Tamping device and tamping method for soft stratum backfill construction

Abstract

The application provides a ramming device for soft stratum backfill construction, which comprises a main body, a 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 drivingly connected with a first swing driving member for swinging; the moving seat is slidingly connected to the rotating seat and is drivingly connected with a first linear driving member; the drill rod is rotationally connected to the moving seat, and the axial direction and the rotating axial direction of the drill rod are parallel to the sliding direction of the moving seat; wherein the drill rod is drivingly connected with a rotating driving member for rotating the drill rod to rotate into or out of the ground; and when the rotating seat is in a horizontal state, the drill rod can be arranged to avoid the ground. The ramming device for soft stratum backfill construction and the ramming method provided by the application can play a positioning and supporting role during construction, so that the device is not easy to tilt, the compactness of the backfill soil after ramming is more uniform, and the construction quality is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building construction, more specifically, relates to a ramming device and method for soft ground backfill construction. BACKGROUND

[0002] Soft ground backfill construction refers to backfill engineering in soft ground, including loose sand, clay or other low bearing capacity soil. The characteristics of this backfill are that during the backfill and construction process, the soil may flow due to improper construction or soil properties, i.e. the soil loses its original structural stability and becomes like a fluid.

[0003] Soft ground usually has low bearing capacity and high compressibility, which may cause settlement or uneven deformation of the soil after construction. Currently, a ramming device is generally used to increase the density of the soil to improve the above problems. The ramming process can reduce the voids between soil particles, thereby improving the bearing capacity and stability of the soil.

[0004] The inventor found that most of the ramming devices currently used usually use wheels or tracks to move the device for easy movement, and do not have a structure to support and fix. Therefore, when ramming the soft ground backfill, the device may tilt due to ground inclination or soil flow, resulting in uneven compaction of the backfill after ramming, affecting the construction quality. SUMMARY

[0005] The present application aims to provide a ramming device and method for soft ground backfill construction to solve the technical problem that the ramming device in the prior art may tilt during use due to ground inclination or soil flow, resulting in uneven compaction of the backfill after ramming, affecting the construction quality.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a ramming device for soft ground backfill construction, comprising:

[0007] a main body for traveling on the backfill, and a ramming assembly provided on the main body for applying force to the backfill; characterized in that the main body is further provided with a plurality of positioning assemblies for contacting the backfill, the positioning assembly comprising:

[0008] a rotating seat rotatably connected to the outer side of the main body facing the horizontal direction, and a first swing driving member for driving the rotating seat to swing to a horizontal state or a vertical state;

[0009] A moving seat is slidingly connected to the rotating seat and drivingly connected with 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

[0010] A drill rod is rotatably connected to the moving seat, and the axial and rotating axial directions of the drill rod are parallel to the sliding direction of the moving seat;

[0011] The drill rod is drivingly connected with a rotating driving member for driving the drill rod to rotate forward or reversely, so that the drill rod can be rotated into the ground when the rotating seat is in the vertical state and the moving seat moves towards the ground, and the drill rod can be rotated out of the ground when the rotating seat is in the vertical state and the moving seat moves away from the ground;

[0012] When the rotating seat is in the horizontal state, the drill rod is arranged away from the ground.

[0013] Preferably, the drill rod comprises:

[0014] A connecting shaft sleeve is rotatably connected to the moving seat, and the axial and rotating axial directions of the connecting shaft sleeve are parallel to the sliding direction of the moving seat; and

[0015] An action rod section is slidingly inserted into the connecting shaft sleeve, and between the connecting shaft sleeve and the action rod section there is a pitch adjusting structure for limiting the relative movement of the connecting shaft sleeve and the action rod section, and there is also a locking structure for limiting the relative rotation of the connecting shaft sleeve and the action rod section;

[0016] The action rod section has a helical fin on the outside of the connecting shaft sleeve, which is suitable for being rotated into or out of the ground when the action rod section rotates and moves towards or away from the ground.

