Foundation pile high strain detection device

Abstract

The utility model discloses a foundation pile high strain detection device which comprises a detection frame, an electric winch fixedly installed at the upper end of the detection frame, a detection heavy hammer arranged in the middle of the detection frame, a balance weight mechanism arranged at the upper end of a bottom plate and used for increasing the weight of the detection heavy hammer, and a connecting rod connected with the electric winch and the detection heavy hammer. The connecting rods are fixedly connected to the left side and the right side of the upper end of the top plate respectively, an up-down sliding structure is formed between the connecting rods and the detection frame, supporting columns are fixedly connected to the left side and the right side of the upper end of the top plate, and the supporting columns are inserted into the middles of the side plates. According to the foundation pile high strain detection device, the device can be conveniently moved without the help of external lifting equipment, a positioning pin is inserted into the ground, the device can be conveniently positioned in the use process, and the stability of the device in the use and detection process is improved; and the weight of the detection heavy hammer can be conveniently increased according to actual detection conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation detection, in particular to a high-strain detection device for pile foundation. Background Technique

[0002] A pile foundation is a professional term in building structures, referring to a single pile in a pile foundation. It transfers all or part of the load of a building to the foundation soil through a vertical or inclined foundation member set in the soil. Its main function is to penetrate soft, highly compressible soil layers or water and transfer the load borne by the pile to a harder, denser, or less compressible foundation bearing layer. The high-strain method uses a heavy hammer to impact the top of the pile and measures the velocity and force time history curves at the top of the pile, and analyzes through wave theory;

[0003] For example, the patent authorization announcement number is CN207331784U, and the authorization announcement date is May 8, 2018. It discloses a high-strain detection device for pile foundation, which includes a guiding frame, a moving cross beam, a heavy hammer, and an automatic hook release device. The guiding frame consists of a square-shaped base and a portal-shaped vertical frame; the moving cross beam is fixed to the columns of the portal-shaped vertical frame by pins; the automatic hook release device consists of a hydraulic jack fixed on the moving cross beam, a fixed rope locking hole, and a movable rope locking pin fixed at the end of the piston of the hydraulic jack; the hydraulic jack is connected to an electric oil pump through a quick coupling and an oil pipe; the heavy hammer is hung under the moving cross beam by a steel wire rope locked by the movable rope locking pin, and a component cooperating with the columns of the portal-shaped vertical frame is provided on the heavy hammer, so that the heavy hammer can only move up and down along the columns. The utility model effectively prevents the eccentric force brought by the hammering hook release device, prevents hammering eccentricity, the height of the moving cross beam is adjustable, meets the hammering height, and ensures the detection quality. The hammering hook release process does not require the participation of a crane, avoiding the impact force of the hammering hook release on the hoisting machinery and protecting the hoisting machinery;

[0004] However, in the prior art, it is necessary to rely on external hoisting equipment for movement during movement. Especially during batch detection, the movement operation is relatively inconvenient, it is not convenient to change the weight of the heavy hammer according to actual detection requirements, and the stability of the heavy hammer during the lifting process is poor. For example, the above-listed comparative patent has this problem;

[0005] Therefore, we propose a high-strain detection device for pile foundation to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a high-strain detection device for pile foundation to solve the problems in the prior art that during movement, it is necessary to rely on external hoisting equipment for movement. Especially during batch detection, the movement operation is relatively inconvenient, it is not convenient to change the weight of the heavy hammer according to actual detection requirements, and the stability of the heavy hammer during the lifting process is poor.

[0007] To achieve the above object, the utility model provides the following technical solution: a high-strain detection device for foundation piles, comprising a detection frame, an electric winch fixedly installed at the upper end of the detection frame, and a detection weight arranged in the middle of the detection frame;

[0008] It further includes:

[0009] A counterweight mechanism, which is arranged at the upper end of the bottom plate, and the counterweight mechanism is used to increase the weight of the detection weight;

[0010] Connecting rods, which are respectively fixedly connected to the left and right sides of the upper end of the top plate, and a vertical sliding structure is formed between the connecting rods and the detection frame. Support columns are fixedly connected to the left and right sides of the upper end of the top plate, and the support columns are inserted into the middle of the side plates.

[0011] Preferably, moving wheels are installed at the left and right ends and the rear end of the lower end of the detection frame, and positioning pins for positioning are inserted at the edge of the detection frame, and the lower ends of the positioning pins are inserted into the ground.

[0012] Preferably, a bottom plate is fixedly connected to the upper end of the detection weight, and fixing columns are fixedly connected to the edge of the upper end of the bottom plate. The fixing columns are arranged at equal angles on the upper end of the bottom plate, and a top plate is fixedly connected to the upper ends of the fixing columns.

[0013] Preferably, the counterweight mechanism includes a counterweight plate for increasing weight, a fixing plate for pressing and fixing, and a fixing bolt with a limiting function.

[0014] Preferably, the counterweight plate is placed on the upper end of the bottom plate, and the upper counterweight plate is in close contact with the fixing plate. The fixing plate is connected to the fixing column by a card slot, and the fixing plate and the fixing column are limited by a fixing bolt.

