Soft foundation gravel replacing and filling device

Abstract

The invention relates to the technical field of foundation replacement and filling, in particular to a soft foundation gravel replacement and filling device. Comprising an excavator body, a walking mechanism is arranged at the bottom of the excavator body, a large arm and a large arm telescopic piece are hinged to the excavator body, a small arm and a small arm telescopic piece are hinged to the large arm, an excavator bucket and an excavator bucket telescopic piece are hinged to the small arm, and the excavator bucket is hinged to the excavator bucket telescopic piece. The excavator bucket is arranged in a fan shape, openings are formed in the two ends of an arc of the fan shape, and a partition plate is rotationally connected into the excavator bucket. According to the construction method, gravel filling can be conducted through the opening in one side, excavation of a soft soil layer is conducted through the opening in the other side, gravel backfilling, leveling and compacting can be conducted immediately after the soft soil layer is excavated, collapse in the excavation process is avoided, the construction efficiency is improved, and the construction effect is guaranteed. Through the ingenious structural design, excavation and backfilling are conducted synchronously, an efficient solution is provided for soft foundation treatment, the construction risk and cost are reduced, and the engineering quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation replacement, and in particular to a soft foundation sand and gravel replacement device. Background Art

[0002] In engineering and infrastructure construction, especially in water conservancy project construction, soft foundations are often formed due to the high water content and large porosity of the foundation. Soft foundations have low bearing capacity and poor stability, which can easily lead to building settlement, tilting, and even damage. Sand and gravel replacement is a commonly used method for soft foundation treatment. The soft soil layer is excavated and then backfilled with sand and gravel materials with certain strength and stability to improve the bearing capacity and stability of the foundation.

[0003] In the related art, the existing excavation equipment is often limited in excavation efficiency when facing soft foundations. Due to the characteristics of the soft soil layer, if it is difficult to backfill immediately after excavating the original soft soil layer, collapse is likely to occur during the excavation process, which in turn affects the construction efficiency and backfill effect.

[0004] Therefore, how to avoid collapse during the excavation process and ensure the construction efficiency and backfill effect of the sand and gravel replacement method is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] In order to avoid collapse during the excavation process and ensure the construction efficiency and backfill effect of the sand and gravel replacement method, the present application provides a sand and gravel replacement device for a soft foundation.

[0006] The present application provides a soft foundation sand and gravel replacement device that adopts the following technical solution: A device for replacing sand and gravel in a soft foundation comprises an excavator body, a walking mechanism is provided at the bottom of the excavator body, a boom and a telescopic part of the boom are hingedly connected to the excavator body, a forearm and a telescopic part of the forearm are hingedly connected to the boom, a bucket and a telescopic part of the bucket are hingedly connected to the forearm, an L-shaped extension arm is fixedly connected to the bucket, the L-shaped extension arm is hingedly connected to the telescopic part of the bucket, the bucket is arranged in a fan shape and openings are provided at both ends of the arc of the fan, and a partition is rotatably connected to the inside of the bucket.

[0007] By adopting the above technical solution, the walking mechanism can be used to drive the excavator body to move as a whole, the boom telescopic member can drive the boom to swing, the forearm telescopic member can drive the forearm to swing, and the bucket telescopic member can drive the bucket to swing. The excavation and filling construction can be realized by combining the coordinated actions of the boom, the forearm and the bucket. Before excavating the soft foundation, the partition is swung to the opening on the bucket close to the side of the excavator body and is sealed. In this way, the sand and gravel for replacement are contained in the bucket, and when the soft foundation is excavated, the partition is sealed. During excavation, the soil of the soft foundation is excavated through the coordinated actions of the upper arm, the lower arm and the bucket. At the same time, the partition will rotate relative to the bucket during the excavation process, and the sand and gravel originally contained in the bucket will be filled into the pit formed by the excavated soft soil. At the same time, the sand and gravel filled in the pit will be leveled and preliminarily compacted through the outer side of the bucket away from its rotation center. In this way, it is difficult to backfill sand and gravel and level and compact immediately after excavating the original soft soil layer, which can effectively avoid collapse during the excavation process, improve the construction efficiency of backfilling sand and gravel, and ensure the construction effect of backfilling sand and gravel.

