Double-station static pile driver and construction method

Abstract

The invention belongs to the technical field of pile foundation construction, and discloses a double-station static pile driver and a pile pressing construction method.The double-station static pile driver comprises a main machine platform unit, a pile pressing operation unit and a hoisting operation unit, and the main machine platform unit, the pile pressing operation unit and the hoisting operation unit are modularly designed, are of a split structure and are detachably connected. The equipment structure and two construction methods are synergistically improved, modular design is adopted, assembly is carried out according to needs, the pile pressing operation unit and the hoisting operation unit can exchange stations, one static pile driver can have two stations, the two construction methods are implemented, two pile foundation construction equipment and the construction methods are synchronously combined into a whole, and the construction efficiency is improved. Therefore, the requirements of middle-position pile pressing construction and side pile position pile pressing construction in areas with limited side distance and clearance space can be met at the same time, one machine has two purposes, the construction efficiency and the construction quality are greatly improved, the utilization rate of equipment is improved, and the static pile pressing machine can be widely applied to manufacturing of small and medium-sized static pile pressing machines.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation construction, and in particular to a double-station static pile driver with modular design and convertible stations and a construction method. Background Art

[0002] Static pile drivers (referred to as pile drivers) are one of the heavy-duty pile foundation construction equipment. They are increasingly valued for their low noise, vibration-free, pollution-free and high construction efficiency. They rely on their own weight as a reaction force to press piles, and their pile pressing position has a relatively large impact on the overall center of gravity and construction method of the pile driver. Therefore, existing static pile drivers are all fixed structures and only perform pile pressing operations at one station in the middle. According to existing industry standards such as static pile driver equipment and methods, a technical prejudice has long been formed in this field, that is, static pile drivers can only have all parts fixedly connected, and each device can only use one method. Usually, they can only perform middle pile pressing operations, but not side pile construction operations, and vice versa. For example, the industry standard "JBT 8469-1996 Full Hydraulic Static Pile Driver" clearly stipulates the structure of static pile drivers, in which all parts are fixedly connected. The industry standard "JGJ / T394-2017 Technical Code for Static Pressure Pile Construction" regulates the pile driving method, and a pile driver has only one working station (middle) and one pile driving method; other industry monographs or textbooks have similar records, including "Modern Pile Driving Machinery" published by People's Communications Press in May 2004, and "Modern Pile Driving Machinery" published by Shanghai Jiaotong University Press in June 1997.

[0003] In the existing patent technologies, all of them adopt the overall fixed connection and only support a single construction method. For example, the Chinese patent application CN101092817A discloses a static hydraulic walking pile driver, whose platform is a thickened rectangular platform, the upper and lower parts of the jacking cylinder are connected to the platform as a whole, the upper part of the jacking cylinder is connected to the platform as a whole, and the part of the lower part of the jacking cylinder that passes through the platform is connected to the platform as a whole. The invention shows that the structures of its various parts are all fixedly connected, there is only one middle pile driving station, and the middle pile driving method is implemented. The various parts cannot be disassembled, and the pile driving construction of the side pile position cannot be carried out.

[0004] However, with many engineering projects, such as old city reconstruction, road and bridge construction, etc., it is necessary to deal with construction near the wall, or near the edge of the water, slope, corner and other places where the space is severely limited. When the pile driver is used for pile driving, it is usually necessary to adopt the "side pile" construction method of pile driving on one side of the pile driver; when the "side pile" (including corner pile) type pile foundation is used for pile driving, the existing technology of the middle pile position static pile driver cannot be used for construction because the pile position is very close to the edge of the pile driver and far away from the middle position of the pile driver. On the one hand, due to the space limitations of the length of the pile driver platform itself and the support legs, and on the other hand, there are many limitations such as the inability to obtain sufficient clearance space and maintain the center of gravity stable during the process of pile hanging and pile driving. The pile driver with the pile position set in the middle is actually unable to reach the pile position at the edge position and carry out construction.

[0005] In addition, the industry calls the distance from the center of the precast pile's entry point to the outermost edge of the equipment the edge distance. The edge distance is a very important control technical indicator in the construction process of inclined pile support for foundation pit support. Because the construction is limited by the red line range of the plot, especially in urban areas, the general red line range is 3.5 meters. Therefore, the smaller the edge distance, the smaller the space occupied in the foundation pit, and the larger the construction space. However, the existing middle pile position pile drivers cannot achieve a smaller distance to the edge because their pile positions are usually set in the middle, which greatly limits their scope of application and they cannot be directly used in the construction of side piles and corner piles. In order to solve the problem of side pile driving, a small number of static pile drivers offset the fixed position of the pile driving assembly to one side of the pile driver to reduce the minimum distance to the edge. However, even so, due to the limitations of their own structure (main engine support, long and short ships, counterweights, pile length, etc.) and clearance space, the minimum distance to the edge must be greater than 1 meter, which still cannot meet the needs of actual projects. The side piles and corner piles in most engineering construction projects require a minimum distance to the edge of 0.5 meters or less, and the actual clearance space for pile driving construction is also greatly limited.

