Foundation bearing capacity detection device

Abstract

The utility model discloses a foundation bearing capacity detection device, which relates to the field of constructional engineering and comprises a hollow rod, a hammering block is sleeved on the hollow rod, a hollow shell is slidably connected in the hollow rod, hollow first convex blocks are fixed on two sides of the hollow shell, and first vertical grooves are arranged on two sides of the hollow rod. The first protruding block is slidably matched in the first vertical groove, a hook plate is slidably connected into the first protruding block, the bottom end of the hook plate is located below the first protruding block, a spring is fixed between the hook plate and the inner wall of the hollow shell, a control mechanism used for pushing the hook plate to move horizontally is arranged in the hollow shell, and a locking groove used for being matched with the hook plate is formed in the top of the hammering block. The hammering block is locked by the hook plate after being lifted by a certain height, and the distance between the hook plate and the pressure-bearing table is fixed, so that the distance between the hammering block and the pressure-bearing table after being lifted each time is fixed, the force applied by the hammering block to the pressure-bearing table each time is ensured to be fixed, the detection accuracy is improved, and the detection device is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to a foundation bearing capacity detection device. Background Art

[0002] During the construction process, when the foundation pit is excavated to the elevation, in order to measure the hardness of the base soil and determine whether its bearing capacity meets the requirements, a drilling measurement is often performed at the designated measurement hole using a probe device. Most of the existing drilling equipment is a probe rod equipped with a core hammer. The core hammer strikes the probe rod so that the probe rod is struck vertically into the soil. The condition of the foundation soil is measured by recording the number of hammer strikes and the distance the probe rod falls.

[0003] For example, the patent document with the announcement number CN218580723U discloses a foundation bearing capacity detection device. When in use, the bottom plate is first placed at the designated position to be measured, ensuring that the bottom support plate is in close contact with the ground and is in a horizontal state, and then the hammering part is driven to move upward by pulling the limit rod, and then the hammering part is allowed to fall freely to apply an impact force to the bearing part, so that the drilling part goes deep into the foundation. As the hammering part continuously hammers the pressure-bearing part, the pressure-bearing part will also move downward with the drilling rod. Each time the hammering part is lifted, the distance between the hammering part and the pressure-bearing part needs to be kept consistent, so that the force applied by the hammering part to the pressure-bearing part each time can be kept consistent. However, the existing foundation bearing capacity detection device requires manual lifting of the hammering part and judging the distance between the hammering part and the pressure-bearing part. Manual operation is difficult to ensure the accuracy of the distance between the hammering part and the pressure-bearing part. Although the above patent is provided with a scale line, the scale line must be compared each time the hammering part is lifted, which is not convenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a foundation bearing capacity detection device in order to solve the above-mentioned problem.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A foundation bearing capacity detection device comprises a hollow rod, a pressure platform is fixedly connected to the bottom of the hollow rod, a drilling rod is fixedly connected to the bottom of the pressure platform, a hammer block is sleeved on the hollow rod, a hollow shell is slidably connected to the inside of the hollow rod, first protrusions with hollow interiors are fixed on both sides of the hollow shell, first vertical grooves are provided on both sides of the hollow rod, the first protrusions are slidably fitted in the first vertical grooves, a hook plate is slidably connected to the first protrusions, the bottom end of the hook plate is located below the first protrusion, a spring is fixed between the hook plate and the inner wall of the hollow shell, a control mechanism for pushing the hook plate to translate is arranged in the hollow shell, a locking groove for cooperating with the hook plate is provided on the top of the hammer block, and a supporting mechanism is arranged around the hollow rod.

[0007] Preferably, the control mechanism includes a control rod, which passes through the top wall of the hollow rod, and the bottom end of the control rod extends into the interior of the hollow shell and is fixedly connected to a disc. The control rod is rotatably connected to the hollow shell, and two flanges are fixedly connected to the circumferential outer wall of the disc. A torsion spring is fixed between the top of the disc and the inner wall of the hollow shell, and an extension plate is fixedly connected to one side of the hook plate. In a natural state, the extension plate is in contact with the disc.

[0008] Preferably, two stoppers are fixedly connected to the top of the hollow shell, and a positioning block is fixedly connected to the outer wall of the control rod, and the positioning block is located between the two stoppers.

