An ultra-deep vibro-replacement stone pile drilling machine and a construction method thereof

Abstract

The application discloses a kind of super deep vibroflotation rubble pile drilling machine and construction method thereof, it is applicable to the field of vibroflotation method foundation treatment technology, super deep vibroflotation rubble pile drilling machine includes: telescopic guide rod, pile frame, vibroflot and traction piece, telescopic guide rod includes outer guide rod, inner guide rod and intermediate guide rod, vibroflot is located at the front end of inner guide rod, traction piece can be inserted into inner guide rod and is connected with vibroflot, the upper end and lower end of the column of pile frame are respectively provided with upper retainer and lower retainer, the upper end and lower end of outer guide rod are respectively connected with upper retainer and lower retainer corresponding;Lower retainer is provided with adjustable clamping part, to selectively clamp outer guide rod, inner guide rod or intermediate guide rod, outer guide rod and inner guide rod are all gap fit with intermediate guide rod, the outer periphery of the upper end of inner guide rod and intermediate guide rod is all provided with annular groove, half ring key can be inserted into annular groove, and half ring key clamps inner guide rod and intermediate guide rod or clamps outer guide rod and intermediate guide rod.By using the device, the vibroflotation hole-forming effect of vibroflot can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of vibro-compaction foundation treatment technology, and more specifically, to an ultra-deep vibro-compaction stone pile drilling rig. Furthermore, it also relates to a construction method applied to the aforementioned ultra-deep vibro-compaction stone pile drilling rig. Background Technology

[0002] In existing technologies, vibro-compaction is a method of foundation treatment: it generally involves using lifting equipment to hoist a vibro-compactor 06 with a guide rod, and under the excitation force generated by the vibro-compactor 06, compacting the loose foundation soil layer, or vibro-compacting holes in the foundation soil layer and then backfilling with gravel or other fillers, and vibrating and squeezing them to form a reinforcement body (vibro-compacted pile), so that the reinforcement body and the surrounding foundation soil form a composite foundation, thereby achieving the purpose of foundation treatment to improve the bearing capacity of the foundation, reduce the foundation settlement, increase the foundation stability, and improve the foundation's resistance to earthquake liquefaction.

[0003] The guide rod connecting the vibratory compactor 06 is one of the key components in vibratory compaction construction. Its structure and length determine the depth and quality of vibratory compaction stone pile construction. Traditionally, the guide rod connecting the vibratory compactor 06 is an integral structure with an unchangeable length, making it inconvenient to control the depth of the stone pile. Especially when constructing deep stone piles, the guide rod needs to be very long, and large crane equipment is required for construction, resulting in high construction costs and potential safety and quality hazards.

[0004] To address the aforementioned issues, invention patent 201410004466.9 proposed a technical solution for an "ultra-deep stone pile drilling tool," which allows for easy adjustment of the length of a telescopic guide rod to facilitate the construction of stone piles at different depths.

[0005] However, the above-mentioned telescopic guide rod technical solution still has the following problems:

[0006] 1. Lacks the function of vibratory punching: Each section of the telescopic guide rod is pulled downward by its own weight by the lifting wire rope. However, when the hole-making depth of the vibratory punch at the front end of the guide rod is too deep (>30M) and the hole-making resistance is greater than the weight of the guide rod, the guide rod will retract because the telescopic guide rod does not have a reverse force constraint function, making vibratory punching unable to proceed normally.

[0007] 2. Due to the problem mentioned in point 1 above, the construction process was also forced to change: first, other rotary drilling rigs were used to drill holes, then the telescopic guide rod was extended to send the vibratory compactor to the bottom of the hole, and then it was lifted up to vibrate and compact the crushed stone material in sections to form piles. This led to new problems:

[0008] ① The construction did not conform to the mechanism and process of vibro-compaction method—vibro-compaction hole making, hole cleaning, filling and compaction pile formation. It lacked the original process of vibro-compaction hole making and the effect of vibration compaction to prevent liquefaction of soft soil layers was lost, which affected the quality of the pile body.

[0009] ② The addition of an auxiliary hole-forming device increases costs and also affects construction efficiency.

[0010] 3. Because there is no completely sealed structure between each section of the telescopic guide rod, soil and sand may intrude, causing the guide rod to expand and contract poorly or even become stuck, thus affecting normal construction.

[0011] 4. Because there is no constraint between each section of the telescopic guide rod in the circumferential direction, the rotation generated under the horizontal excitation force of the vibratory impactor will cause the traction steel wire rope, cable and water / gas pipe to become entangled, and even cause unexpected safety accidents.

[0012] To address the four issues mentioned above, patent application 202111126940.1 proposed a technical solution for "a vibratory stone crushing pile machine and its vibratory crusher guide rod device," which can withstand reverse force, prevent rotation and seal, and the pile formation conforms to the vibratory crushing construction mechanism without requiring large lifting equipment.

[0013] However, the above-mentioned technical solution for the vibratory impactor guide rod still has the following problems:

[0014] 1. The guide rods are connected by pins to bear the reverse force. Since there is a certain gap between the pin and the pin hole, and the actual force contact of the pin is line contact, under the long-term action of high frequency and large excitation force of the vibratory impactor, the contact stress is high, the wear is fast, the contact fatigue failure is very easy to occur, and the service life is short.

[0015] 2. Since the seal is installed inside the guide rod joint, and the wire rope, cable and water vapor pipe pass through it, when the seal ring is worn and fails and needs to be replaced, the guide rod needs to be disassembled and the wire rope, cable and water vapor pipe need to be pulled out, making the replacement and maintenance of the seal inconvenient, time-consuming and affecting the construction efficiency.

[0016] 3. Since the installation and bolt fixing of the positioning ring require sufficient operating space, the diameter difference between each guide rod section must be large enough. When the hole is deep and there are many guide rod sections, the outer diameter of the guide rod will be too large, which is not conducive to the hole making and filling operations of vibratory crushing stone piles.

[0017] Currently, some equipment has proposed a telescopic guide rod operation mode. For example, patent 201410639437.X, "Telescopic Guide Rod for Vibratory Stone Crushing Pile Machine," proposes a telescopic guide rod operation mode, with the specific steps as follows:

[0018] a. The vibratory pile driver 01 moves to the pile position, such as Figure 1 As shown;

[0019] b. The telescopic guide rod 08, consisting of the top casing 02, the intermediate casing 03, and the bottom casing 04, can descend by its own weight under the traction of the lifting wire rope 05. The vibratory impactor 06 at the front end of the telescopic guide rod 08 vibrates and enters the formation to create a borehole. Figure 2 As shown;

[0020] c. When the flange 07 at the top of the top casing 02 contacts the support, the descent stops. The intermediate casing 03 and the bottom casing 04, under the traction of the lifting wire rope 05, extend relative to the top casing 02 and continue to descend. The vibratory compactor 06 at the front end of the telescopic guide rod 08 vibrates and enters the formation to create a borehole. Figure 3 As shown;

[0021] d. When the upper clamping platform 010 of the intermediate casing 03 contacts the lower receiving lug 09 of the top casing 02, the descent stops. The bottom casing 04, under the traction of the lifting wire rope 05, extends relative to the intermediate casing by its own weight and continues to descend. The vibratory impactor 06 at the front end of the telescopic guide rod 08 vibrates and enters the formation to drill to the predetermined depth. Figure 4 As shown;

[0022] e. The retraction steps of the telescopic guide rod 08 are the reverse of the steps described above.

[0023] In the existing technology, the telescopic operation mode and structure of other telescopic guide rods are basically the same as those of the telescopic guide rod 08. The main problem with these telescopic guide rods is that when the drilling depth is relatively deep (more than 40 meters), the telescopic guide rod will retract because it does not have a reverse force constraint function, and cannot operate normally, that is, it does not have the function of vibratory drilling.

