A milling device

Abstract

This utility model discloses a milling device, including a housing and two excavation actuators connected to a drive mechanism. Each excavation actuator includes excavating actuators coaxially arranged on both sides of the housing. The drive mechanism drives the excavating actuators to rotate. The drive mechanism includes a drive assembly, at least two hydraulic motors, and reduction mechanisms fixedly connected to the at least two hydraulic motors respectively. The drive assembly is rotatably connected to the reduction mechanisms. This utility model proposes a milling device that can improve the overall power performance of the device and reduce the risk of the excavating actuators getting stuck during operation.

Description

Technical Field

[0001] This utility model relates to the field of underground construction equipment technology, specifically to a milling device. Background Technology

[0002] Diaphragm walls are a mature underground construction structure, mainly used for the retaining structure of foundation pits, the exterior walls of building basements, etc. Their function is to prevent the external soil from shifting into the foundation pit or basement, and to prevent groundwater from shifting and flowing into the foundation pit or basement. A milling device is required during construction.

[0003] However, existing trenching devices often use two power sources to drive two digging components separately, or use one power source to drive two digging components simultaneously. As a result, the trenching devices often have insufficient power performance when facing hard geological conditions or needing rapid excavation, making it difficult to maintain a stable and efficient working state. In addition, the digging components are also prone to wheel jamming. Therefore, improvements are needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a milling device that can improve the device's power performance and reduce the risk of the excavating actuator getting stuck during milling operation.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A milling device includes a housing, a drive mechanism disposed within the housing, and two excavation execution groups connected to the drive mechanism. Each excavation execution group includes excavation actuators disposed coaxially on both sides of the housing. The drive mechanism drives the excavation actuators to rotate. The drive mechanism includes a drive assembly, at least two hydraulic motors, and a reduction mechanism fixedly connected to each of the at least two hydraulic motors. The drive assembly is rotatably connected to the reduction mechanism.

[0007] Preferably, the reduction mechanism includes two first gears, a first rotating shaft rotatably connected to the housing, a second gear and a third gear sleeved on the first rotating shaft, and a fourth gear meshing with the third gear. The two first gears are respectively fixed to the output ends of two hydraulic motors, and the two first gears mesh with the second gear respectively. The diameter of the first gear is smaller than the diameter of the second gear, the diameter of the third gear is smaller than the diameter of the second gear, and the diameter of the fourth gear is larger than the diameter of the third gear.

[0008] Preferably, the two first gears are symmetrically distributed on both sides of the second gear.

[0009] Preferably, the drive mechanism includes a fifth gear meshing with a fourth gear, a sixth gear meshing with the fifth gear, and two seventh gears respectively fixedly mounted on the second rotating shafts of the two excavation execution groups. The fifth gear meshes with one of the seventh gears, and the sixth gear meshes with the other seventh gear. The diameters of the fifth, sixth, and seventh gears are the same.

[0010] Preferably, the diameter of the fourth gear is the same as the diameter of the fifth gear.

[0011] Preferably, the housing includes a first housing and a second housing communicating with the lower opening of the first housing; a first rotating shaft is rotatably connected to the first housing, and a second rotating shaft is rotatably connected to the second housing.

[0012] Preferably, a connecting seat is also fixedly installed on the top of the first housing.

[0013] Preferably, a fixing frame is also provided on the first housing.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The trenching device provided by this utility model utilizes at least two hydraulic motors, each fixedly connected to a reduction mechanism. This allows the system to simultaneously utilize the power output of at least two motors, significantly improving the overall power performance compared to a single motor. This improvement is particularly important in applications requiring high power, such as continuous wall construction, as it ensures the trenching device maintains stable and efficient operation even under harsh geological conditions or when rapid excavation is needed. Furthermore, when two excavation actuators are connected via the same drive assembly (including two hydraulic motors, a reduction mechanism, and the drive assembly), power transmission between them is continuous. Therefore, if the excavator actuator in one excavation actuator group jams, the other excavation actuator group can still use additional power or torque from the drive assembly to help release the jamming, reducing the risk of the excavator actuator getting stuck during operation. This design enhances the reliability and stability of the trenching device, enabling it to better adapt to complex and changing working conditions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional view of the milling device;

[0018] Figure 2 A perspective view of the milling device without the first housing;

[0019] Figure 3 Another perspective view of the milling device without the first housing;

[0020] Figure 4 This is a left view of the milling device;

[0021] Figure 5 for Figure 4 A cross-sectional view along line AA.