[0008] Furthermore, the bucket is rotatably connected to a swing shaft near the rotation center connected to the forearm, the partition is fixedly connected to the swing shaft, and both ends of the swing shaft pass through the positions outside the bucket and are fixedly connected to large gears, the bucket is rotatably connected to a gear shaft corresponding to the large gear, the gear shaft meshes with the large gear, and one end of the gear shaft located inside the bucket is fixedly connected to a driving cylinder, a plurality of annularly evenly distributed transmission grooves are provided inside the driving cylinder, a driving body is rotatably connected inside the driving cylinder, an installation groove corresponding to the transmission groove is provided on the driving body, a tension spring is fixedly connected inside the installation groove, a driving block is slidably connected inside the installation groove, the driving block is fixedly connected to the tension spring, a first driving member is installed inside the bucket corresponding to the driving body, and the first driving member is fixedly connected to the two driving bodies at the same time.

[0009] By adopting the above technical solution, the first driving member can simultaneously drive the two driving bodies and the driving block inside the installation groove to rotate, and the driving block will overcome the tension of the tension spring under the action of centrifugal force and slide out of the installation groove. The moment the driving block slides out of the installation groove, it will enter the transmission groove, and then drive the driving cylinder to rotate through the driving block, and finally drive the partition to swing through the gear shaft and the large gear. The swing of the partition can not only improve the efficiency of containing sand and gravel or discharging sand and gravel, but also improve the efficiency of excavating soil or pouring out soil, further improving the construction efficiency of backfilling sand and gravel.

[0010] Furthermore, the inner side surface of the bucket away from its rotation center is set as an inner arc surface, the center of the inner arc surface coincides with the rotation center of the partition, and one end of the partition away from its rotation center slides in contact with the inner arc surface.

[0011] By adopting the above technical solution, the design of the inner arc surface can better cooperate with the rotation of the partition, so that the inside of the bucket can be cleaned during the rotation of the partition.

[0012] Furthermore, a limit position is provided on the bucket at the opening corresponding to the partition, and the side of the limit position close to the partition is provided as a plane, and the side of the limit position away from the partition is provided as an inclined surface.

[0013] By adopting the above technical solution, the partition can be restricted inside the bucket by utilizing the limiter to prevent the partition from accidentally falling out, thereby ensuring stability and reliability during the construction process.

[0014] Furthermore, the opening is fixedly connected to a position away from the rotation center of the bucket with a first digging tooth and a second digging tooth which are symmetrically arranged. The first digging tooth is located on a side of the bucket close to the excavator body, and the second digging tooth is located on a side of the bucket away from the excavator body. The first digging tooth is provided with an arc end for easy insertion into a soft foundation soil layer, and the second digging tooth is provided with a pointed end for easy insertion of sand and gravel replacement material.

[0015] By adopting the above technical solution, the arc end design on the first digging tooth can be used to make it insert more smoothly when it contacts the soft foundation soil layer. The tip design on the second digging tooth can ensure that the bucket can quickly and accurately grab sand and gravel, thereby increasing the speed of the replacement and filling operation. Such an optimized design for different working conditions can improve the excavation performance, thereby improving the excavation efficiency while also being conducive to improving the adaptability of the excavation construction.

[0016] Furthermore, the outer side surface of the bucket away from its rotation center is set as an outer arc surface, and a sliding pressure plate that fits the outer arc surface is fixedly connected to the bucket. The side of the sliding pressure plate away from the outer arc surface forms a special-shaped surface according to the thickness change of the sliding pressure plate, and the special-shaped surface includes at least a second arc surface. The radius of the outer arc surface is smaller than the radius of the second arc surface, and the end of the second arc surface close to the excavator body is tangent to the outer arc surface.

[0017] By adopting the above technical solution, the sliding plate can be used to simultaneously squeeze the pit surface formed after the soil layer is excavated during the excavation construction process. As the bucket rotates, the sliding plate will slide on the pit surface formed after the soil layer is excavated, and the change in thickness of the sliding plate will form an extrusion force on the pit surface. On the one hand, the volume of the pit can be expanded to facilitate sand and gravel to enter the pit better, and on the other hand, the soil in the pit can be compacted, thereby improving the structural strength of the foundation.

[0018] Furthermore, a tamping plate is hingedly connected to the bottom of the excavator body, a rocker arm is fixedly connected to the tamping plate, a rocker arm telescopic part is hingedly connected to the excavator body corresponding to the rocker arm, the rocker arm telescopic part is hingedly connected to the rocker arm, and a tamping mechanism is installed on the tamping plate.

[0019] By adopting the above technical solution, the tamping plate can be driven to swing by the rocker arm through the telescopic part of the rocker arm, so that the tamping plate can be lifted by the telescopic part of the rocker arm during normal travel, so as to prevent the tamping mechanism from affecting the normal travel of the entire excavator body. During the construction process, the tamping plate can also be pressed down by the telescopic part of the rocker arm, so that the tamping mechanism can compact the foundation.

