A jet grouting pile machine

Abstract

This invention relates to the field of jet grouting pile technology, specifically disclosing a jet grouting pile machine, comprising: a frame; a power head slidably connected to the frame in a vertical direction; a jet grouting drill rod, the upper end of which is connected to the output end of the power head, the jet grouting drill rod having a grout channel, a water channel, and an air channel inside, the lower end of the jet grouting drill rod having a grouting nozzle communicating with the outlet of the grout channel, a water nozzle communicating with the outlet of the water channel, and an air nozzle communicating with the outlet of the air channel, the outer peripheral wall of the jet grouting drill rod having a plurality of blades arranged in a vertical direction; a drill bit detachably connected to the lower end of the jet grouting drill rod; a grouting pump communicating with the inlet of the grout channel; a water pressure pump communicating with the inlet of the water channel; and an air pressure pump communicating with the inlet of the air channel. This jet grouting pile machine of the present invention is suitable for pile driving operations in gravel and pebble strata, and can improve construction efficiency and pile quality.

Description

Technical Field

[0001] This invention relates to the field of jet grouting machine technology, and in particular to a jet grouting machine. Background Technology

[0002] Current jet grouting machines only have a grout nozzle. By thoroughly mixing the grout with the soil, a columnar solidified body of a certain diameter is formed in the soil. This method achieves good construction results in general strata such as plain fill, miscellaneous fill, cohesive soil, and sand. However, when encountering complex strata such as gravel layers, sand and gravel layers, or boulders, it is prone to problems such as drilling failure, difficulty in hole formation, or pile position deviation, resulting in slow construction speed. Due to the influence of large-diameter sand and gravel, high-pressure jet grouting pile formation may experience interruptions, inconsistent drilling rates, and uneven or insufficient forced mixing of the injected grout with the cut soil particles, leading to poor pile quality. Therefore, there is room for further improvement in the construction efficiency and pile quality of jet grouting machines. Summary of the Invention

[0003] The purpose of this invention is to provide a jet grouting pile machine that is suitable for pile driving operations in gravel and pebble strata, and can improve construction efficiency and pile quality.

[0004] To achieve the above objectives, the present invention provides a jet grouting pile machine, comprising: frame; The power head is slidably connected to the frame in the vertical direction; The upper end of the jet grouting drill rod is connected to the output end of the power head. The jet grouting drill rod has a slurry channel, a water channel and an air channel inside. The lower end of the jet grouting drill rod has a slurry nozzle connected to the outlet of the slurry channel, a water nozzle connected to the outlet of the water channel and an air nozzle connected to the outlet of the air channel. The outer peripheral wall of the jet grouting drill rod has multiple blades distributed around it in the vertical direction. The drill bit is detachably connected to the lower end of the jet grouting drill rod; The grouting pump is connected to the inlet of the grout channel; A water pressure pump, connected to the inlet of the water channel; and An air pump is connected to the inlet of the air passage.

[0005] In some embodiments, the frame includes a base, diagonal braces, and uprights. The uprights are located at the front end of the base, the power head is slidably connected to the uprights in the vertical direction, the upper end of the diagonal braces is connected to the upper end of the uprights, and the lower end of the diagonal braces is connected to the rear end of the base.

[0006] In some embodiments, the diagonal brace is a hydraulic rod, the upper end of the diagonal brace is hinged to the upper end of the column, the lower end of the diagonal brace is hinged to the rear end of the base, and the lower end of the column is hinged to the front end of the base.

[0007] In some embodiments, the frame further includes a tracked traveling mechanism disposed below the base.

[0008] In some embodiments, two diagonal braces are provided, and the two diagonal braces are symmetrically distributed along the front-back direction.

[0009] In some embodiments, the blades are perpendicular to the outer peripheral wall of the jet grouting drill rod, and the blades are inclined in the front-to-back direction.

[0010] In some embodiments, the drill bit is conical in shape, and the diameter of the upper end of the drill bit is larger than the diameter of the lower end of the drill bit.

[0011] In some embodiments, the outer peripheral wall of the drill bit has a plurality of blades.

