A rammed earth device for foundation construction

Abstract

The present invention relates to the technical field of engineering construction, and specifically relates to a rammed earth device for foundation construction. The rammed earth device for foundation construction includes a machine base, a rammer frame, an eccentric hammer, and an adjustment mechanism. The rammer frame has a rammed earth end and a connection end, and the connection end is hinged to the machine base. A first rotating shaft is provided at the rammed earth end. Taking any point on the axis of the first rotating shaft as the origin, a vertical plane rectangular coordinate system is established. The vertical plane rectangular coordinate system has a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant. The eccentric hammer includes a mounting disc and a counterweight block. The mounting disc is sleeved on the first rotating shaft and can rotate synchronously with the first rotating shaft. The mounting disc can slide along the radial direction of the first rotating shaft; the counterweight block is fixedly arranged on the mounting disc; the adjustment mechanism is configured to, when the counterweight block is located in the third quadrant, be able to inversely adjust the distance between the counterweight block and the first rotating shaft according to the soil hardness of the foundation to be rammed, so as to increase the impact force of the rammer frame on the ground, thereby being able to adapt to foundations of different soil types.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and particularly to a rammed earth device for foundation construction. Background Art

[0002] An underground garage is a building facility that utilizes underground space for vehicle parking; when constructing an underground garage, it is necessary to ram the foundation. Due to the narrow underground space and limited height, large rammed earth equipment cannot enter the underground space, so a frog rammer is mostly used for ramming.

[0003] A frog rammer is a compaction machine that rams backfill soil in layers by using impact and impact vibration, and is widely used in construction projects such as buildings, roads, and water conservancy. Its working principle is that an electric motor drives an eccentric block to rotate, generating a centrifugal force, causing the rammer frame to swing up and down under the action of the eccentric block, thereby ramming the soil.

[0004] In related technologies, for example, Chinese Patent CN220099577U discloses a roadbed ramming device. This roadbed ramming device drives the first rotating rod and the second rotating rod to rotate simultaneously through a driving mechanism, drives the eccentric wheel to swing, and thereby drives the hammer plate to hammer the ground and move forward at the same time to perform rammed earth operations; when the knocking area of the hammer plate cannot meet the requirements, the user can install an extension plate on the surface of the hammer plate to increase the knocking area.

[0005] Although the above-mentioned roadbed ramming device can increase the area of the foundation rammed in a single time to a certain extent, it is found in the actual rammed earth process that when ramming foundations of different soil types, since different soil types require different ramming energies, it is necessary to replace configuration blocks of different weights or replace different ramming machines, which is not only troublesome to operate, but also has a poor ramming effect, affecting the rammed earth efficiency. Summary of the Invention

[0006] Based on this, it is necessary to provide a rammed earth device for foundation construction in view of the problems of poor ramming effect and troublesome operation existing in the current foundation construction process.

[0007] The above object is achieved by the following technical solutions:

[0008] A rammed earth device for foundation construction, the rammed earth device for foundation construction includes:

[0009] A machine base;

[0010] A rammer frame, the rammer frame has a rammed earth end and a connection end, and the connection end is hinged to the machine base; the rammed earth end is suspended and is used for ramming the earth. A first rotating shaft is horizontally arranged on the rammed earth end, and the first rotating shaft can rotate self - sufficiently.

[0011] Establish a vertical plane rectangular coordinate system with any point on the axis of the first rotating shaft as the origin. The vertical plane rectangular coordinate system has a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant.

[0012] An eccentric weight, which includes a mounting disc and a counterweight. The mounting disc is sleeved on the first rotating shaft and can rotate synchronously with the first rotating shaft. The mounting disc can slide along the radial direction of the first rotating shaft; the counterweight is fixedly arranged on the mounting disc.

[0013] An adjusting mechanism configured to inversely adjust the distance between the counterweight and the first rotating shaft according to the soil hardness of the foundation to be tamped when the counterweight is in the third quadrant.

[0014] Further, the adjusting mechanism is also configured to keep the distance between the counterweight and the first rotating shaft when the counterweight is in the fourth quadrant the same as that when the counterweight is in the third quadrant.

[0015] Further, the adjusting mechanism is also configured to directly adjust the distance between the counterweight and the first rotating shaft according to the soil hardness of the foundation to be tamped when the counterweight is in the first quadrant.