[0020] Furthermore, the ramming mechanism includes a ramming plate body, an elastic connecting piece is provided between the ramming plate body and the ramming plate, the ramming plate body is hingedly connected to the elastic connecting piece, a second driving piece is installed inside the ramming plate body, an eccentric block is installed on the output shaft of the second driving piece, and the ramming plate body is fixedly connected to a ramming seat away from the elastic connecting piece.

[0021] By adopting the above technical solution, the second driving member can drive the eccentric block to rotate, and the centrifugal force generated during the rotation of the eccentric block will cause the ramming plate body to generate periodic vibration and impact force. The impact force generated by the eccentric block can reduce the gaps between sand and gravel particles, increase the contact area and friction between particles, and thus improve the bearing capacity and stability of the foundation.

[0022] Furthermore, the elastic connecting member includes a cylinder, which is fixedly connected to the tamping plate, and a slider is slidably connected to the inside of the cylinder. The upper and lower ends of the slider are both provided with springs that abut against the inner end of the cylinder. The slider is fixedly connected to a connecting rod that passes through one of the springs, and the connecting rod passes through one end of the cylinder to the outside and is hingedly connected to the tamping plate body.

[0023] By adopting the above technical solution, the cylinder can provide a stable working environment for the slider and the spring, and the cylinder limits the movement direction of the slider, so that the slider can only slide up and down inside the cylinder. This helps to improve the reliability and stability of the tamping mechanism, prevents the slider from deflecting or shaking during operation, and thus ensures the consistency of the buffering effect. The spring can absorb and store part of the energy through elastic deformation, thereby effectively reducing the impact of the reaction force on the tamping plate and the mounting structure, which can reduce the vibration amplitude of the equipment, thereby avoiding damage to the mounting structure, which is conducive to improving the service life of the tamping mechanism.

[0024] Furthermore, the boom telescopic member, the arm telescopic member, and the bucket telescopic member are all configured as hydraulic telescopic cylinders.

[0025] By adopting the above technical solution, the hydraulic telescopic cylinder can not only provide a strong output force, but also a stable output force, which is conducive to ensuring a smoother excavation process and reducing the impact on the equipment and the surrounding environment. In addition, the hydraulic telescopic cylinder has a quick response and can be extended and retracted quickly. This enables the excavator to respond to various changes more flexibly during the operation process, further ensuring the work efficiency of the sand and gravel replacement construction.

[0026] Beneficial effects achieved: The present application sets the bucket into a fan shape, and rotates and connects the partition that fits the fan shape inside the bucket, and sets symmetrical openings at the same time. Sand and gravel can be filled through the opening on one side, and soft soil layers can be excavated through the opening on the other side. After excavating the soft soil layer, sand and gravel can be immediately backfilled, leveled and compacted to avoid collapse during the excavation process, improve construction efficiency and ensure construction results. The present application realizes simultaneous excavation and backfilling through clever structural design, provides an efficient solution for soft foundation treatment, reduces construction risks and costs, and improves project quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structural decomposition of a bucket in one embodiment of the present application.

[0031] Figure 5 yes Figure 4Schematic diagram of the enlarged structure of Part I.

[0032] Figure 6 It is a schematic diagram of the installation structure of the bucket in one embodiment of the present application.

[0033] Figure 7 yes Figure 6 Schematic diagram of the AA section structure.

[0034] Figure 8 It is a schematic diagram of the structural decomposition of the tamping mechanism in one embodiment of the present application.

[0035] Fig. 9 yes Figure 7 Schematic diagram of the enlarged structure of Part II.

[0036] Description of reference numerals: 100, excavator body; 101, walking mechanism; 102, boom; 103, boom telescopic member; 104, arm; 105, arm telescopic member; 106, bucket; 107, bucket telescopic member; 108, L-shaped extension arm; 109, opening; 110, partition; 111, swing shaft; 112, large gear; 113, gear shaft; 114, inner arc surface; 115, limit; 1152, plane; 1151, inclined surface; 116, first digging tooth; 117, second digging tooth; 118, outer arc surface; 119, sliding plate; 12 0. Special-shaped surface; 1201. First arc surface; 1202. Second arc surface; 121. Driving cylinder; 122. Transmission groove; 123. Driving body; 124. Mounting groove; 125. Tension spring; 126. Driving block; 127. First driving member; 200. Ramming plate; 201. Rocker arm; 202. Rocker arm telescopic member; 300. Ramming mechanism; 301. Ramming plate body; 302. Second driving member; 303. Eccentric block; 304. Ramming seat; 400. Elastic connecting member; 401. Cylinder body; 402. Sliding block; 403. Spring; 404. Connecting rod. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-9 This application is described in further detail.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The embodiment of the present application discloses a device for replacing sand and gravel in a soft foundation.

