A low-headroom, multi-axis cement mixing pile machine

Abstract

This invention relates to the field of construction machinery and equipment technology, specifically to a low-headroom, rod-jointing type multi-axis cement mixing pile machine. It includes a hydraulic walking frame and a tower. A landing gear is mounted on the tower, and at least two sets of bearing devices for rotatably connecting the top end of the drill rod are arranged side-by-side within the landing gear. At least two sets of drilling rig transmission mechanisms for driving the drill rod rotation are also arranged side-by-side on the hydraulic walking frame. The drilling rig transmission mechanisms and bearing devices are arranged vertically opposite each other and laterally along the hydraulic walking frame. A guide and pressure-reducing mechanism is connected to the landing gear, enabling it to move vertically along the tower. The low-headroom, rod-jointing type multi-axis cement mixing pile machine has a low overall height, ≤5.5m, requiring less clearance for construction operations. Therefore, it is suitable for use in areas with low or limited clearance. Furthermore, the drill rod can be joined manually, eliminating the need for external construction machinery such as large cranes.

Description

Technical Field

[0001] This invention relates to the field of construction machinery and equipment technology, specifically to a low-headroom, multi-axis cement mixing pile machine with connecting rod. Background Technology

[0002] Cement mixing piles are a commonly used method for soft soil foundation reinforcement in engineering projects. They use cement as the main curing agent, employing a mixing pile machine to inject cement into the soil and thoroughly mix it. This causes a series of physicochemical reactions between the cement and the soil, hardening the soft soil and increasing the foundation strength. However, existing cement mixing pile machines, limited by pile length, have relatively tall pile frames and are only suitable for areas with unrestricted construction clearance.

[0003] Chinese invention patent (publication number CN105156046B) discloses a deep pile mixing drilling rig with a drill rod disassembly and splicing device and a method for disassembling and splicing drill rods. The rig utilizes two longitudinally arranged towers. During operation, when an extension of the drill rod is required, a hydraulic cylinder drives the tower sliding frame to move longitudinally relative to the upper base frame. The extended drill rod is then aligned and spliced ​​onto the upper end of the drill rod already drilled into the ground. The main power system and pressurization system are then activated for deep pile drilling. The method for removing the drill rod is the reverse of the extension method. This simplifies the difficulty of deep pile fabrication. When the tower is 30 meters high, a 60-meter deep pile can be fabricated. This invention, to a certain extent, solves the problem of existing rigs where the tower height is similar to the pile length, resulting in a high overall height and requiring external construction machinery such as large cranes for connection.

[0004] However, in areas with strict restrictions on construction clearance, the use of existing cement mixing pile machines remains limited. In particular, for the renovation and expansion projects of existing airports, the overall height of conventional walking cement mixing pile machines is still too high, which cannot meet the construction schedule requirements and affects the smooth construction of the project. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing cement mixing pile machines, which are too tall and cannot meet the requirements for use in areas with strictly limited construction clearance, and to provide a low-clearance, multi-axis cement mixing pile machine with connecting rods.

[0006] This invention provides a low-headroom, rod-type multi-axis cement mixing pile machine, comprising a hydraulic walking base and a tower, the tower being mounted on the hydraulic walking base.

[0007] The stacking height of the tower and the hydraulic walking base frame shall not exceed 5.5m;

[0008] The tower is equipped with landing gear, and at least two sets of bearing devices for rotatably connecting the top of the drill pipe are arranged side by side inside the landing gear.

[0009] At least two sets of drilling rig transmission mechanisms for driving the drill rod to rotate are arranged side by side on the hydraulic walking base frame. The drilling rig transmission mechanisms and bearing devices are arranged vertically opposite each other and are arranged laterally along the hydraulic walking base frame.

[0010] The landing gear is connected to a guide pressure relief mechanism, which can drive the landing gear to move up and down along the tower.

