Protection mechanism for milling head of double-wheel slot milling machine

Abstract

The utility model discloses a protection mechanism for a milling head of a double-wheel slot milling machine, and relates to the technical field of protection structures, the protection mechanism comprises a baffle and a fixing assembly connected to the baffle, the fixing assembly is used for being connected with a guide plate on a milling wheel frame, the side, away from the fixing assembly, of the baffle extends in the direction away from the fixing assembly, and the side, away from the fixing assembly, of the baffle extends in the direction away from the fixing assembly. The end, away from the fixing assembly, of the baffle is located outside the circumferential milling range of the milling head. Due to the fact that the end, away from the fixing assembly, of the baffle is located outside the circumferential milling range of the milling head, when the double-wheel slot milling machine moves in the vertical direction, the baffle can abut against a web of the H-shaped steel firstly, the milling head of the double-wheel slot milling machine is prevented from making direct contact with a flange plate of the H-shaped steel, and the H-shaped steel is protected. And the baffles scrape sludge and other impurities on the surface of the H-shaped steel in the moving process, and the later wall brushing workload is reduced.

Description

Technical Field

[0001] This application relates to the technical field of protective structures, and in particular to a protective mechanism for a milling head of a dual-wheel grooving machine. Background Technology

[0002] Diaphragm walls, as a reliable underground structural form, have been widely used in deep foundation pit support, underground construction, and tunnel engineering. With the development of urban underground space towards ultra-deep and high-precision methods, the twin-wheel trenching machine, as a key piece of equipment in diaphragm wall construction, directly impacts the progress and cost of the entire project through its construction efficiency and quality.

[0003] A Chinese patent with publication number CN119571884A discloses a double-wheel milling machine. Guide plates 31 are fixedly connected to both sides of the milling wheel frame 3. The guide plates 31 are provided with two guide surfaces, and the distance between the two guide surfaces gradually decreases towards the bottom of the guide plates 31.

[0004] Joints are used in the construction of diaphragm walls, and there are various types of joints. When the joint is made of H-beams, it is mainly used to solve the connection problem between the trench sections, ensuring the continuity, waterproofing, and overall stability of the wall structure. When a twin-wheel trenching machine is milling the lower trench section, there is a risk that the milling head may collide with the exposed H-beam flange of the upper trench section. This collision can cause deformation of the H-beam and may even further induce wall leakage, seriously threatening structural safety and requiring improvement. Utility Model Content

[0005] The purpose of this application is to provide a protective mechanism for the milling head of a twin-wheel milling machine to prevent the milling head from touching the flange of an H-beam.

[0006] The protective mechanism for a milling head of a twin-wheel grooving machine provided in this application adopts the following technical solution: it includes a baffle and a fixing component connected to the baffle. The fixing component is used to connect with a guide plate on the milling wheel frame. The side of the baffle away from the fixing component extends in a direction away from the fixing component, and the end of the baffle away from the fixing component is located outside the circumferential milling range of the milling head.

[0007] By adopting the above technical solution, the length between the baffle and the fixed component is selected to fit the specifications of the H-beam. Since the end of the baffle furthest from the fixed component is outside the circumferential milling range of the milling head, when the twin-wheel grooving machine moves vertically, the baffle first abuts against the web of the H-beam, preventing the milling head from directly contacting the flange of the H-beam, thus protecting the H-beam. During its movement, the baffle scrapes away mud and other impurities from the surface of the H-beam, reducing the amount of subsequent wall-painting work.

[0008] Optionally, the side of the baffle away from the fixing component is the abutment surface. The baffle has two wide surfaces and two narrow surfaces. The wide surfaces and the narrow surfaces are perpendicular to each other. The distance between the two narrow surfaces is less than the distance between the two wide surfaces. The narrow surfaces are parallel to the moving direction of the baffle.

[0009] By adopting the above technical solution, the distance between the two narrow surfaces is less than the distance between the two wide surfaces. This baffle arrangement reduces the force-bearing area between the baffle and the mud, increases the pressure between the baffle and the mud, and facilitates the insertion of the baffle into the mud.

[0010] Optionally, the fixing assembly includes a fixing plate connected to the baffle and a fixing member connected to the fixing plate, wherein the fixing plate is connected to the guide plate through the fixing member.

[0011] By adopting the above technical solution, the fixing plate and fixing parts in the fixing assembly cooperate with each other to ensure that the baffle is firmly connected to the guide plate of the milling wheel frame, thereby providing reliable protection for the milling head, facilitating installation and disassembly, and improving construction efficiency.

[0012] Optionally, the baffle is arranged perpendicular to the fixing plate, and the fixing plate is arranged symmetrically along the center line of the baffle.

[0013] By adopting the above technical solution, the perpendicular arrangement of the baffle and the fixing plate ensures the structural stability between them and effectively reduces structural deformation caused by external forces during construction. The symmetrical arrangement of the fixing plate along the centerline of the baffle further improves the overall balance of the protective structure, making the stress distribution more uniform.