[0016] Further, the adjusting mechanism is also configured to keep the distance between the counterweight and the first rotating shaft when the counterweight is in the second quadrant the same as that when the counterweight is in the first quadrant.

[0017] Further, the adjusting mechanism includes a mounting hole and two driving cylinders. The mounting hole is arranged on the mounting disc and extends along the radial direction of the mounting disc. The extending direction of the mounting hole passes through the counterweight; the two driving cylinders are symmetrically inserted into the mounting hole, and the ends of the output shafts of the two driving cylinders jointly clamp the first rotating shaft.

[0018] Further, the output power of the driving cylinder is provided by hydraulic pressure.

[0019] Further, the number of the eccentric weights is two and they are symmetrically arranged.

[0020] Further, a second rotating shaft is horizontally arranged on the machine base; the connecting end is rotatably sleeved on the second rotating shaft; the foundation construction rammer also includes a driving component and a transmission component. The driving component is configured to drive the second rotating shaft to rotate self - rotatably; the transmission component is configured to transmit the rotation of the second rotating shaft to the first rotating shaft.

[0021] Further, the driving assembly includes a driving motor, a first transmission wheel, a second transmission wheel, and a first transmission member. The driving motor is disposed on the machine base; the first transmission wheel is fixedly sleeved on the motor shaft of the driving motor; the second transmission wheel is fixedly sleeved on the second rotating shaft; and the first transmission member is drivingly connected between the first transmission wheel and the second transmission wheel.

[0022] Further, the transmission assembly includes a third transmission wheel, a fourth transmission wheel, and a second transmission member. The third transmission wheel is fixedly sleeved on the second rotating shaft; the fourth transmission wheel is fixedly sleeved on the first rotating shaft; and the second transmission member is drivingly connected between the third transmission wheel and the fourth transmission wheel.

[0023] The beneficial effects of the present invention are as follows:

[0024] When the rammed earth device for foundation construction provided by the present invention is in use, first, the first rotating shaft is driven to rotate self - rotatably, and the first rotating shaft synchronously drives the eccentric hammer to rotate; during the rotation of the eccentric hammer, when the counterweight is in the first and second quadrants, under the action of centrifugal force, the eccentric hammer drives the rammer frame to rise. When the counterweight is in the third quadrant, under the action of centrifugal force and its own weight, the rammer frame accelerates to descend. At the same time, the adjusting mechanism inversely adjusts the distance between the counterweight and the first rotating shaft according to the soil hardness of the foundation to be rammed, so as to increase the impact force of the rammer frame on the ground, thereby being able to adapt to foundations of different soil types and improve the ramming effect.

[0025] Further, by setting the adjusting mechanism, it is also configured that when the counterweight is in the fourth quadrant, the distance between the counterweight and the first rotating shaft when the counterweight is in the third quadrant is maintained, so that during use, by reducing the centrifugal force of the counterweight, the resistance received when the rammed earth device for foundation construction moves forward is reduced.

[0026] Further, by setting the adjusting mechanism, it is also configured that when the counterweight is in the first quadrant, the distance between the counterweight and the first rotating shaft is directly adjusted according to the soil hardness of the foundation to be rammed, so that during use, by increasing the centrifugal force of the counterweight, the height that the counterweight can drive the rammer frame to rise is increased, and further the ramming effect of the rammer frame on the ground is improved.

[0027] Further, by setting the adjusting mechanism, it is also configured that when the counterweight is in the second quadrant, the distance between the counterweight and the first rotating shaft when the counterweight is in the first quadrant is maintained, so that during use, by increasing the centrifugal force of the counterweight, the height that the counterweight can drive the rammer frame to rise is further increased, and further the ramming effect of the rammer frame on the ground is improved.

[0028] Further, by setting the number of eccentric weights to two and arranging them symmetrically, when in use, on the one hand, the force on the rammer frame during lifting is balanced, reducing wear, and on the other hand, the impact force on the ground when the rammer frame hits the ground is relatively uniform, ensuring the compactness of the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. 6 is a schematic perspective view of a soil ramming device for foundation construction according to an embodiment of the present invention;

[0030] Figure 2 FIG. 7 is a schematic front view of a soil ramming device for foundation construction according to an embodiment of the present invention;

[0031] Figure 3 FIG. 8 is a schematic side view of a soil ramming device for foundation construction according to an embodiment of the present invention;

[0032] Figure 4 is Figure 3 the sectional view taken along line A-A in FIG. 6;

[0033] Figure 5 is Figure 4 the enlarged partial structural view at position B in FIG. 6.