[0024] In conclusion, how to improve the oscillating hole-forming effect of the vibratory punch is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0025] In view of this, the purpose of this invention is to provide an ultra-deep vibro-compaction stone pile drilling rig that conforms to the construction mechanism of vibro-compaction, can withstand the reverse force of vibro-compaction operation and has a high impact resistance life, can prevent the telescopic guide rod from rotating, can achieve reliable physical full sealing and is easy to replace and maintain, does not require large lifting equipment, and is highly efficient, of good quality and low in overall cost. Another purpose of this invention is to provide a construction method applied to the above-mentioned ultra-deep vibro-compaction stone pile drilling rig.

[0026] To achieve the above objectives, the present invention provides the following technical solution:

[0027] A deep vibratory compaction stone pile drilling rig includes: a telescopic guide rod, a pile frame, a vibratory compactor for vibratory compaction, and a traction component for driving the vibratory compactor to rise and fall. The telescopic guide rod includes an outer guide rod, an inner guide rod, and an intermediate guide rod slidably disposed between the outer guide rod and the inner guide rod. The vibratory compactor is disposed at the front end of the inner guide rod. The traction component can pass through the inner guide rod and connect to the vibratory compactor. The upper and lower ends of the column of the pile frame are respectively provided with a slidable upper retainer and a lower retainer. The upper and lower ends of the outer guide rod are respectively connected to the upper retainer and the lower retainer.

[0028] The lower retainer is provided with an adjustable clamping part to selectively clamp the outer guide rod, the inner guide rod, or the intermediate guide rod. The outer guide rod and the inner guide rod are both clearance-fitted with the intermediate guide rod. The upper outer periphery of the inner guide rod and the intermediate guide rod are provided with an annular groove. A pair of semi-ring keys can be inserted into the annular groove. The outer periphery of the semi-ring key is fitted with a circular sleeve. The semi-ring key can clamp the inner guide rod and the intermediate guide rod or clamp the outer guide rod and the intermediate guide rod.

[0029] Preferably, the outer guide rod includes an outer main sleeve, an outer upper flange located at the upper end of the outer main sleeve, and an outer lower connector located at the lower end of the outer main sleeve, wherein the outer upper flange is connected to the upper retainer; the intermediate guide rod includes a middle main sleeve, a middle upper connector located at the upper end of the middle main sleeve, and a middle lower connector located at the lower end of the middle main sleeve; the inner guide rod includes an inner main sleeve, an inner upper connector located at the upper end of the inner main sleeve, and an inner lower connector located at the lower end of the inner main sleeve.

[0030] The outer periphery of the upper and middle joint is provided with a center positioning device. The center positioning device includes a center positioning block A with a center keyway, a center positioning block B for reducing the gap between the middle guide rod and the outer guide rod, a center support sleeve, and a center locking nut. The center locking nut is used to lock the center positioning block A and the center positioning block B to the outer periphery of the center support sleeve. The outer main sleeve is provided with an outer key strip that engages with the center keyway.

[0031] The outer periphery of the upper inner connector is provided with an inner positioning device. The inner positioning device includes an inner positioning block A with an inner keyway, an inner positioning block B for reducing the gap between the intermediate guide rod and the inner guide rod, an inner support sleeve, and an inner locking nut. The inner locking nut is used to lock the inner positioning block A and the inner positioning block B to the outer periphery of the inner support sleeve. The middle main sleeve is provided with a middle key strip that engages with the inner keyway.

[0032] Preferably, both the upper middle connector and the inner upper connector are provided with a sealing ring and the annular groove on their outer periphery, and the sealing ring is used to seal the annular groove.

[0033] Preferably, the outer periphery of the lower outer connector is provided with the annular sleeve and a sealing ring for sealing the annular sleeve, and the annular sleeve is detachably provided at the lower end of the lower outer connector.

[0034] Preferably, the outer periphery of the lower part of the connector is provided with the annular sleeve and a sealing ring for sealing the annular sleeve, and the annular sleeve is detachably provided at the lower end of the lower part of the connector.

[0035] Preferably, the traction component includes a winch mounted on the pile frame and a wire rope connected to the winch. The lower inner joint and the transition joint of the vibratory compactor are detachably connected. The transition joint is provided with a lifting lug, which is detachably connected to the wire rope.

[0036] Preferably, the device further includes a traveling chassis, a cable reel, a water and gas pipe reel, and a gooseneck frame located at the bottom of the pile frame. The cable reel and the water and gas pipe reel are both located on the pile frame, and the gooseneck frame is located at the top of the pile frame. The cable of the cable reel and the water and gas pipe of the water and gas pipe reel are both connected to the vibratory compactor by passing through the inner guide rod via the gooseneck frame.

[0037] Preferably, the number of intermediate guide rods is a positive integer N, where N is greater than or equal to 1; the height of the inner guide rod is H1; the height of the outer guide rod is H2; the height of the intermediate guide rod is H3; the total height L of the pile frame is greater than or equal to the sum of max(H1, H2, H3) and the preset space A of the vibratory compactor; and the drilling depth Hk of the pile frame is H1 + H2 + N * H3 + A.

[0038] Preferably, the number of intermediate guide rods is a positive integer N, where N is greater than or equal to 1, the number of sections of the telescopic guide rod is N+2, the total height L of the pile frame is greater than or equal to the sum of H and the preset space A of the vibratory compactor, and the drilling depth Hk of the pile frame is (N+2)*H+A.

[0039] A construction method, applied to the ultra-deep vibratory compaction stone pile drilling rig described in any one of the above claims, the construction method comprising:

[0040] The inner guide rod extends downward relative to the middle guide rod, and the vibratory impactor located at the front end of the inner guide rod then enters the formation to vibrate and impact borehole.

[0041] When the inner guide rod extends fully relative to the middle guide rod, a pair of semi-ring keys are installed in the annular groove at the upper end of the inner guide rod, and the semi-ring keys are radially fixed by the annular sleeve.

[0042] The intermediate guide rod is controlled to extend downward relative to the outer guide rod, and the vibratory punch continues to vibrate and punch to create a hole;

[0043] When the intermediate guide rod extends completely relative to the outer guide rod, a pair of semi-ring keys are installed in the annular groove at the upper end of the intermediate guide rod, and the semi-ring keys are radially fixed by the annular sleeve.

[0044] The outer guide rod is controlled to extend downward relative to the clamping part until the vibratory punch creates a hole to a predetermined depth.

[0045] Crushed stone is gradually filled into the hole, and the telescopic guide rod is retracted in reverse order of the above steps. The vibratory compactor is driven to vibrate and compact the crushed stone while being lifted section by section until the construction of the ultra-deep vibratory compaction crushed stone pile at the pile position is completed.

[0046] When using the ultra-deep vibratory compaction stone pile drilling rig provided by this invention, the drilling rig can be moved to the pile location. Then, with the traction of the traction component and the gravity of the vibratory compactor, the inner guide rod and the middle guide rod can be extended in sequence, and finally lowered together with the outer guide rod. The vibratory compactor at the front end of the telescopic guide rod then enters the stratum to vibrate and compact the hole to the designed depth, and fills it with crushed stone in stages. Afterwards, with the lifting action of the traction component, the inner guide rod and the middle guide rod can be retracted in sequence, and finally raised together with the outer guide rod. Simultaneously, the vibratory compactor at the front end of the telescopic guide rod rises while vibrating and compacting the crushed stone filling material until the ultra-deep stone pile construction is completed.

[0047] The telescopic operation of the telescopic guide rod is as follows: First, the outer guide rod and the middle guide rod are clamped by the clamping part of the lower retainer, keeping the outer guide rod and the middle guide rod above the ground. The inner guide rod can be lowered by the traction of the traction component, the gravity of the vibratory compactor, and its own weight, so that the inner guide rod extends relative to the middle guide rod. The vibratory compactor at the front end of the inner guide rod then enters the formation to vibrate and compact the hole. When the inner guide rod is fully extended relative to the middle guide rod, a pair of semi-ring keys can be installed in the annular groove at the upper end of the inner guide rod. The semi-ring keys are radially constrained by the annular sleeve. The semi-ring keys can clamp the inner guide rod and the middle guide rod, so that the inner guide rod and the middle guide rod can achieve axial surface contact and reverse limiting.

