Engineering foundation dynamic compaction construction device and method

Abstract

The application relates to the technical field of engineering foundation, in particular to an engineering foundation dynamic compaction construction device. The device comprises a hoist and a hoisting rope arranged on the hoist; a weight mechanism comprising an upper iron plate arranged at the end of the hoisting rope, a hanging block arranged on the outer wall of the upper iron plate and a hanging rod arranged on the outer wall of the hanging block; a connecting mechanism comprising a rotating ring arranged on the outer part of the upper iron plate, a connecting block arranged on the end surface of the upper iron plate and a slot arranged in the inner part of the connecting block; and a limiting mechanism comprising an insertion strip arranged on the outer wall of the upper iron plate. The weight mechanism can be hoisted by the hoist and the hoisting rope, the end of the hoisting rope is controlled to be unhooked by an unhooker, the weight mechanism is allowed to complete free fall motion, and the engineering foundation dynamic compaction construction is completed.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, specifically to a device and method for dynamic compaction of engineering foundations. Background Technology

[0002] Dynamic compaction, also known as dynamic consolidation, is a foundation treatment technology that improves the bearing capacity and compression modulus of foundation soil by applying huge impact energy to the foundation soil. This technology mainly uses lifting equipment to raise a heavy hammer to a certain height and then let it fall freely. The huge impact force can compress the voids in the soil layer. Its applicable range includes foundations of gravelly soil, sandy soil, low-saturation silty and cohesive soil, collapsible loess and miscellaneous fill soil, etc. It is especially widely used in the foundation reinforcement of large-scale projects such as highways, railways, airports, and nuclear power plants.

[0003] Typically, a hammer is a heavy iron block. However, since the weight of the hammer is fixed, if a heavier hammer is needed, the hammer can only be replaced directly, and the weight cannot be increased by stacking. Furthermore, extra-heavy hammers are more troublesome to transport and require larger transport vehicles, thus increasing costs. Summary of the Invention

[0004] In view of the problems of inconvenient assembly and increased weight in the above or existing technologies, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a dynamic compaction construction device for engineering foundations, comprising,

[0006] The crane and the lifting ropes mounted on the crane; and,

[0007] The counterweight mechanism includes an upper iron plate disposed at the end of the lifting rope, a hanging block disposed on the outer wall of the upper iron plate, and a hanging rod disposed on the outer wall of the hanging block; and,

[0008] The connecting mechanism includes a rotating ring disposed outside the upper iron plate, a connecting block disposed on the end face of the upper iron plate, and a slot formed inside the connecting block; and,

[0009] The limiting mechanism includes an insert strip disposed on the outer wall of the upper iron plate; wherein,

[0010] The lifting machine facilitates the raising of the counterweight mechanism. By controlling the connection and release of the lifting rope and the counterweight mechanism, the counterweight mechanism can be used to perform dynamic compaction on the engineering foundation. The added connecting mechanism can adjust the weight, and the limit mechanism adds a limiting function.

[0011] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, wherein: a weight is provided on the end face of the upper iron plate, and a lower iron plate is provided on the end face of the weight.

[0012] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, the end face of the rotating ring is provided with a slider, the end face of the upper iron plate is provided with a groove, and the slider provided on the end face of the rotating ring is placed in the groove provided on the end face of the upper iron plate.

[0013] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, wherein: the inner wall of the rotating ring is provided with an insert block, the end face of the lower iron plate is provided with a multi-functional hole, and the outer wall of the rotating ring is provided with a vent hole.

[0014] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, the insert block, the multi-functional hole, the connecting block, and the vent hole are all five in number and arranged in a circular equidistant array along the vertical line of the rotating ring.

[0015] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, wherein: the outer wall of the insert is slidably connected to the inside of the rotating ring, and the outside of the insert is slidably connected to the inside of the weight block.

