Earth ramming device and earth ramming method for soft stratum backfill soil construction

Abstract

The invention provides an earth ramming device for soft stratum backfill earth construction. The earth ramming device comprises a main body, an earth ramming assembly and a plurality of positioning assemblies. The positioning assembly comprises a rotating seat, a moving seat and a drill rod; the rotating seat is rotationally connected to the main body and is in transmission connection with a first swing driving component for driving the rotating seat to swing; the moving seat is slidably connected to the rotating seat and is in transmission connection with a first linear driving component; the drill rod is rotationally connected to the movable base, and the axial direction and the rotating axial direction of the drill rod are both parallel to the sliding direction of the movable base. Wherein the drill rod is in transmission connection with a rotation driving component used for driving the drill rod to rotate, so that the drill rod can be screwed into or out of the ground; in addition, when the rotating seat is in the horizontal state, the drill rod can avoid the ground. According to the earth ramming device for soft stratum backfill earth construction and the earth ramming method, the positioning assembly can play a positioning and supporting role during construction, so that the device is not prone to inclination, the compactness of backfill earth is more uniform after the backfill earth is rammed, and the construction quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and more specifically, relates to a tamping device and a tamping method for backfill construction in soft strata. Background Art

[0002] Backfill construction in soft strata refers to backfill engineering carried out in soft strata including loose sand, clay or other soils with low bearing capacity. The characteristic of this backfill is that during the backfill and construction process, the soil may become fluidized due to improper construction or soil properties, that is, the soil loses its original structural stability and becomes fluid.

[0003] Soft strata usually have lower bearing capacity and higher compressibility, which may cause the soil to settle or deform unevenly after construction. At present, tamping devices are generally used to increase the density of the soil to improve the above problems. The tamping process can reduce the gaps between soil particles, thereby improving the bearing capacity and stability of the soil.

[0004] The inventors have found that most of the current tamping devices usually use wheels or tracks to move the device for ease of movement during use, and do not have a structure to provide fixed support. Therefore, when tamping backfill soil in soft strata, the device is easily tilted due to ground inclination or soil flow, resulting in uneven density of the backfill soil after tamping, affecting the construction quality. Summary of the invention

[0005] The object of the present invention is to provide a tamping device and a tamping method for backfill construction in soft strata, so as to solve the technical problem in the prior art that the tamping device is easily tilted during use due to reasons such as ground inclination or soil flow, thereby causing uneven density of the backfill after tamping, affecting the construction quality.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is to provide a tamping device for backfilling soil in soft strata, comprising: A main body for traveling above the backfill soil, and a ramming assembly arranged on the main body for applying a force toward the backfill soil; characterized in that the main body is also provided with a plurality of positioning assemblies for connecting with the backfill soil, and the positioning assemblies include: A rotating seat, rotatably connected to the outer side surface of the main body facing the horizontal direction, and transmission-connected to a first swing driving member for driving the rotating seat to swing to a horizontal state or a vertical state; a moving seat, slidably connected to the rotating seat, and drivingly connected to a first linear driving member, so that the moving seat can move in a direction perpendicular to the rotating axis of the rotating seat; when the rotating seat is in the horizontal state, the moving direction of the moving seat is parallel to the moving direction of the main body; when the rotating seat is in the vertical state, the moving direction of the moving seat is parallel to the up-down direction; and A drill rod is rotatably connected to the movable seat, and the axial direction and the rotational axial direction of the drill rod are both parallel to the sliding direction of the movable seat; The drill rod is transmission-connected with a rotation driving member for driving the drill rod to rotate forward or reversely, so that when the rotating seat is in the vertical state and the moving seat moves toward the ground, the drill rod can be screwed into the ground, and when the rotating seat is in the vertical state and the moving seat moves away from the ground, the drill rod can be screwed out of the ground; Furthermore, when the rotating seat is in the horizontal state, the drill rod is arranged away from the ground.

