Pile foundation base drill rod detection device

Abstract

The utility model discloses a pile foundation base drill rod detection device which comprises a bottom plate and further comprises a square installation frame which is arranged on the bottom plate, is a square frame and comprises four vertical rods and an installation plate arranged on the tops of the vertical rods. The hammer pad sleeves the four vertical rods in a sliding manner, a driving hammer is arranged above the hammer pad, the lower part of the hammer pad is connected to the sounding rod, and a sounding cone is arranged at the bottom of the sounding rod; a vertical through groove is also formed in the bottom plate under the sounding rod; the distance sensor is arranged below the hammer pad, and a target of the distance sensor is arranged on the bottom plate under the distance sensor; the lifting gear is axially and horizontally arranged on the mounting plate and is driven by a stepping motor to rotate; and the sawtooth lifting rod is arranged above the driving hammer and is meshed with the lifting gear. According to the device, the lifting gear is driven by the stepping motor to rotate and matched with distance detection of the distance sensor, so that the rising distance of the driving hammer every time is accurately controlled, the initial height of the driving hammer falling every time is consistent, the accuracy of penetration depth detection every time is ensured, and manual errors are prevented from being introduced.

Description

Technical Field

[0001] The utility model relates to the field of pile foundation construction, and particularly to a pile foundation base sounding device. Background Art

[0002] Base sounding is to detect the soil layer conditions or roughly estimate the allowable bearing capacity of the soil layer according to the number of blows required for a certain penetration depth. It is a simple detection method to check whether there are pits, ancient tombs, ancient wells, air raid shelters and underground buried objects, etc. at the pile foundation base.

[0003] At present, after the pile foundation is drilled on the ground surface, generally, the inspectors conduct sounding detection at the bottom of the pile. Specifically, the hammer is lifted to a certain height manually and then allowed to fall freely, and the penetration depth of the sounding instrument and the number of times the hammer is lifted are recorded each time, so as to obtain the required data. However, manually lifting the hammer cannot ensure that the initial falling height of the hammer is the same each time, and at the same time, the penetration depth of the traditional sounding instrument is recorded by manual reading, which has certain manual errors. Therefore, it is easy to have a certain impact on the accuracy of the sounding results.

[0004] Therefore, a pile foundation base sounding device is proposed to solve the above technical problems. Summary of the Utility Model

[0005] The technical problem solved by the utility model is that in the prior art, in the existing pile foundation base sounding process, the hammer is lifted manually, and it is impossible to determine that the initial falling height of the hammer is the same each time. At the same time, the manual reading of the penetration depth will also bring errors, resulting in inaccurate sounding results.

[0006] To solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0007] A pile foundation base sounding device includes a bottom plate, and further includes:

[0008] A square mounting frame is arranged on the bottom plate. It is a square frame and includes four vertical rods and a mounting plate at the top of the vertical rods;

[0009] A hammer pad is sleeved on the four vertical rods in a sliding manner. There is a hammer above it and a sounding rod is connected below it. A sounding cone is provided at the bottom of the sounding rod; a vertical through groove is also opened on the bottom plate directly below the sounding rod;

[0010] A distance sensor is arranged below the hammer pad, and the target of the distance sensor is arranged on the bottom plate directly below the distance sensor;

[0011] A lifting gear is arranged horizontally axially on the mounting plate and is driven to rotate by a stepping motor;

[0012] A serrated lifting rod is arranged above the hammer and meshes with the lifting gear.

[0013] Specifically, it further includes jacking cylinders arranged at the four corners of the lower surface of the bottom plate, and the side wall of the bottom plate is also provided with jacking cylinders horizontally extending outwards.

[0014] Furthermore, an angle sensor is provided on the bottom plate.

[0015] Specifically, a first monitoring probe is provided below the mounting plate, and a second monitoring probe is provided on the sounding cone.

[0016] Specifically, it further includes a gantry spanning both sides of the pile foundation hole. An electric hoist is provided in the middle of the gantry. A main wire rope is provided on the hook of the electric hoist, and the lower end of the main wire rope is divided into four branch wire ropes. It also includes a spreader. The spreader includes a square hanging frame. The four corners of the top of the hanging frame are respectively connected to the four branch wire ropes, and the four corners of the bottom are respectively provided with four vertical suspension rods. The bottom of the vertical suspension rods is hooked to four lifting lugs on the mounting plate through hooks.

[0017] Furthermore, moving wheels are provided at the bottom of the gantry.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects: The utility model drives the lifting gear to rotate through a stepping motor, and cooperates with the distance detection of the distance sensor, so as to accurately control the rising distance of each hammer strike, ensure that the initial height of each hammer strike when falling is consistent, and can also ensure the accuracy of each penetration depth detection, avoiding the introduction of manual errors. At the same time, a square mounting frame is arranged outside the hammer, and the hammer cushion slides on the vertical rod of the mounting frame, so as to realize the control of the falling angle of the hammer. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the device of the utility model.