[0009] Preferably, a second protrusion is fixedly connected to the front side of the hollow shell, a second vertical groove is opened on the front side of the hollow rod, the second protrusion is slidingly fitted in the second vertical groove, the top of the second protrusion is rotatably connected to an adjusting screw, and the adjusting screw is threadedly connected to the hollow rod.

[0010] Preferably, the support mechanism includes a plurality of guide rails equidistantly distributed around a circle, a connecting plate is slidably connected to one side of the guide rail, the connecting plate is fixedly connected to the pressure platform, and a support screw is threadedly connected to the other side of the guide rail.

[0011] Preferably, a limiting strip is fixedly connected to the rear side of the hollow rod, and the hammer block is slidably matched with the hollow rod through the limiting strip.

[0012] The beneficial effects are: after the hammer block is lifted to a certain height, it is locked by the hook plate, and the distance between the hook plate and the pressure platform is fixed. Therefore, the distance between the hammer block and the pressure platform is certain each time it is lifted, thereby ensuring that the force applied by the hammer block to the pressure platform is certain each time, improving the accuracy of detection and making it more convenient to use; by setting an adjusting screw, the distance between the hook plate and the pressure platform can be changed, thereby adjusting the force applied by the hammer part to the pressure platform to adapt to different scenarios and improve practicality.

[0013] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0015] Figure 1 It is a stereoscopic diagram of a foundation bearing capacity detection device described in the utility model;

[0016] Figure 2 It is a cross-sectional view of the internal structure of a hollow rod of a foundation bearing capacity detection device described in the utility model;

[0017] Figure 3The utility model is a foundation bearing capacity detection device Figure 2 A magnified view of the structure at center;

[0018] Figure 4 It is a top sectional view of a hollow shell of a foundation bearing capacity detection device described in the utility model;

[0019] Figure 5 It is a front cross-sectional view of a hollow shell of a foundation bearing capacity detection device described in the utility model;

[0020] Figure 6 It is a front cross-sectional view of a hammer block of a foundation bearing capacity detection device described in the utility model;

[0021] Figure 7 It is a three-dimensional diagram of a support mechanism of a foundation bearing capacity detection device described in the utility model.

[0022] The accompanying drawings are marked as follows: 1. Hollow rod; 101. Pressure platform; 102. Drilling rod; 103. First vertical groove; 104. Second vertical groove; 105. Limit strip; 2. Hollow shell; 201. First protrusion; 202. Second protrusion; 203. Adjusting screw; 3. Hook plate; 301. Spring; 302. Extension plate; 4. Control mechanism; 401. Control rod; 402. Disc; 403. Flange; 404. Torsion spring; 5. Hammer block; 501. Locking groove; 6. Stop block; 7. Positioning block; 8. Support mechanism; 801. Guide rail; 802. Connecting plate; 803. Support screw. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 7As shown, a foundation bearing capacity detection device comprises a hollow rod 1, a pressure platform 101 is fixedly connected to the bottom of the hollow rod 1, a drilling rod 102 is fixedly connected to the bottom of the pressure platform 101, a hammer block 5 is sleeved on the hollow rod 1, the pressure platform 101 is hammered by the free fall of the hammer block 5, so that the drilling rod 102 drills into the foundation downward, a hollow shell 2 is slidably connected inside the hollow rod 1, first convex blocks 201 with hollow interiors are fixed on both sides of the hollow shell 2, first vertical grooves 103 are opened on both sides of the hollow rod 1, the first convex block 201 is slidably fitted in the first vertical grooves 103, a hook plate 3 is slidably connected inside the first convex block 201, the bottom end of the hook plate 3 is a hook shape with an inclined surface, the bottom end of the hook plate 3 is located below the first convex block 201, a spring 301 is fixed between the hook plate 3 and the inner wall of the hollow shell 2, the spring 301 is always in a stretched state, so that the hook plate 3 always has a tendency to move toward the center direction of the hollow rod 1, and the hollow A control mechanism 4 for pushing the hook plate 3 to translate is provided in the shell 2, and a locking groove 501 for cooperating with the hook plate 3 is provided on the top of the hammer block 5, and the locking groove 501 is L-shaped. After the hammer block 5 is lifted, the inclined surface at the bottom end of the hook plate 3 is squeezed to make the two hook plates 3 move away from each other, and then the bottom end of the hook plate 3 enters the locking groove 501, and then the spring 301 pulls the hook plate 3 to reset, so that the lower end of the hook plate 3 is hooked in the locking groove 501, and the height of the hammer block 5 is locked, and then the two hook plates 3 are moved away from each other through the control mechanism 4, and the hook plate 3 releases the restriction on the hammer block 5, so that the hammer block 5 starts to fall freely. Since the distance between the hook plate 3 and the pressure platform 101 remains unchanged, the impact force generated by the hammer block 5 on the pressure platform 101 each time remains unchanged, thereby ensuring the accuracy of the detection, and there is no need to manually actively control the height of the hammer block 5, which is more convenient to use. A supporting mechanism 8 is provided around the hollow rod 1.