[0041] Please refer to Figures 1 to 9 In one embodiment of the present application, a soft foundation gravel replacement device includes an excavator body 100, and a walking mechanism 101 is provided at the bottom of the excavator body 100. The walking mechanism 101 can drive the excavator body 100 to move as a whole. The walking mechanism 101 is configured as a crawler walking mechanism. The crawler of the crawler walking mechanism has a large contact area with the ground, which can evenly distribute the weight of the equipment to a larger area, thereby reducing the pressure on the ground. This allows the crawler walking mechanism to travel on soft ground, such as sand, mud, etc., and ground with low bearing capacity without sinking into it.

[0042] It is understood that in other embodiments of the present application, the walking mechanism 101 can also be configured as a variety of anti-skid and load-bearing walking mechanisms such as tire-type, track-type and special terrain walking mechanisms. The tire-type walking mechanism can use wide-base tires or multiple tire combinations. The ultra-wide tire design can increase the contact area with the ground, thereby improving the load-bearing capacity. At the same time, anti-skid patterns are set on the tire surface to enhance the anti-skid performance. The use of multiple tire combinations can disperse the overall weight of the excavator body 100, thereby improving the load-bearing capacity.

[0043] Please refer to Figures 1 to 9 In one embodiment of the present application, a boom 102 is hingedly connected to an excavator body 100, and two boom telescopic parts 103 hingedly connected to the excavator body 100 are symmetrically arranged on both sides of the boom 102. The boom telescopic part 103 and one end of the boom 102 away from the excavator body 100 are hingedly connected to each other, and the boom 102 can be driven to swing by controlling the boom telescopic part 103 to extend and retract.

[0044] Please refer to Figures 1 to 9In one embodiment of the present application, a forearm 104 and a forearm telescopic member 105 are hingedly connected to the upper arm 102, and the forearm 104 and the forearm telescopic member 105 are also hingedly connected to each other at one end away from the upper arm 102. The forearm 104 can be driven to swing by controlling the telescopic member 105 to extend and retract.

[0045] Please refer to Figures 1 to 9 In one embodiment of the present application, a bucket 106 and a bucket telescopic member 107 are hingedly connected to the arm 104, and two symmetrically arranged L-shaped extension arms 108 are fixedly connected to the bucket 106, and the L-shaped extension arms 108 are hingedly connected to the bucket telescopic member 107, such as Figure 3 As shown, the design of the L-shaped extension arm 108 reduces the interference between the bucket telescopic member 107 and the bucket 106 when the bucket telescopic member 107 contracts and drives the bucket 106 to rotate along the F direction, thereby increasing the rotation angle of the bucket 106.

[0046] Please refer to Figures 1 to 9 In one embodiment of the present application, the bucket 106 is arranged in a fan shape and has openings 109 at both ends of the fan-shaped arc. The bucket 106 is rotatably connected to the inside with a partition 110. The design of the partition 110 can form a bottom seal at one of the openings 109 of the bucket 106 as needed, while opening the other opening 109. In this way, one material can be loaded and another material can be unloaded at the same time, which not only reduces repeated operations, but also saves time and energy, and is conducive to improving the efficiency of loading and unloading.

[0047] Please refer to Figures 1 to 9 In a specific embodiment of the present application, the boom telescopic member 103, the arm telescopic member 105, and the bucket telescopic member 107 are all configured as hydraulic telescopic cylinders. The hydraulic telescopic cylinder can not only provide a strong output force, but also has a stable output force, which is conducive to ensuring a smoother excavation process and reducing the impact on the equipment and the surrounding environment. In addition, the hydraulic telescopic cylinder has a quick response and can achieve rapid extension and retraction. This enables the excavator to respond to various changes more flexibly during operation, further ensuring the work efficiency of sand and gravel replacement construction.

[0048] It can be understood that in other specific embodiments of the present application, the boom telescopic member 103, the arm telescopic member 105, and the bucket telescopic member 107 can also be configured as other devices or structures that can achieve linear motion, such as screw drive, rack and pinion drive, linear guide rails, and pneumatic cylinders.

