Telescopic automatic feeding drill for super deep vibro-replacement stone pile

Abstract

The utility model discloses a telescopic automatic feeding's super deep jar pile with drill belongs to engineering drill technical field, including first link, the inside sleeve joint of first link sets up second link, and second link can stretch out from first link, is used for increasing extension drilling depth, and the inside hollow setting of first link, second link forms the feeding channel, the top of second link is connected and pushes the thrust device, is used for pulling second link and advances the drilling downwards, sets up first limit portion on the outside wall of second link, and first limit portion is detachably connected locking portion, and the bottom surface of locking portion is after second link from first link stretches out and mutually contacts with the top surface of first link to make second link to first link push down, the utility model discloses be used to solve the problem of the low efficiency of the super deep pore forming that jar bit is not applicable to the composite geology and pore forming.

Description

Technical Field

[0001] This utility model belongs to the field of engineering drilling technology, specifically a retractable automatic feeding drilling tool for ultra-deep vibratory crushing of stone piles. Background Technology

[0002] Vibratory compaction drill bits are key equipment used in vibratory compaction construction for foundation treatment. They achieve densification or replacement of foundation soil through the vibration generated by the vibratory compactor combined with the impact of high-pressure water flow.

[0003] Currently, the vibratory drill bits commonly used on construction sites are mostly single-section structures. When constructing ultra-deep pile holes, it is typically necessary to first insert the single-section drill bit into the soil, then stop work, attach the drill rod, and then continue drilling. This construction method, requiring interruptions to complete the drill rod attachment, significantly reduces construction efficiency.

[0004] Furthermore, these types of drill bits primarily rely on the top pile frame for positioning and stability during operation, limiting their applicability. They are generally only suitable for relatively simple geological conditions such as sandy soil foundations or cohesive soils and silt. Therefore, in actual drilling, a pilot hole often needs to be prepared beforehand to carry out subsequent drilling operations. However, they are difficult to work with hard composite soil layers. Consequently, when used in geological conditions with composite soil layers, these drill bits not only have low drilling efficiency but also struggle to achieve high-quality ultra-deep hole formation. To address the shortcomings of the existing technology, a vibratory drilling tool has been developed that can effectively solve the relevant technical problems. Utility Model Content

[0005] To address the above problems, this utility model provides a retractable automatic feeding drill bit for ultra-deep vibratory compaction of rock piles, which solves the problem that vibratory drill bits are not suitable for ultra-deep drilling in complex geological conditions and have low drilling efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A retractable, automatically feeding drill bit for ultra-deep vibratory compaction of stone piles includes a first rod, a second rod that can extend outward to increase the drilling depth is sleeved inside the first rod, and the first and second rods are hollow inside to form a feeding channel; the top of the second rod is connected to a thrust device for pulling the first and second rods to advance the drilling hole synchronously downward.

[0008] The second rod is detachably connected to a locking part, which can contact the top surface of the first rod so that the second rod pushes the first rod downward after it is pulled out.

[0009] The first member is provided with a connecting plate, and the second member is provided with a connecting lug that can be connected to the connecting plate, so that the first member and the second member are fixed together when they are retracted.

[0010] The bottom of the first member is connected to the vibratory punch.

[0011] As a further improvement to the above solution, a step is provided inside the cavity of the first member, the step is located at the top of the first member, and a guide part is provided on the step;

[0012] The lower end of the second rod is provided with a second limiting part, which can contact and abut against the step to restrict the second rod in the extended position. A guide is provided on the outside of the second rod, which cooperates with the guide part to allow the second rod to slide within the first rod.

[0013] As a further improvement to the above scheme, a first auxiliary pipe is provided on both sides of the first rod, and a second auxiliary pipe is slidably sleeved inside the first auxiliary pipe for the transportation of water and cables.

[0014] The top of the second auxiliary tube is connected to the second rod.

[0015] As a further improvement to the above scheme, a connecting seat is provided on the second rod, and an ear plate is provided on the connecting seat to restrict the movement of the second auxiliary tube;

[0016] The ear plate is provided with a deflection groove that runs vertically through it. The second auxiliary tube passes through the deflection groove upward and slides relative to the side wall of the deflection groove.