[0027] The control mechanism 4 includes a control rod 401, which passes through the top wall of the hollow rod 1. The control rod 401 can rotate and move up and down relative to the hollow rod 1. The bottom end of the control rod 401 extends into the interior of the hollow shell 2 and is fixedly connected to a disc 402. The control rod 401 is rotatably connected to the hollow shell 2. Two flanges 403 are fixedly connected to the circumferential outer wall of the disc 402. A torsion spring 404 is fixed between the top of the disc 402 and the inner wall of the hollow shell 2. An extension plate 302 is fixedly connected to one side of the hook plate 3. In a natural state, the extension plate 302 contacts the disc 402. The disc 402 is rotated by the control rod 401 so that the flange 403 pushes the extension plate 302 open. The two extension plates 302 respectively drive the two hook plates 3 away from each other, so that the hook plate 3 releases the limit on the hammer block 5. After the control rod 401 is released, the torsion spring 404 drives the disc 402 to automatically rotate and reset, so that the flange 403 and the hook plate 3 return to their initial positions.

[0028] Two blocks 6 are fixedly connected to the top of the hollow shell 2, and a positioning block 7 is fixedly connected to the outer wall of the control rod 401. The positioning block 7 is located between the two blocks 6. When the control rod 401 rotates, the positioning block 7 is driven to rotate. The setting of the two blocks 6 makes the positioning block 7 can only rotate 90° at most, that is, the control rod 401 can rotate 90° at most, thereby avoiding excessive rotation of the control rod 401 and facilitating manual operation.

[0029] A second protrusion 202 is fixedly connected to the front side of the hollow shell 2, and a second vertical groove 104 is opened on the front side of the hollow rod 1. The second protrusion 202 is slidably fitted in the second vertical groove 104. An adjusting screw 203 is rotatably connected to the top of the second protrusion 202. The adjusting screw 203 is threadedly connected to the hollow rod 1. When the adjusting screw 203 is rotated, the adjusting screw 203 will drive the second protrusion 202 to move up and down, thereby causing the hollow shell 2 to move up and down, and then causing the control rod 401 and the hook plate 3 to move up and down. In this way, the distance between the hook plate 3 and the pressure platform 101 can be adjusted, thereby controlling the distance between the hammer block 5 and the pressure platform 101. In this way, the impact force generated by the hammer block 5 on the pressure platform 101 can be adjusted to adapt to different usage scenarios.

[0030] The support mechanism 8 includes three guide rails 801 equidistantly distributed around a circle. A connecting plate 802 is slidably connected to one side of the guide rail 801. The connecting plate 802 is fixedly connected to the pressure platform 101, so that the drilling rod 102 can move up and down relative to the guide rail 801. A support screw 803 is threadedly connected to the other side of the guide rail 801.

[0031] The limit strip 105 is fixedly connected to the rear side of the hollow rod 1, and the hammer block 5 is slidably matched with the hollow rod 1 through the limit strip 105. The limit strip 105 is provided to prevent the hammer block 5 from rotating relative to the hollow rod 1, thereby facilitating the docking of the locking groove 501 and the hook plate 3, thereby improving the convenience of use.

