A rapid testing device for foundation bearing capacity

Abstract

This utility model discloses a rapid foundation bearing capacity testing device, including a drill rod and a guide rod. The guide rod is installed on the top of the drill rod and is detachably connected to the drill rod. A hammer is fitted onto the guide rod, and an electromagnet is mounted on the top of the hammer. A connecting plate is connected to the top of the electromagnet. A control box is located on the top of the guide rod. The control box contains a battery for powering various electronic components. An electric push rod is mounted on the back of the control box, and its output end is connected to the connecting plate. The electromagnet is electrically connected to the control box. This utility model utilizes the combination of the drill rod, guide rod, and hammer to drive the drill rod into the ground. The bearing capacity of the foundation is determined by the depth to which the drill rod is driven. The control box, located on the top of the guide rod, contains a battery that powers the electric push rod and electromagnet. The electric push rod, in conjunction with the electromagnet, can attract the hammer.

Description

Technical Field

[0001] This utility model relates to the field of bearing capacity testing technology, specifically a rapid testing device for foundation bearing capacity. Background Technology

[0002] Foundation bearing capacity is a key parameter in the construction of infrastructure projects such as buildings, roads, and water conservancy projects, directly affecting the safety and stability of the engineering structure. Accurate and rapid testing of foundation bearing capacity is of great significance for engineering design optimization, construction quality control, and subsequent safety assessment.

[0003] Currently, common methods for testing foundation bearing capacity include static load tests, dynamic penetration tests, and static penetration tests. Among them, static load tests, as a traditional testing method, directly demonstrate the bearing capacity of the foundation by applying loads to the foundation in stages and measuring settlement, and the test results are quite accurate. However, this method has obvious limitations: it requires the construction of complex reaction devices, the equipment used is relatively bulky, the operation process is cumbersome, the testing cycle is long, and it has strict requirements for site conditions, making it unsuitable for rapid testing scenarios in narrow spaces or emergency rescue projects.

[0004] Utility model patent CN220433754U discloses a foundation bearing capacity testing device, including a hammer pad, probe rods and connecting rods installed on both sides of the hammer pad, a through hammer mounted on the connecting rod, and a penetrator head set at the bottom of the probe rod. The bottom of the probe rod is movably fitted with a horn-shaped limiting sleeve, and several limiting rods with a frustum-shaped bottom are installed on the outside of the limiting sleeve. A distance measuring mechanism is provided between the limiting sleeve and the hammer pad. The distance measuring mechanism includes a fixed block connected to one side of the limiting sleeve, a distance measuring ruler installed on the fixed block, and a distance measuring block movably mounted on the distance measuring ruler. The distance measuring block is installed on the hammer pad.

[0005] The foundation bearing capacity testing device involved in the aforementioned patent is essentially a dynamic penetration test device. However, existing devices of this type have operational drawbacks: the mandrel needs to be manually pulled up by workers and allowed to fall freely, and this operation needs to be repeated multiple times. This operating mode easily leads to muscle soreness for workers, placing high demands on their physical strength, and thus affecting the efficiency of bearing capacity testing at multiple test points. Utility Model Content

[0006] The purpose of this invention is to provide a rapid foundation bearing capacity testing device, which aims to improve the problem that the existing foundation bearing capacity testing device requires manual lifting of the mandrel, which is labor-intensive and not conducive to efficient testing at multiple points.

[0007] This utility model is implemented as follows: A rapid foundation bearing capacity testing device includes a drill rod and a guide rod. The guide rod is installed on the top of the drill rod and is detachably connected to the drill rod. A through-hole hammer is sleeved on the guide rod, and an electromagnet is installed on the top of the through-hole hammer. A connecting plate is connected to the top of the electromagnet. A control box is installed on the top of the guide rod. The control box contains a battery for powering various electronic control components. An electric push rod is installed on the back of the control box, and the output end of the electric push rod is connected to the connecting plate. The electromagnet is electrically connected to the control box.

[0008] Preferably, the bottom end of the drill rod is provided with a first cone, and the top of the drill rod is provided with a support platform, and the middle part of the support platform is provided with a first threaded groove.

[0009] Preferably, the guide rod is provided with studs at both the top and bottom ends, and the studs are threadedly connected to the first threaded groove.

[0010] Preferably, the hammer has a first hole in the middle, and the first hole is fitted onto the guide rod.

