Double-wheel milling and stirring drill machine lifting mechanism for underground continuous wall construction and double-wheel milling and stirring drill machine

Abstract

The application discloses a double-wheel milling and stirring drilling machine lifting mechanism for underground continuous wall construction and a double-wheel milling and stirring drilling machine, and relates to the field of underground continuous wall construction equipment, which comprises a winch, a steel wire rope, a mast, an A pulley, a B pulley, an A sliding frame and a movable pulley, the A pulley and the B pulley are both installed on the mast, one side of the A sliding frame is slidably connected with the mast, the movable pulley is installed on the A sliding frame, the A sliding frame is connected with a drill rod, and the application further comprises a B sliding frame, a B guide and an A limiting piece, and one side of the B sliding frame is slidably connected with the mast. The B sliding frame and the A limiting piece are arranged, the inherent contradiction that the lifting force and the operation speed cannot be compatible in the traditional lifting mechanism is solved, the auxiliary time of the no-load operation is greatly shortened, the drill tool can pass through the unstable stratum such as loose sand layer and water-rich pebble layer quickly, the static time of the drill tool in the hole is greatly reduced, the hole collapse risk is obviously reduced, and the hole forming rate and the construction efficiency are improved.

Description

Technical Field

[0001] This invention relates to underground continuous wall construction equipment technology, specifically to the lifting mechanism of a twin-wheel milling and drilling machine for underground continuous wall construction and the twin-wheel milling and drilling machine itself. Background Technology

[0002] Chinese invention patent CN110748308B discloses a lifting mechanism for a double-wheel milling mixer and a double-wheel milling mixer. This lifting mechanism employs a double-sided hydraulic cylinder arrangement in its clamping section, effectively ensuring the drill rod remains centered during clamping and preventing lateral deviation. Furthermore, the rigid cylinders prevent lateral swaying of the drill rod, thus ensuring stability and safety during lifting and lowering. Additionally, when a single wire rope of the main winch is wound around the movable pulley... The lifting force on the pulley is twice the tension of a single rope. Therefore, adding a movable pulley to the lifting mechanism increases the lifting force while keeping the wire rope tension constant, ensuring that the drill rod can still be lifted in dangerous situations, preventing the drill rod and milling device from being buried. However, to ensure efficiency, the number of pulleys is limited to one. Simultaneously, by installing rollers in both the upper and lower directions of the lifting frame, two sets of rollers provide better guidance than a single set. The smaller gap between the rollers and the drill rod reduces drill rod deflection and effectively prevents contact between the drill rod and the lifting frame, avoiding structural wear and thus extending service life. This helps reduce drill rod swaying during the lowering and lifting of the dual-wheel milling head, reducing the possibility of continuous wall deflection and resulting in better wall quality.

[0003] This application increases the lifting force of the hoisting mechanism by setting up a movable pulley, thereby increasing the lifting force of the hoisting mechanism while keeping the wire rope tension constant. However, if the lifting force of the hoisting mechanism is doubled, the lifting / lowering speed of the drill rod will inevitably be halved. In the construction of diaphragm walls using a twin-wheel milling and stirring drill, there will be scenarios requiring a large lifting force, such as milling hard rocks or deep operations in moderately weathered or slightly weathered rocks. At the same time, there will also be situations requiring rapid passage through unstable strata such as unloaded operation and loose sand layers and water-rich pebble layers. In strata prone to borehole collapse, such as loose sand layers and water-rich pebble layers, the longer the drill bit remains stationary in the hole, the higher the risk of borehole collapse. Under such conditions, the drill rod needs to have a large lifting / lowering speed. The solution proposed in this application cannot adapt to these different operating scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting mechanism for a twin-wheel milling and stirring drilling machine and a twin-wheel milling and stirring drilling machine for the construction of underground continuous walls. This solves the problem that the existing twin-wheel milling and stirring drilling machine lifting mechanism is difficult to adapt to the working conditions in easily collapsed strata such as loose sand layers and water-rich pebble layers, which require rapid passage to reduce the static time in the hole and reduce the risk of hole collapse. It also addresses the contradiction between lifting force and working speed, making it difficult to meet the needs of different working scenarios.

[0005] To achieve the above objectives, the present invention provides a lifting mechanism for a twin-wheel milling and stirring drill for diaphragm wall construction, comprising a winch, a wire rope, a mast, an A pulley, a B pulley, an A sliding frame, and a movable pulley. Both the A pulley and the B pulley are mounted on the mast. One side of the A sliding frame is slidably connected to the mast. The movable pulley is mounted on the A sliding frame. The A sliding frame is connected to the drill rod. The invention also includes a B sliding frame, a B guide member, and an A limiting member.