[0007] Preferably, the drill rod comprises: A connecting sleeve is rotatably connected to the movable seat, and the axial direction and the rotational axial direction of the connecting sleeve are parallel to the sliding direction of the movable seat; and An action rod section is slidably inserted in the connecting sleeve, and has a distance adjustment structure between the action rod section and the connecting sleeve for limiting the relative movement of the connecting sleeve and the action rod section, and also has a locking structure for limiting the relative rotation of the connecting sleeve and the action rod section; The action rod section has a spiral sheet located outside the connecting sleeve, so that the spiral sheet can be screwed into or out of the ground when the action rod section rotates or moves toward or away from the ground.

[0008] Preferably, the distance adjustment structure comprises: A driving screw rod is coaxially arranged inside the connecting sleeve and is transmission-connected to a first rotating motor for driving the driving screw rod to rotate; and A slot is provided on the inner end surface of the action rod section, and the active screw is inserted into the slot; and a driven nut threadedly connected to the active screw is fixedly connected to the opening of the slot, so that when the active screw rotates, the action rod section moves relative to the connecting sleeve.

[0009] Preferably, the locking structure comprises: a plurality of ridges, which are arranged on the inner wall of the connecting sleeve at intervals along the circumference of the connecting sleeve, and each of the ridges extends along the axial direction of the connecting sleeve; and A plurality of grooves are arranged on the outer wall of the action rod section at intervals along the circumference of the action rod section; Among them, the multiple grooves correspond one-to-one to the multiple ridges, and each of the grooves penetrates the inner end surface of the action rod section along the axial direction of the action rod section, so that when the action rod section is inserted into the connecting sleeve, each of the ridges is inserted into the corresponding groove to limit the relative rotation of the connecting sleeve and the action rod section.

[0010] Preferably, the main body is provided with a liquid storage component for containing liquid and discharging the liquid outward; the movable seat is fixedly provided with a liquid discharge tank which is in communication with the liquid storage component and the interior of the connecting sleeve, and the action rod section is provided with a water outlet hole which is in communication with the interior of the connecting sleeve; When the rotating seat is in the horizontal state, the liquid storage assembly can discharge the liquid and store it in the drainage tank; when the rotating seat is in the vertical state, the liquid in the drainage tank can flow into the connecting sleeve under the action of gravity, and be discharged through the water outlet as the action rod section rotates.

[0011] Preferably, the rotation drive mechanism comprises: an outer gear ring, coaxially disposed on the drill rod and fixedly connected to the drill rod; and The second rotating motor is fixedly arranged on the moving seat, and its power output axis is parallel to the moving direction of the moving seat; the power output end of the second rotating motor is connected to a driving gear meshing with the outer gear ring, so that when the second rotating motor is started, the drill rod rotates synchronously.

[0012] Preferably, the positioning component further comprises: A push rod is slidably disposed on the main body and is transmission-connected to a second linear drive member so as to be suitable for moving toward or away from the rotating seat; Wherein, a clamping groove is provided on the rotating seat; when the rotating seat is in the horizontal state and / or the vertical state, the clamping groove faces the push rod, so as to allow the push rod to be embedded and limit the rotation of the rotating seat relative to the main body.

[0013] Preferably, the rammed earth assembly comprises: An adjustment plate is slidably connected to the main body in an up-down direction and is transmission-connected to a lifting drive component; a swing arm is hinged on the adjustment plate, and the swing arm is transmission-connected to a second swing drive component; and The rammed earth plate is slidably connected to the swing arm along the length direction of the swing arm, and is transmission-connected to a reciprocating drive mechanism.

[0014] Preferably, there are two groups of positioning components, and the two groups of positioning components are arranged side by side on both sides of the main body in a horizontal direction.

[0015] In the embodiment of the present application, the main body is moved to the ramming construction area, and then the main body is controlled to stop moving, and the first swinging drive component on each positioning assembly is adjusted to drive the corresponding rotating seat to swing to a vertical state; then, the first linear drive component is adjusted to drive the moving seat to move downward in a direction perpendicular to the rotation axis of the rotating seat until the drill rod is connected to the ground; when the drill rod moves downward with the moving seat to connect with the ground, the rotating drive component is turned on to drive the drill rod to rotate and screw into the ground; finally, when the drill rod is screwed into the compacted layer in the ground, the first linear drive component and the rotating drive component are closed. At this time, the ramming device is fixed by the drill rods in the several positioning assemblies, and plays a supporting and fixing role when the ramming assembly is turned on to perform ramming construction in the construction area.

