TPD construction method for rapidly removing rock by adopting sickle-shaped bush-hook

Abstract

The invention discloses a TPD construction method for rapidly removing rocks through a sickle-shaped bush-hook, and belongs to the technical field of underground diaphragm wall construction. The method comprises the steps that cutting resistance is monitored, and when the resistance exceeds a set threshold value and lasts for set time, it is judged that large-size rock exists; the grabbing action is triggered, and the transverse oil cylinder drives the rack and the chain saw type cutter box to return to the designated position; a sickle-shaped bush-hook is installed on the chain saw unit and comprises a chain plate, a middle knife tooth and outer knife teeth on the two sides of the chain plate, the knife teeth are constructed to be in a sickle shape with the sharp front portion and the wide rear portion, the front end portion is higher than the top end of the rear end portion, and a supporting groove used for supporting stones is formed. And the pushing grabbing is controlled, the transverse oil cylinder slowly moves forwards at the pushing speed in direct proportion to the real-time resistance, meanwhile, the chain saw type knife box is rotated, and the rock is clamped through a supporting groove of the sickle type hook knife and brought out of a cutting groove. According to the invention, the difficulty in removing rocks in the TPD construction process can be effectively solved, and the construction efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the field of underground continuous wall construction equipment, and in particular to a TPD construction method for quickly removing rocks by using a sickle-shaped hook cutter. Background Art

[0002] In underground continuous wall construction, the construction method for composite flexible anti-seepage walls in embankments is called the Trenchcutting Plastic Pile-Mixing Deep Wall method. This method, referred to as the TPD method, incorporates a polymer anti-seepage sheet based on the TRD method (full name: Trenchcutting Re-Mixing Deep Wall Method).

[0003] As the core equipment for underground continuous wall construction, the TPD construction machine is dedicated to high-precision and high-efficiency underground continuous wall construction. The equipment is mainly composed of four parts: the chassis system, the frame, the gantry system and the chain knife assembly: the chassis system provides overall support and walking functions for the equipment, and is usually equipped with a crawler or wheeled structure to adapt to the mobility needs of complex terrain. The frame is installed on the chassis system and serves as the main frame of the equipment, bearing the load of the gantry system and the chain knife assembly. The gantry system is fixed on the frame and is used to guide the vertical lifting movement of the chain knife assembly to ensure the accuracy of the grooving operation. The chain knife assembly achieves cutting and grooving of the continuous wall through the guidance of the gantry system, and its movement stability directly determines the construction quality.

[0004] However, when working in hard strata (such as those containing large granite and concrete blocks), traditional chainsaw-style cutters face significant technical bottlenecks. When encountering hard rocks or hard blocks with a diameter exceeding 1.5 times the cutter length, conventional cutters struggle to effectively remove the rocks from the cutting trough due to insufficient structural strength or limited gripping capacity. Rocks trapped in the trough continuously impact the cutter, causing teeth to deform, break, and even damage the cutter housing. In severe cases, construction must be interrupted and auxiliary equipment (such as cranes and crushers) must be deployed for treatment, which can take up to 10 hours or more, significantly impacting construction efficiency and increasing costs.

[0005] Therefore, there is an urgent need for a method that can quickly and effectively remove large volumes of rock during TPD construction. This method should have the ability to monitor cutting resistance in real time and efficiently grasp and remove rocks, so as to improve construction efficiency, reduce equipment loss, and ensure construction safety. Summary of the Invention

[0006] In order to solve the above problems, the object of the present invention is to provide a TPD construction method for quickly removing rocks using a sickle-shaped hook cutter.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] The technical solution adopted by the present invention to solve the technical problem is to provide a TPD construction method for quickly removing rocks using a sickle-shaped hook knife, comprising the following steps:

[0009] Monitoring cutting resistance: During the TPD grooving process, the cutting resistance of the tool is detected in real time. When the resistance exceeds the set threshold and lasts for the set time, it is determined that there is a large volume of rock;

[0010] Triggering the grabbing action: the horizontal cylinder drives the frame and the chain saw-type tool box back to the specified position;

[0011] Installing a sickle-shaped hook blade: Installing a sickle-shaped hook blade on at least one chain saw unit of a chain saw blade box; the sickle-shaped hook blade comprises: a chain plate for being fixed to the chain saw unit; a middle cutter tooth and outer cutter teeth on both sides thereof, wherein the rear ends of the middle cutter teeth and the outer cutter teeth are fixed to the chain plate; the middle cutter teeth and the outer cutter teeth are both constructed as sickle-shaped cutter teeth with a sharp front end and a wide rear end, and the height of the front end of the teeth is higher than the height of the top end of the rear end; brackets for supporting stones are formed on the upper ends of the middle cutter teeth and the outer cutter teeth;

[0012] Controlled propulsion and grabbing: The transverse cylinder slowly moves forward at a propulsion speed proportional to the real-time resistance, while rotating the chain saw-type knife box, using the bracket of the sickle-type hook knife to clamp the rock and move it out of the cutting groove.

