Method for controlling the verticality of a vibroflotation stone column machine

Abstract

The application discloses a method for controlling the verticality of a vibroflotation stone pile machine, which comprises the following steps: arranging a drill rod system in parallel with a mast of a hoisting system, so that a vibroflotation system connected with the bottom of the drill rod system is parallel with the mast; detecting the verticality of the mast relative to a main machine on a horizontal plane in real time when the vibroflotation system is used for vibroflotation construction, so as to obtain deviation data of the verticality of the mast; judging whether the verticality of the mast needs to be adjusted according to the real-time deviation data of the verticality of the mast; and adjusting the verticality of the mast if the verticality of the mast needs to be adjusted, so that the vibroflotation system can be used to vibroflotation downward to a construction stratum and form a vibroflotation stone pile hole with a required verticality. According to the method, the vibroflotation system can form a vibroflotation stone pile hole with a required verticality, the uniformity and compactness of a formed vibroflotation stone pile hole are ensured, the safety of the vibroflotation stone pile is improved, the construction period is effectively shortened, and the construction cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of pile driver construction technology, and in particular to a method for controlling the verticality of vibratory stone crushing pile drivers. Background Technology

[0002] In traditional vibro-compaction engineering, the vibro-compactor is typically suspended by lifting equipment and driven to the required design depth. The lifting tonnage and height of the lifting equipment are determined based on the design depth. Commonly used lifting equipment includes truck cranes, pile frames, and crawler cranes. In traditional vibro-compaction construction using lifting equipment, the upper part of the guide rod connected to the top of the vibro-compactor is connected to the lifting equipment via a winch, which is a flexible connection. When the vibro-compactor is suspended, it and the guide rod are vertical due to gravity, without any horizontal constraint. During vibro-compaction, maintaining the suspension of the vibro-compactor relies on the operator's personal skill and responsibility. While the verticality is acceptable when encountering relatively soft layers, it is prone to deflection when encountering relatively hard layers or large gravel. At this point, the vibro-compactor can no longer maintain its suspension, and continued vibro-compaction easily leads to pile hole deviation, severely affecting project quality and progress. To solve this problem, in engineering practice, the following two steps are sometimes followed:

[0003] First, the operator immediately lifts the vibratory compactor, then gently taps and lifts it, gradually breaking through the hard layer or squeezing the gravel to the edge of the pile hole, allowing the vibratory compactor to continue drilling. This method is suitable for situations where the hard layer is relatively thin or the gravel is not very large, and it can basically solve the problem for relatively homogeneous strata within a conventional depth of 20m. However, for vibratory compaction of gravel piles in complex strata exceeding 50m, this method is often ineffective at the interface where the upper layer is soft and the lower layer is hard with a large amount of large-diameter gravel. When the vibratory compactor encounters a hard layer, especially large gravel, a "side slip" phenomenon often occurs at the bottom, which is one of the key reasons for pile hole deviation. Minor deviation affects work efficiency, while severe deviation can lead to the abandonment of the entire pile, significantly impacting both quality and schedule. For example, in one project, a method of using a guide rod and vibratory compactor to forcefully break through the layer at a high position caused serious damage to the equipment and resulted in multiple instances of severe deviation.

[0004] Secondly, if the above methods fail, the vibratory compaction pile driver can be removed and replaced with a rotary drilling rig to enlarge the hole and remove the gravel or hard layer. Alternatively, an impact drill can be used to drill through or break the hard layer before vibratory compaction. However, this method increases construction costs and affects the construction schedule.

[0005] Furthermore, existing technologies can employ a multi-section telescopic guide rod connected to a vibratory compactor for vibratory compaction when constructing holes exceeding 50 meters in depth in softer soil. Because the telescopic guide rod system uses a rigid connection, the guide rod + vibratory compactor system remains vertical even in softer soil layers, thus preventing pile hole deviation caused by lateral slippage. However, when encountering hard layers, especially large gravel, the vibratory compactor with the above structure inevitably experiences lateral slippage, leading to pile hole deviation. If the deviation is minor, and the inclined pile hole is not corrected, the uniformity of the vibratory compaction pile diameter and the guarantee coefficient of compaction will be affected, resulting in poor safety of the subsequently formed vibratory compaction pile. If the inclined pile hole is corrected, the vibratory compactor must be stopped for timely hole repair, inevitably extending the construction period and increasing construction costs. If the deviation is severe, the entire pile must be abandoned, seriously affecting construction progress and costs.

[0006] In summary, ensuring the verticality of the vibratory compactor is an urgent problem to be solved when conducting vibratory compaction in hard strata, especially those with large gravels, with a borehole depth exceeding 50 meters. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned problems and provide a method for controlling the verticality of vibratory stone crushing pile construction, so that the vibratory compactor system can vibrate the construction stratum downward with the required verticality to form vibratory stone crushing pile holes, ensuring the uniformity and compactness of the formed vibratory stone crushing pile diameter, improving the safety of vibratory stone crushing piles, and effectively shortening the construction period and reducing construction costs.