[0016] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, wherein: a sliding strip is sleeved inside the insert, a limiting block is sleeved inside the insert, a second fixing rod is provided at the end of the limiting block, a movable plate is sleeved outside the second fixing rod, a first fixing rod is sleeved at the other end of the movable plate, a connecting plate is provided at the end of the first fixing rod, a first tension spring is provided on the end face of the connecting plate, and the other end of the first tension spring is connected to the inside of the insert.

[0017] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, the outer wall of the connecting plate is provided with a slider, the inner wall of the insert is provided with a groove, and the slider provided on the outer wall of the connecting plate is placed in the groove opened inside the insert.

[0018] As a preferred embodiment of the foundation dynamic compaction construction device of the present invention, wherein: a fixing block is provided on the inner wall of the insert strip, the outer wall of the fixing block is sleeved with the inner wall of the sliding strip, and a second tension spring is provided between the outer wall of the fixing block and the inner wall of the sliding strip.

[0019] To better achieve the objectives of this invention, this invention also provides a method for dynamic compaction construction of engineering foundations, comprising the following steps:

[0020] Step 1: First, clean the foundation and level the construction site to ensure that the ground is flat and has been compacted in the early stage. Then, determine the drawings, mark the locations that need to be compacted with lime, and measure the initial height of the site. Then, move the crane to the area that needs to be compacted.

[0021] Step 2: By fixing a release device to the end of the lifting rope on the crane, and suspending a counterweight mechanism at the end of the release device, the counterweight mechanism is moved above the marked position that needs to be compacted, while controlling the retraction of the lifting rope to raise the counterweight mechanism to the previously calculated height.

[0022] Step 3: The operator triggers the release device via remote control or by pulling a rope, allowing the hammer mechanism to fall freely. After the hammer mechanism falls and impacts the foundation, the elevation of the pit bottom is measured, the single compaction amount is calculated, and parameters such as the number of impacts and energy are recorded.

[0023] Step 4: By repeating Step 2 and Step 3 until the number of tamping blows or control standards specified in the design are reached, and by coordinating with the set connecting and limiting mechanisms, the counterweight of the hammer mechanism is continuously increased in the next dynamic tamping process, so that the weight is gradually increased during tamping, which makes it easier to achieve a better tamping effect.

[0024] Step 5: After completing the first round of compaction, use a bulldozer to fill the compaction pits, and after a period of time, carry out the second compaction. Finally, use low-energy full compaction to compact the loose surface soil.

[0025] Step Six: After the foundation is compacted, a quality test is conducted. Construction can only proceed if the test is passed. If the test fails, the foundation is compacted again.

[0026] The beneficial effects of this invention are as follows: the lifting machine and lifting rope facilitate the lifting of the hammer mechanism; by controlling the release device at the end of the lifting rope to open, the hammer mechanism can easily complete free fall motion, thereby completing the dynamic compaction construction of the engineering foundation; and by adding the cooperation of the connecting mechanism and the limiting mechanism, multiple hammer mechanisms can be connected, thus facilitating the increase of weight during dynamic compaction and increasing the dynamic compaction effect. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural schematic diagram of the equipment and method for dynamic compaction of the engineering foundation.

[0029] Figure 2 A schematic diagram of the heavy hammer mechanism in the construction device and method for dynamic compaction of engineering foundation.

[0030] Figure 3 A bottom view schematic diagram of the heavy hammer mechanism for dynamic compaction construction equipment and methods for engineering foundations.

[0031] Figure 4 A cross-sectional structural diagram of the equipment and method for dynamic compaction of the engineering foundation.

[0032] Figure 5 A schematic diagram of the internal structure of the heavy hammer mechanism in the construction device and method for dynamic compaction of engineering foundation.

[0033] Figure 6 A schematic diagram of the limiting mechanism structure for the construction device and method of dynamic compaction of engineering foundation.

[0034] Figure 7 A schematic diagram of the limiting mechanism of the device and method for dynamic compaction of engineering foundation.