[0006] B. The sliding frame is slidably connected to the mast on one side.

[0007] Guide component B is mounted on sliding frame B and is used to limit the movement of the drill pipe relative to sliding frame B along the length of the drill pipe;

[0008] One end of the wire rope is wound around the take-up roller of the winch, and the other end of the wire rope passes over pulley A, pulley B and movable pulley respectively and is connected to sliding frame B.

[0009] Limiting component A is installed on sliding frame B. Limiting component A has a first state and a second state:

[0010] When limiter A is in the first state, the drill rod can move relative to sliding frame B along the length of the drill rod, and limiter A prevents sliding frame B from moving relative to the mast along the length of the drill rod.

[0011] When limiter A is in the second state, sliding frame B can move relative to the mast along the length of the drill pipe, while limiter A prevents sliding frame B from moving relative to the drill pipe along the length of the drill pipe.

[0012] Furthermore, the A limiting component includes an A pin, an A moving drive component, and two A limiting plates. Multiple A slots are provided on the A limiting plates, distributed along the length of the A limiting plates. One A limiting plate is fixedly installed on the mast, and the other A limiting plate is fixedly installed on the drill rod. An A through hole is provided on the B sliding frame, and the A pin is slidably installed in the A through hole. The A pin can move along its length until one end is inserted into an A slot on one of the A limiting plates, and the other end of the A pin disengages from an A slot on the other A limiting plate. The outer side of the A pin is connected to the A moving drive component via a bracket, and the A moving drive component is used to drive the A pin to move along its length.

[0013] Furthermore, the B guide component includes two sets of A guide wheel sets and two sets of B guide wheel sets. The two A guide wheel sets and the two B guide wheel sets are symmetrically installed on the B sliding frame and respectively correspond to and are close to the four circumferential sides of the drill pipe. The A guide wheel set includes two A guide wheels, and the two end shafts of the two A guide wheels are rotatably connected to the B sliding frame. The B guide wheel set includes four B guide wheels, and the two end shafts of the four B guide wheels are rotatably connected to the B sliding frame.

[0014] Furthermore, the sliding frame A is provided with a channel A through which the drill rod passes, and one end of the drill rod passes through the channel A and is fixedly connected to the inner wall of the channel A.

[0015] Furthermore, the A sliding frame is provided with a B channel for the drill rod to pass through, and the inner wall of the B channel is provided with an A guide member. The A guide member is used to restrict the movement of the drill rod relative to the A sliding frame along the length direction of the drill rod. A B limiting member is installed on the A sliding frame, and the B limiting member is used to prevent the drill rod from moving relative to the A sliding frame along the length direction of the drill rod.

[0016] Furthermore, the B limiting component includes a B pin, a B moving drive, a B limiting plate, and multiple B slots opened on the B limiting plate. The multiple B slots are distributed along the length direction of the B limiting plate. A sliding frame has a B through hole. The B pin is slidably installed in the B through hole. The B pin can be moved to partially insert into one of the B slots. One end of the B pin is connected to the B moving drive for driving its movement to insert into or disengage from the B slot.

[0017] Furthermore, the A guide component includes two sets of C guide wheel sets and two sets of D guide wheel sets. The two C guide wheel sets and the two D guide wheel sets are symmetrically installed on the A sliding frame and respectively correspond to and are close to the four circumferential sides of the drill pipe. The C guide wheel set includes two C guide wheels, and the two ends of the two C guide wheels are rotatably connected to the A sliding frame. The D guide wheel set includes four D guide wheels, and the two ends of the four D guide wheels are rotatably connected to the A sliding frame.

[0018] Furthermore, a guide frame is provided, one side of which is fixedly connected to the mast. A C-guide component is provided on the guide frame, which is used to restrict the movement of the drill pipe along the length of the drill pipe.

[0019] Furthermore, the C guide component includes two sets of E guide wheel sets and two sets of F guide wheel sets. The two E guide wheel sets and the two F guide wheel sets are symmetrically installed on the guide frame and respectively correspond to and are close to the four circumferential sides of the drill pipe. The E guide wheel set includes two E guide wheels, and the two ends of the two E guide wheels are rotatably connected to the guide frame. The F guide wheel set includes four F guide wheels, and the two ends of the four F guide wheels are rotatably connected to the guide frame.

[0020] Another aspect of the present invention provides a twin-wheel milling and stirring drill, including a traveling mechanism, a milling mechanism, a power system and a control system, and also includes a lifting mechanism for a twin-wheel milling and stirring drill for diaphragm wall construction as described above, wherein the winch and the mast are both mounted on the traveling mechanism and the milling mechanism is mounted on the bottom end of the drill rod.