[0020] Figure 2 It is a schematic diagram of the hammer and the lower structure.

[0021] The interpretations of each label in the figure are as follows: bottom plate - 1; square mounting frame - 2; vertical rod - 3; mounting plate - 4; hammer cushion - 5; hammer - 6; sounding rod - 7; sounding cone - 8; vertical through groove - 9; distance sensor - 10; target - 11; lifting gear - 12; serrated lifting rod - 13; jacking cylinder - 14; jacking cylinder - 15; angle sensor - 16; first monitoring probe - 17; second monitoring probe - 18; gantry - 19; electric hoist - 20; main wire rope - 21; branch wire rope - 22; hanging frame - 23; vertical suspension rod - 24; lifting lug - 25. Detailed Embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model, so as to have a further understanding of the concept of the present utility model, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought about.

[0023] As Figures 1 to 2 shown, a pile foundation base sounding device includes a bottom plate 1, and further includes:

[0024] A square mounting frame 2, which is arranged on the bottom plate 1 and is a square frame, including four vertical rods 3 and a mounting plate 4 at the top of the vertical rods 3;

[0025] A hammer cushion 5, which is slidably sleeved on the four vertical rods 3, with a striking hammer 6 above it and connected to a sounding rod 7 below. A sounding cone 8 is provided at the bottom of the sounding rod 7; a vertical through groove 9 is also opened on the bottom plate 1 directly below the sounding rod 7;

[0026] A distance sensor 10, which is arranged below the hammer cushion 5, and a target 11 of the distance sensor 10 is arranged on the bottom plate 1 directly below the distance sensor 10;

[0027] A lifting gear 12, which is axially horizontally arranged on the mounting plate 4 and is driven to rotate by a stepping motor;

[0028] A serrated lifting rod 13, which is arranged above the striking hammer 6 and meshes with the lifting gear 12.

[0029] In the present utility model, the main working principle is that first, a square mounting frame 2 is arranged on the bottom plate 1 as the lifting component of the striking hammer 6. The hammer cushion 5 is sleeved on the four vertical rods 3 of the square mounting frame 2 and slides, so that the striking hammer 6 can move vertically along the vertical rods 3, and drives the sounding rod 7 and the sounding cone 8 to move vertically together, so that the sounding rod 7 with the sounding cone 8 can freely pass through the vertical through groove 9. Specifically, each upward movement of the striking hammer 6 is driven by the rotation of the lifting gear 12 driven by the stepping motor, driving the serrated lifting rod 13. Therefore, the lifting height can be accurately controlled by the stepping motor.

[0030] Specifically, the difference between the distance between the position of the distance sensor 10 after the striking hammer 6 falls and the target 11 and the distance between the position of the distance sensor 10 in the initial state is calculated to determine the falling distance and penetration depth of each strike of the striking hammer 6, and then controlling the lifting of the same height by the stepping motor can ensure that the initial falling height of the striking hammer is consistent.

[0031] During this process, the distance between the distance sensor 10 and the target 11 is detected, and the penetration depth of each time is recorded to avoid introducing human errors during manual observation.

[0032] Specifically, as the number of times the hammer 6 falls increases, each time the hammer strikes, the feeler rod 7 and the feeler cone 8 will penetrate downward by one end, causing the reading of the distance sensor 10 to change continuously. By calculating the difference between the reading at the n+1th penetration and the reading at the nth penetration, the penetration depth of the feeler rod 7 and the feeler cone 8 caused by the hammer falling this time can be determined, thereby avoiding errors caused by direct manual readings and resulting in inaccurate detection results.

[0033] As a preferred embodiment, it also includes lifting cylinders 14 arranged at the four corners of the lower surface of the base plate 1, and the side wall of the base plate 1 is also provided with a supporting cylinder 15 extending horizontally outward.

[0034] In this embodiment, lifting cylinders 14 are further provided at the four corners of the lower surface of the bottom plate 1 to adjust the horizontal state of the bottom plate 1 in the initial state, so as to quickly provide the bottom plate 1 with an angle capable of performing the probing operation. After the initial angle is determined, the lifting cylinders 15 are extended horizontally outward to support the pit wall, thereby positioning the bottom plate 1 in the initial state, preventing the bottom plate 1 from tilting, and effectively increasing the stability of the device of the utility model.

[0035] As a further embodiment, an angle sensor 16 is provided on the base plate 1 .

[0036] In this embodiment, by setting an angle sensor 16 on the base plate 1, it is convenient to cooperate with the lifting cylinder 14 to quickly adjust the angle of the base plate 1 to an appropriate range in the initial state, and it is also possible to monitor the angle of the base plate 1 at all times during the drilling process to avoid safety problems caused by device deviation.