[0011] Preferably, the electromagnet has a male connector on its side and an adapter on its top, and a second hole in its middle, which is fitted onto the guide rod.

[0012] Preferably, one end of the connecting plate is provided with a connector, the connector has a threaded hole in the middle, the threaded hole is threadedly connected to the adapter, and the other end of the connecting plate is provided with a through hole.

[0013] Preferably, the control box has a control panel on the front, a connection slot on the top, an installation port on the back, a fixing groove on the upper and lower surfaces near the installation port, an installation connector in the middle of the bottom surface, a second threaded groove in the middle of the installation connector, a wire on one side of the bottom of the control box, a female connector at the end of the wire, and a charging slot on one side of the control box.

[0014] Preferably, the electric push rod has a connecting wire at its top and a connecting plug at its end, the connecting plug being connected to a connecting slot. The electric push rod also has a pair of fixing plates on its side, each with a fixing hole. The fixing plates engage with the inside of a fixing slot. The electric push rod is fixed to the back of the control box by bolts passing through the fixing holes. The output end of the electric push rod has a telescopic rod, the bottom end of which has a limiting plate. The bottom surface of the limiting plate has a screw section, and one end of the screw passing through the connecting plate has a pressure cap.

[0015] Preferably, the bracket is also included, the bracket having a guide hole in the middle, the guide hole being fitted onto the bottom of the drill rod, the bracket having multiple diagonal braces on its side, and the bottom of each diagonal brace having a foot.

[0016] Preferably, it also includes an anchor rod, the base is provided with an anchor hole, and the bottom end of the anchor rod is provided with a second cone head, the second cone head passes through the anchor hole and is anchored to the foundation, and the top end of the anchor rod is provided with an end plate, and the top of the end plate is provided with a pull ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model utilizes the combination of a chisel, a guide rod, and a hammer to drive the chisel into the ground. The depth of the driven chisel is used to determine the bearing capacity of the foundation. A control box is located at the top of the guide rod, containing a battery that powers an electric actuator and an electromagnet. The electric actuator, in conjunction with the electromagnet, attracts the hammer. After the electric actuator pulls up the hammer, it de-energizes the solenoid valve, allowing the hammer to fall freely and strike the top of the chisel. This method avoids the need for manual hammer lifting, saving worker energy and enabling efficient testing of multiple points.

[0018] 2. This utility model is equipped with a bracket, which can guide the drill rod to ensure that the drill rod can be smoothly inserted into the ground.

[0019] 3. This utility model anchors the support by setting anchor rods, ensuring that the support can be stably placed on the ground, which facilitates the stable guidance of the support to the drill rod. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the drill rod of this utility model; Figure 3 This is a schematic diagram of the guide rod of this utility model; Figure 4 This is a schematic diagram of the structure of the mandrel of this utility model; Figure 5 This is a schematic diagram of the structure of the electromagnet of this utility model; Figure 6 This is a schematic diagram of the structure of the connecting plate of this utility model; Figure 7 This is a structural schematic diagram of the control box of this utility model from a front-view angle; Figure 8 This is a structural schematic diagram of the control box of this utility model from a front-end oblique tilting angle; Figure 9 This is a schematic diagram of the structure of the electric push rod of this utility model; Figure 10 This is a structural schematic diagram of the bracket of this utility model; Figure 11This is a schematic diagram of the structure of the anchor rod of this utility model.

[0021] In the diagram: 1. Drill rod; 11. First cone; 12. Support; 13. First threaded groove; 2. Guide rod; 21. Stud; 3. Through hammer; 31. First socket; 4. Electromagnet; 41. Connecting male; 42. Adapter; 43. Second socket; 5. Connecting plate; 51. Connector; 52. Threaded hole; 53. Through hole; 6. Control box; 61. Control panel; 62. Connecting slot; 63. Fixing slot; 64. Mounting port; 65. 66. Charging slot; 67. Wire; 68. Connecting female head; 69. Mounting connector; 70. Second threaded groove; 71. Electric push rod; 72. Connecting wire; 73. Connecting plug; 74. Fixing plate; 75. Telescopic rod; 76. Limiting plate; 77. Pressure cap; 8. Bracket; 81. Guide hole; 82. Diagonal brace; 83. Foot; 84. Anchoring hole; 95. Anchoring rod; 91. Second cone head; 92. End plate; 93. Pull ring. Detailed Implementation