[0013] Preferably, the upper surfaces of the middle cutting teeth and the outer cutting teeth at the bottom of the bracket are both constructed as arc-shaped surfaces.

[0014] Preferably, the length of the middle teeth is longer than that of the outer teeth, so that the front end thereof is both higher than and extends beyond the front end of the outer teeth; the curvature of the middle teeth is greater than that of the outer teeth to enhance the ability to grasp loose stones.

[0015] Preferably, the chain plate is constructed with a through hole, and the screw-fastening component passes through the through hole of the chain plate to fix it to the knife chain box.

[0016] Preferably, through holes are provided on the chain plate between the middle blade tooth and the outer blade teeth on both sides thereof, and the through holes on both sides of the middle blade tooth are arranged in a trapezoidal shape.

[0017] Preferably, the method further comprises: judging the size of the stone according to the threshold range into which the monitored cutting resistance falls, and selecting a sickle-shaped hook knife of an appropriate size.

[0018] Preferably, the retraction distance is calculated according to the formula: the length of the middle tooth×(1.2-2.0).

[0019] Preferably, the determination of setting the threshold value includes: dynamically adjusting the threshold value range according to the soil layer type, the triggering threshold value for hard rock formation is 1.5 times the normal resistance, and for soft soil formation is 1.2 times.

[0020] The beneficial effects of the present invention are as follows: by using a sickle-shaped hook knife, large stones in the cutting groove can be effectively removed. Its special sharp front and wide back structure and bracket design give it excellent gripping ability, and it can effectively handle hard stones with a diameter of more than 1.5 times the length of the tool; it avoids damage to the tool caused by continuous impact of stones, prevents deformation and breakage of the cutter teeth and damage to the tool box, and extends the service life of the equipment; there is no need to interrupt construction to call auxiliary equipment. Compared with the traditional method that takes more than 10 hours of processing time, this method can complete the stone removal in a short time, greatly improving construction efficiency; it reduces the additional costs caused by equipment damage and construction interruption, and improves the economic benefits of the project. Compared with the existing technology, the present invention achieves the rapid and efficient removal of large stones in hard strata by real-time monitoring of cutting resistance and using a specially designed sickle-shaped hook knife, solving the technical difficulties faced by traditional chain saw-type tools in such construction environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of a sickle-shaped hook knife provided in this application.

[0022] Figure 2 A side view of a sickle-shaped hook knife provided in this application.

[0023] Figure 3 This is a schematic diagram of the installation of a sickle-shaped hook knife provided in this application. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise explicitly specified.

[0027] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] like Figure 1 and 2 As shown, the present application proposes a sickle-shaped hook knife, including a chain plate 1 for fixing to a chain saw unit 9. The intermediate cutter tooth 3 and the outer cutter teeth 2 on both sides thereof, and the rear ends of the intermediate cutter tooth 3 and the outer cutter teeth 2 are fixed to the chain plate 1. The intermediate cutter tooth 3 and the outer cutter tooth 2 are both constructed as sickle-shaped cutter teeth with a sharp front and a wide rear, and the height of the front end is higher than the height of the top end of the rear end. A bracket 4 for supporting stones is formed at the upper end of the intermediate cutter tooth 3 and the outer cutter tooth 2. The bracket 4 is used to clamp the stone and bring it out of the cutting groove by the movement of the tool. Among them, the chain plate 1 is connected to the knife chain box through a through hole 6 and a screw-fixing component 7 to ensure the stability of the tool. The sickle-shaped design of the intermediate cutter tooth 3 and the outer cutter tooth 2, with the height of the front end higher than the height of the top end of the rear end, forms a bracket 4, which can guide the stone into the bracket 4 during the construction process, thereby effectively supporting and clamping the stone. The bracket 4 brings the stone out of the cutting groove by the movement of the tool, solving the problem of large stones being difficult to remove.