[0022] Attached diagram labels: 1. Box body; 11. First box body; 12. Second box body; 13. Connecting seat; 14. Fixing frame;

[0023] 2. Drive mechanism; 21. Hydraulic motor; 22. Reduction mechanism; 220. First rotating shaft; 221. First gear; 222. Second gear; 223. Third gear; 224. Fourth gear; 23. Drive mechanism; 231. Fifth gear; 232. Sixth gear; 233. Seventh gear;

[0024] 3. Excavation execution group; 31. Excavation actuator; 311. Rotating wheel; 312. Excavation drill bit; 32. Second rotating shaft. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] See Figures 1 to 5 This utility model discloses a milling device, including a housing 1, a drive mechanism 2 disposed in the housing 1, and two excavation execution groups 3 connected to the drive mechanism 2. The excavation execution group 3 includes excavation actuators 31 disposed on both sides of the housing 1 in the same direction. The drive mechanism drives the excavation actuators 31 to rotate. The drive mechanism 2 includes a drive component 23, at least two hydraulic motors 21, and a reduction mechanism 22 fixedly connected to the at least two hydraulic motors 21 respectively. The drive component 23 is rotatably connected to the reduction mechanism 22.

[0029] The trenching device provided in this embodiment uses at least two hydraulic motors 21 (two in this embodiment), with a reduction mechanism 22 fixedly connected to each of the two motors (i.e., a parallel configuration of the two motors). This allows the system to utilize the power output of both motors simultaneously, significantly improving the overall power performance compared to a single motor. This improvement is particularly important in applications requiring high power, such as continuous wall construction, as it ensures the trenching device maintains stable and efficient operation even under hard geological conditions or when rapid excavation is required.

[0030] Furthermore, the parallel design of the two motors improves the reliability and stability of the milling device. Even if one motor fails or its performance degrades, the other motor can continue to operate, thus ensuring the continuity and efficiency of the construction process.

[0031] Furthermore, in this embodiment, when the two excavation execution groups 3 are connected through the same drive mechanism (including two hydraulic motors 21, a reduction mechanism 22, and a drive assembly 23), the power transmission between them is continuous. Therefore, when the excavation actuator 31 in one excavation execution group 3 becomes stuck, the other excavation execution group 3 can still use additional power or torque from its drive mechanism to help release the stuck state, thereby reducing the risk of the excavation actuator 31 getting stuck during the operation of the milling device. This design improves the reliability and stability of the milling device, enabling it to better adapt to complex and changing working conditions.

[0032] Furthermore, the reduction mechanism 22 includes two first gears 221, a first rotating shaft 220 rotatably connected to the housing 1, a second gear 222 and a third gear 223 sleeved on the first rotating shaft 220, and a fourth gear 224 meshing with the third gear 223. The two first gears 221 are respectively fixed to the output ends of the two hydraulic motors 21, and the two first gears 221 mesh with the second gear 222 respectively. The diameter of the first gear 221 is smaller than that of the second gear 222, the diameter of the third gear 223 is smaller than that of the second gear 222, and the diameter of the fourth gear 224 is larger than that of the third gear 223.

[0033] In this embodiment, the reduction mechanism 22 achieves efficient power transmission through the close meshing of multiple gears, while maintaining structural compactness, which helps reduce the size and weight of the entire transmission system. By setting the diameter of the first gear 221 to be smaller than that of the second gear 222, a significant reduction effect can be achieved. Meanwhile, the diameter of the third gear 223 is smaller than that of the second gear 222, further increasing the reduction ratio. Furthermore, the diameter of the fourth gear 224 is larger than that of the third gear 223. According to the torque amplification principle of gear transmission, this design can further increase the output torque, meeting the high torque requirements of the excavation execution group 3.

[0034] Furthermore, the two first gears 221 are symmetrically distributed on both sides of the second gear 222. This symmetrical distribution design allows for smoother meshing between the two first gears 221 and the second gear 222, reducing energy loss caused by poor meshing. This helps improve transmission efficiency, allowing more energy to be transferred to the digging actuator 3, thereby improving the overall performance of the milling device.

[0035] Furthermore, the symmetrically distributed two first gears 221 make the reduction mechanism 22 more robust and durable when subjected to large loads, reducing the risk of failure due to structural instability.

[0036] Furthermore, the drive assembly 23 includes a fifth gear 231 meshing with the fourth gear 224, a sixth gear 232 meshing with the fifth gear 231, and two seventh gears 233 respectively fixedly mounted on the second rotating shafts 32 of the two excavation execution groups 3. The fifth gear 231 meshes with one of the seventh gears 233, and the sixth gear 232 meshes with the other seventh gear 233. The fifth gear 231 and the sixth gear 232 have the same diameter.

