A mud scraping assembly and dual wheel milling and agitating drill

Abstract

The utility model provides a kind of mud scraping assembly and double-wheel milling mixing drilling rig, it is related to drilling rig technical field, the mud scraping assembly includes mounting seat, threaded part and at least one mud scraping plate, mounting seat is used to be connected with the milling wheel frame of double-wheel milling mixing drilling rig, and the one end of the milling wheel of mounting seat towards double-wheel milling mixing drilling rig is equipped with mounting groove, in the axial direction of milling wheel, the opposite two side walls of mounting groove are respectively corresponded to be equipped with at least two rows of threaded holes, the one end of mud scraping plate towards mounting seat is equipped with at least two through holes along the direction of thickness, the pitch of adjacent two through holes is equal to the pitch of each row adjacent two threaded holes, mud scraping plate is used to move along the depth direction of mounting groove to make through hole and the threaded hole of one row on mounting groove side wall alignment, threaded part is used to be arranged in through hole and corresponding threaded hole.The utility model can adjust the pitch of mud scraping plate relative to the outer surface of milling wheel, to adapt to different working condition demand, greatly improve the versatility of mud scraping assembly.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and more specifically, to a mud scraping assembly and a dual-wheel milling and mixing drilling machine. Background Technology

[0002] With the vigorous promotion of infrastructure construction, underground space projects are increasing, and foundation pit projects are becoming increasingly deeper. Twin-wheel milling mixing drills, combining the technical characteristics of hydraulic trenching machines with the principles of deep mixing technology, are suitable for most foundation pit support projects and have therefore gained widespread application. Twin-wheel milling mixing drills typically have an auxiliary scraper above the milling wheel to remove soil from the milling wheel during construction, ensuring the milling head can function properly. Under different working conditions, it is sometimes necessary to adjust the distance between the scraper and the outer surface of the milling wheel to meet construction requirements. However, the distance between the existing scraper and the outer surface of the milling wheel is fixed after installation, usually requiring replacement with scrapers of different sizes to meet the needs, resulting in low standardization of existing scraper components. Summary of the Invention

[0003] The problem solved by this invention is how to improve the versatility of the sludge scraper assembly to meet the needs of different working conditions.

[0004] On one hand, this utility model provides a sludge scraping assembly for a twin-wheel milling mixing drill, including a mounting base, a threaded component, and at least one scraper. The mounting base is used to connect with the milling wheel frame of the twin-wheel milling mixing drill. The mounting base has a mounting groove at one end facing the milling wheel of the twin-wheel milling mixing drill. In the axial direction of the milling wheel, at least two rows of threaded holes are respectively provided on the opposite side walls of the mounting groove. The two rows of threaded holes on one side wall of the mounting groove are in communication with the outside. The scraper has at least two through holes extending along the thickness direction at one end facing the mounting base. The distance between two adjacent through holes is equal to the distance between two adjacent threaded holes in each row. The scraper is used to move along the depth direction of the mounting groove so that the through holes are aligned with one row of threaded holes on the side wall of the mounting groove. The threaded component is used to pass through the through holes and the corresponding threaded holes.

[0005] Optionally, the cross-sectional area of ​​the scraper gradually decreases from one end connected to the mounting base to the end away from the mounting base.

[0006] Optionally, the end of the scraper away from the mounting base has an inclined surface.

[0007] Optionally, multiple scraper blades and mounting grooves are provided, with each scraper blade corresponding to one of the mounting grooves, and each threaded component is used to fix the multiple scraper blades into the corresponding mounting groove.

[0008] Optionally, two adjacent scraper blades are connected by a connecting plate.

[0009] Optionally, the connection between the connecting plate and the scraper can be achieved by welding or by integral manufacturing.

[0010] Optionally, the length of the mounting groove in the width direction of the milling wheel frame is greater than the width of the scraper blade, and the number of threaded holes in each row on the sidewall of the mounting groove is greater than the number of through holes on the scraper blade.

[0011] Optionally, the two side walls of the scraper in the thickness direction are respectively fitted to the inner wall of the mounting groove.

[0012] Optionally, the sludge scraper assembly also includes a sealing element for passing through the threaded hole communicating with the outside.