[0048] Then, by adjusting the size of the clamping part of the lower retainer, the middle guide rod can pass through the clamping part, while the outer guide rod remains on the ground. The middle guide rod, together with the inner guide rod, descends with the help of the traction of the traction component, the gravity of the vibratory impactor, and its own weight, causing the middle guide rod to extend relative to the outer guide rod. The inner guide rod, which is now connected to the middle guide rod, drives the vibratory impactor at the front end to continue vibrating and punching to create a hole. When the middle guide rod is fully extended relative to the outer guide rod, a pair of semi-ring keys can be installed in the annular groove at the upper end of the middle guide rod, and the semi-ring keys are radially constrained by the annular sleeve. The semi-ring keys can clamp the outer guide rod and the middle guide rod, so that the outer guide rod and the middle guide rod achieve axial surface contact and reverse limiting.

[0049] Afterwards, the clamping part of the lower retainer can be fully opened so that the outer guide rod can move downward through the clamping part. At this time, the outer guide rod, the middle guide rod and the inner guide rod are connected to form an integrated guide rod. With the help of the guide of the lower retainer and the traction of the traction component, the integrated guide rod can continue to descend and drive the front end vibratory punch to continue vibrating and punching to the predetermined depth.

[0050] Finally, crushed stone can be filled into the hole section by section, and the telescopic guide rod can be retracted in reverse order of the above process. The vibratory compactor is driven to vibrate and compact the crushed stone while being lifted section by section until the construction of the ultra-deep vibratory compaction crushed stone pile at the pile position is completed. When retracting the telescopic guide rod, the ring sleeve and the semi-ring key need to be removed from the annular groove to avoid affecting the retraction operation of the telescopic guide rod.

[0051] Furthermore, the telescopic guide rod provided by this invention has a rigid connection between each section, which can resist the reverse resistance during the process of creating holes and compacting crushed stone by the vibratory compactor, and has the function of self-vibratory compaction. Moreover, the rigid connection here adopts a surface contact connection limit composed of a semi-ring key and an annular groove, which has low contact stress, reliable and convenient use, strong impact resistance, and long service life. In addition, the connection operation of each section of the guide rod is carried out on the ground, which is convenient for operators to control and adjust.

[0052] Furthermore, the vibratory compactor guide rod for ultra-deep vibratory compaction of stone piles of the present invention has the following positive effects and advantages:

[0053] 1. According to the present invention, each section of the telescopic guide rod can be rigidly connected to resist the reverse and forward resistance during the process of the vibratory compactor making holes and compacting crushed stone, and has the function of self-vibratory compaction to form holes; moreover, the above-mentioned rigid connection adopts a combination of semi-ring key and positioning block surface contact connection limit, which has low contact stress, reliable and convenient use, strong impact resistance and long service life.

[0054] 2. According to the present invention, since each section of the telescopic guide rod achieves a complete physical seal, no soil or sand will intrude, allowing the guide rod to extend and retract smoothly without obstruction. Moreover, the sealing structure using an outer diameter-mounted sealing ring and a circular sleeve is easy to manufacture and quick to install. When the sealing ring is worn and needs to be replaced, there is no need to disassemble the guide rod or pull out the wire rope, cable, or water pipe. The sealing components can be disassembled and replaced sequentially from below the telescopic guide rod, making the replacement and maintenance of the sealing components simple and easy, and greatly improving work efficiency.

[0055] 3. According to the present invention, each section of the telescopic guide rod can extend and retract without relative rotation, and will not rotate under the horizontal excitation force of the vibratory compactor. This prevents the entanglement of the traction wire rope, cable, and water vapor pipe, ensuring safe production. Moreover, due to the use of a compact positioning device, the required operating space is greatly reduced, and the diameter difference between each section of the guide rod is reduced. When the hole is deep and there are many sections of the guide rod, the outer diameter of the guide rod will not be too large, which is beneficial for vibratory compaction of stone pile hole making, filling and other operations.

[0056] 4. According to the present invention, the total height of the equipment required to lift the vibratory compactor guide rod is approximately the ratio of the hole depth to the number of sections of the vibratory compactor guide rod. For example, when using a three-section vibratory compactor guide rod to construct a 90m pile, the total height of the lifting equipment is only around 30m, which significantly reduces the height and cost compared to the traditional method that requires large lifting equipment of over 90m, and greatly improves safety.

[0057] 5. According to the present invention, the operations of vibratory compaction for hole making, hole cleaning, filling and compaction pile formation are fully in line with the vibratory compaction mechanism and vibratory compaction construction process. Moreover, during the construction process, the sealing and rigid connection between each section of the telescopic guide rod are all carried out on the ground, which is convenient and safe. While ensuring the quality of the vibratory compaction stone pile, no additional auxiliary equipment is required, which reduces costs and improves construction efficiency.

[0058] In addition, the present invention also provides a construction method for the above-mentioned ultra-deep vibratory compaction stone pile drilling rig. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0060] Figure 1 This is a schematic diagram of the structure of a vibratory impactor guide rod in the prior art.

[0061] Figure 2 A schematic diagram of the structure of the telescopic guide rod of the vibratory impactor when it is extended;

[0062] Figure 3 A schematic diagram of the structure when the telescopic guide rod continues to extend;

[0063] Figure 4 This is a schematic diagram of the telescopic guide rod when it is fully extended.

[0064] Figure 5 This is a schematic diagram of the structure of the ultra-deep vibratory compaction stone pile drilling rig provided by the present invention;

[0065] Figure 6 This is a schematic diagram of the telescopic guide rod.

[0066] Figure 7 This is a schematic diagram of the telescopic guide rod when it is extended.

[0067] Figure 8 for Figure 7 Cross-sectional view of AA in the middle;

[0068] Figure 9 for Figure 7 Cross-sectional view of BB in the middle;

[0069] Figure 10 for Figure 7 Cross-sectional view of CC in China;

[0070] Figure 11 for Figure 7 Cross-sectional view of DD in the middle;

[0071] Figure 12 This is a schematic diagram of the lower retainer.

[0072] Figure 13 This is a schematic diagram of the structure when an ultra-deep vibratory compaction stone pile drilling rig is moved to the pile location.

[0073] Figure 14 This is a schematic diagram of the structure when the inner guide rod and vibratory impactor are extended.

[0074] Figure 15 This is a schematic diagram of the structure when the inner guide rod drives the middle guide rod to extend.

[0075] Figure 16 This is a schematic diagram of the structure when the middle guide rod drives the outer guide rod to extend.

[0076] Figure 17 This is a schematic diagram of the structure when the wire rope drives the inner guide rod and vibrator to retract.

[0077] Figure 18 This is a schematic diagram of the structure when the inner guide rod drives the middle guide rod to retract.

[0078] Figure 19 This is a schematic diagram of the structure when the middle guide rod drives the outer guide rod to retract.

[0079] Figure 20 This is a schematic diagram of the telescopic guide rod when it is fully retracted.

[0080] Figure 21 This is a flowchart illustrating the construction method provided by the present invention.

[0081] Figures 1-4 middle:

[0082] 01 is the pile driver, 02 is the top casing, 03 is the intermediate casing, 04 is the bottom casing, 05 is the wire rope, 06 is the vibratory compactor, 07 is the flange, 08 is the telescopic guide rod, 09 is the receiving lug, and 010 is the upper clamping platform.

