Waist discharging vibroflot equipment with pile casing

Abstract

The waist discharging vibroflot equipment comprises a vibroflot, a shock absorber, a material pipe, a hopper, the protective cylinder, a hoop and a lower clamping ring, the shock absorber is arranged at the top of the vibroflot, the top of the shock absorber is connected with the material pipe, the hopper is arranged at the top of the material pipe, the protective cylinder, the hoop and the lower clamping ring are sequentially arranged on the outer side of the material pipe in a sleeved mode, and an embedded ring is arranged at the bottom of the protective cylinder. The hoop comprises two splicing components which are fixedly connected through a connecting plate and a threaded hole, an embedded part is arranged at the bottom of the hoop and inserted into the pile casing, a lower sleeve is arranged in the lower clamping ring and embedded into the pile casing, and an upper rubber sleeve is further arranged in the pile casing. According to the equipment, rapid separation and connection of the pile casing and the material pipe can be achieved, the problem that a guide rod is tightly held due to collapse of loose surface soil is avoided, the pile casing can statically support the hole wall in the shallow layer stage of a pile hole and is synchronously lifted up along with the material pipe in the densification stage, and segmented densification and improvement of the overall pile forming efficiency are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of foundation treatment construction equipment, specifically relating to a waist-discharge vibratory compactor with a protective casing. Background Technology

[0002] Vibro-compaction is a common foundation treatment method used for soft soil foundations such as sand, silt, clay, and artificial fill. Its basic principle is to create holes in the foundation using a vibro-compactor, and then compact the sand or gravel within the holes through vibration, thereby increasing the bearing capacity of the foundation. In recent years, some equipment has adopted a waist-discharge structure to bring the fill material closer to the vibration zone, improving compaction efficiency and avoiding problems such as difficult settlement and uneven pile formation associated with bottom-discharge methods.

[0003] However, in actual construction, especially when the surface soil is relatively loose, the vibratory compactor is prone to failure to form a hole in the early stages due to hole wall collapse. As the hole continues to be drilled downwards, the loose soil layer will wrap around the guide rod. With the increase in hole depth, the vertical frictional resistance between the soil and the guide rod will continuously increase, seriously affecting the sinking capacity of the vibratory compactor, and even resulting in no progress. Such problems not only affect the construction efficiency of the equipment, but also cause pile failure.

[0004] To address the aforementioned problems, existing technologies often employ rotary drilling rigs to pre-drill pilot holes of a certain depth, installing casings within these holes to prevent borehole collapse. Vibratory compactors are then used to excavate and densify the deeper soil layers below the casing. After completion, the vibratory compactor is removed, and the casing is pulled from the pilot hole using a pipe-pulling device. Finally, the shallow soil layer originally covered by the casing is treated again using a vibratory compactor. While this method alleviates the problem of shallow borehole collapse to some extent, it requires multiple machines operating in tandem, consuming significant construction resources and personnel, and is characterized by a complex, costly, and inefficient process. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a waist-discharge vibratory compactor with a protective casing, which can effectively support the hole wall and flexibly carry out vibratory compaction operations, thereby solving the problems of difficulty in drilling holes in shallow soil, complex equipment coordination, and low efficiency of protective casing in the prior art, and improving the safety and economy of foundation treatment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A vibratory impactor with a protective sleeve for discharging material at the waist includes a vibratory impactor, a shock absorber is provided on the top of the vibratory impactor, and a material pipe is connected to the top of the shock absorber. A hopper is connected to the top of the material pipe.

[0008] The material tube is fitted with a protective sleeve, a clamp, and a lower retaining ring;

[0009] The clamp and lower retaining ring are located at the top and bottom of the casing, respectively.

[0010] Furthermore, an embedded ring is provided at the bottom of the protective sleeve;

[0011] The lower retaining ring has a lower sleeve inside;

[0012] The embedded ring is inserted into the lower retaining ring.