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1 like Figure 1As shown, a rapid foundation bearing capacity testing device includes a drill rod 1 and a guide rod 2. The guide rod 2 is installed on top of the drill rod 1 and is detachably connected to the drill rod 1. The drill rod 1 is designed for easy insertion into the soil of the foundation, and a hammer 3 is fitted onto the guide rod 2. The guide rod 2 guides the hammer 3, allowing it to fall freely and strike the drill rod 1. An electromagnet 4 is installed on top of the hammer 3. The hammer 3 is made of iron, and the electromagnet valve facilitates the attraction of the hammer 3. A connecting plate 5 is connected to the top of the electromagnet 4, and a control box 6 is located on the top of the guide rod 2. The control box 6 contains a battery that powers the various electronic components. An electric push rod 7 is installed on the back of the control box 6. The output end of the electric push rod 7 is connected to the connecting plate 5, and the electromagnet 4 is electrically connected to the control box 6. This structure controls the extension and retraction of the electric push rod 7 through the control box 6. The electric push rod 7 is connected to the electromagnet 4 through the connecting plate 5. When the electric push rod 7 lifts the mandrel 3, the electromagnet 4 is energized and can attract the mandrel 3. The electric push rod 7 can also move the mandrel 3 to the top of the guide rod 2. A proximity switch is set at the bottom of the electric push rod 7. When the mandrel 3 moves into position, the electromagnet 4 also approaches the proximity switch. At this time, the electromagnet 4 is de-energized. After the electromagnet 4 is de-energized, the mandrel 3 falls freely and hits the drill rod 1, thereby achieving the downward impact of the drill rod 1. The bearing capacity of the foundation is determined by the depth of the impact of the drill rod 1.

[0024] like Figure 2 As shown, the bottom end of the drill rod 1 is provided with a first cone 11, which facilitates the insertion of the drill rod 1 into the foundation. The top of the drill rod 1 is provided with a support platform 12, and the middle of the support platform 12 is provided with a first threaded groove 13. The support platform 12 and the first threaded groove 13 facilitate connection with the guide rod 2, which facilitates the disassembly and use of the guide rod 2, and also facilitates the disassembly of the entire device.

[0025] like Figure 3 As shown, the guide rod 2 is provided with studs 21 at both the top and bottom. The studs 21 are threadedly connected to the first threaded groove 13, which facilitates the installation and fixation of the guide rod 2.

[0026] like Figure 4 As shown, the center of the hammer 3 is provided with a first hole 31, which is fitted onto the guide rod 2, so that the hammer 3 can move up and down along the guide rod 2.

[0027] like Figure 5 As shown, the electromagnet 4 has a male connector 41 on its side, which facilitates electrical connection between the electromagnet 4 and the control box 6. The top of the electromagnet 4 has an adapter 42, which allows for connection to the connecting plate 5. The middle of the electromagnet 4 has a second sleeve hole 43, which fits onto the guide rod 2, facilitating stable up-and-down movement of the electromagnet 4.

[0028] like Figure 6As shown, one end of the connecting plate 5 is provided with a connector 51, and the connector 51 has a threaded hole 52 in the middle. The threaded hole 52 is threadedly connected to the adapter 42, which facilitates the stable connection of the connecting plate 5 to the electromagnet 4. The other end of the connecting plate 5 is provided with a through hole 53, which facilitates the connection between the output end of the electric push rod 7 and the connecting plate 5.

[0029] like Figure 7 and Figure 8 As shown, the control box 6 has a control panel 61 on the front, which facilitates the operation of the entire device. The top of the control box 6 has a connection slot 62 for electrical connection with the electric push rod 7. The back of the control box 6 has a mounting opening 64 for easy installation of the electric push rod 7. The upper and lower surfaces of the control box 6 have fixing grooves 63 near the mounting opening 64 for stable mounting of the electric push rod 7 to the back of the control box 6. The bottom surface of the control box 6 has a mounting connector 68 in the center, with a second threaded groove 69 in the center, for easy connection with the guide rod 2. A wire 66 is located on one side of the bottom of the control box 6, with a connecting female 67 at its end, for easy connection with the electromagnet 4. A charging slot 65 is located on one side of the control box 6 for charging the internal battery.

