Dynamic compaction device
By installing a fly rock protection net and an elastic impact cone structure on the tamping hammer, the problem of flying debris during the tamping process is solved, thereby improving safety and tamping efficiency, and making it easier to clean the tamping hammer cavity.
Patent Information
- Application Number
- CN202423054842.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-11
AI Technical Summary
During the tamping process, existing dynamic tamping machines are prone to splashing of gravel, creating safety hazards, and the tamping hammer's movement trajectory is prone to deviation, and there is a lack of effective protective devices.
A fly rock protection net mechanism is installed on the top of the tamping hammer body, including a ring-shaped fixing rod and a spring net. During the tamping process, it flips to form an inverted umbrella-shaped structure to reduce resistance and unfolds for protection upon impact. An elastic impact cone structure is set at the bottom of the tamping hammer to increase the tamping effect. The tamping hammer is equipped with an exhaust cavity and an exhaust pipe to facilitate the clearing of blockages.
It effectively reduces the destructiveness of flying rocks, maintains the stability of the hammer's descent speed and trajectory, improves tamping efficiency, and facilitates the removal of blockages in the hammer's cavity.
Smart Images
Figure CN223481817U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dynamic compaction technology, and in particular relates to a dynamic compaction device. Background Technology
[0002] Dynamic compaction is a device used in building construction to compact the ground foundation. Currently, the most common type used in construction is the dynamic compaction machine. The main structure of a dynamic compaction machine includes a tall frame, a motor mounted on the frame, wire ropes, a hammer, and a release device for locking and releasing the hammer. During operation, the release device is attached to a bracket on the hammer. As the hammer is lifted to a certain height, the wire rope pulling on the release device's handle gradually tauts, pulling the handle. Driven by the handle, the hook on the release device disengages from the bracket on the hammer. At this point, the heavy hammer, after free-falling from a height, impacts the ground, forming a compaction hole.
[0003] During the compaction process, when the heavy and high-speed edge of the tamping hammer strikes the gravel on the ground, the gravel tends to fly upwards under the high impact. The kinetic energy imparted to the gravel by the hammer is extremely high, and the flying gravel can easily be scattered erratically, creating significant safety hazards. In particular, when these erratically flying gravel strike construction workers or equipment, serious accidents can occur.
[0004] Specifically, due to the complex surface conditions at construction sites, when the bottom edge of the tamping hammer touches the gravel, it generates a tactile force that causes the gravel to easily fly off. Simultaneously, the massive air blast and impact force generated during the hammer's descent are also factors contributing to the flying gravel.
[0005] Currently, the compaction work lacks protective devices. Specifically, during the free fall of the tamping hammer, the air resistance is relatively large. If protective structures such as covers to prevent flying stones are installed, it will not only increase the air resistance and reduce the tamping kinetic energy of the hammer, but also cause the tamping hammer's trajectory to deviate due to the large air resistance of the cover structure. Utility Model Content
[0006] Based on the above background, the purpose of this utility model is to provide a dynamic compaction device.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A dynamic compaction device includes a hammer body, and a rockfall protection net mechanism is installed on the top of the hammer body.
[0009] The rockfall protection net mechanism includes a ring-shaped fixed rod, on which several protective rods are hinged;
[0010] A fan-shaped area is formed between adjacent guard rods, and a spring net is fixedly connected within the fan-shaped area; the spring net includes a number of protective springs with a gradient distribution of length; the protective springs are used to protect against flying stones during the tamping process;
[0011] The bottom of the annular fixing rod is fixedly connected to the top of the hammer body by a column, and the column is distributed between adjacent protective rods.
[0012] Preferably, a bracket is fixedly connected to the top of the ramming hammer body.
[0013] Preferably, the hammer body has several venting structures;
[0014] During the compaction process underground, air is released through the ventilation structure.
[0015] Preferably, the exhaust structure includes several exhaust cavities formed on the hammer body;
[0016] An exhaust pipe is provided inside the exhaust passage cavity, and the exhaust pipe is slidably connected to the exhaust passage cavity.
[0017] The bottom of the exhaust pipe is positioned by a lower positioning structure, and the top of the exhaust pipe is positioned by an upper positioning structure.
[0018] Preferably, the lower positioning structure includes a nut groove formed at the bottom of the hammer body; the bottom of the venting cavity is located at the top of the nut groove.
[0019] The bottom of the exhaust pipe is threaded with a lower nut, which mates with a nut groove, and the bottom of the lower nut is flush with the bottom of the nut groove.
[0020] Preferably, the top of the exhaust pipe protrudes beyond the top of the exhaust passage cavity;
[0021] The upper positioning structure includes an upper nut with a threaded connection to the top of the exhaust pipe.
[0022] Preferably, an elastic impact cone structure is assembled and connected at the bottom center of the hammer body.
[0023] Preferably, an inner recessed groove is formed at the center of the bottom of the hammer body;
[0024] The elastic impact cone structure includes an impact cone that is limited and slides within the inner sinker.
[0025] The cone tip is positioned downwards, and the top of the cone is slidably mounted on the hammer body via several spring components.