[0016] Compared with the prior art, the ramming device for backfill construction in soft strata provided in the embodiment of the present application has a positioning component that can play a supporting and fixing role when the ramming device is performing ramming construction, so that the ramming device is not prone to tilting during the ramming construction on the soft backfill soil, and the density of the backfill soil is more uniform after ramming, thereby improving the quality of the ramming construction.

[0017] The technical solution adopted in the present application also provides a tamping method, based on the tamping device proposed in any of the above items, comprising the following steps: A. When the main body moves to the rammed earth construction area, the main body is controlled to stop moving, and the first swing driving member on each positioning assembly is adjusted to drive the corresponding rotating seat to swing to the vertical state; B. adjusting the first linear driving member to drive the movable seat to move downward in a direction perpendicular to the rotation axis of the rotating seat until the drill rod is in contact with the ground; C. when the drill rod moves downward with the movable seat to contact the ground, the rotation driving member is turned on to drive the drill rod to rotate and screw into the ground; D. when the drill rod is screwed into the compacted layer in the ground, closing the first linear drive member and the rotary drive member to complete the fixing of the position of the tamping device; E. opening the rammed earth assembly and tamping the rammed earth construction area to increase the density of the backfill soil in the rammed earth construction area; F. Repeat steps A to E to complete the rammed earth construction in the remaining rammed earth construction areas.

[0018] The beneficial effects of the ramming method provided in this embodiment are the same as the beneficial effects of the aforementioned ramming device, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a tamping device for backfilling soil in soft strata provided by an embodiment of the present invention Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the tamping device for backfilling soil in soft strata provided by the embodiment of the present invention Figure 2 ; Figure 3 A schematic diagram of the three-dimensional structure of a positioning assembly provided in an embodiment of the present invention; Figure 4 A schematic diagram of the front view structure of a positioning assembly provided in an embodiment of the present invention; Figure 5 A schematic diagram of the three-dimensional structure of a drill rod provided in an embodiment of the present invention; Figure 6 A schematic diagram of the explosion structure of a drill pipe provided by an embodiment of the present invention; Figure 7 For along Figure 6 Schematic diagram of the cross-sectional structure of the middle BB line; Figure 8 for Figure 1 Schematic diagram of the enlarged structure of the A area in the middle; Among them, the reference numerals in the figure are: 1. Main body; 11. Liquid storage component; 2. Positioning component; 21. Rotating seat; 211. Snap-in groove; 22. Moving seat; 221. Drain tank; 23. Drill rod; 231. Connecting sleeve; 232. Action rod section; 2321. Water outlet; 233. Spiral sheet; 3. First swing drive member; 4. First linear drive member; 5. Rotating drive member; 51. Outer gear ring; 52. Second rotating motor; 53. Driving gear; 6. Pitch adjustment structure; 61. Active screw rod; 62. Slot; 63. First rotating motor; 7. Locking structure; 71. Protruding ridge; 72. Groove; 8. Push rod; 81. Second linear drive member; 9. Ramming assembly; 91. Adjusting plate; 911. Swing arm; 912. Second swing drive member; 92. Ramming plate. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and 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 orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Please also read Figures 1 to 8 The tamping device for backfilling soil in soft strata provided by the present application is now described. The tamping device for backfilling soil in soft strata comprises a main body, a tamping assembly and a plurality of positioning assemblies.

[0026] The main body is used to travel above the backfill soil, generally using crawler or wheel drive; the ramming assembly is arranged on the main body, and is used to apply force toward the surface of the backfill soil to improve the compactness of the backfill soil inside.

[0027] A plurality of positioning components are used to connect with the backfill soil, wherein each positioning component comprises a rotating seat, a moving seat and a drill rod.

[0028] The rotating seat is rotatably connected to the outer side surface of the main body facing the horizontal direction, and the axis of the rotating shaft of the rotating seat is perpendicular to the moving direction of the main body; and the rotating seat is transmission-connected with a first swing driving component for driving it to swing to a horizontal state or a vertical state, and the swing angle range of the rotating seat is a range of ninety degrees from the horizontal state to the vertical state; the first swing driving component is a rotation driving motor, and the output end of the rotation driving motor is connected to the rotating shaft of the rotating seat to drive the rotating seat to rotate around its own rotating shaft.