[0012] This invention provides a jet grouting pile machine, which has the following advantages compared with the prior art: The power head is slidably connected to the frame in the vertical direction. The upper end of the jet grouting drill rod is connected to the output end of the power head. The jet grouting drill rod has a grout channel, a water channel, and an air channel. The lower end of the jet grouting drill rod has a grout nozzle connected to the outlet of the grout channel, a water nozzle connected to the outlet of the water channel, and an air nozzle connected to the outlet of the air channel. The outer peripheral wall of the jet grouting drill rod has multiple blades distributed in a vertical direction. The drill bit is detachably connected to the lower end of the jet grouting drill rod. The grouting pump is connected to the inlet of the grout channel, the water pump is connected to the inlet of the water channel, and the air pump is connected to the inlet of the air channel. In this way, high-pressure water is sprayed out through the water nozzle of the jet grouting drill rod to loosen the strata, which is conducive to the drill bit's penetration into the strata and avoids the drill bit getting stuck. It is suitable for pile construction in gravel and pebble strata, which can improve construction efficiency. Furthermore, the combination of the grout nozzle and the air nozzle ensures that the grout is mixed evenly with the strata, which can improve the quality of pile formation. Attached Figure Description

[0013] Figure 1 This is a front view structural schematic diagram of a jet grouting pile machine provided for some embodiments of the present invention.

[0014] Figure 2 This is a top view of a jet grouting pile machine provided in some embodiments of the present invention.

[0015] Figure 3 for Figure 1 A magnified structural diagram of point A in the middle.

[0016] Figure 4 This is an enlarged planar structural diagram of a pile formed by a jet grouting machine construction, provided for some embodiments of the present invention.

[0017] In the diagram: 1. Frame; 11. Base; 12. Diagonal brace; 13. Column; 14. Tracked walking mechanism; 2. Power head; 3. Jet grouting drill rod; 31. Grouting nozzle; 32. Water nozzle; 33. Air nozzle; 34. Blade; 4. Drill bit; 41. Blade; 5. Grouting pump; 6. Water pump; 7. Air pump; 8. Pile body; 81. Mixing section; 82. Jetting section. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0019] It should be understood that in the description of this application, the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. 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. That is, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, unless otherwise stated, "a plurality of" means two or more.

[0020] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figure 1 and Figure 3 As shown, some embodiments of the jet grouting pile machine of the present invention include a frame 1, a power head 2, a jet grouting drill rod 3, a drill bit 4, a grouting pump 5, a water pressure pump 6, and an air pressure pump 7.

[0022] The power head 2 is slidably connected to the frame 1 in the vertical direction. Specifically, the power head 2 is mounted on the frame 1 via a lifting rail, thus enabling the power head 2 to move up and down.

[0023] The upper end of the jet grouting drill rod 3 is connected to the output end of the power head 2. The jet grouting drill rod 3 has a slurry channel, a water channel and an air channel. The lower end of the jet grouting drill rod 3 has a slurry nozzle 31 connected to the outlet of the slurry channel, a water nozzle 32 connected to the outlet of the water channel and an air nozzle 33 connected to the outlet of the air channel. The outer peripheral wall of the jet grouting drill rod 3 has multiple blades 34 distributed around it in the vertical direction.

[0024] The drill bit 4 is detachably connected to the lower end of the jet grouting drill rod 3. For example, the drill bit 4 is threadedly connected to the jet grouting drill rod 3.

[0025] The grouting pump 5 is connected to the inlet of the grout channel. In this way, the grouting pump 5 can pressurize and transport the cement slurry in the cement mixing tank to the grout channel and spray it out from the grout nozzle 31.

[0026] The water pump 6 is connected to the inlet of the water channel. In this way, the water pump 6 can pressurize the water in the municipal pipeline and deliver it to the water channel, and spray water from the nozzle 32.

[0027] The pneumatic pump 7 is connected to the inlet of the air passage. In this way, the pneumatic pump 7 generates high-pressure gas, which is delivered to the air passage and ejected from the jet nozzle 33.

[0028] During construction, the jet grouting drill rod 3 sprays high-pressure water through the water nozzle 32 during drilling to loosen the strata, which is conducive to the drilling bit 4 entering the strata and avoids the drill getting stuck. It is suitable for pile construction in gravel and pebble strata, which can improve construction efficiency. In addition, the grouting nozzle 31 and the air jet nozzle 33 work together to make the grout and the strata mix evenly, which can improve the quality of pile construction.

[0029] Based on the above structural design, the jet grouting pile machine in this embodiment is suitable for pile construction in gravel and pebble strata, which can improve construction efficiency and pile quality.

[0030] like Figure 1 As shown, in some embodiments, the frame 1 includes a base 11, diagonal braces 12, and uprights 13. The uprights 13 are located at the front end of the base 11, and the power head 2 is slidably connected to the uprights 13 in the vertical direction. The upper end of the diagonal braces 12 is connected to the upper end of the uprights 13, and the lower end of the diagonal braces 12 is connected to the rear end of the base 11. Thus, the base 11, diagonal braces 12, and uprights 13 form a triangular support structure, enhancing the overall rigidity and anti-overturning ability of the frame 1.