[0026] Preferably, the spring element includes a slide rod slidably connected to the hammer body, the bottom of which is fixedly connected to the top of the impact cone;
[0027] A reinforcing spring is fitted onto the slide rod, and the two ends of the reinforcing spring are fixedly connected to the top of the impact cone and the top of the inner sinking groove, respectively.
[0028] This utility model has the following beneficial effects:
[0029] 1. During the descent of the rammer, the mesh structure of the spring net results in very low air resistance, which does not affect the descent speed or trajectory of the rammer. Simultaneously, due to the free acceleration of the rammer, all the protective rods and their connected protective springs will, under the influence of inertia, rotate upwards appropriately (rotating around the ring-shaped fixed rod as a fulcrum), forming a structure similar to an inverted umbrella, further reducing resistance.
[0030] When the hammer strikes the ground, the rock-flying net mechanism flips downwards and opens due to inertia. In the unfolded state, it forms a spring net cover. The flying rocks generated by the impact hit the spring net structure, and the kinetic energy of the flying rocks is successfully reduced under the protection of the spring net, thus greatly reducing the destructiveness of the flying rocks.
[0031] 2. Positioning is achieved using the upper and lower nuts. If the exhaust pipe becomes blocked, the upper and lower nuts can be loosened, causing the exhaust pipe to detach from the exhaust cavity, thus facilitating the removal of blockages. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the dispersed structure in an embodiment of the present utility model;
[0034] Figure 2 This is a schematic diagram of the structure of the rock-flying net mechanism in an embodiment of this utility model;
[0035] Figure 3 This is a schematic diagram of the elastic impact cone structure in an embodiment of the present invention;
[0036] Figure 4 This is a schematic diagram of the structure of the lower nut in the nut groove in an embodiment of this utility model;
[0037] Figure 5 This is a schematic diagram of the exhaust cavity in an embodiment of the present invention;
[0038] Figure 6 This is a schematic diagram of the overall structure in an embodiment of the present utility model.
[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0043] Example 1
[0044] like Figure 1-6 As shown, a dynamic compaction device includes a hammer body 1, which has the same structure as the existing hammer body 1. A hanging seat 11 is fixedly connected to the top of the hammer body 1. During operation, the hanging seat cooperates with the release device on the heavy compaction hammer to realize that the hook on the release device is pulled and hung on the bottom of the hanging seat 11. During the release process, the hook on the release device flips and disengages from the bottom of the hanging seat 11.
[0045] In order to prevent flying rocks from harming people and equipment and causing safety accidents during the tamping process, a flying rock protection net mechanism 2 is installed on the top of the tamping hammer body 1.
[0046] Specifically, the rockfall protection net mechanism 2 includes a ring-shaped fixed rod 21, on which several protective rods 22 are hinged. The protective rods 22 are arranged in a ring array, thus forming a fan-shaped area between adjacent protective rods 22.
[0047] A spring mesh is fixedly connected within the fan-shaped area; the spring mesh includes several protective springs 23 with a gradient distribution of length. The protective springs 23 are used to protect against flying stones during the tamping process.
[0048] Meanwhile, the bottom of the annular fixing rod 21 is fixedly connected to the top of the hammer body 1 by a column, and the column is distributed between adjacent protective rods 22.
[0049] The above structure ensures that during the descent of the ram, the air resistance is very small due to the mesh structure of the spring net, which does not affect the descent speed or trajectory of the ram. At the same time, due to the free acceleration of the ram, under the action of inertia, all the protective rods 22 and their connected protective springs 23 will rotate upward appropriately (rotating with the annular fixed rod 21 as the fulcrum) to form a structure similar to an inverted umbrella, thereby further reducing resistance.
[0050] When the hammer strikes the ground, the flying stone protection net mechanism 2 flips downwards and opens due to inertia. In the unfolded state, it forms a spring net cover. The flying stones generated by the impact hit the spring net structure, and the kinetic energy of the flying stones is successfully reduced under the protection of the spring net, thus greatly reducing the destructiveness of the flying stones.
[0051] Example 2
[0052] like Figure 1-6 As shown, in this embodiment, based on the structure of Embodiment 1, the ramming hammer body 1 has several venting structures. These venting structures allow for air release during the ramming hammer's impact on the ground to create a dent.
[0053] Specifically, the venting structure includes several venting cavities 411 opened on the hammer body 1. In actual operation, the venting cavities 411 are often filled with soil, which is difficult to clean after being filled. Specifically, the hammer itself has a certain height, and the heavy tamping causes the soil to be filled very tightly, making it difficult to clean later.
[0054] Therefore, an exhaust pipe 41 is provided inside the exhaust passage cavity 411, and the exhaust pipe 41 is slidably connected to the exhaust passage cavity 411; the bottom of the exhaust pipe 41 is positioned by a lower positioning structure, and the top of the exhaust pipe 41 is positioned by an upper positioning structure.