[0013] Furthermore, the number of clamps is set to two, and the two clamps can be spliced ​​together to form a ring;

[0014] The outer side of the clamp has a threaded hole.

[0015] Furthermore, both ends of the clamp are fixedly connected to connecting plates, and the sides of the connecting plates are provided with connecting holes.

[0016] Furthermore, an upper rubber sleeve is provided inside the protective sleeve;

[0017] The bottom of the clamp is provided with an insert, which is inserted into the protective sleeve.

[0018] Furthermore, the top of the shock absorber is provided with a truncated cone, and the top of the shock absorber is provided with connecting columns at equal intervals around its central axis.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention provides a better vibration isolation capability for the entire vibratory compaction system by installing a shock absorber on the top of the vibratory compactor, connecting the top of the shock absorber to a material pipe, and installing a hopper on the top of the material pipe. This effectively reduces the impact of high-frequency vibrations generated during the operation of the vibratory compactor on the upper structure, improves the operational stability of the equipment, extends the service life of the equipment, and ensures a smooth feeding process, thereby improving construction efficiency.

[0021] By installing a protective casing, clamps, and a lower retaining ring outside the material pipe, the protective casing is used to support the loose surface soil and prevent the borehole wall from collapsing during the vibratory compactor drilling process. This avoids the problem of soil collapse wrapping around the material pipe, making it difficult to lift the equipment. The lower retaining ring is fixed by fitting with the embedded ring at the bottom of the protective casing through the lower sleeve. This allows the protective casing to sink together with the material pipe in the early stage of drilling, and then remain stationary in place after reaching the shallow soil depth. This effectively solves the problems of guide rod clamping and obstructed advance caused by loose soil in shallow foundations.

[0022] The clamp structure consists of two symmetrical semi-rings spliced ​​together. Threaded holes are provided on the outer side of the clamp, which are matched with connecting plates and connecting holes for easy installation or removal. At the beginning of construction, the casing sinks along with the guide rod under the push of the clamp. After reaching a certain depth, the clamp is removed, and the casing will remain in its original position and no longer sink with the guide rod. When the vibratory compactor completes the construction of the lower stratum and is lifted to the casing position, the clamp is moved down and the upper end of the casing is re-fixed. The lifting action of the material pipe drives the casing to be lifted synchronously. This solves the problem of traditional construction requiring separate lifting equipment to extract the casing, which is complex and costly. It achieves segmented densification between the casing section and the lower section, improving the uniformity of pile formation and the continuity of foundation reinforcement.

[0023] An upper rubber sleeve is installed inside the casing, and an insert is provided at the bottom of the clamp to be inserted into the casing, which enhances the connection stability between the clamp and the casing, making the casing less likely to fall off during the lifting process, and further ensuring the safety and accuracy of the lifting action; this structure improves the subsequent densification effect of shallow soil layers, and improves the overall pile quality and construction safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model after the protective sleeve is removed;

[0026] Figure 3 This is a schematic diagram of the structure of the clamp of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the protective sleeve of this utility model. Figure 1 ;

[0028] Figure 5 This is a schematic diagram of the structure of the protective sleeve of this utility model. Figure 2 ;

[0029] Figure 6 This is a schematic diagram of the lower retaining ring of this utility model;

[0030] Figure 7 This is a schematic diagram illustrating the use of this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Vibratory impactor;

[0033] 2. Shock absorber; 21. Frustum; 22. Connecting column;

[0034] 3. Material pipe; 4. Hopper;

[0035] 5. Casing; 51. Upper rubber sleeve; 52. Embedded ring; 6. Clamp; 61. Threaded hole; 62. Connecting plate; 621. Connecting hole; 63. Embedded part;