[0011] This invention discloses a low-headroom, multi-axis cement mixing pile machine with a drilling transmission mechanism arranged laterally along a hydraulic walking frame. The lifting frame and the drilling transmission mechanism are arranged vertically opposite each other to form a multi-axis cement mixing pile machine. The overall height of the pile machine is low, requiring less space and making it suitable for use in areas with strictly limited construction clearance. At the same time, the height of the drill rods is comparable to the height of the tower, resulting in shorter lengths and lighter weights for each drill rod. This allows for manual connection and disconnection of the drill rods, avoiding the use of external construction machinery such as large cranes.

[0012] Preferably, the top cantilever of the tower is equipped with a top beam shaft, on which a winch lifting mechanism is attached. The winch lifting mechanism includes a winch, a lifting rope, and a connecting piece. The winch is mounted on a hydraulically walkable base frame, the lifting rope is attached to the top beam shaft, and the connecting piece is connected to the end of the lifting rope. The winch and the connecting piece are located on the front and rear sides of the tower, respectively. The winch lifting mechanism assists in the transfer of drill pipes. By setting up a top beam shaft and a winch lifting mechanism on the tower, providing power through the winch, connecting the drill pipe through the connecting piece, and transmitting power through the lifting rope, the drill pipe can be raised or lowered, reducing the difficulty of manual connection and disconnection.

[0013] Preferably, the longitudinal ends of the top beam shaft are respectively provided with steering parts, and the lifting rope passes through the steering parts; each bearing device is respectively provided with a top beam shaft and a winch lifting mechanism, and adjacent top beam shafts are connected by a crossbeam. The lifting rope is arranged along the longitudinal direction of the hydraulic walking frame, which facilitates the arrangement and installation of the winch lifting mechanism on the hydraulic walking frame, and enables the separate connection and disconnection of each drill rod through the winch lifting mechanism that is correspondingly set to each drill rod, making it easier to match different connection and disconnection requirements and achieve smooth connection and disconnection operations with low headroom.

[0014] Preferably, the tower and the hydraulic walking frame are hinged together, and a lifting cylinder is provided between the tower and the hydraulic walking frame, allowing the tower to be rotated onto the hydraulic walking frame for stacking. This allows the tower to be stacked on the hydraulic walking frame, reducing the overall height of the cement mixing pile machine during movement, facilitating transportation, and making it easy to adjust the tower's tilt angle via the lifting cylinder for convenient use.

[0015] Preferably, the tower is equipped with a support section, which is hingedly connected to a strut, and the strut is hingedly connected to a hydraulically walking base frame. This allows the strut to reinforce and support the tower, improving structural stability.

[0016] Preferably, the top of the tower is provided with an extension connection section, which can connect to an extended derrick. The extended derrick is provided with a support section, and the top of the extended derrick can be detachably connected to the top beam shaft. The landing gear can be slidably connected to the extended derrick. This allows the tower height to be adjusted according to actual conditions, achieving adaptability of the overall height of the piling machine to the operating environment.

[0017] Preferably, the guiding pressure relief mechanism includes a sprocket assembly and a drive mechanism. The sprocket assembly includes a double-row transmission chain with a clamping member connecting to the landing gear on the transmission chain. The drive mechanism drives the sprocket assembly to raise or lower the landing gear. The clamping member connects the guiding pressure relief mechanism to the landing gear, enabling control of the landing gear's raising or lowering, and consequently, control of the drill pipe's raising or lowering.

[0018] Preferably, the hydraulic walking base is equipped with a drill string storage mechanism. This mechanism allows for the storage of drill pipes, facilitating the use of a large number of drill pipes.

[0019] Preferably, the drill pipe has a rectangular cross-section; the drill pipe has a slurry channel inside, a connecting groove at the top, and a joint component at the bottom, allowing the joint components of adjacent drill pipes to be connected to the connecting groove; the joint component has a frustum shape with a gradually decreasing cross-section along the direction away from the longitudinal direction of the drill pipe; and a sealing ring is provided at the end of the joint component away from the drill pipe. The rectangular cross-section of the drill pipe allows for easy identification of the connection status with adjacent drill pipes based on its shape, facilitates the connection of adjacent drill pipes, improves the efficiency of connecting and disconnecting drill pipes, and is beneficial for manual connection and disconnection operations. Furthermore, the frustum-shaped joint component and the connecting groove prevent relative rotation between adjacent drill pipes after connection, resulting in a more stable connection. Additionally, the sealing ring ensures a tight connection between adjacent drill pipes, preventing slurry leakage at the joint.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. This invention provides a low-headroom, multi-axis cement mixing pile machine with a connecting rod. The drilling rig transmission mechanism is arranged laterally along the hydraulic walking frame, and the lifting frame and the drilling rig transmission mechanism are arranged vertically opposite each other to form a multi-axis cement mixing pile machine. The overall height of the pile machine is set low, reducing the requirements for the height of the working space, and it can be adapted to use in areas with strictly limited construction headroom.