[0083] Figures 5-21 middle:

[0084] 1 is the telescopic guide rod, 2 is the pile frame, 3 is the vibratory compactor, 4 is the traction component, 5 is the outer guide rod, 6 is the inner guide rod, 7 is the intermediate guide rod, 8 is the column, 9 is the upper retainer, 10 is the lower retainer, 11 is the clamping part, 12 is the annular groove, 13 is the semi-annular key, 14 is the circular ring sleeve, 15 is the outer main sleeve, 16 is the outer upper flange, 17 is the outer lower joint, 18 is the middle main sleeve, 19 is the middle upper joint, 20 is the middle lower joint, 21 is the inner main sleeve, 22 is the inner upper joint, 23 is the inner lower joint, 24 is the middle positioning device, 25 is the middle positioning block A, 26 is the middle positioning block B, 27 is the middle positioning block B. 28 is the central support sleeve, 29 is the central locking nut, 30 is the outer key strip, 31 is the inner positioning device, 32 is the inner positioning block A, 33 is the inner positioning block B, 34 is the inner support sleeve, 35 is the inner locking nut, 36 is the sealing ring, 37 is the winch, 38 is the wire rope, 39 is the transition joint, 40 is the lifting lug, 41 is the traveling chassis, 42 is the cable reel, 43 is the water and gas pipe reel, 44 is the gooseneck frame, 45 is the fixed spacer, 46 is the guide sleeve, 47 is the fastener, 48 is the pin, 49 is the cable, 50 is the water and gas pipe, 51 is the guide rail, 52 is the bolt, 53 is the central key strip, and 54 is the crushed stone. Detailed Implementation

[0085] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0086] The core of this invention is to provide an ultra-deep vibratory compaction stone pile drilling rig that conforms to the construction mechanism of vibratory compaction, can withstand the reverse force of vibratory compaction operation, has a high impact resistance life, can prevent the telescopic guide rod from rotating, can achieve reliable physical full sealing and is easy to replace and maintain, does not require large lifting equipment, and is highly efficient, of good quality and low in overall cost. Another core aspect of this invention is to provide a construction method applied to the aforementioned ultra-deep vibratory compaction stone pile drilling rig.

[0087] Please refer to Figures 5 to 21 .

[0088] This specific embodiment provides an ultra-deep vibratory compaction stone pile drilling rig, including: a telescopic guide rod 1, a pile frame 2, a vibratory compactor 3 for vibratory compaction, and a traction component 4 for driving the vibratory compactor 3 to rise and fall. The telescopic guide rod 1 includes an outer guide rod 5, an inner guide rod 6, and an intermediate guide rod 7 slidably disposed between the outer guide rod 5 and the inner guide rod 6. The vibratory compactor 3 is located at the front end of the inner guide rod 6. The traction component 4 can pass through the inner guide rod 6 and connect with the vibratory compactor 3. The upper and lower ends of the column 8 of the pile frame 2 are respectively provided with a slidable upper retainer 9 and a lower retainer 10. The outer guide rod 5... The upper and lower ends are respectively connected to the upper retainer 9 and the lower retainer 10; the lower retainer 10 is provided with an adjustable clamping part 11 to selectively clamp the outer guide rod 5, the inner guide rod 6 or the middle guide rod 7. The outer guide rod 5 and the inner guide rod 6 are both clearance-fitted with the middle guide rod 7. The upper outer periphery of the inner guide rod 6 and the middle guide rod 7 are provided with an annular groove 12. A pair of semi-annular keys 13 can be inserted into the annular groove 12. The outer periphery of the semi-annular key 13 is fitted with a circular sleeve 14. The semi-annular key 13 can clamp the inner guide rod 6 and the middle guide rod 7 or clamp the outer guide rod 5 and the middle guide rod 7.

[0089] It should be noted that the upper retainer 9 and the lower retainer 10 can move up and down along the column 8, meaning that the upper retainer 9 and the lower retainer 10 can slide along the guide rail 50 of the column 8 and lock in their corresponding preset positions. The traction component 4 can be set as a steel wire rope 37. The telescopic guide rod 1 is installed on the column 8 of the pile frame 2 by means of the steel wire rope 37, the upper retainer 9 and the lower retainer 10. The telescopic guide rod 1 can move up and down and extend and retract along the column 8 of the pile frame 2 by means of the traction of the steel wire rope 37 and the guidance of the retainer, so that the vibratory compactor 3 installed at the front end of the telescopic guide rod 1 can complete the construction of the ultra-deep crushed stone pile. In addition, the lower retainer 10 is provided with a guide sleeve 45 and a clamping part 11. The lower part of the guide sleeve 45 is connected to the clamping part 11. The clamping part 11 can adjust its radial dimension to selectively clamp or release the telescopic guide rod 1, so that the inner guide rod 6, the middle guide rod 7 and the outer guide rod 5 extend downward in sequence.

[0090] In practical applications, the shape, structure, size, and material of the telescopic guide rod 1, pile frame 2, vibratory compactor 3, and traction component 4 can be determined according to the actual situation and needs.

[0091] When using the ultra-deep vibratory compaction stone pile frame provided by this invention, the pile frame 2 can be moved to the pile position. Then, with the traction of the traction member 4 and the gravity of the vibratory compactor 3, the inner guide rod 6 and the middle guide rod 7 can be extended in sequence, and finally lowered together with the outer guide rod 5. Meanwhile, the vibratory compactor 3 at the front end of the telescopic guide rod 1 enters the stratum to vibrate and compact the hole to the designed depth, and fills in the crushed stone material 53 in stages. Then, with the lifting action of the traction member 4, the inner guide rod 6 and the middle guide rod 7 can be retracted in sequence, and finally raised together with the outer guide rod 5. At the same time, the vibratory compactor 3 at the front end of the telescopic guide rod 1 rises while vibrating and compacting the crushed stone material until the ultra-deep crushed stone pile construction is completed.

[0092] The telescopic operation of the telescopic guide rod 1 is as follows: First, the clamping part 11 of the lower retainer 10 can be used to clamp the outer guide rod 5 and the middle guide rod 7, keeping the outer guide rod 5 and the middle guide rod 7 above the ground. The inner guide rod 6 can be lowered by the traction of the traction member 4, the gravity of the vibratory compactor 3, and its own weight, so that the inner guide rod 6 extends relative to the middle guide rod 7. The vibratory compactor 3 at the front end of the inner guide rod 6 then enters the formation to vibrate and compact the hole. When the inner guide rod 6 is fully extended relative to the middle guide rod 7, a pair of semi-ring keys 13 can be installed in the annular groove 12 at the upper end of the inner guide rod 6. The annular sleeve 14 is used to radially constrain the semi-ring keys 13. The semi-ring keys 13 can clamp the inner guide rod 6 and the middle guide rod 7, so that the inner guide rod 6 and the middle guide rod 7 achieve axial surface contact and reverse limiting.

[0093] Then, by adjusting the size of the clamping part 11 of the lower retainer 10, the intermediate guide rod 7 can pass through the clamping part 11, while the outer guide rod 5 remains on the ground. The intermediate guide rod 7, together with the inner guide rod 6, descends with the help of the traction of the traction member 4, the gravity of the vibratory impactor 3, and its own weight, so that the intermediate guide rod 7 extends relative to the outer guide rod 5. The inner guide rod 6, which has been connected to the intermediate guide rod 7, drives the vibratory impactor 3 at the front end to continue vibrating and punching to create a hole. When the intermediate guide rod 7 is fully extended relative to the outer guide rod 5, a pair of semi-ring keys 13 can be installed in the annular groove 12 at the upper end of the intermediate guide rod 7, and the semi-ring keys 13 are radially constrained by the annular sleeve 14. The semi-ring keys 13 can clamp the outer guide rod 5 and the intermediate guide rod 7 so that the outer guide rod 5 and the intermediate guide rod 7 achieve axial surface contact and reverse limiting.

[0094] Afterwards, the clamping part 11 of the lower retainer 10 can be fully opened so that the outer guide rod 5 can move downward through the clamping part 11. At this time, the outer guide rod 5, the middle guide rod 7 and the inner guide rod 6 are connected into an integral guide rod. With the help of the guide of the lower retainer 10 and the traction of the traction member 4, the integral guide rod can continue to descend and drive the front end vibratory punch 3 to continue vibrating and punching to the predetermined depth.

