Foundation detection device for constructional engineering

Abstract

The invention discloses a foundation detection device for constructional engineering, and particularly relates to the technical field of foundation detection devices.The foundation detection device comprises an outer frame, a hydraulic cylinder is fixedly connected to the top wall of the outer frame, and extrusion assemblies are fixedly installed in the middle of the left side wall and the middle of the right side wall of the inner surface of the outer frame correspondingly; a pushing assembly is fixedly installed at the output end of the hydraulic cylinder through a piston rod, supporting assemblies are fixedly installed on the lower portion of the left side wall of the inner surface of the outer frame and the lower portion of the right side wall of the inner surface of the outer frame, and a conical head assembly is jointly arranged on the inner surfaces of the two supporting assemblies. According to the foundation detection device for constructional engineering, by arranging the extrusion assembly and the pushing assembly, when the bearing capacity of a foundation is detected, switching between a static sounding mode and a dynamic sounding mode can be provided, and the situation that when the bearing capacity of the foundation is detected, multiple detection devices need to be adopted due to different soil layer materials is avoided; and the universality of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation detection devices, and in particular to a foundation detection device for construction engineering. Background Art

[0002] In construction projects, foundation testing is an important step in ensuring soil bearing capacity. Commonly used foundation testing devices include static penetration testers and dynamic penetration testers.

[0003] The static penetration tester inserts a pointed probe vertically into the soil, applies a steady force, and measures the pressure and displacement required to penetrate the soil layer. This process can evaluate the bearing capacity and physical properties of the soil, providing accurate soil classification and density data. This method is applicable to various soil types, is easy to operate, and produces reliable results.

[0004] Unlike static penetration testing, dynamic penetration testing uses a free-falling hammer to release the hammer from a certain height, causing it to hit the probe rod and push it deep into the soil. By recording the falling height of the hammer and the depth of the probe rod into the soil, the soil resistance is analyzed. This method is suitable for quickly evaluating soil conditions, especially in hard soil or rocky layers.

[0005] Chinese patent publication number CN215948288U discloses a foundation detection device for construction projects, which relates to the field of foundation detection technology and includes a base, an adjustment component arranged above the base, an impact component arranged below the adjustment component, and a moving component arranged below the base; the adjustment component includes a lower left support column, an upper left support column, a lower right support column, and an upper right support column. The above patent document is a foundation detection device for construction projects. Through the coordinated use of the upper left support column, the lower left support column, the lower right support column, the upper right support column, the positioning hole, the positioning circular plate, the positioning screw and the positioning nut, the distance between the rope loop and the foundation surface can be adjusted, thereby achieving the adjustment of the falling force of the impact block, effectively expanding the scope of application of the foundation detection device for construction projects and making it more convenient to use.

[0006] Although the equipment in the above patent document can detect the bearing capacity of the foundation during use, in actual use, it can only be detected by dynamic probing and cannot switch between dynamic probing and static probing. When static probing is required in the future, it is necessary to switch the detection device for detection, thereby reducing the detection efficiency. Summary of the Invention

[0007] The main purpose of the present invention is to provide a foundation detection device for construction projects, which can effectively solve the problem that in actual use, only dynamic probing can be used for detection, and it is impossible to switch between dynamic probing and static probing. When static probing is required in the future, it is necessary to switch the detection device for detection, thereby reducing the detection efficiency.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A foundation detection device for construction projects includes an external frame, the top wall of the external frame is fixedly connected to a hydraulic cylinder, the left and right sides of the vertical part of the rear end of the external frame are fixedly connected to connecting plates, the middle of the left side wall of the inner surface of the external frame and the middle of the right side wall of the inner surface are fixedly installed with extrusion components, the output end of the hydraulic cylinder is fixedly installed with a pushing component through a piston rod, the lower part of the left side wall of the inner surface of the external frame and the lower part of the right side wall of the inner surface are fixedly installed with support components, and the inner surfaces of the two support components are commonly provided with a cone head component.

