Pile milling machine

Abstract

The utility model relates to a pile milling machine which comprises a wheel carrier and a traveling wheel arranged on the bottom side of the wheel carrier, a rotary support is arranged on the top side of the wheel carrier, a bottom frame is rotatably connected to the rotary support, and the bottom frame can horizontally pivot relative to the wheel carrier under the action of external force; a steering operation part, a power device, a pile milling cutter head and a dragging head used for being connected with an external dragging device are sequentially arranged on the wheel frame in the advancing direction of the advancing wheels, and the power device is in transmission connection with the pile milling cutter head through a transmission assembly. According to the pile milling machine designed by the utility model, through the structural design that the rotary support is arranged at the top of the wheel carrier and is rotatably connected with the bottom frame, the bottom frame can horizontally pivot relative to the wheel carrier, and the purpose of adjusting the working direction of the facing cutter under the condition that the position of a tire is fixed is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tree stump removal equipment, and in particular to a pile milling machine. Background Technology

[0002] With the rapid development of society and the economy, the exploitation and utilization of forestry resources are increasing. To obtain more biomass resources, large amounts of trees on forest land are being felled, resulting in numerous tree stumps. These remaining stumps not only affect land reuse but also cause many inconveniences for subsequent land development. Therefore, how to efficiently remove tree stumps has become an urgent problem to be solved.

[0003] Currently, most milling machines on the market use rotating tires to achieve steering. This traditional structure has the following problems in actual use: First, it is cumbersome to operate because the tires need to be swung left and right to adjust the direction, and it is easy to damage the ground; second, the equipment has poor stability during steering, which affects the milling accuracy; third, the operator needs to frequently adjust the position, which is labor-intensive and results in a poor operating experience. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a pile milling machine that improves the convenience and safety of pile milling operations.

[0005] To achieve the above objectives, the present invention designs a pile milling machine, which includes a wheel frame and a traveling wheel disposed on the bottom side of the wheel frame. A slewing support is provided on the top side of the wheel frame, and a base frame is rotatably connected to the slewing support. The base frame can pivot horizontally relative to the wheel frame under the action of an external force. A steering operation unit, a power unit, a pile milling cutter head, and a tow head for connecting an external traction device are sequentially arranged on the wheel frame along the traveling direction of the traveling wheel. The power unit is connected to the pile milling cutter head through a transmission assembly.

[0006] Preferably, the axis of the milling cutter head is arranged parallel to the axis of the traveling wheel.

[0007] Preferably, a trailer cover is fixedly provided on the front side of the wheel frame, and a tow bar is adapted to be provided inside the trailer cover; one end of the tow bar is detachably fixed inside the trailer cover by a pin, and the other end is fixedly connected to the tow head by a bolt; a swivel tow wheel is rotatably provided at the middle position of the tow bar.

[0008] Preferably, the steering operation part includes a main body and a gripping part, wherein the main body is a sheet metal part fixed to the top side of the chassis and extending obliquely upward from the rear side of the chassis; the gripping part is pivotally connected to the top side of the main body, and the gripping part is provided with a locking handle for locking its pivot angle.

[0009] Preferably, a steering compression spring is connected between the main body and the base frame.

[0010] Preferably, the base frame is provided with a baffle on the bottom side and a disc cover on the top side. The baffle and the disc cover are used to limit the range of debris splashing generated by the milling cutter head during the milling process.

[0011] Preferably, the transmission assembly includes a belt cover and a belt drive mechanism disposed within the belt cover, and the power unit is connected to the milling cutter head via the belt drive mechanism.

[0012] Preferably, a brake plate is pivotally connected to the wheel frame, and a brake lever is pivotally connected to the steering operation unit; the brake plate has a first position abutting against the travel wheel and a second position separated from the travel wheel; a tension spring is provided on the wheel frame, and the tension spring is used to keep the brake plate in the second position; the brake lever is connected to the brake plate through a transmission mechanism and is used to drive the brake plate to switch from the second position to the first position.

[0013] Preferably, the top side of the wheel frame is provided with a limiting pin for limiting the maximum rotation angle of the base frame.

[0014] Preferably, the slewing support is a bearing.