[0037] In this embodiment, by setting the fifth gear 231 to mesh with the fourth gear 224, power is transmitted from the reduction mechanism 22 to the drive mechanism 3. Simultaneously, the fifth gear 231 meshes with a seventh gear 233, and the sixth gear 232 meshes with another seventh gear 233. Since the fifth gear 231 and the sixth gear 232 have the same diameter and the same rotational speed, they can evenly distribute power to the two excavation execution groups 3, which helps ensure that the two excavation execution groups 3 have the same performance and efficiency during operation.

[0038] Furthermore, the diameter of the fourth gear 224 is the same as that of the fifth gear 231. Gears with the same diameter have a better contact area and a more uniform load distribution when meshing, which helps to reduce wear and friction, thereby improving transmission efficiency. As a result, when power is transmitted from the reduction mechanism 22 to the drive mechanism 3, there is no additional loss of power during transmission due to the constant transmission ratio, further improving overall efficiency.

[0039] Furthermore, the housing 1 includes a first housing 11 and a second housing 12, with the second housing 12 communicating with the lower opening of the first housing 11. The first rotating shaft 220 is rotatably connected to the first housing 11, and the second rotating shaft 32 is rotatably connected to the second housing 12. A connecting seat 13 is also fixedly installed on the top of the first housing 11 for connecting the support platform.

[0040] Specifically, a first bearing 15 is fixedly installed at the connection between the first housing 11 and the first rotating shaft 220, so that the first rotating shaft 220 can rotate more smoothly relative to the first housing 11. A second bearing 16 is fixedly installed at the connection between the second housing 12 and the second rotating shaft 32, so that the second rotating shaft 32 can rotate more smoothly relative to the second housing 12.

[0041] A connecting seat 13 is also fixedly installed on the top of the first housing 11 for connecting the support platform.

[0042] Furthermore, fixing frames 14 are also provided on both sides of the first housing 11.

[0043] Furthermore, there are four excavating actuators 31, which are mounted on the second rotating shaft 32 and located at the four corners of the second housing 12.

[0044] The excavation actuator 31 includes a rotating wheel 311 and a plurality of excavation drill bits 312 (not all of which are shown in the figure). The plurality of excavation drill bits 312 are spaced apart on the surface of the rotating wheel 311, so that when the driving mechanism 3 drives the rotating wheel 311 to rotate, the excavation drill bits 312 can perform excavation.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A milling device, comprising a housing (1), a drive mechanism (2) disposed within the housing (1), and two excavation execution groups (3) connected to the drive mechanism (2), wherein the excavation execution groups (3) include excavation actuators (31) coaxially disposed on both sides of the housing (1), and the drive mechanism drives the excavation actuators (31) to rotate, characterized in that, The drive mechanism (2) includes a drive assembly (23), at least two hydraulic motors (21), and a reduction mechanism (22) fixedly connected to the at least two hydraulic motors (21), wherein the drive assembly (23) is rotatably connected to the reduction mechanism (22).

2. The milling device according to claim 1, characterized in that, The deceleration mechanism (22) includes two first gears (221), a first rotating shaft (220) rotatably connected to the housing (1), a second gear (222) and a third gear (223) sleeved on the first rotating shaft (220), and a fourth gear (224) meshing with the third gear (223). The two first gears (221) are respectively fixed to the output ends of two hydraulic motors (21), and the two first gears (221) mesh with the second gear (222). The diameter of the first gear (221) is smaller than the diameter of the second gear (222), the diameter of the third gear (223) is smaller than the diameter of the second gear (222), and the diameter of the fourth gear (224) is larger than the diameter of the third gear (223).

3. The milling device according to claim 2, characterized in that, The two first gears (221) are symmetrically distributed on both sides of the second gear (222).

4. The milling device according to claim 1, characterized in that, The drive assembly (23) includes a fifth gear (231) meshing with a fourth gear (224), a sixth gear (232) meshing with the fifth gear (231), and two seventh gears (233) fixedly mounted on the second rotating shafts (32) of the two excavation execution groups (3). The fifth gear (231) meshes with one of the seventh gears (233), and the sixth gear (232) meshes with the other seventh gear (233). The fifth gear (231), the sixth gear (232), and the seventh gear (233) have the same diameter.

5. The milling device according to claim 4, characterized in that, The diameter of the fourth gear (224) is the same as the diameter of the fifth gear (231).

6. The milling device according to claim 4, characterized in that, The box (1) includes a first box (11) and a second box (12) connected to the lower opening of the first box (11). A first rotating shaft (220) is rotatably connected to the first box (11), and a second rotating shaft (32) is rotatably connected to the second box (12).

7. The milling device according to claim 6, characterized in that, A connecting seat (13) is also fixedly installed on the top of the first housing (11).

8. The milling device according to claim 6, characterized in that, The first housing (11) is also provided with fixing frames (14) on both sides.

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