[0010] Preferably, a guide groove 1 is provided on the lower middle side of the left side wall of the inner surface of the outer frame and a guide groove 1 is provided on the lower middle side of the right side wall of the inner surface of the outer frame, two guide grooves 2 are provided on the lower left side wall of the inner surface of the outer frame and a guide groove 3 is provided on the lower middle side edge of the left side wall of the inner surface of the outer frame and a guide groove 3 is provided on the lower middle side edge of the right side wall of the inner surface of the outer frame, the inner surfaces of the two guide grooves 3 are slidably connected to a bottom plate, and a handle is fixedly connected to the left end of the bottom plate.

[0011] Preferably, the extrusion assembly includes two support rods fixedly connected to the middle part of the left side wall of the inner surface of the outer frame, the upper ends of the two support rods are fixedly connected to a fixing ring, the inner surfaces of the two fixing rings are commonly fixedly connected to a main rod, the right end of the main rod is provided with a mounting groove 1, the right side wall of the inner surface of the mounting groove 1 is fixedly connected to a spring 1, the right end of the spring 1 is fixedly connected to an extrusion rod, and the extrusion rod is slidably connected to the inner surface of the mounting groove 1.

[0012] Preferably, the pushing assembly includes a hollow push head, the upper end of the hollow push head is fixedly connected to the output end of the hydraulic cylinder through a piston rod, and a circular hole one is provided at the middle left and middle right portions of the outer surface of the hollow push head, which penetrates the inner surface of the hollow push head, and a conical hollow column is provided on the inner surface of the hollow push head, and a spring two is provided at the upper left and upper right portions of the outer surface of the conical hollow column, and the inner surfaces of the two springs are slidably connected with a round head rod, and the ends of the round head rod and the spring two on the same side that are close to each other are jointly fixedly connected with a mounting groove two, and the lower left portion and the lower right portion of the outer surface of the conical hollow column are fixedly connected to two guide rods symmetrically distributed front and back, and the lower left and right portions of the inner surface of the conical hollow column are provided with an embedding groove communicating with the inner cavity of the conical hollow column.

[0013] Preferably, a rectangular groove is provided at the lower part of the end of the inner surface of the embedded groove on the same side that is close to each other, and an extrusion block is slidably connected to the inner surface of the rectangular groove on the same side, and the extrusion block on the same side and the end of the rectangular groove on the same side that is close to each other are jointly fixedly connected with two springs three that are symmetrically distributed up and down.

[0014] Preferably, the outer diameter of the round-head rod on the same side is smaller than the inner diameter of the circular hole on the same side, and the outer diameter of the extrusion rod is smaller than the inner diameter of the circular hole.

[0015] Preferably, the support assembly includes a fixed rod fixedly connected to the lower part of the left side wall of the inner surface of the outer frame, the outer surface of the fixed rod is slidably connected to a hollow plate, the right end of the hollow plate is fixedly connected to an arc plate, and the end of the fixed rod and the arc plate close to each other is commonly fixedly connected to a spring four, and the spring four is located in the inner cavity of the hollow plate.

[0016] Preferably, the fixing rods on both sides are arranged in an eight-shaped shape, and the upper ends and lower ends of the two arc-shaped plates are arranged in an arc shape.

[0017] Preferably, the cone head assembly includes a cone head rod, which is located between the two arc-shaped plates. A limiting groove is provided on the upper left side of the outer surface of the cone head rod, which passes through the upper right side of the outer surface of the cone head rod. A blocking rod is inserted into the inner surface of the limiting groove. The upper left side wall and the upper right side wall of the inner surface of the cone head rod are fixedly connected to two ejection blocks that are symmetrically distributed up and down, and the two ejection blocks on the same side are respectively located on the upper and lower sides of the limiting groove on the same side.