[0034] Wherein:

[0035] 1, machine base; 11, second rotating shaft; 12, bracket; 13, handle; 14, fixed bearing seat;

[0036] 2, rammer frame; 201, ramming end; 202, connecting end; 21, first rotating shaft;

[0037] 3, eccentric weight; 31, mounting disc; 32, counterweight;

[0038] 4, adjusting mechanism; 41, mounting hole; 42, driving cylinder; 43, clamping piece; 44, key;

[0039] 5, driving assembly; 51, driving motor; 52, first driving wheel; 53, second driving wheel; 54, first driving belt;

[0040] 6, transmission assembly; 61, third driving wheel; 62, fourth driving wheel; 63, second driving belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The serial numbers assigned to components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connected" and "coupled" as used herein, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] As Figures 1 to 5 As shown, a rammed earth device for foundation construction provided by an embodiment of the present invention is used to ram the foundation, and is configured to include a machine base 1, a rammer frame 2, an eccentric hammer 3 and an adjustment mechanism 4. The rammer frame 2 has a rammed earth end 201 and a connection end 202, and the connection end 202 is hinged to the machine base 1; the rammed earth end 201 is suspended and is used for ramming the earth. A first rotating shaft 21 is horizontally arranged on the rammed earth end 201, and the first rotating shaft 21 can rotate self - sufficiently; taking any point on the axis of the first rotating shaft 21 as the origin, a vertical plane rectangular coordinate system is established, and the vertical plane rectangular coordinate system has a first quadrant, a second quadrant, a third quadrant and a fourth quadrant; the eccentric hammer 3 includes a mounting disc 31 and a counterweight 32. The mounting disc 31 is sleeved on the first rotating shaft 21 and can rotate synchronously with the first rotating shaft 21, and the mounting disc 31 can slide along the radial direction of the first rotating shaft 21; the counterweight 32 is fixedly arranged on the mounting disc 31; the adjustment mechanism 4 is configured such that when the counterweight 32 is located in the third quadrant, it can inversely adjust the distance between the counterweight 32 and the first rotating shaft 21 according to the soil hardness of the foundation to be rammed.

[0045] Specifically in this embodiment, as Figure 1As shown, the base 1 is configured as a flat plate structure, and its plate surface is arranged in the horizontal direction when in use; the rammed earth end 201 is configured as a "匚"-shaped strip structure, and the opening is arranged upward, the connecting end 202 is configured as a triangular plate structure, and the connecting end 202 is configured to be fixedly connected to the rammed earth end 201 at the left end during installation, and is located between the two suspended ends of the rammed earth end 201, and the right end is hinged to the base 1; in order to facilitate the installation of the first rotating shaft 21, as shown Figure 3 As shown, fixed bearing seats 14 are provided at both tops of the rammed earth end 201, and the first rotating shaft 21 is arranged to be inserted into the fixed bearing seats 14 during installation; Figure 2 As shown, the shape of the counterweight block 32 is set to be a fan ring, and when installed, it is set to be coaxially sleeved on the mounting plate 31. The upper right area of the plane rectangular coordinate system established with any point on the axis of the first rotating shaft 21 as the origin is the first quadrant, the upper left area is the second quadrant, the lower left area is the third quadrant, and the lower right area is the fourth quadrant.

[0046] Initially, the mounting plate 31 and the first rotating shaft 21 are coaxially arranged, at this time, the distance between the counterweight block 32 and the first rotating shaft 21 is r, and the tamping energy of the tamping frame 2 hitting the ground is limited; when the counterweight block 32 is located in the third quadrant and the hardness of the soil of the foundation to be compacted increases, the adjusting mechanism 4 is configured to reduce the distance between the counterweight block 32 and the first rotating shaft 21, at this time the distance between the counterweight block 32 and the first rotating shaft 21 is d1, d1<r; when the counterweight block 32 is located in the third quadrant and the hardness of the soil of the foundation to be compacted decreases, the adjusting mechanism 4 is configured to increase the distance between the counterweight block 32 and the first rotating shaft 21, at this time the distance between the counterweight block 32 and the first rotating shaft 21 is D1, D1<r.