[0008] To achieve the above-mentioned objectives of this invention, this invention provides a method for controlling the verticality of a vibratory stone crushing pile driver, wherein the vibratory stone crushing pile driver includes a hoisting system, a drill rod system, and a vibratory compactor system, and the method includes:

[0009] The drill pipe system and the hoisting system are positioned parallel to the mast so that the vibratory compactor system connected to the bottom of the drill pipe system is parallel to the mast.

[0010] During vibratory compaction using the vibratory compactor system, the verticality of the mast relative to the main unit on the horizontal plane is detected in real time to obtain deviation data of the mast's verticality.

[0011] Based on the real-time deviation data of the mast verticality, determine whether the mast verticality needs to be adjusted.

[0012] If the verticality of the mast needs to be adjusted, adjust the verticality of the mast so that the vibratory compactor system can vibrate downwards into the construction stratum and form vibratory crushing pile holes with the required verticality.

[0013] Among these measures, the verticality of the mast relative to the main unit mounted on the horizontal plane is monitored in real time to obtain deviation data of the mast's verticality, including:

[0014] The tilt angle of the mast relative to the main unit, which is mounted on a horizontal plane, is obtained by real-time detection.

[0015] After obtaining the tilt angle of the mast relative to the main unit, subtract 90 degrees from this angle to obtain the verticality deviation value of the mast relative to the main unit.

[0016] Alternatively, the verticality of the mast relative to the main unit mounted on the horizontal plane can be monitored in real time to obtain deviation data of the mast's verticality, including:

[0017] The tilt angle of the mast relative to the main unit, which is mounted on a horizontal plane, is obtained by real-time detection.

[0018] After obtaining the tilt angle of the mast relative to the main unit, subtract 90 degrees from this angle and take the absolute value to obtain the absolute value of the verticality deviation of the mast relative to the main unit.

[0019] The process of determining whether mast verticality adjustment is necessary based on the obtained real-time deviation data includes:

[0020] After obtaining the real-time deviation data of the mast verticality, determine whether the deviation data is within the preset threshold range;

[0021] If the deviation data exceeds the preset threshold range, the mast verticality needs to be adjusted.

[0022] If the deviation data does not exceed the preset threshold range, there is no need to adjust the mast verticality.

[0023] Preferably, if it is necessary to adjust the mast's verticality, adjusting the mast's verticality to meet the requirements includes:

[0024] When it is necessary to adjust the verticality of the mast, the vibratory compactor system stops vibratory compaction and is lifted up by the hoisting system.

[0025] After the vibratory impactor system is raised, the mast angle adjustment mechanism is controlled to perform corresponding actions to adjust the mast verticality to meet the requirements.

[0026] Preferably, controlling the mast angle adjustment mechanism to perform corresponding actions to adjust the mast verticality to meet the requirements includes:

[0027] By controlling the opening of the proportional valve used for correction, the correction cylinder connected to the proportional valve is controlled to perform the corresponding action.

[0028] The action of the correction cylinder causes the mast, which is connected to the correction cylinder, to deflect relative to the main unit, so that the mast's verticality meets the requirements.

[0029] Preferably, the drill pipe system is positioned parallel to the mast of the hoisting system, such that the vibratory compactor system connected to the bottom of the drill pipe system is parallel to the mast, including:

[0030] During the process of lowering the drill pipe system and vibratory compactor system using the hoisting system, the verticality of the drill pipe system relative to the main machine is controlled so that the vibratory compactor system lowered with the drill pipe system is parallel to the mast.

[0031] Preferably, the verticality of the drill pipe system is controlled by applying horizontal constraint force and vertical guiding force to the drill pipe system.

[0032] Preferably, applying horizontal constraint force and vertical guiding force to the drill pipe system means applying horizontal constraint force and vertical guiding force to the connecting section of the drill pipe system.

[0033] Preferably, applying horizontal constraint force and vertical guiding force to the connecting section of the drill pipe system is done by using a drill pipe verticality maintaining device to apply horizontal constraint force and vertical guiding force to the connecting section.

[0034] The method for real-time verticality detection involves installing an angle detection module on the mast to measure verticality in real time.

[0035] Preferably, the angle detection module is installed inside the mast and near the lower end of the mast.

[0036] Preferably, the angle detection module is installed at the lower 1 / 5 position inside the mast.

[0037] Compared with existing technologies, the method for controlling the verticality of vibratory compaction stone pile construction of the present invention has the following advantages:

[0038] The present invention relates to a method for controlling the verticality of vibratory compaction stone pile construction. During vibratory compaction construction of deep and complex foundations exceeding 50 meters in depth in earthquake-prone areas, the verticality of the mast exceeding the required verticality can be adjusted in a timely manner. This allows the vibratory compaction system to vibrate downwards through the construction strata with the required verticality, forming vibratory compaction stone pile holes. This ensures the uniformity and compaction of the formed vibratory compaction stone pile diameter, improves the safety of the vibratory compaction stone pile, and effectively shortens the construction period and reduces construction costs.