[0030] Specifically, the sickle-shaped design of the middle blade teeth 3 and the outer blade teeth 2 has a front end height higher than the top end height of the rear end, forming a bracket 4, which can guide the stones into the bracket 4 during the construction process, thereby effectively supporting and clamping the stones. The bracket 4 brings the stones out of the cutting groove through the movement of the tool, solving the problem that large stones are difficult to remove. Therefore, this technical solution forms a bracket 4 through the structural design of the chain plate 1, the middle blade teeth 3 and the outer blade teeth 2, which can guide the stones into the bracket 4 during the construction process, thereby effectively supporting and clamping the stones, and brings the stones out of the cutting groove through the movement of the tool, solving the problem that large stones are difficult to remove. Compared with the existing technology, this technical solution has higher structural strength and gripping ability, and can effectively improve construction efficiency and reliability.

[0031] Furthermore, the upper surfaces of the middle teeth 3 and the outer teeth 2 at the bottom of the bracket 4 are both constructed as curved surfaces 5. Specifically, the design of the curved surface 5 can be achieved in a variety of ways, such as using a circular arc, parabola, or other continuous curve shape. As a preferred embodiment, the radius of curvature of the curved surface 5 can be optimized based on the shapes and sizes of stones commonly found in actual construction to ensure that the contact area between the teeth and the stones is maximized. In addition, the surface of the curved surface 5 can be further smoothed to reduce frictional resistance when in contact with the stones, thereby more effectively guiding the stones to fall into the bracket 4. This technical solution optimizes the shape of the contact surface between the teeth and the stones by designing the upper surfaces of the middle teeth 3 and the outer teeth 2 at the bottom of the bracket 4 as curved surfaces 5. On the one hand, the design of the curved surface 5 can guide the stones to fall into the bracket 4, and on the other hand, it can better fit the surfaces of stones of various shapes, increase the contact area, and thus improve the tool's ability to grasp the stones. This design avoids the problem of insufficient contact between traditional flat cutter teeth and rocks, reduces the possibility of rock slippage, and improves the efficiency and reliability of the cutter in hard formation construction. Compared with existing technologies, this solution significantly improves the cutter's grip and construction efficiency in hard rock formations, reducing equipment damage and construction interruptions caused by rock retention.

[0032] In a specific embodiment, the length of the middle teeth 3 is longer than that of the outer teeth 2, so that their front ends are both higher than and extend beyond the front ends of the outer teeth 2. Specifically, the length of the middle teeth 3 can be longer than that of the outer teeth 2 in a variety of ways. For example, the overall length of the middle teeth 3 can be designed to be longer than that of the outer teeth 2, or the front ends of the middle teeth 3 can be extended outward, extending beyond the outer teeth 2. Furthermore, the front ends of the middle teeth 3 can be higher than the front ends of the outer teeth 2 by adjusting the mounting angle or height of the teeth. As a preferred embodiment, the front ends of the middle teeth 3 can be designed to be tilted outward to further enhance their gripping effect. This technical solution increases the length of the middle teeth 3, allowing them to engage deeper into the stone when gripping, thereby enhancing gripping. Furthermore, the fact that the front ends of the middle teeth 3 are higher than those of the outer teeth 2 helps to better secure the stone during gripping and prevent it from slipping. This design allows the middle teeth 3 and outer teeth 2 to work together more effectively when grabbing rocks, facilitating their capture within the teeth. Compared to existing technologies, this solution significantly improves the tool's grip in hard formations, reduces tool damage and construction interruptions caused by rock retention, and improves construction efficiency and reliability.

[0033] Furthermore, the curvature of the middle blade teeth 3 is greater than that of the outer blade teeth 2 to enhance the ability to grasp loose stones. Specifically, the curvature design of the middle blade teeth 3 can be achieved in a variety of ways. For example, the arc radius of the middle blade teeth 3 can be set to be smaller than the arc radius of the outer blade teeth 2, or the arc curvature of the middle blade teeth 3 can be set to be greater than the arc curvature of the outer blade teeth 2. In addition, the arc shape of the middle blade teeth 3 can be designed to be parabolic, elliptical or other suitable curve shapes to better fit the surface of the loose stones. As a preferred embodiment, the arc surface of the middle blade teeth 3 can be designed to match the surface shape of the loose stones, thereby providing a larger contact area and friction during the grasping process. In this regard, the curvature of the middle blade teeth 3 is greater than that of the outer blade teeth 2. By increasing the curvature of the middle blade teeth 3, it can better fit the surface of the stone when grasping loose stones, thereby enhancing the grasping ability. This design allows the cutter to more effectively capture loose rocks and remove them from the cutting groove, resolving the problem of traditional cutters being ineffective in grabbing loose rocks. Compared to existing technologies, the technical solution of this application offers greater efficiency and reliability in grabbing loose rocks, reduces wear and damage to the cutter, and improves construction efficiency.