[0021] Compared with existing technologies, the lifting mechanism and the dual-wheel milling and stirring drill for diaphragm wall construction provided by this invention solve the inherent contradiction between lifting force and operating speed in traditional lifting mechanisms through the B sliding frame and A limiting component. When the A limiting component is in the first state, the moving pulley is active, and the lifting mechanism provides a lifting force approximately twice that of a single rope, which is suitable for milling hard rock and deep operations. It can effectively overcome huge resistance and fundamentally avoid major accidents such as drill jamming, stuck drill, or even drill burial caused by insufficient lifting force, thus greatly ensuring construction safety. When the A limiting component is in the second state, it is equivalent to the wire rope directly pulling the drill bit, doubling the lifting speed. This not only significantly shortens the auxiliary time of no-load operation but also enables the drill bit to pass quickly through unstable strata such as loose sand layers and water-rich pebble layers, greatly reducing the static time of the drill bit in the hole, thereby significantly reducing the risk of hole collapse and improving the hole formation rate and construction efficiency.

[0022] By setting up guide frames, A guide components, B guide components and C guide components, the circumferential direction of the drill rod is limited, and the sliding friction is completely converted into rolling friction. This ensures that the drill rod can maintain extremely high motion accuracy and stability under huge loads and double speed operation, effectively suppressing swaying and wobbling, improving the verticality of the trench and protecting the equipment.

[0023] The B limiting component provides an adjustable locking mechanism between the drill pipe and the A sliding frame. The B moving drive component drives the B pin to insert into or disengage from the slot of the B limiting plate on the drill pipe, achieving rigid connection and separation of power transmission. Due to the multiple distribution characteristics of its slots, it has the ability to lock at different height positions of the drill pipe. Thus, in special working conditions where equipment maintenance or rigid connection of the A sliding frame and the drill pipe is required to enhance the overall rigidity of the system, the absolute reliability of power transmission and operational safety are ensured. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of a first partial three-dimensional structure provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of a first partial cross-sectional structure provided in an embodiment of the present invention;

[0028] Figure 4 Provided for embodiments of the present invention Figure 3 Enlarged diagram of point A in the diagram;

[0029] Figure 5 This is a schematic diagram of a second partial cross-sectional structure provided in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of a third partial cross-sectional structure provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the fourth partial cross-sectional structure provided in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of a second partial three-dimensional structure provided in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 101. Winch; 102. Wire rope; 103. Mast; 104. A pulley; 105. B pulley; 106. A sliding frame; 107. Movable pulley; 108. C guide wheel; 109. D guide wheel; 200. B sliding frame; 300. A limiting component; 301. A pin; 302. A moving drive component; 303. A limiting plate; 304. A slot; 311. A guide wheel; 312. B guide wheel; 400. Drill rod; 500. B limiting component; 501. B pin; 502. B moving drive component; 503. B limiting plate; 504. B slot; 600. Guide frame; 601. E guide wheel; 602. F guide wheel. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] As attached Figure 1 To be continued Figure 8As shown: This invention provides a lifting mechanism for a twin-wheel milling and stirring drill for diaphragm wall construction, including a winch 101, a wire rope 102, a mast 103, an A pulley 104, a B pulley 105, an A sliding frame 106, and a movable pulley 107. Both the A pulley 104 and B pulley 105 are mounted on the mast 103 and can be rotatably mounted on the mast 103 via bearings. One side of the A sliding frame 106 is slidably connected to the mast 103. The movable pulley 107 is mounted on the A sliding frame 106 and can also be rotatably mounted on the A sliding frame 106 via bearings. The A sliding frame 106 is connected to the drill rod 400. The invention also includes a B sliding frame 200, a B guide member, and an A limiting member 300.

[0038] B. The sliding frame 200 is slidably connected to the mast 103 on one side.

[0039] Guide component B is mounted on sliding frame B 200 and is used to limit the movement of drill pipe 400 relative to sliding frame B 200 along the length of drill pipe 400;

[0040] One end of the wire rope 102 is wound around the take-up roller of the winch 101, and the other end of the wire rope 102 passes over pulley A 104, pulley B 105 and movable pulley 107 respectively and is connected to sliding frame B 200.

[0041] Limiting element 300 is mounted on sliding frame B 200. Limiting element 300 has a first state and a second state:

[0042] When the A limiting member 300 is in the first state, the drill rod 400 can move relative to the B sliding frame 200 along the length direction of the drill rod 400, while the A limiting member 300 prevents the B sliding frame 200 from moving relative to the mast 103 along the length direction of the drill rod 400.

[0043] When the A limiting member 300 is in the second state, the B sliding frame 200 can move relative to the mast 103 along the length of the drill rod 400, while the A limiting member 300 prevents the B sliding frame 200 from moving relative to the drill rod 400 along the length of the drill rod 400.