[0017] Preferably, the pitch adjusting structure comprises:

[0018] A driving screw is coaxially arranged inside the connecting shaft sleeve, and the driving screw is drivingly connected with a first rotating motor for driving the driving screw to rotate; and

[0019] A slot is formed in the inner end surface of the action rod section, and the driving screw is inserted into the slot; and a driven nut is fixedly connected to the opening of the slot and threadedly connected with the driving screw, so that the action rod section moves relative to the connecting shaft sleeve when the driving screw rotates.

[0020] Preferably, the locking structure comprises:

[0021] a plurality of convex ridges are arranged on the inner wall of the connecting sleeve in the circumferential direction of the connecting sleeve, and each of the convex ridges extends in the axial direction of the connecting sleeve; and

[0022] a plurality of grooves are arranged on the outer wall of the action rod link in the circumferential direction of the action rod link;

[0023] wherein the plurality of grooves correspond to the plurality of convex ridges one by one, and each of the grooves penetrates the inner end surface of the action rod link in the axial direction of the action rod link, so that when the action rod link is inserted into the connecting sleeve, each of the convex ridges is inserted into the corresponding groove to limit the relative rotation of the connecting sleeve and the action rod link.

[0024] Preferably, the main body has a liquid storage assembly for containing and discharging liquid outwardly; the movable seat is fixedly provided with a liquid discharge tank in communication with the liquid storage assembly and the interior of the connecting sleeve, and the action rod link has a water outlet hole in communication with the interior of the connecting sleeve;

[0025] When the rotating seat is in the horizontal state, the liquid storage assembly can discharge and store liquid in the liquid discharge tank; when the rotating seat is in the vertical state, the liquid in the liquid discharge tank can flow into the connecting sleeve under the action of gravity and be discharged through the water outlet hole with the rotation of the action rod link.

[0026] Preferably, the rotating drive mechanism comprises:

[0027] an outer gear ring coaxially arranged on the drill rod and fixedly connected with the drill rod; and

[0028] a second rotating motor fixedly arranged on the movable seat, and the power output shaft of the second rotating motor is parallel to the moving direction of the movable seat; the power output end of the second rotating motor is connected with a drive gear meshing with the outer gear ring, so that when the second rotating motor is started, the drill rod rotates synchronously.

[0029] Preferably, the positioning assembly further comprises:

[0030] a push rod slidingly arranged on the main body and drivingly connected with a second linear drive member to move towards or away from the rotating seat;

[0031] wherein the rotating seat is provided with a clamping groove; when the rotating seat is in the horizontal state and / or the vertical state, the clamping groove faces the push rod to be embedded by the push rod and limit the rotation of the rotating seat relative to the main body.

[0032] As preferably, the ramming earth assembly comprises:

[0033] An adjusting plate is slidingly connected to the main body in the up-down direction and is drivingly connected with a lifting driving member; a swing arm is hinged to the adjusting plate, and the swing arm is drivingly connected with a second swing driving member; and

[0034] A ramming earth plate is slidingly connected to the swing arm in the length direction of the swing arm and is drivingly connected with a reciprocating driving mechanism.

[0035] As preferably, the positioning assembly has two groups, and the two groups of the positioning assembly are arranged side by side on two sides of the main body in the horizontal direction.

[0036] In the embodiment of the present application, the main body is moved to the ramming earth construction area, then 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; then, the first linear driving member is adjusted to drive the moving seat to move downward in the direction perpendicular to the rotating axis of the rotating seat until the drill rod is in contact with the ground; when the drill rod moves downward with the moving seat to be in contact with the ground, the rotating driving member 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 stratum in the ground, the first linear driving member and the rotating driving member are turned off, at this time, the ramming earth device is fixed by the drill rods in the positioning assemblies, and plays a supporting and fixing role when the ramming earth assembly is turned on to perform the ramming earth construction on the construction area.

