Excitation hammer auxiliary support based on foundation pile low strain detection

Abstract

The utility model provides an excitation hammer auxiliary support based on foundation pile low strain detection, which comprises a working panel, a main pipe body, a first supporting rod, a second supporting rod, a vertical rod, a supporting foot plate, a driving shaft, a driving mechanism and an excitation hammer body, the working panel is a circular panel, the main pipe body and the working panel are coaxially arranged, and the main pipe body is fixed at the bottom of the working panel; a driving hole corresponding to the main pipe body is formed in the working panel, the multiple first supporting rods are arranged at equal-angle intervals in the circumferential direction of the outer wall of the main pipe body and incline downwards, one end of each second supporting rod is connected with the inner wall of the corresponding first supporting rod, and the other end of each second supporting rod is connected with the outer wall of the main pipe body; the first supporting rod, the second supporting rod and the main pipe body form a stable triangular structure, the tripod formed by the first supporting rod, the second supporting rod and the main pipe body can provide enough supporting force, and it is ensured that the excitation hammer body is kept stable in the hammering process.

Description

Technical Field

[0001] The utility model relates to the field of low-strain detection of foundation piles, in particular to an auxiliary bracket of an exciting hammer for low-strain detection of foundation piles. Background Art

[0002] Currently, relevant testing specifications do not clearly define requirements for the vibrating hammers used in low-strain testing of pile foundations. Most vibrating hammers on the market are sold as accessories to testing equipment manufacturers. These hammers are handheld, leaving on-site testers to determine the force and verticality of the hammer strikes. This makes it impossible to ensure the consistency of hammer force, verticality, and position, resulting in poor signal consistency and accuracy during the test. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In order to solve the above problems in the prior art, the utility model provides an auxiliary bracket for a vibration hammer for low-strain detection of foundation piles.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] An auxiliary support for a vibration hammer for low-strain detection of pile foundations, comprising a working panel, a main pipe body, a first support rod, a second support rod, a vertical rod, a support foot plate, a drive shaft, a drive mechanism and a vibration hammer body;

[0008] The working panel is a circular panel, the main body is coaxially arranged with the working panel and fixed to the bottom of the working panel, and a driving hole corresponding to the main body is opened on the working panel;

[0009] There are multiple first support rods, which are arranged at equal angles along the circumference of the outer wall of the main tube, and the first support rods are arranged to tilt downward;

[0010] One end of the second support rod is connected to the inner wall of the first support rod, and the other end of the second support rod is connected to the outer wall of the main body. The first support rod, the second support rod and the main body form a stable triangular structure;

[0011] The vertical rod is vertically arranged at one end of the first support rod away from the main body;

[0012] The supporting foot plate is installed at the bottom of the vertical pole;

[0013] The drive shaft is installed in the main pipe;

[0014] The driving mechanism is arranged on the surface of the working panel and is connected to the driving shaft, and is used to drive the driving shaft to move up and down reciprocatingly in the tube body;

[0015] The exciting hammer body is installed at the bottom of the driving shaft.

[0016] Preferably, the driving mechanism includes a fixed plate, a turntable, a driving rod and a motor;

[0017] The fixing plate is vertically arranged on the surface of the working panel;

[0018] The turntable is rotatably mounted on the fixed plate;

[0019] The motor is connected to the center of the turntable via a rotating shaft;

[0020] One end of the driving rod is rotatably connected to the eccentric portion of the turntable surface, and the other end of the driving rod is rotatably connected to one end of the top of the driving shaft.

[0021] Preferably, the vertical pole includes an outer pole body and an inner pole body;

[0022] One end of the top of the outer rod is fixedly connected to the end of the first support rod away from the main body, and one end of the bottom of the outer rod is provided with a telescopic slot;

[0023] The inner rod body is installed in the telescopic slot;

[0024] A screw is installed on the outer wall of the opening of the telescopic slot, and the inner rod body in the telescopic slot is fixed by the screw.

[0025] Preferably, a level is installed on the working panel.

[0026] Preferably, ground nail holes are provided on the supporting footplate, and the supporting footplate is fixedly connected to the ground through the ground nails.

[0027] Preferably, a bolt rod is provided at the bottom of the driving shaft, a threaded hole corresponding to the bolt rod is provided at the top of the exciting hammer body, and the driving shaft is threadedly connected to the exciting hammer body through the bolt rod.

[0028] Preferably, a counterweight is installed on the working panel.

[0029] Preferably, it further comprises a rubber pad, which is arranged directly below the main body and fixedly connected to the bottom of the supporting foot plate.