[0015] Preferably, both the fixing bolt and the fixing plate and the fixing bolt and the fixing column are threadedly connected.

[0016] Preferably, an electric telescopic rod is fixedly installed in the middle of the upper end of the top plate, and a support column is fixedly connected to the output end of the electric telescopic rod.

[0017] Preferably, the upper end of the top plate is connected to a rope, and the rope passes through the top of the detection frame, and the rope is wound around the outside of the electric winch.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this high-strain detection device for foundation piles, through the provision of moving wheels, it is convenient to move the device without the need to rely on external lifting equipment. Combining with the positioning pins inserted into the ground, it is convenient to position the device during use, improving the stability of the device during the detection process. Through the provision of a counterweight mechanism, it is convenient to increase the weight of the detection hammer according to the actual detection situation. Moreover, by driving the side plate to expand and contract through the support column, it is convenient to support the detection hammer from the side, so that the detection hammer can fall for detection. Combining with the sliding between the connecting rod and the detection frame greatly improves the stability of the top plate and the detection hammer during the lifting process;

[0019] 1. It is provided with moving wheels and positioning pins. Through the provision of moving wheels, it is convenient to drive the device to move without the need to rely on external lifting equipment to drive the device to move. Combining with the positioning pins inserted into the ground, the stability of the device during use is improved;

[0020] 2. It is provided with a counterweight mechanism. The counterweight mechanism includes a counterweight plate, a fixing plate and fixing bolts. Through the provision of the counterweight mechanism, it is convenient to increase the weight of the detection hammer according to the actual detection situation;

[0021] 3. It is provided with a support column, a side plate and a connecting rod. By separating the support column from the side plate, the support for the detection hammer can be released, enabling it to fall and strike the foundation pile for detection. Combining with the sliding between the connecting rod and the detection frame, the stability of the top plate and the detection hammer during the lifting process is improved. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a front view schematic diagram of the present utility model;

[0024] Figure 3 It is a bottom view schematic diagram of the present utility model;

[0025] Figure 4 It is for the present utility model Figure 1 The enlarged schematic diagram of part A in the present utility model;

[0026] Figure 5 It is a schematic diagram of the exploded structure of the detection hammer, bottom plate, fixed column, counterweight plate, fixing plate and fixing bolts of the present utility model;

[0027] Figure 6 It is a schematic diagram of the overall structure of the detection hammer, bottom plate, counterweight plate, top plate, support column and side plate of the present utility model.

[0028] In the figure: 1, detection frame; 2, moving wheels; 3, positioning pins; 4, electric hoists; 5, ropes; 6, detection plumb bobs; 7, bottom plates; 8, fixed columns; 9, top plates; 10, counterweight mechanisms; 11, counterweight plates; 12, fixing plates; 13, fixing bolts; 14, electric telescopic rods; 15, support columns; 16, side plates; 17, connecting rods. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 - 6 , the present invention provides the following technical solutions.

[0031] Embodiment 1: To solve the problem in the prior art that when moving, it is necessary to rely on external lifting equipment for movement, especially during batch detection, the movement operation is relatively inconvenient. Therefore, in this embodiment, through the following technical solutions, a high-strain detection device for foundation piles is provided with a detection frame 1, moving wheels 2 and positioning pins 3. Moving wheels 2 are installed on both the left and right sides at the lower end of the detection frame 1, and positioning pins 3 are inserted at the edges of the lower end of the detection frame 1. At the same time, the lower end of the positioning pin 3 is inserted into the ground, as shown in Figure 1 , Figure 2 and Figure 3 . During use, the detection frame 1 can be pushed to make the moving wheels 2 roll on the ground, so as to facilitate driving the device to move at the detection site. Especially when batch detection is required, there is no need to rely on external lifting equipment to transfer the device, and the movement operation is relatively convenient. Move the detection frame 1 to the outside of the foundation pile to be detected. At the same time, a detection plumb bob 6 is arranged in the middle of the detection frame 1, and the detection plumb bob 6 is located above the foundation pile. Then, the positioning pins 3 are respectively inserted at the edges of the lower end of the detection frame 1, and the bottom of the positioning pin 3 is directly inserted into the ground, so as to facilitate positioning the device and improving the stability of the device during use and detection.

[0032] Embodiment 2: In the existing high-strain detection device for foundation piles, it is inconvenient to change the weight of the drop hammer according to actual detection requirements. Therefore, by providing a detection drop hammer 6, a bottom plate 7, fixed columns 8, a top plate 9 and a counterweight mechanism 10, the upper end of the detection drop hammer 6 is fixedly connected to the bottom plate 7, and fixed columns 8 are fixedly connected to the edges of the upper end of the bottom plate 7. The fixed columns 8 are arranged at equal angles on the upper end of the bottom plate 7, and the upper ends of the fixed columns 8 are fixedly connected to the top plate 9. The counterweight mechanism 10 includes a counterweight plate 11 for increasing weight, a fixing plate 12 for pressing and fixing, and a fixing bolt 13 with a limiting function. The counterweight plate 11 is placed on the upper end of the bottom plate 7, and the upper-layer counterweight plate 11 is in close contact with the fixing plate 12. The fixing plate 12 is connected to the fixed column 8 by a card slot, and the fixing plate 12 and the fixed column 8 are limited by the fixing bolt 13. The fixing bolt 13 is threadedly connected to both the fixing plate 12 and the fixed column 8. As Figure 4 , Figure 5 and Figure 6 shown, according to actual detection requirements, by adding different numbers of counterweight plates 11 to the upper end of the bottom plate 7, the weight of the detection drop hammer 6 during the detection process can be increased. Then, the fixing plate 12 is connected to the fixed column 8 by a card slot, and the fixing plate 12 presses and fixes the counterweight plate 11. Then, by rotating the fixing bolt 13, the fixing bolt 13 limits the fixing plate 12 and the fixed column 8, thereby improving the stability of the counterweight plate 11 on the bottom plate 7.