[0017] As a further improvement to the above scheme, several retainers are provided on the outer side wall of the second member, and connectors and retaining rings are respectively provided on the outer side wall of the retainers;

[0018] Among them, the retaining rings are symmetrically arranged on both sides of the retainer and are slidably disposed with respect to the second auxiliary tube to maintain the interval between the second auxiliary tube and the second rod and prevent the second auxiliary tube from swinging.

[0019] The connectors are fixed to each other by flexible connectors, which are used to pull out the cage at intervals when the second member extends.

[0020] As a further improvement to the above scheme, a discharge port with internal and external penetration is provided on the side wall of the first member. The discharge port is close to the bottom of the first member, and a guide platform is also provided inside the first member to guide the sand and gravel in the feeding channel to be discharged from the discharge port.

[0021] As a further improvement to the above solution, the locking part is a half-type limiting ring, and the two limiting rings are locked and fixed to each other.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. In this application, by setting the first rod and the second rod, the drill rod of the vibratory drilling tool can be arranged into a telescopic structure. When drilling ultra-deep holes, by pulling the second rod out from the first rod and locking the locking part to the first limiting part, the drill rod structure can be quickly lengthened, thereby achieving the purpose of rapid installation. Under the push of the thrust device connected to the top of the second rod, a downward thrust is provided. For composite soil, there is no need to prepare a guide hole, and the hole forming efficiency is higher. In addition, by using an ultra-high pressure water pump, a high pressure water pressure of more than 18MPa can be provided, which can further improve the efficiency of ultra-deep drilling and pile forming operations.

[0024] 2. The drilling adopts the method of "gradually deepening from the outside to the inside", that is, the second rod with a smaller diameter is inserted into the first rod with a larger diameter, which can achieve smooth drilling. In addition, the pipe diameter inside the first and second rods gradually increases from top to bottom, making the material discharge smoother and preventing material from getting stuck inside the drill rod from the root. The set guide platform can discharge sand and gravel to both sides, thus avoiding material blockage at the discharge port.

[0025] 3. By interlocking the first and second auxiliary pipes, the water flow and cable arrangement can be adjusted during the upward pulling of the second rod, avoiding any impact during drilling. The retainer and retaining ring maintain the position of the second auxiliary pipe, preventing bending during operation. The interaction between the connector and the flexible connector allows for equidistant positioning of the second auxiliary pipe, preventing damage. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0028] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0029] Figure 4 for Figure 3 Schematic diagram of the structure in direction A;

[0030] Figure 5 A cross-sectional view of the locking positions of the first and second members;

[0031] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0032] Figure 7 This is a schematic diagram showing the state after the second member extends out from the first member;

[0033] Figure 8 This is a half-section diagram showing the second member extending from the first member;

[0034] Figure 9 This is a schematic diagram of the usage state of this utility model after the second member extends out of the first member.

[0035] In the diagram: 1. First rod; 2. Second rod; 3. Vibratory punch; 4. Locking part; 5. Pull rope; 6. Cage; 7. Flexible connector; 11. Connecting plate; 12. Step; 13. Guide part; 14. First auxiliary pipe; 15. Discharge port; 16. Guide platform; 21. Connecting ear; 22. First limiting part; 23. Second limiting part; 24. Guide part; 25. Second auxiliary pipe; 26. Connecting seat; 27. Ear plate; 271. Deflection groove; 61. Groove opening; 62. Connector; 63. Retaining ring. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0037] like Figure 1-9 As shown, the specific solution of this embodiment is as follows: a retractable automatic feeding drill bit for ultra-deep vibratory compaction of stone piles, including a first rod 1, the bottom of the first rod 1 is connected to a vibratory compaction head 3, a second rod 2 is sleeved inside the first rod 1, and the second rod 2 can extend out from the first rod 1 to increase and extend the drilling depth, such as... Figure 7 , 8 As shown, where Figure 9 The diagram shows the working state after the second rod 2 extends out. Some parts of the structure are only for illustration. The first rod 1 and the second rod 2 are interlocked. When it is necessary to extend the drill rod, the second rod 2 can be quickly pulled out from the first rod 1 to extend it, thereby achieving the function of rapid extension of the drill rod. When drilling, the drilling efficiency is higher.

