Earth ramming device for earth-rock engineering construction

Abstract

The earth ramming device for earth-rock engineering construction comprises a frame, the frame comprises a guide frame and a mounting frame, and the mounting frame is fixedly arranged on one side of the guide frame; the rammer is connected to the guide frame in a sliding manner; the rotating shaft is rotationally connected to the mounting frame; the transmission mechanism is arranged between the rammer and the rotating shaft; and the driving mechanism is arranged between the rotating shaft and the mounting frame. According to the earth ramming device for earth-rock engineering construction, adjustability and adaptability of ramming parameters are achieved; by arranging a plurality of incomplete gears with different tooth numbers, a shaft sleeve capable of sliding axially and a limiting assembly, an operator can quickly select the incomplete gear meshed with a rack according to the specific condition of a construction site, so that one device can meet various operation requirements from coarse-grained soil to fine-grained soil and from deep filling to shallow compaction, and the construction efficiency is improved. And the universality and the working condition adaptability of the equipment are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a ramming device for earthwork construction. Background Technology

[0002] The purpose of earthwork compaction is to rearrange loose soil and rock particles into close contact through external force, eliminating internal pores, thereby improving the density, bearing capacity, shear strength, and stability of the foundation or fill, and reducing post-construction settlement. Traditional compaction methods mainly rely on manual labor using simple tools such as wooden rammers and stone rammers. This method is not only extremely labor-intensive and inefficient, but also makes it difficult to ensure uniform compaction quality. It heavily depends on the experience and physical strength of the operators and is no longer suitable for the requirements of modern engineering construction in terms of scale, standardization, and efficiency.

[0003] With the improvement of mechanization, various types of compaction equipment have been developed and applied in engineering practice. Among them, small equipment such as vibratory plate compactors and frog rammers have been used to some extent in narrow or backfill areas. However, these types of equipment usually have the disadvantages of limited compaction energy and shallow impact depth, making them difficult to meet the requirements of thick fills or heavy foundations that require high compaction standards. On the other hand, although large road rollers have greater compaction power and operating efficiency, their large size and poor maneuverability make them unsuitable for construction in space-constrained conditions (such as trench backfilling, bridge abutment backfilling, and building edge areas). Moreover, for cohesive soils or mixed soil and stone materials, their compaction effect is sometimes not as good as impact compaction.

[0004] Impact rammers, especially those that utilize the free or forced fall of a hammer to generate impact energy, exhibit unique advantages in the aforementioned fields due to their large impact force and deep impact depth. Some existing electric or internal combustion engine-driven rammers typically use crank-connecting rod or cam mechanisms to convert rotary motion into linear reciprocating motion of the hammer. However, this type of transmission often has a significant limitation: the hammer's stroke and impact frequency are fixed, or can only be adjusted within a very small range. This leads to a contradiction between the equipment's operating parameters and the varying demands of the construction site. For example, the ideal optimal compaction energy and frequency differ for different soil types, moisture contents, layer thicknesses, and compaction requirements. Excessive compaction energy may damage the surface soil or break up aggregates, while insufficient energy will fail to achieve the desired compaction depth; excessively high frequencies may cause the soil to exhibit a "springy" phenomenon (especially in fine-grained soils), while excessively low frequencies will affect construction efficiency. Most existing equipment cannot easily and effectively balance and adjust between energy and frequency, forcing operators to rely on fixed parameters to cope with varying working conditions. This not only affects the final compaction quality but also leads to energy waste or unnecessary equipment wear. Therefore, it is necessary to provide a new ramming device for earthwork construction to solve the above-mentioned technical problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a ramming device for earthwork construction.

[0006] This invention provides a ramming device for earthwork construction, comprising: A frame, comprising a guide frame and a mounting frame, wherein the mounting frame is fixedly provided on one side of the guide frame; The ram is slidably connected to the guide frame; A rotating shaft, which is rotatably connected to a mounting bracket; The transmission mechanism is located between the hammer and the rotating shaft; The drive mechanism is located between the rotating shaft and the mounting bracket.