[0032] Working principle: When in use, insert the support screw rod 803 into the foundation, rotate the support screw rod 803 to make the support screw rod 803 move up and down relative to the guide rail 801, so as to adjust the support height, adjust the drilling rod 102 to a vertical state through the three support screw rods 803, and then manually lift the hammer block 5. After the hammer block 5 is lifted, the inclined surface at the bottom end of the hook plate 3 is squeezed to make the two hook plates 3 move away from each other, and then the bottom end of the hook plate 3 enters the locking groove 501, and then the spring 301 pulls the hook plate 3 to reset, so that the lower end of the hook plate 3 is hooked in the locking groove 501, and the height of the hammer block 5 is locked, and then the disk 402 is rotated by the control rod 401, so that the flange 403 pushes the extension plate 302 open, and the two extension plates 302 respectively drive the two hook plates 3 to move away from each other, so as to The hook plate 3 releases the limit on the hammer block 5, and the hammer block 5 starts to fall freely and hammers on the pressure platform 101, so that the drilling rod 102 drills into the foundation. The bearing capacity of the foundation is measured by recording the number of hammering and the drop distance of the drilling rod 102. When it is necessary to adjust the impact force generated by the hammer block 5 on the pressure platform 101, the adjusting screw 203 is rotated, and the adjusting screw 203 drives the second protrusion 202 to move up and down, thereby adjusting the distance between the hook plate 3 and the pressure platform 101, and then adjusting the height that the hammer block 5 needs to be lifted. The greater the distance between the hammer block 5 and the pressure platform 101, the greater the impact force generated by the hammer block 5. Conversely, the smaller the distance between the hammer block 5 and the pressure platform 101, the smaller the impact force generated by the hammer block 5. This can adapt to different usage scenarios.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A foundation bearing capacity detection device, comprising a hollow rod (1), a pressure platform (101) being fixedly connected to the bottom of the hollow rod (1), a drilling rod (102) being fixedly connected to the bottom of the pressure platform (101), a hammer block (5) being sleeved on the hollow rod (1), characterized in that: The hollow rod (1) is slidably connected to a hollow shell (2), first convex blocks (201) with hollow interiors are fixed on both sides of the hollow shell (2), first vertical grooves (103) are provided on both sides of the hollow rod (1), the first convex blocks (201) are slidably engaged in the first vertical grooves (103), a hook plate (3) is slidably connected to the first convex blocks (201), the bottom end of the hook plate (3) is located below the first convex blocks (201), a spring (301) is fixed between the hook plate (3) and the inner wall of the hollow shell (2), a control mechanism (4) for pushing the hook plate (3) to translate is provided in the hollow shell (2), a locking groove (501) for engaging with the hook plate (3) is provided on the top of the hammer block (5), and a supporting mechanism (8) is provided around the hollow rod (1).

2. A foundation bearing capacity detection device according to claim 1, characterized in that: The control mechanism (4) comprises a control rod (401), the control rod (401) passes through the top wall of the hollow rod (1), the bottom end of the control rod (401) extends into the interior of the hollow shell (2) and is fixedly connected to a disc (402), the control rod (401) is rotatably connected to the hollow shell (2), two flanges (403) are fixedly connected to the circumferential outer wall of the disc (402), a torsion spring (404) is fixed between the top of the disc (402) and the inner wall of the hollow shell (2), and an extension plate (302) is fixedly connected to one side of the hook plate (3), and in a natural state, the extension plate (302) is in contact with the disc (402).

3. A foundation bearing capacity detection device according to claim 2, characterized in that: Two stoppers (6) are fixedly connected to the top of the hollow shell (2), and a positioning block (7) is fixedly connected to the outer wall of the control rod (401), wherein the positioning block (7) is located between the two stoppers (6).

4. A foundation bearing capacity detection device according to claim 1, characterized in that: A second protrusion (202) is fixedly connected to the front side of the hollow shell (2), a second vertical groove (104) is provided on the front side of the hollow rod (1), the second protrusion (202) is slidably fitted in the second vertical groove (104), an adjusting screw rod (203) is rotatably connected to the top of the second protrusion (202), and the adjusting screw rod (203) is threadedly connected to the hollow rod (1).

5. A foundation bearing capacity detection device according to claim 1, characterized in that: The support mechanism (8) comprises a plurality of guide rails (801) equidistantly distributed around a circle, one side of the guide rail (801) being slidably connected to a connecting plate (802), the connecting plate (802) being fixedly connected to the pressure platform (101), and the other side of the guide rail (801) being threadedly connected to a supporting screw rod (803).

6. A foundation bearing capacity detection device according to claim 1, characterized in that: The rear side of the hollow rod (1) is fixedly connected to a limiting strip (105), and the hammer block (5) is slidably engaged with the hollow rod (1) via the limiting strip (105).

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