[0095] Finally, crushed stone 53 can be filled into the hole section by section, and the telescopic guide rod 1 can be retracted in reverse order of the above process, while the vibratory compactor 3 vibrates and compacts the crushed stone 53 while lifting it section by section until the construction of the ultra-deep vibratory compaction crushed stone pile at the pile position is completed. When retracting the telescopic guide rod 1, the annular sleeve 14 and the semi-annular key 13 need to be removed from the annular groove 12 to avoid affecting the retraction operation of the telescopic guide rod 1.

[0096] Furthermore, the telescopic guide rod 1 provided by the present invention has a rigid connection between each section of the guide rod, which can resist the reverse resistance during the process of the vibratory compactor 3 making holes and compacting the crushed stone material 53, and has the function of self-vibratory compaction to form holes. Moreover, the rigid connection here is a surface contact connection limit composed of a semi-ring key 13 and an annular groove 12, which has low contact stress, reliable and convenient use, strong impact resistance, and long service life. In addition, the connection operation of each section of the guide rod is carried out on the ground, which is convenient for operators to control and adjust.

[0097] In summary, the ultra-deep vibratory compaction stone pile drilling rig provided by this invention can effectively improve the vibratory compaction hole-forming effect of the vibratory compactor 3. It has the advantages of conforming to the construction mechanism of vibratory compaction, being able to withstand the reverse force of vibratory compaction operation and having a long impact resistance life, being able to prevent the telescopic guide rod from rotating, being able to achieve reliable physical full sealing and being easy to replace and maintain, not requiring large lifting equipment, having high efficiency, good quality and low overall cost.

[0098] Based on the above embodiments, preferably, the outer guide rod 5 includes an outer main sleeve 15, an outer upper flange 16 located at the upper end of the outer main sleeve 15, and an outer lower connector 17 located at the lower end of the outer main sleeve 15, with the outer upper flange 16 connected to the upper retainer 9; the middle guide rod 7 includes a middle main sleeve 18, a middle upper connector 19 located at the upper end of the middle main sleeve 18, and a middle lower connector 20 located at the lower end of the middle main sleeve 18; the inner guide rod 6 includes an inner main sleeve 21, an inner upper connector 22 located at the upper end of the inner main sleeve 21, and an inner lower connector 23 located at the lower end of the inner main sleeve 21.

[0099] The outer periphery of the upper middle connector 19 is provided with a middle positioning device 24. The middle positioning device 24 includes a middle positioning block A 25 with a middle keyway, a middle positioning block B 26 for reducing the gap between the middle guide rod 7 and the outer guide rod 5, a middle support sleeve 27, and a middle locking nut 28. The middle locking nut 28 is used to lock the middle positioning block A 25 and the middle positioning block B 26 on the outer periphery of the middle support sleeve 27. The outer main sleeve 15 is provided with an outer key strip 29 that engages with the middle keyway.

[0100] The outer periphery of the inner upper connector 22 is provided with an inner positioning device 30. The inner positioning device 30 includes an inner positioning block A 31 with an inner keyway, an inner positioning block B 32 for reducing the gap between the intermediate guide rod 7 and the inner guide rod 6, an inner support sleeve 33, and an inner locking nut 34. The inner locking nut 34 is used to lock the inner positioning block A 31 and the inner positioning block B 32 on the outer periphery of the inner support sleeve 33. The middle main sleeve 18 is provided with a middle key strip 52 that engages with the inner keyway.

[0101] It should be noted that the outer upper flange 16 can be connected to the upper retainer 9, which can move along the column 8, by means of bolts 51. When it is necessary to control the inner guide rod 6 to extend downward, the size of the clamping part 11 can be adjusted so that the inner guide rod 6 can pass through the clamping part 11, while the outer guide rod 5 and the intermediate guide rod 7 cannot pass through the clamping part 11, so that the outer guide rod 5 and the intermediate guide rod 7 remain above the ground, and the inner guide rod 6 and the vibratory impactor 3 move downward.

[0102] When it is necessary to control the middle guide rod 7 to extend downwards, the size of the clamping part 11 can be adjusted so that the middle guide rod 7 can pass through the clamping part 11 while the outer guide rod 5 cannot pass through the clamping part 11, so that the outer guide rod 5 remains above the ground. When it is necessary to control the outer guide rod 5 to extend downwards, the clamping part 11 can be fully opened so that the outer guide rod 5 can pass through the clamping part 11. The outer guide rod 5 can then move vertically downwards along the column 8 under the action of the upper retainer 9 and the guide sleeve 45. At the same time, the upper retainer 9 and the lower retainer 10 can both move downwards with the outer guide rod 5 until they move to their respective preset positions and are locked in place. At this time, the outer guide rod 5 is in a fully extended downward state.

[0103] Additionally, it should be noted that the middle positioning block B 26 reduces the gap between the middle guide rod 7 and the outer guide rod 5 to prevent wobbling during relative extension and retraction. Furthermore, the middle positioning block A 25 and the keyway prevent relative rotation between the outer guide rod 5 and the middle guide rod 7 during extension and retraction. The inner positioning block B 32 reduces the gap between the middle guide rod 7 and the inner guide rod 6 to prevent wobbling during relative extension and retraction. Furthermore, the inner positioning block A 31 and the inner keyway prevent relative rotation between the inner guide rod 6 and the middle guide rod 7 during extension and retraction.

[0104] It should be further explained that, in order to ensure the normal operation of the vibratory compactor 3, components such as the wire rope 37, cable 48, and water vapor pipe connected to the vibratory compactor 3 need to be inserted into the inner guide rod 6. Because this device has a positioning device between each section of the guide rod, the sections of the guide rod will not rotate relative to each other under the horizontal excitation force of the vibratory compactor 3, thus preventing the wire rope 37, cable 48, and water vapor pipe from becoming entangled, ensuring safe production. Moreover, the compact positioning device significantly reduces the required operating space, reducing the diameter difference between each section of the guide rod. Even when the hole is deep and the number of guide rod sections is large, the outer diameter of the guide rod will not be too large, which is beneficial for ensuring the smooth progress of vibratory compaction of stone pile hole drilling and filling operations.

[0105] In practical applications, the shape, structure, size, and material of the center positioning device 24, inner positioning device 30, outer key bar 29, and center key bar 52 can be determined according to the actual situation and needs.

[0106] Preferably, both the upper middle connector 19 and the upper inner connector 22 are provided with a sealing ring 35 and an annular groove 12 on their outer periphery. The sealing ring 35 is used to seal the annular groove 12 and can be positioned close to the annular groove 12.

[0107] It should be noted that each section of the telescopic guide rod 1 can be rigidly connected through an annular groove 12, a semi-annular key 13, and a circular sleeve 14 to resist the reverse resistance during the process of the vibratory compactor 3 creating holes and compacting the crushed stone 53. Each section of the guide rod can also be connected through a positioning device to resist the positive resistance during the process of the vibratory compactor 3 creating holes and compacting the crushed stone 53, so that the telescopic guide rod 1 still has the function of self-forced vibratory compaction after it is extended.

[0108] When the intermediate guide rod 7 is fully extended relative to the outer guide rod 5 and the inner guide rod 6 is fully extended relative to the intermediate guide rod 7, pairs of semi-ring keys 13 can be installed in the annular grooves 12 of the upper joints of the intermediate guide rod 7 and the inner guide rod 6, respectively. The semi-ring keys 13 are fixed by the annular sleeve 14. With the help of the semi-ring keys 13 and the annular sleeve 14, axial surface contact rigid reverse limiting can be achieved between the outer guide rod 5 and the intermediate guide rod 7, and between the intermediate guide rod 7 and the inner guide rod 6. With the help of the positioning device contacting the upper end face of the lower joint, axial surface contact rigid positive limiting can be achieved between the outer guide rod 5 and the intermediate guide rod 7, and between the intermediate guide rod 7 and the inner guide rod 6. Moreover, since the rigid connection of each guide rod refers to the connection and limiting by the combination of semi-ring keys 13 and positioning devices, it has the advantages of low contact stress, reliable and convenient use, strong impact resistance, and long service life.

