Spiral unearthing device with variable cross section

Abstract

The utility model discloses a spiral unearthing device adopting a variable cross-section, which belongs to the field of civil engineering machinery, and comprises an earth digging assembly, an earth digging assembly, an earth digging assembly and an earth digging assembly, the earth digging assembly comprises an earth bin and a cutter head, the earth bin is cylindrical and is horizontally arranged, and the cutter head is rotatably connected to the front end of the earth bin through a driving structure; the soil discharging assembly is obliquely arranged on the soil bin through a supporting structure, the bottom end of the soil discharging assembly communicates with the bottom of the soil bin, and the inner diameter of an inner cavity of the soil discharging assembly is reduced in a stepped mode from bottom to top; the utility model has the beneficial effects that the unearthing shell is arranged into a plurality of diameter sections with different inner diameters, so that a pressure difference can be formed in the unearthing shell, a better water closing effect is achieved, the problem of spewing during construction is effectively solved, and the unearthing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering machinery, specifically to a spiral soil removal device with a variable cross-section. Background Technology

[0002] With the rapid advancement of urban rail transit construction in my country, the geological strata traversed by earth pressure balance shield tunnels are becoming increasingly complex. This places higher demands on the soil discharge, pressure maintenance, and pressure regulation functions of screw conveyors. Especially in water-rich sandy layers, abrupt changes in soil quality may manifest as a large amount of groundwater or a high sand content. During soil discharge, the screw conveyor is prone to gushing. Since gushing is difficult to control, it makes it difficult to ensure construction safety and reduces the soil discharge efficiency of the screw conveyor.

[0003] When solving such problems, the common method in engineering is to improve the excavated soil. The specific implementation method is to add a soil conditioner to the soil chamber to improve the various properties of the soil. However, in the field, it is often not possible to quickly and accurately determine the type and amount of conditioner.

[0004] Therefore, we propose a spiral soil removal device with a variable cross-section. Summary of the Invention

[0005] To address the aforementioned shortcomings of the existing technology, this utility model provides a spiral soil removal device with a variable cross-section.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] A variable cross-section spiral soil removal device includes: a soil excavation component, including a soil chamber and a cutterhead, the soil chamber being cylindrical and horizontally arranged, the cutterhead being rotatably connected to the front end of the soil chamber via a drive structure; and a soil removal component, which is inclinedly arranged on the soil chamber via a support structure, the bottom end of the soil removal component being connected to the bottom of the soil chamber, the soil removal component being used to remove the broken soil from the soil chamber, and the inner diameter of the internal cavity of the soil removal component being stepped and decreasing from bottom to top.

[0008] The soil is broken by the excavating component, and the broken soil is discharged along the excavation component as the excavating component moves forward. By setting the inner diameter of the cavity inside the excavation component to be stepped and reduced, a pressure difference can be formed on both sides of the cross-section, which can achieve a better water-tight effect and effectively solve the problem of possible gushing during construction, thereby improving the soil removal efficiency of the device.

[0009] Further specifying, the drive structure is a cutter head drive motor, which is fixedly connected to the rear end of the soil chamber via a mounting bracket, and the output shaft is fixedly connected to the center of the cutter head.

[0010] Further defined, the soil removal assembly includes a soil removal shell, spiral soil removal blades, and a soil removal motor; the inner diameter of the soil removal shell is stepped from bottom to top, and the bottom end of the soil removal shell is connected to the inside of the soil chamber; the soil removal motor is fixedly mounted on the top end face of the soil removal shell; the spiral soil removal blades are rotatably mounted inside the soil removal shell along the axial direction of the soil removal shell and are fixedly connected to the output shaft of the soil removal motor; a soil outlet is provided downward on the top circumference of the soil removal shell; by connecting the bottom end of the soil removal shell to the inside of the soil chamber, the spiral soil removal blades inside the soil removal shell rotate under the drive of the soil removal motor, and the rotation of the spiral soil removal blades drives the broken soil in the soil chamber to rise into the soil removal shell, and is discharged from the soil outlet on the soil removal shell, thus completing the transfer of soil.

[0011] Further defined, the excavation shell consists of a large-diameter section, a medium-diameter section, and a small-diameter section from bottom to top. The large-diameter section and the medium-diameter section, as well as the medium-diameter section and the small-diameter section, are all connected by conical tubes. The support structure is a support frame, which is vertically located below the small-diameter section. The connection between the large-diameter section and the medium-diameter section, as well as the medium-diameter section and the small-diameter section, by the conical tubes not only ensures the water-tightness effect brought about by the change in diameter, but also improves the fluidity of the crushed soil inside the excavation shell.