[0015] The pile milling machine designed in this utility model features a slewing support at the top of the wheel frame, rotatably connected to the base frame. This allows the base frame to pivot horizontally relative to the wheel frame, enabling adjustment of the milling cutter's working direction while keeping the tire position fixed. Furthermore, the arrangement of the steering control unit, power unit, milling cutter, and tow bar along the travel direction on the wheel frame creates a rational component layout, ensuring not only the stability of the equipment's center of gravity but also improving the flexibility of steering operations. In addition, the baffles and disc cover on the base frame effectively control the splash range of milling debris, while the detachable tow bar structure facilitates the transportation and storage of the equipment. The overall structure is simple and compact, easy to operate, and greatly improves the efficiency and safety of pile milling operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the pile milling machine provided in the embodiments of this application.

[0017] Figure 2 This is a schematic diagram of the pile milling machine provided in an embodiment of this application from another perspective.

[0018] Figure 3 yes Figure 1 A three-dimensional exploded view.

[0019] Figure 4 This is a schematic diagram of the base frame rotating relative to the wheel frame provided in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram illustrating the change in the usage state of the tow bar provided in an embodiment of this application.

[0021] The components include: wheel frame 10, trailer cover 11, tow bar 12, swivel trailer wheel 13, limit pin 14, travel wheel 20, slewing support 30, base frame 40, baffle 41, disc cover 42, steering operation unit 50, main body 51, handle 52, locking handle 53, steering compression spring 54, power unit 60, milling cutter head 70, tractor head 80, transmission assembly 90, belt cover 91, brake plate 100, brake lever 101, and tension spring 102. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] like Figures 1 to 5 As shown, the pile milling machine described in this embodiment includes a wheel frame 10, a traveling wheel 20, a slewing support 30, a base frame 40, a steering operation unit 50, a power unit 60, a pile milling cutter head 70, and a tow head 80.

[0024] The wheel frame 10 serves as the chassis of the entire pile milling machine, providing support and a foundation for movement. In this embodiment, the wheel frame 10 is constructed of welded steel to ensure its strength and rigidity. Travel wheels 20 are located on the bottom side of the wheel frame 10, enabling it to move on the ground. A slewing support 30 is provided on the top side of the wheel frame 10 to ensure that the base frame 40 can rotate smoothly and flexibly. The base frame 40 is rotatably connected to the slewing support 30, and the base frame 40 can pivot horizontally relative to the wheel frame 10 under external force. Along the travel direction of the travel wheels 20, the wheel frame 10 is sequentially equipped with a steering operation unit 50, a power unit 60 (e.g., an engine), a pile milling cutter head 70, and a tractor head 80 for connecting an external traction device. The power unit 60 is connected to the pile milling cutter head 70 via a transmission assembly 90.

[0025] In this embodiment, the slewing support 30 is preferably a bearing. The bearing structure can withstand a large load while ensuring the smoothness and flexibility of the base frame 40's rotation. The operator only needs to apply a small force to adjust the working direction of the milling cutter head 70 via the steering operation part 50, significantly improving the convenience and efficiency of operation.

[0026] Before starting work, the tractor head 80 is first connected to an external towing device, such as a tractor or other tractor unit. Through this connection, the pile milling machine gains power and can move with the towing device. When ready to mill the piles, the power unit 60 is started, driving the milling cutter head 70 to rotate at high speed. At this time, the operator can control the working direction of the milling cutter head 70 through the steering operation unit 50. Specifically, rotating the steering operation unit 50 causes the base frame 40 to pivot horizontally relative to the wheel frame 10. Since the milling cutter head 70 is fixed to the base frame 40, the rotation of the base frame 40 changes the orientation of the milling cutter head 70, thereby adjusting the milling direction and bringing it into contact with the pile to begin milling. During milling, the operator can continuously adjust the angle of the milling cutter head 70 through the steering operation unit 50 to ensure efficient removal of the piles.

[0027] In some embodiments, such as Figure 4 , Figure 5 As shown, the axis of the milling cutter head 70 is arranged parallel to the axis of the traveling wheel 20. This parallel arrangement makes it easier to adjust the milling depth, such as by adjusting the relative height of the milling cutter head 70 to the ground.

[0028] In some embodiments, such as Figure 3 , Figure 5 As shown, a trailer cover 11 is fixedly provided on the front side of the wheel frame 10, and a tow bar 12 is adapted to be provided inside the trailer cover 11; one end of the tow bar 12 is detachably fixed inside the trailer cover 11 by a pin, and the other end is fixedly connected to the tow head 80 by a bolt; a universal trailer wheel 13 is rotatably provided in the middle position of the tow bar 12.