[0044] Since the maximum output power P of the winch's drive motor (or hydraulic motor) is rated (P=Txω, where T is the output torque and ω is the angular velocity), to significantly increase the wire rope's winding and unwinding speed (i.e., increase ω), the maximum tension T that the system can provide must decrease proportionally, provided that the power P remains constant. Therefore, existing technologies increase the lifting force of the hoisting mechanism by setting up a movable pulley, thus increasing the lifting force of the hoisting mechanism while keeping the wire rope tension constant. However, if the lifting force of the hoisting mechanism doubles, the lifting / lowering speed of the drill rod will inevitably... Halving the drilling force, in the construction of underground continuous walls using twin-wheel milling and stirring drilling rigs, will not only encounter scenarios requiring greater lifting force for milling hard rocks such as moderately weathered and slightly weathered rocks or deep operations, but will also encounter situations requiring rapid passage through unstable strata such as unloaded operation and loose sand layers and water-rich pebble layers. In strata prone to borehole collapse, such as loose sand layers and water-rich pebble layers, the longer the drill bit remains stationary in the hole, the higher the risk of borehole collapse. Under such conditions, the drill rod needs to have a greater lifting / lowering speed, which presents a contradiction between lifting force and operating speed, making it difficult to meet the needs of different operating scenarios.

[0045] Therefore, this application incorporates a B sliding frame 200 to adjust the operating status of the lifting mechanism according to specific working conditions, as detailed below:

[0046] When the A limiting component 300 is in the first state, the B sliding frame 200 cannot move relative to the mast 103 along the length of the drill rod 400, that is, the end of the wire rope 102 is fixed. At this time, when the winch 101 retracts or releases the wire rope 102, the wire rope 102 drives the A sliding frame 106 to move through the movable pulley 107, and the A sliding frame 106 drives the drill rod 400 to move. At this time, under the action of the movable pulley 107, labor saving is achieved, which is suitable for scenarios such as milling hard rocks such as moderately weathered rocks and slightly weathered rocks or deep operations. In this scenario, the drill rod 400 and the slurry are heavy and the milling head resistance is extremely high. It can ensure that the equipment has sufficient lifting force to overcome the resistance and avoid drill jamming, drill sticking or even drill burial accidents caused by insufficient lifting force.

[0047] Although the first state of the A limiting component 300 can achieve the above-mentioned effects of saving effort, in actual working conditions, there are still situations where the drill rod 400 is lifted / lowered at half the speed when the A limiting component 300 is in the first state, which is not conducive to the above-mentioned situations that require rapid passage. Therefore, the A limiting component 300 can be switched to the second state. In the second state, the B sliding frame 200 cannot move relative to the drill rod 400 along the length of the drill rod 400. The distance between the B sliding frame 200 and the A sliding frame 106 is fixed, and the B sliding frame 200 can move relative to the mast 103. At this time, the movable pulley 107 does not work, which is equivalent to the end of the wire rope 102 being directly connected to the drill rod 400. At this time, compared with the first state of the A limiting component 300, the lifting / lowering speed of the drill rod 400 is doubled, which can adapt to different working conditions and effectively improve the wall formation efficiency.

[0048] In one embodiment of the present invention, the A limiting member 300 includes an A pin 301, an A moving drive member 302, and two A limiting plates 303. Multiple A slots 304 are provided on the A limiting plates 303, distributed along the length of the A limiting plates 303. One A limiting plate 303 is fixedly mounted on the mast 103, and the other A limiting plate 303 is fixedly mounted on the drill rod 400. An A through hole is provided on the B sliding frame 200, and the A pin 301 is slidably mounted in the A through hole, allowing the A pin 301 to move along its length to one end for insertion. The pin 301 is inserted into one of the slots 304 on one of the A limiting plates 303, and the other end of the pin 301 is disengaged from the slot 304 on the other A limiting plate 303. The outer side of the pin 301 is connected to the moving drive 302 via a bracket. The moving drive 302 is used to drive the pin 301 to move along the length of the pin 301. The moving drive 302 can be a hydraulic cylinder or a pneumatic cylinder. The moving end of the moving drive 302 is fixedly connected to the pin 301 via a bracket. The fixed end of the moving drive 302 is fixedly connected to the sliding frame 200.