[0030] like Figure 9 As shown, the electric actuator 7 has a connecting wire 71 at its top, and a connecting plug 72 at its end. The connecting plug 72 connects to the connecting slot 62, facilitating the use of the electric actuator 7 with the control box 6. The electric actuator 7 also has a pair of fixing plates 73 on its side, with fixing holes 74 on each plate. The fixing plates 73 engage with the inside of the fixing slot 63, and the electric actuator 7 is fixed to the back of the control box 6 by bolts passing through the fixing holes 74, ensuring the electric actuator 7 is stable on the control box 6. The output end of the electric actuator 7 has a telescopic rod 75, and the bottom end of the telescopic rod 75 has a limiting plate 76. The bottom surface of the limiting plate 76 has a screw section, and one end of the screw that passes through the connecting plate 5 has a pressure cap 77. This structure facilitates a stable connection between the telescopic rod 75 and the connecting plate 5, thereby driving the solenoid valve to move stably up and down.

[0031] Example 2 like Figure 1As shown, a rapid foundation bearing capacity testing device includes a drill rod 1 and a guide rod 2. The guide rod 2 is installed on top of the drill rod 1 and is detachably connected to the drill rod 1. The drill rod 1 is designed for easy insertion into the soil of the foundation, and a hammer 3 is fitted onto the guide rod 2. The guide rod 2 guides the hammer 3, allowing it to fall freely and strike the drill rod 1. An electromagnet 4 is installed on top of the hammer 3. The hammer 3 is made of iron, and the electromagnet valve facilitates the attraction of the hammer 3. A connecting plate 5 is connected to the top of the electromagnet 4, and a control box 6 is located on the top of the guide rod 2. The control box 6 contains a battery that powers the various electronic components. An electric push rod 7 is installed on the back of the control box 6. The output end of the electric push rod 7 is connected to the connecting plate 5, and the electromagnet 4 is electrically connected to the control box 6. This structure controls the extension and retraction of the electric push rod 7 through the control box 6. The electric push rod 7 is connected to the electromagnet 4 through the connecting plate 5. When the electric push rod 7 lifts the mandrel 3, the electromagnet 4 is energized and can attract the mandrel 3. The electric push rod 7 can also move the mandrel 3 to the top of the guide rod 2. A proximity switch is set at the bottom of the electric push rod 7. When the mandrel 3 moves into position, the electromagnet 4 also approaches the proximity switch. At this time, the electromagnet 4 is de-energized. After the electromagnet 4 is de-energized, the mandrel 3 falls freely and hits the drill rod 1, thereby achieving the downward impact of the drill rod 1. The bearing capacity of the foundation is determined by the depth of the impact of the drill rod 1.

[0032] like Figure 2 As shown, the bottom end of the drill rod 1 is provided with a first cone 11, which facilitates the insertion of the drill rod 1 into the foundation. The top of the drill rod 1 is provided with a support platform 12, and the middle of the support platform 12 is provided with a first threaded groove 13. The support platform 12 and the first threaded groove 13 facilitate connection with the guide rod 2, which facilitates the disassembly and use of the guide rod 2, and also facilitates the disassembly of the entire device.

[0033] like Figure 3 As shown, the guide rod 2 is provided with studs 21 at both the top and bottom. The studs 21 are threadedly connected to the first threaded groove 13, which facilitates the installation and fixation of the guide rod 2.

[0034] like Figure 4 As shown, the center of the hammer 3 is provided with a first hole 31, which is fitted onto the guide rod 2, so that the hammer 3 can move up and down along the guide rod 2.

[0035] like Figure 5 As shown, the electromagnet 4 has a male connector 41 on its side, which facilitates electrical connection between the electromagnet 4 and the control box 6. The top of the electromagnet 4 has an adapter 42, which allows for connection to the connecting plate 5. The middle of the electromagnet 4 has a second sleeve hole 43, which fits onto the guide rod 2, facilitating stable up-and-down movement of the electromagnet 4.

[0036] like Figure 6As shown, one end of the connecting plate 5 is provided with a connector 51, and the connector 51 has a threaded hole 52 in the middle. The threaded hole 52 is threadedly connected to the adapter 42, which facilitates the stable connection of the connecting plate 5 to the electromagnet 4. The other end of the connecting plate 5 is provided with a through hole 53, which facilitates the connection between the output end of the electric push rod 7 and the connecting plate 5.