[0007] Preferably, the hammer has grooves on both the left and right sides, and the guide frame is slidably connected to the grooves.

[0008] Preferably, the transmission mechanism includes a bushing, a first incomplete gear, a second incomplete gear, a third incomplete gear, a rack, and a limiting component. The rack is fixedly connected to the hammer, and the bushing is slidably connected to the rotating shaft. The first incomplete gear, the second incomplete gear, and the third incomplete gear are fixedly connected to the bushing from left to right. A limiting component is provided between the bushing and the rotating shaft.

[0009] Preferably, the first incomplete gear, the second incomplete gear, and the third incomplete gear can all mesh with the rack.

[0010] Preferably, the number of teeth of the first incomplete gear, the second incomplete gear, and the third incomplete gear decreases sequentially.

[0011] Preferably, the limiting component includes a fastening bolt and a plurality of evenly distributed limiting holes on the rotating shaft. The bushing is threaded with a fastening bolt, and one end of the fastening bolt is inserted into one of the limiting holes.

[0012] Preferably, the drive mechanism includes a geared motor, a drive sprocket, a driven sprocket, and a chain. The geared motor is fixedly mounted on the mounting bracket. The drive sprocket is fixedly connected to the output shaft of the geared motor. The driven sprocket is fixedly connected to the rotating shaft. A chain is provided between the drive sprocket and the driven sprocket.

[0013] Preferably, the bottom of the frame is fixedly provided with wheels.

[0014] Preferably, a handle is fixedly connected to the mounting bracket.

[0015] Compared with related technologies, the earth-ramming device for earthwork construction provided by this invention has the following beneficial effects: This invention provides a ramming device for earthwork construction, achieving adjustable and adaptable ramming parameters. By setting multiple incomplete gears with different numbers of teeth, as well as axially sliding bushings and limiting components, the operator can quickly select the incomplete gear meshing with the rack according to the specific conditions of the construction site. When a gear with more teeth is selected, the hammer lifting stroke is large, and the potential energy obtained is high, thus producing a heavy ramming effect with high ramming energy, suitable for deep soils that are difficult to compact or require high bearing capacity. When a gear with fewer teeth is selected, the hammer lifting stroke is small, and the falling frequency is fast, realizing a high-frequency, low-energy ramming mode, suitable for surface compaction or conditions that prevent aggregate breakage. This flexible adjustment capability allows a single device to adapt to various operational needs, from coarse-grained soil to fine-grained soil, and from deep fill to shallow compaction, significantly improving the device's versatility and adaptability to different working conditions.

[0016] Secondly, the device is characterized by its ease of operation and high efficiency in adjustment. The adjustment mechanism of the transmission system is designed to be simple and reliable, requiring only the tightening or loosening of a single bolt and the movement of the bushing to switch between different working modes. The entire process requires no special tools or complex disassembly and assembly of the equipment and can be completed quickly on-site. This convenient adjustment method significantly reduces the time required to adjust equipment parameters, which helps improve overall construction efficiency and encourages operators to proactively optimize operating parameters according to changes in working conditions.

[0017] The device's structure ensures the reliability and stability of power transmission. Employing chain drive as the driving mechanism, it can transmit large torques, features a compact structure, and provides accurate transmission ratios. The guide frame and the sliding groove on the hammer cooperate to ensure that the hammer maintains a stable vertical movement trajectory during repeated impacts, preventing uneven wear and jamming, thus extending the equipment's service life and operational smoothness. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the rammed earth device for earthwork construction provided by the present invention. Figure 2 This is a schematic diagram of the hammer structure provided by the present invention; Figure 3 This is a partial structural diagram of the transmission mechanism provided by the present invention.