[0049] Specifically, when the A limiting member 300 needs to be in the first state, the moving end of the A moving drive member 302 drives the A pin 301 to move towards the A limiting plate 303 on the mast 103 side until its end is fully inserted into an A slot 304 of the A limiting plate 303. At the same time, the other end of the A pin 301 is completely withdrawn from the A slot 304 of the A limiting plate 303 on the drill rod 400 side. At this time, the B sliding frame 200 can no longer move relative to the mast 103, and the B sliding frame 200 can move relative to the drill rod 400 along the length of the drill rod 400. In this state, the winch 101 pulls the wire rope 102, and the force is transmitted through the A pulley 104, the B pulley 105, and the movable pulley 107, and finally acts on the A sliding frame 106 and the drill rod 400. Due to the presence of the movable pulley 107, the lifting mechanism provides about twice the pulling force.

[0050] When the A limiting member 300 needs to be in the second state, the moving end of the A moving drive member 302 drives the A pin 301 to move towards the A limiting plate 303 on the drill rod 400 side until its end is fully inserted into one of the A slots 304 of the A limiting plate 303. At the same time, the other end of the A pin 301 is completely withdrawn from the A slot 304 of the A limiting plate 303 on the mast 103 side. At this time, the B sliding frame 200 and the drill rod 400 become a whole that can move synchronously, and the B sliding frame 200 and the mast 103 are unlocked. In this state, the winch 101 pulls the wire rope 102, and the force is directly applied to the B sliding frame 200, thereby directly lifting or lowering the drill rod 400, eliminating the force-saving effect of the movable pulley 107, and increasing the speed by 100%.

[0051] Among them, pin A 301 can be forged from high-strength alloy steel (such as 42CrMo) and tempered, while limiting plate A 303 can be cut from thick steel plate (such as Q690D high-strength steel). The slot A 304 can be in the shape of a round hole, U-shaped groove, or flared mouth. The internal working surface of slot A 304 needs to be precision machined to ensure a good fit with pin A 301.

[0052] In this embodiment, two A-pins 301 can also be used. The two A-pins 301 are respectively connected to two A-moving drive units 302. The two A-pins 301 correspond one-to-one with the two A-limiting plates 303. By controlling the two A-moving drive units 302, the two A-pins 301 can be inserted into / disengaged from the corresponding A-slots 304 on the A-limiting plates 303.

[0053] In one embodiment of the present invention, the B guide member includes two sets of A guide wheel groups and two sets of B guide wheel groups. The two A guide wheel groups and the two B guide wheel groups are symmetrically installed on the B sliding frame 200 and respectively correspond to and are close to the four circumferential sides of the drill rod 400. The A guide wheel group includes two A guide wheels 311, and the two ends of the two A guide wheels 311 are rotatably connected to the B sliding frame 200. The B guide wheel group includes four B guide wheels 312, and the two ends of the four B guide wheels 312 are rotatably connected to the B sliding frame 200.

[0054] Specifically, the two A guide wheel sets and the two B guide wheel sets are respectively attached to the four circumferential sides of the drill rod 400, forming rolling constraints on the four circumferential sides of the drill rod 400. When the drill rod 400 needs to move relative to the B sliding frame 200, or when the B sliding frame 200 and the drill rod 400 are locked together and move synchronously, the huge lateral force and sway tendency generated by the relative movement or joint movement between the drill rod 400 and the B sliding frame 200 are transformed into low-resistance rolling friction by the A guide wheel 311 and the B guide wheel 312. This reduces the resistance to the movement of the drill rod 400 and prevents hole wall collision and reduced trenching accuracy caused by the violent shaking and swaying of the drill rod 400, thus providing stability and guidance for the entire drilling and wall-forming process.

[0055] In one embodiment of the present invention, the A sliding frame 106 is provided with an A channel through which the drill rod 400 passes, and one end of the drill rod 400 passes through the A channel and is fixedly connected to the inner wall of the A channel (not shown in the figure).

[0056] Specifically, bolts or other methods can be used to fix the sliding frame A 106 to the drill rod 400 to ensure the stability of the connection between the drill rod 400 and the sliding frame A 106.

[0057] In one embodiment of the present invention, the A sliding frame 106 is provided with a B channel for the drill rod 400 to pass through, and the inner wall of the B channel is provided with an A guide member. The A guide member is used to restrict the drill rod 400 from moving relative to the A sliding frame 106 along the length direction of the drill rod 400. A B limiting member 500 is installed on the A sliding frame 106. The B limiting member 500 is used to prevent the drill rod 400 from moving relative to the A sliding frame 106 along the length direction of the drill rod 400.