[0037] like Figure 7 and Figure 8 As shown, the control box 6 has a control panel 61 on the front, which facilitates the operation of the entire device. The top of the control box 6 has a connection slot 62 for electrical connection with the electric push rod 7. The back of the control box 6 has a mounting opening 64 for easy installation of the electric push rod 7. The upper and lower surfaces of the control box 6 have fixing grooves 63 near the mounting opening 64 for stable mounting of the electric push rod 7 to the back of the control box 6. The bottom surface of the control box 6 has a mounting connector 68 in the center, with a second threaded groove 69 in the center, for easy connection with the guide rod 2. A wire 66 is located on one side of the bottom of the control box 6, with a connecting female 67 at its end, for easy connection with the electromagnet 4. A charging slot 65 is located on one side of the control box 6 for charging the internal battery.

[0038] like Figure 9 As shown, the electric actuator 7 has a connecting wire 71 at its top, and a connecting plug 72 at its end. The connecting plug 72 connects to the connecting slot 62, facilitating the use of the electric actuator 7 with the control box 6. The electric actuator 7 also has a pair of fixing plates 73 on its side, with fixing holes 74 on each plate. The fixing plates 73 engage with the inside of the fixing slot 63, and the electric actuator 7 is fixed to the back of the control box 6 by bolts passing through the fixing holes 74, ensuring the electric actuator 7 is stable on the control box 6. The output end of the electric actuator 7 has a telescopic rod 75, and the bottom end of the telescopic rod 75 has a limiting plate 76. The bottom surface of the limiting plate 76 has a screw section, and one end of the screw that passes through the connecting plate 5 has a pressure cap 77. This structure facilitates a stable connection between the telescopic rod 75 and the connecting plate 5, thereby driving the solenoid valve to move stably up and down.

[0039] like Figure 10 As shown, the system also includes a support 8. The support 8 has a guide hole 81 in its center, which is fitted onto the bottom of the drill rod 1 to provide stable support for the drill rod 1, thus facilitating its stable driving into the foundation soil. The support 8 has multiple diagonal braces 82 on its sides, with bases 83 at the bottom of each brace. The cooperation between the diagonal braces 82 and the bases 83 ensures that the support 8 can be stably placed on the ground.

[0040] Example 3 like Figure 1As shown, a rapid foundation bearing capacity testing device includes a drill rod 1 and a guide rod 2. The guide rod 2 is installed on top of the drill rod 1 and is detachably connected to the drill rod 1. The drill rod 1 is designed for easy insertion into the soil of the foundation, and a hammer 3 is fitted onto the guide rod 2. The guide rod 2 guides the hammer 3, allowing it to fall freely and strike the drill rod 1. An electromagnet 4 is installed on top of the hammer 3. The hammer 3 is made of iron, and the electromagnet valve facilitates the attraction of the hammer 3. A connecting plate 5 is connected to the top of the electromagnet 4, and a control box 6 is located on the top of the guide rod 2. The control box 6 contains a battery that powers the various electronic components. An electric push rod 7 is installed on the back of the control box 6. The output end of the electric push rod 7 is connected to the connecting plate 5, and the electromagnet 4 is electrically connected to the control box 6. This structure controls the extension and retraction of the electric push rod 7 through the control box 6. The electric push rod 7 is connected to the electromagnet 4 through the connecting plate 5. When the electric push rod 7 lifts the mandrel 3, the electromagnet 4 is energized and can attract the mandrel 3. The electric push rod 7 can also move the mandrel 3 to the top of the guide rod 2. A proximity switch is set at the bottom of the electric push rod 7. When the mandrel 3 moves into position, the electromagnet 4 also approaches the proximity switch. At this time, the electromagnet 4 is de-energized. After the electromagnet 4 is de-energized, the mandrel 3 falls freely and hits the drill rod 1, thereby achieving the downward impact of the drill rod 1. The bearing capacity of the foundation is determined by the depth of the impact of the drill rod 1.

[0041] like Figure 2 As shown, the bottom end of the drill rod 1 is provided with a first cone 11, which facilitates the insertion of the drill rod 1 into the foundation. The top of the drill rod 1 is provided with a support platform 12, and the middle of the support platform 12 is provided with a first threaded groove 13. The support platform 12 and the first threaded groove 13 facilitate connection with the guide rod 2, which facilitates the disassembly and use of the guide rod 2, and also facilitates the disassembly of the entire device.