[0018] Preferably, the four corners of the four ejection blocks are all rounded, the widths of the four ejection blocks and the blocking rod are smaller than the inner diameters of the embedding groove and the first guide groove, and the guide rods on the same side are respectively slidably connected to the inner surfaces of the second guide groove on the same side.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention provides switching between static probing and dynamic probing when testing the bearing capacity of the foundation through the provision of an extrusion component and a pushing component, thereby avoiding the need to use multiple detection devices due to different soil materials when testing the bearing capacity of the foundation, thereby improving the versatility of the device, and during testing, no manual testing operation is required, thereby reducing the labor intensity of personnel.

[0021] 2. The present invention provides a support assembly and a cone head assembly, and the support assembly can provide auxiliary support for the cone head assembly. When the bearing capacity of the foundation is tested, the cone head assembly can cooperate with the pushing assembly. When static penetration testing is required, it is only necessary to remove the components inside the cone head assembly, so that the pushing assembly and the cone head assembly can always remain engaged, thereby continuing to perform static penetration testing. If dynamic penetration testing is required, it is only necessary to keep the components inside the cone head assembly inserted, so that the pushing assembly cannot be engaged with the cone head assembly, thereby achieving the effect of dynamic penetration testing, thereby realizing the device's arbitrary switching between dynamic and static penetration. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0024] Figure 3 This is a schematic diagram of the positions of the guide groove 1, the guide groove 2 and the guide groove 3 of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall structure of the extrusion assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the overall structure of the pushing assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of a half-section structure of the push assembly of the present invention;

[0028] Figure 7 This is a schematic diagram of the overall structure of the support assembly of the present invention;

[0029] Figure 8 It is a schematic diagram of the overall structure of the cone head assembly of the present invention;

[0030] Figure 9 For the present invention Figure 5 A schematic diagram of the structure at center A;

[0031] Figure 10 For the present invention Figure 8 Enlarged schematic diagram of the structure at point B in the middle.

[0032] In the figure: 1. outer frame; 2. hydraulic cylinder; 3. connecting plate; 4. extrusion assembly; 41. support rod; 42. fixing ring; 43. main rod; 44. mounting groove one; 45. spring one; 46. extrusion rod; 5. pushing assembly; 50. mounting groove two; 51. hollow pushing head; 52. round hole one; 53. conical hollow column; 54. spring two; 55. round head rod; 56. guide rod; 57. embedding groove; 581. rectangular groove; 582. extrusion block; 583. spring three; 6. support assembly; 61. fixing rod; 62. hollow plate; 63. arc plate; 64. spring four; 7. cone head assembly; 71. cone head rod; 72. limit groove; 73. ejector block; 74. blocking rod; 11. guide groove one; 12. guide groove two; 13. guide groove three; 14. bottom plate; 15. handle. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] Example 1, as Figure 1 and Figure 2 As shown, a foundation detection device for construction engineering comprises an outer frame 1, a hydraulic cylinder 2 is fixedly connected to the top wall of the outer frame 1, connecting plates 3 are fixedly connected to the left and right sides of the vertical part of the rear end of the outer frame 1, an extrusion assembly 4 is fixedly installed in the middle of the left wall and the middle of the right wall of the inner surface of the outer frame 1, and a pushing assembly 5 is fixedly installed at the output end of the hydraulic cylinder 2 through a piston rod. By providing the extrusion assembly 4 and the pushing assembly 5, when the bearing capacity of the foundation is tested, switching between static probing and dynamic probing can be provided, thereby avoiding the need to use multiple detection devices due to different soil materials when testing the bearing capacity of the foundation, thereby improving the versatility of the device, and no manual detection operation is required during the detection, thereby reducing the labor intensity of the personnel;