[0039] The present invention will now be described in detail with reference to the accompanying drawings. Attached Figure Description

[0040] Figure 1 This is a perspective view of the vibratory stone crushing pile machine of the present invention from one angle;

[0041] Figure 2This is a perspective view of the vibratory stone crushing pile machine of the present invention from another angle;

[0042] Figure 3 This is a partially enlarged view of the clamping connection section of the drill pipe verticality maintaining device of the present invention;

[0043] Figure 4 This is a schematic diagram of the first structure of the drill pipe verticality maintaining device of the present invention;

[0044] Figure 5 This is a schematic diagram of the second structure of the drill pipe verticality maintaining device of the present invention;

[0045] Figure 6 This is a schematic diagram of the drill pipe system of the present invention;

[0046] Figure 7 This is a partial schematic diagram of the drill pipe system of the present invention;

[0047] Figure 8 This is a schematic diagram of the connection between the working section of the drill pipe system and the vibratory compactor system of the present invention;

[0048] Figure 9 This is a first schematic block diagram illustrating the verticality adjustment principle of the present invention;

[0049] Figure 10 This is a second schematic block diagram illustrating the verticality adjustment principle of the present invention;

[0050] Figure 11 This is a schematic block diagram of the mast verticality maintaining device of the present invention;

[0051] Figure 12 This is a schematic block diagram of the verticality detection mechanism of the present invention;

[0052] Figure 13 This is a flowchart of the vertical holding system of the vibratory compactor in the vibratory stone crushing pile machine of the present invention. Detailed Implementation

[0053] like Figure 1 , Figure 2 The figures show perspective views from two different angles of the vibratory compaction stone pile machine provided by the present invention. As can be seen from the figures, the vibratory compaction stone pile machine of the present invention includes a hoisting system 100, a drill rod system 200, a vibratory compactor system 400, and an automatic feeding system 500. In addition, it also includes a vibratory compactor vertical holding system 300 for ensuring that the vibratory compactor performs vibratory compaction with the required verticality.

[0054] Specifically, the hoisting system 100 includes the main unit 101 of the vibratory crushing stone pile machine, the mast 102 connected to the main unit, and the main winch 501 installed at the rear end of the main unit 101. The drill rod system 200 is hoisted by the wire rope of the main winch 501 and the mast 102 so that the drill rod system is vertically positioned under its own weight.

[0055] In addition, an automatic feeding system 500 is installed on the main unit 101. This automatic feeding system is installed at the rear of the main unit 101 of the hoisting system 100 and can be used as a counterweight for the main unit 101. The automatic feeding system 500 includes a pneumatic hoisting device 502, a cable hoisting device 503, and a water pipe hoisting device 504, and these three devices are configured to feed synchronously with the main hoisting device 501.

[0056] The drill pipe system 200 has an upper connecting section 201 for connecting to the wire rope of the main winch 501, a middle support section 202, and a lower working section 203 for connecting to the vibratory compactor system 400 (typically, such as...). Figure 8 As shown, a shock-absorbing assembly is installed between the working section 203 and the vibratory compactor system 400. The drill pipe system 200 employs a telescopic guide rod of existing technology, allowing the axial length of the drill pipe system 200 to be adjusted to change the lowering or raising position of the vibratory compactor system relative to the ground. Figure 6 , Figure 7 As shown, the drill pipe system 200 has multiple layers of casing sequentially nested from the inside out. The connecting section 201 is the top layer casing, the working section 203 is the bottom layer casing, and the support section 202 includes one or more intermediate casings. Adjacent casing layers can be connected using existing connection structures, allowing for smooth axial sliding of adjacent layers while preventing torsion. During operation, the number and length of the multiple casing layers in the drill pipe system can be determined according to usage requirements; for example, more than four layers of casing can be used, with each layer being 18-25 meters long (the top layer casing can be even longer). In use, the length of the multiple casing layers in the drill pipe system can be extended or shortened. When all the multiple casing layers of the telescopic guide rod are extended, the total length of the telescopic guide rod can reach 72 meters or even longer. Therefore, the vibratory compaction stone-breaking pile machine of this invention can be used for vibratory compaction drilling in strata deeper than 50 meters. It should be noted that the coaxiality is the same when connecting any two adjacent layers of casing. That is, the multiple layers of casing are coaxial after being extended, so that each layer of casing is perpendicular to the pile hole during vibro-compaction construction.

[0057] In the process of vibratory compaction drilling in complex strata of strong seismic zones with a depth greater than 50 meters, the vibratory compactor of the 200 system is prone to deflection during vibration if it encounters hard strata, as it operates in an environment of gravel, sand, and mud. This deflection will lead to construction failure and huge losses.

[0058] To prevent the vibratory compactor from tilting during the vibratory compaction process, this invention places the drill rod system and the mast of the hoisting system parallel to each other. This ensures that the vibratory compactor system, connected to the bottom of the drill rod system, is parallel to the mast. By ensuring the verticality of the mast, the verticality of the vibratory compactor system is also ensured. During vibratory compaction drilling, the verticality of the mast relative to the main unit on the horizontal plane is monitored in real time, and the verticality of the mast is adjusted accordingly based on the monitoring results to ensure that the verticality of the mast meets the requirements. This allows the vibratory compactor, placed parallel to the mast, to vibrate downwards into the working stratum with the required verticality and form vibratory compacted stone pile holes.