[0022] 2. This invention provides a low-headroom, multi-axis cement mixing pile machine with a drill rod that is as tall as the tower, making each drill rod shorter and lighter, allowing for manual connection of the drill rods and avoiding the use of external construction machinery such as large cranes. Attached image description:

[0023] Figure 1 This is a side view of a low-headroom, multi-axis cement mixing pile machine with a connecting rod, as described in Example 1.

[0024] Figure 2 This is a front view of a low-headroom joint-type multi-axis cement mixing pile machine according to Example 1;

[0025] Figure 3 for Figure 1 Top view of area A (showing only the positional relationship between the drill pipe and the tower);

[0026] Figure 4 This is a top view of a low-headroom, multi-axis cement mixing pile machine with a connecting rod, as described in Example 1.

[0027] Figure 5 This is an axonometric view of a low-clearance joint-type multi-axis cement mixing pile machine according to Example 1;

[0028] Figure 6 This is a schematic diagram of the drill pipe structure in Example 1. Figure 1 ;

[0029] Figure 7 This is a schematic diagram of the drill pipe structure in Example 1. Figure 2 ;

[0030] Marked in the image:

[0031] 1-Tower, 11-Guide groove, 12-Support unit, 2-Landing gear, 21-Connector, 3-Drill pipe, 31-Slurry channel, 32-Connecting groove, 33-Joint component, 34-Sealing ring, 4-Guide pressure relief mechanism, 41-Holding component, 42-Drive chain, 43-Main sprocket, 44-Guide sprocket, 5-Top beam shaft, 51-Steering unit, 52-Crossbeam, 6-Winding mechanism, 61-Wind, 62-Lifting rope, 63-Hanging component, 7-Support rod, 8-Drilling rig transmission mechanism, 9-Drill tool storage mechanism, 91-Limit rod, 10-Hydraulic walking base frame. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0033] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0034] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0035] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0036] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0037] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0038] Example 1

[0039] like Figures 1-5 As shown, a low-headroom, rod-type multi-axis cement mixing pile machine includes a hydraulic walking frame 10, a tower 1, a guide pressure-reducing mechanism 4, and a drilling rig transmission mechanism 8. The tower 1 is mounted on the hydraulic walking frame 10, and the combined height of the tower 1 and the hydraulic walking frame 10 does not exceed 5.5m. The tower 1 is equipped with a landing gear 2, and at least two sets of bearing devices for rotatably connecting the top end of the drill rod 3 are arranged side by side inside the landing gear 2. At least two sets of drilling rig transmission mechanisms 8 for driving the drill rod 3 to rotate are arranged side by side on the hydraulic walking frame 10. The drilling rig transmission mechanisms 8 and the bearing devices are arranged vertically opposite each other and are arranged laterally along the hydraulic walking frame 10. The landing gear 2 is connected to the guide pressure-reducing mechanism 4, which can drive the landing gear 2 to move up and down along the tower 1 to form a multi-axis cement mixing pile machine.

[0040] In one or more embodiments, the hydraulic walking base frame 10 is basically the same in structure as the hydraulic walking base frame 10 in the existing cement mixing pile machine. The height can be about 1m. It includes an upper base frame, a lower base frame, a longitudinal movement cylinder, a transverse movement cylinder, and four outriggers. The upper base frame is set above the lower base frame and is mainly used to install the hydraulic system, part of the electrical system, the tower 1, and the drilling rig transmission mechanism 8 of the cement mixing pile machine. The upper base frame and the lower base frame slide in contact. The longitudinal and transverse movement cylinders realize longitudinal and transverse displacement. The upper base frame is provided with sleeves at the front and rear four corners. The outriggers are pushed into the sleeves and cooperate with the sleeves, which can extend laterally to expand the support surface of the hydraulic walking base frame 10, improve the setting stability of the pile machine, and assist in adjusting the verticality and plane height of the tower 1.