[0006] The static pile drivers of the prior art have been around and used for decades, and the following industry practices have been formed over a long period of time: first, most of the static pile drivers are custom-designed and manufactured, and all components are fixedly connected and cannot be disassembled when leaving the factory, transported, and used, in order to meet the standard requirements of existing equipment and construction methods. Usually, only one pile driving station is set in the middle of the pile driver, and only one pile driving method (center pile driving) is supported, which is difficult to meet the construction needs of side piles and corner piles in actual projects; secondly, since the existing static pile drivers have many industry standards and industry practices, all parts of the static pile drivers are fixedly connected (usually firmly welded) when leaving the factory, and all parts are completely fixed, and the pile position and construction method are also completely fixed, and the overall Manufacturing, transportation and use. Although the existing static pile driver with the middle pile position pile driving construction process cannot meet the needs of side piles and corner piles, in most projects, the number of middle piles is much larger than the number of side piles. In most engineering projects with less stringent requirements, the middle pile process can be barely accepted. Therefore, the technical personnel in this field have no motivation to make a lot of improvements to the pile driver so that it can fully meet the construction needs of side piles. Third, the existing static pile drivers are all transported to the construction site as a whole by large transportation equipment such as trailers, and are loaded and unloaded and used as a whole. They can be used directly after arriving at the construction site without complicated adjustments, but the transportation cost is high. One large trailer can only transport one static pile driver.

[0007] Therefore, in existing projects that require the construction of side piles and corner piles, the requirements of a smaller distance to the edge (such as less than 1 meter) and a smaller clearance space are often not fully met, and there is currently no static pile driver specifically used for side pile construction. Even if the pile driver assembly of the existing middle pile driver can be simply transferred to a side position and transformed into a pile driver specifically used for side pile construction, this improvement poses a serious challenge to the structural stability and counterweight utilization of the entire pile driver. In addition, the pile driver specifically used for side pile construction is only equipped with one side pile position and only supports one side pile driving method. In this way, in a project, there will be a situation where it is necessary to purchase pile drivers for construction at two different pile positions at the same time. Because in the actual project construction process, the pile driving construction demand at the middle pile station accounts for the majority of the actual pile foundation construction, and the pile driving construction demand at the side pile station accounts for only a small proportion. If a static pile driver specifically for middle pile construction and a static pile driver specifically for side pile construction are set up on a construction site at the same time, it will inevitably greatly increase the equipment investment and scheduling, use and other costs of the project construction. The actual utilization rate of the side pile equipment is relatively low. Purchasing two types of pile drivers obviously does not meet the needs of modern pile foundation construction such as improving quality, increasing efficiency, reducing costs and protecting the environment. However, the static pile driver used only for middle pile construction cannot meet the pile foundation construction needs of diversified and difficult projects such as side pile construction. Therefore, the existing static pile drivers and the construction methods they support must be improved simultaneously. Summary of the invention

[0008] The purpose of the present invention is to address the above-mentioned deficiencies and provide a double-station static pile driver and construction method with a modular split design and convertible stations, overcome the technical prejudice of the industry, and through a breakthrough improvement in the equipment structure, enable one device to implement two construction methods. The main parts of the pile driver all adopt a modular, split design and can be assembled as needed, so that one static pile driver can have two stations and implement two construction methods, and synchronize the two pile foundation construction equipment and construction methods into one, thereby being able to simultaneously meet the needs of mid-position pile driving construction and side pile driving construction with a smaller distance to the edge and limited clearance space, greatly improving construction efficiency and construction quality, increasing equipment utilization, saving pile driving equipment investment and construction costs, and solving the above-mentioned technical problems in many aspects.

[0009] The present invention provides the following technical solutions:

[0010] A dual-station static pile driver, comprising a modular design, split structure, detachably connected host platform unit, pile driving unit, and hoisting unit; It comprises a modular design, independent structure, detachably connected host platform unit, pile driving unit, and hoisting unit;

[0011] The host platform unit comprises a host platform bracket with a rectangular overall shape, a middle station groove is provided at the middle position of the host platform bracket in the horizontal direction, and a side station groove is provided at a side position of one end;

[0012] The middle station groove and the side station groove both penetrate the thickness direction of the mainframe platform bracket, so that the upper and lower spaces of the grooves are connected to form a complete clearance, respectively constituting the middle station and the side station;

[0013] The pile driving operation unit and the hoisting operation unit can be set at the middle workstation or the side workstation, and the workstations can be interchanged according to the changes of the pile position and the construction method, so as to implement the middle pile driving construction method or the side pile driving construction method.

[0014] A double-station static pile construction method, characterized in that it comprises the following steps:

[0015] S1. Preparation of a double-station static pile driver

[0016] The dual-station static pile driver described in the modular design and preparation includes at least the following components which are designed in a split type and are independent of each other:

[0017] Host platform unit, pile driving unit, and lifting unit;

[0018] S2. Transport each part to the construction site

[0019] Transport the host platform unit, pile driving unit and hoisting unit to the construction site;

[0020] S3, construction work at the first workstation

[0021] According to the topographic conditions and construction requirements of the construction site, choose one of the following construction methods: middle pile position and middle pile driving method, or side pile position and side pile driving method;

[0022] According to the selected pile position and its corresponding construction method, the pile driving unit and the hoisting unit are respectively set on the main platform unit, connected, fixed, and assembled into an integrated pile driver;

[0023] Among them, when the middle pile position and the middle pile driving construction method are selected, the pile driving operation unit is set at the middle work station, and the hoisting operation unit is set at the side work station;

[0024] When the edge pile position and edge pile driving construction method are selected, the hoisting operation unit will be set at the middle position, and the pile driving operation unit will be set at the edge position;

[0025] Then the pile driver performs pile driving construction operation in the first working position and the first working method selected above;

[0026] S4, construction work at the second station

[0027] According to the terrain conditions and construction requirements of the construction site, when it is necessary to switch to the second workstation for construction, the workstation and construction method of the pile driver will be converted synchronously:

[0028] The pile driving unit and the hoisting unit are removed from the host platform unit, and then the positions are exchanged and they are reset on the host platform unit. After they are connected and fixed again, they are reassembled into an integral pile driver, so that the pile driver can perform pile driving construction operations at the second working position and the second working method.