[0109] Based on the above embodiments, preferably, the outer periphery of the lower outer connector 17 is provided with a circular sleeve 14 and a circular sleeve 14 for sealing the sealing ring 35. The circular sleeve 14 is detachably provided at the lower end of the lower outer connector 17, so that the sealing ring 35 can be placed close to the circular sleeve 14.

[0110] Preferably, the lower middle connector 20 has an annular sleeve 14 and a sealing ring 35 for sealing the annular sleeve 14 on its outer periphery. The annular sleeve 14 is detachably located at the lower end of the lower middle connector 20, and the sealing ring 35 can be positioned close to the annular sleeve 14.

[0111] It should be noted that when the middle guide rod 7 is fully extended relative to the outer guide rod 5 and the inner guide rod 6 is fully extended relative to the middle guide rod 7, a complete radial physical seal can be achieved between the outer guide rod 5 and the middle guide rod 7, and between the middle guide rod 7 and the inner guide rod 6, with the help of the sealing ring 35 and the annular sleeve 14.

[0112] It should also be noted that, because each section of the telescopic guide rod 1 achieves a complete physical seal, no soil or sand will intrude into the guide rod, ensuring smooth and unobstructed telescopic operation. Furthermore, the sealing structure, which uses a sealing ring 35 and a circular sleeve 14 mounted on the outer periphery, offers advantages such as ease of manufacturing and quick and convenient installation. When the sealing ring 35 wears down and fails, requiring replacement, it can be replaced sequentially from below the telescopic guide rod 1 without disassembling the guide rod sections or removing the wire rope 37, cable 48, or water pipe. This simplifies the replacement and maintenance process and significantly improves efficiency.

[0113] Based on the above embodiments, preferably, the traction component 4 includes a winch 36 mounted on the pile frame 2 and a wire rope 37 connected to the winch 36. The inner lower joint 23 and the transition joint 38 of the vibratory compactor 3 are detachably connected. The transition joint 38 is provided with a lifting lug 39, which is detachably connected to the wire rope 37. The lifting lug 39 can be connected to the wire rope 37 via a pin 47. When the winch 36 rotates, the extension and retraction of the wire rope 37 can be controlled to realize the extension and retraction operation of the vibratory compactor 3 and the telescopic guide rod 1.

[0114] Preferably, it also includes a traveling chassis 40, a cable reel 41, a water and gas pipe reel 42, and a gooseneck frame 43 located at the bottom of the pile frame 2. The cable reel 41 and the water and gas pipe reel 42 are both located on the pile frame 2, and the gooseneck frame 43 is located at the top of the pile frame 2. The cable 48 of the cable reel 41 and the water and gas pipe 49 of the water and gas pipe reel 42 are both connected to the vibratory compactor 3 by passing through the inner guide rod 6 through the gooseneck frame 43.

[0115] Preferably, both the cable 48 and the water / gas pipe 49 are fixedly sealed to the transition joint 38 by the fixed spacer 44 to prevent gravel from entering the guide rod during construction and affecting the normal operation of the vibratory compactor 3.

[0116] It should be noted that the telescopic guide rod 1 is lowered layer by layer under the action of the wire rope 37. At the same time, the cable 48 and the water and gas pipe 49 can also be lowered synchronously. The vibratory compactor 3 can use the electricity, clean water and gas supplied by the cable 48 and the water and gas pipe 49 that are lowered synchronously to continuously vibrate downwards, forming an ultra-deep vibratory compaction stone pile hole. The traveling chassis 40 set at the bottom of the pile frame 2 can easily realize the movement operation of the pile frame 2.

[0117] In practical applications, the shape, structure, size, and material of the winch 36, wire rope 37, traveling chassis 40, cable reel 41, water and gas pipe reel 42, and gooseneck frame 43 can be determined according to the actual situation and needs.

[0118] Furthermore, it should be noted that when using the telescopic guide rod 1 and vibratory compactor 3 provided by this device, operations such as vibratory compaction for hole drilling, hole cleaning, filling, and pile compaction can be performed sequentially, fully conforming to the mechanism and construction process of the vibratory compaction method. Moreover, during construction, the sealing and rigid connection operations between each section of the telescopic guide rod 1 are all carried out above ground, making the operation more convenient and safer. While ensuring the quality of the vibratory compacted stone pile, no additional auxiliary equipment is required, effectively reducing costs and improving construction efficiency.

[0119] Based on the above embodiments, preferably, when the heights of the intermediate guide rod 7, inner guide rod 6, and outer guide rod 5 are unequal, the number of intermediate guide rods 7 is a positive integer N, where N is greater than or equal to 1; the height of the inner guide rod 6 is H1; the height of the outer guide rod 5 is H2; the height of the intermediate guide rod 7 is H3; the total height L of the pile frame 2 is greater than or equal to the sum of max(H1, H2, H3) and the preset space A of the vibratory compactor 3; and the drilling depth Hk of the pile frame 2 is H1 + H2 + N * H3 + A. Wherein, the preset space A of the vibratory compactor 3 includes the height of the vibratory compactor 3 and the adjustment space of the vibratory compactor 3.

[0120] Based on the above embodiments, preferably, when the heights of the intermediate guide rod 7, inner guide rod 6, and outer guide rod 5 are equal, the number of intermediate guide rods 7 is a positive integer N, where N is greater than or equal to 1; the number of sections of the telescopic guide rod 1 is N+2; the total height L of the pile frame 2 is greater than or equal to the sum of H and the preset space A of the vibratory compactor 3; and the drilling depth Hk of the pile frame 2 is (N+2)*H+A. Wherein, the preset space A of the vibratory compactor 3 includes the height of the vibratory compactor 3 and the adjustment space of the vibratory compactor 3.

[0121] It should be noted that, in practical applications, two or more intermediate guide rods 7 can be configured according to the design depth of the deep crushed stone pile to meet the overall length requirements. That is, the telescopic guide rod 1 provided in this application can not only be used in the construction of ultra-deep crushed stone piles using the vibratory compaction method, but also can be widely used in the construction of ultra-deep piles using other construction methods. The total height L of the pile frame 2 is also the total height L of the equipment required to lift the vibratory compactor 3 guide rod, which is approximately the quotient of the drilling depth Hk and the number of telescopic guide rod sections N+2, plus the height of the vibratory compactor and the height of the adjustment space A, i.e., L≈Hk / (N+2)+A. For example, using a three-section telescopic guide rod 1 (i.e., a telescopic guide rod 1 including only one intermediate guide rod 7) for the construction of a 90-meter ultra-deep crushed stone pile, the total height of the lifting equipment is only around 30 meters. Compared to the large lifting equipment required for 90 meters or more in traditional methods, this effectively reduces equipment height and cost, and significantly improves operational safety.

[0122] In addition to the aforementioned ultra-deep vibratory compaction stone pile drilling rig, this invention also provides a construction method applicable to any of the aforementioned ultra-deep vibratory compaction stone pile drilling rigs. The construction method includes:

[0123] S1, control the inner guide rod 6 to extend downward relative to the middle guide rod 7, and the vibratory impactor 3 located at the front end of the inner guide rod 6 enters the formation to vibrate and impact the hole.

[0124] S2, when the inner guide rod 6 is fully extended relative to the middle guide rod 7, a pair of semi-ring keys 13 are installed in the annular groove 12 at the upper end of the inner guide rod 6, and the semi-ring keys 13 are radially fixed by the annular sleeve 14.

[0125] S3, control the middle guide rod 7 to extend downward relative to the outer guide rod 5, and the vibratory punch 3 continues to vibrate and punch to create holes;

[0126] S4, when the middle guide rod 7 is fully extended relative to the outer guide rod 5, a pair of semi-ring keys 13 are installed in the annular groove 12 at the upper end of the middle guide rod 7, and the semi-ring keys 13 are radially fixed by the annular sleeve 14.

[0127] S5, control the outer guide rod 5 to extend downward relative to the clamping part 11 until the vibratory punch 3 vibrates and punches the hole to the predetermined depth;

[0128] S6, gradually fill the hole with crushed stone material 53, and retract the telescopic guide rod 1 in reverse order of the above steps, while driving the vibratory compactor 3 to vibrate and compact the crushed stone material 53 while lifting it in sections until the construction of the ultra-deep vibratory compaction crushed stone pile at this pile position is completed.