[0041] In an optional embodiment, the hydraulic walking base 10 has a significant aspect ratio. The lateral direction of the hydraulic walking base 10 is its width direction, and the longitudinal direction of the hydraulic walking base 10 is its length direction. The tower 1 is laterally located at one end of the longitudinal direction of the upper base, and the remaining space is used to install related mechanical transmission systems, electrical systems and other supporting control structures.

[0042] In one or more embodiments, the tower 1 may include a truss-type portal frame structure welded with rectangular tubes, set on top of the upper base frame, for auxiliary installation of the guide pressure relief mechanism 4. When the tower 1 is in use, the superposition height of the tower 1 and the hydraulic walking base frame 10 does not exceed 5.5m. Considering that a single drill rod 3 needs to be set within the height range of the tower 1, the shorter the length of the drill rod 3, the more times the rod needs to be connected and disconnected. Therefore, by comprehensively considering the pile length, the number of times the rod needs to be connected and disconnected, and the weight of the drill rod 3, the height of the tower 1 and the length of the drill rod 3 can be initially determined, so that the height of the tower 1 can be selected and set according to the actual situation. This makes the overall height of the cement mixing pile machine lower, the requirements for the clear space of the working environment lower, and it can adapt to low clear space construction conditions. Moreover, the number of times the rod needs to be connected and disconnected is appropriate, the operating efficiency is higher, and the efficiency of the pile machine is improved.

[0043] In an optional embodiment, the plane of the tower 1 of the truss-type portal frame structure is perpendicular to the longitudinal section of the hydraulic walking base 10, that is, the tower 1 is arranged in the transverse direction along the hydraulic walking base 10, which facilitates connection with the mechanical transmission system and electrical system installed on the hydraulic walking base 10.

[0044] In an optional embodiment, the tower 1 can be formed by multiple levels of supports connected by bolts, which facilitates disassembly and transportation, and allows for a further reduction in the height of the tower 1, thereby reducing the overall height of the piling machine and improving the flexibility of the piling machine.

[0045] In an optional implementation, the tower 1 can be composed of a three-level support structure, with the three levels of support structure connected by hinges and bolts.

[0046] In an optional embodiment, channel steel or channel steel components are vertically welded onto the tower 1 to form guide grooves 11. The openings of the two guide grooves 11 are opposite to each other, allowing the landing gear 2 to slide within the guide grooves 11 on both sides. The guide grooves 11 provide vertical guidance for the landing gear 2 to ensure the verticality of the pile.

[0047] In one or more embodiments, the internal structure of the landing gear 2 is mainly a bearing device, which can be adapted to rotate with the top end of the drill rod 3; one or both sides of the landing gear 2 can slide in the guide groove 11; the landing gear 2 is connected to the guide pressure relief mechanism 4 through a clamping member 41 provided on the guide pressure relief mechanism 4; the landing gear 2 is provided with a connector 21 connected to the high pressure hose of the slurry pump, and the bearing device inside the landing gear 2 rotates with the drill rod 3 and transmits the pressure increase and decrease of the guide pressure relief mechanism 4 to the drill bit at the bottom of the drill rod 3.

[0048] In an optional embodiment, two sets of bearing devices are arranged side by side inside the landing gear 2, and two sets of pile driver transmission mechanisms 8 are correspondingly provided on the hydraulic walking base frame 10. The two sets of bearing devices can rotate synchronously to form a dual-shaft cement mixing pile machine.

