Noise-reduction soil unloading device for rotary excavating pile

Abstract

The utility model relates to the technical field of building equipment, in particular to a noise-reduction soil unloading device for a rotary excavating pile. The noise-reduction soil unloading device for the rotary excavating pile specifically comprises stirrups, a plurality of vertical rods and tie bars, the vertical rods are anchored into a soil layer to form a circle, the stirrups bind the vertical rods in a spiral mode, one ends of the tie bars are fixedly connected with the vertical rods, and the other ends of the tie bars are anchored into the soil layer. A plurality of soil scraping pieces are arranged on the vertical rod and distributed in the axial direction of the vertical rod in a staggered mode, and the stirrups are located below the soil scraping pieces. The soil unloading device has the advantages that noise cannot be generated during soil unloading, and the surrounding environment cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and in particular to a noise reduction and soil unloading device for rotary drilling piles. Background Technology

[0002] When using a rotary drilling rig to form a bored pile, the main drilling process is as follows: the drill rod of the rotary drilling rig drives the drill barrel to drill into the pile hole. Various types of soil, such as sand and gravel, are continuously drilled into the drill barrel from the pile hole. After the rotary drilling reaches a certain depth, the drill barrel is lifted, and the rotary drilling rig turntable is rotated to drive the drill rod and drill barrel to rotate at a certain angle. The soil in the drill barrel is then unloaded onto the ground near the pile hole. The drill barrel is then rotated back into the pile hole, and the drill rod and drill barrel are then extended into the pile hole to continue the next step of drilling.

[0003] Rotary drilling rigs remove soil by rotating the drill bit on a rotary table. The rotation of the drill bit causes it to contact a limiting device on the drill rod, generating vibrations that dislodge the cuttings (rock) and soil inside the drill bit. Currently, there are four types of rotary drilling rigs on the market, all of which require extremely strong force to contact the drill rod to generate vibrations that remove the cuttings (rock) and soil. These methods produce a lot of noise during construction, significantly impacting the surrounding environment.

[0004] Because many projects are located in the city center with dense residential buildings nearby, and the pile foundations of the proposed buildings are 800-1200mm cast-in-place piles, the double-bottom double-opening drill bits used at the start of the project generated a lot of noise, leading to constant complaints from residents and seriously affecting the project's construction progress.

[0005] Therefore, a noise reduction and soil unloading device for rotary drilling piles is provided to address the shortcomings of existing technologies. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a noise reduction and soil unloading device for rotary drilling piles, which aims to solve the problem of a large amount of noise generated when the drill bit throws the pile head to unload soil during rotary drilling of cast-in-place piles.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A noise reduction and soil unloading device for rotary drilling piles includes: stirrups, several uprights, and tie bars;

[0009] After several of the uprights are anchored into the soil, they are arranged in a circle. The stirrups are spirally tied to several of the uprights. One end of the tie bar is fixedly connected to the upright, and the other end is anchored into the soil.

[0010] The upright is provided with a plurality of soil scraping blades, which are staggered along the axial direction of the upright, and the stirrups are located below the soil scraping blades.

[0011] As a further improvement to the technical solution of this utility model, the scraper blade and the upright have an angle of 30°-60°.

[0012] As a further improvement to the technical solution of this utility model, the depth of the pole anchored into the soil layer is greater than 300mm.

[0013] As a further improvement to the technical solution of this utility model, the diameter D of the circle is 500mm-700mm.

[0014] As a further improvement to the technical solution of this utility model, the spacing of the stirrups is ≤300mm and ≤1 / 2D.

[0015] As a further improvement to the technical solution of this utility model, the upper end of the pole is conical.

[0016] As a further improvement to the technical solution of this utility model, the upright is a Φ48 steel perforated pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides a rotary drilling pile noise reduction and soil unloading device. Several uprights are inserted into the soil layer to form a circle. The uprights are spirally bound with stirrups and held in place by tie rods to prevent collapse during soil unloading. Scraper blades on the uprights assist in soil unloading while also protecting the stirrups. During operation, after the drilling tool extracts rock and soil, the rotary drilling rig moves the drill bit above the unloading device and inserts it into the device to remove the rock and soil, thus solving the noise problem caused by the rotary drilling rig swinging the drill bit. This utility model's rotary drilling pile noise reduction and soil unloading device is characterized by producing no noise during soil unloading and not affecting the surrounding environment. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a structural schematic diagram of the rotary drilling pile noise reduction and soil unloading device of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the vertical pole in the rotary drilling pile noise reduction and soil unloading device of this utility model.