[0035] The lower part of the left wall and the lower part of the right wall of the inner surface of the outer frame 1 are fixedly installed with a support assembly 6, and the inner surfaces of the two support assemblies 6 are commonly provided with a cone head assembly 7. Through the provided support assembly 6 and cone head assembly 7, the support assembly 6 can provide auxiliary support to the cone head assembly 7, and when the bearing capacity of the foundation is tested, the cone head assembly 7 can cooperate with the pushing assembly 5. When static probing is required, it is only necessary to remove the components inside the cone head assembly 7, so that the pushing assembly 5 and the cone head assembly 7 can always remain engaged, thereby continuing to perform static probing. If dynamic probing is required, it is only necessary to keep the components inside the cone head assembly 7 always inserted, so that the pushing assembly 5 cannot be engaged with the cone head assembly 7, thereby achieving the effect of dynamic probing detection, thereby realizing the device's arbitrary switching between dynamic and static probing.

[0036] Before using this solution, the two connecting plates 3 fixedly connected to the vertical portion of the rear end of the outer frame 1 need to be installed on the surface of the inner mast of a crawler forklift in the prior art, so that the two connecting plates 3 can be raised and lowered simultaneously with the control of the inner mast, thereby achieving the movement of the entire device following the crawler forklift during use, and when in use, only the inner mast of the crawler forklift needs to be controlled to lower the device and place it on the ground for use;

[0037] The crawler forklift and inner mast mentioned above are conventional designs in the prior art. Their specific usage and connection operation methods are conventional control methods in the prior art, and this solution will not elaborate on them in detail.

[0038] Embodiment 2: Based on embodiment 1, this embodiment aims to support the cone head assembly 7 and place the device on the ground before using the entire device for testing.

[0039] For details, see Figure 1 、 Figure 2 、 Figure 3 and Figure 7 A guide groove 11 is provided on the lower middle side of the left side wall of the inner surface of the outer frame 1 and the lower middle side of the right side wall of the inner surface, which penetrates to the outside of the outer frame 1. Two guide grooves 12 are provided on the lower left side wall of the inner surface of the outer frame 1 and the lower right side wall of the inner surface, which are symmetrically distributed front to back. A guide groove 3 13 is provided on the lower middle side edge of the left side wall of the inner surface of the outer frame 1 and the lower middle side edge of the right side wall of the inner surface, which penetrates the outside of the outer frame 1. The inner surfaces of the two guide grooves 13 are slidably connected to a bottom plate 14, and a handle 15 is fixedly connected to the left end of the bottom plate 14.

[0040] Furthermore, the support assembly 6 includes a fixed rod 61 fixedly connected to the lower part of the left side wall of the inner surface of the outer frame 1, a hollow plate 62 is slidably connected to the outer surface of the fixed rod 61, an arc plate 63 is fixedly connected to the right end of the hollow plate 62, and a spring four 64 is fixedly connected to the end where the fixed rod 61 and the arc plate 63 are close to each other, and the spring four 64 is located in the inner cavity of the hollow plate 62.

[0041] Furthermore, the fixing rods 61 on both sides are arranged in an eight-shaped shape, and the upper and lower ends of the two arc-shaped plates 63 are both arranged in an arc shape.

[0042] Furthermore, the cone head assembly 7 includes a cone head rod 71, which is located between the two arc-shaped plates 63. A limiting groove 72 is provided on the upper left side of the outer surface of the cone head rod 71 and passes through the upper right side of the outer surface of the cone head rod 71. A blocking rod 74 is inserted into the inner surface of the limiting groove 72. Two ejection blocks 73 that are symmetrically distributed up and down are fixedly connected to the upper left side wall and the upper right side wall of the inner surface of the cone head rod 71. The two ejection blocks 73 on the same side are respectively located on the upper and lower sides of the limiting groove 72 on the same side.