[0038] The first rod 1 and the second rod 2 are hollow inside to form a feeding channel. Specifically, in this embodiment, the first rod 1 and the second rod 2 are hollow tube structures. Since the second rod 2 is sleeved inside the first rod 1, the sand and gravel enter from the top inlet of the second rod 2. Therefore, the size of the inner tube of the first rod 1 and the second rod 2 increases from top to bottom, which can reduce the phenomenon of material jamming during the feeding process.

[0039] The top of the second rod 2 is connected to a thrust device, which pushes the first rod 1 and the second rod 2 downwards, thus pulling the second rod 2 and the first rod 1 downwards synchronously for drilling. Specifically, the thrust device includes a winch with a pull rope 5 connected to it. One end of the pull rope 5 passes over a fixed pulley, and its top is fixedly connected to the top of the second rod 2. Therefore, as the winch continuously winds the pull rope 5, it pulls the rope 5 to drive the second rod 2 downwards for drilling. Figure 9 As shown.

[0040] The locking part 4 is detachably connected to the second rod 2, such as Figure 2 , 3 5. A first limiting part 22 is provided on the outer wall of the second rod 2. The first limiting part 22 is specifically a limiting groove provided on the second rod 2. The locking part 4 is a half-type limiting ring structure, and the two limiting rings are locked and fixed to each other by bolts, etc. In the specific use process, after the second rod 2 is pulled out from the first rod 1, the locking part 4 is fixed on the first limiting part 22. The bottom surface of the locking part 4 contacts the top surface of the first rod 1, so that the second rod 2 pushes the first rod 1 downward. Therefore, when the thrust device pushes the second rod 2 down, it will simultaneously drive the locking part 4 downward to squeeze the top of the first rod 1, thereby realizing the transmission of thrust and achieving the purpose of pushing the first rod 1 to move downward to drill.

[0041] In addition, a connecting plate 11 is provided on the first member 1, such as Figure 1 As shown, the connecting plate 11 consists of two limiting plates fixedly installed on the top of the first rod 1. The second rod 2 is provided with connecting ears 21 that can be connected to the connecting plate 11. When the second rod 2 is retracted into the first rod 1, the connecting ears 21 are aligned with the connecting plate 11. After inserting the locking pin, the first rod 1 and the second rod 2 are fixed together. Therefore, when the second rod 2 is not pulled out of the first rod 1 and extended, the first rod 1 and the second rod 2 are connected together by the mutual fixation of the connecting ears 21 and the connecting plate 11, thereby maintaining the stability between the first rod 1 and the second rod 2 during the drilling process.

[0042] like Figure 5 , 6As shown in Figures 8 and 9, in a preferred embodiment, a step 12 is provided inside the cavity of the first rod 1. The step 12 is located at the top of the first rod 1 and has a guide portion 13, specifically a guide groove. A second limiting portion 23 is provided at the lower end of the second rod 2. The second limiting portion 23 is a limiting boss located on the outer surface of the second rod 2. The second limiting portion 23 can contact and abut against the step 12 to restrict the second rod 2 in the extended position. With this structure, the second rod 2 can be prevented from being completely pulled out of the first rod 1. In conjunction with the locking portion 4, the position of the second rod 2 and the first rod 1 can be locked. A guide 24 is provided on the outer side of the second rod 2. The guide 24 is specifically a long strip-shaped guide slide key. The guide 24 cooperates with the guide portion 13 to allow the second rod 2 to slide inside the first rod 1, which can prevent the mutual rotation between the first rod 1 and the second rod 2.