[0047] When in use, the first rotating shaft 21 is first driven to rotate, and the first rotating shaft 21 synchronously drives the eccentric hammer 3 to rotate; during the rotation of the eccentric hammer 3, when the counterweight block 32 is in the first and second quadrants, the eccentric hammer 3 drives the tamping frame 2 to rise under the action of centrifugal force, and when the counterweight block 32 is in the third quadrant, the tamping frame 2 is accelerated to descend under the action of centrifugal force and its own weight. At the same time, the distance between the counterweight block 32 and the first rotating shaft 21 is inversely adjusted by the adjusting mechanism 4 according to the hardness of the soil to be compacted, so as to increase the impact force of the tamping frame 2 on the ground, so as to adapt to foundations of different soil types and improve the compaction effect.

[0048] Preferably, the adjustment mechanism 4 is configured to adjust the distance between the counterweight block 32 and the first rotating shaft 21 only when the counterweight block 32 is within the 45° range or a smaller angle range in the lower half of the third quadrant, so as to ensure both the acceleration effect of the counterweight block 32 on the ramming frame 2 and the increase of the ramming force of the ramming frame 2.

[0049] In some embodiments, the adjusting mechanism 4 is further configured to maintain the distance between the counterweight 32 and the first rotating shaft 21 when the counterweight 32 is in the fourth quadrant as that when the counterweight 32 is in the third quadrant.

[0050] Specifically in this embodiment, when the counterweight 32 is in the fourth quadrant, the distance between the counterweight 32 and the first rotating shaft 21 is d1 or D1, such that the centrifugal force acting on the counterweight 32 is relatively small, and thus the horizontal component force of the centrifugal force acting to the right is relatively small, thereby enabling the resistance encountered by the ground construction rammer device when moving leftward to be reduced.

[0051] In a further embodiment, the adjusting mechanism 4 is further configured to proportionally adjust the distance between the counterweight 32 and the first rotating shaft 21 according to the soil hardness of the ground to be rammed when the counterweight 32 is in the first quadrant.

[0052] Specifically in this embodiment, when the counterweight 32 is in the first quadrant and the soil hardness of the ground to be rammed increases, the adjusting mechanism 4 is configured to be able to increase the distance between the counterweight 32 and the first rotating shaft 21. At this time, the distance between the counterweight 32 and the first rotating shaft 21 is d2, where d2 > r; when the counterweight 32 is in the first quadrant and the soil hardness of the ground to be rammed decreases, the adjusting mechanism 4 is configured to be able to decrease the distance between the counterweight 32 and the first rotating shaft 21. At this time, the distance between the counterweight 32 and the first rotating shaft 21 is D2, where D2 > r.

[0053] During use, when the counterweight 32 is in the first quadrant, the distance between the counterweight 32 and the first rotating shaft 21 is d2 or D2, such that the centrifugal force acting on the counterweight 32 is relatively large, enabling the counterweight 32 to drive the ram frame 2 to rise to a greater height, and thus enabling the ramming energy of the ram frame 2 when ramming the ground to be increased, which is conducive to improving the ramming effect.

[0054] In a further embodiment, the adjusting mechanism 4 is further configured to maintain the distance between the counterweight 32 and the first rotating shaft 21 when the counterweight 32 is in the second quadrant as that when the counterweight 32 is in the first quadrant.

[0055] Specifically in this embodiment, when the counterweight 32 is in the second quadrant, the distance between the counterweight 32 and the first rotating shaft 21 is d2 or D2, such that the centrifugal force acting on the counterweight 32 is relatively large, enabling the counterweight 32 to further drive the ram frame 2 to rise to a greater height, and thus enabling the ramming energy of the ram frame 2 when ramming the ground to be further increased, which is conducive to further improving the ramming effect.

[0056] In some other embodiments, the adjusting mechanism 4 is arranged to include a mounting hole 41 and two driving cylinders 42. The mounting hole 41 is arranged on the mounting disc 31 and extends along the radial direction of the mounting disc 31. The extending direction of the mounting hole 41 passes through the counterweight 32. The two driving cylinders 42 are symmetrically inserted into the mounting hole 41, and the ends of the output shafts of the two driving cylinders 42 jointly clamp the first rotating shaft 21.