[0029] When it is necessary to convert the pile driver working at the second workstation to working at the first workstation, the steps of removing the pile driving unit and the hoisting unit from the main platform unit and then exchanging their positions are repeated;

[0030] S5. Disassembled module transportation

[0031] After the pile driver has completed the on-site construction work, the pile driving unit and the hoisting unit are removed from the main platform unit at the construction site and transported to the next construction site. Steps S3-S4 are repeated to perform pile driving operations at different workstations.

[0032] It should be noted that:

[0033] The aforementioned “first, second…” do not represent specific quantity and order, but are only used to distinguish the names.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present invention are usually placed when in use, or are directions or positional relationships usually understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] The aforementioned “lateral” direction refers to the left-right direction of the variable amplitude static pile driver of the present invention.

[0036] The aforementioned “longitudinal” direction refers to the front-to-back direction of the variable amplitude static pile driver of the present invention.

[0037] The advantages or principles of the present invention are described below:

[0038] 1. The double-station static pile driver and pile driving construction method provided by the present invention aim at the problems of small distance to the edge and restricted clearance space in the construction of side piles, corner piles, suspended piles, etc. By improving the structure and method of the pile driver simultaneously, three standardized and modular split units can be assembled into two pile drivers with different structures, and a corresponding construction method is implemented respectively. The pile driving operation unit and the hoisting operation unit can be arbitrarily set at the middle station or the end station, and the stations can be interchanged according to the changes of the pile position and the construction method, so as to implement the middle-position pile driving construction method or the side-position pile driving construction method. One machine has two uses, which saves equipment investment, improves construction efficiency, saves construction costs such as scheduling of different equipment, and can be widely used in the manufacture of small and medium-sized static pile drivers.

[0039] 2. Through the modular, split and standardized design and manufacturing of the pile driving operation unit and the lifting operation unit, the three main components can be independently manufactured, split transported and installed and disassembled, and each unit can be connected as a whole on demand. When in use, it can be flexibly assembled on the middle station or side station of the frame according to the construction requirements of the middle pile and the side pile, and the pile driving construction of the middle pile or the side village can be carried out respectively, realizing one machine for multiple uses, improving the equipment utilization rate and reducing the construction cost; each main component unit of the present invention can be flexibly transported in a split and independent manner, which greatly reduces the maximum height and weight of the piece. There is no need to use large-scale transportation equipment, and small-scale transportation equipment can be used for transportation. It can also solve the problem of high overall transportation cost and inconvenience of transportation of existing pile drivers.

[0040] 3. The present invention mainly overcomes the technical prejudice of the industry (the pile driving mechanism and the pile hoisting mechanism are fixedly connected to the frame platform (welded at a fixed position and cannot be moved). From the overall perspective, the split, modular and standardized design ideas are used to divide the whole into three components, and the three components are connected in a detachable manner. Each part can be installed and used according to needs at the project construction site, and can be disassembled and reinstalled and used again after changing the work position; during each installation, only one external crane is required to install the hoisting operation unit in place first, and the hoisting operation unit can subsequently hoist the pile driving operation unit by itself, which also reduces the dependence on external support equipment; at the same time, the coverage range of the slewing arm in the hoisting operation unit provided by the present invention can reach the pile driving opening of the pile driving operation unit. On the one hand, it can make full use of the slewing arm and reduce the power required for the hoisting operation unit. On the other hand, it can also make full use of the effective clearance space above and below the host platform unit, reduce construction obstacles, and improve construction efficiency.

[0041] 4. The present invention designs two standard workstations on the host platform unit, and each standard workstation is provided with the same detachable connection structure, and cooperates with the external standard oil pressure and cable interface, so that both standard workstations can smoothly connect and operate the pile driving unit or the hoisting unit; and supports the position interchange of the pile driving unit and the hoisting unit to meet the different construction requirements of the middle pile and the side pile. The present invention sets the distance between the middle workstation and the side workstation, on the one hand, to achieve the stability of the center of gravity of the equipment during the two pile driving operation methods, and on the other hand, to effectively utilize the clearance space of the upper and lower parts of the pile driver, and can also effectively utilize the effective coverage range of the slewing arm, and improve the utilization rate of the counterweight.