[0036] 7. Lower the clasp; 71. Lower the loop. Detailed Implementation

[0037] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0038] See Figure 1-7 A vibratory compactor with a protective casing and a waist-mounted discharge outlet includes a vibratory compactor 1, a shock absorber 2 mounted on the top of the vibratory compactor 1, a material pipe 3 connected to the top of the shock absorber 2, and a hopper 4 connected to the top of the material pipe 3. The vibratory compactor 1 is used to vibrate and densify the foundation soil during construction. The shock absorber 2 absorbs the high-frequency vibrations generated by the vibratory compactor 1 during operation, preventing them from being directly transmitted to the upper structure, thus providing buffering and protection. The material pipe 3 conveys the reinforcing material to the waist-mounted discharge outlet of the vibratory compactor 1, achieving the mixing of filling material and reinforcement. The process is carried out synchronously; the hopper 4 is set at the top of the material pipe 3 to facilitate the feeding of materials into the material pipe 3 and ensure continuous construction; the material pipe 3 is fitted with a casing 5, a clamp 6 and a lower clamping ring 7; the casing 5 is used to support the hole wall when passing through loose surface soil to prevent the hole wall from collapsing and causing the guide rod to lock up; the clamp 6 and the lower clamping ring 7 are located at the top and bottom of the casing 5 respectively. Through the connection with the casing 5, the casing 5 can be controlled to detach and be extracted during the construction process, ensuring the independence of different densification stages and the continuity of the construction rhythm.

[0039] See Figure 1-4 The bottom of the casing 5 is provided with an embedded ring 52; the embedded ring 52 is used to stably insert the casing 5 into the lower retaining ring 7, realizing the positioning and fixing function between the casing 5 and the lower retaining ring 7, and preventing the casing 5 from axial displacement during construction; the lower retaining ring 7 is provided with a lower sleeve 71 inside; the lower sleeve 71 is made of elastic rubber, which can elastically wrap the embedded ring 52, thereby reducing the rigid contact between the casing 5 and the lower retaining ring 7, and improving the overall impact resistance and sealing performance of the construction equipment; the embedded ring 52 is inserted into the lower retaining ring 7 to form a fitting structure, providing good support conditions for the casing 5 in shallow soil layers.

[0040] See Figure 1-3The number of clamps 6 is set to two, and the two clamps 6 can be spliced ​​into a ring; the clamps 6 are symmetrically arranged, and by closing the outer periphery of the casing 5 into a ring, the upper end of the casing 5 is circumferentially clamped and fixed; the outer side of the clamps 6 is provided with threaded holes 61; the threaded holes 61 are used to install bolts, so that the two clamps 6 can be spliced ​​by threaded fastening, ensuring that the clamps 6 form a stable closed state on the outer side of the casing 5, which facilitates operation when the casing 5 needs to be installed or removed, and improves the adaptability and assembly efficiency of the equipment in on-site construction.

[0041] See Figure 1-3 Both ends of the clamp 6 are fixedly connected to connecting plates 62, and connecting holes 621 are opened through the side of the connecting plates 62. The connecting plates 62 are rigid reinforcing members used to connect the two clamps 6. They are made of high-strength materials with excellent resistance to deformation. Connecting screws can be inserted into the connecting holes 621, and the two clamps 6 are reliably connected by locking, thus forming a stable ring structure. This structure enables the clamps 6 to maintain minimal deformation under stress, enhancing the overall stability of the casing 5 and the material tube 3 in the connected state. It is particularly suitable for the tensile requirements during the casing lifting stage.

[0042] See Figure 1-4 The casing 5 has an upper rubber sleeve 51 inside. The upper rubber sleeve 51 is an elastic material component with an inner diameter slightly smaller than the outer diameter of the material pipe 3. It is installed on the inner wall of the casing 5 and wraps around the outer wall of the material pipe 3 through elastic contact. During construction, when the casing 5 and the material pipe 3 slide relative to each other, it can provide damping and shock absorption and sealing effects. The bottom of the clamp 6 is provided with an insert 63, which is inserted into the casing 5. The insert 63 and the upper rubber sleeve 51 form a mating connection. When the clamp 6 is connected to the casing 5, the insert 63 is inserted into the opening section of the casing 5, which further improves the positioning stability of the clamp 6. When it is subjected to downward pressure, it can reliably sink the casing 5 into the soil layer. When it is subjected to upward lifting force, it can reliably bring the casing 5 out, ensuring that the soil layer covered by the casing 5 is successfully densified after lifting.