[0019] The following are the labels in the diagram: 1. Frame; 2. Guide frame; 3. Mounting frame; 4. Hammer; 5. Rotating shaft; 6. Slide groove; 7. Bushing; 8. First incomplete gear; 9. Second incomplete gear; 10. Third incomplete gear; 11. Rack; 12. Fastening bolt; 13. Limiting hole; 14. Gear motor; 15. Drive sprocket; 16. Driven sprocket; 17. Chain; 18. Wheel; 19. Handle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figures 1-3 ,in, Figure 1 This is a three-dimensional structural diagram of the rammed earth device for earthwork construction provided by the present invention. Figure 2 This is a schematic diagram of the hammer structure provided by the present invention; Figure 3 This is a partial structural diagram of the transmission mechanism provided by the present invention.

[0022] In the specific implementation process, such as Figures 1-3 As shown, a ramming device for earthwork construction includes a frame 1, a ramming hammer 4, a rotating shaft 5, a transmission mechanism, and a drive mechanism. The adjustable transmission mechanism allows for flexible adjustment of the ramming hammer's stroke and frequency to adapt to different ramming construction needs.

[0023] The frame 1 consists of a guide frame 2 and a mounting frame 3. The mounting frame 3 is fixedly installed on one side of the guide frame 2 by welding. The bottom of the frame 1 is equipped with casters 18 for easy movement of the entire device. A handle 19 is also fixedly connected to the mounting frame 3 for easy pushing and operation by the operator.

[0024] The tamping hammer 4 is slidably connected to the guide frame 2 through the sliding grooves 6 on its left and right sides, so that the tamping hammer 4 can move up and down along the guide frame 2 to achieve the tamping effect on the soil and rocks.

[0025] The rotating shaft 5 is rotatably supported on the mounting bracket 3 by bearings. A transmission mechanism is provided between the tamping hammer 4 and the rotating shaft 5 to convert the rotational motion of the rotating shaft 5 into the linear reciprocating motion of the tamping hammer 4.

[0026] Specifically, the transmission mechanism includes a bushing 7, a first incomplete gear 8, a second incomplete gear 9, a third incomplete gear 10, a rack 11, and a limiting assembly. The rack 11 is fixedly connected to the side of the hammer 4. The bushing 7 is fitted onto the rotating shaft 5 via a keyway or other sliding method and can slide along the axial direction of the rotating shaft 5. The first incomplete gear 8, the second incomplete gear 9, and the third incomplete gear 10 are fixedly mounted on the bushing 7 from left to right. The number of teeth on these three incomplete gears is different, and the number of teeth decreases sequentially, with the first incomplete gear 8 having the most teeth and the third incomplete gear 10 having the fewest teeth. Each incomplete gear can mesh with the rack 11 as needed.

[0027] The limiting assembly is used to lock the bushing 7 at a specific position on the rotating shaft 5. The limiting assembly includes a fastening bolt 12 and a plurality of evenly distributed limiting holes 13 on the rotating shaft 5. The bushing 7 is provided with a threaded hole, into which the fastening bolt 12 is screwed, and its end can be inserted into any of the limiting holes 13, thereby preventing relative rotation and axial movement between the bushing 7 and the rotating shaft 5. By loosening the fastening bolt 12, sliding the bushing 7 to the desired position, and then tightening the bolt to insert it into the corresponding limiting hole 13, one of the first incomplete gear 8, the second incomplete gear 9, or the third incomplete gear 10 can be selected to mesh with the rack 11.

[0028] The drive mechanism includes a geared motor 14, a drive sprocket 15, a driven sprocket 16, and a chain 17. The geared motor 14 is bolted to the mounting bracket 3. The drive sprocket 15 is fixedly mounted on the output shaft of the geared motor 14. The driven sprocket 16 is fixedly mounted on the rotating shaft 5. The chain 17 is sleeved on the drive sprocket 15 and the driven sprocket 16, thereby transmitting the power of the geared motor 14 to the rotating shaft 5.