[0059] Specifically, the present invention ensures that the vibratory compactor can vibrate downwards into the construction stratum with the required verticality through the vibratory compactor vertical holding system 300 to form vibratory crushed stone pile holes.

[0060] like Figures 1-5 As shown, the vibratory compactor vertical holding system 300 of the present invention includes: a mast verticality holding device for ensuring that the verticality of the mast relative to the host machine located on the horizontal plane meets the requirements during vibratory compactor hole drilling, so that the vibratory compactor can vibrate downwards to the construction stratum to form a vibratory crushed stone pile hole with the required verticality; and a drill rod verticality holding device for ensuring that the mast of the drill rod system and the hoisting system are arranged parallel to each other, so that the vibratory compactor system connected to the bottom of the drill rod system is parallel to the mast.

[0061] Among them, such as Figure 11 As shown, the mast verticality maintaining device includes: a verticality detection mechanism for real-time detection and processing of the verticality of the mast relative to the host machine located on the horizontal plane during vibratory drilling construction using a vibratory compactor; and a mast angle adjustment mechanism for adjusting the mast verticality according to the detection results of the verticality detection mechanism to ensure that the mast verticality meets the requirements.

[0062] The perpendicularity detection mechanism used in this invention is as follows: Figure 12 As shown, it includes the following modules: an inclination detection module that obtains the tilt angle of the mast relative to the host machine placed on the horizontal plane by real-time detection; a deviation data calculation module that calculates the deviation data of the mast's verticality (referred to as mast verticality) after obtaining the tilt angle of the mast relative to the host machine; a verticality comparison module that determines whether the mast verticality needs to be adjusted based on the obtained mast verticality deviation data; and a sending module that sends the comparison results to the controller so that the controller can control the mast angle adjustment mechanism to perform corresponding actions to adjust the mast verticality based on the comparison results.

[0063] The tilt detection module is housed inside the mast (not shown in the figure). Preferably, it is located within the lower 1 / 5 of the mast's interior to more accurately detect the mast's tilt angle. This tilt detection module can be a tilt sensor or other existing components capable of detecting tilt angle and processing the data.

[0064] Among them, the deviation data calculation module can be used as follows: Figure 9 The deviation data is obtained in the following manner: the tilt angle of the mast is obtained by detecting the verticality of the mast in real time through the tilt angle detection module, and then 90 degrees is subtracted from the tilt angle to obtain the verticality deviation value of the mast relative to the host.

[0065] Alternatively, the deviation data calculation module can also be used through, for example Figure 10 The deviation data is obtained in the following manner: the tilt angle of the mast is obtained by detecting the verticality of the mast in real time through the tilt angle detection module. Then, 90 degrees is subtracted from the tilt angle and the absolute value is taken to obtain the absolute value of the verticality deviation of the mast relative to the host.

[0066] After obtaining the mast verticality deviation data, a comparison module determines whether mast verticality adjustment is needed. This module compares the obtained mast verticality deviation data with a pre-set threshold range for mast verticality and obtains the corresponding comparison result. The comparison process is as follows: After obtaining the real-time deviation data of mast verticality, it is determined whether the deviation data is within the preset threshold range. If the deviation data exceeds the preset threshold range, the mast verticality needs to be adjusted, and the relevant information regarding the direction and magnitude of the adjustment is determined. If the deviation data does not exceed the preset threshold range, no adjustment of the mast verticality is needed. This preset threshold range represents the range of the maximum and minimum angles that the mast can tilt relative to the vertical plane. The above data processing is performed by a pre-stored program.

[0067] After obtaining the comparison result, the comparison module sends the result to the controller via the sending module. The controller then controls the mast angle adjustment mechanism to perform corresponding actions to adjust the mast's verticality based on the comparison result. Specifically, when the verticality detection mechanism indicates that the mast's verticality needs adjustment to meet requirements (i.e., the deviation data exceeds a preset threshold range), the controller will control the mast angle adjustment mechanism to perform the corresponding actions to adjust the mast's verticality to the required level. The controller is a PLC controller.

[0068] It should be noted that when the verticality of the mast needs to be adjusted, the controller first controls the vibratory compactor system to stop vibratory compaction, and then lifts the vibratory compactor system through the hoisting system. Then, it controls the mast angle adjustment mechanism to perform the corresponding action to adjust the verticality of the mast to meet the requirements.

[0069] The mast angle adjustment mechanism of this invention includes: a correction cylinder whose piston rod is connected to the mast, the cylinder body of which is mounted on the main unit; and a proportional valve connected to the correction cylinder. In design, the verticality of the mast can be adjusted using one correction cylinder, a pair of correction cylinders, or multiple pairs of correction cylinders. The proportional valve controls the action of the correction cylinder. The proportional valve is connected to a PLC controller, and the PLC controller uses feedback signals to control the opening size and direction of the proportional valve in a closed loop, thereby controlling the correction cylinder to adjust the tilt direction and magnitude of the mast, maintaining the mast's verticality within a preset threshold range.