[0037] Compared with the prior art, the positioning assembly can play a supporting and fixing role when the ramming earth device performs the ramming earth construction, so that the ramming earth device is not easy to incline during the ramming earth construction on the soft backfill, and the compactness of the backfill is more uniform after ramming, and the ramming earth construction quality is improved.

[0038] The technical scheme adopted in the present application further provides a ramming earth method based on the ramming earth device proposed in any of the preceding embodiments, comprising the following steps:

[0039] A. When the main body moves to the ramming 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;

[0040] B. The first linear driving member is adjusted to drive the moving seat to move downward in the direction perpendicular to the rotating axis of the rotating seat until the drill rod is in contact with the ground;

[0041] C. When the drill rod moves downward with the moving seat to be in contact with the ground, the rotating driving member is turned on to drive the drill rod to rotate and screw into the ground;

[0042] D. When the drill rod is screwed into the compacted layer in the ground, the first linear drive component and the rotary drive component are turned off to fix the position of the ramming device;

[0043] E. Activate the rammed earth assembly to ram the soil in the rammed earth construction area to increase the density of the backfill soil in the rammed earth construction area.

[0044] F. Repeat steps A through E to complete the rammed earth construction of the remaining rammed earth construction areas.

[0045] The beneficial effects of the ramming method provided in this embodiment are the same as those of the aforementioned ramming device, and will not be repeated here. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 A three-dimensional structural diagram of a rammed earth device for backfilling soft soil in an embodiment of the present invention. Figure 1 ;

[0048] Figure 2 A three-dimensional structural diagram of a rammed earth device for backfilling soft soil in an embodiment of the present invention. Figure 2 ;

[0049] Figure 3 This is a three-dimensional structural diagram of the positioning component provided in an embodiment of the present invention;

[0050] Figure 4 This is a front view of the positioning component provided in an embodiment of the present invention;

[0051] Figure 5 A three-dimensional structural diagram of a drill pipe provided in an embodiment of the present invention;

[0052] Figure 6 This is an exploded structural diagram of a drill pipe provided in an embodiment of the present invention;

[0053] Figure 7 For along Figure 6 Schematic diagram of the cross-sectional structure of the middle BB line;

[0054] Figure 8 for Figure 1 Enlarged structural diagram of region A in the middle;

[0055] wherein the reference numerals in the figures refer to:

[0056] 1, main body; 11, liquid storage assembly; 2, positioning assembly; 21, rotating seat; 211, clamping groove; 22, moving seat; 221, liquid discharge tank; 23, drill rod; 231, connecting shaft sleeve; 232, action rod section; 2321, water outlet hole; 233, helical blade; 3, first swing driving member; 4, first linear driving member; 5, rotating driving member; 51, outer gear ring; 52, second rotating motor; 53, driving gear; 6, distance adjusting structure; 61, driving screw; 62, insertion slot; 63, first rotating motor; 7, locking structure; 71, convex rib; 72, groove; 8, push rod; 81, second linear driving member; 9, tamping assembly; 91, adjusting plate; 911, swing arm; 912, second swing driving member; 92, tamping plate. DETAILED DESCRIPTION

[0057] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0058] 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.

[0059] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0061] Please refer to Figures 1 to 8The application provides a ramming device for backfill soil construction in a soft stratum.

[0062] The main body is used for driving above the backfill soil, and generally adopts a caterpillar or wheel type drive; the ramming assembly is arranged on the main body and is used for applying a force to the surface of the backfill soil to improve the compactness of the inside of the backfill soil.

[0063] The plurality of positioning assemblies are all used for being connected with the backfill soil, wherein each positioning assembly comprises a rotating seat, a moving seat and a drill rod.