[0043] When the device is needed to test the bearing capacity of the foundation, it is only necessary to transport the device to the location where the test is required by operating a crawler forklift, and then the lower end of the outer frame 1 is in contact with the ground. At this time, the bottom plate 14 can be pulled out from the inner cavity of the guide groove 3 13 by holding the handle 15;

[0044] As can be seen from the above, the fixing rods 61 on both sides are arranged in an eight-shaped shape, so the arc plates 63 on both sides are always in contact with the outer surface of the cone head rod 71, and the springs four 64 on both sides always apply an inward extrusion force to the surface of the arc plates 63. Therefore, when the bottom plate 14 is pulled out from the inner surface of the guide groove three 13, the cone head rod 71 will fall vertically downward to the foundation surface without causing left and right deviation. In the subsequent bearing capacity test of the foundation, when the pushing assembly 5 drives the cone head assembly 7 downward for probing detection, the arc plates 63 on both sides will be squeezed by the pushing assembly 5, and then the hollow plate 62 on the same side will be contracted outward, so that the spring four 64 on the same side is squeezed. As can be seen from the above, the upper and lower ends of the two arc plates 63 are both arranged in a circular arc shape. Therefore, when the cone head assembly 7 moves up and down through the arc plates 63 on both sides, the arc plates 63 on both sides can be squeezed outward, thereby not affecting the subsequent normal detection process.

[0045] Embodiment 3: This embodiment is based on embodiment 2 and is for achieving the purpose of switching between dynamic penetration inspection and static penetration inspection.

[0046] For details, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 and Figure 10 The extrusion assembly 4 includes two support rods 41 fixedly connected to the middle of the left side wall of the inner surface of the outer frame 1, the upper ends of the two support rods 41 are fixedly connected to a fixing ring 42, the inner surfaces of the two fixing rings 42 are commonly fixedly connected to a main rod 43, the right end of the main rod 43 is provided with a mounting groove 44, the right side wall of the inner surface of the mounting groove 44 is fixedly connected to a spring 45, the right end of the spring 45 is fixedly connected to an extrusion rod 46, and the extrusion rod 46 is slidably connected to the inner surface of the mounting groove 44.

[0047] Furthermore, the pushing assembly 5 includes a hollow pushing head 51, the upper end of the hollow pushing head 51 is fixedly connected to the output end of the hydraulic cylinder 2 through a piston rod, and a circular hole 52 is provided on the middle left and middle right parts of the outer surface of the hollow pushing head 51, which penetrates the inner surface of the hollow pushing head 51, and a conical hollow column 53 is provided on the inner surface of the hollow pushing head 51. A spring 2 54 is provided on the upper left and upper right parts of the outer surface of the conical hollow column 53, and a round head rod 55 is slidably connected to the inner surfaces of the two springs 2 54. The ends of the round head rod 55 and the spring 2 54 on the same side that are close to each other are both fixedly connected to the mounting groove 2 50, and the lower left and right parts of the outer surface of the conical hollow column 53 are fixedly connected to two guide rods 56 that are symmetrically distributed front and back, and the lower left and right parts of the inner surface of the conical hollow column 53 are provided with an embedding groove 57 that communicates with the inner cavity of the conical hollow column 53.

[0048] Furthermore, a rectangular groove 581 is provided at the lower part of the inner surface of the embedded groove 57 on the same side, which is close to each other. The inner surface of the rectangular groove 581 on the same side is slidably connected with an extrusion block 582. The extrusion block 582 on the same side and the end of the rectangular groove 581 on the same side, which is close to each other, are jointly fixedly connected with two springs 583 that are symmetrically distributed up and down.

[0049] Furthermore, the outer diameter of the round head rod 55 on the same side is smaller than the inner diameter of the circular hole 1 52 on the same side, and the outer diameter of the extrusion rod 46 is smaller than the inner diameter of the circular hole 1 52 .

[0050] Furthermore, the four ejection blocks 73 are all rounded at their four corners, and the widths of the four ejection blocks 73 and the blocking rod 74 are smaller than the inner diameters of the embedding groove 57 and the guide groove 1 11 , and the guide rods 56 on the same side are respectively slidably connected to the inner surfaces of the guide groove 2 12 on the same side.