[0043] See Figure 1 The top of the shock absorber 2 is provided with a truncated cone 21, and the top of the shock absorber 2 is provided with connecting columns 22 at equal intervals around its central axis. The truncated cone 21 has a structure that is smaller at the top and larger at the bottom. Its upper surface is used to receive the stone material leaking from the material pipe and guide the stone material to be evenly dispersed in the surrounding air, so as to avoid the accumulation and blockage of the granular material. The connecting columns 22 are evenly distributed and connected to the material pipe 3 by bolt fixing, so that the material pipe 3 has good axial stability during the vibratory compaction process, preventing loosening and shaking caused by vibration, and improving the construction accuracy of the vibratory compaction operation and the overall coordination performance of the equipment.

[0044] The working principle of this utility model is as follows:

[0045] Before starting pile driving, clamp 6 is clamped onto material pipe 3, and the casing 5 is fixed onto material pipe 3 by the cooperation of clamp 6 and lower clamping ring 7, so that casing 5 and material pipe 3 become one.

[0046] When the pile hole is deepened to a certain depth, the upper end of the casing 5 descends to near the ground, at which point the clamp 6 is removed;

[0047] The casing 5 is stationary in the shallow soil layer. There is an annular gap between the casing 5 and the material pipe 3. Therefore, the vibratory compactor 1 vibrates and continues to drill downwards, while the casing 5 does not vibrate and does not move downwards with the material pipe 3. It remains in the original soil layer, which plays the role of protecting the hole wall and preventing the loose soil from collapsing and grabbing the material pipe 3.

[0048] After drilling to the predetermined depth, the pile hole is lifted and densified, starting with the section below the casing 5. The casing 5 is supported by the lower retaining ring 7 of the feed pipe 3, and then the clamp 6 is installed at the upper end of the casing 5. When lifted again, the casing 5 will be pulled out of the ground along with the feed pipe 3, and the soil layer previously protected by the casing 5 will be densified.

[0049] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A vibratory discharge device with a protective sleeve, comprising a vibratory discharge device (1), characterized in that: The top of the vibratory impactor (1) is provided with a shock absorber (2), and the top of the shock absorber (2) is connected to a material pipe (3), and the top of the material pipe (3) is connected to a hopper (4). The material pipe (3) is fitted with a protective sleeve (5), a clamp (6) and a lower retaining ring (7); The clamp (6) and the lower clamp (7) are located at the top and bottom of the casing (5), respectively.

2. The waist-discharge vibratory compactor device with a protective sleeve according to claim 1, characterized in that: The bottom of the protective sleeve (5) is provided with an embedded ring (52); The lower retaining ring (7) is provided with a lower sleeve (71) inside; The embedded ring (52) is inserted into the lower retaining ring (7).

3. The waist-discharge vibratory compactor device with a protective sleeve according to claim 1, characterized in that: The number of clamps (6) is set to two, and the two clamps (6) can be spliced ​​together to form a ring; The outer side of the clamp (6) is provided with a threaded hole (61).

4. The waist-discharge vibratory compactor device with a protective sleeve according to claim 3, characterized in that: Both ends of the clamp (6) are fixedly connected to connecting plates (62), and connecting holes (621) are opened through the side of the connecting plates (62).

5. The waist-discharge vibratory impactor device with a protective sleeve according to claim 1, characterized in that: The inner side of the protective sleeve (5) is provided with an upper rubber sleeve (51); The bottom of the clamp (6) is provided with an insert (63), which is inserted into the sleeve (5).

6. The waist-discharge vibratory impactor device with a protective sleeve according to claim 1, characterized in that: The top of the shock absorber (2) is provided with a truncated cone (21), and the top of the shock absorber (2) is provided with connecting columns (22) at equal intervals around its central axis.

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