[0064] The rotating seat is rotationally connected to the outer side of the main body in the horizontal direction, 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 drivingly connected with a first swing driving member for driving the rotating seat to swing to a horizontal state or a vertical state, the swing angle range of the rotating seat is ninety degrees from the horizontal state to the vertical state; the first swing driving member is a rotating driving type motor, the output end of the rotating driving type motor is connected with the rotating shaft of the rotating seat to drive the rotating seat to rotate around the rotating shaft thereof.

[0065] The moving seat is slidingly connected to the rotating seat and is drivingly connected with a first linear driving member to enable the moving seat to move in a direction perpendicular to the rotating shaft of the rotating seat; the first linear driving member can be directly connected with the moving seat by using a linear cylinder or a linear oil cylinder, or can be a screw rod driving mechanism composed of a screw rod and a nut arranged on the moving seat to drive the moving seat to move towards or away from the swing end 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.

[0066] The drill rod is rotationally connected to the moving seat, and the axial direction and the rotating axial direction of the drill rod are parallel to the sliding direction of the moving seat; one end of the drill rod is connected with the moving seat, and the other end has a conical table structure for being connected with the surface of the backfill soil.

[0067] The drill rod is drivingly connected with a rotating driving member for driving the drill rod to rotate forward or reversely, so that the drill rod can be screwed into the ground when the rotating seat is in the vertical state and the moving seat moves towards the ground, and the drill rod can be screwed out of the ground when the rotating seat is in the vertical state and the moving seat moves away from the ground; and when the rotating seat is in the horizontal state, the drill rod can be arranged to avoid the ground and does not affect the movement of the main body.

[0068] In the embodiment of the application, the main body is moved to the ramming construction area, then 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; then, the first linear driving member is adjusted to drive the moving seat to move downward along the direction perpendicular to the rotating axis of the rotating seat until the drill rod is in contact with the ground; when the drill rod moves downward with the moving seat to be in contact with the ground, the rotating driving member 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 stratum in the ground, the first linear driving member and the rotating driving member are turned off, at this time, the ramming device is fixed by the drill rods in the positioning assemblies, and plays a supporting and fixing role when the ramming assembly is turned on to perform ramming construction on the construction area.

[0069] Compared with the prior art, the ramming device for soft stratum backfill construction provided in the embodiment of the application can play a supporting and fixing role when the ramming device performs ramming construction, so that the ramming device is less likely to tilt during the ramming construction on the soft backfill, and the compactness of the backfill after ramming is more uniform, and the ramming construction quality is improved.

[0070] In some embodiments, please refer to Figures 1 to 5 As a specific embodiment of the ramming device for soft stratum backfill construction provided in the application, the drill rod comprises a connecting shaft sleeve and an action rod section.

[0071] The connecting shaft sleeve is rotationally connected to the moving seat, and the axial direction and the rotating axial direction of the connecting shaft sleeve are both parallel to the sliding direction of the moving seat; a plurality of rotating bearings are arranged between the connecting shaft sleeve and the moving seat to reduce the friction between the connecting shaft sleeve and the moving seat and improve the stability of the drill rod during rotation.

[0072] The action rod section is slidingly inserted into the connecting shaft sleeve, and the action rod section and the connecting shaft sleeve have a distance adjusting structure for limiting the relative movement of the connecting shaft sleeve and the action rod section, and also have a locking structure for limiting the relative rotation of the connecting shaft sleeve and the action rod section; the staff can adjust the distance of the action rod section extending out of the connecting shaft sleeve by remotely controlling the adjusting structure, so that the drill rod can be suitable for fixing backfill of different depths; the locking structure can ensure that the action rod section rotates synchronously with the connecting shaft sleeve when the rotating driving member drives the connecting shaft sleeve to rotate.

[0073] The action rod section has a spiral fin outside the connecting shaft sleeve, which is helical, so that the spiral fin can screw into or out of the ground when the action rod section rotates and moves towards or away from the ground; the width of the spiral fin can be adjusted according to the compactness of the backfill, and when the action rod section screws into the ground, the spiral fin can be adapted to be in contact with the backfill to provide a reaction force to prevent the drill rod from detaching from the backfill, thereby achieving the function of fixing the ramming device.

