Self-stabilizing SDDC dynamic compactor

Abstract

The invention relates to the technical field of SDDC dynamic compactors, in particular to a self-stabilizing SDDC dynamic compactor which comprises a crawler-type moving vehicle provided with a lifting mechanical arm, a side wing anti-sinking part comprising side supporting arms rotationally installed on the two sides of the crawler-type moving vehicle respectively, and a side wing anti-sinking part arranged on the side supporting arms and used for lifting a rammer at the front end of the lifting mechanical arm through a lifting lock chain. The sledge-shaped plate is detachably mounted at the front end of the side supporting arm, and a plurality of anti-settling units are mounted at the bottom of the sledge-shaped plate; the positioning assembly is rotationally mounted at the front end of the lifting mechanical arm and comprises an electromagnetic suction plate of which the bottom is provided with at least two positioning pins; a positioning hole corresponding to the positioning pin is formed in the rammer; according to the self-stabilizing SDDC dynamic compactor, the sinking and settlement prevention function can be improved through the arranged side wing settlement prevention parts, downward settlement tendency force can be converted into supporting force for supporting equipment upwards through cooperation of the skid-mounted plate and the settlement prevention units, settlement can be effectively prevented, and the arrangement of an extra-heavy rammer for strengthening the tamping effect is facilitated.

Description

Technical Field

[0001] This invention relates to the field of SDDC dynamic compaction machine technology, and specifically to a self-stabilizing SDDC dynamic compaction machine. Background Technology

[0002] With the expansion of coal mining in my country, open-pit coal mine spoil heaps have formed ultra-thick fill strata with a thickness of tens to hundreds of meters. These strata are crudely filled, have uneven internal structures, and contain mixed components such as gravel, silty clay, and coal gangue. The soil is loose, has poor self-stability, and low bearing capacity. They are special foundations with poor engineering geological properties and require treatment with SDDC piles to improve foundation performance.

[0003] SDDC piles are a foundation treatment technology that involves first drilling holes in the foundation, then placing a heavy hammer into the hole, and simultaneously adding material or layering fill material for subsequent treatment, ultimately forming a high-bearing-capacity, dense pile body and strongly compacted soil between the piles. However, existing dynamic compaction equipment used for SDDC pile construction faces significant technical bottlenecks in open-pit coal mine spoil heaps: First, insufficient energy transfer during compaction. Existing equipment is mostly equipped with hammers of ≤30 tons, resulting in limited single-shot impact energy. In ultra-deep pile holes, energy is significantly attenuated after air transfer and hole wall friction, making it difficult to adequately reinforce the deep soil. Second, poor equipment stability. Spoil heap foundations have low bearing capacity, and traditional equipment has a high ground pressure, making it prone to subsidence and settlement under the impact reaction force. This not only exacerbates compaction positioning deviations and energy losses but may also lead to safety accidents. Third, insufficient compaction accuracy. Most equipment suspends the hammer via steel wire ropes, which can cause violent swinging and rotation before impact, affecting compaction accuracy and easily inducing collapse due to friction with the hole wall.

[0004] In summary, existing technologies lack dynamic compaction equipment that is suitable for ultra-thick fill strata in open-pit coal mine spoil heaps, can stand stably on soft foundations to prevent settlement, and can accurately transmit compaction energy to the bottom of pile holes; therefore, a self-stabilizing SDDC dynamic compaction machine is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section and provide a self-stabilizing SDDC dynamic compaction machine.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A self-stabilizing SDDC dynamic compaction machine includes a tracked mobile vehicle equipped with a lifting robotic arm, wherein a tamping hammer is suspended at the front end of the lifting robotic arm via a lifting chain, and further includes: The side anti-sinking part includes side support arms that are rotatably installed on both sides of the tracked mobile vehicle, and a skid plate that is detachably installed at the front end of the side support arms for attaching to the ground foundation. Multiple anti-sinking units are installed at the bottom of the skid plate. The positioning component is rotatably mounted at the front end of the lifting robotic arm, including an electromagnetic suction plate with at least two positioning pins mounted on the bottom; The hammer is provided with a positioning hole corresponding to the positioning pin; When the lifting chain hoists the ram, the electromagnetic suction plate positions and holds the ram in place.