[0042] 5. The present invention standardizes the overall structure and dimensions of the main platform unit, the pile driving unit and the hoisting unit, and reserves connection components or accommodating and rotating operation spaces with the same structure at each workstation of the main platform unit, so that the three units can be freely matched, and the pile driving unit and the hoisting unit can be installed and operated at any workstation; at the same time, the pile body can reach and align with the pile position by adjusting the walking mechanism accordingly; and the adjustment of the counterweight mechanism can keep the overall center of gravity stable and improve the utilization rate of the counterweight during the pile driving operation. In summary, the present invention supports the free interchange of the workstations of the pile driving unit and the hoisting unit on the same main platform unit through various improved designs, based on the design of the three units and the setting of two standard workstations, thereby reducing the number of construction equipment, improving construction efficiency, improving construction quality, and saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1It is a schematic diagram of the overall appearance of a side pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0044] Figure 2 It is a schematic diagram of the main structure of a side pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0045] Figure 3 It is a schematic diagram of the top structure of a side pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0046] Figure 4 It is a schematic diagram of the top structure of a side pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0047] Figure 5 It is a side structural schematic diagram of a side pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0048] Figure 6 It is a schematic diagram of the assembly structure of a side pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0049] Figure 7 It is a schematic diagram of the overall appearance structure of the main platform unit of the double-station static pile driver according to an embodiment of the present invention.

[0050] Figure 8 It is a schematic diagram of the overall appearance structure of the host platform bracket in the host platform unit of an embodiment of the present invention.

[0051] Fig. 9 It is a schematic diagram of the top view of the structure of the host platform bracket in the host platform unit according to an embodiment of the present invention.

[0052] Fig.10 It is a schematic diagram of the main structure of the host platform bracket in the host platform unit of an embodiment of the present invention.

[0053] Fig.11 It is a bottom view structural diagram of a host platform bracket in a host platform unit according to an embodiment of the present invention.

[0054] Fig.12 It is a schematic diagram of the overall appearance of a middle pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0055] Fig.13 It is a schematic diagram of the main structure of a middle pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0056] Fig.14 It is a schematic diagram of the top structure of a middle pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0057] Fig.15It is a side structural schematic diagram of a middle pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0058] Fig.16 It is a schematic diagram of the assembly structure of a middle pile position pile driver in a double-station static pile driver according to an embodiment of the present invention.

[0059] Fig.17 The figure is a schematic diagram of the overall appearance structure of the pile driving operation unit of the double-station static pile driver according to an embodiment of the present invention.

[0060] Fig.18 It is a schematic diagram of the main structure of the pile driving operation unit of the double-station static pile driver according to an embodiment of the present invention.

[0061] Fig.19 It is a side structural schematic diagram of a pile driving operation unit of a double-station static pile driver according to an embodiment of the present invention.

[0062] Fig. 20 It is a schematic diagram of the top structure of the pile driving operation unit of the double-station static pile driver according to an embodiment of the present invention.

[0063] Fig.21 The figure is a schematic diagram of the assembly structure of the pile driving operation unit of the double-station static pile driver according to an embodiment of the present invention.

[0064] Fig. 22 It is a schematic diagram of the overall appearance structure of the hoisting operation unit in the double-station static pile driver according to an embodiment of the present invention.

[0065] Fig.23 It is a schematic diagram of the main structure of the hoisting operation unit in the double-station static pile driver according to an embodiment of the present invention.

[0066] Fig.24 It is a schematic diagram of the top structure of the hoisting operation unit in the double-station static pile driver according to an embodiment of the present invention.

[0067] Fig.25 It is a side structural schematic diagram of a hoisting operation unit in a double-station static pile driver according to an embodiment of the present invention.

[0068] Description of reference numerals:

[0069] 1. Host platform unit, 11. Host platform bracket, 12. Middle station groove, 13. Middle station support, 14. Side station groove, 15. Side station support, 16. Side opening of groove, 17. Traveling mechanism, 18. Counterweight mechanism;

[0070] 2. Pile driving unit; 21. Pile driver assembly; 22. Pile driver assembly lug; 23. Pile clamp opening;

[0071] 3. Hoisting operation unit; 31. Crane assembly, 32. Slewing seat, 33. Slewing arm, 34. Crane bracket, 35. Crane support ear. DETAILED DESCRIPTION

[0072] The embodiments of the present invention are described in detail below.

[0073] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0074] Example 1

[0075] See also Figures 1 to 25 As shown, the double-station static pile driver provided in the embodiment of the present invention is specifically a small and medium-sized static pile driver, including a modular design, a split structure, a detachably connected host platform unit 1, a pile driving operation unit 2, and a hoisting operation unit 3;

[0076] The host platform unit 1 comprises a host platform support 11 with a rectangular overall shape, a middle station groove 12 (with a rectangular shape) is provided at the middle position of the host platform support 11 in the horizontal direction, and a side station groove 14 (with a rectangular shape) is provided at one end side position;

[0077] The middle station groove 12 and the side station groove 14 both penetrate the thickness direction of the main platform bracket 11, so that the upper and lower spaces of the grooves are connected to form a complete clearance, which respectively constitute the middle station and the side station. The upper and lower clearance spaces are used to accommodate the pile driving operation unit 2 and the lifting operation unit 3 on the one hand, and provide necessary working clearance space for the pile driving operation unit 2 and the lifting operation unit 3 when performing pile driving operations on the other hand.

[0078] At the middle part (close to the center position in the horizontal direction) and the end side part (far away from the center position and reaching the outer side in the horizontal direction) of the main platform unit 1, there is respectively provided a work station for connecting and fixing the pile driving operation unit 2 or the lifting operation unit 3, of which the one arranged in the middle position is the middle work station, and the one arranged at the end side is the side work station. Both work stations are provided with a accommodating structure that is compatible with the shape and space of the pile driving operation unit 2 or the lifting operation unit 3, that is, a corresponding work station groove 12 or 14 arranged on the work station.