[0029] The moving seat is slidably connected to the rotating seat, and is transmission-connected with a first linear driving component, so that the moving seat can move in a direction perpendicular to the rotation axis of the rotating seat; the first linear driving component can be directly connected to the moving seat using a linear cylinder or a linear oil cylinder, or a screw and a nut arranged on the moving seat can be used to form a screw driving mechanism, which is used to drive the moving seat to move toward or away from the swing end of the rotating seat; when the rotating seat is in a horizontal state, the moving direction of the moving seat is parallel to the moving direction of the main body; when the rotating seat is in a vertical state, the moving direction of the moving seat is parallel to the up and down direction.

[0030] The drill rod is rotatably connected to the moving seat, and the axial direction and the rotational axis of the drill rod are parallel to the sliding direction of the moving seat; one end of the drill rod is connected to the moving seat, and the other end has a truncated cone structure for connecting to the backfill ground.

[0031] Among them, the drill rod transmission connection is used to drive its forward rotation or reverse rotation, so that when the rotating seat is in a vertical state and the moving seat moves toward the ground, the drill rod can be screwed into the ground, and when the rotating seat is in a vertical state and the moving seat moves away from the ground, the drill rod can be screwed out of the ground; and when the rotating seat is in a horizontal state, the drill rod can be set away from the ground without affecting the movement of the main body.

[0032] In the embodiment of the present application, the main body is moved to the ramming construction area, and then the main body is controlled to stop moving, and the first swinging drive component on each positioning assembly is adjusted to drive the corresponding rotating seat to swing to a vertical state; then, the first linear drive component is adjusted to drive the moving seat to move downward in a direction perpendicular to the rotation axis of the rotating seat until the drill rod is connected to the ground; when the drill rod moves downward with the moving seat to connect with the ground, the rotating drive component is turned on to drive the drill rod to rotate and screw into the ground; finally, when the drill rod is screwed into the compacted layer in the ground, the first linear drive component and the rotating drive component are closed. At this time, the ramming device is fixed by the drill rods in the several positioning assemblies, and plays a supporting and fixing role when the ramming assembly is turned on to perform ramming construction in the construction area.

[0033] Compared with the prior art, the ramming device for backfill construction in soft strata provided in the embodiment of the present application has a positioning component that can play a supporting and fixing role when the ramming device is performing ramming construction, so that the ramming device is not prone to tilting during the ramming construction on the soft backfill soil, and the density of the backfill soil is more uniform after ramming, thereby improving the quality of the ramming construction.

[0034] In some embodiments, please refer to Figures 1 to 5 As a specific implementation of the tamping device for backfill construction in soft strata provided by the present invention, the drill rod includes a connecting sleeve and an action rod section.

[0035] The connecting sleeve is rotatably connected to the moving seat, and the axial direction and the rotating axial direction of the connecting sleeve are parallel to the sliding direction of the moving seat; a plurality of rotating bearings are arranged between the connecting sleeve and the moving seat to reduce the friction between the connecting sleeve and the moving seat and improve the stability of the drill pipe when rotating.

[0036] The action rod section is slidably inserted in the connecting sleeve, and has a distance adjustment structure between it and the connecting sleeve for limiting the relative movement of the connecting sleeve and the action rod section, and also has a locking structure for limiting the relative rotation of the connecting sleeve and the action rod section; the staff can adjust the distance that the action rod section extends from the inside of the connecting sleeve by remotely controlling the adjustment structure, so that the drill rod can be suitable for fixing backfill soil at different depths; the locking structure can ensure that when the rotating driving component drives the connecting sleeve to rotate, the action rod section and the connecting sleeve rotate synchronously.