[0042] like Figure 3 As shown, the guide rod 2 is provided with studs 21 at both the top and bottom. The studs 21 are threadedly connected to the first threaded groove 13, which facilitates the installation and fixation of the guide rod 2.

[0043] like Figure 4 As shown, the center of the hammer 3 is provided with a first hole 31, which is fitted onto the guide rod 2, so that the hammer 3 can move up and down along the guide rod 2.

[0044] like Figure 5 As shown, the electromagnet 4 has a male connector 41 on its side, which facilitates electrical connection between the electromagnet 4 and the control box 6. The top of the electromagnet 4 has an adapter 42, which allows for connection to the connecting plate 5. The middle of the electromagnet 4 has a second sleeve hole 43, which fits onto the guide rod 2, facilitating stable up-and-down movement of the electromagnet 4.

[0045] like Figure 6As shown, one end of the connecting plate 5 is provided with a connector 51, and the connector 51 has a threaded hole 52 in the middle. The threaded hole 52 is threadedly connected to the adapter 42, which facilitates the stable connection of the connecting plate 5 to the electromagnet 4. The other end of the connecting plate 5 is provided with a through hole 53, which facilitates the connection between the output end of the electric push rod 7 and the connecting plate 5.

[0046] like Figure 7 and Figure 8 As shown, the control box 6 has a control panel 61 on the front, which facilitates the operation of the entire device. The top of the control box 6 has a connection slot 62 for electrical connection with the electric push rod 7. The back of the control box 6 has a mounting opening 64 for easy installation of the electric push rod 7. The upper and lower surfaces of the control box 6 have fixing grooves 63 near the mounting opening 64 for stable mounting of the electric push rod 7 to the back of the control box 6. The bottom surface of the control box 6 has a mounting connector 68 in the center, with a second threaded groove 69 in the center, for easy connection with the guide rod 2. A wire 66 is located on one side of the bottom of the control box 6, with a connecting female 67 at its end, for easy connection with the electromagnet 4. A charging slot 65 is located on one side of the control box 6 for charging the internal battery.

[0047] like Figure 9 As shown, the electric actuator 7 has a connecting wire 71 at its top, and a connecting plug 72 at its end. The connecting plug 72 connects to the connecting slot 62, facilitating the use of the electric actuator 7 with the control box 6. The electric actuator 7 also has a pair of fixing plates 73 on its side, with fixing holes 74 on each plate. The fixing plates 73 engage with the inside of the fixing slot 63, and the electric actuator 7 is fixed to the back of the control box 6 by bolts passing through the fixing holes 74, ensuring the electric actuator 7 is stable on the control box 6. The output end of the electric actuator 7 has a telescopic rod 75, and the bottom end of the telescopic rod 75 has a limiting plate 76. The bottom surface of the limiting plate 76 has a screw section, and one end of the screw that passes through the connecting plate 5 has a pressure cap 77. This structure facilitates a stable connection between the telescopic rod 75 and the connecting plate 5, thereby driving the solenoid valve to move stably up and down.

[0048] like Figure 10 As shown, the system also includes a support 8. The support 8 has a guide hole 81 in its center, which is fitted onto the bottom of the drill rod 1 to provide stable support for the drill rod 1, thus facilitating its stable driving into the foundation soil. The support 8 has multiple diagonal braces 82 on its sides, with bases 83 at the bottom of each brace. The cooperation between the diagonal braces 82 and the bases 83 ensures that the support 8 can be stably placed on the ground.

[0049] like Figure 11As shown, it also includes an anchor rod 9, with an anchor hole 84 on the base 83, and a second cone 91 at the bottom end of the anchor rod 9. The second cone 91 passes through the anchor hole 84 and is anchored to the foundation. The top end of the anchor rod 9 is provided with an end plate 92, and the top of the end plate 92 is provided with a pull ring 93. This structure facilitates the anchor rod 9 to pass smoothly through the anchor hole 84 to fix the bracket 8 to the foundation, ensuring the use of the bracket 8. The pull ring 93 also facilitates the pulling and disassembly of the anchor rod 9.