[0007] Preferably, the anti-settlement unit includes a tube with an open end, and two symmetrically arranged side-flip covers are rotatably mounted on the tube; The side-flip cover includes a fixedly connected, L-shaped pressure cover, a rotating shaft, and a stop plate.

[0008] Preferably, the side-flip cover is rotatably mounted at the lower end of the insert via the rotating shaft; The pressure cap is located on both sides of the outside of the insert, and the abutment is located at the opening of the insert; When the anti-settlement unit is pressed down into the ground foundation, the soil presses the abutment plate upward and causes the pressure covers on both sides to rotate towards the ground foundation side.

[0009] Preferably, the pressure cover has a cover cavity on the side near the ground foundation, and the cover cavity is used to prevent downward settlement.

[0010] Preferably, the skid plate has upwardly bent flanges on at least two sides, and bolts for detachable installation on the front end of the side support arm are fixedly connected to the skid plate.

[0011] Preferably, a rubber bladder is installed at the bottom of the flange, which is used to suppress settlement by increasing the contact area due to pressure before settlement.

[0012] Preferably, the electromagnetic suction plate has a hollow lifting hole at its axis for centrally suspending the lifting chain.

[0013] Preferably, a lug is fixedly connected above the electromagnetic chuck, and the lug is rotatably installed at the front end of the lifting robotic arm and is used to keep the electromagnetic chuck horizontal under the action of gravity.

[0014] Preferably, the bottom of the electromagnetic suction plate is provided with multiple mounting slots, and springs are detachably installed in the mounting slots; The locating pin is located at the center of the spring.

[0015] Preferably, the outer end of the positioning hole has a trumpet-shaped structure with a diameter that gradually increases from the inside to the outside.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The self-stabilizing SDDC dynamic compaction machine can improve the anti-sinking and settlement function through the side anti-sinking part. Through the skid plate and the anti-sinking unit, the downward settlement tendency force can be converted into the upward support force of the equipment, which can effectively prevent settlement and is conducive to the configuration of ultra-heavy hammer to enhance the compaction effect. 2. The positioning component is equipped with a magnetic positioning function for the hammer, which keeps the hammer in the same position after it is lifted, ensuring that the accuracy and the falling path do not deviate, thus helping to maintain the quality of the tamping. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a side view of the overall structure of the present invention; Figure 2 This is one of the overall structural schematic diagrams of the present invention; Figure 3 This is the second schematic diagram of the overall structure of the present invention; Figure 4 This is a side view showing the installation relationship of the skid plate, rubber bladder, and anti-settlement unit of the present invention. Figure 5 This is one of the schematic diagrams of the anti-settlement unit of the present invention; Figure 6 This is one of the exploded views of the anti-settlement unit of the present invention; Figure 7 This is the second schematic diagram of the anti-settlement unit of the present invention; Figure 8 This is the second exploded view of the anti-settlement unit of the present invention; Figure 9 This is a schematic cross-sectional view of the anti-settlement unit of the present invention; Figure 10 This is a schematic diagram of the positioning component of the present invention; Figure 11 This is an exploded cross-sectional view of the positioning component of the present invention; Figure 12 This is a schematic diagram of the hammer of the present invention.

[0018] The meanings of the labels in the diagram are as follows: 1. Tracked mobile vehicle; 2. Lifting robotic arm; 3. Side support arm; 4. Anti-settlement unit; 41. Insert tube; 42. Side flip cover; 421. Pressure cover; 422. Rotating shaft; 423. Support plate; 401. Cover cavity; 5. Skid plate; 51. Flip edge plate; 52. Bolt; 6. Positioning assembly; 61. Electromagnetic suction plate; 601. Hollow lifting hole; 602. Embedding groove; 62. Lug; 63. Spring; 64. Positioning pin; 7. Lifting chain; 8. Hammer; 801. Positioning hole; 9. Rubber bladder. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-12 The present invention will describe the above technical solution in detail through the following embodiments: This embodiment of the self-stabilizing SDDC dynamic compaction machine includes a tracked mobile vehicle 1 equipped with a lifting robotic arm 2. The front end of the lifting robotic arm 2 is equipped with a tamping hammer 8 via a lifting chain 7. The tracked mobile vehicle 1 has better anti-settlement capabilities than wheeled vehicles. This part is an application of existing technology, so it will not be explained in detail.