[0074] By adopting the technical scheme, the extension or shortening of the drill rod can be realized by adjusting the distance adjusting structure, and the applicability of the device as a whole is improved.

[0075] In some embodiments, referring to Figures 5 to 7 , as a specific embodiment of the ramming device for soft stratum backfill construction provided by the present application, the distance adjusting structure comprises a driving screw and a slot.

[0076] The driving screw is coaxially arranged in the inside of the connecting shaft sleeve, and the driving screw is drivingly connected with a first rotating motor for driving the rotation of the driving screw; the first rotating motor is fixedly connected with the end of the connecting shaft sleeve, and the output end of the first rotating motor extends into the inside of the connecting shaft sleeve and is coaxially connected with the driving screw.

[0077] The slot is arranged on the inner end face of the action rod segment, and the driving screw is inserted into the slot; and the opening of the slot is fixedly connected with a driven nut which is threadedly connected with the driving screw, so that the action rod segment moves relative to the connecting shaft sleeve when the driving screw rotates.

[0078] By adopting the technical scheme, the driven nut and the driving screw together form a screw nut driving mechanism, which has the advantages of accurate distance adjustment, stability and easy maintenance.

[0079] In some embodiments, referring to Figures 5 to 7 , as a specific embodiment of the ramming device for soft stratum backfill construction provided by the present application, the locking structure comprises a plurality of convex ribs and a plurality of grooves.

[0080] The plurality of convex ribs are arranged on the inner wall of the connecting shaft sleeve in a circumferential direction, and each convex rib extends in an axial direction of the connecting shaft sleeve.

[0081] The plurality of grooves are arranged on the outer wall of the action rod segment in a circumferential direction.

[0082] Among them, the plurality of grooves and the plurality of convex ribs one-to-one correspond, and each groove penetrates the inner end face of the action rod segment in the axial direction of the action rod segment, so that when the action rod segment is inserted into the connecting shaft sleeve, each convex rib is inserted into the corresponding groove, so as to limit the relative rotation of the connecting shaft sleeve and the action rod segment.

[0083] By adopting the technical scheme, the cooperation of the plurality of convex ribs and the plurality of grooves can ensure that the action rod segment and the connecting shaft sleeve can be synchronously rotated when the rotating driving member drives the connecting shaft sleeve to rotate.

[0084] In some embodiments, referring to Figures 1 to 2As a specific embodiment of the ramming device for backfill soil construction in soft stratum provided by the present application, the main body is provided with a liquid storage assembly for containing and discharging liquid outward; the moving seat is fixedly provided with a liquid discharge tank in communication with the liquid storage assembly and the inside of the connecting shaft sleeve, and the action rod section is provided with a water outlet hole in communication with the inside of the connecting shaft sleeve; wherein the liquid storage assembly and the liquid discharge tank are connected by a first pipeline, the liquid discharge tank and the connecting shaft sleeve are connected by a rotating connecting piece, and the liquid discharge tank and the rotating connecting piece are connected by a second pipeline; the rotating connecting piece can deliver the liquid in the liquid discharge tank to the water outlet hole, and can prevent the second pipeline from winding around the drill rod when the connecting shaft sleeve is rotated by the rotating drive member.

[0085] When the rotating seat is in a horizontal state, the liquid storage assembly can discharge and store the liquid in the liquid discharge tank; when the rotating seat is in a vertical state, the liquid in the liquid discharge tank can flow into the connecting shaft sleeve under the action of gravity and be discharged through the water outlet hole with the rotation of the action rod section.