[0034] like Figure 1As shown, the chain plate 1 is constructed with a through hole 6, and the screw-fastening component 7 can be passed through the through hole 6 of the chain plate 1 to fix it to the knife chain box. The through hole 6 on the chain plate 1 can be designed to be circular, oval or other suitable shapes to accommodate screw-fastening components 7 of different specifications. The diameter and number of the through holes 6 can be adjusted according to the size of the chain plate 1 and the required fixing strength. The screw-fastening component 7 can be a bolt, screw or other fastener, which is fixed to the chain plate 1 by passing through the through hole 6 and matching with the corresponding hole position on the knife chain box. In addition, the position of the through holes 6 can be distributed at the edge or center area of the chain plate 1 to ensure that the chain plate 1 is evenly stressed and avoid local stress concentration. By constructing the through holes 6 on the chain plate 1, the screw-fastening component 7 can pass through these through holes 6, thereby firmly fixing the chain plate 1 to the knife chain box. This design ensures a stable connection between the chain plate 1 and the knife chain box, improving the stability and durability of the entire tool. In this way, the chain plate 1 can remain fixed during the use of the tool, avoiding loosening that affects the performance and construction efficiency of the tool. Moreover, it can be easily assembled and disassembled, and is convenient for quick operation. Compared with the existing technology, this technical solution achieves an efficient fixing effect through a simple structural design, while reducing the difficulty of maintenance and replacement, and improving the flexibility and efficiency of construction.

[0035] Furthermore, through holes 6 are provided on the chain plate 1 between the middle tooth 3 and the outer teeth 2 on both sides thereof, and the through holes 6 on both sides of the middle tooth 3 are arranged in a trapezoidal shape. The through holes 6 arranged in a trapezoidal shape can better disperse the force, enhance the overall structural strength of the chain plate 1, and thus improve the stability and service life of the tool. Specifically, the through holes 6 arranged in a trapezoidal shape can be achieved in the following way: the positions of the through holes 6 on the chain plate 1 are symmetrically distributed along the axis of the middle tooth 3. This arrangement makes the distribution of the through holes 6 on the chain plate 1 more uniform, and can effectively disperse the stress generated by the tool during operation, avoiding deformation or breakage of the chain plate 1 caused by stress concentration. In addition, the through holes 6 arranged in a trapezoidal shape can further optimize the force distribution of the chain plate 1 by adjusting the angle and size of the trapezoid to meet the needs of different working environments.

[0036] As a preferred embodiment, the through holes 6 arranged in a trapezoidal shape can be precisely manufactured by CNC machining technology to ensure that the position and shape of the through holes 6 meet the design requirements. At the same time, the edges of the through holes 6 can be chamfered to reduce stress concentration and further improve the durability of the chain plate 1. In this regard, the through holes 6 arranged in a trapezoidal shape optimize the arrangement of the through holes 6 so that the tool can be more stable during installation, reducing the problem of unstable installation caused by the unreasonable arrangement of the through holes 6. The through holes 6 arranged in a trapezoidal shape can better disperse the force, enhance the overall structural strength of the chain plate 1, and thus improve the stability and service life of the tool. Compared with the existing technology, this design solves the technical problem of unstable tool installation caused by the unreasonable arrangement of the through holes 6 on the chain plate 1 by optimizing the arrangement of the through holes 6, and has significant practicality and innovation.

[0037] During normal TPD construction, when encountering unbreakable rocks, the teeth of a standard tool are used to pull small rocks out of the cutting groove and then to a rock collection device to be placed elsewhere. However, if a large rock with a diameter greater than 1.5 times the tool length is encountered, it is difficult to break. The continuous upward force of the tool causes the rock to loosen and fall out of the soil surrounding it. Because of its large size, the standard tool cannot pull it out of the cutting groove, causing it to constantly collide with the tool, damaging or deforming the teeth. Furthermore, the equipment will vibrate, affecting normal construction.