[0049] In one or more embodiments, the guide pressure relief mechanism 4 includes a sprocket assembly and a drive mechanism. The sprocket assembly includes a double-row transmission chain 42. The transmission chain 42 is provided with a clamping member 41 that connects to the landing gear 2. The transmission chain 42 is tensioned by a main sprocket 43 and a guide sprocket 44. The main sprocket 43 is located at the lower part of the tower 1, and the guide sprocket 44 is located at the top of the tower 1. The guide pressure relief mechanism 4 inputs power to the main sprocket 43 through a worm gear reducer via the double-row transmission chain 42, driving the transmission chain 42 and the landing gear 2 to move up and down, thereby realizing the raising or lowering control of the landing gear 2, and thus realizing the raising or lowering control of the drill pipe 3.

[0050] In an optional embodiment, a depth gauge is also provided on the tower 1. The depth gauge can be a worm gear transmission mechanism. The worm gear transmission mechanism meshes with the transmission chain 42 of the guide pressure relief mechanism 4 and moves synchronously to realize depth counting.

[0051] In one or more implementations, such as Figure 6 , Figure 7 As shown, the drill rod 3 has a rectangular cross-section. The top can be connected to the flange of the connector 21 for connecting the high-pressure hose of the grout pump. This is used to transmit the rotation and lifting motion of the cement mixing pile machine to the drill bit at the bottom end, and to form a sealed channel in the core for cement grout to flow to the drill bit. Each drill rod 3 is provided with a grout channel 31. The top of the drill rod 3 is provided with a connecting groove 32, and the bottom of the drill rod 3 is provided with a joint component 33. The joint components 33 of adjacent drill rods 3 can be connected to the connecting groove 32. This technical solution achieves the connection of adjacent drill rods 3 through the plug-in connection of the joint component 33 and the connecting groove 32. Considering that the drill rod 3 is relatively short and the number of connection operations is large, if the existing connection method is used, external mechanical equipment such as cranes will be required, resulting in low connection efficiency and a large number of connection points, which poses a risk of grout leakage. Therefore, the structure of the drill rod 3 is improved to facilitate connection operations and avoid grout leakage. The rectangular cross-section of the drill rod 3 makes it easy to judge the connection status of adjacent drill rods 3 based on its shape, avoids the rolling of the drill rod 3, facilitates the transfer and use of the drill rod 3, and facilitates the alignment and insertion of adjacent drill rods 3, improving the efficiency of connection and disassembly, and is beneficial for manual connection and disassembly operations.

[0052] In an optional embodiment, the connector member 33 is a frustum shape with a gradually decreasing cross-sectional area along the direction away from the longitudinal direction of the drill pipe 3. This allows the connector member 33 to be smoothly inserted into the connecting groove 32, and the frustum-shaped connector member 33 and the connecting groove 32 are connected together, making it less likely for adjacent drill pipes 3 to rotate relative to each other after connection, allowing for smooth rotation and a more stable connection.

[0053] In an optional embodiment, the cross-section of the joint member 33 is a regular hexagon.

[0054] In an optional embodiment, a sealing ring 34 is provided at the end of the joint member 33 away from the drill rod 3. The sealing ring 34 can abut against the inner wall of the connecting groove 32. By providing the sealing ring 34, the connection between adjacent drill rods 3 is made tight, and no grout leakage will occur at the joint position.

[0055] In an optional embodiment, the sealing ring 34 is a silicone structural component.

[0056] In this embodiment, the overall height of the pile driver is relatively low, resulting in a lower tower 1. The length of the drill rod 3 is adapted to the height of the tower 1. During the drilling process, the top end of the drill rod 3 is connected to the landing gear 2, and the bottom end is connected to the drilling rig transmission mechanism 8. The length of a single drill rod 3 is necessarily less than the height of the tower 1, making the weight of a single drill rod 3 lighter. The rod can be joined and disassembled manually, avoiding the use of large lifting equipment during the joining and disassembly process and improving the efficiency of joining and disassembling the rod. Compared with the prior art, when drilling cement mixing piles at the same depth, the number of connection points between drill rods 3 increases. To ensure the smooth delivery of cement slurry and avoid leakage from the connection points of adjacent drill rods 3, the connection points of adjacent drill rods 3 are optimized. The frustum-shaped joint component 33 is inserted into the matching connecting groove 32, which facilitates the quick alignment and connection of adjacent drill rods 3 and improves the joining efficiency.