[0070] Because the verticality of the mast meets the requirements, the vibratory compactor can be used to vibrate downwards into the stratum during the vibratory compaction drilling construction, thereby forming vibratory compaction stone pile holes that meet the verticality requirements.

[0071] In addition to ensuring the verticality of the mast meets requirements during vibratory compaction drilling, this invention also uses a drill rod verticality maintaining device to ensure the drill rod system and the mast of the hoisting system are parallel. This ensures that the vibratory compactor system connected to the bottom of the drill rod system is parallel to the mast, thus guaranteeing that the verticality of the vibratory compactor system always meets the requirements, provided that the mast is vertical, thereby enabling the construction of pile holes that meet the verticality requirements.

[0072] The drill pipe verticality maintaining device that applies horizontal constraint force and vertical guiding force to the drill pipe system includes: a support frame connected to the drill pipe system for applying horizontal constraint force and vertical guiding force to the connecting section of the drill pipe system; and a fixing frame connected to the support frame and the mast for fixing the support frame to the mast.

[0073] Specifically, the support frame can be adopted as follows: Figure 4The first structure shown includes a pair of vertically parallel columns 303, a horizontal frame 301 vertically connected to the top of the pair of columns 303 and extending to one side, and a pair of reinforcing columns 302 connected at both ends to the bottom surfaces of the pair of columns 303 and the horizontal frame 301, respectively. A circular through-hole is provided on the horizontal frame 301, which connects to the drill pipe system connection section 201. In the design, multiple slots 306 extending vertically can be provided on the inner wall of the circular through-hole. Correspondingly, multiple connecting ribs 204 extending along the length of the connection section are provided on the outer wall of the drill pipe system connection section 201. The slots 306 on the horizontal frame and the connecting ribs 204 on the outer wall of the connection section 201 are fitted together with a clearance fit, allowing the drill pipe system connection section to slide vertically up and down within the through-hole after passing through it. In this way, the lower part of the drill pipe system connecting section 201 passes through the upper through hole of the horizontal frame 301, and the connecting rib 204 on the outer wall of the connecting section is placed in the slot 306. Through the upper through hole and slot of the horizontal frame 301, a horizontal constraint force and a vertical guiding force are applied to the connecting section, thereby applying a certain rigid constraint to the connection of the connecting section, so that the drill pipe system is always parallel to the mast, and thus the vibratory compactor system connected to the drill pipe system is parallel to the mast. During the vibratory compaction construction of the vibratory compactor system, when the verticality of the mast meets the requirements through the drill pipe verticality maintaining device, the vibratory compactor system can vibrate to create a pile hole that meets the verticality requirements.

[0074] Of course, multiple connecting ribs extending vertically can also be provided on the inner wall of the circular through hole, and a slot (not shown in the figure) that cooperates with the multiple connecting ribs can be fixedly installed on the outer wall of the drill rod system connection section 201. By cooperating with the connecting ribs and the slot, the horizontal frame can apply a certain rigid constraint force to the connection section.

[0075] Furthermore, the support frame of the present invention can also adopt, for example... Figure 5 The second structure shown, based on the first structure, has additional guardrails 308 installed on both sides of the upper surface of the horizontal frame 301 near the edge, to provide safety protection for maintenance personnel when maintaining the drill pipe verticality maintenance device and the drill pipe system.

[0076] The horizontal frame 301 of the present invention can be an integral structure. Furthermore, to facilitate the connection of the drill pipe system's connecting section to the horizontal frame 301 and for maintenance, the horizontal frame 301 can also be configured as consisting of two parts (e.g., Figure 4 The structure shown has two parts, each with half a through hole. The two parts are connected together by a hinge and a latch 305 to form a complete circular through hole.

[0077] The fixed frame 307, which is connected to the support frame and the mast 102 respectively, has a vertical connecting frame that mates with the mast 102 and a pair of upper connecting ears and a pair of lower connecting ears that are fixedly connected to the upper and lower ends of the vertical connecting frame and are perpendicular to the vertical connecting frame. Correspondingly, a pair of upper connecting ears and a pair of lower connecting ears are also provided at the upper and lower ends of the support frame, respectively. Figure 4 As shown, a pair of upper connecting ears of the support frame are located on both sides of the horizontal frame 301 at the end away from the through hole, and a pair of lower connecting ears of the support frame are located on a pair of uprights 303. The upper and lower connecting ears of the support frame are connected to the upper and lower connecting ears on the fixed frame 307 respectively through pins 304, thereby connecting the support frame and the fixed frame together. Of course, to improve the connection strength between the fixed frame and the support frame, more connecting ears or connecting plates can also be provided.