[0086] The liquid storage assembly includes a liquid storage tank and a first liquid delivery pump, the liquid storage tank is arranged on the main body, and the first liquid delivery pump is arranged on the liquid storage tank and used to discharge the liquid in the liquid storage assembly into the liquid discharge tank; the liquid discharge tank is provided with a second liquid delivery pump, the second liquid delivery pump is used to discharge the liquid in the liquid discharge tank into the connecting shaft sleeve and discharge the liquid through the plurality of water outlet holes at the end of the action rod section, and the liquid can wet the soil near the end of the drill rod, thereby reducing the resistance when the drill rod is rotated into the backfill soil and making the process more smooth.

[0087] It should be noted that when the rotating drive member drives the drill rod to rotate, the liquid in the liquid discharge tank has a certain weight, and under the action of the earth's gravity, the gravity of the liquid in the liquid discharge tank provides additional downward pressure for the moving seat, thereby reducing the load of the first linear drive member when the drill rod is rotated into the backfill soil.

[0088] By adopting the above technical scheme, the arrangement of the liquid storage assembly and the liquid discharge tank can not only wet the soil when the drill rod is rotated into the stratum, but also provide additional downward pressure when the drill rod is rotated into the backfill soil.

[0089] In some embodiments, please refer to Figures 1 to 4 As a specific embodiment of the ramming device for backfill soil construction in soft stratum provided by the present application, the rotating drive mechanism includes an outer gear ring and a second rotating motor.

[0090] The outer gear ring is coaxially arranged on the drill rod and fixedly connected with the drill rod by welding.

[0091] The second rotating motor is fixedly arranged on the moving base, and a power output shaft thereof is parallel to the moving direction of the moving base; the power output end of the second rotating motor is connected with 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, the driving gear further drives the outer gear ring meshing and connected therewith to rotate, and further drives the drill rod to rotate synchronously.

[0092] By adopting the above technical scheme, the transmission mode of the outer gear ring and the gear has the advantages of accurate transmission, high transmission ratio and easy maintenance; and the rotation of the drill rod is driven in the form of the side-by-side motor, which can avoid the adjusting structure of the drill rod.

[0093] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 8 , as a specific embodiment of the ramming device for soft stratum backfill construction provided by the present application, the positioning assembly further comprises a push rod.

[0094] The push rod is slidingly arranged on the main body and is connected with a second linear driving member in a transmission mode, so as to be suitable for moving towards or away from the rotating base; the second linear driving member can be a linear cylinder or a linear oil cylinder.

[0095] The rotating base is provided with a clamping groove, and the end of the push rod is provided with a clamping head matched with the clamping groove; when the rotating base is in a horizontal state and / or a vertical state, the clamping groove faces the push rod, so as to be suitable for embedding the push rod and limiting the rotation of the rotating base relative to the main body.

[0096] By adopting the above technical scheme, the push rod and the clamping groove are matched, which can fix the rotating base when the rotating base is in a horizontal state, so as to avoid the deviation of the rotating base when the main body moves, thereby causing damage; when the rotating base is in a vertical state, the rotating base is fixed, so as to avoid the deviation of the rotating base during the process of rotating the drill rod into the backfill soil, thereby causing the deviation of the rotating direction of the drill rod and affecting the positioning effect of the ramming device.

[0097] In some embodiments, please refer to Figure 1 and Figure 2 , as a specific embodiment of the ramming device for soft stratum backfill construction provided by the present application, the ramming assembly comprises an adjusting plate and a ramming plate.

[0098] The adjusting plate is slidably connected to the main body in the up-down direction and is drivingly connected to a lifting driving member; the lifting driving member can be a screw-nut driving mechanism or a linear cylinder or a linear oil cylinder; the adjusting plate is hingedly connected to a swing arm, and the swing arm is drivingly connected to a second swing driving member, which is a telescopic oil cylinder; when backfill soil on the slope needs to be rammed, the second swing driving member can drive the swing arm to adjust the angle between the swing arm and the ground to change the angle of ramming.