[0057] In an optional embodiment, the length of the drill rod 3 is 2.2m, and the height of the tower 1 meets the requirements for setting a single drill rod 3 within the height range of the tower 1.

[0058] This embodiment of a low-clearance multi-axis cement mixing pile machine with connecting rods features a low overall height after the tower 1 and hydraulic walking base 10 are stacked. This reduces the space height requirements of the cement mixing pile machine, making it suitable for use in areas with strictly limited construction clearance. Simultaneously, the height of the drill rods 3 is comparable to that of the tower 1, resulting in shorter lengths and lighter weight for each drill rod. This allows for manual rod connection, avoiding the use of external construction machinery such as large cranes. Furthermore, by installing a top beam shaft 5 and a winch lifting mechanism 6 on the tower 1, the transfer of the drill rods 3 is assisted, reducing the difficulty of manual rod connection and disconnection, thus enabling smooth low-clearance rod connection. The rod disconnection process is simply the reverse operation.

[0059] Example 2

[0060] like Figures 1-5 As shown in the figure, in this embodiment of a low headroom multi-axis cement mixing pile machine, based on embodiment 1, a top beam shaft 5 is provided on the top cantilever of the tower 1, and a winch lifting mechanism 6 is connected on the top beam shaft 5. The winch lifting mechanism 6 is used to assist in the transfer of drill rod 3.

[0061] In one or more embodiments, the hoisting mechanism 6 may include a winch 61, a lifting rope 62, and a coupling 63. The winch 61 is mounted on the hydraulic walking frame 10, the lifting rope 62 is attached to the top beam shaft 5, and the coupling 63 is connected to the end of the lifting rope 62. The winch 61 and the coupling 63 are respectively located on the front and rear sides of the tower 1. Power is provided by the winch 61, the coupling 63 connects to the drill rod 3, and the lifting rope 62 transmits power, realizing the lifting and lowering of the drill rod 3, reducing the difficulty of manual connection and disconnection of the rod.

[0062] In an optional embodiment, the hoisting rope 62 is a steel wire rope wound on the winch 61, and the connecting piece 63 is a hook or other structural component that can hold the drill rod 3.

[0063] In an optional embodiment, the top beam shaft 5 can be a long rod-shaped steel rod structure, with one end connected to the top of the tower 1 and the other end cantilevered out of the top range of the tower 1. The two longitudinal ends of the top beam shaft 5 are respectively provided with a turning part 51, and the lifting rope 62 passes through the turning part 51.

[0064] In an optional embodiment, the steering part 51 may include grooved pulleys located at both ends of the top of the beam shaft 5. The lifting rope 62 passes through the grooved pulleys at both ends of the beam shaft 5, enabling it to move smoothly along the longitudinal direction of the beam shaft 5 and avoid losing contact with the beam shaft 5.

[0065] In an optional embodiment, the top beam shaft 5 is welded to the top of the tower 1 or fixed to the top of the tower 1 by bolts.

[0066] Example 3

[0067] like Figure 1 As shown in the figure, in this embodiment of a low headroom connecting rod type multi-axis cement mixing pile machine, based on embodiment 1, the tower 1 is hinged to the hydraulic walking base frame 10, and a lifting cylinder is provided between the tower 1 and the hydraulic walking base frame 10, so that the tower 1 can be rotated to be stacked on the hydraulic walking base frame 10.

[0068] In one or more embodiments, the tower 1 is provided with a support part 12, which is hinged to the top end of the support rod 7, and the bottom end of the support rod 7 is hinged to the hydraulic walking base frame 10. The support rod 7 strengthens the support of the tower 1, forming a stable triangular support structure with the support rod 7, the tower 1, and the hydraulic walking base frame 10, thereby improving the stability of the tower 1 in use and ensuring the normal operation of the cement mixing pile machine.