[0037] Among them, the action rod section has a spiral spiral piece located on the outside of the connecting sleeve, so that the spiral piece can be screwed into or out of the ground when the action rod section rotates, moves toward or away from the ground; the width of the spiral piece can be adjusted according to the compaction of the backfill soil. After the action rod section is screwed into the ground, when the drill rod is subjected to a vertical upward force, the spiral piece can be adapted to connect with the backfill soil to provide a reaction force to prevent the drill rod from detaching from the backfill soil, thereby achieving the function of fixing the tamping device.

[0038] By adopting the above technical solution, the drill rod can be extended or shortened by adjusting the distance adjustment structure, thereby improving the overall applicability of the device.

[0039] In some embodiments, please refer to Figures 5 to 7 As a specific implementation of the tamping device for backfill construction in soft strata provided by the present invention, the pitch adjustment structure includes an active screw and a slot.

[0040] The active screw is coaxially arranged inside the connecting sleeve, and the active screw is transmission-connected with a first rotating motor for driving it to rotate; the first rotating motor is fixedly connected to the end of the connecting sleeve, and the output end of the first rotating motor extends into the inside of the connecting sleeve and is coaxially connected to the active screw.

[0041] A slot is provided on the inner end surface of the action rod section, and the active screw is inserted into the slot; and a driven nut threadedly connected to the active screw is fixedly connected to the opening of the slot, so that when the active screw rotates, the action rod section moves relative to the connecting sleeve.

[0042] By adopting the above technical solution, the driven nut and the active screw together form a screw-nut driving mechanism, which has the advantages of precise distance adjustment, stability and easy maintenance.

[0043] In some embodiments, please refer to Figures 5 to 7 As a specific implementation of the ramming device for backfill construction in soft strata provided by the present invention, the locking structure includes a plurality of ridges and a plurality of grooves.

[0044] A plurality of ridges are arranged on the inner wall of the connecting sleeve at intervals along the circumferential direction of the connecting sleeve, and each ridge extends along the axial direction of the connecting sleeve.

[0045] A plurality of grooves are arranged on the outer wall of the action rod section at intervals along the circumferential direction of the action rod section.

[0046] Among them, multiple grooves correspond to multiple ridges one by one, and each groove penetrates the inner end surface of the action rod section along the axial direction of the action rod section, so that when the action rod section is inserted into the connecting sleeve, each ridge is inserted into the corresponding groove to limit the relative rotation of the connecting sleeve and the action rod section.

[0047] By adopting the above technical solution, the cooperation of the multiple ridges and the multiple grooves can ensure that when the rotary driving component drives the connecting sleeve to rotate, the action rod section and the connecting sleeve can rotate synchronously.

[0048] In some embodiments, please refer to Figure 1 to Figure 2 As a specific embodiment of the ramming device for backfill construction in soft strata provided by the present invention, the main body is provided with a liquid storage component for containing liquid and discharging the liquid outward; a liquid discharge tank connected with the liquid storage component and connected with the interior of the connecting sleeve is fixedly arranged on the movable seat, and a water outlet hole connected with the interior of the connecting sleeve is provided on the action rod section; wherein the liquid storage component and the liquid discharge tank are connected by a first pipe, and the liquid discharge tank and the connecting sleeve are connected by a rotating connecting piece, and the liquid discharge tank and the rotating connecting piece are connected by a second pipe, and the rotating connecting piece can transport the liquid in the liquid discharge tank to the water outlet hole, and the rotating connecting piece can also prevent the second pipe from being entangled on the drill rod when the rotating driving member drives the connecting sleeve to rotate.

[0049] When the rotating seat is in a horizontal state, the liquid storage assembly can discharge the liquid and store it in the drainage tank; when the rotating seat is in a vertical state, the liquid in the drainage tank can flow into the connecting sleeve under the action of gravity, and be discharged through the water outlet as the action rod section rotates.

[0050] Among them, the liquid storage component includes a liquid storage tank and a first infusion pump. The liquid storage tank is arranged on the main body, and the first infusion pump is arranged on the liquid storage tank. The first infusion pump is used to discharge the liquid inside the liquid storage component into the drainage tank; the drainage tank is provided with a second infusion pump, and the second infusion pump is used to discharge the liquid inside the drainage tank into the inside of the connecting shaft sleeve, and discharge it through multiple water outlet holes at the end of the action rod section. The liquid can moisten the soil near the end of the drill rod, reduce the resistance when the drill rod is screwed into the backfill soil, and the process is smoother.

