Automatic hammering device for low-strain detection of pile foundation

Abstract

The utility model provides an automatic hammering device for low-strain detection of a pile foundation. The automatic hammering device for low strain detection of the pile foundation comprises a supporting plate, a driving device and a driving device, wherein a limiting opening is formed in the supporting plate; the connecting rod is movably placed in the limiting opening; the knocking hammer is fixed at the bottom of the connecting rod; the air cushion is fixedly mounted at the bottom of the knocking hammer; the stabilizing assembly is arranged on the supporting plate, and the stabilizing assembly is used for stabilizing the angle of the connecting rod; and the multiple adjusting assemblies are all arranged on the supporting plate. The automatic hammering device for low-strain detection of the pile foundation has the advantages that the hammering position can be conveniently positioned, and meanwhile vertical hammering can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation engineering, in particular to an automatic hammering device for low-strain detection of pile foundations. Background Art

[0002] In the field of foundation engineering inspection, there are many methods for pile body integrity inspection, including low strain method, high strain method, core drilling method and acoustic wave transmission method. Among them, the low strain method is the most commonly used method at home and abroad. It is a method based on one-dimensional linear elastic theory and adopts transient hammering method to determine the integrity of the pile body by measuring the acceleration of the pile top or the velocity response time domain curve.

[0003] Existing pile foundation hammering methods are mostly manual hammering, and it is difficult to guarantee the strength of each hammering, resulting in deviations in the final comparison data. The general hammering position is the center of the pile foundation, which is difficult to accurately locate manually.

[0004] Therefore, it is necessary to provide a new pile foundation low strain detection automatic hammering device to solve the above technical problems. Utility Model Content

[0005] In order to solve the technical problem that it is inconvenient to control the hammering force and locate the hammering point when hammering pile foundation manually, the utility model provides a low-strain detection automatic hammering device for pile foundation.

[0006] The utility model provides an automatic hammering device for low-strain detection of pile foundations, comprising: a support plate, a limit opening being provided on the support plate; a connecting rod, the connecting rod being movably placed in the limit opening; a knocking hammer, the knocking hammer being fixed to the bottom of the connecting rod; an air cushion, the air cushion being fixedly installed on the bottom of the knocking hammer; a stabilizing component, the stabilizing component being arranged on the support plate, the stabilizing component being used to stabilize the angle of the connecting rod; and a plurality of adjusting components, the plurality of adjusting components being all arranged on the support plate, the adjusting components being used to locate the knocking position.

[0007] Preferably, the stabilizing assembly includes a metal block, a support frame and an electromagnet, the metal block is fixedly mounted on the top of the connecting rod, the support frame is detachably mounted on the top of the support plate, the electromagnet is fixedly mounted on the bottom of the support frame, and the electromagnet can adsorb the metal block.

[0008] Preferably, the adjustment assembly includes an adjusting screw, a limit block, an adjusting ring, a retaining ring and a limit rod, the adjusting screw is threadedly mounted on the support plate, the limit block is fixedly mounted on the adjusting screw, the adjusting ring is rotatably mounted on the limit block, the retaining ring is fixed to the top of the support plate, the limit rod is movably mounted in the retaining ring and fixedly connected to the adjusting ring, and scale lines are provided on the limit rod.

[0009] Preferably, support legs are fixedly mounted on the bottom of the plurality of adjustment rings, bottom plates are fixedly mounted on the bottom of the plurality of support legs, and anti-slip pads are fixedly mounted on the bottom of the bottom plates.

[0010] Preferably, a hand wheel is fixedly mounted on each of the plurality of limit blocks, and a clamping rod is fixedly mounted on each of the plurality of limit rods.

[0011] Preferably, a protective shell is fixedly sleeved outside the winding area of ​​the electromagnet, and a connecting socket is fixedly installed on the top of the supporting frame, and a power plug can be installed in the connecting socket.

[0012] Preferably, the surface of the connecting rod is provided with anti-slip grooves, and a plurality of support rods are rotatably installed at the bottom of the support frame, and the plurality of support rods are all threadedly connected to the top of the support plate, and the plurality of support rods are respectively located between the plurality of limit rods.