[0069] This embodiment of a low-clearance, multi-shaft cement mixing pile machine with a connecting rod has a tower 1 hinged to a hydraulic walking frame 10 on one side of its bottom. A lifting cylinder is provided between the tower 1 and the hydraulic walking frame 10. Power is provided by the lifting cylinder, which can change the relative angle between the tower 1 and the hydraulic walking frame 10, thereby allowing the tower 1 to be stacked on the hydraulic walking frame 10. This reduces the overall height of the cement mixing pile machine during movement, facilitating transportation and allowing the tilt angle of the tower 1 to be adjusted via the lifting cylinder, thus facilitating the assembly, disassembly, and use of the cement mixing pile machine.

[0070] Example 4

[0071] like Figures 1-5 As shown, this embodiment of a low-clearance multi-axis cement mixing pile machine with connecting rods, based on embodiment 1, has a drill bit storage mechanism 9 on the hydraulic walking base frame 10, and the top beam shaft 5 is located above the drill bit storage mechanism 9.

[0072] In one or more embodiments, the drill string storage mechanism 9 may include multiple limiting rods 91 vertically arranged on the hydraulic walking base frame 10, forming a drill string 3 storage space between the multiple limiting rods 91, so that the drill string 3 can be limited between adjacent limiting rods 91, and several drill strings 3 can be stacked to achieve integrated storage of a large number of drill strings 3.

[0073] In an optional embodiment, the longitudinal direction of the drill rod 3 in its stored state is parallel to the transverse direction of the hydraulic walking base frame 10, and the cantilever end of the top beam shaft 5 is located directly above the drill bit storage mechanism 9.

[0074] In an optional embodiment, the drill bit storage mechanism 9, which is formed by multiple limiting rods 91, can be fitted with a drill rod 3 storage box. The drill rod 3 storage box can be taken out or put in as a whole from the drill rod 3 storage space, so as to realize the overall transfer or replacement of the integrated drill rod 3 in the storage state to adapt to different working conditions.

[0075] This embodiment of a low-headroom, multi-axis cement mixing pile machine with connecting rods integrates a drill bit storage mechanism 9 on a hydraulic walking frame 10 to store drill rods 3, facilitating the overall transportation and use of a large number of drill rods 3. This overcomes the inconvenience caused by the increased number of drill rod sections and the increased frequency of connecting or disassembling operations due to the reduced length of the tower 1 and drill rods 3.

[0076] Example 5

[0077] This embodiment of a low-clearance, multi-axis cement mixing pile machine with connecting rods, based on embodiment 1, has an extended connecting part at the top of the tower 1, which can be connected to an extended derrick. The extended derrick has a support part 12, and the top of the extended derrick can be detachably connected to the top beam shaft 5. The landing gear 2 can be slidably connected to the extended derrick.

[0078] In one or more embodiments, the extended derrick has the same structure as the tower 1, both being truss-type portal frame structures welded from rectangular tubes. The only difference is that an extension connection is added to the top of the tower and the bottom of the extended derrick, which is used for the detachable connection between the tower 1 and the extended derrick.

[0079] In an optional embodiment, the extended connection may be a perforated lug or a surrounding plate added to the tower 1, and the tower 1 and the extended derrick are connected and fixed by bolts or pins passing through the lug or surrounding plate.

[0080] In an optional implementation, the top beam 5 can be detachably connected to the top of the extended derrick via bolts.