[0051] It should be noted that when the rotating drive component drives the drill rod to rotate, the liquid inside the drainage tank has a certain weight. Under the action of gravity, the gravity of the liquid inside the drainage tank provides additional downward pressure on the moving seat, which can reduce the load of the first linear drive component when the drill rod is screwed into the backfill soil.

[0052] By adopting the above technical solution, the arrangement of the liquid storage assembly and the liquid drainage tank can not only moisten the soil when the drill rod is screwed into the formation, but also provide additional downward pressure when the drill rod is screwed into the backfill soil.

[0053] In some embodiments, please refer to Figures 1 to 4 As a specific embodiment of the tamping device for backfilling in soft strata provided by the present invention, the rotation drive mechanism includes an outer gear ring and a second rotating motor.

[0054] The outer gear ring is coaxially arranged on the drill rod and is fixedly connected to the drill rod by welding.

[0055] The second rotating motor is fixedly arranged on the moving seat, and its power output axis is parallel to the moving direction of the moving seat; the power output end of the second rotating motor is connected to a driving gear meshing with the outer gear ring, so that when the second rotating motor is started, the output shaft of the second rotating motor drives the driving gear to rotate, and the driving gear then drives the outer gear ring meshing with it to rotate, thereby driving the drill rod to rotate synchronously.

[0056] By adopting the above technical solution, the transmission method of the outer ring gear and the gear has the advantages of precise transmission, high transmission ratio and easy maintenance; and, the rotation of the drill rod is driven by a side-mounted motor, which can avoid the adjustment structure of the drill rod.

[0057] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 8As a specific implementation of the tamping device for backfill construction in soft strata provided by the present invention, the positioning assembly also includes a push rod.

[0058] The push rod is slidably arranged on the main body and is transmission-connected with a second linear driving component so as to be suitable for moving toward or away from the rotating seat; the second linear driving component can be a linear air cylinder or a linear oil cylinder.

[0059] Among them, a snap-in groove is opened on the rotating seat, and a snap-in joint matching the snap-in groove is provided at the end of the push rod; when the rotating seat is in a horizontal state and / or a vertical state, the snap-in groove faces the push rod, so as to allow the push rod to be embedded and limit the rotation of the rotating seat relative to the main body.

[0060] By adopting the above technical solution, the push rod cooperates with the clamping groove, which can fix the rotating seat when the rotating seat is in a horizontal state, thereby preventing the rotating seat from shifting when the main body moves and causing damage; when the rotating seat is in a vertical state, it can fix the rotating seat, thereby preventing the rotating seat from shifting during the process of the drill rod being screwed into the backfill soil, thereby causing the screw-in direction of the drill rod to shift, affecting the positioning effect of the tamping device.

[0061] In some embodiments, please refer to Figure 1 and Figure 2 As a specific implementation of the ramming device for backfill construction in soft strata provided by the present invention, the ramming assembly includes an adjusting plate and a ramming plate.

[0062] The adjusting plate is connected to the main body in a sliding manner in the up and down directions, and is transmission-connected with a lifting drive component; the lifting drive component can adopt a screw nut driving mechanism or a linear cylinder or a linear oil cylinder; a swing arm is hinged on the adjusting plate, and the swing arm is transmission-connected with a second swing drive component, and the second swing drive component adopts a telescopic oil cylinder. When it is necessary to tamp the backfill soil on the slope protection, the second swing drive component can drive the swing arm to adjust the angle with the ground to change the angle of the tamped soil.

[0063] The rammed earth plate is slidably connected to the swing arm along the length direction of the swing arm. The rammed earth plate is provided with a reciprocating telescopic device for driving the rammed earth plate to intermittently apply force toward the surface of the backfill soil. The length direction of the swing arm is perpendicular to the moving direction of the main body, and the rammed earth plate is connected to a reciprocating drive mechanism. The reciprocating drive mechanism can adopt a screw-nut drive mechanism to drive the rammed earth plate to move back and forth along the length direction of the swing arm. Compared with the existing rammed earth plate, the rammed earth area of ​​the rammed earth plate is increased.