[0029] Specifically, one end of the tow bar 12 is detachably fixed by a pin, allowing the tow bar 12 to be inserted in either direction:

[0030] Tractor mode: When long-distance transportation is required, the operator inserts the tow bar 12 into the trailer sleeve 11 in the forward direction. At this time, the omnidirectional trailer wheels 13 face upward and do not contact the ground, avoiding interference with the connection between the tractor head 80 and the external towing device. Then, the tractor head 80 is connected to a tractor or other towing vehicle, and the pile milling machine can be easily towed to the work site.

[0031] Manual Push Mode: When the pile milling machine arrives at the work site and needs precise positioning in a confined area, the operator can pull the tow bar 12 out of the trailer sleeve 11 and install it in reverse. At this time, the swivel tow wheel 13 faces downwards, contacting the ground and bearing part of the pile milling machine's weight. The operator only needs to hold the tow bar 12 to easily push the pile milling machine like a wheelbarrow, making flexible adjustments and positioning. This mode is particularly suitable for complex terrain and confined spaces, greatly improving the pile milling machine's mobility and ease of operation.

[0032] In some embodiments, such as Figure 1 , Figure 2 As shown, the steering operation unit 50 includes a main body 51 and a gripping part 52. The main body 51 is a sheet metal part fixed to the top side of the base frame 40 and extending obliquely upward from the rear side of the base frame 40. The gripping part 52 is pivotally connected to the top side of the main body 51, and the gripping part 52 is provided with a locking handle 53 for locking its pivot angle. Specifically, the main body 51 is made of high-strength sheet metal material and is firmly fixed to the top side of the base frame 40 by welding or other methods, and extends obliquely upward from the rear side of the base frame 40 at a comfortable angle. The gripping part 52 is pivotally connected to the top side of the main body 51 by hinges or other methods, allowing the operator to freely adjust the angle of the gripping part 52 within a certain range to meet the height and operating habits of different operators. At the same time, when the operator adjusts the gripping part 52 to a suitable angle, simply pull the locking handle 53 to firmly lock the gripping part 52 at that angle, preventing it from shifting due to vibration or external force during milling, thereby ensuring the accuracy and quality of milling.

[0033] In some embodiments, such as Figure 2 As shown, a steering spring 54 connects the main body 51 and the base frame 40. In this embodiment, the steering spring 54 connects the main body 51 and the base frame 40 to provide a restoring force, so that the base frame 40 automatically returns to its initial position when the external force is removed. That is, the restoring force provided by the steering spring 54 can make the base frame 40 automatically return to its initial position (e.g., in the straight driving direction) after the operator releases the handle 52, reducing the trouble of the operator frequently manually adjusting the steering and improving the convenience of operation.

[0034] In some embodiments, such as Figure 2 , Figure 3 As shown, the base frame 40 has a baffle 41 on its bottom side and a disc cover 42 on its top side. The baffle 41 and disc cover 42 are used to limit the range of debris splashing generated by the milling cutter head 70 during the milling process. In this embodiment, the baffle 41 is typically made of wear-resistant materials such as metal or high-strength plastic, which can effectively block wood chips and gravel splashing from below. The disc cover 42 is also made of a similar material and covers the top of the milling cutter head 70, limiting debris splashing from above and the sides. In addition, the disc cover 42 not only prevents debris from splashing upwards, but also prevents rainwater and other debris from entering the milling cutter head 70, protecting the normal operation of the cutter head.

[0035] In some embodiments, such as Figure 1 , Figure 3As shown, the transmission assembly 90 includes a belt cover 91 and a belt drive mechanism disposed within the belt cover 91. The power unit 60 is connected to the milling cutter head 70 via the belt drive mechanism. The belt cover 91 is made of high-strength engineering plastic and has a semi-enclosed structure, completely covering the belt drive mechanism. The belt cover 91 is firmly fixed to the base frame 40 by bolts or other means, which not only effectively prevents personnel from contacting the high-speed rotating belt, but also prevents foreign objects such as dust and stones from entering the belt drive mechanism and affecting its normal operation.

[0036] In some embodiments, such as Figure 2 , Figure 3 As shown, a brake plate 100 is pivotally connected to the wheel frame 10, and a brake lever 101 is pivotally connected to the steering operation unit 50; the brake plate 100 has a first position abutting against the travel wheel 20 and a second position separated from the travel wheel 20; a tension spring 102 is provided on the wheel frame 10, which is used to keep the brake plate 100 in the second position; the brake lever 101 is connected to the brake plate 100 through a transmission mechanism (e.g., a linkage mechanism) and is used to drive the brake plate 100 to switch from the second position to the first position.