[0012] Further defining the mounting bracket, it includes connecting rods and connecting plates. The surface of the connecting plate matches the housing of the cutter head drive motor. One end of the connecting rod is fixedly connected to the connecting plate, and the other end is fixedly connected to the rear end of the soil chamber. Both the connecting plate and the connecting rod are provided with multiple connecting rods and multiple connecting plates arranged around the periphery of the cutter head drive motor housing. By setting multiple connecting rods and multiple connecting plates, the connecting plate covers and fixes the housing of the cutter head drive motor, making it more stable.

[0013] Further defining the support frame, it includes a base plate, uprights on the base plate, and diagonal braces on the base plate. The uprights are vertically positioned at the center of the base plate, with their tops fixedly connected to the small-diameter section. There are two diagonal braces, symmetrically positioned on both sides of the base plate on either side of the uprights, with their tops inclined towards the uprights. The tops of the diagonal braces are also fixedly connected to the small-diameter section. By setting up the uprights and the two symmetrically positioned diagonal braces, the excavated shell is supported, making the structure more stable and the fixation more secure.

[0014] The beneficial effects of this utility model are as follows: by setting the soil excavation shell into multiple sections with different inner diameters, a pressure difference can be formed inside the soil excavation shell, which can achieve a better water-tight effect, effectively solve the problem of gushing during construction, and improve the soil excavation efficiency. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention;

[0016] Figure 2 This is the left view of the cutter head;

[0017] Figure 3This is a schematic diagram showing the cooperation between the mounting bracket and the cutter head drive motor from a right-view perspective.

[0018] Figure 4 This is the right view of the support frame;

[0019] Figure 5 This is a simplified structural diagram of the spiral-shaped blade for excavating soil.

[0020] The symbols for each component are as follows:

[0021] Excavation assembly 1, soil chamber 11, cutterhead 12, cutterhead drive motor 13, mounting frame 14, connecting rod 141, connecting plate 142, soil excavation assembly 2, soil excavation shell 21, large diameter section 211, medium diameter section 212, small diameter section 213, spiral soil excavation blade 22, soil excavation motor 23, soil excavation port 24, support frame 25, base plate 251, upright 252, diagonal brace 253, conical cylinder 26. Detailed Implementation

[0022] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0023] Example:

[0024] like Figures 1-5As shown, a variable cross-section spiral soil removal device includes a soil excavation component 1 and a soil removal component 2. The soil excavation component 1 includes a soil chamber 11 and a cutterhead 12. The soil chamber 11 is cylindrical and horizontally arranged. The cutterhead 12 is rotatably connected to the front end of the soil chamber 11 via a drive structure. The drive structure is a cutterhead drive motor 13, which is fixedly connected to the rear end of the soil chamber 11 via a mounting bracket 14, and its output shaft is fixedly connected to the center of the cutterhead 12. The mounting bracket 14 includes a connecting rod 141 and a connecting plate 142. The surface of the connecting plate 142 is flush with the cutterhead drive motor. The housing of the machine 13 is matched. One end of the connecting rod 141 is fixedly connected to the connecting plate 142, and the other end is fixedly connected to the rear end of the soil chamber 11. Both the connecting plate 142 and the connecting rod 141 are provided with several [unclear] and are arranged around the periphery of the housing of the cutter disc drive motor 13. The soil discharge component 2 is inclinedly arranged on the soil chamber 11 through the support frame 25. The bottom end of the soil discharge component 2 is connected to the bottom of the soil chamber 11. The soil discharge component 2 is used to transport the broken soil in the soil chamber 11. The inner diameter of the internal cavity of the soil discharge component 2 is set in a stepped shape from bottom to top. The soil discharge component 2 includes a soil discharge shell 21. The system includes a spiral excavation blade 22 and an excavation motor 23. The excavation housing 21 comprises a large-diameter section 211, a medium-diameter section 212, and a small-diameter section 213 from bottom to top. The large-diameter section 211 and the medium-diameter section 212, as well as the medium-diameter section 212 and the small-diameter section 213, are connected by a conical cylinder 26. A support frame 25 is vertically positioned below the small-diameter section 213. The bottom end of the excavation housing 21 communicates with the interior of the soil chamber 11. The excavation motor 23 is fixedly mounted on the top end face of the excavation housing 21. The spiral excavation blade 22 rotates within the excavation housing 21 along its axial direction and is connected to the excavation motor. The output shaft of the motor 23 is fixedly connected, and the top circumference of the soil discharge housing 21 is provided with a downward-facing soil discharge port 24; the support frame 25 includes a base plate 251, a vertical rod 252 provided on the base plate 251, and a diagonal rod 253 provided on the base plate 251. The vertical rod 252 is vertically located at the center of the base plate 251, and its top end is fixedly connected to the small diameter section 213. There are two diagonal rods 253, which are symmetrically arranged on the base plate 251 on both sides of the vertical rod 252, and their tops are inclined towards the vertical rod 252. The top ends of the diagonal rods 253 are also fixedly connected to the small diameter section 213.