[0079] The pile driving operation unit 2 and the lifting operation unit 3 can be set at the middle workstation or the edge workstation through a detachable connection structure, and the workstations can be interchanged according to changes in the pile position and the construction method, and are used to implement the middle pile driving construction method or the edge pile driving construction method respectively.

[0080] The host platform unit 1 further includes a middle station support 13 and a side station support 15, both of which are arranged on the upper surface of the host platform bracket 11;

[0081] The middle station support 13 is arranged around the middle station groove 12, including a plurality of, in this embodiment, four, surrounding and symmetrically arranged on two sides of the middle station groove 12;

[0082] There are also multiple edge station supports 15, which are arranged around and symmetrically on the two sides of the edge station groove 14;

[0083] When the pile driving operation unit 2 or the lifting operation unit 3 is arranged at the middle station and the side station, they are detachably connected to the main platform bracket 11 through their own supporting ears (pile driver assembly supporting ears 22 or crane supporting ears 35) and the middle station support 13 or the side station support 15; the supporting ears are inserted into the middle station support 13 or the side station support 15, and then fixed with axle pins.

[0084] The pile driving unit 2 comprises a pile driver assembly 21. On both sides of the middle section of the pile driver assembly 21, there are pile driver assembly ears 22 for detachably connecting with the middle station support 13 or the side station support 15.

[0085] When the pile driver assembly 21 is arranged at the middle station or the side station, it is integrally embedded in the middle station groove 12 or the side station groove 14, and is detachably mounted on the host platform bracket 11 through the connection of the pile driver assembly lug 22 with the middle station support 13 or the side station support 15 respectively;

[0086] The upper section of the pile driver assembly 21 extends upward from the upper surface of the main platform bracket 11, the lower section extends downward from the lower surface of the main platform bracket 11, and the middle section is flush with the thickness of the main platform bracket 11; each work station can provide necessary space for the pile driver assembly 21 on the one hand, and provide support for the pile driver assembly 21 on the other hand. The lower part of the pile driver assembly 21 extends into the lower section of the work station groove, which can lower the center of gravity and be closer to the pile position, which is conducive to faster alignment of the prefabricated piles with the pile position and precise construction.

[0087] The hoisting operation unit 3 includes a crane assembly 31, which includes a slewing seat 32, a slewing arm 33, a crane support 34, and a plurality of crane ears 35 symmetrically arranged at the end of the crane support;

[0088] When the crane assembly 31 is arranged at the middle station or the side station, it is arranged as a whole just above the middle station groove 12 or the side station groove 14, and is detachably mounted on the main platform bracket 11 through the connection of the crane lug 35 with the middle station support 13 or the side station support 15 respectively;

[0089] For the crane assembly 31 arranged at any workstation on the main platform support 11, after the overall pile driver is assembled, the slewing area of ​​the slewing arm 32 is clear, and the slewing range of the slewing arm 32 covers the position of the pile clamping opening 23 arranged on the pile driver assembly 21 at another workstation, which can effectively utilize the coverage range of the slewing arm, reduce the tonnage requirement of the crane, and reduce the cost of the overall equipment; the slewing arm can better carry out the hoisting operation of the prefabricated pile or the pile driver assembly 21.

[0090] In order to facilitate the hoisting operation of the pile driver assembly 21, the side station groove 14 is an open rectangular groove with an opening on one side, and a groove side opening 16 is provided on the side flush with the side of the main platform bracket 11. When the pile driver assembly 21 is installed, the middle section of the pile driver assembly 21 can enter the opening 16 in the horizontal direction, which can be quickly positioned and locked, and prevent the pile driver assembly 21 from hitting the main platform bracket 11; the opening direction of the pile clamping opening 23 on the pile driver assembly 21 is consistent with the direction of the groove side opening 16 of the side station groove 14, which is conducive to the subsequent prefabricated pile hoisting and pile driving operations.

[0091] The fixed accommodation structure (the middle station groove 12 and the side station groove 14) arranged at each workstation of the main platform unit 1 is a hollow accommodation structure that penetrates from top to bottom, and is used to arrange the pile driving operation unit and the hoisting operation unit at the workstation of the main platform unit, and to provide a clearance space for the pile driving operation unit and the hoisting operation unit to accommodate and operate the partial structure extending above and below the horizontal end surface of the main platform unit 1.