[0055] The lower positioning structure includes a nut groove located at the bottom of the ramming hammer body 1; the bottom of the vent cavity 411 is located at the top of the nut groove; a lower nut 42 is threadedly connected to the bottom of the vent pipe 41, the lower nut 42 mates with the nut groove, and the bottom of the lower nut 42 is flush with the bottom of the nut groove. The top of the vent pipe 41 protrudes from the top of the vent cavity 411; the upper positioning structure includes an upper nut 412 threadedly connected to the top of the vent pipe 41.
[0056] In the above manner, positioning is achieved through the upper nut 412 and the lower nut 42. Subsequently, if the exhaust pipe 41 becomes blocked, the upper nut and the lower nut 42 are loosened. At this time, the exhaust pipe 41 is disengaged from the exhaust passage 411, which facilitates the removal of the blockage mud from the exhaust pipe 41.
[0057] Example 3
[0058] like Figure 1-6 As shown, in this embodiment, based on the structure of Embodiment 2, in order to increase the compaction depth and improve the compaction effect (such as the depth of the ramming pit) during the tamping process, an elastic impact cone structure is assembled and connected to the bottom center of the tamping hammer body 1. An inner recess A is formed at the bottom center of the tamping hammer body 1.
[0059] The elastic impact cone structure includes an impact cone 31 that slides within the inner sinking trough A; the height of the impact cone 31 is greater than the height of the inner sinking trough A, and the impact cone 31 is conical in shape, with the radius of its top surface equal to the radius of the cylindrical inner sinking trough A.
[0060] The cone tip of the aforementioned impact cone 31 is positioned downwards, and the top of the impact cone 31 is slidably mounted on the hammer body 1 via several spring members. Each spring member includes a sliding rod (with a suitable sliding rod cavity) slidably connected to the hammer body 1, the bottom of which is fixedly connected to the top of the impact cone 31; a reinforcing spring 33 is sleeved on the sliding rod 32, and both ends of the reinforcing spring 33 are fixedly connected to the top of the impact cone 31 and the top of the inner settling groove A, respectively.
[0061] During the compaction process, the impact cone 31, protruding from the bottom of the hammer body 1, strikes the ground first. In this manner, the impact cone 31 enhances the compaction effect, such as breaking up hard materials like rocks in the soil. During this process, the impact cone 31 retracts into the inner settling trough A at the moment of impact, while the sliding rod 32 retracts into the sliding rod cavity. Even after the reinforcing spring 33 is compressed to its minimum length, the sharp part of the impact cone 31 remains outside the inner settling trough A.
[0062] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A dynamic compaction device, characterized in that, Includes a tamping hammer body, the top of which is equipped with a flying rock protection net mechanism; The rockfall protection net mechanism includes a ring-shaped fixed rod, on which several protective rods are hinged; A fan-shaped area is formed between adjacent guard rods, and a spring net is fixedly connected within the fan-shaped area; the spring net includes a number of protective springs with a gradient distribution of length; the protective springs are used to protect against flying stones during the tamping process; The bottom of the annular fixing rod is fixedly connected to the top of the hammer body by a column, and the column is distributed between adjacent protective rods.
2. The dynamic compaction device according to claim 1, characterized in that, A bracket is fixedly connected to the top of the ramming hammer body.
3. The dynamic compaction device according to claim 1, characterized in that, The hammer body has several exhaust structures; During the compaction process underground, air is released through the ventilation structure.
4. The dynamic compaction device according to claim 3, characterized in that, The exhaust structure includes several exhaust cavities opened on the hammer body; An exhaust pipe is provided inside the exhaust passage cavity, and the exhaust pipe is slidably connected to the exhaust passage cavity. The bottom of the exhaust pipe is positioned by a lower positioning structure, and the top of the exhaust pipe is positioned by an upper positioning structure.
5. The dynamic compaction device according to claim 4, characterized in that, The lower positioning structure includes a nut groove formed at the bottom of the hammer body; the bottom of the venting cavity is located at the top of the nut groove. The bottom of the exhaust pipe is threaded with a lower nut, which mates with a nut groove, and the bottom of the lower nut is flush with the bottom of the nut groove.
6. The dynamic compaction device according to claim 4, characterized in that, The top of the exhaust pipe protrudes from the top of the exhaust passage cavity; The upper positioning structure includes an upper nut with a threaded connection to the top of the exhaust pipe.
7. The dynamic compaction device according to claim 1, characterized in that, An elastic impact cone structure is assembled and connected at the bottom center of the hammer body.
8. The dynamic compaction device according to claim 7, characterized in that, An inner recessed groove is provided at the center of the bottom of the hammer body; The elastic impact cone structure includes an impact cone that is limited and slides within the inner sinker. The cone tip is positioned downwards, and the top of the cone is slidably mounted on the hammer body via several spring components.
9. The dynamic compaction device according to claim 8, characterized in that, The spring component includes a slide rod slidably connected to the hammer body, the bottom of which is fixedly connected to the top of the impact cone; A reinforcing spring is fitted onto the slide rod, and the two ends of the reinforcing spring are fixedly connected to the top of the impact cone and the top of the inner sinking groove, respectively.