[0049] During the replacement construction of the soft foundation, the excavation and filling construction can be realized by combining the coordinated actions of the upper arm 102, the lower arm 104, and the bucket 106. Before excavating the soft foundation, the partition 110 is swung to the opening 109 on the bucket 106 close to the side of the excavator body 100 and sealed, and then the sand and gravel used for replacement are placed inside the bucket 106. When excavating the soft foundation, the soil of the soft foundation is excavated through the coordinated actions of the upper arm 102, the lower arm 104, and the bucket 106. At the same time, the partition 110 will rotate relative to the bucket 106 during the excavation process, and fill the sand and gravel originally contained in the bucket 106 into the pit formed by the excavated soft soil, and at the same time, the sand and gravel filled in the pit are leveled and preliminarily compacted through the outer side of the bucket 106 away from its rotation center. In this way, it is difficult to backfill sand and gravel and level and compact it immediately after excavating the original soft soil layer. This can not only effectively avoid collapse during the excavation process, but also improve the construction efficiency of backfilling sand and gravel, and ensure the construction effect of backfilling sand and gravel.

[0050] Please refer to Figures 1 to 9 In one embodiment of the present application, a swing shaft 111 is rotatably connected to the bucket 106 near the rotation center connected to the small arm 104, and the partition 110 is fixedly connected to the swing shaft 111 by welding to form a whole. Both ends of the swing shaft 111 pass through the positions outside the bucket 106 and are fixedly connected to large gears 112. The bucket 106 is rotatably connected to the corresponding large gear 112. The gear shaft 113 is meshed with the large gear 112 to form a reduction transmission. The end of the gear shaft 113 located inside the bucket 106 is fixedly connected to a driving Cylinder 121, a plurality of annular evenly distributed transmission grooves 122 are provided inside the driving cylinder 121, a driving body 123 is rotatably connected inside the driving cylinder 121, a mounting groove 124 corresponding to the transmission groove 122 is provided on the driving body 123, a tension spring 125 is fixedly connected inside the mounting groove 124, a driving block 126 is slidably connected inside the mounting groove 124, the driving block 126 is fixedly connected to the tension spring 125, a first driving member 127 is installed inside the bucket 106 corresponding to the driving body 123, and the first driving member 127 is fixedly connected to the two driving bodies 123 at the same time.

[0051] During the working process, the tension spring 125 will naturally pull the driving block 126 into the interior of the mounting groove 124, so that when the partition 110 rotates relative to the bucket 106 during the excavation process, it will drive the large gear 112, the gear shaft 113 and the driving cylinder 121 to rotate instead of reversely driving the first driving member 127 through the driving block 126, thereby ensuring the stability and reliability of the first driving member 127. When the first driving member 127 is working, the first driving member 127 will simultaneously drive the two driving bodies 123 and the driving block 126 inside the mounting groove 124 to rotate, and the driving block 126 will overcome the pulling force of the tension spring 125 under the action of centrifugal force and slide out of the mounting groove 124. When the driving block 126 slides out of the mounting groove 124, it will enter the transmission groove 122, and then drive the driving cylinder 121 to rotate through the driving block 126, and finally drive the partition 110 to swing through the gear shaft 113 and the large gear 112. The swing of the partition 110 can sweep the sand and gravel filling or soft soil layer inside the bucket 106 out of the bucket 106, thereby improving the work efficiency of pouring out the soft soil layer or sand and gravel filling during sand and gravel replacement construction.

[0052] In a specific embodiment of the present application, the first driving member 127 is configured as a dual-axle extension motor, and the dual-axle extension motor is fixedly connected to the two driving blocks 126 at the same time. The dual-axle extension motor as the first driving member 127 is fixedly connected to the two driving blocks 126 at the same time, and can provide symmetrical power. This symmetry ensures that the driving bodies 123 on both sides are evenly stressed. The use of a dual-axle extension motor can more reasonably arrange the power transmission structure within the limited internal space of the bucket. Since the two axles of the motor are directly connected to the driving blocks 126, no additional space is required to set up a complex power distribution device, making the entire structure more compact.

[0053] Please refer to Figures 1 to 9 In one embodiment of the present application, the inner side surface of the bucket 106 away from its rotation center is set as an inner arc surface 114, the center of the inner arc surface 114 coincides with the rotation center of the partition 110, and the end of the partition 110 away from its rotation center slides in contact with the inner arc surface 114. The design of the inner arc surface 114 can better cooperate with the rotation of the partition 110, so that the inside of the bucket 106 can be cleaned during the rotation of the partition 110.