[0058] In this embodiment, the B limiting member 500 includes a B pin 501, a B moving drive member 502, a B limiting plate 503, and a plurality of B slots 504 opened on the B limiting plate 503. The plurality of B slots 504 are distributed along the length direction of the B limiting plate 503. A sliding frame 106 is provided with a B through hole. The B pin 501 is slidably installed in the B through hole. The B pin 501 can be moved to partially insert into one of the B slots 504. One end of the B pin 501 is connected to the B moving drive member 502 for driving its movement to insert into or detach from the B slot 504. The B moving drive member 502 is a hydraulic cylinder or a telescopic cylinder. The moving end of the B moving drive member 502 is fixedly connected to the B pin 501, and the fixed end of the B moving drive member 502 is fixedly connected to the A sliding frame 106.

[0059] Specifically, in order to further realize the connection and relative position adjustment between the drill rod 400 and the sliding frame A 106, a limiting member B 500 is provided. The B moving drive member 502 drives the B pin 501 to move horizontally, so that it can be selectively inserted into or disengaged from any of the B slots 504 of the limiting plate 503 fixed on the drill rod 400. When the B pin 501 is inserted, no relative displacement can occur between the drill rod 400 and the sliding frame A 106, and the power can be fully transmitted. Since there are multiple B slots 504 and they are distributed along the length of the drill rod 400, the relative position adjustment between the drill rod 400 and the sliding frame A 106 can be realized, which is suitable for scenarios such as fixing the drill rod 400 when changing the milling head.

[0060] Among them, the B limiting plate 503 can be integrally set with the A limiting plate 303 on one side, and the B slot 504 and the A slot 304 are the same in size and shape, and have the same distribution pattern (distribution distance).

[0061] In one embodiment of the present invention, the A guide member includes two sets of C guide wheel groups and two sets of D guide wheel groups. The two C guide wheel groups and the two D guide wheel groups are symmetrically installed on the A sliding frame 106 and respectively correspond to and are close to the four circumferential sides of the drill rod 400. The C guide wheel group includes two C guide wheels 108, and the two ends of the two C guide wheels 108 are rotatably connected to the A sliding frame 106. The D guide wheel group includes four D guide wheels 109, and the two ends of the four D guide wheels 109 are rotatably connected to the A sliding frame 106.

[0062] Specifically, the structure of guide component A is the same as that of guide component B. A guide channel is constructed inside the sliding frame 106 of guide component A through two sets of guide wheel sets C and two sets of guide wheel sets D. The four guide wheels 108 of guide wheel sets C apply constraints from the left and right sides (or front and rear sides) of drill rod 400, while the eight guide wheels 109 of guide wheel sets D (four in each set) provide support from the other two sides perpendicular to them. Both guide wheels 108 and D are rotatably connected to the sliding frame 106 of guide component A through their pivots. When drill rod 400 moves, guide wheels 108 and D roll freely, converting sliding friction into rolling friction, reducing power loss and contact surface wear, and improving the operational stability of the mechanism.

[0063] In one embodiment of the present invention, a guide frame 600 is also provided. One side of the guide frame 600 is fixedly connected to the mast 103. A C-guide member is provided on the guide frame 600. The C-guide member is used to restrict the drill rod 400 from moving along the length direction of the drill rod 400.

[0064] In this embodiment, the C guide component includes two sets of E guide wheel sets and two sets of F guide wheel sets. The two E guide wheel sets and the two F guide wheel sets are symmetrically installed on the guide frame 600 and respectively correspond to and are close to the four circumferential sides of the drill rod 400. The E guide wheel set includes two E guide wheels 601, and the two ends of the two E guide wheels 601 are rotatably connected to the guide frame 600. The F guide wheel set includes four F guide wheels 602, and the two ends of the four F guide wheels 602 are rotatably connected to the guide frame 600.

[0065] Specifically, the guide frame 600 is located at the bottom of the mast 103, and the structure of the C guide component is the same as that of the B guide component, in order to further improve the stability of the drill pipe 400 when it moves.

[0066] In one embodiment of the present invention, an absolute encoder or laser rangefinder is installed on the mast 103 or the B sliding frame 200 to accurately detect the absolute height position of the B sliding frame 200 relative to the mast 103 in real time.

[0067] In one embodiment of the invention, an industrial camera or laser proximity sensor is mounted on the B sliding bracket 200 and aligned with the A limiting plate 303 and the B limiting plate 503. Image recognition or distance measurement is used to visually confirm whether the A pin 301 is precisely aligned with the target A slot 304 and the B pin 501 is precisely aligned with the target B slot 504.

[0068] In one embodiment of the present invention, a corresponding control unit can be set up for use. The control unit can be an industry-standard programmable logic controller (PLC), an embedded microcontroller (MCU), or other dedicated controller. It is connected to the electrical actuators (such as the solenoid valves or servo drivers of A motion drive 302 and B motion drive 502) and sensing and detection elements (such as the pin position detection switch and the height encoder) involved in this application through pre-laid electrical lines, so as to control the opening and closing and operation sequence of each electrical component according to the preset logic program.