[0050] Working principle: In use, the bracket 8 is first fixed to the foundation to be tested via the anchor rod 9. The second cone 91 at the bottom of the anchor rod 9 passes through the anchor hole 84 of the base foot 83 and is hammered into the foundation. The bracket 8 is stabilized with the diagonal brace 82 and the base foot 83. Then, the bottom of the drill rod 1 is inserted into the guide hole 81 of the bracket 8. The drill rod 1 is threaded to the first threaded groove 13 of the top support 12 of the top support 12 via the stud 21 at the bottom of the guide rod 2. This completes the detachable assembly of the drill rod 1 and the guide rod 2, providing stable guidance and support for subsequent impact. The control box 6 is installed on the top of the guide rod 2 with the electric push rod 7. The electromagnet 4 is connected to the output end of the electric push rod 7 with the connecting plate 5. The battery in the control box 6 supplies power to the electric push rod 7, electromagnet 4, and other electronic control components. After the equipment is started, the control box 6 controls the electric push rod 7 to retract, which drives the electromagnet 4 (which is threaded to the connecting plate 5) to rise along the guide rod 2 via the connecting plate 5. Since the hammer 3 is made of iron, the electromagnet 4 can firmly attract the hammer 3 when it is energized, and simultaneously drive the hammer 3 to move upward along the guide rod 2 (the hammer 3 is fitted through the first central hole 31) until the hammer 3 reaches the top of the guide rod 2. When the hammer 3 moves into position, the electromagnet 4 approaches the proximity switch at the bottom of the electric push rod 7, triggering the equipment to automatically control the electromagnet 4 to de-energize. The hammer 3, losing its attraction, falls freely along the guide rod 2 and accurately strikes the top support 12 of the drill rod 1, using the impact force to push the drill rod 1 to overcome the soil resistance and insert it into the ground. By repeating the process of "electric push rod 7 lifting the core hammer 3 — electromagnet 4 de-energizing and releasing — core hammer 3 impacting the drill rod 1", the depth to which the drill rod 1 is driven into the foundation each time is observed and recorded. The stronger the foundation bearing capacity, the greater the resistance of the soil to the drill rod 1, and the shallower the drill rod 1 is driven into the ground, and vice versa. Finally, the foundation bearing capacity can be determined based on the actual driving depth of the drill rod 1.

[0051] Workflow: First, the staff moves the device components to the foundation site to be tested and prioritizes fixing the bracket 8: After unfolding the bracket 8, align its guide hole 81 with the test position, take out the anchor rod 9, and insert the second cone 91 into the anchor hole 84 of the base foot 83 and hammer it into the foundation. Confirm the anchoring is firm through the end plate 92 and pull ring 93 to ensure that the bracket 8 is stably placed with the cooperation of the diagonal brace 82 and the base foot 83, and avoid displacement during the test. Next, assemble the device: insert the bottom of the drill rod 1 into the guide hole 81 of the bracket 8, and then screw the stud 21 at the bottom of the guide rod 2 into the first threaded groove 13 of the drill rod 1 base 12 to complete the main rod assembly. Then, put the through hammer 3 and electromagnet 4 onto the guide rod 2. Then, install the electrical control components. Attach the electric push rod 7 to the fixing groove 63 on the back of the control box 6 through the fixing plate 73 and tighten it with bolts through the fixing hole 74. At the same time, insert the electric push rod 7 connecting plug 72 into the connecting slot 62 of the control box 6 and connect the female connector 67 of the control box 6 to the male connector 41 of the electromagnet 4 to ensure that the circuit is unobstructed. Fix the connecting plate 5 to the electromagnet 4 adapter 42 and the electric push rod 7 telescopic rod 75 screw (screw on the pressure cap 77) to complete the overall assembly. After assembly, the staff started the equipment through the front panel of the control box 6 and observed that after the electric push rod 7 drove the through hammer 3 to the top, the electromagnet 4 was de-energized and released the through hammer 3 to impact the drill rod 1. The operation was repeated multiple times to obtain stable data, and the depth of the drill rod 1 into the ground was recorded in detail each time. After the test was completed, the equipment was turned off and the circuit was disconnected. The electric push rod 7, guide rod 2, and drill rod 1 were disassembled in sequence, the anchor rod 9 was pulled out, and all parts were organized and stored for future use.