[0030] (3) Beneficial effects

[0031] The beneficial effects of the present invention are:

[0032] 1. The tripod composed of the first support rod, the second support rod and the main body can provide sufficient support force to ensure that the vibrating hammer body remains stable during the hammering process;

[0033] 2. The driving mechanism is connected to the exciting hammer body to realize the automatic hammering of the exciting hammer body;

[0034] 3. The retractable vertical pole can keep the working panel level even on uneven ground;

[0035] 4. The detachable vibration hammer body can be replaced according to actual conditions and is flexible to use;

[0036] 5. The setting of rubber pad can widen the excitation pulse and reduce the attenuation of elastic wave in the pile body. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the structure of an auxiliary bracket for a vibration hammer used for low-strain detection of pile foundations;

[0038] Figure 2 Schematic diagram of the structure of the driving mechanism;

[0039] Figure 3 Schematic diagram of the internal structure of the pole.

[0040] Description of reference numerals:

[0041] 1. Working panel;

[0042] 2. Main body;

[0043] 3. The first support rod;

[0044] 4. Second support rod;

[0045] 5. Vibrating hammer body;

[0046] 6. Driving mechanism;

[0047] 61. Fixed plate; 62. Turntable; 63. Driving rod;

[0048] 7. Pole erection;

[0049] 8. Support footboard;

[0050] 9. Rubber cushion;

[0051] 10. Counterweight. DETAILED DESCRIPTION

[0052] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0053] Please refer to Figures 1 to 3 The utility model provides an auxiliary bracket for a vibration hammer for low-strain detection of pile foundations, comprising a working panel 1, a main body 2, a first support rod 3, a second support rod 4, a vertical rod 7, a support foot plate 8, a drive shaft, a drive mechanism 6 and a vibration hammer body 5;

[0054] The working panel 1 is a circular panel. The main body 2 is coaxially arranged with the working panel 1 and fixed to the bottom of the working panel 1. A driving hole corresponding to the main body 2 is opened on the working panel 1.

[0055] A plurality of first support rods 3 are provided, and the plurality of first support rods 3 are arranged at equal angles along the circumference of the outer wall of the main body 2, and the first support rods 3 are arranged to be tilted downward;

[0056] One end of the second support rod 4 is connected to the inner wall of the first support rod 3, and the other end of the second support rod 4 is connected to the outer wall of the main body 2. The first support rod 3, the second support rod 4 and the main body 2 form a stable triangular structure;

[0057] The vertical rod 7 is vertically arranged at the end of the first support rod 3 away from the main body 2;

[0058] The supporting foot plate 8 is installed at the bottom of the vertical pole 7;

[0059] The drive shaft is installed in the main body 2;

[0060] The driving mechanism 6 is arranged on the surface of the working panel 1 and is connected to the driving shaft, and is used to drive the driving shaft to move up and down reciprocatingly in the tube body;

[0061] The vibrating hammer body 5 is installed at the bottom of the driving shaft;

[0062] When in use, the tripod composed of the first support rod 3, the second support rod 4 and the main body 2 can provide sufficient supporting force to ensure that the exciting hammer body 5 remains stable during the hammering process. The driving mechanism 6 is connected to the exciting hammer body 5 to realize the automatic hammering of the exciting hammer body 5.

[0063] In this embodiment, the driving mechanism 6 includes a fixing plate 61, a rotating disk 62, a driving rod 63 and a motor;

[0064] The fixing plate 61 is vertically arranged on the surface of the working panel 1;

[0065] The turntable 62 is rotatably mounted on the fixed plate 61;

[0066] The motor is connected to the center of the turntable 62 via a rotating shaft;

[0067] One end of the driving rod 63 is rotatably connected to the eccentric portion of the surface of the turntable 62, and the other end of the driving rod 63 is rotatably connected to the top end of the driving shaft;

[0068] During use, the motor drives the turntable 62 to rotate, and drives the driving shaft in the main body 2 to move up and down continuously through the driving rod 63, thereby cooperating with the exciting hammer body 5 to realize hammering.

[0069] In this embodiment, the upright pole 7 includes an outer pole body and an inner pole body;

[0070] One end of the top of the outer rod is fixedly connected to the end of the first support rod 3 away from the main body 2, and a telescopic slot is opened at one end of the bottom of the outer rod;

[0071] The inner rod body is installed in the telescopic slot;

[0072] A screw is installed on the outer wall of the opening of the telescopic slot, and the inner rod body in the telescopic slot is fixed by the screw;

[0073] During use, the fixing of the inner rod by the screw is released, and the inner rod is telescopically moved to adjust the overall length of the upright 7, so that the working panel 1 can be kept in a horizontal state even on uneven ground.

