Drop hammer height adjusting device for pile foundation high strain detection

Abstract

The utility model discloses a drop hammer height adjusting device for pile foundation high strain detection, which comprises a pile foundation and a fixing frame, an electric wire spool is fixedly mounted at the top of the fixing frame, a steel wire rope is wound on the electric wire spool, slide rails are symmetrically and fixedly mounted in the fixing frame, a lifting seat is arranged between the two slide rails, and a lifting rope is connected to the top of the lifting seat. First sliding blocks are symmetrically and fixedly connected to the two sides of the lifting seat, a positioning groove is formed in the bottom face of the lifting seat, containing cavities are symmetrically formed in the two sides of the positioning groove, limiting grooves are connected between the containing cavities and the positioning groove, air cylinders are fixedly installed in the containing cavities, and positioning plates are installed on piston rods of the air cylinders. A distance sensor is installed on the bottom face of the lifting base, and protection assemblies are symmetrically arranged on the two sides of the top end of the pile foundation. The device is reasonable in design, can limit the falling heavy hammer, prevents the falling heavy hammer from falling off from a pile foundation, guarantees the safety of detection field personnel and environment, and improves the safety of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a drop hammer height adjustment device for pile foundation high strain detection. Background Art

[0002] The existing drop hammer height adjustment device for high-strain detection of pile foundations uses a heavy hammer to impact the pile top to produce sufficient relative displacement between the pile and the soil. In order to produce a certain relative displacement between the pile and the soil, a large amount of energy needs to be applied to the pile, and a heavy hammer must be used with a certain drop distance to hit the pile top to achieve this. In the traditional drop hammer height adjustment device for high-strain detection of pile foundations, during the high-strain detection process, the drop hammer is mostly hung on a hook manually, and when releasing the drop hammer, a long rod or other tool must be manually held to hit the hanger, which poses a safety hazard. Therefore, a detection device that can automatically release the drop hammer has been developed on the market. However, there is a risk of the drop hammer rolling down from the top of the pile foundation after impacting the pile foundation from a high place, which still poses a great safety hazard to the detection personnel and the environment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a drop hammer height adjustment device for pile foundation high strain detection.

[0004] The yoke is provided with a plurality of camshafts, each of which has ...

[0005] Furthermore, one end of the steel wire rope is connected to the winding shaft of the electric winding drum, and the other end passes through the top surface of the fixing frame and is connected to the suspension rope.

[0006] Furthermore, the slide rail is a T-shaped rail, and the slider is slidably connected to the slide rail.

[0007] Furthermore, the positioning plate is located in the limiting groove, and an arc groove is formed at one end of the positioning plate close to the connecting rod.

[0008] Furthermore, the protection component includes a second slider, a fixing tube is fixedly connected to the second slider, an adjusting rod is inserted at one end of the fixing tube, and a protection plate is fixedly connected to one end of the adjusting rod.

[0009] Furthermore, the slider 2 is slidably connected to the slide rail and is fixed to the slide rail by bolts. The front end of the fixed cylinder is threadedly connected with a tightening knob. The cross-section of the adjusting rod is rectangular and is fixed inside the fixed cylinder by a tightening knob. The protective plate is an arc-shaped plate.

[0010] The advantages of the utility model compared with the existing technology are: the utility model adjusts the height of the lifting seat and the weight by winding and unwinding the electric winding reel, and can monitor the distance between the weight and the ground in real time through the distance sensor, so as to facilitate the adjustment of the weight to the specified height, slide the slider 2 along the slide rail, fix the slider 2 on the slide rail by bolts, adjust the depth of the adjustment rod inserted into the fixed cylinder, and fix it by tightening the knob, so as to adjust the distance between the protective plate and the pile foundation, and the protective plate can effectively limit the weight to prevent it from falling off the pile foundation, thereby ensuring the safety of the detection site. The utility model has a reasonable design and can limit the falling weight to prevent it from falling off the pile foundation, thereby ensuring the safety of the personnel and environment at the detection site and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model.

[0012] Figure 2 It is a cross-sectional view of the utility model.

[0013] Figure 3 This utility model Figure 2 A magnified view of the local structure.

[0014] As shown in the figure: 1. Fixed frame; 2. Electric winding drum; 3. Fixed plate; 4. Wire rope; 5. Slide rail; 6. Lifting seat; 6.1. Positioning groove; 6.2. Receptacle; 6.3. Limiting groove; 7. Lifting rope; 8. Slider 1; 9. Cylinder; 10. Positioning plate; 11. Weight; 12. Connecting rod; 13. Limiting plate; 14. Distance sensor; 15. Slider 2; 16. Fixed cylinder; 17. Adjusting rod; 18. Protective plate. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0016] like Figures 1 to 3 As shown, a drop hammer height adjustment device for pile foundation high strain detection includes a pile foundation and a fixed frame 1, an electric winding drum 2 is fixedly installed on the top of the fixed frame 1, and fixed plates 3 are symmetrically fixedly connected to the bottom of both sides, a steel wire rope 4 is wound on the electric winding drum 2, and slide rails 5 are symmetrically fixedly installed on both sides of the fixed frame 1, a lifting seat 6 is provided between the two slide rails 5, a lifting rope 7 is connected to the top of the lifting seat 6, and sliders 8 are symmetrically fixedly connected on both sides, and a positioning groove 6.1 is provided on the bottom surface, one end of the steel wire rope 4 is connected to the winding shaft of the electric winding drum 2, and the other end passes through the top surface of the fixed frame 1 and is connected to the lifting rope 7, the slide rail 5 is a T-shaped rail, and the slider 8 is It is slidably connected to the slide rail 5, and cavities 6.2 are symmetrically provided on both sides of the positioning groove 6.1. A limiting groove 6.3 is connected between the cavities 6.2 and the positioning groove 6.1. A cylinder 9 is fixedly installed inside the cavities 6.2. A positioning plate 10 is installed on the piston rod of the cylinder 9. The positioning plate 10 is located in the limiting groove 6.3, and an arc groove is opened at one end of the positioning plate 10 close to the connecting rod 12. A heavy hammer 11 is provided under the lifting seat 6, and a connecting rod 12 is fixedly connected to the top of the heavy hammer 11. The top of the connecting rod 12 is fixedly connected to the limiting plate 13. A distance sensor 14 is installed on one side of the heavy hammer 11 on the bottom surface of the lifting seat 6, and protective components are symmetrically provided on both sides of the top of the pile foundation.