[0054] Please refer to Figures 1 to 9In one embodiment of the present application, a limit stop 115 is provided on the bucket 106 at the opening 109 corresponding to the partition 110, and a side of the limit stop 115 close to the partition 110 is provided with a plane 1152, and a side of the limit stop 115 away from the partition 110 is provided with an inclined surface 1151. The plane 1152 designed on the limit stop 115 can limit the partition 110 inside the bucket 106, preventing the partition 110 from accidentally falling out, and ensuring stability and reliability during the construction process. The inclined surface 1151 designed on the limit stop 115 can reduce the resistance to the material entering the bucket 106 when digging soil or loading fillers.

[0055] Please refer to Figures 1 to 9 In one embodiment of the present application, a first digging tooth 116 and a second digging tooth 117 are fixedly connected to a position at the opening 109 away from the rotation center of the bucket 106, and the first digging tooth 116 is located on the side of the bucket 106 close to the excavator body 100, and the second digging tooth 117 is located on the side of the bucket 106 away from the excavator body 100. The first digging tooth 116 is provided with an arc end that is convenient for inserting into a soft foundation soil layer. The arc end design on the first digging tooth 116 enables it to be inserted more smoothly when it contacts a soft foundation soil layer. The second digging tooth 117 is provided with a tip that is convenient for inserting sand and gravel replacement. The tip design on the second digging tooth 117 can ensure that the bucket can quickly and accurately grab sand and gravel, and improve the speed of the replacement operation. Such an optimized design for different working conditions can improve the excavation performance, thereby improving the excavation efficiency while also helping to improve the adaptability of excavation construction.

[0056] Please refer to Figures 1 to 9 In one embodiment of the present application, the outer side surface of the bucket 106 away from its rotation center is set as an outer arc surface 118, and a sliding pressure plate 119 is fixedly connected to the bucket 106 and fits with the outer arc surface 118. The side of the sliding pressure plate 119 away from the outer arc surface 118 forms a special-shaped surface 120 according to the thickness change of the sliding pressure plate 119. The special-shaped surface 120 is composed of a first arc surface 1201 and a second arc surface 1202 with two different radii. The radius of the first arc surface 1201 is smaller than the radius of the second arc surface 1202, and the radius of the outer arc surface 118 is also smaller than the radius of the second arc surface 1202. The first arc surface 1201 is located on the side of the bucket 106 away from the excavator body 100, and the second arc surface 1202 is located on the side of the bucket 106 away from the excavator body 100. The end of the second arc surface 1202 close to the excavator body 100 is tangent to the outer arc surface 118.

[0057] During the replacement construction of the weak foundation, as the bucket 106 rotates, the sliding plate 119 will slide on the pit surface formed after the soil layer is excavated, and the change in thickness of the sliding plate 119 will form an extrusion pressure on the pit surface. On the one hand, it can expand the volume of the pit to facilitate sand and gravel to enter the pit better, and on the other hand, it can compact the soil in the pit, thereby improving the structural strength of the foundation.

[0058] Please refer to Figures 1 to 9 In one embodiment of the present application, a tamping plate 200 is hingedly connected to the bottom of the excavator body 100, and a rocker arm 201 is fixedly connected to the tamping plate 200. A rocker arm telescopic member 202 is hingedly connected to the corresponding rocker arm 201 on the excavator body 100. The rocker arm telescopic member 202 is hingedly connected to the rocker arm 201. The rocker arm telescopic member 202 can drive the tamping plate 200 to swing through the rocker arm 201, so that the tamping plate 200 can be lifted up by the rocker arm telescopic member 202 during normal travel, so as to prevent the tamping mechanism 300 from affecting the normal travel of the excavator body 100 as a whole.

[0059] Please refer to Figures 1 to 9 In one embodiment of the present application, a tamping mechanism 300 is installed on the tamping plate 200. The tamping mechanism 300 includes a tamping plate body 301, an elastic connecting member 400 is provided between the tamping plate body 301 and the tamping plate 200, the tamping plate body 301 is hingedly connected to the elastic connecting member 400, two symmetrically arranged second driving members 302 are installed inside the tamping plate body 301, and eccentric blocks 303 are installed on the output shafts of the second driving members 302, and a tamping seat 304 is fixedly connected to the tamping plate body 301 away from the elastic connecting member 400.

[0060] During the construction process, the tamping plate 200 can also be pressed down by the rocker telescopic member 202, so that the tamping mechanism 300 can compact the foundation, and the basic distance of the tamping plate 200 can be controlled by adjusting the telescopic length of the rocker telescopic member 202, so that the backfilled foundation can be compacted according to the actual working conditions. During the compaction process, the second driving member 302 can drive the eccentric block 303 to rotate, and the centrifugal force generated during the rotation of the eccentric block 303 will cause the tamping plate body 301 to generate periodic vibration and impact force. The impact force generated by the eccentric block 303 can reduce the gaps between the sand and gravel particles, increase the contact area and friction between the particles, and thus improve the bearing capacity and stability of the foundation.