[0052] In summary, compared with the prior art, this application utilizes the cooperation of the drill rod 1, guide rod 2, and hammer 3 to drive the drill rod 1 into the ground, and the bearing capacity of the foundation is determined by the depth of the drive rod 1. Furthermore, the guide rod 2 has a control box 6 at its top, which contains a battery that powers the electric push rod 7 and electromagnet 4. The electric push rod 7, in conjunction with the electromagnet 4, can attract the hammer 3. After the electric push rod 7 pulls up the hammer 3, it de-energizes the solenoid valve, allowing the hammer 3 to fall freely and strike the top of the drill rod 1. This method avoids the drawback of manually pulling up the hammer 3, saves the worker's energy, and assists in efficiently testing multiple points.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rapid foundation bearing capacity testing device, comprising a drill rod (1) and a guide rod (2), characterized in that, The guide rod (2) is installed on the top of the drill rod (1), and the guide rod (2) is detachably connected to the drill rod (1); and a through hammer (3) is sleeved on the guide rod (2), an electromagnet (4) is provided on the top of the through hammer (3), a connecting plate (5) is connected to the top of the electromagnet (4), a control box (6) is provided on the top of the guide rod (2), the control box (6) contains a battery for powering various electronic control components, an electric push rod (7) is installed on the back of the control box (6), the output end of the electric push rod (7) is connected to the connecting plate (5), and the electromagnet (4) is electrically connected to the control box (6).

2. The rapid foundation bearing capacity testing device according to claim 1, characterized in that, The bottom end of the drill rod (1) is provided with a first cone head (11), and the top of the drill rod (1) is provided with a support platform (12), and the middle part of the support platform (12) is provided with a first threaded groove (13).

3. The rapid foundation bearing capacity testing device according to claim 2, characterized in that, The guide rod (2) is provided with studs (21) at both the top and bottom ends, and the studs (21) are threadedly connected to the first threaded groove (13).

4. The rapid foundation bearing capacity testing device according to claim 1, characterized in that, The center of the hammer (3) is provided with a first sleeve hole (31), which is fitted onto the guide rod (2).

5. The rapid foundation bearing capacity testing device according to claim 1, characterized in that, The electromagnet (4) has a male connector (41) on its side and an adapter (42) on its top. The electromagnet (4) has a second sleeve hole (43) in its middle, which is fitted onto the guide rod (2).

6. The rapid foundation bearing capacity testing device according to claim 5, characterized in that, One end of the connecting plate (5) is provided with a connector (51), and the middle part of the connector (51) is provided with a threaded hole (52). The threaded hole (52) is threadedly connected to the adapter (42). The other end of the connecting plate (5) is provided with a through hole (53).

7. The rapid foundation bearing capacity testing device according to claim 3, characterized in that, The control box (6) has a control panel (61) on the front, a connection slot (62) on the top, an installation port (64) on the back, a fixing groove (63) on the upper and lower surfaces near the installation port (64), an installation connector (68) in the middle of the bottom surface, a second threaded groove (69) in the middle of the installation connector (68), a wire (66) on one side of the bottom of the control box (6), a connecting female head (67) at the end of the wire (66), and a charging slot (65) on one side of the control box (6).

8. The rapid foundation bearing capacity testing device according to claim 7, characterized in that, The electric push rod (7) has a connecting line (71) at the top and a connecting plug (72) at the end of the connecting line (71). The connecting plug (72) is connected to the connecting slot (62). The electric push rod (7) has a pair of fixing plates (73) on its side. The fixing plates (73) have fixing holes (74) on them. The fixing plates (73) are engaged in the inner side of the fixing slot (63). The electric push rod (7) is fixed to the back of the control box (6) by bolts passing through the fixing holes (74). The output end of the electric push rod (7) has a telescopic rod (75). The bottom end of the telescopic rod (75) has a limiting plate (76). The bottom surface of the limiting plate (76) has a screw. The end of the screw that passes through the connecting plate (5) has a pressure cap (77).

9. A rapid foundation bearing capacity testing device according to any one of claims 1-8, characterized in that, It also includes a bracket (8), which has a guide hole (81) in the middle. The guide hole (81) is fitted onto the bottom of the drill rod (1). The bracket (8) has multiple diagonal braces (82) on its side, and the bottom of the diagonal braces (82) has a foot (83).

10. A rapid foundation bearing capacity testing device according to claim 9, characterized in that, It also includes an anchor rod (9), the base (83) is provided with an anchor hole (84), and the bottom end of the anchor rod (9) is provided with a second cone (91), the second cone (91) passes through the anchor hole (84) and is anchored on the foundation, and the top end of the anchor rod (9) is provided with an end plate (92), and the top end of the end plate (92) is provided with a pull ring (93).

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