[0099] The ramming plate is slidably connected to the swing arm in the length direction of the swing arm, and the ramming plate has a reciprocating telescopic device for driving the ramming plate to intermittently apply a force to the surface of the backfill soil; wherein the length direction of the swing arm is perpendicular to the advancing direction of the main body, and the ramming plate is drivingly connected to a reciprocating driving mechanism, which can be a screw-nut driving mechanism, for driving the ramming plate to reciprocate in the length direction of the swing arm; compared with the existing ramming plate, the ramming area of the ramming plate is increased.

[0100] In some embodiments, please refer to Figure 1 and Figure 2 as a specific embodiment of the soft ground backfill soil construction ramming device provided by the present application, the positioning assembly has two groups, and the two groups of positioning assemblies are arranged side by side on the two sides of the main body in the horizontal direction; and the two groups of positioning assemblies are driven by the same first swing driving member, which can be a driving motor for synchronously driving the two groups of positioning assemblies to swing.

[0101] The technical scheme adopted in the present application further provides a ramming method based on any of the foregoing ramming devices, comprising the following steps:

[0102] A. When the main body moves to the ramming 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.

[0103] B. Adjust the first linear driving member to drive the moving seat to move downward in a direction perpendicular to the rotating axis of the rotating seat until the drill rod is in contact with the ground.

[0104] C. When the drill rod moves downward with the moving seat to be in contact with the ground, the rotating driving member is turned on to drive the drill rod to rotate and screw into the ground.

[0105] D. When the drill rod is screwed into the compacted layer in the ground, the first linear driving member and the rotating driving member are turned off to complete the fixation of the position of the ramming device.

[0106] E. Turn on the ramming assembly to ram the ramming construction area to increase the compactness of the backfill soil in the ramming construction area.

[0107] F. Repeat steps A to E to complete ramming of the remaining ramming construction area.

[0108] The ramming method provided by the embodiment has the same beneficial effects as the ramming device described above, and will not be described here again.

[0109] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ramming device for backfilling in soft soil strata, comprising a main body for traveling over the backfill, and ramming components mounted on the main body for applying force toward the backfill; characterized in that, The main body is also provided with several sets of positioning components for contacting the backfill soil, the positioning components including: The rotating seat is rotatably connected to the outer side of the main body facing the horizontal direction, and is driven by a first swing drive member for swinging it to a horizontal or vertical state. A movable seat is slidably connected to the rotating seat and is driven by a first linear drive member, enabling the movable seat to move in a direction perpendicular to the rotation axis of the rotating seat; when the rotating seat is in the horizontal state, the moving direction of the movable 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 movable seat is parallel to the up-down direction; and The drill rod is rotatably connected to the movable seat, and both the axial direction and the rotational direction of the drill rod are parallel to the sliding direction of the movable seat. The drill rod is connected to a rotary drive component for driving it to rotate forward or backward, so that the drill rod can be screwed into the ground when the rotating seat is in the vertical state and the moving seat moves toward the ground, and the drill rod can be screwed out of the ground when the rotating seat is in the vertical state and the moving seat moves away from the ground. Furthermore, when the rotating seat is in the horizontal state, the drill rod is positioned to avoid the ground. The drill pipe includes: A connecting bushing is rotatably connected to the movable seat, and both the axial direction and the rotational direction of the connecting bushing are parallel to the sliding direction of the movable seat; and The actuating rod section is slidably inserted into the connecting bushing, and has an adjusting structure between it and the connecting bushing for limiting the relative movement of the connecting bushing and the actuating rod section, and also has a locking structure for limiting the relative rotation of the connecting bushing and the actuating rod section; The actuating rod section has a spiral blade located outside the connecting bushing, which is adapted to allow the spiral blade to screw into or out of the ground when the actuating rod section rotates or moves toward or away from the ground. The main body has a liquid storage component for containing liquid and discharging liquid outward; the movable seat is fixedly provided with a drain tank that communicates with the liquid storage component and also communicates with the inside of the connecting bushing, and the actuating rod section has a water outlet that communicates with the inside of the connecting bushing. When the rotating seat is in the horizontal state, the liquid storage assembly can discharge liquid and store it in the drain tank; when the rotating seat is in the vertical state, the liquid in the drain tank can flow into the connecting bushing under the action of gravity, and be discharged through the outlet hole as the actuating rod rotates.