[0038] In order to achieve rapid rock removal, the present application implements a TPD construction method for rapid rock removal using a sickle-shaped hook cutter, comprising the following steps:

[0039] Cutting resistance monitoring: During the TPD slotting process, the tool's cutting resistance is monitored in real time. When the resistance exceeds a set threshold and persists for a set time, it is determined that a large volume of rock is present. Specifically, during the TPD slotting process, the tool's cutting resistance is monitored in real time. For example, if the system sets the normal cutting resistance range to 0.5MPa to 1.2MPa, and if the cutting resistance exceeds 1.8MPa for more than 5 seconds, the system automatically determines that a large volume of rock is present in the current cutting area and initiates the rock removal process.

[0040] Triggering the grab action: The transverse cylinder drives the frame and chain saw blade to retract to the designated position. If the system detects the presence of large rock masses, the control system automatically commands the transverse cylinder to retract the frame and chain saw blade at a speed of 0.05 m / s. The retraction distance is calculated based on the length of the intermediate teeth and ranges from 1.2 to 2.0 times that length. For example, if the intermediate teeth are 200 mm long, the retraction distance can range from 240 mm to 400 mm. During the retraction process, the chain saw blade rotates at a low speed of 30% of the normal cutting speed to avoid disturbing the surrounding soil.

[0041] The retraction distance is 1.2-2.0 times the length of the middle tooth, which can meet the installation requirements of the corresponding sickle-shaped hook knife.

[0042] Installing sickle hook knife: Figure 3 As shown, the sickle-shaped hook knife of the above structure is installed on at least one chain saw unit of the chain saw type tool box.

[0043] Specifically, after retracting into place, the operator installs a pre-prepared sickle-shaped hook knife on the chain saw unit of the chain saw type knife box. Depending on the size and hardness of the rock, sickle-shaped hook knives can be installed on multiple chain saw units, usually on 2-3 adjacent chain saw units to enhance the grabbing ability.

[0044] Controlled propulsion and grasping: The horizontal cylinder slowly advances at a speed proportional to the real-time resistance, while simultaneously rotating the chainsaw-style blade box, using the sickle-shaped hook's bracket to grip the rock and move it out of the cutting groove. Specifically, the propulsion speed of the horizontal cylinder is proportional to the real-time monitored cutting resistance, calculated as: v = k / F, where v is the propulsion speed (m / s), F is the real-time cutting resistance (MPa), and k is the proportionality factor, ranging from 0.02 to 0.05. When the cutting resistance is 2MPa, the propulsion speed is approximately 0.015m / s; when the cutting resistance increases to 3MPa, the propulsion speed automatically decreases to 0.01m / s, ensuring safe and stable rock grasping.

[0045] During the advancement process, the chainsaw-style blade box rotates at a speed of 15-20 rpm, allowing the sickle-shaped hook to contact the rock from different angles, increasing the success rate of grabbing. When the sickle-shaped hook's bracket successfully engages the rock, the system detects a steady increase in resistance. At this time, the control system automatically adjusts the propulsion direction of the horizontal cylinder, lifting it upward at a speed of 0.03m / s while maintaining a horizontal outward speed of 0.02m / s to remove the rock from the cutting groove.

[0046] Based on the threshold range that the monitored cutting resistance falls into, the size of the stone is judged and a sickle-shaped hook knife of appropriate size is selected. Specifically, the system divides rocks into three levels according to the size of the cutting resistance: small rocks (1.8-2.5MPa), medium rocks (2.5-3.5MPa), and large rocks (>3.5MPa). For small rocks, a small sickle-shaped hook knife is selected with a width of 240mm, a middle tooth length of 150mm, and an outer tooth length of 120mm; for medium-sized rocks, a medium sickle-shaped hook knife is selected with a width of 350mm, a middle tooth length of 200mm, and an outer tooth length of 160mm; for large rocks, a large sickle-shaped hook knife is selected with a width of 450mm, a middle tooth length of 250mm, and an outer tooth length of 200mm. By selecting a sickle-shaped hook knife of appropriate size, the grabbing efficiency can be improved and energy consumption can be reduced.