[0064] In some embodiments, please refer to Figure 1 and Figure 2As a specific embodiment of the tamping device for backfill construction in soft strata provided by the present invention, there are two groups of positioning components, and the two groups of positioning components are arranged side by side on both sides of the main body in the horizontal direction; and the two groups of positioning components use the same first swing driving component, and the first swing driving component can use a driving motor to synchronously drive the two groups of positioning components to swing.

[0065] The technical solution adopted in the present application also provides a tamping method, based on the tamping device proposed in any of the above items, comprising the following steps: A. When the main body moves to the rammed earth construction area, the main body is controlled to stop moving, and the first swing driving member on each positioning assembly is adjusted to drive the corresponding rotating seat to swing to a vertical state.

[0066] B. Adjust the first linear drive member to drive the movable seat to move downward in a direction perpendicular to the rotation axis of the rotating seat until the drill rod is in contact with the ground.

[0067] C. When the drill rod moves downward with the moving seat to contact the ground, the rotary drive component is turned on to drive the drill rod to rotate and screw into the ground.

[0068] D. When the drill rod is screwed into the compacted layer in the ground, the first linear drive member and the rotary drive member are closed to complete the fixation of the position of the tamping device.

[0069] E. Open the rammed earth assembly and tamp the rammed earth construction area to increase the density of the backfill soil in the rammed earth construction area.

[0070] F. Repeat steps A to E to complete the rammed earth construction in the remaining rammed earth construction areas.

[0071] The beneficial effects of the ramming method provided in this embodiment are the same as the beneficial effects of the aforementioned ramming device, and will not be repeated here.

[0072] 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 in the protection scope of the present invention.

Claims

1. A tamping device for backfill construction in soft strata, comprising a main body for traveling above the backfill, and a tamping assembly arranged on the main body for applying force toward the backfill; characterized in that: The main body is also provided with several groups of positioning components for connecting with the backfill soil, and the positioning components include: A rotating seat, rotatably connected to the outer side surface of the main body facing the horizontal direction, and transmission-connected to a first swing driving member for driving the rotating seat to swing to a horizontal state or a vertical state; a moving seat, slidably connected to the rotating seat, and drivingly connected to a first linear driving member, so that the moving seat can move in a direction perpendicular to the rotating axis of the rotating seat; when the rotating seat is in the horizontal state, the moving direction of the moving seat is parallel to the moving direction of the main body; when the rotating seat is in the vertical state, the moving direction of the moving seat is parallel to the up-down direction; and A drill rod is rotatably connected to the movable seat, and the axial direction and the rotational axial direction of the drill rod are both parallel to the sliding direction of the movable seat; The drill rod is transmission-connected with a rotation driving member for driving the drill rod to rotate forward or reversely, so that when the rotating seat is in the vertical state and the moving seat moves toward the ground, the drill rod can be screwed into the ground, and when the rotating seat is in the vertical state and the moving seat moves away from the ground, the drill rod can be screwed out of the ground; Furthermore, when the rotating seat is in the horizontal state, the drill rod is arranged away from the ground.

2. The tamping device for backfilling in soft strata as claimed in claim 1, characterized in that: The drill pipe comprises: A connecting sleeve is rotatably connected to the movable seat, and the axial direction and the rotational axial direction of the connecting sleeve are parallel to the sliding direction of the movable seat; and An action rod section is slidably inserted in the connecting sleeve, and has a distance adjustment structure between the action rod section and the connecting sleeve for limiting the relative movement of the connecting sleeve and the action rod section, and also has a locking structure for limiting the relative rotation of the connecting sleeve and the action rod section; The action rod section has a spiral sheet located outside the connecting sleeve, so that the spiral sheet can be screwed into or out of the ground when the action rod section rotates or moves toward or away from the ground.

3. The tamping device for backfilling in soft strata as claimed in claim 2, characterized in that: The distance adjustment structure comprises: A driving screw rod is coaxially arranged inside the connecting sleeve and is transmission-connected to a first rotating motor for driving the driving screw rod to rotate; and A slot is provided on the inner end surface of the action rod section, and the active screw is inserted into the slot; and a driven nut threadedly connected to the active screw is fixedly connected to the opening of the slot, so that when the active screw rotates, the action rod section moves relative to the connecting sleeve.