[0129] Therefore, when it is necessary to operate the ultra-deep vibratory compaction stone pile drilling rig provided by this invention, it is only necessary to move the ultra-deep vibratory compaction stone pile drilling rig to the pile position, such as... Figure 13As shown. With the help of the traction of the wire rope 37 and the clamping adjustment of the clamping part 11, the inner guide rod 6 and the middle guide rod 7 extend in sequence and descend together with the outer guide rod 5 under their own weight. When the vibratory compactor 3 at the front end of the telescopic guide rod 1 enters the stratum to vibrate and compact the hole to the designed depth, the crushed stone material 53 can be filled in sections. Then, with the help of the lifting of the wire rope 37, the inner guide rod 6 and the middle guide rod 7 retract in sequence and are lifted together with the outer guide rod 5. At the same time, the vibratory compactor 3 at the front end of the telescopic guide rod 1 rises while vibrating and compacting the crushed stone filling material until the ultra-deep crushed stone pile construction operation is completed.

[0130] To further illustrate the ultra-deep vibratory compaction stone pile drilling rig and its construction method provided by this invention, the construction process of the ultra-deep vibratory compaction stone pile drilling rig will be illustrated with examples below.

[0131] First, the clamping part 11 of the lower retainer 10 is used for clamping and limiting, so that the outer guide rod 5 and the middle guide rod 7 remain above the ground. The inner guide rod 6 is pulled down by its own weight by the steel wire rope 37 and extends relative to the middle guide rod 7. The vibratory impactor 3 at the front end of the inner guide rod 6 then enters the formation to vibrate and create a hole. When the inner guide rod 6 is fully extended relative to the middle guide rod 7, the inner positioning device 30 of the inner guide rod 6 contacts the upper end face of the lower middle joint 20 of the middle guide rod 7, so that the inner guide rod 6 and the middle guide rod 7 achieve axial surface contact and positive limiting. A pair of semi-ring keys 13 are installed in the annular groove 12 of the inner upper joint 22 of the inner guide rod 6, and radial constraint is achieved by the ring sleeve 14. The ring sleeve 14 can be fixed to the middle guide rod 7 by the fastener 46, and the sealing ring 35 is used to achieve axial surface contact and reverse limiting and complete radial physical sealing between the inner guide rod 6 and the middle guide rod 7. Figure 14 As shown.

[0132] Afterwards, the clamping part 11 of the lower retainer 10 can be used for clamping and limiting. The outer guide rod 5 remains on the ground. The middle guide rod 7, together with the inner guide rod 6, descends by its own weight with the traction of the wire rope 37, extending relative to the outer guide rod 5. The inner guide rod 6, which is connected to the middle guide rod 7, drives the front end vibratory punch 3 to continue vibrating and punching to create a hole. When the middle guide rod 7 is fully extended relative to the outer guide rod 5, the middle positioning device 24 of the middle guide rod 7 contacts the upper end face of the outer lower joint 17 of the outer guide rod 5, so that the middle guide rod 7 and the outer guide rod 5 achieve axial surface contact and positive limiting. A pair of semi-ring keys 13 are installed in the annular groove 12 of the middle upper joint 19 of the middle guide rod 7, and radial constraint is achieved by the ring sleeve 14. The ring sleeve 14 can be fixed to the outer guide rod 5 with the fastener 46, so that the middle guide rod 7 and the outer guide rod 5 achieve axial surface contact and reverse limiting and complete radial physical sealing. Figure 15 As shown.

[0133] Then, the clamping part 11 of the lower retainer 10 can be opened. At this time, with the guidance of the lower retainer 10 and the traction of the wire rope 37, the outer guide rod 5, the middle guide rod 7, and the inner guide rod 6, which are connected as a whole, continue to descend, and drive the vibratory punch 3 at the front end of the telescopic guide rod 1 to continue vibrating and punching to the predetermined depth, such as... Figure 16 As shown.

[0134] Finally, crushed stone 53 can be filled into the hole section by section, and the telescopic guide rod 1 can be retracted in sequence according to the reverse steps above, driving the vibratory compactor 3 to vibrate and compact the crushed stone 53 while lifting it section by section until the construction of the ultra-deep vibratory compaction crushed stone pile at this pile position is completed. Figures 17 to 20 As shown.

[0135] By using the ultra-deep vibratory compaction stone pile drilling rig provided by this invention, the following beneficial effects can be obtained:

[0136] 1. Each section of the telescopic guide rod 1 can be rigidly connected to resist the reverse and forward resistance during the process of the vibratory compactor 3 making holes and compacting crushed stone 53, and has the function of self-vibratory compaction to form holes; moreover, the above-mentioned rigid connection adopts a combination of semi-ring key and positioning block surface contact connection limit, with low contact stress, reliable and convenient use, strong impact resistance and long service life.

[0137] 2. Because each section of the telescopic guide rod 1 achieves a complete physical seal, there will be no intrusion of soil or sand, ensuring smooth telescopic movement without obstruction. Moreover, the sealing structure using an outer diameter-mounted sealing ring 35 and a circular sleeve 14 is easy to manufacture and quick to install. When the sealing ring 35 is worn and needs to be replaced, there is no need to disassemble the guide rod or pull out the wire rope 37, cable 48, and water / air pipe 49. The seal can be replaced sequentially from below the telescopic guide rod 1, making the replacement and maintenance of the seal simple and easy, and greatly improving work efficiency.

[0138] 3. Each section of the telescopic guide rod 1 can extend and retract without relative rotation. It will not rotate under the horizontal excitation force of the vibratory compactor 3, and there will be no entanglement of the traction wire rope 37, cable 48 and water and gas pipe 49, which can ensure safe production. Moreover, due to the use of a compact positioning device, the required operating space is greatly reduced, and the diameter difference between each section of the guide rod is reduced. When the hole is deep and there are many sections of the guide rod, the outer diameter of the guide rod will not be too large, which is beneficial to the drilling and filling operations of vibratory compaction stone piles.

[0139] 4. The total height of the equipment required to lift the vibratory compactor guide rod is approximately the ratio of the hole depth to the number of sections of the vibratory compactor guide rod. For example, when using a three-section vibratory compactor guide rod to construct a 90m pile, the total height of the lifting equipment is only around 30m. This significantly reduces the height and cost compared to traditional methods that require large lifting equipment of 90m or more, while greatly improving safety.

[0140] 5. The operation of vibratory compaction for hole drilling, hole cleaning, filling, and pile compaction fully complies with the mechanism and construction process of vibratory compaction. Moreover, during the construction process, the sealing and rigid connection between each section of the telescopic guide rod 1 are all carried out on the ground, which is convenient and safe. While ensuring the quality of the vibratory compacted stone pile, no additional auxiliary equipment is required, which reduces costs and improves construction efficiency.

[0141] In addition, it should be noted that the orientation or positional relationship indicated by "upper" and "lower" in this application is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the purpose of simplifying the description and making it easier to understand, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0142] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this invention is within the scope of protection of this invention and will not be elaborated upon here.

