, and the gas cylinder 6 is connected to the hollow portion 8 via the thread. The gas cylinder 6 uses a small gas cylinder currently available on the market that is mainly used for air guns and coffee machines. After being screwed in, the seal at the end of the gas cylinder 6 will be punctured by the sharp portion on the hollow portion 8, allowing the compressed air in the gas cylinder 6 to enter the hollow portion 8.

[0024] Specifically, a plurality of inverted teeth 14 are provided at the lower end of the measuring rod 1 so as to lock the measuring rod 1 when it is lifted up.

[0025] Preferably, a sleeve 15 is provided at the bottom of the base plate 2, and a locking rod 16 is provided on the sleeve 15. One end of the locking rod 16 is connected to the sleeve 15 through a second spring 17, and the other end of the locking rod 16 is clamped on the inverted tooth 14, so that when the measuring rod 1 moves from top to bottom, the locking rod 16 can be pushed open by the inclined surface on the inverted tooth 14, and when it moves from bottom to top, it is locked by the locking rod 16 and the inverted tooth 14, preventing the measuring rod 1 and the sleeve 15 from moving relative to each other when lifting, thereby affecting the detection results.

[0026] Specifically, a plurality of through holes are provided on the bottom plate 2 so that the air discharged from the air outlet 7 can be discharged through the through holes, thereby preventing bubbles from gathering at the bottom of the bottom plate 2 and affecting the detection results.

[0027] Of course, the present application may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present application.

Claims

1. A foundation pile bottom detection device, characterized in that: include: A measuring rod (1), a base plate (2), and a counterweight (3); a center hole is provided at the center of the measuring rod (1); guide rods (4) are provided on both sides of the center hole; the lower end of the guide rod (4) is fixedly connected to the base plate (2); a limit block (5) is provided at the upper end of the guide rod (4); the guide rod (4) is perpendicular to the base plate (2); the measuring rod (1) and the counterweight (3) are both slidably connected to the guide rod (4); the lower end of the measuring rod (1) passes through the center hole; the lower end of the counterweight (3) is connected to the measuring rod (1); a gas cylinder (6) is installed on the upper part of the measuring rod (1); a plurality of air outlet holes (7) are provided at the lower part of the measuring rod (1); a hollow part (8) is provided in the middle of the measuring rod (1); the air outlet holes (7) are connected to the gas cylinder (6) through the hollow part (8).

2. A foundation pile bottom detection device according to claim 1, characterized in that: A valve core (9) is provided on the hollow portion (8), a through hole is provided in the middle of the valve core (9), the valve core (9) crosses the measuring rod (1) and the hollow portion (8), one end of the valve core (9) is connected to the measuring rod (1) via a first spring (10), and a bayonet (11) is provided at the other end of the valve core (9).

3. A foundation pile bottom detection device according to claim 2, characterized in that: A connecting ring is provided on the upper portion of the counterweight (3), a first connecting rope (12) is provided on the connecting ring, and a second connecting rope (13) is provided on the bayonet (11).

4. A foundation pile bottom detection device according to claim 2, characterized in that: The upper portion of the hollow portion (8) is provided with a thread, and the gas cylinder (6) is connected to the hollow portion (8) via the thread.

5. The foundation pile bottom detection device according to claim 1, characterized in that: The lower end of the measuring rod (1) is provided with a plurality of inverted teeth (14).

6. The foundation pile bottom detection device according to claim 5, characterized in that: A sleeve (15) is provided at the bottom of the base plate (2), and a locking rod (16) is provided on the sleeve (15). One end of the locking rod (16) is connected to the sleeve (15) through a second spring (17), and the other end of the locking rod (16) is clamped on the inverted tooth (14).

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