[0043] like Figure 1 , 2 As shown, in a preferred embodiment, first auxiliary pipes 14 are respectively provided on both sides of the first rod 1. A second auxiliary pipe 25 is slidably sleeved inside the first auxiliary pipe 14 for transporting water and cables. Specifically, several connecting plates are provided between the first auxiliary pipe 14 and the first rod 1 to maintain the stability between the first auxiliary pipe 14 and the first rod 1. The diameter of the second auxiliary pipe 25 is smaller than the diameter of the first auxiliary pipe 14, and the second auxiliary pipe 25 and the first auxiliary pipe 14 are connected by a sliding seal, specifically a sliding sealing ring. The top of the second auxiliary pipe 25 is connected to the second rod 2. Specifically, a connecting seat 26 is provided on the second rod 2, and the connecting seat 26 is fixed to the second rod 2. An ear plate 27 is provided on the connecting seat 26 to restrict the movement of the second auxiliary pipe 25. A deflection groove 271 is provided on the ear plate 27, which extends vertically. The second auxiliary pipe 25 passes upward through the deflection groove 271 and is slidably disposed relative to the side wall of the deflection groove 271. Figure 1 As shown, a limiting platform is provided on the second auxiliary tube 25 to restrict the up and down movement of the second auxiliary tube 25. The top is limited by a nut, and a rubber pad is provided above the limiting platform and below the nut. The rubber pads are located above and below the ear plate 27 and are in contact with the ear plate 27 respectively. Thus, through the elastic action of the rubber pads, it is easy to maintain the recovery of the movement of the second auxiliary tube 25 after being subjected to force. The deflection groove 271 is mainly provided to accommodate the small swing requirements of the second auxiliary tube 25 in the first auxiliary tube 14 and reduce the interference between the movement and the ear plate 27.

[0044] like Figure 1 , 2As shown in Figures 7 and 8, in a preferred embodiment, a plurality of retainers 6 are provided on the outer side wall of the second rod 2. Specifically, the retainers 6 are annular sleeve structures with a shape similar to that of the second rod 2, and are slidably disposed relative to each other. Connectors 62 and retaining rings 63 are respectively provided on the outer side wall of the retainers 6. Figure 7 The retaining rings 63 are symmetrically arranged on both sides of the retainer 6 and are slidably disposed with respect to the second auxiliary tube 25 to maintain the interval between the second auxiliary tube 25 and the second rod 2 and prevent the second auxiliary tube 25 from swinging. The connectors 62 are fixed to each other by flexible connectors 7, which are used to pull out the retainer 6 at intervals when the second rod 2 extends. See attached figure. Figure 2 , 5 In this embodiment, to simplify the flexible connector 7 mechanism, a thick solid line is used instead. Specifically, the flexible connector 7 is a high-strength flexible tensile component such as a chain or iron chain. In the specific use process, the topmost connector 62 is also connected to the second rod 2 using the flexible connector 7. Therefore, when the second rod 2 is pulled upward, the flexible connector 7 is pulled upward sequentially, so that the retainer 6 is pulled out at equal intervals on the second rod 2, so as to achieve the function of maintaining the stable position of the second auxiliary tube 25. The inner side wall of the retainer 6 has a slot 61, and the guide 24 passes through the slot 61 to realize the rotation limit between the retainer 6 and the second rod 2.

[0045] like Figure 4 , 8 As shown, in a preferred embodiment, the first rod 1 has a discharge port 15 that extends through both the inside and outside. The discharge port 15 is close to the bottom of the first rod 1, and a guide platform 16 is also provided inside the first rod 1. The guide platform 16 is a conical structure that is high in the middle and low on both sides, which is used to guide the sand and gravel in the feeding channel to be discharged from the discharge port 15. After the sand and gravel are discharged from the discharge port 15 to both sides, they can be compacted by the vibration of the vibrating head 3.

[0046] The specific working principle of this utility model is as follows: When the second rod 2 extends into the first rod 1, during the drilling process, the vibratory punch 3 is directly aligned with the position to be processed. Then, the second rod 2 and the first rod 1 are pushed downward by the thrust device. The vibratory punch 3 is then turned on, and high-pressure water flow is introduced through the first auxiliary pipe 14 and the second auxiliary pipe 25 to maintain the pressure above 18MPa. Under the combined action of the thrust device, the vibratory punch 3, and the high-pressure water flow, the drilling proceeds downward. The thrust device pulls the second rod 2 downward, and under the mutual connection of the connecting plate 11 and the connecting ear 21, the first rod 1 is driven to drill downward synchronously.