[0031] like Figure 1 As shown, in some embodiments, the diagonal brace 12 is a hydraulic rod. The upper end of the diagonal brace 12 is hinged to the upper end of the column 13, the lower end of the diagonal brace 12 is hinged to the rear end of the base 11, and the lower end of the column 13 is hinged to the front end of the base 11. In this way, the verticality of the column 13 can be adjusted by the diagonal brace 12, thereby maintaining the verticality of the power head 2 during operation, and also facilitating the folding and collapsing structure during relocation and transportation.

[0032] like Figure 1 As shown, in some embodiments, the frame 1 also includes a tracked walking mechanism 14, which is located below the base 11. Thus, the tracked walking mechanism 14 improves ground mobility and ease of relocation, making it particularly suitable for the movement needs of complex construction sites such as soft soil and mud.

[0033] like Figure 2 As shown, in some embodiments, two diagonal braces 12 are provided, and the two diagonal braces 12 are symmetrically distributed along the front-back direction. In this way, the diagonal braces 12 can form a bidirectional stable support and evenly distribute the working load.

[0034] like Figure 3 As shown, in some embodiments, the blades 34 are arranged in a fan shape, with the width of the blades 34 near the jet grouting rod 3 being smaller than the width of the blades 34 away from the jet grouting rod 3. This facilitates better mixing and delivery of the grout during rotation.

[0035] like Figure 3 As shown, in some embodiments, the blade 34 is perpendicular to the outer peripheral wall of the jet grouting drill rod 3, and the blade 34 is inclined in the front-to-back direction. In this way, the blade 34 generates a downward thrust during drilling, enhancing the penetration capability of the drill bit 4.

[0036] like Figure 3 As shown, in some embodiments, the drill bit 4 is conical in shape, with the upper diameter of the drill bit 4 being larger than the lower diameter. This conical shape of the drill bit 4 helps reduce sinking resistance and guides it to smoothly penetrate the formation.

[0037] like Figure 3 As shown, in some embodiments, the outer peripheral wall of the drill bit 4 has multiple blades 41. Specifically, the blades 41 are typically made of wear-resistant alloy material to ensure the service life and drilling efficiency of the drill bit 4.

[0038] like Figure 4 As shown, the pile body 8 formed by the jet grouting pile machine in the above embodiment includes a mixing section 81 and a spraying section 82. The mixing section 81 is the area where the jet grouting drill rod 3 rotates and mixes, and the spraying section 82 is the spraying range of the grouting nozzle 31, the water nozzle 32 and the air nozzle 33. The pebbles within the solid area of ​​the pile body 8 are wrapped by the mixed cement grout, which significantly improves the pile formation effect, significantly reduces defects, and has strong mixing force, large mixing range, and high pile formation quality.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A jet grout machine characterized by, include: frame; The power head is slidably connected to the frame in the vertical direction; The upper end of the jet grouting drill rod is connected to the output end of the power head. The jet grouting drill rod has a slurry channel, a water channel and an air channel inside. The lower end of the jet grouting drill rod has a slurry nozzle connected to the outlet of the slurry channel, a water nozzle connected to the outlet of the water channel and an air nozzle connected to the outlet of the air channel. The outer peripheral wall of the jet grouting drill rod has multiple blades distributed around it in the vertical direction. The drill bit is detachably connected to the lower end of the jet grouting drill rod; The grouting pump is connected to the inlet of the grout channel; A water pressure pump, connected to the inlet of the water channel; and An air pump is connected to the inlet of the air passage.

2. The jetting pile machine according to claim 1, characterized in that, The frame includes a base, diagonal braces, and uprights. The uprights are located at the front end of the base. The power head is slidably connected to the uprights in the vertical direction. The upper end of the diagonal brace is connected to the upper end of the upright, and the lower end of the diagonal brace is connected to the rear end of the base.

3. The jet grouting pile machine according to claim 2, characterized in that, The diagonal brace is a hydraulic rod. The upper end of the diagonal brace is hinged to the upper end of the column, the lower end of the diagonal brace is hinged to the rear end of the base, and the lower end of the column is hinged to the front end of the base.

4. The jet grouting pile machine according to claim 2, characterized in that, The frame also includes a tracked walking mechanism, which is located below the base.

5. The jet grouting pile machine according to claim 2, characterized in that, There are two diagonal braces, which are symmetrically distributed along the front-to-back direction.

6. The jet grouting pile machine according to claim 1, characterized in that, The blades are perpendicular to the outer peripheral wall of the jet grouting drill rod, and the blades are inclined in the front-to-back direction.

7. The jet grouting pile machine according to claim 1, characterized in that, The drill bit is conical in shape, and the diameter of the upper end of the drill bit is larger than the diameter of the lower end of the drill bit.

8. The jet grouting pile machine according to claim 7, characterized in that, The outer peripheral wall of the drill bit has multiple blades.

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