[0013] Compared with the related art, the pile foundation low strain detection automatic hammering device provided by the utility model has the following beneficial effects:

[0014] The utility model provides a pile foundation low strain detection automatic hammering device:

[0015] 1. The connecting rod is limited by the limit port to prevent the hammer from falling off the support plate and being lost. The air cushion can make the hammer bounce up after hitting the base. The electromagnet can be energized to absorb the metal block, thereby stabilizing the hammer. The support frame can support the electromagnet to provide enough placement space for the staff's hands. The extension length of the adjusting screw can be adjusted by turning the adjusting screw. The extension length data of the adjusting screw can be connected with the limit rod. The stability of the limit rod when moving can be increased by adjusting the ring and the limit block;

[0016] 2. The stability of the device can be ensured by supporting the device with the support legs in conjunction with the base plate. The friction between the device and the ground can be increased by the anti-slip pad. The limit block can be turned more easily by the hand wheel. The clamping rod can prevent the limit rod from easily detaching from the clamping ring, thereby preventing the adjusting screw from falling off. The protective shell can protect the wires wrapped around the electromagnet. The electromagnet can be energized by cooperating with the power plug and the connecting socket connected to the power supply, so that the electromagnet has magnetic properties. The anti-slip grooves can increase the stability when twisting the support rod. The support frame can be removed by removing the support rod, which is convenient for separate protection of the electromagnet during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main cross-sectional structure of a preferred embodiment of the pile foundation low-strain detection automatic hammering device provided by the utility model;

[0018] Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG.

[0019] Figure 3 It is a schematic diagram of the top view structure of the support plate in the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the adjusting screw, the limiting block, the adjusting ring and the limiting rod in the utility model.

[0021] Numbers in the figure: 1. Support plate; 2. Limiting opening; 3. Connecting rod; 4. Percussion hammer; 5. Air cushion; 6. Metal block; 7. Support frame; 8. Electromagnet; 9. Protective shell; 10. Adjusting screw; 11. Limiting block; 12. Adjusting ring; 13. Retaining ring; 14. Limiting rod; 15. Handwheel; 16. Support leg; 17. Bottom plate; 18. Anti-slip pad. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1-Figure 4 ,in, Figure 1 A schematic diagram of the main cross-sectional structure of a preferred embodiment of the pile foundation low-strain detection automatic hammering device provided by the utility model; Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG. Figure 3 It is a schematic diagram of the top view structure of the support plate in the utility model; Figure 4 It is a three-dimensional structural schematic diagram of the adjusting screw, the limiting block, the adjusting ring and the limiting rod in the utility model.

[0024] The automatic hammering device for low-strain detection of pile foundations includes: a support plate 1, which is provided with a limit opening 2; a connecting rod 3, which is movably placed in the limit opening 2; a percussion hammer 4, which is fixed to the bottom of the connecting rod 3; an air cushion 5, which is fixedly installed at the bottom of the percussion hammer 4; a stabilizing component, which is arranged on the support plate 1, and is used to stabilize the angle of the connecting rod 3; multiple adjustment components, multiple adjustment components are all arranged on the support plate 1, and the adjustment components are used to locate the percussion position, and the connecting rod 3 is limited by the limit opening 2 to prevent the percussion hammer 4 from falling off the support plate 1 and being lost, and the percussion hammer 4 can be made to bounce up after hammering the base through the air cushion 5.

[0025] The stabilizing assembly includes a metal block 6, a support frame 7 and an electromagnet 8. The metal block 6 is fixedly mounted on the top of the connecting rod 3. The support frame 7 is detachably mounted on the top of the support plate 1. The electromagnet 8 is fixedly mounted on the bottom of the support frame 7. The electromagnet 8 can absorb the metal block 6. By energizing the electromagnet 8, the metal block 6 can be absorbed, thereby stabilizing the striking hammer 4. The electromagnet 8 can be supported by the support frame 7 to provide sufficient placement space for the staff's hands.