[0047] When the first rod 1 is fully drilled into the foundation and the drill rod needs to be lengthened, the locking pin between the connecting plate 11 and the connecting lug 21 is removed first, and then the second rod 2 can be pulled out upwards. During the upward pulling of the second rod 2, the retainer 6 is gradually pulled out upwards by the pulling of the flexible connector 7, thereby maintaining the position of the second auxiliary tube 25. After the second rod 2 is fully pulled out, the locking part 4 is fastened to the first limiting part 22. Under the interaction of the locking part 4, the step 12, and the second limiting part 23, the second rod 2 and the first limiting part 22 are secured. The first rods 1 are locked together, and drilling continues. During the drilling process, the force applied to the second rod 2 by the thrust device is applied to the first rod 1 through the locking part 4, thereby completing the downward drilling process. After the drilling is completed, the introduction of high-pressure water is stopped, and the sand and gravel material of the pile foundation is injected from the top of the second rod 2. The sand and gravel material enters the interior of the first rod 1 through the interior of the second rod 2, and is then sent out to both sides from the discharge port 15. Under the continuous vibration of the vibratory head 3, the sand and gravel material is compacted, and the vibratory pile is completed by continuously lifting the entire drill bit upward.

[0048] It should be noted that, in this document, the terms "including," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the present invention to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A retractable, automatically feeding drill bit for ultra-deep vibratory compaction of rock piles, characterized in that, Includes a first rod (1), and a second rod (2) that can extend outward to increase the drilling depth is sleeved inside the first rod (1). The first rod (1) and the second rod (2) are hollow inside to form a feeding channel. The top of the second rod (2) is connected to a thrust device for pulling the first rod (1) and the second rod (2) to advance the drilling hole downward simultaneously. The second rod (2) is detachably connected to a locking part (4), which can contact the top surface of the first rod (1) so that the second rod (2) pushes the first rod (1) downward after being pulled out; The first member (1) is provided with a connecting plate (11), and the second member (2) is provided with a connecting lug (21) that can be connected to the connecting plate (11) so that the first member (1) and the second member (2) are fixed together when they are retracted. The bottom of the first member (1) is connected to the vibratory punch (3).

2. The retractable automatic feeding drilling tool for ultra-deep vibratory compaction stone piles according to claim 1, characterized in that, The first rod (1) has a step (12) inside its cavity. The step (12) is located at the top of the first rod (1) and has a guide part (13). The lower end of the second rod (2) is provided with a second limiting part (23), which can contact and abut against the step (12) so that the second rod (2) is restricted in the extended position. A guide (24) is provided on the outside of the second rod (2), and the guide (24) cooperates with the guide part (13) so that the second rod (2) slides in the first rod (1).

3. The retractable automatic feeding drilling tool for ultra-deep vibratory compaction stone piles according to claim 1, characterized in that, The first rod (1) is provided with a first auxiliary pipe (14) on both sides, and a second auxiliary pipe (25) is slidably sleeved inside the first auxiliary pipe (14) for the transportation of water and cables; The top of the second auxiliary tube (25) is connected to the second rod (2).

4. The retractable automatic feeding drilling tool for ultra-deep vibratory compaction stone piles according to claim 3, characterized in that, The second rod (2) is provided with a connecting seat (26), and the connecting seat (26) is provided with an ear plate (27) that restricts the movement of the second auxiliary tube (25). The ear plate (27) is provided with a deflection groove (271) that runs vertically through it. The second auxiliary tube (25) passes through the deflection groove (271) upward and slides relative to the side wall of the deflection groove (271).

5. The retractable automatic feeding drilling tool for ultra-deep vibratory compaction stone piles according to claim 3, characterized in that, Several retainers (6) are provided on the outer side wall of the second member (2), and connectors (62) and retaining rings (63) are respectively provided on the outer side wall of the retainers (6). Among them, the retaining ring (63) is symmetrically arranged on both sides of the retainer (6) and is slidably set with the second auxiliary tube (25) to maintain the interval between the second auxiliary tube (25) and the second rod (2) and prevent the second auxiliary tube (25) from swinging. The connectors (62) are fixed to each other by flexible connectors (7) for pulling out the retainer (6) at intervals when the second rod (2) extends.

6. The retractable automatic feeding drilling tool for ultra-deep vibratory compaction stone piles according to claim 1, characterized in that, The first rod (1) has a discharge port (15) that runs through the inside and outside. The discharge port (15) is close to the bottom of the first rod (1), and the first rod (1) also has a guide platform (16) for guiding the sand and gravel in the feeding channel to be discharged from the discharge port (15).

7. The retractable automatic feeding drilling tool for ultra-deep vibratory compaction stone piles according to claim 1, characterized in that, The locking part (4) is a half-type limiting ring, and the two limiting rings are locked together.

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