[0057] Specifically, in this embodiment, as Figure 4 and Figure 5 shown, the axes of the mounting hole 41 and the mounting disc 31 coincide. The driving cylinder 42 is arranged such that its fixed end is at the end of the mounting hole 41, and the output end points to the axis of the mounting disc 31. An arc-shaped clamping piece 43 is fixedly sleeved at the end of each driving cylinder 42. When installed, the clamping piece 43 is sleeved on the first rotating shaft 21 and connected to the first rotating shaft 21 through a key 44, so that the mounting disc 31 can rotate following the first rotating shaft 21.

[0058] It can be understood that the driving cylinder 42 can be any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder. When the driving cylinder 42 is a hydraulic cylinder, its output power is provided by hydraulic pressure.

[0059] During the use process, when the counterweight 32 is in the first quadrant, the two driving cylinders 42 are respectively located in the first quadrant and the third quadrant. The output shaft of the driving cylinder 42 located in the first quadrant extends, and the output shaft of the driving cylinder 42 located in the third quadrant retracts, so that the counterweight 32 moves away from the first rotating shaft 21, thereby increasing the centrifugal force received by the counterweight 32. When the counterweight 32 is in the third quadrant, the two driving cylinders 42 are respectively located in the first quadrant and the third quadrant. The output shaft of the driving cylinder 42 located in the first quadrant extends, and the output shaft of the driving cylinder 42 located in the third quadrant retracts, so that the counterweight 32 moves towards the first rotating shaft 21. At this time, the pushing force of the output shaft of the driving cylinder 42 increases the force on the first rotating shaft 21, and further increases the force on the rammer frame 2, thereby increasing the impact force of the rammer frame 2 on the ground and improving the ramming effect.

[0060] In some other embodiments, to reduce the wear between the first rotating shaft 21 and the fixed bearing seat 14, the number of the eccentric hammers 3 is set to two and they are symmetrically arranged.

[0061] Specifically, in this embodiment, the number of the connecting ends 202 is set to two. As Figure 1 shown, the two connecting ends 202 are spaced and symmetrically arranged on the ramming end 201, and the eccentric hammer 3 is arranged between the connecting end 202 and the end of the ramming end 201.

[0062] During use, the lifting forces of the two eccentric hammers 3 on the rammer frame 2 are symmetrically arranged with respect to the first rotating shaft 21. On the one hand, this makes the friction strength between the first rotating shaft 21 and the multiple fixed bearing seats 14 consistent, and on the other hand, it makes the connection strength between the fixed bearing seats 14 and the rammer frame 2 consistent, thereby helping to reduce wear. At the same time, when the rammer frame 2 strikes the ground, the impact force on the ground is relatively uniform, thus ensuring the compactness of the ground.

[0063] In some other embodiments, to facilitate providing the driving force for the rotation of the first rotating shaft 21, a second rotating shaft 11 is horizontally arranged on the machine base 1; the connecting end 202 is rotatably sleeved on the second rotating shaft 11; the foundation construction rammer device is further provided with a driving component 5 and a transmission component 6, the driving component 5 is configured to be able to drive the second rotating shaft 11 to rotate; the transmission component 6 is configured to be able to transmit the rotation of the second rotating shaft 11 to the first rotating shaft 21.

[0064] Specifically in this embodiment, as Figure 2 shown, the second rotating shaft 11 is arranged at the top of the machine base 1 and is located on the left side; as Figure 1 and Figure 3 shown, when the second rotating shaft 11 is installed, both ends are installed on the machine base 1 through two fixed bearing seats 14.

[0065] In a further embodiment, the driving component 5 is set to include a driving motor 51, a first transmission wheel 52, a second transmission wheel 53 and a first transmission member. The driving motor 51 is arranged on the machine base 1; the first transmission wheel 52 is fixedly sleeved on the motor shaft of the driving motor 51; the second transmission wheel 53 is fixedly sleeved on the second rotating shaft 11; the first transmission member is in transmission connection between the first transmission wheel 52 and the second transmission wheel 53.

[0066] Specifically in this embodiment, as Figure 2 shown, the driving motor 51 is arranged at the top of the machine base 1 and is located in the middle; to facilitate the installation of the driving motor 51, a bracket 12 is arranged at the top of the machine base 1. The bracket 12 is set to have an inverted "π" shape structure. When the driving motor 51 is installed, it is set to be fixedly connected to the top of the bracket 12 through bolts, and the motor shaft of the driving motor 51 is horizontally directed to the left; both the first transmission wheel 52 and the second transmission wheel 53 can be set as belt wheels; the first transmission member can be set as a first transmission belt 54, and when the first transmission belt 54 is installed, one end is in transmission connection and sleeved on the first transmission wheel 52, and the other end is in transmission connection and sleeved on the second transmission wheel 53.