[0051] When it is necessary to test the bearing capacity of the foundation by means of static penetration testing, it is only necessary to first pull out the blocking rod 74 from the limiting groove 72 and then put the blocking rod 74 aside. Then, by starting the hydraulic cylinder 2, the piston rod at the output end of the hydraulic cylinder 2 drives the hollow pusher head 51 fixedly connected thereto to move downward. At this time, the hollow pusher head 51 and the conical hollow column 53 engage with each other, so that the conical hollow column 53 also moves downward.

[0052] When the conical hollow column 53 moves downward, since the blocking rod 74 has been pulled out of the limiting groove 72, there is no longer any obstruction between the two ejection blocks 73 on the left and right sides of the outer surface of the cone head rod 71;

[0053] When the conical hollow column 53 moves downward, the top wall of the conical hollow column 53 fits with the upper end of the cone head rod 71. In this process, since the widths of the four ejection blocks 73 and the blocking rod 74 are smaller than the inner diameters of the embedding groove 57 and the guide groove 11, the extrusion blocks 582 on the inner surfaces of the embedding grooves 57 on both sides are squeezed by the ejection blocks 73 on the same side and then shrink into the rectangular groove 581. After the top wall of the conical hollow column 53 is completely fitted with the upper end of the cone head rod 71, since the four ejection blocks 73 are all rounded at their four corners, when the extrusion blocks 582 on both sides are exactly located between the gaps between the two ejection blocks 73 on the same side, under the action of the spring 3 583, the two extrusion blocks 582 on the same side are simultaneously engaged into the gaps between the two ejection blocks 73 on the same side.

[0054] At this time, the output end of the hydraulic cylinder 2 continuously drives the conical hollow column 53 and the cone head rod 71 downward through the piston rod, so that the cone head rod 71 gradually inserts into the foundation. When the cone head rod 71 can no longer press downward in the foundation, it is only necessary to start the hydraulic cylinder 2 so that the piston rod at the output end of the hydraulic cylinder 2 drives the hollow pushing head 51 fixed thereto to move upward. Since the conical hollow column 53 is engaged with the outer surface of the cone head rod 71 through the extrusion blocks 582 on both sides, the cone head rod 71 also moves upward. When the cone head rod 71 is pulled out of the foundation, the staff can measure the distance from the highest point of soil adhesion on the outer surface of the cone head rod 71 to the lowest end of the cone head rod 71, and then calculate the bearing capacity of the foundation through a calculation formula;

[0055] When it is necessary to switch to the dynamic penetration test mode to test the bearing capacity of the foundation, the lower end of the cone head rod 71 is first placed back on the ground, and then the blocking rod 74 is reinserted into the limit groove 72. During this process, the extrusion blocks 582 on both sides are squeezed and contracted into the rectangular groove 581. Then, when the hydraulic cylinder 2 is started so that its output end drives the hollow push head 51 fixedly connected thereto to move upward, the conical hollow column 53 will directly break away from the outer surface of the cone head rod 71.

[0056] Then, the output end of the hydraulic cylinder 2 continuously drives the hollow push head 51 and the tapered hollow column 53 to move upwards. When the round-headed rod 55 moves to a position aligned with the extrusion rod 46, the extrusion rod 46 on the same side will simultaneously squeeze the round-headed rod 55 on the same side, causing the round-headed rod 55 to be squeezed and contracted into the second mounting groove 50. The spring 1 45 fixedly connected to the extrusion rod 46 always applies an extrusion force outwards, causing the extrusion rod 46 to enter the round hole 1 52. At this time, the round-headed rods 55 on both sides no longer engage the hollow push head 51 and the tapered hollow column 53.

[0057] Then, the conical hollow column 53 falls downward. During the falling process, the guide rod 56 fixed to the outer surface of the conical hollow column 53 slides into the second guide groove 12 on the same side, thereby ensuring that the conical hollow column 53 always falls vertically downward.