[0078] Compared to existing vibratory compaction pile drivers with telescopic guide rods, although these drivers have a ring frame on the mast, the purpose of this ring frame is to protect the telescopic guide rod (with a large gap between the ring frame and the maximum outer diameter of the telescopic guide rod) from colliding with the mast during lowering, thus preventing component damage. It also prevents the vibratory compactor from colliding with the mast due to excessive swaying during compaction. Therefore, this ring frame cannot solve the problem of pile hole tilting caused by the vibratory compactor during compaction. In contrast, this invention uses a drill rod verticality maintaining device, providing rigid constraint force in the horizontal plane and guiding force in the vertical direction to the connecting section of the drill rod system. This ensures that the drill rod system is parallel to the mast, thereby guaranteeing the verticality of both the drill rod system and the vibratory compactor system, enabling the compaction of pile holes with the required verticality.

[0079] Furthermore, in order to determine the position of the clamping connection section based on the length of the drill pipe system connection section, the hoisting system of the present invention also installs an adjusting cylinder 103 on the mast 102 for adjusting the position of the drill pipe verticality holding device relative to the mast (e.g., Figure 3 As shown, the piston rod of the adjusting cylinder 103 extends vertically downwards parallel to the mast, and its end is fixedly connected to the fixing frame 307. The vertical connecting frame of the fixing frame 307 is connected to the mast 102 by a sliding fit, so that the position of the fixing frame 307 on the mast can be adjusted by adjusting the extension and retraction of the adjusting cylinder 103. In turn, the constraint position of the drill pipe verticality maintaining device on the connecting section of the drill pipe system can be adjusted, so that the vibratory compactor system can maintain better verticality requirements during vibratory compaction.

[0080] Figure 13 This invention illustrates a method for controlling the verticality of a vibratory stone crushing pile driver, which includes the aforementioned devices. The method of this invention includes:

[0081] The drill pipe system and the hoisting system are positioned parallel to the mast so that the vibratory compactor system connected to the bottom of the drill pipe system is parallel to the mast.

[0082] During vibratory compaction using the vibratory compactor system, the verticality of the mast relative to the main unit on the horizontal plane is detected in real time to obtain deviation data of the mast's verticality.

[0083] Based on the real-time deviation data of the mast verticality, determine whether the mast verticality needs to be adjusted.

[0084] If the verticality of the mast needs to be adjusted, adjust the verticality of the mast to meet the requirements so that the vibratory compactor system can vibrate downwards into the construction stratum and form vibratory crushing pile holes with the required verticality.

[0085] Specifically, the method of the present invention includes the following steps:

[0086] S01. The drill pipe system and the mast of the hoisting system are placed parallel to each other so that the vibratory compactor system connected to the bottom of the drill pipe system is parallel to the mast.

[0087] During the lowering of the drill pipe system and vibratory compactor system using the hoisting system, the verticality of the drill pipe system relative to the main machine is controlled to ensure that the vibratory compactor system, lowered along with the drill pipe system, is parallel to the mast. This verticality control is achieved by applying horizontal constraint forces and vertical guiding forces to the drill pipe system.

[0088] It should be noted that the main unit of the vibratory stone crushing pile machine should be placed on a level ground with sufficient bearing capacity to keep the main unit of the vibratory stone crushing pile machine horizontal. The main unit can be kept horizontal by using a theodolite for calibration to ensure that the main unit is in a horizontal and vertical state.

[0089] Since the drill pipe system comprises a connecting section, a support section, and a working section, and the connecting section is suspended from the mast by the first wire rope, the horizontal constraint force and vertical guiding force applied to the drill pipe system are applied to the connecting section. The application of the horizontal constraint force and vertical guiding force is accomplished by using a drill pipe verticality maintaining device to apply these forces to the connecting section.

[0090] The horizontal constraint force and vertical guiding force applied to the connecting section by the drill pipe verticality maintaining device include:

[0091] The fixing frame and support frame of the drill pipe verticality keeping device are connected together by multiple pins;

[0092] The mounting bracket is installed on the mast, and the connecting section of the drill pipe system passes through the through hole of the support bracket to apply horizontal constraint force and vertical guiding force to the connecting section through the support bracket.

[0093] When the horizontal support frame is composed of two connected parts, the latch can be opened, allowing the part of the support frame furthest from the mast to be open relative to the part closest to the mast. After a portion of the drill pipe system connecting section passes through the through hole of the support frame, the two parts are then connected and locked with the latch, thus providing rigid constraint on the connecting section. Preferably, the constrained position of the connecting section is close to the connection point between the connecting section and the support section.

[0094] Alternatively, when the position of the drill pipe verticality maintaining device on the mast is adjustable, applying horizontal constraint force and vertical guiding force to the connecting section through the drill pipe verticality maintaining device also includes:

[0095] Before or after the fixing frame of the drill pipe verticality retention device is connected to the support frame via multiple pins, it also includes:

[0096] Connect the fixing bracket to the piston rod of the adjusting cylinder;

[0097] According to the required clamping position of the drill pipe system connection section, control the extension and retraction of the piston rod of the adjusting cylinder to adjust the vertical position of the fixed frame on the mast through the piston rod until the drill pipe verticality holding device reaches the required position.