[0143] The above provides a detailed description of the ultra-deep vibratory compaction stone pile drilling rig and its construction method provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. An ultra-deep vibratory compaction stone pile drilling rig, comprising: The structure includes a telescopic guide rod (1), a pile frame (2), a vibratory punch (3) for vibratory drilling, and a traction component (4) for driving the vibratory punch (3) to rise and fall. The telescopic guide rod (1) includes an outer guide rod (5), an inner guide rod (6), and an intermediate guide rod (7) slidably disposed between the outer guide rod (5) and the inner guide rod (6). The vibratory punch (3) is disposed at the front end of the inner guide rod (6). The traction component (4) can pass through the inner guide rod (6) and connect with the vibratory punch (3). The upper and lower ends of the column (8) of the pile frame (2) are respectively provided with a slidable upper retainer (9) and a lower retainer (10). The upper and lower ends of the outer guide rod (5) are respectively connected to the upper retainer (9) and the lower retainer (10). The lower retainer (10) is characterized by having an adjustable clamping part (11) for selectively clamping the outer guide rod (5), the inner guide rod (6), or the intermediate guide rod (7). The outer guide rod (5) and the inner guide rod (6) are both clearance-fitted with the intermediate guide rod (7). The upper outer periphery of the inner guide rod (6) and the intermediate guide rod (7) are provided with an annular groove (12). A pair of semi-ring keys (13) can be inserted into the annular groove (12). The outer periphery of the semi-ring key (13) is fitted with a circular ring sleeve (14). The semi-ring key (13) can clamp the inner guide rod (6) and the intermediate guide rod (7) or clamp the outer guide rod (5) and the intermediate guide rod (7). When it is necessary to control the inner guide rod (6) to extend downwards, adjust the size of the clamping part (11) so that the inner guide rod (6) passes through the clamping part (11), while the outer guide rod (5) and the intermediate guide rod (7) do not pass through the clamping part (11), so that the outer guide rod (5) and the intermediate guide rod (7) remain above the ground, and the inner guide rod (6) and the vibrator (3) move downwards; when it is necessary to control the intermediate guide rod (7) to extend downwards, adjust the clamping part (11) to extend downwards. The size of the part (11) is such that the middle guide rod (7) passes through the clamping part (11) and the outer guide rod (5) does not pass through the clamping part (11), so that the outer guide rod (5) remains above the ground; when it is necessary to control the outer guide rod (5) to extend downward, the clamping part (11) is fully opened so that the outer guide rod (5) passes through the clamping part (11) and the outer guide rod (5) moves vertically downward along the column (8) under the action of the upper retainer (9).

2. The ultra-deep vibratory compaction stone pile drilling rig according to claim 1, characterized in that, The outer guide rod (5) includes an outer main sleeve (15), an outer upper flange (16) located at the upper end of the outer main sleeve (15), and an outer lower connector (17) located at the lower end of the outer main sleeve (15). The outer upper flange (16) is connected to the upper retainer (9). The middle guide rod (7) includes a middle main sleeve (18), a middle upper connector (19) located at the upper end of the middle main sleeve (18), and a middle lower connector (20) located at the lower end of the middle main sleeve (18). The inner guide rod (6) includes an inner main sleeve (21), an inner upper connector (22) located at the upper end of the inner main sleeve (21), and an inner lower connector (23) located at the lower end of the inner main sleeve (21). The upper middle connector (19) is provided with a middle positioning device (24) on its outer periphery. The middle positioning device (24) includes a middle positioning block A (25) with a middle keyway, a middle positioning block B (26) for reducing the gap between the middle guide rod (7) and the outer guide rod (5), a middle support sleeve (27), and a middle locking nut (28). The middle locking nut (28) is used to lock the middle positioning block A (25) and the middle positioning block B (26) on the outer periphery of the middle support sleeve (27). The outer main sleeve (15) is provided with an outer key strip (29) that engages with the middle keyway. The outer periphery of the inner upper connector (22) is provided with an inner positioning device (30). The inner positioning device (30) includes an inner positioning block A (31) with an inner keyway, an inner positioning block B (32) for reducing the gap between the intermediate guide rod (7) and the inner guide rod (6), an inner support sleeve (33), and an inner locking nut (34). The inner locking nut (34) is used to lock the inner positioning block A (31) and the inner positioning block B (32) on the outer periphery of the inner support sleeve (33). The middle main sleeve (18) is provided with a middle key strip (52) that engages with the inner keyway.

3. The ultra-deep vibratory compaction stone pile drilling rig according to claim 2, characterized in that, The outer periphery of both the upper middle connector (19) and the inner upper connector (22) is provided with a sealing ring (35) and the annular groove (12), and the sealing ring (35) is used to seal the annular groove (12).

4. The ultra-deep vibratory compaction stone pile drilling rig according to claim 3, characterized in that, The outer periphery of the lower outer connector (17) is provided with the annular sleeve (14) and a sealing ring (35) for sealing the annular sleeve (14). The annular sleeve (14) is detachably located at the lower end of the lower outer connector (17).

5. The ultra-deep vibratory compaction stone pile drilling rig according to claim 4, characterized in that, The lower middle connector (20) is provided with the annular sleeve (14) and a sealing ring (35) for sealing the annular sleeve (14) on its outer periphery. The annular sleeve (14) is detachably located at the lower end of the lower middle connector (20).

6. The ultra-deep vibratory compaction stone pile drilling rig according to any one of claims 2 to 5, characterized in that, The traction component (4) includes a winch (36) mounted on the pile frame (2) and a wire rope (37) connected to the winch (36). The inner lower joint (23) and the transition joint (38) of the vibratory impactor (3) are detachably connected. The transition joint (38) is provided with a lifting lug (39), which is detachably connected to the wire rope (37).

7. The ultra-deep vibratory compaction stone pile drilling rig according to claim 6, characterized in that, It also includes a walking chassis (40), a cable reel (41), a water and gas pipe reel (42), and a goose head frame (43) located at the bottom of the pile frame (2). The cable reel (41) and the water and gas pipe reel (42) are both located on the pile frame (2), and the goose head frame (43) is located at the top of the pile frame (2). The cable (48) of the cable reel (41) and the water and gas pipe (49) of the water and gas pipe reel (42) are both connected to the vibratory impactor (3) by passing through the inner guide rod (6) through the goose head frame (43).

8. The ultra-deep vibratory compaction stone pile drilling rig according to any one of claims 1 to 5, characterized in that, The number of intermediate guide rods (7) is a positive integer N, where N is greater than or equal to 1. The height of the inner guide rod (6) is H1, the height of the outer guide rod (5) is H2, the height of the intermediate guide rod (7) is H3, the total height L of the pile frame (2) is greater than or equal to the sum of max(H1, H2, H3) and the preset space A of the vibratory compactor (3), and the hole-making depth Hk of the pile frame (2) is H1 + H2 + N * H3 + A.

9. The ultra-deep vibratory compaction stone pile drilling rig according to any one of claims 1 to 5, characterized in that, The number of intermediate guide rods (7) is a positive integer N, where N is greater than or equal to 1. The number of sections of the telescopic guide rod (1) is N+2. The total height L of the pile frame (2) is greater than or equal to the sum of H and the preset space A of the vibratory impactor (3). The drilling depth Hk of the pile frame (2) is (N+2)*H+A.

10. A construction method applied to the ultra-deep vibratory compaction stone pile drilling rig described in any one of claims 1-9, characterized in that, The construction method includes: The inner guide rod (6) extends downward relative to the middle guide rod (7), and the vibratory impactor (3) located at the front end of the inner guide rod (6) enters the formation to vibrate and impact the hole. When the inner guide rod (6) extends completely relative to the middle guide rod (7), a pair of semi-ring keys (13) are installed in the annular groove (12) at the upper end of the inner guide rod (6), and the semi-ring keys (13) are radially fixed by the annular sleeve (14). The intermediate guide rod (7) is controlled to extend downward relative to the outer guide rod (5), and the vibratory punch (3) continues to vibrate and punch to create holes; When the intermediate guide rod (7) extends completely relative to the outer guide rod (5), a pair of semi-ring keys (13) are installed in the annular groove (12) at the upper end of the intermediate guide rod (7), and the semi-ring keys (13) are radially fixed by the annular sleeve (14). Control the outer guide rod (5) to extend downward relative to the clamping part (11) until the vibratory punch (3) vibrates and punches the hole to the predetermined depth; The crushed stone material (53) is filled into the hole section by section. The telescopic guide rod (1) is retracted in sequence according to the reverse steps of the above steps, and the vibratory compactor (3) is driven to vibrate and compact the crushed stone material (53) while lifting it section by section until the construction of the ultra-deep vibratory compaction crushed stone pile at the pile position is completed.

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