2. The ramming device for backfilling soil in soft strata as described in claim 1, characterized in that, The adjustment structure includes: The drive screw is coaxially disposed inside the connecting bushing and is driven by a first rotary motor for rotating it; and A slot is formed on the inner end face of the actuating rod section, and the driving screw is inserted into the slot; and a driven nut that is threadedly connected to the driving screw is fixedly connected to the opening of the slot, so that the actuating rod section moves relative to the connecting bushing when the driving screw rotates.

3. The ramming device for backfilling soil in soft strata as described in claim 1, characterized in that, The locking structure includes: Multiple protruding ridges are spaced circumferentially on the inner wall of the connecting sleeve, and each protruding ridge extends axially along the connecting sleeve; and Multiple grooves are spaced apart along the circumference of the actuating rod section on the outer wall of the actuating rod section; The plurality of grooves correspond one-to-one with the plurality of protrusions, and each groove penetrates the inner end face of the actuating rod section along the axial direction of the actuating rod section, so that when the actuating rod section is inserted into the connecting bushing, each protrusion is inserted into the corresponding groove, thereby restricting the relative rotation of the connecting bushing and the actuating rod section.

4. The ramming device for backfilling soil in soft strata as described in claim 1, characterized in that, The rotation drive component includes: An external gear ring is coaxially mounted on the drill rod and fixedly connected to the drill rod; and The second rotary motor is fixedly mounted on the movable base, and its power output axis is parallel to the moving direction of the movable base; the power output end of the second rotary motor is connected to a drive gear that meshes with the external gear ring, so that the drill rod rotates synchronously when the second rotary motor starts.

5. The ramming device for backfilling soil in soft strata as described in claim 1, characterized in that, The positioning component also includes: The push rod is slidably mounted on the main body and is connected to a second linear drive member to be adapted to move toward or away from the rotating seat; The rotating seat has a snap-fit ​​groove; when the rotating seat is in the horizontal and / or vertical state, the snap-fit ​​groove faces the push rod, so as to allow the push rod to be inserted and restrict the rotation of the rotating seat relative to the main body.

6. The ramming device for backfilling soil in soft strata as described in claim 1, characterized in that, The rammed earth assembly includes: An adjusting plate is slidably connected to the main body in the vertical direction and is driven by a lifting drive component; a swing arm is hinged to the adjusting plate, and the swing arm is driven by a second swing drive component; and The rammed earth plate is slidably connected to the swing arm along the length of the swing arm and is connected to a reciprocating drive mechanism.

7. The ramming device for backfilling soil in soft strata as described in claim 1, characterized in that, The positioning components are in two sets, and the two sets of positioning components are arranged side by side on both sides of the main body facing the horizontal direction.

8. A method for ramming soil, based on the ramming soil apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: A. When the main body moves to the rammed earth construction area, control the main body to stop moving, and adjust the first swing drive component on each of the positioning components to drive the corresponding rotating seat to swing to the vertical state; B. Adjust the first linear drive component to drive the movable seat to move downward in a direction perpendicular to the rotation axis of the rotating seat until the drill rod contacts the ground; C. When the drill rod moves downward with the movable seat to contact the ground, the rotation drive component is activated to drive the drill rod to rotate and screw it into the ground; D. When the drill rod is screwed into the compacted layer in the ground, the first linear drive component and the rotary drive component are turned off to fix the position of the ramming device; E. Activate the rammed earth assembly to ram the soil in the rammed earth construction area to increase the density of the backfill soil in the rammed earth construction area. F. Repeat steps A through E to complete the rammed earth construction of the remaining rammed earth construction areas.

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