[0021] Specifically, such as Figures 1-4 The structure shown is designed to improve the anti-settlement function. Taking the ultra-thick fill layer formed by the spoil heap of an open coal mine as an example, the existing equipment is mostly equipped with a ≤30-ton tamping hammer, which has limited single-click tamping energy. In order to obtain stronger tamping kinetic energy, this embodiment considers configuring a 40-60 ton ultra-heavy tamping hammer. The tamping hammer 8 is heavy and the foundation of the application scenario is special. Therefore, it is designed with a side anti-settlement part, including four side support arms 3 that are respectively rotated and installed on both sides of the tracked mobile vehicle 1. The side support arms 3 realize the downward flipping and pressing action through hydraulic cylinders. In the mobile vehicle, it can be lifted.

[0022] In this embodiment, a skid plate 5 is detachably installed at the front end of the side support arm 3. The downward pressure of the side support arm 3 causes the anti-settlement unit 4 installed at the bottom of the skid plate 5 to compress the foundation soil. For ease of assembly and disassembly, four bolts 52 are installed on the skid plate 5. To further suppress the sinking and settlement of the skid plate 5, the skid plate 5 is provided with... Figure 4The upward-bending flange 51 shown has a rubber bladder 9 installed at its bottom. If sinking and settling occurs during the compaction process, the skid plate 5, in conjunction with the rubber bladder 9, can compress the rubber bladder 9 to further increase the contact area before settling, thereby suppressing the settling.

[0023] Specifically, such as Figures 5-9 As shown in the structure, to enhance the anti-settlement function, the anti-settlement unit 4 includes an insert 41 with an open lower end, which is pressed into the soil by the skid plate 5. Under the mechanical pressure of the side support arm 3, the soil will enter the cavity of the insert 41. Simultaneously, as... Figure 9 As shown, two symmetrically arranged side-flipping covers 42 are rotatably installed on the insertion cylinder 41. Specifically, they include a pressure cover 421 fixedly connected and distributed in an L-shape, a rotating shaft 422, and a stop plate 423. The side-flipping covers 42 are rotatably installed at the lower end of the insertion cylinder 41 via the rotating shaft 422. The pressure cover 421 is located on both sides of the outside of the insertion cylinder 41, and the stop plate 423 is located at the opening of the insertion cylinder 41. When the insertion cylinder 41 is inserted into the soil, the soil presses upward against the stop plate 423 and drives the pressure covers 421 on both sides to rotate towards the ground foundation side. At this time, the pressure cover 421 has a cover cavity 401 near the ground foundation side. That is, if a sinking and settlement action occurs, the soil will be squeezed to continuously press upward against the stop plate 423, causing the pressure cover 421 to flip so that the cover cavity 401 presses against the soil below in the opposite direction, so that the local soil is continuously compacted to hinder settlement. The settlement trend will be converted into the pressure cover 421 providing upward support by pressing against the soil, thus realizing the function of lifting upward to prevent settlement.

[0024] In addition, the traditional ramming hammer 8 is prone to deviation and swaying during the lifting process, and it is easy to deviate from the original pile hole during the falling process. Therefore, in this embodiment, a positioning component 6 is rotatably installed at the front end of the lifting mechanical arm 2 via a lug 62. The positioning component 6 includes an electromagnetic suction plate 61 fixedly connected to the bottom end of the lug 62. The electromagnetic suction plate 61 can magnetically attract the iron hammer body after the ramming hammer 8 is lifted.

[0025] In this embodiment, the electromagnetic chuck 61 is rotated and thus can always remain horizontal under the action of gravity. A hollow lifting hole 601 is provided at the axis of the electromagnetic chuck 61 for centered lifting and hoisting of the lifting chain 7, so that the lifting chain 7 can centeredly lift the ramming hammer 8.