[0092] A double-station static pile construction method, which adopts the above-mentioned double-station static pile construction, comprises the following steps:

[0093] S1. Preparation of a double-station static pile driver

[0094] The dual-station static pile driver described in the modular design and preparation includes the following components of a split structure and each of which is independent:

[0095] Host platform unit 1, pile driving unit 2, lifting unit 3;

[0096] S2. Transport each component to the construction site

[0097] Use small and medium-sized transport equipment (such as small and medium-sized trailers, etc.) to transport the host platform unit 1, the pile driving operation unit 2, and the lifting operation unit 3 to the construction site respectively;

[0098] S3, construction work at the first workstation

[0099] According to the topographic conditions and construction requirements of the construction site, choose one of the following construction methods: middle pile position and middle pile driving method, or side pile position and side pile driving method;

[0100] According to the selected pile position and its corresponding construction method, the pile driving unit 2 and the hoisting unit 3 are respectively set on the main platform unit 1, connected, fixed, assembled into an integral pile driver, and then the pile driving operation is started;

[0101] When the middle pile position and the middle pile driving construction method are selected, the pile driving operation unit 2 is set at the middle work station, and the hoisting operation unit 3 is set at the side work station;

[0102] When the edge pile position and edge pile driving construction method are selected, the hoisting operation unit 3 is set at the middle position, and the pile driving operation unit 2 is set at the edge position;

[0103] Then the pile driver performs pile pressing construction operation in the first working position (side pile working position) and the first working method (side pile pressing working method) selected above;

[0104] In this embodiment, the first workstation selects the edge pile position and the edge pile driving construction method. At this time, the hoisting operation unit 3 is set at the middle workstation, and the pile driving operation unit 2 is set at the edge workstation. The pile driving operation unit can not only construct the pile position with a distance to the edge less than 1 meter, but also can further construct the suspended pile position (the distance to the edge is a negative value) on the outside of the vertical support surface such as the foundation pit. Specifically, the pile driving opening 23 of the pile driving operation unit 2 is suspended and aligned with the suspended pile position outside the vertical support surface (or slope, wall, etc.) through the walking mechanism, and then the pile hoisting and pile driving operations are performed, thereby completing the suspended edge pile construction that the existing static pile driver cannot complete at all.

[0105] S4, construction work at the second station

[0106] According to the terrain conditions and construction requirements of the construction site, when it is necessary to switch to the second workstation (middle pile workstation) for construction work, the workstation and construction method of the pile driver are synchronously converted:

[0107] The pile driving unit 2 and the hoisting unit 3 are removed from the main platform unit 1, and then their positions are exchanged and they are reset on the main platform unit 1 (the pile driving unit 2 and the hoisting unit 3 are respectively installed at the original workstations of the other party). Specifically, the pile driving unit 2 is set at the middle workstation, and the hoisting unit 3 is set at the side pile workstation. After being connected and fixed to the main platform unit 1 again, they are reassembled into an integral pile driver (a pile driver of a new structure), and then the pile driver is made to perform pile driving construction operations at the second workstation (middle pile workstation) and the second working method (middle pile driving working method);

[0108] S5. Disassembled module transportation

[0109] The pile driving operations of multiple pile positions of a project are completed in sequence. After all the pile driving operations are completed, the pile driver that has completed the on-site construction operation will be disassembled from the main platform unit at the construction site, and divided into three independent parts. Small and medium-sized transportation equipment is used to transport them separately or together to the next construction site, and steps S3-S4 are repeated to carry out pile driving operations at different positions. During transportation, the above three units of multiple pile drivers can be stacked to improve the space utilization efficiency of the transportation equipment and reduce transportation costs.

[0110] In other embodiments, the first work station and the first working method may also be a center pile work station and a center pile driving method; the second work station may also be a side pile work station and a side pile driving method, which may be specifically determined according to the project construction site and construction requirements, thereby achieving dual uses of one machine and being able to implement pile driving construction at sites where the edge distance is less than 1 meter or even a negative value (slopes, foundation pits, etc. suspended).

[0111] Example 2

[0112] The double-station static pile driver and double-station static pile driving construction method provided in this embodiment are based on Embodiment 1, wherein the main engine platform unit further comprises a traveling mechanism 17, comprising a long ship traveling device and a short ship traveling device, both of which are detachably connected to the main engine platform support 11; the long ship traveling device and the short ship traveling device of the traveling mechanism 17 jointly lift the main engine platform support 11 upward to make it leave the ground, and support the main engine platform unit 1 and the pile driving operation unit 2 and the hoisting operation unit arranged on the main engine platform unit 1, and move them forward, backward, left and right together, so that the pile driver can align with the pile position before performing the pile driving operation; and after the operation is completed, the pile driver can move to the next pile position to continue the construction, etc.

[0113] The host platform bracket 11 is a horizontally arranged steel bracket with a rectangular overall shape.

[0114] The dual-station static pile construction method is based on Example 1, and each step further includes:

[0115] S1-1, preparing the walking mechanism 17 of the host platform unit 1;

[0116] S2-1, transporting the components of the pile driver including the traveling mechanism 17 to the construction site;

[0117] S3-1, first connect the walking mechanism 17 to the main platform bracket 11, support the main platform bracket 11, and then respectively set the pile driving unit 2 and the hoisting unit 3 on the main platform unit 1 to assemble into an integral pile driver; the walking mechanism 17 carries the pile driving unit 2 and the hoisting unit 3 through the main platform bracket 11 to perform the pile driving construction operation at the first work station;

[0118] S4-1, when it is necessary to switch the working position, keep the connection between the walking mechanism 17 and the main platform bracket 11, interchange the pile driving unit and the hoisting unit at the working position of the main platform unit, and assemble them into an integrated pile driver; the walking mechanism carries the pile driving unit and the hoisting unit to perform the pile driving construction work at the second working position;

[0119] S5-1, first remove the pile driving operation unit and the hoisting operation unit from the main platform unit, then remove the traveling mechanism 17 from the main platform bracket 11, and transport them separately; after arriving at the new construction site, repeat steps S3-1 and S4-1.