[0025] The soil is broken up by the excavating component 1, and the broken soil is discharged along the excavation component 2 as the excavating component 1 moves forward. By setting the inner diameter of the cavity of the excavation component 2 to a stepped reduction, a pressure difference can be formed on both sides of the cross-section of the cavity, which can achieve a better water-tight effect and effectively solve the problem of possible gushing during construction, thus improving the soil discharge efficiency of the device. By connecting the bottom end of the excavation shell 21 to the inside of the soil chamber 11, the spiral excavation blades 22 inside the excavation shell 21 rotate under the drive of the excavation motor 23. The rotation of the spiral excavation blades 22 drives the soil chamber. The broken soil inside section 11 rises into the excavation shell 21 and is discharged from the excavation port 24 on the excavation shell 21, completing the transfer of the soil. The conical cylinder 26 connects the large diameter section 211 and the medium diameter section 212, and the medium diameter section 212 and the small diameter section 213, which not only ensures the water tightness brought about by the change in diameter, but also improves the fluidity of the broken soil inside the excavation shell 21. By setting multiple connecting rods 141 and multiple connecting plates 142, the connecting plates 142 cover and fix the shell of the cutter head drive motor 13, making it more stable. By setting uprights 252 and two symmetrically set diagonal bars 253, the excavation shell 21 is supported, making the structure more stable and the fixation more secure.

Claims

1. A spiral soil removal device employing a variable cross-section, characterized in that, include: The excavation assembly (1) includes a soil chamber (11) and a cutterhead (12). The soil chamber (11) is cylindrical and horizontally arranged. The cutterhead (12) is rotatably connected to the front end of the soil chamber (11) through a drive structure. The soil removal component (2) is inclinedly mounted on the soil chamber (11) by a support structure. The bottom end of the soil removal component (2) is connected to the bottom of the soil chamber (11). The soil removal component (2) is used to transport the broken soil out of the soil chamber (11). The inner diameter of the soil removal component (2) is set in a stepped manner from bottom to top.

2. The variable cross-section spiral soil removal device according to claim 1, characterized in that, The drive structure is a cutter head drive motor (13), which is fixedly connected to the rear end of the soil chamber (11) via a mounting bracket (14), and its output shaft is fixedly connected to the center of the cutter head (12).

3. The variable cross-section spiral soil removal device according to claim 2, characterized in that, The soil removal assembly (2) includes a soil removal shell (21), a spiral soil removal blade (22), and a soil removal motor (23). The inner diameter of the soil removal shell (21) is stepped from bottom to top, and the bottom end of the soil removal shell (21) is connected to the inside of the soil chamber (11). The soil removal motor (23) is fixedly mounted on the top end face of the soil removal shell (21). The spiral soil removal blade (22) is rotatably mounted inside the soil removal shell (21) along the axial direction of the soil removal shell (21) and is fixedly connected to the output shaft of the soil removal motor (23). A soil removal port (24) is provided downward on the top circumference of the soil removal shell (21).

4. The variable cross-section spiral soil removal device according to claim 3, characterized in that, The excavated shell (21) includes a large diameter section (211), a medium diameter section (212), and a small diameter section (213) from bottom to top. The large diameter section (211) and the medium diameter section (212), as well as the medium diameter section (212) and the small diameter section (213), are connected by a conical tube (26). The support structure is a support frame (25) which is vertically located below the small diameter section (213).

5. The variable cross-section spiral soil removal device according to claim 2, characterized in that, The mounting bracket (14) includes a connecting rod (141) and a connecting plate (142). The surface of the connecting plate (142) matches the housing of the cutter head drive motor (13). One end of the connecting rod (141) is fixedly connected to the connecting plate (142), and the other end is fixedly connected to the rear end of the soil chamber (11). Both the connecting plate (142) and the connecting rod (141) are provided with a plurality of rods arranged around the periphery of the housing of the cutter head drive motor (13).

6. The variable cross-section spiral soil removal device according to claim 4, characterized in that, The support frame (25) includes a base plate (251), an upright (252) on the base plate (251), and a diagonal (253) on the base plate (251). The upright (252) is vertically positioned at the center of the base plate (251) and its top end is fixedly connected to the small diameter section (213). There are two diagonal (253) arranged symmetrically on the base plate (251) on both sides of the upright (252) and their tops are inclined toward the upright (252). The top end of the diagonal (253) is also fixedly connected to the small diameter section (213).

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