[0013] On the other hand, this utility model provides a dual-wheel milling mixing drill, including the aforementioned mud scraping assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The mounting base is used to connect with the milling wheel frame of the twin-wheel milling mixing drill. The end of the mounting base facing the milling wheel of the twin-wheel milling mixing drill is provided with a mounting groove. On the axial direction of the milling wheel, at least two rows of threaded holes are respectively provided on the opposite side walls of the mounting groove. The two rows of threaded holes on one side wall of the mounting groove are connected to the outside. The end of the scraper facing the mounting base is provided with at least two through holes that penetrate along the thickness direction. The distance between two adjacent through holes is equal to the distance between two adjacent threaded holes in each row. Thus, when the bottom of the scraper blade needs to be relatively close to the outer surface of the twin-wheel milling machine, the end of the scraper blade with the through hole extends into the mounting groove, causing the through hole to align with the threaded holes in the lower row of the mounting groove, allowing threaded parts to pass through and fixing the scraper blade in the mounting groove. Similarly, when the bottom of the scraper blade needs to be relatively close to the outer surface of the twin-wheel milling machine, the end of the scraper blade with the through hole extends into the mounting groove, causing the through hole to align with the threaded holes in the upper row of the mounting groove, allowing threaded parts to pass through and fixing the scraper blade in the mounting groove, thereby improving the versatility of the scraper assembly. Attached Figure Description

[0015] Figure 1 This is a usage diagram of one embodiment of the mud scraping component in this utility model; Figure 2 This is a partial cross-sectional view of the mud scraping assembly in this utility model; Figure 3 This is a schematic diagram of one embodiment of the mounting base in this utility model; Figure 4 This is a schematic diagram of one embodiment of the scraper blade in this utility model; Figure 5 This is a schematic diagram of the structure of multiple scraper blades connected in this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Scraper assembly; 11. Mounting base; 111. Mounting groove; 112. Threaded hole; 12. Scraper blade; 121. Through hole; 122. Bevel; 13. Threaded part; 14. Connecting plate; 2. Milling wheel frame; 3. Milling wheel; 31. Toothed plate. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Furthermore, in the attached diagram, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down; in the attached diagram, the X-axis represents the horizontal direction, that is, the left and right position, and the positive direction of the X-axis (that is, the direction the arrow points to) represents right, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents left.

[0019] It should also be noted that the meanings of the aforementioned Z-axis and X-axis are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model.

[0020] like Figures 1 to 4 As shown, an embodiment of this utility model provides a mud scraping assembly 1 for a twin-wheel milling mixing drill, including a mounting base 11, a threaded component 13, and at least one mud scraper 12. The mounting base 11 is used to connect with the milling wheel frame 2 of the twin-wheel milling mixing drill. The mounting base 11 has a mounting groove 111 at one end facing the milling wheel 3 of the twin-wheel milling mixing drill. On the axial direction of the milling wheel 3, at least two rows of threaded holes 112 are respectively provided on the opposite side walls of the mounting groove 111. The two rows of threaded holes 112 on one side wall of the mounting groove 111 are connected to the outside. The mud scraper 12 has at least two through holes 121 extending along the thickness direction at one end facing the mounting base 11. The distance between two adjacent through holes 121 is equal to the distance between two adjacent threaded holes 112 in each row. The mud scraper 12 is used to move along the depth direction of the mounting groove 111 so that the through holes 121 are aligned with one row of threaded holes 112 on the side wall of the mounting groove. The threaded component 13 is used to pass through the through holes 121 and the corresponding threaded holes 112.

[0021] It should be understood that the milling wheel 3 is provided with a toothed plate 31. In order to avoid interference between the scraper 12 and the toothed plate 31, the scraper 12 and the toothed plate 31 are offset in the vertical direction, and the scraper 12 is located outside the rotation path of the toothed plate 31.

[0022] like Figure 1 , 2 As shown, the sludge scraping assembly 1 includes a mounting base 11, two threaded parts 13, and a scraper 12. The mounting base 11 is positioned above the washing wheel and welded to the milling wheel frame 2. The lower end face of the mounting base 11 is provided with a mounting groove 111. On the axial direction of the milling wheel 3, two rows of threaded holes 112 are respectively provided on the opposite side walls of the mounting groove 111. Each row has five threaded holes 112, and the two rows of threaded holes 112 on one side wall are connected to the outside. One end of the scraper 12 is provided with two through holes 121 extending along the thickness direction. The distance between two adjacent through holes 121 is equal to the distance between two adjacent threaded holes 112 in each row. The threaded parts 13 are long bolts. Thus, when the bottom end of the scraper 12 needs to have a relatively small gap with the outer surface of the milling wheel 3, the end of the scraper 12 with the through hole 121 extends into the mounting groove 111, causing the through hole 121 to align with the threaded holes 112 in the lower row of the mounting groove 111 and allowing the threaded parts 13 to pass through, so as to fix the scraper 12 in the mounting groove 111; similarly, when the bottom end of the scraper 12 needs to have a relatively large gap with the outer surface of the milling wheel 3, the end of the scraper 12 with the through hole 121 extends into the mounting groove 111, causing the through hole 121 to align with the threaded holes 112 in the upper row of the mounting groove 111 and allowing the threaded parts 13 to pass through, so as to fix the scraper 12 in the mounting groove 111.