[0026] like Figure 11The structure shown has three recessed cavities 602 at the bottom of the electromagnetic suction plate 61. High-elasticity springs 63 are detachably installed in each recessed cavity 602. When the electromagnetic suction plate 61 attracts the hammer 8, it compresses the springs 63, converting them into elastic potential energy. Upon release, this elastic potential energy is converted into kinetic energy, applying downward thrust to push out the hammer 8. This results in a stronger impact energy compared to a hammer of equal mass, leading to a more efficient and effective impact. Furthermore, in this embodiment, a positioning pin 64 is located at the center of the spring 63. The hammer 8 has a positioning hole 801 corresponding to the positioning pin 64. To quickly and adaptively complete the positioning insertion, the outer end of the positioning hole 801 has a trumpet-shaped structure with a gradually increasing diameter from the inside out. This trumpet-shaped structure allows for the correct insertion of the positioning pin 64, ensuring that the impact area remains consistent.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A self-stabilizing SDDC dynamic compaction machine, comprising a tracked mobile vehicle (1) equipped with a lifting robotic arm (2), wherein a tamping hammer (8) is hoisted at the front end of the lifting robotic arm (2) via a lifting chain (7), characterized in that: Also includes: The side anti-sinking part includes side support arms (3) that are rotatably installed on both sides of the tracked mobile vehicle (1), and a skid plate (5) that is detachably installed at the front end of the side support arms (3) for attaching to the ground foundation. Multiple anti-sinking units (4) are installed at the bottom of the skid plate (5). The positioning component (6) is rotatably mounted at the front end of the lifting robotic arm (2), including an electromagnetic suction plate (61) with at least two positioning pins (64) mounted on the bottom. The hammer (8) is provided with a positioning hole (801) corresponding to the positioning pin (64). When the lifting chain (7) lifts the ram (8), the electromagnetic suction plate (61) positions and attracts the ram (8).

2. The self-stabilizing SDDC dynamic compaction machine as described in claim 1, characterized in that: The anti-settlement unit (4) includes a tube (41) with an open end at the lower end, and two symmetrically arranged side flaps (42) are rotatably mounted on the tube (41). The side flap (42) includes a pressure cover (421) that is fixedly connected and distributed in an L-shape, a rotating shaft (422) and a stop plate (423).

3. The self-stabilizing SDDC dynamic compaction machine as described in claim 2, characterized in that: The side-flip cover (42) is rotatably mounted at the lower end of the insert (41) via the rotating shaft (422); The pressure cover (421) is located on both sides of the outside of the insert (41), and the abutment (423) is located at the opening of the insert (41); When the anti-settlement unit (4) is pressed down into the ground foundation, the soil presses the abutment plate (423) upward and drives the pressure cover (421) on both sides to rotate towards the ground foundation side.

4. The self-stabilizing SDDC dynamic compaction machine as described in claim 3, characterized in that: The pressure cover (421) has a cover cavity (401) near the ground foundation side, and the cover cavity (401) is used to prevent downward settlement.

5. The self-stabilizing SDDC dynamic compaction machine as described in claim 1, characterized in that: The skid plate (5) has upwardly bent flanges (51) on at least two sides, and bolts (52) are fixedly connected to the skid plate (5) for detachable installation at the front end of the side support arm (3).

6. The self-stabilizing SDDC dynamic compaction machine as described in claim 5, characterized in that: A rubber bladder (9) is installed at the bottom of the flange (51). The rubber bladder (9) is used to suppress settlement by increasing the contact area due to pressure before settlement.

7. The self-stabilizing SDDC dynamic compaction machine as described in claim 1, characterized in that: The electromagnetic suction plate (61) is provided with a hollow lifting hole (601) at the center of the shaft for centered lifting of the lifting chain (7).

8. The self-stabilizing SDDC dynamic compaction machine as described in claim 7, characterized in that: A lug (62) is fixedly connected above the electromagnetic suction plate (61). The lug (62) is rotatably installed at the front end of the lifting mechanical arm (2) and is used to keep the electromagnetic suction plate (61) horizontal under the action of gravity.

9. The self-stabilizing SDDC dynamic compaction machine as described in claim 8, characterized in that: The bottom of the electromagnetic suction plate (61) is provided with multiple embedded slots (602), and a spring (63) is detachably installed in the embedded slot (602). The locating pin (64) is located at the center of the spring (63).

10. The self-stabilizing SDDC dynamic compaction machine as described in claim 1, characterized in that: The outer end of the positioning hole (801) has a trumpet-shaped structure with the diameter gradually increasing from the inside to the outside.

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