[0017] The protective assembly includes a slider 15, a fixed tube 16 is fixedly connected to the slider 15, an adjusting rod 17 is inserted at one end of the fixed tube 16, a protective plate 18 is fixed at one end of the adjusting rod 17, the slider 15 is slidably connected to the slide rail 5, and it is fixed to the slide rail 5 by bolts, a fastening knob is threadedly connected to the front end of the fixed tube 16, the cross-section of the adjusting rod 17 is rectangular, and it is fixed inside the fixed tube 16 by a fastening knob, and the protective plate 18 is an arc-shaped plate.

[0018] In specific use, when using the device to detect high strain of pile foundation, the fixing frame 1 is set above the pile foundation, the electric winding drum 2 is unwound to lower the position of the lifting seat 6, the limit plate 13 is inserted into the positioning groove 6.1, the cylinder 9 is extended to make the two positioning plates 10 approach each other, so as to achieve the limit fixation of the limit plate 13, and the electric winding drum 2 is reeled up to raise the position of the lifting seat 6 and the weight 11. The distance sensor can monitor the distance between the weight 11 and the ground in real time, so as to facilitate the adjustment of the weight 11 to a specified height, and the weight 11 slides along the slide rail 5 according to the height of the pile foundation. Block 2 15, and make the bottom edge of the protective plate 18 parallel to the top surface of the pile foundation, then fix the slider 2 15 on the slide rail 5 by bolts, adjust the depth of the adjusting rod 17 inserted into the fixing tube 16, and fix it by tightening the knob, so as to adjust the distance between the protective plate 18 and the pile foundation, and the cylinder 9 contracts to make the two positioning plates 10 move away from each other, so that the heavy hammer 11 can perform free fall motion, and realize high strain detection of the pile foundation. The protective plate 18 can effectively limit the heavy hammer 11 to prevent it from falling off the pile foundation, thereby ensuring the safety of the personnel and environment at the detection site.

[0019] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0021] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A drop weight height adjustment device for pile foundation high strain detection, comprising a pile foundation and a fixing frame (1), characterized in that: An electric wire winding drum (2) is fixedly mounted on the top of the fixed frame (1), and fixed plates (3) are symmetrically fixedly mounted on the bottom of both sides. A steel wire rope (4) is wound around the electric wire winding drum (2). Slide rails (5) are symmetrically fixedly mounted on both sides of the fixed frame (1), and a lifting seat (6) is provided between the two slide rails (5). A lifting rope (7) is connected to the top of the lifting seat (6), and sliding blocks (8) are symmetrically fixedly mounted on both sides. A positioning groove (6.1) is provided on the bottom surface, and cavities (6.2) are symmetrically arranged on both sides of the positioning groove (6.1). The cavities A limiting groove (6.3) is connected between the cylinder (6.2) and the positioning groove (6.1); a cylinder (9) is fixedly installed inside the cavity (6.2); a positioning plate (10) is installed on the piston rod of the cylinder (9); a weight (11) is provided below the lifting seat (6); a connecting rod (12) is fixedly connected to the top of the weight (11); a limiting plate (13) is fixedly connected to the top of the connecting rod (12); a distance sensor (14) is installed on one side of the weight (11) on the bottom surface of the lifting seat (6); and protective components are symmetrically provided on both sides of the top of the pile foundation.

2. The drop weight height adjustment device for pile foundation high strain detection according to claim 1, characterized in that: One end of the steel wire rope (4) is connected to the winding shaft of the electric winding drum (2), and the other end passes through the top surface of the fixing frame (1) and is connected to the suspension rope (7).

3. The drop weight height adjustment device for pile foundation high strain detection according to claim 1, characterized in that: The slide rail (5) is a T-shaped rail, and the slider 1 (8) is slidably connected to the slide rail (5).

4. The drop weight height adjustment device for pile foundation high strain detection according to claim 1, characterized in that: The positioning plate (10) is located in the limiting groove (6.3), and an arc groove is formed at one end of the positioning plate close to the connecting rod (12).

5. The drop weight height adjustment device for pile foundation high strain detection according to claim 1, characterized in that: The protection component comprises a second slider (15), a fixing cylinder (16) is fixedly connected to the second slider (15), an adjusting rod (17) is inserted at one end of the fixing cylinder (16), and a protection plate (18) is fixedly connected at one end of the adjusting rod (17).

6. The drop weight height adjustment device for pile foundation high strain detection according to claim 5, characterized in that: The second slide block (15) is slidably connected to the slide rail (5) and is fixed to the slide rail (5) by bolts. A fastening knob is threadedly connected to the front end of the fixing cylinder (16). The cross section of the adjusting rod (17) is rectangular and is fixed inside the fixing cylinder (16) by the fastening knob. The protective plate (18) is an arc-shaped plate.

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