[0023] The sludge scraper assembly 1 in this embodiment can be directly installed during the production of a twin-wheel milling mixing drill, or it can be added to an existing model with sufficient installation space.

[0024] Optionally, the cross-sectional area of ​​the scraper 12 gradually decreases from one end connected to the mounting base 11 to the end away from the mounting base 11.

[0025] like Figure 4 As shown, the scraper blade 12 has a plate-like structure that is wider at the top and narrower at the bottom. This means the area at the top of the scraper blade 12 is larger than the area at the bottom, thus ensuring a stable connection. During production, a rectangular plate is first selected, and then one corner is cut off to form a wedge shape.

[0026] Furthermore, the end of the scraper blade 12 furthest from the mounting base 11 is provided with an inclined surface 122. Thus, while meeting strength requirements, not only can material waste be avoided, but the contact area between the scraper blade 12 and the soil can also be increased.

[0027] Optionally, multiple scraper blades 12 and mounting grooves 111 are provided respectively, with multiple scraper blades 12 and multiple mounting grooves 111 being provided one-to-one, and each threaded component 13 is used to fix multiple scraper blades 12 into the corresponding mounting grooves 111 respectively.

[0028] like Figure 2 , 3 As shown, there are two scraper blades 12 and two mounting slots 111. One scraper blade 12 is installed in each mounting slot 111. The sidewalls of two adjacent mounting slots 111 share two rows of threaded holes 112, meaning that two adjacent mounting slots 111 are connected through the two rows of threaded holes 112. After the scraper blade 12 in each mounting slot 111 moves into position, the two through holes 121 of all scraper blades 12 are correspondingly set and aligned with the two threaded holes 112 in the upper or lower row. Two threaded parts 13 are respectively inserted into the corresponding threaded holes 112 and through holes 121, thereby fixing the two scraper blades 12 in the corresponding mounting slots 111.

[0029] In other embodiments, the number of scraper blades 12 and mounting grooves 111 can be three, four, or five, etc., which is not limited here and depends on actual needs.

[0030] Optionally, two adjacent scraper blades 12 are connected by a connecting plate 14.

[0031] like Figure 5 As shown, the two scraper blades 12 are connected by a connecting plate 14. The connecting plate 14 is a rectangular plate, with its two ends perpendicularly connected to the two scraper blades 12 in the width direction. In this way, under the action of the connecting plate 14, all the scraper blades 12 are integrated into a single unit, which facilitates installation and disassembly.

[0032] In this embodiment, the connection between the connecting plate 14 and the scraper plate 12 can be achieved by welding or by integral manufacturing. Preferably, the two are integrally manufactured, which results in high structural strength and resistance to damage.

[0033] Furthermore, the connecting plate 14 and the scraper 12 are provided with an arc transition structure at the connection point. When the connection point of the connecting plate 14 and the scraper 12 is subjected to force, the arc transition structure can reduce the stress at that point, thereby reducing the possibility of the connecting plate 14 and the scraper 12 breaking at the connection point.

[0034] Optionally, the length of the mounting groove 111 in the width direction of the milling wheel frame 2 is greater than the width of the scraper blade 12, and the number of each row of threaded holes 112 on the side wall of the mounting groove 111 is greater than the number of through holes 121 on the scraper blade 12.

[0035] like Figure 3 As shown, the mounting groove 111 is a U-shaped groove, and the mounting groove 111 is in the width direction of the milling wheel frame 2 (e.g., Figure 1The length along the X-axis is greater than the width of the scraper 12, thus facilitating the movement of the scraper 12. The number of threaded holes 112 in each row on the side wall of the mounting groove 111 is five, and the number of through holes 121 on the scraper 12 is two. Therefore, the scraper 12 has at least four mounting positions in the mounting groove 111.

[0036] In this way, when the threaded part 13 is not installed, the scraper 12 moves back and forth in the mounting groove 111 until it moves to the appropriate position. At this time, the through hole 121 on the scraper 12 is aligned with the corresponding threaded hole 112, and finally it can be fixed by the threaded part 13.