[0069] As one feasible implementation, this embodiment provides a control unit solution based on an embedded microcontroller unit (MCU). This MCU is a highly integrated single-chip computer system, internally containing a central processing unit (CPU), memory (ROM / RAM), timer / counter, and various input / output interfaces (such as GPIO, ADC, PWM, etc.). It receives feedback signals from sensors, processes them through internal programs, and outputs control signals to the hydraulic proportional valve or motor driver, thereby precisely controlling the actions of the A moving drive component 302 and the B moving drive component 502, achieving automatic switching and closed-loop control of the working state of the A limit component 300. This control unit has the advantages of small size, low cost, high reliability, and easy embedding into equipment, making it particularly suitable for the distributed control requirements of such multi-condition adaptive switching systems. The operating logic of this control unit includes, but is not limited to: selecting signals (such as input from the operation panel or instructions from the host computer) or autonomous judgment by sensors (such as load detection) based on the construction conditions, automatically deciding and switching to "labor-saving mode" or "high-efficiency mode"; controlling the A moving drive component 302 to drive the A pin 301 to accurately insert into the corresponding A slot 304 of the target A limiting plate 303, and confirming the locking status through sensors; coordinating the action sequence of the winch 101, the sliding frame and the limiting component during the entire drilling cycle to achieve automated operation, and having status monitoring and fault diagnosis functions.

[0070] Example 2

[0071] As attached Figure 1 To be continued Figure 8 As shown, another aspect of the present invention provides a twin-wheel milling and stirring drill, including a traveling mechanism, a milling mechanism, a power system and a control system, and also includes the lifting mechanism of the twin-wheel milling and stirring drill for diaphragm wall construction in Embodiment 1. The winch 101 and the mast 103 are both installed on the traveling mechanism, and the milling mechanism is installed at the bottom end of the drill rod 400.

[0072] The winch 101 is fixedly mounted on a dedicated mounting platform of the traveling mechanism via high-strength anti-torsion bolts to its base. This platform is typically locally reinforced and vibration-damped to withstand the enormous torque and vibration generated during winch operation. The power system transmits the output power of the prime mover (diesel engine or electric motor) to the hydraulic pump unit and the mechanical drive shaft via a transfer case. The hydraulic pump unit is connected to a multi-way directional valve group controlling various actuators (such as the hydraulic cylinders of A moving drive component 302 and B moving drive component 502, clamping cylinders, and mast luffing cylinders) via high-pressure hydraulic oil pipes, providing power for all hydraulic actions of the lifting mechanism. The mechanical drive shaft is connected to the input end of the winch 101 via a universal coupling, providing it with lifting power.

[0073] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double-wheel milling and stirring drill machine lifting mechanism for diaphragm wall construction, comprising a winch (101), a steel wire rope (102), a mast (103), an A pulley (104), a B pulley (105), an A sliding frame (106) and a movable pulley (107), the A pulley (104) and the B pulley (105) are both installed on the mast (103), the A sliding frame (106) is slidably connected to one side of the mast (103), and the movable pulley (107) is installed on the A sliding frame (106), characterized in that, the A sliding frame (106) is connected to a drill rod (400), and further comprising: a B sliding frame (200) slidably connected to one side of the mast (103); a B guide installed on the B sliding frame (200) and used to limit the movement of the drill rod (400) relative to the B sliding frame (200) along the length direction of the drill rod (400); one end of the steel wire rope (102) is wound on a winding roller of the winch (101), and the other end of the steel wire rope (102) is wound around the A pulley (104), the B pulley (105) and the movable pulley (107) and connected to the B sliding frame (200); an A limiting piece (300) is installed on the B sliding frame (200), and the A limiting piece (300) has a first state and a second state: when the A limiting piece (300) is in the first state, the drill rod (400) can move relative to the B sliding frame (200) along the length direction of the drill rod (400), and the A limiting piece (300) prevents the B sliding frame (200) from moving relative to the mast (103) along the length direction of the drill rod (400); when the A limiting piece (300) is in the second state, the B sliding frame (200) can move relative to the mast (103) along the length direction of the drill rod (400), and the A limiting piece (300) prevents the B sliding frame (200) from moving relative to the drill rod (400) along the length direction of the drill rod (400); the A limiting piece (300) comprises an A bolt (301), an A movement driving piece (302) and two A limiting plates (303), a plurality of A insertion slots (304) are formed on the A limiting plates (303) and distributed along the length direction of the A limiting plates (303), one of the A limiting plates (303) is fixedly installed on the mast (103), the other A limiting plate (303) is fixedly installed on the drill rod (400), an A through hole is formed on the B sliding frame (200), the A bolt (301) is slidably installed in the A through hole, the A bolt (301) can move along its length direction to insert one end of the A bolt (301) into one of the A insertion slots (304) on one of the A limiting plates (303), and the other end of the A bolt (301) is separated from the A insertion slot (304) on the other A limiting plate (303), the A bolt (301) is connected to the A movement driving piece (302) through a support on the outside of the A bolt (301), and the A movement driving piece (302) is used to drive the A bolt (301) to move along the length direction of the A bolt (301). The B guide comprises two groups of A guide wheel groups and two groups of B guide wheel groups, the two groups of A guide wheel groups and the two groups of B guide wheel groups are symmetrically installed on the B sliding frame (200) and correspondingly abut the circumferential four sides of the drill rod (400) respectively, the A guide wheel group comprises two A guide wheels (311), the two ends of the two A guide wheels (311) are rotatably connected with the B sliding frame (200), and the B guide wheel group comprises four B guide wheels (312), the two ends of the four B guide wheels (312) are rotatably connected with the B sliding frame (200).