[0035] Figure 8 A schematic diagram of the internal structure of the sliding strip in the construction device and method for dynamic compaction of engineering foundation.

[0036] In the diagram: 11. Crane; 12. Lifting rope; 2. Counterweight mechanism; 21. Upper iron plate; 22. Lower iron plate; 23. Weight; 24. Hanging block; 25. Hanging rod; 3. Connecting mechanism; 31. Rotating ring; 32. Insert block; 33. Multifunctional hole; 34. Connecting block; 341. Slot; 35. Vent hole; 4. Limiting mechanism; 41. Insert strip; 42. Sliding strip; 43. Limiting block; 44. Movable plate; 45. Connecting plate; 46. First tension spring; 47. First fixing rod; 48. Second fixing rod; 49. Fixing block; 410. Second tension spring. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0040] Example 1, referring to Figures 1 to 8 This is the first embodiment of the present invention, which provides a dynamic compaction construction device for engineering foundations, capable of achieving a compaction effect on engineering foundations, including,

[0041] The crane 11 and the lifting rope 12 mounted on the crane 11; and,

[0042] The counterweight mechanism 2 includes an upper iron plate 21 disposed at the end of the lifting rope 12, a hanging block 24 disposed on the outer wall of the upper iron plate 21, and a hanging rod 25 disposed on the outer wall of the hanging block 24; and,

[0043] The connecting mechanism 3 includes a rotating ring 31 disposed outside the upper iron plate 21, a connecting block 34 disposed on the end face of the upper iron plate 21, and a slot 341 formed inside the connecting block 34; and,

[0044] The limiting mechanism 4 includes an insert 41 disposed on the outer wall of the upper iron plate 21; wherein,

[0045] The lifting machine 11 facilitates the lifting height of the hammer mechanism 2. By controlling the connection and release between the lifting rope 12 and the hammer mechanism 2, the hammer mechanism 2 can perform dynamic compaction on the engineering foundation. The added connecting mechanism 3 can adjust the weight, and the limiting mechanism 4 adds a limiting function.

[0046] In summary, during use, the first step is to clean the foundation and level the construction site to ensure the ground is flat and has been compacted beforehand. Then, the drawings are finalized, and the areas requiring compaction are marked with lime or similar materials. The initial height of the site is measured. The crane 11 is then moved to the area requiring compaction. A release device is fixed to the end of the lifting rope 12 on the crane 11, and a counterweight mechanism 2 is suspended from the end of the release device. By moving the counterweight mechanism 2 above the marked compaction location and simultaneously controlling the retraction of the lifting rope 12, the counterweight mechanism 2 is raised to the previously calculated height. The operator triggers the release device remotely or by pulling the rope, allowing the counterweight mechanism 2 to fall freely. The falling counterweight mechanism 2 impacts... After the foundation is laid, the elevation of the pit bottom is measured, the single compaction settlement is calculated, and parameters such as the number of compactions and energy are recorded. By repeating steps two and three, the number of compactions or control standards specified in the design are reached. In conjunction with the set connecting mechanism 3 and limiting mechanism 4, the counterweight of the heavy hammer mechanism 2 is continuously increased during the next dynamic compaction process, so that the weight is gradually increased during compaction to achieve a better compaction effect. After completing all compaction points in the first pass, the compaction pit is filled with a bulldozer. After a period of time, the foundation is compacted for the second time. Finally, the surface loose soil is compacted with low-energy full compaction. The quality of the foundation is tested after dynamic compaction. Construction can only proceed if the test is qualified. If the test is unqualified, the foundation dynamic compaction is carried out again.

[0047] Example 2, refer to Figures 1-4This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides structural optimization of the counterweight mechanism, which solves the compaction problem. The end face of the upper iron plate 21 is provided with a weight block 23, and the end face of the weight block 23 is provided with a lower iron plate 22.