[0022] In the picture:

[0023] 1. Stirrups; 2. Upright poles; 21. Soil scrapers; 3. Tie bars; 4. Soil layers. Detailed Implementation

[0024] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0025] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0026] Reference Figures 1 to 2 A noise reduction and soil unloading device for rotary drilling piles includes stirrups 1, several uprights 2 and tie bars 3;

[0027] In one embodiment, several uprights 2 are anchored into the soil layer 4 and arranged in a circle. The stirrups 1 are spirally tied to the uprights 2. One end of the tie bar 3 is fixedly connected to the uprights 2, and the other end is anchored into the soil layer 4. Several scraper blades 21 are provided on the uprights 2. The scraper blades 21 are staggered along the axial direction of the uprights 2, and the stirrups 1 are located below the scraper blades 21.

[0028] In this system, several uprights 2 are inserted into the soil layer 4 to form a circle. The uprights 2 are spirally bound with hoops 1 and held in place by tie rods 3 to prevent collapse during soil unloading. The scraper blades 21 on the uprights 2 assist in soil unloading while also protecting the hoops 1. During operation, after the drilling tool extracts the soil and rock, the rotary drilling rig moves the drill bit above the unloading device and presses it down to insert into the device, removing the soil and rock inside. This solves the noise problem caused by the rotary drilling rig swinging the drill bit. This novel rotary drilling pile noise reduction unloading device is characterized by not generating noise during soil unloading and not affecting the surrounding environment.

[0029] In one embodiment, to address the issue of a single pole 2 easily tipping over, four poles 2 are arranged in a circle to enhance stability. When encountering hard rock or soil, the pole 2 is more likely to tip over when the drill bit presses down.

[0030] In one embodiment, the scraper blade 21 and the upright 2 are at an angle of 45°.

[0031] In one embodiment, the depth of the pole 2 anchored into the soil layer 4 is greater than 300mm, which makes the whole device stable and has good pull-out resistance, so that the pole 2 will not be pulled up from the ground by the cohesion of the rock and soil inside the drill bit or the device will be knocked down by impact.

[0032] In one embodiment, the diameter D of the circle is 600mm. The spacing of the stirrups 1 is ≤300mm and ≤1 / 2D; excessive spacing will lead to insufficient overall stability.

[0033] In one embodiment, the upper end of the upright 2 is conical to facilitate its insertion into the soil or rock. The upright 2 is a Φ48 steel perforated pipe.

[0034] Other aspects of the rotary drilling pile noise reduction and soil unloading device described in this utility model are referred to in the prior art and will not be repeated here.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A noise reduction and soil unloading device for rotary drilling piles, characterized in that, include: Stirrups, several uprights, and tie rods; After several of the uprights are anchored into the soil, they are arranged in a circle. The stirrups are spirally tied to several of the uprights. One end of the tie bar is fixedly connected to the upright, and the other end is anchored into the soil. The upright is provided with a plurality of soil scraping blades, which are staggered along the axial direction of the upright, and the stirrups are located below the soil scraping blades.

2. The rotary drilling pile noise reduction and soil unloading device according to claim 1, characterized in that, The scraper blade and the upright pole are at an angle of 30°-60°.

3. The rotary drilling pile noise reduction and soil unloading device according to claim 1, characterized in that, The depth to which the pole is anchored into the soil layer is greater than 300 mm.

4. The rotary drilling pile noise reduction and soil unloading device according to claim 1, characterized in that, The diameter D of the circle is 500mm-700mm.

5. The rotary drilling pile noise reduction and soil unloading device according to claim 4, characterized in that, The spacing between the stirrups is ≤300mm and ≤1 / 2D.

6. The rotary drilling pile noise reduction and soil unloading device according to claim 1, characterized in that, The upper end of the pole is conical.

7. The rotary drilling pile noise reduction and soil unloading device according to claim 1, characterized in that, The upright is made of Φ48 steel perforated pipe.

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