[0058] Then, the top wall of the conical hollow column 53 falls on the upper end of the cone head rod 71, so that the cone head rod 71 is subjected to a downward punching force, causing the lower end of the cone head rod 71 to be smashed into the foundation. During this process, since the blocking rod 74 is always inserted in the limiting groove 72, the extrusion block 582 embedded in the inner cavity of the groove 57 cannot be stuck in the gap between the two ejection blocks 73 on the same side.

[0059] Then, by starting the hydraulic cylinder 2, the hollow pushing head 51 is driven to move downward, the round head rod 55 is squeezed and stuck into the round hole 52 again, and then moved upward to the position of the squeezing rod 46, and reciprocated in sequence, so that the conical hollow column 53 continues to fall and hit the upper end of the cone head rod 71, thereby achieving the effect of dynamic probing detection. Finally, when the cone head rod 71 needs to be pulled out, it is only necessary to pull out the blocking rod 74 from the limit groove 72, and the above operation of lifting the cone head rod 71 can be repeated. Then, by observing the distance between the highest position of the soil adhering to the outer surface of the cone head rod 71 and the lower end of the cone head rod 71, the foundation bearing capacity under dynamic probing detection is obtained through a calculation formula.

[0060] The dynamic penetration test mentioned above is to drive the cone head rod 71 into the soil layer by impacting the conical hollow column 53, and record the number of hammer blows N required for a certain penetration depth, which indirectly reflects the density or strength of the soil;

[0061] Static penetration testing is to statically press the cone head rod 71 into the soil layer through the conical hollow column 53 at a constant rate, and analyze soil strength, compressibility and other parameters by measuring the penetration resistance, end resistance, side friction resistance and pore water pressure of the cone head rod 71.

[0062] It should be noted that the specific installation method of the hydraulic cylinder 2, the circuit connection method and the control method used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0063] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation detection device for construction engineering, comprising an external frame (1), characterized in that: The top wall of the outer frame (1) is fixedly connected to a hydraulic cylinder (2); the left and right sides of the vertical portion of the rear end of the outer frame (1) are fixedly connected to connecting plates (3); the middle of the left side wall and the middle of the right side wall of the inner surface of the outer frame (1) are fixedly installed with an extrusion assembly (4); the output end of the hydraulic cylinder (2) is fixedly installed with a pushing assembly (5) via a piston rod; the lower part of the left side wall and the lower part of the right side wall of the inner surface of the outer frame (1) are fixedly installed with a support assembly (6); and the inner surfaces of the two support assemblies (6) are commonly provided with a cone head assembly (7).

2. A foundation detection device for construction engineering according to claim 1, characterized in that: The lower middle side of the left side wall of the inner surface of the outer frame (1) and the lower middle side of the right side wall of the inner surface are both provided with a guide groove (11) extending to the outer side of the outer frame (1); the lower middle side of the left side wall of the inner surface of the outer frame (1) and the lower middle side of the right side wall of the inner surface are both provided with two guide grooves (12) symmetrically distributed front to back; the lower middle side edge of the left side wall of the inner surface of the outer frame (1) and the lower middle side edge of the right side wall of the inner surface are both provided with a guide groove (13) extending to the outer side of the outer frame (1); the inner surfaces of the two guide grooves (13) are slidably connected to a bottom plate (14); the left end of the bottom plate (14) is fixedly connected to a handle (15).

3. A foundation detection device for construction engineering according to claim 2, characterized in that: The extrusion assembly (4) includes two support rods (41) fixedly connected to the middle of the left side wall of the inner surface of the outer frame (1), the upper ends of the two support rods (41) are fixedly connected to a fixing ring (42), the inner surfaces of the two fixing rings (42) are fixedly connected to a main rod (43), the right end of the main rod (43) is provided with a mounting groove (44), the right side wall of the inner surface of the mounting groove (44) is fixedly connected to a spring (45), the right end of the spring (45) is fixedly connected to an extrusion rod (46), and the extrusion rod (46) is slidably connected to the inner surface of the mounting groove (44).