[0048] Specifically, the end face of the rotating ring 31 is provided with a slider, and the end face of the upper iron plate 21 is provided with a groove. The slider on the end face of the rotating ring 31 is placed in the groove on the end face of the upper iron plate 21.

[0049] In summary, during use, the set hammer mechanism 2 has a hanging block 24 fixedly connected to the upper end face of the upper iron plate 21 in the hammer mechanism 2, and two hanging rods 25 are fixedly connected to the outer wall of the hanging block 24. This facilitates the connection of the unhooking device connected to the end of the lifting rope 12 to the hanging rods 25, thereby enabling the hammer mechanism 2 to be lifted. A weight block 23 is fixedly connected to the lower surface of the upper iron plate 21, and a lower iron plate 22 is fixedly connected to the lower end face of the weight block 23, thus forming a hammer. By allowing the hammer mechanism 2 to complete the free fall action, it is convenient to perform dynamic compaction on the engineering foundation.

[0050] Example 3, referring to Figures 1-5 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides structural optimization of the connecting mechanism, which solves the problem of increasing the counterweight. The inner wall of the rotating ring 31 is provided with an insert block 32, the end face of the lower iron plate 22 is provided with a multi-functional hole 33, and the outer wall of the rotating ring 31 is provided with a vent hole 35.

[0051] Specifically, there are five inserts 32, five multi-functional holes 33, five connecting blocks 34, and five vent holes 35, arranged in an equidistant ring array along the vertical line of the rotating ring 31.

[0052] Specifically, the outer wall of the insert 41 is slidably connected to the inside of the rotating ring 31, and the outside of the insert 41 is slidably connected to the inside of the weight 23.

[0053] In summary, during use, a slider is fixedly connected to the upper surface of the rotating ring 31 via the connecting mechanism 3. This slider is placed within a groove on the lower surface of the upper iron plate 21, facilitating the limiting and rotation of the rotating ring 31. The rotation range of the rotating ring 31 allows for the stacking of two hammer mechanisms 2 together when increased weight is applied during the compaction process. The multi-functional hole 33 on the lower iron plate 22 of the upper hammer mechanism 2 is aligned with the connecting block 34, allowing the connecting block 34 to enter the interior of the lower iron plate 22 and the upper iron plate 21. Rotating the rotating ring 31 drives the rotation of the insert block 32. This facilitates the insertion of the insert 32 into the slot 341 in the lower connecting block 34 during rotation, thus connecting the two hammer mechanisms 2. This allows for the connection of multiple hammer mechanisms 2 through sequential operation. Since the upper iron plate 21 of the hammer mechanism 2 is fixedly connected to the hanging block 24 and the hanging rod 25, and a slot is provided below the lower iron plate 22 for easy placement, it is easy to connect the two hammer mechanisms 2. The multi-functional hole 33 at the bottom facilitates the release of gas when the hammer mechanism 2 falls onto the foundation. In conjunction with the vent hole 35 on the outer wall of the rotating ring 31, the gas can be released. The lower part of the vent hole 35 is flush with the upper surface of the lower iron plate 22, making it easy to wash and clean the soil that has entered the lower iron plate 22.

[0054] Example 4, refer to Figures 1 to 8 This is the fourth embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an optimized structure for the limiting mechanism, which solves the problem of preventing detachment. A sliding strip 42 is sleeved inside the insert 41, and a limiting block 43 is sleeved inside the insert 41. A second fixing rod 48 is provided at the end of the limiting block 43. A movable plate 44 is sleeved outside the second fixing rod 48. A first fixing rod 47 is sleeved at the other end of the movable plate 44. A connecting plate 45 is provided at the end of the first fixing rod 47. A first tension spring 46 is provided on the end face of the connecting plate 45. The other end of the first tension spring 46 is connected to the inside of the insert 41.