[0014] Optionally, the baffle is welded to the fixing plate.

[0015] By adopting the above technical solution, welding the baffle and the fixed plate can significantly improve the connection strength between the two, ensuring the stability of the protective structure during the operation of the twin-wheel grooving machine.

[0016] Optionally, the fixing plate is provided with two guide surfaces, and the distance between the two guide surfaces gradually decreases towards the bottom of the fixing plate.

[0017] By adopting the above technical solution, the distance between the two guide surfaces gradually decreases towards the bottom of the fixed plate, so that the bottom of the fixed plate forms a pointed tip, which reduces the force-bearing area between the fixed plate and the mud, increases the pressure between the fixed plate and the mud, and facilitates the insertion of the baffle into the mud.

[0018] Optionally, the baffle is provided with lifting lugs.

[0019] By adopting the above technical solution, the lifting lug is connected to the twin-wheel grooving machine through the lifting rope. When there is a problem with the connection between the fixed plate and the guide plate and the fixed plate separates from the guide plate, the lifting lug and the lifting rope play a role in ensuring that the fixed plate does not fall off the twin-wheel grooving machine and avoids the fixed plate being left in the lower groove section.

[0020] Optionally, the contact surface is arranged parallel to the moving direction of the baffle.

[0021] By adopting the above technical solution, the contact area between the baffle and the H-beam is increased, so that the baffle can maintain more stable contact with the flange of the H-beam during the movement of the twin-wheel milling machine.

[0022] Optionally, the fastener is a bolt and a nut threaded onto the bolt, and the fixing plate is provided with a through hole for the threaded end of the bolt to pass through.

[0023] By adopting the above technical solution, the fastener uses a combination of bolts and nuts, enabling quick assembly and disassembly between the baffle and the guide plate, thus improving the installation efficiency and maintenance convenience of the protective structure. Simultaneously, the fastener plate is equipped with through holes for the threaded end to pass through, making the position of the fastener more precise and ensuring the stability of the baffle during operation. This effectively prevents loosening or detachment due to insecure fastening, thereby improving the reliability of the twin-wheel grooving machine under complex working conditions.

[0024] Optionally, two of the fasteners are connected to the fixing plate, and the baffle is located between the two fasteners.

[0025] By adopting the above technical solution, the installation of two fasteners further enhances the stability of the protective structure, ensuring that the baffle can maintain a good protective effect under complex working conditions.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Because the end of the baffle furthest from the fixed assembly is outside the circumferential milling range of the milling head, when the twin-wheel grooving machine moves vertically, the baffle will first abut against the web of the H-beam, preventing the milling head of the twin-wheel grooving machine from directly contacting the flange of the H-beam, thus protecting the H-beam. During its movement, the baffle scrapes away mud and other impurities from the surface of the H-beam, reducing the amount of subsequent wall-painting work.

[0028] 2. The perpendicular arrangement of the baffle and the fixing plate ensures the structural stability between them, effectively reducing structural deformation caused by external forces during construction. The symmetrical arrangement of the fixing plates along the centerline of the baffle further improves the overall balance of the protective structure, making the stress distribution more even. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the embodiment of this application and the milling wheel frame.

[0030] Figure 2 This is one of the overall structural schematic diagrams of an embodiment of this application, showing the fixing component.

[0031] Figure 3 This is the second overall structural schematic diagram of an embodiment of this application, showing the through hole.

[0032] Explanation of reference numerals in the attached drawings: 1. Baffle; 11. Abutment surface; 12. Lifting lug; 13. Narrow surface; 14. Wide surface; 15. Inclined surface; 2. Fixing component; 21. Fixing plate; 211. Through hole; 212. Guide surface; 22. Fixing element; 221. Bolt; 222. Nut; 3. Milling wheel frame; 31. Guide plate. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail.

[0034] This application discloses a protective mechanism for the milling head of a twin-wheel grooving machine.

[0035] Combination Figure 1 and Figure 2 As shown, the device includes a baffle 1 and a fixing assembly 2 connected to one side of the baffle 1. The fixing assembly 2 includes a fixing plate 21 welded to the baffle 1 and two fixing members 22 oppositely disposed on the fixing plate 21. The side of the baffle 1 away from the fixing plate 21 extends in a direction away from the fixing plate 21, and the end of the baffle 1 away from the fixing plate 21 is located outside the circumferential milling range of the milling head. The extending direction of the baffle 1 is perpendicular to the fixing plate 21, and the fixing plate 21 is symmetrically arranged along the centerline of the baffle 1.

[0036] Combination Figure 2 and Figure 3 As shown, the baffle 1 is located between two fixing members 22. The fixing members 22 are bolts 221 and nuts 222 threaded onto bolts 221. The fixing plate 21 has a through hole 211 for the threaded end of bolts 221 to pass through, and the threaded end of bolts 221 can pass through the guide plate 31 of the milling wheel frame 3.