4. A foundation detection device for construction engineering according to claim 3, characterized in that: The pushing assembly (5) includes a hollow pushing head (51), the upper end of the hollow pushing head (51) is fixedly connected to the output end of the hydraulic cylinder (2) through a piston rod, a circular hole (52) is provided in the middle of the left side and the middle of the right side of the outer surface of the hollow pushing head (51), and the inner surface of the hollow pushing head (51) is provided with a conical hollow column (53), and a spring (54) is provided in the upper left side and the upper right side of the outer surface of the conical hollow column (53). The two springs The inner surfaces of the two springs (54) are both slidably connected with round-headed rods (55), and the ends of the round-headed rods (55) and the springs (54) on the same side that are close to each other are both fixedly connected with mounting grooves (50). The lower left and right parts of the outer surface of the conical hollow column (53) are both fixedly connected with two guide rods (56) that are symmetrically distributed front to back. The lower left and right parts of the inner surface of the conical hollow column (53) are both provided with embedded grooves (57) that communicate with the inner cavity of the conical hollow column (53).

5. A foundation detection device for construction engineering according to claim 4, characterized in that: A rectangular groove (581) is provided at the lower portion of the inner surface of the embedding groove (57) on the same side, which is close to each other. An extrusion block (582) is slidably connected to the inner surface of the rectangular groove (581) on the same side. Two springs (583) symmetrically distributed in an upper and lower direction are fixedly connected to the extrusion block (582) and the end of the rectangular groove (581) on the same side, which is close to each other.

6. A foundation detection device for construction engineering according to claim 4, characterized in that: The outer diameter of the round head rod (55) on the same side is smaller than the inner diameter of the circular hole (52) on the same side, and the outer diameter of the extrusion rod (46) is smaller than the inner diameter of the circular hole (52).

7. The foundation detection device for construction engineering according to claim 1, characterized in that: The support assembly (6) includes a fixed rod (61) fixedly connected to the lower part of the left side wall of the inner surface of the outer frame (1); the outer surface of the fixed rod (61) is slidably connected to a hollow plate (62); the right end of the hollow plate (62) is fixedly connected to an arc plate (63); the end of the fixed rod (61) and the arc plate (63) close to each other is fixedly connected to a spring four (64); the spring four (64) is located in the inner cavity of the hollow plate (62).

8. A foundation detection device for construction engineering according to claim 7, characterized in that: The fixing rods (61) on both sides are arranged in an eight-shaped configuration, and the upper and lower ends of the two arc-shaped plates (63) are both arranged in an arc shape.

9. The foundation detection device for construction engineering according to claim 4, characterized in that: The cone head assembly (7) includes a cone head rod (71), the cone head rod (71) is located between the two arc-shaped plates (63), a limiting groove (72) is provided on the upper left side of the outer surface of the cone head rod (71) and passes through the upper right side of the outer surface of the cone head rod (71), a blocking rod (74) is inserted into the inner surface of the limiting groove (72), and two ejection blocks (73) are fixedly connected to the upper left side wall and the upper right side wall of the inner surface of the cone head rod (71) and are symmetrically distributed up and down, and the two ejection blocks (73) on the same side are respectively located on the upper side and the lower side of the limiting groove (72) on the same side.

10. The foundation detection device for construction engineering according to claim 9, characterized in that: The four corners of the four ejection blocks (73) are all rounded, and the widths of the four ejection blocks (73) and the blocking rod (74) are all smaller than the inner diameters of the embedding groove (57) and the guide groove one (11), and the guide rods (56) on the same side are respectively slidably connected to the inner surface of the guide groove two (12) on the same side.

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