[0067] During use, start the driving motor 51. The driving motor 51 drives the first transmission wheel 52 to rotate. The first transmission wheel 52 drives the second transmission wheel 53 to rotate through the first transmission belt 54, and the second transmission wheel 53 drives the second rotating shaft 11 to rotate.

[0068] It can be understood that the first driving wheel 52 and the second driving wheel 53 can also be set as sprockets; the first transmission member can also be set as a chain.

[0069] In other embodiments, the transmission assembly 6 is set to include a third driving wheel 61, a fourth driving wheel 62 and a second transmission member. The third driving wheel 61 is fixedly sleeved on the second rotating shaft 11; the fourth driving wheel 62 is fixedly sleeved on the first rotating shaft 21; the second transmission member is drivingly connected between the third driving wheel 61 and the fourth driving wheel 62.

[0070] Specifically in this embodiment, as Figure 1 shown, both the third driving wheel 61 and the fourth driving wheel 62 can be set as belt wheels; the second transmission member can be set as a second transmission belt 63, and when the second transmission belt 63 is installed, one end is drivingly sleeved on the third driving wheel 61, and the other end is drivingly sleeved on the fourth driving wheel 62.

[0071] During use, the second rotating shaft 11 drives the third driving wheel 61 to rotate self - sufficiently. The third driving wheel 61 drives the fourth driving wheel 62 to rotate self - sufficiently through the second transmission belt 63, and the fourth driving wheel 62 drives the first rotating shaft 21 to rotate self - sufficiently.

[0072] It can be understood that the third driving wheel 61 and the fourth driving wheel 62 can also be set as sprockets; the second transmission member can also be set as a chain.

[0073] In some other embodiments, for facilitating the pushing of the machine base 1 forward, as Figure 2 shown, a handle 13 is fixedly arranged on the top of the machine base 1. The handle 13 is arranged on the right side and is set as a rod - shaped structure with the shape of "П".

[0074] Combined with the above - mentioned embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0075] During use, start the driving motor 51. The driving motor 51 drives the first driving wheel 52 to rotate self - sufficiently. The first driving wheel 52 drives the second driving wheel 53 to rotate self - sufficiently through the first transmission belt 54, and the second driving wheel 53 drives the second rotating shaft 11 to rotate self - sufficiently; during the rotation of the second rotating shaft 11, the second rotating shaft 11 drives the third driving wheel 61 to rotate self - sufficiently. The third driving wheel 61 drives the fourth driving wheel 62 to rotate self - sufficiently through the second transmission belt 63, and the fourth driving wheel 62 drives the first rotating shaft 21 to rotate self - sufficiently; during the rotation of the first rotating shaft 21, the first rotating shaft 21 synchronously drives the mounting disc 31 to rotate through the key 44, the clip 43 and the driving cylinder 42. The mounting disc 31 drives the counterweight 32 thereon to rotate. The counterweight 32 passes through the first quadrant, the second quadrant, the third quadrant and the fourth quadrant in sequence and forms a cycle; at the same time, the machine base 1 is pushed forward through the handle 13.

[0076] During the rotation of the counterweight 32, when the counterweight 32 is in the first quadrant, the two drive cylinders 42 are respectively located in the first quadrant and the third quadrant. The output shaft of the drive cylinder 42 located in the first quadrant extends, and the output shaft of the drive cylinder 42 located in the third quadrant retracts, so that the counterweight 32 moves away from the first rotating shaft 21, thereby increasing the centrifugal force received by the counterweight 32 to drive the rammer frame 2 to rise to a higher height. When the counterweight 32 is in the second quadrant, the distance between the counterweight 32 and the first rotating shaft 21 remains unchanged, so that the counterweight 32 still has a large centrifugal force. At this time, the eccentric hammer 3 can continue to drive the rammer frame 2 to rise. When the counterweight 32 is in the third quadrant, the two drive cylinders 42 are respectively located in the first quadrant and the third quadrant. The output shaft of the drive cylinder 42 located in the first quadrant extends, and the output shaft of the drive cylinder 42 located in the third quadrant retracts, so that the counterweight 32 moves closer to the first rotating shaft 21. The thrust force of the output shaft of the drive cylinder 42 increases the force on the first rotating shaft 21, and further increases the force on the rammer frame 2, thereby increasing the impact force of the rammer frame 2 on the ground and improving the ramming effect. When the counterweight 32 is in the fourth quadrant, the distance between the counterweight 32 and the first rotating shaft 21 remains unchanged, so that the counterweight 32 still has a small centrifugal force, and thus the horizontal backward component force of the centrifugal force is small, thereby reducing the resistance received when the foundation construction ramming device moves forward.