[0074] In this embodiment, a level ruler is installed on the working panel 1 , and the levelness of the working panel 1 can be understood by the level ruler.

[0075] In this embodiment, ground nail holes are opened on the supporting foot plate 8, and the supporting foot plate 8 is fixedly connected to the ground through the ground nails.

[0076] In this embodiment, a bolt rod is provided at the bottom of the driving shaft, and a threaded hole corresponding to the bolt rod is provided at the top of the exciting hammer body 5. The driving shaft is threadedly connected to the exciting hammer body 5 through the bolt rod to realize the detachable connection of the exciting hammer body 5. For small piles, short piles or shallow defective piles, a lighter exciting hammer is selected to improve the excitation frequency and detection resolution, while for large piles and long piles, a heavier nylon hammer or nylon rod is selected to increase the impact energy. The detachable exciting hammer body 5 can be replaced according to actual conditions.

[0077] In this embodiment, a counterweight 10 is installed on the working panel 1 . The arrangement of the counterweight 10 can prevent the center of gravity of the working panel 1 from being offset due to the arrangement of the driving mechanism 6 .

[0078] This embodiment also includes a rubber pad 9, which is arranged directly below the main pipe body 2 and fixedly connected to the bottom of the supporting foot plate 8. The setting of the rubber pad 9 can widen the excitation pulse and reduce the attenuation of the elastic wave in the pile body.

[0079] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0080] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A vibration hammer auxiliary bracket for low strain detection of pile foundation, characterized in that: It includes a working panel, a main body, a first support rod, a second support rod, a vertical rod, a support foot plate, a driving shaft, a driving mechanism and an exciting hammer body; The working panel is a circular panel, the main body is coaxially arranged with the working panel and fixed to the bottom of the working panel, and a driving hole corresponding to the main body is opened on the working panel; There are multiple first support rods, which are arranged at equal angles along the circumference of the outer wall of the main tube, and the first support rods are arranged to tilt downward; One end of the second support rod is connected to the inner wall of the first support rod, and the other end of the second support rod is connected to the outer wall of the main body. The first support rod, the second support rod and the main body form a stable triangular structure; The vertical rod is vertically arranged at one end of the first support rod away from the main body; The supporting foot plate is installed at the bottom of the vertical pole; The drive shaft is installed in the main pipe; The driving mechanism is arranged on the surface of the working panel and is connected to the driving shaft, and is used to drive the driving shaft to move up and down reciprocatingly in the tube body; The exciting hammer body is installed at the bottom of the driving shaft.

2. The auxiliary bracket for low-strain detection of pile foundation using a vibration hammer according to claim 1, characterized in that: The driving mechanism includes a fixed plate, a rotating disk, a driving rod and a motor; The fixing plate is vertically arranged on the surface of the working panel; The turntable is rotatably mounted on the fixed plate; The motor is connected to the center of the turntable via a rotating shaft; One end of the driving rod is rotatably connected to the eccentric portion of the turntable surface, and the other end of the driving rod is rotatably connected to one end of the top of the driving shaft.

3. The auxiliary bracket for low-strain detection of pile foundation using a vibration hammer according to claim 1, characterized in that: The vertical pole includes an outer pole body and an inner pole body; One end of the top of the outer rod is fixedly connected to the end of the first support rod away from the main body, and one end of the bottom of the outer rod is provided with a telescopic slot; The inner rod body is installed in the telescopic slot; A screw is installed on the outer wall of the opening of the telescopic slot, and the inner rod body in the telescopic slot is fixed by the screw.

4. The auxiliary bracket for low-strain detection of pile foundation using a vibration hammer according to claim 3, characterized in that: A level ruler is installed on the working panel.

5. The auxiliary bracket for low-strain detection of pile foundation using a vibration hammer according to claim 1, characterized in that: The support foot plate is provided with a ground nail hole, and the support foot plate is fixedly connected to the ground through the ground nail.

6. The auxiliary bracket for low-strain detection of pile foundation using a vibration hammer according to claim 1, characterized in that: A bolt rod is provided at the bottom of the driving shaft, a threaded hole corresponding to the bolt rod is provided at the top of the exciting hammer body, and the driving shaft is threadedly connected to the exciting hammer body through the bolt rod.

7. The auxiliary bracket for low-strain detection of pile foundation using a vibration hammer according to claim 1, characterized in that: A counterweight is installed on the working panel.

8. The auxiliary support for low-strain detection of pile foundation using a vibration hammer according to claim 1, characterized in that: It also includes a rubber pad, which is arranged just below the main body and fixedly connected to the bottom of the supporting foot plate.

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