[0026] The adjustment assembly includes an adjusting screw 10, a limit block 11, an adjusting ring 12, a snap ring 13 and a limit rod 14. The adjusting screw 10 is threadedly mounted on the support plate 1, the limit block 11 is fixedly mounted on the adjusting screw 10, the adjusting ring 12 is rotatably sleeved on the limit block 11, the snap ring 13 is fixed to the top of the support plate 1, the limit rod 14 is movably mounted in the snap ring 13 and fixedly connected to the adjusting ring 12, and a scale line is provided on the limit rod 14. The extension length of the adjusting screw 10 can be adjusted by rotating the adjusting screw 10, and the extension length data of the adjusting screw 10 can be connected by cooperating with the limit rod 14. The stability of the limit rod 14 when moving can be increased by cooperating with the limit block 11 through the adjusting ring 12.

[0027] The bottom of the plurality of adjustment rings 12 is fixedly mounted with a support leg 16, the bottom of the plurality of support legs 16 is fixedly mounted with a bottom plate 17, the bottom of the bottom plate 17 is fixedly mounted with an anti-skid pad 18, and the stability of the device can be ensured by supporting the device with the support legs 16 in cooperation with the bottom plate 17, and the friction between the device and the ground can be increased by the anti-skid pad 18.

[0028] A handwheel 15 is fixedly installed on each of the limit blocks 11, and a clamping rod is fixedly installed on each of the limit rods 14. The handwheel 15 can more easily rotate the limit block 11, and the clamping rod can prevent the limit rod 14 from easily detaching from the clamping ring 13, thereby preventing the adjusting screw 10 from falling off.

[0029] A protective shell 9 is fixedly sleeved outside the winding area of ​​the electromagnet 8, and a connecting socket is fixedly installed on the top of the support frame 7. A power plug can be installed in the connecting socket. The protective shell 9 can protect the wires wound on the electromagnet 8, and the electromagnet 8 can be energized by cooperating with the power plug connected to the power source and the connecting socket, so that the electromagnet 8 has magnetism.

[0030] The surface of the connecting rod 3 is provided with anti-slip grooves, and a plurality of support rods are rotatably installed at the bottom of the support frame 7. The plurality of support rods are all threadedly connected to the top of the support plate 1, and the plurality of support rods are respectively located between the plurality of limit rods 14. The anti-slip grooves can increase the stability when the support rods are twisted, and the support frame 7 can be removed by removing the support rods, so that the electromagnet 8 can be separately protected during transportation.

[0031] It is worth noting that the circuits, electronic components and modules involved in the present utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present utility model does not involve improvements to software and methods.

[0032] The working principle of the pile foundation low strain detection automatic hammering device provided by the utility model is as follows:

[0033] This solution also has an electric control cabinet, which is installed on the equipment. When in use, each electrical device can be started and operated through the electric control cabinet. The power connection method of each electrical device is an existing mature technology, which is a well-known technology for people in this field and will not be described in detail here.

[0034] When in use, first place the device on the pile foundation, turn the hand wheel 15 to adjust the extension length of the adjusting screw 10, understand the position of the adjusting screw 10 through the limit rod 14, position the knocking hammer 4 so that the knocking hammer 4 is directly above the pile foundation, and then install the support rod on the support plate 1, and energize the electromagnet 8 to make the electromagnet 8 absorb the metal block 6. At this time, the knocking hammer 4 is in a suspended state, and the staff holds the connecting rod 3 in the hand and cuts off the power supply connected to the electromagnet 8. At this time, the knocking hammer 4 descends to hammer the pile foundation, and at the same time, the knocking hammer 4 rises under the rebound of the air cushion 5. At this time, the staff can hold the connecting rod 3 again, and the device maintains the original state and is transferred to another pile foundation for knocking. Since the knocking positions are relatively consistent, the data comparison value obtained is higher.