[0047] The determination of setting the threshold value includes: dynamically adjusting the threshold range according to the soil layer type, the trigger threshold for hard rock formations is 1.5 times the normal resistance, and for soft soil formations it is 1.2 times. Specifically, the system automatically identifies the soil layer type of the current construction area through preliminary geological survey data and real-time cutting resistance analysis. For hard rock formations (such as granite, limestone, etc.), the normal cutting resistance range is 1.0-1.5MPa, and the trigger threshold is set to 1.5 times the normal resistance, that is, 1.5-2.25MPa; for soft soil formations (such as clay, sandy soil, etc.), the normal cutting resistance range is 0.5-0.8MPa, and the trigger threshold is set to 1.2 times the normal resistance, that is, 0.6-0.96MPa. The system automatically calibrates the normal resistance baseline value every 10 minutes to adapt to changes in geological conditions.

[0048] This application utilizes a sickle-shaped hook cutter mounted on the chainsaw unit (9), leveraging its sharp, wide sickle-shaped teeth and bracket (4) to effectively grab and remove large rocks. This design enhances the tool's gripping ability in hard formations, resolving the difficulty traditional tools face in removing rocks due to insufficient structural strength or limited gripping capacity. The sickle-shaped hook cutter enables TPD underground diaphragm wall chainsaw cutters to more efficiently remove large rocks, thereby improving construction efficiency and reducing costs.

[0049] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations 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 any one or more embodiments or examples.

[0050] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A TPD construction method for quickly clearing rocks using a sickle-shaped hook cutter, characterized in that: The following steps are involved: - Monitoring cutting resistance: During the TPD grooving process, the tool's cutting resistance is detected in real time. When the resistance exceeds a set threshold and persists for a set time, it is determined that a large volume of rock is present. - Triggering the grabbing action: the horizontal cylinder drives the frame and the chain saw-type tool box back to the specified position; -Installing a sickle-type hook knife: Installing a sickle-type hook knife on at least one chain saw unit of a chain saw type tool box; the sickle-type hook knife comprises: - a chain plate (1) for being fixed to the chain saw unit (9); - a middle blade tooth (3) and outer blade teeth (2) on both sides thereof, wherein the rear ends of the middle blade tooth (3) and the outer blade teeth (2) are fixed on the chain plate (1); - The middle blade teeth (3) and the outer blade teeth (2) are both constructed as sickle-shaped blade teeth with a sharp front and a wide rear, and the height of the front end is higher than the height of the top end of the rear end. Brackets (4) for supporting stones are formed at the upper ends of the middle blade teeth (3) and the outer blade teeth (2); - Controlled propulsion and grabbing: The transverse cylinder slowly moves forward at a propulsion speed proportional to the real-time resistance, while rotating the chain saw blade box, using the bracket (4) of the sickle-shaped hook blade to clamp the rock and move it out of the cutting groove.

2. The TPD construction method according to claim 1, characterized in that: -The upper surfaces of the middle cutting teeth (3) and the outer cutting teeth (2) at the bottom of the bracket (4) are both constructed as arc-shaped surfaces (5).

3. The TPD construction method according to claim 1, characterized in that: - the length of the middle teeth (3) is longer than that of the outer teeth (2), so that the front end thereof is both higher than and extends beyond the front end of the outer teeth (2); - The curvature of the middle teeth (3) is greater than that of the outer teeth (2) to enhance the ability to grab loose stones.

4. The TPD construction method according to claim 1, characterized in that: - A through hole (6) is constructed on the chain plate (1), and a screw-fixing component (7) passes through the through hole (6) of the chain plate (1) to fix it to the knife chain box.

5. The TPD construction method according to claim 1, characterized in that: -Through holes (6) are provided on the chain plate (1) between the middle blade tooth (3) and the outer blade teeth (2) on both sides thereof, and the through holes (6) on both sides of the middle blade tooth (3) are arranged in a trapezoidal shape.

6. The TPD construction method according to claim 1, characterized in that: Also includes: - Based on the threshold range of the monitored cutting resistance, the size of the stone is determined and a sickle-shaped hook knife of appropriate size is selected.

7. The TPD construction method according to claim 1 or 2, characterized in that: - The retraction distance is calculated according to the formula: the length of the middle tooth (3)×(1.2-2.0).

8. The TPD construction method according to claim 1, characterized in that: The determination of setting the threshold includes: - Dynamically adjust the threshold range based on soil type. The trigger threshold for hard rock formations is 1.5 times the normal resistance, and for soft soil formations it is 1.2 times.

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