[0077] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0078] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. A rammed earth device for foundation construction, characterized in that, The rammed earth device for foundation construction includes: A machine base; A rammer frame, which has a rammed earth end and a connection end. The connection end is hinged to the machine base; the rammed earth end is suspended and used for ramming earth. A first rotating shaft is horizontally arranged on the rammed earth end, and the first rotating shaft can rotate self - sufficiently; Taking any point on the axis of the first rotating shaft as the origin, a vertical plane rectangular coordinate system is established, and the vertical plane rectangular coordinate system has a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant; An eccentric hammer, which includes a mounting disc and a counterweight. The mounting disc is sleeved on the first rotating shaft and can rotate synchronously with the first rotating shaft. The mounting disc can slide along the radial direction of the first rotating shaft; the counterweight is fixedly arranged on the mounting disc; An adjusting mechanism, which is configured to inversely adjust the distance between the counterweight and the first rotating shaft according to the soil hardness of the foundation to be rammed when the counterweight is in the third quadrant, and the mounting disc and the counterweight as a whole can move away from or close to the first rotating shaft under the action of the adjusting mechanism; The adjusting mechanism includes a mounting hole and two driving cylinders. The mounting hole is arranged on the mounting disc and extends along the radial direction of the mounting disc. The extending direction of the mounting hole passes through the counterweight; the two driving cylinders are symmetrically inserted into the mounting hole, and the ends of the output shafts of the two driving cylinders are jointly clamped on the first rotating shaft; an arc - shaped clamping piece is fixedly sleeved at the end of each driving cylinder. The clamping piece is sleeved on the first rotating shaft and is connected to the first rotating shaft by a key, so that the mounting disc can follow the first rotating shaft to rotate; The adjusting mechanism is also configured to keep the distance between the counterweight and the first rotating shaft when the counterweight is in the third quadrant when the counterweight is in the fourth quadrant, to directly adjust the distance between the counterweight and the first rotating shaft according to the soil hardness of the foundation to be rammed when the counterweight is in the first quadrant, and to keep the distance between the counterweight and the first rotating shaft when the counterweight is in the first quadrant when the counterweight is in the second quadrant.

2. The rammed earth device for foundation construction according to claim 1, characterized in that, The output power of the driving cylinder is provided by hydraulic pressure.

3. The rammed earth device for foundation construction according to claim 1, wherein The number of eccentric hammers is two and they are symmetrically arranged.

4. The rammed earth device for foundation construction according to claim 1, characterized in that, A second rotating shaft is horizontally arranged on the machine base; the connection end is rotatably sleeved on the second rotating shaft; the rammed earth device for foundation construction also includes a driving component and a transmission component. The driving component is configured to drive the second rotating shaft to rotate self - sufficiently; the transmission component is configured to transmit the rotation of the second rotating shaft to the first rotating shaft.

5. The ramming soil device for foundation construction according to claim 4, wherein, The driving component includes a driving motor, a first transmission wheel, a second transmission wheel, and a first transmission member. The driving motor is arranged on the machine base; the first transmission wheel is fixedly sleeved on the motor shaft of the driving motor; the second transmission wheel is fixedly sleeved on the second rotating shaft; the first transmission member is connected between the first transmission wheel and the second transmission wheel in a transmission manner.

6. The ramming soil device for foundation construction according to claim 4, wherein The transmission component includes a third transmission wheel, a fourth transmission wheel, and a second transmission member. The third transmission wheel is fixedly sleeved on the second rotating shaft; the fourth transmission wheel is fixedly sleeved on the first rotating shaft; the second transmission member is connected between the third transmission wheel and the fourth transmission wheel in a transmission manner.

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