[0037] Optionally, the two side walls of the scraper 12 in the thickness direction are respectively fitted to the inner wall of the mounting groove 111. In this way, when the scraper 12 is located in the mounting groove 111, the two side walls of the mounting groove 111 can also play a limiting role.

[0038] Optionally, the sludge scraper assembly 1 also includes a sealing element for passing through a threaded hole 112 that communicates with the outside.

[0039] In this embodiment, the sealing component is a screw with a head. After the threaded component 13 is installed, a sealing component is inserted into each of the other outermost threaded holes 112. This can prevent dirt from entering when the milling head is working and protect the other outermost threaded holes 112.

[0040] In other methods, the sealing component can also be a headless screw with an internal pentagonal or hexagonal groove at one end. With the help of a special screwdriver, it can also serve the purpose of installing and removing the sealing component.

[0041] Another embodiment of the present invention is a twin-wheel milling mixing drill, which includes the mud scraping assembly 1 as described above.

[0042] In this embodiment, the dual-wheel milling mixing drill also includes a milling wheel frame 2 and a milling wheel 3. The milling wheel 3 is rotatably mounted on the milling wheel frame 2. The mounting seat 11 of the mud scraping assembly 1 is mounted on the milling wheel frame 2 above the milling wheel 3. The mud scraping plate 12 of the mud scraping assembly 1 is positioned facing the outer surface of the milling wheel 3.

[0043] The dual-wheel milling mixing drill of this embodiment has the same beneficial effects as the above-mentioned mud scraping assembly 1 compared with the prior art, so it will not be described again here.

[0044] Readers should understand that in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A sludge scraping assembly for a twin-wheel milling mixing drill, characterized in that, The system includes a mounting base (11), a threaded component (13), and at least one scraper (12). The mounting base (11) is used to connect to the milling wheel frame (2) of the twin-wheel milling mixing drill. The mounting base (11) has a mounting groove (111) at one end facing the milling wheel (3) of the twin-wheel milling mixing drill. Along the axial direction of the milling wheel (3), at least two rows of threaded holes (112) are respectively provided on the opposite side walls of the mounting groove (111). Two rows of threaded holes (112) on one side wall of the mounting groove (111) communicate with the outside. The scraper (12) has at least two through holes (121) extending along the thickness direction at one end facing the mounting base (11). The distance between two adjacent through holes (121) is equal to the distance between two adjacent threaded holes (112) in each row. The scraper (12) is used to move along the depth direction of the mounting groove (111) so that the through holes (121) are aligned with one row of threaded holes (112) on the side wall of the mounting groove (111). The threaded part (13) is used to pass through the through holes (121) and the corresponding threaded holes (112).

2. The sludge scraping assembly according to claim 1, characterized in that, The cross-sectional area of ​​the scraper (12) gradually decreases from one end connected to the mounting base (11) to the other end away from the mounting base (11).

3. The sludge scraping assembly according to claim 2, characterized in that, The scraper blade (12) has an inclined surface (122) at one end away from the mounting base (11).

4. The sludge scraping assembly according to claim 1, characterized in that, The scraper blade (12) and the mounting groove (111) are provided in multiple ways. The multiple scraper blades (12) and the multiple mounting grooves (111) are provided in a one-to-one correspondence. Each threaded part (13) is used to fix the multiple scraper blades (12) in the corresponding mounting groove (111).

5. The sludge scraping assembly according to claim 4, characterized in that, The two adjacent scraper blades (12) are connected by a connecting plate (14).

6. The sludge scraping assembly according to claim 5, characterized in that, The connection between the connecting plate (14) and the scraper (12) can be achieved by welding or by integral manufacturing.

7. The sludge scraping assembly according to claim 1, characterized in that, The length of the mounting groove (111) in the width direction of the milling wheel frame (2) is greater than the width of the scraper (12), and the number of each row of threaded holes on the side wall of the mounting groove (111) is greater than the number of through holes (121) on the scraper (12).

8. The sludge scraping assembly according to claim 1, characterized in that, The two side walls of the scraper (12) in the thickness direction are respectively attached to the inner wall of the mounting groove (111).

9. The sludge scraping assembly according to claim 1, characterized in that, It also includes a sealing element for being inserted into the threaded hole (112) that communicates with the outside.

10. A twin-wheel milling mixing drill, characterized in that, Includes the sludge scraping assembly as described in any one of claims 1 to 9.

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