2. The double-wheel milling and stirring drill lifting mechanism for underground continuous wall construction according to claim 1, characterized in that, The A sliding frame (106) is provided with an A channel through which the drill rod (400) passes, and one end of the drill rod (400) is fixedly connected with the inner wall of the A channel.

3. The double-wheel milling and stirring drill lifting mechanism for underground continuous wall construction according to claim 1, characterized in that, The A sliding frame (106) is provided with a B channel through which the drill rod (400) passes, the inner wall of the B channel is provided with an A guide, the A guide is used for limiting the drill rod (400) from moving along the length direction of the drill rod (400) relative to the A sliding frame (106), and the A sliding frame (106) is provided with a B limiting piece (500), and the B limiting piece (500) is used for hindering the drill rod (400) from moving along the length direction of the drill rod (400) relative to the A sliding frame (106).

4. The double-wheel milling and stirring drill lifting mechanism for underground continuous wall construction according to claim 3, characterized in that, The B limiting piece (500) comprises a B bolt (501), a B moving driving piece (502), a B limiting plate (503) and a plurality of B insertion grooves (504) formed in the B limiting plate (503), the plurality of B insertion grooves (504) are distributed along the length direction of the B limiting plate (503), the A sliding frame (106) is provided with a B through hole, the B bolt (501) is slidably installed in the B through hole, the B bolt (501) can be moved to be partially inserted into one of the B insertion grooves (504), and one end of the B bolt (501) is connected with the B moving driving piece (502) used for driving the B bolt (501) to move to be inserted into or separated from the B insertion groove (504).

5. The double-wheel milling and stirring drill lifting mechanism for underground continuous wall construction according to claim 3, characterized in that, The A guide comprises two groups of C guide wheel groups and two groups of D guide wheel groups, the two groups of C guide wheel groups and the two groups of D guide wheel groups are symmetrically installed on the A sliding frame (106) and correspondingly abut the circumferential four sides of the drill rod (400) respectively, the C guide wheel group comprises two C guide wheels (108), the two ends of the two C guide wheels (108) are rotatably connected with the A sliding frame (106), and the D guide wheel group comprises four D guide wheels (109), the two ends of the four D guide wheels (109) are rotatably connected with the A sliding frame (106).

6. The double-wheel milling and stirring drill lifting mechanism for underground continuous wall construction according to claim 1, characterized in that, The guiding frame (600) is fixedly connected with the mast (103) on one side, and a C guide is arranged on the guiding frame (600) and used for limiting the movement of the drill rod (400) along the length direction of the drill rod (400).

7. The double-wheel milling and stirring drill machine lifting mechanism for underground continuous wall construction according to claim 6, characterized in that, The C guide comprises two groups of E guide wheel groups and two groups of F guide wheel groups, the two groups of E guide wheel groups and the two groups of F guide wheel groups are symmetrically installed on the guiding frame (600) and correspondingly abut against the circumferential four sides of the drill rod (400) respectively, the E guide wheel group comprises two E guide wheels (601), the two ends of the two E guide wheels (601) are respectively rotationally connected with the guiding frame (600), and the F guide wheel group comprises four F guide wheels (602), the two ends of the four F guide wheels (602) are respectively rotationally connected with the guiding frame (600).

8. A double-wheel milling and stirring drill machine, comprising a walking mechanism, a milling mechanism, a power system and a control system, characterized in that, The double-wheel milling and stirring drill machine further comprises the double-wheel milling and stirring drill machine lifting mechanism for underground continuous wall construction according to any one of claims 1-7, the winch (101) and the mast (103) are both installed on the walking mechanism, and the milling mechanism is installed at the bottom end of the drill rod (400).

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