[0098] The drill pipe verticality maintenance device allows the drill pipe system to be positioned parallel to the mast of the hoisting system, thus ensuring that the vibratory compactor system connected to the bottom of the drill pipe system is parallel to the mast. When the mast's verticality meets the requirements, the vibratory compactor system can perform vibratory compaction of the strata to form pile holes.

[0099] S02. When performing vibratory compaction using a vibratory compactor system, ensure that the mast is perpendicular to the main unit on the horizontal plane, so that the vibratory compactor can vibrate downwards into the working stratum to form vibratory crushed stone pile holes with the required verticality.

[0100] After ensuring the drill pipe system, vibratory compactor system, and hoisting system mast are parallel using a drill pipe verticality maintaining device, the vibratory compactor system is used to vibrate the stratum. During vibratory compaction, the verticality of the mast relative to the main unit on the horizontal plane must meet the requirements so that the vibratory compactor can vibrate downwards into the stratum to form vibratory crushed stone pile holes. This includes the following steps:

[0101] S021. When performing vibratory compaction using the vibratory compactor system, the verticality of the mast relative to the host machine located on the horizontal plane is detected in real time to obtain real-time deviation data of the mast's verticality.

[0102] During the vibratory drilling process using a vibratory compactor, the verticality of the mast relative to the host machine located on the horizontal plane is monitored and processed in real time. This includes: monitoring the tilt angle of the mast relative to the host machine on the horizontal plane in real time to obtain the tilt angle of the mast relative to the host machine; and after obtaining the tilt angle of the mast relative to the host machine, calculating the real-time deviation data of the verticality of the mast relative to the host machine (referred to as mast verticality).

[0103] After obtaining the mast's tilt angle relative to the main unit (i.e., the angle between the mast and the main unit), the mast's verticality deviation data can be calculated using the following methods: First, the tilt angle relative to the main unit is detected in real-time by the tilt angle detection module. Then, 90 degrees is subtracted from this tilt angle to obtain the mast's verticality deviation value, which is the real-time deviation data of the mast's verticality. Alternatively, the following method can be used: First, the tilt angle relative to the main unit is detected in real-time by the tilt angle detection module. Then, 90 degrees is subtracted from this tilt angle, and the absolute value is taken to obtain the absolute value of the mast's verticality deviation value, which is also the real-time deviation data of the mast's verticality.

[0104] S022. Based on the real-time deviation data of the mast verticality, determine whether the mast verticality needs to be adjusted.

[0105] After obtaining the real-time deviation data of the mast verticality through calculation, it is determined whether the mast verticality needs to be adjusted based on the real-time deviation data. That is, it is determined whether the deviation data is within a preset threshold range. If the deviation data exceeds the preset threshold range, the mast verticality needs to be adjusted. If the deviation data does not exceed the preset threshold range, the mast verticality does not need to be adjusted.

[0106] Specifically, after obtaining real-time deviation data of mast verticality, a comparison module determines whether mast verticality adjustment is needed. This module compares the obtained deviation data with a pre-set threshold range for mast verticality and obtains the corresponding comparison result. The comparison process is as follows: After obtaining the real-time deviation data, it is determined whether the deviation data is within the preset threshold range. If the deviation data exceeds the preset threshold range, mast verticality adjustment is required, and the relevant information regarding the direction of adjustment (i.e., whether the mast should tilt forward or backward) and the magnitude of the adjustment is determined. If the deviation data does not exceed the preset threshold range, mast verticality adjustment is not required. This preset threshold range represents the range of the maximum and minimum angles that the mast can tilt relative to the vertical plane.

[0107] S023. If it is necessary to adjust the verticality of the mast, adjust the verticality of the mast to meet the requirements so that the vibratory compactor system can vibrate the stratum under construction downwards with the required verticality and form vibratory crushing pile holes.

[0108] When the comparison result shows that the deviation of the mast verticality exceeds the preset threshold range and the mast verticality needs to be adjusted to meet the requirements, the comparison result is sent to the PLC controller. The controller controls the mast angle adjustment mechanism to perform corresponding actions to adjust the mast verticality so that the mast verticality meets the requirements.

[0109] Specifically, if mast verticality adjustment is required, the controller first stops the vibratory compactor system and then lifts it using the hoisting system. Next, it controls the mast angle adjustment mechanism to adjust the mast verticality to the required level: the PLC controller controls the proportional valve opening size and direction, which in turn drives the mast to deflect relative to the main unit via the correction cylinder, adjusting the tilt direction and magnitude to ensure the mast's verticality is within the preset threshold range. Finally, the lifted vibratory compactor system is lowered, and vibratory compaction continues on the strata.