[0033] Embodiment 3: In the existing high-strain detection device for foundation piles, the stability of the drop hammer during lifting is poor. Therefore, by providing an electric telescopic rod 14, a support column 15, side plates 16 and a connecting rod 17, the electric telescopic rod 14 is fixedly installed in the middle of the upper end of the top plate 9, and the output end of the electric telescopic rod 14 is fixedly connected to the support column 15. The upper end of the top plate 9 is connected to the rope 5, and the rope 5 passes through the top of the detection frame 1. The rope 5 is wound around the outside of the electric winch 4. As Figure 1 , Figure 2 and Figure 6 shown, an electric winch 4 is installed on the top of the detection frame 1. The electric winch 4 is connected to the top plate 9 through the rope 5. When the electric winch 4 is started, the electric winch 4 drives the rope 5 to wind up, and then drives the detection drop hammer 6 to be lifted to the corresponding position above the foundation pile through the top plate 9. At the same time, during the lifting process, the connecting rod 17 is driven by the top plate 9 to slide between the detection frame 1, thereby greatly improving the stability during the lifting process. After the lifting is completed, the electric winch 4 is turned off, and then the electric telescopic rod 14 installed on the upper end of the top plate 9 is started. At this time, the electric telescopic rod 14 drives the support column 15 to contract, so that the support column 15 is separated from the side plate 16, releasing the support and limit on the top plate 9. At this time, the top plate 9 and the components below, such as the counterweight plate 11 and the detection drop hammer 6, fall directly under the action of gravity to hit the foundation pile, realizing the detection of the foundation pile.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pile foundation high strain detection device, comprising a detection frame (1), an electric winch (4) fixedly mounted on the upper end of the detection frame (1), and a detection weight (6) arranged in the middle of the detection frame (1); It is characterized in that Also includes: A counterweight mechanism (10), the counterweight mechanism (10) being arranged at the upper end of the bottom plate (7), and the counterweight mechanism (10) being used to increase the weight of the detection weight (6); A connecting rod (17) is fixedly connected to the left and right sides of the upper end of the top plate (9), and an up-and-down sliding structure is formed between the connecting rod (17) and the detection frame (1). The left and right sides of the upper end of the top plate (9) are fixedly connected to support columns (15), and the support columns (15) are plugged into the middle of the side plates (16).

2. A pile foundation high strain detection device according to claim 1, characterized in that: The left and right ends and the rear end of the lower end of the detection frame (1) are both equipped with moving wheels (2), and a positioning pin (3) for positioning is inserted at the edge of the detection frame (1), and the lower end of the positioning pin (3) is inserted into the ground.

3. A pile foundation high strain detection device according to claim 1, characterized in that: The upper end of the detection weight (6) is fixedly connected to a bottom plate (7), and a fixing column (8) is fixedly connected to the edge of the upper end of the bottom plate (7); the fixing column (8) is arranged at an equal angle on the upper end of the bottom plate (7), and the upper end of the fixing column (8) is fixedly connected to a top plate (9).

4. A pile foundation high strain detection device according to claim 1, characterized in that: The counterweight mechanism (10) comprises a counterweight plate (11) for increasing weight, a fixing plate (12) for pressing and fixing, and a fixing bolt (13) having a limiting function.

5. A pile high strain detection device according to claim 4, characterized in that: The counterweight plate (11) is placed on the upper end of the bottom plate (7), and the upper counterweight plate (11) and the fixed plate (12) are arranged in close contact with each other. The fixed plate (12) and the fixed column (8) are connected by a slot, and the fixed plate (12) and the fixed column (8) are limited by a fixing bolt (13).

6. A pile foundation high strain detection device according to claim 5, characterized in that: The fixing bolt (13) and the fixing plate (12) as well as the fixing bolt (13) and the fixing column (8) are all threadedly connected.

7. A pile foundation high strain detection device according to claim 3, characterized in that: An electric telescopic rod (14) is fixedly mounted in the middle of the upper end of the top plate (9), and a support column (15) is fixedly connected to the output end of the electric telescopic rod (14).

8. A pile foundation high strain detection device according to claim 7, characterized in that: The upper end of the top plate (9) is connected to a rope (5), and the rope (5) passes through the top of the detection frame (1), and the rope (5) is wound around the outside of the electric winch (4).

Images