[0029] The working process of the ramming device is as follows: The reduction motor 14 is started, driving the rotating shaft 5 to rotate at a constant speed via chain drive. The rotating shaft 5 drives the bushing 7 and the selected incomplete gear (e.g., the first incomplete gear 8) to rotate together. When the toothed part of the incomplete gear meshes with the rack 11 on the ramming hammer 4, it drives the ramming hammer 4 to rise upwards. When the toothless part of the incomplete gear rotates to the position of the rack 11, the meshing disengages, and the ramming hammer 4 accelerates downwards along the guide frame 2 under the action of gravity, impacting the ground and completing one ramming cycle. Because the incomplete gear rotates continuously, the above process is repeated cyclically, achieving continuous ramming.

[0030] By selecting incomplete gears with different numbers of teeth to mesh with rack 11, the lifting height and impact frequency of the tamping hammer 4 can be changed. Incomplete gears with more teeth (such as the first incomplete gear 8) have a longer engagement time with rack 11, resulting in a larger lifting stroke and higher impact energy, but a lower frequency. Incomplete gears with fewer teeth (such as the third incomplete gear 10) have a shorter engagement time, a smaller lifting stroke, and lower impact energy, but a higher frequency. Operators can easily and quickly adjust the transmission ratio according to actual construction needs to obtain the best compaction effect.

[0031] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A ramming device for earthwork construction, characterized in that, include: The frame (1) includes a guide frame (2) and a mounting frame (3), wherein the mounting frame (3) is fixedly provided on one side of the guide frame (2); The ram (4) is slidably connected to the guide frame (2); A rotating shaft (5) is rotatably connected to a mounting bracket (3); The transmission mechanism is located between the hammer (4) and the rotating shaft (5); The drive mechanism is located between the rotating shaft (5) and the mounting bracket (3).

2. The ramming device for earthwork construction according to claim 1, characterized in that: The hammer (4) has grooves (6) on both the left and right sides, and the guide frame (2) is slidably connected to the grooves (6).

3. The ramming device for earthwork construction according to claim 1, characterized in that: The transmission mechanism includes a bushing (7), a first incomplete gear (8), a second incomplete gear (9), a third incomplete gear (10), a rack (11), and a limiting component. The rack (11) is fixedly connected to the hammer (4), and the bushing (7) is slidably connected to the rotating shaft (5). The first incomplete gear (8), the second incomplete gear (9), and the third incomplete gear (10) are fixedly connected to the bushing (7) from left to right. A limiting component is provided between the bushing (7) and the rotating shaft (5).

4. A ramming device for earthwork construction according to claim 3, characterized in that: The first incomplete gear (8), the second incomplete gear (9) and the third incomplete gear (10) can each mesh with the rack (11).

5. A ramming device for earthwork construction according to claim 4, characterized in that: The number of teeth of the first incomplete gear (8), the second incomplete gear (9), and the third incomplete gear (10) decreases sequentially.

6. A ramming device for earthwork construction according to claim 3, characterized in that: The limiting component includes a fastening bolt (12) and several evenly distributed limiting holes (13) on the rotating shaft (5). The bushing (7) is threaded with a fastening bolt (12), and one end of the fastening bolt (12) is inserted into one of the limiting holes (13).

7. A ramming device for earthwork construction according to claim 1, characterized in that: The drive mechanism includes a geared motor (14), a drive sprocket (15), a driven sprocket (16), and a chain (17). The geared motor (14) is fixedly mounted on the mounting bracket (3). The drive sprocket (15) is fixedly connected to the output shaft of the geared motor (14). The driven sprocket (16) is fixedly connected to the rotating shaft (5). A chain (17) is provided between the drive sprocket (15) and the driven sprocket (16).

8. A ramming device for earthwork construction according to claim 1, characterized in that: The frame (1) is fixedly equipped with a walking wheel (18) at the bottom.

9. A ramming device for earthwork construction according to claim 1, characterized in that: A handle (19) is fixedly connected to the mounting bracket (3).

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