[0055] Specifically, the outer wall of the connecting plate 45 is provided with a slider, and the inner wall of the insert 41 is provided with a groove. The slider provided on the outer wall of the connecting plate 45 is placed in the groove provided inside the insert 41.

[0056] Furthermore, a fixing block 49 is provided on the inner wall of the insert 41, the outer wall of the fixing block 49 is sleeved with the inner wall of the sliding strip 42, and a second tension spring 410 is provided between the outer wall of the fixing block 49 and the inner wall of the sliding strip 42.

[0057] In summary, during use, the limiting mechanism 4 allows the insert 41 within it to be inserted into the side of the rotating ring 31, facilitating its rotation. Simultaneously, the insert 41 can be inserted into the weight 23. When the sliding bar 42 needs to be pulled, it slides within the insert 41, moving away from the connecting plate 45. The connecting plate 45 has sliders on both sides, which slide within the insert 41. This movement is controlled by the first tension spring. 46 will push the connecting plate 45 under tension. The first fixing rod 47 is fixedly connected inside the connecting plate 45, and the movable plate 44 is movably sleeved on the outside of the first fixing rod 47. The second fixing rod 48 is movably sleeved inside the movable plate 44. The second fixing rod 48 is fixedly connected to the inside of the end of the limiting block 43, so that the movable plate 44 can pull the limiting block 43. The limiting block 43 can enter the interior of the insert 41, and thus it is convenient to insert the insert 41 into the interior of the weight block 23.

[0058] After the insert 41 is inserted into the weight 23, the sliding bar 42 is released and the insert 41 is pushed. Since the fixing block 49 is fixed to the inner wall of the insert 41 and the second tension spring 410 is fixedly connected to the fixing block 49, the second tension spring 410 will push the sliding bar 42, thereby completing the sliding bar 42 to push the connecting plate 45. Therefore, it is easy to pass the limiting block 43 through the insert 41 and insert it into the weight 23. This makes it easy for the limiting block 43 to be limited by the weight 23, thereby avoiding the rotation of the rotating ring 31. At the same time, it avoids the risk of the outer wall of the insert 32 disengaging from the slot 341 opened in the connecting block 34 in the lower counterweight mechanism 2, thus increasing safety.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A dynamic compaction construction device for engineering foundations, characterized in that: include, The crane (11) and the lifting rope (12) mounted on the crane (11); and, The counterweight mechanism (2) includes an upper iron plate (21) disposed at the end of the lifting rope (12), a hanging block (24) disposed on the outer wall of the upper iron plate (21), and a hanging rod (25) disposed on the outer wall of the hanging block (24); and, The connecting mechanism (3) includes a rotating ring (31) disposed outside the upper iron plate (21), a connecting block (34) disposed on the end face of the upper iron plate (21), and a slot (341) formed inside the connecting block (34); and, The limiting mechanism (4) includes an insert (41) disposed on the outer wall of the upper iron plate (21). The upper iron plate (21) has a weight (23) on its end face, and the weight (23) has a lower iron plate (22) on its end face. The end face of the rotating ring (31) is provided with a slider, and the end face of the upper iron plate (21) is provided with a groove. The slider provided on the end face of the rotating ring (31) is placed in the groove provided on the end face of the upper iron plate (21). The inner wall of the rotating ring (31) is provided with an insert (32), the end face of the lower iron plate (22) is provided with a multi-functional hole (33), and the outer wall of the rotating ring (31) is provided with a vent hole (35); wherein, The lifting machine (11) makes it easy to lift the hammer mechanism (2). By controlling the connection and release between the lifting rope (12) and the hammer mechanism (2), the hammer mechanism (2) can perform strong compaction on the foundation of the project. The weight can be adjusted with the added connecting mechanism (3), and the limiting mechanism (4) adds the limiting function. During the dynamic compaction process, the weight can be increased so that the two hammer mechanisms (2) can be stacked together. By aligning the multi-functional hole (33) provided below the lower iron plate (22) of the upper hammer mechanism (2) with the lower connecting block (34), the lower connecting block (34) can be inserted into the interior of the lower iron plate (22) and the upper iron plate (21). By rotating the rotating ring (31), the rotation of the rotating ring (31) can drive the rotation of the insert (32), so that the insert (32) can be inserted into the slot (341) opened in the lower connecting block (34) during the rotation. Therefore, the two hammer mechanisms (2) can be connected.