[0061] In a specific embodiment of the present application, the rocker arm telescopic member 202 is configured as a hydraulic telescopic cylinder. The hydraulic telescopic cylinder can not only provide a strong output force, but also has a stable output force, which is conducive to ensuring that the excavation process is more stable and drives the rocker arm 201 and the tamping plate 200 to swing. Thereby ensuring the stability and reliability of the swing of the tamping plate 200 during the working process.

[0062] It is understandable that in other specific embodiments of the present application, the rocker arm telescopic member 202 can also be configured as other devices or structures that can achieve linear motion, such as a screw drive, a gear rack drive, a linear guide rail, and a pneumatic cylinder.

[0063] In a specific embodiment of the present application, the second driving member 302 is configured as a hydraulic motor, which can not only generate a strong output torque, but also adapt to high-load work. When dealing with the sand and gravel replacement of soft foundation, it can easily overcome the resistance and compact the sand and gravel. Compared with other driving devices, it has obvious advantages in output torque, can ensure that the tamping mechanism has enough power to complete the task, and the output is stable, so that the tamping force is more uniform, improves the construction quality, reduces equipment vibration and noise, and prolongs the service life. And it has good speed regulation performance. The flow of the hydraulic system can be adjusted to achieve stepless speed regulation to meet the requirements of tamping frequency and speed in different construction scenes. In order to adjust the speed according to the nature of the foundation and the compaction requirements, obtain the best tamping effect, and accurately control the tamping force to meet the needs of high-precision construction. At the same time, the hydraulic motor has high reliability, can adapt to harsh environments, has strong overload resistance, and can automatically adjust the output torque when encountering hard obstacles or sudden load increases to ensure the normal operation of the equipment. It has low requirements for the working environment and can operate reliably under harsh conditions such as high temperature, high humidity, and dust, which is conducive to ensuring the service life of the equipment.

[0064] It is understandable that in other specific embodiments of the present application, the second driving member 302 can also be configured as a device or mechanism that can provide strong power, such as a pneumatic motor, an electric motor, or an engine.

[0065] Please refer to Figures 1 to 9In one embodiment of the present application, the elastic connector 400 includes a cylinder 401, which is fixedly connected to the tamping plate 200. A slider 402 is slidably connected inside the cylinder 401. The cylinder 401 can provide a stable working environment for the slider 402 and the spring 403. The cylinder 401 limits the movement direction of the slider 402, so that the slider 402 can only slide up and down inside the cylinder. This helps to improve the reliability and stability of the tamping mechanism 300. The upper and lower ends of the slider 402 are both provided with springs 403 that abut against the inner ends of the cylinder 401. The slider 402 is fixedly connected to a connecting rod 404 that is inserted into one of the springs 403. One end of the connecting rod 404 that passes through the outside of the cylinder 401 is hingedly connected to the tamping plate body 301. The slider 402 is prevented from deflecting or shaking during operation, thereby ensuring the consistency of the buffering effect. The spring 403 can absorb and store part of the energy through elastic deformation, thereby effectively reducing the impact of the reaction force on the tamping plate 200 and the mounting structure. This can reduce the vibration amplitude of the equipment, thereby avoiding damage to the mounting structure and is beneficial to increasing the service life of the tamping mechanism 300.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A soft foundation sand and gravel replacement device, characterized by: The invention comprises an excavator body (100), wherein a walking mechanism (101) is provided at the bottom of the excavator body (100), a boom (102) and a boom telescopic member (103) are hingedly connected to the excavator body (100), a forearm (104) and a forearm telescopic member (105) are hingedly connected to the boom (102), a bucket (106) and a bucket telescopic member (107) are hingedly connected to the forearm (104), an L-shaped extension arm (108) is fixedly connected to the bucket (106), the L-shaped extension arm (108) is hingedly connected to the bucket telescopic member (107), the bucket (106) is arranged in a fan shape and openings (109) are arranged at both ends of the fan-shaped arc, and a partition (110) is rotatably connected to the inside of the bucket (106).