[0120] The specific structure of the walking mechanism 17 and the connection method with the host platform bracket 11, the operation and control method, etc. are all existing technologies and will not be described in detail.

[0121] Example 3

[0122] The double-station static pile driver and double-station static pile driving construction method provided in this embodiment are based on Embodiment 2, wherein the main engine platform unit 11 further comprises a counterweight mechanism 18, which comprises a counterweight beam and a counterweight block, both of which are detachably connected to the main engine platform support 11; the counterweight mechanism 18 is arranged at different positions of the main engine platform support 11 according to different pile driving stations, so as to provide deadweight for the pile driver and keep the center of gravity of the pile driver balanced.

[0123] The structure including the counterweight beam, the counterweight block, etc. and the connection method with the host platform bracket 11, etc., can be processed according to conventional techniques.

[0124] The dual-station static pile construction method includes the following steps:

[0125] S1-2, preparing the counterweight mechanism 18 (including a plurality of counterweight beams and counterweight blocks) of the host platform unit;

[0126] S2-2, transporting the components including the counterweight mechanism 18 to the construction site;

[0127] S3-2, first set the pile driving unit 2 and the hoisting unit 3 on the main platform unit 1, and then set the counterweight mechanism 18 to different positions of the main platform bracket 11 as needed to assemble an integral pile driver; the counterweight mechanism 18 increases the deadweight of the pile driver and maintains the overall center of gravity stable during the construction process, and then the pile driving construction operation at the first station is carried out;

[0128] S4-2, when the positions of the pile driving unit 2 and the hoisting unit 3 on the host platform unit 1 are interchanged, the position of the counterweight mechanism 18 on the host platform unit is adjusted accordingly, and the pile driver is assembled into an integral pile driver, and then the pile driving operation at the second position is performed;

[0129] S5-2. When all pile driving operations at a construction site are completed, first remove the pile driving unit 2 and the hoisting unit 3 from the main platform unit 1, then remove the counterweight mechanism 18 from the main platform bracket 11, and transport them separately; after arriving at the new construction site, repeat steps S3-2 and S4-2.

[0130] The double-station static pile driver and pile driving construction method provided by the above-mentioned embodiments of the present invention focus on the problems of small distance to the edge and restricted clearance space in the construction of side piles and corner piles. Through the simultaneous improvement of the pile driver structure and the working method, three split units with standardized and modular designs can be assembled into two pile drivers with different structures, and a corresponding construction method is implemented respectively. The pile driving operation unit and the lifting operation unit can be arbitrarily set at the middle station or the side station, and the stations can be interchanged according to the changes in the pile position and the construction method, corresponding to the implementation of the middle pile driving construction method or the side pile driving construction method. One machine has two uses, and the height of the largest piece can be greatly reduced during transportation, which is easy to ship and saves equipment investment. At the same time, it also improves construction efficiency and saves construction costs such as scheduling of different equipment.

[0131] The prototype of the present invention has been tested on the company's internal R&D and testing site. Practical application shows that the dual-station static pile driver provided by the present invention can be used in construction scenarios in areas where the distance to the edge and clearance are severely limited (especially in urban areas, slopes, foundation pits, etc.). It can greatly reduce the distance to the edge of the pile driving point when operating on side piles (corner piles), and can also perform construction at the conventional middle station. One machine has two uses, which can improve construction efficiency, improve construction quality, reduce the number of construction equipment, and save construction costs.

[0132] The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereto; any replacement and improvement made on the basis of not violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A double-station static pile driver, characterized in that: It includes modular design, split structure, detachable connected host platform unit, pile driving unit, and lifting unit; The host platform unit comprises a host platform bracket with a rectangular overall shape, a middle station groove is provided at the middle position of the host platform bracket in the horizontal direction, and a side station groove is provided at a side position of one end; The middle station groove and the side station groove both penetrate the thickness direction of the mainframe platform bracket, so that the upper and lower spaces of the grooves are connected to form a complete clearance, respectively constituting the middle station and the side station; The pile driving operation unit and the hoisting operation unit can be set at the middle workstation or the side workstation, and the workstations can be interchanged according to the changes of the pile position and the construction method, so as to implement the middle pile driving construction method or the side pile driving construction method.

2. The double-station static pile driver according to claim 1, characterized in that: The host platform unit also includes a middle station support and a side station support, both of which are arranged on the upper surface of the host platform bracket; Wherein, the middle station support is arranged around the middle station groove; The edge station support is arranged around the edge station groove; The pile driving operation unit or the hoisting operation unit is arranged at the middle station and the side station, and is detachably connected to the main platform bracket 11 through the middle station support or the side station support respectively.

3. The double-station static pile driver according to claim 2, characterized in that: The pile driving operation unit comprises a pile driving device assembly, and the two side surfaces of the middle section of the pile driving device assembly are respectively provided with pile driving device assembly support ears; When the pile driver assembly is arranged at the middle station or the side station, it is integrally embedded in the middle station groove or the side station groove, and is detachably mounted on the main platform bracket through the connection of the pile driver assembly lugs with the middle station support or the side station support respectively; The upper section of the pile driver assembly extends upward from the upper surface of the main engine platform bracket, the lower section extends downward from the lower surface of the main engine platform bracket, and the middle section is flush with the thickness of the main engine platform bracket.