2. The engineering foundation dynamic compaction construction device as described in claim 1, characterized in that: The insert (32), multi-functional hole (33), connecting block (34), and vent hole (35) are all five in number and are arranged in an equidistant array along the vertical line of the rotating ring (31).

3. The engineering foundation dynamic compaction construction device as described in claim 2, characterized in that: The outer wall of the insert (41) is slidably connected to the inside of the rotating ring (31), and the outside of the insert (41) is slidably connected to the inside of the weight (23).

4. The engineering foundation dynamic compaction construction device as described in claim 3, characterized in that: The insert (41) is fitted with a sliding strip (42) inside, and a limiting block (43) is fitted inside the insert (41). A second fixing rod (48) is provided at the end of the limiting block (43). A movable plate (44) is fitted outside the second fixing rod (48). A first fixing rod (47) is fitted at the other end of the movable plate (44). A connecting plate (45) is provided at the end of the first fixing rod (47). A first tension spring (46) is provided on the end face of the connecting plate (45). The other end of the first tension spring (46) is connected to the inside of the insert (41).

5. The engineering foundation dynamic compaction construction device as described in claim 4, characterized in that: The outer wall of the connecting plate (45) is provided with a slider, and the inner wall of the insert (41) is provided with a groove. The slider provided on the outer wall of the connecting plate (45) is placed in the groove opened inside the insert (41).

6. The engineering foundation dynamic compaction construction device as described in claim 5, characterized in that: The inner wall of the insert (41) is provided with a fixing block (49), the outer wall of the fixing block (49) is sleeved with the inside of the sliding strip (42), and a second tension spring (410) is provided between the outer wall of the fixing block (49) and the inner wall of the sliding strip (42).

7. A method for dynamic compaction of engineering foundation, characterized in that: Includes the engineering foundation dynamic compaction construction device as described in any one of claims 1 to 6, and the following steps: Step 1: First, clean the foundation and level the construction site to ensure that the ground is flat and has been compacted in the early stage. Then, determine the drawings, mark the location that needs to be compacted with lime, and measure the initial height of the site. Then, move the crane (11) to the area that needs to be compacted. Step 2: By fixing a release device to the end of the lifting rope (12) on the crane (11), and suspending a weight mechanism (2) at the end of the release device, the weight mechanism (2) is raised to the previously calculated height by moving the weight mechanism (2) above the marked position that needs to be compacted and controlling the retraction of the lifting rope (12). Step 3: The operator triggers the unhooking device by remote control or by pulling a rope, so that the hammer mechanism (2) falls freely. After the hammer mechanism (2) falls and impacts the foundation, the bottom elevation of the pit is measured, the single tamping amount is calculated, and the number of tamping blows and energy parameters are recorded. Step 4: By repeating Step 2 and Step 3 until the number of tamping blows or control standards specified in the design are reached, and by cooperating with the set connecting mechanism (3) and limiting mechanism (4), the counterweight of the heavy hammer mechanism (2) is continuously increased in the next strong tamping process, so that the weight is gradually increased during tamping, which is conducive to achieving a better tamping effect. Step 5: After completing the first round of compaction, use a bulldozer to fill the compaction pits, and after a period of time, carry out the second compaction. Finally, use low-energy full compaction to compact the loose surface soil. Step Six: After the foundation is compacted, a quality test is conducted. Construction can only proceed if the test is passed. If the test fails, the foundation is compacted again.

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