4. The tamping device for backfilling in soft strata as claimed in claim 2, characterized in that: The locking structure comprises: a plurality of ridges, which are arranged on the inner wall of the connecting sleeve at intervals along the circumference of the connecting sleeve, and each of the ridges extends along the axial direction of the connecting sleeve; and A plurality of grooves are arranged on the outer wall of the action rod section at intervals along the circumference of the action rod section; Among them, the multiple grooves correspond one-to-one to the multiple ridges, and each of the grooves penetrates the inner end surface of the action rod section along the axial direction of the action rod section, so that when the action rod section is inserted into the connecting sleeve, each of the ridges is inserted into the corresponding groove to limit the relative rotation of the connecting sleeve and the action rod section.

5. The tamping device for backfilling in soft strata according to any one of claims 2 to 4, characterized in that: The main body is provided with a liquid storage component for containing liquid and discharging the liquid outward; the movable seat is fixedly provided with a liquid discharge tank which is in communication with the liquid storage component and the interior of the connecting sleeve, and the action rod section is provided with a water outlet which is in communication with the interior of the connecting sleeve; When the rotating seat is in the horizontal state, the liquid storage assembly can discharge the liquid and store it in the drainage tank; when the rotating seat is in the vertical state, the liquid in the drainage tank can flow into the connecting sleeve under the action of gravity, and be discharged through the water outlet as the action rod section rotates.

6. The tamping device for backfilling in soft strata according to any one of claims 1 to 4, characterized in that: The rotation drive mechanism comprises: an outer gear ring, coaxially disposed on the drill rod and fixedly connected to the drill rod; and The second rotating motor is fixedly arranged on the moving seat, and its power output axis is parallel to the moving direction of the moving seat; the power output end of the second rotating motor is connected to a driving gear meshing with the outer gear ring, so that when the second rotating motor is started, the drill rod rotates synchronously.

7. The tamping device for backfilling in soft strata according to claim 1, characterized in that: The positioning component also includes: A push rod is slidably disposed on the main body and is transmission-connected to a second linear drive member so as to be suitable for moving toward or away from the rotating seat; Wherein, a clamping groove is provided on the rotating seat; when the rotating seat is in the horizontal state and / or the vertical state, the clamping groove faces the push rod, so as to allow the push rod to be embedded and limit the rotation of the rotating seat relative to the main body.

8. The tamping device for backfilling in soft strata according to claim 1, characterized in that: The rammed earth assembly comprises: An adjustment plate is slidably connected to the main body in an up-down direction and is transmission-connected to a lifting drive component; a swing arm is hinged on the adjustment plate, and the swing arm is transmission-connected to a second swing drive component; and The rammed earth plate is slidably connected to the swing arm along the length direction of the swing arm, and is transmission-connected to a reciprocating drive mechanism.

9. The tamping device for backfilling in soft strata as claimed in claim 1, characterized in that: The positioning components include two groups, and the two groups of positioning components are arranged side by side on both sides of the main body in a horizontal direction.

10. A tamping method, based on the tamping device according to any one of claims 1 to 9, characterized in that: The following steps are involved: A. When the main body moves to the rammed earth construction area, the main body is controlled to stop moving, and the first swing driving member on each positioning assembly is adjusted to drive the corresponding rotating seat to swing to the vertical state; B. adjusting the first linear driving member to drive the movable seat to move downward in a direction perpendicular to the rotation axis of the rotating seat until the drill rod is in contact with the ground; C. when the drill rod moves downward with the movable seat to contact the ground, the rotation driving member is turned on to drive the drill rod to rotate and screw into the ground; D. when the drill rod is screwed into the compacted layer in the ground, closing the first linear drive member and the rotary drive member to complete the fixing of the position of the tamping device; E. opening the rammed earth assembly and tamping the rammed earth construction area to increase the density of the backfill soil in the rammed earth construction area; F. Repeat steps A to E to complete the rammed earth construction in the remaining rammed earth construction areas.

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