[0081] This embodiment of a low-headroom, multi-axis cement mixing pile machine with a connecting rod design expands the adjustable height range of the tower 1 by allowing the tower 1 to be further height-adjusted. This allows the height of the tower 1 to be adjusted according to actual conditions, thereby changing the overall height of the pile machine and adapting it to the operating environment.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-headroom, rod-type multi-shaft cement mixing pile machine, comprising a hydraulically walking base frame (10) and a tower (1), wherein the tower (1) is mounted on the hydraulically walking base frame (10), characterized in that, The stacking height of the tower (1) and the hydraulic walking base frame (10) shall not exceed 5.5m. The tower (1) is made of multiple levels of supports that are set up at the top and bottom and connected by bolts. The tower (1) is equipped with landing gear (2), and at least two sets of bearing devices for rotating connection of the top end of the drill rod (3) are arranged side by side inside the landing gear (2); At least two sets of drilling rig transmission mechanisms (8) for driving the rotation of drill rods (3) are arranged side by side on the hydraulic walking base frame (10). The drilling rig transmission mechanism (8) and the bearing device are arranged opposite each other vertically. The drilling rig transmission mechanism (8) is arranged laterally along the hydraulic walking base frame (10). The cross section of the drill rod (3) is rectangular. A slurry channel (31) is provided inside the drill rod (3). A connecting groove (32) is provided at the top of the drill rod (3). A joint component (33) is provided at the bottom of the drill rod (3). The joint components (33) of adjacent drill rods (3) can be connected to the connecting groove (32). The joint component (33) is in the shape of a frustum with a gradually decreasing cross section along the direction away from the longitudinal direction of the drill rod (3). A sealing ring (34) is provided at the end of the joint component (33) away from the drill rod (3). When the drill rod (3) is waiting to be lowered into the ground, the top part is connected to the landing gear (2), and the bottom part is connected to the drilling rig transmission mechanism (8). The connection and disconnection of the drill rod is performed manually. The landing gear (2) is connected to a guide pressure relief mechanism (4). The guide pressure relief mechanism (4) can drive the landing gear (2) to move up and down along the tower (1). The guide pressure relief mechanism (4) includes a sprocket assembly and a drive mechanism. The sprocket assembly includes a double-row transmission chain (42). The transmission chain (42) is provided with a clamping part (41) for connecting the landing gear (2). The drive mechanism drives the sprocket assembly to drive the landing gear (2) to rise or fall. The transmission chain (42) is tensioned through the main sprocket (43) and the guide sprocket (44). The main sprocket (43) is located at the lower part of the tower (1), and the guide sprocket (44) is located at the top of the tower (1). The guide pressure relief mechanism (4) inputs power to the main sprocket (43) through the worm gear reducer via the double-row transmission chain (42), driving the transmission chain (42) and the landing gear (2) to move up and down, thereby realizing the control of the rise or fall of the landing gear (2), and thus realizing the control of the rise or fall of the drill pipe (3). The tower (1) has a cantilevered top beam shaft (5), on which a hoisting mechanism (6) is attached. The hoisting mechanism (6) includes a winch (61), a hoisting rope (62), and a connecting piece (63). The winch (61) is mounted on a hydraulic walking frame (10), the hoisting rope (62) is attached to the top beam shaft (5), and the connecting piece (63) is connected to the end of the hoisting rope (62). The winch (61) and the connecting piece (63) are located on the front and rear sides of the tower (1). The longitudinal ends of the top beam shaft (5) are respectively provided with a turning part (51), through which the hoisting rope (62) passes. Above each bearing device, there is a top beam shaft (5) and a winch lifting mechanism (6). Adjacent top beam shafts (5) are connected by a crossbeam (52). A drill bit storage mechanism (9) is provided on the hydraulic walking frame (10). The longitudinal direction of the drill rod (3) in the storage state is parallel to the transverse direction of the hydraulic walking frame (10). The cantilever end of the top beam shaft (5) is located directly above the drill bit storage mechanism (9). Power is provided by the winch (61). The connecting piece (63) connects the drill rod (3). The lifting rope (62) transmits power to realize the lifting and lowering of the drill rod (3).

2. The low-headroom joint-type multi-shaft cement mixing pile machine according to claim 1, characterized in that, The tower (1) is hinged to the hydraulic walking base (10), and a lifting cylinder is provided between the tower (1) and the hydraulic walking base (10). The tower (1) can be rotated to be stacked on the hydraulic walking base (10).

3. A low-headroom, multi-shaft cement mixing pile machine with connecting rod as described in claim 2, characterized in that, The tower (1) is provided with a support part (12), which is hinged to the strut (7), and the strut (7) is hinged to the hydraulic walking base frame (10).

4. A low-headroom joint-type multi-axis cement mixing pile machine according to claim 3, characterized in that, The tower (1) is provided with an extension connection at the top, which can be connected to an extended derrick. The extended derrick is provided with a support (12). The top of the extended derrick can be detachably connected to the top beam shaft (5). The landing gear (2) can be slidably connected to the extended derrick.

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