[0037] Thus, when braking the pile milling machine is required, the operator pulls the brake lever 101 backward. The brake lever 101, through the transmission mechanism, moves the brake plate 100 towards the travel wheel 20, causing the brake plate 100 to come into contact with the travel wheel 20, generating friction and thus braking the pile milling machine. When the brake lever 101 is released, the elastic force of the tension spring 102 pulls the brake plate 100 back to the second position, releasing the brake and allowing the pile milling machine to continue moving. In actual operation, the operator can control the movement of the pile milling machine by controlling the brake lever 101, improving operational safety and preventing excessive rotation.

[0038] In some embodiments, such as Figure 1 , Figure 2 As shown, the top side of the wheel frame 10 is provided with a limiting pin 14 for limiting the maximum rotation angle of the base frame 40. Specifically, the limiting pin 14 can be a bolt or a pin, which is fixed to the wheel frame 10. When the base frame 40 rotates to a predetermined angle, a certain part of the base frame 40 (e.g., the part connected to the main body 51) will contact the limiting pin 14, thereby preventing the base frame 40 from continuing to rotate.

[0039] The pile milling machine provided in this embodiment features a structural design where a slewing support is rotatably connected to the base frame at the top of the wheel frame. This allows the base frame to pivot horizontally relative to the wheel frame, enabling adjustment of the milling cutter head's working direction while keeping the tire position fixed. Furthermore, the arrangement of the steering control unit, power unit, milling cutter head, and tow bar along the travel direction on the wheel frame creates a rational component layout, ensuring not only the stability of the equipment's center of gravity but also improving the flexibility of steering operations. In addition, the baffles and disc cover on the base frame effectively control the splash range of milling debris, while the detachable tow bar structure facilitates the transportation and storage of the equipment. The overall structure is simple and compact, easy to operate, and significantly improves the efficiency and safety of pile milling operations.

[0040] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 according to the specific circumstances.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pile milling machine, characterized in that, The device includes a wheel frame and a traveling wheel disposed on the bottom side of the wheel frame. A slewing support is provided on the top side of the wheel frame, and a base frame is rotatably connected to the slewing support. The base frame can pivot horizontally relative to the wheel frame under the action of an external force. A steering operation unit, a power unit, a milling cutter head, and a tractor for connecting an external traction device are sequentially arranged on the wheel frame along the traveling direction of the traveling wheel. The power unit is connected to the milling cutter head through a transmission assembly.

2. The pile milling machine according to claim 1, characterized in that, The axis of the milling cutter head is set parallel to the axis of the traveling wheel.

3. The pile milling machine according to claim 1, characterized in that, A trailer cover is fixedly provided on the front side of the wheel frame, and a tow bar is adapted to be installed inside the trailer cover; one end of the tow bar is detachably fixed inside the trailer cover by a pin, and the other end is fixedly connected to the tow head by a bolt; a swivel tow wheel is rotatably provided in the middle position of the tow bar.

4. The pile milling machine according to claim 1, characterized in that, The steering operation unit includes a main body and a gripping part, wherein the main body is a sheet metal part fixed to the top side of the chassis and extending obliquely upward from the rear side of the chassis; the gripping part is pivotally connected to the top side of the main body, and the gripping part is provided with a locking handle for locking its pivot angle.

5. The pile milling machine according to claim 4, characterized in that, A steering spring connects the main body to the base frame.

6. The pile milling machine according to claim 1, characterized in that, The base frame is provided with a baffle on the bottom side and a disc cover on the top side. The baffle and the disc cover are used to limit the range of debris splashing generated by the milling cutter head during the milling process.

7. The pile milling machine according to claim 1, characterized in that, The transmission assembly includes a belt cover and a belt drive mechanism disposed within the belt cover, and the power unit is connected to the milling cutter head via the belt drive mechanism.

8. The pile milling machine according to claim 1, characterized in that, A brake plate is pivotally connected to the wheel frame, and a brake lever is pivotally connected to the steering operation unit; the brake plate has a first position abutting against the travel wheel and a second position separated from the travel wheel; a tension spring is provided on the wheel frame, and the tension spring is used to keep the brake plate in the second position; the brake lever is connected to the brake plate through a transmission mechanism, and is used to drive the brake plate to switch from the second position to the first position.

9. The pile milling machine according to claim 1, characterized in that, The top side of the wheel frame is provided with a limiting pin to limit the maximum rotation angle of the base frame.

10. The pile milling machine according to claim 1, characterized in that, The slewing support is a bearing.

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