2. The soft foundation sand and gravel replacement device according to claim 1 is characterized by: The bucket (106) is rotatably connected to a swing shaft (111) near the rotation center connected to the forearm (104); the partition plate (110) is fixedly connected to the swing shaft (111); both ends of the swing shaft (111) pass through the outside of the bucket (106) and are fixedly connected to a large gear (112); the bucket (106) is rotatably connected to a gear shaft (113) corresponding to the large gear (112); the gear shaft (113) meshes with the large gear (112); one end of the gear shaft (113) located inside the bucket (106) is fixedly connected to a drive cylinder (121); the drive cylinder (121) is opened inside A plurality of transmission grooves (122) are evenly distributed in an annular shape. A driving body (123) is rotatably connected inside the driving cylinder (121). A mounting groove (124) corresponding to the transmission groove (122) is provided on the driving body (123). A tension spring (125) is fixedly connected inside the mounting groove (124). A driving block (126) is slidably connected inside the mounting groove (124). The driving block (126) is fixedly connected to the tension spring (125). A first driving member (127) is installed inside the bucket (106) corresponding to the driving body (123). The first driving member (127) is fixedly connected to the two driving bodies (123) at the same time.

3. The soft foundation sand and gravel replacement device according to claim 1 is characterized by: The inner side surface of the bucket (106) away from its rotation center is set as an inner arc surface (114), the center of the inner arc surface (114) coincides with the rotation center of the partition (110), and one end of the partition (110) away from its rotation center fits and slides with the inner arc surface (114).

4. The soft foundation sand and gravel replacement device according to claim 1 is characterized by: A limit position (115) is provided on the bucket (106) at the opening (109) corresponding to the partition (110); the side of the limit position (115) close to the partition (110) is provided as a plane, and the side of the limit position (115) away from the partition (110) is provided as an inclined surface.

5. The soft foundation sand and gravel replacement device according to claim 1 is characterized by: A first digging tooth (116) and a second digging tooth (117) are fixedly connected to the opening (109) at a position away from the rotation center of the bucket (106), wherein the first digging tooth (116) is located on a side of the bucket (106) close to the excavator body (100), and the second digging tooth (117) is located on a side of the bucket (106) away from the excavator body (100). The first digging tooth (116) is provided with an arc end for easy insertion into a soft foundation soil layer, and the second digging tooth (117) is provided with a pointed end for easy insertion into sand and gravel replacement material.

6. The soft foundation sand and gravel replacement device according to claim 1 is characterized by: The outer side surface of the bucket (106) away from its rotation center is set as an outer arc surface (118), and the bucket (106) is fixedly connected with a sliding plate (119) that fits the outer arc surface (118). The side of the sliding plate (119) away from the outer arc surface (118) forms a special-shaped surface (120) according to the thickness change of the sliding plate (119), and the special-shaped surface (120) includes at least a second arc surface (1202), the radius of the outer arc surface (118) is smaller than the radius of the second arc surface (1202), and the second arc surface (1202) is tangent to the outer arc surface (118) at one end close to the excavator body (100).

7. The soft foundation sand and gravel replacement device according to claim 1 is characterized by: A tamping plate (200) is hingedly connected to the bottom of the excavator body (100), a rocker arm (201) is fixedly connected to the tamping plate (200), a rocker arm telescopic member (202) is hingedly connected to the excavator body (100) corresponding to the rocker arm (201), the rocker arm telescopic member (202) is hingedly connected to the rocker arm (201), and a tamping mechanism (300) is installed on the tamping plate (200).

8. The soft foundation sand and gravel replacement device according to claim 7 is characterized by: The tamping mechanism (300) comprises a tamping plate body (301), an elastic connecting member (400) being provided between the tamping plate body (301) and the tamping plate (200), the tamping plate body (301) being hingedly connected to the elastic connecting member (400), a second driving member (302) being installed inside the tamping plate body (301), an eccentric block (303) being installed on the output shaft of the second driving member (302), and a tamping seat (304) being fixedly connected to the tamping plate body (301) away from the elastic connecting member (400).

9. The soft foundation sand and gravel replacement device according to claim 8 is characterized by: The elastic connecting member (400) comprises a cylinder (401), the cylinder (401) being fixedly connected to the tamping plate (200), a slider (402) being slidably connected inside the cylinder (401), springs (403) being provided at both upper and lower ends of the slider (402) for contact with the inner end of the cylinder (401), a connecting rod (404) being fixedly connected to the slider (402) and passing through one of the springs (403), and one end of the connecting rod (404) passing through the outside of the cylinder (401) being hingedly connected to the tamping plate body (301).

10. A soft foundation sand and gravel replacement device according to any one of claims 1 to 9, characterized in that: The large arm telescopic member (103), the small arm telescopic member (105), and the bucket telescopic member (107) are all configured as hydraulic telescopic cylinders.

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