[0037] Combination Figure 2 and Figure 3 As shown, guide surfaces 212 are provided on both sides of the fixing plate 21, and the distance between the two guide surfaces 212 gradually decreases towards the bottom of the fixing plate 21. The length of the upper surface of the fixing plate 21 is 55cm-60cm, and the height of the side of the fixing plate 21 away from the baffle 1 is between 30cm-35cm.

[0038] Combination Figure 2 and Figure 3 As shown, the side of the baffle 1 away from the fixed plate 21 is the abutment surface 11. The side of the fixed plate 21 near the baffle 1 is parallel to the abutment surface 11. The abutment surface 11 and the moving direction of the baffle 1 are parallel. The closest distance between the abutment surface 11 and the fixed plate 21 is 27cm-30cm, and the farthest distance between the abutment surface 11 and the fixed plate 21 is 33cm-35cm. The exposed H-beam flange of the upper channel section extends 30cm. The abutment surface 11 will first touch the web of the H-beam. A lifting lug 12 is welded to the upper surface of the baffle 1, and the height of the lifting lug 12 is 10cm-15cm. Narrow surfaces 13 are provided on both the left and right sides of the baffle 1, and wide surfaces 14 are provided on both the top and bottom sides of the baffle 1. The wide surfaces 14 are perpendicular to the narrow surfaces 13. The distance between the two narrow surfaces 13 is less than the distance between the two wide surfaces 14. The narrow surfaces 13 and the moving direction of the baffle 1 are parallel. Both narrow surfaces 13 are provided with inclined surfaces 15. The inclined surfaces 15 are located at the end of the narrow surface 13 away from the lug 12. The distance between the two narrow surfaces 13 gradually decreases in the direction away from the lug 12.

[0039] The implementation principle of the protective mechanism for the milling head of a double-wheel grooving machine according to an embodiment of this application is as follows:

[0040] Since the end of the baffle 1 away from the fixed component 2 is outside the circumferential milling range of the milling head, when the guide plate 31 moves vertically, the baffle 1 will first abut against the web of the H-beam, preventing the milling head of the twin-wheel grooving machine from directly contacting the flange of the H-beam, thus protecting the H-beam.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protection mechanism for a double-wheel trencher head, characterized by: Includes a baffle (1) and a fixing component (2) connected to the baffle (1), the fixing component (2) being used to connect to a guide plate (31) on a milling wheel holder (3), the side of the baffle (1) away from the fixing component (2) extending in a direction away from the fixing component (2), and the end of the baffle (1) away from the fixing component (2) being located outside the circumferential milling range of the milling head.

2. The protection mechanism of a dual-wheel trencher cutting head according to claim 1, characterized in that: The side of the baffle (1) away from the fixing component (2) is the abutment surface (11). The baffle (1) is provided with two wide surfaces (14) and two narrow surfaces (13). The wide surfaces (14) and the narrow surfaces (13) are arranged perpendicularly. The distance between the two narrow surfaces (13) is less than the distance between the two wide surfaces (14). The narrow surfaces (13) are arranged parallel to the moving direction of the baffle (1).

3. The protection mechanism of a dual-wheel trencher cutting head according to claim 1, wherein: The fixing component (2) includes a fixing plate (21) connected to the baffle (1) and a fixing member (22) connected to the fixing plate (21), wherein the fixing plate (21) is connected to the guide plate (31) through the fixing member (22).

4. The protection mechanism of a dual-wheel trencher head according to claim 3, wherein: The baffle (1) is perpendicular to the fixing plate (21), and the fixing plate (21) is symmetrically arranged along the center line of the baffle (1).

5. The protection mechanism of a dual-wheel trencher head according to claim 3, wherein: The baffle (1) is welded to the fixing plate (21).

6. The protective mechanism for the milling head of the twin-wheel grooving machine according to claim 3, characterized in that: The fixing plate (21) is provided with two guide surfaces (212), and the distance between the two guide surfaces (212) gradually decreases towards the bottom of the fixing plate (21).

7. The guard mechanism of a dual-wheel trencher cutting head of claim 1, wherein: The baffle (1) is provided with a lifting lug (12).

8. The guard mechanism of a dual-wheel trencher cutting head of claim 2, wherein: The contact surface (11) is arranged parallel to the moving direction of the baffle (1).

9. The guard mechanism of a dual-wheel trencher cutting head of claim 3, wherein: The fastener (22) is a bolt (221) and a nut (222) threaded onto the bolt (221), and the fixing plate (21) is provided with a through hole (211) for the threaded end of the bolt (221) to pass through.

10. The guard mechanism of a dual-wheel trencher cutting head of claim 3, wherein: Two of the fasteners (22) are connected to the fixing plate (21), and the baffle (1) is located between the two fasteners (22).

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