[0035] Compared with the related art, the pile foundation low strain detection automatic hammering device provided by the utility model has the following beneficial effects:

[0036] The utility model provides an automatic hammering device for low-strain detection of pile foundations, which limits the connecting rod 3 through the limiting opening 2, and can prevent the knocking hammer 4 from falling off and being lost from the supporting plate 1, and can make the knocking hammer 4 bounce up after hammering the base through the air cushion 5, and can adsorb the metal block 6 by energizing the electromagnet 8, so as to stabilize the knocking hammer 4, and can support the electromagnet 8 through the supporting frame 7, so as to provide enough placement space for the hands of the staff, and can adjust the extension length of the adjusting screw 10 by rotating the adjusting screw 10, and can connect the extension length data of the adjusting screw 10 by cooperating with the limiting rod 14, and can increase the stability of the limiting rod 14 when moving by cooperating with the limiting block 11 through the adjusting ring 12, and can also be used to adjust the stability of the limiting rod 14 when moving. The support legs 16 cooperate with the base plate 17 to support the device to ensure the stability of the device. The anti-slip pad 18 can increase the friction between the device and the ground. The hand wheel 15 can more easily turn the limit block 11. The clamping rod can prevent the limit rod 14 from easily detaching from the clamping ring 13, thereby preventing the adjusting screw 10 from falling off. The protective shell 9 can protect the wires wrapped around the electromagnet 8. The electromagnet 8 can be energized by cooperating with the power plug and the connecting socket connected to the power supply, so that the electromagnet 8 has magnetic properties. The anti-slip grooves can increase the stability when twisting the support rod. The support frame 7 can be removed by removing the support rod, which is convenient for separate protection of the electromagnet 8 during transportation.

[0037] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. However, on the premise that technical personnel in this field understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic hammering device for low strain detection of pile foundation, characterized in that: include: A support plate, wherein a limiting opening is provided on the support plate; A connecting rod, the connecting rod being movably placed in the limiting opening; A percussion hammer, the percussion hammer is fixed to the bottom of the connecting rod; An air cushion, the air cushion being fixedly mounted on the bottom of the percussion hammer; A stabilizing component, the stabilizing component is arranged on the support plate, and the stabilizing component is used to stabilize the angle of the connecting rod; Multiple adjustment components, all of which are arranged on the support plate, and the adjustment components are used to locate the knocking position.

2. The automatic hammering device for pile foundation low strain detection according to claim 1 is characterized in that: The stabilizing component includes a metal block, a support frame and an electromagnet. The metal block is fixedly mounted on the top of the connecting rod, the support frame is detachably mounted on the top of the support plate, and the electromagnet is fixedly mounted on the bottom of the support frame. The electromagnet can adsorb the metal block.

3. The automatic hammering device for pile foundation low strain detection according to claim 2 is characterized in that: The adjustment assembly includes an adjusting screw, a limit block, an adjusting ring, a clamping ring and a limit rod. The adjusting screw is threadedly mounted on the support plate, the limit block is fixedly mounted on the adjusting screw, the adjusting ring is rotatably sleeved on the limit block, the clamping ring is fixed to the top of the support plate, the limit rod is movably mounted in the clamping ring and fixedly connected to the adjusting ring, and scale lines are provided on the limit rod.

4. The automatic hammering device for pile foundation low strain detection according to claim 3 is characterized in that: The bottoms of the plurality of adjustment rings are all fixedly mounted with support legs, the bottoms of the plurality of support legs are all fixedly mounted with bottom plates, and the bottoms of the bottom plates are fixedly mounted with anti-skid pads.

5. The automatic hammering device for pile foundation low strain detection according to claim 3 is characterized in that: A hand wheel is fixedly mounted on each of the plurality of limit blocks, and a clamping rod is fixedly mounted on each of the plurality of limit rods.

6. The automatic hammering device for pile foundation low strain detection according to claim 2 is characterized in that: A protective shell is fixedly sleeved outside the winding area of ​​the electromagnet, and a connecting socket is fixedly installed on the top of the supporting frame, and a power plug can be installed in the connecting socket.

7. The automatic hammering device for pile foundation low strain detection according to claim 3 is characterized in that: The surface of the connecting rod is provided with anti-slip grooves, and a plurality of supporting rods are rotatably installed at the bottom of the supporting frame. The plurality of supporting rods are all threadedly connected to the top of the supporting plate, and the plurality of supporting rods are respectively located between the plurality of limiting rods.

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