[0110] Using the method of this invention, the telescopic guide rod system is a rigid connection, and its verticality is directly guaranteed by the mast verticality mechanism. If the mast's verticality meets the requirements, the verticality of the drill rod system and vibratory compactor, which are installed parallel to the mast, will also meet the requirements during vibratory compaction. The guide rod + vibratory compactor system will remain vertical even when encountering hard layers or large gravel. In engineering practice, vibratory compaction is effective for drilling in hard strata exceeding 50 meters in depth, especially in earthquake-prone areas with large gravel. This method maintains the impact force on hard layers and gravel while ensuring the verticality of the pile hole. The probability of switching to rotary drilling or impact during construction is much lower than with traditional methods (almost no need to switch to rotary drilling or impact). It is far superior to traditional methods in terms of quality and efficiency, ensuring the uniformity and compaction of the resulting vibratory compacted stone pile holes and piles, thus ensuring the good safety performance of the vibratory compacted stone piles. In addition, the vibro-compacted stone piles formed after the pile holes are filled by this method can also form a good vertical drainage channel in the stratum, which greatly reduces the drainage distance of the excess pore water in the stratum, and accelerates the dissipation of pore water pressure by several times or even dozens of times. This plays a crucial role in controlling or suppressing the rise of excess pore water pressure, and fundamentally improves the earthquake resistance and seismic performance of the composite foundation.

[0111] Although the present invention has been described in detail above, the present invention is not limited thereto. Those skilled in the art can make modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A method for controlling the verticality of a vibratory stone crushing pile driver, wherein the vibratory stone crushing pile driver includes a hoisting system, a drill rod system with a telescopic guide rod, and a vibratory compactor system, characterized in that, The method includes: The drill pipe system and the mast of the hoisting system are arranged parallel to each other. By applying horizontal constraint force and vertical guiding force to the connecting section of the drill pipe system, the vibratory compactor system connected to the bottom of the drill pipe system is always parallel to the mast. Applying horizontal constraint force and vertical guiding force to the connecting section of the drill pipe system includes: installing a fixed frame connected to the support frame on the mast, so that the connecting section of the drill pipe system passes through the through hole of the support frame, so that the support frame applies horizontal constraint force and vertical guiding force to the connecting section, making the vibratory compactor system connected to the bottom of the drill pipe system parallel to the mast; installing an adjusting cylinder on the mast, the piston rod of the adjusting cylinder is parallel to the mast and extends vertically downward, and the end is fixedly connected to the fixed frame. The vertical connecting frame of the fixed frame is connected to the mast by a sliding fit. The position of the fixed frame on the mast is adjusted by adjusting the extension and retraction of the cylinder, thereby adjusting the constraint position of the support frame on the connecting section of the drill pipe system. When vibratory compaction is carried out using a vibratory compactor system that is always parallel to the mast, the verticality of the mast relative to the host machine on the horizontal plane is detected in real time by an inclination detection module installed inside the mast near the lower 1 / 5 of the mast, so as to obtain real-time deviation data of the mast verticality. Based on the real-time deviation data of the mast verticality, determine whether the mast verticality needs to be adjusted. If the verticality of the mast needs to be adjusted, the vibratory compactor system stops vibratory compaction and is lifted up by the hoisting system. Then the verticality of the mast is adjusted so that the vibratory compactor system can vibrate downwards into the construction stratum to form vibratory crushed stone pile holes with the required verticality.

2. The method according to claim 1, characterized in that, Real-time monitoring of the verticality of the mast relative to the main unit mounted on the horizontal plane is performed to obtain deviation data of the mast's verticality, including: The tilt angle of the mast relative to the main unit, which is mounted on a horizontal plane, is obtained by real-time detection. After obtaining the tilt angle of the mast relative to the main unit, subtract 90 degrees from this angle to obtain the verticality deviation value of the mast relative to the main unit.

3. The method according to claim 1, characterized in that, Real-time monitoring of the verticality of the mast relative to the main unit mounted on the horizontal plane is performed to obtain deviation data of the mast's verticality, including: The tilt angle of the mast relative to the main unit, which is mounted on a horizontal plane, is obtained by real-time detection. After obtaining the tilt angle of the mast relative to the main unit, subtract 90 degrees from this angle and take the absolute value to obtain the absolute value of the verticality deviation of the mast relative to the main unit.

4. The method according to claim 1, characterized in that, Based on the obtained real-time deviation data of mast verticality, determine whether adjustment of mast verticality is necessary, including: After obtaining the real-time deviation data of the mast verticality, determine whether the deviation data is within the preset threshold range; If the deviation data exceeds the preset threshold range, the mast verticality needs to be adjusted. If the deviation data does not exceed the preset threshold range, there is no need to adjust the mast verticality.

5. The method according to claim 4, characterized in that, If the mast's verticality needs to be adjusted, adjusting the mast's verticality to meet the requirements includes: When it is necessary to adjust the verticality of the mast, the vibratory compactor system stops vibratory compaction and is lifted up by the hoisting system. After the vibratory impactor system is raised, the mast angle adjustment mechanism is controlled to perform corresponding actions to adjust the mast verticality to meet the requirements.

6. The method according to claim 5, characterized in that, The control mechanism for adjusting the mast angle performs corresponding actions to adjust the mast's verticality to meet requirements, including: By controlling the opening of the proportional valve used for correction, the correction cylinder connected to the proportional valve is controlled to perform the corresponding action. The action of the correction cylinder causes the mast, which is connected to the correction cylinder, to deflect relative to the main unit, so that the mast's verticality meets the requirements.

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