[0037] As a preferred embodiment, a first monitoring probe 17 is provided below the mounting plate 4 , and a second monitoring probe 18 is provided on the probe cone 8 .

[0038] In this embodiment, by setting a first monitoring probe 17 under the mounting plate 4, the drilling situation of the entire device can be monitored in real time, so that the drilling situation inside the foundation pit can be grasped at any time. At the same time, the second monitoring probe 18 is set on the sounding cone 8 to observe the surrounding rock image data within the sounding depth range.

[0039] As a preferred embodiment, it also includes a gantry 19 spanning both sides of the pile foundation hole, an electric hoist 20 is provided in the middle of the gantry 19, a main steel wire rope 21 is provided on the hook of the electric hoist 20, and the lower end of the main steel wire rope 21 is divided into four branch steel wire ropes 22; it also includes a sling, the sling includes a square hanging frame 23, the four top corners of the hanging frame 23 are respectively connected to the four branch steel wire ropes 22, and four vertical hanging rods 24 are respectively provided at the four bottom corners, and the bottom of the vertical hanging rod 24 is hung to four ears 25 on the mounting plate 4 through hooks.

[0040] In this embodiment, a structure for hoisting the device of the present utility model into the pile foundation pit is provided. Among them, the gantry 19 serves as the overall hoisting load-bearing component and is located on both sides outside the pile foundation opening. The electric hoist 20 and the main wire rope 21 are used as the main working parts, so that after the four vertical suspension rods 24 at the bottom of the hanging frame 23 are connected to the four lifting lugs 25 on the mounting plate 4 through hooks, they can be slowly hoisted from outside the pile foundation opening smoothly and lowered to the bottom of the pile foundation pit smoothly.

[0041] As a further embodiment, the bottom of the gantry 19 is provided with moving wheels.

[0042] In this embodiment, by providing moving wheels at the bottom of the gantry 19, it is possible to move quickly and conveniently between multiple foundation pits, facilitating the quick lowering of the device of the present utility model and the hoisting operation after the sounding is completed.

[0043] The "connection" and "fixation" mentioned in the description of the present utility model can be fixed connection, machining, welding, or mechanical connection. The specific meanings of the above terms in the present utility model should be understood according to the specific circumstances.

[0044] In the description of the present utility model, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying a specific orientation that the device or component must have. Therefore, it cannot be understood as a limitation to the present utility model.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A pile foundation base drilling device, comprising a base plate (1), characterized in that: Also includes: A square mounting frame (2) is arranged on the bottom plate (1) and is a square frame, comprising four vertical poles (3) and a mounting plate (4) on the top of the vertical poles (3); A hammer pad (5) is slidably sleeved on the four vertical rods (3), a hammer (6) is provided on the upper part, and a feeler rod (7) is connected to the lower part, and a feeler cone (8) is provided at the bottom of the feeler rod (7); a vertical through groove (9) is also provided on the bottom plate (1) directly below the feeler rod (7); A distance sensor (10) is arranged below the hammer pad (5), and a target (11) of the distance sensor (10) is arranged on a bottom plate (1) directly below the distance sensor (10); A lifting gear (12) is axially and horizontally arranged on the mounting plate (4) and driven to rotate by a stepping motor; The sawtooth lifting rod (13) is arranged above the hammer (6) and meshes with the lifting gear (12).

2. A pile foundation base drilling device as claimed in claim 1, characterized in that: It also includes lifting cylinders (14) arranged at the four corners of the lower surface of the base plate (1), and the side wall of the base plate (1) is also provided with a lifting cylinder (15) extending horizontally outward.

3. A pile foundation base drilling device as claimed in claim 2, characterized in that: An angle sensor (16) is provided on the base plate (1).

4. A pile foundation base drilling device as claimed in claim 1, characterized in that: A first monitoring probe (17) is provided below the mounting plate (4), and a second monitoring probe (18) is provided on the probe cone (8).

5. A pile foundation base drilling device as claimed in claim 1, characterized in that: It also includes a gantry (19) spanning across both sides of the pile foundation hole, wherein an electric hoist (20) is provided in the middle of the gantry (19), and a main steel wire rope (21) is provided on the hook of the electric hoist (20), and the lower end of the main steel wire rope (21) is divided into four branch steel wire ropes (22); it also includes a sling, which includes a square sling frame (23), the top four corners of the sling frame (23) are respectively connected to the four branch steel wire ropes (22), and the bottom four corners are respectively provided with four vertical sling rods (24), and the bottom of the vertical sling rod (24) is hung to four lifting ears (25) on the mounting plate (4) through hooks.

6. A pile foundation base drilling device as claimed in claim 5, characterized in that: The bottom of the gantry (19) is provided with moving wheels.

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