4. The double-station static pile driver according to claim 2, characterized in that: The hoisting operation unit comprises a crane assembly, which comprises a slewing seat, a slewing arm, a crane support, and a crane support lug arranged at the end of the crane support; When the crane assembly is arranged at the middle station or the side station, it is arranged as a whole just above the middle station groove or the side station groove, and is detachably mounted on the main platform bracket through the connection of the crane support ears with the middle station support or the side station support; The slewing area of ​​the slewing arm of the crane assembly set at any workstation on the main platform bracket is clear, and the slewing range of the slewing arm covers the pile clamping opening position set on the pile driver assembly at another workstation.

5. The double-station static pile driver according to any one of claims 1 to 4, characterized in that: The host platform unit also includes a walking mechanism and a counterweight mechanism, both of which are detachably connected to the host platform bracket; the walking mechanism lifts the host platform bracket upward and leaves the ground; the counterweight mechanism is arranged at different positions of the host platform unit to provide counterweight for the host platform unit and maintain the center of gravity balance.

6. The double-station static pile driver according to claim 5, characterized in that: The edge station groove is an open rectangular groove with an opening on one side, and a groove side opening is provided on one side that is flush with the side of the host platform bracket; The opening direction of the pile clamping opening on the pile driver assembly is consistent with the opening direction of the groove side edge of the edge station groove.

7. A double-station static pile construction method, characterized in that: The following steps are involved: S1. Preparation of a double-station static pile driver The dual-station static pile driver according to any one of claims 1 to 6 is modularly designed and manufactured, and comprises at least the following components of a split structure and each of which is independent: Host platform unit, pile driving unit, and lifting unit; S2. Transport each component to the construction site Transport the host platform unit, pile driving unit and hoisting unit to the construction site; S3, construction work at the first workstation According to the topographic conditions and construction requirements of the construction site, choose the middle pile position and the middle pile driving construction method, or the side pile position and the side pile driving construction method; According to the selected pile position and its corresponding construction method, the pile driving unit and the hoisting unit are respectively set on the main platform unit, connected, fixed, and assembled into an integrated pile driver; Among them, when the middle pile position and the middle pile driving construction method are selected, the pile driving operation unit is set at the middle work station, and the hoisting operation unit is set at the side work station; When the edge pile position and edge pile driving construction method are selected, the hoisting operation unit will be set at the middle position, and the pile driving operation unit will be set at the edge position; Then the pile driver performs pile driving construction operation in the first working position and the first working method selected above; S4, construction work at the second station According to the terrain conditions and construction requirements of the construction site, when it is necessary to switch to the second workstation for construction, the workstation and construction method of the pile driver will be converted synchronously: The pile driving operation unit and the hoisting operation unit are removed from the main platform unit, then swapped and reset on the main platform unit. After being reconnected and fixed, they are reassembled into an integral pile driver, so that the pile driver can perform pile driving construction operations in the second working position and the second working method.

8. The double-station static pile construction method according to claim 7 is characterized in that: It also includes the following steps: S5. Disassembled module transportation After the pile driver has completed the on-site construction work, the pile driving unit and the hoisting unit are removed from the main platform unit at the construction site and transported to the next construction site. Steps S3-S4 are repeated to perform pile driving operations at different workstations.

9. The double-station static pile construction method according to claim 8, characterized in that: The host platform unit also includes a walking mechanism, and each step also includes: S1-1. Prepare the walking mechanism of the host platform unit; S2-1. Transport all parts including the traveling mechanism to the construction site; S3-1, first connect the traveling mechanism to the main platform bracket, support the main platform bracket, and then respectively set the pile driving operation unit and the hoisting operation unit on the main platform unit to assemble into an integral pile driver; the traveling mechanism carries the pile driving operation unit and the hoisting operation unit to perform the pile driving construction operation at the first work station; S4-1, when it is necessary to change the working position, keep the connection between the walking mechanism and the main platform bracket 11, interchange the working positions of the pile driving unit and the hoisting unit on the main platform unit, and assemble them into an integrated pile driver; the walking mechanism carries the pile driving unit and the hoisting unit to perform the pile driving construction work at the second working position; S5-1, first remove the pile driving operation unit and the lifting operation unit from the main platform unit, then remove the walking mechanism from the main platform bracket, and transport them separately; after arriving at the new construction site, repeat steps S3-1 and S4-1.

10. The double-station static pile construction method according to claim 9, characterized in that: The host platform unit also includes a counterweight mechanism, and each step also includes: S1-2, preparing the counterweight mechanism of the host platform unit; S2-2, transport all parts including the counterweight mechanism to the construction site; S3-2, first install the pile driving unit and the hoisting unit on the main platform unit, and then install the counterweight mechanism on the main platform bracket to assemble the whole pile driver; the counterweight mechanism increases the deadweight of the pile driver and keeps the overall center of gravity stable during the construction process, and performs the pile driving operation at the first station; S4-2, when the positions of the pile driving unit and the hoisting unit on the main platform unit are interchanged, the position of the counterweight mechanism is adjusted accordingly, and the pile driver is assembled into an integral pile driver to perform the pile driving operation at the second position; S5-2, first remove the pile driving operation unit and the hoisting operation unit from the main platform unit, then remove the counterweight mechanism from the main platform bracket, and transport them separately; after arriving at the new construction site, repeat steps S3-2 and S4-2.

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